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

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Set an SPD infoframe if the sink supports it.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
This commit is contained in:
Jesse Barnes 2011-08-03 09:22:56 -07:00 committed by Keith Packard
parent 45187ace97
commit c0864cb39c
2 changed files with 37 additions and 0 deletions
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21
drivers/gpu/drm/i915/intel_drv.h
View file

@ -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));

16
drivers/gpu/drm/i915/intel_hdmi.c
View file

@ -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)