1c9999337SNeil Armstrong // SPDX-License-Identifier: GPL-2.0 2c9999337SNeil Armstrong /* 3c9999337SNeil Armstrong * USB Glue for Amlogic G12A SoCs 4c9999337SNeil Armstrong * 5c9999337SNeil Armstrong * Copyright (c) 2019 BayLibre, SAS 6c9999337SNeil Armstrong * Author: Neil Armstrong <narmstrong@baylibre.com> 7c9999337SNeil Armstrong */ 8c9999337SNeil Armstrong 9c9999337SNeil Armstrong /* 10c9999337SNeil Armstrong * The USB is organized with a glue around the DWC3 Controller IP as : 11c9999337SNeil Armstrong * - Control registers for each USB2 Ports 12c9999337SNeil Armstrong * - Control registers for the USB PHY layer 13c9999337SNeil Armstrong * - SuperSpeed PHY can be enabled only if port is used 14f90db107SNeil Armstrong * - Dynamic OTG switching with ID change interrupt 15c9999337SNeil Armstrong */ 16c9999337SNeil Armstrong 17c9999337SNeil Armstrong #include <linux/module.h> 18c9999337SNeil Armstrong #include <linux/kernel.h> 19c9999337SNeil Armstrong #include <linux/platform_device.h> 20c9999337SNeil Armstrong #include <linux/clk.h> 21c9999337SNeil Armstrong #include <linux/of.h> 22c9999337SNeil Armstrong #include <linux/of_platform.h> 23c9999337SNeil Armstrong #include <linux/pm_runtime.h> 24c9999337SNeil Armstrong #include <linux/regmap.h> 25c9999337SNeil Armstrong #include <linux/bitfield.h> 26c9999337SNeil Armstrong #include <linux/bitops.h> 27c9999337SNeil Armstrong #include <linux/reset.h> 28c9999337SNeil Armstrong #include <linux/phy/phy.h> 29c9999337SNeil Armstrong #include <linux/usb/otg.h> 30c9999337SNeil Armstrong #include <linux/usb/role.h> 31c9999337SNeil Armstrong #include <linux/regulator/consumer.h> 32c9999337SNeil Armstrong 33013af227SNeil Armstrong /* USB2 Ports Control Registers, offsets are per-port */ 34c9999337SNeil Armstrong 35c9999337SNeil Armstrong #define U2P_REG_SIZE 0x20 36c9999337SNeil Armstrong 37c9999337SNeil Armstrong #define U2P_R0 0x0 38c9999337SNeil Armstrong #define U2P_R0_HOST_DEVICE BIT(0) 39c9999337SNeil Armstrong #define U2P_R0_POWER_OK BIT(1) 40c9999337SNeil Armstrong #define U2P_R0_HAST_MODE BIT(2) 41c9999337SNeil Armstrong #define U2P_R0_POWER_ON_RESET BIT(3) 42c9999337SNeil Armstrong #define U2P_R0_ID_PULLUP BIT(4) 43c9999337SNeil Armstrong #define U2P_R0_DRV_VBUS BIT(5) 44c9999337SNeil Armstrong 45c9999337SNeil Armstrong #define U2P_R1 0x4 46c9999337SNeil Armstrong #define U2P_R1_PHY_READY BIT(0) 47c9999337SNeil Armstrong #define U2P_R1_ID_DIG BIT(1) 48c9999337SNeil Armstrong #define U2P_R1_OTG_SESSION_VALID BIT(2) 49c9999337SNeil Armstrong #define U2P_R1_VBUS_VALID BIT(3) 50c9999337SNeil Armstrong 51c9999337SNeil Armstrong /* USB Glue Control Registers */ 52c9999337SNeil Armstrong 53013af227SNeil Armstrong #define G12A_GLUE_OFFSET 0x80 54013af227SNeil Armstrong 55013af227SNeil Armstrong #define USB_R0 0x00 56c9999337SNeil Armstrong #define USB_R0_P30_LANE0_TX2RX_LOOPBACK BIT(17) 57c9999337SNeil Armstrong #define USB_R0_P30_LANE0_EXT_PCLK_REQ BIT(18) 58c9999337SNeil Armstrong #define USB_R0_P30_PCS_RX_LOS_MASK_VAL_MASK GENMASK(28, 19) 59c9999337SNeil Armstrong #define USB_R0_U2D_SS_SCALEDOWN_MODE_MASK GENMASK(30, 29) 60c9999337SNeil Armstrong #define USB_R0_U2D_ACT BIT(31) 61c9999337SNeil Armstrong 62013af227SNeil Armstrong #define USB_R1 0x04 63c9999337SNeil Armstrong #define USB_R1_U3H_BIGENDIAN_GS BIT(0) 64c9999337SNeil Armstrong #define USB_R1_U3H_PME_ENABLE BIT(1) 65c9999337SNeil Armstrong #define USB_R1_U3H_HUB_PORT_OVERCURRENT_MASK GENMASK(4, 2) 66c9999337SNeil Armstrong #define USB_R1_U3H_HUB_PORT_PERM_ATTACH_MASK GENMASK(9, 7) 67c9999337SNeil Armstrong #define USB_R1_U3H_HOST_U2_PORT_DISABLE_MASK GENMASK(13, 12) 68c9999337SNeil Armstrong #define USB_R1_U3H_HOST_U3_PORT_DISABLE BIT(16) 69c9999337SNeil Armstrong #define USB_R1_U3H_HOST_PORT_POWER_CONTROL_PRESENT BIT(17) 70c9999337SNeil Armstrong #define USB_R1_U3H_HOST_MSI_ENABLE BIT(18) 71c9999337SNeil Armstrong #define USB_R1_U3H_FLADJ_30MHZ_REG_MASK GENMASK(24, 19) 72c9999337SNeil Armstrong #define USB_R1_P30_PCS_TX_SWING_FULL_MASK GENMASK(31, 25) 73c9999337SNeil Armstrong 74013af227SNeil Armstrong #define USB_R2 0x08 75c9999337SNeil Armstrong #define USB_R2_P30_PCS_TX_DEEMPH_3P5DB_MASK GENMASK(25, 20) 76c9999337SNeil Armstrong #define USB_R2_P30_PCS_TX_DEEMPH_6DB_MASK GENMASK(31, 26) 77c9999337SNeil Armstrong 78013af227SNeil Armstrong #define USB_R3 0x0c 79c9999337SNeil Armstrong #define USB_R3_P30_SSC_ENABLE BIT(0) 80c9999337SNeil Armstrong #define USB_R3_P30_SSC_RANGE_MASK GENMASK(3, 1) 81c9999337SNeil Armstrong #define USB_R3_P30_SSC_REF_CLK_SEL_MASK GENMASK(12, 4) 82c9999337SNeil Armstrong #define USB_R3_P30_REF_SSP_EN BIT(13) 83c9999337SNeil Armstrong 84013af227SNeil Armstrong #define USB_R4 0x10 85c9999337SNeil Armstrong #define USB_R4_P21_PORT_RESET_0 BIT(0) 86c9999337SNeil Armstrong #define USB_R4_P21_SLEEP_M0 BIT(1) 87c9999337SNeil Armstrong #define USB_R4_MEM_PD_MASK GENMASK(3, 2) 88c9999337SNeil Armstrong #define USB_R4_P21_ONLY BIT(4) 89c9999337SNeil Armstrong 90013af227SNeil Armstrong #define USB_R5 0x14 91c9999337SNeil Armstrong #define USB_R5_ID_DIG_SYNC BIT(0) 92c9999337SNeil Armstrong #define USB_R5_ID_DIG_REG BIT(1) 93c9999337SNeil Armstrong #define USB_R5_ID_DIG_CFG_MASK GENMASK(3, 2) 94c9999337SNeil Armstrong #define USB_R5_ID_DIG_EN_0 BIT(4) 95c9999337SNeil Armstrong #define USB_R5_ID_DIG_EN_1 BIT(5) 96c9999337SNeil Armstrong #define USB_R5_ID_DIG_CURR BIT(6) 97c9999337SNeil Armstrong #define USB_R5_ID_DIG_IRQ BIT(7) 98c9999337SNeil Armstrong #define USB_R5_ID_DIG_TH_MASK GENMASK(15, 8) 99c9999337SNeil Armstrong #define USB_R5_ID_DIG_CNT_MASK GENMASK(23, 16) 100c9999337SNeil Armstrong 1015174564cSNeil Armstrong #define PHY_COUNT 3 1025174564cSNeil Armstrong #define USB2_OTG_PHY 1 103c9999337SNeil Armstrong 1041e355f21SHanjie Lin static struct clk_bulk_data meson_g12a_clocks[] = { 1051e355f21SHanjie Lin { .id = NULL }, 1061e355f21SHanjie Lin }; 1071e355f21SHanjie Lin 1081e355f21SHanjie Lin static struct clk_bulk_data meson_a1_clocks[] = { 1091e355f21SHanjie Lin { .id = "usb_ctrl" }, 1101e355f21SHanjie Lin { .id = "usb_bus" }, 1111e355f21SHanjie Lin { .id = "xtal_usb_ctrl" }, 1121e355f21SHanjie Lin }; 1131e355f21SHanjie Lin 1145174564cSNeil Armstrong static const char *meson_g12a_phy_names[] = { 1155174564cSNeil Armstrong "usb2-phy0", "usb2-phy1", "usb3-phy0", 1165174564cSNeil Armstrong }; 1175174564cSNeil Armstrong 1185174564cSNeil Armstrong /* 1195174564cSNeil Armstrong * Amlogic A1 has a single physical PHY, in slot 1, but still has the 1205174564cSNeil Armstrong * two U2 PHY controls register blocks like G12A. 1215174564cSNeil Armstrong * Handling the first PHY on slot 1 would need a large amount of code 1225174564cSNeil Armstrong * changes, and the current management is generic enough to handle it 1235174564cSNeil Armstrong * correctly when only the "usb2-phy1" phy is specified on-par with the 1245174564cSNeil Armstrong * DT bindings. 1255174564cSNeil Armstrong */ 1265174564cSNeil Armstrong static const char *meson_a1_phy_names[] = { 1275174564cSNeil Armstrong "usb2-phy0", "usb2-phy1" 1285174564cSNeil Armstrong }; 1295174564cSNeil Armstrong 130013af227SNeil Armstrong struct dwc3_meson_g12a; 131013af227SNeil Armstrong 1321e355f21SHanjie Lin struct dwc3_meson_g12a_drvdata { 1331e355f21SHanjie Lin bool otg_switch_supported; 1341e355f21SHanjie Lin struct clk_bulk_data *clks; 1351e355f21SHanjie Lin int num_clks; 1365174564cSNeil Armstrong const char **phy_names; 1375174564cSNeil Armstrong int num_phys; 138013af227SNeil Armstrong int (*setup_regmaps)(struct dwc3_meson_g12a *priv, void __iomem *base); 1391e355f21SHanjie Lin }; 1401e355f21SHanjie Lin 141013af227SNeil Armstrong static int dwc3_meson_g12a_setup_regmaps(struct dwc3_meson_g12a *priv, 142013af227SNeil Armstrong void __iomem *base); 143013af227SNeil Armstrong 1441e355f21SHanjie Lin static struct dwc3_meson_g12a_drvdata g12a_drvdata = { 1451e355f21SHanjie Lin .otg_switch_supported = true, 1461e355f21SHanjie Lin .clks = meson_g12a_clocks, 1471e355f21SHanjie Lin .num_clks = ARRAY_SIZE(meson_g12a_clocks), 1485174564cSNeil Armstrong .phy_names = meson_g12a_phy_names, 1495174564cSNeil Armstrong .num_phys = ARRAY_SIZE(meson_g12a_phy_names), 150013af227SNeil Armstrong .setup_regmaps = dwc3_meson_g12a_setup_regmaps, 1511e355f21SHanjie Lin }; 1521e355f21SHanjie Lin 1531e355f21SHanjie Lin static struct dwc3_meson_g12a_drvdata a1_drvdata = { 1541e355f21SHanjie Lin .otg_switch_supported = false, 1551e355f21SHanjie Lin .clks = meson_a1_clocks, 1561e355f21SHanjie Lin .num_clks = ARRAY_SIZE(meson_a1_clocks), 1575174564cSNeil Armstrong .phy_names = meson_a1_phy_names, 1585174564cSNeil Armstrong .num_phys = ARRAY_SIZE(meson_a1_phy_names), 159013af227SNeil Armstrong .setup_regmaps = dwc3_meson_g12a_setup_regmaps, 1601e355f21SHanjie Lin }; 1611e355f21SHanjie Lin 162c9999337SNeil Armstrong struct dwc3_meson_g12a { 163c9999337SNeil Armstrong struct device *dev; 164013af227SNeil Armstrong struct regmap *u2p_regmap[PHY_COUNT]; 165013af227SNeil Armstrong struct regmap *usb_glue_regmap; 166c9999337SNeil Armstrong struct reset_control *reset; 167c9999337SNeil Armstrong struct phy *phys[PHY_COUNT]; 168c9999337SNeil Armstrong enum usb_dr_mode otg_mode; 169c9999337SNeil Armstrong enum phy_mode otg_phy_mode; 170c9999337SNeil Armstrong unsigned int usb2_ports; 171c9999337SNeil Armstrong unsigned int usb3_ports; 172c9999337SNeil Armstrong struct regulator *vbus; 173c9999337SNeil Armstrong struct usb_role_switch_desc switch_desc; 174c9999337SNeil Armstrong struct usb_role_switch *role_switch; 1751e355f21SHanjie Lin const struct dwc3_meson_g12a_drvdata *drvdata; 176c9999337SNeil Armstrong }; 177c9999337SNeil