blob: b739f26f78cc79da353f61dc5d78eb436ceb90f8 [file] [log] [blame]
/* Driver for Realtek RTS51xx USB card reader
*
* Copyright(c) 2009 Realtek Semiconductor Corp. All rights reserved.
*
* 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; either version 2, or (at your option) any
* later version.
*
* 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, see <http://www.gnu.org/licenses/>.
*
* Author:
* wwang (wei_wang@realsil.com.cn)
* No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China
* Maintainer:
* Edwin Rong (edwin_rong@realsil.com.cn)
* No. 450, Shenhu Road, Suzhou Industry Park, Suzhou, China
*/
#include <linux/blkdev.h>
#include <linux/kthread.h>
#include <linux/sched.h>
#include "debug.h"
#include "trace.h"
#include "rts51x.h"
#include "rts51x_transport.h"
#include "rts51x_scsi.h"
#include "rts51x_card.h"
#include "sd.h"
static inline void sd_set_reset_fail(struct rts51x_chip *chip, u8 err_code)
{
struct sd_info *sd_card = &(chip->sd_card);
sd_card->sd_reset_fail |= err_code;
}
static inline void sd_clear_reset_fail(struct rts51x_chip *chip)
{
struct sd_info *sd_card = &(chip->sd_card);
sd_card->sd_reset_fail = 0;
}
static inline int sd_check_reset_fail(struct rts51x_chip *chip, u8 err_code)
{
struct sd_info *sd_card = &(chip->sd_card);
return sd_card->sd_reset_fail & err_code;
}
static inline void sd_set_err_code(struct rts51x_chip *chip, u8 err_code)
{
struct sd_info *sd_card = &(chip->sd_card);
sd_card->err_code |= err_code;
}
static inline void sd_clr_err_code(struct rts51x_chip *chip)
{
struct sd_info *sd_card = &(chip->sd_card);
sd_card->err_code = 0;
}
static inline int sd_check_err_code(struct rts51x_chip *chip, u8 err_code)
{
struct sd_info *sd_card = &(chip->sd_card);
return sd_card->err_code & err_code;
}
static int sd_parse_err_code(struct rts51x_chip *chip)
{
TRACE_RET(chip, STATUS_FAIL);
}
int sd_check_data0_status(struct rts51x_chip *chip)
{
int retval;
u8 stat;
retval = rts51x_ep0_read_register(chip, SD_BUS_STAT, &stat);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
if (!(stat & SD_DAT0_STATUS)) {
sd_set_err_code(chip, SD_BUSY);
TRACE_RET(chip, STATUS_FAIL);
}
return STATUS_SUCCESS;
}
static int sd_send_cmd_get_rsp(struct rts51x_chip *chip, u8 cmd_idx,
u32 arg, u8 rsp_type, u8 *rsp, int rsp_len)
{
struct sd_info *sd_card = &(chip->sd_card);
int retval;
int timeout = 50;
u16 reg_addr;
u8 buf[17], stat;
int len = 2;
int rty_cnt = 0;
sd_clr_err_code(chip);
RTS51X_DEBUGP("SD/MMC CMD %d, arg = 0x%08x\n", cmd_idx, arg);
if (rsp_type == SD_RSP_TYPE_R1b)
timeout = 3000;
RTY_SEND_CMD:
rts51x_init_cmd(chip);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_CMD0, 0xFF, 0x40 | cmd_idx);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_CMD1, 0xFF, (u8) (arg >> 24));
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_CMD2, 0xFF, (u8) (arg >> 16));
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_CMD3, 0xFF, (u8) (arg >> 8));
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_CMD4, 0xFF, (u8) arg);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_CFG2, 0xFF, rsp_type);
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_DATA_SOURCE, 0x01,
PINGPONG_BUFFER);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_TRANSFER, 0xFF,
SD_TM_CMD_RSP | SD_TRANSFER_START);
rts51x_add_cmd(chip, CHECK_REG_CMD, SD_TRANSFER,
SD_TRANSFER_END | SD_STAT_IDLE,
SD_TRANSFER_END | SD_STAT_IDLE);
rts51x_add_cmd(chip, READ_REG_CMD, SD_STAT1, 0, 0);
if (CHECK_USB(chip, USB_20)) {
if (rsp_type == SD_RSP_TYPE_R2) {
/* Read data from ping-pong buffer */
for (reg_addr = PPBUF_BASE2;
reg_addr < PPBUF_BASE2 + 16; reg_addr++) {
rts51x_add_cmd(chip, READ_REG_CMD, reg_addr, 0,
0);
}
len = 18;
} else if (rsp_type != SD_RSP_TYPE_R0) {
/* Read data from SD_CMDx registers */
for (reg_addr = SD_CMD0; reg_addr <= SD_CMD4;
reg_addr++) {
rts51x_add_cmd(chip, READ_REG_CMD, reg_addr, 0,
0);
}
len = 7;
} else {
len = 2;
}
} else {
len = 2;
}
retval = rts51x_send_cmd(chip, MODE_CR, 100);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
retval = rts51x_get_rsp(chip, len, timeout);
if (CHECK_SD_TRANS_FAIL(chip, retval)) {
u8 val;
rts51x_ep0_read_register(chip, SD_STAT1, &val);
RTS51X_DEBUGP("SD_STAT1: 0x%x\n", val);
rts51x_ep0_read_register(chip, SD_STAT2, &val);
RTS51X_DEBUGP("SD_STAT2: 0x%x\n", val);
if (val & SD_RSP_80CLK_TIMEOUT)
sd_set_err_code(chip, SD_RSP_TIMEOUT);
rts51x_ep0_read_register(chip, SD_BUS_STAT, &val);
RTS51X_DEBUGP("SD_BUS_STAT: 0x%x\n", val);
if (retval == STATUS_TIMEDOUT) {
if (rsp_type & SD_WAIT_BUSY_END) {
retval = sd_check_data0_status(chip);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
} else {
sd_set_err_code(chip, SD_TO_ERR);
}
}
rts51x_clear_sd_error(chip);
TRACE_RET(chip, STATUS_FAIL);
}
if (rsp_type == SD_RSP_TYPE_R0)
return STATUS_SUCCESS;
if (CHECK_USB(chip, USB_20)) {
rts51x_read_rsp_buf(chip, 2, buf, len - 2);
} else {
if (rsp_type == SD_RSP_TYPE_R2) {
reg_addr = PPBUF_BASE2;
len = 16;
} else {
reg_addr = SD_CMD0;
len = 5;
}
retval = rts51x_seq_read_register(chip, reg_addr,
(unsigned short)len, buf);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
}
stat = chip->rsp_buf[1];
/* Check (Start,Transmission) bit of Response */
if ((buf[0] & 0xC0) != 0) {
sd_set_err_code(chip, SD_STS_ERR);
TRACE_RET(chip, STATUS_FAIL);
}
/* Check CRC7 */
if (!(rsp_type & SD_NO_CHECK_CRC7)) {
if (stat & SD_CRC7_ERR) {
if (cmd_idx == WRITE_MULTIPLE_BLOCK) {
sd_set_err_code(chip, SD_CRC_ERR);
TRACE_RET(chip, STATUS_FAIL);
}
if (rty_cnt < SD_MAX_RETRY_COUNT) {
wait_timeout(20);
rty_cnt++;
goto RTY_SEND_CMD;
} else {
sd_set_err_code(chip, SD_CRC_ERR);
TRACE_RET(chip, STATUS_FAIL);
}
}
}
/* Check Status */
if ((rsp_type == SD_RSP_TYPE_R1) || (rsp_type == SD_RSP_TYPE_R1b)) {
if ((cmd_idx != SEND_RELATIVE_ADDR)
&& (cmd_idx != SEND_IF_COND)) {
if (cmd_idx != STOP_TRANSMISSION) {
if (buf[1] & 0x80)
TRACE_RET(chip, STATUS_FAIL);
}
if (buf[1] & 0x7F) {
RTS51X_DEBUGP("buf[1]: 0x%02x\n", buf[1]);
TRACE_RET(chip, STATUS_FAIL);
}
if (buf[2] & 0xFF) {
RTS51X_DEBUGP("buf[2]: 0x%02x\n", buf[2]);
TRACE_RET(chip, STATUS_FAIL);
}
if (buf[3] & 0x80) {
RTS51X_DEBUGP("buf[3]: 0x%02x\n", buf[3]);
TRACE_RET(chip, STATUS_FAIL);
}
if (buf[3] & 0x01) {
/* Get "READY_FOR_DATA" bit */
sd_card->sd_data_buf_ready = 1;
} else {
sd_card->sd_data_buf_ready = 0;
}
}
}
if (rsp && rsp_len)
memcpy(rsp, buf, rsp_len);
return STATUS_SUCCESS;
}
static inline void sd_print_debug_reg(struct rts51x_chip *chip)
{
#ifdef CONFIG_RTS5139_DEBUG
u8 val = 0;
rts51x_ep0_read_register(chip, SD_STAT1, &val);
RTS51X_DEBUGP("SD_STAT1: 0x%x\n", val);
rts51x_ep0_read_register(chip, SD_STAT2, &val);
RTS51X_DEBUGP("SD_STAT2: 0x%x\n", val);
rts51x_ep0_read_register(chip, SD_BUS_STAT, &val);
RTS51X_DEBUGP("SD_BUS_STAT: 0x%x\n", val);
#endif
}
int sd_read_data(struct rts51x_chip *chip, u8 trans_mode, u8 *cmd, int cmd_len,
u16 byte_cnt, u16 blk_cnt, u8 bus_width, u8 *buf, int buf_len,
int timeout)
{
struct sd_info *sd_card = &(chip->sd_card);
int retval;
int i;
sd_clr_err_code(chip);
if (!buf)
buf_len = 0;
if (buf_len > 512)
/* This function can't read data more than one page */
TRACE_RET(chip, STATUS_FAIL);
rts51x_init_cmd(chip);
if (cmd_len) {
RTS51X_DEBUGP("SD/MMC CMD %d\n", cmd[0] - 0x40);
for (i = 0; i < (cmd_len < 6 ? cmd_len : 6); i++) {
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_CMD0 + i, 0xFF,
cmd[i]);
}
}
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_BYTE_CNT_L, 0xFF, (u8) byte_cnt);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_BYTE_CNT_H, 0xFF,
(u8) (byte_cnt >> 8));
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_BLOCK_CNT_L, 0xFF, (u8) blk_cnt);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_BLOCK_CNT_H, 0xFF,
(u8) (blk_cnt >> 8));
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_CFG1, 0x03, bus_width);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_CFG2, 0xFF,
SD_CALCULATE_CRC7 | SD_CHECK_CRC16 | SD_NO_WAIT_BUSY_END
| SD_CHECK_CRC7 | SD_RSP_LEN_6);
if (trans_mode != SD_TM_AUTO_TUNING) {
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_DATA_SOURCE, 0x01,
PINGPONG_BUFFER);
}
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_TRANSFER, 0xFF,
trans_mode | SD_TRANSFER_START);
rts51x_add_cmd(chip, CHECK_REG_CMD, SD_TRANSFER, SD_TRANSFER_END,
SD_TRANSFER_END);
retval = rts51x_send_cmd(chip, MODE_CR, 100);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
retval = rts51x_get_rsp(chip, 1, timeout);
if (CHECK_SD_TRANS_FAIL(chip, retval)) {
sd_print_debug_reg(chip);
if (retval == STATUS_TIMEDOUT) {
sd_send_cmd_get_rsp(chip, SEND_STATUS, sd_card->sd_addr,
SD_RSP_TYPE_R1, NULL, 0);
}
TRACE_RET(chip, STATUS_FAIL);
}
if (buf && buf_len) {
retval = rts51x_read_ppbuf(chip, buf, buf_len);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
}
return STATUS_SUCCESS;
}
static int sd_write_data(struct rts51x_chip *chip, u8 trans_mode,
u8 *cmd, int cmd_len, u16 byte_cnt, u16 blk_cnt,
