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53f3a9e2 DV |
1 | /* |
2 | * USB SD Host Controller (USHC) controller driver. | |
3 | * | |
4 | * Copyright (C) 2010 Cambridge Silicon Radio Ltd. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or (at | |
9 | * your option) any later version. | |
10 | * | |
11 | * Notes: | |
12 | * - Only version 2 devices are supported. | |
13 | * - Version 2 devices only support SDIO cards/devices (R2 response is | |
14 | * unsupported). | |
15 | * | |
16 | * References: | |
17 | * [USHC] USB SD Host Controller specification (CS-118793-SP) | |
18 | */ | |
19 | #include <linux/module.h> | |
20 | #include <linux/usb.h> | |
21 | #include <linux/kernel.h> | |
53f3a9e2 DV |
22 | #include <linux/slab.h> |
23 | #include <linux/dma-mapping.h> | |
24 | #include <linux/mmc/host.h> | |
25 | ||
26 | enum ushc_request { | |
27 | USHC_GET_CAPS = 0x00, | |
28 | USHC_HOST_CTRL = 0x01, | |
29 | USHC_PWR_CTRL = 0x02, | |
30 | USHC_CLK_FREQ = 0x03, | |
31 | USHC_EXEC_CMD = 0x04, | |
32 | USHC_READ_RESP = 0x05, | |
33 | USHC_RESET = 0x06, | |
34 | }; | |
35 | ||
36 | enum ushc_request_type { | |
37 | USHC_GET_CAPS_TYPE = USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
38 | USHC_HOST_CTRL_TYPE = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
39 | USHC_PWR_CTRL_TYPE = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
40 | USHC_CLK_FREQ_TYPE = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
41 | USHC_EXEC_CMD_TYPE = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
42 | USHC_READ_RESP_TYPE = USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
43 | USHC_RESET_TYPE = USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, | |
44 | }; | |
45 | ||
46 | #define USHC_GET_CAPS_VERSION_MASK 0xff | |
47 | #define USHC_GET_CAPS_3V3 (1 << 8) | |
48 | #define USHC_GET_CAPS_3V0 (1 << 9) | |
49 | #define USHC_GET_CAPS_1V8 (1 << 10) | |
50 | #define USHC_GET_CAPS_HIGH_SPD (1 << 16) | |
51 | ||
52 | #define USHC_HOST_CTRL_4BIT (1 << 1) | |
53 | #define USHC_HOST_CTRL_HIGH_SPD (1 << 0) | |
54 | ||
55 | #define USHC_PWR_CTRL_OFF 0x00 | |
56 | #define USHC_PWR_CTRL_3V3 0x01 | |
57 | #define USHC_PWR_CTRL_3V0 0x02 | |
58 | #define USHC_PWR_CTRL_1V8 0x03 | |
59 | ||
60 | #define USHC_READ_RESP_BUSY (1 << 4) | |
61 | #define USHC_READ_RESP_ERR_TIMEOUT (1 << 3) | |
62 | #define USHC_READ_RESP_ERR_CRC (1 << 2) | |
63 | #define USHC_READ_RESP_ERR_DAT (1 << 1) | |
64 | #define USHC_READ_RESP_ERR_CMD (1 << 0) | |
65 | #define USHC_READ_RESP_ERR_MASK 0x0f | |
66 | ||
67 | struct ushc_cbw { | |
68 | __u8 signature; | |
69 | __u8 cmd_idx; | |
70 | __le16 block_size; | |
71 | __le32 arg; | |
72 | } __attribute__((packed)); | |
73 | ||
74 | #define USHC_CBW_SIGNATURE 'C' | |
75 | ||
76 | struct ushc_csw { | |
77 | __u8 signature; | |
78 | __u8 status; | |
79 | __le32 response; | |
80 | } __attribute__((packed)); | |
81 | ||
82 | #define USHC_CSW_SIGNATURE 'S' | |
83 | ||
84 | struct ushc_int_data { | |
85 | u8 status; | |
86 | u8 reserved[3]; | |
87 | }; | |
88 | ||
89 | #define USHC_INT_STATUS_SDIO_INT (1 << 1) | |
90 | #define USHC_INT_STATUS_CARD_PRESENT (1 << 0) | |
