Add support for DSC 1.2 by providing the necessary hooks to program
the DPU DSC 1.2 encoder.
Changes in v3:
-- fixed kernel test rebot report that "__iomem *off" is declared but
not
used at dpu_hw_dsc_config_1_2()
-- unrolling thresh loops
Changes in v4:
-- delete DPU_DSC_HW_REV_1_1
-- delete off and used real register name directly
Changes in v7:
-- replace offset with sblk->enc.base
-- replace ss with slice
Changes in v8:
-- fixed checkpatch warning
Signed-off-by: Kuogee Hsieh <quic_khsieh@xxxxxxxxxxx>
---
drivers/gpu/drm/msm/Makefile | 1 +
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h | 32 ++-
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h | 14 +-
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc_1_2.c | 382
+++++++++++++++++++++++++
drivers/gpu/drm/msm/disp/dpu1/dpu_rm.c | 7 +-
5 files changed, 432 insertions(+), 4 deletions(-)
create mode 100644 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc_1_2.c
diff --git a/drivers/gpu/drm/msm/Makefile b/drivers/gpu/drm/msm/Makefile
index b814fc8..b9af5e4 100644
--- a/drivers/gpu/drm/msm/Makefile
+++ b/drivers/gpu/drm/msm/Makefile
@@ -65,6 +65,7 @@ msm-$(CONFIG_DRM_MSM_DPU) += \
disp/dpu1/dpu_hw_catalog.o \
disp/dpu1/dpu_hw_ctl.o \
disp/dpu1/dpu_hw_dsc.o \
+ disp/dpu1/dpu_hw_dsc_1_2.o \
disp/dpu1/dpu_hw_interrupts.o \
disp/dpu1/dpu_hw_intf.o \
disp/dpu1/dpu_hw_lm.o \
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
index dc0a4da..4eda2cc 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.h
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
- * Copyright (c) 2022. Qualcomm Innovation Center, Inc. All rights
reserved.
+ * Copyright (c) 2022-2023, Qualcomm Innovation Center, Inc. All
rights reserved.
* Copyright (c) 2015-2018, 2020 The Linux Foundation. All rights
reserved.
*/
@@ -244,12 +244,18 @@ enum {
};
/**
- * DSC features
+ * DSC sub-blocks/features
* @DPU_DSC_OUTPUT_CTRL Configure which PINGPONG block gets
* the pixel output from this DSC.
+ * @DPU_DSC_HW_REV_1_2 DSC block supports dsc 1.1 and 1.2
+ * @DPU_DSC_NATIVE_422_EN Supports native422 and native420 encoding
+ * @DPU_DSC_MAX
*/
enum {
DPU_DSC_OUTPUT_CTRL = 0x1,
+ DPU_DSC_HW_REV_1_2,
+ DPU_DSC_NATIVE_422_EN,
+ DPU_DSC_MAX
};
/**
@@ -306,6 +312,14 @@ struct dpu_pp_blk {
};
/**
+ * struct dpu_dsc_blk - DSC Encoder sub-blk information
+ * @info: HW register and features supported by this sub-blk
+ */
+struct dpu_dsc_blk {
+ DPU_HW_SUBBLK_INFO;
+};
+
+/**
* enum dpu_qos_lut_usage - define QoS LUT use cases
*/
enum dpu_qos_lut_usage {
@@ -452,6 +466,17 @@ struct dpu_pingpong_sub_blks {
};
/**
+ * struct dpu_dsc_sub_blks - DSC sub-blks
+ * @enc: DSC encoder sub block
+ * @ctl: DSC controller sub block
+ *
+ */
+struct dpu_dsc_sub_blks {
+ struct dpu_dsc_blk enc;
+ struct dpu_dsc_blk ctl;
+};
+
+/**
* dpu_clk_ctrl_type - Defines top level clock control signals
*/
enum dpu_clk_ctrl_type {
@@ -605,10 +630,13 @@ struct dpu_merge_3d_cfg {
* struct dpu_dsc_cfg - information of DSC blocks
