Merge 'CalcProgrammer1-master'
This commit is contained in:
parent
1dc9218f63
commit
b92c0cfb86
10
README.md
10
README.md
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@ -1,12 +1,16 @@
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# i2c-piix4-aura-dkms
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# openrgb-dkms-drivers
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## Intro
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## Intro
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This repository contains a patched i2c-piix4 module which supports the secondary i2c controller on several >= X370 AM4 mainboards as DKMS-package for Debian GNU/Linux Unstable. This package might work with earlier versions of Debian but mileage may vary. It is designed as a soft dependency for future packaged versions of [OpenRGB](https://gitlab.com/CalcProgrammer1/OpenRGB) to enable access to RGB LED settings of these mainboards.
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This repository contains OpenRGB's i2c-piix4 and i2c-nct6775 drivers as DKMS kernel modules. The i2c-piix4 driver supports the secondary i2c controller on several >= X370 AM4 mainboards. This package is designed for Debian Unstable but might work with earlier versions of Debian, mileage may vary. It is designed as a soft dependency for future packaged versions of [OpenRGB](https://gitlab.com/CalcProgrammer1/OpenRGB) to enable access to RGB controllers on certain mainboards, namely boards with ASUS Aura and ASRock Polychrome RGB systems.
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The original idea of patching and packaging this module was *lend* from the package i2c-piix4-aura-dkms found at [Arch Linux AUR](https://aur.archlinux.org/packages/i2c-piix4-aura-dkms). I have only changed some Debian-specific pathes and added some packaging information with debhelper.
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The original idea of patching and packaging this module was *lend* from the package i2c-piix4-aura-dkms found at [Arch Linux AUR](https://aur.archlinux.org/packages/i2c-piix4-aura-dkms). I have only changed some Debian-specific pathes and added some packaging information with debhelper.
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## Usage
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## Usage
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Clone this repository and run `dpkg-buildpackage -us -uc -b`. Install the resulting package with `sudo dpkg -i path/to.deb`.
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Clone this repository and run `dpkg-buildpackage -us -uc -b`. Install the resulting package with `sudo dpkg -i path/to.deb`.
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To have OpenRGB controlling your LEDs you either need to add your user to the group `adm` or simply run OpenRGB as root. I'd rather not recommend to run any GUI application with root privileges.
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To have OpenRGB controlling your LEDs you either need to add your user to the group `adm` or simply run OpenRGB as root. I'd rather not recommend to run any GUI application with root privileges.
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## Thanks to
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## Thanks to
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- [CalcProgrammer1](https://gitlab.com/CalcProgrammer1) for his awesome work on OpenAuraSDK/OpenRGB and his fix for i2c-piix4,
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- [CalcProgrammer1](https://gitlab.com/CalcProgrammer1) for his awesome work on OpenAuraSDK/OpenRGB and his fix for i2c-piix4 (I swear that this was already in here when I forked it),
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- Térence Clastres for the awesome idea of squeezing this patch into a DKMS package and
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- Térence Clastres for the awesome idea of squeezing this patch into a DKMS package and
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- my gf for sharing and supporting my obsession with RGB LED stuff and Linux.
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- my gf for sharing and supporting my obsession with RGB LED stuff and Linux.
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- [SurfsideShip264](https://www.reddit.com/user/SurfsideShip264/) for pointing out an issue with the build-dependencies
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- [SurfsideShip264](https://www.reddit.com/user/SurfsideShip264/) for pointing out an issue with the build-dependencies
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@ -1,4 +1,4 @@
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i2c-piix4-aura-dkms (5.6.4) unstable; urgency=medium
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openrgb-dkms-drivers (5.6.4) unstable; urgency=medium
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* Initial Release.
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* Initial Release.
