Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 | /* * Copyright 2012 Freescale Semiconductor, Inc. * * The code contained herein is licensed under the GNU General Public * License. You may obtain a copy of the GNU General Public License * Version 2 or later at the following locations: * * http://www.opensource.org/licenses/gpl-license.html * http://www.gnu.org/copyleft/gpl.html */ #include <linux/module.h> #include <linux/of_platform.h> #include <linux/err.h> #include <linux/io.h> #include <linux/delay.h> #include "ci_hdrc_imx.h" #define MX25_USB_PHY_CTRL_OFFSET 0x08 #define MX25_BM_EXTERNAL_VBUS_DIVIDER BIT(23) #define MX25_EHCI_INTERFACE_SINGLE_UNI (2 << 0) #define MX25_EHCI_INTERFACE_DIFF_UNI (0 << 0) #define MX25_EHCI_INTERFACE_MASK (0xf) #define MX25_OTG_SIC_SHIFT 29 #define MX25_OTG_SIC_MASK (0x3 << MX25_OTG_SIC_SHIFT) #define MX25_OTG_PM_BIT BIT(24) #define MX25_OTG_PP_BIT BIT(11) #define MX25_OTG_OCPOL_BIT BIT(3) #define MX25_H1_SIC_SHIFT 21 #define MX25_H1_SIC_MASK (0x3 << MX25_H1_SIC_SHIFT) #define MX25_H1_PP_BIT BIT(18) #define MX25_H1_PM_BIT BIT(16) #define MX25_H1_IPPUE_UP_BIT BIT(7) #define MX25_H1_IPPUE_DOWN_BIT BIT(6) #define MX25_H1_TLL_BIT BIT(5) #define MX25_H1_USBTE_BIT BIT(4) #define MX25_H1_OCPOL_BIT BIT(2) #define MX27_H1_PM_BIT BIT(8) #define MX27_H2_PM_BIT BIT(16) #define MX27_OTG_PM_BIT BIT(24) #define MX53_USB_OTG_PHY_CTRL_0_OFFSET 0x08 #define MX53_USB_OTG_PHY_CTRL_1_OFFSET 0x0c #define MX53_USB_UH2_CTRL_OFFSET 0x14 #define MX53_USB_UH3_CTRL_OFFSET 0x18 #define MX53_BM_OVER_CUR_DIS_H1 BIT(5) #define MX53_BM_OVER_CUR_DIS_OTG BIT(8) #define MX53_BM_OVER_CUR_DIS_UHx BIT(30) #define MX53_USB_PHYCTRL1_PLLDIV_MASK 0x3 #define MX53_USB_PLL_DIV_24_MHZ 0x01 #define MX6_BM_OVER_CUR_DIS BIT(7) #define MX6_BM_WAKEUP_ENABLE BIT(10) #define MX6_BM_ID_WAKEUP BIT(16) #define MX6_BM_VBUS_WAKEUP BIT(17) #define MX6SX_BM_DPDM_WAKEUP_EN BIT(29) #define MX6_BM_WAKEUP_INTR BIT(31) #define MX6_USB_OTG1_PHY_CTRL 0x18 /* For imx6dql, it is host-only controller, for later imx6, it is otg's */ #define MX6_USB_OTG2_PHY_CTRL 0x1c #define MX6SX_USB_VBUS_WAKEUP_SOURCE(v) (v << 8) #define MX6SX_USB_VBUS_WAKEUP_SOURCE_VBUS MX6SX_USB_VBUS_WAKEUP_SOURCE(0) #define MX6SX_USB_VBUS_WAKEUP_SOURCE_AVALID MX6SX_USB_VBUS_WAKEUP_SOURCE(1) #define MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID MX6SX_USB_VBUS_WAKEUP_SOURCE(2) #define MX6SX_USB_VBUS_WAKEUP_SOURCE_SESS_END MX6SX_USB_VBUS_WAKEUP_SOURCE(3) #define VF610_OVER_CUR_DIS BIT(7) struct usbmisc_ops { /* It's called once when probe a usb device */ int (*init)(struct imx_usbmisc_data *data); /* It's called once after adding a usb device */ int (*post)(struct imx_usbmisc_data *data); /* It's called when we need to enable/disable usb wakeup */ int (*set_wakeup)(struct imx_usbmisc_data *data, bool enabled); }; struct imx_usbmisc { void __iomem *base; spinlock_t lock; const struct usbmisc_ops *ops; }; static int usbmisc_imx25_init(struct imx_usbmisc_data *data) { struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); unsigned long flags; u32 val = 0; if (data->index > 1) return -EINVAL; spin_lock_irqsave(&usbmisc->lock, flags); switch (data->index) { case 0: val = readl(usbmisc->base); val &= ~(MX25_OTG_SIC_MASK | MX25_OTG_PP_BIT); val |= (MX25_EHCI_INTERFACE_DIFF_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_OTG_SIC_SHIFT; val |= (MX25_OTG_PM_BIT | MX25_OTG_OCPOL_BIT); writel(val, usbmisc->base); break; case 1: val = readl(usbmisc->base); val &= ~(MX25_H1_SIC_MASK | MX25_H1_PP_BIT | MX25_H1_IPPUE_UP_BIT); val |= (MX25_EHCI_INTERFACE_SINGLE_UNI & MX25_EHCI_INTERFACE_MASK) << MX25_H1_SIC_SHIFT; val |= (MX25_H1_PM_BIT | MX25_H1_OCPOL_BIT | MX25_H1_TLL_BIT | MX25_H1_USBTE_BIT | MX25_H1_IPPUE_DOWN_BIT); writel(val, usbmisc->base); break; } spin_unlock_irqrestore(&usbmisc->lock, flags); return 0; } static