From 7dc8faeab3e3b985bd61131ff9fb9067e91182e3 Mon Sep 17 00:00:00 2001 From: Michael Auchter Date: Thu, 24 Sep 2020 14:52:12 -0500 Subject: iio: dac: ad5686: add support for AD5338R The AD5338R is a 10-bit DAC with 2 outputs and an internal 2.5V reference (enabled by default). The register configuration is nearly identical to the AD5696R DAC that's already supported by this driver, with the channel selection bits being the only thing different. Signed-off-by: Michael Auchter Link: https://lore.kernel.org/r/20200924195215.49443-1-michael.auchter@ni.com Signed-off-by: Jonathan Cameron --- drivers/iio/dac/Kconfig | 7 ++++--- drivers/iio/dac/ad5686.c | 13 +++++++++++++ drivers/iio/dac/ad5686.h | 1 + drivers/iio/dac/ad5696-i2c.c | 1 + 4 files changed, 19 insertions(+), 3 deletions(-) (limited to 'drivers/iio') diff --git a/drivers/iio/dac/Kconfig b/drivers/iio/dac/Kconfig index dae8d27e772d..6f6074a5d3db 100644 --- a/drivers/iio/dac/Kconfig +++ b/drivers/iio/dac/Kconfig @@ -141,9 +141,10 @@ config AD5696_I2C depends on I2C select AD5686 help - Say yes here to build support for Analog Devices AD5671R, AD5675R, - AD5694, AD5694R, AD5695R, AD5696, AD5696R Voltage Output Digital to - Analog Converter. + Say yes here to build support for Analog Devices AD5311R, AD5338R, + AD5671R, AD5675R, AD5691R, AD5692R, AD5693, AD5693R, AD5694, AD5694R, + AD5695R, AD5696, and AD5696R Digital to Analog converters. + To compile this driver as a module, choose M here: the module will be called ad5696. diff --git a/drivers/iio/dac/ad5686.c b/drivers/iio/dac/ad5686.c index 148d9541f517..7d6792ac1020 100644 --- a/drivers/iio/dac/ad5686.c +++ b/drivers/iio/dac/ad5686.c @@ -210,6 +210,12 @@ static const struct iio_chan_spec name[] = { \ AD5868_CHANNEL(0, 0, bits, _shift), \ } +#define DECLARE_AD5338_CHANNELS(name, bits, _shift) \ +static const struct iio_chan_spec name[] = { \ + AD5868_CHANNEL(0, 1, bits, _shift), \ + AD5868_CHANNEL(1, 8, bits, _shift), \ +} + #define DECLARE_AD5686_CHANNELS(name, bits, _shift) \ static const struct iio_chan_spec name[] = { \ AD5868_CHANNEL(0, 1, bits, _shift), \ @@ -252,6 +258,7 @@ static const struct iio_chan_spec name[] = { \ DECLARE_AD5693_CHANNELS(ad5310r_channels, 10, 2); DECLARE_AD5693_CHANNELS(ad5311r_channels, 10, 6); +DECLARE_AD5338_CHANNELS(ad5338r_channels, 10, 6); DECLARE_AD5676_CHANNELS(ad5672_channels, 12, 4); DECLARE_AD5679_CHANNELS(ad5674r_channels, 12, 4); DECLARE_AD5676_CHANNELS(ad5676_channels, 16, 0); @@ -276,6 +283,12 @@ static const struct ad5686_chip_info ad5686_chip_info_tbl[] = { .num_channels = 1, .regmap_type = AD5693_REGMAP, }, + [ID_AD5338R] = { + .channels = ad5338r_channels, + .int_vref_mv = 2500, + .num_channels = 2, + .regmap_type = AD5686_REGMAP, + }, [ID_AD5671R] = { .channels = ad5672_channels, .int_vref_mv = 2500, diff --git a/drivers/iio/dac/ad5686.h b/drivers/iio/dac/ad5686.h index a15f2970577e..d9c8ba413fe9 100644 --- a/drivers/iio/dac/ad5686.h +++ b/drivers/iio/dac/ad5686.h @@ -52,6 +52,7 @@ enum ad5686_supported_device_ids { ID_AD5310R, ID_AD5311R, + ID_AD5338R, ID_AD5671R, ID_AD5672R, ID_AD5674R, diff --git a/drivers/iio/dac/ad5696-i2c.c b/drivers/iio/dac/ad5696-i2c.c index ccf794caef43..89e7b063b7bb 100644 --- a/drivers/iio/dac/ad5696-i2c.c +++ b/drivers/iio/dac/ad5696-i2c.c @@ -72,6 +72,7 @@ static int ad5686_i2c_remove(struct i2c_client *i2c) static const struct i2c_device_id ad5686_i2c_id[] = { {"ad5311r", ID_AD5311R}, + {"ad5338r", ID_AD5338R}, {"ad5671r", ID_AD5671R}, {"ad5675r", ID_AD5675R}, {"ad5691r", ID_AD5691R}, -- cgit v1.2.3 From bf7cfa685d4d342f4656ccc960ac10d9e5c77af7 Mon Sep 17 00:00:00 2001 From: Michael Auchter Date: Thu, 24 Sep 2020 14:52:13 -0500 Subject: iio: dac: ad5686: add of_match_table Add of_match_table to this driver, so devices can be probed based on device tree contents. Signed-off-by: Michael Auchter Link: https://lore.kernel.org/r/20200924195215.49443-2-michael.auchter@ni.com Signed-off-by: Jonathan Cameron --- drivers/iio/dac/ad5696-i2c.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'drivers/iio') diff --git a/drivers/iio/dac/ad5696-i2c.c b/drivers/iio/dac/ad5696-i2c.c index 89e7b063b7bb..a39eda7c02d2 100644 --- a/drivers/iio/dac/ad5696-i2c.c +++ b/drivers/iio/dac/ad5696-i2c.c @@ -88,9 +88,28 @@ static const struct i2c_device_id ad5686_i2c_id[] = { }; MODULE_DEVICE_TABLE(i2c, ad5686_i2c_id); +static const struct of_device_id ad5686_of_match[] = { + { .compatible = "adi,ad5311r" }, + { .compatible = "adi,ad5338r" }, + { .compatible = "adi,ad5671r" }, + { .compatible = "adi,ad5675r" }, + { .compatible = "adi,ad5691r" }, + { .compatible = "adi,ad5692r" }, + { .compatible = "adi,ad5693" }, + { .compatible = "adi,ad5693r" }, + { .compatible = "adi,ad5694" }, + { .compatible = "adi,ad5694r" }, + { .compatible = "adi,ad5695r" }, + { .compatible = "adi,ad5696" }, + { .compatible = "adi,ad5696r" }, + {} +}; +MODULE_DEVICE_TABLE(of, ad5686_of_match); + static struct i2c_driver ad5686_i2c_driver = { .driver = { .name = "ad5696", + .of_match_table = ad5686_of_match, }, .probe = ad5686_i2c_probe, .remove = ad5686_i2c_remove, -- cgit v1.2.3 From ad49bd57f9d574ddc859994db3ba996014e555e0 Mon Sep 17 00:00:00 2001 From: Alexandru Ardelean Date: Wed, 30 Sep 2020 16:50:45 +0300 Subject: iio: adc: at91_adc: use of_device_get_match_data() helper This is a small tidy-up. The of_device_get_match_data() helper retrieves the driver data from the OF table, without needed to explicitly know the table variable (since it can retrieve it from the driver object). Signed-off-by: Alexandru Ardelean Reviewed-by: Alexandre Belloni Link: https://lore.kernel.org/r/20200930135048.11530-2-alexandru.ardelean@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/at91_adc.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) (limited to 'drivers/iio') diff --git a/drivers/iio/adc/at91_adc.c b/drivers/iio/adc/at91_adc.c index 9b2c548fae95..c9ec0a4a357e 100644 --- a/drivers/iio/adc/at91_adc.c +++ b/drivers/iio/adc/at91_adc.c @@ -829,8 +829,6 @@ static u32 calc_startup_ticks_9x5(u32 startup_time, u32 adc_clk_khz) return ticks; } -static const struct of_device_id at91_adc_dt_ids[]; - static int at91_adc_probe_dt_ts(struct device_node *node, struct at91_adc_state *st, struct device *dev) { @@ -878,8 +876,7 @@ static int at91_adc_probe_dt(struct iio_dev *idev, if (!node) return -EINVAL; - st->caps = (struct at91_adc_caps *) - of_match_device(at91_adc_dt_ids, &pdev->dev)->data; + st->caps = (struct at91_adc_caps *)of_device_get_match_data(&pdev->dev); st->use_external = of_property_read_bool(node, "atmel,adc-use-external-triggers"); -- cgit v1.2.3 From 3e4ef8e8cefada6b99150011a2d36a89e2fd2380 Mon Sep 17 00:00:00 2001 From: Alexandru Ardelean Date: Wed, 30 Sep 2020 16:50:46 +0300 Subject: iio: adc: at91_adc: const-ify some driver data The main intent is to get rid of the cast for the void-pointer returned by of_device_get_match_data(). This requires const-ifying the 'caps' and 'registers' references on the at91_adc_state struct. The caps can be obtained also from the old platform_data (in the at91_adc_probe_pdata() function), but that cast is not touched in this patch, since the old platform_data should be removed/cleaned-away. Also, that cast deals with converting a kernel_ulong_t type to a pointer. So, updating that cast doesn't yield any benefit. Signed-off-by: Alexandru Ardelean Reviewed-by: Alexandre Belloni Link: https://lore.kernel.org/r/20200930135048.11530-3-alexandru.ardelean@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/at91_adc.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers/iio') diff --git a/drivers/iio/adc/at91_adc.c b/drivers/iio/adc/at91_adc.c index c9ec0a4a357e..7d846a2852a5 100644 --- a/drivers/iio/adc/at91_adc.c +++ b/drivers/iio/adc/at91_adc.c @@ -202,7 +202,7 @@ struct at91_adc_state { struct mutex lock; u8 num_channels; void __iomem *reg_base; - struct at91_adc_reg_desc *registers; + const struct at91_adc_reg_desc *registers; u32 startup_time; u8 sample_hold_time; bool sleep_mode; @@ -214,7 +214,7 @@ struct at91_adc_state { u32 res; /* resolution used for convertions */ bool low_res; /* the resolution corresponds to the lowest one */ wait_queue_head_t wq_data_avail; - struct at91_adc_caps *caps; + const struct at91_adc_caps *caps; /* * Following ADC channels are shared by touchscreen: @@ -550,7 +550,7 @@ static int at91_adc_configure_trigger(struct iio_trigger *trig, bool state) { struct iio_dev *idev = iio_trigger_get_drvdata(trig); struct at91_adc_state *st = iio_priv(idev); - struct at91_adc_reg_desc *reg = st->registers; + const struct at91_adc_reg_desc *reg = st->registers; u32 status = at91_adc_readl(st, reg->trigger_register); int value; u8 bit; @@ -876,7 +876,7 @@ static int at91_adc_probe_dt(struct iio_dev *idev, if (!node) return -EINVAL; - st->caps = (struct at91_adc_caps *)of_device_get_match_data(&pdev->dev); + st->caps = of_device_get_match_data(&pdev->dev); st->use_external = of_property_read_bool(node, "atmel,adc-use-external-triggers"); -- cgit v1.2.3 From f091d7c5fe6cc39e916b50f90e3cac67a032d0be Mon Sep 17 00:00:00 2001 From: Alexandru Ardelean Date: Wed, 30 Sep 2020 16:50:47 +0300 Subject: iio: adc: at91_adc: add Kconfig dep on the OF symbol and remove of_match_ptr() This tries to solve a warning reported by the lkp bot: >> drivers/iio/adc/at91_adc.c:1439:34: warning: unused variable >> 'at91_adc_dt_ids' [-Wunused-const-variable] static const struct of_device_id at91_adc_dt_ids[] = { ^ 1 warning generated. This warning has appeared after the AT91_ADC driver compilation has been enabled via the COMPILE_TEST symbol dependency. The warning is caused by the 'of_match_ptr()' helper which returns NULL if OF is undefined. This driver should build only for device-tree context, so a dependency on the OF Kconfig symbol has been added. Also, the usage of of_match_ptr() helper has been removed since it shouldn't ever return NULL (because the driver should not be built for the non-OF context). Fixes: 4027860dcc4c ("iio: Kconfig: at91_adc: add COMPILE_TEST dependency to driver") Reported-by: kernel test robot Signed-off-by: Alexandru Ardelean Reviewed-by: Alexandre Belloni Link: https://lore.kernel.org/r/20200930135048.11530-4-alexandru.ardelean@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/Kconfig | 2 +- drivers/iio/adc/at91_adc.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/iio') diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index 91ae90514aff..17e9ceb9c6c4 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -295,7 +295,7 @@ config ASPEED_ADC config AT91_ADC tristate "Atmel AT91 ADC" depends on ARCH_AT91 || COMPILE_TEST - depends on INPUT && SYSFS + depends on INPUT && SYSFS && OF select IIO_BUFFER select IIO_TRIGGERED_BUFFER help diff --git a/drivers/iio/adc/at91_adc.c b/drivers/iio/adc/at91_adc.c index 7d846a2852a5..473bffe84fbd 100644 --- a/drivers/iio/adc/at91_adc.c +++ b/drivers/iio/adc/at91_adc.c @@ -1466,7 +1466,7 @@ static struct platform_driver at91_adc_driver = { .id_table = at91_adc_ids, .driver = { .name = DRIVER_NAME, - .of_match_table = of_match_ptr(at91_adc_dt_ids), + .of_match_table = at91_adc_dt_ids, .pm = &at91_adc_pm_ops, }, }; -- cgit v1.2.3 From ead1c9f376dbb2805796098ed6d2a70921c77ee5 Mon Sep 17 00:00:00 2001 From: Alexandru Ardelean Date: Wed, 30 Sep 2020 16:50:48 +0300 Subject: iio: adc: at91_adc: remove platform data and move defs in driver file The AT91 ADC driver no longer uses the 'at91_add_device_adc' platform data type. This is no longer used (at least in mainline boards). This change removes the platform-data initialization from the driver, since it is mostly dead code now. Some definitions [from the platform data at91_adc.h include] have been moved in the driver, since they are needed in the driver. Signed-off-by: Alexandru Ardelean Reviewed-by: Alexandre Belloni Link: https://lore.kernel.org/r/20200930135048.11530-5-alexandru.ardelean@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/at91_adc.c | 60 +++++++++++++--------------------- include/linux/platform_data/at91_adc.h | 49 --------------------------- 2 files changed, 22 insertions(+), 87 deletions(-) delete mode 100644 include/linux/platform_data/at91_adc.h (limited to 'drivers/iio') diff --git a/drivers/iio/adc/at91_adc.c b/drivers/iio/adc/at91_adc.c index 473bffe84fbd..601708168082 100644 --- a/drivers/iio/adc/at91_adc.c +++ b/drivers/iio/adc/at91_adc.c @@ -22,8 +22,6 @@ #include #include -#include - #include #include #include @@ -153,6 +151,25 @@ #define TOUCH_SHTIM 0xa #define TOUCH_SCTIM_US 10 /* 10us for the Touchscreen Switches Closure Time */ +enum atmel_adc_ts_type { + ATMEL_ADC_TOUCHSCREEN_NONE = 0, + ATMEL_ADC_TOUCHSCREEN_4WIRE = 4, + ATMEL_ADC_TOUCHSCREEN_5WIRE = 5, +}; + +/** + * struct at91_adc_trigger - description of triggers + * @name: name of the trigger advertised to the user + * @value: value to set in the ADC's trigger setup register + * to enable the trigger + * @is_external: Does the trigger rely on an external pin? + */ +struct at91_adc_trigger { + const char *name; + u8 value; + bool is_external; +}; + /** * struct at91_adc_reg_desc - Various informations relative to registers * @channel_base: Base offset for the channel data registers @@ -873,9 +890,6 @@ static int at91_adc_probe_dt(struct iio_dev *idev, int i = 0, ret; u32 prop; - if (!node) - return -EINVAL; - st->caps = of_device_get_match_data(&pdev->dev); st->use_external = of_property_read_bool(node, "atmel,adc-use-external-triggers"); @@ -957,30 +971,6 @@ error_ret: return ret; } -static int at91_adc_probe_pdata(struct at91_adc_state *st, - struct platform_device *pdev) -{ - struct at91_adc_data *pdata = pdev->dev.platform_data; - - if (!pdata) - return -EINVAL; - - st->caps = (struct at91_adc_caps *) - platform_get_device_id(pdev)->driver_data; - - st->use_external = pdata->use_external_triggers; - st->vref_mv = pdata->vref; - st->channels_mask = pdata->channels_used; - st->num_channels = st->caps->num_channels; - st->startup_time = pdata->startup_time; - st->trigger_number = pdata->trigger_number; - st->trigger_list = pdata->trigger_list; - st->registers = &st->caps->registers; - st->touchscreen_type = pdata->touchscreen_type; - - return 0; -} - static const struct iio_info at91_adc_info = { .read_raw = &at91_adc_read_raw, }; @@ -1157,15 +1147,9 @@ static int at91_adc_probe(struct platform_device *pdev) st = iio_priv(idev); - if (pdev->dev.of_node) - ret = at91_adc_probe_dt(idev, pdev); - else - ret = at91_adc_probe_pdata(st, pdev); - - if (ret) { - dev_err(&pdev->dev, "No platform data available.\n"); - return -EINVAL; - } + ret = at91_adc_probe_dt(idev, pdev); + if (ret) + return ret; platform_set_drvdata(pdev, idev); diff --git a/include/linux/platform_data/at91_adc.h b/include/linux/platform_data/at91_adc.h deleted file mode 100644 index f20eaeb827ce..000000000000 --- a/include/linux/platform_data/at91_adc.h +++ /dev/null @@ -1,49 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later */ -/* - * Copyright (C) 2011 Free Electrons - */ - -#ifndef _AT91_ADC_H_ -#define _AT91_ADC_H_ - -enum atmel_adc_ts_type { - ATMEL_ADC_TOUCHSCREEN_NONE = 0, - ATMEL_ADC_TOUCHSCREEN_4WIRE = 4, - ATMEL_ADC_TOUCHSCREEN_5WIRE = 5, -}; - -/** - * struct at91_adc_trigger - description of triggers - * @name: name of the trigger advertised to the user - * @value: value to set in the ADC's trigger setup register - to enable the trigger - * @is_external: Does the trigger rely on an external pin? - */ -struct at91_adc_trigger { - const char *name; - u8 value; - bool is_external; -}; - -/** - * struct at91_adc_data - platform data for ADC driver - * @channels_used: channels in use on the board as a bitmask - * @startup_time: startup time of the ADC in microseconds - * @trigger_list: Triggers available in the ADC - * @trigger_number: Number of triggers available in the ADC - * @use_external_triggers: does the board has external triggers availables - * @vref: Reference voltage for the ADC in millivolts - * @touchscreen_type: If a touchscreen is connected, its type (4 or 5 wires) - */ -struct at91_adc_data { - unsigned long channels_used; - u8 startup_time; - struct at91_adc_trigger *trigger_list; - u8 trigger_number; - bool use_external_triggers; - u16 vref; - enum atmel_adc_ts_type touchscreen_type; -}; - -extern void __init at91_add_device_adc(struct at91_adc_data *data); -#endif -- cgit v1.2.3 From 5483b8d5015bb366c372870cfe4448742082e41f Mon Sep 17 00:00:00 2001 From: Alexandru Ardelean Date: Fri, 2 Oct 2020 11:27:23 +0300 Subject: iio: adc: ad7887: invert/rework external ref logic This change inverts/reworks the logic to use an external reference via a provided regulator. Now the driver tries to obtain a regulator. If one is found, then it is used. The rest of the driver logic already checks if there is a non-NULL reference to a regulator, so it should be fine. Signed-off-by: Alexandru Ardelean Link: https://lore.kernel.org/r/20201002082723.184810-1-alexandru.ardelean@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7887.c | 12 ++++++++---- include/linux/platform_data/ad7887.h | 4 ---- 2 files changed, 8 insertions(+), 8 deletions(-) (limited to 'drivers/iio') diff --git a/drivers/iio/adc/ad7887.c b/drivers/iio/adc/ad7887.c index 037bcb47693c..99a480ad3985 