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-rw-r--r--drivers/media/dvb-frontends/bcm3510.c856
1 files changed, 856 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/bcm3510.c b/drivers/media/dvb-frontends/bcm3510.c
new file mode 100644
index 00000000000..033cd7ad3ca
--- /dev/null
+++ b/drivers/media/dvb-frontends/bcm3510.c
@@ -0,0 +1,856 @@
+/*
+ * Support for the Broadcom BCM3510 ATSC demodulator (1st generation Air2PC)
+ *
+ * Copyright (C) 2001-5, B2C2 inc.
+ *
+ * GPL/Linux driver written by Patrick Boettcher <patrick.boettcher@desy.de>
+ *
+ * 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 "dvb_frontend.h"
+#include "bcm3510.h"
+#include "bcm3510_priv.h"
+
+struct bcm3510_state {
+
+ struct i2c_adapter* i2c;
+ const struct bcm3510_config* config;
+ struct dvb_frontend frontend;
+
+ /* demodulator private data */
+ struct mutex hab_mutex;
+ u8 firmware_loaded:1;
+
+ unsigned long next_status_check;
+ unsigned long status_check_interval;
+ struct bcm3510_hab_cmd_status1 status1;
+ struct bcm3510_hab_cmd_status2 status2;
+};
+
+static int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "set debugging level (1=info,2=i2c (|-able)).");
+
+#define dprintk(level,x...) if (level & debug) printk(x)
+#define dbufout(b,l,m) {\
+ int i; \
+ for (i = 0; i < l; i++) \
+ m("%02x ",b[i]); \
+}
+#define deb_info(args...) dprintk(0x01,args)
+#define deb_i2c(args...) dprintk(0x02,args)
+#define deb_hab(args...) dprintk(0x04,args)
+
+/* transfer functions */
+static int bcm3510_writebytes (struct bcm3510_state *state, u8 reg, u8 *buf, u8 len)
+{
+ u8 b[256];
+ int err;
+ struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = b, .len = len + 1 };
+
+ b[0] = reg;
+ memcpy(&b[1],buf,len);
+
+ deb_i2c("i2c wr %02x: ",reg);
+ dbufout(buf,len,deb_i2c);
+ deb_i2c("\n");
+
+ if ((err = i2c_transfer (state->i2c, &msg, 1)) != 1) {
+
+ deb_info("%s: i2c write error (addr %02x, reg %02x, err == %i)\n",
+ __func__, state->config->demod_address, reg, err);
+ return -EREMOTEIO;
+ }
+
+ return 0;
+}
+
+static int bcm3510_readbytes (struct bcm3510_state *state, u8 reg, u8 *buf, u8 len)
+{
+ struct i2c_msg msg[] = {
+ { .addr = state->config->demod_address, .flags = 0, .buf = &reg, .len = 1 },
+ { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = buf, .len = len }
+ };
+ int err;
+
+ memset(buf,0,len);
+
+ if ((err = i2c_transfer (state->i2c, msg, 2)) != 2) {
+ deb_info("%s: i2c read error (addr %02x, reg %02x, err == %i)\n",
+ __func__, state->config->demod_address, reg, err);
+ return -EREMOTEIO;
+ }
+ deb_i2c("i2c rd %02x: ",reg);
+ dbufout(buf,len,deb_i2c);
+ deb_i2c("\n");
+
+ return 0;
+}
+
+static int bcm3510_writeB(struct bcm3510_state *state, u8 reg, bcm3510_register_value v)
+{
+ return bcm3510_writebytes(state,reg,&v.raw,1);
+}
+
+static int bcm3510_readB(struct bcm3510_state *state, u8 reg, bcm3510_register_value *v)
+{
+ return bcm3510_readbytes(state,reg,&v->raw,1);
+}
+
+/* Host Access Buffer transfers */
+static int bcm3510_hab_get_response(struct bcm3510_state *st, u8 *buf, int len)
+{
+ bcm3510_register_value v;
+ int ret,i;
+
+ v.HABADR_a6.HABADR = 0;
+ if ((ret = bcm3510_writeB(st,0xa6,v)) < 0)
+ return ret;
+
+ for (i = 0; i < len; i++) {
+ if ((ret = bcm3510_readB(st,0xa7,&v)) < 0)
+ return ret;
+ buf[i] = v.HABDATA_a7;
+ }
+ return 0;
+}
+
+static int bcm3510_hab_send_request(struct bcm3510_state *st, u8 *buf, int len)
+{
+ bcm3510_register_value v,hab;
+ int ret,i;
+ unsigned long t;
+
+/* Check if any previous HAB request still needs to be serviced by the
+ * Acquisition Processor before sending new request */
+ if ((ret = bcm3510_readB(st,0xa8,&v)) < 0)
+ return ret;
+ if (v.HABSTAT_a8.HABR) {
+ deb_info("HAB is running already - clearing it.\n");
+ v.HABSTAT_a8.HABR = 0;
+ bcm3510_writeB(st,0xa8,v);
+// return -EBUSY;
+ }
+
+/* Send the start HAB Address (automatically incremented after write of
+ * HABDATA) and write the HAB Data */
+ hab.HABADR_a6.HABADR = 0;
+ if ((ret = bcm3510_writeB(st,0xa6,hab)) < 0)
+ return ret;
+
+ for (i = 0; i < len; i++) {
+ hab.HABDATA_a7 = buf[i];
+ if ((ret = bcm3510_writeB(st,0xa7,hab)) < 0)
+ return ret;
+ }
+
+/* Set the HABR bit to indicate AP request in progress (LBHABR allows HABR to
+ * be written) */
+ v.raw = 0; v.HABSTAT_a8.HABR = 1; v.HABSTAT_a8.LDHABR = 1;
+ if ((ret = bcm3510_writeB(st,0xa8,v)) < 0)
+ return ret;
+
+/* Polling method: Wait until the AP finishes processing the HAB request */
+ t = jiffies + 1*HZ;
+ while (time_before(jiffies, t)) {
+ deb_info("waiting for HAB to complete\n");
+ msleep(10);
+ if ((ret = bcm3510_readB(st,0xa8,&v)) < 0)
+ return ret;
+
+ if (!v.HABSTAT_a8.HABR)
+ return 0;
+ }
+
+ deb_info("send_request execution timed out.\n");
+ return -ETIMEDOUT;
+}
+
+static int bcm3510_do_hab_cmd(struct bcm3510_state *st, u8 cmd, u8 msgid, u8 *obuf, u8 olen, u8 *ibuf, u8 ilen)
+{
+ u8 ob[olen+2],ib[ilen+2];
+ int ret = 0;
+
+ ob[0] = cmd;
+ ob[1] = msgid;
+ memcpy(&ob[2],obuf,olen);
+
+ deb_hab("hab snd: ");
+ dbufout(ob,olen+2,deb_hab);
+ deb_hab("\n");
+
+ if (mutex_lock_interruptible(&st->hab_mutex) < 0)
+ return -EAGAIN;
+
+ if ((ret = bcm3510_hab_send_request(st, ob, olen+2)) < 0 ||
+ (ret = bcm3510_hab_get_response(st, ib, ilen+2)) < 0)
+ goto error;
+
+ deb_hab("hab get: ");
+ dbufout(ib,ilen+2,deb_hab);
+ deb_hab("\n");
+
+ memcpy(ibuf,&ib[2],ilen);
+error:
+ mutex_unlock(&st->hab_mutex);
+ return ret;
+}
+
+#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)
+{
+ bcm3510_register_value b;
+ int ret;
+
+ if ((ret = bcm3510_readB(st,0xfa,&b)) < 0)
+ return ret;
+
+ b.BERCTL_fa.RESYNC = 0; bcm3510_writeB(st,0xfa,b);
+ b.BERCTL_fa.RESYNC = 1; bcm3510_writeB(st,0xfa,b);
+ b.BERCTL_fa.RESYNC = 0; bcm3510_writeB(st,0xfa,b);
+ b.BERCTL_fa.CNTCTL = 1; b.BERCTL_fa.BITCNT = 1; bcm3510_writeB(st,0xfa,b);
+
+ /* clear residual bit counter TODO */
+ return 0;
+}
+
+static int bcm3510_refresh_state(struct bcm3510_state *st)
+{
+ if (time_after(jiffies,st->next_status_check)) {
+ bcm3510_do_hab_cmd(st, CMD_STATUS, MSGID_STATUS1, NULL,0, (u8 *)&st->status1, sizeof(st->status1));
+ bcm3510_do_hab_cmd(st, CMD_STATUS, MSGID_STATUS2, NULL,0, (u8 *)&st->status2, sizeof(st->status2));
+ st->next_status_check = jiffies + (st->status_check_interval*HZ)/1000;
+ }
+ return 0;
+}
+
+static int bcm3510_read_status(struct dvb_frontend *fe, fe_status_t *status)
+{
+ struct bcm3510_state* st = fe->demodulator_priv;
+ bcm3510_refresh_state(st);
+
+ *status = 0;
+ if (st->status1.STATUS1.RECEIVER_LOCK)
+ *status |= FE_HAS_LOCK | FE_HAS_SYNC;
+
+ if (st->status1.STATUS1.FEC_LOCK)
+ *status |= FE_HAS_VITERBI;
+
+ if (st->status1.STATUS1.OUT_PLL_LOCK)
+ *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER;
+
+ if (*status & FE_HAS_LOCK)
+ st->status_check_interval = 1500;
+ else /* more frequently checks if no lock has been achieved yet */
+ st->status_check_interval = 500;
+
+ deb_info("real_status: %02x\n",*status);
+ return 0;
+}
+
+static int bcm3510_read_ber(struct dvb_frontend* fe, u32* ber)
+{
+ struct bcm3510_state* st = fe->demodulator_priv;
+ bcm3510_refresh_state(st);
+
+ *ber = (st->status2.LDBER0 << 16) | (st->status2.LDBER1 << 8) | st->status2.LDBER2;
+ return 0;
+}
+
+static int bcm3510_read_unc(struct dvb_frontend* fe, u32* unc)
+{
+ struct bcm3510_state* st = fe->demodulator_priv;
+ bcm3510_refresh_state(st);
+ *unc = (st->status2.LDUERC0 << 8) | st->status2.LDUERC1;
+ return 0;
+}
+
+static int bcm3510_read_signal_strength(struct dvb_frontend* fe, u16* strength)
+{
+ struct bcm3510_state* st = fe->demodulator_priv;
+ s32 t;
+
+ bcm3510_refresh_state(st);
+ t = st->status2.SIGNAL;
+
+ if (t > 190)
+ t = 190;
+ if (t < 90)
+ t = 90;
+
+ t -= 90;
+ t = t * 0xff / 100;
+ /* normalize if necessary */
+ *strength = (t << 8) | t;
+ return 0;
+}
+
+static int bcm3510_read_snr(struct dvb_frontend* fe, u16* snr)
+{
