275b2e283b
This is the logic that supports switching modes via e.g., echo radio > /sys/class/pvrusb2/sn-*/ctl_input/cur_val. To do the mode switching we need to: a) broadcast AUDC_SET_RADIO and b) issue the CX2341X_ENC_MUTE_VIDEO command to the encoder. The first is done by adding a new pvr2_i2c_op and having it trigger on input change, the second by adding this command in pvr2_encoder_start() and requesting an encoder restart on input change by setting stale_subsys_mask appropriately. The clues about AUDC_SET_RADIO and CX2341X_ENC_MUTE_VIDEO were kindly provided by Hans Verkuil on the pvrusb2 mailing list. The idea to implement mode switching this way (on input change) is due to Mike Isely. Why AUDC_SET_RADIO/VIDIOC_S_STD are used for switching? I can 't be sure, but I think this can be traced to a cornell student being the first to implement radio support in ivtv "as a different standard". I think the rest just evolved from there (it 's in the ivtv ML archives). Signed-off-by: Pantelis Koukousoulas <pakt223@freemail.gr> Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
110 lines
2.6 KiB
C
110 lines
2.6 KiB
C
/*
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*
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* $Id$
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*
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* Copyright (C) 2005 Mike Isely <isely@pobox.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <linux/kernel.h>
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#include "pvrusb2-i2c-core.h"
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#include "pvrusb2-hdw-internal.h"
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#include "pvrusb2-debug.h"
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#include "pvrusb2-i2c-cmd-v4l2.h"
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#include "pvrusb2-audio.h"
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#include "pvrusb2-tuner.h"
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#include "pvrusb2-video-v4l.h"
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#include "pvrusb2-cx2584x-v4l.h"
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#include "pvrusb2-wm8775.h"
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#define trace_i2c(...) pvr2_trace(PVR2_TRACE_I2C,__VA_ARGS__)
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#define OP_STANDARD 0
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#define OP_BCSH 1
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#define OP_VOLUME 2
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#define OP_FREQ 3
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#define OP_AUDIORATE 4
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#define OP_SIZE 5
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#define OP_LOG 6
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#define OP_RADIO 7
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static const struct pvr2_i2c_op * const ops[] = {
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[OP_STANDARD] = &pvr2_i2c_op_v4l2_standard,
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[OP_BCSH] = &pvr2_i2c_op_v4l2_bcsh,
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[OP_VOLUME] = &pvr2_i2c_op_v4l2_volume,
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[OP_FREQ] = &pvr2_i2c_op_v4l2_frequency,
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[OP_SIZE] = &pvr2_i2c_op_v4l2_size,
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[OP_LOG] = &pvr2_i2c_op_v4l2_log,
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[OP_RADIO] = &pvr2_i2c_op_v4l2_radio,
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};
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void pvr2_i2c_probe(struct pvr2_hdw *hdw,struct pvr2_i2c_client *cp)
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{
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int id;
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id = cp->client->driver->id;
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cp->ctl_mask = ((1 << OP_STANDARD) |
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(1 << OP_BCSH) |
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(1 << OP_VOLUME) |
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(1 << OP_FREQ) |
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(1 << OP_SIZE) |
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(1 << OP_LOG) |
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(1 << OP_RADIO));
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if (id == I2C_DRIVERID_MSP3400) {
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if (pvr2_i2c_msp3400_setup(hdw,cp)) {
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return;
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}
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}
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if (id == I2C_DRIVERID_TUNER) {
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if (pvr2_i2c_tuner_setup(hdw,cp)) {
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return;
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}
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}
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if (id == I2C_DRIVERID_CX25840) {
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if (pvr2_i2c_cx2584x_v4l_setup(hdw,cp)) {
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return;
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}
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}
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if (id == I2C_DRIVERID_WM8775) {
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if (pvr2_i2c_wm8775_setup(hdw,cp)) {
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return;
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}
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}
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if (id == I2C_DRIVERID_SAA711X) {
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if (pvr2_i2c_decoder_v4l_setup(hdw,cp)) {
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return;
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}
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}
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}
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const struct pvr2_i2c_op *pvr2_i2c_get_op(unsigned int idx)
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{
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if (idx >= ARRAY_SIZE(ops))
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return NULL;
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return ops[idx];
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}
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/*
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Stuff for Emacs to see, in order to encourage consistent editing style:
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*** Local Variables: ***
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*** mode: c ***
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*** fill-column: 75 ***
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*** tab-width: 8 ***
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*** c-basic-offset: 8 ***
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*** End: ***
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*/
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