diff options
author | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2024-04-08 02:53:52 +0300 |
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committer | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2024-04-19 04:27:29 +0300 |
commit | b724455e89ea9be900b81492897aadebcdc5ba92 (patch) | |
tree | 220677788be265dc1b1324f8e1194223863542cf /drivers/gpu/drm/drm_mipi_dsi.c | |
parent | de1c705c50326acaceaf1f02bc5bf6f267c572bd (diff) |
drm/mipi-dsi: add mipi_dsi_compression_mode_ext()
Add the extended version of mipi_dsi_compression_mode(). It provides
a way to specify the algorithm and PPS selector.
Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240408-lg-sw43408-panel-v5-3-4e092da22991@linaro.org
Diffstat (limited to 'drivers/gpu/drm/drm_mipi_dsi.c')
-rw-r--r-- | drivers/gpu/drm/drm_mipi_dsi.c | 41 |
1 files changed, 34 insertions, 7 deletions
diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c index 9874ff6d4718..795001bb7ff1 100644 --- a/drivers/gpu/drm/drm_mipi_dsi.c +++ b/drivers/gpu/drm/drm_mipi_dsi.c @@ -645,29 +645,56 @@ int mipi_dsi_set_maximum_return_packet_size(struct mipi_dsi_device *dsi, EXPORT_SYMBOL(mipi_dsi_set_maximum_return_packet_size); /** - * mipi_dsi_compression_mode() - enable/disable DSC on the peripheral + * mipi_dsi_compression_mode_ext() - enable/disable DSC on the peripheral * @dsi: DSI peripheral device * @enable: Whether to enable or disable the DSC + * @algo: Selected compression algorithm + * @pps_selector: Select PPS from the table of pre-stored or uploaded PPS entries * - * Enable or disable Display Stream Compression on the peripheral using the - * default Picture Parameter Set and VESA DSC 1.1 algorithm. + * Enable or disable Display Stream Compression on the peripheral. * * Return: 0 on success or a negative error code on failure. */ -int mipi_dsi_compression_mode(struct mipi_dsi_device *dsi, bool enable) +int mipi_dsi_compression_mode_ext(struct mipi_dsi_device *dsi, bool enable, + enum mipi_dsi_compression_algo algo, + unsigned int pps_selector) { - /* Note: Needs updating for non-default PPS or algorithm */ - u8 tx[2] = { enable << 0, 0 }; + u8 tx[2] = { }; struct mipi_dsi_msg msg = { .channel = dsi->channel, .type = MIPI_DSI_COMPRESSION_MODE, .tx_len = sizeof(tx), .tx_buf = tx, }; - int ret = mipi_dsi_device_transfer(dsi, &msg); + int ret; + + if (algo > 3 || pps_selector > 3) + return -EINVAL; + + tx[0] = (enable << 0) | + (algo << 1) | + (pps_selector << 4); + + ret = mipi_dsi_device_transfer(dsi, &msg); return (ret < 0) ? ret : 0; } +EXPORT_SYMBOL(mipi_dsi_compression_mode_ext); + +/** + * mipi_dsi_compression_mode() - enable/disable DSC on the peripheral + * @dsi: DSI peripheral device + * @enable: Whether to enable or disable the DSC + * + * Enable or disable Display Stream Compression on the peripheral using the + * default Picture Parameter Set and VESA DSC 1.1 algorithm. + * + * Return: 0 on success or a negative error code on failure. + */ +int mipi_dsi_compression_mode(struct mipi_dsi_device *dsi, bool enable) +{ + return mipi_dsi_compression_mode_ext(dsi, enable, MIPI_DSI_COMPRESSION_DSC, 0); +} EXPORT_SYMBOL(mipi_dsi_compression_mode); /** |