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Dong" To: "linux-clk@vger.kernel.org" CC: "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "sboyd@kernel.org" , "mturquette@baylibre.com" , "shawnguo@kernel.org" , Anson Huang , Jacky Bai , dl-linux-imx , "A.s. Dong" , Stephen Boyd Subject: [PATCH V6 5/9] clk: imx: add imx7ulp composite clk support Thread-Topic: [PATCH V6 5/9] clk: imx: add imx7ulp composite clk support Thread-Index: AQHUfBo1nyKTASGGx0KPvEzP7IOh6g== Date: Wed, 14 Nov 2018 13:01:51 +0000 Message-ID: <1542200198-3017-6-git-send-email-aisheng.dong@nxp.com> References: <1542200198-3017-1-git-send-email-aisheng.dong@nxp.com> In-Reply-To: <1542200198-3017-1-git-send-email-aisheng.dong@nxp.com> Accept-Language: zh-CN, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.7.4 x-clientproxiedby: HK0PR01CA0057.apcprd01.prod.exchangelabs.com (2603:1096:203:a6::21) To AM0PR04MB4211.eurprd04.prod.outlook.com (2603:10a6:208:66::21) authentication-results: spf=none (sender IP is ) smtp.mailfrom=aisheng.dong@nxp.com; x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [119.31.174.66] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;AM0PR04MB4291;6:4ZFYnutNFCZ83gcHGBEoFmQVGC61izUsiZDNEhi4OeQgE6R0CyQbSvc6Cc33p5GgsWdmn6XxV7jp4n+ONRoyfUNf+ASVYNVGZ59KotejBUhlWU8bFgUU/Jcd5xlmkvU8t6Ew5LftczGCvzBWaXlXfjdB/4JF5InrCHo+zAvvUJrxv47KGpBL6rzPLdEnlIGPwONjL2ZW6+1ifuRU40wZdTEL9eqbgdrA9HxsOUF/2+Zxb9cNWy1Cke44ahyiWRkmsx2albeAPZML/HVJGz0ytZqYMk+LqIAfF/Iq0H7w0Ih4Xz+cEhwRy/F6WN7/gth3jf+SInaQ7Pf2zCl3cPhtX5YMsd6hVGMbfE9FoB+jVurIkZBrEb4YJWRBIOxq8WARb3f9iIeNPCtfCubBbNjrWzkR5UnuQp8FFvG3YvGR8hnzxIKZYh21OCowPi3IKIaym/e0qV8xxlsu56x65/LQgw==;5:clruvBoarmXjsqs0ZE4BhwPrs0SoSoNoyEEyt2lQ2EFCpFxsfbrlew0GKKgUWd7AXjE0E4WZLCZiDIou4bMpc2cO8N4PxGh/SJljCsfP2HQSb7wRWKHu3bIwvEj2DgkGi1n184UEVvAGwQ2MoDNMAK3+kXzLXrc2xGzmKMcti3g=;7:9IC3kQ16tbkq4+MRWRZJzEFjPMkm7PeCYyBzZBTP2BJ8UDJ2SmVE90Xb3lLYo6hZAqmDb5r4xhRdaxlIUNpPt2MJcZS+HL6n6CaltKAUxHwAbB4svfXu+9sPU8qswuskxpHwdt9ddMjpzXg54QYFGg== x-ms-office365-filtering-correlation-id: 081ae0dc-7073-4225-e539-08d64a315844 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390098)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600074)(711020)(4618075)(2017052603328)(7153060)(7193020);SRVR:AM0PR04MB4291; x-ms-traffictypediagnostic: AM0PR04MB4291: x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:(185117386973197); x-ms-exchange-senderadcheck: 1 x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(8211001083)(6040522)(2401047)(5005006)(8121501046)(93006095)(93001095)(3002001)(3231410)(944501410)(52105112)(10201501046)(6055026)(148016)(149066)(150057)(6041310)(20161123562045)(20161123558120)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(20161123560045)(20161123564045)(201708071742011)(7699051)(76991095);SRVR:AM0PR04MB4291;BCL:0;PCL:0;RULEID:;SRVR:AM0PR04MB4291; x-forefront-prvs: 