Tony Lindgren | 5e1c5ff | 2005-07-10 19:58:15 +0100 | [diff] [blame] | 1 | /* |
| 2 | * arch/arm/plat-omap/usb.c -- platform level USB initialization |
| 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 | #undef DEBUG |
| 22 | |
| 23 | #include <linux/config.h> |
| 24 | #include <linux/module.h> |
| 25 | #include <linux/kernel.h> |
| 26 | #include <linux/types.h> |
| 27 | #include <linux/errno.h> |
| 28 | #include <linux/init.h> |
Russell King | d052d1b | 2005-10-29 19:07:23 +0100 | [diff] [blame] | 29 | #include <linux/platform_device.h> |
Tony Lindgren | 5e1c5ff | 2005-07-10 19:58:15 +0100 | [diff] [blame] | 30 | #include <linux/usb_otg.h> |
| 31 | |
| 32 | #include <asm/io.h> |
| 33 | #include <asm/irq.h> |
| 34 | #include <asm/system.h> |
| 35 | #include <asm/hardware.h> |
Tony Lindgren | 5e1c5ff | 2005-07-10 19:58:15 +0100 | [diff] [blame] | 36 | |
| 37 | #include <asm/arch/mux.h> |
| 38 | #include <asm/arch/usb.h> |
| 39 | #include <asm/arch/board.h> |
| 40 | |
| 41 | /* These routines should handle the standard chip-specific modes |
| 42 | * for usb0/1/2 ports, covering basic mux and transceiver setup. |
Tony Lindgren | 92105bb | 2005-09-07 17:20:26 +0100 | [diff] [blame] | 43 | * Call omap_usb_init() once, from INIT_MACHINE(). |
Tony Lindgren | 5e1c5ff | 2005-07-10 19:58:15 +0100 | [diff] [blame] | 44 | * |
| 45 | * Some board-*.c files will need to set up additional mux options, |
| 46 | * like for suspend handling, vbus sensing, GPIOs, and the D+ pullup. |
| 47 | */ |
| 48 | |
| 49 | /* TESTED ON: |
| 50 | * - 1611B H2 (with usb1 mini-AB) using standard Mini-B or OTG cables |
| 51 | * - 5912 OSK OHCI (with usb0 standard-A), standard A-to-B cables |
| 52 | * - 5912 OSK UDC, with *nonstandard* A-to-A cable |
| 53 | * - 1510 Innovator UDC with bundled usb0 cable |
| 54 | * - 1510 Innovator OHCI with bundled usb1/usb2 cable |
| 55 | * - 1510 Innovator OHCI with custom usb0 cable, feeding 5V VBUS |
| 56 | * - 1710 custom development board using alternate pin group |
| 57 | * - 1710 H3 (with usb1 mini-AB) using standard Mini-B or OTG cables |
| 58 | */ |
| 59 | |
| 60 | /*-------------------------------------------------------------------------*/ |
| 61 | |
| 62 | #ifdef CONFIG_ARCH_OMAP_OTG |
| 63 | |
| 64 | static struct otg_transceiver *xceiv; |
| 65 | |
| 66 | /** |
| 67 | * otg_get_transceiver - find the (single) OTG transceiver driver |
| 68 | * |
| 69 | * Returns the transceiver driver, after getting a refcount to it; or |
| 70 | * null if there is no such transceiver. The caller is responsible for |
| 71 | * releasing that count. |
| 72 | */ |
| 73 | struct otg_transceiver *otg_get_transceiver(void) |
| 74 | { |
| 75 | if (xceiv) |
| 76 | get_device(xceiv->dev); |
| 77 | return xceiv; |
| 78 | } |
| 79 | EXPORT_SYMBOL(otg_get_transceiver); |
| 80 | |
| 81 | int otg_set_transceiver(struct otg_transceiver *x) |
| 82 | { |
| 83 | if (xceiv && x) |
| 84 | return -EBUSY; |
