X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=drivers%2Fmtd%2Fspi%2Feon.c;h=25cfc1252c406e1a73c5e82a1885eefc038c2d1e;hb=af1679bc30b11b90f9f6650d211b3fe350f4044f;hp=02c3bb93047850ba2269bcf3f5d7d048cc4942db;hpb=cdc51c294ad33879c4e57edf4c9d2155381b1d59;p=u-boot

diff --git a/drivers/mtd/spi/eon.c b/drivers/mtd/spi/eon.c
index 02c3bb9304..25cfc1252c 100644
--- a/drivers/mtd/spi/eon.c
+++ b/drivers/mtd/spi/eon.c
@@ -10,235 +10,29 @@
 
 #include "spi_flash_internal.h"
 
-/* EN25Q128-specific commands */
-#define CMD_EN25Q128_WREN	0x06    /* Write Enable */
-#define CMD_EN25Q128_WRDI	0x04    /* Write Disable */
-#define CMD_EN25Q128_RDSR	0x05    /* Read Status Register */
-#define CMD_EN25Q128_WRSR	0x01    /* Write Status Register */
-#define CMD_EN25Q128_READ	0x03    /* Read Data Bytes */
-#define CMD_EN25Q128_FAST_READ	0x0b    /* Read Data Bytes at Higher Speed */
-#define CMD_EN25Q128_PP		0x02    /* Page Program */
-#define CMD_EN25Q128_SE		0x20    /* Sector Erase */
-#define CMD_EN25Q128_BE		0xd8    /* Block Erase */
-#define CMD_EN25Q128_DP		0xb9    /* Deep Power-down */
-#define CMD_EN25Q128_RES	0xab    /* Release from DP, and Read Signature */
-
-#define EON_ID_EN25Q128		0x18
-
-#define EON_SR_WIP		(1 << 0)	/* Write-in-Progress */
-
 struct eon_spi_flash_params {
 	u8 idcode1;
-	u16 page_size;
-	u16 pages_per_sector;
-	u16 sectors_per_block;
 	u16 nr_sectors;
 	const char *name;
 };
 
-/* spi_flash needs to be first so upper layers can free() it */
-struct eon_spi_flash {
-	struct spi_flash flash;
-	const struct eon_spi_flash_params *params;
-};
-
-static inline struct eon_spi_flash *to_eon_spi_flash(struct spi_flash *flash)
-{
-	return container_of(flash, struct eon_spi_flash, flash);
-}
-
 static const struct eon_spi_flash_params eon_spi_flash_table[] = {
 	{
-		.idcode1 = EON_ID_EN25Q128,
-		.page_size = 256,
-		.pages_per_sector = 16,
-		.sectors_per_block = 16,
+		.idcode1 = 0x16,
+		.nr_sectors = 1024,
+		.name = "EN25Q32B",
+	},
+	{
+		.idcode1 = 0x18,
 		.nr_sectors = 4096,
 		.name = "EN25Q128",
 	},
 };
 
