phy: qcom-qmp-ufs: Switch to devm_clk_bulk_get_all() API

Device drivers should just rely on the clocks provided by the devicetree
and enable/disable them based on the requirement. There is no need to
validate the clocks provided by devicetree in the driver. That's the job
of DT schema.

So let's switch to devm_clk_bulk_get_all() API that just gets the clocks
provided by devicetree and remove hardcoded clocks info.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20240131-ufs-phy-clock-v3-2-58a49d2f4605@linaro.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>

Author: Mani-Sadhasivam

drivers/phy/qualcomm/phy-qcom-qmp-ufs.c

@@ -923,9 +923,6 @@ struct qmp_phy_cfg {
 	/* Additional sequence for different HS Gears */
 	const struct qmp_phy_cfg_tbls tbls_hs_overlay[NUM_OVERLAY];
 
-	/* clock ids to be requested */
-	const char * const *clk_list;
-	int num_clks;
 	/* regulators to be requested */
 	const char * const *vreg_list;
 	int num_vregs;
@@ -951,6 +948,7 @@ struct qmp_ufs {
 	void __iomem *rx2;
 
 	struct clk_bulk_data *clks;
+	int num_clks;
 	struct regulator_bulk_data *vregs;
 	struct reset_control *ufs_reset;
 
@@ -983,20 +981,6 @@ static inline void qphy_clrbits(void __iomem *base, u32 offset, u32 val)
 	readl(base + offset);
 }
 
-/* list of clocks required by phy */
-static const char * const msm8996_ufs_phy_clk_l[] = {
-	"ref",
-};
-
-/* the primary usb3 phy on sm8250 doesn't have a ref clock */
-static const char * const sm8450_ufs_phy_clk_l[] = {
-	"qref", "ref", "ref_aux",
-};
-
-static const char * const sdm845_ufs_phy_clk_l[] = {
-	"ref", "ref_aux",
-};
-
 /* list of regulators */
 static const char * const qmp_phy_vreg_l[] = {
 	"vdda-phy", "vdda-pll",
@@ -1035,9 +1019,6 @@ static const struct qmp_phy_cfg msm8996_ufsphy_cfg = {
 		.rx_num		= ARRAY_SIZE(msm8996_ufsphy_rx),
 	},
 
-	.clk_list		= msm8996_ufs_phy_clk_l,
-	.num_clks		= ARRAY_SIZE(msm8996_ufs_phy_clk_l),
-
 	.vreg_list		= qmp_phy_vreg_l,
 	.num_vregs		= ARRAY_SIZE(qmp_phy_vreg_l),
 
