]>
Commit | Line | Data |
---|---|---|
5e1c5ff4 TL |
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 | ||
5e1c5ff4 TL |
23 | #include <linux/module.h> |
24 | #include <linux/kernel.h> | |
25 | #include <linux/types.h> | |
26 | #include <linux/errno.h> | |
27 | #include <linux/init.h> | |
d052d1be | 28 | #include <linux/platform_device.h> |
3a16f7b4 | 29 | #include <linux/usb/otg.h> |
5e1c5ff4 TL |
30 | |
31 | #include <asm/io.h> | |
32 | #include <asm/irq.h> | |
33 | #include <asm/system.h> | |
34 | #include <asm/hardware.h> | |
5e1c5ff4 TL |
35 | |
36 | #include <asm/arch/mux.h> | |
37 | #include <asm/arch/usb.h> | |
38 | #include <asm/arch/board.h> | |
39 | ||
c40fae95 TL |
40 | #ifdef CONFIG_ARCH_OMAP1 |
41 | ||
42 | #define INT_USB_IRQ_GEN IH2_BASE + 20 | |
43 | #define INT_USB_IRQ_NISO IH2_BASE + 30 | |
44 | #define INT_USB_IRQ_ISO IH2_BASE + 29 | |
45 | #define INT_USB_IRQ_HGEN INT_USB_HHC_1 | |
46 | #define INT_USB_IRQ_OTG IH2_BASE + 8 | |
47 | ||
48 | #else | |
49 | ||
50 | #define INT_USB_IRQ_GEN INT_24XX_USB_IRQ_GEN | |
51 | #define INT_USB_IRQ_NISO INT_24XX_USB_IRQ_NISO | |
52 | #define INT_USB_IRQ_ISO INT_24XX_USB_IRQ_ISO | |
53 | #define INT_USB_IRQ_HGEN INT_24XX_USB_IRQ_HGEN | |
54 | #define INT_USB_IRQ_OTG INT_24XX_USB_IRQ_OTG | |
55 | ||
56 | #endif | |
57 | ||
58 | ||
5e1c5ff4 TL |
59 | /* These routines should handle the standard chip-specific modes |
60 | * for usb0/1/2 ports, covering basic mux and transceiver setup. | |
61 | * | |
62 | * Some board-*.c files will need to set up additional mux options, | |
63 | * like for suspend handling, vbus sensing, GPIOs, and the D+ pullup. | |
64 | */ | |
65 | ||
66 | /* TESTED ON: | |
67 | * - 1611B H2 (with usb1 mini-AB) using standard Mini-B or OTG cables | |
68 | * - 5912 OSK OHCI (with usb0 standard-A), standard A-to-B cables | |
69 | * - 5912 OSK UDC, with *nonstandard* A-to-A cable | |
70 | * - 1510 Innovator UDC with bundled usb0 cable | |
71 | * - 1510 Innovator OHCI with bundled usb1/usb2 cable | |
72 | * - 1510 Innovator OHCI with custom usb0 cable, feeding 5V VBUS | |
73 | * - 1710 custom development board using alternate pin group | |
74 | * - 1710 H3 (with usb1 mini-AB) using standard Mini-B or OTG cables | |
75 | */ | |
76 | ||
77 | /*-------------------------------------------------------------------------*/ | |
78 | ||
79 | #ifdef CONFIG_ARCH_OMAP_OTG | |
80 | ||
81 | static struct otg_transceiver *xceiv; | |
82 | ||
83 | /** | |
84 | * otg_get_transceiver - find the (single) OTG transceiver driver | |
85 | * | |
86 | * Returns the transceiver driver, after getting a refcount to it; or | |
87 | * null if there is no such transceiver. The caller is responsible for | |
88 | * releasing that count. | |
89 | */ | |
90 | struct otg_transceiver *otg_get_transceiver(void) | |
91 | { | |
92 | if (xceiv) | |
93 | get_device(xceiv->dev); | |
94 | return xceiv; | |
95 | } | |
96 | EXPORT_SYMBOL(otg_get_transceiver); | |
97 | ||
98 | int otg_set_transceiver(struct otg_transceiver *x) | |
99 | { | |
100 | if (xceiv && x) | |
101 | return -EBUSY; | |
