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pwm: tegra: Make use of devm_pwmchip_alloc() function

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This prepares the pwm-tegra driver to further changes of the pwm core
outlined in the commit introducing devm_pwmchip_alloc(). There is no
intended semantical change and the driver should behave as before.

Link: https://lore.kernel.org/r/8719be3d57b0b5cf575b312e5ff41fe0717e3a43.1707900770.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 10:32:58 +01:00
parent aa37f83f7b
commit 7550ebf04c
1 changed files with 9 additions and 10 deletions
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19
drivers/pwm/pwm-tegra.c
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@ -65,8 +65,6 @@ struct tegra_pwm_soc {
}; };
struct tegra_pwm_chip { struct tegra_pwm_chip {
struct pwm_chip chip;
struct clk *clk; struct clk *clk;
struct reset_control*rst; struct reset_control*rst;
@ -80,7 +78,7 @@ struct tegra_pwm_chip {
static inline struct tegra_pwm_chip *to_tegra_pwm_chip(struct pwm_chip *chip) static inline struct tegra_pwm_chip *to_tegra_pwm_chip(struct pwm_chip *chip)
{ {
return container_of(chip, struct tegra_pwm_chip, chip); return pwmchip_get_drvdata(chip);
} }
static inline u32 pwm_readl(struct tegra_pwm_chip *pc, unsigned int offset) static inline u32 pwm_readl(struct tegra_pwm_chip *pc, unsigned int offset)
@ -273,14 +271,17 @@ static int tegra_pwm_probe(struct platform_device *pdev)
{ {
struct pwm_chip *chip; struct pwm_chip *chip;
struct tegra_pwm_chip *pc; struct tegra_pwm_chip *pc;
const struct tegra_pwm_soc *soc;
int ret; int ret;
pc = devm_kzalloc(&pdev->dev, sizeof(*pc), GFP_KERNEL); soc = of_device_get_match_data(&pdev->dev);
if (!pc)
return -ENOMEM;
chip = &pc->chip;
pc->soc = of_device_get_match_data(&pdev->dev); chip = devm_pwmchip_alloc(&pdev->dev, soc->num_channels, sizeof(*pc));
if (IS_ERR(chip))
return PTR_ERR(chip);
pc = to_tegra_pwm_chip(chip);
pc->soc = soc;
pc->regs = devm_platform_ioremap_resource(pdev, 0); pc->regs = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(pc->regs)) if (IS_ERR(pc->regs))
@ -328,9 +329,7 @@ static int tegra_pwm_probe(struct platform_device *pdev)
reset_control_deassert(pc->rst); reset_control_deassert(pc->rst);
chip->dev = &pdev->dev;
chip->ops = &tegra_pwm_ops; chip->ops = &tegra_pwm_ops;
chip->npwm = pc->soc->num_channels;
ret = pwmchip_add(chip); ret = pwmchip_add(chip);
if (ret < 0) { if (ret < 0) {