@@ -1075,8 +1056,6 @@ static const struct qmp_phy_cfg sa8775p_ufsphy_cfg = {
 		.pcs_num	= ARRAY_SIZE(sm8350_ufsphy_g4_pcs),
 		.max_gear	= UFS_HS_G4,
 	},
-	.clk_list		= sm8450_ufs_phy_clk_l,
-	.num_clks		= ARRAY_SIZE(sm8450_ufs_phy_clk_l),
 	.vreg_list		= qmp_phy_vreg_l,
 	.num_vregs		= ARRAY_SIZE(qmp_phy_vreg_l),
 	.regs			= ufsphy_v5_regs_layout,
@@ -1111,8 +1090,6 @@ static const struct qmp_phy_cfg sc7280_ufsphy_cfg = {
 		.pcs_num        = ARRAY_SIZE(sm8150_ufsphy_hs_g4_pcs),
 		.max_gear	= UFS_HS_G4,
 	},
-	.clk_list               = sm8450_ufs_phy_clk_l,
-	.num_clks               = ARRAY_SIZE(sm8450_ufs_phy_clk_l),
 	.vreg_list              = qmp_phy_vreg_l,
 	.num_vregs              = ARRAY_SIZE(qmp_phy_vreg_l),
 	.regs                   = ufsphy_v4_regs_layout,
@@ -1147,8 +1124,6 @@ static const struct qmp_phy_cfg sc8280xp_ufsphy_cfg = {
 		.pcs_num	= ARRAY_SIZE(sm8350_ufsphy_g4_pcs),
 		.max_gear	= UFS_HS_G4,
 	},
-	.clk_list		= sdm845_ufs_phy_clk_l,
-	.num_clks		= ARRAY_SIZE(sdm845_ufs_phy_clk_l),
 	.vreg_list		= qmp_phy_vreg_l,
 	.num_vregs		= ARRAY_SIZE(qmp_phy_vreg_l),
 	.regs			= ufsphy_v5_regs_layout,
@@ -1174,8 +1149,6 @@ static const struct qmp_phy_cfg sdm845_ufsphy_cfg = {
 		.serdes		= sdm845_ufsphy_hs_b_serdes,
 		.serdes_num	= ARRAY_SIZE(sdm845_ufsphy_hs_b_serdes),
 	},
-	.clk_list		= sdm845_ufs_phy_clk_l,
-	.num_clks		= ARRAY_SIZE(sdm845_ufs_phy_clk_l),
 	.vreg_list		= qmp_phy_vreg_l,
 	.num_vregs		= ARRAY_SIZE(qmp_phy_vreg_l),
 	.regs			= ufsphy_v3_regs_layout,
@@ -1203,8 +1176,6 @@ static const struct qmp_phy_cfg sm6115_ufsphy_cfg = {
 		.serdes		= sm6115_ufsphy_hs_b_serdes,
 		.serdes_num	= ARRAY_SIZE(sm6115_ufsphy_hs_b_serdes),
 	},
-	.clk_list		= sdm845_ufs_phy_clk_l,
-	.num_clks		= ARRAY_SIZE(sdm845_ufs_phy_clk_l),
 	.vreg_list		= qmp_phy_vreg_l,
 	.num_vregs		= ARRAY_SIZE(qmp_phy_vreg_l),
 	.regs			= ufsphy_v2_regs_layout,
@@ -1232,8 +1203,6 @@ static const struct qmp_phy_cfg sm7150_ufsphy_cfg = {
 		.serdes		= sdm845_ufsphy_hs_b_serdes,
 		.serdes_num	= ARRAY_SIZE(sdm845_ufsphy_hs_b_serdes),
 	},
-	.clk_list		= sdm845_ufs_phy_clk_l,
-	.num_clks		= ARRAY_SIZE(sdm845_ufs_phy_clk_l),
 	.vreg_list		= qmp_phy_vreg_l,
 	.num_vregs		= ARRAY_SIZE(qmp_phy_vreg_l),
 	.regs			= ufsphy_v3_regs_layout,
@@ -1270,8 +1239,6 @@ static const struct qmp_phy_cfg sm8150_ufsphy_cfg = {
 		.pcs_num	= ARRAY_SIZE(sm8150_ufsphy_hs_g4_pcs),
 		.max_gear	= UFS_HS_G4,
 	},
-	.clk_list		= sdm845_ufs_phy_clk_l,
-	.num_clks		= ARRAY_SIZE(sdm845_ufs_phy_clk_l),
 	.vreg_list		= qmp_phy_vreg_l,
 	.num_vregs		= ARRAY_SIZE(qmp_phy_vreg_l),
 	.regs			= ufsphy_v4_regs_layout,
@@ -1306,8 +1273,6 @@ static const struct qmp_phy_cfg sm8250_ufsphy_cfg = {
 		.pcs_num	= ARRAY_SIZE(sm8150_ufsphy_hs_g4_pcs),
 		.max_gear	= UFS_HS_G4,
 	},
-	.clk_list		= sdm845_ufs_phy_clk_l,
-	.num_clks		= ARRAY_SIZE(sdm845_ufs_phy_clk_l),
 	.vreg_list		= qmp_phy_vreg_l,
 	.num_vregs		= ARRAY_SIZE(qmp_phy_vreg_l),
 	.regs			= ufsphy_v4_regs_layout,
@@ -1342,8 +1307,6 @@ static const struct qmp_phy_cfg sm8350_ufsphy_cfg = {
 		.pcs_num	= ARRAY_SIZE(sm8350_ufsphy_g4_pcs),
 		.max_gear	= UFS_HS_G4,
 	},
-	.clk_list		= sdm845_ufs_phy_clk_l,
-	.num_clks		= ARRAY_SIZE(sdm845_ufs_phy_clk_l),
 	.vreg_list		= qmp_phy_vreg_l,
 	.num_vregs		= ARRAY_SIZE(qmp_phy_vreg_l),
 	.regs			= ufsphy_v5_regs_layout,
@@ -1378,8 +1341,6 @@ static const struct qmp_phy_cfg sm8450_ufsphy_cfg = {
 		.pcs_num	= ARRAY_SIZE(sm8350_ufsphy_g4_pcs),
 		.max_gear	= UFS_HS_G4,
 	},
-	.clk_list		= sm8450_ufs_phy_clk_l,
-	.num_clks		= ARRAY_SIZE(sm8450_ufs_phy_clk_l),
 	.vreg_list		= qmp_phy_vreg_l,
 	.num_vregs		= ARRAY_SIZE(qmp_phy_vreg_l),
 	.regs			= ufsphy_v5_regs_layout,
@@ -1425,8 +1386,6 @@ static const struct qmp_phy_cfg sm8550_ufsphy_cfg = {
 		.pcs_num	= ARRAY_SIZE(sm8550_ufsphy_g5_pcs),
 		.max_gear	= UFS_HS_G5,
 	},
-	.clk_list		= sdm845_ufs_phy_clk_l,
-	.num_clks		= ARRAY_SIZE(sdm845_ufs_phy_clk_l),
 	.vreg_list		= qmp_phy_vreg_l,
 	.num_vregs		= ARRAY_SIZE(qmp_phy_vreg_l),
 	.regs			= ufsphy_v6_regs_layout,
@@ -1448,8 +1407,6 @@ static const struct qmp_phy_cfg sm8650_ufsphy_cfg = {
 		.pcs		= sm8650_ufsphy_pcs,
 		.pcs_num	= ARRAY_SIZE(sm8650_ufsphy_pcs),
 	},
-	.clk_list		= sdm845_ufs_phy_clk_l,
-	.num_clks		= ARRAY_SIZE(sdm845_ufs_phy_clk_l),
 	.vreg_list		= qmp_phy_vreg_l,
 	.num_vregs		= ARRAY_SIZE(qmp_phy_vreg_l),
 	.regs			= ufsphy_v6_regs_layout,
@@ -1541,7 +1498,7 @@ static int qmp_ufs_com_init(struct qmp_ufs *qmp)
 		return ret;
 	}
 
