[00/12] Add support for X86/ACPI camera sensor/PMIC setup with clk and regulator platform data

Message

Hans de Goede Oct. 8, 2021, 4:21 p.m. UTC

Hi All,

This patch series is a rework/rewrite of Daniel Scally's earlier
attempts at adding support for camera sensor connected to a
TPS68470 PMIC on x86/ACPI devices.

The clk and regulator frameworks expect clk/regulator consumer-devices
to have info about the consumed clks/regulators described in the device's
fw_node, but on ACPI this info is missing.

This series worksaround this by providing platform_data with the info to
the TPS68470 clk/regulator MFD cells.

Patches 1 - 3 deal with a probe-ordering problem this introduces, since the
lookups are only registered when the provider-driver binds, trying to get
these clks/regulators before then results in a -ENOENT error for clks and
a dummy regulator for regulators. See the patches for more details.

Patch 4 adds a header file which adds tps68470_clk_platform_data and
tps68470_regulator_platform_data structs. The futher patches depend on
this new header file.

Patch 5 + 6 add the TPS68470 clk and regulator drivers

Patches 7 - 12 Modify the INT3472 driver which instantiates the MFD cells to
provide the necessary platform-data.

Assuming this series is acceptable to everyone, we need to talk about how
to merge this.

Rafael, can you provide an immutable branch with
"[PATCH 01/12] ACPI: Add has_unmet_acpi_deps() helper function"
on there? Then the media subsys-maintaines can merge that and then
merge patch 2 + 3 on top.

For "[PATCH 04/12] platform_data: Add linux/platform_data/tps68470.h file",
which all further patches depend on I plan to provide an immutable branch
myself (once it has been reviewed), which the clk / regulator maintainers
can then merge before merging the clk / regulator driver which depends on
this.

Regards,

Hans


Daniel Scally (1):
  platform/x86: int3472: Enable I2c daisy chain

Hans de Goede (11):
  ACPI: Add has_unmet_acpi_deps() helper function
  media: i2c: ov8865: Add an has_unmet_acpi_deps() check
  media: i2c: ov5693: Add an has_unmet_acpi_deps() check
  platform_data: Add linux/platform_data/tps68470.h file
  regulator: Introduce tps68470-regulator driver
  clk: Introduce clk-tps68470 driver
  platform/x86: int3472: Split into 2 drivers
  platform/x86: int3472: Add get_sensor_adev_and_name() helper
  platform/x86: int3472: Pass tps68470_clk_platform_data to the
    tps68470-regulator MFD-cell
  platform/x86: int3472: Pass tps68470_regulator_platform_data to the
    tps68470-regulator MFD-cell
  platform/x86: int3472: Call acpi_dev_clear_dependencies() on
    successful probe

 drivers/clk/Kconfig                           |   6 +
 drivers/clk/Makefile                          |   1 +
 drivers/clk/clk-tps68470.c                    | 257 ++++++++++++++++++
 drivers/media/i2c/ov5693.c                    |   3 +
 drivers/media/i2c/ov8865.c                    |   3 +
 drivers/platform/x86/intel/int3472/Makefile   |   9 +-
 ...lk_and_regulator.c => clk_and_regulator.c} |   2 +-
 drivers/platform/x86/intel/int3472/common.c   |  82 ++++++
 .../{intel_skl_int3472_common.h => common.h}  |   6 +-
 ...ntel_skl_int3472_discrete.c => discrete.c} |  51 ++--
 .../intel/int3472/intel_skl_int3472_common.c  | 106 --------
 ...ntel_skl_int3472_tps68470.c => tps68470.c} |  88 +++++-
 drivers/platform/x86/intel/int3472/tps68470.h |  25 ++
 .../x86/intel/int3472/tps68470_board_data.c   | 118 ++++++++
 drivers/regulator/Kconfig                     |   9 +
 drivers/regulator/Makefile                    |   1 +
 drivers/regulator/tps68470-regulator.c        | 194 +++++++++++++
 include/linux/acpi.h                          |  12 +
 include/linux/mfd/tps68470.h                  |  11 +
 include/linux/platform_data/tps68470.h        |  35 +++
 20 files changed, 873 insertions(+), 146 deletions(-)
 create mode 100644 drivers/clk/clk-tps68470.c
 rename drivers/platform/x86/intel/int3472/{intel_skl_int3472_clk_and_regulator.c => clk_and_regulator.c} (99%)
 create mode 100644 drivers/platform/x86/intel/int3472/common.c
 rename drivers/platform/x86/intel/int3472/{intel_skl_int3472_common.h => common.h} (94%)
 rename drivers/platform/x86/intel/int3472/{intel_skl_int3472_discrete.c => discrete.c} (91%)
 delete mode 100644 drivers/platform/x86/intel/int3472/intel_skl_int3472_common.c
 rename drivers/platform/x86/intel/int3472/{intel_skl_int3472_tps68470.c => tps68470.c} (58%)
 create mode 100644 drivers/platform/x86/intel/int3472/tps68470.h
 create mode 100644 drivers/platform/x86/intel/int3472/tps68470_board_data.c
 create mode 100644 drivers/regulator/tps68470-regulator.c
 create mode 100644 include/linux/platform_data/tps68470.h