aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--drivers/media/dvb/frontends/au8522.c511
1 files changed, 382 insertions, 129 deletions
diff --git a/drivers/media/dvb/frontends/au8522.c b/drivers/media/dvb/frontends/au8522.c
index d445cf1..fa3e6ab 100644
--- a/drivers/media/dvb/frontends/au8522.c
+++ b/drivers/media/dvb/frontends/au8522.c
@@ -96,129 +96,388 @@ static int au8522_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
return au8522_writereg(state, 0x106, 0);
}
+/* VSB SNR lookup table */
+static struct {
+ u16 val;
+ u16 data;
+} vsb_mse2snr_tab[] = {
+ { 0, 270 },
+ { 2, 250 },
+ { 3, 240 },
+ { 5, 230 },
+ { 7, 220 },
+ { 9, 210 },
+ { 12, 200 },
+ { 13, 195 },
+ { 15, 190 },
+ { 17, 185 },
+ { 19, 180 },
+ { 21, 175 },
+ { 24, 170 },
+ { 27, 165 },
+ { 31, 160 },
+ { 32, 158 },
+ { 33, 156 },
+ { 36, 152 },
+ { 37, 150 },
+ { 39, 148 },
+ { 40, 146 },
+ { 41, 144 },
+ { 43, 142 },
+ { 44, 140 },
+ { 48, 135 },
+ { 50, 130 },
+ { 43, 142 },
+ { 53, 125 },
+ { 56, 120 },
+ { 256, 115 },
+};
+
+/* QAM64 SNR lookup table */
+static struct {
+ u16 val;
+ u16 data;
+} qam64_mse2snr_tab[] = {
+ { 15, 0 },
+ { 16, 290 },
+ { 17, 288 },
+ { 18, 286 },
+ { 19, 284 },
+ { 20, 282 },
+ { 21, 281 },
+ { 22, 279 },
+ { 23, 277 },
+ { 24, 275 },
+ { 25, 273 },
+ { 26, 271 },
+ { 27, 269 },
+ { 28, 268 },
+ { 29, 266 },
+ { 30, 264 },
+ { 31, 262 },
+ { 32, 260 },
+ { 33, 259 },
+ { 34, 258 },
+ { 35, 256 },
+ { 36, 255 },
+ { 37, 254 },
+ { 38, 252 },
+ { 39, 251 },
+ { 40, 250 },
+ { 41, 249 },
+ { 42, 248 },
+ { 43, 246 },
+ { 44, 245 },
+ { 45, 244 },
+ { 46, 242 },
+ { 47, 241 },
+ { 48, 240 },
+ { 50, 239 },
+ { 51, 238 },
+ { 53, 237 },
+ { 54, 236 },
+ { 56, 235 },
+ { 57, 234 },
+ { 59, 233 },
+ { 60, 232 },
+ { 62, 231 },
+ { 63, 230 },
+ { 65, 229 },
+ { 67, 228 },
+ { 68, 227 },
+ { 70, 226 },
+ { 71, 225 },
+ { 73, 224 },
+ { 74, 223 },
+ { 76, 222 },
+ { 78, 221 },
+ { 80, 220 },
+ { 82, 219 },
+ { 85, 218 },
+ { 88, 217 },
+ { 90, 216 },
+ { 92, 215 },
+ { 93, 214 },
+ { 94, 212 },
+ { 95, 211 },
+ { 97, 210 },
+ { 99, 209 },
+ { 101, 208 },
+ { 102, 207 },
+ { 104, 206 },
+ { 107, 205 },
+ { 111, 204 },
+ { 114, 203 },
+ { 118, 202 },
+ { 122, 201 },
+ { 125, 200 },
+ { 128, 199 },
+ { 130, 198 },
+ { 132, 197 },
+ { 256, 190 },
+};
+
+/* QAM256 SNR lookup table */
+static struct {
+ u16 val;
+ u16 data;
+} qam256_mse2snr_tab[] = {
+ { 16, 0 },
+ { 17, 400 },
+ { 18, 398 },
+ { 19, 396 },
+ { 20, 394 },
+ { 21, 392 },
+ { 22, 390 },
+ { 23, 388 },
+ { 24, 386 },
+ { 25, 384 },
+ { 26, 382 },
+ { 27, 380 },
+ { 28, 379 },
+ { 29, 378 },
+ { 30, 377 },
+ { 31, 376 },
+ { 32, 375 },
+ { 33, 374 },
+ { 34, 373 },
+ { 35, 372 },
+ { 36, 371 },
+ { 37, 370 },
+ { 38, 362 },
+ { 39, 354 },
+ { 40, 346 },
+ { 41, 338 },
+ { 42, 330 },
+ { 43, 328 },
+ { 44, 326 },
+ { 45, 324 },
+ { 46, 322 },
+ { 47, 320 },
+ { 48, 319 },
+ { 49, 318 },
+ { 50, 317 },
+ { 51, 316 },
+ { 52, 315 },
+ { 53, 314 },
+ { 54, 313 },
+ { 55, 312 },
+ { 56, 311 },
+ { 57, 310 },
+ { 58, 308 },
+ { 59, 306 },
+ { 60, 304 },
+ { 61, 302 },
+ { 62, 300 },
+ { 63, 298 },
+ { 65, 295 },
+ { 68, 294 },
+ { 70, 293 },
+ { 73, 292 },
+ { 76, 291 },
+ { 78, 290 },
+ { 79, 289 },
+ { 81, 288 },
+ { 82, 287 },
+ { 83, 286 },
+ { 84, 285 },
+ { 85, 284 },
+ { 86, 283 },
+ { 88, 282 },
+ { 89, 281 },
+ { 256, 280 },
+};
+
+static int au8522_vsb_mse2snr_lookup(int mse, u16 *snr)
+{
+ int i, ret = -EINVAL;
+ dprintk("%s()\n", __func__);
+
+ for (i = 0; i < ARRAY_SIZE(vsb_mse2snr_tab); i++) {
+ if (mse < vsb_mse2snr_tab[i].val) {
+ *snr = vsb_mse2snr_tab[i].data;
+ ret = 0;
+ break;
+ }
+ }
+ dprintk("%s() snr=%d\n", __func__, *snr);
+ return ret;
+}
+
+static int au8522_qam64_mse2snr_lookup(int mse, u16 *snr)
+{
+ int i, ret = -EINVAL;
+ dprintk("%s()\n", __func__);
+
+ for (i = 0; i < ARRAY_SIZE(qam64_mse2snr_tab); i++) {
+ if (mse < qam64_mse2snr_tab[i].val) {
+ *snr = qam64_mse2snr_tab[i].data;
+ ret = 0;
+ break;
+ }
+ }
+ dprintk("%s() snr=%d\n", __func__, *snr);
+ return ret;
+}
+
+static int au8522_qam256_mse2snr_lookup(int mse, u16 *snr)
+{
+ int i, ret = -EINVAL;
+ dprintk("%s()\n", __func__);
+
+ for (i = 0; i < ARRAY_SIZE(qam256_mse2snr_tab); i++) {
+ if (mse < qam256_mse2snr_tab[i].val) {
+ *snr = qam256_mse2snr_tab[i].data;
+ ret = 0;
+ break;
+ }
+ }
+ dprintk("%s() snr=%d\n", __func__, *snr);
+ return ret;
+}
+
+/* VSB Modulation table */
+static struct {
+ u16 reg;
+ u16 data;
+} VSB_mod_tab[] = {
+ { 0x8090, 0x84 },
+ { 0x4092, 0x11 },
+ { 0x2005, 0x00 },
+ { 0x8091, 0x80 },
+ { 0x80a3, 0x0c },
+ { 0x80a4, 0xe8 },
+ { 0x8081, 0xc4 },
+ { 0x80a5, 0x40 },
+ { 0x80a7, 0x40 },
+ { 0x80a6, 0x67 },
+ { 0x8262, 0x20 },
+ { 0x821c, 0x30 },
+ { 0x80d8, 0x1a },
+ { 0x8227, 0xa0 },
+ { 0x8121, 0xff },
+ { 0x80a8, 0xf0 },
+ { 0x80a9, 0x05 },
+ { 0x80aa, 0x77 },
+ { 0x80ab, 0xf0 },
+ { 0x80ac, 0x05 },
+ { 0x80ad, 0x77 },
+ { 0x80ae, 0x41 },
+ { 0x80af, 0x66 },
+ { 0x821b, 0xcc },
+ { 0x821d, 0x80 },
+ { 0x80b5, 0xfb },
+ { 0x80b6, 0x8e },
+ { 0x80b7, 0x39 },
+ { 0x80a4, 0xe8 },
+ { 0x8231, 0x13 },
+};
+
+/* QAM Modulation table */
