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Linux 3.0-rc7
[linux-2.6/kvm.git] / drivers / mfd / omap-usb-host.c
blob1717144fe7f4f220f6cd79ccea856f39f87ecac3
1 /**
2 * omap-usb-host.c - The USBHS core driver for OMAP EHCI & OHCI
3 *
4 * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com
5 * Author: Keshava Munegowda <keshava_mgowda@ti.com>
6 *
7 * This program is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 of
9 * the License as published by the Free Software Foundation.
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, see <http://www.gnu.org/licenses/>.
18 */
19 #include <linux/kernel.h>
20 #include <linux/types.h>
21 #include <linux/slab.h>
22 #include <linux/delay.h>
23 #include <linux/platform_device.h>
24 #include <linux/clk.h>
25 #include <linux/dma-mapping.h>
26 #include <linux/spinlock.h>
27 #include <linux/gpio.h>
28 #include <plat/usb.h>
29
30 #define USBHS_DRIVER_NAME "usbhs-omap"
31 #define OMAP_EHCI_DEVICE "ehci-omap"
32 #define OMAP_OHCI_DEVICE "ohci-omap3"
33
34 /* OMAP USBHOST Register addresses */
35
36 /* TLL Register Set */
37 #define OMAP_USBTLL_REVISION (0x00)
38 #define OMAP_USBTLL_SYSCONFIG (0x10)
39 #define OMAP_USBTLL_SYSCONFIG_CACTIVITY (1 << 8)
40 #define OMAP_USBTLL_SYSCONFIG_SIDLEMODE (1 << 3)
41 #define OMAP_USBTLL_SYSCONFIG_ENAWAKEUP (1 << 2)
42 #define OMAP_USBTLL_SYSCONFIG_SOFTRESET (1 << 1)
43 #define OMAP_USBTLL_SYSCONFIG_AUTOIDLE (1 << 0)
44
45 #define OMAP_USBTLL_SYSSTATUS (0x14)
46 #define OMAP_USBTLL_SYSSTATUS_RESETDONE (1 << 0)
47
48 #define OMAP_USBTLL_IRQSTATUS (0x18)
49 #define OMAP_USBTLL_IRQENABLE (0x1C)
50
51 #define OMAP_TLL_SHARED_CONF (0x30)
52 #define OMAP_TLL_SHARED_CONF_USB_90D_DDR_EN (1 << 6)
53 #define OMAP_TLL_SHARED_CONF_USB_180D_SDR_EN (1 << 5)
54 #define OMAP_TLL_SHARED_CONF_USB_DIVRATION (1 << 2)
55 #define OMAP_TLL_SHARED_CONF_FCLK_REQ (1 << 1)
56 #define OMAP_TLL_SHARED_CONF_FCLK_IS_ON (1 << 0)
57
58 #define OMAP_TLL_CHANNEL_CONF(num) (0x040 + 0x004 * num)
59 #define OMAP_TLL_CHANNEL_CONF_FSLSMODE_SHIFT 24
60 #define OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF (1 << 11)
61 #define OMAP_TLL_CHANNEL_CONF_ULPI_ULPIAUTOIDLE (1 << 10)
62 #define OMAP_TLL_CHANNEL_CONF_UTMIAUTOIDLE (1 << 9)
63 #define OMAP_TLL_CHANNEL_CONF_ULPIDDRMODE (1 << 8)
64 #define OMAP_TLL_CHANNEL_CONF_CHANMODE_FSLS (1 << 1)
65 #define OMAP_TLL_CHANNEL_CONF_CHANEN (1 << 0)
66
67 #define OMAP_TLL_FSLSMODE_6PIN_PHY_DAT_SE0 0x0
68 #define OMAP_TLL_FSLSMODE_6PIN_PHY_DP_DM 0x1
69 #define OMAP_TLL_FSLSMODE_3PIN_PHY 0x2
70 #define OMAP_TLL_FSLSMODE_4PIN_PHY 0x3
71 #define OMAP_TLL_FSLSMODE_6PIN_TLL_DAT_SE0 0x4
72 #define OMAP_TLL_FSLSMODE_6PIN_TLL_DP_DM 0x5
73 #define OMAP_TLL_FSLSMODE_3PIN_TLL 0x6
74 #define OMAP_TLL_FSLSMODE_4PIN_TLL 0x7
75 #define OMAP_TLL_FSLSMODE_2PIN_TLL_DAT_SE0 0xA
76 #define OMAP_TLL_FSLSMODE_2PIN_DAT_DP_DM 0xB
77
78 #define OMAP_TLL_ULPI_FUNCTION_CTRL(num) (0x804 + 0x100 * num)
79 #define OMAP_TLL_ULPI_INTERFACE_CTRL(num) (0x807 + 0x100 * num)
80 #define OMAP_TLL_ULPI_OTG_CTRL(num) (0x80A + 0x100 * num)
81 #define OMAP_TLL_ULPI_INT_EN_RISE(num) (0x80D + 0x100 * num)
82 #define OMAP_TLL_ULPI_INT_EN_FALL(num) (0x810 + 0x100 * num)
83 #define OMAP_TLL_ULPI_INT_STATUS(num) (0x813 + 0x100 * num)
84 #define OMAP_TLL_ULPI_INT_LATCH(num) (0x814 + 0x100 * num)
85 #define OMAP_TLL_ULPI_DEBUG(num) (0x815 + 0x100 * num)
86 #define OMAP_TLL_ULPI_SCRATCH_REGISTER(num) (0x816 + 0x100 * num)
87
88 #define OMAP_TLL_CHANNEL_COUNT 3
89 #define OMAP_TLL_CHANNEL_1_EN_MASK (1 << 0)
90 #define OMAP_TLL_CHANNEL_2_EN_MASK (1 << 1)
91 #define OMAP_TLL_CHANNEL_3_EN_MASK (1 << 2)
92
93 /* UHH Register Set */
94 #define OMAP_UHH_REVISION (0x00)
95 #define OMAP_UHH_SYSCONFIG (0x10)
96 #define OMAP_UHH_SYSCONFIG_MIDLEMODE (1 << 12)
97 #define OMAP_UHH_SYSCONFIG_CACTIVITY (1 << 8)
98 #define OMAP_UHH_SYSCONFIG_SIDLEMODE (1 << 3)
99 #define OMAP_UHH_SYSCONFIG_ENAWAKEUP (1 << 2)
100 #define OMAP_UHH_SYSCONFIG_SOFTRESET (1 << 1)
101 #define OMAP_UHH_SYSCONFIG_AUTOIDLE (1 << 0)
102
103 #define OMAP_UHH_SYSSTATUS (0x14)
104 #define OMAP_UHH_HOSTCONFIG (0x40)
105 #define OMAP_UHH_HOSTCONFIG_ULPI_BYPASS (1 << 0)
106 #define OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS (1 << 0)
