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Sukumar Ghoraide941242010-09-18 20:32:33 -07001/*
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>
Pantelis Antoniou93bfd612014-03-11 19:34:20 +020027#include <malloc.h>
Sukumar Ghoraide941242010-09-18 20:32:33 -070028#include <mmc.h>
29#include <part.h>
30#include <i2c.h>
31#include <twl4030.h>
Balaji T K14fa2dd2011-09-08 06:34:57 +000032#include <twl6030.h>
Nishanth Menoncb199102013-03-26 05:20:54 +000033#include <palmas.h>
Nikita Kiryanove874d5b2012-12-03 02:19:44 +000034#include <asm/gpio.h>
Sukumar Ghoraide941242010-09-18 20:32:33 -070035#include <asm/io.h>
36#include <asm/arch/mmc_host_def.h>
Dirk Behme96e0e7b2011-05-15 09:04:47 +000037#include <asm/arch/sys_proto.h>
Sukumar Ghoraide941242010-09-18 20:32:33 -070038
Pantelis Antoniouab769f22014-02-26 19:28:45 +020039/* simplify defines to OMAP_HSMMC_USE_GPIO */
40#if (defined(CONFIG_OMAP_GPIO) && !defined(CONFIG_SPL_BUILD)) || \
41 (defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_GPIO_SUPPORT))
42#define OMAP_HSMMC_USE_GPIO
43#else
44#undef OMAP_HSMMC_USE_GPIO
45#endif
46
Grazvydas Ignotas25c719e2012-03-19 12:12:06 +000047/* common definitions for all OMAPs */
48#define SYSCTL_SRC (1 << 25)
49#define SYSCTL_SRD (1 << 26)
50
Nikita Kiryanovcc22b0c2012-12-03 02:19:43 +000051struct omap_hsmmc_data {
52 struct hsmmc *base_addr;
Pantelis Antoniou93bfd612014-03-11 19:34:20 +020053 struct mmc_config cfg;
Pantelis Antoniouab769f22014-02-26 19:28:45 +020054#ifdef OMAP_HSMMC_USE_GPIO
Nikita Kiryanove874d5b2012-12-03 02:19:44 +000055 int cd_gpio;
Nikita Kiryanove3913f52012-12-03 02:19:47 +000056 int wp_gpio;
Pantelis Antoniouab769f22014-02-26 19:28:45 +020057#endif
Nikita Kiryanovcc22b0c2012-12-03 02:19:43 +000058};
59
Nishanth Menoneb9a28f2010-11-19 11:18:12 -050060/* If we fail after 1 second wait, something is really bad */
61#define MAX_RETRY_MS 1000
62
Sricharan933efe62011-11-15 09:49:53 -050063static int mmc_read_data(struct hsmmc *mmc_base, char *buf, unsigned int size);
64static int mmc_write_data(struct hsmmc *mmc_base, const char *buf,
65 unsigned int siz);
Balaji T K14fa2dd2011-09-08 06:34:57 +000066
Pantelis Antoniouab769f22014-02-26 19:28:45 +020067#ifdef OMAP_HSMMC_USE_GPIO
Nikita Kiryanove874d5b2012-12-03 02:19:44 +000068static int omap_mmc_setup_gpio_in(int gpio, const char *label)
69{
Simon Glass5915a2a2014-10-22 21:37:09 -060070 int ret;
71
72#ifndef CONFIG_DM_GPIO
Nikita Kiryanove874d5b2012-12-03 02:19:44 +000073 if (!gpio_is_valid(gpio))
74 return -1;
Simon Glass5915a2a2014-10-22 21:37:09 -060075#endif
76 ret = gpio_request(gpio, label);
77 if (ret)
78 return ret;
Nikita Kiryanove874d5b2012-12-03 02:19:44 +000079
Simon Glass5915a2a2014-10-22 21:37:09 -060080 ret = gpio_direction_input(gpio);
81 if (ret)
82 return ret;
Nikita Kiryanove874d5b2012-12-03 02:19:44 +000083
84 return gpio;
85}
Nikita Kiryanove874d5b2012-12-03 02:19:44 +000086#endif
87
Balaji T K14fa2dd2011-09-08 06:34:57 +000088#if defined(CONFIG_OMAP44XX) && defined(CONFIG_TWL6030_POWER)
89static void omap4_vmmc_pbias_config(struct mmc *mmc)
90{
91 u32 value = 0;
Balaji T K14fa2dd2011-09-08 06:34:57 +000092
Lokesh Vutlac43c8332013-02-04 04:22:04 +000093 value = readl((*ctrl)->control_pbiaslite);
Balaji T K14fa2dd2011-09-08 06:34:57 +000094 value &= ~(MMC1_PBIASLITE_PWRDNZ | MMC1_PWRDNZ);
Lokesh Vutlac43c8332013-02-04 04:22:04 +000095 writel(value, (*ctrl)->control_pbiaslite);
Balaji T K14fa2dd2011-09-08 06:34:57 +000096 /* set VMMC to 3V */
97 twl6030_power_mmc_init();
Lokesh Vutlac43c8332013-02-04 04:22:04 +000098 value = readl((*ctrl)->control_pbiaslite);
Balaji T K14fa2dd2011-09-08 06:34:57 +000099 value |= MMC1_PBIASLITE_VMODE | MMC1_PBIASLITE_PWRDNZ | MMC1_PWRDNZ;
Lokesh Vutlac43c8332013-02-04 04:22:04 +0000100 writel(value, (*ctrl)->control_pbiaslite);