u8 bus_width, u8 *buf, int buf_len, int timeout)
{
struct sd_info *sd_card = &(chip->sd_card);
int retval;
int i;
sd_clr_err_code(chip);
if (!buf)
buf_len = 0;
/* This function can't write data more than one page */
if (buf_len > 512)
TRACE_RET(chip, STATUS_FAIL);
if (buf && buf_len) {
retval = rts51x_write_ppbuf(chip, buf, buf_len);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
}
rts51x_init_cmd(chip);
if (cmd_len) {
RTS51X_DEBUGP("SD/MMC CMD %d\n", cmd[0] - 0x40);
for (i = 0; i < (cmd_len < 6 ? cmd_len : 6); i++) {
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_CMD0 + i, 0xFF,
cmd[i]);
}
}
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_BYTE_CNT_L, 0xFF, (u8) byte_cnt);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_BYTE_CNT_H, 0xFF,
(u8) (byte_cnt >> 8));
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_BLOCK_CNT_L, 0xFF, (u8) blk_cnt);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_BLOCK_CNT_H, 0xFF,
(u8) (blk_cnt >> 8));
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_CFG1, 0x03, bus_width);
if (cmd_len) {
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_CFG2, 0xFF,
SD_CALCULATE_CRC7 | SD_CHECK_CRC16 |
SD_WAIT_BUSY_END | SD_CHECK_CRC7 | SD_RSP_LEN_6);
} else {
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_CFG2, 0xFF,
SD_CALCULATE_CRC7 | SD_CHECK_CRC16 |
SD_NO_WAIT_BUSY_END | SD_CHECK_CRC7 |
SD_RSP_LEN_6);
}
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_TRANSFER, 0xFF,
trans_mode | SD_TRANSFER_START);
rts51x_add_cmd(chip, CHECK_REG_CMD, SD_TRANSFER, SD_TRANSFER_END,
SD_TRANSFER_END);
retval = rts51x_send_cmd(chip, MODE_CR, 100);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
retval = rts51x_get_rsp(chip, 1, timeout);
if (CHECK_SD_TRANS_FAIL(chip, retval)) {
sd_print_debug_reg(chip);
if (retval == STATUS_TIMEDOUT)
sd_send_cmd_get_rsp(chip, SEND_STATUS, sd_card->sd_addr,
SD_RSP_TYPE_R1, NULL, 0);
TRACE_RET(chip, STATUS_FAIL);
}
return STATUS_SUCCESS;
}
static int sd_check_csd(struct rts51x_chip *chip, char check_wp)
{
struct sd_info *sd_card = &(chip->sd_card);
int retval;
int i;
u8 csd_ver, trans_speed;
u8 rsp[16];
for (i = 0; i < 6; i++) {
if (monitor_card_cd(chip, SD_CARD) == CD_NOT_EXIST) {
sd_set_reset_fail(chip, SD_RESET_FAIL);
TRACE_RET(chip, STATUS_FAIL);
}
retval =
sd_send_cmd_get_rsp(chip, SEND_CSD, sd_card->sd_addr,
SD_RSP_TYPE_R2, rsp, 16);
if (retval == STATUS_SUCCESS)
break;
}
if (i == 6)
TRACE_RET(chip, STATUS_FAIL);
memcpy(sd_card->raw_csd, rsp + 1, 15);
/* Get CRC7 */
RTS51X_READ_REG(chip, SD_CMD5, sd_card->raw_csd + 15);
RTS51X_DEBUGP("CSD Response:\n");
RTS51X_DUMP(rsp, 16);
/* Get CSD Version */
csd_ver = (rsp[1] & 0xc0) >> 6;
RTS51X_DEBUGP("csd_ver = %d\n", csd_ver);
trans_speed = rsp[4];
if ((trans_speed & 0x07) == 0x02) { /* 10Mbits/s */
if ((trans_speed & 0xf8) >= 0x30) { /* >25Mbits/s */
if (chip->asic_code)
sd_card->sd_clock = 46;
else
sd_card->sd_clock = CLK_50;
} else if ((trans_speed & 0xf8) == 0x28) { /* 20Mbits/s */
if (chip->asic_code)
sd_card->sd_clock = 39;
else
sd_card->sd_clock = CLK_40;
} else if ((trans_speed & 0xf8) == 0x20) { /* 15Mbits/s */
if (chip->asic_code)
sd_card->sd_clock = 29;
else
sd_card->sd_clock = CLK_30;
} else if ((trans_speed & 0xf8) >= 0x10) { /* 12Mbits/s */
if (chip->asic_code)
sd_card->sd_clock = 23;
else
sd_card->sd_clock = CLK_20;
} else if ((trans_speed & 0x08) >= 0x08) { /* 10Mbits/s */
if (chip->asic_code)
sd_card->sd_clock = 19;
else
sd_card->sd_clock = CLK_20;
} /*else { */
/*If this ,then slow card will use 30M clock */
/* TRACE_RET(chip, STATUS_FAIL); */
/* } */
}
/*else {
TRACE_RET(chip, STATUS_FAIL);
} */
if (CHK_MMC_SECTOR_MODE(sd_card)) {
sd_card->capacity = 0;
} else {
/* For High-Capacity Card, CSD_STRUCTURE always be "0x1" */
if ((!CHK_SD_HCXC(sd_card)) || (csd_ver == 0)) {
/* Calculate total sector according to C_SIZE,
* C_SIZE_MULT & READ_BL_LEN */
u8 blk_size, c_size_mult;
u16 c_size;
/* Get READ_BL_LEN */
blk_size = rsp[6] & 0x0F;
/* Get C_SIZE */
c_size = ((u16) (rsp[7] & 0x03) << 10)
+ ((u16) rsp[8] << 2)
+ ((u16) (rsp[9] & 0xC0) >> 6);
/* Get C_SIZE_MUL */
c_size_mult = (u8) ((rsp[10] & 0x03) << 1);
c_size_mult += (rsp[11] & 0x80) >> 7;
/* Calculate total Capacity */
sd_card->capacity =
(((u32) (c_size + 1)) *
(1 << (c_size_mult + 2))) << (blk_size - 9);
} else {
/* High Capacity Card and Use CSD2.0 Version */
u32 total_sector = 0;
total_sector = (((u32) rsp[8] & 0x3f) << 16) |
((u32) rsp[9] << 8) | (u32) rsp[10];
/* Total Capacity= (C_SIZE+1) *
* 512K Byte = (C_SIZE+1)K Sector,1K = 1024 Bytes */
sd_card->capacity = (total_sector + 1) << 10;
}
}
/* We need check Write-Protected Status by Field PERM WP or TEMP WP */
if (check_wp) {
if (rsp[15] & 0x30)
chip->card_wp |= SD_CARD;
RTS51X_DEBUGP("CSD WP Status: 0x%x\n", rsp[15]);
}
return STATUS_SUCCESS;
}
static int sd_set_sample_push_timing(struct rts51x_chip *chip)
{
struct sd_info *sd_card = &(chip->sd_card);
int retval;
rts51x_init_cmd(chip);
if (CHK_SD_SDR104(sd_card) || CHK_SD_SDR50(sd_card)) {
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_CFG1,
0x0C | SD_ASYNC_FIFO_RST,
SD_30_MODE | SD_ASYNC_FIFO_RST);
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_CLK_SOURCE, 0xFF,
CRC_VAR_CLK0 | SD30_FIX_CLK | SAMPLE_VAR_CLK1);
} else if (CHK_SD_DDR50(sd_card) || CHK_MMC_DDR52(sd_card)) {
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_CFG1,
0x0C | SD_ASYNC_FIFO_RST,
SD_DDR_MODE | SD_ASYNC_FIFO_RST);
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_CLK_SOURCE, 0xFF,
CRC_VAR_CLK0 | SD30_FIX_CLK | SAMPLE_VAR_CLK1);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_PUSH_POINT_CTL,
DDR_VAR_TX_CMD_DAT, DDR_VAR_TX_CMD_DAT);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_SAMPLE_POINT_CTL,
DDR_VAR_RX_DAT | DDR_VAR_RX_CMD,
DDR_VAR_RX_DAT | DDR_VAR_RX_CMD);
} else {
u8 val = 0;
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_CFG1, 0x0C, SD_20_MODE);
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_CLK_SOURCE, 0xFF,
CRC_FIX_CLK | SD30_VAR_CLK0 | SAMPLE_VAR_CLK1);
if ((chip->option.sd_ctl & SD_PUSH_POINT_CTL_MASK) ==
SD_PUSH_POINT_AUTO) {
val = SD20_TX_NEG_EDGE;
} else if ((chip->option.sd_ctl & SD_PUSH_POINT_CTL_MASK) ==
SD_PUSH_POINT_DELAY) {
val = SD20_TX_14_AHEAD;
} else {
val = SD20_TX_NEG_EDGE;
}
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_PUSH_POINT_CTL,
SD20_TX_SEL_MASK, val);
if ((chip->option.sd_ctl & SD_SAMPLE_POINT_CTL_MASK) ==
SD_SAMPLE_POINT_AUTO) {
if (chip->asic_code) {
if (CHK_SD_HS(sd_card) || CHK_MMC_52M(sd_card))
val = SD20_RX_14_DELAY;
else
val = SD20_RX_POS_EDGE;
} else {
val = SD20_RX_14_DELAY;
}
} else if ((chip->option.sd_ctl & SD_SAMPLE_POINT_CTL_MASK) ==
SD_SAMPLE_POINT_DELAY) {
val = SD20_RX_14_DELAY;
} else {
val = SD20_RX_POS_EDGE;
}
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_SAMPLE_POINT_CTL,
SD20_RX_SEL_MASK, val);
}
if (CHK_MMC_DDR52(sd_card) && CHK_MMC_8BIT(sd_card)) {
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_DMA1_CTL,
EXTEND_DMA1_ASYNC_SIGNAL, 0);
}
retval = rts51x_send_cmd(chip, MODE_C, 100);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
return STATUS_SUCCESS;
}
static void sd_choose_proper_clock(struct rts51x_chip *chip)
{
struct sd_info *sd_card = &(chip->sd_card);
if (CHK_SD_SDR104(sd_card)) {
if (chip->asic_code)
sd_card->sd_clock = chip->option.asic_sd_sdr104_clk;
else
sd_card->sd_clock = chip->option.fpga_sd_sdr104_clk;
} else if (CHK_SD_DDR50(sd_card)) {
if (chip->asic_code)
sd_card->sd_clock = chip->option.asic_sd_ddr50_clk;
else
sd_card->sd_clock = chip->option.fpga_sd_ddr50_clk;
} else if (CHK_SD_SDR50(sd_card)) {
if (chip->asic_code)
sd_card->sd_clock = chip->option.asic_sd_sdr50_clk;
else
sd_card->sd_clock = chip->option.fpga_sd_sdr50_clk;
} else if (CHK_SD_HS(sd_card)) {
if (chip->asic_code)
sd_card->sd_clock = chip->option.asic_sd_hs_clk;
else
sd_card->sd_clock = chip->option.fpga_sd_hs_clk;
} else if (CHK_MMC_52M(sd_card) || CHK_MMC_DDR52(sd_card)) {
if (chip->asic_code)
sd_card->sd_clock = chip->option.asic_mmc_52m_clk;
else
sd_card->sd_clock = chip->option.fpga_mmc_52m_clk;
} else if (CHK_MMC_26M(sd_card)) {
if (chip->asic_code) {
sd_card->sd_clock = 46;
RTS51X_DEBUGP("Set MMC clock to 22.5MHz\n");
} else {
sd_card->sd_clock = CLK_50;
}
}
}
static int sd_set_init_para(struct rts51x_chip *chip)
{
struct sd_info *sd_card = &(chip->sd_card);
int retval;
retval = sd_set_sample_push_timing(chip);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
sd_choose_proper_clock(chip);
retval = switch_clock(chip, sd_card->sd_clock);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
return STATUS_SUCCESS;
}
int sd_select_card(struct rts51x_chip *chip, int select)
{
struct sd_info *sd_card = &(chip->sd_card);
int retval;
u8 cmd_idx, cmd_type;
u32 addr;
if (select) {
cmd_idx = SELECT_CARD;
cmd_type = SD_RSP_TYPE_R1;
addr = sd_card->sd_addr;
} else {
cmd_idx = DESELECT_CARD;
cmd_type = SD_RSP_TYPE_R0;
addr = 0;
}
