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From 259e46e4327a9937761fd3f7bc07e208b1fa50e6 Mon Sep 17 00:00:00 2001
From: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Date: Sat, 10 Aug 2013 16:34:52 -0300
Subject: [PATCH 114/203] mtd: nand: pxa3xx: Introduce 'marvell,armada370-nand'
compatible string
This driver supports NFCv1 (as found in PXA SoC) and NFCv2 (as found in
Armada 370/XP SoC). As both controller has a few differences, a way of
distinguishing between the two is needed.
This commit introduces a new compatible string 'marvell,armada370-nand'
and assigns a compatible data of type enum pxa3xx_nand_variant to allow
such distinction.
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Tested-by: Daniel Mack <zonque@gmail.com>
Cc: devicetree@vger.kernel.org
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
---
drivers/mtd/nand/pxa3xx_nand.c | 31 ++++++++++++++++++++++++++++++-
1 file changed, 30 insertions(+), 1 deletion(-)
--- a/drivers/mtd/nand/pxa3xx_nand.c
+++ b/drivers/mtd/nand/pxa3xx_nand.c
@@ -123,6 +123,11 @@ enum {
STATE_READY,
};
+enum pxa3xx_nand_variant {
+ PXA3XX_NAND_VARIANT_PXA,
+ PXA3XX_NAND_VARIANT_ARMADA370,
+};
+
struct pxa3xx_nand_host {
struct nand_chip chip;
struct pxa3xx_nand_cmdset *cmdset;
@@ -171,6 +176,12 @@ struct pxa3xx_nand_info {
struct pxa3xx_nand_host *host[NUM_CHIP_SELECT];
unsigned int state;
+ /*
+ * This driver supports NFCv1 (as found in PXA SoC)
+ * and NFCv2 (as found in Armada 370/XP SoC).
+ */
+ enum pxa3xx_nand_variant variant;
+
int cs;
int use_ecc; /* use HW ECC ? */
int use_dma; /* use DMA ? */
@@ -1192,11 +1203,28 @@ static int pxa3xx_nand_remove(struct pla
#ifdef CONFIG_OF
static struct of_device_id pxa3xx_nand_dt_ids[] = {
- { .compatible = "marvell,pxa3xx-nand" },
+ {
+ .compatible = "marvell,pxa3xx-nand",
+ .data = (void *)PXA3XX_NAND_VARIANT_PXA,
+ },
+ {
+ .compatible = "marvell,armada370-nand",
+ .data = (void *)PXA3XX_NAND_VARIANT_ARMADA370,
+ },
{}
};
MODULE_DEVICE_TABLE(of, pxa3xx_nand_dt_ids);
+static enum pxa3xx_nand_variant
+pxa3xx_nand_get_variant(struct platform_device *pdev)
+{
+ const struct of_device_id *of_id =
+ of_match_device(pxa3xx_nand_dt_ids, &pdev->dev);
+ if (!of_id)
+ return PXA3XX_NAND_VARIANT_PXA;
+ return (enum pxa3xx_nand_variant)of_id->data;
+}
+
static int pxa3xx_nand_probe_dt(struct platform_device *pdev)
{
struct pxa3xx_nand_platform_data *pdata;
@@ -1252,6 +1280,7 @@ static int pxa3xx_nand_probe(struct plat
}
info = platform_get_drvdata(pdev);
+ info->variant = pxa3xx_nand_get_variant(pdev);
probe_success = 0;
for (cs = 0; cs < pdata->num_cs; cs++) {
info->cs = cs;
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