Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 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 <mmc.h> |
| 28 | #include <part.h> |
| 29 | #include <i2c.h> |
| 30 | #include <twl4030.h> |
Balaji T K | 14fa2dd | 2011-09-08 06:34:57 +0000 | [diff] [blame] | 31 | #include <twl6030.h> |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 32 | #include <asm/io.h> |
| 33 | #include <asm/arch/mmc_host_def.h> |
Dirk Behme | 96e0e7b | 2011-05-15 09:04:47 +0000 | [diff] [blame] | 34 | #include <asm/arch/sys_proto.h> |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 35 | |
Grazvydas Ignotas | 25c719e | 2012-03-19 12:12:06 +0000 | [diff] [blame^] | 36 | /* common definitions for all OMAPs */ |
| 37 | #define SYSCTL_SRC (1 << 25) |
| 38 | #define SYSCTL_SRD (1 << 26) |
| 39 | |
Nishanth Menon | eb9a28f | 2010-11-19 11:18:12 -0500 | [diff] [blame] | 40 | /* If we fail after 1 second wait, something is really bad */ |
| 41 | #define MAX_RETRY_MS 1000 |
| 42 | |
Sricharan | 933efe6 | 2011-11-15 09:49:53 -0500 | [diff] [blame] | 43 | static int mmc_read_data(struct hsmmc *mmc_base, char *buf, unsigned int size); |
| 44 | static int mmc_write_data(struct hsmmc *mmc_base, const char *buf, |
| 45 | unsigned int siz); |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 46 | static struct mmc hsmmc_dev[2]; |
Balaji T K | 14fa2dd | 2011-09-08 06:34:57 +0000 | [diff] [blame] | 47 | |
| 48 | #if defined(CONFIG_OMAP44XX) && defined(CONFIG_TWL6030_POWER) |
| 49 | static void omap4_vmmc_pbias_config(struct mmc *mmc) |
| 50 | { |
| 51 | u32 value = 0; |
| 52 | struct omap4_sys_ctrl_regs *const ctrl = |
| 53 | (struct omap4_sys_ctrl_regs *)SYSCTRL_GENERAL_CORE_BASE; |
| 54 | |
| 55 | |
| 56 | value = readl(&ctrl->control_pbiaslite); |
| 57 | value &= ~(MMC1_PBIASLITE_PWRDNZ | MMC1_PWRDNZ); |
| 58 | writel(value, &ctrl->control_pbiaslite); |
| 59 | /* set VMMC to 3V */ |
| 60 | twl6030_power_mmc_init(); |
| 61 | value = readl(&ctrl->control_pbiaslite); |
| 62 | value |= MMC1_PBIASLITE_VMODE | MMC1_PBIASLITE_PWRDNZ | MMC1_PWRDNZ; |
| 63 | writel(value, &ctrl->control_pbiaslite); |
| 64 | } |
| 65 | #endif |
| 66 | |
| 67 | unsigned char mmc_board_init(struct mmc *mmc) |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 68 | { |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 69 | #if defined(CONFIG_OMAP34XX) |
| 70 | t2_t *t2_base = (t2_t *)T2_BASE; |
| 71 | struct prcm *prcm_base = (struct prcm *)PRCM_BASE; |
Grazvydas Ignotas | b1e725f | 2012-03-19 03:50:53 +0000 | [diff] [blame] | 72 | u32 pbias_lite; |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 73 | |
Grazvydas Ignotas | b1e725f | 2012-03-19 03:50:53 +0000 | [diff] [blame] | 74 | pbias_lite = readl(&t2_base->pbias_lite); |
| 75 | pbias_lite &= ~(PBIASLITEPWRDNZ1 | PBIASLITEPWRDNZ0); |
| 76 | writel(pbias_lite, &t2_base->pbias_lite); |
| 77 | #endif |
| 78 | #if defined(CONFIG_TWL4030_POWER) |
| 79 | twl4030_power_mmc_init(); |
| 80 | mdelay(100); /* ramp-up delay from Linux code */ |
| 81 | #endif |
