--- /dev/null
+/*
+ * Copyright 2008 Advanced Micro Devices, Inc.
+ * Copyright 2008 Red Hat Inc.
+ * Copyright 2009 Christian König.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Christian König
+ * Rafał Miłecki
+ */
+#include "drmP.h"
+#include "radeon_drm.h"
+#include "radeon.h"
+#include "radeon_asic.h"
+#include "evergreend.h"
+#include "atom.h"
+
+/*
+ * update the N and CTS parameters for a given pixel clock rate
+ */
+static void evergreen_hdmi_update_ACR(struct drm_encoder *encoder, uint32_t clock)
+{
+ struct drm_device *dev = encoder->dev;
+ struct radeon_device *rdev = dev->dev_private;
+ struct radeon_hdmi_acr acr = r600_hdmi_acr(clock);
+ uint32_t offset = to_radeon_encoder(encoder)->hdmi_offset;
+
+ WREG32(HDMI_ACR_32_0 + offset, HDMI_ACR_CTS_32(acr.cts_32khz));
+ WREG32(HDMI_ACR_32_1 + offset, acr.n_32khz);
+
+ WREG32(HDMI_ACR_44_0 + offset, HDMI_ACR_CTS_44(acr.cts_44_1khz));
+ WREG32(HDMI_ACR_44_1 + offset, acr.n_44_1khz);
+
+ WREG32(HDMI_ACR_48_0 + offset, HDMI_ACR_CTS_48(acr.cts_48khz));
+ WREG32(HDMI_ACR_48_1 + offset, acr.n_48khz);
+}
+
+/*
+ * calculate the crc for a given info frame
+ */
+static void evergreen_hdmi_infoframe_checksum(uint8_t packetType,
+ uint8_t versionNumber,
+ uint8_t length,
+ uint8_t *frame)
+{
+ int i;
+ frame[0] = packetType + versionNumber + length;
+ for (i = 1; i <= length; i++)
+ frame[0] += frame[i];
+ frame[0] = 0x100 - frame[0];
+}
+
+/*
+ * build a HDMI Video Info Frame
+ */
+static void evergreen_hdmi_videoinfoframe(
+ struct drm_encoder *encoder,
+ uint8_t color_format,
+ int active_information_present,
+ uint8_t active_format_aspect_ratio,
+ uint8_t scan_information,
+ uint8_t colorimetry,
+ uint8_t ex_colorimetry,
+ uint8_t quantization,
+ int ITC,
+ uint8_t picture_aspect_ratio,
+ uint8_t video_format_identification,
+ uint8_t pixel_repetition,
+ uint8_t non_uniform_picture_scaling,
+ uint8_t bar_info_data_valid,
+ uint16_t top_bar,
+ uint16_t bottom_bar,
+ uint16_t left_bar,
+ uint16_t right_bar
+)
+{
+ struct drm_device *dev = encoder->dev;
+ struct radeon_device *rdev = dev->dev_private;
+ uint32_t offset = to_radeon_encoder(encoder)->hdmi_offset;
+
+ uint8_t frame[14];
+
+ frame[0x0] = 0;
+ frame[0x1] =
+ (scan_information & 0x3) |
+ ((bar_info_data_valid & 0x3) << 2) |
+ ((active_information_present & 0x1) << 4) |
+ ((color_format & 0x3) << 5);
+ frame[0x2] =
+ (active_format_aspect_ratio & 0xF) |
+ ((picture_aspect_ratio & 0x3) << 4) |
+ ((colorimetry & 0x3) << 6);
+ frame[0x3] =
+ (non_uniform_picture_scaling & 0x3) |
+ ((quantization & 0x3) << 2) |
+ ((ex_colorimetry & 0x7) << 4) |
+ ((ITC & 0x1) << 7);
+ frame[0x4] = (video_format_identification & 0x7F);
+ frame[0x5] = (pixel_repetition & 0xF);
+ frame[0x6] = (top_bar & 0xFF);
+ frame[0x7] = (top_bar >> 8);
+ frame[0x8] = (bottom_bar & 0xFF);
+ frame[0x9] = (bottom_bar >> 8);
+ frame[0xA] = (left_bar & 0xFF);
+ frame[0xB] = (left_bar >> 8);
+ frame[0xC] = (right_bar & 0xFF);
+ frame[0xD] = (right_bar >> 8);
+
+ evergreen_hdmi_infoframe_checksum(0x82, 0x02, 0x0D, frame);
+ /* Our header values (type, version, length) should be alright, Intel
+ * is using the same. Checksum function also seems to be OK, it works
+ * fine for audio infoframe. However calculated value is always lower
+ * by 2 in comparison to fglrx. It breaks displaying anything in case
+ * of TVs that strictly check the checksum. Hack it manually here to
+ * workaround this issue. */
+ frame[0x0] += 2;
+
+ WREG32(AFMT_AVI_INFO0 + offset,
+ frame[0x0] | (frame[0x1] << 8) | (frame[0x2] << 16) | (frame[0x3] << 24));
+ WREG32(AFMT_AVI_INFO1 + offset,
+ frame[0x4] | (frame[0x5] << 8) | (frame[0x6] << 16) | (frame[0x7] << 24));
+ WREG32(AFMT_AVI_INFO2 + offset,
+ frame[0x8] | (frame[0x9] << 8) | (frame[0xA] << 16) | (frame[0xB] << 24));
+ WREG32(AFMT_AVI_INFO3 + offset,
+ frame[0xC] | (frame[0xD] << 8));
+}
+
+/*
+ * update the info frames with the data from the current display mode
+ */
+void evergreen_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode *mode)
+{
+ struct drm_device *dev = encoder->dev;
+ struct radeon_device *rdev = dev->dev_private;
+ uint32_t offset = to_radeon_encoder(encoder)->hdmi_offset;
+
+ if (ASIC_IS_DCE5(rdev))
+ return;
+
+ if (!to_radeon_encoder(encoder)->hdmi_enabled)
+ return;
+
+ r600_audio_set_clock(encoder, mode->clock);
+
+ WREG32(AFMT_AUDIO_CRC_CONTROL + offset, 0x1000);
+ WREG32(HDMI_GC + offset, 0x0);
+
+ /* Send audio packets */
+ WREG32_P(AFMT_AUDIO_PACKET_CONTROL + offset,
+ AFMT_AUDIO_SAMPLE_SEND, ~AFMT_AUDIO_SAMPLE_SEND);
+
+ WREG32(HDMI_ACR_PACKET_CONTROL + offset, 0x1000);
+
+ evergreen_hdmi_update_ACR(encoder, mode->clock);
+
+ WREG32(HDMI_INFOFRAME_CONTROL0 + offset, 0x13);
+
+ WREG32(HDMI_INFOFRAME_CONTROL1 + offset, 0x202);
+
+ evergreen_hdmi_videoinfoframe(encoder, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0);
+
+ /* it's unknown what these bits do excatly, but it's indeed quite useful for debugging */
+ WREG32(AFMT_RAMP_CONTROL0 + offset, 0x00FFFFFF);
+ WREG32(AFMT_RAMP_CONTROL1 + offset, 0x007FFFFF);
+ WREG32(AFMT_RAMP_CONTROL2 + offset, 0x00000001);
+ WREG32(AFMT_RAMP_CONTROL3 + offset, 0x00000001);
+
+ /* audio packets per line, does anyone know how to calc this ? */
+ WREG32_P(AFMT_AUDIO_PACKET_CONTROL + offset, 0x00040000, ~0x001F0000);
+}
projects / platform / kernel / linux-rpi.git / commitdiff