From d18716542d137beafef2859bdf90d4e0c9a25523 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Thu, 4 Aug 2016 08:21:19 -0700 Subject: Input: remove duplicate ft6236 driver The new(ish) ft6236 simply re-implements the M09 protocol of the (much) older edt-ft5x06.c driver. This commit removes this duplicate driver and adds the i2c ids and dt compatible string to the edt-ft5x06.c driver to keep compatibility. This commit also adds the standard touchscreen properties as optional properties to the edt,ft5x06 binding, these were documented in the focaltech,ft6236 bindingi, but were missing from the edt,ft5x06 doc. Signed-off-by: Hans de Goede Acked-by: Rob Herring Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/Kconfig | 13 -- drivers/input/touchscreen/Makefile | 1 - drivers/input/touchscreen/edt-ft5x06.c | 8 + drivers/input/touchscreen/ft6236.c | 326 --------------------------------- 4 files changed, 8 insertions(+), 340 deletions(-) delete mode 100644 drivers/input/touchscreen/ft6236.c (limited to 'drivers/input/touchscreen') diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index 8d893cefb0e3..c3e20e5357d4 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -305,19 +305,6 @@ config TOUCHSCREEN_EGALAX_SERIAL To compile this driver as a module, choose M here: the module will be called egalax_ts_serial. -config TOUCHSCREEN_FT6236 - tristate "FT6236 I2C touchscreen" - depends on I2C - depends on GPIOLIB || COMPILE_TEST - help - Say Y here to enable support for the I2C connected FT6x06 and - FT6x36 family of capacitive touchscreen drivers. - - If unsure, say N. - - To compile this driver as a module, choose M here: the - module will be called ft6236. - config TOUCHSCREEN_FUJITSU tristate "Fujitsu serial touchscreen" select SERIO diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile index b4373d6be402..57a1c099bc0d 100644 --- a/drivers/input/touchscreen/Makefile +++ b/drivers/input/touchscreen/Makefile @@ -36,7 +36,6 @@ obj-$(CONFIG_TOUCHSCREEN_ELAN) += elants_i2c.o obj-$(CONFIG_TOUCHSCREEN_ELO) += elo.o obj-$(CONFIG_TOUCHSCREEN_EGALAX) += egalax_ts.o obj-$(CONFIG_TOUCHSCREEN_EGALAX_SERIAL) += egalax_ts_serial.o -obj-$(CONFIG_TOUCHSCREEN_FT6236) += ft6236.o obj-$(CONFIG_TOUCHSCREEN_FUJITSU) += fujitsu_ts.o obj-$(CONFIG_TOUCHSCREEN_GOODIX) += goodix.o obj-$(CONFIG_TOUCHSCREEN_ILI210X) += ili210x.o diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c index 703e295a37ed..28466e358fee 100644 --- a/drivers/input/touchscreen/edt-ft5x06.c +++ b/drivers/input/touchscreen/edt-ft5x06.c @@ -1063,9 +1063,15 @@ static const struct edt_i2c_chip_data edt_ft5506_data = { .max_support_points = 10, }; +static const struct edt_i2c_chip_data edt_ft6236_data = { + .max_support_points = 2, +}; + static const struct i2c_device_id edt_ft5x06_ts_id[] = { { .name = "edt-ft5x06", .driver_data = (long)&edt_ft5x06_data }, { .name = "edt-ft5506", .driver_data = (long)&edt_ft5506_data }, + /* Note no edt- prefix for compatibility with the ft6236.c driver */ + { .name = "ft6236", .driver_data = (long)&edt_ft6236_data }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(i2c, edt_ft5x06_ts_id); @@ -1076,6 +1082,8 @@ static const struct of_device_id edt_ft5x06_of_match[] = { { .compatible = "edt,edt-ft5306", .data = &edt_ft5x06_data }, { .compatible = "edt,edt-ft5406", .data = &edt_ft5x06_data }, { .compatible = "edt,edt-ft5506", .data = &edt_ft5506_data }, + /* Note focaltech vendor prefix for compatibility with ft6236.c */ + { .compatible = "focaltech,ft6236", .data = &edt_ft6236_data }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, edt_ft5x06_of_match); diff --git a/drivers/input/touchscreen/ft6236.c b/drivers/input/touchscreen/ft6236.c deleted file mode 100644 index d240d2e212bd..000000000000 --- a/drivers/input/touchscreen/ft6236.c +++ /dev/null @@ -1,326 +0,0 @@ -/* - * FocalTech FT6236 TouchScreen driver. - * - * Copyright (c) 2010 Focal tech Ltd. - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#include -#include -#include -#include -#include -#include -#include -#include - -#define FT6236_MAX_TOUCH_POINTS 2 - -#define FT6236_REG_TH_GROUP 0x80 -#define FT6236_REG_PERIODACTIVE 0x88 -#define FT6236_REG_LIB_VER_H 0xa1 -#define FT6236_REG_LIB_VER_L 0xa2 -#define FT6236_REG_CIPHER 0xa3 -#define FT6236_REG_FIRMID 0xa6 -#define FT6236_REG_FOCALTECH_ID 0xa8 -#define FT6236_REG_RELEASE_CODE_ID 0xaf - -#define FT6236_EVENT_PRESS_DOWN 0 -#define FT6236_EVENT_LIFT_UP 1 -#define FT6236_EVENT_CONTACT 2 -#define FT6236_EVENT_NO_EVENT 3 - -struct ft6236_data { - struct i2c_client *client; - struct input_dev *input; - struct gpio_desc *reset_gpio; - u32 max_x; - u32 max_y; - bool invert_x; - bool invert_y; - bool swap_xy; -}; - -/* - * This struct is a touchpoint as stored in hardware. Note that the id, - * as well as the event, are stored in the upper nybble of the hi byte. - */ -struct ft6236_touchpoint { - union { - u8 xhi; - u8 event; - }; - u8 xlo; - union { - u8 yhi; - u8 id; - }; - u8 ylo; - u8 weight; - u8 misc; -} __packed; - -/* This packet represents the register map as read from offset 0 */ -struct ft6236_packet { - u8 