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| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2024-02-14 10:32:42 +0100 |
|---|---|---|
| committer | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2024-02-22 14:39:24 +0100 |
| commit | f29430710d92a9bdf4234dbc94f452cd72704fff (patch) | |
| tree | 63e64279554751c98f5ed2ab5d6b2f574884fa64 /drivers/pwm | |
| parent | fbde128940991873847c92ed86a323adbce61ebb (diff) | |
| download | linux-stable-f29430710d92a9bdf4234dbc94f452cd72704fff.tar.gz linux-stable-f29430710d92a9bdf4234dbc94f452cd72704fff.tar.bz2 linux-stable-f29430710d92a9bdf4234dbc94f452cd72704fff.zip | |
pwm: stm32: Prepare removing pwm_chip from driver data
This prepares the driver for further changes that will drop struct
pwm_chip chip from struct stm32_pwm. Use the pwm_chip as driver
data instead of the stm32_pwm to get access to the pwm_chip in
stm32_pwm_suspend() without using priv->chip.
Link: https://lore.kernel.org/r/3db96cd915d9d8fc350a7193c0d55dd109b1f035.1707900770.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Diffstat (limited to 'drivers/pwm')
| -rw-r--r-- | drivers/pwm/pwm-stm32.c | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/drivers/pwm/pwm-stm32.c b/drivers/pwm/pwm-stm32.c index ec15bc51d930..4d12f3d849cd 100644 --- a/drivers/pwm/pwm-stm32.c +++ b/drivers/pwm/pwm-stm32.c @@ -630,6 +630,7 @@ static int stm32_pwm_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct device_node *np = dev->of_node; struct stm32_timers *ddata = dev_get_drvdata(pdev->dev.parent); + struct pwm_chip *chip; struct stm32_pwm *priv; unsigned int num_enabled; unsigned int i; @@ -638,6 +639,7 @@ static int stm32_pwm_probe(struct platform_device *pdev) priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; + chip = &priv->chip; mutex_init(&priv->lock); priv->regmap = ddata->regmap; @@ -653,37 +655,38 @@ static int stm32_pwm_probe(struct platform_device *pdev) stm32_pwm_detect_complementary(priv); - priv->chip.dev = dev; - priv->chip.ops = &stm32pwm_ops; - priv->chip.npwm = stm32_pwm_detect_channels(priv, &num_enabled); + chip->dev = dev; + chip->ops = &stm32pwm_ops; + chip->npwm = stm32_pwm_detect_channels(priv, &num_enabled); /* Initialize clock refcount to number of enabled PWM channels. */ for (i = 0; i < num_enabled; i++) clk_enable(priv->clk); - ret = devm_pwmchip_add(dev, &priv->chip); + ret = devm_pwmchip_add(dev, chip); if (ret < 0) return ret; - platform_set_drvdata(pdev, priv); + platform_set_drvdata(pdev, chip); return 0; } static int stm32_pwm_suspend(struct device *dev) { - struct stm32_pwm *priv = dev_get_drvdata(dev); + struct pwm_chip *chip = dev_get_drvdata(dev); + struct stm32_pwm *priv = to_stm32_pwm_dev(chip); unsigned int i; u32 ccer, mask; /* Look for active channels */ ccer = active_channels(priv); - for (i = 0; i < priv->chip.npwm; i++) { + for (i = 0; i < chip->npwm; i++) { mask = TIM_CCER_CC1E << (i * 4); if (ccer & mask) { dev_err(dev, "PWM %u still in use by consumer %s\n", - i, priv->chip.pwms[i].label); + i, chip->pwms[i].label); return -EBUSY; } } @@ -693,7 +696,8 @@ static int stm32_pwm_suspend(struct device *dev) static int stm32_pwm_resume(struct device *dev) { - struct stm32_pwm *priv = dev_get_drvdata(dev); + struct pwm_chip *chip = dev_get_drvdata(dev); + struct stm32_pwm *priv = to_stm32_pwm_dev(chip); int ret; ret = pinctrl_pm_select_default_state(dev); |