diff mbox series

[9/9] drm/msm/dsi_phy_7nm: Replace parent names with clk_hw pointers

Message ID 20220523213837.1016542-10-marijn.suijten@somainline.org (mailing list archive)
State Superseded
Headers show
Series drm/msm/dsi_phy: Replace parent names with clk_hw pointers | expand

Commit Message

Marijn Suijten May 23, 2022, 9:38 p.m. UTC 
parent_hw pointers are easier to manage and cheaper to use than
repeatedly formatting the parent name and subsequently leaving the clk
framework to perform lookups based on that name.

Signed-off-by: Marijn Suijten <marijn.suijten@somainline.org>
---
 drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c | 92 +++++++++++------------
 1 file changed, 42 insertions(+), 50 deletions(-)

--
2.36.1

Comments

Dmitry Baryshkov May 23, 2022, 10:52 p.m. UTC | #1 
On Tue, 24 May 2022 at 00:39, Marijn Suijten
<marijn.suijten@somainline.org> wrote:
>
> parent_hw pointers are easier to manage and cheaper to use than
> repeatedly formatting the parent name and subsequently leaving the clk
> framework to perform lookups based on that name.
>
> Signed-off-by: Marijn Suijten <marijn.suijten@somainline.org>

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

> ---
>  drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c | 92 +++++++++++------------
>  1 file changed, 42 insertions(+), 50 deletions(-)
>
diff mbox series

Patch

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 66ed1919a1db..76a9d5094e1b 100644
--- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c
@@ -585,8 +585,7 @@  static int dsi_7nm_set_usecase(struct msm_dsi_phy *phy)
  */
 static int pll_7nm_register(struct dsi_pll_7nm *pll_7nm, struct clk_hw **provided_clocks)
 {
-	char clk_name[32], parent[32], vco_name[32];
-	char parent2[32];
+	char clk_name[32], vco_name[32];
 	struct clk_init_data vco_init = {
 		.parent_data = &(const struct clk_parent_data) {
 			.fw_name = "ref",
@@ -597,7 +596,8 @@  static int pll_7nm_register(struct dsi_pll_7nm *pll_7nm, struct clk_hw **provide
 		.ops = &clk_ops_dsi_pll_7nm_vco,
 	};
 	struct device *dev = &pll_7nm->phy->pdev->dev;
-	struct clk_hw *hw;
+	struct clk_hw *hw, *pll_out_div, *pll_bit, *pll_by_2_bit;
+	struct clk_hw *pll_post_out_div, *phy_pll_out_dsi_parent;
 	int ret;

 	DBG("DSI%d", pll_7nm->phy->id);
@@ -610,40 +610,35 @@  static int pll_7nm_register(struct dsi_pll_7nm *pll_7nm, struct clk_hw **provide
 		return ret;

 	snprintf(clk_name, 32, "dsi%d_pll_out_div_clk", pll_7nm->phy->id);
-	snprintf(parent, 32, "dsi%dvco_clk", pll_7nm->phy->id);

-	hw = devm_clk_hw_register_divider(dev, clk_name,
-				     parent, CLK_SET_RATE_PARENT,
-				     pll_7nm->phy->pll_base +
-				     REG_DSI_7nm_PHY_PLL_PLL_OUTDIV_RATE,
-				     0, 2, CLK_DIVIDER_POWER_OF_TWO, NULL);
-	if (IS_ERR(hw)) {
-		ret = PTR_ERR(hw);
+	pll_out_div = devm_clk_hw_register_divider_parent_hw(dev, clk_name,
+			&pll_7nm->clk_hw, CLK_SET_RATE_PARENT,
+			pll_7nm->phy->pll_base +
+			REG_DSI_7nm_PHY_PLL_PLL_OUTDIV_RATE,
+			0, 2, CLK_DIVIDER_POWER_OF_TWO, NULL);
+	if (IS_ERR(pll_out_div)) {
+		ret = PTR_ERR(pll_out_div);
 		goto fail;
 	}

 	snprintf(clk_name, 32, "dsi%d_pll_bit_clk", pll_7nm->phy->id);
-	snprintf(parent, 32, "dsi%d_pll_out_div_clk", pll_7nm->phy->id);

 	/* BIT CLK: DIV_CTRL_3_0 */
-	hw = devm_clk_hw_register_divider(dev, clk_name, parent,
-				     CLK_SET_RATE_PARENT,
-				     pll_7nm->phy->base +
-				     REG_DSI_7nm_PHY_CMN_CLK_CFG0,
-				     0, 4, CLK_DIVIDER_ONE_BASED,
-				     &pll_7nm->postdiv_lock);
-	if (IS_ERR(hw)) {
-		ret = PTR_ERR(hw);
+	pll_bit = devm_clk_hw_register_divider_parent_hw(dev, clk_name,
+			pll_out_div, CLK_SET_RATE_PARENT,
+			pll_7nm->phy->base + REG_DSI_7nm_PHY_CMN_CLK_CFG0,
+			0, 4, CLK_DIVIDER_ONE_BASED, &pll_7nm->postdiv_lock);
+	if (IS_ERR(pll_bit)) {
+		ret = PTR_ERR(pll_bit);
 		goto fail;
 	}

 	snprintf(clk_name, 32, "dsi%d_phy_pll_out_byteclk", pll_7nm->phy->id);
-	snprintf(parent, 32, "dsi%d_pll_bit_clk", pll_7nm->phy->id);

