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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>
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@ -23,7 +23,7 @@
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#include <asm/unaligned.h>
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#define WDT87XX_NAME "wdt87xx_i2c"
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#define WDT87XX_DRV_VER "0.9.5"
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#define WDT87XX_DRV_VER "0.9.6"
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#define WDT87XX_FW_NAME "wdt87xx_fw.bin"
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#define WDT87XX_CFG_NAME "wdt87xx_cfg.bin"
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@ -83,6 +83,7 @@
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#define CTL_PARAM_OFFSET_PHY_Y1 18
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#define CTL_PARAM_OFFSET_PHY_W 22
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#define CTL_PARAM_OFFSET_PHY_H 24
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#define CTL_PARAM_OFFSET_FACTOR 32
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/* Communication commands */
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#define PACKET_SIZE 56
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@ -161,6 +162,7 @@ struct wdt87xx_sys_param {
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u16 phy_ch_y;
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u16 phy_w;
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u16 phy_h;
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u16 scaling_factor;
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u32 max_x;
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u32 max_y;
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};
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@ -401,7 +403,7 @@ static int wdt87xx_get_sysparam(struct i2c_client *client,
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u8 buf[PKT_READ_SIZE];
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int error;
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error = wdt87xx_get_string(client, STRIDX_PARAMETERS, buf, 32);
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error = wdt87xx_get_string(client, STRIDX_PARAMETERS, buf, 34);
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if (error) {
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dev_err(&client->dev, "failed to get parameters\n");
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return error;
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@ -414,6 +416,10 @@ static int wdt87xx_get_sysparam(struct i2c_client *client,
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param->phy_w = get_unaligned_le16(buf + CTL_PARAM_OFFSET_PHY_W) / 10;
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param->phy_h = get_unaligned_le16(buf + CTL_PARAM_OFFSET_PHY_H) / 10;
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/* Get the scaling factor of pixel to logical coordinate */
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param->scaling_factor =
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get_unaligned_le16(buf + CTL_PARAM_OFFSET_FACTOR);
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param->max_x = MAX_UNIT_AXIS;
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param->max_y = DIV_ROUND_CLOSEST(MAX_UNIT_AXIS * param->phy_h,
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param->phy_w);
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@ -905,8 +911,8 @@ static void wdt87xx_report_contact(struct input_dev *input,
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u8 *buf)
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{
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int finger_id;
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u32 x, y;
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u8 w, p;
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u32 x, y, w;
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u8 p;
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finger_id = (buf[FINGER_EV_V1_OFFSET_ID] >> 3) - 1;
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if (finger_id < 0)
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@ -917,6 +923,8 @@ static void wdt87xx_report_contact(struct input_dev *input,
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return;
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w = buf[FINGER_EV_V1_OFFSET_W];
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w *= param->scaling_factor;
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p = buf[FINGER_EV_V1_OFFSET_P];
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x = get_unaligned_le16(buf + FINGER_EV_V1_OFFSET_X);
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@ -995,7 +1003,8 @@ static int wdt87xx_ts_create_input_device(struct wdt87xx_data *wdt)
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input_abs_set_res(input, ABS_MT_POSITION_X, res);
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input_abs_set_res(input, ABS_MT_POSITION_Y, res);
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input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, 0xFF, 0, 0);
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input_set_abs_params(input, ABS_MT_TOUCH_MAJOR,
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0, wdt->param.max_x, 0, 0);
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input_set_abs_params(input, ABS_MT_PRESSURE, 0, 0xFF, 0, 0);
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input_mt_init_slots(input, WDT_MAX_FINGER,
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