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path: root/drivers/hid/intel-ish-hid
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2022-03-14HID: intel-ish-hid: Use dma_alloc_coherent for firmware updateGwendal Grignou1-26/+3
Allocating memory with kmalloc and GPF_DMA32 is not allowed, the allocator will ignore the attribute. Instead, use dma_alloc_coherent() API as we allocate a small amount of memory to transfer firmware fragment to the ISH. On Arcada chromebook, after the patch the warning: "Unexpected gfp: 0x4 (GFP_DMA32). Fixing up to gfp: 0xcc0 (GFP_KERNEL). Fix your code!" is gone. The ISH firmware is loaded properly and we can interact with the ISH: > ectool --name cros_ish version ... Build info: arcada_ish_v2.0.3661+3c1a1c1ae0 2022-02-08 05:37:47 @localhost Tool version: v2.0.12300-900b03ec7f 2022-02-08 10:01:48 @localhost Fixes: commit 91b228107da3 ("HID: intel-ish-hid: ISH firmware loader client driver") Signed-off-by: Gwendal Grignou <gwendal@chromium.org> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: stable@vger.kernel.org Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2022-01-06HID: intel-ish-hid: ishtp-fw-loader: Fix a kernel-doc formatting issueYang Li1-1/+2
This function had kernel-doc that not used a hash to separate the function name from the one line description. The warning was found by running scripts/kernel-doc, which is caused by using 'make W=1'. drivers/hid/intel-ish-hid/ishtp-fw-loader.c:271: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst Reported-by: Abaci Robot <abaci@linux.alibaba.com> Signed-off-by: Yang Li <yang.lee@linux.alibaba.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2022-01-06HID: intel-ish-hid: ipc: Specify no cache snooping on TGL and ADLYe Xiang1-1/+5
Specify that both TGL and ADL don't support DMA cache snooping. Signed-off-by: Ye Xiang <xiang.ye@intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2021-12-03HID: intel-ish-hid: ipc: only enable IRQ wakeup when requestedThomas Weißschuh1-2/+4
Fixes spurious wakeups from s0ix on Lenovo ThinkPad X1 Cargon Gen 9 on lid close. These wakeups are generated by interrupts from the ISH on changes to the lid status. By disabling the wake IRQ from the ISH we inhibit these spurious wakeups while keeping the resume from LID open through the ACPI interrupt. Reports on the Lenovo forums indicate that Lenovo ThinkPad X1 Yoga Gen6 is also affected. Fixes: ae02e5d40d5f ("HID: intel-ish-hid: ipc layer") BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=214855 Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Link: https://lore.kernel.org/r/20211130060117.3026-1-linux@weissschuh.net
2021-11-12HID: intel-ish-hid: fix module device-id handlingArnd Bergmann3-23/+17
A late addititon to the intel-ish-hid framework caused a build failure with clang, and introduced an ABI to the module loader that stops working if any driver ever needs to bind to more than one UUID: drivers/hid/intel-ish-hid/ishtp-fw-loader.c:1067:4: error: initializer element is not a compile-time constant Change the ishtp_device_id to have correct documentation and a driver_data field like all the other ones, and change the drivers to use the ID table as the primary identification in a way that works with all compilers and avoids duplciating the identifiers. Fixes: f155dfeaa4ee ("platform/x86: isthp_eclite: only load for matching devices") Fixes: facfe0a4fdce ("platform/chrome: chros_ec_ishtp: only load for matching devices") Fixes: 0d0cccc0fd83 ("HID: intel-ish-hid: hid-client: only load for matching devices") Fixes: 44e2a58cb880 ("HID: intel-ish-hid: fw-loader: only load for matching devices") Fixes: cb1a2c6847f7 ("HID: intel-ish-hid: use constants for modaliases") Fixes: fa443bc3c1e4 ("HID: intel-ish-hid: add support for MODULE_DEVICE_TABLE()") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Hans de Goede <hdegoede@redhat.com> [jkosina@suse.cz: fix ecl_ishtp_cl_driver.id initialization] [jkosina@suse.cz: fix conflict with already fixed kerneldoc] Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2021-11-09HID: intel-ish-hid: hid-client: only load for matching devicesThomas Weißschuh1-1/+6
Previously it was loaded for all ISHTP devices. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2021-11-09HID: intel-ish-hid: fw-loader: only load for matching devicesThomas Weißschuh1-1/+6
Previously it was loaded for all ISHTP devices. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2021-11-09HID: intel-ish-hid: use constants for modaliasesThomas Weißschuh1-2/+2
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2021-08-09Merge 5.14-rc5 into driver-core-nextGreg Kroah-Hartman3-8/+37
