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Btrfs: remove lockdep magic from btrfs_next_leaf
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / mfd / omap-usb-host.c
blob3ab9ffa00aadf8c805477e2c323c2f1f889da2a8
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 goto err_end;
285 }
286
287 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "ohci");
288 if (!res) {
289 dev_err(dev, "OHCI get resource IORESOURCE_MEM failed\n");
290 ret = -ENODEV;
291 goto err_ehci;
292 }
293 resources[0] = *res;
294
295 res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "ohci-irq");
296 if (!res) {
297 dev_err(dev, "OHCI get resource IORESOURCE_IRQ failed\n");
298 ret = -ENODEV;
299 goto err_ehci;
300 }
301 resources[1] = *res;
302
303 ohci = omap_usbhs_alloc_child(OMAP_OHCI_DEVICE, resources, 2, ohci_data,
304 sizeof(*ohci_data), dev);
305 if (!ohci) {
306 dev_err(dev, "omap_usbhs_alloc_child failed\n");
307 goto err_ehci;
308 }
309
310 return 0;
311
312 err_ehci:
313 platform_device_put(ehci);
314
315 err_end:
316 return ret;
317 }
318
319 /**
320 * usbhs_omap_probe - initialize TI-based HCDs
321 *
322 * Allocates basic resources for this USB host controller.
323 */
324 static int __devinit usbhs_omap_probe(struct platform_device *pdev)
325 {
326 struct device *dev = &pdev->dev;
327 struct usbhs_omap_platform_data *pdata = dev->platform_data;
328 struct usbhs_hcd_omap *omap;
329 struct resource *res;
330 int ret = 0;
331 int i;
332
333 if (!pdata) {
334 dev_err(dev, "Missing platform data\n");
335 ret = -ENOMEM;
336 goto end_probe;
337 }
338
339 omap = kzalloc(sizeof(*omap), GFP_KERNEL);
340 if (!omap) {
341 dev_err(dev, "Memory allocation failed\n");
342 ret = -ENOMEM;
343 goto end_probe;
344 }
345
346 spin_lock_init(&omap->lock);
347
348 for (i = 0; i < OMAP3_HS_USB_PORTS; i++)
349 omap->platdata.port_mode[i] = pdata->port_mode[i];
350
351 omap->platdata.ehci_data = pdata->ehci_data;
352 omap->platdata.ohci_data = pdata->ohci_data;
353
354 omap->usbhost_ick = clk_get(dev, "usbhost_ick");
355 if (IS_ERR(omap->usbhost_ick)) {
356 ret = PTR_ERR(omap->usbhost_ick);
357 dev_err(dev, "usbhost_ick failed error:%d\n", ret);
358 goto err_end;
359 }
360
361 omap->usbhost_hs_fck = clk_get(dev, "hs_fck");
362 if (IS_ERR(omap->usbhost_hs_fck)) {
363 ret = PTR_ERR(omap->usbhost_hs_fck);
364 dev_err(dev, "usbhost_hs_fck failed error:%d\n", ret);
365 goto err_usbhost_ick;
366 }
367
368 omap->usbhost_fs_fck = clk_get(dev, "fs_fck");
369 if (IS_ERR(omap->usbhost_fs_fck)) {
370 ret = PTR_ERR(omap->usbhost_fs_fck);
371 dev_err(dev, "usbhost_fs_fck failed error:%d\n", ret);
372 goto err_usbhost_hs_fck;
373 }
374
375 omap->usbtll_fck = clk_get(dev, "usbtll_fck");
376 if (IS_ERR(omap->usbtll_fck)) {
377 ret = PTR_ERR(omap->usbtll_fck);
378 dev_err(dev, "usbtll_fck failed error:%d\n", ret);
379 goto err_usbhost_fs_fck;
380 }
381
382 omap->usbtll_ick = clk_get(dev, "usbtll_ick");
