diff options
| author | Vaibhav Hiremath <vaibhav.hiremath@linaro.org> | 2016-02-25 04:37:37 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@google.com> | 2016-02-25 16:24:23 -0800 |
| commit | 16fe18ca9ef0a3d806d33121a3a653138a1a6854 (patch) | |
| tree | d8a9aab8615c6194c4194d0a9dc9c6081f7401f6 /drivers | |
| parent | f760bbfb5c10952739fd0d39869cdd6a43844037 (diff) | |
greybus: arche-platform: Assert wake/detect after SVC reset without delay
Since now driver supports interrupt based mechanism to read events
from SVC over wake/detect line, no need to delay wake/detect assertion.
We can assert wake/detect after SVC reset deassertion, so during boot
itself SVC will start sending wake_out pulses.
Testing Done: Tested on DB3.5 platform.
Signed-off-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org>
Reviewed-by: Michael Scott <michael.scott@linaro.org>
Tested-by: Michael Scott <michael.scott@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/staging/greybus/arche-platform.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/staging/greybus/arche-platform.c b/drivers/staging/greybus/arche-platform.c index 83db892a8a5d..87526b2bf0a9 100644 --- a/drivers/staging/greybus/arche-platform.c +++ b/drivers/staging/greybus/arche-platform.c @@ -115,6 +115,16 @@ static void hub_conf_delayed_work(struct work_struct *work) dev_warn(arche_pdata->dev, "failed to control hub device\n"); } +static void assert_wakedetect(struct arche_platform_drvdata *arche_pdata) +{ + /* Assert wake/detect = Detect event from AP */ + gpio_direction_output(arche_pdata->wake_detect_gpio, 1); + + /* Enable interrupt here, to read event back from SVC */ + gpio_direction_input(arche_pdata->wake_detect_gpio); + enable_irq(arche_pdata->wake_detect_irq); +} + static irqreturn_t arche_platform_wd_irq_thread(int irq, void *devid) { struct arche_platform_drvdata *arche_pdata = devid; @@ -297,6 +307,8 @@ static ssize_t state_store(struct device *dev, return count; ret = arche_platform_coldboot_seq(arche_pdata); + + assert_wakedetect(arche_pdata); } else if (sysfs_streq(buf, "standby")) { if (arche_pdata->state == ARCHE_PLATFORM_STATE_STANDBY) return count; @@ -482,6 +494,7 @@ static int arche_platform_probe(struct platform_device *pdev) goto err_populate; } + assert_wakedetect(arche_pdata); INIT_DELAYED_WORK(&arche_pdata->delayed_work, hub_conf_delayed_work); dev_info(dev, "Device registered successfully\n"); |