| 85 | xceiv = x; |
| 86 | return 0; |
| 87 | } |
| 88 | EXPORT_SYMBOL(otg_set_transceiver); |
| 89 | |
| 90 | #endif |
| 91 | |
| 92 | /*-------------------------------------------------------------------------*/ |
| 93 | |
Tony Lindgren | 1a8bfa1 | 2005-11-10 14:26:50 +0000 | [diff] [blame] | 94 | #if defined(CONFIG_ARCH_OMAP_OTG) || defined(CONFIG_ARCH_OMAP15XX) |
| 95 | |
Tony Lindgren | 5e1c5ff | 2005-07-10 19:58:15 +0100 | [diff] [blame] | 96 | static u32 __init omap_usb0_init(unsigned nwires, unsigned is_device) |
| 97 | { |
| 98 | u32 syscon1 = 0; |
| 99 | |
| 100 | if (nwires == 0) { |
| 101 | if (!cpu_is_omap15xx()) { |
| 102 | /* pulldown D+/D- */ |
| 103 | USB_TRANSCEIVER_CTRL_REG &= ~(3 << 1); |
| 104 | } |
| 105 | return 0; |
| 106 | } |
| 107 | |
| 108 | if (is_device) |
| 109 | omap_cfg_reg(W4_USB_PUEN); |
| 110 | |
| 111 | /* internal transceiver */ |
| 112 | if (nwires == 2) { |
| 113 | // omap_cfg_reg(P9_USB_DP); |
| 114 | // omap_cfg_reg(R8_USB_DM); |
| 115 | |
| 116 | if (cpu_is_omap15xx()) { |
| 117 | /* This works on 1510-Innovator */ |
| 118 | return 0; |
| 119 | } |
| 120 | |
| 121 | /* NOTES: |
| 122 | * - peripheral should configure VBUS detection! |
| 123 | * - only peripherals may use the internal D+/D- pulldowns |
| 124 | * - OTG support on this port not yet written |
| 125 | */ |
| 126 | |
| 127 | USB_TRANSCEIVER_CTRL_REG &= ~(7 << 4); |
| 128 | if (!is_device) |
| 129 | USB_TRANSCEIVER_CTRL_REG |= (3 << 1); |
| 130 | |
| 131 | return 3 << 16; |
| 132 | } |
| 133 | |
| 134 | /* alternate pin config, external transceiver */ |
| 135 | if (cpu_is_omap15xx()) { |
| 136 | printk(KERN_ERR "no usb0 alt pin config on 15xx\n"); |
| 137 | return 0; |
| 138 | } |
| 139 | |
| 140 | omap_cfg_reg(V6_USB0_TXD); |
| 141 | omap_cfg_reg(W9_USB0_TXEN); |
| 142 | omap_cfg_reg(W5_USB0_SE0); |
| 143 | |
| 144 | /* NOTE: SPEED and SUSP aren't configured here */ |
| 145 | |
| 146 | if (nwires != 3) |
| 147 | omap_cfg_reg(Y5_USB0_RCV); |
| 148 | if (nwires != 6) |
| 149 | USB_TRANSCEIVER_CTRL_REG &= ~CONF_USB2_UNI_R; |
| 150 | |
| 151 | switch (nwires) { |
| 152 | case 3: |
| 153 | syscon1 = 2; |
| 154 | break; |
| 155 | case 4: |
| 156 | syscon1 = 1; |
| 157 | break; |
| 158 | case 6: |
| 159 | syscon1 = 3; |
| 160 | omap_cfg_reg(AA9_USB0_VP); |
| 161 | omap_cfg_reg(R9_USB0_VM); |
| 162 | USB_TRANSCEIVER_CTRL_REG |= CONF_USB2_UNI_R; |
| 163 | break; |
| 164 | default: |
| 165 | printk(KERN_ERR "illegal usb%d %d-wire transceiver\n", |
| 166 | 0, nwires); |
| 167 | } |
| 168 | return syscon1 << 16; |
| 169 | } |
| 170 | |
| 171 | static u32 __init omap_usb1_init(unsigned nwires) |
| 172 | { |
| 173 | u32 syscon1 = 0; |
| 174 | |
| 175 | if (nwires != 6 && !cpu_is_omap15xx()) |
| 176 | USB_TRANSCEIVER_CTRL_REG &= ~CONF_USB1_UNI_R; |
| 177 | if (nwires == 0) |
| 178 | return 0; |
| 179 | |
| 180 | /* external transceiver */ |
| 181 | omap_cfg_reg(USB1_TXD); |
