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Based on 3 normalized pattern(s): 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 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 [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] 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 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 [author] [graeme] [gregory] [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema] [hk] [hemahk]@[ti] [com] 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1105 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
79 lines
1.9 KiB
C
79 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* cx18 audio-related functions
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*
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* Derived from ivtv-audio.c
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*
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* Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
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*/
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#include "cx18-driver.h"
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#include "cx18-io.h"
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#include "cx18-cards.h"
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#include "cx18-audio.h"
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#define CX18_AUDIO_ENABLE 0xc72014
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#define CX18_AI1_MUX_MASK 0x30
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#define CX18_AI1_MUX_I2S1 0x00
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#define CX18_AI1_MUX_I2S2 0x10
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#define CX18_AI1_MUX_843_I2S 0x20
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/* Selects the audio input and output according to the current
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settings. */
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int cx18_audio_set_io(struct cx18 *cx)
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{
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const struct cx18_card_audio_input *in;
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u32 u, v;
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int err;
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/* Determine which input to use */
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if (test_bit(CX18_F_I_RADIO_USER, &cx->i_flags))
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in = &cx->card->radio_input;
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else
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in = &cx->card->audio_inputs[cx->audio_input];
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/* handle muxer chips */
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v4l2_subdev_call(cx->sd_extmux, audio, s_routing,
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(u32) in->muxer_input, 0, 0);
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err = cx18_call_hw_err(cx, cx->card->hw_audio_ctrl,
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audio, s_routing, in->audio_input, 0, 0);
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if (err)
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return err;
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/* FIXME - this internal mux should be abstracted to a subdev */
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u = cx18_read_reg(cx, CX18_AUDIO_ENABLE);
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v = u & ~CX18_AI1_MUX_MASK;
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switch (in->audio_input) {
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case CX18_AV_AUDIO_SERIAL1:
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v |= CX18_AI1_MUX_I2S1;
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break;
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case CX18_AV_AUDIO_SERIAL2:
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v |= CX18_AI1_MUX_I2S2;
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break;
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default:
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v |= CX18_AI1_MUX_843_I2S;
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break;
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}
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if (v == u) {
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/* force a toggle of some AI1 MUX control bits */
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u &= ~CX18_AI1_MUX_MASK;
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switch (in->audio_input) {
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case CX18_AV_AUDIO_SERIAL1:
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u |= CX18_AI1_MUX_843_I2S;
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break;
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case CX18_AV_AUDIO_SERIAL2:
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u |= CX18_AI1_MUX_843_I2S;
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break;
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default:
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u |= CX18_AI1_MUX_I2S1;
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break;
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}
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cx18_write_reg_expect(cx, u | 0xb00, CX18_AUDIO_ENABLE,
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u, CX18_AI1_MUX_MASK);
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}
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cx18_write_reg_expect(cx, v | 0xb00, CX18_AUDIO_ENABLE,
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v, CX18_AI1_MUX_MASK);
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return 0;
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}
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