phy: cadence: Sierra: Add array of input clocks in "struct cdns_sierra_phy"

Instead of having separate structure members for each input clock, add
an array for the input clocks within "struct cdns_sierra_phy". This is
in preparation for adding more input clocks required for supporting
additional clock combination.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Reviewed-by: Swapnil Jakhade <sjakhade@cadence.com>
Link: https://lore.kernel.org/r/20210319124128.13308-10-kishon@ti.comSigned-off-by: Vinod Koul <vkoul@kernel.org>

drivers/phy/cadence/phy-cadence-sierra.c

@@ -144,6 +144,13 @@
 #define SIERRA_MAX_LANES				16
 #define PLL_LOCK_TIME					100000
 
+#define CDNS_SIERRA_INPUT_CLOCKS			3
+enum cdns_sierra_clock_input {
+	PHY_CLK,
+	CMN_REFCLK_DIG_DIV,
+	CMN_REFCLK1_DIG_DIV,
+};
+
 static const struct reg_field macro_id_type =
 				REG_FIELD(SIERRA_MACRO_ID_REG, 0, 15);
 static const struct reg_field phy_pll_cfg_1 =
@@ -197,9 +204,7 @@ struct cdns_sierra_phy {
 	struct regmap_field *macro_id_type;
 	struct regmap_field *phy_pll_cfg_1;
 	struct regmap_field *pllctrl_lock[SIERRA_MAX_LANES];
-	struct clk *clk;
-	struct clk *cmn_refclk_dig_div;
-	struct clk *cmn_refclk1_dig_div;
+	struct clk *input_clks[CDNS_SIERRA_INPUT_CLOCKS];
 	int nsubnodes;
 	u32 num_lanes;
 	bool autoconf;
@@ -281,8 +286,8 @@ static int cdns_sierra_phy_init(struct phy *gphy)
 	if (phy->autoconf)
 		return 0;
 
-	clk_set_rate(phy->cmn_refclk_dig_div, 25000000);
-	clk_set_rate(phy->cmn_refclk1_dig_div, 25000000);
+	clk_set_rate(phy->input_clks[CMN_REFCLK_DIG_DIV], 25000000);
+	clk_set_rate(phy->input_clks[CMN_REFCLK1_DIG_DIV], 25000000);
 	if (ins->phy_type == PHY_TYPE_PCIE) {
 		num_cmn_regs = phy->init_data->pcie_cmn_regs;
 		num_ln_regs = phy->init_data->pcie_ln_regs;
@@ -488,7 +493,7 @@ static int cdns_sierra_phy_get_clocks(struct cdns_sierra_phy *sp,
 		dev_err(dev, "failed to get clock phy_clk\n");
 		return PTR_ERR(clk);
 	}
-	sp->clk = clk;
+	sp->input_clks[PHY_CLK] = clk;
 
 	clk = devm_clk_get_optional(dev, "cmn_refclk_dig_div");
 	if (IS_ERR(clk)) {
@@ -496,7 +501,7 @@ static int cdns_sierra_phy_get_clocks(struct cdns_sierra_phy *sp,
 		ret = PTR_ERR(clk);
 		return ret;
 	}
-	sp->cmn_refclk_dig_div = clk;
+	sp->input_clks[CMN_REFCLK_DIG_DIV] = clk;
 
 	clk = devm_clk_get_optional(dev, "cmn_refclk1_dig_div");
 	if (IS_ERR(clk)) {
@@ -504,7 +509,7 @@ static int cdns_sierra_phy_get_clocks(struct cdns_sierra_phy *sp,
 		ret = PTR_ERR(clk);
 		return ret;
 	}
-	sp->cmn_refclk1_dig_div = clk;
+	sp->input_clks[CMN_REFCLK1_DIG_DIV] = clk;
 
 	return 0;
 }
@@ -585,7 +590,7 @@ static int cdns_sierra_phy_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	ret = clk_prepare_enable(sp->clk);
+	ret = clk_prepare_enable(sp->input_clks[PHY_CLK]);
 	if (ret)
 		return ret;
 
@@ -662,7 +667,7 @@ static int cdns_sierra_phy_probe(struct platform_device *pdev)
 		reset_control_put(sp->phys[i].lnk_rst);
 	of_node_put(child);
 clk_disable:
-	clk_disable_unprepare(sp->clk);
+	clk_disable_unprepare(sp->input_clks[PHY_CLK]);
 	reset_control_assert(sp->apb_rst);
 	return ret;
 }