| 182 | omap_cfg_reg(USB1_TXEN); |
| 183 | if (cpu_is_omap15xx()) { |
| 184 | omap_cfg_reg(USB1_SEO); |
| 185 | omap_cfg_reg(USB1_SPEED); |
| 186 | // SUSP |
| 187 | } else if (cpu_is_omap1610() || cpu_is_omap5912()) { |
| 188 | omap_cfg_reg(W13_1610_USB1_SE0); |
| 189 | omap_cfg_reg(R13_1610_USB1_SPEED); |
| 190 | // SUSP |
| 191 | } else if (cpu_is_omap1710()) { |
| 192 | omap_cfg_reg(R13_1710_USB1_SE0); |
| 193 | // SUSP |
| 194 | } else { |
| 195 | pr_debug("usb unrecognized\n"); |
| 196 | } |
| 197 | if (nwires != 3) |
| 198 | omap_cfg_reg(USB1_RCV); |
| 199 | |
| 200 | switch (nwires) { |
| 201 | case 3: |
| 202 | syscon1 = 2; |
| 203 | break; |
| 204 | case 4: |
| 205 | syscon1 = 1; |
| 206 | break; |
| 207 | case 6: |
| 208 | syscon1 = 3; |
| 209 | omap_cfg_reg(USB1_VP); |
| 210 | omap_cfg_reg(USB1_VM); |
| 211 | if (!cpu_is_omap15xx()) |
| 212 | USB_TRANSCEIVER_CTRL_REG |= CONF_USB1_UNI_R; |
| 213 | break; |
| 214 | default: |
| 215 | printk(KERN_ERR "illegal usb%d %d-wire transceiver\n", |
| 216 | 1, nwires); |
| 217 | } |
| 218 | return syscon1 << 20; |
| 219 | } |
| 220 | |
| 221 | static u32 __init omap_usb2_init(unsigned nwires, unsigned alt_pingroup) |
| 222 | { |
| 223 | u32 syscon1 = 0; |
| 224 | |
| 225 | /* NOTE erratum: must leave USB2_UNI_R set if usb0 in use */ |
| 226 | if (alt_pingroup || nwires == 0) |
| 227 | return 0; |
| 228 | if (nwires != 6 && !cpu_is_omap15xx()) |
| 229 | USB_TRANSCEIVER_CTRL_REG &= ~CONF_USB2_UNI_R; |
| 230 | |
| 231 | /* external transceiver */ |
| 232 | if (cpu_is_omap15xx()) { |
| 233 | omap_cfg_reg(USB2_TXD); |
| 234 | omap_cfg_reg(USB2_TXEN); |
| 235 | omap_cfg_reg(USB2_SEO); |
| 236 | if (nwires != 3) |
| 237 | omap_cfg_reg(USB2_RCV); |
| 238 | /* there is no USB2_SPEED */ |
| 239 | } else if (cpu_is_omap16xx()) { |
| 240 | omap_cfg_reg(V6_USB2_TXD); |
| 241 | omap_cfg_reg(W9_USB2_TXEN); |
| 242 | omap_cfg_reg(W5_USB2_SE0); |
| 243 | if (nwires != 3) |
| 244 | omap_cfg_reg(Y5_USB2_RCV); |
| 245 | // FIXME omap_cfg_reg(USB2_SPEED); |
| 246 | } else { |
| 247 | pr_debug("usb unrecognized\n"); |
| 248 | } |
| 249 | // omap_cfg_reg(USB2_SUSP); |
| 250 | |
| 251 | switch (nwires) { |
| 252 | case 3: |
| 253 | syscon1 = 2; |
| 254 | break; |
| 255 | case 4: |
| 256 | syscon1 = 1; |
| 257 | break; |
| 258 | case 6: |
| 259 | syscon1 = 3; |
| 260 | if (cpu_is_omap15xx()) { |
| 261 | omap_cfg_reg(USB2_VP); |
| 262 | omap_cfg_reg(USB2_VM); |
| 263 | } else { |
| 264 | omap_cfg_reg(AA9_USB2_VP); |
| 265 | omap_cfg_reg(R9_USB2_VM); |
| 266 | USB_TRANSCEIVER_CTRL_REG |= CONF_USB2_UNI_R; |
| 267 | } |
| 268 | break; |
| 269 | default: |
| 270 | printk(KERN_ERR "illegal usb%d %d-wire transceiver\n", |
| 271 | 2, nwires); |
| 272 | } |
| 273 | return syscon1 << 24; |
| 274 | } |
| 275 | |
Tony Lindgren | 1a8bfa1 | 2005-11-10 14:26:50 +0000 | [diff] [blame] | 276 | #endif |
| 277 | |