107 #define OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS (1 << 11)
108 #define OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS (1 << 12)
109 #define OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN (1 << 2)
110 #define OMAP_UHH_HOSTCONFIG_INCR8_BURST_EN (1 << 3)
111 #define OMAP_UHH_HOSTCONFIG_INCR16_BURST_EN (1 << 4)
112 #define OMAP_UHH_HOSTCONFIG_INCRX_ALIGN_EN (1 << 5)
113 #define OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS (1 << 8)
114 #define OMAP_UHH_HOSTCONFIG_P2_CONNECT_STATUS (1 << 9)
115 #define OMAP_UHH_HOSTCONFIG_P3_CONNECT_STATUS (1 << 10)
116 #define OMAP4_UHH_HOSTCONFIG_APP_START_CLK (1 << 31)
117
118 /* OMAP4-specific defines */
119 #define OMAP4_UHH_SYSCONFIG_IDLEMODE_CLEAR (3 << 2)
120 #define OMAP4_UHH_SYSCONFIG_NOIDLE (1 << 2)
121 #define OMAP4_UHH_SYSCONFIG_STDBYMODE_CLEAR (3 << 4)
122 #define OMAP4_UHH_SYSCONFIG_NOSTDBY (1 << 4)
123 #define OMAP4_UHH_SYSCONFIG_SOFTRESET (1 << 0)
124
125 #define OMAP4_P1_MODE_CLEAR (3 << 16)
126 #define OMAP4_P1_MODE_TLL (1 << 16)
127 #define OMAP4_P1_MODE_HSIC (3 << 16)
128 #define OMAP4_P2_MODE_CLEAR (3 << 18)
129 #define OMAP4_P2_MODE_TLL (1 << 18)
130 #define OMAP4_P2_MODE_HSIC (3 << 18)
131
132 #define OMAP_REV2_TLL_CHANNEL_COUNT 2
133
134 #define OMAP_UHH_DEBUG_CSR (0x44)
135
136 /* Values of UHH_REVISION - Note: these are not given in the TRM */
137 #define OMAP_USBHS_REV1 0x00000010 /* OMAP3 */
138 #define OMAP_USBHS_REV2 0x50700100 /* OMAP4 */
139
140 #define is_omap_usbhs_rev1(x) (x->usbhs_rev == OMAP_USBHS_REV1)
141 #define is_omap_usbhs_rev2(x) (x->usbhs_rev == OMAP_USBHS_REV2)
142
143 #define is_ehci_phy_mode(x) (x == OMAP_EHCI_PORT_MODE_PHY)
144 #define is_ehci_tll_mode(x) (x == OMAP_EHCI_PORT_MODE_TLL)
145 #define is_ehci_hsic_mode(x) (x == OMAP_EHCI_PORT_MODE_HSIC)
146
147
148 struct usbhs_hcd_omap {
149 struct clk *usbhost_ick;
150 struct clk *usbhost_hs_fck;
151 struct clk *usbhost_fs_fck;
152 struct clk *xclk60mhsp1_ck;
153 struct clk *xclk60mhsp2_ck;
154 struct clk *utmi_p1_fck;
155 struct clk *usbhost_p1_fck;
156 struct clk *usbtll_p1_fck;
157 struct clk *utmi_p2_fck;
158 struct clk *usbhost_p2_fck;
159 struct clk *usbtll_p2_fck;
160 struct clk *init_60m_fclk;
161 struct clk *usbtll_fck;
162 struct clk *usbtll_ick;
163
164 void __iomem *uhh_base;
165 void __iomem *tll_base;
166
167 struct usbhs_omap_platform_data platdata;
168
169 u32 usbhs_rev;
170 spinlock_t lock;
171 int count;
172 };
173 /*-------------------------------------------------------------------------*/
174
175 const char usbhs_driver_name[] = USBHS_DRIVER_NAME;
176 static u64 usbhs_dmamask = ~(u32)0;
177
178 /*-------------------------------------------------------------------------*/
179
180 static inline void usbhs_write(void __iomem *base, u32 reg, u32 val)
181 {
182 __raw_writel(val, base + reg);
183 }
184
185 static inline u32 usbhs_read(void __iomem *base, u32 reg)
186 {
187 return __raw_readl(base + reg);
188 }
189
190 static inline void usbhs_writeb(void __iomem *base, u8 reg, u8 val)
191 {
192 __raw_writeb(val, base + reg);
193 }
194
195 static inline u8 usbhs_readb(void __iomem *base, u8 reg)
196 {
197 return __raw_readb(base + reg);
198 }
199
200 /*-------------------------------------------------------------------------*/
201
202 static struct platform_device *omap_usbhs_alloc_child(const char *name,
203 struct resource *res, int num_resources, void *pdata,
204 size_t pdata_size, struct device *dev)
205 {
206 struct platform_device *child;
207 int ret;
208
209 child = platform_device_alloc(name, 0);
210
211 if (!child) {
212 dev_err(dev, "platform_device_alloc %s failed\n", name);
213 goto err_end;
214 }
215
216 ret = platform_device_add_resources(child, res, num_resources);
217 if (ret) {
218 dev_err(dev, "platform_device_add_resources failed\n");
219 goto err_alloc;
220 }
221
222 ret = platform_device_add_data(child, pdata, pdata_size);
223 if (ret) {
224 dev_err(dev, "platform_device_add_data failed\n");
225 goto err_alloc;
226 }
227
228 child->dev.dma_mask = &usbhs_dmamask;
229 child->dev.coherent_dma_mask = 0xffffffff;
230 child->dev.parent = dev;
231
232 ret = platform_device_add(child);
233 if (ret) {
234 dev_err(dev, "platform_device_add failed\n");
