18bd7ef5aSHans Verkuil /* 28bd7ef5aSHans Verkuil * RadioTrack II driver 38bd7ef5aSHans Verkuil * Copyright 1998 Ben Pfaff 41da177e4SLinus Torvalds * 51da177e4SLinus Torvalds * Based on RadioTrack I/RadioReveal (C) 1997 M. Kirkwood 6d9b01449SAlan Cox * Converted to new API by Alan Cox <alan@lxorguk.ukuu.org.uk> 71da177e4SLinus Torvalds * Various bugfixes and enhancements by Russell Kroll <rkroll@exploits.org> 81da177e4SLinus Torvalds * 98bd7ef5aSHans Verkuil * Converted to the radio-isa framework by Hans Verkuil <hans.verkuil@cisco.com> 1032590819SMauro Carvalho Chehab * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@kernel.org> 114ca28661SHans Verkuil * 124ca28661SHans Verkuil * Fully tested with actual hardware and the v4l2-compliance tool. 131da177e4SLinus Torvalds */ 141da177e4SLinus Torvalds 151da177e4SLinus Torvalds #include <linux/module.h> /* Modules */ 161da177e4SLinus Torvalds #include <linux/init.h> /* Initdata */ 17fb911ee8SPeter Osterlund #include <linux/ioport.h> /* request_region */ 181da177e4SLinus Torvalds #include <linux/delay.h> /* udelay */ 19f8c559f8SMauro Carvalho Chehab #include <linux/videodev2.h> /* kernel radio structs */ 20922c78e9SHans Verkuil #include <linux/mutex.h> 21922c78e9SHans Verkuil #include <linux/io.h> /* outb, outb_p */ 22a875431dSHans Verkuil #include <linux/slab.h> 23922c78e9SHans Verkuil #include <media/v4l2-device.h> 24922c78e9SHans Verkuil #include <media/v4l2-ioctl.h> 258bd7ef5aSHans Verkuil #include "radio-isa.h" 26f8c559f8SMauro Carvalho Chehab 27922c78e9SHans Verkuil MODULE_AUTHOR("Ben Pfaff"); 28922c78e9SHans Verkuil MODULE_DESCRIPTION("A driver for the RadioTrack II radio card."); 29922c78e9SHans Verkuil MODULE_LICENSE("GPL"); 308bd7ef5aSHans Verkuil MODULE_VERSION("0.1.99"); 31f8c559f8SMauro Carvalho Chehab 321da177e4SLinus Torvalds #ifndef CONFIG_RADIO_RTRACK2_PORT 331da177e4SLinus Torvalds #define CONFIG_RADIO_RTRACK2_PORT -1 341da177e4SLinus Torvalds #endif 351da177e4SLinus Torvalds 368bd7ef5aSHans Verkuil #define RTRACK2_MAX 2 371da177e4SLinus Torvalds 388bd7ef5aSHans Verkuil static int io[RTRACK2_MAX] = { [0] = CONFIG_RADIO_RTRACK2_PORT, 398bd7ef5aSHans Verkuil [1 ... (RTRACK2_MAX - 1)] = -1 }; 408bd7ef5aSHans Verkuil static int radio_nr[RTRACK2_MAX] = { [0 ... (RTRACK2_MAX - 1)] = -1 }; 41922c78e9SHans Verkuil 428bd7ef5aSHans Verkuil module_param_array(io, int, NULL, 0444); 438bd7ef5aSHans Verkuil MODULE_PARM_DESC(io, "I/O addresses of the RadioTrack card (0x20f or 0x30f)"); 448bd7ef5aSHans Verkuil module_param_array(radio_nr, int, NULL, 0444); 458bd7ef5aSHans Verkuil MODULE_PARM_DESC(radio_nr, "Radio device numbers"); 468bd7ef5aSHans Verkuil 478bd7ef5aSHans Verkuil static struct radio_isa_card *rtrack2_alloc(void) 481da177e4SLinus Torvalds { 498bd7ef5aSHans Verkuil return kzalloc(sizeof(struct radio_isa_card), GFP_KERNEL); 501da177e4SLinus Torvalds } 511da177e4SLinus Torvalds 528bd7ef5aSHans Verkuil static void zero(struct radio_isa_card *isa) 531da177e4SLinus Torvalds { 548bd7ef5aSHans Verkuil outb_p(1, isa->io); 558bd7ef5aSHans Verkuil outb_p(3, isa->io); 568bd7ef5aSHans Verkuil outb_p(1, isa->io); 571da177e4SLinus Torvalds } 581da177e4SLinus Torvalds 598bd7ef5aSHans Verkuil static void one(struct radio_isa_card *isa) 601da177e4SLinus Torvalds { 618bd7ef5aSHans Verkuil outb_p(5, isa->io); 628bd7ef5aSHans Verkuil outb_p(7, isa->io); 638bd7ef5aSHans Verkuil outb_p(5, isa->io); 641da177e4SLinus Torvalds } 651da177e4SLinus