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authorRoland Stigge <stigge@antcom.de>2012-08-22 15:49:17 +0200
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-08-22 20:00:44 +0100
commitf6f46de1063c8829713cd9d5b960dd8cb66cde8b (patch)
tree3367d20d24223f9e149188eb2997b66111237633 /include/linux/amba
parent3ce8859e2e72713d3619285cab609d05c3591fc4 (diff)
downloadvexpress-lsk-f6f46de1063c8829713cd9d5b960dd8cb66cde8b.tar.gz
spi/pl022: Add chip select handling via GPIO
This patch adds the ability for the driver to control the chip select directly. This enables independence from cs_control callbacks. Configurable via platform_data, to be extended as DT in the following patch. Based on the initial patch by Alexandre Pereira da Silva <aletes.xgr@gmail.com> Signed-off-by: Roland Stigge <stigge@antcom.de> Acked-by: Alexandre Pereira da Silva <aletes.xgr@gmail.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'include/linux/amba')
-rw-r--r--include/linux/amba/pl022.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/amba/pl022.h b/include/linux/amba/pl022.h
index fe1d7b283cb..854b7294f6c 100644
--- a/include/linux/amba/pl022.h
+++ b/include/linux/amba/pl022.h
@@ -244,6 +244,7 @@ struct dma_chan;
* indicates no delay and the device will be suspended immediately.
* @rt: indicates the controller should run the message pump with realtime
* priority to minimise the transfer latency on the bus.
+ * @chipselects: list of <num_chipselects> chip select gpios
*/
struct pl022_ssp_controller {
u16 bus_id;
@@ -254,6 +255,7 @@ struct pl022_ssp_controller {
void *dma_tx_param;
int autosuspend_delay;
bool rt;
+ int *chipselects;
};
/**