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
28 #include "radeon_reg.h"
31 #define AUDIO_TIMER_INTERVALL 100 /* 1/10 sekund should be enough */
34 * check if the chipset is supported
36 static int r600_audio_chipset_supported(struct radeon_device
*rdev
)
38 return (rdev
->family
>= CHIP_R600
&& rdev
->family
< CHIP_CEDAR
)
39 || rdev
->family
== CHIP_RS600
40 || rdev
->family
== CHIP_RS690
41 || rdev
->family
== CHIP_RS740
;
45 * current number of channels
47 int r600_audio_channels(struct radeon_device
*rdev
)
49 return (RREG32(R600_AUDIO_RATE_BPS_CHANNEL
) & 0x7) + 1;
53 * current bits per sample
55 int r600_audio_bits_per_sample(struct radeon_device
*rdev
)
57 uint32_t value
= (RREG32(R600_AUDIO_RATE_BPS_CHANNEL
) & 0xF0) >> 4;
66 dev_err(rdev
->dev
, "Unknown bits per sample 0x%x using 16 instead\n",
73 * current sampling rate in HZ
75 int r600_audio_rate(struct radeon_device
*rdev
)
77 uint32_t value
= RREG32(R600_AUDIO_RATE_BPS_CHANNEL
);
85 result
*= ((value
>> 11) & 0x7) + 1;
86 result
/= ((value
>> 8) & 0x7) + 1;
92 * iec 60958 status bits
94 uint8_t r600_audio_status_bits(struct radeon_device
*rdev
)
96 return RREG32(R600_AUDIO_STATUS_BITS
) & 0xff;
100 * iec 60958 category code
102 uint8_t r600_audio_category_code(struct radeon_device
*rdev
)
104 return (RREG32(R600_AUDIO_STATUS_BITS
) >> 8) & 0xff;
108 * schedule next audio update event
110 void r600_audio_schedule_polling(struct radeon_device
*rdev
)
112 mod_timer(&rdev
->audio_timer
,
113 jiffies
+ msecs_to_jiffies(AUDIO_TIMER_INTERVALL
));
117 * update all hdmi interfaces with current audio parameters
119 static void r600_audio_update_hdmi(unsigned long param
)
121 struct radeon_device
*rdev
= (struct radeon_device
*)param
;
122 struct drm_device
*dev
= rdev
->ddev
;
124 int channels
= r600_audio_channels(rdev
);
125 int rate
= r600_audio_rate(rdev
);
126 int bps
= r600_audio_bits_per_sample(rdev
);
127 uint8_t status_bits
= r600_audio_status_bits(rdev
);
128 uint8_t category_code
= r600_audio_category_code(rdev
);
130 struct drm_encoder
*encoder
;
131 int changes
= 0, still_going
= 0;
133 changes
|= channels
!= rdev
->audio_channels
;
134 changes
|= rate
!= rdev
->audio_rate
;
135 changes
|= bps
!= rdev
->audio_bits_per_sample
;
136 changes
|= status_bits
!= rdev
->audio_status_bits
;
137 changes
|= category_code
!= rdev
->audio_category_code
;
140 rdev
->audio_channels
= channels
;
141 rdev
->audio_rate
= rate
;
142 rdev
->audio_bits_per_sample
= bps
;
143 rdev
->audio_status_bits
= status_bits
;
144 rdev
->audio_category_code
= category_code
;
147 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
) {
148 struct radeon_encoder
*radeon_encoder
= to_radeon_encoder(encoder
);
149 still_going
|= radeon_encoder
->audio_polling_active
;
150 if (changes
|| r600_hdmi_buffer_status_changed(encoder
))
151 r600_hdmi_update_audio_settings(encoder
);
155 r600_audio_schedule_polling(rdev
);
159 * turn on/off audio engine
161 static void r600_audio_engine_enable(struct radeon_device
*rdev
, bool enable
)
163 DRM_INFO("%s audio support\n", enable
? "Enabling" : "Disabling");
