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Diffstat (limited to 'drivers/mtd/devices/m25p80.c')
-rw-r--r--drivers/mtd/devices/m25p80.c109
1 files changed, 61 insertions, 48 deletions
diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index 3fb981d4bb5..35180e475c4 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -27,6 +27,7 @@
#include <linux/sched.h>
#include <linux/mod_devicetable.h>
+#include <linux/mtd/cfi.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
@@ -55,6 +56,9 @@
#define OPCODE_EN4B 0xb7 /* Enter 4-byte mode */
#define OPCODE_EX4B 0xe9 /* Exit 4-byte mode */
+/* Used for Spansion flashes only. */
+#define OPCODE_BRWR 0x17 /* Bank register write */
+
/* Status Register bits. */
#define SR_WIP 1 /* Write in progress */
#define SR_WEL 2 /* Write enable latch */
@@ -76,6 +80,8 @@
#define FAST_READ_DUMMY_BYTE 0
#endif
+#define JEDEC_MFR(_jedec_id) ((_jedec_id) >> 16)
+
/****************************************************************************/
struct m25p {
@@ -158,11 +164,18 @@ static inline int write_disable(struct m25p *flash)
/*
* Enable/disable 4-byte addressing mode.
*/
-static inline int set_4byte(struct m25p *flash, int enable)
+static inline int set_4byte(struct m25p *flash, u32 jedec_id, int enable)
{
- u8 code = enable ? OPCODE_EN4B : OPCODE_EX4B;
-
- return spi_write_then_read(flash->spi, &code, 1, NULL, 0);
+ switch (JEDEC_MFR(jedec_id)) {
+ case CFI_MFR_MACRONIX:
+ flash->command[0] = enable ? OPCODE_EN4B : OPCODE_EX4B;
+ return spi_write(flash->spi, flash->command, 1);
+ default:
+ /* Spansion style */
+ flash->command[0] = OPCODE_BRWR;
+ flash->command[1] = enable << 7;
+ return spi_write(flash->spi, flash->command, 2);
+ }
}
/*
@@ -668,6 +681,7 @@ static const struct spi_device_id m25p_ids[] = {
/* Macronix */
{ "mx25l4005a", INFO(0xc22013, 0, 64 * 1024, 8, SECT_4K) },
{ "mx25l8005", INFO(0xc22014, 0, 64 * 1024, 16, 0) },
+ { "mx25l1606e", INFO(0xc22015, 0, 64 * 1024, 32, SECT_4K) },
{ "mx25l3205d", INFO(0xc22016, 0, 64 * 1024, 64, 0) },
{ "mx25l6405d", INFO(0xc22017, 0, 64 * 1024, 128, 0) },
{ "mx25l12805d", INFO(0xc22018, 0, 64 * 1024, 256, 0) },
@@ -684,6 +698,10 @@ static const struct spi_device_id m25p_ids[] = {
{ "s25sl032a", INFO(0x010215, 0, 64 * 1024, 64, 0) },
{ "s25sl032p", INFO(0x010215, 0x4d00, 64 * 1024, 64, SECT_4K) },
{ "s25sl064a", INFO(0x010216, 0, 64 * 1024, 128, 0) },
+ { "s25fl256s0", INFO(0x010219, 0x4d00, 256 * 1024, 128, 0) },
+ { "s25fl256s1", INFO(0x010219, 0x4d01, 64 * 1024, 512, 0) },
+ { "s25fl512s", INFO(0x010220, 0x4d00, 256 * 1024, 256, 0) },
+ { "s70fl01gs", INFO(0x010221, 0x4d00, 256 * 1024, 256, 0) },
{ "s25sl12800", INFO(0x012018, 0x0300, 256 * 1024, 64, 0) },
{ "s25sl12801", INFO(0x012018, 0x0301, 64 * 1024, 256, 0) },
{ "s25fl129p0", INFO(0x012018, 0x4d00, 256 * 1024, 64, 0) },
@@ -729,7 +747,10 @@ static const struct spi_device_id m25p_ids[] = {
{ "m25pe80", INFO(0x208014, 0, 64 * 1024, 16, 0) },
{ "m25pe16", INFO(0x208015, 0, 64 * 1024, 32, SECT_4K) },
- { "m25px64", INFO(0x207117, 0, 64 * 1024, 128, 0) },
+ { "m25px32", INFO(0x207116, 0, 64 * 1024, 64, SECT_4K) },
+ { "m25px32-s0", INFO(0x207316, 0, 64 * 1024, 64, SECT_4K) },
+ { "m25px32-s1", INFO(0x206316, 0, 64 * 1024, 64, SECT_4K) },
+ { "m25px64", INFO(0x207117, 0, 64 * 1024, 128, 0) },
/* Winbond -- w25x "blocks" are 64K, "sectors" are 4KiB */
{ "w25x10", INFO(0xef3011, 0, 64 * 1024, 2, SECT_4K) },
@@ -804,6 +825,8 @@ static int __devinit m25p_probe(struct spi_device *spi)
struct m25p *flash;
struct flash_info *info;
unsigned i;
+ struct mtd_partition *parts = NULL;
+ int nr_parts = 0;
/* Platform data helps sort out which chip type we have, as