+static struct {
+ u16 reg;
+ u16 data;
+} QAM_mod_tab[] = {
+ { 0x80a3, 0x09 },
+ { 0x80a4, 0x00 },
+ { 0x8081, 0xc4 },
+ { 0x80a5, 0x40 },
+ { 0x80b5, 0xfb },
+ { 0x80b6, 0x8e },
+ { 0x80b7, 0x39 },
+ { 0x80aa, 0x77 },
+ { 0x80ad, 0x77 },
+ { 0x80a6, 0x67 },
+ { 0x8262, 0x20 },
+ { 0x821c, 0x30 },
+ { 0x80b8, 0x3e },
+ { 0x80b9, 0xf0 },
+ { 0x80ba, 0x01 },
+ { 0x80bb, 0x18 },
+ { 0x80bc, 0x50 },
+ { 0x80bd, 0x00 },
+ { 0x80be, 0xea },
+ { 0x80bf, 0xef },
+ { 0x80c0, 0xfc },
+ { 0x80c1, 0xbd },
+ { 0x80c2, 0x1f },
+ { 0x80c3, 0xfc },
+ { 0x80c4, 0xdd },
+ { 0x80c5, 0xaf },
+ { 0x80c6, 0x00 },
+ { 0x80c7, 0x38 },
+ { 0x80c8, 0x30 },
+ { 0x80c9, 0x05 },
+ { 0x80ca, 0x4a },
+ { 0x80cb, 0xd0 },
+ { 0x80cc, 0x01 },
+ { 0x80cd, 0xd9 },
+ { 0x80ce, 0x6f },
+ { 0x80cf, 0xf9 },
+ { 0x80d0, 0x70 },
+ { 0x80d1, 0xdf },
+ { 0x80d2, 0xf7 },
+ { 0x80d3, 0xc2 },
+ { 0x80d4, 0xdf },
+ { 0x80d5, 0x02 },
+ { 0x80d6, 0x9a },
+ { 0x80d7, 0xd0 },
+ { 0x8250, 0x0d },
+ { 0x8251, 0xcd },
+ { 0x8252, 0xe0 },
+ { 0x8253, 0x05 },
+ { 0x8254, 0xa7 },
+ { 0x8255, 0xff },
+ { 0x8256, 0xed },
+ { 0x8257, 0x5b },
+ { 0x8258, 0xae },
+ { 0x8259, 0xe6 },
+ { 0x825a, 0x3d },
+ { 0x825b, 0x0f },
+ { 0x825c, 0x0d },
+ { 0x825d, 0xea },
+ { 0x825e, 0xf2 },
+ { 0x825f, 0x51 },
+ { 0x8260, 0xf5 },
+ { 0x8261, 0x06 },
+ { 0x821a, 0x00 },
+ { 0x8546, 0x40 },
+ { 0x8210, 0x26 },
+ { 0x8211, 0xf6 },
+ { 0x8212, 0x84 },
+ { 0x8213, 0x02 },
+ { 0x8502, 0x01 },
+ { 0x8121, 0x04 },
+ { 0x8122, 0x04 },
+ { 0x852e, 0x10 },
+ { 0x80a4, 0xca },
+ { 0x80a7, 0x40 },
+ { 0x8526, 0x01 },
+};
+
static int au8522_enable_modulation(struct dvb_frontend *fe,
fe_modulation_t m)
{
struct au8522_state *state = fe->demodulator_priv;
+ int i;
dprintk("%s(0x%08x)\n", __func__, m);
switch(m) {
case VSB_8:
dprintk("%s() VSB_8\n", __func__);
-
- //au8522_writereg(state, 0x410b, 0x84); // Serial
-
- //au8522_writereg(state, 0x8090, 0x82);
- au8522_writereg(state, 0x8090, 0x84);
- au8522_writereg(state, 0x4092, 0x11);
- au8522_writereg(state, 0x2005, 0x00);
- au8522_writereg(state, 0x8091, 0x80);
-
- au8522_writereg(state, 0x80a3, 0x0c);
- au8522_writereg(state, 0x80a4, 0xe8);
- au8522_writereg(state, 0x8081, 0xc4);
- au8522_writereg(state, 0x80a5, 0x40);
- au8522_writereg(state, 0x80a7, 0x40);
- au8522_writereg(state, 0x80a6, 0x67);
- au8522_writereg(state, 0x8262, 0x20);
- au8522_writereg(state, 0x821c, 0x30);
- au8522_writereg(state, 0x80d8, 0x1a);
- au8522_writereg(state, 0x8227, 0xa0);
- au8522_writereg(state, 0x8121, 0xff);
- au8522_writereg(state, 0x80a8, 0xf0);