| 82 | #if defined(CONFIG_OMAP34XX) |
| 83 | writel(pbias_lite | PBIASLITEPWRDNZ1 | |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 84 | PBIASSPEEDCTRL0 | PBIASLITEPWRDNZ0, |
| 85 | &t2_base->pbias_lite); |
| 86 | |
| 87 | writel(readl(&t2_base->devconf0) | MMCSDIO1ADPCLKISEL, |
| 88 | &t2_base->devconf0); |
| 89 | |
| 90 | writel(readl(&t2_base->devconf1) | MMCSDIO2ADPCLKISEL, |
| 91 | &t2_base->devconf1); |
| 92 | |
| 93 | writel(readl(&prcm_base->fclken1_core) | |
| 94 | EN_MMC1 | EN_MMC2 | EN_MMC3, |
| 95 | &prcm_base->fclken1_core); |
| 96 | |
| 97 | writel(readl(&prcm_base->iclken1_core) | |
| 98 | EN_MMC1 | EN_MMC2 | EN_MMC3, |
| 99 | &prcm_base->iclken1_core); |
| 100 | #endif |
| 101 | |
Balaji T K | 14fa2dd | 2011-09-08 06:34:57 +0000 | [diff] [blame] | 102 | #if defined(CONFIG_OMAP44XX) && defined(CONFIG_TWL6030_POWER) |
| 103 | /* PBIAS config needed for MMC1 only */ |
| 104 | if (mmc->block_dev.dev == 0) |
| 105 | omap4_vmmc_pbias_config(mmc); |
| 106 | #endif |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 107 | |
| 108 | return 0; |
| 109 | } |
| 110 | |
Sricharan | 933efe6 | 2011-11-15 09:49:53 -0500 | [diff] [blame] | 111 | void mmc_init_stream(struct hsmmc *mmc_base) |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 112 | { |
Nishanth Menon | eb9a28f | 2010-11-19 11:18:12 -0500 | [diff] [blame] | 113 | ulong start; |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 114 | |
| 115 | writel(readl(&mmc_base->con) | INIT_INITSTREAM, &mmc_base->con); |
| 116 | |
| 117 | writel(MMC_CMD0, &mmc_base->cmd); |
Nishanth Menon | eb9a28f | 2010-11-19 11:18:12 -0500 | [diff] [blame] | 118 | start = get_timer(0); |
| 119 | while (!(readl(&mmc_base->stat) & CC_MASK)) { |
| 120 | if (get_timer(0) - start > MAX_RETRY_MS) { |
| 121 | printf("%s: timedout waiting for cc!\n", __func__); |
| 122 | return; |
| 123 | } |
| 124 | } |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 125 | writel(CC_MASK, &mmc_base->stat) |
| 126 | ; |
| 127 | writel(MMC_CMD0, &mmc_base->cmd) |
| 128 | ; |
Nishanth Menon | eb9a28f | 2010-11-19 11:18:12 -0500 | [diff] [blame] | 129 | start = get_timer(0); |
| 130 | while (!(readl(&mmc_base->stat) & CC_MASK)) { |
| 131 | if (get_timer(0) - start > MAX_RETRY_MS) { |
| 132 | printf("%s: timedout waiting for cc2!\n", __func__); |
| 133 | return; |
| 134 | } |
| 135 | } |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 136 | writel(readl(&mmc_base->con) & ~INIT_INITSTREAM, &mmc_base->con); |
| 137 | } |
| 138 | |
| 139 | |
| 140 | static int mmc_init_setup(struct mmc *mmc) |
| 141 | { |
Sricharan | 933efe6 | 2011-11-15 09:49:53 -0500 | [diff] [blame] | 142 | struct hsmmc *mmc_base = (struct hsmmc *)mmc->priv; |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 143 | unsigned int reg_val; |
| 144 | unsigned int dsor; |
Nishanth Menon | eb9a28f | 2010-11-19 11:18:12 -0500 | [diff] [blame] | 145 | ulong start; |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 146 | |
