From bd8d046c601c6f220be799c8d111e519a9e9a12d Mon Sep 17 00:00:00 2001 From: Raag Jadav Date: Mon, 8 Sep 2025 11:23:20 +0530 Subject: [PATCH] drm/xe/i2c: Enable bus mastering [ Upstream commit fce99326c9cf5a0e57c4283a61c6b622ef5b0de8 ] 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 Signed-off-by: Sasha Levin --- drivers/gpu/drm/xe/xe_i2c.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/xe/xe_i2c.c b/drivers/gpu/drm/xe/xe_i2c.c index bc7dc2099470..983e8e08e473 100644 --- a/drivers/gpu/drm/xe/xe_i2c.c +++ b/drivers/gpu/drm/xe/xe_i2c.c @@ -245,7 +245,7 @@ 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));