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author | Andree Buschmann <AndreeBuschmann@t-online.de> | 2010-05-30 18:29:04 +0000 |
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committer | Andree Buschmann <AndreeBuschmann@t-online.de> | 2010-05-30 18:29:04 +0000 |
commit | f0e1cf038f6265fe71d5c3658e553b08c0eec163 (patch) | |
tree | e3fc9064ed3172851880c65fb81c7b89d6378fb5 /firmware | |
parent | 17889d4ec451fe3325ca4a450d74d923bab5d6e4 (diff) | |
download | rockbox-f0e1cf038f6265fe71d5c3658e553b08c0eec163.tar.gz rockbox-f0e1cf038f6265fe71d5c3658e553b08c0eec163.zip |
Submit FS#11240 by Raphael Jakse. Allows to reduce volume on WM8985 to -89 dB (e.g. used for Cowon D2). Below -57 dB the line out is affected. The manual is updated accordingly.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@26413 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware')
-rw-r--r-- | firmware/drivers/audio/wm8985.c | 75 | ||||
-rw-r--r-- | firmware/export/wm8985.h | 2 |
2 files changed, 59 insertions, 18 deletions
diff --git a/firmware/drivers/audio/wm8985.c b/firmware/drivers/audio/wm8985.c index da08b44402..a76e20e57b 100644 --- a/firmware/drivers/audio/wm8985.c +++ b/firmware/drivers/audio/wm8985.c | |||
@@ -42,6 +42,7 @@ | |||
42 | #define ADCCTL 0x0e | 42 | #define ADCCTL 0x0e |
43 | #define LADCVOL 0x0f | 43 | #define LADCVOL 0x0f |
44 | #define RADCVOL 0x10 | 44 | #define RADCVOL 0x10 |
45 | #define RDACVOL_DACVU 0x100 | ||
45 | 46 | ||
46 | #define EQ1 0x12 | 47 | #define EQ1 0x12 |
47 | #define EQ2 0x13 | 48 | #define EQ2 0x13 |
@@ -88,7 +89,7 @@ | |||
88 | #define BIASCTL 0x3d | 89 | #define BIASCTL 0x3d |
89 | 90 | ||
90 | const struct sound_settings_info audiohw_settings[] = { | 91 | const struct sound_settings_info audiohw_settings[] = { |
91 | [SOUND_VOLUME] = {"dB", 0, 1, -58, 6, -25}, | 92 | [SOUND_VOLUME] = {"dB", 0, 1, -90, 6, -25}, |
92 | [SOUND_BASS] = {"dB", 0, 1, -12, 12, 0}, | 93 | [SOUND_BASS] = {"dB", 0, 1, -12, 12, 0}, |
93 | [SOUND_TREBLE] = {"dB", 0, 1, -12, 12, 0}, | 94 | [SOUND_TREBLE] = {"dB", 0, 1, -12, 12, 0}, |
94 | [SOUND_BALANCE] = {"%", 0, 1,-100, 100, 0}, | 95 | [SOUND_BALANCE] = {"%", 0, 1,-100, 100, 0}, |
@@ -111,21 +112,48 @@ const struct sound_settings_info audiohw_settings[] = { | |||
111 | unsigned int eq1_reg; | 112 | unsigned int eq1_reg; |
112 | unsigned int eq5_reg; | 113 | unsigned int eq5_reg; |
113 | 114 | ||
114 | /* convert tenth of dB volume (-57..6) to master volume register value */ | 115 | /* convert tenth of dB volume (-89..6) to master volume register value */ |
115 | int tenthdb2master(int db) | 116 | int tenthdb2master(int db) |
116 | { | 117 | { |
117 | /* +6 to -57dB in 1dB steps == 64 levels = 6 bits */ | 118 | /* Might have no sense, taken from wm8758.c : |
118 | /* 0111111 == +6dB (0x3f) = 63) */ | 119 | att DAC AMP result |
119 | /* 0111001 == 0dB (0x39) = 57) */ | 120 | +6dB 0 +6 96 |
120 | /* 0000001 == -56dB (0x01) = */ | 121 | 0dB 0 0 90 |
121 | /* 0000000 == -57dB (0x00) */ | 122 | -57dB 0 -57 33 |
122 | 123 | -58dB -1 -57 32 | |
123 | /* 1000000 == Mute (0x40) */ | 124 | -89dB -32 -57 1 |
125 | -90dB -oo -oo 0 */ | ||
124 | 126 | ||
