From a58b20aa3f890a4fe3e2ad38649359997161dd91 Mon Sep 17 00:00:00 2001 From: Adrian Barnaś Date: Fri, 19 Sep 2025 07:44:08 +0000 Subject: bus: mhi: ep: Make mhi_ep_bus_type const MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Because driver core can properly handle constant struct bus_type, move the mhi_ep_bus_type to be a constant structure as well, placing it into read-only memory which can not be modified at runtime. Signed-off-by: Adrian Barnaś Signed-off-by: Manivannan Sadhasivam Reviewed-by: Greg Kroah-Hartman Link: https://patch.msgid.link/20250919074408.868220-1-abarnas@google.com --- drivers/bus/mhi/ep/internal.h | 2 +- drivers/bus/mhi/ep/main.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/bus/mhi/ep/internal.h b/drivers/bus/mhi/ep/internal.h index 577965f95fda..512da7482acc 100644 --- a/drivers/bus/mhi/ep/internal.h +++ b/drivers/bus/mhi/ep/internal.h @@ -11,7 +11,7 @@ #include "../common.h" -extern struct bus_type mhi_ep_bus_type; +extern const struct bus_type mhi_ep_bus_type; #define MHI_REG_OFFSET 0x100 #define BHI_REG_OFFSET 0x200 diff --git a/drivers/bus/mhi/ep/main.c b/drivers/bus/mhi/ep/main.c index cdea24e92919..86e003bc44e0 100644 --- a/drivers/bus/mhi/ep/main.c +++ b/drivers/bus/mhi/ep/main.c @@ -1703,7 +1703,7 @@ static int mhi_ep_match(struct device *dev, const struct device_driver *drv) return 0; }; -struct bus_type mhi_ep_bus_type = { +const struct bus_type mhi_ep_bus_type = { .name = "mhi_ep", .dev_name = "mhi_ep", .match = mhi_ep_match, -- cgit v1.2.3 From 6eaee77923ddf04beedb832c06f983679586361c Mon Sep 17 00:00:00 2001 From: Daniele Palmas Date: Wed, 15 Oct 2025 12:20:59 +0200 Subject: bus: mhi: host: pci_generic: Add Telit FE990B40 modem support Add SDX72 based modem Telit FE990B40, reusing FN920C04 configuration. 01:00.0 Unassigned class [ff00]: Qualcomm Device 0309 Subsystem: Device 1c5d:2025 Signed-off-by: Daniele Palmas Signed-off-by: Manivannan Sadhasivam Link: https://patch.msgid.link/20251015102059.1781001-1-dnlplm@gmail.com --- drivers/bus/mhi/host/pci_generic.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'drivers') diff --git a/drivers/bus/mhi/host/pci_generic.c b/drivers/bus/mhi/host/pci_generic.c index b188bbf7de04..3d8c9729fcfc 100644 --- a/drivers/bus/mhi/host/pci_generic.c +++ b/drivers/bus/mhi/host/pci_generic.c @@ -877,6 +877,16 @@ static const struct mhi_pci_dev_info mhi_telit_fn990b40_info = { .edl_trigger = true, }; +static const struct mhi_pci_dev_info mhi_telit_fe990b40_info = { + .name = "telit-fe990b40", + .config = &modem_telit_fn920c04_config, + .bar_num = MHI_PCI_DEFAULT_BAR_NUM, + .dma_data_width = 32, + .sideband_wake = false, + .mru_default = 32768, + .edl_trigger = true, +}; + static const struct mhi_pci_dev_info mhi_netprisma_lcur57_info = { .name = "netprisma-lcur57", .edl = "qcom/prog_firehose_sdx24.mbn", @@ -933,6 +943,9 @@ static const struct pci_device_id mhi_pci_id_table[] = { /* Telit FN990B40 (sdx72) */ { PCI_DEVICE_SUB(PCI_VENDOR_ID_QCOM, 0x0309, 0x1c5d, 0x201a), .driver_data = (kernel_ulong_t) &mhi_telit_fn990b40_info }, + /* Telit FE990B40 (sdx72) */ + { PCI_DEVICE_SUB(PCI_VENDOR_ID_QCOM, 0x0309, 0x1c5d, 0x2025), + .driver_data = (kernel_ulong_t) &mhi_telit_fe990b40_info }, { PCI_DEVICE(PCI_VENDOR_ID_QCOM, 0x0309), .driver_data = (kernel_ulong_t) &mhi_qcom_sdx75_info }, /* QDU100, x100-DU */ -- cgit v1.2.3 From 9e24bdfecdb071a3a42fb74be1ab503c958e2740 Mon Sep 17 00:00:00 2001 From: Marco Crivellari Date: Thu, 6 Nov 2025 17:24:30 +0100 Subject: bus: mhi: ep: add WQ_PERCPU to alloc_workqueue users MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Currently if a user enqueue a work item using schedule_delayed_work() the used wq is "system_wq" (per-cpu wq) while queue_delayed_work() use WORK_CPU_UNBOUND (used when a cpu is not specified). The same applies to schedule_work() that is using system_wq and queue_work(), that