target/linux/brcm47xx/patches-3.18/800-bcma-add-table-of-serial-flashes-with-smaller-blocks.patch

   1 From 597715c61ae75a05ab3310a34ff3857a006f0f63 Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
   3 Date: Thu, 20 Nov 2014 21:32:42 +0100
   4 Subject: [PATCH] bcma: add table of serial flashes with smaller blocks
   5 MIME-Version: 1.0
   6 Content-Type: text/plain; charset=UTF-8
   7 Content-Transfer-Encoding: 8bit
   8
   9 Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
  10 ---
  11  drivers/bcma/driver_chipcommon_sflash.c | 29 +++++++++++++++++++++++++++++
  12  1 file changed, 29 insertions(+)
  13
  14 --- a/drivers/bcma/driver_chipcommon_sflash.c
  15 +++ b/drivers/bcma/driver_chipcommon_sflash.c
  16 @@ -9,6 +9,7 @@
  17
  18  #include <linux/platform_device.h>
  19  #include <linux/bcma/bcma.h>
  20 +#include <bcm47xx_board.h>
  21
  22  static struct resource bcma_sflash_resource = {
  23         .name   = "bcma_sflash",
  24 @@ -41,6 +42,13 @@ static const struct bcma_sflash_tbl_e bc
  25         { NULL },
  26  };
  27
  28 +/* Some devices use smaller blocks (and have more of them) */
  29 +static const struct bcma_sflash_tbl_e bcma_sflash_st_shrink_tbl[] = {
  30 +       { "M25P16", 0x14, 0x1000, 512, },
  31 +       { "M25P32", 0x15, 0x1000, 1024, },
  32 +       { NULL },
  33 +};
  34 +
  35  static const struct bcma_sflash_tbl_e bcma_sflash_sst_tbl[] = {
  36         { "SST25WF512", 1, 0x1000, 16, },
  37         { "SST25VF512", 0x48, 0x1000, 16, },
  38 @@ -84,6 +92,23 @@ static void bcma_sflash_cmd(struct bcma_
  39         bcma_err(cc->core->bus, "SFLASH control command failed (timeout)!\n");
  40  }
  41
  42 +const struct bcma_sflash_tbl_e *bcma_sflash_shrink_flash(u32 id)
  43 +{
  44 +       enum bcm47xx_board board = bcm47xx_board_get();
  45 +       const struct bcma_sflash_tbl_e *e;
  46 +
  47 +       switch (board) {
  48 +       case BCM47XX_BOARD_NETGEAR_WGR614_V10:
  49 +               for (e = bcma_sflash_st_shrink_tbl; e->name; e++) {
  50 +                       if (e->id == id)
  51 +                               return e;
  52 +               }
  53 +               return NULL;
  54 +       default:
  55 +               return NULL;
  56 +       }
  57 +}
  58 +
  59  /* Initialize serial flash access */
  60  int bcma_sflash_init(struct bcma_drv_cc *cc)
  61  {
  62 @@ -114,6 +139,10 @@ int bcma_sflash_init(struct bcma_drv_cc
  63                 case 0x13:
  64                         return -ENOTSUPP;
  65                 default:
  66 +                       e = bcma_sflash_shrink_flash(id);
  67 +                       if (e)
  68 +                               break;
  69 +
  70                         for (e = bcma_sflash_st_tbl; e->name; e++) {
  71                                 if (e->id == id)
  72                                         break;