Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 213 insertions, 0 deletions

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c
new file mode 100644
index 0000000000..509dbaa51d
--- /dev/null
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c
@@ -0,0 +1,213 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2020-2022, Linaro Limited
+ */
+
+#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_COMMON_MODE                 0x000
+#define DSC_ENC                         0x004
+#define DSC_PICTURE                     0x008
+#define DSC_SLICE                       0x00C
+#define DSC_CHUNK_SIZE                  0x010
+#define DSC_DELAY                       0x014
+#define DSC_SCALE_INITIAL               0x018
+#define DSC_SCALE_DEC_INTERVAL          0x01C
+#define DSC_SCALE_INC_INTERVAL          0x020
+#define DSC_FIRST_LINE_BPG_OFFSET       0x024
+#define DSC_BPG_OFFSET                  0x028
+#define DSC_DSC_OFFSET                  0x02C
+#define DSC_FLATNESS                    0x030
+#define DSC_RC_MODEL_SIZE               0x034
+#define DSC_RC                          0x038
+#define DSC_RC_BUF_THRESH               0x03C
+#define DSC_RANGE_MIN_QP                0x074
+#define DSC_RANGE_MAX_QP                0x0B0
+#define DSC_RANGE_BPG_OFFSET            0x0EC
+
+#define DSC_CTL(m) (0x1800 - 0x3FC * (m - DSC_0))
+
+static void dpu_hw_dsc_disable(struct dpu_hw_dsc *dsc)
+{
+	struct dpu_hw_blk_reg_map *c = &dsc->hw;
+
+	DPU_REG_WRITE(c, DSC_COMMON_MODE, 0);
+}
+
+static void dpu_hw_dsc_config(struct dpu_hw_dsc *hw_dsc,
+			      struct drm_dsc_config *dsc,
+			      u32 mode,
+			      u32 initial_lines)
+{
+	struct dpu_hw_blk_reg_map *c = &hw_dsc->hw;
+	u32 data;
+	u32 slice_last_group_size;
+	u32 det_thresh_flatness;
+	bool is_cmd_mode = !(mode & DSC_MODE_VIDEO);
+
+	DPU_REG_WRITE(c, DSC_COMMON_MODE, mode);
+
+	if (is_cmd_mode)
+		initial_lines += 1;
+
+	slice_last_group_size = (dsc->slice_width + 2) % 3;
+
+	data = (initial_lines << 20);
+	data |= (slice_last_group_size << 18);
+	/* bpp is 6.4 format, 4 LSBs bits are for fractional part */
+	data |= (dsc->bits_per_pixel << 8);
+	data |= (dsc->block_pred_enable << 7);
+	data |= (dsc->line_buf_depth << 3);
+	data |= (dsc->simple_422 << 2);
+	data |= (dsc->convert_rgb << 1);
+	data |= dsc->bits_per_component;
+
+	DPU_REG_WRITE(c, DSC_ENC, data);
+
+	data = dsc->pic_width << 16;
+	data |= dsc->pic_height;
+	DPU_REG_WRITE(c, DSC_PICTURE, data);
+
+	data = dsc->slice_width << 16;
+	data |= dsc->slice_height;
+	DPU_REG_WRITE(c, DSC_SLICE, data);
+
+	data = dsc->slice_chunk_size << 16;
+	DPU_REG_WRITE(c, DSC_CHUNK_SIZE, data);
+
+	data = dsc->initial_dec_delay << 16;
+	data |= dsc->initial_xmit_delay;
+	DPU_REG_WRITE(c, DSC_DELAY, data);
+
+	data = dsc->initial_scale_value;
+	DPU_REG_WRITE(c, DSC_SCALE_INITIAL, data);
+
+	data = dsc->scale_decrement_interval;
+	DPU_REG_WRITE(c, DSC_SCALE_DEC_INTERVAL, data);
+
+	data = dsc->scale_increment_interval;
