diff options
| author | Luben Tuikov <luben.tuikov@amd.com> | 2021-02-01 21:38:54 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-07-01 07:24:40 +0300 |
| commit | 025a64a58792523ffbae042ef0cf54de9c6a27f1 (patch) | |
| tree | cb9e5f2a7add542ea1c846158ab4f7ec88f12098 /drivers/gpu/drm/amd/amdgpu/amdgpu_eeprom.h | |
| parent | 93ade343bbadd73999324dcc66c933e398e39818 (diff) | |
| download | linux-025a64a58792523ffbae042ef0cf54de9c6a27f1.tar.xz | |
drm/amdgpu: I2C EEPROM full memory addressing
* "eeprom_addr" is now 32-bit wide.
* Remove "slave_addr" from the I2C EEPROM driver
interface. The I2C EEPROM Device Type Identifier
is fixed at 1010b, and the rest of the bits
of the Device Address Byte/Device Select Code,
are memory address bits, where the first three
of those bits are the hardware selection bits.
All this is now a 19-bit address and passed
as "eeprom_addr". This abstracts the I2C bus
for EEPROM devices for this I2C EEPROM driver.
Now clients only pass the 19-bit EEPROM memory
address, to the I2C EEPROM driver, as the 32-bit
"eeprom_addr", from which they want to read from
or write to.
Cc: Jean Delvare <jdelvare@suse.de>
Cc: Alexander Deucher <Alexander.Deucher@amd.com>
Cc: Andrey Grodzovsky <Andrey.Grodzovsky@amd.com>
Cc: Lijo Lazar <Lijo.Lazar@amd.com>
Cc: Stanley Yang <Stanley.Yang@amd.com>
Cc: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Luben Tuikov <luben.tuikov@amd.com>
Acked-by: Alexander Deucher <Alexander.Deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_eeprom.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_eeprom.h | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_eeprom.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_eeprom.h index 9301e5678910..417472be2712 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_eeprom.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_eeprom.h @@ -26,9 +26,7 @@ #include <linux/i2c.h> -int amdgpu_eeprom_xfer(struct i2c_adapter *i2c_adap, - u16 slave_addr, u16 eeprom_addr, +int amdgpu_eeprom_xfer(struct i2c_adapter *i2c_adap, u32 eeprom_addr, u8 *eeprom_buf, u16 bytes, bool read); - #endif |