| Message ID | 20240408-lg-sw43408-panel-v5-3-4e092da22991@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm/panel: add support for LG SW43408 panel | expand |
On 2024-04-08 02:53:52, Dmitry Baryshkov wrote: > Add the extended version of mipi_dsi_compression_mode(). It provides > a way to specify the algorithm and PPS selector. > > Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org> Something doesn't stick with me on the _ext() naming, but I don't have something better to propose. - Marijn > --- > drivers/gpu/drm/drm_mipi_dsi.c | 41 ++++++++++++++++++++++++++++++++++------- > include/drm/drm_mipi_dsi.h | 9 +++++++++ > 2 files changed, 43 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); > > /** > diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h > index 3011d33eccbd..82b1cc434ea3 100644 > --- a/include/drm/drm_mipi_dsi.h > +++ b/include/drm/drm_mipi_dsi.h > @@ -226,6 +226,12 @@ static inline int mipi_dsi_pixel_format_to_bpp(enum mipi_dsi_pixel_format fmt) > return -EINVAL; > } > > +enum mipi_dsi_compression_algo { > + MIPI_DSI_COMPRESSION_DSC = 0, > + MIPI_DSI_COMPRESSION_VENDOR = 3, > + /* other two values are reserved, DSI 1.3 */ > +}; > + > struct mipi_dsi_device * > mipi_dsi_device_register_full(struct mipi_dsi_host *host, > const struct mipi_dsi_device_info *info); > @@ -242,6 +248,9 @@ int mipi_dsi_turn_on_peripheral(struct mipi_dsi_device *dsi); > int mipi_dsi_set_maximum_return_packet_size(struct mipi_dsi_device *dsi, > u16 value); > 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); > int mipi_dsi_picture_parameter_set(struct mipi_dsi_device *dsi, > const struct drm_dsc_picture_parameter_set *pps); > > > -- > 2.39.2 >
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); /** diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h index 3011d33eccbd..82b1cc434ea3 100644 --- a/include/drm/drm_mipi_dsi.h +++ b/include/drm/drm_mipi_dsi.h @@ -226,6 +226,12 @@ static inline int mipi_dsi_pixel_format_to_bpp(enum mipi_dsi_pixel_format fmt) return -EINVAL; } +enum mipi_dsi_compression_algo { + MIPI_DSI_COMPRESSION_DSC = 0, + MIPI_DSI_COMPRESSION_VENDOR = 3, + /* other two values are reserved, DSI 1.3 */ +}; + struct mipi_dsi_device * mipi_dsi_device_register_full(struct mipi_dsi_host *host, const struct mipi_dsi_device_info *info); @@ -242,6 +248,9 @@ int mipi_dsi_turn_on_peripheral(struct mipi_dsi_device *dsi); int mipi_dsi_set_maximum_return_packet_size(struct mipi_dsi_device *dsi, u16 value); 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); int mipi_dsi_picture_parameter_set(struct mipi_dsi_device *dsi, const struct drm_dsc_picture_parameter_set *pps);
Add the extended version of mipi_dsi_compression_mode(). It provides a way to specify the algorithm and PPS selector. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> --- drivers/gpu/drm/drm_mipi_dsi.c | 41 ++++++++++++++++++++++++++++++++++------- include/drm/drm_mipi_dsi.h | 9 +++++++++ 2 files changed, 43 insertions(+), 7 deletions(-)