3 * Texas Instruments, <www.ti.com>
4 * Sukumar Ghorai <s-ghorai@ti.com>
6 * See file CREDITS for list of people who contributed to this
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
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.
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,
35 #include <asm/arch/mmc_host_def.h>
36 #include <asm/arch/sys_proto.h>
38 /* common definitions for all OMAPs */
39 #define SYSCTL_SRC (1 << 25)
40 #define SYSCTL_SRD (1 << 26)
42 struct omap_hsmmc_data {
43 struct hsmmc *base_addr;
48 /* If we fail after 1 second wait, something is really bad */
49 #define MAX_RETRY_MS 1000
51 static int mmc_read_data(struct hsmmc *mmc_base, char *buf, unsigned int size);
52 static int mmc_write_data(struct hsmmc *mmc_base, const char *buf,
54 static struct mmc hsmmc_dev[3];
55 static struct omap_hsmmc_data hsmmc_dev_data[3];
57 #if (defined(CONFIG_OMAP_GPIO) && !defined(CONFIG_SPL_BUILD)) || \
58 (defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_GPIO_SUPPORT))
59 static int omap_mmc_setup_gpio_in(int gpio, const char *label)
61 if (!gpio_is_valid(gpio))
64 if (gpio_request(gpio, label) < 0)
67 if (gpio_direction_input(gpio) < 0)
73 static int omap_mmc_getcd(struct mmc *mmc)
75 int cd_gpio = ((struct omap_hsmmc_data *)mmc->priv)->cd_gpio;
76 return gpio_get_value(cd_gpio);
79 static int omap_mmc_getwp(struct mmc *mmc)
81 int wp_gpio = ((struct omap_hsmmc_data *)mmc->priv)->wp_gpio;
82 return gpio_get_value(wp_gpio);
85 static inline int omap_mmc_setup_gpio_in(int gpio, const char *label)
90 #define omap_mmc_getcd NULL
91 #define omap_mmc_getwp NULL
94 #if defined(CONFIG_OMAP44XX) && defined(CONFIG_TWL6030_POWER)
95 static void omap4_vmmc_pbias_config(struct mmc *mmc)
99 value = readl((*ctrl)->control_pbiaslite);
100 value &= ~(MMC1_PBIASLITE_PWRDNZ | MMC1_PWRDNZ);
101 writel(value, (*ctrl)->control_pbiaslite);
103 twl6030_power_mmc_init();
104 value = readl((*ctrl)->control_pbiaslite);
105 value |= MMC1_PBIASLITE_VMODE | MMC1_PBIASLITE_PWRDNZ | MMC1_PWRDNZ;
106 writel(value, (*ctrl)->control_pbiaslite);
110 #if defined(CONFIG_OMAP54XX) && defined(CONFIG_PALMAS_POWER)
111 static void omap5_pbias_config(struct mmc *mmc)
115 value = readl((*ctrl)->control_pbias);
116 value &= ~SDCARD_PWRDNZ;
117 writel(value, (*ctrl)->control_pbias);
118 udelay(10); /* wait 10 us */
119 value &= ~SDCARD_BIAS_PWRDNZ;
120 writel(value, (*ctrl)->control_pbias);
122 palmas_mmc1_poweron_ldo();
124 value = readl((*ctrl)->control_pbias);
125 value |= SDCARD_BIAS_PWRDNZ;
126 writel(value, (*ctrl)->control_pbias);
127 udelay(150); /* wait 150 us */
128 value |= SDCARD_PWRDNZ;
129 writel(value, (*ctrl)->control_pbias);
130 udelay(150); /* wait 150 us */
134 static void mmc_board_init(struct mmc *mmc)
136 #if defined(CONFIG_OMAP34XX)
137 t2_t *t2_base = (t2_t *)T2_BASE;
138 struct prcm *prcm_base = (struct prcm *)PRCM_BASE;
141 pbias_lite = readl(&t2_base->pbias_lite);
142 pbias_lite &= ~(PBIASLITEPWRDNZ1 | PBIASLITEPWRDNZ0);
143 writel(pbias_lite, &t2_base->pbias_lite);
145 #if defined(CONFIG_TWL4030_POWER)
146 twl4030_power_mmc_init();
