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drm/amdgpu: Resolved offchip EEPROM I/O issue

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Updated target I2C address

Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: John Clements <john.clements@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
John Clements 2019-11-25 18:24:17 +08:00 committed by Alex Deucher
parent 3d3f9ba8c4
commit 8633f126bf
2 changed files with 13 additions and 5 deletions
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17
drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c
View File

@ -27,7 +27,8 @@
#include <linux/bits.h>
#include "smu_v11_0_i2c.h"
#define EEPROM_I2C_TARGET_ADDR 0xA0
#define EEPROM_I2C_TARGET_ADDR_ARCTURUS 0xA8
#define EEPROM_I2C_TARGET_ADDR_VEGA20 0xA0
/*
* The 2 macros bellow represent the actual size in bytes that
@ -83,7 +84,7 @@ static int __update_table_header(struct amdgpu_ras_eeprom_control *control,
{
int ret = 0;
struct i2c_msg msg = {
.addr = EEPROM_I2C_TARGET_ADDR,
.addr = 0,
.flags = 0,
.len = EEPROM_ADDRESS_SIZE + EEPROM_TABLE_HEADER_SIZE,
.buf = buff,
@ -93,6 +94,8 @@ static int __update_table_header(struct amdgpu_ras_eeprom_control *control,
*(uint16_t *)buff = EEPROM_HDR_START;
__encode_table_header_to_buff(&control->tbl_hdr, buff + EEPROM_ADDRESS_SIZE);
msg.addr = control->i2c_address;
ret = i2c_transfer(&control->eeprom_accessor, &msg, 1);
if (ret < 1)
DRM_ERROR("Failed to write EEPROM table header, ret:%d", ret);
@ -203,7 +206,7 @@ int amdgpu_ras_eeprom_init(struct amdgpu_ras_eeprom_control *control)
unsigned char buff[EEPROM_ADDRESS_SIZE + EEPROM_TABLE_HEADER_SIZE] = { 0 };
struct amdgpu_ras_eeprom_table_header *hdr = &control->tbl_hdr;
struct i2c_msg msg = {
.addr = EEPROM_I2C_TARGET_ADDR,
.addr = 0,
.flags = I2C_M_RD,
.len = EEPROM_ADDRESS_SIZE + EEPROM_TABLE_HEADER_SIZE,
.buf = buff,
@ -213,10 +216,12 @@ int amdgpu_ras_eeprom_init(struct amdgpu_ras_eeprom_control *control)
switch (adev->asic_type) {
case CHIP_VEGA20:
control->i2c_address = EEPROM_I2C_TARGET_ADDR_VEGA20;
ret = smu_v11_0_i2c_eeprom_control_init(&control->eeprom_accessor);
break;
case CHIP_ARCTURUS:
control->i2c_address = EEPROM_I2C_TARGET_ADDR_ARCTURUS;
ret = smu_i2c_eeprom_init(&adev->smu, &control->eeprom_accessor);
break;
@ -229,6 +234,8 @@ int amdgpu_ras_eeprom_init(struct amdgpu_ras_eeprom_control *control)
return ret;
}
msg.addr = control->i2c_address;
/* Read/Create table header from EEPROM address 0 */
ret = i2c_transfer(&control->eeprom_accessor, &msg, 1);
if (ret < 1) {
@ -408,8 +415,8 @@ int amdgpu_ras_eeprom_process_recods(struct amdgpu_ras_eeprom_control *control,
* Update bits 16,17 of EEPROM address in I2C address by setting them
* to bits 1,2 of Device address byte
*/
msg->addr = EEPROM_I2C_TARGET_ADDR |
((control->next_addr & EEPROM_ADDR_MSB_MASK) >> 15);
msg->addr = control->i2c_address |
((control->next_addr & EEPROM_ADDR_MSB_MASK) >> 15);
msg->flags = write ? 0 : I2C_M_RD;
msg->len = EEPROM_ADDRESS_SIZE + EEPROM_TABLE_RECORD_SIZE;
msg->buf = buff;

1
drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.h
View File

@ -50,6 +50,7 @@ struct amdgpu_ras_eeprom_control {
struct mutex tbl_mutex;
bool bus_locked;
uint32_t tbl_byte_sum;
uint16_t i2c_address; // 8-bit represented address
};
/*