aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm/plat-omap/usb.c
diff options
context:
space:
mode:
authorTony Lindgren <tony@atomide.com>2010-07-05 09:31:30 -0400
committerTony Lindgren <tony@atomide.com>2010-07-05 09:31:30 -0400
commitdd0cdd888251d0d62df417d6859e74e57146c13f (patch)
tree1ecfce96253efc5dbcd4b96eb52ed3f359f77442 /arch/arm/plat-omap/usb.c
parent98093839307cbf1a0d5cb50b495d14a78b755ed9 (diff)
omap: Move omap1 USB platform init code into mach-omap1/usb.c
Move omap1 FS USB platform init code into mach-omap1/usb.c Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/plat-omap/usb.c')
-rw-r--r--arch/arm/plat-omap/usb.c535
1 files changed, 0 insertions, 535 deletions
diff --git a/arch/arm/plat-omap/usb.c b/arch/arm/plat-omap/usb.c
index 27b471ce11a0..f3570884883e 100644
--- a/arch/arm/plat-omap/usb.c
+++ b/arch/arm/plat-omap/usb.c
@@ -22,434 +22,13 @@
22 22
23#include <linux/module.h> 23#include <linux/module.h>
24#include <linux/kernel.h> 24#include <linux/kernel.h>
25#include <linux/types.h>
26#include <linux/errno.h>
27#include <linux/init.h> 25#include <linux/init.h>
28#include <linux/platform_device.h> 26#include <linux/platform_device.h>
29#include <linux/usb/otg.h>
30#include <linux/io.h> 27#include <linux/io.h>
31 28
32#include <asm/irq.h>
33#include <asm/system.h>
34#include <mach/hardware.h>
35
36#include <plat/control.h>
37#include <plat/mux.h>
38#include <plat/usb.h> 29#include <plat/usb.h>
39#include <plat/board.h> 30#include <plat/board.h>
40 31
41#define INT_USB_IRQ_GEN IH2_BASE + 20
42#define INT_USB_IRQ_NISO IH2_BASE + 30
43#define INT_USB_IRQ_ISO IH2_BASE + 29
44#define INT_USB_IRQ_HGEN INT_USB_HHC_1
45#define INT_USB_IRQ_OTG IH2_BASE + 8
46
47/* These routines should handle the standard chip-specific modes
48 * for usb0/1/2 ports, covering basic mux and transceiver setup.
49 *
50 * Some board-*.c files will need to set up additional mux options,
51 * like for suspend handling, vbus sensing, GPIOs, and the D+ pullup.
52 */
53
54/* TESTED ON:
55 * - 1611B H2 (with usb1 mini-AB) using standard Mini-B or OTG cables
56 * - 5912 OSK OHCI (with usb0 standard-A), standard A-to-B cables
57 * - 5912 OSK UDC, with *nonstandard* A-to-A cable
58 * - 1510 Innovator UDC with bundled usb0 cable
59 * - 1510 Innovator OHCI with bundled usb1/usb2 cable
60 * - 1510 Innovator OHCI with custom usb0 cable, feeding 5V VBUS
61 * - 1710 custom development board using alternate pin group
62 * - 1710 H3 (with usb1 mini-AB) using standard Mini-B or OTG cables
63 */
64
65/*-------------------------------------------------------------------------*/
66
67#if defined(CONFIG_ARCH_OMAP_OTG) || defined(CONFIG_ARCH_OMAP15XX)
68
69static u32 __init omap_usb0_init(unsigned nwires, unsigned is_device)
70{
71 u32 syscon1 = 0;
72
73 if (nwires == 0) {
74 if (!cpu_is_omap15xx()) {
75 u32 l;
76
77 /* pulldown D+/D- */
78 l = omap_readl(USB_TRANSCEIVER_CTRL);
79 l &= ~(3 << 1);
80 omap_writel(l, USB_TRANSCEIVER_CTRL);
81 }
82 return 0;
83 }
84
85 if (is_device) {
86 if (cpu_is_omap7xx()) {
87 omap_cfg_reg(AA17_7XX_USB_DM);
88 omap_cfg_reg(W16_7XX_USB_PU_EN);
89 omap_cfg_reg(W17_7XX_USB_VBUSI);
90 omap_cfg_reg(W18_7XX_USB_DMCK_OUT);
91 omap_cfg_reg(W19_7XX_USB_DCRST);
92 } else
93 omap_cfg_reg(W4_USB_PUEN);
94 }
95
96 if (nwires == 2) {
97 u32 l;
98
99 // omap_cfg_reg(P9_USB_DP);
100 // omap_cfg_reg(R8_USB_DM);
101
102 if (cpu_is_omap15xx()) {
103 /* This works on 1510-Innovator */
104 return 0;
105 }
106
107 /* NOTES:
108 * - peripheral should configure VBUS detection!
109 * - only peripherals may use the internal D+/D- pulldowns
110 * - OTG support on this port not yet written
111 */
112
113 /* Don't do this for omap7xx -- it causes USB to not work correctly */
114 if (!cpu_is_omap7xx()) {
115 l = omap_readl(USB_TRANSCEIVER_CTRL);
116 l &= ~(7 << 4);
117 if (!is_device)
118 l |= (3 << 1);
119 omap_writel(l, USB_TRANSCEIVER_CTRL);
120 }
121
122 return 3 << 16;
123 }
124
125 /* alternate pin config, external transceiver */
126 if (cpu_is_omap15xx()) {
127 printk(KERN_ERR "no usb0 alt pin config on 15xx\n");
128 return 0;
129 }
130
131 omap_cfg_reg(V6_USB0_TXD);
132 omap_cfg_reg(W9_USB0_TXEN);
133 omap_cfg_reg(W5_USB0_SE0);
134 if (nwires != 3)
135 omap_cfg_reg(Y5_USB0_RCV);
136
137 /* NOTE: SPEED and SUSP aren't configured here. OTG hosts
138 * may be able to use I2C requests to set those bits along
139 * with VBUS switching and overcurrent detection.
140 */
141
142 if (nwires != 6) {
143 u32 l;
144
145 l = omap_readl(USB_TRANSCEIVER_CTRL);
146 l &= ~CONF_USB2_UNI_R;
147 omap_writel(l, USB_TRANSCEIVER_CTRL);
148 }
149
150 switch (nwires) {
151 case 3:
152 syscon1 = 2;
153 break;
154 case 4:
155 syscon1 = 1;
156 break;
157 case 6:
158 syscon1 = 3;
159 {
160 u32 l;
161
162 omap_cfg_reg(AA9_USB0_VP);
163 omap_cfg_reg(R9_USB0_VM);
164 l = omap_readl(USB_TRANSCEIVER_CTRL);
165 l |= CONF_USB2_UNI_R;
166 omap_writel(l, USB_TRANSCEIVER_CTRL);
167 }
168 break;
169 default:
170 printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
171 0, nwires);
172 }
173 return syscon1 << 16;
174}
175
176static u32 __init omap_usb1_init(unsigned nwires)
177{
178 u32 syscon1 = 0;
179
180 if (!cpu_is_omap15xx() && nwires != 6) {
181 u32 l;
182
183 l = omap_readl(USB_TRANSCEIVER_CTRL);
184 l &= ~CONF_USB1_UNI_R;
185 omap_writel(l, USB_TRANSCEIVER_CTRL);
186 }
187 if (nwires == 0)
188 return 0;
189
190 /* external transceiver */
191 omap_cfg_reg(USB1_TXD);
192 omap_cfg_reg(USB1_TXEN);
193 if (nwires != 3)
194 omap_cfg_reg(USB1_RCV);
195
196 if (cpu_is_omap15xx()) {
197 omap_cfg_reg(USB1_SEO);
198 omap_cfg_reg(USB1_SPEED);
199 // SUSP
200 } else if (cpu_is_omap1610() || cpu_is_omap5912()) {
201 omap_cfg_reg(W13_1610_USB1_SE0);
202 omap_cfg_reg(R13_1610_USB1_SPEED);
203 // SUSP
204 } else if (cpu_is_omap1710()) {
205 omap_cfg_reg(R13_1710_USB1_SE0);
206 // SUSP
207 } else {
208 pr_debug("usb%d cpu unrecognized\n", 1);
209 return 0;
210 }
211
212 switch (nwires) {
213 case 2:
214 goto bad;
215 case 3:
216 syscon1 = 2;
217 break;
218 case 4:
219 syscon1 = 1;
220 break;
221 case 6:
222 syscon1 = 3;
223 omap_cfg_reg(USB1_VP);
224 omap_cfg_reg(USB1_VM);
225 if (!cpu_is_omap15xx()) {
226 u32 l;
227
228 l = omap_readl(USB_TRANSCEIVER_CTRL);
229 l |= CONF_USB1_UNI_R;
230 omap_writel(l, USB_TRANSCEIVER_CTRL);
231 }
232 break;
233 default:
234bad:
235 printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
236 1, nwires);
237 }
238 return syscon1 << 20;
239}
240
241static u32 __init omap_usb2_init(unsigned nwires, unsigned alt_pingroup)
242{
243 u32 syscon1 = 0;
244
245 /* NOTE omap1 erratum: must leave USB2_UNI_R set if usb0 in use */
246 if (alt_pingroup || nwires == 0)
247 return 0;
248
249 if (!cpu_is_omap15xx() && nwires != 6) {
250 u32 l;
251
252 l = omap_readl(USB_TRANSCEIVER_CTRL);
253 l &= ~CONF_USB2_UNI_R;
254 omap_writel(l, USB_TRANSCEIVER_CTRL);
255 }
256
257 /* external transceiver */
258 if (cpu_is_omap15xx()) {
259 omap_cfg_reg(USB2_TXD);
260 omap_cfg_reg(USB2_TXEN);
261 omap_cfg_reg(USB2_SEO);
262 if (nwires != 3)
263 omap_cfg_reg(USB2_RCV);
264 /* there is no USB2_SPEED */
265 } else if (cpu_is_omap16xx()) {
266 omap_cfg_reg(V6_USB2_TXD);
267 omap_cfg_reg(W9_USB2_TXEN);
268 omap_cfg_reg(W5_USB2_SE0);
269 if (nwires != 3)
270 omap_cfg_reg(Y5_USB2_RCV);
271 // FIXME omap_cfg_reg(USB2_SPEED);
272 } else {
273 pr_debug("usb%d cpu unrecognized\n", 1);
274 return 0;
275 }
276 // omap_cfg_reg(USB2_SUSP);
277
278 switch (nwires) {
279 case 2:
280 goto bad;
281 case 3:
282 syscon1 = 2;
283 break;
284 case 4:
285 syscon1 = 1;
286 break;
287 case 5:
288 goto bad;
289 case 6:
290 syscon1 = 3;
291 if (cpu_is_omap15xx()) {
292 omap_cfg_reg(USB2_VP);
293 omap_cfg_reg(USB2_VM);
294 } else {
295 u32 l;
296
297 omap_cfg_reg(AA9_USB2_VP);
298 omap_cfg_reg(R9_USB2_VM);
299 l = omap_readl(USB_TRANSCEIVER_CTRL);
300 l |= CONF_USB2_UNI_R;
301 omap_writel(l, USB_TRANSCEIVER_CTRL);
302 }
303 break;
304 default:
305bad:
306 printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
307 2, nwires);
308 }
309 return syscon1 << 24;
310}
311
312#else
313#define omap_usb0_init NULL
314#define omap_usb1_init NULL
315#define omap_usb2_init NULL
316#endif
317
318/*-------------------------------------------------------------------------*/
319
320#ifdef CONFIG_USB_GADGET_OMAP
321
322static struct resource udc_resources[] = {
323 /* order is significant! */
324 { /* registers */
325 .start = UDC_BASE,
326 .end = UDC_BASE + 0xff,
327 .flags = IORESOURCE_MEM,
328 }, { /* general IRQ */
329 .start = INT_USB_IRQ_GEN,
330 .flags = IORESOURCE_IRQ,
331 }, { /* PIO IRQ */
332 .start = INT_USB_IRQ_NISO,
333 .flags = IORESOURCE_IRQ,
334 }, { /* SOF IRQ */
335 .start = INT_USB_IRQ_ISO,
336 .flags = IORESOURCE_IRQ,
337 },
338};
339
340static u64 udc_dmamask = ~(u32)0;
341
342static struct platform_device udc_device = {
343 .name = "omap_udc",
344 .id = -1,
345 .dev = {
346 .dma_mask = &udc_dmamask,
347 .coherent_dma_mask = 0xffffffff,
348 },
349 .num_resources = ARRAY_SIZE(udc_resources),
350 .resource = udc_resources,
351};
352
353static inline void udc_device_init(struct omap_usb_config *pdata)
354{
355 pdata->udc_device = &udc_device;
356}
357
358#else
359
360static inline void udc_device_init(struct omap_usb_config *pdata)
361{
362}
363
364#endif
365
366#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
367
368/* The dmamask must be set for OHCI to work */
369static u64 ohci_dmamask = ~(u32)0;
370
371static struct resource ohci_resources[] = {
372 {
373 .start = OMAP_OHCI_BASE,
374 .end = OMAP_OHCI_BASE + 0xff,
375 .flags = IORESOURCE_MEM,
376 },
377 {
378 .start = INT_USB_IRQ_HGEN,
379 .flags = IORESOURCE_IRQ,
380 },
381};
382
383static struct platform_device ohci_device = {
384 .name = "ohci",
385 .id = -1,
386 .dev = {
387 .dma_mask = &ohci_dmamask,
388 .coherent_dma_mask = 0xffffffff,
389 },
390 .num_resources = ARRAY_SIZE(ohci_resources),
391 .resource = ohci_resources,
392};
393
394static inline void ohci_device_init(struct omap_usb_config *pdata)
