1cc3c6df1SHans Verkuil /* 2cc3c6df1SHans Verkuil * AimsLab RadioTrack (aka RadioVeveal) driver 3cc3c6df1SHans Verkuil * 4cc3c6df1SHans Verkuil * Copyright 1997 M. Kirkwood 5cc3c6df1SHans Verkuil * 6cc3c6df1SHans Verkuil * Converted to the radio-isa framework by Hans Verkuil <hans.verkuil@cisco.com> 732590819SMauro Carvalho Chehab * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@kernel.org> 8d9b01449SAlan Cox * Converted to new API by Alan Cox <alan@lxorguk.ukuu.org.uk> 91da177e4SLinus Torvalds * Various bugfixes and enhancements by Russell Kroll <rkroll@exploits.org> 101da177e4SLinus Torvalds * 111da177e4SLinus Torvalds * Notes on the hardware (reverse engineered from other peoples' 121da177e4SLinus Torvalds * reverse engineering of AIMS' code :-) 131da177e4SLinus Torvalds * 141da177e4SLinus Torvalds * Frequency control is done digitally -- ie out(port,encodefreq(95.8)); 151da177e4SLinus Torvalds * 161da177e4SLinus Torvalds * The signal strength query is unsurprisingly inaccurate. And it seems 171da177e4SLinus Torvalds * to indicate that (on my card, at least) the frequency setting isn't 181da177e4SLinus Torvalds * too great. (I have to tune up .025MHz from what the freq should be 191da177e4SLinus Torvalds * to get a report that the thing is tuned.) 201da177e4SLinus Torvalds * 211da177e4SLinus Torvalds * Volume control is (ugh) analogue: 221da177e4SLinus Torvalds * out(port, start_increasing_volume); 231da177e4SLinus Torvalds * wait(a_wee_while); 241da177e4SLinus Torvalds * out(port, stop_changing_the_volume); 251da177e4SLinus Torvalds * 26cc3c6df1SHans Verkuil * Fully tested with the Keene USB FM Transmitter and the v4l2-compliance tool. 271da177e4SLinus Torvalds */ 281da177e4SLinus Torvalds 291da177e4SLinus Torvalds #include <linux/module.h> /* Modules */ 301da177e4SLinus Torvalds #include <linux/init.h> /* Initdata */ 31fb911ee8SPeter Osterlund #include <linux/ioport.h> /* request_region */ 322400982aSGeert Uytterhoeven #include <linux/delay.h> /* msleep */ 3346ff2c72SMauro Carvalho Chehab #include <linux/videodev2.h> /* kernel radio structs */ 34151c3f82SHans Verkuil #include <linux/io.h> /* outb, outb_p */ 359f1dfccfSHans Verkuil #include <linux/slab.h> 36151c3f82SHans Verkuil #include <media/v4l2-device.h> 3735ea11ffSHans Verkuil #include <media/v4l2-ioctl.h> 38cc3c6df1SHans Verkuil #include <media/v4l2-ctrls.h> 39cc3c6df1SHans Verkuil #include "radio-isa.h" 4039cca6b8SOndrej Zary #include "lm7000.h" 411da177e4SLinus Torvalds 42151c3f82SHans Verkuil MODULE_AUTHOR("M. Kirkwood"); 43151c3f82SHans Verkuil MODULE_DESCRIPTION("A driver for the RadioTrack/RadioReveal radio card."); 44151c3f82SHans Verkuil MODULE_LICENSE("GPL"); 45cc3c6df1SHans Verkuil MODULE_VERSION("1.0.0"); 4646ff2c72SMauro Carvalho Chehab 471da177e4SLinus Torvalds #ifndef CONFIG_RADIO_RTRACK_PORT 481da177e4SLinus Torvalds #define CONFIG_RADIO_RTRACK_PORT -1 491da177e4SLinus Torvalds #endif 501da177e4SLinus Torvalds 51cc3c6df1SHans Verkuil #define RTRACK_MAX 2 521da177e4SLinus Torvalds 53cc3c6df1SHans Verkuil static int io[RTRACK_MAX] = { [0] = CONFIG_RADIO_RTRACK_PORT, 54cc3c6df1SHans Verkuil [1 ... (RTRACK_MAX - 1)] = -1 }; 55cc3c6df1SHans Verkuil static int radio_nr[RTRACK_MAX] = { [0 ... (RTRACK_MAX - 1)] = -1 }; 56151c3f82SHans Verkuil 57cc3c6df1SHans Verkuil module_param_array(io, int, NULL, 0444); 58cc3c6df1SHans Verkuil MODULE_PARM_DESC(io, "I/O addresses of the RadioTrack