Tony Lindgren | 5e1c5ff | 2005-07-10 19:58:15 +0100 | [diff] [blame] | 278 | /*-------------------------------------------------------------------------*/ |
| 279 | |
| 280 | #if defined(CONFIG_USB_GADGET_OMAP) || \ |
| 281 | defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) || \ |
| 282 | (defined(CONFIG_USB_OTG) && defined(CONFIG_ARCH_OMAP_OTG)) |
| 283 | static void usb_release(struct device *dev) |
| 284 | { |
| 285 | /* normally not freed */ |
| 286 | } |
| 287 | #endif |
| 288 | |
| 289 | #ifdef CONFIG_USB_GADGET_OMAP |
| 290 | |
| 291 | static struct resource udc_resources[] = { |
| 292 | /* order is significant! */ |
| 293 | { /* registers */ |
| 294 | .start = UDC_BASE, |
| 295 | .end = UDC_BASE + 0xff, |
| 296 | .flags = IORESOURCE_MEM, |
| 297 | }, { /* general IRQ */ |
| 298 | .start = IH2_BASE + 20, |
| 299 | .flags = IORESOURCE_IRQ, |
| 300 | }, { /* PIO IRQ */ |
| 301 | .start = IH2_BASE + 30, |
| 302 | .flags = IORESOURCE_IRQ, |
| 303 | }, { /* SOF IRQ */ |
| 304 | .start = IH2_BASE + 29, |
| 305 | .flags = IORESOURCE_IRQ, |
| 306 | }, |
| 307 | }; |
| 308 | |
| 309 | static u64 udc_dmamask = ~(u32)0; |
| 310 | |
| 311 | static struct platform_device udc_device = { |
| 312 | .name = "omap_udc", |
| 313 | .id = -1, |
| 314 | .dev = { |
| 315 | .release = usb_release, |
| 316 | .dma_mask = &udc_dmamask, |
| 317 | .coherent_dma_mask = 0xffffffff, |
| 318 | }, |
| 319 | .num_resources = ARRAY_SIZE(udc_resources), |
| 320 | .resource = udc_resources, |
| 321 | }; |
| 322 | |
| 323 | #endif |
| 324 | |
| 325 | #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) |
| 326 | |
| 327 | /* The dmamask must be set for OHCI to work */ |
| 328 | static u64 ohci_dmamask = ~(u32)0; |
| 329 | |
| 330 | static struct resource ohci_resources[] = { |
| 331 | { |
| 332 | .start = OMAP_OHCI_BASE, |
Tony Lindgren | bb13b5fd | 2005-07-10 19:58:18 +0100 | [diff] [blame] | 333 | .end = OMAP_OHCI_BASE + 4096 - 1, |
Tony Lindgren | 5e1c5ff | 2005-07-10 19:58:15 +0100 | [diff] [blame] | 334 | .flags = IORESOURCE_MEM, |
| 335 | }, |
| 336 | { |
| 337 | .start = INT_USB_HHC_1, |
| 338 | .flags = IORESOURCE_IRQ, |
| 339 | }, |
| 340 | }; |
| 341 | |
| 342 | static struct platform_device ohci_device = { |
| 343 | .name = "ohci", |
| 344 | .id = -1, |
| 345 | .dev = { |
| 346 | .release = usb_release, |
| 347 | .dma_mask = &ohci_dmamask, |
| 348 | .coherent_dma_mask = 0xffffffff, |
| 349 | }, |
| 350 | .num_resources = ARRAY_SIZE(ohci_resources), |
| 351 | .resource = ohci_resources, |
| 352 | }; |
| 353 | |
| 354 | #endif |
| 355 | |
| 356 | #if defined(CONFIG_USB_OTG) && defined(CONFIG_ARCH_OMAP_OTG) |
| 357 | |
| 358 | static struct resource otg_resources[] = { |
| 359 | /* order is significant! */ |
| 360 | { |
| 361 | .start = OTG_BASE, |
| 362 | .end = OTG_BASE + 0xff, |
| 363 | .flags = IORESOURCE_MEM, |
| 364 | }, { |
| 365 | .start = IH2_BASE + 8, |
| 366 | .flags = IORESOURCE_IRQ, |
| 367 | }, |
| 368 | }; |
| 369 | |
| 370 | static struct platform_device otg_device = { |
