1b285192aSMauro Carvalho Chehab /* 2b285192aSMauro Carvalho Chehab * cx18 audio-related functions 3b285192aSMauro Carvalho Chehab * 4b285192aSMauro Carvalho Chehab * Derived from ivtv-audio.c 5b285192aSMauro Carvalho Chehab * 6b285192aSMauro Carvalho Chehab * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl> 7b285192aSMauro Carvalho Chehab * 8b285192aSMauro Carvalho Chehab * This program is free software; you can redistribute it and/or modify 9b285192aSMauro Carvalho Chehab * it under the terms of the GNU General Public License as published by 10b285192aSMauro Carvalho Chehab * the Free Software Foundation; either version 2 of the License, or 11b285192aSMauro Carvalho Chehab * (at your option) any later version. 12b285192aSMauro Carvalho Chehab * 13b285192aSMauro Carvalho Chehab * This program is distributed in the hope that it will be useful, 14b285192aSMauro Carvalho Chehab * but WITHOUT ANY WARRANTY; without even the implied warranty of 15b285192aSMauro Carvalho Chehab * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16b285192aSMauro Carvalho Chehab * GNU General Public License for more details. 17b285192aSMauro Carvalho Chehab * 18b285192aSMauro Carvalho Chehab * You should have received a copy of the GNU General Public License 19b285192aSMauro Carvalho Chehab * along with this program; if not, write to the Free Software 20b285192aSMauro Carvalho Chehab * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 21b285192aSMauro Carvalho Chehab * 02111-1307 USA 22b285192aSMauro Carvalho Chehab */ 23b285192aSMauro Carvalho Chehab 24b285192aSMauro Carvalho Chehab #include "cx18-driver.h" 25b285192aSMauro Carvalho Chehab #include "cx18-io.h" 26b285192aSMauro Carvalho Chehab #include "cx18-cards.h" 27b285192aSMauro Carvalho Chehab #include "cx18-audio.h" 28b285192aSMauro Carvalho Chehab 29b285192aSMauro Carvalho Chehab #define CX18_AUDIO_ENABLE 0xc72014 30b285192aSMauro Carvalho Chehab #define CX18_AI1_MUX_MASK 0x30 31b285192aSMauro Carvalho Chehab #define CX18_AI1_MUX_I2S1 0x00 32b285192aSMauro Carvalho Chehab #define CX18_AI1_MUX_I2S2 0x10 33b285192aSMauro Carvalho Chehab #define CX18_AI1_MUX_843_I2S 0x20 34b285192aSMauro Carvalho Chehab 35b285192aSMauro Carvalho Chehab /* Selects the audio input and output according to the current 36b285192aSMauro Carvalho Chehab settings. */ 37b285192aSMauro Carvalho Chehab int cx18_audio_set_io(struct cx18 *cx) 38b285192aSMauro Carvalho Chehab { 39b285192aSMauro Carvalho Chehab const struct cx18_card_audio_input *in; 40b285192aSMauro Carvalho Chehab u32 u, v; 41b285192aSMauro Carvalho Chehab int err; 42b285192aSMauro Carvalho Chehab 43b285192aSMauro Carvalho Chehab /* Determine which input to use */ 44b285192aSMauro Carvalho Chehab if (test_bit(CX18_F_I_RADIO_USER, &cx->i_flags)) 45b285192aSMauro Carvalho Chehab in = &cx->card->radio_input; 46b285192aSMauro Carvalho Chehab else 47b285192aSMauro Carvalho Chehab in = &cx->card->audio_inputs[cx->audio_input]; 48b285192aSMauro Carvalho Chehab 49b285192aSMauro Carvalho Chehab /* handle muxer chips */ 50b285192aSMauro Carvalho Chehab v4l2_subdev_call(cx->sd_extmux, audio, s_routing, 51b285192aSMauro Carvalho Chehab (u32) in->muxer_input, 0, 0); 52b285192aSMauro Carvalho Chehab 53b285192aSMauro Carvalho Chehab err = cx18_call_hw_err(cx, cx->card->hw_audio_ctrl, 54b285192aSMauro Carvalho Chehab audio, s_routing, in->audio_input, 0, 0); 55b285192aSMauro Carvalho Chehab if (err) 56b285192aSMauro Carvalho Chehab return err; 57b285192aSMauro Carvalho Chehab 58b285192aSMauro Carvalho Chehab /* FIXME - this internal mux should be abstracted to a subdev */ 59b285192aSMauro Carvalho Chehab u = cx18_read_reg(cx, CX18_AUDIO_ENABLE); 60b285192aSMauro Carvalho Chehab v = u & ~CX18_AI1_MUX_MASK; 61b285192aSMauro Carvalho Chehab switch (in->audio_input) { 62b285192aSMauro Carvalho Chehab case CX18_AV_AUDIO_SERIAL1: 63b285192aSMauro Carvalho Chehab v |= CX18_AI1_MUX_I2S1; 64b285192aSMauro Carvalho Chehab break; 65b285192aSMauro Carvalho Chehab case CX18_AV_AUDIO_SERIAL2: 66b285192aSMauro Carvalho Chehab v |= CX18_AI1_MUX_I2S2; 67b285192aSMauro Carvalho Chehab break; 68b285192aSMauro Carvalho Chehab default: 69b285192aSMauro Carvalho Chehab v |= CX18_AI1_MUX_843_I2S; 70b285192aSMauro Carvalho Chehab break; 71b285192aSMauro Carvalho Chehab } 72b285192aSMauro Carvalho Chehab if (v == u) { 73b285192aSMauro Carvalho Chehab /* force a toggle of some AI1 MUX control bits */ 74b285192aSMauro Carvalho Chehab u &= ~CX18_AI1_MUX_MASK; 75b285192aSMauro Carvalho Chehab switch (in->audio_input) { 76b285192aSMauro Carvalho Chehab case CX18_AV_AUDIO_SERIAL1: 77b285192aSMauro Carvalho Chehab u |= CX18_AI1_MUX_843_I2S; 78b285192aSMauro Carvalho Chehab break; 79b285192aSMauro Carvalho Chehab case CX18_AV_AUDIO_SERIAL2: 80b285192aSMauro Carvalho Chehab u |= CX18_AI1_MUX_843_I2S; 81b285192aSMauro Carvalho Chehab break; 82b285192aSMauro Carvalho Chehab default: 83b285192aSMauro Carvalho Chehab u |= CX18_AI1_MUX_I2S1; 84b285192aSMauro Carvalho Chehab break; 85b285192aSMauro Carvalho Chehab } 86b285192aSMauro Carvalho Chehab cx18_write_reg_expect(cx, u | 0xb00, CX18_AUDIO_ENABLE, 87b285192aSMauro Carvalho Chehab u, CX18_AI1_MUX_MASK); 88b285192aSMauro Carvalho Chehab } 89b285192aSMauro Carvalho Chehab cx18_write_reg_expect(cx, v | 0xb00, CX18_AUDIO_ENABLE, 90b285192aSMauro Carvalho Chehab v, CX18_AI1_MUX_MASK); 91b285192aSMauro Carvalho Chehab return 0; 92b285192aSMauro Carvalho Chehab } 93