383 if (IS_ERR(omap->usbtll_ick)) {
384 ret = PTR_ERR(omap->usbtll_ick);
385 dev_err(dev, "usbtll_ick failed error:%d\n", ret);
386 goto err_usbtll_fck;
387 }
388
389 omap->utmi_p1_fck = clk_get(dev, "utmi_p1_gfclk");
390 if (IS_ERR(omap->utmi_p1_fck)) {
391 ret = PTR_ERR(omap->utmi_p1_fck);
392 dev_err(dev, "utmi_p1_gfclk failed error:%d\n", ret);
393 goto err_usbtll_ick;
394 }
395
396 omap->xclk60mhsp1_ck = clk_get(dev, "xclk60mhsp1_ck");
397 if (IS_ERR(omap->xclk60mhsp1_ck)) {
398 ret = PTR_ERR(omap->xclk60mhsp1_ck);
399 dev_err(dev, "xclk60mhsp1_ck failed error:%d\n", ret);
400 goto err_utmi_p1_fck;
401 }
402
403 omap->utmi_p2_fck = clk_get(dev, "utmi_p2_gfclk");
404 if (IS_ERR(omap->utmi_p2_fck)) {
405 ret = PTR_ERR(omap->utmi_p2_fck);
406 dev_err(dev, "utmi_p2_gfclk failed error:%d\n", ret);
407 goto err_xclk60mhsp1_ck;
408 }
409
410 omap->xclk60mhsp2_ck = clk_get(dev, "xclk60mhsp2_ck");
411 if (IS_ERR(omap->xclk60mhsp2_ck)) {
412 ret = PTR_ERR(omap->xclk60mhsp2_ck);
413 dev_err(dev, "xclk60mhsp2_ck failed error:%d\n", ret);
414 goto err_utmi_p2_fck;
415 }
416
417 omap->usbhost_p1_fck = clk_get(dev, "usb_host_hs_utmi_p1_clk");
418 if (IS_ERR(omap->usbhost_p1_fck)) {
419 ret = PTR_ERR(omap->usbhost_p1_fck);
420 dev_err(dev, "usbhost_p1_fck failed error:%d\n", ret);
421 goto err_xclk60mhsp2_ck;
422 }
423
424 omap->usbtll_p1_fck = clk_get(dev, "usb_tll_hs_usb_ch0_clk");
425 if (IS_ERR(omap->usbtll_p1_fck)) {
426 ret = PTR_ERR(omap->usbtll_p1_fck);
427 dev_err(dev, "usbtll_p1_fck failed error:%d\n", ret);
428 goto err_usbhost_p1_fck;
429 }
430
431 omap->usbhost_p2_fck = clk_get(dev, "usb_host_hs_utmi_p2_clk");
432 if (IS_ERR(omap->usbhost_p2_fck)) {
433 ret = PTR_ERR(omap->usbhost_p2_fck);
434 dev_err(dev, "usbhost_p2_fck failed error:%d\n", ret);
435 goto err_usbtll_p1_fck;
436 }
437
438 omap->usbtll_p2_fck = clk_get(dev, "usb_tll_hs_usb_ch1_clk");
439 if (IS_ERR(omap->usbtll_p2_fck)) {
440 ret = PTR_ERR(omap->usbtll_p2_fck);
441 dev_err(dev, "usbtll_p2_fck failed error:%d\n", ret);
442 goto err_usbhost_p2_fck;
443 }
444
445 omap->init_60m_fclk = clk_get(dev, "init_60m_fclk");
446 if (IS_ERR(omap->init_60m_fclk)) {
447 ret = PTR_ERR(omap->init_60m_fclk);
448 dev_err(dev, "init_60m_fclk failed error:%d\n", ret);
449 goto err_usbtll_p2_fck;
450 }
451
452 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "uhh");
453 if (!res) {
454 dev_err(dev, "UHH EHCI get resource failed\n");
455 ret = -ENODEV;
456 goto err_init_60m_fclk;
457 }
458
459 omap->uhh_base = ioremap(res->start, resource_size(res));
460 if (!omap->uhh_base) {
461 dev_err(dev, "UHH ioremap failed\n");
462 ret = -ENOMEM;
463 goto err_init_60m_fclk;
464 }
465
466 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "tll");
467 if (!res) {
468 dev_err(dev, "UHH EHCI get resource failed\n");
469 ret = -ENODEV;
470 goto err_tll;
471 }
472
473 omap->tll_base = ioremap(res->start, resource_size(res));
