1 files changed, 65 insertions, 62 deletions

diff --git a/drivers/clk/clk-lmk04832.c b/drivers/clk/clk-lmk04832.c
index e22ac93e0c2f..b2107b31efa2 100644
--- a/drivers/clk/clk-lmk04832.c
+++ b/drivers/clk/clk-lmk04832.c
@@ -134,6 +134,11 @@
 /* 0x14b - 0x152 Holdover */
 
 /* 0x153 - 0x15f PLL1 Configuration */
+#define LMK04832_REG_PLL1_LD		0x15f
+#define LMK04832_BIT_PLL1_LD_MUX		GENMASK(7, 3)
+#define LMK04832_VAL_PLL1_LD_MUX_SPI_RDBK		0x07
+#define LMK04832_BIT_PLL1_LD_TYPE		GENMASK(2, 0)
+#define LMK04832_VAL_PLL1_LD_TYPE_OUT_PP		0x03
 
 /* 0x160 - 0x16e PLL2 Configuration */
 #define LMK04832_REG_PLL2_R_MSB		0x160
@@ -206,6 +211,7 @@ enum lmk04832_rdbk_type {
 	RDBK_CLKIN_SEL0,
 	RDBK_CLKIN_SEL1,
 	RDBK_RESET,
+	RDBK_PLL1_LD,
 };
 
 struct lmk_dclk {
@@ -369,7 +375,7 @@ static unsigned long lmk04832_vco_recalc_rate(struct clk_hw *hw,
 					      unsigned long prate)
 {
 	struct lmk04832 *lmk = container_of(hw, struct lmk04832, vco);
-	const unsigned int pll2_p[] = {8, 2, 2, 3, 4, 5, 6, 7};
+	static const unsigned int pll2_p[] = {8, 2, 2, 3, 4, 5, 6, 7};
 	unsigned int pll2_n, p, pll2_r;
 	unsigned int pll2_misc;
 	unsigned long vco_rate;
@@ -485,28 +491,33 @@ static long lmk04832_calc_pll2_params(unsigned long prate, unsigned long rate,
 	return DIV_ROUND_CLOSEST(prate * 2 * pll2_p * pll2_n, pll2_r);
 }
 
-static long lmk04832_vco_round_rate(struct clk_hw *hw, unsigned long rate,
-				    unsigned long *prate)
+static int lmk04832_vco_determine_rate(struct clk_hw *hw,
+				       struct clk_rate_request *req)
 {
 	struct lmk04832 *lmk = container_of(hw, struct lmk04832, vco);
 	unsigned int n, p, r;
 	long vco_rate;
 	int ret;
 
-	ret = lmk04832_check_vco_ranges(lmk, rate);
+	ret = lmk04832_check_vco_ranges(lmk, req->rate);
 	if (ret < 0)
 		return ret;
 
-	vco_rate = lmk04832_calc_pll2_params(*prate, rate, &n, &p, &r);
+	vco_rate = lmk04832_calc_pll2_params(req->best_parent_rate, req->rate,
+					     &n, &p, &r);
 	if (vco_rate < 0) {
 		dev_err(lmk->dev, "PLL2 parameters out of range\n");
-		return vco_rate;
+		req->rate = vco_rate;
+
+		return 0;
 	}
 
-	if (rate != vco_rate)
+	if (req->rate != vco_rate)
 		return -EINVAL;
 
-	return vco_rate;
+	req->rate = vco_rate;
+
+	return 0;
 }
 
 static int lmk04832_vco_set_rate(struct clk_hw *hw, unsigned long rate,
@@ -573,7 +584,7 @@ static const struct clk_ops lmk04832_vco_ops = {
 	.prepare = lmk04832_vco_prepare,
 	.unprepare = lmk04832_vco_unprepare,
 	.recalc_rate = lmk04832_vco_recalc_rate,
-	.round_rate = lmk04832_vco_round_rate,
+	.determine_rate = lmk04832_vco_determine_rate,
 	.set_rate = lmk04832_vco_set_rate,
 };
 