235 goto err_alloc;
236 }
237
238 return child;
239
240 err_alloc:
241 platform_device_put(child);
242
243 err_end:
244 return NULL;
245 }
246
247 static int omap_usbhs_alloc_children(struct platform_device *pdev)
248 {
249 struct device *dev = &pdev->dev;
250 struct usbhs_hcd_omap *omap;
251 struct ehci_hcd_omap_platform_data *ehci_data;
252 struct ohci_hcd_omap_platform_data *ohci_data;
253 struct platform_device *ehci;
254 struct platform_device *ohci;
255 struct resource *res;
256 struct resource resources[2];
257 int ret;
258
259 omap = platform_get_drvdata(pdev);
260 ehci_data = omap->platdata.ehci_data;
261 ohci_data = omap->platdata.ohci_data;
262
263 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ehci");
264 if (!res) {
265 dev_err(dev, "EHCI get resource IORESOURCE_MEM failed\n");
266 ret = -ENODEV;
267 goto err_end;
268 }
269 resources[0] = *res;
270
271 res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "ehci-irq");
272 if (!res) {
273 dev_err(dev, " EHCI get resource IORESOURCE_IRQ failed\n");
274 ret = -ENODEV;
275 goto err_end;
276 }
277 resources[1] = *res;
278
279 ehci = omap_usbhs_alloc_child(OMAP_EHCI_DEVICE, resources, 2, ehci_data,
280 sizeof(*ehci_data), dev);
281
282 if (!ehci) {
283 dev_err(dev, "omap_usbhs_alloc_child failed\n");
284 ret = -ENOMEM;
285 goto err_end;
286 }
287
288 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ohci");
289 if (!res) {
290 dev_err(dev, "OHCI get resource IORESOURCE_MEM failed\n");
291 ret = -ENODEV;
292 goto err_ehci;
293 }
294 resources[0] = *res;
295
296 res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "ohci-irq");
297 if (!res) {
298 dev_err(dev, "OHCI get resource IORESOURCE_IRQ failed\n");
299 ret = -ENODEV;
300 goto err_ehci;
301 }
302 resources[1] = *res;
303
304 ohci = omap_usbhs_alloc_child(OMAP_OHCI_DEVICE, resources, 2, ohci_data,
305 sizeof(*ohci_data), dev);
306 if (!ohci) {
307 dev_err(dev, "omap_usbhs_alloc_child failed\n");
308 ret = -ENOMEM;
309 goto err_ehci;
310 }
311
312 return 0;
313
314 err_ehci:
315 platform_device_unregister(ehci);
316
317 err_end:
318 return ret;
319 }
320
321 /**
322 * usbhs_omap_probe - initialize TI-based HCDs
323 *
324 * Allocates basic resources for this USB host controller.
325 */
326 static int __devinit usbhs_omap_probe(struct platform_device *pdev)
327 {
328 struct device *dev = &pdev->dev;
329 struct usbhs_omap_platform_data *pdata = dev->platform_data;
330 struct usbhs_hcd_omap *omap;
331 struct resource *res;
332 int ret = 0;
333 int i;
334
335 if (!pdata) {
336 dev_err(dev, "Missing platform data\n");
337 ret = -ENOMEM;
338 goto end_probe;
339 }
340
341 omap = kzalloc(sizeof(*omap), GFP_KERNEL);
342 if (!omap) {
343 dev_err(dev, "Memory allocation failed\n");
344 ret = -ENOMEM;
345 goto end_probe;
346 }
347
348 spin_lock_init(&omap->lock);
349
350 for (i = 0; i < OMAP3_HS_USB_PORTS; i++)
351 omap->platdata.port_mode[i] = pdata->port_mode[i];
352
353 omap->platdata.ehci_data = pdata->ehci_data;
354 omap->platdata.ohci_data = pdata->ohci_data;
355
356 omap->usbhost_ick = clk_get(dev, "usbhost_ick");
357 if (IS_ERR(omap->usbhost_ick)) {
358 ret = PTR_ERR(omap->usbhost_ick);
359 dev_err(dev, "usbhost_ick failed error:%d\n", ret);
360 goto err_end;
361 }
362
363 omap->usbhost_hs_fck = clk_get(dev, "hs_fck");
364 if (IS_ERR(omap->usbhost_hs_fck)) {
365 ret = PTR_ERR(omap->usbhost_hs_fck);
366 dev_err(dev, "usbhost_hs_fck failed error:%d\n", ret);
367 goto err_usbhost_ick;
368 }
369
370 omap->usbhost_fs_fck = clk_get(dev, "fs_fck");
371 if (IS_ERR(omap->usbhost_fs_fck)) {
372 ret = PTR_ERR(omap->usbhost_fs_fck);
373 dev_err(dev, "usbhost_fs_fck failed error:%d\n", ret);
374 goto err_usbhost_hs_fck;
375 }
376
377 omap->usbtll_fck = clk_get(dev, "usbtll_fck");
378 if (IS_ERR(omap->usbtll_fck)) {
379 ret = PTR_ERR(omap->usbtll_fck);
380 dev_err(dev, "usbtll_fck failed error:%d\n", ret);
381 goto err_usbhost_fs_fck;
382 }
383
384 omap->usbtll_ick = clk_get(dev, "usbtll_ick");
385 if (IS_ERR(omap->usbtll_ick)) {
386 ret = PTR_ERR(omap->usbtll_ick);
387 dev_err(dev, "usbtll_ick failed error:%d\n", ret);
388 goto err_usbtll_fck;
389 }
390
391 omap->utmi_p1_fck = clk_get(dev, "utmi_p1_gfclk");
