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spi: sun4i: Simplify reg writes using set/clrbits_le32
Update the existing register writes using setbits_le32 and clrbits_le32 in required places. Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
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parent
82111469a5
commit
8cbf09ba1c
1 changed files with 8 additions and 13 deletions
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@ -283,20 +283,18 @@ static int sun4i_spi_claim_bus(struct udevice *dev)
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{
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struct sun4i_spi_priv *priv = dev_get_priv(dev->parent);
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writel(SUN4I_CTL_ENABLE | SUN4I_CTL_MASTER | SUN4I_CTL_TP |
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SUN4I_CTL_CS_MANUAL | SUN4I_CTL_CS_ACTIVE_LOW,
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&priv->regs->ctl);
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setbits_le32(&priv->regs->ctl, SUN4I_CTL_ENABLE |
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SUN4I_CTL_MASTER | SUN4I_CTL_TP |
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SUN4I_CTL_CS_MANUAL | SUN4I_CTL_CS_ACTIVE_LOW);
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return 0;
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}
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static int sun4i_spi_release_bus(struct udevice *dev)
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{
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struct sun4i_spi_priv *priv = dev_get_priv(dev->parent);
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u32 reg;
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reg = readl(&priv->regs->ctl);
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reg &= ~SUN4I_CTL_ENABLE;
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writel(reg, &priv->regs->ctl);
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clrbits_le32(&priv->regs->ctl, SUN4I_CTL_ENABLE);
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return 0;
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}
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@ -309,7 +307,7 @@ static int sun4i_spi_xfer(struct udevice *dev, unsigned int bitlen,
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struct dm_spi_slave_platdata *slave_plat = dev_get_parent_platdata(dev);
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u32 len = bitlen / 8;
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u32 reg, rx_fifocnt;
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u32 rx_fifocnt;
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u8 nbytes;
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int ret;
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@ -324,10 +322,8 @@ static int sun4i_spi_xfer(struct udevice *dev, unsigned int bitlen,
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if (flags & SPI_XFER_BEGIN)
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sun4i_spi_set_cs(bus, slave_plat->cs, true);
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reg = readl(&priv->regs->ctl);
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/* Reset FIFOs */
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writel(reg | SUN4I_CTL_RF_RST | SUN4I_CTL_TF_RST, &priv->regs->ctl);
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setbits_le32(&priv->regs->ctl, SUN4I_CTL_RF_RST | SUN4I_CTL_TF_RST);
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while (len) {
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/* Setup the transfer now... */
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@ -341,8 +337,7 @@ static int sun4i_spi_xfer(struct udevice *dev, unsigned int bitlen,
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sun4i_spi_fill_fifo(priv, nbytes);
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/* Start the transfer */
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reg = readl(&priv->regs->ctl);
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writel(reg | SUN4I_CTL_XCH, &priv->regs->ctl);
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setbits_le32(&priv->regs->ctl, SUN4I_CTL_XCH);
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/* Wait till RX FIFO to be empty */
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ret = readl_poll_timeout(&priv->regs->fifo_sta, rx_fifocnt,
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