From 025a64a58792523ffbae042ef0cf54de9c6a27f1 Mon Sep 17 00:00:00 2001 From: Luben Tuikov Date: Mon, 1 Feb 2021 13:38:54 -0500 Subject: 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 Cc: Alexander Deucher Cc: Andrey Grodzovsky Cc: Lijo Lazar Cc: Stanley Yang Cc: Hawking Zhang Signed-off-by: Luben Tuikov Acked-by: Alexander Deucher Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_eeprom.h | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_eeprom.h') 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 -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 -- cgit v1.2.3