[U-Boot] [PATCH v3 5/9] spi: sun4i: Support fifo_depth via drvdata

Jagan Teki
2019-02-27T14:32:09Z

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>
---
drivers/spi/sun4i_spi.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/spi/sun4i_spi.c b/drivers/spi/sun4i_spi.c
index be026e6554..82e69a6b6a 100644
--- a/drivers/spi/sun4i_spi.c
+++ b/drivers/spi/sun4i_spi.c
@@ -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[] = {
--
2.18.0.321.gffc6fa0e3