Merge tag 'usb-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB/PHY updates from Greg KH:
 "Here is the big set of USB and PHY driver patches for 4.17-rc1.

  Lots of USB typeC work happened this round, with code moving from the
  staging directory into the "real" part of the kernel, as well as new
  infrastructure being added to be able to handle the different types of
  "roles" that typeC requires.

  There is also the normal huge set of USB gadget controller and driver
  updates, along with XHCI changes, and a raft of other tiny fixes all
  over the USB tree. And the PHY driver updates are merged in here as
  well as they interacted with the USB drivers in some places.

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'usb-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (250 commits)
  Revert "USB: serial: ftdi_sio: add Id for Physik Instrumente E-870"
  usb: musb: gadget: misplaced out of bounds check
  usb: chipidea: imx: Fix ULPI on imx53
  usb: chipidea: imx: Cleanup ci_hdrc_imx_platform_flag
  usb: chipidea: usbmisc: small clean up
  usb: chipidea: usbmisc: evdo can be set e/o reset
  usb: chipidea: usbmisc: evdo is only specific to OTG port
  USB: serial: ftdi_sio: add Id for Physik Instrumente E-870
  usb: dwc3: gadget: never call ->complete() from ->ep_queue()
  usb: gadget: udc: core: update usb_ep_queue() documentation
  usb: host: Remove the deprecated ATH79 USB host config options
  usb: roles: Fix return value check in intel_xhci_usb_probe()
  USB: gadget: f_midi: fixing a possible double-free in f_midi
  usb: core: Add USB_QUIRK_DELAY_CTRL_MSG to usbcore quirks
  usb: core: Copy parameter string correctly and remove superfluous null check
  USB: announce bcdDevice as well as idVendor, idProduct.
  USB:fix USB3 devices behind USB3 hubs not resuming at hibernate thaw
  usb: hub: Reduce warning to notice on power loss
  USB: serial: ftdi_sio: add support for Harman FirmwareHubEmulator
  USB: serial: cp210x: add ELDAT Easywave RX09 id
  ...

4 files changed, 352 insertions, 22 deletions

diff --git a/drivers/phy/amlogic/Kconfig b/drivers/phy/amlogic/Kconfig
index cb8f4501652b..23fe1cda2f70 100644
--- a/drivers/phy/amlogic/Kconfig
+++ b/drivers/phy/amlogic/Kconfig
@@ -18,10 +18,21 @@ config PHY_MESON_GXL_USB2
 	default ARCH_MESON
 	depends on OF && (ARCH_MESON || COMPILE_TEST)
 	depends on USB_SUPPORT
-	select USB_COMMON
 	select GENERIC_PHY
 	select REGMAP_MMIO
 	help
 	  Enable this to support the Meson USB2 PHYs found in Meson
 	  GXL and GXM SoCs.
 	  If unsure, say N.
+
+config PHY_MESON_GXL_USB3
+	tristate "Meson GXL and GXM USB3 PHY drivers"
+	default ARCH_MESON
+	depends on OF && (ARCH_MESON || COMPILE_TEST)
+	depends on USB_SUPPORT
+	select GENERIC_PHY
+	select REGMAP_MMIO
+	help
+	  Enable this to support the Meson USB3 PHY and OTG detection
+	  IP block found in Meson GXL and GXM SoCs.
+	  If unsure, say N.
diff --git a/drivers/phy/amlogic/Makefile b/drivers/phy/amlogic/Makefile
index cfdc98715c30..4fd8848c194d 100644
--- a/drivers/phy/amlogic/Makefile
+++ b/drivers/phy/amlogic/Makefile
@@ -1,2 +1,3 @@
 obj-$(CONFIG_PHY_MESON8B_USB2)		+= phy-meson8b-usb2.o
 obj-$(CONFIG_PHY_MESON_GXL_USB2)	+= phy-meson-gxl-usb2.o
+obj-$(CONFIG_PHY_MESON_GXL_USB3)	+= phy-meson-gxl-usb3.o
diff --git a/drivers/phy/amlogic/phy-meson-gxl-usb2.c b/drivers/phy/amlogic/phy-meson-gxl-usb2.c
index e90c4ee25dfe..9f9b5414b97a 100644
--- a/drivers/phy/amlogic/phy-meson-gxl-usb2.c
+++ b/drivers/phy/amlogic/phy-meson-gxl-usb2.c
@@ -11,14 +11,15 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <linux/clk.h>
 #include <linux/delay.h>
 #include <linux/io.h>
 #include <linux/module.h>
 #include <linux/of_device.h>
 #include <linux/regmap.h>
+#include <linux/reset.h>
 #include <linux/phy/phy.h>
 #include <linux/platform_device.h>
-#include <linux/usb/of.h>
 
