From b014a30c5991e67aa90b6ff9bd4ec16435bbcefd Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Sun, 31 Mar 2013 23:04:31 +0800 Subject: [PATCH] pwm: pxa: Remove clk_enabled field from struct pxa_pwm_chip clk_enable/clk_disable maintain an enable_count, clk_prepare and clk_unprepare also maintain a prepare_count. These APIs will do prepare/enable when the first user calling these APIs, and do disable/unprepare when the corresponding counter reach 0. Thus We don't need to maintain a clk_enabled counter here. Signed-off-by: Axel Lin Acked-by: Eric Miao Signed-off-by: Thierry Reding --- drivers/pwm/pwm-pxa.c | 16 ++-------------- 1 file changed, 2 insertions(+), 14 deletions(-) diff --git a/drivers/pwm/pwm-pxa.c b/drivers/pwm/pwm-pxa.c index 20370e61de5a..b78988255aee 100644 --- a/drivers/pwm/pwm-pxa.c +++ b/drivers/pwm/pwm-pxa.c @@ -48,7 +48,6 @@ struct pxa_pwm_chip { struct device *dev; struct clk *clk; - int clk_enabled; void __iomem *mmio_base; }; @@ -108,24 +107,15 @@ static int pxa_pwm_config(struct pwm_chip *chip, struct pwm_device *pwm, static int pxa_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm) { struct pxa_pwm_chip *pc = to_pxa_pwm_chip(chip); - int rc = 0; - if (!pc->clk_enabled) { - rc = clk_prepare_enable(pc->clk); - if (!rc) - pc->clk_enabled++; - } - return rc; + return clk_prepare_enable(pc->clk); } static void pxa_pwm_disable(struct pwm_chip *chip, struct pwm_device *pwm) { struct pxa_pwm_chip *pc = to_pxa_pwm_chip(chip); - if (pc->clk_enabled) { - clk_disable_unprepare(pc->clk); - pc->clk_enabled--; - } + clk_disable_unprepare(pc->clk); } static struct pwm_ops pxa_pwm_ops = { @@ -152,8 +142,6 @@ static int pwm_probe(struct platform_device *pdev) if (IS_ERR(pwm->clk)) return PTR_ERR(pwm->clk); - pwm->clk_enabled = 0; - pwm->chip.dev = &pdev->dev; pwm->chip.ops = &pxa_pwm_ops; pwm->chip.base = -1; -- 2.20.1