102 | xceiv = x; | |
103 | return 0; | |
104 | } | |
105 | EXPORT_SYMBOL(otg_set_transceiver); | |
106 | ||
107 | #endif | |
108 | ||
109 | /*-------------------------------------------------------------------------*/ | |
110 | ||
1a8bfa1e TL |
111 | #if defined(CONFIG_ARCH_OMAP_OTG) || defined(CONFIG_ARCH_OMAP15XX) |
112 | ||
5e1c5ff4 TL |
113 | static u32 __init omap_usb0_init(unsigned nwires, unsigned is_device) |
114 | { | |
115 | u32 syscon1 = 0; | |
116 | ||
c40fae95 TL |
117 | if (cpu_is_omap24xx()) |
118 | CONTROL_DEVCONF_REG &= ~USBT0WRMODEI(USB_BIDIR_TLL); | |
119 | ||
5e1c5ff4 | 120 | if (nwires == 0) { |
c40fae95 | 121 | if (cpu_class_is_omap1() && !cpu_is_omap15xx()) { |
5e1c5ff4 TL |
122 | /* pulldown D+/D- */ |
123 | USB_TRANSCEIVER_CTRL_REG &= ~(3 << 1); | |
124 | } | |
125 | return 0; | |
126 | } | |
127 | ||
c40fae95 TL |
128 | if (is_device) { |
129 | if (cpu_is_omap24xx()) | |
130 | omap_cfg_reg(J20_24XX_USB0_PUEN); | |
131 | else | |
132 | omap_cfg_reg(W4_USB_PUEN); | |
133 | } | |
5e1c5ff4 | 134 | |
c40fae95 TL |
135 | /* internal transceiver (unavailable on 17xx, 24xx) */ |
136 | if (!cpu_class_is_omap2() && nwires == 2) { | |
5e1c5ff4 TL |
137 | // omap_cfg_reg(P9_USB_DP); |
138 | // omap_cfg_reg(R8_USB_DM); | |
139 | ||
140 | if (cpu_is_omap15xx()) { | |
141 | /* This works on 1510-Innovator */ | |
142 | return 0; | |
143 | } | |
144 | ||
145 | /* NOTES: | |
146 | * - peripheral should configure VBUS detection! | |
147 | * - only peripherals may use the internal D+/D- pulldowns | |
148 | * - OTG support on this port not yet written | |
149 | */ | |
150 | ||
151 | USB_TRANSCEIVER_CTRL_REG &= ~(7 << 4); | |
152 | if (!is_device) | |
153 | USB_TRANSCEIVER_CTRL_REG |= (3 << 1); | |
154 | ||
155 | return 3 << 16; | |
156 | } | |
157 | ||
158 | /* alternate pin config, external transceiver */ | |
159 | if (cpu_is_omap15xx()) { | |
160 | printk(KERN_ERR "no usb0 alt pin config on 15xx\n"); | |
161 | return 0; | |
162 | } | |
163 | ||
c40fae95 TL |
164 | if (cpu_is_omap24xx()) { |
165 | omap_cfg_reg(K18_24XX_USB0_DAT); | |
166 | omap_cfg_reg(K19_24XX_USB0_TXEN); | |
167 | omap_cfg_reg(J14_24XX_USB0_SE0); | |
168 | if (nwires != 3) | |
169 | omap_cfg_reg(J18_24XX_USB0_RCV); | |
170 | } else { | |
171 | omap_cfg_reg(V6_USB0_TXD); | |
172 | omap_cfg_reg(W9_USB0_TXEN); | |
173 | omap_cfg_reg(W5_USB0_SE0); | |
174 | if (nwires != 3) | |
175 | omap_cfg_reg(Y5_USB0_RCV); | |
176 | } | |
5e1c5ff4 | 177 | |
c40fae95 TL |
178 | /* NOTE: SPEED and SUSP aren't configured here. OTG hosts |
179 | * may be able to use I2C requests to set those bits along | |
6cbdc8c5 | 180 | * with VBUS switching and overcurrent detection. |
c40fae95 | 181 | */ |
5e1c5ff4 | 182 | |
c40fae95 | 183 | if (cpu_class_is_omap1() && nwires != 6) |
5e1c5ff4 TL |
184 | USB_TRANSCEIVER_CTRL_REG &= ~CONF_USB2_UNI_R; |
185 | ||
186 | switch (nwires) { | |
187 | case 3: | |
188 | syscon1 = 2; | |
c40fae95 TL |
189 | if (cpu_is_omap24xx()) |
190 | CONTROL_DEVCONF_REG |= USBT0WRMODEI(USB_BIDIR); | |
5e1c5ff4 TL |
191 | break; |