100644 --- a/drivers/iio/adc/ad7887.c +++ b/drivers/iio/adc/ad7887.c @@ -246,11 +246,15 @@ static int ad7887_probe(struct spi_device *spi) st = iio_priv(indio_dev); - if (!pdata || !pdata->use_onchip_ref) { - st->reg = devm_regulator_get(&spi->dev, "vref"); - if (IS_ERR(st->reg)) + st->reg = devm_regulator_get_optional(&spi->dev, "vref"); + if (IS_ERR(st->reg)) { + if (PTR_ERR(st->reg) != -ENODEV) return PTR_ERR(st->reg); + st->reg = NULL; + } + + if (st->reg) { ret = regulator_enable(st->reg); if (ret) return ret; @@ -269,7 +273,7 @@ static int ad7887_probe(struct spi_device *spi) /* Setup default message */ mode = AD7887_PM_MODE4; - if (!pdata || !pdata->use_onchip_ref) + if (!st->reg) mode |= AD7887_REF_DIS; if (pdata && pdata->en_dual) mode |= AD7887_DUAL; diff --git a/include/linux/platform_data/ad7887.h b/include/linux/platform_data/ad7887.h index 732af46b2d16..9b4dca6ae70b 100644 --- a/include/linux/platform_data/ad7887.h +++ b/include/linux/platform_data/ad7887.h @@ -13,13 +13,9 @@ * second input channel, and Vref is internally connected to Vdd. If set to * false the device is used in single channel mode and AIN1/Vref is used as * VREF input. - * @use_onchip_ref: Whether to use the onchip reference. If set to true the - * internal 2.5V reference is used. If set to false a external reference is - * used. */ struct ad7887_platform_data { bool en_dual; - bool use_onchip_ref; }; #endif /* IIO_ADC_AD7887_H_ */ -- cgit v1.2.3 From 4393e4c533c5f8e7bc3ef957fda902da30a75ec5 Mon Sep 17 00:00:00 2001 From: Lorenzo Bianconi Date: Tue, 6 Oct 2020 14:07:41 +0200 Subject: iio: imu: st_lsm6dsx: add support to LSM6DST Add support to STM LSM6DST (acc + gyro) Mems sensor https://www.st.com/resource/en/datasheet/lsm6dst.pdf Signed-off-by: Lorenzo Bianconi Link: https://lore.kernel.org/r/835127b76ef5ad05aa2aac58298aee5f3073fb71.1601985763.git.lorenzo@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/imu/st_lsm6dsx/Kconfig | 4 +- drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h | 2 + drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c | 2 +- drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c | 207 ++++++++++++++++++++++++- drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c | 5 + drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_spi.c | 5 + 6 files changed, 221 insertions(+), 4 deletions(-) (limited to 'drivers/iio') diff --git a/drivers/iio/imu/st_lsm6dsx/Kconfig b/drivers/iio/imu/st_lsm6dsx/Kconfig index 28f59d09208a..76c7abbd1ae8 100644 --- a/drivers/iio/imu/st_lsm6dsx/Kconfig +++ b/drivers/iio/imu/st_lsm6dsx/Kconfig @@ -12,8 +12,8 @@ config IIO_ST_LSM6DSX Say yes here to build support for STMicroelectronics LSM6DSx imu sensor. Supported devices: lsm6ds3, lsm6ds3h, lsm6dsl, lsm6dsm, ism330dlc, lsm6dso, lsm6dsox, asm330lhh, lsm6dsr, lsm6ds3tr-c, - ism330dhcx, lsm6dsrx, lsm6ds0 and the accelerometer/gyroscope - of lsm9ds1. + ism330dhcx, lsm6dsrx, lsm6ds0, the accelerometer/gyroscope + of lsm9ds1 and lsm6dst. To compile this driver as a module, choose M here: the module will be called st_lsm6dsx. diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h index 9275346a9cc1..1f31657a7a0e 100644 --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h @@ -28,6 +28,7 @@ #define ST_LSM9DS1_DEV_NAME "lsm9ds1-imu" #define ST_LSM6DS0_DEV_NAME "lsm6ds0" #define ST_LSM6DSRX_DEV_NAME "lsm6dsrx" +#define ST_LSM6DST_DEV_NAME "lsm6dst" enum st_lsm6dsx_hw_id { ST_LSM6DS3_ID, @@ -44,6 +45,7 @@ enum st_lsm6dsx_hw_id { ST_LSM9DS1_ID, ST_LSM6DS0_ID, ST_LSM6DSRX_ID, + ST_LSM6DST_ID, ST_LSM6DSX_MAX_ID, }; diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c index 12ed0a2e55e4..49923503b75a 100644 --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c @@ -14,7 +14,7 @@ * (e.g. Gx, Gy, Gz, Ax, Ay, Az), then data are repeated depending on the * value of the decimation factor and ODR set for each FIFO data set. * - * LSM6DSO/LSM6DSOX/ASM330LHH/LSM6DSR/LSM6DSRX/ISM330DHCX: + * LSM6DSO/LSM6DSOX/ASM330LHH/LSM6DSR/LSM6DSRX/ISM330DHCX/LSM6DST: * The FIFO buffer can be configured to store data from gyroscope and * accelerometer. Each sample is queued with a tag (1B) indicating data * source (gyroscope, accelerometer, hw timer). diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c index 42f485634d04..5e584c6026f1 100644 --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c @@ -26,7 +26,7 @@ * - Gyroscope supported full-scale [dps]: +-125/+-245/+-500/+-1000/+-2000 * - FIFO size: 4KB * - * - LSM6DSO/LSM6DSOX/ASM330LHH/LSM6DSR/ISM330DHCX: + * - LSM6DSO/LSM6DSOX/ASM330LHH/LSM6DSR/ISM330DHCX/LSM6DST: * - Accelerometer/Gyroscope supported ODR [Hz]: 13, 26, 52, 104, 208, 416, * 833 * - Accelerometer supported full-scale [g]: +-2/+-4/+-8/+-16 @@ -1334,6 +1334,211 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = { .wakeup_src_x_mask = BIT(2), } }, + { + .wai = 0x6d, + .reset = { + .addr = 0x12, + .mask = BIT(0), + }, + .boot = { + .addr = 0x12, + .mask = BIT(7), + }, + .bdu = { + .addr = 0x12, + .mask = BIT(6), + }, + .max_fifo_size = 512, + .id = { + { + .hw_id = ST_LSM6DST_ID, + .name = ST_LSM6DST_DEV_NAME, + }, + }, + .channels = { + [ST_LSM6DSX_ID_ACC] = { + .chan = st_lsm6dsx_acc_channels, + .len = ARRAY_SIZE(st_lsm6dsx_acc_channels), + }, + [ST_LSM6DSX_ID_GYRO] = { + .chan = st_lsm6dsx_gyro_channels, + .len = ARRAY_SIZE(st_lsm6dsx_gyro_channels), + }, + }, + .drdy_mask = { + .addr = 0x13, + .mask = BIT(3), + }, + .odr_table = { + [ST_LSM6DSX_ID_ACC] = { + .reg = { + .addr = 0x10, + .mask = GENMASK(7, 4), + }, + .odr_avl[0] = { 12500, 0x01 }, + .odr_avl[1] = { 26000, 0x02 }, + .odr_avl[2] = { 52000, 0x03 }, + .odr_avl[3] = { 104000, 0x04 }, + .odr_avl[4] = { 208000, 0x05 }, + .odr_avl[5] = { 416000, 0x06 }, + .odr_avl[6] = { 833000, 0x07 }, + .odr_len = 7, + }, + [ST_LSM6DSX_ID_GYRO] = { + .reg = { + .addr = 0x11, + .mask = GENMASK(7, 4), + }, + .odr_avl[0] = { 12500, 0x01 }, + .odr_avl[1] = { 26000, 0x02 }, + .odr_avl[2] = { 52000, 0x03 }, + .odr_avl[3] = { 104000, 0x04 }, + .odr_avl[4] = { 208000, 0x05 }, + .odr_avl[5] = { 416000, 0x06 }, + .odr_avl[6] = { 833000, 0x07 }, + .odr_len = 7, + }, + }, + .fs_table = { + [ST_LSM6DSX_ID_ACC] = { + .reg = { + .addr = 0x10, + .mask = GENMASK(3, 2), + }, + .fs_avl[0] = { IIO_G_TO_M_S_2(61000), 0x0 }, + .fs_avl[1] = { IIO_G_TO_M_S_2(122000), 0x2 }, + .fs_avl[2] = { IIO_G_TO_M_S_2(244000), 0x3 }, + .fs_avl[3] = { IIO_G_TO_M_S_2(488000), 0x1 }, + .fs_len = 4, + }, + [ST_LSM6DSX_ID_GYRO] = { + .reg = { + .addr = 0x11, + .mask = GENMASK(3, 2), + }, + .fs_avl[0] = { IIO_DEGREE_TO_RAD(8750000), 0x0 }, + .fs_avl[1] = { IIO_DEGREE_TO_RAD(17500000), 0x1 }, + .fs_avl[2] = { IIO_DEGREE_TO_RAD(35000000), 0x2 }, + .fs_avl[3] = { IIO_DEGREE_TO_RAD(70000000), 0x3 }, + .fs_len = 4, + }, + }, + .irq_config = { + .irq1 = { + .addr = 0x0d, + .mask = BIT(3), + }, + .irq2 = { + .addr = 0x0e, + .mask = BIT(3), + }, + .lir = { + .addr = 0x56, + .mask = BIT(0), + }, + .clear_on_read = { + .addr = 0x56, + .mask = BIT(6), + }, + .irq1_func = { + .addr = 0x5e, + .mask = BIT(5), + }, + .irq2_func = { + .addr = 0x5f, + .mask = BIT(5), + }, + .hla = { + .addr = 0x12, + .mask = BIT(5), + }, + .od = { + .addr = 0x12, + .mask = BIT(4), + }, + }, + .batch = { + [ST_LSM6DSX_ID_ACC] = { + .addr = 0x09, + .mask = GENMASK(3, 0), + }, + [ST_LSM6DSX_ID_GYRO] = { + .addr = 0x09, + .mask = GENMASK(7, 4), + }, + }, + .fifo_ops = { + .update_fifo = st_lsm6dsx_update_fifo, + .read_fifo = st_lsm6dsx_read_tagged_fifo, + .fifo_th = { + .addr = 0x07, + .mask = GENMASK(8, 0), + }, + .fifo_diff = { + .addr = 0x3a, + .mask = GENMASK(9, 0), + }, + .th_wl = 1, + }, + .ts_settings = { + .timer_en = { + .addr = 0x19, + .mask = BIT(5), + }, + .decimator = { + .addr = 0x0a, + .mask = GENMASK(7, 6), + }, + .freq_fine = 0x63, + }, + .shub_settings = { + .page_mux = { + .addr = 0x01, + .mask = BIT(6), + }, + .master_en = { + .sec_page = true, + .addr = 0x14, + .mask = BIT(2), + }, + .pullup_en = { + .sec_page = true, + .addr = 0x14, + .mask = BIT(3), + }, + .aux_sens = { + .addr = 0x14, + .mask = GENMASK(1, 0), + }, + .wr_once = { + .addr = 0x14, + .mask = BIT(6), + }, + .num_ext_dev = 3, + .shub_out = { + .sec_page = true, + .addr = 0x02, + }, + .slv0_addr = 0x15, + .dw_slv0_addr = 0x21, + .batch_en = BIT(3), + }, + .event_settings = { + .enable_reg = { + .addr = 0x58, + .mask = BIT(7), + }, + .wakeup_reg = { + .addr = 0x5b, + .mask = GENMASK(5, 0), + }, + .wakeup_src_reg = 0x1b, + .wakeup_src_status_mask = BIT(3), + .wakeup_src_z_mask = BIT(0), + .wakeup_src_y_mask = BIT(1), + .wakeup_src_x_mask = BIT(2), + }, + }, }; int st_lsm6dsx_set_page(struct st_lsm6dsx_hw *hw, bool enable) diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c index 0fb32131afce..e0f945dde12d 100644 --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c @@ -94,6 +94,10 @@ static const struct of_device_id st_lsm6dsx_i2c_of_match[] = { .compatible = "st,lsm6dsrx", .data = (void *)ST_LSM6DSRX_ID, }, + { + .compatible = "st,lsm6dst", + .data = (void *)ST_LSM6DST_ID, + }, {}, }; MODULE_DEVICE_TABLE(of, st_lsm6dsx_i2c_of_match); @@ -113,6 +117,7 @@ static const struct i2c_device_id st_lsm6dsx_i2c_id_table[] = { { ST_LSM9DS1_DEV_NAME, ST_LSM9DS1_ID }, { ST_LSM6DS0_DEV_NAME, ST_LSM6DS0_ID }, { ST_LSM6DSRX_DEV_NAME, ST_LSM6DSRX_ID }, + { ST_LSM6DST_DEV_NAME, ST_LSM6DST_ID }, {}, }; MODULE_DEVICE_TABLE(i2c, st_lsm6dsx_i2c_id_table); diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_spi.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_spi.c index eb1086e4a951..c57895be8afe 100644 --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_spi.c +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_spi.c @@ -94,6 +94,10 @@ static const struct of_device_id st_lsm6dsx_spi_of_match[] = { .compatible = "st,lsm6dsrx", .data = (void *)ST_LSM6DSRX_ID, }, + { + .compatible = "st,lsm6dst", + .data = (void *)ST_LSM6DST_ID, + }, {}, }; MODULE_DEVICE_TABLE(of, st_lsm6dsx_spi_of_match); @@ -113,6 +117,7 @@ static const struct spi_device_id st_lsm6dsx_spi_id_table[] = { { ST_LSM9DS1_DEV_NAME, ST_LSM9DS1_ID }, { ST_LSM6DS0_DEV_NAME, ST_LSM6DS0_ID }, { ST_LSM6DSRX_DEV_NAME, ST_LSM6DSRX_ID }, + { ST_LSM6DST_DEV_NAME, ST_LSM6DST_ID }, {}, }; MODULE_DEVICE_TABLE(spi, st_lsm6dsx_spi_id_table); -- cgit v1.2.3 From 227c83faa2f83293e88e7889eaab6fc7960ecee3 Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Tue, 6 Oct 2020 18:17:30 -0700 Subject: iio: sx9310: Support hardware gain factor Add support to set the hardware gain of the channels as a multiplier of 2x, 4x, or 8x. Signed-off-by: Stephen Boyd Cc: Daniel Campello Cc: Lars-Peter Clausen Cc: Peter Meerwald-Stadler Cc: Douglas Anderson Cc: Gwendal Grignou Cc: Evan Green Link: https://lore.kernel.org/r/20201007011735.1346994-2-swboyd@chromium.org Signed-off-by: Jonathan Cameron --- drivers/iio/proximity/sx9310.c | 109 +++++++++++++++++++++++++++++++++++++++-- 1 file changed, 104 insertions(+), 5 deletions(-) (limited to 'drivers/iio') diff --git a/drivers/iio/proximity/sx9310.c b/drivers/iio/proximity/sx9310.c index 6d3f4ab8c6b2..68a39c11c7bf 100644 --- a/drivers/iio/proximity/sx9310.c +++ b/drivers/iio/proximity/sx9310.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include #include @@ -51,7 +52,9 @@ #define SX9310_REG_PROX_CTRL2_COMBMODE_CS1_CS2 (0x02 << 6) #define SX9310_REG_PROX_CTRL2_SHIELDEN_DYNAMIC (0x01 << 2) #define SX9310_REG_PROX_CTRL3 0x13 +#define SX9310_REG_PROX_CTRL3_GAIN0_MASK GENMASK(3, 2) #define SX9310_REG_PROX_CTRL3_GAIN0_X8 (0x03 << 2) +#define SX9310_REG_PROX_CTRL3_GAIN12_MASK GENMASK(1, 0) #define SX9310_REG_PROX_CTRL3_GAIN12_X4 0x02 #define SX9310_REG_PROX_CTRL4 0x14 #define SX9310_REG_PROX_CTRL4_RESOLUTION_FINEST 0x07 @@ -145,15 +148,18 @@ static const struct iio_event_spec sx9310_events[] = { { .type = IIO_EV_TYPE_THRESH, .dir = IIO_EV_DIR_EITHER, - .mask_separate = BIT(IIO_EV_INFO_ENABLE), + .mask_separate = BIT(IIO_EV_INFO_ENABLE) | BIT(IIO_EV_INFO_VALUE), }, }; #define SX9310_NAMED_CHANNEL(idx, name) \ { \ .type = IIO_PROXIMITY, \ - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \ + BIT(IIO_CHAN_INFO_HARDWAREGAIN), \ .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ), \ + .info_mask_separate_available = \ + BIT(IIO_CHAN_INFO_HARDWAREGAIN), \ .indexed = 1, \ .channel = idx, \ .extend_name = name, \ @@ -426,6 +432,34 @@ out: return ret; } +static int sx9310_read_gain(struct sx9310_data *data, + const struct iio_chan_spec *chan, int *val) +{ + unsigned int regval, gain; + int ret; + + ret = regmap_read(data->regmap, SX9310_REG_PROX_CTRL3, ®val); + if (ret) + return ret; + + switch (chan->channel) { + case 0: + case 3: + gain = FIELD_GET(SX9310_REG_PROX_CTRL3_GAIN0_MASK, regval); + break; + case 1: + case 2: + gain = FIELD_GET(SX9310_REG_PROX_CTRL3_GAIN12_MASK, regval); + break; + default: + return -EINVAL; + } + + *val = 1 << gain; + + return IIO_VAL_INT; +} + static int sx9310_read_samp_freq(struct sx9310_data *data, int *val, int *val2) { unsigned int regval; @@ -461,6 +495,14 @@ static int sx9310_read_raw(struct iio_dev *indio_dev, ret = sx9310_read_proximity(data, chan, val); iio_device_release_direct_mode(indio_dev); return ret; + case IIO_CHAN_INFO_HARDWAREGAIN: + ret = iio_device_claim_direct_mode(indio_dev); + if (ret) + return ret; + + ret = sx9310_read_gain(data, chan, val); + iio_device_release_direct_mode(indio_dev); + return ret; case IIO_CHAN_INFO_SAMP_FREQ: return sx9310_read_samp_freq(data, val, val2); default: @@ -468,6 +510,27 @@ static int sx9310_read_raw(struct iio_dev *indio_dev, } } +static const int sx9310_gain_vals[] = { 1, 2, 4, 8 }; + +static int sx9310_read_avail(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + const int **vals, int *type, int *length, + long mask) +{ + if (chan->type != IIO_PROXIMITY) + return -EINVAL; + + switch (mask) { + case IIO_CHAN_INFO_HARDWAREGAIN: + *type = IIO_VAL_INT; + *length = ARRAY_SIZE(sx9310_gain_vals); + *vals = sx9310_gain_vals; + return IIO_AVAIL_LIST; + } + + return -EINVAL; +} + static int sx9310_set_samp_freq(struct sx9310_data *data, int val, int val2) { int i, ret; @@ -492,6 +555,37 @@ static int sx9310_set_samp_freq(struct sx9310_data *data, int val, int val2) return ret; } +static int sx9310_write_gain(struct sx9310_data *data, + const struct iio_chan_spec *chan, int val) +{ + unsigned int gain, mask; + int ret; + + gain = ilog2(val); + + switch (chan->channel) { + case 0: + case 3: + mask = SX9310_REG_PROX_CTRL3_GAIN0_MASK; + gain = FIELD_PREP(SX9310_REG_PROX_CTRL3_GAIN0_MASK, gain); + break; + case 1: + case 2: + mask = SX9310_REG_PROX_CTRL3_GAIN12_MASK; + gain = FIELD_PREP(SX9310_REG_PROX_CTRL3_GAIN12_MASK, gain); + break; + default: + return -EINVAL; + } + + mutex_lock(&data->mutex); + ret = regmap_update_bits(data->regmap, SX9310_REG_PROX_CTRL3, mask, + gain); + mutex_unlock(&data->mutex); + + return ret; +} + static int sx9310_write_raw(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, int val, int val2, long mask) @@ -501,10 +595,14 @@ static int sx9310_write_raw(struct iio_dev *indio_dev, if (chan->type != IIO_PROXIMITY) return -EINVAL; - if (mask != IIO_CHAN_INFO_SAMP_FREQ) - return -EINVAL; + switch (mask) { + case IIO_CHAN_INFO_SAMP_FREQ: + return sx9310_set_samp_freq(data, val, val2); + case IIO_CHAN_INFO_HARDWAREGAIN: + return sx9310_write_gain(data, chan, val); + } - return sx9310_set_samp_freq(data, val, val2); + return -EINVAL; } static irqreturn_t sx9310_irq_handler(int irq, void *private) @@ -645,6 +743,7 @@ static const struct attribute_group sx9310_attribute_group = { static const struct iio_info sx9310_info = { .attrs = &sx9310_attribute_group, .read_raw = sx9310_read_raw, + .read_avail = sx9310_read_avail, .write_raw = sx9310_write_raw, .read_event_config = sx9310_read_event_config, .write_event_config = sx9310_write_event_config, -- cgit v1.2.3 From ad2b473e2ba39b43df4d2cad77ab6130665d8c31 Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Tue, 6 Oct 2020 18:17:31 -0700 Subject: iio: sx9310: Support setting proximity thresholds Add support to set the proximity thresholds for each channel. Signed-off-by: Stephen Boyd Cc: Daniel Campello Cc: Lars-Peter Clausen Cc: Peter Meerwald-Stadler Cc: Douglas Anderson Cc: Gwendal Grignou Cc: Evan Green Link: https://lore.kernel.org/r/20201007011735.1346994-3-swboyd@chromium.org Signed-off-by: Jonathan Cameron --- drivers/iio/proximity/sx9310.c | 114 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 114 insertions(+) (limited to 'drivers/iio') diff --git a/drivers/iio/proximity/sx9310.c b/drivers/iio/proximity/sx9310.c index 68a39c11c7bf..148f2d862601 100644 --- a/drivers/iio/proximity/sx9310.c +++ b/drivers/iio/proximity/sx9310.c @@ -68,6 +68,7 @@ #define SX9310_REG_PROX_CTRL7_AVGNEGFILT_2 (0x01 << 3) #define SX9310_REG_PROX_CTRL7_AVGPOSFILT_512 0x05 #define SX9310_REG_PROX_CTRL8 0x18 +#define SX9310_REG_PROX_CTRL8_9_PTHRESH_MASK GENMASK(7, 3) #define SX9310_REG_PROX_CTRL9 0x19 #define SX9310_REG_PROX_CTRL8_9_PTHRESH_28 (0x08 << 3) #define SX9310_REG_PROX_CTRL8_9_PTHRESH_96 (0x11 << 3) @@ -531,6 +532,117 @@ static int sx9310_read_avail(struct iio_dev *indio_dev, return -EINVAL; } +static const unsigned int sx9310_pthresh_codes[] = { + 2, 4, 6, 8, 12, 16, 20, 24, 28, 32, 40, 48, 56, 64, 72, 80, 88, 96, 112, + 128, 144, 160, 192, 224, 256, 320, 