X-Git-Url: https://git.kernelconcepts.de/?a=blobdiff_plain;f=drivers%2Fmtd%2Fspi%2Fspansion.c;h=9288672c84cfbfb1ba8b076a03b2c58e54d63ffe;hb=4e994c168f50b15da6ff91e8619757ffa90d93f4;hp=d6c1a5f9d3addeab46a449b1d4da1b13ef1de8a4;hpb=2271d3ddccfbd4a7640121669ff9b013b1fea361;p=karo-tx-uboot.git

diff --git a/drivers/mtd/spi/spansion.c b/drivers/mtd/spi/spansion.c
index d6c1a5f9d3..9288672c84 100644
--- a/drivers/mtd/spi/spansion.c
+++ b/drivers/mtd/spi/spansion.c
@@ -31,283 +31,84 @@
 
 #include "spi_flash_internal.h"
 
-/* S25FLxx-specific commands */
-#define CMD_S25FLXX_READ	0x03	/* Read Data Bytes */
-#define CMD_S25FLXX_FAST_READ	0x0b	/* Read Data Bytes at Higher Speed */
-#define CMD_S25FLXX_READID	0x90	/* Read Manufacture ID and Device ID */
-#define CMD_S25FLXX_WREN	0x06	/* Write Enable */
-#define CMD_S25FLXX_WRDI	0x04	/* Write Disable */
-#define CMD_S25FLXX_RDSR	0x05	/* Read Status Register */
-#define CMD_S25FLXX_WRSR	0x01	/* Write Status Register */
-#define CMD_S25FLXX_PP		0x02	/* Page Program */
-#define CMD_S25FLXX_SE		0xd8	/* Sector Erase */
-#define CMD_S25FLXX_BE		0xc7	/* Bulk Erase */
-#define CMD_S25FLXX_DP		0xb9	/* Deep Power-down */
-#define CMD_S25FLXX_RES		0xab	/* Release from DP, and Read Signature */
-
-#define SPSN_ID_S25FL008A	0x0213
-#define SPSN_ID_S25FL016A	0x0214
-#define SPSN_ID_S25FL032A	0x0215
-#define SPSN_ID_S25FL064A	0x0216
-#define SPSN_ID_S25FL128P	0x2018
-#define SPSN_EXT_ID_S25FL128P_256KB	0x0300
-#define SPSN_EXT_ID_S25FL128P_64KB	0x0301
-
-#define SPANSION_SR_WIP		(1 << 0)	/* Write-in-Progress */
-
 struct spansion_spi_flash_params {
 	u16 idcode1;
 	u16 idcode2;
-	u16 page_size;
 	u16 pages_per_sector;
 	u16 nr_sectors;
 	const char *name;
 };
 
-struct spansion_spi_flash {
-	struct spi_flash flash;
-	const struct spansion_spi_flash_params *params;
-};
-
-static inline struct spansion_spi_flash *to_spansion_spi_flash(struct spi_flash
-							     *flash)
-{
-	return container_of(flash, struct spansion_spi_flash, flash);
-}
-
 static const struct spansion_spi_flash_params spansion_spi_flash_table[] = {
 	{
-		.idcode1 = SPSN_ID_S25FL008A,
+		.idcode1 = 0x0213,
 		.idcode2 = 0,
-		.page_size = 256,
 		.pages_per_sector = 256,
 		.nr_sectors = 16,
 		.name = "S25FL008A",
 	},
 	{
-		.idcode1 = SPSN_ID_S25FL016A,
+		.idcode1 = 0x0214,
 		.idcode2 = 0,
-		.page_size = 256,
 		.pages_per_sector = 256,
 		.nr_sectors = 32,
 		.name = "S25FL016A",
 	},
 	{
-		.idcode1 = SPSN_ID_S25FL032A,
+		.idcode1 = 0x0215,
 		.idcode2 = 0,
-		.page_size = 256,
 		.pages_per_sector = 256,
 		.nr_sectors = 64,
 		.name = "S25FL032A",
 	},
 	{
-		.idcode1 = SPSN_ID_S25FL064A,
+		.idcode1 = 0x0216,
 		.idcode2 = 0,
-		.page_size = 256,
 		.pages_per_sector = 256,
 		.nr_sectors = 128,
 		.name = "S25FL064A",
 	},
 	{
-		.idcode1 = SPSN_ID_S25FL128P,
-		.idcode2 = SPSN_EXT_ID_S25FL128P_64KB,
-		.page_size = 256,
+		.idcode1 = 0x2018,
+		.idcode2 = 0x0301,
 		.pages_per_sector = 256,
 		.nr_sectors = 256,
 		.name = "S25FL128P_64K",
 	},
 	{
-		.idcode1 = SPSN_ID_S25FL128P,
-		.idcode2 = SPSN_EXT_ID_S25FL128P_256KB,
-		.page_size = 256,
+		.idcode1 = 0x2018,
+		.idcode2 = 0x0300,
 		.pages_per_sector = 1024,
 		.nr_sectors = 64,
 		.name = "S25FL128P_256K",
 	},
+	{
+		.idcode1 = 0x0215,
+		.idcode2 = 0x4d00,
+		.pages_per_sector = 256,
+		.nr_sectors = 64,
+		.name = "S25FL032P",
+	},
+	{
+		.idcode1 = 0x2018,
+		.idcode2 = 0x4d01,
+		.pages_per_sector = 256,
+		.nr_sectors = 256,
+		.name = "S25FL129P_64K",
+	},
+	{
+		.idcode1 = 0x0219,
+		.idcode2 = 0x4d01,
+		.pages_per_sector = 256,
+		.nr_sectors = 512,
+		.name = "S25FL256S",
+	},
 };
 