474 if (!omap->tll_base) {
475 dev_err(dev, "TLL ioremap failed\n");
476 ret = -ENOMEM;
477 goto err_tll;
478 }
479
480 platform_set_drvdata(pdev, omap);
481
482 ret = omap_usbhs_alloc_children(pdev);
483 if (ret) {
484 dev_err(dev, "omap_usbhs_alloc_children failed\n");
485 goto err_alloc;
486 }
487
488 goto end_probe;
489
490 err_alloc:
491 iounmap(omap->tll_base);
492
493 err_tll:
494 iounmap(omap->uhh_base);
495
496 err_init_60m_fclk:
497 clk_put(omap->init_60m_fclk);
498
499 err_usbtll_p2_fck:
500 clk_put(omap->usbtll_p2_fck);
501
502 err_usbhost_p2_fck:
503 clk_put(omap->usbhost_p2_fck);
504
505 err_usbtll_p1_fck:
506 clk_put(omap->usbtll_p1_fck);
507
508 err_usbhost_p1_fck:
509 clk_put(omap->usbhost_p1_fck);
510
511 err_xclk60mhsp2_ck:
512 clk_put(omap->xclk60mhsp2_ck);
513
514 err_utmi_p2_fck:
515 clk_put(omap->utmi_p2_fck);
516
517 err_xclk60mhsp1_ck:
518 clk_put(omap->xclk60mhsp1_ck);
519
520 err_utmi_p1_fck:
521 clk_put(omap->utmi_p1_fck);
522
523 err_usbtll_ick:
524 clk_put(omap->usbtll_ick);
525
526 err_usbtll_fck:
527 clk_put(omap->usbtll_fck);
528
529 err_usbhost_fs_fck:
530 clk_put(omap->usbhost_fs_fck);
531
532 err_usbhost_hs_fck:
533 clk_put(omap->usbhost_hs_fck);
534
535 err_usbhost_ick:
536 clk_put(omap->usbhost_ick);
537
538 err_end:
539 kfree(omap);
540
541 end_probe:
542 return ret;
543 }
544
545 /**
546 * usbhs_omap_remove - shutdown processing for UHH & TLL HCDs
547 * @pdev: USB Host Controller being removed
548 *
549 * Reverses the effect of usbhs_omap_probe().
550 */
551 static int __devexit usbhs_omap_remove(struct platform_device *pdev)
552 {
553 struct usbhs_hcd_omap *omap = platform_get_drvdata(pdev);
554
555 if (omap->count != 0) {
556 dev_err(&pdev->dev,
557 "Either EHCI or OHCI is still using usbhs core\n");
558 return -EBUSY;
559 }
560
561 iounmap(omap->tll_base);
562 iounmap(omap->uhh_base);
563 clk_put(omap->init_60m_fclk);
564 clk_put(omap->usbtll_p2_fck);
565 clk_put(omap->usbhost_p2_fck);
566 clk_put(omap->usbtll_p1_fck);
567 clk_put(omap->usbhost_p1_fck);
568 clk_put(omap->xclk60mhsp2_ck);
569 clk_put(omap->utmi_p2_fck);
570 clk_put(omap->xclk60mhsp1_ck);
571 clk_put(omap->utmi_p1_fck);
572 clk_put(omap->usbtll_ick);
573 clk_put(omap->usbtll_fck);
574 clk_put(omap->usbhost_fs_fck);
575 clk_put(omap->usbhost_hs_fck);
576 clk_put(omap->usbhost_ick);
577 kfree(omap);
578
579 return 0;
580 }
581
582 static bool is_ohci_port(enum usbhs_omap_port_mode pmode)
583 {
584 switch (pmode) {
585 case OMAP_OHCI_PORT_MODE_PHY_6PIN_DATSE0:
586 case OMAP_OHCI_PORT_MODE_PHY_6PIN_DPDM:
587 case OMAP_OHCI_PORT_MODE_PHY_3PIN_DATSE0:
588 case OMAP_OHCI_PORT_MODE_PHY_4PIN_DPDM:
589 case OMAP_OHCI_PORT_MODE_TLL_6PIN_DATSE0:
590 case OMAP_OHCI_PORT_MODE_TLL_6PIN_DPDM:
591 case OMAP_OHCI_PORT_MODE_TLL_3PIN_DATSE0:
592 case OMAP_OHCI_PORT_MODE_TLL_4PIN_DPDM:
593 case OMAP_OHCI_PORT_MODE_TLL_2PIN_DATSE0:
