X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=drivers%2Fphy%2Fphy-rockchip-usb.c;h=33a80eba1cb44836ebc74e6ddeefb5269b76dd30;hb=01e482c2d7ce4c13a11f577f6bc656f566b96d07;hp=91d6f342c56596fc2e3fcff18213dba004546c3e;hpb=be9e2f775f5a3147205c552534c3abf0f9374a13;p=firefly-linux-kernel-4.4.55.git

diff --git a/drivers/phy/phy-rockchip-usb.c b/drivers/phy/phy-rockchip-usb.c
index 91d6f342c565..33a80eba1cb4 100644
--- a/drivers/phy/phy-rockchip-usb.c
+++ b/drivers/phy/phy-rockchip-usb.c
@@ -15,12 +15,14 @@
  */
 
 #include <linux/clk.h>
+#include <linux/clk-provider.h>
 #include <linux/io.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/mutex.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
+#include <linux/of_platform.h>
 #include <linux/phy/phy.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/consumer.h>
@@ -36,105 +38,271 @@
 #define SIDDQ_ON		BIT(13)
 #define SIDDQ_OFF		(0 << 13)
 
+struct rockchip_usb_phys {
+	int reg;
+	const char *pll_name;
+};
+
+struct rockchip_usb_phy_pdata {
+	struct rockchip_usb_phys *phys;
+};
+
+struct rockchip_usb_phy_base {
+	struct device *dev;
+	struct regmap *reg_base;
+	const struct rockchip_usb_phy_pdata *pdata;
+};
+
 struct rockchip_usb_phy {
+	struct rockchip_usb_phy_base *base;
+	struct device_node *np;
 	unsigned int	reg_offset;
-	struct regmap	*reg_base;
 	struct clk	*clk;
+	struct clk      *clk480m;
+	struct clk_hw	clk480m_hw;
 	struct phy	*phy;
 };
 
 static int rockchip_usb_phy_power(struct rockchip_usb_phy *phy,
 					   bool siddq)
 {
-	return regmap_write(phy->reg_base, phy->reg_offset,
+	return regmap_write(phy->base->reg_base, phy->reg_offset,
 			    SIDDQ_WRITE_ENA | (siddq ? SIDDQ_ON : SIDDQ_OFF));
 }
 
-static int rockchip_usb_phy_power_off(struct phy *_phy)
+static unsigned long rockchip_usb_phy480m_recalc_rate(struct clk_hw *hw,
+						unsigned long parent_rate)
 {
-	struct rockchip_usb_phy *phy = phy_get_drvdata(_phy);
-	int ret = 0;
+	return 480000000;
+}
+
+static void rockchip_usb_phy480m_disable(struct clk_hw *hw)
+{
+	struct rockchip_usb_phy *phy = container_of(hw,
+						    struct rockchip_usb_phy,
+						    clk480m_hw);
 
 	/* Power down usb phy analog blocks by set siddq 1 */
-	ret = rockchip_usb_phy_power(phy, 1);
-	if (ret)
-		return ret;
+	rockchip_usb_phy_power(phy, 1);
+}
 
-	clk_disable_unprepare(phy->clk);
+static int rockchip_usb_phy480m_enable(struct clk_hw *hw)
+{
+	struct rockchip_usb_phy *phy = container_of(hw,
+						    struct rockchip_usb_phy,
+						    clk480m_hw);
 
-	return 0;
+	/* Power up usb phy analog blocks by set siddq 0 */
+	return rockchip_usb_phy_power(phy, 0);
 }
 
-static int rockchip_usb_phy_power_on(struct phy *_phy)
+static int rockchip_usb_phy480m_is_enabled(struct clk_hw *hw)
 {
-	struct rockchip_usb_phy *phy = phy_get_drvdata(_phy);
-	int ret = 0;
+	struct rockchip_usb_phy *phy = container_of(hw,
+						    struct rockchip_usb_phy,
+						    clk480m_hw);
+	int ret;
+	u32 val;
 
-	ret = clk_prepare_enable(phy->clk);
-	if (ret)
+	ret = regmap_read(phy->base->reg_base, phy->reg_offset, &val);
+	if (ret < 0)
 		return ret;
 