192 | case 4: | |
193 | syscon1 = 1; | |
c40fae95 TL |
194 | if (cpu_is_omap24xx()) |
195 | CONTROL_DEVCONF_REG |= USBT0WRMODEI(USB_BIDIR); | |
5e1c5ff4 TL |
196 | break; |
197 | case 6: | |
198 | syscon1 = 3; | |
c40fae95 TL |
199 | if (cpu_is_omap24xx()) { |
200 | omap_cfg_reg(J19_24XX_USB0_VP); | |
201 | omap_cfg_reg(K20_24XX_USB0_VM); | |
202 | CONTROL_DEVCONF_REG |= USBT0WRMODEI(USB_UNIDIR); | |
203 | } else { | |
204 | omap_cfg_reg(AA9_USB0_VP); | |
205 | omap_cfg_reg(R9_USB0_VM); | |
206 | USB_TRANSCEIVER_CTRL_REG |= CONF_USB2_UNI_R; | |
207 | } | |
5e1c5ff4 TL |
208 | break; |
209 | default: | |
210 | printk(KERN_ERR "illegal usb%d %d-wire transceiver\n", | |
211 | 0, nwires); | |
212 | } | |
213 | return syscon1 << 16; | |
214 | } | |
215 | ||
216 | static u32 __init omap_usb1_init(unsigned nwires) | |
217 | { | |
218 | u32 syscon1 = 0; | |
219 | ||
c40fae95 | 220 | if (cpu_class_is_omap1() && !cpu_is_omap15xx() && nwires != 6) |
5e1c5ff4 | 221 | USB_TRANSCEIVER_CTRL_REG &= ~CONF_USB1_UNI_R; |
c40fae95 TL |
222 | if (cpu_is_omap24xx()) |
223 | CONTROL_DEVCONF_REG &= ~USBT1WRMODEI(USB_BIDIR_TLL); | |
224 | ||
5e1c5ff4 TL |
225 | if (nwires == 0) |
226 | return 0; | |
227 | ||
228 | /* external transceiver */ | |
c40fae95 TL |
229 | if (cpu_class_is_omap1()) { |
230 | omap_cfg_reg(USB1_TXD); | |
231 | omap_cfg_reg(USB1_TXEN); | |
232 | if (nwires != 3) | |
233 | omap_cfg_reg(USB1_RCV); | |
234 | } | |
235 | ||
5e1c5ff4 TL |
236 | if (cpu_is_omap15xx()) { |
237 | omap_cfg_reg(USB1_SEO); | |
238 | omap_cfg_reg(USB1_SPEED); | |
239 | // SUSP | |
240 | } else if (cpu_is_omap1610() || cpu_is_omap5912()) { | |
241 | omap_cfg_reg(W13_1610_USB1_SE0); | |
242 | omap_cfg_reg(R13_1610_USB1_SPEED); | |
243 | // SUSP | |
244 | } else if (cpu_is_omap1710()) { | |
245 | omap_cfg_reg(R13_1710_USB1_SE0); | |
246 | // SUSP | |
c40fae95 TL |
247 | } else if (cpu_is_omap24xx()) { |
248 | /* NOTE: board-specific code must set up pin muxing for usb1, | |
249 | * since each signal could come out on either of two balls. | |
250 | */ | |
5e1c5ff4 | 251 | } else { |
c40fae95 TL |
252 | pr_debug("usb%d cpu unrecognized\n", 1); |
253 | return 0; | |
5e1c5ff4 | 254 | } |
5e1c5ff4 TL |
255 | |
256 | switch (nwires) { | |
c40fae95 TL |
257 | case 2: |
258 | if (!cpu_is_omap24xx()) | |
259 | goto bad; | |
260 | /* NOTE: board-specific code must override this setting if | |
261 | * this TLL link is not using DP/DM | |
262 | */ | |
263 | syscon1 = 1; | |
264 | CONTROL_DEVCONF_REG |= USBT1WRMODEI(USB_BIDIR_TLL); | |
265 | break; | |
5e1c5ff4 TL |
266 | case 3: |
267 | syscon1 = 2; | |
c40fae95 TL |
268 | if (cpu_is_omap24xx()) |
269 | CONTROL_DEVCONF_REG |= USBT1WRMODEI(USB_BIDIR); | |
5e1c5ff4 TL |
270 | break; |
271 | case 4: | |
272 | syscon1 = 1; | |
c40fae95 TL |
273 | if (cpu_is_omap24xx()) |
274 | CONTROL_DEVCONF_REG |= USBT1WRMODEI(USB_BIDIR); | |
5e1c5ff4 TL |
275 | break; |
276 | case 6: | |
c40fae95 TL |
277 | if (cpu_is_omap24xx()) |
278 | goto bad; | |
5e1c5ff4 TL |
279 | syscon1 = 3; |
280 | omap_cfg_reg(USB1_VP); | |