retval = sd_send_cmd_get_rsp(chip, cmd_idx, addr, cmd_type, NULL, 0);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
return STATUS_SUCCESS;
}
static int sd_wait_currentstate_dataready(struct rts51x_chip *chip, u8 statechk,
u8 rdychk, u16 pollingcnt)
{
struct sd_info *sd_card = &(chip->sd_card);
int retval;
u8 rsp[5];
u16 i;
for (i = 0; i < pollingcnt; i++) {
retval =
sd_send_cmd_get_rsp(chip, SEND_STATUS, sd_card->sd_addr,
SD_RSP_TYPE_R1, rsp, 5);
if (retval == STATUS_SUCCESS) {
if (((rsp[3] & 0x1E) == statechk)
&& ((rsp[3] & 0x01) == rdychk)) {
return STATUS_SUCCESS;
}
} else {
rts51x_clear_sd_error(chip);
TRACE_RET(chip, STATUS_FAIL);
}
}
return STATUS_TIMEDOUT;
}
static int sd_voltage_switch(struct rts51x_chip *chip)
{
int retval;
u8 stat;
RTS51X_WRITE_REG(chip, SD_BUS_STAT,
SD_CLK_TOGGLE_EN | SD_CLK_FORCE_STOP,
SD_CLK_TOGGLE_EN);
retval =
sd_send_cmd_get_rsp(chip, VOLTAGE_SWITCH, 0, SD_RSP_TYPE_R1, NULL,
0);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
RTS51X_READ_REG(chip, SD_BUS_STAT, &stat);
if (stat & (SD_CMD_STATUS | SD_DAT3_STATUS | SD_DAT2_STATUS |
SD_DAT1_STATUS | SD_DAT0_STATUS))
TRACE_RET(chip, STATUS_FAIL);
rts51x_init_cmd(chip);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_BUS_STAT, 0xFF,
SD_CLK_FORCE_STOP);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_PAD_CTL, SD_IO_USING_1V8,
SD_IO_USING_1V8);
if (chip->asic_code)
rts51x_add_cmd(chip, WRITE_REG_CMD, LDO_POWER_CFG,
TUNE_SD18_MASK, TUNE_SD18_1V8);
retval = rts51x_send_cmd(chip, MODE_C, 100);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
wait_timeout(chip->option.D3318_off_delay);
RTS51X_WRITE_REG(chip, SD_BUS_STAT, 0xFF, SD_CLK_TOGGLE_EN);
wait_timeout(10);
RTS51X_READ_REG(chip, SD_BUS_STAT, &stat);
if ((stat & (SD_CMD_STATUS | SD_DAT3_STATUS | SD_DAT2_STATUS |
SD_DAT1_STATUS | SD_DAT0_STATUS)) !=
(SD_CMD_STATUS | SD_DAT3_STATUS | SD_DAT2_STATUS |
SD_DAT1_STATUS | SD_DAT0_STATUS)) {
rts51x_init_cmd(chip);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_BUS_STAT, 0xFF,
SD_CLK_FORCE_STOP);
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_CLK_EN, 0xFF, 0);
rts51x_send_cmd(chip, MODE_C, 100);
TRACE_RET(chip, STATUS_FAIL);
}
RTS51X_WRITE_REG(chip, SD_BUS_STAT,
SD_CLK_TOGGLE_EN | SD_CLK_FORCE_STOP, 0);
return STATUS_SUCCESS;
}
static int sd_change_phase(struct rts51x_chip *chip, u8 sample_point,
u8 tune_dir)
{
u16 SD_VP_CTL, SD_DCMPS_CTL;
u8 val;
int retval;
RTS51X_DEBUGP("sd_change_phase (sample_point = %d, tune_dir = %d)\n",
sample_point, tune_dir);
if (tune_dir == TUNE_RX) {
SD_VP_CTL = SD_VPCLK1_CTL;
SD_DCMPS_CTL = SD_DCMPS1_CTL;
} else {
SD_VP_CTL = SD_VPCLK0_CTL;
SD_DCMPS_CTL = SD_DCMPS0_CTL;
}
if (chip->asic_code) {
RTS51X_WRITE_REG(chip, CLK_DIV, CLK_CHANGE, CLK_CHANGE);
RTS51X_WRITE_REG(chip, SD_VP_CTL, 0x1F, sample_point);
RTS51X_WRITE_REG(chip, SD_VPCLK0_CTL, PHASE_NOT_RESET, 0);
RTS51X_WRITE_REG(chip, SD_VPCLK0_CTL, PHASE_NOT_RESET,
PHASE_NOT_RESET);
RTS51X_WRITE_REG(chip, CLK_DIV, CLK_CHANGE, 0);
} else {
#ifdef CONFIG_RTS5139_DEBUG
RTS51X_READ_REG(chip, SD_VP_CTL, &val);
RTS51X_DEBUGP("SD_VP_CTL: 0x%x\n", val);
RTS51X_READ_REG(chip, SD_DCMPS_CTL, &val);
RTS51X_DEBUGP("SD_DCMPS_CTL: 0x%x\n", val);
#endif
RTS51X_WRITE_REG(chip, CLK_DIV, CLK_CHANGE, CLK_CHANGE);
udelay(100);
RTS51X_WRITE_REG(chip, SD_VP_CTL, 0xFF,
PHASE_NOT_RESET | sample_point);
udelay(200);
rts51x_init_cmd(chip);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_DCMPS_CTL, DCMPS_CHANGE,
DCMPS_CHANGE);
rts51x_add_cmd(chip, CHECK_REG_CMD, SD_DCMPS_CTL,
DCMPS_CHANGE_DONE, DCMPS_CHANGE_DONE);
retval = rts51x_send_cmd(chip, MODE_CR, 100);
if (retval != STATUS_SUCCESS)
TRACE_GOTO(chip, Fail);
retval = rts51x_get_rsp(chip, 1, 500);
if (retval != STATUS_SUCCESS)
TRACE_GOTO(chip, Fail);
val = chip->rsp_buf[0];
if (val & DCMPS_ERROR)
TRACE_GOTO(chip, Fail);
if ((val & DCMPS_CURRENT_PHASE) != sample_point)
TRACE_GOTO(chip, Fail);
RTS51X_WRITE_REG(chip, SD_DCMPS_CTL, DCMPS_CHANGE, 0);
RTS51X_WRITE_REG(chip, CLK_DIV, CLK_CHANGE, 0);
udelay(100);
}
RTS51X_WRITE_REG(chip, SD_CFG1, SD_ASYNC_FIFO_RST, 0);
return STATUS_SUCCESS;
Fail:
#ifdef CONFIG_RTS5139_DEBUG
rts51x_ep0_read_register(chip, SD_VP_CTL, &val);
RTS51X_DEBUGP("SD_VP_CTL: 0x%x\n", val);
rts51x_ep0_read_register(chip, SD_DCMPS_CTL, &val);
RTS51X_DEBUGP("SD_DCMPS_CTL: 0x%x\n", val);
#endif
RTS51X_WRITE_REG(chip, SD_DCMPS_CTL, DCMPS_CHANGE, 0);
RTS51X_WRITE_REG(chip, SD_VP_CTL, PHASE_CHANGE, 0);
wait_timeout(10);
return STATUS_FAIL;
}
static int sd_check_spec(struct rts51x_chip *chip, u8 bus_width)
{
struct sd_info *sd_card = &(chip->sd_card);
int retval;
u8 cmd[5], buf[8];
retval =
sd_send_cmd_get_rsp(chip, APP_CMD, sd_card->sd_addr, SD_RSP_TYPE_R1,
NULL, 0);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, STATUS_FAIL);
cmd[0] = 0x40 | SEND_SCR;
cmd[1] = 0;
cmd[2] = 0;
cmd[3] = 0;
cmd[4] = 0;
retval =
sd_read_data(chip, SD_TM_NORMAL_READ, cmd, 5, 8, 1, bus_width, buf,
8, 250);
if (retval != STATUS_SUCCESS) {
rts51x_clear_sd_error(chip);
TRACE_RET(chip, retval);
}
memcpy(sd_card->raw_scr, buf, 8);
if ((buf[0] & 0x0F) == 0)
TRACE_RET(chip, STATUS_FAIL);
return STATUS_SUCCESS;
}
static int sd_query_switch_result(struct rts51x_chip *chip, u8 func_group,
u8 func_to_switch, u8 *buf, int buf_len)
{
u8 support_mask = 0, query_switch = 0, switch_busy = 0;
int support_offset = 0, query_switch_offset = 0, check_busy_offset = 0;
if (func_group == SD_FUNC_GROUP_1) {
support_offset = FUNCTION_GROUP1_SUPPORT_OFFSET;
query_switch_offset = FUNCTION_GROUP1_QUERY_SWITCH_OFFSET;
check_busy_offset = FUNCTION_GROUP1_CHECK_BUSY_OFFSET;
switch (func_to_switch) {
case HS_SUPPORT:
support_mask = HS_SUPPORT_MASK;
query_switch = HS_QUERY_SWITCH_OK;
switch_busy = HS_SWITCH_BUSY;
break;
case SDR50_SUPPORT:
support_mask = SDR50_SUPPORT_MASK;
query_switch = SDR50_QUERY_SWITCH_OK;
switch_busy = SDR50_SWITCH_BUSY;
break;
case SDR104_SUPPORT:
support_mask = SDR104_SUPPORT_MASK;
query_switch = SDR104_QUERY_SWITCH_OK;
switch_busy = SDR104_SWITCH_BUSY;
break;
case DDR50_SUPPORT:
support_mask = DDR50_SUPPORT_MASK;
query_switch = DDR50_QUERY_SWITCH_OK;
switch_busy = DDR50_SWITCH_BUSY;
break;
default:
TRACE_RET(chip, STATUS_FAIL);
}
} else if (func_group == SD_FUNC_GROUP_3) {
support_offset = FUNCTION_GROUP3_SUPPORT_OFFSET;
query_switch_offset = FUNCTION_GROUP3_QUERY_SWITCH_OFFSET;
check_busy_offset = FUNCTION_GROUP3_CHECK_BUSY_OFFSET;
switch (func_to_switch) {
case DRIVING_TYPE_A:
support_mask = DRIVING_TYPE_A_MASK;
query_switch = TYPE_A_QUERY_SWITCH_OK;
switch_busy = TYPE_A_SWITCH_BUSY;
break;
case DRIVING_TYPE_C:
support_mask = DRIVING_TYPE_C_MASK;
query_switch = TYPE_C_QUERY_SWITCH_OK;
switch_busy = TYPE_C_SWITCH_BUSY;
break;
case DRIVING_TYPE_D:
support_mask = DRIVING_TYPE_D_MASK;
query_switch = TYPE_D_QUERY_SWITCH_OK;
switch_busy = TYPE_D_SWITCH_BUSY;
break;
default:
TRACE_RET(chip, STATUS_FAIL);
}
} else if (func_group == SD_FUNC_GROUP_4) {
support_offset = FUNCTION_GROUP4_SUPPORT_OFFSET;
query_switch_offset = FUNCTION_GROUP4_QUERY_SWITCH_OFFSET;
check_busy_offset = FUNCTION_GROUP4_CHECK_BUSY_OFFSET;
switch (func_to_switch) {
case CURRENT_LIMIT_400:
support_mask = CURRENT_LIMIT_400_MASK;
query_switch = CURRENT_LIMIT_400_QUERY_SWITCH_OK;
switch_busy = CURRENT_LIMIT_400_SWITCH_BUSY;
break;
case CURRENT_LIMIT_600:
support_mask = CURRENT_LIMIT_600_MASK;
query_switch = CURRENT_LIMIT_600_QUERY_SWITCH_OK;
switch_busy = CURRENT_LIMIT_600_SWITCH_BUSY;
break;
case CURRENT_LIMIT_800:
support_mask = CURRENT_LIMIT_800_MASK;
query_switch = CURRENT_LIMIT_800_QUERY_SWITCH_OK;
switch_busy = CURRENT_LIMIT_800_SWITCH_BUSY;
break;
default:
TRACE_RET(chip, STATUS_FAIL);
}
} else {
TRACE_RET(chip, STATUS_FAIL);
}
if (func_group == SD_FUNC_GROUP_4)
buf[query_switch_offset] =
(buf[query_switch_offset] & 0xf0) >> 4;
if (!(buf[support_offset] & support_mask) ||
((buf[query_switch_offset] & 0x0F) != query_switch))
TRACE_RET(chip, STATUS_FAIL);
if ((buf[DATA_STRUCTURE_VER_OFFSET] == 0x01) &&
((buf[check_busy_offset] & switch_busy) == switch_busy))
TRACE_RET(chip, STATUS_FAIL);
return STATUS_SUCCESS;
}
static int sd_check_switch_mode(struct rts51x_chip *chip, u8 mode,
u8 func_group, u8 func_to_switch, u8 bus_width)
{
struct sd_info *sd_card = &(chip->sd_card);
int retval;
u8 cmd[5], buf[64];
RTS51X_DEBUGP("sd_check_switch_mode (mode = %d, func_group = %d,"
"func_to_switch = %d)\n", mode, func_group, func_to_switch);
cmd[0] = 0x40 | SWITCH;
cmd[1] = mode;
if (func_group == SD_FUNC_GROUP_1) {
cmd[2] = 0xFF;
cmd[3] = 0xFF;
cmd[4] = 0xF0 + func_to_switch;
} else if (func_group == SD_FUNC_GROUP_3) {
cmd[2] = 0xFF;
cmd[3] = 0xF0 + func_to_switch;
cmd[4] = 0xFF;
} else if (func_group == SD_FUNC_GROUP_4) {
cmd[2] = 0xFF;
cmd[3] = 0x0F + (func_to_switch << 4);
cmd[4] = 0xFF;
} else {
cmd[1] = SD_CHECK_MODE;
cmd[2] = 0xFF;
cmd[3] = 0xFF;
cmd[4] = 0xFF;
}
retval =
sd_read_data(chip, SD_TM_NORMAL_READ, cmd, 5, 64, 1, bus_width, buf,
64, 250);
if (retval != STATUS_SUCCESS) {
rts51x_clear_sd_error(chip);