Balaji T K | 14fa2dd | 2011-09-08 06:34:57 +0000 | [diff] [blame] | 147 | mmc_board_init(mmc); |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 148 | |
| 149 | writel(readl(&mmc_base->sysconfig) | MMC_SOFTRESET, |
| 150 | &mmc_base->sysconfig); |
Nishanth Menon | eb9a28f | 2010-11-19 11:18:12 -0500 | [diff] [blame] | 151 | start = get_timer(0); |
| 152 | while ((readl(&mmc_base->sysstatus) & RESETDONE) == 0) { |
| 153 | if (get_timer(0) - start > MAX_RETRY_MS) { |
| 154 | printf("%s: timedout waiting for cc2!\n", __func__); |
| 155 | return TIMEOUT; |
| 156 | } |
| 157 | } |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 158 | writel(readl(&mmc_base->sysctl) | SOFTRESETALL, &mmc_base->sysctl); |
Nishanth Menon | eb9a28f | 2010-11-19 11:18:12 -0500 | [diff] [blame] | 159 | start = get_timer(0); |
| 160 | while ((readl(&mmc_base->sysctl) & SOFTRESETALL) != 0x0) { |
| 161 | if (get_timer(0) - start > MAX_RETRY_MS) { |
| 162 | printf("%s: timedout waiting for softresetall!\n", |
| 163 | __func__); |
| 164 | return TIMEOUT; |
| 165 | } |
| 166 | } |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 167 | writel(DTW_1_BITMODE | SDBP_PWROFF | SDVS_3V0, &mmc_base->hctl); |
| 168 | writel(readl(&mmc_base->capa) | VS30_3V0SUP | VS18_1V8SUP, |
| 169 | &mmc_base->capa); |
| 170 | |
| 171 | reg_val = readl(&mmc_base->con) & RESERVED_MASK; |
| 172 | |
| 173 | writel(CTPL_MMC_SD | reg_val | WPP_ACTIVEHIGH | CDP_ACTIVEHIGH | |
| 174 | MIT_CTO | DW8_1_4BITMODE | MODE_FUNC | STR_BLOCK | |
| 175 | HR_NOHOSTRESP | INIT_NOINIT | NOOPENDRAIN, &mmc_base->con); |
| 176 | |
| 177 | dsor = 240; |
| 178 | mmc_reg_out(&mmc_base->sysctl, (ICE_MASK | DTO_MASK | CEN_MASK), |
| 179 | (ICE_STOP | DTO_15THDTO | CEN_DISABLE)); |
| 180 | mmc_reg_out(&mmc_base->sysctl, ICE_MASK | CLKD_MASK, |
| 181 | (dsor << CLKD_OFFSET) | ICE_OSCILLATE); |
Nishanth Menon | eb9a28f | 2010-11-19 11:18:12 -0500 | [diff] [blame] | 182 | start = get_timer(0); |
| 183 | while ((readl(&mmc_base->sysctl) & ICS_MASK) == ICS_NOTREADY) { |
| 184 | if (get_timer(0) - start > MAX_RETRY_MS) { |
| 185 | printf("%s: timedout waiting for ics!\n", __func__); |
| 186 | return TIMEOUT; |
| 187 | } |
| 188 | } |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 189 | writel(readl(&mmc_base->sysctl) | CEN_ENABLE, &mmc_base->sysctl); |
| 190 | |
| 191 | writel(readl(&mmc_base->hctl) | SDBP_PWRON, &mmc_base->hctl); |
| 192 | |
| 193 | writel(IE_BADA | IE_CERR | IE_DEB | IE_DCRC | IE_DTO | IE_CIE | |
| 194 | IE_CEB | IE_CCRC | IE_CTO | IE_BRR | IE_BWR | IE_TC | IE_CC, |
| 195 | &mmc_base->ie); |
| 196 | |
| 197 | mmc_init_stream(mmc_base); |
| 198 | |
| 199 | return 0; |
| 200 | } |
| 201 | |
Grazvydas Ignotas | 25c719e | 2012-03-19 12:12:06 +0000 | [diff] [blame^] | 202 | /* |
| 203 | * MMC controller internal finite state machine reset |
| 204 | * |
| 205 | * Used to reset command or data internal state machines, using respectively |
| 206 | * SRC or SRD bit of SYSCTL register |
| 207 | */ |
| 208 | static void mmc_reset_controller_fsm(struct hsmmc *mmc_base, u32 bit) |
| 209 | { |
