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Fri, 23 Aug 2024 03:51:34 +0000 Received: from SI2PR06MB5140.apcprd06.prod.outlook.com ([fe80::468a:88be:bec:666]) by SI2PR06MB5140.apcprd06.prod.outlook.com ([fe80::468a:88be:bec:666%6]) with mapi id 15.20.7897.014; Fri, 23 Aug 2024 03:51:34 +0000 From: Rong Qianfeng To: biju.das.jz@bp.renesas.com, Wolfram Sang , Andi Shyti , Paul Cercueil , linux-renesas-soc@vger.kernel.org, linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org Cc: opensource.kernel@vivo.com, Rong Qianfeng Subject: [PATCH v3 1/4] i2c: emev2: Use devm_clk_get_enabled() helpers Date: Fri, 23 Aug 2024 11:51:13 +0800 Message-Id: <20240823035116.21590-2-rongqianfeng@vivo.com> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20240823035116.21590-1-rongqianfeng@vivo.com> References: <20240823035116.21590-1-rongqianfeng@vivo.com> X-ClientProxiedBy: TY2PR02CA0061.apcprd02.prod.outlook.com (2603:1096:404:e2::25) To SI2PR06MB5140.apcprd06.prod.outlook.com (2603:1096:4:1af::9) Precedence: bulk X-Mailing-List: linux-renesas-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SI2PR06MB5140:EE_|TYZPR06MB5949:EE_ X-MS-Office365-Filtering-Correlation-Id: 0e3f713e-a081-4bfd-1c09-08dcc326e1d1 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|1800799024|366016|52116014|38350700014; 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This simplifies the code and avoids the calls to clk_disable_unprepare(). Signed-off-by: Rong Qianfeng --- drivers/i2c/busses/i2c-emev2.c | 17 ++++------------- 1 file changed, 4 insertions(+), 13 deletions(-) diff --git a/drivers/i2c/busses/i2c-emev2.c b/drivers/i2c/busses/i2c-emev2.c index 557409410445..20efe0b0cb85 100644 --- a/drivers/i2c/busses/i2c-emev2.c +++ b/drivers/i2c/busses/i2c-emev2.c @@ -373,14 +373,10 @@ static int em_i2c_probe(struct platform_device *pdev) strscpy(priv->adap.name, "EMEV2 I2C", sizeof(priv->adap.name)); - priv->sclk = devm_clk_get(&pdev->dev, "sclk"); + priv->sclk = devm_clk_get_enabled(&pdev->dev, "sclk"); if (IS_ERR(priv->sclk)) return PTR_ERR(priv->sclk); - ret = clk_prepare_enable(priv->sclk); - if (ret) - return ret; - priv->adap.timeout = msecs_to_jiffies(100); priv->adap.retries = 5; priv->adap.dev.parent = &pdev->dev; @@ -397,26 +393,22 @@ static int em_i2c_probe(struct platform_device *pdev) ret = platform_get_irq(pdev, 0); if (ret < 0) - goto err_clk; + return ret; priv->irq = ret; ret = devm_request_irq(&pdev->dev, priv->irq, em_i2c_irq_handler, 0, "em_i2c", priv); 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Signed-off-by: Rong Qianfeng Reviewed-by: Biju Das --- drivers/i2c/busses/i2c-emev2.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/i2c/busses/i2c-emev2.c b/drivers/i2c/busses/i2c-emev2.c index 20efe0b0cb85..2a5d9d658246 100644 --- a/drivers/i2c/busses/i2c-emev2.c +++ b/drivers/i2c/busses/i2c-emev2.c @@ -67,7 +67,6 @@ struct em_i2c_device { void __iomem *base; struct i2c_adapter adap; struct completion msg_done; - struct clk *sclk; struct i2c_client *slave; int irq; }; @@ -361,6 +360,7 @@ static const struct i2c_algorithm em_i2c_algo = { static int em_i2c_probe(struct platform_device *pdev) { struct em_i2c_device *priv; + struct clk *sclk; int ret; priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); @@ -373,9 +373,9 @@ static int em_i2c_probe(struct platform_device *pdev) strscpy(priv->adap.name, "EMEV2 I2C", sizeof(priv->adap.name)); - priv->sclk = devm_clk_get_enabled(&pdev->dev, "sclk"); - if (IS_ERR(priv->sclk)) - return PTR_ERR(priv->sclk); 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Fri, 23 Aug 2024 03:51:44 +0000 Received: from SI2PR06MB5140.apcprd06.prod.outlook.com ([fe80::468a:88be:bec:666]) by SI2PR06MB5140.apcprd06.prod.outlook.com ([fe80::468a:88be:bec:666%6]) with mapi id 15.20.7897.014; Fri, 23 Aug 2024 