1 files changed, 58 insertions, 15 deletions

diff --git a/drivers/clk/clk-bd718x7.c b/drivers/clk/clk-bd718x7.c
index 60422c72d142..ac40b669d60b 100644
--- a/drivers/clk/clk-bd718x7.c
+++ b/drivers/clk/clk-bd718x7.c
@@ -7,24 +7,36 @@
 #include <linux/err.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
-#include <linux/mfd/rohm-bd718x7.h>
+#include <linux/mfd/rohm-generic.h>
 #include <linux/clk-provider.h>
 #include <linux/clkdev.h>
 #include <linux/regmap.h>
 
+/* clk control registers */
+/* BD71815 */
+#define BD71815_REG_OUT32K	0x1d
+/* BD71828 */
+#define BD71828_REG_OUT32K	0x4B
+/* BD71837 and BD71847 */
+#define BD718XX_REG_OUT32K	0x2E
+
+/*
+ * BD71837, BD71847, and BD71828 all use bit [0] to clk output control
+ */
+#define CLK_OUT_EN_MASK		BIT(0)
+
+
 struct bd718xx_clk {
 	struct clk_hw hw;
 	u8 reg;
 	u8 mask;
 	struct platform_device *pdev;
-	struct bd718xx *mfd;
+	struct regmap *regmap;
 };
 
-static int bd71837_clk_set(struct clk_hw *hw, int status)
+static int bd71837_clk_set(struct bd718xx_clk *c, unsigned int status)
 {
-	struct bd718xx_clk *c = container_of(hw, struct bd718xx_clk, hw);
-
-	return regmap_update_bits(c->mfd->regmap, c->reg, c->mask, status);
+	return regmap_update_bits(c->regmap, c->reg, c->mask, status);
 }
 
 static void bd71837_clk_disable(struct clk_hw *hw)
@@ -32,14 +44,16 @@ static void bd71837_clk_disable(struct clk_hw *hw)
 	int rv;
 	struct bd718xx_clk *c = container_of(hw, struct bd718xx_clk, hw);
 
-	rv = bd71837_clk_set(hw, 0);
+	rv = bd71837_clk_set(c, 0);
 	if (rv)
 		dev_dbg(&c->pdev->dev, "Failed to disable 32K clk (%d)\n", rv);
 }
 
 static int bd71837_clk_enable(struct clk_hw *hw)
 {
-	return bd71837_clk_set(hw, 1);
+	struct bd718xx_clk *c = container_of(hw, struct bd718xx_clk, hw);
+
+	return bd71837_clk_set(c, 0xffffffff);
 }
 
 static int bd71837_clk_is_enabled(struct clk_hw *hw)
@@ -48,7 +62,7 @@ static int bd71837_clk_is_enabled(struct clk_hw *hw)
 	int rval;
 	struct bd718xx_clk *c = container_of(hw, struct bd718xx_clk, hw);
 
-	rval = regmap_read(c->mfd->regmap, c->reg, &enabled);
+	rval = regmap_read(c->regmap, c->reg, &enabled);
 
 	if (rval)
 		return rval;
@@ -68,16 +82,20 @@ static int bd71837_clk_probe(struct platform_device *pdev)
 	int rval = -ENOMEM;
 	const char *parent_clk;
 	struct device *parent = pdev->dev.parent;
-	struct bd718xx *mfd = dev_get_drvdata(parent);
 	struct clk_init_data init = {
 		.name = "bd718xx-32k-out",
 		.ops = &bd71837_clk_ops,
 	};
+	enum rohm_chip_type chip = platform_get_device_id(pdev)->driver_data;
 
 	c = devm_kzalloc(&pdev->dev, sizeof(*c), GFP_KERNEL);
 	if (!c)
 		return -ENOMEM;
 
+	c->regmap = dev_get_regmap(pdev->dev.parent, NULL);
+	if (!c->regmap)
+		return -ENODEV;
+
 	init.num_parents = 1;
 	parent_clk = of_clk_get_parent_name(parent->of_node, 0);
 
@@ -86,10 +104,24 @@ static int bd71837_clk_probe(struct platform_device *pdev)
 		dev_err(&pdev->dev, "No parent clk found\n");
 		return -EINVAL;
 	}
-
-	c->reg = BD718XX_REG_OUT32K;
-	c->mask = BD718XX_OUT32K_EN;
-	c->mfd = mfd;
+	switch (chip) {
+	case ROHM_CHIP_TYPE_BD71837:
+	case ROHM_CHIP_TYPE_BD71847:
+		c->reg = BD718XX_REG_OUT32K;
+		c->mask = CLK_OUT_EN_MASK;
+		break;
+	case ROHM_CHIP_TYPE_BD71828:
+		c->reg = BD71828_REG_OUT32K;
+		c->mask = CLK_OUT_EN_MASK;
+		break;
+	case ROHM_CHIP_TYPE_BD71815:
+		c->reg = BD71815_REG_OUT32K;
+		c->mask = CLK_OUT_EN_MASK;
+		break;
+	default:
+		dev_err(&pdev->dev, "Unknown clk chip\n");
+		return -EINVAL;
+	}
 	c->pdev = pdev;
 	c->hw.init = &init;
 
@@ -109,15 +141,26 @@ static int bd71837_clk_probe(struct platform_device *pdev)
 	return rval;
 }
 
+static const struct platform_device_id bd718x7_clk_id[] = {
+	{ "bd71837-clk", ROHM_CHIP_TYPE_BD71837 },
+	{ "bd71847-clk", ROHM_CHIP_TYPE_BD71847 },
+	{ "bd71828-clk", ROHM_CHIP_TYPE_BD71828 },
+	{ "bd71815-clk", ROHM_CHIP_TYPE_BD71815 },
+	{ },
+};
+MODULE_DEVICE_TABLE(platform, bd718x7_clk_id);
+
 static struct platform_driver bd71837_clk = {
 	.driver = {
 		.name = "bd718xx-clk",
 	},
 	.probe = bd71837_clk_probe,
+	.id_table = bd718x7_clk_id,
 };
 
 module_platform_driver(bd71837_clk);
 
 MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>");
-MODULE_DESCRIPTION("BD71837 chip clk driver");
+MODULE_DESCRIPTION("BD718(15/18/28/37/47/50) and chip clk driver");
 MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:bd718xx-clk");