int mmc_send_app_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr)
{
struct mmc_command cmd;
int i, err = 0;
BUG_ON(!host);
memset(&cmd, 0, sizeof(struct mmc_command));
cmd.opcode = SD_APP_OP_COND;
cmd.arg = ocr;
cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR;
for (i = 100; i; i--) {
err = mmc_wait_for_app_cmd(host, NULL, &cmd, MMC_CMD_RETRIES);
if (err != MMC_ERR_NONE)
break;
if (cmd.resp[0] & MMC_CARD_BUSY || ocr == 0)
break;
err = MMC_ERR_TIMEOUT;
mmc_delay(10);
}
if (rocr)
*rocr = cmd.resp[0];
return err;
}
int mmc_app_set_bus_width(struct mmc_card *card, int width)
{
int err;
struct mmc_command cmd = {0};
BUG_ON(!card);
BUG_ON(!card->host);
cmd.opcode = SD_APP_SET_BUS_WIDTH;
cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
switch (width) {
case MMC_BUS_WIDTH_1:
cmd.arg = SD_BUS_WIDTH_1;
break;
case MMC_BUS_WIDTH_4:
cmd.arg = SD_BUS_WIDTH_4;
break;
default:
return -EINVAL;
}
err = mmc_wait_for_app_cmd(card->host, card, &cmd, MMC_CMD_RETRIES);
if (err)
return err;
return 0;
}
int mmc_app_set_bus_width(struct mmc_card *card, int width)
{
int err;
struct mmc_command cmd;
BUG_ON(!card);
BUG_ON(!card->host);
memset(&cmd, 0, sizeof(struct mmc_command));
cmd.opcode = SD_APP_SET_BUS_WIDTH;
cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
switch (width) {
case MMC_BUS_WIDTH_1:
cmd.arg = SD_BUS_WIDTH_1;
break;
case MMC_BUS_WIDTH_4:
cmd.arg = SD_BUS_WIDTH_4;
break;
default:
return MMC_ERR_INVALID;
}
err = mmc_wait_for_app_cmd(card->host, card, &cmd, MMC_CMD_RETRIES);
if (err != MMC_ERR_NONE)
return err;
return MMC_ERR_NONE;
}
static int
mmc_app_send_scr(struct mmc_softc *sc, uint16_t rca, uint32_t *rawscr)
{
int err;
struct mmc_command cmd;
struct mmc_data data;
memset(&cmd, 0, sizeof(struct mmc_command));
memset(&data, 0, sizeof(struct mmc_data));
memset(rawscr, 0, 8);
cmd.opcode = ACMD_SEND_SCR;
cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
cmd.arg = 0;
cmd.data = &data;
data.data = rawscr;
data.len = 8;
data.flags = MMC_DATA_READ;
err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES);
rawscr[0] = be32toh(rawscr[0]);
rawscr[1] = be32toh(rawscr[1]);
return (err);
}
static int
mmc_send_app_op_cond(struct mmc_softc *sc, uint32_t ocr, uint32_t *rocr)
{
struct mmc_command cmd;
int err = MMC_ERR_NONE, i;
memset(&cmd, 0, sizeof(cmd));
cmd.opcode = ACMD_SD_SEND_OP_COND;
cmd.arg = ocr;
cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR;
cmd.data = NULL;
for (i = 0; i < 100; i++) {
err = mmc_wait_for_app_cmd(sc, 0, &cmd, CMD_RETRIES);
if (err != MMC_ERR_NONE)
break;
if ((cmd.resp[0] & MMC_OCR_CARD_BUSY) ||
(ocr & MMC_OCR_VOLTAGE) == 0)
break;
err = MMC_ERR_TIMEOUT;
mmc_ms_delay(10);
}
if (rocr && err == MMC_ERR_NONE)
*rocr = cmd.resp[0];
return (err);
}
static int
mmc_app_sd_status(struct mmc_softc *sc, uint16_t rca, uint32_t *rawsdstatus)
{
int err, i;
struct mmc_command cmd;
struct mmc_data data;
memset(&cmd, 0, sizeof(struct mmc_command));
memset(&data, 0, sizeof(struct mmc_data));
memset(rawsdstatus, 0, 64);
cmd.opcode = ACMD_SD_STATUS;
cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
cmd.arg = 0;
cmd.data = &data;
data.data = rawsdstatus;
data.len = 64;
data.flags = MMC_DATA_READ;
err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES);
for (i = 0; i < 16; i++)
rawsdstatus[i] = be32toh(rawsdstatus[i]);
return (err);
}
static int mmc_select_card(struct mmc_host *host, struct mmc_card *card)
{
int err;
struct mmc_command cmd;
BUG_ON(host->card_busy == NULL);
if (host->card_selected == card)
return MMC_ERR_NONE;
host->card_selected = card;
cmd.opcode = MMC_SELECT_CARD;
cmd.arg = card->rca << 16;
// cmd.flags = MMC_RSP_R1;
cmd.flags = MMCSD_RSP1;
err = mmc_wait_for_cmd(host, &cmd, CMD_RETRIES);
if (err != MMC_ERR_NONE)
return err;
/*
* Default bus width is 1 bit.
