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spi: zynq_spi: Store cs value into private data

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Store cs value into private data and use it while activating
chipselect instead of passing through function.

Signed-off-by: Jagan Teki <jteki@openedev.com>
This commit is contained in:
Jagan Teki 2015-08-17 18:31:39 +05:30
parent dda6241a1d
commit 191269987c
1 changed files with 5 additions and 3 deletions
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8
drivers/spi/zynq_spi.c
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@ -65,6 +65,7 @@ struct zynq_spi_platdata {
/* zynq spi priv */
struct zynq_spi_priv {
struct zynq_spi_regs *regs;
u8 cs;
u8 mode;
u8 fifo_depth;
u32 freq; /* required frequency */
@ -132,7 +133,7 @@ static int zynq_spi_probe(struct udevice *bus)
return 0;
}
static void spi_cs_activate(struct udevice *dev, uint cs)
static void spi_cs_activate(struct udevice *dev)
{
struct udevice *bus = dev->parent;
struct zynq_spi_priv *priv = dev_get_priv(bus);
@ -147,7 +148,7 @@ static void spi_cs_activate(struct udevice *dev, uint cs)
* xx01 - cs1
* x011 - cs2
*/
cr |= (~(0x1 << cs) << ZYNQ_SPI_CR_SS_SHIFT) & ZYNQ_SPI_CR_CS_MASK;
cr |= (~(1 << priv->cs) << ZYNQ_SPI_CR_SS_SHIFT) & ZYNQ_SPI_CR_CS_MASK;
writel(cr, &regs->cr);
}
@ -203,8 +204,9 @@ static int zynq_spi_xfer(struct udevice *dev, unsigned int bitlen,
return -1;
}
priv->cs = slave_plat->cs;
if (flags & SPI_XFER_BEGIN)
spi_cs_activate(dev, slave_plat->cs);
spi_cs_activate(dev);
while (rx_len > 0) {
/* Write the data into TX FIFO - tx threshold is fifo_depth */