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author | 2018-01-22 17:45:09 -0800 | |
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committer | 2018-01-26 11:27:23 -0800 | |
commit | 5b0d0033f3f3a3d09178ef0dcdd0d4e1a08666b8 (patch) | |
tree | 256d2a9bbb1c670c6802392ef35f6a045ef9ad60 /drivers/input/touchscreen | |
parent | Input: mms114 - mark as direct input device (diff) | |
download | linux-5b0d0033f3f3a3d09178ef0dcdd0d4e1a08666b8.tar.gz linux-5b0d0033f3f3a3d09178ef0dcdd0d4e1a08666b8.tar.bz2 linux-5b0d0033f3f3a3d09178ef0dcdd0d4e1a08666b8.zip |
Input: mms114 - drop platform data and use generic APIs
The MMS114 platform data has no in-tree users, so drop it.
Switch to using the standard touchscreen properties via
touchscreen_parse_properties(), and move the old DT parsing code
to use device_property_*() APIs.
Finally, use touchscreen_report_pos to report x/y coordinates
and drop the custom x/y inversion code.
Signed-off-by: Simon Shields <simon@lineageos.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Andi Shyti <andi.shyti@samsung.com>
Tested-by: Andi Shyti <andi.shyti@samsung.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/touchscreen')
-rw-r--r-- | drivers/input/touchscreen/mms114.c | 147 |
1 files changed, 65 insertions, 82 deletions
diff --git a/drivers/input/touchscreen/mms114.c b/drivers/input/touchscreen/mms114.c index c3480db5d21e..69e4288bf8aa 100644 --- a/drivers/input/touchscreen/mms114.c +++ b/drivers/input/touchscreen/mms114.c @@ -12,8 +12,8 @@ #include <linux/of.h> #include <linux/i2c.h> #include <linux/input/mt.h> +#include <linux/input/touchscreen.h> #include <linux/interrupt.h> -#include <linux/platform_data/mms114.h> #include <linux/regulator/consumer.h> #include <linux/slab.h> @@ -55,7 +55,9 @@ struct mms114_data { struct input_dev *input_dev; struct regulator *core_reg; struct regulator *io_reg; - const struct mms114_platform_data *pdata; + struct touchscreen_properties props; + unsigned int contact_threshold; + unsigned int moving_threshold; /* Use cache data for mode control register(write only) */ u8 cache_mode_control; @@ -143,7 +145,6 @@ static int mms114_write_reg(struct mms114_data *data, unsigned int reg, static void mms114_process_mt(struct mms114_data *data, struct mms114_touch *touch) { - const struct mms114_platform_data *pdata = data->pdata; struct i2c_client *client = data->client; struct input_dev *input_dev = data->input_dev; unsigned int id; @@ -163,16 +164,6 @@ static void mms114_process_mt(struct mms114_data *data, struct mms114_touch *tou id = touch->id - 1; x = touch->x_lo | touch->x_hi << 8; y = touch->y_lo | touch->y_hi << 8; - if (x > pdata->x_size || y > pdata->y_size) { - dev_dbg(&client->dev, - "Wrong touch coordinates (%d, %d)\n", x, y); - return; - } - - if (pdata->x_invert) - x = pdata->x_size - x; - if (pdata->y_invert) - y = pdata->y_size - y; dev_dbg(&client->dev, "id: %d, type: %d, pressed: %d, x: %d, y: %d, width: %d, strength: %d\n", @@ -183,9 +174,8 @@ static void mms114_process_mt(struct mms114_data *data, struct mms114_touch *tou input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, touch->pressed); if (touch->pressed) { + touchscreen_report_pos(input_dev, &data->props, x, y, true); input_report_abs(input_dev, ABS_MT_TOUCH_MAJOR, touch->width); - input_report_abs(input_dev, ABS_MT_POSITION_X, x); - input_report_abs(input_dev, ABS_MT_POSITION_Y, y); input_report_abs(input_dev, ABS_MT_PRESSURE, touch->strength); } } @@ -263,7 +253,7 @@ static int mms114_get_version(struct mms114_data *data) static int mms114_setup_regs(struct mms114_data *data) { - const struct mms114_platform_data *pdata = data->pdata; + const struct touchscreen_properties *props = &data->props; int val; int error; @@ -275,32 +265,32 @@ static int mms114_setup_regs(struct mms114_data *data) if (error < 0) return error; - val = (pdata->x_size >> 8) & 0xf; - val |= ((pdata->y_size >> 8) & 0xf) << 4; + val = (props->max_x >> 8) & 0xf; + val |= ((props->max_y >> 8) & 0xf) << 4; error = mms114_write_reg(data, MMS114_XY_RESOLUTION_H, val); if (error < 0) return error; - val = pdata->x_size & 0xff; + val = props->max_x & 0xff; error = mms114_write_reg(data, MMS114_X_RESOLUTION, val); if (error < 0) return error; - val = pdata->y_size & 0xff; + val = props->max_x & 0xff; error = mms114_write_reg(data, MMS114_Y_RESOLUTION, val); if (error < 0) return error; - if (pdata->contact_threshold) { + if (data->contact_threshold) { error = mms114_write_reg(data, MMS114_CONTACT_THRESHOLD, - pdata->contact_threshold); + data->contact_threshold); if (error < 0) return error; } - if (pdata->moving_threshold) { + if (data->moving_threshold) { error = mms114_write_reg(data, MMS114_MOVING_THRESHOLD, - pdata->moving_threshold); + data->moving_threshold); if (error < 0) return error; } @@ -335,9 +325,6 @@ static int mms114_start(struct mms114_data *data) return error; } - if (data->pdata->cfg_pin) - data->pdata->cfg_pin(true); - enable_irq(client->irq); return 0; @@ -350,9 +337,6 @@ static void mms114_stop(struct mms114_data *data) disable_irq(client->irq); - if (data->pdata->cfg_pin) - data->pdata->cfg_pin(false); - error = regulator_disable(data->io_reg); if (error) dev_warn(&client->dev, "Failed to disable vdd: %d\n", error); @@ -376,67 +360,43 @@ static void mms114_input_close(struct input_dev *dev) mms114_stop(data); } -#ifdef CONFIG_OF -static struct mms114_platform_data *mms114_parse_dt(struct device *dev) +static int mms114_parse_legacy_bindings(struct mms114_data *data) { - struct mms114_platform_data *pdata; - struct device_node *np = dev->of_node; - - if (!np) - return NULL; + struct device *dev = &data->client->dev; + struct touchscreen_properties *props = &data->props; - pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); - if (!pdata) { - dev_err(dev, "failed to allocate platform data\n"); - return NULL; + if (device_property_read_u32(dev, "x-size", &props->max_x)) { + dev_dbg(dev, "failed to get legacy x-size property\n"); + return -EINVAL; } - if (of_property_read_u32(np, "x-size", &pdata->x_size)) { - dev_err(dev, "failed to get x-size property\n"); - return NULL; + if (device_property_read_u32(dev, "y-size", &props->max_y)) { + dev_dbg(dev, "failed to get legacy y-size property\n"); + return -EINVAL; } - if (of_property_read_u32(np, "y-size", &pdata->y_size)) { - dev_err(dev, "failed to get y-size property\n"); - return NULL; - } + device_property_read_u32(dev, "contact-threshold", + &data->contact_threshold); + device_property_read_u32(dev, "moving-threshold", + &data->moving_threshold); - of_property_read_u32(np, "contact-threshold", - &pdata->contact_threshold); - of_property_read_u32(np, "moving-threshold", - &pdata->moving_threshold); + if (device_property_read_bool(dev, "x-invert")) + props->invert_x = true; + if (device_property_read_bool(dev, "y-invert")) + props->invert_y = true; - if (of_find_property(np, "x-invert", NULL)) - pdata->x_invert = true; - if (of_find_property(np, "y-invert", NULL)) - pdata->y_invert = true; + props->swap_x_y = false; - return pdata; -} -#else -static inline struct mms114_platform_data *mms114_parse_dt(struct device *dev) -{ - return NULL; + return 0; } -#endif static int mms114_probe(struct i2c_client *client, const struct i2c_device_id *id) { - const struct mms114_platform_data *pdata; struct mms114_data *data; struct input_dev *input_dev; int error; - pdata = dev_get_platdata(&client->dev); - if (!pdata) - pdata = mms114_parse_dt(&client->dev); - - if (!pdata) { - dev_err(&client->dev, "Need platform data\n"); - return -EINVAL; - } - if (!i2c_check_functionality(client->adapter, I2C_FUNC_PROTOCOL_MANGLING)) { dev_err(&client->dev, @@ -454,7 +414,38 @@ static int mms114_probe(struct i2c_client *client, data->client = client; data->input_dev = input_dev; - data->pdata = pdata; + + input_set_capability(input_dev, EV_ABS, ABS_MT_POSITION_X); + input_set_capability(input_dev, EV_ABS, ABS_MT_POSITION_Y); + input_set_abs_params(input_dev, ABS_MT_PRESSURE, 0, 255, 0, 0); + input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, + 0, MMS114_MAX_AREA, 0, 0); + + touchscreen_parse_properties(input_dev, true, &data->props); + if (!data->props.max_x || !data->props.max_y) { + dev_dbg(&client->dev, + "missing X/Y size properties, trying legacy bindings\n"); + error = mms114_parse_legacy_bindings(data); + if (error) + return error; + + input_set_abs_params(input_dev, ABS_MT_POSITION_X, + 0, data->props.max_x, 0, 0); + input_set_abs_params(input_dev, ABS_MT_POSITION_Y, + 0, data->props.max_y, 0, 0); + } + + /* + * The firmware handles movement and pressure fuzz, so + * don't duplicate that in software. + */ + data->moving_threshold = input_abs_get_fuzz(input_dev, + ABS_MT_POSITION_X); + data->contact_threshold = input_abs_get_fuzz(input_dev, + ABS_MT_PRESSURE); + input_abs_set_fuzz(input_dev, ABS_MT_POSITION_X, 0); + input_abs_set_fuzz(input_dev, ABS_MT_POSITION_Y, 0); + input_abs_set_fuzz(input_dev, ABS_MT_PRESSURE, 0); input_dev->name = "MELFAS MMS114 Touchscreen"; input_dev->id.bustype = BUS_I2C; @@ -462,14 +453,6 @@ static int mms114_probe(struct i2c_client *client, input_dev->open = mms114_input_open; input_dev->close = mms114_input_close; - input_set_abs_params(input_dev, ABS_MT_TOUCH_MAJOR, - 0, MMS114_MAX_AREA, 0, 0); - input_set_abs_params(input_dev, ABS_MT_POSITION_X, - 0, data->pdata->x_size, 0, 0); - input_set_abs_params(input_dev, ABS_MT_POSITION_Y, - 0, data->pdata->y_size, 0, 0); - input_set_abs_params(input_dev, ABS_MT_PRESSURE, 0, 255, 0, 0); - error = input_mt_init_slots(input_dev, MMS114_MAX_TOUCH, INPUT_MT_DIRECT); if (error) |