summaryrefslogtreecommitdiffstats
path: root/drivers/spi
diff options
context:
space:
mode:
authorMark Brown <broonie@linaro.org>2013-10-25 09:51:29 +0100
committerMark Brown <broonie@linaro.org>2013-10-25 09:51:29 +0100
commitc25b2c9eb36502f81c59df764074a475249a4550 (patch)
tree9022af69f814d891419604978ff65330871236b6 /drivers/spi
parentffd6dd3eaa1e6a0d454c08efcc996ea7014aa1d2 (diff)
parent9e556dcc55774c9a1032f32baa0e5cfafede8b70 (diff)
downloadlinux-c25b2c9eb36502f81c59df764074a475249a4550.tar.bz2
Merge remote-tracking branch 'spi/topic/imx' into spi-next
Diffstat (limited to 'drivers/spi')
-rw-r--r--drivers/spi/spi-imx.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c
index 02d9f468b2b6..b80f2f70fef7 100644
--- a/drivers/spi/spi-imx.c
+++ b/drivers/spi/spi-imx.c
@@ -749,6 +749,35 @@ static void spi_imx_cleanup(struct spi_device *spi)
{
}
+static int
+spi_imx_prepare_message(struct spi_master *master, struct spi_message *msg)
+{
+ struct spi_imx_data *spi_imx = spi_master_get_devdata(master);
+ int ret;
+
+ ret = clk_enable(spi_imx->clk_per);
+ if (ret)
+ return ret;
+
+ ret = clk_enable(spi_imx->clk_ipg);
+ if (ret) {
+ clk_disable(spi_imx->clk_per);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int
+spi_imx_unprepare_message(struct spi_master *master, struct spi_message *msg)
+{
+ struct spi_imx_data *spi_imx = spi_master_get_devdata(master);
+
+ clk_disable(spi_imx->clk_ipg);
+ clk_disable(spi_imx->clk_per);
+ return 0;
+}
+
static int spi_imx_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
@@ -810,6 +839,8 @@ static int spi_imx_probe(struct platform_device *pdev)
spi_imx->bitbang.txrx_bufs = spi_imx_transfer;
spi_imx->bitbang.master->setup = spi_imx_setup;
spi_imx->bitbang.master->cleanup = spi_imx_cleanup;
+ spi_imx->bitbang.master->prepare_message = spi_imx_prepare_message;
+ spi_imx->bitbang.master->unprepare_message = spi_imx_unprepare_message;
spi_imx->bitbang.master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH;
init_completion(&spi_imx->xfer_done);
@@ -872,6 +903,8 @@ static int spi_imx_probe(struct platform_device *pdev)
dev_info(&pdev->dev, "probed\n");
+ clk_disable(spi_imx->clk_ipg);
+ clk_disable(spi_imx->clk_per);
return ret;
out_clk_put: