From: Kelvin Zhang via B4 Relay <devnull+kelvin.zhang.amlogic.com@kernel.org>
To: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
"Neil Armstrong" <neil.armstrong@linaro.org>,
"Kevin Hilman" <khilman@baylibre.com>,
"Jerome Brunet" <jbrunet@baylibre.com>,
"Martin Blumenstingl" <martin.blumenstingl@googlemail.com>,
"Rob Herring" <robh@kernel.org>,
"Krzysztof Kozlowski" <krzk+dt@kernel.org>,
"Conor Dooley" <conor+dt@kernel.org>
Cc: linux-pwm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org,
devicetree@vger.kernel.org,
Kelvin Zhang <kelvin.zhang@amlogic.com>,
Junyi Zhao <junyi.zhao@amlogic.com>
Subject: [PATCH v4 1/2] pwm: meson: Add support for Amlogic S4 PWM
Date: Wed, 24 Apr 2024 18:28:34 +0800 [thread overview]
Message-ID: <20240424-s4-pwm-v4-1-ee22effd40d0@amlogic.com> (raw)
In-Reply-To: <20240424-s4-pwm-v4-0-ee22effd40d0@amlogic.com>
From: Junyi Zhao <junyi.zhao@amlogic.com>
This patch adds support for Amlogic S4 PWM.
Signed-off-by: Junyi Zhao <junyi.zhao@amlogic.com>
Signed-off-by: Kelvin Zhang <kelvin.zhang@amlogic.com>
---
drivers/pwm/pwm-meson.c | 37 +++++++++++++++++++++++++++++++++++++
1 file changed, 37 insertions(+)
diff --git a/drivers/pwm/pwm-meson.c b/drivers/pwm/pwm-meson.c
index ea96c5973488..6abc823745e4 100644
--- a/drivers/pwm/pwm-meson.c
+++ b/drivers/pwm/pwm-meson.c
@@ -462,6 +462,35 @@ static int meson_pwm_init_channels_meson8b_v2(struct pwm_chip *chip)
return meson_pwm_init_clocks_meson8b(chip, mux_parent_data);
}
+static int meson_pwm_init_channels_meson_s4(struct pwm_chip *chip)
+{
+ int i, ret;
+ struct device *dev = pwmchip_parent(chip);
+ struct device_node *np = dev->of_node;
+ struct meson_pwm *meson = to_meson_pwm(chip);
+ struct meson_pwm_channel *channel;
+
+ for (i = 0; i < MESON_NUM_PWMS; i++) {
+ channel = &meson->channels[i];
+ channel->clk = of_clk_get(np, i);
+ if (IS_ERR(channel->clk)) {
+ ret = PTR_ERR(channel->clk);
+ dev_err_probe(dev, ret, "Failed to get clk\n");
+ goto err;
+ }
+ }
+
+ return 0;
+
+err:
+ while (--i >= 0) {
+ channel = &meson->channels[i];
+ clk_put(channel->clk);
+ }
+
+ return ret;
+}
+
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,
@@ -500,6 +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_meson_s4_data = {
+ .channels_init = meson_pwm_init_channels_meson_s4,
+};
+
static const struct of_device_id meson_pwm_matches[] = {
{
.compatible = "amlogic,meson8-pwm-v2",
@@ -538,6 +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_meson_s4_data
+ },
{},
};
MODULE_DEVICE_TABLE(of, meson_pwm_matches);
--
2.37.1
next prev parent reply other threads:[~2024-04-24 10:28 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-24 10:28 [PATCH v4 0/2] Add support for Amlogic S4 PWM Kelvin Zhang via B4 Relay
2024-04-24 10:28 ` Kelvin Zhang via B4 Relay [this message]
2024-04-24 10:32 ` [PATCH v4 1/2] pwm: meson: " Jerome Brunet
2024-04-24 11:44 ` Junyi Zhao
2024-05-03 23:27 ` George Stark
2024-04-24 13:51 ` Uwe Kleine-König
2024-04-24 13:53 ` Jerome Brunet
2024-04-24 14:01 ` George Stark
2024-04-24 10:28 ` [PATCH v4 2/2] arm64: dts: amlogic: Add " Kelvin Zhang via B4 Relay
2024-04-26 6:52 ` Krzysztof Kozlowski
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