diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c | 31 |
1 files changed, 14 insertions, 17 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c index 9dc3b2d88176..dc44c946a244 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c @@ -114,27 +114,24 @@ static bool __get_eeprom_i2c_addr_arct(struct amdgpu_device *adev, static bool __get_eeprom_i2c_addr(struct amdgpu_device *adev, struct amdgpu_ras_eeprom_control *control) { - uint8_t ras_rom_i2c_slave_addr; + u8 i2c_addr; if (!control) return false; - control->i2c_address = 0; - - if (amdgpu_atomfirmware_ras_rom_addr(adev, &ras_rom_i2c_slave_addr)) - { - switch (ras_rom_i2c_slave_addr) { - case 0xA0: - control->i2c_address = 0; - return true; - case 0xA8: - control->i2c_address = 0x40000; - return true; - default: - dev_warn(adev->dev, "RAS EEPROM I2C slave address %02x not supported", - ras_rom_i2c_slave_addr); - return false; - } + if (amdgpu_atomfirmware_ras_rom_addr(adev, &i2c_addr)) { + /* The address given by VBIOS is an 8-bit, wire-format + * address, i.e. the most significant byte. + * + * Normalize it to a 19-bit EEPROM address. Remove the + * device type identifier and make it a 7-bit address; + * then make it a 19-bit EEPROM address. See top of + * amdgpu_eeprom.c. + */ + i2c_addr = (i2c_addr & 0x0F) >> 1; + control->i2c_address = ((u32) i2c_addr) << 16; + + return true; } switch (adev->asic_type) { |