91 | ||
92 | ||
93 | struct ushc_data { | |
94 | struct usb_device *usb_dev; | |
95 | struct mmc_host *mmc; | |
96 | ||
97 | struct urb *int_urb; | |
98 | struct ushc_int_data *int_data; | |
99 | ||
100 | struct urb *cbw_urb; | |
101 | struct ushc_cbw *cbw; | |
102 | ||
103 | struct urb *data_urb; | |
104 | ||
105 | struct urb *csw_urb; | |
106 | struct ushc_csw *csw; | |
107 | ||
108 | spinlock_t lock; | |
109 | struct mmc_request *current_req; | |
110 | u32 caps; | |
111 | u16 host_ctrl; | |
112 | unsigned long flags; | |
113 | u8 last_status; | |
114 | int clock_freq; | |
115 | }; | |
116 | ||
117 | #define DISCONNECTED 0 | |
118 | #define INT_EN 1 | |
119 | #define IGNORE_NEXT_INT 2 | |
120 | ||
121 | static void data_callback(struct urb *urb); | |
122 | ||
123 | static int ushc_hw_reset(struct ushc_data *ushc) | |
124 | { | |
125 | return usb_control_msg(ushc->usb_dev, usb_sndctrlpipe(ushc->usb_dev, 0), | |
126 | USHC_RESET, USHC_RESET_TYPE, | |
127 | 0, 0, NULL, 0, 100); | |
128 | } | |
129 | ||
130 | static int ushc_hw_get_caps(struct ushc_data *ushc) | |
131 | { | |
132 | int ret; | |
133 | int version; | |
134 | ||
135 | ret = usb_control_msg(ushc->usb_dev, usb_rcvctrlpipe(ushc->usb_dev, 0), | |
136 | USHC_GET_CAPS, USHC_GET_CAPS_TYPE, | |
137 | 0, 0, &ushc->caps, sizeof(ushc->caps), 100); | |
138 | if (ret < 0) | |
139 | return ret; | |
140 | ||
141 | ushc->caps = le32_to_cpu(ushc->caps); | |
142 | ||
143 | version = ushc->caps & USHC_GET_CAPS_VERSION_MASK; | |
144 | if (version != 0x02) { | |
145 | dev_err(&ushc->usb_dev->dev, "controller version %d is not supported\n", version); | |
146 | return -EINVAL; | |
147 | } | |
148 | ||
149 | return 0; | |
150 | } | |
151 | ||
152 | static int ushc_hw_set_host_ctrl(struct ushc_data *ushc, u16 mask, u16 val) | |
153 | { | |
154 | u16 host_ctrl; | |
155 | int ret; | |
156 | ||
157 | host_ctrl = (ushc->host_ctrl & ~mask) | val; | |
158 | ret = usb_control_msg(ushc->usb_dev, usb_sndctrlpipe(ushc->usb_dev, 0), | |
159 | USHC_HOST_CTRL, USHC_HOST_CTRL_TYPE, | |
160 | host_ctrl, 0, NULL, 0, 100); | |
161 | if (ret < 0) | |
162 | return ret; | |
163 | ushc->host_ctrl = host_ctrl; | |
164 | return 0; | |
165 | } | |
166 | ||
167 | static void int_callback(struct urb *urb) | |
168 | { | |
169 | struct ushc_data *ushc = urb->context; | |
170 | u8 status, last_status; | |
171 | ||
172 | if (urb->status < 0) | |
173 | return; | |
174 | ||
175 | status = ushc->int_data->status; | |
176 | last_status = ushc->last_status; | |
177 | ushc->last_status = status; | |
178 | ||
179 | /* | |
180 | * Ignore the card interrupt status on interrupt transfers that | |
181 | * were submitted while card interrupts where disabled. | |
182 | * | |
183 | * This avoid occasional spurious interrupts when enabling | |
184 | * interrupts immediately after clearing the source on the card. | |
185 | */ | |
186 | ||
187 | if (!test_and_clear_bit(IGNORE_NEXT_INT, &ushc->flags) | |
188 | && test_bit(INT_EN, &ushc->flags) | |
189 | && status & USHC_INT_STATUS_SDIO_INT) { | |
190 | mmc_signal_sdio_irq(ushc->mmc); | |
191 | } | |
