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authorLee Jones <lee.jones@linaro.org>2016-06-07 13:19:00 +0200
committerPatrice Chotard <patrice.chotard@st.com>2016-07-12 13:22:55 +0200
commitcf4b5ceb95b1e8842bc4f061a8ba8c395b5dbc6d (patch)
tree5ffb1c9cfa52613cea57d30b77991dbbbc147cae /drivers/spi
parentf221d8100e366e8373096ba7ffc36cf42d504e82 (diff)
downloadlinux-cf4b5ceb95b1e8842bc4f061a8ba8c395b5dbc6d.tar.bz2
spi: st-ssc4: Remove 'no clocking' hack
Due to the newly upstreamed 'critical clocks' API we can now safely handle clocking in the SPI and I2C drivers without fear of catastrophically crippling the running platform. Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/spi')
-rw-r--r--drivers/spi/spi-st-ssc4.c36
1 files changed, 5 insertions, 31 deletions
diff --git a/drivers/spi/spi-st-ssc4.c b/drivers/spi/spi-st-ssc4.c
index d5adf9f31602..a56eca0e95a6 100644
--- a/drivers/spi/spi-st-ssc4.c
+++ b/drivers/spi/spi-st-ssc4.c
@@ -68,32 +68,6 @@ struct spi_st {
struct completion done;
};
-static int spi_st_clk_enable(struct spi_st *spi_st)
-{
- /*
- * Current platforms use one of the core clocks for SPI and I2C.
- * If we attempt to disable the clock, the system will hang.
- *
- * TODO: Remove this when platform supports power domains.
- */
- return 0;
-
- return clk_prepare_enable(spi_st->clk);
-}
-
-static void spi_st_clk_disable(struct spi_st *spi_st)
-{
- /*
- * Current platforms use one of the core clocks for SPI and I2C.
- * If we attempt to disable the clock, the system will hang.
- *
- * TODO: Remove this when platform supports power domains.
- */
- return;
-
- clk_disable_unprepare(spi_st->clk);
-}
-
/* Load the TX FIFO */
static void ssc_write_tx_fifo(struct spi_st *spi_st)
{
@@ -349,7 +323,7 @@ static int spi_st_probe(struct platform_device *pdev)
goto put_master;
}
- ret = spi_st_clk_enable(spi_st);
+ ret = clk_prepare_enable(spi_st->clk);
if (ret)
goto put_master;
@@ -408,7 +382,7 @@ static int spi_st_probe(struct platform_device *pdev)
return 0;
clk_disable:
- spi_st_clk_disable(spi_st);
+ clk_disable_unprepare(spi_st->clk);
put_master:
spi_master_put(master);
return ret;
@@ -419,7 +393,7 @@ static int spi_st_remove(struct platform_device *pdev)
struct spi_master *master = platform_get_drvdata(pdev);
struct spi_st *spi_st = spi_master_get_devdata(master);
- spi_st_clk_disable(spi_st);
+ clk_disable_unprepare(spi_st->clk);
pinctrl_pm_select_sleep_state(&pdev->dev);
@@ -435,7 +409,7 @@ static int spi_st_runtime_suspend(struct device *dev)
writel_relaxed(0, spi_st->base + SSC_IEN);
pinctrl_pm_select_sleep_state(dev);
- spi_st_clk_disable(spi_st);
+ clk_disable_unprepare(spi_st->clk);
return 0;
}
@@ -446,7 +420,7 @@ static int spi_st_runtime_resume(struct device *dev)
struct spi_st *spi_st = spi_master_get_devdata(master);
int ret;
- ret = spi_st_clk_enable(spi_st);
+ ret = clk_prepare_enable(spi_st->clk);
pinctrl_pm_select_default_state(dev);
return ret;