395{
396 pdata->ohci_device = &ohci_device;
397}
398
399#else
400
401static inline void ohci_device_init(struct omap_usb_config *pdata)
402{
403}
404
405#endif
406
407#if defined(CONFIG_USB_OTG) && defined(CONFIG_ARCH_OMAP_OTG)
408
409static struct resource otg_resources[] = {
410 /* order is significant! */
411 {
412 .start = OTG_BASE,
413 .end = OTG_BASE + 0xff,
414 .flags = IORESOURCE_MEM,
415 }, {
416 .start = INT_USB_IRQ_OTG,
417 .flags = IORESOURCE_IRQ,
418 },
419};
420
421static struct platform_device otg_device = {
422 .name = "omap_otg",
423 .id = -1,
424 .num_resources = ARRAY_SIZE(otg_resources),
425 .resource = otg_resources,
426};
427
428static inline void otg_device_init(struct omap_usb_config *pdata)
429{
430 pdata->otg_device = &otg_device;
431}
432
433#else
434
435static inline void otg_device_init(struct omap_usb_config *pdata)
436{
437}
438
439#endif
440
441/*-------------------------------------------------------------------------*/
442
443// FIXME correct answer depends on hmc_mode,
444// as does (on omap1) any nonzero value for config->otg port number
445#ifdef CONFIG_USB_GADGET_OMAP
446#define is_usb0_device(config) 1
447#else
448#define is_usb0_device(config) 0
449#endif
450
451/*-------------------------------------------------------------------------*/
452
453#ifdef CONFIG_ARCH_OMAP_OTG 32#ifdef CONFIG_ARCH_OMAP_OTG
454 33
455void __init 34void __init
@@ -524,12 +103,6 @@ omap_otg_init(struct omap_usb_config *config)
524 103
525 syscon &= ~DEV_IDLE_EN; 104 syscon &= ~DEV_IDLE_EN;
526 udc_device->dev.platform_data = config; 105 udc_device->dev.platform_data = config;
527 /* IRQ numbers for omap7xx */
528 if(cpu_is_omap7xx()) {
529 udc_resources[1].start = INT_7XX_USB_GENI;
530 udc_resources[2].start = INT_7XX_USB_NON_ISO;
531 udc_resources[3].start = INT_7XX_USB_ISO;
532 }
533 status = platform_device_register(udc_device); 106 status = platform_device_register(udc_device);
534 if (status) 107 if (status)
535 pr_debug("can't register UDC device, %d\n", status); 108 pr_debug("can't register UDC device, %d\n", status);
@@ -542,8 +115,6 @@ omap_otg_init(struct omap_usb_config *config)
542 115
543 syscon &= ~HST_IDLE_EN; 116 syscon &= ~HST_IDLE_EN;
544 ohci_device->dev.platform_data = config; 117 ohci_device->dev.platform_data = config;
545 if (cpu_is_omap7xx())
546 ohci_resources[1].start = INT_7XX_USB_HHC_1;
547 status = platform_device_register(ohci_device); 118 status = platform_device_register(ohci_device);
548 if (status) 119 if (status)
549 pr_debug("can't register OHCI device, %d\n", status); 120 pr_debug("can't register OHCI device, %d\n", status);
@@ -556,8 +127,6 @@ omap_otg_init(struct omap_usb_config *config)
556 127
557 syscon &= ~OTG_IDLE_EN; 128 syscon &= ~OTG_IDLE_EN;
558 otg_device->dev.platform_data = config; 129 otg_device->dev.platform_data = config;
559 if (cpu_is_omap7xx())
560 otg_resources[1].start = INT_7XX_USB_OTG;
561 status = platform_device_register(otg_device); 130 status = platform_device_register(otg_device);
562 if (status) 131 if (status)
563 pr_debug("can't register OTG device, %d\n", status); 132 pr_debug("can't register OTG device, %d\n", status);
@@ -572,107 +141,3 @@ omap_otg_init(struct omap_usb_config *config)
