Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/pci/gtp.c
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1 /* $NetBSD: gtp.c,v 1.6 2003/07/14 15:47:24 lukem Exp $ */ 2 /* $OpenBSD: gtp.c,v 1.1 2002/06/03 16:13:21 mickey Exp $ */ 3 4 /* 5 * Copyright (c) 2002 Vladimir Popov <jumbo@narod.ru> 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 /* Gemtek PCI Radio Card Device Driver */ 30 31 #include <sys/cdefs.h> 32 __KERNEL_RCSID(0, "$NetBSD: gtp.c,v 1.6 2003/07/14 15:47:24 lukem Exp $"); 33 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/device.h> 37 #include <sys/errno.h> 38 #include <sys/ioctl.h> 39 #include <sys/proc.h> 40 #include <sys/radioio.h> 41 42 #include <machine/bus.h> 43 44 #include <dev/pci/pcireg.h> 45 #include <dev/pci/pcivar.h> 46 #include <dev/pci/pcidevs.h> 47 48 #include <dev/ic/tea5757.h> 49 #include <dev/radio_if.h> 50 51 #define PCI_CBIO 0x10 52 53 int gtp_match(struct device *, struct cfdata *, void *); 54 void gtp_attach(struct device *, struct device *, void *); 55 56 int gtp_get_info(void *, struct radio_info *); 57 int gtp_set_info(void *, struct radio_info *); 58 int gtp_search(void *, int); 59 60 #define GEMTEK_PCI_CAPS RADIO_CAPS_DETECT_SIGNAL | \ 61 RADIO_CAPS_DETECT_STEREO | \ 62 RADIO_CAPS_SET_MONO | \ 63 RADIO_CAPS_HW_SEARCH | \ 64 RADIO_CAPS_HW_AFC | \ 65 RADIO_CAPS_LOCK_SENSITIVITY 66 67 #define GEMTEK_PCI_MUTE 0x00 68 #define GEMTEK_PCI_RSET 0x10 69 70 #define GEMTEK_PCI_SIGNAL 0x08 71 #define GEMTEK_PCI_STEREO 0x08 72 73 #define GTP_WREN_ON (1 << 2) 74 #define GTP_WREN_OFF (0 << 2) 75 76 #define GTP_DATA_ON (1 << 1) 77 #define GTP_DATA_OFF (0 << 1) 78 79 #define GTP_CLCK_ON (1 << 0) 80 #define GTP_CLCK_OFF (0 << 0) 81 82 #define GTP_READ_CLOCK_LOW (GTP_WREN_OFF | GTP_DATA_ON | GTP_CLCK_OFF) 83 #define GTP_READ_CLOCK_HIGH (GTP_WREN_OFF | GTP_DATA_ON | GTP_CLCK_ON) 84 85 /* define our interface to the high-level radio driver */ 86 87 struct radio_hw_if gtp_hw_if = { 88 NULL, /* open */ 89 NULL, /* close */ 90 gtp_get_info, 91 gtp_set_info, 92 gtp_search 93 }; 94 95 struct gtp_softc { 96 struct device sc_dev; 97 98 int mute; 99 u_int8_t vol; 100 u_int32_t freq; 101 u_int32_t stereo; 102 u_int32_t lock; 103 104 struct tea5757_t tea; 105 }; 106 107 CFATTACH_DECL(gtp, sizeof(struct gtp_softc), 108 gtp_match, gtp_attach, NULL, NULL); 109 110 void gtp_set_mute(struct gtp_softc *); 111 void gtp_write_bit(bus_space_tag_t, bus_space_handle_t, bus_size_t, int); 112 void gtp_init(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t); 113 void gtp_rset(bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t); 114 int gtp_state(bus_space_tag_t, bus_space_handle_t); 115 u_int32_t gtp_hardware_read(bus_space_tag_t, bus_space_handle_t, 116 bus_size_t); 117 118 int 119 gtp_match(struct device *parent, struct cfdata *cf, void *aux) 120 { 121 struct pci_attach_args *pa = aux; 122 /* FIXME: 123 * Guillemot produces the card that 124 * was originally developed by Gemtek 125 */ 126 #if 0 127 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_GEMTEK && 128 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_GEMTEK_PR103) 129 return (1); 130 #else 131 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_GUILLEMOT && 132 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_GUILLEMOT_MAXIRADIO) 133 return (1); 134 #endif 135 return (0); 136 } 137 138 void 139 gtp_attach(struct device *parent, struct device *self, void *aux) 140 { 141 struct gtp_softc *sc = (struct gtp_softc *) self; 142 struct pci_attach_args *pa = aux; 143 struct cfdata *cf = sc->sc_dev.dv_cfdata; 144 pci_chipset_tag_t pc = pa->pa_pc; 145 bus_size_t iosize; 146 pcireg_t csr; 147 char devinfo[256]; 148 149 aprint_naive(": Radio controller\n"); 