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
26 * $FreeBSD: head/sys/dev/drm2/radeon/r600_audio.c 254885 2013-08-25 19:37:15Z dumbbell $
31 #include "radeon_reg.h"
32 #include "radeon_asic.h"
36 * check if enc_priv stores radeon_encoder_atom_dig
38 static bool radeon_dig_encoder(struct drm_encoder *encoder)
40 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
41 switch (radeon_encoder->encoder_id) {
42 case ENCODER_OBJECT_ID_INTERNAL_LVDS:
43 case ENCODER_OBJECT_ID_INTERNAL_TMDS1:
44 case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1:
45 case ENCODER_OBJECT_ID_INTERNAL_LVTM1:
46 case ENCODER_OBJECT_ID_INTERNAL_DVO1:
47 case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DVO1:
48 case ENCODER_OBJECT_ID_INTERNAL_DDI:
49 case ENCODER_OBJECT_ID_INTERNAL_UNIPHY:
50 case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_LVTMA:
51 case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1:
52 case ENCODER_OBJECT_ID_INTERNAL_UNIPHY2:
59 * check if the chipset is supported
61 static int r600_audio_chipset_supported(struct radeon_device *rdev)
63 return (rdev->family >= CHIP_R600 && !ASIC_IS_DCE6(rdev))
64 || rdev->family == CHIP_RS600
65 || rdev->family == CHIP_RS690
66 || rdev->family == CHIP_RS740;
69 struct r600_audio r600_audio_status(struct radeon_device *rdev)
71 struct r600_audio status;
74 value = RREG32(R600_AUDIO_RATE_BPS_CHANNEL);
76 /* number of channels */
77 status.channels = (value & 0x7) + 1;
80 switch ((value & 0xF0) >> 4) {
82 status.bits_per_sample = 8;
85 status.bits_per_sample = 16;
88 status.bits_per_sample = 20;
91 status.bits_per_sample = 24;
94 status.bits_per_sample = 32;
97 dev_err(rdev->dev, "Unknown bits per sample 0x%x, using 16\n",
99 status.bits_per_sample = 16;
102 /* current sampling rate in HZ */
107 status.rate *= ((value >> 11) & 0x7) + 1;
108 status.rate /= ((value >> 8) & 0x7) + 1;
110 value = RREG32(R600_AUDIO_STATUS_BITS);
112 /* iec 60958 status bits */
113 status.status_bits = value & 0xff;
115 /* iec 60958 category code */
116 status.category_code = (value >> 8) & 0xff;
122 * update all hdmi interfaces with current audio parameters
124 void r600_audio_update_hdmi(void *arg, int pending)
126 struct radeon_device *rdev = arg;
127 struct drm_device *dev = rdev->ddev;
128 struct r600_audio audio_status = r600_audio_status(rdev);
129 struct drm_encoder *encoder;
130 bool changed = false;
132 if (rdev->audio_status.channels != audio_status.channels ||
133 rdev->audio_status.rate != audio_status.rate ||
134 rdev->audio_status.bits_per_sample != audio_status.bits_per_sample ||
135 rdev->audio_status.status_bits != audio_status.status_bits ||
136 rdev->audio_status.category_code != audio_status.category_code) {
137 rdev->audio_status = audio_status;
141 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
142 if (!radeon_dig_encoder(encoder))
144 if (changed || r600_hdmi_buffer_status_changed(encoder))
145 r600_hdmi_update_audio_settings(encoder);
150 * turn on/off audio engine
152 static void r600_audio_engine_enable(struct radeon_device *rdev, bool enable)
155 DRM_INFO("%s audio support\n", enable ? "Enabling" : "Disabling");
156 if (ASIC_IS_DCE4(rdev)) {
158 value |= 0x81000000; /* Required to enable audio */
159 value |= 0x0e1000f0; /* fglrx sets that too */
161 WREG32(EVERGREEN_AUDIO_ENABLE, value);
163 WREG32_P(R600_AUDIO_ENABLE,
164 enable ? 0x81000000 : 0x0, ~0x81000000);
166 rdev->audio_enabled = enable;
170 * initialize the audio vars
172 int r600_audio_init(struct radeon_device *rdev)
174 if (!radeon_audio || !r600_audio_chipset_supported(rdev))
177 r600_audio_engine_enable(rdev, true);
179 rdev->audio_status.channels = -1;
180 rdev->audio_status.rate = -1;
181 rdev->audio_status.bits_per_sample = -1;
182 rdev->audio_status.status_bits = 0;
183 rdev->audio_status.category_code = 0;
189 * atach the audio codec to the clock source of the encoder
191 void r600_audio_set_clock(struct drm_encoder *encoder, int clock)
193 struct drm_device *dev = encoder->dev;
194 struct radeon_device *rdev = dev->dev_private;
195 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
196 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
197 struct radeon_crtc *radeon_crtc = to_radeon_crtc(encoder->crtc);
198 int base_rate = 48000;
200 switch (radeon_encoder->encoder_id) {
201 case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1:
202 case ENCODER_OBJECT_ID_INTERNAL_LVTM1:
203 WREG32_P(R600_AUDIO_TIMING, 0, ~0x301);
205 case ENCODER_OBJECT_ID_INTERNAL_UNIPHY:
206 case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1:
207 case ENCODER_OBJECT_ID_INTERNAL_UNIPHY2:
208 case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_LVTMA:
209 WREG32_P(R600_AUDIO_TIMING, 0x100, ~0x301);
212 dev_err(rdev->dev, "Unsupported encoder type 0x%02X\n",
213 radeon_encoder->encoder_id);
217 if (ASIC_IS_DCE4(rdev)) {
218 /* TODO: other PLLs? */
219 WREG32(EVERGREEN_AUDIO_PLL1_MUL, base_rate * 10);
220 WREG32(EVERGREEN_AUDIO_PLL1_DIV, clock * 10);
221 WREG32(EVERGREEN_AUDIO_PLL1_UNK, 0x00000071);
223 /* Select DTO source */
224 WREG32(0x5ac, radeon_crtc->crtc_id);
226 switch (dig->dig_encoder) {
228 WREG32(R600_AUDIO_PLL1_MUL, base_rate * 50);
229 WREG32(R600_AUDIO_PLL1_DIV, clock * 100);
230 WREG32(R600_AUDIO_CLK_SRCSEL, 0);
234 WREG32(R600_AUDIO_PLL2_MUL, base_rate * 50);
235 WREG32(R600_AUDIO_PLL2_DIV, clock * 100);
236 WREG32(R600_AUDIO_CLK_SRCSEL, 1);
240 "Unsupported DIG on encoder 0x%02X\n",
241 radeon_encoder->encoder_id);
248 * release the audio timer
249 * TODO: How to do this correctly on SMP systems?
251 void r600_audio_fini(struct radeon_device *rdev)
253 if (!rdev->audio_enabled)
256 r600_audio_engine_enable(rdev, false);