109c434b8SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only 21da177e4SLinus Torvalds /* radio-trust.c - Trust FM Radio card driver for Linux 2.2 31da177e4SLinus Torvalds * by Eric Lammerts <eric@scintilla.utwente.nl> 41da177e4SLinus Torvalds * 51da177e4SLinus Torvalds * Based on radio-aztech.c. Original notes: 61da177e4SLinus Torvalds * 71da177e4SLinus Torvalds * Adapted to support the Video for Linux API by 81da177e4SLinus Torvalds * Russell Kroll <rkroll@exploits.org>. Based on original tuner code by: 91da177e4SLinus Torvalds * 101da177e4SLinus Torvalds * Quay Ly 111da177e4SLinus Torvalds * Donald Song 121da177e4SLinus Torvalds * Jason Lewis (jlewis@twilight.vtc.vsc.edu) 131da177e4SLinus Torvalds * Scott McGrath (smcgrath@twilight.vtc.vsc.edu) 141da177e4SLinus Torvalds * William McGrath (wmcgrath@twilight.vtc.vsc.edu) 151da177e4SLinus Torvalds * 1632590819SMauro Carvalho Chehab * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@kernel.org> 171da177e4SLinus Torvalds */ 181da177e4SLinus Torvalds 191da177e4SLinus Torvalds #include <stdarg.h> 201da177e4SLinus Torvalds #include <linux/module.h> 211da177e4SLinus Torvalds #include <linux/init.h> 221da177e4SLinus Torvalds #include <linux/ioport.h> 23982eddb9SMauro Carvalho Chehab #include <linux/videodev2.h> 241dc8aafcSHans Verkuil #include <linux/io.h> 259f1dfccfSHans Verkuil #include <linux/slab.h> 261dc8aafcSHans Verkuil #include <media/v4l2-device.h> 2735ea11ffSHans Verkuil #include <media/v4l2-ioctl.h> 281d211f26SHans Verkuil #include "radio-isa.h" 291da177e4SLinus Torvalds 301dc8aafcSHans Verkuil MODULE_AUTHOR("Eric Lammerts, Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath"); 311dc8aafcSHans Verkuil MODULE_DESCRIPTION("A driver for the Trust FM Radio card."); 321dc8aafcSHans Verkuil MODULE_LICENSE("GPL"); 331d211f26SHans Verkuil MODULE_VERSION("0.1.99"); 34982eddb9SMauro Carvalho Chehab 351da177e4SLinus Torvalds /* acceptable ports: 0x350 (JP3 shorted), 0x358 (JP3 open) */ 361da177e4SLinus Torvalds 371da177e4SLinus Torvalds #ifndef CONFIG_RADIO_TRUST_PORT 381da177e4SLinus Torvalds #define CONFIG_RADIO_TRUST_PORT -1 391da177e4SLinus Torvalds #endif 401da177e4SLinus Torvalds 411d211f26SHans Verkuil #define TRUST_MAX 2 421dc8aafcSHans Verkuil 431d211f26SHans Verkuil static int io[TRUST_MAX] = { [0] = CONFIG_RADIO_TRUST_PORT, 441d211f26SHans Verkuil [1 ... (TRUST_MAX - 1)] = -1 }; 451d211f26SHans Verkuil static int radio_nr[TRUST_MAX] = { [0 ... (TRUST_MAX - 1)] = -1 }; 461d211f26SHans Verkuil 471d211f26SHans Verkuil module_param_array(io, int, NULL, 0444); 481d211f26SHans Verkuil MODULE_PARM_DESC(io, "I/O addresses of the Trust FM Radio card (0x350 or 0x358)"); 491d211f26SHans Verkuil module_param_array(radio_nr, int, NULL, 0444); 501d211f26SHans Verkuil MODULE_PARM_DESC(radio_nr, "Radio device numbers"); 511dc8aafcSHans Verkuil 521dc8aafcSHans Verkuil struct trust { 531d211f26SHans Verkuil struct radio_isa_card isa; 541dc8aafcSHans Verkuil int ioval; 551dc8aafcSHans Verkuil }; 561dc8aafcSHans Verkuil 