board/freescale/common/vsc3316_3308.c

   1 /*
   2  * Copyright 2012 Freescale Semiconductor, Inc.
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include "vsc3316_3308.h"
   8
   9 #define REVISION_ID_REG         0x7E
  10 #define INTERFACE_MODE_REG              0x79
  11 #define CURRENT_PAGE_REGISTER           0x7F
  12 #define CONNECTION_CONFIG_PAGE          0x00
  13 #define INPUT_STATE_REG         0x13
  14 #define GLOBAL_INPUT_ISE1               0x51
  15 #define GLOBAL_INPUT_ISE2               0x52
  16 #define GLOBAL_INPUT_GAIN               0x53
  17 #define GLOBAL_INPUT_LOS                0x55
  18 #define GLOBAL_OUTPUT_PE1               0x56
  19 #define GLOBAL_OUTPUT_PE2               0x57
  20 #define GLOBAL_OUTPUT_LEVEL             0x58
  21 #define GLOBAL_OUTPUT_TERMINATION       0x5A
  22 #define GLOBAL_CORE_CNTRL               0x5D
  23 #define OUTPUT_MODE_PAGE                0x23
  24 #define CORE_CONTROL_PAGE               0x25
  25 #define CORE_CONFIG_REG         0x75
  26
  27 int vsc_if_enable(unsigned int vsc_addr)
  28 {
  29         u8 data;
  30
  31         debug("VSC:Configuring VSC at I2C address 0x%2x"
  32                         " for 2-wire interface\n", vsc_addr);
  33
  34         /* enable 2-wire Serial InterFace (I2C) */
  35         data = 0x02;
  36         return i2c_write(vsc_addr, INTERFACE_MODE_REG, 1, &data, 1);
  37 }
  38
  39 int vsc3316_config(unsigned int vsc_addr, int8_t con_arr[][2],
  40                 unsigned int num_con)
  41 {
  42         unsigned int i;
  43         u8 rev_id = 0;
  44         int ret;
  45
  46         debug("VSC:Initializing VSC3316 at I2C address 0x%2x"
  47                 " for Tx\n", vsc_addr);
  48
  49         ret = i2c_read(vsc_addr, REVISION_ID_REG, 1, &rev_id, 1);
  50         if (ret < 0) {
  51                 printf("VSC:0x%x could not read REV_ID from device.\n",
  52                         vsc_addr);
  53                 return ret;
  54         }
  55
  56         if (rev_id != 0xab) {
  57                 printf("VSC: device at address 0x%x is not VSC3316/3308.\n",
  58                         vsc_addr);
  59                 return -ENODEV;
  60         }
  61
  62         ret = vsc_if_enable(vsc_addr);
  63         if (ret) {
  64                 printf("VSC:0x%x could not configured for 2-wire I/F.\n",
  65                         vsc_addr);
  66                 return ret;
  67         }
  68
  69         /* config connections - page 0x00 */
  70         i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, CONNECTION_CONFIG_PAGE);
  71
  72         /* Making crosspoint connections, by connecting required
  73          * input to output */
  74         for (i = 0; i < num_con ; i++)
  75                 i2c_reg_write(vsc_addr, con_arr[i][1], con_arr[i][0]);
  76
  77         /* input state - page 0x13 */
  78         i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, INPUT_STATE_REG);
  79         /* Configuring the required input of the switch */
  80         for (i = 0; i < num_con ; i++)
  81                 i2c_reg_write(vsc_addr, con_arr[i][0], 0x80);
  82
  83         /* Setting Global Input LOS threshold value */
  84         i2c_reg_write(vsc_addr, GLOBAL_INPUT_LOS, 0x60);
  85
  86         /* config output mode - page 0x23 */
  87         i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, OUTPUT_MODE_PAGE);
  88         /* Turn ON the Output driver correspond to required output*/
  89         for (i = 0; i < num_con ; i++)
  90                 i2c_reg_write(vsc_addr,  con_arr[i][1], 0);
  91
  92         /* configure global core control register, Turn on Global core power */
