Re: [Freedreno] [PATCH v3 25/25] drm/msm/dsi: stop passing src_pll_id to the phy_enable call

On 2021-03-27 04:03, Dmitry Baryshkov wrote:

Phy driver already knows the source PLL id basing on the set usecase and the current PLL id. Stop passing it to the phy_enable call. As a reminder, dsi manager will always use DSI 0 as a clock master in a slave mode, so PLL 0 is always a clocksource for DSI 0 and it is always a clocksource for DSI 1 too unless DSI 1 is used in the standalone mode.

Signed-off-by: Dmitry Baryshkov dmitry.baryshkov@linaro.org

drivers/gpu/drm/msm/dsi/dsi.h | 2 +- drivers/gpu/drm/msm/dsi/dsi_manager.c | 11 +++++------ drivers/gpu/drm/msm/dsi/phy/dsi_phy.c | 4 ++-- drivers/gpu/drm/msm/dsi/phy/dsi_phy.h | 2 +- drivers/gpu/drm/msm/dsi/phy/dsi_phy_10nm.c | 2 +- drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c | 4 ++-- drivers/gpu/drm/msm/dsi/phy/dsi_phy_20nm.c | 4 ++-- drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c | 4 ++-- drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c | 2 +- drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c | 2 +- 10 files changed, 18 insertions(+), 19 deletions(-)

diff --git a/drivers/gpu/drm/msm/dsi/dsi.h b/drivers/gpu/drm/msm/dsi/dsi.h index 53feea9d30c0..c8ef63bdc042 100644 --- a/drivers/gpu/drm/msm/dsi/dsi.h +++ b/drivers/gpu/drm/msm/dsi/dsi.h @@ -162,7 +162,7 @@ struct msm_dsi_phy_clk_request {

void msm_dsi_phy_driver_register(void); void msm_dsi_phy_driver_unregister(void); -int msm_dsi_phy_enable(struct msm_dsi_phy *phy, int src_pll_id, +int msm_dsi_phy_enable(struct msm_dsi_phy *phy, struct msm_dsi_phy_clk_request *clk_req); void msm_dsi_phy_disable(struct msm_dsi_phy *phy); void msm_dsi_phy_get_shared_timings(struct msm_dsi_phy *phy, diff --git a/drivers/gpu/drm/msm/dsi/dsi_manager.c b/drivers/gpu/drm/msm/dsi/dsi_manager.c index 0c47c5fb1ab3..76735cde57c6 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_manager.c +++ b/drivers/gpu/drm/msm/dsi/dsi_manager.c @@ -114,7 +114,7 @@ static int dsi_mgr_setup_components(int id) return ret; }

-static int enable_phy(struct msm_dsi *msm_dsi, int src_pll_id, +static int enable_phy(struct msm_dsi *msm_dsi, struct msm_dsi_phy_shared_timings *shared_timings) { struct msm_dsi_phy_clk_request clk_req; @@ -123,7 +123,7 @@ static int enable_phy(struct msm_dsi *msm_dsi, int src_pll_id,

msm_dsi_host_get_phy_clk_req(msm_dsi->host, &clk_req, is_dual_dsi);

• ret = msm_dsi_phy_enable(msm_dsi->phy, src_pll_id, &clk_req);

• ret = msm_dsi_phy_enable(msm_dsi->phy, &clk_req); msm_dsi_phy_get_shared_timings(msm_dsi->phy, shared_timings);

  return ret;

@@ -136,7 +136,6 @@ dsi_mgr_phy_enable(int id, struct msm_dsi *msm_dsi = dsi_mgr_get_dsi(id); struct msm_dsi *mdsi = dsi_mgr_get_dsi(DSI_CLOCK_MASTER); struct msm_dsi *sdsi = dsi_mgr_get_dsi(DSI_CLOCK_SLAVE);

• int src_pll_id = IS_DUAL_DSI() ? DSI_CLOCK_MASTER : id; int ret;

  /* In case of dual DSI, some registers in PHY1 have been programmed

@@ -149,11 +148,11 @@ dsi_mgr_phy_enable(int id, msm_dsi_host_reset_phy(mdsi->host); msm_dsi_host_reset_phy(sdsi->host);