-	ret = clk_bulk_prepare_enable(cfg->num_clks, qmp->clks);
+	ret = clk_bulk_prepare_enable(qmp->num_clks, qmp->clks);
 	if (ret)
 		goto err_disable_regulators;
 
@@ -1561,7 +1518,7 @@ static int qmp_ufs_com_exit(struct qmp_ufs *qmp)
 
 	reset_control_assert(qmp->ufs_reset);
 
-	clk_bulk_disable_unprepare(cfg->num_clks, qmp->clks);
+	clk_bulk_disable_unprepare(qmp->num_clks, qmp->clks);
 
 	regulator_bulk_disable(cfg->num_vregs, qmp->vregs);
 
@@ -1737,19 +1694,13 @@ static int qmp_ufs_vreg_init(struct qmp_ufs *qmp)
 
 static int qmp_ufs_clk_init(struct qmp_ufs *qmp)
 {
-	const struct qmp_phy_cfg *cfg = qmp->cfg;
 	struct device *dev = qmp->dev;
-	int num = cfg->num_clks;
-	int i;
 
-	qmp->clks = devm_kcalloc(dev, num, sizeof(*qmp->clks), GFP_KERNEL);
-	if (!qmp->clks)
-		return -ENOMEM;
+	qmp->num_clks = devm_clk_bulk_get_all(dev, &qmp->clks);
+	if (qmp->num_clks < 0)
+		return qmp->num_clks;
 
-	for (i = 0; i < num; i++)
-		qmp->clks[i].id = cfg->clk_list[i];
-
-	return devm_clk_bulk_get(dev, num, qmp->clks);
+	return 0;
 }
 
 static void qmp_ufs_clk_release_provider(void *res)