diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/input/touchscreen/pixcir_i2c_ts.c | 95 |
1 files changed, 44 insertions, 51 deletions
diff --git a/drivers/input/touchscreen/pixcir_i2c_ts.c b/drivers/input/touchscreen/pixcir_i2c_ts.c index f47480e8dff8..68d0d549797c 100644 --- a/drivers/input/touchscreen/pixcir_i2c_ts.c +++ b/drivers/input/touchscreen/pixcir_i2c_ts.c @@ -24,9 +24,10 @@ #include <linux/i2c.h> #include <linux/input.h> #include <linux/input/mt.h> +#include <linux/input/touchscreen.h> #include <linux/gpio.h> #include <linux/gpio/consumer.h> -#include <linux/of.h> +/*#include <linux/of.h>*/ #include <linux/of_device.h> #include <linux/platform_data/pixcir_i2c_ts.h> @@ -37,9 +38,9 @@ struct pixcir_i2c_ts_data { struct input_dev *input; struct gpio_desc *gpio_attb; struct gpio_desc *gpio_reset; - const struct pixcir_ts_platform_data *pdata; - bool running; + const struct pixcir_i2c_chip_data *chip; int max_fingers; /* Max fingers supported in this instance */ + bool running; }; struct pixcir_touch { @@ -62,7 +63,7 @@ static void pixcir_ts_parse(struct pixcir_i2c_ts_data *tsdata, u8 touch; int ret, i; int readsize; - const struct pixcir_i2c_chip_data *chip = &tsdata->pdata->chip; + const struct pixcir_i2c_chip_data *chip = tsdata->chip; memset(report, 0, sizeof(struct pixcir_report_data)); @@ -115,13 +116,13 @@ static void pixcir_ts_report(struct pixcir_i2c_ts_data *ts, struct pixcir_touch *touch; int n, i, slot; struct device *dev = &ts->client->dev; - const struct pixcir_i2c_chip_data *chip = &ts->pdata->chip; + const struct pixcir_i2c_chip_data *chip = ts->chip; n = report->num_touches; if (n > PIXCIR_MAX_SLOTS) n = PIXCIR_MAX_SLOTS; - if (!chip->has_hw_ids) { + if (!ts->chip->has_hw_ids) { for (i = 0; i < n; i++) { touch = &report->touches[i]; pos[i].x = touch->x; @@ -423,77 +424,59 @@ static SIMPLE_DEV_PM_OPS(pixcir_dev_pm_ops, #ifdef CONFIG_OF static const struct of_device_id pixcir_of_match[]; -static struct pixcir_ts_platform_data *pixcir_parse_dt(struct device *dev) +static int pixcir_parse_dt(struct device *dev, + struct pixcir_i2c_ts_data *tsdata) { - struct pixcir_ts_platform_data *pdata; - struct device_node *np = dev->of_node; const struct of_device_id *match; match = of_match_device(of_match_ptr(pixcir_of_match), dev); if (!match) - return ERR_PTR(-EINVAL); - - pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); - if (!pdata) - return ERR_PTR(-ENOMEM); - - pdata->chip = *(const struct pixcir_i2c_chip_data *)match->data; - - if (of_property_read_u32(np, "touchscreen-size-x", &pdata->x_max)) { - dev_err(dev, "Failed to get touchscreen-size-x property\n"); - return ERR_PTR(-EINVAL); - } - pdata->x_max -= 1; - - if (of_property_read_u32(np, "touchscreen-size-y", &pdata->y_max)) { - dev_err(dev, "Failed to get touchscreen-size-y property\n"); - return ERR_PTR(-EINVAL); - } - pdata->y_max -= 1; + return -EINVAL; - dev_dbg(dev, "%s: x %d, y %d\n", __func__, - pdata->x_max + 1, pdata->y_max + 1); + tsdata->chip = (const struct pixcir_i2c_chip_data *)match->data; + if (!tsdata->chip) + return -EINVAL; - return pdata; + return 0; } #else -static struct pixcir_ts_platform_data *pixcir_parse_dt(struct device *dev) +static int pixcir_parse_dt(struct device *dev, + struct pixcir_i2c_ts_data *tsdata) { - return ERR_PTR(-EINVAL); + return -EINVAL; } #endif static int pixcir_i2c_ts_probe(struct i2c_client *client, - const struct i2c_device_id *id) + const struct i2c_device_id *id) { const struct pixcir_ts_platform_data *pdata = dev_get_platdata(&client->dev); struct device *dev = &client->dev; - struct device_node *np = dev->of_node; struct pixcir_i2c_ts_data *tsdata; struct input_dev *input; int error; - if (np && !pdata) { - pdata = pixcir_parse_dt(dev); - if (IS_ERR(pdata)) - return PTR_ERR(pdata); - } + tsdata = devm_kzalloc(dev, sizeof(*tsdata), GFP_KERNEL); + if (!tsdata) + return -ENOMEM; - if (!pdata) { + if (pdata) { + tsdata->chip = &pdata->chip; + } else if (dev->of_node) { + error = pixcir_parse_dt(dev, tsdata); + if (error) + return error; + } else { dev_err(&client->dev, "platform data not defined\n"); return -EINVAL; } - if (!pdata->chip.max_fingers) { - dev_err(dev, "Invalid max_fingers in pdata\n"); + if (!tsdata->chip->max_fingers) { + dev_err(dev, "Invalid max_fingers in chip data\n"); return -EINVAL; } - tsdata = devm_kzalloc(dev, sizeof(*tsdata), GFP_KERNEL); - if (!tsdata) - return -ENOMEM; - input = devm_input_allocate_device(dev); if (!input) { dev_err(dev, "Failed to allocate input device\n"); @@ -502,7 +485,6 @@ static int pixcir_i2c_ts_probe(struct i2c_client *client, tsdata->client = client; tsdata->input = input; - tsdata->pdata = pdata; input->name = client->name; input->id.bustype = BUS_I2C; @@ -510,10 +492,21 @@ static int pixcir_i2c_ts_probe(struct i2c_client *client, input->close = pixcir_input_close; input->dev.parent = &client->dev; - input_set_abs_params(input, ABS_MT_POSITION_X, 0, pdata->x_max, 0, 0); - input_set_abs_params(input, ABS_MT_POSITION_Y, 0, pdata->y_max, 0, 0); + if (pdata) { + input_set_abs_params(input, ABS_MT_POSITION_X, 0, pdata->x_max, 0, 0); + input_set_abs_params(input, ABS_MT_POSITION_Y, 0, pdata->y_max, 0, 0); + } else { + input_set_capability(input, EV_ABS, ABS_MT_POSITION_X); + input_set_capability(input, EV_ABS, ABS_MT_POSITION_Y); + touchscreen_parse_properties(input, true); + if (!input_abs_get_max(input, ABS_MT_POSITION_X) || + !input_abs_get_max(input, ABS_MT_POSITION_Y)) { + dev_err(dev, "Touchscreen size is not specified\n"); + return -EINVAL; + } + } - tsdata->max_fingers = tsdata->pdata->chip.max_fingers; + tsdata->max_fingers = tsdata->chip->max_fingers; if (tsdata->max_fingers > PIXCIR_MAX_SLOTS) { tsdata->max_fingers = PIXCIR_MAX_SLOTS; dev_info(dev, "Limiting maximum fingers to %d\n", |