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a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1716280318; bh=FvFfKXmL892C/19FVjh91A40ta7Bup2GELFyNP6Jycw=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=Bx3PYm6SGeIJCgWyRBd4NJFtPuc9zvFFTpshrrRhzpoMWryJgiflnH0ZXAaURqRrl xFjlA9U7Yj2osmMIb5b1zohISb/fOmn1DNUAztFd50SM2/c7xmmWAMQNPS5xEHtbYV Qw3WasyUuGb7lSwDCUvsMHbDrZ0o/jZAuEU5qc9tLYdhmDWR+60WeYlpJ8bl+bDk9Z /kCtpSVQBmQXt3Q80Sdo7ZlCRIFpqSmEgU34q3jGW4UXDUSZIulvieG5on7FULVhS/ Oud7Ah9FPnsQ7AMwRdfin5r5nzaHMUO4k6tuys4/zjINhKQB3E+Jyube3+tkGDvO3k bE3bA+eGEkNpw== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 59678C25B78; Tue, 21 May 2024 08:31:58 +0000 (UTC) From: Kelvin Zhang via B4 Relay Date: Tue, 21 May 2024 16:31:34 +0800 Subject: [PATCH v5 1/2] pwm: meson: Add support for Amlogic S4 PWM Precedence: bulk X-Mailing-List: linux-pwm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240521-s4-pwm-v5-1-0c91f5fa32cd@amlogic.com> References: <20240521-s4-pwm-v5-0-0c91f5fa32cd@amlogic.com> In-Reply-To: <20240521-s4-pwm-v5-0-0c91f5fa32cd@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=1716280316; l=2531; i=kelvin.zhang@amlogic.com; s=20240329; h=from:subject:message-id; bh=TO8jk1KfAyzCYn3EQLKzqT09OdAOiA4QmoDLOLbNW40=; b=5mmETv38pNe+0fspL2pwrWOlZHTqe3xBoP5S/HyPB3sSldBE+iqroQeEX7+lrj6B8K/8KMeGU b0igt5ehiIKBiBuNmWcxyEcow9PXSdNQWtU4PVQZpKlNYdMUHcpPyta 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 This patch adds support for Amlogic S4 PWM. Signed-off-by: Junyi Zhao Signed-off-by: Kelvin Zhang --- drivers/pwm/pwm-meson.c | 53 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) diff --git a/drivers/pwm/pwm-meson.c b/drivers/pwm/pwm-meson.c index b2f97dfb01bb..9fea28a51921 100644 --- a/drivers/pwm/pwm-meson.c +++ b/drivers/pwm/pwm-meson.c @@ -460,6 +460,51 @@ 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) +{ + int i; + struct meson_pwm *meson; + struct meson_pwm_channel *channel; + + meson = (struct meson_pwm *)data; + for (i = 0; i < MESON_NUM_PWMS; i++) { + channel = &meson->channels[i]; + clk_put(channel->clk); + } +} + +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; + } + } + 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 +543,10 @@ 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", @@ -536,6 +585,10 @@ 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);