* well as how this board partitions it. If we don't have
@@ -868,9 +891,9 @@ static int __devinit m25p_probe(struct spi_device *spi)
* up with the software protection bits set
*/
- if (info->jedec_id >> 16 == 0x1f ||
- info->jedec_id >> 16 == 0x89 ||
- info->jedec_id >> 16 == 0xbf) {
+ if (JEDEC_MFR(info->jedec_id) == CFI_MFR_ATMEL ||
+ JEDEC_MFR(info->jedec_id) == CFI_MFR_INTEL ||
+ JEDEC_MFR(info->jedec_id) == CFI_MFR_SST) {
write_enable(flash);
write_sr(flash, 0);
}
@@ -888,7 +911,7 @@ static int __devinit m25p_probe(struct spi_device *spi)
flash->mtd.read = m25p80_read;
/* sst flash chips use AAI word program */
- if (info->jedec_id >> 16 == 0xbf)
+ if (JEDEC_MFR(info->jedec_id) == CFI_MFR_SST)
flash->mtd.write = sst_write;
else
flash->mtd.write = m25p80_write;
@@ -914,7 +937,7 @@ static int __devinit m25p_probe(struct spi_device *spi)
/* enable 4-byte addressing if the device exceeds 16MiB */
if (flash->mtd.size > 0x1000000) {
flash->addr_width = 4;
- set_4byte(flash, 1);
+ set_4byte(flash, info->jedec_id, 1);
} else
flash->addr_width = 3;
}
@@ -945,48 +968,41 @@ static int __devinit m25p_probe(struct spi_device *spi)
/* partitions should match sector boundaries; and it may be good to
* use readonly partitions for writeprotected sectors (BP2..BP0).
*/
- if (mtd_has_partitions()) {
- struct mtd_partition *parts = NULL;
- int nr_parts = 0;
-
- if (mtd_has_cmdlinepart()) {
- static const char *part_probes[]
- = { "cmdlinepart", NULL, };
+ if (mtd_has_cmdlinepart()) {
+ static const char *part_probes[]
+ = { "cmdlinepart", NULL, };
- nr_parts = parse_mtd_partitions(&flash->mtd,
- part_probes, &parts, 0);
- }
+ nr_parts = parse_mtd_partitions(&flash->mtd,
+ part_probes, &parts, 0);
+ }
- if (nr_parts <= 0 && data && data->parts) {
- parts = data->parts;
- nr_parts = data->nr_parts;
- }
+ if (nr_parts <= 0 && data && data->parts) {
+ parts = data->parts;
+ nr_parts = data->nr_parts;
+ }
#ifdef CONFIG_MTD_OF_PARTS
- if (nr_parts <= 0 && spi->dev.of_node) {
- nr_parts = of_mtd_parse_partitions(&spi->dev,
- spi->dev.of_node, &parts);
- }
+ if (nr_parts <= 0 && spi->dev.of_node) {
+ nr_parts = of_mtd_parse_partitions(&spi->dev,
+ spi->dev.of_node, &parts);
+ }
#endif
- if (nr_parts > 0) {
- for (i = 0; i < nr_parts; i++) {
- DEBUG(MTD_DEBUG_LEVEL2, "partitions[%d] = "
- "{.name = %s, .offset = 0x%llx, "
- ".size = 0x%llx (%lldKiB) }\n",
- i, parts[i].name,
- (long long)parts[i].offset,
- (long long)parts[i].size,
- (long long)(parts[i].size >> 10));
- }
- flash->partitioned = 1;
- return add_mtd_partitions(&flash->mtd, parts, nr_parts);
+ if (nr_parts > 0) {
+ for (i = 0; i < nr_parts; i++) {
+ DEBUG(MTD_DEBUG_LEVEL2, "partitions[%d] = "
+ "{.name = %s, .offset = 0x%llx, "
+ ".size = 0x%llx (%lldKiB) }\n",
+ i, parts[i].name,
+ (long long)parts[i].offset,
+ (long long)parts[i].size,
+ (long long)(parts[i].size >> 10));
}
- } else if (data && data->nr_parts)
- dev_warn(&spi->dev, "ignoring %d default partitions on %s\n",
- data->nr_parts, data->name);
+ flash->partitioned = 1;
+ }
- return add_mtd_device(&flash->mtd) == 1 ? -ENODEV : 0;
+ return mtd_device_register(&flash->mtd, parts, nr_parts) == 1 ?
+ -ENODEV : 0;
}
@@ -996,10 +1012,7 @@ static int __devexit m25p_remove(struct spi_device *spi)
int status;
/* Clean up MTD stuff. */
- if (mtd_has_partitions() && flash->partitioned)
- status = del_mtd_partitions(&flash->mtd);
- else
- status = del_mtd_device(&flash->mtd);
+ status = mtd_device_unregister(&flash->mtd);
if (status == 0) {
kfree(flash->command);
kfree(flash);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-29 09:20:23 +0000