Re: [PATCH 3/3] Input: goodix - add a settings module-parameter
From: Bastien Nocera <hadess@hadess.net>
Date: 2021-06-14 08:49:02
On Sun, 2021-06-13 at 12:21 +0200, Hans de Goede wrote:
Add a settings module-parameter which can be allowed to specify/override various device-properties. Usuually Goodix touchscreens on x86 devices (where there is no devicetree to specify the properties) just work. But in some cases the touchscreen is mounted 90 or 180 degrees rotated vs the display, requiring setting the touchscreen-x/y-inverted or touchscreen-swapped-x-y properties. Being able to specify the necessary properties through a module parameter, allows users of new device-models to help us with bringing up support for new devices without them needing to do a local kernel-build just to modify these settings. Signed-off-by: Hans de Goede <redacted>
Reviewed-by: Bastien Nocera <hadess@hadess.net>
quoted hunk ↗ jump to hunk
--- drivers/input/touchscreen/goodix.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)diff --git a/drivers/input/touchscreen/goodix.cb/drivers/input/touchscreen/goodix.c index 2efb82977115..1bc94c5597ca 100644--- a/drivers/input/touchscreen/goodix.c +++ b/drivers/input/touchscreen/goodix.c@@ -52,6 +52,10 @@#define ACPI_GPIO_SUPPORT #endif +static char *settings; +module_param(settings, charp, 0444); +MODULE_PARM_DESC(settings, "Override touchscreen settings using a ; separated key=value list, e.g. \"touchscreen-fuzz-x=5;touchscreen- fuzz-y=5;touchscreen-swapped-x-y\""); + struct goodix_chip_id { const char *id; const struct goodix_chip_data *data;@@ -1026,7 +1030,7 @@ static int goodix_configure_dev(structgoodix_ts_data *ts) goodix_read_config(ts); /* Try overriding touchscreen parameters via device properties */ - touchscreen_parse_properties(ts->input_dev, true, &ts->prop, NULL); + touchscreen_parse_properties(ts->input_dev, true, &ts->prop, settings); if (!ts->prop.max_x || !ts->prop.max_y || !ts->max_touch_num) { dev_err(&ts->client->dev,