Armstrong 178c9999337SNeil Armstrong static void dwc3_meson_g12a_usb2_set_mode(struct dwc3_meson_g12a *priv, 179c9999337SNeil Armstrong int i, enum phy_mode mode) 180c9999337SNeil Armstrong { 181c9999337SNeil Armstrong if (mode == PHY_MODE_USB_HOST) 182013af227SNeil Armstrong regmap_update_bits(priv->u2p_regmap[i], U2P_R0, 183c9999337SNeil Armstrong U2P_R0_HOST_DEVICE, 184c9999337SNeil Armstrong U2P_R0_HOST_DEVICE); 185c9999337SNeil Armstrong else 186013af227SNeil Armstrong regmap_update_bits(priv->u2p_regmap[i], U2P_R0, 187c9999337SNeil Armstrong U2P_R0_HOST_DEVICE, 0); 188c9999337SNeil Armstrong } 189c9999337SNeil Armstrong 190c9999337SNeil Armstrong static int dwc3_meson_g12a_usb2_init(struct dwc3_meson_g12a *priv) 191c9999337SNeil Armstrong { 192c9999337SNeil Armstrong int i; 193c9999337SNeil Armstrong 194c9999337SNeil Armstrong if (priv->otg_mode == USB_DR_MODE_PERIPHERAL) 195c9999337SNeil Armstrong priv->otg_phy_mode = PHY_MODE_USB_DEVICE; 196c9999337SNeil Armstrong else 197c9999337SNeil Armstrong priv->otg_phy_mode = PHY_MODE_USB_HOST; 198c9999337SNeil Armstrong 1995174564cSNeil Armstrong for (i = 0; i < priv->drvdata->num_phys; ++i) { 200c9999337SNeil Armstrong if (!priv->phys[i]) 201c9999337SNeil Armstrong continue; 202c9999337SNeil Armstrong 2035174564cSNeil Armstrong if (!strstr(priv->drvdata->phy_names[i], "usb2")) 2045174564cSNeil Armstrong continue; 2055174564cSNeil Armstrong 206013af227SNeil Armstrong regmap_update_bits(priv->u2p_regmap[i], U2P_R0, 207c9999337SNeil Armstrong U2P_R0_POWER_ON_RESET, 208c9999337SNeil Armstrong U2P_R0_POWER_ON_RESET); 209c9999337SNeil Armstrong 2101e355f21SHanjie Lin if (priv->drvdata->otg_switch_supported && i == USB2_OTG_PHY) { 211013af227SNeil Armstrong regmap_update_bits(priv->u2p_regmap[i], U2P_R0, 212c9999337SNeil Armstrong U2P_R0_ID_PULLUP | U2P_R0_DRV_VBUS, 213c9999337SNeil Armstrong U2P_R0_ID_PULLUP | U2P_R0_DRV_VBUS); 214c9999337SNeil Armstrong 215c9999337SNeil Armstrong dwc3_meson_g12a_usb2_set_mode(priv, i, 216c9999337SNeil Armstrong priv->otg_phy_mode); 217c9999337SNeil Armstrong } else 218c9999337SNeil Armstrong dwc3_meson_g12a_usb2_set_mode(priv, i, 219c9999337SNeil Armstrong PHY_MODE_USB_HOST); 220c9999337SNeil Armstrong 221013af227SNeil Armstrong regmap_update_bits(priv->u2p_regmap[i], U2P_R0, 222c9999337SNeil Armstrong U2P_R0_POWER_ON_RESET, 0); 223c9999337SNeil Armstrong } 224c9999337SNeil Armstrong 225c9999337SNeil Armstrong return 0; 226c9999337SNeil Armstrong } 227c9999337SNeil Armstrong 228c9999337SNeil Armstrong static void dwc3_meson_g12a_usb3_init(struct dwc3_meson_g12a *priv) 229c9999337SNeil Armstrong { 230013af227SNeil Armstrong regmap_update_bits(priv->usb_glue_regmap, USB_R3, 231c9999337SNeil Armstrong USB_R3_P30_SSC_RANGE_MASK | 232c9999337SNeil Armstrong USB_R3_P30_REF_SSP_EN, 233c9999337SNeil Armstrong USB_R3_P30_SSC_ENABLE | 234c9999337SNeil Armstrong FIELD_PREP(USB_R3_P30_SSC_RANGE_MASK, 2) | 235c9999337SNeil Armstrong USB_R3_P30_REF_SSP_EN); 236c9999337SNeil Armstrong udelay(2); 237c9999337SNeil Armstrong 238013af227SNeil Armstrong regmap_update_bits(priv->usb_glue_regmap, USB_R2, 239c9999337SNeil Armstrong USB_R2_P30_PCS_TX_DEEMPH_3P5DB_MASK, 240c9999337SNeil Armstrong FIELD_PREP(USB_R2_P30_PCS_TX_DEEMPH_3P5DB_MASK, 0x15)); 241c9999337SNeil Armstrong 242013af227SNeil Armstrong regmap_update_bits(priv->usb_glue_regmap, USB_R2, 243c9999337SNeil Armstrong USB_R2_P30_PCS_TX_DEEMPH_6DB_MASK, 244c9999337SNeil Armstrong FIELD_PREP(USB_R2_P30_PCS_TX_DEEMPH_6DB_MASK, 0x20)); 245c9999337SNeil Armstrong 246c9999337SNeil Armstrong udelay(2); 247c9999337SNeil Armstrong 248013af227SNeil Armstrong regmap_update_bits(priv->usb_glue_regmap, USB_R1, 249c9999337SNeil Armstrong USB_R1_U3H_HOST_PORT_POWER_CONTROL_PRESENT, 250c9999337SNeil Armstrong USB_R1_U3H_HOST_PORT_POWER_CONTROL_PRESENT); 251c9999337SNeil Armstrong 252013af227SNeil Armstrong regmap_update_bits(priv->usb_glue_regmap, USB_R1, 253c9999337SNeil Armstrong USB_R1_P30_PCS_TX_SWING_FULL_MASK, 254c9999337SNeil Armstrong FIELD_PREP(USB_R1_P30_PCS_TX_SWING_FULL_MASK, 127)); 255c9999337SNeil Armstrong } 256c9999337SNeil Armstrong 257c9999337SNeil Armstrong static void dwc3_meson_g12a_usb_otg_apply_mode(struct dwc3_meson_g12a *priv) 258c9999337SNeil Armstrong { 259c9999337SNeil Armstrong if (priv->otg_phy_mode == PHY_MODE_USB_DEVICE) { 260013af227SNeil Armstrong regmap_update_bits(priv->usb_glue_regmap, USB_R0, 261c9999337SNeil Armstrong USB_R0_U2D_ACT, USB_R0_U2D_ACT); 262013af227SNeil Armstrong regmap_update_bits(priv->usb_glue_regmap, USB_R0, 263c9999337SNeil Armstrong USB_R0_U2D_SS_SCALEDOWN_MODE_MASK, 0); 264013af227SNeil Armstrong regmap_update_bits(priv->usb_glue_regmap, USB_R4, 265c9999337SNeil Armstrong USB_R4_P21_SLEEP_M0, USB_R4_P21_SLEEP_M0); 266c9999337SNeil Armstrong } else { 267013af227SNeil