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 <cpu_func.h>
28 #include <log.h>
29 #include <malloc.h>
30 #include <memalign.h>
31 #include <mmc.h>
32 #include <part.h>
33 #include <i2c.h>
34 #if defined(CONFIG_OMAP54XX) || defined(CONFIG_OMAP44XX)
35 #include <palmas.h>
36 #endif
37 #include <asm/cache.h>
38 #include <asm/global_data.h>
39 #include <asm/io.h>
40 #include <asm/arch/mmc_host_def.h>
41 #ifdef CONFIG_OMAP54XX
42 #include <asm/arch/mux_dra7xx.h>
43 #include <asm/arch/dra7xx_iodelay.h>
44 #endif
45 #if !defined(CONFIG_SOC_KEYSTONE)
46 #include <asm/gpio.h>
47 #include <asm/arch/sys_proto.h>
48 #endif
49 #ifdef CONFIG_MMC_OMAP36XX_PINS
50 #include <asm/arch/mux.h>
51 #endif
52 #include <dm.h>
53 #include <dm/devres.h>
54 #include <linux/bitops.h>
55 #include <linux/delay.h>
56 #include <linux/err.h>
57 #include <power/regulator.h>
58 #include <thermal.h>
59
60 DECLARE_GLOBAL_DATA_PTR;
61
62 /* simplify defines to OMAP_HSMMC_USE_GPIO */
63 #if (defined(CONFIG_OMAP_GPIO) && !defined(CONFIG_SPL_BUILD)) || \
64 (defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_GPIO_SUPPORT))
65 #define OMAP_HSMMC_USE_GPIO
66 #else
67 #undef OMAP_HSMMC_USE_GPIO
68 #endif
69
70 /* common definitions for all OMAPs */
71 #define SYSCTL_SRC (1 << 25)
72 #define SYSCTL_SRD (1 << 26)
73
74 #ifdef CONFIG_IODELAY_RECALIBRATION
75 struct omap_hsmmc_pinctrl_state {
76 struct pad_conf_entry *padconf;
77 int npads;
78 struct iodelay_cfg_entry *iodelay;
79 int niodelays;
80 };
81 #endif
82
83 struct omap_hsmmc_data {
84 struct hsmmc *base_addr;
85 #if !CONFIG_IS_ENABLED(DM_MMC)
86 struct mmc_config cfg;
87 #endif
88 uint bus_width;
89 uint clock;
90 ushort last_cmd;
91 #ifdef OMAP_HSMMC_USE_GPIO
92 #if CONFIG_IS_ENABLED(DM_MMC)
93 struct gpio_desc cd_gpio; /* Change Detect GPIO */
94 struct gpio_desc wp_gpio; /* Write Protect GPIO */
95 #else
96 int cd_gpio;
97 int wp_gpio;
98 #endif
99 #endif
100 #if CONFIG_IS_ENABLED(DM_MMC)
101 enum bus_mode mode;
102 #endif
103 u8 controller_flags;
104 #ifdef CONFIG_MMC_OMAP_HS_ADMA
105 struct omap_hsmmc_adma_desc *adma_desc_table;
106 uint desc_slot;
107 #endif
108 const char *hw_rev;
109 struct udevice *pbias_supply;
110 uint signal_voltage;
111 #ifdef CONFIG_IODELAY_RECALIBRATION
112 struct omap_hsmmc_pinctrl_state *default_pinctrl_state;
113 struct omap_hsmmc_pinctrl_state *hs_pinctrl_state;
114 struct omap_hsmmc_pinctrl_state *hs200_1_8v_pinctrl_state;
115 struct omap_hsmmc_pinctrl_state *ddr_1_8v_pinctrl_state;
116 struct omap_hsmmc_pinctrl_state *sdr12_pinctrl_state;
117 struct omap_hsmmc_pinctrl_state *sdr25_pinctrl_state;
118 struct omap_hsmmc_pinctrl_state *ddr50_pinctrl_state;
119 struct omap_hsmmc_pinctrl_state *sdr50_pinctrl_state;
120 struct omap_hsmmc_pinctrl_state *sdr104_pinctrl_state;
121 #endif
122 };
123
124 struct omap_mmc_of_data {
125 u8 controller_flags;
126 };
127
128 #ifdef CONFIG_MMC_OMAP_HS_ADMA
129 struct omap_hsmmc_adma_desc {
130 u8 attr;
131 u8 reserved;
132 u16 len;
133 u32 addr;
134 };
135
136 #define ADMA_MAX_LEN 63488
137
138 /* Decriptor table defines */
139 #define ADMA_DESC_ATTR_VALID BIT(0)
140 #define ADMA_DESC_ATTR_END BIT(1)
141 #define ADMA_DESC_ATTR_INT BIT(2)
142 #define ADMA_DESC_ATTR_ACT1 BIT(4)
143 #define ADMA_DESC_ATTR_ACT2 BIT(5)
144
145 #define ADMA_DESC_TRANSFER_DATA ADMA_DESC_ATTR_ACT2
146 #define ADMA_DESC_LINK_DESC (ADMA_DESC_ATTR_ACT1 | ADMA_DESC_ATTR_ACT2)
147 #endif
148
149 /* If we fail after 1 second wait, something is really bad */
150 #define MAX_RETRY_MS 1000
151 #define MMC_TIMEOUT_MS 20
152
153 /* DMA transfers can take a long time if a lot a data is transferred.
154 * The timeout must take in account the amount of data. Let's assume
155 * that the time will never exceed 333 ms per MB (in other word we assume
156 * that the bandwidth is always above 3MB/s).
157 */
158 #define DMA_TIMEOUT_PER_MB 333
159 #define OMAP_HSMMC_SUPPORTS_DUAL_VOLT BIT(0)
160 #define OMAP_HSMMC_NO_1_8_V BIT(1)
161 #define OMAP_HSMMC_USE_ADMA BIT(2)
162 #define OMAP_HSMMC_REQUIRE_IODELAY BIT(3)
163
164 static int mmc_read_data(struct hsmmc *mmc_base, char *buf, unsigned int size);
165 static int mmc_write_data(struct hsmmc *mmc_base, const char *buf,
166 unsigned int siz);
167 static void omap_hsmmc_start_clock(struct hsmmc *mmc_base);
168 static void omap_hsmmc_stop_clock(struct hsmmc *mmc_base);
169 static void mmc_reset_controller_fsm(struct hsmmc *mmc_base, u32 bit);
170
omap_hsmmc_get_data(struct mmc * mmc)171 static inline struct omap_hsmmc_data *omap_hsmmc_get_data(struct mmc *mmc)
172 {
173 #if CONFIG_IS_ENABLED(DM_MMC)
174 return dev_get_priv(mmc->dev);
175 #else
176 return (struct omap_hsmmc_data *)mmc->priv;
177 #endif
178 }
179
180 #if defined(CONFIG_OMAP34XX) || defined(CONFIG_IODELAY_RECALIBRATION)
omap_hsmmc_get_cfg(struct mmc * mmc)181 static inline struct mmc_config *omap_hsmmc_get_cfg(struct mmc *mmc)
182 {
183 #if CONFIG_IS_ENABLED(DM_MMC)
184 struct omap_hsmmc_plat *plat = dev_get_plat(mmc->dev);
185 return &plat->cfg;
186 #else
187 return &((struct omap_hsmmc_data *)mmc->priv)->cfg;
188 #endif
189 }
190 #endif
191
192 #if defined(OMAP_HSMMC_USE_GPIO) && !CONFIG_IS_ENABLED(DM_MMC)
omap_mmc_setup_gpio_in(int gpio,const char * label)193 static int omap_mmc_setup_gpio_in(int gpio, const char *label)
194 {
195 int ret;
196
197 #if !CONFIG_IS_ENABLED(DM_GPIO)
198 if (!gpio_is_valid(gpio))
199 return -1;
200 #endif
201 ret = gpio_request(gpio, label);
202 if (ret)
203 return ret;
204
205 ret = gpio_direction_input(gpio);
206 if (ret)
207 return ret;
208
209 return gpio;
210 }
211 #endif
212
mmc_board_init(struct mmc * mmc)213 static unsigned char mmc_board_init(struct mmc *mmc)
214 {
215 #if defined(CONFIG_OMAP34XX)
216 struct mmc_config *cfg = omap_hsmmc_get_cfg(mmc);
217 t2_t *t2_base = (t2_t *)T2_BASE;
218 struct prcm *prcm_base = (struct prcm *)PRCM_BASE;
219 u32 pbias_lite;
220 #ifdef CONFIG_MMC_OMAP36XX_PINS
221 u32 wkup_ctrl = readl(OMAP34XX_CTRL_WKUP_CTRL);
222 #endif
223
224 pbias_lite = readl(&t2_base->pbias_lite);
225 pbias_lite &= ~(PBIASLITEPWRDNZ1 | PBIASLITEPWRDNZ0);
226 #ifdef CONFIG_TARGET_OMAP3_CAIRO
227 /* for cairo board, we need to set up 1.8 Volt bias level on MMC1 */
228 pbias_lite &= ~PBIASLITEVMODE0;
229 #endif
230 #ifdef CONFIG_TARGET_OMAP3_LOGIC
231 /* For Logic PD board, 1.8V bias to go enable gpio127 for mmc_cd */
232 pbias_lite &= ~PBIASLITEVMODE1;
233 #endif
234 #ifdef CONFIG_MMC_OMAP36XX_PINS
235 if (get_cpu_family() == CPU_OMAP36XX) {
236 /* Disable extended drain IO before changing PBIAS */
237 wkup_ctrl &= ~OMAP34XX_CTRL_WKUP_CTRL_GPIO_IO_PWRDNZ;
238 writel(wkup_ctrl, OMAP34XX_CTRL_WKUP_CTRL);
239 }
240 #endif
241 writel(pbias_lite, &t2_base->pbias_lite);
242
243 writel(pbias_lite | PBIASLITEPWRDNZ1 |
244 PBIASSPEEDCTRL0 | PBIASLITEPWRDNZ0,
245 &t2_base->pbias_lite);
246
247 #ifdef CONFIG_MMC_OMAP36XX_PINS
