Commit | Line | Data |
---|---|---|
a45c6cb8 MC |
1 | /* |
2 | * drivers/mmc/host/omap_hsmmc.c | |
3 | * | |
4 | * Driver for OMAP2430/3430 MMC controller. | |
5 | * | |
6 | * Copyright (C) 2007 Texas Instruments. | |
7 | * | |
8 | * Authors: | |
9 | * Syed Mohammed Khasim <x0khasim@ti.com> | |
10 | * Madhusudhan <madhu.cr@ti.com> | |
11 | * Mohit Jalori <mjalori@ti.com> | |
12 | * | |
13 | * This file is licensed under the terms of the GNU General Public License | |
14 | * version 2. This program is licensed "as is" without any warranty of any | |
15 | * kind, whether express or implied. | |
16 | */ | |
17 | ||
18 | #include <linux/module.h> | |
19 | #include <linux/init.h> | |
ac330f44 | 20 | #include <linux/kernel.h> |
d900f712 DK |
21 | #include <linux/debugfs.h> |
22 | #include <linux/seq_file.h> | |
a45c6cb8 MC |
23 | #include <linux/interrupt.h> |
24 | #include <linux/delay.h> | |
25 | #include <linux/dma-mapping.h> | |
26 | #include <linux/platform_device.h> | |
a45c6cb8 MC |
27 | #include <linux/timer.h> |
28 | #include <linux/clk.h> | |
46856a68 RN |
29 | #include <linux/of.h> |
30 | #include <linux/of_gpio.h> | |
31 | #include <linux/of_device.h> | |
a45c6cb8 | 32 | #include <linux/mmc/host.h> |
13189e78 | 33 | #include <linux/mmc/core.h> |
93caf8e6 | 34 | #include <linux/mmc/mmc.h> |
a45c6cb8 MC |
35 | #include <linux/io.h> |
36 | #include <linux/semaphore.h> | |
db0fefc5 AH |
37 | #include <linux/gpio.h> |
38 | #include <linux/regulator/consumer.h> | |
fa4aa2d4 | 39 | #include <linux/pm_runtime.h> |
ce491cf8 | 40 | #include <plat/dma.h> |
a45c6cb8 | 41 | #include <mach/hardware.h> |
ce491cf8 TL |
42 | #include <plat/board.h> |
43 | #include <plat/mmc.h> | |
44 | #include <plat/cpu.h> | |
a45c6cb8 MC |
45 | |
46 | /* OMAP HSMMC Host Controller Registers */ | |
47 | #define OMAP_HSMMC_SYSCONFIG 0x0010 | |
11dd62a7 | 48 | #define OMAP_HSMMC_SYSSTATUS 0x0014 |
a45c6cb8 MC |
49 | #define OMAP_HSMMC_CON 0x002C |
50 | #define OMAP_HSMMC_BLK 0x0104 | |
51 | #define OMAP_HSMMC_ARG 0x0108 | |
52 | #define OMAP_HSMMC_CMD 0x010C | |
53 | #define OMAP_HSMMC_RSP10 0x0110 | |
54 | #define OMAP_HSMMC_RSP32 0x0114 | |
55 | #define OMAP_HSMMC_RSP54 0x0118 | |
56 | #define OMAP_HSMMC_RSP76 0x011C | |
57 | #define OMAP_HSMMC_DATA 0x0120 | |
58 | #define OMAP_HSMMC_HCTL 0x0128 | |
59 | #define OMAP_HSMMC_SYSCTL 0x012C | |
60 | #define OMAP_HSMMC_STAT 0x0130 | |
61 | #define OMAP_HSMMC_IE 0x0134 | |
62 | #define OMAP_HSMMC_ISE 0x0138 | |
63 | #define OMAP_HSMMC_CAPA 0x0140 | |
64 | ||
65 | #define VS18 (1 << 26) | |
66 | #define VS30 (1 << 25) | |
67 | #define SDVS18 (0x5 << 9) | |
68 | #define SDVS30 (0x6 << 9) | |
eb250826 | 69 | #define SDVS33 (0x7 << 9) |
1b331e69 | 70 | #define SDVS_MASK 0x00000E00 |
a45c6cb8 MC |
71 | #define SDVSCLR 0xFFFFF1FF |
72 | #define SDVSDET 0x00000400 | |
73 | #define AUTOIDLE 0x1 | |
74 | #define SDBP (1 << 8) | |
75 | #define DTO 0xe | |
76 | #define ICE 0x1 | |
77 | #define ICS 0x2 | |
78 | #define CEN (1 << 2) | |
79 | #define CLKD_MASK 0x0000FFC0 | |
80 | #define CLKD_SHIFT 6 | |
81 | #define DTO_MASK 0x000F0000 | |
82 | #define DTO_SHIFT 16 | |
83 | #define INT_EN_MASK 0x307F0033 | |
ccdfe3a6 AG |
84 | #define BWR_ENABLE (1 << 4) |
85 | #define BRR_ENABLE (1 << 5) | |
93caf8e6 | 86 | #define DTO_ENABLE (1 << 20) |
a45c6cb8 MC |
87 | #define INIT_STREAM (1 << 1) |
88 | #define DP_SELECT (1 << 21) | |
89 | #define DDIR (1 << 4) | |
90 | #define DMA_EN 0x1 | |
91 | #define MSBS (1 << 5) | |
92 | #define BCE (1 << 1) | |
93 | #define FOUR_BIT (1 << 1) | |
73153010 | 94 | #define DW8 (1 << 5) |
a45c6cb8 MC |
95 | #define CC 0x1 |
96 | #define TC 0x02 | |
97 | #define OD 0x1 | |
98 | #define ERR (1 << 15) | |
99 | #define CMD_TIMEOUT (1 << 16) | |
100 | #define DATA_TIMEOUT (1 << 20) | |
101 | #define CMD_CRC (1 << 17) | |
102 | #define DATA_CRC (1 << 21) | |
103 | #define CARD_ERR (1 << 28) | |
104 | #define STAT_CLEAR 0xFFFFFFFF | |
105 | #define INIT_STREAM_CMD 0x00000000 | |
106 | #define DUAL_VOLT_OCR_BIT 7 | |
107 | #define SRC (1 << 25) | |
108 | #define SRD (1 << 26) | |
11dd62a7 DK |
109 | #define SOFTRESET (1 << 1) |
110 | #define RESETDONE (1 << 0) | |
a45c6cb8 | 111 | |
fa4aa2d4 | 112 | #define MMC_AUTOSUSPEND_DELAY 100 |
a45c6cb8 | 113 | #define MMC_TIMEOUT_MS 20 |
6b206efe AS |
114 | #define OMAP_MMC_MIN_CLOCK 400000 |
115 | #define OMAP_MMC_MAX_CLOCK 52000000 | |
0005ae73 | 116 | #define DRIVER_NAME "omap_hsmmc" |
a45c6cb8 MC |
117 | |
118 | /* | |
119 | * One controller can have multiple slots, like on some omap boards using | |
120 | * omap.c controller driver. Luckily this is not currently done on any known | |
121 | * omap_hsmmc.c device. | |
122 | */ | |
123 | #define mmc_slot(host) (host->pdata->slots[host->slot_id]) | |
124 | ||
125 | /* | |
126 | * MMC Host controller read/write API's | |
127 | */ | |
128 | #define OMAP_HSMMC_READ(base, reg) \ | |
129 | __raw_readl((base) + OMAP_HSMMC_##reg) | |
130 | ||
131 | #define OMAP_HSMMC_WRITE(base, reg, val) \ | |
132 | __raw_writel((val), (base) + OMAP_HSMMC_##reg) | |
133 | ||
9782aff8 PF |
134 | struct omap_hsmmc_next { |
135 | unsigned int dma_len; | |
136 | s32 cookie; | |
137 | }; | |
138 | ||
70a3341a | 139 | struct omap_hsmmc_host { |
a45c6cb8 MC |
140 | struct device *dev; |
141 | struct mmc_host *mmc; | |
142 | struct mmc_request *mrq; | |
143 | struct mmc_command *cmd; | |
144 | struct mmc_data *data; | |
145 | struct clk *fclk; | |
a45c6cb8 | 146 | struct clk *dbclk; |
db0fefc5 AH |
147 | /* |
148 | * vcc == configured supply | |
149 | * vcc_aux == optional | |
150 | * - MMC1, supply for DAT4..DAT7 | |
151 | * - MMC2/MMC2, external level shifter voltage supply, for | |
152 | * chip (SDIO, eMMC, etc) or transceiver (MMC2 only) | |
153 | */ | |
154 | struct regulator *vcc; | |
155 | struct regulator *vcc_aux; | |
a45c6cb8 MC |
156 | void __iomem *base; |
157 | resource_size_t mapbase; | |
4dffd7a2 | 158 | spinlock_t irq_lock; /* Prevent races with irq handler */ |
a45c6cb8 | 159 | unsigned int dma_len; |
0ccd76d4 | 160 | unsigned int dma_sg_idx; |
a45c6cb8 | 161 | unsigned char bus_mode; |
a3621465 | 162 | unsigned char power_mode; |
a45c6cb8 MC |
163 | u32 *buffer; |
164 | u32 bytesleft; | |
165 | int suspended; | |
166 | int irq; | |
a45c6cb8 | 167 | int use_dma, dma_ch; |
f3e2f1dd | 168 | int dma_line_tx, dma_line_rx; |
a45c6cb8 | 169 | int slot_id; |
2bec0893 | 170 | int got_dbclk; |
4a694dc9 | 171 | int response_busy; |
11dd62a7 | 172 | int context_loss; |
623821f7 | 173 | int vdd; |
b62f6228 AH |
174 | int protect_card; |
175 | int reqs_blocked; | |
db0fefc5 | 176 | int use_reg; |
b417577d | 177 | int req_in_progress; |
9782aff8 | 178 | struct omap_hsmmc_next next_data; |
11dd62a7 | 179 | |
a45c6cb8 MC |
180 | struct omap_mmc_platform_data *pdata; |
181 | }; | |
182 | ||
db0fefc5 AH |
183 | static int omap_hsmmc_card_detect(struct device *dev, int slot) |
184 | { | |
185 | struct omap_mmc_platform_data *mmc = dev->platform_data; | |
186 | ||
187 | /* NOTE: assumes card detect signal is active-low */ | |
188 | return !gpio_get_value_cansleep(mmc->slots[0].switch_pin); | |
189 | } | |
190 | ||
191 | static int omap_hsmmc_get_wp(struct device *dev, int slot) | |
192 | { | |
193 | struct omap_mmc_platform_data *mmc = dev->platform_data; | |
194 | ||
195 | /* NOTE: assumes write protect signal is active-high */ | |
196 | return gpio_get_value_cansleep(mmc->slots[0].gpio_wp); | |
197 | } | |
198 | ||
199 | static int omap_hsmmc_get_cover_state(struct device *dev, int slot) | |
200 | { | |
201 | struct omap_mmc_platform_data *mmc = dev->platform_data; | |
202 | ||
203 | /* NOTE: assumes card detect signal is active-low */ | |
204 | return !gpio_get_value_cansleep(mmc->slots[0].switch_pin); | |
205 | } | |
206 | ||
207 | #ifdef CONFIG_PM | |
208 | ||
209 | static int omap_hsmmc_suspend_cdirq(struct device *dev, int slot) | |
210 | { | |
211 | struct omap_mmc_platform_data *mmc = dev->platform_data; | |
212 | ||
213 | disable_irq(mmc->slots[0].card_detect_irq); | |
214 | return 0; | |
215 | } | |
216 | ||
217 | static int omap_hsmmc_resume_cdirq(struct device *dev, int slot) | |
218 | { | |
219 | struct omap_mmc_platform_data *mmc = dev->platform_data; | |
220 | ||
221 | enable_irq(mmc->slots[0].card_detect_irq); | |
222 | return 0; | |
223 | } | |
224 | ||
225 | #else | |
226 | ||
227 | #define omap_hsmmc_suspend_cdirq NULL | |
228 | #define omap_hsmmc_resume_cdirq NULL | |
229 | ||
230 | #endif | |
231 | ||
b702b106 AH |
232 | #ifdef CONFIG_REGULATOR |
233 | ||
69b07ece | 234 | static int omap_hsmmc_set_power(struct device *dev, int slot, int power_on, |
db0fefc5 AH |
235 | int vdd) |
236 | { | |
237 | struct omap_hsmmc_host *host = | |
238 | platform_get_drvdata(to_platform_device(dev)); | |
239 | int ret = 0; | |
240 | ||
241 | /* | |
242 | * If we don't see a Vcc regulator, assume it's a fixed | |
243 | * voltage always-on regulator. | |
244 | */ | |
245 | if (!host->vcc) | |
246 | return 0; | |
1f84b71b RN |
247 | /* |
248 | * With DT, never turn OFF the regulator. This is because | |
249 | * the pbias cell programming support is still missing when | |
250 | * booting with Device tree | |
251 | */ | |
252 | if (of_have_populated_dt() && !vdd) | |
253 | return 0; | |
db0fefc5 AH |
254 | |
255 | if (mmc_slot(host).before_set_reg) | |
256 | mmc_slot(host).before_set_reg(dev, slot, power_on, vdd); | |
257 | ||
258 | /* | |
259 | * Assume Vcc regulator is used only to power the card ... OMAP | |
260 | * VDDS is used to power the pins, optionally with a transceiver to | |
261 | * support cards using voltages other than VDDS (1.8V nominal). When a | |
262 | * transceiver is used, DAT3..7 are muxed as transceiver control pins. | |
263 | * | |
264 | * In some cases this regulator won't support enable/disable; | |
265 | * e.g. it's a fixed rail for a WLAN chip. | |
266 | * | |
267 | * In other cases vcc_aux switches interface power. Example, for | |
268 | * eMMC cards it represents VccQ. Sometimes transceivers or SDIO | |
269 | * chips/cards need an interface voltage rail too. | |
270 | */ | |
271 | if (power_on) { | |
99fc5131 | 272 | ret = mmc_regulator_set_ocr(host->mmc, host->vcc, vdd); |
db0fefc5 AH |
273 | /* Enable interface voltage rail, if needed */ |
