[v2,19/28] drm/msm/dpu: simplify vco_delay handling in dsi_phy_28nm driver

Message ID 20210324151846.2774204-20-dmitry.baryshkov@linaro.org
State Superseded
Headers show
Series
  • drm/msm/dsi: refactor MSM DSI PHY/PLL drivers
Related show

Commit Message

Dmitry Baryshkov March 24, 2021, 3:18 p.m.
Instead of setting the variable and then using it just in the one place,
determine vco_delay directly at the PLL configuration time.

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

---
 drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

-- 
2.30.2

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Patch

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 3e9b7949b038..87d1aa4114e4 100644
--- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c
@@ -72,8 +72,6 @@  struct dsi_pll_28nm {
 	struct platform_device *pdev;
 	void __iomem *mmio;
 
-	int vco_delay;
-
 	struct pll_28nm_cached_state cached_state;
 };
 
@@ -212,8 +210,10 @@  static int dsi_pll_28nm_clk_set_rate(struct clk_hw *hw, unsigned long rate,
 	pll_write(base + REG_DSI_28nm_PHY_PLL_SDM_CFG4, 0x00);
 
 	/* Add hardware recommended delay for correct PLL configuration */
-	if (pll_28nm->vco_delay)
-		udelay(pll_28nm->vco_delay);
+	if (pll->cfg->type == MSM_DSI_PHY_28NM_HPM)
+		udelay(1);
+	else /* LP */
+		udelay(1000);
 
 	pll_write(base + REG_DSI_28nm_PHY_PLL_REFCLK_CFG, refclk_cfg);
 	pll_write(base + REG_DSI_28nm_PHY_PLL_PWRGEN_CFG, 0x00);
@@ -580,10 +580,6 @@  static int dsi_pll_28nm_init(struct msm_dsi_phy *phy)
 
 	pll = &pll_28nm->base;
 	pll->cfg = phy->cfg;
-	if (phy->cfg->quirks & DSI_PHY_28NM_QUIRK_PHY_LP)
-		pll_28nm->vco_delay = 1000;
-	else
-		pll_28nm->vco_delay = 1;
 
 	ret = pll_28nm_register(pll_28nm, phy->provided_clocks->hws);
 	if (ret) {