384, 512, 640, 768, 1024, 1536 +}; + +static int sx9310_get_thresh_reg(unsigned int channel) +{ + switch (channel) { + case 0: + case 3: + return SX9310_REG_PROX_CTRL8; + case 1: + case 2: + return SX9310_REG_PROX_CTRL9; + } + + return -EINVAL; +} + +static int sx9310_read_thresh(struct sx9310_data *data, + const struct iio_chan_spec *chan, int *val) +{ + unsigned int reg; + unsigned int regval; + int ret; + + reg = ret = sx9310_get_thresh_reg(chan->channel); + if (ret < 0) + return ret; + + ret = regmap_read(data->regmap, reg, ®val); + if (ret) + return ret; + + regval = FIELD_GET(SX9310_REG_PROX_CTRL8_9_PTHRESH_MASK, regval); + if (regval > ARRAY_SIZE(sx9310_pthresh_codes)) + return -EINVAL; + + *val = sx9310_pthresh_codes[regval]; + return IIO_VAL_INT; +} + +static int sx9310_read_event_val(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, + enum iio_event_info info, int *val, int *val2) +{ + struct sx9310_data *data = iio_priv(indio_dev); + + if (chan->type != IIO_PROXIMITY) + return -EINVAL; + + switch (info) { + case IIO_EV_INFO_VALUE: + return sx9310_read_thresh(data, chan, val); + default: + return -EINVAL; + } +} + +static int sx9310_write_thresh(struct sx9310_data *data, + const struct iio_chan_spec *chan, int val) +{ + unsigned int reg; + unsigned int regval; + int ret, i; + + reg = ret = sx9310_get_thresh_reg(chan->channel); + if (ret < 0) + return ret; + + for (i = 0; i < ARRAY_SIZE(sx9310_pthresh_codes); i++) { + if (sx9310_pthresh_codes[i] == val) { + regval = i; + break; + } + } + + if (i == ARRAY_SIZE(sx9310_pthresh_codes)) + return -EINVAL; + + regval = FIELD_PREP(SX9310_REG_PROX_CTRL8_9_PTHRESH_MASK, regval); + mutex_lock(&data->mutex); + ret = regmap_update_bits(data->regmap, reg, + SX9310_REG_PROX_CTRL8_9_PTHRESH_MASK, regval); + mutex_unlock(&data->mutex); + + return ret; +} + + +static int sx9310_write_event_val(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, + enum iio_event_info info, int val, int val2) +{ + struct sx9310_data *data = iio_priv(indio_dev); + + if (chan->type != IIO_PROXIMITY) + return -EINVAL; + + switch (info) { + case IIO_EV_INFO_VALUE: + return sx9310_write_thresh(data, chan, val); + default: + return -EINVAL; + } +} + static int sx9310_set_samp_freq(struct sx9310_data *data, int val, int val2) { int i, ret; @@ -744,6 +856,8 @@ static const struct iio_info sx9310_info = { .attrs = &sx9310_attribute_group, .read_raw = sx9310_read_raw, .read_avail = sx9310_read_avail, + .read_event_value = sx9310_read_event_val, + .write_event_value = sx9310_write_event_val, .write_raw = sx9310_write_raw, .read_event_config = sx9310_read_event_config, .write_event_config = sx9310_write_event_config, -- cgit v1.2.3 From 08f0411c48f27703f0db2bd287890fdedf5bef5e Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Tue, 6 Oct 2020 18:17:32 -0700 Subject: iio: sx9310: Support setting hysteresis values Add support for setting the hysteresis as a shifted value of a channel's proximity threshold. Each channel can have a different threshold, but the hysteresis applies to all channels as a right shift factor. Therefore, duplicate the hysteresis value across all channels and make it depend on the channel's proximity threshold. This is sort of odd but seems to work in practice as most of the time only one channel is used. Signed-off-by: Stephen Boyd Cc: Daniel Campello Cc: Lars-Peter Clausen Cc: Peter Meerwald-Stadler Cc: Douglas Anderson Cc: Gwendal Grignou Cc: Evan Green Link: https://lore.kernel.org/r/20201007011735.1346994-4-swboyd@chromium.org Signed-off-by: Jonathan Cameron --- drivers/iio/proximity/sx9310.c | 62 +++++++++++++++++++++++++++++++++++++++++- 1 file changed, 61 insertions(+), 1 deletion(-) (limited to 'drivers/iio') diff --git a/drivers/iio/proximity/sx9310.c b/drivers/iio/proximity/sx9310.c index 148f2d862601..940c415ece6b 100644 --- a/drivers/iio/proximity/sx9310.c +++ b/drivers/iio/proximity/sx9310.c @@ -75,6 +75,7 @@ #define SX9310_REG_PROX_CTRL8_9_BODYTHRESH_900 0x03 #define SX9310_REG_PROX_CTRL8_9_BODYTHRESH_1500 0x05 #define SX9310_REG_PROX_CTRL10 0x1a +#define SX9310_REG_PROX_CTRL10_HYST_MASK GENMASK(5, 4) #define SX9310_REG_PROX_CTRL10_HYST_6PCT (0x01 << 4) #define SX9310_REG_PROX_CTRL10_FAR_DEBOUNCE_2 0x01 #define SX9310_REG_PROX_CTRL11 0x1b @@ -149,7 +150,9 @@ static const struct iio_event_spec sx9310_events[] = { { .type = IIO_EV_TYPE_THRESH, .dir = IIO_EV_DIR_EITHER, - .mask_separate = BIT(IIO_EV_INFO_ENABLE) | BIT(IIO_EV_INFO_VALUE), + .mask_separate = BIT(IIO_EV_INFO_ENABLE) | + BIT(IIO_EV_INFO_HYSTERESIS) | + BIT(IIO_EV_INFO_VALUE), }, }; @@ -574,6 +577,30 @@ static int sx9310_read_thresh(struct sx9310_data *data, return IIO_VAL_INT; } +static int sx9310_read_hysteresis(struct sx9310_data *data, + const struct iio_chan_spec *chan, int *val) +{ + unsigned int regval, pthresh; + int ret; + + ret = sx9310_read_thresh(data, chan, &pthresh); + if (ret < 0) + return ret; + + ret = regmap_read(data->regmap, SX9310_REG_PROX_CTRL10, ®val); + if (ret) + return ret; + + regval = FIELD_GET(SX9310_REG_PROX_CTRL10_HYST_MASK, regval); + if (!regval) + regval = 5; + + /* regval is at most 5 */ + *val = pthresh >> (5 - regval); + + return IIO_VAL_INT; +} + static int sx9310_read_event_val(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, @@ -588,6 +615,8 @@ static int sx9310_read_event_val(struct iio_dev *indio_dev, switch (info) { case IIO_EV_INFO_VALUE: return sx9310_read_thresh(data, chan, val); + case IIO_EV_INFO_HYSTERESIS: + return sx9310_read_hysteresis(data, chan, val); default: return -EINVAL; } @@ -623,6 +652,35 @@ static int sx9310_write_thresh(struct sx9310_data *data, return ret; } +static int sx9310_write_hysteresis(struct sx9310_data *data, + const struct iio_chan_spec *chan, int _val) +{ + unsigned int hyst, val = _val; + int ret, pthresh; + + ret = sx9310_read_thresh(data, chan, &pthresh); + if (ret < 0) + return ret; + + if (val == 0) + hyst = 0; + else if (val == pthresh >> 2) + hyst = 3; + else if (val == pthresh >> 3) + hyst = 2; + else if (val == pthresh >> 4) + hyst = 1; + else + return -EINVAL; + + hyst = FIELD_PREP(SX9310_REG_PROX_CTRL10_HYST_MASK, hyst); + mutex_lock(&data->mutex); + ret = regmap_update_bits(data->regmap, SX9310_REG_PROX_CTRL10, + SX9310_REG_PROX_CTRL10_HYST_MASK, hyst); + mutex_unlock(&data->mutex); + + return ret; +} static int sx9310_write_event_val(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, @@ -638,6 +696,8 @@ static int sx9310_write_event_val(struct iio_dev *indio_dev, switch (info) { case IIO_EV_INFO_VALUE: return sx9310_write_thresh(data, chan, val); + case IIO_EV_INFO_HYSTERESIS: + return sx9310_write_hysteresis(data, chan, val); default: return -EINVAL; } -- cgit v1.2.3 From 1b6872015f0b96e6800c1a321b45d581aba9381b Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Tue, 6 Oct 2020 18:17:33 -0700 Subject: iio: sx9310: Support setting debounce values The rising and falling directions can be debounced in the hardware as "close" and "far" debounce settings. Add support for these as rising and falling debounce settings. Signed-off-by: Stephen Boyd Cc: Daniel Campello Cc: Lars-Peter Clausen Cc: Peter Meerwald-Stadler Cc: Douglas Anderson Cc: Gwendal Grignou Cc: Evan Green Link: https://lore.kernel.org/r/20201007011735.1346994-5-swboyd@chromium.org Signed-off-by: Jonathan Cameron --- drivers/iio/proximity/sx9310.c | 100 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 100 insertions(+) (limited to 'drivers/iio') diff --git a/drivers/iio/proximity/sx9310.c b/drivers/iio/proximity/sx9310.c index 940c415ece6b..1809940563b1 100644 --- a/drivers/iio/proximity/sx9310.c +++ b/drivers/iio/proximity/sx9310.c @@ -77,6 +77,8 @@ #define SX9310_REG_PROX_CTRL10 0x1a #define SX9310_REG_PROX_CTRL10_HYST_MASK GENMASK(5, 4) #define SX9310_REG_PROX_CTRL10_HYST_6PCT (0x01 << 4) +#define SX9310_REG_PROX_CTRL10_CLOSE_DEBOUNCE_MASK GENMASK(3, 2) +#define SX9310_REG_PROX_CTRL10_FAR_DEBOUNCE_MASK GENMASK(1, 0) #define SX9310_REG_PROX_CTRL10_FAR_DEBOUNCE_2 0x01 #define SX9310_REG_PROX_CTRL11 0x1b #define SX9310_REG_PROX_CTRL12 0x1c @@ -147,6 +149,16 @@ struct sx9310_data { }; static const struct iio_event_spec sx9310_events[] = { + { + .type = IIO_EV_TYPE_THRESH, + .dir = IIO_EV_DIR_RISING, + .mask_shared_by_all = BIT(IIO_EV_INFO_PERIOD), + }, + { + .type = IIO_EV_TYPE_THRESH, + .dir = IIO_EV_DIR_FALLING, + .mask_shared_by_all = BIT(IIO_EV_INFO_PERIOD), + }, { .type = IIO_EV_TYPE_THRESH, .dir = IIO_EV_DIR_EITHER, @@ -601,6 +613,42 @@ static int sx9310_read_hysteresis(struct sx9310_data *data, return IIO_VAL_INT; } +static int sx9310_read_far_debounce(struct sx9310_data *data, int *val) +{ + unsigned int regval; + int ret; + + ret = regmap_read(data->regmap, SX9310_REG_PROX_CTRL10, ®val); + if (ret) + return ret; + + regval = FIELD_GET(SX9310_REG_PROX_CTRL10_FAR_DEBOUNCE_MASK, regval); + if (regval) + *val = 1 << regval; + else + *val = 0; + + return IIO_VAL_INT; +} + +static int sx9310_read_close_debounce(struct sx9310_data *data, int *val) +{ + unsigned int regval; + int ret; + + ret = regmap_read(data->regmap, SX9310_REG_PROX_CTRL10, ®val); + if (ret) + return ret; + + regval = FIELD_GET(SX9310_REG_PROX_CTRL10_CLOSE_DEBOUNCE_MASK, regval); + if (regval) + *val = 1 << regval; + else + *val = 0; + + return IIO_VAL_INT; +} + static int sx9310_read_event_val(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, @@ -615,6 +663,15 @@ static int sx9310_read_event_val(struct iio_dev *indio_dev, switch (info) { case IIO_EV_INFO_VALUE: return sx9310_read_thresh(data, chan, val); + case IIO_EV_INFO_PERIOD: + switch (dir) { + case IIO_EV_DIR_RISING: + return sx9310_read_far_debounce(data, val); + case IIO_EV_DIR_FALLING: + return sx9310_read_close_debounce(data, val); + default: + return -EINVAL; + } case IIO_EV_INFO_HYSTERESIS: return sx9310_read_hysteresis(data, chan, val); default: @@ -682,6 +739,40 @@ static int sx9310_write_hysteresis(struct sx9310_data *data, return ret; } +static int sx9310_write_far_debounce(struct sx9310_data *data, int val) +{ + int ret; + unsigned int regval; + + val = ilog2(val); + regval = FIELD_PREP(SX9310_REG_PROX_CTRL10_FAR_DEBOUNCE_MASK, val); + + mutex_lock(&data->mutex); + ret = regmap_update_bits(data->regmap, SX9310_REG_PROX_CTRL10, + SX9310_REG_PROX_CTRL10_FAR_DEBOUNCE_MASK, + regval); + mutex_unlock(&data->mutex); + + return ret; +} + +static int sx9310_write_close_debounce(struct sx9310_data *data, int val) +{ + int ret; + unsigned int regval; + + val = ilog2(val); + regval = FIELD_PREP(SX9310_REG_PROX_CTRL10_CLOSE_DEBOUNCE_MASK, val); + + mutex_lock(&data->mutex); + ret = regmap_update_bits(data->regmap, SX9310_REG_PROX_CTRL10, + SX9310_REG_PROX_CTRL10_CLOSE_DEBOUNCE_MASK, + regval); + mutex_unlock(&data->mutex); + + return ret; +} + static int sx9310_write_event_val(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, @@ -696,6 +787,15 @@ static int sx9310_write_event_val(struct iio_dev *indio_dev, switch (info) { case IIO_EV_INFO_VALUE: return sx9310_write_thresh(data, chan, val); + case IIO_EV_INFO_PERIOD: + switch (dir) { + case IIO_EV_DIR_RISING: + return sx9310_write_far_debounce(data, val); + case IIO_EV_DIR_FALLING: + return sx9310_write_close_debounce(data, val); + default: + return -EINVAL; + } case IIO_EV_INFO_HYSTERESIS: return sx9310_write_hysteresis(data, chan, val); default: -- cgit v1.2.3 From 5b19ca2c78a0838976064c0347e46a2c859b541d Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Tue, 6 Oct 2020 18:17:35 -0700 Subject: iio: sx9310: Set various settings from DT These properties need to be set during driver probe. Parse any DT properties and replace the default register settings with the ones parsed from DT. Signed-off-by: Stephen Boyd Cc: Daniel Campello Cc: Lars-Peter Clausen Cc: Peter Meerwald-Stadler Cc: Rob Herring Cc: Cc: Douglas Anderson Cc: Gwendal Grignou Cc: Evan Green Link: https://lore.kernel.org/r/20201007011735.1346994-7-swboyd@chromium.org Signed-off-by: Jonathan Cameron --- drivers/iio/proximity/sx9310.c | 125 ++++++++++++++++++++++++++++++++++++++++- 1 file changed, 124 insertions(+), 1 deletion(-) (limited to 'drivers/iio') diff --git a/drivers/iio/proximity/sx9310.c b/drivers/iio/proximity/sx9310.c index 1809940563b1..a2f820997afc 100644 --- a/drivers/iio/proximity/sx9310.c +++ b/drivers/iio/proximity/sx9310.c @@ -49,23 +49,42 @@ #define SX9310_REG_PROX_CTRL0_SCANPERIOD_15MS 0x01 #define SX9310_REG_PROX_CTRL1 0x11 #define SX9310_REG_PROX_CTRL2 0x12 +#define SX9310_REG_PROX_CTRL2_COMBMODE_MASK GENMASK(7, 6) +#define SX9310_REG_PROX_CTRL2_COMBMODE_CS0_CS1_CS2_CS3 (0x03 << 6) #define SX9310_REG_PROX_CTRL2_COMBMODE_CS1_CS2 (0x02 << 6) +#define SX9310_REG_PROX_CTRL2_COMBMODE_CS0_CS1 (0x01 << 6) +#define SX9310_REG_PROX_CTRL2_COMBMODE_CS3 (0x00 << 6) +#define SX9310_REG_PROX_CTRL2_SHIELDEN_MASK GENMASK(3, 2) #define SX9310_REG_PROX_CTRL2_SHIELDEN_DYNAMIC (0x01 << 2) +#define SX9310_REG_PROX_CTRL2_SHIELDEN_GROUND (0x02 << 2) #define SX9310_REG_PROX_CTRL3 0x13 #define SX9310_REG_PROX_CTRL3_GAIN0_MASK GENMASK(3, 2) #define SX9310_REG_PROX_CTRL3_GAIN0_X8 (0x03 << 2) #define SX9310_REG_PROX_CTRL3_GAIN12_MASK GENMASK(1, 0) #define SX9310_REG_PROX_CTRL3_GAIN12_X4 0x02 #define SX9310_REG_PROX_CTRL4 0x14 +#define SX9310_REG_PROX_CTRL4_RESOLUTION_MASK GENMASK(2, 0) #define SX9310_REG_PROX_CTRL4_RESOLUTION_FINEST 0x07 +#define SX9310_REG_PROX_CTRL4_RESOLUTION_VERY_FINE 0x06 +#define SX9310_REG_PROX_CTRL4_RESOLUTION_FINE 0x05 +#define SX9310_REG_PROX_CTRL4_RESOLUTION_MEDIUM 0x04 +#define SX9310_REG_PROX_CTRL4_RESOLUTION_MEDIUM_COARSE 0x03 +#define SX9310_REG_PROX_CTRL4_RESOLUTION_COARSE 0x02 +#define SX9310_REG_PROX_CTRL4_RESOLUTION_VERY_COARSE 0x01 +#define SX9310_REG_PROX_CTRL4_RESOLUTION_COARSEST 0x00 #define SX9310_REG_PROX_CTRL5 0x15 #define SX9310_REG_PROX_CTRL5_RANGE_SMALL (0x03 << 6) +#define SX9310_REG_PROX_CTRL5_STARTUPSENS_MASK GENMASK(3, 2) #define SX9310_REG_PROX_CTRL5_STARTUPSENS_CS1 (0x01 << 2) +#define SX9310_REG_PROX_CTRL5_RAWFILT_MASK GENMASK(1, 0) +#define SX9310_REG_PROX_CTRL5_RAWFILT_SHIFT 0 #define SX9310_REG_PROX_CTRL5_RAWFILT_1P25 0x02 #define SX9310_REG_PROX_CTRL6 0x16 #define SX9310_REG_PROX_CTRL6_AVGTHRESH_DEFAULT 0x20 #define SX9310_REG_PROX_CTRL7 0x17 #define SX9310_REG_PROX_CTRL7_AVGNEGFILT_2 (0x01 << 3) +#define SX9310_REG_PROX_CTRL7_AVGPOSFILT_MASK GENMASK(2, 0) +#define SX9310_REG_PROX_CTRL7_AVGPOSFILT_SHIFT 0 #define SX9310_REG_PROX_CTRL7_AVGPOSFILT_512 0x05 #define SX9310_REG_PROX_CTRL8 0x18 #define SX9310_REG_PROX_CTRL8_9_PTHRESH_MASK GENMASK(7, 3) @@ -1193,9 +1212,113 @@ static int sx9310_init_compensation(struct iio_dev *indio_dev) return ret; } +static const struct sx9310_reg_default * +sx9310_get_default_reg(struct sx9310_data *data, int i, + struct sx9310_reg_default *reg_def) +{ + int ret; + const struct device_node *np = data->client->dev.of_node; + u32 combined[SX9310_NUM_CHANNELS] = { 4, 4, 4, 4 }; + unsigned long comb_mask = 0; + const char *res; + u32 start = 0, raw = 0, pos = 0; + + memcpy(reg_def, &sx9310_default_regs[i], sizeof(*reg_def)); + if (!np) + return reg_def; + + switch (reg_def->reg) { + case SX9310_REG_PROX_CTRL2: + if (of_property_read_bool(np, "semtech,cs0-ground")) { + reg_def->def &= ~SX9310_REG_PROX_CTRL2_SHIELDEN_MASK; + reg_def->def |= SX9310_REG_PROX_CTRL2_SHIELDEN_GROUND; + } + + reg_def->def &= ~SX9310_REG_PROX_CTRL2_COMBMODE_MASK; + of_property_read_u32_array(np, "semtech,combined-sensors", + combined, ARRAY_SIZE(combined)); + for (i = 0; i < ARRAY_SIZE(combined); i++) { + if (combined[i] <= SX9310_NUM_CHANNELS) + comb_mask |= BIT(combined[i]); + } + + comb_mask &= 0xf; + if (comb_mask == (BIT(3) | BIT(2) | BIT(1) | BIT(0))) + reg_def->def |= SX9310_REG_PROX_CTRL2_COMBMODE_CS0_CS1_CS2_CS3; + else if (comb_mask == (BIT(1) | BIT(2))) + reg_def->def |= SX9310_REG_PROX_CTRL2_COMBMODE_CS1_CS2; + else if (comb_mask == (BIT(0) | BIT(1))) + reg_def->def |= SX9310_REG_PROX_CTRL2_COMBMODE_CS0_CS1; + else if (comb_mask == BIT(3)) + reg_def->def |= SX9310_REG_PROX_CTRL2_COMBMODE_CS3; + + break; + case SX9310_REG_PROX_CTRL4: + ret = of_property_read_string(np, "semtech,resolution", &res); + if (ret) + break; + + reg_def->def &= ~SX9310_REG_PROX_CTRL4_RESOLUTION_MASK; + if (!strcmp(res, "coarsest")) + reg_def->def |= SX9310_REG_PROX_CTRL4_RESOLUTION_COARSEST; + else if (!strcmp(res, "very-coarse")) + reg_def->def |= SX9310_REG_PROX_CTRL4_RESOLUTION_VERY_COARSE; + else if (!strcmp(res, "coarse")) + reg_def->def |= SX9310_REG_PROX_CTRL4_RESOLUTION_COARSE; + else if (!strcmp(res, "medium-coarse")) + reg_def->def |= SX9310_REG_PROX_CTRL4_RESOLUTION_MEDIUM_COARSE; + else if (!strcmp(res, "medium")) + reg_def->def |= SX9310_REG_PROX_CTRL4_RESOLUTION_MEDIUM; + else if (!strcmp(res, "fine")) + reg_def->def |= SX9310_REG_PROX_CTRL4_RESOLUTION_FINE; + else if (!strcmp(res, "very-fine")) + reg_def->def |= SX9310_REG_PROX_CTRL4_RESOLUTION_VERY_FINE; + else if (!strcmp(res, "finest")) + reg_def->def |= SX9310_REG_PROX_CTRL4_RESOLUTION_FINEST; + + break; + case SX9310_REG_PROX_CTRL5: + ret = of_property_read_u32(np, "semtech,startup-sensor", &start); + if (ret) { + start = FIELD_GET(SX9310_REG_PROX_CTRL5_STARTUPSENS_MASK, + reg_def->def); + } + + reg_def->def &= ~SX9310_REG_PROX_CTRL5_STARTUPSENS_MASK; + reg_def->def |= FIELD_PREP(SX9310_REG_PROX_CTRL5_STARTUPSENS_MASK, + start); + + ret = of_property_read_u32(np, "semtech,proxraw-strength", &raw); + if (ret) { + raw = FIELD_GET(SX9310_REG_PROX_CTRL5_RAWFILT_MASK, + reg_def->def); + } else { + raw = ilog2(raw); + } + + reg_def->def &= ~SX9310_REG_PROX_CTRL5_RAWFILT_MASK; + reg_def->def |= FIELD_PREP(SX9310_REG_PROX_CTRL5_RAWFILT_MASK, + raw); + break; + case SX9310_REG_PROX_CTRL7: + ret = of_property_read_u32(np, "semtech,avg-pos-strength", &pos); + if (ret) + break; + + pos = min(max(ilog2(pos), 3), 10) - 3; + reg_def->def &= ~SX9310_REG_PROX_CTRL7_AVGPOSFILT_MASK; + reg_def->def |= FIELD_PREP(SX9310_REG_PROX_CTRL7_AVGPOSFILT_MASK, + pos); + break; + } + + return reg_def; +} + static int sx9310_init_device(struct iio_dev *indio_dev) { struct sx9310_data *data = iio_priv(indio_dev); + struct sx9310_reg_default tmp; const struct sx9310_reg_default *initval; int ret; unsigned int i, val; @@ -1213,7 +1336,7 @@ static int sx9310_init_device(struct iio_dev *indio_dev) /* Program some sane defaults. */ for (i = 0; i < ARRAY_SIZE(sx9310_default_regs); i++) { - initval = &sx9310_default_regs[i]; + initval = sx9310_get_default_reg(data, i, &tmp); ret = regmap_write(data->regmap, initval->reg, initval->def); if (ret) return ret; -- cgit v1.2.3 From c5bf4d645f2d5c4c216dd690c5237d778102c848 Mon Sep 17 00:00:00 2001 From: "dmitry.torokhov@gmail.com" Date: Tue, 6 Oct 2020 14:55:09 -0700 Subject: iio: adc: exynos: do not rely on 'users' counter in ISR MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The order in which 'users' counter is decremented vs calling drivers' close() method is implementation specific, and we should not rely on it. Let's introduce driver private flag and use it to signal ISR to exit when device is being closed. This has a side-effect of fixing issue of accessing inut->users outside of input->mutex protection. Reported-by: Andrzej Pietrasiewicz Signed-off-by: Dmitry Torokhov Reviewed-by: Michał Mirosław Acked-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20201006215509.GA2556081@dtor-ws Signed-off-by: Jonathan Cameron --- drivers/iio/adc/exynos_adc.