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authorMika Westerberg <mika.westerberg@linux.intel.com>2016-09-26 15:19:50 +0300
committerMark Brown <broonie@kernel.org>2016-09-26 19:11:14 +0300
commit99f499cd650405bbe6a9b5386d4b11ee81514fb7 (patch)
tree48882d1cafee7da91e34946f6666104d21b0ff4a /drivers/spi/spi-pxa2xx.h
parent7c7289a40425d48bbfcaacc454a8caf5b47f63b0 (diff)
downloadlinux-99f499cd650405bbe6a9b5386d4b11ee81514fb7.tar.xz
spi: pxa2xx: Add support for GPIO descriptor chip selects
The driver uses custom chip_info coming from platform data for chip selects implemented as GPIOs. If the system lacks board files setting up the platform data, it is not possible to use GPIOs as chip selects. This adds support for GPIO descriptors so that regardless of the underlying firmware interface (DT, ACPI or platform data) the driver can request GPIOs used as chip selects and configure them accordingly. The custom chip_info GPIO support is still left there to make sure the existing systems keep working as expected. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-pxa2xx.h')
-rw-r--r--drivers/spi/spi-pxa2xx.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/spi/spi-pxa2xx.h b/drivers/spi/spi-pxa2xx.h
index ae3b15ff6fb2..ce31b8199bb3 100644
--- a/drivers/spi/spi-pxa2xx.h
+++ b/drivers/spi/spi-pxa2xx.h
@@ -66,6 +66,9 @@ struct driver_data {
void (*cs_control)(u32 command);
void __iomem *lpss_base;
+
+ /* GPIOs for chip selects */
+ struct gpio_desc **cs_gpiods;
};
struct chip_data {