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@ -1,4 +1,4 @@
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Source: i2c-piix4-aura-dkms
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Source: openrgb-dkms-drivers
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Section: unknown
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Section: unknown
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Priority: optional
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Priority: optional
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Maintainer: crt0mega <crt0mega@c-r-t.tk>
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Maintainer: crt0mega <crt0mega@c-r-t.tk>
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@ -8,10 +8,12 @@ Standards-Version: 4.4.1
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#Vcs-Browser: https://salsa.debian.org/debian/i2c-piix4-aura-dkms-5.4.6
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#Vcs-Browser: https://salsa.debian.org/debian/i2c-piix4-aura-dkms-5.4.6
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#Vcs-Git: https://salsa.debian.org/debian/i2c-piix4-aura-dkms-5.4.6.git
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#Vcs-Git: https://salsa.debian.org/debian/i2c-piix4-aura-dkms-5.4.6.git
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Package: i2c-piix4-aura-dkms
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Package: openrgb-dkms-drivers
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Architecture: all
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Architecture: all
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Depends: ${shlibs:Depends}, ${misc:Depends}, dkms
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Depends: ${shlibs:Depends}, ${misc:Depends}, dkms
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Description: The i2c-piix4 kernel driver, patched to be used with OpenRGB
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Description: OpenRGB kernel patch includes the i2c-piix4 kernel driver,
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i2c-piix4 needs a patch to enable a second SMBUS controller (see
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patched to enable a second SMBUS controller on AMD AM4 chipsets (see
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Bug 202587 at Kernel.org Bugzilla). This package provides a patched module
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Bug 202587 at Kernel.org Bugzilla), as well as the i2c-nct6775 kernel
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ready for DKMS as well as some helper files found at Archlinux' AUR.
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driver which provides access to Nuvoton Super-IO chips' SMBus
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controllers. This package provides a patched module ready for DKMS as
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well as some helper files found at Archlinux' AUR.
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@ -1,5 +1,5 @@
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Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
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Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
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Upstream-Name: i2c-piix4-aura-dkms-5.4.6
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Upstream-Name: openrgb-dkms-drivers-5.4.6
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Upstream-Contact: <preferred name and address to reach the upstream project>
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Upstream-Contact: <preferred name and address to reach the upstream project>
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Source: <url://example.com>
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Source: <url://example.com>
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@ -1,6 +1,12 @@
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PACKAGE_NAME="i2c-piix4-aura"
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PACKAGE_NAME="openrgb-dkms-drivers"
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PACKAGE_VERSION="5.4.6"
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PACKAGE_VERSION="5.4.6"
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BUILT_MODULE_NAME[0]="i2c-piix4"
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BUILT_MODULE_NAME[0]="i2c-piix4"
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MAKE[0]="make"
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MAKE[0]="make"
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DEST_MODULE_LOCATION[0]="/kernel/drivers/i2c/busses"
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DEST_MODULE_LOCATION[0]="/kernel/drivers/i2c/busses"
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BUILT_MODULE_NAME[1]="i2c-nct6775"
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MAKE[1]="make"
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DEST_MODULE_LOCATION[1]="/kernel/drivers/i2c/busses"
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AUTOINSTALL="yes"
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AUTOINSTALL="yes"
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@ -18,9 +18,14 @@ VERSION=$(shell dpkg-parsechangelog |grep ^Version:|cut -d ' ' -f 2)
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dh $@ --with dkms
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dh $@ --with dkms
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override_dh_install:
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override_dh_install:
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dh_install src/Makefile src/i2c-piix4.c usr/src/i2c-piix4-aura-$(VERSION)/
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# i2c-piix4 source
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dh_install src/90-i2c-aura.rules lib/udev/rules.d/
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dh_install src/Makefile src/i2c-piix4.c usr/src/openrgb-dkms-drivers-$(VERSION)/
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dh_install src/i2c-aura.conf usr/lib/modules-load.d/
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# i2c-nct6775 source
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dh_install src/Makefile src/i2c-nct6775.c usr/src/openrgb-dkms-drivers-$(VERSION)/
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# modules-load configuration
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dh_install src/i2c-openrgb.conf usr/lib/modules-load.d/
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override_dh_dkms:
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override_dh_dkms:
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dh_dkms -V $(VERSION)
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dh_dkms -V $(VERSION)
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@ -1,2 +0,0 @@
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KERNEL=="i2c-*", ATTR{name}=="SMBus*" SUBSYSTEM=="i2c-dev" MODE="0660", GROUP="adm"
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@ -1,4 +1,4 @@
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obj-m := i2c-piix4.o
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obj-m := i2c-piix4.o i2c-nct6775.o
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ifndef KERNELRELEASE
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ifndef KERNELRELEASE
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KRELEASE := $(shell uname -r)
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KRELEASE := $(shell uname -r)
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@ -0,0 +1,647 @@
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/*
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* i2c-nct6775 - Driver for the SMBus master functionality of
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* Nuvoton NCT677x Super-I/O chips
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*
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* Copyright (C) 2019 Adam Honse <calcprogrammer1@gmail.com>
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*
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* Derived from nct6775 hwmon driver
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* Copyright (C) 2012 Guenter Roeck <linux@roeck-us.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/jiffies.h>
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#include <linux/platform_device.h>
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#include <linux/hwmon.h>
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#include <linux/hwmon-sysfs.h>