*/
host->ios.bus_width = MMC_BUS_WIDTH_1;
/*
* We can only change the bus width of the selected
* card so therefore we have to put the handling
* here.
*/
if (host->caps & MMC_CAP_4_BIT_DATA) {
/*
* The card is in 1 bit mode by default so
* we only need to change if it supports the
* wider version.
*/
if (mmc_card_sd(card) &&
(card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) {
struct mmc_command cmd;
cmd.opcode = SD_APP_SET_BUS_WIDTH;
cmd.arg = SD_BUS_WIDTH_4;
// cmd.flags = MMC_RSP_R1;
cmd.flags = MMCSD_RSP1;
err = mmc_wait_for_app_cmd(host, card->rca, &cmd,
CMD_RETRIES);
if (err != MMC_ERR_NONE)
return err;
host->ios.bus_width = MMC_BUS_WIDTH_4;
}
}
host->ops->set_ios(host, &host->ios);
return MMC_ERR_NONE;
}
int mmc_send_app_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr)
{
struct mmc_command cmd = {0};
int i, err = 0;
BUG_ON(!host);
cmd.opcode = SD_APP_OP_COND;
if (mmc_host_is_spi(host))
cmd.arg = ocr & (1 << 30); /* SPI only defines one bit */
else
cmd.arg = ocr;
cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R3 | MMC_CMD_BCR;
for (i = 200; i; i--) {
err = mmc_wait_for_app_cmd(host, NULL, &cmd, MMC_CMD_RETRIES);
if (err)
break;
/* if we're just probing, do a single pass */
if (ocr == 0)
break;
/* otherwise wait until reset completes */
if (mmc_host_is_spi(host)) {
if (!(cmd.resp[0] & R1_SPI_IDLE))
break;
} else {
if (cmd.resp[0] & MMC_CARD_BUSY)
break;
}
err = -ETIMEDOUT;
mmc_delay(10);
}
if (rocr && !mmc_host_is_spi(host))
*rocr = cmd.resp[0];
if (i == 0 && err == -ETIMEDOUT) {
pr_info("[T][ARM]Event:0x4E Info:0xE96E0069%08X\n", cmd.resp[0]);
}
return err;
}
int mmc_send_app_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr)
{
struct mmc_command cmd = {0};
int i, err = 0;
BUG_ON(!host);
cmd.opcode = SD_APP_OP_COND;
if (mmc_host_is_spi(host))
cmd.arg = ocr & (1 << 30);
else
cmd.arg = ocr;
cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R3 | MMC_CMD_BCR;
for (i = 100; i; i--) {
err = mmc_wait_for_app_cmd(host, NULL, &cmd, MMC_CMD_RETRIES);
if (err)
break;
if (ocr == 0)
break;
if (mmc_host_is_spi(host)) {
if (!(cmd.resp[0] & R1_SPI_IDLE))
break;
} else {
if (cmd.resp[0] & MMC_CARD_BUSY)
break;
}
err = -ETIMEDOUT;
mmc_delay(10);
}
if(err)
printk(KERN_ERR "%s: ACMD 41 init process fail : resp : %#x\n",
mmc_hostname(host), cmd.resp[0]);
if (rocr && !mmc_host_is_spi(host))
*rocr = cmd.resp[0];
return err;
}
static int
mmc_set_card_bus_width(struct mmc_softc *sc, uint16_t rca, int width)
{
struct mmc_command cmd;
int err;
uint8_t value;
if (mmcbr_get_mode(sc->dev) == mode_sd) {
memset(&cmd, 0, sizeof(struct mmc_command));
cmd.opcode = ACMD_SET_BUS_WIDTH;
cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
switch (width) {
case bus_width_1:
cmd.arg = SD_BUS_WIDTH_1;
break;
case bus_width_4:
cmd.arg = SD_BUS_WIDTH_4;
break;
default:
return (MMC_ERR_INVALID);
}
err = mmc_wait_for_app_cmd(sc, rca, &cmd, CMD_RETRIES);
} else {
switch (width) {
case bus_width_1:
value = EXT_CSD_BUS_WIDTH_1;
break;
case bus_width_4:
value = EXT_CSD_BUS_WIDTH_4;
break;
case bus_width_8:
value = EXT_CSD_BUS_WIDTH_8;
break;
default:
return (MMC_ERR_INVALID);
}
err = mmc_switch(sc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH,
value);
}
return (err);
}