125 | if (db < VOLUME_MIN) { | 127 | if (db < VOLUME_MIN) { |
126 | return 0x40; | 128 | return 0; |
127 | } else { | 129 | } else { |
128 | return((db/10)+57); | 130 | return (db-VOLUME_MIN)/10 + 1; |
131 | } | ||
132 | } | ||
133 | |||
134 | /* helper function coming from wm8758.c that calculates the register setting for amplifier and | ||
135 | DAC volume out of the input from tenthdb2master() */ | ||
136 | static void get_volume_params(int db, int *dac, int *amp) | ||
137 | { | ||
138 | /* should never happen, set max volume for amp and dac */ | ||
139 | if (db > 96) { | ||
140 | *dac = 255; | ||
141 | *amp = 63; | ||
142 | } | ||
143 | /* set dac to max and set volume for amp (better snr) */ | ||
144 | else if (db > 32) { | ||
145 | *dac = 255; | ||
146 | *amp = (db-90)+57; | ||
147 | } | ||
148 | /* set amp to min and reduce dac output */ | ||
149 | else if (db > 0) { | ||
150 | *dac = (db-33)*2 + 255; | ||
151 | *amp = 0; | ||
152 | } | ||
153 | /* mute all */ | ||
154 | else { | ||
155 | *dac = 0x00; | ||
156 | *amp = 0x40; | ||
129 | } | 157 | } |
130 | } | 158 | } |
131 | 159 | ||
@@ -190,16 +218,29 @@ void audiohw_postinit(void) | |||
190 | 218 | ||
191 | void audiohw_set_headphone_vol(int vol_l, int vol_r) | 219 | void audiohw_set_headphone_vol(int vol_l, int vol_r) |
192 | { | 220 | { |
193 | /* OUT1 */ | 221 | int dac_l, amp_l, dac_r, amp_r; |
194 | wmcodec_write(LOUT1VOL, 0x080 | vol_l); | 222 | get_volume_params(vol_l, &dac_l, &_l); |
195 | wmcodec_write(ROUT1VOL, 0x180 | vol_r); | 223 | get_volume_params(vol_r, &dac_r, &_r); |
224 | |||
225 | /* set DAC | ||
226 | Important: DAC is global and will also affect lineout */ | ||
227 | wmcodec_write(LDACVOL, dac_l); | ||
228 | wmcodec_write(RDACVOL, dac_r | RDACVOL_DACVU); | ||
229 | |||
230 | /* set headphone amp OUT1 */ | ||
231 | wmcodec_write(LOUT1VOL, amp_l | 0x080); | ||
232 | wmcodec_write(ROUT1VOL, amp_r | 0x180); | ||
196 | } | 233 | } |
197 | 234 | ||
198 | void audiohw_set_lineout_vol(int vol_l, int vol_r) | 235 | void audiohw_set_lineout_vol(int vol_l, int vol_r) |
199 | { | 236 | { |
200 | /* OUT2 */ | 237 | int dac_l, amp_l, dac_r, amp_r; |
201 | wmcodec_write(LOUT2VOL, vol_l); | 238 | get_volume_params(vol_l, &dac_l, &_l); |
202 | wmcodec_write(ROUT2VOL, 0x100 | vol_r); | 239 | get_volume_params(vol_r, &dac_r, &_r); |
240 | |||
241 | /* set lineout amp OUT2 */ | ||
242 | wmcodec_write(LOUT2VOL, amp_l); | ||
243 | wmcodec_write(ROUT2VOL, amp_r | 0x100); | ||
203 | } | 244 | } |
204 | 245 | ||
205 | void audiohw_set_aux_vol(int vol_l, int vol_r) | 246 | void audiohw_set_aux_vol(int vol_l, int vol_r) |
diff --git a/firmware/export/wm8985.h b/firmware/export/wm8985.h index c6b8e3825f..4538b5edc5 100644 --- a/firmware/export/wm8985.h +++ b/firmware/export/wm8985.h | |||
@@ -23,7 +23,7 @@ | |||
23 | #define _WM8985_H | 23 | #define _WM8985_H |
24 | 24 | ||
25 | /* volume/balance/treble/bass interdependency */ | 25 | /* volume/balance/treble/bass interdependency */ |
26 | #define VOLUME_MIN -570 | 26 | #define VOLUME_MIN -890 |
27 | #define VOLUME_MAX 60 | 27 | #define VOLUME_MAX 60 |
28 | 28 | ||
29 | #ifdef COWON_D2 | 29 | #ifdef COWON_D2 |