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#include <linux/hwmon-vid.h>
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#include <linux/err.h>
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#include <linux/mutex.h>
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#include <linux/delay.h>
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#include <linux/ioport.h>
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#include <linux/i2c.h>
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#include <linux/acpi.h>
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#include <linux/bitops.h>
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#include <linux/dmi.h>
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#include <linux/io.h>
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#include <linux/nospec.h>
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#define DRVNAME "i2c-nct6775"
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/* Nuvoton SMBus address offsets */
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#define SMBHSTDAT (0 + nuvoton_nct6793d_smba)
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#define SMBBLKSZ (1 + nuvoton_nct6793d_smba)
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#define SMBHSTCMD (2 + nuvoton_nct6793d_smba)
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#define SMBHSTIDX (3 + nuvoton_nct6793d_smba) //Index field is the Command field on other controllers
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#define SMBHSTCTL (4 + nuvoton_nct6793d_smba)
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#define SMBHSTADD (5 + nuvoton_nct6793d_smba)
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#define SMBHSTERR (9 + nuvoton_nct6793d_smba)
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#define SMBHSTSTS (0xE + nuvoton_nct6793d_smba)
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/* Command register */
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#define NCT6793D_READ_BYTE 0
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#define NCT6793D_READ_WORD 1
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#define NCT6793D_READ_BLOCK 2
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#define NCT6793D_BLOCK_WRITE_READ_PROC_CALL 3
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#define NCT6793D_PROC_CALL 4
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#define NCT6793D_WRITE_BYTE 8
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#define NCT6793D_WRITE_WORD 9
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#define NCT6793D_WRITE_BLOCK 10
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/* Control register */
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#define NCT6793D_MANUAL_START 128
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#define NCT6793D_SOFT_RESET 64
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/* Error register */
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#define NCT6793D_NO_ACK 32
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/* Status register */
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#define NCT6793D_FIFO_EMPTY 1
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#define NCT6793D_FIFO_FULL 2
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#define NCT6793D_MANUAL_ACTIVE 4
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#define NCT6775_LD_SMBUS 0x0B
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/* Other settings */
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#define MAX_RETRIES 400
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enum kinds { nct6106, nct6775, nct6776, nct6779, nct6791, nct6792, nct6793,
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nct6795, nct6796, nct6798 };
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struct nct6775_sio_data {
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int sioreg;
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enum kinds kind;
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};
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/* used to set data->name = nct6775_device_names[data->sio_kind] */
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static const char * const nct6775_device_names[] = {
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"nct6106",
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"nct6775",
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"nct6776",
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"nct6779",
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"nct6791",
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"nct6792",
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"nct6793",
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"nct6795",
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"nct6796",
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"nct6798",
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};
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static const char * const nct6775_sio_names[] __initconst = {
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"NCT6106D",
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"NCT6775F",
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"NCT6776D/F",
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"NCT6779D",
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"NCT6791D",
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"NCT6792D",
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"NCT6793D",
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"NCT6795D",
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"NCT6796D",
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"NCT6798D",
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};
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#define SIO_REG_LDSEL 0x07 /* Logical device select */
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#define SIO_REG_DEVID 0x20 /* Device ID (2 bytes) */
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#define SIO_REG_SMBA 0x62 /* SMBus base address register */
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#define SIO_NCT6106_ID 0xc450
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#define SIO_NCT6775_ID 0xb470
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#define SIO_NCT6776_ID 0xc330
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#define SIO_NCT6779_ID 0xc560
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#define SIO_NCT6791_ID 0xc800
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#define SIO_NCT6792_ID 0xc910
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#define SIO_NCT6793_ID 0xd120
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#define SIO_NCT6795_ID 0xd350
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#define SIO_NCT6796_ID 0xd420
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#define SIO_NCT6798_ID 0xd428
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#define SIO_ID_MASK 0xFFF0
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static inline void
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superio_outb(int ioreg, int reg, int val)
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{
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outb(reg, ioreg);
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outb(val, ioreg + 1);
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}
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static inline int
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superio_inb(int ioreg, int reg)
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{
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outb(reg, ioreg);
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return inb(ioreg + 1);
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}
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static inline void
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superio_select(int ioreg, int ld)
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{
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outb(SIO_REG_LDSEL, ioreg);
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outb(ld, ioreg + 1);
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}
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static inline int
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superio_enter(int ioreg)
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{
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/*
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* Try to reserve <ioreg> and <ioreg + 1> for exclusive access.
