2 * Copyright 2008 Advanced Micro Devices, Inc.
3 * Copyright 2008 Red Hat Inc.
4 * Copyright 2009 Christian König.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
24 * Authors: Christian König
27 * $FreeBSD: head/sys/dev/drm2/radeon/evergreen_hdmi.c 254885 2013-08-25 19:37:15Z dumbbell $
31 #include <uapi_drm/radeon_drm.h>
33 #include "radeon_asic.h"
34 #include "evergreend.h"
38 * update the N and CTS parameters for a given pixel clock rate
40 static void evergreen_hdmi_update_ACR(struct drm_encoder *encoder, uint32_t clock)
42 struct drm_device *dev = encoder->dev;
43 struct radeon_device *rdev = dev->dev_private;
44 struct radeon_hdmi_acr acr = r600_hdmi_acr(clock);
45 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
46 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
47 uint32_t offset = dig->afmt->offset;
49 WREG32(HDMI_ACR_32_0 + offset, HDMI_ACR_CTS_32(acr.cts_32khz));
50 WREG32(HDMI_ACR_32_1 + offset, acr.n_32khz);
52 WREG32(HDMI_ACR_44_0 + offset, HDMI_ACR_CTS_44(acr.cts_44_1khz));
53 WREG32(HDMI_ACR_44_1 + offset, acr.n_44_1khz);
55 WREG32(HDMI_ACR_48_0 + offset, HDMI_ACR_CTS_48(acr.cts_48khz));
56 WREG32(HDMI_ACR_48_1 + offset, acr.n_48khz);
60 * calculate the crc for a given info frame
62 static void evergreen_hdmi_infoframe_checksum(uint8_t packetType,
63 uint8_t versionNumber,
68 frame[0] = packetType + versionNumber + length;
69 for (i = 1; i <= length; i++)
71 frame[0] = 0x100 - frame[0];
75 * build a HDMI Video Info Frame
77 static void evergreen_hdmi_videoinfoframe(
78 struct drm_encoder *encoder,
80 int active_information_present,
81 uint8_t active_format_aspect_ratio,
82 uint8_t scan_information,
84 uint8_t ex_colorimetry,
87 uint8_t picture_aspect_ratio,
88 uint8_t video_format_identification,
89 uint8_t pixel_repetition,
90 uint8_t non_uniform_picture_scaling,
91 uint8_t bar_info_data_valid,
98 struct drm_device *dev = encoder->dev;
99 struct radeon_device *rdev = dev->dev_private;
100 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
101 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
102 uint32_t offset = dig->afmt->offset;
108 (scan_information & 0x3) |
109 ((bar_info_data_valid & 0x3) << 2) |
110 ((active_information_present & 0x1) << 4) |
111 ((color_format & 0x3) << 5);
113 (active_format_aspect_ratio & 0xF) |
114 ((picture_aspect_ratio & 0x3) << 4) |
115 ((colorimetry & 0x3) << 6);
117 (non_uniform_picture_scaling & 0x3) |
118 ((quantization & 0x3) << 2) |
119 ((ex_colorimetry & 0x7) << 4) |
121 frame[0x4] = (video_format_identification & 0x7F);
122 frame[0x5] = (pixel_repetition & 0xF);
123 frame[0x6] = (top_bar & 0xFF);
124 frame[0x7] = (top_bar >> 8);
125 frame[0x8] = (bottom_bar & 0xFF);
126 frame[0x9] = (bottom_bar >> 8);
127 frame[0xA] = (left_bar & 0xFF);
128 frame[0xB] = (left_bar >> 8);
129 frame[0xC] = (right_bar & 0xFF);
130 frame[0xD] = (right_bar >> 8);
132 evergreen_hdmi_infoframe_checksum(0x82, 0x02, 0x0D, frame);
133 /* Our header values (type, version, length) should be alright, Intel
134 * is using the same. Checksum function also seems to be OK, it works
135 * fine for audio infoframe. However calculated value is always lower
136 * by 2 in comparison to fglrx. It breaks displaying anything in case