@@ -631,7 +642,7 @@ static int lmk04832_register_vco(struct lmk04832 *lmk)
 
 static int lmk04832_clkout_set_ddly(struct lmk04832 *lmk, int id)
 {
-	const int dclk_div_adj[] = {0, 0, -2, -2, 0, 3, -1, 0};
+	static const int dclk_div_adj[] = {0, 0, -2, -2, 0, 3, -1, 0};
 	unsigned int sclkx_y_ddly = 10;
 	unsigned int dclkx_y_ddly;
 	unsigned int dclkx_y_div;
@@ -882,25 +893,27 @@ static unsigned long lmk04832_sclk_recalc_rate(struct clk_hw *hw,
 	return DIV_ROUND_CLOSEST(prate, sysref_div);
 }
 
-static long lmk04832_sclk_round_rate(struct clk_hw *hw, unsigned long rate,
-				     unsigned long *prate)
+static int lmk04832_sclk_determine_rate(struct clk_hw *hw,
+					struct clk_rate_request *req)
 {
 	struct lmk04832 *lmk = container_of(hw, struct lmk04832, sclk);
 	unsigned long sclk_rate;
 	unsigned int sysref_div;
 
-	sysref_div = DIV_ROUND_CLOSEST(*prate, rate);
-	sclk_rate = DIV_ROUND_CLOSEST(*prate, sysref_div);
+	sysref_div = DIV_ROUND_CLOSEST(req->best_parent_rate, req->rate);
+	sclk_rate = DIV_ROUND_CLOSEST(req->best_parent_rate, sysref_div);
 
 	if (sysref_div < 0x07 || sysref_div > 0x1fff) {
 		dev_err(lmk->dev, "SYSREF divider out of range\n");
 		return -EINVAL;
 	}
 
-	if (rate != sclk_rate)
+	if (req->rate != sclk_rate)
 		return -EINVAL;
 
-	return sclk_rate;
+	req->rate = sclk_rate;
+
+	return 0;
 }
 
 static int lmk04832_sclk_set_rate(struct clk_hw *hw, unsigned long rate,
@@ -939,7 +952,7 @@ static const struct clk_ops lmk04832_sclk_ops = {
 	.prepare = lmk04832_sclk_prepare,
 	.unprepare = lmk04832_sclk_unprepare,
 	.recalc_rate = lmk04832_sclk_recalc_rate,
-	.round_rate = lmk04832_sclk_round_rate,
+	.determine_rate = lmk04832_sclk_determine_rate,
 	.set_rate = lmk04832_sclk_set_rate,
 };
 
@@ -1063,26 +1076,28 @@ static unsigned long lmk04832_dclk_recalc_rate(struct clk_hw *hw,
 	return rate;
 }
 
-static long lmk04832_dclk_round_rate(struct clk_hw *hw, unsigned long rate,
-				     unsigned long *prate)
+static int lmk04832_dclk_determine_rate(struct clk_hw *hw,
+					struct clk_rate_request *req)
 {
 	struct lmk_dclk *dclk = container_of(hw, struct lmk_dclk, hw);
 	struct lmk04832 *lmk = dclk->lmk;
 	unsigned long dclk_rate;
 	unsigned int dclk_div;
 
-	dclk_div = DIV_ROUND_CLOSEST(*prate, rate);
-	dclk_rate = DIV_ROUND_CLOSEST(*prate, dclk_div);
+	dclk_div = DIV_ROUND_CLOSEST(req->best_parent_rate, req->rate);
+	dclk_rate = DIV_ROUND_CLOSEST(req->best_parent_rate, dclk_div);
 
 	if (dclk_div < 1 || dclk_div > 0x3ff) {
 		dev_err(lmk->dev, "%s_div out of range\n", clk_hw_get_name(hw));
 		return -EINVAL;
 	}
 
-	if (rate != dclk_rate)
+	if (req->rate != dclk_rate)
 		return -EINVAL;
 
-	return dclk_rate;
+	req->rate = dclk_rate;
+
+	return 0;
 }
 
 static int lmk04832_dclk_set_rate(struct clk_hw *hw, unsigned long rate,
@@ -1152,7 +1167,7 @@ static const struct clk_ops lmk04832_dclk_ops = {
 	.prepare = lmk04832_dclk_prepare,
 	.unprepare = lmk04832_dclk_unprepare,
 	.recalc_rate = lmk04832_dclk_recalc_rate,
-	.round_rate = lmk04832_dclk_round_rate,
+	.determine_rate = lmk04832_dclk_determine_rate,
 	.set_rate = lmk04832_dclk_set_rate,
 };
 