TRACE_RET(chip, retval);
}
if (func_group == NO_ARGUMENT) {
sd_card->func_group1_mask = buf[0x0D];
sd_card->func_group2_mask = buf[0x0B];
sd_card->func_group3_mask = buf[0x09];
sd_card->func_group4_mask = buf[0x07];
RTS51X_DEBUGP("func_group1_mask = 0x%02x\n", buf[0x0D]);
RTS51X_DEBUGP("func_group2_mask = 0x%02x\n", buf[0x0B]);
RTS51X_DEBUGP("func_group3_mask = 0x%02x\n", buf[0x09]);
RTS51X_DEBUGP("func_group4_mask = 0x%02x\n", buf[0x07]);
} else {
if ((buf[0] == 0) && (buf[1] == 0))
TRACE_RET(chip, STATUS_FAIL);
retval =
sd_query_switch_result(chip, func_group, func_to_switch,
buf, 64);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
}
return STATUS_SUCCESS;
}
static int sd_check_switch(struct rts51x_chip *chip,
u8 func_group, u8 func_to_switch, u8 bus_width)
{
int retval;
int i;
int switch_good = 0;
for (i = 0; i < 3; i++) {
if (monitor_card_cd(chip, SD_CARD) == CD_NOT_EXIST) {
sd_set_reset_fail(chip, SD_RESET_FAIL);
TRACE_RET(chip, STATUS_FAIL);
}
retval = sd_check_switch_mode(chip, SD_CHECK_MODE, func_group,
func_to_switch, bus_width);
if (retval == STATUS_SUCCESS) {
u8 stat;
retval = sd_check_switch_mode(chip, SD_SWITCH_MODE,
func_group, func_to_switch, bus_width);
if (retval == STATUS_SUCCESS) {
switch_good = 1;
break;
}
RTS51X_READ_REG(chip, SD_STAT1, &stat);
if (stat & SD_CRC16_ERR) {
RTS51X_DEBUGP("SD CRC16 error when switching"
"mode\n");
TRACE_RET(chip, STATUS_FAIL);
}
}
wait_timeout(20);
}
if (!switch_good)
TRACE_RET(chip, STATUS_FAIL);
return STATUS_SUCCESS;
}
static int sd_switch_function(struct rts51x_chip *chip, u8 bus_width)
{
struct sd_info *sd_card = &(chip->sd_card);
int retval;
int i;
u8 func_to_switch = 0;
/* Get supported functions */
retval = sd_check_switch_mode(chip, SD_CHECK_MODE,
NO_ARGUMENT, NO_ARGUMENT, bus_width);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
sd_card->func_group1_mask &= ~(sd_card->sd_switch_fail);
for (i = 0; i < 4; i++) {
switch ((u8) (chip->option.sd_speed_prior >> (i * 8))) {
case DDR50_SUPPORT:
if ((sd_card->func_group1_mask & DDR50_SUPPORT_MASK)
&& (CHECK_UHS50(chip)))
func_to_switch = DDR50_SUPPORT;
break;
case SDR50_SUPPORT:
if ((sd_card->func_group1_mask & SDR50_SUPPORT_MASK)
&& (CHECK_UHS50(chip)))
func_to_switch = SDR50_SUPPORT;
break;
case HS_SUPPORT:
if (sd_card->func_group1_mask & HS_SUPPORT_MASK)
func_to_switch = HS_SUPPORT;
break;
default:
continue;
}
if (func_to_switch)
break;
}
RTS51X_DEBUGP("SD_FUNC_GROUP_1: func_to_switch = 0x%02x",
func_to_switch);
if (func_to_switch) {
retval =
sd_check_switch(chip, SD_FUNC_GROUP_1, func_to_switch,
bus_width);
if (retval != STATUS_SUCCESS) {
if (func_to_switch == SDR104_SUPPORT)
sd_card->sd_switch_fail = SDR104_SUPPORT_MASK;
else if (func_to_switch == DDR50_SUPPORT)
sd_card->sd_switch_fail = DDR50_SUPPORT_MASK;
else if (func_to_switch == SDR50_SUPPORT)
sd_card->sd_switch_fail = SDR50_SUPPORT_MASK;
else if (func_to_switch == HS_SUPPORT)
sd_card->sd_switch_fail = HS_SUPPORT_MASK;
TRACE_RET(chip, retval);
}
if (func_to_switch == SDR104_SUPPORT)
SET_SD_SDR104(sd_card);
else if (func_to_switch == DDR50_SUPPORT)
SET_SD_DDR50(sd_card);
else if (func_to_switch == SDR50_SUPPORT)
SET_SD_SDR50(sd_card);
else
SET_SD_HS(sd_card);
}
if (CHK_SD_DDR50(sd_card))
RTS51X_WRITE_REG(chip, SD_CFG1, 0x0C, SD_DDR_MODE);
func_to_switch = 0;
if (sd_card->func_group4_mask & CURRENT_LIMIT_400_MASK)
func_to_switch = CURRENT_LIMIT_400;
if (func_to_switch) {
RTS51X_DEBUGP("Try to switch current_limit_400\n");
retval =
sd_check_switch(chip, SD_FUNC_GROUP_4, func_to_switch,
bus_width);
RTS51X_DEBUGP("Switch current_limit_400 status: (%d)\n",
retval);
}
return STATUS_SUCCESS;
}
static int sd_wait_data_idle(struct rts51x_chip *chip)
{
int retval = STATUS_TIMEDOUT;
int i;
u8 val = 0;
for (i = 0; i < 100; i++) {
retval = rts51x_ep0_read_register(chip, SD_DATA_STATE, &val);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, STATUS_FAIL);
if (val & SD_DATA_IDLE) {
retval = STATUS_SUCCESS;
break;
}
udelay(100);
}
RTS51X_DEBUGP("SD_DATA_STATE: 0x%02x\n", val);
return retval;
}
static int sd_sdr_tuning_rx_cmd(struct rts51x_chip *chip, u8 sample_point)
{
int retval;
u8 cmd[5];
retval = sd_change_phase(chip, sample_point, TUNE_RX);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
cmd[0] = 0x40 | SEND_TUNING_PATTERN;
cmd[1] = 0;
cmd[2] = 0;
cmd[3] = 0;
cmd[4] = 0;
retval = sd_read_data(chip, SD_TM_AUTO_TUNING,
cmd, 5, 0x40, 1, SD_BUS_WIDTH_4, NULL, 0, 100);
if (retval != STATUS_SUCCESS) {
/* Wait till SD DATA IDLE */
(void)sd_wait_data_idle(chip);
rts51x_clear_sd_error(chip);
TRACE_RET(chip, STATUS_FAIL);
}
return STATUS_SUCCESS;
}
static int sd_ddr_tuning_rx_cmd(struct rts51x_chip *chip, u8 sample_point)
{
struct sd_info *sd_card = &(chip->sd_card);
int retval;
u8 cmd[5];
retval = sd_change_phase(chip, sample_point, TUNE_RX);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
RTS51X_DEBUGP("sd ddr tuning rx\n");
retval =
sd_send_cmd_get_rsp(chip, APP_CMD, sd_card->sd_addr, SD_RSP_TYPE_R1,
NULL, 0);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
cmd[0] = 0x40 | SD_STATUS;
cmd[1] = 0;
cmd[2] = 0;
cmd[3] = 0;
cmd[4] = 0;
retval = sd_read_data(chip, SD_TM_NORMAL_READ,
cmd, 5, 64, 1, SD_BUS_WIDTH_4, NULL, 0, 100);
if (retval != STATUS_SUCCESS) {
/* Wait till SD DATA IDLE */
(void)sd_wait_data_idle(chip);
rts51x_clear_sd_error(chip);
TRACE_RET(chip, STATUS_FAIL);
}
return STATUS_SUCCESS;
}
static int mmc_ddr_tunning_rx_cmd(struct rts51x_chip *chip, u8 sample_point)
{
struct sd_info *sd_card = &(chip->sd_card);
int retval;
u8 cmd[5], bus_width;
if (CHK_MMC_8BIT(sd_card))
bus_width = SD_BUS_WIDTH_8;
else if (CHK_MMC_4BIT(sd_card))
bus_width = SD_BUS_WIDTH_4;
else
bus_width = SD_BUS_WIDTH_1;
retval = sd_change_phase(chip, sample_point, TUNE_RX);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
RTS51X_DEBUGP("mmc ddr tuning rx\n");
cmd[0] = 0x40 | SEND_EXT_CSD;
cmd[1] = 0;
cmd[2] = 0;
cmd[3] = 0;
cmd[4] = 0;
retval = sd_read_data(chip, SD_TM_NORMAL_READ,
cmd, 5, 0x200, 1, bus_width, NULL, 0, 100);
if (retval != STATUS_SUCCESS) {
/* Wait till SD DATA IDLE */
(void)sd_wait_data_idle(chip);
rts51x_clear_sd_error(chip);
TRACE_RET(chip, STATUS_FAIL);
}
return STATUS_SUCCESS;
}
static int sd_sdr_tuning_tx_cmd(struct rts51x_chip *chip, u8 sample_point)
{
struct sd_info *sd_card = &(chip->sd_card);
int retval;
retval = sd_change_phase(chip, sample_point, TUNE_TX);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
RTS51X_WRITE_REG(chip, SD_CFG3, SD_RSP_80CLK_TIMEOUT_EN,
SD_RSP_80CLK_TIMEOUT_EN);
retval = sd_send_cmd_get_rsp(chip, SEND_STATUS, sd_card->sd_addr,
SD_RSP_TYPE_R1, NULL, 0);
if (retval != STATUS_SUCCESS) {
if (sd_check_err_code(chip, SD_RSP_TIMEOUT)) {
/* Tunning TX fail */
rts51x_ep0_write_register(chip, SD_CFG3,
SD_RSP_80CLK_TIMEOUT_EN, 0);
TRACE_RET(chip, STATUS_FAIL);
}
}
RTS51X_WRITE_REG(chip, SD_CFG3, SD_RSP_80CLK_TIMEOUT_EN, 0);
return STATUS_SUCCESS;
}
static int sd_ddr_tuning_tx_cmd(struct rts51x_chip *chip, u8 sample_point)
{
struct sd_info *sd_card = &(chip->sd_card);
int retval;
u8 cmd[5], bus_width;
retval = sd_change_phase(chip, sample_point, TUNE_TX);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
if (CHK_SD(sd_card)) {
bus_width = SD_BUS_WIDTH_4;
} else {
if (CHK_MMC_8BIT(sd_card))
bus_width = SD_BUS_WIDTH_8;
else if (CHK_MMC_4BIT(sd_card))
bus_width = SD_BUS_WIDTH_4;
else
bus_width = SD_BUS_WIDTH_1;
}
retval = sd_wait_currentstate_dataready(chip, 0x08, 1, 20);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, STATUS_FAIL);
RTS51X_WRITE_REG(chip, SD_CFG3, SD_RSP_80CLK_TIMEOUT_EN,
SD_RSP_80CLK_TIMEOUT_EN);
cmd[0] = 0x40 | PROGRAM_CSD;
cmd[1] = 0;
cmd[2] = 0;
cmd[3] = 0;
cmd[4] = 0;
retval = sd_write_data(chip, SD_TM_AUTO_WRITE_2,
cmd, 5, 16, 1, bus_width, sd_card->raw_csd, 16, 100);
if (retval != STATUS_SUCCESS) {
rts51x_clear_sd_error(chip);
/* Tunning TX fail */
rts51x_ep0_write_register(chip, SD_CFG3,
SD_RSP_80CLK_TIMEOUT_EN, 0);
TRACE_RET(chip, STATUS_FAIL);
}
RTS51X_WRITE_REG(chip, SD_CFG3, SD_RSP_80CLK_TIMEOUT_EN, 0);
sd_send_cmd_get_rsp(chip, SEND_STATUS, sd_card->sd_addr, SD_RSP_TYPE_R1,
NULL, 0);
return STATUS_SUCCESS;
}
static u8 sd_search_final_phase(struct rts51x_chip *chip, u32 phase_map,
u8 tune_dir)
{
struct sd_info *sd_card = &(chip->sd_card);
struct timing_phase_path path[MAX_PHASE + 1];
int i, j, cont_path_cnt;
int new_block, max_len;
u8 final_phase = 0xFF;
int final_path_idx;
if (phase_map == 0xffff) {
if (CHK_SD_DDR50(sd_card)) {
if (tune_dir == TUNE_TX)
final_phase = chip->option.ddr50_tx_phase;
else
final_phase = chip->option.ddr50_rx_phase;
RTS51X_DEBUGP("DDR50 tuning dir:%d all pass,"
"so select default phase:0x%x.\n",
tune_dir, final_phase);
} else {
if (tune_dir == TUNE_TX)
final_phase = chip->option.sdr50_tx_phase;
else
final_phase = chip->option.sdr50_rx_phase;
RTS51X_DEBUGP("SDR50 tuning dir:%d all pass,"
"so select default phase:0x%x.\n",
tune_dir, final_phase);
}
goto Search_Finish;