• 	ret = enable_phy(mdsi, src_pll_id,
  

• 	ret = enable_phy(mdsi,
  		 &shared_timings[DSI_CLOCK_MASTER]);
  if (ret)
  	return ret;
  

• 	ret = enable_phy(sdsi, src_pll_id,
  

• 	ret = enable_phy(sdsi,
  		 &shared_timings[DSI_CLOCK_SLAVE]);
  if (ret) {
  	msm_dsi_phy_disable(mdsi->phy);
  

@@ -162,7 +161,7 @@ dsi_mgr_phy_enable(int id, } } else { msm_dsi_host_reset_phy(msm_dsi->host);

• ret = enable_phy(msm_dsi, src_pll_id, &shared_timings[id]);
  

• ret = enable_phy(msm_dsi, &shared_timings[id]);
  

  if (ret) return ret; }

diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c index 56f5134e3933..2a421fd77f2f 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c @@ -753,7 +753,7 @@ void __exit msm_dsi_phy_driver_unregister(void) platform_driver_unregister(&dsi_phy_platform_driver); }

-int msm_dsi_phy_enable(struct msm_dsi_phy *phy, int src_pll_id, +int msm_dsi_phy_enable(struct msm_dsi_phy *phy, struct msm_dsi_phy_clk_request *clk_req) { struct device *dev = &phy->pdev->dev; @@ -776,7 +776,7 @@ int msm_dsi_phy_enable(struct msm_dsi_phy *phy, int src_pll_id, goto reg_en_fail; }

• ret = phy->cfg->ops.enable(phy, src_pll_id, clk_req);

• ret = phy->cfg->ops.enable(phy, clk_req); if (ret) { DRM_DEV_ERROR(dev, "%s: phy enable failed, %d\n", __func__, ret); goto phy_en_fail;

diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h index 3b207cf9f6b4..74fffcae0f10 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h @@ -19,7 +19,7 @@

struct msm_dsi_phy_ops { int (*pll_init)(struct msm_dsi_phy *phy);

• int (*enable)(struct msm_dsi_phy *phy, int src_pll_id,

• int (*enable)(struct msm_dsi_phy *phy, struct msm_dsi_phy_clk_request *clk_req); void (*disable)(struct msm_dsi_phy *phy); void (*save_state)(struct msm_dsi_phy *phy);

diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_10nm.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_10nm.c index 04535ccd11ef..bea68154ef87 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_10nm.c +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_10nm.c @@ -786,7 +786,7 @@ static void dsi_phy_hw_v3_0_lane_settings(struct msm_dsi_phy *phy) } }

-static int dsi_10nm_phy_enable(struct msm_dsi_phy *phy, int src_pll_id, +static int dsi_10nm_phy_enable(struct msm_dsi_phy *phy, struct msm_dsi_phy_clk_request *clk_req) { int ret; diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c index 7a87bed71e36..c9afa6c461ee 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c @@ -938,7 +938,7 @@ static void dsi_14nm_dphy_set_timing(struct msm_dsi_phy *phy, DSI_14nm_PHY_LN_TIMING_CTRL_11_TRIG3_CMD(0xa0)); }

-static int dsi_14nm_phy_enable(struct msm_dsi_phy *phy, int src_pll_id, +static int dsi_14nm_phy_enable(struct msm_dsi_phy *phy, struct msm_dsi_phy_clk_request *clk_req) { struct msm_dsi_dphy_timing *timing = &phy->timing; @@ -996,7 +996,7 @@ static int dsi_14nm_phy_enable(struct msm_dsi_phy *phy, int src_pll_id, dsi_phy_write(base + REG_DSI_14nm_PHY_CMN_CTRL_1, 0x00);

glbl_test_ctrl = dsi_phy_read(base + REG_DSI_14nm_PHY_CMN_GLBL_TEST_CTRL);

• if (phy->id == DSI_1 && src_pll_id == DSI_0)

• if (phy->usecase == MSM_DSI_PHY_SLAVE)