We need the driver core fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-21bus: Make remove callback return voidUwe Kleine-König1-3/+1
The driver core ignores the return value of this callback because there is only little it can do when a device disappears. This is the final bit of a long lasting cleanup quest where several buses were converted to also return void from their remove callback. Additionally some resource leaks were fixed that were caused by drivers returning an error code in the expectation that the driver won't go away. With struct bus_type::remove returning void it's prevented that newly implemented buses return an ignored error code and so don't anticipate wrong expectations for driver authors. Reviewed-by: Tom Rix <trix@redhat.com> (For fpga) Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Reviewed-by: Cornelia Huck <cohuck@redhat.com> (For drivers/s390 and drivers/vfio) Acked-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> (For ARM, Amba and related parts) Acked-by: Mark Brown <broonie@kernel.org> Acked-by: Chen-Yu Tsai <wens@csie.org> (for sunxi-rsb) Acked-by: Pali Rohár <pali@kernel.org> Acked-by: Mauro Carvalho Chehab <mchehab@kernel.org> (for media) Acked-by: Hans de Goede <hdegoede@redhat.com> (For drivers/platform) Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Acked-By: Vinod Koul <vkoul@kernel.org> Acked-by: Juergen Gross <jgross@suse.com> (For xen) Acked-by: Lee Jones <lee.jones@linaro.org> (For mfd) Acked-by: Johannes Thumshirn <jth@kernel.org> (For mcb) Acked-by: Johan Hovold <johan@kernel.org> Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> (For slimbus) Acked-by: Kirti Wankhede <kwankhede@nvidia.com> (For vfio) Acked-by: Maximilian Luz <luzmaximilian@gmail.com> Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> (For ulpi and typec) Acked-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com> (For ipack) Acked-by: Geoff Levand <geoff@infradead.org> (For ps3) Acked-by: Yehezkel Bernat <YehezkelShB@gmail.com> (For thunderbolt) Acked-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> (For intel_th) Acked-by: Dominik Brodowski <linux@dominikbrodowski.net> (For pcmcia) Acked-by: Rafael J. Wysocki <rafael@kernel.org> (For ACPI) Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> (rpmsg and apr) Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> (For intel-ish-hid) Acked-by: Dan Williams <dan.j.williams@intel.com> (For CXL, DAX, and NVDIMM) Acked-by: William Breathitt Gray <vilhelm.gray@gmail.com> (For isa) Acked-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (For firewire) Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> (For hid) Acked-by: Thorsten Scherer <t.scherer@eckelmann.de> (For siox) Acked-by: Sven Van Asbroeck <TheSven73@gmail.com> (For anybuss) Acked-by: Ulf Hansson <ulf.hansson@linaro.org> (For MMC) Acked-by: Wolfram Sang <wsa@kernel.org> # for I2C Acked-by: Sudeep Holla <sudeep.holla@arm.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Acked-by: Finn Thain <fthain@linux-m68k.org> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Link: https://lore.kernel.org/r/20210713193522.1770306-6-u.kleine-koenig@pengutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-15HID: intel-ish-hid: use async resume functionYe Xiang3-8/+37
ISH IPC driver uses asynchronous workqueue to do resume now, but there is a potential timing issue: when child devices resume before bus driver, it will cause child devices resume failed and cannot be recovered until reboot. The current implementation in this case do wait for IPC to resume but fail to accommodate for a case when there is no ISH reboot and soft resume is taking time. This issue is apparent on Tiger Lake platform with 5.11.13 kernel when doing suspend to idle then resume(s0ix) test. To resolve this issue, we change ISHTP HID client to use asynchronous resume callback too. In the asynchronous resume callback, it waits for the ISHTP resume done event, and then notify ISHTP HID client link ready. Signed-off-by: Ye Xiang <xiang.ye@intel.com> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2021-06-30Merge branch 'for-5.14/intel-ish' into for-linusJiri Kosina12-66/+104
- support for ISH DMA on EHL platform from Even Xu - various code style fixes and cleanups from Lee Jones and Uwe Kleine-König
2021-06-14HID: intel-ish-hid: ipc: Specify that EHL no cache snoopingEven Xu1-1/+25
Specify that EHL doesn't support DMA cache snooping. Acked-by: Pandruvada, Srinivas <srinivas.pandruvada@intel.com> Signed-off-by: Even Xu <even.xu@intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2021-06-14HID: intel-ish-hid: ishtp: Add dma_no_cache_snooping() callbackEven Xu2-0/+19
Different platforms have different DMA capability, on most of platforms, DMA support cache snooping. But few platforms, such as ElkhartLake (EHL), don't support cache snooping which requires cache flush from driver. So add a hardware level callback to let ishtp driver know if cache flush is needed. As most of platform support cache snooping, so driver will not do cache flush by default, until platform implements this callback and return true explicitly. Acked-by: Pandruvada, Srinivas <srinivas.pandruvada@intel.com> Signed-off-by: Even Xu <even.xu@intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2021-06-14HID: intel-ish-hid: Set ISH driver depends on x86Even Xu1-0/+1
During ISH DMA enabling, some platforms (such as EHL) don't support cache snooping, driver needs involve clflush_cache_range API which isn't supported by all archs (such as ARM). Considering ISH only exists on Intel platforms, add the dependence in Kconfig to avoid build warnings or errors on other archs. Acked-by: Pandruvada, Srinivas <srinivas.pandruvada@intel.com> Signed-off-by: Even Xu <even.xu@intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2021-06-14HID: intel-ish-hid: Fix minor typos in commentsAustin Kim1-1/+1
Change "poiner" to "pointer" in comments. Signed-off-by: Austin Kim <austindh.kim@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2021-05-27HID: intel-ish-hid: ipc: Add Alder Lake device IDsYe Xiang2-0/+4
Add Alder Lake PCI device IDs to the supported device list. Signed-off-by: Ye Xiang <xiang.ye@intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2021-04-07HID: ishtp-hid-client: Fix 'suggest-attribute=format' compiler warningLee Jones4-8/+8
Fixes the following W=1 kernel build warning(s): drivers/hid/intel-ish-hid/ishtp/bus.c: In function ‘ishtp_trace_callback’: drivers/hid/intel-ish-hid/ishtp/bus.c:876:29: warning: return type might be a candidate for a format attribute [-Wsuggest-attribute=format] 876 | return cl_device->ishtp_dev->print_log; | ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~ Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: Jiri Kosina <jikos@kernel.org> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: Daniel Drubin <daniel.drubin@intel.com> Cc: linux-input@vger.kernel.org Suggested-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Lee Jones <lee.jones@linaro.org> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
2021-04-07HID: intel-ish-hid: ishtp-fw-loader: Fix a bunch of formatting issuesLee Jones1-22/+23
And demote non-conformant header Fixes the following W=1 kernel build warning(s): drivers/hid/intel-ish-hid/ishtp-fw-loader.c:46: warning: Enum value 'LOADER_CMD_XFER_QUERY' not described in enum 'ish_loader_commands' drivers/hid/intel-ish-hid/ishtp-fw-loader.c:46: warning: Enum value 'LOADER_CMD_XFER_FRAGMENT' not described in enum 'ish_loader_commands' drivers/hid/intel-ish-hid/ishtp-fw-loader.c:46: warning: Enum value 'LOADER_CMD_START' not described in enum 'ish_loader_commands' drivers/hid/intel-ish-hid/ishtp-fw-loader.c:108: warning: Function parameter or member 'reserved' not described in 'loader_msg_hdr' drivers/hid/intel-ish-hid/ishtp-fw-loader.c:196: warning: Function parameter or member 'data' not described in 'response_info' drivers/hid/intel-ish-hid/ishtp-fw-loader.c:196: warning: Function parameter or member 'max_size' not described in 'response_info' drivers/hid/intel-ish-hid/ishtp-fw-loader.c:196: warning: Function parameter or member 'size' not described in 'response_info' drivers/hid/intel-ish-hid/ishtp-fw-loader.c:196: warning: Function parameter or member 'error' not described in 'response_info' drivers/hid/intel-ish-hid/ishtp-fw-loader.c:196: warning: Function parameter or member 'received' not described in 'response_info' drivers/hid/intel-ish-hid/ishtp-fw-loader.c:196: warning: Function parameter or member 'wait_queue' not described in 'response_info' drivers/hid/intel-ish-hid/ishtp-fw-loader.c:233: warning: Function parameter or member 'loader_ishtp_cl' not described in 'ishtp_cl_data' drivers/hid/intel-ish-hid/ishtp-fw-loader.c:233: warning: Function parameter or member 'cl_device' not described in 'ishtp_cl_data' drivers/hid/intel-ish-hid/ishtp-fw-loader.c:233: warning: Function parameter or member 'response' not described in 'ishtp_cl_data' drivers/hid/intel-ish-hid/ishtp-fw-loader.c:233: warning: Function parameter or member 'flag_retry' not described in 'ishtp_cl_data' drivers/hid/intel-ish-hid/ishtp-fw-loader.c:233: warning: Function parameter or member 'retry_count' not described in 'ishtp_cl_data' drivers/hid/intel-ish-hid/ishtp-fw-loader.c:252: warning: Function parameter or member 'client_data' not described in 'get_firmware_variant' drivers/hid/intel-ish-hid/ishtp-fw-loader.c:252: warning: Function parameter or member 'filename' not described in 'get_firmware_variant' drivers/hid/intel-ish-hid/ishtp-fw-loader.c:281: warning: Function parameter or member 'out_msg' not described in 'loader_cl_send' drivers/hid/intel-ish-hid/ishtp-fw-loader.c:281: warning: Function parameter or member 'out_size' not described in 'loader_cl_send' drivers/hid/intel-ish-hid/ishtp-fw-loader.c:281: warning: Function parameter or member 'in_msg' not described in 'loader_cl_send' drivers/hid/intel-ish-hid/ishtp-fw-loader.c:281: warning: Function parameter or member 'in_size' not described in 'loader_cl_send' drivers/hid/intel-ish-hid/ishtp-fw-loader.c:281: warning: expecting prototype for Send message from host to firmware(). Prototype was for loader_cl_send() instead drivers/hid/intel-ish-hid/ishtp-fw-loader.c:445: warning: Function parameter or member 'cl_device' not described in 'loader_cl_event_cb' drivers/hid/intel-ish-hid/ishtp-fw-loader.c:445: warning: Excess function parameter 'device' description in 'loader_cl_event_cb' drivers/hid/intel-ish-hid/ishtp-fw-loader.c:551: warning: expecting prototype for Loads ISH firmware using ishtp interface(). Prototype was for ish_fw_xfer_ishtp() instead drivers/hid/intel-ish-hid/ishtp-fw-loader.c:745: warning: expecting prototype for Start executing ISH main firmware(). Prototype was for ish_fw_start() instead drivers/hid/intel-ish-hid/ishtp-fw-loader.c:767: warning: expecting prototype for Loads ISH firmware from host(). Prototype was for load_fw_from_host() instead Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: Jiri Kosina <jikos@kernel.org> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: "Christian König" <christian.koenig@amd.com> Cc: Rushikesh S Kadam <rushikesh.s.kadam@intel.com> Cc: linux-input@vger.kernel.org Cc: linux-media@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Cc: linaro-mm-sig@lists.linaro.org Signed-off-by: Lee Jones <lee.jones@linaro.org> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
2021-04-07HID: ishtp-hid-client: Fix incorrect function name report_bad_packet()Lee Jones1-1/+1
Fixes the following W=1 kernel build warning(s): drivers/hid/intel-ish-hid/ishtp-hid-client.c:36: warning: expecting prototype for report_bad_packets(). Prototype was for report_bad_packet() instead Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: Jiri Kosina <jikos@kernel.org> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: Daniel Drubin <daniel.drubin@intel.com> Cc: linux-input@vger.kernel.org Signed-off-by: Lee Jones <lee.jones@linaro.org> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
2021-04-07HID: intel-ish-hid: ipc: Correct fw_reset_work_fn() function name in headerLee Jones1-1/+1
Fixes the following W=1 kernel build warning(s): drivers/hid/intel-ish-hid/ipc/ipc.c:553: warning: expecting prototype for ish_fw_reset_work_fn(). Prototype was for fw_reset_work_fn() instead Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: Jiri Kosina <jikos@kernel.org> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: Zhang Lixu <lixu.zhang@intel.com> Cc: "Krzysztof Wilczyński" <kw@linux.com> Cc: linux-input@vger.kernel.org Signed-off-by: Lee Jones <lee.jones@linaro.org> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
2021-04-07HID: intel-ish-hid: Fix potential copy/paste errorLee Jones1-1/+1
Fixes the following W=1 kernel build warning(s): In file included from drivers/hid/intel-ish-hid/ishtp-hid.c:11: drivers/hid/intel-ish-hid/ishtp-hid.c:263: warning: expecting prototype for ishtp_hid_probe(). Prototype was for ishtp_hid_remove() instead Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: Jiri Kosina <jikos@kernel.org> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: linux-input@vger.kernel.org Signed-off-by: Lee Jones <lee.jones@linaro.org> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
2021-04-07HID: intel-ish-hid: Fix a little doc-rotLee Jones1-1/+1
Fixes the following W=1 kernel build warning(s): drivers/hid/intel-ish-hid/ishtp/client.c:121: warning: Function parameter or member 'cl_device' not described in 'ishtp_cl_allocate' drivers/hid/intel-ish-hid/ishtp/client.c:121: warning: Excess function parameter 'dev' description in 'ishtp_cl_allocate' Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: Jiri Kosina <jikos@kernel.org> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: Lee Jones <lee.jones@linaro.org> Cc: linux-input@vger.kernel.org Signed-off-by: Lee Jones <lee.jones@linaro.org> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
2021-04-07HID: intel-ish: Fix a naming disparity and a formatting errorLee Jones1-2/+2