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'drivers/iio') diff --git a/drivers/iio/adc/exynos_adc.c b/drivers/iio/adc/exynos_adc.c index 99f4404e9fd1..784c10deeb1a 100644 --- a/drivers/iio/adc/exynos_adc.c +++ b/drivers/iio/adc/exynos_adc.c @@ -7,6 +7,7 @@ * Copyright (C) 2013 Naveen Krishna Chatradhi */ +#include #include #include #include @@ -135,6 +136,8 @@ struct exynos_adc { u32 value; unsigned int version; + bool ts_enabled; + bool read_ts; u32 ts_x; u32 ts_y; @@ -651,7 +654,7 @@ static irqreturn_t exynos_ts_isr(int irq, void *dev_id) bool pressed; int ret; - while (info->input->users) { + while (READ_ONCE(info->ts_enabled)) { ret = exynos_read_s3c64xx_ts(dev, &x, &y); if (ret == -ETIMEDOUT) break; @@ -731,6 +734,7 @@ static int exynos_adc_ts_open(struct input_dev *dev) { struct exynos_adc *info = input_get_drvdata(dev); + WRITE_ONCE(info->ts_enabled, true); enable_irq(info->tsirq); return 0; @@ -740,6 +744,7 @@ static void exynos_adc_ts_close(struct input_dev *dev) { struct exynos_adc *info = input_get_drvdata(dev); + WRITE_ONCE(info->ts_enabled, false); disable_irq(info->tsirq); } -- cgit v1.2.3 From 0e7a3978a40b26b85820afe9e544f0032103f805 Mon Sep 17 00:00:00 2001 From: Anand Ashok Dumbre Date: Mon, 5 Oct 2020 08:05:16 -0700 Subject: iio: core: Fix IIO_VAL_FRACTIONAL calculation for negative values Fixes IIO_VAL_FRACTIONAL for case when the result is negative and exponent is 0. example: if the result is -0.75, tmp0 will be 0 and tmp1 = 75 This causes the output to lose sign because of %d in snprintf which works for tmp0 <= -1. Reported-by: kernel test robot #error: uninitialized symbol tmp Reported-by: Dan Carpenter Signed-off-by: Anand Ashok Dumbre Link: https://lore.kernel.org/r/1601910316-24111-1-git-send-email-anand.ashok.dumbre@xilinx.com Signed-off-by: Jonathan Cameron --- drivers/iio/industrialio-core.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) (limited to 'drivers/iio') diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c index 261d3b17edc9..9955672fc16a 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -594,6 +594,7 @@ static ssize_t __iio_format_value(char *buf, size_t len, unsigned int type, { unsigned long long tmp; int tmp0, tmp1; + s64 tmp2; bool scale_db = false; switch (type) { @@ -616,10 +617,13 @@ static ssize_t __iio_format_value(char *buf, size_t len, unsigned int type, else return scnprintf(buf, len, "%d.%09u", vals[0], vals[1]); case IIO_VAL_FRACTIONAL: - tmp = div_s64((s64)vals[0] * 1000000000LL, vals[1]); + tmp2 = div_s64((s64)vals[0] * 1000000000LL, vals[1]); tmp1 = vals[1]; - tmp0 = (int)div_s64_rem(tmp, 1000000000, &tmp1); - return scnprintf(buf, len, "%d.%09u", tmp0, abs(tmp1)); + tmp0 = (int)div_s64_rem(tmp2, 1000000000, &tmp1); + if ((tmp2 < 0) && (tmp0 == 0)) + return snprintf(buf, len, "-0.%09u", abs(tmp1)); + else + return snprintf(buf, len, "%d.%09u", tmp0, abs(tmp1)); case IIO_VAL_FRACTIONAL_LOG2: tmp = shift_right((s64)vals[0] * 1000000000LL, vals[1]); tmp0 = (int)div_s64_rem(tmp, 1000000000LL, &tmp1); -- cgit v1.2.3 From 28963f2f6b46d75bda8fed15bd5ce9923427a40d Mon Sep 17 00:00:00 2001 From: Alexandru Ardelean Date: Thu, 1 Oct 2020 17:10:48 +0300 Subject: iio: adc: ad7298: rework external ref setup & remove platform data This change removes the old platform data for ad7298. It is only used to provide whether to use an external regulator as a reference. So, the logic is inverted a bit. The driver now tries to obtain a regulator. If one is provided, then the external ref is used. The rest of the logic should work as before. Signed-off-by: Alexandru Ardelean Link: https://lore.kernel.org/r/20201001141048.69050-1-alexandru.ardelean@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7298.c | 17 +++++++++-------- include/linux/platform_data/ad7298.h | 19 ------------------- 2 files changed, 9 insertions(+), 27 deletions(-) delete mode 100644 include/linux/platform_data/ad7298.h (limited to 'drivers/iio') diff --git a/drivers/iio/adc/ad7298.c b/drivers/iio/adc/ad7298.c index 48d43cb0f932..fa1047f74a1f 100644 --- a/drivers/iio/adc/ad7298.c +++ b/drivers/iio/adc/ad7298.c @@ -23,8 +23,6 @@ #include #include -#include - #define AD7298_WRITE BIT(15) /* write to the control register */ #define AD7298_REPEAT BIT(14) /* repeated conversion enable */ #define AD7298_CH(x) BIT(13 - (x)) /* channel select */ @@ -283,7 +281,6 @@ static const struct iio_info ad7298_info = { static int ad7298_probe(struct spi_device *spi) { - struct ad7298_platform_data *pdata = spi->dev.platform_data; struct ad7298_state *st; struct iio_dev *indio_dev; int ret; @@ -294,14 +291,18 @@ static int ad7298_probe(struct spi_device *spi) st = iio_priv(indio_dev); - if (pdata && pdata->ext_ref) + st->reg = devm_regulator_get_optional(&spi->dev, "vref"); + if (!IS_ERR(st->reg)) { st->ext_ref = AD7298_EXTREF; + } else { + ret = PTR_ERR(st->reg); + if (ret != -ENODEV) + return ret; - if (st->ext_ref) { - st->reg = devm_regulator_get(&spi->dev, "vref"); - if (IS_ERR(st->reg)) - return PTR_ERR(st->reg); + st->reg = NULL; + } + if (st->reg) { ret = regulator_enable(st->reg); if (ret) return ret; diff --git a/include/linux/platform_data/ad7298.h b/include/linux/platform_data/ad7298.h deleted file mode 100644 index 3e0ffe2d5d3d..000000000000 --- a/include/linux/platform_data/ad7298.h +++ /dev/null @@ -1,19 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * AD7298 SPI ADC driver - * - * Copyright 2011 Analog Devices Inc. - */ - -#ifndef __LINUX_PLATFORM_DATA_AD7298_H__ -#define __LINUX_PLATFORM_DATA_AD7298_H__ - -/** - * struct ad7298_platform_data - Platform data for the ad7298 ADC driver - * @ext_ref: Whether to use an external reference voltage. - **/ -struct ad7298_platform_data { - bool ext_ref; -}; - -#endif /* IIO_ADC_AD7298_H_ */ -- cgit v1.2.3 From 223f4d9517f8d97721647297b1cde41241a45233 Mon Sep 17 00:00:00 2001 From: Alexandru Ardelean Date: Thu, 1 Oct 2020 17:10:04 +0300 Subject: iio: dac: ad7303: remove platform data header The information in the ad7303 platform_data header is unused, so it's dead code. This change removes it and it's inclusion from the driver. Signed-off-by: Alexandru Ardelean Link: https://lore.kernel.org/r/20201001141004.53846-1-alexandru.ardelean@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/dac/ad7303.c | 2 -- include/linux/platform_data/ad7303.h | 20 -------------------- 2 files changed, 22 deletions(-) delete mode 100644 include/linux/platform_data/ad7303.h (limited to 'drivers/iio') diff --git a/drivers/iio/dac/ad7303.c b/drivers/iio/dac/ad7303.c index 2e46def9d8ee..dbb4645ab6b1 100644 --- a/drivers/iio/dac/ad7303.c +++ b/drivers/iio/dac/ad7303.c @@ -17,8 +17,6 @@ #include #include -#include - #define AD7303_CFG_EXTERNAL_VREF BIT(15) #define AD7303_CFG_POWER_DOWN(ch) BIT(11 + (ch)) #define AD7303_CFG_ADDR_OFFSET 10 diff --git a/include/linux/platform_data/ad7303.h b/include/linux/platform_data/ad7303.h deleted file mode 100644 index c2bd0a13bea1..000000000000 --- a/include/linux/platform_data/ad7303.h +++ /dev/null @@ -1,20 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * Analog Devices AD7303 DAC driver - * - * Copyright 2013 Analog Devices Inc. - */ - -#ifndef __IIO_ADC_AD7303_H__ -#define __IIO_ADC_AD7303_H__ - -/** - * struct ad7303_platform_data - AD7303 platform data - * @use_external_ref: If set to true use an external voltage reference connected - * to the REF pin, otherwise use the internal reference derived from Vdd. - */ -struct ad7303_platform_data { - bool use_external_ref; -}; - -#endif -- cgit v1.2.3 From 681ab2ce293638480f5395c73e5430dfd517015d Mon Sep 17 00:00:00 2001 From: Rikard Falkeborn Date: Thu, 1 Oct 2020 01:29:39 +0200 Subject: iio: accel: mma8452: Constify static struct attribute_group The only usage of mma8452_event_attribute_group is to assign its address to the event_attrs field in the iio_info struct, which is a const pointer. Make it const to allow the compiler to put it in read-only memory. This was the only non-const static struct in drivers/iio. Signed-off-by: Rikard Falkeborn Link: https://lore.kernel.org/r/20200930232939.31131-1-rikard.falkeborn@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/accel/mma8452.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/iio') diff --git a/drivers/iio/accel/mma8452.c b/drivers/iio/accel/mma8452.c index bf1d2c8afdbd..b0176d936423 100644 --- a/drivers/iio/accel/mma8452.c +++ b/drivers/iio/accel/mma8452.c @@ -1187,7 +1187,7 @@ static struct attribute *mma8452_event_attributes[] = { NULL, }; -static struct attribute_group mma8452_event_attribute_group = { +static const struct attribute_group mma8452_event_attribute_group = { .attrs = mma8452_event_attributes, }; -- cgit v1.2.3 From 691f453951c4af9a5dd3a4f75f4860b997e73c3a Mon Sep 17 00:00:00 2001 From: Tom Rix Date: Tue, 27 Oct 2020 13:14:36 -0700 Subject: iio: light: apds9960: remove unneeded semicolon A semicolon is not needed after a switch statement. Signed-off-by: Tom Rix Acked-by: Matt Ranostay Link: https://lore.kernel.org/r/20201027201436.1597726-1-trix@redhat.com Signed-off-by: Jonathan Cameron --- drivers/iio/light/apds9960.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/iio') diff --git a/drivers/iio/light/apds9960.c b/drivers/iio/light/apds9960.c index 9afb3fcc74e6..547e7f9d6920 100644 --- a/drivers/iio/light/apds9960.c +++ b/drivers/iio/light/apds9960.c @@ -561,7 +561,7 @@ static int apds9960_write_raw(struct iio_dev *indio_dev, } default: return -EINVAL; - }; + } return 0; } -- cgit v1.2.3 From 4a6261c36da770369a7383c2455d54addb1a7c36 Mon Sep 17 00:00:00 2001 From: Tom Rix Date: Tue, 27 Oct 2020 13:11:28 -0700 Subject: iio/adc: ingenic: remove unneeded semicolon A semicolon is not needed after a switch statement. Signed-off-by: Tom Rix Link: https://lore.kernel.org/r/20201027201128.1597230-1-trix@redhat.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ingenic-adc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/iio') diff --git a/drivers/iio/adc/ingenic-adc.c b/drivers/iio/adc/ingenic-adc.c index 92b25083e23f..7886cdca5a5e 100644 --- a/drivers/iio/adc/ingenic-adc.c +++ b/drivers/iio/adc/ingenic-adc.c @@ -542,7 +542,7 @@ static int ingenic_adc_read_avail(struct iio_dev *iio_dev, return IIO_AVAIL_LIST; default: return -EINVAL; - }; + } } static int ingenic_adc_read_chan_info_raw(struct iio_dev *iio_dev, -- cgit v1.2.3 From 7f96027cc454e0d2b13938b68c1e213926eca560 Mon Sep 17 00:00:00 2001 From: Tom Rix Date: Tue, 27 Oct 2020 13:08:53 -0700 Subject: iio: adc: at91-sama5d2_adc: remove unneeded semicolon A semicolon is not needed after a switch statement. Signed-off-by: Tom Rix Link: https://lore.kernel.org/r/20201027200853.1596699-1-trix@redhat.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/at91-sama5d2_adc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/iio') diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c index b917a4714a9c..56cb9a8521be 100644 --- a/drivers/iio/adc/at91-sama5d2_adc.c +++ b/drivers/iio/adc/at91-sama5d2_adc.c @@ -1472,7 +1472,7 @@ static int at91_adc_write_raw(struct iio_dev *indio_dev, return 0; default: return -EINVAL; - }; + } } static void at91_adc_dma_init(struct platform_device *pdev) -- cgit v1.2.3 From 3516ebc8a400fc77957059ecc369850b4e04eacf Mon Sep 17 00:00:00 2001 From: Tom Rix Date: Sat, 31 Oct 2020 06:45:06 -0700 Subject: iio: pressure: bmp280: remove unneeded semicolon A semicolon is not needed after a switch statement. Signed-off-by: Tom Rix Link: https://lore.kernel.org/r/20201031134506.2134698-1-trix@redhat.com Signed-off-by: Jonathan Cameron --- drivers/iio/pressure/bmp280-regmap.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/iio') diff --git a/drivers/iio/pressure/bmp280-regmap.c b/drivers/iio/pressure/bmp280-regmap.c index 08c00ac32bda..da136dbadc8f 100644 --- a/drivers/iio/pressure/bmp280-regmap.c +++ b/drivers/iio/pressure/bmp280-regmap.c @@ -13,7 +13,7 @@ static bool bmp180_is_writeable_reg(struct device *dev, unsigned int reg) return true; default: return false; - }; + } } static bool bmp180_is_volatile_reg(struct device *dev, unsigned int reg) @@ -51,7 +51,7 @@ static bool bmp280_is_writeable_reg(struct device *dev, unsigned int reg) return true; default: return false; - }; + } } static bool bmp280_is_volatile_reg(struct device *dev, unsigned int reg) -- cgit v1.2.3 From b3b3ef6a082fceeab38d2a28f69bc7e69ef80f92 Mon Sep 17 00:00:00 2001 From: Tom Rix Date: Sat, 31 Oct 2020 06:43:19 -0700 Subject: iio: magnetometer: bmc150: remove unneeded semicolon A semicolon is not needed after a switch statement. Signed-off-by: Tom Rix Link: https://lore.kernel.org/r/20201031134319.2134314-1-trix@redhat.com Signed-off-by: Jonathan Cameron --- drivers/iio/magnetometer/bmc150_magn.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/iio') diff --git a/drivers/iio/magnetometer/bmc150_magn.c b/drivers/iio/magnetometer/bmc150_magn.c index fc6840f9c1fa..73e55ec815ec 100644 --- a/drivers/iio/magnetometer/bmc150_magn.c +++ b/drivers/iio/magnetometer/bmc150_magn.c @@ -190,7 +190,7 @@ static bool bmc150_magn_is_writeable_reg(struct device *dev, unsigned int reg) return true; default: return false; - }; + } } static bool bmc150_magn_is_volatile_reg(struct device *dev, unsigned int reg) -- cgit v1.2.3 From 8bb97bab3f13f396f53d32defd4f267309733884 Mon Sep 17 00:00:00 2001 From: Vaishnav M A Date: Mon, 19 Oct 2020 01:21:02 +0530 Subject: iio: proximity: vl53l0x-i2c add i2c_device_id Add i2c_device_id table for the vl53l0x-i2c driver, helps in device instantiation using i2c_new_client_device() or from userspace in cases where device-tree based description is not possible now, like device(s) on a gbphy i2c adapter created by greybus. Signed-off-by: Vaishnav M A Link: https://lore.kernel.org/r/20201018195102.GA814713@ubuntu Signed-off-by: Jonathan Cameron --- drivers/iio/proximity/vl53l0x-i2c.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers/iio') diff --git a/drivers/iio/proximity/vl53l0x-i2c.c b/drivers/iio/proximity/vl53l0x-i2c.c index 235e125aeb3a..cf38144b6f95 100644 --- a/drivers/iio/proximity/vl53l0x-i2c.c +++ b/drivers/iio/proximity/vl53l0x-i2c.c @@ -225,6 +225,12 @@ static int vl53l0x_probe(struct i2c_client *client) return devm_iio_device_register(&client->dev, indio_dev); } +static const struct i2c_device_id vl53l0x_id[] = { + { "vl53l0x", 0}, + { } +}; +MODULE_DEVICE_TABLE(i2c, vl53l0x_id); + static const struct of_device_id st_vl53l0x_dt_match[] = { { .compatible = "st,vl53l0x", }, { } @@ -237,6 +243,7 @@ static struct i2c_driver vl53l0x_driver = { .of_match_table = st_vl53l0x_dt_match, }, .probe_new = vl53l0x_probe, + .id_table = vl53l0x_id, }; module_i2c_driver(vl53l0x_driver); -- cgit v1.2.3 From 41a4b8f13a39f846747f5cffc58c315e72a29606 Mon Sep 17 00:00:00 2001 From: Vaishnav M A Date: Mon, 19 Oct 2020 01:23:57 +0530 Subject: iio: light: vcnl4035 add i2c_device_id Add i2c_device_id table for the vcnl4035 driver, enabling device instantiation using i2c_new_client_device() or from userspace in cases where device-tree based description is not possible now, like device(s) on a gbphy i2c adapter created by greybus. Signed-off-by: Vaishnav M A Link: https://lore.kernel.org/r/20201018195357.GA814864@ubuntu Signed-off-by: Jonathan Cameron --- drivers/iio/light/vcnl4035.