Commit | Line | Data |
---|---|---|
dd0cdd88 TL |
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 | ||
29 | #include <plat/mux.h> | |
30 | #include <plat/usb.h> | |
31 | ||
32 | /* These routines should handle the standard chip-specific modes | |
33 | * for usb0/1/2 ports, covering basic mux and transceiver setup. | |
34 | * | |
35 | * Some board-*.c files will need to set up additional mux options, | |
36 | * like for suspend handling, vbus sensing, GPIOs, and the D+ pullup. | |
37 | */ | |
38 | ||
39 | /* TESTED ON: | |
40 | * - 1611B H2 (with usb1 mini-AB) using standard Mini-B or OTG cables | |
41 | * - 5912 OSK OHCI (with usb0 standard-A), standard A-to-B cables | |
42 | * - 5912 OSK UDC, with *nonstandard* A-to-A cable | |
43 | * - 1510 Innovator UDC with bundled usb0 cable | |
44 | * - 1510 Innovator OHCI with bundled usb1/usb2 cable | |
45 | * - 1510 Innovator OHCI with custom usb0 cable, feeding 5V VBUS | |
46 | * - 1710 custom development board using alternate pin group | |
47 | * - 1710 H3 (with usb1 mini-AB) using standard Mini-B or OTG cables | |
48 | */ | |
49 | ||
50 | #define INT_USB_IRQ_GEN IH2_BASE + 20 | |
51 | #define INT_USB_IRQ_NISO IH2_BASE + 30 | |
52 | #define INT_USB_IRQ_ISO IH2_BASE + 29 | |
53 | #define INT_USB_IRQ_HGEN INT_USB_HHC_1 | |
54 | #define INT_USB_IRQ_OTG IH2_BASE + 8 | |
55 | ||
56 | #ifdef CONFIG_USB_GADGET_OMAP | |
57 | ||
58 | static struct resource udc_resources[] = { | |
59 | /* order is significant! */ | |
60 | { /* registers */ | |
61 | .start = UDC_BASE, | |
62 | .end = UDC_BASE + 0xff, | |
63 | .flags = IORESOURCE_MEM, | |
64 | }, { /* general IRQ */ | |
65 | .start = INT_USB_IRQ_GEN, | |
66 | .flags = IORESOURCE_IRQ, | |
67 | }, { /* PIO IRQ */ | |
68 | .start = INT_USB_IRQ_NISO, | |
69 | .flags = IORESOURCE_IRQ, | |
70 | }, { /* SOF IRQ */ | |
71 | .start = INT_USB_IRQ_ISO, | |
72 | .flags = IORESOURCE_IRQ, | |
73 | }, | |
74 | }; | |
75 | ||
76 | static u64 udc_dmamask = ~(u32)0; | |
77 | ||
78 | static struct platform_device udc_device = { | |
79 | .name = "omap_udc", | |
80 | .id = -1, | |
81 | .dev = { | |
82 | .dma_mask = &udc_dmamask, | |
83 | .coherent_dma_mask = 0xffffffff, | |
84 | }, | |
85 | .num_resources = ARRAY_SIZE(udc_resources), | |
86 | .resource = udc_resources, | |
87 | }; | |
88 | ||
89 | static inline void udc_device_init(struct omap_usb_config *pdata) | |
90 | { | |
91 | /* IRQ numbers for omap7xx */ | |
92 | if(cpu_is_omap7xx()) { | |
93 | udc_resources[1].start = INT_7XX_USB_GENI; | |
94 | udc_resources[2].start = INT_7XX_USB_NON_ISO; | |
95 | udc_resources[3].start = INT_7XX_USB_ISO; | |
96 | } | |
97 | pdata->udc_device = &udc_device; | |
98 | } | |
99 | ||
100 | #else | |
101 | ||
102 | static inline void udc_device_init(struct omap_usb_config *pdata) | |
103 | { | |
104 | } | |
105 | ||
106 | #endif | |
107 | ||
108 | #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) | |
109 | ||
110 | /* The dmamask must be set for OHCI to work */ | |
111 | static u64 ohci_dmamask = ~(u32)0; | |
112 | ||
