* Pekon Gupta <[email protected]> [130617 11:52]:
> From: avinash philip <[email protected]>
>
> GPMC is hardware controller for external memory interfaces.
> This patch adds suspend/resume support for GPMC driver.
> It also preserves GPMC register configurations across device low-power states
> in which GPMC hardware can be powered-off.
> gpmc_suspend()/gpmc_resume() are called by default by core PM framework as
> part
> of driver's runtime PM callbacks.
>
> Signed-off-by: Philip Avinash <[email protected]>
> Signed-off-by: Pekon Gupta <[email protected]>
Thanks applying this into omap-for-v3.11/gpmc, patch 1/3 I already
have applied and the MTD change should get merged along with other
MTD patches.
Regards,
Tony
> ---
> arch/arm/mach-omap2/gpmc.c | 21 +++++++++++++++++++--
> 1 file changed, 19 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c
> index 1380cee..9b579d0 100644
> --- a/arch/arm/mach-omap2/gpmc.c
> +++ b/arch/arm/mach-omap2/gpmc.c
> @@ -1655,6 +1655,24 @@ static int gpmc_remove(struct platform_device *pdev)
> return 0;
> }
>
> +#ifdef CONFIG_PM_SLEEP
> +static int gpmc_suspend(struct device *dev)
> +{
> + omap3_gpmc_save_context();
> + pm_runtime_put_sync(dev);
> + return 0;
> +}
> +
> +static int gpmc_resume(struct device *dev)
> +{
> + pm_runtime_get_sync(dev);
> + omap3_gpmc_restore_context();
> + return 0;
> +}
> +#endif
> +
> +static SIMPLE_DEV_PM_OPS(gpmc_pm_ops, gpmc_suspend, gpmc_resume);
> +
> static struct platform_driver gpmc_driver = {
> .probe = gpmc_probe,
> .remove = gpmc_remove,
> @@ -1662,6 +1680,7 @@ static struct platform_driver gpmc_driver = {
> .name = DEVICE_NAME,
> .owner = THIS_MODULE,
> .of_match_table = of_match_ptr(gpmc_dt_ids),
> + .pm = &gpmc_pm_ops,
> },
> };
>
> @@ -1724,7 +1743,6 @@ static irqreturn_t gpmc_handle_irq(int irq, void *dev)
> return IRQ_HANDLED;
> }
>
> -#ifdef CONFIG_ARCH_OMAP3
> static struct omap3_gpmc_regs gpmc_context;
>
> void omap3_gpmc_save_context(void)
> @@ -1789,4 +1807,3 @@ void omap3_gpmc_restore_context(void)
> }
> }
> }
> -#endif /* CONFIG_ARCH_OMAP3 */
> --
> 1.8.1
>
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