Tony Lindgren | dd0cdd8 | 2010-07-05 16:31:30 +0300 | [diff] [blame] | 1 | /* |
| 2 | * Platform level USB initialization for FS USB OTG controller on omap1 and 24xx |
| 3 | * |
| 4 | * Copyright (C) 2004 Texas Instruments, Inc. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | |
| 21 | #include <linux/module.h> |
| 22 | #include <linux/kernel.h> |
| 23 | #include <linux/init.h> |
| 24 | #include <linux/platform_device.h> |
| 25 | #include <linux/io.h> |
| 26 | |
| 27 | #include <asm/irq.h> |
| 28 | |
Tony Lindgren | 70c494c | 2012-09-19 10:46:56 -0700 | [diff] [blame] | 29 | #include <mach/mux.h> |
Tony Lindgren | b924b20 | 2012-06-04 00:56:15 -0700 | [diff] [blame] | 30 | |
| 31 | #include <mach/usb.h> |
Tony Lindgren | dd0cdd8 | 2010-07-05 16:31:30 +0300 | [diff] [blame] | 32 | |
Paul Walmsley | d3645d3 | 2012-04-13 06:34:27 -0600 | [diff] [blame] | 33 | #include "common.h" |
| 34 | |
Tony Lindgren | dd0cdd8 | 2010-07-05 16:31:30 +0300 | [diff] [blame] | 35 | /* These routines should handle the standard chip-specific modes |
| 36 | * for usb0/1/2 ports, covering basic mux and transceiver setup. |
| 37 | * |
| 38 | * Some board-*.c files will need to set up additional mux options, |
| 39 | * like for suspend handling, vbus sensing, GPIOs, and the D+ pullup. |
| 40 | */ |
| 41 | |
| 42 | /* TESTED ON: |
| 43 | * - 1611B H2 (with usb1 mini-AB) using standard Mini-B or OTG cables |
| 44 | * - 5912 OSK OHCI (with usb0 standard-A), standard A-to-B cables |
| 45 | * - 5912 OSK UDC, with *nonstandard* A-to-A cable |
| 46 | * - 1510 Innovator UDC with bundled usb0 cable |
| 47 | * - 1510 Innovator OHCI with bundled usb1/usb2 cable |
| 48 | * - 1510 Innovator OHCI with custom usb0 cable, feeding 5V VBUS |
| 49 | * - 1710 custom development board using alternate pin group |
| 50 | * - 1710 H3 (with usb1 mini-AB) using standard Mini-B or OTG cables |
| 51 | */ |
| 52 | |
| 53 | #define INT_USB_IRQ_GEN IH2_BASE + 20 |
| 54 | #define INT_USB_IRQ_NISO IH2_BASE + 30 |
| 55 | #define INT_USB_IRQ_ISO IH2_BASE + 29 |
| 56 | #define INT_USB_IRQ_HGEN INT_USB_HHC_1 |
| 57 | #define INT_USB_IRQ_OTG IH2_BASE + 8 |
| 58 | |
Tony Lindgren | b924b20 | 2012-06-04 00:56:15 -0700 | [diff] [blame] | 59 | #ifdef CONFIG_ARCH_OMAP_OTG |
| 60 | |
| 61 | void __init |
| 62 | omap_otg_init(struct omap_usb_config *config) |
| 63 | { |
| 64 | u32 syscon; |
| 65 | int alt_pingroup = 0; |
| 66 | |
| 67 | /* NOTE: no bus or clock setup (yet?) */ |
| 68 | |
| 69 | syscon = omap_readl(OTG_SYSCON_1) & 0xffff; |
| 70 | if (!(syscon & OTG_RESET_DONE)) |
| 71 | pr_debug("USB resets not complete?\n"); |
| 72 | |
