linux.git/drivers/gpu/drm/xe/xe_i2c.c, branch master

drm/xe/i2c: Allow per domain unique id

2026-07-23T07:19:03Z

PCI bus, device and function can be same for devices existing across different domains. Allow per domain unique identifier while registering platform device to prevent name conflict. Fixes: f0e53aadd702 ("drm/xe: Support for I2C attached MCUs") Signed-off-by: Raag Jadav Reviewed-by: Heikki Krogerus Link: https://patch.msgid.link/20260721113438.651100-1-raag.jadav@intel.com Signed-off-by: Matt Roper (cherry picked from commit a79f6abc8b516b5bd906e2eca8121e3549ee163f) Signed-off-by: Thomas Hellström

drm/xe/i2c: Assert/Deassert I2C IRQ

2026-03-16T14:36:41Z

I2C IRQ is triggered using virtual wire. Assert/Deassert it in IRQ handler to allow subsequent interrupt generation. Signed-off-by: Raag Jadav Reviewed-by: Heikki Krogerus Link: https://patch.msgid.link/20260313080438.4166251-1-raag.jadav@intel.com Signed-off-by: Matt Roper

drm/xe: Move xe_root_tile_mmio() to xe_device.h

2026-02-05T20:08:28Z

It seems to be a better place for this helper function, where we already have other 'root' oriented helpers. Signed-off-by: Michal Wajdeczko Reviewed-by: Stuart Summers Reviewed-by: Matt Roper Link: https://patch.msgid.link/20260203211240.745-2-michal.wajdeczko@intel.com

drm/xe: Cleanup unused header includes

2026-01-15T15:05:04Z

clangd reports many "unused header" warnings throughout the Xe driver. Start working to clean this up by removing unnecessary includes in our .c files and/or replacing them with explicit includes of other headers that were previously being included indirectly. By far the most common offender here was unnecessary inclusion of xe_gt.h. That likely originates from the early days of xe.ko when xe_mmio did not exist and all register accesses, including those unrelated to GTs, were done with GT functions. There's still a lot of additional #include cleanup that can be done in the headers themselves; that will come as a followup series. v2: - Squash the 79-patch series down to a single patch. (MattB) Reviewed-by: Matthew Brost Link: https://patch.msgid.link/20260115032803.4067824-2-matthew.d.roper@intel.com Signed-off-by: Matt Roper

drm/xe/i2c: Force polling mode in survivability

2026-01-05T15:43:22Z

SGUnit interrupts are not initialized in survivability. Force I2C controller to polling mode while in survivability. v2: Use helper function instead of manual check (Riana) Signed-off-by: Raag Jadav Reviewed-by: Heikki Krogerus Link: https://patch.msgid.link/20260105080750.16605-1-raag.jadav@intel.com Signed-off-by: Matt Roper

drm/xe/cri: Enable I2C controller

2025-12-12T16:49:22Z

Enable I2C controller for Crescent Island and while at it, rely on has_i2c flag instead of manual platform checks. Signed-off-by: Raag Jadav Reviewed-by: Heikki Krogerus Reviewed-by: Rodrigo Vivi Link: https://patch.msgid.link/20251128084414.306265-1-raag.jadav@intel.com Signed-off-by: Matt Roper

drm/xe/i2c: Wire up reset/postinstall for I2C IRQ

2025-10-13T14:24:25Z

I2C IRQ needs to be routed to SGUnit or PUnit for the devices that support it. Wire up reset/postinstall handles for I2C IRQ to take care of this. Signed-off-by: Raag Jadav Reviewed-by: Andi Shyti Reviewed-by: Heikki Krogerus Link: https://lore.kernel.org/r/20251011123509.3233213-3-raag.jadav@intel.com Signed-off-by: Lucas De Marchi

drm/xe/i2c: Introduce xe_i2c_irq_present()

2025-10-13T14:24:25Z

In preparation of wider usecases which require checking for I2C IRQ presence, introduce xe_i2c_irq_present() helper. Signed-off-by: Raag Jadav Reviewed-by: Andi Shyti Reviewed-by: Heikki Krogerus Link: https://lore.kernel.org/r/20251011123509.3233213-2-raag.jadav@intel.com Signed-off-by: Lucas De Marchi

drm/xe/i2c: Enable bus mastering

2025-09-09T13:02:35Z

Enable bus mastering for I2C controller to support device initiated in-band transactions. Signed-off-by: Raag Jadav Reviewed-by: Heikki Krogerus Link: https://lore.kernel.org/r/20250908055320.2549722-1-raag.jadav@intel.com Signed-off-by: Lucas De Marchi

drm/xe/i2c: Introduce xe_i2c_present()

2025-08-17T16:27:50Z

In preparation of wider usecases which require checking for I2C controller presence, introduce xe_i2c_present() helper. v2: Doc fix (Riana) Suggested-by: Riana Tauro Signed-off-by: Raag Jadav Reviewed-by: Heikki Krogerus Reviewed-by: Riana Tauro Link: https://lore.kernel.org/r/20250814091845.1356135-1-raag.jadav@intel.com Signed-off-by: Rodrigo Vivi