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u-boot/board/freescale/common/vsc3316_3308.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style 
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

275 lines
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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2012 Freescale Semiconductor, Inc.
*/
#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_GAIN 0x53
#define GLOBAL_INPUT_LOS 0x55
#define GLOBAL_OUTPUT_PE1 0x56
#define GLOBAL_OUTPUT_PE2 0x57
#define GLOBAL_OUTPUT_LEVEL 0x58
#define GLOBAL_OUTPUT_TERMINATION 0x5A
#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;
}
#ifdef CONFIG_SYS_FSL_B4860QDS_XFI_ERR
int vsc3308_config_adjust(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);
/* Configure Global Input ISE */
i2c_reg_write(vsc_addr, GLOBAL_INPUT_ISE1, 0);
i2c_reg_write(vsc_addr, GLOBAL_INPUT_ISE2, 0);
/* Configure Tx/Rx Global Output PE1 */
i2c_reg_write(vsc_addr, GLOBAL_OUTPUT_PE1, 0);
/* Configure Tx/Rx Global Output PE2 */
i2c_reg_write(vsc_addr, GLOBAL_OUTPUT_PE2, 0);
/* Configure Tx/Rx Global Input GAIN */
i2c_reg_write(vsc_addr, GLOBAL_INPUT_GAIN, 0x3F);
/* Setting Global Input LOS threshold value */
i2c_reg_write(vsc_addr, GLOBAL_INPUT_LOS, 0xE0);
/* Setting Global output termination */
i2c_reg_write(vsc_addr, GLOBAL_OUTPUT_TERMINATION, 0);
/* Configure Tx/Rx Global Output level */
if (vsc_addr == VSC3308_TX_ADDRESS)
i2c_reg_write(vsc_addr, GLOBAL_OUTPUT_LEVEL, 4);
else
i2c_reg_write(vsc_addr, GLOBAL_OUTPUT_LEVEL, 2);
/* 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);
/* Turning off all the required input of the switch */
for (i = 0; i < num_con; i++)
i2c_reg_write(vsc_addr, con_arr[i][0], 1);
/* only turn on specific Tx/Rx requested by the XFI erratum */
if (vsc_addr == VSC3308_TX_ADDRESS) {
i2c_reg_write(vsc_addr, 2, 0);
i2c_reg_write(vsc_addr, 3, 0);
} else {
i2c_reg_write(vsc_addr, 0, 0);
i2c_reg_write(vsc_addr, 1, 0);
}
/* config output mode - page 0x23 */
i2c_reg_write(vsc_addr, CURRENT_PAGE_REGISTER, OUTPUT_MODE_PAGE);
/* Turn off the Output driver correspond to required output*/
for (i = 0; i < num_con ; i++)
i2c_reg_write(vsc_addr, con_arr[i][1], 1);
/* only turn on specific Tx/Rx requested by the XFI erratum */
if (vsc_addr == VSC3308_TX_ADDRESS) {
i2c_reg_write(vsc_addr, 0, 0);
i2c_reg_write(vsc_addr, 1, 0);
} else {
i2c_reg_write(vsc_addr, 3, 0);
i2c_reg_write(vsc_addr, 4, 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;
}
#endif
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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