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b902dd4e WW |
1 | /* Realtek PCI-Express Memstick Card Interface driver |
2 | * | |
62282180 | 3 | * Copyright(c) 2009-2013 Realtek Semiconductor Corp. All rights reserved. |
b902dd4e WW |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms of the GNU General Public License as published by the | |
7 | * Free Software Foundation; either version 2, or (at your option) any | |
8 | * later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License along | |
16 | * with this program; if not, see <http://www.gnu.org/licenses/>. | |
17 | * | |
18 | * Author: | |
19 | * Wei WANG <wei_wang@realsil.com.cn> | |
b902dd4e WW |
20 | */ |
21 | ||
22 | #include <linux/module.h> | |
23 | #include <linux/highmem.h> | |
24 | #include <linux/delay.h> | |
25 | #include <linux/platform_device.h> | |
26 | #include <linux/memstick.h> | |
27 | #include <linux/mfd/rtsx_pci.h> | |
28 | #include <asm/unaligned.h> | |
29 | ||
30 | struct realtek_pci_ms { | |
31 | struct platform_device *pdev; | |
32 | struct rtsx_pcr *pcr; | |
33 | struct memstick_host *msh; | |
34 | struct memstick_request *req; | |
35 | ||
36 | struct mutex host_mutex; | |
37 | struct work_struct handle_req; | |
38 | ||
39 | u8 ssc_depth; | |
40 | unsigned int clock; | |
41 | unsigned char ifmode; | |
42 | bool eject; | |
43 | }; | |
44 | ||
45 | static inline struct device *ms_dev(struct realtek_pci_ms *host) | |
46 | { | |
47 | return &(host->pdev->dev); | |
48 | } | |
49 | ||
50 | static inline void ms_clear_error(struct realtek_pci_ms *host) | |
51 | { | |
52 | rtsx_pci_write_register(host->pcr, CARD_STOP, | |
53 | MS_STOP | MS_CLR_ERR, MS_STOP | MS_CLR_ERR); | |
54 | } | |
55 | ||
56 | #ifdef DEBUG | |
57 | ||
58 | static void ms_print_debug_regs(struct realtek_pci_ms *host) | |
59 | { | |
60 | struct rtsx_pcr *pcr = host->pcr; | |
61 | u16 i; | |
62 | u8 *ptr; | |
63 | ||
64 | /* Print MS host internal registers */ | |
65 | rtsx_pci_init_cmd(pcr); | |
66 | for (i = 0xFD40; i <= 0xFD44; i++) | |
67 | rtsx_pci_add_cmd(pcr, READ_REG_CMD, i, 0, 0); | |
68 | for (i = 0xFD52; i <= 0xFD69; i++) | |
69 | rtsx_pci_add_cmd(pcr, READ_REG_CMD, i, 0, 0); | |
70 | rtsx_pci_send_cmd(pcr, 100); | |
71 | ||
72 | ptr = rtsx_pci_get_cmd_data(pcr); | |
73 | for (i = 0xFD40; i <= 0xFD44; i++) | |
74 | dev_dbg(ms_dev(host), "0x%04X: 0x%02x\n", i, *(ptr++)); | |
75 | for (i = 0xFD52; i <= 0xFD69; i++) | |
76 | dev_dbg(ms_dev(host), "0x%04X: 0x%02x\n", i, *(ptr++)); | |
77 | } | |
78 | ||
79 | #else | |
80 | ||
81 | #define ms_print_debug_regs(host) | |
82 | ||
83 | #endif | |
84 | ||
85 | static int ms_power_on(struct realtek_pci_ms *host) | |
86 | { | |
87 | struct rtsx_pcr *pcr = host->pcr; | |
88 | int err; | |
89 | ||
90 | rtsx_pci_init_cmd(pcr); | |
91 | rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_SELECT, 0x07, MS_MOD_SEL); | |
92 | rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_SHARE_MODE, | |
93 | CARD_SHARE_MASK, CARD_SHARE_48_MS); | |
