board/freescale/common/vsc3316_3308.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright 2012 Freescale Semiconductor, Inc.
   4  */
   5
   6 #include "vsc3316_3308.h"
   7
   8 #define REVISION_ID_REG         0x7E
   9 #define INTERFACE_MODE_REG              0x79
  10 #define CURRENT_PAGE_REGISTER           0x7F
  11 #define CONNECTION_CONFIG_PAGE          0x00
  12 #define INPUT_STATE_REG         0x13
  13 #define GLOBAL_INPUT_ISE1               0x51
  14 #define GLOBAL_INPUT_ISE2               0x52
  15 #define GLOBAL_INPUT_GAIN               0x53
  16 #define GLOBAL_INPUT_LOS                0x55
  17 #define GLOBAL_OUTPUT_PE1               0x56
  18 #define GLOBAL_OUTPUT_PE2               0x57
  19 #define GLOBAL_OUTPUT_LEVEL             0x58
  20 #define GLOBAL_OUTPUT_TERMINATION       0x5A
  21 #define GLOBAL_CORE_CNTRL               0x5D
  22 #define OUTPUT_MODE_PAGE                0x23
  23 #define CORE_CONTROL_PAGE               0x25
  24 #define CORE_CONFIG_REG         0x75
  25
  26 int vsc_if_enable(unsigned int vsc_addr)
  27 {
  28         u8 data;
  29
  30         debug("VSC:Configuring VSC at I2C address 0x%2x"
  31                         " for 2-wire interface\n", vsc_addr);
  32
  33         /* enable 2-wire Serial InterFace (I2C) */
  34         data = 0x02;
  35         return i2c_write(vsc_addr, INTERFACE_MODE_REG, 1, &data, 1);
  36 }
  37
  38 int vsc3316_config(unsigned int vsc_addr, int8_t con_arr[][2],
  39                 unsigned int num_con)
  40 {
  41         unsigned int i;
  42         u8 rev_id = 0;
  43         int ret;
  44
  45         debug("VSC:Initializing VSC3316 at I2C address 0x%2x"
  46                 " for Tx\n", vsc_addr);
  47
  48         ret = i2c_read(vsc_addr, REVISION_ID_REG, 1, &rev_id, 1);
  49         if (ret < 0) {
  50                 printf("VSC:0x%x could not read REV_ID from device.\n",
  51                         vsc_addr);
  52                 return ret;
  53         }
  54
  55         if (rev_id != 0xab) {
  56                 printf("VSC: device at address 0x%x is not VSC3316/3308.\n",
  57                         vsc_addr);
  58                 return -ENODEV;
  59         }
  60
  61         ret = vsc_if_enable(vsc_addr);
  62         if (ret) {
  63                 printf("VSC:0x%x could not configured for 2-wire I/F.\n",
  64                         vsc_addr);
  65                 return ret;
  66         }
  67
  68         /* config connections - page 0x00 */
  69         i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, CONNECTION_CONFIG_PAGE);
  70
  71         /* Making crosspoint connections, by connecting required
  72          * input to output */
  73         for (i = 0; i < num_con ; i++)
  74                 i2c_reg_write(vsc_addr, con_arr[i][1], con_arr[i][0]);
  75
  76         /* input state - page 0x13 */
  77         i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, INPUT_STATE_REG);
  78         /* Configuring the required input of the switch */
  79         for (i = 0; i < num_con ; i++)
  80                 i2c_reg_write(vsc_addr, con_arr[i][0], 0x80);
  81
  82         /* Setting Global Input LOS threshold value */
  83         i2c_reg_write(vsc_addr, GLOBAL_INPUT_LOS, 0x60);
  84
  85         /* config output mode - page 0x23 */
  86         i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, OUTPUT_MODE_PAGE);
  87         /* Turn ON the Output driver correspond to required output*/
  88         for (i = 0; i < num_con ; i++)
  89                 i2c_reg_write(vsc_addr,  con_arr[i][1], 0);
  90
  91         /* configure global core control register, Turn on Global core power */