274 | if (ret == 0 && host->vcc_aux) { | |
275 | ret = regulator_enable(host->vcc_aux); | |
276 | if (ret < 0) | |
99fc5131 LW |
277 | ret = mmc_regulator_set_ocr(host->mmc, |
278 | host->vcc, 0); | |
db0fefc5 AH |
279 | } |
280 | } else { | |
99fc5131 | 281 | /* Shut down the rail */ |
6da20c89 AH |
282 | if (host->vcc_aux) |
283 | ret = regulator_disable(host->vcc_aux); | |
99fc5131 LW |
284 | if (!ret) { |
285 | /* Then proceed to shut down the local regulator */ | |
286 | ret = mmc_regulator_set_ocr(host->mmc, | |
287 | host->vcc, 0); | |
288 | } | |
db0fefc5 AH |
289 | } |
290 | ||
291 | if (mmc_slot(host).after_set_reg) | |
292 | mmc_slot(host).after_set_reg(dev, slot, power_on, vdd); | |
293 | ||
294 | return ret; | |
295 | } | |
296 | ||
db0fefc5 AH |
297 | static int omap_hsmmc_reg_get(struct omap_hsmmc_host *host) |
298 | { | |
299 | struct regulator *reg; | |
64be9782 | 300 | int ocr_value = 0; |
db0fefc5 | 301 | |
1cb9af49 | 302 | mmc_slot(host).set_power = omap_hsmmc_set_power; |
db0fefc5 AH |
303 | |
304 | reg = regulator_get(host->dev, "vmmc"); | |
305 | if (IS_ERR(reg)) { | |
306 | dev_dbg(host->dev, "vmmc regulator missing\n"); | |
db0fefc5 AH |
307 | } else { |
308 | host->vcc = reg; | |
64be9782 | 309 | ocr_value = mmc_regulator_get_ocrmask(reg); |
310 | if (!mmc_slot(host).ocr_mask) { | |
311 | mmc_slot(host).ocr_mask = ocr_value; | |
312 | } else { | |
313 | if (!(mmc_slot(host).ocr_mask & ocr_value)) { | |
2cecdf00 | 314 | dev_err(host->dev, "ocrmask %x is not supported\n", |
e3f1adb6 | 315 | mmc_slot(host).ocr_mask); |
64be9782 | 316 | mmc_slot(host).ocr_mask = 0; |
317 | return -EINVAL; | |
318 | } | |
319 | } | |
db0fefc5 AH |
320 | |
321 | /* Allow an aux regulator */ | |
322 | reg = regulator_get(host->dev, "vmmc_aux"); | |
323 | host->vcc_aux = IS_ERR(reg) ? NULL : reg; | |
324 | ||
b1c1df7a B |
325 | /* For eMMC do not power off when not in sleep state */ |
326 | if (mmc_slot(host).no_regulator_off_init) | |
327 | return 0; | |
db0fefc5 AH |
328 | /* |
329 | * UGLY HACK: workaround regulator framework bugs. | |
330 | * When the bootloader leaves a supply active, it's | |
331 | * initialized with zero usecount ... and we can't | |
332 | * disable it without first enabling it. Until the | |
333 | * framework is fixed, we need a workaround like this | |
334 | * (which is safe for MMC, but not in general). | |
335 | */ | |
e840ce13 AH |
336 | if (regulator_is_enabled(host->vcc) > 0 || |
337 | (host->vcc_aux && regulator_is_enabled(host->vcc_aux))) { | |
338 | int vdd = ffs(mmc_slot(host).ocr_mask) - 1; | |
339 | ||
340 | mmc_slot(host).set_power(host->dev, host->slot_id, | |
341 | 1, vdd); | |
342 | mmc_slot(host).set_power(host->dev, host->slot_id, | |
343 | 0, 0); | |
db0fefc5 AH |
344 | } |
345 | } | |
346 | ||
347 | return 0; | |
db0fefc5 AH |
348 | } |
349 | ||
350 | static void omap_hsmmc_reg_put(struct omap_hsmmc_host *host) | |
351 | { | |
352 | regulator_put(host->vcc); | |
353 | regulator_put(host->vcc_aux); | |
354 | mmc_slot(host).set_power = NULL; | |
db0fefc5 AH |
355 | } |
356 | ||
b702b106 AH |
357 | static inline int omap_hsmmc_have_reg(void) |
358 | { | |
359 | return 1; | |
360 | } | |
361 | ||
362 | #else | |
363 | ||
364 | static inline int omap_hsmmc_reg_get(struct omap_hsmmc_host *host) | |
365 | { | |
366 | return -EINVAL; | |
367 | } | |
368 | ||
369 | static inline void omap_hsmmc_reg_put(struct omap_hsmmc_host *host) | |
370 | { | |
371 | } | |
372 | ||
373 | static inline int omap_hsmmc_have_reg(void) | |
374 | { | |
375 | return 0; | |
376 | } | |
377 | ||
378 | #endif | |
379 | ||
380 | static int omap_hsmmc_gpio_init(struct omap_mmc_platform_data *pdata) | |
381 | { | |
382 | int ret; | |
383 | ||
384 | if (gpio_is_valid(pdata->slots[0].switch_pin)) { | |
b702b106 AH |
385 | if (pdata->slots[0].cover) |
386 | pdata->slots[0].get_cover_state = | |
387 | omap_hsmmc_get_cover_state; | |
388 | else | |
389 | pdata->slots[0].card_detect = omap_hsmmc_card_detect; | |
390 | pdata->slots[0].card_detect_irq = | |
391 | gpio_to_irq(pdata->slots[0].switch_pin); | |
392 | ret = gpio_request(pdata->slots[0].switch_pin, "mmc_cd"); | |
393 | if (ret) | |
394 | return ret; | |
395 | ret = gpio_direction_input(pdata->slots[0].switch_pin); | |
396 | if (ret) | |
397 | goto err_free_sp; | |
398 | } else | |
399 | pdata->slots[0].switch_pin = -EINVAL; | |
400 | ||
401 | if (gpio_is_valid(pdata->slots[0].gpio_wp)) { | |
402 | pdata->slots[0].get_ro = omap_hsmmc_get_wp; | |
403 | ret = gpio_request(pdata->slots[0].gpio_wp, "mmc_wp"); | |
404 | if (ret) | |
405 | goto err_free_cd; | |
406 | ret = gpio_direction_input(pdata->slots[0].gpio_wp); | |
407 | if (ret) | |
408 | goto err_free_wp; | |
409 | } else | |
410 | pdata->slots[0].gpio_wp = -EINVAL; | |
411 | ||
412 | return 0; | |
413 | ||
414 | err_free_wp: | |
415 | gpio_free(pdata->slots[0].gpio_wp); | |
416 | err_free_cd: | |
417 | if (gpio_is_valid(pdata->slots[0].switch_pin)) | |
418 | err_free_sp: | |
419 | gpio_free(pdata->slots[0].switch_pin); | |
420 | return ret; | |
421 | } | |
422 | ||
423 | static void omap_hsmmc_gpio_free(struct omap_mmc_platform_data *pdata) | |
424 | { | |
425 | if (gpio_is_valid(pdata->slots[0].gpio_wp)) | |
426 | gpio_free(pdata->slots[0].gpio_wp); | |
427 | if (gpio_is_valid(pdata->slots[0].switch_pin)) | |
428 | gpio_free(pdata->slots[0].switch_pin); | |
429 | } | |
430 | ||
e0c7f99b AS |
431 | /* |
432 | * Start clock to the card | |
433 | */ | |
434 | static void omap_hsmmc_start_clock(struct omap_hsmmc_host *host) | |
435 | { | |
436 | OMAP_HSMMC_WRITE(host->base, SYSCTL, | |
437 | OMAP_HSMMC_READ(host->base, SYSCTL) | CEN); | |
438 | } | |
439 | ||
a45c6cb8 MC |
440 | /* |
441 | * Stop clock to the card | |
442 | */ | |
70a3341a | 443 | static void omap_hsmmc_stop_clock(struct omap_hsmmc_host *host) |
a45c6cb8 MC |
444 | { |
445 | OMAP_HSMMC_WRITE(host->base, SYSCTL, | |
446 | OMAP_HSMMC_READ(host->base, SYSCTL) & ~CEN); | |
447 | if ((OMAP_HSMMC_READ(host->base, SYSCTL) & CEN) != 0x0) | |
448 | dev_dbg(mmc_dev(host->mmc), "MMC Clock is not stoped\n"); | |
449 | } | |
450 | ||
93caf8e6 AH |
451 | static void omap_hsmmc_enable_irq(struct omap_hsmmc_host *host, |
452 | struct mmc_command *cmd) | |
b417577d AH |
453 | { |
454 | unsigned int irq_mask; | |
455 | ||
456 | if (host->use_dma) | |
457 | irq_mask = INT_EN_MASK & ~(BRR_ENABLE | BWR_ENABLE); | |
458 | else | |
459 | irq_mask = INT_EN_MASK; | |
460 | ||
93caf8e6 AH |
461 | /* Disable timeout for erases */ |
462 | if (cmd->opcode == MMC_ERASE) | |
463 | irq_mask &= ~DTO_ENABLE; | |
464 | ||
b417577d AH |
465 | OMAP_HSMMC_WRITE(host->base, STAT, STAT_CLEAR); |
466 | OMAP_HSMMC_WRITE(host->base, ISE, irq_mask); | |
467 | OMAP_HSMMC_WRITE(host->base, IE, irq_mask); | |
468 | } | |
469 | ||
470 | static void omap_hsmmc_disable_irq(struct omap_hsmmc_host *host) | |
471 | { | |
472 | OMAP_HSMMC_WRITE(host->base, ISE, 0); | |
473 | OMAP_HSMMC_WRITE(host->base, IE, 0); | |
474 | OMAP_HSMMC_WRITE(host->base, STAT, STAT_CLEAR); | |
475 | } | |
476 | ||
ac330f44 | 477 | /* Calculate divisor for the given clock frequency */ |
d83b6e03 | 478 | static u16 calc_divisor(struct omap_hsmmc_host *host, struct mmc_ios *ios) |
ac330f44 AS |
479 | { |
480 | u16 dsor = 0; | |
481 | ||
482 | if (ios->clock) { | |
d83b6e03 | 483 | dsor = DIV_ROUND_UP(clk_get_rate(host->fclk), ios->clock); |
ac330f44 AS |
484 | if (dsor > 250) |
485 | dsor = 250; | |
486 | } | |
487 | ||
488 | return dsor; | |
489 | } | |
490 | ||
5934df2f AS |
491 | static void omap_hsmmc_set_clock(struct omap_hsmmc_host *host) |
492 | { | |
493 | struct mmc_ios *ios = &host->mmc->ios; | |
494 | unsigned long regval; | |
495 | unsigned long timeout; | |
496 | ||
497 | dev_dbg(mmc_dev(host->mmc), "Set clock to %uHz\n", ios->clock); | |
498 | ||
499 | omap_hsmmc_stop_clock(host); | |
500 | ||
501 | regval = OMAP_HSMMC_READ(host->base, SYSCTL); | |
502 | regval = regval & ~(CLKD_MASK | DTO_MASK); | |
d83b6e03 | 503 | regval = regval | (calc_divisor(host, ios) << 6) | (DTO << 16); |
5934df2f AS |
504 | OMAP_HSMMC_WRITE(host->base, SYSCTL, regval); |
505 | OMAP_HSMMC_WRITE(host->base, SYSCTL, | |
506 | OMAP_HSMMC_READ(host->base, SYSCTL) | ICE); | |
507 | ||
508 | /* Wait till the ICS bit is set */ | |
509 | timeout = jiffies + msecs_to_jiffies(MMC_TIMEOUT_MS); | |
510 | while ((OMAP_HSMMC_READ(host->base, SYSCTL) & ICS) != ICS | |
511 | && time_before(jiffies, timeout)) | |
512 | cpu_relax(); | |
513 | ||
514 | omap_hsmmc_start_clock(host); | |
515 | } | |
516 | ||
3796fb8a AS |
517 | static void omap_hsmmc_set_bus_width(struct omap_hsmmc_host *host) |
518 | { | |
519 | struct mmc_ios *ios = &host->mmc->ios; | |
520 | u32 con; | |
521 | ||
522 | con = OMAP_HSMMC_READ(host->base, CON); | |
523 | switch (ios->bus_width) { | |
524 | case MMC_BUS_WIDTH_8: | |
525 | OMAP_HSMMC_WRITE(host->base, CON, con | DW8); | |
526 | break; | |
527 | case MMC_BUS_WIDTH_4: | |
528 | OMAP_HSMMC_WRITE(host->base, CON, con & ~DW8); | |
529 | OMAP_HSMMC_WRITE(host->base, HCTL, | |
530 | OMAP_HSMMC_READ(host->base, HCTL) | FOUR_BIT); | |
531 | break; | |
532 | case MMC_BUS_WIDTH_1: | |
533 | OMAP_HSMMC_WRITE(host->base, CON, con & ~DW8); | |
534 | OMAP_HSMMC_WRITE(host->base, HCTL, | |
535 | OMAP_HSMMC_READ(host->base, HCTL) & ~FOUR_BIT); | |
536 | break; | |
537 | } | |
538 | } | |
539 | ||
540 | static void omap_hsmmc_set_bus_mode(struct omap_hsmmc_host *host) | |
541 | { | |
542 | struct mmc_ios *ios = &host->mmc->ios; | |
543 | u32 con; | |
544 | ||
545 | con = OMAP_HSMMC_READ(host->base, CON); | |
546 | if (ios->bus_mode == MMC_BUSMODE_OPENDRAIN) | |
547 | OMAP_HSMMC_WRITE(host->base, CON, con | OD); | |
548 | else | |
549 | OMAP_HSMMC_WRITE(host->base, CON, con & ~OD); | |
550 | } | |
551 | ||
11dd62a7 DK |
552 | #ifdef CONFIG_PM |
553 | ||
554 | /* | |
555 | * Restore the MMC host context, if it was lost as result of a | |
556 | * power state change. | |
557 | */ | |
70a3341a | 558 | static int omap_hsmmc_context_restore(struct omap_hsmmc_host *host) |
11dd62a7 DK |
559 | { |
560 | struct mmc_ios *ios = &host->mmc->ios; | |
561 | struct omap_mmc_platform_data *pdata = host->pdata; | |
562 | int context_loss = 0; | |
3796fb8a | 563 | u32 hctl, capa; |
11dd62a7 DK |
564 | unsigned long timeout; |
565 | ||
566 | if (pdata->get_context_loss_count) { | |
567 | context_loss = pdata->get_context_loss_count(host->dev); | |
568 | if (context_loss < 0) | |
569 | return 1; | |
570 | } | |
571 | ||
572 | dev_dbg(mmc_dev(host->mmc), "context was %slost\n", | |
573 | context_loss == host->context_loss ? "not " : ""); | |
574 | if (host->context_loss == context_loss) | |
575 | return 1; | |
576 | ||
577 | /* Wait for hardware reset */ | |
578 | timeout = jiffies + msecs_to_jiffies(MMC_TIMEOUT_MS); | |
579 | while ((OMAP_HSMMC_READ(host->base, SYSSTATUS) & RESETDONE) != RESETDONE | |
580 | && time_before(jiffies, timeout)) | |
581 | ; | |
582 | ||
583 | /* Do software reset */ | |
584 | OMAP_HSMMC_WRITE(host->base, SYSCONFIG, SOFTRESET); | |
585 | timeout = jiffies + msecs_to_jiffies(MMC_TIMEOUT_MS); | |
586 | while ((OMAP_HSMMC_READ(host->base, SYSSTATUS) & RESETDONE) != RESETDONE | |
587 | && time_before(jiffies, timeout)) | |
588 | ; | |
589 | ||
590 | OMAP_HSMMC_WRITE(host->base, SYSCONFIG, | |
591 | OMAP_HSMMC_READ(host->base, SYSCONFIG) | AUTOIDLE); | |
592 | ||
c2200efb | 593 | if (host->pdata->controller_flags & OMAP_HSMMC_SUPPORTS_DUAL_VOLT) { |
11dd62a7 DK |
594 | if (host->power_mode != MMC_POWER_OFF && |
595 | (1 << ios->vdd) <= MMC_VDD_23_24) | |
596 | hctl = SDVS18; | |
597 | else | |
598 | hctl = SDVS30; | |
599 | capa = VS30 | VS18; | |
600 | } else { | |
601 | hctl = SDVS18; | |
602 | capa = VS18; | |
603 | } | |
604 | ||
605 | OMAP_HSMMC_WRITE(host->base, HCTL, | |
606 | OMAP_HSMMC_READ(host->base, HCTL) | hctl); | |
607 | ||
608 | OMAP_HSMMC_WRITE(host->base, CAPA, | |
609 | OMAP_HSMMC_READ(host->base, CAPA) | capa); | |
610 | ||
611 | OMAP_HSMMC_WRITE(host->base, HCTL, | |
612 | OMAP_HSMMC_READ(host->base, HCTL) | SDBP); | |
613 | ||
614 | timeout = jiffies + msecs_to_jiffies(MMC_TIMEOUT_MS); | |
615 | while ((OMAP_HSMMC_READ(host->base, HCTL) & SDBP) != SDBP | |
616 | && time_before(jiffies, timeout)) | |
617 | ; | |
618 | ||
b417577d | 619 | omap_hsmmc_disable_irq(host); |
11dd62a7 DK |
620 | |
621 | /* Do not initialize card-specific things if the power is off */ | |
622 | if (host->power_mode == MMC_POWER_OFF) | |
623 | goto out; | |
624 | ||
3796fb8a | 625 | omap_hsmmc_set_bus_width(host); |
11dd62a7 | 626 | |
5934df2f | 627 | omap_hsmmc_set_clock(host); |
11dd62a7 | 628 | |
3796fb8a AS |
629 | omap_hsmmc_set_bus_mode(host); |
630 | ||
11dd62a7 DK |
631 | out: |
632 | host->context_loss = context_loss; | |
633 | ||
634 | dev_dbg(mmc_dev(host->mmc), "context is restored\n"); | |
635 | return 0; | |
636 | } | |
637 | ||
638 | /* | |
639 | * Save the MMC host context (store the number of power state changes so far). | |
640 | */ | |
70a3341a | 641 | static void omap_hsmmc_context_save(struct omap_hsmmc_host *host) |
11dd62a7 DK |
642 | { |
643 | struct omap_mmc_platform_data *pdata = host->pdata; | |
644 | int context_loss; | |
645 | ||
646 | if (pdata->get_context_loss_count) { | |
647 | context_loss = pdata->get_context_loss_count(host->dev); | |
648 | if (context_loss < 0) | |
649 | return; | |
650 | host->context_loss = context_loss; | |
651 | } | |
652 | } | |
653 | ||
654 | #else | |
655 | ||
70a3341a | 656 | static int omap_hsmmc_context_restore(struct omap_hsmmc_host *host) |
11dd62a7 DK |
657 | { |
658 | return 0; | |
659 | } | |
660 | ||
70a3341a | 661 | static void omap_hsmmc_context_save(struct omap_hsmmc_host *host) |
11dd62a7 DK |
662 | { |
663 | } | |
664 | ||
665 | #endif | |
666 | ||
a45c6cb8 MC |
667 | /* |
668 | * Send init stream sequence to card | |
669 | * before sending IDLE command | |
670 | */ | |
70a3341a | 671 | static void send_init_stream(struct omap_hsmmc_host *host) |
a45c6cb8 MC |
672 | { |
673 | int reg = 0; | |
674 | unsigned long timeout; | |
675 | ||
b62f6228 AH |
676 | if (host->protect_card) |
677 | return; | |
678 | ||
a45c6cb8 | 679 | disable_irq(host->irq); |
b417577d AH |
680 | |
681 | OMAP_HSMMC_WRITE(host->base, IE, INT_EN_MASK); | |
a45c6cb8 MC |
682 | OMAP_HSMMC_WRITE(host->base, CON, |
683 | OMAP_HSMMC_READ(host->base, CON) | INIT_STREAM); | |
684 | OMAP_HSMMC_WRITE(host->base, CMD, INIT_STREAM_CMD); | |
685 | ||
686 | timeout = jiffies + msecs_to_jiffies(MMC_TIMEOUT_MS); | |
687 | while ((reg != CC) && time_before(jiffies, timeout)) | |
688 | reg = OMAP_HSMMC_READ(host->base, STAT) & CC; | |
689 | ||
690 | OMAP_HSMMC_WRITE(host->base, CON, | |
691 | OMAP_HSMMC_READ(host->base, CON) & ~INIT_STREAM); | |
c653a6d4 AH |
692 | |
693 | OMAP_HSMMC_WRITE(host->base, STAT, STAT_CLEAR); | |
694 | OMAP_HSMMC_READ(host->base, STAT); | |
695 | ||
a45c6cb8 MC |
696 | enable_irq(host->irq); |
697 | } | |
698 | ||
699 | static inline | |
70a3341a | 700 | int omap_hsmmc_cover_is_closed(struct omap_hsmmc_host *host) |
a45c6cb8 MC |
701 | { |
702 | int r = 1; | |
703 | ||
191d1f1d DK |
704 | if (mmc_slot(host).get_cover_state) |
705 | r = mmc_slot(host).get_cover_state(host->dev, host->slot_id); | |
a45c6cb8 MC |
706 | return r; |
707 | } | |
708 | ||
709 | static ssize_t | |
70a3341a | 710 | omap_hsmmc_show_cover_switch(struct device *dev, struct device_attribute *attr, |
a45c6cb8 MC |
711 | char *buf) |
712 | { | |
713 | struct mmc_host *mmc = container_of(dev, struct mmc_host, class_dev); | |
70a3341a | 714 | struct omap_hsmmc_host *host = mmc_priv(mmc); |
a45c6cb8 | 715 | |
70a3341a DK |
716 | return sprintf(buf, "%s\n", |
717 | omap_hsmmc_cover_is_closed(host) ? "closed" : "open"); | |
a45c6cb8 MC |
718 | } |
719 | ||
70a3341a | 720 | static DEVICE_ATTR(cover_switch, S_IRUGO, omap_hsmmc_show_cover_switch, NULL); |
a45c6cb8 MC |
721 | |
722 | static ssize_t | |
70a3341a | 723 | omap_hsmmc_show_slot_name(struct device *dev, struct device_attribute *attr, |
a45c6cb8 MC |
724 | char *buf) |
725 | { | |
726 | struct mmc_host *mmc = container_of(dev, struct mmc_host, class_dev); | |
70a3341a | 727 | struct omap_hsmmc_host *host = mmc_priv(mmc); |
a45c6cb8 | 728 | |
191d1f1d | 729 | return sprintf(buf, "%s\n", mmc_slot(host).name); |
a45c6cb8 MC |
730 | } |
731 | ||
70a3341a | 732 | static DEVICE_ATTR(slot_name, S_IRUGO, omap_hsmmc_show_slot_name, NULL); |
a45c6cb8 MC |
733 | |
734 | /* | |
735 | * Configure the response type and send the cmd. | |
736 | */ | |
737 | static void | |
70a3341a | 738 | omap_hsmmc_start_command(struct omap_hsmmc_host *host, struct mmc_command *cmd, |
a45c6cb8 MC |
739 | struct mmc_data *data) |
740 | { | |
741 | int cmdreg = 0, resptype = 0, cmdtype = 0; | |
742 | ||
743 | dev_dbg(mmc_dev(host->mmc), "%s: CMD%d, argument 0x%08x\n", | |
744 | mmc_hostname(host->mmc), cmd->opcode, cmd->arg); | |
745 | host->cmd = cmd; | |
746 | ||
93caf8e6 | 747 | omap_hsmmc_enable_irq(host, cmd); |
a45c6cb8 | 748 | |
4a694dc9 | 749 | host->response_busy = 0; |
a45c6cb8 MC |
750 | if (cmd->flags & MMC_RSP_PRESENT) { |
751 | if (cmd->flags & MMC_RSP_136) | |
752 | resptype = 1; | |
4a694dc9 AH |
753 | else if (cmd->flags & MMC_RSP_BUSY) { |
754 | resptype = 3; | |
755 | host->response_busy = 1; | |
756 | } else | |
a45c6cb8 MC |
757 | resptype = 2; |
758 | } | |
759 | ||
760 | /* | |
761 | * Unlike OMAP1 controller, the cmdtype does not seem to be based on | |
762 | * ac, bc, adtc, bcr. Only commands ending an open ended transfer need | |
763 | * a val of 0x3, rest 0x0. | |
764 | */ | |
765 | if (cmd == host->mrq->stop) | |
766 | cmdtype = 0x3; | |
767 | ||
768 | cmdreg = (cmd->opcode << 24) | (resptype << 16) | (cmdtype << 22); | |
769 | ||
770 | if (data) { | |
771 | cmdreg |= DP_SELECT | MSBS | BCE; | |
772 | if (data->flags & MMC_DATA_READ) | |
773 | cmdreg |= DDIR; | |
774 | else | |
775 | cmdreg &= ~(DDIR); | |
776 | } | |
777 | ||
778 | if (host->use_dma) | |
779 | cmdreg |= DMA_EN; | |
780 | ||
b417577d | 781 | host->req_in_progress = 1; |
4dffd7a2 | 782 | |
a45c6cb8 MC |
783 | OMAP_HSMMC_WRITE(host->base, ARG, cmd->arg); |
784 | OMAP_HSMMC_WRITE(host->base, CMD, cmdreg); | |
785 | } | |
786 | ||
0ccd76d4 | 787 | static int |
70a3341a | 788 | omap_hsmmc_get_dma_dir(struct omap_hsmmc_host *host, struct mmc_data *data) |
0ccd76d4 JY |
789 | { |
790 | if (data->flags & MMC_DATA_WRITE) | |
791 | return DMA_TO_DEVICE; | |
792 | else | |
793 | return DMA_FROM_DEVICE; | |
794 | } | |
795 | ||
b417577d AH |
796 | static void omap_hsmmc_request_done(struct omap_hsmmc_host *host, struct mmc_request *mrq) |
797 | { | |
798 | int dma_ch; | |
799 | ||
800 | spin_lock(&host->irq_lock); | |
801 | host->req_in_progress = 0; | |
802 | dma_ch = host->dma_ch; | |
803 | spin_unlock(&host->irq_lock); | |
804 | ||
805 | omap_hsmmc_disable_irq(host); | |
806 | /* Do not complete the request if DMA is still in progress */ | |
807 | if (mrq->data && host->use_dma && dma_ch != -1) | |
808 | return; | |
809 | host->mrq = NULL; | |
810 | mmc_request_done(host->mmc, mrq); | |
811 | } | |
812 | ||
a45c6cb8 MC |
813 | /* |
814 | * Notify the transfer complete to MMC core | |
815 | */ | |
816 | static void | |
70a3341a | 817 | omap_hsmmc_xfer_done(struct omap_hsmmc_host *host, struct mmc_data *data) |
a45c6cb8 | 818 | { |
4a694dc9 AH |
819 | if (!data) { |
820 | struct mmc_request *mrq = host->mrq; | |
821 | ||
23050103 AH |
822 | /* TC before CC from CMD6 - don't know why, but it happens */ |
823 | if (host->cmd && host->cmd->opcode == 6 && | |
824 | host->response_busy) { | |
825 | host->response_busy = 0; | |
826 | return; | |
827 | } | |
828 | ||
b417577d | 829 | omap_hsmmc_request_done(host, mrq); |
4a694dc9 AH |
830 | return; |
831 | } | |
832 | ||
a45c6cb8 MC |
833 | host->data = NULL; |
834 | ||
a45c6cb8 MC |
835 | if (!data->error) |
836 | data->bytes_xfered += data->blocks * (data->blksz); | |
837 | else | |
838 | data->bytes_xfered = 0; | |
839 | ||
840 | if (!data->stop) { | |
b417577d | 841 | omap_hsmmc_request_done(host, data->mrq); |
a45c6cb8 MC |
842 | return; |
843 | } | |
70a3341a | 844 | omap_hsmmc_start_command(host, data->stop, NULL); |
a45c6cb8 MC |
845 | } |
846 | ||
847 | /* | |
848 | * Notify the core about command completion | |
849 | */ | |
850 | static void | |
70a3341a | 851 | omap_hsmmc_cmd_done(struct omap_hsmmc_host *host, struct mmc_command *cmd) |
a45c6cb8 MC |
852 | { |
853 | host->cmd = NULL; | |
854 | ||
855 | if (cmd->flags & MMC_RSP_PRESENT) { | |
856 | if (cmd->flags & MMC_RSP_136) { | |
857 | /* response type 2 */ | |
858 | cmd->resp[3] = OMAP_HSMMC_READ(host->base, RSP10); | |
859 | cmd->resp[2] = OMAP_HSMMC_READ(host->base, RSP32); | |
860 | cmd->resp[1] = OMAP_HSMMC_READ(host->base, RSP54); | |
861 | cmd->resp[0] = OMAP_HSMMC_READ(host->base, RSP76); | |
862 | } else { | |
863 | /* response types 1, 1b, 3, 4, 5, 6 */ | |
864 | cmd->resp[0] = OMAP_HSMMC_READ(host->base, RSP10); | |
865 | } | |
866 | } | |
b417577d AH |
867 | if ((host->data == NULL && !host->response_busy) || cmd->error) |
868 | omap_hsmmc_request_done(host, cmd->mrq); | |
a45c6cb8 MC |
869 | } |
870 | ||
871 | /* | |
872 | * DMA clean up for command errors | |
873 | */ | |
70a3341a | 874 | static void omap_hsmmc_dma_cleanup(struct omap_hsmmc_host *host, int errno) |
a45c6cb8 | 875 | { |
b417577d AH |
876 | int dma_ch; |
877 | ||
82788ff5 | 878 | host->data->error = errno; |
a45c6cb8 | 879 | |
b417577d AH |
880 | spin_lock(&host->irq_lock); |
881 | dma_ch = host->dma_ch; | |
882 | host->dma_ch = -1; | |
883 | spin_unlock(&host->irq_lock); | |
884 | ||
885 | if (host->use_dma && dma_ch != -1) { | |
a9120c33 PF |
886 | dma_unmap_sg(mmc_dev(host->mmc), host->data->sg, |
887 | host->data->sg_len, | |
70a3341a | 888 | omap_hsmmc_get_dma_dir(host, host->data)); |
b417577d | 889 | omap_free_dma(dma_ch); |
053bf34f | 890 | host->data->host_cookie = 0; |
a45c6cb8 MC |
891 | } |
892 | host->data = NULL; | |
a45c6cb8 MC |
893 | } |
894 | ||
895 | /* | |
896 | * Readable error output | |
897 | */ | |
898 | #ifdef CONFIG_MMC_DEBUG | |
699b958b | 899 | static void omap_hsmmc_dbg_report_irq(struct omap_hsmmc_host *host, u32 status) |
a45c6cb8 MC |
900 | { |
901 | /* --- means reserved bit without definition at documentation */ | |
70a3341a | 902 | static const char *omap_hsmmc_status_bits[] = { |
699b958b AH |
903 | "CC" , "TC" , "BGE", "---", "BWR" , "BRR" , "---" , "---" , |
904 | "CIRQ", "OBI" , "---", "---", "---" , "---" , "---" , "ERRI", | |
905 | "CTO" , "CCRC", "CEB", "CIE", "DTO" , "DCRC", "DEB" , "---" , | |
906 | "ACE" , "---" , "---", "---", "CERR", "BADA", "---" , "---" | |
a45c6cb8 MC |
907 | }; |
908 | char res[256]; | |
909 | char *buf = res; | |
910 | int len, i; | |
911 | ||
912 | len = sprintf(buf, "MMC IRQ 0x%x :", status); | |
913 | buf += len; | |
914 | ||
70a3341a | 915 | for (i = 0; i < ARRAY_SIZE(omap_hsmmc_status_bits); i++) |
a45c6cb8 | 916 | if (status & (1 << i)) { |
70a3341a | 917 | len = sprintf(buf, " %s", omap_hsmmc_status_bits[i]); |
a45c6cb8 MC |
918 | buf += len; |
919 | } | |
920 | ||
921 | dev_dbg(mmc_dev(host->mmc), "%s\n", res); | |
922 | } | |
699b958b AH |
923 | #else |
924 | static inline void omap_hsmmc_dbg_report_irq(struct omap_hsmmc_host *host, | |
925 | u32 status) | |
926 | { | |
927 | } | |
a45c6cb8 MC |
928 | #endif /* CONFIG_MMC_DEBUG */ |
929 | ||
3ebf74b1 JP |
930 | /* |
931 | * MMC controller internal state machines reset | |
932 | * | |
933 | * Used to reset command or data internal state machines, using respectively | |
934 | * SRC or SRD bit of SYSCTL register | |
935 | * Can be called from interrupt context | |
936 | */ | |
70a3341a DK |
937 | static inline void omap_hsmmc_reset_controller_fsm(struct omap_hsmmc_host *host, |
938 | unsigned long bit) | |
3ebf74b1 JP |
939 | { |
940 | unsigned long i = 0; | |
941 | unsigned long limit = (loops_per_jiffy * | |
942 | msecs_to_jiffies(MMC_TIMEOUT_MS)); | |
943 | ||
944 | OMAP_HSMMC_WRITE(host->base, SYSCTL, | |
945 | OMAP_HSMMC_READ(host->base, SYSCTL) | bit); | |
946 | ||
07ad64b6 MC |
947 | /* |
948 | * OMAP4 ES2 and greater has an updated reset logic. | |
949 | * Monitor a 0->1 transition first | |
950 | */ | |
951 | if (mmc_slot(host).features & HSMMC_HAS_UPDATED_RESET) { | |
b432b4b3 | 952 | while ((!(OMAP_HSMMC_READ(host->base, SYSCTL) & bit)) |
07ad64b6 MC |
953 | && (i++ < limit)) |
954 | cpu_relax(); | |
955 | } | |
956 | i = 0; | |
957 | ||
3ebf74b1 JP |
958 | while ((OMAP_HSMMC_READ(host->base, SYSCTL) & bit) && |
959 | (i++ < limit)) | |
960 | cpu_relax(); | |
961 | ||
962 | if (OMAP_HSMMC_READ(host->base, SYSCTL) & bit) | |
963 | dev_err(mmc_dev(host->mmc), | |
964 | "Timeout waiting on controller reset in %s\n", | |
965 | __func__); | |
966 | } | |
a45c6cb8 | 967 | |
b417577d | 968 | static void omap_hsmmc_do_irq(struct omap_hsmmc_host *host, int status) |
a45c6cb8 | 969 | { |
a45c6cb8 | 970 | struct mmc_data *data; |
b417577d AH |
971 | int end_cmd = 0, end_trans = 0; |
972 | ||
973 | if (!host->req_in_progress) { | |
974 | do { | |
975 | OMAP_HSMMC_WRITE(host->base, STAT, status); | |
976 | /* Flush posted write */ | |
977 | status = OMAP_HSMMC_READ(host->base, STAT); | |
978 | } while (status & INT_EN_MASK); | |
979 | return; | |
a45c6cb8 MC |
980 | } |
981 | ||
982 | data = host->data; | |
a45c6cb8 MC |
983 | dev_dbg(mmc_dev(host->mmc), "IRQ Status is %x\n", status); |
984 | ||
985 | if (status & ERR) { | |
699b958b | 986 | omap_hsmmc_dbg_report_irq(host, status); |
a45c6cb8 MC |
987 | if ((status & CMD_TIMEOUT) || |
988 | (status & CMD_CRC)) { | |
989 | if (host->cmd) { | |
990 | if (status & CMD_TIMEOUT) { | |
70a3341a DK |
991 | omap_hsmmc_reset_controller_fsm(host, |
992 | SRC); | |
a45c6cb8 MC |
993 | host->cmd->error = -ETIMEDOUT; |
994 | } else { | |
995 | host->cmd->error = -EILSEQ; | |
996 | } | |
997 | end_cmd = 1; | |
998 | } | |
4a694dc9 AH |
999 | if (host->data || host->response_busy) { |
1000 | if (host->data) | |
70a3341a DK |
1001 | omap_hsmmc_dma_cleanup(host, |
1002 | -ETIMEDOUT); | |
4a694dc9 | 1003 | host->response_busy = 0; |
70a3341a | 1004 | omap_hsmmc_reset_controller_fsm(host, SRD); |
c232f457 | 1005 | } |
a45c6cb8 MC |
1006 | } |
1007 | if ((status & DATA_TIMEOUT) || | |
1008 | (status & DATA_CRC)) { | |
4a694dc9 AH |
1009 | if (host->data || host->response_busy) { |
1010 | int err = (status & DATA_TIMEOUT) ? | |
1011 | -ETIMEDOUT : -EILSEQ; | |
1012 | ||
1013 | if (host->data) | |
70a3341a | 1014 | omap_hsmmc_dma_cleanup(host, err); |
a45c6cb8 | 1015 | else |
4a694dc9 AH |
1016 | host->mrq->cmd->error = err; |
1017 | host->response_busy = 0; | |
70a3341a | 1018 | omap_hsmmc_reset_controller_fsm(host, SRD); |
a45c6cb8 MC |
1019 | end_trans = 1; |
1020 | } | |
1021 | } | |
1022 | if (status & CARD_ERR) { | |
1023 | dev_dbg(mmc_dev(host->mmc), | |
1024 | "Ignoring card err CMD%d\n", host->cmd->opcode); | |
1025 | if (host->cmd) | |
1026 | end_cmd = 1; | |
1027 | if (host->data) | |
1028 | end_trans = 1; | |
1029 | } | |
1030 | } | |
1031 | ||
1032 | OMAP_HSMMC_WRITE(host->base, STAT, status); | |
1033 | ||
a8fe29d8 | 1034 | if (end_cmd || ((status & CC) && host->cmd)) |
70a3341a | 1035 | omap_hsmmc_cmd_done(host, host->cmd); |
0a40e647 | 1036 | if ((end_trans || (status & TC)) && host->mrq) |
70a3341a | 1037 | omap_hsmmc_xfer_done(host, data); |
b417577d | 1038 | } |
a45c6cb8 | 1039 | |
b417577d AH |
1040 | /* |
1041 | * MMC controller IRQ handler | |
1042 | */ | |
1043 | static irqreturn_t omap_hsmmc_irq(int irq, void *dev_id) | |
1044 | { | |
1045 | struct omap_hsmmc_host *host = dev_id; | |
1046 | int status; | |
1047 | ||
1048 | status = OMAP_HSMMC_READ(host->base, STAT); | |
1049 | do { | |
1050 | omap_hsmmc_do_irq(host, status); | |
1051 | /* Flush posted write */ | |
1052 | status = OMAP_HSMMC_READ(host->base, STAT); | |
1053 | } while (status & INT_EN_MASK); | |
4dffd7a2 | 1054 | |
a45c6cb8 MC |
1055 | return IRQ_HANDLED; |
1056 | } | |
1057 | ||
70a3341a | 1058 | static void set_sd_bus_power(struct omap_hsmmc_host *host) |
e13bb300 AH |
1059 | { |
1060 | unsigned long i; | |
1061 | ||
1062 | OMAP_HSMMC_WRITE(host->base, HCTL, | |
1063 | OMAP_HSMMC_READ(host->base, HCTL) | SDBP); | |
1064 | for (i = 0; i < loops_per_jiffy; i++) { | |
1065 | if (OMAP_HSMMC_READ(host->base, HCTL) & SDBP) | |
1066 | break; | |
1067 | cpu_relax(); | |
1068 | } | |
1069 | } | |
1070 | ||
a45c6cb8 | 1071 | /* |
eb250826 DB |
1072 | * Switch MMC interface voltage ... only relevant for MMC1. |
1073 | * | |
1074 | * MMC2 and MMC3 use fixed 1.8V levels, and maybe a transceiver. | |
1075 | * The MMC2 transceiver controls are used instead of DAT4..DAT7. | |
1076 | * Some chips, like eMMC ones, use internal transceivers. | |
a45c6cb8 | 1077 | */ |
70a3341a | 1078 | static int omap_hsmmc_switch_opcond(struct omap_hsmmc_host *host, int vdd) |
a45c6cb8 MC |
1079 | { |
1080 | u32 reg_val = 0; | |
1081 | int ret; | |
1082 | ||
1083 | /* Disable the clocks */ | |
fa4aa2d4 | 1084 | pm_runtime_put_sync(host->dev); |
2bec0893 AH |
1085 | if (host->got_dbclk) |
1086 | clk_disable(host->dbclk); | |
a45c6cb8 MC |
1087 | |
1088 | /* Turn the power off */ | |
1089 | ret = mmc_slot(host).set_power(host->dev, host->slot_id, 0, 0); | |
a45c6cb8 MC |
1090 | |
1091 | /* Turn the power ON with given VDD 1.8 or 3.0v */ | |
2bec0893 AH |
1092 | if (!ret) |
1093 | ret = mmc_slot(host).set_power(host->dev, host->slot_id, 1, | |
1094 | vdd); | |
fa4aa2d4 | 1095 | pm_runtime_get_sync(host->dev); |
2bec0893 AH |
1096 | if (host->got_dbclk) |
1097 | clk_enable(host->dbclk); | |
1098 | ||
a45c6cb8 MC |
1099 | if (ret != 0) |
1100 | goto err; | |
1101 | ||
a45c6cb8 MC |
1102 | OMAP_HSMMC_WRITE(host->base, HCTL, |
1103 | OMAP_HSMMC_READ(host->base, HCTL) & SDVSCLR); | |
1104 | reg_val = OMAP_HSMMC_READ(host->base, HCTL); | |
eb250826 | 1105 | |
a45c6cb8 MC |
1106 | /* |
1107 | * If a MMC dual voltage card is detected, the set_ios fn calls | |
1108 | * this fn with VDD bit set for 1.8V. Upon card removal from the | |
70a3341a | 1109 | * slot, omap_hsmmc_set_ios sets the VDD back to 3V on MMC_POWER_OFF. |
a45c6cb8 | 1110 | * |
eb250826 DB |
1111 | * Cope with a bit of slop in the range ... per data sheets: |
1112 | * - "1.8V" for vdds_mmc1/vdds_mmc1a can be up to 2.45V max, | |
1113 | * but recommended values are 1.71V to 1.89V | |
1114 | * - "3.0V" for vdds_mmc1/vdds_mmc1a can be up to 3.5V max, | |
1115 | * but recommended values are 2.7V to 3.3V | |
1116 | * | |
1117 | * Board setup code shouldn't permit anything very out-of-range. | |
1118 | * TWL4030-family VMMC1 and VSIM regulators are fine (avoiding the | |
1119 | * middle range) but VSIM can't power DAT4..DAT7 at more than 3V. | |
a45c6cb8 | 1120 | */ |
eb250826 | 1121 | if ((1 << vdd) <= MMC_VDD_23_24) |
a45c6cb8 | 1122 | reg_val |= SDVS18; |
eb250826 DB |
1123 | else |
1124 | reg_val |= SDVS30; | |
a45c6cb8 MC |
1125 | |
1126 | OMAP_HSMMC_WRITE(host->base, HCTL, reg_val); | |
e13bb300 | 1127 | set_sd_bus_power(host); |
a45c6cb8 MC |
1128 | |
1129 | return 0; | |
1130 | err: | |
1131 | dev_dbg(mmc_dev(host->mmc), "Unable to switch operating voltage\n"); | |
1132 | return ret; | |
1133 | } | |
1134 | ||
b62f6228 AH |
1135 | /* Protect the card while the cover is open */ |
1136 | static void omap_hsmmc_protect_card(struct omap_hsmmc_host *host) | |
1137 | { | |
1138 | if (!mmc_slot(host).get_cover_state) | |
1139 | return; | |
1140 | ||
1141 | host->reqs_blocked = 0; | |
1142 | if (mmc_slot(host).get_cover_state(host->dev, host->slot_id)) { | |
1143 | if (host->protect_card) { | |
2cecdf00 | 1144 | dev_info(host->dev, "%s: cover is closed, " |
b62f6228 AH |
1145 | "card is now accessible\n", |
1146 | mmc_hostname(host->mmc)); | |
1147 | host->protect_card = 0; | |
1148 | } | |
1149 | } else { | |
1150 | if (!host->protect_card) { | |
2cecdf00 | 1151 | dev_info(host->dev, "%s: cover is open, " |
b62f6228 AH |
1152 | "card is now inaccessible\n", |
1153 | mmc_hostname(host->mmc)); | |
1154 | host->protect_card = 1; | |
1155 | } | |
1156 | } | |
1157 | } | |
1158 | ||
a45c6cb8 | 1159 | /* |
7efab4f3 | 1160 | * irq handler to notify the core about card insertion/removal |
a45c6cb8 | 1161 | */ |
7efab4f3 | 1162 | static irqreturn_t omap_hsmmc_detect(int irq, void *dev_id) |
a45c6cb8 | 1163 | { |
7efab4f3 | 1164 | struct omap_hsmmc_host *host = dev_id; |
249d0fa9 | 1165 | struct omap_mmc_slot_data *slot = &mmc_slot(host); |
a6b2240d AH |
1166 | int carddetect; |
1167 | ||
1168 | if (host->suspended) | |
7efab4f3 | 1169 | return IRQ_HANDLED; |
a6b2240d AH |
1170 | |
1171 | sysfs_notify(&host->mmc->class_dev.kobj, NULL, "cover_switch"); | |
249d0fa9 | 1172 | |
191d1f1d | 1173 | if (slot->card_detect) |
db0fefc5 | 1174 | carddetect = slot->card_detect(host->dev, host->slot_id); |
b62f6228 AH |
1175 | else { |
1176 | omap_hsmmc_protect_card(host); | |
a6b2240d | 1177 | carddetect = -ENOSYS; |
b62f6228 | 1178 | } |
a45c6cb8 | 1179 | |
cdeebadd | 1180 | if (carddetect) |
a45c6cb8 | 1181 | mmc_detect_change(host->mmc, (HZ * 200) / 1000); |
cdeebadd | 1182 | else |
a45c6cb8 | 1183 | mmc_detect_change(host->mmc, (HZ * 50) / 1000); |
a45c6cb8 MC |
1184 | return IRQ_HANDLED; |
1185 | } | |
1186 | ||
70a3341a | 1187 | static int omap_hsmmc_get_dma_sync_dev(struct omap_hsmmc_host *host, |
0ccd76d4 JY |
1188 | struct mmc_data *data) |
1189 | { | |
1190 | int sync_dev; | |
1191 | ||
f3e2f1dd GI |
1192 | if (data->flags & MMC_DATA_WRITE) |
1193 | sync_dev = host->dma_line_tx; | |
1194 | else | |
1195 | sync_dev = host->dma_line_rx; | |
0ccd76d4 JY |
1196 | return sync_dev; |
1197 | } | |
1198 | ||
70a3341a | 1199 | static void omap_hsmmc_config_dma_params(struct omap_hsmmc_host *host, |
0ccd76d4 JY |
1200 | struct mmc_data *data, |
1201 | struct scatterlist *sgl) | |
1202 | { | |
1203 | int blksz, nblk, dma_ch; | |
1204 | ||
1205 | dma_ch = host->dma_ch; | |
1206 | if (data->flags & MMC_DATA_WRITE) { | |
1207 | omap_set_dma_dest_params(dma_ch, 0, OMAP_DMA_AMODE_CONSTANT, | |
1208 | (host->mapbase + OMAP_HSMMC_DATA), 0, 0); | |
1209 | omap_set_dma_src_params(dma_ch, 0, OMAP_DMA_AMODE_POST_INC, | |
1210 | sg_dma_address(sgl), 0, 0); | |
1211 | } else { | |
1212 | omap_set_dma_src_params(dma_ch, 0, OMAP_DMA_AMODE_CONSTANT, | |
191d1f1d | 1213 | (host->mapbase + OMAP_HSMMC_DATA), 0, 0); |
0ccd76d4 JY |
1214 | omap_set_dma_dest_params(dma_ch, 0, OMAP_DMA_AMODE_POST_INC, |
1215 | sg_dma_address(sgl), 0, 0); | |
1216 | } | |
1217 | ||
1218 | blksz = host->data->blksz; | |
1219 | nblk = sg_dma_len(sgl) / blksz; | |
1220 | ||
1221 | omap_set_dma_transfer_params(dma_ch, OMAP_DMA_DATA_TYPE_S32, | |
1222 | blksz / 4, nblk, OMAP_DMA_SYNC_FRAME, | |
70a3341a | 1223 | omap_hsmmc_get_dma_sync_dev(host, data), |
0ccd76d4 JY |
1224 | !(data->flags & MMC_DATA_WRITE)); |
1225 | ||
1226 | omap_start_dma(dma_ch); | |
1227 | } | |
1228 | ||
a45c6cb8 MC |
1229 | /* |
1230 | * DMA call back function | |
1231 | */ | |
b417577d | 1232 | static void omap_hsmmc_dma_cb(int lch, u16 ch_status, void *cb_data) |
a45c6cb8 | 1233 | { |
b417577d | 1234 | struct omap_hsmmc_host *host = cb_data; |
770d7432 | 1235 | struct mmc_data *data; |
b417577d | 1236 | int dma_ch, req_in_progress; |
a45c6cb8 | 1237 | |
f3584e5e V |
1238 | if (!(ch_status & OMAP_DMA_BLOCK_IRQ)) { |
1239 | dev_warn(mmc_dev(host->mmc), "unexpected dma status %x\n", | |
1240 | ch_status); | |
1241 | return; | |
1242 | } | |
a45c6cb8 | 1243 | |
b417577d AH |
1244 | spin_lock(&host->irq_lock); |
1245 | if (host->dma_ch < 0) { | |
1246 | spin_unlock(&host->irq_lock); | |
a45c6cb8 | 1247 | return; |
b417577d | 1248 | } |
a45c6cb8 | 1249 | |
770d7432 | 1250 | data = host->mrq->data; |
0ccd76d4 JY |
1251 | host->dma_sg_idx++; |
1252 | if (host->dma_sg_idx < host->dma_len) { | |
1253 | /* Fire up the next transfer. */ | |
b417577d AH |
1254 | omap_hsmmc_config_dma_params(host, data, |
1255 | data->sg + host->dma_sg_idx); | |
1256 | spin_unlock(&host->irq_lock); | |
0ccd76d4 JY |
1257 | return; |
1258 | } | |
1259 | ||
9782aff8 PF |
1260 | if (!data->host_cookie) |
1261 | dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len, | |
1262 | omap_hsmmc_get_dma_dir(host, data)); | |
b417577d AH |
1263 | |
1264 | req_in_progress = host->req_in_progress; | |
1265 | dma_ch = host->dma_ch; | |
a45c6cb8 | 1266 | host->dma_ch = -1; |
b417577d AH |
1267 | spin_unlock(&host->irq_lock); |
1268 | ||
1269 | omap_free_dma(dma_ch); | |
1270 | ||
1271 | /* If DMA has finished after TC, complete the request */ | |
1272 | if (!req_in_progress) { | |
1273 | struct mmc_request *mrq = host->mrq; | |
1274 | ||
1275 | host->mrq = NULL; | |
1276 | mmc_request_done(host->mmc, mrq); | |
1277 | } | |
a45c6cb8 MC |
1278 | } |
1279 | ||
9782aff8 PF |
1280 | static int omap_hsmmc_pre_dma_transfer(struct omap_hsmmc_host *host, |
1281 | struct mmc_data *data, | |
1282 | struct omap_hsmmc_next *next) | |
1283 | { | |
1284 | int dma_len; | |
1285 | ||
1286 | if (!next && data->host_cookie && | |
1287 | data->host_cookie != host->next_data.cookie) { | |
2cecdf00 | 1288 | dev_warn(host->dev, "[%s] invalid cookie: data->host_cookie %d" |
9782aff8 PF |
1289 | " host->next_data.cookie %d\n", |
1290 | __func__, data->host_cookie, host->next_data.cookie); | |
1291 | data->host_cookie = 0; | |
1292 | } | |
1293 | ||
1294 | /* Check if next job is already prepared */ | |
1295 | if (next || | |
1296 | (!next && data->host_cookie != host->next_data.cookie)) { | |
1297 | dma_len = dma_map_sg(mmc_dev(host->mmc), data->sg, | |
1298 | data->sg_len, | |
1299 | omap_hsmmc_get_dma_dir(host, data)); | |
1300 | ||
1301 | } else { | |
1302 | dma_len = host->next_data.dma_len; | |
1303 | host->next_data.dma_len = 0; | |
1304 | } | |
1305 | ||
1306 | ||
1307 | if (dma_len == 0) | |
1308 | return -EINVAL; | |
1309 | ||
1310 | if (next) { | |
1311 | next->dma_len = dma_len; | |
1312 | data->host_cookie = ++next->cookie < 0 ? 1 : next->cookie; | |
1313 | } else | |
1314 | host->dma_len = dma_len; | |
1315 | ||
1316 | return 0; | |
1317 | } | |
1318 | ||
a45c6cb8 MC |
1319 | /* |
1320 | * Routine to configure and start DMA for the MMC card | |
1321 | */ | |
70a3341a DK |
1322 | static int omap_hsmmc_start_dma_transfer(struct omap_hsmmc_host *host, |
1323 | struct mmc_request *req) | |
a45c6cb8 | 1324 | { |
b417577d | 1325 | int dma_ch = 0, ret = 0, i; |
a45c6cb8 MC |
1326 | struct mmc_data *data = req->data; |
1327 | ||
0ccd76d4 | 1328 | /* Sanity check: all the SG entries must be aligned by block size. */ |
a3f406f8 | 1329 | for (i = 0; i < data->sg_len; i++) { |
0ccd76d4 JY |
1330 | struct scatterlist *sgl; |
1331 | ||
1332 | sgl = data->sg + i; | |
1333 | if (sgl->length % data->blksz) | |
1334 | return -EINVAL; | |
1335 | } | |
1336 | if ((data->blksz % 4) != 0) | |
1337 | /* REVISIT: The MMC buffer increments only when MSB is written. | |
1338 | * Return error for blksz which is non multiple of four. | |
1339 | */ | |
1340 | return -EINVAL; | |
1341 | ||
b417577d | 1342 | BUG_ON(host->dma_ch != -1); |
a45c6cb8 | 1343 | |
70a3341a DK |
1344 | ret = omap_request_dma(omap_hsmmc_get_dma_sync_dev(host, data), |
1345 | "MMC/SD", omap_hsmmc_dma_cb, host, &dma_ch); | |
a45c6cb8 | 1346 | if (ret != 0) { |
0ccd76d4 | 1347 | dev_err(mmc_dev(host->mmc), |
a45c6cb8 MC |
1348 | "%s: omap_request_dma() failed with %d\n", |
1349 | mmc_hostname(host->mmc), ret); | |
1350 | return ret; | |
1351 | } | |
9782aff8 PF |
1352 | ret = omap_hsmmc_pre_dma_transfer(host, data, NULL); |
1353 | if (ret) | |
1354 | return ret; | |
a45c6cb8 | 1355 | |
a45c6cb8 | 1356 | host->dma_ch = dma_ch; |
0ccd76d4 | 1357 | host->dma_sg_idx = 0; |
a45c6cb8 | 1358 | |
70a3341a | 1359 | omap_hsmmc_config_dma_params(host, data, data->sg); |
a45c6cb8 | 1360 | |
a45c6cb8 MC |
1361 | return 0; |
1362 | } | |
1363 | ||
70a3341a | 1364 | static void set_data_timeout(struct omap_hsmmc_host *host, |
e2bf08d6 AH |
1365 | unsigned int timeout_ns, |
1366 | unsigned int timeout_clks) | |
a45c6cb8 MC |
1367 | { |
1368 | unsigned int timeout, cycle_ns; | |
1369 | uint32_t reg, clkd, dto = 0; | |
1370 | ||
1371 | reg = OMAP_HSMMC_READ(host->base, SYSCTL); | |
1372 | clkd = (reg & CLKD_MASK) >> CLKD_SHIFT; | |
1373 | if (clkd == 0) | |
1374 | clkd = 1; | |
1375 | ||
1376 | cycle_ns = 1000000000 / (clk_get_rate(host->fclk) / clkd); | |
e2bf08d6 AH |
1377 | timeout = timeout_ns / cycle_ns; |
1378 | timeout += timeout_clks; | |
a45c6cb8 MC |
1379 | if (timeout) { |
1380 | while ((timeout & 0x80000000) == 0) { | |
1381 | dto += 1; | |
1382 | timeout <<= 1; | |
1383 | } | |
1384 | dto = 31 - dto; | |
1385 | timeout <<= 1; | |
1386 | if (timeout && dto) | |
1387 | dto += 1; | |
1388 | if (dto >= 13) | |
1389 | dto -= 13; | |
1390 | else | |
1391 | dto = 0; | |
1392 | if (dto > 14) | |
1393 | dto = 14; | |
1394 | } | |
1395 | ||
1396 | reg &= ~DTO_MASK; | |
1397 | reg |= dto << DTO_SHIFT; | |
1398 | OMAP_HSMMC_WRITE(host->base, SYSCTL, reg); | |
1399 | } | |
1400 | ||
1401 | /* | |
1402 | * Configure block length for MMC/SD cards and initiate the transfer. | |