+ struct bcm3510_state* st = fe->demodulator_priv;
+ bcm3510_refresh_state(st);
+
+ *snr = st->status1.SNR_EST0*1000 + ((st->status1.SNR_EST1*1000) >> 8);
+ return 0;
+}
+
+/* tuner frontend programming */
+static int bcm3510_tuner_cmd(struct bcm3510_state* st,u8 bc, u16 n, u8 a)
+{
+ struct bcm3510_hab_cmd_tune c;
+ memset(&c,0,sizeof(struct bcm3510_hab_cmd_tune));
+
+/* I2C Mode disabled, set 16 control / Data pairs */
+ c.length = 0x10;
+ c.clock_width = 0;
+/* CS1, CS0, DATA, CLK bits control the tuner RF_AGC_SEL pin is set to
+ * logic high (as Configuration) */
+ c.misc = 0x10;
+/* Set duration of the initial state of TUNCTL = 3.34 micro Sec */
+ c.TUNCTL_state = 0x40;
+
+/* PRESCALER DIVIDE RATIO | BC1_2_3_4; (band switch), 1stosc REFERENCE COUNTER REF_S12 and REF_S11 */
+ c.ctl_dat[0].ctrl.size = BITS_8;
+ c.ctl_dat[0].data = 0x80 | bc;
+
+/* Control DATA pin, 1stosc REFERENCE COUNTER REF_S10 to REF_S3 */
+ c.ctl_dat[1].ctrl.size = BITS_8;
+ c.ctl_dat[1].data = 4;
+
+/* set CONTROL BIT 1 to 1, 1stosc REFERENCE COUNTER REF_S2 to REF_S1 */
+ c.ctl_dat[2].ctrl.size = BITS_3;
+ c.ctl_dat[2].data = 0x20;
+
+/* control CS0 pin, pulse byte ? */
+ c.ctl_dat[3].ctrl.size = BITS_3;
+ c.ctl_dat[3].ctrl.clk_off = 1;
+ c.ctl_dat[3].ctrl.cs0 = 1;
+ c.ctl_dat[3].data = 0x40;
+
+/* PGM_S18 to PGM_S11 */
+ c.ctl_dat[4].ctrl.size = BITS_8;
+ c.ctl_dat[4].data = n >> 3;
+
+/* PGM_S10 to PGM_S8, SWL_S7 to SWL_S3 */
+ c.ctl_dat[5].ctrl.size = BITS_8;
+ c.ctl_dat[5].data = ((n & 0x7) << 5) | (a >> 2);
+
+/* SWL_S2 and SWL_S1, set CONTROL BIT 2 to 0 */
+ c.ctl_dat[6].ctrl.size = BITS_3;
+ c.ctl_dat[6].data = (a << 6) & 0xdf;
+
+/* control CS0 pin, pulse byte ? */
+ c.ctl_dat[7].ctrl.size = BITS_3;
+ c.ctl_dat[7].ctrl.clk_off = 1;
+ c.ctl_dat[7].ctrl.cs0 = 1;
+ c.ctl_dat[7].data = 0x40;
+
+/* PRESCALER DIVIDE RATIO, 2ndosc REFERENCE COUNTER REF_S12 and REF_S11 */
+ c.ctl_dat[8].ctrl.size = BITS_8;
+ c.ctl_dat[8].data = 0x80;
+
+/* 2ndosc REFERENCE COUNTER REF_S10 to REF_S3 */
+ c.ctl_dat[9].ctrl.size = BITS_8;
+ c.ctl_dat[9].data = 0x10;
+
+/* set CONTROL BIT 1 to 1, 2ndosc REFERENCE COUNTER REF_S2 to REF_S1 */
+ c.ctl_dat[10].ctrl.size = BITS_3;
+ c.ctl_dat[10].data = 0x20;
+
+/* pulse byte */
+ c.ctl_dat[11].ctrl.size = BITS_3;
+ c.ctl_dat[11].ctrl.clk_off = 1;
+ c.ctl_dat[11].ctrl.cs1 = 1;
+ c.ctl_dat[11].data = 0x40;
+
+/* PGM_S18 to PGM_S11 */
+ c.ctl_dat[12].ctrl.size = BITS_8;
+ c.ctl_dat[12].data = 0x2a;
+
+/* PGM_S10 to PGM_S8 and SWL_S7 to SWL_S3 */
+ c.ctl_dat[13].ctrl.size = BITS_8;
+ c.ctl_dat[13].data = 0x8e;
+
+/* SWL_S2 and SWL_S1 and set CONTROL BIT 2 to 0 */
+ c.ctl_dat[14].ctrl.size = BITS_3;
