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 = (u8)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, (u16)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 char configure_mmc(mmc_card_data *mmc_card_cur, mmc_controller_data *mmc_cont_cur) { unsigned char ret_val; unsigned int argument; unsigned int resp[4]; unsigned int trans_fact, trans_unit, retries = 2; unsigned int max_dtr; int dsor; mmc_csd_reg_t Card_CSD; unsigned char trans_speed; ret_val = mmc_init_setup(mmc_cont_cur); if (ret_val != 1) return ret_val; do { ret_val = mmc_detect_card(mmc_card_cur, mmc_cont_cur); retries--; } while ((retries > 0) && (ret_val != 1)); argument = mmc_card_cur->RCA << 16; ret_val = mmc_send_cmd(mmc_cont_cur->base, 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_cont_cur->base, 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; max_dtr = tran_exp[trans_unit] * tran_mant[trans_fact]; if (OMAP_HSMMC2_BASE == mmc_cont_cur->base) { max_dtr = tran_exp[trans_unit] * trans_speed; //&*&*&*SJ_20110502 } dsor = OMAP_MMC_MASTER_CLOCK / max_dtr; /* Following lines commented to build in x-loader; otherwise its including * division library and creating a linking error. if (OMAP_MMC_MASTER_CLOCK / dsor > max_dtr) dsor++; */ if (dsor == 4) dsor = 5; else if (dsor == 3) dsor = 4; //&*&*&*SJ1_20110502 else if (dsor == 2) ; else if (dsor == 1) dsor = 2; //&*&*&*SJ2_20110502 else return 1; ret_val = mmc_clock_config(mmc_cont_cur, CLK_MISC, dsor); if (ret_val != 1) return ret_val; argument = mmc_card_cur->RCA << 16; ret_val = mmc_send_cmd(mmc_cont_cur->base, 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_cont_cur->base, MMC_CMD16, argument, resp); if (ret_val != 1) return ret_val; /* get the card size in sectors */ ret_val = mmc_read_cardsize(mmc_cont_cur->base, mmc_card_cur, &Card_CSD); if (ret_val != 1) return ret_val; return 1; }
unsigned char configure_mmc(mmc_card_data *mmc_card_cur, mmc_controller_data *mmc_cont_cur) { unsigned char ret_val; unsigned int argument; unsigned int resp[4]; unsigned int trans_fact, trans_unit, retries = 2; unsigned int max_dtr; int dsor; mmc_csd_reg_t Card_CSD; unsigned char trans_speed; ret_val = mmc_init_setup(mmc_cont_cur); if (ret_val != 1) return ret_val; do { ret_val = mmc_detect_card(mmc_card_cur, mmc_cont_cur); retries--; } while ((retries > 0) && (ret_val != 1)); argument = mmc_card_cur->RCA << 16; ret_val = mmc_send_cmd(mmc_cont_cur->base, 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_cont_cur->base, 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; max_dtr = tran_exp[trans_unit] * tran_mant[trans_fact]; dsor = OMAP_MMC_MASTER_CLOCK / max_dtr; if (OMAP_MMC_MASTER_CLOCK / dsor > max_dtr) dsor++; ret_val = mmc_clock_config(mmc_cont_cur, CLK_MISC, dsor); if (ret_val != 1) return ret_val; argument = mmc_card_cur->RCA << 16; ret_val = mmc_send_cmd(mmc_cont_cur->base, MMC_CMD7_SELECT, argument, resp); if (ret_val != 1) return ret_val; if (mmc_cont_cur->slot == 1) { /* Switch eMMC on OMAP4 to HS timing */ argument = (MMC_SWITCH_MODE_WRITE_BYTE << 24) | (EXT_CSD_HS_TIMING << 16) | (1 << 8) | EXT_CSD_CMD_SET_NORMAL; ret_val = mmc_send_cmd(mmc_cont_cur->base, MMC_CMD6, argument, resp); if (ret_val != 1) return ret_val; /* Switch the clock to 48MHz */ ret_val = mmc_clock_config(mmc_cont_cur, CLK_MISC, 2); if (ret_val != 1) return ret_val; } /* Configure the block length to 512 bytes */ argument = MMCSD_SECTOR_SIZE; ret_val = mmc_send_cmd(mmc_cont_cur->base, MMC_CMD16, argument, resp); if (ret_val != 1) return ret_val; /* get the card size in sectors */ ret_val = mmc_read_cardsize(mmc_cont_cur->base, mmc_card_cur, &Card_CSD); if (ret_val != 1) return ret_val; if (mmc_cont_cur->slot == 1) { /* Switch the eMMC on OMAP4 to 8-bit mode */ argument = (MMC_SWITCH_MODE_WRITE_BYTE << 24) | (EXT_CSD_BUS_WIDTH << 16) | (EXT_CSD_BUS_WIDTH_8 << 8) | EXT_CSD_CMD_SET_NORMAL; ret_val = mmc_send_cmd(mmc_cont_cur->base, MMC_CMD6, argument, resp); if (ret_val != 1) return ret_val; OMAP_HSMMC_CON(mmc_cont_cur->base) |= (1 << 5); } return 1; }
unsigned char configure_mmc(mmc_card_data *mmc_card_cur, mmc_controller_data *mmc_cont_cur) { unsigned char ret_val; unsigned int argument; unsigned int resp[4]; unsigned int trans_fact, trans_unit, retries = 2; unsigned int max_dtr; int dsor; mmc_csd_reg_t Card_CSD; unsigned char trans_speed; ret_val = mmc_init_setup(mmc_cont_cur); if (ret_val != 1) return ret_val; do { ret_val = mmc_detect_card(mmc_card_cur, mmc_cont_cur); retries--; } while ((retries > 0) && (ret_val != 1)); argument = mmc_card_cur->RCA << 16; ret_val = mmc_send_cmd(mmc_cont_cur->base, 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_cont_cur->base, 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; max_dtr = tran_exp[trans_unit] * tran_mant[trans_fact]; dsor = OMAP_MMC_MASTER_CLOCK / max_dtr; if (dsor == 4) dsor = 5; if (dsor == 3) dsor = 4; ret_val = mmc_clock_config(mmc_cont_cur, CLK_MISC, dsor); if (ret_val != 1) return ret_val; argument = mmc_card_cur->RCA << 16; ret_val = mmc_send_cmd(mmc_cont_cur->base, 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_cont_cur->base, MMC_CMD16, argument, resp); if (ret_val != 1) return ret_val; /* get the card size in sectors */ ret_val = mmc_read_cardsize(mmc_cont_cur->base, mmc_card_cur, &Card_CSD); if (ret_val != 1) return ret_val; return 1; }