]> git.ipfire.org Git - people/ms/u-boot.git/blob - drivers/mmc/omap_hsmmc.c
projects / people / ms / u-boot.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
mmc: omap_hsmmc: Add support to get pinctrl values and max frequency for different...
[people/ms/u-boot.git] / drivers / mmc / omap_hsmmc.c
1 /*
2 * (C) Copyright 2008
3 * Texas Instruments, <www.ti.com>
4 * Sukumar Ghorai <s-ghorai@ti.com>
5 *
6 * See file CREDITS for list of people who contributed to this
7 * project.
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation's version 2 of
12 * the License.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
22 * MA 02111-1307 USA
23 */
24
25 #include <config.h>
26 #include <common.h>
27 #include <malloc.h>
28 #include <memalign.h>
29 #include <mmc.h>
30 #include <part.h>
31 #include <i2c.h>
32 #if defined(CONFIG_OMAP54XX) || defined(CONFIG_OMAP44XX)
33 #include <palmas.h>
34 #endif
35 #include <asm/io.h>
36 #include <asm/arch/mmc_host_def.h>
37 #ifdef CONFIG_OMAP54XX
38 #include <asm/arch/mux_dra7xx.h>
39 #include <asm/arch/dra7xx_iodelay.h>
40 #endif
41 #if !defined(CONFIG_SOC_KEYSTONE)
42 #include <asm/gpio.h>
43 #include <asm/arch/sys_proto.h>
44 #endif
45 #ifdef CONFIG_MMC_OMAP36XX_PINS
46 #include <asm/arch/mux.h>
47 #endif
48 #include <dm.h>
49
50 DECLARE_GLOBAL_DATA_PTR;
51
52 /* simplify defines to OMAP_HSMMC_USE_GPIO */
53 #if (defined(CONFIG_OMAP_GPIO) && !defined(CONFIG_SPL_BUILD)) || \
54 (defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_GPIO_SUPPORT))
55 #define OMAP_HSMMC_USE_GPIO
56 #else
57 #undef OMAP_HSMMC_USE_GPIO
58 #endif
59
60 /* common definitions for all OMAPs */
61 #define SYSCTL_SRC (1 << 25)
62 #define SYSCTL_SRD (1 << 26)
63
64 #ifdef CONFIG_IODELAY_RECALIBRATION
65 struct omap_hsmmc_pinctrl_state {
66 struct pad_conf_entry *padconf;
67 int npads;
68 struct iodelay_cfg_entry *iodelay;
69 int niodelays;
70 };
71 #endif
72
73 struct omap_hsmmc_data {
74 struct hsmmc *base_addr;
75 #if !CONFIG_IS_ENABLED(DM_MMC)
76 struct mmc_config cfg;
77 #endif
78 uint bus_width;
79 uint clock;
80 #ifdef OMAP_HSMMC_USE_GPIO
81 #if CONFIG_IS_ENABLED(DM_MMC)
82 struct gpio_desc cd_gpio; /* Change Detect GPIO */
83 struct gpio_desc wp_gpio; /* Write Protect GPIO */
84 bool cd_inverted;
85 #else
86 int cd_gpio;
87 int wp_gpio;
88 #endif
89 #endif
90 #if CONFIG_IS_ENABLED(DM_MMC)
91 uint iov;
92 enum bus_mode mode;
93 #endif
94 u8 controller_flags;
95 #ifndef CONFIG_OMAP34XX
96 struct omap_hsmmc_adma_desc *adma_desc_table;
97 uint desc_slot;
98 #endif
99 const char *hw_rev;
100 #ifdef CONFIG_IODELAY_RECALIBRATION
101 struct omap_hsmmc_pinctrl_state *default_pinctrl_state;
102 struct omap_hsmmc_pinctrl_state *hs_pinctrl_state;
103 struct omap_hsmmc_pinctrl_state *hs200_1_8v_pinctrl_state;
104 struct omap_hsmmc_pinctrl_state *ddr_1_8v_pinctrl_state;
105 struct omap_hsmmc_pinctrl_state *sdr12_pinctrl_state;
106 struct omap_hsmmc_pinctrl_state *sdr25_pinctrl_state;
107 struct omap_hsmmc_pinctrl_state *ddr50_pinctrl_state;
108 struct omap_hsmmc_pinctrl_state *sdr50_pinctrl_state;
109 struct omap_hsmmc_pinctrl_state *sdr104_pinctrl_state;
110 #endif
111 };
112
113 struct omap_mmc_of_data {
114 u8 controller_flags;
115 };
116
117 #ifndef CONFIG_OMAP34XX
118 struct omap_hsmmc_adma_desc {
119 u8 attr;
120 u8 reserved;
121 u16 len;
122 u32 addr;
123 };
124
125 #define ADMA_MAX_LEN 63488
126
127 /* Decriptor table defines */
128 #define ADMA_DESC_ATTR_VALID BIT(0)
129 #define ADMA_DESC_ATTR_END BIT(1)
130 #define ADMA_DESC_ATTR_INT BIT(2)
131 #define ADMA_DESC_ATTR_ACT1 BIT(4)
132 #define ADMA_DESC_ATTR_ACT2 BIT(5)
133
134 #define ADMA_DESC_TRANSFER_DATA ADMA_DESC_ATTR_ACT2
135 #define ADMA_DESC_LINK_DESC (ADMA_DESC_ATTR_ACT1 | ADMA_DESC_ATTR_ACT2)
136 #endif
137
138 /* If we fail after 1 second wait, something is really bad */
139 #define MAX_RETRY_MS 1000
140 #define MMC_TIMEOUT_MS 20
141
142 /* DMA transfers can take a long time if a lot a data is transferred.
143 * The timeout must take in account the amount of data. Let's assume
144 * that the time will never exceed 333 ms per MB (in other word we assume
145 * that the bandwidth is always above 3MB/s).
146 */
147 #define DMA_TIMEOUT_PER_MB 333
148 #define OMAP_HSMMC_SUPPORTS_DUAL_VOLT BIT(0)
149 #define OMAP_HSMMC_NO_1_8_V BIT(1)
150 #define OMAP_HSMMC_USE_ADMA BIT(2)
151 #define OMAP_HSMMC_REQUIRE_IODELAY BIT(3)
152
153 static int mmc_read_data(struct hsmmc *mmc_base, char *buf, unsigned int size);
154 static int mmc_write_data(struct hsmmc *mmc_base, const char *buf,
155 unsigned int siz);
156 static void omap_hsmmc_start_clock(struct hsmmc *mmc_base);
157 static void omap_hsmmc_stop_clock(struct hsmmc *mmc_base);
158 static void mmc_reset_controller_fsm(struct hsmmc *mmc_base, u32 bit);
159
160 static inline struct omap_hsmmc_data *omap_hsmmc_get_data(struct mmc *mmc)
161 {
162 #if CONFIG_IS_ENABLED(DM_MMC)
163 return dev_get_priv(mmc->dev);
164 #else
165 return (struct omap_hsmmc_data *)mmc->priv;
166 #endif
167 }
168 static inline struct mmc_config *omap_hsmmc_get_cfg(struct mmc *mmc)
169 {
170 #if CONFIG_IS_ENABLED(DM_MMC)
171 struct omap_hsmmc_plat *plat = dev_get_platdata(mmc->dev);
172 return &plat->cfg;
173 #else
174 return &((struct omap_hsmmc_data *)mmc->priv)->cfg;
175 #endif
176 }
177
178 #if defined(OMAP_HSMMC_USE_GPIO) && !CONFIG_IS_ENABLED(DM_MMC)
179 static int omap_mmc_setup_gpio_in(int gpio, const char *label)
180 {
181 int ret;
182
183 #ifndef CONFIG_DM_GPIO
184 if (!gpio_is_valid(gpio))
185 return -1;
186 #endif
187 ret = gpio_request(gpio, label);
188 if (ret)
189 return ret;
190
191 ret = gpio_direction_input(gpio);
192 if (ret)
193 return ret;
194
195 return gpio;
196 }
197 #endif
198
199 static unsigned char mmc_board_init(struct mmc *mmc)
200 {
201 #if defined(CONFIG_OMAP34XX)
202 struct mmc_config *cfg = omap_hsmmc_get_cfg(mmc);
203 t2_t *t2_base = (t2_t *)T2_BASE;
204 struct prcm *prcm_base = (struct prcm *)PRCM_BASE;
205 u32 pbias_lite;
206 #ifdef CONFIG_MMC_OMAP36XX_PINS
207 u32 wkup_ctrl = readl(OMAP34XX_CTRL_WKUP_CTRL);
208 #endif
209
210 pbias_lite = readl(&t2_base->pbias_lite);
211 pbias_lite &= ~(PBIASLITEPWRDNZ1 | PBIASLITEPWRDNZ0);
212 #ifdef CONFIG_TARGET_OMAP3_CAIRO
213 /* for cairo board, we need to set up 1.8 Volt bias level on MMC1 */