| 210 | ulong start; |
| 211 | |
| 212 | mmc_reg_out(&mmc_base->sysctl, bit, bit); |
| 213 | |
| 214 | start = get_timer(0); |
| 215 | while ((readl(&mmc_base->sysctl) & bit) != 0) { |
| 216 | if (get_timer(0) - start > MAX_RETRY_MS) { |
| 217 | printf("%s: timedout waiting for sysctl %x to clear\n", |
| 218 | __func__, bit); |
| 219 | return; |
| 220 | } |
| 221 | } |
| 222 | } |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 223 | |
| 224 | static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, |
| 225 | struct mmc_data *data) |
| 226 | { |
Sricharan | 933efe6 | 2011-11-15 09:49:53 -0500 | [diff] [blame] | 227 | struct hsmmc *mmc_base = (struct hsmmc *)mmc->priv; |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 228 | unsigned int flags, mmc_stat; |
Nishanth Menon | eb9a28f | 2010-11-19 11:18:12 -0500 | [diff] [blame] | 229 | ulong start; |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 230 | |
Nishanth Menon | eb9a28f | 2010-11-19 11:18:12 -0500 | [diff] [blame] | 231 | start = get_timer(0); |
Tom Rini | a7778f8 | 2012-01-30 11:22:25 +0000 | [diff] [blame] | 232 | while ((readl(&mmc_base->pstate) & (DATI_MASK | CMDI_MASK)) != 0) { |
Nishanth Menon | eb9a28f | 2010-11-19 11:18:12 -0500 | [diff] [blame] | 233 | if (get_timer(0) - start > MAX_RETRY_MS) { |
Tom Rini | a7778f8 | 2012-01-30 11:22:25 +0000 | [diff] [blame] | 234 | printf("%s: timedout waiting on cmd inhibit to clear\n", |
| 235 | __func__); |
Nishanth Menon | eb9a28f | 2010-11-19 11:18:12 -0500 | [diff] [blame] | 236 | return TIMEOUT; |
| 237 | } |
| 238 | } |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 239 | writel(0xFFFFFFFF, &mmc_base->stat); |
Nishanth Menon | eb9a28f | 2010-11-19 11:18:12 -0500 | [diff] [blame] | 240 | start = get_timer(0); |
| 241 | while (readl(&mmc_base->stat)) { |
| 242 | if (get_timer(0) - start > MAX_RETRY_MS) { |
Grazvydas Ignotas | 15ceb1d | 2012-03-19 12:11:43 +0000 | [diff] [blame] | 243 | printf("%s: timedout waiting for STAT (%x) to clear\n", |
| 244 | __func__, readl(&mmc_base->stat)); |
Nishanth Menon | eb9a28f | 2010-11-19 11:18:12 -0500 | [diff] [blame] | 245 | return TIMEOUT; |
| 246 | } |
| 247 | } |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 248 | /* |
| 249 | * CMDREG |
| 250 | * CMDIDX[13:8] : Command index |
| 251 | * DATAPRNT[5] : Data Present Select |
| 252 | * ENCMDIDX[4] : Command Index Check Enable |
| 253 | * ENCMDCRC[3] : Command CRC Check Enable |
| 254 | * RSPTYP[1:0] |
| 255 | * 00 = No Response |
| 256 | * 01 = Length 136 |
| 257 | * 10 = Length 48 |
| 258 | * 11 = Length 48 Check busy after response |
| 259 | */ |
| 260 | /* Delay added before checking the status of frq change |
| 261 | * retry not supported by mmc.c(core file) |
| 262 | */ |
| 263 | if (cmd->cmdidx == SD_CMD_APP_SEND_SCR) |
| 264 | udelay(50000); /* wait 50 ms */ |
| 265 | |
| 266 | if (!(cmd->resp_type & MMC_RSP_PRESENT)) |
| 267 | flags = 0; |
| 268 | else if (cmd->resp_type & MMC_RSP_136) |
| 269 | flags = RSP_TYPE_LGHT136 | CICE_NOCHECK; |