 /* bits [31:27] are read-only */
 #define U2P_R0							0x0
@@ -70,12 +71,11 @@
 
 /* bits [31:14] are read-only */
 #define U2P_R2							0x8
-	#define U2P_R2_DATA_IN_MASK				GENMASK(3, 0)
-	#define U2P_R2_DATA_IN_EN_MASK				GENMASK(7, 4)
-	#define U2P_R2_ADDR_MASK				GENMASK(11, 8)
-	#define U2P_R2_DATA_OUT_SEL				BIT(12)
-	#define U2P_R2_CLK					BIT(13)
-	#define U2P_R2_DATA_OUT_MASK				GENMASK(17, 14)
+	#define U2P_R2_TESTDATA_IN_MASK				GENMASK(7, 0)
+	#define U2P_R2_TESTADDR_MASK				GENMASK(11, 8)
+	#define U2P_R2_TESTDATA_OUT_SEL				BIT(12)
+	#define U2P_R2_TESTCLK					BIT(13)
+	#define U2P_R2_TESTDATA_OUT_MASK			GENMASK(17, 14)
 	#define U2P_R2_ACA_PIN_RANGE_C				BIT(18)
 	#define U2P_R2_ACA_PIN_RANGE_B				BIT(19)
 	#define U2P_R2_ACA_PIN_RANGE_A				BIT(20)
@@ -99,6 +99,8 @@ struct phy_meson_gxl_usb2_priv {
 	struct regmap		*regmap;
 	enum phy_mode		mode;
 	int			is_enabled;
+	struct clk		*clk;
+	struct reset_control	*reset;
 };
 
 static const struct regmap_config phy_meson_gxl_usb2_regmap_conf = {
@@ -108,6 +110,31 @@ static const struct regmap_config phy_meson_gxl_usb2_regmap_conf = {
 	.max_register = U2P_R3,
 };
 
+static int phy_meson_gxl_usb2_init(struct phy *phy)
+{
+	struct phy_meson_gxl_usb2_priv *priv = phy_get_drvdata(phy);
+	int ret;
+
+	ret = reset_control_reset(priv->reset);
+	if (ret)
+		return ret;
+
+	ret = clk_prepare_enable(priv->clk);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static int phy_meson_gxl_usb2_exit(struct phy *phy)
+{
+	struct phy_meson_gxl_usb2_priv *priv = phy_get_drvdata(phy);
+
+	clk_disable_unprepare(priv->clk);
+
+	return 0;
+}
+
 static int phy_meson_gxl_usb2_reset(struct phy *phy)
 {
 	struct phy_meson_gxl_usb2_priv *priv = phy_get_drvdata(phy);
@@ -195,6 +222,8 @@ static int phy_meson_gxl_usb2_power_on(struct phy *phy)
 }
 
 static const struct phy_ops phy_meson_gxl_usb2_ops = {
+	.init		= phy_meson_gxl_usb2_init,
+	.exit		= phy_meson_gxl_usb2_exit,
 	.power_on	= phy_meson_gxl_usb2_power_on,
 	.power_off	= phy_meson_gxl_usb2_power_off,
 	.set_mode	= phy_meson_gxl_usb2_set_mode,
@@ -210,6 +239,7 @@ static int phy_meson_gxl_usb2_probe(struct platform_device *pdev)
 	struct phy_meson_gxl_usb2_priv *priv;
 	struct phy *phy;
 	void __iomem *base;
+	int ret;
 