192 | ||
193 | if ((status ^ last_status) & USHC_INT_STATUS_CARD_PRESENT) | |
194 | mmc_detect_change(ushc->mmc, msecs_to_jiffies(100)); | |
195 | ||
196 | if (!test_bit(INT_EN, &ushc->flags)) | |
197 | set_bit(IGNORE_NEXT_INT, &ushc->flags); | |
198 | usb_submit_urb(ushc->int_urb, GFP_ATOMIC); | |
199 | } | |
200 | ||
201 | static void cbw_callback(struct urb *urb) | |
202 | { | |
203 | struct ushc_data *ushc = urb->context; | |
204 | ||
205 | if (urb->status != 0) { | |
206 | usb_unlink_urb(ushc->data_urb); | |
207 | usb_unlink_urb(ushc->csw_urb); | |
208 | } | |
209 | } | |
210 | ||
211 | static void data_callback(struct urb *urb) | |
212 | { | |
213 | struct ushc_data *ushc = urb->context; | |
214 | ||
215 | if (urb->status != 0) | |
216 | usb_unlink_urb(ushc->csw_urb); | |
217 | } | |
218 | ||
219 | static void csw_callback(struct urb *urb) | |
220 | { | |
221 | struct ushc_data *ushc = urb->context; | |
222 | struct mmc_request *req = ushc->current_req; | |
223 | int status; | |
224 | ||
225 | status = ushc->csw->status; | |
226 | ||
227 | if (urb->status != 0) { | |
228 | req->cmd->error = urb->status; | |
229 | } else if (status & USHC_READ_RESP_ERR_CMD) { | |
230 | if (status & USHC_READ_RESP_ERR_CRC) | |
231 | req->cmd->error = -EIO; | |
232 | else | |
233 | req->cmd->error = -ETIMEDOUT; | |
234 | } | |
235 | if (req->data) { | |
236 | if (status & USHC_READ_RESP_ERR_DAT) { | |
237 | if (status & USHC_READ_RESP_ERR_CRC) | |
238 | req->data->error = -EIO; | |
239 | else | |
240 | req->data->error = -ETIMEDOUT; | |
241 | req->data->bytes_xfered = 0; | |
242 | } else { | |
243 | req->data->bytes_xfered = req->data->blksz * req->data->blocks; | |
244 | } | |
245 | } | |
246 | ||
247 | req->cmd->resp[0] = le32_to_cpu(ushc->csw->response); | |
248 | ||
249 | mmc_request_done(ushc->mmc, req); | |
250 | } | |
251 | ||
252 | static void ushc_request(struct mmc_host *mmc, struct mmc_request *req) | |
253 | { | |
254 | struct ushc_data *ushc = mmc_priv(mmc); | |
255 | int ret; | |
256 | unsigned long flags; | |
257 | ||
258 | spin_lock_irqsave(&ushc->lock, flags); | |
259 | ||
260 | if (test_bit(DISCONNECTED, &ushc->flags)) { | |
261 | ret = -ENODEV; | |
262 | goto out; | |
263 | } | |
264 | ||
265 | /* Version 2 firmware doesn't support the R2 response format. */ | |
266 | if (req->cmd->flags & MMC_RSP_136) { | |
267 | ret = -EINVAL; | |
268 | goto out; | |
269 | } | |
270 | ||
271 | /* The Astoria's data FIFOs don't work with clock speeds < 5MHz so | |
272 | limit commands with data to 6MHz or more. */ | |
273 | if (req->data && ushc->clock_freq < 6000000) { | |
274 | ret = -EINVAL; | |
275 | goto out; | |
276 | } | |
277 | ||
278 | ushc->current_req = req; | |
279 | ||
280 | /* Start cmd with CBW. */ | |
281 | ushc->cbw->cmd_idx = cpu_to_le16(req->cmd->opcode); | |
282 | if (req->data) | |
283 | ushc->cbw->block_size = cpu_to_le16(req->data->blksz); | |
284 | else | |
285 | ushc->cbw->block_size = 0; | |
286 | ushc->cbw->arg = cpu_to_le32(req->cmd->arg); | |
287 | ||
288 | ret = usb_submit_urb(ushc->cbw_urb, GFP_ATOMIC); | |
289 | if (ret < 0) | |
290 | goto out; | |
291 | ||
292 | /* Submit data (if any). */ | |
293 | if (req->data) { | |
294 | struct mmc_data *data = req->data; | |
295 | int pipe; | |
296 | ||
297 | if (data->flags & MMC_DATA_READ) | |
298 | pipe = usb_rcvbulkpipe(ushc->usb_dev, 6); | |
299 | else | |
300 | pipe = usb_sndbulkpipe(ushc->usb_dev, 2); | |
301 | ||
302 | usb_fill_bulk_urb(ushc->data_urb, ushc->usb_dev, pipe, | |
a4034173 | 303 | NULL, data->sg->length, |
53f3a9e2 | 304 | data_callback, ushc); |
a4034173 CH |
305 | ushc->data_urb->num_sgs = 1; |
306 | ushc->data_urb->sg = data->sg; | |
53f3a9e2 DV |
307 | ret = usb_submit_urb(ushc->data_urb, GFP_ATOMIC); |
308 | if (ret < 0) | |
309 | goto out; | |
310 | } | |
311 | ||
312 | /* Submit CSW. */ | |
313 | ret = usb_submit_urb(ushc->csw_urb, GFP_ATOMIC); | |
53f3a9e2 DV |
314 | |
315 | out: | |
316 | spin_unlock_irqrestore(&ushc->lock, flags); | |
317 | if (ret < 0) { | |
318 | usb_unlink_urb(ushc->cbw_urb); | |
319 | usb_unlink_urb(ushc->data_urb); | |
320 | req->cmd->error = ret; | |
321 | mmc_request_done(mmc, req); | |
322 | } | |
323 | } | |
324 | ||
325 | static int ushc_set_power(struct ushc_data *ushc, unsigned char power_mode) | |
326 | { | |
327 | u16 voltage; | |
328 | ||
329 | switch (power_mode) { | |
330 | case MMC_POWER_OFF: | |
331 | voltage = USHC_PWR_CTRL_OFF; | |
332 | break; | |
333 | case MMC_POWER_UP: | |
334 | case MMC_POWER_ON: | |
335 | voltage = USHC_PWR_CTRL_3V3; | |
336 | break; | |
337 | default: | |
338 | return -EINVAL; | |
339 | } | |
340 | ||
341 | return usb_control_msg(ushc->usb_dev, usb_sndctrlpipe(ushc->usb_dev, 0), | |
342 | USHC_PWR_CTRL, USHC_PWR_CTRL_TYPE, | |
343 | voltage, 0, NULL, 0, 100); | |
344 | } | |
345 | ||
346 | static int ushc_set_bus_width(struct ushc_data *ushc, int bus_width) | |
347 | { | |
348 | return ushc_hw_set_host_ctrl(ushc, USHC_HOST_CTRL_4BIT, | |
349 | bus_width == 4 ? USHC_HOST_CTRL_4BIT : 0); | |
350 | } | |
351 | ||
352 | static int ushc_set_bus_freq(struct ushc_data *ushc, int clk, bool enable_hs) | |
353 | { | |
354 | int ret; | |
355 | ||
356 | /* Hardware can't detect interrupts while the clock is off. */ | |
357 | if (clk == 0) | |
358 | clk = 400000; | |
359 | ||
360 | ret = ushc_hw_set_host_ctrl(ushc, USHC_HOST_CTRL_HIGH_SPD, | |
361 | enable_hs ? USHC_HOST_CTRL_HIGH_SPD : 0); | |
362 | if (ret < 0) | |
363 | return ret; | |
364 | ||
365 | ret = usb_control_msg(ushc->usb_dev, usb_sndctrlpipe(ushc->usb_dev, 0), | |
366 | USHC_CLK_FREQ, USHC_CLK_FREQ_TYPE, | |
367 | clk & 0xffff, (clk >> 16) & 0xffff, NULL, 0, 100); | |
368 | if (ret < 0) | |
369 | return ret; | |
370 | ||
371 | ushc->clock_freq = clk; | |
372 | return 0; | |
373 | } | |
374 | ||
375 | static void ushc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) | |
376 | { | |
377 | struct ushc_data *ushc = mmc_priv(mmc); | |
378 | ||
379 | ushc_set_power(ushc, ios->power_mode); | |
380 | ushc_set_bus_width(ushc, 1 << ios->bus_width); | |
381 | ushc_set_bus_freq(ushc, ios->clock, ios->timing == MMC_TIMING_SD_HS); | |
382 | } | |
383 | ||
384 | static int ushc_get_cd(struct mmc_host *mmc) | |
385 | { | |
