From b2e63555592f81331c8da3afaa607d8cf83e8138 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Sun, 10 Sep 2017 01:30:46 +0200 Subject: i2c: gpio: Convert to use descriptors MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This converts the GPIO-based I2C-driver to using GPIO descriptors instead of the old global numberspace-based GPIO interface. We: - Convert the driver to unconditionally grab two GPIOs from the device by index 0 (SDA) and 1 (SCL) which will work fine with device tree and descriptor tables. The existing device trees will continue to work just like before, but without any roundtrip through the global numberspace. - Brutally convert all boardfiles still passing global GPIOs by registering descriptor tables associated with the devices instead so this driver does not need to keep supporting passing any GPIO numbers as platform data. There is no stepwise approach as elegant as this, I strongly prefer this big hammer over any antsteps for this conversion. This way the old GPIO numbers go away and NEVER COME BACK. Special conversion for the different boards utilizing I2C-GPIO: - EP93xx (arch/arm/mach-ep93xx): pretty straight forward as all boards were using the same two GPIO lines, just define these two in a lookup table for "i2c-gpio" and register these along with the device. None of them define any other platform data so just pass NULL as platform data. This platform selects GPIOLIB so all should be smooth. The pins appear on a gpiochip for bank "G" as pins 1 (SDA) and 0 (SCL). - IXP4 (arch/arm/mach-ixp4): descriptor tables have to be registered for each board separately. They all use "IXP4XX_GPIO_CHIP" so it is pretty straight forward. Most board define no other platform data than SCL/SDA so they can drop the #include of and assign NULL to platform data. The "goramo_mlr" (Goramo Multilink Router) board is a bit worrisome: it implements its own I2C bit-banging in the board file, and optionally registers an I2C serial port, but claims the same GPIO lines for itself in the board file. This is not going to work: there will be competition for the GPIO lines, so delete the optional extra I2C bus instead, no I2C devices are registered on it anyway, there are just hints that it may contain an EEPROM that may be accessed from userspace. This needs to be fixed up properly by the serial clock using I2C emulation so drop a note in the code. - KS8695 board acs5k (arch/arm/mach-ks8695/board-acs5.c) has some platform data in addition to the pins so it needs to be kept around sans GPIO lines. Its GPIO chip is named "KS8695" and the arch selects GPIOLIB. - PXA boards (arch/arm/mach-pxa/*) use some of the platform data so it needs to be preserved here. The viper board even registers two GPIO I2Cs. The gpiochip is named "gpio-pxa" and the arch selects GPIOLIB. - SA1100 Simpad (arch/arm/mach-sa1100/simpad.c) defines a GPIO I2C bus, and the arch selects GPIOLIB. - Blackfin boards (arch/blackfin/bf533 etc) for these I assume their I2C GPIOs refer to the local gpiochip defined in arch/blackfin/kernel/bfin_gpio.c names "BFIN-GPIO". The arch selects GPIOLIB. The boards get spiked with IF_ENABLED(I2C_GPIO) but that is a side effect of it being like that already (I would just have Kconfig select I2C_GPIO and get rid of them all.) I also delete any platform data set to 0 as it will get that value anyway from static declartions of platform data. - The MIPS selects GPIOLIB and the Alchemy machine is using two local GPIO chips, one of them has a GPIO I2C. We need to adjust the local offset from the global number space here. The ATH79 has a proper GPIO driver in drivers/gpio/gpio-ath79.c and AFAICT the chip is named "ath79-gpio" and the PB44 PCF857x expander spawns from this on GPIO 1 and 0. The latter board only use the platform data to specify pins so it can be cut altogether after this. - The MFD Silicon Motion SM501 is a special case. It dynamically spawns an I2C bus off the MFD using sm501_create_subdev(). We use an approach to dynamically create a machine descriptor table and attach this to the "SM501-LOW" or "SM501-HIGH" gpiochip. We use chip-local offsets to grab the right lines. We can get rid of two local static inline helpers as part of this refactoring. Cc: Steven Miao Cc: Ralf Baechle Cc: Guenter Roeck Cc: Ville Syrjälä Cc: Magnus Damm Cc: Ben Dooks Cc: Heiko Schocher Acked-by: Wu, Aaron Acked-by: Olof Johansson Acked-by: Lee Jones Acked-by: Ralf Baechle Tested-by: Geert Uytterhoeven Signed-off-by: Linus Walleij --- arch/arm/mach-ep93xx/core.c | 39 +++++++++++++++------------- arch/arm/mach-ep93xx/edb93xx.c | 15 ++--------- arch/arm/mach-ep93xx/include/mach/platform.h | 4 +-- arch/arm/mach-ep93xx/simone.c | 12 +-------- arch/arm/mach-ep93xx/snappercl15.c | 12 +-------- arch/arm/mach-ep93xx/vision_ep9307.c | 7 +---- arch/arm/mach-ixp4xx/avila-setup.c | 17 ++++++++---- arch/arm/mach-ixp4xx/dsmg600-setup.c | 16 ++++++++---- arch/arm/mach-ixp4xx/fsg-setup.c | 16 ++++++++---- arch/arm/mach-ixp4xx/goramo_mlr.c | 24 +++++------------ arch/arm/mach-ixp4xx/ixdp425-setup.c | 16 ++++++++---- arch/arm/mach-ixp4xx/nas100d-setup.c | 16 ++++++++---- arch/arm/mach-ixp4xx/nslu2-setup.c | 16 ++++++++---- arch/arm/mach-ks8695/board-acs5k.c | 13 +++++++--- arch/arm/mach-pxa/palmz72.c | 12 +++++++-- arch/arm/mach-pxa/viper.c | 27 ++++++++++++++++--- arch/arm/mach-sa1100/simpad.c | 12 +++++++-- arch/blackfin/mach-bf533/boards/blackstamp.c | 19 ++++++++++---- arch/blackfin/mach-bf533/boards/ezkit.c | 18 ++++++++++--- arch/blackfin/mach-bf533/boards/stamp.c | 18 ++++++++++--- arch/blackfin/mach-bf561/boards/ezkit.c | 18 ++++++++++--- arch/mips/alchemy/board-gpr.c | 19 ++++++++++++-- arch/mips/ath79/mach-pb44.c | 16 ++++++++---- 23 files changed, 237 insertions(+), 145 deletions(-) (limited to 'arch') diff --git a/arch/arm/mach-ep93xx/core.c b/arch/arm/mach-ep93xx/core.c index f53c61813998..7e99fe829ad1 100644 --- a/arch/arm/mach-ep93xx/core.c +++ b/arch/arm/mach-ep93xx/core.c @@ -31,7 +31,7 @@ #include #include #include -#include +#include #include #include #include @@ -320,42 +320,45 @@ void __init ep93xx_register_eth(struct ep93xx_eth_data *data, int copy_addr) /************************************************************************* * EP93xx i2c peripheral handling *************************************************************************/ -static struct i2c_gpio_platform_data ep93xx_i2c_data; + +/* All EP93xx devices use the same two GPIO pins for I2C bit-banging */ +static struct gpiod_lookup_table ep93xx_i2c_gpiod_table = { + .dev_id = "i2c-gpio", + .table = { + /* Use local offsets on gpiochip/port "G" */ + GPIO_LOOKUP_IDX("G", 1, NULL, 0, GPIO_ACTIVE_HIGH), + GPIO_LOOKUP_IDX("G", 0, NULL, 1, GPIO_ACTIVE_HIGH), + }, +}; static struct platform_device ep93xx_i2c_device = { .name = "i2c-gpio", .id = 0, .dev = { - .platform_data = &ep93xx_i2c_data, + .platform_data = NULL, }, }; /** * ep93xx_register_i2c - Register the i2c platform device. - * @data: platform specific i2c-gpio configuration (__initdata) * @devices: platform specific i2c bus device information (__initdata) * @num: the number of devices on the i2c bus */ -void __init ep93xx_register_i2c(struct i2c_gpio_platform_data *data, - struct i2c_board_info *devices, int num) +void __init ep93xx_register_i2c(struct i2c_board_info *devices, int num) { /* - * Set the EEPROM interface pin drive type control. - * Defines the driver type for the EECLK and EEDAT pins as either - * open drain, which will require an external pull-up, or a normal - * CMOS driver. + * FIXME: this just sets the two pins as non-opendrain, as no + * platforms tries to do that anyway. Flag the applicable lines + * as open drain in the GPIO_LOOKUP above and the driver or + * gpiolib will handle open drain/open drain emulation as need + * be. Right now i2c-gpio emulates open drain which is not + * optimal. */ - if (data->sda_is_open_drain && data->sda_pin != EP93XX_GPIO_LINE_EEDAT) - pr_warning("sda != EEDAT, open drain has no effect\n"); - if (data->scl_is_open_drain && data->scl_pin != EP93XX_GPIO_LINE_EECLK) - pr_warning("scl != EECLK, open drain has no effect\n"); - - __raw_writel((data->sda_is_open_drain << 1) | - (data->scl_is_open_drain << 0), + __raw_writel((0 << 1) | (0 << 0), EP93XX_GPIO_EEDRIVE); - ep93xx_i2c_data = *data; i2c_register_board_info(0, devices, num); + gpiod_add_lookup_table(&ep93xx_i2c_gpiod_table); platform_device_register(&ep93xx_i2c_device); } diff --git a/arch/arm/mach-ep93xx/edb93xx.c b/arch/arm/mach-ep93xx/edb93xx.c index 7a7f280b07d7..8e89ec8b6f0f 100644 --- a/arch/arm/mach-ep93xx/edb93xx.c +++ b/arch/arm/mach-ep93xx/edb93xx.c @@ -28,7 +28,6 @@ #include #include #include -#include #include #include @@ -61,14 +60,6 @@ static struct ep93xx_eth_data __initdata edb93xx_eth_data = { /************************************************************************* * EDB93xx i2c peripheral handling *************************************************************************/ -static struct i2c_gpio_platform_data __initdata edb93xx_i2c_gpio_data = { - .sda_pin = EP93XX_GPIO_LINE_EEDAT, - .sda_is_open_drain = 0, - .scl_pin = EP93XX_GPIO_LINE_EECLK, - .scl_is_open_drain = 0, - .udelay = 0, /* default to 100 kHz */ - .timeout = 0, /* default to 100 ms */ -}; static struct i2c_board_info __initdata edb93xxa_i2c_board_info[] = { { @@ -86,13 +77,11 @@ static void __init edb93xx_register_i2c(void) { if (machine_is_edb9302a() || machine_is_edb9307a() || machine_is_edb9315a()) { - ep93xx_register_i2c(&edb93xx_i2c_gpio_data, - edb93xxa_i2c_board_info, + ep93xx_register_i2c(edb93xxa_i2c_board_info, ARRAY_SIZE(edb93xxa_i2c_board_info)); } else if (machine_is_edb9302() || machine_is_edb9307() || machine_is_edb9312() || machine_is_edb9315()) { - ep93xx_register_i2c(&edb93xx_i2c_gpio_data, - edb93xx_i2c_board_info, + ep93xx_register_i2c(edb93xx_i2c_board_info, ARRAY_SIZE(edb93xx_i2c_board_info)); } } diff --git a/arch/arm/mach-ep93xx/include/mach/platform.h b/arch/arm/mach-ep93xx/include/mach/platform.h index db0839691ef5..a686fd6caee1 100644 --- a/arch/arm/mach-ep93xx/include/mach/platform.h +++ b/arch/arm/mach-ep93xx/include/mach/platform.h @@ -7,7 +7,6 @@ #include struct device; -struct i2c_gpio_platform_data; struct i2c_board_info; struct spi_board_info; struct platform_device; @@ -36,8 +35,7 @@ void ep93xx_register_flash(unsigned int width, resource_size_t start, resource_size_t size); void ep93xx_register_eth(struct ep93xx_eth_data *data, int copy_addr); -void ep93xx_register_i2c(struct i2c_gpio_platform_data *data, - struct i2c_board_info *devices, int num); +void ep93xx_register_i2c(struct i2c_board_info *devices, int num); void ep93xx_register_spi(struct ep93xx_spi_info *info, struct spi_board_info *devices, int num); void ep93xx_register_fb(struct ep93xxfb_mach_info *data); diff --git a/arch/arm/mach-ep93xx/simone.c b/arch/arm/mach-ep93xx/simone.c index c7a40f245892..e61f3dee24c2 100644 --- a/arch/arm/mach-ep93xx/simone.c +++ b/arch/arm/mach-ep93xx/simone.c @@ -19,7 +19,6 @@ #include #include #include -#include #include #include #include @@ -129,15 +128,6 @@ static struct ep93xx_spi_info simone_spi_info __initdata = { .use_dma = 1, }; -static struct i2c_gpio_platform_data __initdata simone_i2c_gpio_data = { - .sda_pin = EP93XX_GPIO_LINE_EEDAT, - .sda_is_open_drain = 0, - .scl_pin = EP93XX_GPIO_LINE_EECLK, - .scl_is_open_drain = 0, - .udelay = 0, - .timeout = 0, -}; - static struct i2c_board_info __initdata simone_i2c_board_info[] = { { I2C_BOARD_INFO("ds1337", 0x68), @@ -161,7 +151,7 @@ static void __init simone_init_machine(void) ep93xx_register_flash(2, EP93XX_CS6_PHYS_BASE, SZ_8M); ep93xx_register_eth(&simone_eth_data, 1); ep93xx_register_fb(&simone_fb_info); - ep93xx_register_i2c(&simone_i2c_gpio_data, simone_i2c_board_info, + ep93xx_register_i2c(simone_i2c_board_info, ARRAY_SIZE(simone_i2c_board_info)); ep93xx_register_spi(&simone_spi_info, simone_spi_devices, ARRAY_SIZE(simone_spi_devices)); diff --git a/arch/arm/mach-ep93xx/snappercl15.c b/arch/arm/mach-ep93xx/snappercl15.c index 8b29398f4dc7..45940c1d7787 100644 --- a/arch/arm/mach-ep93xx/snappercl15.c +++ b/arch/arm/mach-ep93xx/snappercl15.c @@ -21,7 +21,6 @@ #include #include #include -#include #include #include @@ -127,15 +126,6 @@ static struct ep93xx_eth_data __initdata snappercl15_eth_data = { .phy_id = 1, }; -static struct i2c_gpio_platform_data __initdata snappercl15_i2c_gpio_data = { - .sda_pin = EP93XX_GPIO_LINE_EEDAT, - .sda_is_open_drain = 0, - .scl_pin = EP93XX_GPIO_LINE_EECLK, - .scl_is_open_drain = 0, - .udelay = 0, - .timeout = 0, -}; - static struct i2c_board_info __initdata snappercl15_i2c_data[] = { { /* Audio codec */ @@ -161,7 +151,7 @@ static void __init snappercl15_init_machine(void) { ep93xx_init_devices(); ep93xx_register_eth(&snappercl15_eth_data, 1); - ep93xx_register_i2c(&snappercl15_i2c_gpio_data, snappercl15_i2c_data, + ep93xx_register_i2c(snappercl15_i2c_data, ARRAY_SIZE(snappercl15_i2c_data)); ep93xx_register_fb(&snappercl15_fb_info); snappercl15_register_audio(); diff --git a/arch/arm/mach-ep93xx/vision_ep9307.c