| Message ID | 1505997906-30921-3-git-send-email-guochun.mao@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
gentle ping... On Thu, 2017-09-21 at 20:45 +0800, Guochun Mao wrote: > Abstract functions of clock setting, to avoid duplicated code, > these functions been used in new feature. > Implement suspend/resume functions. > > Signed-off-by: Guochun Mao <guochun.mao@mediatek.com> > --- > drivers/mtd/spi-nor/mtk-quadspi.c | 70 ++++++++++++++++++++++++++++++------- > 1 file changed, 58 insertions(+), 12 deletions(-) > > diff --git a/drivers/mtd/spi-nor/mtk-quadspi.c b/drivers/mtd/spi-nor/mtk-quadspi.c > index c258c7a..abe455c 100644 > --- a/drivers/mtd/spi-nor/mtk-quadspi.c > +++ b/drivers/mtd/spi-nor/mtk-quadspi.c > @@ -404,6 +404,29 @@ static int mt8173_nor_write_reg(struct spi_nor *nor, u8 opcode, u8 *buf, > return ret; > } > > +static void mt8173_nor_disable_clk(struct mt8173_nor *mt8173_nor) > +{ > + clk_disable_unprepare(mt8173_nor->spi_clk); > + clk_disable_unprepare(mt8173_nor->nor_clk); > +} > + > +static int mt8173_nor_enable_clk(struct mt8173_nor *mt8173_nor) > +{ > + int ret; > + > + ret = clk_prepare_enable(mt8173_nor->spi_clk); > + if (ret) > + return ret; > + > + ret = clk_prepare_enable(mt8173_nor->nor_clk); > + if (ret) { > + clk_disable_unprepare(mt8173_nor->spi_clk); > + return ret; > + } > + > + return 0; > +} > + > static int mtk_nor_init(struct mt8173_nor *mt8173_nor, > struct device_node *flash_node) > { > @@ -468,15 +491,11 @@ static int mtk_nor_drv_probe(struct platform_device *pdev) > return PTR_ERR(mt8173_nor->nor_clk); > > mt8173_nor->dev = &pdev->dev; > - ret = clk_prepare_enable(mt8173_nor->spi_clk); > + > + ret = mt8173_nor_enable_clk(mt8173_nor); > if (ret) > return ret; > > - ret = clk_prepare_enable(mt8173_nor->nor_clk); > - if (ret) { > - clk_disable_unprepare(mt8173_nor->spi_clk); > - return ret; > - } > /* only support one attached flash */ > flash_np = of_get_next_available_child(pdev->dev.of_node, NULL); > if (!flash_np) { > @@ -487,10 +506,9 @@ static int mtk_nor_drv_probe(struct platform_device *pdev) > ret = mtk_nor_init(mt8173_nor, flash_np); > > nor_free: > - if (ret) { > - clk_disable_unprepare(mt8173_nor->spi_clk); > - clk_disable_unprepare(mt8173_nor->nor_clk); > - } > + if (ret) > + mt8173_nor_disable_clk(mt8173_nor); > + > return ret; > } > > @@ -498,11 +516,38 @@ static int mtk_nor_drv_remove(struct platform_device *pdev) > { > struct mt8173_nor *mt8173_nor = platform_get_drvdata(pdev); > > - clk_disable_unprepare(mt8173_nor->spi_clk); > - clk_disable_unprepare(mt8173_nor->nor_clk); > + mt8173_nor_disable_clk(mt8173_nor); > + > + return 0; > +} > + > +#ifdef CONFIG_PM_SLEEP > +static int mtk_nor_suspend(struct device *dev) > +{ > + struct mt8173_nor *mt8173_nor = dev_get_drvdata(dev); > + > + mt8173_nor_disable_clk(mt8173_nor); > + > return 0; > } > > +static int mtk_nor_resume(struct device *dev) > +{ > + struct mt8173_nor *mt8173_nor = dev_get_drvdata(dev); > + > + return mt8173_nor_enable_clk(mt8173_nor); > +} > + > +static const struct dev_pm_ops mtk_nor_dev_pm_ops = { > + .suspend = mtk_nor_suspend, > + .resume = mtk_nor_resume, > +}; > + > +#define MTK_NOR_DEV_PM_OPS (&mtk_nor_dev_pm_ops) > +#else > +#define MTK_NOR_DEV_PM_OPS NULL > +#endif > + > static const struct of_device_id mtk_nor_of_ids[] = { > { .compatible = "mediatek,mt8173-nor"}, > { /* sentinel */ } > @@ -514,6 +559,7 @@ static int mtk_nor_drv_remove(struct platform_device *pdev) > .remove = mtk_nor_drv_remove, > .driver = { > .name = "mtk-nor", > + .pm = MTK_NOR_DEV_PM_OPS, > .of_match_table = mtk_nor_of_ids, > }, > };
