diff options
Diffstat (limited to 'v4l_experimental/pvrusb2/pvrusb2-audio.c')
| -rw-r--r-- | v4l_experimental/pvrusb2/pvrusb2-audio.c | 260 |
1 files changed, 0 insertions, 260 deletions
diff --git a/v4l_experimental/pvrusb2/pvrusb2-audio.c b/v4l_experimental/pvrusb2/pvrusb2-audio.c deleted file mode 100644 index 067a686e0..000000000 --- a/v4l_experimental/pvrusb2/pvrusb2-audio.c +++ /dev/null @@ -1,260 +0,0 @@ -/* - * - * $Id: pvrusb2-audio.c,v 1.9 2006/01/23 07:00:31 mcisely Exp $ - * - * Copyright (C) 2005 Mike Isely <isely@pobox.com> - * Copyright (C) 2004 Aurelien Alleaume <slts@free.fr> - * - * 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 - * - * 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. - * - * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - */ - -#include "compat.h" -#include "pvrusb2-audio.h" -#include "pvrusb2-hdw-internal.h" -#include "pvrusb2-debug.h" -#include "msp3400.h" -#include <linux/videodev.h> -#include <media/audiochip.h> -#include <media/v4l2-common.h> - -struct pvr2_msp3400_handler { - struct pvr2_hdw *hdw; - struct pvr2_i2c_client *client; - struct pvr2_i2c_handler i2c_handler; - struct pvr2_audio_stat astat; - unsigned long stale_mask; -}; - - -/* - - MCI <isely@pobox.com> 10-Mar-2005 - Rather than operate the msp34xx - directly, we rely on the msp3400.ko module to do it for us. We - really have to do this because that $##@!! module is going to attach - itself to us anyway, so we really can't operate the chip ourselves. - Unfortunately msp3400.ko is a real train wreck of a piece of code. - Most of the code below tries to tickle that module in just the right - way to get the results we need. Yuck. msp3400.c should be taken - out back and shot. Based on my reading of the actual chip datasheet - it should in theory be possible to write a far cleaner and simpler - driver than what is currently there right now. - -*/ - -static int xlat_audiomode_to_v4l2(int id) -{ - switch (id) { - case PVR2_CVAL_AUDIOMODE_MONO: - return V4L2_TUNER_MODE_MONO; - case PVR2_CVAL_AUDIOMODE_STEREO: - return V4L2_TUNER_MODE_STEREO; - case PVR2_CVAL_AUDIOMODE_SAP: - return V4L2_TUNER_MODE_SAP; - case PVR2_CVAL_AUDIOMODE_LANG1: - return V4L2_TUNER_MODE_LANG1; - case PVR2_CVAL_AUDIOMODE_LANG2: - return V4L2_TUNER_MODE_LANG2; - } - return V4L2_TUNER_MODE_STEREO; -} - - -/* This function selects the correct audio input source */ -static void set_stereo(struct pvr2_msp3400_handler *ctxt) -{ - struct pvr2_hdw *hdw = ctxt->hdw; - unsigned short sarg = 0; - struct msp_matrix mspm; - - pvr2_trace(PVR2_TRACE_CHIPS,"i2c msp3400 set_stereo"); - - if (hdw->controls[PVR2_CID_INPUT].value == PVR2_CVAL_INPUT_TV) { - struct v4l2_tuner vt; - memset(&vt,0,sizeof(vt)); - vt.audmode = xlat_audiomode_to_v4l2( - hdw->controls[PVR2_CID_AUDIOMODE].value); - pvr2_i2c_client_cmd(ctxt->client,VIDIOC_S_TUNER,&vt); - } - - sarg = AUDIO_TUNER; - switch (hdw->controls[PVR2_CID_INPUT].value) { - case PVR2_CVAL_INPUT_TV: - sarg = AUDIO_TUNER; - break; - case PVR2_CVAL_INPUT_RADIO: - /* Assume that msp34xx also handle FM decoding, in which case - we're still using the tuner. */ - sarg = AUDIO_TUNER; - break; - case PVR2_CVAL_INPUT_SVIDEO: - case PVR2_CVAL_INPUT_COMPOSITE: - sarg = AUDIO_EXTERN; - break; - } - pvr2_i2c_client_cmd(ctxt->client,AUDC_SET_INPUT,&sarg); - - /* The above should have been enough to do the job, however - msp3400.ko does an incomplete job of handling the scart - routing. Really. It doesn't even bother to initialize the - SC1 output at all. So we have to help it here... - Unfortunately this also means that we have include - msp3400.c's header file and it currently isn't in a public - place. Damnit! */ - - mspm.input = SCART_IN1_DA; - switch (hdw->controls[PVR2_CID_INPUT].value) { - case