Commit 2ed3284f authored by Junyi Zhao's avatar Junyi Zhao Committed by Uwe Kleine-König
Browse files

pwm: meson: Add support for Amlogic S4 PWM 



Add support for Amlogic S4 PWM.

Signed-off-by: default avatarJunyi Zhao <junyi.zhao@amlogic.com>
Signed-off-by: default avatarKelvin Zhang <kelvin.zhang@amlogic.com>
Reviewed-by: default avatarGeorge Stark <gnstark@salutedevices.com>
Link: https://lore.kernel.org/r/20240613-s4-pwm-v8-1-b5bd0a768282@amlogic.com


Signed-off-by: default avatarUwe Kleine-König <ukleinek@kernel.org>
parent 7f61257c

drivers/pwm/pwm-meson.c

+39 −0
Original line number Diff line number Diff line
@@ -460,6 +460,37 @@ static int meson_pwm_init_channels_meson8b_v2(struct pwm_chip *chip) 
	return meson_pwm_init_clocks_meson8b(chip, mux_parent_data);

}



static void meson_pwm_s4_put_clk(void *data)

{

	struct clk *clk = data;



	clk_put(clk);

}



static int meson_pwm_init_channels_s4(struct pwm_chip *chip)

{

	struct device *dev = pwmchip_parent(chip);

	struct device_node *np = dev->of_node;

	struct meson_pwm *meson = to_meson_pwm(chip);

	int i, ret;



	for (i = 0; i < MESON_NUM_PWMS; i++) {

		meson->channels[i].clk = of_clk_get(np, i);

		if (IS_ERR(meson->channels[i].clk))

			return dev_err_probe(dev,

					     PTR_ERR(meson->channels[i].clk),

					     "Failed to get clk\n");



		ret = devm_add_action_or_reset(dev, meson_pwm_s4_put_clk,

					       meson->channels[i].clk);

		if (ret)

			return dev_err_probe(dev, ret,

					     "Failed to add clk_put action\n");

	}



	return 0;

}



static const struct meson_pwm_data pwm_meson8b_data = {

	.parent_names = { "xtal", NULL, "fclk_div4", "fclk_div3" },

	.channels_init = meson_pwm_init_channels_meson8b_legacy,
@@ -498,6 +529,10 @@ static const struct meson_pwm_data pwm_meson8_v2_data = { 
	.channels_init = meson_pwm_init_channels_meson8b_v2,

};



static const struct meson_pwm_data pwm_s4_data = {

	.channels_init = meson_pwm_init_channels_s4,

};



static const struct of_device_id meson_pwm_matches[] = {

	{

		.compatible = "amlogic,meson8-pwm-v2",
@@ -536,6 +571,10 @@ static const struct of_device_id meson_pwm_matches[] = { 
		.compatible = "amlogic,meson-g12a-ao-pwm-cd",

		.data = &pwm_g12a_ao_cd_data

	},

	{

		.compatible = "amlogic,meson-s4-pwm",

		.data = &pwm_s4_data

	},

	{},

};

MODULE_DEVICE_TABLE(of, meson_pwm_matches);