static int mmc_spi_request(struct mci_host *mci, struct mci_cmd *cmd, struct mci_data *data)
{
struct mmc_spi_host *host = to_spi_host(mci);
uint8_t r1;
int i;
int ret = 0;
dev_dbg(host->dev, "%s : CMD%02d, RESP %s, ARG 0x%X\n", __func__,
cmd->cmdidx, maptype(cmd), cmd->cmdarg);
r1 = mmc_spi_command_send(host, cmd);
cmd->response[0] = r1;
if (r1 == 0xff) { /* no response */
ret = -ETIME;
goto done;
} else if (r1 & R1_SPI_COM_CRC) {
ret = -ECOMM;
goto done;
} else if (r1 & ~R1_SPI_IDLE) { /* other errors */
ret = -ETIME;
goto done;
} else if (cmd->resp_type == MMC_RSP_R2) {
r1 = mmc_spi_readdata(host, cmd->response, 1, 16);
for (i = 0; i < 4; i++)
cmd->response[i] = be32_to_cpu(cmd->response[i]);
dev_dbg(host->dev, "MMC_RSP_R2 -> %x %x %x %x\n", cmd->response[0], cmd->response[1],
cmd->response[2], cmd->response[3]);
} else if (!data) {
switch (cmd->cmdidx) {
case SD_CMD_SEND_IF_COND:
case MMC_CMD_SPI_READ_OCR:
mmc_spi_readbytes(host, 4, cmd->response);
cmd->response[0] = be32_to_cpu(cmd->response[0]);
break;
}
} else {
if (data->flags == MMC_DATA_READ) {
dev_dbg(host->dev, "%s : DATA READ, %x blocks, bsize = 0x%X\n", __func__,
data->blocks, data->blocksize);
r1 = mmc_spi_readdata(host, data->dest,
data->blocks, data->blocksize);
} else if (data->flags == MMC_DATA_WRITE) {
dev_dbg(host->dev, "%s : DATA WRITE, %x blocks, bsize = 0x%X\n", __func__,
data->blocks, data->blocksize);
r1 = mmc_spi_writedata(host, data->src,
data->blocks, data->blocksize,
(cmd->cmdidx == MMC_CMD_WRITE_MULTIPLE_BLOCK));
}
if (r1 & R1_SPI_COM_CRC)
ret = -ECOMM;
else if (r1)
ret = -ETIME;
}
done:
mmc_cs_off(host);
return ret;
return 0;
}
static int mmc_spi_request(struct mmc *mmc, struct mmc_cmd *cmd,
struct mmc_data *data)
{
struct spi_slave *spi = mmc->priv;
u8 r1;
int i;
int ret = 0;
debug("%s:cmd%d %x %x\n", __func__,
cmd->cmdidx, cmd->resp_type, cmd->cmdarg);
spi_claim_bus(spi);
spi_cs_activate(spi);
r1 = mmc_spi_sendcmd(mmc, cmd->cmdidx, cmd->cmdarg);
if (r1 == 0xff) { /* no response */
ret = NO_CARD_ERR;
goto done;
} else if (r1 & R1_SPI_COM_CRC) {
ret = COMM_ERR;
goto done;
} else if (r1 & ~R1_SPI_IDLE) { /* other errors */
ret = TIMEOUT;
goto done;
} else if (cmd->resp_type == MMC_RSP_R2) {
r1 = mmc_spi_readdata(mmc, cmd->response, 1, 16);
for (i = 0; i < 4; i++)
cmd->response[i] = be32_to_cpu(cmd->response[i]);
debug("r128 %x %x %x %x\n", cmd->response[0], cmd->response[1],
cmd->response[2], cmd->response[3]);
} else if (!data) {
switch (cmd->cmdidx) {
case SD_CMD_APP_SEND_OP_COND:
case MMC_CMD_SEND_OP_COND:
cmd->response[0] = (r1 & R1_SPI_IDLE) ? 0 : OCR_BUSY;
break;
case SD_CMD_SEND_IF_COND:
case MMC_CMD_SPI_READ_OCR:
spi_xfer(spi, 4 * 8, NULL, cmd->response, 0);
cmd->response[0] = be32_to_cpu(cmd->response[0]);
debug("r32 %x\n", cmd->response[0]);
break;
case MMC_CMD_SEND_STATUS:
spi_xfer(spi, 1 * 8, NULL, cmd->response, 0);
cmd->response[0] = (cmd->response[0] & 0xff) ?
MMC_STATUS_ERROR : MMC_STATUS_RDY_FOR_DATA;
break;
}
} else {
debug("%s:data %x %x %x\n", __func__,
data->flags, data->blocks, data->blocksize);
if (data->flags == MMC_DATA_READ)
r1 = mmc_spi_readdata(mmc, data->dest,
data->blocks, data->blocksize);
else if (data->flags == MMC_DATA_WRITE)
r1 = mmc_spi_writedata(mmc, data->src,
data->blocks, data->blocksize,
(cmd->cmdidx == MMC_CMD_WRITE_MULTIPLE_BLOCK));
if (r1 & R1_SPI_COM_CRC)
ret = COMM_ERR;
else if (r1) /* other errors */
ret = TIMEOUT;
}
done:
spi_cs_deactivate(spi);
spi_release_bus(spi);
return ret;
}
