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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 | /* * $Id: tda8290.c,v 1.7 2005/03/07 12:01:51 kraxel Exp $ * * i2c tv tuner chip device driver * controls the philips tda8290+75 tuner chip combo. */ #include <linux/i2c.h> #include <linux/videodev.h> #include <linux/delay.h> #include <media/tuner.h> /* ---------------------------------------------------------------------- */ struct freq_entry { u16 freq; u8 value; }; static struct freq_entry band_table[] = { { 0x2DF4, 0x1C }, { 0x2574, 0x14 }, { 0x22B4, 0x0C }, { 0x20D4, 0x0B }, { 0x1E74, 0x3B }, { 0x1C34, 0x33 }, { 0x16F4, 0x5B }, { 0x1454, 0x53 }, { 0x12D4, 0x52 }, { 0x1034, 0x4A }, { 0x0EE4, 0x7A }, { 0x0D34, 0x72 }, { 0x0B54, 0x9A }, { 0x0914, 0x91 }, { 0x07F4, 0x89 }, { 0x0774, 0xB9 }, { 0x067B, 0xB1 }, { 0x0634, 0xD9 }, { 0x05A4, 0xD8 }, // FM radio { 0x0494, 0xD0 }, { 0x03BC, 0xC8 }, { 0x0394, 0xF8 }, // 57250000 Hz { 0x0000, 0xF0 }, // 0 }; static struct freq_entry div_table[] = { { 0x1C34, 3 }, { 0x0D34, 2 }, { 0x067B, 1 }, { 0x0000, 0 }, }; static struct freq_entry agc_table[] = { { 0x22B4, 0x8F }, { 0x0B54, 0x9F }, { 0x09A4, 0x8F }, { 0x0554, 0x9F }, { 0x0000, 0xBF }, }; static __u8 get_freq_entry( struct freq_entry* table, __u16 freq) { while(table->freq && table->freq > freq) table++; return table->value; } /* ---------------------------------------------------------------------- */ static unsigned char i2c_enable_bridge[2] = { 0x21, 0xC0 }; static unsigned char i2c_disable_bridge[2] = { 0x21, 0x80 }; static unsigned char i2c_init_tda8275[14] = { 0x00, 0x00, 0x00, 0x00, 0x7C, 0x04, 0xA3, 0x3F, 0x2A, 0x04, 0xFF, 0x00, 0x00, 0x40 }; static unsigned char i2c_set_VS[2] = { 0x30, 0x6F }; static unsigned char i2c_set_GP01_CF[2] = { 0x20, 0x0B }; static unsigned char i2c_tda8290_reset[2] = { 0x00, 0x00 }; static unsigned char i2c_gainset_off[2] = { 0x28, 0x14 }; static unsigned char i2c_gainset_on[2] = { 0x28, 0x54 }; static unsigned char i2c_agc3_00[2] = { 0x80, 0x00 }; static unsigned char i2c_agc2_BF[2] = { 0x60, 0xBF }; static unsigned char i2c_cb1_D2[2] = { 0x30, 0xD2 }; static unsigned char i2c_cb1_56[2] = { 0x30, 0x56 }; static unsigned char i2c_cb1_52[2] = { 0x30, 0x52 }; static unsigned char i2c_cb1_50[2] = { 0x30, 0x50 }; static unsigned char i2c_agc2_7F[2] = { 0x60, 0x7F }; static unsigned char i2c_agc3_08[2] = { 0x80, 0x08 }; static struct i2c_msg i2c_msg_init[] = { { I2C_ADDR_TDA8275, 0, ARRAY_SIZE(i2c_init_tda8275), i2c_init_tda8275 }, { I2C_ADDR_TDA8290, 0, ARRAY_SIZE(i2c_disable_bridge), i2c_disable_bridge }, { I2C_ADDR_TDA8290, 0, ARRAY_SIZE(i2c_set_VS), i2c_set_VS }, { I2C_ADDR_TDA8290, 0, ARRAY_SIZE(i2c_set_GP01_CF), i2c_set_GP01_CF }, }; static struct i2c_msg i2c_msg_prolog[] = { // { I2C_ADDR_TDA8290, 0, ARRAY_SIZE(i2c_easy_mode), i2c_easy_mode }, { I2C_ADDR_TDA8290, 0, ARRAY_SIZE(i2c_gainset_off), i2c_gainset_off }, { I2C_ADDR_TDA8290, 0, ARRAY_SIZE(i2c_tda8290_reset), i2c_tda8290_reset }, { I2C_ADDR_TDA8290, 0, ARRAY_SIZE(i2c_enable_bridge), i2c_enable_bridge }, }; static struct i2c_msg i2c_msg_config[] = { // { I2C_ADDR_TDA8275, 0, ARRAY_SIZE(i2c_set_freq), i2c_set_freq }, { I2C_ADDR_TDA8275, 0, ARRAY_SIZE(i2c_agc3_00), i2c_agc3_00 }, { I2C_ADDR_TDA8275, 0, ARRAY_SIZE(i2c_agc2_BF), i2c_agc2_BF }, { I2C_ADDR_TDA8275, 0, ARRAY_SIZE(i2c_cb1_D2), i2c_cb1_D2 }, { I2C_ADDR_TDA8275, 0, ARRAY_SIZE(i2c_cb1_56), i2c_cb1_56 }, { I2C_ADDR_TDA8275, 0, ARRAY_SIZE(i2c_cb1_52), i2c_cb1_52 }, }; static struct i2c_msg i2c_msg_epilog[] = { { I2C_ADDR_TDA8275, 0, ARRAY_SIZE(i2c_cb1_50), i2c_cb1_50 }, { I2C_ADDR_TDA8275, 0, ARRAY_SIZE(i2c_agc2_7F), i2c_agc2_7F }, { I2C_ADDR_TDA8275, 0, ARRAY_SIZE(i2c_agc3_08), i2c_agc3_08 }, { I2C_ADDR_TDA8290, 0, ARRAY_SIZE(i2c_disable_bridge), i2c_disable_bridge }, { I2C_ADDR_TDA8290, 0, ARRAY_SIZE(i2c_gainset_on), i2c_gainset_on }, }; static int tda8290_tune(struct i2c_client *c) { struct tuner *t = i2c_get_clientdata(c); struct i2c_msg easy_mode = { I2C_ADDR_TDA8290, 0, 2, t->i2c_easy_mode }; struct i2c_msg set_freq = { I2C_ADDR_TDA8275, 0, 8, t->i2c_set_freq }; i2c_transfer(c->adapter, &easy_mode, 1); i2c_transfer(c->adapter, i2c_msg_prolog, ARRAY_SIZE(i2c_msg_prolog)); i2c_transfer(c->adapter, &set_freq, 1); i2c_transfer(c->adapter, i2c_msg_config, ARRAY_SIZE(i2c_msg_config)); msleep(550); i2c_transfer(c->adapter, i2c_msg_epilog, ARRAY_SIZE(i2c_msg_epilog)); return 0; } static void set_frequency(struct tuner *t, u16 ifc) { u32 N = (((t->freq<<3)+ifc)&0x3fffc); N = N >> get_freq_entry(div_table, t->freq); t->i2c_set_freq[0] = 0; t->i2c_set_freq[1] = (unsigned char)(N>>8); t->i2c_set_freq[2] = (unsigned char) N; t->i2c_set_freq[3] = 0x40; t->i2c_set_freq[4] = 0x52; t->i2c_set_freq[5] = get_freq_entry(band_table, t->freq); t->i2c_set_freq[6] = get_freq_entry(agc_table, t->freq); t->i2c_set_freq[7] = 0x8f; } #define V4L2_STD_MN (V4L2_STD_PAL_M|V4L2_STD_PAL_N|V4L2_STD_PAL_Nc|V4L2_STD_NTSC) #define V4L2_STD_B (V4L2_STD_PAL_B|V4L2_STD_PAL_B1|V4L2_STD_SECAM_B) #define V4L2_STD_GH (V4L2_STD_PAL_G|V4L2_STD_PAL_H|V4L2_STD_SECAM_G|V4L2_STD_SECAM_H) #define V4L2_STD_DK (V4L2_STD_PAL_DK|V4L2_STD_SECAM_DK) static void set_audio(struct tuner *t) { t->i2c_easy_mode[0] = 0x01; if (t->std & V4L2_STD_MN) t->i2c_easy_mode[1] = 0x01; else if (t->std & V4L2_STD_B) t->i2c_easy_mode[1] = 0x02; else if (t->std & V4L2_STD_GH) t->i2c_easy_mode[1] = 0x04; else if (t->std & V4L2_STD_PAL_I) t->i2c_easy_mode[1] = 0x08; else if (t->std & V4L2_STD_DK) t->i2c_easy_mode[1] = 0x10; else if (t->std & V4L2_STD_SECAM_L) t->i2c_easy_mode[1] = 0x20; } static void set_tv_freq(struct i2c_client *c, unsigned int freq) { struct tuner *t = i2c_get_clientdata(c); set_audio(t); set_frequency(t, 864); tda8290_tune(c); } static void set_radio_freq(struct i2c_client *c, unsigned int freq) { struct tuner *t = i2c_get_clientdata(c); set_frequency(t, 704); tda8290_tune(c); } static int has_signal(struct i2c_client *c) { unsigned char i2c_get_afc[1] = { 0x1B }; unsigned char afc = 0; i2c_master_send(c, i2c_get_afc, ARRAY_SIZE(i2c_get_afc)); i2c_master_recv(c, &afc, 1); return (afc & 0x80)? 65535:0; } int tda8290_init(struct i2c_client *c) { struct tuner *t = i2c_get_clientdata(c); strlcpy(c->name, "tda8290+75", sizeof(c->name)); tuner_info("tuner: type set to %s\n", c->name); t->tv_freq = set_tv_freq; t->radio_freq = set_radio_freq; t->has_signal = has_signal; i2c_master_send(c, i2c_enable_bridge, ARRAY_SIZE(i2c_enable_bridge)); i2c_transfer(c->adapter, i2c_msg_init, ARRAY_SIZE(i2c_msg_init)); return 0; } /* * Overrides for Emacs so that we follow Linus's tabbing style. * --------------------------------------------------------------------------- * Local variables: * c-basic-offset: 8 * End: */ |