Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
pwm: meson: Add support for Amlogic S4 PWM
Add support for Amlogic S4 PWM.
Signed-off-by: Junyi Zhao <junyi.zhao@amlogic.com>
Signed-off-by: Kelvin Zhang <kelvin.zhang@amlogic.com>
Reviewed-by: George Stark <gnstark@salutedevices.com>
Link: https://lore.kernel.org/r/20240613-s4-pwm-v8-1-b5bd0a768282@amlogic.com
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
authored by
Junyi Zhao
and committed by
Uwe Kleine-König
2ed3284f
7f61257c
+39
+39
drivers/pwm/pwm-meson.c
+39
drivers/pwm/pwm-meson.c
···
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return meson_pwm_init_clocks_meson8b(chip, mux_parent_data);
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}
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+
static void meson_pwm_s4_put_clk(void *data)
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{
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struct clk *clk = data;
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+
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clk_put(clk);
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}
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+
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static int meson_pwm_init_channels_s4(struct pwm_chip *chip)
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{
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struct device *dev = pwmchip_parent(chip);
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struct device_node *np = dev->of_node;
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struct meson_pwm *meson = to_meson_pwm(chip);
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int i, ret;
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for (i = 0; i < MESON_NUM_PWMS; i++) {
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meson->channels[i].clk = of_clk_get(np, i);
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if (IS_ERR(meson->channels[i].clk))
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return dev_err_probe(dev,
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PTR_ERR(meson->channels[i].clk),
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"Failed to get clk\n");
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ret = devm_add_action_or_reset(dev, meson_pwm_s4_put_clk,
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meson->channels[i].clk);
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if (ret)
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return dev_err_probe(dev, ret,
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"Failed to add clk_put action\n");
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}
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return 0;
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}
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+
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static const struct meson_pwm_data pwm_meson8b_data = {
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.parent_names = { "xtal", NULL, "fclk_div4", "fclk_div3" },
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.channels_init = meson_pwm_init_channels_meson8b_legacy,
···
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static const struct meson_pwm_data pwm_meson8_v2_data = {
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.channels_init = meson_pwm_init_channels_meson8b_v2,
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};
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static const struct meson_pwm_data pwm_s4_data = {
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.channels_init = meson_pwm_init_channels_s4,
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};
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static const struct of_device_id meson_pwm_matches[] = {
···
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{
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.compatible = "amlogic,meson-g12a-ao-pwm-cd",
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.data = &pwm_g12a_ao_cd_data
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},
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{
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.compatible = "amlogic,meson-s4-pwm",
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.data = &pwm_s4_data
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},
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{},
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};