Commit fce99326 authored by Raag Jadav's avatar Raag Jadav Committed by Lucas De Marchi
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drm/xe/i2c: Enable bus mastering 



Enable bus mastering for I2C controller to support device initiated
in-band transactions.

Signed-off-by: default avatarRaag Jadav <raag.jadav@intel.com>
Reviewed-by: default avatarHeikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20250908055320.2549722-1-raag.jadav@intel.com


Signed-off-by: default avatarLucas De Marchi <lucas.demarchi@intel.com>
parent fd548b77

drivers/gpu/drm/xe/xe_i2c.c

+1 −1
Original line number Diff line number Diff line
@@ -259,7 +259,7 @@ void xe_i2c_pm_resume(struct xe_device *xe, bool d3cold) 
		return;



	if (d3cold)

		xe_mmio_rmw32(mmio, I2C_CONFIG_CMD, 0, PCI_COMMAND_MEMORY);

		xe_mmio_rmw32(mmio, I2C_CONFIG_CMD, 0, PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);



	xe_mmio_rmw32(mmio, I2C_CONFIG_PMCSR, PCI_PM_CTRL_STATE_MASK, (__force u32)PCI_D0);

	drm_dbg(&xe->drm, "pmcsr: 0x%08x\n", xe_mmio_read32(mmio, I2C_CONFIG_PMCSR));