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2019-05-24treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 114Thomas Gleixner
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 8 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190523091650.663497195@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-24treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 75Thomas Gleixner
Based on 1 normalized pattern(s): derived from gplv2+ licensed source [copyright] [c] [2008] [wondermedia] [technologies] [inc] this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 or at your option any later version as published by the free software foundation extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190520071900.028616342@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13Thomas Gleixner
Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not see http www gnu org licenses this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details [based] [from] [clk] [highbank] [c] you should have received a copy of the gnu general public license along with this program if not see http www gnu org licenses extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 355 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com> Reviewed-by: Steve Winslow <swinslow@gmail.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190519154041.837383322@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 4Thomas Gleixner
Based on 1 normalized pattern(s): licensed under gplv2 or later extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 118 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com> Reviewed-by: Steve Winslow <swinslow@gmail.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190519154040.961286471@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21treewide: Add SPDX license identifier - Makefile/KconfigThomas Gleixner
Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-09Merge branch 'i2c/for-5.2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c updates from Wolfram Sang: - API for late atomic transfers (e.g. to shut down via PMIC). We have a seperate callback now which is called under clearly defined conditions. In-kernel users are converted, too. - new driver for the AMD PCIe MP2 I2C controller - large refactoring for at91 and bcm-iproc (both gain slave support due to this) - and a good share of various driver improvements anf fixes * 'i2c/for-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (57 commits) dt-bindings: i2c: riic: document r7s9210 support i2c: imx-lpi2c: Use __maybe_unused instead of #if CONFIG_PM_SLEEP i2c-piix4: Add Hygon Dhyana SMBus support i2c: core: apply 'is_suspended' check for SMBus, too i2c: core: ratelimit 'transfer when suspended' errors i2c: iproc: Change driver to use 'BIT' macro i2c: riic: Add Runtime PM support i2c: mux: demux-pinctrl: use struct_size() in devm_kzalloc() i2c: mux: pca954x: allow management of device idle state via sysfs i2c: mux: pca9541: remove support for unused platform data i2c: mux: pca954x: remove support for unused platform data dt-bindings: i2c: i2c-mtk: add support for MT8516 i2c: axxia: use auto cmd for last message i2c: gpio: flag atomic capability if possible i2c: algo: bit: add flag to whitelist atomic transfers i2c: stu300: use xfer_atomic callback to bail out early i2c: ocores: enable atomic xfers i2c: ocores: refactor setup for polling i2c: tegra-bpmp: convert to use new atomic callbacks i2c: omap: Add the master_xfer_atomic hook ...
2019-05-08Merge tag 'usb-5.2-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB/PHY updates from Greg KH: "Here is the big set of USB and PHY driver patches for 5.2-rc1 There is the usual set of: - USB gadget updates - PHY driver updates and additions - USB serial driver updates and fixes - typec updates and new chips supported - mtu3 driver updates - xhci driver updates - other tiny driver updates Nothing really interesting, just constant forward progress. All of these have been in linux-next for a while with no reported issues. The usb-gadget and usb-serial trees were merged a bit "late", but both of them had been in linux-next before they got merged here last Friday" * tag 'usb-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (206 commits) USB: serial: f81232: implement break control USB: serial: f81232: add high baud rate support USB: serial: f81232: clear overrun flag USB: serial: f81232: fix interrupt worker not stop usb: dwc3: Rename DWC3_DCTL_LPM_ERRATA usb: dwc3: Fix default lpm_nyet_threshold value usb: dwc3: debug: Print GET_STATUS(device) tracepoint usb: dwc3: Do core validation early on probe usb: dwc3: gadget: Set lpm_capable usb: gadget: atmel: tie wake lock to running clock usb: gadget: atmel: support USB suspend usb: gadget: atmel_usba_udc: simplify setting of interrupt-enabled mask dwc2: gadget: Fix completed transfer size calculation in DDMA usb: dwc2: Set lpm mode parameters depend on HW configuration usb: dwc2: Fix channel disable flow usb: dwc2: Set actual frame number for completed ISOC transfer usb: gadget: do not use __constant_cpu_to_le16 usb: dwc2: gadget: Increase descriptors count for ISOC's usb: introduce usb_ep_type_string() function usb: dwc3: move synchronize_irq() out of the spinlock protected block ...