| 371 | .name = "omap_otg", |
| 372 | .id = -1, |
| 373 | .dev = { |
| 374 | .release = usb_release, |
| 375 | }, |
| 376 | .num_resources = ARRAY_SIZE(otg_resources), |
| 377 | .resource = otg_resources, |
| 378 | }; |
| 379 | |
| 380 | #endif |
| 381 | |
| 382 | /*-------------------------------------------------------------------------*/ |
| 383 | |
| 384 | #define ULPD_CLOCK_CTRL_REG __REG16(ULPD_CLOCK_CTRL) |
| 385 | #define ULPD_SOFT_REQ_REG __REG16(ULPD_SOFT_REQ) |
| 386 | |
| 387 | |
| 388 | // FIXME correct answer depends on hmc_mode, |
| 389 | // as does any nonzero value for config->otg port number |
| 390 | #ifdef CONFIG_USB_GADGET_OMAP |
| 391 | #define is_usb0_device(config) 1 |
| 392 | #else |
| 393 | #define is_usb0_device(config) 0 |
| 394 | #endif |
| 395 | |
| 396 | /*-------------------------------------------------------------------------*/ |
| 397 | |
| 398 | #ifdef CONFIG_ARCH_OMAP_OTG |
| 399 | |
| 400 | void __init |
| 401 | omap_otg_init(struct omap_usb_config *config) |
| 402 | { |
| 403 | u32 syscon = OTG_SYSCON_1_REG & 0xffff; |
| 404 | int status; |
| 405 | int alt_pingroup = 0; |
| 406 | |
| 407 | /* NOTE: no bus or clock setup (yet?) */ |
| 408 | |
| 409 | syscon = OTG_SYSCON_1_REG & 0xffff; |
| 410 | if (!(syscon & OTG_RESET_DONE)) |
| 411 | pr_debug("USB resets not complete?\n"); |
| 412 | |
| 413 | // OTG_IRQ_EN_REG = 0; |
| 414 | |
| 415 | /* pin muxing and transceiver pinouts */ |
| 416 | if (config->pins[0] > 2) /* alt pingroup 2 */ |
| 417 | alt_pingroup = 1; |
| 418 | syscon |= omap_usb0_init(config->pins[0], is_usb0_device(config)); |
| 419 | syscon |= omap_usb1_init(config->pins[1]); |
| 420 | syscon |= omap_usb2_init(config->pins[2], alt_pingroup); |
| 421 | pr_debug("OTG_SYSCON_1_REG = %08x\n", syscon); |
| 422 | OTG_SYSCON_1_REG = syscon; |
| 423 | |
| 424 | syscon = config->hmc_mode; |
| 425 | syscon |= USBX_SYNCHRO | (4 << 16) /* B_ASE0_BRST */; |
| 426 | #ifdef CONFIG_USB_OTG |
| 427 | if (config->otg) |
| 428 | syscon |= OTG_EN; |
| 429 | #endif |
| 430 | pr_debug("USB_TRANSCEIVER_CTRL_REG = %03x\n", USB_TRANSCEIVER_CTRL_REG); |
| 431 | pr_debug("OTG_SYSCON_2_REG = %08x\n", syscon); |
| 432 | OTG_SYSCON_2_REG = syscon; |
| 433 | |
| 434 | printk("USB: hmc %d", config->hmc_mode); |
| 435 | if (alt_pingroup) |
| 436 | printk(", usb2 alt %d wires", config->pins[2]); |
| 437 | else if (config->pins[0]) |
| 438 | printk(", usb0 %d wires%s", config->pins[0], |
| 439 | is_usb0_device(config) ? " (dev)" : ""); |
| 440 | if (config->pins[1]) |
| 441 | printk(", usb1 %d wires", config->pins[1]); |
| 442 | if (!alt_pingroup && config->pins[2]) |
| 443 | printk(", usb2 %d wires", config->pins[2]); |
| 444 | if (config->otg) |
| 445 | printk(", Mini-AB on usb%d", config->otg - 1); |
| 446 | printk("\n"); |
| 447 | |
| 448 | /* leave USB clocks/controllers off until needed */ |
| 449 | ULPD_SOFT_REQ_REG &= ~SOFT_USB_CLK_REQ; |