113 | static struct resource ohci_resources[] = { | |
114 | { | |
115 | .start = OMAP_OHCI_BASE, | |
116 | .end = OMAP_OHCI_BASE + 0xff, | |
117 | .flags = IORESOURCE_MEM, | |
118 | }, | |
119 | { | |
120 | .start = INT_USB_IRQ_HGEN, | |
121 | .flags = IORESOURCE_IRQ, | |
122 | }, | |
123 | }; | |
124 | ||
125 | static struct platform_device ohci_device = { | |
126 | .name = "ohci", | |
127 | .id = -1, | |
128 | .dev = { | |
129 | .dma_mask = &ohci_dmamask, | |
130 | .coherent_dma_mask = 0xffffffff, | |
131 | }, | |
132 | .num_resources = ARRAY_SIZE(ohci_resources), | |
133 | .resource = ohci_resources, | |
134 | }; | |
135 | ||
136 | static inline void ohci_device_init(struct omap_usb_config *pdata) | |
137 | { | |
138 | if (cpu_is_omap7xx()) | |
139 | ohci_resources[1].start = INT_7XX_USB_HHC_1; | |
140 | pdata->ohci_device = &ohci_device; | |
141 | } | |
142 | ||
143 | #else | |
144 | ||
145 | static inline void ohci_device_init(struct omap_usb_config *pdata) | |
146 | { | |
147 | } | |
148 | ||
149 | #endif | |
150 | ||
151 | #if defined(CONFIG_USB_OTG) && defined(CONFIG_ARCH_OMAP_OTG) | |
152 | ||
153 | static struct resource otg_resources[] = { | |
154 | /* order is significant! */ | |
155 | { | |
156 | .start = OTG_BASE, | |
157 | .end = OTG_BASE + 0xff, | |
158 | .flags = IORESOURCE_MEM, | |
159 | }, { | |
160 | .start = INT_USB_IRQ_OTG, | |
161 | .flags = IORESOURCE_IRQ, | |
162 | }, | |
163 | }; | |
164 | ||
165 | static struct platform_device otg_device = { | |
166 | .name = "omap_otg", | |
167 | .id = -1, | |
168 | .num_resources = ARRAY_SIZE(otg_resources), | |
169 | .resource = otg_resources, | |
170 | }; | |
171 | ||
172 | static inline void otg_device_init(struct omap_usb_config *pdata) | |
173 | { | |
174 | if (cpu_is_omap7xx()) | |
175 | otg_resources[1].start = INT_7XX_USB_OTG; | |
176 | pdata->otg_device = &otg_device; | |
177 | } | |
178 | ||
179 | #else | |
180 | ||
181 | static inline void otg_device_init(struct omap_usb_config *pdata) | |
182 | { | |
183 | } | |
184 | ||
185 | #endif | |
186 | ||
187 | u32 __init omap1_usb0_init(unsigned nwires, unsigned is_device) | |
188 | { | |
189 | u32 syscon1 = 0; | |
190 | ||
191 | if (nwires == 0) { | |
192 | if (!cpu_is_omap15xx()) { | |
193 | u32 l; | |
194 | ||
195 | /* pulldown D+/D- */ | |
196 | l = omap_readl(USB_TRANSCEIVER_CTRL); | |
197 | l &= ~(3 << 1); | |
198 | omap_writel(l, USB_TRANSCEIVER_CTRL); | |
199 | } | |
200 | return 0; | |
201 | } | |
202 | ||
203 | if (is_device) { | |
204 | if (cpu_is_omap7xx()) { | |
205 | omap_cfg_reg(AA17_7XX_USB_DM); | |
206 | omap_cfg_reg(W16_7XX_USB_PU_EN); | |
207 | omap_cfg_reg(W17_7XX_USB_VBUSI); | |
208 | omap_cfg_reg(W18_7XX_USB_DMCK_OUT); | |
209 | omap_cfg_reg(W19_7XX_USB_DCRST); | |
210 | } else | |
211 | omap_cfg_reg(W4_USB_PUEN); | |
212 | } | |
213 | ||
214 | if (nwires == 2) { | |
215 | u32 l; | |
216 | ||
217 | // omap_cfg_reg(P9_USB_DP); | |
218 | // omap_cfg_reg(R8_USB_DM); | |
219 | ||
220 | if (cpu_is_omap15xx()) { | |
221 | /* This works on 1510-Innovator */ | |
222 | return 0; | |
223 | } | |
224 | ||
