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