diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/omap3_mmc.c | 13 | ||||
| -rw-r--r-- | drivers/mmc/omap3_mmc.h | 242 |
2 files changed, 251 insertions, 4 deletions
diff --git a/drivers/mmc/omap3_mmc.c b/drivers/mmc/omap3_mmc.c index 25b66f2..4eda216 100644 --- a/drivers/mmc/omap3_mmc.c +++ b/drivers/mmc/omap3_mmc.c @@ -30,7 +30,8 @@ #include <i2c.h> #include <twl4030.h> #include <asm/io.h> -#include <asm/arch/mmc.h> + +#include "omap3_mmc.h" const unsigned short mmc_transspeed_val[15][4] = { {CLKD(10, 1), CLKD(10, 10), CLKD(10, 100), CLKD(10, 1000)}, @@ -81,13 +82,14 @@ block_dev_desc_t *mmc_get_dev(int dev) unsigned char mmc_board_init(void) { - t2_t *t2_base = (t2_t *)T2_BASE; - struct prcm *prcm_base = (struct prcm *)PRCM_BASE; - #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); @@ -105,6 +107,9 @@ unsigned char mmc_board_init(void) writel(readl(&prcm_base->iclken1_core) | EN_MMC1 | EN_MMC2 | EN_MMC3, &prcm_base->iclken1_core); +#endif + +/* TODO add appropriate OMAP4 init */ return 1; } diff --git a/drivers/mmc/omap3_mmc.h b/drivers/mmc/omap3_mmc.h new file mode 100644 index 0000000..cbb3dc3 --- /dev/null +++ b/drivers/mmc/omap3_mmc.h @@ -0,0 +1,242 @@ +/* + * (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 + */ + +#ifndef MMC_H +#define MMC_H + +#include <asm/arch/mmc_host_def.h> + +/* Responses */ +#define RSP_TYPE_NONE (RSP_TYPE_NORSP | CCCE_NOCHECK | CICE_NOCHECK) +#define RSP_TYPE_R1 (RSP_TYPE_LGHT48 | CCCE_CHECK | CICE_CHECK) +#define RSP_TYPE_R1B (RSP_TYPE_LGHT48B | CCCE_CHECK | CICE_CHECK) +#define RSP_TYPE_R2 (RSP_TYPE_LGHT136 | CCCE_CHECK | CICE_NOCHECK) +#define RSP_TYPE_R3 (RSP_TYPE_LGHT48 | CCCE_NOCHECK | CICE_NOCHECK) +#define RSP_TYPE_R4 (RSP_TYPE_LGHT48 | CCCE_NOCHECK | CICE_NOCHECK) +#define RSP_TYPE_R5 (RSP_TYPE_LGHT48 | CCCE_CHECK | CICE_CHECK) +#define RSP_TYPE_R6 (RSP_TYPE_LGHT48 | CCCE_CHECK | CICE_CHECK) +#define RSP_TYPE_R7 (RSP_TYPE_LGHT48 | CCCE_CHECK | CICE_CHECK) + +/* All supported commands */ +#define MMC_CMD0 (INDEX(0) | RSP_TYPE_NONE | DP_NO_DATA | DDIR_WRITE) +#define MMC_CMD1 (INDEX(1) | RSP_TYPE_R3 | DP_NO_DATA | DDIR_WRITE) +#define MMC_CMD2 (INDEX(2) | RSP_TYPE_R2 | DP_NO_DATA | DDIR_WRITE) +#define MMC_CMD3 (INDEX(3) | RSP_TYPE_R1 | DP_NO_DATA | DDIR_WRITE) +#define MMC_SDCMD3 (INDEX(3) | RSP_TYPE_R6 | DP_NO_DATA | DDIR_WRITE) +#define MMC_CMD4 (INDEX(4) | RSP_TYPE_NONE | DP_NO_DATA | DDIR_WRITE) +#define MMC_CMD6 (INDEX(6) | RSP_TYPE_R1B | DP_NO_DATA | DDIR_WRITE) +#define MMC_CMD7_SELECT (INDEX(7) | RSP_TYPE_R1B | DP_NO_DATA | DDIR_WRITE) +#define MMC_CMD7_DESELECT (INDEX(7)| RSP_TYPE_NONE | DP_NO_DATA | DDIR_WRITE) +#define MMC_CMD8 (INDEX(8) | RSP_TYPE_R1 | DP_DATA | DDIR_READ) +#define MMC_SDCMD8 (INDEX(8) | RSP_TYPE_R7 | DP_NO_DATA | DDIR_WRITE) +#define MMC_CMD9 (INDEX(9) | RSP_TYPE_R2 | DP_NO_DATA | DDIR_WRITE) +#define MMC_CMD12 (INDEX(12) | RSP_TYPE_R1B | DP_NO_DATA | DDIR_WRITE) +#define MMC_CMD13 (INDEX(13) | RSP_TYPE_R1 | DP_NO_DATA | DDIR_WRITE) +#define MMC_CMD15 (INDEX(15) | RSP_TYPE_NONE | DP_NO_DATA | DDIR_WRITE) +#define MMC_CMD16 (INDEX(16) | RSP_TYPE_R1 | DP_NO_DATA | DDIR_WRITE) +#define MMC_CMD17 (INDEX(17) | RSP_TYPE_R1 | DP_DATA | DDIR_READ) +#define MMC_CMD24 (INDEX(24) | RSP_TYPE_R1 | DP_DATA | DDIR_WRITE) +#define MMC_ACMD6 (INDEX(6) | RSP_TYPE_R1 | DP_NO_DATA | DDIR_WRITE) +#define MMC_ACMD41 (INDEX(41) | RSP_TYPE_R3 | DP_NO_DATA | DDIR_WRITE) +#define MMC_ACMD51 (INDEX(51) | RSP_TYPE_R1 | DP_DATA | DDIR_READ) +#define MMC_CMD55 (INDEX(55) | RSP_TYPE_R1 | DP_NO_DATA | DDIR_WRITE) + +#define MMC_AC_CMD_RCA_MASK (unsigned int)(0xFFFF << 16) +#define MMC_BC_CMD_DSR_MASK (unsigned int)(0xFFFF << 16) +#define MMC_DSR_DEFAULT 0x0404 +#define SD_CMD8_CHECK_PATTERN 0xAA +#define SD_CMD8_2_7_3_6_V_RANGE (0x01 << 8) + +/* Clock Configurations and Macros */ + +#define MMC_CLOCK_REFERENCE 96 +#define MMC_RELATIVE_CARD_ADDRESS 0x1234 +#define MMC_INIT_SEQ_CLK (MMC_CLOCK_REFERENCE * 1000 / 80) +#define MMC_400kHz_CLK (MMC_CLOCK_REFERENCE * 1000 / 400) +#define CLKDR(r, f, u) ((((r)*100) / ((f)*(u))) + 1) +#define CLKD(f, u) (CLKDR(MMC_CLOCK_REFERENCE, f, u)) + +#define MMC_OCR_REG_ACCESS_MODE_MASK (0x3 << 29) +#define MMC_OCR_REG_ACCESS_MODE_BYTE (0x0 << 29) +#define MMC_OCR_REG_ACCESS_MODE_SECTOR (0x2 << 29) + +#define MMC_OCR_REG_HOST_CAPACITY_SUPPORT_MASK (0x1 << 30) +#define MMC_OCR_REG_HOST_CAPACITY_SUPPORT_BYTE (0x0 << 30) +#define MMC_OCR_REG_HOST_CAPACITY_SUPPORT_SECTOR (0x1 << 30) + +#define MMC_SD2_CSD_C_SIZE_LSB_MASK 0xFFFF +#define MMC_SD2_CSD_C_SIZE_MSB_MASK 0x003F +#define MMC_SD2_CSD_C_SIZE_MSB_OFFSET 16 +#define MMC_CSD_C_SIZE_LSB_MASK 0x0003 +#define MMC_CSD_C_SIZE_MSB_MASK 0x03FF +#define MMC_CSD_C_SIZE_MSB_OFFSET 2 + +#define MMC_CSD_TRAN_SPEED_UNIT_MASK (0x07 << 0) +#define MMC_CSD_TRAN_SPEED_FACTOR_MASK (0x0F << 3) +#define MMC_CSD_TRAN_SPEED_UNIT_100MHZ (0x3 << 0) +#define MMC_CSD_TRAN_SPEED_FACTOR_1_0 (0x01 << 3) +#define MMC_CSD_TRAN_SPEED_FACTOR_8_0 (0x0F << 3) + +typedef struct { + unsigned not_used:1; + unsigned crc:7; + unsigned ecc:2; + unsigned file_format:2; + unsigned tmp_write_protect:1; + unsigned perm_write_protect:1; + unsigned copy:1; + unsigned file_format_grp:1; + unsigned content_prot_app:1; + unsigned reserved_1:4; + unsigned write_bl_partial:1; + unsigned write_bl_len:4; + unsigned r2w_factor:3; + unsigned default_ecc:2; + unsigned wp_grp_enable:1; + unsigned wp_grp_size:5; + unsigned erase_grp_mult:5; + unsigned erase_grp_size:5; + unsigned c_size_mult:3; + unsigned vdd_w_curr_max:3; + unsigned vdd_w_curr_min:3; + unsigned vdd_r_curr_max:3; + unsigned vdd_r_curr_min:3; + unsigned c_size_lsb:2; + unsigned c_size_msb:10; + unsigned reserved_2:2; + unsigned dsr_imp:1; + unsigned read_blk_misalign:1; + unsigned write_blk_misalign:1; + unsigned read_bl_partial:1; + unsigned read_bl_len:4; + unsigned ccc:12; + unsigned tran_speed:8; + unsigned