147 mdelay(100); /* ramp-up delay from Linux code */
149 #if defined(CONFIG_OMAP34XX)
150 writel(pbias_lite | PBIASLITEPWRDNZ1 |
151 PBIASSPEEDCTRL0 | PBIASLITEPWRDNZ0,
152 &t2_base->pbias_lite);
154 writel(readl(&t2_base->devconf0) | MMCSDIO1ADPCLKISEL,
157 writel(readl(&t2_base->devconf1) | MMCSDIO2ADPCLKISEL,
160 /* Change from default of 52MHz to 26MHz if necessary */
161 if (!(mmc->host_caps & MMC_MODE_HS_52MHz))
162 writel(readl(&t2_base->ctl_prog_io1) & ~CTLPROGIO1SPEEDCTRL,
163 &t2_base->ctl_prog_io1);
165 writel(readl(&prcm_base->fclken1_core) |
166 EN_MMC1 | EN_MMC2 | EN_MMC3,
167 &prcm_base->fclken1_core);
169 writel(readl(&prcm_base->iclken1_core) |
170 EN_MMC1 | EN_MMC2 | EN_MMC3,
171 &prcm_base->iclken1_core);
174 #if defined(CONFIG_OMAP44XX) && defined(CONFIG_TWL6030_POWER)
175 /* PBIAS config needed for MMC1 only */
176 if (mmc->block_dev.dev == 0)
177 omap4_vmmc_pbias_config(mmc);
179 #if defined(CONFIG_OMAP54XX) && defined(CONFIG_PALMAS_POWER)
180 if (mmc->block_dev.dev == 0)
181 omap5_pbias_config(mmc);
185 void mmc_init_stream(struct hsmmc *mmc_base)
189 writel(readl(&mmc_base->con) | INIT_INITSTREAM, &mmc_base->con);
191 writel(MMC_CMD0, &mmc_base->cmd);
192 start = get_timer(0);
193 while (!(readl(&mmc_base->stat) & CC_MASK)) {
194 if (get_timer(start) > MAX_RETRY_MS) {
195 printf("%s: timeout waiting for cc!\n", __func__);
199 writel(CC_MASK, &mmc_base->stat)
201 writel(MMC_CMD0, &mmc_base->cmd)
203 start = get_timer(0);
204 while (!(readl(&mmc_base->stat) & CC_MASK)) {
205 if (get_timer(start) > MAX_RETRY_MS) {
206 printf("%s: timeout waiting for cc2!\n", __func__);
210 writel(readl(&mmc_base->con) & ~INIT_INITSTREAM, &mmc_base->con);
213 static int mmc_init_setup(struct mmc *mmc)
215 struct omap_hsmmc_data *priv_data = mmc->priv;
216 struct hsmmc *mmc_base = priv_data->base_addr;
217 unsigned int reg_val;
223 writel(readl(&mmc_base->sysconfig) | MMC_SOFTRESET,
224 &mmc_base->sysconfig);
225 start = get_timer(0);
226 while ((readl(&mmc_base->sysstatus) & RESETDONE) == 0) {
227 if (get_timer(start) > MAX_RETRY_MS) {
228 printf("%s: timeout waiting for cc2!\n", __func__);
232 writel(readl(&mmc_base->sysctl) | SOFTRESETALL, &mmc_base->sysctl);
233 start = get_timer(0);
234 while ((readl(&mmc_base->sysctl) & SOFTRESETALL) != 0x0) {
235 if (get_timer(start) > MAX_RETRY_MS) {
236 printf("%s: timeout waiting for softresetall!\n",
241 writel(DTW_1_BITMODE | SDBP_PWROFF | SDVS_3V0, &mmc_base->hctl);
242 writel(readl(&mmc_base->capa) | VS30_3V0SUP | VS18_1V8SUP,
245 reg_val = readl(&mmc_base->con) & RESERVED_MASK;
247 writel(CTPL_MMC_SD | reg_val | WPP_ACTIVEHIGH | CDP_ACTIVEHIGH |
248 MIT_CTO | DW8_1_4BITMODE | MODE_FUNC | STR_BLOCK |
249 HR_NOHOSTRESP | INIT_NOINIT | NOOPENDRAIN, &mmc_base->con);
252 mmc_reg_out(&mmc_base->sysctl, (ICE_MASK | DTO_MASK | CEN_MASK),
253 (ICE_STOP | DTO_15THDTO | CEN_DISABLE));
254 mmc_reg_out(&mmc_base->sysctl, ICE_MASK | CLKD_MASK,
255 (dsor << CLKD_OFFSET) | ICE_OSCILLATE);
256 start = get_timer(0);
257 while ((readl(&mmc_base->sysctl) & ICS_MASK) == ICS_NOTREADY) {