b/arch/arm/mach-ep93xx/vision_ep9307.c index 1daf9441058c..5a0b6187990a 100644 --- a/arch/arm/mach-ep93xx/vision_ep9307.c +++ b/arch/arm/mach-ep93xx/vision_ep9307.c @@ -22,7 +22,6 @@ #include #include #include -#include #include #include #include @@ -144,10 +143,6 @@ static struct pca953x_platform_data pca953x_77_gpio_data = { /************************************************************************* * I2C Bus *************************************************************************/ -static struct i2c_gpio_platform_data vision_i2c_gpio_data __initdata = { - .sda_pin = EP93XX_GPIO_LINE_EEDAT, - .scl_pin = EP93XX_GPIO_LINE_EECLK, -}; static struct i2c_board_info vision_i2c_info[] __initdata = { { @@ -289,7 +284,7 @@ static void __init vision_init_machine(void) vision_i2c_info[1].irq = gpio_to_irq(EP93XX_GPIO_LINE_F(7)); - ep93xx_register_i2c(&vision_i2c_gpio_data, vision_i2c_info, + ep93xx_register_i2c(vision_i2c_info, ARRAY_SIZE(vision_i2c_info)); ep93xx_register_spi(&vision_spi_master, vision_spi_board_info, ARRAY_SIZE(vision_spi_board_info)); diff --git a/arch/arm/mach-ixp4xx/avila-setup.c b/arch/arm/mach-ixp4xx/avila-setup.c index 6beec150c060..72122b5e7f28 100644 --- a/arch/arm/mach-ixp4xx/avila-setup.c +++ b/arch/arm/mach-ixp4xx/avila-setup.c @@ -17,7 +17,7 @@ #include #include #include -#include +#include #include #include #include @@ -49,16 +49,21 @@ static struct platform_device avila_flash = { .resource = &avila_flash_resource, }; -static struct i2c_gpio_platform_data avila_i2c_gpio_data = { - .sda_pin = AVILA_SDA_PIN, - .scl_pin = AVILA_SCL_PIN, +static struct gpiod_lookup_table avila_i2c_gpiod_table = { + .dev_id = "i2c-gpio", + .table = { + GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", AVILA_SDA_PIN, + NULL, 0, GPIO_ACTIVE_HIGH), + GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", AVILA_SCL_PIN, + NULL, 1, GPIO_ACTIVE_HIGH), + }, }; static struct platform_device avila_i2c_gpio = { .name = "i2c-gpio", .id = 0, .dev = { - .platform_data = &avila_i2c_gpio_data, + .platform_data = NULL, }, }; @@ -147,6 +152,8 @@ static void __init avila_init(void) avila_flash_resource.end = IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1; + gpiod_add_lookup_table(&avila_i2c_gpiod_table); + platform_add_devices(avila_devices, ARRAY_SIZE(avila_devices)); avila_pata_resources[0].start = IXP4XX_EXP_BUS_BASE(1); diff --git a/arch/arm/mach-ixp4xx/dsmg600-setup.c b/arch/arm/mach-ixp4xx/dsmg600-setup.c index b3bd0e137f6d..68ccd669051b 100644 --- a/arch/arm/mach-ixp4xx/dsmg600-setup.c +++ b/arch/arm/mach-ixp4xx/dsmg600-setup.c @@ -25,7 +25,7 @@ #include #include #include -#include +#include #include @@ -68,16 +68,21 @@ static struct platform_device dsmg600_flash = { .resource = &dsmg600_flash_resource, }; -static struct i2c_gpio_platform_data dsmg600_i2c_gpio_data = { - .sda_pin = DSMG600_SDA_PIN, - .scl_pin = DSMG600_SCL_PIN, +static struct gpiod_lookup_table dsmg600_i2c_gpiod_table = { + .dev_id = "i2c-gpio", + .table = { + GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", DSMG600_SDA_PIN, + NULL, 0, GPIO_ACTIVE_HIGH), + GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", DSMG600_SCL_PIN, + NULL, 1, GPIO_ACTIVE_HIGH), + }, }; static struct platform_device dsmg600_i2c_gpio = { .name = "i2c-gpio", .id = 0, .dev = { - .platform_data = &dsmg600_i2c_gpio_data, + .platform_data = NULL, }, }; @@ -269,6 +274,7 @@ static void __init dsmg600_init(void) dsmg600_flash_resource.end = IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1; + gpiod_add_lookup_table(&dsmg600_i2c_gpiod_table); i2c_register_board_info(0, dsmg600_i2c_board_info, ARRAY_SIZE(dsmg600_i2c_board_info)); diff --git a/arch/arm/mach-ixp4xx/fsg-setup.c b/arch/arm/mach-ixp4xx/fsg-setup.c index 5c4b0c4a1b37..a0350ad15175 100644 --- a/arch/arm/mach-ixp4xx/fsg-setup.c +++ b/arch/arm/mach-ixp4xx/fsg-setup.c @@ -22,7 +22,7 @@ #include #include #include -#include +#include #include #include #include @@ -54,16 +54,21 @@ static struct platform_device fsg_flash = { .resource = &fsg_flash_resource, }; -static struct i2c_gpio_platform_data fsg_i2c_gpio_data = { - .sda_pin = FSG_SDA_PIN, - .scl_pin = FSG_SCL_PIN, +static struct gpiod_lookup_table fsg_i2c_gpiod_table = { + .dev_id = "i2c-gpio", + .table = { + GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", FSG_SDA_PIN, + NULL, 0, GPIO_ACTIVE_HIGH), + GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", FSG_SCL_PIN, + NULL, 1, GPIO_ACTIVE_HIGH), + }, }; static struct platform_device fsg_i2c_gpio = { .name = "i2c-gpio", .id = 0, .dev = { - .platform_data = &fsg_i2c_gpio_data, + .platform_data = NULL, }, }; @@ -196,6 +201,7 @@ static void __init fsg_init(void) /* Configure CS2 for operation, 8bit and writable */ *IXP4XX_EXP_CS2 = 0xbfff0002; + gpiod_add_lookup_table(&fsg_i2c_gpiod_table); i2c_register_board_info(0, fsg_i2c_board_info, ARRAY_SIZE(fsg_i2c_board_info)); diff --git a/arch/arm/mach-ixp4xx/goramo_mlr.c b/arch/arm/mach-ixp4xx/goramo_mlr.c index 80bd9d6d04de..f1529aa3f8e2 100644 --- a/arch/arm/mach-ixp4xx/goramo_mlr.c +++ b/arch/arm/mach-ixp4xx/goramo_mlr.c @@ -6,7 +6,6 @@ #include #include #include -#include #include #include #include @@ -78,6 +77,12 @@ static u32 hw_bits = 0xFFFFFFFD; /* assume all hardware present */; static u8 control_value; +/* + * FIXME: this is reimplementing I2C bit-bangining. Move this + * over to using driver/i2c/busses/i2c-gpio.c like all other boards + * and register proper I2C device(s) on the bus for this. (See + * other IXP4xx boards for examples.) + */ static void set_scl(u8 value) { gpio_set_value(GPIO_SCL, !!value); @@ -216,20 +221,6 @@ static struct platform_device device_flash = { .resource = &flash_resource, }; - -/* I^2C interface */ -static struct i2c_gpio_platform_data i2c_data = { - .sda_pin = GPIO_SDA, - .scl_pin = GPIO_SCL, -}; - -static struct platform_device device_i2c = { - .name = "i2c-gpio", - .id = 0, - .dev = { .platform_data = &i2c_data }, -}; - - /* IXP425 2 UART ports */ static struct resource uart_resources[] = { { @@ -411,9 +402,6 @@ static void __init gmlr_init(void) if (hw_bits & CFG_HW_HAS_HSS1) device_tab[devices++] = &device_hss_tab[1]; /* max index 5 */ - if (hw_bits & CFG_HW_HAS_EEPROM) - device_tab[devices++] = &device_i2c; /* max index 6 */ - gpio_request(GPIO_SCL, "SCL/clock"); gpio_request(GPIO_SDA, "SDA/data"); gpio_request(GPIO_STR, "strobe"); diff --git a/arch/arm/mach-ixp4xx/ixdp425-setup.c b/arch/arm/mach-ixp4xx/ixdp425-setup.c index 93b89291c06b..8937263cec4a 100644 --- a/arch/arm/mach-ixp4xx/ixdp425-setup.c +++ b/arch/arm/mach-ixp4xx/ixdp425-setup.c @@ -14,7 +14,7 @@ #include #include #include -#include +#include #include #include #include @@ -122,16 +122,21 @@ static struct platform_device ixdp425_flash_nand = { }; #endif /* CONFIG_MTD_NAND_PLATFORM */ -static struct i2c_gpio_platform_data ixdp425_i2c_gpio_data = { - .sda_pin = IXDP425_SDA_PIN, - .scl_pin = IXDP425_SCL_PIN, +static struct gpiod_lookup_table ixdp425_i2c_gpiod_table = { + .dev_id = "i2c-gpio", + .table = { + GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", IXDP425_SDA_PIN, + NULL, 0, GPIO_ACTIVE_HIGH), + GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", IXDP425_SCL_PIN, + NULL, 1, GPIO_ACTIVE_HIGH), + }, }; static struct platform_device ixdp425_i2c_gpio = { .name = "i2c-gpio", .id = 0, .dev = { - .platform_data = &ixdp425_i2c_gpio_data, + .platform_data = NULL, }, }; @@ -245,6 +250,7 @@ static void __init ixdp425_init(void) ixdp425_uart_data[1].flags = 0; } + gpiod_add_lookup_table(&ixdp425_i2c_gpiod_table); platform_add_devices(ixdp425_devices, ARRAY_SIZE(ixdp425_devices)); } diff --git a/arch/arm/mach-ixp4xx/nas100d-setup.c b/arch/arm/mach-ixp4xx/nas100d-setup.c index 4e0f762bc651..612ec8c63456 100644 --- a/arch/arm/mach-ixp4xx/nas100d-setup.c +++ b/arch/arm/mach-ixp4xx/nas100d-setup.c @@ -27,7 +27,7 @@ #include #include #include -#include +#include #include #include #include @@ -100,16 +100,21 @@ static struct platform_device nas100d_leds = { .dev.platform_data = &nas100d_led_data, }; -static struct i2c_gpio_platform_data nas100d_i2c_gpio_data = { - .sda_pin = NAS100D_SDA_PIN, - .scl_pin = NAS100D_SCL_PIN, +static struct gpiod_lookup_table nas100d_i2c_gpiod_table = { + .dev_id = "i2c-gpio", + .table = { + GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", NAS100D_SDA_PIN, + NULL, 0, GPIO_ACTIVE_HIGH), + GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", NAS100D_SCL_PIN, + NULL, 1, GPIO_ACTIVE_HIGH), + }, }; static struct platform_device nas100d_i2c_gpio = { .name = "i2c-gpio", .id = 0, .dev = { - .platform_data = &nas100d_i2c_gpio_data, + .platform_data = NULL, }, }; @@ -280,6 +285,7 @@ static void __init nas100d_init(void) nas100d_flash_resource.end = IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1; + gpiod_add_lookup_table(&nas100d_i2c_gpiod_table); i2c_register_board_info(0, nas100d_i2c_board_info, ARRAY_SIZE(nas100d_i2c_board_info)); diff --git a/arch/arm/mach-ixp4xx/nslu2-setup.c b/arch/arm/mach-ixp4xx/nslu2-setup.c index 88c025f52d8d..13afb03b50fa 100644 --- a/arch/arm/mach-ixp4xx/nslu2-setup.c +++ b/arch/arm/mach-ixp4xx/nslu2-setup.c @@ -24,7 +24,7 @@ #include #include #include -#include +#include #include #include #include @@ -68,9 +68,14 @@ static struct platform_device nslu2_flash = { .resource = &nslu2_flash_resource, }; -static struct i2c_gpio_platform_data nslu2_i2c_gpio_data = { - .sda_pin = NSLU2_SDA_PIN, - .scl_pin = NSLU2_SCL_PIN, +static struct gpiod_lookup_table nslu2_i2c_gpiod_table = { + .dev_id = "i2c-gpio", + .table = { + GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", NSLU2_SDA_PIN, + NULL, 0, GPIO_ACTIVE_HIGH), + GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", NSLU2_SCL_PIN, + NULL, 1, GPIO_ACTIVE_HIGH), + }, }; static struct i2c_board_info __initdata nslu2_i2c_board_info [] = { @@ -115,7 +120,7 @@ static struct platform_device nslu2_i2c_gpio = { .name = "i2c-gpio", .id = 0, .dev = { - .platform_data = &nslu2_i2c_gpio_data, + .platform_data = NULL, }, }; @@ -250,6 +255,7 @@ static void __init nslu2_init(void) nslu2_flash_resource.end = IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1; + gpiod_add_lookup_table(&nslu2_i2c_gpiod_table); i2c_register_board_info(0, nslu2_i2c_board_info, ARRAY_SIZE(nslu2_i2c_board_info)); diff --git a/arch/arm/mach-ks8695/board-acs5k.c b/arch/arm/mach-ks8695/board-acs5k.c index e4d709c8ed32..f034724e01e1 100644 --- a/arch/arm/mach-ks8695/board-acs5k.c +++ b/arch/arm/mach-ks8695/board-acs5k.c @@ -16,7 +16,7 @@ #include #include #include - +#include #include #include #include @@ -38,9 +38,15 @@ #include "generic.h" +static struct gpiod_lookup_table acs5k_i2c_gpiod_table = { + .dev_id = "i2c-gpio", + .table = { + GPIO_LOOKUP_IDX("KS8695", 4, NULL, 0, GPIO_ACTIVE_HIGH), + GPIO_LOOKUP_IDX("KS8695", 5, NULL, 1, GPIO_ACTIVE_HIGH), + }, +}; + static struct i2c_gpio_platform_data acs5k_i2c_device_platdata = { - .sda_pin = 4, - .scl_pin = 5, .udelay = 10, }; @@ -95,6 +101,7 @@ static struct i2c_board_info acs5k_i2c_devs[] __initdata = { static void acs5k_i2c_init(void) { /* The gpio interface */ + gpiod_add_lookup_table(&acs5k_i2c_gpiod_table); platform_device_register(&acs5k_i2c_device); /* I2C devices */ i2c_register_board_info(0, acs5k_i2c_devs, diff --git a/arch/arm/mach-pxa/palmz72.c b/arch/arm/mach-pxa/palmz72.c index 29630061e700..94f75632c007 100644 --- a/arch/arm/mach-pxa/palmz72.c +++ b/arch/arm/mach-pxa/palmz72.c @@ -31,6 +31,7 @@ #include #include #include +#include #include #include @@ -320,9 +321,15 @@ static struct soc_camera_link palmz72_iclink = { .flags = SOCAM_DATAWIDTH_8, }; +static struct gpiod_lookup_table palmz72_i2c_gpiod_table = { + .dev_id = "i2c-gpio", + .table = { + GPIO_LOOKUP_IDX("gpio-pxa", 118, NULL, 0, GPIO_ACTIVE_HIGH), + GPIO_LOOKUP_IDX("gpio-pxa", 117, NULL, 1, GPIO_ACTIVE_HIGH), + }, +}; + static struct i2c_gpio_platform_data palmz72_i2c_bus_data = { - .sda_pin = 118, - .scl_pin = 117, .udelay = 10, .timeout = 100, }; @@ -369,6 +376,7 @@ static void __init palmz72_camera_init(void) { palmz72_cam_gpio_init(); pxa_set_camera_info(&palmz72_pxacamera_platform_data); + gpiod_add_lookup_table(&palmz72_i2c_gpiod_table); platform_device_register(&palmz72_i2c_bus_device); platform_device_register(&palmz72_camera); } diff --git a/arch/arm/mach-pxa/viper.c b/arch/arm/mach-pxa/viper.c index 8e89d91b206b..a680742bee2b 100644 --- a/arch/arm/mach-pxa/viper.c +++ b/arch/arm/mach-pxa/viper.c @@ -36,6 +36,7 @@ #include #include #include +#include #include #include #include @@ -458,9 +459,17 @@ static struct platform_device smc91x_device = { }; /* i2c */ +static struct gpiod_lookup_table viper_i2c_gpiod_table = { + .dev_id = "i2c-gpio", + .table = { + GPIO_LOOKUP_IDX("gpio-pxa", VIPER_RTC_I2C_SDA_GPIO, + NULL, 0, GPIO_ACTIVE_HIGH), + GPIO_LOOKUP_IDX("gpio-pxa", VIPER_RTC_I2C_SCL_GPIO, + NULL, 1, GPIO_ACTIVE_HIGH), + }, +}; + static struct i2c_gpio_platform_data i2c_bus_data = { - .sda_pin = VIPER_RTC_I2C_SDA_GPIO, - .scl_pin = VIPER_RTC_I2C_SCL_GPIO, .udelay = 10, .timeout = HZ, }; @@ -779,12 +788,20 @@ static