diff options
| author | Simon Glass <sjg@chromium.org> | 2018-11-06 15:21:41 -0700 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2018-11-20 19:14:22 -0700 |
| commit | a58986ca8b53d8c7a441397082f84edc7f47d19f (patch) | |
| tree | c9ec3c59244371d8ad9992a2ba332a7b50d33950 /drivers/mtd/spi/spi_flash.c | |
| parent | f9d49f92f8cdf04a47704519a63368259595c3a0 (diff) | |
sf: Add a method to obtain the block-protect setting
It is useful to obtain the block-protect setting of the SPI flash, so we
know whether it is fully open or (perhaps partially) write-protected. Add
a method for this. Update the sandbox driver to process this operation and
add a test.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers/mtd/spi/spi_flash.c')
| -rw-r--r-- | drivers/mtd/spi/spi_flash.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c index a87bacd4ac7..0c2392f28a4 100644 --- a/drivers/mtd/spi/spi_flash.c +++ b/drivers/mtd/spi/spi_flash.c @@ -110,6 +110,18 @@ static int write_cr(struct spi_flash *flash, u8 wc) } #endif +int spi_flash_cmd_get_sw_write_prot(struct spi_flash *flash) +{ + u8 status; + int ret; + + ret = read_sr(flash, &status); + if (ret) + return ret; + + return (status >> 2) & 7; +} + #ifdef CONFIG_SPI_FLASH_BAR /* * This "clean_bar" is necessary in a situation when one was accessing |