2 * Platform level USB initialization for FS USB OTG controller on omap1 and 24xx
4 * Copyright (C) 2004 Texas Instruments, Inc.
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.
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.
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
21 #include <linux/module.h>
22 #include <linux/kernel.h>
23 #include <linux/init.h>
24 #include <linux/platform_device.h>
32 /* These routines should handle the standard chip-specific modes
33 * for usb0/1/2 ports, covering basic mux and transceiver setup.
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.
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
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
56 #ifdef CONFIG_USB_GADGET_OMAP
58 static struct resource udc_resources[] = {
59 /* order is significant! */
62 .end = UDC_BASE + 0xff,
63 .flags = IORESOURCE_MEM,
64 }, { /* general IRQ */
65 .start = INT_USB_IRQ_GEN,
66 .flags = IORESOURCE_IRQ,
68 .start = INT_USB_IRQ_NISO,
69 .flags = IORESOURCE_IRQ,
71 .start = INT_USB_IRQ_ISO,
72 .flags = IORESOURCE_IRQ,
76 static u64 udc_dmamask = ~(u32)0;
78 static struct platform_device udc_device = {
82 .dma_mask = &udc_dmamask,
83 .coherent_dma_mask = 0xffffffff,
85 .num_resources = ARRAY_SIZE(udc_resources),
86 .resource = udc_resources,
89 static inline void udc_device_init(struct omap_usb_config *pdata)
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;
97 pdata->udc_device = &udc_device;
102 static inline void udc_device_init(struct omap_usb_config *pdata)
108 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
110 /* The dmamask must be set for OHCI to work */
111 static u64 ohci_dmamask = ~(u32)0;
113 static struct resource ohci_resources[] = {
115 .start = OMAP_OHCI_BASE,
116 .end = OMAP_OHCI_BASE + 0xff,
117 .flags = IORESOURCE_MEM,
120 .start = INT_USB_IRQ_HGEN,
121 .flags = IORESOURCE_IRQ,
125 static struct platform_device ohci_device = {
129 .dma_mask = &ohci_dmamask,
130 .coherent_dma_mask = 0xffffffff,
132 .num_resources = ARRAY_SIZE(ohci_resources),
133 .resource = ohci_resources,
136 static inline void ohci_device_init(struct omap_usb_config *pdata)
138 if (cpu_is_omap7xx())
139 ohci_resources[1].start = INT_7XX_USB_HHC_1;
140 pdata->ohci_device = &ohci_device;
145 static inline void ohci_device_init(struct omap_usb_config *pdata)
151 #if defined(CONFIG_USB_OTG) && defined(CONFIG_ARCH_OMAP_OTG)
153 static struct resource otg_resources[] = {
154 /* order is significant! */
157 .end = OTG_BASE + 0xff,
158 .flags = IORESOURCE_MEM,
160 .start = INT_USB_IRQ_OTG,
161 .flags = IORESOURCE_IRQ,
165 static struct platform_device otg_device = {
168 .num_resources = ARRAY_SIZE(otg_resources),
169 .resource = otg_resources,
172 static inline void otg_device_init(struct omap_usb_config *pdata)
174 if (cpu_is_omap7xx())
175 otg_resources[1].start = INT_7XX_USB_OTG;
176 pdata->otg_device = &otg_device;
181 static inline void otg_device_init(struct omap_usb_config *pdata)
187 u32 __init omap1_usb0_init(unsigned nwires, unsigned is_device)
192 if (!cpu_is_omap15xx()) {
196 l = omap_readl(USB_TRANSCEIVER_CTRL);
198 omap_writel(l, USB_TRANSCEIVER_CTRL);
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);
211 omap_cfg_reg(W4_USB_PUEN);
217 // omap_cfg_reg(P9_USB_DP);
218 // omap_cfg_reg(R8_USB_DM);
220 if (cpu_is_omap15xx()) {
221 /* This works on 1510-Innovator */
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
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);
237 omap_writel(l, USB_TRANSCEIVER_CTRL);
243 /* alternate pin config, external transceiver */
244 if (cpu_is_omap15xx()) {
245 printk(KERN_ERR "no usb0 alt pin config on 15xx\n");
249 omap_cfg_reg(V6_USB0_TXD);
250 omap_cfg_reg(W9_USB0_TXEN);
251 omap_cfg_reg(W5_USB0_SE0);
253 omap_cfg_reg(Y5_USB0_RCV);
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.
