/**
* spi_flash_probe_slave() - Probe for a SPI flash device on a bus
*
* @flashp: Pointer to place to put flash info, which may be NULL if the
* space should be allocated
*/
static int spi_flash_probe_slave(struct spi_flash *flash)
{
struct spi_slave *spi = flash->spi;
int ret;
/* Setup spi_slave */
if (!spi) {
printf("SF: Failed to set up slave\n");
return -ENODEV;
}
/* Claim spi bus */
ret = spi_claim_bus(spi);
if (ret) {
debug("SF: Failed to claim SPI bus: %d\n", ret);
return ret;
}
ret = spi_nor_scan(flash);
if (ret)
goto err_read_id;
#ifdef CONFIG_SPI_FLASH_MTD
ret = spi_flash_mtd_register(flash);
#endif
err_read_id:
spi_release_bus(spi);
return ret;
}
/**
* spi_flash_probe_slave() - Probe for a SPI flash device on a bus
*
* @flashp: Pointer to place to put flash info, which may be NULL if the
* space should be allocated
*/
static int spi_flash_probe_slave(struct spi_flash *flash)
{
struct spi_slave *spi = flash->spi;
u8 mode_rx, e_rd_cmd;
int ret;
/* Setup spi_slave */
if (!spi) {
printf("SF: Failed to set up slave\n");
return -ENODEV;
}
/* Convert SPI mode_rx and mode to SPI flash read commands */
mode_rx = spi->mode_rx;
if (mode_rx & SPI_RX_QUAD) {
e_rd_cmd = RD_NORM | QUAD_OUTPUT_FAST;
if (spi->mode & SPI_TX_QUAD)
e_rd_cmd |= QUAD_IO_FAST;
} else if (mode_rx & SPI_RX_DUAL) {
e_rd_cmd = RD_NORM | DUAL_OUTPUT_FAST;
if (spi->mode & SPI_TX_DUAL)
e_rd_cmd |= DUAL_IO_FAST;
} else if ((mode_rx & (SPI_RX_SLOW | SPI_RX_FAST)) == SPI_RX_SLOW) {
e_rd_cmd = ARRAY_SLOW;
} else {
e_rd_cmd = RD_NORM;
}
/* Claim spi bus */
ret = spi_claim_bus(spi);
if (ret) {
debug("SF: Failed to claim SPI bus: %d\n", ret);
return ret;
}
ret = spi_flash_scan(flash, e_rd_cmd);
if (ret)
goto err_read_id;
#ifdef CONFIG_SPI_FLASH_MTD
ret = spi_flash_mtd_register(flash);
#endif
err_read_id:
spi_release_bus(spi);
return ret;
}