* @id enum identifying this block
* @base register offset of this block
+ * @len: length of hardware block
* @features bit mask identifying sub-blocks/features
+ * @sblk sub-blocks information
*/
struct dpu_dsc_cfg {
DPU_HW_BLK_INFO;
+ const struct dpu_dsc_sub_blks *sblk;
};
/**
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h
b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h
index 138080a..44fd624 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.h
@@ -1,5 +1,8 @@
/* SPDX-License-Identifier: GPL-2.0-only */
-/* Copyright (c) 2020-2022, Linaro Limited */
+/*
+ * Copyright (c) 2020-2022, Linaro Limited
+ * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights
reserved
+ */
#ifndef _DPU_HW_DSC_H
#define _DPU_HW_DSC_H
@@ -69,6 +72,15 @@ struct dpu_hw_dsc *dpu_hw_dsc_init(const struct
dpu_dsc_cfg *cfg,
void __iomem *addr);
/**
+ * dpu_hw_dsc_init_1_2 - initializes the v1.2 DSC hw driver block
+ * @cfg: DSC catalog entry for which driver object is required
+ * @addr: Mapped register io address of MDP
+ * Returns: Error code or allocated dpu_hw_dsc context
+ */
+struct dpu_hw_dsc *dpu_hw_dsc_init_1_2(const struct dpu_dsc_cfg *cfg,
+ void __iomem *addr);
+
+/**
* dpu_hw_dsc_destroy - destroys dsc driver context
* @dsc: Pointer to dsc driver context returned by dpu_hw_dsc_init
*/
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc_1_2.c
b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc_1_2.c
new file mode 100644
index 00000000..5bd84bd
--- /dev/null
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc_1_2.c
@@ -0,0 +1,382 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2020-2021, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights
reserved
+ */
+
+#include <drm/display/drm_dsc_helper.h>
+
+#include "dpu_kms.h"
+#include "dpu_hw_catalog.h"
+#include "dpu_hwio.h"
+#include "dpu_hw_mdss.h"
+#include "dpu_hw_dsc.h"
+
+#define DSC_CMN_MAIN_CNF 0x00
+
+/* DPU_DSC_ENC register offsets */
+#define ENC_DF_CTRL 0x00
+#define ENC_GENERAL_STATUS 0x04
+#define ENC_HSLICE_STATUS 0x08
+#define ENC_OUT_STATUS 0x0C
+#define ENC_INT_STAT 0x10
+#define ENC_INT_CLR 0x14
+#define ENC_INT_MASK 0x18
+#define DSC_MAIN_CONF 0x30
+#define DSC_PICTURE_SIZE 0x34
+#define DSC_SLICE_SIZE 0x38
+#define DSC_MISC_SIZE 0x3C
+#define DSC_HRD_DELAYS 0x40
+#define DSC_RC_SCALE 0x44
+#define DSC_RC_SCALE_INC_DEC 0x48
+#define DSC_RC_OFFSETS_1 0x4C
+#define DSC_RC_OFFSETS_2 0x50
+#define DSC_RC_OFFSETS_3 0x54
+#define DSC_RC_OFFSETS_4 0x58
+#define DSC_FLATNESS_QP 0x5C
+#define DSC_RC_MODEL_SIZE 0x60
+#define DSC_RC_CONFIG 0x64
+#define DSC_RC_BUF_THRESH_0 0x68
+#define DSC_RC_BUF_THRESH_1 0x6C
+#define DSC_RC_BUF_THRESH_2 0x70
+#define DSC_RC_BUF_THRESH_3 0x74
+#define DSC_RC_MIN_QP_0 0x78
+#define DSC_RC_MIN_QP_1 0x7C
+#define DSC_RC_MIN_QP_2 0x80
+#define DSC_RC_MAX_QP_0 0x84
+#define DSC_RC_MAX_QP_1 0x88
+#define DSC_RC_MAX_QP_2 0x8C
+#define DSC_RC_RANGE_BPG_OFFSETS_0 0x90
+#define DSC_RC_RANGE_BPG_OFFSETS_1 0x94