 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
 	if (!priv)
@@ -222,28 +252,34 @@ static int phy_meson_gxl_usb2_probe(struct platform_device *pdev)
 	if (IS_ERR(base))
 		return PTR_ERR(base);
 
-	switch (of_usb_get_dr_mode_by_phy(dev->of_node, -1)) {
-	case USB_DR_MODE_PERIPHERAL:
-		priv->mode = PHY_MODE_USB_DEVICE;
-		break;
-	case USB_DR_MODE_OTG:
-		priv->mode = PHY_MODE_USB_OTG;
-		break;
-	case USB_DR_MODE_HOST:
-	default:
-		priv->mode = PHY_MODE_USB_HOST;
-		break;
-	}
+	/* start in host mode */
+	priv->mode = PHY_MODE_USB_HOST;
 
 	priv->regmap = devm_regmap_init_mmio(dev, base,
 					     &phy_meson_gxl_usb2_regmap_conf);
 	if (IS_ERR(priv->regmap))
 		return PTR_ERR(priv->regmap);
 
+	priv->clk = devm_clk_get(dev, "phy");
+	if (IS_ERR(priv->clk)) {
+		ret = PTR_ERR(priv->clk);
+		if (ret == -ENOENT)
+			priv->clk = NULL;
+		else
+			return ret;
+	}
+
+	priv->reset = devm_reset_control_get_optional_shared(dev, "phy");
+	if (IS_ERR(priv->reset))
+		return PTR_ERR(priv->reset);
+
 	phy = devm_phy_create(dev, NULL, &phy_meson_gxl_usb2_ops);
 	if (IS_ERR(phy)) {
-		dev_err(dev, "failed to create PHY\n");
-		return PTR_ERR(phy);
+		ret = PTR_ERR(phy);
+		if (ret != -EPROBE_DEFER)
+			dev_err(dev, "failed to create PHY\n");
+
+		return ret;
 	}
 