Armstrong regmap_update_bits(priv->usb_glue_regmap, USB_R0, 268c9999337SNeil Armstrong USB_R0_U2D_ACT, 0); 269013af227SNeil Armstrong regmap_update_bits(priv->usb_glue_regmap, USB_R4, 270c9999337SNeil Armstrong USB_R4_P21_SLEEP_M0, 0); 271c9999337SNeil Armstrong } 272c9999337SNeil Armstrong } 273c9999337SNeil Armstrong 274c9999337SNeil Armstrong static int dwc3_meson_g12a_usb_init(struct dwc3_meson_g12a *priv) 275c9999337SNeil Armstrong { 276c9999337SNeil Armstrong int ret; 277c9999337SNeil Armstrong 278c9999337SNeil Armstrong ret = dwc3_meson_g12a_usb2_init(priv); 279c9999337SNeil Armstrong if (ret) 280c9999337SNeil Armstrong return ret; 281c9999337SNeil Armstrong 282013af227SNeil Armstrong regmap_update_bits(priv->usb_glue_regmap, USB_R1, 283c9999337SNeil Armstrong USB_R1_U3H_FLADJ_30MHZ_REG_MASK, 284c9999337SNeil Armstrong FIELD_PREP(USB_R1_U3H_FLADJ_30MHZ_REG_MASK, 0x20)); 285c9999337SNeil Armstrong 286013af227SNeil Armstrong regmap_update_bits(priv->usb_glue_regmap, USB_R5, 287c9999337SNeil Armstrong USB_R5_ID_DIG_EN_0, 288c9999337SNeil Armstrong USB_R5_ID_DIG_EN_0); 289013af227SNeil Armstrong regmap_update_bits(priv->usb_glue_regmap, USB_R5, 290c9999337SNeil Armstrong USB_R5_ID_DIG_EN_1, 291c9999337SNeil Armstrong USB_R5_ID_DIG_EN_1); 292013af227SNeil Armstrong regmap_update_bits(priv->usb_glue_regmap, USB_R5, 293c9999337SNeil Armstrong USB_R5_ID_DIG_TH_MASK, 294c9999337SNeil Armstrong FIELD_PREP(USB_R5_ID_DIG_TH_MASK, 0xff)); 295c9999337SNeil Armstrong 296c9999337SNeil Armstrong /* If we have an actual SuperSpeed port, initialize it */ 297c9999337SNeil Armstrong if (priv->usb3_ports) 298c9999337SNeil Armstrong dwc3_meson_g12a_usb3_init(priv); 299c9999337SNeil Armstrong 300c9999337SNeil Armstrong dwc3_meson_g12a_usb_otg_apply_mode(priv); 301c9999337SNeil Armstrong 302c9999337SNeil Armstrong return 0; 303c9999337SNeil Armstrong } 304c9999337SNeil Armstrong 305013af227SNeil Armstrong static const struct regmap_config phy_meson_g12a_usb_glue_regmap_conf = { 306013af227SNeil Armstrong .name = "usb-glue", 307c9999337SNeil Armstrong .reg_bits = 8, 308c9999337SNeil Armstrong .val_bits = 32, 309c9999337SNeil Armstrong .reg_stride = 4, 310c9999337SNeil Armstrong .max_register = USB_R5, 311c9999337SNeil Armstrong }; 312c9999337SNeil Armstrong 313c9999337SNeil Armstrong static int dwc3_meson_g12a_get_phys(struct dwc3_meson_g12a *priv) 314c9999337SNeil Armstrong { 3155174564cSNeil Armstrong const char *phy_name; 316c9999337SNeil Armstrong int i; 317c9999337SNeil Armstrong 3185174564cSNeil Armstrong for (i = 0 ; i < priv->drvdata->num_phys ; ++i) { 3195174564cSNeil Armstrong phy_name = priv->drvdata->phy_names[i]; 3205174564cSNeil Armstrong priv->phys[i] = devm_phy_optional_get(priv->dev, phy_name); 321c9999337SNeil Armstrong if (!priv->phys[i]) 322c9999337SNeil Armstrong continue; 323c9999337SNeil Armstrong 324c9999337SNeil Armstrong if (IS_ERR(priv->phys[i])) 325c9999337SNeil Armstrong return PTR_ERR(priv->phys[i]); 326c9999337SNeil Armstrong 3275174564cSNeil Armstrong if (strstr(phy_name, "usb3")) 328c9999337SNeil Armstrong priv->usb3_ports++; 329c9999337SNeil Armstrong else 330c9999337SNeil Armstrong priv->usb2_ports++; 331c9999337SNeil Armstrong } 332c9999337SNeil Armstrong 333c9999337SNeil Armstrong dev_info(priv->dev, "USB2 ports: %d\n", priv->usb2_ports); 334c9999337SNeil Armstrong dev_info(priv->dev, "USB3 ports: %d\n", priv->usb3_ports); 335c9999337SNeil Armstrong 336c9999337SNeil Armstrong return 0; 337c9999337SNeil Armstrong } 338c9999337SNeil Armstrong 339c9999337SNeil Armstrong static enum phy_mode dwc3_meson_g12a_get_id(struct dwc3_meson_g12a *priv) 340c9999337SNeil Armstrong { 341c9999337SNeil Armstrong u32 reg; 342c9999337SNeil Armstrong 343013af227SNeil Armstrong regmap_read(priv->usb_glue_regmap, USB_R5, ®); 344c9999337SNeil Armstrong 345c9999337SNeil Armstrong if (reg & (USB_R5_ID_DIG_SYNC | USB_R5_ID_DIG_REG)) 346c9999337SNeil Armstrong return PHY_MODE_USB_DEVICE; 347c9999337SNeil Armstrong 348c9999337SNeil Armstrong return PHY_MODE_USB_HOST; 349c9999337SNeil Armstrong } 350c9999337SNeil Armstrong 351c9999337SNeil Armstrong static int dwc3_meson_g12a_otg_mode_set(struct dwc3_meson_g12a *priv, 352c9999337SNeil Armstrong enum phy_mode mode) 353c9999337SNeil Armstrong { 354c9999337SNeil Armstrong int ret; 355c9999337SNeil Armstrong 3561e355f21SHanjie Lin if (!priv->drvdata->otg_switch_supported || !priv->phys[USB2_OTG_PHY]) 357c9999337SNeil Armstrong return -EINVAL; 358c9999337SNeil Armstrong 359c9999337SNeil Armstrong if (mode == PHY_MODE_USB_HOST) 360c9999337SNeil Armstrong dev_info(priv->dev, "switching to Host Mode\n"); 361c9999337SNeil Armstrong else 362c9999337SNeil Armstrong dev_info(priv->dev, "switching to Device Mode\n"); 363c9999337SNeil Armstrong 364c9999337SNeil Armstrong if (priv->vbus) { 365c9999337SNeil