OMAP3: Add MMC support
Add MMC support.
Signed-off-by: Dirk Behme <dirk.behme@googlemail.com>
diff --git a/drivers/mmc/omap3_mmc.c b/drivers/mmc/omap3_mmc.c
new file mode 100644
index 0000000..0148702
--- /dev/null
+++ b/drivers/mmc/omap3_mmc.c
@@ -0,0 +1,558 @@
+/*
+ * (C) Copyright 2008
+ * Texas Instruments, <www.ti.com>
+ * Syed Mohammed Khasim <khasim@ti.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation's version 2 of
+ * the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <config.h>
+#include <common.h>
+#include <fat.h>
+#include <mmc.h>
+#include <part.h>
+#include <i2c.h>
+
+const unsigned short mmc_transspeed_val[15][4] = {
+ {CLKD(10, 1), CLKD(10, 10), CLKD(10, 100), CLKD(10, 1000)},
+ {CLKD(12, 1), CLKD(12, 10), CLKD(12, 100), CLKD(12, 1000)},
+ {CLKD(13, 1), CLKD(13, 10), CLKD(13, 100), CLKD(13, 1000)},
+ {CLKD(15, 1), CLKD(15, 10), CLKD(15, 100), CLKD(15, 1000)},
+ {CLKD(20, 1), CLKD(20, 10), CLKD(20, 100), CLKD(20, 1000)},
+ {CLKD(26, 1), CLKD(26, 10), CLKD(26, 100), CLKD(26, 1000)},
+ {CLKD(30, 1), CLKD(30, 10), CLKD(30, 100), CLKD(30, 1000)},
+ {CLKD(35, 1), CLKD(35, 10), CLKD(35, 100), CLKD(35, 1000)},
+ {CLKD(40, 1), CLKD(40, 10), CLKD(40, 100), CLKD(40, 1000)},
+ {CLKD(45, 1), CLKD(45, 10), CLKD(45, 100), CLKD(45, 1000)},
+ {CLKD(52, 1), CLKD(52, 10), CLKD(52, 100), CLKD(52, 1000)},
+ {CLKD(55, 1), CLKD(55, 10), CLKD(55, 100), CLKD(55, 1000)},
+ {CLKD(60, 1), CLKD(60, 10), CLKD(60, 100), CLKD(60, 1000)},
+ {CLKD(70, 1), CLKD(70, 10), CLKD(70, 100), CLKD(70, 1000)},
+ {CLKD(80, 1), CLKD(80, 10), CLKD(80, 100), CLKD(80, 1000)}
+};
+
+mmc_card_data cur_card_data;
+static block_dev_desc_t mmc_blk_dev;
+
+block_dev_desc_t *mmc_get_dev(int dev)
+{
+ return (block_dev_desc_t *) &mmc_blk_dev;
+}
+
+void twl4030_mmc_config(void)
+{
+ unsigned char data;
+
+ data = 0x20;
+ i2c_write(0x4B, 0x82, 1, &data, 1);
+ data = 0x2;
+ i2c_write(0x4B, 0x85, 1, &data, 1);
+}
+
+unsigned char mmc_board_init(void)
+{
+ unsigned int value = 0;
+
+ twl4030_mmc_config();
+
+ value = CONTROL_PBIAS_LITE;
+ CONTROL_PBIAS_LITE = value | (1 << 2) | (1 << 1) | (1 << 9);
+
+ value = CONTROL_DEV_CONF0;
+ CONTROL_DEV_CONF0 = value | (1 << 24);
+
+ return 1;
+}
+
+void mmc_init_stream(void)
+{
+ volatile unsigned int mmc_stat;
+
+ OMAP_HSMMC_CON |= INIT_INITSTREAM;
+
+ OMAP_HSMMC_CMD = MMC_CMD0;
+ do {
+ mmc_stat = OMAP_HSMMC_STAT;
+ } while (!(mmc_stat & CC_MASK));
+
+ OMAP_HSMMC_STAT = CC_MASK;
+
+ OMAP_HSMMC_CMD = MMC_CMD0;
+ do {
+ mmc_stat = OMAP_HSMMC_STAT;
+ } while (!(mmc_stat & CC_MASK));
+
+ OMAP_HSMMC_STAT = OMAP_HSMMC_STAT;
+ OMAP_HSMMC_CON &= ~INIT_INITSTREAM;
+}
+
+unsigned char mmc_clock_config(unsigned int iclk, unsigned short clk_div)
