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path: root/drivers/media/usb/ttusb-dec/ttusbdecfe.c
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Diffstat (limited to 'drivers/media/usb/ttusb-dec/ttusbdecfe.c')
-rw-r--r--drivers/media/usb/ttusb-dec/ttusbdecfe.c301
1 files changed, 301 insertions, 0 deletions
diff --git a/drivers/media/usb/ttusb-dec/ttusbdecfe.c b/drivers/media/usb/ttusb-dec/ttusbdecfe.c
new file mode 100644
index 000000000..9c29552ae
--- /dev/null
+++ b/drivers/media/usb/ttusb-dec/ttusbdecfe.c
@@ -0,0 +1,301 @@
+/*
+ * TTUSB DEC Frontend Driver
+ *
+ * Copyright (C) 2003-2004 Alex Woods <linux-dvb@giblets.org>
+ *
+ * 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 "dvb_frontend.h"
+#include "ttusbdecfe.h"
+
+
+#define LOF_HI 10600000
+#define LOF_LO 9750000
+
+struct ttusbdecfe_state {
+
+ /* configuration settings */
+ const struct ttusbdecfe_config* config;
+
+ struct dvb_frontend frontend;
+
+ u8 hi_band;
+ u8 voltage;
+};
+
+
+static int ttusbdecfe_dvbs_read_status(struct dvb_frontend *fe,
+ fe_status_t *status)
+{
+ *status = FE_HAS_SIGNAL | FE_HAS_VITERBI |
+ FE_HAS_SYNC | FE_HAS_CARRIER | FE_HAS_LOCK;
+ return 0;
+}
+
+
+static int ttusbdecfe_dvbt_read_status(struct dvb_frontend *fe,
+ fe_status_t *status)
+{
+ struct ttusbdecfe_state* state = fe->demodulator_priv;
+ u8 b[] = { 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00 };
+ u8 result[4];
+ int len, ret;
+
+ *status=0;
+
+ ret=state->config->send_command(fe, 0x73, sizeof(b), b, &len, result);
+ if(ret)
+ return ret;
+
+ if(len != 4) {
+ printk(KERN_ERR "%s: unexpected reply\n", __func__);
+ return -EIO;
+ }
+
+ switch(result[3]) {
+ case 1: /* not tuned yet */
+ case 2: /* no signal/no lock*/
+ break;
+ case 3: /* signal found and locked*/
+ *status = FE_HAS_SIGNAL | FE_HAS_VITERBI |
+ FE_HAS_SYNC | FE_HAS_CARRIER | FE_HAS_LOCK;
+ break;
+ case 4:
+ *status = FE_TIMEDOUT;
+ break;
+ default:
+ pr_info("%s: returned unknown value: %d\n",
+ __func__, result[3]);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int ttusbdecfe_dvbt_set_frontend(struct dvb_frontend *fe)
+{
+ struct dtv_frontend_properties *p = &fe->dtv_property_cache;
+ struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv;
+ u8 b[] = { 0x00, 0x00, 0x00, 0x03,
+ 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x01,
+ 0x00, 0x00, 0x00, 0xff,
+ 0x00, 0x00, 0x00, 0xff };
+
+ __be32 freq = htonl(p->frequency / 1000);
+ memcpy(&b[4], &freq, sizeof (u32));
+ state->config->send_command(fe, 0x71, sizeof(b), b, NULL, NULL);
+
+ return 0;
+}
+
+static int ttusbdecfe_dvbt_get_tune_settings(struct dvb_frontend* fe,
+ struct dvb_frontend_tune_settings* fesettings)
+{
+ fesettings->min_delay_ms = 1500;
+ /* Drift compensation makes no sense for DVB-T */
+ fesettings->step_size = 0;
+ fesettings->max_drift = 0;
+ return 0;
+}
+
+static int ttusbdecfe_dvbs_set_frontend(struct dvb_frontend *fe)
+{
+ struct dtv_frontend_properties *p = &fe->dtv_property_cache;
+ struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv;
+
+ u8 b[] = { 0x00, 0x00, 0x00, 0x01,
+ 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x01,
+ 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00 };
+ __be32 freq;
+ __be32 sym_rate;
+ __be32 band;
+ __be32 lnb_voltage;
+
+ freq = htonl(p->frequency +
+ (state->hi_band ? LOF_HI : LOF_LO));
+ memcpy(&b[4], &freq, sizeof(u32));
+ sym_rate = htonl(p->symbol_rate);
+ memcpy(&b[12], &sym_rate, sizeof(u32));
+ band = htonl(state->hi_band ? LOF_HI : LOF_LO);
+ memcpy(&b[24], &band, sizeof(u32));
+ lnb_voltage = htonl(state->voltage);
+ memcpy(&b[28], &lnb_voltage, sizeof(u32));
+
+ state->config->send_command(fe, 0x71, sizeof(b), b, NULL, NULL);
+
+ return 0;
+}
+
+static int ttusbdecfe_dvbs_diseqc_send_master_cmd(struct dvb_frontend* fe, struct dvb_diseqc_master_cmd *cmd)