Torvalds 668bd7ef5aSHans Verkuil static int rtrack2_s_frequency(struct radio_isa_card *isa, u32 freq) 671da177e4SLinus Torvalds { 681da177e4SLinus Torvalds int i; 691da177e4SLinus Torvalds 701da177e4SLinus Torvalds freq = freq / 200 + 856; 711da177e4SLinus Torvalds 728bd7ef5aSHans Verkuil outb_p(0xc8, isa->io); 738bd7ef5aSHans Verkuil outb_p(0xc9, isa->io); 748bd7ef5aSHans Verkuil outb_p(0xc9, isa->io); 751da177e4SLinus Torvalds 761da177e4SLinus Torvalds for (i = 0; i < 10; i++) 778bd7ef5aSHans Verkuil zero(isa); 781da177e4SLinus Torvalds 791da177e4SLinus Torvalds for (i = 14; i >= 0; i--) 801da177e4SLinus Torvalds if (freq & (1 << i)) 818bd7ef5aSHans Verkuil one(isa); 821da177e4SLinus Torvalds else 838bd7ef5aSHans Verkuil zero(isa); 841da177e4SLinus Torvalds 858bd7ef5aSHans Verkuil outb_p(0xc8, isa->io); 864ca28661SHans Verkuil outb_p(v4l2_ctrl_g_ctrl(isa->mute), isa->io); 871da177e4SLinus Torvalds return 0; 881da177e4SLinus Torvalds } 891da177e4SLinus Torvalds 908bd7ef5aSHans Verkuil static u32 rtrack2_g_signal(struct radio_isa_card *isa) 9125f30389SDouglas Landgraf { 928bd7ef5aSHans Verkuil /* bit set = no signal present */ 938bd7ef5aSHans Verkuil return (inb(isa->io) & 2) ? 0 : 0xffff; 948bd7ef5aSHans Verkuil } 958bd7ef5aSHans Verkuil 968bd7ef5aSHans Verkuil static int rtrack2_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol) 978bd7ef5aSHans Verkuil { 988bd7ef5aSHans Verkuil outb(mute, isa->io); 9925f30389SDouglas Landgraf return 0; 10025f30389SDouglas Landgraf } 10125f30389SDouglas Landgraf 1028bd7ef5aSHans Verkuil static const struct radio_isa_ops rtrack2_ops = { 1038bd7ef5aSHans Verkuil .alloc = rtrack2_alloc, 1048bd7ef5aSHans Verkuil .s_mute_volume = rtrack2_s_mute_volume, 1058bd7ef5aSHans Verkuil .s_frequency = rtrack2_s_frequency, 1068bd7ef5aSHans Verkuil .g_signal = rtrack2_g_signal, 1071da177e4SLinus Torvalds }; 1081da177e4SLinus Torvalds 1098bd7ef5aSHans Verkuil static const int rtrack2_ioports[] = { 0x20f, 0x30f }; 1108bd7ef5aSHans Verkuil 1118bd7ef5aSHans Verkuil static struct radio_isa_driver rtrack2_driver = { 1128bd7ef5aSHans Verkuil .driver = { 1138bd7ef5aSHans Verkuil .match = radio_isa_match, 1148bd7ef5aSHans Verkuil .probe = radio_isa_probe, 1158bd7ef5aSHans Verkuil .remove = radio_isa_remove, 1168bd7ef5aSHans Verkuil .driver = { 1178bd7ef5aSHans Verkuil .name = "radio-rtrack2", 1188bd7ef5aSHans Verkuil }, 1198bd7ef5aSHans Verkuil }, 1208bd7ef5aSHans Verkuil .io_params = io, 1218bd7ef5aSHans Verkuil .radio_nr_params = radio_nr, 1228bd7ef5aSHans Verkuil .io_ports = rtrack2_ioports, 1238bd7ef5aSHans Verkuil .num_of_io_ports = ARRAY_SIZE(rtrack2_ioports), 1248bd7ef5aSHans Verkuil .region_size = 4, 1258bd7ef5aSHans Verkuil .card = "AIMSlab RadioTrack II", 1268bd7ef5aSHans Verkuil .ops = &rtrack2_ops, 1278bd7ef5aSHans Verkuil .has_stereo = true, 1281da177e4SLinus Torvalds }; 1291da177e4SLinus Torvalds 1301da177e4SLinus Torvalds static int __init rtrack2_init(void) 1311da177e4SLinus Torvalds { 1328bd7ef5aSHans Verkuil return isa_register_driver(&rtrack2_driver.driver, RTRACK2_MAX); 1331da177e4SLinus Torvalds } 1341da177e4SLinus Torvalds 135922c78e9SHans Verkuil static void __exit rtrack2_exit(void) 1361da177e4SLinus Torvalds { 1378bd7ef5aSHans Verkuil isa_unregister_driver(&rtrack2_driver.driver); 1381da177e4SLinus Torvalds } 1391da177e4SLinus Torvalds 1401da177e4SLinus Torvalds module_init(rtrack2_init); 141922c78e9SHans Verkuil module_exit(rtrack2_exit); 142