Tested on real hardware, works fine.
Tested-by: Jagannadha Sutradharudu Teki jagannadh.teki@gmail.com
Thanks, Jagan.
On Wed, Dec 19, 2012 at 9:57 PM, Jagannadha Sutradharudu Teki jagannadh.teki@gmail.com wrote:
This patch provides support to read a flash status register.
Status register contains a control bits used to verify the progress of flash program and erase operations.
User need to get the data through spi_flash_cmd_read_status() based on their usage.
Signed-off-by: Jagannadha Sutradharudu Teki jagannadh.teki@gmail.com
Changes in v2:none
drivers/mtd/spi/spi_flash.c | 15 +++++++++++++++ drivers/mtd/spi/spi_flash_internal.h | 3 +++ 2 files changed, 18 insertions(+), 0 deletions(-)
diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c index 9e8939c..bf5ec4a 100644 --- a/drivers/mtd/spi/spi_flash.c +++ b/drivers/mtd/spi/spi_flash.c @@ -264,6 +264,21 @@ int spi_flash_cmd_write_status(struct spi_flash *flash, u8 sr) return 0; }
+int spi_flash_cmd_read_status(struct spi_flash *flash, void *data) +{
u8 cmd;int ret;cmd = CMD_READ_STATUS;ret = spi_flash_read_common(flash, &cmd, sizeof(cmd), (void *)data, 1);if (ret < 0) {debug("SF: fail to read status register\n");return ret;}return 0;+}
/*
- The following table holds all device probe functions
diff --git a/drivers/mtd/spi/spi_flash_internal.h b/drivers/mtd/spi/spi_flash_internal.h index 141cfa8..8232595 100644 --- a/drivers/mtd/spi/spi_flash_internal.h +++ b/drivers/mtd/spi/spi_flash_internal.h @@ -77,6 +77,9 @@ static inline int spi_flash_cmd_write_disable(struct spi_flash *flash) /* Program the status register. */ int spi_flash_cmd_write_status(struct spi_flash *flash, u8 sr);
+/* Read the status register */ +int spi_flash_cmd_read_status(struct spi_flash *flash, void *data);
/*
- Same as spi_flash_cmd_read() except it also claims/releases the SPI
- bus. Used as common part of the ->read() operation.
-- 1.7.0.4