248 if (get_cpu_family() == CPU_OMAP36XX)
249 /* Enable extended drain IO after changing PBIAS */
250 writel(wkup_ctrl |
251 OMAP34XX_CTRL_WKUP_CTRL_GPIO_IO_PWRDNZ,
252 OMAP34XX_CTRL_WKUP_CTRL);
253 #endif
254 writel(readl(&t2_base->devconf0) | MMCSDIO1ADPCLKISEL,
255 &t2_base->devconf0);
256
257 writel(readl(&t2_base->devconf1) | MMCSDIO2ADPCLKISEL,
258 &t2_base->devconf1);
259
260 /* Change from default of 52MHz to 26MHz if necessary */
261 if (!(cfg->host_caps & MMC_MODE_HS_52MHz))
262 writel(readl(&t2_base->ctl_prog_io1) & ~CTLPROGIO1SPEEDCTRL,
263 &t2_base->ctl_prog_io1);
264
265 writel(readl(&prcm_base->fclken1_core) |
266 EN_MMC1 | EN_MMC2 | EN_MMC3,
267 &prcm_base->fclken1_core);
268
269 writel(readl(&prcm_base->iclken1_core) |
270 EN_MMC1 | EN_MMC2 | EN_MMC3,
271 &prcm_base->iclken1_core);
272 #endif
273
274 #if (defined(CONFIG_OMAP54XX) || defined(CONFIG_OMAP44XX)) &&\
275 !CONFIG_IS_ENABLED(DM_REGULATOR)
276 /* PBIAS config needed for MMC1 only */
277 if (mmc_get_blk_desc(mmc)->devnum == 0)
278 vmmc_pbias_config(LDO_VOLT_3V3);
279 #endif
280
281 return 0;
282 }
283
mmc_init_stream(struct hsmmc * mmc_base)284 void mmc_init_stream(struct hsmmc *mmc_base)
285 {
286 ulong start;
287
288 writel(readl(&mmc_base->con) | INIT_INITSTREAM, &mmc_base->con);
289
290 writel(MMC_CMD0, &mmc_base->cmd);
291 start = get_timer(0);
292 while (!(readl(&mmc_base->stat) & CC_MASK)) {
293 if (get_timer(0) - start > MAX_RETRY_MS) {
294 printf("%s: timedout waiting for cc!\n", __func__);
295 return;
296 }
297 }
298 writel(CC_MASK, &mmc_base->stat)
299 ;
300 writel(MMC_CMD0, &mmc_base->cmd)
301 ;
302 start = get_timer(0);
303 while (!(readl(&mmc_base->stat) & CC_MASK)) {
304 if (get_timer(0) - start > MAX_RETRY_MS) {
305 printf("%s: timedout waiting for cc2!\n", __func__);
306 return;
307 }
308 }
309 writel(readl(&mmc_base->con) & ~INIT_INITSTREAM, &mmc_base->con);
310 }
311
312 #if CONFIG_IS_ENABLED(DM_MMC)
313 #ifdef CONFIG_IODELAY_RECALIBRATION
omap_hsmmc_io_recalibrate(struct mmc * mmc)314 static void omap_hsmmc_io_recalibrate(struct mmc *mmc)
315 {
316 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
317 struct omap_hsmmc_pinctrl_state *pinctrl_state;
318
319 switch (priv->mode) {
320 case MMC_HS_200:
321 pinctrl_state = priv->hs200_1_8v_pinctrl_state;
322 break;
323 case UHS_SDR104:
324 pinctrl_state = priv->sdr104_pinctrl_state;
325 break;
326 case UHS_SDR50:
327 pinctrl_state = priv->sdr50_pinctrl_state;
328 break;
329 case UHS_DDR50:
330 pinctrl_state = priv->ddr50_pinctrl_state;
331 break;
332 case UHS_SDR25:
333 pinctrl_state = priv->sdr25_pinctrl_state;
334 break;
335 case UHS_SDR12:
336 pinctrl_state = priv->sdr12_pinctrl_state;
337 break;
338 case SD_HS:
339 case MMC_HS:
340 case MMC_HS_52:
341 pinctrl_state = priv->hs_pinctrl_state;
342 break;
343 case MMC_DDR_52:
344 pinctrl_state = priv->ddr_1_8v_pinctrl_state;
345 default:
346 pinctrl_state = priv->default_pinctrl_state;
347 break;
348 }
349
350 if (!pinctrl_state)
351 pinctrl_state = priv->default_pinctrl_state;
352
353 if (priv->controller_flags & OMAP_HSMMC_REQUIRE_IODELAY) {
354 if (pinctrl_state->iodelay)
355 late_recalibrate_iodelay(pinctrl_state->padconf,
356 pinctrl_state->npads,
357 pinctrl_state->iodelay,
358 pinctrl_state->niodelays);
359 else
360 do_set_mux32((*ctrl)->control_padconf_core_base,
361 pinctrl_state->padconf,
362 pinctrl_state->npads);
363 }
364 }
365 #endif
omap_hsmmc_set_timing(struct mmc * mmc)366 static void omap_hsmmc_set_timing(struct mmc *mmc)
367 {
368 u32 val;
369 struct hsmmc *mmc_base;
370 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
371
372 mmc_base = priv->base_addr;
373
374 omap_hsmmc_stop_clock(mmc_base);
375 val = readl(&mmc_base->ac12);
376 val &= ~AC12_UHSMC_MASK;
377 priv->mode = mmc->selected_mode;
378
379 if (mmc_is_mode_ddr(priv->mode))
380 writel(readl(&mmc_base->con) | DDR, &mmc_base->con);
381 else
382 writel(readl(&mmc_base->con) & ~DDR, &mmc_base->con);
383
384 switch (priv->mode) {
385 case MMC_HS_200:
386 case UHS_SDR104:
387 val |= AC12_UHSMC_SDR104;
388 break;
389 case UHS_SDR50:
390 val |= AC12_UHSMC_SDR50;
391 break;
392 case MMC_DDR_52:
393 case UHS_DDR50:
394 val |= AC12_UHSMC_DDR50;
395 break;
396 case SD_HS:
397 case MMC_HS_52:
398 case UHS_SDR25:
399 val |= AC12_UHSMC_SDR25;
400 break;
401 case MMC_LEGACY:
402 case MMC_HS:
403 case UHS_SDR12:
404 val |= AC12_UHSMC_SDR12;
405 break;
406 default:
407 val |= AC12_UHSMC_RES;
408 break;
409 }
410 writel(val, &mmc_base->ac12);
411
412 #ifdef CONFIG_IODELAY_RECALIBRATION
413 omap_hsmmc_io_recalibrate(mmc);
414 #endif
415 omap_hsmmc_start_clock(mmc_base);
416 }
417
omap_hsmmc_conf_bus_power(struct mmc * mmc,uint signal_voltage)418 static void omap_hsmmc_conf_bus_power(struct mmc *mmc, uint signal_voltage)
419 {
420 struct hsmmc *mmc_base;
421 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
422 u32 hctl, ac12;
423
424 mmc_base = priv->base_addr;
425
426 hctl = readl(&mmc_base->hctl) & ~SDVS_MASK;
427 ac12 = readl(&mmc_base->ac12) & ~AC12_V1V8_SIGEN;
428
429 switch (signal_voltage) {
430 case MMC_SIGNAL_VOLTAGE_330:
431 hctl |= SDVS_3V3;
432 break;
433 case MMC_SIGNAL_VOLTAGE_180:
434 hctl |= SDVS_1V8;
435 ac12 |= AC12_V1V8_SIGEN;
436 break;
437 }
438
439 writel(hctl, &mmc_base->hctl);
440 writel(ac12, &mmc_base->ac12);
441 }
442
omap_hsmmc_wait_dat0(struct udevice * dev,int state,int timeout_us)443 static int omap_hsmmc_wait_dat0(struct udevice *dev, int state, int timeout_us)
444 {
445 int ret = -ETIMEDOUT;
446 u32 con;
447 bool dat0_high;
448 bool target_dat0_high = !!state;
449 struct omap_hsmmc_data *priv = dev_get_priv(dev);
450 struct hsmmc *mmc_base = priv->base_addr;
451
452 con = readl(&mmc_base->con);
453 writel(con | CON_CLKEXTFREE | CON_PADEN, &mmc_base->con);
454
455 timeout_us = DIV_ROUND_UP(timeout_us, 10); /* check every 10 us. */
456 while (timeout_us--) {
457 dat0_high = !!(readl(&mmc_base->pstate) & PSTATE_DLEV_DAT0);
458 if (dat0_high == target_dat0_high) {
459 ret = 0;
460 break;
461 }
462 udelay(10);
463 }
464 writel(con, &mmc_base->con);
465
466 return ret;
467 }
468
469 #if CONFIG_IS_ENABLED(MMC_IO_VOLTAGE)
470 #if CONFIG_IS_ENABLED(DM_REGULATOR)
omap_hsmmc_set_io_regulator(struct mmc * mmc,int mV)471 static int omap_hsmmc_set_io_regulator(struct mmc *mmc, int mV)
472 {
473 int ret = 0;
474 int uV = mV * 1000;
475
476 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
477
478 if (!mmc->vqmmc_supply)
479 return 0;
480
481 /* Disable PBIAS */
482 ret = regulator_set_enable_if_allowed(priv->pbias_supply, false);
483 if (ret)
484 return ret;
485
486 /* Turn off IO voltage */
487 ret = regulator_set_enable_if_allowed(mmc->vqmmc_supply, false);
488 if (ret)
489 return ret;
490 /* Program a new IO voltage value */
491 ret = regulator_set_value(mmc->vqmmc_supply, uV);
492 if (ret)
493 return ret;
494 /* Turn on IO voltage */
495 ret = regulator_set_enable_if_allowed(mmc->vqmmc_supply, true);
496 if (ret)
497 return ret;
498
499 /* Program PBIAS voltage*/
500 ret = regulator_set_value(priv->pbias_supply, uV);
501 if (ret && ret != -ENOSYS)
502 return ret;
503 /* Enable PBIAS */
504 ret = regulator_set_enable_if_allowed(priv->pbias_supply, true);
505 if (ret)
506 return ret;
507
508 return 0;
509 }
510 #endif
511
omap_hsmmc_set_signal_voltage(struct mmc * mmc)512 static int omap_hsmmc_set_signal_voltage(struct mmc *mmc)
513 {
514 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
515 struct hsmmc *mmc_base = priv->base_addr;
516 int mv = mmc_voltage_to_mv(mmc->signal_voltage);
517 u32 capa_mask;
518 __maybe_unused u8 palmas_ldo_volt;
519 u32 val;
520
521 if (mv < 0)
522 return -EINVAL;
523
524 if (mmc->signal_voltage == MMC_SIGNAL_VOLTAGE_330) {
525 mv = 3300;
526 capa_mask = VS33_3V3SUP;
527 palmas_ldo_volt = LDO_VOLT_3V3;
528 } else if (mmc->signal_voltage == MMC_SIGNAL_VOLTAGE_180) {
529 capa_mask = VS18_1V8SUP;
530 palmas_ldo_volt = LDO_VOLT_1V8;
531 } else {
532 return -EOPNOTSUPP;
533 }
534
535 val = readl(&mmc_base->capa);
536 if (!(val & capa_mask))
537 return -EOPNOTSUPP;
538
539 priv->signal_voltage = mmc->signal_voltage;
540
541 omap_hsmmc_conf_bus_power(mmc, mmc->signal_voltage);
542
543 #if CONFIG_IS_ENABLED(DM_REGULATOR)
544 return omap_hsmmc_set_io_regulator(mmc, mv);
545 #elif (defined(CONFIG_OMAP54XX) || defined(CONFIG_OMAP44XX)) && \
546 defined(CONFIG_PALMAS_POWER)
547 if (mmc_get_blk_desc(mmc)->devnum == 0)
548 vmmc_pbias_config(palmas_ldo_volt);
549 return 0;
550 #else
551 return 0;
552 #endif
553 }
554 #endif
555
omap_hsmmc_set_capabilities(struct mmc * mmc)556 static uint32_t omap_hsmmc_set_capabilities(struct mmc *mmc)
557 {
558 struct hsmmc *mmc_base;
559 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
560 u32 val;
561
562 mmc_base = priv->base_addr;
563 val = readl(&mmc_base->capa);
564
565 if (priv->controller_flags & OMAP_HSMMC_SUPPORTS_DUAL_VOLT) {
566 val |= (VS33_3V3SUP | VS18_1V8SUP);
567 } else if (priv->controller_flags & OMAP_HSMMC_NO_1_8_V) {
568 val |= VS33_3V3SUP;
569 val &= ~VS18_1V8SUP;
570 } else {
571 val |= VS18_1V8SUP;
572 val &= ~VS33_3V3SUP;
573 }
574
575 writel(val, &mmc_base->capa);
576
577 return val;
578 }
579
580 #ifdef MMC_SUPPORTS_TUNING
omap_hsmmc_disable_tuning(struct mmc * mmc)581 static void omap_hsmmc_disable_tuning(struct mmc *mmc)
582 {
583 struct hsmmc *mmc_base;
584 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
585 u32 val;
586
587 mmc_base = priv->base_addr;
588 val = readl(&mmc_base->ac12);
589 val &= ~(AC12_SCLK_SEL);
590 writel(val, &mmc_base->ac12);
591
592 val = readl(&mmc_base->dll);
593 val &= ~(DLL_FORCE_VALUE | DLL_SWT);
594 writel(val, &mmc_base->dll);
595 }
596
omap_hsmmc_set_dll(struct mmc * mmc,int count)597 static void omap_hsmmc_set_dll(struct mmc *mmc, int count)
598 {
599 int i;
600 struct hsmmc *mmc_base;
601 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
602 u32 val;
603
604 mmc_base = priv->base_addr;
605 val = readl(&mmc_base->dll);
606 val |= DLL_FORCE_VALUE;
607 val &= ~(DLL_FORCE_SR_C_MASK << DLL_FORCE_SR_C_SHIFT);
608 val |= (count << DLL_FORCE_SR_C_SHIFT);
609 writel(val, &mmc_base->dll);
610
611 val |= DLL_CALIB;
612 writel(val, &mmc_base->dll);
613 for (i = 0; i < 1000; i++) {
614 if (readl(&mmc_base->dll) & DLL_CALIB)
615 break;
616 }
617 val &= ~DLL_CALIB;
618 writel(val, &mmc_base->dll);
619 }
620
omap_hsmmc_execute_tuning(struct udevice * dev,uint opcode)621 static int omap_hsmmc_execute_tuning(struct udevice *dev, uint opcode)
622 {
623 struct omap_hsmmc_data *priv = dev_get_priv(dev);
624 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
625 struct mmc *mmc = upriv->mmc;
626 struct hsmmc *mmc_base;
627 u32 val;
628 u8 cur_match, prev_match = 0;
629 int ret;
630 u32 phase_delay = 0;
631 u32 start_window = 0, max_window = 0;
632 u32 length = 0, max_len = 0;
633 bool single_point_failure = false;
634 struct udevice *thermal_dev;
635 int temperature;
636 int i;
637
638 mmc_base = priv->base_addr;
639 val = readl(&mmc_base->capa2);
640
641 /* clock tuning is not needed for upto 52MHz */
642 if (!((mmc->selected_mode == MMC_HS_200) ||
643 (mmc->selected_mode == UHS_SDR104) ||
644 ((mmc->selected_mode == UHS_SDR50) && (val & CAPA2_TSDR50))))
645 return 0;
646
647 ret = uclass_first_device(UCLASS_THERMAL, &thermal_dev);
648 if (ret) {
649 printf("Couldn't get thermal device for tuning\n");
650 return ret;
651 }
652 ret = thermal_get_temp(thermal_dev, &temperature);
653 if (ret) {
654 printf("Couldn't get temperature for tuning\n");
655 return ret;
656 }
657 val = readl(&mmc_base->dll);
658 val |= DLL_SWT;
659 writel(val, &mmc_base->dll);
660
661 /*
662 * Stage 1: Search for a maximum pass window ignoring any
663 * any single point failures. If the tuning value ends up
664 * near it, move away from it in stage 2 below
665 */
666 while (phase_delay <= MAX_PHASE_DELAY) {
667 omap_hsmmc_set_dll(mmc, phase_delay);
668
669 cur_match = !mmc_send_tuning(mmc, opcode, NULL);
670
671 if (cur_match) {
672 if (prev_match) {
673 length++;
674 } else if (single_point_failure) {
675 /* ignore single point failure */
676 length++;
677 single_point_failure = false;
678 } else {
679 start_window = phase_delay;
680 length = 1;
681 }
682 } else {
683 single_point_failure = prev_match;
684 }
685
686 if (length > max_len) {
687 max_window = start_window;
688 max_len = length;
689 }
690
691 prev_match = cur_match;
692 phase_delay += 4;
693 }
694
695 if (!max_len) {
696 ret = -EIO;
697 goto tuning_error;
698 }
699
700 val = readl(&mmc_base->ac12);
701 if (!(val & AC12_SCLK_SEL)) {
702 ret = -EIO;
703 goto tuning_error;
704 }
705 /*
706 * Assign tuning value as a ratio of maximum pass window based
707 * on temperature
708 */
709 if (temperature < -20000)
710 phase_delay = min(max_window + 4 * max_len - 24,
711 max_window +
712 DIV_ROUND_UP(13 * max_len, 16) * 4);
713 else if (temperature < 20000)
714 phase_delay = max_window + DIV_ROUND_UP(9 * max_len, 16) * 4;
715 else if (temperature < 40000)
716 phase_delay = max_window + DIV_ROUND_UP(8 * max_len, 16) * 4;
717 else if (temperature < 70000)
718 phase_delay = max_window + DIV_ROUND_UP(7 * max_len, 16) * 4;
719 else if (temperature < 90000)
720 phase_delay = max_window + DIV_ROUND_UP(5 * max_len, 16) * 4;
721 else if (temperature < 120000)
722 phase_delay = max_window + DIV_ROUND_UP(4 * max_len, 16) * 4;
723 else
724 phase_delay = max_window + DIV_ROUND_UP(3 * max_len, 16) * 4;
725
726 /*
727 * Stage 2: Search for a single point failure near the chosen tuning
728 * value in two steps. First in the +3 to +10 range and then in the
729 * +2 to -10 range. If found, move away from it in the appropriate
730 * direction by the appropriate amount depending on the temperature.