281 | omap_cfg_reg(USB1_VM); | |
282 | if (!cpu_is_omap15xx()) | |
283 | USB_TRANSCEIVER_CTRL_REG |= CONF_USB1_UNI_R; | |
284 | break; | |
285 | default: | |
c40fae95 | 286 | bad: |
5e1c5ff4 TL |
287 | printk(KERN_ERR "illegal usb%d %d-wire transceiver\n", |
288 | 1, nwires); | |
289 | } | |
290 | return syscon1 << 20; | |
291 | } | |
292 | ||
293 | static u32 __init omap_usb2_init(unsigned nwires, unsigned alt_pingroup) | |
294 | { | |
295 | u32 syscon1 = 0; | |
296 | ||
c40fae95 TL |
297 | if (cpu_is_omap24xx()) { |
298 | CONTROL_DEVCONF_REG &= ~(USBT2WRMODEI(USB_BIDIR_TLL) | |
299 | | USBT2TLL5PI); | |
300 | alt_pingroup = 0; | |
301 | } | |
302 | ||
303 | /* NOTE omap1 erratum: must leave USB2_UNI_R set if usb0 in use */ | |
5e1c5ff4 TL |
304 | if (alt_pingroup || nwires == 0) |
305 | return 0; | |
c40fae95 TL |
306 | |
307 | if (cpu_class_is_omap1() && !cpu_is_omap15xx() && nwires != 6) | |
5e1c5ff4 TL |
308 | USB_TRANSCEIVER_CTRL_REG &= ~CONF_USB2_UNI_R; |
309 | ||
310 | /* external transceiver */ | |
311 | if (cpu_is_omap15xx()) { | |
312 | omap_cfg_reg(USB2_TXD); | |
313 | omap_cfg_reg(USB2_TXEN); | |
314 | omap_cfg_reg(USB2_SEO); | |
315 | if (nwires != 3) | |
316 | omap_cfg_reg(USB2_RCV); | |
317 | /* there is no USB2_SPEED */ | |
318 | } else if (cpu_is_omap16xx()) { | |
319 | omap_cfg_reg(V6_USB2_TXD); | |
320 | omap_cfg_reg(W9_USB2_TXEN); | |
321 | omap_cfg_reg(W5_USB2_SE0); | |
322 | if (nwires != 3) | |
323 | omap_cfg_reg(Y5_USB2_RCV); | |
324 | // FIXME omap_cfg_reg(USB2_SPEED); | |
c40fae95 TL |
325 | } else if (cpu_is_omap24xx()) { |
326 | omap_cfg_reg(Y11_24XX_USB2_DAT); | |
327 | omap_cfg_reg(AA10_24XX_USB2_SE0); | |
328 | if (nwires > 2) | |
329 | omap_cfg_reg(AA12_24XX_USB2_TXEN); | |
330 | if (nwires > 3) | |
331 | omap_cfg_reg(AA6_24XX_USB2_RCV); | |
5e1c5ff4 | 332 | } else { |
c40fae95 TL |
333 | pr_debug("usb%d cpu unrecognized\n", 1); |
334 | return 0; | |
5e1c5ff4 | 335 | } |
c40fae95 | 336 | // if (cpu_class_is_omap1()) omap_cfg_reg(USB2_SUSP); |
5e1c5ff4 TL |
337 | |
338 | switch (nwires) { | |
c40fae95 TL |
339 | case 2: |
340 | if (!cpu_is_omap24xx()) | |
341 | goto bad; | |
342 | /* NOTE: board-specific code must override this setting if | |
343 | * this TLL link is not using DP/DM | |
344 | */ | |
345 | syscon1 = 1; | |
346 | CONTROL_DEVCONF_REG |= USBT2WRMODEI(USB_BIDIR_TLL); | |
347 | break; | |
5e1c5ff4 TL |
348 | case 3: |
349 | syscon1 = 2; | |
c40fae95 TL |
350 | if (cpu_is_omap24xx()) |
351 | CONTROL_DEVCONF_REG |= USBT2WRMODEI(USB_BIDIR); | |
5e1c5ff4 TL |
352 | break; |
353 | case 4: | |
354 | syscon1 = 1; | |
c40fae95 TL |
355 | if (cpu_is_omap24xx()) |
356 | CONTROL_DEVCONF_REG |= USBT2WRMODEI(USB_BIDIR); | |
357 | break; | |
358 | case 5: | |
359 | if (!cpu_is_omap24xx()) | |
360 | goto bad; | |
361 | omap_cfg_reg(AA4_24XX_USB2_TLLSE0); | |
362 | /* NOTE: board-specific code must override this setting if | |
363 | * this TLL link is not using DP/DM. Something must also | |
364 | * set up OTG_SYSCON2.HMC_TLL{ATTACH,SPEED} | |
365 | */ | |
366 | syscon1 = 3; | |