| 270 | else if (cmd->resp_type & MMC_RSP_BUSY) |
| 271 | flags = RSP_TYPE_LGHT48B; |
| 272 | else |
| 273 | flags = RSP_TYPE_LGHT48; |
| 274 | |
| 275 | /* enable default flags */ |
| 276 | flags = flags | (CMD_TYPE_NORMAL | CICE_NOCHECK | CCCE_NOCHECK | |
| 277 | MSBS_SGLEBLK | ACEN_DISABLE | BCE_DISABLE | DE_DISABLE); |
| 278 | |
| 279 | if (cmd->resp_type & MMC_RSP_CRC) |
| 280 | flags |= CCCE_CHECK; |
| 281 | if (cmd->resp_type & MMC_RSP_OPCODE) |
| 282 | flags |= CICE_CHECK; |
| 283 | |
| 284 | if (data) { |
| 285 | if ((cmd->cmdidx == MMC_CMD_READ_MULTIPLE_BLOCK) || |
| 286 | (cmd->cmdidx == MMC_CMD_WRITE_MULTIPLE_BLOCK)) { |
| 287 | flags |= (MSBS_MULTIBLK | BCE_ENABLE); |
| 288 | data->blocksize = 512; |
| 289 | writel(data->blocksize | (data->blocks << 16), |
| 290 | &mmc_base->blk); |
| 291 | } else |
| 292 | writel(data->blocksize | NBLK_STPCNT, &mmc_base->blk); |
| 293 | |
| 294 | if (data->flags & MMC_DATA_READ) |
| 295 | flags |= (DP_DATA | DDIR_READ); |
| 296 | else |
| 297 | flags |= (DP_DATA | DDIR_WRITE); |
| 298 | } |
| 299 | |
| 300 | writel(cmd->cmdarg, &mmc_base->arg); |
| 301 | writel((cmd->cmdidx << 24) | flags, &mmc_base->cmd); |
| 302 | |
Nishanth Menon | eb9a28f | 2010-11-19 11:18:12 -0500 | [diff] [blame] | 303 | start = get_timer(0); |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 304 | do { |
| 305 | mmc_stat = readl(&mmc_base->stat); |
Nishanth Menon | eb9a28f | 2010-11-19 11:18:12 -0500 | [diff] [blame] | 306 | if (get_timer(0) - start > MAX_RETRY_MS) { |
| 307 | printf("%s : timeout: No status update\n", __func__); |
| 308 | return TIMEOUT; |
| 309 | } |
| 310 | } while (!mmc_stat); |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 311 | |
Grazvydas Ignotas | 25c719e | 2012-03-19 12:12:06 +0000 | [diff] [blame^] | 312 | if ((mmc_stat & IE_CTO) != 0) { |
| 313 | mmc_reset_controller_fsm(mmc_base, SYSCTL_SRC); |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 314 | return TIMEOUT; |
Grazvydas Ignotas | 25c719e | 2012-03-19 12:12:06 +0000 | [diff] [blame^] | 315 | } else if ((mmc_stat & ERRI_MASK) != 0) |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 316 | return -1; |
| 317 | |
| 318 | if (mmc_stat & CC_MASK) { |
| 319 | writel(CC_MASK, &mmc_base->stat); |
| 320 | if (cmd->resp_type & MMC_RSP_PRESENT) { |
| 321 | if (cmd->resp_type & MMC_RSP_136) { |
| 322 | /* response type 2 */ |
| 323 | cmd->response[3] = readl(&mmc_base->rsp10); |
| 324 | cmd->response[2] = readl(&mmc_base->rsp32); |
| 325 | cmd->response[1] = readl(&mmc_base->rsp54); |
| 326 | cmd->response[0] = readl(&mmc_base->rsp76); |
| 327 | } else |
| 328 | /* response types 1, 1b, 3, 4, 5, 6 */ |
| 329 | cmd->response[0] = readl(&mmc_base->rsp10); |
| 330 | } |
| 331 | } |
| 332 | |
| 333 | if (data && (data->flags & MMC_DATA_READ)) { |
| 334 | mmc_read_data(mmc_base, data->dest, |
| 335 | data->blocksize * data->blocks); |
| 336 | } else if (data && (data->flags & MMC_DATA_WRITE)) { |
| 337 | mmc_write_data(mmc_base, data->src, |
| 338 | data->blocksize * data->blocks); |
