These patches do a little cleanup on the v9 patch[1] from Kuogee.
Changes from v1: * Reduce code even more in second patch * Pick up tags on first patch
Stephen Boyd (3): drm/msm/dp: Reorganize code to avoid forward declaration drm/msm/dp: Remove pixel_rate from struct dp_ctrl drm/msm/dp: Get rid of dp_ctrl_on_stream_phy_test_report()
drivers/gpu/drm/msm/dp/dp_ctrl.c | 148 ++++++++++++------------------- drivers/gpu/drm/msm/dp/dp_ctrl.h | 1 - 2 files changed, 59 insertions(+), 90 deletions(-)
[1] https://lore.kernel.org/r/1655411200-7255-1-git-send-email-quic_khsieh@quici...
base-commit: f2906aa863381afb0015a9eb7fefad885d4e5a56 prerequisite-patch-id: 2fc33a2830ec84d922023fddb585728c48a59525
Let's move these functions around to avoid having to forward declare dp_ctrl_on_stream_phy_test_report(). Also remove dp_ctrl_reinitialize_mainlink() forward declaration because we're doing that sort of task.
Reviewed-by: Kuogee Hsieh quic_khsieh@quicinc.com Reviewed-by: Dmitry Baryshkov dmitry.baryshkov@linaro.org Signed-off-by: Stephen Boyd swboyd@chromium.org --- drivers/gpu/drm/msm/dp/dp_ctrl.c | 104 +++++++++++++++---------------- 1 file changed, 50 insertions(+), 54 deletions(-)
diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c index 703249384e7c..bd445e683cfc 100644 --- a/drivers/gpu/drm/msm/dp/dp_ctrl.c +++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c @@ -1238,8 +1238,6 @@ static int dp_ctrl_link_train_2(struct dp_ctrl_private *ctrl, return -ETIMEDOUT; }
-static int dp_ctrl_reinitialize_mainlink(struct dp_ctrl_private *ctrl); - static int dp_ctrl_link_train(struct dp_ctrl_private *ctrl, int *training_step) { @@ -1534,38 +1532,6 @@ static int dp_ctrl_link_maintenance(struct dp_ctrl_private *ctrl) return ret; }
-static int dp_ctrl_on_stream_phy_test_report(struct dp_ctrl *dp_ctrl); - -static int dp_ctrl_process_phy_test_request(struct dp_ctrl_private *ctrl) -{ - int ret = 0; - - if (!ctrl->link->phy_params.phy_test_pattern_sel) { - drm_dbg_dp(ctrl->drm_dev, - "no test pattern selected by sink\n"); - return ret; - } - - /* - * The global reset will need DP link related clocks to be - * running. Add the global reset just before disabling the - * link clocks and core clocks. - */ - ret = dp_ctrl_off(&ctrl->dp_ctrl); - if (ret) { - DRM_ERROR("failed to disable DP controller\n"); - return ret; - } - - ret = dp_ctrl_on_link(&ctrl->dp_ctrl); - if (!ret) - ret = dp_ctrl_on_stream_phy_test_report(&ctrl->dp_ctrl); - else - DRM_ERROR("failed to enable DP link controller\n"); - - return ret; -} - static bool dp_ctrl_send_phy_test_pattern(struct dp_ctrl_private *ctrl) { bool success = false; @@ -1618,6 +1584,56 @@ static bool dp_ctrl_send_phy_test_pattern(struct dp_ctrl_private *ctrl) return success; }
+static int dp_ctrl_on_stream_phy_test_report(struct dp_ctrl *dp_ctrl) +{ + int ret; + struct dp_ctrl_private *ctrl; + + ctrl = container_of(dp_ctrl, struct dp_ctrl_private, dp_ctrl); + + ctrl->dp_ctrl.pixel_rate = ctrl->panel->dp_mode.drm_mode.clock; + + ret = dp_ctrl_enable_stream_clocks(ctrl); + if (ret) { + DRM_ERROR("Failed to start pixel clocks. ret=%d\n", ret); + return ret; + } + + dp_ctrl_send_phy_test_pattern(ctrl); + + return 0; +} + +static int dp_ctrl_process_phy_test_request(struct