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path: root/drivers/bus/mhi/host/pci_generic.c
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2022-11-17bus: mhi: host: pci_generic: Add definition for some VIDsSlark Xiao1-7/+11
To make code neat and for convenience purpose, add definition for some VIDs. Adding it locally until these VIDs are used in multiple places. Signed-off-by: Slark Xiao <slark_xiao@163.com> Reviewed-by: Manivannan Sadhasivam <mani@kernel.org> Link: https://lore.kernel.org/r/20221107112700.773-1-slark_xiao@163.com Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2022-11-07bus: mhi: host: pci_generic: Add HP variant of T99W175Song Fuchang1-0/+3
The Foxconn T99W175 modem has an HP variant, which has the following output from lspci: 01:00.0 Wireless controller [0d40]: Device 03f0:0a6c It also has some HP-specific serial numbers on the metal case. It works well with this driver, so add support for this to the pci_generic driver. Signed-off-by: Song Fuchang <song.fc@gmail.com> Reviewed-by: Manivannan Sadhasivam <mani@kernel.org> [mani: manually applied the patch] Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2022-11-07bus: mhi: host: pci_generic: add support for sc8280xp-crd SDX55 variantJohan Hovold1-0/+2
The SC8280XP Compute Reference Design (CRD) has an on-PCB SDX55 modem which uses MBIM. The exact channel configuration is not known but the Foxconn SDX55 configuration allows the modem to be used so reuse that one for now. Signed-off-by: Johan Hovold <johan+linaro@kernel.org> Reviewed-by: Manivannan Sadhasivam <mani@kernel.org> Link: https://lore.kernel.org/r/20221104093913.23347-1-johan+linaro@kernel.org [mani: modified the subject to format "bus: mhi: host"] Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2022-10-28bus: mhi: host: pci_generic: Add a secondary AT port to Telit FN990Fabio Porcedda1-0/+2
Add a secondary AT port using one of OEM reserved channel. Signed-off-by: Fabio Porcedda <fabio.porcedda@gmail.com> Reviewed-by: Loic Poulain <loic.poulain@linaro.org> Reviewed-by: Manivannan Sadhasivam <mani@kernel.org> Link: https://lore.kernel.org/r/20220916144329.243368-3-fabio.porcedda@gmail.com Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2022-10-08Merge tag 'char-misc-6.1-rc1' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc and other driver updates from Greg KH: "Here is the large set of char/misc and other small driver subsystem changes for 6.1-rc1. Loads of different things in here: - IIO driver updates, additions, and changes. Probably the largest part of the diffstat - habanalabs driver update with support for new hardware and features, the second largest part of the diff. - fpga subsystem driver updates and additions - mhi subsystem updates - Coresight driver updates - gnss subsystem updates - extcon driver updates - icc subsystem updates - fsi subsystem updates - nvmem subsystem and driver updates - misc driver updates - speakup driver additions for new features - lots of tiny driver updates and cleanups All of these have been in the linux-next tree for a while with no reported issues" * tag 'char-misc-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (411 commits) w1: Split memcpy() of struct cn_msg flexible array spmi: pmic-arb: increase SPMI transaction timeout delay spmi: pmic-arb: block access for invalid PMIC arbiter v5 SPMI writes spmi: pmic-arb: correct duplicate APID to PPID mapping logic spmi: pmic-arb: add support to dispatch interrupt based on IRQ status spmi: pmic-arb: check apid against limits before calling irq handler spmi: pmic-arb: do not ack and clear peripheral interrupts in cleanup_irq spmi: pmic-arb: handle spurious interrupt spmi: pmic-arb: add a print in cleanup_irq drivers: spmi: Directly use ida_alloc()/free() MAINTAINERS: add TI ECAP driver info counter: ti-ecap-capture: capture driver support for ECAP Documentation: ABI: sysfs-bus-counter: add frequency & num_overflows items dt-bindings: counter: add ti,am62-ecap-capture.yaml counter: Introduce the COUNTER_COMP_ARRAY component type counter: Consolidate Counter extension sysfs attribute creation counter: Introduce the Count capture component counter: 104-quad-8: Add Signal polarity component counter: Introduce the Signal polarity component counter: interrupt-cnt: Implement watch_validate callback ...
2022-09-21bus: mhi: host: pci_generic: Add a secondary AT port to Telit FN990Fabio Porcedda1-0/+2
Add a secondary AT port using one of OEM reserved channel. Signed-off-by: Fabio Porcedda <fabio.porcedda@gmail.com> Reviewed-by: Loic Poulain <loic.poulain@linaro.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-09-16bus: mhi: host: always print detected modem nameKoen Vandeputte1-1/+1
This harmless print provides a very easy way of knowing if the modem is detected properly during probing. Promote it to an informational print so no hassle is required enabling kernel debugging info to obtain it. The rationale here is that: On a lot of low-storage embedded devices, extensive kernel debugging info is not always present as this would increase it's size to much causing partition size issues. Signed-off-by: Koen Vandeputte <koen.vandeputte@citymesh.com> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Reviewed-by: Loic Poulain <loic.poulain@linaro.org> Link: https://lore.kernel.org/r/20220831100349.1488762-1-koen.vandeputte@citymesh.com [mani: added missing review tags] Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2022-06-29bus: mhi: host: pci_generic: Add another Foxconn T99W175Bjorn Andersson1-0/+3
The Foxconn e0c3 device identifies itself as a T99W175 X55, add support for this to the pci_generic driver. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Reviewed-by: Manivannan Sadhasivam <mani@kernel.org> Link: https://lore.kernel.org/r/20220627170717.2252335-1-bjorn.andersson@linaro.org Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2022-06-22bus: mhi: host: pci_generic: Add Cinterion MV31-W with new baselineSlark Xiao1-0/+3
Cinterion MV31-W modem with a new baseline (firmware) is sold as a separate product with different device ID. So add support for the same reusing the config. Signed-off-by: Slark Xiao <slark_xiao@163.com> Reviewed-by: Manivannan Sadhasivam <mani@kernel.org> Link: https://lore.kernel.org/r/20220622032544.17713-1-slark_xiao@163.com Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2022-06-21bus: mhi: host: pci_generic: Add support for Quectel EM120 FCCL modemYonglin Tan1-0/+2
The product's enumeration align with previous Quectel EM120R-GL, so the EM120 FCCL would use the same config as Quectel EM120R-GL. Signed-off-by: Yonglin Tan <yonglin.tan@outlook.com> Reviewed-by: Manivannan Sadhasivam <mani@kernel.org> Reviewed-by: Loic Poulain <loic.poulain@linaro.org> Link: https://lore.kernel.org/r/MEYP282MB2374837FFCB18B12BFDEDE80FDCF9@MEYP282MB2374.AUSP282.PROD.OUTLOOK.COM [mani: added pci_generic prefix to subject and aligned the commit message] Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2022-05-19Merge tag 'mhi-for-v5.19' of ↵Greg Kroah-Hartman1-12/+121
git://git.kernel.org/pub/scm/linux/kernel/git/mani/mhi into char-work-next Manivannan writes: MHI changes for v5.19 MHI Host -------- Support for new modems: - Foxconn Cinterion MV32-WA/MV32-WB based on SDX62/SDX65 - Telit FN980 v1 based on SDX55 - Telit FN990 based on SDX65 - Foxconn T99W373/T99W368 based on SDX62/SDX65 Core changes: - During the recycle of event ring elements, compute the ctxt_wp based on the local cached value instead of reading from shared memory. This is to prevent the possible corruption of the ctxt_wp as some of the endpoint devices could modify the value in shared memory. - Add sysfs support for resetting the endpoint based on the MHI spec. The MHI spec allows the host to hard reset the device in the case of an unrecoverable error and all other reset mechanisms have failed. - During MHI shutdown, wait for the endpoint device to enter the ready state post reset before proceeding. This is to avoid a possible race where host would remove the interrupt handler and device will send ready state interrupt, resulting in IOMMU fault. - Bail out updating the MHI register if the read has failed during read/modify/write. - Use mhi_write_reg() instead of mhi_write_reg_field() for writing the whole register fields in mhi_init_mmio(). MAINTAINERS change: - Since Qualcomm has moved the email domain for its employess from codeaurora domain to quicinc, update the same for Hemant. * tag 'mhi-for-v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mani/mhi: (29 commits) bus: mhi: host: Add support for Foxconn T99W373 and T99W368 bus: mhi: host: pci_generic: add Telit FN990 bus: mhi: host: pci_generic: add Telit FN980 v1 hardware revision bus: mhi: host: Add support for Cinterion MV32-WA/MV32-WB bus: mhi: host: Optimize and update MMIO register write method bus: mhi: host: Bail on writing register fields if read fails bus: mhi: host: Wait for ready state after reset bus: mhi: host: Add soc_reset sysfs bus: mhi: host: pci_generic: Sort mhi_pci_id_table based on the PID bus: mhi: host: Use cached values for calculating the shared write pointer MAINTAINERS: Update Hemant's email id bus: mhi: ep: Add uevent support for module autoloading bus: mhi: ep: Add support for suspending and resuming channels bus: mhi: ep: Add support for queueing SKBs to the host bus: mhi: ep: Add support for processing channel rings bus: mhi: ep: Add support for reading from the host bus: mhi: ep: Add support for processing command rings bus: mhi: ep: Add support for handling SYS_ERR condition bus: mhi: ep: Add support for handling MHI_RESET bus: mhi: ep: Add support for powering down the MHI endpoint stack ...