+ c.ctl_dat[14].data = 0;
+
+/* Pulse Byte */
+ c.ctl_dat[15].ctrl.size = BITS_3;
+ c.ctl_dat[15].ctrl.clk_off = 1;
+ c.ctl_dat[15].ctrl.cs1 = 1;
+ c.ctl_dat[15].data = 0x40;
+
+ return bcm3510_do_hab_cmd(st,CMD_TUNE, MSGID_TUNE,(u8 *) &c,sizeof(c), NULL, 0);
+}
+
+static int bcm3510_set_freq(struct bcm3510_state* st,u32 freq)
+{
+ u8 bc,a;
+ u16 n;
+ s32 YIntercept,Tfvco1;
+
+ freq /= 1000;
+
+ deb_info("%dkHz:",freq);
+ /* set Band Switch */
+ if (freq <= 168000)
+ bc = 0x1c;
+ else if (freq <= 378000)
+ bc = 0x2c;
+ else
+ bc = 0x30;
+
+ if (freq >= 470000) {
+ freq -= 470001;
+ YIntercept = 18805;
+ } else if (freq >= 90000) {
+ freq -= 90001;
+ YIntercept = 15005;
+ } else if (freq >= 76000){
+ freq -= 76001;
+ YIntercept = 14865;
+ } else {
+ freq -= 54001;
+ YIntercept = 14645;
+ }
+
+ Tfvco1 = (((freq/6000)*60 + YIntercept)*4)/10;
+
+ n = Tfvco1 >> 6;
+ a = Tfvco1 & 0x3f;
+
+ deb_info(" BC1_2_3_4: %x, N: %x A: %x\n", bc, n, a);
+ if (n >= 16 && n <= 2047)
+ return bcm3510_tuner_cmd(st,bc,n,a);
+
+ return -EINVAL;
+}
+
+static int bcm3510_set_frontend(struct dvb_frontend *fe)
+{
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+ struct bcm3510_state* st = fe->demodulator_priv;
+ struct bcm3510_hab_cmd_ext_acquire cmd;
+ struct bcm3510_hab_cmd_bert_control bert;
+ int ret;
+
+ memset(&cmd,0,sizeof(cmd));
+ switch (c->modulation) {
+ case QAM_256:
+ cmd.ACQUIRE0.MODE = 0x1;
+ cmd.ACQUIRE1.SYM_RATE = 0x1;
+ cmd.ACQUIRE1.IF_FREQ = 0x1;
+ break;
+ case QAM_64:
+ cmd.ACQUIRE0.MODE = 0x2;
+ cmd.ACQUIRE1.SYM_RATE = 0x2;
+ cmd.ACQUIRE1.IF_FREQ = 0x1;
+ break;
+#if 0
+ case QAM_256:
+ cmd.ACQUIRE0.MODE = 0x3;
+ break;
+ case QAM_128:
+ cmd.ACQUIRE0.MODE = 0x4;
+ break;
+ case QAM_64:
+ cmd.ACQUIRE0.MODE = 0x5;
+ break;
+ case QAM_32:
+ cmd.ACQUIRE0.MODE = 0x6;
+ break;
+ case QAM_16:
+ cmd.ACQUIRE0.MODE = 0x7;
+ break;
+#endif
+ case VSB_8:
+ cmd.ACQUIRE0.MODE = 0x8;
+ cmd.ACQUIRE1.SYM_RATE = 0x0;
+ cmd.ACQUIRE1.IF_FREQ = 0x0;
+ break;
+ case VSB_16:
+ cmd.ACQUIRE0.MODE = 0x9;
+ cmd.ACQUIRE1.SYM_RATE = 0x0;
+ cmd.ACQUIRE1.IF_FREQ = 0x0;
+ default:
+ return -EINVAL;
+ };
+ cmd.ACQUIRE0.OFFSET = 0;
+ cmd.ACQUIRE0.NTSCSWEEP = 1;
+ cmd.ACQUIRE0.FA = 1;
+ cmd.ACQUIRE0.BW = 0;
+
+/* if (enableOffset) {
+ cmd.IF_OFFSET0 = xx;
+ cmd.IF_OFFSET1 = xx;
+
+ cmd.SYM_OFFSET0 = xx;
+ cmd.SYM_OFFSET1 = xx;
+ if (enableNtscSweep) {
+ cmd.NTSC_OFFSET0;
+ cmd.NTSC_OFFSET1;
+ }
+ } */
+ bcm3510_do_hab_cmd(st, CMD_ACQUIRE, MSGID_EXT_TUNER_ACQUIRE, (u8 *) &cmd, sizeof(cmd), NULL, 0);
+
+/* doing it with different MSGIDs, data book and source differs */
+ bert.BE = 0;
+ bert.unused = 0;
