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pwm: atmel-tcb: Prepare removing pwm_chip from driver data

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This prepares the driver for further changes that will drop struct
pwm_chip chip from struct atmel_tcb_pwm_chip. Use the pwm_chip as driver
data instead of the atmel_tcb_pwm_chip to get access to the pwm_chip in
the .suspend() and .resume() callbacks and atmel_tcb_pwm_remove()
without using tcbpwm->chip.

Link: https://lore.kernel.org/r/6a90083e9d1ab1c34422161593d6d7a669143217.1707900770.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
This commit is contained in:
Uwe Kleine-König
2024-02-14 10:31:01 +01:00
parent 44fe6578b8
commit dfab73eb28
1 changed files with 14 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
drivers/pwm/pwm-atmel-tcb.c
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@@ -388,6 +388,7 @@ static const struct of_device_id atmel_tcb_of_match[] = {
static int atmel_tcb_pwm_probe(struct platform_device *pdev)
{
struct pwm_chip *chip;
const struct of_device_id *match;
struct atmel_tcb_pwm_chip *tcbpwm;
const struct atmel_tcb_config *config;
@@ -436,9 +437,10 @@ static int atmel_tcb_pwm_probe(struct platform_device *pdev)
}
}
tcbpwm->chip.dev = &pdev->dev;
tcbpwm->chip.ops = &atmel_tcb_pwm_ops;
tcbpwm->chip.npwm = NPWM;
chip = &tcbpwm->chip;
chip->dev = &pdev->dev;
chip->ops = &atmel_tcb_pwm_ops;
chip->npwm = NPWM;
tcbpwm->channel = channel;
tcbpwm->width = config->counter_width;
@@ -448,11 +450,11 @@ static int atmel_tcb_pwm_probe(struct platform_device *pdev)
spin_lock_init(&tcbpwm->lock);
err = pwmchip_add(&tcbpwm->chip);
err = pwmchip_add(chip);
if (err < 0)
goto err_disable_clk;
platform_set_drvdata(pdev, tcbpwm);
platform_set_drvdata(pdev, chip);
return 0;
@@ -473,9 +475,10 @@ static int atmel_tcb_pwm_probe(struct platform_device *pdev)
static void atmel_tcb_pwm_remove(struct platform_device *pdev)
{
struct atmel_tcb_pwm_chip *tcbpwm = platform_get_drvdata(pdev);
struct pwm_chip *chip = platform_get_drvdata(pdev);
struct atmel_tcb_pwm_chip *tcbpwm = to_tcb_chip(chip);
pwmchip_remove(&tcbpwm->chip);
pwmchip_remove(chip);
clk_disable_unprepare(tcbpwm->slow_clk);
clk_put(tcbpwm->gclk);
@@ -491,7 +494,8 @@ MODULE_DEVICE_TABLE(of, atmel_tcb_pwm_dt_ids);
static int atmel_tcb_pwm_suspend(struct device *dev)
{
struct atmel_tcb_pwm_chip *tcbpwm = dev_get_drvdata(dev);
struct pwm_chip *chip = dev_get_drvdata(dev);
struct atmel_tcb_pwm_chip *tcbpwm = to_tcb_chip(chip);
struct atmel_tcb_channel *chan = &tcbpwm->bkup;
unsigned int channel = tcbpwm->channel;
@@ -505,7 +509,8 @@ static int atmel_tcb_pwm_suspend(struct device *dev)
static int atmel_tcb_pwm_resume(struct device *dev)
{
struct atmel_tcb_pwm_chip *tcbpwm = dev_get_drvdata(dev);
struct pwm_chip *chip = dev_get_drvdata(dev);
struct atmel_tcb_pwm_chip *tcbpwm = to_tcb_chip(chip);
struct atmel_tcb_channel *chan = &tcbpwm->bkup;
unsigned int channel = tcbpwm->channel;