brain-hackers_pepepper-mirror/u-boot-brain
1
0
Fork 0
mirror of https://github.com/brain-hackers/u-boot-brain synced 2024-06-09 23:36:03 +09:00
Code Issues Projects Releases Wiki Activity

spi: bcm63xx_hsspi: switch to raw I/O functions.

Browse Source 
Make the driver compatible with both big and little endian SOCs.
Replace big-endian calls with their raw equivalents, expect for
writing the command to FIFO. That still has to be in big-endian
format.

Signed-off-by: Kursad Oney <kursad.oney@broadcom.com>
Reviewed-by: Philippe Reynes <philippe.reynes@softathome.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
This commit is contained in:
Kursad Oney 2019-08-14 15:18:34 +02:00 committed by Tom Rini
parent c50d670c56
commit 3ae64e8f25
1 changed files with 14 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
drivers/spi/bcm63xx_hsspi.c
View File

@ -120,9 +120,9 @@ static int bcm63xx_hsspi_set_mode(struct udevice *bus, uint mode)
/* clock polarity */
if (mode & SPI_CPOL)
setbits_be32(priv->regs + SPI_CTL_REG, SPI_CTL_CLK_POL_MASK);
setbits_32(priv->regs + SPI_CTL_REG, SPI_CTL_CLK_POL_MASK);
else
clrbits_be32(priv->regs + SPI_CTL_REG, SPI_CTL_CLK_POL_MASK);
clrbits_32(priv->regs + SPI_CTL_REG, SPI_CTL_CLK_POL_MASK);
return 0;
}
@ -146,7 +146,7 @@ static void bcm63xx_hsspi_activate_cs(struct bcm63xx_hsspi_priv *priv,
set = DIV_ROUND_UP(2048, set);
set &= SPI_PFL_CLK_FREQ_MASK;
set |= SPI_PFL_CLK_RSTLOOP_MASK;
writel_be(set, priv->regs + SPI_PFL_CLK_REG(plat->cs));
writel(set, priv->regs + SPI_PFL_CLK_REG(plat->cs));
/* profile signal */
set = 0;
@ -164,7 +164,7 @@ static void bcm63xx_hsspi_activate_cs(struct bcm63xx_hsspi_priv *priv,
if (priv->speed > SPI_MAX_SYNC_CLOCK)
set |= SPI_PFL_SIG_ASYNCIN_MASK;
clrsetbits_be32(priv->regs + SPI_PFL_SIG_REG(plat->cs), clr, set);
clrsetbits_32(priv->regs + SPI_PFL_SIG_REG(plat->cs), clr, set);
/* global control */
set = 0;
@ -182,13 +182,13 @@ static void bcm63xx_hsspi_activate_cs(struct bcm63xx_hsspi_priv *priv,
else
set |= BIT(!plat->cs);
clrsetbits_be32(priv->regs + SPI_CTL_REG, clr, set);
clrsetbits_32(priv->regs + SPI_CTL_REG, clr, set);
}
static void bcm63xx_hsspi_deactivate_cs(struct bcm63xx_hsspi_priv *priv)
{
/* restore cs polarities */
clrsetbits_be32(priv->regs + SPI_CTL_REG, SPI_CTL_CS_POL_MASK,
clrsetbits_32(priv->regs + SPI_CTL_REG, SPI_CTL_CS_POL_MASK,
priv->cs_pols);
}
@ -247,7 +247,7 @@ static int bcm63xx_hsspi_xfer(struct udevice *dev, unsigned int bitlen,
SPI_PFL_MODE_MDWRSZ_MASK;
if (plat->mode & SPI_3WIRE)
val |= SPI_PFL_MODE_3WIRE_MASK;
writel_be(val, priv->regs + SPI_PFL_MODE_REG(plat->cs));
writel(val, priv->regs + SPI_PFL_MODE_REG(plat->cs));
/* transfer loop */
while (data_bytes > 0) {
@ -262,7 +262,7 @@ static int bcm63xx_hsspi_xfer(struct udevice *dev, unsigned int bitlen,
}
/* set fifo operation */
writew_be(opcode | (curr_step & HSSPI_FIFO_OP_BYTES_MASK),
writew(cpu_to_be16(opcode | (curr_step & HSSPI_FIFO_OP_BYTES_MASK)),
priv->regs + HSSPI_FIFO_OP_REG);
/* issue the transfer */
@ -271,10 +271,10 @@ static int bcm63xx_hsspi_xfer(struct udevice *dev, unsigned int bitlen,
SPI_CMD_PFL_MASK;
val |= (!plat->cs << SPI_CMD_SLAVE_SHIFT) &
SPI_CMD_SLAVE_MASK;
writel_be(val, priv->regs + SPI_CMD_REG);
writel(val, priv->regs + SPI_CMD_REG);
/* wait for completion */
ret = wait_for_bit_be32(priv->regs + SPI_STAT_REG,
ret = wait_for_bit_32(priv->regs + SPI_STAT_REG,
SPI_STAT_SRCBUSY_MASK, false,
1000, false);
if (ret) {
@ -381,16 +381,16 @@ static int bcm63xx_hsspi_probe(struct udevice *dev)
return ret;
/* initialize hardware */
writel_be(0, priv->regs + SPI_IR_MASK_REG);
writel(0, priv->regs + SPI_IR_MASK_REG);
/* clear pending interrupts */
writel_be(SPI_IR_CLEAR_ALL, priv->regs + SPI_IR_STAT_REG);
writel(SPI_IR_CLEAR_ALL, priv->regs + SPI_IR_STAT_REG);
/* enable clk gate */
setbits_be32(priv->regs + SPI_CTL_REG, SPI_CTL_CLK_GATE_MASK);
setbits_32(priv->regs + SPI_CTL_REG, SPI_CTL_CLK_GATE_MASK);
/* read default cs polarities */
priv->cs_pols = readl_be(priv->regs + SPI_CTL_REG) &
priv->cs_pols = readl(priv->regs + SPI_CTL_REG) &
SPI_CTL_CS_POL_MASK;
return 0;