nv-tegra-mirror/linux-nv-oot
1
0
Fork 0
mirror of git://nv-tegra.nvidia.com/linux-nv-oot.git synced 2025-12-22 09:11:26 +03:00
Code Issues Packages Projects Releases Wiki Activity

drivers:nvpps:Avoid freeing & re-request of PPS IRQ

Browse Source 
Avoid freeing & re-requesting of PPS IRQ when
switching between nvpps operating modes

Bug 4007008
Bug 4079057

Change-Id: I193416b8cb37ed0d4fc5241e64d8109805bf330f
Signed-off-by: Sheetal Tigadoli <stigadoli@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2914267
(cherry picked from commit ab9551812254c359dd6e5fd094b23fcfa921f67b)
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3003992
Reviewed-by: Sumeet Gupta <sumeetg@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
This commit is contained in:
Sheetal Tigadoli
2023-06-01 16:33:00 +00:00
committed by mobile promotions
parent 1267ce01fe
commit 3a40a01b9e
1 changed files with 18 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
drivers/nvpps/nvpps_main.c
View File

@@ -382,8 +382,14 @@ static irqreturn_t nvpps_gpio_isr(int irq, void *data)
{ {
struct nvpps_device_data *pdev_data = (struct nvpps_device_data *)data; struct nvpps_device_data *pdev_data = (struct nvpps_device_data *)data;
/* Incase, if an interrupt is generated
* then check current mode in use. Ignore the
* interrupt if current mode is TIMER mode
*/
if (!pdev_data->timer_inited) {
/* get timestamps for this event */ /* get timestamps for this event */
nvpps_get_ts(pdev_data, true); nvpps_get_ts(pdev_data, true);
}
return IRQ_HANDLED; return IRQ_HANDLED;
} }
@@ -479,6 +485,8 @@ static int set_mode(struct nvpps_device_data *pdev_data, u32 mode)
pdev_data->irq_registered = true; pdev_data->irq_registered = true;
dev_info(pdev_data->dev, "Registered IRQ %d for nvpps\n", pdev_data->irq); dev_info(pdev_data->dev, "Registered IRQ %d for nvpps\n", pdev_data->irq);
} }
} else {
dev_dbg(pdev_data->dev, "IRQ %d for nvpps is already registered\n", pdev_data->irq);
} }
} else { } else {
dev_err(pdev_data->dev, "unable to switch mode. Only timer mode is supported\n"); dev_err(pdev_data->dev, "unable to switch mode. Only timer mode is supported\n");
@@ -487,12 +495,14 @@ static int set_mode(struct nvpps_device_data *pdev_data, u32 mode)
break; break;
case NVPPS_MODE_TIMER: case NVPPS_MODE_TIMER:
if (pdev_data->irq_registered) { /* If GPIO mode is run and IRQ is registered previously,
/* unregister IRQ handler */ * then don't free the already requested IRQ. This is to
devm_free_irq(pdev_data->dev, pdev_data->irq, pdev_data); * avoid free'ing and re-registering of the IRQ when
pdev_data->irq_registered = false; * switching b/w the operating modes.
dev_info(pdev_data->dev, "removed IRQ %d for nvpps\n", pdev_data->irq); */
} /* If TIMER mode is requested and not initialized
* already then initialize it
*/
if (!pdev_data->timer_inited) { if (!pdev_data->timer_inited) {
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0) #if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0)
setup_timer(&pdev_data->timer, setup_timer(&pdev_data->timer,