085634EFF4 x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(396003)(366004)(136003)(376002)(346002)(39860400002)(199004)(189003)(54534003)(476003)(2616005)(11346002)(2906002)(53936002)(486006)(446003)(386003)(52116002)(5640700003)(6512007)(6436002)(2351001)(6486002)(105586002)(305945005)(7736002)(316002)(6506007)(54906003)(106356001)(6116002)(102836004)(99286004)(76176011)(3846002)(81156014)(26005)(5660300001)(186003)(25786009)(86362001)(575784001)(8936002)(97736004)(478600001)(2501003)(66066001)(256004)(71200400001)(71190400001)(81166006)(8676002)(14454004)(6916009)(4326008)(2900100001)(50226002)(36756003)(68736007);DIR:OUT;SFP:1101;SCL:1;SRVR:AM0PR04MB4291;H:AM0PR04MB4211.eurprd04.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;A:1;MX:1; received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: BNhYF3Dm7H/11JQHcIvdBa9GF+GIlHhiyDjE/A//bIRNrMuFjqyDn6mIvGF0/IrhZ8O8KSTZpHMJoTq7A0TO60shyCAyuNsEGwTpQQrWOcH1Ib5DX+cI6Fq8lBZuFTAoPGBG8dCQIK+hrYw+/WKBeEhbmDXtyAjhZvJXDQihTcpkvpT+m74MfuQB9oGK1CTtu9ESZj4JX1jlQnRsH4bbjPAVAyXsZwcBJSwQvLj/AL98AxE8CSy9k/LjsamyBxuY7Q8U+aedbDTaxU9820MQ76ZvG2nDMCb2w1zSxM+181BUb+5wOMi7jKSeWBcAuGCgGb7JVPi3Awb/DgEu4X7U7wjEeDA3DhcxfZbU0yhKGtE= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 081ae0dc-7073-4225-e539-08d64a315844 X-MS-Exchange-CrossTenant-originalarrivaltime: 14 Nov 2018 13:01:51.7239 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB4291 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The imx composite clk is designed for Peripheral Clock Control (PCC) module observed in IMX ULP SoC series. NOTE pcc can only be operated when clk is gated. Cc: Stephen Boyd Cc: Michael Turquette Cc: Shawn Guo Cc: Anson Huang Cc: Bai Ping Signed-off-by: Dong Aisheng --- ChangeLog: v4->v5: * rename to clk-composite-7ulp.c as we have another clk-composite-8m.c, function name also changed accordingly v3->v4: * no changes v2->v3: * no changes v1->v2: * remove an unneeded blank line change * use clk_hw_register --- drivers/clk/imx/Makefile | 1 + drivers/clk/imx/clk-composite-7ulp.c | 85 ++++++++++++++++++++++++++++++++= ++++ drivers/clk/imx/clk.h | 6 +++ 3 files changed, 92 insertions(+) create mode 100644 drivers/clk/imx/clk-composite-7ulp.c diff --git a/drivers/clk/imx/Makefile b/drivers/clk/imx/Makefile index e7248de..a5cab3e 100644 --- a/drivers/clk/imx/Makefile +++ b/drivers/clk/imx/Makefile @@ -4,6 +4,7 @@ obj-y +=3D \ clk.o \ clk-busy.o \ clk-cpu.o \ + clk-composite-7ulp.o \ clk-divider-gate.o \ clk-fixup-div.o \ clk-fixup-mux.o \ diff --git a/drivers/clk/imx/clk-composite-7ulp.c b/drivers/clk/imx/clk-com= posite-7ulp.c new file mode 100644 index 0000000..22f679c --- /dev/null +++ b/drivers/clk/imx/clk-composite-7ulp.c @@ -0,0 +1,85 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (C) 2016 Freescale Semiconductor, Inc. + * Copyright 2017~2018 NXP + * + */ + +#include +#include +#include + +#define PCG_PCS_SHIFT 24 +#define PCG_PCS_MASK 0x7 +#define PCG_CGC_SHIFT 30 +#define PCG_FRAC_SHIFT 3 +#define PCG_FRAC_WIDTH 1 +#define PCG_FRAC_MASK BIT(3) +#define PCG_PCD_SHIFT 0 +#define PCG_PCD_WIDTH 3 +#define PCG_PCD_MASK 0x7 + +struct clk_hw *imx7ulp_clk_composite(const char *name, + const char * const *parent_names, + int num_parents, bool mux_present, + bool rate_present, bool gate_present, + void __iomem *reg) +{ + struct clk_hw *mux_hw =3D NULL, *fd_hw =3D NULL, *gate_hw =3D NULL; + struct clk_fractional_divider *fd =3D NULL; + struct clk_gate *gate =3D NULL; + struct clk_mux *mux =3D NULL; + struct clk_hw *hw; + + if (mux_present) { + mux =3D kzalloc(sizeof(*mux), GFP_KERNEL); + if (!mux) + return ERR_PTR(-ENOMEM); + mux_hw =3D &mux->hw; + mux->reg =3D reg; + mux->shift =3D PCG_PCS_SHIFT; + mux->mask =3D PCG_PCS_MASK; + } + + if (rate_present) { + fd =3D kzalloc(sizeof(*fd), GFP_KERNEL); + if (!fd) { + kfree(mux); + return ERR_PTR(-ENOMEM); + } + fd_hw =3D &fd->hw; + fd->reg =3D reg; + fd->mshift =3D PCG_FRAC_SHIFT; + fd->mwidth =3D PCG_FRAC_WIDTH; + fd->mmask =3D PCG_FRAC_MASK; + fd->nshift =3D PCG_PCD_SHIFT; + fd->nwidth =3D PCG_PCD_WIDTH; + fd->nmask =3D PCG_PCD_MASK; + fd->flags =3D CLK_FRAC_DIVIDER_ZERO_BASED; + } + + if (gate_present) { + gate =3D kzalloc(sizeof(*gate), GFP_KERNEL); + if (!gate) { + kfree(mux); + kfree(fd); + return ERR_PTR(-ENOMEM); + } + gate_hw =3D &gate->hw; + gate->reg =3D reg; + gate->bit_idx =3D PCG_CGC_SHIFT; + } + + hw =3D clk_hw_register_composite(NULL, name, parent_names, num_parents, + mux_hw, &clk_mux_ops, fd_hw, + &clk_fractional_divider_ops, gate_hw, + &clk_gate_ops, CLK_SET_RATE_GATE | + CLK_SET_PARENT_GATE); + if (IS_ERR(hw)) { + kfree(mux); + kfree(fd); + kfree(gate); + } + + return hw; +} diff --git a/drivers/clk/imx/clk.h b/drivers/clk/imx/clk.h index ebeb754..2e3bcfa 100644 --- a/drivers/clk/imx/clk.h +++ b/drivers/clk/imx/clk.h @@ -71,6 +71,12 @@ struct clk *imx_clk_busy_mux(const char *name, void __io= mem *reg, u8 shift, u8 width, void __iomem *busy_reg, u8 busy_shift, const char **parent_names, int num_parents); =20 +struct clk_hw *imx7ulp_clk_composite(const char *name, + const char * const *parent_names, + int num_parents, bool mux_present, + bool rate_present, bool gate_present, + void __iomem *reg); + struct clk *imx_clk_fixup_divider(const char *name, const char *parent, void __iomem *reg, u8 shift, u8 width, void (*fixup)(u32 *val)); --=20 2.7.4