594 case OMAP_OHCI_PORT_MODE_TLL_2PIN_DPDM:
595 return true;
596
597 default:
598 return false;
599 }
600 }
601
602 /*
603 * convert the port-mode enum to a value we can use in the FSLSMODE
604 * field of USBTLL_CHANNEL_CONF
605 */
606 static unsigned ohci_omap3_fslsmode(enum usbhs_omap_port_mode mode)
607 {
608 switch (mode) {
609 case OMAP_USBHS_PORT_MODE_UNUSED:
610 case OMAP_OHCI_PORT_MODE_PHY_6PIN_DATSE0:
611 return OMAP_TLL_FSLSMODE_6PIN_PHY_DAT_SE0;
612
613 case OMAP_OHCI_PORT_MODE_PHY_6PIN_DPDM:
614 return OMAP_TLL_FSLSMODE_6PIN_PHY_DP_DM;
615
616 case OMAP_OHCI_PORT_MODE_PHY_3PIN_DATSE0:
617 return OMAP_TLL_FSLSMODE_3PIN_PHY;
618
619 case OMAP_OHCI_PORT_MODE_PHY_4PIN_DPDM:
620 return OMAP_TLL_FSLSMODE_4PIN_PHY;
621
622 case OMAP_OHCI_PORT_MODE_TLL_6PIN_DATSE0:
623 return OMAP_TLL_FSLSMODE_6PIN_TLL_DAT_SE0;
624
625 case OMAP_OHCI_PORT_MODE_TLL_6PIN_DPDM:
626 return OMAP_TLL_FSLSMODE_6PIN_TLL_DP_DM;
627
628 case OMAP_OHCI_PORT_MODE_TLL_3PIN_DATSE0:
629 return OMAP_TLL_FSLSMODE_3PIN_TLL;
630
631 case OMAP_OHCI_PORT_MODE_TLL_4PIN_DPDM:
632 return OMAP_TLL_FSLSMODE_4PIN_TLL;
633
634 case OMAP_OHCI_PORT_MODE_TLL_2PIN_DATSE0:
635 return OMAP_TLL_FSLSMODE_2PIN_TLL_DAT_SE0;
636
637 case OMAP_OHCI_PORT_MODE_TLL_2PIN_DPDM:
638 return OMAP_TLL_FSLSMODE_2PIN_DAT_DP_DM;
639 default:
640 pr_warning("Invalid port mode, using default\n");
641 return OMAP_TLL_FSLSMODE_6PIN_PHY_DAT_SE0;
642 }
643 }
644
645 static void usbhs_omap_tll_init(struct device *dev, u8 tll_channel_count)
646 {
647 struct usbhs_hcd_omap *omap = dev_get_drvdata(dev);
648 struct usbhs_omap_platform_data *pdata = dev->platform_data;
649 unsigned reg;
650 int i;
651
652 /* Program Common TLL register */
653 reg = usbhs_read(omap->tll_base, OMAP_TLL_SHARED_CONF);
654 reg |= (OMAP_TLL_SHARED_CONF_FCLK_IS_ON
655 | OMAP_TLL_SHARED_CONF_USB_DIVRATION);
656 reg &= ~OMAP_TLL_SHARED_CONF_USB_90D_DDR_EN;
657 reg &= ~OMAP_TLL_SHARED_CONF_USB_180D_SDR_EN;
658
659 usbhs_write(omap->tll_base, OMAP_TLL_SHARED_CONF, reg);
660
661 /* Enable channels now */
662 for (i = 0; i < tll_channel_count; i++) {
663 reg = usbhs_read(omap->tll_base,
664 OMAP_TLL_CHANNEL_CONF(i));
665
666 if (is_ohci_port(pdata->port_mode[i])) {
667 reg |= ohci_omap3_fslsmode(pdata->port_mode[i])
668 << OMAP_TLL_CHANNEL_CONF_FSLSMODE_SHIFT;
669 reg |= OMAP_TLL_CHANNEL_CONF_CHANMODE_FSLS;
670 } else if (pdata->port_mode[i] == OMAP_EHCI_PORT_MODE_TLL) {
671
672 /* Disable AutoIdle, BitStuffing and use SDR Mode */
673 reg &= ~(OMAP_TLL_CHANNEL_CONF_UTMIAUTOIDLE
674 | OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF
675 | OMAP_TLL_CHANNEL_CONF_ULPIDDRMODE);
676
677 reg |= (1 << (i + 1));
678 } else
679 continue;
680
681 reg |= OMAP_TLL_CHANNEL_CONF_CHANEN;
682 usbhs_write(omap->tll_base,
683 OMAP_TLL_CHANNEL_CONF(i), reg);
684
685 usbhs_writeb(omap->tll_base,
686 OMAP_TLL_ULPI_SCRATCH_REGISTER(i), 0xbe);
687 }
688 }
689
