diff options
Diffstat (limited to 'drivers/mmc/omap3_mmc.c')
| -rw-r--r-- | drivers/mmc/omap3_mmc.c | 570 |
1 files changed, 0 insertions, 570 deletions
diff --git a/drivers/mmc/omap3_mmc.c b/drivers/mmc/omap3_mmc.c deleted file mode 100644 index 15d41e5..0000000 --- a/drivers/mmc/omap3_mmc.c +++ /dev/null @@ -1,570 +0,0 @@ -/* - * (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> -#include <twl4030.h> -#include <asm/io.h> - -#include "omap3_mmc.h" - -static 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)} -}; - -static mmc_card_data cur_card_data; -static block_dev_desc_t mmc_blk_dev; -static hsmmc_t *mmc_base = (hsmmc_t *)OMAP_HSMMC1_BASE; - -int mmc_set_dev(int dev_num) -{ - switch (dev_num) { - case 1: - mmc_base = (hsmmc_t *)OMAP_HSMMC1_BASE; - break; - case 2: - mmc_base = (hsmmc_t *)OMAP_HSMMC2_BASE; - break; - case 3: - mmc_base = (hsmmc_t *)OMAP_HSMMC3_BASE; - break; - default: - mmc_base = (hsmmc_t *)OMAP_HSMMC1_BASE; - return 1; - } - - return 0; -} - -block_dev_desc_t *mmc_get_dev(int dev) -{ - return (block_dev_desc_t *) &mmc_blk_dev; -} - -static unsigned char mmc_board_init(void) -{ -#if defined(CONFIG_TWL4030_POWER) - twl4030_power_mmc_init(); -#endif - -#if defined(CONFIG_OMAP34XX) - t2_t *t2_base = (t2_t *)T2_BASE; - struct prcm *prcm_base = (struct prcm *)PRCM_BASE; - - writel(readl(&t2_base->pbias_lite) | PBIASLITEPWRDNZ1 | - PBIASSPEEDCTRL0 | PBIASLITEPWRDNZ0, - &t2_base->pbias_lite); - - writel(readl(&t2_base->devconf0) | MMCSDIO1ADPCLKISEL, - &t2_base->devconf0); - - writel(readl(&t2_base->devconf1) | MMCSDIO2ADPCLKISEL, - &t2_base->devconf1); - - writel(readl(&prcm_base->fclken1_core) | - EN_MMC1 | EN_MMC2 | EN_MMC3, - &prcm_base->fclken1_core); - - writel(readl(&prcm_base->iclken1_core) | - EN_MMC1 | EN_MMC2 | EN_MMC3, - &prcm_base->iclken1_core); -#endif - -/* TODO add appropriate OMAP4 init */ - - return 1; -} - -static void mmc_init_stream(void) -{ - writel(readl(&mmc_base->con) | INIT_INITSTREAM, &mmc_base->con); - - writel(MMC_CMD0, &mmc_base->cmd); - while (!(readl(&mmc_base->stat) & CC_MASK)); - - writel(CC_MASK, &mmc_base->stat); - - writel(MMC_CMD0, &mmc_base->cmd); - while (!(readl(&mmc_base->stat) & CC_MASK)); - - writel(readl(&mmc_base->con) & ~INIT_INITSTREAM, &mmc_base->con); -} - -static unsigned char mmc_clock_config(unsigned int iclk, unsigned short clk_div) -{ - unsigned int val; - - mmc_reg_out(&mmc_base->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(&mmc_base->sysctl, ICE_MASK | CLKD_MASK, - (val << CLKD_OFFSET) | ICE_OSCILLATE); - - while ((readl(&mmc_base->sysctl) & ICS_MASK) == ICS_NOTREADY); - - writel(readl(&mmc_base->sysctl) | CEN_ENABLE, &mmc_base->sysctl); - return 1; -} - -static unsigned char mmc_init_setup(void) -{ - unsigned int reg_val; - - mmc_board_init(); - - writel(readl(&mmc_base->sysconfig) | MMC_SOFTRESET, - &mmc_base->sysconfig); - while ((readl(&mmc_base->sysstatus) & RESETDONE) == 0); - - writel(readl(&mmc_base->sysctl) | SOFTRESETALL, &mmc_base->sysctl); - while ((readl(&mmc_base->sysctl) & SOFTRESETALL) != 0x0); - - writel(DTW_1_BITMODE | SDBP_PWROFF | SDVS_3V0, &mmc_base->hctl); - writel(readl(&mmc_base->capa) | VS30_3V0SUP | VS18_1V8SUP, - &mmc_base->capa); - - reg_val = readl(&mmc_base->con) & RESERVED_MASK; - - writel(CTPL_MMC_SD | reg_val | WPP_ACTIVEHIGH | CDP_ACTIVEHIGH | - MIT_CTO | DW8_1_4BITMODE | MODE_FUNC | STR_BLOCK | - HR_NOHOSTRESP | INIT_NOINIT | NOOPENDRAIN, &mmc_base->con); - - mmc_clock_config(CLK_INITSEQ, 0); - writel(readl(&mmc_base->hctl) | SDBP_PWRON, &mmc_base->hctl); - - writel(IE_BADA | IE_CERR | IE_DEB | IE_DCRC | IE_DTO | IE_CIE | - IE_CEB | IE_CCRC | IE_CTO | IE_BRR | IE_BWR | IE_TC | IE_CC, - &mmc_base->ie); - - mmc_init_stream(); - return 1; -} - -static unsigned char mmc_send_cmd(unsigned int cmd, unsigned int arg, - unsigned int *response) -{ - unsigned int mmc_stat; - - while ((readl(&mmc_base->pstate) & DATI_MASK) == DATI_CMDDIS); - - writel(BLEN_512BYTESLEN | NBLK_STPCNT, &mmc_base->blk); - writel(0xFFFFFFFF, &mmc_base->stat); - writel(arg, &mmc_base->arg); - writel(cmd | CMD_TYPE_NORMAL | CICE_NOCHECK | CCCE_NOCHECK | - MSBS_SGLEBLK | ACEN_DISABLE | BCE_DISABLE | DE_DISABLE, - &mmc_base->cmd); - - while (1) { - do { - mmc_stat = readl(&mmc_base->stat); - } while (mmc_stat == 0); - - if ((mmc_stat & ERRI_MASK) != 0) - return (unsigned char) mmc_stat; - - if (mmc_stat & CC_MASK) { - writel(CC_MASK, &mmc_base->stat); - response[0] = readl(&mmc_base->rsp10); - if ((cmd & RSP_TYPE_MASK) == RSP_TYPE_LGHT136) { - response[1] = readl(&mmc_base->rsp32); - response[2] = readl(&mmc_base->rsp54); - response[3] = readl(&mmc_base->rsp76); - } - break; - } - } - return 1; -} - -static unsigned char mmc_read_data(unsigned int *output_buf) -{ - unsigned int mmc_stat; - unsigned int read_count = 0; - - /* - * Start Polled Read - */ - while (1) { - do { - mmc_stat = readl(&mmc_base->stat); - } while (mmc_stat == 0); - - if ((mmc_stat & ERRI_MASK) != 0) - return (unsigned char) mmc_stat; - - if (mmc_stat & BRR_MASK) { - unsigned int k; - - writel(readl(&mmc_base->stat) | BRR_MASK, - &mmc_base->stat); - for (k = 0; k < MMCSD_SECTOR_SIZE / 4; k++) { - *output_buf = readl(&mmc_base->data); - output_buf++; - read_count += 4; - } - } - - if (mmc_stat & BWR_MASK) - writel(readl(&mmc_base->stat) | BWR_MASK, - &mmc_base->stat); - - if (mmc_stat & TC_MASK) { - writel(readl(&mmc_base->stat) | TC_MASK, - &mmc_base->stat); - break; - } - } - return 1; -} - -static 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 short retry_cnt = 2000; - mmc_resp_t mmc_resp; - - /* 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, mmc_resp.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, mmc_resp.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, mmc_resp.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; - writel(readl(&mmc_base->con) & ~OD, &mmc_base->con); - writel(readl(&mmc_base->con) | OPENDRAIN, &mmc_base->con); - } - - argument = ocr_value; - err = mmc_send_cmd(ret_cmd41, argument, mmc_resp.resp); - if (err != 1) - return err; - - ocr_recvd = mmc_resp.r3.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, mmc_resp.resp); - } - - argument = ocr_value; - err = mmc_send_cmd(ret_cmd41, argument, mmc_resp.resp); - if (err != 1) - return err; - ocr_recvd = mmc_resp.r3.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, mmc_resp.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, mmc_resp.resp); - if (err != 1) - return err; - } else { - argument = 0x00000000; - err = mmc_send_cmd(MMC_SDCMD3, argument, mmc_resp.resp); - if (err != 1) - return err; - - mmc_card_cur->RCA = mmc_resp.r6.newpublishedrca; - } - - writel(readl(&mmc_base->con) & ~OD, &mmc_base->con); - writel(readl(&mmc_base->con) | NOOPENDRAIN, &mmc_base->con); - return 1; -} - -static 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; -} - -static unsigned long mmc_bread(int dev_num, unsigned long blknr, - lbaint_t blkcnt, void *dst) -{ - unsigned char err; - unsigned int argument; - unsigned int resp[4]; - unsigned int *output_buf = dst; - unsigned int sec_inc_val; - lbaint_t i; - - if (blkcnt == 0) - return 0; - - if (cur_card_data.mode == SECTOR_MODE) { - argument = blknr; - sec_inc_val = 1; - } else { - argument = blknr * MMCSD_SECTOR_SIZE; - sec_inc_val = MMCSD_SECTOR_SIZE; - } - - for (i = 0; i < blkcnt; i++) { - err = mmc_send_cmd(MMC_CMD17, argument, resp); - if (err != 1) { - printf("mmc: CMD17 failed, status = %08x\n", err); - break; - } - - err = mmc_read_data(output_buf); - if (err != 1) { - printf("mmc: read failed, status = %08x\n", err); - break; - } - - output_buf += (MMCSD_SECTOR_SIZE / 4); - argument += sec_inc_val; - } - - return i; -} - -static unsigned char configure_mmc(mmc_card_data *mmc_card_cur) -{ - unsigned char ret_val; - unsigned int argument; - unsigned int trans_clk, trans_fact, trans_unit, retries = 2; - unsigned char trans_speed; - mmc_resp_t mmc_resp; - - 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, mmc_resp.resp); - if (ret_val != 1) - return ret_val; - - if (mmc_card_cur->card_type == MMC_CARD) - mmc_card_cur->version = mmc_resp.Card_CSD.spec_vers; - - trans_speed = mmc_resp.Card_CSD.tran_speed; - - ret_val = mmc_send_cmd(MMC_CMD4, MMC_DSR_DEFAULT << 16, mmc_resp.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, mmc_resp.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, mmc_resp.resp); - if (ret_val != 1) - return ret_val; - - /* get the card size in sectors */ - ret_val = mmc_read_cardsize(mmc_card_cur, &mmc_resp.Card_CSD); - if (ret_val != 1) - return ret_val; - - return 1; -} - -int mmc_legacy_init(int dev) -{ - if (mmc_set_dev(dev) != 0) - return 1; - - 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; -} |