makes use again of WORK_CPU_UNBOUND. This lack of consistency cannot be addressed without refactoring the API. alloc_workqueue() treats all queues as per-CPU by default, while unbound workqueues must opt-in via WQ_UNBOUND. This default is suboptimal: most workloads benefit from unbound queues, allowing the scheduler to place worker threads where they’re needed and reducing noise when CPUs are isolated. This continues the effort to refactor workqueue APIs, which began with the introduction of new workqueues and a new alloc_workqueue flag in: commit 128ea9f6ccfb ("workqueue: Add system_percpu_wq and system_dfl_wq") commit 930c2ea566af ("workqueue: Add new WQ_PERCPU flag") This change adds a new WQ_PERCPU flag to explicitly request alloc_workqueue() to be per-cpu when WQ_UNBOUND has not been specified. With the introduction of the WQ_PERCPU flag (equivalent to !WQ_UNBOUND), any alloc_workqueue() caller that doesn’t explicitly specify WQ_UNBOUND must now use WQ_PERCPU. Once migration is complete, WQ_UNBOUND can be removed and unbound will become the implicit default. Suggested-by: Tejun Heo Signed-off-by: Marco Crivellari Signed-off-by: Manivannan Sadhasivam Link: https://patch.msgid.link/20251106162430.328701-1-marco.crivellari@suse.com --- drivers/bus/mhi/ep/main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/bus/mhi/ep/main.c b/drivers/bus/mhi/ep/main.c index 86e003bc44e0..3c208b5c8446 100644 --- a/drivers/bus/mhi/ep/main.c +++ b/drivers/bus/mhi/ep/main.c @@ -1494,7 +1494,7 @@ int mhi_ep_register_controller(struct mhi_ep_cntrl *mhi_cntrl, INIT_WORK(&mhi_cntrl->cmd_ring_work, mhi_ep_cmd_ring_worker); INIT_WORK(&mhi_cntrl->ch_ring_work, mhi_ep_ch_ring_worker); - mhi_cntrl->wq = alloc_workqueue("mhi_ep_wq", 0, 0); + mhi_cntrl->wq = alloc_workqueue("mhi_ep_wq", WQ_PERCPU, 0); if (!mhi_cntrl->wq) { ret = -ENOMEM; goto err_destroy_ring_item_cache; -- cgit v1.2.3 From ac35e04f8000aaaf98635792464647e7a6f3422e Mon Sep 17 00:00:00 2001 From: Slark Xiao Date: Wed, 19 Nov 2025 18:56:14 +0800 Subject: bus: mhi: host: pci_generic: Add Foxconn T99W760 modem T99W760 modem is based on Qualcomm SDX35 chipset. It uses the same channel configurations of Foxconn SDX61 modem. Hence, add support for it by reusing the 'modem_foxconn_sdx61_config' config structure. The EDL firmware for this modem has been pushed to linux-firmware. Signed-off-by: Slark Xiao [mani: reworded description] Signed-off-by: Manivannan Sadhasivam Link: https://patch.msgid.link/20251119105615.48295-2-slark_xiao@163.com --- drivers/bus/mhi/host/pci_generic.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'drivers') diff --git a/drivers/bus/mhi/host/pci_generic.c b/drivers/bus/mhi/host/pci_generic.c index 3d8c9729fcfc..e3bc737313a2 100644 --- a/drivers/bus/mhi/host/pci_generic.c +++ b/drivers/bus/mhi/host/pci_generic.c @@ -663,6 +663,17 @@ static const struct mhi_pci_dev_info mhi_foxconn_t99w696_info = { .sideband_wake = false, }; +static const struct mhi_pci_dev_info mhi_foxconn_t99w760_info = { + .name = "foxconn-t99w760", + .edl = "qcom/sdx35/foxconn/xbl_s_devprg_ns.melf", + .edl_trigger = true, + .config = &modem_foxconn_sdx61_config, + .bar_num = MHI_PCI_DEFAULT_BAR_NUM, + .dma_data_width = 32, + .mru_default = 32768, + .sideband_wake = false, +}; + static const struct mhi_channel_config mhi_mv3x_channels[] = { MHI_CHANNEL_CONFIG_UL(0, "LOOPBACK", 64, 0), MHI_CHANNEL_CONFIG_DL(1, "LOOPBACK", 64, 0), @@ -1010,6 +1021,8 @@ static const struct pci_device_id mhi_pci_id_table[] = { /* DW5934e(sdx72), Non-eSIM */ { PCI_DEVICE(PCI_VENDOR_ID_FOXCONN, 0xe11e), .driver_data = (kernel_ulong_t) &mhi_foxconn_dw5934e_info }, + { PCI_DEVICE(PCI_VENDOR_ID_FOXCONN, 0xe123), + .driver_data = (kernel_ulong_t) &mhi_foxconn_t99w760_info }, /* MV31-W (Cinterion) */ { PCI_DEVICE(PCI_VENDOR_ID_THALES, 0x00b3), .driver_data = (kernel_ulong_t) &mhi_mv31_info }, -- cgit v1.2.3