367 | CONTROL_DEVCONF_REG |= USBT2WRMODEI(USB_UNIDIR_TLL) | |
368 | | USBT2TLL5PI; | |
5e1c5ff4 TL |
369 | break; |
370 | case 6: | |
c40fae95 TL |
371 | if (cpu_is_omap24xx()) |
372 | goto bad; | |
5e1c5ff4 TL |
373 | syscon1 = 3; |
374 | if (cpu_is_omap15xx()) { | |
375 | omap_cfg_reg(USB2_VP); | |
376 | omap_cfg_reg(USB2_VM); | |
377 | } else { | |
378 | omap_cfg_reg(AA9_USB2_VP); | |
379 | omap_cfg_reg(R9_USB2_VM); | |
380 | USB_TRANSCEIVER_CTRL_REG |= CONF_USB2_UNI_R; | |
381 | } | |
382 | break; | |
383 | default: | |
c40fae95 | 384 | bad: |
5e1c5ff4 TL |
385 | printk(KERN_ERR "illegal usb%d %d-wire transceiver\n", |
386 | 2, nwires); | |
387 | } | |
388 | return syscon1 << 24; | |
389 | } | |
390 | ||
1a8bfa1e TL |
391 | #endif |
392 | ||
5e1c5ff4 TL |
393 | /*-------------------------------------------------------------------------*/ |
394 | ||
395 | #if defined(CONFIG_USB_GADGET_OMAP) || \ | |
396 | defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) || \ | |
397 | (defined(CONFIG_USB_OTG) && defined(CONFIG_ARCH_OMAP_OTG)) | |
398 | static void usb_release(struct device *dev) | |
399 | { | |
400 | /* normally not freed */ | |
401 | } | |
402 | #endif | |
403 | ||
404 | #ifdef CONFIG_USB_GADGET_OMAP | |
405 | ||
406 | static struct resource udc_resources[] = { | |
407 | /* order is significant! */ | |
408 | { /* registers */ | |
409 | .start = UDC_BASE, | |
410 | .end = UDC_BASE + 0xff, | |
411 | .flags = IORESOURCE_MEM, | |
412 | }, { /* general IRQ */ | |
c40fae95 | 413 | .start = INT_USB_IRQ_GEN, |
5e1c5ff4 TL |
414 | .flags = IORESOURCE_IRQ, |
415 | }, { /* PIO IRQ */ | |
c40fae95 | 416 | .start = INT_USB_IRQ_NISO, |
5e1c5ff4 TL |
417 | .flags = IORESOURCE_IRQ, |
418 | }, { /* SOF IRQ */ | |
c40fae95 | 419 | .start = INT_USB_IRQ_ISO, |
5e1c5ff4 TL |
420 | .flags = IORESOURCE_IRQ, |
421 | }, | |
422 | }; | |
423 | ||
424 | static u64 udc_dmamask = ~(u32)0; | |
425 | ||
426 | static struct platform_device udc_device = { | |
427 | .name = "omap_udc", | |
428 | .id = -1, | |
429 | .dev = { | |
430 | .release = usb_release, | |
431 | .dma_mask = &udc_dmamask, | |
432 | .coherent_dma_mask = 0xffffffff, | |
433 | }, | |
434 | .num_resources = ARRAY_SIZE(udc_resources), | |
435 | .resource = udc_resources, | |
436 | }; | |
437 | ||
438 | #endif | |
439 | ||
440 | #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) | |
441 | ||
442 | /* The dmamask must be set for OHCI to work */ | |
443 | static u64 ohci_dmamask = ~(u32)0; | |
444 | ||
445 | static struct resource ohci_resources[] = { | |
446 | { | |
447 | .start = OMAP_OHCI_BASE, | |
c40fae95 | 448 | .end = OMAP_OHCI_BASE + 0xff, |
5e1c5ff4 TL |
449 | .flags = IORESOURCE_MEM, |
450 | }, | |
451 | { | |
c40fae95 | 452 | .start = INT_USB_IRQ_HGEN, |
5e1c5ff4 TL |
453 | .flags = IORESOURCE_IRQ, |
454 | }, | |
455 | }; | |
456 | ||
457 | static struct platform_device ohci_device = { | |
458 | .name = "ohci", | |
459 | .id = -1, | |
460 | .dev = { | |
461 | .release = usb_release, | |
462 | .dma_mask = &ohci_dmamask, | |
463 | .coherent_dma_mask = 0xffffffff, | |