+ bcm3510_do_hab_cmd(st, CMD_STATE_CONTROL, MSGID_BERT_CONTROL, (u8 *) &bert, sizeof(bert), NULL, 0);
+ bcm3510_do_hab_cmd(st, CMD_STATE_CONTROL, MSGID_BERT_SET, (u8 *) &bert, sizeof(bert), NULL, 0);
+
+ bcm3510_bert_reset(st);
+
+ ret = bcm3510_set_freq(st, c->frequency);
+ if (ret < 0)
+ return ret;
+
+ memset(&st->status1,0,sizeof(st->status1));
+ memset(&st->status2,0,sizeof(st->status2));
+ st->status_check_interval = 500;
+
+/* Give the AP some time */
+ msleep(200);
+
+ return 0;
+}
+
+static int bcm3510_sleep(struct dvb_frontend* fe)
+{
+ return 0;
+}
+
+static int bcm3510_get_tune_settings(struct dvb_frontend *fe, struct dvb_frontend_tune_settings *s)
+{
+ s->min_delay_ms = 1000;
+ s->step_size = 0;
+ s->max_drift = 0;
+ return 0;
+}
+
+static void bcm3510_release(struct dvb_frontend* fe)
+{
+ struct bcm3510_state* state = fe->demodulator_priv;
+ kfree(state);
+}
+
+/* firmware download:
+ * firmware file is build up like this:
+ * 16bit addr, 16bit length, 8byte of length
+ */
+#define BCM3510_DEFAULT_FIRMWARE "dvb-fe-bcm3510-01.fw"
+
+static int bcm3510_write_ram(struct bcm3510_state *st, u16 addr, const u8 *b,
+ u16 len)
+{
+ int ret = 0,i;
+ bcm3510_register_value vH, vL,vD;
+
+ vH.MADRH_a9 = addr >> 8;
+ vL.MADRL_aa = addr;
+ if ((ret = bcm3510_writeB(st,0xa9,vH)) < 0) return ret;
+ if ((ret = bcm3510_writeB(st,0xaa,vL)) < 0) return ret;
+
+ for (i = 0; i < len; i++) {
+ vD.MDATA_ab = b[i];
+ if ((ret = bcm3510_writeB(st,0xab,vD)) < 0)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int bcm3510_download_firmware(struct dvb_frontend* fe)
+{
+ struct bcm3510_state* st = fe->demodulator_priv;
+ const struct firmware *fw;
+ u16 addr,len;
+ const u8 *b;
+ int ret,i;
+
+ deb_info("requesting firmware\n");
+ if ((ret = st->config->request_firmware(fe, &fw, BCM3510_DEFAULT_FIRMWARE)) < 0) {
+ err("could not load firmware (%s): %d",BCM3510_DEFAULT_FIRMWARE,ret);
+ return ret;
+ }
+ deb_info("got firmware: %zd\n",fw->size);
+
+ b = fw->data;
+ for (i = 0; i < fw->size;) {
+ addr = le16_to_cpu( *( (u16 *)&b[i] ) );
+ len = le16_to_cpu( *( (u16 *)&b[i+2] ) );
+ deb_info("firmware chunk, addr: 0x%04x, len: 0x%04x, total length: 0x%04zx\n",addr,len,fw->size);
+ if ((ret = bcm3510_write_ram(st,addr,&b[i+4],len)) < 0) {
+ err("firmware download failed: %d\n",ret);
+ return ret;
+ }
+ i += 4 + len;
+ }
+ release_firmware(fw);
+ deb_info("firmware download successfully completed\n");
+ return 0;
+}
+
+static int bcm3510_check_firmware_version(struct bcm3510_state *st)
+{
+ struct bcm3510_hab_cmd_get_version_info ver;
+ bcm3510_do_hab_cmd(st,CMD_GET_VERSION_INFO,MSGID_GET_VERSION_INFO,NULL,0,(u8*)&ver,sizeof(ver));
