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MLK-17893 drm: imx: hdp: Adjust HDMI Vswing

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The HDMI voltage swing needs to be increased for HDMI compliance.

Signed-off-by: Oliver Brown <oliver.brown@nxp.com>
This commit is contained in:
Oliver Brown 2018-05-07 13:30:57 -05:00 committed by Jason Liu
parent 7561eb76c6
commit 70c788660a
1 changed files with 63 additions and 0 deletions
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63
drivers/gpu/drm/imx/hdp/imx-hdmi.c
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@ -237,6 +237,67 @@ static void hdmi_compute_colorimetry(struct drm_display_info *di,
HDMI_COLORIMETRY_NONE;
}
void hdmi_mode_set_vswing(state_struct *state)
{
GENERAL_Read_Register_response regresp[12];
Afe_write(state, 0x41e1, 0x7c0);
Afe_write(state, 0x43e1, 0x7c0);
Afe_write(state, 0x45e1, 0x7c0);
Afe_write(state, 0x47e1, 0x7c0);
Afe_write(state, 0x404C, 0x0);
Afe_write(state, 0x424C, 0x0);
Afe_write(state, 0x444C, 0x0);
Afe_write(state, 0x464C, 0x0);
Afe_write(state, 0x4047, 0x120);
Afe_write(state, 0x4247, 0x120);
Afe_write(state, 0x4447, 0x120);
Afe_write(state, 0x4647, 0x120);
regresp[0].val = Afe_read(state, 0x41e1);
regresp[1].val = Afe_read(state, 0x43e1);
regresp[2].val = Afe_read(state, 0x45e1);
regresp[3].val = Afe_read(state, 0x47e1);
regresp[4].val = Afe_read(state, 0x404C);
regresp[5].val = Afe_read(state, 0x424C);
regresp[6].val = Afe_read(state, 0x444C);
regresp[7].val = Afe_read(state, 0x464C);
regresp[8].val = Afe_read(state, 0x4047);
regresp[9].val = Afe_read(state, 0x4247);
regresp[10].val = Afe_read(state, 0x4447);
regresp[11].val = Afe_read(state, 0x4647);
DRM_DEBUG("LANE0_TX_DIAG_TX_DRV 0x%x \n"
"LANE1_TX_DIAG_TX_DRV 0x%x \n"
"LANE2_TX_DIAG_TX_DRV 0x%x \n"
"LANE3_TX_DIAG_TX_DRV 0x%x \n"
"Lane0_TX_TXCC_CPOST_MULT_00 0x%x \n"
"Lane1_TX_TXCC_CPOST_MULT_00 0x%x \n"
"Lane2_TX_TXCC_CPOST_MULT_00 0x%x \n"
"Lane3_TX_TXCC_CPOST_MULT_00 0x%x \n"
"Lane0_TX_TXCC_CAL_SCLR_MULT 0x%x \n"
"Lane1_TX_TXCC_CAL_SCLR_MULT 0x%x \n"
"Lane2_TX_TXCC_CAL_SCLR_MULT 0x%x \n"
"Lane3_TX_TXCC_CAL_SCLR_MULT 0x%x \n",
regresp[0].val,
regresp[1].val,
regresp[2].val,
regresp[3].val,
regresp[4].val,
regresp[5].val,
regresp[6].val,
regresp[7].val,
regresp[8].val,
regresp[9].val,
regresp[10].val,
regresp[11].val
);
}
void hdmi_mode_set_t28hpc(state_struct *state, struct drm_display_mode *mode, int format, int color_depth, int temp)
{
struct imx_hdp *hdp = container_of(state, struct imx_hdp, state);
@ -278,6 +339,8 @@ void hdmi_mode_set_t28hpc(state_struct *state, struct drm_display_mode *mode, in
DRM_ERROR("CDN_API_HDMITX_SetVic_blocking ret = %d\n", ret);
return;
}
hdmi_mode_set_vswing(state);
}
int hdmi_get_edid_block(void *data, u8 *buf, u32 block, size_t len)