[PATCH v7 02/14] drm/msm/dsi: Pass DSC params to drm_panel

Vinod Koul
2022-04-06T14:04:34Z

When DSC is enabled, we need to get the DSC parameters from the panel
driver, so add a dsc parameter in panel to fetch and pass DSC
configuration for DSI panels to DPU encoder, which will enable and
then configure DSC hardware blocks accordingly.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h | 2 ++
drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 2 ++
drivers/gpu/drm/msm/dsi/dsi.c | 5 +++++
drivers/gpu/drm/msm/dsi/dsi.h | 1 +
drivers/gpu/drm/msm/dsi/dsi_host.c | 22 +++++++++++++++++++++
drivers/gpu/drm/msm/msm_drv.h | 6 ++++++
include/drm/drm_panel.h | 7 +++++++
7 files changed, 45 insertions(+)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
index 42db6ce12caf..ef873e5285a0 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.h
@@ -27,6 +27,7 @@
* based on num_of_h_tiles
* @is_te_using_watchdog_timer: Boolean to indicate watchdog TE is
* used instead of panel TE in cmd mode panels
+ * @dsc: DSC configuration data for DSC-enabled displays
*/
struct msm_display_info {
int intf_type;
@@ -34,6 +35,7 @@ struct msm_display_info {
uint32_t num_of_h_tiles;
uint32_t h_tile_instance[MAX_H_TILES_PER_DISPLAY];
bool is_te_using_watchdog_timer;
+ struct msm_display_dsc_config *dsc;
};

/**
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
index e29796c4f27b..e64154407425 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c
@@ -582,6 +582,8 @@ static int _dpu_kms_initialize_dsi(struct drm_device *dev,
MSM_DISPLAY_CAP_CMD_MODE :
MSM_DISPLAY_CAP_VID_MODE;

+ info.dsc = msm_dsi_get_dsc_config(priv->dsi[i]);
+
if (msm_dsi_is_bonded_dsi(priv->dsi[i]) && priv->dsi[other]) {
rc = msm_dsi_modeset_init(priv->dsi[other], dev, encoder);
if (rc) {
diff --git a/drivers/gpu/drm/msm/dsi/dsi.c b/drivers/gpu/drm/msm/dsi/dsi.c
index c12e66aa42a3..06a76834be52 100644
--- a/drivers/gpu/drm/msm/dsi/dsi.c
+++ b/drivers/gpu/drm/msm/dsi/dsi.c
@@ -21,6 +21,11 @@ bool msm_dsi_is_cmd_mode(struct msm_dsi *msm_dsi)
return !(host_flags & MIPI_DSI_MODE_VIDEO);
}

+struct msm_display_dsc_config *msm_dsi_get_dsc_config(struct msm_dsi *msm_dsi)
+{
+ return msm_dsi_host_get_dsc_config(msm_dsi->host);
+}
+
static int dsi_get_phy(struct msm_dsi *msm_dsi)
{
struct platform_device *pdev = msm_dsi->pdev;
diff --git a/drivers/gpu/drm/msm/dsi/dsi.h b/drivers/gpu/drm/msm/dsi/dsi.h
index c8dedc95428c..16cd9b2fce86 100644
--- a/drivers/gpu/drm/msm/dsi/dsi.h
+++ b/drivers/gpu/drm/msm/dsi/dsi.h
@@ -152,6 +152,7 @@ int dsi_calc_clk_rate_v2(struct msm_dsi_host *msm_host, bool is_bonded_dsi);
int dsi_calc_clk_rate_6g(struct msm_dsi_host *msm_host, bool is_bonded_dsi);
void msm_dsi_host_snapshot(struct msm_disp_state *disp_state, struct mipi_dsi_host *host);
void msm_dsi_host_test_pattern_en(struct mipi_dsi_host *host);
+struct msm_display_dsc_config *msm_dsi_host_get_dsc_config(struct mipi_dsi_host *host);

/* dsi phy */
struct msm_dsi_phy;
diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index 4a8a9b31ce1d..cb2e179127ea 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -2061,9 +2061,24 @@ int msm_dsi_host_modeset_init(struct mipi_dsi_host *host,
{
struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd;
+ struct drm_panel *panel;
int ret;

msm_host->dev = dev;
+ panel = msm_dsi_host_get_panel(&msm_host->base);
+
+ if (panel && panel->dsc) {
+ struct msm_display_dsc_config *dsc = msm_host->dsc;
+
+ if (!dsc) {
+ dsc = devm_kzalloc(&msm_host->pdev->dev, sizeof(*dsc), GFP_KERNEL);
+ if (!dsc)
+ return -ENOMEM;
+ dsc->drm = panel->dsc;
+ msm_host->dsc = dsc;
+ }
+ }
+
ret = cfg_hnd->ops->tx_buf_alloc(msm_host, SZ_4K);
if (ret) {
pr_err("%s: alloc tx gem obj failed, %d\n", __func__, ret);
@@ -2628,3 +2643,10 @@ void msm_dsi_host_test_pattern_en(struct mipi_dsi_host *host)
dsi_write(msm_host, REG_DSI_TEST_PATTERN_GEN_CMD_STREAM0_TRIGGER,
DSI_TEST_PATTERN_GEN_CMD_STREAM0_TRIGGER_SW_TRIGGER);
}
+
+struct msm_display_dsc_config *msm_dsi_host_get_dsc_config(struct mipi_dsi_host *host)
+{
+ struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
+
+ return msm_host->dsc;
+}
diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
index 57aee75f5022..2a3280df7b12 100644
--- a/drivers/gpu/drm/msm/msm_drv.h
+++ b/drivers/gpu/drm/msm/msm_drv.h
@@ -336,6 +336,7 @@ void msm_dsi_snapshot(struct msm_disp_state *disp_state, struct msm_dsi *msm_dsi
bool msm_dsi_is_cmd_mode(struct msm_dsi *msm_dsi);
bool msm_dsi_is_bonded_dsi(struct msm_dsi *msm_dsi);
bool msm_dsi_is_master_dsi(struct msm_dsi *msm_dsi);
+struct msm_display_dsc_config *msm_dsi_get_dsc_config(struct msm_dsi *msm_dsi);
#else
static inline void __init msm_dsi_register(void)
{
@@ -364,6 +365,11 @@ static inline bool msm_dsi_is_master_dsi(struct msm_dsi *msm_dsi)
{
return false;
}
+
+static inline struct msm_display_dsc_config *msm_dsi_get_dsc_config(struct msm_dsi *msm_dsi)
+{
+ return NULL;
+}
#endif

#ifdef CONFIG_DRM_MSM_DP
diff --git a/include/drm/drm_panel.h b/include/drm/drm_panel.h
index 4602f833eb51..eb8ae9bf32ed 100644
--- a/include/drm/drm_panel.h
+++ b/include/drm/drm_panel.h
@@ -171,6 +171,13 @@ struct drm_panel {
* Panel entry in registry.
*/
struct list_head list;
+
+ /**
+ * @dsc:
+ *
+ * Panel DSC pps payload to be sent
+ */
+ struct drm_dsc_config *dsc;
};

void drm_panel_init(struct drm_panel *panel, struct device *dev,
--
2.34.1