+
+ deb_info("Version information: 0x%02x 0x%02x 0x%02x 0x%02x\n",
+ ver.microcode_version, ver.script_version, ver.config_version, ver.demod_version);
+
+ if (ver.script_version == BCM3510_DEF_SCRIPT_VERSION &&
+ ver.config_version == BCM3510_DEF_CONFIG_VERSION &&
+ ver.demod_version == BCM3510_DEF_DEMOD_VERSION)
+ return 0;
+
+ deb_info("version check failed\n");
+ return -ENODEV;
+}
+
+/* (un)resetting the AP */
+static int bcm3510_reset(struct bcm3510_state *st)
+{
+ int ret;
+ unsigned long t;
+ bcm3510_register_value v;
+
+ bcm3510_readB(st,0xa0,&v); v.HCTL1_a0.RESET = 1;
+ if ((ret = bcm3510_writeB(st,0xa0,v)) < 0)
+ return ret;
+
+ t = jiffies + 3*HZ;
+ while (time_before(jiffies, t)) {
+ msleep(10);
+ if ((ret = bcm3510_readB(st,0xa2,&v)) < 0)
+ return ret;
+
+ if (v.APSTAT1_a2.RESET)
+ return 0;
+ }
+ deb_info("reset timed out\n");
+ return -ETIMEDOUT;
+}
+
+static int bcm3510_clear_reset(struct bcm3510_state *st)
+{
+ bcm3510_register_value v;
+ int ret;
+ unsigned long t;
+
+ v.raw = 0;
+ if ((ret = bcm3510_writeB(st,0xa0,v)) < 0)
+ return ret;
+
+ t = jiffies + 3*HZ;
+ while (time_before(jiffies, t)) {
+ msleep(10);
+ if ((ret = bcm3510_readB(st,0xa2,&v)) < 0)
+ return ret;
+
+ /* verify that reset is cleared */
+ if (!v.APSTAT1_a2.RESET)
+ return 0;
+ }
+ deb_info("reset clear timed out\n");
+ return -ETIMEDOUT;
+}
+
+static int bcm3510_init_cold(struct bcm3510_state *st)
+{
+ int ret;
+ bcm3510_register_value v;
+
+ /* read Acquisation Processor status register and check it is not in RUN mode */
+ if ((ret = bcm3510_readB(st,0xa2,&v)) < 0)
+ return ret;
+ if (v.APSTAT1_a2.RUN) {
+ deb_info("AP is already running - firmware already loaded.\n");
+ return 0;
+ }
+
+ deb_info("reset?\n");
+ if ((ret = bcm3510_reset(st)) < 0)
+ return ret;
+
+ deb_info("tristate?\n");
+ /* tri-state */
+ v.TSTCTL_2e.CTL = 0;
+ if ((ret = bcm3510_writeB(st,0x2e,v)) < 0)
+ return ret;
+
+ deb_info("firmware?\n");
+ if ((ret = bcm3510_download_firmware(&st->frontend)) < 0 ||
+ (ret = bcm3510_clear_reset(st)) < 0)
+ return ret;
+
+ /* anything left here to Let the acquisition processor begin execution at program counter 0000 ??? */
+
+ return 0;
+}
+
+static int bcm3510_init(struct dvb_frontend* fe)
+{
+ struct bcm3510_state* st = fe->demodulator_priv;
+ bcm3510_register_value j;
+ struct bcm3510_hab_cmd_set_agc c;
+ int ret;
+
+ if ((ret = bcm3510_readB(st,0xca,&j)) < 0)
+ return ret;
+
+ deb_info("JDEC: %02x\n",j.raw);
+
+ switch (j.JDEC_ca.JDEC) {
+ case JDEC_WAIT_AT_RAM:
+ deb_info("attempting to download firmware\n");
+ if ((ret = bcm3510_init_cold(st)) < 0)
