From: Anand Moon <linux.amoon@gmail.com> To: Chanwoo Choi <cw00.choi@samsung.com>, MyungJoo Ham <myungjoo.ham@samsung.com>, Kyungmin Park <kyungmin.park@samsung.com>, Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>, Alim Akhtar <alim.akhtar@samsung.com> Cc: Anand Moon <linux.amoon@gmail.com>, linux-pm@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCHv1 1/2] PM / devfreq: exynos: Use Use devm_clk_get_enabled() helpers Date: Tue, 27 Feb 2024 00:02:56 +0530 [thread overview] Message-ID: <20240226183308.4730-1-linux.amoon@gmail.com> (raw) The devm_clk_get_enabled() helpers: - call devm_clk_get() - call clk_prepare_enable() and register what is needed in order to call clk_disable_unprepare() when needed, as a managed resource. This simplifies the code and avoids the calls to clk_disable_unprepare(). While at it, use dev_err_probe consistently, and use its return value to return the error code. Signed-off-by: Anand Moon <linux.amoon@gmail.com> --- drivers/devfreq/exynos-bus.c | 21 ++++----------------- 1 file changed, 4 insertions(+), 17 deletions(-) diff --git a/drivers/devfreq/exynos-bus.c b/drivers/devfreq/exynos-bus.c index 245898f1a88e..153340b6685f 100644 --- a/drivers/devfreq/exynos-bus.c +++ b/drivers/devfreq/exynos-bus.c @@ -160,7 +160,6 @@ static void exynos_bus_exit(struct device *dev) platform_device_unregister(bus->icc_pdev); dev_pm_opp_of_remove_table(dev); - clk_disable_unprepare(bus->clk); dev_pm_opp_put_regulators(bus->opp_token); } @@ -171,7 +170,6 @@ static void exynos_bus_passive_exit(struct device *dev) platform_device_unregister(bus->icc_pdev); dev_pm_opp_of_remove_table(dev); - clk_disable_unprepare(bus->clk); } static int exynos_bus_parent_parse_of(struct device_node *np, @@ -247,23 +245,15 @@ static int exynos_bus_parse_of(struct device_node *np, int ret; /* Get the clock to provide each bus with source clock */ - bus->clk = devm_clk_get(dev, "bus"); - if (IS_ERR(bus->clk)) { - dev_err(dev, "failed to get bus clock\n"); - return PTR_ERR(bus->clk); - } - - ret = clk_prepare_enable(bus->clk); - if (ret < 0) { - dev_err(dev, "failed to get enable clock\n"); - return ret; - } + bus->clk = devm_clk_get_enabled(dev, "bus"); + if (IS_ERR(bus->clk)) + return dev_err_probe(dev, PTR_ERR(bus->clk), "failed to get bus clock\n"); /* Get the freq and voltage from OPP table to scale the bus freq */ ret = dev_pm_opp_of_add_table(dev); if (ret < 0) { dev_err(dev, "failed to get OPP table\n"); - goto err_clk; + return ret; } rate = clk_get_rate(bus->clk); @@ -281,8 +271,6 @@ static int exynos_bus_parse_of(struct device_node *np, err_opp: dev_pm_opp_of_remove_table(dev); -err_clk: - clk_disable_unprepare(bus->clk); return ret; } @@ -453,7 +441,6 @@ static int exynos_bus_probe(struct platform_device *pdev) err: dev_pm_opp_of_remove_table(dev); - clk_disable_unprepare(bus->clk); err_reg: dev_pm_opp_put_regulators(bus->opp_token); -- 2.43.0
WARNING: multiple messages have this Message-ID (diff)
