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gpu: nvgpu: Disable rail gating for dGPU

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Bug 200224907

Change-Id: I515bba1987e54fb5ab78efda85916b6f0d3a4297
Signed-off-by: Lakshmanan M <lm@nvidia.com>
Reviewed-on: http://git-master/r/1201233
(cherry picked from commit aa45908e77d451376728860cebe3938e765c4388)
Reviewed-on: http://git-master/r/1201654
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
This commit is contained in:
Lakshmanan M
2016-08-11 16:56:01 +05:30
committed by Terje Bergstrom
parent 6effe31755
commit 1b216d778a
1 changed files with 15 additions and 10 deletions
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25
drivers/gpu/nvgpu/pci.c
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@@ -47,6 +47,7 @@ static struct gk20a_platform nvgpu_pci_device = {
/* power management configuration */
.railgate_delay = 500,
.can_railgate = false,
.can_elpg = false,
/* power management callbacks */
@@ -165,17 +166,21 @@ static int nvgpu_pci_pm_init(struct device *dev)
#ifdef CONFIG_PM
struct gk20a_platform *platform = gk20a_get_platform(dev);
if (platform->railgate_delay)
pm_runtime_set_autosuspend_delay(dev,
platform->railgate_delay);
if (!platform->can_railgate) {
pm_runtime_disable(dev);
} else {
if (platform->railgate_delay)
pm_runtime_set_autosuspend_delay(dev,
platform->railgate_delay);
/*
* Runtime PM for PCI devices is disabled by default,
* so we need to enable it first
*/
pm_runtime_use_autosuspend(dev);
pm_runtime_put_noidle(dev);
pm_runtime_allow(dev);
/*
* Runtime PM for PCI devices is disabled by default,
* so we need to enable it first
*/
pm_runtime_use_autosuspend(dev);
pm_runtime_put_noidle(dev);
pm_runtime_allow(dev);
}
#endif
return 0;
}