731 */
732 for (i = 3; i <= 10; i++) {
733 omap_hsmmc_set_dll(mmc, phase_delay + i);
734 if (mmc_send_tuning(mmc, opcode, NULL)) {
735 if (temperature < 10000)
736 phase_delay += i + 6;
737 else if (temperature < 20000)
738 phase_delay += i - 12;
739 else if (temperature < 70000)
740 phase_delay += i - 8;
741 else if (temperature < 90000)
742 phase_delay += i - 6;
743 else
744 phase_delay += i - 6;
745
746 goto single_failure_found;
747 }
748 }
749
750 for (i = 2; i >= -10; i--) {
751 omap_hsmmc_set_dll(mmc, phase_delay + i);
752 if (mmc_send_tuning(mmc, opcode, NULL)) {
753 if (temperature < 10000)
754 phase_delay += i + 12;
755 else if (temperature < 20000)
756 phase_delay += i + 8;
757 else if (temperature < 70000)
758 phase_delay += i + 8;
759 else if (temperature < 90000)
760 phase_delay += i + 10;
761 else
762 phase_delay += i + 12;
763
764 goto single_failure_found;
765 }
766 }
767
768 single_failure_found:
769
770 omap_hsmmc_set_dll(mmc, phase_delay);
771
772 mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD);
773 mmc_reset_controller_fsm(mmc_base, SYSCTL_SRC);
774
775 return 0;
776
777 tuning_error:
778
779 omap_hsmmc_disable_tuning(mmc);
780 mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD);
781 mmc_reset_controller_fsm(mmc_base, SYSCTL_SRC);
782
783 return ret;
784 }
785 #endif
786 #endif
787
mmc_enable_irq(struct mmc * mmc,struct mmc_cmd * cmd)788 static void mmc_enable_irq(struct mmc *mmc, struct mmc_cmd *cmd)
789 {
790 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
791 struct hsmmc *mmc_base = priv->base_addr;
792 u32 irq_mask = INT_EN_MASK;
793
794 /*
795 * TODO: Errata i802 indicates only DCRC interrupts can occur during
796 * tuning procedure and DCRC should be disabled. But see occurences
797 * of DEB, CIE, CEB, CCRC interupts during tuning procedure. These
798 * interrupts occur along with BRR, so the data is actually in the
799 * buffer. It has to be debugged why these interrutps occur
800 */
801 if (cmd && mmc_is_tuning_cmd(cmd->cmdidx))
802 irq_mask &= ~(IE_DEB | IE_DCRC | IE_CIE | IE_CEB | IE_CCRC);
803
804 writel(irq_mask, &mmc_base->ie);
805 }
806
omap_hsmmc_init_setup(struct mmc * mmc)807 static int omap_hsmmc_init_setup(struct mmc *mmc)
808 {
809 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
810 struct hsmmc *mmc_base;
811 unsigned int reg_val;
812 unsigned int dsor;
813 ulong start;
814
815 mmc_base = priv->base_addr;
816 mmc_board_init(mmc);
817
818 writel(readl(&mmc_base->sysconfig) | MMC_SOFTRESET,
819 &mmc_base->sysconfig);
820 start = get_timer(0);
821 while ((readl(&mmc_base->sysstatus) & RESETDONE) == 0) {
822 if (get_timer(0) - start > MAX_RETRY_MS) {
823 printf("%s: timedout waiting for cc2!\n", __func__);
824 return -ETIMEDOUT;
825 }
826 }
827 writel(readl(&mmc_base->sysctl) | SOFTRESETALL, &mmc_base->sysctl);
828 start = get_timer(0);
829 while ((readl(&mmc_base->sysctl) & SOFTRESETALL) != 0x0) {
830 if (get_timer(0) - start > MAX_RETRY_MS) {
831 printf("%s: timedout waiting for softresetall!\n",
832 __func__);
833 return -ETIMEDOUT;
834 }
835 }
836 #ifdef CONFIG_MMC_OMAP_HS_ADMA
837 reg_val = readl(&mmc_base->hl_hwinfo);
838 if (reg_val & MADMA_EN)
839 priv->controller_flags |= OMAP_HSMMC_USE_ADMA;
840 #endif
841
842 #if CONFIG_IS_ENABLED(DM_MMC)
843 reg_val = omap_hsmmc_set_capabilities(mmc);
844 omap_hsmmc_conf_bus_power(mmc, (reg_val & VS33_3V3SUP) ?
845 MMC_SIGNAL_VOLTAGE_330 : MMC_SIGNAL_VOLTAGE_180);
846 #else
847 writel(DTW_1_BITMODE | SDBP_PWROFF | SDVS_3V3, &mmc_base->hctl);
848 writel(readl(&mmc_base->capa) | VS33_3V3SUP | VS18_1V8SUP,
849 &mmc_base->capa);
850 #endif
851
852 reg_val = readl(&mmc_base->con) & RESERVED_MASK;
853
854 writel(CTPL_MMC_SD | reg_val | WPP_ACTIVEHIGH | CDP_ACTIVEHIGH |
855 MIT_CTO | DW8_1_4BITMODE | MODE_FUNC | STR_BLOCK |
856 HR_NOHOSTRESP | INIT_NOINIT | NOOPENDRAIN, &mmc_base->con);
857
858 dsor = 240;
859 mmc_reg_out(&mmc_base->sysctl, (ICE_MASK | DTO_MASK | CEN_MASK),
860 (ICE_STOP | DTO_15THDTO));
861 mmc_reg_out(&mmc_base->sysctl, ICE_MASK | CLKD_MASK,
862 (dsor << CLKD_OFFSET) | ICE_OSCILLATE);
863 start = get_timer(0);
864 while ((readl(&mmc_base->sysctl) & ICS_MASK) == ICS_NOTREADY) {
865 if (get_timer(0) - start > MAX_RETRY_MS) {
866 printf("%s: timedout waiting for ics!\n", __func__);
867 return -ETIMEDOUT;
868 }
869 }
870 writel(readl(&mmc_base->sysctl) | CEN_ENABLE, &mmc_base->sysctl);
871
872 writel(readl(&mmc_base->hctl) | SDBP_PWRON, &mmc_base->hctl);
873
874 mmc_enable_irq(mmc, NULL);
875
876 #if !CONFIG_IS_ENABLED(DM_MMC)
877 mmc_init_stream(mmc_base);
878 #endif
879
880 return 0;
881 }
882
883 /*
884 * MMC controller internal finite state machine reset
885 *
886 * Used to reset command or data internal state machines, using respectively
887 * SRC or SRD bit of SYSCTL register
888 */
mmc_reset_controller_fsm(struct hsmmc * mmc_base,u32 bit)889 static void mmc_reset_controller_fsm(struct hsmmc *mmc_base, u32 bit)
890 {
891 ulong start;
892
893 mmc_reg_out(&mmc_base->sysctl, bit, bit);
894
895 /*
896 * CMD(DAT) lines reset procedures are slightly different
897 * for OMAP3 and OMAP4(AM335x,OMAP5,DRA7xx).
898 * According to OMAP3 TRM:
899 * Set SRC(SRD) bit in MMCHS_SYSCTL register to 0x1 and wait until it
900 * returns to 0x0.
901 * According to OMAP4(AM335x,OMAP5,DRA7xx) TRMs, CMD(DATA) lines reset
902 * procedure steps must be as follows:
903 * 1. Initiate CMD(DAT) line reset by writing 0x1 to SRC(SRD) bit in
904 * MMCHS_SYSCTL register (SD_SYSCTL for AM335x).
905 * 2. Poll the SRC(SRD) bit until it is set to 0x1.
906 * 3. Wait until the SRC (SRD) bit returns to 0x0
907 * (reset procedure is completed).
908 */
909 #if defined(CONFIG_OMAP44XX) || defined(CONFIG_OMAP54XX) || \
910 defined(CONFIG_AM33XX) || defined(CONFIG_AM43XX)
911 if (!(readl(&mmc_base->sysctl) & bit)) {
912 start = get_timer(0);
913 while (!(readl(&mmc_base->sysctl) & bit)) {
914 if (get_timer(0) - start > MMC_TIMEOUT_MS)
915 return;
916 }
917 }
918 #endif
919 start = get_timer(0);
920 while ((readl(&mmc_base->sysctl) & bit) != 0) {
921 if (get_timer(0) - start > MAX_RETRY_MS) {
922 printf("%s: timedout waiting for sysctl %x to clear\n",
923 __func__, bit);
924 return;
925 }
926 }
927 }
928
929 #ifdef CONFIG_MMC_OMAP_HS_ADMA
omap_hsmmc_adma_desc(struct mmc * mmc,char * buf,u16 len,bool end)930 static void omap_hsmmc_adma_desc(struct mmc *mmc, char *buf, u16 len, bool end)
931 {
932 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
933 struct omap_hsmmc_adma_desc *desc;
934 u8 attr;
935
936 desc = &priv->adma_desc_table[priv->desc_slot];
937
938 attr = ADMA_DESC_ATTR_VALID | ADMA_DESC_TRANSFER_DATA;
939 if (!end)
940 priv->desc_slot++;
941 else
942 attr |= ADMA_DESC_ATTR_END;
943
944 desc->len = len;
945 desc->addr = (u32)buf;
946 desc->reserved = 0;
947 desc->attr = attr;
948 }
949
omap_hsmmc_prepare_adma_table(struct mmc * mmc,struct mmc_data * data)950 static void omap_hsmmc_prepare_adma_table(struct mmc *mmc,
951 struct mmc_data *data)
952 {
953 uint total_len = data->blocksize * data->blocks;
954 uint desc_count = DIV_ROUND_UP(total_len, ADMA_MAX_LEN);
955 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
956 int i = desc_count;
957 char *buf;
958
959 priv->desc_slot = 0;
960 priv->adma_desc_table = (struct omap_hsmmc_adma_desc *)
961 memalign(ARCH_DMA_MINALIGN, desc_count *
962 sizeof(struct omap_hsmmc_adma_desc));
963
964 if (data->flags & MMC_DATA_READ)
965 buf = data->dest;
966 else
967 buf = (char *)data->src;
968
969 while (--i) {
970 omap_hsmmc_adma_desc(mmc, buf, ADMA_MAX_LEN, false);
971 buf += ADMA_MAX_LEN;
972 total_len -= ADMA_MAX_LEN;
973 }
974
975 omap_hsmmc_adma_desc(mmc, buf, total_len, true);
976
977 flush_dcache_range((long)priv->adma_desc_table,
978 (long)priv->adma_desc_table +
979 ROUND(desc_count *
980 sizeof(struct omap_hsmmc_adma_desc),
981 ARCH_DMA_MINALIGN));
982 }
983
omap_hsmmc_prepare_data(struct mmc * mmc,struct mmc_data * data)984 static void omap_hsmmc_prepare_data(struct mmc *mmc, struct mmc_data *data)
985 {
986 struct hsmmc *mmc_base;
987 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
988 u32 val;
989 char *buf;
990
991 mmc_base = priv->base_addr;
992 omap_hsmmc_prepare_adma_table(mmc, data);
993
994 if (data->flags & MMC_DATA_READ)
995 buf = data->dest;
996 else
997 buf = (char *)data->src;
998
999 val = readl(&mmc_base->hctl);
1000 val |= DMA_SELECT;
1001 writel(val, &mmc_base->hctl);
1002
1003 val = readl(&mmc_base->con);
1004 val |= DMA_MASTER;
1005 writel(val, &mmc_base->con);
1006