214 pbias_lite &= ~PBIASLITEVMODE0;
215 #endif
216 #ifdef CONFIG_MMC_OMAP36XX_PINS
217 if (get_cpu_family() == CPU_OMAP36XX) {
218 /* Disable extended drain IO before changing PBIAS */
219 wkup_ctrl &= ~OMAP34XX_CTRL_WKUP_CTRL_GPIO_IO_PWRDNZ;
220 writel(wkup_ctrl, OMAP34XX_CTRL_WKUP_CTRL);
221 }
222 #endif
223 writel(pbias_lite, &t2_base->pbias_lite);
224
225 writel(pbias_lite | PBIASLITEPWRDNZ1 |
226 PBIASSPEEDCTRL0 | PBIASLITEPWRDNZ0,
227 &t2_base->pbias_lite);
228
229 #ifdef CONFIG_MMC_OMAP36XX_PINS
230 if (get_cpu_family() == CPU_OMAP36XX)
231 /* Enable extended drain IO after changing PBIAS */
232 writel(wkup_ctrl |
233 OMAP34XX_CTRL_WKUP_CTRL_GPIO_IO_PWRDNZ,
234 OMAP34XX_CTRL_WKUP_CTRL);
235 #endif
236 writel(readl(&t2_base->devconf0) | MMCSDIO1ADPCLKISEL,
237 &t2_base->devconf0);
238
239 writel(readl(&t2_base->devconf1) | MMCSDIO2ADPCLKISEL,
240 &t2_base->devconf1);
241
242 /* Change from default of 52MHz to 26MHz if necessary */
243 if (!(cfg->host_caps & MMC_MODE_HS_52MHz))
244 writel(readl(&t2_base->ctl_prog_io1) & ~CTLPROGIO1SPEEDCTRL,
245 &t2_base->ctl_prog_io1);
246
247 writel(readl(&prcm_base->fclken1_core) |
248 EN_MMC1 | EN_MMC2 | EN_MMC3,
249 &prcm_base->fclken1_core);
250
251 writel(readl(&prcm_base->iclken1_core) |
252 EN_MMC1 | EN_MMC2 | EN_MMC3,
253 &prcm_base->iclken1_core);
254 #endif
255
256 #if defined(CONFIG_OMAP54XX) || defined(CONFIG_OMAP44XX)
257 /* PBIAS config needed for MMC1 only */
258 if (mmc_get_blk_desc(mmc)->devnum == 0)
259 vmmc_pbias_config(LDO_VOLT_3V0);
260 #endif
261
262 return 0;
263 }
264
265 void mmc_init_stream(struct hsmmc *mmc_base)
266 {
267 ulong start;
268
269 writel(readl(&mmc_base->con) | INIT_INITSTREAM, &mmc_base->con);
270
271 writel(MMC_CMD0, &mmc_base->cmd);
272 start = get_timer(0);
273 while (!(readl(&mmc_base->stat) & CC_MASK)) {
274 if (get_timer(0) - start > MAX_RETRY_MS) {
275 printf("%s: timedout waiting for cc!\n", __func__);
276 return;
277 }
278 }
279 writel(CC_MASK, &mmc_base->stat)
280 ;
281 writel(MMC_CMD0, &mmc_base->cmd)
282 ;
283 start = get_timer(0);
284 while (!(readl(&mmc_base->stat) & CC_MASK)) {
285 if (get_timer(0) - start > MAX_RETRY_MS) {
286 printf("%s: timedout waiting for cc2!\n", __func__);
287 return;
288 }
289 }
290 writel(readl(&mmc_base->con) & ~INIT_INITSTREAM, &mmc_base->con);
291 }
292
293 #if CONFIG_IS_ENABLED(DM_MMC)
294 #ifdef CONFIG_IODELAY_RECALIBRATION
295 static void omap_hsmmc_io_recalibrate(struct mmc *mmc)
296 {
297 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
298 struct omap_hsmmc_pinctrl_state *pinctrl_state;
299
300 switch (priv->mode) {
301 case MMC_HS_200:
302 pinctrl_state = priv->hs200_1_8v_pinctrl_state;
303 break;
304 case UHS_SDR104:
305 pinctrl_state = priv->sdr104_pinctrl_state;
306 break;
307 case UHS_SDR50:
308 pinctrl_state = priv->sdr50_pinctrl_state;
309 break;
310 case UHS_DDR50:
311 pinctrl_state = priv->ddr50_pinctrl_state;
312 break;
313 case UHS_SDR25:
314 pinctrl_state = priv->sdr25_pinctrl_state;
315 break;
316 case UHS_SDR12:
317 pinctrl_state = priv->sdr12_pinctrl_state;
318 break;
319 case SD_HS:
320 case MMC_HS:
321 case MMC_HS_52:
322 pinctrl_state = priv->hs_pinctrl_state;
323 break;
324 case MMC_DDR_52:
325 pinctrl_state = priv->ddr_1_8v_pinctrl_state;
326 default:
327 pinctrl_state = priv->default_pinctrl_state;
328 break;
329 }
330
331 if (priv->controller_flags & OMAP_HSMMC_REQUIRE_IODELAY) {
332 if (pinctrl_state->iodelay)
333 late_recalibrate_iodelay(pinctrl_state->padconf,
334 pinctrl_state->npads,
335 pinctrl_state->iodelay,
336 pinctrl_state->niodelays);
337 else
338 do_set_mux32((*ctrl)->control_padconf_core_base,
339 pinctrl_state->padconf,
340 pinctrl_state->npads);
341 }
342 }
343 #endif
344 static void omap_hsmmc_set_timing(struct mmc *mmc)
345 {
346 u32 val;
347 struct hsmmc *mmc_base;
348 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
349
350 mmc_base = priv->base_addr;
351
352 omap_hsmmc_stop_clock(mmc_base);
353 val = readl(&mmc_base->ac12);
354 val &= ~AC12_UHSMC_MASK;
355 priv->mode = mmc->selected_mode;
356
357 if (mmc_is_mode_ddr(priv->mode))
358 writel(readl(&mmc_base->con) | DDR, &mmc_base->con);
359 else
360 writel(readl(&mmc_base->con) & ~DDR, &mmc_base->con);
361
362 switch (priv->mode) {
363 case MMC_HS_200:
364 case UHS_SDR104:
365 val |= AC12_UHSMC_SDR104;
366 break;
367 case UHS_SDR50:
368 val |= AC12_UHSMC_SDR50;
369 break;
370 case MMC_DDR_52:
371 case UHS_DDR50:
372 val |= AC12_UHSMC_DDR50;
373 break;
374 case SD_HS:
375 case MMC_HS_52:
376 case UHS_SDR25:
377 val |= AC12_UHSMC_SDR25;
378 break;
379 case MMC_LEGACY:
380 case MMC_HS:
381 case SD_LEGACY:
382 case UHS_SDR12:
383 val |= AC12_UHSMC_SDR12;
384 break;
385 default:
386 val |= AC12_UHSMC_RES;
387 break;
388 }
389 writel(val, &mmc_base->ac12);
390
391 #ifdef CONFIG_IODELAY_RECALIBRATION
392 omap_hsmmc_io_recalibrate(mmc);
393 #endif
394 omap_hsmmc_start_clock(mmc_base);
395 }
396
397 static void omap_hsmmc_conf_bus_power(struct mmc *mmc)
398 {
399 struct hsmmc *mmc_base;
400 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
401 u32 val;
402
403 mmc_base = priv->base_addr;
404
405 val = readl(&mmc_base->hctl) & ~SDVS_MASK;
406
407 switch (priv->iov) {
408 case IOV_3V3:
409 val |= SDVS_3V3;
410 break;
411 case IOV_3V0:
412 val |= SDVS_3V0;
413 break;
414 case IOV_1V8:
415 val |= SDVS_1V8;
416 break;
417 }
418
419 writel(val, &mmc_base->hctl);
420 }
421
422 static void omap_hsmmc_set_capabilities(struct mmc *mmc)
423 {
424 struct hsmmc *mmc_base;
425 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
426 u32 val;
427
428 mmc_base = priv->base_addr;
429 val = readl(&mmc_base->capa);
430
431 if (priv->controller_flags & OMAP_HSMMC_SUPPORTS_DUAL_VOLT) {
432 val |= (VS30_3V0SUP | VS18_1V8SUP);
433 priv->iov = IOV_3V0;
434 } else if (priv->controller_flags & OMAP_HSMMC_NO_1_8_V) {
435 val |= VS30_3V0SUP;
436 val &= ~VS18_1V8SUP;
437 priv->iov = IOV_3V0;
438 } else {
439 val |= VS18_1V8SUP;
440 val &= ~VS30_3V0SUP;
441 priv->iov = IOV_1V8;
442 }
443
444 writel(val, &mmc_base->capa);
445 }
446
447 #ifdef MMC_SUPPORTS_TUNING
448 static void omap_hsmmc_disable_tuning(struct mmc *mmc)
449 {
450 struct hsmmc *mmc_base;
451 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
452 u32 val;