94 | rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_CLK_EN, | |
95 | MS_CLK_EN, MS_CLK_EN); | |
96 | err = rtsx_pci_send_cmd(pcr, 100); | |
97 | if (err < 0) | |
98 | return err; | |
99 | ||
100 | err = rtsx_pci_card_pull_ctl_enable(pcr, RTSX_MS_CARD); | |
101 | if (err < 0) | |
102 | return err; | |
103 | ||
104 | err = rtsx_pci_card_power_on(pcr, RTSX_MS_CARD); | |
105 | if (err < 0) | |
106 | return err; | |
107 | ||
108 | /* Wait ms power stable */ | |
109 | msleep(150); | |
110 | ||
111 | err = rtsx_pci_write_register(pcr, CARD_OE, | |
112 | MS_OUTPUT_EN, MS_OUTPUT_EN); | |
113 | if (err < 0) | |
114 | return err; | |
115 | ||
116 | return 0; | |
117 | } | |
118 | ||
119 | static int ms_power_off(struct realtek_pci_ms *host) | |
120 | { | |
121 | struct rtsx_pcr *pcr = host->pcr; | |
122 | int err; | |
123 | ||
124 | rtsx_pci_init_cmd(pcr); | |
125 | ||
126 | rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_CLK_EN, MS_CLK_EN, 0); | |
127 | rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_OE, MS_OUTPUT_EN, 0); | |
128 | ||
129 | err = rtsx_pci_send_cmd(pcr, 100); | |
130 | if (err < 0) | |
131 | return err; | |
132 | ||
133 | err = rtsx_pci_card_power_off(pcr, RTSX_MS_CARD); | |
134 | if (err < 0) | |
135 | return err; | |
136 | ||
137 | return rtsx_pci_card_pull_ctl_disable(pcr, RTSX_MS_CARD); | |
138 | } | |
139 | ||
140 | static int ms_transfer_data(struct realtek_pci_ms *host, unsigned char data_dir, | |
141 | u8 tpc, u8 cfg, struct scatterlist *sg) | |
142 | { | |
143 | struct rtsx_pcr *pcr = host->pcr; | |
144 | int err; | |
145 | unsigned int length = sg->length; | |
146 | u16 sec_cnt = (u16)(length / 512); | |
147 | u8 val, trans_mode, dma_dir; | |
148 | ||
149 | dev_dbg(ms_dev(host), "%s: tpc = 0x%02x, data_dir = %s, length = %d\n", | |
150 | __func__, tpc, (data_dir == READ) ? "READ" : "WRITE", | |
151 | length); | |
152 | ||
153 | if (data_dir == READ) { | |
154 | dma_dir = DMA_DIR_FROM_CARD; | |
155 | trans_mode = MS_TM_AUTO_READ; | |
156 | } else { | |
157 | dma_dir = DMA_DIR_TO_CARD; | |
158 | trans_mode = MS_TM_AUTO_WRITE; | |
159 | } | |
160 | ||
161 | rtsx_pci_init_cmd(pcr); | |
162 | ||
163 | rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TPC, 0xFF, tpc); | |
164 | rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_SECTOR_CNT_H, | |
165 | 0xFF, (u8)(sec_cnt >> 8)); | |
166 | rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_SECTOR_CNT_L, | |
167 | 0xFF, (u8)sec_cnt); | |
168 | rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TRANS_CFG, 0xFF, cfg); | |
169 | ||
170 | rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, IRQSTAT0, | |
171 | DMA_DONE_INT, DMA_DONE_INT); | |
172 | rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMATC3, 0xFF, (u8)(length >> 24)); | |
173 | rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMATC2, 0xFF, (u8)(length >> 16)); | |
174 | rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMATC1, 0xFF, (u8)(length >> 8)); | |
