X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=drivers%2Fmtd%2Fspi%2Fstmicro.c;h=a1980b1ed78a6da72f6bd149e778b677c9146190;hb=c5910874ba418e7dc35661b98a8931cb86358f95;hp=31340279cb872f98e0fdafe84f087ff0dc0f7786;hpb=b376bbb49f42ed8ea566ca1b3e440240204008ca;p=u-boot

diff --git a/drivers/mtd/spi/stmicro.c b/drivers/mtd/spi/stmicro.c
index 31340279cb..a1980b1ed7 100644
--- a/drivers/mtd/spi/stmicro.c
+++ b/drivers/mtd/spi/stmicro.c
@@ -55,8 +55,6 @@
 #define STM_ID_M25P80		0x14
 #define STM_ID_M25P128		0x18
 
-#define STMICRO_SR_WIP		(1 << 0)	/* Write-in-Progress */
-
 struct stmicro_spi_flash_params {
 	u8 idcode1;
 	u16 page_size;
@@ -136,60 +134,6 @@ static const struct stmicro_spi_flash_params stmicro_spi_flash_table[] = {
 	},
 };
 
-static int stmicro_wait_ready(struct spi_flash *flash, unsigned long timeout)
-{
-	struct spi_slave *spi = flash->spi;
-	unsigned long timebase;
-	int ret;
-	u8 cmd = CMD_M25PXX_RDSR;
-	u8 status;
-
-	ret = spi_xfer(spi, 8, &cmd, NULL, SPI_XFER_BEGIN);
-	if (ret) {
-		debug("SF: Failed to send command %02x: %d\n", cmd, ret);
-		return ret;
-	}
-
-	timebase = get_timer(0);
-	do {
-		ret = spi_xfer(spi, 8, NULL, &status, 0);
-		if (ret)
-			return -1;
-
-		if ((status & STMICRO_SR_WIP) == 0)
-			break;
-
-	} while (get_timer(timebase) < timeout);
-
-	spi_xfer(spi, 0, NULL, NULL, SPI_XFER_END);
-
-	if ((status & STMICRO_SR_WIP) == 0)
-		return 0;
-
-	/* Timed out */
-	return -1;
-}
-
-static int stmicro_read_fast(struct spi_flash *flash,
-			     u32 offset, size_t len, void *buf)
-{
-	struct stmicro_spi_flash *stm = to_stmicro_spi_flash(flash);
-	unsigned long page_addr;
-	unsigned long page_size;
-	u8 cmd[5];
-
-	page_size = stm->params->page_size;
-	page_addr = offset / page_size;
-
-	cmd[0] = CMD_READ_ARRAY_FAST;
-	cmd[1] = page_addr >> 8;
-	cmd[2] = page_addr;
-	cmd[3] = offset % page_size;
-	cmd[4] = 0x00;
-
-	return spi_flash_read_common(flash, cmd, sizeof(cmd), buf, len);
-}
-
 static int stmicro_write(struct spi_flash *flash,
 			 u32 offset, size_t len, const void *buf)
 {
@@ -238,11 +182,9 @@ static int stmicro_write(struct spi_flash *flash,
 			break;
 		}
 
-		ret = stmicro_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT);
-		if (ret < 0) {
-			debug("SF: STMicro page programming timed out\n");
+		ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT);
+		if (ret)
 			break;
-		}
 
 		page_addr++;
 		byte_addr = 0;
@@ -257,65 +199,7 @@ static int stmicro_write(struct spi_flash *flash,
 
 int stmicro_erase(struct spi_flash *flash, u32 offset, size_t len)
 {
-	struct stmicro_spi_flash *stm = to_stmicro_spi_flash(flash);
-	unsigned long sector_size;
-	size_t actual;
-	int ret;
-	u8 cmd[4];
-
-	/*
-	 * This function currently uses sector erase only.
-	 * probably speed things up by using bulk erase
-	 * when possible.
-	 */
-
-	sector_size = stm->params->page_size * stm->params->pages_per_sector;
-
-	if (offset % sector_size || len % sector_size) {
-		debug("SF: Erase offset/length not multiple of sector size\n");
-		return -1;
-	}
-
-	len /= sector_size;
-	cmd[0] = CMD_M25PXX_SE;
-	cmd[2] = 0x00;
-	cmd[3] = 0x00;
-
-	ret = spi_claim_bus(flash->spi);
-	if (ret) {
-		debug("SF: Unable to claim SPI bus\n");
-		return ret;
-	}
-
-	ret = 0;
-	for (actual = 0; actual < len; actual++) {
-		cmd[1] = offset >> 16;
-		offset += sector_size;
-
-		ret = spi_flash_cmd(flash->spi, CMD_M25PXX_WREN, NULL, 0);
-		if (ret < 0) {
-			debug("SF: Enabling Write failed\n");
-			break;
-		}
-
-		ret = spi_flash_cmd_write(flash->spi, cmd, 4, NULL, 0);
-		if (ret < 0) {
-			debug("SF: STMicro page erase failed\n");
-			break;
-		}
-
-		ret = stmicro_wait_ready(flash, SPI_FLASH_PAGE_ERASE_TIMEOUT);
-		if (ret < 0) {
-			debug("SF: STMicro page erase timed out\n");
-			break;
-		}
-	}
-
-	debug("SF: STMicro: Successfully erased %u bytes @ 0x%x\n",
-	      len * sector_size, offset);
-
-	spi_release_bus(flash->spi);
-	return ret;
+	return spi_flash_cmd_erase(flash, CMD_M25PXX_SE, offset, len);
 }
 
 struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 * idcode)
@@ -361,13 +245,9 @@ struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 * idcode)
 
 	stm->flash.write = stmicro_write;
 	stm->flash.erase = stmicro_erase;
-	stm->flash.read = stmicro_read_fast;
-	stm->flash.size = params->page_size * params->pages_per_sector
-	    * params->nr_sectors;
-
-	printf("SF: Detected %s with page size %u, total ",
-	       params->name, params->page_size);
-	print_size(stm->flash.size, "\n");
+	stm->flash.read = spi_flash_cmd_read_fast;
+	stm->flash.sector_size = params->page_size * params->pages_per_sector;
+	stm->flash.size = stm->flash.sector_size * params->nr_sectors;
 
 	return &stm->flash;
 }