}
cont_path_cnt = 0;
new_block = 1;
j = 0;
for (i = 0; i < MAX_PHASE + 1; i++) {
if (phase_map & (1 << i)) {
if (new_block) {
new_block = 0;
j = cont_path_cnt++;
path[j].start = i;
path[j].end = i;
} else {
path[j].end = i;
}
} else {
new_block = 1;
if (cont_path_cnt) {
int idx = cont_path_cnt - 1;
path[idx].len =
path[idx].end - path[idx].start + 1;
path[idx].mid =
path[idx].start + path[idx].len / 2;
}
}
}
if (cont_path_cnt == 0) {
RTS51X_DEBUGP("No continuous phase path\n");
goto Search_Finish;
} else {
int idx = cont_path_cnt - 1;
path[idx].len = path[idx].end - path[idx].start + 1;
path[idx].mid = path[idx].start + path[idx].len / 2;
}
if ((path[0].start == 0) &&
(path[cont_path_cnt - 1].end == MAX_PHASE)) {
path[0].start = path[cont_path_cnt - 1].start - MAX_PHASE - 1;
path[0].len += path[cont_path_cnt - 1].len;
path[0].mid = path[0].start + path[0].len / 2;
if (path[0].mid < 0)
path[0].mid += MAX_PHASE + 1;
cont_path_cnt--;
}
max_len = 0;
final_phase = 0;
final_path_idx = 0;
for (i = 0; i < cont_path_cnt; i++) {
if (path[i].len > max_len) {
max_len = path[i].len;
final_phase = (u8) path[i].mid;
final_path_idx = i;
}
RTS51X_DEBUGP("path[%d].start = %d\n", i, path[i].start);
RTS51X_DEBUGP("path[%d].end = %d\n", i, path[i].end);
RTS51X_DEBUGP("path[%d].len = %d\n", i, path[i].len);
RTS51X_DEBUGP("path[%d].mid = %d\n", i, path[i].mid);
RTS51X_DEBUGP("\n");
}
if ((tune_dir == TUNE_TX) && (CHK_SD_SDR50(sd_card))
&& chip->option.sdr50_phase_sel) {
if (max_len > 6) {
int temp_mid = (max_len - 6) / 2;
int temp_final_phase =
path[final_path_idx].end - (max_len -
(3 + temp_mid));
if (temp_final_phase < 0)
final_phase = temp_final_phase + MAX_PHASE + 1;
else
final_phase = (u8) temp_final_phase;
}
}
Search_Finish:
RTS51X_DEBUGP("Final chosen phase: %d\n", final_phase);
return final_phase;
}
static int sd_tuning_rx(struct rts51x_chip *chip)
{
struct sd_info *sd_card = &(chip->sd_card);
int retval;
int i, j;
u32 raw_phase_map[3], phase_map;
u8 final_phase;
int (*tuning_cmd) (struct rts51x_chip *chip, u8 sample_point);
if (CHK_SD(sd_card)) {
if (CHK_SD_DDR50(sd_card))
tuning_cmd = sd_ddr_tuning_rx_cmd;
else
tuning_cmd = sd_sdr_tuning_rx_cmd;
} else {
if (CHK_MMC_DDR52(sd_card))
tuning_cmd = mmc_ddr_tunning_rx_cmd;
else
TRACE_RET(chip, STATUS_FAIL);
}
for (i = 0; i < 3; i++) {
raw_phase_map[i] = 0;
for (j = MAX_PHASE; j >= 0; j--) {
if (monitor_card_cd(chip, SD_CARD) == CD_NOT_EXIST) {
sd_set_reset_fail(chip, SD_RESET_FAIL);
TRACE_RET(chip, STATUS_FAIL);
}
retval = tuning_cmd(chip, (u8) j);
if (retval == STATUS_SUCCESS)
raw_phase_map[i] |= 1 << j;
else
RTS51X_DEBUGP("Tuning phase %d fail\n", j);
}
}
phase_map = raw_phase_map[0] & raw_phase_map[1] & raw_phase_map[2];
for (i = 0; i < 3; i++)
RTS51X_DEBUGP("RX raw_phase_map[%d] = 0x%04x\n", i,
raw_phase_map[i]);
RTS51X_DEBUGP("RX phase_map = 0x%04x\n", phase_map);
final_phase = sd_search_final_phase(chip, phase_map, TUNE_RX);
if (final_phase == 0xFF)
TRACE_RET(chip, STATUS_FAIL);
retval = tuning_cmd(chip, final_phase);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
return STATUS_SUCCESS;
}
static int sd_ddr_pre_tuning_tx(struct rts51x_chip *chip)
{
struct sd_info *sd_card = &(chip->sd_card);
int retval;
u8 i;
u8 pre_tune_tx_phase;
u32 pre_tune_phase_map;
RTS51X_WRITE_REG(chip, SD_CFG3, SD_RSP_80CLK_TIMEOUT_EN,
SD_RSP_80CLK_TIMEOUT_EN);
pre_tune_tx_phase = 0xFF;
pre_tune_phase_map = 0x0000;
for (i = 0; i < MAX_PHASE + 1; i++) {
if (monitor_card_cd(chip, SD_CARD) == CD_NOT_EXIST) {
sd_set_reset_fail(chip, SD_RESET_FAIL);
TRACE_RET(chip, STATUS_FAIL);
}
retval = sd_change_phase(chip, (u8) i, TUNE_TX);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
retval =
sd_send_cmd_get_rsp(chip, SEND_STATUS, sd_card->sd_addr,
SD_RSP_TYPE_R1, NULL, 0);
if ((retval == STATUS_SUCCESS)
|| !sd_check_err_code(chip, SD_RSP_TIMEOUT))
pre_tune_phase_map |= (u32) 1 << i;
}
RTS51X_WRITE_REG(chip, SD_CFG3, SD_RSP_80CLK_TIMEOUT_EN, 0);
pre_tune_tx_phase =
sd_search_final_phase(chip, pre_tune_phase_map, TUNE_TX);
if (pre_tune_tx_phase == 0xFF)
TRACE_RET(chip, STATUS_FAIL);
sd_change_phase(chip, pre_tune_tx_phase, TUNE_TX);
RTS51X_DEBUGP("DDR TX pre tune phase: %d\n", (int)pre_tune_tx_phase);
return STATUS_SUCCESS;
}
static int sd_tuning_tx(struct rts51x_chip *chip)
{
struct sd_info *sd_card = &(chip->sd_card);
int retval;
int i, j;
u32 raw_phase_map[3], phase_map;
u8 final_phase;
int (*tuning_cmd) (struct rts51x_chip *chip, u8 sample_point);
if (CHK_SD(sd_card)) {
if (CHK_SD_DDR50(sd_card))
tuning_cmd = sd_ddr_tuning_tx_cmd;
else
tuning_cmd = sd_sdr_tuning_tx_cmd;
} else {
if (CHK_MMC_DDR52(sd_card))
tuning_cmd = sd_ddr_tuning_tx_cmd;
else
TRACE_RET(chip, STATUS_FAIL);
}
for (i = 0; i < 3; i++) {
raw_phase_map[i] = 0;
for (j = MAX_PHASE; j >= 0; j--) {
if (monitor_card_cd(chip, SD_CARD) == CD_NOT_EXIST) {
sd_set_reset_fail(chip, SD_RESET_FAIL);
TRACE_RET(chip, STATUS_FAIL);
}
retval = tuning_cmd(chip, (u8) j);
if (retval == STATUS_SUCCESS)
raw_phase_map[i] |= 1 << j;
else
RTS51X_DEBUGP("Tuning phase %d fail\n", j);
}
}
phase_map = raw_phase_map[0] & raw_phase_map[1] & raw_phase_map[2];
for (i = 0; i < 3; i++)
RTS51X_DEBUGP("TX raw_phase_map[%d] = 0x%04x\n", i,
raw_phase_map[i]);
RTS51X_DEBUGP("TX phase_map = 0x%04x\n", phase_map);
final_phase = sd_search_final_phase(chip, phase_map, TUNE_TX);
if (final_phase == 0xFF)
TRACE_RET(chip, STATUS_FAIL);
retval = tuning_cmd(chip, final_phase);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
return STATUS_SUCCESS;
}
static int sd_sdr_tuning(struct rts51x_chip *chip)
{
int retval;
retval = sd_tuning_tx(chip);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
retval = sd_tuning_rx(chip);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
return STATUS_SUCCESS;
}
static int sd_ddr_tuning(struct rts51x_chip *chip)
{
int retval;
if (!(chip->option.sd_ctl & SD_DDR_TX_PHASE_SET_BY_USER)) {
retval = sd_ddr_pre_tuning_tx(chip);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
} else {
retval =
sd_change_phase(chip, (u8) chip->option.sd_ddr_tx_phase,
TUNE_TX);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
}
retval = sd_tuning_rx(chip);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
if (!(chip->option.sd_ctl & SD_DDR_TX_PHASE_SET_BY_USER)) {
retval = sd_tuning_tx(chip);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
}
return STATUS_SUCCESS;
}
static int mmc_ddr_tuning(struct rts51x_chip *chip)
{
int retval;
if (!(chip->option.sd_ctl & MMC_DDR_TX_PHASE_SET_BY_USER)) {
retval = sd_ddr_pre_tuning_tx(chip);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
} else {
retval =
sd_change_phase(chip, (u8) chip->option.mmc_ddr_tx_phase,
TUNE_TX);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
}
retval = sd_tuning_rx(chip);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
if (!(chip->option.sd_ctl & MMC_DDR_TX_PHASE_SET_BY_USER)) {
retval = sd_tuning_tx(chip);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
}
return STATUS_SUCCESS;
}
int sd_switch_clock(struct rts51x_chip *chip)
{
struct sd_info *sd_card = &(chip->sd_card);
int retval;
int re_tuning = 0;
retval = rts51x_select_card(chip, SD_CARD);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
if (CHK_SD30_SPEED(sd_card) || CHK_MMC_DDR52(sd_card)) {
if (sd_card->sd_clock != chip->cur_clk)
re_tuning = 1;
}
retval = switch_clock(chip, sd_card->sd_clock);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
if (re_tuning) {
if (CHK_SD(sd_card)) {
if (CHK_SD_DDR50(sd_card))
retval = sd_ddr_tuning(chip);
else
retval = sd_sdr_tuning(chip);
} else {
if (CHK_MMC_DDR52(sd_card))
retval = mmc_ddr_tuning(chip);
}
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
}
return STATUS_SUCCESS;
}
static int sd_prepare_reset(struct rts51x_chip *chip)
{
struct sd_info *sd_card = &(chip->sd_card);
int retval;
if (chip->asic_code)
sd_card->sd_clock = 29;
else
sd_card->sd_clock = CLK_30;
/* Set SD Clocks */
retval = sd_set_init_para(chip);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
rts51x_init_cmd(chip);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_CFG1, 0xFF,
SD_CLK_DIVIDE_128 | SD_20_MODE | SD_BUS_WIDTH_1);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_SAMPLE_POINT_CTL, 0xFF,
SD20_RX_POS_EDGE);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_PUSH_POINT_CTL, 0xFF, 0);
retval = rts51x_send_cmd(chip, MODE_C, 100);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
retval = rts51x_select_card(chip, SD_CARD);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
return STATUS_SUCCESS;
}
static void sd_pull_ctl_disable(struct rts51x_chip *chip)
{
if (CHECK_PKG(chip, LQFP48)) {
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_PULL_CTL1, 0xFF, 0x55);
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_PULL_CTL2, 0xFF, 0x55);
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_PULL_CTL3, 0xFF, 0x95);
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_PULL_CTL4, 0xFF, 0x55);