175 | rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMATC0, 0xFF, (u8)length); | |
176 | rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, DMACTL, | |
177 | 0x03 | DMA_PACK_SIZE_MASK, dma_dir | DMA_EN | DMA_512); | |
178 | rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_DATA_SOURCE, | |
179 | 0x01, RING_BUFFER); | |
180 | ||
181 | rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TRANSFER, | |
182 | 0xFF, MS_TRANSFER_START | trans_mode); | |
183 | rtsx_pci_add_cmd(pcr, CHECK_REG_CMD, MS_TRANSFER, | |
184 | MS_TRANSFER_END, MS_TRANSFER_END); | |
185 | ||
186 | rtsx_pci_send_cmd_no_wait(pcr); | |
187 | ||
188 | err = rtsx_pci_transfer_data(pcr, sg, 1, data_dir == READ, 10000); | |
189 | if (err < 0) { | |
190 | ms_clear_error(host); | |
191 | return err; | |
192 | } | |
193 | ||
194 | rtsx_pci_read_register(pcr, MS_TRANS_CFG, &val); | |
195 | if (val & (MS_INT_CMDNK | MS_INT_ERR | MS_CRC16_ERR | MS_RDY_TIMEOUT)) | |
196 | return -EIO; | |
197 | ||
198 | return 0; | |
199 | } | |
200 | ||
201 | static int ms_write_bytes(struct realtek_pci_ms *host, u8 tpc, | |
202 | u8 cfg, u8 cnt, u8 *data, u8 *int_reg) | |
203 | { | |
204 | struct rtsx_pcr *pcr = host->pcr; | |
205 | int err, i; | |
206 | ||
207 | dev_dbg(ms_dev(host), "%s: tpc = 0x%02x\n", __func__, tpc); | |
208 | ||
209 | if (!data) | |
210 | return -EINVAL; | |
211 | ||
212 | rtsx_pci_init_cmd(pcr); | |
213 | ||
214 | for (i = 0; i < cnt; i++) | |
215 | rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, | |
216 | PPBUF_BASE2 + i, 0xFF, data[i]); | |
217 | if (cnt % 2) | |
218 | rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, | |
219 | PPBUF_BASE2 + i, 0xFF, 0xFF); | |
220 | ||
221 | rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TPC, 0xFF, tpc); | |
222 | rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_BYTE_CNT, 0xFF, cnt); | |
223 | rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TRANS_CFG, 0xFF, cfg); | |
224 | rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_DATA_SOURCE, | |
225 | 0x01, PINGPONG_BUFFER); | |
226 | ||
227 | rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TRANSFER, | |
228 | 0xFF, MS_TRANSFER_START | MS_TM_WRITE_BYTES); | |
229 | rtsx_pci_add_cmd(pcr, CHECK_REG_CMD, MS_TRANSFER, | |
230 | MS_TRANSFER_END, MS_TRANSFER_END); | |
231 | if (int_reg) | |
232 | rtsx_pci_add_cmd(pcr, READ_REG_CMD, MS_TRANS_CFG, 0, 0); | |
233 | ||
234 | err = rtsx_pci_send_cmd(pcr, 5000); | |
235 | if (err < 0) { | |
236 | u8 val; | |
237 | ||
238 | rtsx_pci_read_register(pcr, MS_TRANS_CFG, &val); | |
239 | dev_dbg(ms_dev(host), "MS_TRANS_CFG: 0x%02x\n", val); | |
240 | ||
241 | if (int_reg) | |
242 | *int_reg = val & 0x0F; | |
243 | ||
244 | ms_print_debug_regs(host); | |
245 | ||
246 | ms_clear_error(host); | |
247 | ||
248 | if (!(tpc & 0x08)) { | |
249 | if (val & MS_CRC16_ERR) | |
250 | return -EIO; | |
251 | } else { | |
252 | if (!(val & 0x80)) { | |
253 | if (val & (MS_INT_ERR | MS_INT_CMDNK)) | |
254 | return -EIO; | |
255 | } | |
256 | } | |
257 | ||
258 | return -ETIMEDOUT; | |
259 | } | |
260 | ||
261 | if (int_reg) { | |
262 | u8 *ptr = rtsx_pci_get_cmd_data(pcr) + 1; | |
263 | *int_reg = *ptr & 0x0F; | |
264 | } | |
265 | ||
266 | return 0; | |
267 | } | |
268 | ||
269 | static int ms_read_bytes(struct realtek_pci_ms *host, u8 tpc, | |
270 | u8 cfg, u8 cnt, u8 *data, u8 *int_reg) | |
271 | { | |
272 | struct rtsx_pcr *pcr = host->pcr; | |
273 | int err, i; | |
274 | u8 *ptr; | |
275 | ||
276 | dev_dbg(ms_dev(host), "%s: tpc = 0x%02x\n", __func__, tpc); | |
277 | ||
278 | if (!data) | |
279 | return -EINVAL; | |
280 | ||
281 | rtsx_pci_init_cmd(pcr); | |
282 | ||
283 | rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TPC, 0xFF, tpc); | |
284 | rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_BYTE_CNT, 0xFF, cnt); | |
285 | rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TRANS_CFG, 0xFF, cfg); | |
286 | rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, CARD_DATA_SOURCE, | |
287 | 0x01, PINGPONG_BUFFER); | |
288 | ||
289 | rtsx_pci_add_cmd(pcr, WRITE_REG_CMD, MS_TRANSFER, | |
290 | 0xFF, MS_TRANSFER_START | MS_TM_READ_BYTES); | |
291 | rtsx_pci_add_cmd(pcr, CHECK_REG_CMD, MS_TRANSFER, | |
292 | MS_TRANSFER_END, MS_TRANSFER_END); | |
293 | for (i = 0; i < cnt - 1; i++) | |
294 | rtsx_pci_add_cmd(pcr, READ_REG_CMD, PPBUF_BASE2 + i, 0, 0); | |
295 | if (cnt % 2) | |
296 | rtsx_pci_add_cmd(pcr, READ_REG_CMD, PPBUF_BASE2 + cnt, 0, 0); | |
297 | else | |
298 | rtsx_pci_add_cmd(pcr, READ_REG_CMD, | |
299 | PPBUF_BASE2 + cnt - 1, 0, 0); | |
300 | if (int_reg) | |
301 | rtsx_pci_add_cmd(pcr, READ_REG_CMD, MS_TRANS_CFG, 0, 0); | |
302 | ||
303 | err = rtsx_pci_send_cmd(pcr, 5000); | |
304 | if (err < 0) { | |
305 | u8 val; | |
306 | ||
307 | rtsx_pci_read_register(pcr, MS_TRANS_CFG, &val); | |
308 | dev_dbg(ms_dev(host), "MS_TRANS_CFG: 0x%02x\n", val); | |
309 | ||
310 | if (int_reg) | |
311 | *int_reg = val & 0x0F; | |
312 | ||
313 | ms_print_debug_regs(host); | |
314 | ||
315 | ms_clear_error(host); | |
316 | ||
317 | if (!(tpc & 0x08)) { | |
318 | if (val & MS_CRC16_ERR) | |
319 | return -EIO; | |
320 | } else { | |
321 | if (!(val & 0x80)) { | |
322 | if (val & (MS_INT_ERR | MS_INT_CMDNK)) | |
323 | return -EIO; | |
324 | } | |
325 | } | |
326 | ||
327 | return -ETIMEDOUT; | |
328 | } | |
329 | ||
330 | ptr = rtsx_pci_get_cmd_data(pcr) + 1; | |
331 | for (i = 0; i < cnt; i++) | |
332 | data[i] = *ptr++; | |
333 | ||
334 | if (int_reg) | |
335 | *int_reg = *ptr & 0x0F; | |
336 | ||
337 | return 0; | |
338 | } | |
339 | ||
340 | static int rtsx_pci_ms_issue_cmd(struct realtek_pci_ms *host) | |
341 | { | |
342 | struct memstick_request *req = host->req; | |
343 | int err = 0; | |
344 | u8 cfg = 0, int_reg; | |
345 | ||
346 | dev_dbg(ms_dev(host), "%s\n", __func__); | |
347 | ||
348 | if (req->need_card_int) { | |
349 | if (host->ifmode != MEMSTICK_SERIAL) | |
350 | cfg = WAIT_INT; | |
351 | } | |
352 | ||
353 | if (req->long_data) { | |
354 | err = ms_transfer_data(host, req->data_dir, | |
355 | req->tpc, cfg, &(req->sg)); | |
356 | } else { | |
357 | if (req->data_dir == READ) { | |
358 | err = ms_read_bytes(host, req->tpc, cfg, | |
359 | req->data_len, req->data, &int_reg); | |
360 | } else { | |
361 | err = ms_write_bytes(host, req->tpc, cfg, | |
362 | req->data_len, req->data, &int_reg); | |
363 | } | |
364 | } | |
365 | if (err < 0) | |
366 | return err; | |
367 | ||
368 | if (req->need_card_int && (host->ifmode == MEMSTICK_SERIAL)) { | |
369 | err = ms_read_bytes(host, MS_TPC_GET_INT, | |
370 | NO_WAIT_INT, 1, &int_reg, NULL); | |
371 | if (err < 0) | |
372 | return err; | |
373 | } | |
374 | ||
375 | if (req->need_card_int) { | |
376 | dev_dbg(ms_dev(host), "int_reg: 0x%02x\n", int_reg); | |
377 | ||
378 | if (int_reg & MS_INT_CMDNK) | |
379 | req->int_reg |= MEMSTICK_INT_CMDNAK; | |
380 | if (int_reg & MS_INT_BREQ) | |
381 | req->int_reg |= MEMSTICK_INT_BREQ; | |
382 | if (int_reg & MS_INT_ERR) | |
383 | req->int_reg |= MEMSTICK_INT_ERR; | |
384 | if (int_reg & MS_INT_CED) | |
385 | req->int_reg |= MEMSTICK_INT_CED; | |
386 | } | |
387 | ||
388 | return 0; | |
389 | } | |
390 | ||
391 | static void rtsx_pci_ms_handle_req(struct work_struct *work) | |
392 | { | |
393 | struct realtek_pci_ms *host = container_of(work, | |
394 | struct realtek_pci_ms, handle_req); | |
395 | struct rtsx_pcr *pcr = host->pcr; | |
396 | struct memstick_host *msh = host->msh; | |
397 | int rc; | |
398 | ||
399 | mutex_lock(&pcr->pcr_mutex); | |
400 | ||
401 | rtsx_pci_start_run(pcr); | |
402 | ||
403 | rtsx_pci_switch_clock(host->pcr, host->clock, host->ssc_depth, | |
404 | false, true, false); | |
405 | rtsx_pci_write_register(pcr, CARD_SELECT, 0x07, MS_MOD_SEL); | |
406 | rtsx_pci_write_register(pcr, CARD_SHARE_MODE, | |
407 | CARD_SHARE_MASK, CARD_SHARE_48_MS); | |
408 | ||
409 | if (!host->req) { | |
410 | do { | |
411 | rc = memstick_next_req(msh, &host->req); | |
412 | dev_dbg(ms_dev(host), "next req %d\n", rc); | |
413 | ||
414 | if (!rc) | |
415 | host->req->error = rtsx_pci_ms_issue_cmd(host); | |
416 | } while (!rc); | |
417 | } | |
418 | ||
419 | mutex_unlock(&pcr->pcr_mutex); | |
420 | } | |
421 | ||
422 | static void rtsx_pci_ms_request(struct memstick_host *msh) | |
423 | { | |
424 | struct realtek_pci_ms *host = memstick_priv(msh); | |
425 | ||
426 | dev_dbg(ms_dev(host), "--> %s\n", __func__); | |
427 | ||
c3481955 WW |
428 | if (rtsx_pci_card_exclusive_check(host->pcr, RTSX_MS_CARD)) |
429 | return; | |
430 | ||
b902dd4e WW |
431 | schedule_work(&host->handle_req); |
432 | } | |
433 | ||
434 | static int rtsx_pci_ms_set_param(struct memstick_host *msh, | |
435 | enum memstick_param param, int value) | |
436 | { | |
437 | struct realtek_pci_ms *host = memstick_priv(msh); | |
438 | struct rtsx_pcr *pcr = host->pcr; | |
439 | unsigned int clock = 0; | |
440 | u8 ssc_depth = 0; | |
441 | int err; | |
442 | ||
443 | dev_dbg(ms_dev(host), "%s: param = %d, value = %d\n", | |
444 | __func__, param, value); | |
445 | ||
c3481955 WW |
446 | err = rtsx_pci_card_exclusive_check(host->pcr, RTSX_MS_CARD); |
447 | if (err) | |
448 | return err; | |
449 | ||
b902dd4e WW |
450 | switch (param) { |
451 | case MEMSTICK_POWER: | |
452 | if (value == MEMSTICK_POWER_ON) | |
453 | err = ms_power_on(host); | |
454 | else if (value == MEMSTICK_POWER_OFF) | |
455 | err = ms_power_off(host); | |
456 | else | |
457 | return -EINVAL; | |
458 | break; | |
459 | ||
460 | case MEMSTICK_INTERFACE: | |
461 | if (value == MEMSTICK_SERIAL) { | |
462 | clock = 19000000; | |
463 | ssc_depth = RTSX_SSC_DEPTH_500K; | |
464 | ||
465 | err = rtsx_pci_write_register(pcr, MS_CFG, | |
466 | 0x18, MS_BUS_WIDTH_1); | |
467 | if (err < 0) | |
468 | return err; | |
469 | } else if (value == MEMSTICK_PAR4) { | |
470 | clock = 39000000; | |
471 | ssc_depth = RTSX_SSC_DEPTH_1M; | |
472 | ||
473 | err = rtsx_pci_write_register(pcr, MS_CFG, | |
474 | 0x58, MS_BUS_WIDTH_4 | PUSH_TIME_ODD); | |
475 | if (err < 0) | |
476 | return err; | |
477 | } else { | |
478 | return -EINVAL; | |
479 | } | |
480 | ||
481 | err = rtsx_pci_switch_clock(pcr, clock, | |
482 | ssc_depth, false, true, false); | |
483 | if (err < 0) | |
484 | return err; | |
485 | ||
486 | host->ssc_depth = ssc_depth; | |
487 | host->clock = clock; | |
488 | host->ifmode = value; | |
489 | break; | |
490 | } | |
491 | ||
492 | return 0; | |
493 | } | |
494 | ||
495 | #ifdef CONFIG_PM | |
496 | ||
497 | static int rtsx_pci_ms_suspend(struct platform_device *pdev, pm_message_t state) | |
498 | { | |
499 | struct realtek_pci_ms *host = platform_get_drvdata(pdev); | |
500 | struct memstick_host *msh = host->msh; | |
501 | ||
502 | dev_dbg(ms_dev(host), "--> %s\n", __func__); | |
503 | ||
504 | memstick_suspend_host(msh); | |
505 | return 0; | |
506 | } | |
507 | ||
508 | static int rtsx_pci_ms_resume(struct platform_device *pdev) | |
509 | { | |
510 | struct realtek_pci_ms *host = platform_get_drvdata(pdev); | |
511 | struct memstick_host *msh = host->msh; | |
512 | ||
513 | dev_dbg(ms_dev(host), "--> %s\n", __func__); | |
514 | ||
515 | memstick_resume_host(msh); | |
516 | return 0; | |
517 | } | |
518 | ||
519 | #else /* CONFIG_PM */ | |
520 | ||
521 | #define rtsx_pci_ms_suspend NULL | |
522 | #define rtsx_pci_ms_resume NULL | |
523 | ||
524 | #endif /* CONFIG_PM */ | |
525 | ||
526 | static void rtsx_pci_ms_card_event(struct platform_device *pdev) | |
527 | { | |
528 | struct realtek_pci_ms *host = platform_get_drvdata(pdev); | |
529 | ||
530 | memstick_detect_change(host->msh); | |
531 | } | |
532 | ||
533 | static int rtsx_pci_ms_drv_probe(struct platform_device *pdev) | |
534 | { | |
535 | struct memstick_host *msh; | |
536 | struct realtek_pci_ms *host; | |
537 | struct rtsx_pcr *pcr; | |
538 | struct pcr_handle *handle = pdev->dev.platform_data; | |
539 | int rc; | |
540 | ||
541 | if (!handle) | |
542 | return -ENXIO; | |
543 | ||
544 | pcr = handle->pcr; | |
545 | if (!pcr) | |
546 | return -ENXIO; | |
547 | ||
548 | dev_dbg(&(pdev->dev), | |
549 | ": Realtek PCI-E Memstick controller found\n"); | |