Fixes the following W=1 kernel build warning(s): drivers/hid/intel-ish-hid/ishtp/hbm.c:409: warning: expecting prototype for ishtp_client_disconnect_request(). Prototype was for ishtp_hbm_fw_disconnect_req() instead drivers/hid/intel-ish-hid/ishtp/hbm.c:433: warning: wrong kernel-doc identifier on line: Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: Jiri Kosina <jikos@kernel.org> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: linux-input@vger.kernel.org Signed-off-by: Lee Jones <lee.jones@linaro.org> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
2021-04-07HID: intel-ish: Supply some missing param descriptionsLee Jones1-0/+5
Fixes the following W=1 kernel build warning(s): drivers/hid/intel-ish-hid/ishtp/bus.c:173: warning: Function parameter or member 'fw_client' not described in 'ishtp_get_fw_client_id' drivers/hid/intel-ish-hid/ishtp/bus.c:845: warning: Function parameter or member 'device' not described in 'ishtp_device' drivers/hid/intel-ish-hid/ishtp/bus.c:858: warning: Function parameter or member 'device' not described in 'ishtp_get_pci_device' drivers/hid/intel-ish-hid/ishtp/bus.c:871: warning: Function parameter or member 'cl_device' not described in 'ishtp_trace_callback' drivers/hid/intel-ish-hid/ishtp/bus.c:884: warning: Function parameter or member 'dev' not described in 'ish_hw_reset' Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: Jiri Kosina <jikos@kernel.org> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: "Uwe Kleine-König" <uwe@kleine-koenig.org> Cc: linux-input@vger.kernel.org Signed-off-by: Lee Jones <lee.jones@linaro.org> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
2021-04-07HID: intel-ish-hid: pci-ish: Remove unused variable 'ret'Lee Jones1-2/+1
Fixes the following W=1 kernel build warning(s): drivers/hid/intel-ish-hid/ipc/pci-ish.c: In function ‘ish_resume_handler’: drivers/hid/intel-ish-hid/ipc/pci-ish.c:264:6: warning: variable ‘ret’ set but not used [-Wunused-but-set-variable] Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: Jiri Kosina <jikos@kernel.org> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: Zhang Lixu <lixu.zhang@intel.com> Cc: Kai-Heng Feng <kai.heng.feng@canonical.com> Cc: Daniel Drubin <daniel.drubin@intel.com> Cc: linux-input@vger.kernel.org Signed-off-by: Lee Jones <lee.jones@linaro.org> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
2021-04-07HID: ishtp-hid-client: Move variable to where it's actually usedLee Jones2-5/+5
Fixes the following W=1 kernel build warning(s): In file included from drivers/hid/intel-ish-hid/ishtp-hid.c:11: drivers/hid/intel-ish-hid/ishtp-hid.h:24:21: warning: ‘hid_ishtp_guid’ defined but not used [-Wunused-const-variable=] Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: Jiri Kosina <jikos@kernel.org> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: Daniel Drubin <daniel.drubin@intel.com> Cc: linux-input@vger.kernel.org Signed-off-by: Lee Jones <lee.jones@linaro.org> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
2021-04-07HID: intel-ish-hid: Remove unused variable 'err'Lee Jones1-2/+1
Fixes the following W=1 kernel build warning(s): drivers/hid/intel-ish-hid/ishtp/client.c: In function ‘ishtp_cl_disconnect’: drivers/hid/intel-ish-hid/ishtp/client.c:266:6: warning: variable ‘err’ set but not used [-Wunused-but-set-variable] Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: Jiri Kosina <jikos@kernel.org> Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com> Cc: linux-input@vger.kernel.org Signed-off-by: Lee Jones <lee.jones@linaro.org> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
2021-03-19HID: intel_ish-hid: HBM: Use connected standby state bit during suspend/resumeYe Xiang2-3/+4
The individual sensor drivers implemented in the ISH firmware needs capability to take special actions when there is a change in the system standby state. The ISH core firmware passes this notification to individual sensor drivers in response to the OS request via connected standby bit in the SYSTEM_STATE_STATUS command. This change sets CONNECTED_STANDBY_STATE_BIT bit to 1 during suspend callback and clears during resume callback. Signed-off-by: Ye Xiang <xiang.ye@intel.com> [srinivas.pandruvada@linux.intel.com: changelog rewrite] Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2021-03-08HID: intel-ish-hid: Make remove callback return voidUwe Kleine-König3-9/+4
The driver core ignores the return value of struct bus_type::remove() because there is only little that can be done. To simplify the quest to make this function return void, let struct ishtp_cl_driver::remove() return void, too. All users already unconditionally return 0, this commit makes it obvious that returning an error value is a bad idea. Signed-off-by: Uwe Kleine-König <uwe@kleine-koenig.org> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2021-03-08HID: intel-ish-hid: Simplify logic in ishtp_cl_device_remove()Uwe Kleine-König1-6/+4
