diff options
| author | Poddar, Sourav <sourav.poddar@ti.com> | 2013-10-07 15:53:01 +0530 |
|---|---|---|
| committer | Jagannadha Sutradharudu Teki <jaganna@xilinx.com> | 2013-10-07 17:55:51 +0530 |
| commit | 004f15b6000e220b74433b190e60805ce8776d92 (patch) | |
| tree | 33fdceed2d361fffdc0d9f8f7f0282b425c0d978 /drivers/mtd/spi/sf_ops.c | |
| parent | 62d206dc3126914f187cfb72e8a7c6cf84c19b7c (diff) | |
| download | talos-obmc-uboot-004f15b6000e220b74433b190e60805ce8776d92.tar.gz talos-obmc-uboot-004f15b6000e220b74433b190e60805ce8776d92.zip | |
sf: Add memory mapped read support
Qspi controller can have a memory mapped port which can be used for
data read. Added support to enable memory mapped port read.
This patch enables the following:
- It enables exchange of memory map address between mtd and qspi
through the introduction of "memory_map" flag.
- Add support to communicate to the driver that memory mapped
transfer is to be started through introduction of new flags like
"SPI_XFER_MEM_MAP" and "SPI_XFER_MEM_MAP_END".
This will enable the spi controller to do memory mapped configurations
if required.
Signed-off-by: Sourav Poddar <sourav.poddar@ti.com>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Diffstat (limited to 'drivers/mtd/spi/sf_ops.c')
| -rw-r--r-- | drivers/mtd/spi/sf_ops.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/mtd/spi/sf_ops.c b/drivers/mtd/spi/sf_ops.c index c009af5c20..2396e2272f 100644 --- a/drivers/mtd/spi/sf_ops.c +++ b/drivers/mtd/spi/sf_ops.c @@ -269,7 +269,9 @@ int spi_flash_cmd_read_ops(struct spi_flash *flash, u32 offset, /* Handle memory-mapped SPI */ if (flash->memory_map) { + spi_xfer(flash->spi, 0, NULL, NULL, SPI_XFER_MMAP); memcpy(data, flash->memory_map + offset, len); + spi_xfer(flash->spi, 0, NULL, NULL, SPI_XFER_MMAP_END); return 0; } |