1403 | */ | |
1404 | static int | |
70a3341a | 1405 | omap_hsmmc_prepare_data(struct omap_hsmmc_host *host, struct mmc_request *req) |
a45c6cb8 MC |
1406 | { |
1407 | int ret; | |
1408 | host->data = req->data; | |
1409 | ||
1410 | if (req->data == NULL) { | |
a45c6cb8 | 1411 | OMAP_HSMMC_WRITE(host->base, BLK, 0); |
e2bf08d6 AH |
1412 | /* |
1413 | * Set an arbitrary 100ms data timeout for commands with | |
1414 | * busy signal. | |
1415 | */ | |
1416 | if (req->cmd->flags & MMC_RSP_BUSY) | |
1417 | set_data_timeout(host, 100000000U, 0); | |
a45c6cb8 MC |
1418 | return 0; |
1419 | } | |
1420 | ||
1421 | OMAP_HSMMC_WRITE(host->base, BLK, (req->data->blksz) | |
1422 | | (req->data->blocks << 16)); | |
e2bf08d6 | 1423 | set_data_timeout(host, req->data->timeout_ns, req->data->timeout_clks); |
a45c6cb8 | 1424 | |
a45c6cb8 | 1425 | if (host->use_dma) { |
70a3341a | 1426 | ret = omap_hsmmc_start_dma_transfer(host, req); |
a45c6cb8 MC |
1427 | if (ret != 0) { |
1428 | dev_dbg(mmc_dev(host->mmc), "MMC start dma failure\n"); | |
1429 | return ret; | |
1430 | } | |
1431 | } | |
1432 | return 0; | |
1433 | } | |
1434 | ||
9782aff8 PF |
1435 | static void omap_hsmmc_post_req(struct mmc_host *mmc, struct mmc_request *mrq, |
1436 | int err) | |
1437 | { | |
1438 | struct omap_hsmmc_host *host = mmc_priv(mmc); | |
1439 | struct mmc_data *data = mrq->data; | |
1440 | ||
1441 | if (host->use_dma) { | |
053bf34f PF |
1442 | if (data->host_cookie) |
1443 | dma_unmap_sg(mmc_dev(host->mmc), data->sg, | |
1444 | data->sg_len, | |
1445 | omap_hsmmc_get_dma_dir(host, data)); | |
9782aff8 PF |
1446 | data->host_cookie = 0; |
1447 | } | |
1448 | } | |
1449 | ||
1450 | static void omap_hsmmc_pre_req(struct mmc_host *mmc, struct mmc_request *mrq, | |
1451 | bool is_first_req) | |
1452 | { | |
1453 | struct omap_hsmmc_host *host = mmc_priv(mmc); | |
1454 | ||
1455 | if (mrq->data->host_cookie) { | |
1456 | mrq->data->host_cookie = 0; | |
1457 | return ; | |
1458 | } | |
1459 | ||
1460 | if (host->use_dma) | |
1461 | if (omap_hsmmc_pre_dma_transfer(host, mrq->data, | |
1462 | &host->next_data)) | |
1463 | mrq->data->host_cookie = 0; | |
1464 | } | |
1465 | ||
a45c6cb8 MC |
1466 | /* |
1467 | * Request function. for read/write operation | |
1468 | */ | |
70a3341a | 1469 | static void omap_hsmmc_request(struct mmc_host *mmc, struct mmc_request *req) |
a45c6cb8 | 1470 | { |
70a3341a | 1471 | struct omap_hsmmc_host *host = mmc_priv(mmc); |
a3f406f8 | 1472 | int err; |
a45c6cb8 | 1473 | |
b417577d AH |
1474 | BUG_ON(host->req_in_progress); |
1475 | BUG_ON(host->dma_ch != -1); | |
1476 | if (host->protect_card) { | |
1477 | if (host->reqs_blocked < 3) { | |
1478 | /* | |
1479 | * Ensure the controller is left in a consistent | |
1480 | * state by resetting the command and data state | |
1481 | * machines. | |
1482 | */ | |
1483 | omap_hsmmc_reset_controller_fsm(host, SRD); | |
1484 | omap_hsmmc_reset_controller_fsm(host, SRC); | |
1485 | host->reqs_blocked += 1; | |
1486 | } | |
1487 | req->cmd->error = -EBADF; | |
1488 | if (req->data) | |
1489 | req->data->error = -EBADF; | |
1490 | req->cmd->retries = 0; | |
1491 | mmc_request_done(mmc, req); | |
1492 | return; | |
1493 | } else if (host->reqs_blocked) | |
1494 | host->reqs_blocked = 0; | |
a45c6cb8 MC |
1495 | WARN_ON(host->mrq != NULL); |
1496 | host->mrq = req; | |
70a3341a | 1497 | err = omap_hsmmc_prepare_data(host, req); |
a3f406f8 JL |
1498 | if (err) { |
1499 | req->cmd->error = err; | |
1500 | if (req->data) | |
1501 | req->data->error = err; | |
1502 | host->mrq = NULL; | |
1503 | mmc_request_done(mmc, req); | |
1504 | return; | |
1505 | } | |
1506 | ||
70a3341a | 1507 | omap_hsmmc_start_command(host, req->cmd, req->data); |
a45c6cb8 MC |
1508 | } |
1509 | ||
a45c6cb8 | 1510 | /* Routine to configure clock values. Exposed API to core */ |
70a3341a | 1511 | static void omap_hsmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) |
a45c6cb8 | 1512 | { |
70a3341a | 1513 | struct omap_hsmmc_host *host = mmc_priv(mmc); |
a3621465 | 1514 | int do_send_init_stream = 0; |
a45c6cb8 | 1515 | |
fa4aa2d4 | 1516 | pm_runtime_get_sync(host->dev); |
5e2ea617 | 1517 | |
a3621465 AH |
1518 | if (ios->power_mode != host->power_mode) { |
1519 | switch (ios->power_mode) { | |
1520 | case MMC_POWER_OFF: | |
1521 | mmc_slot(host).set_power(host->dev, host->slot_id, | |
1522 | 0, 0); | |
623821f7 | 1523 | host->vdd = 0; |
a3621465 AH |
1524 | break; |
1525 | case MMC_POWER_UP: | |
1526 | mmc_slot(host).set_power(host->dev, host->slot_id, | |
1527 | 1, ios->vdd); | |
623821f7 | 1528 | host->vdd = ios->vdd; |
a3621465 AH |
1529 | break; |
1530 | case MMC_POWER_ON: | |
1531 | do_send_init_stream = 1; | |
1532 | break; | |
1533 | } | |
1534 | host->power_mode = ios->power_mode; | |
a45c6cb8 MC |
1535 | } |
1536 | ||
dd498eff DK |
1537 | /* FIXME: set registers based only on changes to ios */ |
1538 | ||
3796fb8a | 1539 | omap_hsmmc_set_bus_width(host); |
a45c6cb8 | 1540 | |
4621d5f8 | 1541 | if (host->pdata->controller_flags & OMAP_HSMMC_SUPPORTS_DUAL_VOLT) { |
eb250826 DB |
1542 | /* Only MMC1 can interface at 3V without some flavor |
1543 | * of external transceiver; but they all handle 1.8V. | |
1544 | */ | |
a45c6cb8 | 1545 | if ((OMAP_HSMMC_READ(host->base, HCTL) & SDVSDET) && |
1f84b71b RN |
1546 | (ios->vdd == DUAL_VOLT_OCR_BIT) && |
1547 | /* | |
1548 | * With pbias cell programming missing, this | |
1549 | * can't be allowed when booting with device | |
1550 | * tree. | |
1551 | */ | |
1552 | (!of_have_populated_dt())) { | |
a45c6cb8 MC |
1553 | /* |
1554 | * The mmc_select_voltage fn of the core does | |
1555 | * not seem to set the power_mode to | |
1556 | * MMC_POWER_UP upon recalculating the voltage. | |
1557 | * vdd 1.8v. | |
1558 | */ | |
70a3341a DK |
1559 | if (omap_hsmmc_switch_opcond(host, ios->vdd) != 0) |
1560 | dev_dbg(mmc_dev(host->mmc), | |
a45c6cb8 MC |
1561 | "Switch operation failed\n"); |
1562 | } | |
1563 | } | |
1564 | ||
5934df2f | 1565 | omap_hsmmc_set_clock(host); |
a45c6cb8 | 1566 | |
a3621465 | 1567 | if (do_send_init_stream) |
a45c6cb8 MC |
1568 | send_init_stream(host); |
1569 | ||
3796fb8a | 1570 | omap_hsmmc_set_bus_mode(host); |
5e2ea617 | 1571 | |
fa4aa2d4 | 1572 | pm_runtime_put_autosuspend(host->dev); |
a45c6cb8 MC |
1573 | } |
1574 | ||
1575 | static int omap_hsmmc_get_cd(struct mmc_host *mmc) | |
1576 | { | |
70a3341a | 1577 | struct omap_hsmmc_host *host = mmc_priv(mmc); |
a45c6cb8 | 1578 | |
191d1f1d | 1579 | if (!mmc_slot(host).card_detect) |
a45c6cb8 | 1580 | return -ENOSYS; |
db0fefc5 | 1581 | return mmc_slot(host).card_detect(host->dev, host->slot_id); |
a45c6cb8 MC |
1582 | } |
1583 | ||
1584 | static int omap_hsmmc_get_ro(struct mmc_host *mmc) | |
1585 | { | |
70a3341a | 1586 | struct omap_hsmmc_host *host = mmc_priv(mmc); |
a45c6cb8 | 1587 | |
191d1f1d | 1588 | if (!mmc_slot(host).get_ro) |
a45c6cb8 | 1589 | return -ENOSYS; |
191d1f1d | 1590 | return mmc_slot(host).get_ro(host->dev, 0); |
a45c6cb8 MC |
1591 | } |
1592 | ||
4816858c GI |
1593 | static void omap_hsmmc_init_card(struct mmc_host *mmc, struct mmc_card *card) |
1594 | { | |
1595 | struct omap_hsmmc_host *host = mmc_priv(mmc); | |
1596 | ||
1597 | if (mmc_slot(host).init_card) | |
1598 | mmc_slot(host).init_card(card); | |
1599 | } | |
1600 | ||
70a3341a | 1601 | static void omap_hsmmc_conf_bus_power(struct omap_hsmmc_host *host) |
1b331e69 KK |
1602 | { |
1603 | u32 hctl, capa, value; | |
1604 | ||
1605 | /* Only MMC1 supports 3.0V */ | |
4621d5f8 | 1606 | if (host->pdata->controller_flags & OMAP_HSMMC_SUPPORTS_DUAL_VOLT) { |
1b331e69 KK |
1607 | hctl = SDVS30; |
1608 | capa = VS30 | VS18; | |
1609 | } else { | |
1610 | hctl = SDVS18; | |
1611 | capa = VS18; | |
1612 | } | |
1613 | ||
1614 | value = OMAP_HSMMC_READ(host->base, HCTL) & ~SDVS_MASK; | |
1615 | OMAP_HSMMC_WRITE(host->base, HCTL, value | hctl); | |
1616 | ||
1617 | value = OMAP_HSMMC_READ(host->base, CAPA); | |
1618 | OMAP_HSMMC_WRITE(host->base, CAPA, value | capa); | |
1619 | ||
1620 | /* Set the controller to AUTO IDLE mode */ | |
1621 | value = OMAP_HSMMC_READ(host->base, SYSCONFIG); | |
1622 | OMAP_HSMMC_WRITE(host->base, SYSCONFIG, value | AUTOIDLE); | |
1623 | ||
1624 | /* Set SD bus power bit */ | |
e13bb300 | 1625 | set_sd_bus_power(host); |
1b331e69 KK |
1626 | } |
1627 | ||
70a3341a | 1628 | static int omap_hsmmc_enable_fclk(struct mmc_host *mmc) |
dd498eff | 1629 | { |
70a3341a | 1630 | struct omap_hsmmc_host *host = mmc_priv(mmc); |
dd498eff | 1631 | |
fa4aa2d4 B |
1632 | pm_runtime_get_sync(host->dev); |
1633 | ||
dd498eff DK |
1634 | return 0; |
1635 | } | |
1636 | ||
907d2e7c | 1637 | static int omap_hsmmc_disable_fclk(struct mmc_host *mmc) |
dd498eff | 1638 | { |
70a3341a | 1639 | struct omap_hsmmc_host *host = mmc_priv(mmc); |
dd498eff | 1640 | |
fa4aa2d4 B |
1641 | pm_runtime_mark_last_busy(host->dev); |
1642 | pm_runtime_put_autosuspend(host->dev); | |
1643 | ||
dd498eff DK |
1644 | return 0; |
1645 | } | |
1646 | ||
70a3341a DK |
1647 | static const struct mmc_host_ops omap_hsmmc_ops = { |
1648 | .enable = omap_hsmmc_enable_fclk, | |
1649 | .disable = omap_hsmmc_disable_fclk, | |
9782aff8 PF |
1650 | .post_req = omap_hsmmc_post_req, |
1651 | .pre_req = omap_hsmmc_pre_req, | |
70a3341a DK |
1652 | .request = omap_hsmmc_request, |
1653 | .set_ios = omap_hsmmc_set_ios, | |
dd498eff DK |
1654 | .get_cd = omap_hsmmc_get_cd, |
1655 | .get_ro = omap_hsmmc_get_ro, | |
4816858c | 1656 | .init_card = omap_hsmmc_init_card, |
dd498eff DK |
1657 | /* NYET -- enable_sdio_irq */ |
1658 | }; | |
1659 | ||
d900f712 DK |
1660 | #ifdef CONFIG_DEBUG_FS |
1661 | ||
70a3341a | 1662 | static int omap_hsmmc_regs_show(struct seq_file *s, void *data) |
d900f712 DK |
1663 | { |
1664 | struct mmc_host *mmc = s->private; | |
70a3341a | 1665 | struct omap_hsmmc_host *host = mmc_priv(mmc); |
11dd62a7 DK |
1666 | int context_loss = 0; |
1667 | ||
70a3341a DK |
1668 | if (host->pdata->get_context_loss_count) |
1669 | context_loss = host->pdata->get_context_loss_count(host->dev); | |
d900f712 | 1670 | |
907d2e7c AH |
1671 | seq_printf(s, "mmc%d:\n ctx_loss:\t%d:%d\n\nregs:\n", |
1672 | mmc->index, host->context_loss, context_loss); | |
5e2ea617 | 1673 | |
7a8c2cef | 1674 | if (host->suspended) { |
