nv-tegra-mirror/linux-nvgpu
1
0
Fork 0
mirror of git://nv-tegra.nvidia.com/linux-nvgpu.git synced 2025-12-22 17:36:20 +03:00
Code Issues Packages Projects Releases Wiki Activity

gpu: nvgpu: add is_railgated() callback

Browse Source 
Add is_railgated() platform callback to check status
of gk20a power rail

Bug 1376916
Bug 1487804

Change-Id: Ia0d909210dc409ab684eb6f20528b81500aecd5c
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
This commit is contained in:
Deepak Nibade
2014-05-27 19:50:09 +05:30
committed by Dan Willemsen
parent cd9f8553ad
commit 2ad53bb4ca
2 changed files with 16 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/gpu/nvgpu/gk20a/platform_gk20a.h
View File

@@ -88,6 +88,9 @@ struct gk20a_platform {
/* Called to turn on the device */
int (*unrailgate)(struct platform_device *dev);
/* Called to check state of device */
bool (*is_railgated)(struct platform_device *dev);
/* Postscale callback is called after frequency change */
void (*postscale)(struct platform_device *pdev,
unsigned long freq);

13
drivers/gpu/nvgpu/gk20a/platform_gk20a_tegra.c
View File

@@ -304,6 +304,17 @@ void gk20a_tegra_calibrate_emc(struct gk20a_emc_params *emc_params,
emc_params->emc_dip_offset -= correction;
}
/*
* gk20a_tegra_is_railgated()
*
* Check status of gk20a power rail
*/
static bool gk20a_tegra_is_railgated(struct platform_device *pdev)
{
return !tegra_powergate_is_powered(TEGRA_POWERGATE_GPU);
}
/*
* gk20a_tegra_railgate()
*
@@ -504,6 +515,7 @@ struct gk20a_platform t132_gk20a_tegra_platform = {
.suspend = gk20a_tegra_suspend,
.railgate = gk20a_tegra_railgate,
.unrailgate = gk20a_tegra_unrailgate,
.is_railgated = gk20a_tegra_is_railgated,
/* frequency scaling configuration */
.prescale = gk20a_tegra_prescale,
@@ -530,6 +542,7 @@ struct gk20a_platform gk20a_tegra_platform = {
.suspend = gk20a_tegra_suspend,
.railgate = gk20a_tegra_railgate,
.unrailgate = gk20a_tegra_unrailgate,
.is_railgated = gk20a_tegra_is_railgated,
/* frequency scaling configuration */
.prescale = gk20a_tegra_prescale,