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- /*
- * Copyright 2012 Freescale Semiconductor, Inc.
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
- #include "vsc3316_3308.h"
- #define REVISION_ID_REG 0x7E
- #define INTERFACE_MODE_REG 0x79
- #define CURRENT_PAGE_REGISTER 0x7F
- #define CONNECTION_CONFIG_PAGE 0x00
- #define INPUT_STATE_REG 0x13
- #define GLOBAL_INPUT_ISE1 0x51
- #define GLOBAL_INPUT_ISE2 0x52
- #define GLOBAL_INPUT_LOS 0x55
- #define GLOBAL_CORE_CNTRL 0x5D
- #define OUTPUT_MODE_PAGE 0x23
- #define CORE_CONTROL_PAGE 0x25
- #define CORE_CONFIG_REG 0x75
- int vsc_if_enable(unsigned int vsc_addr)
- {
- u8 data;
- debug("VSC:Configuring VSC at I2C address 0x%2x"
- " for 2-wire interface\n", vsc_addr);
- /* enable 2-wire Serial InterFace (I2C) */
- data = 0x02;
- return i2c_write(vsc_addr, INTERFACE_MODE_REG, 1, &data, 1);
- }
- int vsc3316_config(unsigned int vsc_addr, const int8_t con_arr[][2],
- unsigned int num_con)
- {
- unsigned int i;
- u8 rev_id = 0;
- int ret;
- debug("VSC:Initializing VSC3316 at I2C address 0x%2x"
- " for Tx\n", vsc_addr);
- ret = i2c_read(vsc_addr, REVISION_ID_REG, 1, &rev_id, 1);
- if (ret < 0) {
- printf("VSC:0x%x could not read REV_ID from device.\n",
- vsc_addr);
- return ret;
- }
- if (rev_id != 0xab) {
- printf("VSC: device at address 0x%x is not VSC3316/3308.\n",
- vsc_addr);
- return -ENODEV;
- }
- ret = vsc_if_enable(vsc_addr);
- if (ret) {
- printf("VSC:0x%x could not configured for 2-wire I/F.\n",
- vsc_addr);
- return ret;
- }
- /* config connections - page 0x00 */
- i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, CONNECTION_CONFIG_PAGE);
- /* Making crosspoint connections, by connecting required
- * input to output */
- for (i = 0; i < num_con ; i++)
- i2c_reg_write(vsc_addr, con_arr[i][1], con_arr[i][0]);
- /* input state - page 0x13 */
- i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, INPUT_STATE_REG);
- /* Configuring the required input of the switch */
- for (i = 0; i < num_con ; i++)
- i2c_reg_write(vsc_addr, con_arr[i][0], 0x80);
- /* Setting Global Input LOS threshold value */
- i2c_reg_write(vsc_addr, GLOBAL_INPUT_LOS, 0x60);
- /* config output mode - page 0x23 */
- i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, OUTPUT_MODE_PAGE);
- /* Turn ON the Output driver correspond to required output*/
- for (i = 0; i < num_con ; i++)
- i2c_reg_write(vsc_addr, con_arr[i][1], 0);
- /* configure global core control register, Turn on Global core power */
- i2c_reg_write(vsc_addr, GLOBAL_CORE_CNTRL, 0);
- vsc_wp_config(vsc_addr);
- return 0;
- }
- int vsc3308_config(unsigned int vsc_addr, const int8_t con_arr[][2],
- unsigned int num_con)
- {
- unsigned int i;
- u8 rev_id = 0;
- int ret;
- debug("VSC:Initializing VSC3308 at I2C address 0x%x"
- " for Tx\n", vsc_addr);
- ret = i2c_read(vsc_addr, REVISION_ID_REG, 1, &rev_id, 1);
- if (ret < 0) {
- printf("VSC:0x%x could not read REV_ID from device.\n",
- vsc_addr);
- return ret;
- }
- if (rev_id != 0xab) {
- printf("VSC: device at address 0x%x is not VSC3316/3308.\n",
- vsc_addr);
- return -ENODEV;
- }
- ret = vsc_if_enable(vsc_addr);
- if (ret) {
- printf("VSC:0x%x could not configured for 2-wire I/F.\n",
- vsc_addr);
- return ret;
- }
- /* config connections - page 0x00 */
- i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, CONNECTION_CONFIG_PAGE);
- /* Making crosspoint connections, by connecting required
- * input to output */
- for (i = 0; i < num_con ; i++)
- i2c_reg_write(vsc_addr, con_arr[i][1], con_arr[i][0]);
- /*Configure Global Input ISE and gain */
- i2c_reg_write(vsc_addr, GLOBAL_INPUT_ISE1, 0x12);
- i2c_reg_write(vsc_addr, GLOBAL_INPUT_ISE2, 0x12);
- /* input state - page 0x13 */
- i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, INPUT_STATE_REG);
- /* Turning ON the required input of the switch */
- for (i = 0; i < num_con ; i++)
- i2c_reg_write(vsc_addr, con_arr[i][0], 0);
- /* Setting Global Input LOS threshold value */
- i2c_reg_write(vsc_addr, GLOBAL_INPUT_LOS, 0x60);
- /* config output mode - page 0x23 */
- i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, OUTPUT_MODE_PAGE);
- /* Turn ON the Output driver correspond to required output*/
- for (i = 0; i < num_con ; i++)
- i2c_reg_write(vsc_addr, con_arr[i][1], 0);
- /* configure global core control register, Turn on Global core power */
- i2c_reg_write(vsc_addr, GLOBAL_CORE_CNTRL, 0);
- vsc_wp_config(vsc_addr);
- return 0;
- }
- void vsc_wp_config(unsigned int vsc_addr)
- {
- debug("VSC:Configuring VSC at address:0x%x for WP\n", vsc_addr);
- /* For new crosspoint configuration to occur, WP bit of
- * CORE_CONFIG_REG should be set 1 and then reset to 0 */
- i2c_reg_write(vsc_addr, CORE_CONFIG_REG, 0x01);
- i2c_reg_write(vsc_addr, CORE_CONFIG_REG, 0x0);
- }
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