+{
+ struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv;
+ u8 b[] = { 0x00, 0xff, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00 };
+
+ if (cmd->msg_len > sizeof(b) - 4)
+ return -EINVAL;
+
+ memcpy(&b[4], cmd->msg, cmd->msg_len);
+
+ state->config->send_command(fe, 0x72,
+ sizeof(b) - (6 - cmd->msg_len), b,
+ NULL, NULL);
+
+ return 0;
+}
+
+
+static int ttusbdecfe_dvbs_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
+{
+ struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv;
+
+ state->hi_band = (SEC_TONE_ON == tone);
+
+ return 0;
+}
+
+
+static int ttusbdecfe_dvbs_set_voltage(struct dvb_frontend* fe, fe_sec_voltage_t voltage)
+{
+ struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv;
+
+ switch (voltage) {
+ case SEC_VOLTAGE_13:
+ state->voltage = 13;
+ break;
+ case SEC_VOLTAGE_18:
+ state->voltage = 18;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static void ttusbdecfe_release(struct dvb_frontend* fe)
+{
+ struct ttusbdecfe_state* state = (struct ttusbdecfe_state*) fe->demodulator_priv;
+ kfree(state);
+}
+
+static struct dvb_frontend_ops ttusbdecfe_dvbt_ops;
+
+struct dvb_frontend* ttusbdecfe_dvbt_attach(const struct ttusbdecfe_config* config)
+{
+ struct ttusbdecfe_state* state = NULL;
+
+ /* allocate memory for the internal state */
+ state = kmalloc(sizeof(struct ttusbdecfe_state), GFP_KERNEL);
+ if (state == NULL)
+ return NULL;
+
+ /* setup the state */
+ state->config = config;
+
+ /* create dvb_frontend */
+ memcpy(&state->frontend.ops, &ttusbdecfe_dvbt_ops, sizeof(struct dvb_frontend_ops));
+ state->frontend.demodulator_priv = state;
+ return &state->frontend;
+}
+
+static struct dvb_frontend_ops ttusbdecfe_dvbs_ops;
+
+struct dvb_frontend* ttusbdecfe_dvbs_attach(const struct ttusbdecfe_config* config)
+{
+ struct ttusbdecfe_state* state = NULL;
+
+ /* allocate memory for the internal state */
+ state = kmalloc(sizeof(struct ttusbdecfe_state), GFP_KERNEL);
+ if (state == NULL)
+ return NULL;
+
+ /* setup the state */
+ state->config = config;
+ state->voltage = 0;
+ state->hi_band = 0;
+
+ /* create dvb_frontend */
+ memcpy(&state->frontend.ops, &ttusbdecfe_dvbs_ops, sizeof(struct dvb_frontend_ops));
+ state->frontend.demodulator_priv = state;
+ return &state->frontend;
+}
+
+static struct dvb_frontend_ops ttusbdecfe_dvbt_ops = {
+ .delsys = { SYS_DVBT },
+ .info = {
+ .name = "TechnoTrend/Hauppauge DEC2000-t Frontend",
+ .frequency_min = 51000000,
+ .frequency_max = 858000000,
+ .frequency_stepsize = 62500,
+ .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_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
+ FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO |
+ FE_CAN_HIERARCHY_AUTO,
+ },
+
+ .release = ttusbdecfe_release,
+
+ .set_frontend = ttusbdecfe_dvbt_set_frontend,
+
+ .get_tune_settings = ttusbdecfe_dvbt_get_tune_settings,
+
+ .read_status = ttusbdecfe_dvbt_read_status,
+};
+
+static struct dvb_frontend_ops ttusbdecfe_dvbs_ops = {
+ .delsys = { SYS_DVBS },
+ .info = {
+ .name = "TechnoTrend/Hauppauge DEC3000-s Frontend",
+ .frequency_min = 950000,
+ .frequency_max = 2150000,
+ .frequency_stepsize = 125,
+ .symbol_rate_min = 1000000, /* guessed */
+ .symbol_rate_max = 45000000, /* guessed */
+ .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_QPSK
+ },
+
+ .release = ttusbdecfe_release,
+
+ .set_frontend = ttusbdecfe_dvbs_set_frontend,
+
+ .read_status = ttusbdecfe_dvbs_read_status,
+
+ .diseqc_send_master_cmd = ttusbdecfe_dvbs_diseqc_send_master_cmd,
+ .set_voltage = ttusbdecfe_dvbs_set_voltage,
+ .set_tone = ttusbdecfe_dvbs_set_tone,
+};
+
+MODULE_DESCRIPTION("TTUSB DEC DVB-T/S Demodulator driver");
+MODULE_AUTHOR("Alex Woods/Andrew de Quincey");
+MODULE_LICENSE("GPL");
+
+EXPORT_SYMBOL(ttusbdecfe_dvbt_attach);
+EXPORT_SYMBOL(ttusbdecfe_dvbs_attach);