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