MHL_TX_INTR1_ENABLE_REG
mhl_tx_writeb(ctx, MHL_TX_INTR1_ENABLE_REG, 0x60);
mhl_tx_writeb(ctx, MHL_TX_INTR1_ENABLE_REG,
intr1_en = mhl_tx_readb(ctx, MHL_TX_INTR1_ENABLE_REG);