nsac:8; + unsigned taac:8; + unsigned reserved_3:2; + unsigned spec_vers:4; + unsigned csd_structure:2; +} mmc_csd_reg_t; + +/* csd for sd2.0 */ +typedef struct { + unsigned not_used:1; + unsigned crc:7; + unsigned reserved_1:2; + unsigned file_format:2; + unsigned tmp_write_protect:1; + unsigned perm_write_protect:1; + unsigned copy:1; + unsigned file_format_grp:1; + unsigned reserved_2:5; + unsigned write_bl_partial:1; + unsigned write_bl_len:4; + unsigned r2w_factor:3; + unsigned reserved_3:2; + unsigned wp_grp_enable:1; + unsigned wp_grp_size:7; + unsigned sector_size:7; + unsigned erase_blk_len:1; + unsigned reserved_4:1; + unsigned c_size_lsb:16; + unsigned c_size_msb:6; + unsigned reserved_5:6; + unsigned dsr_imp:1; + unsigned read_blk_misalign:1; + unsigned write_blk_misalign:1; + unsigned read_bl_partial:1; + unsigned read_bl_len:4; + unsigned ccc:12; + unsigned tran_speed:8; + unsigned nsac:8; + unsigned taac:8; + unsigned reserved_6:6; + unsigned csd_structure:2; +} mmc_sd2_csd_reg_t; + +/* extended csd - 512 bytes long */ +typedef struct { + unsigned char reserved_1[181]; + unsigned char erasedmemorycontent; + unsigned char reserved_2; + unsigned char buswidthmode; + unsigned char reserved_3; + unsigned char highspeedinterfacetiming; + unsigned char reserved_4; + unsigned char powerclass; + unsigned char reserved_5; + unsigned char commandsetrevision; + unsigned char reserved_6; + unsigned char commandset; + unsigned char extendedcsdrevision; + unsigned char reserved_7; + unsigned char csdstructureversion; + unsigned char reserved_8; + unsigned char cardtype; + unsigned char reserved_9[3]; + unsigned char powerclass_52mhz_1_95v; + unsigned char powerclass_26mhz_1_95v; + unsigned char powerclass_52mhz_3_6v; + unsigned char powerclass_26mhz_3_6v; + unsigned char reserved_10; + unsigned char minreadperf_4b_26mhz; + unsigned char minwriteperf_4b_26mhz; + unsigned char minreadperf_8b_26mhz_4b_52mhz; + unsigned char minwriteperf_8b_26mhz_4b_52mhz; + unsigned char minreadperf_8b_52mhz; + unsigned char minwriteperf_8b_52mhz; + unsigned char reserved_11; + unsigned int sectorcount; + unsigned char reserved_12[288]; + unsigned char supportedcommandsets; + unsigned char reserved_13[7]; +} mmc_extended_csd_reg_t; + +/* mmc sd responce */ +typedef struct { + unsigned int ocr; +} mmc_resp_r3; + +typedef struct { + unsigned short cardstatus; + unsigned short newpublishedrca; +} mmc_resp_r6; + +typedef union { + unsigned int resp[4]; + mmc_resp_r3 r3; + mmc_resp_r6 r6; + mmc_csd_reg_t Card_CSD; +} mmc_resp_t; + +extern mmc_card_data mmc_dev; + +unsigned char mmc_lowlevel_init(void); +unsigned char mmc_send_command(unsigned int cmd, unsigned int arg, + unsigned int *response); +unsigned char mmc_setup_clock(unsigned int iclk, unsigned short clkd); +unsigned char mmc_set_opendrain(unsigned char state); +unsigned char mmc_read_data(unsigned int *output_buf); + +#endif /* MMC_H */ |