03:51:44 +0000 From: Rong Qianfeng To: biju.das.jz@bp.renesas.com, Wolfram Sang , Andi Shyti , Paul Cercueil , linux-renesas-soc@vger.kernel.org, linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org Cc: opensource.kernel@vivo.com, Rong Qianfeng Subject: [PATCH v3 3/4] i2c: jz4780: Use devm_clk_get_enabled() helpers Date: Fri, 23 Aug 2024 11:51:15 +0800 Message-Id: <20240823035116.21590-4-rongqianfeng@vivo.com> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20240823035116.21590-1-rongqianfeng@vivo.com> References: <20240823035116.21590-1-rongqianfeng@vivo.com> X-ClientProxiedBy: TY2PR02CA0061.apcprd02.prod.outlook.com (2603:1096:404:e2::25) To SI2PR06MB5140.apcprd06.prod.outlook.com (2603:1096:4:1af::9) Precedence: bulk X-Mailing-List: linux-renesas-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SI2PR06MB5140:EE_|TYZPR06MB5949:EE_ X-MS-Office365-Filtering-Correlation-Id: aad497a7-c2d3-4751-11bc-08dcc326e797 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|1800799024|366016|52116014|38350700014; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: vivo.com X-MS-Exchange-CrossTenant-Network-Message-Id: aad497a7-c2d3-4751-11bc-08dcc326e797 X-MS-Exchange-CrossTenant-AuthSource: SI2PR06MB5140.apcprd06.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Aug 2024 03:51:44.3054 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 923e42dc-48d5-4cbe-b582-1a797a6412ed X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: DTUbGuMnDAQfEHrCbRHavOUIrRqSar9biArMErdMnAS6W34ftRX3WRsPi0WT4N6gempAo4tskWsF5S3h06gNrw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: TYZPR06MB5949 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, no more special handling needed here, remove the goto label "err:". Signed-off-by: Rong Qianfeng Acked-by: Paul Cercueil --- drivers/i2c/busses/i2c-jz4780.c | 21 ++++++--------------- 1 file changed, 6 insertions(+), 15 deletions(-) diff --git a/drivers/i2c/busses/i2c-jz4780.c b/drivers/i2c/busses/i2c-jz4780.c index 4aafdfab6305..f5362c5dfb50 100644 --- a/drivers/i2c/busses/i2c-jz4780.c +++ b/drivers/i2c/busses/i2c-jz4780.c @@ -792,26 +792,22 @@ static int jz4780_i2c_probe(struct platform_device *pdev) platform_set_drvdata(pdev, i2c); - i2c->clk = devm_clk_get(&pdev->dev, NULL); + i2c->clk = devm_clk_get_enabled(&pdev->dev, NULL); if (IS_ERR(i2c->clk)) return PTR_ERR(i2c->clk); - ret = clk_prepare_enable(i2c->clk); - if (ret) - return ret; - ret = of_property_read_u32(pdev->dev.of_node, "clock-frequency", &clk_freq); if (ret) { dev_err(&pdev->dev, "clock-frequency not specified in DT\n"); - goto err; + return ret; } i2c->speed = clk_freq / 1000; if (i2c->speed == 0) { ret = -EINVAL; dev_err(&pdev->dev, "clock-frequency minimum is 1000\n"); - goto err; 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Signed-off-by: Rong Qianfeng --- drivers/i2c/busses/i2c-jz4780.c | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-) diff --git a/drivers/i2c/busses/i2c-jz4780.c b/drivers/i2c/busses/i2c-jz4780.c index f5362c5dfb50..0cb52a6d05b5 100644 --- a/drivers/i2c/busses/i2c-jz4780.c +++ b/drivers/i2c/busses/i2c-jz4780.c @@ -798,17 +798,15 @@ static int jz4780_i2c_probe(struct platform_device *pdev) ret = of_property_read_u32(pdev->dev.of_node, "clock-frequency", &clk_freq); - if (ret) { - dev_err(&pdev->dev, "clock-frequency not specified in DT\n"); - return ret; - } + if (ret) + return dev_err_probe(&pdev->dev, ret, + "clock-frequency not specified in DT\n"); i2c->speed = clk_freq / 1000; - if (i2c->speed == 0) { - ret = -EINVAL; - dev_err(&pdev->dev, "clock-frequency minimum is 1000\n"); - return ret; - } + if (i2c->speed == 0) + return dev_err_probe(&pdev->dev, -EINVAL, + "clock-frequency minimum is 1000\n"); + jz4780_i2c_set_speed(i2c); dev_info(&pdev->dev, "Bus frequency is %d KHz\n", i2c->speed);