PVR2_CVAL_INPUT_SVIDEO: - case PVR2_CVAL_INPUT_COMPOSITE: - /* Bypass the DSP and just use IN1. In theory we - should be able to permanent just use IN1_DA, but to - do that msp3400.ko should be adjusting the DSP - input SCART routing correctly when doing video in. - Unfortunately that appears not to be the case. I - really hate that module. */ - mspm.input = SCART_IN1; - break; - } - mspm.output = 1; - pvr2_i2c_client_cmd(ctxt->client,MSP_SET_MATRIX,&mspm); -} - - -static int check_stereo(struct pvr2_msp3400_handler *ctxt) -{ - struct pvr2_hdw *hdw = ctxt->hdw; - return ((hdw->controls[PVR2_CID_INPUT].dirty != 0)|| - (hdw->controls[PVR2_CID_AUDIOMODE].dirty != 0)); -} - - -struct pvr2_msp3400_ops { - void (*update)(struct pvr2_msp3400_handler *); - int (*check)(struct pvr2_msp3400_handler *); -}; - - -static const struct pvr2_msp3400_ops msp3400_ops[] = { - { .update = set_stereo, .check = check_stereo}, -}; - - -static int msp3400_check(struct pvr2_msp3400_handler *ctxt) -{ - unsigned long msk; - unsigned int idx; - - for (idx = 0; idx < sizeof(msp3400_ops)/sizeof(msp3400_ops[0]); - idx++) { - msk = 1 << idx; - if (ctxt->stale_mask & msk) continue; - if (msp3400_ops[idx].check(ctxt)) { - ctxt->stale_mask |= msk; - } - } - return ctxt->stale_mask != 0; -} - - -static void msp3400_update(struct pvr2_msp3400_handler *ctxt) -{ - unsigned long msk; - unsigned int idx; - - for (idx = 0; idx < sizeof(msp3400_ops)/sizeof(msp3400_ops[0]); - idx++) { - msk = 1 << idx; - if (!(ctxt->stale_mask & msk)) continue; - ctxt->stale_mask &= ~msk; - msp3400_ops[idx].update(ctxt); - } -} - - -/* This reads back the current volume parameters and signal type */ -static int get_audio_status(struct pvr2_msp3400_handler *ctxt) -{ - struct video_audio vt; - int stat; - - memset(&vt,0,sizeof(vt)); - stat = pvr2_i2c_client_cmd(ctxt->client,VIDIOCGAUDIO,&vt); - if (stat < 0) return stat; - - ctxt->hdw->flag_stereo = (vt.mode & VIDEO_SOUND_STEREO) != 0; - ctxt->hdw->flag_bilingual = - (vt.mode & (VIDEO_SOUND_LANG1|VIDEO_SOUND_LANG2)) != 0; - return 0; -} - - -static void pvr2_msp3400_detach(struct pvr2_msp3400_handler *ctxt) -{ - ctxt->client->handler = 0; - ctxt->hdw->audio_stat = 0; - kfree(ctxt); -} - - -static unsigned int pvr2_msp3400_describe(struct pvr2_msp3400_handler *ctxt, - char *buf,unsigned int cnt) -{ - return scnprintf(buf,cnt,"handler: pvrusb2-audio"); -} - - -const static struct pvr2_i2c_handler_functions msp3400_funcs = { - .detach = (void (*)(void *))pvr2_msp3400_detach, - .check = (int (*)(void *))msp3400_check, - .update = (void (*)(void *))msp3400_update, - .describe = (unsigned int (*)(void *,char *,unsigned int))pvr2_msp3400_describe, -}; - - -int pvr2_i2c_msp3400_setup(struct pvr2_hdw *hdw,struct pvr2_i2c_client *cp) -{ - struct pvr2_msp3400_handler *ctxt; - if (hdw->audio_stat) return 0; - if (cp->handler) return 0; - - ctxt = kmalloc(sizeof(*ctxt),GFP_KERNEL); - if (!ctxt) return 0; - memset(ctxt,0,sizeof(*ctxt)); - - ctxt->i2c_handler.func_data = ctxt; - ctxt->i2c_handler.func_table = &msp3400_funcs; - ctxt->client = cp; - ctxt->hdw = hdw; - ctxt->astat.ctxt = ctxt; - ctxt->astat.status = (int (*)(void *))get_audio_status; - ctxt->astat.detach = (void (*)(void *))pvr2_msp3400_detach; - ctxt->stale_mask = (1 << (sizeof(msp3400_ops)/ - sizeof(msp3400_ops[0]))) - 1; - cp->handler = &ctxt->i2c_handler; - hdw->audio_stat = &ctxt->astat; - pvr2_trace(PVR2_TRACE_CHIPS,"i2c 0x%x msp3400 V4L1 handler set up", - cp->client->addr); - return !0; -} - - -/* - Stuff for Emacs to see, in order to encourage consistent editing style: - *** Local Variables: *** - *** mode: c *** - *** fill-column: 70 *** - *** tab-width: 8 *** - *** c-basic-offset: 8 *** - *** End: *** - */ |