From: Anand Moon <linux.amoon@gmail.com> To: Chanwoo Choi <cw00.choi@samsung.com>, MyungJoo Ham <myungjoo.ham@samsung.com>, Kyungmin Park <kyungmin.park@samsung.com>, Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>, Alim Akhtar <alim.akhtar@samsung.com> Cc: Anand Moon <linux.amoon@gmail.com>, linux-pm@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCHv1 1/2] PM / devfreq: exynos: Use Use devm_clk_get_enabled() helpers Date: Tue, 27 Feb 2024 00:02:56 +0530 [thread overview] Message-ID: <20240226183308.4730-1-linux.amoon@gmail.com> (raw) The devm_clk_get_enabled() helpers: - call devm_clk_get() - call clk_prepare_enable() and register what is needed in order to call clk_disable_unprepare() when needed, as a managed resource. This simplifies the code and avoids the calls to clk_disable_unprepare(). While at it, use dev_err_probe consistently, and use its return value to return the error code. Signed-off-by: Anand Moon <linux.amoon@gmail.com> --- drivers/devfreq/exynos-bus.c | 21 ++++----------------- 1 file changed, 4 insertions(+), 17 deletions(-) diff --git a/drivers/devfreq/exynos-bus.c b/drivers/devfreq/exynos-bus.c index 245898f1a88e..153340b6685f 100644 --- a/drivers/devfreq/exynos-bus.c +++ b/drivers/devfreq/exynos-bus.c @@ -160,7 +160,6 @@ static void exynos_bus_exit(struct device *dev) platform_device_unregister(bus->icc_pdev); dev_pm_opp_of_remove_table(dev); - clk_disable_unprepare(bus->clk); dev_pm_opp_put_regulators(bus->opp_token); } @@ -171,7 +170,6 @@ static void exynos_bus_passive_exit(struct device *dev) platform_device_unregister(bus->icc_pdev); dev_pm_opp_of_remove_table(dev); - clk_disable_unprepare(bus->clk); } static int exynos_bus_parent_parse_of(struct device_node *np, @@ -247,23 +245,15 @@ static int exynos_bus_parse_of(struct device_node *np, int ret; /* Get the clock to provide each bus with source clock */ - bus->clk = devm_clk_get(dev, "bus"); - if (IS_ERR(bus->clk)) { - dev_err(dev, "failed to get bus clock\n"); - return PTR_ERR(bus->clk); - } - - ret = clk_prepare_enable(bus->clk); - if (ret < 0) { - dev_err(dev, "failed to get enable clock\n"); - return ret; - } + bus->clk = devm_clk_get_enabled(dev, "bus"); + if (IS_ERR(bus->clk)) + return dev_err_probe(dev, PTR_ERR(bus->clk), "failed to get bus clock\n"); /* Get the freq and voltage from OPP table to scale the bus freq */ ret = dev_pm_opp_of_add_table(dev); if (ret < 0) { dev_err(dev, "failed to get OPP table\n"); - goto err_clk; + return ret; } rate = clk_get_rate(bus->clk); @@ -281,8 +271,6 @@ static int exynos_bus_parse_of(struct device_node *np, err_opp: dev_pm_opp_of_remove_table(dev); -err_clk: - clk_disable_unprepare(bus->clk); return ret; } @@ -453,7 +441,6 @@ static int exynos_bus_probe(struct platform_device *pdev) err: dev_pm_opp_of_remove_table(dev); - clk_disable_unprepare(bus->clk); err_reg: dev_pm_opp_put_regulators(bus->opp_token); -- 2.43.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2024-02-26 18:33 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-02-26 18:32 Anand Moon [this message] 2024-02-26 18:32 ` [PATCHv1 1/2] PM / devfreq: exynos: Use Use devm_clk_get_enabled() helpers Anand Moon 2024-02-26 18:32 ` [PATCHv1 2/2] PM / devfreq: exynos: Switch from CONFIG_PM_SLEEP guards to pm_sleep_ptr() Anand Moon 2024-02-26 18:32 ` Anand Moon
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20240226183308.4730-1-linux.amoon@gmail.com \ --to=linux.amoon@gmail.com \ --cc=alim.akhtar@samsung.com \ --cc=cw00.choi@samsung.com \ --cc=krzysztof.kozlowski@linaro.org \ --cc=kyungmin.park@samsung.com \ --cc=linux-arm-kernel@lists.infradead.org \ --cc=linux-kernel@vger.kernel.org \ --cc=linux-pm@vger.kernel.org \ --cc=linux-samsung-soc@vger.kernel.org \ --cc=myungjoo.ham@samsung.com \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.