diff options
| author | Li Zetao <lizetao1@huawei.com> | 2023-08-23 15:39:20 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2023-09-11 02:31:57 +0200 |
| commit | 0135a38436111366bc2fe6d3cd82a9c2cc92ce7f (patch) | |
| tree | d64b3c0427bc877441028da5ec4fe973ac741630 /drivers | |
| parent | spi: bcm2835: Use helper function devm_clk_get_enabled() (diff) | |
| download | linux-0135a38436111366bc2fe6d3cd82a9c2cc92ce7f.tar.xz linux-0135a38436111366bc2fe6d3cd82a9c2cc92ce7f.zip | |
spi: bcm2835aux: Use helper function devm_clk_get_enabled()
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.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Li Zetao <lizetao1@huawei.com>
Link: https://lore.kernel.org/r/20230823133938.1359106-8-lizetao1@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/spi/spi-bcm2835aux.c | 23 |
1 files changed, 4 insertions, 19 deletions
diff --git a/drivers/spi/spi-bcm2835aux.c b/drivers/spi/spi-bcm2835aux.c index 6d2a5d9f2498..06fe155a70c9 100644 --- a/drivers/spi/spi-bcm2835aux.c +++ b/drivers/spi/spi-bcm2835aux.c @@ -512,7 +512,7 @@ static int bcm2835aux_spi_probe(struct platform_device *pdev) if (IS_ERR(bs->regs)) return PTR_ERR(bs->regs); - bs->clk = devm_clk_get(&pdev->dev, NULL); + bs->clk = devm_clk_get_enabled(&pdev->dev, NULL); if (IS_ERR(bs->clk)) { err = PTR_ERR(bs->clk); dev_err(&pdev->dev, "could not get clk: %d\n", err); @@ -523,19 +523,11 @@ static int bcm2835aux_spi_probe(struct platform_device *pdev) if (bs->irq < 0) return bs->irq; - /* this also enables the HW block */ - err = clk_prepare_enable(bs->clk); - if (err) { - dev_err(&pdev->dev, "could not prepare clock: %d\n", err); - return err; - } - /* just checking if the clock returns a sane value */ clk_hz = clk_get_rate(bs->clk); if (!clk_hz) { dev_err(&pdev->dev, "clock returns 0 Hz\n"); - err = -ENODEV; - goto out_clk_disable; + return -ENODEV; } /* reset SPI-HW block */ @@ -547,22 +539,18 @@ static int bcm2835aux_spi_probe(struct platform_device *pdev) dev_name(&pdev->dev), host); if (err) { dev_err(&pdev->dev, "could not request IRQ: %d\n", err); - goto out_clk_disable; + return err; } err = spi_register_controller(host); if (err) { dev_err(&pdev->dev, "could not register SPI host: %d\n", err); - goto out_clk_disable; + return err; } bcm2835aux_debugfs_create(bs, dev_name(&pdev->dev)); return 0; - -out_clk_disable: - clk_disable_unprepare(bs->clk); - return err; } static void bcm2835aux_spi_remove(struct platform_device *pdev) @@ -575,9 +563,6 @@ static void bcm2835aux_spi_remove(struct platform_device *pdev) spi_unregister_controller(host); bcm2835aux_spi_reset_hw(bs); - - /* disable the HW block by releasing the clock */ - clk_disable_unprepare(bs->clk); } static const struct of_device_id bcm2835aux_spi_match[] = { |