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[0/4] i2c: Remove I2C_CLASS_SPD

Message ID 90a0786f-136b-4097-9def-8d52e9e5d3cc@gmail.com
Headers show
Series i2c: Remove I2C_CLASS_SPD | expand

Message

Heiner Kallweit April 15, 2024, 8:47 p.m. UTC 
Only remaining client driver supporting I2C_CLASS_SPD is jc42. This
type of thermal sensor can be found on several DDR3/DDR4 modules.
i2c_register_spd() instantiates also such thermal sensor i2c devices.
Since 71b494e043d2 ("i2c: i801: Call i2c_register_spd for muxed child
segments") i2c_register_spd() is called also for the remaining use case,
systems with muxed SMBUS segments for SPD EEPROMs. i801 was the last
bus driver supporting I2C_CLASS_SPD.
Therefore I2C_CLASS_SPD class-based instantiation isn't needed any longer,
and we can remove it completely.

I propose to handle this series via the I2C tree.

Heiner Kallweit (4):
  i2c: i801: Remove usage of I2C_CLASS_SPD
  i2c: mux: gpio: remove support for class-based device instantiation
  hwmon: jc42: Remove I2C_CLASS_SPD support
  i2c: Remove I2C_CLASS_SPD

 drivers/hwmon/jc42.c                       | 2 +-
 drivers/i2c/busses/i2c-i801.c              | 4 ----
 drivers/i2c/muxes/i2c-mux-gpio.c           | 3 +--
 include/linux/i2c.h                        | 1 -
 include/linux/platform_data/i2c-mux-gpio.h | 2 --
 5 files changed, 2 insertions(+), 10 deletions(-)

Comments

Andi Shyti April 16, 2024, 10:46 p.m. UTC | #1 
Hi

On Mon, 15 Apr 2024 22:47:04 +0200, Heiner Kallweit wrote:
> Only remaining client driver supporting I2C_CLASS_SPD is jc42. This
> type of thermal sensor can be found on several DDR3/DDR4 modules.
> i2c_register_spd() instantiates also such thermal sensor i2c devices.
> Since 71b494e043d2 ("i2c: i801: Call i2c_register_spd for muxed child
> segments") i2c_register_spd() is called also for the remaining use case,
> systems with muxed SMBUS segments for SPD EEPROMs. i801 was the last
> bus driver supporting I2C_CLASS_SPD.
> Therefore I2C_CLASS_SPD class-based instantiation isn't needed any longer,
> and we can remove it completely.
> 
> [...]

Applied to i2c/i2c-host on

git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux.git

Thank you,
Andi

Patches applied
===============
[1/4] i2c: i801: Remove usage of I2C_CLASS_SPD
      commit: 8bae811210b77e2cd1b62d9fb20d2e6126103135
[2/4] i2c: mux: gpio: remove support for class-based device instantiation
      commit: 1dfb192a687fded0f5e92518024baa673c297885
[4/4] i2c: Remove I2C_CLASS_SPD
      commit: f7ece6320f6f028873649b9aa836c5bc5abf2cb3