diff options
| author | David Heidelberg <david@ixit.cz> | 2025-12-14 17:51:20 +0300 |
|---|---|---|
| committer | Neil Armstrong <neil.armstrong@linaro.org> | 2025-12-16 13:21:33 +0300 |
| commit | 5f0cc92fa0dab7cbb999dedc653f5857a62b2022 (patch) | |
| tree | 1de407cda7bafe71433a8031725b7c0c2083c5df | |
| parent | be85d4124dbe6ed597c7a6a16e53d8b98684fab6 (diff) | |
| download | linux-5f0cc92fa0dab7cbb999dedc653f5857a62b2022.tar.xz | |
drm/panel: sw43408: Separate reset sequence into own function
Splitting reset() from prepare() follows clean coding practices and lets
us potentially make reset optional in the future for flicker-less
takeover from a bootloader or framebuffer driver where the panel is
already configured.
Signed-off-by: David Heidelberg <david@ixit.cz>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20251214-pixel-3-v7-4-b1c0cf6f224d@ixit.cz
| -rw-r--r-- | drivers/gpu/drm/panel/panel-lg-sw43408.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/drivers/gpu/drm/panel/panel-lg-sw43408.c b/drivers/gpu/drm/panel/panel-lg-sw43408.c index dcca7873acf8..ed9c7452ea84 100644 --- a/drivers/gpu/drm/panel/panel-lg-sw43408.c +++ b/drivers/gpu/drm/panel/panel-lg-sw43408.c @@ -119,6 +119,16 @@ static int sw43408_program(struct drm_panel *panel) return ctx.accum_err; } +static void sw43408_reset(struct sw43408_panel *ctx) +{ + gpiod_set_value(ctx->reset_gpio, 0); + usleep_range(9000, 10000); + gpiod_set_value(ctx->reset_gpio, 1); + usleep_range(1000, 2000); + gpiod_set_value(ctx->reset_gpio, 0); + usleep_range(9000, 10000); +} + static int sw43408_prepare(struct drm_panel *panel) { struct sw43408_panel *ctx = to_panel_info(panel); @@ -130,12 +140,7 @@ static int sw43408_prepare(struct drm_panel *panel) usleep_range(5000, 6000); - gpiod_set_value(ctx->reset_gpio, 0); - usleep_range(9000, 10000); - gpiod_set_value(ctx->reset_gpio, 1); - usleep_range(1000, 2000); - gpiod_set_value(ctx->reset_gpio, 0); - usleep_range(9000, 10000); + sw43408_reset(ctx); ret = sw43408_program(panel); if (ret) |