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gpu: nvgpu: create generic name for sysfs module

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Make gpu sysfs name same across different chips.
If gpu device name is different from "gpu.0", then
create symlink with generic name under same parent.

Generic gpu syfs module path: /sys/devices/gpu.0

Bug 200161014

Change-Id: I9a7d5971c069d5a33f8e5c811d4578231f710878
Signed-off-by: Seshendra Gadagottu <sgadagottu@nvidia.com>
Reviewed-on: http://git-master/r/840742
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
This commit is contained in:
Seshendra Gadagottu
2015-11-12 09:25:19 -08:00
committed by Terje Bergstrom
parent 1c40d09c4c
commit 2e0770fecc
1 changed files with 18 additions and 3 deletions
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21
drivers/gpu/nvgpu/gk20a/gk20a_sysfs.c
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@@ -30,7 +30,6 @@
#include "fifo_gk20a.h"
#include "pmu_gk20a.h"
#define PTIMER_FP_FACTOR 1000000
#define ROOTRW (S_IRWXU|S_IRGRP|S_IROTH)
@@ -787,8 +786,15 @@ void gk20a_remove_sysfs(struct device *dev)
device_remove_file(dev, &dev_attr_allow_all);
device_remove_file(dev, &dev_attr_tpc_fs_mask);
if (g->host1x_dev && (dev->parent != &g->host1x_dev->dev))
if (g->host1x_dev && (dev->parent != &g->host1x_dev->dev)) {
sysfs_remove_link(&g->host1x_dev->dev.kobj, dev_name(dev));
if (strcmp(dev_name(dev), "gpu.0")) {
struct kobject *kobj = &dev->kobj;
struct device *parent = container_of((kobj->parent),
struct device, kobj);
sysfs_remove_link(&parent->kobj, "gpu.0");
}
}
}
void gk20a_create_sysfs(struct platform_device *dev)
@@ -820,10 +826,19 @@ void gk20a_create_sysfs(struct platform_device *dev)
error |= device_create_file(&dev->dev, &dev_attr_allow_all);
error |= device_create_file(&dev->dev, &dev_attr_tpc_fs_mask);
if (g->host1x_dev && (dev->dev.parent != &g->host1x_dev->dev))
if (g->host1x_dev && (dev->dev.parent != &g->host1x_dev->dev)) {
error |= sysfs_create_link(&g->host1x_dev->dev.kobj,
&dev->dev.kobj,
dev_name(&dev->dev));
if (strcmp(dev_name(&dev->dev), "gpu.0")) {
struct kobject *kobj = &dev->dev.kobj;
struct device *parent = container_of((kobj->parent),
struct device, kobj);
error |= sysfs_create_link(&parent->kobj,
&dev->dev.kobj, "gpu.0");
}
}
if (error)
dev_err(&dev->dev, "Failed to create sysfs attributes!\n");