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