 	phy_set_drvdata(phy, priv);
diff --git a/drivers/phy/amlogic/phy-meson-gxl-usb3.c b/drivers/phy/amlogic/phy-meson-gxl-usb3.c
new file mode 100644
index 000000000000..d37d94ddf9c0
--- /dev/null
+++ b/drivers/phy/amlogic/phy-meson-gxl-usb3.c
@@ -0,0 +1,282 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Meson GXL USB3 PHY and OTG mode detection driver
+ *
+ * Copyright (C) 2018 Martin Blumenstingl <martin.blumenstingl@googlemail.com>
+ */
+
+#include <linux/bitfield.h>
+#include <linux/bitops.h>
+#include <linux/clk.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/phy/phy.h>
+#include <linux/regmap.h>
+#include <linux/reset.h>
+#include <linux/platform_device.h>
+
+#define USB_R0							0x00
+	#define USB_R0_P30_FSEL_MASK				GENMASK(5, 0)
+	#define USB_R0_P30_PHY_RESET				BIT(6)
+	#define USB_R0_P30_TEST_POWERDOWN_HSP			BIT(7)
+	#define USB_R0_P30_TEST_POWERDOWN_SSP			BIT(8)
+	#define USB_R0_P30_ACJT_LEVEL_MASK			GENMASK(13, 9)
+	#define USB_R0_P30_TX_BOOST_LEVEL_MASK			GENMASK(16, 14)
+	#define USB_R0_P30_LANE0_TX2RX_LOOPBACK			BIT(17)
+	#define USB_R0_P30_LANE0_EXT_PCLK_REQ			BIT(18)
+	#define USB_R0_P30_PCS_RX_LOS_MASK_VAL_MASK		GENMASK(28, 19)
+	#define USB_R0_U2D_SS_SCALEDOWN_MODE_MASK		GENMASK(30, 29)
+	#define USB_R0_U2D_ACT					BIT(31)
+
+#define USB_R1							0x04
+	#define USB_R1_U3H_BIGENDIAN_GS				BIT(0)
+	#define USB_R1_U3H_PME_ENABLE				BIT(1)
+	#define USB_R1_U3H_HUB_PORT_OVERCURRENT_MASK		GENMASK(6, 2)
+	#define USB_R1_U3H_HUB_PORT_PERM_ATTACH_MASK		GENMASK(11, 7)
+	#define USB_R1_U3H_HOST_U2_PORT_DISABLE_MASK		GENMASK(15, 12)
+	#define USB_R1_U3H_HOST_U3_PORT_DISABLE			BIT(16)
+	#define USB_R1_U3H_HOST_PORT_POWER_CONTROL_PRESENT	BIT(17)
+	#define USB_R1_U3H_HOST_MSI_ENABLE			BIT(18)
+	#define USB_R1_U3H_FLADJ_30MHZ_REG_MASK			GENMASK(24, 19)
+	#define USB_R1_P30_PCS_TX_SWING_FULL_MASK		GENMASK(31, 25)
+
+#define USB_R2							0x08
+	#define USB_R2_P30_CR_DATA_IN_MASK			GENMASK(15, 0)
+	#define USB_R2_P30_CR_READ				BIT(16)
+	#define USB_R2_P30_CR_WRITE				BIT(17)
+	#define USB_R2_P30_CR_CAP_ADDR				BIT(18)
+	#define USB_R2_P30_CR_CAP_DATA				BIT(19)
+	#define USB_R2_P30_PCS_TX_DEEMPH_3P5DB_MASK		GENMASK(25, 20)
+	#define USB_R2_P30_PCS_TX_DEEMPH_6DB_MASK		GENMASK(31, 26)
+
+#define USB_R3							0x0c
+	#define USB_R3_P30_SSC_ENABLE				BIT(0)
+	#define USB_R3_P30_SSC_RANGE_MASK			GENMASK(3, 1)
+	#define USB_R3_P30_SSC_REF_CLK_SEL_MASK			GENMASK(12, 4)
+	#define USB_R3_P30_REF_SSP_EN				BIT(13)
+	#define USB_R3_P30_LOS_BIAS_MASK			GENMASK(18, 16)
+	#define USB_R3_P30_LOS_LEVEL_MASK			GENMASK(23, 19)
+	#define USB_R3_P30_MPLL_MULTIPLIER_MASK			GENMASK(30, 24)
+
+#define USB_R4							0x10
+	#define USB_R4_P21_PORT_RESET_0				BIT(0)
+	#define USB_R4_P21_SLEEP_M0				BIT(1)
+	#define USB_R4_MEM_PD_MASK				GENMASK(3, 2)
+	#define USB_R4_P21_ONLY					BIT(4)
+
+#define USB_R5							0x14
+	#define USB_R5_ID_DIG_SYNC				BIT(0)