| 73 | //omap_writew(0, OTG_IRQ_EN); |
| 74 | |
| 75 | /* pin muxing and transceiver pinouts */ |
| 76 | if (config->pins[0] > 2) /* alt pingroup 2 */ |
| 77 | alt_pingroup = 1; |
| 78 | syscon |= config->usb0_init(config->pins[0], is_usb0_device(config)); |
| 79 | syscon |= config->usb1_init(config->pins[1]); |
| 80 | syscon |= config->usb2_init(config->pins[2], alt_pingroup); |
| 81 | pr_debug("OTG_SYSCON_1 = %08x\n", omap_readl(OTG_SYSCON_1)); |
| 82 | omap_writel(syscon, OTG_SYSCON_1); |
| 83 | |
| 84 | syscon = config->hmc_mode; |
| 85 | syscon |= USBX_SYNCHRO | (4 << 16) /* B_ASE0_BRST */; |
| 86 | #ifdef CONFIG_USB_OTG |
| 87 | if (config->otg) |
| 88 | syscon |= OTG_EN; |
| 89 | #endif |
| 90 | if (cpu_class_is_omap1()) |
| 91 | pr_debug("USB_TRANSCEIVER_CTRL = %03x\n", |
| 92 | omap_readl(USB_TRANSCEIVER_CTRL)); |
| 93 | pr_debug("OTG_SYSCON_2 = %08x\n", omap_readl(OTG_SYSCON_2)); |
| 94 | omap_writel(syscon, OTG_SYSCON_2); |
| 95 | |
| 96 | printk("USB: hmc %d", config->hmc_mode); |
| 97 | if (!alt_pingroup) |
| 98 | printk(", usb2 alt %d wires", config->pins[2]); |
| 99 | else if (config->pins[0]) |
| 100 | printk(", usb0 %d wires%s", config->pins[0], |
| 101 | is_usb0_device(config) ? " (dev)" : ""); |
| 102 | if (config->pins[1]) |
| 103 | printk(", usb1 %d wires", config->pins[1]); |
| 104 | if (!alt_pingroup && config->pins[2]) |
| 105 | printk(", usb2 %d wires", config->pins[2]); |
| 106 | if (config->otg) |
| 107 | printk(", Mini-AB on usb%d", config->otg - 1); |
| 108 | printk("\n"); |
| 109 | |
| 110 | if (cpu_class_is_omap1()) { |
| 111 | u16 w; |
| 112 | |
| 113 | /* leave USB clocks/controllers off until needed */ |
| 114 | w = omap_readw(ULPD_SOFT_REQ); |
| 115 | w &= ~SOFT_USB_CLK_REQ; |
| 116 | omap_writew(w, ULPD_SOFT_REQ); |
| 117 | |
| 118 | w = omap_readw(ULPD_CLOCK_CTRL); |
| 119 | w &= ~USB_MCLK_EN; |
| 120 | w |= DIS_USB_PVCI_CLK; |
| 121 | omap_writew(w, ULPD_CLOCK_CTRL); |
| 122 | } |
| 123 | syscon = omap_readl(OTG_SYSCON_1); |
| 124 | syscon |= HST_IDLE_EN|DEV_IDLE_EN|OTG_IDLE_EN; |
| 125 | |
| 126 | #ifdef CONFIG_USB_GADGET_OMAP |
| 127 | if (config->otg || config->register_dev) { |
| 128 | struct platform_device *udc_device = config->udc_device; |
| 129 | int status; |
| 130 | |
| 131 | syscon &= ~DEV_IDLE_EN; |
| 132 | udc_device->dev.platform_data = config; |
| 133 | status = platform_device_register(udc_device); |
| 134 | if (status) |
| 135 | pr_debug("can't register UDC device, %d\n", status); |
| 136 | } |
| 137 | #endif |
| 138 | |
| 139 | #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) |
| 140 | if (config->otg || config->register_host) { |