dd498eff DK |
1675 | seq_printf(s, "host suspended, can't read registers\n"); |
1676 | return 0; | |
1677 | } | |
1678 | ||
fa4aa2d4 | 1679 | pm_runtime_get_sync(host->dev); |
d900f712 DK |
1680 | |
1681 | seq_printf(s, "SYSCONFIG:\t0x%08x\n", | |
1682 | OMAP_HSMMC_READ(host->base, SYSCONFIG)); | |
1683 | seq_printf(s, "CON:\t\t0x%08x\n", | |
1684 | OMAP_HSMMC_READ(host->base, CON)); | |
1685 | seq_printf(s, "HCTL:\t\t0x%08x\n", | |
1686 | OMAP_HSMMC_READ(host->base, HCTL)); | |
1687 | seq_printf(s, "SYSCTL:\t\t0x%08x\n", | |
1688 | OMAP_HSMMC_READ(host->base, SYSCTL)); | |
1689 | seq_printf(s, "IE:\t\t0x%08x\n", | |
1690 | OMAP_HSMMC_READ(host->base, IE)); | |
1691 | seq_printf(s, "ISE:\t\t0x%08x\n", | |
1692 | OMAP_HSMMC_READ(host->base, ISE)); | |
1693 | seq_printf(s, "CAPA:\t\t0x%08x\n", | |
1694 | OMAP_HSMMC_READ(host->base, CAPA)); | |
5e2ea617 | 1695 | |
fa4aa2d4 B |
1696 | pm_runtime_mark_last_busy(host->dev); |
1697 | pm_runtime_put_autosuspend(host->dev); | |
dd498eff | 1698 | |
d900f712 DK |
1699 | return 0; |
1700 | } | |
1701 | ||
70a3341a | 1702 | static int omap_hsmmc_regs_open(struct inode *inode, struct file *file) |
d900f712 | 1703 | { |
70a3341a | 1704 | return single_open(file, omap_hsmmc_regs_show, inode->i_private); |
d900f712 DK |
1705 | } |
1706 | ||
1707 | static const struct file_operations mmc_regs_fops = { | |
70a3341a | 1708 | .open = omap_hsmmc_regs_open, |
d900f712 DK |
1709 | .read = seq_read, |
1710 | .llseek = seq_lseek, | |
1711 | .release = single_release, | |
1712 | }; | |
1713 | ||
70a3341a | 1714 | static void omap_hsmmc_debugfs(struct mmc_host *mmc) |
d900f712 DK |
1715 | { |
1716 | if (mmc->debugfs_root) | |
1717 | debugfs_create_file("regs", S_IRUSR, mmc->debugfs_root, | |
1718 | mmc, &mmc_regs_fops); | |
1719 | } | |
1720 | ||
1721 | #else | |
1722 | ||
70a3341a | 1723 | static void omap_hsmmc_debugfs(struct mmc_host *mmc) |
d900f712 DK |
1724 | { |
1725 | } | |
1726 | ||
1727 | #endif | |
1728 | ||
46856a68 RN |
1729 | #ifdef CONFIG_OF |
1730 | static u16 omap4_reg_offset = 0x100; | |
1731 | ||
1732 | static const struct of_device_id omap_mmc_of_match[] = { | |
1733 | { | |
1734 | .compatible = "ti,omap2-hsmmc", | |
1735 | }, | |
1736 | { | |
1737 | .compatible = "ti,omap3-hsmmc", | |
1738 | }, | |
1739 | { | |
1740 | .compatible = "ti,omap4-hsmmc", | |
1741 | .data = &omap4_reg_offset, | |
1742 | }, | |
1743 | {}, | |
1744 | } | |
1745 | MODULE_DEVICE_TABLE(of, omap_mmc_of_match); | |
1746 | ||
1747 | static struct omap_mmc_platform_data *of_get_hsmmc_pdata(struct device *dev) | |
1748 | { | |
1749 | struct omap_mmc_platform_data *pdata; | |
1750 | struct device_node *np = dev->of_node; | |
1751 | u32 bus_width; | |
1752 | ||
1753 | pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); | |
1754 | if (!pdata) | |
1755 | return NULL; /* out of memory */ | |
1756 | ||
1757 | if (of_find_property(np, "ti,dual-volt", NULL)) | |
1758 | pdata->controller_flags |= OMAP_HSMMC_SUPPORTS_DUAL_VOLT; | |
1759 | ||
1760 | /* This driver only supports 1 slot */ | |
1761 | pdata->nr_slots = 1; | |
1762 | pdata->slots[0].switch_pin = of_get_named_gpio(np, "cd-gpios", 0); | |
1763 | pdata->slots[0].gpio_wp = of_get_named_gpio(np, "wp-gpios", 0); | |
1764 | ||
1765 | if (of_find_property(np, "ti,non-removable", NULL)) { | |
1766 | pdata->slots[0].nonremovable = true; | |
1767 | pdata->slots[0].no_regulator_off_init = true; | |
1768 | } | |
1769 | of_property_read_u32(np, "ti,bus-width", &bus_width); | |
1770 | if (bus_width == 4) | |
1771 | pdata->slots[0].caps |= MMC_CAP_4_BIT_DATA; | |
1772 | else if (bus_width == 8) | |
1773 | pdata->slots[0].caps |= MMC_CAP_8_BIT_DATA; | |
1774 | ||
1775 | if (of_find_property(np, "ti,needs-special-reset", NULL)) | |
1776 | pdata->slots[0].features |= HSMMC_HAS_UPDATED_RESET; | |
1777 | ||
1778 | return pdata; | |
1779 | } | |
1780 | #else | |
1781 | static inline struct omap_mmc_platform_data | |
1782 | *of_get_hsmmc_pdata(struct device *dev) | |
1783 | { | |
1784 | return NULL; | |
1785 | } | |
1786 | #endif | |
1787 | ||
efa25fd3 | 1788 | static int __devinit omap_hsmmc_probe(struct platform_device *pdev) |
a45c6cb8 MC |
1789 | { |
1790 | struct omap_mmc_platform_data *pdata = pdev->dev.platform_data; | |
1791 | struct mmc_host *mmc; | |
70a3341a | 1792 | struct omap_hsmmc_host *host = NULL; |
a45c6cb8 | 1793 | struct resource *res; |
db0fefc5 | 1794 | int ret, irq; |
46856a68 RN |
1795 | const struct of_device_id *match; |
1796 | ||
1797 | match = of_match_device(of_match_ptr(omap_mmc_of_match), &pdev->dev); | |
1798 | if (match) { | |
1799 | pdata = of_get_hsmmc_pdata(&pdev->dev); | |
1800 | if (match->data) { | |
1801 | u16 *offsetp = match->data; | |
1802 | pdata->reg_offset = *offsetp; | |
1803 | } | |
1804 | } | |
a45c6cb8 MC |
1805 | |
1806 | if (pdata == NULL) { | |
1807 | dev_err(&pdev->dev, "Platform Data is missing\n"); | |
1808 | return -ENXIO; | |
1809 | } | |
1810 | ||
1811 | if (pdata->nr_slots == 0) { | |
1812 | dev_err(&pdev->dev, "No Slots\n"); | |
1813 | return -ENXIO; | |
1814 | } | |
1815 | ||
1816 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1817 | irq = platform_get_irq(pdev, 0); | |
1818 | if (res == NULL || irq < 0) | |
1819 | return -ENXIO; | |
1820 | ||
91a0b089 | 1821 | res->start += pdata->reg_offset; |
1822 | res->end += pdata->reg_offset; | |
984b203a | 1823 | res = request_mem_region(res->start, resource_size(res), pdev->name); |
a45c6cb8 MC |
1824 | if (res == NULL) |
1825 | return -EBUSY; | |
1826 | ||
db0fefc5 AH |
1827 | ret = omap_hsmmc_gpio_init(pdata); |
1828 | if (ret) | |
1829 | goto err; | |
1830 | ||
70a3341a | 1831 | mmc = mmc_alloc_host(sizeof(struct omap_hsmmc_host), &pdev->dev); |
a45c6cb8 MC |
1832 | if (!mmc) { |
1833 | ret = -ENOMEM; | |
db0fefc5 | 1834 | goto err_alloc; |
a45c6cb8 MC |
1835 | } |
1836 | ||
1837 | host = mmc_priv(mmc); | |
1838 | host->mmc = mmc; | |
1839 | host->pdata = pdata; | |
1840 | host->dev = &pdev->dev; | |
1841 | host->use_dma = 1; | |
1842 | host->dev->dma_mask = &pdata->dma_mask; | |
1843 | host->dma_ch = -1; | |
1844 | host->irq = irq; | |
a45c6cb8 MC |
1845 | host->slot_id = 0; |
1846 | host->mapbase = res->start; | |
1847 | host->base = ioremap(host->mapbase, SZ_4K); | |
6da20c89 | 1848 | host->power_mode = MMC_POWER_OFF; |
9782aff8 | 1849 | host->next_data.cookie = 1; |
a45c6cb8 MC |
1850 | |
1851 | platform_set_drvdata(pdev, host); | |
a45c6cb8 | 1852 | |
7a8c2cef | 1853 | mmc->ops = &omap_hsmmc_ops; |
dd498eff | 1854 | |
e0eb2424 AH |
1855 | /* |
1856 | * If regulator_disable can only put vcc_aux to sleep then there is | |
1857 | * no off state. | |
1858 | */ | |
1859 | if (mmc_slot(host).vcc_aux_disable_is_sleep) | |
1860 | mmc_slot(host).no_off = 1; | |
1861 | ||
d418ed87 DM |
1862 | mmc->f_min = OMAP_MMC_MIN_CLOCK; |
1863 | ||
1864 | if (pdata->max_freq > 0) | |
1865 | mmc->f_max = pdata->max_freq; | |
1866 | else | |
1867 | mmc->f_max = OMAP_MMC_MAX_CLOCK; | |
a45c6cb8 | 1868 | |
4dffd7a2 | 1869 | spin_lock_init(&host->irq_lock); |
a45c6cb8 | 1870 | |
6f7607cc | 1871 | host->fclk = clk_get(&pdev->dev, "fck"); |
a45c6cb8 MC |
1872 | if (IS_ERR(host->fclk)) { |
1873 | ret = PTR_ERR(host->fclk); | |
1874 | host->fclk = NULL; | |
a45c6cb8 MC |
1875 | goto err1; |
1876 | } | |
1877 | ||
9b68256c PW |
1878 | if (host->pdata->controller_flags & OMAP_HSMMC_BROKEN_MULTIBLOCK_READ) { |
1879 | dev_info(&pdev->dev, "multiblock reads disabled due to 35xx erratum 2.1.1.128; MMC read performance may suffer\n"); | |
1880 | mmc->caps2 |= MMC_CAP2_NO_MULTI_READ; | |
1881 | } | |
dd498eff | 1882 | |
fa4aa2d4 B |
1883 | pm_runtime_enable(host->dev); |
1884 | pm_runtime_get_sync(host->dev); | |
1885 | pm_runtime_set_autosuspend_delay(host->dev, MMC_AUTOSUSPEND_DELAY); | |
1886 | pm_runtime_use_autosuspend(host->dev); | |
a45c6cb8 | 1887 | |
92a3aebf B |
1888 | omap_hsmmc_context_save(host); |
1889 | ||
2bec0893 AH |
1890 | if (cpu_is_omap2430()) { |
1891 | host->dbclk = clk_get(&pdev->dev, "mmchsdb_fck"); | |
1892 | /* | |
1893 | * MMC can still work without debounce clock. | |
1894 | */ | |
1895 | if (IS_ERR(host->dbclk)) | |
1896 | dev_warn(mmc_dev(host->mmc), | |
1897 | "Failed to get debounce clock\n"); | |
a45c6cb8 | 1898 | else |
2bec0893 AH |
1899 | host->got_dbclk = 1; |
1900 | ||
1901 | if (host->got_dbclk) | |
1902 | if (clk_enable(host->dbclk) != 0) | |
1903 | dev_dbg(mmc_dev(host->mmc), "Enabling debounce" | |
1904 | " clk failed\n"); | |
1905 | } | |
a45c6cb8 | 1906 | |
0ccd76d4 JY |
1907 | /* Since we do only SG emulation, we can have as many segs |
1908 | * as we want. */ | |
a36274e0 | 1909 | mmc->max_segs = 1024; |
0ccd76d4 | 1910 | |
a45c6cb8 MC |
1911 | mmc->max_blk_size = 512; /* Block Length at max can be 1024 */ |
1912 | mmc->max_blk_count = 0xFFFF; /* No. of Blocks is 16 bits */ | |
1913 | mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count; | |
1914 | mmc->max_seg_size = mmc->max_req_size; | |
1915 | ||
13189e78 | 1916 | mmc->caps |= MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED | |
93caf8e6 | 1917 | MMC_CAP_WAIT_WHILE_BUSY | MMC_CAP_ERASE; |
a45c6cb8 | 1918 | |
3a63833e SG |
1919 | mmc->caps |= mmc_slot(host).caps; |
1920 | if (mmc->caps & MMC_CAP_8_BIT_DATA) | |
a45c6cb8 MC |
1921 | mmc->caps |= MMC_CAP_4_BIT_DATA; |
1922 | ||
191d1f1d | 1923 | if (mmc_slot(host).nonremovable) |
23d99bb9 AH |
1924 | mmc->caps |= MMC_CAP_NONREMOVABLE; |
1925 | ||
6fdc75de EP |
1926 | mmc->pm_caps = mmc_slot(host).pm_caps; |
1927 | ||
70a3341a | 1928 | omap_hsmmc_conf_bus_power(host); |
a45c6cb8 | 1929 | |
b7bf773b B |
1930 | res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "tx"); |
1931 | if (!res) { | |
1932 | dev_err(mmc_dev(host->mmc), "cannot get DMA TX channel\n"); | |
1933 | goto err_irq; | |
1934 | } | |
1935 | host->dma_line_tx = res->start; | |
1936 | ||
1937 | res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "rx"); | |
1938 | if (!res) { | |
1939 | dev_err(mmc_dev(host->mmc), "cannot get DMA RX channel\n"); | |
f3e2f1dd GI |
1940 | goto err_irq; |
1941 | } | |
b7bf773b | 1942 | host->dma_line_rx = res->start; |
a45c6cb8 MC |
1943 | |
1944 | /* Request IRQ for MMC operations */ | |
d9618e9f | 1945 | ret = request_irq(host->irq, omap_hsmmc_irq, 0, |
