1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright 2012 Freescale Semiconductor, Inc. 4 */ 5 6 #include <linux/module.h> 7 #include <linux/of.h> 8 #include <linux/err.h> 9 #include <linux/io.h> 10 #include <linux/delay.h> 11 #include <linux/platform_device.h> 12 #include <linux/usb/otg.h> 13 14 #include "ci_hdrc_imx.h" 15 16 #define MX25_USB_PHY_CTRL_OFFSET 0x08 17 #define MX25_BM_EXTERNAL_VBUS_DIVIDER BIT(23) 18 19 #define MX25_EHCI_INTERFACE_SINGLE_UNI (2 << 0) 20 #define MX25_EHCI_INTERFACE_DIFF_UNI (0 << 0) 21 #define MX25_EHCI_INTERFACE_MASK (0xf) 22 23 #define MX25_OTG_SIC_SHIFT 29 24 #define MX25_OTG_SIC_MASK (0x3 << MX25_OTG_SIC_SHIFT) 25 #define MX25_OTG_PM_BIT BIT(24) 26 #define MX25_OTG_PP_BIT BIT(11) 27 #define MX25_OTG_OCPOL_BIT BIT(3) 28 29 #define MX25_H1_SIC_SHIFT 21 30 #define MX25_H1_SIC_MASK (0x3 << MX25_H1_SIC_SHIFT) 31 #define MX25_H1_PP_BIT BIT(18) 32 #define MX25_H1_PM_BIT BIT(16) 33 #define MX25_H1_IPPUE_UP_BIT BIT(7) 34 #define MX25_H1_IPPUE_DOWN_BIT BIT(6) 35 #define MX25_H1_TLL_BIT BIT(5) 36 #define MX25_H1_USBTE_BIT BIT(4) 37 #define MX25_H1_OCPOL_BIT BIT(2) 38 39 #define MX27_H1_PM_BIT BIT(8) 40 #define MX27_H2_PM_BIT BIT(16) 41 #define MX27_OTG_PM_BIT BIT(24) 42 43 #define MX53_USB_OTG_PHY_CTRL_0_OFFSET 0x08 44 #define MX53_USB_OTG_PHY_CTRL_1_OFFSET 0x0c 45 #define MX53_USB_CTRL_1_OFFSET 0x10 46 #define MX53_USB_CTRL_1_H2_XCVR_CLK_SEL_MASK (0x11 << 2) 47 #define MX53_USB_CTRL_1_H2_XCVR_CLK_SEL_ULPI BIT(2) 48 #define MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_MASK (0x11 << 6) 49 #define MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_ULPI BIT(6) 50 #define MX53_USB_UH2_CTRL_OFFSET 0x14 51 #define MX53_USB_UH3_CTRL_OFFSET 0x18 52 #define MX53_USB_CLKONOFF_CTRL_OFFSET 0x24 53 #define MX53_USB_CLKONOFF_CTRL_H2_INT60CKOFF BIT(21) 54 #define MX53_USB_CLKONOFF_CTRL_H3_INT60CKOFF BIT(22) 55 #define MX53_BM_OVER_CUR_DIS_H1 BIT(5) 56 #define MX53_BM_OVER_CUR_DIS_OTG BIT(8) 57 #define MX53_BM_OVER_CUR_DIS_UHx BIT(30) 58 #define MX53_USB_CTRL_1_UH2_ULPI_EN BIT(26) 59 #define MX53_USB_CTRL_1_UH3_ULPI_EN BIT(27) 60 #define MX53_USB_UHx_CTRL_WAKE_UP_EN BIT(7) 61 #define MX53_USB_UHx_CTRL_ULPI_INT_EN BIT(8) 62 #define MX53_USB_PHYCTRL1_PLLDIV_MASK 0x3 63 #define MX53_USB_PLL_DIV_24_MHZ 0x01 64 65 #define MX6_BM_NON_BURST_SETTING BIT(1) 66 #define MX6_BM_OVER_CUR_DIS BIT(7) 67 #define MX6_BM_OVER_CUR_POLARITY BIT(8) 68 #define MX6_BM_PWR_POLARITY BIT(9) 69 #define MX6_BM_WAKEUP_ENABLE BIT(10) 70 #define MX6_BM_UTMI_ON_CLOCK BIT(13) 71 #define MX6_BM_ID_WAKEUP BIT(16) 72 #define MX6_BM_VBUS_WAKEUP BIT(17) 73 #define MX6SX_BM_DPDM_WAKEUP_EN BIT(29) 74 #define MX6_BM_WAKEUP_INTR BIT(31) 75 76 #define MX6_USB_HSIC_CTRL_OFFSET 0x10 77 /* Send resume signal without 480Mhz PHY clock */ 78 #define MX6SX_BM_HSIC_AUTO_RESUME BIT(23) 79 /* set before portsc.suspendM = 1 */ 80 #define MX6_BM_HSIC_DEV_CONN BIT(21) 81 /* HSIC enable */ 82 #define MX6_BM_HSIC_EN BIT(12) 83 /* Force HSIC module 480M clock on, even when in Host is in suspend mode */ 84 #define MX6_BM_HSIC_CLK_ON BIT(11) 85 86 #define MX6_USB_OTG1_PHY_CTRL 0x18 87 /* For imx6dql, it is host-only controller, for later imx6, it is otg's */ 88 #define MX6_USB_OTG2_PHY_CTRL 0x1c 89 #define MX6SX_USB_VBUS_WAKEUP_SOURCE(v) (v << 8) 90 #define MX6SX_USB_VBUS_WAKEUP_SOURCE_VBUS MX6SX_USB_VBUS_WAKEUP_SOURCE(0) 91 #define MX6SX_USB_VBUS_WAKEUP_SOURCE_AVALID MX6SX_USB_VBUS_WAKEUP_SOURCE(1) 92 #define MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID MX6SX_USB_VBUS_WAKEUP_SOURCE(2) 93 #define MX6SX_USB_VBUS_WAKEUP_SOURCE_SESS_END MX6SX_USB_VBUS_WAKEUP_SOURCE(3) 94 95 #define VF610_OVER_CUR_DIS BIT(7) 96 97 #define MX7D_USBNC_USB_CTRL2 0x4 98 #define MX7D_USB_VBUS_WAKEUP_SOURCE_MASK 0x3 99 #define MX7D_USB_VBUS_WAKEUP_SOURCE(v) (v << 0) 100 #define MX7D_USB_VBUS_WAKEUP_SOURCE_VBUS MX7D_USB_VBUS_WAKEUP_SOURCE(0) 101 #define MX7D_USB_VBUS_WAKEUP_SOURCE_AVALID MX7D_USB_VBUS_WAKEUP_SOURCE(1) 102 #define MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID MX7D_USB_VBUS_WAKEUP_SOURCE(2) 103 #define MX7D_USB_VBUS_WAKEUP_SOURCE_SESS_END MX7D_USB_VBUS_WAKEUP_SOURCE(3) 104 #define MX7D_USBNC_AUTO_RESUME BIT(2) 105 /* The default DM/DP value is pull-down */ 106 #define MX7D_USBNC_USB_CTRL2_OPMODE(v) (v << 6) 107 #define MX7D_USBNC_USB_CTRL2_OPMODE_NON_DRIVING MX7D_USBNC_USB_CTRL2_OPMODE(1) 108 #define MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_MASK (BIT(7) | BIT(6)) 109 #define MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_EN BIT(8) 110 #define MX7D_USBNC_USB_CTRL2_DP_OVERRIDE_VAL BIT(12) 111 #define MX7D_USBNC_USB_CTRL2_DP_OVERRIDE_EN BIT(13) 112 #define MX7D_USBNC_USB_CTRL2_DM_OVERRIDE_VAL BIT(14) 113 #define MX7D_USBNC_USB_CTRL2_DM_OVERRIDE_EN BIT(15) 114 #define MX7D_USBNC_USB_CTRL2_DP_DM_MASK (BIT(12) | BIT(13) | \ 115 BIT(14) | BIT(15)) 116 117 #define MX7D_USB_OTG_PHY_CFG2_CHRG_CHRGSEL BIT(0) 118 #define MX7D_USB_OTG_PHY_CFG2_CHRG_VDATDETENB0 BIT(1) 119 #define MX7D_USB_OTG_PHY_CFG2_CHRG_VDATSRCENB0 BIT(2) 120 #define MX7D_USB_OTG_PHY_CFG2_CHRG_DCDENB