summaryrefslogtreecommitdiff
path: root/drivers/i2c/busses/i2c-i801.c
AgeCommit message (Collapse)AuthorFilesLines
2016-01-23i2c: i801: add Intel Lewisburg device IDsAlexandra Yates1-0/+6
commit cdc5a3110e7c3ae793f367285789a6bc39c962dc upstream. Adding Intel codename Lewisburg platform device IDs for SMBus. Signed-off-by: Alexandra Yates <alexandra.yates@linux.intel.com> Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
2016-01-23i2c: i801: Add support for Intel BroxtonJarkko Nikula1-0/+3
commit dd77f423e516293c37c2370b44fd700900409c48 upstream. This patch adds the SMBUS PCI ID of Intel Broxton. Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
2016-01-23i2c: i801: Add support for Intel DNVMika Westerberg1-0/+3
commit 84d7f2ebd70d36e9d83e0973d2f4dac56a671f4f upstream. Intel DNV SoC has the same legacy SMBus host controller than Intel Sunrisepoint PCH. It also has same iTCO watchdog on the bus. Add DNV PCI ID to the list of supported devices. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> [bwh: Backported to 3.2: no FEATURE_IRQ or FEATURE_TCO here] Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
2016-01-23i2c: i801: Add DeviceIDs for SunrisePoint LPDevin Ryles1-0/+3
commit 3eee1799aed90e990e02a73a89bfcff1982c74dd upstream. Signed-off-by: Devin Ryles <devin.ryles@intel.com> Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
2016-01-23i2c: i801: Add Device IDs for Intel Sunrise Point PCHjames.d.ralston@intel.com1-0/+3
commit 3e27a8445c21f8056517f188303827450590d868 upstream. This patch adds the I2C/SMBus Device IDs for the Intel Sunrise Point PCH. Signed-off-by: James Ralston <james.d.ralston@intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
2016-01-23i2c: i801: Add PCI ID for Intel BraswellAlan Cox1-0/+2
commit 39e8e30ee544a62c148033d64a979028b958ca05 upstream. The SMBus host controller is the same as used in Baytrail so add the new PCI ID to the driver's list of supported IDs. Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
2016-01-23i2c: i801: Add device ID for Intel Wildcat Point PCHJean Delvare1-0/+3
commit b299de839157852c563b9f133c8b7e630545a9c3 upstream. Signed-off-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
2016-01-23i2c: i801: Fix the alignment of the device tableJean Delvare1-67/+67
commit ce3161106ab57afbfbe1c33d95bf4a569405983a upstream. A long name broke the alignment, shift the columns a bit to fix it and make the table look nice again. While we're here, switch to the standard comment style to make checkpatch happy, and use tabs instead of spaces for column alignment. Signed-off-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> [bwh: Backported to 3.2: "Interrupt processing" isn't mentioned] Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
2016-01-23i2c: i801: enable Intel BayTrail SMBUSChew, Kean ho1-0/+3
commit 1b31e9b76ef8c62291e698dfdb973499986a7f68 upstream. Add Device ID of Intel BayTrail SMBus Controller. Signed-off-by: Chew, Kean ho <kean.ho.chew@intel.com> Signed-off-by: Chew, Chiau Ee <chiau.ee.chew@intel.com> Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
2016-01-23i2c: i801: Add Device IDs for Intel Wildcat Point-LP PCHJames Ralston1-0/+3
commit afc659241258b40b683998ec801d25d276529f43 upstream. This patch adds the SMBus Device IDs for the Intel Wildcat Point-LP PCH. Signed-off-by: James Ralston <james.d.ralston@intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
2016-01-23i2c: i801: SMBus patch for Intel Coleto Creek DeviceIDsSeth Heasley1-0/+3
commit f39901c1befa556bc91902516a3e2e460000b4a8 upstream. This patch adds the i801 SMBus Controller DeviceIDs for the Intel Coleto Creek PCH. Signed-off-by: Seth Heasley <seth.heasley@intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
2016-01-23i2c: i801: Add Device IDs for Intel Wellsburg PCHJames Ralston1-0/+15
commit a3fc0ff00a46c4b32e7214961a5be9a1dc39b60e upstream. This patch adds the SMBus Device IDs for the Intel Wellsburg PCH Signed-off-by: James Ralston <james.d.ralston@intel.com> Reviewed-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Wolfram Sang <wolfram@the-dreams.de> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