There is only a single change in behavior: Now dev->driver isn't modified. Assigning to this variable is in the domain of the driver core only. (And it's done in __device_release_driver shortly after bus->remove() (i.e ishtp_cl_device_remove() here) returns.) Signed-off-by: Uwe Kleine-König <uwe@kleine-koenig.org> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2021-03-08HID: intel-ish-hid: Drop if block with an always false conditionUwe Kleine-König1-5/+1
A remove callback is only ever called for a bound device. So there is no need to check for device or driver being NULL. Signed-off-by: Uwe Kleine-König <uwe@kleine-koenig.org> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2021-02-23Merge branch 'for-5.12/intel-ish' into for-linusJiri Kosina3-1/+81
- power management improvements for intel-ish driver from Zhang Lixu
2021-02-09HID: intel-ish-hid: ipc: Add Tiger Lake H PCI device IDYou-Sheng Yang2-0/+2
Added Tiger Lake H PCI device ID to the supported device list. Signed-off-by: You-Sheng Yang <vicamo.yang@canonical.com> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2021-01-06HID: intel-ish-hid: ipc: Address EHL Sx resume issuesZhang Lixu3-1/+33
When OOB is disabled, FW will be power gated when system is in S3/S4/S5 which is the same behavior with legacy ISH FW. When OOB is enabled, FW will always power on which is totally different comparing to legacy ISH FW. So NO_D3 flag is not enough to check FW's status after resume. Here we can use IPC FW status register to check host link status. If it is false, it means FW get reset after power gated, need go through the whole initialization flow; If it is true, it means FW is alive, just set host ready bit to let fw know host is up. Co-developed-by: Wei Jiang <wei.w.jiang@intel.com> Signed-off-by: Wei Jiang <wei.w.jiang@intel.com> Signed-off-by: Even Xu <even.xu@intel.com> Signed-off-by: Zhang Lixu <lixu.zhang@intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2021-01-06HID: intel-ish-hid: ipc: finish power flow for EHL OOBZhang Lixu1-0/+48
The EHL (Elkhart Lake) based platforms provide a OOB (Out of band) service, which allows wakup device when the system is in S5 (Soft-Off state). This OOB service can be enabled/disabled from BIOS settings. When enabled, the ISH device gets PME wake capability. To enable PME wakeup, driver also needs to enable ACPI GPE bit. Once wakeup, BIOS will clear the wakeup bit to identify wakeup is successful. So driver need to re-enable it in resume function to keep the next wakeup capability. Since this feature is only present on EHL, we use EHL PCI device id to enable this feature. Co-developed-by: Najumon Ba <najumon.ba@intel.com> Signed-off-by: Najumon Ba <najumon.ba@intel.com> Signed-off-by: Even Xu <even.xu@intel.com> Signed-off-by: Zhang Lixu <lixu.zhang@intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2020-11-25HID: intel-ish-hid: Remove unnecessary assignment to variable rvJing Xiangfeng1-4/+2
This assignment to rv is unused in an error path. So remove it. Signed-off-by: Jing Xiangfeng <jingxiangfeng@huawei.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2020-10-22Merge tag 'pci-v5.10-changes' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI updates from Bjorn Helgaas: "Enumeration: - Print IRQ number used by PCIe Link Bandwidth Notification (Dongdong Liu) - Add schedule point in pci_read_config() to reduce max latency (Jiang Biao) - Add Kconfig options for MPS/MRRS strategy (Jim Quinlan) Resource management: - Fix pci_iounmap() memory leak when !CONFIG_GENERIC_IOMAP (Lorenzo Pieralisi) PCIe native device hotplug: - Reduce noisiness on hot removal (Lukas Wunner) Power management: - Revert "PCI/PM: Apply D2 delay as milliseconds, not microseconds" that was done on the basis of spec typo (Bjorn Helgaas) - Rename pci_dev.d3_delay to d3hot_delay to remove D3hot/D3cold ambiguity (Krzysztof Wilczyński) - Remove unused pcibios_pm_ops (Vaibhav Gupta) IOMMU: - Enable Translation Blocking for external devices to harden against DMA attacks (Rajat Jain) Error handling: - Add an ACPI APEI notifier chain for vendor CPER records to enable device-specific error handling (Shiju Jose) ASPM: - Remove struct aspm_register_info to simplify code (Saheed O. Bolarinwa) Amlogic Meson PCIe controller driver: - Build as module by default (Kevin Hilman) Ampere Altra PCIe controller driver: - Add MCFG quirk to work around non-standard ECAM implementation (Tuan Phan) Broadcom iProc PCIe controller driver: - Set affinity mask on MSI interrupts (Mark Tomlinson) Broadcom STB PCIe controller driver: - Make PCIE_BRCMSTB depend on ARCH_BRCMSTB (Jim Quinlan) - Add DT bindings for more Brcmstb chips (Jim Quinlan) - Add bcm7278 register info (Jim Quinlan) - Add bcm7278 PERST# support (Jim Quinlan) - Add suspend and resume pm_ops (Jim Quinlan) - Add control of rescal reset (Jim Quinlan) - Set additional internal memory DMA viewport sizes (Jim Quinlan) - Accommodate MSI for older chips (Jim Quinlan) - Set bus max burst size by chip type (Jim Quinlan) - Add support for bcm7211, bcm7216, bcm7445, bcm7278 (Jim Quinlan) Freescale i.MX6 PCIe controller driver: - Use dev_err_probe() to reduce redundant messages (Anson Huang) Freescale Layerscape PCIe controller driver: - Enforce 4K DMA buffer alignment in endpoint test (Hou Zhiqiang) - Add DT compatible strings for ls1088a, ls2088a (Xiaowei Bao) - Add endpoint support for ls1088a, ls2088a (Xiaowei Bao) - Add endpoint test support for lS1088a (Xiaowei Bao) - Add MSI-X support for ls1088a (Xiaowei Bao) HiSilicon HIP PCIe controller driver: - Handle HIP-specific errors via ACPI APEI (Yicong Yang) HiSilicon Kirin PCIe controller driver: - Return -EPROBE_DEFER if the GPIO isn't ready (Bean Huo) Intel VMD host bridge driver: - Factor out physical offset, bus offset, IRQ domain, IRQ allocation (Jon Derrick) - Use generic PCI PM correctly (Jon Derrick) Marvell Aardvark PCIe controller driver: - Fix compilation on s390 (Pali Rohár) - Implement driver 'remove' function and allow to build it as module (Pali Rohár) - Move PCIe reset card code to advk_pcie_train_link() (Pali Rohár) - Convert mvebu a3700 internal SMCC firmware return codes to errno (Pali Rohár) - Fix initialization with old Marvell's Arm Trusted Firmware (Pali Rohár) Microsoft Hyper-V host bridge driver: - Fix hibernation in case interrupts are not re-created (Dexuan Cui) NVIDIA Tegra PCIe controller driver: - Stop checking return value of debugfs_create() functions (Greg Kroah-Hartman) - Convert to use DEFINE_SEQ_ATTRIBUTE macro (Liu Shixin) Qualcomm PCIe controller driver: - Reset PCIe to work around Qsdk U-Boot issue (Ansuel Smith) Renesas R-Car PCIe controller driver: - Add DT documentation for r8a774a1, r8a774b1, r8a774e1 endpoints (Lad Prabhakar) - Add RZ/G2M, RZ/G2N, RZ/G2H IDs to endpoint test (Lad Prabhakar) - Add DT support for r8a7742 (Lad Prabhakar) Socionext UniPhier Pro5 controller driver: - Add DT descriptions of iATU register (host and endpoint) (Kunihiko Hayashi) Synopsys DesignWare PCIe controller driver: - Add link up check in dw_child_pcie_ops.map_bus() (racy, but seems unavoidable) (Hou Zhiqiang) - Fix endpoint Header Type check so multi-function devices work (Hou Zhiqiang) - Skip PCIE_MSI_INTR0* programming if MSI is disabled (Jisheng Zhang) - Stop leaking MSI page in suspend/resume (Jisheng Zhang) - Add common iATU register support instead of keystone-specific code (Kunihiko Hayashi) - Major config space access and other cleanups in dwc core and drivers that use it (al, exynos, histb, imx6, intel-gw, keystone, kirin, meson, qcom, tegra) (Rob Herring) - Add multiple PFs support for endpoint (Xiaowei Bao) - Add MSI-X doorbell mode in endpoint mode (Xiaowei Bao) Miscellaneous: - Use fallthrough pseudo-keyword (Gustavo A. R. Silva) - Fix "0 used as NULL pointer" warnings (Gustavo Pimentel) - Fix "cast truncates bits from constant value" warnings (Gustavo Pimentel) - Remove redundant zeroing for sg_init_table() (Julia Lawall) - Use scnprintf(), not snprintf(), in sysfs "show" functions (Krzysztof Wilczyński) - Remove unused assignments (Krzysztof Wilczyński) - Fix "0 used as NULL pointer" warning (Krzysztof Wilczyński) - Simplify bool comparisons (Krzysztof Wilczyński) - Use for_each_child_of_node() and for_each_node_by_name() (Qinglang Miao) - Simplify return expressions (Qinglang Miao)" * tag 'pci-v5.10-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (147 commits) PCI: vmd: Update VMD PM to correctly use generic PCI PM PCI: vmd: Create IRQ allocation helper PCI: vmd: Create IRQ Domain configuration helper PCI: vmd: Create bus offset configuration helper PCI: vmd: Create physical offset helper PCI: v3-semi: Remove unneeded break PCI: dwc: Add link up check in dw_child_pcie_ops.map_bus() PCI/ASPM: Remove struct pcie_link_state.l1ss PCI/ASPM: Remove struct aspm_register_info.l1ss_cap PCI/ASPM: Pass L1SS Capabilities value, not struct aspm_register_info PCI/ASPM: Remove struct aspm_register_info.l1ss_ctl1 PCI/ASPM: Remove struct aspm_register_info.l1ss_ctl2 (unused) PCI/ASPM: Remove struct aspm_register_info.l1ss_cap_ptr PCI/ASPM: Remove struct aspm_register_info.latency_encoding PCI/ASPM: Remove struct aspm_register_info.enabled PCI/ASPM: Remove struct aspm_register_info.support PCI/ASPM: Use 'parent' and 'child' for readability PCI/ASPM: Move LTR path check to where it's used PCI/ASPM: Move pci_clear_and_set_dword() earlier PCI: dwc: Fix MSI page leakage in suspend/resume ...