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers/iio') diff --git a/drivers/iio/light/vcnl4035.c b/drivers/iio/light/vcnl4035.c index 765c44adac57..73a28e30dddc 100644 --- a/drivers/iio/light/vcnl4035.c +++ b/drivers/iio/light/vcnl4035.c @@ -652,6 +652,12 @@ static const struct dev_pm_ops vcnl4035_pm_ops = { vcnl4035_runtime_resume, NULL) }; +static const struct i2c_device_id vcnl4035_id[] = { + { "vcnl4035", 0}, + { } +}; +MODULE_DEVICE_TABLE(i2c, vcnl4035_id); + static const struct of_device_id vcnl4035_of_match[] = { { .compatible = "vishay,vcnl4035", }, { } @@ -666,6 +672,7 @@ static struct i2c_driver vcnl4035_driver = { }, .probe = vcnl4035_probe, .remove = vcnl4035_remove, + .id_table = vcnl4035_id, }; module_i2c_driver(vcnl4035_driver); -- cgit v1.2.3 From d884da1a75489e10ccf65fdca41ce8d917bcfbe1 Mon Sep 17 00:00:00 2001 From: Vaishnav M A Date: Mon, 19 Oct 2020 02:05:52 +0530 Subject: iio:light:tsl2563 use generic fw accessors Replace of_property_read_u32() with device_property_read_u32(), when reading the amstaos,cover-comp-gain.This opens up the possibility of passing the properties during platform instantiation of the device by a suitable populated struct property_entry. Additionally, a minor change in logic is added to remove the of_node present check. Signed-off-by: Vaishnav M A Link: https://lore.kernel.org/r/20201018203552.GA816421@ubuntu Signed-off-by: Jonathan Cameron --- drivers/iio/light/tsl2563.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) (limited to 'drivers/iio') diff --git a/drivers/iio/light/tsl2563.c b/drivers/iio/light/tsl2563.c index abc8d7db8dc1..5bf2bfbc5379 100644 --- a/drivers/iio/light/tsl2563.c +++ b/drivers/iio/light/tsl2563.c @@ -12,6 +12,8 @@ */ #include +#include +#include #include #include #include @@ -703,7 +705,6 @@ static int tsl2563_probe(struct i2c_client *client, struct iio_dev *indio_dev; struct tsl2563_chip *chip; struct tsl2563_platform_data *pdata = client->dev.platform_data; - struct device_node *np = client->dev.of_node; int err = 0; u8 id = 0; @@ -738,13 +739,14 @@ static int tsl2563_probe(struct i2c_client *client, chip->calib0 = tsl2563_calib_from_sysfs(CALIB_BASE_SYSFS); chip->calib1 = tsl2563_calib_from_sysfs(CALIB_BASE_SYSFS); - if (pdata) + if (pdata) { chip->cover_comp_gain = pdata->cover_comp_gain; - else if (np) - of_property_read_u32(np, "amstaos,cover-comp-gain", - &chip->cover_comp_gain); - else - chip->cover_comp_gain = 1; + } else { + err = device_property_read_u32(&client->dev, "amstaos,cover-comp-gain", + &chip->cover_comp_gain); + if (err) + chip->cover_comp_gain = 1; + } dev_info(&client->dev, "model %d, rev. %d\n", id >> 4, id & 0x0f); indio_dev->name = client->name; -- cgit v1.2.3 From a3c089b9cf277304497522f231c2c03f7f8bb2fd Mon Sep 17 00:00:00 2001 From: Tom Rix Date: Mon, 19 Oct 2020 10:28:24 -0700 Subject: iio: remove unneeded break A break is not needed if it is preceded by a return Signed-off-by: Tom Rix Reviewed-by: Martin Blumenstingl Link: https://lore.kernel.org/r/20201019172824.32166-1-trix@redhat.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/meson_saradc.c | 2 -- drivers/iio/imu/bmi160/bmi160_core.c | 1 - 2 files changed, 3 deletions(-) (limited to 'drivers/iio') diff --git a/drivers/iio/adc/meson_saradc.c b/drivers/iio/adc/meson_saradc.c index e03988698755..66dc452d643a 100644 --- a/drivers/iio/adc/meson_saradc.c +++ b/drivers/iio/adc/meson_saradc.c @@ -593,13 +593,11 @@ static int meson_sar_adc_iio_info_read_raw(struct iio_dev *indio_dev, case IIO_CHAN_INFO_RAW: return meson_sar_adc_get_sample(indio_dev, chan, NO_AVERAGING, ONE_SAMPLE, val); - break; case IIO_CHAN_INFO_AVERAGE_RAW: return meson_sar_adc_get_sample(indio_dev, chan, MEAN_AVERAGING, EIGHT_SAMPLES, val); - break; case IIO_CHAN_INFO_SCALE: if (chan->type == IIO_VOLTAGE) { diff --git a/drivers/iio/imu/bmi160/bmi160_core.c b/drivers/iio/imu/bmi160/bmi160_core.c index 222ebb26f013..431076dc0d2c 100644 --- a/drivers/iio/imu/bmi160/bmi160_core.c +++ b/drivers/iio/imu/bmi160/bmi160_core.c @@ -486,7 +486,6 @@ static int bmi160_write_raw(struct iio_dev *indio_dev, case IIO_CHAN_INFO_SCALE: return bmi160_set_scale(data, bmi160_to_sensor(chan->type), val2); - break; case IIO_CHAN_INFO_SAMP_FREQ: return bmi160_set_odr(data, bmi160_to_sensor(chan->type), val, val2); -- cgit v1.2.3 From 1d4ef9b39ebecca827642b8897d2d79ea2026682 Mon Sep 17 00:00:00 2001 From: Cristian Pop Date: Mon, 28 Sep 2020 12:09:55 +0300 Subject: iio: core: Add optional symbolic label to a device channel If a label is defined in the device tree for this channel add that to the channel specific attributes. This is useful for userspace to be able to identify an individual channel. Signed-off-by: Cristian Pop Link: https://lore.kernel.org/r/20200928090959.88842-1-cristian.pop@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/industrialio-core.c | 41 +++++++++++++++++++++++++++++++++++++++++ include/linux/iio/iio.h | 6 ++++++ 2 files changed, 47 insertions(+) (limited to 'drivers/iio') diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c index 9955672fc16a..0402be441ffb 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -673,6 +673,19 @@ ssize_t iio_format_value(char *buf, unsigned int type, int size, int *vals) } EXPORT_SYMBOL_GPL(iio_format_value); +static ssize_t iio_read_channel_label(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct iio_dev *indio_dev = dev_to_iio_dev(dev); + struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); + + if (!indio_dev->info->read_label) + return -EINVAL; + + return indio_dev->info->read_label(indio_dev, this_attr->c, buf); +} + static ssize_t iio_read_channel_info(struct device *dev, struct device_attribute *attr, char *buf) @@ -1141,6 +1154,29 @@ error_iio_dev_attr_free: return ret; } +static int iio_device_add_channel_label(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan) +{ + struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev); + int ret; + + if (!indio_dev->info->read_label) + return 0; + + ret = __iio_add_chan_devattr("label", + chan, + &iio_read_channel_label, + NULL, + 0, + IIO_SEPARATE, + &indio_dev->dev, + &iio_dev_opaque->channel_attr_list); + if (ret < 0) + return ret; + + return 1; +} + static int iio_device_add_info_mask_type(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, enum iio_shared_by shared_by, @@ -1274,6 +1310,11 @@ static int iio_device_add_channel_sysfs(struct iio_dev *indio_dev, return ret; attrcount += ret; + ret = iio_device_add_channel_label(indio_dev, chan); + if (ret < 0) + return ret; + attrcount += ret; + if (chan->ext_info) { unsigned int i = 0; for (ext_info = chan->ext_info; ext_info->name; ext_info++) { diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h index 2e45b3ceafa7..9a3cf4815148 100644 --- a/include/linux/iio/iio.h +++ b/include/linux/iio/iio.h @@ -362,6 +362,8 @@ struct iio_trigger; /* forward declaration */ * and max. For lists, all possible values are enumerated. * @write_raw: function to write a value to the device. * Parameters are the same as for read_raw. + * @read_label: function to request label name for a specified label, + * for better channel identification. * @write_raw_get_fmt: callback function to query the expected * format/precision. If not set by the driver, write_raw * returns IIO_VAL_INT_PLUS_MICRO. @@ -420,6 +422,10 @@ struct iio_info { int val2, long mask); + int (*read_label)(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + char *label); + int (*write_raw_get_fmt)(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, long mask); -- cgit v1.2.3 From 75ed0be7200def4015654d896bc3c8e3b22ccefa Mon Sep 17 00:00:00 2001 From: Cristian Pop Date: Mon, 28 Sep 2020 12:09:57 +0300 Subject: iio: adc: ad7768-1: Add channel labels. For better identification of the channels. Signed-off-by: Cristian Pop Link: https://lore.kernel.org/r/20200928090959.88842-3-cristian.pop@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7768-1.c | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) (limited to 'drivers/iio') diff --git a/drivers/iio/adc/ad7768-1.c b/drivers/iio/adc/ad7768-1.c index 0e93b0766eb4..5c0cbee03230 100644 --- a/drivers/iio/adc/ad7768-1.c +++ b/drivers/iio/adc/ad7768-1.c @@ -161,6 +161,7 @@ struct ad7768_state { struct completion completion; struct iio_trigger *trig; struct gpio_desc *gpio_sync_in; + const char *labels[ARRAY_SIZE(ad7768_channels)]; /* * DMA (thus cache coherency maintenance) requires the * transfer buffers to live in their own cache lines. @@ -407,6 +408,14 @@ static int ad7768_write_raw(struct iio_dev *indio_dev, } } +static int ad7768_read_label(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, char *label) +{ + struct ad7768_state *st = iio_priv(indio_dev); + + return sprintf(label, "%s\n", st->labels[chan->channel]); +} + static struct attribute *ad7768_attributes[] = { &iio_dev_attr_sampling_frequency_available.dev_attr.attr, NULL @@ -420,6 +429,7 @@ static const struct iio_info ad7768_info = { .attrs = &ad7768_group, .read_raw = &ad7768_read_raw, .write_raw = &ad7768_write_raw, + .read_label = ad7768_read_label, .debugfs_reg_access = &ad7768_reg_access, }; @@ -532,6 +542,33 @@ static void ad7768_clk_disable(void *data) clk_disable_unprepare(st->mclk); } +static int ad7768_set_channel_label(struct iio_dev *indio_dev, + int num_channels) +{ + struct ad7768_state *st = iio_priv(indio_dev); + struct device *device = indio_dev->dev.parent; + struct fwnode_handle *fwnode; + struct fwnode_handle *child; + const char *label; + int crt_ch = 0; + + fwnode = dev_fwnode(device); + fwnode_for_each_child_node(fwnode, child) { + if (fwnode_property_read_u32(child, "reg", &crt_ch)) + continue; + + if (crt_ch >= num_channels) + continue; + + if (fwnode_property_read_string(child, "label", &label)) + continue; + + st->labels[crt_ch] = label; + } + + return 0; +} + static int ad7768_probe(struct spi_device *spi) { struct ad7768_state *st; @@ -604,6 +641,10 @@ static int ad7768_probe(struct spi_device *spi) init_completion(&st->completion); + ret = ad7768_set_channel_label(indio_dev, ARRAY_SIZE(ad7768_channels)); + if (ret) + return ret; + ret = devm_request_irq(&spi->dev, spi->irq, &ad7768_interrupt, IRQF_TRIGGER_RISING | IRQF_ONESHOT, -- cgit v1.2.3 From 499da8bdb868ad4ca611beae98d9c6419731c572 Mon Sep 17 00:00:00 2001 From: Olivier Moysan Date: Thu, 5 Nov 2020 15:29:41 +0100 Subject: iio: adc: stm32-adc: dma transfers cleanup - Remove processing related to DMA in irq handler as this data transfer is managed directly in DMA callback. - Update comment in stm32_adc_set_watermark() function. Signed-off-by: Olivier Moysan Reviewed-by: Fabrice Gasnier Link: https://lore.kernel.org/r/20201105142941.27301-1-olivier.moysan@st.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/stm32-adc.c | 29 ++++++----------------------- 1 file changed, 6 insertions(+), 23 deletions(-) (limited to 'drivers/iio') diff --git a/drivers/iio/adc/stm32-adc.c b/drivers/iio/adc/stm32-adc.c index b3f31f147347..08be826f1462 100644 --- a/drivers/iio/adc/stm32-adc.c +++ b/drivers/iio/adc/stm32-adc.c @@ -1310,7 +1310,7 @@ static int stm32_adc_set_watermark(struct iio_dev *indio_dev, unsigned int val) * dma cyclic transfers are used, buffer is split into two periods. * There should be : * - always one buffer (period) dma is working on - * - one buffer (period) driver can push with iio_trigger_poll(). + * - one buffer (period) driver can push data. */ watermark = min(watermark, val * (unsigned)(sizeof(u16))); adc->rx_buf_sz = min(rx_buf_sz, watermark * 2 * adc->num_conv); @@ -1573,31 +1573,14 @@ static irqreturn_t stm32_adc_trigger_handler(int irq, void *p) dev_dbg(&indio_dev->dev, "%s bufi=%d\n", __func__, adc->bufi); - if (!adc->dma_chan) { - /* reset buffer index */ - adc->bufi = 0; - iio_push_to_buffers_with_timestamp(indio_dev, adc->buffer, - pf->timestamp); - } else { - int residue = stm32_adc_dma_residue(adc); - - while (residue >= indio_dev->scan_bytes) { - u16 *buffer = (u16 *)&adc->rx_buf[adc->bufi]; - - iio_push_to_buffers_with_timestamp(indio_dev, buffer, - pf->timestamp); - residue -= indio_dev->scan_bytes; - adc->bufi += indio_dev->scan_bytes; - if (adc->bufi >= adc->rx_buf_sz) - adc->bufi = 0; - } - } - + /* reset buffer index */ + adc->bufi = 0; + iio_push_to_buffers_with_timestamp(indio_dev, adc->buffer, + pf->timestamp); iio_trigger_notify_done(indio_dev->trig); /* re-enable eoc irq */ - if (!adc->dma_chan) - stm32_adc_conv_irq_enable(adc); + stm32_adc_conv_irq_enable(adc); return IRQ_HANDLED; } -- cgit v1.2.3 From 1f4877218f7e2c2b914aeb69a8a0f47d59c74717 Mon Sep 17 00:00:00 2001 From: Gene Chen Date: Tue, 20 Oct 2020 16:07:47 +0800 Subject: iio: adc: mt6360: Add ADC driver for MT6360 Add MT6360 ADC driver including Charger Current, Voltage, and Temperature. Signed-off-by: Gene Chen Link: https://lore.kernel.org/r/1603181267-15610-4-git-send-email-gene.chen.richtek@gmail.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/Kconfig | 11 ++ drivers/iio/adc/Makefile | 1 + drivers/iio/adc/mt6360-adc.c | 372 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 384 insertions(+) create mode 100644 drivers/iio/adc/mt6360-adc.c (limited to 'drivers/iio') diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index 17e9ceb9c6c4..15587a1bc80d 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -703,6 +703,17 @@ config MCP3911 This driver can also be built as a module. If so, the module will be called mcp3911. +config MEDIATEK_MT6360_ADC + tristate "Mediatek MT6360 ADC driver" + depends on MFD_MT6360 + select IIO_BUFFER + select IIO_TRIGGERED_BUFFER + help + Say Y here to enable MT6360 ADC support. + Integrated for System Monitoring includes + is used in smartphones and tablets and supports a 11 channel + general purpose ADC. + config MEDIATEK_MT6577_AUXADC tristate "MediaTek AUXADC driver" depends on ARCH_MEDIATEK || COMPILE_TEST diff --git a/drivers/iio/adc/Makefile b/drivers/iio/adc/Makefile index 90f94ada7b30..5fca90ada0ec 100644 --- a/drivers/iio/adc/Makefile +++ b/drivers/iio/adc/Makefile @@ -65,6 +65,7 @@ obj-$(CONFIG_MAX9611) += max9611.o obj-$(CONFIG_MCP320X) += mcp320x.o obj-$(CONFIG_MCP3422) += mcp3422.o obj-$(CONFIG_MCP3911) += mcp3911.o +obj-$(CONFIG_MEDIATEK_MT6360_ADC) += mt6360-adc.o obj-$(CONFIG_MEDIATEK_MT6577_AUXADC) += mt6577_auxadc.o obj-$(CONFIG_MEN_Z188_ADC) += men_z188_adc.o obj-$(CONFIG_MESON_SARADC) += meson_saradc.o diff --git a/drivers/iio/adc/mt6360-adc.c b/drivers/iio/adc/mt6360-adc.c new file mode 100644 index 000000000000..f57db3056fbe --- /dev/null +++ b/drivers/iio/adc/mt6360-adc.c @@ -0,0 +1,372 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#define MT6360_REG_PMUCHGCTRL3 0x313 +#define MT6360_REG_PMUADCCFG 0x356 +#define MT6360_REG_PMUADCIDLET 0x358 +#define MT6360_REG_PMUADCRPT1 0x35A + +/* PMUCHGCTRL3 0x313 */ +#define MT6360_AICR_MASK GENMASK(7, 2) +#define MT6360_AICR_SHFT 2 +#define MT6360_AICR_400MA 0x6 +/* PMUADCCFG 0x356 */ +#define MT6360_ADCEN_MASK BIT(15) +/* PMUADCRPT1 0x35A */ +#define MT6360_PREFERCH_MASK GENMASK(7, 4) +#define MT6360_PREFERCH_SHFT 4 +#define MT6360_RPTCH_MASK GENMASK(3, 0) +#define MT6360_NO_PREFER 15 + +/* Time in ms */ +#define ADC_WAIT_TIME_MS 25 +#define ADC_CONV_TIMEOUT_MS 100 +#define ADC_LOOP_TIME_US 2000 + +enum { + MT6360_CHAN_USBID = 0, + MT6360_CHAN_VBUSDIV5, + MT6360_CHAN_VBUSDIV2, + MT6360_CHAN_VSYS, + MT6360_CHAN_VBAT, + MT6360_CHAN_IBUS, + MT6360_CHAN_IBAT, + MT6360_CHAN_CHG_VDDP, + MT6360_CHAN_TEMP_JC, + MT6360_CHAN_VREF_TS, + MT6360_CHAN_TS, + MT6360_CHAN_MAX +}; + +struct mt6360_adc_data { + struct device *dev; + struct regmap *regmap; + /* Due to only one set of ADC control, this lock is used to prevent the race condition */ + struct mutex adc_lock; + ktime_t last_off_timestamps[MT6360_CHAN_MAX]; +}; + +static int mt6360_adc_read_channel(struct mt6360_adc_data *mad, int channel, int *val) +{ + __be16 adc_enable; + u8 rpt[3]; + ktime_t predict_end_t, timeout; + unsigned int pre_wait_time; + int ret; + + mutex_lock(&mad->adc_lock); + + /* Select the preferred ADC channel */ + ret = regmap_update_bits(mad->regmap, MT6360_REG_PMUADCRPT1, MT6360_PREFERCH_MASK, + channel << MT6360_PREFERCH_SHFT); + if (ret) + goto out_adc_lock; + + adc_enable = cpu_to_be16(MT6360_ADCEN_MASK | BIT(channel)); + ret = regmap_raw_write(mad->regmap, MT6360_REG_PMUADCCFG, &adc_enable, sizeof(adc_enable)); + if (ret) + goto out_adc_lock; + + predict_end_t = ktime_add_ms(mad->last_off_timestamps[channel], 2 * ADC_WAIT_TIME_MS); + + if (ktime_after(ktime_get(), predict_end_t)) + pre_wait_time = ADC_WAIT_TIME_MS; + else + pre_wait_time = 3 * ADC_WAIT_TIME_MS; + + if (msleep_interruptible(pre_wait_time)) { + ret = -ERESTARTSYS; + goto out_adc_conv; + } + + timeout = ktime_add_ms(ktime_get(), ADC_CONV_TIMEOUT_MS); + while (true) { + ret = regmap_raw_read(mad->regmap, MT6360_REG_PMUADCRPT1, rpt, sizeof(rpt)); + if (ret) + goto out_adc_conv; + + /* + * There are two functions, ZCV and TypeC OTP, running ADC VBAT and TS in + * background, and ADC samples are taken on a fixed frequency no matter read the + * previous one or not. + * To avoid conflict, We set minimum time threshold after enable ADC