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| author | Sebastian Reichel <sre@kernel.org> | 2023-07-14 04:37:47 +0300 |
|---|---|---|
| committer | Neil Armstrong <neil.armstrong@linaro.org> | 2023-08-01 11:29:56 +0300 |
| commit | a4b563b1d19dea9de366f81cae6342d80b663a45 (patch) | |
| tree | 4c8e3d2d307b647a1d80c937ee8c245e8eb67f3c /drivers/gpu/drm/panel/panel-sitronix-st7789v.c | |
| parent | 4098d1867f27de2443c33e116b064ad3082aecb9 (diff) | |
| download | linux-a4b563b1d19dea9de366f81cae6342d80b663a45.tar.xz | |
drm/panel: sitronix-st7789v: add media bus format
Add support for describing the media bus format in the
panel configuration and expose that to userspace. Since
both supported formats (RGB565 and RGB666) are using 6
bits per color also hardcode that information.
Reviewed-by: Michael Riesch <michael.riesch@wolfvision.net>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230714013756.1546769-11-sre@kernel.org
Diffstat (limited to 'drivers/gpu/drm/panel/panel-sitronix-st7789v.c')
| -rw-r--r-- | drivers/gpu/drm/panel/panel-sitronix-st7789v.c | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c index aa11a1dc0752..d05d7a9caefc 100644 --- a/drivers/gpu/drm/panel/panel-sitronix-st7789v.c +++ b/drivers/gpu/drm/panel/panel-sitronix-st7789v.c @@ -10,6 +10,7 @@ #include <linux/spi/spi.h> #include <video/mipi_display.h> +#include <linux/media-bus-format.h> #include <drm/drm_device.h> #include <drm/drm_modes.h> @@ -110,6 +111,7 @@ struct st7789_panel_info { const struct drm_display_mode *mode; + u32 bus_format; }; struct st7789v { @@ -169,6 +171,7 @@ static const struct drm_display_mode default_mode = { static const struct st7789_panel_info default_panel = { .mode = &default_mode, + .bus_format = MEDIA_BUS_FMT_RGB666_1X18, }; static int st7789v_get_modes(struct drm_panel *panel, @@ -190,8 +193,11 @@ static int st7789v_get_modes(struct drm_panel *panel, mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED; drm_mode_probed_add(connector, mode); + connector->display_info.bpc = 6; connector->display_info.width_mm = ctx->info->mode->width_mm; connector->display_info.height_mm = ctx->info->mode->height_mm; + drm_display_info_set_bus_formats(&connector->display_info, + &ctx->info->bus_format, 1); return 1; } @@ -199,8 +205,24 @@ static int st7789v_get_modes(struct drm_panel *panel, static int st7789v_prepare(struct drm_panel *panel) { struct st7789v *ctx = panel_to_st7789v(panel); + u8 pixel_fmt; int ret; + switch (ctx->info->bus_format) { + case MEDIA_BUS_FMT_RGB666_1X18: + pixel_fmt = MIPI_DCS_PIXEL_FMT_18BIT; + break; + case MEDIA_BUS_FMT_RGB565_1X16: + pixel_fmt = MIPI_DCS_PIXEL_FMT_16BIT; + break; + default: + dev_err(panel->dev, "unsupported bus format: %d\n", + ctx->info->bus_format); + return -EINVAL; + } + + pixel_fmt = (pixel_fmt << 4) | pixel_fmt; + ret = regulator_enable(ctx->power); if (ret) return ret; @@ -221,9 +243,7 @@ static int st7789v_prepare(struct drm_panel *panel) ST7789V_TEST(ret, st7789v_write_command(ctx, MIPI_DCS_SET_PIXEL_FORMAT)); - ST7789V_TEST(ret, st7789v_write_data(ctx, - (MIPI_DCS_PIXEL_FMT_18BIT << 4) | - (MIPI_DCS_PIXEL_FMT_18BIT))); + ST7789V_TEST(ret, st7789v_write_data(ctx, pixel_fmt)); ST7789V_TEST(ret, st7789v_write_command(ctx, ST7789V_PORCTRL_CMD)); ST7789V_TEST(ret, st7789v_write_data(ctx, 0xc)); |