Commit 4238e52c authored by Johnny Chuang's avatar Johnny Chuang Committed by Dmitry Torokhov

Input: elants_i2c - report resolution of ABS_MT_TOUCH_MAJOR by FW information.

This patch adds a new behavior to report touch major resolution
based on information provided by firmware.

In initial process, driver acquires touch information from touch ic.
It contains one byte about the resolution value of ABS_MT_TOUCH_MAJOR.
Touch driver will report touch major resolution by this information.
Signed-off-by: default avatarJohnny Chuang <johnny.chuang.emc@gmail.com>
Reviewed-by: default avatarHarry Cutts <hcutts@chromium.org>
Link: https://lore.kernel.org/r/1598581195-9874-1-git-send-email-johnny.chuang.emc@gmail.comSigned-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent f492ffe4
...@@ -134,6 +134,7 @@ struct elants_data { ...@@ -134,6 +134,7 @@ struct elants_data {
u8 bc_version; u8 bc_version;
u8 iap_version; u8 iap_version;
u16 hw_version; u16 hw_version;
u8 major_res;
unsigned int x_res; /* resolution in units/mm */ unsigned int x_res; /* resolution in units/mm */
unsigned int y_res; unsigned int y_res;
unsigned int x_max; unsigned int x_max;
...@@ -459,6 +460,9 @@ static int elants_i2c_query_ts_info(struct elants_data *ts) ...@@ -459,6 +460,9 @@ static int elants_i2c_query_ts_info(struct elants_data *ts)
rows = resp[2] + resp[6] + resp[10]; rows = resp[2] + resp[6] + resp[10];
cols = resp[3] + resp[7] + resp[11]; cols = resp[3] + resp[7] + resp[11];
/* Get report resolution value of ABS_MT_TOUCH_MAJOR */
ts->major_res = resp[16];
/* Process mm_to_pixel information */ /* Process mm_to_pixel information */
error = elants_i2c_execute_command(client, error = elants_i2c_execute_command(client,
get_osr_cmd, sizeof(get_osr_cmd), get_osr_cmd, sizeof(get_osr_cmd),
...@@ -1325,6 +1329,8 @@ static int elants_i2c_probe(struct i2c_client *client, ...@@ -1325,6 +1329,8 @@ static int elants_i2c_probe(struct i2c_client *client,
0, MT_TOOL_PALM, 0, 0); 0, MT_TOOL_PALM, 0, 0);
input_abs_set_res(ts->input, ABS_MT_POSITION_X, ts->x_res); input_abs_set_res(ts->input, ABS_MT_POSITION_X, ts->x_res);
input_abs_set_res(ts->input, ABS_MT_POSITION_Y, ts->y_res); input_abs_set_res(ts->input, ABS_MT_POSITION_Y, ts->y_res);
if (ts->major_res > 0)
input_abs_set_res(ts->input, ABS_MT_TOUCH_MAJOR, ts->major_res);
touchscreen_parse_properties(ts->input, true, &ts->prop); touchscreen_parse_properties(ts->input, true, &ts->prop);
......
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