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authorJani Nikula <jani.nikula@intel.com>2013-09-27 19:01:01 +0300
committerDave Airlie <airlied@redhat.com>2013-10-01 15:28:57 +1000
commit0aec288130713cf7bcf97c929ac5fab6a8e00e44 (patch)
tree3fb1b235e3bb502a7dcd6cf9351d12725697c436 /include/drm/drm_dp_helper.h
parent4ddc773b60497dcefbd9824f8931ae297659e6cc (diff)
drm/dp: constify DP DPCD helpers
None of the DP DPCD helpers need to modify the DPCD. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'include/drm/drm_dp_helper.h')
-rw-r--r--include/drm/drm_dp_helper.h16
1 files changed, 8 insertions, 8 deletions
diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
index 83da4eb1575b..110f4f1f51d7 100644
--- a/include/drm/drm_dp_helper.h
+++ b/include/drm/drm_dp_helper.h
@@ -333,20 +333,20 @@ i2c_dp_aux_add_bus(struct i2c_adapter *adapter);
#define DP_LINK_STATUS_SIZE 6
-bool drm_dp_channel_eq_ok(u8 link_status[DP_LINK_STATUS_SIZE],
+bool drm_dp_channel_eq_ok(const u8 link_status[DP_LINK_STATUS_SIZE],
int lane_count);
-bool drm_dp_clock_recovery_ok(u8 link_status[DP_LINK_STATUS_SIZE],
+bool drm_dp_clock_recovery_ok(const u8 link_status[DP_LINK_STATUS_SIZE],
int lane_count);
-u8 drm_dp_get_adjust_request_voltage(u8 link_status[DP_LINK_STATUS_SIZE],
+u8 drm_dp_get_adjust_request_voltage(const u8 link_status[DP_LINK_STATUS_SIZE],
int lane);
-u8 drm_dp_get_adjust_request_pre_emphasis(u8 link_status[DP_LINK_STATUS_SIZE],
+u8 drm_dp_get_adjust_request_pre_emphasis(const 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]);
+void drm_dp_link_train_clock_recovery_delay(const u8 dpcd[DP_RECEIVER_CAP_SIZE]);
+void drm_dp_link_train_channel_eq_delay(const 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);
@@ -379,13 +379,13 @@ struct edp_vsc_psr {
#define EDP_VSC_PSR_CRC_VALUES_VALID (1<<2)
static inline int
-drm_dp_max_link_rate(u8 dpcd[DP_RECEIVER_CAP_SIZE])
+drm_dp_max_link_rate(const u8 dpcd[DP_RECEIVER_CAP_SIZE])
{
return drm_dp_bw_code_to_link_rate(dpcd[DP_MAX_LINK_RATE]);
}
static inline u8
-drm_dp_max_lane_count(u8 dpcd[DP_RECEIVER_CAP_SIZE])
+drm_dp_max_lane_count(const u8 dpcd[DP_RECEIVER_CAP_SIZE])
{
return dpcd[DP_MAX_LANE_COUNT] & DP_MAX_LANE_COUNT_MASK;
}

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