clk: lmk04832: Use devm_clk_get_enabled() helpers

The devm_clk_get_enabled() helpers:
    - call devm_clk_get()
    - call clk_prepare_enable() and register what is needed in order to
     call clk_disable_unprepare() when needed, as a managed resource.

This simplifies the code and avoids the calls to clk_disable_unprepare().

Signed-off-by: Huan Yang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Stephen Boyd <[email protected]>

Author: Huan Yang

drivers/clk/clk-lmk04832.c

@@ -1405,39 +1405,35 @@ 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);
 
 	lmk->dclk = devm_kcalloc(lmk->dev, info->num_channels >> 1,
 				 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,
 							   info->num_channels),
 				     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);
@@ -1465,7 +1461,7 @@ 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",
@@ -1486,7 +1482,7 @@ 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);
@@ -1496,43 +1492,43 @@ 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);
 	if ((tmp[0] << 8 | tmp[1]) != info->pid || tmp[2] != info->maskrev) {
 		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) {
 		dev_info(lmk->dev, "setting VCO rate to %u Hz\n", lmk->vco_rate);
 		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_oscin;
+			return ret;
 		}
 	}
 
 	ret = lmk04832_register_sclk(lmk);
 	if (ret) {
 		dev_err(lmk->dev, "failed to init SYNC/SYSREF clock path\n");
-		goto err_disable_oscin;
+		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_oscin;
+			return ret;
 		}
 	}
 
@@ -1541,24 +1537,12 @@ 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_oscin;
+		return ret;
 	}
 
 	spi_set_drvdata(spi, lmk);
 
 	return 0;
-
-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[] = {
@@ -1579,7 +1563,6 @@ 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);