464 | }, | |
465 | .num_resources = ARRAY_SIZE(ohci_resources), | |
466 | .resource = ohci_resources, | |
467 | }; | |
468 | ||
469 | #endif | |
470 | ||
471 | #if defined(CONFIG_USB_OTG) && defined(CONFIG_ARCH_OMAP_OTG) | |
472 | ||
473 | static struct resource otg_resources[] = { | |
474 | /* order is significant! */ | |
475 | { | |
476 | .start = OTG_BASE, | |
477 | .end = OTG_BASE + 0xff, | |
478 | .flags = IORESOURCE_MEM, | |
479 | }, { | |
c40fae95 | 480 | .start = INT_USB_IRQ_OTG, |
5e1c5ff4 TL |
481 | .flags = IORESOURCE_IRQ, |
482 | }, | |
483 | }; | |
484 | ||
485 | static struct platform_device otg_device = { | |
486 | .name = "omap_otg", | |
487 | .id = -1, | |
488 | .dev = { | |
489 | .release = usb_release, | |
490 | }, | |
491 | .num_resources = ARRAY_SIZE(otg_resources), | |
492 | .resource = otg_resources, | |
493 | }; | |
494 | ||
495 | #endif | |
496 | ||
497 | /*-------------------------------------------------------------------------*/ | |
498 | ||
499 | #define ULPD_CLOCK_CTRL_REG __REG16(ULPD_CLOCK_CTRL) | |
500 | #define ULPD_SOFT_REQ_REG __REG16(ULPD_SOFT_REQ) | |
501 | ||
502 | ||
503 | // FIXME correct answer depends on hmc_mode, | |
c40fae95 | 504 | // as does (on omap1) any nonzero value for config->otg port number |
5e1c5ff4 TL |
505 | #ifdef CONFIG_USB_GADGET_OMAP |
506 | #define is_usb0_device(config) 1 | |
507 | #else | |
508 | #define is_usb0_device(config) 0 | |
509 | #endif | |
510 | ||
511 | /*-------------------------------------------------------------------------*/ | |
512 | ||
513 | #ifdef CONFIG_ARCH_OMAP_OTG | |
514 | ||
515 | void __init | |
516 | omap_otg_init(struct omap_usb_config *config) | |
517 | { | |
518 | u32 syscon = OTG_SYSCON_1_REG & 0xffff; | |
519 | int status; | |
520 | int alt_pingroup = 0; | |
521 | ||
522 | /* NOTE: no bus or clock setup (yet?) */ | |
523 | ||
524 | syscon = OTG_SYSCON_1_REG & 0xffff; | |
525 | if (!(syscon & OTG_RESET_DONE)) | |
526 | pr_debug("USB resets not complete?\n"); | |
527 | ||
528 | // OTG_IRQ_EN_REG = 0; | |
529 | ||
530 | /* pin muxing and transceiver pinouts */ | |
531 | if (config->pins[0] > 2) /* alt pingroup 2 */ | |
532 | alt_pingroup = 1; | |
533 | syscon |= omap_usb0_init(config->pins[0], is_usb0_device(config)); | |
534 | syscon |= omap_usb1_init(config->pins[1]); | |
535 | syscon |= omap_usb2_init(config->pins[2], alt_pingroup); | |
536 | pr_debug("OTG_SYSCON_1_REG = %08x\n", syscon); | |
537 | OTG_SYSCON_1_REG = syscon; | |
538 | ||
539 | syscon = config->hmc_mode; | |
540 | syscon |= USBX_SYNCHRO | (4 << 16) /* B_ASE0_BRST */; | |
541 | #ifdef CONFIG_USB_OTG | |
542 | if (config->otg) | |
543 | syscon |= OTG_EN; | |
544 | #endif | |
c40fae95 TL |
545 | if (cpu_class_is_omap1()) |
546 | pr_debug("USB_TRANSCEIVER_CTRL_REG = %03x\n", USB_TRANSCEIVER_CTRL_REG); | |
5e1c5ff4 TL |
547 | pr_debug("OTG_SYSCON_2_REG = %08x\n", syscon); |
548 | OTG_SYSCON_2_REG = syscon; | |
549 | ||
550 | printk("USB: hmc %d", config->hmc_mode); | |
c40fae95 | 551 | if (!alt_pingroup) |
5e1c5ff4 TL |
552 | printk(", usb2 alt %d wires", config->pins[2]); |
