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Commit c0864cb3 authored by Jesse Barnes's avatar Jesse Barnes Committed by Keith Packard
Browse files

drm/i915/hdmi: HDMI source product description infoframe support 



Set an SPD infoframe if the sink supports it.

Signed-off-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: default avatarKeith Packard <keithp@keithp.com>
parent 45187ace

drivers/gpu/drm/i915/intel_drv.h

+21 −0
Original line number Diff line number Diff line
@@ -184,6 +184,22 @@ struct intel_crtc { 
#define DIP_VERSION_AVI 0x2

#define DIP_LEN_AVI     13



#define DIP_TYPE_SPD	0x3

#define DIP_VERSION_SPD	0x1

#define DIP_LEN_SPD	25

#define DIP_SPD_UNKNOWN	0

#define DIP_SPD_DSTB	0x1

#define DIP_SPD_DVDP	0x2

#define DIP_SPD_DVHS	0x3

#define DIP_SPD_HDDVR	0x4

#define DIP_SPD_DVC	0x5

#define DIP_SPD_DSC	0x6

#define DIP_SPD_VCD	0x7

#define DIP_SPD_GAME	0x8

#define DIP_SPD_PC	0x9

#define DIP_SPD_BD	0xa

#define DIP_SPD_SCD	0xb



struct dip_infoframe {

	uint8_t type;		/* HB0 */

	uint8_t ver;		/* HB1 */
@@ -208,6 +224,11 @@ struct dip_infoframe { 
			uint16_t left_bar_end;

			uint16_t right_bar_start;

		} avi;

		struct {

			uint8_t vn[8];

			uint8_t pd[16];

			uint8_t sdi;

		} spd;

		uint8_t payload[27];

	} __attribute__ ((packed)) body;

} __attribute__((packed));

drivers/gpu/drm/i915/intel_hdmi.c

+16 −0
Original line number Diff line number Diff line
@@ -201,6 +201,21 @@ static void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder) 
	intel_set_infoframe(encoder, &avi_if);

}



static void intel_hdmi_set_spd_infoframe(struct drm_encoder *encoder)

{

	struct dip_infoframe spd_if;



	memset(&spd_if, 0, sizeof(spd_if));

	spd_if.type = DIP_TYPE_SPD;

	spd_if.ver = DIP_VERSION_SPD;

	spd_if.len = DIP_LEN_SPD;

	strcpy(spd_if.body.spd.vn, "Intel");

	strcpy(spd_if.body.spd.pd, "Integrated gfx");

	spd_if.body.spd.sdi = DIP_SPD_PC;



	intel_set_infoframe(encoder, &spd_if);

}



static void intel_hdmi_mode_set(struct drm_encoder *encoder,

				struct drm_display_mode *mode,

				struct drm_display_mode *adjusted_mode)
@@ -245,6 +260,7 @@ static void intel_hdmi_mode_set(struct drm_encoder *encoder, 
	POSTING_READ(intel_hdmi->sdvox_reg);



	intel_hdmi_set_avi_infoframe(encoder);

	intel_hdmi_set_spd_infoframe(encoder);

}



static void intel_hdmi_dpms(struct drm_encoder *encoder, int mode)