2019-05-03Merge 5.1-rc7 into usb-nextGreg Kroah-Hartman
We need this to make the usb-gadget branch merge cleaner. And for testing to keep from hitting the same issues already fixed. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-03i2c: imx-lpi2c: Use __maybe_unused instead of #if CONFIG_PM_SLEEPAnson Huang
Use __maybe_unused for power management related functions instead of #if CONFIG_PM_SLEEP to simply the code. Signed-off-by: Anson Huang <Anson.Huang@nxp.com> Acked-by: Dong Aisheng <aisheng.dong@nxp.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-05-03i2c-piix4: Add Hygon Dhyana SMBus supportPu Wen
The Hygon Dhyana CPU has the SMBus device with PCI device ID 0x790b, which is the same as AMD CZ SMBus device. So add Hygon Dhyana support to the i2c-piix4 driver by using the code path of AMD. Signed-off-by: Pu Wen <puwen@hygon.cn> Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-05-03Merge branch 'i2c-mux/for-next' of https://github.com/peda-r/i2c-mux into ↵Wolfram Sang
i2c/for-5.2 Mainly some pca954x work, i.e. removal of unused platform data support and added support for sysfs interface for manipulating/examining the idle state. And then a mechanical cocci-style patch.
2019-05-02i2c: synquacer: fix enumeration of slave devicesArd Biesheuvel
The I2C host driver for SynQuacer fails to populate the of_node and ACPI companion fields of the struct i2c_adapter it instantiates, resulting in enumeration of the subordinate I2C bus to fail. Fixes: 0d676a6c4390 ("i2c: add support for Socionext SynQuacer I2C controller") Cc: <stable@vger.kernel.org> # v4.19+ Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-05-02i2c: designware: ratelimit 'transfer when suspended' errorsWolfram Sang
There are two problems with dev_err() here. One: It is not ratelimited. Two: We don't see which driver tried to transfer something with a suspended adapter. Switch to dev_WARN_ONCE to fix both issues. Drawback is that we don't see if multiple drivers are trying to transfer while suspended. They need to be discovered one after the other now. This is better than a high CPU load because a really broken driver might try to resend endlessly. Link: https://bugs.archlinux.org/task/62391 Fixes: 275154155538 ("i2c: designware: Do not allow i2c_dw_xfer() calls while suspended") Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reported-by: skidnik <skidnik@gmail.com> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Tested-by: skidnik <skidnik@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-04-25i2c: nvidia-gpu: Supply CCGx driver the fw build infoAjay Gupta
Adding device property "ccgx,firmware-build" for the CCGx device, so the CCGx driver knows which firmware binary to use for a specific vendor. Suggested-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Ajay Gupta <ajayg@nvidia.com> Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-04-24i2c: imx: correct the method of getting private data in notifier_callAnson Huang
The way of getting private imx_i2c_struct in i2c_imx_clk_notifier_call() is incorrect, should use clk_change_nb element to get correct address and avoid below kernel dump during POST_RATE_CHANGE notify by clk framework: Unable to handle kernel paging request at virtual address 03ef1488 pgd = (ptrval) [03ef1488] *pgd=00000000 Internal error: Oops: 5 [#1] PREEMPT SMP ARM Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree) Workqueue: events reduce_bus_freq_handler PC is at i2c_imx_set_clk+0x10/0xb8 LR is at i2c_imx_clk_notifier_call+0x20/0x28 pc : [<806a893c>] lr : [<806a8a04>] psr: a0080013 sp : bf399dd8 ip : bf3432ac fp : bf7c1dc0 r10: 00000002 r9 : 00000000 r8 : 00000000 r7 : 03ef1480 r6 : bf399e50 r5 : ffffffff r4 : 00000000 r3 : bf025300 r2 : bf399e50 r1 : 00b71b00 r0 : bf399be8 Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none Control: 10c5387d Table: 4e03004a DAC: 00000051 Process kworker/2:1 (pid: 38, stack limit = 0x(ptrval)) Stack: (0xbf399dd8 to 0xbf39a000) 9dc0: 806a89e4 00000000 9de0: ffffffff bf399e50 00000002 806a8a04 806a89e4 80142900 ffffffff 00000000 9e00: bf34ef18 bf34ef04 00000000 ffffffff bf399e50 80142d84 00000000 bf399e6c 9e20: bf34ef00 80f214c4 bf025300 00000002 80f08d08 bf017480 00000000 80142df0 9e40: 00000000 80166ed8 80c27638 8045de58 bf352340 03ef1480 00b71b00 0f82e242 9e60: bf025300 00000002 03ef1480 80f60e5c 00000001 8045edf0 00000002 8045eb08 9e80: bf025300 00000002 03ef1480 8045ee10 03ef1480 8045eb08 bf01be40 00000002 9ea0: 03ef1480 8045ee10 07de2900 8045eb08 bf01b780 00000002 07de2900 8045ee10 9ec0: 80c27898 bf399ee4 bf020a80 00000002 1f78a400 8045ee10 80f60e5c 80460514 9ee0: 80f60e5c bf01b600 bf01b480 80460460 0f82e242 bf383a80 bf383a00 80f60e5c 9f00: 00000000 bf7c1dc0 80f60e70 80460564 80f60df0 80f60d24 80f60df0 8011e72c 9f20: 00000000 80f60df0 80f60e6c bf7c4f00 00000000 8011e7ac bf274000 8013bd84 9f40: bf7c1dd8 80f03d00 bf274000 bf7c1dc0 bf274014 bf7c1dd8 80f03d00 bf398000 9f60: 00000008 8013bfb4 00000000 bf25d100 bf25d0c0 00000000 bf274000 8013bf88 9f80: bf25d11c bf0cfebc 00000000 8014140c bf25d0c0 801412ec 00000000 00000000 9fa0: 00000000 00000000 00000000 801010e8 00000000 00000000 00000000 00000000 9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 9fe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000 [<806a893c>] (i2c_imx_set_clk) from [<806a8a04>] (i2c_imx_clk_notifier_call+0x20/0x28) [<806a8a04>] (i2c_imx_clk_notifier_call) from [<80142900>] (notifier_call_chain+0x44/0x84) [<80142900>] (notifier_call_chain) from [<80142d84>] (__srcu_notifier_call_chain+0x44/0x98) [<80142d84>] (__srcu_notifier_call_chain) from [<80142df0>] (srcu_notifier_call_chain+0x18/0x20) [<80142df0>] (srcu_notifier_call_chain) from [<8045de58>] (__clk_notify+0x78/0xa4) [<8045de58>] (__clk_notify) from [<8045edf0>] (__clk_recalc_rates+0x60/0xb4) [<8045edf0>] (__clk_recalc_rates) from [<8045ee10>] (__clk_recalc_rates+0x80/0xb4) Code: e92d40f8 e5903298 e59072a0 e1530001 (e5975008) ---[ end trace fc7f5514b97b6cbb ]--- Fixes: 90ad2cbe88c2 ("i2c: imx: use clk notifier for rate changes") Signed-off-by: Anson Huang <Anson.Huang@nxp.com> Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Cc: stable@kernel.org
2019-04-23i2c: iproc: Change driver to use 'BIT' macroRay Jui
Change the iProc I2C driver to use the 'BIT' macro from all '1 << XXX' bit operations to get rid of compiler warning and improve readability of the code Signed-off-by: Ray Jui <ray.jui@broadcom.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-04-23i2c: riic: Add Runtime PM supportGeert Uytterhoeven
- Replace explicit clock handling by Runtime PM calls, - Streamline Runtime PM handling in error paths, - Enable Runtime PM in .probe(), - Disable Runtime PM in .remove(), - Make sure the device is runtime-resumed when disabling interrupts in .remove(). Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Tested-by: Chris Brandt <chris.brandt@renesas.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-04-16i2c: axxia: use auto cmd for last messageAdamski, Krzysztof (Nokia - PL/Wroclaw)
Some recent commits to this driver were trying to make sure the TSS interrupt is not generated on busy system due to 25ms timer expiring between commands. It can still happen, however if STOP command is not issued on time at the end of the transmission. If wait_for_completion in axxia_i2c_xfer_msg() would not return after 25ms of getting an interrupt, TSS will be generated and idev->err_msg will be set to -ETIMEDOUT which will be returned from the axxia_i2c_xfer_msg(), even though the transfer did actually succeed (STOP is automatically issued when TSS triggers). Fortunately, apart from already used manual and sequence commands, the controller also has so called auto command. It works just like manual mode but it but an automatic STOP is issued when either transfer length is met or NAK is received from slave device. This patch changes the axxia_i2c_xfer_msg() function so that auto command is used for last message in transaction letting hardware manage issuing STOP. TSS is disabled just after command transferring last message finishes. Auto command, just like sequence, ends with SS interrupt instead of SNS so handling of both had to be unified. The axxia_i2c_stop() is no longer needed as the transfer can only end with following conditions: - fully successful - then last message was send by AUTO command and STOP was issued automatically - NAK received - STOP is issued automatically by controller - arbitration lost - STOP should not be issued as we don't control the bus - IP interrupt received - this is sent when transfer length is set to 0 for auto/sequence command. The check for that is done before START is send so no STOP is required - TSS received between commands - STOP is issued by the controller Signed-off-by: Krzysztof Adamski <krzysztof.adamski@nokia.com> Reviewed-by: Alexander Sverdlin <alexander.sverdlin@nokia.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-04-16i2c: gpio: flag atomic capability if possibleWolfram Sang
If switching GPIOs does not sleep, then we can support atomic transfers. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-04-16i2c: stu300: use xfer_atomic callback to bail out earlyWolfram Sang