and + * check report channel is the same. + * The worst case is run the same ADC twice and background function is also running, + * ADC conversion sequence is desire channel before start ADC, background ADC, + * desire channel after start ADC. + * So the minimum correct data is three times of typical conversion time. + */ + if ((rpt[0] & MT6360_RPTCH_MASK) == channel) + break; + + if (ktime_compare(ktime_get(), timeout) > 0) { + ret = -ETIMEDOUT; + goto out_adc_conv; + } + + usleep_range(ADC_LOOP_TIME_US / 2, ADC_LOOP_TIME_US); + } + + *val = rpt[1] << 8 | rpt[2]; + ret = IIO_VAL_INT; + +out_adc_conv: + /* Only keep ADC enable */ + adc_enable = cpu_to_be16(MT6360_ADCEN_MASK); + regmap_raw_write(mad->regmap, MT6360_REG_PMUADCCFG, &adc_enable, sizeof(adc_enable)); + mad->last_off_timestamps[channel] = ktime_get(); + /* Config prefer channel to NO_PREFER */ + regmap_update_bits(mad->regmap, MT6360_REG_PMUADCRPT1, MT6360_PREFERCH_MASK, + MT6360_NO_PREFER << MT6360_PREFERCH_SHFT); +out_adc_lock: + mutex_unlock(&mad->adc_lock); + + return ret; +} + +static int mt6360_adc_read_scale(struct mt6360_adc_data *mad, int channel, int *val, int *val2) +{ + unsigned int regval; + int ret; + + switch (channel) { + case MT6360_CHAN_USBID: + case MT6360_CHAN_VSYS: + case MT6360_CHAN_VBAT: + case MT6360_CHAN_CHG_VDDP: + case MT6360_CHAN_VREF_TS: + case MT6360_CHAN_TS: + *val = 1250; + return IIO_VAL_INT; + case MT6360_CHAN_VBUSDIV5: + *val = 6250; + return IIO_VAL_INT; + case MT6360_CHAN_VBUSDIV2: + case MT6360_CHAN_IBUS: + case MT6360_CHAN_IBAT: + *val = 2500; + + if (channel == MT6360_CHAN_IBUS) { + /* IBUS will be affected by input current limit for the different Ron */ + /* Check whether the config is <400mA or not */ + ret = regmap_read(mad->regmap, MT6360_REG_PMUCHGCTRL3, ®val); + if (ret) + return ret; + + regval = (regval & MT6360_AICR_MASK) >> MT6360_AICR_SHFT; + if (regval < MT6360_AICR_400MA) + *val = 1900; + } + + return IIO_VAL_INT; + case MT6360_CHAN_TEMP_JC: + *val = 105; + *val2 = 100; + return IIO_VAL_FRACTIONAL; + } + + return -EINVAL; +} + +static int mt6360_adc_read_offset(struct mt6360_adc_data *mad, int channel, int *val) +{ + *val = (channel == MT6360_CHAN_TEMP_JC) ? -80 : 0; + return IIO_VAL_INT; +} + +static int mt6360_adc_read_raw(struct iio_dev *iio_dev, const struct iio_chan_spec *chan, + int *val, int *val2, long mask) +{ + struct mt6360_adc_data *mad = iio_priv(iio_dev); + + switch (mask) { + case IIO_CHAN_INFO_RAW: + return mt6360_adc_read_channel(mad, chan->channel, val); + case IIO_CHAN_INFO_SCALE: + return mt6360_adc_read_scale(mad, chan->channel, val, val2); + case IIO_CHAN_INFO_OFFSET: + return mt6360_adc_read_offset(mad, chan->channel, val); + } + + return -EINVAL; +} + +static const char *mt6360_channel_labels[MT6360_CHAN_MAX] = { + "usbid", "vbusdiv5", "vbusdiv2", "vsys", "vbat", "ibus", "ibat", "chg_vddp", + "temp_jc", "vref_ts", "ts", +}; + +static int mt6360_adc_read_label(struct iio_dev *iio_dev, const struct iio_chan_spec *chan, + char *label) +{ + return snprintf(label, PAGE_SIZE, "%s\n", mt6360_channel_labels[chan->channel]); +} + +static const struct iio_info mt6360_adc_iio_info = { + .read_raw = mt6360_adc_read_raw, + .read_label = mt6360_adc_read_label, +}; + +#define MT6360_ADC_CHAN(_idx, _type) { \ + .type = _type, \ + .channel = MT6360_CHAN_##_idx, \ + .scan_index = MT6360_CHAN_##_idx, \ + .datasheet_name = #_idx, \ + .scan_type = { \ + .sign = 'u', \ + .realbits = 16, \ + .storagebits = 16, \ + .endianness = IIO_CPU, \ + }, \ + .indexed = 1, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \ + BIT(IIO_CHAN_INFO_SCALE) | \ + BIT(IIO_CHAN_INFO_OFFSET), \ +} + +static const struct iio_chan_spec mt6360_adc_channels[] = { + MT6360_ADC_CHAN(USBID, IIO_VOLTAGE), + MT6360_ADC_CHAN(VBUSDIV5, IIO_VOLTAGE), + MT6360_ADC_CHAN(VBUSDIV2, IIO_VOLTAGE), + MT6360_ADC_CHAN(VSYS, IIO_VOLTAGE), + MT6360_ADC_CHAN(VBAT, IIO_VOLTAGE), + MT6360_ADC_CHAN(IBUS, IIO_CURRENT), + MT6360_ADC_CHAN(IBAT, IIO_CURRENT), + MT6360_ADC_CHAN(CHG_VDDP, IIO_VOLTAGE), + MT6360_ADC_CHAN(TEMP_JC, IIO_TEMP), + MT6360_ADC_CHAN(VREF_TS, IIO_VOLTAGE), + MT6360_ADC_CHAN(TS, IIO_VOLTAGE), + IIO_CHAN_SOFT_TIMESTAMP(MT6360_CHAN_MAX), +}; + +static irqreturn_t mt6360_adc_trigger_handler(int irq, void *p) +{ + struct iio_poll_func *pf = p; + struct iio_dev *indio_dev = pf->indio_dev; + struct mt6360_adc_data *mad = iio_priv(indio_dev); + struct { + u16 values[MT6360_CHAN_MAX]; + int64_t timestamp; + } data __aligned(8); + int i = 0, bit, val, ret; + + memset(&data, 0, sizeof(data)); + for_each_set_bit(bit, indio_dev->active_scan_mask, indio_dev->masklength) { + ret = mt6360_adc_read_channel(mad, bit, &val); + if (ret < 0) { + dev_warn(&indio_dev->dev, "Failed to get channel %d conversion val\n", bit); + goto out; + } + + data.values[i++] = val; + } + iio_push_to_buffers_with_timestamp(indio_dev, &data, iio_get_time_ns(indio_dev)); +out: + iio_trigger_notify_done(indio_dev->trig); + + return IRQ_HANDLED; +} + +static inline int mt6360_adc_reset(struct mt6360_adc_data *info) +{ + __be16 adc_enable; + ktime_t all_off_time; + int i, ret; + + /* Clear ADC idle wait time to 0 */ + ret = regmap_write(info->regmap, MT6360_REG_PMUADCIDLET, 0); + if (ret) + return ret; + + /* Only keep ADC enable, but keep all channels off */ + adc_enable = cpu_to_be16(MT6360_ADCEN_MASK); + ret = regmap_raw_write(info->regmap, MT6360_REG_PMUADCCFG, &adc_enable, sizeof(adc_enable)); + if (ret) + return ret; + + /* Reset all channel off time to the current one */ + all_off_time = ktime_get(); + for (i = 0; i < MT6360_CHAN_MAX; i++) + info->last_off_timestamps[i] = all_off_time; + + return 0; +} + +static int mt6360_adc_probe(struct platform_device *pdev) +{ + struct mt6360_adc_data *mad; + struct regmap *regmap; + struct iio_dev *indio_dev; + int ret; + + regmap = dev_get_regmap(pdev->dev.parent, NULL); + if (!regmap) { + dev_err(&pdev->dev, "Failed to get parent regmap\n"); + return -ENODEV; + } + + indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*mad)); + if (!indio_dev) + return -ENOMEM; + + mad = iio_priv(indio_dev); + mad->dev = &pdev->dev; + mad->regmap = regmap; + mutex_init(&mad->adc_lock); + + ret = mt6360_adc_reset(mad); + if (ret < 0) { + dev_err(&pdev->dev, "Failed to reset adc\n"); + return ret; + } + + indio_dev->name = dev_name(&pdev->dev); + indio_dev->dev.parent = &pdev->dev; + indio_dev->info = &mt6360_adc_iio_info; + indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->channels = mt6360_adc_channels; + indio_dev->num_channels = ARRAY_SIZE(mt6360_adc_channels); + + ret = devm_iio_triggered_buffer_setup(&pdev->dev, indio_dev, NULL, + mt6360_adc_trigger_handler, NULL); + if (ret) { + dev_err(&pdev->dev, "Failed to allocate iio trigger buffer\n"); + return ret; + } + + return devm_iio_device_register(&pdev->dev, indio_dev); +} + +static const struct of_device_id __maybe_unused mt6360_adc_of_id[] = { + { .compatible = "mediatek,mt6360-adc", }, + {} +}; +MODULE_DEVICE_TABLE(of, mt6360_adc_of_id); + +static struct platform_driver mt6360_adc_driver = { + .driver = { + .name = "mt6360-adc", + .of_match_table = mt6360_adc_of_id, + }, + .probe = mt6360_adc_probe, +}; +module_platform_driver(mt6360_adc_driver); + +MODULE_AUTHOR("Gene Chen "); +MODULE_DESCRIPTION("MT6360 ADC Driver"); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.3 From 8dedcc3eee3aceb37832176f0a1b03d5687acda3 Mon Sep 17 00:00:00 2001 From: Alexandru Ardelean Date: Thu, 24 Sep 2020 11:41:55 +0300 Subject: iio: core: centralize ioctl() calls to the main chardev The aim of this is to improve a bit the organization of ioctl() calls in IIO core. Currently the chardev is split across IIO core sub-modules/files. The main chardev has to be able to handle ioctl() calls, and if we need to add buffer ioctl() calls, this would complicate things. The 'industrialio-core.c' file will provide a 'iio_device_ioctl()' which will iterate over a list of ioctls registered with the IIO device. These can be event ioctl() or buffer ioctl() calls, or something else. Each ioctl() handler will have to return a IIO_IOCTL_UNHANDLED code (which is positive 1), if the ioctl() did not handle the call in any. This eliminates any potential ambiguities about negative error codes, which should fail the call altogether. If any ioctl() returns 0, it was considered that it was serviced successfully and the loop will exit. This change also moves the handling of the IIO_GET_EVENT_FD_IOCTL command inside 'industrialio-event.c', where this is better suited. This patch is a combination of 2 other patches from an older series: Patch 1: iio: core: add simple centralized mechanism for ioctl() handlers Link: https://lore.kernel.org/linux-iio/20200427131100.50845-6-alexandru.ardelean@analog.com/ Patch 2: iio: core: use new common ioctl() mechanism Link: https://lore.kernel.org/linux-iio/20200427131100.50845-7-alexandru.ardelean@analog.com/ Signed-off-by: Alexandru Ardelean Link: https://lore.kernel.org/r/20200924084155.99406-1-alexandru.ardelean@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/iio_core.h | 15 ++++++++++- drivers/iio/industrialio-core.c | 56 ++++++++++++++++++++++++++++++---------- drivers/iio/industrialio-event.c | 28 +++++++++++++++++++- include/linux/iio/iio-opaque.h | 2 ++ 4 files changed, 85 insertions(+), 16 deletions(-) (limited to 'drivers/iio') diff --git a/drivers/iio/iio_core.h b/drivers/iio/iio_core.h index fd9a5f1d5e51..fced02cadcc3 100644 --- a/drivers/iio/iio_core.h +++ b/drivers/iio/iio_core.h @@ -17,6 +17,20 @@ struct iio_dev; extern struct device_type iio_device_type; +#define IIO_IOCTL_UNHANDLED 1 +struct iio_ioctl_handler { + struct list_head entry; + long (*ioctl)(struct iio_dev *indio_dev, struct file *filp, + unsigned int cmd, unsigned long arg); +}; + +long iio_device_ioctl(struct iio_dev *indio_dev, struct file *filp, + unsigned int cmd, unsigned long arg); + +void iio_device_ioctl_handler_register(struct iio_dev *indio_dev, + struct iio_ioctl_handler *h); +void iio_device_ioctl_handler_unregister(struct iio_ioctl_handler *h); + int __iio_add_chan_devattr(const char *postfix, struct iio_chan_spec const *chan, ssize_t (*func)(struct device *dev, @@ -74,7 +88,6 @@ static inline void iio_buffer_wakeup_poll(struct iio_dev *indio_dev) {} int iio_device_register_eventset(struct iio_dev *indio_dev); void iio_device_unregister_eventset(struct iio_dev *indio_dev); void iio_device_wakeup_eventset(struct iio_dev *indio_dev); -int iio_event_getfd(struct iio_dev *indio_dev); struct iio_event_interface; bool iio_event_enabled(const struct iio_event_interface *ev_int); diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c index 0402be441ffb..e53c771d66eb 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -1612,6 +1612,7 @@ struct iio_dev *iio_device_alloc(struct device *parent, int sizeof_priv) } dev_set_name(&dev->dev, "iio:device%d", dev->id); INIT_LIST_HEAD(&iio_dev_opaque->buffer_list); + INIT_LIST_HEAD(&iio_dev_opaque->ioctl_handlers); return dev; } @@ -1705,26 +1706,47 @@ static int iio_chrdev_release(struct inode *inode, struct file *filp) return 0; } -/* Somewhat of a cross file organization violation - ioctls here are actually - * event related */ +void iio_device_ioctl_handler_register(struct iio_dev *indio_dev, + struct iio_ioctl_handler *h) +{ + struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev); + + list_add_tail(&h->entry, &iio_dev_opaque->ioctl_handlers); +} + +void iio_device_ioctl_handler_unregister(struct iio_ioctl_handler *h) +{ + list_del(&h->entry); +} + static long iio_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) { struct iio_dev *indio_dev = filp->private_data; - int __user *ip = (int __user *)arg; - int fd; + struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev); + struct iio_ioctl_handler *h; + int ret = -ENODEV; + + mutex_lock(&indio_dev->info_exist_lock); + /** + * The NULL check here is required to prevent crashing when a device + * is being removed while userspace would still have open file handles + * to try to access this device. + */ if (!indio_dev->info) - return -ENODEV; - - if (cmd == IIO_GET_EVENT_FD_IOCTL) { - fd = iio_event_getfd(indio_dev); - if (fd < 0) - return fd; - if (copy_to_user(ip, &fd, sizeof(fd))) - return -EFAULT; - return 0; + goto out_unlock; + + ret = -EINVAL; + list_for_each_entry(h, &iio_dev_opaque->ioctl_handlers, entry) { + ret = h->ioctl(indio_dev, filp, cmd, arg); + if (ret != IIO_IOCTL_UNHANDLED) + break; } - return -EINVAL; + +out_unlock: + mutex_unlock(&indio_dev->info_exist_lock); + + return ret; } static const struct file_operations iio_buffer_fileops = { @@ -1841,6 +1863,9 @@ EXPORT_SYMBOL(__iio_device_register); **/ void iio_device_unregister(struct iio_dev *indio_dev) { + struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev); + struct iio_ioctl_handler *h, *t; + cdev_device_del(&indio_dev->chrdev, &indio_dev->dev); mutex_lock(&indio_dev->info_exist_lock); @@ -1851,6 +1876,9 @@ void iio_device_unregister(struct iio_dev *indio_dev) indio_dev->info = NULL; + list_for_each_entry_safe(h, t, &iio_dev_opaque->ioctl_handlers, entry) + list_del(&h->entry); + iio_device_wakeup_eventset(indio_dev); iio_buffer_wakeup_poll(indio_dev); diff --git a/drivers/iio/industrialio-event.c b/drivers/iio/industrialio-event.c index 99ba657b8568..7e532117ac55 100644 --- a/drivers/iio/industrialio-event.c +++ b/drivers/iio/industrialio-event.c @@ -31,6 +31,7 @@ * @flags: file operations related flags including busy flag. * @group: event interface sysfs attribute group * @read_lock: lock to protect kfifo read operations + * @ioctl_handler: handler for event ioctl() calls */ struct iio_event_interface { wait_queue_head_t wait; @@ -40,6 +41,7 @@ struct iio_event_interface { unsigned long flags; struct attribute_group group; struct mutex read_lock; + struct iio_ioctl_handler ioctl_handler; }; bool iio_event_enabled(const struct iio_event_interface *ev_int) @@ -187,7 +189,7 @@ static const struct file_operations iio_event_chrdev_fileops = { .llseek = noop_llseek, }; -int iio_event_getfd(struct iio_dev *indio_dev) +static int iio_event_getfd(struct iio_dev *indio_dev) { struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev); struct iio_event_interface *ev_int = iio_dev_opaque->event_interface; @@ -473,6 +475,24 @@ static void iio_setup_ev_int(struct iio_event_interface *ev_int) mutex_init(&ev_int->read_lock); } +static long iio_event_ioctl(struct iio_dev *indio_dev, struct file *filp, + unsigned int cmd, unsigned long arg) +{ + int __user *ip = (int __user *)arg; + int fd; + + if (cmd == IIO_GET_EVENT_FD_IOCTL) { + fd = iio_event_getfd(indio_dev); + if (fd < 0) + return fd; + if (copy_to_user(ip, &fd, sizeof(fd))) + return -EFAULT; + return 0; + } + + return IIO_IOCTL_UNHANDLED; +} + static const char *iio_event_group_name = "events"; int iio_device_register_eventset(struct iio_dev *indio_dev) { @@ -526,6 +546,10 @@ int iio_device_register_eventset(struct iio_dev *indio_dev) ev_int->group.attrs[attrn++] = &p->dev_attr.attr; indio_dev->groups[indio_dev->groupcounter++] = &ev_int->group; + ev_int->ioctl_handler.ioctl = iio_event_ioctl; + iio_device_ioctl_handler_register(&iio_dev_opaque->indio_dev, + &ev_int->ioctl_handler); + return 0; error_free_setup_event_lines: @@ -558,6 +582,8 @@ void iio_device_unregister_eventset(struct iio_dev *indio_dev) if (ev_int == NULL) return; + + iio_device_ioctl_handler_unregister(&ev_int->ioctl_handler); iio_free_chan_devattr_list(&ev_int->dev_attr_list); kfree(ev_int->group.attrs); kfree(ev_int); diff --git a/include/linux/iio/iio-opaque.h b/include/linux/iio/iio-opaque.h index f2e94196d31f..07c5a8e52ca8 100644 --- a/include/linux/iio/iio-opaque.h +++ b/include/linux/iio/iio-opaque.h @@ -11,6 +11,7 @@ * @channel_attr_list: keep track of automatically created channel * attributes * @chan_attr_group: group for all attrs in base directory + * @ioctl_handlers: ioctl handlers registered with the core handler * @debugfs_dentry: device specific debugfs dentry * @cached_reg_addr: cached register address for debugfs reads * @read_buf: read buffer to be used for the initial reg read @@ -22,6 +23,7 @@ struct iio_dev_opaque { struct list_head buffer_list; struct list_head channel_attr_list; struct attribute_group chan_attr_group; + struct list_head ioctl_handlers; #if defined(CONFIG_DEBUG_FS) struct dentry *debugfs_dentry; unsigned cached_reg_addr; -- cgit v1.2.3 From 89d1f72570027aa9724f00454f51885e27221413 Mon Sep 17 00:00:00 2001 From: Fabrice Gasnier Date: Fri, 6 Nov 2020 17:57:26 +0100 Subject: iio: adc: stm32-adc: adapt clock duty cycle for proper operation For proper operation, STM32 ADC should be used with a clock duty cycle of 50%, in the range of 49% to 51%. Depending on the clock tree, divider can be used in case clock duty cycle is out of this range. In case clk_get_scaled_duty_cycle() returns an error, kindly apply a divider by default (don't make the probe fail). Signed-off-by: Fabrice Gasnier Link: https://lore.kernel.org/r/1604681846-31234-1-git-send-email-fabrice.gasnier@st.