Balaji T K14fa2dd2011-09-08 06:34:57 +0000101}
102#endif
103
Nishanth Menoncb199102013-03-26 05:20:54 +0000104#if defined(CONFIG_OMAP54XX) && defined(CONFIG_PALMAS_POWER)
Balaji T Kdd23e592012-03-12 02:25:49 +0000105static void omap5_pbias_config(struct mmc *mmc)
106{
107 u32 value = 0;
Balaji T Kdd23e592012-03-12 02:25:49 +0000108
Lokesh Vutlac43c8332013-02-04 04:22:04 +0000109 value = readl((*ctrl)->control_pbias);
Balaji T Ka5d439c2013-06-06 05:04:32 +0000110 value &= ~SDCARD_PWRDNZ;
111 writel(value, (*ctrl)->control_pbias);
112 udelay(10); /* wait 10 us */
113 value &= ~SDCARD_BIAS_PWRDNZ;
Lokesh Vutlac43c8332013-02-04 04:22:04 +0000114 writel(value, (*ctrl)->control_pbias);
Balaji T Kdd23e592012-03-12 02:25:49 +0000115
Nishanth Menon384bcae2013-03-26 05:20:56 +0000116 palmas_mmc1_poweron_ldo();
Balaji T Kdd23e592012-03-12 02:25:49 +0000117
Lokesh Vutlac43c8332013-02-04 04:22:04 +0000118 value = readl((*ctrl)->control_pbias);
Balaji T Ka5d439c2013-06-06 05:04:32 +0000119 value |= SDCARD_BIAS_PWRDNZ;
Lokesh Vutlac43c8332013-02-04 04:22:04 +0000120 writel(value, (*ctrl)->control_pbias);
Balaji T Ka5d439c2013-06-06 05:04:32 +0000121 udelay(150); /* wait 150 us */
122 value |= SDCARD_PWRDNZ;
123 writel(value, (*ctrl)->control_pbias);
124 udelay(150); /* wait 150 us */
Balaji T Kdd23e592012-03-12 02:25:49 +0000125}
126#endif
127
Jeroen Hofstee750121c2014-07-12 21:24:08 +0200128static unsigned char mmc_board_init(struct mmc *mmc)
Sukumar Ghoraide941242010-09-18 20:32:33 -0700129{
Sukumar Ghoraide941242010-09-18 20:32:33 -0700130#if defined(CONFIG_OMAP34XX)
131 t2_t *t2_base = (t2_t *)T2_BASE;
132 struct prcm *prcm_base = (struct prcm *)PRCM_BASE;
Grazvydas Ignotasb1e725f2012-03-19 03:50:53 +0000133 u32 pbias_lite;
Sukumar Ghoraide941242010-09-18 20:32:33 -0700134
Grazvydas Ignotasb1e725f2012-03-19 03:50:53 +0000135 pbias_lite = readl(&t2_base->pbias_lite);
136 pbias_lite &= ~(PBIASLITEPWRDNZ1 | PBIASLITEPWRDNZ0);
Albert ARIBAUD \(3ADEV\)5bfdd1f2015-01-16 09:09:50 +0100137#ifdef CONFIG_TARGET_OMAP3_CAIRO
138 /* for cairo board, we need to set up 1.8 Volt bias level on MMC1 */
139 pbias_lite &= ~PBIASLITEVMODE0;
140#endif
Grazvydas Ignotasb1e725f2012-03-19 03:50:53 +0000141 writel(pbias_lite, &t2_base->pbias_lite);
Paul Kocialkowskiaac54502014-11-08 20:55:47 +0100142
Grazvydas Ignotasb1e725f2012-03-19 03:50:53 +0000143 writel(pbias_lite | PBIASLITEPWRDNZ1 |
Sukumar Ghoraide941242010-09-18 20:32:33 -0700144 PBIASSPEEDCTRL0 | PBIASLITEPWRDNZ0,
145 &t2_base->pbias_lite);
146
147 writel(readl(&t2_base->devconf0) | MMCSDIO1ADPCLKISEL,
148 &t2_base->devconf0);
149
150 writel(readl(&t2_base->devconf1) | MMCSDIO2ADPCLKISEL,
151 &t2_base->devconf1);
152
Jonathan Solnitbbbc1ae2012-02-24 11:30:18 +0000153 /* Change from default of 52MHz to 26MHz if necessary */
Pantelis Antoniou93bfd612014-03-11 19:34:20 +0200154 if (!(mmc->cfg->host_caps & MMC_MODE_HS_52MHz))
Jonathan Solnitbbbc1ae2012-02-24 11:30:18 +0000155 writel(readl(&t2_base->ctl_prog_io1) & ~CTLPROGIO1SPEEDCTRL,
156 &t2_base->ctl_prog_io1);
157
Sukumar Ghoraide941242010-09-18 20:32:33 -0700158 writel(readl(&prcm_base->fclken1_core) |
159 EN_MMC1 | EN_MMC2 | EN_MMC3,
160 &prcm_base->fclken1_core);
161
162 writel(readl(&prcm_base->iclken1_core) |
163 EN_MMC1 | EN_MMC2 | EN_MMC3,
164 &prcm_base->iclken1_core);
165#endif
166
Balaji T K14fa2dd2011-09-08 06:34:57 +0000167#if defined(CONFIG_OMAP44XX) && defined(CONFIG_TWL6030_POWER)
168 /* PBIAS config needed for MMC1 only */
169 if (mmc->block_dev.dev == 0)
170 omap4_vmmc_pbias_config(mmc);
171#endif
Nishanth Menoncb199102013-03-26 05:20:54 +0000172#if defined(CONFIG_OMAP54XX) && defined(CONFIG_PALMAS_POWER)
Balaji T Kdd23e592012-03-12 02:25:49 +0000173 if (mmc->block_dev.dev == 0)
174 omap5_pbias_config(mmc);
175#endif