int usbmisc_imx25_post(struct imx_usbmisc_data *data) { struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); void __iomem *reg; unsigned long flags; u32 val; if (data->index > 2) return -EINVAL; if (data->evdo) { spin_lock_irqsave(&usbmisc->lock, flags); reg = usbmisc->base + MX25_USB_PHY_CTRL_OFFSET; val = readl(reg); writel(val | MX25_BM_EXTERNAL_VBUS_DIVIDER, reg); spin_unlock_irqrestore(&usbmisc->lock, flags); usleep_range(5000, 10000); /* needed to stabilize voltage */ } return 0; } static int usbmisc_imx27_init(struct imx_usbmisc_data *data) { struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); unsigned long flags; u32 val; switch (data->index) { case 0: val = MX27_OTG_PM_BIT; break; case 1: val = MX27_H1_PM_BIT; break; case 2: val = MX27_H2_PM_BIT; break; default: return -EINVAL; }; spin_lock_irqsave(&usbmisc->lock, flags); if (data->disable_oc) val = readl(usbmisc->base) | val; else val = readl(usbmisc->base) & ~val; writel(val, usbmisc->base); spin_unlock_irqrestore(&usbmisc->lock, flags); return 0; } static int usbmisc_imx53_init(struct imx_usbmisc_data *data) { struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); void __iomem *reg = NULL; unsigned long flags; u32 val = 0; if (data->index > 3) return -EINVAL; /* Select a 24 MHz reference clock for the PHY */ val = readl(usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET); val &= ~MX53_USB_PHYCTRL1_PLLDIV_MASK; val |= MX53_USB_PLL_DIV_24_MHZ; writel(val, usbmisc->base + MX53_USB_OTG_PHY_CTRL_1_OFFSET); if (data->disable_oc) { spin_lock_irqsave(&usbmisc->lock, flags); switch (data->index) { case 0: reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET; val = readl(reg) | MX53_BM_OVER_CUR_DIS_OTG; break; case 1: reg = usbmisc->base + MX53_USB_OTG_PHY_CTRL_0_OFFSET; val = readl(reg) | MX53_BM_OVER_CUR_DIS_H1; break; case 2: reg = usbmisc->base + MX53_USB_UH2_CTRL_OFFSET; val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx; break; case 3: reg = usbmisc->base + MX53_USB_UH3_CTRL_OFFSET; val = readl(reg) | MX53_BM_OVER_CUR_DIS_UHx; break; } if (reg && val) writel(val, reg); spin_unlock_irqrestore(&usbmisc->lock, flags); } return 0; } static int usbmisc_imx6q_set_wakeup (struct imx_usbmisc_data *data, bool enabled) { struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); unsigned long flags; u32 val; u32 wakeup_setting = (MX6_BM_WAKEUP_ENABLE | MX6_BM_VBUS_WAKEUP | MX6_BM_ID_WAKEUP); int ret = 0; if (data->index > 3) return -EINVAL; spin_lock_irqsave(&usbmisc->lock, flags); val = readl(usbmisc->base + data->index * 4); if (enabled) { val |= wakeup_setting; writel(val, usbmisc->base + data->index * 4); } else { if (val & MX6_BM_WAKEUP_INTR) pr_debug("wakeup int at ci_hdrc.%d\n", data->index); val &= ~wakeup_setting; writel(val, usbmisc->base + data->index * 4); } spin_unlock_irqrestore(&usbmisc->lock, flags); return ret; } static int usbmisc_imx6q_init(struct imx_usbmisc_data *data) { struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); unsigned long flags; u32 reg; if (data->index > 3) return -EINVAL; if (data->disable_oc) { spin_lock_irqsave(&usbmisc->lock, flags); reg = readl(usbmisc->base + data->index * 4); writel(reg | MX6_BM_OVER_CUR_DIS, usbmisc->base + data->index * 4); spin_unlock_irqrestore(&usbmisc->lock, flags); } usbmisc_imx6q_set_wakeup(data, false); return 0; } static int usbmisc_imx6sx_init(struct imx_usbmisc_data *data) { void __iomem *reg = NULL; unsigned long flags; struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); u32 val; usbmisc_imx6q_init(data); if (data->index == 0 || data->index == 1) { reg = usbmisc->base + MX6_USB_OTG1_PHY_CTRL + data->index * 4; spin_lock_irqsave(&usbmisc->lock, flags); /* Set vbus wakeup source as bvalid */ val = readl(reg); writel(val | MX6SX_USB_VBUS_WAKEUP_SOURCE_BVALID, reg); /* * Disable dp/dm wakeup in