+#define DSC_RC_RANGE_BPG_OFFSETS_2 0x98
+
+/* DPU_DSC_CTL register offsets */
+#define DSC_CTL 0x00
+#define DSC_CFG 0x04
+#define DSC_DATA_IN_SWAP 0x08
+#define DSC_CLK_CTRL 0x0C
+
+static inline int _dsc_calc_ob_max_addr(struct dpu_hw_dsc *hw_dsc,
int num_ss)
+{
+ int max_addr = 2400 / num_ss;
+
+ if (hw_dsc->caps->features & BIT(DPU_DSC_NATIVE_422_EN))
+ max_addr /= 2;
+
+ return max_addr - 1;
+};
+
+static inline void dpu_hw_dsc_disable_1_2(struct dpu_hw_dsc *hw_dsc)
+{
+ struct dpu_hw_blk_reg_map *hw;
+ const struct dpu_dsc_sub_blks *sblk;
+
+ if (!hw_dsc)
+ return;
+
+ hw = &hw_dsc->hw;
+ sblk = hw_dsc->caps->sblk;
+ DPU_REG_WRITE(hw, sblk->ctl.base + DSC_CFG, 0);
+
+ DPU_REG_WRITE(hw, sblk->enc.base + ENC_DF_CTRL, 0);
+ DPU_REG_WRITE(hw, sblk->enc.base + DSC_MAIN_CONF, 0);
+}
+
+static inline void dpu_hw_dsc_config_1_2(struct dpu_hw_dsc *hw_dsc,
+ struct drm_dsc_config *dsc,
+ u32 mode,
+ u32 initial_lines)
+{
+ struct dpu_hw_blk_reg_map *hw;
+ const struct dpu_dsc_sub_blks *sblk;
+ u32 data = 0;
+ u32 det_thresh_flatness;
+ u32 num_active_slice_per_enc;
+ u32 bpp;
+
+ if (!hw_dsc || !dsc)
+ return;
+
+ hw = &hw_dsc->hw;
+
+ sblk = hw_dsc->caps->sblk;
+
+ if (mode & DSC_MODE_SPLIT_PANEL)
+ data |= BIT(0);
+
+ if (mode & DSC_MODE_MULTIPLEX)
+ data |= BIT(1);
+
+ num_active_slice_per_enc = dsc->slice_count;
+ if (mode & DSC_MODE_MULTIPLEX)
+ num_active_slice_per_enc = dsc->slice_count >> 1;
+
+ data |= (num_active_slice_per_enc & 0x3) << 7;
+
+ DPU_REG_WRITE(hw, DSC_CMN_MAIN_CNF, data);
+
+ data = (initial_lines & 0xff);
+
+ if (mode & DSC_MODE_VIDEO)
+ data |= BIT(9);
+
+ data |= (_dsc_calc_ob_max_addr(hw_dsc, num_active_slice_per_enc)
<< 18);
+
+ DPU_REG_WRITE(hw, sblk->enc.base + ENC_DF_CTRL, data);
+
+ data = (dsc->dsc_version_minor & 0xf) << 28;
+ if (dsc->dsc_version_minor == 0x2) {
+ if (dsc->native_422)
+ data |= BIT(22);
+ if (dsc->native_420)
+ data |= BIT(21);
+ }
+
+ bpp = dsc->bits_per_pixel;
+ /* as per hw requirement bpp should be programmed
+ * twice the actual value in case of 420 or 422 encoding
+ */
+ if (dsc->native_422 || dsc->native_420)
+ bpp = 2 * bpp;
+ data |= (dsc->block_pred_enable ? 1 : 0) << 20;
+ data |= bpp << 10;
+ data |= (dsc->line_buf_depth & 0xf) << 6;
+ data |= dsc->convert_rgb << 4;
+ data |= dsc->bits_per_component & 0xf;
+
+ DPU_REG_WRITE(hw, sblk->enc.base + DSC_MAIN_CONF, data);
+
+ data = (dsc->pic_width & 0xffff) |
+ ((dsc->pic_height & 0xffff) << 16);
+
+ DPU_REG_WRITE(hw, sblk->enc.base + DSC_PICTURE_SIZE, data);
+
+ data = (dsc->slice_width & 0xffff) |
+ ((dsc->slice_height & 0xffff) << 16);
+
+ DPU_REG_WRITE(hw, sblk->enc.base + DSC_SLICE_SIZE, data);
+
+ DPU_REG_WRITE(hw, sblk->enc.base + DSC_MISC_SIZE,
+ (dsc->slice_chunk_size) & 0xffff);
+
+ data = (dsc->initial_xmit_delay & 0xffff) |
+ ((dsc->initial_dec_delay & 0xffff) << 16);
+
+ DPU_REG_WRITE(hw, sblk->enc.base + DSC_HRD_DELAYS, data);
+
+ DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_SCALE,