int __init viper_tpm_setup(char *str) __setup("tpm=", viper_tpm_setup); +struct gpiod_lookup_table viper_tpm_i2c_gpiod_table = { + .dev_id = "i2c-gpio", + .table = { + GPIO_LOOKUP_IDX("gpio-pxa", VIPER_TPM_I2C_SDA_GPIO, + NULL, 0, GPIO_ACTIVE_HIGH), + GPIO_LOOKUP_IDX("gpio-pxa", VIPER_TPM_I2C_SCL_GPIO, + NULL, 1, GPIO_ACTIVE_HIGH), + }, +}; + static void __init viper_tpm_init(void) { struct platform_device *tpm_device; struct i2c_gpio_platform_data i2c_tpm_data = { - .sda_pin = VIPER_TPM_I2C_SDA_GPIO, - .scl_pin = VIPER_TPM_I2C_SCL_GPIO, .udelay = 10, .timeout = HZ, }; @@ -794,6 +811,7 @@ static void __init viper_tpm_init(void) if (!viper_tpm) return; + gpiod_add_lookup_table(&viper_tpm_i2c_gpiod_table); tpm_device = platform_device_alloc("i2c-gpio", 2); if (tpm_device) { if (!platform_device_add_data(tpm_device, @@ -943,6 +961,7 @@ static void __init viper_init(void) smc91x_device.num_resources--; pxa_set_i2c_info(NULL); + gpiod_add_lookup_table(&viper_i2c_gpiod_table); pwm_add_table(viper_pwm_lookup, ARRAY_SIZE(viper_pwm_lookup)); platform_add_devices(viper_devs, ARRAY_SIZE(viper_devs)); diff --git a/arch/arm/mach-sa1100/simpad.c b/arch/arm/mach-sa1100/simpad.c index bb3ca9c763de..c6e7e6d8733a 100644 --- a/arch/arm/mach-sa1100/simpad.c +++ b/arch/arm/mach-sa1100/simpad.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include @@ -323,9 +324,15 @@ static struct platform_device simpad_gpio_leds = { /* * i2c */ +static struct gpiod_lookup_table simpad_i2c_gpiod_table = { + .dev_id = "i2c-gpio", + .table = { + GPIO_LOOKUP_IDX("gpio", GPIO_GPIO21, NULL, 0, GPIO_ACTIVE_HIGH), + GPIO_LOOKUP_IDX("gpio", GPIO_GPIO25, NULL, 1, GPIO_ACTIVE_HIGH), + }, +}; + static struct i2c_gpio_platform_data simpad_i2c_data = { - .sda_pin = GPIO_GPIO21, - .scl_pin = GPIO_GPIO25, .udelay = 10, .timeout = HZ, }; @@ -380,6 +387,7 @@ static int __init simpad_init(void) ARRAY_SIZE(simpad_flash_resources)); sa11x0_register_mcp(&simpad_mcp_data); + gpiod_add_lookup_table(&simpad_i2c_gpiod_table); ret = platform_add_devices(devices, ARRAY_SIZE(devices)); if(ret) printk(KERN_WARNING "simpad: Unable to register mq200 framebuffer device"); diff --git a/arch/blackfin/mach-bf533/boards/blackstamp.c b/arch/blackfin/mach-bf533/boards/blackstamp.c index 0ccf0cf4daaf..d801ca5ca6c4 100644 --- a/arch/blackfin/mach-bf533/boards/blackstamp.c +++ b/arch/blackfin/mach-bf533/boards/blackstamp.c @@ -22,6 +22,7 @@ #include #include #include +#include #include #include #include @@ -362,11 +363,17 @@ static struct platform_device bfin_device_gpiokeys = { #if IS_ENABLED(CONFIG_I2C_GPIO) #include +static struct gpiod_lookup_table bfin_i2c_gpiod_table = { + .dev_id = "i2c-gpio", + .table = { + GPIO_LOOKUP_IDX("BFIN-GPIO", GPIO_PF8, NULL, 0, + GPIO_ACTIVE_HIGH), + GPIO_LOOKUP_IDX("BFIN-GPIO", GPIO_PF9, NULL, 1, + GPIO_ACTIVE_HIGH), + }, +}; + static struct i2c_gpio_platform_data i2c_gpio_data = { - .sda_pin = GPIO_PF8, - .scl_pin = GPIO_PF9, - .sda_is_open_drain = 0, - .scl_is_open_drain = 0, .udelay = 40, }; /* This hasn't actually been used these pins * are (currently) free pins on the expansion connector */ @@ -462,7 +469,9 @@ static int __init blackstamp_init(void) int ret; printk(KERN_INFO "%s(): registering device resources\n", __func__); - +#if IS_ENABLED(CONFIG_I2C_GPIO) + gpiod_add_lookup_table(&bfin_i2c_gpiod_table); +#endif i2c_register_board_info(0, bfin_i2c_board_info, ARRAY_SIZE(bfin_i2c_board_info)); diff --git a/arch/blackfin/mach-bf533/boards/ezkit.c b/arch/blackfin/mach-bf533/boards/ezkit.c index 3625e9eaa8a8..463a72358b0e 100644 --- a/arch/blackfin/mach-bf533/boards/ezkit.c +++ b/arch/blackfin/mach-bf533/boards/ezkit.c @@ -19,6 +19,7 @@ #endif #include #include +#include #include #include #include @@ -390,11 +391,17 @@ static struct platform_device bfin_device_gpiokeys = { #if IS_ENABLED(CONFIG_I2C_GPIO) #include +static struct gpiod_lookup_table bfin_i2c_gpiod_table = { + .dev_id = "i2c-gpio", + .table = { + GPIO_LOOKUP_IDX("BFIN-GPIO", GPIO_PF1, NULL, 0, + GPIO_ACTIVE_HIGH), + GPIO_LOOKUP_IDX("BFIN-GPIO", GPIO_PF0, NULL, 1, + GPIO_ACTIVE_HIGH), + }, +}; + static struct i2c_gpio_platform_data i2c_gpio_data = { - .sda_pin = GPIO_PF1, - .scl_pin = GPIO_PF0, - .sda_is_open_drain = 0, - .scl_is_open_drain = 0, .udelay = 40, }; @@ -516,6 +523,9 @@ static struct platform_device *ezkit_devices[] __initdata = { static int __init ezkit_init(void) { printk(KERN_INFO "%s(): registering device resources\n", __func__); +#if IS_ENABLED(CONFIG_I2C_GPIO) + gpiod_add_lookup_table(&bfin_i2c_gpiod_table); +#endif platform_add_devices(ezkit_devices, ARRAY_SIZE(ezkit_devices)); spi_register_board_info(bfin_spi_board_info, ARRAY_SIZE(bfin_spi_board_info)); i2c_register_board_info(0, bfin_i2c_board_info, diff --git a/arch/blackfin/mach-bf533/boards/stamp.c b/arch/blackfin/mach-bf533/boards/stamp.c index 23eada79439c..d2479359adb7 100644 --- a/arch/blackfin/mach-bf533/boards/stamp.c +++ b/arch/blackfin/mach-bf533/boards/stamp.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #include #include @@ -512,11 +513,17 @@ static struct platform_device bfin_device_gpiokeys = { #if IS_ENABLED(CONFIG_I2C_GPIO) #include +static struct gpiod_lookup_table bfin_i2c_gpiod_table = { + .dev_id = "i2c-gpio", + .table = { + GPIO_LOOKUP_IDX("BFIN-GPIO", GPIO_PF2, NULL, 0, + GPIO_ACTIVE_HIGH), + GPIO_LOOKUP_IDX("BFIN-GPIO", GPIO_PF3, NULL, 1, + GPIO_ACTIVE_HIGH), + }, +}; + static struct i2c_gpio_platform_data i2c_gpio_data = { - .sda_pin = GPIO_PF2, - .scl_pin = GPIO_PF3, - .sda_is_open_drain = 0, - .scl_is_open_drain = 0, .udelay = 10, }; @@ -848,6 +855,9 @@ static int __init stamp_init(void) printk(KERN_INFO "%s(): registering device resources\n", __func__); +#if IS_ENABLED(CONFIG_I2C_GPIO) + gpiod_add_lookup_table(&bfin_i2c_gpiod_table); +#endif i2c_register_board_info(0, bfin_i2c_board_info, ARRAY_SIZE(bfin_i2c_board_info)); diff --git a/arch/blackfin/mach-bf561/boards/ezkit.c b/arch/blackfin/mach-bf561/boards/ezkit.c index 57d1c43726d9..72f757ebaa84 100644 --- a/arch/blackfin/mach-bf561/boards/ezkit.c +++ b/arch/blackfin/mach-bf561/boards/ezkit.