Armstrong if (mode == PHY_MODE_USB_DEVICE) 366c9999337SNeil Armstrong ret = regulator_disable(priv->vbus); 367c9999337SNeil Armstrong else 368c9999337SNeil Armstrong ret = regulator_enable(priv->vbus); 369c9999337SNeil Armstrong if (ret) 370c9999337SNeil Armstrong return ret; 371c9999337SNeil Armstrong } 372c9999337SNeil Armstrong 373c9999337SNeil Armstrong priv->otg_phy_mode = mode; 374c9999337SNeil Armstrong 375c9999337SNeil Armstrong dwc3_meson_g12a_usb2_set_mode(priv, USB2_OTG_PHY, mode); 376c9999337SNeil Armstrong 377c9999337SNeil Armstrong dwc3_meson_g12a_usb_otg_apply_mode(priv); 378c9999337SNeil Armstrong 379c9999337SNeil Armstrong return 0; 380c9999337SNeil Armstrong } 381c9999337SNeil Armstrong 382bce3052fSHeikki Krogerus static int dwc3_meson_g12a_role_set(struct usb_role_switch *sw, 383bce3052fSHeikki Krogerus enum usb_role role) 384c9999337SNeil Armstrong { 385bce3052fSHeikki Krogerus struct dwc3_meson_g12a *priv = usb_role_switch_get_drvdata(sw); 386c9999337SNeil Armstrong enum phy_mode mode; 387c9999337SNeil Armstrong 388c9999337SNeil Armstrong if (role == USB_ROLE_NONE) 389c9999337SNeil Armstrong return 0; 390c9999337SNeil Armstrong 391c9999337SNeil Armstrong mode = (role == USB_ROLE_HOST) ? PHY_MODE_USB_HOST 392c9999337SNeil Armstrong : PHY_MODE_USB_DEVICE; 393c9999337SNeil Armstrong 394c9999337SNeil Armstrong if (mode == priv->otg_phy_mode) 395c9999337SNeil Armstrong return 0; 396c9999337SNeil Armstrong 397c9999337SNeil Armstrong return dwc3_meson_g12a_otg_mode_set(priv, mode); 398c9999337SNeil Armstrong } 399c9999337SNeil Armstrong 400bce3052fSHeikki Krogerus static enum usb_role dwc3_meson_g12a_role_get(struct usb_role_switch *sw) 401c9999337SNeil Armstrong { 402bce3052fSHeikki Krogerus struct dwc3_meson_g12a *priv = usb_role_switch_get_drvdata(sw); 403c9999337SNeil Armstrong 404c9999337SNeil Armstrong return priv->otg_phy_mode == PHY_MODE_USB_HOST ? 405c9999337SNeil Armstrong USB_ROLE_HOST : USB_ROLE_DEVICE; 406c9999337SNeil Armstrong } 407c9999337SNeil Armstrong 408f90db107SNeil Armstrong static irqreturn_t dwc3_meson_g12a_irq_thread(int irq, void *data) 409f90db107SNeil Armstrong { 410f90db107SNeil Armstrong struct dwc3_meson_g12a *priv = data; 411f90db107SNeil Armstrong enum phy_mode otg_id; 412f90db107SNeil Armstrong 413f90db107SNeil Armstrong otg_id = dwc3_meson_g12a_get_id(priv); 414f90db107SNeil Armstrong if (otg_id != priv->otg_phy_mode) { 415f90db107SNeil Armstrong if (dwc3_meson_g12a_otg_mode_set(priv, otg_id)) 416f90db107SNeil Armstrong dev_warn(priv->dev, "Failed to switch OTG mode\n"); 417f90db107SNeil Armstrong } 418f90db107SNeil Armstrong 419013af227SNeil Armstrong regmap_update_bits(priv->usb_glue_regmap, USB_R5, 420013af227SNeil Armstrong USB_R5_ID_DIG_IRQ, 0); 421f90db107SNeil Armstrong 422f90db107SNeil Armstrong return IRQ_HANDLED; 423f90db107SNeil Armstrong } 424f90db107SNeil Armstrong 425c9999337SNeil Armstrong static struct device *dwc3_meson_g12_find_child(struct device *dev, 426c9999337SNeil Armstrong const char *compatible) 427c9999337SNeil Armstrong { 428c9999337SNeil Armstrong struct platform_device *pdev; 429c9999337SNeil Armstrong struct device_node *np; 430c9999337SNeil Armstrong 431c9999337SNeil Armstrong np = of_get_compatible_child(dev->of_node, compatible); 432c9999337SNeil Armstrong if (!np) 433c9999337SNeil Armstrong return NULL; 434c9999337SNeil Armstrong 435c9999337SNeil Armstrong pdev = of_find_device_by_node(np); 436c9999337SNeil Armstrong of_node_put(np); 437c9999337SNeil Armstrong if (!pdev) 438c9999337SNeil Armstrong return NULL; 439c9999337SNeil Armstrong 440c9999337SNeil Armstrong return &pdev->dev; 441c9999337SNeil Armstrong } 442c9999337SNeil Armstrong 4431e355f21SHanjie Lin static int dwc3_meson_g12a_otg_init(struct platform_device *pdev, 4441e355f21SHanjie Lin struct dwc3_meson_g12a *priv) 445c9999337SNeil Armstrong { 446c9999337SNeil Armstrong enum phy_mode otg_id; 4471e355f21SHanjie Lin int ret, irq; 4481e355f21SHanjie Lin struct device *dev = &pdev->dev; 449c9999337SNeil Armstrong 4501e355f21SHanjie Lin if (!priv->drvdata->otg_switch_supported) 4511e355f21SHanjie Lin return 0; 452c9999337SNeil Armstrong 453f90db107SNeil Armstrong if (priv->otg_mode == USB_DR_MODE_OTG) { 454f90db107SNeil Armstrong /* Ack irq before registering */ 455013af227SNeil Armstrong regmap_update_bits(priv->usb_glue_regmap, USB_R5, 456f90db107SNeil Armstrong USB_R5_ID_DIG_IRQ, 0); 457f90db107SNeil Armstrong 458f90db107SNeil Armstrong irq = platform_get_irq(pdev, 0); 459f90db107SNeil Armstrong ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, 460f90db107SNeil Armstrong dwc3_meson_g12a_irq_thread, 461f90db107SNeil Armstrong IRQF_ONESHOT, pdev->name, priv); 462f90db107SNeil Armstrong if (ret) 463f90db107SNeil Armstrong return ret; 464f90db107SNeil Armstrong } 465f90db107SNeil Armstrong 