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Subject[PATCH 1/3] spi: omap2-mcspi: Call pm_runtime_* functions directly
Date
Call the pm_runtime functions directly making room for possible
pm optimisations. Also the runtime functions aren't just about
enabling and disabling of clocks though it does enable clocks also.

Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
---
drivers/spi/spi-omap2-mcspi.c | 28 +++++++++++-----------------
1 files changed, 11 insertions(+), 17 deletions(-)

diff --git a/drivers/spi/spi-omap2-mcspi.c b/drivers/spi/spi-omap2-mcspi.c
index 259f601..dd887eb 100644
--- a/drivers/spi/spi-omap2-mcspi.c
+++ b/drivers/spi/spi-omap2-mcspi.c
@@ -260,16 +260,6 @@ static void omap2_mcspi_restore_ctx(struct omap2_mcspi *mcspi)
list_for_each_entry(cs, &ctx->cs, node)
__raw_writel(cs->chconf0, cs->base + OMAP2_MCSPI_CHCONF0);
}
-static void omap2_mcspi_disable_clocks(struct omap2_mcspi *mcspi)
-{
- pm_runtime_mark_last_busy(mcspi->dev);
- pm_runtime_put_autosuspend(mcspi->dev);
-}
-
-static int omap2_mcspi_enable_clocks(struct omap2_mcspi *mcspi)
-{
- return pm_runtime_get_sync(mcspi->dev);
-}

static int omap2_prepare_transfer(struct spi_master *master)
{
@@ -848,12 +838,13 @@ static int omap2_mcspi_setup(struct spi_device *spi)
return ret;
}

- ret = omap2_mcspi_enable_clocks(mcspi);
+ ret = pm_runtime_get_sync(mcspi->dev);
if (ret < 0)
return ret;

ret = omap2_mcspi_setup_transfer(spi, NULL);
- omap2_mcspi_disable_clocks(mcspi);
+ pm_runtime_mark_last_busy(mcspi->dev);
+ pm_runtime_put_autosuspend(mcspi->dev);

return ret;
}
@@ -1067,7 +1058,7 @@ static int __devinit omap2_mcspi_master_setup(struct omap2_mcspi *mcspi)
struct omap2_mcspi_regs *ctx = &mcspi->ctx;
int ret = 0;

- ret = omap2_mcspi_enable_clocks(mcspi);
+ ret = pm_runtime_get_sync(mcspi->dev);
if (ret < 0)
return ret;

@@ -1076,7 +1067,8 @@ static int __devinit omap2_mcspi_master_setup(struct omap2_mcspi *mcspi)
ctx->wakeupenable = OMAP2_MCSPI_WAKEUPENABLE_WKEN;

omap2_mcspi_set_master_mode(master);
- omap2_mcspi_disable_clocks(mcspi);
+ pm_runtime_mark_last_busy(mcspi->dev);
+ pm_runtime_put_autosuspend(mcspi->dev);
return 0;
}

@@ -1251,7 +1243,8 @@ static int __devexit omap2_mcspi_remove(struct platform_device *pdev)
mcspi = spi_master_get_devdata(master);
dma_channels = mcspi->dma_channels;

- omap2_mcspi_disable_clocks(mcspi);
+ pm_runtime_mark_last_busy(mcspi->dev);
+ pm_runtime_put_autosuspend(mcspi->dev);
pm_runtime_disable(&pdev->dev);

spi_unregister_master(master);
@@ -1276,7 +1269,7 @@ static int omap2_mcspi_resume(struct device *dev)
struct omap2_mcspi_regs *ctx = &mcspi->ctx;
struct omap2_mcspi_cs *cs;

- omap2_mcspi_enable_clocks(mcspi);
+ pm_runtime_get_sync(mcspi->dev);
list_for_each_entry(cs, &ctx->cs, node) {
if ((cs->chconf0 & OMAP2_MCSPI_CHCONF_FORCE) == 0) {
/*
@@ -1289,7 +1282,8 @@ static int omap2_mcspi_resume(struct device *dev)
__raw_writel(cs->chconf0, cs->base + OMAP2_MCSPI_CHCONF0);
}
}
- omap2_mcspi_disable_clocks(mcspi);
+ pm_runtime_mark_last_busy(mcspi->dev);
+ pm_runtime_put_autosuspend(mcspi->dev);
return 0;
}
#else
--
1.7.5.4


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