+ return ret;
+ case JDEC_EEPROM_LOAD_WAIT: /* fall-through is wanted */
+ deb_info("firmware is loaded\n");
+ bcm3510_check_firmware_version(st);
+ break;
+ default:
+ return -ENODEV;
+ }
+
+ memset(&c,0,1);
+ c.SEL = 1;
+ bcm3510_do_hab_cmd(st,CMD_AUTO_PARAM,MSGID_SET_RF_AGC_SEL,(u8 *)&c,sizeof(c),NULL,0);
+
+ return 0;
+}
+
+
+static struct dvb_frontend_ops bcm3510_ops;
+
+struct dvb_frontend* bcm3510_attach(const struct bcm3510_config *config,
+ struct i2c_adapter *i2c)
+{
+ struct bcm3510_state* state = NULL;
+ int ret;
+ bcm3510_register_value v;
+
+ /* allocate memory for the internal state */
+ state = kzalloc(sizeof(struct bcm3510_state), GFP_KERNEL);
+ if (state == NULL)
+ goto error;
+
+ /* setup the state */
+
+ state->config = config;
+ state->i2c = i2c;
+
+ /* create dvb_frontend */
+ memcpy(&state->frontend.ops, &bcm3510_ops, sizeof(struct dvb_frontend_ops));
+ state->frontend.demodulator_priv = state;
+
+ mutex_init(&state->hab_mutex);
+
+ if ((ret = bcm3510_readB(state,0xe0,&v)) < 0)
+ goto error;
+
+ deb_info("Revision: 0x%1x, Layer: 0x%1x.\n",v.REVID_e0.REV,v.REVID_e0.LAYER);
+
+ if ((v.REVID_e0.REV != 0x1 && v.REVID_e0.LAYER != 0xb) && /* cold */
+ (v.REVID_e0.REV != 0x8 && v.REVID_e0.LAYER != 0x0)) /* warm */
+ goto error;
+
+ info("Revision: 0x%1x, Layer: 0x%1x.",v.REVID_e0.REV,v.REVID_e0.LAYER);
+
+ bcm3510_reset(state);
+
+ return &state->frontend;
+
+error:
+ kfree(state);
+ return NULL;
+}
+EXPORT_SYMBOL(bcm3510_attach);
+
+static struct dvb_frontend_ops bcm3510_ops = {
+ .delsys = { SYS_ATSC, SYS_DVBC_ANNEX_B },
+ .info = {
+ .name = "Broadcom BCM3510 VSB/QAM frontend",
+ .frequency_min = 54000000,
+ .frequency_max = 803000000,
+ /* stepsize is just a guess */
+ .frequency_stepsize = 0,
+ .caps =
+ FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
+ FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
+ FE_CAN_8VSB | FE_CAN_16VSB |
+ FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_128 | FE_CAN_QAM_256
+ },
+
+ .release = bcm3510_release,
+
+ .init = bcm3510_init,
+ .sleep = bcm3510_sleep,
+
+ .set_frontend = bcm3510_set_frontend,
+ .get_tune_settings = bcm3510_get_tune_settings,
+
+ .read_status = bcm3510_read_status,
+ .read_ber = bcm3510_read_ber,
+ .read_signal_strength = bcm3510_read_signal_strength,
+ .read_snr = bcm3510_read_snr,
+ .read_ucblocks = bcm3510_read_unc,
+};
+
+MODULE_DESCRIPTION("Broadcom BCM3510 ATSC (8VSB/16VSB & ITU J83 AnnexB FEC QAM64/256) demodulator driver");
+MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@desy.de>");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-19 06:58:18 +0000