- au8522_writereg(state, 0x80a9, 0x05);
- au8522_writereg(state, 0x80aa, 0x77);
- au8522_writereg(state, 0x80ab, 0xf0);
- au8522_writereg(state, 0x80ac, 0x05);
- au8522_writereg(state, 0x80ad, 0x77);
- au8522_writereg(state, 0x80ae, 0x41);
- au8522_writereg(state, 0x80af, 0x66);
- au8522_writereg(state, 0x821b, 0xcc);
- au8522_writereg(state, 0x821d, 0x80);
- au8522_writereg(state, 0x80b5, 0xfb);
- au8522_writereg(state, 0x80b6, 0x8e);
- au8522_writereg(state, 0x80b7, 0x39);
- au8522_writereg(state, 0x80a4, 0xe8);
- au8522_writereg(state, 0x8231, 0x13);
+ for (i = 0; i < ARRAY_SIZE(VSB_mod_tab); i++)
+ au8522_writereg(state,
+ VSB_mod_tab[i].reg,
+ VSB_mod_tab[i].data);
break;
case QAM_64:
case QAM_256:
- au8522_writereg(state, 0x80a3, 0x09);
- au8522_writereg(state, 0x80a4, 0x00);
- au8522_writereg(state, 0x8081, 0xc4);
- au8522_writereg(state, 0x80a5, 0x40);
- au8522_writereg(state, 0x80b5, 0xfb);
- au8522_writereg(state, 0x80b6, 0x8e);
- au8522_writereg(state, 0x80b7, 0x39);
- au8522_writereg(state, 0x80aa, 0x77);
- au8522_writereg(state, 0x80ad, 0x77);
- au8522_writereg(state, 0x80a6, 0x67);
- au8522_writereg(state, 0x8262, 0x20);
- au8522_writereg(state, 0x821c, 0x30);
- au8522_writereg(state, 0x80b8, 0x3e);
- au8522_writereg(state, 0x80b9, 0xf0);
- au8522_writereg(state, 0x80ba, 0x01);
- au8522_writereg(state, 0x80bb, 0x18);
- au8522_writereg(state, 0x80bc, 0x50);
- au8522_writereg(state, 0x80bd, 0x00);
- au8522_writereg(state, 0x80be, 0xea);
- au8522_writereg(state, 0x80bf, 0xef);
- au8522_writereg(state, 0x80c0, 0xfc);
- au8522_writereg(state, 0x80c1, 0xbd);
- au8522_writereg(state, 0x80c2, 0x1f);
- au8522_writereg(state, 0x80c3, 0xfc);
- au8522_writereg(state, 0x80c4, 0xdd);
- au8522_writereg(state, 0x80c5, 0xaf);
- au8522_writereg(state, 0x80c6, 0x00);
- au8522_writereg(state, 0x80c7, 0x38);
- au8522_writereg(state, 0x80c8, 0x30);
- au8522_writereg(state, 0x80c9, 0x05);
- au8522_writereg(state, 0x80ca, 0x4a);
- au8522_writereg(state, 0x80cb, 0xd0);
- au8522_writereg(state, 0x80cc, 0x01);
- au8522_writereg(state, 0x80cd, 0xd9);
- au8522_writereg(state, 0x80ce, 0x6f);
- au8522_writereg(state, 0x80cf, 0xf9);
- au8522_writereg(state, 0x80d0, 0x70);
- au8522_writereg(state, 0x80d1, 0xdf);
- au8522_writereg(state, 0x80d2, 0xf7);
- au8522_writereg(state, 0x80d3, 0xc2);
- au8522_writereg(state, 0x80d4, 0xdf);
- au8522_writereg(state, 0x80d5, 0x02);
- au8522_writereg(state, 0x80d6, 0x9a);
- au8522_writereg(state, 0x80d7, 0xd0);
- au8522_writereg(state, 0x8250, 0x0d);
- au8522_writereg(state, 0x8251, 0xcd);
