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spi: dw-mmio: Use helper function devm_clk_get_*()

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Since commit 7ef9651e9792 ("clk: Provide new devm_clk helpers for prepared
and enabled clocks"), devm_clk_get() and clk_prepare_enable() can now be
replaced by devm_clk_get_enabled() when driver enables (and possibly
prepares) the clocks for the whole lifetime of the device. Moreover, it is
no longer necessary to unprepare and disable the clocks explicitly. Also,
devm_clk_get_optional() and clk_prepare_enable() can now be replaced by
devm_clk_get_optional_enabled(). Moreover, the lable "out_clk" no longer
makes sense, rename it to "out_reset".

Signed-off-by: Li Zetao <lizetao1@huawei.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: Serge Semin <fancer.lancer@gmail.com>
Link: https://lore.kernel.org/r/20230823133938.1359106-13-lizetao1@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Li Zetao 2023-08-23 21:39:25 +08:00 committed by Mark Brown
parent 10c3937890
commit 349112b676
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 9 additions and 22 deletions
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31
drivers/spi/spi-dw-mmio.c
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@ -340,29 +340,20 @@ static int dw_spi_mmio_probe(struct platform_device *pdev)
if (dws->irq < 0)
return dws->irq; /* -ENXIO */
dwsmmio->clk = devm_clk_get(&pdev->dev, NULL);
dwsmmio->clk = devm_clk_get_enabled(&pdev->dev, NULL);
if (IS_ERR(dwsmmio->clk))
return PTR_ERR(dwsmmio->clk);
ret = clk_prepare_enable(dwsmmio->clk);
if (ret)
return ret;
/* Optional clock needed to access the registers */
dwsmmio->pclk = devm_clk_get_optional(&pdev->dev, "pclk");
if (IS_ERR(dwsmmio->pclk)) {
ret = PTR_ERR(dwsmmio->pclk);
goto out_clk;
}
ret = clk_prepare_enable(dwsmmio->pclk);
if (ret)
goto out_clk;
dwsmmio->pclk = devm_clk_get_optional_enabled(&pdev->dev, "pclk");
if (IS_ERR(dwsmmio->pclk))
return PTR_ERR(dwsmmio->pclk);
/* find an optional reset controller */
dwsmmio->rstc = devm_reset_control_get_optional_exclusive(&pdev->dev, "spi");
if (IS_ERR(dwsmmio->rstc)) {
ret = PTR_ERR(dwsmmio->rstc);
goto out_clk;
}
if (IS_ERR(dwsmmio->rstc))
return PTR_ERR(dwsmmio->rstc);
reset_control_deassert(dwsmmio->rstc);
dws->bus_num = pdev->id;
@ -383,7 +374,7 @@ static int dw_spi_mmio_probe(struct platform_device *pdev)
if (init_func) {
ret = init_func(pdev, dwsmmio);
if (ret)
goto out;
goto out_reset;
}
pm_runtime_enable(&pdev->dev);
@ -397,9 +388,7 @@ static int dw_spi_mmio_probe(struct platform_device *pdev)
out:
pm_runtime_disable(&pdev->dev);
clk_disable_unprepare(dwsmmio->pclk);
out_clk:
clk_disable_unprepare(dwsmmio->clk);
out_reset:
reset_control_assert(dwsmmio->rstc);
return ret;
@ -411,8 +400,6 @@ static void dw_spi_mmio_remove(struct platform_device *pdev)
dw_spi_remove_host(&dwsmmio->dws);
pm_runtime_disable(&pdev->dev);
clk_disable_unprepare(dwsmmio->pclk);
clk_disable_unprepare(dwsmmio->clk);
reset_control_assert(dwsmmio->rstc);
}