linux-dev/drivers/bus/mhi, branch linus/master

Merge tag 'mhi-for-v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/mani/mhi into char-work-next

2022-05-19T14:55:13Z

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 ...

bus: mhi: host: Add support for Foxconn T99W373 and T99W368

2022-05-10T05:40:56Z

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 Reviewed-by: Manivannan Sadhasivam Reviewed-by: Loic Poulain Link: https://lore.kernel.org/r/20220503024349.4486-1-slark_xiao@163.com Signed-off-by: Manivannan Sadhasivam

bus: mhi: host: pci_generic: add Telit FN990

2022-05-10T05:40:44Z

Add Telit FN990: 01:00.0 Unassigned class [ff00]: Qualcomm Device 0308 Subsystem: Device 1c5d:2010 Signed-off-by: Daniele Palmas Reviewed-by: Manivannan Sadhasivam Link: https://lore.kernel.org/r/20220502112036.443618-1-dnlplm@gmail.com [mani: Added "host" to the subject] Signed-off-by: Manivannan Sadhasivam

bus: mhi: host: pci_generic: add Telit FN980 v1 hardware revision

2022-05-10T05:40:14Z

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 Reviewed-by: Manivannan Sadhasivam Link: https://lore.kernel.org/r/20220427072648.17635-1-dnlplm@gmail.com [mani: Added "host" to the subject] Signed-off-by: Manivannan Sadhasivam

bus: mhi: replace snprintf with sysfs_emit

2022-05-09T13:41:01Z

Fix following coccicheck warning: ./drivers/bus/mhi/host/init.c:89:8-16: WARNING: use scnprintf or sprintf Use sysfs_emit and sysfs_emit_at instead of snprintf. Reviewed-by: Kees Cook Reviewed-by: Manivannan Sadhasivam Signed-off-by: Wan Jiabing Link: https://lore.kernel.org/r/20220426125902.681258-1-wanjiabing@vivo.com Signed-off-by: Greg Kroah-Hartman

Merge 5.18-rc5 into char-misc-next

2022-05-02T11:49:24Z

We need the char-misc fixes in here as well. Signed-off-by: Greg Kroah-Hartman

bus: mhi: ep: Add uevent support for module autoloading

2022-04-26T11:17:42Z

Add uevent support to MHI endpoint bus so that the client drivers can be autoloaded by udev when the MHI endpoint devices gets created. The client drivers are expected to provide MODULE_DEVICE_TABLE with the MHI id_table struct so that the alias can be exported. The MHI endpoint reused the mhi_device_id structure of the MHI bus. Reviewed-by: Alex Elder Signed-off-by: Manivannan Sadhasivam Link: https://lore.kernel.org/r/20220405135754.6622-19-manivannan.sadhasivam@linaro.org Signed-off-by: Greg Kroah-Hartman

bus: mhi: ep: Add support for suspending and resuming channels

2022-04-26T11:17:42Z

Add support for suspending and resuming the channels in MHI endpoint stack. The channels will be moved to the suspended state during M3 state transition and will be resumed during M0 transition. Reviewed-by: Alex Elder Signed-off-by: Manivannan Sadhasivam Link: https://lore.kernel.org/r/20220405135754.6622-18-manivannan.sadhasivam@linaro.org Signed-off-by: Greg Kroah-Hartman

bus: mhi: ep: Add support for queueing SKBs to the host

2022-04-26T11:17:42Z

Add support for queueing SKBs to the host over the transfer ring of the relevant channel. The mhi_ep_queue_skb() API will be used by the client networking drivers to queue the SKBs to the host over MHI bus. The host will add ring elements to the transfer ring periodically for the device and the device will write SKBs to the ring elements. If a single SKB doesn't fit in a ring element (TRE), it will be placed in multiple ring elements and the overflow event will be sent for all ring elements except the last one. For the last ring element, the EOT event will be sent indicating the packet boundary. Reviewed-by: Alex Elder Signed-off-by: Manivannan Sadhasivam Link: https://lore.kernel.org/r/20220405135754.6622-17-manivannan.sadhasivam@linaro.org Signed-off-by: Greg Kroah-Hartman

bus: mhi: ep: Add support for processing channel rings

2022-04-26T11:17:41Z

Add support for processing the channel rings from host. For the channel ring associated with DL channel, the xfer callback will simply invoked. For the case of UL channel, the ring elements will be read in a buffer till the write pointer and later passed to the client driver using the xfer callback. The client drivers should provide the callbacks for both UL and DL channels during registration. Reviewed-by: Alex Elder Signed-off-by: Manivannan Sadhasivam Link: https://lore.kernel.org/r/20220405135754.6622-16-manivannan.sadhasivam@linaro.org Signed-off-by: Greg Kroah-Hartman