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Tue, 20 Feb 2024 08:41:20 +0000 (GMT) Received: from epsmgmc1p1new.samsung.com (unknown [182.195.42.40]) by epsmtrp2.samsung.com (KnoxPortal) with ESMTP id 20240220084120epsmtrp29fe4a883c07fd71c9d95ce8b01da3ae9~1hY6KaaLR1209712097epsmtrp2S; Tue, 20 Feb 2024 08:41:20 +0000 (GMT) X-AuditID: b6c32a4b-60bfd700000025c8-f0-65d48b329a2e Received: from epsmtip1.samsung.com ( [182.195.34.30]) by epsmgmc1p1new.samsung.com (Symantec Messaging Gateway) with SMTP id E9.8B.07368.0B564D56; Tue, 20 Feb 2024 17:41:20 +0900 (KST) Received: from cheetah.sa.corp.samsungelectronics.net (unknown [107.109.115.53]) by epsmtip1.samsung.com (KnoxPortal) with ESMTPA id 20240220084118epsmtip1ddb341e7fee780d897731ff35c16f49b~1hY3kkhI_3013230132epsmtip1G; Tue, 20 Feb 2024 08:41:18 +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, gost.dev@samsung.com, Shradha Todi Subject: [PATCH v6 1/2] clk: Provide managed helper to get and enable bulk clocks Date: Tue, 20 Feb 2024 14:10:45 +0530 Message-Id: <20240220084046.23786-2-shradha.t@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240220084046.23786-1-shradha.t@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrGJsWRmVeSWpSXmKPExsWy7bCmhq5R95VUg4NHVSwezNvGZrGkKcPi 5oGdTBYrvsxkt9j7eiu7RUPPb1aLTY+vsVp87LnHanF51xw2i7PzjrNZzDi/j8ni0NS9jBYt f1pYLNYeuctucbelk9Xi4ilXi0Vbv7Bb/N+zg93i37WNLBa9h2sdRDwuX7vI7PH+Riu7x85Z d9k9Fmwq9di0qpPN4861PWweT65MZ/LYvKTeo2/LKkaPz5vkAriism0yUhNTUosUUvOS81My 89JtlbyD453jTc0MDHUNLS3MlRTyEnNTbZVcfAJ03TJzgH5TUihLzCkFCgUkFhcr6dvZFOWX lqQqZOQXl9gqpRak5BSYFOgVJ+YWl+al6+WlllgZGhgYmQIVJmRnrH7fwlzQJF0x5+c+pgbG pWJdjJwcEgImElMWX2ABsYUEdjNKXN0m2MXIBWR/YpS4/ew8C4TzjVHiweX17DAdmxb8YYJI 7GWU2LVgJTOE08ok0fl2OzNIFZuAlkTj1y6whIjAYkaJWzs2s4I4zAK/mCT2NW5iAqkSFgiW uPDlINhcFgFVidWvtoLZvAJWEt8mbILaJy+xesMBoEkcHJwC1hJXl2WCzJEQOMEhMX/ZSVaI GheJc7sesUHYwhKvjm+B6pWS+PxuL1Q8XWLl5hnMEHaOxLfNS5ggbHuJA1fmsIDMZxbQlFi/ Sx8iLCsx9dQ6sBJmAT6J3t9PoMp5JXbMg7GVJb783cMCYUtKzDt2GeocD4nZf0+xQ0Klj1Hi c+dCxgmMcrMQVixgZFzFKJlaUJybnlpsWmCcl1oOj7bk/NxNjOAErOW9g/HRgw96hxiZOBgP MUpwMCuJ8LKUX0kV4k1JrKxKLcqPLyrNSS0+xGgKDL+JzFKiyfnAHJBXEm9oYmlgYmZmZmJp bGaoJM77unVuipBAemJJanZqakFqEUwfEwenVAMT07RtZipe8SYXOldyZy1bpqXIn3XSbpHV rZMf3bfc1xZ9tVuzNJXN2u/JlL7nXDWztb9r1zlPzGud8b7+u6GylLRB9ek9O18bWPuu73pS q2RSK1rbVikemGP+4sSLB3VLkhx3eWw7V5MtMLN9h43LvOiN1w45r0+qnf18YSIn3yqfq+e/ fp7ponspOvC9xKowk+nfK8R5WWW4uadJv/FfN2XxrdkL861Efm6Ie8Y8q+XjEW6bvn7za0// SSreTeOuUGd/deTOwVkLJkal7Wm5PXWanr3af8cJCjpX2qyv3964xVD6C+e7rK8m7WfSJt4q O/+an/Hh23+GUVMjj8ytvnp0ytpzMd+vRvcGvStxVWIpzkg01GIuKk4EAKmgospJBAAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrNLMWRmVeSWpSXmKPExsWy7bCSnO6G1CupBr+Omlg8mLeNzWJJU4bF zQM7mSxWfJnJbrH39VZ2i4ae36wWmx5fY7X42HOP1eLyrjlsFmfnHWezmHF+H5PFoal7GS1a /rSwWKw9cpfd4m5LJ6vFxVOuFou2fmG3+L9nB7vFv2sbWSx6D9c6iHhcvnaR2eP9jVZ2j52z 7rJ7LNhU6rFpVSebx51re9g8nlyZzuSxeUm9R9+WVYwenzfJBXBFcdmkpOZklqUW6dslcGWs ft/CXNAkXTHn5z6mBsalYl2MnBwSAiYSmxb8Yepi5OIQEtjNKLH9/B42iISkxOeL65ggbGGJ lf+es4PYQgLNTBIrG8BsNgEticavXcwgzSICyxklfp58CtbALNDDLHGgNQTEFhYIlNjZuRBs KIuAqsTqV1vBmnkFrCS+TdjEDrFAXmL1hgNAgzg4OAWsJa4uy4TYZSXx/+Eu5gmMfAsYGVYx SqYWFOem5yYbFhjmpZbrFSfmFpfmpesl5+duYgTHh5bGDsZ78//pHWJk4mA8xCjBwawkwuve dCFViDclsbIqtSg/vqg0J7X4EKM0B4uSOK/hjNkpQgLpiSWp2ampBalFMFkmDk6pBiaD4tXd rgzzDd+ddt7neLCTbfHNzfbiHRkahkf0N/u+M3ziteDfiZmGn3vTYxfueZCm2zxn+pRtW/yX PFm3RbWzP99E/Uvsj88+578LvpyRZr4qwGTPphK3eVczfyedTVLdKFl96t33oynZv3+7iTRL yU3k9OxbV6lntrnggF/B6U8zNabprQyfrC3SKnwgwTvwv9bt93Pi2GQ2PHq2IkSzuFvTJTD+ wf/6ZDW/KTrKrXs3t8yY+C7dcskx3QMfhDREz5nPd/zLx1/XLcw3q3lH+41FkeYXLpx1FVnh 8mz5/gCV4pzK6FapzPuGGR9vsqdlTMkwiZ4tWXg5bHdq2r3iqW9/JvcZzIv6G5THPU2JpTgj 0VCLuag4EQDPjVxx/gIAAA== X-CMS-MailID: 20240220084120epcas5p1e8980539667c3d9da20f49fc645d8f4c X-Msg-Generator: CA X-Sendblock-Type: REQ_APPROVE CMS-TYPE: 105P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20240220084120epcas5p1e8980539667c3d9da20f49fc645d8f4c References: <20240220084046.23786-1-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 Reviewed-by: Alim Akhtar Reviewed-by: Manivannan Sadhasivam Signed-off-by: Shradha Todi --- drivers/clk/clk-devres.c | 40 ++++++++++++++++++++++++++++++++++++++++ include/linux/clk.h | 22 ++++++++++++++++++++++ 2 files changed, 62 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..a8e6b045b848 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 +976,12 @@ 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 Tue Feb 20 08:40:46 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shradha Todi X-Patchwork-Id: 13563892 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 4D7E765BDF for ; Tue, 20 Feb 2024 11:21:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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Tue, 20 Feb 2024 17:41:25 +0900 (KST) Received: from cheetah.sa.corp.samsungelectronics.net (unknown [107.109.115.53]) by epsmtip1.samsung.com (KnoxPortal) with ESMTPA id 20240220084122epsmtip15bf359fa9d7cb4279eec9634a592a933~1hY7vkWrA2980029800epsmtip19; Tue, 20 Feb 2024 08:41:22 +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, gost.dev@samsung.com, Shradha Todi Subject: [PATCH v6 2/2] PCI: exynos: Adapt to clk_bulk_* APIs Date: Tue, 20 Feb 2024 14:10:46 +0530 Message-Id: <20240220084046.23786-3-shradha.t@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240220084046.23786-1-shradha.t@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA0VSbUxTVxjeubftLSDmho/sWAKSK2YDB7YK9aAyNXNwF1lGZrZs+wHc0ZuW UG5rW4YzqHwjCAwIIjKobKtk8jVpwSFfw0qEwHAj1AIbMARD5lgYXwM3JqylsP17zvs8z/vk fc8rxN2aBSJhPKdjNRyjpATOvLsP/F8NRFctrHig6wCa0t8VIEO6Ao1138PQ1ys3CNQ510Kg 1Px1PjLOWPloMX+Sj4bbKgVoUN8rQOU/dGHIfK0ToMx/MnmooWeCQBOZuXw01P8m+rJlhUCb Ha0E2rA28VDBg4snPehh6xBO/zGaRdD3KiYIutqYRBtrcwX0uLVDQD+1XMdok+EyXdhcC+hl o0+U80cJxxUsI2M1viwXp5LFc/Iw6szZmDdiQqRiSaAkFB2hfDkmkQ2jTkdGBYbHK22zUb6f MMokWymK0Wqpg68f16iSdKyvQqXVhVGsWqZUB6uDtEyiNomTB3Gs7qhELD4UYhPGJihKy1YJ dYno/OD8piAVWD3zgJMQksFwUz/NywPOQjeyHcDNdgtmJ9zIJQDHBwIcxCqAT17c5u04+grm gUPUCWBltrtDlIXBovblLUJABsC0P/NwO+FBfgXgT60mvv2Bk39jsCvNuJXhTobBxYJ2wo55 5H5oMudsRbiSR+H9H+sIR9xeWHen29ZJKHQij8HHNfH2PpDsE8KloVHMXofkaTh55bxD7g5/ 623etorgs8+yt7Ec3jaV4w6shKsmA+bAJ2C3pZJnb4OT/vCbtoOOsje81t+4JcHJ3bBg/em2 3BW26nfwPrjyomN7KXug/uEw34Fp+G32DOZYSiGAyzcbsSLgU/F/RDUAtWAPq9YmylltiPow xyb/92lxqkQj2DrfgDOtYHpqIcgMMCEwAyjEKQ9XXrKFdXOVMZ9eYDWqGE2SktWaQYhtfcW4 yDNOZbt/ThcjCQ4VB0ul0uDQw1IJ9bLrXFaVzI2UMzo2gWXVrGbHhwmdRKlYW1nEr48+n11a 6jbcqE/I0ZlGqlpkordgbl3FsZGpI7pD+VGd84w40YuwFK0PFFH1PQcGv9eeuETMPg+JGRrb PzJ7Ls0/4701n56L+7jXcudPqcMvtLTGpecZXHaNNJaUPKci12bmijMiX/nLJXZDNFhWslHs svDhz3JkvlVzyW/wCd5354NfSpmo5KVzp1Lun37MBo13+ZWvYZNh61zEcM3Vh1/ELvTcbGjb ndH//q5ZPRdg2NvkIpgOX/A+m0JPvWNQpLQ/ip6JriqMPvmuR46XOeLWaNnas14xWGyUDkut 9XVE6pX6y5uN34lxv4aPS5sYL89VakzyUvXv6Q3eI29TPK2CkQTgGi3zLzlS0stHBAAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrNLMWRmVeSWpSXmKPExsWy7bCSnO7W1CupBuuOiVg8mLeNzWJJU4bF zQM7mSxWfJnJbrH39VZ2i4ae36wWmx5fY7X42HOP1eLyrjlsFmfnHWezmHF+H5PFoal7GS1a /rSwWKw9cpfd4m5LJ6vFxVOuFou2fmG3+L9nB7vFv2sbWSx6D9c6iHhcvnaR2eP9jVZ2j52z 7rJ7LNhU6rFpVSebx51re9g8nlyZzuSxeUm9R9+WVYwenzfJBXBFcdmkpOZklqUW6dslcGVM mfaNvWCSVMXZd//ZGhiviXYxcnJICJhInOh9xwhiCwnsZpR4fFoEIi4p8fniOiYIW1hi5b/n 7F2MXEA1zUwS6/bsYAZJsAloSTR+7WIGSYgILGeU+HnyKVgHs0APs8SB1hAQW1jAVuJj7252 EJtFQFVi86F2FhCbV8BK4uCF1ewQG+QlVm84ADSIg4NTwFri6rJMiIOsJP4/3MU8gZFvASPD KkbJ1ILi3PTcYsMCo7zUcr3ixNzi0rx0veT83E2M4PjQ0trBuGfVB71DjEwcjIcYJTiYlUR4 3ZsupArxpiRWVqUW5ccXleakFh9ilOZgURLn/fa6N0VIID2xJDU7NbUgtQgmy8TBKdXA1NFv tvDENo2ZO6sZ5K9P9507q6d41+E0K75L7XkvCrVrhfl5hGZOFDYOz1HevrsgLFRDZeW6G74X pyxrviG9iH1l1BKLtcunJHTkvjrr9l3VVyzGOSBkV0fPgs4HIfGNs96/WCPrLclrocP8qXMn l5Z3c2eV7DXJ5emWQWrmf2VZI5+17JKrXbUmUmIO1z4pgVLWDVIHHHZuXLdyg+sM3YYX/y5u kl64f/+211P6LC4E/MtY9a8pj8G6xynpR/TbvWK2/MYp78+tjFa4Nami+LXxV1ctZr4t6z13 HwnccenPr8Vic36pMmyLOHdshvCCB5XcG3bMCD0hslv9od25rhb788p2PN1fVhpXdZslKbEU ZyQaajEXFScCAHzCl+P+AgAA X-CMS-MailID: 20240220084125epcas5p28c6d886685006800fc26c11918d5d1dd X-Msg-Generator: CA X-Sendblock-Type: REQ_APPROVE CMS-TYPE: 105P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20240220084125epcas5p28c6d886685006800fc26c11918d5d1dd References: <20240220084046.23786-1-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. Reviewed-by: Manivannan Sadhasivam Reviewed-by: Alim Akhtar Signed-off-by: Shradha Todi --- 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;