466c9999337SNeil Armstrong /* Setup OTG mode corresponding to the ID pin */ 467c9999337SNeil Armstrong if (priv->otg_mode == USB_DR_MODE_OTG) { 468c9999337SNeil Armstrong otg_id = dwc3_meson_g12a_get_id(priv); 469c9999337SNeil Armstrong if (otg_id != priv->otg_phy_mode) { 470c9999337SNeil Armstrong if (dwc3_meson_g12a_otg_mode_set(priv, otg_id)) 471c9999337SNeil Armstrong dev_warn(dev, "Failed to switch OTG mode\n"); 472c9999337SNeil Armstrong } 473c9999337SNeil Armstrong } 474c9999337SNeil Armstrong 475c9999337SNeil Armstrong /* Setup role switcher */ 476c9999337SNeil Armstrong priv->switch_desc.usb2_port = dwc3_meson_g12_find_child(dev, 477c9999337SNeil Armstrong "snps,dwc3"); 478c9999337SNeil Armstrong priv->switch_desc.udc = dwc3_meson_g12_find_child(dev, "snps,dwc2"); 479c9999337SNeil Armstrong priv->switch_desc.allow_userspace_control = true; 480c9999337SNeil Armstrong priv->switch_desc.set = dwc3_meson_g12a_role_set; 481c9999337SNeil Armstrong priv->switch_desc.get = dwc3_meson_g12a_role_get; 482bce3052fSHeikki Krogerus priv->switch_desc.driver_data = priv; 483c9999337SNeil Armstrong 484c9999337SNeil Armstrong priv->role_switch = usb_role_switch_register(dev, &priv->switch_desc); 485c9999337SNeil Armstrong if (IS_ERR(priv->role_switch)) 486c9999337SNeil Armstrong dev_warn(dev, "Unable to register Role Switch\n"); 487c9999337SNeil Armstrong 488238d7602SNathan Chancellor return 0; 4891e355f21SHanjie Lin } 4901e355f21SHanjie Lin 491013af227SNeil Armstrong static int dwc3_meson_g12a_setup_regmaps(struct dwc3_meson_g12a *priv, 492013af227SNeil Armstrong void __iomem *base) 493013af227SNeil Armstrong { 494013af227SNeil Armstrong int i; 495013af227SNeil Armstrong 496013af227SNeil Armstrong priv->usb_glue_regmap = devm_regmap_init_mmio(priv->dev, 497013af227SNeil Armstrong base + G12A_GLUE_OFFSET, 498013af227SNeil Armstrong &phy_meson_g12a_usb_glue_regmap_conf); 499013af227SNeil Armstrong if (IS_ERR(priv->usb_glue_regmap)) 500013af227SNeil Armstrong return PTR_ERR(priv->usb_glue_regmap); 501013af227SNeil Armstrong 502013af227SNeil Armstrong /* Create a regmap for each USB2 PHY control register set */ 503013af227SNeil Armstrong for (i = 0; i < priv->usb2_ports; i++) { 504013af227SNeil Armstrong struct regmap_config u2p_regmap_config = { 505013af227SNeil Armstrong .reg_bits = 8, 506013af227SNeil Armstrong .val_bits = 32, 507013af227SNeil Armstrong .reg_stride = 4, 508013af227SNeil Armstrong .max_register = U2P_R1, 509013af227SNeil Armstrong }; 510013af227SNeil Armstrong 511013af227SNeil Armstrong u2p_regmap_config.name = devm_kasprintf(priv->dev, GFP_KERNEL, 512013af227SNeil Armstrong "u2p-%d", i); 513013af227SNeil Armstrong if (!u2p_regmap_config.name) 514013af227SNeil Armstrong return -ENOMEM; 515013af227SNeil Armstrong 516013af227SNeil Armstrong priv->u2p_regmap[i] = devm_regmap_init_mmio(priv->dev, 517013af227SNeil Armstrong base + (i * U2P_REG_SIZE), 518013af227SNeil Armstrong &u2p_regmap_config); 519013af227SNeil Armstrong if (IS_ERR(priv->u2p_regmap[i])) 520013af227SNeil Armstrong return PTR_ERR(priv->u2p_regmap[i]); 521013af227SNeil Armstrong } 522013af227SNeil Armstrong 523013af227SNeil Armstrong return 0; 524013af227SNeil Armstrong } 525013af227SNeil Armstrong 5261e355f21SHanjie Lin static int dwc3_meson_g12a_probe(struct platform_device *pdev) 5271e355f21SHanjie Lin { 5281e355f21SHanjie Lin struct dwc3_meson_g12a *priv; 5291e355f21SHanjie Lin struct device *dev = &pdev->dev; 5301e355f21SHanjie Lin struct device_node *np = dev->of_node; 5311e355f21SHanjie Lin void __iomem *base; 5321e355f21SHanjie Lin int ret, i; 5331e355f21SHanjie Lin 5341e355f21SHanjie Lin priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 5351e355f21SHanjie Lin if (!priv) 5361e355f21SHanjie Lin return -ENOMEM; 5371e355f21SHanjie Lin 5381e355f21SHanjie Lin base = devm_platform_ioremap_resource(pdev, 0); 5391e355f21SHanjie Lin if (IS_ERR(base)) 5401e355f21SHanjie Lin return PTR_ERR(base); 5411e355f21SHanjie Lin 542013af227SNeil Armstrong priv->drvdata = of_device_get_match_data(&pdev->dev); 543013af227SNeil Armstrong 544013af227SNeil Armstrong priv->dev = dev; 545013af227SNeil Armstrong ret = priv->drvdata->setup_regmaps(priv, base); 546013af227SNeil Armstrong if (ret) 547013af227SNeil Armstrong return ret; 5481e355f21SHanjie Lin 5491e355f21SHanjie Lin priv->vbus = devm_regulator_get_optional(dev, "vbus"); 5501e355f21SHanjie Lin if (IS_ERR(priv->vbus)) { 5511e355f21SHanjie Lin if (PTR_ERR(priv->vbus) == -EPROBE_DEFER) 5521e355f21SHanjie Lin return PTR_ERR(priv->vbus); 5531e355f21SHanjie Lin priv->vbus = NULL; 5541e355f21SHanjie Lin } 5551e355f21SHanjie Lin 5561e355f21SHanjie Lin ret = devm_clk_bulk_get(dev, 5571e355f21SHanjie Lin priv->drvdata->num_clks, 5581e355f21SHanjie Lin priv->drvdata->clks); 5591e355f21SHanjie Lin if (ret) 5601e355f21SHanjie Lin