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drm/i915: use drm DP helper to read DPCD desc

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Switch to using the common DP helpers instead of using our own.

v2: also remove leftover struct intel_dp_desc (Daniel)

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Jani Nikula 2017-05-18 14:10:23 +03:00
parent 118b90f3f1
commit 84c367533b
3 changed files with 6 additions and 46 deletions
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37
drivers/gpu/drm/i915/intel_dp.c
View File

@ -1507,37 +1507,6 @@ static void intel_dp_print_rates(struct intel_dp *intel_dp)
DRM_DEBUG_KMS("common rates: %s\n", str);
}
bool
__intel_dp_read_desc(struct intel_dp *intel_dp, struct intel_dp_desc *desc)
{
u32 base = drm_dp_is_branch(intel_dp->dpcd) ? DP_BRANCH_OUI :
DP_SINK_OUI;
return drm_dp_dpcd_read(&intel_dp->aux, base, desc, sizeof(*desc)) ==
sizeof(*desc);
}
bool intel_dp_read_desc(struct intel_dp *intel_dp)
{
struct intel_dp_desc *desc = &intel_dp->desc;
bool oui_sup = intel_dp->dpcd[DP_DOWN_STREAM_PORT_COUNT] &
DP_OUI_SUPPORT;
int dev_id_len;
if (!__intel_dp_read_desc(intel_dp, desc))
return false;
dev_id_len = strnlen(desc->device_id, sizeof(desc->device_id));
DRM_DEBUG_KMS("DP %s: OUI %*phD%s dev-ID %*pE HW-rev %d.%d SW-rev %d.%d\n",
drm_dp_is_branch(intel_dp->dpcd) ? "branch" : "sink",
(int)sizeof(desc->oui), desc->oui, oui_sup ? "" : "(NS)",
dev_id_len, desc->device_id,
desc->hw_rev >> 4, desc->hw_rev & 0xf,
desc->sw_major_rev, desc->sw_minor_rev);
return true;
}
static int rate_to_index(int find, const int *rates)
{
int i = 0;
@ -3622,7 +3591,8 @@ intel_edp_init_dpcd(struct intel_dp *intel_dp)
if (!intel_dp_read_dpcd(intel_dp))
return false;
intel_dp_read_desc(intel_dp);
drm_dp_read_desc(&intel_dp->aux, &intel_dp->desc,
drm_dp_is_branch(intel_dp->dpcd));
if (intel_dp->dpcd[DP_DPCD_REV] >= 0x11)
dev_priv->no_aux_handshake = intel_dp->dpcd[DP_MAX_DOWNSPREAD] &
@ -4624,7 +4594,8 @@ intel_dp_long_pulse(struct intel_connector *intel_connector)
intel_dp_print_rates(intel_dp);
intel_dp_read_desc(intel_dp);
drm_dp_read_desc(&intel_dp->aux, &intel_dp->desc,
drm_dp_is_branch(intel_dp->dpcd));
intel_dp_configure_mst(intel_dp);

13
drivers/gpu/drm/i915/intel_drv.h
View File

@ -906,14 +906,6 @@ enum link_m_n_set {
M2_N2
};
struct intel_dp_desc {
u8 oui[3];
u8 device_id[6];
u8 hw_rev;
u8 sw_major_rev;
u8 sw_minor_rev;
} __packed;
struct intel_dp_compliance_data {
unsigned long edid;
uint8_t video_pattern;
@ -957,7 +949,7 @@ struct intel_dp {
/* Max link BW for the sink as per DPCD registers */
int max_sink_link_bw;
/* sink or branch descriptor */
struct intel_dp_desc desc;
struct drm_dp_desc desc;
struct drm_dp_aux aux;
enum intel_display_power_domain aux_power_domain;
uint8_t train_set[4];
@ -1532,9 +1524,6 @@ static inline unsigned int intel_dp_unused_lane_mask(int lane_count)
}
bool intel_dp_read_dpcd(struct intel_dp *intel_dp);
bool __intel_dp_read_desc(struct intel_dp *intel_dp,
struct intel_dp_desc *desc);
bool intel_dp_read_desc(struct intel_dp *intel_dp);
int intel_dp_link_required(int pixel_clock, int bpp);
int intel_dp_max_data_rate(int max_link_clock, int max_lanes);
bool intel_digital_port_connected(struct drm_i915_private *dev_priv,

2
drivers/gpu/drm/i915/intel_lspcon.c
View File

@ -240,7 +240,7 @@ bool lspcon_init(struct intel_digital_port *intel_dig_port)
return false;
}
intel_dp_read_desc(dp);
drm_dp_read_desc(&dp->aux, &dp->desc, drm_dp_is_branch(dp->dpcd));
DRM_DEBUG_KMS("Success: LSPCON init\n");
return true;