Sukumar Ghoraide941242010-09-18 20:32:33 -0700176
177 return 0;
178}
179
Sricharan933efe62011-11-15 09:49:53 -0500180void mmc_init_stream(struct hsmmc *mmc_base)
Sukumar Ghoraide941242010-09-18 20:32:33 -0700181{
Nishanth Menoneb9a28f2010-11-19 11:18:12 -0500182 ulong start;
Sukumar Ghoraide941242010-09-18 20:32:33 -0700183
184 writel(readl(&mmc_base->con) | INIT_INITSTREAM, &mmc_base->con);
185
186 writel(MMC_CMD0, &mmc_base->cmd);
Nishanth Menoneb9a28f2010-11-19 11:18:12 -0500187 start = get_timer(0);
188 while (!(readl(&mmc_base->stat) & CC_MASK)) {
189 if (get_timer(0) - start > MAX_RETRY_MS) {
190 printf("%s: timedout waiting for cc!\n", __func__);
191 return;
192 }
193 }
Sukumar Ghoraide941242010-09-18 20:32:33 -0700194 writel(CC_MASK, &mmc_base->stat)
195 ;
196 writel(MMC_CMD0, &mmc_base->cmd)
197 ;
Nishanth Menoneb9a28f2010-11-19 11:18:12 -0500198 start = get_timer(0);
199 while (!(readl(&mmc_base->stat) & CC_MASK)) {
200 if (get_timer(0) - start > MAX_RETRY_MS) {
201 printf("%s: timedout waiting for cc2!\n", __func__);
202 return;
203 }
204 }
Sukumar Ghoraide941242010-09-18 20:32:33 -0700205 writel(readl(&mmc_base->con) & ~INIT_INITSTREAM, &mmc_base->con);
206}
207
208
Pantelis Antoniouab769f22014-02-26 19:28:45 +0200209static int omap_hsmmc_init_setup(struct mmc *mmc)
Sukumar Ghoraide941242010-09-18 20:32:33 -0700210{
Nikita Kiryanovcc22b0c2012-12-03 02:19:43 +0000211 struct hsmmc *mmc_base;
Sukumar Ghoraide941242010-09-18 20:32:33 -0700212 unsigned int reg_val;
213 unsigned int dsor;
Nishanth Menoneb9a28f2010-11-19 11:18:12 -0500214 ulong start;
Sukumar Ghoraide941242010-09-18 20:32:33 -0700215
Nikita Kiryanovcc22b0c2012-12-03 02:19:43 +0000216 mmc_base = ((struct omap_hsmmc_data *)mmc->priv)->base_addr;
Balaji T K14fa2dd2011-09-08 06:34:57 +0000217 mmc_board_init(mmc);
Sukumar Ghoraide941242010-09-18 20:32:33 -0700218
219 writel(readl(&mmc_base->sysconfig) | MMC_SOFTRESET,
220 &mmc_base->sysconfig);
Nishanth Menoneb9a28f2010-11-19 11:18:12 -0500221 start = get_timer(0);
222 while ((readl(&mmc_base->sysstatus) & RESETDONE) == 0) {
223 if (get_timer(0) - start > MAX_RETRY_MS) {
224 printf("%s: timedout waiting for cc2!\n", __func__);
225 return TIMEOUT;
226 }
227 }
Sukumar Ghoraide941242010-09-18 20:32:33 -0700228 writel(readl(&mmc_base->sysctl) | SOFTRESETALL, &mmc_base->sysctl);
Nishanth Menoneb9a28f2010-11-19 11:18:12 -0500229 start = get_timer(0);
230 while ((readl(&mmc_base->sysctl) & SOFTRESETALL) != 0x0) {
231 if (get_timer(0) - start > MAX_RETRY_MS) {
232 printf("%s: timedout waiting for softresetall!\n",
233 __func__);
234 return TIMEOUT;
235 }
236 }
Sukumar Ghoraide941242010-09-18 20:32:33 -0700237 writel(DTW_1_BITMODE | SDBP_PWROFF | SDVS_3V0, &mmc_base->hctl);
238 writel(readl(&mmc_base->capa) | VS30_3V0SUP | VS18_1V8SUP,
239 &mmc_base->capa);
240
241 reg_val = readl(&mmc_base->con) & RESERVED_MASK;
242
243 writel(CTPL_MMC_SD | reg_val | WPP_ACTIVEHIGH | CDP_ACTIVEHIGH |
244 MIT_CTO | DW8_1_4BITMODE | MODE_FUNC | STR_BLOCK |
245 HR_NOHOSTRESP | INIT_NOINIT | NOOPENDRAIN, &mmc_base->con);
246
247 dsor = 240;
248 mmc_reg_out(&mmc_base->sysctl, (ICE_MASK | DTO_MASK | CEN_MASK),
249 (ICE_STOP | DTO_15THDTO | CEN_DISABLE));
250 mmc_reg_out(&mmc_base->sysctl, ICE_MASK | CLKD_MASK,
251 (dsor << CLKD_OFFSET) | ICE_OSCILLATE);
Nishanth Menoneb9a28f2010-11-19 11:18:12 -0500252 start = get_timer(0);
253 while ((readl(&mmc_base->sysctl) & ICS_MASK) == ICS_NOTREADY) {
254 if (get_timer(0) - start > MAX_RETRY_MS) {
255 printf("%s: timedout waiting for ics!\n", __func__);
256 return TIMEOUT;
257 }
258 }
Sukumar Ghoraide941242010-09-18 20:32:33 -0700259 writel(readl(&mmc_base->sysctl) | CEN_ENABLE, &mmc_base->sysctl);
260
261 writel(readl(&mmc_base->hctl) | SDBP_PWRON, &mmc_base->hctl);
262
263 writel(IE_BADA | IE_CERR | IE_DEB | IE_DCRC | IE_DTO | IE_CIE |
