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iio: adc: mt6577_auxadc: Use devm_clk_get_enabled() helper function

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The devm_clk_get_enabled() helper:
    - calls devm_clk_get()
    - calls clk_prepare_enable() and registers what is needed in order to
      call clk_disable_unprepare() when needed, as a managed resource.

This simplifies the code.

Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Link: https://lore.kernel.org/r/20230825105746.2999548-3-ruanjinjie@huawei.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Jinjie Ruan 2023-08-25 18:57:44 +08:00 committed by Jonathan Cameron
parent 0bb80ecc33
commit a3e9625ec0
1 changed files with 3 additions and 14 deletions
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17
drivers/iio/adc/mt6577_auxadc.c
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@ -270,23 +270,16 @@ static int mt6577_auxadc_probe(struct platform_device *pdev)
return PTR_ERR(adc_dev->reg_base);
}
adc_dev->adc_clk = devm_clk_get(&pdev->dev, "main");
adc_dev->adc_clk = devm_clk_get_enabled(&pdev->dev, "main");
if (IS_ERR(adc_dev->adc_clk)) {
dev_err(&pdev->dev, "failed to get auxadc clock\n");
return PTR_ERR(adc_dev->adc_clk);
}
ret = clk_prepare_enable(adc_dev->adc_clk);
if (ret) {
dev_err(&pdev->dev, "failed to enable auxadc clock\n");
return ret;
return PTR_ERR(adc_dev->adc_clk);
}
adc_clk_rate = clk_get_rate(adc_dev->adc_clk);
if (!adc_clk_rate) {
ret = -EINVAL;
dev_err(&pdev->dev, "null clock rate\n");
goto err_disable_clk;
return -EINVAL;
}
adc_dev->dev_comp = device_get_match_data(&pdev->dev);
@ -310,8 +303,6 @@ static int mt6577_auxadc_probe(struct platform_device *pdev)
err_power_off:
mt6577_auxadc_mod_reg(adc_dev->reg_base + MT6577_AUXADC_MISC,
0, MT6577_AUXADC_PDN_EN);
err_disable_clk:
clk_disable_unprepare(adc_dev->adc_clk);
return ret;
}
@ -325,8 +316,6 @@ static int mt6577_auxadc_remove(struct platform_device *pdev)
mt6577_auxadc_mod_reg(adc_dev->reg_base + MT6577_AUXADC_MISC,
0, MT6577_AUXADC_PDN_EN);
clk_disable_unprepare(adc_dev->adc_clk);
return 0;
}