[PATCH v3 1/2] phy-sun4i-usb: Use of_match_node to get model specific config data

[hdegoede@redhat.com (Hans de Goede)]

Use of_match_node instead of calling of_device_is_compatible a ton of
times to get model specific config data.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
Changes in v3:
-New patch in v3 of this patch-set
---
 drivers/phy/phy-sun4i-usb.c | 130 +++++++++++++++++++++++++++++---------------
 1 file changed, 85 insertions(+), 45 deletions(-)

diff --git a/drivers/phy/phy-sun4i-usb.c b/drivers/phy/phy-sun4i-usb.c
index b12964b..1d8f85d 100644
--- a/drivers/phy/phy-sun4i-usb.c
+++ b/drivers/phy/phy-sun4i-usb.c
@@ -88,12 +88,22 @@
 #define DEBOUNCE_TIME			msecs_to_jiffies(50)
 #define POLL_TIME			msecs_to_jiffies(250)
 
+enum sun4i_usb_phy_type {
+	sun4i_a10_phy,
+	sun8i_a33_phy,
+};
+
+struct sun4i_usb_phy_cfg {
+	int num_phys;
+	u32 disc_thresh;
+	enum sun4i_usb_phy_type type;
+	bool dedicated_clocks;
+};
+
 struct sun4i_usb_phy_data {
 	void __iomem *base;
+	const struct sun4i_usb_phy_cfg *cfg;
 	struct mutex mutex;
-	int num_phys;
-	u32 disc_thresh;
-	bool has_a33_phyctl;
 	struct sun4i_usb_phy {
 		struct phy *phy;
 		void __iomem *pmu;
@@ -164,12 +174,15 @@ static void sun4i_usb_phy_write(struct sun4i_usb_phy *phy, u32 addr, u32 data,
 
 	mutex_lock(&phy_data->mutex);
 
-	if (phy_data->has_a33_phyctl) {
+	switch (phy_data->cfg->type) {
+	case sun4i_a10_phy:
+		phyctl = phy_data->base + REG_PHYCTL_A10;
+		break;
+	case sun8i_a33_phy:
 		phyctl = phy_data->base + REG_PHYCTL_A33;
 		/* A33 needs us to set phyctl to 0 explicitly */
 		writel(0, phyctl);
-	} else {
-		phyctl = phy_data->base + REG_PHYCTL_A10;
+		break;
 	}
 
 	for (i = 0; i < len; i++) {
@@ -249,7 +262,8 @@ static int sun4i_usb_phy_init(struct phy *_phy)
 	sun4i_usb_phy_write(phy, PHY_TX_AMPLITUDE_TUNE, 0x14, 5);
 
 	/* Disconnect threshold adjustment */
-	sun4i_usb_phy_write(phy, PHY_DISCON_TH_SEL, data->disc_thresh, 2);
+	sun4i_usb_phy_write(phy, PHY_DISCON_TH_SEL,
+			    data->cfg->disc_thresh, 2);
 
 	sun4i_usb_phy_passby(phy, 1);
 
@@ -476,7 +490,7 @@ static struct phy *sun4i_usb_phy_xlate(struct device *dev,
 {
 	struct sun4i_usb_phy_data *data = dev_get_drvdata(dev);
 
-	if (args->args[0] >= data->num_phys)
+	if (args->args[0] >= data->cfg->num_phys)
 		return ERR_PTR(-ENODEV);
 
 	return data->phys[args->args[0]].phy;
@@ -499,6 +513,59 @@ static int sun4i_usb_phy_remove(struct platform_device *pdev)
 	return 0;
 }
 
+static const struct sun4i_usb_phy_cfg sun4i_a10_cfg = {
+	.num_phys = 3,
+	.disc_thresh = 3,
+	.type = sun4i_a10_phy,
+	.dedicated_clocks = false,
+};
+
+static const struct sun4i_usb_phy_cfg sun5i_a13_cfg = {
+	.num_phys = 2,
+	.disc_thresh = 2,
+	.type = sun4i_a10_phy,
+	.dedicated_clocks = false,
+};
+
+static const struct sun4i_usb_phy_cfg sun6i_a31_cfg = {
+	.num_phys = 3,
+	.disc_thresh = 3,
+	.type = sun4i_a10_phy,
+	.dedicated_clocks = true,
+};
+
+static const struct sun4i_usb_phy_cfg sun7i_a20_cfg = {
+	.num_phys = 3,
+	.disc_thresh = 2,
+	.type = sun4i_a10_phy,
+	.dedicated_clocks = false,
+};
+
+static const struct sun4i_usb_phy_cfg sun8i_a23_cfg = {
+	.num_phys = 2,
+	.disc_thresh = 3,
+	.type = sun4i_a10_phy,
+	.dedicated_clocks = true,
+};
+
+static const struct sun4i_usb_phy_cfg sun8i_a33_cfg = {
+	.num_phys = 2,
+	.disc_thresh = 3,
+	.type = sun8i_a33_phy,
+	.dedicated_clocks = true,
+};
+
+static const struct of_device_id sun4i_usb_phy_of_match[] = {
+	{ .compatible = "allwinner,sun4i-a10-usb-phy", .data = &sun4i_a10_cfg },
+	{ .compatible = "allwinner,sun5i-a13-usb-phy", .data = &sun5i_a13_cfg },
+	{ .compatible = "allwinner,sun6i-a31-usb-phy", .data = &sun6i_a31_cfg },
+	{ .compatible = "allwinner,sun7i-a20-usb-phy", .data = &sun7i_a20_cfg },
+	{ .compatible = "allwinner,sun8i-a23-usb-phy", .data = &sun8i_a23_cfg },
+	{ .compatible = "allwinner,sun8i-a33-usb-phy", .data = &sun8i_a33_cfg },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, sun4i_usb_phy_of_match);
+
 static const unsigned int sun4i_usb_phy0_cable[] = {
 	EXTCON_USB,
 	EXTCON_USB_HOST,
@@ -511,10 +578,16 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	struct device_node *np = dev->of_node;
 	struct phy_provider *phy_provider;
-	bool dedicated_clocks;
+	const struct of_device_id *match;
 	struct resource *res;
 	int i, ret;
 
+	match = of_match_node(sun4i_usb_phy_of_match, dev->of_node);
+	if (!match) {
+		dev_err(dev, "of_match_node() failed\n");
+		return -EINVAL;
+	}
+
 	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
 	if (!data)
 		return -ENOMEM;
@@ -522,29 +595,7 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev)
 	mutex_init(&data->mutex);
 	INIT_DELAYED_WORK(&data->detect, sun4i_usb_phy0_id_vbus_det_scan);
 	dev_set_drvdata(dev, data);
-
-	if (of_device_is_compatible(np, "allwinner,sun5i-a13-usb-phy") ||
-	    of_device_is_compatible(np, "allwinner,sun8i-a23-usb-phy") ||
-	    of_device_is_compatible(np, "allwinner,sun8i-a33-usb-phy"))
-		data->num_phys = 2;
-	else
-		data->num_phys = 3;
-
-	if (of_device_is_compatible(np, "allwinner,sun5i-a13-usb-phy") ||
-	    of_device_is_compatible(np, "allwinner,sun7i-a20-usb-phy"))
-		data->disc_thresh = 2;
-	else
-		data->disc_thresh = 3;
-
-	if (of_device_is_compatible(np, "allwinner,sun6i-a31-usb-phy") ||
-	    of_device_is_compatible(np, "allwinner,sun8i-a23-usb-phy") ||
-	    of_device_is_compatible(np, "allwinner,sun8i-a33-usb-phy"))
-		dedicated_clocks = true;
-	else
-		dedicated_clocks = false;
-
-	if (of_device_is_compatible(np, "allwinner,sun8i-a33-usb-phy"))
-		data->has_a33_phyctl = true;
+	data->cfg = match->data;
 
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phy_ctrl");
 	data->base = devm_ioremap_resource(dev, res);
@@ -590,7 +641,7 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev)
 		}
 	}
 
-	for (i = 0; i < data->num_phys; i++) {
+	for (i = 0; i < data->cfg->num_phys; i++) {
 		struct sun4i_usb_phy *phy = data->phys + i;
 		char name[16];
 
@@ -602,7 +653,7 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev)
 			phy->vbus = NULL;
 		}
 
-		if (dedicated_clocks)
+		if (data->cfg->dedicated_clocks)
 			snprintf(name, sizeof(name), "usb%d_phy", i);
 		else
 			strlcpy(name, "usb_phy", sizeof(name));
@@ -689,17 +740,6 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static const struct of_device_id sun4i_usb_phy_of_match[] = {
-	{ .compatible = "allwinner,sun4i-a10-usb-phy" },
-	{ .compatible = "allwinner,sun5i-a13-usb-phy" },
-	{ .compatible = "allwinner,sun6i-a31-usb-phy" },
-	{ .compatible = "allwinner,sun7i-a20-usb-phy" },
-	{ .compatible = "allwinner,sun8i-a23-usb-phy" },
-	{ .compatible = "allwinner,sun8i-a33-usb-phy" },
-	{ },
-};
-MODULE_DEVICE_TABLE(of, sun4i_usb_phy_of_match);
-
 static struct platform_driver sun4i_usb_phy_driver = {
 	.probe	= sun4i_usb_phy_probe,
 	.remove	= sun4i_usb_phy_remove,
-- 
2.5.0