392 if (IS_ERR(omap->utmi_p1_fck)) {
393 ret = PTR_ERR(omap->utmi_p1_fck);
394 dev_err(dev, "utmi_p1_gfclk failed error:%d\n", ret);
395 goto err_usbtll_ick;
396 }
397
398 omap->xclk60mhsp1_ck = clk_get(dev, "xclk60mhsp1_ck");
399 if (IS_ERR(omap->xclk60mhsp1_ck)) {
400 ret = PTR_ERR(omap->xclk60mhsp1_ck);
401 dev_err(dev, "xclk60mhsp1_ck failed error:%d\n", ret);
402 goto err_utmi_p1_fck;
403 }
404
405 omap->utmi_p2_fck = clk_get(dev, "utmi_p2_gfclk");
406 if (IS_ERR(omap->utmi_p2_fck)) {
407 ret = PTR_ERR(omap->utmi_p2_fck);
408 dev_err(dev, "utmi_p2_gfclk failed error:%d\n", ret);
409 goto err_xclk60mhsp1_ck;
410 }
411
412 omap->xclk60mhsp2_ck = clk_get(dev, "xclk60mhsp2_ck");
413 if (IS_ERR(omap->xclk60mhsp2_ck)) {
414 ret = PTR_ERR(omap->xclk60mhsp2_ck);
415 dev_err(dev, "xclk60mhsp2_ck failed error:%d\n", ret);
416 goto err_utmi_p2_fck;
417 }
418
419 omap->usbhost_p1_fck = clk_get(dev, "usb_host_hs_utmi_p1_clk");
420 if (IS_ERR(omap->usbhost_p1_fck)) {
421 ret = PTR_ERR(omap->usbhost_p1_fck);
422 dev_err(dev, "usbhost_p1_fck failed error:%d\n", ret);
423 goto err_xclk60mhsp2_ck;
424 }
425
426 omap->usbtll_p1_fck = clk_get(dev, "usb_tll_hs_usb_ch0_clk");
427 if (IS_ERR(omap->usbtll_p1_fck)) {
428 ret = PTR_ERR(omap->usbtll_p1_fck);
429 dev_err(dev, "usbtll_p1_fck failed error:%d\n", ret);
430 goto err_usbhost_p1_fck;
431 }
432
433 omap->usbhost_p2_fck = clk_get(dev, "usb_host_hs_utmi_p2_clk");
434 if (IS_ERR(omap->usbhost_p2_fck)) {
435 ret = PTR_ERR(omap->usbhost_p2_fck);
436 dev_err(dev, "usbhost_p2_fck failed error:%d\n", ret);
437 goto err_usbtll_p1_fck;
438 }
439
440 omap->usbtll_p2_fck = clk_get(dev, "usb_tll_hs_usb_ch1_clk");
441 if (IS_ERR(omap->usbtll_p2_fck)) {
442 ret = PTR_ERR(omap->usbtll_p2_fck);
443 dev_err(dev, "usbtll_p2_fck failed error:%d\n", ret);
444 goto err_usbhost_p2_fck;
445 }
446
447 omap->init_60m_fclk = clk_get(dev, "init_60m_fclk");
448 if (IS_ERR(omap->init_60m_fclk)) {
449 ret = PTR_ERR(omap->init_60m_fclk);
450 dev_err(dev, "init_60m_fclk failed error:%d\n", ret);
451 goto err_usbtll_p2_fck;
452 }
453
454 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "uhh");
455 if (!res) {
456 dev_err(dev, "UHH EHCI get resource failed\n");
457 ret = -ENODEV;
458 goto err_init_60m_fclk;
459 }
460
461 omap->uhh_base = ioremap(res->start, resource_size(res));
462 if (!omap->uhh_base) {
463 dev_err(dev, "UHH ioremap failed\n");
464 ret = -ENOMEM;
465 goto err_init_60m_fclk;
466 }
467
468 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tll");
469 if (!res) {
470 dev_err(dev, "UHH EHCI get resource failed\n");
471 ret = -ENODEV;
472 goto err_tll;
473 }
474
475 omap->tll_base = ioremap(res->start, resource_size(res));
476 if (!omap->tll_base) {
477 dev_err(dev, "TLL ioremap failed\n");
478 ret = -ENOMEM;
479 goto err_tll;
480 }
481
482 platform_set_drvdata(pdev, omap);
483
484 ret = omap_usbhs_alloc_children(pdev);
485 if (ret) {
486 dev_err(dev, "omap_usbhs_alloc_children failed\n");
487 goto err_alloc;
488 }
489
490 goto end_probe;
491
492 err_alloc:
493 iounmap(omap->tll_base);
494
495 err_tll:
496 iounmap(omap->uhh_base);
497
498 err_init_60m_fclk:
499 clk_put(omap->init_60m_fclk);
500
501 err_usbtll_p2_fck:
502 clk_put(omap->usbtll_p2_fck);
503
504 err_usbhost_p2_fck:
505 clk_put(omap->usbhost_p2_fck);
506
507 err_usbtll_p1_fck:
508 clk_put(omap->usbtll_p1_fck);
509
510 err_usbhost_p1_fck:
511 clk_put(omap->usbhost_p1_fck);
512
513 err_xclk60mhsp2_ck:
514 clk_put(omap->xclk60mhsp2_ck);
515
516 err_utmi_p2_fck:
517 clk_put(omap->utmi_p2_fck);
518
519 err_xclk60mhsp1_ck:
520 clk_put(omap->xclk60mhsp1_ck);
521
522 err_utmi_p1_fck:
523 clk_put(omap->utmi_p1_fck);
524
525 err_usbtll_ick:
526 clk_put(omap->usbtll_ick);
527
528 err_usbtll_fck:
529 clk_put(omap->usbtll_fck);
530
531 err_usbhost_fs_fck:
532 clk_put(omap->usbhost_fs_fck);
533
534 err_usbhost_hs_fck:
535 clk_put(omap->usbhost_hs_fck);
536
537 err_usbhost_ick:
538 clk_put(omap->usbhost_ick);
539
540 err_end:
541 kfree(omap);
542
543 end_probe:
544 return ret;
545 }
546
547 /**
548 * usbhs_omap_remove - shutdown processing for UHH & TLL HCDs
549 * @pdev: USB Host Controller being removed
550 *
551 * Reverses the effect of usbhs_omap_probe().
