kernel.git/drivers/platform/x86/mlx-platform.c, branch linux-6.4.y

platform: mellanox: Fix order in exit flow

2023-08-16T16:32:31Z

commit 8e3938cff0191c810b2abd827313c090fe09d166 upstream. Fix exit flow order: call mlxplat_post_exit() after mlxplat_i2c_main_exit() in order to unregister main i2c driver before to "mlxplat" driver. Fixes: 0170f616f496 ("platform: mellanox: Split initialization procedure") Signed-off-by: Vadim Pasternak Reviewed-by: Michael Shych Link: https://lore.kernel.org/r/20230813083735.39090-2-vadimp@nvidia.com Signed-off-by: Hans de Goede Signed-off-by: Greg Kroah-Hartman

platform: mellanox: mlx-platform: Modify graceful shutdown callback and power down mask

2023-08-16T16:32:31Z

commit 9f8ccdb5088bd03062d9ad9c0f6abf600cbed8e8 upstream. Use kernel_power_off() instead of kernel_halt() to pass through machine_power_off() -> pm_power_off(), otherwise axillary power does not go off. Change "power down" bitmask. Fixes: dd635e33b5c9 ("platform: mellanox: Introduce support of new Nvidia L1 switch") Signed-off-by: Vadim Pasternak Reviewed-by: Michael Shych Link: https://lore.kernel.org/r/20230813083735.39090-4-vadimp@nvidia.com Signed-off-by: Hans de Goede Signed-off-by: Greg Kroah-Hartman

platform: mellanox: mlx-platform: Fix signals polarity and latch mask

2023-08-16T16:32:31Z

commit 3c91d7e8c64f75c63da3565d16d5780320bd5d76 upstream. Change polarity of chassis health and power signals and fix latch reset mask for L1 switch. Fixes: dd635e33b5c9 ("platform: mellanox: Introduce support of new Nvidia L1 switch") Signed-off-by: Vadim Pasternak Reviewed-by: Michael Shych Link: https://lore.kernel.org/r/20230813083735.39090-3-vadimp@nvidia.com Signed-off-by: Hans de Goede Signed-off-by: Greg Kroah-Hartman

platform: mellanox: Change register offset addresses

2023-08-16T16:32:31Z

commit d66a8aab7dc36c975bbaa6aa74cf7445878e7c69 upstream. Move debug register offsets to different location due to hardware changes. Fixes: dd635e33b5c9 ("platform: mellanox: Introduce support of new Nvidia L1 switch") Signed-off-by: Vadim Pasternak Reviewed-by: Michael Shych Link: https://lore.kernel.org/r/20230813083735.39090-5-vadimp@nvidia.com Signed-off-by: Hans de Goede Signed-off-by: Greg Kroah-Hartman

platform: mellanox: mlx-platform: Initialize shift variable to 0

2023-03-07T11:08:30Z

Initialize shift variable in mlxplat_mlxcpld_verify_bus_topology() to 0 to avoid the following compile error: drivers/platform/x86/mlx-platform.c:6013 mlxplat_mlxcpld_verify_bus_topology() error: uninitialized symbol 'shift'. Fixes: 50b823fdd357 ("platform: mellanox: mlx-platform: Move bus shift assignment out of the loop") Cc: Vadim Pasternak Cc: Michael Shych Signed-off-by: Hans de Goede Link: https://lore.kernel.org/r/20230307105842.286118-1-hdegoede@redhat.com

platform: mellanox: mlx-platform: Move bus shift assignment out of the loop

2023-02-13T11:07:50Z

Move assignment of bus shift setting out of the loop to avoid redundant operation. Signed-off-by: Vadim Pasternak Reviewed-by: Michael Shych Link: https://lore.kernel.org/r/20230208063331.15560-13-vadimp@nvidia.com Signed-off-by: Hans de Goede

platform: mellanox: mlx-platform: Add mux selection register to regmap

2023-02-13T11:07:50Z

Extend writeable, readable, volatile registers of the 'regmap' object with for I2C mux selector registers. The motivation is to pass this object extended with selector registers to I2C mux driver working over ‘regmap’. Signed-off-by: Vadim Pasternak Reviewed-by: Michael Shych Link: https://lore.kernel.org/r/20230208063331.15560-12-vadimp@nvidia.com Signed-off-by: Hans de Goede

platform: mellanox: Extend all systems with I2C notification callback

2023-02-13T11:07:50Z

Motivation is to provide synchronization between I2C main bus and other platform drivers using this notification callback. Signed-off-by: Vadim Pasternak Reviewed-by: Michael Shych Link: https://lore.kernel.org/r/20230208063331.15560-9-vadimp@nvidia.com Signed-off-by: Hans de Goede

platform: mellanox: Split logic in init and exit flow

2023-02-13T11:07:49Z

Split logic in mlxplat_init()/mlxplat_exit() routines. Separate initialization of I2C infrastructure and others platform drivers. Motivation is to provide synchronization between I2C bus and mux drivers and other drivers using this infrastructure. I2C main bus and MUX busses are implemented in FPGA logic. On some new systems the numbers allocated for these busses could be variable depending on order of initialization of I2C native busses. Since bus numbers are passed to some other platform drivers during initialization flow, it is necessary to synchronize completion of I2C infrastructure drivers and activation of rest of drivers. Thus initialization flow will be performed in synchronized order. Signed-off-by: Vadim Pasternak Reviewed-by: Michael Shych Link: https://lore.kernel.org/r/20230208063331.15560-8-vadimp@nvidia.com Signed-off-by: Hans de Goede

platform: mellanox: Split initialization procedure

2023-02-10T16:43:33Z

Split mlxplat_init() into two by adding mlxplat_pre_init(). Motivation is to prepare 'mlx-platform' driver to support systems equipped PCIe based programming logic device. Such systems are supposed to use different system resources, thus this commit separates resources allocation related code. Signed-off-by: Vadim Pasternak Reviewed-by: Michael Shych Link: https://lore.kernel.org/r/20230208063331.15560-7-vadimp@nvidia.com Signed-off-by: Hans de Goede