| 450 | ULPD_CLOCK_CTRL_REG &= ~USB_MCLK_EN; |
| 451 | ULPD_CLOCK_CTRL_REG |= DIS_USB_PVCI_CLK; |
| 452 | syscon = OTG_SYSCON_1_REG; |
| 453 | syscon |= HST_IDLE_EN|DEV_IDLE_EN|OTG_IDLE_EN; |
| 454 | |
| 455 | #ifdef CONFIG_USB_GADGET_OMAP |
| 456 | if (config->otg || config->register_dev) { |
| 457 | syscon &= ~DEV_IDLE_EN; |
| 458 | udc_device.dev.platform_data = config; |
| 459 | /* FIXME patch IRQ numbers for omap730 */ |
| 460 | status = platform_device_register(&udc_device); |
| 461 | if (status) |
| 462 | pr_debug("can't register UDC device, %d\n", status); |
| 463 | } |
| 464 | #endif |
| 465 | |
| 466 | #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) |
| 467 | if (config->otg || config->register_host) { |
| 468 | syscon &= ~HST_IDLE_EN; |
| 469 | ohci_device.dev.platform_data = config; |
| 470 | if (cpu_is_omap730()) |
| 471 | ohci_resources[1].start = INT_730_USB_HHC_1; |
| 472 | status = platform_device_register(&ohci_device); |
| 473 | if (status) |
| 474 | pr_debug("can't register OHCI device, %d\n", status); |
| 475 | } |
| 476 | #endif |
| 477 | |
| 478 | #ifdef CONFIG_USB_OTG |
| 479 | if (config->otg) { |
| 480 | syscon &= ~OTG_IDLE_EN; |
| 481 | otg_device.dev.platform_data = config; |
| 482 | if (cpu_is_omap730()) |
| 483 | otg_resources[1].start = INT_730_USB_OTG; |
| 484 | status = platform_device_register(&otg_device); |
| 485 | if (status) |
| 486 | pr_debug("can't register OTG device, %d\n", status); |
| 487 | } |
| 488 | #endif |
| 489 | pr_debug("OTG_SYSCON_1_REG = %08x\n", syscon); |
| 490 | OTG_SYSCON_1_REG = syscon; |
| 491 | |
| 492 | status = 0; |
| 493 | } |
| 494 | |
| 495 | #else |
| 496 | static inline void omap_otg_init(struct omap_usb_config *config) {} |
| 497 | #endif |
| 498 | |
| 499 | /*-------------------------------------------------------------------------*/ |
| 500 | |
Tony Lindgren | 1a8bfa1 | 2005-11-10 14:26:50 +0000 | [diff] [blame] | 501 | #ifdef CONFIG_ARCH_OMAP15XX |
Tony Lindgren | 5e1c5ff | 2005-07-10 19:58:15 +0100 | [diff] [blame] | 502 | |
| 503 | #define ULPD_DPLL_CTRL_REG __REG16(ULPD_DPLL_CTRL) |
| 504 | #define DPLL_IOB (1 << 13) |
| 505 | #define DPLL_PLL_ENABLE (1 << 4) |
| 506 | #define DPLL_LOCK (1 << 0) |
| 507 | |
| 508 | #define ULPD_APLL_CTRL_REG __REG16(ULPD_APLL_CTRL) |
| 509 | #define APLL_NDPLL_SWITCH (1 << 0) |
| 510 | |
| 511 | |
| 512 | static void __init omap_1510_usb_init(struct omap_usb_config *config) |
| 513 | { |
Tony Lindgren | 5e1c5ff | 2005-07-10 19:58:15 +0100 | [diff] [blame] | 514 | unsigned int val; |
| 515 | |
| 516 | omap_usb0_init(config->pins[0], is_usb0_device(config)); |
| 517 | omap_usb1_init(config->pins[1]); |
| 518 | omap_usb2_init(config->pins[2], 0); |
| 519 | |
| 520 | val = omap_readl(MOD_CONF_CTRL_0) & ~(0x3f << 1); |
| 521 | val |= (config->hmc_mode << 1); |
| 522 | omap_writel(val, MOD_CONF_CTRL_0); |
| 523 | |
| 524 | printk("USB: hmc %d", config->hmc_mode); |
