TACH_ASPEED_CTRL
writel(readl(priv->base + TACH_ASPEED_CTRL(tach_ch)) |
priv->base + TACH_ASPEED_CTRL(tach_ch));
writel(readl(priv->base + TACH_ASPEED_CTRL(tach_ch)) &
priv->base + TACH_ASPEED_CTRL(tach_ch));
reg_val = readl(priv->base + TACH_ASPEED_CTRL(channel));
reg_val = readl(priv->base + TACH_ASPEED_CTRL(channel));
writel(reg_val, priv->base + TACH_ASPEED_CTRL(channel));
val = readl(priv->base + TACH_ASPEED_CTRL(ch));
writel(val, priv->base + TACH_ASPEED_CTRL(ch));