553 | else if (config->pins[0]) | |
554 | printk(", usb0 %d wires%s", config->pins[0], | |
555 | is_usb0_device(config) ? " (dev)" : ""); | |
556 | if (config->pins[1]) | |
557 | printk(", usb1 %d wires", config->pins[1]); | |
558 | if (!alt_pingroup && config->pins[2]) | |
559 | printk(", usb2 %d wires", config->pins[2]); | |
560 | if (config->otg) | |
561 | printk(", Mini-AB on usb%d", config->otg - 1); | |
562 | printk("\n"); | |
563 | ||
c40fae95 TL |
564 | if (cpu_class_is_omap1()) { |
565 | /* leave USB clocks/controllers off until needed */ | |
566 | ULPD_SOFT_REQ_REG &= ~SOFT_USB_CLK_REQ; | |
567 | ULPD_CLOCK_CTRL_REG &= ~USB_MCLK_EN; | |
568 | ULPD_CLOCK_CTRL_REG |= DIS_USB_PVCI_CLK; | |
569 | } | |
5e1c5ff4 TL |
570 | syscon = OTG_SYSCON_1_REG; |
571 | syscon |= HST_IDLE_EN|DEV_IDLE_EN|OTG_IDLE_EN; | |
572 | ||
573 | #ifdef CONFIG_USB_GADGET_OMAP | |
574 | if (config->otg || config->register_dev) { | |
575 | syscon &= ~DEV_IDLE_EN; | |
576 | udc_device.dev.platform_data = config; | |
577 | /* FIXME patch IRQ numbers for omap730 */ | |
578 | status = platform_device_register(&udc_device); | |
579 | if (status) | |
580 | pr_debug("can't register UDC device, %d\n", status); | |
581 | } | |
582 | #endif | |
583 | ||
584 | #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) | |
585 | if (config->otg || config->register_host) { | |
586 | syscon &= ~HST_IDLE_EN; | |
587 | ohci_device.dev.platform_data = config; | |
588 | if (cpu_is_omap730()) | |
589 | ohci_resources[1].start = INT_730_USB_HHC_1; | |
590 | status = platform_device_register(&ohci_device); | |
591 | if (status) | |
592 | pr_debug("can't register OHCI device, %d\n", status); | |
593 | } | |
594 | #endif | |
595 | ||
596 | #ifdef CONFIG_USB_OTG | |
597 | if (config->otg) { | |
598 | syscon &= ~OTG_IDLE_EN; | |
599 | otg_device.dev.platform_data = config; | |
600 | if (cpu_is_omap730()) | |
601 | otg_resources[1].start = INT_730_USB_OTG; | |
602 | status = platform_device_register(&otg_device); | |
603 | if (status) | |
604 | pr_debug("can't register OTG device, %d\n", status); | |
605 | } | |
606 | #endif | |
607 | pr_debug("OTG_SYSCON_1_REG = %08x\n", syscon); | |
608 | OTG_SYSCON_1_REG = syscon; | |
609 | ||
610 | status = 0; | |
611 | } | |
612 | ||
613 | #else | |
614 | static inline void omap_otg_init(struct omap_usb_config *config) {} | |
615 | #endif | |
616 | ||
617 | /*-------------------------------------------------------------------------*/ | |
618 | ||
1a8bfa1e | 619 | #ifdef CONFIG_ARCH_OMAP15XX |
5e1c5ff4 TL |
620 | |
621 | #define ULPD_DPLL_CTRL_REG __REG16(ULPD_DPLL_CTRL) | |
622 | #define DPLL_IOB (1 << 13) | |
623 | #define DPLL_PLL_ENABLE (1 << 4) | |
624 | #define DPLL_LOCK (1 << 0) | |
625 | ||
626 | #define ULPD_APLL_CTRL_REG __REG16(ULPD_APLL_CTRL) | |
627 | #define APLL_NDPLL_SWITCH (1 << 0) | |
628 | ||
629 | ||
630 | static void __init omap_1510_usb_init(struct omap_usb_config *config) | |
631 | { | |
5e1c5ff4 TL |
632 | unsigned int val; |
633 | ||
634 | omap_usb0_init(config->pins[0], is_usb0_device(config)); | |