258 if (get_timer(start) > MAX_RETRY_MS) {
259 printf("%s: timeout waiting for ics!\n", __func__);
263 writel(readl(&mmc_base->sysctl) | CEN_ENABLE, &mmc_base->sysctl);
265 writel(readl(&mmc_base->hctl) | SDBP_PWRON, &mmc_base->hctl);
267 writel(IE_BADA | IE_CERR | IE_DEB | IE_DCRC | IE_DTO | IE_CIE |
268 IE_CEB | IE_CCRC | IE_CTO | IE_BRR | IE_BWR | IE_TC | IE_CC,
271 mmc_init_stream(mmc_base);
277 * MMC controller internal finite state machine reset
279 * Used to reset command or data internal state machines, using respectively
280 * SRC or SRD bit of SYSCTL register
282 static void mmc_reset_controller_fsm(struct hsmmc *mmc_base, u32 bit)
286 mmc_reg_out(&mmc_base->sysctl, bit, bit);
288 start = get_timer(0);
289 while ((readl(&mmc_base->sysctl) & bit) != 0) {
290 if (get_timer(0) - start > MAX_RETRY_MS) {
291 printf("%s: timedout waiting for sysctl %x to clear\n",
298 static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
299 struct mmc_data *data)
301 struct omap_hsmmc_data *priv_data = mmc->priv;
302 struct hsmmc *mmc_base = priv_data->base_addr;
303 unsigned int flags, mmc_stat;
306 start = get_timer(0);
307 while ((readl(&mmc_base->pstate) & (DATI_MASK | CMDI_MASK)) != 0) {
308 if (get_timer(start) > MAX_RETRY_MS) {
309 printf("%s: timeout waiting on cmd inhibit to clear\n",
314 writel(0xFFFFFFFF, &mmc_base->stat);
315 start = get_timer(0);
316 while (readl(&mmc_base->stat)) {
317 if (get_timer(start) > MAX_RETRY_MS) {
318 printf("%s: timeout waiting for stat!\n", __func__);
324 * CMDIDX[13:8] : Command index
325 * DATAPRNT[5] : Data Present Select
326 * ENCMDIDX[4] : Command Index Check Enable
327 * ENCMDCRC[3] : Command CRC Check Enable
332 * 11 = Length 48 Check busy after response
334 /* Delay added before checking the status of frq change
335 * retry not supported by mmc.c(core file)
337 if (cmd->cmdidx == SD_CMD_APP_SEND_SCR)
338 udelay(50000); /* wait 50 ms */
340 if (!(cmd->resp_type & MMC_RSP_PRESENT))
342 else if (cmd->resp_type & MMC_RSP_136)
343 flags = RSP_TYPE_LGHT136 | CICE_NOCHECK;
344 else if (cmd->resp_type & MMC_RSP_BUSY)
345 flags = RSP_TYPE_LGHT48B;
347 flags = RSP_TYPE_LGHT48;
349 /* enable default flags */
350 flags = flags | (CMD_TYPE_NORMAL | CICE_NOCHECK | CCCE_NOCHECK |
351 MSBS_SGLEBLK | ACEN_DISABLE | BCE_DISABLE | DE_DISABLE);
353 if (cmd->resp_type & MMC_RSP_CRC)
355 if (cmd->resp_type & MMC_RSP_OPCODE)
359 if ((cmd->cmdidx == MMC_CMD_READ_MULTIPLE_BLOCK) ||
360 (cmd->cmdidx == MMC_CMD_WRITE_MULTIPLE_BLOCK)) {
361 flags |= (MSBS_MULTIBLK | BCE_ENABLE);
362 data->blocksize = 512;
363 writel(data->blocksize | (data->blocks << 16),
366 writel(data->blocksize | NBLK_STPCNT, &mmc_base->blk);
368 if (data->flags & MMC_DATA_READ)
369 flags |= (DP_DATA | DDIR_READ);
371 flags |= (DP_DATA | DDIR_WRITE);
374 writel(cmd->cmdarg, &mmc_base->arg);
375 writel((cmd->cmdidx << 24) | flags, &mmc_base->cmd);
377 start = get_timer(0);
379 mmc_stat = readl(&mmc_base->stat);
380 if (get_timer(start) > MAX_RETRY_MS) {
381 printf("%s : timeout: No status update\n", __func__);
386 if ((mmc_stat & IE_CTO) != 0) {
