// SPDX-License-Identifier: GPL-2.0-only /* * GemTek radio card driver * * Copyright 1998 Jonas Munsin <[email protected]> * * GemTek hasn't released any specs on the card, so the protocol had to * be reverse engineered with dosemu. * * Besides the protocol changes, this is mostly a copy of: * * RadioTrack II driver for Linux radio support (C) 1998 Ben Pfaff * * Based on RadioTrack I/RadioReveal (C) 1997 M. Kirkwood * Converted to new API by Alan Cox <[email protected]> * Various bugfixes and enhancements by Russell Kroll <[email protected]> * * Converted to the radio-isa framework by Hans Verkuil <[email protected]> * Converted to V4L2 API by Mauro Carvalho Chehab <[email protected]> * * Note: this card seems to swap the left and right audio channels! * * Fully tested with the Keene USB FM Transmitter and the v4l2-compliance tool. */ #include <linux/module.h> /* Modules */ #include <linux/init.h> /* Initdata */ #include <linux/ioport.h> /* request_region */ #include <linux/delay.h> /* udelay */ #include <linux/videodev2.h> /* kernel radio structs */ #include <linux/mutex.h> #include <linux/io.h> /* outb, outb_p */ #include <linux/pnp.h> #include <linux/slab.h> #include <media/v4l2-ioctl.h> #include <media/v4l2-device.h> #include "radio-isa.h" /* * Module info. */ MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; MODULE_VERSION(…) …; /* * Module params. */ #ifndef CONFIG_RADIO_GEMTEK_PORT #define CONFIG_RADIO_GEMTEK_PORT … #endif #ifndef CONFIG_RADIO_GEMTEK_PROBE #define CONFIG_RADIO_GEMTEK_PROBE … #endif #define GEMTEK_MAX … static bool probe = …; static bool hardmute; static int io[GEMTEK_MAX] = …; static int radio_nr[GEMTEK_MAX] = …; module_param(probe, bool, 0444); MODULE_PARM_DESC(…) …; module_param(hardmute, bool, 0644); MODULE_PARM_DESC(…) …; module_param_array(…); MODULE_PARM_DESC(…) …; module_param_array(…); MODULE_PARM_DESC(…) …; /* * Frequency calculation constants. Intermediate frequency 10.52 MHz (nominal * value 10.7 MHz), reference divisor 6.39 kHz (nominal 6.25 kHz). */ #define FSCALE … #define IF_OFFSET … #define REF_FREQ … #define GEMTEK_CK … #define GEMTEK_DA … #define GEMTEK_CE … #define GEMTEK_NS … #define GEMTEK_MT … #define GEMTEK_STDF_3_125_KHZ … #define GEMTEK_PLL_OFF … #define BU2614_BUS_SIZE … #define SHORT_DELAY … #define LONG_DELAY … struct gemtek { … }; #define BU2614_FREQ_BITS … #define BU2614_PORT_BITS … #define BU2614_VOID_BITS … #define BU2614_FMES_BITS … #define BU2614_STDF_BITS … #define BU2614_SWIN_BITS … #define BU2614_SWAL_BITS … #define BU2614_VOID2_BITS … #define BU2614_FMUN_BITS … #define BU2614_TEST_BITS … #define BU2614_FREQ_SHIFT … #define BU2614_PORT_SHIFT … #define BU2614_VOID_SHIFT … #define BU2614_FMES_SHIFT … #define BU2614_STDF_SHIFT … #define BU2614_SWIN_SHIFT … #define BU2614_SWAL_SHIFT … #define BU2614_VOID2_SHIFT … #define BU2614_FMUN_SHIFT … #define BU2614_TEST_SHIFT … #define MKMASK(field) … #define BU2614_PORT_MASK … #define BU2614_FREQ_MASK … #define BU2614_VOID_MASK … #define BU2614_FMES_MASK … #define BU2614_STDF_MASK … #define BU2614_SWIN_MASK … #define BU2614_SWAL_MASK … #define BU2614_VOID2_MASK … #define BU2614_FMUN_MASK … #define BU2614_TEST_MASK … /* * Set data which will be sent to BU2614FS. */ #define gemtek_bu2614_set(dev, field, data) … /* * Transmit settings to BU2614FS over GemTek IC. */ static void gemtek_bu2614_transmit(struct gemtek *gt) { … } /* * Calculate divisor from FM-frequency for BU2614FS (3.125 KHz STDF expected). */ static unsigned long gemtek_convfreq(unsigned long freq) { … } static struct radio_isa_card *gemtek_alloc(void) { … } /* * Set FM-frequency. */ static int gemtek_s_frequency(struct radio_isa_card *isa, u32 freq) { … } /* * Set mute flag. */ static int gemtek_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol) { … } static u32 gemtek_g_rxsubchans(struct radio_isa_card *isa) { … } /* * Check if requested card acts like GemTek Radio card. */ static bool gemtek_probe(struct radio_isa_card *isa, int io) { … } static const struct radio_isa_ops gemtek_ops = …; static const int gemtek_ioports[] = …; #ifdef CONFIG_PNP static const struct pnp_device_id gemtek_pnp_devices[] = …; MODULE_DEVICE_TABLE(pnp, gemtek_pnp_devices); #endif static struct radio_isa_driver gemtek_driver = …; static int __init gemtek_init(void) { … } static void __exit gemtek_exit(void) { … } module_init(…) …; module_exit(gemtek_exit);
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