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| author | Hung-ying Tyan <tyanh@chromium.org> | 2013-05-15 18:27:30 +0800 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2013-06-26 10:13:24 -0400 |
| commit | f3424c554c572761f35b00988deb8ed35d1870e3 (patch) | |
| tree | bd4d66a127bb045d1c4968fde86d3c25e1f0ddb1 /drivers/spi | |
| parent | 78764a4e11dd40005ba2b36848de407070ccc1a7 (diff) | |
| download | u-boot-imx-f3424c554c572761f35b00988deb8ed35d1870e3.zip u-boot-imx-f3424c554c572761f35b00988deb8ed35d1870e3.tar.gz u-boot-imx-f3424c554c572761f35b00988deb8ed35d1870e3.tar.bz2 | |
cros: exynos: add SPI support for cros_ec
This patch adds SPI support for carrying out the cros_ec protocol.
Signed-off-by: Hung-ying Tyan <tyanh@chromium.org>
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/exynos_spi.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/spi/exynos_spi.c b/drivers/spi/exynos_spi.c index 01378d0..7a25a35 100644 --- a/drivers/spi/exynos_spi.c +++ b/drivers/spi/exynos_spi.c @@ -465,6 +465,28 @@ static int process_nodes(const void *blob, int node_list[], int count) } #endif +/** + * Set up a new SPI slave for an fdt node + * + * @param blob Device tree blob + * @param node SPI peripheral node to use + * @return 0 if ok, -1 on error + */ +struct spi_slave *spi_setup_slave_fdt(const void *blob, int node, + unsigned int cs, unsigned int max_hz, unsigned int mode) +{ + struct spi_bus *bus; + unsigned int i; + + for (i = 0, bus = spi_bus; i < bus_count; i++, bus++) { + if (bus->node == node) + return spi_setup_slave(i, cs, max_hz, mode); + } + + debug("%s: Failed to find bus node %d\n", __func__, node); + return NULL; +} + /* Sadly there is no error return from this function */ void spi_init(void) { |