On Wed, Jul 01, 2015 at 04:18:37PM +0800, HungNien Chen wrote:
> 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.c...@weidahitech.com>
Applied, thank you, but I changed scl_fctr to scale_factor.
> ---
> drivers/input/touchscreen/wdt87xx_i2c.c | 18 +++++++++++++-----
> 1 file changed, 13 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/input/touchscreen/wdt87xx_i2c.c
> b/drivers/input/touchscreen/wdt87xx_i2c.c
> index c073ea9..b958d18 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 scl_fctr;
> 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 +416,9 @@ 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 logcial coordinate */
> + param->scl_fctr = 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 +910,8 @@ 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 +922,8 @@ static void wdt87xx_report_contact(struct input_dev
> *input,
> return;
>
> w = buf[FINGER_EV_V1_OFFSET_W];
> + w = w * param->scl_fctr;
> +
> p = buf[FINGER_EV_V1_OFFSET_P];
>
> x = get_unaligned_le16(buf + FINGER_EV_V1_OFFSET_X);
> @@ -995,7 +1002,8 @@ 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,
> --
> 1.9.1
>
--
Dmitry
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