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_PULL_CTL5, 0xFF, 0x55);
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_PULL_CTL6, 0xFF, 0xA5);
} else {
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_PULL_CTL1, 0xFF, 0x65);
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_PULL_CTL2, 0xFF, 0x55);
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_PULL_CTL3, 0xFF, 0x95);
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_PULL_CTL4, 0xFF, 0x55);
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_PULL_CTL5, 0xFF, 0x56);
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_PULL_CTL6, 0xFF, 0x59);
}
}
static void sd_pull_ctl_enable(struct rts51x_chip *chip)
{
if (CHECK_PKG(chip, LQFP48)) {
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_PULL_CTL1, 0xFF, 0xAA);
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_PULL_CTL2, 0xFF, 0xAA);
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_PULL_CTL3, 0xFF, 0xA9);
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_PULL_CTL4, 0xFF, 0x55);
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_PULL_CTL5, 0xFF, 0x55);
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_PULL_CTL6, 0xFF, 0xA5);
} else {
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_PULL_CTL1, 0xFF, 0xA5);
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_PULL_CTL2, 0xFF, 0x9A);
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_PULL_CTL3, 0xFF, 0xA5);
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_PULL_CTL4, 0xFF, 0x9A);
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_PULL_CTL5, 0xFF, 0x65);
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_PULL_CTL6, 0xFF, 0x5A);
}
}
static int sd_init_power(struct rts51x_chip *chip)
{
int retval;
rts51x_init_cmd(chip);
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_PWR_CTL, LDO3318_PWR_MASK,
LDO_ON);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_PAD_CTL, SD_IO_USING_1V8,
SD_IO_USING_3V3);
if (chip->asic_code)
rts51x_add_cmd(chip, WRITE_REG_CMD, LDO_POWER_CFG,
TUNE_SD18_MASK, TUNE_SD18_3V3);
if (chip->asic_code)
sd_pull_ctl_disable(chip);
else
rts51x_add_cmd(chip, WRITE_REG_CMD, FPGA_PULL_CTL,
FPGA_SD_PULL_CTL_BIT | 0x20,
FPGA_SD_PULL_CTL_BIT);
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_OE, SD_OUTPUT_EN, 0);
if (!chip->option.FT2_fast_mode)
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_PWR_CTL, POWER_MASK,
POWER_OFF);
retval = rts51x_send_cmd(chip, MODE_C, 100);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
if (!chip->option.FT2_fast_mode) {
#ifdef SD_XD_IO_FOLLOW_PWR
if (CHECK_PKG(chip, LQFP48)
|| chip->option.rts5129_D3318_off_enable)
rts51x_write_register(chip, CARD_PWR_CTL,
LDO_OFF, LDO_OFF);
#endif
wait_timeout(250);
#ifdef SD_XD_IO_FOLLOW_PWR
if (CHECK_PKG(chip, LQFP48)
|| chip->option.rts5129_D3318_off_enable) {
rts51x_init_cmd(chip);
if (chip->asic_code)
sd_pull_ctl_enable(chip);
else
rts51x_add_cmd(chip, WRITE_REG_CMD,
FPGA_PULL_CTL,
FPGA_SD_PULL_CTL_BIT | 0x20, 0);
retval = rts51x_send_cmd(chip, MODE_C, 100);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
} else {
if (chip->asic_code)
rts51x_write_register(chip, CARD_PULL_CTL6,
0x03, 0x00);
}
#endif
/* Power on card */
retval = card_power_on(chip, SD_CARD);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
wait_timeout(260);
#ifdef SUPPORT_OCP
rts51x_get_card_status(chip, &(chip->card_status));
chip->ocp_stat = (chip->card_status >> 4) & 0x03;
if (chip->ocp_stat & (MS_OCP_NOW | MS_OCP_EVER)) {
RTS51X_DEBUGP("Over current, OCPSTAT is 0x%x\n",
chip->ocp_stat);
TRACE_RET(chip, STATUS_FAIL);
}
#endif
}
rts51x_init_cmd(chip);
if (chip->asic_code) {
sd_pull_ctl_enable(chip);
} else {
rts51x_add_cmd(chip, WRITE_REG_CMD, FPGA_PULL_CTL,
FPGA_SD_PULL_CTL_BIT | 0x20, 0);
}
retval = rts51x_send_cmd(chip, MODE_C, 100);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
#ifdef SD_XD_IO_FOLLOW_PWR
rts51x_write_register(chip, CARD_INT_PEND, XD_INT | MS_INT | SD_INT,
XD_INT | MS_INT | SD_INT);
#endif
RTS51X_WRITE_REG(chip, CARD_OE, SD_OUTPUT_EN, SD_OUTPUT_EN);
return STATUS_SUCCESS;
}
static int sd_dummy_clock(struct rts51x_chip *chip)
{
RTS51X_WRITE_REG(chip, SD_BUS_STAT, SD_CLK_TOGGLE_EN, SD_CLK_TOGGLE_EN);
wait_timeout(5);
RTS51X_WRITE_REG(chip, SD_BUS_STAT, SD_CLK_TOGGLE_EN, 0x00);
return STATUS_SUCCESS;
}
int reset_sd(struct rts51x_chip *chip)
{
struct sd_info *sd_card = &(chip->sd_card);
int retval, i = 0, j = 0, k = 0, hi_cap_flow = 0;
int sd_dont_switch = 0;
int support_1v8 = 0;
u8 rsp[16];
u8 switch_bus_width;
u32 voltage = 0;
u8 cmd[5], buf[64];
u16 sd_card_type;
SET_SD(sd_card);
CLR_RETRY_SD20_MODE(sd_card);
Switch_Fail:
i = 0;
j = 0;
k = 0;
hi_cap_flow = 0;
support_1v8 = 0;
retval = sd_prepare_reset(chip);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
sd_dummy_clock(chip);
/* Start Initialization Process of SD Card */
RTY_SD_RST:
retval =
sd_send_cmd_get_rsp(chip, GO_IDLE_STATE, 0, SD_RSP_TYPE_R0, NULL,
0);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
wait_timeout(20);
retval =
sd_send_cmd_get_rsp(chip, SEND_IF_COND, 0x000001AA, SD_RSP_TYPE_R7,
rsp, 5);
if (retval == STATUS_SUCCESS) {
if ((rsp[4] == 0xAA) && ((rsp[3] & 0x0f) == 0x01)) {
hi_cap_flow = 1;
if (CHK_RETRY_SD20_MODE(sd_card)) {
voltage =
SUPPORT_VOLTAGE |
SUPPORT_HIGH_AND_EXTENDED_CAPACITY;
} else {
voltage =
SUPPORT_VOLTAGE |
SUPPORT_HIGH_AND_EXTENDED_CAPACITY |
SUPPORT_MAX_POWER_PERMANCE | SUPPORT_1V8;
}
}
}
if (!hi_cap_flow) {
voltage = SUPPORT_VOLTAGE;
retval =
sd_send_cmd_get_rsp(chip, GO_IDLE_STATE, 0, SD_RSP_TYPE_R0,
NULL, 0);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
wait_timeout(20);
}
/* ACMD41 */
do {
{
u8 temp = 0;
rts51x_read_register(chip, CARD_INT_PEND, &temp);
RTS51X_DEBUGP("CARD_INT_PEND:%x\n", temp);
if (temp & SD_INT) {
chip->reset_need_retry = 1;
rts51x_write_register(chip, CARD_INT_PEND,
XD_INT | SD_INT | MS_INT,
XD_INT | SD_INT | MS_INT);
sd_set_reset_fail(chip, SD_RESET_FAIL);
TRACE_RET(chip, STATUS_FAIL);
}
}
RTY_CMD55:
retval =
sd_send_cmd_get_rsp(chip, APP_CMD, 0, SD_RSP_TYPE_R1, NULL,
0);
if (retval != STATUS_SUCCESS) {
if (monitor_card_cd(chip, SD_CARD) == CD_NOT_EXIST) {
sd_set_reset_fail(chip, SD_RESET_FAIL);
TRACE_RET(chip, STATUS_FAIL);
}
j++;
if (chip->option.speed_mmc) {
if (j < 2)
goto RTY_CMD55;
else
TRACE_RET(chip, STATUS_FAIL);
} else {
if (j < 3)
goto RTY_SD_RST;
else
TRACE_RET(chip, STATUS_FAIL);
}
}
retval =
sd_send_cmd_get_rsp(chip, SD_APP_OP_COND, voltage,
SD_RSP_TYPE_R3, rsp, 5);
if (retval != STATUS_SUCCESS) {
k++;
if (k < 3)
goto RTY_SD_RST;
else
TRACE_RET(chip, STATUS_FAIL);
}
i++;
wait_timeout(20);
} while (!(rsp[1] & 0x80) && (i < 255)); /* Not complete power on */
if (i == 255) {
/* Time out */
TRACE_RET(chip, STATUS_FAIL);
}
if (hi_cap_flow) {
if (rsp[1] & 0x40)
SET_SD_HCXC(sd_card);
else
CLR_SD_HCXC(sd_card);
if (!CHK_RETRY_SD20_MODE(sd_card)) {
if ((CHK_SD_HCXC(sd_card)) && (CHECK_UHS50(chip))) {
support_1v8 = (rsp[1] & 0x01) ? 1 : 0;
RTS51X_DEBUGP("support_1v8 = %d\n",
support_1v8);
}
}
} else {
CLR_SD_HCXC(sd_card);
support_1v8 = 0;
}
/* CMD11: Switch Voltage */
if (support_1v8 && CHECK_UHS50(chip)
&& !(((u8) chip->option.sd_speed_prior & SDR104_SUPPORT) ==
HS_SUPPORT)) {
retval = sd_voltage_switch(chip);
if (retval != STATUS_SUCCESS) {
SET_RETRY_SD20_MODE(sd_card);
sd_init_power(chip);
RTS51X_DEBUGP("1.8v switch fail\n");
goto Switch_Fail;
}
}
/* CMD 2 */
retval =
sd_send_cmd_get_rsp(chip, ALL_SEND_CID, 0, SD_RSP_TYPE_R2, NULL, 0);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
/* CMD 3 */
retval =
sd_send_cmd_get_rsp(chip, SEND_RELATIVE_ADDR, 0, SD_RSP_TYPE_R6,
rsp, 5);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
sd_card->sd_addr = (u32) rsp[1] << 24;
sd_card->sd_addr += (u32) rsp[2] << 16;
/* Get CSD register for Calculating Timing,Capacity,
* Check CSD to determine as if this is the SD ROM card */
retval = sd_check_csd(chip, 1);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
/* Select SD card */
retval = sd_select_card(chip, 1);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
/* ACMD42 */
retval =
sd_send_cmd_get_rsp(chip, APP_CMD, sd_card->sd_addr, SD_RSP_TYPE_R1,
NULL, 0);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
retval =
sd_send_cmd_get_rsp(chip, SET_CLR_CARD_DETECT, 0, SD_RSP_TYPE_R1,
NULL, 0);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
if (support_1v8) {
/* ACMD6 */
retval =
sd_send_cmd_get_rsp(chip, APP_CMD, sd_card->sd_addr,
SD_RSP_TYPE_R1, NULL, 0);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
/* Enable 4 bit data bus */
retval =
sd_send_cmd_get_rsp(chip, SET_BUS_WIDTH, 2, SD_RSP_TYPE_R1,
NULL, 0);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
switch_bus_width = SD_BUS_WIDTH_4;
} else {
switch_bus_width = SD_BUS_WIDTH_1;
}
/* Set block length 512 bytes for all block commands */
retval = sd_send_cmd_get_rsp(chip, SET_BLOCKLEN,
0x200, SD_RSP_TYPE_R1, NULL, 0);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