-	/* Power up usb phy analog blocks by set siddq 0 */
-	ret = rockchip_usb_phy_power(phy, 0);
-	if (ret) {
-		clk_disable_unprepare(phy->clk);
-		return ret;
-	}
+	return (val & SIDDQ_ON) ? 0 : 1;
+}
+
+static const struct clk_ops rockchip_usb_phy480m_ops = {
+	.enable = rockchip_usb_phy480m_enable,
+	.disable = rockchip_usb_phy480m_disable,
+	.is_enabled = rockchip_usb_phy480m_is_enabled,
+	.recalc_rate = rockchip_usb_phy480m_recalc_rate,
+};
+
+static int rockchip_usb_phy_power_off(struct phy *_phy)
+{
+	struct rockchip_usb_phy *phy = phy_get_drvdata(_phy);
+
+	clk_disable_unprepare(phy->clk480m);
 
 	return 0;
 }
 
+static int rockchip_usb_phy_power_on(struct phy *_phy)
+{
+	struct rockchip_usb_phy *phy = phy_get_drvdata(_phy);
+
+	return clk_prepare_enable(phy->clk480m);
+}
+
 static const struct phy_ops ops = {
 	.power_on	= rockchip_usb_phy_power_on,
 	.power_off	= rockchip_usb_phy_power_off,
 	.owner		= THIS_MODULE,
 };
 
-static int rockchip_usb_phy_probe(struct platform_device *pdev)
+static void rockchip_usb_phy_action(void *data)
+{
+	struct rockchip_usb_phy *rk_phy = data;
+
+	of_clk_del_provider(rk_phy->np);
+	clk_unregister(rk_phy->clk480m);
+
+	if (rk_phy->clk)
+		clk_put(rk_phy->clk);
+}
+
+static int rockchip_usb_phy_init(struct rockchip_usb_phy_base *base,
+				 struct device_node *child)
 {
-	struct device *dev = &pdev->dev;
 	struct rockchip_usb_phy *rk_phy;
-	struct phy_provider *phy_provider;
-	struct device_node *child;
-	struct regmap *grf;
 	unsigned int reg_offset;
-	int err;
+	const char *clk_name;
+	struct clk_init_data init;
+	int err, i;
 
-	grf = syscon_regmap_lookup_by_phandle(dev->of_node, "rockchip,grf");
-	if (IS_ERR(grf)) {
-		dev_err(&pdev->dev, "Missing rockchip,grf property\n");
-		return PTR_ERR(grf);
+	rk_phy = devm_kzalloc(base->dev, sizeof(*rk_phy), GFP_KERNEL);
+	if (!rk_phy)
+		return -ENOMEM;
+
+	rk_phy->base = base;
+	rk_phy->np = child;
+
+	if (of_property_read_u32(child, "reg", &reg_offset)) {
+		dev_err(base->dev, "missing reg property in node %s\n",
+			child->name);
+		return -EINVAL;
 	}
 
-	for_each_available_child_of_node(dev->of_node, child) {
-		rk_phy = devm_kzalloc(dev, sizeof(*rk_phy), GFP_KERNEL);
-		if (!rk_phy)
-			return -ENOMEM;
-
-		if (of_property_read_u32(child, "reg", &reg_offset)) {
-			dev_err(dev, "missing reg property in node %s\n",
-				child->name);
-			return -EINVAL;
+	rk_phy->reg_offset = reg_offset;
+
+	rk_phy->clk = of_clk_get_by_name(child, "phyclk");
+	if (IS_ERR(rk_phy->clk))
+		rk_phy->clk = NULL;
+
+	i = 0;
+	init.name = NULL;
+	while (base->pdata->phys[i].reg) {
+		if (base->pdata->phys[i].reg == reg_offset) {
+			init.name = base->pdata->phys[i].pll_name;
+			break;
 		}
+		i++;
+	}
 
-		rk_phy->reg_offset = reg_offset;
-		rk_phy->reg_base = grf;
+	if (!init.name) {
+		dev_err(base->dev, "phy data not found\n");
+		return -EINVAL;
+	}
 
-		rk_phy->clk = of_clk_get_by_name(child, "phyclk");
-		if (IS_ERR(rk_phy->clk))
-			rk_phy->clk = NULL;
+	if (rk_phy->clk) {
+		clk_name = __clk_get_name(rk_phy->clk);
+		init.flags = 0;
+		init.parent_names = &clk_name;
+		init.num_parents = 1;
+	} else {
+		init.flags = CLK_IS_ROOT;
+		init.parent_names = NULL;
+		init.num_parents = 0;
+	}
 
