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Mon, 8 Apr 2024 10:54:50 +0800 Received: from ml-HP-ProDesk-680-G4-MT.zhaoxin.com (10.28.66.68) by ZXBJMBX03.zhaoxin.com (10.29.252.7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Mon, 8 Apr 2024 10:54:49 +0800 X-Barracuda-RBL-Trusted-Forwarder: 10.28.252.163 From: Hans Hu X-Barracuda-RBL-Trusted-Forwarder: 10.29.252.7 To: , CC: , , , "Wolfram Sang" Subject: [PATCH v10 1/6] i2c: wmt: create wmt_i2c_init for general init Date: Mon, 8 Apr 2024 10:54:43 +0800 X-ASG-Orig-Subj: [PATCH v10 1/6] i2c: wmt: create wmt_i2c_init for general init Message-ID: <60d6194d9e6623744955047a3881f9010b4da85a.1712479417.git.hanshu-oc@zhaoxin.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-i2c@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: zxbjmbx1.zhaoxin.com (10.29.252.163) To ZXBJMBX03.zhaoxin.com (10.29.252.7) X-Barracuda-Connect: ZXSHMBX1.zhaoxin.com[10.28.252.163] X-Barracuda-Start-Time: 1712544890 X-Barracuda-Encrypted: ECDHE-RSA-AES128-GCM-SHA256 X-Barracuda-URL: https://10.28.252.36:4443/cgi-mod/mark.cgi X-Virus-Scanned: by bsmtpd at zhaoxin.com X-Barracuda-Scan-Msg-Size: 3842 X-Barracuda-BRTS-Status: 0 X-Barracuda-Bayes: INNOCENT GLOBAL 0.0000 1.0000 -2.0210 X-Barracuda-Spam-Score: -2.02 X-Barracuda-Spam-Status: No, SCORE=-2.02 using global scores of TAG_LEVEL=1000.0 QUARANTINE_LEVEL=1000.0 KILL_LEVEL=9.0 tests= X-Barracuda-Spam-Report: Code version 3.2, rules version 3.2.3.123213 Rule breakdown below pts rule name description ---- ---------------------- -------------------------------------------------- Some common initialization actions are put in the function wmt_i2c_init(), which is convenient to share with zhaoxin. Reviewed-by: Andi Shyti Reviewed-by: Wolfram Sang Signed-off-by: Andi Shyti Signed-off-by: Hans Hu --- drivers/i2c/busses/i2c-wmt.c | 65 ++++++++++++++++++++---------------- 1 file changed, 37 insertions(+), 28 deletions(-) diff --git a/drivers/i2c/busses/i2c-wmt.c b/drivers/i2c/busses/i2c-wmt.c index 198afee5233c..76ede433f65c 100644 --- a/drivers/i2c/busses/i2c-wmt.c +++ b/drivers/i2c/busses/i2c-wmt.c @@ -109,7 +109,7 @@ static int wmt_check_status(struct wmt_i2c_dev *i2c_dev) unsigned long wait_result; wait_result = wait_for_completion_timeout(&i2c_dev->complete, - msecs_to_jiffies(500)); + msecs_to_jiffies(500)); if (!wait_result) return -ETIMEDOUT; @@ -286,6 +286,38 @@ static irqreturn_t wmt_i2c_isr(int irq, void *data) return IRQ_HANDLED; } +static int wmt_i2c_init(struct platform_device *pdev, struct wmt_i2c_dev **pi2c_dev) +{ + int err; + struct wmt_i2c_dev *i2c_dev; + struct device_node *np = pdev->dev.of_node; + + i2c_dev = devm_kzalloc(&pdev->dev, sizeof(*i2c_dev), GFP_KERNEL); + if (!i2c_dev) + return -ENOMEM; + + i2c_dev->base = devm_platform_get_and_ioremap_resource(pdev, 0, NULL); + if (IS_ERR(i2c_dev->base)) + return PTR_ERR(i2c_dev->base); + + i2c_dev->irq = irq_of_parse_and_map(np, 0); + if (!i2c_dev->irq) + return -EINVAL; + + err = devm_request_irq(&pdev->dev, i2c_dev->irq, wmt_i2c_isr, + 0, pdev->name, i2c_dev); + if (err) + return dev_err_probe(&pdev->dev, err, + "failed to request irq %i\n", i2c_dev->irq); + + i2c_dev->dev = &pdev->dev; + init_completion(&i2c_dev->complete); + platform_set_drvdata(pdev, i2c_dev); + + *pi2c_dev = i2c_dev; + return 0; +} + static int wmt_i2c_reset_hardware(struct wmt_i2c_dev *i2c_dev) { int err; @@ -327,19 +359,9 @@ static int wmt_i2c_probe(struct platform_device *pdev) int err; u32 clk_rate; - i2c_dev = devm_kzalloc(&pdev->dev, sizeof(*i2c_dev), GFP_KERNEL); - if (!i2c_dev) - return -ENOMEM; - - i2c_dev->base = devm_platform_get_and_ioremap_resource(pdev, 0, NULL); - if (IS_ERR(i2c_dev->base)) - return PTR_ERR(i2c_dev->base); - - i2c_dev->irq = irq_of_parse_and_map(np, 0); - if (!i2c_dev->irq) { - dev_err(&pdev->dev, "irq missing or invalid\n"); - return -EINVAL; - } + err = wmt_i2c_init(pdev, &i2c_dev); + if (err) + return err; i2c_dev->clk = of_clk_get(np, 0); if (IS_ERR(i2c_dev->clk)) { @@ -348,18 +370,9 @@ static int wmt_i2c_probe(struct platform_device *pdev) } err = of_property_read_u32(np, "clock-frequency", &clk_rate); - if (!err && (clk_rate == I2C_MAX_FAST_MODE_FREQ)) + if (!err && clk_rate == I2C_MAX_FAST_MODE_FREQ) i2c_dev->tcr = TCR_FAST_MODE; - i2c_dev->dev = &pdev->dev; - - err = devm_request_irq(&pdev->dev, i2c_dev->irq, wmt_i2c_isr, 0, - "i2c", i2c_dev); - if (err) { - dev_err(&pdev->dev, "failed to request irq %i\n", i2c_dev->irq); - return err; - } - adap = &i2c_dev->adapter; i2c_set_adapdata(adap, i2c_dev); strscpy(adap->name, "WMT I2C adapter", sizeof(adap->name)); @@ -368,8 +381,6 @@ static int wmt_i2c_probe(struct platform_device *pdev) adap->dev.parent = &pdev->dev; adap->dev.of_node = pdev->dev.of_node; - init_completion(&i2c_dev->complete); - err = wmt_i2c_reset_hardware(i2c_dev); if (err) { dev_err(&pdev->dev, "error initializing hardware\n"); @@ -380,8 +391,6 @@ static int wmt_i2c_probe(struct platform_device *pdev) if (err) goto err_disable_clk; - platform_set_drvdata(pdev, i2c_dev); - return 0; err_disable_clk: