@@ -29,15 +29,6 @@ int spi_flash_erase_dm(struct udevice *dev, u32 offset, size_t len)
return log_ret(sf_get_ops(dev)->erase(dev, offset, len));
}
-int spl_flash_get_sw_write_prot(struct udevice *dev)
-{
- struct dm_spi_flash_ops *ops = sf_get_ops(dev);
-
- if (!ops->get_sw_write_prot)
- return -ENOSYS;
- return log_ret(ops->get_sw_write_prot(dev));
-}
-
/*
* TODO(sjg@chromium.org): This is an old-style function. We should remove
* it when all SPI flash drivers use dm
@@ -74,10 +74,6 @@ extern const struct flash_info spi_nor_ids[];
#define JEDEC_MFR(info) ((info)->id[0])
#define JEDEC_ID(info) (((info)->id[1]) << 8 | ((info)->id[2]))
-/* Get software write-protect value (BP bits) */
-int spi_flash_cmd_get_sw_write_prot(struct spi_flash *flash);
-
-
#if CONFIG_IS_ENABLED(SPI_FLASH_MTD)
int spi_flash_mtd_register(struct spi_flash *flash);
void spi_flash_mtd_unregister(void);
@@ -129,13 +129,6 @@ static int spi_flash_std_erase(struct udevice *dev, u32 offset, size_t len)
return mtd->_erase(mtd, &instr);
}
-static int spi_flash_std_get_sw_write_prot(struct udevice *dev)
-{
- struct spi_flash *flash = dev_get_uclass_priv(dev);
-
- return spi_flash_cmd_get_sw_write_prot(flash);
-}
-
int spi_flash_std_probe(struct udevice *dev)
{
struct spi_slave *slave = dev_get_parent_priv(dev);
@@ -159,7 +152,6 @@ static const struct dm_spi_flash_ops spi_flash_std_ops = {
.read = spi_flash_std_read,
.write = spi_flash_std_write,
.erase = spi_flash_std_erase,
- .get_sw_write_prot = spi_flash_std_get_sw_write_prot,
};
static const struct udevice_id spi_flash_std_ids[] = {
@@ -2639,14 +2639,3 @@ int spi_nor_scan(struct spi_nor *nor)
return 0;
}
-
-/* U-Boot specific functions, need to extend MTD to support these */
-int spi_flash_cmd_get_sw_write_prot(struct spi_nor *nor)
-{
- int sr = read_sr(nor);
-
- if (sr < 0)
- return sr;
-
- return (sr >> 2) & 7;
-}
@@ -797,9 +797,3 @@ int spi_nor_scan(struct spi_nor *nor)
return 0;
}
-
-/* U-Boot specific functions, need to extend MTD to support these */
-int spi_flash_cmd_get_sw_write_prot(struct spi_nor *nor)
-{
- return -ENOTSUPP;
-}
@@ -34,19 +34,6 @@ struct dm_spi_flash_ops {
int (*write)(struct udevice *dev, u32 offset, size_t len,
const void *buf);
int (*erase)(struct udevice *dev, u32 offset, size_t len);
- /**
- * get_sw_write_prot() - Check state of software write-protect feature
- *
- * SPI flash chips can lock a region of the flash defined by a
- * 'protected area'. This function checks if this protected area is
- * defined.
- *
- * @dev: SPI flash device
- * @return 0 if no region is write-protected, 1 if a region is
- * write-protected, -ENOSYS if the driver does not implement this,
- * other -ve value on error
- */
- int (*get_sw_write_prot)(struct udevice *dev);
};
/* Access the serial operations for a device */
@@ -88,20 +75,6 @@ int spi_flash_write_dm(struct udevice *dev, u32 offset, size_t len,
*/
int spi_flash_erase_dm(struct udevice *dev, u32 offset, size_t len);
-/**
- * spl_flash_get_sw_write_prot() - Check state of software write-protect feature
- *
- * SPI flash chips can lock a region of the flash defined by a
- * 'protected area'. This function checks if this protected area is
- * defined.
- *
- * @dev: SPI flash device
- * @return 0 if no region is write-protected, 1 if a region is
- * write-protected, -ENOSYS if the driver does not implement this,
- * other -ve value on error
- */
-int spl_flash_get_sw_write_prot(struct udevice *dev);
-
/**
* spi_flash_std_probe() - Probe a SPI flash device
*
@@ -50,14 +50,6 @@ static int dm_test_spi_flash(struct unit_test_state *uts)
ut_assertok(spi_flash_read_dm(dev, 0, size, dst));
ut_assertok(memcmp(src, dst, size));
- /* Try the write-protect stuff */
- ut_assertok(uclass_first_device_err(UCLASS_SPI_EMUL, &emul));
- ut_asserteq(0, spl_flash_get_sw_write_prot(dev));
- sandbox_sf_set_block_protect(emul, 1);
- ut_asserteq(1, spl_flash_get_sw_write_prot(dev));
- sandbox_sf_set_block_protect(emul, 0);
- ut_asserteq(0, spl_flash_get_sw_write_prot(dev));
-
/* Check mapping */
ut_assertok(dm_spi_get_mmap(dev, &map_base, &map_size, &offset));
ut_asserteq(0x1000, map_base);
The get_sw_write_prot API is used to get the write-protected bits of flash by reading the status register and other wards it's API for reading register bits. 1) This kind of requirement can be achieved using existing flash operations and flash locking API calls instead of making a separate flash API. 2) Technically there is no real hardware user for this API to use in the source tree. 3) Having a flash operations API for simple register read bits also make difficult to extend the flash operations. 4) Instead of touching generic code, it is possible to have this functionality inside spinor operations in the form of flash hooks or fixups for associated flash chips. Considering all these points, this patch drops the get_sw_write_prot and associated code bases. Cc: Simon Glass <sjg@chromium.org> Cc: Vignesh R <vigneshr@ti.com> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> --- drivers/mtd/spi/sf-uclass.c | 9 --------- drivers/mtd/spi/sf_internal.h | 4 ---- drivers/mtd/spi/sf_probe.c | 8 -------- drivers/mtd/spi/spi-nor-core.c | 11 ----------- drivers/mtd/spi/spi-nor-tiny.c | 6 ------ include/spi_flash.h | 27 --------------------------- test/dm/sf.c | 8 -------- 7 files changed, 73 deletions(-)