+{
+ unsigned int val;
+
+ mmc_reg_out(OMAP_HSMMC_SYSCTL, (ICE_MASK | DTO_MASK | CEN_MASK),
+ (ICE_STOP | DTO_15THDTO | CEN_DISABLE));
+
+ switch (iclk) {
+ case CLK_INITSEQ:
+ val = MMC_INIT_SEQ_CLK / 2;
+ break;
+ case CLK_400KHZ:
+ val = MMC_400kHz_CLK;
+ break;
+ case CLK_MISC:
+ val = clk_div;
+ break;
+ default:
+ return 0;
+ }
+ mmc_reg_out(OMAP_HSMMC_SYSCTL,
+ ICE_MASK | CLKD_MASK, (val << CLKD_OFFSET) | ICE_OSCILLATE);
+
+ while ((OMAP_HSMMC_SYSCTL & ICS_MASK) == ICS_NOTREADY) ;
+
+ OMAP_HSMMC_SYSCTL |= CEN_ENABLE;
+ return 1;
+}
+
+unsigned char mmc_init_setup(void)
+{
+ unsigned int reg_val;
+
+ mmc_board_init();
+
+ OMAP_HSMMC_SYSCONFIG |= MMC_SOFTRESET;
+ while ((OMAP_HSMMC_SYSSTATUS & RESETDONE) == 0) ;
+
+ OMAP_HSMMC_SYSCTL |= SOFTRESETALL;
+ while ((OMAP_HSMMC_SYSCTL & SOFTRESETALL) != 0x0) ;
+
+ OMAP_HSMMC_HCTL = DTW_1_BITMODE | SDBP_PWROFF | SDVS_3V0;
+ OMAP_HSMMC_CAPA |= VS30_3V0SUP | VS18_1V8SUP;
+
+ reg_val = OMAP_HSMMC_CON & RESERVED_MASK;
+
+ OMAP_HSMMC_CON = CTPL_MMC_SD | reg_val | WPP_ACTIVEHIGH |
+ CDP_ACTIVEHIGH | MIT_CTO | DW8_1_4BITMODE | MODE_FUNC |
+ STR_BLOCK | HR_NOHOSTRESP | INIT_NOINIT | NOOPENDRAIN;
+
+ mmc_clock_config(CLK_INITSEQ, 0);
+ OMAP_HSMMC_HCTL |= SDBP_PWRON;
+
+ OMAP_HSMMC_IE = 0x307f0033;
+
+ mmc_init_stream();
+ return 1;
+}
+
+unsigned char mmc_send_cmd(unsigned int cmd, unsigned int arg,
+ unsigned int *response)
+{
+ volatile unsigned int mmc_stat;
+
+ while ((OMAP_HSMMC_PSTATE & DATI_MASK) == DATI_CMDDIS) ;
+
+ OMAP_HSMMC_BLK = BLEN_512BYTESLEN | NBLK_STPCNT;
+ OMAP_HSMMC_STAT = 0xFFFFFFFF;
+ OMAP_HSMMC_ARG = arg;
+ OMAP_HSMMC_CMD = cmd | CMD_TYPE_NORMAL | CICE_NOCHECK |
+ CCCE_NOCHECK | MSBS_SGLEBLK | ACEN_DISABLE | BCE_DISABLE |
+ DE_DISABLE;
+
+ while (1) {
+ do {
+ mmc_stat = OMAP_HSMMC_STAT;
+ } while (mmc_stat == 0);
+
+ if ((mmc_stat & ERRI_MASK) != 0)
+ return (unsigned char) mmc_stat;
+
+ if (mmc_stat & CC_MASK) {
+ OMAP_HSMMC_STAT = CC_MASK;
+ response[0] = OMAP_HSMMC_RSP10;
+ if ((cmd & RSP_TYPE_MASK) == RSP_TYPE_LGHT136) {
+ response[1] = OMAP_HSMMC_RSP32;
+ response[2] = OMAP_HSMMC_RSP54;
+ response[3] = OMAP_HSMMC_RSP76;
+ }
+ break;
+ }
+ }
+ return 1;
+}
+
+unsigned char mmc_read_data(unsigned int *output_buf)
+{
+ volatile unsigned int mmc_stat;
+ unsigned int read_count = 0;
+
+ /*
+ * Start Polled Read
+ */
+ while (1) {
+ do {
+ mmc_stat = OMAP_HSMMC_STAT;
+ } while (mmc_stat == 0);
+
+ if ((mmc_stat & ERRI_MASK) != 0)
+ return (unsigned char) mmc_stat;
+
+ if (mmc_stat & BRR_MASK) {
+ unsigned int k;
+
+ OMAP_HSMMC_STAT |= BRR_MASK;
+ for (k = 0; k < MMCSD_SECTOR_SIZE / 4; k++) {
+ *output_buf = OMAP_HSMMC_DATA;
+ output_buf++;
+ read_count += 4;
+ }
+ }
