From c0f3b8643a6fa2461d70760ec49d21d2b031d611 Mon Sep 17 00:00:00 2001 From: Ezequiel Garcia Date: Sat, 10 Aug 2013 16:34:52 -0300 Subject: [PATCH] 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 Tested-by: Daniel Mack Cc: devicetree@vger.kernel.org Signed-off-by: Brian Norris Signed-off-by: David Woodhouse --- 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 501e380..c4bff66 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 ? */ @@ -1192,11 +1203,28 @@ static int pxa3xx_nand_remove(struct platform_device *pdev) #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 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; -- 2.7.4