BIT(3) 121 #define MX7D_USB_OTG_PHY_CFG2_DRVVBUS0 BIT(16) 122 123 #define MX7D_USB_OTG_PHY_CFG2 0x34 124 125 #define MX7D_USB_OTG_PHY_STATUS 0x3c 126 #define MX7D_USB_OTG_PHY_STATUS_LINE_STATE0 BIT(0) 127 #define MX7D_USB_OTG_PHY_STATUS_LINE_STATE1 BIT(1) 128 #define MX7D_USB_OTG_PHY_STATUS_VBUS_VLD BIT(3) 129 #define MX7D_USB_OTG_PHY_STATUS_CHRGDET BIT(29) 130 131 #define MX7D_USB_OTG_PHY_CFG1 0x30 132 #define TXPREEMPAMPTUNE0_BIT 28 133 #define TXPREEMPAMPTUNE0_MASK (3 << 28) 134 #define TXVREFTUNE0_BIT 20 135 #define TXVREFTUNE0_MASK (0xf << 20) 136 137 #define MX6_USB_OTG_WAKEUP_BITS (MX6_BM_WAKEUP_ENABLE | MX6_BM_VBUS_WAKEUP | \ 138 MX6_BM_ID_WAKEUP | MX6SX_BM_DPDM_WAKEUP_EN) 139 140 struct usbmisc_ops { 141 /* It's called once when probe a usb device */ 142 int (*init)(struct imx_usbmisc_data *data); 143 /* It's called once after adding a usb device */ 144 int (*post)(struct imx_usbmisc_data *data); 145 /* It's called when we need to enable/disable usb wakeup */ 146 int (*set_wakeup)(struct imx_usbmisc_data *data, bool enabled); 147 /* It's called before setting portsc.suspendM */ 148 int (*hsic_set_connect)(struct imx_usbmisc_data *data); 149 /* It's called during suspend/resume */ 150 int (*hsic_set_clk)(struct imx_usbmisc_data *data, bool enabled); 151 /* usb charger detection */ 152 int (*charger_detection)(struct imx_usbmisc_data *data); 153 /* It's called when system resume from usb power lost */ 154 int (*power_lost_check)(struct imx_usbmisc_data *data); 155 void (*vbus_comparator_on)(struct imx_usbmisc_data *data, bool on); 156 }; 157 158 struct imx_usbmisc { 159 void __iomem *base; 160 spinlock_t lock; 161 const struct usbmisc_ops *ops; 162 }; 163 164 static inline bool is_imx53_usbmisc(struct imx_usbmisc_data *data); 165 166 static int usbmisc_imx25_init(struct imx_usbmisc_data *data) 167 { 168 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); 169 unsigned long flags; 170 u32 val = 0; 171 172 if (data->index > 1) 173 return -EINVAL; 174 175 spin_lock_irqsave(&usbmisc->lock, flags); 176 switch (data->index) { 177 case 0: 178 val = readl(usbmisc->base); 179 val &= ~(MX25_OTG_SIC_MASK | MX25_OTG_PP_BIT); 180 val |= (MX25_EHCI_INTERFACE_DIFF_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_OTG_SIC_SHIFT; 181 val |= (MX25_OTG_PM_BIT | MX25_OTG_OCPOL_BIT); 182 183 /* 184 * If the polarity is not configured assume active high for 185 * historical reasons. 186 */ 187 if (data->oc_pol_configured && data->oc_pol_active_low) 188 val &= ~MX25_OTG_OCPOL_BIT; 189 190 writel(val, usbmisc->base); 191 break; 192 case 1: 193 val = readl(usbmisc->base); 194 val &= ~(MX25_H1_SIC_MASK | MX25_H1_PP_BIT | MX25_H1_IPPUE_UP_BIT); 195 val |= (MX25_EHCI_INTERFACE_SINGLE_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_H1_SIC_SHIFT; 196 val |= (MX25_H1_PM_BIT | MX25_H1_OCPOL_BIT | MX25_H1_TLL_BIT | 197 MX25_H1_USBTE_BIT | MX25_H1_IPPUE_DOWN_BIT); 198 199 /* 200 * If the polarity is not configured assume active high for 201 * historical reasons. 202 */ 203 if (data->oc_pol_configured && data->oc_pol_active_low) 204 val &= ~MX25_H1_OCPOL_BIT; 205 206 writel(val, usbmisc->base); 207 208 break; 209 } 210 spin_unlock_irqrestore(&usbmisc->lock, flags); 211 212 return 0; 213 } 214 215 static int usbmisc_imx25_post(struct imx_usbmisc_data *data) 216 { 217 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); 218 void __iomem *reg; 219 unsigned long flags; 220 u32 val; 221 222 if (data->index > 2) 223 return -EINVAL; 224 225 if (data->index) 226 return 0; 227 228 spin_lock_irqsave(&usbmisc->lock, flags); 229 reg = usbmisc->base + MX25_USB_PHY_CTRL_OFFSET; 230 val = readl(reg); 231 232 if (data->evdo) 233 val |= MX25_BM_EXTERNAL_VBUS_DIVIDER; 234 else 235 val &= ~MX25_BM_EXTERNAL_VBUS_DIVIDER; 236 237 writel(val, reg); 238 spin_unlock_irqrestore(&usbmisc->lock, flags); 239 usleep_range(5000, 10000); /* needed to stabilize voltage */ 240 241 return 0; 242 } 243 244 static int usbmisc_imx27_init(struct imx_usbmisc_data *data) 245 { 246 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); 247 unsigned long flags; 248 u32 val; 249 250 switch (data->index) { 251 case 0: 252 val = MX27_OTG_PM_BIT; 253 break; 254 case 1: 255 val = MX27_H1_PM_BIT; 256 break; 257 case 2: 258 val = MX27_H2_PM_BIT; 259 break; 260 default: 261 return -EINVAL; 262 } 263 264 spin_lock_irqsave(&usbmisc->lock, flags); 265 if (data->disable_oc) 266 val = readl(usbmisc->base) | val; 267 else 268 val = readl(usbmisc->base) & ~val; 269 writel(val, usbmisc->base); 270 spin_unlock_irqrestore(&usbmisc->lock, flags); 271 272 return 0; 273 } 274 275 static int usbmisc_imx53_init(struct imx_usbmisc_data *data) 276 { 277 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); 278 void __iomem *reg = NULL; 279 unsigned long flags; 280 u32 val = 0; 281 282 if (data->index > 3) 283 return -EINVAL; 284 285 /* Select a 24 MHz reference clock for the PHY */ 286 val = readl(usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET); 287 val &= ~MX53_USB_PHYCTRL1_PLLDIV_MASK; 