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||||||
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*/
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if (!request_muxed_region(ioreg, 2, DRVNAME))
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return -EBUSY;
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outb(0x87, ioreg);
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outb(0x87, ioreg);
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||||||
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return 0;
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||||||
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}
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static inline void
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superio_exit(int ioreg)
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{
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outb(0xaa, ioreg);
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outb(0x02, ioreg);
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outb(0x02, ioreg + 1);
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release_region(ioreg, 2);
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}
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||||||
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/*
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* ISA constants
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||||||
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*/
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#define IOREGION_ALIGNMENT (~7)
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#define IOREGION_LENGTH 2
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#define ADDR_REG_OFFSET 0
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#define DATA_REG_OFFSET 1
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#define NCT6775_REG_BANK 0x4E
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#define NCT6775_REG_CONFIG 0x40
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static struct i2c_adapter *nct6775_adapter;
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struct i2c_nct6775_adapdata {
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unsigned short smba;
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};
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/* Return negative errno on error. */
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static s32 nct6775_access(struct i2c_adapter * adap, u16 addr,
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unsigned short flags, char read_write,
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u8 command, int size, union i2c_smbus_data * data)
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||||||
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{
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struct i2c_nct6775_adapdata *adapdata = i2c_get_adapdata(adap);
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unsigned short nuvoton_nct6793d_smba = adapdata->smba;
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int i, len, cnt;
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union i2c_smbus_data tmp_data;
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int timeout = 0;
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|
|
||||||
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tmp_data.word = 0;
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cnt = 0;
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len = 0;
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||||||
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||||||
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outb_p(NCT6793D_SOFT_RESET, SMBHSTCTL);
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||||||
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|
||||||
|
switch (size) {
|
||||||
|
case I2C_SMBUS_QUICK:
|
||||||
|
outb_p((addr << 1) | read_write,
|
||||||
|
SMBHSTADD);
|
||||||
|
break;
|
||||||
|
case I2C_SMBUS_BYTE_DATA:
|
||||||
|
tmp_data.byte = data->byte;
|
||||||
|
case I2C_SMBUS_BYTE:
|
||||||
|
outb_p((addr << 1) | read_write,
|
||||||
|
SMBHSTADD);
|
||||||
|
outb_p(command, SMBHSTIDX);
|
||||||
|
if (read_write == I2C_SMBUS_WRITE) {
|
||||||
|
outb_p(tmp_data.byte, SMBHSTDAT);
|
||||||
|
outb_p(NCT6793D_WRITE_BYTE, SMBHSTCMD);
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
outb_p(NCT6793D_READ_BYTE, SMBHSTCMD);
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
case I2C_SMBUS_WORD_DATA:
|
||||||
|
outb_p((addr << 1) | read_write,
|
||||||
|
SMBHSTADD);
|
||||||
|
outb_p(command, SMBHSTIDX);
|
||||||
|
if (read_write == I2C_SMBUS_WRITE) {
|
||||||
|
outb_p(data->word & 0xff, SMBHSTDAT);
|
||||||
|
outb_p((data->word & 0xff00) >> 8, SMBHSTDAT);
|
||||||
|
outb_p(NCT6793D_WRITE_WORD, SMBHSTCMD);
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
outb_p(NCT6793D_READ_WORD, SMBHSTCMD);
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
case I2C_SMBUS_BLOCK_DATA:
|
||||||
|
outb_p((addr << 1) | read_write,
|
||||||
|
SMBHSTADD);
|
||||||
|
outb_p(command, SMBHSTIDX);
|
||||||
|
if (read_write == I2C_SMBUS_WRITE) {
|
||||||
|
len = data->block[0];
|
||||||
|
if (len == 0 || len > I2C_SMBUS_BLOCK_MAX)
|
||||||
|
return -EINVAL;
|
||||||
|
outb_p(len, SMBBLKSZ);
|
||||||
|
|
||||||
|
cnt = 1;
|
||||||
|
if (len >= 4) {
|
||||||
|
for (i = cnt; i <= 4; i++) {
|
||||||
|
outb_p(data->block[i], SMBHSTDAT);
|
||||||
|
}
|
||||||
|
|
||||||
|
len -= 4;
|
||||||
|
cnt += 4;
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
for (i = cnt; i <= len; i++ ) {
|
||||||
|
outb_p(data->block[i], SMBHSTDAT);
|
||||||
|
}
|
||||||
|
|
||||||
|
len = 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
outb_p(NCT6793D_WRITE_BLOCK, SMBHSTCMD);
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
return -ENOTSUPP;
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
dev_warn(&adap->dev, "Unsupported transaction %d\n", size);
|
||||||
|
return -EOPNOTSUPP;
|
||||||
|
}
|
||||||
|
|
||||||
|
outb_p(NCT6793D_MANUAL_START, SMBHSTCTL);
|
||||||
|
|
||||||
|
while ((size == I2C_SMBUS_BLOCK_DATA) && (len > 0)) {
|
||||||
|
if (read_write == I2C_SMBUS_WRITE) {
|
||||||
|
timeout = 0;
|
||||||
|
while ((inb_p(SMBHSTSTS) & NCT6793D_FIFO_EMPTY) == 0)
|
||||||
|
{
|
||||||
|
if(timeout > MAX_RETRIES)
|
||||||
|
{
|
||||||
|
return -ETIMEDOUT;
|
||||||
|
}
|
||||||
|
usleep_range(250, 500);
|
||||||
|
timeout++;
|
||||||
|
}
|
||||||
|
|
||||||
|
//Load more bytes into FIFO
|
||||||
|
if (len >= 4) {
|
||||||
|
for (i = cnt; i <= (cnt + 4); i++) {
|
||||||
|
outb_p(data->block[i], SMBHSTDAT);
|
||||||
|
}
|
||||||
|
|
||||||
|
len -= 4;
|
||||||
|
cnt += 4;
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
for (i = cnt; i <= (cnt + len); i++) {
|
||||||
|
outb_p(data->block[i], SMBHSTDAT);
|
||||||
|
}
|
||||||
|
|
||||||
|
len = 0;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
return -ENOTSUPP;
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
//wait for manual mode to complete
|
||||||
|
timeout = 0;
|
||||||
|
while ((inb_p(SMBHSTSTS) & NCT6793D_MANUAL_ACTIVE) != 0)
|
||||||
|
{
|
||||||
|
if(timeout > MAX_RETRIES)
|
||||||
|
{
|
||||||
|
return -ETIMEDOUT;
|
||||||
|
}
|
||||||
|
usleep_range(250, 500);
|
||||||
|
timeout++;
|
||||||
|
}
|
||||||
|
|
||||||
|
if ((inb_p(SMBHSTERR) & NCT6793D_NO_ACK) != 0) {
|
||||||
|
return -ENXIO;
|
||||||
|
}
|
||||||
|
else if ((read_write == I2C_SMBUS_WRITE) || (size == I2C_SMBUS_QUICK)) {
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
switch (size) {
|
||||||
|
case I2C_SMBUS_QUICK:
|
||||||
|
case I2C_SMBUS_BYTE_DATA:
|
||||||
|
data->byte = inb_p(SMBHSTDAT);
|
||||||
|
break;
|
||||||
|
case I2C_SMBUS_WORD_DATA:
|
||||||
|
data->word = inb_p(SMBHSTDAT) + (inb_p(SMBHSTDAT) << 8);
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static u32 nct6775_func(struct i2c_adapter *adapter)
|
||||||
|
{
|
||||||
|
return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE |
|
||||||
|
I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA |
|
||||||
|
I2C_FUNC_SMBUS_BLOCK_DATA;
|
||||||
|
}
|
||||||
|
|
||||||
|
static const struct i2c_algorithm smbus_algorithm = {
|
||||||
|
.smbus_xfer = nct6775_access,
|
||||||
|
.functionality = nct6775_func,
|
||||||
|
};
|
||||||
|
|
||||||
|
static int nct6775_add_adapter(unsigned short smba, const char *name, struct i2c_adapter **padap)
|
||||||
|
{
|
||||||
|
struct i2c_adapter *adap;
|
||||||
|
struct i2c_nct6775_adapdata *adapdata;
|
||||||
|
int retval;
|
||||||
|
|
||||||
|
adap = kzalloc(sizeof(*adap), GFP_KERNEL);
|
||||||
|
if (adap == NULL) {
|
||||||
|
return -ENOMEM;
|
||||||
|
}
|
||||||
|
|
||||||
|
adap->owner = THIS_MODULE;
|
||||||
|
adap->class = I2C_CLASS_HWMON | I2C_CLASS_SPD;
|
||||||
|
adap->algo = &smbus_algorithm;
|
||||||
|
|
||||||
|
adapdata = kzalloc(sizeof(*adapdata), GFP_KERNEL);
|
||||||
|
if (adapdata == NULL) {
|
||||||
|
kfree(adap);
|
||||||
|
return -ENOMEM;
|
||||||
|
}
|
||||||
|
|
||||||
|
adapdata->smba = smba;
|
||||||
|
|
||||||
|
snprintf(adap->name, sizeof(adap->name),
|
||||||
|
"SMBus NCT67xx adapter%s at %04x", name, smba);
|
||||||
|
|
||||||
|
i2c_set_adapdata(adap, adapdata);
|
||||||
|
|
||||||
|
retval = i2c_add_adapter(adap);
|
||||||
|
if (retval) {
|
||||||
|
kfree(adapdata);
|
||||||
|
kfree(adap);
|
||||||
|
return retval;
|
||||||
|
}
|
||||||
|
|
||||||
|
*padap = adap;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static void nct6775_remove_adapter(struct i2c_adapter *adap)
|
||||||
|
{
|
||||||
|
struct i2c_nct6775_adapdata *adapdata = i2c_get_adapdata(adap);
|
||||||
|
|
||||||
|
if (adapdata->smba) {
|
||||||
|
i2c_del_adapter(adap);
|
||||||
|
kfree(adapdata);
|
||||||
|
kfree(adap);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
//static SIMPLE_DEV_PM_OPS(nct6775_dev_pm_ops, nct6775_suspend, nct6775_resume);
|
||||||
|
|
||||||
|
/*
|
||||||
|
* when Super-I/O functions move to a separate file, the Super-I/O
|
||||||
|
* bus will manage the lifetime of the device and this module will only keep
|
||||||
|
* track of the nct6775 driver. But since we use platform_device_alloc(), we
|
||||||
|
* must keep track of the device
|
||||||
|
*/
|
||||||
|
static struct platform_device *pdev[2];
|
||||||
|
|
||||||
|
static int nct6775_probe(struct platform_device *pdev)
|
||||||
|
{
|
||||||
|
struct device *dev = &pdev->dev;
|
||||||
|
struct nct6775_sio_data *sio_data = dev_get_platdata(dev);
|
||||||
|
struct resource *res;
|
||||||
|
|
||||||
|
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
|
||||||
|
if (!devm_request_region(&pdev->dev, res->start, IOREGION_LENGTH,
|
||||||
|
DRVNAME))
|
||||||
|
return -EBUSY;
|
||||||
|
|
||||||
|
switch (sio_data->kind) {
|
||||||
|
case nct6791:
|
||||||
|
case nct6792:
|
||||||
|
case nct6793:
|
||||||
|
case nct6795:
|
||||||
|
case nct6796:
|
||||||
|
case nct6798:
|
||||||
|
nct6775_add_adapter(res->start, "", &nct6775_adapter);
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
return -ENODEV;
|
||||||
|
}
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
/*
|
||||||
|
static void nct6791_enable_io_mapping(int sioaddr)
|
||||||
|
{
|
||||||
|
int val;
|
||||||
|
|
||||||
|
val = superio_inb(sioaddr, NCT6791_REG_HM_IO_SPACE_LOCK_ENABLE);
|
||||||
|
if (val & 0x10) {
|
||||||
|
pr_info("Enabling hardware monitor logical device mappings.\n");
|
||||||
|
superio_outb(sioaddr, NCT6791_REG_HM_IO_SPACE_LOCK_ENABLE,
|
||||||
|
val & ~0x10);
|
||||||
|
}
|
||||||
|
}*/
|
||||||
|
|
||||||
|
static struct platform_driver i2c_nct6775_driver = {
|
||||||
|
.driver = {
|
||||||
|
.name = DRVNAME,
|
||||||
|
// .pm = &nct6775_dev_pm_ops,
|
||||||
|
},
|
||||||
|
.probe = nct6775_probe,
|
||||||
|
};
|
||||||
|
|
||||||
|
static void __exit i2c_nct6775_exit(void)
|
||||||
|
{
|
||||||
|
int i;
|
||||||
|
|
||||||
|
if(nct6775_adapter)
|
||||||
|
nct6775_remove_adapter(nct6775_adapter);
|
||||||
|
|
||||||
|
for (i = 0; i < ARRAY_SIZE(pdev); i++) {
|
||||||
|
if (pdev[i])
|
||||||
|
platform_device_unregister(pdev[i]);
|
||||||
|
}
|
||||||
|
platform_driver_unregister(&i2c_nct6775_driver);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* nct6775_find() looks for a '627 in the Super-I/O config space */
|
||||||
|
static int __init nct6775_find(int sioaddr, struct nct6775_sio_data *sio_data)
|
||||||
|
{
|
||||||
|
u16 val;
|
||||||
|
int err;
|
||||||
|
int addr;
|
||||||
|
|
||||||
|
err = superio_enter(sioaddr);
|
||||||
|
if (err)
|
||||||
|
return err;
|
||||||
|
|
||||||
|
val = (superio_inb(sioaddr, SIO_REG_DEVID) << 8) |
|
||||||
|
superio_inb(sioaddr, SIO_REG_DEVID + 1);
|
||||||
|
|
||||||
|
switch (val & SIO_ID_MASK) {
|
||||||
|
case SIO_NCT6106_ID:
|
||||||
|
sio_data->kind = nct6106;
|
||||||
|
break;
|
||||||
|
case SIO_NCT6775_ID:
|
||||||
|
sio_data->kind = nct6775;
|
||||||
|
break;
|
||||||
|
case SIO_NCT6776_ID:
|
||||||
|
sio_data->kind = nct6776;
|
||||||
|
break;
|
||||||
|
case SIO_NCT6779_ID:
|
||||||
|
sio_data->kind = nct6779;
|
||||||
|
break;
|
||||||
|
case SIO_NCT6791_ID:
|
||||||
|
sio_data->kind = nct6791;
|
||||||
|
break;
|
||||||
|
case SIO_NCT6792_ID:
|
||||||
|
sio_data->kind = nct6792;
|
||||||
|
break;
|
||||||
|
case SIO_NCT6793_ID:
|
||||||
|
sio_data->kind = nct6793;
|
||||||
|
break;
|
||||||
|
case SIO_NCT6795_ID:
|
||||||
|
sio_data->kind = nct6795;
|
||||||
|
break;
|
||||||
|
case SIO_NCT6796_ID:
|
||||||
|
sio_data->kind = nct6796;
|
||||||
|
break;
|
||||||
|
case SIO_NCT6798_ID:
|
||||||
|
sio_data->kind = nct6798;
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
if (val != 0xffff)
|
||||||
|
pr_debug("unsupported chip ID: 0x%04x\n", val);
|
||||||
|
superio_exit(sioaddr);
|
||||||
|
return -ENODEV;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* We have a known chip, find the SMBus I/O address */
|
||||||
|
superio_select(sioaddr, NCT6775_LD_SMBUS);
|
||||||
|
val = (superio_inb(sioaddr, SIO_REG_SMBA) << 8)
|
||||||
|
| superio_inb(sioaddr, SIO_REG_SMBA + 1);
|
||||||
|
addr = val & IOREGION_ALIGNMENT;
|
||||||
|
if (addr == 0) {
|
||||||
|
pr_err("Refusing to enable a Super-I/O device with a base I/O port 0\n");
|
||||||
|
superio_exit(sioaddr);
|
||||||
|
return -ENODEV;
|
||||||
|
}
|
||||||
|
|
||||||
|
//if (sio_data->kind == nct6791 || sio_data->kind == nct6792 ||
|
||||||
|
// sio_data->kind == nct6793 || sio_data->kind == nct6795 ||
|
||||||
|
// sio_data->kind == nct6796)
|
||||||
|
// nct6791_enable_io_mapping(sioaddr);
|
||||||
|
|
||||||
|
superio_exit(sioaddr);
|
||||||
|
pr_info("Found %s or compatible chip at %#x:%#x\n",
|
||||||
|
nct6775_sio_names[sio_data->kind], sioaddr, addr);
|
||||||
|
sio_data->sioreg = sioaddr;
|
||||||
|
|
||||||
|
return addr;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int __init i2c_nct6775_init(void)
|
||||||
|
{
|
||||||
|
int i, err;
|
||||||
|
bool found = false;
|
||||||
|
int address;
|
||||||
|
struct resource res;
|
||||||
|
struct nct6775_sio_data sio_data;
|
||||||
|
int sioaddr[2] = { 0x2e, 0x4e };
|
||||||
|
|
||||||
|
err = platform_driver_register(&i2c_nct6775_driver);
|
||||||
|
if (err)
|
||||||
|
return err;
|
||||||
|
|
||||||
|
/*
|
||||||
|
* initialize sio_data->kind and sio_data->sioreg.
