target/linux/brcm47xx/patches-3.2/0014-ssb-move-flash-to-chipcommon.patch

   1 From e8afde87ecf56beff67c7d5371cabaa4fc018541 Mon Sep 17 00:00:00 2001
   2 From: Hauke Mehrtens <hauke@hauke-m.de>
   3 Date: Sat, 23 Jul 2011 23:57:06 +0200
   4 Subject: [PATCH 14/26] ssb: move flash to chipcommon
   5
   6
   7 Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
   8 ---
   9  arch/mips/bcm47xx/nvram.c                 |    8 +++---
  10  arch/mips/bcm47xx/wgt634u.c               |    8 +++---
  11  drivers/ssb/driver_mipscore.c             |   36 +++++++++++++++++++++-------
  12  include/linux/ssb/ssb_driver_chipcommon.h |   18 ++++++++++++++
  13  include/linux/ssb/ssb_driver_mips.h       |    4 ---
  14  5 files changed, 53 insertions(+), 21 deletions(-)
  15
  16 --- a/arch/mips/bcm47xx/nvram.c
  17 +++ b/arch/mips/bcm47xx/nvram.c
  18 @@ -27,7 +27,7 @@ static char nvram_buf[NVRAM_SPACE];
  19  static void early_nvram_init(void)
  20  {
  21  #ifdef CONFIG_BCM47XX_SSB
  22 -       struct ssb_mipscore *mcore_ssb;
  23 +       struct ssb_chipcommon *ssb_cc;
  24  #endif
  25  #ifdef CONFIG_BCM47XX_BCMA
  26         struct bcma_drv_cc *bcma_cc;
  27 @@ -42,9 +42,9 @@ static void early_nvram_init(void)
  28         switch (bcm47xx_bus_type) {
  29  #ifdef CONFIG_BCM47XX_SSB
  30         case BCM47XX_BUS_TYPE_SSB:
  31 -               mcore_ssb = &bcm47xx_bus.ssb.mipscore;
  32 -               base = mcore_ssb->flash_window;
  33 -               lim = mcore_ssb->flash_window_size;
  34 +               ssb_cc = &bcm47xx_bus.ssb.chipco;
  35 +               base = ssb_cc->pflash.window;
  36 +               lim = ssb_cc->pflash.window_size;
  37                 break;
  38  #endif
  39  #ifdef CONFIG_BCM47XX_BCMA
  40 --- a/arch/mips/bcm47xx/wgt634u.c
  41 +++ b/arch/mips/bcm47xx/wgt634u.c
  42 @@ -156,10 +156,10 @@ static int __init wgt634u_init(void)
  43                                             SSB_CHIPCO_IRQ_GPIO);
  44                 }
  45
  46 -               wgt634u_flash_data.width = mcore->flash_buswidth;
  47 -               wgt634u_flash_resource.start = mcore->flash_window;
  48 -               wgt634u_flash_resource.end = mcore->flash_window
  49 -                                          + mcore->flash_window_size
  50 +               wgt634u_flash_data.width = mcore->pflash.buswidth;
  51 +               wgt634u_flash_resource.start = mcore->pflash.window;
  52 +               wgt634u_flash_resource.end = mcore->pflash.window
  53 +                                          + mcore->pflash.window_size
  54                                            - 1;
  55                 return platform_add_devices(wgt634u_devices,
  56                                             ARRAY_SIZE(wgt634u_devices));
  57 --- a/drivers/ssb/driver_mipscore.c
  58 +++ b/drivers/ssb/driver_mipscore.c
  59 @@ -190,16 +190,34 @@ static void ssb_mips_flash_detect(struct
  60  {
  61         struct ssb_bus *bus = mcore->dev->bus;
  62
  63 -       mcore->flash_buswidth = 2;
  64 -       if (bus->chipco.dev) {
  65 -               mcore->flash_window = 0x1c000000;
  66 -               mcore->flash_window_size = 0x02000000;