device mode when vbus is * not there. */ val = readl(usbmisc->base + data->index * 4); writel(val & ~MX6SX_BM_DPDM_WAKEUP_EN, usbmisc->base + data->index * 4); spin_unlock_irqrestore(&usbmisc->lock, flags); } return 0; } static int usbmisc_vf610_init(struct imx_usbmisc_data *data) { struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev); u32 reg; /* * Vybrid only has one misc register set, but in two different * areas. These is reflected in two instances of this driver. */ if (data->index >= 1) return -EINVAL; if (data->disable_oc) { reg = readl(usbmisc->base); writel(reg | VF610_OVER_CUR_DIS, usbmisc->base); } return 0; } static const struct usbmisc_ops imx25_usbmisc_ops = { .init = usbmisc_imx25_init, .post = usbmisc_imx25_post, }; static const struct usbmisc_ops imx27_usbmisc_ops = { .init = usbmisc_imx27_init, }; static const struct usbmisc_ops imx53_usbmisc_ops = { .init = usbmisc_imx53_init, }; static const struct usbmisc_ops imx6q_usbmisc_ops = { .set_wakeup = usbmisc_imx6q_set_wakeup, .init = usbmisc_imx6q_init, }; static const struct usbmisc_ops vf610_usbmisc_ops = { .init = usbmisc_vf610_init, }; static const struct usbmisc_ops imx6sx_usbmisc_ops = { .set_wakeup = usbmisc_imx6q_set_wakeup, .init = usbmisc_imx6sx_init, }; int imx_usbmisc_init(struct imx_usbmisc_data *data) { struct imx_usbmisc *usbmisc; if (!data) return 0; usbmisc = dev_get_drvdata(data->dev); if (!usbmisc->ops->init) return 0; return usbmisc->ops->init(data); } EXPORT_SYMBOL_GPL(imx_usbmisc_init); int imx_usbmisc_init_post(struct imx_usbmisc_data *data) { struct imx_usbmisc *usbmisc; if (!data) return 0; usbmisc = dev_get_drvdata(data->dev); if (!usbmisc->ops->post) return 0; return usbmisc->ops->post(data); } EXPORT_SYMBOL_GPL(imx_usbmisc_init_post); int imx_usbmisc_set_wakeup(struct imx_usbmisc_data *data, bool enabled) { struct imx_usbmisc *usbmisc; if (!data) return 0; usbmisc = dev_get_drvdata(data->dev); if (!usbmisc->ops->set_wakeup) return 0; return usbmisc->ops->set_wakeup(data, enabled); } EXPORT_SYMBOL_GPL(imx_usbmisc_set_wakeup); static const struct of_device_id usbmisc_imx_dt_ids[] = { { .compatible = "fsl,imx25-usbmisc", .data = &imx25_usbmisc_ops, }, { .compatible = "fsl,imx35-usbmisc", .data = &imx25_usbmisc_ops, }, { .compatible = "fsl,imx27-usbmisc", .data = &imx27_usbmisc_ops, }, { .compatible = "fsl,imx51-usbmisc", .data = &imx53_usbmisc_ops, }, { .compatible = "fsl,imx53-usbmisc", .data = &imx53_usbmisc_ops, }, { .compatible = "fsl,imx6q-usbmisc", .data = &imx6q_usbmisc_ops, }, { .compatible = "fsl,vf610-usbmisc", .data = &vf610_usbmisc_ops, }, { .compatible = "fsl,imx6sx-usbmisc", .data = &imx6sx_usbmisc_ops, }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, usbmisc_imx_dt_ids); static int usbmisc_imx_probe(struct platform_device *pdev) { struct resource *res; struct imx_usbmisc *data; struct of_device_id *tmp_dev; data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); if (!data) return -ENOMEM; spin_lock_init(&data->lock); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); data->base = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(data->base)) return PTR_ERR(data->base); tmp_dev = (struct of_device_id *) of_match_device(usbmisc_imx_dt_ids, &pdev->dev); data->ops = (const struct usbmisc_ops *)tmp_dev->data; platform_set_drvdata(pdev, data); return 0; } static int usbmisc_imx_remove(struct platform_device *pdev) { return 0; } static struct platform_driver usbmisc_imx_driver = { .probe = usbmisc_imx_probe, .remove = usbmisc_imx_remove, .driver = { .name = "usbmisc_imx", .of_match_table = usbmisc_imx_dt_ids, }, }; module_platform_driver(usbmisc_imx_driver); MODULE_ALIAS("platform:usbmisc-imx"); MODULE_LICENSE("GPL v2"); MODULE_DESCRIPTION("driver for imx usb non-core registers"); MODULE_AUTHOR("Richard Zhao <richard.zhao@freescale.com>"); |