552 */
553 static int __devexit usbhs_omap_remove(struct platform_device *pdev)
554 {
555 struct usbhs_hcd_omap *omap = platform_get_drvdata(pdev);
556
557 if (omap->count != 0) {
558 dev_err(&pdev->dev,
559 "Either EHCI or OHCI is still using usbhs core\n");
560 return -EBUSY;
561 }
562
563 iounmap(omap->tll_base);
564 iounmap(omap->uhh_base);
565 clk_put(omap->init_60m_fclk);
566 clk_put(omap->usbtll_p2_fck);
567 clk_put(omap->usbhost_p2_fck);
568 clk_put(omap->usbtll_p1_fck);
569 clk_put(omap->usbhost_p1_fck);
570 clk_put(omap->xclk60mhsp2_ck);
571 clk_put(omap->utmi_p2_fck);
572 clk_put(omap->xclk60mhsp1_ck);
573 clk_put(omap->utmi_p1_fck);
574 clk_put(omap->usbtll_ick);
575 clk_put(omap->usbtll_fck);
576 clk_put(omap->usbhost_fs_fck);
577 clk_put(omap->usbhost_hs_fck);
578 clk_put(omap->usbhost_ick);
579 kfree(omap);
580
581 return 0;
582 }
583
584 static bool is_ohci_port(enum usbhs_omap_port_mode pmode)
585 {
586 switch (pmode) {
587 case OMAP_OHCI_PORT_MODE_PHY_6PIN_DATSE0:
588 case OMAP_OHCI_PORT_MODE_PHY_6PIN_DPDM:
589 case OMAP_OHCI_PORT_MODE_PHY_3PIN_DATSE0:
590 case OMAP_OHCI_PORT_MODE_PHY_4PIN_DPDM:
591 case OMAP_OHCI_PORT_MODE_TLL_6PIN_DATSE0:
592 case OMAP_OHCI_PORT_MODE_TLL_6PIN_DPDM:
593 case OMAP_OHCI_PORT_MODE_TLL_3PIN_DATSE0:
594 case OMAP_OHCI_PORT_MODE_TLL_4PIN_DPDM:
595 case OMAP_OHCI_PORT_MODE_TLL_2PIN_DATSE0:
596 case OMAP_OHCI_PORT_MODE_TLL_2PIN_DPDM:
597 return true;
598
599 default:
600 return false;
601 }
602 }
603
604 /*
605 * convert the port-mode enum to a value we can use in the FSLSMODE
606 * field of USBTLL_CHANNEL_CONF
607 */
608 static unsigned ohci_omap3_fslsmode(enum usbhs_omap_port_mode mode)
609 {
610 switch (mode) {
611 case OMAP_USBHS_PORT_MODE_UNUSED:
612 case OMAP_OHCI_PORT_MODE_PHY_6PIN_DATSE0:
613 return OMAP_TLL_FSLSMODE_6PIN_PHY_DAT_SE0;
614
615 case OMAP_OHCI_PORT_MODE_PHY_6PIN_DPDM:
616 return OMAP_TLL_FSLSMODE_6PIN_PHY_DP_DM;
617
618 case OMAP_OHCI_PORT_MODE_PHY_3PIN_DATSE0:
619 return OMAP_TLL_FSLSMODE_3PIN_PHY;
620
621 case OMAP_OHCI_PORT_MODE_PHY_4PIN_DPDM:
622 return OMAP_TLL_FSLSMODE_4PIN_PHY;
623
624 case OMAP_OHCI_PORT_MODE_TLL_6PIN_DATSE0:
625 return OMAP_TLL_FSLSMODE_6PIN_TLL_DAT_SE0;
626
627 case OMAP_OHCI_PORT_MODE_TLL_6PIN_DPDM:
628 return OMAP_TLL_FSLSMODE_6PIN_TLL_DP_DM;
629
630 case OMAP_OHCI_PORT_MODE_TLL_3PIN_DATSE0:
631 return OMAP_TLL_FSLSMODE_3PIN_TLL;
632
633 case OMAP_OHCI_PORT_MODE_TLL_4PIN_DPDM:
634 return OMAP_TLL_FSLSMODE_4PIN_TLL;
635
636 case OMAP_OHCI_PORT_MODE_TLL_2PIN_DATSE0:
637 return OMAP_TLL_FSLSMODE_2PIN_TLL_DAT_SE0;
638
639 case OMAP_OHCI_PORT_MODE_TLL_2PIN_DPDM:
640 return OMAP_TLL_FSLSMODE_2PIN_DAT_DP_DM;
641 default:
642 pr_warning("Invalid port mode, using default\n");
643 return OMAP_TLL_FSLSMODE_6PIN_PHY_DAT_SE0;
644 }
645 }
646
647 static void usbhs_omap_tll_init(struct device *dev, u8 tll_channel_count)
648 {
649 struct usbhs_hcd_omap *omap = dev_get_drvdata(dev);
650 struct usbhs_omap_platform_data *pdata = dev->platform_data;
651 unsigned reg;
652 int i;
653
654 /* Program Common TLL register */
655 reg = usbhs_read(omap->tll_base, OMAP_TLL_SHARED_CONF);
656 reg |= (OMAP_TLL_SHARED_CONF_FCLK_IS_ON
657 | OMAP_TLL_SHARED_CONF_USB_DIVRATION);
658 reg &= ~OMAP_TLL_SHARED_CONF_USB_90D_DDR_EN;
659 reg &= ~OMAP_TLL_SHARED_CONF_USB_180D_SDR_EN;
660
661 usbhs_write(omap->tll_base, OMAP_TLL_SHARED_CONF, reg);
662
663 /* Enable channels now */
664 for (i = 0; i < tll_channel_count; i++) {
665 reg = usbhs_read(omap->tll_base,
666 OMAP_TLL_CHANNEL_CONF(i));
667
668 if (is_ohci_port(pdata->port_mode[i])) {
669 reg |= ohci_omap3_fslsmode(pdata->port_mode[i])
670 << OMAP_TLL_CHANNEL_CONF_FSLSMODE_SHIFT;
671 reg |= OMAP_TLL_CHANNEL_CONF_CHANMODE_FSLS;
672 } else if (pdata->port_mode[i] == OMAP_EHCI_PORT_MODE_TLL) {
673
674 /* Disable AutoIdle, BitStuffing and use SDR Mode */
675 reg &= ~(OMAP_TLL_CHANNEL_CONF_UTMIAUTOIDLE
676 | OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF
677 | OMAP_TLL_CHANNEL_CONF_ULPIDDRMODE);
678
679 reg |= (1 << (i + 1));
680 } else
681 continue;
682
