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.
Cc: devicetree@xxxxxxxxxxxxxxx
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@xxxxxxxxxxxxxxxxxx>
---
drivers/mtd/nand/pxa3xx_nand.c | 31 ++++++++++++++++++++++++++++++-
1 file changed, 30 insertions(+), 1 deletion(-)
diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c
index 02f214d..55eb153 100644
--- 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 ? */
@@ -1191,11 +1202,28 @@ static int pxa3xx_nand_remove(struct platform_device *pdev)
}
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;
@@ -1245,6 +1273,7 @@ static int pxa3xx_nand_probe(struct platform_device *pdev)
}
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;
--
1.8.1.5
--
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