package/boot/uboot-lantiq/patches/0012-net-switchlib-add-driver-for-Atheros-AR8216.patch

   1 From 1a1d61a2faf0390033a3766559ce0e758e15894e Mon Sep 17 00:00:00 2001
   2 From: Luka Perkov <openwrt@lukaperkov.net>
   3 Date: Wed, 29 Aug 2012 22:08:16 +0200
   4 Subject: net: switchlib: add driver for Atheros AR8216
   5
   6 Signed-off-by: Luka Perkov <openwrt@lukaperkov.net>
   7 Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
   8
   9 diff --git a/drivers/net/switch/Makefile b/drivers/net/switch/Makefile
  10 index 6b7eeb9..7400897 100644
  11 --- a/drivers/net/switch/Makefile
  12 +++ b/drivers/net/switch/Makefile
  13 @@ -12,6 +12,7 @@ LIB   := $(obj)libswitch.o
  14  COBJS-$(CONFIG_SWITCH_MULTI) += switch.o
  15  COBJS-$(CONFIG_SWITCH_PSB697X) += psb697x.o
  16  COBJS-$(CONFIG_SWITCH_ADM6996I) += adm6996i.o
  17 +COBJS-$(CONFIG_SWITCH_AR8216) += ar8216.o
  18
  19  COBJS  := $(COBJS-y)
  20  SRCS   := $(COBJS:.o=.c)
  21 diff --git a/drivers/net/switch/ar8216.c b/drivers/net/switch/ar8216.c
  22 new file mode 100644
  23 index 0000000..f1348f0
  24 --- /dev/null
  25 +++ b/drivers/net/switch/ar8216.c
  26 @@ -0,0 +1,114 @@
  27 +/*
  28 + * Copyright (C) 2012 Luka Perkov <luka@openwrt.org>
  29 + *
  30 + * SPDX-License-Identifier:    GPL-2.0+
  31 + */
  32 +
  33 +#include <common.h>
  34 +#include <malloc.h>
  35 +#include <miiphy.h>
  36 +#include <switch.h>
  37 +#include <netdev.h>
  38 +
  39 +#define BITS(_s, _n)  (((1UL << (_n)) - 1) << _s)
  40 +
  41 +#define AR8216_REG_CTRL                        0x0000
  42 +#define   AR8216_CTRL_REVISION         BITS(0, 8)
  43 +#define   AR8216_CTRL_VERSION          BITS(8, 8)
  44 +
  45 +#define AR8216_PROBE_RETRIES           10
  46 +
  47 +static void split_addr(u32 regaddr, u16 *r1, u16 *r2, u16 *page)
  48 +{
  49 +       regaddr >>= 1;
  50 +       *r1 = regaddr & 0x1e;
  51 +
  52 +       regaddr >>= 5;
  53 +       *r2 = regaddr & 0x7;
  54 +
  55 +       regaddr >>= 3;
  56 +       *page = regaddr & 0x1ff;
  57 +}
  58 +
  59 +static int ar8216_mii_read(struct mii_dev *bus, u32 reg)
  60 +{
  61 +       u16 r1, r2, page;
  62 +       u16 lo, hi;
  63 +
  64 +       split_addr(reg, &r1, &r2, &page);
  65 +
  66 +       bus->write(bus, 0x18, MDIO_DEVAD_NONE, 0, page);
  67 +       __udelay(1000);
  68 +
  69 +       lo = bus->read(bus, 0x10 | r2, MDIO_DEVAD_NONE, r1);
  70 +       hi = bus->read(bus, 0x10 | r2, MDIO_DEVAD_NONE, r1 + 1);
  71 +
  72 +       return (hi << 16) | lo;
  73 +}
  74 +
  75 +static void ar8216_mii_write(struct mii_dev *bus, u16 reg, u32 val)
  76 +{
  77 +       u16 r1, r2, r3;
  78 +       u16 lo, hi;
  79 +
  80 +       split_addr((u32) reg, &r1, &r2, &r3);
  81 +
  82 +       bus->write(bus, 0x18, MDIO_DEVAD_NONE, 0, r3);
  83 +       __udelay(1000);
  84 +
