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MLK-9817 spi: imx: convert all clk_enable to clk_prepare_enable 

This is done in preperation for low power mode. Convert all clk_enable
to clk_prepare_enable and clk_disable to clk_disable_unprepare. Make sure
PLL3 power down when entering low power mode.

Signed-off-by: Bai Ping <b51503@freescale.com>
(cherry picked from commit 1808b31fdae576e775159a05cde9b45e404bb6e2)
pull/10/head
Bai Ping 2014-11-08 21:35:26 +08:00 committed by Jason Liu
parent 0eeb6249cb
commit 52fd34e0d5
1 changed files with 7 additions and 7 deletions
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14
drivers/spi/spi-imx.c
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@ -1296,13 +1296,13 @@ 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);
ret = clk_prepare_enable(spi_imx->clk_per);
if (ret)
return ret;
ret = clk_enable(spi_imx->clk_ipg);
ret = clk_prepare_enable(spi_imx->clk_ipg);
if (ret) {
clk_disable(spi_imx->clk_per);
clk_disable_unprepare(spi_imx->clk_per);
return ret;
}
@ -1314,8 +1314,8 @@ 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);
clk_disable_unprepare(spi_imx->clk_ipg);
clk_disable_unprepare(spi_imx->clk_per);
return 0;
}
@ -1474,8 +1474,8 @@ 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);
clk_disable_unprepare(spi_imx->clk_ipg);
clk_disable_unprepare(spi_imx->clk_per);
return ret;
out_clk_put: