diff options
| author | Prashant Gaikwad <pgaikwad@nvidia.com> | 2013-10-15 17:38:36 +0530 |
|---|---|---|
| committer | Bharat Nihalani <bnihalani@nvidia.com> | 2013-10-17 05:18:37 -0700 |
| commit | 8c2db9fb100cacccf3e2fa06fef691783d5904cd (patch) | |
| tree | 5f80b6fd5d57fc180e8c1f6276508c5dbf7ee7c4 /drivers/dma | |
| parent | 23b7df412b6896ebee18377de8047ac22bb8ce72 (diff) | |
apbdma: tegra: save and restore apbdma context
Save apbdma context before entering LP0 from cpuidle
and restore on exit.
Bug 1254633
Change-Id: Idb21d6b8807064ea9b522f4ca99031b9c18e9f5e
Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Reviewed-on: http://git-master/r/299482
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/tegra20-apb-dma.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/dma/tegra20-apb-dma.c b/drivers/dma/tegra20-apb-dma.c index 1e82d16fd7e3..23f8e02d478d 100644 --- a/drivers/dma/tegra20-apb-dma.c +++ b/drivers/dma/tegra20-apb-dma.c @@ -1345,6 +1345,8 @@ static struct platform_device_id tegra_dma_devtype[] = { }, }; +static struct device *dma_device; + static int tegra_dma_probe(struct platform_device *pdev) { struct resource *res; @@ -1396,6 +1398,8 @@ static int tegra_dma_probe(struct platform_device *pdev) spin_lock_init(&tdma->global_lock); + dma_device = &pdev->dev; + tegra_pd_add_device(&pdev->dev); pm_runtime_enable(&pdev->dev); if (!pm_runtime_enabled(&pdev->dev)) { @@ -1613,6 +1617,16 @@ static int tegra_dma_pm_resume(struct device *dev) } #endif +int tegra_dma_save(void) +{ + return tegra_dma_pm_suspend(dma_device); +} + +int tegra_dma_restore(void) +{ + return tegra_dma_pm_resume(dma_device); +} + static const struct dev_pm_ops tegra_dma_dev_pm_ops = { #ifdef CONFIG_PM_RUNTIME .runtime_suspend = tegra_dma_runtime_suspend, |