diff options
| -rw-r--r-- | Documentation/devicetree/bindings/input/touchscreen/edt-ft5x06.txt | 8 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/input/touchscreen/focaltech-ft6236.txt | 35 | ||||
| -rw-r--r-- | drivers/input/touchscreen/Kconfig | 13 | ||||
| -rw-r--r-- | drivers/input/touchscreen/Makefile | 1 | ||||
| -rw-r--r-- | drivers/input/touchscreen/edt-ft5x06.c | 8 | ||||
| -rw-r--r-- | drivers/input/touchscreen/ft6236.c | 326 |
6 files changed, 16 insertions, 375 deletions
diff --git a/Documentation/devicetree/bindings/input/touchscreen/edt-ft5x06.txt b/Documentation/devicetree/bindings/input/touchscreen/edt-ft5x06.txt index f99528da1b1d..6db22103e2dd 100644 --- a/Documentation/devicetree/bindings/input/touchscreen/edt-ft5x06.txt +++ b/Documentation/devicetree/bindings/input/touchscreen/edt-ft5x06.txt @@ -19,6 +19,7 @@ Required properties: or: "edt,edt-ft5306" or: "edt,edt-ft5406" or: "edt,edt-ft5506" + or: "focaltech,ft6236" - reg: I2C slave address of the chip (0x38) - interrupt-parent: a phandle pointing to the interrupt controller @@ -43,6 +44,13 @@ Optional properties: - offset: allows setting the edge compensation in the range from 0 to 31. + - touchscreen-size-x : See touchscreen.txt + - touchscreen-size-y : See touchscreen.txt + - touchscreen-fuzz-x : See touchscreen.txt + - touchscreen-fuzz-y : See touchscreen.txt + - touchscreen-inverted-x : See touchscreen.txt + - touchscreen-inverted-y : See touchscreen.txt + - touchscreen-swapped-x-y : See touchscreen.txt Example: polytouch: edt-ft5x06@38 { diff --git a/Documentation/devicetree/bindings/input/touchscreen/focaltech-ft6236.txt b/Documentation/devicetree/bindings/input/touchscreen/focaltech-ft6236.txt deleted file mode 100644 index 777521da3da5..000000000000 --- a/Documentation/devicetree/bindings/input/touchscreen/focaltech-ft6236.txt +++ /dev/null @@ -1,35 +0,0 @@ -* FocalTech FT6236 I2C touchscreen controller - -Required properties: - - compatible : "focaltech,ft6236" - - reg : I2C slave address of the chip (0x38) - - interrupt-parent : a phandle pointing to the interrupt controller - serving the interrupt for this chip - - interrupts : interrupt specification for the touch controller - interrupt - - reset-gpios : GPIO specification for the RSTN input - - touchscreen-size-x : horizontal resolution of touchscreen (in pixels) - - touchscreen-size-y : vertical resolution of touchscreen (in pixels) - -Optional properties: - - touchscreen-fuzz-x : horizontal noise value of the absolute input - device (in pixels) - - touchscreen-fuzz-y : vertical noise value of the absolute input - device (in pixels) - - touchscreen-inverted-x : X axis is inverted (boolean) - - touchscreen-inverted-y : Y axis is inverted (boolean) - - touchscreen-swapped-x-y: X and Y axis are swapped (boolean) - Swapping is done after inverting the axis - -Example: - - ft6x06@38 { - compatible = "focaltech,ft6236"; - reg = <0x38>; - interrupt-parent = <&gpio>; - interrupts = <23 2>; - touchscreen-size-x = <320>; - touchscreen-size-y = <480>; - touchscreen-inverted-x; - touchscreen-swapped-x-y; - }; 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 <linux/delay.h> -#include <linux/gpio/consumer.h> -#include <linux/i2c.h> -#include <linux/input.h> -#include <linux/input/mt.h> -#include <linux/interrupt.h> -#include <linux/module.h> -#include <linux/property.h> - -#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 <xobs@kosagi.com>"); -MODULE_AUTHOR("Noralf Trønnes <noralf@tronnes.org>"); -MODULE_DESCRIPTION("FocalTech FT6236 TouchScreen driver"); -MODULE_LICENSE("GPL v2"); |