264 IE_CEB | IE_CCRC | IE_CTO | IE_BRR | IE_BWR | IE_TC | IE_CC,
265 &mmc_base->ie);
266
267 mmc_init_stream(mmc_base);
268
269 return 0;
270}
271
Grazvydas Ignotas25c719e2012-03-19 12:12:06 +0000272/*
273 * MMC controller internal finite state machine reset
274 *
275 * Used to reset command or data internal state machines, using respectively
276 * SRC or SRD bit of SYSCTL register
277 */
278static void mmc_reset_controller_fsm(struct hsmmc *mmc_base, u32 bit)
279{
280 ulong start;
281
282 mmc_reg_out(&mmc_base->sysctl, bit, bit);
283
Oleksandr Tyshchenko61a6cc22013-08-06 13:44:16 +0300284 /*
285 * CMD(DAT) lines reset procedures are slightly different
286 * for OMAP3 and OMAP4(AM335x,OMAP5,DRA7xx).
287 * According to OMAP3 TRM:
288 * Set SRC(SRD) bit in MMCHS_SYSCTL register to 0x1 and wait until it
289 * returns to 0x0.
290 * According to OMAP4(AM335x,OMAP5,DRA7xx) TRMs, CMD(DATA) lines reset
291 * procedure steps must be as follows:
292 * 1. Initiate CMD(DAT) line reset by writing 0x1 to SRC(SRD) bit in
293 * MMCHS_SYSCTL register (SD_SYSCTL for AM335x).
294 * 2. Poll the SRC(SRD) bit until it is set to 0x1.
295 * 3. Wait until the SRC (SRD) bit returns to 0x0
296 * (reset procedure is completed).
297 */
298#if defined(CONFIG_OMAP44XX) || defined(CONFIG_OMAP54XX) || \
Nikita Kiryanovdce55b92015-07-30 23:56:20 +0300299 defined(CONFIG_AM33XX) || defined(CONFIG_AM43XX)
Oleksandr Tyshchenko61a6cc22013-08-06 13:44:16 +0300300 if (!(readl(&mmc_base->sysctl) & bit)) {
301 start = get_timer(0);
302 while (!(readl(&mmc_base->sysctl) & bit)) {
303 if (get_timer(0) - start > MAX_RETRY_MS)
304 return;
305 }
306 }
307#endif
Grazvydas Ignotas25c719e2012-03-19 12:12:06 +0000308 start = get_timer(0);
309 while ((readl(&mmc_base->sysctl) & bit) != 0) {
310 if (get_timer(0) - start > MAX_RETRY_MS) {
311 printf("%s: timedout waiting for sysctl %x to clear\n",
312 __func__, bit);
313 return;
314 }
315 }
316}
Sukumar Ghoraide941242010-09-18 20:32:33 -0700317
Pantelis Antoniouab769f22014-02-26 19:28:45 +0200318static int omap_hsmmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
Sukumar Ghoraide941242010-09-18 20:32:33 -0700319 struct mmc_data *data)
320{
Nikita Kiryanovcc22b0c2012-12-03 02:19:43 +0000321 struct hsmmc *mmc_base;
Sukumar Ghoraide941242010-09-18 20:32:33 -0700322 unsigned int flags, mmc_stat;
Nishanth Menoneb9a28f2010-11-19 11:18:12 -0500323 ulong start;
Sukumar Ghoraide941242010-09-18 20:32:33 -0700324
Nikita Kiryanovcc22b0c2012-12-03 02:19:43 +0000325 mmc_base = ((struct omap_hsmmc_data *)mmc->priv)->base_addr;
Nishanth Menoneb9a28f2010-11-19 11:18:12 -0500326 start = get_timer(0);
Tom Rinia7778f82012-01-30 11:22:25 +0000327 while ((readl(&mmc_base->pstate) & (DATI_MASK | CMDI_MASK)) != 0) {
Nishanth Menoneb9a28f2010-11-19 11:18:12 -0500328 if (get_timer(0) - start > MAX_RETRY_MS) {
Tom Rinia7778f82012-01-30 11:22:25 +0000329 printf("%s: timedout waiting on cmd inhibit to clear\n",
330 __func__);
Nishanth Menoneb9a28f2010-11-19 11:18:12 -0500331 return TIMEOUT;
332 }
333 }
Sukumar Ghoraide941242010-09-18 20:32:33 -0700334 writel(0xFFFFFFFF, &mmc_base->stat);
Nishanth Menoneb9a28f2010-11-19 11:18:12 -0500335 start = get_timer(0);
336 while (readl(&mmc_base->stat)) {
337 if (get_timer(0) - start > MAX_RETRY_MS) {
Grazvydas Ignotas15ceb1d2012-03-19 12:11:43 +0000338 printf("%s: timedout waiting for STAT (%x) to clear\n",
339 __func__, readl(&mmc_base->stat));
Nishanth Menoneb9a28f2010-11-19 11:18:12 -0500340 return TIMEOUT;
341 }
342 }
Sukumar Ghoraide941242010-09-18 20:32:33 -0700343 /*
344 * CMDREG
345 * CMDIDX[13:8] : Command index
346 * DATAPRNT[5] : Data Present Select
347 * ENCMDIDX[4] : Command Index Check Enable
348 * ENCMDCRC[3] : Command CRC Check Enable
349 * RSPTYP[1:0]
350 * 00 = No Response
351 * 01 = Length 136
