CX25840_IR_IRQEN_REG
ir_en = cx25840_read(c, CX25840_IR_IRQEN_REG);
irqen = cx25840_read4(c, CX25840_IR_IRQEN_REG);
cx25840_write4(ir_state->c, CX25840_IR_IRQEN_REG, IRQEN_MSK);
cx25840_write4(ir_state->c, CX25840_IR_IRQEN_REG, 0);
cx25840_and_or4(state->c, CX25840_IR_IRQEN_REG,
cx25840_and_or4(state->c, CX25840_IR_IRQEN_REG, ~IRQEN_TSE, mask);
irqen = cx25840_read4(c, CX25840_IR_IRQEN_REG);