From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rodrigo Vivi Subject: [PATCH 3/9] drm/i915: Added SDP and VSC structures for handling PSR for eDP Date: Wed, 30 Jan 2013 16:24:45 -0200 Message-ID: <1359570291-2170-4-git-send-email-rodrigo.vivi@gmail.com> References: <1359570291-2170-1-git-send-email-rodrigo.vivi@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1359570291-2170-1-git-send-email-rodrigo.vivi@gmail.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org Errors-To: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org To: intel-gfx@lists.freedesktop.org Cc: Shobhit Kumar , dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org From: Shobhit Kumar Signed-off-by: Sateesh Kavuri 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 v3: removing unecessary identation at DP_RECEIVER_CAP_SIZE v4: moving them to include/drm/drm_dp_helper.h and also already icluding EDP_PSR_RECEIVER_CAP_SIZE to add everything needed for PSR at once at drm_dp_helper.h Signed-off-by: Rodrigo Vivi --- include/drm/drm_dp_helper.h | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index e8e1417..e9b7c4b 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -343,12 +343,41 @@ u8 drm_dp_get_adjust_request_pre_emphasis(u8 link_status[DP_LINK_STATUS_SIZE], int lane); #define DP_RECEIVER_CAP_SIZE 0xf +#define EDP_PSR_RECEIVER_CAP_SIZE 2 + void drm_dp_link_train_clock_recovery_delay(u8 dpcd[DP_RECEIVER_CAP_SIZE]); void drm_dp_link_train_channel_eq_delay(u8 dpcd[DP_RECEIVER_CAP_SIZE]); u8 drm_dp_link_rate_to_bw_code(int link_rate); int drm_dp_bw_code_to_link_rate(u8 link_bw); +/* 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)); + static inline int drm_dp_max_link_rate(u8 dpcd[DP_RECEIVER_CAP_SIZE]) { -- 1.7.11.7