return ret; 5611e355f21SHanjie Lin 5621e355f21SHanjie Lin ret = clk_bulk_prepare_enable(priv->drvdata->num_clks, 5631e355f21SHanjie Lin priv->drvdata->clks); 5641e355f21SHanjie Lin if (ret) 5651e355f21SHanjie Lin return ret; 5661e355f21SHanjie Lin 5671e355f21SHanjie Lin platform_set_drvdata(pdev, priv); 5681e355f21SHanjie Lin 5696d9fa35aSNeil Armstrong priv->reset = devm_reset_control_get_shared(dev, NULL); 5701e355f21SHanjie Lin if (IS_ERR(priv->reset)) { 5711e355f21SHanjie Lin ret = PTR_ERR(priv->reset); 5721e355f21SHanjie Lin dev_err(dev, "failed to get device reset, err=%d\n", ret); 5731e355f21SHanjie Lin return ret; 5741e355f21SHanjie Lin } 5751e355f21SHanjie Lin 5761e355f21SHanjie Lin ret = reset_control_reset(priv->reset); 5771e355f21SHanjie Lin if (ret) 5781e355f21SHanjie Lin goto err_disable_clks; 5791e355f21SHanjie Lin 5801e355f21SHanjie Lin ret = dwc3_meson_g12a_get_phys(priv); 5811e355f21SHanjie Lin if (ret) 5821e355f21SHanjie Lin goto err_disable_clks; 5831e355f21SHanjie Lin 5841e355f21SHanjie Lin if (priv->vbus) { 5851e355f21SHanjie Lin ret = regulator_enable(priv->vbus); 5861e355f21SHanjie Lin if (ret) 5871e355f21SHanjie Lin goto err_disable_clks; 5881e355f21SHanjie Lin } 5891e355f21SHanjie Lin 5901e355f21SHanjie Lin /* Get dr_mode */ 5911e355f21SHanjie Lin priv->otg_mode = usb_get_dr_mode(dev); 5921e355f21SHanjie Lin 5938f5bc1ecSNeil Armstrong ret = dwc3_meson_g12a_usb_init(priv); 5948f5bc1ecSNeil Armstrong if (ret) 5958f5bc1ecSNeil Armstrong goto err_disable_clks; 5961e355f21SHanjie Lin 5971e355f21SHanjie Lin /* Init PHYs */ 5981e355f21SHanjie Lin for (i = 0 ; i < PHY_COUNT ; ++i) { 5991e355f21SHanjie Lin ret = phy_init(priv->phys[i]); 6001e355f21SHanjie Lin if (ret) 6011e355f21SHanjie Lin goto err_disable_clks; 6021e355f21SHanjie Lin } 6031e355f21SHanjie Lin 6041e355f21SHanjie Lin /* Set PHY Power */ 6051e355f21SHanjie Lin for (i = 0 ; i < PHY_COUNT ; ++i) { 6061e355f21SHanjie Lin ret = phy_power_on(priv->phys[i]); 6071e355f21SHanjie Lin if (ret) 6081e355f21SHanjie Lin goto err_phys_exit; 6091e355f21SHanjie Lin } 6101e355f21SHanjie Lin 6111e355f21SHanjie Lin ret = of_platform_populate(np, NULL, NULL, dev); 6121e355f21SHanjie Lin if (ret) 6131e355f21SHanjie Lin goto err_phys_power; 6141e355f21SHanjie Lin 6151e355f21SHanjie Lin ret = dwc3_meson_g12a_otg_init(pdev, priv); 6161e355f21SHanjie Lin if (ret) 6171e355f21SHanjie Lin goto err_phys_power; 6181e355f21SHanjie Lin 619c9999337SNeil Armstrong pm_runtime_set_active(dev); 620c9999337SNeil Armstrong pm_runtime_enable(dev); 621c9999337SNeil Armstrong pm_runtime_get_sync(dev); 622c9999337SNeil Armstrong 623c9999337SNeil Armstrong return 0; 624c9999337SNeil Armstrong 625c9999337SNeil Armstrong err_phys_power: 626c9999337SNeil Armstrong for (i = 0 ; i < PHY_COUNT ; ++i) 627c9999337SNeil Armstrong phy_power_off(priv->phys[i]); 628c9999337SNeil Armstrong 629c9999337SNeil Armstrong err_phys_exit: 630c9999337SNeil Armstrong for (i = 0 ; i < PHY_COUNT ; ++i) 631c9999337SNeil Armstrong phy_exit(priv->phys[i]); 632c9999337SNeil Armstrong 6331e355f21SHanjie Lin err_disable_clks: 6341e355f21SHanjie Lin clk_bulk_disable_unprepare(priv->drvdata->num_clks, 6351e355f21SHanjie Lin priv->drvdata->clks); 6361e355f21SHanjie Lin 637c9999337SNeil Armstrong return ret; 638c9999337SNeil Armstrong } 639c9999337SNeil Armstrong 640c9999337SNeil Armstrong static int dwc3_meson_g12a_remove(struct platform_device *pdev) 641c9999337SNeil Armstrong { 642c9999337SNeil Armstrong struct dwc3_meson_g12a *priv = platform_get_drvdata(pdev); 643c9999337SNeil Armstrong struct device *dev = &pdev->dev; 644c9999337SNeil Armstrong int i; 645c9999337SNeil Armstrong 6461e355f21SHanjie Lin if (priv->drvdata->otg_switch_supported) 647c9999337SNeil Armstrong usb_role_switch_unregister(priv->role_switch); 648c9999337SNeil Armstrong 649c9999337SNeil Armstrong of_platform_depopulate(dev); 650c9999337SNeil Armstrong 651c9999337SNeil Armstrong for (i = 0 ; i < PHY_COUNT ; ++i) { 652c9999337SNeil Armstrong phy_power_off(priv->phys[i]); 653c9999337SNeil Armstrong phy_exit(priv->phys[i]); 654c9999337SNeil Armstrong } 655c9999337SNeil Armstrong 656c9999337SNeil Armstrong pm_runtime_disable(dev); 657c9999337SNeil Armstrong pm_runtime_put_noidle(dev); 658c9999337SNeil Armstrong pm_runtime_set_suspended(dev); 659c9999337SNeil Armstrong 6601e355f21SHanjie Lin clk_bulk_disable_unprepare(priv->drvdata->num_clks, 6611e355f21SHanjie Lin priv->drvdata->clks); 6621e355f21SHanjie Lin 663c9999337SNeil Armstrong return 0; 664c9999337SNeil Armstrong } 665c9999337SNeil Armstrong 666c9999337SNeil Armstrong static int __maybe_unused dwc3_meson_g12a_runtime_suspend(struct device *dev) 667c9999337SNeil Armstrong { 668c9999337SNeil Armstrong struct dwc3_meson_g12a *priv = dev_get_drvdata(dev); 669c9999337SNeil Armstrong 6701e355f21SHanjie Lin