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| author | HungNien Chen <hn.chen@weidahitech.com> | 2015-07-01 10:06:49 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2015-07-01 11:06:50 -0700 |
| commit | d55d0b56b9c3a0d94ca6cc1643063610c138dde9 (patch) | |
| tree | 3290a43f73ba12c45cb1d4dc5a24272f5766de49 /drivers/input/touchscreen/wdt87xx_i2c.c | |
| parent | 57ff96e0f08bb16c49f66250c9d90452dbbf1293 (diff) | |
| download | talos-obmc-linux-d55d0b56b9c3a0d94ca6cc1643063610c138dde9.tar.gz talos-obmc-linux-d55d0b56b9c3a0d94ca6cc1643063610c138dde9.zip | |
Input: wdt87xx_i2c - add a scaling factor for TOUCH_MAJOR event
Get the scaling factor when it reads the sys params. The width value will
multiple the factor and report the value in the TOUCH_MAJOR event.
Signed-off-by: HungNien Chen <hn.chen@weidahitech.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/touchscreen/wdt87xx_i2c.c')
| -rw-r--r-- | drivers/input/touchscreen/wdt87xx_i2c.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/drivers/input/touchscreen/wdt87xx_i2c.c b/drivers/input/touchscreen/wdt87xx_i2c.c index 9eb8e8cec17e..fb92ae1c5fae 100644 --- a/drivers/input/touchscreen/wdt87xx_i2c.c +++ b/drivers/input/touchscreen/wdt87xx_i2c.c @@ -23,7 +23,7 @@ #include <asm/unaligned.h> #define WDT87XX_NAME "wdt87xx_i2c" -#define WDT87XX_DRV_VER "0.9.5" +#define WDT87XX_DRV_VER "0.9.6" #define WDT87XX_FW_NAME "wdt87xx_fw.bin" #define WDT87XX_CFG_NAME "wdt87xx_cfg.bin" @@ -83,6 +83,7 @@ #define CTL_PARAM_OFFSET_PHY_Y1 18 #define CTL_PARAM_OFFSET_PHY_W 22 #define CTL_PARAM_OFFSET_PHY_H 24 +#define CTL_PARAM_OFFSET_FACTOR 32 /* Communication commands */ #define PACKET_SIZE 56 @@ -161,6 +162,7 @@ struct wdt87xx_sys_param { u16 phy_ch_y; u16 phy_w; u16 phy_h; + u16 scaling_factor; u32 max_x; u32 max_y; }; @@ -401,7 +403,7 @@ static int wdt87xx_get_sysparam(struct i2c_client *client, u8 buf[PKT_READ_SIZE]; int error; - error = wdt87xx_get_string(client, STRIDX_PARAMETERS, buf, 32); + error = wdt87xx_get_string(client, STRIDX_PARAMETERS, buf, 34); if (error) { dev_err(&client->dev, "failed to get parameters\n"); return error; @@ -414,6 +416,10 @@ static int wdt87xx_get_sysparam(struct i2c_client *client, param->phy_w = get_unaligned_le16(buf + CTL_PARAM_OFFSET_PHY_W) / 10; param->phy_h = get_unaligned_le16(buf + CTL_PARAM_OFFSET_PHY_H) / 10; + /* Get the scaling factor of pixel to logical coordinate */ + param->scaling_factor = + get_unaligned_le16(buf + CTL_PARAM_OFFSET_FACTOR); + param->max_x = MAX_UNIT_AXIS; param->max_y = DIV_ROUND_CLOSEST(MAX_UNIT_AXIS * param->phy_h, param->phy_w); @@ -905,8 +911,8 @@ static void wdt87xx_report_contact(struct input_dev *input, u8 *buf) { int finger_id; - u32 x, y; - u8 w, p; + u32 x, y, w; + u8 p; finger_id = (buf[FINGER_EV_V1_OFFSET_ID] >> 3) - 1; if (finger_id < 0) @@ -917,6 +923,8 @@ static void wdt87xx_report_contact(struct input_dev *input, return; w = buf[FINGER_EV_V1_OFFSET_W]; + w *= param->scaling_factor; + p = buf[FINGER_EV_V1_OFFSET_P]; x = get_unaligned_le16(buf + FINGER_EV_V1_OFFSET_X); @@ -995,7 +1003,8 @@ static int wdt87xx_ts_create_input_device(struct wdt87xx_data *wdt) input_abs_set_res(input, ABS_MT_POSITION_X, res); input_abs_set_res(input, ABS_MT_POSITION_Y, res); - input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, 0xFF, 0, 0); + input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, + 0, wdt->param.max_x, 0, 0); input_set_abs_params(input, ABS_MT_PRESSURE, 0, 0xFF, 0, 0); input_mt_init_slots(input, WDT_MAX_FINGER, |
