package/boot/uboot-lantiq/patches/0011-net-switchlib-add-driver-for-Lantiq-ADM6996I-switch-.patch

   1 From c291443dc97dadcf0c6afd04688a7d9f79a221b5 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 @@ -11,6 +11,7 @@ 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 +1,115 @@
  21 +/*
  22 + * Copyright (C) 2011-2013 Daniel Schwierzeck, daniel.schwierzeck@gmail.com
  23 + *
  24 + * SPDX-License-Identifier:    GPL-2.0+
  25 + */
  26 +
  27 +#include <common.h>
  28 +#include <malloc.h>
  29 +#include <switch.h>
  30 +#include <miiphy.h>
  31 +
  32 +#define ADM6996I_CHIPID0       0x1020
  33 +#define ADM6996I_CHIPID1       0x0007
  34 +#define ADM6996I_PORT_COUNT    6
  35 +
  36 +#define ADM6996I_REG_P0BC      0x001   /* P0 Basic Control */
  37 +#define ADM6996I_REG_P1BC      0x003   /* P1 Basic Control */
  38 +#define ADM6996I_REG_P2BC      0x005   /* P2 Basic Control */
  39 +#define ADM6996I_REG_P3BC      0x007   /* P3 Basic Control */
  40 +#define ADM6996I_REG_P4BC      0x008   /* P4 Basic Control */
  41 +#define ADM6996I_REG_P5BC      0x009   /* P5 Basic Control */
  42 +
  43 +#define ADM6996I_REG_P0EC      0x002   /* P0 Extended Control */
  44 +#define ADM6996I_REG_P1EC      0x002   /* P1 Extended Control */
  45 +#define ADM6996I_REG_P2EC      0x004   /* P2 Extended Control */
  46 +#define ADM6996I_REG_P3EC      0x004   /* P3 Extended Control */
  47 +#define ADM6996I_REG_P4EC      0x006   /* P4 Extended Control */
  48 +#define ADM6996I_REG_P5EC      0x006   /* P5 Extended Control */
  49 +
  50 +#define ADM6996I_REG_SC4       0x012   /* System Control 4 */
  51 +
  52 +#define ADM6996I_REG_CI0       0xA0    /* Chip Identifier 0 */
  53 +#define ADM6996I_REG_CI1       0xA1    /* Chip Identifier 1 */
  54 +
  55 +#define ADM6996I_REG_PXBC_DEFAULT      0x040F
  56 +#define ADM6996I_REG_PXBC_CROSS_EE     (1 << 15)
  57 +#define ADM6996I_REG_PXBC_PD           (1 << 5)
  58 +
  59 +#define ADM6996I_REG_SC4_DEFAULT       0x3600
  60 +#define ADM6996I_REG_SC4_LED_ENABLE    (1 << 1)
  61 +
  62 +#define ADM6996I_REG_CI0_PC_MASK       0xFFF0
  63 +#define ADM6996I_REG_CI0_VN_MASK       0xF
  64 +#define ADM6996I_REG_CI1_PC_MASK       0xF
  65 +
  66 +
  67 +static inline int adm6996i_mii_read(struct mii_dev *bus, u16 reg)
  68 +{
  69 +       int ret;
  70 +
  71 +       ret = bus->read(bus, (reg >> 5) & 0x1f, MDIO_DEVAD_NONE, reg & 0x1f);
  72 +
  73 +       return ret;
  74 +}
  75 +
  76 +static inline int adm6996i_mii_write(struct mii_dev *bus, u16 reg, u16 val)
  77 +{
  78 +       int ret;
  79 +
  80 +       ret = bus->write(bus, (reg >> 5) & 0x1f, MDIO_DEVAD_NONE,
  81 +               reg & 0x1f, val);
  82 +
  83 +       return ret;
  84 +}
  85 +
  86 +static int adm6996i_probe(struct switch_device *dev)
  87 +{
  88 +       struct mii_dev *bus = dev->bus;
  89 +       u16 ci0, ci1;
  90 +
  91 +       ci0 = adm6996i_mii_read(bus, ADM6996I_REG_CI0);
  92 +       ci1 = adm6996i_mii_read(bus, ADM6996I_REG_CI1);
  93 +
  94 +       ci0 &= ADM6996I_REG_CI0_PC_MASK;
  95 +       ci1 &= ADM6996I_REG_CI1_PC_MASK;
  96 +
  97 +       if (ci0 == ADM6996I_CHIPID0 && ci1 == ADM6996I_CHIPID1)
  98 +               return 0;
  99 +
 100 +       return 1;
 101 +}
 102 +
 103 +static void adm6996i_setup(struct switch_device *dev)
 104 +{
 105 +       struct mii_dev *bus = dev->bus;
 106 +       u16 val;
 107 +
 108 +       /*
 109 +        * Write default values (Port enable, 100 Mbps, Full Duplex,
 110 +        * Auto negotiation, Flow control) and enable crossover auto-detect
 111 +        */
 112 +       val = ADM6996I_REG_PXBC_DEFAULT | ADM6996I_REG_PXBC_CROSS_EE;
 113 +       adm6996i_mii_write(bus, ADM6996I_REG_P0BC, val);
 114 +       adm6996i_mii_write(bus, ADM6996I_REG_P1BC, val);
 115 +       adm6996i_mii_write(bus, ADM6996I_REG_P2BC, val);
 116 +       adm6996i_mii_write(bus, ADM6996I_REG_P3BC, val);
 117 +       adm6996i_mii_write(bus, ADM6996I_REG_P4BC, val);
 118 +       adm6996i_mii_write(bus, ADM6996I_REG_P5BC, val);
 119 +
 120 +       val = ADM6996I_REG_SC4_DEFAULT | ADM6996I_REG_SC4_LED_ENABLE;
 121 +       adm6996i_mii_write(bus, ADM6996I_REG_SC4, val);
 122 +}
 123 +
 124 +static struct switch_driver adm6996i_drv = {
 125 +       .name = "adm6996i",
 126 +};
 127 +
 128 +void switch_adm6996i_init(void)
 129 +{
 130 +       /* For archs with manual relocation */
 131 +       adm6996i_drv.probe = adm6996i_probe;
 132 +       adm6996i_drv.setup = adm6996i_setup;
 133 +
 134 +       switch_driver_register(&adm6996i_drv);
 135 +}
 136 --- a/drivers/net/switch/switch.c
 137 +++ b/drivers/net/switch/switch.c
 138 @@ -20,6 +20,9 @@ void switch_init(void)
 139  #if defined(CONFIG_SWITCH_PSB697X)
 140         switch_psb697x_init();
 141  #endif
 142 +#if defined(CONFIG_SWITCH_ADM6996I)
 143 +       switch_adm6996i_init();
 144 +#endif
 145
 146         board_switch_init();
 147  }
 148 --- a/include/switch.h
 149 +++ b/include/switch.h
 150 @@ -98,6 +98,7 @@ static inline void switch_setup(struct s
 151
 152  /* Init functions for supported Switch drivers */
 153  extern void switch_psb697x_init(void);
 154 +extern void switch_adm6996i_init(void);
 155
 156  #endif /* __SWITCH_H */
 157