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spi: sun4i: Support fifo_depth via drvdata

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Support fifo_depth via drvdata instead of macro definition, this would
eventually reduce another macro definition for new SPI controller fifo
depth support addition.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
This commit is contained in:
Jagan Teki 2019-02-27 20:02:09 +05:30
parent 8d9bf46847
commit 178fbd243d
1 changed files with 3 additions and 3 deletions
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6
drivers/spi/sun4i_spi.c
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@ -33,8 +33,6 @@
#include <linux/iopoll.h>
#define SUN4I_FIFO_DEPTH 64
#define SUN4I_RXDATA_REG 0x00
#define SUN4I_TXDATA_REG 0x04
@ -131,6 +129,7 @@ enum sun4i_spi_bits {
struct sun4i_spi_variant {
const unsigned long *regs;
const u32 *bits;
u32 fifo_depth;
};
struct sun4i_spi_platdata {
@ -359,7 +358,7 @@ static int sun4i_spi_xfer(struct udevice *dev, unsigned int bitlen,
while (len) {
/* Setup the transfer now... */
nbytes = min(len, (u32)(SUN4I_FIFO_DEPTH - 1));
nbytes = min(len, (priv->variant->fifo_depth - 1));
/* Setup the counters */
writel(SUN4I_BURST_CNT(nbytes), SPI_REG(priv, SPI_BC));
@ -503,6 +502,7 @@ static const u32 sun4i_spi_bits[] = {
static const struct sun4i_spi_variant sun4i_a10_spi_variant = {
.regs = sun4i_spi_regs,
.bits = sun4i_spi_bits,
.fifo_depth = 64,
};
static const struct udevice_id sun4i_spi_ids[] = {