683 reg |= OMAP_TLL_CHANNEL_CONF_CHANEN;
684 usbhs_write(omap->tll_base,
685 OMAP_TLL_CHANNEL_CONF(i), reg);
686
687 usbhs_writeb(omap->tll_base,
688 OMAP_TLL_ULPI_SCRATCH_REGISTER(i), 0xbe);
689 }
690 }
691
692 static int usbhs_enable(struct device *dev)
693 {
694 struct usbhs_hcd_omap *omap = dev_get_drvdata(dev);
695 struct usbhs_omap_platform_data *pdata = &omap->platdata;
696 unsigned long flags = 0;
697 int ret = 0;
698 unsigned long timeout;
699 unsigned reg;
700
701 dev_dbg(dev, "starting TI HSUSB Controller\n");
702 if (!pdata) {
703 dev_dbg(dev, "missing platform_data\n");
704 return -ENODEV;
705 }
706
707 spin_lock_irqsave(&omap->lock, flags);
708 if (omap->count > 0)
709 goto end_count;
710
711 clk_enable(omap->usbhost_ick);
712 clk_enable(omap->usbhost_hs_fck);
713 clk_enable(omap->usbhost_fs_fck);
714 clk_enable(omap->usbtll_fck);
715 clk_enable(omap->usbtll_ick);
716
717 if (pdata->ehci_data->phy_reset) {
718 if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0])) {
719 gpio_request(pdata->ehci_data->reset_gpio_port[0],
720 "USB1 PHY reset");
721 gpio_direction_output
722 (pdata->ehci_data->reset_gpio_port[0], 0);
723 }
724
725 if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1])) {
726 gpio_request(pdata->ehci_data->reset_gpio_port[1],
727 "USB2 PHY reset");
728 gpio_direction_output
729 (pdata->ehci_data->reset_gpio_port[1], 0);
730 }
731
732 /* Hold the PHY in RESET for enough time till DIR is high */
733 udelay(10);
734 }
735
736 omap->usbhs_rev = usbhs_read(omap->uhh_base, OMAP_UHH_REVISION);
737 dev_dbg(dev, "OMAP UHH_REVISION 0x%x\n", omap->usbhs_rev);
738
739 /* perform TLL soft reset, and wait until reset is complete */
740 usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
741 OMAP_USBTLL_SYSCONFIG_SOFTRESET);
742
743 /* Wait for TLL reset to complete */
744 timeout = jiffies + msecs_to_jiffies(1000);
745 while (!(usbhs_read(omap->tll_base, OMAP_USBTLL_SYSSTATUS)
746 & OMAP_USBTLL_SYSSTATUS_RESETDONE)) {
747 cpu_relax();
748
749 if (time_after(jiffies, timeout)) {
750 dev_dbg(dev, "operation timed out\n");
751 ret = -EINVAL;
752 goto err_tll;
753 }
754 }
755
756 dev_dbg(dev, "TLL RESET DONE\n");
757
758 /* (1<<3) = no idle mode only for initial debugging */
759 usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
760 OMAP_USBTLL_SYSCONFIG_ENAWAKEUP |
761 OMAP_USBTLL_SYSCONFIG_SIDLEMODE |
762 OMAP_USBTLL_SYSCONFIG_AUTOIDLE);
763
764 /* Put UHH in NoIdle/NoStandby mode */
765 reg = usbhs_read(omap->uhh_base, OMAP_UHH_SYSCONFIG);
766 if (is_omap_usbhs_rev1(omap)) {
767 reg |= (OMAP_UHH_SYSCONFIG_ENAWAKEUP
768 | OMAP_UHH_SYSCONFIG_SIDLEMODE
769 | OMAP_UHH_SYSCONFIG_CACTIVITY
770 | OMAP_UHH_SYSCONFIG_MIDLEMODE);
771 reg &= ~OMAP_UHH_SYSCONFIG_AUTOIDLE;
772
773
774 } else if (is_omap_usbhs_rev2(omap)) {
775 reg &= ~OMAP4_UHH_SYSCONFIG_IDLEMODE_CLEAR;
776 reg |= OMAP4_UHH_SYSCONFIG_NOIDLE;
777 reg &= ~OMAP4_UHH_SYSCONFIG_STDBYMODE_CLEAR;
778 reg |= OMAP4_UHH_SYSCONFIG_NOSTDBY;
779 }
780
781 usbhs_write(omap->uhh_base, OMAP_UHH_SYSCONFIG, reg);
782
783 reg = usbhs_read(omap->uhh_base, OMAP_UHH_HOSTCONFIG);
784 /* setup ULPI bypass and burst configurations */
785 reg |= (OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN
786 | OMAP_UHH_HOSTCONFIG_INCR8_BURST_EN
787 | OMAP_UHH_HOSTCONFIG_INCR16_BURST_EN);
788 reg |= OMAP4_UHH_HOSTCONFIG_APP_START_CLK;
789 reg &= ~OMAP_UHH_HOSTCONFIG_INCRX_ALIGN_EN;
790
791 if (is_omap_usbhs_rev1(omap)) {
792 if (pdata->port_mode[0] == OMAP_USBHS_PORT_MODE_UNUSED)
793 reg &= ~OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS;
794 if (pdata->port_mode[1] == OMAP_USBHS_PORT_MODE_UNUSED)
795 reg &= ~OMAP_UHH_HOSTCONFIG_P2_CONNECT_STATUS;
796 if (pdata->port_mode[2] == OMAP_USBHS_PORT_MODE_UNUSED)
797 reg &= ~OMAP_UHH_HOSTCONFIG_P3_CONNECT_STATUS;
798
799 /* Bypass the TLL module for PHY mode operation */
800 if (cpu_is_omap3430() && (omap_rev() <= OMAP3430_REV_ES2_1)) {
801 dev_dbg(dev, "OMAP3 ES version <= ES2.1\n");
802 if (is_ehci_phy_mode(pdata->port_mode[0]) ||
803 is_ehci_phy_mode(pdata->port_mode[1]) ||