- au8522_writereg(state, 0x8252, 0xe0);
- au8522_writereg(state, 0x8253, 0x05);
- au8522_writereg(state, 0x8254, 0xa7);
- au8522_writereg(state, 0x8255, 0xff);
- au8522_writereg(state, 0x8256, 0xed);
- au8522_writereg(state, 0x8257, 0x5b);
- au8522_writereg(state, 0x8258, 0xae);
- au8522_writereg(state, 0x8259, 0xe6);
- au8522_writereg(state, 0x825a, 0x3d);
- au8522_writereg(state, 0x825b, 0x0f);
- au8522_writereg(state, 0x825c, 0x0d);
- au8522_writereg(state, 0x825d, 0xea);
- au8522_writereg(state, 0x825e, 0xf2);
- au8522_writereg(state, 0x825f, 0x51);
- au8522_writereg(state, 0x8260, 0xf5);
- au8522_writereg(state, 0x8261, 0x06);
- au8522_writereg(state, 0x821a, 0x00);
- au8522_writereg(state, 0x8546, 0x40);
- au8522_writereg(state, 0x8210, 0x26);
- au8522_writereg(state, 0x8211, 0xf6);
- au8522_writereg(state, 0x8212, 0x84);
- au8522_writereg(state, 0x8213, 0x02);
- au8522_writereg(state, 0x8502, 0x01);
- au8522_writereg(state, 0x8121, 0x04);
- au8522_writereg(state, 0x8122, 0x04);
- au8522_writereg(state, 0x852e, 0x10);
- au8522_writereg(state, 0x80a4, 0xca);
- au8522_writereg(state, 0x80a7, 0x40);
- au8522_writereg(state, 0x8526, 0x01);
+ dprintk("%s() QAM 64/256\n", __func__);
+ for (i = 0; i < ARRAY_SIZE(QAM_mod_tab); i++)
+ au8522_writereg(state,
+ QAM_mod_tab[i].reg,
+ QAM_mod_tab[i].data);
break;
default:
dprintk("%s() Invalid modulation\n", __func__);
@@ -321,30 +580,24 @@ static int au8522_read_status(struct dvb_frontend *fe, fe_status_t *status)
return 0;
}
-static int au8522_read_mse(struct dvb_frontend *fe)
+static int au8522_read_snr(struct dvb_frontend *fe, u16 *snr)
{
struct au8522_state *state = fe->demodulator_priv;
- int mse = 0;
+ int ret = -EINVAL;
- if (state->current_modulation == VSB_8)
- mse = au8522_readreg(state, 0x4311);
- else
- mse = au8522_readreg(state, 0x4522);
-
- dprintk("%s: %d\n", __func__, mse);
-
- return mse;
-}
-
-static int au8522_read_snr(struct dvb_frontend *fe, u16 *snr)
-{
dprintk("%s()\n", __func__);
- /* FIXME: This is mse, not snr
- * TODO: mse2snr */
- *snr = au8522_read_mse(fe);
-
- return 0;
+ if (state->current_modulation == QAM_256)
+ ret = au8522_qam256_mse2snr_lookup(
+ au8522_readreg(state, 0x4522), snr);
+ else if (state->current_modulation == QAM_64)
+ ret = au8522_qam64_mse2snr_lookup(
+ au8522_readreg(state, 0x4522), snr);
+ else /* VSB_8 */
+ ret = au8522_vsb_mse2snr_lookup(
+ au8522_readreg(state, 0x4311), snr);
+
+ return ret;
}
static int au8522_read_signal_strength(struct dvb_frontend *fe,
generated by cgit v1.1 at 2024-12-24 03:42:45 +0000