rga_read
intr = rga_read(rga, RGA_INT) & 0xf;
rga->version.major = (rga_read(rga, RGA_VERSION_INFO) >> 24) & 0xFF;
rga->version.minor = (rga_read(rga, RGA_VERSION_INFO) >> 20) & 0x0F;
u32 temp = rga_read(rga, reg) & ~(mask);