+	#define USB_R5_ID_DIG_REG				BIT(1)
+	#define USB_R5_ID_DIG_CFG_MASK				GENMASK(3, 2)
+	#define USB_R5_ID_DIG_EN_0				BIT(4)
+	#define USB_R5_ID_DIG_EN_1				BIT(5)
+	#define USB_R5_ID_DIG_CURR				BIT(6)
+	#define USB_R5_ID_DIG_IRQ				BIT(7)
+	#define USB_R5_ID_DIG_TH_MASK				GENMASK(15, 8)
+	#define USB_R5_ID_DIG_CNT_MASK				GENMASK(23, 16)
+
+/* read-only register */
+#define USB_R6							0x18
+	#define USB_R6_P30_CR_DATA_OUT_MASK			GENMASK(15, 0)
+	#define USB_R6_P30_CR_ACK				BIT(16)
+
+struct phy_meson_gxl_usb3_priv {
+	struct regmap		*regmap;
+	enum phy_mode		mode;
+	struct clk		*clk_phy;
+	struct clk		*clk_peripheral;
+	struct reset_control	*reset;
+};
+
+static const struct regmap_config phy_meson_gxl_usb3_regmap_conf = {
+	.reg_bits = 8,
+	.val_bits = 32,
+	.reg_stride = 4,
+	.max_register = USB_R6,
+};
+
+static int phy_meson_gxl_usb3_power_on(struct phy *phy)
+{
+	struct phy_meson_gxl_usb3_priv *priv = phy_get_drvdata(phy);
+
+	regmap_update_bits(priv->regmap, USB_R5, USB_R5_ID_DIG_EN_0,
+			   USB_R5_ID_DIG_EN_0);
+	regmap_update_bits(priv->regmap, USB_R5, USB_R5_ID_DIG_EN_1,
+			   USB_R5_ID_DIG_EN_1);
+	regmap_update_bits(priv->regmap, USB_R5, USB_R5_ID_DIG_TH_MASK,
+			   FIELD_PREP(USB_R5_ID_DIG_TH_MASK, 0xff));
+
+	return 0;
+}
+
+static int phy_meson_gxl_usb3_power_off(struct phy *phy)
+{
+	struct phy_meson_gxl_usb3_priv *priv = phy_get_drvdata(phy);
+
+	regmap_update_bits(priv->regmap, USB_R5, USB_R5_ID_DIG_EN_0, 0);
+	regmap_update_bits(priv->regmap, USB_R5, USB_R5_ID_DIG_EN_1, 0);
+
+	return 0;
+}
+
+static int phy_meson_gxl_usb3_set_mode(struct phy *phy, enum phy_mode mode)
+{
+	struct phy_meson_gxl_usb3_priv *priv = phy_get_drvdata(phy);
+
+	switch (mode) {
+	case PHY_MODE_USB_HOST:
+		regmap_update_bits(priv->regmap, USB_R0, USB_R0_U2D_ACT, 0);
+		regmap_update_bits(priv->regmap, USB_R4, USB_R4_P21_SLEEP_M0,
+				   0);
+		break;
+
+	case PHY_MODE_USB_DEVICE:
+		regmap_update_bits(priv->regmap, USB_R0, USB_R0_U2D_ACT,
+				   USB_R0_U2D_ACT);
+		regmap_update_bits(priv->regmap, USB_R4, USB_R4_P21_SLEEP_M0,
+				   USB_R4_P21_SLEEP_M0);
+		break;
+
+	default:
+		dev_err(&phy->dev, "unsupported PHY mode %d\n", mode);
+		return -EINVAL;
+	}
+
+	priv->mode = mode;
+
+	return 0;
+}
+
+static int phy_meson_gxl_usb3_init(struct phy *phy)
+{
+	struct phy_meson_gxl_usb3_priv *priv = phy_get_drvdata(phy);
+	int ret;
+
+	ret = reset_control_reset(priv->reset);
+	if (ret)
+		goto err;
+
+	ret = clk_prepare_enable(priv->clk_phy);
+	if (ret)
+		goto err;
+
+	ret = clk_prepare_enable(priv->clk_peripheral);
+	if (ret)
+		goto err_disable_clk_phy;
+
+	ret = phy_meson_gxl_usb3_set_mode(phy, priv->mode);
+	if (ret)
+		goto err_disable_clk_peripheral;
+
+	regmap_update_bits(priv->regmap, USB_R1,
+			   USB_R1_U3H_FLADJ_30MHZ_REG_MASK,
+			   FIELD_PREP(USB_R1_U3H_FLADJ_30MHZ_REG_MASK, 0x20));
+
+	return 0;
+
+err_disable_clk_peripheral:
+	clk_disable_unprepare(priv->clk_peripheral);
+err_disable_clk_phy:
+	clk_disable_unprepare(priv->clk_phy);
+err:
+	return ret;
+}
+
+static int phy_meson_gxl_usb3_exit(struct phy *phy)
+{
+	struct phy_meson_gxl_usb3_priv *priv = phy_get_drvdata(phy);
+
+	clk_disable_unprepare(priv->clk_peripheral);
+	clk_disable_unprepare(priv->clk_phy);
+
+	return 0;
+}
+
+static const struct phy_ops phy_meson_gxl_usb3_ops = {
+	.power_on	= phy_meson_gxl_usb3_power_on,
+	.power_off	= phy_meson_gxl_usb3_power_off,
+	.set_mode	= phy_meson_gxl_usb3_set_mode,
+	.init		= phy_meson_gxl_usb3_init,
+	.exit		= phy_meson_gxl_usb3_exit,
+	.owner		= THIS_MODULE,
+};
+
+static int phy_meson_gxl_usb3_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct device_node *np = dev->of_node;
+	struct phy_meson_gxl_usb3_priv *priv;
+	struct resource *res;
+	struct phy *phy;
+	struct phy_provider *phy_provider;
+	void __iomem *base;
+	int ret;
+
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	base = devm_ioremap_resource(dev, res);
+	if (IS_ERR(base))
+		return PTR_ERR(base);
+
+	priv->regmap = devm_regmap_init_mmio(dev, base,
+					     &phy_meson_gxl_usb3_regmap_conf);
+	if (IS_ERR(priv->regmap))
+		return PTR_ERR(priv->regmap);
+
+	priv->clk_phy = devm_clk_get(dev, "phy");
+	if (IS_ERR(priv->clk_phy))
+		return PTR_ERR(priv->clk_phy);
+
+	priv->clk_peripheral = devm_clk_get(dev, "peripheral");
+	if (IS_ERR(priv->clk_peripheral))
+		return PTR_ERR(priv->clk_peripheral);
+
+	priv->reset = devm_reset_control_array_get_shared(dev);
+	if (IS_ERR(priv->reset))
+		return PTR_ERR(priv->reset);
+
+	/*
+	 * default to host mode as hardware defaults and/or boot-loader
+	 * behavior can result in this PHY starting up in device mode. this
+	 * default and the initialization in phy_meson_gxl_usb3_init ensure
+	 * that we reproducibly start in a known mode on all devices.
+	 */
+	priv->mode = PHY_MODE_USB_HOST;
+
+	phy = devm_phy_create(dev, np, &phy_meson_gxl_usb3_ops);
+	if (IS_ERR(phy)) {
+		ret = PTR_ERR(phy);
+		if (ret != -EPROBE_DEFER)
+			dev_err(dev, "failed to create PHY\n");
+
+		return ret;
+	}
+
+	phy_set_drvdata(phy, priv);
+
+	phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
+
+	return PTR_ERR_OR_ZERO(phy_provider);
+}
+
+static const struct of_device_id phy_meson_gxl_usb3_of_match[] = {
+	{ .compatible = "amlogic,meson-gxl-usb3-phy", },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, phy_meson_gxl_usb3_of_match);
+
+static struct platform_driver phy_meson_gxl_usb3_driver = {
+	.probe	= phy_meson_gxl_usb3_probe,
+	.driver	= {
+		.name		= "phy-meson-gxl-usb3",
+		.of_match_table	= phy_meson_gxl_usb3_of_match,
+	},
+};
+module_platform_driver(phy_meson_gxl_usb3_driver);
+
+MODULE_AUTHOR("Martin Blumenstingl <martin.blumenstingl@googlemail.com>");
+MODULE_DESCRIPTION("Meson GXL USB3 PHY and OTG detection driver");
+MODULE_LICENSE("GPL v2");