AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

drm: Added SDP and VSC structures for handling PSR for eDP

Browse Source 
SDP header and SDP VSC header as per eDP 1.3 spec, section 3.5,
chapter "PSR Secondary Data Package Support".

v2: Modified and corrected the structures to be more in line for
kernel coding guidelines and rebased the code on Paulo's DP patchset
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
v5: Fix SDP VSC header and identation by (Paulo Zanoni) and
    remove i915 from title (Daniel Vetter)
v6: Fix spec version and move comments from code to commit message
    since numbers might change in the future (by Paulo Zanoni).

CC: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Sateesh Kavuri <sateesh.kavuri@intel.com>
Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Acked-by: Dave Airlie <airlied@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Shobhit Kumar 2013-07-11 18:44:55 -03:00 committed by Daniel Vetter
parent 2f63315692
commit 52604b1ffa
1 changed files with 30 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
include/drm/drm_dp_helper.h
View File

@ -342,13 +342,42 @@ u8 drm_dp_get_adjust_request_voltage(u8 link_status[DP_LINK_STATUS_SIZE],
u8 drm_dp_get_adjust_request_pre_emphasis(u8 link_status[DP_LINK_STATUS_SIZE], u8 drm_dp_get_adjust_request_pre_emphasis(u8 link_status[DP_LINK_STATUS_SIZE],
int lane); int lane);
#define DP_RECEIVER_CAP_SIZE 0xf #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_clock_recovery_delay(u8 dpcd[DP_RECEIVER_CAP_SIZE]);
void drm_dp_link_train_channel_eq_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); u8 drm_dp_link_rate_to_bw_code(int link_rate);
int drm_dp_bw_code_to_link_rate(u8 link_bw); int drm_dp_bw_code_to_link_rate(u8 link_bw);
struct edp_sdp_header {
u8 HB0; /* Secondary Data Packet ID */
u8 HB1; /* Secondary Data Packet Type */
u8 HB2; /* 7:5 reserved, 4:0 revision number */
u8 HB3; /* 7:5 reserved, 4:0 number of valid data bytes */
} __packed;
#define EDP_SDP_HEADER_REVISION_MASK 0x1F
#define EDP_SDP_HEADER_VALID_PAYLOAD_BYTES 0x1F
struct edp_vsc_psr {
struct edp_sdp_header sdp_header;
u8 DB0; /* Stereo Interface */
u8 DB1; /* 0 - PSR State; 1 - Update RFB; 2 - CRC Valid */
u8 DB2; /* CRC value bits 7:0 of the R or Cr component */
u8 DB3; /* CRC value bits 15:8 of the R or Cr component */
u8 DB4; /* CRC value bits 7:0 of the G or Y component */
u8 DB5; /* CRC value bits 15:8 of the G or Y component */
u8 DB6; /* CRC value bits 7:0 of the B or Cb component */
u8 DB7; /* CRC value bits 15:8 of the B or Cb component */
u8 DB8_31[24]; /* Reserved */
} __packed;
#define EDP_VSC_PSR_STATE_ACTIVE (1<<0)
#define EDP_VSC_PSR_UPDATE_RFB (1<<1)
#define EDP_VSC_PSR_CRC_VALUES_VALID (1<<2)
static inline int static inline int
drm_dp_max_link_rate(u8 dpcd[DP_RECEIVER_CAP_SIZE]) drm_dp_max_link_rate(u8 dpcd[DP_RECEIVER_CAP_SIZE])
{ {