RTS51X_WRITE_REG(chip, SD_CFG1, SD_CLK_DIVIDE_MASK, SD_CLK_DIVIDE_0);
if (!(sd_card->raw_csd[4] & 0x40)) {
sd_dont_switch = 1;
RTS51X_DEBUGP("Not support class ten\n");
}
if (!sd_dont_switch) {
/* Check the card whether flow SD1.1 spec or higher */
retval = sd_check_spec(chip, switch_bus_width);
if (retval == STATUS_SUCCESS) {
retval = sd_switch_function(chip, switch_bus_width);
if (retval != STATUS_SUCCESS) {
if ((sd_card->sd_switch_fail ==
SDR104_SUPPORT_MASK)
|| (sd_card->sd_switch_fail ==
DDR50_SUPPORT_MASK)
|| (sd_card->sd_switch_fail ==
SDR50_SUPPORT_MASK)) {
sd_init_power(chip);
SET_RETRY_SD20_MODE(sd_card);
} else if (sd_card->sd_switch_fail ==
HS_SUPPORT_MASK) {
sd_dont_switch = 1;
}
goto Switch_Fail;
}
} else {
if (support_1v8) {
SET_RETRY_SD20_MODE(sd_card);
sd_init_power(chip);
sd_dont_switch = 1;
goto Switch_Fail;
}
}
}
if (!support_1v8) {
/* ACMD6 */
retval =
sd_send_cmd_get_rsp(chip, APP_CMD, sd_card->sd_addr,
SD_RSP_TYPE_R1, NULL, 0);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
/* Enable 4 bit data bus */
retval =
sd_send_cmd_get_rsp(chip, SET_BUS_WIDTH, 2, SD_RSP_TYPE_R1,
NULL, 0);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
}
if (CHK_SD30_SPEED(sd_card)) {
rts51x_write_register(chip, SD30_DRIVE_SEL, SD30_DRIVE_MASK,
0x03);
retval = sd_set_init_para(chip);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
if (CHK_SD_DDR50(sd_card))
retval = sd_ddr_tuning(chip);
else
retval = sd_sdr_tuning(chip);
if (retval != STATUS_SUCCESS) {
SET_RETRY_SD20_MODE(sd_card);
RTS51X_DEBUGP("tuning phase fail,goto SD20 mode\n");
sd_init_power(chip);
CLR_SD30_SPEED(sd_card);
goto Switch_Fail;
}
if (STATUS_SUCCESS ==
sd_wait_currentstate_dataready(chip, 0x08, 1, 20)) {
cmd[0] = 0x40 | READ_SINGLE_BLOCK;
cmd[1] = 0x00;
cmd[2] = 0x00;
cmd[3] = 0x00;
cmd[4] = 0x00;
retval =
sd_read_data(chip, SD_TM_NORMAL_READ, cmd, 5, 512,
1, SD_BUS_WIDTH_4, NULL, 0, 600);
if (retval != STATUS_SUCCESS) {
SET_RETRY_SD20_MODE(sd_card);
RTS51X_DEBUGP("read lba0 fail,"
"goto SD20 mode\n");
sd_init_power(chip);
CLR_SD30_SPEED(sd_card);
goto Switch_Fail;
}
}
}
sd_send_cmd_get_rsp(chip, SEND_STATUS, sd_card->sd_addr, SD_RSP_TYPE_R1,
NULL, 0);
retval = sd_send_cmd_get_rsp(chip, APP_CMD, sd_card->sd_addr,
SD_RSP_TYPE_R1, NULL, 0);
if (retval == STATUS_SUCCESS) {
int ret;
cmd[0] = 0x40 | SEND_STATUS;
cmd[1] = 0x00;
cmd[2] = 0x00;
cmd[3] = 0x00;
cmd[4] = 0x00;
ret =
sd_read_data(chip, SD_TM_NORMAL_READ, cmd, 5, 64, 1,
SD_BUS_WIDTH_4, buf, 64, 600);
if (ret == STATUS_SUCCESS) {
sd_card_type = ((u16) buf[2] << 8) | (u16) buf[3];
RTS51X_DEBUGP("sd_card_type:0x%4x\n", sd_card_type);
if ((sd_card_type == 0x0001)
|| (sd_card_type == 0x0002))
chip->card_wp |= SD_CARD;
} else {
rts51x_clear_sd_error(chip);
sd_send_cmd_get_rsp(chip, SEND_STATUS, sd_card->sd_addr,
SD_RSP_TYPE_R1, NULL, 0);
}
} else {
rts51x_clear_sd_error(chip);
sd_send_cmd_get_rsp(chip, SEND_STATUS, sd_card->sd_addr,
SD_RSP_TYPE_R1, NULL, 0);
}
/* Check SD Machanical Write-Protect Switch */
retval = rts51x_get_card_status(chip, &(chip->card_status));
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
if (chip->card_status & SD_WP)
chip->card_wp |= SD_CARD;
chip->card_bus_width[chip->card2lun[SD_CARD]] = 4;
return STATUS_SUCCESS;
}
static int mmc_test_switch_bus(struct rts51x_chip *chip, u8 width)
{
struct sd_info *sd_card = &(chip->sd_card);
int retval;
u8 buf[8] = { 0 }, bus_width;
u16 byte_cnt;
int len;
retval =
sd_send_cmd_get_rsp(chip, BUSTEST_W, 0, SD_RSP_TYPE_R1, NULL, 0);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
if (width == MMC_8BIT_BUS) {
buf[0] = 0x55;
buf[1] = 0xAA;
len = 8;
byte_cnt = 8;
bus_width = SD_BUS_WIDTH_8;
} else {
buf[0] = 0x5A;
len = 4;
byte_cnt = 4;
bus_width = SD_BUS_WIDTH_4;
}
retval = sd_write_data(chip, SD_TM_AUTO_WRITE_3,
NULL, 0, byte_cnt, 1, bus_width, buf, len, 100);
if (retval != STATUS_SUCCESS) {
u8 val1 = 0, val2 = 0;
rts51x_ep0_read_register(chip, SD_STAT1, &val1);
rts51x_ep0_read_register(chip, SD_STAT2, &val2);
rts51x_clear_sd_error(chip);
if ((val1 & 0xE0) || val2)
TRACE_RET(chip, STATUS_FAIL);
}
RTS51X_DEBUGP("SD/MMC CMD %d\n", BUSTEST_R);
rts51x_init_cmd(chip);
/* CMD14 */
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_CMD0, 0xFF, 0x40 | BUSTEST_R);
if (width == MMC_8BIT_BUS)
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_BYTE_CNT_L, 0xFF, 0x08);
else
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_BYTE_CNT_L, 0xFF, 0x04);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_BLOCK_CNT_L, 0xFF, 1);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_BLOCK_CNT_H, 0xFF, 0);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_CFG2, 0xFF,
SD_CALCULATE_CRC7 | SD_NO_CHECK_CRC16 |
SD_NO_WAIT_BUSY_END | SD_CHECK_CRC7 | SD_RSP_LEN_6);
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_DATA_SOURCE, 0x01,
PINGPONG_BUFFER);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_TRANSFER, 0xFF,
SD_TM_NORMAL_READ | SD_TRANSFER_START);
rts51x_add_cmd(chip, CHECK_REG_CMD, SD_TRANSFER, SD_TRANSFER_END,
SD_TRANSFER_END);
rts51x_add_cmd(chip, READ_REG_CMD, PPBUF_BASE2, 0, 0);
if (width == MMC_8BIT_BUS) {
len = 3;
rts51x_add_cmd(chip, READ_REG_CMD, PPBUF_BASE2 + 1, 0, 0);
} else {
len = 2;
}
retval = rts51x_send_cmd(chip, MODE_CR, 100);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
retval = rts51x_get_rsp(chip, len, 100);
if (CHECK_SD_TRANS_FAIL(chip, retval)) {
rts51x_clear_sd_error(chip);
TRACE_RET(chip, STATUS_FAIL);
}
rts51x_read_rsp_buf(chip, 1, buf, 2);
if (width == MMC_8BIT_BUS) {
RTS51X_DEBUGP("BUSTEST_R [8bits]: 0x%02x 0x%02x\n",
buf[0], buf[1]);
if ((buf[0] == 0xAA) && (buf[1] == 0x55)) {
u8 rsp[5];
u32 arg;
if (CHK_MMC_DDR52(sd_card))
arg = 0x03B70600;
else
arg = 0x03B70200;
/* Switch MMC to 8-bit mode */
retval =
sd_send_cmd_get_rsp(chip, SWITCH, arg,
SD_RSP_TYPE_R1b, rsp, 5);
if ((retval == STATUS_SUCCESS)
&& !(rsp[4] & MMC_SWITCH_ERR))
return STATUS_SUCCESS;
}
} else {
RTS51X_DEBUGP("BUSTEST_R [4bits]: 0x%02x\n", buf[0]);
if (buf[0] == 0xA5) {
u8 rsp[5];
u32 arg;
if (CHK_MMC_DDR52(sd_card))
arg = 0x03B70500;
else
arg = 0x03B70100;
/* Switch MMC to 4-bit mode */
retval =
sd_send_cmd_get_rsp(chip, SWITCH, arg,
SD_RSP_TYPE_R1b, rsp, 5);
if ((retval == STATUS_SUCCESS)
&& !(rsp[4] & MMC_SWITCH_ERR))
return STATUS_SUCCESS;
}
}
TRACE_RET(chip, STATUS_FAIL);
}
static int mmc_switch_timing_bus(struct rts51x_chip *chip)
{
struct sd_info *sd_card = &(chip->sd_card);
int retval;
u8 card_type, card_type_mask = 0;
u8 buf[6];
CLR_MMC_HS(sd_card);
RTS51X_DEBUGP("SD/MMC CMD %d\n", SEND_EXT_CSD);
rts51x_init_cmd(chip);
/* SEND_EXT_CSD command */
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_CMD0, 0xFF,
0x40 | SEND_EXT_CSD);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_CMD1, 0xFF, 0);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_CMD2, 0xFF, 0);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_CMD3, 0xFF, 0);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_CMD4, 0xFF, 0);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_BYTE_CNT_L, 0xFF, 0);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_BYTE_CNT_H, 0xFF, 2);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_BLOCK_CNT_L, 0xFF, 1);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_BLOCK_CNT_H, 0xFF, 0);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_CFG2, 0xFF,
SD_CALCULATE_CRC7 | SD_CHECK_CRC16 | SD_NO_WAIT_BUSY_END
| SD_CHECK_CRC7 | SD_RSP_LEN_6);
rts51x_add_cmd(chip, WRITE_REG_CMD, CARD_DATA_SOURCE, 0x01,
PINGPONG_BUFFER);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_TRANSFER, 0xFF,
SD_TM_NORMAL_READ | SD_TRANSFER_START);
rts51x_add_cmd(chip, CHECK_REG_CMD, SD_TRANSFER, SD_TRANSFER_END,
SD_TRANSFER_END);
rts51x_add_cmd(chip, READ_REG_CMD, PPBUF_BASE2 + 196, 0xFF, 0);
rts51x_add_cmd(chip, READ_REG_CMD, PPBUF_BASE2 + 212, 0xFF, 0);
rts51x_add_cmd(chip, READ_REG_CMD, PPBUF_BASE2 + 213, 0xFF, 0);
rts51x_add_cmd(chip, READ_REG_CMD, PPBUF_BASE2 + 214, 0xFF, 0);
rts51x_add_cmd(chip, READ_REG_CMD, PPBUF_BASE2 + 215, 0xFF, 0);
retval = rts51x_send_cmd(chip, MODE_CR, 100);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
retval = rts51x_get_rsp(chip, 6, 1000);
if (CHECK_SD_TRANS_FAIL(chip, retval)) {
if (retval == STATUS_TIMEDOUT) {
rts51x_clear_sd_error(chip);
sd_send_cmd_get_rsp(chip, SEND_STATUS, sd_card->sd_addr,
SD_RSP_TYPE_R1, NULL, 0);
}
TRACE_RET(chip, STATUS_FAIL);
}
rts51x_read_rsp_buf(chip, 0, buf, 6);
if (buf[0] & SD_TRANSFER_ERR) {
sd_send_cmd_get_rsp(chip, SEND_STATUS, sd_card->sd_addr,
SD_RSP_TYPE_R1, NULL, 0);
TRACE_RET(chip, STATUS_FAIL);
}
if (CHK_MMC_SECTOR_MODE(sd_card))
sd_card->capacity =
((u32) buf[5] << 24) | ((u32) buf[4] << 16) |
((u32) buf[3] << 8) | ((u32) buf[2]);
if (CHECK_UHS50(chip))
card_type_mask = 0x07;
else
card_type_mask = 0x03;
card_type = buf[1] & card_type_mask;
if (card_type) {
/* CARD TYPE FIELD = DDR52MHz, 52MHz or 26MHz */
u8 rsp[5];
if (card_type & 0x04)