572#else 141#else
573void omap_otg_init(struct omap_usb_config *config) {} 142void omap_otg_init(struct omap_usb_config *config) {}
574#endif 143#endif
575
576/*-------------------------------------------------------------------------*/
577
578#ifdef CONFIG_ARCH_OMAP15XX
579
580/* ULPD_DPLL_CTRL */
581#define DPLL_IOB (1 << 13)
582#define DPLL_PLL_ENABLE (1 << 4)
583#define DPLL_LOCK (1 << 0)
584
585/* ULPD_APLL_CTRL */
586#define APLL_NDPLL_SWITCH (1 << 0)
587
588
589static void __init omap_1510_usb_init(struct omap_usb_config *config)
590{
591 unsigned int val;
592 u16 w;
593
594 config->usb0_init(config->pins[0], is_usb0_device(config));
595 config->usb1_init(config->pins[1]);
596 config->usb2_init(config->pins[2], 0);
597
598 val = omap_readl(MOD_CONF_CTRL_0) & ~(0x3f << 1);
599 val |= (config->hmc_mode << 1);
600 omap_writel(val, MOD_CONF_CTRL_0);
601
602 printk("USB: hmc %d", config->hmc_mode);
603 if (config->pins[0])
604 printk(", usb0 %d wires%s", config->pins[0],
605 is_usb0_device(config) ? " (dev)" : "");
606 if (config->pins[1])
607 printk(", usb1 %d wires", config->pins[1]);
608 if (config->pins[2])
609 printk(", usb2 %d wires", config->pins[2]);
610 printk("\n");
611
612 /* use DPLL for 48 MHz function clock */
613 pr_debug("APLL %04x DPLL %04x REQ %04x\n", omap_readw(ULPD_APLL_CTRL),
614 omap_readw(ULPD_DPLL_CTRL), omap_readw(ULPD_SOFT_REQ));
615
616 w = omap_readw(ULPD_APLL_CTRL);
617 w &= ~APLL_NDPLL_SWITCH;
618 omap_writew(w, ULPD_APLL_CTRL);
619
620 w = omap_readw(ULPD_DPLL_CTRL);
621 w |= DPLL_IOB | DPLL_PLL_ENABLE;
622 omap_writew(w, ULPD_DPLL_CTRL);
623
624 w = omap_readw(ULPD_SOFT_REQ);
625 w |= SOFT_UDC_REQ | SOFT_DPLL_REQ;
626 omap_writew(w, ULPD_SOFT_REQ);
627
628 while (!(omap_readw(ULPD_DPLL_CTRL) & DPLL_LOCK))
629 cpu_relax();
630
631#ifdef CONFIG_USB_GADGET_OMAP
632 if (config->register_dev) {
633 int status;
634
635 udc_device.dev.platform_data = config;
636 status = platform_device_register(&udc_device);
637 if (status)
638 pr_debug("can't register UDC device, %d\n", status);
639 /* udc driver gates 48MHz by D+ pullup */
640 }
641#endif
642
643#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
644 if (config->register_host) {
645 int status;
646
647 ohci_device.dev.platform_data = config;
648 status = platform_device_register(&ohci_device);
649 if (status)
650 pr_debug("can't register OHCI device, %d\n", status);
651 /* hcd explicitly gates 48MHz */
652 }
653#endif
654}
655
656#else
657static inline void omap_1510_usb_init(struct omap_usb_config *config) {}
658#endif
659
660/*-------------------------------------------------------------------------*/
661
662void __init omap_usb_init(struct omap_usb_config *pdata)
663{
664 pdata->usb0_init = omap_usb0_init;
665 pdata->usb1_init = omap_usb1_init;
666 pdata->usb2_init = omap_usb2_init;
667 udc_device_init(pdata);
668 ohci_device_init(pdata);
669 otg_device_init(pdata);
670
671 if (cpu_is_omap7xx() || cpu_is_omap16xx())
672 omap_otg_init(pdata);
673 else if (cpu_is_omap15xx())
674 omap_1510_usb_init(pdata);
675 else
676 printk(KERN_ERR "USB: No init for your chip yet\n");
677}
678
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-05 18:26:35 -0500