diff options
Diffstat (limited to 'drivers/input/touchscreen')
30 files changed, 359 insertions, 237 deletions
diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c index 4d13db13b9e5..4247283c7271 100644 --- a/drivers/input/touchscreen/ads7846.c +++ b/drivers/input/touchscreen/ads7846.c @@ -138,6 +138,7 @@ struct ads7846 { void *filter_data; int (*get_pendown_state)(void); struct gpio_desc *gpio_pendown; + struct gpio_desc *gpio_hsync; void (*wait_for_sync)(void); }; @@ -634,10 +635,6 @@ ATTRIBUTE_GROUPS(ads784x); /*--------------------------------------------------------------------------*/ -static void null_wait_for_sync(void) -{ -} - static int ads7846_debounce_filter(void *ads, int data_idx, int *val) { struct ads7846 *ts = ads; @@ -790,6 +787,28 @@ static int ads7846_filter(struct ads7846 *ts) return 0; } +static void ads7846_wait_for_hsync(struct ads7846 *ts) +{ + if (ts->wait_for_sync) { + ts->wait_for_sync(); + return; + } + + if (!ts->gpio_hsync) + return; + + /* + * Wait for HSYNC to assert the line should be flagged + * as active low so here we are waiting for it to assert + */ + while (!gpiod_get_value(ts->gpio_hsync)) + cpu_relax(); + + /* Then we wait for it do de-assert */ + while (gpiod_get_value(ts->gpio_hsync)) + cpu_relax(); +} + static void ads7846_read_state(struct ads7846 *ts) { struct ads7846_packet *packet = ts->packet; @@ -800,7 +819,7 @@ static void ads7846_read_state(struct ads7846 *ts) packet->last_cmd_idx = 0; while (true) { - ts->wait_for_sync(); + ads7846_wait_for_hsync(ts); m = &ts->msg[msg_idx]; error = spi_sync(ts->spi, m); @@ -1268,7 +1287,11 @@ static int ads7846_probe(struct spi_device *spi) ts->penirq_recheck_delay_usecs = pdata->penirq_recheck_delay_usecs; - ts->wait_for_sync = pdata->wait_for_sync ? : null_wait_for_sync; + ts->wait_for_sync = pdata->wait_for_sync; + + ts->gpio_hsync = devm_gpiod_get_optional(dev, "ti,hsync", GPIOD_IN); + if (IS_ERR(ts->gpio_hsync)) + return PTR_ERR(ts->gpio_hsync); snprintf(ts->phys, sizeof(ts->phys), "%s/input0", dev_name(dev)); snprintf(ts->name, sizeof(ts->name), "ADS%d Touchscreen", ts->model); diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c index 8a606bd441ae..cfc92157701f 100644 --- a/drivers/input/touchscreen/atmel_mxt_ts.c +++ b/drivers/input/touchscreen/atmel_mxt_ts.c @@ -3069,9 +3069,7 @@ static struct attribute *mxt_attrs[] = { NULL }; -static const struct attribute_group mxt_attr_group = { - .attrs = mxt_attrs, -}; +ATTRIBUTE_GROUPS(mxt); static void mxt_start(struct mxt_data *data) { @@ -3348,18 +3346,8 @@ static int mxt_probe(struct i2c_client *client) if (error) goto err_disable_regulators; - error = sysfs_create_group(&client->dev.kobj, &mxt_attr_group); - if (error) { - dev_err(&client->dev, "Failure %d creating sysfs group\n", - error); - goto err_free_object; - } - return 0; -err_free_object: - mxt_free_input_device(data); - mxt_free_object_table(data); err_disable_regulators: regulator_bulk_disable(ARRAY_SIZE(data->regulators), data->regulators); @@ -3371,7 +3359,6 @@ static void mxt_remove(struct i2c_client *client) struct mxt_data *data = i2c_get_clientdata(client); disable_irq(data->irq); - sysfs_remove_group(&client->dev.kobj, &mxt_attr_group); mxt_free_input_device(data); mxt_free_object_table(data); regulator_bulk_disable(ARRAY_SIZE(data->regulators), @@ -3455,6 +3442,7 @@ MODULE_DEVICE_TABLE(i2c, mxt_id); static struct i2c_driver mxt_driver = { .driver = { .name = "atmel_mxt_ts", + .dev_groups = mxt_groups, .of_match_table = mxt_of_match, .acpi_match_table = ACPI_PTR(mxt_acpi_id), .pm = pm_sleep_ptr(&mxt_pm_ops), diff --git a/drivers/input/touchscreen/cyttsp4_core.c b/drivers/input/touchscreen/cyttsp4_core.c index 7cb26929dc73..9dc25eb2be44 100644 --- a/drivers/input/touchscreen/cyttsp4_core.c +++ b/drivers/input/touchscreen/cyttsp4_core.c @@ -871,7 +871,7 @@ static void cyttsp4_get_mt_touches(struct cyttsp4_mt_data *md, int num_cur_tch) struct cyttsp4_touch tch; int sig; int i, j, t = 0; - int ids[max(CY_TMA1036_MAX_TCH, CY_TMA4XX_MAX_TCH)]; + int ids[MAX(CY_TMA1036_MAX_TCH, CY_TMA4XX_MAX_TCH)]; memset(ids, 0, si->si_ofs.tch_abs[CY_TCH_T].max * sizeof(int)); for (i = 0; i < num_cur_tch; i++) { diff --git a/drivers/input/touchscreen/cyttsp_i2c_common.c b/drivers/input/touchscreen/cyttsp_i2c_common.c index 1f0b6d6f48e2..7e752fb9fad7 100644 --- a/drivers/input/touchscreen/cyttsp_i2c_common.c +++ b/drivers/input/touchscreen/cyttsp_i2c_common.c @@ -81,5 +81,6 @@ int cyttsp_i2c_write_block_data(struct device *dev, u8 *xfer_buf, EXPORT_SYMBOL_GPL(cyttsp_i2c_write_block_data); +MODULE_DESCRIPTION("Cypress TrueTouch(TM) Standard Product (TTSP) I2C touchscreen driver"); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Cypress"); diff --git a/drivers/input/touchscreen/da9052_tsi.c b/drivers/input/touchscreen/da9052_tsi.c index d71690ce6463..52e0e834e76f 100644 --- a/drivers/input/touchscreen/da9052_tsi.c +++ b/drivers/input/touchscreen/da9052_tsi.c @@ -232,7 +232,7 @@ static int da9052_ts_probe(struct platform_device *pdev) if (!da9052) return -EINVAL; - tsi = kzalloc(sizeof(struct da9052_tsi), GFP_KERNEL); + tsi = kzalloc(sizeof(*tsi), GFP_KERNEL); input_dev = input_allocate_device(); if (!tsi || !input_dev) { error = -ENOMEM; diff --git a/drivers/input/touchscreen/dynapro.c b/drivers/input/touchscreen/dynapro.c index dc07fca7c5ed..fe626a226b85 100644 --- a/drivers/input/touchscreen/dynapro.c +++ b/drivers/input/touchscreen/dynapro.c @@ -110,7 +110,7 @@ static int dynapro_connect(struct serio *serio, struct serio_driver *drv) struct input_dev *input_dev; int err; - pdynapro = kzalloc(sizeof(struct dynapro), GFP_KERNEL); + pdynapro = kzalloc(sizeof(*pdynapro), GFP_KERNEL); input_dev = input_allocate_device(); if (!pdynapro || !input_dev) { err = -ENOMEM; diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c index 06ec0f2e18ae..42f99e57fbb7 100644 --- a/drivers/input/touchscreen/edt-ft5x06.c +++ b/drivers/input/touchscreen/edt-ft5x06.c @@ -1496,6 +1496,7 @@ static const struct of_device_id edt_ft5x06_of_match[] = { { .compatible = "edt,edt-ft5406", .data = &edt_ft5x06_data }, { .compatible = "edt,edt-ft5506", .data = &edt_ft5506_data }, { .compatible = "evervision,ev-ft5726", .data = &edt_ft5506_data }, + { .compatible = "focaltech,ft5426", .data = &edt_ft5506_data }, { .compatible = "focaltech,ft5452", .data = &edt_ft5452_data }, /* Note focaltech vendor prefix for compatibility with ft6236.c */ { .compatible = "focaltech,ft6236", .data = &edt_ft6236_data }, diff --git a/drivers/input/touchscreen/egalax_ts_serial.c b/drivers/input/touchscreen/egalax_ts_serial.c index 375922d3a6d1..07a4aa1c19bb 100644 --- a/drivers/input/touchscreen/egalax_ts_serial.c +++ b/drivers/input/touchscreen/egalax_ts_serial.c @@ -99,7 +99,7 @@ static int egalax_connect(struct serio *serio, struct serio_driver *drv) struct input_dev *input_dev; int error; - egalax = kzalloc(sizeof(struct egalax), GFP_KERNEL); + egalax = kzalloc(sizeof(*egalax), GFP_KERNEL); input_dev = input_allocate_device(); if (!egalax || !input_dev) { error = -ENOMEM; diff --git a/drivers/input/touchscreen/ektf2127.c b/drivers/input/touchscreen/ektf2127.c index ab8159e1c99d..46a0611fac82 100644 --- a/drivers/input/touchscreen/ektf2127.c +++ b/drivers/input/touchscreen/ektf2127.c @@ -13,6 +13,7 @@ * Hans de Goede <hdegoede@redhat.com> */ +#include <linux/bits.h> #include <linux/gpio/consumer.h> #include <linux/interrupt.h> #include <linux/i2c.h> @@ -46,6 +47,11 @@ struct ektf2127_ts { struct input_dev *input; struct gpio_desc *power_gpios; struct touchscreen_properties prop; + int status_shift; +}; + +struct ektf2127_i2c_chip_data { + int status_shift; }; static void ektf2127_parse_coordinates(const u8 *buf, unsigned int touch_count, @@ -112,8 +118,8 @@ static void ektf2127_report2_contact(struct ektf2127_ts *ts, int slot, static void ektf2127_report2_event(struct ektf2127_ts *ts, const u8 *buf) { - ektf2127_report2_contact(ts, 0, &buf[1], !!(buf[7] & 2)); - ektf2127_report2_contact(ts, 1, &buf[4], !!(buf[7] & 4)); + ektf2127_report2_contact(ts, 0, &buf[1], !!(buf[7] & BIT(ts->status_shift))); + ektf2127_report2_contact(ts, 1, &buf[4], !!(buf[7] & BIT(ts->status_shift + 1))); input_mt_sync_frame(ts->input); input_sync(ts->input); @@ -247,6 +253,7 @@ static int ektf2127_query_dimension(struct i2c_client *client, bool width) static int ektf2127_probe(struct i2c_client *client) { struct device *dev = &client->dev; + const struct ektf2127_i2c_chip_data *chip_data; struct ektf2127_ts *ts; struct input_dev *input; u8 buf[4]; @@ -303,6 +310,13 @@ static int ektf2127_probe(struct i2c_client *client) return error; ts->input = input; + + chip_data = i2c_get_match_data(client); + if (!chip_data) + return dev_err_probe(&client->dev, -EINVAL, "missing chip data\n"); + + ts->status_shift = chip_data->status_shift; + input_set_drvdata(input, ts); error = devm_request_threaded_irq(dev, client->irq, @@ -325,18 +339,28 @@ static int ektf2127_probe(struct i2c_client *client) return 0; } +static const struct ektf2127_i2c_chip_data ektf2127_data = { + .status_shift = 1, +}; + +static const struct ektf2127_i2c_chip_data ektf2232_data = { + .status_shift = 0, +}; + #ifdef CONFIG_OF static const struct of_device_id ektf2127_of_match[] = { - { .compatible = "elan,ektf2127" }, - { .compatible = "elan,ektf2132" }, + { .compatible = "elan,ektf2127", .data = &ektf2127_data}, + { .compatible = "elan,ektf2132", .data = &ektf2127_data}, + { .compatible = "elan,ektf2232", .data = &ektf2232_data}, {} }; MODULE_DEVICE_TABLE(of, ektf2127_of_match); #endif static const struct i2c_device_id ektf2127_i2c_id[] = { - { "ektf2127" }, - { "ektf2132" }, + { .name = "ektf2127", .driver_data = (long)&ektf2127_data }, + { .name = "ektf2132", .driver_data = (long)&ektf2127_data }, + { .name = "ektf2232", .driver_data = (long)&ektf2232_data }, {} }; MODULE_DEVICE_TABLE(i2c, ektf2127_i2c_id); diff --git a/drivers/input/touchscreen/elo.c b/drivers/input/touchscreen/elo.c index 96173232e53f..eb883db55420 100644 --- a/drivers/input/touchscreen/elo.c +++ b/drivers/input/touchscreen/elo.c @@ -307,7 +307,7 @@ static int elo_connect(struct serio *serio, struct serio_driver *drv) struct input_dev *input_dev; int err; - elo = kzalloc(sizeof(struct elo), GFP_KERNEL); + elo = kzalloc(sizeof(*elo), GFP_KERNEL); input_dev = input_allocate_device(); if (!elo || !input_dev) { err = -ENOMEM; diff --git a/drivers/input/touchscreen/exc3000.c b/drivers/input/touchscreen/exc3000.c index a4030cc9ff60..2e77cfb63f32 100644 --- a/drivers/input/touchscreen/exc3000.c +++ b/drivers/input/touchscreen/exc3000.c @@ -53,6 +53,7 @@ enum eeti_dev_id { EETI_EXC3000, EETI_EXC80H60, EETI_EXC80H84, + EETI_EXC81W32, }; static struct eeti_dev_info exc3000_info[] = { @@ -68,6 +69,10 @@ static struct eeti_dev_info exc3000_info[] = { .name = "EETI EXC80H84 Touch Screen", .max_xy = SZ_16K - 1, }, + [EETI_EXC81W32] = { + .name = "EETI EXC81W32 Touch Screen", + .max_xy = SZ_16K - 1, + }, }; struct exc3000_data { @@ -441,6 +446,7 @@ static const struct i2c_device_id exc3000_id[] = { { "exc3000", EETI_EXC3000 }, { "exc80h60", EETI_EXC80H60 }, { "exc80h84", EETI_EXC80H84 }, + { "exc81w32", EETI_EXC81W32 }, { } }; MODULE_DEVICE_TABLE(i2c, exc3000_id); @@ -450,6 +456,7 @@ static const struct of_device_id exc3000_of_match[] = { { .compatible = "eeti,exc3000", .data = &exc3000_info[EETI_EXC3000] }, { .compatible = "eeti,exc80h60", .data = &exc3000_info[EETI_EXC80H60] }, { .compatible = "eeti,exc80h84", .data = &exc3000_info[EETI_EXC80H84] }, + { .compatible = "eeti,exc81w32", .data = &exc3000_info[EETI_EXC81W32] }, { } }; MODULE_DEVICE_TABLE(of, exc3000_of_match); diff --git a/drivers/input/touchscreen/fsl-imx25-tcq.c b/drivers/input/touchscreen/fsl-imx25-tcq.c index 60a7246c5157..a32708652d10 100644 --- a/drivers/input/touchscreen/fsl-imx25-tcq.c +++ b/drivers/input/touchscreen/fsl-imx25-tcq.c @@ -38,7 +38,7 @@ struct mx25_tcq_priv { struct device *dev; }; -static struct regmap_config mx25_tcq_regconfig = { +static const struct regmap_config mx25_tcq_regconfig = { .fast_io = true, .max_register = 0x5c, .reg_bits = 32, diff --git a/drivers/input/touchscreen/fujitsu_ts.c b/drivers/input/touchscreen/fujitsu_ts.c index 3b0b8fccc3f0..1a3e14ea2e08 100644 --- a/drivers/input/touchscreen/fujitsu_ts.c +++ b/drivers/input/touchscreen/fujitsu_ts.c @@ -99,7 +99,7 @@ static int fujitsu_connect(struct serio *serio, struct serio_driver *drv) struct input_dev *input_dev; int err; - fujitsu = kzalloc(sizeof(struct fujitsu), GFP_KERNEL); + fujitsu = kzalloc(sizeof(*fujitsu), GFP_KERNEL); input_dev = input_allocate_device(); if (!fujitsu || !input_dev) { err = -ENOMEM; diff --git a/drivers/input/touchscreen/goodix_berlin_spi.c b/drivers/input/touchscreen/goodix_berlin_spi.c index 4cc557da048a..82774a412956 100644 --- a/drivers/input/touchscreen/goodix_berlin_spi.c +++ b/drivers/input/touchscreen/goodix_berlin_spi.c @@ -36,13 +36,14 @@ static int goodix_berlin_spi_read(void *context, const void *reg_buf, struct spi_transfer xfers; struct spi_message spi_msg; const u32 *reg = reg_buf; /* reg is stored as native u32 at start of buffer */ - u8 *buf; int error; if (reg_size != GOODIX_BERLIN_REGISTER_WIDTH) return -EINVAL; - buf = kzalloc(GOODIX_BERLIN_SPI_READ_PREFIX_LEN + val_size, GFP_KERNEL); + u8 *buf __free(kfree) = + kzalloc(GOODIX_BERLIN_SPI_READ_PREFIX_LEN + val_size, + GFP_KERNEL); if (!buf) return -ENOMEM; @@ -62,12 +63,12 @@ static int goodix_berlin_spi_read(void *context, const void *reg_buf, spi_message_add_tail(&xfers, &spi_msg); error = spi_sync(spi, &spi_msg); - if (error < 0) + if (error < 0) { dev_err(&spi->dev, "spi transfer error, %d", error); - else - memcpy(val_buf, buf + GOODIX_BERLIN_SPI_READ_PREFIX_LEN, val_size); + return error; + } - kfree(buf); + memcpy(val_buf, buf + GOODIX_BERLIN_SPI_READ_PREFIX_LEN, val_size); return error; } @@ -79,10 +80,10 @@ static int goodix_berlin_spi_write(void *context, const void *data, struct spi_transfer xfers; struct spi_message spi_msg; const u32 *reg = data; /* reg is stored as native u32 at start of buffer */ - u8 *buf; int error; - buf = kzalloc(GOODIX_BERLIN_SPI_WRITE_PREFIX_LEN + len, GFP_KERNEL); + u8 *buf __free(kfree) = + kzalloc(GOODIX_BERLIN_SPI_WRITE_PREFIX_LEN + len, GFP_KERNEL); if (!buf) return -ENOMEM; @@ -100,11 +101,12 @@ static int goodix_berlin_spi_write(void *context, const void *data, spi_message_add_tail(&xfers, &spi_msg); error = spi_sync(spi, &spi_msg); - if (error < 0) + if (error < 0) { dev_err(&spi->dev, "spi transfer error, %d", error); + return error; + } - kfree(buf); - return error; + return 0; } static const struct regmap_config goodix_berlin_spi_regmap_conf = { diff --git a/drivers/input/touchscreen/gunze.c b/drivers/input/touchscreen/gunze.c index 5a5f9da73fa1..dbf92fb02f80 100644 --- a/drivers/input/touchscreen/gunze.c +++ b/drivers/input/touchscreen/gunze.c @@ -97,7 +97,7 @@ static int gunze_connect(struct serio *serio, struct serio_driver *drv) struct input_dev *input_dev; int err; - gunze = kzalloc(sizeof(struct gunze), GFP_KERNEL); + gunze = kzalloc(sizeof(*gunze), GFP_KERNEL); input_dev = input_allocate_device(); if (!gunze || !input_dev) { err = -ENOMEM; diff --git a/drivers/input/touchscreen/hampshire.c b/drivers/input/touchscreen/hampshire.c index 5c4d877564ee..dc0a2482ddd6 100644 --- a/drivers/input/touchscreen/hampshire.c +++ b/drivers/input/touchscreen/hampshire.c @@ -109,7 +109,7 @@ static int hampshire_connect(struct serio *serio, struct serio_driver *drv) struct input_dev *input_dev; int err; - phampshire = kzalloc(sizeof(struct hampshire), GFP_KERNEL); + phampshire = kzalloc(sizeof(*phampshire), GFP_KERNEL); input_dev = input_allocate_device(); if (!phampshire || !input_dev) { err = -ENOMEM; diff --git a/drivers/input/touchscreen/himax_hx83112b.c b/drivers/input/touchscreen/himax_hx83112b.c index bafabd06dabc..9ed3bccde4ac 100644 --- a/drivers/input/touchscreen/himax_hx83112b.c +++ b/drivers/input/touchscreen/himax_hx83112b.c @@ -4,6 +4,9 @@ * * Copyright (C) 2022 Job Noorman <job@noorman.info> * + * HX83100A support + * Copyright (C) 2024 Felix Kaechele <felix@kaechele.ca> + * * This code is based on "Himax Android Driver Sample Code for QCT platform": * * Copyright (C) 2017 Himax Corporation. @@ -20,16 +23,22 @@ #include <linux/kernel.h> #include <linux/regmap.h> -#define HIMAX_ID_83112B 0x83112b - #define HIMAX_MAX_POINTS 10 -#define HIMAX_REG_CFG_SET_ADDR 0x00 -#define HIMAX_REG_CFG_INIT_READ 0x0c -#define HIMAX_REG_CFG_READ_VALUE 0x08 -#define HIMAX_REG_READ_EVENT 0x30 +#define HIMAX_AHB_ADDR_BYTE_0 0x00 +#define HIMAX_AHB_ADDR_RDATA_BYTE_0 0x08 +#define HIMAX_AHB_ADDR_ACCESS_DIRECTION 0x0c +#define HIMAX_AHB_ADDR_INCR4 0x0d +#define HIMAX_AHB_ADDR_CONTI 0x13 +#define HIMAX_AHB_ADDR_EVENT_STACK 0x30 + +#define HIMAX_AHB_CMD_ACCESS_DIRECTION_READ 0x00 +#define HIMAX_AHB_CMD_INCR4 0x10 +#define HIMAX_AHB_CMD_CONTI 0x31 -#define HIMAX_CFG_PRODUCT_ID 0x900000d0 +#define HIMAX_REG_ADDR_ICID 0x900000d0 + +#define HX83100A_REG_FW_EVENT_STACK 0x90060000 #define HIMAX_INVALID_COORD 0xffff @@ -49,7 +58,16 @@ struct himax_event { static_assert(sizeof(struct himax_event) == 56); +struct himax_ts_data; +struct himax_chip { + u32 id; + int (*check_id)(struct himax_ts_data *ts); + int (*read_events)(struct himax_ts_data *ts, struct himax_event *event, + size_t length); +}; + struct himax_ts_data { + const struct himax_chip *chip; struct gpio_desc *gpiod_rst; struct input_dev *input_dev; struct i2c_client *client; @@ -63,19 +81,60 @@ static const struct regmap_config himax_regmap_config = { .val_format_endian = REGMAP_ENDIAN_LITTLE, }; -static int himax_read_config(struct himax_ts_data *ts, u32 address, u32 *dst) +static int himax_bus_enable_burst(struct himax_ts_data *ts) { int error; - error = regmap_write(ts->regmap, HIMAX_REG_CFG_SET_ADDR, address); + error = regmap_write(ts->regmap, HIMAX_AHB_ADDR_CONTI, + HIMAX_AHB_CMD_CONTI); if (error) return error; - error = regmap_write(ts->regmap, HIMAX_REG_CFG_INIT_READ, 0x0); + error = regmap_write(ts->regmap, HIMAX_AHB_ADDR_INCR4, + HIMAX_AHB_CMD_INCR4); if (error) return error; - error = regmap_read(ts->regmap, HIMAX_REG_CFG_READ_VALUE, dst); + return 0; +} + +static int himax_bus_read(struct himax_ts_data *ts, u32 address, void *dst, + size_t length) +{ + int error; + + if (length > 4) { + error = himax_bus_enable_burst(ts); + if (error) + return error; + } + + error = regmap_write(ts->regmap, HIMAX_AHB_ADDR_BYTE_0, address); + if (error) + return error; + + error = regmap_write(ts->regmap, HIMAX_AHB_ADDR_ACCESS_DIRECTION, + HIMAX_AHB_CMD_ACCESS_DIRECTION_READ); + if (error) + return error; + + if (length > 4) + error = regmap_noinc_read(ts->regmap, HIMAX_AHB_ADDR_RDATA_BYTE_0, + dst, length); + else + error = regmap_read(ts->regmap, HIMAX_AHB_ADDR_RDATA_BYTE_0, + dst); + if (error) + return error; + + return 0; +} + +static int himax_read_mcu(struct himax_ts_data *ts, u32 address, u32 *dst) +{ + int error; + + error = himax_bus_read(ts, address, dst, sizeof(dst)); if (error) return error; @@ -101,7 +160,7 @@ static int himax_read_product_id(struct himax_ts_data *ts, u32 *product_id) { int error; - error = himax_read_config(ts, HIMAX_CFG_PRODUCT_ID, product_id); + error = himax_read_mcu(ts, HIMAX_REG_ADDR_ICID, product_id); if (error) return error; @@ -120,15 +179,12 @@ static int himax_check_product_id(struct himax_ts_data *ts) dev_dbg(&ts->client->dev, "Product id: %x\n", product_id); - switch (product_id) { - case HIMAX_ID_83112B: + if (product_id == ts->chip->id) return 0; - default: - dev_err(&ts->client->dev, - "Unknown product id: %x\n", product_id); - return -EINVAL; - } + dev_err(&ts->client->dev, "Unknown product id: %x\n", + product_id); + return -EINVAL; } static int himax_input_register(struct himax_ts_data *ts) @@ -230,13 +286,25 @@ static bool himax_verify_checksum(struct himax_ts_data *ts, return true; } +static int himax_read_events(struct himax_ts_data *ts, + struct himax_event *event, size_t length) +{ + return regmap_raw_read(ts->regmap, HIMAX_AHB_ADDR_EVENT_STACK, event, + length); +} + +static int hx83100a_read_events(struct himax_ts_data *ts, + struct himax_event *event, size_t length) +{ + return himax_bus_read(ts, HX83100A_REG_FW_EVENT_STACK, event, length); +}; + static int himax_handle_input(struct himax_ts_data *ts) { int error; struct himax_event event; - error = regmap_raw_read(ts->regmap, HIMAX_REG_READ_EVENT, &event, - sizeof(event)); + error = ts->chip->read_events(ts, &event, sizeof(event)); if (error) { dev_err(&ts->client->dev, "Failed to read input event: %d\n", error); @@ -282,6 +350,7 @@ static int himax_probe(struct i2c_client *client) i2c_set_clientdata(client, ts); ts->client = client; + ts->chip = i2c_get_match_data(client); ts->regmap = devm_regmap_init_i2c(client, &himax_regmap_config); error = PTR_ERR_OR_ZERO(ts->regmap); @@ -299,9 +368,11 @@ static int himax_probe(struct i2c_client *client) himax_reset(ts); - error = himax_check_product_id(ts); - if (error) - return error; + if (ts->chip->check_id) { + error = himax_check_product_id(ts); + if (error) + return error; + } error = himax_input_register(ts); if (error) @@ -334,15 +405,27 @@ static int himax_resume(struct device *dev) static DEFINE_SIMPLE_DEV_PM_OPS(himax_pm_ops, himax_suspend, himax_resume); +static const struct himax_chip hx83100a_chip = { + .read_events = hx83100a_read_events, +}; + +static const struct himax_chip hx83112b_chip = { + .id = 0x83112b, + .check_id = himax_check_product_id, + .read_events = himax_read_events, +}; + static const struct i2c_device_id himax_ts_id[] = { - { "hx83112b" }, + { "hx83100a", (kernel_ulong_t)&hx83100a_chip }, + { "hx83112b", (kernel_ulong_t)&hx83112b_chip }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(i2c, himax_ts_id); #ifdef CONFIG_OF static const struct of_device_id himax_of_match[] = { - { .compatible = "himax,hx83112b" }, + { .compatible = "himax,hx83100a", .data = &hx83100a_chip }, + { .compatible = "himax,hx83112b", .data = &hx83112b_chip }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, himax_of_match); diff --git a/drivers/input/touchscreen/ili210x.c b/drivers/input/touchscreen/ili210x.c index 79bdb2b10949..4573844c3395 100644 --- a/drivers/input/touchscreen/ili210x.c +++ b/drivers/input/touchscreen/ili210x.c @@ -582,14 +582,12 @@ static ssize_t ili210x_calibrate(struct device *dev, } static DEVICE_ATTR(calibrate, S_IWUSR, NULL, ili210x_calibrate); -static int ili251x_firmware_to_buffer(const struct firmware *fw, - u8 **buf, u16 *ac_end, u16 *df_end) +static const u8 *ili251x_firmware_to_buffer(const struct firmware *fw, + u16 *ac_end, u16 *df_end) { const struct ihex_binrec *rec; u32 fw_addr, fw_last_addr = 0; u16 fw_len; - u8 *fw_buf; - int error; /* * The firmware ihex blob can never be bigger than 64 kiB, so make this @@ -597,9 +595,9 @@ static int ili251x_firmware_to_buffer(const struct firmware *fw, * once, copy them all into this buffer at the right locations, and then * do all operations on this linear buffer. */ - fw_buf = kzalloc(SZ_64K, GFP_KERNEL); + u8* fw_buf __free(kvfree) = kvmalloc(SZ_64K, GFP_KERNEL); if (!fw_buf) - return -ENOMEM; + return ERR_PTR(-ENOMEM); rec = (const struct ihex_binrec *)fw->data; while (rec) { @@ -607,10 +605,8 @@ static int ili251x_firmware_to_buffer(const struct firmware *fw, fw_len = be16_to_cpu(rec->len); /* The last 32 Byte firmware block can be 0xffe0 */ - if (fw_addr + fw_len > SZ_64K || fw_addr > SZ_64K - 32) { - error = -EFBIG; - goto err_big; - } + if (fw_addr + fw_len > SZ_64K || fw_addr > SZ_64K - 32) + return ERR_PTR(-EFBIG); /* Find the last address before DF start address, that is AC end */ if (fw_addr == 0xf000) @@ -623,12 +619,8 @@ static int ili251x_firmware_to_buffer(const struct firmware *fw, /* DF end address is the last address in the firmware blob */ *df_end = fw_addr + fw_len; - *buf = fw_buf; - return 0; -err_big: - kfree(fw_buf); - return error; + return_ptr(fw_buf); } /* Switch mode between Application and BootLoader */ @@ -691,7 +683,7 @@ static int ili251x_firmware_busy(struct i2c_client *client) return 0; } -static int ili251x_firmware_write_to_ic(struct device *dev, u8 *fwbuf, +static int ili251x_firmware_write_to_ic(struct device *dev, const u8 *fwbuf, u16 start, u16 end, u8 dataflash) { struct i2c_client *client = to_i2c_client(dev); @@ -776,47 +768,17 @@ static void ili210x_hardware_reset(struct gpio_desc *reset_gpio) msleep(300); } -static ssize_t ili210x_firmware_update_store(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) +static int ili210x_do_firmware_update(struct ili210x *priv, + const u8 *fwbuf, u16 ac_end, u16 df_end) { - struct i2c_client *client = to_i2c_client(dev); - struct ili210x *priv = i2c_get_clientdata(client); - const char *fwname = ILI251X_FW_FILENAME; - const struct firmware *fw; - u16 ac_end, df_end; - u8 *fwbuf; + struct i2c_client *client = priv->client; + struct device *dev = &client->dev; int error; int i; - error = request_ihex_firmware(&fw, fwname, dev); - if (error) { - dev_err(dev, "Failed to request firmware %s, error=%d\n", - fwname, error); - return error; - } - - error = ili251x_firmware_to_buffer(fw, &fwbuf, &ac_end, &df_end); - release_firmware(fw); - if (error) - return error; - - /* - * Disable touchscreen IRQ, so that we would not get spurious touch - * interrupt during firmware update, and so that the IRQ handler won't - * trigger and interfere with the firmware update. There is no bit in - * the touch controller to disable the IRQs during update, so we have - * to do it this way here. - */ - disable_irq(client->irq); - - dev_dbg(dev, "Firmware update started, firmware=%s\n", fwname); - - ili210x_hardware_reset(priv->reset_gpio); - error = ili251x_firmware_reset(client); if (error) - goto exit; + return error; /* This may not succeed on first try, so re-try a few times. */ for (i = 0; i < 5; i++) { @@ -826,7 +788,7 @@ static ssize_t ili210x_firmware_update_store(struct device *dev, } if (error) - goto exit; + return error; dev_dbg(dev, "IC is now in BootLoader mode\n"); @@ -835,7 +797,7 @@ static ssize_t ili210x_firmware_update_store(struct device *dev, error = ili251x_firmware_write_to_ic(dev, fwbuf, 0xf000, df_end, 1); if (error) { dev_err(dev, "DF firmware update failed, error=%d\n", error); - goto exit; + return error; } dev_dbg(dev, "DataFlash firmware written\n"); @@ -843,7 +805,7 @@ static ssize_t ili210x_firmware_update_store(struct device *dev, error = ili251x_firmware_write_to_ic(dev, fwbuf, 0x2000, ac_end, 0); if (error) { dev_err(dev, "AC firmware update failed, error=%d\n", error); - goto exit; + return error; } dev_dbg(dev, "Application firmware written\n"); @@ -856,22 +818,61 @@ static ssize_t ili210x_firmware_update_store(struct device *dev, } if (error) - goto exit; + return error; dev_dbg(dev, "IC is now in Application mode\n"); error = ili251x_firmware_update_cached_state(dev); if (error) - goto exit; + return error; - error = count; + return 0; +} -exit: - ili210x_hardware_reset(priv->reset_gpio); - dev_dbg(dev, "Firmware update ended, error=%i\n", error); - enable_irq(client->irq); - kfree(fwbuf); - return error; +static ssize_t ili210x_firmware_update_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct i2c_client *client = to_i2c_client(dev); + struct ili210x *priv = i2c_get_clientdata(client); + const char *fwname = ILI251X_FW_FILENAME; + u16 ac_end, df_end; + int error; + + const struct firmware *fw __free(firmware) = NULL; + error = request_ihex_firmware(&fw, fwname, dev); + if (error) { + dev_err(dev, "Failed to request firmware %s, error=%d\n", + fwname, error); + return error; + } + + const u8* fwbuf __free(kvfree) = + ili251x_firmware_to_buffer(fw, &ac_end, &df_end); + error = PTR_ERR_OR_ZERO(fwbuf); + if (error) + return error; + + /* + * Disable touchscreen IRQ, so that we would not get spurious touch + * interrupt during firmware update, and so that the IRQ handler won't + * trigger and interfere with the