X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=drivers%2Fmtd%2Fspi%2Fsf_ops.c;h=1f1bb3606590319e43110923ca09711a16a5c721;hb=e97f9d817e600cd6f43d1d0da76f5787e33a5c56;hp=7ae958211e88e3f02e714ae4b215a4621204a53d;hpb=ab92224f4550f9677be32dd903e99acf1475dbf7;p=oweals%2Fu-boot.git

diff --git a/drivers/mtd/spi/sf_ops.c b/drivers/mtd/spi/sf_ops.c
index 7ae958211e..1f1bb36065 100644
--- a/drivers/mtd/spi/sf_ops.c
+++ b/drivers/mtd/spi/sf_ops.c
@@ -119,7 +119,7 @@ static int spi_flash_bank(struct spi_flash *flash, u32 offset)
 	u8 bank_sel;
 	int ret;
 
-	bank_sel = offset / SPI_FLASH_16MB_BOUN;
+	bank_sel = offset / (SPI_FLASH_16MB_BOUN << flash->shift);
 
 	ret = spi_flash_cmd_bankaddr_write(flash, bank_sel);
 	if (ret) {
@@ -131,10 +131,33 @@ static int spi_flash_bank(struct spi_flash *flash, u32 offset)
 }
 #endif
 
+#ifdef CONFIG_SF_DUAL_FLASH
+static void spi_flash_dual_flash(struct spi_flash *flash, u32 *addr)
+{
+	switch (flash->dual_flash) {
+	case SF_DUAL_STACKED_FLASH:
+		if (*addr >= (flash->size >> 1)) {
+			*addr -= flash->size >> 1;
+			flash->spi->flags |= SPI_XFER_U_PAGE;
+		} else {
+			flash->spi->flags &= ~SPI_XFER_U_PAGE;
+		}
+		break;
+	case SF_DUAL_PARALLEL_FLASH:
+		*addr >>= flash->shift;
+		break;
+	default:
+		debug("SF: Unsupported dual_flash=%d\n", flash->dual_flash);
+		break;
+	}
+}
+#endif
+
 int spi_flash_cmd_wait_ready(struct spi_flash *flash, unsigned long timeout)
 {
 	struct spi_slave *spi = flash->spi;
 	unsigned long timebase;
+	unsigned long flags = SPI_XFER_BEGIN;
 	int ret;
 	u8 status;
 	u8 check_status = 0x0;
@@ -146,7 +169,11 @@ int spi_flash_cmd_wait_ready(struct spi_flash *flash, unsigned long timeout)
 		check_status = poll_bit;
 	}
 
-	ret = spi_xfer(spi, 8, &cmd, NULL, SPI_XFER_BEGIN);
+#ifdef CONFIG_SF_DUAL_FLASH
+	if (spi->flags & SPI_XFER_U_PAGE)
+		flags |= SPI_XFER_U_PAGE;
+#endif
+	ret = spi_xfer(spi, 8, &cmd, NULL, flags);
 	if (ret) {
 		debug("SF: fail to read %s status register\n",
 		      cmd == CMD_READ_STATUS ? "read" : "flag");
@@ -219,7 +246,7 @@ int spi_flash_write_common(struct spi_flash *flash, const u8 *cmd,
 
 int spi_flash_cmd_erase_ops(struct spi_flash *flash, u32 offset, size_t len)
 {
-	u32 erase_size;
+	u32 erase_size, erase_addr;
 	u8 cmd[SPI_FLASH_CMD_LEN];
 	int ret = -1;
 
