QUEUE_THLD_CTRL
thld_ctrl = readl(master->regs + QUEUE_THLD_CTRL);
writel(thld_ctrl, master->regs + QUEUE_THLD_CTRL);
thld_ctrl = readl(master->regs + QUEUE_THLD_CTRL);
writel(thld_ctrl, master->regs + QUEUE_THLD_CTRL);
data = reg_read(QUEUE_THLD_CTRL);
reg_write(QUEUE_THLD_CTRL, data);
pio_reg_write(QUEUE_THLD_CTRL, val);
pio_reg_write(QUEUE_THLD_CTRL, regval);