package/boot/uboot-lantiq/patches/0021-net-switchlib-add-driver-for-Lantiq-ADM6996I-switch-.patch

   1 From fcbbb1beb2ae862f5c703c5719ed0e155cbbf82f Mon Sep 17 00:00:00 2001
   2 From: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
   3 Date: Wed, 29 Aug 2012 22:08:16 +0200
   4 Subject: net: switchlib: add driver for Lantiq ADM6996I switch family
   5
   6 Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
   7
   8 --- a/drivers/net/switch/Makefile
   9 +++ b/drivers/net/switch/Makefile
  10 @@ -12,6 +12,7 @@ LIB   := $(obj)libswitch.o
  11
  12  COBJS-$(CONFIG_SWITCH_MULTI) += switch.o
  13  COBJS-$(CONFIG_SWITCH_PSB697X) += psb697x.o
  14 +COBJS-$(CONFIG_SWITCH_ADM6996I) += adm6996i.o
  15
  16  COBJS  := $(COBJS-y)
  17  SRCS   := $(COBJS:.o=.c)
  18 --- /dev/null
  19 +++ b/drivers/net/switch/adm6996i.c
  20 @@ -0,0 +1,116 @@
  21 +/*
  22 + * Copyright (C) 2011-2012 Daniel Schwierzeck, daniel.schwierzeck@gmail.com
  23 + *
  24 + * This file is released under the terms of GPL v2 and any later version.
  25 + * See the file COPYING in the root directory of the source tree for details.
  26 + */
  27 +
  28 +#include <common.h>
  29 +#include <malloc.h>
  30 +#include <switch.h>
  31 +#include <miiphy.h>
  32 +
  33 +#define ADM6996I_CHIPID0       0x1020
  34 +#define ADM6996I_CHIPID1       0x0007
  35 +#define ADM6996I_PORT_COUNT    6
  36 +
  37 +#define ADM6996I_REG_P0BC      0x001   /* P0 Basic Control */
  38 +#define ADM6996I_REG_P1BC      0x003   /* P1 Basic Control */
  39 +#define ADM6996I_REG_P2BC      0x005   /* P2 Basic Control */
  40 +#define ADM6996I_REG_P3BC      0x007   /* P3 Basic Control */
  41 +#define ADM6996I_REG_P4BC      0x008   /* P4 Basic Control */
  42 +#define ADM6996I_REG_P5BC      0x009   /* P5 Basic Control */
  43 +
  44 +#define ADM6996I_REG_P0EC      0x002   /* P0 Extended Control */
  45 +#define ADM6996I_REG_P1EC      0x002   /* P1 Extended Control */
  46 +#define ADM6996I_REG_P2EC      0x004   /* P2 Extended Control */
  47 +#define ADM6996I_REG_P3EC      0x004   /* P3 Extended Control */
  48 +#define ADM6996I_REG_P4EC      0x006   /* P4 Extended Control */
  49 +#define ADM6996I_REG_P5EC      0x006   /* P5 Extended Control */
  50 +
  51 +#define ADM6996I_REG_SC4       0x012   /* System Control 4 */
  52 +
  53 +#define ADM6996I_REG_CI0       0xA0    /* Chip Identifier 0 */
  54 +#define ADM6996I_REG_CI1       0xA1    /* Chip Identifier 1 */
  55 +
  56 +#define ADM6996I_REG_PXBC_DEFAULT      0x040F
  57 +#define ADM6996I_REG_PXBC_CROSS_EE     (1 << 15)
  58 +#define ADM6996I_REG_PXBC_PD           (1 << 5)
  59 +
  60 +#define ADM6996I_REG_SC4_DEFAULT       0x3600
  61 +#define ADM6996I_REG_SC4_LED_ENABLE    (1 << 1)
  62 +
  63 +#define ADM6996I_REG_CI0_PC_MASK       0xFFF0
  64 +#define ADM6996I_REG_CI0_VN_MASK       0xF
  65 +#define ADM6996I_REG_CI1_PC_MASK       0xF
  66 +
  67 +
  68 +static inline int adm6996i_mii_read(struct mii_dev *bus, u16 reg)