1007 writel((u32)priv->adma_desc_table, &mmc_base->admasal);
1008
1009 flush_dcache_range((u32)buf,
1010 (u32)buf +
1011 ROUND(data->blocksize * data->blocks,
1012 ARCH_DMA_MINALIGN));
1013 }
1014
omap_hsmmc_dma_cleanup(struct mmc * mmc)1015 static void omap_hsmmc_dma_cleanup(struct mmc *mmc)
1016 {
1017 struct hsmmc *mmc_base;
1018 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
1019 u32 val;
1020
1021 mmc_base = priv->base_addr;
1022
1023 val = readl(&mmc_base->con);
1024 val &= ~DMA_MASTER;
1025 writel(val, &mmc_base->con);
1026
1027 val = readl(&mmc_base->hctl);
1028 val &= ~DMA_SELECT;
1029 writel(val, &mmc_base->hctl);
1030
1031 kfree(priv->adma_desc_table);
1032 }
1033 #else
1034 #define omap_hsmmc_adma_desc
1035 #define omap_hsmmc_prepare_adma_table
1036 #define omap_hsmmc_prepare_data
1037 #define omap_hsmmc_dma_cleanup
1038 #endif
1039
1040 #if !CONFIG_IS_ENABLED(DM_MMC)
omap_hsmmc_send_cmd(struct mmc * mmc,struct mmc_cmd * cmd,struct mmc_data * data)1041 static int omap_hsmmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
1042 struct mmc_data *data)
1043 {
1044 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
1045 #else
1046 static int omap_hsmmc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
1047 struct mmc_data *data)
1048 {
1049 struct omap_hsmmc_data *priv = dev_get_priv(dev);
1050 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
1051 struct mmc *mmc = upriv->mmc;
1052 #endif
1053 struct hsmmc *mmc_base;
1054 unsigned int flags, mmc_stat;
1055 ulong start;
1056 priv->last_cmd = cmd->cmdidx;
1057
1058 mmc_base = priv->base_addr;
1059
1060 if (cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION)
1061 return 0;
1062
1063 start = get_timer(0);
1064 while ((readl(&mmc_base->pstate) & (DATI_MASK | CMDI_MASK)) != 0) {
1065 if (get_timer(0) - start > MAX_RETRY_MS) {
1066 printf("%s: timedout waiting on cmd inhibit to clear\n",
1067 __func__);
1068 mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD);
1069 mmc_reset_controller_fsm(mmc_base, SYSCTL_SRC);
1070 return -ETIMEDOUT;
1071 }
1072 }
1073 writel(0xFFFFFFFF, &mmc_base->stat);
1074 if (readl(&mmc_base->stat)) {
1075 mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD);
1076 mmc_reset_controller_fsm(mmc_base, SYSCTL_SRC);
1077 }
1078
1079 /*
1080 * CMDREG
1081 * CMDIDX[13:8] : Command index
1082 * DATAPRNT[5] : Data Present Select
1083 * ENCMDIDX[4] : Command Index Check Enable
1084 * ENCMDCRC[3] : Command CRC Check Enable
1085 * RSPTYP[1:0]
1086 * 00 = No Response
1087 * 01 = Length 136
1088 * 10 = Length 48
1089 * 11 = Length 48 Check busy after response
1090 */
1091 /* Delay added before checking the status of frq change
1092 * retry not supported by mmc.c(core file)
1093 */
1094 if (cmd->cmdidx == SD_CMD_APP_SEND_SCR)
1095 udelay(50000); /* wait 50 ms */
1096
1097 if (!(cmd->resp_type & MMC_RSP_PRESENT))
1098 flags = 0;
1099 else if (cmd->resp_type & MMC_RSP_136)
1100 flags = RSP_TYPE_LGHT136 | CICE_NOCHECK;
1101 else if (cmd->resp_type & MMC_RSP_BUSY)
1102 flags = RSP_TYPE_LGHT48B;
1103 else
1104 flags = RSP_TYPE_LGHT48;
1105
1106 /* enable default flags */
1107 flags = flags | (CMD_TYPE_NORMAL | CICE_NOCHECK | CCCE_NOCHECK |
1108 MSBS_SGLEBLK);
1109 flags &= ~(ACEN_ENABLE | BCE_ENABLE | DE_ENABLE);
1110
1111 if (cmd->resp_type & MMC_RSP_CRC)
1112 flags |= CCCE_CHECK;
1113 if (cmd->resp_type & MMC_RSP_OPCODE)
1114 flags |= CICE_CHECK;
1115
1116 if (data) {
1117 if ((cmd->cmdidx == MMC_CMD_READ_MULTIPLE_BLOCK) ||
1118 (cmd->cmdidx == MMC_CMD_WRITE_MULTIPLE_BLOCK)) {
1119 flags |= (MSBS_MULTIBLK | BCE_ENABLE | ACEN_ENABLE);
1120 data->blocksize = 512;
1121 writel(data->blocksize | (data->blocks << 16),
1122 &mmc_base->blk);
1123 } else
1124 writel(data->blocksize | NBLK_STPCNT, &mmc_base->blk);
1125
1126 if (data->flags & MMC_DATA_READ)
1127 flags |= (DP_DATA | DDIR_READ);
1128 else
1129 flags |= (DP_DATA | DDIR_WRITE);
1130
1131 #ifdef CONFIG_MMC_OMAP_HS_ADMA
1132 if ((priv->controller_flags & OMAP_HSMMC_USE_ADMA) &&
1133 !mmc_is_tuning_cmd(cmd->cmdidx)) {
1134 omap_hsmmc_prepare_data(mmc, data);
1135 flags |= DE_ENABLE;
1136 }
1137 #endif
1138 }
1139
1140 mmc_enable_irq(mmc, cmd);
1141
1142 writel(cmd->cmdarg, &mmc_base->arg);
1143 udelay(20); /* To fix "No status update" error on eMMC */
1144 writel((cmd->cmdidx << 24) | flags, &mmc_base->cmd);
1145
1146 start = get_timer(0);
1147 do {
1148 mmc_stat = readl(&mmc_base->stat);
1149 if (get_timer(start) > MAX_RETRY_MS) {
1150 printf("%s : timeout: No status update\n", __func__);
1151 return -ETIMEDOUT;
1152 }
1153 } while (!mmc_stat);
1154
1155 if ((mmc_stat & IE_CTO) != 0) {
1156 mmc_reset_controller_fsm(mmc_base, SYSCTL_SRC);
1157 return -ETIMEDOUT;
1158 } else if ((mmc_stat & ERRI_MASK) != 0)
1159 return -1;
1160
1161 if (mmc_stat & CC_MASK) {
1162 writel(CC_MASK, &mmc_base->stat);
1163 if (cmd->resp_type & MMC_RSP_PRESENT) {
1164 if (cmd->resp_type & MMC_RSP_136) {
1165 /* response type 2 */
1166 cmd->response[3] = readl(&mmc_base->rsp10);
1167 cmd->response[2] = readl(&mmc_base->rsp32);
1168 cmd->response[1] = readl(&mmc_base->rsp54);
1169 cmd->response[0] = readl(&mmc_base->rsp76);
1170 } else
1171 /* response types 1, 1b, 3, 4, 5, 6 */
1172 cmd->response[0] = readl(&mmc_base->rsp10);
1173 }
1174 }
1175
1176 #ifdef CONFIG_MMC_OMAP_HS_ADMA
1177 if ((priv->controller_flags & OMAP_HSMMC_USE_ADMA) && data &&
1178 !mmc_is_tuning_cmd(cmd->cmdidx)) {
1179 u32 sz_mb, timeout;
1180
1181 if (mmc_stat & IE_ADMAE) {
1182 omap_hsmmc_dma_cleanup(mmc);
1183 return -EIO;
1184 }
1185
1186 sz_mb = DIV_ROUND_UP(data->blocksize * data->blocks, 1 << 20);
1187 timeout = sz_mb * DMA_TIMEOUT_PER_MB;
1188 if (timeout < MAX_RETRY_MS)
1189 timeout = MAX_RETRY_MS;
1190
1191 start = get_timer(0);
1192 do {
1193 mmc_stat = readl(&mmc_base->stat);
1194 if (mmc_stat & TC_MASK) {
1195 writel(readl(&mmc_base->stat) | TC_MASK,
1196 &mmc_base->stat);
1197 break;
1198 }
1199 if (get_timer(start) > timeout) {
1200 printf("%s : DMA timeout: No status update\n",
1201 __func__);
1202 return -ETIMEDOUT;
1203 }
1204 } while (1);
1205
1206 omap_hsmmc_dma_cleanup(mmc);
1207 return 0;
1208 }
1209 #endif
1210
1211 if (data && (data->flags & MMC_DATA_READ)) {
1212 mmc_read_data(mmc_base, data->dest,
1213 data->blocksize * data->blocks);
1214 } else if (data && (data->flags & MMC_DATA_WRITE)) {
1215 mmc_write_data(mmc_base, data->src,
1216 data->blocksize * data->blocks);
1217 }
1218 return 0;
1219 }
1220
1221 static int mmc_read_data(struct hsmmc *mmc_base, char *buf, unsigned int size)
1222 {
1223 unsigned int *output_buf = (unsigned int *)buf;
1224 unsigned int mmc_stat;
1225 unsigned int count;
1226
1227 /*
1228 * Start Polled Read
1229 */
1230 count = (size > MMCSD_SECTOR_SIZE) ? MMCSD_SECTOR_SIZE : size;
1231 count /= 4;
1232
1233 while (size) {
1234 ulong start = get_timer(0);
1235 do {
1236 mmc_stat = readl(&mmc_base->stat);
1237 if (get_timer(0) - start > MAX_RETRY_MS) {
1238 printf("%s: timedout waiting for status!\n",
1239 __func__);
1240 return -ETIMEDOUT;
1241 }
1242 } while (mmc_stat == 0);
1243
1244 if ((mmc_stat & (IE_DTO | IE_DCRC | IE_DEB)) != 0)
1245 mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD);
1246
1247 if ((mmc_stat & ERRI_MASK) != 0)
1248 return 1;
1249
1250 if (mmc_stat & BRR_MASK) {
1251 unsigned int k;
1252
1253 writel(readl(&mmc_base->stat) | BRR_MASK,
1254 &mmc_base->stat);
1255 for (k = 0; k < count; k++) {
1256 *output_buf = readl(&mmc_base->data);
1257 output_buf++;
1258 }
1259 size -= (count*4);
1260 }
1261
1262 if (mmc_stat & BWR_MASK)
1263 writel(readl(&mmc_base->stat) | BWR_MASK,
1264 &mmc_base->stat);
1265
1266 if (mmc_stat & TC_MASK) {
1267 writel(readl(&mmc_base->stat) | TC_MASK,
1268 &mmc_base->stat);
1269 break;
1270 }
1271 }
1272 return 0;
1273 }
1274
1275 #if CONFIG_IS_ENABLED(MMC_WRITE)
1276 static int mmc_write_data(struct hsmmc *mmc_base, const char *buf,
1277 unsigned int size)
1278 {
1279 unsigned int *input_buf = (unsigned int *)buf;
1280 unsigned int mmc_stat;
1281 unsigned int count;
1282
1283 /*
1284 * Start Polled Write
1285 */
1286 count = (size > MMCSD_SECTOR_SIZE) ? MMCSD_SECTOR_SIZE : size;
1287 count /= 4;
1288
1289 while (size) {
1290 ulong start = get_timer(0);
1291 do {
1292 mmc_stat = readl(&mmc_base->stat);
1293 if (get_timer(0) - start > MAX_RETRY_MS) {
1294 printf("%s: timedout waiting for status!\n",
1295 __func__);
1296 return -ETIMEDOUT;
1297 }
1298 } while (mmc_stat == 0);
1299
1300 if ((mmc_stat & (IE_DTO | IE_DCRC | IE_DEB)) != 0)
1301 mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD);