288 val |= MX53_USB_PLL_DIV_24_MHZ; 289 writel(val, usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET); 290 291 spin_lock_irqsave(&usbmisc->lock, flags); 292 293 switch (data->index) { 294 case 0: 295 if (data->disable_oc) { 296 reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET; 297 val = readl(reg) | MX53_BM_OVER_CUR_DIS_OTG; 298 writel(val, reg); 299 } 300 break; 301 case 1: 302 if (data->disable_oc) { 303 reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET; 304 val = readl(reg) | MX53_BM_OVER_CUR_DIS_H1; 305 writel(val, reg); 306 } 307 break; 308 case 2: 309 if (data->ulpi) { 310 /* set USBH2 into ULPI-mode. */ 311 reg = usbmisc->base + MX53_USB_CTRL_1_OFFSET; 312 val = readl(reg) | MX53_USB_CTRL_1_UH2_ULPI_EN; 313 /* select ULPI clock */ 314 val &= ~MX53_USB_CTRL_1_H2_XCVR_CLK_SEL_MASK; 315 val |= MX53_USB_CTRL_1_H2_XCVR_CLK_SEL_ULPI; 316 writel(val, reg); 317 /* Set interrupt wake up enable */ 318 reg = usbmisc->base + MX53_USB_UH2_CTRL_OFFSET; 319 val = readl(reg) | MX53_USB_UHx_CTRL_WAKE_UP_EN 320 | MX53_USB_UHx_CTRL_ULPI_INT_EN; 321 writel(val, reg); 322 if (is_imx53_usbmisc(data)) { 323 /* Disable internal 60Mhz clock */ 324 reg = usbmisc->base + 325 MX53_USB_CLKONOFF_CTRL_OFFSET; 326 val = readl(reg) | 327 MX53_USB_CLKONOFF_CTRL_H2_INT60CKOFF; 328 writel(val, reg); 329 } 330 331 } 332 if (data->disable_oc) { 333 reg = usbmisc->base + MX53_USB_UH2_CTRL_OFFSET; 334 val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx; 335 writel(val, reg); 336 } 337 break; 338 case 3: 339 if (data->ulpi) { 340 /* set USBH3 into ULPI-mode. */ 341 reg = usbmisc->base + MX53_USB_CTRL_1_OFFSET; 342 val = readl(reg) | MX53_USB_CTRL_1_UH3_ULPI_EN; 343 /* select ULPI clock */ 344 val &= ~MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_MASK; 345 val |= MX53_USB_CTRL_1_H3_XCVR_CLK_SEL_ULPI; 346 writel(val, reg); 347 /* Set interrupt wake up enable */ 348 reg = usbmisc->base + MX53_USB_UH3_CTRL_OFFSET; 349 val = readl(reg) | MX53_USB_UHx_CTRL_WAKE_UP_EN 350 | MX53_USB_UHx_CTRL_ULPI_INT_EN; 351 writel(val, reg); 352 353 if (is_imx53_usbmisc(data)) { 354 /* Disable internal 60Mhz clock */ 355 reg = usbmisc->base + 356 MX53_USB_CLKONOFF_CTRL_OFFSET; 357 val = readl(reg) | 358 MX53_USB_CLKONOFF_CTRL_H3_INT60CKOFF; 359 writel(val, reg); 360 } 361 } 362 if (data->disable_oc) { 363 reg = usbmisc->base + MX53_USB_UH3_CTRL_OFFSET; 364 val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx; 365 writel(val, reg); 366 } 367 break; 368 } 369 370 spin_unlock_irqrestore(&usbmisc->lock, flags); 371 372 return 0; 373 } 374 375 static u32 usbmisc_wakeup_setting(struct imx_usbmisc_data *data) 376 { 377 u32 wakeup_setting = MX6_USB_OTG_WAKEUP_BITS; 378 379 if (data->ext_id || data->available_role != USB_DR_MODE_OTG) 380 wakeup_setting &= ~MX6_BM_ID_WAKEUP; 381 382 if (data->ext_vbus || data->available_role == USB_DR_MODE_HOST) 383 wakeup_setting &= ~MX6_BM_VBUS_WAKEUP; 384 385 return wakeup_setting; 386 } 387 388 static int usbmisc_imx6q_set_wakeup 389 (struct imx_usbmisc_data *data, bool enabled) 390 { 391 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); 392 unsigned long flags; 393 u32 val; 394 int ret = 0; 395 396 if (data->index > 3) 397 return -EINVAL; 398 399 spin_lock_irqsave(&usbmisc->lock, flags); 400 val = readl(usbmisc->base + data->index * 4); 401 if (enabled) { 402 val &= ~MX6_USB_OTG_WAKEUP_BITS; 403 val |= usbmisc_wakeup_setting(data); 404 } else { 405 if (val & MX6_BM_WAKEUP_INTR) 406 pr_debug("wakeup int at ci_hdrc.%d\n", data->index); 407 val &= ~MX6_USB_OTG_WAKEUP_BITS; 408 } 409 writel(val, usbmisc->base + data->index * 4); 410 spin_unlock_irqrestore(&usbmisc->lock, flags); 411 412 return ret; 413 } 414 415 static int usbmisc_imx6q_init(struct imx_usbmisc_data *data) 416 { 417 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); 418 unsigned long flags; 419 u32 reg; 420 421 if (data->index > 3) 422 return -EINVAL; 423 424 spin_lock_irqsave(&usbmisc->lock, flags); 425 426 reg = readl(usbmisc->base + data->index * 4); 427 if (data->disable_oc) { 428 reg |= MX6_BM_OVER_CUR_DIS; 429 } else { 430 reg &= ~MX6_BM_OVER_CUR_DIS; 431 432 /* 433 * If the polarity is not configured keep it as setup by the 434 * bootloader. 435 */ 436 if (data->oc_pol_configured && data->oc_pol_active_low) 437 reg |= MX6_BM_OVER_CUR_POLARITY; 438 else if (data->oc_pol_configured) 439 reg &= ~MX6_BM_OVER_CUR_POLARITY; 440 } 441 /* If the polarity is not set keep it as setup by the bootlader */ 442 if (data->pwr_pol == 1) 443 reg |= MX6_BM_PWR_POLARITY; 444 writel(reg, usbmisc->base + data->index * 4); 445 446 /* SoC non-burst setting */ 447 reg = readl(usbmisc->base + data->index * 4); 448 writel(reg | MX6_BM_NON_BURST_SETTING, 449 usbmisc->base + data->index * 4); 450 451 /* For HSIC controller */ 452 if (data->hsic) { 453 reg = readl(usbmisc->base + data->index * 4); 454 writel(reg | MX6_BM_UTMI_ON_CLOCK, 455 usbmisc->base + data->index * 4); 456 reg = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET 457 + (data->index - 2) * 4); 458 reg |= MX6_BM_HSIC_EN | MX6_BM_HSIC_CLK_ON; 459 writel(reg, usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET 460 + (data->index - 2) * 4); 461 } 462 463 spin_unlock_irqrestore(&usbmisc->lock, flags); 464 465 usbmisc_imx6q_set_wakeup(data, false); 466 467 return 0; 468 } 469 470 static int usbmisc_imx6_hsic_get_reg_offset(struct imx_usbmisc_data *data) 471 { 472 int offset, ret = 0; 473 474 if (data->index == 2 || data->index == 3) { 475 offset = (data->index - 2) * 4; 476 } else if (data->index == 0) { 477 /* 478 * For SoCs like i.MX7D and later, each USB controller has 479 * its own non-core register region. For SoCs before i.MX7D, 480 * the first two USB controllers are non-HSIC controllers. 481 */ 482 offset = 0; 483 } else { 484 dev_err(data->dev, "index is error for usbmisc\n"); 485 ret = -EINVAL; 486 } 487 488 return ret ? ret : offset; 489 } 490 491 static int usbmisc_imx6_hsic_set_connect(struct imx_usbmisc_data *data) 492 { 493 unsigned long flags; 494 u32 val; 495 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); 496 int offset; 497 498 spin_lock_irqsave(&usbmisc->lock, flags); 499 offset = usbmisc_imx6_hsic_get_reg_offset(data); 500 if (offset < 0) { 501 spin_unlock_irqrestore(&usbmisc->lock, flags); 502 return offset; 503 } 504 505 val = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + offset); 506 if (!(val & MX6_BM_HSIC_DEV_CONN)) 507 writel(val | MX6_BM_HSIC_DEV_CONN, 508 usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + offset); 509 510 spin_unlock_irqrestore(&usbmisc->lock, flags); 511 512 return 0; 513 } 514 515 static int usbmisc_imx6_hsic_set_clk(struct imx_usbmisc_data *data, bool on) 516 { 517 unsigned long flags; 518 u32 val; 519 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); 520 int offset; 521 522 spin_lock_irqsave(&usbmisc->lock, flags); 523 offset = usbmisc_imx6_hsic_get_reg_offset(data); 524 if (offset < 0) { 525 spin_unlock_irqrestore(&usbmisc->lock, flags); 526 return offset; 527 } 528 529 val = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + offset); 530 val |= MX6_BM_HSIC_EN | MX6_BM_HSIC_CLK_ON; 531 if (on) 532 val |= MX6_BM_HSIC_CLK_ON; 533 else 534 val &= ~MX6_BM_HSIC_CLK_ON; 535 536 writel(val, usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET + offset); 537 spin_unlock_irqrestore(&usbmisc->lock, flags); 538 539 return 0; 540 } 541 542 543 static int usbmisc_imx6sx_init(struct imx_usbmisc_data *data) 544 { 545 void __iomem *reg = NULL; 546 unsigned long flags; 547 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); 548 u32 val; 549 550 usbmisc_imx6q_init(data); 551 552 if (data->index == 0 || data->index == 1) { 553 reg = usbmisc->base + MX6_USB_OTG1_PHY_CTRL + data->index * 4; 554 spin_lock_irqsave(&usbmisc->lock, flags); 555 /* Set vbus wakeup source as bvalid */ 556 val = readl(reg); 557 writel(val | MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID, reg); 558 /* 559 * Disable dp/dm wakeup in device mode when vbus is 560 * not there. 561 */ 562 val = readl(usbmisc->base + data->index * 4); 563 writel(val & ~MX6SX_BM_DPDM_WAKEUP_EN, 564 usbmisc->base + data->index * 4); 565 spin_unlock_irqrestore(&usbmisc->lock, flags); 566 } 567 568 /* For HSIC controller */ 569 if (data->hsic) { 570 val = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET); 571 val |= MX6SX_BM_HSIC_AUTO_RESUME; 572 writel(val, usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET); 573 } 574 575 return 0; 576 } 577 578 static int usbmisc_vf610_init(struct imx_usbmisc_data *data) 579 { 580 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); 581 u32 reg; 582 583 /* 584 * Vybrid only has one misc register set, but in two different 585 * areas. These is reflected in two instances of this driver. 586 */ 587 if (data->index >= 1) 588 return -EINVAL; 589 590 if (data->disable_oc) { 591 reg = readl(usbmisc->base); 592 writel(reg | VF610_OVER_CUR_DIS, usbmisc->base); 593 } 594 595 return 0; 596 } 597 598 static int usbmisc_imx7d_set_wakeup 599 (struct imx_usbmisc_data *data, bool enabled) 600 { 601 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); 602 unsigned long flags; 603 u32 val; 604 605 spin_lock_irqsave(&usbmisc->lock, flags); 606 val = readl(usbmisc->base); 607 if (enabled) { 608 val &= ~MX6_USB_OTG_WAKEUP_BITS; 609 val |= usbmisc_wakeup_setting(data); 610 writel(val, usbmisc->base); 611 } else { 612 if (val & MX6_BM_WAKEUP_INTR) 613 dev_dbg(data->dev, "wakeup int\n"); 614 writel(val & ~MX6_USB_OTG_WAKEUP_BITS, usbmisc->base); 615 } 616 spin_unlock_irqrestore(&usbmisc->lock, flags); 617 618 return 0; 619 } 620 621 static int usbmisc_imx7d_init(struct imx_usbmisc_data *data) 622 { 623 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); 624 unsigned long flags; 625 u32 reg; 626 627 if (data->index >= 1) 628 return -EINVAL; 629 630 spin_lock_irqsave(&usbmisc->lock, flags); 631 reg = readl(usbmisc->base); 632 if (data->disable_oc) { 633 reg |= MX6_BM_OVER_CUR_DIS; 634 } else { 635 reg &= ~MX6_BM_OVER_CUR_DIS; 636 637 /* 638 * If the polarity is not configured keep it as setup by the 639 * bootloader. 