firmware update. There is no bit in + * the touch controller to disable the IRQs during update, so we have + * to do it this way here. + */ + scoped_guard(disable_irq, &client->irq) { + dev_dbg(dev, "Firmware update started, firmware=%s\n", fwname); + + ili210x_hardware_reset(priv->reset_gpio); + + error = ili210x_do_firmware_update(priv, fwbuf, ac_end, df_end); + + ili210x_hardware_reset(priv->reset_gpio); + + dev_dbg(dev, "Firmware update ended, error=%i\n", error); + } + + return error ?: count; } static DEVICE_ATTR(firmware_update, 0200, NULL, ili210x_firmware_update_store); diff --git a/drivers/input/touchscreen/imagis.c b/drivers/input/touchscreen/imagis.c index 074dd6c342ec..aeabf8d057de 100644 --- a/drivers/input/touchscreen/imagis.c +++ b/drivers/input/touchscreen/imagis.c @@ -12,9 +12,17 @@ #include <linux/property.h> #include <linux/regulator/consumer.h> +#define IST30XX_REG_STATUS 0x20 +#define IST30XX_REG_CHIPID (0x40000000 | IST3038C_DIRECT_ACCESS) + +#define IST30XX_WHOAMI 0x30003000 +#define IST30XXA_WHOAMI 0x300a300a +#define IST30XXB_WHOAMI 0x300b300b +#define IST3038_WHOAMI 0x30383038 + #define IST3032C_WHOAMI 0x32c +#define IST3038C_WHOAMI 0x38c -#define IST3038B_REG_STATUS 0x20 #define IST3038B_REG_CHIPID 0x30 #define IST3038B_WHOAMI 0x30380b @@ -25,7 +33,6 @@ #define IST3038C_REG_TOUCH_STATUS (IST3038C_REG_HIB_BASE | IST3038C_HIB_ACCESS) #define IST3038C_REG_TOUCH_COORD (IST3038C_REG_HIB_BASE | IST3038C_HIB_ACCESS | 0x8) #define IST3038C_REG_INTR_MESSAGE (IST3038C_REG_HIB_BASE | IST3038C_HIB_ACCESS | 0x4) -#define IST3038C_WHOAMI 0x38c #define IST3038C_CHIP_ON_DELAY_MS 60 #define IST3038C_I2C_RETRY_COUNT 3 #define IST3038C_MAX_FINGER_NUM 10 @@ -121,11 +128,11 @@ static irqreturn_t imagis_interrupt(int irq, void *dev_id) for (i = 0; i < finger_count; i++) { if (ts->tdata->protocol_b) error = imagis_i2c_read_reg(ts, - ts->tdata->touch_coord_cmd, &finger_status); - else - error = imagis_i2c_read_reg(ts, ts->tdata->touch_coord_cmd + (i * 4), &finger_status); + else + error = imagis_i2c_read_reg(ts, + ts->tdata->touch_coord_cmd, &finger_status); if (error) { dev_err(&ts->client->dev, "failed to read coordinates for finger %d: %d\n", @@ -394,14 +401,22 @@ static const struct imagis_properties imagis_3032c_data = { .whoami_cmd = IST3038C_REG_CHIPID, .whoami_val = IST3032C_WHOAMI, .touch_keys_supported = true, + .protocol_b = true, +}; + +static const struct imagis_properties imagis_3038_data = { + .interrupt_msg_cmd = IST30XX_REG_STATUS, + .touch_coord_cmd = IST30XX_REG_STATUS, + .whoami_cmd = IST30XX_REG_CHIPID, + .whoami_val = IST3038_WHOAMI, + .touch_keys_supported = true, }; static const struct imagis_properties imagis_3038b_data = { - .interrupt_msg_cmd = IST3038B_REG_STATUS, - .touch_coord_cmd = IST3038B_REG_STATUS, + .interrupt_msg_cmd = IST30XX_REG_STATUS, + .touch_coord_cmd = IST30XX_REG_STATUS, .whoami_cmd = IST3038B_REG_CHIPID, .whoami_val = IST3038B_WHOAMI, - .protocol_b = true, }; static const struct imagis_properties imagis_3038c_data = { @@ -409,11 +424,13 @@ static const struct imagis_properties imagis_3038c_data = { .touch_coord_cmd = IST3038C_REG_TOUCH_COORD, .whoami_cmd = IST3038C_REG_CHIPID, .whoami_val = IST3038C_WHOAMI, + .protocol_b = true, }; #ifdef CONFIG_OF static const struct of_device_id imagis_of_match[] = { { .compatible = "imagis,ist3032c", .data = &imagis_3032c_data }, + { .compatible = "imagis,ist3038", .data = &imagis_3038_data }, { .compatible = "imagis,ist3038b", .data = &imagis_3038b_data }, { .compatible = "imagis,ist3038c", .data = &imagis_3038c_data }, { }, diff --git a/drivers/input/touchscreen/inexio.c b/drivers/input/touchscreen/inexio.c index 1d7e4c3966ce..82f7ac62a4f2 100644 --- a/drivers/input/touchscreen/inexio.c +++ b/drivers/input/touchscreen/inexio.c @@ -114,7 +114,7 @@ static int inexio_connect(struct serio *serio, struct serio_driver *drv) struct input_dev *input_dev; int err; - pinexio = kzalloc(sizeof(struct inexio), GFP_KERNEL); + pinexio = kzalloc(sizeof(*pinexio), GFP_KERNEL); input_dev = input_allocate_device(); if (!pinexio || !input_dev) { err = -ENOMEM; diff --git a/drivers/input/touchscreen/mtouch.c b/drivers/input/touchscreen/mtouch.c index 28e449eea318..eefae96a2d40 100644 --- a/drivers/input/touchscreen/mtouch.c +++ b/drivers/input/touchscreen/mtouch.c @@ -128,7 +128,7 @@ static int mtouch_connect(struct serio *serio, struct serio_driver *drv) struct input_dev *input_dev; int err; - mtouch = kzalloc(sizeof(struct mtouch), GFP_KERNEL); + mtouch = kzalloc(sizeof(*mtouch), GFP_KERNEL); input_dev = input_allocate_device(); if (!mtouch || !input_dev) { err = -ENOMEM; diff --git a/drivers/input/touchscreen/penmount.c b/drivers/input/touchscreen/penmount.c index 12abb3b36128..95adede26703 100644 --- a/drivers/input/touchscreen/penmount.c +++ b/drivers/input/touchscreen/penmount.c @@ -199,7 +199,7 @@ static int pm_connect(struct serio *serio, struct serio_driver *drv) int max_x, max_y; int err; - pm = kzalloc(sizeof(struct pm), GFP_KERNEL); + pm = kzalloc(sizeof(*pm), GFP_KERNEL); input_dev = input_allocate_device(); if (!pm || !input_dev) { err = -ENOMEM; diff --git a/drivers/input/touchscreen/rohm_bu21023.c b/drivers/input/touchscreen/rohm_bu21023.c index 06fa3a19d266..0e5cc9fbad17 100644 --- a/drivers/input/touchscreen/rohm_bu21023.c +++ b/drivers/input/touchscreen/rohm_bu21023.c @@ -643,12 +643,12 @@ static int rohm_ts_load_firmware(struct i2c_client *client, const char *firmware_name) { struct device *dev = &client->dev; - const struct firmware *fw; s32 status; unsigned int offset, len, xfer_len; unsigned int