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/stm32-adc-core.c | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-) (limited to 'drivers/iio') diff --git a/drivers/iio/adc/stm32-adc-core.c b/drivers/iio/adc/stm32-adc-core.c index cd870c089182..d64a9e8ff507 100644 --- a/drivers/iio/adc/stm32-adc-core.c +++ b/drivers/iio/adc/stm32-adc-core.c @@ -202,7 +202,7 @@ static int stm32h7_adc_clk_sel(struct platform_device *pdev, { u32 ckmode, presc, val; unsigned long rate; - int i, div; + int i, div, duty; /* stm32h7 bus clock is common for all ADC instances (mandatory) */ if (!priv->bclk) { @@ -226,6 +226,11 @@ static int stm32h7_adc_clk_sel(struct platform_device *pdev, return -EINVAL; } + /* If duty is an error, kindly use at least /2 divider */ + duty = clk_get_scaled_duty_cycle(priv->aclk, 100); + if (duty < 0) + dev_warn(&pdev->dev, "adc clock duty: %d\n", duty); + for (i = 0; i < ARRAY_SIZE(stm32h7_adc_ckmodes_spec); i++) { ckmode = stm32h7_adc_ckmodes_spec[i].ckmode; presc = stm32h7_adc_ckmodes_spec[i].presc; @@ -234,6 +239,13 @@ static int stm32h7_adc_clk_sel(struct platform_device *pdev, if (ckmode) continue; + /* + * For proper operation, clock duty cycle range is 49% + * to 51%. Apply at least /2 prescaler otherwise. + */ + if (div == 1 && (duty < 49 || duty > 51)) + continue; + if ((rate / div) <= priv->max_clk_rate) goto out; } @@ -246,6 +258,10 @@ static int stm32h7_adc_clk_sel(struct platform_device *pdev, return -EINVAL; } + duty = clk_get_scaled_duty_cycle(priv->bclk, 100); + if (duty < 0) + dev_warn(&pdev->dev, "bus clock duty: %d\n", duty); + for (i = 0; i < ARRAY_SIZE(stm32h7_adc_ckmodes_spec); i++) { ckmode = stm32h7_adc_ckmodes_spec[i].ckmode; presc = stm32h7_adc_ckmodes_spec[i].presc; @@ -254,6 +270,9 @@ static int stm32h7_adc_clk_sel(struct platform_device *pdev, if (!ckmode) continue; + if (div == 1 && (duty < 49 || duty > 51)) + continue; + if ((rate / div) <= priv->max_clk_rate) goto out; } -- cgit v1.2.3 From 24b284984e2d14aedc11b2f0211660df54e3b338 Mon Sep 17 00:00:00 2001 From: Alexandru Ardelean Date: Fri, 13 Nov 2020 11:16:48 +0200 Subject: iio: adc: ad7887: convert probe to device-managed functions This is conversion of the driver to use device-managed functions. The IIO registration and triggered buffer setup both have device-managed versions. The regulator disable needs to be handled via an action_or_reset handler. With these changes, the remove hook is removed, and the error path is cleaned up in probe. Signed-off-by: Alexandru Ardelean Link: https://lore.kernel.org/r/20201113091648.148589-1-alexandru.ardelean@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7887.c | 43 +++++++++++++++---------------------------- 1 file changed, 15 insertions(+), 28 deletions(-) (limited to 'drivers/iio') diff --git a/drivers/iio/adc/ad7887.c b/drivers/iio/adc/ad7887.c index 99a480ad3985..4f6f0e0e03ee 100644 --- a/drivers/iio/adc/ad7887.c +++ b/drivers/iio/adc/ad7887.c @@ -232,6 +232,13 @@ static const struct iio_info ad7887_info = { .read_raw = &ad7887_read_raw, }; +static void ad7887_reg_disable(void *data) +{ + struct regulator *reg = data; + + regulator_disable(reg); +} + static int ad7887_probe(struct spi_device *spi) { struct ad7887_platform_data *pdata = spi->dev.platform_data; @@ -258,6 +265,10 @@ static int ad7887_probe(struct spi_device *spi) ret = regulator_enable(st->reg); if (ret) return ret; + + ret = devm_add_action_or_reset(&spi->dev, ad7887_reg_disable, st->reg); + if (ret) + return ret; } st->chip_info = @@ -316,36 +327,13 @@ static int ad7887_probe(struct spi_device *spi) indio_dev->num_channels = st->chip_info->num_channels; } - ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time, + ret = devm_iio_triggered_buffer_setup(&spi->dev, indio_dev, + &iio_pollfunc_store_time, &ad7887_trigger_handler, &ad7887_ring_setup_ops); if (ret) - goto error_disable_reg; - - ret = iio_device_register(indio_dev); - if (ret) - goto error_unregister_ring; - - return 0; -error_unregister_ring: - iio_triggered_buffer_cleanup(indio_dev); -error_disable_reg: - if (st->reg) - regulator_disable(st->reg); - - return ret; -} - -static int ad7887_remove(struct spi_device *spi) -{ - struct iio_dev *indio_dev = spi_get_drvdata(spi); - struct ad7887_state *st = iio_priv(indio_dev); - - iio_device_unregister(indio_dev); - iio_triggered_buffer_cleanup(indio_dev); - if (st->reg) - regulator_disable(st->reg); + return ret; - return 0; + return devm_iio_device_register(&spi->dev, indio_dev); } static const struct spi_device_id ad7887_id[] = { @@ -359,7 +347,6 @@ static struct spi_driver ad7887_driver = { .name = "ad7887", }, .probe = ad7887_probe, - .remove = ad7887_remove, .id_table = ad7887_id, }; module_spi_driver(ad7887_driver); -- cgit v1.2.3 From 5e6dc43e2caa145627d2de2b5a7c65545f3fb639 Mon Sep 17 00:00:00 2001 From: Alexandru Ardelean Date: Tue, 29 Sep 2020 15:59:41 +0300 Subject: iio: buffer: dmaengine: unwrap the use of iio_buffer_set_attrs() The iio_buffer_set_attrs() helper will be removed in this series. So, just assign the attributes of the DMAEngine buffer logic directly. This is IIO buffer core context, so there is direct access to the buffer->attrs object. Signed-off-by: Alexandru Ardelean Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20200929125949.69934-2-alexandru.ardelean@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/buffer/industrialio-buffer-dmaengine.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers/iio') diff --git a/drivers/iio/buffer/industrialio-buffer-dmaengine.c b/drivers/iio/buffer/industrialio-buffer-dmaengine.c index 93b4e9e6bb55..b0cb9a35f5cd 100644 --- a/drivers/iio/buffer/industrialio-buffer-dmaengine.c +++ b/drivers/iio/buffer/industrialio-buffer-dmaengine.c @@ -200,9 +200,8 @@ static struct iio_buffer *iio_dmaengine_buffer_alloc(struct device *dev, iio_dma_buffer_init(&dmaengine_buffer->queue, chan->device->dev, &iio_dmaengine_default_ops); - iio_buffer_set_attrs(&dmaengine_buffer->queue.buffer, - iio_dmaengine_buffer_attrs); + dmaengine_buffer->queue.buffer.attrs = iio_dmaengine_buffer_attrs; dmaengine_buffer->queue.buffer.access = &iio_dmaengine_buffer_ops; return &dmaengine_buffer->queue.buffer; -- cgit v1.2.3 From 789976accb6a7b93226fcf8441ffc95edff3d371 Mon Sep 17 00:00:00 2001 From: Alexandru Ardelean Date: Tue, 29 Sep 2020 15:59:42 +0300 Subject: iio: adc: at91-sama5d2_adc: merge buffer & trigger init into a function This change is mostly cosmetic, but it's also a pre-cursor to the the change for 'iio_buffer_set_attrs()', where the helper gets updated to better support multiple IIO buffers for 1 IIO device. The only functional change is that the error message for the trigger alloc failure is bound to the parent device vs the IIO device object. Also, the new at91_adc_buffer_and_trigger_init() function was moved after the definition of the 'at91_adc_fifo_attributes'. Signed-off-by: Alexandru Ardelean Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20200929125949.69934-3-alexandru.ardelean@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/at91-sama5d2_adc.c | 78 ++++++++++++++++++-------------------- 1 file changed, 36 insertions(+), 42 deletions(-) (limited to 'drivers/iio') diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c index 56cb9a8521be..04767cd0ce8b 100644 --- a/drivers/iio/adc/at91-sama5d2_adc.c +++ b/drivers/iio/adc/at91-sama5d2_adc.c @@ -1013,21 +1013,6 @@ static struct iio_trigger *at91_adc_allocate_trigger(struct iio_dev *indio, return trig; } - -static int at91_adc_trigger_init(struct iio_dev *indio) -{ - struct at91_adc_state *st = iio_priv(indio); - - st->trig = at91_adc_allocate_trigger(indio, st->selected_trig->name); - if (IS_ERR(st->trig)) { - dev_err(&indio->dev, - "could not allocate trigger\n"); - return PTR_ERR(st->trig); - } - - return 0; -} - static void at91_adc_trigger_handler_nodma(struct iio_dev *indio_dev, struct iio_poll_func *pf) { @@ -1155,13 +1140,6 @@ static irqreturn_t at91_adc_trigger_handler(int irq, void *p) return IRQ_HANDLED; } -static int at91_adc_buffer_init(struct iio_dev *indio) -{ - return devm_iio_triggered_buffer_setup(&indio->dev, indio, - &iio_pollfunc_store_time, - &at91_adc_trigger_handler, &at91_buffer_setup_ops); -} - static unsigned at91_adc_startup_time(unsigned startup_time_min, unsigned adc_clk_khz) { @@ -1691,6 +1669,40 @@ static const struct iio_info at91_adc_info = { .hwfifo_set_watermark = &at91_adc_set_watermark, }; +static int at91_adc_buffer_and_trigger_init(struct device *dev, + struct iio_dev *indio) +{ + struct at91_adc_state *st = iio_priv(indio); + int ret; + + ret = devm_iio_triggered_buffer_setup(&indio->dev, indio, + &iio_pollfunc_store_time, + &at91_adc_trigger_handler, &at91_buffer_setup_ops); + if (ret < 0) { + dev_err(dev, "couldn't initialize the buffer.\n"); + return ret; + } + + if (!st->selected_trig->hw_trig) + return 0; + + iio_buffer_set_attrs(indio->buffer, at91_adc_fifo_attributes); + + st->trig = at91_adc_allocate_trigger(indio, st->selected_trig->name); + if (IS_ERR(st->trig)) { + dev_err(dev, "could not allocate trigger\n"); + return PTR_ERR(st->trig); + } + + /* + * Initially the iio buffer has a length of 2 and + * a watermark of 1 + */ + st->dma_st.watermark = 1; + + return 0; +} + static int at91_adc_probe(struct platform_device *pdev) { struct iio_dev *indio_dev; @@ -1826,27 +1838,9 @@ static int at91_adc_probe(struct platform_device *pdev) platform_set_drvdata(pdev, indio_dev); - ret = at91_adc_buffer_init(indio_dev); - if (ret < 0) { - dev_err(&pdev->dev, "couldn't initialize the buffer.\n"); + ret = at91_adc_buffer_and_trigger_init(&pdev->dev, indio_dev); + if (ret < 0) goto per_clk_disable_unprepare; - } - - if (st->selected_trig->hw_trig) { - ret = at91_adc_trigger_init(indio_dev); - if (ret < 0) { - dev_err(&pdev->dev, "couldn't setup the triggers.\n"); - goto per_clk_disable_unprepare; - } - /* - * Initially the iio buffer has a length of 2 and - * a watermark of 1 - */ - st->dma_st.watermark = 1; - - iio_buffer_set_attrs(indio_dev->buffer, - at91_adc_fifo_attributes); - } if (dma_coerce_mask_and_coherent(&indio_dev->dev, DMA_BIT_MASK(32))) dev_info(&pdev->dev, "cannot set DMA mask to 32-bit\n"); -- cgit v1.2.3 From 5164c788985702ad94fa4ce6adca29bf280876df Mon Sep 17 00:00:00 2001 From: Alexandru Ardelean Date: Tue, 29 Sep 2020 15:59:43 +0300 Subject: iio: triggered-buffer: add {devm_}iio_triggered_buffer_setup_ext variants This change adds a parameter to the {devm_}iio_triggered_buffer_setup() functions to assign the extra sysfs buffer attributes that are typically assigned via iio_buffer_set_attrs(). The functions also get renamed to iio_triggered_buffer_setup_ext() & devm_iio_triggered_buffer_setup_ext(). For backwards compatibility the old {devm_}iio_triggered_buffer_setup() functions are now macros wrap the new (renamed) functions with NULL for the buffer attrs. The aim is to remove iio_buffer_set_attrs(), so in the iio_triggered_buffer_setup_ext() function the attributes are assigned directly to 'buffer->attrs'. When adding multiple IIO buffers per IIO device, it can be pretty cumbersome to first allocate a set of buffers, then to dig them out of IIO to assign extra attributes (with iio_buffer_set_attrs()). Naturally, the best way would be to provide them at allocation time, which is what this change does. At this moment, buffers allocated with {devm_}iio_triggered_buffer_setup() are the only ones in mainline IIO to call iio_buffer_set_attrs(). Signed-off-by: Alexandru Ardelean Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20200929125949.69934-4-alexandru.ardelean@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/buffer/industrialio-triggered-buffer.c | 31 +++++++++++++--------- include/linux/iio/triggered_buffer.h | 23 +++++++++++----- 2 files changed, 35 insertions(+), 19 deletions(-) (limited to 'drivers/iio') diff --git a/drivers/iio/buffer/industrialio-triggered-buffer.c b/drivers/iio/buffer/industrialio-triggered-buffer.c index 6c20a83f887e..92b8aea3e063 100644 --- a/drivers/iio/buffer/industrialio-triggered-buffer.c +++ b/drivers/iio/buffer/industrialio-triggered-buffer.c @@ -9,18 +9,20 @@ #include #include #include +#include #include #include #include /** - * iio_triggered_buffer_setup() - Setup triggered buffer and pollfunc + * iio_triggered_buffer_setup_ext() - Setup triggered buffer and pollfunc * @indio_dev: IIO device structure * @h: Function which will be used as pollfunc top half * @thread: Function which will be used as pollfunc bottom half * @setup_ops: Buffer setup functions to use for this device. * If NULL the default setup functions for triggered * buffers will be used. + * @buffer_attrs: Extra sysfs buffer attributes for this IIO buffer * * This function combines some common tasks which will normally be performed * when setting up a triggered buffer. It will allocate the buffer and the @@ -33,10 +35,11 @@ * To free the resources allocated by this function call * iio_triggered_buffer_cleanup(). */ -int iio_triggered_buffer_setup(struct iio_dev *indio_dev, +int iio_triggered_buffer_setup_ext(struct iio_dev *indio_dev, irqreturn_t (*h)(int irq, void *p), irqreturn_t (*thread)(int irq, void *p), - const struct iio_buffer_setup_ops *setup_ops) + const struct iio_buffer_setup_ops *setup_ops, + const struct attribute **buffer_attrs) { struct iio_buffer *buffer; int ret; @@ -67,6 +70,8 @@ int iio_triggered_buffer_setup(struct iio_dev *indio_dev, /* Flag that polled ring buffering is possible */ indio_dev->modes |= INDIO_BUFFER_TRIGGERED; + buffer->attrs = buffer_attrs; + return 0; error_kfifo_free: @@ -74,10 +79,10 @@ error_kfifo_free: error_ret: return ret; } -EXPORT_SYMBOL(iio_triggered_buffer_setup); +EXPORT_SYMBOL(iio_triggered_buffer_setup_ext); /** - * iio_triggered_buffer_cleanup() - Free resources allocated by iio_triggered_buffer_setup() + * iio_triggered_buffer_cleanup() - Free resources allocated by iio_triggered_buffer_setup_ext() * @indio_dev: IIO device structure */ void iio_triggered_buffer_cleanup(struct iio_dev *indio_dev) @@ -92,11 +97,12 @@ static void devm_iio_triggered_buffer_clean(struct device *dev, void *res) iio_triggered_buffer_cleanup(*(struct iio_dev **)res); } -int devm_iio_triggered_buffer_setup(struct device *dev, - struct iio_dev *indio_dev, - irqreturn_t (*h)(int irq, void *p), - irqreturn_t (*thread)(int irq, void *p), - const struct iio_buffer_setup_ops *ops) +int devm_iio_triggered_buffer_setup_ext(struct device *dev, + struct iio_dev *indio_dev, + irqreturn_t (*h)(int irq, void *p), + irqreturn_t (*thread)(int irq, void *p), + const struct iio_buffer_setup_ops *ops, + const struct attribute **buffer_attrs) { struct iio_dev **ptr; int ret; @@ -108,7 +114,8 @@ int devm_iio_triggered_buffer_setup(struct device *dev, *ptr = indio_dev; - ret = iio_triggered_buffer_setup(indio_dev, h, thread, ops); + ret = iio_triggered_buffer_setup_ext(indio_dev, h, thread, ops, + buffer_attrs); if (!ret) devres_add(dev, ptr); else @@ -116,7 +123,7 @@ int devm_iio_triggered_buffer_setup(struct device *dev, return ret; } -EXPORT_SYMBOL_GPL(devm_iio_triggered_buffer_setup); +EXPORT_SYMBOL_GPL(devm_iio_triggered_buffer_setup_ext); MODULE_AUTHOR("Lars-Peter Clausen "); MODULE_DESCRIPTION("IIO helper functions for setting up triggered buffers"); diff --git a/include/linux/iio/triggered_buffer.h b/include/linux/iio/triggered_buffer.h index e99c91799359..7f154d1f8739 100644 --- a/include/linux/iio/triggered_buffer.h +++ b/include/linux/iio/triggered_buffer.h @@ -4,19 +4,28 @@ #include +struct attribute; struct iio_dev; struct iio_buffer_setup_ops; -int iio_triggered_buffer_setup(struct iio_dev *indio_dev, +int iio_triggered_buffer_setup_ext(struct iio_dev *indio_dev, irqreturn_t (*h)(int irq, void *p), irqreturn_t (*thread)(int irq, void *p), - const struct iio_buffer_setup_ops *setup_ops); + const struct iio_buffer_setup_ops *setup_ops, + const struct attribute **buffer_attrs); void iio_triggered_buffer_cleanup(struct iio_dev *indio_dev); -int devm_iio_triggered_buffer_setup(struct device *dev, - struct iio_dev *indio_dev, - irqreturn_t (*h)(int irq, void *p), - irqreturn_t (*thread)(int irq, void *p), - const struct iio_buffer_setup_ops *ops); +#define iio_triggered_buffer_setup(indio_dev, h, thread, setup_ops) \ + iio_triggered_buffer_setup_ext((indio_dev), (h), (thread), (setup_ops), NULL) + +int devm_iio_triggered_buffer_setup_ext(struct device *dev, + struct iio_dev *indio_dev, + irqreturn_t (*h)(int irq, void *p), + irqreturn_t (*thread)(int irq, void *p), + const struct iio_buffer_setup_ops *ops, + const struct attribute **buffer_attrs); + +#define devm_iio_triggered_buffer_setup(dev, indio_dev, h, thread, setup_ops) \ + devm_iio_triggered_buffer_setup_ext((dev), (indio_dev), (h), (thread), (setup_ops), NULL) #endif -- cgit v1.2.3 From abef6bc928718520f984b536cb48bc03e5d0fdc9 Mon Sep 17 00:00:00 2001 From: Alexandru Ardelean Date: Tue, 29 Sep 2020 15:59:44 +0300 Subject: iio: accel: adxl372: use devm_iio_triggered_buffer_setup_ext() This change switches to the new devm_iio_triggered_buffer_setup_ext() function and removes the iio_buffer_set_attrs() call, for assigning the HW FIFO attributes to the buffer. Signed-off-by: Alexandru Ardelean Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20200929125949.69934-5-alexandru.ardelean@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/accel/adxl372.