  67 +       /* When there is no chipcommon on the bus there is 4MB flash */
  68 +       if (!bus->chipco.dev) {
  69 +               pr_info("found parallel flash.\n");
  70 +               bus->chipco.flash_type = SSB_PFLASH;
  71 +               bus->chipco.pflash.window = SSB_FLASH1;
  72 +               bus->chipco.pflash.window_size = SSB_FLASH1_SZ;
  73 +               bus->chipco.pflash.buswidth = 2;
  74 +               return;
  75 +       }
  76 +
  77 +       switch (bus->chipco.capabilities & SSB_CHIPCO_CAP_FLASHT) {
  78 +       case SSB_CHIPCO_FLASHT_STSER:
  79 +       case SSB_CHIPCO_FLASHT_ATSER:
  80 +               pr_info("serial flash not supported.\n");
  81 +               break;
  82 +       case SSB_CHIPCO_FLASHT_PARA:
  83 +               pr_info("found parallel flash.\n");
  84 +               bus->chipco.flash_type = SSB_PFLASH;
  85 +               bus->chipco.pflash.window = SSB_FLASH2;
  86 +               bus->chipco.pflash.window_size = SSB_FLASH2_SZ;
  87                 if ((ssb_read32(bus->chipco.dev, SSB_CHIPCO_FLASH_CFG)
  88 -                              & SSB_CHIPCO_CFG_DS16) == 0)
  89 -                       mcore->flash_buswidth = 1;
  90 -       } else {
  91 -               mcore->flash_window = 0x1fc00000;
  92 -               mcore->flash_window_size = 0x00400000;
  93 +                    & SSB_CHIPCO_CFG_DS16) == 0)
  94 +                       bus->chipco.pflash.buswidth = 1;
  95 +               else
  96 +                       bus->chipco.pflash.buswidth = 2;
  97 +               break;
  98 +       default:
  99 +               pr_err("flash not supported.\n");
 100         }
 101  }
 102
 103 --- a/include/linux/ssb/ssb_driver_chipcommon.h
 104 +++ b/include/linux/ssb/ssb_driver_chipcommon.h
 105 @@ -582,6 +582,18 @@ struct ssb_chipcommon_pmu {
 106         u32 crystalfreq;        /* The active crystal frequency (in kHz) */
 107  };
 108
 109 +#ifdef CONFIG_SSB_DRIVER_MIPS
 110 +enum ssb_flash_type {
 111 +       SSB_PFLASH,
 112 +};
 113 +
 114 +struct ssb_pflash {
 115 +       u8 buswidth;
 116 +       u32 window;
 117 +       u32 window_size;
 118 +};
 119 +#endif /* CONFIG_SSB_DRIVER_MIPS */
 120 +
 121  struct ssb_chipcommon {
 122         struct ssb_device *dev;
 123         u32 capabilities;
 124 @@ -589,6 +601,12 @@ struct ssb_chipcommon {
 125         /* Fast Powerup Delay constant */
 126         u16 fast_pwrup_delay;
 127         struct ssb_chipcommon_pmu pmu;
 128 +#ifdef CONFIG_SSB_DRIVER_MIPS
 129 +       enum ssb_flash_type flash_type;
 130 +       union {
 131 +               struct ssb_pflash pflash;
 132 +       };
 133 +#endif /* CONFIG_SSB_DRIVER_MIPS */
 134  };
 135
 136  static inline bool ssb_chipco_available(struct ssb_chipcommon *cc)
 137 --- a/include/linux/ssb/ssb_driver_mips.h
 138 +++ b/include/linux/ssb/ssb_driver_mips.h
 139 @@ -19,10 +19,6 @@ struct ssb_mipscore {
 140
 141         int nr_serial_ports;
 142         struct ssb_serial_port serial_ports[4];
 143 -
 144 -       u8 flash_buswidth;
 145 -       u32 flash_window;
 146 -       u32 flash_window_size;
 147  };
 148
 149  extern void ssb_mipscore_init(struct ssb_mipscore *mcore);