target/linux/mvebu/patches-3.10/0135-mtd-nand-pxa3xx-Early-variant-detection.patch

   1 From dc333ddda677d416a6726509e144c6dfb93e7e89 Mon Sep 17 00:00:00 2001
   2 From: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
   3 Date: Thu, 7 Nov 2013 12:17:14 -0300
   4 Subject: [PATCH 135/203] mtd: nand: pxa3xx: Early variant detection
   5
   6 In order to customize early settings depending on the detected SoC variant,
   7 move the detection to be before the nand_chip struct filling.
   8
   9 In a follow-up patch, this change is needed to detect the variant *before*
  10 the call to alloc_nand_resource(), which allows to set a different cmdfunc()
  11 for each variant.
  12
  13 Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
  14 Tested-by: Daniel Mack <zonque@gmail.com>
  15 Signed-off-by: Brian Norris <computersforpeace@gmail.com>
  16 ---
  17  drivers/mtd/nand/pxa3xx_nand.c | 48 +++++++++++++++++++++---------------------
  18  1 file changed, 24 insertions(+), 24 deletions(-)
  19
  20 --- a/drivers/mtd/nand/pxa3xx_nand.c
  21 +++ b/drivers/mtd/nand/pxa3xx_nand.c
  22 @@ -258,6 +258,29 @@ static struct pxa3xx_nand_flash builtin_
  23  /* convert nano-seconds to nand flash controller clock cycles */
  24  #define ns2cycle(ns, clk)      (int)((ns) * (clk / 1000000) / 1000)
  25
  26 +static struct of_device_id pxa3xx_nand_dt_ids[] = {
  27 +       {
  28 +               .compatible = "marvell,pxa3xx-nand",
  29 +               .data       = (void *)PXA3XX_NAND_VARIANT_PXA,
  30 +       },
  31 +       {
  32 +               .compatible = "marvell,armada370-nand",
  33 +               .data       = (void *)PXA3XX_NAND_VARIANT_ARMADA370,
  34 +       },
  35 +       {}
  36 +};
  37 +MODULE_DEVICE_TABLE(of, pxa3xx_nand_dt_ids);
  38 +
  39 +static enum pxa3xx_nand_variant
  40 +pxa3xx_nand_get_variant(struct platform_device *pdev)
  41 +{
  42 +       const struct of_device_id *of_id =
  43 +                       of_match_device(pxa3xx_nand_dt_ids, &pdev->dev);
  44 +       if (!of_id)
  45 +               return PXA3XX_NAND_VARIANT_PXA;
  46 +       return (enum pxa3xx_nand_variant)of_id->data;
  47 +}
  48 +
  49  static void pxa3xx_nand_set_timing(struct pxa3xx_nand_host *host,
  50                                    const struct pxa3xx_nand_timing *t)
  51  {
  52 @@ -1125,6 +1148,7 @@ static int alloc_nand_resource(struct pl
  53                 return -ENOMEM;
  54
  55         info->pdev = pdev;
  56 +       info->variant = pxa3xx_nand_get_variant(pdev);
  57         for (cs = 0; cs < pdata->num_cs; cs++) {
  58                 mtd = (struct mtd_info *)((unsigned int)&info[1] +
  59                       (sizeof(*mtd) + sizeof(*host)) * cs);
  60 @@ -1259,29 +1283,6 @@ static int pxa3xx_nand_remove(struct pla
  61         return 0;
  62  }
  63
  64 -static struct of_device_id pxa3xx_nand_dt_ids[] = {
  65 -       {
  66 -               .compatible = "marvell,pxa3xx-nand",
  67 -               .data       = (void *)PXA3XX_NAND_VARIANT_PXA,
  68 -       },
  69 -       {
  70 -               .compatible = "marvell,armada370-nand",
  71 -               .data       = (void *)PXA3XX_NAND_VARIANT_ARMADA370,
  72 -       },
  73 -       {}
  74 -};
  75 -MODULE_DEVICE_TABLE(of, pxa3xx_nand_dt_ids);
  76 -
  77 -static enum pxa3xx_nand_variant
  78 -pxa3xx_nand_get_variant(struct platform_device *pdev)
  79 -{
  80 -       const struct of_device_id *of_id =
  81 -                       of_match_device(pxa3xx_nand_dt_ids, &pdev->dev);
  82 -       if (!of_id)
  83 -               return PXA3XX_NAND_VARIANT_PXA;
  84 -       return (enum pxa3xx_nand_variant)of_id->data;
  85 -}
  86 -
  87  static int pxa3xx_nand_probe_dt(struct platform_device *pdev)
  88  {
  89         struct pxa3xx_nand_platform_data *pdata;
  90 @@ -1338,7 +1339,6 @@ static int pxa3xx_nand_probe(struct plat
  91         }
  92
  93         info = platform_get_drvdata(pdev);
  94 -       info->variant = pxa3xx_nand_get_variant(pdev);
  95         probe_success = 0;
  96         for (cs = 0; cs < pdata->num_cs; cs++) {
  97                 struct mtd_info *mtd = info->host[cs]->mtd;