clk_bulk_disable_unprepare(priv->drvdata->num_clks, 6711e355f21SHanjie Lin priv->drvdata->clks); 672c9999337SNeil Armstrong 673c9999337SNeil Armstrong return 0; 674c9999337SNeil Armstrong } 675c9999337SNeil Armstrong 676c9999337SNeil Armstrong static int __maybe_unused dwc3_meson_g12a_runtime_resume(struct device *dev) 677c9999337SNeil Armstrong { 678c9999337SNeil Armstrong struct dwc3_meson_g12a *priv = dev_get_drvdata(dev); 679c9999337SNeil Armstrong 6801e355f21SHanjie Lin return clk_bulk_prepare_enable(priv->drvdata->num_clks, 6811e355f21SHanjie Lin priv->drvdata->clks); 682c9999337SNeil Armstrong } 683c9999337SNeil Armstrong 684c9999337SNeil Armstrong static int __maybe_unused dwc3_meson_g12a_suspend(struct device *dev) 685c9999337SNeil Armstrong { 686c9999337SNeil Armstrong struct dwc3_meson_g12a *priv = dev_get_drvdata(dev); 6871cf084d1SNeil Armstrong int i, ret; 6881cf084d1SNeil Armstrong 6891cf084d1SNeil Armstrong if (priv->vbus && priv->otg_phy_mode == PHY_MODE_USB_HOST) { 6901cf084d1SNeil Armstrong ret = regulator_disable(priv->vbus); 6911cf084d1SNeil Armstrong if (ret) 6921cf084d1SNeil Armstrong return ret; 6931cf084d1SNeil Armstrong } 694c9999337SNeil Armstrong 695c9999337SNeil Armstrong for (i = 0 ; i < PHY_COUNT ; ++i) { 696c9999337SNeil Armstrong phy_power_off(priv->phys[i]); 697c9999337SNeil Armstrong phy_exit(priv->phys[i]); 698c9999337SNeil Armstrong } 699c9999337SNeil Armstrong 700c9999337SNeil Armstrong reset_control_assert(priv->reset); 701c9999337SNeil Armstrong 702c9999337SNeil Armstrong return 0; 703c9999337SNeil Armstrong } 704c9999337SNeil Armstrong 705c9999337SNeil Armstrong static int __maybe_unused dwc3_meson_g12a_resume(struct device *dev) 706c9999337SNeil Armstrong { 707c9999337SNeil Armstrong struct dwc3_meson_g12a *priv = dev_get_drvdata(dev); 708c9999337SNeil Armstrong int i, ret; 709c9999337SNeil Armstrong 710c9999337SNeil Armstrong reset_control_deassert(priv->reset); 711c9999337SNeil Armstrong 712c9999337SNeil Armstrong dwc3_meson_g12a_usb_init(priv); 713c9999337SNeil Armstrong 714c9999337SNeil Armstrong /* Init PHYs */ 715c9999337SNeil Armstrong for (i = 0 ; i < PHY_COUNT ; ++i) { 716c9999337SNeil Armstrong ret = phy_init(priv->phys[i]); 717c9999337SNeil Armstrong if (ret) 718c9999337SNeil Armstrong return ret; 719c9999337SNeil Armstrong } 720c9999337SNeil Armstrong 721c9999337SNeil Armstrong /* Set PHY Power */ 722c9999337SNeil Armstrong for (i = 0 ; i < PHY_COUNT ; ++i) { 723c9999337SNeil Armstrong ret = phy_power_on(priv->phys[i]); 724c9999337SNeil Armstrong if (ret) 725c9999337SNeil Armstrong return ret; 726c9999337SNeil Armstrong } 727c9999337SNeil Armstrong 7281cf084d1SNeil Armstrong if (priv->vbus && priv->otg_phy_mode == PHY_MODE_USB_HOST) { 7291cf084d1SNeil Armstrong ret = regulator_enable(priv->vbus); 7301cf084d1SNeil Armstrong if (ret) 7311cf084d1SNeil Armstrong return ret; 7321cf084d1SNeil Armstrong } 7331cf084d1SNeil Armstrong 734c9999337SNeil Armstrong return 0; 735c9999337SNeil Armstrong } 736c9999337SNeil Armstrong 737c9999337SNeil Armstrong static const struct dev_pm_ops dwc3_meson_g12a_dev_pm_ops = { 738c9999337SNeil Armstrong SET_SYSTEM_SLEEP_PM_OPS(dwc3_meson_g12a_suspend, dwc3_meson_g12a_resume) 739c9999337SNeil Armstrong SET_RUNTIME_PM_OPS(dwc3_meson_g12a_runtime_suspend, 740c9999337SNeil Armstrong dwc3_meson_g12a_runtime_resume, NULL) 741c9999337SNeil Armstrong }; 742c9999337SNeil Armstrong 743c9999337SNeil Armstrong static const struct of_device_id dwc3_meson_g12a_match[] = { 7441e355f21SHanjie Lin { 7451e355f21SHanjie Lin .compatible = "amlogic,meson-g12a-usb-ctrl", 7461e355f21SHanjie Lin .data = &g12a_drvdata, 7471e355f21SHanjie Lin }, 7481e355f21SHanjie Lin { 7491e355f21SHanjie Lin .compatible = "amlogic,meson-a1-usb-ctrl", 7501e355f21SHanjie Lin .data = &a1_drvdata, 7511e355f21SHanjie Lin }, 752c9999337SNeil Armstrong { /* Sentinel */ } 753c9999337SNeil Armstrong }; 754c9999337SNeil Armstrong MODULE_DEVICE_TABLE(of, dwc3_meson_g12a_match); 755c9999337SNeil Armstrong 756c9999337SNeil Armstrong static struct platform_driver dwc3_meson_g12a_driver = { 757c9999337SNeil Armstrong .probe = dwc3_meson_g12a_probe, 758c9999337SNeil Armstrong .remove = dwc3_meson_g12a_remove, 759c9999337SNeil Armstrong .driver = { 760c9999337SNeil Armstrong .name = "dwc3-meson-g12a", 761c9999337SNeil Armstrong .of_match_table = dwc3_meson_g12a_match, 762c9999337SNeil Armstrong .pm = &dwc3_meson_g12a_dev_pm_ops, 763c9999337SNeil Armstrong }, 764c9999337SNeil Armstrong }; 765c9999337SNeil Armstrong 766c9999337SNeil Armstrong module_platform_driver(dwc3_meson_g12a_driver); 767c9999337SNeil Armstrong MODULE_LICENSE("GPL v2"); 768c9999337SNeil Armstrong MODULE_DESCRIPTION("Amlogic Meson G12A USB Glue Layer"); 769c9999337SNeil Armstrong MODULE_AUTHOR("Neil Armstrong <narmstrong@baylibre.com>"); 770