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Wed, 29 May 2024 10:01:17 +0000 (UTC) From: Kelvin Zhang via B4 Relay Date: Wed, 29 May 2024 18:00:56 +0800 Subject: [PATCH v6 1/2] pwm: meson: Add support for Amlogic S4 PWM Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20240529-s4-pwm-v6-1-270f63049f20@amlogic.com> References: <20240529-s4-pwm-v6-0-270f63049f20@amlogic.com> In-Reply-To: <20240529-s4-pwm-v6-0-270f63049f20@amlogic.com> To: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Neil Armstrong , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Rob Herring , Krzysztof Kozlowski , Conor Dooley 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 , Junyi Zhao X-Mailer: b4 0.12.4 X-Developer-Signature: v=1; a=ed25519-sha256; t=1716976876; l=2415; i=kelvin.zhang@amlogic.com; s=20240329; h=from:subject:message-id; bh=8sG15QArjOg32TnDx5atK6muQxwE/8zIMoEGBdYsNU0=; b=xckEUtXiz+UAPnFeNXgRskIwNtR3eYtZJMf1R5mGYu+oGQ25XoliidjORSerGwmAPGCZKySzh QUO2Eb4P9uqAfJg4F3jzq1qCFNq4Zqd7I+034OIQKrlVHJB1c27Jb/b X-Developer-Key: i=kelvin.zhang@amlogic.com; a=ed25519; pk=pgnle7HTNvnNTcOoGejvtTC7BJT30HUNXfMHRRXSylI= X-Endpoint-Received: by B4 Relay for kelvin.zhang@amlogic.com/20240329 with auth_id=148 X-Original-From: Kelvin Zhang Reply-To: kelvin.zhang@amlogic.com From: Junyi Zhao Add support for Amlogic S4 PWM. Signed-off-by: Junyi Zhao Signed-off-by: Kelvin Zhang --- drivers/pwm/pwm-meson.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) diff --git a/drivers/pwm/pwm-meson.c b/drivers/pwm/pwm-meson.c index b2f97dfb01bb..a513ebbb5666 100644 --- a/drivers/pwm/pwm-meson.c +++ b/drivers/pwm/pwm-meson.c @@ -460,6 +460,47 @@ 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 meson_pwm *meson = (struct meson_pwm *)data; + int i; + + for (i = 0; i < MESON_NUM_PWMS; i++) + clk_put(meson->channels[i].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); + struct meson_pwm_channel *channel; + int i, ret; + + 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; + } + } + ret = devm_add_action_or_reset(dev, meson_pwm_s4_put_clk, meson); + if (ret) + return ret; + + 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, @@ -498,6 +539,10 @@ 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 +581,10 @@ 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); -- 2.37.1