386 | struct ushc_data *ushc = mmc_priv(mmc); | |
387 | ||
388 | return !!(ushc->last_status & USHC_INT_STATUS_CARD_PRESENT); | |
389 | } | |
390 | ||
391 | static void ushc_enable_sdio_irq(struct mmc_host *mmc, int enable) | |
392 | { | |
393 | struct ushc_data *ushc = mmc_priv(mmc); | |
394 | ||
395 | if (enable) | |
396 | set_bit(INT_EN, &ushc->flags); | |
397 | else | |
398 | clear_bit(INT_EN, &ushc->flags); | |
399 | } | |
400 | ||
401 | static void ushc_clean_up(struct ushc_data *ushc) | |
402 | { | |
403 | usb_free_urb(ushc->int_urb); | |
404 | usb_free_urb(ushc->csw_urb); | |
405 | usb_free_urb(ushc->data_urb); | |
406 | usb_free_urb(ushc->cbw_urb); | |
407 | ||
408 | kfree(ushc->int_data); | |
409 | kfree(ushc->cbw); | |
410 | kfree(ushc->csw); | |
411 | ||
412 | mmc_free_host(ushc->mmc); | |
413 | } | |
414 | ||
415 | static const struct mmc_host_ops ushc_ops = { | |
416 | .request = ushc_request, | |
417 | .set_ios = ushc_set_ios, | |
418 | .get_cd = ushc_get_cd, | |
419 | .enable_sdio_irq = ushc_enable_sdio_irq, | |
420 | }; | |
421 | ||
422 | static int ushc_probe(struct usb_interface *intf, const struct usb_device_id *id) | |
423 | { | |
424 | struct usb_device *usb_dev = interface_to_usbdev(intf); | |
425 | struct mmc_host *mmc; | |
426 | struct ushc_data *ushc; | |
14d4031d | 427 | int ret; |
53f3a9e2 | 428 | |
181302dc JH |
429 | if (intf->cur_altsetting->desc.bNumEndpoints < 1) |
430 | return -ENODEV; | |
431 | ||
53f3a9e2 DV |
432 | mmc = mmc_alloc_host(sizeof(struct ushc_data), &intf->dev); |
433 | if (mmc == NULL) | |
434 | return -ENOMEM; | |
435 | ushc = mmc_priv(mmc); | |
436 | usb_set_intfdata(intf, ushc); | |
437 | ||
438 | ushc->usb_dev = usb_dev; | |
439 | ushc->mmc = mmc; | |
440 | ||
441 | spin_lock_init(&ushc->lock); | |
442 | ||
443 | ret = ushc_hw_reset(ushc); | |
444 | if (ret < 0) | |
445 | goto err; | |
446 | ||
447 | /* Read capabilities. */ | |
448 | ret = ushc_hw_get_caps(ushc); | |
449 | if (ret < 0) | |
450 | goto err; | |
451 | ||
452 | mmc->ops = &ushc_ops; | |
453 | ||
454 | mmc->f_min = 400000; | |
455 | mmc->f_max = 50000000; | |
456 | mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34; | |
457 | mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SDIO_IRQ; | |
458 | mmc->caps |= (ushc->caps & USHC_GET_CAPS_HIGH_SPD) ? MMC_CAP_SD_HIGHSPEED : 0; | |
459 | ||
460 | mmc->max_seg_size = 512*511; | |
461 | mmc->max_segs = 1; | |
462 | mmc->max_req_size = 512*511; | |
463 | mmc->max_blk_size = 512; | |
464 | mmc->max_blk_count = 511; | |
465 | ||
466 | ushc->int_urb = usb_alloc_urb(0, GFP_KERNEL); | |
14d4031d AL |
467 | if (ushc->int_urb == NULL) { |
468 | ret = -ENOMEM; | |
53f3a9e2 | 469 | goto err; |
14d4031d | 470 | } |
53f3a9e2 | 471 | ushc->int_data = kzalloc(sizeof(struct ushc_int_data), GFP_KERNEL); |
14d4031d AL |
472 | if (ushc->int_data == NULL) { |
473 | ret = -ENOMEM; | |
53f3a9e2 | 474 | goto err; |
14d4031d | 475 | } |
53f3a9e2 DV |
476 | usb_fill_int_urb(ushc->int_urb, ushc->usb_dev, |
477 | usb_rcvintpipe(usb_dev, | |
478 | intf->cur_altsetting->endpoint[0].desc.bEndpointAddress), | |
