MAX_REG_TYPE_NR
enum g2d_reg_type reg_types[MAX_REG_TYPE_NR];
void *obj[MAX_REG_TYPE_NR];
unsigned int types[MAX_REG_TYPE_NR];
struct g2d_buf_desc descs[MAX_REG_TYPE_NR];
for (i = 0; i < MAX_REG_TYPE_NR; i++)