card (0x20f or 0x30f)"); 59cc3c6df1SHans Verkuil module_param_array(radio_nr, int, NULL, 0444); 60cc3c6df1SHans Verkuil MODULE_PARM_DESC(radio_nr, "Radio device numbers"); 61cc3c6df1SHans Verkuil 62cc3c6df1SHans Verkuil struct rtrack { 63cc3c6df1SHans Verkuil struct radio_isa_card isa; 641da177e4SLinus Torvalds int curvol; 651da177e4SLinus Torvalds }; 661da177e4SLinus Torvalds 67cc3c6df1SHans Verkuil static struct radio_isa_card *rtrack_alloc(void) 681da177e4SLinus Torvalds { 69cc3c6df1SHans Verkuil struct rtrack *rt = kzalloc(sizeof(struct rtrack), GFP_KERNEL); 70cc3c6df1SHans Verkuil 718f7fa3c8SMauro Carvalho Chehab if (rt) 72cc3c6df1SHans Verkuil rt->curvol = 0xff; 73cc3c6df1SHans Verkuil return rt ? &rt->isa : NULL; 741da177e4SLinus Torvalds } 751da177e4SLinus Torvalds 7639cca6b8SOndrej Zary #define AIMS_BIT_TUN_CE (1 << 0) 7739cca6b8SOndrej Zary #define AIMS_BIT_TUN_CLK (1 << 1) 7839cca6b8SOndrej Zary #define AIMS_BIT_TUN_DATA (1 << 2) 7939cca6b8SOndrej Zary #define AIMS_BIT_VOL_CE (1 << 3) 8039cca6b8SOndrej Zary #define AIMS_BIT_TUN_STRQ (1 << 4) 8139cca6b8SOndrej Zary /* bit 5 is not connected */ 8239cca6b8SOndrej Zary #define AIMS_BIT_VOL_UP (1 << 6) /* active low */ 8339cca6b8SOndrej Zary #define AIMS_BIT_VOL_DN (1 << 7) /* active low */ 848f7fa3c8SMauro Carvalho Chehab 85f6d15e09SMauro Carvalho Chehab static void rtrack_set_pins(void *handle, u8 pins) 868f7fa3c8SMauro Carvalho Chehab { 8739cca6b8SOndrej Zary struct radio_isa_card *isa = handle; 8839cca6b8SOndrej Zary struct rtrack *rt = container_of(isa, struct rtrack, isa); 8939cca6b8SOndrej Zary u8 bits = AIMS_BIT_VOL_DN | AIMS_BIT_VOL_UP | AIMS_BIT_TUN_STRQ; 908f7fa3c8SMauro Carvalho Chehab 9139cca6b8SOndrej Zary if (!v4l2_ctrl_g_ctrl(rt->isa.mute)) 9239cca6b8SOndrej Zary bits |= AIMS_BIT_VOL_CE; 9339cca6b8SOndrej Zary 9439cca6b8SOndrej Zary if (pins & LM7000_DATA) 9539cca6b8SOndrej Zary bits |= AIMS_BIT_TUN_DATA; 9639cca6b8SOndrej Zary if (pins & LM7000_CLK) 9739cca6b8SOndrej Zary bits |= AIMS_BIT_TUN_CLK; 9839cca6b8SOndrej Zary if (pins & LM7000_CE) 9939cca6b8SOndrej Zary bits |= AIMS_BIT_TUN_CE; 10039cca6b8SOndrej Zary 10139cca6b8SOndrej Zary outb_p(bits, rt->isa.io); 1028f7fa3c8SMauro Carvalho Chehab } 1038f7fa3c8SMauro Carvalho Chehab 104cc3c6df1SHans Verkuil static int rtrack_s_frequency(struct radio_isa_card *isa, u32 freq) 1051da177e4SLinus Torvalds { 10639cca6b8SOndrej Zary lm7000_set_freq(freq, isa, rtrack_set_pins); 1071da177e4SLinus Torvalds 1081da177e4SLinus Torvalds return 0; 1091da177e4SLinus Torvalds } 1101da177e4SLinus Torvalds 111cc3c6df1SHans Verkuil static u32 rtrack_g_signal(struct radio_isa_card *isa) 1121da177e4SLinus Torvalds { 113cc3c6df1SHans Verkuil /* bit set = no signal present */ 114cc3c6df1SHans Verkuil return 0xffff * !(inb(isa->io) & 2); 11546ff2c72SMauro Carvalho Chehab } 11646ff2c72SMauro Carvalho Chehab 117cc3c6df1SHans Verkuil static int rtrack_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol) 1181da177e4SLinus Torvalds { 119cc3c6df1SHans Verkuil struct rtrack *rt = container_of(isa, struct rtrack, isa); 120cc3c6df1SHans Verkuil int curvol = rt->curvol; 121cc3c6df1SHans Verkuil 122cc3c6df1SHans Verkuil if (mute) { 123cc3c6df1SHans Verkuil outb(0xd0, isa->io); /* volume steady + sigstr + off */ 124cc3c6df1SHans Verkuil return 0; 125cc3c6df1SHans Verkuil } 126cc3c6df1SHans Verkuil if (vol == 0) { /* volume = 0 means mute the card */ 127cc3c6df1SHans