dp_ctrl_private *ctrl) +{ + int ret = 0; + + if (!ctrl->link->phy_params.phy_test_pattern_sel) { + drm_dbg_dp(ctrl->drm_dev, + "no test pattern selected by sink\n"); + return ret; + } + + /* + * The global reset will need DP link related clocks to be + * running. Add the global reset just before disabling the + * link clocks and core clocks. + */ + ret = dp_ctrl_off(&ctrl->dp_ctrl); + if (ret) { + DRM_ERROR("failed to disable DP controller\n"); + return ret; + } + + ret = dp_ctrl_on_link(&ctrl->dp_ctrl); + if (!ret) + ret = dp_ctrl_on_stream_phy_test_report(&ctrl->dp_ctrl); + else + DRM_ERROR("failed to enable DP link controller\n"); + + return ret; +} + void dp_ctrl_handle_sink_request(struct dp_ctrl *dp_ctrl) { struct dp_ctrl_private *ctrl; @@ -1815,26 +1831,6 @@ static int dp_ctrl_link_retrain(struct dp_ctrl_private *ctrl) return dp_ctrl_setup_main_link(ctrl, &training_step); }
-static int dp_ctrl_on_stream_phy_test_report(struct dp_ctrl *dp_ctrl) -{ - int ret; - struct dp_ctrl_private *ctrl; - - ctrl = container_of(dp_ctrl, struct dp_ctrl_private, dp_ctrl); - - ctrl->dp_ctrl.pixel_rate = ctrl->panel->dp_mode.drm_mode.clock; - - ret = dp_ctrl_enable_stream_clocks(ctrl); - if (ret) { - DRM_ERROR("Failed to start pixel clocks. ret=%d\n", ret); - return ret; - } - - dp_ctrl_send_phy_test_pattern(ctrl); - - return 0; -} - int dp_ctrl_on_stream(struct dp_ctrl *dp_ctrl, bool force_link_train) { int ret = 0;
This struct member is stored to in the function that calls the function which uses it. That's possible with a function argument instead of storing to a struct member. Pass the pixel_rate as an argument instead to simplify the code. Note that dp_ctrl_link_maintenance() was storing the pixel_rate but never using it so we just remove the assignment from there.
Cc: Kuogee Hsieh quic_khsieh@quicinc.com Signed-off-by: Stephen Boyd swboyd@chromium.org ---
dp_ctrl_on_link() almost doesn't even use the pixel_clk either. It just prints the value. I kept it around because maybe it is useful? But if not, then we can remove even more code.
drivers/gpu/drm/msm/dp/dp_ctrl.c | 60 ++++++++++++-------------------- drivers/gpu/drm/msm/dp/dp_ctrl.h | 1 - 2 files changed, 22 insertions(+), 39 deletions(-)
diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c index bd445e683cfc..feb26d4d6e97 100644 --- a/drivers/gpu/drm/msm/dp/dp_ctrl.c +++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c @@ -1357,25 +1357,7 @@ static int dp_ctrl_enable_mainlink_clocks(struct dp_ctrl_private *ctrl) if (ret) DRM_ERROR("Unable to start link clocks. ret=%d\n", ret);
- drm_dbg_dp(ctrl->drm_dev, "link rate=%d pixel_clk=%d\n", - ctrl->link->link_params.rate, ctrl->dp_ctrl.pixel_rate); - - return ret; -} - -static int dp_ctrl_enable_stream_clocks(struct dp_ctrl_private *ctrl) -{ - int ret = 0; - - dp_ctrl_set_clock_rate(ctrl, DP_STREAM_PM, "stream_pixel", - ctrl->dp_ctrl.pixel_rate * 1000); - - ret = dp_power_clk_enable(ctrl->power, DP_STREAM_PM, true); - if (ret) - DRM_ERROR("Unabled to start pixel clocks. ret=%d\n", ret); - - drm_dbg_dp(ctrl->drm_dev, "link rate=%d pixel_clk=%d\n", - ctrl->link->link_params.rate, ctrl->dp_ctrl.pixel_rate); + drm_dbg_dp(ctrl->drm_dev, "link rate=%d\n", ctrl->link->link_params.rate);