+
+ if (mmc_stat & BWR_MASK)
+ OMAP_HSMMC_STAT |= BWR_MASK;
+
+ if (mmc_stat & TC_MASK) {
+ OMAP_HSMMC_STAT |= TC_MASK;
+ break;
+ }
+ }
+ return 1;
+}
+
+unsigned char mmc_detect_card(mmc_card_data *mmc_card_cur)
+{
+ unsigned char err;
+ unsigned int argument = 0;
+ unsigned int ocr_value, ocr_recvd, ret_cmd41, hcs_val;
+ unsigned int resp[4];
+ unsigned short retry_cnt = 2000;
+
+ /* Set to Initialization Clock */
+ err = mmc_clock_config(CLK_400KHZ, 0);
+ if (err != 1)
+ return err;
+
+ mmc_card_cur->RCA = MMC_RELATIVE_CARD_ADDRESS;
+ argument = 0x00000000;
+
+ ocr_value = (0x1FF << 15);
+ err = mmc_send_cmd(MMC_CMD0, argument, resp);
+ if (err != 1)
+ return err;
+
+ argument = SD_CMD8_CHECK_PATTERN | SD_CMD8_2_7_3_6_V_RANGE;
+ err = mmc_send_cmd(MMC_SDCMD8, argument, resp);
+ hcs_val = (err == 1) ?
+ MMC_OCR_REG_HOST_CAPACITY_SUPPORT_SECTOR :
+ MMC_OCR_REG_HOST_CAPACITY_SUPPORT_BYTE;
+
+ argument = 0x0000 << 16;
+ err = mmc_send_cmd(MMC_CMD55, argument, resp);
+ if (err == 1) {
+ mmc_card_cur->card_type = SD_CARD;
+ ocr_value |= hcs_val;
+ ret_cmd41 = MMC_ACMD41;
+ } else {
+ mmc_card_cur->card_type = MMC_CARD;
+ ocr_value |= MMC_OCR_REG_ACCESS_MODE_SECTOR;
+ ret_cmd41 = MMC_CMD1;
+ OMAP_HSMMC_CON &= ~OD;
+ OMAP_HSMMC_CON |= OPENDRAIN;
+ }
+
+ argument = ocr_value;
+ err = mmc_send_cmd(ret_cmd41, argument, resp);
+ if (err != 1)
+ return err;
+
+ ocr_recvd = ((mmc_resp_r3 *) resp)->ocr;
+
+ while (!(ocr_recvd & (0x1 << 31)) && (retry_cnt > 0)) {
+ retry_cnt--;
+ if (mmc_card_cur->card_type == SD_CARD) {
+ argument = 0x0000 << 16;
+ err = mmc_send_cmd(MMC_CMD55, argument, resp);
+ }
+
+ argument = ocr_value;
+ err = mmc_send_cmd(ret_cmd41, argument, resp);
+ if (err != 1)
+ return err;
+ ocr_recvd = ((mmc_resp_r3 *) resp)->ocr;
+ }
+
+ if (!(ocr_recvd & (0x1 << 31)))
+ return 0;
+
+ if (mmc_card_cur->card_type == MMC_CARD) {
+ if ((ocr_recvd & MMC_OCR_REG_ACCESS_MODE_MASK) ==
+ MMC_OCR_REG_ACCESS_MODE_SECTOR) {
+ mmc_card_cur->mode = SECTOR_MODE;
+ } else {
+ mmc_card_cur->mode = BYTE_MODE;
+ }
+
+ ocr_recvd &= ~MMC_OCR_REG_ACCESS_MODE_MASK;
+ } else {
+ if ((ocr_recvd & MMC_OCR_REG_HOST_CAPACITY_SUPPORT_MASK)
+ == MMC_OCR_REG_HOST_CAPACITY_SUPPORT_SECTOR) {
+ mmc_card_cur->mode = SECTOR_MODE;
+ } else {
+ mmc_card_cur->mode = BYTE_MODE;
+ }
+ ocr_recvd &= ~MMC_OCR_REG_HOST_CAPACITY_SUPPORT_MASK;
+ }
+
+ ocr_recvd &= ~(0x1 << 31);
+ if (!(ocr_recvd & ocr_value))
+ return 0;
+
+ err = mmc_send_cmd(MMC_CMD2, argument, resp);
+ if (err != 1)
+ return err;
+
+ if (mmc_card_cur->card_type == MMC_CARD) {
+ argument = mmc_card_cur->RCA << 16;
+ err = mmc_send_cmd(MMC_CMD3, argument, resp);
+ if (err != 1)
+ return err;
+ } else {