Verkuil outb(0x48, isa->io); /* volume down but still "on" */ 128cc3c6df1SHans Verkuil msleep(curvol * 3); /* make sure it's totally down */ 129cc3c6df1SHans Verkuil } else if (curvol < vol) { 130cc3c6df1SHans Verkuil outb(0x98, isa->io); /* volume up + sigstr + on */ 131cc3c6df1SHans Verkuil for (; curvol < vol; curvol++) 132cc287f7cSArnd Bergmann mdelay(3); 133cc3c6df1SHans Verkuil } else if (curvol > vol) { 134cc3c6df1SHans Verkuil outb(0x58, isa->io); /* volume down + sigstr + on */ 135cc3c6df1SHans Verkuil for (; curvol > vol; curvol--) 136cc287f7cSArnd Bergmann mdelay(3); 137cc3c6df1SHans Verkuil } 138cc3c6df1SHans Verkuil outb(0xd8, isa->io); /* volume steady + sigstr + on */ 139cc3c6df1SHans Verkuil rt->curvol = vol; 1401da177e4SLinus Torvalds return 0; 1411da177e4SLinus Torvalds } 142385e8d8fSDouglas Landgraf 143cc3c6df1SHans Verkuil /* Mute card - prevents noisy bootups */ 144cc3c6df1SHans Verkuil static int rtrack_initialize(struct radio_isa_card *isa) 1451da177e4SLinus Torvalds { 146cc3c6df1SHans Verkuil /* this ensures that the volume is all the way up */ 147cc3c6df1SHans Verkuil outb(0x90, isa->io); /* volume up but still "on" */ 148cc3c6df1SHans Verkuil msleep(3000); /* make sure it's totally up */ 149cc3c6df1SHans Verkuil outb(0xc0, isa->io); /* steady volume, mute card */ 1501da177e4SLinus Torvalds return 0; 1511da177e4SLinus Torvalds } 15246ff2c72SMauro Carvalho Chehab 153cc3c6df1SHans Verkuil static const struct radio_isa_ops rtrack_ops = { 154cc3c6df1SHans Verkuil .alloc = rtrack_alloc, 155cc3c6df1SHans Verkuil .init = rtrack_initialize, 156cc3c6df1SHans Verkuil .s_mute_volume = rtrack_s_mute_volume, 157cc3c6df1SHans Verkuil .s_frequency = rtrack_s_frequency, 158cc3c6df1SHans Verkuil .g_signal = rtrack_g_signal, 1591da177e4SLinus Torvalds }; 1601da177e4SLinus Torvalds 161cc3c6df1SHans Verkuil static const int rtrack_ioports[] = { 0x20f, 0x30f }; 162cc3c6df1SHans Verkuil 163cc3c6df1SHans Verkuil static struct radio_isa_driver rtrack_driver = { 164cc3c6df1SHans Verkuil .driver = { 165cc3c6df1SHans Verkuil .match = radio_isa_match, 166cc3c6df1SHans Verkuil .probe = radio_isa_probe, 167cc3c6df1SHans Verkuil .remove = radio_isa_remove, 168cc3c6df1SHans Verkuil .driver = { 169cc3c6df1SHans Verkuil .name = "radio-aimslab", 170cc3c6df1SHans Verkuil }, 171cc3c6df1SHans Verkuil }, 172cc3c6df1SHans Verkuil .io_params = io, 173cc3c6df1SHans Verkuil .radio_nr_params = radio_nr, 174cc3c6df1SHans Verkuil .io_ports = rtrack_ioports, 175cc3c6df1SHans Verkuil .num_of_io_ports = ARRAY_SIZE(rtrack_ioports), 176cc3c6df1SHans Verkuil .region_size = 2, 177cc3c6df1SHans Verkuil .card = "AIMSlab RadioTrack/RadioReveal", 178cc3c6df1SHans Verkuil .ops = &rtrack_ops, 179cc3c6df1SHans Verkuil .has_stereo = true, 180cc3c6df1SHans Verkuil .max_volume = 0xff, 1811da177e4SLinus Torvalds }; 1821da177e4SLinus Torvalds 1831da177e4SLinus Torvalds static int __init rtrack_init(void) 1841da177e4SLinus Torvalds { 185cc3c6df1SHans Verkuil return isa_register_driver(&rtrack_driver.driver, RTRACK_MAX); 1861da177e4SLinus Torvalds } 1871da177e4SLinus Torvalds 188151c3f82SHans Verkuil static void __exit rtrack_exit(void) 1891da177e4SLinus Torvalds { 190cc3c6df1SHans Verkuil isa_unregister_driver(&rtrack_driver.driver); 1911da177e4SLinus Torvalds } 1921da177e4SLinus Torvalds 1931da177e4SLinus Torvalds module_init(rtrack_init); 194151c3f82SHans Verkuil module_exit(rtrack_exit); 195