|
||||||
|
*
|
||||||
|
* when Super-I/O functions move to a separate file, the Super-I/O
|
||||||
|
* driver will probe 0x2e and 0x4e and auto-detect the presence of a
|
||||||
|
* nct6775 hardware monitor, and call probe()
|
||||||
|
*/
|
||||||
|
for (i = 0; i < ARRAY_SIZE(pdev); i++) {
|
||||||
|
address = nct6775_find(sioaddr[i], &sio_data);
|
||||||
|
if (address <= 0)
|
||||||
|
continue;
|
||||||
|
|
||||||
|
found = true;
|
||||||
|
|
||||||
|
pdev[i] = platform_device_alloc(DRVNAME, address);
|
||||||
|
if (!pdev[i]) {
|
||||||
|
err = -ENOMEM;
|
||||||
|
goto exit_device_unregister;
|
||||||
|
}
|
||||||
|
|
||||||
|
err = platform_device_add_data(pdev[i], &sio_data,
|
||||||
|
sizeof(struct nct6775_sio_data));
|
||||||
|
if (err)
|
||||||
|
goto exit_device_put;
|
||||||
|
|
||||||
|
memset(&res, 0, sizeof(res));
|
||||||
|
res.name = DRVNAME;
|
||||||
|
res.start = address;
|
||||||
|
res.end = address + IOREGION_LENGTH - 1;
|
||||||
|
res.flags = IORESOURCE_IO;
|
||||||
|
|
||||||
|
err = acpi_check_resource_conflict(&res);
|
||||||
|
if (err) {
|
||||||
|
platform_device_put(pdev[i]);
|
||||||
|
pdev[i] = NULL;
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
|
||||||
|
err = platform_device_add_resources(pdev[i], &res, 1);
|
||||||
|
if (err)
|
||||||
|
goto exit_device_put;
|
||||||
|
|
||||||
|
/* platform_device_add calls probe() */
|
||||||
|
err = platform_device_add(pdev[i]);
|
||||||
|
if (err)
|
||||||
|
goto exit_device_put;
|
||||||
|
}
|
||||||
|
if (!found) {
|
||||||
|
err = -ENODEV;
|
||||||
|
goto exit_unregister;
|
||||||
|
}
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
|
||||||
|
exit_device_put:
|
||||||
|
platform_device_put(pdev[i]);
|
||||||
|
exit_device_unregister:
|
||||||
|
while (--i >= 0) {
|
||||||
|
if (pdev[i])
|
||||||
|
platform_device_unregister(pdev[i]);
|
||||||
|
}
|
||||||
|
exit_unregister:
|
||||||
|
platform_driver_unregister(&i2c_nct6775_driver);
|
||||||
|
return err;
|
||||||
|
}
|
||||||
|
|
||||||
|
MODULE_AUTHOR("Adam Honse <calcprogrammer1@gmail.com>");
|
||||||
|
MODULE_DESCRIPTION("SMBus driver for NCT6775F and compatible chips");
|
||||||
|
MODULE_LICENSE("GPL");
|
||||||
|
|
||||||
|
module_init(i2c_nct6775_init);
|
||||||
|
module_exit(i2c_nct6775_exit);
|
||||||
|
|
@ -1,2 +1,3 @@
|
||||||
i2c-piix4
|
i2c-piix4
|
||||||
|
i2c-nct6775
|
||||||
i2c-dev
|
i2c-dev
|
||||||
Loading…
Reference in New Issue