  93         i2c_reg_write(vsc_addr, GLOBAL_CORE_CNTRL, 0);
  94
  95         vsc_wp_config(vsc_addr);
  96
  97         return 0;
  98 }
  99
 100 #ifdef CONFIG_SYS_FSL_B4860QDS_XFI_ERR
 101 int vsc3308_config_adjust(unsigned int vsc_addr, const int8_t con_arr[][2],
 102                 unsigned int num_con)
 103 {
 104         unsigned int i;
 105         u8 rev_id = 0;
 106         int ret;
 107
 108         debug("VSC:Initializing VSC3308 at I2C address 0x%x for Tx\n",
 109               vsc_addr);
 110
 111         ret = i2c_read(vsc_addr, REVISION_ID_REG, 1, &rev_id, 1);
 112         if (ret < 0) {
 113                 printf("VSC:0x%x could not read REV_ID from device.\n",
 114                        vsc_addr);
 115                 return ret;
 116         }
 117
 118         if (rev_id != 0xab) {
 119                 printf("VSC: device at address 0x%x is not VSC3316/3308.\n",
 120                        vsc_addr);
 121                 return -ENODEV;
 122         }
 123
 124         ret = vsc_if_enable(vsc_addr);
 125         if (ret) {
 126                 printf("VSC:0x%x could not configured for 2-wire I/F.\n",
 127                        vsc_addr);
 128                 return ret;
 129         }
 130
 131         /* config connections - page 0x00 */
 132         i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, CONNECTION_CONFIG_PAGE);
 133
 134         /* Configure Global Input ISE */
 135         i2c_reg_write(vsc_addr, GLOBAL_INPUT_ISE1, 0);
 136         i2c_reg_write(vsc_addr, GLOBAL_INPUT_ISE2, 0);
 137
 138         /* Configure Tx/Rx Global Output PE1 */
 139         i2c_reg_write(vsc_addr, GLOBAL_OUTPUT_PE1, 0);
 140
 141         /* Configure Tx/Rx Global Output PE2 */
 142         i2c_reg_write(vsc_addr, GLOBAL_OUTPUT_PE2, 0);
 143
 144         /* Configure Tx/Rx Global Input GAIN */
 145         i2c_reg_write(vsc_addr, GLOBAL_INPUT_GAIN, 0x3F);
 146
 147         /* Setting Global Input LOS threshold value */
 148         i2c_reg_write(vsc_addr, GLOBAL_INPUT_LOS, 0xE0);
 149
 150         /* Setting Global output termination */
 151         i2c_reg_write(vsc_addr, GLOBAL_OUTPUT_TERMINATION, 0);
 152
 153         /* Configure Tx/Rx Global Output level */
 154         if (vsc_addr == VSC3308_TX_ADDRESS)
 155                 i2c_reg_write(vsc_addr, GLOBAL_OUTPUT_LEVEL, 4);
 156         else
 157                 i2c_reg_write(vsc_addr, GLOBAL_OUTPUT_LEVEL, 2);
 158
 159         /* Making crosspoint connections, by connecting required
 160          * input to output */
 161         for (i = 0; i < num_con ; i++)
 162                 i2c_reg_write(vsc_addr, con_arr[i][1], con_arr[i][0]);
 163
 164         /* input state - page 0x13 */
 165         i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, INPUT_STATE_REG);
 166         /* Turning off all the required input of the switch */
 167         for (i = 0; i < num_con; i++)
 168                 i2c_reg_write(vsc_addr, con_arr[i][0], 1);
 169
 170         /* only turn on specific Tx/Rx requested by the XFI erratum */
 171         if (vsc_addr == VSC3308_TX_ADDRESS) {
 172                 i2c_reg_write(vsc_addr, 2, 0);
 173                 i2c_reg_write(vsc_addr, 3, 0);
 174         } else {
 175                 i2c_reg_write(vsc_addr, 0, 0);
 176                 i2c_reg_write(vsc_addr, 1, 0);
 177         }
 178
 179         /* config output mode - page 0x23 */
 180         i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, OUTPUT_MODE_PAGE);
 181         /* Turn off the Output driver correspond to required output*/
 182         for (i = 0; i < num_con ; i++)
 183                 i2c_reg_write(vsc_addr,  con_arr[i][1], 1);
