tree 0611caf8ab75df49896c6c7890a96a7513fef88e
parent aca662a3b1c9b178536267da9fb2f0faa798cb7f
author Austin Boyle <Austin.Boyle@aviatnet.com> 1357257748 +1300
committer Artem Bityutskiy <artem.bityutskiy@linux.intel.com> 1359962789 +0200

mtd: m25p80: Flash protection support for STmicro chips

This patch adds generic support for flash protection on STmicro chips.
On chips with less than 3 protection bits, the unused bits are don't cares
and so can be written anyway. The lock function will only change the
protection bits if it would not unlock other areas. Similarly, the unlock
function will not lock currently unlocked areas. Tested on the m25p64.

Signed-off-by: Austin Boyle <Austin.Boyle@aviatnet.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>