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authorWentong Wu <wentong.wu@intel.com>2023-07-29 14:52:55 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2023-08-17 19:29:05 +0300
commit7f6fd06d34f4a9bd62bc30e9232934cfb89ae4d8 (patch)
treee446b8bff252404287d37d668088b9b28b7bdc9a /drivers/acpi
parent2ccdd1b13c591d306f0401d98dedc4bdcd02b421 (diff)
downloadlinux-7f6fd06d34f4a9bd62bc30e9232934cfb89ae4d8.tar.xz
ACPI: scan: Defer enumeration of devices with a _DEP pointing to IVSC device
Inside IVSC, switching ownership requires an interface with two different hardware modules, ACE and CSI. The software interface to these modules is based on Intel MEI framework. Usually mei client devices are dynamically created, so the info of consumers depending on mei client devices is not present in the firmware tables. This causes problems with the probe ordering with respect to drivers for consumers of these MEI client devices. But on these camera sensor devices, the ACPI nodes describing the sensors all have a _DEP dependency on the matching MEI bus ACPI device, so adding IVSC MEI bus ACPI device to acpi_honor_dep_ids allows solving the probe-ordering problem by deferring the enumeration of ACPI-devices which have a _DEP dependency on an IVSC mei bus ACPI device. On TGL platform, the HID of IVSC MEI bus ACPI device is INTC1059, and on ADL platform, the HID is INTC1095. So add both of them to acpi_honor_dep_ids. Signed-off-by: Wentong Wu <wentong.wu@intel.com> Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com> [ rjw: Subject and changelog edits ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/scan.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 87e385542576..c799b03d0369 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -795,6 +795,9 @@ static const char * const acpi_ignore_dep_ids[] = {
/* List of HIDs for which we honor deps of matching ACPI devs, when checking _DEP lists. */
static const char * const acpi_honor_dep_ids[] = {
"INT3472", /* Camera sensor PMIC / clk and regulator info */
+ "INTC1059", /* IVSC (TGL) driver must be loaded to allow i2c access to camera sensors */
+ "INTC1095", /* IVSC (ADL) driver must be loaded to allow i2c access to camera sensors */
+ "INTC100A", /* IVSC (RPL) driver must be loaded to allow i2c access to camera sensors */
NULL
};