1302
1303 if ((mmc_stat & ERRI_MASK) != 0)
1304 return 1;
1305
1306 if (mmc_stat & BWR_MASK) {
1307 unsigned int k;
1308
1309 writel(readl(&mmc_base->stat) | BWR_MASK,
1310 &mmc_base->stat);
1311 for (k = 0; k < count; k++) {
1312 writel(*input_buf, &mmc_base->data);
1313 input_buf++;
1314 }
1315 size -= (count*4);
1316 }
1317
1318 if (mmc_stat & BRR_MASK)
1319 writel(readl(&mmc_base->stat) | BRR_MASK,
1320 &mmc_base->stat);
1321
1322 if (mmc_stat & TC_MASK) {
1323 writel(readl(&mmc_base->stat) | TC_MASK,
1324 &mmc_base->stat);
1325 break;
1326 }
1327 }
1328 return 0;
1329 }
1330 #else
1331 static int mmc_write_data(struct hsmmc *mmc_base, const char *buf,
1332 unsigned int size)
1333 {
1334 return -ENOTSUPP;
1335 }
1336 #endif
1337 static void omap_hsmmc_stop_clock(struct hsmmc *mmc_base)
1338 {
1339 writel(readl(&mmc_base->sysctl) & ~CEN_ENABLE, &mmc_base->sysctl);
1340 }
1341
1342 static void omap_hsmmc_start_clock(struct hsmmc *mmc_base)
1343 {
1344 writel(readl(&mmc_base->sysctl) | CEN_ENABLE, &mmc_base->sysctl);
1345 }
1346
1347 static void omap_hsmmc_set_clock(struct mmc *mmc)
1348 {
1349 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
1350 struct hsmmc *mmc_base;
1351 unsigned int dsor = 0;
1352 ulong start;
1353
1354 mmc_base = priv->base_addr;
1355 omap_hsmmc_stop_clock(mmc_base);
1356
1357 /* TODO: Is setting DTO required here? */
1358 mmc_reg_out(&mmc_base->sysctl, (ICE_MASK | DTO_MASK),
1359 (ICE_STOP | DTO_15THDTO));
1360
1361 if (mmc->clock != 0) {
1362 dsor = DIV_ROUND_UP(MMC_CLOCK_REFERENCE * 1000000, mmc->clock);
1363 if (dsor > CLKD_MAX)
1364 dsor = CLKD_MAX;
1365 } else {
1366 dsor = CLKD_MAX;
1367 }
1368
1369 mmc_reg_out(&mmc_base->sysctl, ICE_MASK | CLKD_MASK,
1370 (dsor << CLKD_OFFSET) | ICE_OSCILLATE);
1371
1372 start = get_timer(0);
1373 while ((readl(&mmc_base->sysctl) & ICS_MASK) == ICS_NOTREADY) {
1374 if (get_timer(0) - start > MAX_RETRY_MS) {
1375 printf("%s: timedout waiting for ics!\n", __func__);
1376 return;
1377 }
1378 }
1379
1380 priv->clock = MMC_CLOCK_REFERENCE * 1000000 / dsor;
1381 mmc->clock = priv->clock;
1382 omap_hsmmc_start_clock(mmc_base);
1383 }
1384
1385 static void omap_hsmmc_set_bus_width(struct mmc *mmc)
1386 {
1387 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
1388 struct hsmmc *mmc_base;
1389
1390 mmc_base = priv->base_addr;
1391 /* configue bus width */
1392 switch (mmc->bus_width) {
1393 case 8:
1394 writel(readl(&mmc_base->con) | DTW_8_BITMODE,
1395 &mmc_base->con);
1396 break;
1397
1398 case 4:
1399 writel(readl(&mmc_base->con) & ~DTW_8_BITMODE,
1400 &mmc_base->con);
1401 writel(readl(&mmc_base->hctl) | DTW_4_BITMODE,
1402 &mmc_base->hctl);
1403 break;
1404
1405 case 1:
1406 default:
1407 writel(readl(&mmc_base->con) & ~DTW_8_BITMODE,
1408 &mmc_base->con);
1409 writel(readl(&mmc_base->hctl) & ~DTW_4_BITMODE,
1410 &mmc_base->hctl);
1411 break;
1412 }
1413
1414 priv->bus_width = mmc->bus_width;
1415 }
1416
1417 #if !CONFIG_IS_ENABLED(DM_MMC)
1418 static int omap_hsmmc_set_ios(struct mmc *mmc)
1419 {
1420 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
1421 #else
1422 static int omap_hsmmc_set_ios(struct udevice *dev)
1423 {
1424 struct omap_hsmmc_data *priv = dev_get_priv(dev);
1425 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
1426 struct mmc *mmc = upriv->mmc;
1427 #endif
1428 struct hsmmc *mmc_base = priv->base_addr;
1429 int ret = 0;
1430
1431 if (priv->bus_width != mmc->bus_width)
1432 omap_hsmmc_set_bus_width(mmc);
1433
1434 if (priv->clock != mmc->clock)
1435 omap_hsmmc_set_clock(mmc);
1436
1437 if (mmc->clk_disable)
1438 omap_hsmmc_stop_clock(mmc_base);
1439 else
1440 omap_hsmmc_start_clock(mmc_base);
1441
1442 #if CONFIG_IS_ENABLED(DM_MMC)
1443 if (priv->mode != mmc->selected_mode)
1444 omap_hsmmc_set_timing(mmc);
1445
1446 #if CONFIG_IS_ENABLED(MMC_IO_VOLTAGE)
1447 if (priv->signal_voltage != mmc->signal_voltage)
1448 ret = omap_hsmmc_set_signal_voltage(mmc);
1449 #endif
1450 #endif
1451 return ret;
1452 }
1453
1454 #ifdef OMAP_HSMMC_USE_GPIO
1455 #if CONFIG_IS_ENABLED(DM_MMC)
1456 static int omap_hsmmc_getcd(struct udevice *dev)
1457 {
1458 int value = -1;
1459 #if CONFIG_IS_ENABLED(DM_GPIO)
1460 struct omap_hsmmc_data *priv = dev_get_priv(dev);
1461 value = dm_gpio_get_value(&priv->cd_gpio);
1462 #endif
1463 /* if no CD return as 1 */
1464 if (value < 0)
1465 return 1;
1466
1467 return value;
1468 }
1469
1470 static int omap_hsmmc_getwp(struct udevice *dev)
1471 {
1472 int value = 0;
1473 #if CONFIG_IS_ENABLED(DM_GPIO)
1474 struct omap_hsmmc_data *priv = dev_get_priv(dev);
1475 value = dm_gpio_get_value(&priv->wp_gpio);
1476 #endif
1477 /* if no WP return as 0 */
1478 if (value < 0)
1479 return 0;
1480 return value;
1481 }
1482 #else
1483 static int omap_hsmmc_getcd(struct mmc *mmc)
1484 {
1485 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
1486 int cd_gpio;
1487
1488 /* if no CD return as 1 */
1489 cd_gpio = priv->cd_gpio;
1490 if (cd_gpio < 0)
1491 return 1;
1492
1493 /* NOTE: assumes card detect signal is active-low */
1494 return !gpio_get_value(cd_gpio);
1495 }
1496
1497 static int omap_hsmmc_getwp(struct mmc *mmc)
1498 {
1499 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
1500 int wp_gpio;
1501
1502 /* if no WP return as 0 */
1503 wp_gpio = priv->wp_gpio;
1504 if (wp_gpio < 0)
1505 return 0;
1506
1507 /* NOTE: assumes write protect signal is active-high */
1508 return gpio_get_value(wp_gpio);
1509 }
1510 #endif
1511 #endif
1512
1513 #if CONFIG_IS_ENABLED(DM_MMC)
1514 static const struct dm_mmc_ops omap_hsmmc_ops = {
1515 .send_cmd = omap_hsmmc_send_cmd,
1516 .set_ios = omap_hsmmc_set_ios,
1517 #ifdef OMAP_HSMMC_USE_GPIO
1518 .get_cd = omap_hsmmc_getcd,
1519 .get_wp = omap_hsmmc_getwp,
1520 #endif
1521 #ifdef MMC_SUPPORTS_TUNING
1522 .execute_tuning = omap_hsmmc_execute_tuning,
1523 #endif
1524 .wait_dat0 = omap_hsmmc_wait_dat0,
1525 };
1526 #else
1527 static const struct mmc_ops omap_hsmmc_ops = {
1528 .send_cmd = omap_hsmmc_send_cmd,
1529 .set_ios = omap_hsmmc_set_ios,
1530 .init = omap_hsmmc_init_setup,
1531 #ifdef OMAP_HSMMC_USE_GPIO
1532 .getcd = omap_hsmmc_getcd,
1533 .getwp = omap_hsmmc_getwp,
1534 #endif
1535 };
1536 #endif
1537
1538 #if !CONFIG_IS_ENABLED(DM_MMC)
1539 int omap_mmc_init(int dev_index, uint host_caps_mask, uint f_max, int cd_gpio,
1540 int wp_gpio)
1541 {
1542 struct mmc *mmc;
1543 struct omap_hsmmc_data *priv;
1544 struct mmc_config *cfg;
1545 uint host_caps_val;
1546
1547 priv = calloc(1, sizeof(*priv));
1548 if (priv == NULL)
1549 return -1;
1550
1551 host_caps_val = MMC_MODE_4BIT | MMC_MODE_HS_52MHz | MMC_MODE_HS;
1552
1553 switch (dev_index) {
1554 case 0:
1555 priv->base_addr = (struct hsmmc *)OMAP_HSMMC1_BASE;
1556 break;
1557 #ifdef OMAP_HSMMC2_BASE
1558 case 1:
1559 priv->base_addr = (struct hsmmc *)OMAP_HSMMC2_BASE;
1560 #if (defined(CONFIG_OMAP44XX) || defined(CONFIG_OMAP54XX) || \
1561 defined(CONFIG_DRA7XX) || defined(CONFIG_AM33XX) || \
1562 defined(CONFIG_AM43XX) || defined(CONFIG_SOC_KEYSTONE)) && \
1563 defined(CONFIG_HSMMC2_8BIT)
1564 /* Enable 8-bit interface for eMMC on OMAP4/5 or DRA7XX */
1565 host_caps_val |= MMC_MODE_8BIT;
1566 #endif
1567 break;
1568 #endif
1569 #ifdef OMAP_HSMMC3_BASE
1570 case 2:
1571 priv->base_addr = (struct hsmmc *)OMAP_HSMMC3_BASE;
1572 #if defined(CONFIG_DRA7XX) && defined(CONFIG_HSMMC3_8BIT)
1573 /* Enable 8-bit interface for eMMC on DRA7XX */
1574 host_caps_val |= MMC_MODE_8BIT;
1575 #endif
1576 break;
1577 #endif
1578 default:
1579 priv->base_addr = (struct hsmmc *)OMAP_HSMMC1_BASE;
1580 return 1;
1581 }
1582 #ifdef OMAP_HSMMC_USE_GPIO
1583 /* on error gpio values are set to -1, which is what we want */
1584 priv->cd_gpio = omap_mmc_setup_gpio_in(cd_gpio, "mmc_cd");
1585 priv->wp_gpio = omap_mmc_setup_gpio_in(wp_gpio, "mmc_wp");
1586 #endif
1587
1588 cfg = &priv->cfg;
1589
1590 cfg->name = "OMAP SD/MMC";
1591 cfg->ops = &omap_hsmmc_ops;
1592
1593 cfg->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
1594 cfg->host_caps = host_caps_val & ~host_caps_mask;
1595
1596 cfg->f_min = 400000;
1597
1598 if (f_max != 0)
1599 cfg->f_max = f_max;
1600 else {
1601 if (cfg->host_caps & MMC_MODE_HS) {
1602 if (cfg->host_caps & MMC_MODE_HS_52MHz)
1603 cfg->f_max = 52000000;
1604 else
1605 cfg->f_max = 26000000;
1606 } else
1607 cfg->f_max = 20000000;
1608 }
1609
1610 cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
1611
1612 #if defined(CONFIG_OMAP34XX)
1613 /*
1614 * Silicon revs 2.1 and older do not support multiblock transfers.
1615 */
1616 if ((get_cpu_family() == CPU_OMAP34XX) && (get_cpu_rev() <= CPU_3XX_ES21))
1617 cfg->b_max = 1;
1618 #endif
1619
1620 mmc = mmc_create(cfg, priv);
1621 if (mmc == NULL)
1622 return -1;
1623
1624 return 0;
1625 }
1626 #else
1627
1628 #ifdef CONFIG_IODELAY_RECALIBRATION
1629 static struct pad_conf_entry *
1630 omap_hsmmc_get_pad_conf_entry(const fdt32_t *pinctrl, int count)
1631 {
1632 int index = 0;
1633 struct pad_conf_entry *padconf;
1634
1635 padconf = (struct pad_conf_entry *)malloc(sizeof(*padconf) * count);
1636 if (!padconf) {
1637 debug("failed to allocate memory\n");
1638 return 0;
1639 }
1640
1641 while (index < count) {
1642 padconf[index].offset = fdt32_to_cpu(pinctrl[2 * index]);
1643 padconf[index].val = fdt32_to_cpu(pinctrl[2 * index + 1]);
1644 index++;
1645 }
1646
1647 return padconf;
1648 }
1649
1650 static struct iodelay_cfg_entry *
1651 omap_hsmmc_get_iodelay_cfg_entry(const fdt32_t *pinctrl, int count)
1652 {
1653 int index = 0;
1654 struct iodelay_cfg_entry *iodelay;
1655
1656 iodelay = (struct iodelay_cfg_entry *)malloc(sizeof(*iodelay) * count);
1657 if (!iodelay) {
1658 debug("failed to allocate memory\n");
1659 return 0;
1660 }
1661
1662 while (index < count) {
1663 iodelay[index].offset = fdt32_to_cpu(pinctrl[3 * index]);
1664 iodelay[index].a_delay = fdt32_to_cpu(pinctrl[3 * index + 1]);
1665 iodelay[index].g_delay = fdt32_to_cpu(pinctrl[3 * index + 2]);
1666 index++;
1667 }
1668
1669 return iodelay;
1670 }
1671
1672 static const fdt32_t *omap_hsmmc_get_pinctrl_entry(u32 phandle,
1673 const char *name, int *len)
1674 {
1675 const void *fdt = gd->fdt_blob;
1676 int offset;
1677 const fdt32_t *pinctrl;
1678
1679 offset = fdt_node_offset_by_phandle(fdt, phandle);
1680 if (offset < 0) {
1681 debug("failed to get pinctrl node %s.\n",
1682 fdt_strerror(offset));
1683 return 0;
1684 }
1685
1686 pinctrl = fdt_getprop(fdt, offset, name, len);
1687 if (!pinctrl) {
1688 debug("failed to get property %s\n", name);
1689 return 0;
1690 }
1691
1692 return pinctrl;
1693 }
1694
1695 static uint32_t omap_hsmmc_get_pad_conf_phandle(struct mmc *mmc,
1696 char *prop_name)
1697 {
1698 const void *fdt = gd->fdt_blob;
1699 const __be32 *phandle;
1700 int node = dev_of_offset(mmc->dev);
1701
1702 phandle = fdt_getprop(fdt, node, prop_name, NULL);
1703 if (!phandle) {
1704 debug("failed to get property %s\n", prop_name);
1705 return 0;
1706 }
1707
1708 return fdt32_to_cpu(*phandle);
1709 }
1710
1711 static uint32_t omap_hsmmc_get_iodelay_phandle(struct mmc *mmc,
1712 char *prop_name)
1713 {
1714 const void *fdt = gd->fdt_blob;
1715 const __be32 *phandle;
1716 int len;
1717 int count;
1718 int node = dev_of_offset(mmc->dev);
1719
1720 phandle = fdt_getprop(fdt, node, prop_name, &len);
1721 if (!phandle) {
1722 debug("failed to get property %s\n", prop_name);
1723 return 0;
1724 }
1725
1726 /* No manual mode iodelay values if count < 2 */
1727 count = len / sizeof(*phandle);
1728 if (count < 2)
1729 return 0;
1730
1731 return fdt32_to_cpu(*(phandle + 1));
1732 }
1733
1734 static struct pad_conf_entry *
1735 omap_hsmmc_get_pad_conf(struct mmc *mmc, char *prop_name, int *npads)
1736 {
1737 int len;
1738 int count;
1739 struct pad_conf_entry *padconf;
1740 u32 phandle;
1741 const fdt32_t *pinctrl;
1742
1743 phandle = omap_hsmmc_get_pad_conf_phandle(mmc, prop_name);
1744 if (!phandle)
1745 return ERR_PTR(-EINVAL);
1746
1747 pinctrl = omap_hsmmc_get_pinctrl_entry(phandle, "pinctrl-single,pins",
1748 &len);
1749 if (!pinctrl)
1750 return ERR_PTR(-EINVAL);
1751
1752 count = (len / sizeof(*pinctrl)) / 2;
1753 padconf = omap_hsmmc_get_pad_conf_entry(pinctrl, count);
1754 if (!padconf)
1755 return ERR_PTR(-EINVAL);
1756
1757 *npads = count;
1758
1759 return padconf;
1760 }
1761
1762 static struct iodelay_cfg_entry *
1763 omap_hsmmc_get_iodelay(struct mmc *mmc, char *prop_name, int *niodelay)
1764 {
1765 int len;
1766 int count;
1767 struct iodelay_cfg_entry *iodelay;
1768 u32 phandle;
1769 const fdt32_t *pinctrl;
1770
1771 phandle = omap_hsmmc_get_iodelay_phandle(mmc, prop_name);
1772 /* Not all modes have manual mode iodelay values. So its not fatal */
1773 if (!phandle)
1774 return 0;
1775
1776 pinctrl = omap_hsmmc_get_pinctrl_entry(phandle, "pinctrl-pin-array",
1777 &len);
1778 if (!pinctrl)
1779 return ERR_PTR(-EINVAL);
1780
1781 count = (len / sizeof(*pinctrl)) / 3;
1782 iodelay = omap_hsmmc_get_iodelay_cfg_entry(pinctrl, count);
1783 if (!iodelay)
1784 return ERR_PTR(-EINVAL);
1785
1786 *niodelay = count;
1787
1788 return iodelay;
1789 }
1790
1791 static struct omap_hsmmc_pinctrl_state *
1792 omap_hsmmc_get_pinctrl_by_mode(struct mmc *mmc, char *mode)
1793 {
1794 int index;
1795 int npads = 0;
1796 int niodelays = 0;
1797 const void *fdt = gd->fdt_blob;
1798 int node = dev_of_offset(mmc->dev);
1799 char prop_name[11];
1800 struct omap_hsmmc_pinctrl_state *pinctrl_state;
1801
1802 pinctrl_state = (struct omap_hsmmc_pinctrl_state *)
1803 malloc(sizeof(*pinctrl_state));
1804 if (!pinctrl_state) {
1805 debug("failed to allocate memory\n");
1806 return 0;
1807 }
1808
1809 index = fdt_stringlist_search(fdt, node, "pinctrl-names", mode);
1810 if (index < 0) {
1811 debug("fail to find %s mode %s\n", mode, fdt_strerror(index));
1812 goto err_pinctrl_state;
1813 }
1814
1815 sprintf(prop_name, "pinctrl-%d", index);
1816
1817 pinctrl_state->padconf = omap_hsmmc_get_pad_conf(mmc, prop_name,
1818 &npads);
1819 if (IS_ERR(pinctrl_state->padconf))
1820 goto err_pinctrl_state;
1821 pinctrl_state->npads = npads;
1822
1823 pinctrl_state->iodelay = omap_hsmmc_get_iodelay(mmc, prop_name,
1824 &niodelays);
1825 if (IS_ERR(pinctrl_state->iodelay))
1826 goto err_padconf;
1827 pinctrl_state->niodelays = niodelays;
1828
1829 return pinctrl_state;
1830
1831 err_padconf:
1832 kfree(pinctrl_state->padconf);
1833
1834 err_pinctrl_state:
1835 kfree(pinctrl_state);
1836 return 0;
1837 }
1838
1839 #define OMAP_HSMMC_SETUP_PINCTRL(capmask, mode, optional) \
1840 do { \
1841 struct omap_hsmmc_pinctrl_state *s = NULL; \
1842 char str[20]; \
1843 if (!(cfg->host_caps & capmask)) \
1844 break; \
1845 \
1846 if (priv->hw_rev) { \
1847 sprintf(str, "%s-%s", #mode, priv->hw_rev); \
