linux-kernel - [PATCH 13/23] mtd: st_spi_fsm: Fetch platform specific configurations

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Message-Id: <1385137380-28968-14-git-send-email-lee.jones@linaro.org>
Date:	Fri, 22 Nov 2013 16:22:50 +0000
From:	Lee Jones <lee.jones@...aro.org>
To:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	dwmw2@...radead.org, linux-mtd@...ts.infradead.org,
	angus.clark@...com
Cc:	linus.walleij@...aro.org, Lee Jones <lee.jones@...aro.org>
Subject: [PATCH 13/23] mtd: st_spi_fsm: Fetch platform specific configurations

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@...aro.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 0b32fef..5bced00 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_32BITADDR;
+}
+
 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;
-- 
1.8.1.2

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