263 l = omap_readl(USB_TRANSCEIVER_CTRL);
264 l &= ~CONF_USB2_UNI_R;
265 omap_writel(l, USB_TRANSCEIVER_CTRL);
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);
288 printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
292 return syscon1 << 16;
295 u32 __init omap1_usb1_init(unsigned nwires)
299 if (!cpu_is_omap15xx() && nwires != 6) {
302 l = omap_readl(USB_TRANSCEIVER_CTRL);
303 l &= ~CONF_USB1_UNI_R;
304 omap_writel(l, USB_TRANSCEIVER_CTRL);
309 /* external transceiver */
310 omap_cfg_reg(USB1_TXD);
311 omap_cfg_reg(USB1_TXEN);
313 omap_cfg_reg(USB1_RCV);
315 if (cpu_is_omap15xx()) {
316 omap_cfg_reg(USB1_SEO);
317 omap_cfg_reg(USB1_SPEED);
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);
323 } else if (cpu_is_omap1710()) {
324 omap_cfg_reg(R13_1710_USB1_SE0);
327 pr_debug("usb%d cpu unrecognized\n", 1);
342 omap_cfg_reg(USB1_VP);
343 omap_cfg_reg(USB1_VM);
344 if (!cpu_is_omap15xx()) {
347 l = omap_readl(USB_TRANSCEIVER_CTRL);
348 l |= CONF_USB1_UNI_R;
349 omap_writel(l, USB_TRANSCEIVER_CTRL);
354 printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
358 return syscon1 << 20;
361 u32 __init omap1_usb2_init(unsigned nwires, unsigned alt_pingroup)
365 /* NOTE omap1 erratum: must leave USB2_UNI_R set if usb0 in use */
366 if (alt_pingroup || nwires == 0)
369 if (!cpu_is_omap15xx() && nwires != 6) {
372 l = omap_readl(USB_TRANSCEIVER_CTRL);
373 l &= ~CONF_USB2_UNI_R;
374 omap_writel(l, USB_TRANSCEIVER_CTRL);
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);
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);
390 omap_cfg_reg(Y5_USB2_RCV);
391 // FIXME omap_cfg_reg(USB2_SPEED);
393 pr_debug("usb%d cpu unrecognized\n", 1);
397 // omap_cfg_reg(USB2_SUSP);
412 if (cpu_is_omap15xx()) {
413 omap_cfg_reg(USB2_VP);
414 omap_cfg_reg(USB2_VM);
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);
427 printk(KERN_ERR "illegal usb%d %d-wire transceiver\n",
431 return syscon1 << 24;
434 #ifdef CONFIG_ARCH_OMAP15XX
437 #define DPLL_IOB (1 << 13)
438 #define DPLL_PLL_ENABLE (1 << 4)
439 #define DPLL_LOCK (1 << 0)
442 #define APLL_NDPLL_SWITCH (1 << 0)
444 static void __init omap_1510_usb_init(struct omap_usb_config *config)
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);
453 val = omap_readl(MOD_CONF_CTRL_0) & ~(0x3f << 1);
454 val |= (config->hmc_mode << 1);
455 omap_writel(val, MOD_CONF_CTRL_0);
457 printk("USB: hmc %d", config->hmc_mode);
459 printk(", usb0 %d wires%s", config->pins[0],
460 is_usb0_device(config) ? " (dev)" : "");
462 printk(", usb1 %d wires", config->pins[1]);
464 printk(", usb2 %d wires", config->pins[2]);
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));
471 w = omap_readw(ULPD_APLL_CTRL);
472 w &= ~APLL_NDPLL_SWITCH;
473 omap_writew(w, ULPD_APLL_CTRL);
475 w = omap_readw(ULPD_DPLL_CTRL);
476 w |= DPLL_IOB | DPLL_PLL_ENABLE;
477 omap_writew(w, ULPD_DPLL_CTRL);
479 w = omap_readw(ULPD_SOFT_REQ);
480 w |= SOFT_UDC_REQ | SOFT_DPLL_REQ;
481 omap_writew(w, ULPD_SOFT_REQ);
483 while (!(omap_readw(ULPD_DPLL_CTRL) & DPLL_LOCK))
486 #ifdef CONFIG_USB_GADGET_OMAP
487 if (config->register_dev) {
490 udc_device.dev.platform_data = config;
491 status = platform_device_register(&udc_device);
493 pr_debug("can't register UDC device, %d\n", status);
494 /* udc driver gates 48MHz by D+ pullup */
498 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
499 if (config->register_host) {
502 ohci_device.dev.platform_data = config;
503 status = platform_device_register(&ohci_device);
505 pr_debug("can't register OHCI device, %d\n", status);
506 /* hcd explicitly gates 48MHz */
512 static inline void omap_1510_usb_init(struct omap_usb_config *config) {}
515 void __init omap1_usb_init(struct omap_usb_config *pdata)
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);
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);
529 printk(KERN_ERR "USB: No init for your chip yet\n");