137 * of TVs that strictly check the checksum. Hack it manually here to
138 * workaround this issue. */
141 WREG32(AFMT_AVI_INFO0 + offset,
142 frame[0x0] | (frame[0x1] << 8) | (frame[0x2] << 16) | (frame[0x3] << 24));
143 WREG32(AFMT_AVI_INFO1 + offset,
144 frame[0x4] | (frame[0x5] << 8) | (frame[0x6] << 16) | (frame[0x7] << 24));
145 WREG32(AFMT_AVI_INFO2 + offset,
146 frame[0x8] | (frame[0x9] << 8) | (frame[0xA] << 16) | (frame[0xB] << 24));
147 WREG32(AFMT_AVI_INFO3 + offset,
148 frame[0xC] | (frame[0xD] << 8));
152 * update the info frames with the data from the current display mode
154 void evergreen_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode *mode)
156 struct drm_device *dev = encoder->dev;
157 struct radeon_device *rdev = dev->dev_private;
158 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
159 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
162 /* Silent, r600_hdmi_enable will raise WARN for us */
163 if (!dig->afmt->enabled)
165 offset = dig->afmt->offset;
167 r600_audio_set_clock(encoder, mode->clock);
169 WREG32(HDMI_VBI_PACKET_CONTROL + offset,
170 HDMI_NULL_SEND); /* send null packets when required */
172 WREG32(AFMT_AUDIO_CRC_CONTROL + offset, 0x1000);
174 WREG32(HDMI_AUDIO_PACKET_CONTROL + offset,
175 HDMI_AUDIO_DELAY_EN(1) | /* set the default audio delay */
176 HDMI_AUDIO_PACKETS_PER_LINE(3)); /* should be suffient for all audio modes and small enough for all hblanks */
178 WREG32(AFMT_AUDIO_PACKET_CONTROL + offset,
179 AFMT_AUDIO_SAMPLE_SEND | /* send audio packets */
180 AFMT_60958_CS_UPDATE); /* allow 60958 channel status fields to be updated */
182 WREG32(HDMI_ACR_PACKET_CONTROL + offset,
183 HDMI_ACR_AUTO_SEND | /* allow hw to sent ACR packets when required */
184 HDMI_ACR_SOURCE); /* select SW CTS value */
186 WREG32(HDMI_VBI_PACKET_CONTROL + offset,
187 HDMI_NULL_SEND | /* send null packets when required */
188 HDMI_GC_SEND | /* send general control packets */
189 HDMI_GC_CONT); /* send general control packets every frame */
191 WREG32(HDMI_INFOFRAME_CONTROL0 + offset,
192 HDMI_AVI_INFO_SEND | /* enable AVI info frames */
193 HDMI_AVI_INFO_CONT | /* send AVI info frames every frame/field */
194 HDMI_AUDIO_INFO_SEND | /* enable audio info frames (frames won't be set until audio is enabled) */
195 HDMI_AUDIO_INFO_CONT); /* required for audio info values to be updated */
197 WREG32(AFMT_INFOFRAME_CONTROL0 + offset,
198 AFMT_AUDIO_INFO_UPDATE); /* required for audio info values to be updated */
200 WREG32(HDMI_INFOFRAME_CONTROL1 + offset,
201 HDMI_AVI_INFO_LINE(2) | /* anything other than 0 */
202 HDMI_AUDIO_INFO_LINE(2)); /* anything other than 0 */
204 WREG32(HDMI_GC + offset, 0); /* unset HDMI_GC_AVMUTE */
206 evergreen_hdmi_videoinfoframe(encoder, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
209 evergreen_hdmi_update_ACR(encoder, mode->clock);
211 /* it's unknown what these bits do excatly, but it's indeed quite useful for debugging */
212 WREG32(AFMT_RAMP_CONTROL0 + offset, 0x00FFFFFF);
213 WREG32(AFMT_RAMP_CONTROL1 + offset, 0x007FFFFF);
214 WREG32(AFMT_RAMP_CONTROL2 + offset, 0x00000001);
215 WREG32(AFMT_RAMP_CONTROL3 + offset, 0x00000001);