635 | omap_usb1_init(config->pins[1]); | |
636 | omap_usb2_init(config->pins[2], 0); | |
637 | ||
638 | val = omap_readl(MOD_CONF_CTRL_0) & ~(0x3f << 1); | |
639 | val |= (config->hmc_mode << 1); | |
640 | omap_writel(val, MOD_CONF_CTRL_0); | |
641 | ||
642 | printk("USB: hmc %d", config->hmc_mode); | |
643 | if (config->pins[0]) | |
644 | printk(", usb0 %d wires%s", config->pins[0], | |
645 | is_usb0_device(config) ? " (dev)" : ""); | |
646 | if (config->pins[1]) | |
647 | printk(", usb1 %d wires", config->pins[1]); | |
648 | if (config->pins[2]) | |
649 | printk(", usb2 %d wires", config->pins[2]); | |
650 | printk("\n"); | |
651 | ||
652 | /* use DPLL for 48 MHz function clock */ | |
653 | pr_debug("APLL %04x DPLL %04x REQ %04x\n", ULPD_APLL_CTRL_REG, | |
654 | ULPD_DPLL_CTRL_REG, ULPD_SOFT_REQ_REG); | |
655 | ULPD_APLL_CTRL_REG &= ~APLL_NDPLL_SWITCH; | |
656 | ULPD_DPLL_CTRL_REG |= DPLL_IOB | DPLL_PLL_ENABLE; | |
657 | ULPD_SOFT_REQ_REG |= SOFT_UDC_REQ | SOFT_DPLL_REQ; | |
658 | while (!(ULPD_DPLL_CTRL_REG & DPLL_LOCK)) | |
659 | cpu_relax(); | |
660 | ||
661 | #ifdef CONFIG_USB_GADGET_OMAP | |
662 | if (config->register_dev) { | |
1a8bfa1e TL |
663 | int status; |
664 | ||
5e1c5ff4 TL |
665 | udc_device.dev.platform_data = config; |
666 | status = platform_device_register(&udc_device); | |
667 | if (status) | |
668 | pr_debug("can't register UDC device, %d\n", status); | |
669 | /* udc driver gates 48MHz by D+ pullup */ | |
670 | } | |
671 | #endif | |
672 | ||
673 | #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) | |
674 | if (config->register_host) { | |
1a8bfa1e TL |
675 | int status; |
676 | ||
5e1c5ff4 TL |
677 | ohci_device.dev.platform_data = config; |
678 | status = platform_device_register(&ohci_device); | |
679 | if (status) | |
680 | pr_debug("can't register OHCI device, %d\n", status); | |
681 | /* hcd explicitly gates 48MHz */ | |
682 | } | |
683 | #endif | |
684 | } | |
685 | ||
686 | #else | |
687 | static inline void omap_1510_usb_init(struct omap_usb_config *config) {} | |
688 | #endif | |
689 | ||
690 | /*-------------------------------------------------------------------------*/ | |
691 | ||
692 | static struct omap_usb_config platform_data; | |
693 | ||
694 | static int __init | |
695 | omap_usb_init(void) | |
696 | { | |
697 | const struct omap_usb_config *config; | |
698 | ||
699 | config = omap_get_config(OMAP_TAG_USB, struct omap_usb_config); | |
700 | if (config == NULL) { | |
701 | printk(KERN_ERR "USB: No board-specific " | |
702 | "platform config found\n"); | |
703 | return -ENODEV; | |
704 | } | |
705 | platform_data = *config; | |
706 | ||
c40fae95 | 707 | if (cpu_is_omap730() || cpu_is_omap16xx() || cpu_is_omap24xx()) |
5e1c5ff4 TL |
708 | omap_otg_init(&platform_data); |
709 | else if (cpu_is_omap15xx()) | |
710 | omap_1510_usb_init(&platform_data); | |
711 | else { | |
712 | printk(KERN_ERR "USB: No init for your chip yet\n"); | |
713 | return -ENODEV; | |
714 | } | |
715 | return 0; | |
716 | } | |
717 | ||
718 | subsys_initcall(omap_usb_init); |