[PATCH 1/6] clk: qcom: apss-ipq-pll: refactor the driver to accommodate different PLL types

[Kathiravan T <quic_kathirav@xxxxxxxxxxx>]

APSS PLL found on the IPQ8074 and IPQ6018 are of type Huayra PLL. But,
IPQ5332 APSS PLL is of type Stromer Plus. To accommodate both these PLLs,
refactor the driver to take the clk_alpha_pll, alpha_pll_config via device
data.

Signed-off-by: Kathiravan T <quic_kathirav@xxxxxxxxxxx>
---
 drivers/clk/qcom/apss-ipq-pll.c | 55 +++++++++++++++++++++------------
 1 file changed, 36 insertions(+), 19 deletions(-)

diff --git a/drivers/clk/qcom/apss-ipq-pll.c b/drivers/clk/qcom/apss-ipq-pll.c
index a5aea27eb867..6e815e8b7fe4 100644
--- a/drivers/clk/qcom/apss-ipq-pll.c
+++ b/drivers/clk/qcom/apss-ipq-pll.c
@@ -8,20 +8,22 @@
 
 #include "clk-alpha-pll.h"
 
-static const u8 ipq_pll_offsets[] = {
-	[PLL_OFF_L_VAL] = 0x08,
-	[PLL_OFF_ALPHA_VAL] = 0x10,
-	[PLL_OFF_USER_CTL] = 0x18,
-	[PLL_OFF_CONFIG_CTL] = 0x20,
-	[PLL_OFF_CONFIG_CTL_U] = 0x24,
-	[PLL_OFF_STATUS] = 0x28,
-	[PLL_OFF_TEST_CTL] = 0x30,
-	[PLL_OFF_TEST_CTL_U] = 0x34,
+static const u8 ipq_pll_offsets[][PLL_OFF_MAX_REGS] = {
+	[CLK_ALPHA_PLL_TYPE_HUAYRA] =  {
+		[PLL_OFF_L_VAL] = 0x08,
+		[PLL_OFF_ALPHA_VAL] = 0x10,
+		[PLL_OFF_USER_CTL] = 0x18,
+		[PLL_OFF_CONFIG_CTL] = 0x20,
+		[PLL_OFF_CONFIG_CTL_U] = 0x24,
+		[PLL_OFF_STATUS] = 0x28,
+		[PLL_OFF_TEST_CTL] = 0x30,
+		[PLL_OFF_TEST_CTL_U] = 0x34,
+	},
 };
 
-static struct clk_alpha_pll ipq_pll = {
+static struct clk_alpha_pll ipq_pll_huayra = {
 	.offset = 0x0,
-	.regs = ipq_pll_offsets,
+	.regs = ipq_pll_offsets[CLK_ALPHA_PLL_TYPE_HUAYRA],
 	.flags = SUPPORTS_DYNAMIC_UPDATE,
 	.clkr = {
 		.enable_reg = 0x0,
@@ -61,6 +63,21 @@ static const struct alpha_pll_config ipq8074_pll_config = {
 	.test_ctl_hi_val = 0x4000,
 };
 
+struct apss_pll_data {
+	struct clk_alpha_pll *pll;
+	const struct alpha_pll_config *pll_config;
+};
+
+static struct apss_pll_data ipq8074_pll_data = {
+	.pll = &ipq_pll_huayra,
+	.pll_config = &ipq8074_pll_config,
+};
+
+static struct apss_pll_data ipq6018_pll_data = {
+	.pll = &ipq_pll_huayra,
+	.pll_config = &ipq6018_pll_config,
+};
+
 static const struct regmap_config ipq_pll_regmap_config = {
 	.reg_bits		= 32,
 	.reg_stride		= 4,
@@ -71,7 +88,7 @@ static const struct regmap_config ipq_pll_regmap_config = {
 
 static int apss_ipq_pll_probe(struct platform_device *pdev)
 {
-	const struct alpha_pll_config *ipq_pll_config;
+	const struct apss_pll_data *data;
 	struct device *dev = &pdev->dev;
 	struct regmap *regmap;
 	void __iomem *base;
@@ -85,23 +102,23 @@ static int apss_ipq_pll_probe(struct platform_device *pdev)
 	if (IS_ERR(regmap))
 		return PTR_ERR(regmap);
 
-	ipq_pll_config = of_device_get_match_data(&pdev->dev);
-	if (!ipq_pll_config)
+	data = of_device_get_match_data(&pdev->dev);
+	if (!data)
 		return -ENODEV;
 
-	clk_alpha_pll_configure(&ipq_pll, regmap, ipq_pll_config);
+	clk_alpha_pll_configure(data->pll, regmap, data->pll_config);
 
-	ret = devm_clk_register_regmap(dev, &ipq_pll.clkr);
+	ret = devm_clk_register_regmap(dev, &data->pll->clkr);
 	if (ret)
 		return ret;
 
 	return devm_of_clk_add_hw_provider(dev, of_clk_hw_simple_get,
-					   &ipq_pll.clkr.hw);
+					   &data->pll->clkr.hw);
 }
 
 static const struct of_device_id apss_ipq_pll_match_table[] = {
-	{ .compatible = "qcom,ipq6018-a53pll", .data = &ipq6018_pll_config },
-	{ .compatible = "qcom,ipq8074-a53pll", .data = &ipq8074_pll_config },
+	{ .compatible = "qcom,ipq6018-a53pll", .data = &ipq6018_pll_data },
+	{ .compatible = "qcom,ipq8074-a53pll", .data = &ipq8074_pll_data },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, apss_ipq_pll_match_table);
-- 
2.34.1