2020-09-29PCI/PM: Rename pci_dev.d3_delay to d3hot_delayKrzysztof Wilczyński1-1/+1
PCI devices support two variants of the D3 power state: D3hot (main power present) D3cold (main power removed). Previously struct pci_dev contained: unsigned int d3_delay; /* D3->D0 transition time in ms */ unsigned int d3cold_delay; /* D3cold->D0 transition time in ms */ "d3_delay" refers specifically to the D3hot state. Rename it to "d3hot_delay" to avoid ambiguity and align with the ACPI "_DSM for Specifying Device Readiness Durations" in the PCI Firmware spec r3.2, sec 4.6.9. There is no change to the functionality. Link: https://lore.kernel.org/r/20200730210848.1578826-1-kw@linux.com Signed-off-by: Krzysztof Wilczyński <kw@linux.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2020-09-22HID: intel-ish-hid: simplify the return expression of ishtp_bus_remove_device()Qinglang Miao1-7/+1
Simplify the return expression. Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2020-07-07HID: intel-ish-hid: Replace PCI_DEV_FLAGS_NO_D3 with pci_save_stateKai-Heng Feng1-5/+11
PCI_DEV_FLAGS_NO_D3 should not be used outside of PCI core. Instead, we can use pci_save_state() to hint PCI core that the device should stay at D0 during suspend. By doing so, PCI core will let the upstream bridges also stays at D0 so the entire hierarchy is in the correct power state as PCI spec mandates. Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2020-05-05HID: intel-ish-hid: avoid bogus uninitialized-variable warningArnd Bergmann1-0/+2
Older compilers like gcc-4.8 don't see that the variable is initialized when it is used: In file included from include/linux/compiler_types.h:68:0, from <command-line>:0: drivers/hid/intel-ish-hid/ishtp-fw-loader.c: In function 'load_fw_from_host': include/linux/compiler-gcc.h:75:45: warning: 'fw_info.ldr_capability.max_dma_buf_size' may be used uninitialized in this function [-Wmaybe-uninitialized] #define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__) ^ drivers/hid/intel-ish-hid/ishtp-fw-loader.c:770:22: note: 'fw_info.ldr_capability.max_dma_buf_size' was declared here struct shim_fw_info fw_info; ^ Make sure to initialize it before returning an error from ish_query_loader_prop(). Fixes: 91b228107da3 ("HID: intel-ish-hid: ISH firmware loader client driver") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2020-03-21HID: intel-ish-hid: hbm.h: Replace zero-length array with flexible-array memberGustavo A. R. Silva1-1/+1
The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732932f ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2020-03-21HID: intel-ish-hid: ishtp-dev.h: Replace zero-length array with ↵Gustavo A. R. Silva1-1/+1
flexible-array member The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732932f ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2019-12-29HID: intel-ish-hid: ipc: Add Tiger Lake PCI device IDSrinivas Pandruvada2-0/+2
Added Tiger Lake PCI device ID to the supported device list. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2019-12-18HID: intel-ish-hid: ipc: add CMP device idEven Xu2-0/+2
Add Comet Lake H into ishtp support list. Signed-off-by: Even Xu <even.xu@intel.com> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
2019-11-02HID: intel-ish-hid: Spelling s/diconnect/disconnect/Geert Uytterhoeven1-1/+1
Fix misspelling of "disconnect". Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2019-10-16HID: intel-ish-hid: fix wrong error handling in ishtp_cl_alloc_tx_ring()Zhang Lixu1-1/+1
When allocating tx ring buffers failed, should free tx buffers, not rx buffers. Signed-off-by: Zhang Lixu <lixu.zhang@intel.com> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2019-09-22Merge branch 'for-5.4/ish' into for-linusJiri Kosina3-37/+61
- fixes for handling power management for intel-ish devices with NO_D3 flag set, from Zhang Lixu Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2019-08-19HID: intel-ish-hid: ipc: add EHL device idEven Xu2-0/+2
EHL is a new platform using ishtp solution, add its device id to support list. Signed-off-by: Even Xu <even.xu@intel.com> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>