dev_mode; - u8 gest_id; - u8 touches; - struct ft6236_touchpoint points[FT6236_MAX_TOUCH_POINTS]; -} __packed; - -static int ft6236_read(struct i2c_client *client, u8 reg, u8 len, void *data) -{ - int error; - - error = i2c_smbus_read_i2c_block_data(client, reg, len, data); - if (error < 0) - return error; - - if (error != len) - return -EIO; - - return 0; -} - -static irqreturn_t ft6236_interrupt(int irq, void *dev_id) -{ - struct ft6236_data *ft6236 = dev_id; - struct device *dev = &ft6236->client->dev; - struct input_dev *input = ft6236->input; - struct ft6236_packet buf; - u8 touches; - int i, error; - - error = ft6236_read(ft6236->client, 0, sizeof(buf), &buf); - if (error) { - dev_err(dev, "read touchdata failed %d\n", error); - return IRQ_HANDLED; - } - - touches = buf.touches & 0xf; - if (touches > FT6236_MAX_TOUCH_POINTS) { - dev_dbg(dev, - "%d touch points reported, only %d are supported\n", - touches, FT6236_MAX_TOUCH_POINTS); - touches = FT6236_MAX_TOUCH_POINTS; - } - - for (i = 0; i < touches; i++) { - struct ft6236_touchpoint *point = &buf.points[i]; - u16 x = ((point->xhi & 0xf) << 8) | buf.points[i].xlo; - u16 y = ((point->yhi & 0xf) << 8) | buf.points[i].ylo; - u8 event = point->event >> 6; - u8 id = point->id >> 4; - bool act = (event == FT6236_EVENT_PRESS_DOWN || - event == FT6236_EVENT_CONTACT); - - input_mt_slot(input, id); - input_mt_report_slot_state(input, MT_TOOL_FINGER, act); - if (!act) - continue; - - if (ft6236->invert_x) - x = ft6236->max_x - x; - - if (ft6236->invert_y) - y = ft6236->max_y - y; - - if (ft6236->swap_xy) { - input_report_abs(input, ABS_MT_POSITION_X, y); - input_report_abs(input, ABS_MT_POSITION_Y, x); - } else { - input_report_abs(input, ABS_MT_POSITION_X, x); - input_report_abs(input, ABS_MT_POSITION_Y, y); - } - } - - input_mt_sync_frame(input); - input_sync(input); - - return IRQ_HANDLED; -} - -static u8 ft6236_debug_read_byte(struct ft6236_data *ft6236, u8 reg) -{ - struct i2c_client *client = ft6236->client; - u8 val = 0; - int error; - - error = ft6236_read(client, reg, 1, &val); - if (error) - dev_dbg(&client->dev, - "error reading register 0x%02x: %d\n", reg, error); - - return val; -} - -static void ft6236_debug_info(struct ft6236_data *ft6236) -{ - struct device *dev = &ft6236->client->dev; - - dev_dbg(dev, "Touch threshold is %d\n", - ft6236_debug_read_byte(ft6236, FT6236_REG_TH_GROUP) * 4); - dev_dbg(dev, "Report rate is %dHz\n", - ft6236_debug_read_byte(ft6236, FT6236_REG_PERIODACTIVE) * 10); - dev_dbg(dev, "Firmware library version 0x%02x%02x\n", - ft6236_debug_read_byte(ft6236, FT6236_REG_LIB_VER_H), - ft6236_debug_read_byte(ft6236, FT6236_REG_LIB_VER_L)); - dev_dbg(dev, "Firmware version 0x%02x\n", - ft6236_debug_read_byte(ft6236, FT6236_REG_FIRMID)); - dev_dbg(dev, "Chip vendor ID 0x%02x\n", - ft6236_debug_read_byte(ft6236, FT6236_REG_CIPHER)); - dev_dbg(dev, "CTPM vendor ID 0x%02x\n", - ft6236_debug_read_byte(ft6236, FT6236_REG_FOCALTECH_ID)); - dev_dbg(dev, "Release code version 0x%02x\n", - ft6236_debug_read_byte(ft6236, FT6236_REG_RELEASE_CODE_ID)); -} - -static void ft6236_reset(struct ft6236_data *ft6236) -{ - if (!ft6236->reset_gpio) - return; - - gpiod_set_value_cansleep(ft6236->reset_gpio, 1); - usleep_range(5000, 20000); - gpiod_set_value_cansleep(ft6236->reset_gpio, 0); - msleep(300); -} - -static int ft6236_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - struct device *dev = &client->dev; - struct ft6236_data *ft6236; - struct input_dev *input; - u32 fuzz_x = 0, fuzz_y = 0; - u8 val; - int error; - - if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) - return -ENXIO; - - if (!client->irq) { - dev_err(dev, "irq is missing\n"); - return -EINVAL; - } - - ft6236 = devm_kzalloc(dev, sizeof(*ft6236), GFP_KERNEL); - if (!ft6236) - return -ENOMEM; - - ft6236->client = client; - ft6236->reset_gpio = devm_gpiod_get_optional(dev, "reset", - GPIOD_OUT_LOW); - if (IS_ERR(ft6236->reset_gpio)) { - error = PTR_ERR(ft6236->reset_gpio); - if (error != -EPROBE_DEFER) - dev_err(dev, "error getting reset gpio: %d\n", error); - return error; - } - - ft6236_reset(ft6236); - - /* verify that the controller is present */ - error = ft6236_read(client, 0x00, 1, &val); - if (error) { - dev_err(dev, "failed to read from controller: %d\n", error); - return error; - } - - ft6236_debug_info(ft6236); - - input = devm_input_allocate_device(dev); - if (!input) - return -ENOMEM; - - ft6236->input = input; - input->name = client->name; - input->id.bustype = BUS_I2C; - - if (device_property_read_u32(dev, "touchscreen-size-x", - &ft6236->max_x) || - device_property_read_u32(dev, "touchscreen-size-y", - &ft6236->max_y)) { - dev_err(dev, "touchscreen-size-x and/or -y missing\n"); - return -EINVAL; - } - - device_property_read_u32(dev, "touchscreen-fuzz-x", &fuzz_x); - device_property_read_u32(dev, "touchscreen-fuzz-y", &fuzz_y); - ft6236->invert_x = device_property_read_bool(dev, - "touchscreen-inverted-x"); - ft6236->invert_y = device_property_read_bool(dev, - "touchscreen-inverted-y"); - ft6236->swap_xy = device_property_read_bool(dev, - "touchscreen-swapped-x-y"); - - if (ft6236->swap_xy) { - input_set_abs_params(input, ABS_MT_POSITION_X, 0, - ft6236->max_y, fuzz_y, 0); - input_set_abs_params(input, ABS_MT_POSITION_Y, 0, - ft6236->max_x, fuzz_x, 0); - } else { - input_set_abs_params(input, ABS_MT_POSITION_X, 0, - ft6236->max_x, fuzz_x, 0); - input_set_abs_params(input, ABS_MT_POSITION_Y, 0, - ft6236->max_y, fuzz_y, 0); - } - - error = input_mt_init_slots(input, FT6236_MAX_TOUCH_POINTS, - INPUT_MT_DIRECT | INPUT_MT_DROP_UNUSED); - if (error) - return error; - - error = devm_request_threaded_irq(dev, client->irq, NULL, - ft6236_interrupt, IRQF_ONESHOT, - client->name, ft6236); - if (error) { - dev_err(dev, "request irq %d failed: %d\n", client->irq, error); - return error; - } - - error = input_register_device(input); - if (error) { - dev_err(dev, "failed to register input device: %d\n", error); - return error; - } - - return 0; -} - -#ifdef CONFIG_OF -static const struct of_device_id ft6236_of_match[] = { - { .compatible = "focaltech,ft6236", }, - { } -}; -MODULE_DEVICE_TABLE(of, ft6236_of_match); -#endif - -static const struct i2c_device_id ft6236_id[] = { - { "ft6236", }, - { } -}; -MODULE_DEVICE_TABLE(i2c, ft6236_id); - -static struct i2c_driver ft6236_driver = { - .driver = { - .name = "ft6236", - .of_match_table = of_match_ptr(ft6236_of_match), - }, - .probe = ft6236_probe, - .id_table = ft6236_id, -}; -module_i2c_driver(ft6236_driver); - -MODULE_AUTHOR("Sean Cross "); -MODULE_AUTHOR("Noralf Trønnes "); -MODULE_DESCRIPTION("FocalTech FT6236 TouchScreen driver"); -MODULE_LICENSE("GPL v2"); -- cgit v1.3-14-g43fede From 8ffef3cc696e9eff67ec79be349407895bffdfc1 Mon Sep 17 00:00:00 2001 From: LABBE Corentin Date: Fri, 19 Aug 2016 10:16:51 -0700 Subject: Input: pixcir_i2c_ts - simplify code with of_device_get_match_data The usage of of_device_get_match_data reduce the code size a bit. Furthermore, it is better to use a standard function for getting the match data. Signed-off-by: LABBE Corentin Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/pixcir_i2c_ts.c | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-) (limited to 'drivers/input/touchscreen') diff --git a/drivers/input/touchscreen/pixcir_i2c_ts.c b/drivers/input/touchscreen/pixcir_i2c_ts.c index d159e14f4d20..b0a2dc2fbe08 100644 --- a/drivers/input/touchscreen/pixcir_i2c_ts.c +++ b/drivers/input/touchscreen/pixcir_i2c_ts.c @@ -431,13 +431,7 @@ static const struct of_device_id pixcir_of_match[]; static int pixcir_parse_dt(struct device *dev, struct pixcir_i2c_ts_data *tsdata) { - const struct of_device_id *match; - - match = of_match_device(of_match_ptr(pixcir_of_match), dev); - if (!match) - return -EINVAL; - - tsdata->chip = (const struct pixcir_i2c_chip_data *)match->data; + tsdata->chip = of_device_get_match_data(dev); if (!tsdata->chip) return -EINVAL; -- cgit v1.3-14-g43fede From 5ac82f081ac08c5ca551aa6cfc5d81ff26efdf4e Mon Sep 17 00:00:00 2001 From: LABBE Corentin Date: Fri, 19 Aug 2016 10:17:18 -0700 Subject: Input: pixcir_i2c_ts - remove text about writing to Free Software Foundation Checkpatch complains about the text suggesting writing to Free Software Foundation for GPLv2 license copy. This patch remove that text. Signed-off-by: LABBE Corentin Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/pixcir_i2c_ts.c | 4 ---- 1 file changed, 4 deletions(-) (limited to 'drivers/input/touchscreen') diff --git a/drivers/input/touchscreen/pixcir_i2c_ts.c b/drivers/input/touchscreen/pixcir_i2c_ts.c index b0a2dc2fbe08..d8b8889fd858 100644 --- a/drivers/input/touchscreen/pixcir_i2c_ts.c +++ b/drivers/input/touchscreen/pixcir_i2c_ts.c @@ -11,10 +11,6 @@ * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include -- cgit v1.3-14-g43fede From e9bf4529d3db9e6291ebfe41be08e6bb76bdf49d Mon Sep 17 00:00:00 2001 From: LABBE Corentin Date: Fri, 19 Aug 2016 10:18:32 -0700 Subject: Input: pixcir_i2c_ts - remove a useless blank line This patch fix the following checkpatch report: Blank lines aren't necessary after an open brace Signed-off-by: LABBE Corentin Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/pixcir_i2c_ts.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers/input/touchscreen') diff --git a/drivers/input/touchscreen/pixcir_i2c_ts.c b/drivers/input/touchscreen/pixcir_i2c_ts.c index d8b8889fd858..3bb0637d832e 100644 --- a/drivers/input/touchscreen/pixcir_i2c_ts.c +++ b/drivers/input/touchscreen/pixcir_i2c_ts.c @@ -400,7 +400,6 @@ static int __maybe_unused pixcir_i2c_ts_resume(struct device *dev) mutex_lock(&input->mutex); if (device_may_wakeup(&client->dev)) { - if (!input->users) { ret = pixcir_stop(ts); if (ret) { -- cgit v1.3-14-g43fede From 62e5147568968e0679ab413c7cb2ef35c8a0a4e3 Mon Sep 17 00:00:00 2001 From: Bhaktipriya Shridhar Date: Tue, 23 Aug 2016 13:47:03 -0700 Subject: Input: mc13783_ts - remove deprecated create_singletheread_workqueue The workqueue "workqueue" has a single workitem(&priv->work) and hence doesn't require ordering. Also, it is not being used on a memory reclaim path. Hence, the singlethreaded workqueue has been replaced with the use of system_wq. System workqueues have been able to handle