| 141 | struct platform_device *ohci_device = config->ohci_device; |
| 142 | int status; |
| 143 | |
| 144 | syscon &= ~HST_IDLE_EN; |
| 145 | ohci_device->dev.platform_data = config; |
| 146 | status = platform_device_register(ohci_device); |
| 147 | if (status) |
| 148 | pr_debug("can't register OHCI device, %d\n", status); |
| 149 | } |
| 150 | #endif |
| 151 | |
| 152 | #ifdef CONFIG_USB_OTG |
| 153 | if (config->otg) { |
| 154 | struct platform_device *otg_device = config->otg_device; |
| 155 | int status; |
| 156 | |
| 157 | syscon &= ~OTG_IDLE_EN; |
| 158 | otg_device->dev.platform_data = config; |
| 159 | status = platform_device_register(otg_device); |
| 160 | if (status) |
| 161 | pr_debug("can't register OTG device, %d\n", status); |
| 162 | } |
| 163 | #endif |
| 164 | pr_debug("OTG_SYSCON_1 = %08x\n", omap_readl(OTG_SYSCON_1)); |
| 165 | omap_writel(syscon, OTG_SYSCON_1); |
| 166 | } |
| 167 | |
| 168 | #else |
| 169 | void omap_otg_init(struct omap_usb_config *config) {} |
| 170 | #endif |
| 171 | |
Tony Lindgren | dd0cdd8 | 2010-07-05 16:31:30 +0300 | [diff] [blame] | 172 | #ifdef CONFIG_USB_GADGET_OMAP |
| 173 | |
| 174 | static struct resource udc_resources[] = { |
| 175 | /* order is significant! */ |
| 176 | { /* registers */ |
| 177 | .start = UDC_BASE, |
| 178 | .end = UDC_BASE + 0xff, |
| 179 | .flags = IORESOURCE_MEM, |
| 180 | }, { /* general IRQ */ |
| 181 | .start = INT_USB_IRQ_GEN, |
| 182 | .flags = IORESOURCE_IRQ, |
| 183 | }, { /* PIO IRQ */ |
| 184 | .start = INT_USB_IRQ_NISO, |
| 185 | .flags = IORESOURCE_IRQ, |
| 186 | }, { /* SOF IRQ */ |
| 187 | .start = INT_USB_IRQ_ISO, |
| 188 | .flags = IORESOURCE_IRQ, |
| 189 | }, |
| 190 | }; |
| 191 | |
| 192 | static u64 udc_dmamask = ~(u32)0; |
| 193 | |
| 194 | static struct platform_device udc_device = { |
| 195 | .name = "omap_udc", |
| 196 | .id = -1, |
| 197 | .dev = { |
| 198 | .dma_mask = &udc_dmamask, |
| 199 | .coherent_dma_mask = 0xffffffff, |
| 200 | }, |
| 201 | .num_resources = ARRAY_SIZE(udc_resources), |
| 202 | .resource = udc_resources, |
| 203 | }; |
| 204 | |
| 205 | static inline void udc_device_init(struct omap_usb_config *pdata) |
| 206 | { |
| 207 | /* IRQ numbers for omap7xx */ |
| 208 | if(cpu_is_omap7xx()) { |
| 209 | udc_resources[1].start = INT_7XX_USB_GENI; |
| 210 | udc_resources[2].start = INT_7XX_USB_NON_ISO; |
| 211 | udc_resources[3].start = INT_7XX_USB_ISO; |
| 212 | } |
| 213 | pdata->udc_device = &udc_device; |
| 214 | } |
| 215 | |
| 216 | #else |
| 217 | |
| 218 | static inline void udc_device_init(struct omap_usb_config *pdata) |
| 219 | { |
| 220 | } |
| 221 | |
| 222 | #endif |