 184
 185         /* only turn on specific Tx/Rx requested by the XFI erratum */
 186         if (vsc_addr == VSC3308_TX_ADDRESS) {
 187                 i2c_reg_write(vsc_addr, 0, 0);
 188                 i2c_reg_write(vsc_addr, 1, 0);
 189         } else {
 190                 i2c_reg_write(vsc_addr, 3, 0);
 191                 i2c_reg_write(vsc_addr, 4, 0);
 192         }
 193
 194         /* configure global core control register, Turn on Global core power */
 195         i2c_reg_write(vsc_addr, GLOBAL_CORE_CNTRL, 0);
 196
 197         vsc_wp_config(vsc_addr);
 198
 199         return 0;
 200 }
 201 #endif
 202
 203 int vsc3308_config(unsigned int vsc_addr, const int8_t con_arr[][2],
 204                 unsigned int num_con)
 205 {
 206         unsigned int i;
 207         u8 rev_id = 0;
 208         int ret;
 209
 210         debug("VSC:Initializing VSC3308 at I2C address 0x%x"
 211                 " for Tx\n", vsc_addr);
 212
 213         ret = i2c_read(vsc_addr, REVISION_ID_REG, 1, &rev_id, 1);
 214         if (ret < 0) {
 215                 printf("VSC:0x%x could not read REV_ID from device.\n",
 216                         vsc_addr);
 217                 return ret;
 218         }
 219
 220         if (rev_id != 0xab) {
 221                 printf("VSC: device at address 0x%x is not VSC3316/3308.\n",
 222                         vsc_addr);
 223                 return -ENODEV;
 224         }
 225
 226         ret = vsc_if_enable(vsc_addr);
 227         if (ret) {
 228                 printf("VSC:0x%x could not configured for 2-wire I/F.\n",
 229                         vsc_addr);
 230                 return ret;
 231         }
 232
 233         /* config connections - page 0x00 */
 234         i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, CONNECTION_CONFIG_PAGE);
 235
 236         /* Making crosspoint connections, by connecting required
 237          * input to output */
 238         for (i = 0; i < num_con ; i++)
 239                 i2c_reg_write(vsc_addr, con_arr[i][1], con_arr[i][0]);
 240
 241         /*Configure Global Input ISE and gain */
 242         i2c_reg_write(vsc_addr, GLOBAL_INPUT_ISE1, 0x12);
 243         i2c_reg_write(vsc_addr, GLOBAL_INPUT_ISE2, 0x12);
 244
 245         /* input state - page 0x13 */
 246         i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, INPUT_STATE_REG);
 247         /* Turning ON the required input of the switch */
 248         for (i = 0; i < num_con ; i++)
 249                 i2c_reg_write(vsc_addr, con_arr[i][0], 0);
 250
 251         /* Setting Global Input LOS threshold value */
 252         i2c_reg_write(vsc_addr, GLOBAL_INPUT_LOS, 0x60);
 253
 254         /* config output mode - page 0x23 */
 255         i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, OUTPUT_MODE_PAGE);
 256         /* Turn ON the Output driver correspond to required output*/
 257         for (i = 0; i < num_con ; i++)
 258                 i2c_reg_write(vsc_addr,  con_arr[i][1], 0);
 259
 260         /* configure global core control register, Turn on Global core power */
 261         i2c_reg_write(vsc_addr, GLOBAL_CORE_CNTRL, 0);
 262
 263         vsc_wp_config(vsc_addr);
 264
 265         return 0;
 266 }
 267
 268 void vsc_wp_config(unsigned int vsc_addr)
 269 {
 270         debug("VSC:Configuring VSC at address:0x%x for WP\n", vsc_addr);
 271
 272         /* For new crosspoint configuration to occur, WP bit of
 273          * CORE_CONFIG_REG should be set 1 and then reset to 0 */
 274         i2c_reg_write(vsc_addr, CORE_CONFIG_REG, 0x01);
 275         i2c_reg_write(vsc_addr, CORE_CONFIG_REG, 0x0);
 276 }