a45c6cb8 MC |
1946 | mmc_hostname(mmc), host); |
1947 | if (ret) { | |
1948 | dev_dbg(mmc_dev(host->mmc), "Unable to grab HSMMC IRQ\n"); | |
1949 | goto err_irq; | |
1950 | } | |
1951 | ||
1952 | if (pdata->init != NULL) { | |
1953 | if (pdata->init(&pdev->dev) != 0) { | |
70a3341a DK |
1954 | dev_dbg(mmc_dev(host->mmc), |
1955 | "Unable to configure MMC IRQs\n"); | |
a45c6cb8 MC |
1956 | goto err_irq_cd_init; |
1957 | } | |
1958 | } | |
db0fefc5 | 1959 | |
b702b106 | 1960 | if (omap_hsmmc_have_reg() && !mmc_slot(host).set_power) { |
db0fefc5 AH |
1961 | ret = omap_hsmmc_reg_get(host); |
1962 | if (ret) | |
1963 | goto err_reg; | |
1964 | host->use_reg = 1; | |
1965 | } | |
1966 | ||
b583f26d | 1967 | mmc->ocr_avail = mmc_slot(host).ocr_mask; |
a45c6cb8 MC |
1968 | |
1969 | /* Request IRQ for card detect */ | |
e1a55f5e | 1970 | if ((mmc_slot(host).card_detect_irq)) { |
7efab4f3 N |
1971 | ret = request_threaded_irq(mmc_slot(host).card_detect_irq, |
1972 | NULL, | |
1973 | omap_hsmmc_detect, | |
1974 | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, | |
1975 | mmc_hostname(mmc), host); | |
a45c6cb8 MC |
1976 | if (ret) { |
1977 | dev_dbg(mmc_dev(host->mmc), | |
1978 | "Unable to grab MMC CD IRQ\n"); | |
1979 | goto err_irq_cd; | |
1980 | } | |
72f2e2c7 | 1981 | pdata->suspend = omap_hsmmc_suspend_cdirq; |
1982 | pdata->resume = omap_hsmmc_resume_cdirq; | |
a45c6cb8 MC |
1983 | } |
1984 | ||
b417577d | 1985 | omap_hsmmc_disable_irq(host); |
a45c6cb8 | 1986 | |
b62f6228 AH |
1987 | omap_hsmmc_protect_card(host); |
1988 | ||
a45c6cb8 MC |
1989 | mmc_add_host(mmc); |
1990 | ||
191d1f1d | 1991 | if (mmc_slot(host).name != NULL) { |
a45c6cb8 MC |
1992 | ret = device_create_file(&mmc->class_dev, &dev_attr_slot_name); |
1993 | if (ret < 0) | |
1994 | goto err_slot_name; | |
1995 | } | |
191d1f1d | 1996 | if (mmc_slot(host).card_detect_irq && mmc_slot(host).get_cover_state) { |
a45c6cb8 MC |
1997 | ret = device_create_file(&mmc->class_dev, |
1998 | &dev_attr_cover_switch); | |
1999 | if (ret < 0) | |
db0fefc5 | 2000 | goto err_slot_name; |
a45c6cb8 MC |
2001 | } |
2002 | ||
70a3341a | 2003 | omap_hsmmc_debugfs(mmc); |
fa4aa2d4 B |
2004 | pm_runtime_mark_last_busy(host->dev); |
2005 | pm_runtime_put_autosuspend(host->dev); | |
d900f712 | 2006 | |
a45c6cb8 MC |
2007 | return 0; |
2008 | ||
a45c6cb8 MC |
2009 | err_slot_name: |
2010 | mmc_remove_host(mmc); | |
a45c6cb8 | 2011 | free_irq(mmc_slot(host).card_detect_irq, host); |
db0fefc5 AH |
2012 | err_irq_cd: |
2013 | if (host->use_reg) | |
2014 | omap_hsmmc_reg_put(host); | |
2015 | err_reg: | |
2016 | if (host->pdata->cleanup) | |
2017 | host->pdata->cleanup(&pdev->dev); | |
a45c6cb8 MC |
2018 | err_irq_cd_init: |
2019 | free_irq(host->irq, host); | |
2020 | err_irq: | |
d59d77ed | 2021 | pm_runtime_put_sync(host->dev); |
37f6190d | 2022 | pm_runtime_disable(host->dev); |
a45c6cb8 | 2023 | clk_put(host->fclk); |
2bec0893 | 2024 | if (host->got_dbclk) { |
a45c6cb8 MC |
2025 | clk_disable(host->dbclk); |
2026 | clk_put(host->dbclk); | |
2027 | } | |
a45c6cb8 MC |
2028 | err1: |
2029 | iounmap(host->base); | |
db0fefc5 AH |
2030 | platform_set_drvdata(pdev, NULL); |
2031 | mmc_free_host(mmc); | |
2032 | err_alloc: | |
2033 | omap_hsmmc_gpio_free(pdata); | |
a45c6cb8 | 2034 | err: |
984b203a | 2035 | release_mem_region(res->start, resource_size(res)); |
a45c6cb8 MC |
2036 | return ret; |
2037 | } | |
2038 | ||
efa25fd3 | 2039 | static int __devexit omap_hsmmc_remove(struct platform_device *pdev) |
a45c6cb8 | 2040 | { |
70a3341a | 2041 | struct omap_hsmmc_host *host = platform_get_drvdata(pdev); |
a45c6cb8 MC |
2042 | struct resource *res; |
2043 | ||
927ce944 FB |
2044 | pm_runtime_get_sync(host->dev); |
2045 | mmc_remove_host(host->mmc); | |
2046 | if (host->use_reg) | |
2047 | omap_hsmmc_reg_put(host); | |
2048 | if (host->pdata->cleanup) | |
2049 | host->pdata->cleanup(&pdev->dev); | |
2050 | free_irq(host->irq, host); | |
2051 | if (mmc_slot(host).card_detect_irq) | |
2052 | free_irq(mmc_slot(host).card_detect_irq, host); | |
a45c6cb8 | 2053 | |
927ce944 FB |
2054 | pm_runtime_put_sync(host->dev); |
2055 | pm_runtime_disable(host->dev); | |
2056 | clk_put(host->fclk); | |
2057 | if (host->got_dbclk) { | |
2058 | clk_disable(host->dbclk); | |
2059 | clk_put(host->dbclk); | |
a45c6cb8 MC |
2060 | } |
2061 | ||
927ce944 FB |
2062 | mmc_free_host(host->mmc); |
2063 | iounmap(host->base); | |
2064 | omap_hsmmc_gpio_free(pdev->dev.platform_data); | |
2065 | ||
a45c6cb8 MC |
2066 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
2067 | if (res) | |
984b203a | 2068 | release_mem_region(res->start, resource_size(res)); |
a45c6cb8 MC |
2069 | platform_set_drvdata(pdev, NULL); |
2070 | ||
2071 | return 0; | |
2072 | } | |
2073 | ||
2074 | #ifdef CONFIG_PM | |
a791daa1 | 2075 | static int omap_hsmmc_suspend(struct device *dev) |
a45c6cb8 MC |
2076 | { |
2077 | int ret = 0; | |
927ce944 | 2078 | struct omap_hsmmc_host *host = dev_get_drvdata(dev); |
a45c6cb8 | 2079 | |
927ce944 | 2080 | if (!host) |
a45c6cb8 MC |
2081 | return 0; |
2082 | ||
927ce944 FB |
2083 | if (host && host->suspended) |
2084 | return 0; | |
fa4aa2d4 | 2085 | |
927ce944 FB |
2086 | pm_runtime_get_sync(host->dev); |
2087 | host->suspended = 1; | |
2088 | if (host->pdata->suspend) { | |
2089 | ret = host->pdata->suspend(dev, host->slot_id); | |
31f9d463 | 2090 | if (ret) { |
927ce944 FB |
2091 | dev_dbg(dev, "Unable to handle MMC board" |
2092 | " level suspend\n"); | |
a6b2240d | 2093 | host->suspended = 0; |
927ce944 | 2094 | return ret; |
a6b2240d | 2095 | } |
927ce944 FB |
2096 | } |
2097 | ret = mmc_suspend_host(host->mmc); | |
31f9d463 | 2098 | |
927ce944 FB |
2099 | if (ret) { |
2100 | host->suspended = 0; | |
2101 | if (host->pdata->resume) { | |
2102 | ret = host->pdata->resume(dev, host->slot_id); | |
2103 | if (ret) | |
2104 | dev_dbg(dev, "Unmask interrupt failed\n"); | |
31f9d463 | 2105 | } |
927ce944 FB |
2106 | goto err; |
2107 | } | |
31f9d463 | 2108 | |
927ce944 FB |
2109 | if (!(host->mmc->pm_flags & MMC_PM_KEEP_POWER)) { |
2110 | omap_hsmmc_disable_irq(host); | |
2111 | OMAP_HSMMC_WRITE(host->base, HCTL, | |
2112 | OMAP_HSMMC_READ(host->base, HCTL) & ~SDBP); | |
a45c6cb8 | 2113 | } |
927ce944 FB |
2114 | |
2115 | if (host->got_dbclk) | |
2116 | clk_disable(host->dbclk); | |
31f9d463 EP |
2117 | err: |
2118 | pm_runtime_put_sync(host->dev); | |
a45c6cb8 MC |
2119 | return ret; |
2120 | } | |
2121 | ||
2122 | /* Routine to resume the MMC device */ | |
a791daa1 | 2123 | static int omap_hsmmc_resume(struct device *dev) |
a45c6cb8 MC |
2124 | { |
2125 | int ret = 0; | |
927ce944 FB |
2126 | struct omap_hsmmc_host *host = dev_get_drvdata(dev); |
2127 | ||
2128 | if (!host) | |
2129 | return 0; | |
a45c6cb8 MC |
2130 | |
2131 | if (host && !host->suspended) | |
2132 | return 0; | |
2133 | ||
927ce944 | 2134 | pm_runtime_get_sync(host->dev); |
11dd62a7 | 2135 | |
927ce944 FB |
2136 | if (host->got_dbclk) |
2137 | clk_enable(host->dbclk); | |
2bec0893 | 2138 | |
927ce944 FB |
2139 | if (!(host->mmc->pm_flags & MMC_PM_KEEP_POWER)) |
2140 | omap_hsmmc_conf_bus_power(host); | |
1b331e69 | 2141 | |
927ce944 FB |
2142 | if (host->pdata->resume) { |
2143 | ret = host->pdata->resume(dev, host->slot_id); | |
2144 | if (ret) | |
2145 | dev_dbg(dev, "Unmask interrupt failed\n"); | |
2146 | } | |
a45c6cb8 | 2147 | |
927ce944 | 2148 | omap_hsmmc_protect_card(host); |
b62f6228 | 2149 | |
927ce944 FB |
2150 | /* Notify the core to resume the host */ |
2151 | ret = mmc_resume_host(host->mmc); | |
2152 | if (ret == 0) | |
2153 | host->suspended = 0; | |
fa4aa2d4 | 2154 | |
927ce944 FB |
2155 | pm_runtime_mark_last_busy(host->dev); |
2156 | pm_runtime_put_autosuspend(host->dev); | |
a45c6cb8 MC |
2157 | |
2158 | return ret; | |
2159 | ||
a45c6cb8 MC |
2160 | } |
2161 | ||
2162 | #else | |
70a3341a DK |
2163 | #define omap_hsmmc_suspend NULL |
2164 | #define omap_hsmmc_resume NULL | |
a45c6cb8 MC |
2165 | #endif |
2166 | ||
fa4aa2d4 B |
2167 | static int omap_hsmmc_runtime_suspend(struct device *dev) |
2168 | { | |
2169 | struct omap_hsmmc_host *host; | |
2170 | ||
2171 | host = platform_get_drvdata(to_platform_device(dev)); | |
2172 | omap_hsmmc_context_save(host); | |
927ce944 | 2173 | dev_dbg(dev, "disabled\n"); |
fa4aa2d4 B |
2174 | |
2175 | return 0; | |
2176 | } | |
2177 | ||
2178 | static int omap_hsmmc_runtime_resume(struct device *dev) | |
2179 | { | |
2180 | struct omap_hsmmc_host *host; | |
2181 | ||
2182 | host = platform_get_drvdata(to_platform_device(dev)); | |
2183 | omap_hsmmc_context_restore(host); | |
927ce944 | 2184 | dev_dbg(dev, "enabled\n"); |
fa4aa2d4 B |
2185 | |
2186 | return 0; | |
2187 | } | |
2188 | ||
a791daa1 | 2189 | static struct dev_pm_ops omap_hsmmc_dev_pm_ops = { |
70a3341a DK |
2190 | .suspend = omap_hsmmc_suspend, |
2191 | .resume = omap_hsmmc_resume, | |
fa4aa2d4 B |
2192 | .runtime_suspend = omap_hsmmc_runtime_suspend, |
2193 | .runtime_resume = omap_hsmmc_runtime_resume, | |
a791daa1 KH |
2194 | }; |
2195 | ||
2196 | static struct platform_driver omap_hsmmc_driver = { | |
efa25fd3 FB |
2197 | .probe = omap_hsmmc_probe, |
2198 | .remove = __devexit_p(omap_hsmmc_remove), | |
a45c6cb8 MC |
2199 | .driver = { |
2200 | .name = DRIVER_NAME, | |
2201 | .owner = THIS_MODULE, | |
a791daa1 | 2202 | .pm = &omap_hsmmc_dev_pm_ops, |
46856a68 | 2203 | .of_match_table = of_match_ptr(omap_mmc_of_match), |
a45c6cb8 MC |
2204 | }, |
2205 | }; | |
2206 | ||
70a3341a | 2207 | static int __init omap_hsmmc_init(void) |
a45c6cb8 MC |
2208 | { |
2209 | /* Register the MMC driver */ | |
efa25fd3 | 2210 | return platform_driver_register(&omap_hsmmc_driver); |
a45c6cb8 MC |
2211 | } |
2212 | ||
70a3341a | 2213 | static void __exit omap_hsmmc_cleanup(void) |
a45c6cb8 MC |
2214 | { |
2215 | /* Unregister MMC driver */ | |
70a3341a | 2216 | platform_driver_unregister(&omap_hsmmc_driver); |
a45c6cb8 MC |
2217 | } |
2218 | ||
70a3341a DK |
2219 | module_init(omap_hsmmc_init); |
2220 | module_exit(omap_hsmmc_cleanup); | |
a45c6cb8 MC |
2221 | |
2222 | MODULE_DESCRIPTION("OMAP High Speed Multimedia Card driver"); | |
2223 | MODULE_LICENSE("GPL"); | |
2224 | MODULE_ALIAS("platform:" DRIVER_NAME); | |
2225 | MODULE_AUTHOR("Texas Instruments Inc"); |