| 223 | |
| 224 | #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) |
| 225 | |
| 226 | /* The dmamask must be set for OHCI to work */ |
| 227 | static u64 ohci_dmamask = ~(u32)0; |
| 228 | |
| 229 | static struct resource ohci_resources[] = { |
| 230 | { |
| 231 | .start = OMAP_OHCI_BASE, |
| 232 | .end = OMAP_OHCI_BASE + 0xff, |
| 233 | .flags = IORESOURCE_MEM, |
| 234 | }, |
| 235 | { |
| 236 | .start = INT_USB_IRQ_HGEN, |
| 237 | .flags = IORESOURCE_IRQ, |
| 238 | }, |
| 239 | }; |
| 240 | |
| 241 | static struct platform_device ohci_device = { |
| 242 | .name = "ohci", |
| 243 | .id = -1, |
| 244 | .dev = { |
| 245 | .dma_mask = &ohci_dmamask, |
| 246 | .coherent_dma_mask = 0xffffffff, |
| 247 | }, |
| 248 | .num_resources = ARRAY_SIZE(ohci_resources), |
| 249 | .resource = ohci_resources, |
| 250 | }; |
| 251 | |
| 252 | static inline void ohci_device_init(struct omap_usb_config *pdata) |
| 253 | { |
| 254 | if (cpu_is_omap7xx()) |
| 255 | ohci_resources[1].start = INT_7XX_USB_HHC_1; |
| 256 | pdata->ohci_device = &ohci_device; |
Paul Walmsley | d3645d3 | 2012-04-13 06:34:27 -0600 | [diff] [blame] | 257 | pdata->ocpi_enable = &ocpi_enable; |
Tony Lindgren | dd0cdd8 | 2010-07-05 16:31:30 +0300 | [diff] [blame] | 258 | } |
| 259 | |
| 260 | #else |
| 261 | |
| 262 | static inline void ohci_device_init(struct omap_usb_config *pdata) |
| 263 | { |
| 264 | } |
| 265 | |
| 266 | #endif |
| 267 | |
| 268 | #if defined(CONFIG_USB_OTG) && defined(CONFIG_ARCH_OMAP_OTG) |
| 269 | |
| 270 | static struct resource otg_resources[] = { |
| 271 | /* order is significant! */ |
| 272 | { |
| 273 | .start = OTG_BASE, |
| 274 | .end = OTG_BASE + 0xff, |
| 275 | .flags = IORESOURCE_MEM, |
| 276 | }, { |
| 277 | .start = INT_USB_IRQ_OTG, |
| 278 | .flags = IORESOURCE_IRQ, |
| 279 | }, |
| 280 | }; |
| 281 | |
| 282 | static struct platform_device otg_device = { |
| 283 | .name = "omap_otg", |
| 284 | .id = -1, |
| 285 | .num_resources = ARRAY_SIZE(otg_resources), |
| 286 | .resource = otg_resources, |
| 287 | }; |
| 288 | |
| 289 | static inline void otg_device_init(struct omap_usb_config *pdata) |
| 290 | { |
| 291 | if (cpu_is_omap7xx()) |
| 292 | otg_resources[1].start = INT_7XX_USB_OTG; |
| 293 | pdata->otg_device = &otg_device; |
| 294 | } |
| 295 | |
| 296 | #else |
| 297 | |
| 298 | static inline void otg_device_init(struct omap_usb_config *pdata) |
| 299 | { |
| 300 | } |
| 301 | |
| 302 | #endif |
| 303 | |
Paul Walmsley | eba36d7 | 2012-10-26 21:28:58 +0000 | [diff] [blame^] | 304 | static u32 __init omap1_usb0_init(unsigned nwires, unsigned is_device) |