479 | ushc->int_data, sizeof(struct ushc_int_data), | |
480 | int_callback, ushc, | |
481 | intf->cur_altsetting->endpoint[0].desc.bInterval); | |
482 | ||
483 | ushc->cbw_urb = usb_alloc_urb(0, GFP_KERNEL); | |
14d4031d AL |
484 | if (ushc->cbw_urb == NULL) { |
485 | ret = -ENOMEM; | |
53f3a9e2 | 486 | goto err; |
14d4031d | 487 | } |
53f3a9e2 | 488 | ushc->cbw = kzalloc(sizeof(struct ushc_cbw), GFP_KERNEL); |
14d4031d AL |
489 | if (ushc->cbw == NULL) { |
490 | ret = -ENOMEM; | |
53f3a9e2 | 491 | goto err; |
14d4031d | 492 | } |
53f3a9e2 DV |
493 | ushc->cbw->signature = USHC_CBW_SIGNATURE; |
494 | ||
495 | usb_fill_bulk_urb(ushc->cbw_urb, ushc->usb_dev, usb_sndbulkpipe(usb_dev, 2), | |
496 | ushc->cbw, sizeof(struct ushc_cbw), | |
497 | cbw_callback, ushc); | |
498 | ||
499 | ushc->data_urb = usb_alloc_urb(0, GFP_KERNEL); | |
14d4031d AL |
500 | if (ushc->data_urb == NULL) { |
501 | ret = -ENOMEM; | |
53f3a9e2 | 502 | goto err; |
14d4031d | 503 | } |
53f3a9e2 DV |
504 | |
505 | ushc->csw_urb = usb_alloc_urb(0, GFP_KERNEL); | |
14d4031d AL |
506 | if (ushc->csw_urb == NULL) { |
507 | ret = -ENOMEM; | |
53f3a9e2 | 508 | goto err; |
14d4031d | 509 | } |
c4c7fb19 | 510 | ushc->csw = kzalloc(sizeof(struct ushc_csw), GFP_KERNEL); |
14d4031d AL |
511 | if (ushc->csw == NULL) { |
512 | ret = -ENOMEM; | |
53f3a9e2 | 513 | goto err; |
14d4031d | 514 | } |
53f3a9e2 DV |
515 | usb_fill_bulk_urb(ushc->csw_urb, ushc->usb_dev, usb_rcvbulkpipe(usb_dev, 6), |
516 | ushc->csw, sizeof(struct ushc_csw), | |
517 | csw_callback, ushc); | |
518 | ||
519 | ret = mmc_add_host(ushc->mmc); | |
520 | if (ret) | |
521 | goto err; | |
522 | ||
523 | ret = usb_submit_urb(ushc->int_urb, GFP_KERNEL); | |
524 | if (ret < 0) { | |
525 | mmc_remove_host(ushc->mmc); | |
526 | goto err; | |
527 | } | |
528 | ||
529 | return 0; | |
530 | ||
531 | err: | |
532 | ushc_clean_up(ushc); | |
533 | return ret; | |
534 | } | |
535 | ||
536 | static void ushc_disconnect(struct usb_interface *intf) | |
537 | { | |
538 | struct ushc_data *ushc = usb_get_intfdata(intf); | |
539 | ||
540 | spin_lock_irq(&ushc->lock); | |
541 | set_bit(DISCONNECTED, &ushc->flags); | |
542 | spin_unlock_irq(&ushc->lock); | |
543 | ||
544 | usb_kill_urb(ushc->int_urb); | |
545 | usb_kill_urb(ushc->cbw_urb); | |
546 | usb_kill_urb(ushc->data_urb); | |
547 | usb_kill_urb(ushc->csw_urb); | |
548 | ||
549 | mmc_remove_host(ushc->mmc); | |
550 | ||
551 | ushc_clean_up(ushc); | |
552 | } | |
553 | ||
554 | static struct usb_device_id ushc_id_table[] = { | |
555 | /* CSR USB SD Host Controller */ | |
556 | { USB_DEVICE(0x0a12, 0x5d10) }, | |
557 | { }, | |
558 | }; | |
559 | MODULE_DEVICE_TABLE(usb, ushc_id_table); | |
560 | ||
561 | static struct usb_driver ushc_driver = { | |
562 | .name = "ushc", | |
563 | .id_table = ushc_id_table, | |
564 | .probe = ushc_probe, | |
565 | .disconnect = ushc_disconnect, | |
566 | }; | |
567 | ||
fe748483 | 568 | module_usb_driver(ushc_driver); |
53f3a9e2 DV |
569 | |
570 | MODULE_DESCRIPTION("USB SD Host Controller driver"); | |
571 | MODULE_AUTHOR("David Vrabel <david.vrabel@csr.com>"); | |
572 | MODULE_LICENSE("GPL"); |