352 * 10 = Length 48
353 * 11 = Length 48 Check busy after response
354 */
355 /* Delay added before checking the status of frq change
356 * retry not supported by mmc.c(core file)
357 */
358 if (cmd->cmdidx == SD_CMD_APP_SEND_SCR)
359 udelay(50000); /* wait 50 ms */
360
361 if (!(cmd->resp_type & MMC_RSP_PRESENT))
362 flags = 0;
363 else if (cmd->resp_type & MMC_RSP_136)
364 flags = RSP_TYPE_LGHT136 | CICE_NOCHECK;
365 else if (cmd->resp_type & MMC_RSP_BUSY)
366 flags = RSP_TYPE_LGHT48B;
367 else
368 flags = RSP_TYPE_LGHT48;
369
370 /* enable default flags */
371 flags = flags | (CMD_TYPE_NORMAL | CICE_NOCHECK | CCCE_NOCHECK |
372 MSBS_SGLEBLK | ACEN_DISABLE | BCE_DISABLE | DE_DISABLE);
373
374 if (cmd->resp_type & MMC_RSP_CRC)
375 flags |= CCCE_CHECK;
376 if (cmd->resp_type & MMC_RSP_OPCODE)
377 flags |= CICE_CHECK;
378
379 if (data) {
380 if ((cmd->cmdidx == MMC_CMD_READ_MULTIPLE_BLOCK) ||
381 (cmd->cmdidx == MMC_CMD_WRITE_MULTIPLE_BLOCK)) {
382 flags |= (MSBS_MULTIBLK | BCE_ENABLE);
383 data->blocksize = 512;
384 writel(data->blocksize | (data->blocks << 16),
385 &mmc_base->blk);
386 } else
387 writel(data->blocksize | NBLK_STPCNT, &mmc_base->blk);
388
389 if (data->flags & MMC_DATA_READ)
390 flags |= (DP_DATA | DDIR_READ);
391 else
392 flags |= (DP_DATA | DDIR_WRITE);
393 }
394
395 writel(cmd->cmdarg, &mmc_base->arg);
Lubomir Popov152ba362013-08-14 18:59:18 +0300396 udelay(20); /* To fix "No status update" error on eMMC */
Sukumar Ghoraide941242010-09-18 20:32:33 -0700397 writel((cmd->cmdidx << 24) | flags, &mmc_base->cmd);
398
Nishanth Menoneb9a28f2010-11-19 11:18:12 -0500399 start = get_timer(0);
Sukumar Ghoraide941242010-09-18 20:32:33 -0700400 do {
401 mmc_stat = readl(&mmc_base->stat);
Nishanth Menoneb9a28f2010-11-19 11:18:12 -0500402 if (get_timer(0) - start > MAX_RETRY_MS) {
403 printf("%s : timeout: No status update\n", __func__);
404 return TIMEOUT;
405 }
406 } while (!mmc_stat);
Sukumar Ghoraide941242010-09-18 20:32:33 -0700407
Grazvydas Ignotas25c719e2012-03-19 12:12:06 +0000408 if ((mmc_stat & IE_CTO) != 0) {
409 mmc_reset_controller_fsm(mmc_base, SYSCTL_SRC);
Sukumar Ghoraide941242010-09-18 20:32:33 -0700410 return TIMEOUT;
Grazvydas Ignotas25c719e2012-03-19 12:12:06 +0000411 } else if ((mmc_stat & ERRI_MASK) != 0)
Sukumar Ghoraide941242010-09-18 20:32:33 -0700412 return -1;
413
414 if (mmc_stat & CC_MASK) {
415 writel(CC_MASK, &mmc_base->stat);
416 if (cmd->resp_type & MMC_RSP_PRESENT) {
417 if (cmd->resp_type & MMC_RSP_136) {
418 /* response type 2 */
419 cmd->response[3] = readl(&mmc_base->rsp10);
420 cmd->response[2] = readl(&mmc_base->rsp32);
421 cmd->response[1] = readl(&mmc_base->rsp54);
422 cmd->response[0] = readl(&mmc_base->rsp76);
423 } else
424 /* response types 1, 1b, 3, 4, 5, 6 */
425 cmd->response[0] = readl(&mmc_base->rsp10);
426 }
427 }
428
429 if (data && (data->flags & MMC_DATA_READ)) {
430 mmc_read_data(mmc_base, data->dest,
431 data->blocksize * data->blocks);
432 } else if (data && (data->flags & MMC_DATA_WRITE)) {
433 mmc_write_data(mmc_base, data->src,
434 data->blocksize * data->blocks);
435 }
436 return 0;
437}
438
Sricharan933efe62011-11-15 09:49:53 -0500439static int mmc_read_data(struct hsmmc *mmc_base, char *buf, unsigned int size)
Sukumar Ghoraide941242010-09-18 20:32:33 -0700440{
441 unsigned int *output_buf = (unsigned int *)buf;
442 unsigned int mmc_stat;
443 unsigned int count;
444
445 /*
446 * Start Polled Read
447 */
448 count = (size > MMCSD_SECTOR_SIZE) ? MMCSD_SECTOR_SIZE : size;
449 count /= 4;
450
451 while (size) {
Nishanth Menoneb9a28f2010-11-19 11:18:12 -0500452 ulong start = get_timer(0);
Sukumar Ghoraide941242010-09-18 20:32:33 -0700453 do {
454 mmc_stat = readl(&mmc_base->stat);
Nishanth Menoneb9a28f2010-11-19 11:18:12 -0500455 if (get_timer(0) - start > MAX_RETRY_MS) {
456 printf("%s: timedout waiting for status!\n",
457 __func__);
458 return TIMEOUT;
459 }
Sukumar Ghoraide941242010-09-18 20:32:33 -0700460 } while (mmc_stat == 0);
461
Grazvydas Ignotas25c719e2012-03-19 12:12:06 +0000462 if ((mmc_stat & (IE_DTO | IE_DCRC | IE_DEB)) != 0)
463 mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD);
464
Sukumar Ghoraide941242010-09-18 20:32:33 -0700465 if ((mmc_stat & ERRI_MASK) != 0)
466 return 1;
467
468 if (mmc_stat & BRR_MASK) {
469 unsigned int k;
470
471 writel(readl(&mmc_base->stat) | BRR_MASK,
472 &mmc_base->stat);
473 for (k = 0; k < count; k++) {
474 *output_buf = readl(&mmc_base->data);
475 output_buf++;
476 }
477 size -= (count*4);
478 }
479
480 if (mmc_stat & BWR_MASK)
481 writel(readl(&mmc_base->stat) | BWR_MASK,
482 &mmc_base->stat);
483
484 if (mmc_stat & TC_MASK) {
485 writel(readl(&mmc_base->stat) | TC_MASK,
486 &mmc_base->stat);
487 break;
488 }
489 }
490 return 0;
491}
492
Sricharan933efe62011-11-15 09:49:53 -0500493static int mmc_write_data(struct hsmmc *mmc_base, const char *buf,
494 unsigned int size)
Sukumar Ghoraide941242010-09-18 20:32:33 -0700495{
496 unsigned int *input_buf = (unsigned int *)buf;
497 unsigned int mmc_stat;
498 unsigned int count;
499
500 /*
Lubomir Popov152ba362013-08-14 18:59:18 +0300501 * Start Polled Write
Sukumar Ghoraide941242010-09-18 20:32:33 -0700502 */
503 count = (size > MMCSD_SECTOR_SIZE) ? MMCSD_SECTOR_SIZE : size;
504 count /= 4;
505
506 while (size) {
Nishanth Menoneb9a28f2010-11-19 11:18:12 -0500507 ulong start = get_timer(0);
Sukumar Ghoraide941242010-09-18 20:32:33 -0700508 do {
509 mmc_stat = readl(&mmc_base->stat);
Nishanth Menoneb9a28f2010-11-19 11:18:12 -0500510 if (get_timer(0) - start > MAX_RETRY_MS) {
511 printf("%s: timedout waiting for status!\n",
512 __func__);
513 return TIMEOUT;
514 }
Sukumar Ghoraide941242010-09-18 20:32:33 -0700515 } while (mmc_stat == 0);
516
Grazvydas Ignotas25c719e2012-03-19 12:12:06 +0000517 if ((mmc_stat & (IE_DTO | IE_DCRC | IE_DEB)) != 0)
518 mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD);
519
Sukumar Ghoraide941242010-09-18 20:32:33 -0700520 if ((mmc_stat & ERRI_MASK) != 0)
521 return 1;
522
523 if (mmc_stat & BWR_MASK) {
524 unsigned int k;
525
526 writel(readl(&mmc_base->stat) | BWR_MASK,
527 &mmc_base->stat);
528 for (k = 0; k < count; k++) {
529 writel(*input_buf, &mmc_base->data);
530 input_buf++;
531 }
532 size -= (count*4);
533 }
534
535 if (mmc_stat & BRR_MASK)
536 writel(readl(&mmc_base->stat) | BRR_MASK,
537 &mmc_base->stat);
538
539 if (mmc_stat & TC_MASK) {
540 writel(readl(&mmc_base->stat) | TC_MASK,
541 &mmc_base->stat);
542 break;
543 }
544 }
545 return 0;
546}
547
Pantelis Antoniouab769f22014-02-26 19:28:45 +0200548static void omap_hsmmc_set_ios(struct mmc *mmc)
Sukumar Ghoraide941242010-09-18 20:32:33 -0700549{
Nikita Kiryanovcc22b0c2012-12-03 02:19:43 +0000550 struct hsmmc *mmc_base;
Sukumar Ghoraide941242010-09-18 20:32:33 -0700551 unsigned int dsor = 0;
Nishanth Menoneb9a28f2010-11-19 11:18:12 -0500552 ulong start;
Sukumar Ghoraide941242010-09-18 20:32:33 -0700553
Nikita Kiryanovcc22b0c2012-12-03 02:19:43 +0000554 mmc_base = ((struct omap_hsmmc_data *)mmc->priv)->base_addr;
Sukumar Ghoraide941242010-09-18 20:32:33 -0700555 /* configue bus width */
556 switch (mmc->bus_width) {
557 case 8:
558 writel(readl(&mmc_base->con) | DTW_8_BITMODE,
559 &mmc_base->con);
560 break;
561
562 case 4:
563 writel(readl(&mmc_base->con) & ~DTW_8_BITMODE,
564 &mmc_base->con);
565 writel(readl(&mmc_base->hctl) | DTW_4_BITMODE,
566 &mmc_base->hctl);
567 break;
568
569 case 1:
570 default:
571 writel(readl(&mmc_base->con) & ~DTW_8_BITMODE,
572 &mmc_base->con);
573 writel(readl(&mmc_base->hctl) & ~DTW_4_BITMODE,
574 &mmc_base->hctl);
575 break;
576 }
577
578 /* configure clock with 96Mhz system clock.
