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-0800 (PST) Date: Fri, 16 Feb 2024 17:01:47 +0530 From: Manivannan Sadhasivam To: Shradha Todi Cc: linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, mturquette@baylibre.com, sboyd@kernel.org, jingoohan1@gmail.com, lpieralisi@kernel.org, kw@linux.com, robh@kernel.org, bhelgaas@google.com, krzysztof.kozlowski@linaro.org, alim.akhtar@samsung.com, linux@armlinux.org.uk, m.szyprowski@samsung.com, pankaj.dubey@samsung.com, gost.dev@samsung.com Subject: Re: [PATCH v5 1/2] clk: Provide managed helper to get and enable bulk clocks Message-ID: <20240216113147.GF2559@thinkpad> References: <20240213132751.46813-1-shradha.t@samsung.com> <20240213132751.46813-2-shradha.t@samsung.com> Precedence: bulk X-Mailing-List: linux-clk@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20240213132751.46813-2-shradha.t@samsung.com> On Tue, Feb 13, 2024 at 06:57:50PM +0530, Shradha Todi wrote: > Provide a managed devm_clk_bulk* wrapper to get and enable all > bulk clocks in order to simplify drivers that keeps all clocks > enabled for the time of driver operation. > > Suggested-by: Marek Szyprowski > Reviewed-by: Alim Akhtar > Signed-off-by: Shradha Todi Reviewed-by: Manivannan Sadhasivam - Mani > --- > drivers/clk/clk-devres.c | 40 ++++++++++++++++++++++++++++++++++++++++ > include/linux/clk.h | 23 +++++++++++++++++++++++ > 2 files changed, 63 insertions(+) > > diff --git a/drivers/clk/clk-devres.c b/drivers/clk/clk-devres.c > index 4fb4fd4b06bd..cbbd2cc339c3 100644 > --- a/drivers/clk/clk-devres.c > +++ b/drivers/clk/clk-devres.c > @@ -182,6 +182,46 @@ int __must_check devm_clk_bulk_get_all(struct device *dev, > } > EXPORT_SYMBOL_GPL(devm_clk_bulk_get_all); > > +static void devm_clk_bulk_release_all_enable(struct device *dev, void *res) > +{ > + struct clk_bulk_devres *devres = res; > + > + clk_bulk_disable_unprepare(devres->num_clks, devres->clks); > + clk_bulk_put_all(devres->num_clks, devres->clks); > +} > + > +int __must_check devm_clk_bulk_get_all_enable(struct device *dev, > + struct clk_bulk_data **clks) > +{ > + struct clk_bulk_devres *devres; > + int ret; > + > + devres = devres_alloc(devm_clk_bulk_release_all_enable, > + sizeof(*devres), GFP_KERNEL); > + if (!devres) > + return -ENOMEM; > + > + ret = clk_bulk_get_all(dev, &devres->clks); > + if (ret > 0) { > + *clks = devres->clks; > + devres->num_clks = ret; > + } else { > + devres_free(devres); > + return ret; > + } > + > + ret = clk_bulk_prepare_enable(devres->num_clks, *clks); > + if (!ret) { > + devres_add(dev, devres); > + } else { > + clk_bulk_put_all(devres->num_clks, devres->clks); > + devres_free(devres); > + } > + > + return ret; > +} > +EXPORT_SYMBOL_GPL(devm_clk_bulk_get_all_enable); > + > static int devm_clk_match(struct device *dev, void *res, void *data) > { > struct clk **c = res; > diff --git a/include/linux/clk.h b/include/linux/clk.h > index 1ef013324237..85a9330d5a5a 100644 > --- a/include/linux/clk.h > +++ b/include/linux/clk.h > @@ -438,6 +438,22 @@ int __must_check devm_clk_bulk_get_optional(struct device *dev, int num_clks, > int __must_check devm_clk_bulk_get_all(struct device *dev, > struct clk_bulk_data **clks); > > +/** > + * devm_clk_bulk_get_all_enable - Get and enable all clocks of the consumer (managed) > + * @dev: device for clock "consumer" > + * @clks: pointer to the clk_bulk_data table of consumer > + * > + * Returns success (0) or negative errno. > + * > + * This helper function allows drivers to get all clocks of the > + * consumer and enables them in one operation with management. > + * The clks will automatically be disabled and freed when the device > + * is unbound. > + */ > + > +int __must_check devm_clk_bulk_get_all_enable(struct device *dev, > + struct clk_bulk_data **clks); > + > /** > * devm_clk_get - lookup and obtain a managed reference to a clock producer. > * @dev: device for clock "consumer" > @@ -960,6 +976,13 @@ static inline int __must_check devm_clk_bulk_get_all(struct device *dev, > return 0; > } > > +static inline int __must_check devm_clk_bulk_get_all_enable(struct device *dev, > + struct clk_bulk_data **clks) > +{ > + > + return 0; > +} > + > static inline struct clk *devm_get_clk_from_child(struct device *dev, > struct device_node *np, const char *con_id) > { > -- > 2.17.1 > -- மணிவண்ணன் சதாசிவம் From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C452BC48260 for ; Fri, 16 Feb 2024 11:32:13 +0000 (UTC) DKIM-Signature: v=1; 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