| 339 | } |
| 340 | return 0; |
| 341 | } |
| 342 | |
Sricharan | 933efe6 | 2011-11-15 09:49:53 -0500 | [diff] [blame] | 343 | static int mmc_read_data(struct hsmmc *mmc_base, char *buf, unsigned int size) |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 344 | { |
| 345 | unsigned int *output_buf = (unsigned int *)buf; |
| 346 | unsigned int mmc_stat; |
| 347 | unsigned int count; |
| 348 | |
| 349 | /* |
| 350 | * Start Polled Read |
| 351 | */ |
| 352 | count = (size > MMCSD_SECTOR_SIZE) ? MMCSD_SECTOR_SIZE : size; |
| 353 | count /= 4; |
| 354 | |
| 355 | while (size) { |
Nishanth Menon | eb9a28f | 2010-11-19 11:18:12 -0500 | [diff] [blame] | 356 | ulong start = get_timer(0); |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 357 | do { |
| 358 | mmc_stat = readl(&mmc_base->stat); |
Nishanth Menon | eb9a28f | 2010-11-19 11:18:12 -0500 | [diff] [blame] | 359 | if (get_timer(0) - start > MAX_RETRY_MS) { |
| 360 | printf("%s: timedout waiting for status!\n", |
| 361 | __func__); |
| 362 | return TIMEOUT; |
| 363 | } |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 364 | } while (mmc_stat == 0); |
| 365 | |
Grazvydas Ignotas | 25c719e | 2012-03-19 12:12:06 +0000 | [diff] [blame^] | 366 | if ((mmc_stat & (IE_DTO | IE_DCRC | IE_DEB)) != 0) |
| 367 | mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD); |
| 368 | |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 369 | if ((mmc_stat & ERRI_MASK) != 0) |
| 370 | return 1; |
| 371 | |
| 372 | if (mmc_stat & BRR_MASK) { |
| 373 | unsigned int k; |
| 374 | |
| 375 | writel(readl(&mmc_base->stat) | BRR_MASK, |
| 376 | &mmc_base->stat); |
| 377 | for (k = 0; k < count; k++) { |
| 378 | *output_buf = readl(&mmc_base->data); |
| 379 | output_buf++; |
| 380 | } |
| 381 | size -= (count*4); |
| 382 | } |
| 383 | |
| 384 | if (mmc_stat & BWR_MASK) |
| 385 | writel(readl(&mmc_base->stat) | BWR_MASK, |
| 386 | &mmc_base->stat); |
| 387 | |
| 388 | if (mmc_stat & TC_MASK) { |
| 389 | writel(readl(&mmc_base->stat) | TC_MASK, |
| 390 | &mmc_base->stat); |
| 391 | break; |
| 392 | } |
| 393 | } |
| 394 | return 0; |
| 395 | } |
| 396 | |
Sricharan | 933efe6 | 2011-11-15 09:49:53 -0500 | [diff] [blame] | 397 | static int mmc_write_data(struct hsmmc *mmc_base, const char *buf, |
| 398 | unsigned int size) |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 399 | { |
| 400 | unsigned int *input_buf = (unsigned int *)buf; |
| 401 | unsigned int mmc_stat; |
| 402 | unsigned int count; |
| 403 | |
| 404 | /* |
| 405 | * Start Polled Read |
| 406 | */ |
| 407 | count = (size > MMCSD_SECTOR_SIZE) ? MMCSD_SECTOR_SIZE : size; |
| 408 | count /= 4; |
| 409 | |
| 410 | while (size) { |
Nishanth Menon | eb9a28f | 2010-11-19 11:18:12 -0500 | [diff] [blame] | 411 | ulong start = get_timer(0); |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 412 | do { |
| 413 | mmc_stat = readl(&mmc_base->stat); |
Nishanth Menon | eb9a28f | 2010-11-19 11:18:12 -0500 | [diff] [blame] | 414 | if (get_timer(0) - start > MAX_RETRY_MS) { |
