[PATCH v3 02/25] clk: versaclock3: Prepare for the addition of 5L35023 device

[Claudiu <claudiu.beznea@xxxxxxxxx>]

From: Claudiu Beznea <claudiu.beznea.uj@xxxxxxxxxxxxxx>

The 5P35023 and 5L35035 Versa 3 clock generator variants are different but
the versaclock3 driver could be used with small adjustments. The features
that are implemented in driver and differs b/w variants are the PLL2 Fvco
and clock sel bit for SE2 clock. Adjust the driver to prepare for the
addition of 5L35023 device.

Reviewed-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@xxxxxxxxxxxxxx>
---

Changes in v3:
- collected tags

Changes in v2:
- none

 drivers/clk/clk-versaclock3.c | 61 ++++++++++++++++++++++++-----------
 1 file changed, 43 insertions(+), 18 deletions(-)

diff --git a/drivers/clk/clk-versaclock3.c b/drivers/clk/clk-versaclock3.c
index 76d7ea1964c3..1398d16df5d0 100644
--- a/drivers/clk/clk-versaclock3.c
+++ b/drivers/clk/clk-versaclock3.c
@@ -78,9 +78,6 @@
 #define VC3_PLL1_VCO_MIN		300000000UL
 #define VC3_PLL1_VCO_MAX		600000000UL
 
-#define VC3_PLL2_VCO_MIN		400000000UL
-#define VC3_PLL2_VCO_MAX		1200000000UL
-
 #define VC3_PLL3_VCO_MIN		300000000UL
 #define VC3_PLL3_VCO_MAX		800000000UL
 
@@ -147,9 +144,13 @@ struct vc3_pfd_data {
 	u8 mdiv2_bitmsk;
 };
 
+struct vc3_vco {
+	unsigned long min;
+	unsigned long max;
+};
+
 struct vc3_pll_data {
-	unsigned long vco_min;
-	unsigned long vco_max;
+	struct vc3_vco vco;
 	u8 num;
 	u8 int_div_msb_offs;
 	u8 int_div_lsb_offs;
@@ -166,12 +167,17 @@ struct vc3_div_data {
 struct vc3_hw_data {
 	struct clk_hw hw;
 	struct regmap *regmap;
-	const void *data;
+	void *data;
 
 	u32 div_int;
 	u32 div_frc;
 };
 
+struct vc3_hw_cfg {
+	struct vc3_vco pll2_vco;
+	u32 se2_clk_sel_msk;
+};
+
 static const struct clk_div_table div1_divs[] = {
 	{ .val = 0, .div = 1, }, { .val = 1, .div = 4, },
 	{ .val = 2, .div = 5, }, { .val = 3, .div = 6, },
@@ -386,10 +392,10 @@ static long vc3_pll_round_rate(struct clk_hw *hw, unsigned long rate,
 	const struct vc3_pll_data *pll = vc3->data;
 	u64 div_frc;
 
-	if (rate < pll->vco_min)
-		rate = pll->vco_min;
-	if (rate > pll->vco_max)
-		rate = pll->vco_max;
+	if (rate < pll->vco.min)
+		rate = pll->vco.min;
+	if (rate > pll->vco.max)
+		rate = pll->vco.max;
 
 	vc3->div_int = rate / *parent_rate;
 
@@ -680,8 +686,10 @@ static struct vc3_hw_data clk_pll[] = {
 			.num = VC3_PLL1,
 			.int_div_msb_offs = VC3_PLL1_LOOP_FILTER_N_DIV_MSB,
 			.int_div_lsb_offs = VC3_PLL1_VCO_N_DIVIDER,
-			.vco_min = VC3_PLL1_VCO_MIN,
-			.vco_max = VC3_PLL1_VCO_MAX
+			.vco = {
+				.min = VC3_PLL1_VCO_MIN,
+				.max = VC3_PLL1_VCO_MAX
+			}
 		},
 		.hw.init = &(struct clk_init_data) {
 			.name = "pll1",
@@ -698,8 +706,6 @@ static struct vc3_hw_data clk_pll[] = {
 			.num = VC3_PLL2,
 			.int_div_msb_offs = VC3_PLL2_FB_INT_DIV_MSB,
 			.int_div_lsb_offs = VC3_PLL2_FB_INT_DIV_LSB,
-			.vco_min = VC3_PLL2_VCO_MIN,
-			.vco_max = VC3_PLL2_VCO_MAX
 		},
 		.hw.init = &(struct clk_init_data) {
 			.name = "pll2",
@@ -716,8 +722,10 @@ static struct vc3_hw_data clk_pll[] = {
 			.num = VC3_PLL3,
 			.int_div_msb_offs = VC3_PLL3_LOOP_FILTER_N_DIV_MSB,
 			.int_div_lsb_offs = VC3_PLL3_N_DIVIDER,
-			.vco_min = VC3_PLL3_VCO_MIN,
-			.vco_max = VC3_PLL3_VCO_MAX
+			.vco = {
+				.min = VC3_PLL3_VCO_MIN,
+				.max = VC3_PLL3_VCO_MAX
+			}
 		},
 		.hw.init = &(struct clk_init_data) {
 			.name = "pll3",
@@ -901,7 +909,6 @@ static struct vc3_hw_data clk_mux[] = {
 	[VC3_SE2_MUX] = {
 		.data = &(struct vc3_clk_data) {
 			.offs = VC3_SE2_CTRL_REG0,
-			.bitmsk = VC3_SE2_CTRL_REG0_SE2_CLK_SEL
 		},
 		.hw.init = &(struct clk_init_data) {
 			.name = "se2_mux",
@@ -982,6 +989,7 @@ static int vc3_probe(struct i2c_client *client)
 {
 	struct device *dev = &client->dev;
 	u8 settings[NUM_CONFIG_REGISTERS];
+	const struct vc3_hw_cfg *data;
 	struct regmap *regmap;
 	const char *name;
 	int ret, i;
@@ -1029,9 +1037,16 @@ static int vc3_probe(struct i2c_client *client)
 					     clk_pfd[i].hw.init->name);
 	}
 
+	data = i2c_get_match_data(client);
+
 	/* Register pll's */
 	for (i = 0; i < ARRAY_SIZE(clk_pll); i++) {
 		clk_pll[i].regmap = regmap;
+		if (i == VC3_PLL2) {
+			struct vc3_pll_data *pll_data = clk_pll[i].data;
+
+			pll_data->vco = data->pll2_vco;
+		}
 		ret = devm_clk_hw_register(dev, &clk_pll[i].hw);
 		if (ret)
 			return dev_err_probe(dev, ret, "%s failed\n",
@@ -1059,6 +1074,11 @@ static int vc3_probe(struct i2c_client *client)
 	/* Register clk muxes */
 	for (i = 0; i < ARRAY_SIZE(clk_mux); i++) {
 		clk_mux[i].regmap = regmap;
+		if (i == VC3_SE2_MUX) {
+			struct vc3_clk_data *clk_data = clk_mux[i].data;
+
+			clk_data->bitmsk = data->se2_clk_sel_msk;
+		}
 		ret = devm_clk_hw_register(dev, &clk_mux[i].hw);
 		if (ret)
 			return dev_err_probe(dev, ret, "%s failed\n",
@@ -1108,8 +1128,13 @@ static int vc3_probe(struct i2c_client *client)
 	return ret;
 }
 
+static const struct vc3_hw_cfg vc3_5p = {
+	.pll2_vco = { .min = 400000000UL, .max = 1200000000UL },
+	.se2_clk_sel_msk = BIT(6),
+};
+
 static const struct of_device_id dev_ids[] = {
-	{ .compatible = "renesas,5p35023" },
+	{ .compatible = "renesas,5p35023", .data = &vc3_5p },
 	{ /* Sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, dev_ids);
-- 
2.39.2