+ dsc->initial_scale_value & 0x3f);
+
+ data = (dsc->scale_increment_interval & 0xffff) |
+ ((dsc->scale_decrement_interval & 0x7ff) << 16);
+
+ DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_SCALE_INC_DEC, data);
+
+ data = (dsc->first_line_bpg_offset & 0x1f) |
+ ((dsc->second_line_bpg_offset & 0x1f) << 5);
+
+ DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_OFFSETS_1, data);
+
+ data = (dsc->nfl_bpg_offset & 0xffff) |
+ ((dsc->slice_bpg_offset & 0xffff) << 16);
+
+ DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_OFFSETS_2, data);
+
+ data = (dsc->initial_offset & 0xffff) |
+ ((dsc->final_offset & 0xffff) << 16);
+
+ DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_OFFSETS_3, data);
+
+ data = (dsc->nsl_bpg_offset & 0xffff) |
+ ((dsc->second_line_offset_adj & 0xffff) << 16);
+
+ DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_OFFSETS_4, data);
+
+ data = (dsc->flatness_min_qp & 0x1f);
+ data |= (dsc->flatness_max_qp & 0x1f) << 5;
+
+ det_thresh_flatness = drm_dsc_calculate_flatness_det_thresh(dsc);
+ data |= (det_thresh_flatness & 0xff) << 10;
+
+ DPU_REG_WRITE(hw, sblk->enc.base + DSC_FLATNESS_QP, data);
+
+ DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_MODEL_SIZE,
+ (dsc->rc_model_size) & 0xffff);
+
+ data = dsc->rc_edge_factor & 0xf;
+ data |= (dsc->rc_quant_incr_limit0 & 0x1f) << 8;
+ data |= (dsc->rc_quant_incr_limit1 & 0x1f) << 13;
+ data |= (dsc->rc_tgt_offset_high & 0xf) << 20;
+ data |= (dsc->rc_tgt_offset_low & 0xf) << 24;
+
+ DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_CONFIG, data);
+
+ /* program the dsc wrapper */
+ data = BIT(0); /* encoder enable */
+ if (dsc->native_422)
+ data |= BIT(8);
+ else if (dsc->native_420)
+ data |= BIT(9);
+ if (!dsc->convert_rgb)
+ data |= BIT(10);
+ if (dsc->bits_per_component == 8)
+ data |= BIT(11);
+ if (mode & DSC_MODE_SPLIT_PANEL)
+ data |= BIT(12);
+ if (mode & DSC_MODE_MULTIPLEX)
+ data |= BIT(13);
+ if (!(mode & DSC_MODE_VIDEO))
+ data |= BIT(17);
+
+ DPU_REG_WRITE(hw, sblk->ctl.base + DSC_CFG, data);
+}
+
+static inline void dpu_hw_dsc_config_thresh_1_2(struct dpu_hw_dsc
*hw_dsc,
+ struct drm_dsc_config *dsc)
+{
+ struct dpu_hw_blk_reg_map *hw;
+ const struct dpu_dsc_sub_blks *sblk;
+ struct drm_dsc_rc_range_parameters *rc;
+
+ if (!hw_dsc || !dsc)
+ return;
+
+ hw = &hw_dsc->hw;
+
+ sblk = hw_dsc->caps->sblk;
+
+ rc = dsc->rc_range_params;
+
+ /*
+ * With BUF_THRESH -- 14 in total
+ * each register contains 4 thresh values with the last register
+ * containing only 2 thresh values
+ */
+ DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_BUF_THRESH_0,
+ (dsc->rc_buf_thresh[0] << 0) |
+ (dsc->rc_buf_thresh[1] << 8) |
+ (dsc->rc_buf_thresh[2] << 16) |
+ (dsc->rc_buf_thresh[3] << 24));
+ DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_BUF_THRESH_1,
+ (dsc->rc_buf_thresh[4] << 0) |
+ (dsc->rc_buf_thresh[5] << 8) |
+ (dsc->rc_buf_thresh[6] << 16) |
+ (dsc->rc_buf_thresh[7] << 24));
+ DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_BUF_THRESH_2,
+ (dsc->rc_buf_thresh[8] << 0) |
+ (dsc->rc_buf_thresh[9] << 8) |
+ (dsc->rc_buf_thresh[10] << 16) |
+ (dsc->rc_buf_thresh[11] << 24));
+ DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_BUF_THRESH_3,
+ (dsc->rc_buf_thresh[12] << 0) |
+ (dsc->rc_buf_thresh[13] << 8));
+
+ /*
+ * with min/max_QP -- 5 bits
+ * each register contains 5 min_qp or max_qp for total of 15
+ *
+ * With BPG_OFFSET -- 6 bits
+ * each register contains 5 BPG_offset for total of 15
+ */
+ DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_MIN_QP_0,
+ (rc[0].range_min_qp << 0) |
+ (rc[1].range_min_qp << 5) |
+ (rc[2].range_min_qp << 10) |
+ (rc[3].range_min_qp << 15) |
+ (rc[4].range_min_qp << 20));
+ DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_MAX_QP_0,
+ (rc[0].range_max_qp << 0) |
+ (rc[1].range_max_qp << 5) |
+ (rc[2].range_max_qp << 10) |
+ (rc[3].range_max_qp << 15) |
+ (rc[4].range_max_qp << 20));
+ DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_RANGE_BPG_OFFSETS_0,
+ (rc[0].range_bpg_offset << 0) |
+ (rc[1].range_bpg_offset << 6) |
+ (rc[2].range_bpg_offset << 12) |
+ (rc[3].range_bpg_offset << 18) |
+ (rc[4].range_bpg_offset << 24));
+
+ DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_MIN_QP_1,
+ (rc[5].range_min_qp << 0) |
+ (rc[6].range_min_qp << 5) |
+ (rc[7].range_min_qp << 10) |
+ (rc[8].range_min_qp << 15) |
+ (rc[9].range_min_qp << 20));
+ DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_MAX_QP_1,
+ (rc[5].range_max_qp << 0) |
+ (rc[6].range_max_qp << 5) |
+ (rc[7].range_max_qp << 10) |
+ (rc[8].range_max_qp << 15) |
+ (rc[9].range_max_qp << 20));
+ DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_RANGE_BPG_OFFSETS_1,
+ (rc[5].range_bpg_offset << 0) |
+ (rc[6].range_bpg_offset << 6) |
+ (rc[7].range_bpg_offset << 12) |
+ (rc[8].range_bpg_offset << 18) |
+ (rc[9].range_bpg_offset << 24));
+
+ DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_MIN_QP_2,
+ (rc[10].range_min_qp << 0) |
+ (rc[11].range_min_qp << 5) |
+ (rc[12].range_min_qp << 10) |
+ (rc[13].range_min_qp << 15) |
+ (rc[14].range_min_qp << 20));
+ DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_MAX_QP_2,
+ (rc[10].range_max_qp << 0) |
+ (rc[11].range_max_qp << 5) |
+ (rc[12].range_max_qp << 10) |
+ (rc[13].range_max_qp << 15) |
+ (rc[14].range_max_qp << 20));
+ DPU_REG_WRITE(hw, sblk->enc.base + DSC_RC_RANGE_BPG_OFFSETS_2,
+ (rc[10].range_bpg_offset << 0) |
+ (rc[11].range_bpg_offset << 6) |
+ (rc[12].range_bpg_offset << 12) |
+ (rc[13].range_bpg_offset << 18) |
+ (rc[14].range_bpg_offset << 24));
+}
+
+static inline void dpu_hw_dsc_bind_pingpong_blk_1_2(struct
dpu_hw_dsc *hw_dsc,
+ const enum dpu_pingpong pp)
+{
+ struct dpu_hw_blk_reg_map *hw;
+ const struct dpu_dsc_sub_blks *sblk;
+ int mux_cfg = 0xf; /* Disabled */
+
+ hw = &hw_dsc->hw;
+
+ sblk = hw_dsc->caps->sblk;
+
+ if (pp)
+ mux_cfg = (pp - PINGPONG_0) & 0x7;