retry = 0; int error, error2; + const struct firmware *fw __free(firmware) = NULL; error = request_firmware(&fw, firmware_name, dev); if (error) { dev_err(dev, "unable to retrieve firmware %s: %d\n", @@ -722,18 +722,39 @@ static int rohm_ts_load_firmware(struct i2c_client *client, out: error2 = i2c_smbus_write_byte_data(client, INT_MASK, INT_ALL); - release_firmware(fw); - return error ? error : error2; } +static int rohm_ts_update_setting(struct rohm_ts_data *ts, + unsigned int setting_bit, bool on) +{ + int error; + + scoped_cond_guard(mutex_intr, return -EINTR, &ts->input->mutex) { + if (on) + ts->setup2 |= setting_bit; + else + ts->setup2 &= ~setting_bit; + + if (ts->initialized) { + error = i2c_smbus_write_byte_data(ts->client, + COMMON_SETUP2, + ts->setup2); + if (error) + return error; + } + } + + return 0; +} + static ssize_t swap_xy_show(struct device *dev, struct device_attribute *attr, char *buf) { struct i2c_client *client = to_i2c_client(dev); struct rohm_ts_data *ts = i2c_get_clientdata(client); - return sprintf(buf, "%d\n", !!(ts->setup2 & SWAP_XY)); + return sysfs_emit(buf, "%d\n", !!(ts->setup2 & SWAP_XY)); } static ssize_t swap_xy_store(struct device *dev, struct device_attribute *attr, @@ -748,22 +769,8 @@ static ssize_t swap_xy_store(struct device *dev, struct device_attribute *attr, if (error) return error; - error = mutex_lock_interruptible(&ts->input->mutex); - if (error) - return error; - - if (val) - ts->setup2 |= SWAP_XY; - else - ts->setup2 &= ~SWAP_XY; - - if (ts->initialized) - error = i2c_smbus_write_byte_data(ts->client, COMMON_SETUP2, - ts->setup2); - - mutex_unlock(&ts->input->mutex); - - return error ? error : count; + error = rohm_ts_update_setting(ts, SWAP_XY, val); + return error ?: count; } static ssize_t inv_x_show(struct device *dev, struct device_attribute *attr, @@ -772,7 +779,7 @@ static ssize_t inv_x_show(struct device *dev, struct device_attribute *attr, struct i2c_client *client = to_i2c_client(dev); struct rohm_ts_data *ts = i2c_get_clientdata(client); - return sprintf(buf, "%d\n", !!(ts->setup2 & INV_X)); + return sysfs_emit(buf, "%d\n", !!(ts->setup2 & INV_X)); } static ssize_t inv_x_store(struct device *dev, struct device_attribute *attr, @@ -787,22 +794,8 @@ static ssize_t inv_x_store(struct device *dev, struct device_attribute *attr, if (error) return error; - error = mutex_lock_interruptible(&ts->input->mutex); - if (error) - return error; - - if (val) - ts->setup2 |= INV_X; - else - ts->setup2 &= ~INV_X; - - if (ts->initialized) - error = i2c_smbus_write_byte_data(ts->client, COMMON_SETUP2, - ts->setup2); - - mutex_unlock(&ts->input->mutex); - - return error ? error : count; + error = rohm_ts_update_setting(ts, INV_X, val); + return error ?: count; } static ssize_t inv_y_show(struct device *dev, struct device_attribute *attr, @@ -811,7 +804,7 @@ static ssize_t inv_y_show(struct device *dev, struct device_attribute *attr, struct i2c_client *client = to_i2c_client(dev); struct rohm_ts_data *ts = i2c_get_clientdata(client); - return sprintf(buf, "%d\n", !!(ts->setup2 & INV_Y)); + return sysfs_emit(buf, "%d\n", !!(ts->setup2 & INV_Y)); } static ssize_t inv_y_store(struct device *dev, struct device_attribute *attr, @@ -826,22 +819,8 @@ static ssize_t inv_y_store(struct device *dev, struct device_attribute *attr, if (error) return error; - error = mutex_lock_interruptible(&ts->input->mutex); - if (error) - return error; - - if (val) - ts->setup2 |= INV_Y; - else - ts->setup2 &= ~INV_Y; - - if (ts->initialized) - error = i2c_smbus_write_byte_data(client, COMMON_SETUP2, - ts->setup2); - - mutex_unlock(&ts->input->mutex); - - return error ? error : count; + error = rohm_ts_update_setting(ts, INV_Y, val); + return error ?: count; } static DEVICE_ATTR_RW(swap_xy); @@ -861,7 +840,7 @@ static int rohm_ts_device_init(struct i2c_client *client, u8 setup2) struct device *dev = &client->dev; int error; - disable_irq(client->irq); + guard(disable_irq)(&client->irq); /* * Wait 200usec for reset @@ -1036,10 +1015,10 @@ static int rohm_ts_device_init(struct i2c_client *client, u8 setup2) /* controller CPU power on */ error = i2c_smbus_write_byte_data(client, SYSTEM, ANALOG_POWER_ON | CPU_POWER_ON); + if (error) + return error; - enable_irq(client->irq); - - return error; + return 0; } static int rohm_ts_power_off(struct i2c_client *client) diff --git a/drivers/input/touchscreen/sur40.c b/drivers/input/touchscreen/sur40.c index 5f2cf8881e72..8365a2ac6fce 100644 --- a/drivers/input/touchscreen/sur40.c +++ b/drivers/input/touchscreen/sur40.c @@ -672,7 +672,7 @@ static int sur40_probe(struct usb_interface *interface, return -ENODEV; /* Allocate memory for our device state and initialize it. */ - sur40 = kzalloc(sizeof(struct sur40_state), GFP_KERNEL); + sur40 = kzalloc(sizeof(*sur40), GFP_KERNEL); if (!sur40) return -ENOMEM; diff --git a/drivers/input/touchscreen/touchit213.c b/drivers/input/touchscreen/touchit213.c index fb49687da405..c2718350815c 100644 --- a/drivers/input/touchscreen/touchit213.c +++ b/drivers/input/touchscreen/touchit213.c @@ -139,7 +139,7 @@ static int touchit213_connect(struct serio *serio, struct serio_driver *drv) struct input_dev *input_dev; int err; - touchit213 = kzalloc(sizeof(struct touchit213), GFP_KERNEL); + touchit213 = kzalloc(sizeof(*touchit213), GFP_KERNEL); input_dev = input_allocate_device(); if (!touchit213 || !input_dev) { err = -ENOMEM; diff --git a/drivers/input/touchscreen/touchright.c b/drivers/input/touchscreen/touchright.c index 3cd58a13e44f..30ba97bd00a1 100644 --- a/drivers/input/touchscreen/touchright.c +++ b/drivers/input/touchscreen/touchright.c @@ -102,7 +102,7 @@ static int tr_connect(struct serio *serio, struct serio_driver *drv) struct input_dev *input_dev; int err; - tr = kzalloc(sizeof(struct tr), GFP_KERNEL); + tr = kzalloc(sizeof(*tr), GFP_KERNEL); input_dev = input_allocate_device(); if (!tr || !input_dev) { err = -ENOMEM; diff --git a/drivers/input/touchscreen/touchwin.c b/drivers/input/touchscreen/touchwin.c index bde3c6ee3c60..fbd72789ea80 100644 --- a/drivers/input/touchscreen/touchwin.c +++ b/drivers/input/touchscreen/touchwin.c @@ -109,7 +109,7 @@ static int tw_connect(struct serio *serio, struct serio_driver *drv) struct input_dev *input_dev; int err; - tw = kzalloc(sizeof(struct tw), GFP_KERNEL); + tw = kzalloc(sizeof(*tw), GFP_KERNEL); input_dev = input_allocate_device(); if (!tw || !input_dev) { err = -ENOMEM; diff --git a/drivers/input/touchscreen/tsc40.c b/drivers/input/touchscreen/tsc40.c index 139577021413..9f485cf57a72 100644 --- a/drivers/input/touchscreen/tsc40.c +++ b/drivers/input/touchscreen/tsc40.c @@ -83,7 +83,7 @@ static int tsc_connect(struct serio *serio, struct serio_driver *drv) struct input_dev *input_dev; int error; - ptsc = kzalloc(sizeof(struct tsc_ser), GFP_KERNEL); + ptsc = kzalloc(sizeof(*ptsc), GFP_KERNEL); input_dev = input_allocate_device(); if (!ptsc || !input_dev) { error = -ENOMEM; diff --git a/drivers/input/touchscreen/usbtouchscreen.c b/drivers/input/touchscreen/usbtouchscreen.c index 60354ebc7242..dd6b12c6dc58 100644 --- a/drivers/input/touchscreen/usbtouchscreen.c +++ b/drivers/input/touchscreen/usbtouchscreen.c @@ -505,12 +505,14 @@ free: static int mtouch_alloc(struct usbtouch_usb *usbtouch) { + struct mtouch_priv *priv; int ret; - usbtouch->priv = kmalloc(sizeof(struct mtouch_priv), GFP_KERNEL); - if (!usbtouch->priv) + priv = kmalloc(sizeof(*priv), GFP_KERNEL); + if (!priv) return -ENOMEM; + usbtouch->priv = priv; ret = sysfs_create_group(&usbtouch->interface->dev.kobj, &mtouch_attr_group); if (ret) { @@ -924,12 +926,11 @@ static int nexio_alloc(struct usbtouch_usb *usbtouch) struct nexio_priv *priv; int ret = -ENOMEM; - usbtouch->priv = kmalloc(sizeof(struct nexio_priv), GFP_KERNEL); - if (!usbtouch->priv) + priv = kmalloc(sizeof(*priv), GFP_KERNEL); + if (!priv) goto out_buf; - priv = usbtouch->priv; - + usbtouch->priv = priv; priv->ack_buf = kmemdup(nexio_ack_pkt, sizeof(nexio_ack_pkt), GFP_KERNEL); if (!priv->ack_buf) @@ -1661,7 +1662,7 @@ static int usbtouch_probe(struct usb_interface *intf, if (!endpoint) return -ENXIO; - usbtouch = kzalloc(sizeof(struct usbtouch_usb), GFP_KERNEL); + usbtouch = kzalloc(sizeof(*usbtouch), GFP_KERNEL); input_dev = input_allocate_device(); if (!usbtouch || !input_dev) goto out_free; diff --git a/drivers/input/touchscreen/wacom_w8001.c b/drivers/input/touchscreen/wacom_w8001.c index 928c5ee3ac36..ed2ca8a689d5 100644 --- a/drivers/input/touchscreen/wacom_w8001.c +++ b/drivers/input/touchscreen/wacom_w8001.c @@ -380,30 +380,28 @@ static int w8001_open(struct input_dev *dev) struct w8001 *w8001 = input_get_drvdata(dev); int err; - err = mutex_lock_interruptible(&w8001->mutex); - if (err) - return err; + scoped_guard(mutex_intr, &w8001->mutex) { + if (w8001->open_count == 0) { + err = w8001_command(w8001, W8001_CMD_START, false); + if (err) + return err; + } - if (w8001->open_count++ == 0) { - err = w8001_command(w8001, W8001_CMD_START, false); - if (err) - w8001->open_count--; + w8001->open_count++; + return 0; } - mutex_unlock(&w8001->mutex); - return err; + return -EINTR; } static void w8001_close(struct input_dev *dev) { struct w8001 *w8001 = input_get_drvdata(dev); - mutex_lock(&w8001->mutex); + guard(mutex)(&w8001->mutex); if (--w8001->open_count == 0) w8001_command(w8001, W8001_CMD_STOP, false); - - mutex_unlock(&w8001->mutex); } static int w8001_detect(struct w8001 *w8001) @@ -595,10 +593,10 @@ static int w8001_connect(struct serio *serio, struct serio_driver *drv) struct w8001 *w8001; struct input_dev *input_dev_pen; struct input_dev *input_dev_touch; - char basename[64]; + char basename[64] = "Wacom Serial"; int err, err_pen, err_touch; - w8001 = kzalloc(sizeof(struct w8001), GFP_KERNEL); + w8001 = kzalloc(sizeof(*w8001), GFP_KERNEL); input_dev_pen = input_allocate_device(); input_dev_touch = input_allocate_device(); if (!w8001 || !input_dev_pen || !input_dev_touch) { @@ -625,8 +623,6 @@ static int w8001_connect(struct serio *serio, struct serio_driver *drv) /* For backwards-compatibility we compose the basename based on * capabilities and then just append the tool type */ - strscpy(basename, "Wacom Serial", sizeof(basename)); - err_pen = w8001_setup_pen(w8001, basename, sizeof(basename)); err_touch = w8001_setup_touch(w8001, basename, sizeof(basename)); if (err_pen && err_touch) { @@ -635,8 +631,8 @@ static int w8001_connect(struct serio *serio, struct serio_driver *drv) } if (!err_pen) { - strscpy(w8001->pen_name, basename, sizeof(w8001->pen_name)); - strlcat(w8001->pen_name, " Pen", sizeof(w8001->pen_name)); + snprintf(w8001->pen_name, sizeof(w8001->pen_name), + "%s Pen", basename); input_dev_pen->name = w8001->pen_name; w8001_set_devdata(input_dev_pen, w8001, serio); @@ -651,9 +647,8 @@ static int w8001_connect(struct serio *serio, struct serio_driver *drv) } if (!err_touch) { - strscpy(w8001->touch_name, basename, sizeof(w8001->touch_name)); - strlcat(w8001->touch_name, " Finger", - sizeof(w8001->touch_name)); + snprintf(w8001->touch_name, sizeof(w8001->touch_name), + "%s Finger", basename); input_dev_touch->name = w8001->touch_name; w8001_set_devdata(input_dev_touch, w8001, serio); |