diff options
Diffstat (limited to 'drivers/input/keyboard/tegra-kbc.c')
| -rw-r--r-- | drivers/input/keyboard/tegra-kbc.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/drivers/input/keyboard/tegra-kbc.c b/drivers/input/keyboard/tegra-kbc.c index 980ddf6ef757..ea400bdeadca 100644 --- a/drivers/input/keyboard/tegra-kbc.c +++ b/drivers/input/keyboard/tegra-kbc.c @@ -224,9 +224,57 @@ static int tegra_kbc_remove(struct platform_device *pdev) return 0; } +static int tegra_kbc_suspend(struct platform_device *pdev, pm_message_t state) +{ + struct tegra_kbc_driver_data *kbc = platform_get_drvdata(pdev); + NvError e = NvError_Success; + + if (!kbc) + return -1; + + if (!kbc->ddkHandle) { + printk("%s: device handle is NULL\n", __func__); + return -1; + } + + /* power down hardware */ + e = NvDdkKbcSuspend(kbc->ddkHandle); + if (e != NvSuccess) { + printk("%s: hardware power down fail\n", __func__); + return -1; + } + + return 0; +} + +static int tegra_kbc_resume(struct platform_device *pdev) +{ + struct tegra_kbc_driver_data *kbc = platform_get_drvdata(pdev); + NvError e = NvError_Success; + + if (!kbc) + return -1; + + if (!kbc->ddkHandle) { + printk("%s: device handle is NULL\n", __func__); + return -1; + } + + /* power up hardware */ + e = NvDdkKbcResume(kbc->ddkHandle); + if (e != NvSuccess) { + printk("%s: hardware power up fail\n", __func__); + return -1; + } + + return 0; +} + static struct platform_driver tegra_kbc_driver = { .probe = tegra_kbc_probe, .remove = tegra_kbc_remove, + .suspend = tegra_kbc_suspend, + .resume = tegra_kbc_resume, .driver = { .name = "tegra_kbc", }, |