nv-tegra-mirror/linux-nv-oot
1
0
Fork 0
mirror of git://nv-tegra.nvidia.com/linux-nv-oot.git synced 2025-12-24 10:11:26 +03:00
Code Issues Packages Projects Releases Wiki Activity

tegra: host: nvdla: Add debug to reload firmware

Browse Source 
Writing "1" to /sys/kernel/debug/nvdlaX/firmware/reload will trigger the
reload of the DLA firmware.

Change-Id: I5d411c05811bd77011b19cc54aa2065b5a301363
Signed-off-by: Jon Mayo <jmayo@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1603515
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Shridhar Rasal <srasal@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Jon Mayo
2017-11-16 12:52:54 -08:00
committed by Laxman Dewangan
parent 978b83a652
commit 30427bb55e
1 changed files with 63 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

63
drivers/video/tegra/host/nvdla/nvdla_debug.c
View File

@@ -484,6 +484,57 @@ invalid_input:
return ret;
}
static ssize_t debug_dla_fw_reload_set(struct file *file,
const char __user *buffer, size_t count, loff_t *off)
{
int err;
struct seq_file *p = file->private_data;
struct nvdla_device *nvdla_dev;
struct platform_device *pdev;
long val;
if (!p)
return -EFAULT;
nvdla_dev = (struct nvdla_device *)p->private;
if (!nvdla_dev)
return -EFAULT;
pdev = nvdla_dev->pdev;
if (!pdev)
return -EFAULT;
err = kstrtol_from_user(buffer, count, 10, &val);
if (err < 0)
return err;
if (!val)
return count; /* "0" does nothing */
nvdla_dbg_info(pdev, "firmware reload requested.\n");
nvhost_module_idle(pdev); /* hack around ref counting */
err = flcn_reload_fw(pdev);
if (err)
return err; /* propagate firmware reload errors */
err = nvhost_module_busy(pdev);
if (err)
return err;
return count;
}
static int debug_dla_fw_reload_show(struct seq_file *s, void *data)
{
seq_puts(s, "0\n");
return 0;
}
static int debug_dla_fw_reload_open(struct inode *inode, struct file *file)
{
return single_open(file, debug_dla_fw_reload_show, inode->i_private);
}
static const struct file_operations debug_dla_enable_trace_fops = {
.open = debug_dla_enable_trace_open,
.read = seq_read,
@@ -536,6 +587,14 @@ static const struct file_operations debug_dla_fw_gcov_gcda_fops = {
.release = single_release,
};
static const struct file_operations nvdla_fw_reload_fops = {
.open = debug_dla_fw_reload_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.write = debug_dla_fw_reload_set,
};
static void dla_fw_debugfs_init(struct platform_device *pdev)
{
struct dentry *fw_dir, *fw_trace, *events, *fw_gcov;
@@ -554,6 +613,10 @@ static void dla_fw_debugfs_init(struct platform_device *pdev)
nvdla_dev, &nvdla_fw_ver_fops))
goto trace_failed;
if (!debugfs_create_file("reload", 0600, fw_dir,
nvdla_dev, &nvdla_fw_reload_fops))
goto trace_failed;
fw_trace = debugfs_create_dir("trace", fw_dir);
if (!fw_trace)
goto trace_failed;