@@ -1297,6 +1312,7 @@ static int lmk04832_register_clkout(struct lmk04832 *lmk, const int num)
 		sprintf(dclk_name, "lmk-dclk%02d_%02d", num, num + 1);
 		init.name = dclk_name;
 		parent_names[0] = clk_hw_get_name(&lmk->vco);
+		init.parent_names = parent_names;
 		init.ops = &lmk04832_dclk_ops;
 		init.flags = CLK_SET_RATE_PARENT;
 		init.num_parents = 1;
@@ -1345,6 +1361,10 @@ static int lmk04832_set_spi_rdbk(const struct lmk04832 *lmk, const int rdbk_pin)
 {
 	int reg;
 	int ret;
+	int val = FIELD_PREP(LMK04832_BIT_CLKIN_SEL_MUX,
+			     LMK04832_VAL_CLKIN_SEL_MUX_SPI_RDBK) |
+		  FIELD_PREP(LMK04832_BIT_CLKIN_SEL_TYPE,
+			     LMK04832_VAL_CLKIN_SEL_TYPE_OUT);
 
 	dev_info(lmk->dev, "setting up 4-wire mode\n");
 	ret = regmap_write(lmk->regmap, LMK04832_REG_RST3W,
@@ -1362,15 +1382,18 @@ static int lmk04832_set_spi_rdbk(const struct lmk04832 *lmk, const int rdbk_pin)
 	case RDBK_RESET:
 		reg = LMK04832_REG_CLKIN_RST;
 		break;
+	case RDBK_PLL1_LD:
+		reg = LMK04832_REG_PLL1_LD;
+		val = FIELD_PREP(LMK04832_BIT_PLL1_LD_MUX,
+				 LMK04832_VAL_PLL1_LD_MUX_SPI_RDBK) |
+		      FIELD_PREP(LMK04832_BIT_PLL1_LD_TYPE,
+				 LMK04832_VAL_PLL1_LD_TYPE_OUT_PP);
+		break;
 	default:
 		return -EINVAL;
 	}
 
-	return regmap_write(lmk->regmap, reg,
-			    FIELD_PREP(LMK04832_BIT_CLKIN_SEL_MUX,
-				       LMK04832_VAL_CLKIN_SEL_MUX_SPI_RDBK) |
-			    FIELD_PREP(LMK04832_BIT_CLKIN_SEL_TYPE,
-				       LMK04832_VAL_CLKIN_SEL_TYPE_OUT));
+	return regmap_write(lmk->regmap, reg, val);
 }
 
 static int lmk04832_probe(struct spi_device *spi)
@@ -1391,16 +1414,12 @@ static int lmk04832_probe(struct spi_device *spi)
 
 	lmk->dev = &spi->dev;
 
-	lmk->oscin = devm_clk_get(lmk->dev, "oscin");
+	lmk->oscin = devm_clk_get_enabled(lmk->dev, "oscin");
 	if (IS_ERR(lmk->oscin)) {
 		dev_err(lmk->dev, "failed to get oscin clock\n");
 		return PTR_ERR(lmk->oscin);
 	}
 
-	ret = clk_prepare_enable(lmk->oscin);
-	if (ret)
-		return ret;
-
 	lmk->reset_gpio = devm_gpiod_get_optional(&spi->dev, "reset",
 						  GPIOD_OUT_LOW);
 
@@ -1408,14 +1427,14 @@ static int lmk04832_probe(struct spi_device *spi)
 				 sizeof(struct lmk_dclk), GFP_KERNEL);
 	if (!lmk->dclk) {
 		ret = -ENOMEM;
-		goto err_disable_oscin;
+		return ret;
 	}
 
 	lmk->clkout = devm_kcalloc(lmk->dev, info->num_channels,
 				   sizeof(*lmk->clkout), GFP_KERNEL);
 	if (!lmk->clkout) {
 		ret = -ENOMEM;
-		goto err_disable_oscin;
+		return ret;
 	}
 