  85 +       lo = val & 0xffff;
  86 +       hi = (u16) (val >> 16);
  87 +       bus->write(bus, 0x10 | r2, MDIO_DEVAD_NONE, r1 + 1, hi);
  88 +       bus->write(bus, 0x10 | r2, MDIO_DEVAD_NONE, r1, lo);
  89 +}
  90 +
  91 +static int ar8216_probe(struct switch_device *dev)
  92 +{
  93 +       struct mii_dev *bus = dev->bus;
  94 +       u32 val;
  95 +       u16 id;
  96 +
  97 +       val = ar8216_mii_read(bus, AR8216_REG_CTRL);
  98 +       if (val == ~0)
  99 +               return 1;
 100 +
 101 +       id = val & (AR8216_CTRL_REVISION | AR8216_CTRL_VERSION);
 102 +
 103 +       switch (id) {
 104 +               case 0x0101:
 105 +                       return 0;
 106 +               default:
 107 +                       return 1;
 108 +       }
 109 +}
 110 +
 111 +static void ar8216_setup(struct switch_device *dev)
 112 +{
 113 +       struct mii_dev *bus = dev->bus;
 114 +
 115 +       ar8216_mii_write(bus, 0x200, 0x200);
 116 +       ar8216_mii_write(bus, 0x300, 0x200);
 117 +       ar8216_mii_write(bus, 0x400, 0x200);
 118 +       ar8216_mii_write(bus, 0x500, 0x200);
 119 +       ar8216_mii_write(bus, 0x600, 0x7d);
 120 +       ar8216_mii_write(bus, 0x38, 0xc000050e);
 121 +       ar8216_mii_write(bus, 0x104, 0x4004);
 122 +       ar8216_mii_write(bus, 0x60, 0xffffffff);
 123 +       ar8216_mii_write(bus, 0x64, 0xaaaaaaaa);
 124 +       ar8216_mii_write(bus, 0x68, 0x55555555);
 125 +       ar8216_mii_write(bus, 0x6c, 0x0);
 126 +       ar8216_mii_write(bus, 0x70, 0x41af);
 127 +}
 128 +
 129 +static struct switch_driver ar8216_drv = {
 130 +       .name = "ar8216",
 131 +};
 132 +
 133 +void switch_ar8216_init(void)
 134 +{
 135 +       /* for archs with manual relocation */
 136 +       ar8216_drv.probe = ar8216_probe;
 137 +       ar8216_drv.setup = ar8216_setup;
 138 +
 139 +       switch_driver_register(&ar8216_drv);
 140 +}
 141 diff --git a/drivers/net/switch/switch.c b/drivers/net/switch/switch.c
 142 index ea3fe9c..3e34a7f 100644
 143 --- a/drivers/net/switch/switch.c
 144 +++ b/drivers/net/switch/switch.c
 145 @@ -23,6 +23,9 @@ void switch_init(void)
 146  #if defined(CONFIG_SWITCH_ADM6996I)
 147         switch_adm6996i_init();
 148  #endif
 149 +#if defined(CONFIG_SWITCH_AR8216)
 150 +       switch_ar8216_init();
 151 +#endif
 152
 153         board_switch_init();
 154  }
 155 diff --git a/include/switch.h b/include/switch.h
 156 index 4b46df0..ae7b123 100644
 157 --- a/include/switch.h
 158 +++ b/include/switch.h
 159 @@ -99,6 +99,7 @@ static inline void switch_setup(struct switch_device *dev)
 160  /* Init functions for supported Switch drivers */
 161  extern void switch_psb697x_init(void);
 162  extern void switch_adm6996i_init(void);
 163 +extern void switch_ar8216_init(void);
 164
 165  #endif /* __SWITCH_H */
 166
 167 --
 168 1.8.3.2
 169