diff options
| author |   Xiubo Li <Li.Xiubo@freescale.com> | 2014-08-19 12:38:01 +0800 |
|---|---|---|
| committer |   Thierry Reding <thierry.reding@gmail.com> | 2014-08-20 10:09:54 +0200 |
| commit | cd6d92d2aa1556b22cd05acbc5f2cc8e5caafcc4 (patch) | |
| tree | 86516b4679ad10da31b581bfa60e69f8da78e705 /drivers/pwm | |
| parent | pwm: Fix period and polarity in pwm_get() for non-perfect matches (diff) | |
| download | linux-dev-cd6d92d2aa1556b22cd05acbc5f2cc8e5caafcc4.tar.xz linux-dev-cd6d92d2aa1556b22cd05acbc5f2cc8e5caafcc4.zip | |
pwm: fsl-ftm: Clean up the code
This patch intends to prepare for converting to direct regmap API usage.
Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'drivers/pwm')
| -rw-r--r-- | drivers/pwm/pwm-fsl-ftm.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/drivers/pwm/pwm-fsl-ftm.c b/drivers/pwm/pwm-fsl-ftm.c index a18bc8fea385..96982da52d86 100644 --- a/drivers/pwm/pwm-fsl-ftm.c +++ b/drivers/pwm/pwm-fsl-ftm.c @@ -21,11 +21,10 @@ #include <linux/slab.h> #define FTM_SC 0x00 -#define FTM_SC_CLK_MASK 0x3 -#define FTM_SC_CLK_SHIFT 3 -#define FTM_SC_CLK(c) (((c) + 1) << FTM_SC_CLK_SHIFT) +#define FTM_SC_CLK_MASK_SHIFT 3 +#define FTM_SC_CLK_MASK (3 << FTM_SC_CLK_MASK_SHIFT) +#define FTM_SC_CLK(c) (((c) + 1) << FTM_SC_CLK_MASK_SHIFT) #define FTM_SC_PS_MASK 0x7 -#define FTM_SC_PS_SHIFT 0 #define FTM_CNT 0x04 #define FTM_MOD 0x08 @@ -258,7 +257,7 @@ static int fsl_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm, } val = readl(fpc->base + FTM_SC); - val &= ~(FTM_SC_PS_MASK << FTM_SC_PS_SHIFT); + val &= ~FTM_SC_PS_MASK; val |= fpc->clk_ps; writel(val, fpc->base + FTM_SC); writel(period - 1, fpc->base + FTM_MOD); @@ -305,7 +304,7 @@ static int fsl_counter_clock_enable(struct fsl_pwm_chip *fpc) /* select counter clock source */ val = readl(fpc->base + FTM_SC); - val &= ~(FTM_SC_CLK_MASK << FTM_SC_CLK_SHIFT); + val &= ~FTM_SC_CLK_MASK; val |= FTM_SC_CLK(fpc->cnt_select); writel(val, fpc->base + FTM_SC); @@ -357,7 +356,7 @@ static void fsl_counter_clock_disable(struct fsl_pwm_chip *fpc) /* no users left, disable PWM counter clock */ val = readl(fpc->base + FTM_SC); - val &= ~(FTM_SC_CLK_MASK << FTM_SC_CLK_SHIFT); + val &= ~FTM_SC_CLK_MASK; writel(val, fpc->base + FTM_SC); clk_disable_unprepare(fpc->clk[FSL_PWM_CLK_CNTEN]); |