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pwm: stmpe: Allow to compile as a module

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pwm-stmpe is the only driver that cannot be built as a module. Add the
necessary boilerplate to also make this driver modular.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Link: https://lore.kernel.org/r/20250215143723.636591-2-u.kleine-koenig@baylibre.com
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
This commit is contained in:
Uwe Kleine-König 2025-02-15 15:37:22 +01:00 committed by Uwe Kleine-König
parent 4b31eb55db
commit a2b8191ab6
2 changed files with 24 additions and 3 deletions
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2
drivers/pwm/Kconfig
View File

@ -646,7 +646,7 @@ config PWM_STM32_LP
will be called pwm-stm32-lp.
config PWM_STMPE
bool "STMPE expander PWM export"
tristate "STMPE expander PWM export"
depends on MFD_STMPE
help
This enables support for the PWMs found in the STMPE I/O

25
drivers/pwm/pwm-stmpe.c
View File

@ -326,12 +326,33 @@ static int __init stmpe_pwm_probe(struct platform_device *pdev)
return ret;
}
platform_set_drvdata(pdev, chip);
return 0;
}
static struct platform_driver stmpe_pwm_driver = {
static void __exit stmpe_pwm_remove(struct platform_device *pdev)
{
struct stmpe *stmpe = dev_get_drvdata(pdev->dev.parent);
struct pwm_chip *chip = platform_get_drvdata(pdev);
pwmchip_remove(chip);
stmpe_disable(stmpe, STMPE_BLOCK_PWM);
}
/*
* stmpe_pwm_remove() lives in .exit.text. For drivers registered via
* module_platform_driver_probe() this is ok because they cannot get unbound at
* runtime. So mark the driver struct with __refdata to prevent modpost
* triggering a section mismatch warning.
*/
static struct platform_driver stmpe_pwm_driver __refdata = {
.driver = {
.name = "stmpe-pwm",
},
.remove = __exit_p(stmpe_pwm_remove),
};
builtin_platform_driver_probe(stmpe_pwm_driver, stmpe_pwm_probe);
module_platform_driver_probe(stmpe_pwm_driver, stmpe_pwm_probe);
MODULE_DESCRIPTION("STMPE expander PWM");
MODULE_LICENSE("GPL");