2022-05-10bus: mhi: host: Add support for Foxconn T99W373 and T99W368Slark Xiao1-0/+15
Product's enumeration align with previous Foxconn SDX55, so T99W373(SDX62)/T99W368(SDX65) would use the same config as Foxconn SDX55. Remove fw and edl for this new commit. Signed-off-by: Slark Xiao <slark_xiao@163.com> Reviewed-by: Manivannan Sadhasivam <mani@kernel.org> Reviewed-by: Loic Poulain <loic.poulain@linaro.org> Link: https://lore.kernel.org/r/20220503024349.4486-1-slark_xiao@163.com Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2022-05-10bus: mhi: host: pci_generic: add Telit FN990Daniele Palmas1-0/+41
Add Telit FN990: 01:00.0 Unassigned class [ff00]: Qualcomm Device 0308 Subsystem: Device 1c5d:2010 Signed-off-by: Daniele Palmas <dnlplm@gmail.com> Reviewed-by: Manivannan Sadhasivam <mani@kernel.org> Link: https://lore.kernel.org/r/20220502112036.443618-1-dnlplm@gmail.com [mani: Added "host" to the subject] Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2022-05-10bus: mhi: host: pci_generic: add Telit FN980 v1 hardware revisionDaniele Palmas1-0/+38
Add Telit FN980 v1 hardware revision: 01:00.0 Unassigned class [ff00]: Qualcomm Device [17cb:0306] Subsystem: Device [1c5d:2000] Signed-off-by: Daniele Palmas <dnlplm@gmail.com> Reviewed-by: Manivannan Sadhasivam <mani@kernel.org> Link: https://lore.kernel.org/r/20220427072648.17635-1-dnlplm@gmail.com [mani: Added "host" to the subject] Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2022-04-23bus: mhi: host: Add support for Cinterion MV32-WA/MV32-WBSlark Xiao1-8/+22
MV32-WA is designed based on Qualcomm SDX62, and MV32-WB is designed based on QUalcomm SDX65. Both products' enumeration would align with previous product MV31-W.So we merge MV31 and MV32 to MV3X for some common settings. Signed-off-by: Slark Xiao <slark_xiao@163.com> Reviewed-by: Loic Poulain <loic.poulain@linaro.org> Reviewed-by: Manivannan Sadhasivam <mani@kernel.org> Link: https://lore.kernel.org/r/20220421092141.3984-1-slark_xiao@163.com [mani: removed the fixes tag that's not needed] Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2022-04-23bus: mhi: host: pci_generic: Sort mhi_pci_id_table based on the PIDManivannan Sadhasivam1-4/+5
Sorting this way helps in identifying the products of vendors. There is no sorting required for VID and the new VID should be added as the last entry. Let's also add a note clarifying this. Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Reviewed-by: Daniele Palmas <dnlplm@gmail.com> Link: https://lore.kernel.org/r/20220411133428.42165-1-manivannan.sadhasivam@linaro.org Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2022-04-13bus: mhi: host: pci_generic: Flush recovery worker during freezeManivannan Sadhasivam1-0/+1
It is possible that the recovery work might be running while the freeze gets executed (during hibernation etc.,). Currently, we don't powerdown the stack if it is not up but if the recovery work completes after freeze, then the device will be up afterwards. This will not be a sane situation. So let's flush the recovery worker before trying to powerdown the device. Cc: stable@vger.kernel.org Fixes: 5f0c2ee1fe8d ("bus: mhi: pci-generic: Fix hibernation") Reported-by: Bhaumik Vasav Bhatt <quic_bbhatt@quicinc.com> Reviewed-by: Bhaumik Vasav Bhatt <quic_bbhatt@quicinc.com> Link: https://lore.kernel.org/r/20220408150039.17297-1-manivannan.sadhasivam@linaro.org Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2022-04-13bus: mhi: host: pci_generic: Add missing poweroff() PM callbackManivannan Sadhasivam1-0/+1
During hibernation process, once thaw() stage completes, the MHI endpoint devices will be in M0 state post recovery. After that, the devices will be powered down so that the system can enter the target sleep state. During this stage, the PCI core will put the devices in D3hot. But this transition is allowed by the MHI spec. The devices can only enter D3hot when it is in M3 state. So for fixing this issue, let's add the poweroff() callback that will get executed before putting the system in target sleep state during hibernation. This callback will power down the device properly so that it could be restored during restore() or thaw() stage. Cc: stable@vger.kernel.org Fixes: 5f0c2ee1fe8d ("bus: mhi: pci-generic: Fix hibernation") Reported-by: Hemant Kumar <quic_hemantk@quicinc.com> Suggested-by: Hemant Kumar <quic_hemantk@quicinc.com> Link: https://lore.kernel.org/r/20220405125907.5644-1-manivannan.sadhasivam@linaro.org Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
2022-03-18bus: mhi: Move host MHI code to "host" directoryManivannan Sadhasivam1-0/+1105
In preparation of the endpoint MHI support, let's move the host MHI code to its own "host" directory and adjust the toplevel MHI Kconfig & Makefile. While at it, let's also move the "pci_generic" driver to "host" directory as it is a host MHI controller driver. Reviewed-by: Hemant Kumar <hemantk@codeaurora.org> Reviewed-by: Alex Elder <elder@linaro.org> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Link: https://lore.kernel.org/r/20220301160308.107452-5-manivannan.sadhasivam@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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