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path: root/drivers/media/video/cx18/cx18-av-audio.c
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Diffstat (limited to 'drivers/media/video/cx18/cx18-av-audio.c')
-rw-r--r--drivers/media/video/cx18/cx18-av-audio.c111
1 files changed, 94 insertions, 17 deletions
diff --git a/drivers/media/video/cx18/cx18-av-audio.c b/drivers/media/video/cx18/cx18-av-audio.c
index c40a286de1b9..0b55837880a7 100644
--- a/drivers/media/video/cx18/cx18-av-audio.c
+++ b/drivers/media/video/cx18/cx18-av-audio.c
@@ -30,7 +30,6 @@ static int set_audclk_freq(struct cx18 *cx, u32 freq)
30 if (freq != 32000 && freq != 44100 && freq != 48000) 30 if (freq != 32000 && freq != 44100 && freq != 48000)
31 return -EINVAL; 31 return -EINVAL;
32 32
33 /* common for all inputs and rates */
34 /* SA_MCLK_SEL=1, SA_MCLK_DIV=0x10 */ 33 /* SA_MCLK_SEL=1, SA_MCLK_DIV=0x10 */
35 cx18_av_write(cx, 0x127, 0x50); 34 cx18_av_write(cx, 0x127, 0x50);
36 35
@@ -38,15 +37,30 @@ static int set_audclk_freq(struct cx18 *cx, u32 freq)
38 switch (freq) { 37 switch (freq) {
39 case 32000: 38 case 32000:
40 /* VID_PLL and AUX_PLL */ 39 /* VID_PLL and AUX_PLL */
41 cx18_av_write4(cx, 0x108, 0x1006040f); 40 cx18_av_write4(cx, 0x108, 0x1408040f);
42 41
43 /* AUX_PLL_FRAC */ 42 /* AUX_PLL_FRAC */
44 cx18_av_write4(cx, 0x110, 0x01bb39ee); 43 /* 0x8.9504318a * 28,636,363.636 / 0x14 = 32000 * 384 */
44 cx18_av_write4(cx, 0x110, 0x012a0863);
45 45
46 /* src3/4/6_ctl = 0x0801f77f */ 46 /* src3/4/6_ctl */
47 /* 0x1.f77f = (4 * 15734.26) / 32000 */
47 cx18_av_write4(cx, 0x900, 0x0801f77f); 48 cx18_av_write4(cx, 0x900, 0x0801f77f);
48 cx18_av_write4(cx, 0x904, 0x0801f77f); 49 cx18_av_write4(cx, 0x904, 0x0801f77f);
49 cx18_av_write4(cx, 0x90c, 0x0801f77f); 50 cx18_av_write4(cx, 0x90c, 0x0801f77f);
51
52 /* SA_MCLK_SEL=1, SA_MCLK_DIV=0x14 */
53 cx18_av_write(cx, 0x127, 0x54);
54
55 /* AUD_COUNT = 0x2fff = 8 samples * 4 * 384 - 1 */
56 cx18_av_write4(cx, 0x12c, 0x11202fff);
57
58 /*
59 * EN_AV_LOCK = 1
60 * VID_COUNT = 0x0d2ef8 = 107999.000 * 8 =
61 * ((8 samples/32,000) * (13,500,000 * 8) * 4 - 1) * 8
62 */
63 cx18_av_write4(cx, 0x128, 0xa10d2ef8);
50 break; 64 break;
51 65
52 case 44100: 66 case 44100:
@@ -54,12 +68,24 @@ static int set_audclk_freq(struct cx18 *cx, u32 freq)
54 cx18_av_write4(cx, 0x108, 0x1009040f); 68 cx18_av_write4(cx, 0x108, 0x1009040f);
55 69
56 /* AUX_PLL_FRAC */ 70 /* AUX_PLL_FRAC */
57 cx18_av_write4(cx, 0x110, 0x00ec6bd6); 71 /* 0x9.7635e7 * 28,636,363.63 / 0x10 = 44100 * 384 */
72 cx18_av_write4(cx, 0x110, 0x00ec6bce);
58 73
59 /* src3/4/6_ctl = 0x08016d59 */ 74 /* src3/4/6_ctl */
75 /* 0x1.6d59 = (4 * 15734.26) / 44100 */
60 cx18_av_write4(cx, 0x900, 0x08016d59); 76 cx18_av_write4(cx, 0x900, 0x08016d59);
61 cx18_av_write4(cx, 0x904, 0x08016d59); 77 cx18_av_write4(cx, 0x904, 0x08016d59);
62 cx18_av_write4(cx, 0x90c, 0x08016d59); 78 cx18_av_write4(cx, 0x90c, 0x08016d59);
79
80 /* AUD_COUNT = 0x92ff = 49 samples * 2 * 384 - 1 */
81 cx18_av_write4(cx, 0x12c, 0x112092ff);
82
83 /*
84 * EN_AV_LOCK = 1
85 * VID_COUNT = 0x1d4bf8 = 239999.000 * 8 =
86 * ((49 samples/44,100) * (13,500,000 * 8) * 2 - 1) * 8
87 */
88 cx18_av_write4(cx, 0x128, 0xa11d4bf8);
63 break; 89 break;
64 90
65 case 48000: 91 case 48000:
@@ -67,12 +93,24 @@ static int set_audclk_freq(struct cx18 *cx, u32 freq)
67 cx18_av_write4(cx, 0x108, 0x100a040f); 93 cx18_av_write4(cx, 0x108, 0x100a040f);
68 94
69 /* AUX_PLL_FRAC */ 95 /* AUX_PLL_FRAC */
70 cx18_av_write4(cx, 0x110, 0x0098d6e5); 96 /* 0xa.4c6b6ea * 28,636,363.63 / 0x10 = 48000 * 384 */
97 cx18_av_write4(cx, 0x110, 0x0098d6dd);
71 98
72 /* src3/4/6_ctl = 0x08014faa */ 99 /* src3/4/6_ctl */
100 /* 0x1.4faa = (4 * 15734.26) / 48000 */
73 cx18_av_write4(cx, 0x900, 0x08014faa); 101 cx18_av_write4(cx, 0x900, 0x08014faa);
74 cx18_av_write4(cx, 0x904, 0x08014faa); 102 cx18_av_write4(cx, 0x904, 0x08014faa);
75 cx18_av_write4(cx, 0x90c, 0x08014faa); 103 cx18_av_write4(cx, 0x90c, 0x08014faa);
104
105 /* AUD_COUNT = 0x5fff = 4 samples * 16 * 384 - 1 */
106 cx18_av_write4(cx, 0x12c, 0x11205fff);
107
108 /*
109 * EN_AV_LOCK = 1
110 * VID_COUNT = 0x1193f8 = 143999.000 * 8 =
111 * ((4 samples/48,000) * (13,500,000 * 8) * 16 - 1) * 8
112 */
113 cx18_av_write4(cx, 0x128, 0xa11193f8);
76 break; 114 break;
77 } 115 }
78 } else { 116 } else {
@@ -82,18 +120,31 @@ static int set_audclk_freq(struct cx18 *cx, u32 freq)
82 cx18_av_write4(cx, 0x108, 0x1e08040f); 120 cx18_av_write4(cx, 0x108, 0x1e08040f);
83 121
84 /* AUX_PLL_FRAC */ 122 /* AUX_PLL_FRAC */
85 cx18_av_write4(cx, 0x110, 0x012a0869); 123 /* 0x8.9504318 * 28,636,363.63 / 0x1e = 32000 * 256 */
124 cx18_av_write4(cx, 0x110, 0x012a0863);
86 125
87 /* src1_ctl = 0x08010000 */ 126 /* src1_ctl */
127 /* 0x1.0000 = 32000/32000 */
88 cx18_av_write4(cx, 0x8f8, 0x08010000); 128 cx18_av_write4(cx, 0x8f8, 0x08010000);
89 129
90 /* src3/4/6_ctl = 0x08020000 */ 130 /* src3/4/6_ctl */
131 /* 0x2.0000 = 2 * (32000/32000) */
91 cx18_av_write4(cx, 0x900, 0x08020000); 132 cx18_av_write4(cx, 0x900, 0x08020000);
92 cx18_av_write4(cx, 0x904, 0x08020000); 133 cx18_av_write4(cx, 0x904, 0x08020000);
93 cx18_av_write4(cx, 0x90c, 0x08020000); 134 cx18_av_write4(cx, 0x90c, 0x08020000);
94 135
95 /* SA_MCLK_SEL=1, SA_MCLK_DIV=0x14 */ 136 /* SA_MCLK_SEL=1, SA_MCLK_DIV=0x14 */
96 cx18_av_write(cx, 0x127, 0x54); 137 cx18_av_write(cx, 0x127, 0x54);
138
139 /* AUD_COUNT = 0x1fff = 8 samples * 4 * 256 - 1 */
140 cx18_av_write4(cx, 0x12c, 0x11201fff);
141
142 /*
143 * EN_AV_LOCK = 1
144 * VID_COUNT = 0x0d2ef8 = 107999.000 * 8 =
145 * ((8 samples/32,000) * (13,500,000 * 8) * 4 - 1) * 8
146 */
147 cx18_av_write4(cx, 0x128, 0xa10d2ef8);
97 break; 148 break;
98 149
99 case 44100: 150 case 44100:
@@ -101,15 +152,28 @@ static int set_audclk_freq(struct cx18 *cx, u32 freq)
101 cx18_av_write4(cx, 0x108, 0x1809040f); 152 cx18_av_write4(cx, 0x108, 0x1809040f);
102 153
103 /* AUX_PLL_FRAC */ 154 /* AUX_PLL_FRAC */
104 cx18_av_write4(cx, 0x110, 0x00ec6bd6); 155 /* 0x9.7635e74 * 28,636,363.63 / 0x18 = 44100 * 256 */
156 cx18_av_write4(cx, 0x110, 0x00ec6bce);
105 157
106 /* src1_ctl = 0x08010000 */ 158 /* src1_ctl */
159 /* 0x1.60cd = 44100/32000 */
107 cx18_av_write4(cx, 0x8f8, 0x080160cd); 160 cx18_av_write4(cx, 0x8f8, 0x080160cd);
108 161
109 /* src3/4/6_ctl = 0x08020000 */ 162 /* src3/4/6_ctl */
163 /* 0x1.7385 = 2 * (32000/44100) */
110 cx18_av_write4(cx, 0x900, 0x08017385); 164 cx18_av_write4(cx, 0x900, 0x08017385);
111 cx18_av_write4(cx, 0x904, 0x08017385); 165 cx18_av_write4(cx, 0x904, 0x08017385);
112 cx18_av_write4(cx, 0x90c, 0x08017385); 166 cx18_av_write4(cx, 0x90c, 0x08017385);
167
168 /* AUD_COUNT = 0x61ff = 49 samples * 2 * 256 - 1 */
169 cx18_av_write4(cx, 0x12c, 0x112061ff);
170
171 /*
172 * EN_AV_LOCK = 1
173 * VID_COUNT = 0x1d4bf8 = 239999.000 * 8 =
174 * ((49 samples/44,100) * (13,500,000 * 8) * 2 - 1) * 8
175 */
176 cx18_av_write4(cx, 0x128, 0xa11d4bf8);
113 break; 177 break;
114 178
115 case 48000: 179 case 48000:
@@ -117,15 +181,28 @@ static int set_audclk_freq(struct cx18 *cx, u32 freq)
117 cx18_av_write4(cx, 0x108, 0x180a040f); 181 cx18_av_write4(cx, 0x108, 0x180a040f);
118 182
119 /* AUX_PLL_FRAC */ 183 /* AUX_PLL_FRAC */
120 cx18_av_write4(cx, 0x110, 0x0098d6e5); 184 /* 0xa.4c6b6ea * 28,636,363.63 / 0x18 = 48000 * 256 */
185 cx18_av_write4(cx, 0x110, 0x0098d6dd);
121 186
122 /* src1_ctl = 0x08010000 */ 187 /* src1_ctl */
188 /* 0x1.8000 = 48000/32000 */
123 cx18_av_write4(cx, 0x8f8, 0x08018000); 189 cx18_av_write4(cx, 0x8f8, 0x08018000);
124 190
125 /* src3/4/6_ctl = 0x08020000 */ 191 /* src3/4/6_ctl */
192 /* 0x1.5555 = 2 * (32000/48000) */
126 cx18_av_write4(cx, 0x900, 0x08015555); 193 cx18_av_write4(cx, 0x900, 0x08015555);
127 cx18_av_write4(cx, 0x904, 0x08015555); 194 cx18_av_write4(cx, 0x904, 0x08015555);
128 cx18_av_write4(cx, 0x90c, 0x08015555); 195 cx18_av_write4(cx, 0x90c, 0x08015555);
196
197 /* AUD_COUNT = 0x3fff = 4 samples * 16 * 256 - 1 */
198 cx18_av_write4(cx, 0x12c, 0x11203fff);
199
200 /*
201 * EN_AV_LOCK = 1
202 * VID_COUNT = 0x1193f8 = 143999.000 * 8 =
203 * ((4 samples/48,000) * (13,500,000 * 8) * 16 - 1) * 8
204 */
205 cx18_av_write4(cx, 0x128, 0xa11193f8);
129 break; 206 break;
130 } 207 }
131 } 208 }
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-22 17:19:51 -0500