target/linux/brcm47xx/patches-3.2/0043-bcma-add-extra-sprom-check.patch

   1 From 1cd3d0de72e42161fe0df355c5429459265aeef0 Mon Sep 17 00:00:00 2001
   2 From: Hauke Mehrtens <hauke@hauke-m.de>
   3 Date: Sat, 14 Jan 2012 16:11:17 +0100
   4 Subject: [PATCH 30/32] bcma: add extra sprom check
   5
   6 This check is needed on the BCM43224 device as it says in the
   7 capabilities it has an sprom but is extra check says it has not.
   8
   9 Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
  10 ---
  11  drivers/bcma/sprom.c                        |    8 ++++++++
  12  include/linux/bcma/bcma_driver_chipcommon.h |   16 ++++++++++++++++
  13  2 files changed, 24 insertions(+), 0 deletions(-)
  14
  15 --- a/drivers/bcma/sprom.c
  16 +++ b/drivers/bcma/sprom.c
  17 @@ -209,6 +209,7 @@ int bcma_sprom_get(struct bcma_bus *bus)
  18  {
  19         u16 offset;
  20         u16 *sprom;
  21 +       u32 sromctrl;
  22         int err = 0;
  23
  24         if (!bus->drv_cc.core)
  25 @@ -217,6 +218,12 @@ int bcma_sprom_get(struct bcma_bus *bus)
  26         if (!(bus->drv_cc.capabilities & BCMA_CC_CAP_SPROM))
  27                 return -ENOENT;
  28
  29 +       if (bus->drv_cc.core->id.rev >= 32) {
  30 +               sromctrl = bcma_read32(bus->drv_cc.core, BCMA_CC_SROM_CONTROL);
  31 +               if (!(sromctrl & BCMA_CC_SROM_CONTROL_PRESENT))
  32 +                       return -ENOENT;
  33 +       }
  34 +
  35         sprom = kcalloc(SSB_SPROMSIZE_WORDS_R4, sizeof(u16),
  36                         GFP_KERNEL);
  37         if (!sprom)
  38 --- a/include/linux/bcma/bcma_driver_chipcommon.h
  39 +++ b/include/linux/bcma/bcma_driver_chipcommon.h
  40 @@ -239,6 +239,22 @@
  41  #define BCMA_CC_FLASH_CFG              0x0128
  42  #define  BCMA_CC_FLASH_CFG_DS          0x0010  /* Data size, 0=8bit, 1=16bit */
  43  #define BCMA_CC_FLASH_WAITCNT          0x012C
  44 +#define BCMA_CC_SROM_CONTROL           0x0190
  45 +#define  BCMA_CC_SROM_CONTROL_START    0x80000000
  46 +#define  BCMA_CC_SROM_CONTROL_BUSY     0x80000000
  47 +#define  BCMA_CC_SROM_CONTROL_OPCODE   0x60000000
  48 +#define  BCMA_CC_SROM_CONTROL_OP_READ  0x00000000
  49 +#define  BCMA_CC_SROM_CONTROL_OP_WRITE 0x20000000
  50 +#define  BCMA_CC_SROM_CONTROL_OP_WRDIS 0x40000000
  51 +#define  BCMA_CC_SROM_CONTROL_OP_WREN  0x60000000
  52 +#define  BCMA_CC_SROM_CONTROL_OTPSEL   0x00000010
  53 +#define  BCMA_CC_SROM_CONTROL_LOCK     0x00000008
  54 +#define  BCMA_CC_SROM_CONTROL_SIZE_MASK        0x00000006
  55 +#define  BCMA_CC_SROM_CONTROL_SIZE_1K  0x00000000
  56 +#define  BCMA_CC_SROM_CONTROL_SIZE_4K  0x00000002
  57 +#define  BCMA_CC_SROM_CONTROL_SIZE_16K 0x00000004
  58 +#define  BCMA_CC_SROM_CONTROL_SIZE_SHIFT       1
  59 +#define  BCMA_CC_SROM_CONTROL_PRESENT  0x00000001
  60  /* 0x1E0 is defined as shared BCMA_CLKCTLST */
  61  #define BCMA_CC_HW_WORKAROUND          0x01E4 /* Hardware workaround (rev >= 20) */
  62  #define BCMA_CC_UART0_DATA             0x0300