u-boot/board/freescale/common/vsc3316_3308.c
Shaohui Xie 7d0d355fee powerpc/common/vsc3316: remove const from vsc3316_config parameter define
Since the parameters need to be modified according to different Serdes
protocols at runtime, the const will block this. Also remove const from
arrays define used by vsc3316_config.

Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Acked-by: York Sun <yorksun@freescale.com>
2013-08-20 10:46:26 -07:00

168 lines
4.5 KiB
C

/*
* Copyright 2012 Freescale Semiconductor, Inc.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#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, 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);
}