Use the new callback to reject atomic transfers. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-04-16i2c: ocores: enable atomic xfersWolfram Sang
The driver already has the routine in place, tie it to the new callback. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Cc: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-04-16i2c: ocores: refactor setup for pollingWolfram Sang
By properly setting up the algorithm at probe time, we can skip the check at every transfer. This allows us to get rid of the flags completely. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Cc: Andrew Lunn <andrew@lunn.ch> Acked-by: Peter Korsgaard <peter@korsgaard.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-04-16i2c: tegra-bpmp: convert to use new atomic callbacksWolfram Sang
The driver did handle this internally, convert it to use the new callbacks. Reviewed-by: Timo Alho <talho@nvidia.com> Acked-by: Thierry Reding <treding@nvidia.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-04-16i2c: omap: Add the master_xfer_atomic hookWolfram Sang
Add the master_xfer_atomic hook to enable i2c transactions in irq disabled contexts like the poweroff case. Signed-off-by: Tero Kristo <t-kristo@ti.com> Signed-off-by: Keerthy <j-keerthy@ti.com> [wsa: simplified code a little: 'timeout = !ret'] Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-04-15i2c: brcmstb: remove unused struct memberWolfram Sang
No further occurences in the driver. Fixes: dd1aa2524bc5 ("i2c: brcmstb: Add Broadcom settop SoC i2c controller driver") Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-04-15i2c: mediatek: Add i2c support for MediaTek MT8183Qii Wang
Add i2c compatible for MT8183. Compare to MT2712 i2c controller, MT8183 has different register offsets. Ltiming_reg is added to adjust low width of SCL. Arb clock and dma_sync are needed. Signed-off-by: Qii Wang <qii.wang@mediatek.com> Reviewed-by: Nicolas Boichat <drinkcat@chromium.org> Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-04-15i2c: mediatek: Add i2c and apdma sync in i2c driverQii Wang
When i2c and apdma use different source clocks, we should enable synchronization between them. Signed-off-by: Qii Wang <qii.wang@mediatek.com> Reviewed-by: Nicolas Boichat <drinkcat@chromium.org> Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-04-15i2c: mediatek: Add arb clock in i2c driverQii Wang
When two i2c controllers are internally connected to the same GPIO pins, the arb clock is needed to ensure that the waveforms do not interfere with each other. And we also need to enable the interrupt to find arb lost, old i2c controllers also have the bit. Signed-off-by: Qii Wang <qii.wang@mediatek.com> Reviewed-by: Nicolas Boichat <drinkcat@chromium.org> Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-04-15i2c: mediatek: Add offsets array for new i2c registersQii Wang
New i2c registers would have different offsets, so we use different offsets array to distinguish different i2c registers version. Signed-off-by: Qii Wang <qii.wang@mediatek.com> Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-04-06i2c: imx: don't leak the i2c adapter on errorLaurentiu Tudor
Make sure to free the i2c adapter on the error exit path. Signed-off-by: Laurentiu Tudor <laurentiu.tudor@nxp.com> Reviewed-by: Mukesh Ojha <mojha@codeaurora.org> Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Fixes: e1ab9a468e3b ("i2c: imx: improve the error handling in i2c_imx_dma_request()") Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-04-03i2c: isch: Remove unnecessary acpi.h includeBjorn Helgaas
Commit 54fb4a05af0a ("i2c: Check for ACPI resource conflicts") included <linux/acpi.h> so we could use acpi_check_region(). Commit fd46a0064af1 ("i2c: convert i2c-isch to platform_device") removed the use of acpi_check_region() but not the include. Remove the now-unnecessary include of <linux/acpi.h>. No functional change intended. Fixes: fd46a0064af1 ("i2c: convert i2c-isch to platform_device") Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Jean Delvare <jdelvare@suse.de> Reviewed-by: Mukesh Ojha <mojha@codeaurora.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-04-03i2c: nomadik: remove an unnecessary NULL check in nmk_i2c_remove()Dan Carpenter
"res" can't be NULL because it's a pointer to somewhere in the middle of the "adev" struct. Also probe() succeeded so there is no need to check here. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-04-03i2c: iproc: add NIC I2C supportRayagonda Kokatanur
