diff options
author | Michael Krufky <mkrufky@linuxtv.org> | 2006-02-26 00:55:22 -0400 |
---|---|---|
committer | Michael Krufky <mkrufky@linuxtv.org> | 2006-02-26 00:55:22 -0400 |
commit | 95b46b95fbbd8226ebaccd556a541aeb061aa980 (patch) | |
tree | 66b4fcce8bafe35621efc9102fcf3a6441551eeb /linux/drivers/media/video/pvrusb2/pvrusb2-audio.c | |
parent | ac4f762f0295fd5ae9bc953d4ec8648eaa763506 (diff) | |
download | mediapointer-dvb-s2-95b46b95fbbd8226ebaccd556a541aeb061aa980.tar.gz mediapointer-dvb-s2-95b46b95fbbd8226ebaccd556a541aeb061aa980.tar.bz2 |
moved pvrusb2 driver into the kernel tree
From: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Diffstat (limited to 'linux/drivers/media/video/pvrusb2/pvrusb2-audio.c')
-rw-r--r-- | linux/drivers/media/video/pvrusb2/pvrusb2-audio.c | 260 |
1 files changed, 260 insertions, 0 deletions
diff --git a/linux/drivers/media/video/pvrusb2/pvrusb2-audio.c b/linux/drivers/media/video/pvrusb2/pvrusb2-audio.c new file mode 100644 index 000000000..7e2fab330 --- /dev/null +++ b/linux/drivers/media/video/pvrusb2/pvrusb2-audio.c @@ -0,0 +1,260 @@ +/* + * + * $Id$ + * + * 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: *** + */ |