Le 21/09/2017 à 14:45, Guochun Mao a écrit : > Abstract functions of clock setting, to avoid duplicated code, > these functions been used in new feature. > Implement suspend/resume functions. > > Signed-off-by: Guochun Mao <guochun.mao@mediatek.com> Applied to the spi-nor/next branch of l2-mtd Thanks! > --- > drivers/mtd/spi-nor/mtk-quadspi.c | 70 ++++++++++++++++++++++++++++++------- > 1 file changed, 58 insertions(+), 12 deletions(-) > > diff --git a/drivers/mtd/spi-nor/mtk-quadspi.c b/drivers/mtd/spi-nor/mtk-quadspi.c > index c258c7a..abe455c 100644 > --- a/drivers/mtd/spi-nor/mtk-quadspi.c > +++ b/drivers/mtd/spi-nor/mtk-quadspi.c > @@ -404,6 +404,29 @@ static int mt8173_nor_write_reg(struct spi_nor *nor, u8 opcode, u8 *buf, > return ret; > } > > +static void mt8173_nor_disable_clk(struct mt8173_nor *mt8173_nor) > +{ > + clk_disable_unprepare(mt8173_nor->spi_clk); > + clk_disable_unprepare(mt8173_nor->nor_clk); > +} > + > +static int mt8173_nor_enable_clk(struct mt8173_nor *mt8173_nor) > +{ > + int ret; > + > + ret = clk_prepare_enable(mt8173_nor->spi_clk); > + if (ret) > + return ret; > + > + ret = clk_prepare_enable(mt8173_nor->nor_clk); > + if (ret) { > + clk_disable_unprepare(mt8173_nor->spi_clk); > + return ret; > + } > + > + return 0; > +} > + > static int mtk_nor_init(struct mt8173_nor *mt8173_nor, > struct device_node *flash_node) > { > @@ -468,15 +491,11 @@ static int mtk_nor_drv_probe(struct platform_device *pdev) > return PTR_ERR(mt8173_nor->nor_clk); > > mt8173_nor->dev = &pdev->dev; > - ret = clk_prepare_enable(mt8173_nor->spi_clk); > + > + ret = mt8173_nor_enable_clk(mt8173_nor); > if (ret) > return ret; > > - ret = clk_prepare_enable(mt8173_nor->nor_clk); > - if (ret) { > - clk_disable_unprepare(mt8173_nor->spi_clk); > - return ret; > - } > /* only support one attached flash */ > flash_np = of_get_next_available_child(pdev->dev.of_node, NULL); > if (!flash_np) { > @@ -487,10 +506,9 @@ static int mtk_nor_drv_probe(struct platform_device *pdev) > ret = mtk_nor_init(mt8173_nor, flash_np); > > nor_free: > - if (ret) { > - clk_disable_unprepare(mt8173_nor->spi_clk); > - clk_disable_unprepare(mt8173_nor->nor_clk); > - } > + if (ret) > + mt8173_nor_disable_clk(mt8173_nor); > + > return ret; > } > > @@ -498,11 +516,38 @@ static int mtk_nor_drv_remove(struct platform_device *pdev) > { > struct mt8173_nor *mt8173_nor = platform_get_drvdata(pdev); > > - clk_disable_unprepare(mt8173_nor->spi_clk); > - clk_disable_unprepare(mt8173_nor->nor_clk); > + mt8173_nor_disable_clk(mt8173_nor); > + > + return 0; > +} > + > +#ifdef CONFIG_PM_SLEEP > +static int mtk_nor_suspend(struct device *dev) > +{ > + struct mt8173_nor *mt8173_nor = dev_get_drvdata(dev); > + > + mt8173_nor_disable_clk(mt8173_nor); > + > return 0; > } > > +static int mtk_nor_resume(struct device *dev) > +{ > + struct mt8173_nor *mt8173_nor = dev_get_drvdata(dev); > + > + return mt8173_nor_enable_clk(mt8173_nor); > +} > + > +static const struct dev_pm_ops mtk_nor_dev_pm_ops = { > + .suspend = mtk_nor_suspend, > + .resume = mtk_nor_resume, > +}; > + > +#define MTK_NOR_DEV_PM_OPS (&mtk_nor_dev_pm_ops) > +#else > +#define MTK_NOR_DEV_PM_OPS NULL > +#endif > + > static const struct of_device_id mtk_nor_of_ids[] = { > { .compatible = "mediatek,mt8173-nor"}, > { /* sentinel */ } > @@ -514,6 +559,7 @@ static int mtk_nor_drv_remove(struct platform_device *pdev) > .remove = mtk_nor_drv_remove, > .driver = { > .name = "mtk-nor", > + .pm = MTK_NOR_DEV_PM_OPS, > .of_match_table = mtk_nor_of_ids, > }, > }; >