| 415 | printf("%s: timedout waiting for status!\n", |
| 416 | __func__); |
| 417 | return TIMEOUT; |
| 418 | } |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 419 | } while (mmc_stat == 0); |
| 420 | |
Grazvydas Ignotas | 25c719e | 2012-03-19 12:12:06 +0000 | [diff] [blame^] | 421 | if ((mmc_stat & (IE_DTO | IE_DCRC | IE_DEB)) != 0) |
| 422 | mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD); |
| 423 | |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 424 | if ((mmc_stat & ERRI_MASK) != 0) |
| 425 | return 1; |
| 426 | |
| 427 | if (mmc_stat & BWR_MASK) { |
| 428 | unsigned int k; |
| 429 | |
| 430 | writel(readl(&mmc_base->stat) | BWR_MASK, |
| 431 | &mmc_base->stat); |
| 432 | for (k = 0; k < count; k++) { |
| 433 | writel(*input_buf, &mmc_base->data); |
| 434 | input_buf++; |
| 435 | } |
| 436 | size -= (count*4); |
| 437 | } |
| 438 | |
| 439 | if (mmc_stat & BRR_MASK) |
| 440 | writel(readl(&mmc_base->stat) | BRR_MASK, |
| 441 | &mmc_base->stat); |
| 442 | |
| 443 | if (mmc_stat & TC_MASK) { |
| 444 | writel(readl(&mmc_base->stat) | TC_MASK, |
| 445 | &mmc_base->stat); |
| 446 | break; |
| 447 | } |
| 448 | } |
| 449 | return 0; |
| 450 | } |
| 451 | |
| 452 | static void mmc_set_ios(struct mmc *mmc) |
| 453 | { |
Sricharan | 933efe6 | 2011-11-15 09:49:53 -0500 | [diff] [blame] | 454 | struct hsmmc *mmc_base = (struct hsmmc *)mmc->priv; |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 455 | unsigned int dsor = 0; |
Nishanth Menon | eb9a28f | 2010-11-19 11:18:12 -0500 | [diff] [blame] | 456 | ulong start; |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 457 | |
| 458 | /* configue bus width */ |
| 459 | switch (mmc->bus_width) { |
| 460 | case 8: |
| 461 | writel(readl(&mmc_base->con) | DTW_8_BITMODE, |
| 462 | &mmc_base->con); |
| 463 | break; |
| 464 | |
| 465 | case 4: |
| 466 | writel(readl(&mmc_base->con) & ~DTW_8_BITMODE, |
| 467 | &mmc_base->con); |
| 468 | writel(readl(&mmc_base->hctl) | DTW_4_BITMODE, |
| 469 | &mmc_base->hctl); |
| 470 | break; |
| 471 | |
| 472 | case 1: |
| 473 | default: |
| 474 | writel(readl(&mmc_base->con) & ~DTW_8_BITMODE, |
| 475 | &mmc_base->con); |
| 476 | writel(readl(&mmc_base->hctl) & ~DTW_4_BITMODE, |
| 477 | &mmc_base->hctl); |
| 478 | break; |
| 479 | } |
| 480 | |
| 481 | /* configure clock with 96Mhz system clock. |
| 482 | */ |
| 483 | if (mmc->clock != 0) { |
| 484 | dsor = (MMC_CLOCK_REFERENCE * 1000000 / mmc->clock); |
| 485 | if ((MMC_CLOCK_REFERENCE * 1000000) / dsor > mmc->clock) |
| 486 | dsor++; |
| 487 | } |
| 488 | |
| 489 | mmc_reg_out(&mmc_base->sysctl, (ICE_MASK | DTO_MASK | CEN_MASK), |
| 490 | (ICE_STOP | DTO_15THDTO | CEN_DISABLE)); |
| 491 | |
| 492 | mmc_reg_out(&mmc_base->sysctl, ICE_MASK | CLKD_MASK, |
| 493 | (dsor << CLKD_OFFSET) | ICE_OSCILLATE); |
| 494 | |
Nishanth Menon | eb9a28f | 2010-11-19 11:18:12 -0500 | [diff] [blame] | 495 | start = get_timer(0); |
| 496 | while ((readl(&mmc_base->sysctl) & ICS_MASK) == ICS_NOTREADY) { |
