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pwm: berlin: 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 berlin_pwm_chip. Use the pwm_chip as driver
data instead of the berlin_pwm_chip to get access to the pwm_chip in
berlin_pwm_suspend() and berlin_pwm_resume() without using bpc->chip.

Link: https://lore.kernel.org/r/d2a0c5b664ef1bfd4719c645c069717d63fb4e65.1707900770.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 10:31:07 +01:00
parent e5c368b821
commit 5874eaf869
1 changed files with 13 additions and 9 deletions
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22
drivers/pwm/pwm-berlin.c
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@ -198,6 +198,7 @@ MODULE_DEVICE_TABLE(of, berlin_pwm_match);
static int berlin_pwm_probe(struct platform_device *pdev)
{
struct pwm_chip *chip;
struct berlin_pwm_chip *bpc;
int ret;
@ -213,25 +214,27 @@ static int berlin_pwm_probe(struct platform_device *pdev)
if (IS_ERR(bpc->clk))
return PTR_ERR(bpc->clk);
bpc->chip.dev = &pdev->dev;
bpc->chip.ops = &berlin_pwm_ops;
bpc->chip.npwm = BERLIN_PWM_NUMPWMS;
chip = &bpc->chip;
chip->dev = &pdev->dev;
chip->ops = &berlin_pwm_ops;
chip->npwm = BERLIN_PWM_NUMPWMS;
ret = devm_pwmchip_add(&pdev->dev, &bpc->chip);
ret = devm_pwmchip_add(&pdev->dev, chip);
if (ret < 0)
return dev_err_probe(&pdev->dev, ret, "failed to add PWM chip\n");
platform_set_drvdata(pdev, bpc);
platform_set_drvdata(pdev, chip);
return 0;
}
static int berlin_pwm_suspend(struct device *dev)
{
struct berlin_pwm_chip *bpc = dev_get_drvdata(dev);
struct pwm_chip *chip = dev_get_drvdata(dev);
struct berlin_pwm_chip *bpc = to_berlin_pwm_chip(chip);
unsigned int i;
for (i = 0; i < bpc->chip.npwm; i++) {
for (i = 0; i < chip->npwm; i++) {
struct berlin_pwm_channel *channel = &bpc->channel[i];
channel->enable = berlin_pwm_readl(bpc, i, BERLIN_PWM_ENABLE);
@ -247,7 +250,8 @@ static int berlin_pwm_suspend(struct device *dev)
static int berlin_pwm_resume(struct device *dev)
{
struct berlin_pwm_chip *bpc = dev_get_drvdata(dev);
struct pwm_chip *chip = dev_get_drvdata(dev);
struct berlin_pwm_chip *bpc = to_berlin_pwm_chip(chip);
unsigned int i;
int ret;
@ -255,7 +259,7 @@ static int berlin_pwm_resume(struct device *dev)
if (ret)
return ret;
for (i = 0; i < bpc->chip.npwm; i++) {
for (i = 0; i < chip->npwm; i++) {
struct berlin_pwm_channel *channel = &bpc->channel[i];
berlin_pwm_writel(bpc, i, channel->ctrl, BERLIN_PWM_CONTROL);