Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 79 insertions, 0 deletions

diff --git a/drivers/isdn/hardware/eicon/capidtmf.h b/drivers/isdn/hardware/eicon/capidtmf.h
new file mode 100644
index 000000000..0a9cf59bb
--- /dev/null
+++ b/drivers/isdn/hardware/eicon/capidtmf.h
@@ -0,0 +1,79 @@
+
+/*
+ *
+ Copyright (c) Eicon Networks, 2002.
+ *
+ This source file is supplied for the use with
+ Eicon Networks range of DIVA Server Adapters.
+ *
+ Eicon File Revision :    2.1
+ *
+ 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, or (at your option)
+ any later version.
+ *
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY OF ANY KIND WHATSOEVER INCLUDING ANY
+ 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.
+ *
+ */
+#ifndef CAPIDTMF_H_
+#define CAPIDTMF_H_
+/*---------------------------------------------------------------------------*/
+/*---------------------------------------------------------------------------*/
+#define CAPIDTMF_TONE_GROUP_COUNT            2
+#define CAPIDTMF_LOW_GROUP_FREQUENCIES       4
+#define CAPIDTMF_HIGH_GROUP_FREQUENCIES      4
+#define DSPDTMF_RX_SENSITIVITY_LOW_DEFAULT	50	/* -52 dBm */
+#define DSPDTMF_RX_SENSITIVITY_HIGH_DEFAULT	50	/* -52 dBm */
+#define DSPDTMF_RX_HIGH_EXCEEDING_LOW_DEFAULT	10	/* dB */
+#define DSPDTMF_RX_LOW_EXCEEDING_HIGH_DEFAULT	10	/* dB */
+#define DSPDTMF_RX_HARMONICS_SEL_DEFAULT	12	/* dB */
+#define CAPIDTMF_RECV_BASE_FREQUENCY_COUNT   (CAPIDTMF_LOW_GROUP_FREQUENCIES + CAPIDTMF_HIGH_GROUP_FREQUENCIES)
+#define CAPIDTMF_RECV_GUARD_FREQUENCY_COUNT  8
+#define CAPIDTMF_RECV_TOTAL_FREQUENCY_COUNT  (CAPIDTMF_RECV_BASE_FREQUENCY_COUNT + CAPIDTMF_RECV_GUARD_FREQUENCY_COUNT)
+#define CAPIDTMF_RECV_POSITIVE_COEFF_COUNT   16
+#define CAPIDTMF_RECV_NEGATIVE_COEFF_COUNT   (CAPIDTMF_RECV_TOTAL_FREQUENCY_COUNT - CAPIDTMF_RECV_POSITIVE_COEFF_COUNT)
+#define CAPIDTMF_RECV_ACCUMULATE_CYCLES      205
+#define CAPIDTMF_RECV_FUNDAMENTAL_OFFSET     (0xff35L * 2)
+#define CAPIDTMF_RECV_FUNDAMENTAL_DECREMENT  (0x0028L * 2)
+#define CAPIDTMF_RECV_DIGIT_BUFFER_SIZE      32
+#define CAPIDTMF_RECV_STATE_IDLE             0x00
+#define CAPIDTMF_RECV_STATE_DTMF_ACTIVE      0x01
+typedef struct tag_capidtmf_recv_state
+{
+	byte digit_buffer[CAPIDTMF_RECV_DIGIT_BUFFER_SIZE];
+	word digit_write_pos;
+	word digit_read_pos;
+	word indication_state;
+	word indication_state_ack;
+	long goertzel_buffer[2][CAPIDTMF_RECV_TOTAL_FREQUENCY_COUNT];
+	word min_gap_duration;
+	word min_digit_duration;
+	word cycle_counter;
+	word current_digit_on_time;
+	word current_digit_off_time;
+	byte current_digit_value;
+	byte state;
+} t_capidtmf_recv_state;
+typedef struct tag_capidtmf_state
+{
+	byte ulaw;
+	t_capidtmf_recv_state recv;
+} t_capidtmf_state;
+word capidtmf_recv_indication(t_capidtmf_state *p_state, byte *buffer);
+void capidtmf_recv_block(t_capidtmf_state *p_state, byte *buffer, word length);
+void capidtmf_init(t_capidtmf_state *p_state, byte ulaw);
+void capidtmf_recv_enable(t_capidtmf_state *p_state, word min_digit_duration, word min_gap_duration);
+void capidtmf_recv_disable(t_capidtmf_state *p_state);
+#define capidtmf_indication(p_state, buffer)  (((p_state)->recv.indication_state != (p_state)->recv.indication_state_ack) ? capidtmf_recv_indication(p_state, buffer) : 0)
+#define capidtmf_recv_process_block(p_state, buffer, length)  { if ((p_state)->recv.state != CAPIDTMF_RECV_STATE_IDLE) capidtmf_recv_block(p_state, buffer, length); }
+/*---------------------------------------------------------------------------*/
+/*---------------------------------------------------------------------------*/
+#endif