diff --git a/drivers/mtd/spi-nor/mtk-quadspi.c b/drivers/mtd/spi-nor/mtk-quadspi.c index c258c7a..abe455c 100644 --- a/drivers/mtd/spi-nor/mtk-quadspi.c +++ b/drivers/mtd/spi-nor/mtk-quadspi.c @@ -404,6 +404,29 @@ static int mt8173_nor_write_reg(struct spi_nor *nor, u8 opcode, u8 *buf, return ret; } +static void mt8173_nor_disable_clk(struct mt8173_nor *mt8173_nor) +{ + clk_disable_unprepare(mt8173_nor->spi_clk); + clk_disable_unprepare(mt8173_nor->nor_clk); +} + +static int mt8173_nor_enable_clk(struct mt8173_nor *mt8173_nor) +{ + int ret; + + ret = clk_prepare_enable(mt8173_nor->spi_clk); + if (ret) + return ret; + + ret = clk_prepare_enable(mt8173_nor->nor_clk); + if (ret) { + clk_disable_unprepare(mt8173_nor->spi_clk); + return ret; + } + + return 0; +} + static int mtk_nor_init(struct mt8173_nor *mt8173_nor, struct device_node *flash_node) { @@ -468,15 +491,11 @@ static int mtk_nor_drv_probe(struct platform_device *pdev) return PTR_ERR(mt8173_nor->nor_clk); mt8173_nor->dev = &pdev->dev; - ret = clk_prepare_enable(mt8173_nor->spi_clk); + + ret = mt8173_nor_enable_clk(mt8173_nor); if (ret) return ret; - ret = clk_prepare_enable(mt8173_nor->nor_clk); - if (ret) { - clk_disable_unprepare(mt8173_nor->spi_clk); - return ret; - } /* only support one attached flash */ flash_np = of_get_next_available_child(pdev->dev.of_node, NULL); if (!flash_np) { @@ -487,10 +506,9 @@ static int mtk_nor_drv_probe(struct platform_device *pdev) ret = mtk_nor_init(mt8173_nor, flash_np); nor_free: - if (ret) { - clk_disable_unprepare(mt8173_nor->spi_clk); - clk_disable_unprepare(mt8173_nor->nor_clk); - } + if (ret) + mt8173_nor_disable_clk(mt8173_nor); + return ret; } @@ -498,11 +516,38 @@ static int mtk_nor_drv_remove(struct platform_device *pdev) { struct mt8173_nor *mt8173_nor = platform_get_drvdata(pdev); - clk_disable_unprepare(mt8173_nor->spi_clk); - clk_disable_unprepare(mt8173_nor->nor_clk); + mt8173_nor_disable_clk(mt8173_nor); + + return 0; +} + +#ifdef CONFIG_PM_SLEEP +static int mtk_nor_suspend(struct device *dev) +{ + struct mt8173_nor *mt8173_nor = dev_get_drvdata(dev); + + mt8173_nor_disable_clk(mt8173_nor); + return 0; } +static int mtk_nor_resume(struct device *dev) +{ + struct mt8173_nor *mt8173_nor = dev_get_drvdata(dev); + + return mt8173_nor_enable_clk(mt8173_nor); +} + +static const struct dev_pm_ops mtk_nor_dev_pm_ops = { + .suspend = mtk_nor_suspend, + .resume = mtk_nor_resume, +}; + +#define MTK_NOR_DEV_PM_OPS (&mtk_nor_dev_pm_ops) +#else +#define MTK_NOR_DEV_PM_OPS NULL +#endif + static const struct of_device_id mtk_nor_of_ids[] = { { .compatible = "mediatek,mt8173-nor"}, { /* sentinel */ } @@ -514,6 +559,7 @@ static int mtk_nor_drv_remove(struct platform_device *pdev) .remove = mtk_nor_drv_remove, .driver = { .name = "mtk-nor", + .pm = MTK_NOR_DEV_PM_OPS, .of_match_table = mtk_nor_of_ids, }, };
Abstract functions of clock setting, to avoid duplicated code, these functions been used in new feature. Implement suspend/resume functions. Signed-off-by: Guochun Mao <guochun.mao@mediatek.com> --- drivers/mtd/spi-nor/mtk-quadspi.c | 70 ++++++++++++++++++++++++++++++------- 1 file changed, 58 insertions(+), 12 deletions(-)