225 | /* NOTES: | |
226 | * - peripheral should configure VBUS detection! | |
227 | * - only peripherals may use the internal D+/D- pulldowns | |
228 | * - OTG support on this port not yet written | |
229 | */ | |
230 | ||
231 | /* Don't do this for omap7xx -- it causes USB to not work correctly */ | |
232 | if (!cpu_is_omap7xx()) { | |
233 | l = omap_readl(USB_TRANSCEIVER_CTRL); | |
234 | l &= ~(7 << 4); | |
235 | if (!is_device) | |
236 | l |= (3 << 1); | |
237 | omap_writel(l, USB_TRANSCEIVER_CTRL); | |
238 | } | |
239 | ||
240 | return 3 << 16; | |
241 | } | |
242 | ||
243 | /* alternate pin config, external transceiver */ | |
244 | if (cpu_is_omap15xx()) { | |
245 | printk(KERN_ERR "no usb0 alt pin config on 15xx\n"); | |
246 | return 0; | |
247 | } | |
248 | ||
249 | omap_cfg_reg(V6_USB0_TXD); | |
250 | omap_cfg_reg(W9_USB0_TXEN); | |
251 | omap_cfg_reg(W5_USB0_SE0); | |
252 | if (nwires != 3) | |
253 | omap_cfg_reg(Y5_USB0_RCV); | |
254 | ||
255 | /* NOTE: SPEED and SUSP aren't configured here. OTG hosts | |
256 | * may be able to use I2C requests to set those bits along | |
257 | * with VBUS switching and overcurrent detection. | |
258 | */ | |
259 | ||
260 | if (nwires != 6) { | |
261 | u32 l; | |
262 | ||
263 | l = omap_readl(USB_TRANSCEIVER_CTRL); | |
264 | l &= ~CONF_USB2_UNI_R; | |
265 | omap_writel(l, USB_TRANSCEIVER_CTRL); | |
266 | } | |
267 | ||
268 | switch (nwires) { | |
269 | case 3: | |
270 | syscon1 = 2; | |
271 | break; | |
272 | case 4: | |
273 | syscon1 = 1; | |
274 | break; | |
275 | case 6: | |
276 | syscon1 = 3; | |
277 | { | |
278 | u32 l; | |
279 | ||
280 | omap_cfg_reg(AA9_USB0_VP); | |
281 | omap_cfg_reg(R9_USB0_VM); | |
282 | l = omap_readl(USB_TRANSCEIVER_CTRL); | |
283 | l |= CONF_USB2_UNI_R; | |
284 | omap_writel(l, USB_TRANSCEIVER_CTRL); | |
285 | } | |
286 | break; | |
287 | default: | |
288 | printk(KERN_ERR "illegal usb%d %d-wire transceiver\n", | |
289 | 0, nwires); | |
290 | } | |
291 | ||
292 | return syscon1 << 16; | |
293 | } | |
294 | ||
295 | u32 __init omap1_usb1_init(unsigned nwires) | |
296 | { | |
297 | u32 syscon1 = 0; | |
298 | ||
299 | if (!cpu_is_omap15xx() && nwires != 6) { | |
300 | u32 l; | |
301 | ||
302 | l = omap_readl(USB_TRANSCEIVER_CTRL); | |
303 | l &= ~CONF_USB1_UNI_R; | |
304 | omap_writel(l, USB_TRANSCEIVER_CTRL); | |
305 | } | |
306 | if (nwires == 0) | |
307 | return 0; | |
308 | ||
309 | /* external transceiver */ | |
310 | omap_cfg_reg(USB1_TXD); | |
311 | omap_cfg_reg(USB1_TXEN); | |
312 | if (nwires != 3) | |
313 | omap_cfg_reg(USB1_RCV); | |
314 | ||
315 | if (cpu_is_omap15xx()) { | |
316 | omap_cfg_reg(USB1_SEO); | |
317 | omap_cfg_reg(USB1_SPEED); | |
318 | // SUSP | |
319 | } else if (cpu_is_omap1610() || cpu_is_omap5912()) { | |
320 | omap_cfg_reg(W13_1610_USB1_SE0); | |
321 | omap_cfg_reg(R13_1610_USB1_SPEED); | |
322 | // SUSP | |
323 | } else if (cpu_is_omap1710()) { | |
324 | omap_cfg_reg(R13_1710_USB1_SE0); | |
325 | // SUSP | |
326 | } else { | |
327 | pr_debug("usb%d cpu unrecognized\n", 1); | |
328 | return 0; | |
329 | } | |
330 | ||
331 | switch (nwires) { | |
332 | case 2: | |
333 | goto bad; | |
334 | case 3: | |
335 | syscon1 = 2; | |
336 | break; | |
337 | case 4: | |
338 | syscon1 = 1; | |
339 | break; | |
340 | case 6: | |
341 | syscon1 = 3; | |
342 | omap_cfg_reg(USB1_VP); | |
343 | omap_cfg_reg(USB1_VM); | |
344 | if (!cpu_is_omap15xx()) { | |
345 | u32 l; | |
346 | ||
347 | l = omap_readl(USB_TRANSCEIVER_CTRL); | |
348 | l |= CONF_USB1_UNI_R; | |
349 | omap_writel(l, USB_TRANSCEIVER_CTRL); | |
350 | } | |
351 | break; | |
352 | default: | |
353 | bad: | |
354 | printk(KERN_ERR "illegal usb%d %d-wire transceiver\n", | |
355 | 1, nwires); | |
356 | } | |
357 | ||
358 | return syscon1 << 20; | |
359 | } | |
360 | ||
361 | u32 __init omap1_usb2_init(unsigned nwires, unsigned alt_pingroup) | |
362 | { | |
363 | u32 syscon1 = 0; | |
364 | ||
365 | /* NOTE omap1 erratum: must leave USB2_UNI_R set if usb0 in use */ | |
366 | if (alt_pingroup || nwires == 0) | |
367 | return 0; | |
368 | ||
369 | if (!cpu_is_omap15xx() && nwires != 6) { | |
370 | u32 l; | |
371 | ||
372 | l = omap_readl(USB_TRANSCEIVER_CTRL); | |
373 | l &= ~CONF_USB2_UNI_R; | |
374 | omap_writel(l, USB_TRANSCEIVER_CTRL); | |
375 | } | |
376 | ||
377 | /* external transceiver */ | |
378 | if (cpu_is_omap15xx()) { | |
379 | omap_cfg_reg(USB2_TXD); | |
380 | omap_cfg_reg(USB2_TXEN); | |
381 | omap_cfg_reg(USB2_SEO); | |
382 | if (nwires != 3) | |
383 | omap_cfg_reg(USB2_RCV); | |
384 | /* there is no USB2_SPEED */ | |
385 | } else if (cpu_is_omap16xx()) { | |
386 | omap_cfg_reg(V6_USB2_TXD); | |
387 | omap_cfg_reg(W9_USB2_TXEN); | |
388 | omap_cfg_reg(W5_USB2_SE0); | |
389 | if (nwires != 3) | |
390 | omap_cfg_reg(Y5_USB2_RCV); | |
391 | // FIXME omap_cfg_reg(USB2_SPEED); | |
392 | } else { | |
393 | pr_debug("usb%d cpu unrecognized\n", 1); | |
394 | return 0; | |
395 | } | |
396 | ||
397 | // omap_cfg_reg(USB2_SUSP); | |
398 | ||
399 | switch (nwires) { | |
400 | case 2: | |
401 | goto bad; | |
402 | case 3: | |
403 | syscon1 = 2; | |
404 | break; | |
405 | case 4: | |
406 | syscon1 = 1; | |
407 | break; | |
408 | case 5: | |
409 | goto bad; | |
410 | case 6: | |
411 | syscon1 = 3; | |
412 | if (cpu_is_omap15xx()) { | |
413 | omap_cfg_reg(USB2_VP); | |
414 | omap_cfg_reg(USB2_VM); | |
415 | } else { | |
416 | u32 l; | |
417 | ||
418 | omap_cfg_reg(AA9_USB2_VP); | |
419 | omap_cfg_reg(R9_USB2_VM); | |
420 | l = omap_readl(USB_TRANSCEIVER_CTRL); | |
421 | l |= CONF_USB2_UNI_R; | |
422 | omap_writel(l, USB_TRANSCEIVER_CTRL); | |
423 | } | |
424 | break; | |
425 | default: | |
426 | bad: | |
427 | printk(KERN_ERR "illegal usb%d %d-wire transceiver\n", | |
428 | 2, nwires); | |
429 | } | |
430 | ||
431 | return syscon1 << 24; | |
432 | } | |
433 | ||
434 | #ifdef CONFIG_ARCH_OMAP15XX | |
435 | ||
436 | /* ULPD_DPLL_CTRL */ | |
437 | #define DPLL_IOB (1 << 13) | |
438 | #define DPLL_PLL_ENABLE (1 << 4) | |
439 | #define DPLL_LOCK (1 << 0) | |
440 | ||
441 | /* ULPD_APLL_CTRL */ | |
442 | #define APLL_NDPLL_SWITCH (1 << 0) | |
443 | ||
