drm/msm/dsi-staging: add dsc support to dsi driver
Patch adds display stream compression support to dsi driver
for both video and command modes. Calculates dsc parameters
and sends PPS to the panel. Provides dsc configuration
settings to msm drm driver.
Change-Id: Ib5baf52e8ba5f5c3c9b6e439f86efd6d7c6397d1
Signed-off-by: Alexander Beykun <abeykun@codeaurora.org>
Signed-off-by: Jeykumar Sankaran <jsanka@codeaurora.org>
Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>
diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
index e86014d..817fcd2 100644
--- a/drivers/gpu/drm/msm/msm_drv.h
+++ b/drivers/gpu/drm/msm/msm_drv.h
@@ -166,15 +166,15 @@
#define MAX_H_TILES_PER_DISPLAY 2
/**
- * enum msm_display_compression - compression method used for pixel stream
- * @MSM_DISPLAY_COMPRESS_NONE: Pixel data is not compressed
- * @MSM_DISPLAY_COMPRESS_DSC: DSC compresison is used
- * @MSM_DISPLAY_COMPRESS_FBC: FBC compression is used
+ * enum msm_display_compression_type - compression method used for pixel stream
+ * @MSM_DISPLAY_COMPRESSION_NONE: Pixel data is not compressed
+ * @MSM_DISPLAY_COMPRESSION_DSC: DSC compresison is used
+ * @MSM_DISPLAY_COMPRESSION_FBC: FBC compression is used
*/
-enum msm_display_compression {
- MSM_DISPLAY_COMPRESS_NONE,
- MSM_DISPLAY_COMPRESS_DSC,
- MSM_DISPLAY_COMPRESS_FBC,
+enum msm_display_compression_type {
+ MSM_DISPLAY_COMPRESSION_NONE,
+ MSM_DISPLAY_COMPRESSION_DSC,
+ MSM_DISPLAY_COMPRESSION_FBC,
};
/**
@@ -192,6 +192,125 @@
};
/**
+ * struct msm_display_dsc_info - defines dsc configuration
+ * @version: DSC version.
+ * @scr_rev: DSC revision.
+ * @pic_height: Picture height in pixels.
+ * @pic_width: Picture width in pixels.
+ * @initial_lines: Number of initial lines stored in encoder.
+ * @pkt_per_line: Number of packets per line.
+ * @bytes_in_slice: Number of bytes in slice.
+ * @eol_byte_num: Valid bytes at the end of line.
+ * @pclk_per_line: Compressed width.
+ * @full_frame_slices: Number of slice per interface.
+ * @slice_height: Slice height in pixels.
+ * @slice_width: Slice width in pixels.
+ * @chunk_size: Chunk size in bytes for slice multiplexing.
+ * @slice_last_group_size: Size of last group in pixels.
+ * @bpp: Target bits per pixel.
+ * @bpc: Number of bits per component.
+ * @line_buf_depth: Line buffer bit depth.
+ * @block_pred_enable: Block prediction enabled/disabled.
+ * @vbr_enable: VBR mode.
+ * @enable_422: Indicates if input uses 4:2:2 sampling.
+ * @convert_rgb: DSC color space conversion.
+ * @input_10_bits: 10 bit per component input.
+ * @slice_per_pkt: Number of slices per packet.
+ * @initial_dec_delay: Initial decoding delay.
+ * @initial_xmit_delay: Initial transmission delay.
+ * @initial_scale_value: Scale factor value at the beginning of a slice.
+ * @scale_decrement_interval: Scale set up at the beginning of a slice.
+ * @scale_increment_interval: Scale set up at the end of a slice.
+ * @first_line_bpg_offset: Extra bits allocated on the first line of a slice.
+ * @nfl_bpg_offset: Slice specific settings.
+ * @slice_bpg_offset: Slice specific settings.
+ * @initial_offset: Initial offset at the start of a slice.
+ * @final_offset: Maximum end-of-slice value.
+ * @rc_model_size: Number of bits in RC model.
+ * @det_thresh_flatness: Flatness threshold.
+ * @max_qp_flatness: Maximum QP for flatness adjustment.
+ * @min_qp_flatness: Minimum QP for flatness adjustment.
+ * @edge_factor: Ratio to detect presence of edge.
+ * @quant_incr_limit0: QP threshold.
+ * @quant_incr_limit1: QP threshold.
+ * @tgt_offset_hi: Upper end of variability range.
+ * @tgt_offset_lo: Lower end of variability range.
+ * @buf_thresh: Thresholds in RC model
+ * @range_min_qp: Min QP allowed.
+ * @range_max_qp: Max QP allowed.
+ * @range_bpg_offset: Bits per group adjustment.
+ */
+struct msm_display_dsc_info {
+ u8 version;
+ u8 scr_rev;
+
+ int pic_height;
+ int pic_width;
+ int slice_height;
+ int slice_width;
+
+ int initial_lines;
+ int pkt_per_line;
+ int bytes_in_slice;
+ int bytes_per_pkt;
+ int eol_byte_num;
+ int pclk_per_line;
+ int full_frame_slices;
+ int slice_last_group_size;
+ int bpp;
+ int bpc;
+ int line_buf_depth;
+
+ int slice_per_pkt;
+ int chunk_size;
+ bool block_pred_enable;
+ int vbr_enable;
+ int enable_422;
+ int convert_rgb;
+ int input_10_bits;
+
+ int initial_dec_delay;
+ int initial_xmit_delay;
+ int initial_scale_value;
+ int scale_decrement_interval;
+ int scale_increment_interval;
+ int first_line_bpg_offset;
+ int nfl_bpg_offset;
+ int slice_bpg_offset;
+ int initial_offset;
+ int final_offset;
+
+ int rc_model_size;
+ int det_thresh_flatness;
+ int max_qp_flatness;
+ int min_qp_flatness;
+ int edge_factor;
+ int quant_incr_limit0;
+ int quant_incr_limit1;
+ int tgt_offset_hi;
+ int tgt_offset_lo;
+
+ u32 *buf_thresh;
+ char *range_min_qp;
+ char *range_max_qp;
+ char *range_bpg_offset;
+};
+
+/**
+ * struct msm_compression_info - defined panel compression
+ * @comp_type: type of compression supported
+ * @dsc_info: dsc configuration if the compression
+ * supported is DSC
+ */
+struct msm_compression_info {
+ enum msm_display_compression_type comp_type;
+
+ union{
+ struct msm_display_dsc_info dsc_info;
+ };
+};
+
+/**
* struct msm_display_info - defines display properties
* @intf_type: DRM_MODE_CONNECTOR_ display type
* @capabilities: Bitmask of display flags
@@ -210,7 +329,7 @@
* @prefill_lines: prefill lines based on porches.
* @vtotal: display vertical total
* @jitter: display jitter configuration
- * @compression: Compression supported by the display
+ * @comp_info: Compression supported by the display
*/
struct msm_display_info {
int intf_type;
@@ -233,7 +352,7 @@
uint32_t vtotal;
uint32_t jitter;
- enum msm_display_compression compression;
+ struct msm_compression_info comp_info;
};
/**