+	DPU_REG_WRITE(c, DSC_SCALE_INC_INTERVAL, data);
+
+	data = dsc->first_line_bpg_offset;
+	DPU_REG_WRITE(c, DSC_FIRST_LINE_BPG_OFFSET, data);
+
+	data = dsc->nfl_bpg_offset << 16;
+	data |= dsc->slice_bpg_offset;
+	DPU_REG_WRITE(c, DSC_BPG_OFFSET, data);
+
+	data = dsc->initial_offset << 16;
+	data |= dsc->final_offset;
+	DPU_REG_WRITE(c, DSC_DSC_OFFSET, data);
+
+	det_thresh_flatness = drm_dsc_flatness_det_thresh(dsc);
+	data = det_thresh_flatness << 10;
+	data |= dsc->flatness_max_qp << 5;
+	data |= dsc->flatness_min_qp;
+	DPU_REG_WRITE(c, DSC_FLATNESS, data);
+
+	data = dsc->rc_model_size;
+	DPU_REG_WRITE(c, DSC_RC_MODEL_SIZE, data);
+
+	data = dsc->rc_tgt_offset_low << 18;
+	data |= dsc->rc_tgt_offset_high << 14;
+	data |= dsc->rc_quant_incr_limit1 << 9;
+	data |= dsc->rc_quant_incr_limit0 << 4;
+	data |= dsc->rc_edge_factor;
+	DPU_REG_WRITE(c, DSC_RC, data);
+}
+
+static void dpu_hw_dsc_config_thresh(struct dpu_hw_dsc *hw_dsc,
+				     struct drm_dsc_config *dsc)
+{
+	struct drm_dsc_rc_range_parameters *rc = dsc->rc_range_params;
+	struct dpu_hw_blk_reg_map *c = &hw_dsc->hw;
+	u32 off;
+	int i;
+
+	off = DSC_RC_BUF_THRESH;
+	for (i = 0; i < DSC_NUM_BUF_RANGES - 1 ; i++) {
+		DPU_REG_WRITE(c, off, dsc->rc_buf_thresh[i]);
+		off += 4;
+	}
+
+	off = DSC_RANGE_MIN_QP;
+	for (i = 0; i < DSC_NUM_BUF_RANGES; i++) {
+		DPU_REG_WRITE(c, off, rc[i].range_min_qp);
+		off += 4;
+	}
+
+	off = DSC_RANGE_MAX_QP;
+	for (i = 0; i < 15; i++) {
+		DPU_REG_WRITE(c, off, rc[i].range_max_qp);
+		off += 4;
+	}
+
+	off = DSC_RANGE_BPG_OFFSET;
+	for (i = 0; i < 15; i++) {
+		DPU_REG_WRITE(c, off, rc[i].range_bpg_offset);
+		off += 4;
+	}
+}
+
+static void dpu_hw_dsc_bind_pingpong_blk(
+		struct dpu_hw_dsc *hw_dsc,
+		const enum dpu_pingpong pp)
+{
+	struct dpu_hw_blk_reg_map *c = &hw_dsc->hw;
+	int mux_cfg = 0xF;
+	u32 dsc_ctl_offset;
+
+	dsc_ctl_offset = DSC_CTL(hw_dsc->idx);
+
+	if (pp)
+		mux_cfg = (pp - PINGPONG_0) & 0x7;
+
+	if (pp)
+		DRM_DEBUG_KMS("Binding dsc:%d to pp:%d\n",
+			      hw_dsc->idx - DSC_0, pp - PINGPONG_0);
+	else
+		DRM_DEBUG_KMS("Unbinding dsc:%d from any pp\n",
+			      hw_dsc->idx - DSC_0);
+
+	DPU_REG_WRITE(c, dsc_ctl_offset, mux_cfg);
+}
+
+static void _setup_dsc_ops(struct dpu_hw_dsc_ops *ops,
+			   unsigned long cap)
+{
+	ops->dsc_disable = dpu_hw_dsc_disable;
+	ops->dsc_config = dpu_hw_dsc_config;
+	ops->dsc_config_thresh = dpu_hw_dsc_config_thresh;
+	if (cap & BIT(DPU_DSC_OUTPUT_CTRL))
+		ops->dsc_bind_pingpong_blk = dpu_hw_dsc_bind_pingpong_blk;
+};
+
+struct dpu_hw_dsc *dpu_hw_dsc_init(const struct dpu_dsc_cfg *cfg,
+				   void __iomem *addr)
+{
+	struct dpu_hw_dsc *c;
+
+	c = kzalloc(sizeof(*c), GFP_KERNEL);
+	if (!c)
+		return ERR_PTR(-ENOMEM);
+
+	c->hw.blk_addr = addr + cfg->base;
+	c->hw.log_mask = DPU_DBG_MASK_DSC;
+
+	c->idx = cfg->id;
+	c->caps = cfg;
+	_setup_dsc_ops(&c->ops, c->caps->features);
+
+	return c;
+}
+
+void dpu_hw_dsc_destroy(struct dpu_hw_dsc *dsc)
+{
+	kfree(dsc);
+}