Add NIC I2C support to the iProc I2C driver. Access to the NIC I2C base registers requires going through the IDM wrapper to map into the NIC's address space Signed-off-by: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com> Signed-off-by: Ray Jui <ray.jui@broadcom.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-04-03i2c: iproc: use wrapper for read/write accessRayagonda Kokatanur
Use the following wrapper for read/write access of iProc i2c registers: u32 iproc_i2c_rd_reg(struct bcm_iproc_i2c_dev *iproc_i2c, u32 offset) void iproc_i2c_wr_reg(struct bcm_iproc_i2c_dev *iproc_i2c, u32 offset, u32 val) This preps the driver for support of indirect register access required by certain SoCs with this iProc I2C block integrated Signed-off-by: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com> Signed-off-by: Ray Jui <ray.jui@broadcom.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-04-03i2c: iproc: add polling supportRayagonda Kokatanur
Add polling support to the iProc I2C driver. Polling mode is activated when the driver fails to obtain an interrupt ID from device tree Signed-off-by: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com> Signed-off-by: Ray Jui <ray.jui@broadcom.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-04-03i2c: iproc: Add support for more master error statusMichael Cheng
Add support for more master error status including FIFO underrun and RX FIFO full Signed-off-by: Michael Cheng <ccheng@broadcom.com> Signed-off-by: Ray Jui <ray.jui@broadcom.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-04-03i2c: iproc: Add slave mode supportShreesha Rajashekar
Add slave mode support to the iProc I2C driver. Signed-off-by: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com> Signed-off-by: Michael Cheng <ccheng@broadcom.com> Signed-off-by: Shreesha Rajashekar <shreesha.rajashekar@broadcom.com> Signed-off-by: Ray Jui <ray.jui@broadcom.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-04-03i2c: iproc: Extend I2C read up to 255 bytesShreesha Rajashekar
Add support to allow I2C master read transfer up to 255 bytes. Signed-off-by: Shreesha Rajashekar <shreesha@broadcom.com> Signed-off-by: Rayagonda Kokatanur <rayagonda.kokatanur@broadcom.com> Signed-off-by: Ray Jui <ray.jui@broadcom.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-03-27i2c: at91: Convert to use struct i2c_timingsAndy Shevchenko
Instead of using custom variables and parser, convert the driver to use the ones provided by I2C core. No functional change intended. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-03-25i2c: Add drivers for the AMD PCIe MP2 I2C controllerElie Morisse
MP2 controllers have two separate busses, so may accommodate up to two I2C adapters. Those adapters are listed in the ACPI namespace with the "AMDI0011" HID, and probed by a platform driver. Communication with the MP2 takes place through MMIO registers, or through DMA for more than 32 bytes transfers. This is major rework of the patch submitted by Nehal-bakulchandra Shah from AMD (https://patchwork.kernel.org/patch/10597369/). Most of the event handling of v3 was rewritten to make it work with more than one bus (e.g on Ryzen-based Lenovo Yoga 530), and this version contains many other improvements. Signed-off-by: Elie Morisse <syniurge@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-03-24i2c: at91: added slave mode supportJuergen Fitschen
Slave mode driver is based on the concept of i2c-designware driver. Signed-off-by: Juergen Fitschen <me@jue.yt> [ludovic.desroches@microchip.com: rework Kconfig and replace IS_ENABLED by defined] Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-03-24i2c: at91: split driver into core and master fileJuergen Fitschen
The single file i2c-at91.c has been split into core code (i2c-at91-core.c) and master mode specific code (i2c-at91-master.c). This should enhance maintainability and reduce ifdeffery for slave mode related code. The code itself hasn't been touched. Shared functions only had to be made non-static. Furthermore, includes have been cleaned up. Signed-off-by: Juergen Fitschen <me@jue.yt> [ludovic.desroches@microchip.com: fix checkpatch errors and use SPDX] Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-03-24i2c: at91: segregate master mode specific code from probe and init funcJuergen Fitschen
In order to implement slave mode support for the at91 hardware we have to segregate all master mode specific function parts from the general parts. The upcoming slave mode patch will call its sepcific probe resp. init function instead of the master mode functions after the shared general code has been executed. This concept has been influenced by the i2c-designware driver. Signed-off-by: Juergen Fitschen <me@jue.yt> Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-03-20i2c: rcar: wait for data empty before starting DMAWolfram Sang
When sending with DMA, the driver transfers the first byte with PIO (as documented). However, it started DMA right after the first byte was written. This worked, but was not according to the datasheet which suggests to wait until data register was empty again. Implement this. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-03-20i2c: rcar: let DMA enable routine return success statusWolfram Sang
We will need to know if enabling DMA was successful in a later patch. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-03-20i2c: rcar: sanity check for minimal DMA lengthWolfram Sang
Use a macro for the hardcoded value and apply a build check. If it is not met, the driver logic will not work anymore. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-03-20i2c: i2c-stm32f7: improve loopback in timing algorithmNicolas Le Bayon
This avoids useless loops inside the I2C timing algorithm. Actually, we support only one possible solution per prescaler value. So after finding a solution with a prescaler, the algorithm can switch directly to the next prescaler value. Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com> Signed-off-by: Bich Hemon <bich.hemon@st.com> Reviewed-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-03-20i2c: designware: Add support for an interface clockPhil Edworthy
The Synopsys I2C Controller has an interface clock, but most SoCs hide this away. However, on some SoCs you need to explicitly enable the interface clock in order to access the registers. Therefore, add support for an optional interface clock. Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com> Signed-off-by: Gareth Williams <gareth.williams.jx@renesas.com> Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Tested-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-03-20i2c: i801: Add support for Intel Comet LakeJarkko Nikula
Add PCI ID for Intel Comet Lake PCH. Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2019-03-13i2c: i2c-designware-platdrv: Always use a dynamic adapter numberHans de Goede
Before this commit the i2c-designware-platdrv assumes that if the pdev has an apci-companion it should use a dynamic adapter-nr and it sets adapter->nr to -1, otherwise it will use pdev->id as adapter->nr. There are 3 ways how platform_device-s to which i2c-designware-platdrv will bind can be instantiated: 1) Through of / devicetree 2) Through ACPI enumeration 3) Explicitly instantiated through platform_device_create + add 1) In case of devicetree-instantiation the drivers/of code always sets pdev->id to PLATFORM_DEVID_NONE, which is -1 so in this case both paths to set adapter->nr end up doing the same thing. 2) In case of ACPI instantiation the device will always have an ACPI-companion, so we are already using dynamic adapter-nrs. 3) There are 2 places manually instantiating a designware_i2c platform_dev: drivers/mfd/intel_quark_i2c_gpio.c drivers/mfd/intel-lpss.c In the intel_quark_i2c_gpio.c case pdev->id is always 0, so switching to dynamic adapter-nrs here could lead to the bus-number no longer being stable, but the quark X1000 only has 1 i2c-controller, which will also be assigned bus-number 0 when using dynamic adapter-nrs. In the intel-lpss.c case intel_lpss_probe() is called from either intel-lpss-acpi.c in which case there always is an ACPI-companion, or from intel-lpss-pci.c. In most cases devices handled by intel-lpss-pci.c also have an ACPI-companion, so we use a dynamic adapter-nr. But in some cases the ACPI-companion is missing and we would use pdev->id (allocated from intel_lpss_devid_ida). Devices which use the intel-lpss-pci.c code typically have many i2c busses, so using pdev->id in this case may lead to a bus-number conflict, triggering a WARN(id < 0, "couldn't get idr") in i2c-core-base.c causing an oops an the adapter registration to fail. So in this case using non dynamic adapter-nrs is actually undesirable. One machine on which this oops was triggering is the Apollo Lake based Acer TravelMate Spin B118. TL;DR: Switching to always using dynamic adapter-numbers does not make any difference in most cases and in the one case where it does make a difference the behavior change is desirable because the old behavior caused an oops. BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1687065 Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
generated by cgit (git 2.34.1) at 2025-04-07 16:16:34 +0000