Merge tag 'phy-for-4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux-phy into usb-next

Kishon writes:

phy: for 4.17

 *) Add USB PHY driver for MDM6600 on Droid
 *) Add USB PHY driver for STM32 USB PHY Controller
 *) Add inno-usb2-phy driver for hi3798cv200 SoC
 *) Add combo phy driver (SATA/USB/PCIE) for HiSilicon STB SoCs
 *) Add USB3 PHY driver for Meson GXL and GXM
 *) Add support for R8A77965 Gen3 USB 2.0 PHY in phy-rcar-gen3-usb2 driver
 *) Add support for qualcomm QUSB2 V2 and QMP V3 USB3 PHY in phy-qcom-qusb2
    and phy-qcom-qmp PHY driver respectively
 *) Add support for runtime PM in phy-qcom-qusb2 and phy-qcom-qmp PHY drivers
 *) Add support for Allwinner R40 USB PHY in sun4i-usb PHY driver
 *) Add support in rockchip-typec PHY driver to make extcon optional and
    fallback to working in host mode if extcon is missing
 *) Add support in rockchip-typec PHY driver to mux PHYs connected to DP
 *) Add support to configure slew rate parameters in phy-mtk-tphy PHY driver
 *) Add workaround for missing Vbus det interrupts on Allwinner A23/A33
 *) Add USB speed related PHY modes in phy core
 *) Fix PHY 'structure' documentation
 *) Force rockchip-typec PHY to USB2 if DP-only mode is used
 *) Fix phy-qcom-qusb2 and phy-qcom-qmp PHY drivers to follow PHY reset and
    initialization sequence as per hardware programming manual
 *) Fix Marvell BG2CD SoC USB failure in phy-berlin-usb driver
 *) Minor fixes in lpc18xx-usb-otg, xusb-tegra210 and phy-rockchip-emmc PHY
    drivers

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

1 files changed, 107 insertions, 53 deletions

diff --git a/drivers/phy/rockchip/phy-rockchip-typec.c b/drivers/phy/rockchip/phy-rockchip-typec.c
index 7492c8978217..76a4b58ec771 100644
--- a/drivers/phy/rockchip/phy-rockchip-typec.c
+++ b/drivers/phy/rockchip/phy-rockchip-typec.c
@@ -355,11 +355,26 @@ struct usb3phy_reg {
 	u32 write_enable;
 };
 
+/**
+ * struct rockchip_usb3phy_port_cfg: usb3-phy port configuration.
+ * @reg: the base address for usb3-phy config.
+ * @typec_conn_dir: the register of type-c connector direction.
+ * @usb3tousb2_en: the register of type-c force usb2 to usb2 enable.
+ * @external_psm: the register of type-c phy external psm clock.
+ * @pipe_status: the register of type-c phy pipe status.
+ * @usb3_host_disable: the register of type-c usb3 host disable.
+ * @usb3_host_port: the register of type-c usb3 host port.
+ * @uphy_dp_sel: the register of type-c phy DP select control.
+ */
 struct rockchip_usb3phy_port_cfg {
+	unsigned int reg;
 	struct usb3phy_reg typec_conn_dir;
 	struct usb3phy_reg usb3tousb2_en;
 	struct usb3phy_reg external_psm;
 	struct usb3phy_reg pipe_status;
+	struct usb3phy_reg usb3_host_disable;
+	struct usb3phy_reg usb3_host_port;
+	struct usb3phy_reg uphy_dp_sel;
 };
 
 struct rockchip_typec_phy {
@@ -372,7 +387,7 @@ struct rockchip_typec_phy {
 	struct reset_control *uphy_rst;
 	struct reset_control *pipe_rst;
 	struct reset_control *tcphy_rst;
-	struct rockchip_usb3phy_port_cfg port_cfgs;
+	const struct rockchip_usb3phy_port_cfg *port_cfgs;
 	/* mutex to protect access to individual PHYs */
 	struct mutex lock;
 
@@ -424,6 +439,30 @@ struct phy_reg dp_pll_cfg[] = {
 	{ 0x4,		CMN_DIAG_PLL1_INCLK_CTRL },
 };
 
+static const struct rockchip_usb3phy_port_cfg rk3399_usb3phy_port_cfgs[] = {
+	{
+		.reg = 0xff7c0000,
+		.typec_conn_dir	= { 0xe580, 0, 16 },
+		.usb3tousb2_en	= { 0xe580, 3, 19 },
+		.external_psm	= { 0xe588, 14, 30 },
+		.pipe_status	= { 0xe5c0, 0, 0 },
+		.usb3_host_disable = { 0x2434, 0, 16 },
+		.usb3_host_port = { 0x2434, 12, 28 },
+		.uphy_dp_sel	= { 0x6268, 19, 19 },
+	},
+	{
+		.reg = 0xff800000,
+		.typec_conn_dir	= { 0xe58c, 0, 16 },
+		.usb3tousb2_en	= { 0xe58c, 3, 19 },
+		.external_psm	= { 0xe594, 14, 30 },
+		.pipe_status	= { 0xe5c0, 16, 16 },
+		.usb3_host_disable = { 0x2444, 0, 16 },
+		.usb3_host_port = { 0x2444, 12, 28 },
+		.uphy_dp_sel	= { 0x6268, 3, 19 },
+	},
+	{ /* sentinel */ }
+};
+
 static void tcphy_cfg_24m(struct rockchip_typec_phy *tcphy)
 {
 	u32 i, rdata;
@@ -691,7 +730,7 @@ static void tcphy_dp_aux_calibration(struct rockchip_typec_phy *tcphy)
 
