/* * Support for the Broadcom BCM3510 ATSC demodulator (1st generation Air2PC) * * Copyright (C) 2001-5, B2C2 inc. * * GPL/Linux driver written by Patrick Boettcher <[email protected]> * * This driver is "hard-coded" to be used with the 1st generation of * Technisat/B2C2's Air2PC ATSC PCI/USB cards/boxes. The pll-programming * (Panasonic CT10S) is located here, which is actually wrong. Unless there is * another device with a BCM3510, this is no problem. * * The driver works also with QAM64 DVB-C, but had an unreasonable high * UNC. (Tested with the Air2PC ATSC 1st generation) * * You'll need a firmware for this driver in order to get it running. It is * called "dvb-fe-bcm3510-01.fw". * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free * Software Foundation; either version 2 of the License, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * * You should have received a copy of the GNU General Public License along with * this program; if not, write to the Free Software Foundation, Inc., 675 Mass * Ave, Cambridge, MA 02139, USA. */ #include <linux/init.h> #include <linux/module.h> #include <linux/device.h> #include <linux/firmware.h> #include <linux/jiffies.h> #include <linux/string.h> #include <linux/slab.h> #include <linux/mutex.h> #include <media/dvb_frontend.h> #include "bcm3510.h" #include "bcm3510_priv.h" /* Max transfer size done by bcm3510_do_hab_cmd() function */ #define MAX_XFER_SIZE … struct bcm3510_state { … }; static int debug; module_param(debug, int, 0644); MODULE_PARM_DESC(…) …; #define dprintk(level,x...) … #define dbufout(b,l,m) … #define deb_info(args...) … #define deb_i2c(args...) … #define deb_hab(args...) … /* transfer functions */ static int bcm3510_writebytes (struct bcm3510_state *state, u8 reg, u8 *buf, u8 len) { … } static int bcm3510_readbytes (struct bcm3510_state *state, u8 reg, u8 *buf, u8 len) { … } static int bcm3510_writeB(struct bcm3510_state *state, u8 reg, bcm3510_register_value v) { … } static int bcm3510_readB(struct bcm3510_state *state, u8 reg, bcm3510_register_value *v) { … } /* Host Access Buffer transfers */ static int bcm3510_hab_get_response(struct bcm3510_state *st, u8 *buf, int len) { … } static int bcm3510_hab_send_request(struct bcm3510_state *st, u8 *buf, int len) { … } static int bcm3510_do_hab_cmd(struct bcm3510_state *st, u8 cmd, u8 msgid, u8 *obuf, u8 olen, u8 *ibuf, u8 ilen) { … } #if 0 /* not needed, we use a semaphore to prevent HAB races */ static int bcm3510_is_ap_ready(struct bcm3510_state *st) { bcm3510_register_value ap,hab; int ret; if ((ret = bcm3510_readB(st,0xa8,&hab)) < 0 || (ret = bcm3510_readB(st,0xa2,&ap) < 0)) return ret; if (ap.APSTAT1_a2.RESET || ap.APSTAT1_a2.IDLE || ap.APSTAT1_a2.STOP || hab.HABSTAT_a8.HABR) { deb_info("AP is busy\n"); return -EBUSY; } return 0; } #endif static int bcm3510_bert_reset(struct bcm3510_state *st) { … } static int bcm3510_refresh_state(struct bcm3510_state *st) { … } static int bcm3510_read_status(struct dvb_frontend *fe, enum fe_status *status) { … } static int bcm3510_read_ber(struct dvb_frontend* fe, u32* ber) { … } static int bcm3510_read_unc(struct dvb_frontend* fe, u32* unc) { … } static int bcm3510_read_signal_strength(struct dvb_frontend* fe, u16* strength) { … } static int bcm3510_read_snr(struct dvb_frontend* fe, u16* snr) { … } /* tuner frontend programming */ static int bcm3510_tuner_cmd(struct bcm3510_state* st,u8 bc, u16 n, u8 a) { … } static int bcm3510_set_freq(struct bcm3510_state* st,u32 freq) { … } static int bcm3510_set_frontend(struct dvb_frontend *fe) { … } static int bcm3510_sleep(struct dvb_frontend* fe) { … } static int bcm3510_get_tune_settings(struct dvb_frontend *fe, struct dvb_frontend_tune_settings *s) { … } static void bcm3510_release(struct dvb_frontend* fe) { … } /* firmware download: * firmware file is build up like this: * 16bit addr, 16bit length, 8byte of length */ #define BCM3510_DEFAULT_FIRMWARE … static int bcm3510_write_ram(struct bcm3510_state *st, u16 addr, const u8 *b, u16 len) { … } static int bcm3510_download_firmware(struct dvb_frontend* fe) { … } static int bcm3510_check_firmware_version(struct bcm3510_state *st) { … } /* (un)resetting the AP */ static int bcm3510_reset(struct bcm3510_state *st) { … } static int bcm3510_clear_reset(struct bcm3510_state *st) { … } static int bcm3510_init_cold(struct bcm3510_state *st) { … } static int bcm3510_init(struct dvb_frontend* fe) { … } static const struct dvb_frontend_ops bcm3510_ops; struct dvb_frontend* bcm3510_attach(const struct bcm3510_config *config, struct i2c_adapter *i2c) { … } EXPORT_SYMBOL_GPL(…); static const struct dvb_frontend_ops bcm3510_ops = …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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