ARM: OMAP3: Add MMC support

Index: u-boot_master/include/asm-arm/arch-omap3/mmc.h
===================================================================
@@ -0,0 +1,235 @@
+/*
+ * (C) Copyright 2008
+ * Texas Instruments, <www.ti.com>
+ * Syed Mohammed Khasim <[email protected]>
+ *
+ * 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 "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;
+
+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 */

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