  92         i2c_reg_write(vsc_addr, GLOBAL_CORE_CNTRL, 0);
  93
  94         vsc_wp_config(vsc_addr);
  95
  96         return 0;
  97 }
  98
  99 #ifdef CONFIG_SYS_FSL_B4860QDS_XFI_ERR
 100 int vsc3308_config_adjust(unsigned int vsc_addr, const int8_t con_arr[][2],
 101                 unsigned int num_con)
 102 {
 103         unsigned int i;
 104         u8 rev_id = 0;
 105         int ret;
 106
 107         debug("VSC:Initializing VSC3308 at I2C address 0x%x for Tx\n",
 108               vsc_addr);
 109
 110         ret = i2c_read(vsc_addr, REVISION_ID_REG, 1, &rev_id, 1);
 111         if (ret < 0) {
 112                 printf("VSC:0x%x could not read REV_ID from device.\n",
 113                        vsc_addr);
 114                 return ret;
 115         }
 116
 117         if (rev_id != 0xab) {
 118                 printf("VSC: device at address 0x%x is not VSC3316/3308.\n",
 119                        vsc_addr);
 120                 return -ENODEV;
 121         }
 122
 123         ret = vsc_if_enable(vsc_addr);
 124         if (ret) {
 125                 printf("VSC:0x%x could not configured for 2-wire I/F.\n",
 126                        vsc_addr);
 127                 return ret;
 128         }
 129
 130         /* config connections - page 0x00 */
 131         i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, CONNECTION_CONFIG_PAGE);
 132
 133         /* Configure Global Input ISE */
 134         i2c_reg_write(vsc_addr, GLOBAL_INPUT_ISE1, 0);
 135         i2c_reg_write(vsc_addr, GLOBAL_INPUT_ISE2, 0);
 136
 137         /* Configure Tx/Rx Global Output PE1 */
 138         i2c_reg_write(vsc_addr, GLOBAL_OUTPUT_PE1, 0);
 139
 140         /* Configure Tx/Rx Global Output PE2 */
 141         i2c_reg_write(vsc_addr, GLOBAL_OUTPUT_PE2, 0);
 142
 143         /* Configure Tx/Rx Global Input GAIN */
 144         i2c_reg_write(vsc_addr, GLOBAL_INPUT_GAIN, 0x3F);
 145
 146         /* Setting Global Input LOS threshold value */
 147         i2c_reg_write(vsc_addr, GLOBAL_INPUT_LOS, 0xE0);
 148
 149         /* Setting Global output termination */
 150         i2c_reg_write(vsc_addr, GLOBAL_OUTPUT_TERMINATION, 0);
 151
 152         /* Configure Tx/Rx Global Output level */
 153         if (vsc_addr == VSC3308_TX_ADDRESS)
 154                 i2c_reg_write(vsc_addr, GLOBAL_OUTPUT_LEVEL, 4);
 155         else
 156                 i2c_reg_write(vsc_addr, GLOBAL_OUTPUT_LEVEL, 2);
 157
 158         /* Making crosspoint connections, by connecting required
 159          * input to output */
 160         for (i = 0; i < num_con ; i++)
 161                 i2c_reg_write(vsc_addr, con_arr[i][1], con_arr[i][0]);
 162
 163         /* input state - page 0x13 */
 164         i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, INPUT_STATE_REG);
 165         /* Turning off all the required input of the switch */
 166         for (i = 0; i < num_con; i++)
 167                 i2c_reg_write(vsc_addr, con_arr[i][0], 1);
 168
 169         /* only turn on specific Tx/Rx requested by the XFI erratum */
 170         if (vsc_addr == VSC3308_TX_ADDRESS) {
 171                 i2c_reg_write(vsc_addr, 2, 0);
 172                 i2c_reg_write(vsc_addr, 3, 0);
 173         } else {
 174                 i2c_reg_write(vsc_addr, 0, 0);
 175                 i2c_reg_write(vsc_addr, 1, 0);
 176         }
 177
 178         /* config output mode - page 0x23 */
 179         i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, OUTPUT_MODE_PAGE);
 180         /* Turn off the Output driver correspond to required output*/
 181         for (i = 0; i < num_con ; i++)
 182                 i2c_reg_write(vsc_addr,  con_arr[i][1], 1);
 183
 184         /* only turn on specific Tx/Rx requested by the XFI erratum */
 185         if (vsc_addr == VSC3308_TX_ADDRESS) {
 186                 i2c_reg_write(vsc_addr, 0, 0);
 187                 i2c_reg_write(vsc_addr, 1, 0);
 188         } else {
 189                 i2c_reg_write(vsc_addr, 3, 0);
 190                 i2c_reg_write(vsc_addr, 4, 0);
 191         }
 192
 193         /* configure global core control register, Turn on Global core power */
 194         i2c_reg_write(vsc_addr, GLOBAL_CORE_CNTRL, 0);
 195
 196         vsc_wp_config(vsc_addr);
 197
 198         return 0;
 199 }
 200 #endif
 201
 202 int vsc3308_config(unsigned int vsc_addr, const int8_t con_arr[][2],
 203                 unsigned int num_con)
 204 {
 205         unsigned int i;
 206         u8 rev_id = 0;
 207         int ret;
 208
 209         debug("VSC:Initializing VSC3308 at I2C address 0x%x"
 210                 " for Tx\n", vsc_addr);
 211
 212         ret = i2c_read(vsc_addr, REVISION_ID_REG, 1, &rev_id, 1);
 213         if (ret < 0) {
 214                 printf("VSC:0x%x could not read REV_ID from device.\n",
 215                         vsc_addr);
 216                 return ret;
 217         }
 218
 219         if (rev_id != 0xab) {
 220                 printf("VSC: device at address 0x%x is not VSC3316/3308.\n",
 221                         vsc_addr);
 222                 return -ENODEV;
 223         }
 224
 225         ret = vsc_if_enable(vsc_addr);
 226         if (ret) {
 227                 printf("VSC:0x%x could not configured for 2-wire I/F.\n",
 228                         vsc_addr);
 229                 return ret;
 230         }
 231
 232         /* config connections - page 0x00 */
 233         i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, CONNECTION_CONFIG_PAGE);
 234
 235         /* Making crosspoint connections, by connecting required
 236          * input to output */
 237         for (i = 0; i < num_con ; i++)
 238                 i2c_reg_write(vsc_addr, con_arr[i][1], con_arr[i][0]);
 239
 240         /*Configure Global Input ISE and gain */
 241         i2c_reg_write(vsc_addr, GLOBAL_INPUT_ISE1, 0x12);
 242         i2c_reg_write(vsc_addr, GLOBAL_INPUT_ISE2, 0x12);
 243
 244         /* input state - page 0x13 */
 245         i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, INPUT_STATE_REG);
 246         /* Turning ON the required input of the switch */
 247         for (i = 0; i < num_con ; i++)
 248                 i2c_reg_write(vsc_addr, con_arr[i][0], 0);
 249
 250         /* Setting Global Input LOS threshold value */
 251         i2c_reg_write(vsc_addr, GLOBAL_INPUT_LOS, 0x60);
 252
 253         /* config output mode - page 0x23 */
 254         i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, OUTPUT_MODE_PAGE);
 255         /* Turn ON the Output driver correspond to required output*/
 256         for (i = 0; i < num_con ; i++)
 257                 i2c_reg_write(vsc_addr,  con_arr[i][1], 0);
 258
 259         /* configure global core control register, Turn on Global core power */
 260         i2c_reg_write(vsc_addr, GLOBAL_CORE_CNTRL, 0);
 261
 262         vsc_wp_config(vsc_addr);
 263
 264         return 0;
 265 }
 266
 267 void vsc_wp_config(unsigned int vsc_addr)
 268 {
 269         debug("VSC:Configuring VSC at address:0x%x for WP\n", vsc_addr);
 270
 271         /* For new crosspoint configuration to occur, WP bit of
 272          * CORE_CONFIG_REG should be set 1 and then reset to 0 */
 273         i2c_reg_write(vsc_addr, CORE_CONFIG_REG, 0x01);
 274         i2c_reg_write(vsc_addr, CORE_CONFIG_REG, 0x0);
 275 }