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| author | Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> | 2025-06-09 23:56:28 +0100 |
|---|---|---|
| committer | Biju Das <biju.das.jz@bp.renesas.com> | 2025-06-12 19:42:28 +0100 |
| commit | a56a6b81d80fdf876a5ee6e441a6c8a0052f6f37 (patch) | |
| tree | ff53767b936bd1723f458c2c3f0ce906495b5cb3 | |
| parent | 7c3fecdd12d6487e1229f00bfeffccabd1f011f8 (diff) | |
drm: renesas: rz-du: mipi_dsi: Add feature flag for 16BPP support
Introduce the `RZ_MIPI_DSI_FEATURE_16BPP` flag in `rzg2l_mipi_dsi_hw_info`
to indicate support for 16BPP pixel formats. The RZ/V2H(P) SoC supports
16BPP, whereas this feature is missing on the RZ/G2L SoC.
Update the `mipi_dsi_host_attach()` function to check this flag before
allowing 16BPP formats. If the SoC does not support 16BPP, return an error
to prevent incorrect format selection.
This change enables finer-grained format support control for different
SoC variants.
Co-developed-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
Signed-off-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20250609225630.502888-8-prabhakar.mahadev-lad.rj@bp.renesas.com
| -rw-r--r-- | drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c b/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c index 004911240cef..afb427e678bd 100644 --- a/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c +++ b/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c @@ -34,6 +34,8 @@ #define RZG2L_DCS_BUF_SIZE 128 /* Maximum DCS buffer size in external memory. */ +#define RZ_MIPI_DSI_FEATURE_16BPP BIT(0) + struct rzg2l_mipi_dsi; struct rzg2l_mipi_dsi_hw_info { @@ -43,6 +45,7 @@ struct rzg2l_mipi_dsi_hw_info { u32 link_reg_offset; unsigned long min_dclk; unsigned long max_dclk; + u8 features; }; struct rzg2l_mipi_dsi { @@ -672,8 +675,16 @@ static int rzg2l_mipi_dsi_host_attach(struct mipi_dsi_host *host, switch (mipi_dsi_pixel_format_to_bpp(device->format)) { case 24: + break; case 18: break; + case 16: + if (!(dsi->info->features & RZ_MIPI_DSI_FEATURE_16BPP)) { + dev_err(dsi->dev, "Unsupported format 0x%04x\n", + device->format); + return -EINVAL; + } + break; default: dev_err(dsi->dev, "Unsupported format 0x%04x\n", device->format); return -EINVAL; |