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) (limited to 'drivers/iio') diff --git a/drivers/iio/accel/adxl372.c b/drivers/iio/accel/adxl372.c index aed2a4930fb0..8ba1453b8dbf 100644 --- a/drivers/iio/accel/adxl372.c +++ b/drivers/iio/accel/adxl372.c @@ -1211,15 +1211,14 @@ int adxl372_probe(struct device *dev, struct regmap *regmap, return ret; } - ret = devm_iio_triggered_buffer_setup(dev, - indio_dev, NULL, - adxl372_trigger_handler, - &adxl372_buffer_ops); + ret = devm_iio_triggered_buffer_setup_ext(dev, + indio_dev, NULL, + adxl372_trigger_handler, + &adxl372_buffer_ops, + adxl372_fifo_attributes); if (ret < 0) return ret; - iio_buffer_set_attrs(indio_dev->buffer, adxl372_fifo_attributes); - if (st->irq) { st->dready_trig = devm_iio_trigger_alloc(dev, "%s-dev%d", -- cgit v1.2.3 From 1864c829c91e8c65b0eba2f822ee66f227e29bcb Mon Sep 17 00:00:00 2001 From: Alexandru Ardelean Date: Tue, 29 Sep 2020 15:59:45 +0300 Subject: iio: accel: bmc150: use iio_triggered_buffer_setup_ext() This change switches to the new iio_triggered_buffer_setup_ext() function and removes the iio_buffer_set_attrs() call, for assigning the HW FIFO attributes to the buffer. Signed-off-by: Alexandru Ardelean Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20200929125949.69934-6-alexandru.ardelean@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/accel/bmc150-accel-core.c | 25 ++++++++++++++----------- 1 file changed, 14 insertions(+), 11 deletions(-) (limited to 'drivers/iio') diff --git a/drivers/iio/accel/bmc150-accel-core.c b/drivers/iio/accel/bmc150-accel-core.c index 48435865fdaf..c641ee552038 100644 --- a/drivers/iio/accel/bmc150-accel-core.c +++ b/drivers/iio/accel/bmc150-accel-core.c @@ -1558,6 +1558,7 @@ static int bmc150_accel_chip_init(struct bmc150_accel_data *data) int bmc150_accel_core_probe(struct device *dev, struct regmap *regmap, int irq, const char *name, bool block_supported) { + const struct attribute **fifo_attrs; struct bmc150_accel_data *data; struct iio_dev *indio_dev; int ret; @@ -1590,10 +1591,19 @@ int bmc150_accel_core_probe(struct device *dev, struct regmap *regmap, int irq, indio_dev->modes = INDIO_DIRECT_MODE; indio_dev->info = &bmc150_accel_info; - ret = iio_triggered_buffer_setup(indio_dev, - &iio_pollfunc_store_time, - bmc150_accel_trigger_handler, - &bmc150_accel_buffer_ops); + if (block_supported) { + indio_dev->modes |= INDIO_BUFFER_SOFTWARE; + indio_dev->info = &bmc150_accel_info_fifo; + fifo_attrs = bmc150_accel_fifo_attributes; + } else { + fifo_attrs = NULL; + } + + ret = iio_triggered_buffer_setup_ext(indio_dev, + &iio_pollfunc_store_time, + bmc150_accel_trigger_handler, + &bmc150_accel_buffer_ops, + fifo_attrs); if (ret < 0) { dev_err(dev, "Failed: iio triggered buffer setup\n"); return ret; @@ -1628,13 +1638,6 @@ int bmc150_accel_core_probe(struct device *dev, struct regmap *regmap, int irq, ret = bmc150_accel_triggers_setup(indio_dev, data); if (ret) goto err_buffer_cleanup; - - if (block_supported) { - indio_dev->modes |= INDIO_BUFFER_SOFTWARE; - indio_dev->info = &bmc150_accel_info_fifo; - iio_buffer_set_attrs(indio_dev->buffer, - bmc150_accel_fifo_attributes); - } } ret = pm_runtime_set_active(dev); -- cgit v1.2.3 From a2f283555b86c3f43651af2875ddbcb17c78091f Mon Sep 17 00:00:00 2001 From: Alexandru Ardelean Date: Tue, 29 Sep 2020 15:59:46 +0300 Subject: iio: adc: at91-sama5d2_adc: use devm_iio_triggered_buffer_setup_ext() This change switches to the new devm_iio_triggered_buffer_setup_ext() function and removes the iio_buffer_set_attrs() call, for assigning the HW FIFO attributes to the buffer. Signed-off-by: Alexandru Ardelean Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20200929125949.69934-7-alexandru.ardelean@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/at91-sama5d2_adc.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) (limited to 'drivers/iio') diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c index 04767cd0ce8b..6edcc99009d1 100644 --- a/drivers/iio/adc/at91-sama5d2_adc.c +++ b/drivers/iio/adc/at91-sama5d2_adc.c @@ -1673,11 +1673,17 @@ static int at91_adc_buffer_and_trigger_init(struct device *dev, struct iio_dev *indio) { struct at91_adc_state *st = iio_priv(indio); + const struct attribute **fifo_attrs; int ret; - ret = devm_iio_triggered_buffer_setup(&indio->dev, indio, + if (st->selected_trig->hw_trig) + fifo_attrs = at91_adc_fifo_attributes; + else + fifo_attrs = NULL; + + ret = devm_iio_triggered_buffer_setup_ext(&indio->dev, indio, &iio_pollfunc_store_time, - &at91_adc_trigger_handler, &at91_buffer_setup_ops); + &at91_adc_trigger_handler, &at91_buffer_setup_ops, fifo_attrs); if (ret < 0) { dev_err(dev, "couldn't initialize the buffer.\n"); return ret; @@ -1686,8 +1692,6 @@ static int at91_adc_buffer_and_trigger_init(struct device *dev, if (!st->selected_trig->hw_trig) return 0; - iio_buffer_set_attrs(indio->buffer, at91_adc_fifo_attributes); - st->trig = at91_adc_allocate_trigger(indio, st->selected_trig->name); if (IS_ERR(st->trig)) { dev_err(dev, "could not allocate trigger\n"); -- cgit v1.2.3 From 165aea80e2e2c77775bf36d944e5aeea4f4e892d Mon Sep 17 00:00:00 2001 From: Alexandru Ardelean Date: Tue, 29 Sep 2020 15:59:47 +0300 Subject: iio: cros_ec: use devm_iio_triggered_buffer_setup_ext() This change switches to the new devm_iio_triggered_buffer_setup_ext() function and removes the iio_buffer_set_attrs() call, for assigning the HW FIFO attributes to the buffer. Signed-off-by: Alexandru Ardelean Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20200929125949.69934-8-alexandru.ardelean@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) (limited to 'drivers/iio') diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c index c62cacc04672..1eafcf04ad69 100644 --- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c +++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c @@ -353,19 +353,22 @@ int cros_ec_sensors_core_init(struct platform_device *pdev, if (ret) return ret; } else { + const struct attribute **fifo_attrs; + + if (has_hw_fifo) + fifo_attrs = cros_ec_sensor_fifo_attributes; + else + fifo_attrs = NULL; + /* * The only way to get samples in buffer is to set a * software trigger (systrig, hrtimer). */ - ret = devm_iio_triggered_buffer_setup( + ret = devm_iio_triggered_buffer_setup_ext( dev, indio_dev, NULL, trigger_capture, - NULL); + NULL, fifo_attrs); if (ret) return ret; - - if (has_hw_fifo) - iio_buffer_set_attrs(indio_dev->buffer, - cros_ec_sensor_fifo_attributes); } } -- cgit v1.2.3 From fc02a7315b1e48289d31ba02996b468d5ffa2b57 Mon Sep 17 00:00:00 2001 From: Alexandru Ardelean Date: Tue, 29 Sep 2020 15:59:48 +0300 Subject: iio: hid-sensors: use iio_triggered_buffer_setup_ext() This change switches to the new iio_triggered_buffer_setup_ext() function and removes the iio_buffer_set_attrs() call, for assigning the HW FIFO attributes to the buffer. Signed-off-by: Alexandru Ardelean Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20200929125949.69934-9-alexandru.ardelean@analog.com Signed-off-by: Jonathan Cameron --- .../iio/common/hid-sensors/hid-sensor-trigger.c | 22 +++++++++------------- 1 file changed, 9 insertions(+), 13 deletions(-) (limited to 'drivers/iio') diff --git a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c index ff375790b7e8..064c32bec9c7 100644 --- a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c +++ b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c @@ -84,15 +84,6 @@ static const struct attribute *hid_sensor_fifo_attributes[] = { NULL, }; -static void hid_sensor_setup_batch_mode(struct iio_dev *indio_dev, - struct hid_sensor_common *st) -{ - if (!hid_sensor_batch_mode_supported(st)) - return; - - iio_buffer_set_attrs(indio_dev->buffer, hid_sensor_fifo_attributes); -} - static int _hid_sensor_power_state(struct hid_sensor_common *st, bool state) { int state_val; @@ -247,11 +238,18 @@ static const struct iio_trigger_ops hid_sensor_trigger_ops = { int hid_sensor_setup_trigger(struct iio_dev *indio_dev, const char *name, struct hid_sensor_common *attrb) { + const struct attribute **fifo_attrs; int ret; struct iio_trigger *trig; - ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time, - NULL, NULL); + if (hid_sensor_batch_mode_supported(attrb)) + fifo_attrs = hid_sensor_fifo_attributes; + else + fifo_attrs = NULL; + + ret = iio_triggered_buffer_setup_ext(indio_dev, + &iio_pollfunc_store_time, + NULL, NULL, fifo_attrs); if (ret) { dev_err(&indio_dev->dev, "Triggered Buffer Setup Failed\n"); return ret; @@ -276,8 +274,6 @@ int hid_sensor_setup_trigger(struct iio_dev *indio_dev, const char *name, attrb->trigger = trig; indio_dev->trig = iio_trigger_get(trig); - hid_sensor_setup_batch_mode(indio_dev, attrb); - ret = pm_runtime_set_active(&indio_dev->dev); if (ret) goto error_unreg_trigger; -- cgit v1.2.3 From 21232b4456ba5e1eea7385bd3c4b1994994fd409 Mon Sep 17 00:00:00 2001 From: Alexandru Ardelean Date: Tue, 29 Sep 2020 15:59:49 +0300 Subject: iio: buffer: remove iio_buffer_set_attrs() helper The iio_buffer_set_attrs() is no longer used in the drivers, so it can be removed now. Signed-off-by: Alexandru Ardelean Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20200929125949.69934-10-alexandru.ardelean@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/industrialio-buffer.c | 12 ------------ include/linux/iio/buffer.h | 3 --- 2 files changed, 15 deletions(-) (limited to 'drivers/iio') diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c index a4f6bb96d4f4..9663dec3dcf3 100644 --- a/drivers/iio/industrialio-buffer.c +++ b/drivers/iio/industrialio-buffer.c @@ -210,18 +210,6 @@ void iio_buffer_init(struct iio_buffer *buffer) } EXPORT_SYMBOL(iio_buffer_init); -/** - * iio_buffer_set_attrs - Set buffer specific attributes - * @buffer: The buffer for which we are setting attributes - * @attrs: Pointer to a null terminated list of pointers to attributes - */ -void iio_buffer_set_attrs(struct iio_buffer *buffer, - const struct attribute **attrs) -{ - buffer->attrs = attrs; -} -EXPORT_SYMBOL_GPL(iio_buffer_set_attrs); - static ssize_t iio_show_scan_index(struct device *dev, struct device_attribute *attr, char *buf) diff --git a/include/linux/iio/buffer.h b/include/linux/iio/buffer.h index fbba4093f06c..8febc23f5f26 100644 --- a/include/linux/iio/buffer.h +++ b/include/linux/iio/buffer.h @@ -11,9 +11,6 @@ struct iio_buffer; -void iio_buffer_set_attrs(struct iio_buffer *buffer, - const struct attribute **attrs); - int iio_push_to_buffers(struct iio_dev *indio_dev, const void *data); /** -- cgit v1.2.3 From 39996252f6af8f887516bb5f80223df26cb8c904 Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Fri, 20 Nov 2020 12:36:26 -0600 Subject: iio: adc: cpcap: Fix fall-through warnings for Clang In preparation to enable -Wimplicit-fallthrough for Clang, fix a warning by explicitly adding a break statement instead of letting the code fall through to the next case. Signed-off-by: Gustavo A. R. Silva Link: https://github.com/KSPP/linux/issues/115 Link: https://lore.kernel.org/r/b3c1c3f9c76f2f0e832f956587f227e44af57d3d.1605896060.git.gustavoars@kernel.org Signed-off-by: Jonathan Cameron --- drivers/iio/adc/cpcap-adc.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/iio') diff --git a/drivers/iio/adc/cpcap-adc.c b/drivers/iio/adc/cpcap-adc.c index 64c3cc382311..f19c9aa93f17 100644 --- a/drivers/iio/adc/cpcap-adc.c +++ b/drivers/iio/adc/cpcap-adc.c @@ -557,6 +557,7 @@ static void cpcap_adc_setup_bank(struct cpcap_adc *ddata, break; case CPCAP_ADC_BATTP_PI16 ... CPCAP_ADC_BATTI_PI17: value1 |= CPCAP_BIT_RAND1; + break; default: break; } -- cgit v1.2.3 From 24da9627e674305187a9908b328ffabcca65e2b5 Mon Sep 17 00:00:00 2001 From: Alexandru Ardelean Date: Thu, 19 Nov 2020 16:27:20 +0200 Subject: iio: adc: ad7292: remove unneeded spi_set_drvdata() This seems to have been copied from a driver that calls spi_set_drvdata() but doesn't call spi_get_drvdata(). Setting a private object on the SPI device's object isn't necessary if it won't be accessed. This change removes the spi_set_drvdata() call. Signed-off-by: Alexandru Ardelean Tested-by: Marcelo Schmitt Reviewed-by: Marcelo Schmitt Link: https://lore.kernel.org/r/20201119142720.86326-1-alexandru.ardelean@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ad7292.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'drivers/iio') diff --git a/drivers/iio/adc/ad7292.c b/drivers/iio/adc/ad7292.c index ab204e9199e9..70e33dd1c9f7 100644 --- a/drivers/iio/adc/ad7292.c +++ b/drivers/iio/adc/ad7292.c @@ -276,8 +276,6 @@ static int ad7292_probe(struct spi_device *spi) return -EINVAL; } - spi_set_drvdata(spi, indio_dev); - st->reg = devm_regulator_get_optional(&spi->dev, "vref"); if (!IS_ERR(st->reg)) { ret = regulator_enable(st->reg); -- cgit v1.2.3 From 9ff2497337088925d1a486479dfd3f80273dc9a1 Mon Sep 17 00:00:00 2001 From: Alexandru Ardelean Date: Thu, 19 Nov 2020 16:17:29 +0200 Subject: iio: accel: adis16201: remove unneeded spi_set_drvdata() There is no matching spi_get_drvdata() in the driver. This looks like a left-over from before the driver was converted to device-managed functions. Signed-off-by: Alexandru Ardelean Link: https://lore.kernel.org/r/20201119141729.84185-1-alexandru.ardelean@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/accel/adis16201.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers/iio') diff --git a/drivers/iio/accel/adis16201.c b/drivers/iio/accel/adis16201.c index f955cccb3e77..3633a4e302c6 100644 --- a/drivers/iio/accel/adis16201.c +++ b/drivers/iio/accel/adis16201.c @@ -268,7 +268,6 @@ static int adis16201_probe(struct spi_device *spi) return -ENOMEM; st = iio_priv(indio_dev); - spi_set_drvdata(spi, indio_dev); indio_dev->name = spi->dev.driver->name; indio_dev->info = &adis16201_info; -- cgit v1.2.3 From d59377023d4a30e0bb0eac38c813224ce8bc61ec Mon Sep 17 00:00:00 2001 From: Alexandru Ardelean Date: Thu, 19 Nov 2020 16:18:06 +0200 Subject: iio: accel: adis16209: remove unneeded spi_set_drvdata() There is no matching spi_get_drvdata() in the driver. This looks like a left-over from before the driver was converted to device-managed functions. Signed-off-by: Alexandru Ardelean Link: https://lore.kernel.org/r/20201119141806.84827-1-alexandru.ardelean@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/accel/adis16209.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers/iio') diff --git a/drivers/iio/accel/adis16209.c b/drivers/iio/accel/adis16209.c index 4a841aec6268..6c2d4a967de7 100644 --- a/drivers/iio/accel/adis16209.c +++ b/drivers/iio/accel/adis16209.c @@ -279,7 +279,6 @@ static int adis16209_probe(struct spi_device *spi) return -ENOMEM; st = iio_priv(indio_dev); - spi_set_drvdata(spi, indio_dev); indio_dev->name = spi->dev.driver->name; indio_dev->info = &adis16209_info; -- cgit v1.2.3 From ee8caea0c1449271d6f03145d367423dc5d8749c Mon Sep 17 00:00:00 2001 From: Alexandru Ardelean Date: Tue, 17 Nov 2020 12:37:53 +0200 Subject: iio: core: organize buffer file-ops in the order defined in the struct The change is mostly cosmetic. This organizes the order of assignment of the members of 'iio_buffer_fileops' to be similar to the one as defined in the 'struct file_operations' type. Signed-off-by: Alexandru Ardelean Link: https://lore.kernel.org/r/20201117103753.8450-1-alexandru.ardelean@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/industrialio-core.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers/iio') diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c index e53c771d66eb..89f9af12c8e6 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -1750,14 +1750,14 @@ out_unlock: } static const struct file_operations iio_buffer_fileops = { - .read = iio_buffer_read_outer_addr, - .release = iio_chrdev_release, - .open = iio_chrdev_open, - .poll = iio_buffer_poll_addr, .owner = THIS_MODULE, .llseek = noop_llseek, + .read = iio_buffer_read_outer_addr, + .poll = iio_buffer_poll_addr, .unlocked_ioctl = iio_ioctl, .compat_ioctl = compat_ptr_ioctl, + .open = iio_chrdev_open, + .release = iio_chrdev_release, }; static int iio_check_unique_scan_index(struct iio_dev *indio_dev) -- cgit v1.2.3 From 74d826da3842ce893e943f9f23ddb7f07fc8d7fe Mon Sep 17 00:00:00 2001 From: Alexandru Ardelean Date: Tue, 17 Nov 2020 11:51:54 +0200 Subject: iio: core: return -EINVAL when no ioctl handler has been run It seems that when this was tested the happy case was more tested. A few of the userspace apps rely on this returning negative error codes in case an ioctl() is not available. When running multiple ioctl() handlers or when calling an ioctl() that doesn't exist, IIO_IOCTL_UNHANDLED is returned. In that case -EINVAL should be returned. Fixes: 8dedcc3eee3a ("iio: core: centralize ioctl() calls to the main chardev") Signed-off-by: Alexandru Ardelean Link: https://lore.kernel.org/r/20201117095154.7189-1-alexandru.ardelean@analog.com Signed-off-by: Jonathan Cameron --- drivers/iio/industrialio-core.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/iio') diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c index 89f9af12c8e6..7cae46f9bc0d 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -1743,6 +1743,9 @@ static long iio_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) break; } + if (ret == IIO_IOCTL_UNHANDLED) + ret = -EINVAL; + out_unlock: mutex_unlock(&indio_dev->info_exist_lock); -- cgit v1.2.3