V4L/DVB (4029): [PATCH] Genpix 8PSK->USB driver (Take 2)
This is a patch which includes support for the GENPIX 8PSK->USB module. The
board supports QPSK, BPSK and 8PSK decoding (though I don't think it will be
DVB-S2 compliant) With the following patch, the boad is equivalent to a budget
card (no CA Module)
The patch which adds 8psk suppot will follow, but is seperate, as it requires
DVB-S2 support
More info on the board can be found at www.genpix-electronics.com (and they
host the requisite firmwares there as well)
Signed off by: Alan Nisota <alannisota@gmail.com>
Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/dvb/dvb-usb/gp8psk-fe.c b/drivers/media/dvb/dvb-usb/gp8psk-fe.c
new file mode 100644
index 0000000..6ccbdc9
--- /dev/null
+++ b/drivers/media/dvb/dvb-usb/gp8psk-fe.c
@@ -0,0 +1,272 @@
+/* DVB USB compliant Linux driver for the
+ * - GENPIX 8pks/qpsk USB2.0 DVB-S module
+ *
+ * Copyright (C) 2006 Alan Nisota (alannisota@gmail.com)
+ *
+ * Thanks to GENPIX for the sample code used to implement this module.
+ *
+ * This module is based off the vp7045 and vp702x modules
+ *
+ * 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, version 2.
+ *
+ * see Documentation/dvb/README.dvb-usb for more information
+ */
+#include "gp8psk.h"
+
+struct gp8psk_fe_state {
+ struct dvb_frontend fe;
+
+ struct dvb_usb_device *d;
+
+ u16 snr;
+
+ unsigned long next_snr_check;
+};
+
+static int gp8psk_fe_read_status(struct dvb_frontend* fe, fe_status_t *status)
+{
+ struct gp8psk_fe_state *st = fe->demodulator_priv;
+ u8 lock;
+
+ if (gp8psk_usb_in_op(st->d, GET_SIGNAL_LOCK, 0, 0, &lock,1))
+ return -EINVAL;
+
+ if (lock)
+ *status = FE_HAS_LOCK | FE_HAS_SYNC | FE_HAS_VITERBI | FE_HAS_SIGNAL | FE_HAS_CARRIER;
+ else
+ *status = 0;
+
+ return 0;
+}
+
+/* not supported by this Frontend */
+static int gp8psk_fe_read_ber(struct dvb_frontend* fe, u32 *ber)
+{
+ (void) fe;
+ *ber = 0;
+ return 0;
+}
+
+/* not supported by this Frontend */
+static int gp8psk_fe_read_unc_blocks(struct dvb_frontend* fe, u32 *unc)
+{
+ (void) fe;
+ *unc = 0;
+ return 0;
+}
+
+static int gp8psk_fe_read_snr(struct dvb_frontend* fe, u16 *snr)
+{
+ struct gp8psk_fe_state *st = fe->demodulator_priv;
+ u8 buf[2];
+
+ if (time_after(jiffies,st->next_snr_check)) {
+ gp8psk_usb_in_op(st->d,GET_SIGNAL_STRENGTH,0,0,buf,2);
+ *snr = (int)(buf[1]) << 8 | buf[0];
+ /* snr is reported in dBu*256 */
+ /* snr / 38.4 ~= 100% strength */
+ /* snr * 17 returns 100% strength as 65535 */
+ if (*snr <= 3855)
+ *snr = (*snr<<4) + *snr; // snr * 17
+ else
+ *snr = 65535;
+ st->next_snr_check = jiffies + (10*HZ)/1000;
+ } else {
+ *snr = st->snr;
+ }
+ return 0;
+}
+
+static int gp8psk_fe_read_signal_strength(struct dvb_frontend* fe, u16 *strength)
+{
+ return gp8psk_fe_read_snr(fe, strength);
+}
+
+static int gp8psk_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
+{
+ tune->min_delay_ms = 800;
+ return 0;
+}
+
+static int gp8psk_fe_set_frontend(struct dvb_frontend* fe,
+ struct dvb_frontend_parameters *fep)
+{
+ struct gp8psk_fe_state *state = fe->demodulator_priv;
+ u8 cmd[10];
+ u32 freq = fep->frequency * 1000;
+
+ cmd[4] = freq & 0xff;
+ cmd[5] = (freq >> 8) & 0xff;
+ cmd[6] = (freq >> 16) & 0xff;
+ cmd[7] = (freq >> 24) & 0xff;
+
+ switch(fe->ops.info.type) {
+ case FE_QPSK:
+ cmd[0] = fep->u.qpsk.symbol_rate & 0xff;
+ cmd[1] = (fep->u.qpsk.symbol_rate >> 8) & 0xff;
+ cmd[2] = (fep->u.qpsk.symbol_rate >> 16) & 0xff;
+ cmd[3] = (fep->u.qpsk.symbol_rate >> 24) & 0xff;
+ cmd[8] = ADV_MOD_DVB_QPSK;
+ cmd[9] = 0x03; /*ADV_MOD_FEC_XXX*/
+ break;
+ default:
+ // other modes are unsuported right now
+ cmd[0] = 0;
+ cmd[1] = 0;
+ cmd[2] = 0;
+ cmd[3] = 0;
+ cmd[8] = 0;
+ cmd[9] = 0;
+ break;
+ }
+
+ gp8psk_usb_out_op(state->d,TUNE_8PSK,0,0,cmd,10);
+
+ state->next_snr_check = jiffies;
+
+ return 0;
+}
+
+static int gp8psk_fe_get_frontend(struct dvb_frontend* fe,
+ struct dvb_frontend_parameters *fep)
+{
+ return 0;
+}
+
+
+static int gp8psk_fe_send_diseqc_msg (struct dvb_frontend* fe,
+ struct dvb_diseqc_master_cmd *m)
+{
+ struct gp8psk_fe_state *st = fe->demodulator_priv;
+
+ deb_fe("%s\n",__FUNCTION__);
+
+ if (gp8psk_usb_out_op(st->d,SEND_DISEQC_COMMAND, m->msg[0], 0,
+ m->msg, m->msg_len)) {
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int gp8psk_fe_send_diseqc_burst (struct dvb_frontend* fe,
+ fe_sec_mini_cmd_t burst)
+{
+ struct gp8psk_fe_state *st = fe->demodulator_priv;
+ u8 cmd;
+
+ deb_fe("%s\n",__FUNCTION__);
+
+ /* These commands are certainly wrong */
+ cmd = (burst == SEC_MINI_A) ? 0x00 : 0x01;
+
+ if (gp8psk_usb_out_op(st->d,SEND_DISEQC_COMMAND, cmd, 0,
+ &cmd, 0)) {
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int gp8psk_fe_set_tone (struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
+{
+ struct gp8psk_fe_state* state = fe->demodulator_priv;
+
+ if (gp8psk_usb_out_op(state->d,SET_22KHZ_TONE,
+ (tone == SEC_TONE_ON), 0, NULL, 0)) {
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int gp8psk_fe_set_voltage (struct dvb_frontend* fe, fe_sec_voltage_t voltage)
+{
+ struct gp8psk_fe_state* state = fe->demodulator_priv;
+
+ if (gp8psk_usb_out_op(state->d,SET_LNB_VOLTAGE,
+ voltage == SEC_VOLTAGE_18, 0, NULL, 0)) {
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int gp8psk_fe_send_legacy_dish_cmd (struct dvb_frontend* fe, unsigned long sw_cmd)
+{
+ struct gp8psk_fe_state* state = fe->demodulator_priv;
+ u8 cmd = sw_cmd & 0x7f;
+
+ if (gp8psk_usb_out_op(state->d,SET_DN_SWITCH, cmd, 0,
+ NULL, 0)) {
+ return -EINVAL;
+ }
+ if (gp8psk_usb_out_op(state->d,SET_LNB_VOLTAGE, !!(sw_cmd & 0x80),
+ 0, NULL, 0)) {
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static void gp8psk_fe_release(struct dvb_frontend* fe)
+{
+ struct gp8psk_fe_state *state = fe->demodulator_priv;
+ kfree(state);
+}
+
+static struct dvb_frontend_ops gp8psk_fe_ops;
+
+struct dvb_frontend * gp8psk_fe_attach(struct dvb_usb_device *d)
+{
+ struct gp8psk_fe_state *s = kzalloc(sizeof(struct gp8psk_fe_state), GFP_KERNEL);
+ if (s == NULL)
+ goto error;
+
+ s->d = d;
+ memcpy(&s->fe.ops, &gp8psk_fe_ops, sizeof(struct dvb_frontend_ops));
+ s->fe.demodulator_priv = s;
+
+ goto success;
+error:
+ return NULL;
+success:
+ return &s->fe;
+}
+
+
+static struct dvb_frontend_ops gp8psk_fe_ops = {
+ .info = {
+ .name = "Genpix 8psk-USB DVB-S",
+ .type = FE_QPSK,
+ .frequency_min = 950000,
+ .frequency_max = 2150000,
+ .frequency_stepsize = 100,
+ .symbol_rate_min = 1000000,
+ .symbol_rate_max = 45000000,
+ .symbol_rate_tolerance = 500, /* ppm */
+ .caps = FE_CAN_INVERSION_AUTO |
+ 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 = gp8psk_fe_release,
+
+ .init = NULL,
+ .sleep = NULL,
+
+ .set_frontend = gp8psk_fe_set_frontend,
+ .get_frontend = gp8psk_fe_get_frontend,
+ .get_tune_settings = gp8psk_fe_get_tune_settings,
+
+ .read_status = gp8psk_fe_read_status,
+ .read_ber = gp8psk_fe_read_ber,
+ .read_signal_strength = gp8psk_fe_read_signal_strength,
+ .read_snr = gp8psk_fe_read_snr,
+ .read_ucblocks = gp8psk_fe_read_unc_blocks,
+
+ .diseqc_send_master_cmd = gp8psk_fe_send_diseqc_msg,
+ .diseqc_send_burst = gp8psk_fe_send_diseqc_burst,
+ .set_tone = gp8psk_fe_set_tone,
+ .set_voltage = gp8psk_fe_set_voltage,
+ .dishnetwork_send_legacy_command = gp8psk_fe_send_legacy_dish_cmd,
+};