return ret; } @@ -1517,8 +1499,6 @@ static int dp_ctrl_link_maintenance(struct dp_ctrl_private *ctrl) ctrl->link->phy_params.p_level = 0; ctrl->link->phy_params.v_level = 0;
- ctrl->dp_ctrl.pixel_rate = ctrl->panel->dp_mode.drm_mode.clock; - ret = dp_ctrl_setup_main_link(ctrl, &training_step); if (ret) goto end; @@ -1588,14 +1568,16 @@ static int dp_ctrl_on_stream_phy_test_report(struct dp_ctrl *dp_ctrl) { int ret; struct dp_ctrl_private *ctrl; + unsigned long pixel_rate;
ctrl = container_of(dp_ctrl, struct dp_ctrl_private, dp_ctrl);
- ctrl->dp_ctrl.pixel_rate = ctrl->panel->dp_mode.drm_mode.clock; + pixel_rate = ctrl->panel->dp_mode.drm_mode.clock; + dp_ctrl_set_clock_rate(ctrl, DP_STREAM_PM, "stream_pixel", pixel_rate * 1000);
- ret = dp_ctrl_enable_stream_clocks(ctrl); + ret = dp_power_clk_enable(ctrl->power, DP_STREAM_PM, true); if (ret) { - DRM_ERROR("Failed to start pixel clocks. ret=%d\n", ret); + DRM_ERROR("Unable to start pixel clocks. ret=%d\n", ret); return ret; }
@@ -1704,11 +1686,12 @@ int dp_ctrl_on_link(struct dp_ctrl *dp_ctrl) { int rc = 0; struct dp_ctrl_private *ctrl; - u32 rate = 0; + u32 rate; int link_train_max_retries = 5; u32 const phy_cts_pixel_clk_khz = 148500; u8 link_status[DP_LINK_STATUS_SIZE]; unsigned int training_step; + unsigned long pixel_rate;
if (!dp_ctrl) return -EINVAL; @@ -1716,25 +1699,24 @@ int dp_ctrl_on_link(struct dp_ctrl *dp_ctrl) ctrl = container_of(dp_ctrl, struct dp_ctrl_private, dp_ctrl);
rate = ctrl->panel->link_info.rate; + pixel_rate = ctrl->panel->dp_mode.drm_mode.clock;
dp_power_clk_enable(ctrl->power, DP_CORE_PM, true);
if (ctrl->link->sink_request & DP_TEST_LINK_PHY_TEST_PATTERN) { drm_dbg_dp(ctrl->drm_dev, "using phy test link parameters\n"); - if (!ctrl->panel->dp_mode.drm_mode.clock) - ctrl->dp_ctrl.pixel_rate = phy_cts_pixel_clk_khz; + if (!pixel_rate) + pixel_rate = phy_cts_pixel_clk_khz; } else { ctrl->link->link_params.rate = rate; ctrl->link->link_params.num_lanes = ctrl->panel->link_info.num_lanes; - ctrl->dp_ctrl.pixel_rate = ctrl->panel->dp_mode.drm_mode.clock; }
- drm_dbg_dp(ctrl->drm_dev, "rate=%d, num_lanes=%d, pixel_rate=%d\n", + drm_dbg_dp(ctrl->drm_dev, "rate=%d, num_lanes=%d, pixel_rate=%lu\n", ctrl->link->link_params.rate, ctrl->link->link_params.num_lanes, - ctrl->dp_ctrl.pixel_rate); - + pixel_rate);
rc = dp_ctrl_enable_mainlink_clocks(ctrl); if (rc) @@ -1836,6 +1818,7 @@ int dp_ctrl_on_stream(struct dp_ctrl *dp_ctrl, bool force_link_train) int ret = 0; bool mainlink_ready = false; struct dp_ctrl_private *ctrl; + unsigned long pixel_rate; unsigned long pixel_rate_orig;
if (!dp_ctrl) @@ -1843,15 +1826,14 @@ int dp_ctrl_on_stream(struct dp_ctrl *dp_ctrl, bool force_link_train)
ctrl = container_of(dp_ctrl, struct dp_ctrl_private, dp_ctrl);
- ctrl->dp_ctrl.pixel_rate = ctrl->panel->dp_mode.drm_mode.clock; + pixel_rate = pixel_rate_orig = ctrl->panel->dp_mode.drm_mode.clock;
- pixel_rate_orig = ctrl->dp_ctrl.pixel_rate; if (dp_ctrl->wide_bus_en) - ctrl->dp_ctrl.pixel_rate >>= 1; + pixel_rate >>= 1;
- drm_dbg_dp(ctrl->drm_dev, "rate=%d, num_lanes=%d, pixel_rate=%d\n", + drm_dbg_dp(ctrl->drm_dev, "rate=%d, num_lanes=%d, pixel_rate=%lu\n", ctrl->link->link_params.rate, - ctrl->link->link_params.num_lanes, ctrl->dp_ctrl.pixel_rate); + ctrl->link->link_params.num_lanes, pixel_rate);
