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Wed, 24 Jan 2024 10:38:55 +0000 (GMT) Received: from epsmgmc1p1new.samsung.com (unknown [182.195.42.40]) by epsmtrp2.samsung.com (KnoxPortal) with ESMTP id 20240124103855epsmtrp2a7f6b1794ef3de4fae42c9c2e1221ff7~tQk2h0d2j2380723807epsmtrp2P; Wed, 24 Jan 2024 10:38:55 +0000 (GMT) X-AuditID: b6c32a49-159fd700000025a2-69-65b0f8e2a0ec Received: from epsmtip2.samsung.com ( [182.195.34.31]) by epsmgmc1p1new.samsung.com (Symantec Messaging Gateway) with SMTP id 3F.2E.07368.EB8E0B56; Wed, 24 Jan 2024 19:38:54 +0900 (KST) Received: from cheetah.sa.corp.samsungelectronics.net (unknown [107.109.115.53]) by epsmtip2.samsung.com (KnoxPortal) with ESMTPA id 20240124103852epsmtip251e8ba5a9680c4140a2a0264c5f62669~tQk0CbMz_0276602766epsmtip2a; Wed, 24 Jan 2024 10:38:52 +0000 (GMT) From: Shradha Todi To: 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 Cc: 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, manivannan.sadhasivam@linaro.org, pankaj.dubey@samsung.com, Shradha Todi Subject: [PATCH v4 1/2] clk: Provide managed helper to get and enable bulk clocks Date: Wed, 24 Jan 2024 16:08:37 +0530 Message-Id: <20240124103838.32478-2-shradha.t@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240124103838.32478-1-shradha.t@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrIJsWRmVeSWpSXmKPExsWy7bCmlu6jHxtSDWZdVrd4MG8bm8WSpgyL FV9mslvsfb2V3aKh5zerxabH11gtPvbcY7W4vGsOm8XZecfZLGac38dkcWjqXkaLlj8tLBZr j9xlt7jb0slqcfGUq8WirV/YLf7v2cFu8e/aRhaL3sO1DsIel69dZPZ4f6OV3WPnrLvsHgs2 lXpsWtXJ5nHn2h42jydXpjN5bF5S79G3ZRWjx+dNcgFcUdk2GamJKalFCql5yfkpmXnptkre wfHO8aZmBoa6hpYW5koKeYm5qbZKLj4Bum6ZOUBvKSmUJeaUAoUCEouLlfTtbIryS0tSFTLy i0tslVILUnIKTAr0ihNzi0vz0vXyUkusDA0MjEyBChOyMyYseMZYMEuq4vSGP8wNjHtFuxg5 OCQETCSm7s/oYuTkEBLYzSjROCW3i5ELyP7EKPH4XjczhPONUeJXx3lmkCqQhlMts9kgEnsZ JY59uMAI4bQySTyauY4RpIpNQEui8WsXWLuIwGJGiVs7NrOCOMwCT5gkltz4ywJSJSwQLLGp 9TwbiM0ioCrx/Gs7O4jNK2Al8X76BUaIffISqzccANvNKWAt8fncPrDdEgJHOCR6Nl2FKnKR uN3/nB3CFpZ4dXwLlC0l8fndXjYIO11i5eYZUE/kSHzbvIQJwraXOHBlDgsoNJgFNCXW79KH CMtKTD21DqyEWYBPovf3E6hyXokd82BsZYkvf/ewQNiSEvOOXWaFsD0kls7ohwZeH6PE7etn mCYwys1CWLGAkXEVo2RqQXFuemqxaYFhXmo5PNqS83M3MYLTrpbnDsa7Dz7oHWJk4mA8xCjB wawkwntDcl2qEG9KYmVValF+fFFpTmrxIUZTYABOZJYSTc4HJv68knhDE0sDEzMzMxNLYzND JXHe161zU4QE0hNLUrNTUwtSi2D6mDg4pRqY1CdvzGdmKZXa9uPXVvUyx8KWL0nXatRapnUw rjntFy2wS5V7auPmb+V3fLlfz/nSe3dWO4eWdI+FMm/Ez0bv0vjP+lPD3Pb7Pr8Qd8NfY/Is 677DtdsZ38nMqQ/oYF3pdO382fT7zfN0ZX8FLnj6KOBsTPmu6s9zZs1rqMiXim76Ihjv/3tN QuO+awq77ZfE/Gye7RFodtZ2BWeag0LMmh9JRSa8ir2OfcXmjtPXico92u/Kt8/rmdmdec1y BvO23ljmVXY59P3vtFUtVzrKPnPektmevNIoOsrN/1PeGv4zon+Pzrvevdubq+lPq4vWovPL ZJ6fnsGoxrJF/96mqgMZk3zW31BbwaN9SatFiaU4I9FQi7moOBEAFGUtZ0QEAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrJLMWRmVeSWpSXmKPExsWy7bCSvO6+FxtSDZY9sLR4MG8bm8WSpgyL FV9mslvsfb2V3aKh5zerxabH11gtPvbcY7W4vGsOm8XZecfZLGac38dkcWjqXkaLlj8tLBZr j9xlt7jb0slqcfGUq8WirV/YLf7v2cFu8e/aRhaL3sO1DsIel69dZPZ4f6OV3WPnrLvsHgs2 lXpsWtXJ5nHn2h42jydXpjN5bF5S79G3ZRWjx+dNcgFcUVw2Kak5mWWpRfp2CVwZExY8YyyY JVVxesMf5gbGvaJdjJwcEgImEqdaZrN1MXJxCAnsZpSY92IOG0RCUuLzxXVMELawxMp/z9kh ipqZJGZ9/soCkmAT0JJo/NrFDJIQEVjOKPHz5FMmEIdZ4AuTxKSHu8DahQUCJW5dfwRmswio Sjz/2s4OYvMKWEm8n36BEWKFvMTqDQeYQWxOAWuJz+f2gZ0hBFTzcUYX8wRGvgWMDKsYJVML inPTc5MNCwzzUsv1ihNzi0vz0vWS83M3MYJjQ0tjB+O9+f/0DjEycTAeYpTgYFYS4b0huS5V iDclsbIqtSg/vqg0J7X4EKM0B4uSOK/hjNkpQgLpiSWp2ampBalFMFkmDk6pBqbVU65ssfzs W3j0xv9ZZ8+KnT9bLhwx6aCyi5pSQlLEvotdjw5tWdLNGHtWQ+Qxu1vNpukJW2PErjKbu6ye v7IrevuFjH3TLr5tNdpj7Th9cfl7059r1Tq0Jjr+tdvHc4NV9NOf2f5W/XtX3p+gJZE4j3P1 FIZnuw+a7co4cOFD5HLxHy/UnLiuaih5t5iVlb+cfaLJvf9Qe2eP5iRF5Qdakte+iJpuOVHN 6Bqx2Uqg10NFUyM1q55Dc6nVyvZbLkwLKrNWrDBbv+6EK+e/krhV3gKPBG+ufz/XS+LSzYq0 omO3JW5pym7XrbgaFF3yP4ZDY0kmw6PZDg3xEve6xQpeKu5vFTqYYef14oHVnCYlluKMREMt 5qLiRABSbpLx/AIAAA== X-CMS-MailID: 20240124103855epcas5p27400bd95df42f36b9547a4e28aa26f5d X-Msg-Generator: CA X-Sendblock-Type: REQ_APPROVE CMS-TYPE: 105P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20240124103855epcas5p27400bd95df42f36b9547a4e28aa26f5d References: <20240124103838.32478-1-shradha.t@samsung.com> Precedence: bulk X-Mailing-List: linux-samsung-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: 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 Signed-off-by: Shradha Todi --- drivers/clk/clk-devres.c | 40 ++++++++++++++++++++++++++++++++++++++++ include/linux/clk.h | 24 ++++++++++++++++++++++++ 2 files changed, 64 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..a005e709b7bd 100644 --- a/include/linux/clk.h +++ b/include/linux/clk.h @@ -438,6 +438,23 @@ 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 - managed get multiple clk consumers and + * enable all clks + * @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 several clk + * consumers and enable all of 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 +977,13 @@ 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) { From patchwork Wed Jan 24 10:38:38 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shradha Todi X-Patchwork-Id: 765884 Received: from mailout1.samsung.com (mailout1.samsung.com [203.254.224.24]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C9F9B50A8D for ; Wed, 24 Jan 2024 11:47:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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Wed, 24 Jan 2024 19:38:58 +0900 (KST) Received: from cheetah.sa.corp.samsungelectronics.net (unknown [107.109.115.53]) by epsmtip2.samsung.com (KnoxPortal) with ESMTPA id 20240124103856epsmtip275efcd054daeee22b3bed82e32cb3581~tQk3mXvg50212502125epsmtip2r; Wed, 24 Jan 2024 10:38:56 +0000 (GMT) From: Shradha Todi To: 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 Cc: 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, manivannan.sadhasivam@linaro.org, pankaj.dubey@samsung.com, Shradha Todi Subject: [PATCH v4 2/2] PCI: exynos: Adapt to clk_bulk_* APIs Date: Wed, 24 Jan 2024 16:08:38 +0530 Message-Id: <20240124103838.32478-3-shradha.t@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240124103838.32478-1-shradha.t@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA0VSf0xbVRTO7Y/3CkvJs3R4aeLEtxkFAvQhrZcJSByal4DIpgsZOtlL+9IS ymttCxPNYmUUhUCzMedggYZIN5A5ZAU2QECEKopsg/Ej6AZ2g5lsJAMsQ7NZsbRF//vOd75z vnPuPSK+pBOTiQo4M2vkGB2JhQouj0RHx937q4OV19ZGI7f9MoYcZVrUul6Po4HlbhxZqh8L kXNxVojWqheEaKqvAUNX7aMYqrs+yEPDpwcAKv+7XIAuuuZxNF9eKUSTY6+iL7rXcbTZ34Oj f2YvCVDNyLH0cHpqdpJPr8xZcbr37DxONzmLaWdbJUbfmu3H6KXpMzy60/ERbetqA7THuSsn NK8wRcsyatYYxXIqvbqA06SSmW/m78tXKOVUHJWMXiSjOKaITSUzsnLiXivQ+dYio0oYXbGP ymFMJjIhLcWoLzazUVq9yZxKsga1zpBkiDcxRaZiThPPsea9lFyeqPAJjxRqr1ivCA1nIt// ybWJWcBdaRUIEUEiCS5bJ4VVIFQkIfoBtFTP4IHgDwA/Xf0ZCwQbAP7mquFvlzRYWoOJAQCn PukTBAIrD7Z0tfhVGBEDP35Yxd9KSIlmAH/t6fS78IklHnTMeQVbqnAiFS4vVuBbWEA8C+vt LmwLi4m9cPT8Ci/g9zS80DHk7xpCvAQ91wb93pAYEsHK3gVBQJQB1xrdWACHw/ujXXgAy6Dn wUCQ18AvO+uCS+jgRqcjaPAyHJpu8PUR+aaLhl/3JQTop+DpsXa/hE+EwZrHS0G5GPbYt/Fu uO7tD44QCe0/TAkDmIYVG/f9thLCBmD71ZgTYNfZ/x2aAGgDMtZgKtKwKoWBiuPYo/99nEpf 5AT+643J6QEXOrzxw4AnAsMAivikVDwX2c5KxGqm9APWqM83FutY0zBQ+B7wJF+2U6X3nT9n zqeSkuVJSqUyKfkFJUU+KV62NqolhIYxs4Usa2CN23U8UYjMwjsxVfTEO7ltLZ5waoH2DGRf qrJkZpeZp6sSbIN5herPZ93HZFnpG9IfqbCj76LY7mzFwW/HDP2vRO1fM7jcm5uP3HWxitam MtVz3/1pXclQSWe8E/Xf6J/pjp7I0qxJv08WNdu4zZGa8dTaHQm73afiJQ8jfu/FG0sdNyPE i4m5X73XdJiqWB2H5xzGu/sr7Exedq4i8+Dx5/e1cecj5HbSg5K9rkeSUs0BodH74duuN7S/ NISVfGbLvXHRVNkNZl6PTbl3pzbl8J5raXjPQheVfmj9dtqB9ZvXJTcybKsT3mXnyZL6O3ua p8+VV0rGH8TsOC6OvLVTeeR24qEZ3PYWKTBpGSqGbzQx/wLnoUQZRgQAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrJLMWRmVeSWpSXmKPExsWy7bCSvO6hFxtSDRra9S0ezNvGZrGkKcNi xZeZ7BZ7X29lt2jo+c1qsenxNVaLjz33WC0u75rDZnF23nE2ixnn9zFZHJq6l9Gi5U8Li8Xa I3fZLe62dLJaXDzlarFo6xd2i/97drBb/Lu2kcWi93Ctg7DH5WsXmT3e32hl99g56y67x4JN pR6bVnWyedy5tofN48mV6Uwem5fUe/RtWcXo8XmTXABXFJdNSmpOZllqkb5dAlfG9tbtrAXT JStOHvnP1sD4VKSLkZNDQsBEYk7DCrYuRi4OIYHdjBLP119ggUhISny+uI4JwhaWWPnvOTtE UTOTRMvc1WwgCTYBLYnGr13MIAkRgeWMEj9PPmUCcZgFvjBJTHq4C6xdWMBW4vXjNnYQm0VA VWLmvCNg3bwCVhLHl72HWiEvsXrDAWYQm1PAWuLzuX1gNUJANR9ndDFPYORbwMiwilEytaA4 Nz032bDAMC+1XK84Mbe4NC9dLzk/dxMjODa0NHYw3pv/T+8QIxMH4yFGCQ5mJRHeG5LrUoV4 UxIrq1KL8uOLSnNSiw8xSnOwKInzGs6YnSIkkJ5YkpqdmlqQWgSTZeLglGpgWnb4duyNfm2X 0uapQkuj/jF4qEta7rj4S/rNpYcXlGs1gj/lXnLSXT237xU/N5enfOz/Hw1sR9a81OAsWlEo wMBx6YvZYYlLTjxW1l2zL2d9MMyV/1rb/HHFenb/4K5ylbIdd3ZGSt0I/CLWvIRVVtR9kpj+ fE6/BXcnSk/cPfVG1XK2/e2LlCdtvbnx+aRD6afvfru7VvKiyJ+Zx9h270jLZyk5csh6kWqu 0bFzN057FWye9Gn+0R+89wVPKhxc89zaVcGYh+XcocN6SpdfKAccCjKer3GzYHvnKemShowb kepsU9V7TbyKlx75Wli44qG1+PGOvV7zr/802fRVx7CoN5fn4uUfGq5cWl2705VYijMSDbWY i4oTAfzz9zX8AgAA X-CMS-MailID: 20240124103858epcas5p3d96cdbe8a6c8f31ccc934025411a09b8 X-Msg-Generator: CA X-Sendblock-Type: REQ_APPROVE CMS-TYPE: 105P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20240124103858epcas5p3d96cdbe8a6c8f31ccc934025411a09b8 References: <20240124103838.32478-1-shradha.t@samsung.com> Precedence: bulk X-Mailing-List: linux-samsung-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: There is no need to hardcode the clock info in the driver as driver can rely on the devicetree to supply the clocks required for the functioning of the peripheral. Get rid of the static clock info and obtain the platform supplied clocks. All the clocks supplied is obtained and enabled using the devm_clk_bulk_get_all_enable() API. Signed-off-by: Shradha Todi Reviewed-by: Manivannan Sadhasivam --- drivers/pci/controller/dwc/pci-exynos.c | 54 ++----------------------- 1 file changed, 4 insertions(+), 50 deletions(-) diff --git a/drivers/pci/controller/dwc/pci-exynos.c b/drivers/pci/controller/dwc/pci-exynos.c index ec5611005566..3234eb5be1fb 100644 --- a/drivers/pci/controller/dwc/pci-exynos.c +++ b/drivers/pci/controller/dwc/pci-exynos.c @@ -54,43 +54,11 @@ struct exynos_pcie { struct dw_pcie pci; void __iomem *elbi_base; - struct clk *clk; - struct clk *bus_clk; + struct clk_bulk_data *clks; struct phy *phy; struct regulator_bulk_data supplies[2]; }; -static int exynos_pcie_init_clk_resources(struct exynos_pcie *ep) -{ - struct device *dev = ep->pci.dev; - int ret; - - ret = clk_prepare_enable(ep->clk); - if (ret) { - dev_err(dev, "cannot enable pcie rc clock"); - return ret; - } - - ret = clk_prepare_enable(ep->bus_clk); - if (ret) { - dev_err(dev, "cannot enable pcie bus clock"); - goto err_bus_clk; - } - - return 0; - -err_bus_clk: - clk_disable_unprepare(ep->clk); - - return ret; -} - -static void exynos_pcie_deinit_clk_resources(struct exynos_pcie *ep) -{ - clk_disable_unprepare(ep->bus_clk); - clk_disable_unprepare(ep->clk); -} - static void exynos_pcie_writel(void __iomem *base, u32 val, u32 reg) { writel(val, base + reg); @@ -332,17 +300,9 @@ static int exynos_pcie_probe(struct platform_device *pdev) if (IS_ERR(ep->elbi_base)) return PTR_ERR(ep->elbi_base); - ep->clk = devm_clk_get(dev, "pcie"); - if (IS_ERR(ep->clk)) { - dev_err(dev, "Failed to get pcie rc clock\n"); - return PTR_ERR(ep->clk); - } - - ep->bus_clk = devm_clk_get(dev, "pcie_bus"); - if (IS_ERR(ep->bus_clk)) { - dev_err(dev, "Failed to get pcie bus clock\n"); - return PTR_ERR(ep->bus_clk); - } + ret = devm_clk_bulk_get_all_enable(dev, &ep->clks); + if (ret < 0) + return ret; ep->supplies[0].supply = "vdd18"; ep->supplies[1].supply = "vdd10"; @@ -351,10 +311,6 @@ static int exynos_pcie_probe(struct platform_device *pdev) if (ret) return ret; - ret = exynos_pcie_init_clk_resources(ep); - if (ret) - return ret; - ret = regulator_bulk_enable(ARRAY_SIZE(ep->supplies), ep->supplies); if (ret) return ret; @@ -369,7 +325,6 @@ static int exynos_pcie_probe(struct platform_device *pdev) fail_probe: phy_exit(ep->phy); - exynos_pcie_deinit_clk_resources(ep); regulator_bulk_disable(ARRAY_SIZE(ep->supplies), ep->supplies); return ret; @@ -383,7 +338,6 @@ static int __exit exynos_pcie_remove(struct platform_device *pdev) exynos_pcie_assert_core_reset(ep); phy_power_off(ep->phy); phy_exit(ep->phy); - exynos_pcie_deinit_clk_resources(ep); regulator_bulk_disable(ARRAY_SIZE(ep->supplies), ep->supplies); return 0;