453
454 mmc_base = priv->base_addr;
455 val = readl(&mmc_base->ac12);
456 val &= ~(AC12_SCLK_SEL);
457 writel(val, &mmc_base->ac12);
458
459 val = readl(&mmc_base->dll);
460 val &= ~(DLL_FORCE_VALUE | DLL_SWT);
461 writel(val, &mmc_base->dll);
462 }
463
464 static void omap_hsmmc_set_dll(struct mmc *mmc, int count)
465 {
466 int i;
467 struct hsmmc *mmc_base;
468 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
469 u32 val;
470
471 mmc_base = priv->base_addr;
472 val = readl(&mmc_base->dll);
473 val |= DLL_FORCE_VALUE;
474 val &= ~(DLL_FORCE_SR_C_MASK << DLL_FORCE_SR_C_SHIFT);
475 val |= (count << DLL_FORCE_SR_C_SHIFT);
476 writel(val, &mmc_base->dll);
477
478 val |= DLL_CALIB;
479 writel(val, &mmc_base->dll);
480 for (i = 0; i < 1000; i++) {
481 if (readl(&mmc_base->dll) & DLL_CALIB)
482 break;
483 }
484 val &= ~DLL_CALIB;
485 writel(val, &mmc_base->dll);
486 }
487
488 static int omap_hsmmc_execute_tuning(struct udevice *dev, uint opcode)
489 {
490 struct omap_hsmmc_data *priv = dev_get_priv(dev);
491 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
492 struct mmc *mmc = upriv->mmc;
493 struct hsmmc *mmc_base;
494 u32 val;
495 u8 cur_match, prev_match = 0;
496 int ret;
497 u32 phase_delay = 0;
498 u32 start_window = 0, max_window = 0;
499 u32 length = 0, max_len = 0;
500
501 mmc_base = priv->base_addr;
502 val = readl(&mmc_base->capa2);
503
504 /* clock tuning is not needed for upto 52MHz */
505 if (!((mmc->selected_mode == MMC_HS_200) ||
506 (mmc->selected_mode == UHS_SDR104) ||
507 ((mmc->selected_mode == UHS_SDR50) && (val & CAPA2_TSDR50))))
508 return 0;
509
510 val = readl(&mmc_base->dll);
511 val |= DLL_SWT;
512 writel(val, &mmc_base->dll);
513 while (phase_delay <= MAX_PHASE_DELAY) {
514 omap_hsmmc_set_dll(mmc, phase_delay);
515
516 cur_match = !mmc_send_tuning(mmc, opcode, NULL);
517
518 if (cur_match) {
519 if (prev_match) {
520 length++;
521 } else {
522 start_window = phase_delay;
523 length = 1;
524 }
525 }
526
527 if (length > max_len) {
528 max_window = start_window;
529 max_len = length;
530 }
531
532 prev_match = cur_match;
533 phase_delay += 4;
534 }
535
536 if (!max_len) {
537 ret = -EIO;
538 goto tuning_error;
539 }
540
541 val = readl(&mmc_base->ac12);
542 if (!(val & AC12_SCLK_SEL)) {
543 ret = -EIO;
544 goto tuning_error;
545 }
546
547 phase_delay = max_window + 4 * ((3 * max_len) >> 2);
548 omap_hsmmc_set_dll(mmc, phase_delay);
549
550 mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD);
551 mmc_reset_controller_fsm(mmc_base, SYSCTL_SRC);
552
553 return 0;
554
555 tuning_error:
556
557 omap_hsmmc_disable_tuning(mmc);
558 mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD);
559 mmc_reset_controller_fsm(mmc_base, SYSCTL_SRC);
560
561 return ret;
562 }
563 #endif
564 #endif
565
566 static void mmc_enable_irq(struct mmc *mmc, struct mmc_cmd *cmd)
567 {
568 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
569 struct hsmmc *mmc_base = priv->base_addr;
570 u32 irq_mask = INT_EN_MASK;
571
572 /*
573 * TODO: Errata i802 indicates only DCRC interrupts can occur during
574 * tuning procedure and DCRC should be disabled. But see occurences
575 * of DEB, CIE, CEB, CCRC interupts during tuning procedure. These
576 * interrupts occur along with BRR, so the data is actually in the
577 * buffer. It has to be debugged why these interrutps occur
578 */
579 if (cmd && mmc_is_tuning_cmd(cmd->cmdidx))
580 irq_mask &= ~(IE_DEB | IE_DCRC | IE_CIE | IE_CEB | IE_CCRC);
581
582 writel(irq_mask, &mmc_base->ie);
583 }
584
585 static int omap_hsmmc_init_setup(struct mmc *mmc)
586 {
587 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
588 struct hsmmc *mmc_base;
589 unsigned int reg_val;
590 unsigned int dsor;
591 ulong start;
592
593 mmc_base = priv->base_addr;
594 mmc_board_init(mmc);
595
596 writel(readl(&mmc_base->sysconfig) | MMC_SOFTRESET,
597 &mmc_base->sysconfig);
598 start = get_timer(0);
599 while ((readl(&mmc_base->sysstatus) & RESETDONE) == 0) {
600 if (get_timer(0) - start > MAX_RETRY_MS) {
601 printf("%s: timedout waiting for cc2!\n", __func__);
602 return -ETIMEDOUT;
603 }
604 }
605 writel(readl(&mmc_base->sysctl) | SOFTRESETALL, &mmc_base->sysctl);
606 start = get_timer(0);
607 while ((readl(&mmc_base->sysctl) & SOFTRESETALL) != 0x0) {
608 if (get_timer(0) - start > MAX_RETRY_MS) {
609 printf("%s: timedout waiting for softresetall!\n",
610 __func__);
611 return -ETIMEDOUT;
612 }
613 }
614 #ifndef CONFIG_OMAP34XX
615 reg_val = readl(&mmc_base->hl_hwinfo);
616 if (reg_val & MADMA_EN)
617 priv->controller_flags |= OMAP_HSMMC_USE_ADMA;
618 #endif
619
620 #if CONFIG_IS_ENABLED(DM_MMC)
621 omap_hsmmc_set_capabilities(mmc);
622 omap_hsmmc_conf_bus_power(mmc);
623 #else
624 writel(DTW_1_BITMODE | SDBP_PWROFF | SDVS_3V0, &mmc_base->hctl);
625 writel(readl(&mmc_base->capa) | VS30_3V0SUP | VS18_1V8SUP,
626 &mmc_base->capa);
627 #endif
628
629 reg_val = readl(&mmc_base->con) & RESERVED_MASK;
630
631 writel(CTPL_MMC_SD | reg_val | WPP_ACTIVEHIGH | CDP_ACTIVEHIGH |
632 MIT_CTO | DW8_1_4BITMODE | MODE_FUNC | STR_BLOCK |
633 HR_NOHOSTRESP | INIT_NOINIT | NOOPENDRAIN, &mmc_base->con);
634
635 dsor = 240;
636 mmc_reg_out(&mmc_base->sysctl, (ICE_MASK | DTO_MASK | CEN_MASK),
637 (ICE_STOP | DTO_15THDTO));
638 mmc_reg_out(&mmc_base->sysctl, ICE_MASK | CLKD_MASK,
639 (dsor << CLKD_OFFSET) | ICE_OSCILLATE);
640 start = get_timer(0);
641 while ((readl(&mmc_base->sysctl) & ICS_MASK) == ICS_NOTREADY) {
642 if (get_timer(0) - start > MAX_RETRY_MS) {
643 printf("%s: timedout waiting for ics!\n", __func__);
644 return -ETIMEDOUT;
645 }
646 }
647 writel(readl(&mmc_base->sysctl) | CEN_ENABLE, &mmc_base->sysctl);
648
649 writel(readl(&mmc_base->hctl) | SDBP_PWRON, &mmc_base->hctl);
650
651 mmc_enable_irq(mmc, NULL);
652 mmc_init_stream(mmc_base);
653
654 return 0;
655 }
656
657 /*
658 * MMC controller internal finite state machine reset
659 *
660 * Used to reset command or data internal state machines, using respectively
661 * SRC or SRD bit of SYSCTL register
662 */
663 static void mmc_reset_controller_fsm(struct hsmmc *mmc_base, u32 bit)
664 {
665 ulong start;
666
667 mmc_reg_out(&mmc_base->sysctl, bit, bit);
668
669 /*
670 * CMD(DAT) lines reset procedures are slightly different
671 * for OMAP3 and OMAP4(AM335x,OMAP5,DRA7xx).
672 * According to OMAP3 TRM:
673 * Set SRC(SRD) bit in MMCHS_SYSCTL register to 0x1 and wait until it
674 * returns to 0x0.
675 * According to OMAP4(AM335x,OMAP5,DRA7xx) TRMs, CMD(DATA) lines reset
676 * procedure steps must be as follows:
677 * 1. Initiate CMD(DAT) line reset by writing 0x1 to SRC(SRD) bit in
678 * MMCHS_SYSCTL register (SD_SYSCTL for AM335x).
679 * 2. Poll the SRC(SRD) bit until it is set to 0x1.
680 * 3. Wait until the SRC (SRD) bit returns to 0x0
681 * (reset procedure is completed).
682 */
683 #if defined(CONFIG_OMAP44XX) || defined(CONFIG_OMAP54XX) || \
684 defined(CONFIG_AM33XX) || defined(CONFIG_AM43XX)
685 if (!(readl(&mmc_base->sysctl) & bit)) {
686 start = get_timer(0);
687 while (!(readl(&mmc_base->sysctl) & bit)) {
688 if (get_timer(0) - start > MMC_TIMEOUT_MS)
689 return;
690 }
691 }
692 #endif
693 start = get_timer(0);
694 while ((readl(&mmc_base->sysctl) & bit) != 0) {
695 if (get_timer(0) - start > MAX_RETRY_MS) {
696 printf("%s: timedout waiting for sysctl %x to clear\n",
697 __func__, bit);
698 return;
699 }
700 }
701 }
702
703 #ifndef CONFIG_OMAP34XX
704 static void omap_hsmmc_adma_desc(struct mmc *mmc, char *buf, u16 len, bool end)
705 {
706 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
707 struct omap_hsmmc_adma_desc *desc;
708 u8 attr;
709
710 desc = &priv->adma_desc_table[priv->desc_slot];
711
712 attr = ADMA_DESC_ATTR_VALID | ADMA_DESC_TRANSFER_DATA;
713 if (!end)
714 priv->desc_slot++;
715 else
716 attr |= ADMA_DESC_ATTR_END;
717
718 desc->len = len;
719 desc->addr = (u32)buf;
720 desc->reserved = 0;
721 desc->attr = attr;
722 }
723
724 static void omap_hsmmc_prepare_adma_table(struct mmc *mmc,
725 struct mmc_data *data)
726 {
727 uint total_len = data->blocksize * data->blocks;
728 uint desc_count = DIV_ROUND_UP(total_len, ADMA_MAX_LEN);
729 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
730 int i = desc_count;
731 char *buf;
732
733 priv->desc_slot = 0;
734 priv->adma_desc_table = (struct omap_hsmmc_adma_desc *)
735 memalign(ARCH_DMA_MINALIGN, desc_count *
736 sizeof(struct omap_hsmmc_adma_desc));
737
738 if (data->flags & MMC_DATA_READ)
739 buf = data->dest;
740 else
741 buf = (char *)data->src;
742
743 while (--i) {
744 omap_hsmmc_adma_desc(mmc, buf, ADMA_MAX_LEN, false);
745 buf += ADMA_MAX_LEN;
746 total_len -= ADMA_MAX_LEN;
747 }
748
749 omap_hsmmc_adma_desc(mmc, buf, total_len, true);
750
751 flush_dcache_range((long)priv->adma_desc_table,
752 (long)priv->adma_desc_table +
753 ROUND(desc_count *
754 sizeof(struct omap_hsmmc_adma_desc),
755 ARCH_DMA_MINALIGN));
756 }
757
758 static void omap_hsmmc_prepare_data(struct mmc *mmc, struct mmc_data *data)
759 {
760 struct hsmmc *mmc_base;
761 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
762 u32 val;
763 char *buf;
764
765 mmc_base = priv->base_addr;
766 omap_hsmmc_prepare_adma_table(mmc, data);
767
768 if (data->flags & MMC_DATA_READ)
769 buf = data->dest;
770 else
771 buf = (char *)data->src;
772
773 val = readl(&mmc_base->hctl);
774 val |= DMA_SELECT;
775 writel(val, &mmc_base->hctl);
776
777 val = readl(&mmc_base->con);
778 val |= DMA_MASTER;
779 writel(val, &mmc_base->con);
780
781 writel((u32)priv->adma_desc_table, &mmc_base->admasal);
782
783 flush_dcache_range((u32)buf,
784 (u32)buf +
785 ROUND(data->blocksize * data->blocks,
786 ARCH_DMA_MINALIGN));
787 }
788
789 static void omap_hsmmc_dma_cleanup(struct mmc *mmc)
790 {
791 struct hsmmc *mmc_base;
792 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
793 u32 val;
794
795 mmc_base = priv->base_addr;
796
797 val = readl(&mmc_base->con);
798 val &= ~DMA_MASTER;
799 writel(val, &mmc_base->con);
800
801 val = readl(&mmc_base->hctl);
802 val &= ~DMA_SELECT;
803 writel(val, &mmc_base->hctl);
804
805 kfree(priv->adma_desc_table);
806 }
807 #else
808 #define omap_hsmmc_adma_desc
809 #define omap_hsmmc_prepare_adma_table
810 #define omap_hsmmc_prepare_data
811 #define omap_hsmmc_dma_cleanup
812 #endif
813
814 #if !CONFIG_IS_ENABLED(DM_MMC)
815 static int omap_hsmmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
816 struct mmc_data *data)
817 {
818 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
819 #else
820 static int omap_hsmmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
821 struct mmc_data *data)
822 {
823 struct omap_hsmmc_data *priv = dev_get_priv(dev);
824 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
825 struct mmc *mmc = upriv->mmc;
826 #endif
827 struct hsmmc *mmc_base;
828 unsigned int flags, mmc_stat;
829 ulong start;
830
831 mmc_base = priv->base_addr;
832
833 if (cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION)
834 return 0;
835
836 start = get_timer(0);
837 while ((readl(&mmc_base->pstate) & (DATI_MASK | CMDI_MASK)) != 0) {
838 if (get_timer(0) - start > MAX_RETRY_MS) {
839 printf("%s: timedout waiting on cmd inhibit to clear\n",
840 __func__);
841 return -ETIMEDOUT;
842 }
843 }
844 writel(0xFFFFFFFF, &mmc_base->stat);
845 start = get_timer(0);
846 while (readl(&mmc_base->stat)) {
847 if (get_timer(0) - start > MAX_RETRY_MS) {
848 printf("%s: timedout waiting for STAT (%x) to clear\n",
849 __func__, readl(&mmc_base->stat));
850 return -ETIMEDOUT;
851 }
852 }
853 /*
854 * CMDREG
855 * CMDIDX[13:8] : Command index
856 * DATAPRNT[5] : Data Present Select
857 * ENCMDIDX[4] : Command Index Check Enable
858 * ENCMDCRC[3] : Command CRC Check Enable
859 * RSPTYP[1:0]
860 * 00 = No Response
861 * 01 = Length 136
862 * 10 = Length 48
863 * 11 = Length 48 Check busy after response
864 */
865 /* Delay added before checking the status of frq change
866 * retry not supported by mmc.c(core file)
867 */
868 if (cmd->cmdidx == SD_CMD_APP_SEND_SCR)
869 udelay(50000); /* wait 50 ms */
870
871 if (!(cmd->resp_type & MMC_RSP_PRESENT))
872 flags = 0;
873 else if (cmd->resp_type & MMC_RSP_136)
874 flags = RSP_TYPE_LGHT136 | CICE_NOCHECK;
875 else if (cmd->resp_type & MMC_RSP_BUSY)
876 flags = RSP_TYPE_LGHT48B;
877 else
878 flags = RSP_TYPE_LGHT48;
879
880 /* enable default flags */
881 flags = flags | (CMD_TYPE_NORMAL | CICE_NOCHECK | CCCE_NOCHECK |
882 MSBS_SGLEBLK);
883 flags &= ~(ACEN_ENABLE | BCE_ENABLE | DE_ENABLE);
884
885 if (cmd->resp_type & MMC_RSP_CRC)
886 flags |= CCCE_CHECK;
887 if (cmd->resp_type & MMC_RSP_OPCODE)
888 flags |= CICE_CHECK;
889
890 if (data) {
891 if ((cmd->cmdidx == MMC_CMD_READ_MULTIPLE_BLOCK) ||
