[PATCH 9/9] drm/msm/dsi_phy_7nm: Replace parent names with clk_hw pointers
From: Marijn Suijten
Date: Mon May 23 2022 - 17:39:50 EST
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@xxxxxxxxxxxxxx>
---
drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c | 92 +++++++++++------------
1 file changed, 42 insertions(+), 50 deletions(-)
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;
--
2.36.1