| Message ID | 20190202040653.1217-12-tudor.ambarus@microchip.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | spi: atmel-quadspi: introduce sam9x60 qspi controller | expand |
On Sat, 2 Feb 2019 04:07:41 +0000 <Tudor.Ambarus@microchip.com> wrote: > From: Tudor Ambarus <tudor.ambarus@microchip.com> > > Naming clocks is a good practice. Keep supporting unnamed > peripheral clock, to be backward compatible with old DTs. > While here, rename clk to pclk, to indicate that it is a > peripheral clock. > > Suggested-by: Boris Brezillon <bbrezillon@kernel.org> > Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com> Reviewed-by: Boris Brezillon <bbrezillon@kernel.org> > --- > v3: new patch > > drivers/spi/atmel-quadspi.c | 33 ++++++++++++++++++--------------- > 1 file changed, 18 insertions(+), 15 deletions(-) > > diff --git a/drivers/spi/atmel-quadspi.c b/drivers/spi/atmel-quadspi.c > index bfa5f5e92d96..c9548942535a 100644 > --- a/drivers/spi/atmel-quadspi.c > +++ b/drivers/spi/atmel-quadspi.c > @@ -136,7 +136,7 @@ > struct atmel_qspi { > void __iomem *regs; > void __iomem *mem; > - struct clk *clk; > + struct clk *pclk; > struct platform_device *pdev; > u32 pending; > u32 smm; > @@ -338,7 +338,7 @@ static int atmel_qspi_setup(struct spi_device *spi) > if (!spi->max_speed_hz) > return -EINVAL; > > - src_rate = clk_get_rate(aq->clk); > + src_rate = clk_get_rate(aq->pclk); > if (!src_rate) > return -EINVAL; > > @@ -429,15 +429,18 @@ static int atmel_qspi_probe(struct platform_device *pdev) > } > > /* Get the peripheral clock */ > - aq->clk = devm_clk_get(&pdev->dev, NULL); > - if (IS_ERR(aq->clk)) { > + aq->pclk = devm_clk_get(&pdev->dev, "pclk"); > + if (IS_ERR(aq->pclk)) > + aq->pclk = devm_clk_get(&pdev->dev, NULL); > + > + if (IS_ERR(aq->pclk)) { > dev_err(&pdev->dev, "missing peripheral clock\n"); > - err = PTR_ERR(aq->clk); > + err = PTR_ERR(aq->pclk); > goto exit; > } > > /* Enable the peripheral clock */ > - err = clk_prepare_enable(aq->clk); > + err = clk_prepare_enable(aq->pclk); > if (err) { > dev_err(&pdev->dev, "failed to enable the peripheral clock\n"); > goto exit; > @@ -448,25 +451,25 @@ static int atmel_qspi_probe(struct platform_device *pdev) > if (irq < 0) { > dev_err(&pdev->dev, "missing IRQ\n"); > err = irq; > - goto disable_clk; > + goto disable_pclk; > } > err = devm_request_irq(&pdev->dev, irq, atmel_qspi_interrupt, > 0, dev_name(&pdev->dev), aq); > if (err) > - goto disable_clk; > + goto disable_pclk; > > err = atmel_qspi_init(aq); > if (err) > - goto disable_clk; > + goto disable_pclk; > > err = spi_register_controller(ctrl); > if (err) > - goto disable_clk; > + goto disable_pclk; > > return 0; > > -disable_clk: > - clk_disable_unprepare(aq->clk); > +disable_pclk: > + clk_disable_unprepare(aq->pclk); > exit: > spi_controller_put(ctrl); > > @@ -480,7 +483,7 @@ static int atmel_qspi_remove(struct platform_device *pdev) > > spi_unregister_controller(ctrl); > writel_relaxed(QSPI_CR_QSPIDIS, aq->regs + QSPI_CR); > - clk_disable_unprepare(aq->clk); > + clk_disable_unprepare(aq->pclk); > return 