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path: root/drivers/pwm/pwm-clk.c
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Diffstat (limited to 'drivers/pwm/pwm-clk.c')
-rw-r--r--drivers/pwm/pwm-clk.c27
1 files changed, 15 insertions, 12 deletions
diff --git a/drivers/pwm/pwm-clk.c b/drivers/pwm/pwm-clk.c
index 9dd88b3869..c19a482d7e 100644
--- a/drivers/pwm/pwm-clk.c
+++ b/drivers/pwm/pwm-clk.c
@@ -28,12 +28,14 @@
#include <linux/pwm.h>
struct pwm_clk_chip {
- struct pwm_chip chip;
struct clk *clk;
bool clk_enabled;
};
-#define to_pwm_clk_chip(_chip) container_of(_chip, struct pwm_clk_chip, chip)
+static inline struct pwm_clk_chip *to_pwm_clk_chip(struct pwm_chip *chip)
+{
+ return pwmchip_get_drvdata(chip);
+}
static int pwm_clk_apply(struct pwm_chip *chip, struct pwm_device *pwm,
const struct pwm_state *state)
@@ -81,35 +83,36 @@ static const struct pwm_ops pwm_clk_ops = {
static int pwm_clk_probe(struct platform_device *pdev)
{
+ struct pwm_chip *chip;
struct pwm_clk_chip *pcchip;
int ret;
- pcchip = devm_kzalloc(&pdev->dev, sizeof(*pcchip), GFP_KERNEL);
- if (!pcchip)
- return -ENOMEM;
+ chip = devm_pwmchip_alloc(&pdev->dev, 1, sizeof(*pcchip));
+ if (IS_ERR(chip))
+ return PTR_ERR(chip);
+ pcchip = to_pwm_clk_chip(chip);
pcchip->clk = devm_clk_get_prepared(&pdev->dev, NULL);
if (IS_ERR(pcchip->clk))
return dev_err_probe(&pdev->dev, PTR_ERR(pcchip->clk),
"Failed to get clock\n");
- pcchip->chip.dev = &pdev->dev;
- pcchip->chip.ops = &pwm_clk_ops;
- pcchip->chip.npwm = 1;
+ chip->ops = &pwm_clk_ops;
- ret = pwmchip_add(&pcchip->chip);
+ ret = pwmchip_add(chip);
if (ret < 0)
return dev_err_probe(&pdev->dev, ret, "Failed to add pwm chip\n");
- platform_set_drvdata(pdev, pcchip);
+ platform_set_drvdata(pdev, chip);
return 0;
}
static void pwm_clk_remove(struct platform_device *pdev)
{
- struct pwm_clk_chip *pcchip = platform_get_drvdata(pdev);
+ struct pwm_chip *chip = platform_get_drvdata(pdev);
+ struct pwm_clk_chip *pcchip = to_pwm_clk_chip(chip);
- pwmchip_remove(&pcchip->chip);
+ pwmchip_remove(chip);
if (pcchip->clk_enabled)
clk_disable(pcchip->clk);