2016-01-23i2c: i801: SMBus patch for Intel Avoton DeviceIDsSeth Heasley1-0/+3
commit c2db409cbc8751ccc7e6d2cc2e41af0d12ea637f upstream. This patch adds the PCU SMBus DeviceID for the Intel Avoton SOC. Signed-off-by: Seth Heasley <seth.heasley@intel.com> Reviewed-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
2012-09-19i2c-i801: Add Device IDs for Intel Lynx Point-LP PCHJames Ralston1-0/+3
commit 4a8f1ddde942e232387e6129ce4f4c412e43802f upstream. Add the SMBus Device IDs for the Intel Lynx Point-LP PCH. Signed-off-by: James Ralston <james.d.ralston@intel.com> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
2012-09-19i2c-i801: Add device IDs for Intel Lynx PointSeth Heasley1-0/+3
commit 062737fb6d90c632439b1f77ad6a4965cfc84a20 upstream. Add the SMBus controller device IDs for the Intel Lynx Point PCH. Signed-off-by: Seth Heasley <seth.heasley@intel.com> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
2011-05-24i2c-i801: Don't depend on other kernel driver config optionsJean Delvare1-10/+6
Don't let other driver config options influence us, as it makes the code more complex and fragile for a small benefit. There's nothing wrong with instantiating I2C devices even if they don't have a driver. And we're talking about 835 extra bytes in the binary on x86-64, that's hardly worth arguing about. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: David Woodhouse <david.woodhouse@intel.com> Cc: Hans de Goede <hdegoede@redhat.com>
2011-05-24i2c-i801: Check for vendor Fujitsu before probing for apanelJean Delvare1-1/+2
Scanning the BIOS memory for the apanel information is costly, so avoid doing it on non-Fujitsu machines. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-05-24i2c-i801: Don't probe for slaves on IDF channelsJean Delvare1-15/+31
I don't know if Fujitsu is ever going to produce Patsburg-based machines, but if they do, I'd rather not probe the secondary (IDF) SMBus channels. At least not until we have a good reason for doing so. On a side note, I'm not even sure if it is right to enable detection of HWMON and DDC devices on the IDF channels. Time will tell... Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Hans de Goede <hdegoede@redhat.com> Acked-by: David Woodhouse <David.Woodhouse@intel.com>
2011-05-24i2c-i801: SMBus patch for Intel Panther Point DeviceIDsSeth Heasley1-1/+3
This patch adds the SMBus controller DeviceID for the Intel Panther Point PCH. Signed-off-by: Seth Heasley <seth.heasley@intel.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-05-24Merge branch 'linux-next' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (27 commits) PCI: Don't use dmi_name_in_vendors in quirk PCI: remove unused AER functions PCI/sysfs: move bus cpuaffinity to class dev_attrs PCI: add rescan to /sys/.../pci_bus/.../ PCI: update bridge resources to get more big ranges when allocating space (again) KVM: Use pci_store/load_saved_state() around VM device usage PCI: Add interfaces to store and load the device saved state PCI: Track the size of each saved capability data area PCI/e1000e: Add and use pci_disable_link_state_locked() x86/PCI: derive pcibios_last_bus from ACPI MCFG PCI: add latency tolerance reporting enable/disable support PCI: add OBFF enable/disable support PCI: add ID-based ordering enable/disable support PCI hotplug: acpiphp: assume device is in state D0 after powering on a slot. PCI: Set PCIE maxpayload for card during hotplug insertion PCI/ACPI: Report _OSC control mask returned on failure to get control x86/PCI: irq and pci_ids patch for Intel Panther Point DeviceIDs PCI: handle positive error codes PCI: check pci_vpd_pci22_wait() return PCI: Use ICH6_GPIO_EN in ich6_lpc_acpi_gpio ... Fix up trivial conflicts in include/linux/pci_ids.h: commit a6e5e2be4461 moved the intel SMBUS ID definitons to the i2c-i801.c driver.
2011-05-01i2c-i801: Move device ID definitions to driverJean Delvare1-0/+5
Move the SMBus device ID definitions of recent devices from pci_ids.h to the i2c-i801.c driver file. They don't have to be shared, as they are clearly identified and only used in this driver. In the future, such IDs will go to i2c-i801 directly. This will make adding support for new devices much faster and easier, as it will avoid cross- subsystem patch sets and merge conflicts. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Seth Heasley <seth.heasley@intel.com> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2011-03-31Fix common misspellingsLucas De Marchi1-1/+1
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2011-03-20i2c-i801: SMBus patch for Intel DH89xxCC DeviceIDsSeth Heasley1-1/+3
Add the SMBus Controller DeviceIDs for the Intel DH89xxCC PCH. Signed-off-by: Seth Heasley <seth.heasley@intel.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2011-01-11i2c-i801: Include <linux/slab.h>Ben Hutchings1-0/+1
Commit 5a0e3ad6af8660be21ca98a971cd00f331318c05 added direct inclusion of <linux/slab.h> to those source files that appeared to need it, but somehow missed this. On most architectures <linux/slab.h> is still indirectly included, but there are exceptions such as alpha. Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2010-10-31i2c-i801: Add PCI idents for Patsburg 'IDF' SMBus controllersDavid Woodhouse1-0/+12
These are the extra 'Integrated Device Function' SMBus controllers found on the Patsburg chipset. Mention the absence of slave mode support. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2010-10-31i2c-i801: Handle multiple instances instead of keeping global stateDavid Woodhouse1-144/+175
It's poor form to keep driver state in global variables rather than per-instance. It never really mattered in practice when there was only one controller on the chipset, but the latest chipsets do have more than one controller, so now we care. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2010-10-31i2c-i801: Add Intel Patsburg device IDSeth Heasley1-0/+2
Add support for the Intel Patsburg PCH SMBus Controller. Signed-off-by: Seth Heasley <seth.heasley@intel.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2010-10-18PCI: update Intel chipset names and definesSeth Heasley1-5/+5
This patch updates the defines for Intel devices in include/linux/pci_ids.h, referenced in arch/x86/pci/irq.c and drivers/i2c/busses/i2c-i801.c, reflecting approved legal branding, and using fuller code-names for products under development. Acked-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Seth Heasley <seth.heasley@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2010-07-09hwmon: Fix autoloading of fschmd on recent Fujitsu machinesJean Delvare1-6/+2
Fujitsu slightly changed the DMI strings in their recent machines, (for example the D2778) and this breaks the automatic loading of the needed fschmd driver. Being more tolerant on string comparison fixes the issue. This closes bug #15634: https://bugzilla.kernel.org/show_bug.cgi?id=15634 Signed-off-by: Jean Delvare <khali@linux-fr.org> Tested-by: Sergey Spiridonov <sena@hurd.homeunix.org> Cc: Hans de Goede <hdegoede@redhat.com>
2010-05-21i2c-i801: Fix all checkpatch warningsIvo Manca1-10/+10
Fix all checkpatch warnings. No functional changes are made. Signed-off-by: Ivo Manca <pinkel@gmail.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2010-05-21i2c-i801: All newer devices have all the optional featuresJean Delvare1-12/+6
Only the oldest devices lack some of the features supported by this driver. List them explicitly, and default to all features enabled for all other chips, including the ones added through sysfs. This will make future driver maintenance easier. In the unlikely event of a not yet supported device not implementing all the features, one can always use the disable_features module parameter to prevent the driver from attempting to use them. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Seth Heasley <seth.heasley@intel.com>
2010-05-21i2c-i801: Let the user disable selected driver featuresJean Delvare1-1/+20
Let the user disable selected features normally supported by the device. This makes it possible to work around possible driver or hardware bugs if the feature in question doesn't work as intended for whatever reason. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Felix Rubinstein <felixru@gmail.com>
2010-03-13i2c-i801: Don't use the block buffer for I2C block writesJean Delvare1-2/+4
Experience has shown that the block buffer can only be used for SMBus (not I2C) block transactions, even though the datasheet doesn't mention this limitation. Reported-by: Felix Rubinstein <felixru@gmail.com> Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Oleg Ryjkov <oryjkov@gmail.com> Cc: stable@kernel.org
2010-03-02i2c-i801: Add Intel Cougar Point device IDsSeth Heasley1-1/+4
Add the Intel Cougar Point (PCH) SMBus controller device IDs. Signed-off-by: Seth Heasley <seth.heasley@intel.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2010-03-02i2c: Make PCI device ids constantMárton Németh1-1/+1
The id_table field of the struct pci_driver is constant in <linux/pci.h> so it is worth to make initialization data also constant. The semantic match that finds this kind of pattern is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r@ disable decl_init,const_decl_init; identifier I1, I2, x; @@ struct I1 { ... const struct I2 *x; ... }; @s@ identifier r.I1, y; identifier r.x, E; @@ struct I1 y = { .x = E, }; @c@ identifier r.I2; identifier s.E; @@ const struct I2 E[] = ... ; @depends on !c@ identifier r.I2; identifier s.E; @@ + const struct I2 E[] = ...; // </smpl> Signed-off-by: Márton Németh <nm127@freemail.hu> Cc: Julia Lawall <julia@diku.dk> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-12-06i2c-i801: Retry on lost arbitrationJean Delvare1-0/+3
The Intel 82801 is sometimes used on systems with a BMC connected. The BMC can access the SMBus, resulting in lost arbitration for the 82801. We should let i2c-core retry transactions for us in this case. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-10-05i2c: Hide probe errors caused by ACPI resource conflictsJean Delvare1-1/+3
When an ACPI resource conflict is detected, error messages are already printed by ACPI. There's no point in causing the driver core to print more error messages, so return one of the error codes for which no message is printed. This fixes bug #14293: http://bugzilla.kernel.org/show_bug.cgi?id=14293 Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-05-05i2c: Timeouts off by 1Roel Kluin1-4/+4
with while (timeout++ < MAX_TIMEOUT); timeout reaches MAX_TIMEOUT + 1 after the loop, so the tests below are off by one. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-03-30i2c-i801: Instantiate FSC hardware montioring chipsHans de Goede1-0/+77
Detect various FSC hwmon IC's based on DMI tables and then let the i2c-i801 driver instantiate the i2c client devices. Note that some of the info in the added table is indentical for all rows, still this is kept in the table to keep the code general and thus (hopefully) easily extensible in the future. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-01-26i2c: Delete many unused adapter IDsJean Delvare1-1/+0
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-01-07Input: apanel - convert to new i2c bindingJean Delvare1-1/+49
Convert the apanel driver to the new i2c device driver binding model, as the legacy model is going away soon. In the new model, the apanel driver is no longer scanning all the i2c adapters, instead the relevant bus driver (i2c-i801) is instantiating the device as needed. One side benefit is that the apanel driver will now load automatically on all systems where it is needed. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Stephen Hemminger <shemminger@linux-foundation.org>
2008-10-22i2c-i801: Add support for Intel Ibex PeakSeth Heasley1-0/+3
Adds the Intel Ibex Peak (PCH) SMBus Controller Device IDs. Signed-off-by: Seth Heasley <seth.heasley@intel.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-15i2c: Drop stray references to lm_sensorsJean Delvare1-2/+0
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-15i2c: Check for ACPI resource conflictsJean Delvare1-0/+5
Check for ACPI resource conflicts in i2c bus drivers. I've included all recent SMBus master drivers for PC hardware. I've voluntarily left out: * Drivers that don't run on PCs: they can't conflict with ACPI. * Bit-banged bus device drivers: it's very unlikely that ACPI would deal with such buses. Signed-off-by: Jean Delvare <jdelvare@suse.de>
2008-07-15i2c-i801: Fix handling of error conditionsJean Delvare1-98/+102
Move the check of pre-transaction and post-transaction conditions to separate functions, and adjust them a bit. Having dedicated functions for that ensures that errors are handled in a consistent way. Bit HOST_BUSY of the status register is read-only, so writing to it is certainly not going to clear it. If this bit is set then we simply don't want to start the transaction, as it means that somebody else (ACPI, SMM?) is already using the controller. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-15i2c-i801: Rename local variable temp to statusJean Delvare1-33/+33
"temp" isn't a terribly well chosen name for a local variable. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-15i2c-i801: Properly report bus arbitration lossJean Delvare1-6/+4
Bit BUS_ERR of the status register means that the ICH host controller lost the arbitration. Report this event as such. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-15i2c-i801: Remove verbose debugging messagesJean Delvare1-18/+0
Dumping the register values before and after every transaction was useful during driver development but now it's only spamming the log. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-15i2c: Let bus drivers add SPD to their classJean Delvare1-1/+1
Let general purpose I2C/SMBus bus drivers add SPD to their class. Once this is done, we will be able to tell the eeprom driver to only probe for SPD EEPROMs and similar on these buses. Note that I took a conservative approach here, adding I2C_CLASS_SPD to many drivers that have no idea whether they can host SPD EEPROMs or not. This is to make sure that the eeprom driver doesn't stop probing buses where SPD EEPROMs or equivalent live. So, bus driver maintainers and users should feel free to remove the SPD class from drivers those buses never have SPD EEPROMs or they don't want the eeprom driver to bind to them. Likewise, feel free to add the SPD class to any bus driver I might have missed. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-07-15i2c: Consistently reject unsupported transactionsJean Delvare1-1/+0
Many PC SMBus host controller drivers don't properly handle the case where they are requested to achieve a transaction they do not support. Update them so that the consistently print a warning message and return a single error value in this case. Signed-off-by: Jean Delvare <khali@linux-fr.org>
generated by cgit v1.2.3 (git 2.39.0) at 2025-09-25 15:41:31 +0300