diff options
| author | Pradeep Goudagunta <pgoudagunta@nvidia.com> | 2011-07-08 19:28:35 +0530 |
|---|---|---|
| committer | Manish Tuteja <mtuteja@nvidia.com> | 2011-07-15 12:03:07 -0700 |
| commit | c560574fcb4d8c58a4554021793e09358658fd4f (patch) | |
| tree | f459b35eb7ccb7f9cc8d5bda59cd935f33d7c5b3 | |
| parent | 1e708e76d81118011d0eefa6c900923720fdd5c0 (diff) | |
input: tegra-kbc: Make sure KBC in wakeupmode before suspend
Making sure that keyboard controller should be in the wakeup mode
before going to suspend.
Doing additional check in suspend.
bug 845098
Change-Id: Ia645be1881390de9d18cf03633cef47e654209e2
Reviewed-on: http://git-master/r/40221
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
Tested-by: Victor Ryabukhin <vryabukhin@nvidia.com>
| -rw-r--r-- | drivers/input/keyboard/tegra-kbc.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/drivers/input/keyboard/tegra-kbc.c b/drivers/input/keyboard/tegra-kbc.c index cddd9cce2b29..c9f8bd0e2020 100644 --- a/drivers/input/keyboard/tegra-kbc.c +++ b/drivers/input/keyboard/tegra-kbc.c @@ -539,7 +539,7 @@ static int __devinit tegra_kbc_probe(struct platform_device *pdev) } kbc->ncols = nc; - for (i = 0; i < pdata->wake_key_cnt; i++) + for (i = 0; i < KBC_MAX_ROW; i++) kbc->wake_enable_keys[i] = ~0u; for (i = 0; i < pdata->wake_key_cnt; i++) @@ -639,10 +639,21 @@ static int __devexit tegra_kbc_remove(struct platform_device *pdev) static int tegra_kbc_suspend(struct platform_device *pdev, pm_message_t state) { struct tegra_kbc *kbc = platform_get_drvdata(pdev); + int timeout = kbc->pdata->scan_timeout_cnt/32 + 200; + unsigned long int_st; dev_dbg(&pdev->dev, "KBC: tegra_kbc_suspend\n"); if (device_may_wakeup(&pdev->dev) && (kbc->pdata->is_wake_on_any_key || kbc->pdata->wake_key_cnt)) { + timeout = timeout/10; + while (timeout--) { + int_st = readl(kbc->mmio + KBC_INT_0); + if (int_st & 0x8) { + msleep(10); + continue; + } + break; + } tegra_kbc_setup_wakekeys(kbc, true); enable_irq_wake(kbc->irq); /* Forcefully clear the interrupt status */ |