579 */
580 if (mmc->clock != 0) {
581 dsor = (MMC_CLOCK_REFERENCE * 1000000 / mmc->clock);
582 if ((MMC_CLOCK_REFERENCE * 1000000) / dsor > mmc->clock)
583 dsor++;
584 }
585
586 mmc_reg_out(&mmc_base->sysctl, (ICE_MASK | DTO_MASK | CEN_MASK),
587 (ICE_STOP | DTO_15THDTO | CEN_DISABLE));
588
589 mmc_reg_out(&mmc_base->sysctl, ICE_MASK | CLKD_MASK,
590 (dsor << CLKD_OFFSET) | ICE_OSCILLATE);
591
Nishanth Menoneb9a28f2010-11-19 11:18:12 -0500592 start = get_timer(0);
593 while ((readl(&mmc_base->sysctl) & ICS_MASK) == ICS_NOTREADY) {
594 if (get_timer(0) - start > MAX_RETRY_MS) {
595 printf("%s: timedout waiting for ics!\n", __func__);
596 return;
597 }
598 }
Sukumar Ghoraide941242010-09-18 20:32:33 -0700599 writel(readl(&mmc_base->sysctl) | CEN_ENABLE, &mmc_base->sysctl);
600}
601
Pantelis Antoniouab769f22014-02-26 19:28:45 +0200602#ifdef OMAP_HSMMC_USE_GPIO
603static int omap_hsmmc_getcd(struct mmc *mmc)
604{
605 struct omap_hsmmc_data *priv_data = mmc->priv;
606 int cd_gpio;
607
608 /* if no CD return as 1 */
609 cd_gpio = priv_data->cd_gpio;
610 if (cd_gpio < 0)
611 return 1;
612
Igor Grinberg0b03a932014-11-03 11:32:23 +0200613 /* NOTE: assumes card detect signal is active-low */
614 return !gpio_get_value(cd_gpio);
Pantelis Antoniouab769f22014-02-26 19:28:45 +0200615}
616
617static int omap_hsmmc_getwp(struct mmc *mmc)
618{
619 struct omap_hsmmc_data *priv_data = mmc->priv;
620 int wp_gpio;
621
622 /* if no WP return as 0 */
623 wp_gpio = priv_data->wp_gpio;
624 if (wp_gpio < 0)
625 return 0;
626
Igor Grinberg0b03a932014-11-03 11:32:23 +0200627 /* NOTE: assumes write protect signal is active-high */
Pantelis Antoniouab769f22014-02-26 19:28:45 +0200628 return gpio_get_value(wp_gpio);
629}
630#endif
631
632static const struct mmc_ops omap_hsmmc_ops = {
633 .send_cmd = omap_hsmmc_send_cmd,
634 .set_ios = omap_hsmmc_set_ios,
635 .init = omap_hsmmc_init_setup,
636#ifdef OMAP_HSMMC_USE_GPIO
637 .getcd = omap_hsmmc_getcd,
638 .getwp = omap_hsmmc_getwp,
639#endif
640};
641
Nikita Kiryanove3913f52012-12-03 02:19:47 +0000642int omap_mmc_init(int dev_index, uint host_caps_mask, uint f_max, int cd_gpio,
643 int wp_gpio)
Sukumar Ghoraide941242010-09-18 20:32:33 -0700644{
Pantelis Antoniou93bfd612014-03-11 19:34:20 +0200645 struct mmc *mmc;
646 struct omap_hsmmc_data *priv_data;
647 struct mmc_config *cfg;
648 uint host_caps_val;
Sukumar Ghoraide941242010-09-18 20:32:33 -0700649
Pantelis Antoniou93bfd612014-03-11 19:34:20 +0200650 priv_data = malloc(sizeof(*priv_data));
651 if (priv_data == NULL)
652 return -1;
653
Rob Herring5a203972015-03-23 17:56:59 -0500654 host_caps_val = MMC_MODE_4BIT | MMC_MODE_HS_52MHz | MMC_MODE_HS;
Sukumar Ghoraide941242010-09-18 20:32:33 -0700655
656 switch (dev_index) {
657 case 0:
Nikita Kiryanovcc22b0c2012-12-03 02:19:43 +0000658 priv_data->base_addr = (struct hsmmc *)OMAP_HSMMC1_BASE;
Sukumar Ghoraide941242010-09-18 20:32:33 -0700659 break;
Tom Rini1037d582011-10-12 06:20:50 +0000660#ifdef OMAP_HSMMC2_BASE
Sukumar Ghoraide941242010-09-18 20:32:33 -0700661 case 1:
Nikita Kiryanovcc22b0c2012-12-03 02:19:43 +0000662 priv_data->base_addr = (struct hsmmc *)OMAP_HSMMC2_BASE;
Lubomir Popov152ba362013-08-14 18:59:18 +0300663#if (defined(CONFIG_OMAP44XX) || defined(CONFIG_OMAP54XX) || \
Nikita Kiryanov9fbdca62015-07-30 23:56:21 +0300664 defined(CONFIG_DRA7XX) || defined(CONFIG_AM57XX) || \
665 defined(CONFIG_AM43XX)) && defined(CONFIG_HSMMC2_8BIT)