892 (cmd->cmdidx == MMC_CMD_WRITE_MULTIPLE_BLOCK)) {
893 flags |= (MSBS_MULTIBLK | BCE_ENABLE | ACEN_ENABLE);
894 data->blocksize = 512;
895 writel(data->blocksize | (data->blocks << 16),
896 &mmc_base->blk);
897 } else
898 writel(data->blocksize | NBLK_STPCNT, &mmc_base->blk);
899
900 if (data->flags & MMC_DATA_READ)
901 flags |= (DP_DATA | DDIR_READ);
902 else
903 flags |= (DP_DATA | DDIR_WRITE);
904
905 #ifndef CONFIG_OMAP34XX
906 if ((priv->controller_flags & OMAP_HSMMC_USE_ADMA) &&
907 !mmc_is_tuning_cmd(cmd->cmdidx)) {
908 omap_hsmmc_prepare_data(mmc, data);
909 flags |= DE_ENABLE;
910 }
911 #endif
912 }
913
914 mmc_enable_irq(mmc, cmd);
915
916 writel(cmd->cmdarg, &mmc_base->arg);
917 udelay(20); /* To fix "No status update" error on eMMC */
918 writel((cmd->cmdidx << 24) | flags, &mmc_base->cmd);
919
920 start = get_timer(0);
921 do {
922 mmc_stat = readl(&mmc_base->stat);
923 if (get_timer(start) > MAX_RETRY_MS) {
924 printf("%s : timeout: No status update\n", __func__);
925 return -ETIMEDOUT;
926 }
927 } while (!mmc_stat);
928
929 if ((mmc_stat & IE_CTO) != 0) {
930 mmc_reset_controller_fsm(mmc_base, SYSCTL_SRC);
931 return -ETIMEDOUT;
932 } else if ((mmc_stat & ERRI_MASK) != 0)
933 return -1;
934
935 if (mmc_stat & CC_MASK) {
936 writel(CC_MASK, &mmc_base->stat);
937 if (cmd->resp_type & MMC_RSP_PRESENT) {
938 if (cmd->resp_type & MMC_RSP_136) {
939 /* response type 2 */
940 cmd->response[3] = readl(&mmc_base->rsp10);
941 cmd->response[2] = readl(&mmc_base->rsp32);
942 cmd->response[1] = readl(&mmc_base->rsp54);
943 cmd->response[0] = readl(&mmc_base->rsp76);
944 } else
945 /* response types 1, 1b, 3, 4, 5, 6 */
946 cmd->response[0] = readl(&mmc_base->rsp10);
947 }
948 }
949
950 #ifndef CONFIG_OMAP34XX
951 if ((priv->controller_flags & OMAP_HSMMC_USE_ADMA) && data &&
952 !mmc_is_tuning_cmd(cmd->cmdidx)) {
953 u32 sz_mb, timeout;
954
955 if (mmc_stat & IE_ADMAE) {
956 omap_hsmmc_dma_cleanup(mmc);
957 return -EIO;
958 }
959
960 sz_mb = DIV_ROUND_UP(data->blocksize * data->blocks, 1 << 20);
961 timeout = sz_mb * DMA_TIMEOUT_PER_MB;
962 if (timeout < MAX_RETRY_MS)
963 timeout = MAX_RETRY_MS;
964
965 start = get_timer(0);
966 do {
967 mmc_stat = readl(&mmc_base->stat);
968 if (mmc_stat & TC_MASK) {
969 writel(readl(&mmc_base->stat) | TC_MASK,
970 &mmc_base->stat);
971 break;
972 }
973 if (get_timer(start) > timeout) {
974 printf("%s : DMA timeout: No status update\n",
975 __func__);
976 return -ETIMEDOUT;
977 }
978 } while (1);
979
980 omap_hsmmc_dma_cleanup(mmc);
981 return 0;
982 }
983 #endif
984
985 if (data && (data->flags & MMC_DATA_READ)) {
986 mmc_read_data(mmc_base, data->dest,
987 data->blocksize * data->blocks);
988 } else if (data && (data->flags & MMC_DATA_WRITE)) {
989 mmc_write_data(mmc_base, data->src,
990 data->blocksize * data->blocks);
991 }
992 return 0;
993 }
994
995 static int mmc_read_data(struct hsmmc *mmc_base, char *buf, unsigned int size)
996 {
997 unsigned int *output_buf = (unsigned int *)buf;
998 unsigned int mmc_stat;
999 unsigned int count;
1000
1001 /*
1002 * Start Polled Read
1003 */
1004 count = (size > MMCSD_SECTOR_SIZE) ? MMCSD_SECTOR_SIZE : size;
1005 count /= 4;
1006
1007 while (size) {
1008 ulong start = get_timer(0);
1009 do {
1010 mmc_stat = readl(&mmc_base->stat);
1011 if (get_timer(0) - start > MAX_RETRY_MS) {
1012 printf("%s: timedout waiting for status!\n",
1013 __func__);
1014 return -ETIMEDOUT;
1015 }
1016 } while (mmc_stat == 0);
1017
1018 if ((mmc_stat & (IE_DTO | IE_DCRC | IE_DEB)) != 0)
1019 mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD);
1020
1021 if ((mmc_stat & ERRI_MASK) != 0)
1022 return 1;
1023
1024 if (mmc_stat & BRR_MASK) {
1025 unsigned int k;
1026
1027 writel(readl(&mmc_base->stat) | BRR_MASK,
1028 &mmc_base->stat);
1029 for (k = 0; k < count; k++) {
1030 *output_buf = readl(&mmc_base->data);
1031 output_buf++;
1032 }
1033 size -= (count*4);
1034 }
1035
1036 if (mmc_stat & BWR_MASK)
1037 writel(readl(&mmc_base->stat) | BWR_MASK,
1038 &mmc_base->stat);
1039
1040 if (mmc_stat & TC_MASK) {
1041 writel(readl(&mmc_base->stat) | TC_MASK,
1042 &mmc_base->stat);
1043 break;
1044 }
1045 }
1046 return 0;
1047 }
1048
1049 static int mmc_write_data(struct hsmmc *mmc_base, const char *buf,
1050 unsigned int size)
1051 {
1052 unsigned int *input_buf = (unsigned int *)buf;
1053 unsigned int mmc_stat;
1054 unsigned int count;
1055
1056 /*
1057 * Start Polled Write
1058 */
1059 count = (size > MMCSD_SECTOR_SIZE) ? MMCSD_SECTOR_SIZE : size;
1060 count /= 4;
1061
1062 while (size) {
1063 ulong start = get_timer(0);
1064 do {
1065 mmc_stat = readl(&mmc_base->stat);
1066 if (get_timer(0) - start > MAX_RETRY_MS) {
1067 printf("%s: timedout waiting for status!\n",
1068 __func__);
1069 return -ETIMEDOUT;
1070 }
1071 } while (mmc_stat == 0);
1072
1073 if ((mmc_stat & (IE_DTO | IE_DCRC | IE_DEB)) != 0)
1074 mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD);
1075
1076 if ((mmc_stat & ERRI_MASK) != 0)
1077 return 1;
1078
1079 if (mmc_stat & BWR_MASK) {
1080 unsigned int k;
1081
1082 writel(readl(&mmc_base->stat) | BWR_MASK,
1083 &mmc_base->stat);
1084 for (k = 0; k < count; k++) {
1085 writel(*input_buf, &mmc_base->data);
1086 input_buf++;
1087 }
1088 size -= (count*4);
1089 }
1090
1091 if (mmc_stat & BRR_MASK)
1092 writel(readl(&mmc_base->stat) | BRR_MASK,
1093 &mmc_base->stat);
1094
1095 if (mmc_stat & TC_MASK) {
1096 writel(readl(&mmc_base->stat) | TC_MASK,
1097 &mmc_base->stat);
1098 break;
1099 }
1100 }
1101 return 0;
1102 }
1103
1104 static void omap_hsmmc_stop_clock(struct hsmmc *mmc_base)
1105 {
1106 writel(readl(&mmc_base->sysctl) & ~CEN_ENABLE, &mmc_base->sysctl);
1107 }
1108
1109 static void omap_hsmmc_start_clock(struct hsmmc *mmc_base)
1110 {
1111 writel(readl(&mmc_base->sysctl) | CEN_ENABLE, &mmc_base->sysctl);
1112 }
1113
1114 static void omap_hsmmc_set_clock(struct mmc *mmc)
1115 {
1116 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
1117 struct hsmmc *mmc_base;
1118 unsigned int dsor = 0;
1119 ulong start;
1120
1121 mmc_base = priv->base_addr;
1122 omap_hsmmc_stop_clock(mmc_base);
1123
1124 /* TODO: Is setting DTO required here? */
1125 mmc_reg_out(&mmc_base->sysctl, (ICE_MASK | DTO_MASK),
1126 (ICE_STOP | DTO_15THDTO));
1127
1128 if (mmc->clock != 0) {
1129 dsor = DIV_ROUND_UP(MMC_CLOCK_REFERENCE * 1000000, mmc->clock);
1130 if (dsor > CLKD_MAX)
1131 dsor = CLKD_MAX;
1132 } else {
1133 dsor = CLKD_MAX;
1134 }
1135
1136 mmc_reg_out(&mmc_base->sysctl, ICE_MASK | CLKD_MASK,
1137 (dsor << CLKD_OFFSET) | ICE_OSCILLATE);
1138
1139 start = get_timer(0);
1140 while ((readl(&mmc_base->sysctl) & ICS_MASK) == ICS_NOTREADY) {
1141 if (get_timer(0) - start > MAX_RETRY_MS) {
1142 printf("%s: timedout waiting for ics!\n", __func__);
1143 return;
1144 }
1145 }
1146
1147 priv->clock = mmc->clock;
1148 omap_hsmmc_start_clock(mmc_base);
1149 }
1150
1151 static void omap_hsmmc_set_bus_width(struct mmc *mmc)
1152 {
1153 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
1154 struct hsmmc *mmc_base;
1155
1156 mmc_base = priv->base_addr;
1157 /* configue bus width */
1158 switch (mmc->bus_width) {
1159 case 8:
1160 writel(readl(&mmc_base->con) | DTW_8_BITMODE,
1161 &mmc_base->con);
1162 break;
1163
1164 case 4:
1165 writel(readl(&mmc_base->con) & ~DTW_8_BITMODE,
1166 &mmc_base->con);
1167 writel(readl(&mmc_base->hctl) | DTW_4_BITMODE,
1168 &mmc_base->hctl);
1169 break;
1170
1171 case 1:
1172 default:
1173 writel(readl(&mmc_base->con) & ~DTW_8_BITMODE,
1174 &mmc_base->con);
1175 writel(readl(&mmc_base->hctl) & ~DTW_4_BITMODE,
1176 &mmc_base->hctl);
1177 break;
1178 }
1179
1180 priv->bus_width = mmc->bus_width;
1181 }
1182
1183 #if !CONFIG_IS_ENABLED(DM_MMC)
1184 static int omap_hsmmc_set_ios(struct mmc *mmc)
1185 {
1186 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
1187 #else
1188 static int omap_hsmmc_set_ios(struct udevice *dev)
1189 {
1190 struct omap_hsmmc_data *priv = dev_get_priv(dev);
1191 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
1192 struct mmc *mmc = upriv->mmc;
1193 #endif
1194
1195 if (priv->bus_width != mmc->bus_width)
1196 omap_hsmmc_set_bus_width(mmc);
1197
1198 if (priv->clock != mmc->clock)
1199 omap_hsmmc_set_clock(mmc);
1200
1201 #if CONFIG_IS_ENABLED(DM_MMC)
1202 if (priv->mode != mmc->selected_mode)
1203 omap_hsmmc_set_timing(mmc);
1204 #endif
1205 return 0;
1206 }
1207
1208 #ifdef OMAP_HSMMC_USE_GPIO
1209 #if CONFIG_IS_ENABLED(DM_MMC)
1210 static int omap_hsmmc_getcd(struct udevice *dev)
1211 {
1212 struct omap_hsmmc_data *priv = dev_get_priv(dev);
1213 int value;
1214
1215 value = dm_gpio_get_value(&priv->cd_gpio);
1216 /* if no CD return as 1 */
1217 if (value < 0)
1218 return 1;
1219
1220 if (priv->cd_inverted)
1221 return !value;
1222 return value;
1223 }
1224
1225 static int omap_hsmmc_getwp(struct udevice *dev)
1226 {
1227 struct omap_hsmmc_data *priv = dev_get_priv(dev);
1228 int value;
1229
1230 value = dm_gpio_get_value(&priv->wp_gpio);
1231 /* if no WP return as 0 */
1232 if (value < 0)
1233 return 0;
1234 return value;
1235 }
1236 #else
1237 static int omap_hsmmc_getcd(struct mmc *mmc)
1238 {
1239 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
1240 int cd_gpio;
1241
1242 /* if no CD return as 1 */
1243 cd_gpio = priv->cd_gpio;
1244 if (cd_gpio < 0)
1245 return 1;
1246
1247 /* NOTE: assumes card detect signal is active-low */
1248 return !gpio_get_value(cd_gpio);
1249 }
1250
1251 static int omap_hsmmc_getwp(struct mmc *mmc)
1252 {
1253 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
1254 int wp_gpio;
1255
1256 /* if no WP return as 0 */
1257 wp_gpio = priv->wp_gpio;
1258 if (wp_gpio < 0)
1259 return 0;
1260
1261 /* NOTE: assumes write protect signal is active-high */
1262 return gpio_get_value(wp_gpio);
1263 }
1264 #endif
1265 #endif
1266
1267 #if CONFIG_IS_ENABLED(DM_MMC)
1268 static const struct dm_mmc_ops omap_hsmmc_ops = {
1269 .send_cmd = omap_hsmmc_send_cmd,
1270 .set_ios = omap_hsmmc_set_ios,
1271 #ifdef OMAP_HSMMC_USE_GPIO
1272 .get_cd = omap_hsmmc_getcd,
1273 .get_wp = omap_hsmmc_getwp,
1274 #endif
1275 #ifdef MMC_SUPPORTS_TUNING
1276 .execute_tuning = omap_hsmmc_execute_tuning,
1277 #endif
1278 };
1279 #else
1280 static const struct mmc_ops omap_hsmmc_ops = {
1281 .send_cmd = omap_hsmmc_send_cmd,
1282 .set_ios = omap_hsmmc_set_ios,
1283 .init = omap_hsmmc_init_setup,
1284 #ifdef OMAP_HSMMC_USE_GPIO
1285 .getcd = omap_hsmmc_getcd,
1286 .getwp = omap_hsmmc_getwp,
1287 #endif
1288 };
1289 #endif
1290
1291 #if !CONFIG_IS_ENABLED(DM_MMC)
1292 int omap_mmc_init(int dev_index, uint host_caps_mask, uint f_max, int cd_gpio,
1293 int wp_gpio)
1294 {
1295 struct mmc *mmc;
1296 struct omap_hsmmc_data *priv;
1297 struct mmc_config *cfg;
1298 uint host_caps_val;
1299
1300 priv = malloc(sizeof(*priv));
1301 if (priv == NULL)
1302 return -1;
1303
1304 host_caps_val = MMC_MODE_4BIT | MMC_MODE_HS_52MHz | MMC_MODE_HS;
1305
1306 switch (dev_index) {
1307 case 0:
1308 priv->base_addr = (struct hsmmc *)OMAP_HSMMC1_BASE;
1309 break;
1310 #ifdef OMAP_HSMMC2_BASE
1311 case 1:
1312 priv->base_addr = (struct hsmmc *)OMAP_HSMMC2_BASE;
1313 #if (defined(CONFIG_OMAP44XX) || defined(CONFIG_OMAP54XX) || \
1314 defined(CONFIG_DRA7XX) || defined(CONFIG_AM33XX) || \
1315 defined(CONFIG_AM43XX) || defined(CONFIG_SOC_KEYSTONE)) && \
1316 defined(CONFIG_HSMMC2_8BIT)
1317 /* Enable 8-bit interface for eMMC on OMAP4/5 or DRA7XX */
1318 host_caps_val |= MMC_MODE_8BIT;
1319 #endif
1320 break;
1321 #endif
1322 #ifdef OMAP_HSMMC3_BASE
1323 case 2:
1324 priv->base_addr = (struct hsmmc *)OMAP_HSMMC3_BASE;
1325 #if defined(CONFIG_DRA7XX) && defined(CONFIG_HSMMC3_8BIT)
1326 /* Enable 8-bit interface for eMMC on DRA7XX */
1327 host_caps_val |= MMC_MODE_8BIT;
1328 #endif
1329 break;
1330 #endif
1331 default:
1332 priv->base_addr = (struct hsmmc *)OMAP_HSMMC1_BASE;
1333 return 1;
1334 }
1335 #ifdef OMAP_HSMMC_USE_GPIO
1336 /* on error gpio values are set to -1, which is what we want */
1337 priv->cd_gpio = omap_mmc_setup_gpio_in(cd_gpio, "mmc_cd");
1338 priv->wp_gpio = omap_mmc_setup_gpio_in(wp_gpio, "mmc_wp");
1339 #endif
1340
1341 cfg = &priv->cfg;
1342
1343 cfg->name = "OMAP SD/MMC";
1344 cfg->ops = &omap_hsmmc_ops;
1345
1346 cfg->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
1347 cfg->host_caps = host_caps_val & ~host_caps_mask;
1348
1349 cfg->f_min = 400000;
1350
1351 if (f_max != 0)
1352 cfg->f_max = f_max;
1353 else {
1354 if (cfg->host_caps & MMC_MODE_HS) {
1355 if (cfg->host_caps & MMC_MODE_HS_52MHz)
1356 cfg->f_max = 52000000;
1357 else
1358 cfg->f_max = 26000000;
1359 } else
1360 cfg->f_max = 20000000;
1361 }
1362
1363 cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
1364
1365 #if defined(CONFIG_OMAP34XX)
1366 /*
1367 * Silicon revs 2.1 and older do not support multiblock transfers.
1368 */
1369 if ((get_cpu_family() == CPU_OMAP34XX) && (get_cpu_rev() <= CPU_3XX_ES21))
1370 cfg->b_max = 1;
1371 #endif
1372
1373 mmc = mmc_create(cfg, priv);
1374 if (mmc == NULL)
1375 return -1;
1376
1377 return 0;
1378 }
1379 #else
1380
1381 #ifdef CONFIG_IODELAY_RECALIBRATION
1382 static struct pad_conf_entry *
1383 omap_hsmmc_get_pad_conf_entry(const fdt32_t *pinctrl, int count)
1384 {
1385 int index = 0;
1386 struct pad_conf_entry *padconf;
1387
1388 padconf = (struct pad_conf_entry *)malloc(sizeof(*padconf) * count);
1389 if (!padconf) {
1390 debug("failed to allocate memory\n");
1391 return 0;
1392 }
1393
1394 while (index < count) {
1395 padconf[index].offset = fdt32_to_cpu(pinctrl[2 * index]);
1396 padconf[index].val = fdt32_to_cpu(pinctrl[2 * index + 1]);
1397 index++;
1398 }
1399
1400 return padconf;
1401 }
1402
1403 static struct iodelay_cfg_entry *
1404 omap_hsmmc_get_iodelay_cfg_entry(const fdt32_t *pinctrl, int count)
1405 {
1406 int index = 0;
1407 struct iodelay_cfg_entry *iodelay;
1408
1409 iodelay = (struct iodelay_cfg_entry *)malloc(sizeof(*iodelay) * count);
1410 if (!iodelay) {
1411 debug("failed to allocate memory\n");
1412 return 0;
1413 }
1414
1415 while (index < count) {
1416 iodelay[index].offset = fdt32_to_cpu(pinctrl[3 * index]);
1417 iodelay[index].a_delay = fdt32_to_cpu(pinctrl[3 * index + 1]);
1418 iodelay[index].g_delay = fdt32_to_cpu(pinctrl[3 * index + 2]);
1419 index++;
1420 }
1421
1422 return iodelay;
1423 }
1424
1425 static const fdt32_t *omap_hsmmc_get_pinctrl_entry(u32 phandle,
1426 const char *name, int *len)
1427 {
1428 const void *fdt = gd->fdt_blob;
1429 int offset;
1430 const fdt32_t *pinctrl;
1431
1432 offset = fdt_node_offset_by_phandle(fdt, phandle);
1433 if (offset < 0) {
1434 debug("failed to get pinctrl node %s.\n",
1435 fdt_strerror(offset));
1436 return 0;
1437 }
1438
1439 pinctrl = fdt_getprop(fdt, offset, name, len);
1440 if (!pinctrl) {
1441 debug("failed to get property %s\n", name);
1442 return 0;
1443 }
1444
1445 return pinctrl;
1446 }
1447
1448 static uint32_t omap_hsmmc_get_pad_conf_phandle(struct mmc *mmc,
1449 char *prop_name)
1450 {
1451 const void *fdt = gd->fdt_blob;
1452 const __be32 *phandle;
1453 int node = dev_of_offset(mmc->dev);
1454
1455 phandle = fdt_getprop(fdt, node, prop_name, NULL);
1456 if (!phandle) {
1457 debug("failed to get property %s\n", prop_name);
1458 return 0;
1459 }
1460
1461 return fdt32_to_cpu(*phandle);
1462 }
1463
1464 static uint32_t omap_hsmmc_get_iodelay_phandle(struct mmc *mmc,
1465 char *prop_name)
1466 {
1467 const void *fdt = gd->fdt_blob;
1468 const __be32 *phandle;
1469 int len;
1470 int count;
1471 int node = dev_of_offset(mmc->dev);
1472
1473 phandle = fdt_getprop(fdt, node, prop_name, &len);
1474 if (!phandle) {
1475 debug("failed to get property %s\n", prop_name);
1476 return 0;
1477 }
1478
1479 /* No manual mode iodelay values if count < 2 */
1480 count = len / sizeof(*phandle);
1481 if (count < 2)
1482 return 0;
1483
1484 return fdt32_to_cpu(*(phandle + 1));
1485 }
1486
1487 static struct pad_conf_entry *
1488 omap_hsmmc_get_pad_conf(struct mmc *mmc, char *prop_name, int *npads)
1489 {
1490 int len;
1491 int count;
1492 struct pad_conf_entry *padconf;
1493 u32 phandle;
1494 const fdt32_t *pinctrl;
1495
1496 phandle = omap_hsmmc_get_pad_conf_phandle(mmc, prop_name);
1497 if (!phandle)
1498 return ERR_PTR(-EINVAL);
1499
1500 pinctrl = omap_hsmmc_get_pinctrl_entry(phandle, "pinctrl-single,pins",
1501 &len);
1502 if (!pinctrl)
1503 return ERR_PTR(-EINVAL);
1504
1505 count = (len / sizeof(*pinctrl)) / 2;
1506 padconf = omap_hsmmc_get_pad_conf_entry(pinctrl, count);
1507 if (!padconf)
1508 return ERR_PTR(-EINVAL);
1509
1510 *npads = count;
1511
1512 return padconf;
1513 }
1514
1515 static struct iodelay_cfg_entry *
1516 omap_hsmmc_get_iodelay(struct mmc *mmc, char *prop_name, int *niodelay)
1517 {
1518 int len;
1519 int count;
1520 struct iodelay_cfg_entry *iodelay;
1521 u32 phandle;
1522 const fdt32_t *pinctrl;
1523
1524 phandle = omap_hsmmc_get_iodelay_phandle(mmc, prop_name);
1525 /* Not all modes have manual mode iodelay values. So its not fatal */
1526 if (!phandle)
1527 return 0;
1528
1529 pinctrl = omap_hsmmc_get_pinctrl_entry(phandle, "pinctrl-pin-array",
1530 &len);
1531 if (!pinctrl)
1532 return ERR_PTR(-EINVAL);
1533
1534 count = (len / sizeof(*pinctrl)) / 3;
1535 iodelay = omap_hsmmc_get_iodelay_cfg_entry(pinctrl, count);
1536 if (!iodelay)
1537 return ERR_PTR(-EINVAL);
1538
1539 *niodelay = count;
1540
1541 return iodelay;
1542 }
1543
1544 static struct omap_hsmmc_pinctrl_state *
1545 omap_hsmmc_get_pinctrl_by_mode(struct mmc *mmc, char *mode)
1546 {
1547 int index;
1548 int npads = 0;
1549 int niodelays = 0;
1550 const void *fdt = gd->fdt_blob;
1551 int node = dev_of_offset(mmc->dev);
1552 char prop_name[11];
1553 struct omap_hsmmc_pinctrl_state *pinctrl_state;
1554
1555 pinctrl_state = (struct omap_hsmmc_pinctrl_state *)
1556 malloc(sizeof(*pinctrl_state));
1557 if (!pinctrl_state) {
1558 debug("failed to allocate memory\n");
1559 return 0;
1560 }
1561
1562 index = fdt_stringlist_search(fdt, node, "pinctrl-names", mode);
1563 if (index < 0) {
1564 debug("fail to find %s mode %s\n", mode, fdt_strerror(index));
1565 goto err_pinctrl_state;
1566 }
1567
1568 sprintf(prop_name, "pinctrl-%d", index);
1569
1570 pinctrl_state->padconf = omap_hsmmc_get_pad_conf(mmc, prop_name,
1571 &npads);
1572 if (IS_ERR(pinctrl_state->padconf))
1573 goto err_pinctrl_state;
1574 pinctrl_state->npads = npads;
1575
1576 pinctrl_state->iodelay = omap_hsmmc_get_iodelay(mmc, prop_name,
1577 &niodelays);
1578 if (IS_ERR(pinctrl_state->iodelay))
1579 goto err_padconf;
1580 pinctrl_state->niodelays = niodelays;
1581
1582 return pinctrl_state;
1583
1584 err_padconf:
1585 kfree(pinctrl_state->padconf);
1586
1587 err_pinctrl_state:
1588 kfree(pinctrl_state);
1589 return 0;
1590 }
1591
1592 #define OMAP_HSMMC_SETUP_PINCTRL(capmask, mode) \
1593 do { \
1594 struct omap_hsmmc_pinctrl_state *s = NULL; \
1595 char str[20]; \
1596 if (!(cfg->host_caps & capmask)) \
1597 break; \
1598 \
1599 if (priv->hw_rev) { \
1600 sprintf(str, "%s-%s", #mode, priv->hw_rev); \
1601 s = omap_hsmmc_get_pinctrl_by_mode(mmc, str); \
1602 } \
1603 \
1604 if (!s) \
1605 s = omap_hsmmc_get_pinctrl_by_mode(mmc, #mode); \
1606 \
1607 if (!s) { \
1608 debug("%s: no pinctrl for %s\n", \
1609 mmc->dev->name, #mode); \
1610 cfg->host_caps &= ~(capmask); \
1611 } else { \
1612 priv->mode##_pinctrl_state = s; \
1613 } \
1614 } while (0)
1615
1616 static int omap_hsmmc_get_pinctrl_state(struct mmc *mmc)
1617 {
1618 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
1619 struct mmc_config *cfg = omap_hsmmc_get_cfg(mmc);
1620 struct omap_hsmmc_pinctrl_state *default_pinctrl;
1621
1622 if (!(priv->controller_flags & OMAP_HSMMC_REQUIRE_IODELAY))
1623 return 0;
1624
1625 default_pinctrl = omap_hsmmc_get_pinctrl_by_mode(mmc, "default");
1626 if (!default_pinctrl) {
1627 printf("no pinctrl state for default mode\n");
1628 return -EINVAL;
1629 }
1630
1631 priv->default_pinctrl_state = default_pinctrl;
1632
1633 OMAP_HSMMC_SETUP_PINCTRL(MMC_CAP(UHS_SDR104), sdr104);
1634 OMAP_HSMMC_SETUP_PINCTRL(MMC_CAP(UHS_SDR50), sdr50);
1635 OMAP_HSMMC_SETUP_PINCTRL(MMC_CAP(UHS_DDR50), ddr50);
1636 OMAP_HSMMC_SETUP_PINCTRL(MMC_CAP(UHS_SDR25), sdr25);
1637 OMAP_HSMMC_SETUP_PINCTRL(MMC_CAP(UHS_SDR12), sdr12);
1638
1639 OMAP_HSMMC_SETUP_PINCTRL(MMC_CAP(MMC_HS_200), hs200_1_8v);
1640 OMAP_HSMMC_SETUP_PINCTRL(MMC_CAP(MMC_DDR_52), ddr_1_8v);
1641 OMAP_HSMMC_SETUP_PINCTRL(MMC_MODE_HS, hs);
1642
1643 return 0;
1644 }
1645 #endif
1646
1647 #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
1648 #ifdef CONFIG_OMAP54XX
1649 __weak const struct mmc_platform_fixups *platform_fixups_mmc(uint32_t addr)
1650 {
1651 return NULL;
1652 }
1653 #endif
1654
1655 static int omap_hsmmc_ofdata_to_platdata(struct udevice *dev)
1656 {
1657 struct omap_hsmmc_plat *plat = dev_get_platdata(dev);
1658 struct omap_mmc_of_data *of_data = (void *)dev_get_driver_data(dev);
1659
1660 struct mmc_config *cfg = &plat->cfg;
1661 #ifdef CONFIG_OMAP54XX
1662 const struct mmc_platform_fixups *fixups;
1663 #endif
1664 const void *fdt = gd->fdt_blob;
1665 int node = dev_of_offset(dev);
1666 int ret;
1667
1668 plat->base_addr = map_physmem(devfdt_get_addr(dev),
1669 sizeof(struct hsmmc *),
1670 MAP_NOCACHE);
1671
1672 ret = mmc_of_parse(dev, cfg);
1673 if (ret < 0)
1674 return ret;
1675
1676 cfg->host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
1677 cfg->f_min = 400000;
1678 cfg->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
1679 cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
1680 if (fdtdec_get_bool(fdt, node, "ti,dual-volt"))
1681 plat->controller_flags |= OMAP_HSMMC_SUPPORTS_DUAL_VOLT;
1682 if (fdtdec_get_bool(fdt, node, "no-1-8-v"))
1683 plat->controller_flags |= OMAP_HSMMC_NO_1_8_V;
1684 if (of_data)
1685 plat->controller_flags |= of_data->controller_flags;
1686
1687 #ifdef CONFIG_OMAP54XX
1688 fixups = platform_fixups_mmc(devfdt_get_addr(dev));
1689 if (fixups) {
1690 plat->hw_rev = fixups->hw_rev;
1691 cfg->host_caps &= ~fixups->unsupported_caps;
1692 cfg->f_max = fixups->max_freq;
1693 }
1694 #endif
1695
1696 #ifdef OMAP_HSMMC_USE_GPIO
1697 plat->cd_inverted = fdtdec_get_bool(fdt, node, "cd-inverted");
1698 #endif
1699
1700 return 0;
1701 }
1702 #endif
1703
1704 #ifdef CONFIG_BLK
1705
1706 static int omap_hsmmc_bind(struct udevice *dev)
1707 {
1708 struct omap_hsmmc_plat *plat = dev_get_platdata(dev);
1709
1710 return mmc_bind(dev, &plat->mmc, &plat->cfg);
1711 }
1712 #endif
1713 static int omap_hsmmc_probe(struct udevice *dev)
1714 {
1715 struct omap_hsmmc_plat *plat = dev_get_platdata(dev);
1716 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
1717 struct omap_hsmmc_data *priv = dev_get_priv(dev);
1718 struct mmc_config *cfg = &plat->cfg;
1719 struct mmc *mmc;
1720 #ifdef CONFIG_IODELAY_RECALIBRATION
1721 int ret;
1722 #endif
1723
1724 cfg->name = "OMAP SD/MMC";
1725 priv->base_addr = plat->base_addr;
1726 priv->controller_flags = plat->controller_flags;
1727 priv->hw_rev = plat->hw_rev;
1728 #ifdef OMAP_HSMMC_USE_GPIO
1729 priv->cd_inverted = plat->cd_inverted;
1730 #endif
1731
1732 #ifdef CONFIG_BLK
1733 mmc = &plat->mmc;
1734 #else
1735 mmc = mmc_create(cfg, priv);
1736 if (mmc == NULL)
1737 return -1;
1738 #endif
1739
1740 #if defined(OMAP_HSMMC_USE_GPIO) && CONFIG_IS_ENABLED(OF_CONTROL)
1741 gpio_request_by_name(dev, "cd-gpios", 0, &priv->cd_gpio, GPIOD_IS_IN);
1742 gpio_request_by_name(dev, "wp-gpios", 0, &priv->wp_gpio, GPIOD_IS_IN);
1743 #endif
1744
1745 mmc->dev = dev;
1746 upriv->mmc = mmc;
1747
1748 #ifdef CONFIG_IODELAY_RECALIBRATION
1749 ret = omap_hsmmc_get_pinctrl_state(mmc);
1750 /*
1751 * disable high speed modes for the platforms that require IO delay
1752 * and for which we don't have this information
1753 */
1754 if ((ret < 0) &&
1755 (priv->controller_flags & OMAP_HSMMC_REQUIRE_IODELAY)) {
1756 priv->controller_flags &= ~OMAP_HSMMC_REQUIRE_IODELAY;
1757 cfg->host_caps &= ~(MMC_CAP(MMC_HS_200) | MMC_CAP(MMC_DDR_52) |
1758 UHS_CAPS);
1759 }
1760 #endif
1761
1762 return omap_hsmmc_init_setup(mmc);
1763 }
1764
1765 #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
1766
1767 static const struct omap_mmc_of_data dra7_mmc_of_data = {
1768 .controller_flags = OMAP_HSMMC_REQUIRE_IODELAY,
1769 };
1770
1771 static const struct udevice_id omap_hsmmc_ids[] = {
1772 { .compatible = "ti,omap3-hsmmc" },
1773 { .compatible = "ti,omap4-hsmmc" },
1774 { .compatible = "ti,am33xx-hsmmc" },
1775 { .compatible = "ti,dra7-hsmmc", .data = (ulong)&dra7_mmc_of_data },
1776 { }
1777 };
1778 #endif
1779
1780 U_BOOT_DRIVER(omap_hsmmc) = {
1781 .name = "omap_hsmmc",
1782 .id = UCLASS_MMC,
1783 #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
1784 .of_match = omap_hsmmc_ids,
1785 .ofdata_to_platdata = omap_hsmmc_ofdata_to_platdata,
1786 .platdata_auto_alloc_size = sizeof(struct omap_hsmmc_plat),
1787 #endif
1788 #ifdef CONFIG_BLK
1789 .bind = omap_hsmmc_bind,
1790 #endif
1791 .ops = &omap_hsmmc_ops,
1792 .probe = omap_hsmmc_probe,
1793 .priv_auto_alloc_size = sizeof(struct omap_hsmmc_data),
1794 .flags = DM_FLAG_PRE_RELOC,
1795 };
1796 #endif
"Das U-Boot" Source Tree