[Intel-gfx] [PATCH 2/8] drm/i915: Added SDP and VSC structures for handling PSR for eDP

[Rodrigo Vivi]

From: Shobhit Kumar <shobhit.kumar at intel.com>

Signed-off-by: Sateesh Kavuri <sateesh.kavuri at intel.com>

v2: Modified and corrected the structures to be more in line for
kernel coding guidelines and rebased the code on Paulo's DP patchset

Signed-off-by: Shobhit Kumar <shobhit.kumar at intel.com>

v3: removing unecessary identation at DP_RECEIVER_CAP_SIZE

Signed-off-by: Rodrigo Vivi <rodrigo.vivi at gmail.com>
---
 drivers/gpu/drm/i915/intel_drv.h | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 116580b..9799fe9 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -371,10 +371,38 @@ struct intel_dp {
 	int backlight_on_delay;
 	int backlight_off_delay;
 	struct delayed_work panel_vdd_work;
+	uint8_t psr_setup;
 	bool want_panel_vdd;
 	struct intel_connector *attached_connector;
 };
 
+/* SDP header as per eDP 1.3 spec, section 3.6 */
+struct edp_sdp_header {
+	u8 id;
+	u8 type;
+	u8 revision : 5;   	    /* Bits 0:4 */
+	u8 rsvd1    : 3;   	    /* Bits 5:7 */
+	u8 valid_payload_bytes : 5; /* Bits 0:4 */
+	u8 rsvd2	       : 3; /* Bits 5:7 */
+} __attribute__((packed));
+
+/* SDP VSC header as per eDP 1.3 spec, section 3.6 */
+struct edp_vsc_psr {
+	struct edp_sdp_header sdp_header;
+	u8 unused;
+	u8 psr_state  : 1; 	/* Bit 0 */
+	u8 update_rfb : 1;	/* Bit 1 */
+	u8 valid_crc  : 1;	/* Bit 2 */
+	u8 reserved1  : 5;	/* Bits 3:7 */
+	u8 crc_r_lower;
+	u8 crc_r_higher;
+	u8 crc_g_lower;
+	u8 crc_g_higher;
+	u8 crc_b_lower;
+	u8 crc_b_higher;
+	u8 reserved2[24];
+} __attribute__((packed));
+
 struct intel_digital_port {
 	struct intel_encoder base;
 	enum port port;
-- 
1.7.11.7