690 static int usbhs_enable(struct device *dev)
691 {
692 struct usbhs_hcd_omap *omap = dev_get_drvdata(dev);
693 struct usbhs_omap_platform_data *pdata = &omap->platdata;
694 unsigned long flags = 0;
695 int ret = 0;
696 unsigned long timeout;
697 unsigned reg;
698
699 dev_dbg(dev, "starting TI HSUSB Controller\n");
700 if (!pdata) {
701 dev_dbg(dev, "missing platform_data\n");
702 return -ENODEV;
703 }
704
705 spin_lock_irqsave(&omap->lock, flags);
706 if (omap->count > 0)
707 goto end_count;
708
709 clk_enable(omap->usbhost_ick);
710 clk_enable(omap->usbhost_hs_fck);
711 clk_enable(omap->usbhost_fs_fck);
712 clk_enable(omap->usbtll_fck);
713 clk_enable(omap->usbtll_ick);
714
715 if (pdata->ehci_data->phy_reset) {
716 if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0])) {
717 gpio_request(pdata->ehci_data->reset_gpio_port[0],
718 "USB1 PHY reset");
719 gpio_direction_output
720 (pdata->ehci_data->reset_gpio_port[0], 0);
721 }
722
723 if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1])) {
724 gpio_request(pdata->ehci_data->reset_gpio_port[1],
725 "USB2 PHY reset");
726 gpio_direction_output
727 (pdata->ehci_data->reset_gpio_port[1], 0);
728 }
729
730 /* Hold the PHY in RESET for enough time till DIR is high */
731 udelay(10);
732 }
733
734 omap->usbhs_rev = usbhs_read(omap->uhh_base, OMAP_UHH_REVISION);
735 dev_dbg(dev, "OMAP UHH_REVISION 0x%x\n", omap->usbhs_rev);
736
737 /* perform TLL soft reset, and wait until reset is complete */
738 usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
739 OMAP_USBTLL_SYSCONFIG_SOFTRESET);
740
741 /* Wait for TLL reset to complete */
742 timeout = jiffies + msecs_to_jiffies(1000);
743 while (!(usbhs_read(omap->tll_base, OMAP_USBTLL_SYSSTATUS)
744 & OMAP_USBTLL_SYSSTATUS_RESETDONE)) {
745 cpu_relax();
746
747 if (time_after(jiffies, timeout)) {
748 dev_dbg(dev, "operation timed out\n");
749 ret = -EINVAL;
750 goto err_tll;
751 }
752 }
753
754 dev_dbg(dev, "TLL RESET DONE\n");
755
756 /* (1<<3) = no idle mode only for initial debugging */
757 usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG,
758 OMAP_USBTLL_SYSCONFIG_ENAWAKEUP |
759 OMAP_USBTLL_SYSCONFIG_SIDLEMODE |
760 OMAP_USBTLL_SYSCONFIG_AUTOIDLE);
761
762 /* Put UHH in NoIdle/NoStandby mode */
763 reg = usbhs_read(omap->uhh_base, OMAP_UHH_SYSCONFIG);
764 if (is_omap_usbhs_rev1(omap)) {
765 reg |= (OMAP_UHH_SYSCONFIG_ENAWAKEUP
766 | OMAP_UHH_SYSCONFIG_SIDLEMODE
767 | OMAP_UHH_SYSCONFIG_CACTIVITY
768 | OMAP_UHH_SYSCONFIG_MIDLEMODE);
769 reg &= ~OMAP_UHH_SYSCONFIG_AUTOIDLE;
770
771
772 } else if (is_omap_usbhs_rev2(omap)) {
773 reg &= ~OMAP4_UHH_SYSCONFIG_IDLEMODE_CLEAR;
774 reg |= OMAP4_UHH_SYSCONFIG_NOIDLE;
775 reg &= ~OMAP4_UHH_SYSCONFIG_STDBYMODE_CLEAR;
776 reg |= OMAP4_UHH_SYSCONFIG_NOSTDBY;
777 }
778
779 usbhs_write(omap->uhh_base, OMAP_UHH_SYSCONFIG, reg);
780
781 reg = usbhs_read(omap->uhh_base, OMAP_UHH_HOSTCONFIG);