0; > } > > @@ -488,7 +491,7 @@ static int __maybe_unused atmel_qspi_suspend(struct device *dev) > { > struct atmel_qspi *aq = dev_get_drvdata(dev); > > - clk_disable_unprepare(aq->clk); > + clk_disable_unprepare(aq->pclk); > > return 0; > } > @@ -497,7 +500,7 @@ static int __maybe_unused atmel_qspi_resume(struct device *dev) > { > struct atmel_qspi *aq = dev_get_drvdata(dev); > > - clk_prepare_enable(aq->clk); > + clk_prepare_enable(aq->pclk); > > return atmel_qspi_init(aq); > }
diff --git a/drivers/spi/atmel-quadspi.c b/drivers/spi/atmel-quadspi.c index bfa5f5e92d96..c9548942535a 100644 --- a/drivers/spi/atmel-quadspi.c +++ b/drivers/spi/atmel-quadspi.c @@ -136,7 +136,7 @@ struct atmel_qspi { void __iomem *regs; void __iomem *mem; - struct clk *clk; + struct clk *pclk; struct platform_device *pdev; u32 pending; u32 smm; @@ -338,7 +338,7 @@ static int atmel_qspi_setup(struct spi_device *spi) if (!spi->max_speed_hz) return -EINVAL; - src_rate = clk_get_rate(aq->clk); + src_rate = clk_get_rate(aq->pclk); if (!src_rate) return -EINVAL; @@ -429,15 +429,18 @@ static int atmel_qspi_probe(struct platform_device *pdev) } /* Get the peripheral clock */ - aq->clk = devm_clk_get(&pdev->dev, NULL); - if (IS_ERR(aq->clk)) { + aq->pclk = devm_clk_get(&pdev->dev, "pclk"); + if (IS_ERR(aq->pclk)) + aq->pclk = devm_clk_get(&pdev->dev, NULL); + + if (IS_ERR(aq->pclk)) { dev_err(&pdev->dev, "missing peripheral clock\n"); - err = PTR_ERR(aq->clk); + err = PTR_ERR(aq->pclk); goto exit; } /* Enable the peripheral clock */ - err = clk_prepare_enable(aq->clk); + err = clk_prepare_enable(aq->pclk); if (err) { dev_err(&pdev->dev, "failed to enable the peripheral clock\n"); goto exit; @@ -448,25 +451,25 @@ static int atmel_qspi_probe(struct platform_device *pdev) if (irq < 0) { dev_err(&pdev->dev, "missing IRQ\n"); err = irq; - goto disable_clk; + goto disable_pclk; } err = devm_request_irq(&pdev->dev, irq, atmel_qspi_interrupt, 0, dev_name(&pdev->dev), aq); if (err) - goto disable_clk; + goto disable_pclk; err = atmel_qspi_init(aq); if (err) - goto disable_clk; + goto disable_pclk; err = spi_register_controller(ctrl); if (err) - goto disable_clk; + goto disable_pclk; return 0; -disable_clk: - clk_disable_unprepare(aq->clk); +disable_pclk: + clk_disable_unprepare(aq->pclk); exit: spi_controller_put(ctrl); @@ -480,7 +483,7 @@ static int atmel_qspi_remove(struct platform_device *pdev) spi_unregister_controller(ctrl); writel_relaxed(QSPI_CR_QSPIDIS, aq->regs + QSPI_CR); - clk_disable_unprepare(aq->clk); + clk_disable_unprepare(aq->pclk); return 0; } @@ -488,7 +491,7 @@ static int __maybe_unused atmel_qspi_suspend(struct device *dev) { struct atmel_qspi *aq = dev_get_drvdata(dev); - clk_disable_unprepare(aq->clk); + clk_disable_unprepare(aq->pclk); return 0; } @@ -497,7 +500,7 @@ static int __maybe_unused atmel_qspi_resume(struct device *dev) { struct atmel_qspi *aq = dev_get_drvdata(dev); - clk_prepare_enable(aq->clk); + clk_prepare_enable(aq->pclk); return atmel_qspi_init(aq); }