1848 s = omap_hsmmc_get_pinctrl_by_mode(mmc, str); \
1849 } \
1850 \
1851 if (!s) \
1852 s = omap_hsmmc_get_pinctrl_by_mode(mmc, #mode); \
1853 \
1854 if (!s && !optional) { \
1855 debug("%s: no pinctrl for %s\n", \
1856 mmc->dev->name, #mode); \
1857 cfg->host_caps &= ~(capmask); \
1858 } else { \
1859 priv->mode##_pinctrl_state = s; \
1860 } \
1861 } while (0)
1862
1863 static int omap_hsmmc_get_pinctrl_state(struct mmc *mmc)
1864 {
1865 struct omap_hsmmc_data *priv = omap_hsmmc_get_data(mmc);
1866 struct mmc_config *cfg = omap_hsmmc_get_cfg(mmc);
1867 struct omap_hsmmc_pinctrl_state *default_pinctrl;
1868
1869 if (!(priv->controller_flags & OMAP_HSMMC_REQUIRE_IODELAY))
1870 return 0;
1871
1872 default_pinctrl = omap_hsmmc_get_pinctrl_by_mode(mmc, "default");
1873 if (!default_pinctrl) {
1874 printf("no pinctrl state for default mode\n");
1875 return -EINVAL;
1876 }
1877
1878 priv->default_pinctrl_state = default_pinctrl;
1879
1880 OMAP_HSMMC_SETUP_PINCTRL(MMC_CAP(UHS_SDR104), sdr104, false);
1881 OMAP_HSMMC_SETUP_PINCTRL(MMC_CAP(UHS_SDR50), sdr50, false);
1882 OMAP_HSMMC_SETUP_PINCTRL(MMC_CAP(UHS_DDR50), ddr50, false);
1883 OMAP_HSMMC_SETUP_PINCTRL(MMC_CAP(UHS_SDR25), sdr25, false);
1884 OMAP_HSMMC_SETUP_PINCTRL(MMC_CAP(UHS_SDR12), sdr12, false);
1885
1886 OMAP_HSMMC_SETUP_PINCTRL(MMC_CAP(MMC_HS_200), hs200_1_8v, false);
1887 OMAP_HSMMC_SETUP_PINCTRL(MMC_CAP(MMC_DDR_52), ddr_1_8v, false);
1888 OMAP_HSMMC_SETUP_PINCTRL(MMC_MODE_HS, hs, true);
1889
1890 return 0;
1891 }
1892 #endif
1893
1894 #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
1895 #ifdef CONFIG_OMAP54XX
1896 __weak const struct mmc_platform_fixups *platform_fixups_mmc(uint32_t addr)
1897 {
1898 return NULL;
1899 }
1900 #endif
1901
1902 static int omap_hsmmc_of_to_plat(struct udevice *dev)
1903 {
1904 struct omap_hsmmc_plat *plat = dev_get_plat(dev);
1905 struct omap_mmc_of_data *of_data = (void *)dev_get_driver_data(dev);
1906
1907 struct mmc_config *cfg = &plat->cfg;
1908 #ifdef CONFIG_OMAP54XX
1909 const struct mmc_platform_fixups *fixups;
1910 #endif
1911 const void *fdt = gd->fdt_blob;
1912 int node = dev_of_offset(dev);
1913 int ret;
1914
1915 plat->base_addr = map_physmem(dev_read_addr(dev),
1916 sizeof(struct hsmmc *),
1917 MAP_NOCACHE);
1918
1919 ret = mmc_of_parse(dev, cfg);
1920 if (ret < 0)
1921 return ret;
1922
1923 if (!cfg->f_max)
1924 cfg->f_max = 52000000;
1925 cfg->host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
1926 cfg->f_min = 400000;
1927 cfg->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
1928 cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
1929 if (fdtdec_get_bool(fdt, node, "ti,dual-volt"))
1930 plat->controller_flags |= OMAP_HSMMC_SUPPORTS_DUAL_VOLT;
1931 if (fdtdec_get_bool(fdt, node, "no-1-8-v"))
1932 plat->controller_flags |= OMAP_HSMMC_NO_1_8_V;
1933 if (of_data)
1934 plat->controller_flags |= of_data->controller_flags;
1935
1936 #ifdef CONFIG_OMAP54XX
1937 fixups = platform_fixups_mmc(dev_read_addr(dev));
1938 if (fixups) {
1939 plat->hw_rev = fixups->hw_rev;
1940 cfg->host_caps &= ~fixups->unsupported_caps;
1941 cfg->f_max = fixups->max_freq;
1942 }
1943 #endif
1944
1945 return 0;
1946 }
1947 #endif
1948
1949 #ifdef CONFIG_BLK
1950
1951 static int omap_hsmmc_bind(struct udevice *dev)
1952 {
1953 struct omap_hsmmc_plat *plat = dev_get_plat(dev);
1954 plat->mmc = calloc(1, sizeof(struct mmc));
1955 return mmc_bind(dev, plat->mmc, &plat->cfg);
1956 }
1957 #endif
1958 static int omap_hsmmc_probe(struct udevice *dev)
1959 {
1960 struct omap_hsmmc_plat *plat = dev_get_plat(dev);
1961 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
1962 struct omap_hsmmc_data *priv = dev_get_priv(dev);
1963 struct mmc_config *cfg = &plat->cfg;
1964 struct mmc *mmc;
1965 #ifdef CONFIG_IODELAY_RECALIBRATION
1966 int ret;
1967 #endif
1968
1969 cfg->name = "OMAP SD/MMC";
1970 priv->base_addr = plat->base_addr;
1971 priv->controller_flags = plat->controller_flags;
1972 priv->hw_rev = plat->hw_rev;
1973
1974 #ifdef CONFIG_BLK
1975 mmc = plat->mmc;
1976 #else
1977 mmc = mmc_create(cfg, priv);
1978 if (mmc == NULL)
1979 return -1;
1980 #endif
1981 #if CONFIG_IS_ENABLED(DM_REGULATOR)
1982 device_get_supply_regulator(dev, "pbias-supply",
1983 &priv->pbias_supply);
1984 #endif
1985 #if defined(OMAP_HSMMC_USE_GPIO)
1986 #if CONFIG_IS_ENABLED(OF_CONTROL) && CONFIG_IS_ENABLED(DM_GPIO)
1987 gpio_request_by_name(dev, "cd-gpios", 0, &priv->cd_gpio, GPIOD_IS_IN);
1988 gpio_request_by_name(dev, "wp-gpios", 0, &priv->wp_gpio, GPIOD_IS_IN);
1989 #endif
1990 #endif
1991
1992 mmc->dev = dev;
1993 upriv->mmc = mmc;
1994
1995 #ifdef CONFIG_IODELAY_RECALIBRATION
1996 ret = omap_hsmmc_get_pinctrl_state(mmc);
1997 /*
1998 * disable high speed modes for the platforms that require IO delay
1999 * and for which we don't have this information
2000 */
2001 if ((ret < 0) &&
2002 (priv->controller_flags & OMAP_HSMMC_REQUIRE_IODELAY)) {
2003 priv->controller_flags &= ~OMAP_HSMMC_REQUIRE_IODELAY;
2004 cfg->host_caps &= ~(MMC_CAP(MMC_HS_200) | MMC_CAP(MMC_DDR_52) |
2005 UHS_CAPS);
2006 }
2007 #endif
2008
2009 return omap_hsmmc_init_setup(mmc);
2010 }
2011
2012 #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
2013
2014 static const struct omap_mmc_of_data dra7_mmc_of_data = {
2015 .controller_flags = OMAP_HSMMC_REQUIRE_IODELAY,
2016 };
2017
2018 static const struct udevice_id omap_hsmmc_ids[] = {
2019 { .compatible = "ti,omap3-hsmmc" },
2020 { .compatible = "ti,omap4-hsmmc" },
2021 { .compatible = "ti,am33xx-hsmmc" },
2022 { .compatible = "ti,dra7-hsmmc", .data = (ulong)&dra7_mmc_of_data },
2023 { }
2024 };
2025 #endif
2026
2027 U_BOOT_DRIVER(omap_hsmmc) = {
2028 .name = "omap_hsmmc",
2029 .id = UCLASS_MMC,
2030 #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
2031 .of_match = omap_hsmmc_ids,
2032 .of_to_plat = omap_hsmmc_of_to_plat,
2033 .plat_auto = sizeof(struct omap_hsmmc_plat),
2034 #endif
2035 #ifdef CONFIG_BLK
2036 .bind = omap_hsmmc_bind,
2037 #endif
2038 .ops = &omap_hsmmc_ops,
2039 .probe = omap_hsmmc_probe,
2040 .priv_auto = sizeof(struct omap_hsmmc_data),
2041 #if !CONFIG_IS_ENABLED(OF_CONTROL)
2042 .flags = DM_FLAG_PRE_RELOC,
2043 #endif
2044 };
2045 #endif
2046