diff options
| author | Dave Stevenson <dave.stevenson@raspberrypi.com> | 2022-06-13 16:47:36 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-03-11 16:31:39 +0100 |
| commit | 4ede4f40c3eeba0ef6f06894e7fcd36f84f790d3 (patch) | |
| tree | ab08ba701d7240700cc25484f264fa35e99d0e9f | |
| parent | f91e8a49f4ec647efefa1a953debfe6b2f956209 (diff) | |
drm/vc4: dpi: Add option for inverting pixel clock and output enable
[ Upstream commit 3c2707632146b22e97b0fbf6778bab8add2eaa1d ]
DRM provides flags for inverting pixel clock and output enable
signals, but these were not mapped to the relevant registers.
Add those mappings.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Link: https://lore.kernel.org/r/20220613144800.326124-10-maxime@cerno.tech
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Stable-dep-of: 0870d86eac8a ("drm/vc4: dpi: Fix format mapping for RGB565")
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/gpu/drm/vc4/vc4_dpi.c | 66 |
1 files changed, 38 insertions, 28 deletions
diff --git a/drivers/gpu/drm/vc4/vc4_dpi.c b/drivers/gpu/drm/vc4/vc4_dpi.c index f185812970da..2e6608c57a11 100644 --- a/drivers/gpu/drm/vc4/vc4_dpi.c +++ b/drivers/gpu/drm/vc4/vc4_dpi.c @@ -186,35 +186,45 @@ static void vc4_dpi_encoder_enable(struct drm_encoder *encoder) } drm_connector_list_iter_end(&conn_iter); - if (connector && connector->display_info.num_bus_formats) { - u32 bus_format = connector->display_info.bus_formats[0]; - - switch (bus_format) { - case MEDIA_BUS_FMT_RGB888_1X24: - dpi_c |= VC4_SET_FIELD(DPI_FORMAT_24BIT_888_RGB, - DPI_FORMAT); - break; - case MEDIA_BUS_FMT_BGR888_1X24: - dpi_c |= VC4_SET_FIELD(DPI_FORMAT_24BIT_888_RGB, - DPI_FORMAT); - dpi_c |= VC4_SET_FIELD(DPI_ORDER_BGR, DPI_ORDER); - break; - case MEDIA_BUS_FMT_RGB666_1X24_CPADHI: - dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_2, - DPI_FORMAT); - break; - case MEDIA_BUS_FMT_RGB666_1X18: - dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_1, - DPI_FORMAT); - break; - case MEDIA_BUS_FMT_RGB565_1X16: - dpi_c |= VC4_SET_FIELD(DPI_FORMAT_16BIT_565_RGB_3, - DPI_FORMAT); - break; - default: - DRM_ERROR("Unknown media bus format %d\n", bus_format); - break; + if (connector) { + if (connector->display_info.num_bus_formats) { + u32 bus_format = connector->display_info.bus_formats[0]; + + switch (bus_format) { + case MEDIA_BUS_FMT_RGB888_1X24: + dpi_c |= VC4_SET_FIELD(DPI_FORMAT_24BIT_888_RGB, + DPI_FORMAT); + break; + case MEDIA_BUS_FMT_BGR888_1X24: + dpi_c |= VC4_SET_FIELD(DPI_FORMAT_24BIT_888_RGB, + DPI_FORMAT); + dpi_c |= VC4_SET_FIELD(DPI_ORDER_BGR, + DPI_ORDER); + break; + case MEDIA_BUS_FMT_RGB666_1X24_CPADHI: + dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_2, + DPI_FORMAT); + break; + case MEDIA_BUS_FMT_RGB666_1X18: + dpi_c |= VC4_SET_FIELD(DPI_FORMAT_18BIT_666_RGB_1, + DPI_FORMAT); + break; + case MEDIA_BUS_FMT_RGB565_1X16: + dpi_c |= VC4_SET_FIELD(DPI_FORMAT_16BIT_565_RGB_3, + DPI_FORMAT); + break; + default: + DRM_ERROR("Unknown media bus format %d\n", + bus_format); + break; + } } + + if (connector->display_info.bus_flags & DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE) + dpi_c |= DPI_PIXEL_CLK_INVERT; + + if (connector->display_info.bus_flags & DRM_BUS_FLAG_DE_LOW) + dpi_c |= DPI_OUTPUT_ENABLE_INVERT; } else { /* Default to 24bit if no connector found. */ dpi_c |= VC4_SET_FIELD(DPI_FORMAT_24BIT_888_RGB, DPI_FORMAT); |