korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-25 13:14:07 +08:00
Code Issues Packages Projects Releases Wiki Activity

Merge remote-tracking branch 'spi/fix/xilinx' into spi-linus

Browse Source
This commit is contained in:
Mark Brown 2013-07-15 11:46:16 +01:00
commit 70f092a585
1 changed files with 16 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/spi/spi-xilinx.c
View File

@ -233,6 +233,21 @@ static int xilinx_spi_setup_transfer(struct spi_device *spi,
return 0;
}
static int xilinx_spi_setup(struct spi_device *spi)
{
/* always return 0, we can not check the number of bits.
* There are cases when SPI setup is called before any driver is
* there, in that case the SPI core defaults to 8 bits, which we
* do not support in some cases. But if we return an error, the
* SPI device would not be registered and no driver can get hold of it
* When the driver is there, it will call SPI setup again with the
* correct number of bits per transfer.
* If a driver setups with the wrong bit number, it will fail when
* it tries to do a transfer
*/
return 0;
}
static void xilinx_spi_fill_tx_fifo(struct xilinx_spi *xspi)
{
u8 sr;
@ -360,6 +375,7 @@ struct spi_master *xilinx_spi_init(struct device *dev, struct resource *mem,
xspi->bitbang.chipselect = xilinx_spi_chipselect;
xspi->bitbang.setup_transfer = xilinx_spi_setup_transfer;
xspi->bitbang.txrx_bufs = xilinx_spi_txrx_bufs;
xspi->bitbang.master->setup = xilinx_spi_setup;
init_completion(&xspi->done);
if (!request_mem_region(mem->start, resource_size(mem),