diff options
author | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2024-01-26 21:26:32 +0300 |
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committer | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2024-02-11 23:38:07 +0300 |
commit | 3ffe15b30a63afb9b53384a4efea9b823f2f5000 (patch) | |
tree | ea509dfcd0ce303e0c208b373b0ac0cd47ce1cb0 /drivers | |
parent | 1577814118e74df91e065bd9a22f9afe3ed39239 (diff) | |
download | linux-3ffe15b30a63afb9b53384a4efea9b823f2f5000.tar.xz |
drm/msm/dp: move link property handling to dp_panel
Instead of passing link properties through the separate struct, parse
them directly in the dp_panel.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Tested-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reviewed-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/576117/
Link: https://lore.kernel.org/r/20240126-dp-power-parser-cleanup-v3-13-098d5f581dd3@linaro.org
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/gpu/drm/msm/dp/dp_display.c | 8 | ||||
-rw-r--r-- | drivers/gpu/drm/msm/dp/dp_display.h | 1 | ||||
-rw-r--r-- | drivers/gpu/drm/msm/dp/dp_panel.c | 66 | ||||
-rw-r--r-- | drivers/gpu/drm/msm/dp/dp_parser.c | 54 | ||||
-rw-r--r-- | drivers/gpu/drm/msm/dp/dp_parser.h | 4 |
5 files changed, 66 insertions, 67 deletions
diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c index 27ccb25fb548..e09ee339be8e 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.c +++ b/drivers/gpu/drm/msm/dp/dp_display.c @@ -357,12 +357,6 @@ static int dp_display_process_hpd_high(struct dp_display_private *dp) int rc = 0; struct edid *edid; - dp->panel->max_dp_lanes = dp->parser->max_dp_lanes; - dp->panel->max_dp_link_rate = dp->parser->max_dp_link_rate; - - drm_dbg_dp(dp->drm_dev, "max_lanes=%d max_link_rate=%d\n", - dp->panel->max_dp_lanes, dp->panel->max_dp_link_rate); - rc = dp_panel_read_sink_caps(dp->panel, dp->dp_display.connector); if (rc) goto end; @@ -382,8 +376,6 @@ static int dp_display_process_hpd_high(struct dp_display_private *dp) dp->audio_supported = drm_detect_monitor_audio(edid); dp_panel_handle_sink_request(dp->panel); - dp->dp_display.max_dp_lanes = dp->parser->max_dp_lanes; - /* * set sink to normal operation mode -- D0 * before dpcd read diff --git a/drivers/gpu/drm/msm/dp/dp_display.h b/drivers/gpu/drm/msm/dp/dp_display.h index 102f3507d824..70759dd1bfd0 100644 --- a/drivers/gpu/drm/msm/dp/dp_display.h +++ b/drivers/gpu/drm/msm/dp/dp_display.h @@ -28,7 +28,6 @@ struct msm_dp { bool wide_bus_en; - u32 max_dp_lanes; struct dp_audio *dp_audio; bool psr_supported; }; diff --git a/drivers/gpu/drm/msm/dp/dp_panel.c b/drivers/gpu/drm/msm/dp/dp_panel.c index 127f6af995cd..8242541a81b9 100644 --- a/drivers/gpu/drm/msm/dp/dp_panel.c +++ b/drivers/gpu/drm/msm/dp/dp_panel.c @@ -7,8 +7,12 @@ #include <drm/drm_connector.h> #include <drm/drm_edid.h> +#include <drm/drm_of.h> #include <drm/drm_print.h> +#define DP_MAX_NUM_DP_LANES 4 +#define DP_LINK_RATE_HBR2 540000 /* kbytes */ + struct dp_panel_private { struct device *dev; struct drm_device *drm_dev; @@ -138,6 +142,9 @@ int dp_panel_read_sink_caps(struct dp_panel *dp_panel, panel = container_of(dp_panel, struct dp_panel_private, dp_panel); + drm_dbg_dp(panel->drm_dev, "max_lanes=%d max_link_rate=%d\n", + dp_panel->max_dp_lanes, dp_panel->max_dp_link_rate); + rc = dp_panel_read_dpcd(dp_panel); if (rc) { DRM_ERROR("read dpcd failed %d\n", rc); @@ -386,10 +393,65 @@ int dp_panel_init_panel_info(struct dp_panel *dp_panel) return 0; } +static u32 dp_panel_link_frequencies(struct device_node *of_node) +{ + struct device_node *endpoint; + u64 frequency = 0; + int cnt; + + endpoint = of_graph_get_endpoint_by_regs(of_node, 1, 0); /* port@1 */ + if (!endpoint) + return 0; + + cnt = of_property_count_u64_elems(endpoint, "link-frequencies"); + + if (cnt > 0) + of_property_read_u64_index(endpoint, "link-frequencies", + cnt - 1, &frequency); + of_node_put(endpoint); + + do_div(frequency, + 10 * /* from symbol rate to link rate */ + 1000); /* kbytes */ + + return frequency; +} + +static int dp_panel_parse_dt(struct dp_panel *dp_panel) +{ + struct dp_panel_private *panel; + struct device_node *of_node; + int cnt; + + panel = container_of(dp_panel, struct dp_panel_private, dp_panel); + of_node = panel->dev->of_node; + + /* + * data-lanes is the property of dp_out endpoint + */ + cnt = drm_of_get_data_lanes_count_ep(of_node, 1, 0, 1, DP_MAX_NUM_DP_LANES); + if (cnt < 0) { + /* legacy code, data-lanes is the property of mdss_dp node */ + cnt = drm_of_get_data_lanes_count(of_node, 1, DP_MAX_NUM_DP_LANES); + } + + if (cnt > 0) + dp_panel->max_dp_lanes = cnt; + else + dp_panel->max_dp_lanes = DP_MAX_NUM_DP_LANES; /* 4 lanes */ + + dp_panel->max_dp_link_rate = dp_panel_link_frequencies(of_node); + if (!dp_panel->max_dp_link_rate) + dp_panel->max_dp_link_rate = DP_LINK_RATE_HBR2; + + return 0; +} + struct dp_panel *dp_panel_get(struct dp_panel_in *in) { struct dp_panel_private *panel; struct dp_panel *dp_panel; + int ret; if (!in->dev || !in->catalog || !in->aux || !in->link) { DRM_ERROR("invalid input\n"); @@ -408,6 +470,10 @@ struct dp_panel *dp_panel_get(struct dp_panel_in *in) dp_panel = &panel->dp_panel; dp_panel->max_bw_code = DP_LINK_BW_8_1; + ret = dp_panel_parse_dt(dp_panel); + if (ret) + return ERR_PTR(ret); + return dp_panel; } diff --git a/drivers/gpu/drm/msm/dp/dp_parser.c b/drivers/gpu/drm/msm/dp/dp_parser.c index 2d0dd4353cdf..aa135d5cedbd 100644 --- a/drivers/gpu/drm/msm/dp/dp_parser.c +++ b/drivers/gpu/drm/msm/dp/dp_parser.c @@ -24,56 +24,6 @@ static int dp_parser_ctrl_res(struct dp_parser *parser) return 0; } -static u32 dp_parser_link_frequencies(struct device_node *of_node) -{ - struct device_node *endpoint; - u64 frequency = 0; - int cnt; - - endpoint = of_graph_get_endpoint_by_regs(of_node, 1, 0); /* port@1 */ - if (!endpoint) - return 0; - - cnt = of_property_count_u64_elems(endpoint, "link-frequencies"); - - if (cnt > 0) - of_property_read_u64_index(endpoint, "link-frequencies", - cnt - 1, &frequency); - of_node_put(endpoint); - - do_div(frequency, - 10 * /* from symbol rate to link rate */ - 1000); /* kbytes */ - - return frequency; -} - -static int dp_parser_misc(struct dp_parser *parser) -{ - struct device_node *of_node = parser->pdev->dev.of_node; - int cnt; - - /* - * data-lanes is the property of dp_out endpoint - */ - cnt = drm_of_get_data_lanes_count_ep(of_node, 1, 0, 1, DP_MAX_NUM_DP_LANES); - if (cnt < 0) { - /* legacy code, data-lanes is the property of mdss_dp node */ - cnt = drm_of_get_data_lanes_count(of_node, 1, DP_MAX_NUM_DP_LANES); - } - - if (cnt > 0) - parser->max_dp_lanes = cnt; - else - parser->max_dp_lanes = DP_MAX_NUM_DP_LANES; /* 4 lanes */ - - parser->max_dp_link_rate = dp_parser_link_frequencies(of_node); - if (!parser->max_dp_link_rate) - parser->max_dp_link_rate = DP_LINK_RATE_HBR2; - - return 0; -} - int devm_dp_parser_find_next_bridge(struct device *dev, struct dp_parser *parser) { struct platform_device *pdev = parser->pdev; @@ -101,10 +51,6 @@ static int dp_parser_parse(struct dp_parser *parser) if (rc) return rc; - rc = dp_parser_misc(parser); - if (rc) - return rc; - return 0; } diff --git a/drivers/gpu/drm/msm/dp/dp_parser.h b/drivers/gpu/drm/msm/dp/dp_parser.h index 7306768547a6..21a66932e35e 100644 --- a/drivers/gpu/drm/msm/dp/dp_parser.h +++ b/drivers/gpu/drm/msm/dp/dp_parser.h @@ -11,8 +11,6 @@ #include "msm_drv.h" #define DP_MAX_PIXEL_CLK_KHZ 675000 -#define DP_MAX_NUM_DP_LANES 4 -#define DP_LINK_RATE_HBR2 540000 /* kbytes */ /** * struct dp_parser - DP parser's data exposed to clients @@ -23,8 +21,6 @@ struct dp_parser { struct platform_device *pdev; struct phy *phy; - u32 max_dp_lanes; - u32 max_dp_link_rate; struct drm_bridge *next_bridge; }; |