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include #include @@ -379,11 +380,17 @@ static struct platform_device bfin_device_gpiokeys = { #if IS_ENABLED(CONFIG_I2C_GPIO) #include +static struct gpiod_lookup_table bfin_i2c_gpiod_table = { + .dev_id = "i2c-gpio", + .table = { + GPIO_LOOKUP_IDX("BFIN-GPIO", GPIO_PF1, NULL, 0, + GPIO_ACTIVE_HIGH), + GPIO_LOOKUP_IDX("BFIN-GPIO", GPIO_PF0, NULL, 1, + GPIO_ACTIVE_HIGH), + }, +}; + static struct i2c_gpio_platform_data i2c_gpio_data = { - .sda_pin = GPIO_PF1, - .scl_pin = GPIO_PF0, - .sda_is_open_drain = 0, - .scl_is_open_drain = 0, .udelay = 10, }; @@ -633,6 +640,9 @@ static int __init ezkit_init(void) printk(KERN_INFO "%s(): registering device resources\n", __func__); +#if IS_ENABLED(CONFIG_I2C_GPIO) + gpiod_add_lookup_table(&bfin_i2c_gpiod_table); +#endif ret = platform_add_devices(ezkit_devices, ARRAY_SIZE(ezkit_devices)); if (ret < 0) return ret; diff --git a/arch/mips/alchemy/board-gpr.c b/arch/mips/alchemy/board-gpr.c index 6fb6b3faa158..daebc36e5ecb 100644 --- a/arch/mips/alchemy/board-gpr.c +++ b/arch/mips/alchemy/board-gpr.c @@ -30,6 +30,7 @@ #include #include #include +#include #include #include #include @@ -218,10 +219,23 @@ static struct platform_device gpr_led_devices = { /* * I2C */ +static struct gpiod_lookup_table gpr_i2c_gpiod_table = { + .dev_id = "i2c-gpio", + .table = { + /* + * This should be on "GPIO2" which has base at 200 so + * the global numbers 209 and 210 should correspond to + * local offsets 9 and 10. + */ + GPIO_LOOKUP_IDX("alchemy-gpio2", 9, NULL, 0, + GPIO_ACTIVE_HIGH), + GPIO_LOOKUP_IDX("alchemy-gpio2", 10, NULL, 1, + GPIO_ACTIVE_HIGH), + }, +}; + static struct i2c_gpio_platform_data gpr_i2c_data = { - .sda_pin = 209, .sda_is_open_drain = 1, - .scl_pin = 210, .scl_is_open_drain = 1, .udelay = 2, /* ~100 kHz */ .timeout = HZ, @@ -295,6 +309,7 @@ arch_initcall(gpr_pci_init); static int __init gpr_dev_init(void) { + gpiod_add_lookup_table(&gpr_i2c_gpiod_table); i2c_register_board_info(0, gpr_i2c_info, ARRAY_SIZE(gpr_i2c_info)); return platform_add_devices(gpr_devices, ARRAY_SIZE(gpr_devices)); diff --git a/arch/mips/ath79/mach-pb44.c b/arch/mips/ath79/mach-pb44.c index be78298dffb4..a95409063847 100644 --- a/arch/mips/ath79/mach-pb44.c +++ b/arch/mips/ath79/mach-pb44.c @@ -11,7 +11,7 @@ #include #include #include -#include +#include #include #include "machtypes.h" @@ -33,16 +33,21 @@ #define PB44_KEYS_POLL_INTERVAL 20 /* msecs */ #define PB44_KEYS_DEBOUNCE_INTERVAL (3 * PB44_KEYS_POLL_INTERVAL) -static struct i2c_gpio_platform_data pb44_i2c_gpio_data = { - .sda_pin = PB44_GPIO_I2C_SDA, - .scl_pin = PB44_GPIO_I2C_SCL, +static struct gpiod_lookup_table pb44_i2c_gpiod_table = { + .dev_id = "i2c-gpio", + .table = { + GPIO_LOOKUP_IDX("ath79-gpio", PB44_GPIO_I2C_SDA, + NULL, 0, GPIO_ACTIVE_HIGH), + GPIO_LOOKUP_IDX("ath79-gpio", PB44_GPIO_I2C_SCL, + NULL, 1, GPIO_ACTIVE_HIGH), + }, }; static struct platform_device pb44_i2c_gpio_device = { .name = "i2c-gpio", .id = 0, .dev = { - .platform_data = &pb44_i2c_gpio_data, + .platform_data = NULL, } }; @@ -103,6 +108,7 @@ static struct ath79_spi_platform_data pb44_spi_data = { static void __init pb44_init(void) { + gpiod_add_lookup_table(&pb44_i2c_gpiod_table); i2c_register_board_info(0, pb44_i2c_board_info, ARRAY_SIZE(pb44_i2c_board_info)); platform_device_register(&pb44_i2c_gpio_device); -- cgit v1.2.3 From 4d0ce62c0a02e41a65cfdcfe277f5be430edc371 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Sun, 10 Sep 2017 23:03:32 +0200 Subject: i2c: gpio: Augment all boardfiles to use open drain We now handle the open drain mode internally in the I2C GPIO driver, but we will get warnings from the gpiolib that we override the default mode of the line so it becomes open drain. We can fix all in-kernel users by simply passing the right flag along in the descriptor table, and we already touched all of these files in the series so let's just tidy it up. Cc: Steven Miao Cc: Ralf Baechle Acked-by: Olof Johansson Acked-by: Lee Jones Acked-by: Robert Jarzmik Acked-by: Ralf Baechle Acked-by: Wu, Aaron Acked-by: Arnd Bergmann Tested-by: Geert Uytterhoeven Signed-off-by: Linus Walleij --- arch/arm/mach-ep93xx/core.c | 6 ++++-- arch/arm/mach-ixp4xx/avila-setup.c | 4 ++-- arch/arm/mach-ixp4xx/dsmg600-setup.c | 4 ++-- arch/arm/mach-ixp4xx/fsg-setup.c | 4 ++-- arch/arm/mach-ixp4xx/ixdp425-setup.c | 4 ++-- arch/arm/mach-ixp4xx/nas100d-setup.c | 4 ++-- arch/arm/mach-ixp4xx/nslu2-setup.c | 4 ++-- arch/arm/mach-ks8695/board-acs5k.c | 6 ++++-- arch/arm/mach-pxa/palmz72.c | 6 ++++-- arch/arm/mach-pxa/viper.c | 8 ++++---- arch/arm/mach-sa1100/simpad.c | 6 ++++-- arch/blackfin/mach-bf533/boards/blackstamp.c | 4 ++-- arch/blackfin/mach-bf533/boards/ezkit.c | 4 ++-- arch/blackfin/mach-bf533/boards/stamp.c | 4 ++-- arch/blackfin/mach-bf561/boards/ezkit.c | 4 ++-- arch/mips/alchemy/board-gpr.c | 4 ++++ arch/mips/ath79/mach-pb44.c | 4 ++-- drivers/mfd/sm501.c | 4 ++-- 18 files changed, 48 insertions(+), 36 deletions(-) (limited to 'arch') diff --git a/arch/arm/mach-ep93xx/core.c b/arch/arm/mach-ep93xx/core.c index 7e99fe829ad1..e70feec6fad5 100644 --- a/arch/arm/mach-ep93xx/core.c +++ b/arch/arm/mach-ep93xx/core.c @@ -326,8 +326,10 @@ static struct gpiod_lookup_table ep93xx_i2c_gpiod_table = { .dev_id = "i2c-gpio", .table = { /* Use local offsets on gpiochip/port "G" */ - GPIO_LOOKUP_IDX("G", 1, NULL, 0, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("G", 0, NULL, 1, GPIO_ACTIVE_HIGH), + GPIO_LOOKUP_IDX("G", 1, NULL, 0, + GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), + GPIO_LOOKUP_IDX("G", 0, NULL, 1, + GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), }, }; diff --git a/arch/arm/mach-ixp4xx/avila-setup.c b/arch/arm/mach-ixp4xx/avila-setup.c index 72122b5e7f28..bb6fbfc9b11a 100644 --- a/arch/arm/mach-ixp4xx/avila-setup.c +++ b/arch/arm/mach-ixp4xx/avila-setup.c @@ -53,9 +53,9 @@ static struct gpiod_lookup_table avila_i2c_gpiod_table = { .dev_id = "i2c-gpio", .table = { GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", AVILA_SDA_PIN, - NULL, 0, GPIO_ACTIVE_HIGH), + NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", AVILA_SCL_PIN, - NULL, 1, GPIO_ACTIVE_HIGH), + NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), }, }; diff --git a/arch/arm/mach-ixp4xx/dsmg600-setup.c b/arch/arm/mach-ixp4xx/dsmg600-setup.c index 68ccd669051b..af543dd3da5d 100644 --- a/arch/arm/mach-ixp4xx/dsmg600-setup.c +++ b/arch/arm/mach-ixp4xx/dsmg600-setup.c @@ -72,9 +72,9 @@ static struct gpiod_lookup_table dsmg600_i2c_gpiod_table = { .dev_id = "i2c-gpio", .table = { GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", DSMG600_SDA_PIN, - NULL, 0, GPIO_ACTIVE_HIGH), + NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", DSMG600_SCL_PIN, - NULL, 1, GPIO_ACTIVE_HIGH), + NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), }, }; diff --git a/arch/arm/mach-ixp4xx/fsg-setup.c b/arch/arm/mach-ixp4xx/fsg-setup.c index a0350ad15175..8afb3f4db376 