-static int eon_wait_ready(struct spi_flash *flash, unsigned long timeout)
-{
-	struct spi_slave *spi = flash->spi;
-	unsigned long timebase;
-	int ret;
-	u8 cmd = CMD_EN25Q128_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 & EON_SR_WIP) == 0)
-			break;
-
-	} while (get_timer(timebase) < timeout);
-
-	spi_xfer(spi, 0, NULL, NULL, SPI_XFER_END);
-
-	if ((status & EON_SR_WIP) == 0)
-		return 0;
-
-	/* Timed out */
-	return -1;
-}
-
-static int eon_read_fast(struct spi_flash *flash,
-			 u32 offset, size_t len, void *buf)
-{
-	struct eon_spi_flash *eon = to_eon_spi_flash(flash);
-	unsigned long page_addr;
-	unsigned long page_size;
-	u8 cmd[5];
-
-	page_size = eon->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 eon_write(struct spi_flash *flash,
-		     u32 offset, size_t len, const void *buf)
-{
-	struct eon_spi_flash *eon = to_eon_spi_flash(flash);
-	unsigned long page_addr;
-	unsigned long byte_addr;
-	unsigned long page_size;
-	size_t chunk_len;
-	size_t actual;
-	int ret;
-	u8 cmd[4];
-
-	page_size = eon->params->page_size;
-	page_addr = offset / page_size;
-	byte_addr = offset % page_size;
-
-	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 += chunk_len) {
-		chunk_len = min(len - actual, page_size - byte_addr);
-
-		cmd[0] = CMD_EN25Q128_PP;
-		cmd[1] = page_addr >> 8;
-		cmd[2] = page_addr;
-		cmd[3] = byte_addr;
-
-		debug
-		    ("PP: 0x%p => cmd = { 0x%02x 0x%02x%02x%02x } chunk_len = %d\n",
-		     buf + actual, cmd[0], cmd[1], cmd[2], cmd[3], chunk_len);
-
-		ret = spi_flash_cmd(flash->spi, CMD_EN25Q128_WREN, NULL, 0);
-		if (ret < 0) {
-			debug("SF: Enabling Write failed\n");
-			break;
-		}
-
-		ret = spi_flash_cmd_write(flash->spi, cmd, 4,
-					  buf + actual, chunk_len);
-		if (ret < 0) {
-			debug("SF: EON Page Program failed\n");
-			break;
-		}
-
-		ret = eon_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT);
-		if (ret < 0) {
-			debug("SF: EON page programming timed out\n");
-			break;
-		}
-
-		page_addr++;
-		byte_addr = 0;
-	}
-
-	debug("SF: EON: Successfully programmed %u bytes @ 0x%x\n",
-	      len, offset);
-
-	spi_release_bus(flash->spi);
-	return ret;
-}
-
-int eon_erase(struct spi_flash *flash, u32 offset, size_t len)
-{
-	/* block erase */
-	struct eon_spi_flash *eon = to_eon_spi_flash(flash);
-	unsigned long block_size;
-	size_t actual;
-	int ret;
-	u8 cmd[4];
-
-
-	block_size = eon->params->page_size * eon->params->pages_per_sector
-	       * eon->params->sectors_per_block;
-
-	if (offset % block_size || len % block_size) {
-		debug("SF: Erase offset/length not multiple of block size\n");
-		return -1;
-	}
-
-	len /= block_size;
-	cmd[0] = CMD_EN25Q128_BE;
-	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 / block_size) + actual;
-		ret = spi_flash_cmd(flash->spi, CMD_EN25Q128_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: EON page erase failed\n");
-			break;
-		}
-
-		ret = eon_wait_ready(flash, SPI_FLASH_PAGE_ERASE_TIMEOUT);
-		if (ret < 0) {
-			debug("SF: EON page erase timed out\n");
-			break;
-		}
-	}
-
-	debug("SF: EON: Successfully erased %u bytes @ 0x%x\n",
-	      len * block_size, offset);
-
-	spi_release_bus(flash->spi);
-	return ret;
-}
-
 struct spi_flash *spi_flash_probe_eon(struct spi_slave *spi, u8 *idcode)
 {
 	const struct eon_spi_flash_params *params;
-	struct eon_spi_flash *eon;
+	struct spi_flash *flash;
 	unsigned int i;
 
 	for (i = 0; i < ARRAY_SIZE(eon_spi_flash_table); ++i) {
@@ -252,24 +46,15 @@ struct spi_flash *spi_flash_probe_eon(struct spi_slave *spi, u8 *idcode)
 		return NULL;
 	}
 
-	eon = malloc(sizeof(*eon));
-	if (!eon) {
+	flash = spi_flash_alloc_base(spi, params->name);
+	if (!flash) {
 		debug("SF: Failed to allocate memory\n");
 		return NULL;
 	}
 
-	eon->params = params;
-	eon->flash.spi = spi;
-	eon->flash.name = params->name;
-
-	eon->flash.write = eon_write;
-	eon->flash.erase = eon_erase;
-	eon->flash.read = eon_read_fast;
-	eon->flash.size = params->page_size * params->pages_per_sector
-	    * params->nr_sectors;
-
-	debug("SF: Detected %s with page size %u, total %u bytes\n",
-	      params->name, params->page_size, eon->flash.size);
+	flash->page_size = 256;
+	flash->sector_size = 256 * 16 * 16;
+	flash->size = 256 * 16 * params->nr_sectors;
 
-	return &eon->flash;
+	return flash;
 }