 	/* DSI Byte clock = VCO_CLK / OUT_DIV / BIT_DIV / 8 */
-	hw = devm_clk_hw_register_fixed_factor(dev, clk_name, parent,
-					  CLK_SET_RATE_PARENT, 1,
-					  pll_7nm->phy->cphy_mode ? 7 : 8);
+	hw = devm_clk_hw_register_fixed_factor_parent_hw(dev, clk_name,
+			pll_bit, CLK_SET_RATE_PARENT, 1,
+			pll_7nm->phy->cphy_mode ? 7 : 8);
 	if (IS_ERR(hw)) {
 		ret = PTR_ERR(hw);
 		goto fail;
@@ -652,24 +647,24 @@  static int pll_7nm_register(struct dsi_pll_7nm *pll_7nm, struct clk_hw **provide
 	provided_clocks[DSI_BYTE_PLL_CLK] = hw;

 	snprintf(clk_name, 32, "dsi%d_pll_by_2_bit_clk", pll_7nm->phy->id);
-	snprintf(parent, 32, "dsi%d_pll_bit_clk", pll_7nm->phy->id);

-	hw = devm_clk_hw_register_fixed_factor(dev, clk_name, parent,
-					  0, 1, 2);
-	if (IS_ERR(hw)) {
-		ret = PTR_ERR(hw);
+	pll_by_2_bit = devm_clk_hw_register_fixed_factor_parent_hw(dev,
+			clk_name, pll_bit, 0, 1, 2);
+	if (IS_ERR(pll_by_2_bit)) {
+		ret = PTR_ERR(pll_by_2_bit);
 		goto fail;
 	}

 	snprintf(clk_name, 32, "dsi%d_pll_post_out_div_clk", pll_7nm->phy->id);
-	snprintf(parent, 32, "dsi%d_pll_out_div_clk", pll_7nm->phy->id);

 	if (pll_7nm->phy->cphy_mode)
-		hw = devm_clk_hw_register_fixed_factor(dev, clk_name, parent, 0, 2, 7);
+		pll_post_out_div = devm_clk_hw_register_fixed_factor_parent_hw(
+				dev, clk_name, pll_out_div, 0, 2, 7);
 	else
-		hw = devm_clk_hw_register_fixed_factor(dev, clk_name, parent, 0, 1, 4);
-	if (IS_ERR(hw)) {
-		ret = PTR_ERR(hw);
+		pll_post_out_div = devm_clk_hw_register_fixed_factor_parent_hw(
+				dev, clk_name, pll_out_div, 0, 1, 4);
+	if (IS_ERR(pll_post_out_div)) {
+		ret = PTR_ERR(pll_post_out_div);
 		goto fail;
 	}

@@ -682,34 +677,31 @@  static int pll_7nm_register(struct dsi_pll_7nm *pll_7nm, struct clk_hw **provide
 		data = dsi_phy_read(pll_7nm->phy->base + REG_DSI_7nm_PHY_CMN_CLK_CFG1);
 		dsi_phy_write(pll_7nm->phy->base + REG_DSI_7nm_PHY_CMN_CLK_CFG1, data | 3);

-		snprintf(parent, 32, "dsi%d_pll_post_out_div_clk", pll_7nm->phy->id);
+		phy_pll_out_dsi_parent = pll_post_out_div;
 	} else {
 		snprintf(clk_name, 32, "dsi%d_pclk_mux", pll_7nm->phy->id);
-		snprintf(parent, 32, "dsi%d_pll_bit_clk", pll_7nm->phy->id);
-		snprintf(parent2, 32, "dsi%d_pll_by_2_bit_clk", pll_7nm->phy->id);
-
-		hw = devm_clk_hw_register_mux(dev, clk_name,
-					((const char *[]){
-					parent, parent2,
-					}), 2, 0, pll_7nm->phy->base +
-					REG_DSI_7nm_PHY_CMN_CLK_CFG1,
-					0, 1, 0, NULL);
+
+		hw = devm_clk_hw_register_mux_parent_hws(dev, clk_name,
+				((const struct clk_hw *[]){
+					pll_bit,
+					pll_by_2_bit,
+				}), 2, 0, pll_7nm->phy->base +
+				REG_DSI_7nm_PHY_CMN_CLK_CFG1, 0, 1, 0, NULL);
 		if (IS_ERR(hw)) {
 			ret = PTR_ERR(hw);
 			goto fail;
 		}

-		snprintf(parent, 32, "dsi%d_pclk_mux", pll_7nm->phy->id);
+		phy_pll_out_dsi_parent = hw;
 	}

 	snprintf(clk_name, 32, "dsi%d_phy_pll_out_dsiclk", pll_7nm->phy->id);

 	/* PIX CLK DIV : DIV_CTRL_7_4*/
-	hw = devm_clk_hw_register_divider(dev, clk_name, parent,
-				     0, pll_7nm->phy->base +
-					REG_DSI_7nm_PHY_CMN_CLK_CFG0,
-				     4, 4, CLK_DIVIDER_ONE_BASED,
-				     &pll_7nm->postdiv_lock);
+	hw = devm_clk_hw_register_divider_parent_hw(dev, clk_name,
+			phy_pll_out_dsi_parent,
+			0, pll_7nm->phy->base + REG_DSI_7nm_PHY_CMN_CLK_CFG0,
+			4, 4, CLK_DIVIDER_ONE_BASED, &pll_7nm->postdiv_lock);
 	if (IS_ERR(hw)) {
 		ret = PTR_ERR(hw);
 		goto fail;