diff options
| author |   Sascha Hauer <s.hauer@pengutronix.de> | 2012-08-28 09:12:01 +0200 |
|---|---|---|
| committer |   Thierry Reding <thierry.reding@avionic-design.de> | 2012-09-12 14:25:04 +0200 |
| commit | 140827c148f2f3a95fdcec5310f6cd980139b383 (patch) | |
| tree | 513ab07873ffadbc33251f2b7d4ecd785f16b6b9 /drivers/pwm | |
| parent | pwm: i.MX: factor out SoC specific functions (diff) | |
| download | linux-dev-140827c148f2f3a95fdcec5310f6cd980139b383.tar.xz linux-dev-140827c148f2f3a95fdcec5310f6cd980139b383.zip | |
pwm: i.MX: remove unnecessary if in pwm_[en|dis]able
The PWM core makes sure that pwm_enable/disable are called only
once. Still keep the enabled state since we will need it in
pwm_config.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Reviewed-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Diffstat (limited to 'drivers/pwm')
| -rw-r--r-- | drivers/pwm/pwm-imx.c | 25 |
1 files changed, 11 insertions, 14 deletions
diff --git a/drivers/pwm/pwm-imx.c b/drivers/pwm/pwm-imx.c index 8b7f01e0a100..5d426ffe6a31 100644 --- a/drivers/pwm/pwm-imx.c +++ b/drivers/pwm/pwm-imx.c @@ -42,7 +42,7 @@ struct imx_chip { struct clk *clk; - int clk_enabled; + int enabled; void __iomem *mmio_base; struct pwm_chip chip; @@ -139,14 +139,15 @@ static int imx_pwm_config(struct pwm_chip *chip, static int imx_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm) { struct imx_chip *imx = to_imx_chip(chip); - int rc = 0; + int ret; - if (!imx->clk_enabled) { - rc = clk_prepare_enable(imx->clk); - if (!rc) - imx->clk_enabled = 1; - } - return rc; + ret = clk_prepare_enable(imx->clk); + if (ret) + return ret; + + imx->enabled = 1; + + return 0; } static void imx_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm) @@ -155,10 +156,8 @@ static void imx_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm) writel(0, imx->mmio_base + MX3_PWMCR); - if (imx->clk_enabled) { - clk_disable_unprepare(imx->clk); - imx->clk_enabled = 0; - } + clk_disable_unprepare(imx->clk); + imx->enabled = 0; } static struct pwm_ops imx_pwm_ops = { @@ -190,8 +189,6 @@ static int __devinit imx_pwm_probe(struct platform_device *pdev) imx->chip.base = -1; imx->chip.npwm = 1; - imx->clk_enabled = 0; - r = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (r == NULL) { dev_err(&pdev->dev, "no memory resource defined\n"); |