diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/pwm/pwm-sifive.c | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/drivers/pwm/pwm-sifive.c b/drivers/pwm/pwm-sifive.c index 089e50bdbb..ed7957cc51 100644 --- a/drivers/pwm/pwm-sifive.c +++ b/drivers/pwm/pwm-sifive.c @@ -41,7 +41,7 @@ #define PWM_SIFIVE_DEFAULT_PERIOD 10000000 struct pwm_sifive_ddata { - struct pwm_chip chip; + struct device *parent; struct mutex lock; /* lock to protect user_count and approx_period */ struct notifier_block notifier; struct clk *clk; @@ -54,7 +54,7 @@ struct pwm_sifive_ddata { static inline struct pwm_sifive_ddata *pwm_sifive_chip_to_ddata(struct pwm_chip *chip) { - return container_of(chip, struct pwm_sifive_ddata, chip); + return pwmchip_get_drvdata(chip); } static int pwm_sifive_request(struct pwm_chip *chip, struct pwm_device *pwm) @@ -102,7 +102,7 @@ static void pwm_sifive_update_clock(struct pwm_sifive_ddata *ddata, /* As scale <= 15 the shift operation cannot overflow. */ num = (unsigned long long)NSEC_PER_SEC << (PWM_SIFIVE_CMPWIDTH + scale); ddata->real_period = div64_ul(num, rate); - dev_dbg(ddata->chip.dev, + dev_dbg(ddata->parent, "New real_period = %u ns\n", ddata->real_period); } @@ -185,7 +185,7 @@ static int pwm_sifive_apply(struct pwm_chip *chip, struct pwm_device *pwm, if (!enabled) { ret = clk_enable(ddata->clk); if (ret) { - dev_err(ddata->chip.dev, "Enable clk failed\n"); + dev_err(pwmchip_parent(chip), "Enable clk failed\n"); return ret; } } @@ -230,15 +230,14 @@ static int pwm_sifive_probe(struct platform_device *pdev) u32 val; unsigned int enabled_pwms = 0, enabled_clks = 1; - ddata = devm_kzalloc(dev, sizeof(*ddata), GFP_KERNEL); - if (!ddata) - return -ENOMEM; + chip = devm_pwmchip_alloc(dev, 4, sizeof(*ddata)); + if (IS_ERR(chip)) + return PTR_ERR(chip); + ddata = pwm_sifive_chip_to_ddata(chip); + ddata->parent = dev; mutex_init(&ddata->lock); - chip = &ddata->chip; - chip->dev = dev; chip->ops = &pwm_sifive_ops; - chip->npwm = 4; ddata->regs = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(ddata->regs)) @@ -296,7 +295,7 @@ static int pwm_sifive_probe(struct platform_device *pdev) goto unregister_clk; } - platform_set_drvdata(pdev, ddata); + platform_set_drvdata(pdev, chip); dev_dbg(dev, "SiFive PWM chip registered %d PWMs\n", chip->npwm); return 0; @@ -314,15 +313,16 @@ disable_clk: static void pwm_sifive_remove(struct platform_device *dev) { - struct pwm_sifive_ddata *ddata = platform_get_drvdata(dev); + struct pwm_chip *chip = platform_get_drvdata(dev); + struct pwm_sifive_ddata *ddata = pwm_sifive_chip_to_ddata(chip); struct pwm_device *pwm; int ch; - pwmchip_remove(&ddata->chip); + pwmchip_remove(chip); clk_notifier_unregister(ddata->clk, &ddata->notifier); - for (ch = 0; ch < ddata->chip.npwm; ch++) { - pwm = &ddata->chip.pwms[ch]; + for (ch = 0; ch < chip->npwm; ch++) { + pwm = &chip->pwms[ch]; if (pwm->state.enabled) clk_disable(ddata->clk); } |