640 */ 641 if (data->oc_pol_configured && data->oc_pol_active_low) 642 reg |= MX6_BM_OVER_CUR_POLARITY; 643 else if (data->oc_pol_configured) 644 reg &= ~MX6_BM_OVER_CUR_POLARITY; 645 } 646 /* If the polarity is not set keep it as setup by the bootlader */ 647 if (data->pwr_pol == 1) 648 reg |= MX6_BM_PWR_POLARITY; 649 writel(reg, usbmisc->base); 650 651 /* SoC non-burst setting */ 652 reg = readl(usbmisc->base); 653 writel(reg | MX6_BM_NON_BURST_SETTING, usbmisc->base); 654 655 if (!data->hsic) { 656 reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2); 657 reg &= ~MX7D_USB_VBUS_WAKEUP_SOURCE_MASK; 658 writel(reg | MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID 659 | MX7D_USBNC_AUTO_RESUME, 660 usbmisc->base + MX7D_USBNC_USB_CTRL2); 661 /* PHY tuning for signal quality */ 662 reg = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG1); 663 if (data->emp_curr_control && data->emp_curr_control <= 664 (TXPREEMPAMPTUNE0_MASK >> TXPREEMPAMPTUNE0_BIT)) { 665 reg &= ~TXPREEMPAMPTUNE0_MASK; 666 reg |= (data->emp_curr_control << TXPREEMPAMPTUNE0_BIT); 667 } 668 669 if (data->dc_vol_level_adjust && data->dc_vol_level_adjust <= 670 (TXVREFTUNE0_MASK >> TXVREFTUNE0_BIT)) { 671 reg &= ~TXVREFTUNE0_MASK; 672 reg |= (data->dc_vol_level_adjust << TXVREFTUNE0_BIT); 673 } 674 675 writel(reg, usbmisc->base + MX7D_USB_OTG_PHY_CFG1); 676 } 677 678 spin_unlock_irqrestore(&usbmisc->lock, flags); 679 680 usbmisc_imx7d_set_wakeup(data, false); 681 682 return 0; 683 } 684 685 static int imx7d_charger_secondary_detection(struct imx_usbmisc_data *data) 686 { 687 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); 688 struct usb_phy *usb_phy = data->usb_phy; 689 int val; 690 unsigned long flags; 691 692 /* Clear VDATSRCENB0 to disable VDP_SRC and IDM_SNK required by BC 1.2 spec */ 693 spin_lock_irqsave(&usbmisc->lock, flags); 694 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2); 695 val &= ~MX7D_USB_OTG_PHY_CFG2_CHRG_VDATSRCENB0; 696 writel(val, usbmisc->base + MX7D_USB_OTG_PHY_CFG2); 697 spin_unlock_irqrestore(&usbmisc->lock, flags); 698 699 /* TVDMSRC_DIS */ 700 msleep(20); 701 702 /* VDM_SRC is connected to D- and IDP_SINK is connected to D+ */ 703 spin_lock_irqsave(&usbmisc->lock, flags); 704 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2); 705 writel(val | MX7D_USB_OTG_PHY_CFG2_CHRG_VDATSRCENB0 | 706 MX7D_USB_OTG_PHY_CFG2_CHRG_VDATDETENB0 | 707 MX7D_USB_OTG_PHY_CFG2_CHRG_CHRGSEL, 708 usbmisc->base + MX7D_USB_OTG_PHY_CFG2); 709 spin_unlock_irqrestore(&usbmisc->lock, flags); 710 711 /* TVDMSRC_ON */ 712 msleep(40); 713 714 /* 715 * Per BC 1.2, check voltage of D+: 716 * DCP: if greater than VDAT_REF; 717 * CDP: if less than VDAT_REF. 718 */ 719 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_STATUS); 720 if (val & MX7D_USB_OTG_PHY_STATUS_CHRGDET) { 721 dev_dbg(data->dev, "It is a dedicate charging port\n"); 722 usb_phy->chg_type = DCP_TYPE; 723 } else { 724 dev_dbg(data->dev, "It is a charging downstream port\n"); 725 usb_phy->chg_type = CDP_TYPE; 726 } 727 728 return 0; 729 } 730 731 static void imx7_disable_charger_detector(struct imx_usbmisc_data *data) 732 { 733 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); 734 unsigned long flags; 735 u32 val; 736 737 spin_lock_irqsave(&usbmisc->lock, flags); 738 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2); 739 val &= ~(MX7D_USB_OTG_PHY_CFG2_CHRG_DCDENB | 740 MX7D_USB_OTG_PHY_CFG2_CHRG_VDATSRCENB0 | 741 MX7D_USB_OTG_PHY_CFG2_CHRG_VDATDETENB0 | 742 MX7D_USB_OTG_PHY_CFG2_CHRG_CHRGSEL); 743 writel(val, usbmisc->base + MX7D_USB_OTG_PHY_CFG2); 744 745 /* Set OPMODE to be 2'b00 and disable its override */ 746 val = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2); 747 val &= ~MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_MASK; 748 writel(val, usbmisc->base + MX7D_USBNC_USB_CTRL2); 749 750 val = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2); 751 writel(val & ~MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_EN, 752 usbmisc->base + MX7D_USBNC_USB_CTRL2); 753 spin_unlock_irqrestore(&usbmisc->lock, flags); 754 } 755 756 static int imx7d_charger_data_contact_detect(struct imx_usbmisc_data *data) 757 { 758 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); 759 unsigned long flags; 760 u32 val; 761 int i, data_pin_contact_count = 0; 762 763 /* Enable Data Contact Detect (DCD) per the USB BC 1.2 */ 764 spin_lock_irqsave(&usbmisc->lock, flags); 765 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2); 766 writel(val | MX7D_USB_OTG_PHY_CFG2_CHRG_DCDENB, 767 usbmisc->base + MX7D_USB_OTG_PHY_CFG2); 768 spin_unlock_irqrestore(&usbmisc->lock, flags); 769 770 for (i = 0; i < 100; i = i + 1) { 771 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_STATUS); 772 if (!