+ argument = 0x00000000;
+ err = mmc_send_cmd(MMC_SDCMD3, argument, resp);
+ if (err != 1)
+ return err;
+
+ mmc_card_cur->RCA = ((mmc_resp_r6 *) resp)->newpublishedrca;
+ }
+
+ OMAP_HSMMC_CON &= ~OD;
+ OMAP_HSMMC_CON |= NOOPENDRAIN;
+ return 1;
+}
+
+unsigned char mmc_read_cardsize(mmc_card_data *mmc_dev_data,
+ mmc_csd_reg_t *cur_csd)
+{
+ mmc_extended_csd_reg_t ext_csd;
+ unsigned int size, count, blk_len, blk_no, card_size, argument;
+ unsigned char err;
+ unsigned int resp[4];
+
+ if (mmc_dev_data->mode == SECTOR_MODE) {
+ if (mmc_dev_data->card_type == SD_CARD) {
+ card_size =
+ (((mmc_sd2_csd_reg_t *) cur_csd)->
+ c_size_lsb & MMC_SD2_CSD_C_SIZE_LSB_MASK) |
+ ((((mmc_sd2_csd_reg_t *) cur_csd)->
+ c_size_msb & MMC_SD2_CSD_C_SIZE_MSB_MASK)
+ << MMC_SD2_CSD_C_SIZE_MSB_OFFSET);
+ mmc_dev_data->size = card_size * 1024;
+ if (mmc_dev_data->size == 0)
+ return 0;
+ } else {
+ argument = 0x00000000;
+ err = mmc_send_cmd(MMC_CMD8, argument, resp);
+ if (err != 1)
+ return err;
+ err = mmc_read_data((unsigned int *) &ext_csd);
+ if (err != 1)
+ return err;
+ mmc_dev_data->size = ext_csd.sectorcount;
+
+ if (mmc_dev_data->size == 0)
+ mmc_dev_data->size = 8388608;
+ }
+ } else {
+ if (cur_csd->c_size_mult >= 8)
+ return 0;
+
+ if (cur_csd->read_bl_len >= 12)
+ return 0;
+
+ /* Compute size */
+ count = 1 << (cur_csd->c_size_mult + 2);
+ card_size = (cur_csd->c_size_lsb & MMC_CSD_C_SIZE_LSB_MASK) |
+ ((cur_csd->c_size_msb & MMC_CSD_C_SIZE_MSB_MASK)
+ << MMC_CSD_C_SIZE_MSB_OFFSET);
+ blk_no = (card_size + 1) * count;
+ blk_len = 1 << cur_csd->read_bl_len;
+ size = blk_no * blk_len;
+ mmc_dev_data->size = size / MMCSD_SECTOR_SIZE;
+ if (mmc_dev_data->size == 0)
+ return 0;
+ }
+ return 1;
+}
+
+unsigned char omap_mmc_read_sect(unsigned int start_sec, unsigned int num_bytes,
+ mmc_card_data *mmc_c,
+ unsigned long *output_buf)
+{
+ unsigned char err;
+ unsigned int argument;
+ unsigned int resp[4];
+ unsigned int num_sec_val =
+ (num_bytes + (MMCSD_SECTOR_SIZE - 1)) / MMCSD_SECTOR_SIZE;
+ unsigned int sec_inc_val;
+
+ if (num_sec_val == 0)
+ return 1;
+
+ if (mmc_c->mode == SECTOR_MODE) {
+ argument = start_sec;
+ sec_inc_val = 1;
+ } else {
+ argument = start_sec * MMCSD_SECTOR_SIZE;
+ sec_inc_val = MMCSD_SECTOR_SIZE;
+ }
+
+ while (num_sec_val) {
+ err = mmc_send_cmd(MMC_CMD17, argument, resp);
+ if (err != 1)
+ return err;
+
+ err = mmc_read_data((unsigned int *) output_buf);
+ if (err != 1)
+ return err;
+
+ output_buf += (MMCSD_SECTOR_SIZE / 4);
+ argument += sec_inc_val;
+ num_sec_val--;
+ }
+ return 1;
+}
+
+unsigned char configure_mmc(mmc_card_data *mmc_card_cur)
+{
+ unsigned char ret_val;
+ unsigned int argument;
+ unsigned int resp[4];