 static int tcphy_phy_init(struct rockchip_typec_phy *tcphy, u8 mode)
 {
-	struct rockchip_usb3phy_port_cfg *cfg = &tcphy->port_cfgs;
+	const struct rockchip_usb3phy_port_cfg *cfg = tcphy->port_cfgs;
 	int ret, i;
 	u32 val;
 
@@ -782,6 +821,9 @@ static int tcphy_get_mode(struct rockchip_typec_phy *tcphy)
 	u8 mode;
 	int ret;
 
+	if (!edev)
+		return MODE_DFP_USB;
+
 	ufp = extcon_get_state(edev, EXTCON_USB);
 	dp = extcon_get_state(edev, EXTCON_DISP_DP);
 
@@ -818,10 +860,22 @@ static int tcphy_get_mode(struct rockchip_typec_phy *tcphy)
 	return mode;
 }
 
+static int tcphy_cfg_usb3_to_usb2_only(struct rockchip_typec_phy *tcphy,
+				       bool value)
+{
+	const struct rockchip_usb3phy_port_cfg *cfg = tcphy->port_cfgs;
+
+	property_enable(tcphy, &cfg->usb3tousb2_en, value);
+	property_enable(tcphy, &cfg->usb3_host_disable, value);
+	property_enable(tcphy, &cfg->usb3_host_port, !value);
+
+	return 0;
+}
+
 static int rockchip_usb3_phy_power_on(struct phy *phy)
 {
 	struct rockchip_typec_phy *tcphy = phy_get_drvdata(phy);
-	struct rockchip_usb3phy_port_cfg *cfg = &tcphy->port_cfgs;
+	const struct rockchip_usb3phy_port_cfg *cfg = tcphy->port_cfgs;
 	const struct usb3phy_reg *reg = &cfg->pipe_status;
 	int timeout, new_mode, ret = 0;
 	u32 val;
@@ -835,8 +889,10 @@ static int rockchip_usb3_phy_power_on(struct phy *phy)
 	}
 
 	/* DP-only mode; fall back to USB2 */
-	if (!(new_mode & (MODE_DFP_USB | MODE_UFP_USB)))
+	if (!(new_mode & (MODE_DFP_USB | MODE_UFP_USB))) {
+		tcphy_cfg_usb3_to_usb2_only(tcphy, true);
 		goto unlock_ret;
+	}
 
 	if (tcphy->mode == new_mode)
 		goto unlock_ret;
@@ -852,6 +908,9 @@ static int rockchip_usb3_phy_power_on(struct phy *phy)
 		regmap_read(tcphy->grf_regs, reg->offset, &val);
 		if (!(val & BIT(reg->enable_bit))) {
 			tcphy->mode |= new_mode & (MODE_DFP_USB | MODE_UFP_USB);
+
+			/* enable usb3 host */
+			tcphy_cfg_usb3_to_usb2_only(tcphy, false);
 			goto unlock_ret;
 		}
 		usleep_range(10, 20);
@@ -872,6 +931,7 @@ static int rockchip_usb3_phy_power_off(struct phy *phy)
 	struct rockchip_typec_phy *tcphy = phy_get_drvdata(phy);
 
 	mutex_lock(&tcphy->lock);
+	tcphy_cfg_usb3_to_usb2_only(tcphy, false);
 
 	if (tcphy->mode == MODE_DISCONNECT)
 		goto unlock;
@@ -894,6 +954,7 @@ static const struct phy_ops rockchip_usb3_phy_ops = {
 static int rockchip_dp_phy_power_on(struct phy *phy)
 {
 	struct rockchip_typec_phy *tcphy = phy_get_drvdata(phy);
+	const struct rockchip_usb3phy_port_cfg *cfg = tcphy->port_cfgs;
 	int new_mode, ret = 0;
 	u32 val;
 
@@ -926,6 +987,8 @@ static int rockchip_dp_phy_power_on(struct phy *phy)
 	if (ret)
 		goto unlock_ret;
 
+	property_enable(tcphy, &cfg->uphy_dp_sel, 1);
+
 	ret = readx_poll_timeout(readl, tcphy->base + DP_MODE_CTL,
 				 val, val & DP_MODE_A2, 1000,
 				 PHY_MODE_SET_TIMEOUT);
@@ -984,51 +1047,9 @@ static const struct phy_ops rockchip_dp_phy_ops = {
 	.owner		= THIS_MODULE,
 };
 