-		rk_phy->phy = devm_phy_create(dev, child, &ops);
-		if (IS_ERR(rk_phy->phy)) {
-			dev_err(dev, "failed to create PHY\n");
-			return PTR_ERR(rk_phy->phy);
-		}
-		phy_set_drvdata(rk_phy->phy, rk_phy);
+	init.ops = &rockchip_usb_phy480m_ops;
+	rk_phy->clk480m_hw.init = &init;
+
+	rk_phy->clk480m = clk_register(base->dev, &rk_phy->clk480m_hw);
+	if (IS_ERR(rk_phy->clk480m)) {
+		err = PTR_ERR(rk_phy->clk480m);
+		goto err_clk;
+	}
+
+	err = of_clk_add_provider(child, of_clk_src_simple_get,
+				  rk_phy->clk480m);
+	if (err < 0)
+		goto err_clk_prov;
+
+	err = devm_add_action(base->dev, rockchip_usb_phy_action, rk_phy);
+	if (err)
+		goto err_devm_action;
+
+	rk_phy->phy = devm_phy_create(base->dev, child, &ops);
+	if (IS_ERR(rk_phy->phy)) {
+		dev_err(base->dev, "failed to create PHY\n");
+		return PTR_ERR(rk_phy->phy);
+	}
+	phy_set_drvdata(rk_phy->phy, rk_phy);
+
+	/* only power up usb phy when it use, so disable it when init*/
+	return rockchip_usb_phy_power(rk_phy, 1);
+
+err_devm_action:
+	of_clk_del_provider(child);
+err_clk_prov:
+	clk_unregister(rk_phy->clk480m);
+err_clk:
+	if (rk_phy->clk)
+		clk_put(rk_phy->clk);
+	return err;
+}
+
+static const struct rockchip_usb_phy_pdata rk3066a_pdata = {
+	.phys = (struct rockchip_usb_phys[]){
+		{ .reg = 0x17c, .pll_name = "sclk_otgphy0_480m" },
+		{ .reg = 0x188, .pll_name = "sclk_otgphy1_480m" },
+		{ /* sentinel */ }
+	},
+};
 
-		/* only power up usb phy when it use, so disable it when init*/
-		err = rockchip_usb_phy_power(rk_phy, 1);
-		if (err)
+static const struct rockchip_usb_phy_pdata rk3188_pdata = {
+	.phys = (struct rockchip_usb_phys[]){
+		{ .reg = 0x10c, .pll_name = "sclk_otgphy0_480m" },
+		{ .reg = 0x11c, .pll_name = "sclk_otgphy1_480m" },
+		{ /* sentinel */ }
+	},
+};
+
+static const struct rockchip_usb_phy_pdata rk3288_pdata = {
+	.phys = (struct rockchip_usb_phys[]){
+		{ .reg = 0x320, .pll_name = "sclk_otgphy0_480m" },
+		{ .reg = 0x334, .pll_name = "sclk_otgphy1_480m" },
+		{ .reg = 0x348, .pll_name = "sclk_otgphy2_480m" },
+		{ /* sentinel */ }
+	},
+};
+
+static int rockchip_usb_phy_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct rockchip_usb_phy_base *phy_base;
+	struct phy_provider *phy_provider;
+	const struct of_device_id *match;
+	struct device_node *child;
+	int err;
+
+	phy_base = devm_kzalloc(dev, sizeof(*phy_base), GFP_KERNEL);
+	if (!phy_base)
+		return -ENOMEM;
+
+	match = of_match_device(dev->driver->of_match_table, dev);
+	if (!match || !match->data) {
+		dev_err(dev, "missing phy data\n");
+		return -EINVAL;
+	}
+
+	phy_base->pdata = match->data;
+
+	phy_base->dev = dev;
+	phy_base->reg_base = syscon_regmap_lookup_by_phandle(dev->of_node,
+							     "rockchip,grf");
+	if (IS_ERR(phy_base->reg_base)) {
+		dev_err(&pdev->dev, "Missing rockchip,grf property\n");
+		return PTR_ERR(phy_base->reg_base);
+	}
+
+	for_each_available_child_of_node(dev->of_node, child) {
+		err = rockchip_usb_phy_init(phy_base, child);
+		if (err) {
+			of_node_put(child);
 			return err;
+		}
 	}
 
 	phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
@@ -142,7 +310,9 @@ static int rockchip_usb_phy_probe(struct platform_device *pdev)
 }
 
 static const struct of_device_id rockchip_usb_phy_dt_ids[] = {
-	{ .compatible = "rockchip,rk3288-usb-phy" },
+	{ .compatible = "rockchip,rk3066a-usb-phy", .data = &rk3066a_pdata },
+	{ .compatible = "rockchip,rk3188-usb-phy", .data = &rk3188_pdata },
+	{ .compatible = "rockchip,rk3288-usb-phy", .data = &rk3288_pdata },
 	{}
 };