164 WREG32_P(R600_AUDIO_ENABLE
, enable
? 0x81000000 : 0x0, ~0x81000000);
165 rdev
->audio_enabled
= enable
;
169 * initialize the audio vars and register the update timer
171 int r600_audio_init(struct radeon_device
*rdev
)
173 if (!radeon_audio
|| !r600_audio_chipset_supported(rdev
))
176 r600_audio_engine_enable(rdev
, true);
178 rdev
->audio_channels
= -1;
179 rdev
->audio_rate
= -1;
180 rdev
->audio_bits_per_sample
= -1;
181 rdev
->audio_status_bits
= 0;
182 rdev
->audio_category_code
= 0;
186 r600_audio_update_hdmi
,
187 (unsigned long)rdev
);
193 * enable the polling timer, to check for status changes
195 void r600_audio_enable_polling(struct drm_encoder
*encoder
)
197 struct drm_device
*dev
= encoder
->dev
;
198 struct radeon_device
*rdev
= dev
->dev_private
;
199 struct radeon_encoder
*radeon_encoder
= to_radeon_encoder(encoder
);
201 DRM_DEBUG("r600_audio_enable_polling: %d\n",
202 radeon_encoder
->audio_polling_active
);
203 if (radeon_encoder
->audio_polling_active
)
206 radeon_encoder
->audio_polling_active
= 1;
207 if (rdev
->audio_enabled
)
208 mod_timer(&rdev
->audio_timer
, jiffies
+ 1);
212 * disable the polling timer, so we get no more status updates
214 void r600_audio_disable_polling(struct drm_encoder
*encoder
)
216 struct radeon_encoder
*radeon_encoder
= to_radeon_encoder(encoder
);
217 DRM_DEBUG("r600_audio_disable_polling: %d\n",
218 radeon_encoder
->audio_polling_active
);
219 radeon_encoder
->audio_polling_active
= 0;
223 * atach the audio codec to the clock source of the encoder
225 void r600_audio_set_clock(struct drm_encoder
*encoder
, int clock
)
227 struct drm_device
*dev
= encoder
->dev
;
228 struct radeon_device
*rdev
= dev
->dev_private
;
229 struct radeon_encoder
*radeon_encoder
= to_radeon_encoder(encoder
);
230 struct radeon_encoder_atom_dig
*dig
= radeon_encoder
->enc_priv
;
231 int base_rate
= 48000;
233 switch (radeon_encoder
->encoder_id
) {
234 case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1
:
235 case ENCODER_OBJECT_ID_INTERNAL_LVTM1
:
236 WREG32_P(R600_AUDIO_TIMING
, 0, ~0x301);
238 case ENCODER_OBJECT_ID_INTERNAL_UNIPHY
:
239 case ENCODER_OBJECT_ID_INTERNAL_UNIPHY1
:
240 case ENCODER_OBJECT_ID_INTERNAL_UNIPHY2
:
241 case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_LVTMA
:
242 WREG32_P(R600_AUDIO_TIMING
, 0x100, ~0x301);
245 dev_err(rdev
->dev
, "Unsupported encoder type 0x%02X\n",
246 radeon_encoder
->encoder_id
);
250 switch (dig
->dig_encoder
) {
252 WREG32(R600_AUDIO_PLL1_MUL
, base_rate
* 50);
253 WREG32(R600_AUDIO_PLL1_DIV
, clock
* 100);
254 WREG32(R600_AUDIO_CLK_SRCSEL
, 0);
258 WREG32(R600_AUDIO_PLL2_MUL
, base_rate
* 50);
259 WREG32(R600_AUDIO_PLL2_DIV
, clock
* 100);
260 WREG32(R600_AUDIO_CLK_SRCSEL
, 1);
263 dev_err(rdev
->dev
, "Unsupported DIG on encoder 0x%02X\n",
264 radeon_encoder
->encoder_id
);
270 * release the audio timer
271 * TODO: How to do this correctly on SMP systems?
273 void r600_audio_fini(struct radeon_device
*rdev
)
275 if (!rdev
->audio_enabled
)
278 del_timer(&rdev
->audio_timer
);
280 r600_audio_engine_enable(rdev
, false);