Tony Lindgren | dd0cdd8 | 2010-07-05 16:31:30 +0300 | [diff] [blame] | 305 | { |
| 306 | u32 syscon1 = 0; |
| 307 | |
| 308 | if (nwires == 0) { |
| 309 | if (!cpu_is_omap15xx()) { |
| 310 | u32 l; |
| 311 | |
| 312 | /* pulldown D+/D- */ |
| 313 | l = omap_readl(USB_TRANSCEIVER_CTRL); |
| 314 | l &= ~(3 << 1); |
| 315 | omap_writel(l, USB_TRANSCEIVER_CTRL); |
| 316 | } |
| 317 | return 0; |
| 318 | } |
| 319 | |
| 320 | if (is_device) { |
| 321 | if (cpu_is_omap7xx()) { |
| 322 | omap_cfg_reg(AA17_7XX_USB_DM); |
| 323 | omap_cfg_reg(W16_7XX_USB_PU_EN); |
| 324 | omap_cfg_reg(W17_7XX_USB_VBUSI); |
| 325 | omap_cfg_reg(W18_7XX_USB_DMCK_OUT); |
| 326 | omap_cfg_reg(W19_7XX_USB_DCRST); |
| 327 | } else |
| 328 | omap_cfg_reg(W4_USB_PUEN); |
| 329 | } |
| 330 | |
| 331 | if (nwires == 2) { |
| 332 | u32 l; |
| 333 | |
| 334 | // omap_cfg_reg(P9_USB_DP); |
| 335 | // omap_cfg_reg(R8_USB_DM); |
| 336 | |
| 337 | if (cpu_is_omap15xx()) { |
| 338 | /* This works on 1510-Innovator */ |
| 339 | return 0; |
| 340 | } |
| 341 | |
| 342 | /* NOTES: |
| 343 | * - peripheral should configure VBUS detection! |
| 344 | * - only peripherals may use the internal D+/D- pulldowns |
| 345 | * - OTG support on this port not yet written |
| 346 | */ |
| 347 | |
| 348 | /* Don't do this for omap7xx -- it causes USB to not work correctly */ |
| 349 | if (!cpu_is_omap7xx()) { |
| 350 | l = omap_readl(USB_TRANSCEIVER_CTRL); |
| 351 | l &= ~(7 << 4); |
| 352 | if (!is_device) |
| 353 | l |= (3 << 1); |
| 354 | omap_writel(l, USB_TRANSCEIVER_CTRL); |
| 355 | } |
| 356 | |
| 357 | return 3 << 16; |
| 358 | } |
| 359 | |
| 360 | /* alternate pin config, external transceiver */ |
| 361 | if (cpu_is_omap15xx()) { |
| 362 | printk(KERN_ERR "no usb0 alt pin config on 15xx\n"); |
| 363 | return 0; |
| 364 | } |
| 365 | |
| 366 | omap_cfg_reg(V6_USB0_TXD); |
| 367 | omap_cfg_reg(W9_USB0_TXEN); |
| 368 | omap_cfg_reg(W5_USB0_SE0); |
| 369 | if (nwires != 3) |
| 370 | omap_cfg_reg(Y5_USB0_RCV); |
| 371 | |
| 372 | /* NOTE: SPEED and SUSP aren't configured here. OTG hosts |
| 373 | * may be able to use I2C requests to set those bits along |
| 374 | * with VBUS switching and overcurrent detection. |
| 375 | */ |
| 376 | |
| 377 | if (nwires != 6) { |
| 378 | u32 l; |
| 379 | |
| 380 | l = omap_readl(USB_TRANSCEIVER_CTRL); |
| 381 | l &= ~CONF_USB2_UNI_R; |
| 382 | omap_writel(l, USB_TRANSCEIVER_CTRL); |
| 383 | } |
| 384 | |
| 385 | switch (nwires) { |
| 386 | case 3: |
| 387 | syscon1 = 2; |
| 388 | break; |
| 389 | case 4: |
| 390 | syscon1 = 1; |
| 391 | break; |
| 392 | case 6: |
| 393 | syscon1 = 3; |
| 394 | { |
| 395 | u32 l; |
| 396 | |
