The SSR (SubSystem Restart) is used to simulate an error on FW side of Venus. We support following type of triggers - fatal error, div by zero and watchdog IRQ. Signed-off-by: Stanimir Varbanov <stanimir.varbanov@xxxxxxxxxx> --- drivers/media/platform/qcom/venus/dbgfs.c | 30 +++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/drivers/media/platform/qcom/venus/dbgfs.c b/drivers/media/platform/qcom/venus/dbgfs.c index 782d54ac1b8f..f95b7b1febe5 100644 --- a/drivers/media/platform/qcom/venus/dbgfs.c +++ b/drivers/media/platform/qcom/venus/dbgfs.c @@ -9,10 +9,40 @@ extern int venus_fw_debug; +static int trigger_ssr_open(struct inode *inode, struct file *file) +{ + file->private_data = inode->i_private; + return 0; +} + +static ssize_t trigger_ssr_write(struct file *filp, const char __user *buf, + size_t count, loff_t *ppos) +{ + struct venus_core *core = filp->private_data; + u32 ssr_type; + int ret; + + ret = kstrtou32_from_user(buf, count, 4, &ssr_type); + if (ret) + return ret; + + ret = hfi_core_trigger_ssr(core, ssr_type); + if (ret < 0) + return ret; + + return count; +} + +static const struct file_operations ssr_fops = { + .open = trigger_ssr_open, + .write = trigger_ssr_write, +}; + void venus_dbgfs_init(struct venus_core *core) { core->root = debugfs_create_dir("venus", NULL); debugfs_create_x32("fw_level", 0644, core->root, &venus_fw_debug); + debugfs_create_file("trigger_ssr", 0200, core->root, core, &ssr_fops); } void venus_dbgfs_deinit(struct venus_core *core) -- 2.17.1