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sync

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This commit is contained in:
purplerain 2023-06-20 20:38:03 +00:00
parent 451579e149
commit a2dd1eda92
Signed by: purplerain
GPG key ID: F42C07F07E2E35B7
89 changed files with 1343 additions and 775 deletions
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32
sys/dev/pci/drm/i915/display/intel_dp_aux.c
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@ -119,6 +119,32 @@ static u32 skl_get_aux_clock_divider(struct intel_dp *intel_dp, int index)
return index ? 0 : 1;
}
static int intel_dp_aux_sync_len(void)
{
int precharge = 16; /* 10-16 */
int preamble = 16;
return precharge + preamble;
}
static int intel_dp_aux_fw_sync_len(void)
{
int precharge = 10; /* 10-16 */
int preamble = 8;
return precharge + preamble;
}
static int g4x_dp_aux_precharge_len(void)
{
int precharge_min = 10;
int preamble = 16;
/* HW wants the length of the extra precharge in 2us units */
return (intel_dp_aux_sync_len() -
precharge_min - preamble) / 2;
}
static u32 g4x_get_aux_send_ctl(struct intel_dp *intel_dp,
int send_bytes,
u32 aux_clock_divider)
@ -141,7 +167,7 @@ static u32 g4x_get_aux_send_ctl(struct intel_dp *intel_dp,
timeout |
DP_AUX_CH_CTL_RECEIVE_ERROR |
(send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) |
(3 << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) |
(g4x_dp_aux_precharge_len() << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) |
(aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT);
}
@ -165,8 +191,8 @@ static u32 skl_get_aux_send_ctl(struct intel_dp *intel_dp,
DP_AUX_CH_CTL_TIME_OUT_MAX |
DP_AUX_CH_CTL_RECEIVE_ERROR |
(send_bytes << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) |
DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL(24) |
DP_AUX_CH_CTL_SYNC_PULSE_SKL(32);
DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL(intel_dp_aux_fw_sync_len()) |
DP_AUX_CH_CTL_SYNC_PULSE_SKL(intel_dp_aux_sync_len());
if (intel_tc_port_in_tbt_alt_mode(dig_port))
ret |= DP_AUX_CH_CTL_TBT_IO;