diff options
| -rw-r--r-- | drivers/spi/spi-dw-mmio.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/spi/spi-dw-mmio.c b/drivers/spi/spi-dw-mmio.c index 33239b4778cb..b8123db4ad55 100644 --- a/drivers/spi/spi-dw-mmio.c +++ b/drivers/spi/spi-dw-mmio.c @@ -392,6 +392,38 @@ out_reset: return ret; } +static int dw_spi_mmio_suspend(struct device *dev) +{ + struct dw_spi_mmio *dwsmmio = dev_get_drvdata(dev); + int ret; + + ret = dw_spi_suspend_controller(&dwsmmio->dws); + if (ret) + return ret; + + reset_control_assert(dwsmmio->rstc); + + clk_disable_unprepare(dwsmmio->pclk); + clk_disable_unprepare(dwsmmio->clk); + + return 0; +} + +static int dw_spi_mmio_resume(struct device *dev) +{ + struct dw_spi_mmio *dwsmmio = dev_get_drvdata(dev); + + clk_prepare_enable(dwsmmio->clk); + clk_prepare_enable(dwsmmio->pclk); + + reset_control_deassert(dwsmmio->rstc); + + return dw_spi_resume_controller(&dwsmmio->dws); +} + +static DEFINE_SIMPLE_DEV_PM_OPS(dw_spi_mmio_pm_ops, + dw_spi_mmio_suspend, dw_spi_mmio_resume); + static void dw_spi_mmio_remove(struct platform_device *pdev) { struct dw_spi_mmio *dwsmmio = platform_get_drvdata(pdev); @@ -435,6 +467,7 @@ static struct platform_driver dw_spi_mmio_driver = { .name = DRIVER_NAME, .of_match_table = dw_spi_mmio_of_match, .acpi_match_table = ACPI_PTR(dw_spi_mmio_acpi_match), + .pm = pm_sleep_ptr(&dw_spi_mmio_pm_ops), }, }; module_platform_driver(dw_spi_mmio_driver); |