high level of concurrency for a long time now and hence it's not required to have a singlethreaded workqueue just to gain concurrency. Unlike a dedicated per-cpu workqueue created with create_singlethread_workqueue(), system_wq allows multiple work items to overlap executions even on the same CPU; however, a per-cpu workqueue doesn't have any CPU locality or global ordering guarantee unless the target CPU is explicitly specified and thus the increase of local concurrency shouldn't make any difference. Workitem is sync cancelled in mc13783_ts_remove() to ensure that there are no workitems pending when the driver is disconnected. Signed-off-by: Bhaktipriya Shridhar Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/mc13783_ts.c | 24 +++++++----------------- 1 file changed, 7 insertions(+), 17 deletions(-) (limited to 'drivers/input/touchscreen') diff --git a/drivers/input/touchscreen/mc13783_ts.c b/drivers/input/touchscreen/mc13783_ts.c index 913e25a994b4..ef64f36c5ffc 100644 --- a/drivers/input/touchscreen/mc13783_ts.c +++ b/drivers/input/touchscreen/mc13783_ts.c @@ -37,7 +37,6 @@ struct mc13783_ts_priv { struct input_dev *idev; struct mc13xxx *mc13xxx; struct delayed_work work; - struct workqueue_struct *workq; unsigned int sample[4]; struct mc13xxx_ts_platform_data *touch; }; @@ -54,7 +53,7 @@ static irqreturn_t mc13783_ts_handler(int irq, void *data) * be rescheduled for immediate execution here. However the rearm * delay is HZ / 50 which is acceptable. */ - queue_delayed_work(priv->workq, &priv->work, 0); + schedule_delayed_work(&priv->work, 0); return IRQ_HANDLED; } @@ -106,16 +105,18 @@ static void mc13783_ts_report_sample(struct mc13783_ts_priv *priv) dev_dbg(&idev->dev, "report (%d, %d, %d)\n", x1, y1, 0x1000 - cr0); - queue_delayed_work(priv->workq, &priv->work, HZ / 50); - } else + schedule_delayed_work(&priv->work, HZ / 50); + } else { dev_dbg(&idev->dev, "report release\n"); + } input_report_abs(idev, ABS_PRESSURE, cr0 ? 0x1000 - cr0 : cr0); input_report_key(idev, BTN_TOUCH, cr0); input_sync(idev); - } else + } else { dev_dbg(&idev->dev, "discard event\n"); + } } static void mc13783_ts_work(struct work_struct *work) @@ -189,14 +190,6 @@ static int __init mc13783_ts_probe(struct platform_device *pdev) goto err_free_mem; } - /* - * We need separate workqueue because mc13783_adc_do_conversion - * uses keventd and thus would deadlock. - */ - priv->workq = create_singlethread_workqueue("mc13783_ts"); - if (!priv->workq) - goto err_free_mem; - idev->name = MC13783_TS_NAME; idev->dev.parent = &pdev->dev; @@ -215,14 +208,12 @@ static int __init mc13783_ts_probe(struct platform_device *pdev) if (ret) { dev_err(&pdev->dev, "register input device failed with %d\n", ret); - goto err_destroy_wq; + goto err_free_mem; } platform_set_drvdata(pdev, priv); return 0; -err_destroy_wq: - destroy_workqueue(priv->workq); err_free_mem: input_free_device(idev); kfree(priv); @@ -233,7 +224,6 @@ static int mc13783_ts_remove(struct platform_device *pdev) { struct mc13783_ts_priv *priv = platform_get_drvdata(pdev); - destroy_workqueue(priv->workq); input_unregister_device(priv->idev); kfree(priv); -- cgit v1.3-14-g43fede From c9a3a7cf95d8429c5db0fc98758c21f8fefb38fa Mon Sep 17 00:00:00 2001 From: Bhaktipriya Shridhar Date: Tue, 23 Aug 2016 14:03:03 -0700 Subject: Input: wm97xx - remove deprecated create_singletheread_workqueue alloc_ordered_workqueue() replaces deprecated create_singlethread_workqueue(). It queues work items via &wm->ts_reader and &wm->pen_event_work which map to wm97xx_pen_irq_worker (handles a pen down interrupt) and wm97xx_ts_reader (the touchscreen sample reader) respectively. Hence, an ordered dedicated workqueue has been used. Signed-off-by: Bhaktipriya Shridhar Acked-by: Charles Keepax Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/wm97xx-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/input/touchscreen') diff --git a/drivers/input/touchscreen/wm97xx-core.c b/drivers/input/touchscreen/wm97xx-core.c index 1534e9b0788c..90d6be3c26cc 100644 --- a/drivers/input/touchscreen/wm97xx-core.c +++ b/drivers/input/touchscreen/wm97xx-core.c @@ -500,7 +500,7 @@ static int wm97xx_ts_input_open(struct input_dev *idev) { struct wm97xx *wm = input_get_drvdata(idev); - wm->ts_workq = create_singlethread_workqueue("kwm97xx"); + wm->ts_workq = alloc_ordered_workqueue("kwm97xx", 0); if (wm->ts_workq == NULL) { dev_err(wm->dev, "Failed to create workqueue\n"); -- cgit v1.3-14-g43fede From bc1d57fe5ff7574e6cf1d53bd88edbd87e127420 Mon Sep 17 00:00:00 2001 From: Johnny Chuang Date: Thu, 25 Aug 2016 09:26:53 -0700 Subject: Input: elants_i2c - get product id on recovery mode for FW update We use hw version to construct name of file holding touchscreen firmware, so let's try reading it even if touchscreen initialization fails (the firmware supports reading product/hardware id even when device is in recovery/boot mode). Signed-off-by: Johnny Chuang Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/elants_i2c.c | 31 ++++++++++++++++++++----------- 1 file changed, 20 insertions(+), 11 deletions(-) (limited to 'drivers/input/touchscreen') diff --git a/drivers/input/touchscreen/elants_i2c.c b/drivers/input/touchscreen/elants_i2c.c index ac09855fa435..02aec284deca 100644 --- a/drivers/input/touchscreen/elants_i2c.c +++ b/drivers/input/touchscreen/elants_i2c.c @@ -298,7 +298,7 @@ static u16 elants_i2c_parse_version(u8 *buf) return get_unaligned_be32(buf) >> 4; } -static int elants_i2c_query_fw_id(struct elants_data *ts) +static int elants_i2c_query_hw_version(struct elants_data *ts) { struct i2c_client *client = ts->client; int error, retry_cnt; @@ -318,8 +318,13 @@ static int elants_i2c_query_fw_id(struct elants_data *ts) error, (int)sizeof(resp), resp); } - dev_err(&client->dev, - "Failed to read fw id or fw id is invalid\n"); + if (error) { + dev_err(&client->dev, + "Failed to read fw id: %d\n", error); + return error; + } + + dev_err(&client->dev, "Invalid fw id: %#04x\n", ts->hw_version); return -EINVAL; } @@ -508,7 +513,7 @@ static int elants_i2c_fastboot(struct i2c_client *client) static int elants_i2c_initialize(struct elants_data *ts) { struct i2c_client *client = ts->client; - int error, retry_cnt; + int error, error2, retry_cnt; const u8 hello_packet[] = { 0x55, 0x55, 0x55, 0x55 }; const u8 recov_packet[] = { 0x55, 0x55, 0x80, 0x80 }; u8 buf[HEADER_SIZE]; @@ -553,18 +558,22 @@ static int elants_i2c_initialize(struct elants_data *ts) } } + /* hw version is available even if device in recovery state */ + error2 = elants_i2c_query_hw_version(ts); if (!error) - error = elants_i2c_query_fw_id(ts); + error = error2; + if (!error) error = elants_i2c_query_fw_version(ts); + if (!error) + error = elants_i2c_query_test_version(ts); + if (!error) + error = elants_i2c_query_bc_version(ts); + if (!error) + error = elants_i2c_query_ts_info(ts); - if (error) { + if (error) ts->iap_mode = ELAN_IAP_RECOVERY; - } else { - elants_i2c_query_test_version(ts); - elants_i2c_query_bc_version(ts); - elants_i2c_query_ts_info(ts); - } return 0; } -- cgit v1.3-14-g43fede From 4e7482332236d9f0c8f6df2e80fd73ad68363c35 Mon Sep 17 00:00:00 2001 From: HungNien Chen Date: Mon, 5 Sep 2016 10:25:36 -0700 Subject: Input: wdt87xx_i2c - fix the flash erase issue The spec says that flash erase time is 30ms typical/200ms max, so let's replace current 50ms wait with 200ms to avoid potential failures. Signed-off-by: HungNien Chen Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/wdt87xx_i2c.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'drivers/input/touchscreen') diff --git a/drivers/input/touchscreen/wdt87xx_i2c.c b/drivers/input/touchscreen/wdt87xx_i2c.c index 73861ad22df4..a9132603ab34 100644 --- a/drivers/input/touchscreen/wdt87xx_i2c.c +++ b/drivers/input/touchscreen/wdt87xx_i2c.c @@ -23,7 +23,7 @@ #include #define WDT87XX_NAME "wdt87xx_i2c" -#define WDT87XX_DRV_VER "0.9.7" +#define WDT87XX_DRV_VER "0.9.8" #define WDT87XX_FW_NAME "wdt87xx_fw.bin" #define WDT87XX_CFG_NAME "wdt87xx_cfg.bin" @@ -157,6 +157,7 @@ /* Controller requires minimum 300us between commands */ #define WDT_COMMAND_DELAY_MS 2 #define WDT_FLASH_WRITE_DELAY_MS 4 +#define WDT_FLASH_ERASE_DELAY_MS 200 #define WDT_FW_RESET_TIME 2500 struct wdt87xx_sys_param { @@ -726,7 +727,7 @@ static int wdt87xx_write_firmware(struct i2c_client *client, const void *chunk) break; } - msleep(50); + msleep(WDT_FLASH_ERASE_DELAY_MS); error = wdt87xx_write_data(client, data, start_addr, page_size); -- cgit v1.3-14-g43fede From 3521a0f05d28e75612bbe1ee014bdfedf831b23f Mon Sep 17 00:00:00 2001 From: Russell King Date: Wed, 7 Sep 2016 19:22:01 -0700 Subject: Input: jornada720_ts - get rid of mach/irqs.h and mach/hardware.h includes Switch the jornada720 touchscreen driver to obtain its gpio from the platform device via gpiolib and derive the interrupt from the GPIO, rather than via a hard-coded interrupt number obtained from the mach/irqs.h and mach/hardware.h headers. Tested-by: Adam Wysocki Signed-off-by: Russell King Signed-off-by: Dmitry Torokhov --- arch/arm/mach-sa1100/jornada720.c | 10 ++++++++++ drivers/input/touchscreen/jornada720_ts.c | 21 ++++++++++++++------- 2 files changed, 24 insertions(+), 7 deletions(-) (limited to 'drivers/input/touchscreen') diff --git a/arch/arm/mach-sa1100/jornada720.c b/arch/arm/mach-sa1100/jornada720.c index 2b96f7bc16bd..0a2ca9be00e6 100644 --- a/arch/arm/mach-sa1100/jornada720.c +++ b/arch/arm/mach-sa1100/jornada720.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include #include @@ -228,6 +229,13 @@ static struct platform_device jornada_kbd_device = { .resource = jornada_kbd_resources, }; +static struct gpiod_lookup_table jornada_ts_gpiod_table = { + .dev_id = "jornada_ts", + .table = { + GPIO_LOOKUP("gpio", 9, "penup", GPIO_ACTIVE_HIGH), + }, +}; + static struct platform_device jornada_ts_device = { .name = "jornada_ts", .id = -1, @@ -256,6 +264,8 @@ static int __init jornada720_init(void) GPSR = GPIO_GPIO20; /* restart gpio20 */ udelay(20); /* give it some time to restart */ + gpiod_add_lookup_table(&jornada_ts_gpiod_table); + ret = platform_add_devices(devices, ARRAY_SIZE(devices)); } diff --git a/drivers/input/touchscreen/jornada720_ts.c b/drivers/input/touchscreen/jornada720_ts.c index ea3b6a5b83e6..729b3c89324c 100644 --- a/drivers/input/touchscreen/jornada720_ts.c +++ b/drivers/input/touchscreen/jornada720_ts.c @@ -13,6 +13,7 @@ * HP Jornada 710/720/729 Touchscreen Driver */ +#include #include #include #include @@ -20,9 +21,7 @@ #include #include -#include #include -#include MODULE_AUTHOR("Kristoffer Ericson "); MODULE_DESCRIPTION("HP Jornada 710/720/728 touchscreen driver"); @@ -30,6 +29,7 @@ MODULE_LICENSE("GPL v2"); struct jornada_ts { struct input_dev *dev; + struct gpio_desc *gpio; int x_data[4]; /* X sample values */ int y_data[4]; /* Y sample values */ }; @@ -71,8 +71,8 @@ static irqreturn_t jornada720_ts_interrupt(int irq, void *dev_id) struct input_dev *input = jornada_ts->dev; int x, y; - /* If GPIO_GPIO9 is set to high then report pen up */ - if (GPLR & GPIO_GPIO(9)) { + /* If gpio is high then report pen up */ + if (gpiod_get_value(jornada_ts->gpio)) { input_report_key(input, BTN_TOUCH, 0); input_sync(input); } else { @@ -101,7 +101,7 @@ static int jornada720_ts_probe(struct platform_device *pdev) { struct jornada_ts *jornada_ts; struct input_dev *input_dev; - int error; + int error, irq; jornada_ts = devm_kzalloc(&pdev->dev, sizeof(*jornada_ts), GFP_KERNEL); if (!jornada_ts) @@ -113,6 +113,14 @@ static int jornada720_ts_probe(struct platform_device *pdev) platform_set_drvdata(pdev, jornada_ts); + jornada_ts->gpio = devm_gpiod_get(&pdev->dev, "penup", GPIOD_IN); + if (IS_ERR(jornada_ts->gpio)) + return PTR_ERR(jornada_ts->gpio); + + irq = gpiod_to_irq(jornada_ts->gpio); + if (irq <= 0) + return irq < 0 ? irq : -EINVAL; + jornada_ts->dev = input_dev; input_dev->name = "HP Jornada 7xx Touchscreen"; @@ -125,8 +133,7 @@ static int jornada720_ts_probe(struct platform_device *pdev) input_set_abs_params(input_dev, ABS_X, 270, 3900, 0, 0); input_set_abs_params(input_dev, ABS_Y, 180, 3700, 0, 0); - error = devm_request_irq(&pdev->dev, IRQ_GPIO9, - jornada720_ts_interrupt, + error = devm_request_irq(&pdev->dev, irq, jornada720_ts_interrupt, IRQF_TRIGGER_RISING, "HP7XX Touchscreen driver", pdev); if (error) { -- cgit v1.3-14-g43fede From 9ca5bf5029b6c17ce50b34581242f71f9b777ae7 Mon Sep 17 00:00:00 2001 From: Siebren Vroegindeweij Date: Thu, 15 Sep 2016 15:38:02 -0700 Subject: Input: add support for Elan eKTF2127 touchscreen controller This adds a driver for the Elan eKTF2127 touchscreen controller, which speaks an i2c protocol which is distinctly different from the already supported eKTH controllers. Signed-off-by: Michel Verlaan Signed-off-by: Siebren Vroegindeweij Signed-off-by: Hans de Goede Acked-by: Rob Herring Signed-off-by: Dmitry Torokhov --- .../bindings/input/touchscreen/ektf2127.txt | 27 ++ drivers/input/touchscreen/Kconfig | 12 + drivers/input/touchscreen/Makefile | 1 + drivers/input/touchscreen/ektf2127.c | 336 +++++++++++++++++++++ 4 files changed, 376 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/touchscreen/ektf2127.txt create mode 100644 drivers/input/touchscreen/ektf2127.c (limited to 'drivers/input/touchscreen') diff --git a/Documentation/devicetree/bindings/input/touchscreen/ektf2127.txt b/Documentation/devicetree/bindings/input/touchscreen/ektf2127.txt new file mode 100644 index 000000000000..5a19f4c3e9d7 --- /dev/null +++ b/Documentation/devicetree/bindings/input/touchscreen/ektf2127.txt @@ -0,0 +1,27 @@ +* Elan eKTF2127 I2C touchscreen controller + +Required properties: + - compatible : "elan,ektf2127" + - reg : I2C slave address of the chip (0x40) + - interrupt-parent : a phandle pointing to the interrupt controller + serving the interrupt for this chip + - interrupts : interrupt specification for the ektf2127 interrupt + - power-gpios : GPIO specification for the pin connected to the + ektf2127's wake input. This needs to be driven high + to take ektf2127 out of it's low power state + +For additional optional properties see: touchscreen.txt + +Example: + +i2c@00000000 { + ektf2127: touchscreen@15 { + compatible = "elan,ektf2127"; + reg = <0x15>; + interrupt-parent = <&pio>; + interrupts = <6 11 IRQ_TYPE_EDGE_FALLING> + power-gpios = <&pio 1 3 GPIO_ACTIVE_HIGH>; + touchscreen-inverted-x; + touchscreen-swapped-x-y; + }; +}; diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index c3e20e5357d4..17f75a67cc46 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -384,6 +384,18 @@ config TOUCHSCREEN_GUNZE To compile this driver as a module, choose M here: the module will be called gunze. +config TOUCHSCREEN_EKTF2127 + tristate "Elan eKTF2127 I2C touchscreen" + depends on I2C + help + Say Y here if you have an Elan eKTF2127 touchscreen + connected to your system. + + If unsure, say N. + + To compile this driver as a module, choose M here: the + module will be called ektf2127. + config TOUCHSCREEN_ELAN tristate "Elan eKTH I2C touchscreen" depends on I2C diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile index 57a1c099bc0d..81b86451782d 100644 --- a/drivers/input/touchscreen/Makefile +++ b/drivers/input/touchscreen/Makefile @@ -32,6 +32,7 @@ obj-$(CONFIG_TOUCHSCREEN_EDT_FT5X06) += edt-ft5x06.o obj-$(CONFIG_TOUCHSCREEN_HAMPSHIRE) += hampshire.o obj-$(CONFIG_TOUCHSCREEN_GUNZE) += gunze.o obj-$(CONFIG_TOUCHSCREEN_EETI) += eeti_ts.o +obj-$(CONFIG_TOUCHSCREEN_EKTF2127) += ektf2127.o obj-$(CONFIG_TOUCHSCREEN_ELAN) += elants_i2c.o obj-$(CONFIG_TOUCHSCREEN_ELO) += elo.o obj-$(CONFIG_TOUCHSCREEN_EGALAX) += egalax_ts.o diff --git a/drivers/input/touchscreen/ektf2127.c b/drivers/input/touchscreen/ektf2127.c new file mode 100644 index 000000000000..31a2dd7f38aa --- /dev/null +++ b/drivers/input/touchscreen/ektf2127.c @@ -0,0 +1,336 @@ +/* + * Driver for ELAN eKTF2127 i2c touchscreen controller + * + * For this driver the layout of the Chipone icn8318 i2c + * touchscreencontroller is used. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * Author: + * Michel Verlaan + * Siebren Vroegindeweij + * + * Original chipone_icn8318 driver: + * Hans de Goede + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* Packet header defines (first byte of data send / received) */ +#define EKTF2127_NOISE 0x40 +#define EKTF2127_RESPONSE 0x52 +#define EKTF2127_REQUEST 0x53 +#define EKTF2127_HELLO 0x55 +#define EKTF2127_REPORT 0x5d +#define EKTF2127_CALIB_DONE 0x66 + +/* Register defines (second byte of data send / received) */ +#define EKTF2127_ENV_NOISY 0x41 +#define EKTF2127_HEIGHT 0x60 +#define EKTF2127_WIDTH 0x63 + +/* 2 bytes header + 5 * 3 bytes coordinates + 3 bytes pressure info + footer */ +#define EKTF2127_TOUCH_REPORT_SIZE 21 +#define EKTF2127_MAX_TOUCHES 5 + +struct ektf2127_ts { + struct i2c_client *client; + struct input_dev *input; + struct gpio_desc *power_gpios; + struct touchscreen_properties prop; +}; + +static void ektf2127_parse_coordinates(const u8* buf, unsigned int touch_count, + struct input_mt_pos *touches) +{ + int index = 0; + int i; + + for (i = 0; i < touch_count; i++) { + index = 2 + i * 3; + + touches[i].x = (buf[index] & 0x0f); + touches[i].x <<= 8; + touches[i].x |= buf[index + 2]; + + touches[i].y = (buf[index] & 0xf0); + touches[i].y <<= 4; + touches[i].y |= buf[index + 1]; + } +} + +static void ektf2127_report_event(struct ektf2127_ts *ts, const u8 *buf) +{ + struct input_mt_pos touches[EKTF2127_MAX_TOUCHES]; + int slots[EKTF2127_MAX_TOUCHES]; + unsigned int touch_count, i; + + touch_count = buf[1] & 0x07; + if (touch_count > EKTF2127_MAX_TOUCHES) { + dev_err(&ts->client->dev, + "Too many touches %d > %d\n", + touch_count, EKTF2127_MAX_TOUCHES); + touch_count = EKTF2127_MAX_TOUCHES; + } + + ektf2127_parse_coordinates(buf, touch_count, touches); + input_mt_assign_slots(ts->input, slots, touches, + touch_count, 0); + + for (i = 0; i < touch_count; i++) { + input_mt_slot(ts->input, slots[i]); + input_mt_report_slot_state(ts->input, MT_TOOL_FINGER, true); + touchscreen_report_pos(ts->input, &ts->prop, + touches[i].x, touches[i].y, true); + } + + input_mt_sync_frame(ts->input); + input_sync(ts->input); +} + +static irqreturn_t ektf2127_irq(int irq, void *dev_id) +{ + struct ektf2127_ts *ts = dev_id; + struct device *dev = &ts->client->dev; + char buf[EKTF2127_TOUCH_REPORT_SIZE]; + int ret; + + ret = i2c_master_recv(ts->client, buf, EKTF2127_TOUCH_REPORT_SIZE); + if (ret != EKTF2127_TOUCH_REPORT_SIZE) { + dev_err(dev, "Error reading touch data: %d\n", ret); + goto out; + } + + switch (buf[0]) { + case EKTF2127_REPORT: + ektf2127_report_event(ts, buf); + break; + + case EKTF2127_NOISE: + if (buf[1] == EKTF2127_ENV_NOISY) + dev_dbg(dev, "Environment is electrically noisy\n"); + break; + + case EKTF2127_HELLO: + case EKTF2127_CALIB_DONE: + break; + + default: + dev_err(dev, "Unexpected packet header byte %#02x\n", buf[0]); + break; + } + +out: + return IRQ_HANDLED; +} + +static int ektf2127_start(struct input_dev *dev) +{ + struct ektf2127_ts *ts = input_get_drvdata(dev); + + enable_irq(ts->client->irq); + gpiod_set_value_cansleep(ts->power_gpios, 1); + + return 0; +} + +static void ektf2127_stop(struct input_dev *dev) +{ + struct ektf2127_ts *ts = input_get_drvdata(dev); + + disable_irq(ts->client->irq); + gpiod_set_value_cansleep(ts->power_gpios, 0); +} + +static int ektf2127_suspend(struct device *dev) +{ + struct ektf2127_ts *ts = i2c_get_clientdata(to_i2c_client(dev)); + + mutex_lock(&ts->input->mutex); + if (ts->input->users) + ektf2127_stop(ts->input); + mutex_unlock(&ts->input->mutex); + + return 0; +} + +static int ektf2127_resume(struct device *dev) +{ + struct ektf2127_ts *ts = i2c_get_clientdata(to_i2c_client(dev)); + + mutex_lock(&ts->input->mutex); + if (ts->input->users) + ektf2127_start(ts->input); + mutex_unlock(&ts->input->mutex); + + return 0; +} + +static SIMPLE_DEV_PM_OPS(ektf2127_pm_ops, ektf2127_suspend, + ektf2127_resume); + +static int ektf2127_query_dimension(struct i2c_client *client, bool width) +{ + struct device *dev = &client->dev; + const char *what = width ? "width" : "height"; + u8 what_code = width ? EKTF2127_WIDTH : EKTF2127_HEIGHT; + u8 buf[4]; + int ret; + int error; + + /* Request dimension */ + buf[0] = EKTF2127_REQUEST; + buf[1] = width ? EKTF2127_WIDTH : EKTF2127_HEIGHT; + buf[2] = 0x00; + buf[3] = 0x00; + ret = i2c_master_send(client, buf, sizeof(buf)); + if (ret != sizeof(buf)) { + error = ret < 0 ? ret : -EIO; + dev_err(dev, "Failed