Lubomir Popov152ba362013-08-14 18:59:18 +0300666 /* Enable 8-bit interface for eMMC on OMAP4/5 or DRA7XX */
667 host_caps_val |= MMC_MODE_8BIT;
668#endif
Sukumar Ghoraide941242010-09-18 20:32:33 -0700669 break;
Tom Rini1037d582011-10-12 06:20:50 +0000670#endif
671#ifdef OMAP_HSMMC3_BASE
Sukumar Ghoraide941242010-09-18 20:32:33 -0700672 case 2:
Nikita Kiryanovcc22b0c2012-12-03 02:19:43 +0000673 priv_data->base_addr = (struct hsmmc *)OMAP_HSMMC3_BASE;
Felipe Balbid11ac4b2014-11-06 08:28:51 -0600674#if (defined(CONFIG_DRA7XX) || defined(CONFIG_AM57XX)) && defined(CONFIG_HSMMC3_8BIT)
Lubomir Popov152ba362013-08-14 18:59:18 +0300675 /* Enable 8-bit interface for eMMC on DRA7XX */
676 host_caps_val |= MMC_MODE_8BIT;
677#endif
Sukumar Ghoraide941242010-09-18 20:32:33 -0700678 break;
Tom Rini1037d582011-10-12 06:20:50 +0000679#endif
Sukumar Ghoraide941242010-09-18 20:32:33 -0700680 default:
Nikita Kiryanovcc22b0c2012-12-03 02:19:43 +0000681 priv_data->base_addr = (struct hsmmc *)OMAP_HSMMC1_BASE;
Sukumar Ghoraide941242010-09-18 20:32:33 -0700682 return 1;
683 }
Pantelis Antoniouab769f22014-02-26 19:28:45 +0200684#ifdef OMAP_HSMMC_USE_GPIO
685 /* on error gpio values are set to -1, which is what we want */
Nikita Kiryanove874d5b2012-12-03 02:19:44 +0000686 priv_data->cd_gpio = omap_mmc_setup_gpio_in(cd_gpio, "mmc_cd");
Nikita Kiryanove3913f52012-12-03 02:19:47 +0000687 priv_data->wp_gpio = omap_mmc_setup_gpio_in(wp_gpio, "mmc_wp");
Pantelis Antoniouab769f22014-02-26 19:28:45 +0200688#endif
Peter Korsgaard173ddc52013-03-21 04:00:04 +0000689
Pantelis Antoniou93bfd612014-03-11 19:34:20 +0200690 cfg = &priv_data->cfg;
Sukumar Ghoraide941242010-09-18 20:32:33 -0700691
Pantelis Antoniou93bfd612014-03-11 19:34:20 +0200692 cfg->name = "OMAP SD/MMC";
693 cfg->ops = &omap_hsmmc_ops;
694
695 cfg->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
696 cfg->host_caps = host_caps_val & ~host_caps_mask;
697
698 cfg->f_min = 400000;
Jonathan Solnitbbbc1ae2012-02-24 11:30:18 +0000699
700 if (f_max != 0)
Pantelis Antoniou93bfd612014-03-11 19:34:20 +0200701 cfg->f_max = f_max;
Jonathan Solnitbbbc1ae2012-02-24 11:30:18 +0000702 else {
Pantelis Antoniou93bfd612014-03-11 19:34:20 +0200703 if (cfg->host_caps & MMC_MODE_HS) {
704 if (cfg->host_caps & MMC_MODE_HS_52MHz)
705 cfg->f_max = 52000000;
Jonathan Solnitbbbc1ae2012-02-24 11:30:18 +0000706 else
Pantelis Antoniou93bfd612014-03-11 19:34:20 +0200707 cfg->f_max = 26000000;
Jonathan Solnitbbbc1ae2012-02-24 11:30:18 +0000708 } else
Pantelis Antoniou93bfd612014-03-11 19:34:20 +0200709 cfg->f_max = 20000000;
Jonathan Solnitbbbc1ae2012-02-24 11:30:18 +0000710 }
Sukumar Ghoraide941242010-09-18 20:32:33 -0700711
Pantelis Antoniou93bfd612014-03-11 19:34:20 +0200712 cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
John Rigby8feafcc2011-04-18 05:50:08 +0000713
John Rigby4ca92442011-04-19 05:48:14 +0000714#if defined(CONFIG_OMAP34XX)
715 /*
716 * Silicon revs 2.1 and older do not support multiblock transfers.
717 */
718 if ((get_cpu_family() == CPU_OMAP34XX) && (get_cpu_rev() <= CPU_3XX_ES21))
Pantelis Antoniou93bfd612014-03-11 19:34:20 +0200719 cfg->b_max = 1;
John Rigby4ca92442011-04-19 05:48:14 +0000720#endif
Pantelis Antoniou93bfd612014-03-11 19:34:20 +0200721 mmc = mmc_create(cfg, priv_data);
722 if (mmc == NULL)
723 return -1;
Sukumar Ghoraide941242010-09-18 20:32:33 -0700724
725 return 0;
726}