  69 +{
  70 +       int ret;
  71 +
  72 +       ret = bus->read(bus, (reg >> 5) & 0x1f, MDIO_DEVAD_NONE, reg & 0x1f);
  73 +
  74 +       return ret;
  75 +}
  76 +
  77 +static inline int adm6996i_mii_write(struct mii_dev *bus, u16 reg, u16 val)
  78 +{
  79 +       int ret;
  80 +
  81 +       ret = bus->write(bus, (reg >> 5) & 0x1f, MDIO_DEVAD_NONE,
  82 +               reg & 0x1f, val);
  83 +
  84 +       return ret;
  85 +}
  86 +
  87 +static int adm6996i_probe(struct switch_device *dev)
  88 +{
  89 +       struct mii_dev *bus = dev->bus;
  90 +       u16 ci0, ci1;
  91 +
  92 +       ci0 = adm6996i_mii_read(bus, ADM6996I_REG_CI0);
  93 +       ci1 = adm6996i_mii_read(bus, ADM6996I_REG_CI1);
  94 +
  95 +       ci0 &= ADM6996I_REG_CI0_PC_MASK;
  96 +       ci1 &= ADM6996I_REG_CI1_PC_MASK;
  97 +
  98 +       if (ci0 == ADM6996I_CHIPID0 && ci1 == ADM6996I_CHIPID1)
  99 +               return 0;
 100 +
 101 +       return 1;
 102 +}
 103 +
 104 +static void adm6996i_setup(struct switch_device *dev)
 105 +{
 106 +       struct mii_dev *bus = dev->bus;
 107 +       u16 val;
 108 +
 109 +       /*
 110 +        * Write default values (Port enable, 100 Mbps, Full Duplex,
 111 +        * Auto negotiation, Flow control) and enable crossover auto-detect
 112 +        */
 113 +       val = ADM6996I_REG_PXBC_DEFAULT | ADM6996I_REG_PXBC_CROSS_EE;
 114 +       adm6996i_mii_write(bus, ADM6996I_REG_P0BC, val);
 115 +       adm6996i_mii_write(bus, ADM6996I_REG_P1BC, val);
 116 +       adm6996i_mii_write(bus, ADM6996I_REG_P2BC, val);
 117 +       adm6996i_mii_write(bus, ADM6996I_REG_P3BC, val);
 118 +       adm6996i_mii_write(bus, ADM6996I_REG_P4BC, val);
 119 +       adm6996i_mii_write(bus, ADM6996I_REG_P5BC, val);
 120 +
 121 +       val = ADM6996I_REG_SC4_DEFAULT | ADM6996I_REG_SC4_LED_ENABLE;
 122 +       adm6996i_mii_write(bus, ADM6996I_REG_SC4, val);
 123 +}
 124 +
 125 +static struct switch_driver adm6996i_drv = {
 126 +       .name = "adm6996i",
 127 +};
 128 +
 129 +void switch_adm6996i_init(void)
 130 +{
 131 +       /* For archs with manual relocation */
 132 +       adm6996i_drv.probe = adm6996i_probe;
 133 +       adm6996i_drv.setup = adm6996i_setup;
 134 +
 135 +       switch_driver_register(&adm6996i_drv);
 136 +}
 137 --- a/drivers/net/switch/switch.c
 138 +++ b/drivers/net/switch/switch.c
 139 @@ -21,6 +21,9 @@ void switch_init(void)
 140  #if defined(CONFIG_SWITCH_PSB697X)
 141         switch_psb697x_init();
 142  #endif
 143 +#if defined(CONFIG_SWITCH_ADM6996I)
 144 +       switch_adm6996i_init();
 145 +#endif
 146
 147         board_switch_init();
 148  }
 149 --- a/include/switch.h
 150 +++ b/include/switch.h
 151 @@ -91,6 +91,7 @@ static inline void switch_setup(struct s
 152
 153  /* Init functions for supported Switch drivers */
 154  extern void switch_psb697x_init(void);
 155 +extern void switch_adm6996i_init(void);
 156
 157  #endif /* __SWITCH_H */
 158