diff options
| author | Jagannadha Sutradharudu Teki <jaganna@xilinx.com> | 2013-12-30 22:16:23 +0530 |
|---|---|---|
| committer | Jagannadha Sutradharudu Teki <jaganna@xilinx.com> | 2014-01-11 16:51:41 +0530 |
| commit | 9f4322fd2281d9736b9fd208a5e2ecaec49e21e0 (patch) | |
| tree | abeb3b311527b22b8a32097fe499ddbdcc88f2e4 /drivers/mtd/spi/sf_probe.c | |
| parent | 5bb30f1a40697e90945e6b80b9517bc7d44b94cb (diff) | |
sf: Divide flash register ops from QEB code
QEB code comprises of couple of flash register read/write operations,
this patch moved flash register operations on to sf_op
Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
Diffstat (limited to 'drivers/mtd/spi/sf_probe.c')
| -rw-r--r-- | drivers/mtd/spi/sf_probe.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/drivers/mtd/spi/sf_probe.c b/drivers/mtd/spi/sf_probe.c index 88d1d0a88e..6b59f2a717 100644 --- a/drivers/mtd/spi/sf_probe.c +++ b/drivers/mtd/spi/sf_probe.c @@ -28,6 +28,50 @@ static u8 spi_read_cmds_array[] = { CMD_READ_QUAD_IO_FAST, }; +#ifdef CONFIG_SPI_FLASH_MACRONIX +static int spi_flash_set_qeb_mxic(struct spi_flash *flash) +{ + u8 qeb_status; + int ret; + + ret = spi_flash_cmd_read_status(flash, &qeb_status); + if (ret < 0) + return ret; + + if (qeb_status & STATUS_QEB_MXIC) { + debug("SF: mxic: QEB is already set\n"); + } else { + ret = spi_flash_cmd_write_status(flash, STATUS_QEB_MXIC); + if (ret < 0) + return ret; + } + + return ret; +} +#endif + +#if defined(CONFIG_SPI_FLASH_SPANSION) || defined(CONFIG_SPI_FLASH_WINBOND) +static int spi_flash_set_qeb_winspan(struct spi_flash *flash) +{ + u8 qeb_status; + int ret; + + ret = spi_flash_cmd_read_config(flash, &qeb_status); + if (ret < 0) + return ret; + + if (qeb_status & STATUS_QEB_WINSPAN) { + debug("SF: winspan: QEB is already set\n"); + } else { + ret = spi_flash_cmd_write_config(flash, STATUS_QEB_WINSPAN); + if (ret < 0) + return ret; + } + + return ret; +} +#endif + static int spi_flash_set_qeb(struct spi_flash *flash, u8 idcode0) { switch (idcode0) { |