src/sys/dev/ichiic, branch releng/12.2

MFC r360499: ig4iic_acpi_probe: remove set but unused variable

2020-05-22T12:01:29Z

MFC r360241: ig4: ensure that drivers always attach in correct order

2020-05-22T11:55:54Z

Use DRIVER_MODULE_ORDERED(SI_ORDER_ANY) so that ig4's ACPI attachment happens after iicbus and acpi_iicbus drivers are registered.

MFC r360355:

2020-05-03T23:40:16Z

ig4(4): Add PCI IDs for Intel Bay Trail I2C controllers. PR: 245654 Reported by:

MFC r358818:

2020-03-29T23:38:55Z

acpi: Fix stalled value returned by acpi_get_device() after device deletion Newbus device reference attached to ACPI handle is not cleared when newbus device is deleted with devctl(8) delete command. Fix that with calling of AcpiDetachData() from "child_deleted" bus method like acpi_pci driver does. MFC r358819: acpi: Export functions required by upcoming acpi_iicbus driver. MFC r358820: iicbus(4): Add support for ACPI-based children enumeration When iicbus is attached as child of Designware I2C controller it scans all ACPI nodes for "I2C Serial Bus Connection Resource Descriptor" described in section 19.6.57 of ACPI specs. If such a descriptor is found, I2C child is added to iicbus, it's I2C address, IRQ resource and ACPI handle are added to ivars. Existing ACPI bus-hosted child is deleted afterwards. The driver also installs so called "I2C address space handler" which is disabled by default as nontested. Set hw.iicbus.enable_acpi_space_handler loader tunable to 1 to enable it. Reviewed by: markj Differential Revision: https://reviews.freebsd.org/D22901

MFC r354291 - r354322, r354327, r355596

2019-12-22T00:46:07Z

r354291: [ig4] Give common name to PCI and ACPI device drivers r354292: [ig4] Handle controller startup errors Obtained from: DragonflyBSD (509820b) r354293: [ig4] Only enable interrupts when we want them. Otherwise keep mask at 0. Obtained from: DragonflyBSD (d7c8555) r354294: [ig4] Drop driver's internal RX FIFO r354295: [ig4] Do not wait for interrupts in set_controller() routine r354296: [ig4] Reduce scope of io_lock r354297: [ig4] Ignore stray interrupts r354298: [ig4] We actually need to set the Rx threshold register one smaller. Obtained from: DragonflyBSD (02f0bf2) r354299: [ig4] Stop I2C controller after checking that it's kind of functional. Obtained from: DragonfliBSD (0b3eedb) r354300: [ig4] disable controller before initialization of clock counters r354301: [ig4] Add support for polled mode r354302: [ig4] Allow enabling of polled mode from iicbus allocation callback r354303: [ig4] Do not wait until interrupts are enabled at attach stage r354304: [cyapa] Postpone start of the polling thread until sleep is available r354305: [ig4] dump IG4_REG_COMP_PARAM1 and IG4_REG_COMP_VER registers unconditionally r354306: [ig4] Set clock registers based on controller model r354307: [ig4] Implement burst mode for data reads r354308: [ig4] Add suspend/resume support PR: 238037 r354309: [ig4] Remove dead code inherited from DragonflyBSD r354310: [ig4] Rewrite ig4iic_write routine to use TX_EMPTY status flag r354311: [ig4] Convert last remaining usage of TX_NOTFULL status to TX_EMPTY r354312: [ig4] Use interrupts for waiting for empty TX FIFO r354313: [ig4] Convert polling loop from status-based to interrupt-based r354314: [ig4] Improve error detection r354315: [ig4] Set STOP condition and flush TX/RX FIFOs on error r354316: [ig4] On SkyLake controllers issue reset on attach unconditionally. r354317: [ig4] wait for bus stop condition after stop command issued r354318: [ig4] Minor improvement of write pipelining r354319: [ig4] Add generic resource methods to bus interface r354320: [ig4] Add support for CannonLake controllers PR: 240485 Submitted by: Neel Chauhan r354321: [ig4] Enable additional registers support on Appolo Lake controllers r354322: [ig4] Convert ithread interrupt handler to filter based one. r354327: [ig4] Try to workaround MIPS namespace pollution issue r355596: [ig4] Remove unused methods from bus interface Suggested by: jhb Reviewed by: imp (previous version) Differential Revision: https://reviews.freebsd.org/D22016

ig4(4): Fix SDA HOLD time set too low on Skylake controllers

2019-09-15T19:16:42Z

Execution of "Soft reset" command (IG4_REG_RESETS_SKL) at controller init stage sets SDA_HOLD register value to 0x0001 which is often too low for normal operation. Set SDA_HOLD back to 28 after reset to restore controller functionality. PR: 240339 Reported by: imp, GregV, et al.

[ig4] style(9) clean-up

2018-10-04T19:54:47Z

Submitted by: Rajesh Kumar Approved by: re (gjb, kib)

[ig4] Fix device description for Kaby Lake systems

2018-09-16T21:44:36Z

Kaby Lake I2C controller is Intel Sunrise Point-H not Intel Sunrise Point-LP. Submitted by: Dmitry Luhtionov Approved by: re (kib)

[ig4] Add PCI IDs for I2C controller on Intel Kaby Lake systems

2018-09-13T17:36:55Z

PR: 221777 Approved by: re (kib) Submitted by: marc.priggemeyer@gmail.com

[ig4] Fix I/O timeout issue with Designware I2C controller on AMD platforms

2018-08-22T22:56:01Z

Due to hardware limitation AMD I2C controller can't trigger pending interrupt if interrupt status has been changed after clearing interrupt status bits. So, I2C will lose the interrupt and IO will be timed out. Implements a workaround to disable I2C controller interrupt and re-enable I2C interrupt before existing interrupt handler. Submitted by: rajfbsd@gmail.com MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D16720