550 | ||
551 | msh = memstick_alloc_host(sizeof(*host), &pdev->dev); | |
552 | if (!msh) | |
553 | return -ENOMEM; | |
554 | ||
555 | host = memstick_priv(msh); | |
556 | host->pcr = pcr; | |
557 | host->msh = msh; | |
558 | host->pdev = pdev; | |
559 | platform_set_drvdata(pdev, host); | |
560 | pcr->slots[RTSX_MS_CARD].p_dev = pdev; | |
561 | pcr->slots[RTSX_MS_CARD].card_event = rtsx_pci_ms_card_event; | |
562 | ||
563 | mutex_init(&host->host_mutex); | |
564 | ||
565 | INIT_WORK(&host->handle_req, rtsx_pci_ms_handle_req); | |
566 | msh->request = rtsx_pci_ms_request; | |
567 | msh->set_param = rtsx_pci_ms_set_param; | |
568 | msh->caps = MEMSTICK_CAP_PAR4; | |
569 | ||
570 | rc = memstick_add_host(msh); | |
571 | if (rc) { | |
572 | memstick_free_host(msh); | |
573 | return rc; | |
574 | } | |
575 | ||
576 | return 0; | |
577 | } | |
578 | ||
579 | static int rtsx_pci_ms_drv_remove(struct platform_device *pdev) | |
580 | { | |
581 | struct realtek_pci_ms *host = platform_get_drvdata(pdev); | |
582 | struct rtsx_pcr *pcr; | |
583 | struct memstick_host *msh; | |
584 | int rc; | |
585 | ||
586 | if (!host) | |
587 | return 0; | |
588 | ||
589 | pcr = host->pcr; | |
590 | pcr->slots[RTSX_MS_CARD].p_dev = NULL; | |
591 | pcr->slots[RTSX_MS_CARD].card_event = NULL; | |
592 | msh = host->msh; | |
593 | host->eject = true; | |
594 | ||
595 | mutex_lock(&host->host_mutex); | |
596 | if (host->req) { | |
597 | dev_dbg(&(pdev->dev), | |
598 | "%s: Controller removed during transfer\n", | |
599 | dev_name(&msh->dev)); | |
600 | ||
601 | rtsx_pci_complete_unfinished_transfer(pcr); | |
602 | ||
603 | host->req->error = -ENOMEDIUM; | |
604 | do { | |
605 | rc = memstick_next_req(msh, &host->req); | |
606 | if (!rc) | |
607 | host->req->error = -ENOMEDIUM; | |
608 | } while (!rc); | |
609 | } | |
610 | mutex_unlock(&host->host_mutex); | |
611 | ||
612 | memstick_remove_host(msh); | |
613 | memstick_free_host(msh); | |
614 | ||
b902dd4e WW |
615 | dev_dbg(&(pdev->dev), |
616 | ": Realtek PCI-E Memstick controller has been removed\n"); | |
617 | ||
618 | return 0; | |
619 | } | |
620 | ||
621 | static struct platform_device_id rtsx_pci_ms_ids[] = { | |
622 | { | |
623 | .name = DRV_NAME_RTSX_PCI_MS, | |
624 | }, { | |
625 | /* sentinel */ | |
626 | } | |
627 | }; | |
628 | MODULE_DEVICE_TABLE(platform, rtsx_pci_ms_ids); | |
629 | ||
630 | static struct platform_driver rtsx_pci_ms_driver = { | |
631 | .probe = rtsx_pci_ms_drv_probe, | |
632 | .remove = rtsx_pci_ms_drv_remove, | |
633 | .id_table = rtsx_pci_ms_ids, | |
634 | .suspend = rtsx_pci_ms_suspend, | |
635 | .resume = rtsx_pci_ms_resume, | |
636 | .driver = { | |
637 | .owner = THIS_MODULE, | |
638 | .name = DRV_NAME_RTSX_PCI_MS, | |
639 | }, | |
640 | }; | |
641 | module_platform_driver(rtsx_pci_ms_driver); | |
642 | ||
643 | MODULE_LICENSE("GPL"); | |
644 | MODULE_AUTHOR("Wei WANG <wei_wang@realsil.com.cn>"); | |
645 | MODULE_DESCRIPTION("Realtek PCI-E Memstick Card Host Driver"); |