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path: root/drivers/mtd/devices/sst25l.c
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Diffstat (limited to 'drivers/mtd/devices/sst25l.c')
-rw-r--r--drivers/mtd/devices/sst25l.c68
1 files changed, 33 insertions, 35 deletions
diff --git a/drivers/mtd/devices/sst25l.c b/drivers/mtd/devices/sst25l.c
index fe17054ee2fe..ab5d8cd02a15 100644
--- a/drivers/mtd/devices/sst25l.c
+++ b/drivers/mtd/devices/sst25l.c
@@ -73,15 +73,25 @@ static struct flash_info __initdata sst25l_flash_info[] = {
static int sst25l_status(struct sst25l_flash *flash, int *status)
{
- unsigned char command, response;
+ struct spi_message m;
+ struct spi_transfer t;
+ unsigned char cmd_resp[2];
int err;
- command = SST25L_CMD_RDSR;
- err = spi_write_then_read(flash->spi, &command, 1, &response, 1);
+ spi_message_init(&m);
+ memset(&t, 0, sizeof(struct spi_transfer));
+
+ cmd_resp[0] = SST25L_CMD_RDSR;
+ cmd_resp[1] = 0xff;
+ t.tx_buf = cmd_resp;
+ t.rx_buf = cmd_resp;
+ t.len = sizeof(cmd_resp);
+ spi_message_add_tail(&t, &m);
+ err = spi_sync(flash->spi, &m);
if (err < 0)
return err;
- *status = response;
+ *status = cmd_resp[1];
return 0;
}
@@ -328,33 +338,32 @@ out:
static struct flash_info *__init sst25l_match_device(struct spi_device *spi)
{
struct flash_info *flash_info = NULL;
- unsigned char command[4], response;
+ struct spi_message m;
+ struct spi_transfer t;
+ unsigned char cmd_resp[6];
int i, err;
uint16_t id;
- command[0] = SST25L_CMD_READ_ID;
- command[1] = 0;
- command[2] = 0;
- command[3] = 0;
- err = spi_write_then_read(spi, command, sizeof(command), &response, 1);
+ spi_message_init(&m);
+ memset(&t, 0, sizeof(struct spi_transfer));
+
+ cmd_resp[0] = SST25L_CMD_READ_ID;
+ cmd_resp[1] = 0;
+ cmd_resp[2] = 0;
+ cmd_resp[3] = 0;
+ cmd_resp[4] = 0xff;
+ cmd_resp[5] = 0xff;
+ t.tx_buf = cmd_resp;
+ t.rx_buf = cmd_resp;
+ t.len = sizeof(cmd_resp);
+ spi_message_add_tail(&t, &m);
+ err = spi_sync(spi, &m);
if (err < 0) {
- dev_err(&spi->dev, "error reading device id msb\n");
+ dev_err(&spi->dev, "error reading device id\n");
return NULL;
}
- id = response << 8;
-
- command[0] = SST25L_CMD_READ_ID;
- command[1] = 0;
- command[2] = 0;
- command[3] = 1;
- err = spi_write_then_read(spi, command, sizeof(command), &response, 1);
- if (err < 0) {
- dev_err(&spi->dev, "error reading device id lsb\n");
- return NULL;
- }
-
- id |= response;
+ id = (cmd_resp[4] << 8) | cmd_resp[5];
for (i = 0; i < ARRAY_SIZE(sst25l_flash_info); i++)
if (sst25l_flash_info[i].device_id == id)
@@ -411,17 +420,6 @@ static int __init sst25l_probe(struct spi_device *spi)
flash->mtd.erasesize, flash->mtd.erasesize / 1024,
flash->mtd.numeraseregions);
- if (flash->mtd.numeraseregions)
- for (i = 0; i < flash->mtd.numeraseregions; i++)
- DEBUG(MTD_DEBUG_LEVEL2,
- "mtd.eraseregions[%d] = { .offset = 0x%llx, "
- ".erasesize = 0x%.8x (%uKiB), "
- ".numblocks = %d }\n",
- i, (long long)flash->mtd.eraseregions[i].offset,
- flash->mtd.eraseregions[i].erasesize,
- flash->mtd.eraseregions[i].erasesize / 1024,
- flash->mtd.eraseregions[i].numblocks);
-
if (mtd_has_partitions()) {
struct mtd_partition *parts = NULL;
int nr_parts = 0;