| 525 | if (config->pins[0]) |
| 526 | printk(", usb0 %d wires%s", config->pins[0], |
| 527 | is_usb0_device(config) ? " (dev)" : ""); |
| 528 | if (config->pins[1]) |
| 529 | printk(", usb1 %d wires", config->pins[1]); |
| 530 | if (config->pins[2]) |
| 531 | printk(", usb2 %d wires", config->pins[2]); |
| 532 | printk("\n"); |
| 533 | |
| 534 | /* use DPLL for 48 MHz function clock */ |
| 535 | pr_debug("APLL %04x DPLL %04x REQ %04x\n", ULPD_APLL_CTRL_REG, |
| 536 | ULPD_DPLL_CTRL_REG, ULPD_SOFT_REQ_REG); |
| 537 | ULPD_APLL_CTRL_REG &= ~APLL_NDPLL_SWITCH; |
| 538 | ULPD_DPLL_CTRL_REG |= DPLL_IOB | DPLL_PLL_ENABLE; |
| 539 | ULPD_SOFT_REQ_REG |= SOFT_UDC_REQ | SOFT_DPLL_REQ; |
| 540 | while (!(ULPD_DPLL_CTRL_REG & DPLL_LOCK)) |
| 541 | cpu_relax(); |
| 542 | |
| 543 | #ifdef CONFIG_USB_GADGET_OMAP |
| 544 | if (config->register_dev) { |
Tony Lindgren | 1a8bfa1 | 2005-11-10 14:26:50 +0000 | [diff] [blame] | 545 | int status; |
| 546 | |
Tony Lindgren | 5e1c5ff | 2005-07-10 19:58:15 +0100 | [diff] [blame] | 547 | udc_device.dev.platform_data = config; |
| 548 | status = platform_device_register(&udc_device); |
| 549 | if (status) |
| 550 | pr_debug("can't register UDC device, %d\n", status); |
| 551 | /* udc driver gates 48MHz by D+ pullup */ |
| 552 | } |
| 553 | #endif |
| 554 | |
| 555 | #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) |
| 556 | if (config->register_host) { |
Tony Lindgren | 1a8bfa1 | 2005-11-10 14:26:50 +0000 | [diff] [blame] | 557 | int status; |
| 558 | |
Tony Lindgren | 5e1c5ff | 2005-07-10 19:58:15 +0100 | [diff] [blame] | 559 | ohci_device.dev.platform_data = config; |
| 560 | status = platform_device_register(&ohci_device); |
| 561 | if (status) |
| 562 | pr_debug("can't register OHCI device, %d\n", status); |
| 563 | /* hcd explicitly gates 48MHz */ |
| 564 | } |
| 565 | #endif |
| 566 | } |
| 567 | |
| 568 | #else |
| 569 | static inline void omap_1510_usb_init(struct omap_usb_config *config) {} |
| 570 | #endif |
| 571 | |
| 572 | /*-------------------------------------------------------------------------*/ |
| 573 | |
| 574 | static struct omap_usb_config platform_data; |
| 575 | |
| 576 | static int __init |
| 577 | omap_usb_init(void) |
| 578 | { |
| 579 | const struct omap_usb_config *config; |
| 580 | |
| 581 | config = omap_get_config(OMAP_TAG_USB, struct omap_usb_config); |
| 582 | if (config == NULL) { |
| 583 | printk(KERN_ERR "USB: No board-specific " |
| 584 | "platform config found\n"); |
| 585 | return -ENODEV; |
| 586 | } |
| 587 | platform_data = *config; |
| 588 | |
| 589 | if (cpu_is_omap730() || cpu_is_omap16xx()) |
| 590 | omap_otg_init(&platform_data); |
| 591 | else if (cpu_is_omap15xx()) |
| 592 | omap_1510_usb_init(&platform_data); |
| 593 | else { |
| 594 | printk(KERN_ERR "USB: No init for your chip yet\n"); |
| 595 | return -ENODEV; |
| 596 | } |
| 597 | return 0; |
| 598 | } |
| 599 | |
| 600 | subsys_initcall(omap_usb_init); |