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  1. 21 May, 2014 14 commits
  3. 20 May, 2014 9 commits
  5. 12 May, 2014 4 commits
  7. 09 May, 2014 1 commit
    • Brian Norris's avatar
      mtd: nand: refactor erase_cmd() to return chip status · 49c50b97
      Brian Norris authored 
      The nand_chip::erase_cmd callback previously served a dual purpose; for
one, it allowed a per-flash-chip override, so that AG-AND devices could
use a different erase command than other NAND. These AND devices were
dropped in commit 14c65786 (mtd: nand:
remove AG-AND support). On the other hand, some drivers (denali and
doc-g4) need to use this sort of callback to implement
controller-specific erase operations.

To make the latter operation easier for some drivers (e.g., ST's new BCH
NAND driver), it helps if the command dispatch and wait functions can be
lumped together, rather than called separately.

This patch does two things:
 1. Pull the call to chip->waitfunc() into chip->erase_cmd(), and return
    the status from this callback
 2. Rename erase_cmd() to just erase(), since this callback does a
    little more than just send a command
Signed-off-by: default avatarBrian Norris <computersforpeace@gmail.com>
Tested-by: default avatarLee Jones <lee.jones@linaro.org>
      49c50b97
  9. 29 Apr, 2014 1 commit
  11. 18 Apr, 2014 1 commit
  13. 17 Apr, 2014 3 commits
    • Brian Norris's avatar
      Merge branch 'spinor' · d66d3519
      Brian Norris authored 
      Addition of the spi-nor framework, plus updates to the ST SPI FSM
driver.
      d66d3519
    • Brian Norris's avatar
      mtd: st_spi_fsm: only build for ARM · dc002f99
      Brian Norris authored 
      COMPILE_TEST allows us to build this driver on other arch'es. But not
all arch'es have the right I/O accessors -- particularly, x86 is missing
readsl() and writesl().

So just restrict this driver to ARCH_STI. It's still buildable for a
multiplatform ARM kernel, so it can get decent compile coverage.
Signed-off-by: default avatarBrian Norris <computersforpeace@gmail.com>
Acked-by: default avatarLee Jones <lee.jones@linaro.org>
      dc002f99
    • Brian Norris's avatar
      mtd: st_spi_fsm: correct type issues · 38e2eee9
      Brian Norris authored 
      Compile-testing for a 64-bit arch uncovers several bad casts:

    In file included from include/linux/linkage.h:4:0,
                     from include/linux/kernel.h:6,
                     from drivers/mtd/devices/st_spi_fsm.c:15:
    drivers/mtd/devices/st_spi_fsm.c: In function ‘stfsm_read_fifo’:
    drivers/mtd/devices/st_spi_fsm.c:758:11: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
      BUG_ON((((uint32_t)buf) & 0x3) || (size & 0x3));
    ...

Use uintptr_t instead of uint32_t, since it's guaranteed to be
pointer-sized.

We also see this warning, if size_t is not 32 bits wide:

    In file included from drivers/mtd/devices/st_spi_fsm.c:15:0:
    drivers/mtd/devices/st_spi_fsm.c: In function ‘stfsm_mtd_write’:
    include/linux/kernel.h:712:17: warning: comparison of distinct pointer types lacks a cast [enabled by default]
      (void) (&_min1 == &_min2);  \
                     ^
    drivers/mtd/devices/st_spi_fsm.c:1704:11: note: in expansion of macro ‘min’
       bytes = min(FLASH_PAGESIZE - page_offs, len);
               ^

Just use min_t() to force the type conversion, since we don't really
want to upgrade 'page_offs' and 'bytes' to size_t; they only should be
handling <= 256 byte offsets.
Signed-off-by: default avatarBrian Norris <computersforpeace@gmail.com>
Acked-by: default avatarLee Jones <lee.jones@linaro.org>
      38e2eee9
  15. 16 Apr, 2014 7 commits
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