-static int spansion_wait_ready(struct spi_flash *flash, unsigned long timeout)
-{
-	struct spi_slave *spi = flash->spi;
-	unsigned long timebase;
-	int ret;
-	u8 status;
-
-	timebase = get_timer(0);
-	do {
-		ret = spi_flash_cmd(spi, CMD_S25FLXX_RDSR, &status, sizeof(status));
-		if (ret)
-			return -1;
-
-		if ((status & SPANSION_SR_WIP) == 0)
-			break;
-
-	} while (get_timer(timebase) < timeout);
-
-
-	if ((status & SPANSION_SR_WIP) == 0)
-		return 0;
-
-	/* Timed out */
-	return -1;
-}
-
-static int spansion_read_fast(struct spi_flash *flash,
-			     u32 offset, size_t len, void *buf)
-{
-	struct spansion_spi_flash *spsn = to_spansion_spi_flash(flash);
-	unsigned long page_addr;
-	unsigned long page_size;
-	u8 cmd[5];
-
-	page_size = spsn->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;
-
-	debug
-		("READ: 0x%x => cmd = { 0x%02x 0x%02x%02x%02x%02x } len = 0x%x\n",
-		 offset, cmd[0], cmd[1], cmd[2], cmd[3], cmd[4], len);
-
-	return spi_flash_read_common(flash, cmd, sizeof(cmd), buf, len);
-}
-
-static int spansion_write(struct spi_flash *flash,
-			 u32 offset, size_t len, const void *buf)
-{
-	struct spansion_spi_flash *spsn = to_spansion_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 = spsn->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_S25FLXX_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_S25FLXX_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: SPANSION Page Program failed\n");
-			break;
-		}
-
-		ret = spansion_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT);
-		if (ret < 0) {
-			debug("SF: SPANSION page programming timed out\n");
-			break;
-		}
-
-		page_addr++;
-		byte_addr = 0;
-	}
-
-	debug("SF: SPANSION: Successfully programmed %u bytes @ 0x%x\n",
-	      len, offset);
-
-	spi_release_bus(flash->spi);
-	return ret;
-}
-
-int spansion_erase(struct spi_flash *flash, u32 offset, size_t len)
-{
-	struct spansion_spi_flash *spsn = to_spansion_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 = spsn->params->page_size * spsn->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_S25FLXX_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 / sector_size) + actual;
-
-		ret = spi_flash_cmd(flash->spi, CMD_S25FLXX_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: SPANSION page erase failed\n");
-			break;
-		}
-
-		/* Up to 2 seconds */
-		ret = spansion_wait_ready(flash, SPI_FLASH_PAGE_ERASE_TIMEOUT);
-		if (ret < 0) {
-			debug("SF: SPANSION page erase timed out\n");
-			break;
-		}
-	}
-
-	debug("SF: SPANSION: Successfully erased %u bytes @ 0x%x\n",
-	      len * sector_size, offset);
-
-	spi_release_bus(flash->spi);
-	return ret;
-}
-
 struct spi_flash *spi_flash_probe_spansion(struct spi_slave *spi, u8 *idcode)
 {
 	const struct spansion_spi_flash_params *params;
-	struct spansion_spi_flash *spsn;
+	struct spi_flash *flash;
 	unsigned int i;
 	unsigned short jedec, ext_jedec;
 
@@ -327,25 +128,21 @@ struct spi_flash *spi_flash_probe_spansion(struct spi_slave *spi, u8 *idcode)
 		return NULL;
 	}
 
-	spsn = malloc(sizeof(struct spansion_spi_flash));
-	if (!spsn) {
+	flash = malloc(sizeof(*flash));
+	if (!flash) {
 		debug("SF: Failed to allocate memory\n");
 		return NULL;
 	}
 
-	spsn->params = params;
-	spsn->flash.spi = spi;
-	spsn->flash.name = params->name;
-
-	spsn->flash.write = spansion_write;
-	spsn->flash.erase = spansion_erase;
-	spsn->flash.read = spansion_read_fast;
-	spsn->flash.size = params->page_size * params->pages_per_sector
-	    * params->nr_sectors;
+	flash->spi = spi;
+	flash->name = params->name;
 
-	printf("SF: Detected %s with page size %u, total ",
-	       params->name, params->page_size);
-	print_size(spsn->flash.size, "\n");
+	flash->write = spi_flash_cmd_write_multi;
+	flash->erase = spi_flash_cmd_erase;
+	flash->read = spi_flash_cmd_read_fast;
+	flash->page_size = 256;
+	flash->sector_size = 256 * params->pages_per_sector;
+	flash->size = flash->sector_size * params->nr_sectors;
 
-	return &spsn->flash;
+	return flash;
 }