100644 --- a/arch/arm/mach-ixp4xx/fsg-setup.c +++ b/arch/arm/mach-ixp4xx/fsg-setup.c @@ -58,9 +58,9 @@ static struct gpiod_lookup_table fsg_i2c_gpiod_table = { .dev_id = "i2c-gpio", .table = { GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", FSG_SDA_PIN, - NULL, 0, GPIO_ACTIVE_HIGH), + NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", FSG_SCL_PIN, - NULL, 1, GPIO_ACTIVE_HIGH), + NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), }, }; diff --git a/arch/arm/mach-ixp4xx/ixdp425-setup.c b/arch/arm/mach-ixp4xx/ixdp425-setup.c index 8937263cec4a..4f358350a91f 100644 --- a/arch/arm/mach-ixp4xx/ixdp425-setup.c +++ b/arch/arm/mach-ixp4xx/ixdp425-setup.c @@ -126,9 +126,9 @@ static struct gpiod_lookup_table ixdp425_i2c_gpiod_table = { .dev_id = "i2c-gpio", .table = { GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", IXDP425_SDA_PIN, - NULL, 0, GPIO_ACTIVE_HIGH), + NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", IXDP425_SCL_PIN, - NULL, 1, GPIO_ACTIVE_HIGH), + NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), }, }; diff --git a/arch/arm/mach-ixp4xx/nas100d-setup.c b/arch/arm/mach-ixp4xx/nas100d-setup.c index 612ec8c63456..7e59c59c96a3 100644 --- a/arch/arm/mach-ixp4xx/nas100d-setup.c +++ b/arch/arm/mach-ixp4xx/nas100d-setup.c @@ -104,9 +104,9 @@ static struct gpiod_lookup_table nas100d_i2c_gpiod_table = { .dev_id = "i2c-gpio", .table = { GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", NAS100D_SDA_PIN, - NULL, 0, GPIO_ACTIVE_HIGH), + NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", NAS100D_SCL_PIN, - NULL, 1, GPIO_ACTIVE_HIGH), + NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), }, }; diff --git a/arch/arm/mach-ixp4xx/nslu2-setup.c b/arch/arm/mach-ixp4xx/nslu2-setup.c index 13afb03b50fa..224717eb8ac2 100644 --- a/arch/arm/mach-ixp4xx/nslu2-setup.c +++ b/arch/arm/mach-ixp4xx/nslu2-setup.c @@ -72,9 +72,9 @@ static struct gpiod_lookup_table nslu2_i2c_gpiod_table = { .dev_id = "i2c-gpio", .table = { GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", NSLU2_SDA_PIN, - NULL, 0, GPIO_ACTIVE_HIGH), + NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", NSLU2_SCL_PIN, - NULL, 1, GPIO_ACTIVE_HIGH), + NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), }, }; diff --git a/arch/arm/mach-ks8695/board-acs5k.c b/arch/arm/mach-ks8695/board-acs5k.c index f034724e01e1..937eb1d47e7b 100644 --- a/arch/arm/mach-ks8695/board-acs5k.c +++ b/arch/arm/mach-ks8695/board-acs5k.c @@ -41,8 +41,10 @@ static struct gpiod_lookup_table acs5k_i2c_gpiod_table = { .dev_id = "i2c-gpio", .table = { - GPIO_LOOKUP_IDX("KS8695", 4, NULL, 0, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("KS8695", 5, NULL, 1, GPIO_ACTIVE_HIGH), + GPIO_LOOKUP_IDX("KS8695", 4, NULL, 0, + GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), + GPIO_LOOKUP_IDX("KS8695", 5, NULL, 1, + GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), }, }; diff --git a/arch/arm/mach-pxa/palmz72.c b/arch/arm/mach-pxa/palmz72.c index 94f75632c007..5877e547cecd 100644 --- a/arch/arm/mach-pxa/palmz72.c +++ b/arch/arm/mach-pxa/palmz72.c @@ -324,8 +324,10 @@ static struct soc_camera_link palmz72_iclink = { static struct gpiod_lookup_table palmz72_i2c_gpiod_table = { .dev_id = "i2c-gpio", .table = { - GPIO_LOOKUP_IDX("gpio-pxa", 118, NULL, 0, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("gpio-pxa", 117, NULL, 1, GPIO_ACTIVE_HIGH), + GPIO_LOOKUP_IDX("gpio-pxa", 118, NULL, 0, + GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), + GPIO_LOOKUP_IDX("gpio-pxa", 117, NULL, 1, + GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), }, }; diff --git a/arch/arm/mach-pxa/viper.c b/arch/arm/mach-pxa/viper.c index a680742bee2b..4185e7ff073f 100644 --- a/arch/arm/mach-pxa/viper.c +++ b/arch/arm/mach-pxa/viper.c @@ -463,9 +463,9 @@ static struct gpiod_lookup_table viper_i2c_gpiod_table = { .dev_id = "i2c-gpio", .table = { GPIO_LOOKUP_IDX("gpio-pxa", VIPER_RTC_I2C_SDA_GPIO, - NULL, 0, GPIO_ACTIVE_HIGH), + NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), GPIO_LOOKUP_IDX("gpio-pxa", VIPER_RTC_I2C_SCL_GPIO, - NULL, 1, GPIO_ACTIVE_HIGH), + NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), }, }; @@ -792,9 +792,9 @@ struct gpiod_lookup_table viper_tpm_i2c_gpiod_table = { .dev_id = "i2c-gpio", .table = { GPIO_LOOKUP_IDX("gpio-pxa", VIPER_TPM_I2C_SDA_GPIO, - NULL, 0, GPIO_ACTIVE_HIGH), + NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), GPIO_LOOKUP_IDX("gpio-pxa", VIPER_TPM_I2C_SCL_GPIO, - NULL, 1, GPIO_ACTIVE_HIGH), + NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), }, }; diff --git a/arch/arm/mach-sa1100/simpad.c b/arch/arm/mach-sa1100/simpad.c index c6e7e6d8733a..91526024964b 100644 --- a/arch/arm/mach-sa1100/simpad.c +++ b/arch/arm/mach-sa1100/simpad.c @@ -327,8 +327,10 @@ static struct platform_device simpad_gpio_leds = { static struct gpiod_lookup_table simpad_i2c_gpiod_table = { .dev_id = "i2c-gpio", .table = { - GPIO_LOOKUP_IDX("gpio", GPIO_GPIO21, NULL, 0, GPIO_ACTIVE_HIGH), - GPIO_LOOKUP_IDX("gpio", GPIO_GPIO25, NULL, 1, GPIO_ACTIVE_HIGH), + GPIO_LOOKUP_IDX("gpio", GPIO_GPIO21, NULL, 0, + GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), + GPIO_LOOKUP_IDX("gpio", GPIO_GPIO25, NULL, 1, + GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), }, }; diff --git a/arch/blackfin/mach-bf533/boards/blackstamp.c b/arch/blackfin/mach-bf533/boards/blackstamp.c index d801ca5ca6c4..fab69c736515 100644 --- a/arch/blackfin/mach-bf533/boards/blackstamp.c +++ b/arch/blackfin/mach-bf533/boards/blackstamp.c @@ -367,9 +367,9 @@ static struct gpiod_lookup_table bfin_i2c_gpiod_table = { .dev_id = "i2c-gpio", .table = { GPIO_LOOKUP_IDX("BFIN-GPIO", GPIO_PF8, NULL, 0, - GPIO_ACTIVE_HIGH), + GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), GPIO_LOOKUP_IDX("BFIN-GPIO", GPIO_PF9, NULL, 1, - GPIO_ACTIVE_HIGH), + GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), }, }; diff --git a/arch/blackfin/mach-bf533/boards/ezkit.c b/arch/blackfin/mach-bf533/boards/ezkit.c index 463a72358b0e..d64d270e9e62 100644 --- a/arch/blackfin/mach-bf533/boards/ezkit.c +++ b/arch/blackfin/mach-bf533/boards/ezkit.c @@ -395,9 +395,9 @@ static struct gpiod_lookup_table bfin_i2c_gpiod_table = { .dev_id = "i2c-gpio", .table = { GPIO_LOOKUP_IDX("BFIN-GPIO", GPIO_PF1, NULL, 0, - GPIO_ACTIVE_HIGH), + GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), GPIO_LOOKUP_IDX("BFIN-GPIO", GPIO_PF0, NULL, 1, - GPIO_ACTIVE_HIGH), + GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), }, }; diff --git