diff options
Diffstat (limited to 'drivers/input/touchscreen/bu21013_ts.c')
| -rw-r--r-- | drivers/input/touchscreen/bu21013_ts.c | 109 |
1 files changed, 37 insertions, 72 deletions
diff --git a/drivers/input/touchscreen/bu21013_ts.c b/drivers/input/touchscreen/bu21013_ts.c index 2b8538a63945..f3b3e4c72c84 100644 --- a/drivers/input/touchscreen/bu21013_ts.c +++ b/drivers/input/touchscreen/bu21013_ts.c @@ -4,18 +4,18 @@ * Author: Naveen Kumar G <naveen.gaddipati@stericsson.com> for ST-Ericsson */ -#include <linux/kernel.h> +#include <linux/bitops.h> #include <linux/delay.h> -#include <linux/interrupt.h> +#include <linux/gpio/consumer.h> #include <linux/i2c.h> -#include <linux/workqueue.h> #include <linux/input.h> -#include <linux/input/bu21013.h> -#include <linux/slab.h> -#include <linux/regulator/consumer.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> #include <linux/module.h> -#include <linux/gpio/consumer.h> -#include <linux/of.h> +#include <linux/property.h> +#include <linux/regulator/consumer.h> +#include <linux/slab.h> +#include <linux/types.h> #define MAX_FINGERS 2 #define RESET_DELAY 30 @@ -137,23 +137,32 @@ /** * struct bu21013_ts - touch panel data structure * @client: pointer to the i2c client - * @touch_stopped: touch stop flag - * @chip: pointer to the touch panel controller * @in_dev: pointer to the input device structure * @regulator: pointer to the Regulator used for touch screen * @cs_gpiod: chip select GPIO line * @int_gpiod: touch interrupt GPIO line + * @irq: interrupt number the device is using + * @touch_x_max: maximum X coordinate reported by the device + * @touch_y_max: maximum Y coordinate reported by the device + * @x_flip: indicates that the driver should invert X coordinate before + * reporting + * @y_flip: indicates that the driver should invert Y coordinate before + * reporting + * @touch_stopped: touch stop flag * * Touch panel device data structure */ struct bu21013_ts { struct i2c_client *client; - const struct bu21013_platform_device *chip; struct input_dev *in_dev; struct regulator *regulator; struct gpio_desc *cs_gpiod; struct gpio_desc *int_gpiod; unsigned int irq; + u32 touch_x_max; + u32 touch_y_max; + bool x_flip; + bool y_flip; bool touch_stopped; }; @@ -208,10 +217,10 @@ static int bu21013_do_touch_report(struct bu21013_ts *ts) } for (i = 0; i < finger_down_count; i++) { - if (ts->chip->x_flip) - pos_x[i] = ts->chip->touch_x_max - pos_x[i]; - if (ts->chip->y_flip) - pos_y[i] = ts->chip->touch_y_max - pos_y[i]; + if (ts->x_flip) + pos_x[i] = ts->touch_x_max - pos_x[i]; + if (ts->y_flip) + pos_y[i] = ts->touch_y_max - pos_y[i]; input_report_abs(ts->in_dev, ABS_MT_POSITION_X, pos_x[i]); @@ -304,14 +313,9 @@ static int bu21013_init_chip(struct bu21013_ts *ts) return error; } - if (ts->chip->ext_clk) - error = i2c_smbus_write_byte_data(client, BU21013_CLK_MODE_REG, - BU21013_CLK_MODE_EXT | - BU21013_CLK_MODE_CALIB); - else - error = i2c_smbus_write_byte_data(client, BU21013_CLK_MODE_REG, - BU21013_CLK_MODE_DIV | - BU21013_CLK_MODE_CALIB); + error = i2c_smbus_write_byte_data(client, BU21013_CLK_MODE_REG, + BU21013_CLK_MODE_DIV | + BU21013_CLK_MODE_CALIB); if (error) { dev_err(&client->dev, "BU21013_CLK_MODE reg write failed\n"); return error; @@ -388,43 +392,6 @@ static int bu21013_init_chip(struct bu21013_ts *ts) return 0; } -#ifdef CONFIG_OF -static const struct bu21013_platform_device * -bu21013_parse_dt(struct device *dev) -{ - struct device_node *np = dev->of_node; - struct bu21013_platform_device *pdata; - - if (!np) { - dev_err(dev, "no device tree or platform data\n"); - return ERR_PTR(-EINVAL); - } - - pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); - if (!pdata) - return ERR_PTR(-ENOMEM); - - pdata->y_flip = pdata->x_flip = false; - - pdata->x_flip = of_property_read_bool(np, "rohm,flip-x"); - pdata->y_flip = of_property_read_bool(np, "rohm,flip-y"); - - of_property_read_u32(np, "rohm,touch-max-x", &pdata->touch_x_max); - of_property_read_u32(np, "rohm,touch-max-y", &pdata->touch_y_max); - - pdata->ext_clk = false; - - return pdata; -} -#else -static inline const struct bu21013_platform_device * -bu21013_parse_dt(struct device *dev) -{ - dev_err(dev, "no platform data available\n"); - return ERR_PTR(-EINVAL); -} -#endif - static void bu21013_power_off(void *_ts) { struct bu21013_ts *ts = _ts; @@ -442,8 +409,6 @@ static void bu21013_disable_chip(void *_ts) static int bu21013_probe(struct i2c_client *client, const struct i2c_device_id *id) { - const struct bu21013_platform_device *pdata = - dev_get_platdata(&client->dev); struct bu21013_ts *ts; struct input_dev *in_dev; int error; @@ -454,19 +419,20 @@ static int bu21013_probe(struct i2c_client *client, return -EIO; } - if (!pdata) { - pdata = bu21013_parse_dt(&client->dev); - if (IS_ERR(pdata)) - return PTR_ERR(pdata); - } - ts = devm_kzalloc(&client->dev, sizeof(*ts), GFP_KERNEL); if (!ts) return -ENOMEM; - ts->chip = pdata; ts->client = client; + ts->x_flip = device_property_read_bool(&client->dev, "rohm,flip-x"); + ts->y_flip = device_property_read_bool(&client->dev, "rohm,flip-y"); + + device_property_read_u32(&client->dev, "rohm,touch-max-x", + &ts->touch_x_max); + device_property_read_u32(&client->dev, "rohm,touch-max-y", + &ts->touch_y_max); + in_dev = devm_input_allocate_device(&client->dev); if (!in_dev) { dev_err(&client->dev, "device memory alloc failed\n"); @@ -483,9 +449,9 @@ static int bu21013_probe(struct i2c_client *client, __set_bit(EV_ABS, in_dev->evbit); input_set_abs_params(in_dev, ABS_MT_POSITION_X, - 0, pdata->touch_x_max, 0, 0); + 0, ts->touch_x_max, 0, 0); input_set_abs_params(in_dev, ABS_MT_POSITION_Y, - 0, pdata->touch_y_max, 0, 0); + 0, ts->touch_y_max, 0, 0); input_set_drvdata(in_dev, ts); ts->regulator = devm_regulator_get(&client->dev, "avdd"); @@ -560,7 +526,6 @@ static int bu21013_probe(struct i2c_client *client, return error; } - device_init_wakeup(&client->dev, pdata->wakeup); i2c_set_clientdata(client, ts); return 0; |