iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

pwm: mediatek: Make use of devm_pwmchip_alloc() function

Browse Source 
This prepares the pwm-mediatek 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/513b2037c00ebf2f3a69472f4b99adaf4fb40d83.1707900770.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 10:31:56 +01:00
parent f1b1e74731
commit 1c8090d7b3
1 changed files with 14 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
drivers/pwm/pwm-mediatek.c
View File

@ -42,7 +42,6 @@ struct pwm_mediatek_of_data {
/**
* struct pwm_mediatek_chip - struct representing PWM chip
* @chip: linux PWM chip representation
* @regs: base address of PWM chip
* @clk_top: the top clock generator
* @clk_main: the clock used by PWM core
@ -50,7 +49,6 @@ struct pwm_mediatek_of_data {
* @soc: pointer to chip's platform data
*/
struct pwm_mediatek_chip {
struct pwm_chip chip;
void __iomem *regs;
struct clk *clk_top;
struct clk *clk_main;
@ -69,7 +67,7 @@ static const unsigned int mtk_pwm_reg_offset_v2[] = {
static inline struct pwm_mediatek_chip *
to_pwm_mediatek_chip(struct pwm_chip *chip)
{
return container_of(chip, struct pwm_mediatek_chip, chip);
return pwmchip_get_drvdata(chip);
}
static int pwm_mediatek_clk_enable(struct pwm_chip *chip,
@ -232,21 +230,26 @@ static const struct pwm_ops pwm_mediatek_ops = {
static int pwm_mediatek_probe(struct platform_device *pdev)
{
struct pwm_chip *chip;
struct pwm_mediatek_chip *pc;
const struct pwm_mediatek_of_data *soc;
unsigned int i;
int ret;
pc = devm_kzalloc(&pdev->dev, sizeof(*pc), GFP_KERNEL);
if (!pc)
return -ENOMEM;
soc = of_device_get_match_data(&pdev->dev);
pc->soc = of_device_get_match_data(&pdev->dev);
chip = devm_pwmchip_alloc(&pdev->dev, soc->num_pwms, sizeof(*pc));
if (IS_ERR(chip))
return PTR_ERR(chip);
pc = to_pwm_mediatek_chip(chip);
pc->soc = soc;
pc->regs = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(pc->regs))
return PTR_ERR(pc->regs);
pc->clk_pwms = devm_kmalloc_array(&pdev->dev, pc->soc->num_pwms,
pc->clk_pwms = devm_kmalloc_array(&pdev->dev, soc->num_pwms,
sizeof(*pc->clk_pwms), GFP_KERNEL);
if (!pc->clk_pwms)
return -ENOMEM;
@ -261,7 +264,7 @@ static int pwm_mediatek_probe(struct platform_device *pdev)
return dev_err_probe(&pdev->dev, PTR_ERR(pc->clk_main),
"Failed to get main clock\n");
for (i = 0; i < pc->soc->num_pwms; i++) {
for (i = 0; i < soc->num_pwms; i++) {
char name[8];
snprintf(name, sizeof(name), "pwm%d", i + 1);
@ -272,11 +275,9 @@ static int pwm_mediatek_probe(struct platform_device *pdev)
"Failed to get %s clock\n", name);
}
pc->chip.dev = &pdev->dev;
pc->chip.ops = &pwm_mediatek_ops;
pc->chip.npwm = pc->soc->num_pwms;
chip->ops = &pwm_mediatek_ops;
ret = devm_pwmchip_add(&pdev->dev, &pc->chip);
ret = devm_pwmchip_add(&pdev->dev, chip);
if (ret < 0)
return dev_err_probe(&pdev->dev, ret, "pwmchip_add() failed\n");