summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/msm/msm_debugfs.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpu/drm/msm/msm_debugfs.c')
-rw-r--r--drivers/gpu/drm/msm/msm_debugfs.c93
1 files changed, 85 insertions, 8 deletions
diff --git a/drivers/gpu/drm/msm/msm_debugfs.c b/drivers/gpu/drm/msm/msm_debugfs.c
index 1ff3fda245d1..f0da0d3c8a80 100644
--- a/drivers/gpu/drm/msm/msm_debugfs.c
+++ b/drivers/gpu/drm/msm/msm_debugfs.c
@@ -16,26 +16,101 @@
*/
#ifdef CONFIG_DEBUG_FS
+#include <linux/debugfs.h>
#include "msm_drv.h"
#include "msm_gpu.h"
#include "msm_kms.h"
#include "msm_debugfs.h"
-static int msm_gpu_show(struct drm_device *dev, struct seq_file *m)
+struct msm_gpu_show_priv {
+ struct msm_gpu_state *state;
+ struct drm_device *dev;
+};
+
+static int msm_gpu_show(struct seq_file *m, void *arg)
+{
+ struct drm_printer p = drm_seq_file_printer(m);
+ struct msm_gpu_show_priv *show_priv = m->private;
+ struct msm_drm_private *priv = show_priv->dev->dev_private;
+ struct msm_gpu *gpu = priv->gpu;
+ int ret;
+
+ ret = mutex_lock_interruptible(&show_priv->dev->struct_mutex);
+ if (ret)
+ return ret;
+
+ drm_printf(&p, "%s Status:\n", gpu->name);
+ gpu->funcs->show(gpu, show_priv->state, &p);
+
+ mutex_unlock(&show_priv->dev->struct_mutex);
+
+ return 0;
+}
+
+static int msm_gpu_release(struct inode *inode, struct file *file)
{
+ struct seq_file *m = file->private_data;
+ struct msm_gpu_show_priv *show_priv = m->private;
+ struct msm_drm_private *priv = show_priv->dev->dev_private;
+ struct msm_gpu *gpu = priv->gpu;
+ int ret;
+
+ ret = mutex_lock_interruptible(&show_priv->dev->struct_mutex);
+ if (ret)
+ return ret;
+
+ gpu->funcs->gpu_state_put(show_priv->state);
+ mutex_unlock(&show_priv->dev->struct_mutex);
+
+ kfree(show_priv);
+
+ return single_release(inode, file);
+}
+
+static int msm_gpu_open(struct inode *inode, struct file *file)
+{
+ struct drm_device *dev = inode->i_private;
struct msm_drm_private *priv = dev->dev_private;
struct msm_gpu *gpu = priv->gpu;
+ struct msm_gpu_show_priv *show_priv;
+ int ret;
- if (gpu) {
- seq_printf(m, "%s Status:\n", gpu->name);
- pm_runtime_get_sync(&gpu->pdev->dev);
- gpu->funcs->show(gpu, m);
- pm_runtime_put_sync(&gpu->pdev->dev);
+ if (!gpu)
+ return -ENODEV;
+
+ show_priv = kmalloc(sizeof(*show_priv), GFP_KERNEL);
+ if (!show_priv)
+ return -ENOMEM;
+
+ ret = mutex_lock_interruptible(&dev->struct_mutex);
+ if (ret)
+ return ret;
+
+ pm_runtime_get_sync(&gpu->pdev->dev);
+ show_priv->state = gpu->funcs->gpu_state_get(gpu);
+ pm_runtime_put_sync(&gpu->pdev->dev);
+
+ mutex_unlock(&dev->struct_mutex);
+
+ if (IS_ERR(show_priv->state)) {
+ ret = PTR_ERR(show_priv->state);
+ kfree(show_priv);
+ return ret;
}
- return 0;
+ show_priv->dev = dev;
+
+ return single_open(file, msm_gpu_show, show_priv);
}
+static const struct file_operations msm_gpu_fops = {
+ .owner = THIS_MODULE,
+ .open = msm_gpu_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = msm_gpu_release,
+};
+
static int msm_gem_show(struct drm_device *dev, struct seq_file *m)
{
struct msm_drm_private *priv = dev->dev_private;
@@ -105,7 +180,6 @@ static int show_locked(struct seq_file *m, void *arg)
}
static struct drm_info_list msm_debugfs_list[] = {
- {"gpu", show_locked, 0, msm_gpu_show},
{"gem", show_locked, 0, msm_gem_show},
{ "mm", show_locked, 0, msm_mm_show },
{ "fb", show_locked, 0, msm_fb_show },
@@ -158,6 +232,9 @@ int msm_debugfs_init(struct drm_minor *minor)
return ret;
}
+ debugfs_create_file("gpu", S_IRUSR, minor->debugfs_root,
+ dev, &msm_gpu_fops);
+
if (priv->kms->funcs->debugfs_init) {
ret = priv->kms->funcs->debugfs_init(priv->kms, minor);
if (ret)