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mtd: st_spi_fsm: Use device size to determine address width 

Take some known parameters, namely size and number of sectors and use
them to determine weather a device can support 32bit addressing or not.
If it can, set the associated flash capability flag for latter use.

Acked-by Angus Clark <angus.clark@st.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
This commit is contained in:
Lee Jones 2014-03-20 09:20:43 +00:00 committed by Brian Norris
parent 089812740d
commit 3b5d198193
1 changed files with 4 additions and 0 deletions
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4
drivers/mtd/devices/st_spi_fsm.c
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@ -671,6 +671,10 @@ static int stfsm_probe(struct platform_device *pdev)
return -ENODEV;
fsm->info = info;
/* Use device size to determine address width */
if (info->sector_size * info->n_sectors > 0x1000000)
info->flags |= FLASH_FLAG_32BIT_ADDR;
fsm->mtd.dev.parent = &pdev->dev;
fsm->mtd.type = MTD_NORFLASH;
fsm->mtd.writesize = 4;