 	lmk->clk_data = devm_kzalloc(lmk->dev, struct_size(lmk->clk_data, hws,
@@ -1423,7 +1442,7 @@ static int lmk04832_probe(struct spi_device *spi)
 				     GFP_KERNEL);
 	if (!lmk->clk_data) {
 		ret = -ENOMEM;
-		goto err_disable_oscin;
+		return ret;
 	}
 
 	device_property_read_u32(lmk->dev, "ti,vco-hz", &lmk->vco_rate);
@@ -1451,7 +1470,7 @@ static int lmk04832_probe(struct spi_device *spi)
 			dev_err(lmk->dev, "missing reg property in child: %s\n",
 				child->full_name);
 			of_node_put(child);
-			goto err_disable_oscin;
+			return ret;
 		}
 
 		of_property_read_u32(child, "ti,clkout-fmt",
@@ -1472,7 +1491,7 @@ static int lmk04832_probe(struct spi_device *spi)
 
 			__func__, PTR_ERR(lmk->regmap));
 		ret = PTR_ERR(lmk->regmap);
-		goto err_disable_oscin;
+		return ret;
 	}
 
 	regmap_write(lmk->regmap, LMK04832_REG_RST3W, LMK04832_BIT_RESET);
@@ -1482,7 +1501,7 @@ static int lmk04832_probe(struct spi_device *spi)
 					 &rdbk_pin);
 		ret = lmk04832_set_spi_rdbk(lmk, rdbk_pin);
 		if (ret)
-			goto err_disable_oscin;
+			return ret;
 	}
 
 	regmap_bulk_read(lmk->regmap, LMK04832_REG_ID_PROD_MSB, &tmp, 3);
@@ -1490,13 +1509,13 @@ static int lmk04832_probe(struct spi_device *spi)
 		dev_err(lmk->dev, "unsupported device type: pid 0x%04x, maskrev 0x%02x\n",
 			tmp[0] << 8 | tmp[1], tmp[2]);
 		ret = -EINVAL;
-		goto err_disable_oscin;
+		return ret;
 	}
 
 	ret = lmk04832_register_vco(lmk);
 	if (ret) {
 		dev_err(lmk->dev, "failed to init device clock path\n");
-		goto err_disable_oscin;
+		return ret;
 	}
 
 	if (lmk->vco_rate) {
@@ -1504,21 +1523,21 @@ static int lmk04832_probe(struct spi_device *spi)
 		ret = clk_set_rate(lmk->vco.clk, lmk->vco_rate);
 		if (ret) {
 			dev_err(lmk->dev, "failed to set VCO rate\n");
-			goto err_disable_vco;
+			return ret;
 		}
 	}
 
 	ret = lmk04832_register_sclk(lmk);
 	if (ret) {
 		dev_err(lmk->dev, "failed to init SYNC/SYSREF clock path\n");
-		goto err_disable_vco;
+		return ret;
 	}
 
 	for (i = 0; i < info->num_channels; i++) {
 		ret = lmk04832_register_clkout(lmk, i);
 		if (ret) {
 			dev_err(lmk->dev, "failed to register clk %d\n", i);
-			goto err_disable_vco;
+			return ret;
 		}
 	}
 
@@ -1527,27 +1546,12 @@ static int lmk04832_probe(struct spi_device *spi)
 					  lmk->clk_data);
 	if (ret) {
 		dev_err(lmk->dev, "failed to add provider (%d)\n", ret);
-		goto err_disable_vco;
+		return ret;
 	}
 
 	spi_set_drvdata(spi, lmk);
 
 	return 0;
-
-err_disable_vco:
-	clk_disable_unprepare(lmk->vco.clk);
-
-err_disable_oscin:
-	clk_disable_unprepare(lmk->oscin);
-
-	return ret;
-}
-
-static void lmk04832_remove(struct spi_device *spi)
-{
-	struct lmk04832 *lmk = spi_get_drvdata(spi);
-
-	clk_disable_unprepare(lmk->oscin);
 }
 
 static const struct spi_device_id lmk04832_id[] = {
@@ -1568,7 +1572,6 @@ static struct spi_driver lmk04832_driver = {
 		.of_match_table = lmk04832_of_id,
 	},
 	.probe		= lmk04832_probe,
-	.remove		= lmk04832_remove,
 	.id_table	= lmk04832_id,
 };
 module_spi_driver(lmk04832_driver);