SET_MMC_DDR52(sd_card);
else if (card_type & 0x02)
SET_MMC_52M(sd_card);
else
SET_MMC_26M(sd_card);
retval =
sd_send_cmd_get_rsp(chip, SWITCH, 0x03B90100,
SD_RSP_TYPE_R1b, rsp, 5);
if ((retval != STATUS_SUCCESS) || (rsp[4] & MMC_SWITCH_ERR))
CLR_MMC_HS(sd_card);
}
sd_choose_proper_clock(chip);
retval = switch_clock(chip, sd_card->sd_clock);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
/* Test Bus Procedure */
if (mmc_test_switch_bus(chip, MMC_8BIT_BUS) == STATUS_SUCCESS) {
SET_MMC_8BIT(sd_card);
chip->card_bus_width[chip->card2lun[SD_CARD]] = 8;
} else if (mmc_test_switch_bus(chip, MMC_4BIT_BUS) == STATUS_SUCCESS) {
SET_MMC_4BIT(sd_card);
chip->card_bus_width[chip->card2lun[SD_CARD]] = 4;
} else {
CLR_MMC_8BIT(sd_card);
CLR_MMC_4BIT(sd_card);
}
return STATUS_SUCCESS;
}
static int reset_mmc(struct rts51x_chip *chip)
{
struct sd_info *sd_card = &(chip->sd_card);
int retval, i = 0, j = 0, k = 0;
u8 rsp[16];
u8 spec_ver = 0;
u8 change_to_ddr52 = 1;
u8 cmd[5];
MMC_DDR_FAIL:
retval = sd_prepare_reset(chip);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
SET_MMC(sd_card);
RTY_MMC_RST:
retval =
sd_send_cmd_get_rsp(chip, GO_IDLE_STATE, 0, SD_RSP_TYPE_R0, NULL,
0);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
do {
{
u8 temp = 0;
rts51x_read_register(chip, CARD_INT_PEND, &temp);
if (temp & SD_INT) {
chip->reset_need_retry = 1;
rts51x_write_register(chip, CARD_INT_PEND,
XD_INT | SD_INT | MS_INT,
XD_INT | SD_INT | MS_INT);
sd_set_reset_fail(chip, MMC_RESET_FAIL);
TRACE_RET(chip, STATUS_FAIL);
}
}
/* CMD 1 */
retval = sd_send_cmd_get_rsp(chip, SEND_OP_COND,
(SUPPORT_VOLTAGE | 0x40000000),
SD_RSP_TYPE_R3, rsp, 5);
if (retval != STATUS_SUCCESS) {
if (monitor_card_cd(chip, SD_CARD) == CD_NOT_EXIST) {
sd_set_reset_fail(chip, MMC_RESET_FAIL);
TRACE_RET(chip, STATUS_FAIL);
}
if (sd_check_err_code(chip, SD_BUSY)
|| sd_check_err_code(chip, SD_TO_ERR)) {
k++;
if (k < 20) {
sd_clr_err_code(chip);
goto RTY_MMC_RST;
} else {
TRACE_RET(chip, STATUS_FAIL);
}
} else {
j++;
if (j < 100) {
sd_clr_err_code(chip);
goto RTY_MMC_RST;
} else {
TRACE_RET(chip, STATUS_FAIL);
}
}
}
wait_timeout(20);
i++;
} while (!(rsp[1] & 0x80) && (i < 100)); /* Not complete power on */
if (i == 100) {
/* Time out */
TRACE_RET(chip, STATUS_FAIL);
}
if ((rsp[1] & 0x60) == 0x40)
SET_MMC_SECTOR_MODE(sd_card);
else
CLR_MMC_SECTOR_MODE(sd_card);
/* CMD 2 */
retval =
sd_send_cmd_get_rsp(chip, ALL_SEND_CID, 0, SD_RSP_TYPE_R2, NULL, 0);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
/* CMD 3 */
sd_card->sd_addr = 0x00100000;
retval =
sd_send_cmd_get_rsp(chip, SET_RELATIVE_ADDR, sd_card->sd_addr,
SD_RSP_TYPE_R6, rsp, 5);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
/* Get CSD register for Calculating Timing,Capacity
* Check CSD to determine as if this is the SD ROM card */
retval = sd_check_csd(chip, 1);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
/* Get MMC Spec_Ver in the CSD register */
spec_ver = (sd_card->raw_csd[0] & 0x3C) >> 2;
/* Select MMC card */
retval = sd_select_card(chip, 1);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
/* Set block length 512 bytes for all block commands */
retval =
sd_send_cmd_get_rsp(chip, SET_BLOCKLEN, 0x200, SD_RSP_TYPE_R1, NULL,
0);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
RTS51X_WRITE_REG(chip, SD_CFG1, SD_CLK_DIVIDE_MASK, SD_CLK_DIVIDE_0);
if (chip->ic_version < 2)
rts51x_write_register(chip, SD30_DRIVE_SEL, SD30_DRIVE_MASK,
0x02);
rts51x_write_register(chip, CARD_DRIVE_SEL, SD20_DRIVE_MASK, DRIVE_8mA);
chip->card_bus_width[chip->card2lun[SD_CARD]] = 1;
if (spec_ver == 4) {
/* MMC 4.x Cards */
(void)mmc_switch_timing_bus(chip);
}
if (CHK_MMC_SECTOR_MODE(sd_card) && (sd_card->capacity == 0))
TRACE_RET(chip, STATUS_FAIL);
if (CHK_MMC_DDR52(sd_card) && change_to_ddr52) {
/* Card is extracted while identifying */
if (monitor_card_cd(chip, SD_CARD) == CD_NOT_EXIST)
TRACE_RET(chip, STATUS_FAIL);
retval = sd_set_init_para(chip);
if (retval != STATUS_SUCCESS) {
CLR_MMC_DDR52(sd_card);
sd_init_power(chip);
change_to_ddr52 = 0;
goto MMC_DDR_FAIL;
}
retval = mmc_ddr_tuning(chip);
if (retval != STATUS_SUCCESS) {
CLR_MMC_DDR52(sd_card);
sd_init_power(chip);
change_to_ddr52 = 0;
goto MMC_DDR_FAIL;
}
if (STATUS_SUCCESS ==
sd_wait_currentstate_dataready(chip, 0x08, 1, 20)) {
cmd[0] = 0x40 | READ_SINGLE_BLOCK;
cmd[1] = 0x00;
cmd[2] = 0x00;
cmd[3] = 0x00;
cmd[4] = 0x00;
if (CHK_MMC_8BIT(sd_card)) {
retval =
sd_read_data(chip, SD_TM_NORMAL_READ, cmd,
5, 512, 1, SD_BUS_WIDTH_8,
NULL, 0, 600);
} else if (CHK_MMC_4BIT(sd_card)) {
retval =
sd_read_data(chip, SD_TM_NORMAL_READ, cmd,
5, 512, 1, SD_BUS_WIDTH_4,
NULL, 0, 600);
} else {
retval =
sd_read_data(chip, SD_TM_NORMAL_READ, cmd,
5, 512, 1, SD_BUS_WIDTH_1,
NULL, 0, 600);
}
if (retval != STATUS_SUCCESS) {
CLR_MMC_DDR52(sd_card);
change_to_ddr52 = 0;
RTS51X_DEBUGP("read lba0 fail,"
"goto SD20 mode\n");
sd_init_power(chip);
goto MMC_DDR_FAIL;
}
}
}
retval = rts51x_get_card_status(chip, &(chip->card_status));
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
if (chip->card_status & SD_WP)
chip->card_wp |= SD_CARD;
return STATUS_SUCCESS;
}
int reset_sd_card(struct rts51x_chip *chip)
{
struct sd_info *sd_card = &(chip->sd_card);
int retval;
int i;
memset(sd_card, 0, sizeof(struct sd_info));
/* Init variables */
sd_card->sd_type = 0;
sd_card->seq_mode = 0;
sd_card->sd_data_buf_ready = 0;
sd_card->capacity = 0;
sd_card->sd_switch_fail = 0;
sd_clear_reset_fail(chip);
enable_card_clock(chip, SD_CARD);
sd_init_power(chip);
chip->reset_need_retry = 0;
for (i = 0; i < 3; i++) {
if (!chip->option.reset_mmc_first) { /* reset sd first */
retval = reset_sd(chip);
if (retval != STATUS_SUCCESS) {
/* Switch SD bus to 3V3 signal */
RTS51X_WRITE_REG(chip, SD_PAD_CTL,
SD_IO_USING_1V8, 0);
if (sd_check_reset_fail(chip, SD_RESET_FAIL))
sd_clear_reset_fail(chip);
else
retval = reset_mmc(chip);
}
} else { /* reset MMC first */
retval = reset_mmc(chip);
if (retval != STATUS_SUCCESS) {
if (sd_check_reset_fail(chip, MMC_RESET_FAIL)) {
sd_clear_reset_fail(chip);
} else {
retval = reset_sd(chip);
if (retval != STATUS_SUCCESS) {
/* Switch SD bus to
* 3V3 signal */
RTS51X_WRITE_REG(chip,
SD_PAD_CTL,
SD_IO_USING_1V8, 0);
}
}
}
}
if ((retval == STATUS_SUCCESS) || (!chip->reset_need_retry)) {
/* if reset success or don't need retry,then break */
break;
}
if (monitor_card_cd(chip, SD_CARD) == CD_NOT_EXIST) {
/* card is extracted */
break;
}
RTS51X_DEBUGP("retry reset sd card,%d\n", i);
chip->reset_need_retry = 0;
}
sd_clear_reset_fail(chip);
chip->reset_need_retry = 0;
if (retval == STATUS_SUCCESS) {
rts51x_init_cmd(chip);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_CFG1, SD_CLK_DIVIDE_MASK,
SD_CLK_DIVIDE_0);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_BYTE_CNT_L, 0xFF, 0);
rts51x_add_cmd(chip, WRITE_REG_CMD, SD_BYTE_CNT_H, 0xFF, 2);
retval = rts51x_send_cmd(chip, MODE_C, 100);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
} else {
chip->capacity[chip->card2lun[SD_CARD]] = sd_card->capacity = 0;
if (chip->option.reset_or_rw_fail_set_pad_drive) {
rts51x_write_register(chip, CARD_DRIVE_SEL,
SD20_DRIVE_MASK, DRIVE_8mA);
}
TRACE_RET(chip, STATUS_FAIL);
}
chip->capacity[chip->card2lun[SD_CARD]] = sd_card->capacity;
if (chip->option.sd_send_status_en) {
sd_card->sd_send_status_en = 1;
} else {
if (sd_card->capacity > 0x20000) { /* 64MB */
sd_card->sd_send_status_en = 0;
} else {
sd_card->sd_send_status_en = 1;
}
}
RTS51X_DEBUGP("sd_card->sd_send_status = %d\n",
sd_card->sd_send_status_en);
retval = sd_set_init_para(chip);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
RTS51X_DEBUGP("sd_card->sd_type = 0x%x\n", sd_card->sd_type);
return STATUS_SUCCESS;
}
#define WAIT_DATA_READY_RTY_CNT 255
static int wait_data_buf_ready(struct rts51x_chip *chip)
{
struct sd_info *sd_card = &(chip->sd_card);
int i, retval;
for (i = 0; i < WAIT_DATA_READY_RTY_CNT; i++) {
if (monitor_card_cd(chip, SD_CARD) == CD_NOT_EXIST)
TRACE_RET(chip, STATUS_FAIL);
sd_card->sd_data_buf_ready = 0;
retval = sd_send_cmd_get_rsp(chip, SEND_STATUS,
sd_card->sd_addr, SD_RSP_TYPE_R1,
NULL, 0);
if (retval != STATUS_SUCCESS)
TRACE_RET(chip, retval);
if (sd_card->sd_data_buf_ready)
return sd_send_cmd_get_rsp(chip, SEND_STATUS,
sd_card->sd_addr,
SD_RSP_TYPE_R1, NULL, 0);
}
sd_set_err_code(chip, SD_TO_ERR);
TRACE_RET(chip, STATUS_FAIL);
}
static void sd_stop_seq_mode(struct rts51x_chip *chip)
{
struct sd_info *sd_card = &(chip->sd_card);
int retval;
if (sd_card->seq_mode) {
retval = sd_switch_clock(chip);
if (retval != STATUS_SUCCESS)
return;
retval = sd_send_cmd_get_rsp(chip, STOP_TRANSMISSION, 0,
SD_RSP_TYPE_R1b, NULL, 0);
if (retval != STATUS_SUCCESS)
sd_set_err_code(chip, SD_STS_ERR);
sd_card->seq_mode = 0;
rts51x_ep0_write_register(chip, MC_FIFO_CTL, FIFO_FLUSH,
FIFO_FLUSH);
}
}
static inline int sd_auto_tune_clock(struct rts51x_chip *chip)
{
struct sd_info *sd_card = &(chip->sd_card);
int retval;