| 397 | omap_cfg_reg(AA9_USB0_VP); |
| 398 | omap_cfg_reg(R9_USB0_VM); |
| 399 | l = omap_readl(USB_TRANSCEIVER_CTRL); |
| 400 | l |= CONF_USB2_UNI_R; |
| 401 | omap_writel(l, USB_TRANSCEIVER_CTRL); |
| 402 | } |
| 403 | break; |
| 404 | default: |
| 405 | printk(KERN_ERR "illegal usb%d %d-wire transceiver\n", |
| 406 | 0, nwires); |
| 407 | } |
| 408 | |
| 409 | return syscon1 << 16; |
| 410 | } |
| 411 | |
Paul Walmsley | eba36d7 | 2012-10-26 21:28:58 +0000 | [diff] [blame^] | 412 | static u32 __init omap1_usb1_init(unsigned nwires) |
Tony Lindgren | dd0cdd8 | 2010-07-05 16:31:30 +0300 | [diff] [blame] | 413 | { |
| 414 | u32 syscon1 = 0; |
| 415 | |
| 416 | if (!cpu_is_omap15xx() && nwires != 6) { |
| 417 | u32 l; |
| 418 | |
| 419 | l = omap_readl(USB_TRANSCEIVER_CTRL); |
| 420 | l &= ~CONF_USB1_UNI_R; |
| 421 | omap_writel(l, USB_TRANSCEIVER_CTRL); |
| 422 | } |
| 423 | if (nwires == 0) |
| 424 | return 0; |
| 425 | |
| 426 | /* external transceiver */ |
| 427 | omap_cfg_reg(USB1_TXD); |
| 428 | omap_cfg_reg(USB1_TXEN); |
| 429 | if (nwires != 3) |
| 430 | omap_cfg_reg(USB1_RCV); |
| 431 | |
| 432 | if (cpu_is_omap15xx()) { |
| 433 | omap_cfg_reg(USB1_SEO); |
| 434 | omap_cfg_reg(USB1_SPEED); |
| 435 | // SUSP |
| 436 | } else if (cpu_is_omap1610() || cpu_is_omap5912()) { |
| 437 | omap_cfg_reg(W13_1610_USB1_SE0); |
| 438 | omap_cfg_reg(R13_1610_USB1_SPEED); |
| 439 | // SUSP |
| 440 | } else if (cpu_is_omap1710()) { |
| 441 | omap_cfg_reg(R13_1710_USB1_SE0); |
| 442 | // SUSP |
| 443 | } else { |
| 444 | pr_debug("usb%d cpu unrecognized\n", 1); |
| 445 | return 0; |
| 446 | } |
| 447 | |
| 448 | switch (nwires) { |
| 449 | case 2: |
| 450 | goto bad; |
| 451 | case 3: |
| 452 | syscon1 = 2; |
| 453 | break; |
| 454 | case 4: |
| 455 | syscon1 = 1; |
| 456 | break; |
| 457 | case 6: |
| 458 | syscon1 = 3; |
| 459 | omap_cfg_reg(USB1_VP); |
| 460 | omap_cfg_reg(USB1_VM); |
| 461 | if (!cpu_is_omap15xx()) { |
| 462 | u32 l; |
| 463 | |
| 464 | l = omap_readl(USB_TRANSCEIVER_CTRL); |
| 465 | l |= CONF_USB1_UNI_R; |
| 466 | omap_writel(l, USB_TRANSCEIVER_CTRL); |
| 467 | } |
| 468 | break; |
| 469 | default: |
| 470 | bad: |
| 471 | printk(KERN_ERR "illegal usb%d %d-wire transceiver\n", |
| 472 | 1, nwires); |
| 473 | } |
| 474 | |
| 475 | return syscon1 << 20; |
| 476 | } |
| 477 | |
Paul Walmsley | eba36d7 | 2012-10-26 21:28:58 +0000 | [diff] [blame^] | 478 | static u32 __init omap1_usb2_init(unsigned nwires, unsigned alt_pingroup) |
Tony Lindgren | dd0cdd8 | 2010-07-05 16:31:30 +0300 | [diff] [blame] | 479 | { |
| 480 | u32 syscon1 = 0; |
| 481 | |
| 482 | /* NOTE omap1 erratum: must leave USB2_UNI_R set if usb0 in use */ |