804 is_ehci_phy_mode(pdata->port_mode[2]))
805 reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_BYPASS;
806 else
807 reg |= OMAP_UHH_HOSTCONFIG_ULPI_BYPASS;
808 } else {
809 dev_dbg(dev, "OMAP3 ES version > ES2.1\n");
810 if (is_ehci_phy_mode(pdata->port_mode[0]))
811 reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS;
812 else
813 reg |= OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS;
814 if (is_ehci_phy_mode(pdata->port_mode[1]))
815 reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS;
816 else
817 reg |= OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS;
818 if (is_ehci_phy_mode(pdata->port_mode[2]))
819 reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS;
820 else
821 reg |= OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS;
822 }
823 } else if (is_omap_usbhs_rev2(omap)) {
824 /* Clear port mode fields for PHY mode*/
825 reg &= ~OMAP4_P1_MODE_CLEAR;
826 reg &= ~OMAP4_P2_MODE_CLEAR;
827
828 if (is_ehci_phy_mode(pdata->port_mode[0])) {
829 ret = clk_set_parent(omap->utmi_p1_fck,
830 omap->xclk60mhsp1_ck);
831 if (ret != 0) {
832 dev_err(dev, "xclk60mhsp1_ck set parent"
833 "failed error:%d\n", ret);
834 goto err_tll;
835 }
836 } else if (is_ehci_tll_mode(pdata->port_mode[0])) {
837 ret = clk_set_parent(omap->utmi_p1_fck,
838 omap->init_60m_fclk);
839 if (ret != 0) {
840 dev_err(dev, "init_60m_fclk set parent"
841 "failed error:%d\n", ret);
842 goto err_tll;
843 }
844 clk_enable(omap->usbhost_p1_fck);
845 clk_enable(omap->usbtll_p1_fck);
846 }
847
848 if (is_ehci_phy_mode(pdata->port_mode[1])) {
849 ret = clk_set_parent(omap->utmi_p2_fck,
850 omap->xclk60mhsp2_ck);
851 if (ret != 0) {
852 dev_err(dev, "xclk60mhsp1_ck set parent"
853 "failed error:%d\n", ret);
854 goto err_tll;
855 }
856 } else if (is_ehci_tll_mode(pdata->port_mode[1])) {
857 ret = clk_set_parent(omap->utmi_p2_fck,
858 omap->init_60m_fclk);
859 if (ret != 0) {
860 dev_err(dev, "init_60m_fclk set parent"
861 "failed error:%d\n", ret);
862 goto err_tll;
863 }
864 clk_enable(omap->usbhost_p2_fck);
865 clk_enable(omap->usbtll_p2_fck);
866 }
867
868 clk_enable(omap->utmi_p1_fck);
869 clk_enable(omap->utmi_p2_fck);
870
871 if (is_ehci_tll_mode(pdata->port_mode[0]) ||
872 (is_ohci_port(pdata->port_mode[0])))
873 reg |= OMAP4_P1_MODE_TLL;
874 else if (is_ehci_hsic_mode(pdata->port_mode[0]))
875 reg |= OMAP4_P1_MODE_HSIC;
876
877 if (is_ehci_tll_mode(pdata->port_mode[1]) ||
878 (is_ohci_port(pdata->port_mode[1])))
879 reg |= OMAP4_P2_MODE_TLL;
880 else if (is_ehci_hsic_mode(pdata->port_mode[1]))
881 reg |= OMAP4_P2_MODE_HSIC;
882 }
883
884 usbhs_write(omap->uhh_base, OMAP_UHH_HOSTCONFIG, reg);
885 dev_dbg(dev, "UHH setup done, uhh_hostconfig=%x\n", reg);
886
887 if (is_ehci_tll_mode(pdata->port_mode[0]) ||
888 is_ehci_tll_mode(pdata->port_mode[1]) ||
889 is_ehci_tll_mode(pdata->port_mode[2]) ||
890 (is_ohci_port(pdata->port_mode[0])) ||
891 (is_ohci_port(pdata->port_mode[1])) ||
892 (is_ohci_port(pdata->port_mode[2]))) {
893
894 /* Enable UTMI mode for required TLL channels */
895 if (is_omap_usbhs_rev2(omap))
896 usbhs_omap_tll_init(dev, OMAP_REV2_TLL_CHANNEL_COUNT);
897 else
898 usbhs_omap_tll_init(dev, OMAP_TLL_CHANNEL_COUNT);
899 }
900
901 if (pdata->ehci_data->phy_reset) {
902 /* Hold the PHY in RESET for enough time till
903 * PHY is settled and ready
904 */
905 udelay(10);
906
907 if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
908 gpio_set_value
909 (pdata->ehci_data->reset_gpio_port[0], 1);
910
911 if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
912 gpio_set_value
913 (pdata->ehci_data->reset_gpio_port[1], 1);
914 }
915
916 end_count:
917 omap->count++;
918 spin_unlock_irqrestore(&omap->lock, flags);
919 return 0;
920
921 err_tll:
922 if (pdata->ehci_data->phy_reset) {
923 if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
924 gpio_free(pdata->ehci_data->reset_gpio_port[0]);
925
926 if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
927 gpio_free(pdata->ehci_data->reset_gpio_port[1]);
928 }
929
930 clk_disable(omap->usbtll_ick);