a/arch/blackfin/mach-bf533/boards/stamp.c b/arch/blackfin/mach-bf533/boards/stamp.c index d2479359adb7..27cbf2fa2c62 100644 --- a/arch/blackfin/mach-bf533/boards/stamp.c +++ b/arch/blackfin/mach-bf533/boards/stamp.c @@ -517,9 +517,9 @@ static struct gpiod_lookup_table bfin_i2c_gpiod_table = { .dev_id = "i2c-gpio", .table = { GPIO_LOOKUP_IDX("BFIN-GPIO", GPIO_PF2, NULL, 0, - GPIO_ACTIVE_HIGH), + GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), GPIO_LOOKUP_IDX("BFIN-GPIO", GPIO_PF3, NULL, 1, - GPIO_ACTIVE_HIGH), + GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), }, }; diff --git a/arch/blackfin/mach-bf561/boards/ezkit.c b/arch/blackfin/mach-bf561/boards/ezkit.c index 72f757ebaa84..acc5363f60c6 100644 --- a/arch/blackfin/mach-bf561/boards/ezkit.c +++ b/arch/blackfin/mach-bf561/boards/ezkit.c @@ -384,9 +384,9 @@ static struct gpiod_lookup_table bfin_i2c_gpiod_table = { .dev_id = "i2c-gpio", .table = { GPIO_LOOKUP_IDX("BFIN-GPIO", GPIO_PF1, NULL, 0, - GPIO_ACTIVE_HIGH), + GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), GPIO_LOOKUP_IDX("BFIN-GPIO", GPIO_PF0, NULL, 1, - GPIO_ACTIVE_HIGH), + GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), }, }; diff --git a/arch/mips/alchemy/board-gpr.c b/arch/mips/alchemy/board-gpr.c index daebc36e5ecb..328d697e72b4 100644 --- a/arch/mips/alchemy/board-gpr.c +++ b/arch/mips/alchemy/board-gpr.c @@ -235,6 +235,10 @@ static struct gpiod_lookup_table gpr_i2c_gpiod_table = { }; static struct i2c_gpio_platform_data gpr_i2c_data = { + /* + * The open drain mode is hardwired somewhere or an electrical + * property of the alchemy GPIO controller. + */ .sda_is_open_drain = 1, .scl_is_open_drain = 1, .udelay = 2, /* ~100 kHz */ diff --git a/arch/mips/ath79/mach-pb44.c b/arch/mips/ath79/mach-pb44.c index a95409063847..6b2c6f3baefa 100644 --- a/arch/mips/ath79/mach-pb44.c +++ b/arch/mips/ath79/mach-pb44.c @@ -37,9 +37,9 @@ static struct gpiod_lookup_table pb44_i2c_gpiod_table = { .dev_id = "i2c-gpio", .table = { GPIO_LOOKUP_IDX("ath79-gpio", PB44_GPIO_I2C_SDA, - NULL, 0, GPIO_ACTIVE_HIGH), + NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), GPIO_LOOKUP_IDX("ath79-gpio", PB44_GPIO_I2C_SCL, - NULL, 1, GPIO_ACTIVE_HIGH), + NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), }, }; diff --git a/drivers/mfd/sm501.c b/drivers/mfd/sm501.c index 4d40d013a412..ad774161a22d 100644 --- a/drivers/mfd/sm501.c +++ b/drivers/mfd/sm501.c @@ -1152,7 +1152,7 @@ static int sm501_register_gpio_i2c_instance(struct sm501_devdata *sm, lookup->table[0].chip_hwnum = iic->pin_sda % 32; lookup->table[0].con_id = NULL; lookup->table[0].idx = 0; - lookup->table[0].flags = GPIO_ACTIVE_HIGH; + lookup->table[0].flags = GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN; if (iic->pin_scl < 32) lookup->table[1].chip_label = "SM501-LOW"; else @@ -1160,7 +1160,7 @@ static int sm501_register_gpio_i2c_instance(struct sm501_devdata *sm, lookup->table[1].chip_hwnum = iic->pin_scl % 32; lookup->table[1].con_id = NULL; lookup->table[1].idx = 1; - lookup->table[1].flags = GPIO_ACTIVE_HIGH; + lookup->table[1].flags = GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN; gpiod_add_lookup_table(lookup); icd = dev_get_platdata(&pdev->dev); -- cgit v1.2.3 From d82e99a6f9b38cb1a044b4cd979bd49fd3f67cd2 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Tue, 7 Nov 2017 21:18:57 +0100 Subject: ARM: sa1100: simpad: Correct I2C GPIO offsets Arnd reported the following build bug bug: In file included from arch/arm/mach-sa1100/simpad.c:20:0: arch/arm/mach-sa1100/include/mach/SA-1100.h:1118:18: error: large integer implicitly truncated to unsigned type [-Werror=overflow] (0x00000001 << (Nb)) ^ include/linux/gpio/machine.h:56:16: note: in definition of macro 'GPIO_LOOKUP_IDX' .chip_hwnum = _chip_hwnum, ^~~~~~~~~~~ arch/arm/mach-sa1100/include/mach/SA-1100.h:1140:21: note: in expansion of macro 'GPIO_GPIO' ^~~~~~~~~ arch/arm/mach-sa1100/simpad.c:331:27: note: in expansion of macro 'GPIO_GPIO21' GPIO_LOOKUP_IDX("gpio", GPIO_GPIO21, NULL, 0, This is what happened: commit b2e63555592f81331c8da3afaa607d8cf83e8138 "i2c: gpio: Convert to use descriptors" commit 4d0ce62c0a02e41a65cfdcfe277f5be430edc371 "i2c: gpio: Augment all boardfiles to use open drain" together uncovered an old bug in the Simpad board file: as theGPIO_LOOKUP_IDX() encodes GPIO offsets on gpiochips in an u16 (see ) these GPIO "numbers" does not fit, since in arch/arm/mach-sa1100/include/mach/SA-1100.h it is defined as: #define GPIO_GPIO(Nb) (0x00000001 << (Nb)) (...) #define GPIO_GPIO21 GPIO_GPIO(21) /* GPIO [21] */ This is however provably wrong, since the i2c-gpio driver uses proper GPIO numbers, albeit earlier from the global number space, whereas this GPIO_GPIO21 is the local line offset in the GPIO register, which is used in other code but certainly not in the gpiolib GPIO driver in drivers/gpio/gpio-sa1100.c, which has code like this: static void sa1100_gpio_set(struct gpio_chip *chip, unsigned offset, int value) { int reg = value ? R_GPSR : R_GPCR; writel_relaxed(BIT(offset), sa1100_gpio_chip(chip)->membase + reg); } So far everything however compiled fine as an unsigned int was used to pass the GPIO numbers in struct i2c_gpio_platform_data. We can trace the actual error back to commit dbd406f9d0a1d33a1303eb75cbe3f9435513d339 "ARM: 7025/1: simpad: add GPIO based device definitions." This added the i2c_gpio with the wrong offsets. This commit was before the SA1100 was converted to use the gpiolib, but as can be seen from the contemporary gpio.c in mach-sa1100, it was already using: static int sa1100_gpio_get(struct gpio_chip *chip, unsigned offset) { return GPLR & GPIO_GPIO(offset); } And GPIO_GPIO() is essentially the BIT() macro. Reported-by: Arnd Bergmann Signed-off-by: Linus Walleij Acked-by: Arnd Bergmann Signed-off-by: Wolfram Sang --- arch/arm/mach-sa1100/simpad.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/arm/mach-sa1100/simpad.c b/arch/arm/mach-sa1100/simpad.c index 91526024964b..1c0a1766e781 100644 --- a/arch/arm/mach-sa1100/simpad.c +++ b/arch/arm/mach-sa1100/simpad.c @@ -327,9 +327,9 @@ static struct platform_device simpad_gpio_leds = { static struct gpiod_lookup_table simpad_i2c_gpiod_table = { .dev_id = "i2c-gpio", .table = { - GPIO_LOOKUP_IDX("gpio", GPIO_GPIO21, NULL, 0, + GPIO_LOOKUP_IDX("gpio", 21, NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), - GPIO_LOOKUP_IDX("gpio", GPIO_GPIO25, NULL, 1, + GPIO_LOOKUP_IDX("gpio", 25, NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN), }, }; -- cgit v1.2.3