| 483 | if (alt_pingroup || nwires == 0) |
| 484 | return 0; |
| 485 | |
| 486 | if (!cpu_is_omap15xx() && nwires != 6) { |
| 487 | u32 l; |
| 488 | |
| 489 | l = omap_readl(USB_TRANSCEIVER_CTRL); |
| 490 | l &= ~CONF_USB2_UNI_R; |
| 491 | omap_writel(l, USB_TRANSCEIVER_CTRL); |
| 492 | } |
| 493 | |
| 494 | /* external transceiver */ |
| 495 | if (cpu_is_omap15xx()) { |
| 496 | omap_cfg_reg(USB2_TXD); |
| 497 | omap_cfg_reg(USB2_TXEN); |
| 498 | omap_cfg_reg(USB2_SEO); |
| 499 | if (nwires != 3) |
| 500 | omap_cfg_reg(USB2_RCV); |
| 501 | /* there is no USB2_SPEED */ |
| 502 | } else if (cpu_is_omap16xx()) { |
| 503 | omap_cfg_reg(V6_USB2_TXD); |
| 504 | omap_cfg_reg(W9_USB2_TXEN); |
| 505 | omap_cfg_reg(W5_USB2_SE0); |
| 506 | if (nwires != 3) |
| 507 | omap_cfg_reg(Y5_USB2_RCV); |
| 508 | // FIXME omap_cfg_reg(USB2_SPEED); |
| 509 | } else { |
| 510 | pr_debug("usb%d cpu unrecognized\n", 1); |
| 511 | return 0; |
| 512 | } |
| 513 | |
| 514 | // omap_cfg_reg(USB2_SUSP); |
| 515 | |
| 516 | switch (nwires) { |
| 517 | case 2: |
| 518 | goto bad; |
| 519 | case 3: |
| 520 | syscon1 = 2; |
| 521 | break; |
| 522 | case 4: |
| 523 | syscon1 = 1; |
| 524 | break; |
| 525 | case 5: |
| 526 | goto bad; |
| 527 | case 6: |
| 528 | syscon1 = 3; |
| 529 | if (cpu_is_omap15xx()) { |
| 530 | omap_cfg_reg(USB2_VP); |
| 531 | omap_cfg_reg(USB2_VM); |
| 532 | } else { |
| 533 | u32 l; |
| 534 | |
| 535 | omap_cfg_reg(AA9_USB2_VP); |
| 536 | omap_cfg_reg(R9_USB2_VM); |
| 537 | l = omap_readl(USB_TRANSCEIVER_CTRL); |
| 538 | l |= CONF_USB2_UNI_R; |
| 539 | omap_writel(l, USB_TRANSCEIVER_CTRL); |
| 540 | } |
| 541 | break; |
| 542 | default: |
| 543 | bad: |
| 544 | printk(KERN_ERR "illegal usb%d %d-wire transceiver\n", |
| 545 | 2, nwires); |
| 546 | } |
| 547 | |
| 548 | return syscon1 << 24; |
| 549 | } |
| 550 | |
| 551 | #ifdef CONFIG_ARCH_OMAP15XX |
| 552 | |
| 553 | /* ULPD_DPLL_CTRL */ |
| 554 | #define DPLL_IOB (1 << 13) |
| 555 | #define DPLL_PLL_ENABLE (1 << 4) |
| 556 | #define DPLL_LOCK (1 << 0) |
| 557 | |
| 558 | /* ULPD_APLL_CTRL */ |
| 559 | #define APLL_NDPLL_SWITCH (1 << 0) |
| 560 | |
| 561 | static void __init omap_1510_usb_init(struct omap_usb_config *config) |
| 562 | { |
| 563 | unsigned int val; |
| 564 | u16 w; |
| 565 | |
| 566 | config->usb0_init(config->pins[0], is_usb0_device(config)); |
| 567 | config->usb1_init(config->pins[1]); |
| 568 | config->usb2_init(config->pins[2], 0); |
| 569 | |
| 570 | val = omap_readl(MOD_CONF_CTRL_0) & ~(0x3f << 1); |
| 571 | val |= (config->hmc_mode << 1); |
| 572 | omap_writel(val, MOD_CONF_CTRL_0); |