(val & MX7D_USB_OTG_PHY_STATUS_LINE_STATE0)) { 773 if (data_pin_contact_count++ > 5) 774 /* Data pin makes contact */ 775 break; 776 usleep_range(5000, 10000); 777 } else { 778 data_pin_contact_count = 0; 779 usleep_range(5000, 6000); 780 } 781 } 782 783 /* Disable DCD after finished data contact check */ 784 spin_lock_irqsave(&usbmisc->lock, flags); 785 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2); 786 writel(val & ~MX7D_USB_OTG_PHY_CFG2_CHRG_DCDENB, 787 usbmisc->base + MX7D_USB_OTG_PHY_CFG2); 788 spin_unlock_irqrestore(&usbmisc->lock, flags); 789 790 if (i == 100) { 791 dev_err(data->dev, 792 "VBUS is coming from a dedicated power supply.\n"); 793 return -ENXIO; 794 } 795 796 return 0; 797 } 798 799 static int imx7d_charger_primary_detection(struct imx_usbmisc_data *data) 800 { 801 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); 802 struct usb_phy *usb_phy = data->usb_phy; 803 unsigned long flags; 804 u32 val; 805 806 /* VDP_SRC is connected to D+ and IDM_SINK is connected to D- */ 807 spin_lock_irqsave(&usbmisc->lock, flags); 808 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2); 809 val &= ~MX7D_USB_OTG_PHY_CFG2_CHRG_CHRGSEL; 810 writel(val | MX7D_USB_OTG_PHY_CFG2_CHRG_VDATSRCENB0 | 811 MX7D_USB_OTG_PHY_CFG2_CHRG_VDATDETENB0, 812 usbmisc->base + MX7D_USB_OTG_PHY_CFG2); 813 spin_unlock_irqrestore(&usbmisc->lock, flags); 814 815 /* TVDPSRC_ON */ 816 msleep(40); 817 818 /* Check if D- is less than VDAT_REF to determine an SDP per BC 1.2 */ 819 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_STATUS); 820 if (!(val & MX7D_USB_OTG_PHY_STATUS_CHRGDET)) { 821 dev_dbg(data->dev, "It is a standard downstream port\n"); 822 usb_phy->chg_type = SDP_TYPE; 823 } 824 825 return 0; 826 } 827 828 /* 829 * Whole charger detection process: 830 * 1. OPMODE override to be non-driving 831 * 2. Data contact check 832 * 3. Primary detection 833 * 4. Secondary detection 834 * 5. Disable charger detection 835 */ 836 static int imx7d_charger_detection(struct imx_usbmisc_data *data) 837 { 838 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); 839 struct usb_phy *usb_phy = data->usb_phy; 840 unsigned long flags; 841 u32 val; 842 int ret; 843 844 /* Check if vbus is valid */ 845 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_STATUS); 846 if (!(val & MX7D_USB_OTG_PHY_STATUS_VBUS_VLD)) { 847 dev_err(data->dev, "vbus is error\n"); 848 return -EINVAL; 849 } 850 851 /* 852 * Keep OPMODE to be non-driving mode during the whole 853 * charger detection process. 854 */ 855 spin_lock_irqsave(&usbmisc->lock, flags); 856 val = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2); 857 val &= ~MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_MASK; 858 val |= MX7D_USBNC_USB_CTRL2_OPMODE_NON_DRIVING; 859 writel(val, usbmisc->base + MX7D_USBNC_USB_CTRL2); 860 861 val = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2); 862 writel(val | MX7D_USBNC_USB_CTRL2_OPMODE_OVERRIDE_EN, 863 usbmisc->base + MX7D_USBNC_USB_CTRL2); 864 spin_unlock_irqrestore(&usbmisc->lock, flags); 865 866 ret = imx7d_charger_data_contact_detect(data); 867 if (ret) 868 return ret; 869 870 ret = imx7d_charger_primary_detection(data); 871 if (!ret && usb_phy->chg_type != SDP_TYPE) 872 ret = imx7d_charger_secondary_detection(data); 873 874 imx7_disable_charger_detector(data); 875 876 return ret; 877 } 878 879 static void usbmisc_imx7d_vbus_comparator_on(struct imx_usbmisc_data *data, 880 bool on) 881 { 882 unsigned long flags; 883 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); 884 u32 val; 885 886 if (data->hsic) 887 return; 888 889 spin_lock_irqsave(&usbmisc->lock, flags); 890 /* 891 * Disable VBUS valid comparator when in suspend mode, 892 * when OTG is disabled and DRVVBUS0 is asserted case 893 * the Bandgap circuitry and VBUS Valid comparator are 894 * still powered, even in Suspend or Sleep mode. 895 */ 896 val = readl(usbmisc->base + MX7D_USB_OTG_PHY_CFG2); 897 if (on) 898 val |= MX7D_USB_OTG_PHY_CFG2_DRVVBUS0; 899 else 900 val &= ~MX7D_USB_OTG_PHY_CFG2_DRVVBUS0; 901 902 writel(val, usbmisc->base + MX7D_USB_OTG_PHY_CFG2); 903 spin_unlock_irqrestore(&usbmisc->lock, flags); 904 } 905 906 static int usbmisc_imx7ulp_init(struct imx_usbmisc_data *data) 907 { 908 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); 909 unsigned long flags; 910 u32 reg; 911 912 if (data->index >= 1) 913 return -EINVAL; 914 915 spin_lock_irqsave(&usbmisc->lock, flags); 916 reg = readl(usbmisc->base); 917 if (data->disable_oc) { 918 reg |= MX6_BM_OVER_CUR_DIS; 919 } else { 920 reg &= ~MX6_BM_OVER_CUR_DIS; 921 922 /* 923 * If the polarity is not configured keep it as setup by the 924 * bootloader. 925 */ 926 if (data->oc_pol_configured && data->oc_pol_active_low) 927 reg |= MX6_BM_OVER_CUR_POLARITY; 928 else if (data->oc_pol_configured) 929 reg &= ~MX6_BM_OVER_CUR_POLARITY; 930 } 931 /* If the polarity is not set keep it as setup by the bootlader */ 932 if (data->pwr_pol == 1) 933 reg |= MX6_BM_PWR_POLARITY; 934 935 writel(reg, usbmisc->base); 936 937 /* SoC non-burst setting */ 938 reg = readl(usbmisc->base); 939 writel(reg | MX6_BM_NON_BURST_SETTING, usbmisc->base); 940 941 if (data->hsic) { 942 reg = readl(usbmisc->base); 943 writel(reg | MX6_BM_UTMI_ON_CLOCK, usbmisc->base); 944 945 reg = readl(usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET); 946 reg |= MX6_BM_HSIC_EN | MX6_BM_HSIC_CLK_ON; 947 writel(reg, usbmisc->base + MX6_USB_HSIC_CTRL_OFFSET); 948 949 /* 950 * For non-HSIC controller, the autoresume is enabled 951 * at MXS PHY driver (usbphy_ctrl bit18). 952 */ 953 reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2); 954 writel(reg | MX7D_USBNC_AUTO_RESUME, 955 usbmisc->base + MX7D_USBNC_USB_CTRL2); 956 } else { 957 reg = readl(usbmisc->base + MX7D_USBNC_USB_CTRL2); 958 reg &= ~MX7D_USB_VBUS_WAKEUP_SOURCE_MASK; 959 writel(reg | MX7D_USB_VBUS_WAKEUP_SOURCE_BVALID, 960 usbmisc->base + MX7D_USBNC_USB_CTRL2); 961 } 962 963 spin_unlock_irqrestore(&usbmisc->lock, flags); 964 965 usbmisc_imx7d_set_wakeup(data, false); 966 967 return 0; 968 } 969 970 static int usbmisc_imx7d_power_lost_check(struct imx_usbmisc_data *data) 971 { 972 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); 973 unsigned long flags; 974 u32 val; 975 976 spin_lock_irqsave(&usbmisc->lock, flags); 977 val = readl(usbmisc->base); 978 spin_unlock_irqrestore(&usbmisc->lock, flags); 979 /* 980 * Here use a power on reset value to judge 981 * if the controller experienced a power lost 982 */ 983 if (val == 0x30001000) 984 return 1; 985 else 986 return 0; 987 } 988 989 static int usbmisc_imx6sx_power_lost_check(struct imx_usbmisc_data *data) 990 { 991 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); 992 unsigned long flags; 993 u32 val; 994 995 spin_lock_irqsave(&usbmisc->lock, flags); 996 val = readl(usbmisc->base + data->index * 4); 997 spin_unlock_irqrestore(&usbmisc->lock, flags); 998 /* 999 * Here use a power on reset value to judge 1000 * if the controller experienced a power lost 1001 */ 1002 if (val == 0x30001000) 1003 return 1; 1004 else 1005 return 0; 1006 } 1007 1008 static const struct usbmisc_ops imx25_usbmisc_ops = { 1009 .init = usbmisc_imx25_init, 1010 .post = usbmisc_imx25_post, 1011 }; 1012 1013 static const struct usbmisc_ops imx27_usbmisc_ops = { 1014 .init = usbmisc_imx27_init, 1015 }; 1016 1017 static const struct usbmisc_ops imx51_usbmisc_ops = { 1018 .init = usbmisc_imx53_init, 1019 }; 1020 1021 static const struct usbmisc_ops imx53_usbmisc_ops = { 1022 .init = usbmisc_imx53_init, 1023 }; 1024 1025 static const struct usbmisc_ops imx6q_usbmisc_ops = { 1026 .set_wakeup = usbmisc_imx6q_set_wakeup, 1027 .init = usbmisc_imx6q_init, 1028 .hsic_set_connect = usbmisc_imx6_hsic_set_connect, 1029 .hsic_set_clk = usbmisc_imx6_hsic_set_clk, 1030 }; 1031 1032 static const struct usbmisc_ops vf610_usbmisc_ops = { 1033 .init = usbmisc_vf610_init, 1034 }; 1035 1036 static const struct usbmisc_ops imx6sx_usbmisc_ops = { 1037 .set_wakeup = usbmisc_imx6q_set_wakeup, 1038 .init = usbmisc_imx6sx_init, 1039 .hsic_set_connect = usbmisc_imx6_hsic_set_connect, 1040 .hsic_set_clk = usbmisc_imx6_hsic_set_clk, 1041 .power_lost_check = usbmisc_imx6sx_power_lost_check, 1042 }; 1043 1044 static const struct usbmisc_ops imx7d_usbmisc_ops = { 1045 .init = usbmisc_imx7d_init, 1046 .set_wakeup = usbmisc_imx7d_set_wakeup, 1047 .charger_detection = imx7d_charger_detection, 1048 .power_lost_check = usbmisc_imx7d_power_lost_check, 1049 .vbus_comparator_on = usbmisc_imx7d_vbus_comparator_on, 1050 }; 1051 1052 static const struct usbmisc_ops imx7ulp_usbmisc_ops = { 1053 .init = usbmisc_imx7ulp_init, 1054 .set_wakeup = usbmisc_imx7d_set_wakeup, 1055 .hsic_set_connect = usbmisc_imx6_hsic_set_connect, 1056 .hsic_set_clk = usbmisc_imx6_hsic_set_clk, 1057 .power_lost_check = usbmisc_imx7d_power_lost_check, 1058 }; 1059 1060 static inline bool is_imx53_usbmisc(struct imx_usbmisc_data *data) 1061 { 1062 struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); 1063 1064 return usbmisc->ops == &imx53_usbmisc_ops; 1065 } 1066 1067 int imx_usbmisc_init(struct imx_usbmisc_data *data) 1068 { 1069 struct imx_usbmisc *usbmisc; 1070 1071 if (!data) 1072 return 0; 1073 1074 usbmisc = dev_get_drvdata(data->dev); 1075 if (!usbmisc->ops->init) 1076 return 0; 1077 return usbmisc->ops->init(data); 1078 } 1079 EXPORT_SYMBOL_GPL(imx_usbmisc_init); 1080 1081 int imx_usbmisc_init_post(struct imx_usbmisc_data *data) 1082 { 1083 struct imx_usbmisc *usbmisc; 1084 int ret = 0; 1085 1086 if (!data) 1087 return 0; 1088 1089 usbmisc = dev_get_drvdata(data->dev); 1090 if (usbmisc->ops->post) 1091 ret = usbmisc->ops->post(data); 1092 if (ret) { 1093 dev_err(data->dev, "post init failed, ret=%d\n", ret); 1094 return ret; 1095 } 1096 1097 if (usbmisc->ops->set_wakeup) 1098 ret = usbmisc->ops->set_wakeup(data, false); 1099 if (ret) { 1100 dev_err(data->dev, "set_wakeup failed, ret=%d\n", ret); 1101 return ret; 1102 } 1103 1104 return 0; 1105 } 1106 EXPORT_SYMBOL_GPL(imx_usbmisc_init_post); 1107 1108 int imx_usbmisc_hsic_set_connect(struct imx_usbmisc_data *data) 1109 { 1110 struct imx_usbmisc *usbmisc; 1111 1112 if (!data) 1113 return 0; 1114 1115 usbmisc = dev_get_drvdata(data->dev); 1116 if (!usbmisc->ops->hsic_set_connect || !data->hsic) 1117 return 0; 1118 return usbmisc->ops->hsic_set_connect(data); 1119 } 1120 EXPORT_SYMBOL_GPL(imx_usbmisc_hsic_set_connect); 1121 1122 int imx_usbmisc_charger_detection(struct imx_usbmisc_data *data, bool connect) 1123 { 1124 struct imx_usbmisc *usbmisc; 1125 struct usb_phy *usb_phy; 1126 int ret = 0; 1127 1128 if (!data) 1129 return -EINVAL; 1130 1131 usbmisc = dev_get_drvdata(data->dev); 1132 usb_phy = data->usb_phy; 1133 if (!usbmisc->ops->charger_detection) 1134 return -ENOTSUPP; 1135 1136 if (connect) { 1137 ret = usbmisc->ops->charger_detection(data); 1138 if (ret) { 1139 dev_err(data->dev, 1140 "Error occurs during detection: %d\n", 1141 ret); 1142 usb_phy->chg_state = USB_CHARGER_ABSENT; 1143 } else { 1144 usb_phy->chg_state = USB_CHARGER_PRESENT; 1145 } 1146 } else { 1147 usb_phy->chg_state = USB_CHARGER_ABSENT; 1148 usb_phy->chg_type = UNKNOWN_TYPE; 1149 } 1150 return ret; 1151 } 1152 EXPORT_SYMBOL_GPL(imx_usbmisc_charger_detection); 1153 1154 int imx_usbmisc_suspend(struct imx_usbmisc_data *data, bool wakeup) 1155 { 1156 struct imx_usbmisc *usbmisc; 1157 int ret = 0; 1158 1159 if (!data) 1160 return 0; 1161 1162 usbmisc = dev_get_drvdata(data->dev); 1163 1164 if (usbmisc->ops->vbus_comparator_on) 1165 usbmisc->ops->vbus_comparator_on(data, false); 1166 1167 if (wakeup && usbmisc->ops->set_wakeup) 1168 ret = usbmisc->ops->set_wakeup(data, true); 1169 if (ret) { 1170 dev_err(data->dev, "set_wakeup failed, ret=%d\n", ret); 1171 return ret; 1172 } 1173 1174 if (usbmisc->ops->hsic_set_clk && data->hsic) 1175 ret = usbmisc->ops->hsic_set_clk(data, false); 1176 if (ret) { 1177 dev_err(data->dev, "set_wakeup failed, ret=%d\n", ret); 1178 return ret; 1179 } 1180 1181 return ret; 1182 } 1183 EXPORT_SYMBOL_GPL(imx_usbmisc_suspend); 1184 1185 int imx_usbmisc_resume(struct imx_usbmisc_data *data, bool wakeup) 1186 { 1187 struct imx_usbmisc *usbmisc; 1188 int ret = 0; 1189 1190 if (!data) 1191 return 0; 1192 1193 usbmisc = dev_get_drvdata(data->dev); 1194 1195 if (usbmisc->ops->power_lost_check) 1196 ret = usbmisc->ops->power_lost_check(data); 1197 if (ret > 0) { 1198 /* re-init if resume from power lost */ 1199 ret = imx_usbmisc_init(data); 1200 if (ret) { 1201 dev_err(data->dev, "re-init failed, ret=%d\n", ret); 1202 return ret; 1203 } 1204 } 1205 1206 if (wakeup && usbmisc->ops->set_wakeup) 1207 ret = usbmisc->ops->set_wakeup(data, false); 1208 if (ret) { 1209 dev_err(data->dev, "set_wakeup failed, ret=%d\n", ret); 1210 return ret; 1211 } 1212 1213 if (usbmisc->ops->hsic_set_clk && data->hsic) 1214 ret = usbmisc->ops->hsic_set_clk(data, true); 1215 if (ret) { 1216 dev_err(data->dev, "set_wakeup failed, ret=%d\n", ret); 1217 goto hsic_set_clk_fail; 1218 } 1219 1220 if (usbmisc->ops->vbus_comparator_on) 1221 usbmisc->ops->vbus_comparator_on(data, true); 1222 1223 return 0; 1224 1225 hsic_set_clk_fail: 1226 if (wakeup && usbmisc->ops->set_wakeup) 1227 usbmisc->ops->set_wakeup(data, true); 1228 return ret; 1229 } 1230 EXPORT_SYMBOL_GPL(imx_usbmisc_resume); 1231 1232 static const struct of_device_id usbmisc_imx_dt_ids[] = { 1233 { 1234 .compatible = "fsl,imx25-usbmisc", 1235 .data = &imx25_usbmisc_ops, 1236 }, 1237 { 1238 .compatible = "fsl,imx35-usbmisc", 1239 .data = &imx25_usbmisc_ops, 1240 }, 1241 { 1242 .compatible = "fsl,imx27-usbmisc", 1243 .data = &imx27_usbmisc_ops, 1244 }, 1245 { 1246 .compatible = "fsl,imx51-usbmisc", 1247 .data = &imx51_usbmisc_ops, 1248 }, 1249 { 1250 .compatible = "fsl,imx53-usbmisc", 1251 .data = &imx53_usbmisc_ops, 1252 }, 1253 { 1254 .compatible = "fsl,imx6q-usbmisc", 1255 .data = &imx6q_usbmisc_ops, 1256 }, 1257 { 1258 .compatible = "fsl,vf610-usbmisc", 1259 .data = &vf610_usbmisc_ops, 1260 }, 1261 { 1262 .compatible = "fsl,imx6sx-usbmisc", 1263 .data = &imx6sx_usbmisc_ops, 1264 }, 1265 { 1266 .compatible = "fsl,imx6ul-usbmisc", 1267 .data = &imx6sx_usbmisc_ops, 1268 }, 1269 { 1270 .compatible = "fsl,imx7d-usbmisc", 1271 .data = &imx7d_usbmisc_ops, 1272 }, 1273 { 1274 .compatible = "fsl,imx7ulp-usbmisc", 1275 .data = &imx7ulp_usbmisc_ops, 1276 }, 1277 { /* sentinel */ } 1278 }; 1279 MODULE_DEVICE_TABLE(of, usbmisc_imx_dt_ids); 1280 1281 static int usbmisc_imx_probe(struct platform_device *pdev) 1282 { 1283 struct imx_usbmisc *data; 1284 1285 data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); 1286 if (!data) 1287 return -ENOMEM; 1288 1289 spin_lock_init(&data->lock); 1290 1291 data->base = devm_platform_ioremap_resource(pdev, 0); 1292 if (IS_ERR(data->base)) 1293 return PTR_ERR(data->base); 1294 1295 data->ops = of_device_get_match_data(&pdev->dev); 1296 platform_set_drvdata(pdev, data); 1297 1298 return 0; 1299 } 1300 1301 static struct platform_driver usbmisc_imx_driver = { 1302 .probe = usbmisc_imx_probe, 1303 .driver = { 1304 .name = "usbmisc_imx", 1305 .of_match_table = usbmisc_imx_dt_ids, 1306 }, 1307 }; 1308 1309 module_platform_driver(usbmisc_imx_driver); 1310 1311 MODULE_ALIAS("platform:usbmisc-imx"); 1312 MODULE_LICENSE("GPL"); 1313 MODULE_DESCRIPTION("driver for imx usb non-core registers"); 1314 MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>"); 1315