@@ -231,15 +258,21 @@ int spi_flash_cmd_erase_ops(struct spi_flash *flash, u32 offset, size_t len)
 
 	cmd[0] = flash->erase_cmd;
 	while (len) {
+		erase_addr = offset;
+
+#ifdef CONFIG_SF_DUAL_FLASH
+		if (flash->dual_flash > SF_SINGLE_FLASH)
+			spi_flash_dual_flash(flash, &erase_addr);
+#endif
 #ifdef CONFIG_SPI_FLASH_BAR
-		ret = spi_flash_bank(flash, offset);
+		ret = spi_flash_bank(flash, erase_addr);
 		if (ret < 0)
 			return ret;
 #endif
-		spi_flash_addr(offset, cmd);
+		spi_flash_addr(erase_addr, cmd);
 
 		debug("SF: erase %2x %2x %2x %2x (%x)\n", cmd[0], cmd[1],
-		      cmd[2], cmd[3], offset);
+		      cmd[2], cmd[3], erase_addr);
 
 		ret = spi_flash_write_common(flash, cmd, sizeof(cmd), NULL, 0);
 		if (ret < 0) {
@@ -258,6 +291,7 @@ int spi_flash_cmd_write_ops(struct spi_flash *flash, u32 offset,
 		size_t len, const void *buf)
 {
 	unsigned long byte_addr, page_size;
+	u32 write_addr;
 	size_t chunk_len, actual;
 	u8 cmd[SPI_FLASH_CMD_LEN];
 	int ret = -1;
@@ -266,8 +300,14 @@ int spi_flash_cmd_write_ops(struct spi_flash *flash, u32 offset,
 
 	cmd[0] = flash->write_cmd;
 	for (actual = 0; actual < len; actual += chunk_len) {
+		write_addr = offset;
+
+#ifdef CONFIG_SF_DUAL_FLASH
+		if (flash->dual_flash > SF_SINGLE_FLASH)
+			spi_flash_dual_flash(flash, &write_addr);
+#endif
 #ifdef CONFIG_SPI_FLASH_BAR
-		ret = spi_flash_bank(flash, offset);
+		ret = spi_flash_bank(flash, write_addr);
 		if (ret < 0)
 			return ret;
 #endif
@@ -277,7 +317,7 @@ int spi_flash_cmd_write_ops(struct spi_flash *flash, u32 offset,
 		if (flash->spi->max_write_size)
 			chunk_len = min(chunk_len, flash->spi->max_write_size);
 
-		spi_flash_addr(offset, cmd);
+		spi_flash_addr(write_addr, cmd);
 
 		debug("SF: 0x%p => cmd = { 0x%02x 0x%02x%02x%02x } chunk_len = %zu\n",
 		      buf + actual, cmd[0], cmd[1], cmd[2], cmd[3], chunk_len);
@@ -322,7 +362,7 @@ int spi_flash_cmd_read_ops(struct spi_flash *flash, u32 offset,
 		size_t len, void *data)
 {
 	u8 *cmd, cmdsz;
-	u32 remain_len, read_len;
+	u32 remain_len, read_len, read_addr;
 	int bank_sel = 0;
 	int ret = -1;
 
@@ -346,18 +386,25 @@ int spi_flash_cmd_read_ops(struct spi_flash *flash, u32 offset,
 
 	cmd[0] = flash->read_cmd;
 	while (len) {
+		read_addr = offset;
+
+#ifdef CONFIG_SF_DUAL_FLASH
+		if (flash->dual_flash > SF_SINGLE_FLASH)
+			spi_flash_dual_flash(flash, &read_addr);
+#endif
 #ifdef CONFIG_SPI_FLASH_BAR
-		bank_sel = spi_flash_bank(flash, offset);
+		bank_sel = spi_flash_bank(flash, read_addr);
 		if (bank_sel < 0)
 			return ret;
 #endif
-		remain_len = (SPI_FLASH_16MB_BOUN * (bank_sel + 1)) - offset;
+		remain_len = ((SPI_FLASH_16MB_BOUN << flash->shift) *
+				(bank_sel + 1)) - offset;
 		if (len < remain_len)
 			read_len = len;
 		else
 			read_len = remain_len;
 
-		spi_flash_addr(offset, cmd);
+		spi_flash_addr(read_addr, cmd);
 
 		ret = spi_flash_read_common(flash, cmd, cmdsz, data, read_len);
 		if (ret < 0) {