571d211f26SHans Verkuil static struct radio_isa_card *trust_alloc(void) 581d211f26SHans Verkuil { 591d211f26SHans Verkuil struct trust *tr = kzalloc(sizeof(*tr), GFP_KERNEL); 601d211f26SHans Verkuil 611d211f26SHans Verkuil return tr ? &tr->isa : NULL; 621d211f26SHans Verkuil } 631da177e4SLinus Torvalds 641da177e4SLinus Torvalds /* i2c addresses */ 651da177e4SLinus Torvalds #define TDA7318_ADDR 0x88 661da177e4SLinus Torvalds #define TSA6060T_ADDR 0xc4 671da177e4SLinus Torvalds 681d211f26SHans Verkuil #define TR_DELAY do { inb(tr->isa.io); inb(tr->isa.io); inb(tr->isa.io); } while (0) 691d211f26SHans Verkuil #define TR_SET_SCL outb(tr->ioval |= 2, tr->isa.io) 701d211f26SHans Verkuil #define TR_CLR_SCL outb(tr->ioval &= 0xfd, tr->isa.io) 711d211f26SHans Verkuil #define TR_SET_SDA outb(tr->ioval |= 1, tr->isa.io) 721d211f26SHans Verkuil #define TR_CLR_SDA outb(tr->ioval &= 0xfe, tr->isa.io) 731da177e4SLinus Torvalds 741dc8aafcSHans Verkuil static void write_i2c(struct trust *tr, int n, ...) 751da177e4SLinus Torvalds { 761da177e4SLinus Torvalds unsigned char val, mask; 771da177e4SLinus Torvalds va_list args; 781da177e4SLinus Torvalds 791da177e4SLinus Torvalds va_start(args, n); 801da177e4SLinus Torvalds 811da177e4SLinus Torvalds /* start condition */ 821da177e4SLinus Torvalds TR_SET_SDA; 831da177e4SLinus Torvalds TR_SET_SCL; 841da177e4SLinus Torvalds TR_DELAY; 851da177e4SLinus Torvalds TR_CLR_SDA; 861da177e4SLinus Torvalds TR_CLR_SCL; 871da177e4SLinus Torvalds TR_DELAY; 881da177e4SLinus Torvalds 891da177e4SLinus Torvalds for (; n; n--) { 901da177e4SLinus Torvalds val = va_arg(args, unsigned); 911da177e4SLinus Torvalds for (mask = 0x80; mask; mask >>= 1) { 921da177e4SLinus Torvalds if (val & mask) 931da177e4SLinus Torvalds TR_SET_SDA; 941da177e4SLinus Torvalds else 951da177e4SLinus Torvalds TR_CLR_SDA; 961da177e4SLinus Torvalds TR_SET_SCL; 971da177e4SLinus Torvalds TR_DELAY; 981da177e4SLinus Torvalds TR_CLR_SCL; 991da177e4SLinus Torvalds TR_DELAY; 1001da177e4SLinus Torvalds } 1011da177e4SLinus Torvalds /* acknowledge bit */ 1021da177e4SLinus Torvalds TR_SET_SDA; 1031da177e4SLinus Torvalds TR_SET_SCL; 1041da177e4SLinus Torvalds TR_DELAY; 1051da177e4SLinus Torvalds TR_CLR_SCL; 1061da177e4SLinus Torvalds TR_DELAY; 1071da177e4SLinus Torvalds } 1081da177e4SLinus Torvalds 1091da177e4SLinus Torvalds /* stop condition */ 1101da177e4SLinus Torvalds TR_CLR_SDA; 1111da177e4SLinus Torvalds TR_DELAY; 1121da177e4SLinus Torvalds TR_SET_SCL; 1131da177e4SLinus Torvalds TR_DELAY; 1141da177e4SLinus Torvalds TR_SET_SDA; 1151da177e4SLinus Torvalds TR_DELAY; 1161da177e4SLinus Torvalds 1171da177e4SLinus Torvalds va_end(args); 1181da177e4SLinus Torvalds } 1191da177e4SLinus Torvalds 1201d211f26SHans Verkuil static int trust_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol) 1211da177e4SLinus Torvalds { 1221d211f26SHans Verkuil struct trust *tr = container_of(isa, struct trust, isa); 1231d211f26SHans Verkuil 1241d211f26SHans Verkuil tr->ioval = (tr->ioval & 0xf7) | (mute << 3); 1251d211f26SHans Verkuil outb(tr->ioval, isa->io); 1261d211f26SHans Verkuil write_i2c(tr, 2, TDA7318_ADDR, vol ^ 0x1f); 1271d211f26SHans Verkuil return 0; 1281d211f26SHans Verkuil } 1291d211f26SHans Verkuil 1301d211f26SHans Verkuil static int trust_s_stereo(struct radio_isa_card *isa, bool stereo) 1311d211f26SHans Verkuil { 1321d211f26SHans Verkuil struct trust *tr = container_of(isa, struct trust, isa); 1331d211f26SHans Verkuil 1341d211f26SHans Verkuil tr->ioval = (tr->ioval & 0xfb) | (!stereo << 2); 1351d211f26SHans Verkuil outb(tr->ioval, isa->io); 1361d211f26SHans Verkuil return 0; 1371d211f26SHans Verkuil } 1381d211f26SHans Verkuil 1391d211f26SHans Verkuil static u32 trust_g_signal(struct radio_isa_card *isa) 1401d211f26SHans Verkuil { 1411d211f26SHans Verkuil int i, v; 1421d211f26SHans Verkuil 1431d211f26SHans Verkuil for (i = 0, v = 0; i < 100; i++) 1441d211f26SHans Verkuil v |= inb(isa->io); 1451d211f26SHans Verkuil return (v & 1) ? 0 : 0xffff; 1461d211f26SHans Verkuil } 1471d211f26SHans Verkuil 1481d211f26SHans Verkuil static int trust_s_frequency(struct radio_isa_card *isa, u32 freq) 1491d211f26SHans Verkuil { 1501d211f26SHans Verkuil struct trust *tr = container_of(isa, struct trust, isa); 1511d211f26SHans Verkuil 1521d211f26SHans Verkuil freq /= 160; /* Convert to 10 kHz units */ 1531d211f26SHans Verkuil freq += 1070; /* Add 10.7 MHz IF */ 1541d211f26SHans Verkuil write_i2c(tr, 5, TSA6060T_ADDR, (freq << 1) | 1, 1551d211f26SHans Verkuil freq >> 7, 0x60 | ((freq >> 15) & 1), 0); 1561d211f26SHans Verkuil return 0; 1571da177e4SLinus Torvalds } 1581da177e4SLinus Torvalds 1591da177e4SLinus Torvalds static int basstreble2chip[15] = { 1601da177e4SLinus Torvalds 0, 1, 2, 3, 4, 5, 6, 7, 14, 13, 12, 11, 10, 9, 8 1611da177e4SLinus Torvalds }; 1621da177e4SLinus Torvalds 1631d211f26SHans Verkuil static int trust_s_ctrl(struct v4l2_ctrl *ctrl) 1641da177e4SLinus Torvalds { 1651d211f26SHans Verkuil struct radio_isa_card *isa = 1661d211f26SHans Verkuil container_of(ctrl->handler, struct radio_isa_card, hdl); 1671d211f26SHans Verkuil struct trust *tr = container_of(isa, struct trust, isa); 1681dc8aafcSHans Verkuil 169982eddb9SMauro Carvalho Chehab switch (ctrl->id) { 170982eddb9SMauro Carvalho Chehab case V4L2_CID_AUDIO_BASS: 1711d211f26SHans Verkuil write_i2c(tr, 2, TDA7318_ADDR, 0x60 | basstreble2chip[ctrl->val]); 172c5f822bfSDouglas Landgraf return 0; 173982eddb9SMauro Carvalho Chehab case V4L2_CID_AUDIO_TREBLE: 1741d211f26SHans Verkuil write_i2c(tr, 2, TDA7318_ADDR, 0x70 | basstreble2chip[ctrl->val]); 175c5f822bfSDouglas Landgraf return 0; 176982eddb9SMauro Carvalho Chehab } 177982eddb9SMauro Carvalho Chehab return -EINVAL; 178982eddb9SMauro Carvalho Chehab } 179982eddb9SMauro Carvalho Chehab 1801d211f26SHans Verkuil static const struct v4l2_ctrl_ops trust_ctrl_ops = { 1811d211f26SHans Verkuil .s_ctrl = trust_s_ctrl, 1821da177e4SLinus Torvalds }; 1831da177e4SLinus Torvalds 1841d211f26SHans Verkuil static int trust_initialize(struct radio_isa_card *isa) 1851da177e4SLinus Torvalds { 1861d211f26SHans Verkuil struct trust *tr = container_of(isa, struct trust, isa); 1871dc8aafcSHans Verkuil 1881dc8aafcSHans Verkuil tr->ioval = 0xf; 1891dc8aafcSHans Verkuil write_i2c(tr, 2, TDA7318_ADDR, 0x80); /* speaker att. LF = 0 dB */ 1901dc8aafcSHans Verkuil write_i2c(tr, 2, TDA7318_ADDR, 0xa0); /* speaker att. RF = 0 dB */ 1911dc8aafcSHans Verkuil write_i2c(tr, 2, TDA7318_ADDR, 0xc0); /* speaker att. LR = 0 dB */ 1921dc8aafcSHans Verkuil write_i2c(tr, 2, TDA7318_ADDR, 0xe0); /* speaker att. RR = 0 dB */ 1931dc8aafcSHans Verkuil write_i2c(tr, 2, TDA7318_ADDR, 0x40); /* stereo 1 input, gain = 18.75 dB */ 1941da177e4SLinus Torvalds 1951d211f26SHans Verkuil v4l2_ctrl_new_std(&isa->hdl, &trust_ctrl_ops, 1961d211f26SHans Verkuil V4L2_CID_AUDIO_BASS, 0, 15, 1, 8); 1971d211f26SHans Verkuil v4l2_ctrl_new_std(&isa->hdl, &trust_ctrl_ops, 1981d211f26SHans Verkuil V4L2_CID_AUDIO_TREBLE, 0, 15, 1, 8); 1991d211f26SHans Verkuil return isa->hdl.error; 20032958fddSHans Verkuil } 20132958fddSHans Verkuil 2021d211f26SHans Verkuil static const struct radio_isa_ops trust_ops = { 2031d211f26SHans Verkuil .init = trust_initialize, 2041d211f26SHans Verkuil .alloc = trust_alloc, 2051d211f26SHans Verkuil .s_mute_volume = trust_s_mute_volume, 2061d211f26SHans Verkuil .s_frequency = trust_s_frequency, 2071d211f26SHans Verkuil .s_stereo = trust_s_stereo, 2081d211f26SHans Verkuil .g_signal = trust_g_signal, 2091d211f26SHans Verkuil }; 21032958fddSHans Verkuil 2111d211f26SHans Verkuil static const int trust_ioports[] = { 0x350, 0x358 }; 2121da177e4SLinus Torvalds 2131d211f26SHans Verkuil static struct radio_isa_driver trust_driver = { 2141d211f26SHans Verkuil .driver = { 2151d211f26SHans Verkuil .match = radio_isa_match, 2161d211f26SHans Verkuil .probe = radio_isa_probe, 2171d211f26SHans Verkuil .remove = radio_isa_remove, 2181d211f26SHans Verkuil .driver = { 2191d211f26SHans Verkuil .name = "radio-trust", 2201d211f26SHans Verkuil }, 2211d211f26SHans Verkuil }, 2221d211f26SHans Verkuil .io_params = io, 2231d211f26SHans Verkuil .radio_nr_params = radio_nr, 2241d211f26SHans Verkuil .io_ports = trust_ioports, 2251d211f26SHans Verkuil .num_of_io_ports = ARRAY_SIZE(trust_ioports), 2261d211f26SHans Verkuil .region_size = 2, 2271d211f26SHans Verkuil .card = "Trust FM Radio", 2281d211f26SHans Verkuil .ops = &trust_ops, 2291d211f26SHans Verkuil .has_stereo = true, 2301d211f26SHans Verkuil .max_volume = 31, 2311d211f26SHans Verkuil }; 2321d211f26SHans Verkuil 2331d211f26SHans Verkuil static int __init trust_init(void) 2341da177e4SLinus Torvalds { 2351d211f26SHans Verkuil return isa_register_driver(&trust_driver.driver, TRUST_MAX); 2361d211f26SHans Verkuil } 2371dc8aafcSHans Verkuil 2381d211f26SHans Verkuil static void __exit trust_exit(void) 2391d211f26SHans Verkuil { 2401d211f26SHans Verkuil isa_unregister_driver(&trust_driver.driver); 2411da177e4SLinus Torvalds } 2421da177e4SLinus Torvalds 2431da177e4SLinus Torvalds module_init(trust_init); 2441d211f26SHans Verkuil module_exit(trust_exit); 245