Commit c703e753 authored Apr 15, 2019 by Charlene Liu Committed by Alex Deucher Jun 22, 2019

drm/amd/display: add SW_USE_I2C_REG request.



[Description]
This is for DC_I2c arbitration use between HW use/SW use and DMCU use.

Signed-off-by: Charlene Liu <charlene.liu@amd.com>
Reviewed-by: Krunoslav Kovac <Krunoslav.Kovac@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

parent b01473e9

drivers/gpu/drm/amd/display/dc/dce/dce_i2c_hw.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -306,6 +306,8 @@ static bool setup_engine(
		#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
		uint32_t reset_length = 0;
		#endif
		/* we have checked I2c not used by DMCU, set SW use I2C REQ to 1 to indicate SW using it*/
		REG_UPDATE(DC_I2C_ARBITRATION, DC_I2C_SW_USE_I2C_REG_REQ, 1);

		/* we have checked I2c not used by DMCU, set SW use I2C REQ to 1 to indicate SW using it*/
		REG_UPDATE(DC_I2C_ARBITRATION, DC_I2C_SW_USE_I2C_REG_REQ, 1);

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