diff options
Diffstat (limited to 'board/freescale/common/vsc3316_3308.c')
| -rw-r--r-- | board/freescale/common/vsc3316_3308.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/board/freescale/common/vsc3316_3308.c b/board/freescale/common/vsc3316_3308.c new file mode 100644 index 0000000000..786856597f --- /dev/null +++ b/board/freescale/common/vsc3316_3308.c @@ -0,0 +1,184 @@ +/* + * 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); +} |