782 /* setup ULPI bypass and burst configurations */
783 reg |= (OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN
784 | OMAP_UHH_HOSTCONFIG_INCR8_BURST_EN
785 | OMAP_UHH_HOSTCONFIG_INCR16_BURST_EN);
786 reg |= OMAP4_UHH_HOSTCONFIG_APP_START_CLK;
787 reg &= ~OMAP_UHH_HOSTCONFIG_INCRX_ALIGN_EN;
788
789 if (is_omap_usbhs_rev1(omap)) {
790 if (pdata->port_mode[0] == OMAP_USBHS_PORT_MODE_UNUSED)
791 reg &= ~OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS;
792 if (pdata->port_mode[1] == OMAP_USBHS_PORT_MODE_UNUSED)
793 reg &= ~OMAP_UHH_HOSTCONFIG_P2_CONNECT_STATUS;
794 if (pdata->port_mode[2] == OMAP_USBHS_PORT_MODE_UNUSED)
795 reg &= ~OMAP_UHH_HOSTCONFIG_P3_CONNECT_STATUS;
796
797 /* Bypass the TLL module for PHY mode operation */
798 if (cpu_is_omap3430() && (omap_rev() <= OMAP3430_REV_ES2_1)) {
799 dev_dbg(dev, "OMAP3 ES version <= ES2.1\n");
800 if (is_ehci_phy_mode(pdata->port_mode[0]) ||
801 is_ehci_phy_mode(pdata->port_mode[1]) ||
802 is_ehci_phy_mode(pdata->port_mode[2]))
803 reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_BYPASS;
804 else
805 reg |= OMAP_UHH_HOSTCONFIG_ULPI_BYPASS;
806 } else {
807 dev_dbg(dev, "OMAP3 ES version > ES2.1\n");
808 if (is_ehci_phy_mode(pdata->port_mode[0]))
809 reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS;
810 else
811 reg |= OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS;
812 if (is_ehci_phy_mode(pdata->port_mode[1]))
813 reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS;
814 else
815 reg |= OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS;
816 if (is_ehci_phy_mode(pdata->port_mode[2]))
817 reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS;
818 else
819 reg |= OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS;
820 }
821 } else if (is_omap_usbhs_rev2(omap)) {
822 /* Clear port mode fields for PHY mode*/
823 reg &= ~OMAP4_P1_MODE_CLEAR;
824 reg &= ~OMAP4_P2_MODE_CLEAR;
825
826 if (is_ehci_phy_mode(pdata->port_mode[0])) {
827 ret = clk_set_parent(omap->utmi_p1_fck,
828 omap->xclk60mhsp1_ck);
829 if (ret != 0) {
830 dev_err(dev, "xclk60mhsp1_ck set parent"
831 "failed error:%d\n", ret);
832 goto err_tll;
833 }
834 } else if (is_ehci_tll_mode(pdata->port_mode[0])) {
835 ret = clk_set_parent(omap->utmi_p1_fck,
836 omap->init_60m_fclk);
837 if (ret != 0) {
838 dev_err(dev, "init_60m_fclk set parent"
839 "failed error:%d\n", ret);
840 goto err_tll;
841 }
842 clk_enable(omap->usbhost_p1_fck);
843 clk_enable(omap->usbtll_p1_fck);
844 }
845
846 if (is_ehci_phy_mode(pdata->port_mode[1])) {
847 ret = clk_set_parent(omap->utmi_p2_fck,
848 omap->xclk60mhsp2_ck);
849 if (ret != 0) {
850 dev_err(dev, "xclk60mhsp1_ck set parent"
851 "failed error:%d\n", ret);
852 goto err_tll;
853 }
854 } else if (is_ehci_tll_mode(pdata->port_mode[1])) {
855 ret = clk_set_parent(omap->utmi_p2_fck,
856 omap->init_60m_fclk);
857 if (ret != 0) {
858 dev_err(dev, "init_60m_fclk set parent"
859 "failed error:%d\n", ret);
860 goto err_tll;
861 }
862 clk_enable(omap->usbhost_p2_fck);
863 clk_enable(omap->usbtll_p2_fck);
864 }
865
866 clk_enable(omap->utmi_p1_fck);
867 clk_enable(omap->utmi_p2_fck);
868
869 if (is_ehci_tll_mode(pdata->port_mode[0]) ||
870 (is_ohci_port(pdata->port_mode[0])))
871 reg |= OMAP4_P1_MODE_TLL;
872 else if (is_ehci_hsic_mode(pdata->port_mode[0]))
873 reg |= OMAP4_P1_MODE_HSIC;
874
875 if (is_ehci_tll_mode(pdata->port_mode[1]) ||
876 (is_ohci_port(pdata->port_mode[1])))
877 reg |= OMAP4_P2_MODE_TLL;
878 else if (is_ehci_hsic_mode(pdata->port_mode[1]))
879 reg |= OMAP4_P2_MODE_HSIC;
880 }
881
882 usbhs_write(omap->uhh_base, OMAP_UHH_HOSTCONFIG, reg);
883 dev_dbg(dev, "UHH setup done, uhh_hostconfig=%x\n", reg);
884
885 if (is_ehci_tll_mode(pdata->port_mode[0]) ||
886 is_ehci_tll_mode(pdata->port_mode[1]) ||
887 is_ehci_tll_mode(pdata->port_mode[2]) ||
888 (is_ohci_port(pdata->port_mode[0])) ||
889 (is_ohci_port(pdata->port_mode[1])) ||
890 (is_ohci_port(pdata->port_mode[2]))) {
891
892 /* Enable UTMI mode for required TLL channels */
893 if (is_omap_usbhs_rev2(omap))
894 usbhs_omap_tll_init(dev, OMAP_REV2_TLL_CHANNEL_COUNT);
895 else
896 usbhs_omap_tll_init(dev, OMAP_TLL_CHANNEL_COUNT);
897 }
898
899 if (pdata->ehci_data->phy_reset) {
900 /* Hold the PHY in RESET for enough time till
901 * PHY is settled and ready
902 */
903 udelay(10);
904
905 if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
906 gpio_set_value
907 (pdata->ehci_data->reset_gpio_port[0], 1);
908
909 if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
910 gpio_set_value
911 (pdata->ehci_data->reset_gpio_port[1], 1);
912 }
913
914 end_count:
915 omap->count++;
916 spin_unlock_irqrestore(&omap->lock, flags);
917 return 0;
918
919 err_tll:
920 if (pdata->ehci_data->phy_reset) {
921 if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
922 gpio_free(pdata->ehci_data->reset_gpio_port[0]);
923
924 if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
925 gpio_free(pdata->ehci_data->reset_gpio_port[1]);
926 }
927
928 clk_disable(omap->usbtll_ick);
929 clk_disable(omap->usbtll_fck);
930 clk_disable(omap->usbhost_fs_fck);
931 clk_disable(omap->usbhost_hs_fck);
932 clk_disable(omap->usbhost_ick);
933 spin_unlock_irqrestore(&omap->lock, flags);
934 return ret;
935 }
936
937 static void usbhs_disable(struct device *dev)
938 {
939 struct usbhs_hcd_omap *omap = dev_get_drvdata(dev);
940 struct usbhs_omap_platform_data *pdata = &omap->platdata;
941 unsigned long flags = 0;
942 unsigned long timeout;
943
944 dev_dbg(dev, "stopping TI HSUSB Controller\n");
945
946 spin_lock_irqsave(&omap->lock, flags);
947
948 if (omap->count == 0)
949 goto end_disble;
950
951 omap->count--;
952
953 if (omap->count != 0)
954 goto end_disble;
955
956 /* Reset OMAP modules for insmod/rmmod to work */
957 usbhs_write(omap->uhh_base, OMAP_UHH_SYSCONFIG,
958 is_omap_usbhs_rev2(omap) ?
