src/sys/dev/ichiic, branch stable/14 FreeBSD source tree ig4_iic: Allow sleeping if called from iichid interrupt handler. 2025-05-15T18:11:55+00:00 Vladimir Kondratyev wulf@FreeBSD.org 2025-03-07T06:26:51+00:00 c58c931e20045a6e254df5901e0321b537337440 This replaces 50 ms busy loop with mtx_sleep for the same duration thus saving CPU time when iichid is driven with interrupts. Sponsored by: Future Crew, LLC MFC after: 2 month Differential Revision: https://reviews.freebsd.org/D48956 (cherry picked from commit c7225a3ede3cf99c538158962f4d65dee435bbcd) 
This replaces 50 ms busy loop with mtx_sleep for the same duration thus
saving CPU time when iichid is driven with interrupts.

Sponsored by:	Future Crew, LLC
MFC after:	2 month
Differential Revision:	https://reviews.freebsd.org/D48956

(cherry picked from commit c7225a3ede3cf99c538158962f4d65dee435bbcd)
ig4(4): Add Intel ACPI HID 2025-04-30T07:32:22+00:00 Dmitry Luhtionov dmitryluhtionov@gmail.com 2025-02-02T07:22:55+00:00 6d2885d50e8043b9596221385bdbc5a9082a7409 MFC after: 1 month (cherry picked from commit 64dcfa2593d4729f16cb3e2d97088a2e69900df1) 
MFC after:	1 month

(cherry picked from commit 64dcfa2593d4729f16cb3e2d97088a2e69900df1)
ig4(4): Add Meteor Lake PCI IDs 2024-11-12T04:08:43+00:00 Austin Shafer ashafer@badland.io 2024-11-09T05:05:34+00:00 5cc7196a81fe6924a2994a1efc31468ad045b0ce PR: 282389 MFC after: 3 days (cherry picked from commit bab5e3d468305928e9e5cf1ca9efcee4c89f6a76) 
PR:		282389
MFC after:	3 days

(cherry picked from commit bab5e3d468305928e9e5cf1ca9efcee4c89f6a76)
Add smbus and i2c device IDs for Meteor Lake 2024-10-17T16:32:38+00:00 SHENG-YI HONG aokblast@FreeBSD.org 2024-08-13T12:22:43+00:00 14c22e28e4ee62f4d3f2d6004881d874fafa7d11 Reviewed by: emaste, Daniel Schaefer <dhs@frame.work> MFC after: 3 days Sponsored by: Framework Computer Inc Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D46249 (cherry picked from commit d3b05d0ea10abe059dc63c6fb6ef3f061b758af2) 
Reviewed by:	emaste, Daniel Schaefer <dhs@frame.work>
MFC after:	3 days
Sponsored by:	Framework Computer Inc
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D46249

(cherry picked from commit d3b05d0ea10abe059dc63c6fb6ef3f061b758af2)
ig4: Actively use FIFO thresholds 2024-01-19T16:33:10+00:00 Alexander Motin mav@FreeBSD.org 2023-12-24T23:18:11+00:00 60452092dbdf9c192dddd9b8d38feaa2b797c8b8 Before every wait for FIFO interrupt set how much data/space do we want to see there. Previous code was not using it for receive, as result aggregating interrupts only within processing latency. The new code needs only one interrupt per transfer per FIFO length. On my Dell XPS 13 9310 with iichid(4) touchscreen and touchpad this reduces the interrupt rate per device down to 2 per sample or 16-20 per second when idle and 120-160 per second when actively touched. MFC after: 1 month (cherry picked from commit 13037eaabede7fb7fbc25f4e84b549c73f9acb3c) 
Before every wait for FIFO interrupt set how much data/space do we
want to see there.  Previous code was not using it for receive, as
result aggregating interrupts only within processing latency.  The
new code needs only one interrupt per transfer per FIFO length.

On my Dell XPS 13 9310 with iichid(4) touchscreen and touchpad this
reduces the interrupt rate per device down to 2 per sample or 16-20
per second when idle and 120-160 per second when actively touched.

MFC after:	1 month

(cherry picked from commit 13037eaabede7fb7fbc25f4e84b549c73f9acb3c)
ig4: Fix FIFO depths detection 2024-01-19T16:33:10+00:00 Alexander Motin mav@FreeBSD.org 2023-12-24T00:02:49+00:00 512235a1d36dd0a855e8a4d3e876100b5f67b3af At least on my Tiger Lake-LP queue depth detection failed before the ig4iic_set_config() call, resulting in no FIFO use. Moving it after solves the problem, getting proper 64 bytes size. On my Dell XPS 13 9310 with iichid(4) touchscreen and touchpad this by few times reduces context switch rate in the driver, and probably also improves the I2C bus utilization. MFC after: 1 month (cherry picked from commit 9c9d7fdd9f0041783955c5f540ac55a900877c0c) 
At least on my Tiger Lake-LP queue depth detection failed before the
ig4iic_set_config() call, resulting in no FIFO use.  Moving it after
solves the problem, getting proper 64 bytes size.

On my Dell XPS 13 9310 with iichid(4) touchscreen and touchpad this
by few times reduces context switch rate in the driver, and probably
also improves the I2C bus utilization.

MFC after:	1 month

(cherry picked from commit 9c9d7fdd9f0041783955c5f540ac55a900877c0c)
ig4: Add PCI IDs for Intel Ice Lake I2C controller. 2023-12-19T20:34:56+00:00 Vladimir Kondratyev wulf@FreeBSD.org 2023-11-27T15:25:48+00:00 36d6a456547cfe2a565bc60990e9cf421d267d07 PR: 275115 Tested by: Sam <sam3423.yntmr_AT_slmail_DOT_me> 
PR:		275115
Tested by:	Sam <sam3423.yntmr_AT_slmail_DOT_me>
sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16T17:54:36+00:00 Warner Losh imp@FreeBSD.org 2023-08-16T17:54:36+00:00 685dc743dc3b5645e34836464128e1c0558b404b Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/ 
Remove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/
sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16T17:54:11+00:00 Warner Losh imp@FreeBSD.org 2023-08-16T17:54:11+00:00 95ee2897e98f5d444f26ed2334cc7c439f9c16c6 Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/ 
Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/
ichiic: use bool for one-bit wide bit-fields 2023-04-19T20:25:50+00:00 Dimitry Andric dim@FreeBSD.org 2023-04-18T18:08:28+00:00 87f55ab0b46ad72efee11d1b64ec8f839bb013da A one-bit wide bit-field can take only the values 0 and -1. Clang 16 introduced a warning that "implicit truncation from 'int' to a one-bit wide bit-field changes value from 1 to -1". Fix by using c99 bool. Reported by: Clang Reviewed by: emaste, wulf MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D39665 
A one-bit wide bit-field can take only the values 0 and -1. Clang 16
introduced a warning that "implicit truncation from 'int' to a one-bit
wide bit-field changes value from 1 to -1". Fix by using c99 bool.

Reported by:	Clang
Reviewed by:	emaste, wulf
MFC after:	3 days
Differential Revision: https://reviews.freebsd.org/D39665