-static int tcphy_get_param(struct device *dev,
-			   struct usb3phy_reg *reg,
-			   const char *name)
-{
-	u32 buffer[3];
-	int ret;
-
-	ret = of_property_read_u32_array(dev->of_node, name, buffer, 3);
-	if (ret) {
-		dev_err(dev, "Can not parse %s\n", name);
-		return ret;
-	}
-
-	reg->offset = buffer[0];
-	reg->enable_bit = buffer[1];
-	reg->write_enable = buffer[2];
-	return 0;
-}
-
 static int tcphy_parse_dt(struct rockchip_typec_phy *tcphy,
 			  struct device *dev)
 {
-	struct rockchip_usb3phy_port_cfg *cfg = &tcphy->port_cfgs;
-	int ret;
-
-	ret = tcphy_get_param(dev, &cfg->typec_conn_dir,
-			      "rockchip,typec-conn-dir");
-	if (ret)
-		return ret;
-
-	ret = tcphy_get_param(dev, &cfg->usb3tousb2_en,
-			      "rockchip,usb3tousb2-en");
-	if (ret)
-		return ret;
-
-	ret = tcphy_get_param(dev, &cfg->external_psm,
-			      "rockchip,external-psm");
-	if (ret)
-		return ret;
-
-	ret = tcphy_get_param(dev, &cfg->pipe_status,
-			      "rockchip,pipe-status");
-	if (ret)
-		return ret;
-
 	tcphy->grf_regs = syscon_regmap_lookup_by_phandle(dev->of_node,
 							  "rockchip,grf");
 	if (IS_ERR(tcphy->grf_regs)) {
@@ -1071,7 +1092,7 @@ static int tcphy_parse_dt(struct rockchip_typec_phy *tcphy,
 
 static void typec_phy_pre_init(struct rockchip_typec_phy *tcphy)
 {
-	struct rockchip_usb3phy_port_cfg *cfg = &tcphy->port_cfgs;
+	const struct rockchip_usb3phy_port_cfg *cfg = tcphy->port_cfgs;
 
 	reset_control_assert(tcphy->tcphy_rst);
 	reset_control_assert(tcphy->uphy_rst);
@@ -1092,17 +1113,43 @@ static int rockchip_typec_phy_probe(struct platform_device *pdev)
 	struct rockchip_typec_phy *tcphy;
 	struct phy_provider *phy_provider;
 	struct resource *res;
-	int ret;
+	const struct rockchip_usb3phy_port_cfg *phy_cfgs;
+	const struct of_device_id *match;
+	int index, ret;
 
 	tcphy = devm_kzalloc(dev, sizeof(*tcphy), GFP_KERNEL);
 	if (!tcphy)
 		return -ENOMEM;
 
+	match = of_match_device(dev->driver->of_match_table, dev);
+	if (!match || !match->data) {
+		dev_err(dev, "phy configs are not assigned!\n");
+		return -EINVAL;
+	}
+
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	tcphy->base = devm_ioremap_resource(dev, res);
 	if (IS_ERR(tcphy->base))
 		return PTR_ERR(tcphy->base);
 
+	phy_cfgs = match->data;
+	/* find out a proper config which can be matched with dt. */
+	index = 0;
+	while (phy_cfgs[index].reg) {
+		if (phy_cfgs[index].reg == res->start) {
+			tcphy->port_cfgs = &phy_cfgs[index];
+			break;
+		}
+
+		++index;
+	}
+
+	if (!tcphy->port_cfgs) {
+		dev_err(dev, "no phy-config can be matched with %s node\n",
+			np->name);
+		return -EINVAL;
+	}
+
 	ret = tcphy_parse_dt(tcphy, dev);
 	if (ret)
 		return ret;
@@ -1115,9 +1162,13 @@ static int rockchip_typec_phy_probe(struct platform_device *pdev)
 
 	tcphy->extcon = extcon_get_edev_by_phandle(dev, 0);
 	if (IS_ERR(tcphy->extcon)) {
-		if (PTR_ERR(tcphy->extcon) != -EPROBE_DEFER)
-			dev_err(dev, "Invalid or missing extcon\n");
-		return PTR_ERR(tcphy->extcon);
+		if (PTR_ERR(tcphy->extcon) == -ENODEV) {
+			tcphy->extcon = NULL;
+		} else {
+			if (PTR_ERR(tcphy->extcon) != -EPROBE_DEFER)
+				dev_err(dev, "Invalid or missing extcon\n");
+			return PTR_ERR(tcphy->extcon);
+		}
 	}
 
 	pm_runtime_enable(dev);
@@ -1162,8 +1213,11 @@ static int rockchip_typec_phy_remove(struct platform_device *pdev)
 }
 
 static const struct of_device_id rockchip_typec_phy_dt_ids[] = {
-	{ .compatible = "rockchip,rk3399-typec-phy" },
-	{}
+	{
+		.compatible = "rockchip,rk3399-typec-phy",
+		.data = &rk3399_usb3phy_port_cfgs
+	},
+	{ /* sentinel */ }
 };
 
 MODULE_DEVICE_TABLE(of, rockchip_typec_phy_dt_ids);