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

Hans de Goede
2021-10-08T16:22:30Z

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

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2.31.1