931 clk_disable(omap->usbtll_fck);
932 clk_disable(omap->usbhost_fs_fck);
933 clk_disable(omap->usbhost_hs_fck);
934 clk_disable(omap->usbhost_ick);
935 spin_unlock_irqrestore(&omap->lock, flags);
936 return ret;
937 }
938
939 static void usbhs_disable(struct device *dev)
940 {
941 struct usbhs_hcd_omap *omap = dev_get_drvdata(dev);
942 struct usbhs_omap_platform_data *pdata = &omap->platdata;
943 unsigned long flags = 0;
944 unsigned long timeout;
945
946 dev_dbg(dev, "stopping TI HSUSB Controller\n");
947
948 spin_lock_irqsave(&omap->lock, flags);
949
950 if (omap->count == 0)
951 goto end_disble;
952
953 omap->count--;
954
955 if (omap->count != 0)
956 goto end_disble;
957
958 /* Reset OMAP modules for insmod/rmmod to work */
959 usbhs_write(omap->uhh_base, OMAP_UHH_SYSCONFIG,
960 is_omap_usbhs_rev2(omap) ?
961 OMAP4_UHH_SYSCONFIG_SOFTRESET :
962 OMAP_UHH_SYSCONFIG_SOFTRESET);
963
964 timeout = jiffies + msecs_to_jiffies(100);
965 while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)
966 & (1 << 0))) {
967 cpu_relax();
968
969 if (time_after(jiffies, timeout))
970 dev_dbg(dev, "operation timed out\n");
971 }
972
973 while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)
974 & (1 << 1))) {
975 cpu_relax();
976
977 if (time_after(jiffies, timeout))
978 dev_dbg(dev, "operation timed out\n");
979 }
980
981 while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)
982 & (1 << 2))) {
983 cpu_relax();
984
985 if (time_after(jiffies, timeout))
986 dev_dbg(dev, "operation timed out\n");
987 }
988
989 usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG, (1 << 1));
990
991 while (!(usbhs_read(omap->tll_base, OMAP_USBTLL_SYSSTATUS)
992 & (1 << 0))) {
993 cpu_relax();
994
995 if (time_after(jiffies, timeout))
996 dev_dbg(dev, "operation timed out\n");
997 }
998
999 if (is_omap_usbhs_rev2(omap)) {
1000 if (is_ehci_tll_mode(pdata->port_mode[0]))
1001 clk_enable(omap->usbtll_p1_fck);
1002 if (is_ehci_tll_mode(pdata->port_mode[1]))
1003 clk_enable(omap->usbtll_p2_fck);
1004 clk_disable(omap->utmi_p2_fck);
1005 clk_disable(omap->utmi_p1_fck);
1006 }
1007
1008 clk_disable(omap->usbtll_ick);
1009 clk_disable(omap->usbtll_fck);
1010 clk_disable(omap->usbhost_fs_fck);
1011 clk_disable(omap->usbhost_hs_fck);
1012 clk_disable(omap->usbhost_ick);
1013
1014 /* The gpio_free migh sleep; so unlock the spinlock */
1015 spin_unlock_irqrestore(&omap->lock, flags);
1016
1017 if (pdata->ehci_data->phy_reset) {
1018 if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
1019 gpio_free(pdata->ehci_data->reset_gpio_port[0]);
1020
1021 if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
1022 gpio_free(pdata->ehci_data->reset_gpio_port[1]);
1023 }
1024 return;
1025
1026 end_disble:
1027 spin_unlock_irqrestore(&omap->lock, flags);
1028 }
1029
1030 int omap_usbhs_enable(struct device *dev)
1031 {
1032 return usbhs_enable(dev->parent);
1033 }
1034 EXPORT_SYMBOL_GPL(omap_usbhs_enable);
1035
1036 void omap_usbhs_disable(struct device *dev)
1037 {
1038 usbhs_disable(dev->parent);
1039 }
1040 EXPORT_SYMBOL_GPL(omap_usbhs_disable);
1041
1042 static struct platform_driver usbhs_omap_driver = {
1043 .driver = {
1044 .name = (char *)usbhs_driver_name,
1045 .owner = THIS_MODULE,
1046 },
1047 .remove = __exit_p(usbhs_omap_remove),
1048 };
1049
1050 MODULE_AUTHOR("Keshava Munegowda <keshava_mgowda@ti.com>");
1051 MODULE_ALIAS("platform:" USBHS_DRIVER_NAME);
1052 MODULE_LICENSE("GPL v2");
1053 MODULE_DESCRIPTION("usb host common core driver for omap EHCI and OHCI");
1054
1055 static int __init omap_usbhs_drvinit(void)
1056 {
1057 return platform_driver_probe(&usbhs_omap_driver, usbhs_omap_probe);
1058 }
1059
1060 /*
1061 * init before ehci and ohci drivers;
1062 * The usbhs core driver should be initialized much before
1063 * the omap ehci and ohci probe functions are called.
1064 */
1065 fs_initcall(omap_usbhs_drvinit);
1066
1067 static void __exit omap_usbhs_drvexit(void)
1068 {
1069 platform_driver_unregister(&usbhs_omap_driver);
1070 }
1071 module_exit(omap_usbhs_drvexit);
kernel-based virtual machine