From: Bin Meng <bmeng.cn@gmail.com>
Date: Fri, 24 Apr 2015 11:51:10 +0000 (+0800)
Subject: dm: sf: Make SST flash write op work again
X-Git-Tag: v2015.07-rc1~64^2~1
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=074eed5146acc39a77f15ecdc8404b3ba74aa3ae;p=oweals%2Fu-boot.git

dm: sf: Make SST flash write op work again

With SPI flash moving to driver model, commit fbb0991 "dm: Convert
spi_flash_probe() and 'sf probe' to use driver model" ignored the
SST flash-specific write op (byte program & word program), which
actually broke the SST flash from wroking.

This commit makes SST flash work again under driver model, by adding
SST flash-specific handling in the spi_flash_std_write().

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
---

diff --git a/drivers/mtd/spi/sf_probe.c b/drivers/mtd/spi/sf_probe.c
index d8ab6a1ecc..d8b9fcaeae 100644
--- a/drivers/mtd/spi/sf_probe.c
+++ b/drivers/mtd/spi/sf_probe.c
@@ -446,6 +446,15 @@ int spi_flash_std_write(struct udevice *dev, u32 offset, size_t len,
 {
 	struct spi_flash *flash = dev_get_uclass_priv(dev);
 
+#if defined(CONFIG_SPI_FLASH_SST)
+	if (flash->flags & SST_WR) {
+		if (flash->spi->op_mode_tx & SPI_OPM_TX_BP)
+			return sst_write_bp(flash, offset, len, buf);
+		else
+			return sst_write_wp(flash, offset, len, buf);
+	}
+#endif
+
 	return spi_flash_cmd_write_ops(flash, offset, len, buf);
 }