150 151 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 152 aprint_normal(": %s (rev. 0x%02x)\n", devinfo, 153 PCI_REVISION(pa->pa_class)); 154 155 /* Map I/O registers */ 156 if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0, &sc->tea.iot, 157 &sc->tea.ioh, NULL, &iosize)) { 158 aprint_error(": can't map i/o space\n"); 159 return; 160 } 161 162 /* Enable the card */ 163 csr = pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 164 pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 165 csr | PCI_COMMAND_MASTER_ENABLE); 166 167 sc->vol = 0; 168 sc->mute = 0; 169 sc->freq = MIN_FM_FREQ; 170 sc->stereo = TEA5757_STEREO; 171 sc->lock = TEA5757_S030; 172 sc->tea.offset = 0; 173 sc->tea.flags = cf->cf_flags; 174 sc->tea.init = gtp_init; 175 sc->tea.rset = gtp_rset; 176 sc->tea.write_bit = gtp_write_bit; 177 sc->tea.read = gtp_hardware_read; 178 179 aprint_normal(": Gemtek PR103\n"); 180 181 radio_attach_mi(>p_hw_if, sc, &sc->sc_dev); 182 } 183 184 int 185 gtp_get_info(void *v, struct radio_info *ri) 186 { 187 struct gtp_softc *sc = v; 188 189 ri->mute = sc->mute; 190 ri->volume = sc->vol ? 255 : 0; 191 ri->stereo = sc->stereo == TEA5757_STEREO ? 1 : 0; 192 ri->caps = GEMTEK_PCI_CAPS; 193 ri->rfreq = 0; 194 ri->lock = tea5757_decode_lock(sc->lock); 195 196 /* Frequency read unsupported */ 197 ri->freq = sc->freq; 198 199 ri->info = gtp_state(sc->tea.iot, sc->tea.ioh); 200 gtp_set_mute(sc); 201 202 return (0); 203 } 204 205 int 206 gtp_set_info(void *v, struct radio_info *ri) 207 { 208 struct gtp_softc *sc = v; 209 210 sc->mute = ri->mute ? 1 : 0; 211 sc->vol = ri->volume ? 255 : 0; 212 sc->stereo = ri->stereo ? TEA5757_STEREO: TEA5757_MONO; 213 sc->lock = tea5757_encode_lock(ri->lock); 214 ri->freq = sc->freq = tea5757_set_freq(&sc->tea, 215 sc->lock, sc->stereo, ri->freq); 216 gtp_set_mute(sc); 217 218 return (0); 219 } 220 221 int 222 gtp_search(void *v, int f) 223 { 224 struct gtp_softc *sc = v; 225 226 tea5757_search(&sc->tea, sc->lock, sc->stereo, f); 227 gtp_set_mute(sc); 228 229 return (0); 230 } 231 232 void 233 gtp_set_mute(struct gtp_softc *sc) 234 { 235 if (sc->mute || !sc->vol) 236 bus_space_write_2(sc->tea.iot, sc->tea.ioh, 0, GEMTEK_PCI_MUTE); 237 else 238 sc->freq = tea5757_set_freq(&sc->tea, 239 sc->lock, sc->stereo, sc->freq); 240 } 241 242 void 243 gtp_write_bit(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, 244 int bit) 245 { 246 u_int8_t data; 247 248 data = bit ? GTP_DATA_ON : GTP_DATA_OFF; 249 bus_space_write_1(iot, ioh, off, GTP_WREN_ON | GTP_CLCK_OFF | data); 250 bus_space_write_1(iot, ioh, off, GTP_WREN_ON | GTP_CLCK_ON | data); 251 bus_space_write_1(iot, ioh, off, GTP_WREN_ON | GTP_CLCK_OFF | data); 252 } 253 254 void 255 gtp_init(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, u_int32_t d) 256 { 257 bus_space_write_1(iot, ioh, off, GTP_WREN_ON | GTP_DATA_ON | GTP_CLCK_OFF); 258 } 259 260 void 261 gtp_rset(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off, u_int32_t d) 262 { 263 bus_space_write_1(iot, ioh, off, GEMTEK_PCI_RSET); 264 } 265 266 u_int32_t 267 gtp_hardware_read(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off) 268 { 269 /* UNSUPPORTED */ 270 return 0; 271 } 272 273 int 274 gtp_state(bus_space_tag_t iot, bus_space_handle_t ioh) 275 { 276 int ret; 277 278 bus_space_write_2(iot, ioh, 0, 279 GTP_DATA_ON | GTP_WREN_OFF | GTP_CLCK_OFF); 280 ret = bus_space_read_2(iot, ioh, 0) & 281 GEMTEK_PCI_STEREO? 0 : RADIO_INFO_STEREO; 282 bus_space_write_2(iot, ioh, 0, 283 GTP_DATA_ON | GTP_WREN_OFF | GTP_CLCK_ON); 284 ret |= bus_space_read_2(iot, ioh, 0) & 285 GEMTEK_PCI_SIGNAL? 0 : RADIO_INFO_SIGNAL; 286 287 return ret; 288 }
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