959 OMAP4_UHH_SYSCONFIG_SOFTRESET :
960 OMAP_UHH_SYSCONFIG_SOFTRESET);
961
962 timeout = jiffies + msecs_to_jiffies(100);
963 while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)
964 & (1 << 0))) {
965 cpu_relax();
966
967 if (time_after(jiffies, timeout))
968 dev_dbg(dev, "operation timed out\n");
969 }
970
971 while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)
972 & (1 << 1))) {
973 cpu_relax();
974
975 if (time_after(jiffies, timeout))
976 dev_dbg(dev, "operation timed out\n");
977 }
978
979 while (!(usbhs_read(omap->uhh_base, OMAP_UHH_SYSSTATUS)
980 & (1 << 2))) {
981 cpu_relax();
982
983 if (time_after(jiffies, timeout))
984 dev_dbg(dev, "operation timed out\n");
985 }
986
987 usbhs_write(omap->tll_base, OMAP_USBTLL_SYSCONFIG, (1 << 1));
988
989 while (!(usbhs_read(omap->tll_base, OMAP_USBTLL_SYSSTATUS)
990 & (1 << 0))) {
991 cpu_relax();
992
993 if (time_after(jiffies, timeout))
994 dev_dbg(dev, "operation timed out\n");
995 }
996
997 if (pdata->ehci_data->phy_reset) {
998 if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0]))
999 gpio_free(pdata->ehci_data->reset_gpio_port[0]);
1000
1001 if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1]))
1002 gpio_free(pdata->ehci_data->reset_gpio_port[1]);
1003 }
1004
1005 clk_disable(omap->utmi_p2_fck);
1006 clk_disable(omap->utmi_p1_fck);
1007 clk_disable(omap->usbtll_ick);
1008 clk_disable(omap->usbtll_fck);
1009 clk_disable(omap->usbhost_fs_fck);
1010 clk_disable(omap->usbhost_hs_fck);
1011 clk_disable(omap->usbhost_ick);
1012
1013 end_disble:
1014 spin_unlock_irqrestore(&omap->lock, flags);
1015 }
1016
1017 int omap_usbhs_enable(struct device *dev)
1018 {
1019 return usbhs_enable(dev->parent);
1020 }
1021 EXPORT_SYMBOL_GPL(omap_usbhs_enable);
1022
1023 void omap_usbhs_disable(struct device *dev)
1024 {
1025 usbhs_disable(dev->parent);
1026 }
1027 EXPORT_SYMBOL_GPL(omap_usbhs_disable);
1028
1029 static struct platform_driver usbhs_omap_driver = {
1030 .driver = {
1031 .name = (char *)usbhs_driver_name,
1032 .owner = THIS_MODULE,
1033 },
1034 .remove = __exit_p(usbhs_omap_remove),
1035 };
1036
1037 MODULE_AUTHOR("Keshava Munegowda <keshava_mgowda@ti.com>");
1038 MODULE_ALIAS("platform:" USBHS_DRIVER_NAME);
1039 MODULE_LICENSE("GPL v2");
1040 MODULE_DESCRIPTION("usb host common core driver for omap EHCI and OHCI");
1041
1042 static int __init omap_usbhs_drvinit(void)
1043 {
1044 return platform_driver_probe(&usbhs_omap_driver, usbhs_omap_probe);
1045 }
1046
1047 /*
1048 * init before ehci and ohci drivers;
1049 * The usbhs core driver should be initialized much before
1050 * the omap ehci and ohci probe functions are called.
1051 */
1052 fs_initcall(omap_usbhs_drvinit);
1053
1054 static void __exit omap_usbhs_drvexit(void)
1055 {
1056 platform_driver_unregister(&usbhs_omap_driver);
1057 }
1058 module_exit(omap_usbhs_drvexit);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree