[PATCH v3 12/36] mtd: st_spi_fsm: Fetch platform specific configurations

Lee Jones
2013-11-29T12:26:27Z

All supported platforms are able to pass specific configurations via
the Device Tree on boot. Here we add a function which is to be called
during the probing process which will extract them, or make other
assumptions based on capabilities provided.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
---
drivers/mtd/devices/st_spi_fsm.c | 11 +++++++++++
1 file changed, 11 insertions(+)

diff --git a/drivers/mtd/devices/st_spi_fsm.c b/drivers/mtd/devices/st_spi_fsm.c
index 5f21d14..1f54983 100644
--- a/drivers/mtd/devices/st_spi_fsm.c
+++ b/drivers/mtd/devices/st_spi_fsm.c
@@ -273,6 +273,15 @@ static int stfsm_init(struct stfsm *fsm)
return 0;
}

+static void stfsm_fetch_platform_configs(struct platform_device *pdev)
+{
+ struct stfsm *fsm = platform_get_drvdata(pdev);
+ struct flash_info *info = fsm->info;
+
+ if (info->sector_size * info->n_sectors > 0xFFFFFF)
+ info->flags |= FLASH_FLAG_32BIT_ADDR;
+}
+
static int stfsm_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
@@ -331,6 +340,8 @@ static int stfsm_probe(struct platform_device *pdev)

platform_set_drvdata(pdev, fsm);

+ stfsm_fetch_platform_configs(pdev);
+
fsm->mtd.dev.parent = &pdev->dev;
fsm->mtd.type = MTD_NORFLASH;
fsm->mtd.writesize = 4;
--
1.8.3.2