387 mmc_reset_controller_fsm(mmc_base, SYSCTL_SRC);
389 } else if ((mmc_stat & ERRI_MASK) != 0)
392 if (mmc_stat & CC_MASK) {
393 writel(CC_MASK, &mmc_base->stat);
394 if (cmd->resp_type & MMC_RSP_PRESENT) {
395 if (cmd->resp_type & MMC_RSP_136) {
396 /* response type 2 */
397 cmd->response[3] = readl(&mmc_base->rsp10);
398 cmd->response[2] = readl(&mmc_base->rsp32);
399 cmd->response[1] = readl(&mmc_base->rsp54);
400 cmd->response[0] = readl(&mmc_base->rsp76);
402 /* response types 1, 1b, 3, 4, 5, 6 */
403 cmd->response[0] = readl(&mmc_base->rsp10);
407 if (data && (data->flags & MMC_DATA_READ)) {
408 mmc_read_data(mmc_base, data->dest,
409 data->blocksize * data->blocks);
410 } else if (data && (data->flags & MMC_DATA_WRITE)) {
411 mmc_write_data(mmc_base, data->src,
412 data->blocksize * data->blocks);
417 static int mmc_read_data(struct hsmmc *mmc_base, char *buf, unsigned int size)
419 unsigned int *output_buf = (unsigned int *)buf;
420 unsigned int mmc_stat;
426 count = (size > MMCSD_SECTOR_SIZE) ? MMCSD_SECTOR_SIZE : size;
430 ulong start = get_timer(0);
432 mmc_stat = readl(&mmc_base->stat);
433 if (get_timer(start) > MAX_RETRY_MS) {
434 printf("%s: timeout waiting for status!\n",
438 } while (mmc_stat == 0);
440 if ((mmc_stat & (IE_DTO | IE_DCRC | IE_DEB)) != 0)
441 mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD);
443 if ((mmc_stat & ERRI_MASK) != 0)
446 if (mmc_stat & BRR_MASK) {
449 writel(readl(&mmc_base->stat) | BRR_MASK,
451 for (k = 0; k < count; k++) {
452 *output_buf = readl(&mmc_base->data);
458 if (mmc_stat & BWR_MASK)
459 writel(readl(&mmc_base->stat) | BWR_MASK,
462 if (mmc_stat & TC_MASK) {
463 writel(readl(&mmc_base->stat) | TC_MASK,
471 static int mmc_write_data(struct hsmmc *mmc_base, const char *buf,
474 unsigned int *input_buf = (unsigned int *)buf;
475 unsigned int mmc_stat;
481 count = (size > MMCSD_SECTOR_SIZE) ? MMCSD_SECTOR_SIZE : size;
485 ulong start = get_timer(0);
487 mmc_stat = readl(&mmc_base->stat);
488 if (get_timer(start) > MAX_RETRY_MS) {
489 printf("%s: timeout waiting for status!\n",
493 } while (mmc_stat == 0);
495 if ((mmc_stat & (IE_DTO | IE_DCRC | IE_DEB)) != 0)
496 mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD);
498 if ((mmc_stat & ERRI_MASK) != 0)
501 if (mmc_stat & BWR_MASK) {
504 writel(readl(&mmc_base->stat) | BWR_MASK,
506 for (k = 0; k < count; k++) {
507 writel(*input_buf, &mmc_base->data);
513 if (mmc_stat & BRR_MASK)
514 writel(readl(&mmc_base->stat) | BRR_MASK,
517 if (mmc_stat & TC_MASK) {
518 writel(readl(&mmc_base->stat) | TC_MASK,
526 static void mmc_set_ios(struct mmc *mmc)
528 struct omap_hsmmc_data *priv_data = mmc->priv;
529 struct hsmmc *mmc_base = priv_data->base_addr;
530 unsigned int dsor = 0;
533 /* configue bus width */
534 switch (mmc->bus_width) {
536 writel(readl(&mmc_base->con) | DTW_8_BITMODE,
541 writel(readl(&mmc_base->con) & ~DTW_8_BITMODE,
543 writel(readl(&mmc_base->hctl) | DTW_4_BITMODE,
549 writel(readl(&mmc_base->con) & ~DTW_8_BITMODE,
551 writel(readl(&mmc_base->hctl) & ~DTW_4_BITMODE,
556 /* configure clock with 96Mhz system clock.
558 if (mmc->clock != 0) {
559 dsor = (MMC_CLOCK_REFERENCE * 1000000 / mmc->clock);
560 if ((MMC_CLOCK_REFERENCE * 1000000) / dsor > mmc->clock)
564 mmc_reg_out(&mmc_base->sysctl, (ICE_MASK | DTO_MASK | CEN_MASK),
565 (ICE_STOP | DTO_15THDTO | CEN_DISABLE));
567 mmc_reg_out(&mmc_base->sysctl, ICE_MASK | CLKD_MASK,
568 (dsor << CLKD_OFFSET) | ICE_OSCILLATE);
570 start = get_timer(0);
571 while ((readl(&mmc_base->sysctl) & ICS_MASK) == ICS_NOTREADY) {
572 if (get_timer(start) > MAX_RETRY_MS) {
573 printf("%s: timeout waiting for ics!\n", __func__);
577 writel(readl(&mmc_base->sysctl) | CEN_ENABLE, &mmc_base->sysctl);
580 int omap_mmc_init(int dev_index, uint host_caps_mask, uint f_max, int cd_gpio,
584 struct omap_hsmmc_data *priv_data;
585 unsigned long base_addr;
589 base_addr = OMAP_HSMMC1_BASE;
591 #ifdef OMAP_HSMMC2_BASE
593 base_addr = OMAP_HSMMC2_BASE;
596 #ifdef OMAP_HSMMC3_BASE
598 base_addr = OMAP_HSMMC3_BASE;
602 printf("Invalid MMC device index: %d\n", dev_index);
606 mmc = &hsmmc_dev[dev_index];
607 priv_data = &hsmmc_dev_data[dev_index];
608 priv_data->base_addr = (void *)base_addr;
610 sprintf(mmc->name, "OMAP SD/MMC");
611 mmc->send_cmd = mmc_send_cmd;
612 mmc->set_ios = mmc_set_ios;
613 mmc->init = mmc_init_setup;
614 mmc->priv = priv_data;
616 priv_data->cd_gpio = omap_mmc_setup_gpio_in(cd_gpio, "mmc_cd");
617 if (priv_data->cd_gpio != -1)
618 mmc->getcd = omap_mmc_getcd;
620 priv_data->wp_gpio = omap_mmc_setup_gpio_in(wp_gpio, "mmc_wp");
621 if (priv_data->wp_gpio != -1)
622 mmc->getwp = omap_mmc_getwp;
624 mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
625 mmc->host_caps = (MMC_MODE_4BIT | MMC_MODE_HS_52MHz | MMC_MODE_HS |
626 MMC_MODE_HC) & ~host_caps_mask;
633 if (mmc->host_caps & MMC_MODE_HS) {
634 if (mmc->host_caps & MMC_MODE_HS_52MHz)
635 mmc->f_max = 52000000;
637 mmc->f_max = 26000000;
639 mmc->f_max = 20000000;
644 #if defined(CONFIG_OMAP34XX)
646 * Silicon revs 2.1 and older do not support multiblock transfers.
648 if ((get_cpu_family() == CPU_OMAP34XX) && (get_cpu_rev() <= CPU_3XX_ES21))