if (!dp_power_clk_status(ctrl->power, DP_CTRL_PM)) { /* link clk is off */ ret = dp_ctrl_enable_mainlink_clocks(ctrl); @@ -1861,9 +1843,11 @@ int dp_ctrl_on_stream(struct dp_ctrl *dp_ctrl, bool force_link_train) } }
- ret = dp_ctrl_enable_stream_clocks(ctrl); + dp_ctrl_set_clock_rate(ctrl, DP_STREAM_PM, "stream_pixel", pixel_rate * 1000); + + ret = dp_power_clk_enable(ctrl->power, DP_STREAM_PM, true); if (ret) { - DRM_ERROR("Failed to start pixel clocks. ret=%d\n", ret); + DRM_ERROR("Unable to start pixel clocks. ret=%d\n", ret); goto end; }
diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.h b/drivers/gpu/drm/msm/dp/dp_ctrl.h index b563e2e3bfe5..9f29734af81c 100644 --- a/drivers/gpu/drm/msm/dp/dp_ctrl.h +++ b/drivers/gpu/drm/msm/dp/dp_ctrl.h @@ -16,7 +16,6 @@ struct dp_ctrl { bool orientation; atomic_t aborted; - u32 pixel_rate; bool wide_bus_en; };
This API isn't really more than a couple lines now that we don't store the pixel_rate to the struct member. Inline it into the caller.
Cc: Kuogee Hsieh quic_khsieh@quicinc.com Signed-off-by: Stephen Boyd swboyd@chromium.org --- drivers/gpu/drm/msm/dp/dp_ctrl.c | 44 ++++++++++++-------------------- 1 file changed, 17 insertions(+), 27 deletions(-)
diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c index feb26d4d6e97..e475f4ca078a 100644 --- a/drivers/gpu/drm/msm/dp/dp_ctrl.c +++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c @@ -1564,36 +1564,15 @@ static bool dp_ctrl_send_phy_test_pattern(struct dp_ctrl_private *ctrl) return success; }
-static int dp_ctrl_on_stream_phy_test_report(struct dp_ctrl *dp_ctrl) +static int dp_ctrl_process_phy_test_request(struct dp_ctrl_private *ctrl) { int ret; - struct dp_ctrl_private *ctrl; unsigned long pixel_rate;
- ctrl = container_of(dp_ctrl, struct dp_ctrl_private, dp_ctrl); - - pixel_rate = ctrl->panel->dp_mode.drm_mode.clock; - dp_ctrl_set_clock_rate(ctrl, DP_STREAM_PM, "stream_pixel", pixel_rate * 1000); - - ret = dp_power_clk_enable(ctrl->power, DP_STREAM_PM, true); - if (ret) { - DRM_ERROR("Unable to start pixel clocks. ret=%d\n", ret); - return ret; - } - - dp_ctrl_send_phy_test_pattern(ctrl); - - return 0; -} - -static int dp_ctrl_process_phy_test_request(struct dp_ctrl_private *ctrl) -{ - int ret = 0; - if (!ctrl->link->phy_params.phy_test_pattern_sel) { drm_dbg_dp(ctrl->drm_dev, "no test pattern selected by sink\n"); - return ret; + return 0; }
/* @@ -1608,12 +1587,23 @@ static int dp_ctrl_process_phy_test_request(struct dp_ctrl_private *ctrl) }
ret = dp_ctrl_on_link(&ctrl->dp_ctrl); - if (!ret) - ret = dp_ctrl_on_stream_phy_test_report(&ctrl->dp_ctrl); - else + if (ret) { DRM_ERROR("failed to enable DP link controller\n"); + return ret; + }
- return ret; + pixel_rate = ctrl->panel->dp_mode.drm_mode.clock; + dp_ctrl_set_clock_rate(ctrl, DP_STREAM_PM, "stream_pixel", pixel_rate * 1000); + + ret = dp_power_clk_enable(ctrl->power, DP_STREAM_PM, true); + if (ret) { + DRM_ERROR("Failed to start pixel clocks. ret=%d\n", ret); + return ret; + } + + dp_ctrl_send_phy_test_pattern(ctrl); + + return 0; }
void dp_ctrl_handle_sink_request(struct dp_ctrl *dp_ctrl)
dri-devel@lists.freedesktop.org
-
Stephen Boyd