I think it should not make a difference but can we keep the check for DSI_1? So lets modify this to be: if (phy->id == DSI_1 && phy->usecase == MSM_DSI_PHY_SLAVE)

glbl_test_ctrl |= DSI_14nm_PHY_CMN_GLBL_TEST_CTRL_BITCLK_HS_SEL;

else glbl_test_ctrl &= ~DSI_14nm_PHY_CMN_GLBL_TEST_CTRL_BITCLK_HS_SEL; diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_20nm.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_20nm.c index f5b88c85a8fc..e96d789aea18 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_20nm.c +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_20nm.c @@ -63,7 +63,7 @@ static void dsi_20nm_phy_regulator_ctrl(struct msm_dsi_phy *phy, bool enable) dsi_phy_write(base + REG_DSI_20nm_PHY_REGULATOR_CTRL_0, 0x03); }

-static int dsi_20nm_phy_enable(struct msm_dsi_phy *phy, int src_pll_id, +static int dsi_20nm_phy_enable(struct msm_dsi_phy *phy, struct msm_dsi_phy_clk_request *clk_req) { struct msm_dsi_dphy_timing *timing = &phy->timing; @@ -85,7 +85,7 @@ static int dsi_20nm_phy_enable(struct msm_dsi_phy *phy, int src_pll_id, dsi_phy_write(base + REG_DSI_20nm_PHY_STRENGTH_0, 0xff);

val = dsi_phy_read(base + REG_DSI_20nm_PHY_GLBL_TEST_CTRL);

• if (src_pll_id == DSI_1)

• if (phy->id == DSI_1 && phy->usecase == MSM_DSI_PHY_STANDALONE) val |= DSI_20nm_PHY_GLBL_TEST_CTRL_BITCLK_HS_SEL; else val &= ~DSI_20nm_PHY_GLBL_TEST_CTRL_BITCLK_HS_SEL;

diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c index 9f83ab90d093..0e8f74ebb895 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c @@ -698,7 +698,7 @@ static void dsi_28nm_phy_regulator_ctrl(struct msm_dsi_phy *phy, bool enable) dsi_28nm_phy_regulator_enable_dcdc(phy); }

-static int dsi_28nm_phy_enable(struct msm_dsi_phy *phy, int src_pll_id, +static int dsi_28nm_phy_enable(struct msm_dsi_phy *phy, struct msm_dsi_phy_clk_request *clk_req) { struct msm_dsi_dphy_timing *timing = &phy->timing; @@ -745,7 +745,7 @@ static int dsi_28nm_phy_enable(struct msm_dsi_phy *phy, int src_pll_id, dsi_phy_write(base + REG_DSI_28nm_PHY_CTRL_0, 0x5f);

val = dsi_phy_read(base + REG_DSI_28nm_PHY_GLBL_TEST_CTRL);

• if (phy->id == DSI_1 && src_pll_id == DSI_0)

• if (phy->usecase == MSM_DSI_PHY_SLAVE)

same here

val &= ~DSI_28nm_PHY_GLBL_TEST_CTRL_BITCLK_HS_SEL;

else val |= DSI_28nm_PHY_GLBL_TEST_CTRL_BITCLK_HS_SEL; diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c index d2bfe43c9ef1..104446450f7c 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c @@ -585,7 +585,7 @@ static void dsi_28nm_phy_lane_config(struct msm_dsi_phy *phy) dsi_phy_write(base + REG_DSI_28nm_8960_PHY_LNCK_TEST_STR1, 0x88); }

-static int dsi_28nm_phy_enable(struct msm_dsi_phy *phy, int src_pll_id, +static int dsi_28nm_phy_enable(struct msm_dsi_phy *phy, struct msm_dsi_phy_clk_request *clk_req) { struct msm_dsi_dphy_timing *timing = &phy->timing; diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c index 619998506b78..badc76a8d425 100644 --- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c +++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c @@ -799,7 +799,7 @@ static void dsi_phy_hw_v4_0_lane_settings(struct msm_dsi_phy *phy) } }

-static int dsi_7nm_phy_enable(struct msm_dsi_phy *phy, int src_pll_id, +static int dsi_7nm_phy_enable(struct msm_dsi_phy *phy, struct msm_dsi_phy_clk_request *clk_req) { int ret;