| 497 | if (get_timer(0) - start > MAX_RETRY_MS) { |
| 498 | printf("%s: timedout waiting for ics!\n", __func__); |
| 499 | return; |
| 500 | } |
| 501 | } |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 502 | writel(readl(&mmc_base->sysctl) | CEN_ENABLE, &mmc_base->sysctl); |
| 503 | } |
| 504 | |
| 505 | int omap_mmc_init(int dev_index) |
| 506 | { |
| 507 | struct mmc *mmc; |
| 508 | |
| 509 | mmc = &hsmmc_dev[dev_index]; |
| 510 | |
| 511 | sprintf(mmc->name, "OMAP SD/MMC"); |
| 512 | mmc->send_cmd = mmc_send_cmd; |
| 513 | mmc->set_ios = mmc_set_ios; |
| 514 | mmc->init = mmc_init_setup; |
Thierry Reding | 48972d9 | 2012-01-02 01:15:37 +0000 | [diff] [blame] | 515 | mmc->getcd = NULL; |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 516 | |
| 517 | switch (dev_index) { |
| 518 | case 0: |
Sricharan | 933efe6 | 2011-11-15 09:49:53 -0500 | [diff] [blame] | 519 | mmc->priv = (struct hsmmc *)OMAP_HSMMC1_BASE; |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 520 | break; |
Tom Rini | 1037d58 | 2011-10-12 06:20:50 +0000 | [diff] [blame] | 521 | #ifdef OMAP_HSMMC2_BASE |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 522 | case 1: |
Sricharan | 933efe6 | 2011-11-15 09:49:53 -0500 | [diff] [blame] | 523 | mmc->priv = (struct hsmmc *)OMAP_HSMMC2_BASE; |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 524 | break; |
Tom Rini | 1037d58 | 2011-10-12 06:20:50 +0000 | [diff] [blame] | 525 | #endif |
| 526 | #ifdef OMAP_HSMMC3_BASE |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 527 | case 2: |
Sricharan | 933efe6 | 2011-11-15 09:49:53 -0500 | [diff] [blame] | 528 | mmc->priv = (struct hsmmc *)OMAP_HSMMC3_BASE; |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 529 | break; |
Tom Rini | 1037d58 | 2011-10-12 06:20:50 +0000 | [diff] [blame] | 530 | #endif |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 531 | default: |
Sricharan | 933efe6 | 2011-11-15 09:49:53 -0500 | [diff] [blame] | 532 | mmc->priv = (struct hsmmc *)OMAP_HSMMC1_BASE; |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 533 | return 1; |
| 534 | } |
| 535 | mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195; |
Balaji T K | ecd9af8 | 2011-08-25 04:46:51 +0000 | [diff] [blame] | 536 | mmc->host_caps = MMC_MODE_4BIT | MMC_MODE_HS_52MHz | MMC_MODE_HS | |
| 537 | MMC_MODE_HC; |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 538 | |
| 539 | mmc->f_min = 400000; |
| 540 | mmc->f_max = 52000000; |
| 541 | |
John Rigby | 8feafcc | 2011-04-18 05:50:08 +0000 | [diff] [blame] | 542 | mmc->b_max = 0; |
| 543 | |
John Rigby | 4ca9244 | 2011-04-19 05:48:14 +0000 | [diff] [blame] | 544 | #if defined(CONFIG_OMAP34XX) |
| 545 | /* |
| 546 | * Silicon revs 2.1 and older do not support multiblock transfers. |
| 547 | */ |
| 548 | if ((get_cpu_family() == CPU_OMAP34XX) && (get_cpu_rev() <= CPU_3XX_ES21)) |
| 549 | mmc->b_max = 1; |
| 550 | #endif |
| 551 | |
Sukumar Ghorai | de94124 | 2010-09-18 20:32:33 -0700 | [diff] [blame] | 552 | mmc_register(mmc); |
| 553 | |
| 554 | return 0; |
| 555 | } |