to request %s: %d\n", what, error); + return error; + } + + msleep(20); + + /* Read response */ + ret = i2c_master_recv(client, buf, sizeof(buf)); + if (ret != sizeof(buf)) { + error = ret < 0 ? ret : -EIO; + dev_err(dev, "Failed to receive %s data: %d\n", what, error); + return error; + } + + if (buf[0] != EKTF2127_RESPONSE || buf[1] != what_code) { + dev_err(dev, "Unexpected %s data: %#02x %#02x\n", + what, buf[0], buf[1]); + return -EIO; + } + + return (((buf[3] & 0xf0) << 4) | buf[2]) - 1; +} + +static int ektf2127_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct device *dev = &client->dev; + struct ektf2127_ts *ts; + struct input_dev *input; + u8 buf[4]; + int max_x, max_y; + int error; + + if (!client->irq) { + dev_err(dev, "Error no irq specified\n"); + return -EINVAL; + } + + ts = devm_kzalloc(dev, sizeof(*ts), GFP_KERNEL); + if (!ts) + return -ENOMEM; + + /* This requests the gpio *and* turns on the touchscreen controller */ + ts->power_gpios = devm_gpiod_get(dev, "power", GPIOD_OUT_HIGH); + if (IS_ERR(ts->power_gpios)) { + error = PTR_ERR(ts->power_gpios); + if (error != -EPROBE_DEFER) + dev_err(dev, "Error getting power gpio: %d\n", error); + return error; + } + + input = devm_input_allocate_device(dev); + if (!input) + return -ENOMEM; + + input->name = client->name; + input->id.bustype = BUS_I2C; + input->open = ektf2127_start; + input->close = ektf2127_stop; + + ts->client = client; + + /* Read hello (ignore result, depends on initial power state) */ + msleep(20); + i2c_master_recv(ts->client, buf, sizeof(buf)); + + /* Read resolution from chip */ + max_x = ektf2127_query_dimension(client, true); + if (max_x < 0) + return max_x; + + max_y = ektf2127_query_dimension(client, false); + if (max_y < 0) + return max_y; + + input_set_abs_params(input, ABS_MT_POSITION_X, 0, max_x, 0, 0); + input_set_abs_params(input, ABS_MT_POSITION_Y, 0, max_y, 0, 0); + touchscreen_parse_properties(input, true, &ts->prop); + + error = input_mt_init_slots(input, EKTF2127_MAX_TOUCHES, + INPUT_MT_DIRECT | + INPUT_MT_DROP_UNUSED | + INPUT_MT_TRACK); + if (error) + return error; + + ts->input = input; + input_set_drvdata(input, ts); + + error = devm_request_threaded_irq(dev, client->irq, + NULL, ektf2127_irq, + IRQF_ONESHOT, client->name, ts); + if (error) { + dev_err(dev, "Error requesting irq: %d\n", error); + return error; + } + + /* Stop device till opened */ + ektf2127_stop(ts->input); + + error = input_register_device(input); + if (error) + return error; + + i2c_set_clientdata(client, ts); + + return 0; +} + +#ifdef CONFIG_OF +static const struct of_device_id ektf2127_of_match[] = { + { .compatible = "elan,ektf2127" }, + {} +}; +MODULE_DEVICE_TABLE(of, ektf2127_of_match); +#endif + +static const struct i2c_device_id ektf2127_i2c_id[] = { + { "ektf2127", 0 }, + {} +}; +MODULE_DEVICE_TABLE(i2c, ektf2127_i2c_id); + +static struct i2c_driver ektf2127_driver = { + .driver = { + .name = "elan_ektf2127", + .pm = &ektf2127_pm_ops, + .of_match_table = of_match_ptr(ektf2127_of_match), + }, + .probe = ektf2127_probe, + .id_table = ektf2127_i2c_id, +}; +module_i2c_driver(ektf2127_driver); + +MODULE_DESCRIPTION("ELAN eKTF2127 I2C Touchscreen Driver"); +MODULE_AUTHOR("Michel Verlaan, Siebren Vroegindeweij"); +MODULE_LICENSE("GPL"); -- cgit v1.3-14-g43fede From 979987ded3a5ae1fb60ef751bdf185c502d70590 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Fri, 30 Sep 2016 15:36:54 -0700 Subject: Input: ektf2127 - mark PM functions as __maybe_unused The newly added ektf2127 driver uses the SIMPLE_DEV_PM_OPS macro to conditionally refer to the resume/suspend functions, which causes a warning when CONFIG_PM_SLEEP is disabled: drivers/input/touchscreen/ektf2127.c:168:12: error: 'ektf2127_resume' defined but not used [-Werror=unused-function] drivers/input/touchscreen/ektf2127.c:156:12: error: 'ektf2127_suspend' defined but not used [-Werror=unused-function] We could either put these functions inside of an #ifdef or add __maybe_unused annotations. This uses the second approach, which is generally more foolproof. Fixes: 9ca5bf5029b6 ("Input: add support for Elan eKTF2127 touchscreen controller") Signed-off-by: Arnd Bergmann Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/ektf2127.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/input/touchscreen') diff --git a/drivers/input/touchscreen/ektf2127.c b/drivers/input/touchscreen/ektf2127.c index 31a2dd7f38aa..0ed34ff787ce 100644 --- a/drivers/input/touchscreen/ektf2127.c +++ b/drivers/input/touchscreen/ektf2127.c @@ -153,7 +153,7 @@ static void ektf2127_stop(struct input_dev *dev) gpiod_set_value_cansleep(ts->power_gpios, 0); } -static int ektf2127_suspend(struct device *dev) +static int __maybe_unused ektf2127_suspend(struct device *dev) { struct ektf2127_ts *ts = i2c_get_clientdata(to_i2c_client(dev)); @@ -165,7 +165,7 @@ static int ektf2127_suspend(struct device *dev) return 0; } -static int ektf2127_resume(struct device *dev) +static int __maybe_unused ektf2127_resume(struct device *dev) { struct ektf2127_ts *ts = i2c_get_clientdata(to_i2c_client(dev)); -- cgit v1.3-14-g43fede