+ unsigned int trans_clk, trans_fact, trans_unit, retries = 2;
+ mmc_csd_reg_t Card_CSD;
+ unsigned char trans_speed;
+
+ ret_val = mmc_init_setup();
+
+ if (ret_val != 1)
+ return ret_val;
+
+ do {
+ ret_val = mmc_detect_card(mmc_card_cur);
+ retries--;
+ } while ((retries > 0) && (ret_val != 1));
+
+ argument = mmc_card_cur->RCA << 16;
+ ret_val = mmc_send_cmd(MMC_CMD9, argument, resp);
+ if (ret_val != 1)
+ return ret_val;
+
+ ((unsigned int *) &Card_CSD)[3] = resp[3];
+ ((unsigned int *) &Card_CSD)[2] = resp[2];
+ ((unsigned int *) &Card_CSD)[1] = resp[1];
+ ((unsigned int *) &Card_CSD)[0] = resp[0];
+
+ if (mmc_card_cur->card_type == MMC_CARD)
+ mmc_card_cur->version = Card_CSD.spec_vers;
+
+ trans_speed = Card_CSD.tran_speed;
+
+ ret_val = mmc_send_cmd(MMC_CMD4, MMC_DSR_DEFAULT << 16, resp);
+ if (ret_val != 1)
+ return ret_val;
+
+ trans_unit = trans_speed & MMC_CSD_TRAN_SPEED_UNIT_MASK;
+ trans_fact = trans_speed & MMC_CSD_TRAN_SPEED_FACTOR_MASK;
+
+ if (trans_unit > MMC_CSD_TRAN_SPEED_UNIT_100MHZ)
+ return 0;
+
+ if ((trans_fact < MMC_CSD_TRAN_SPEED_FACTOR_1_0) ||
+ (trans_fact > MMC_CSD_TRAN_SPEED_FACTOR_8_0))
+ return 0;
+
+ trans_unit >>= 0;
+ trans_fact >>= 3;
+
+ trans_clk = mmc_transspeed_val[trans_fact - 1][trans_unit] * 2;
+ ret_val = mmc_clock_config(CLK_MISC, trans_clk);
+
+ if (ret_val != 1)
+ return ret_val;
+
+ argument = mmc_card_cur->RCA << 16;
+ ret_val = mmc_send_cmd(MMC_CMD7_SELECT, argument, resp);
+ if (ret_val != 1)
+ return ret_val;
+
+ /* Configure the block length to 512 bytes */
+ argument = MMCSD_SECTOR_SIZE;
+ ret_val = mmc_send_cmd(MMC_CMD16, argument, resp);
+ if (ret_val != 1)
+ return ret_val;
+
+ /* get the card size in sectors */
+ ret_val = mmc_read_cardsize(mmc_card_cur, &Card_CSD);
+ if (ret_val != 1)
+ return ret_val;
+
+ return 1;
+}
+unsigned long mmc_bread(int dev_num, unsigned long blknr, lbaint_t blkcnt,
+ void *dst)
+{
+ omap_mmc_read_sect(blknr, (blkcnt * MMCSD_SECTOR_SIZE), &cur_card_data,
+ (unsigned long *) dst);
+ return 1;
+}
+
+int mmc_init(int verbose)
+{
+ if (configure_mmc(&cur_card_data) != 1)
+ return 1;
+
+ mmc_blk_dev.if_type = IF_TYPE_MMC;
+ mmc_blk_dev.part_type = PART_TYPE_DOS;
+ mmc_blk_dev.dev = 0;
+ mmc_blk_dev.lun = 0;
+ mmc_blk_dev.type = 0;
+
+ /* FIXME fill in the correct size (is set to 32MByte) */
+ mmc_blk_dev.blksz = MMCSD_SECTOR_SIZE;
+ mmc_blk_dev.lba = 0x10000;
+ mmc_blk_dev.removable = 0;
+ mmc_blk_dev.block_read = mmc_bread;
+
+ fat_register_device(&mmc_blk_dev, 1);
+ return 0;
+}
+
+int mmc_read(ulong src, uchar *dst, int size)
+{
+ return 0;
+}
+
+int mmc_write(uchar *src, ulong dst, int size)
+{
+ return 0;
+}
+
+int mmc2info(ulong addr)
+{
+ return 0;
+}