444 | static void __init omap_1510_usb_init(struct omap_usb_config *config) | |
445 | { | |
446 | unsigned int val; | |
447 | u16 w; | |
448 | ||
449 | config->usb0_init(config->pins[0], is_usb0_device(config)); | |
450 | config->usb1_init(config->pins[1]); | |
451 | config->usb2_init(config->pins[2], 0); | |
452 | ||
453 | val = omap_readl(MOD_CONF_CTRL_0) & ~(0x3f << 1); | |
454 | val |= (config->hmc_mode << 1); | |
455 | omap_writel(val, MOD_CONF_CTRL_0); | |
456 | ||
457 | printk("USB: hmc %d", config->hmc_mode); | |
458 | if (config->pins[0]) | |
459 | printk(", usb0 %d wires%s", config->pins[0], | |
460 | is_usb0_device(config) ? " (dev)" : ""); | |
461 | if (config->pins[1]) | |
462 | printk(", usb1 %d wires", config->pins[1]); | |
463 | if (config->pins[2]) | |
464 | printk(", usb2 %d wires", config->pins[2]); | |
465 | printk("\n"); | |
466 | ||
467 | /* use DPLL for 48 MHz function clock */ | |
468 | pr_debug("APLL %04x DPLL %04x REQ %04x\n", omap_readw(ULPD_APLL_CTRL), | |
469 | omap_readw(ULPD_DPLL_CTRL), omap_readw(ULPD_SOFT_REQ)); | |
470 | ||
471 | w = omap_readw(ULPD_APLL_CTRL); | |
472 | w &= ~APLL_NDPLL_SWITCH; | |
473 | omap_writew(w, ULPD_APLL_CTRL); | |
474 | ||
475 | w = omap_readw(ULPD_DPLL_CTRL); | |
476 | w |= DPLL_IOB | DPLL_PLL_ENABLE; | |
477 | omap_writew(w, ULPD_DPLL_CTRL); | |
478 | ||
479 | w = omap_readw(ULPD_SOFT_REQ); | |
480 | w |= SOFT_UDC_REQ | SOFT_DPLL_REQ; | |
481 | omap_writew(w, ULPD_SOFT_REQ); | |
482 | ||
483 | while (!(omap_readw(ULPD_DPLL_CTRL) & DPLL_LOCK)) | |
484 | cpu_relax(); | |
485 | ||
486 | #ifdef CONFIG_USB_GADGET_OMAP | |
487 | if (config->register_dev) { | |
488 | int status; | |
489 | ||
490 | udc_device.dev.platform_data = config; | |
491 | status = platform_device_register(&udc_device); | |
492 | if (status) | |
493 | pr_debug("can't register UDC device, %d\n", status); | |
494 | /* udc driver gates 48MHz by D+ pullup */ | |
495 | } | |
496 | #endif | |
497 | ||
498 | #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) | |
499 | if (config->register_host) { | |
500 | int status; | |
501 | ||
502 | ohci_device.dev.platform_data = config; | |
503 | status = platform_device_register(&ohci_device); | |
504 | if (status) | |
505 | pr_debug("can't register OHCI device, %d\n", status); | |
506 | /* hcd explicitly gates 48MHz */ | |
507 | } | |
508 | #endif | |
509 | } | |
510 | ||
511 | #else | |
512 | static inline void omap_1510_usb_init(struct omap_usb_config *config) {} | |
513 | #endif | |
514 | ||
515 | void __init omap1_usb_init(struct omap_usb_config *pdata) | |
516 | { | |
517 | pdata->usb0_init = omap1_usb0_init; | |
518 | pdata->usb1_init = omap1_usb1_init; | |
519 | pdata->usb2_init = omap1_usb2_init; | |
520 | udc_device_init(pdata); | |
521 | ohci_device_init(pdata); | |
522 | otg_device_init(pdata); | |
523 | ||
524 | if (cpu_is_omap7xx() || cpu_is_omap16xx()) | |
525 | omap_otg_init(pdata); | |
526 | else if (cpu_is_omap15xx()) | |
527 | omap_1510_usb_init(pdata); | |
528 | else | |
529 | printk(KERN_ERR "USB: No init for your chip yet\n"); | |
530 | } |