| 573 | |
| 574 | printk("USB: hmc %d", config->hmc_mode); |
| 575 | if (config->pins[0]) |
| 576 | printk(", usb0 %d wires%s", config->pins[0], |
| 577 | is_usb0_device(config) ? " (dev)" : ""); |
| 578 | if (config->pins[1]) |
| 579 | printk(", usb1 %d wires", config->pins[1]); |
| 580 | if (config->pins[2]) |
| 581 | printk(", usb2 %d wires", config->pins[2]); |
| 582 | printk("\n"); |
| 583 | |
| 584 | /* use DPLL for 48 MHz function clock */ |
| 585 | pr_debug("APLL %04x DPLL %04x REQ %04x\n", omap_readw(ULPD_APLL_CTRL), |
| 586 | omap_readw(ULPD_DPLL_CTRL), omap_readw(ULPD_SOFT_REQ)); |
| 587 | |
| 588 | w = omap_readw(ULPD_APLL_CTRL); |
| 589 | w &= ~APLL_NDPLL_SWITCH; |
| 590 | omap_writew(w, ULPD_APLL_CTRL); |
| 591 | |
| 592 | w = omap_readw(ULPD_DPLL_CTRL); |
| 593 | w |= DPLL_IOB | DPLL_PLL_ENABLE; |
| 594 | omap_writew(w, ULPD_DPLL_CTRL); |
| 595 | |
| 596 | w = omap_readw(ULPD_SOFT_REQ); |
| 597 | w |= SOFT_UDC_REQ | SOFT_DPLL_REQ; |
| 598 | omap_writew(w, ULPD_SOFT_REQ); |
| 599 | |
| 600 | while (!(omap_readw(ULPD_DPLL_CTRL) & DPLL_LOCK)) |
| 601 | cpu_relax(); |
| 602 | |
| 603 | #ifdef CONFIG_USB_GADGET_OMAP |
| 604 | if (config->register_dev) { |
| 605 | int status; |
| 606 | |
| 607 | udc_device.dev.platform_data = config; |
| 608 | status = platform_device_register(&udc_device); |
| 609 | if (status) |
| 610 | pr_debug("can't register UDC device, %d\n", status); |
| 611 | /* udc driver gates 48MHz by D+ pullup */ |
| 612 | } |
| 613 | #endif |
| 614 | |
| 615 | #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) |
| 616 | if (config->register_host) { |
| 617 | int status; |
| 618 | |
| 619 | ohci_device.dev.platform_data = config; |
| 620 | status = platform_device_register(&ohci_device); |
| 621 | if (status) |
| 622 | pr_debug("can't register OHCI device, %d\n", status); |
| 623 | /* hcd explicitly gates 48MHz */ |
| 624 | } |
| 625 | #endif |
| 626 | } |
| 627 | |
| 628 | #else |
| 629 | static inline void omap_1510_usb_init(struct omap_usb_config *config) {} |
| 630 | #endif |
| 631 | |
| 632 | void __init omap1_usb_init(struct omap_usb_config *pdata) |
| 633 | { |
| 634 | pdata->usb0_init = omap1_usb0_init; |
| 635 | pdata->usb1_init = omap1_usb1_init; |
| 636 | pdata->usb2_init = omap1_usb2_init; |
| 637 | udc_device_init(pdata); |
| 638 | ohci_device_init(pdata); |
| 639 | otg_device_init(pdata); |
| 640 | |
| 641 | if (cpu_is_omap7xx() || cpu_is_omap16xx()) |
| 642 | omap_otg_init(pdata); |
| 643 | else if (cpu_is_omap15xx()) |
| 644 | omap_1510_usb_init(pdata); |
| 645 | else |
| 646 | printk(KERN_ERR "USB: No init for your chip yet\n"); |
| 647 | } |