[deliverable/linux.git] / drivers / media / video / pvrusb2 / pvrusb2-audio.c

/*
 *
 *  $Id$
 *
 *  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 "pvrusb2-audio.h"
#include "pvrusb2-hdw-internal.h"
#include "pvrusb2-debug.h"
#include <linux/videodev2.h>
#include <media/msp3400.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;
	unsigned long stale_mask;
};


struct routing_scheme {
	const int *def;
	unsigned int cnt;
};

static const int routing_scheme0[] = {
	[PVR2_CVAL_INPUT_TV]        = MSP_INPUT_DEFAULT,
	[PVR2_CVAL_INPUT_RADIO]     = MSP_INPUT(MSP_IN_SCART2,
						MSP_IN_TUNER1,
						MSP_DSP_IN_SCART,
						MSP_DSP_IN_SCART),
	[PVR2_CVAL_INPUT_COMPOSITE] = MSP_INPUT(MSP_IN_SCART1,
						MSP_IN_TUNER1,
						MSP_DSP_IN_SCART,
						MSP_DSP_IN_SCART),
	[PVR2_CVAL_INPUT_SVIDEO]    = MSP_INPUT(MSP_IN_SCART1,
						MSP_IN_TUNER1,
						MSP_DSP_IN_SCART,
						MSP_DSP_IN_SCART),
};

static const struct routing_scheme routing_schemes[] = {
	[PVR2_ROUTING_SCHEME_HAUPPAUGE] = {
		.def = routing_scheme0,
		.cnt = ARRAY_SIZE(routing_scheme0),
	},
};

/* This function selects the correct audio input source */
static void set_stereo(struct pvr2_msp3400_handler *ctxt)
{
	struct pvr2_hdw *hdw = ctxt->hdw;
	struct v4l2_routing route;
	const struct routing_scheme *sp;
	unsigned int sid = hdw->hdw_desc->signal_routing_scheme;

	pvr2_trace(PVR2_TRACE_CHIPS,"i2c msp3400 v4l2 set_stereo");

	if ((sid < ARRAY_SIZE(routing_schemes)) &&
	    ((sp = routing_schemes + sid) != 0) &&
	    (hdw->input_val >= 0) &&
	    (hdw->input_val < sp->cnt)) {
		route.input = sp->def[hdw->input_val];
	} else {
		pvr2_trace(PVR2_TRACE_ERROR_LEGS,
			   "*** WARNING *** i2c msp3400 v4l2 set_stereo:"
			   " Invalid routing scheme (%u) and/or input (%d)",
			   sid,hdw->input_val);
		return;
	}
	route.output = MSP_OUTPUT(MSP_SC_IN_DSP_SCART1);
	pvr2_i2c_client_cmd(ctxt->client,VIDIOC_INT_S_AUDIO_ROUTING,&route);
}


static int check_stereo(struct pvr2_msp3400_handler *ctxt)
{
	struct pvr2_hdw *hdw = ctxt->hdw;
	return hdw->input_dirty;
}


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 < ARRAY_SIZE(msp3400_ops); 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 < ARRAY_SIZE(msp3400_ops); idx++) {
		msk = 1 << idx;
		if (!(ctxt->stale_mask & msk)) continue;
		ctxt->stale_mask &= ~msk;
		msp3400_ops[idx].update(ctxt);
	}
}


static void pvr2_msp3400_detach(struct pvr2_msp3400_handler *ctxt)
{
	ctxt->client->handler = NULL;
	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 v4l2");
}


static const 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 (cp->handler) return 0;

	ctxt = kzalloc(sizeof(*ctxt),GFP_KERNEL);
	if (!ctxt) return 0;

	ctxt->i2c_handler.func_data = ctxt;
	ctxt->i2c_handler.func_table = &msp3400_funcs;
	ctxt->client = cp;
	ctxt->hdw = hdw;
	ctxt->stale_mask = (1 << ARRAY_SIZE(msp3400_ops)) - 1;
	cp->handler = &ctxt->i2c_handler;
	pvr2_trace(PVR2_TRACE_CHIPS,"i2c 0x%x msp3400 V4L2 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: ***
  */
Commit	Line	Data
d855497e MI	1	/*
	2	*
	3	* $Id$
	4	*
	5	* Copyright (C) 2005 Mike Isely <isely@pobox.com>
	6	* Copyright (C) 2004 Aurelien Alleaume <slts@free.fr>
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software
	19	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	20	*
	21	*/
	22
	23	#include "pvrusb2-audio.h"
	24	#include "pvrusb2-hdw-internal.h"
	25	#include "pvrusb2-debug.h"
	26	#include <linux/videodev2.h>
	27	#include <media/msp3400.h>
	28	#include <media/v4l2-common.h>
	29
	30	struct pvr2_msp3400_handler {
	31	struct pvr2_hdw *hdw;
	32	struct pvr2_i2c_client *client;
	33	struct pvr2_i2c_handler i2c_handler;
d855497e MI	34	unsigned long stale_mask;
	35	};
	36
	37
f5174af2 MI	38
	39	struct routing_scheme {
	40	const int *def;
	41	unsigned int cnt;
	42	};
	43
	44	static const int routing_scheme0[] = {
	45	[PVR2_CVAL_INPUT_TV] = MSP_INPUT_DEFAULT,
	46	[PVR2_CVAL_INPUT_RADIO] = MSP_INPUT(MSP_IN_SCART2,
	47	MSP_IN_TUNER1,
	48	MSP_DSP_IN_SCART,
	49	MSP_DSP_IN_SCART),
	50	[PVR2_CVAL_INPUT_COMPOSITE] = MSP_INPUT(MSP_IN_SCART1,
	51	MSP_IN_TUNER1,
	52	MSP_DSP_IN_SCART,
	53	MSP_DSP_IN_SCART),
	54	[PVR2_CVAL_INPUT_SVIDEO] = MSP_INPUT(MSP_IN_SCART1,
	55	MSP_IN_TUNER1,
	56	MSP_DSP_IN_SCART,
	57	MSP_DSP_IN_SCART),
	58	};
	59
	60	static const struct routing_scheme routing_schemes[] = {
	61	[PVR2_ROUTING_SCHEME_HAUPPAUGE] = {
	62	.def = routing_scheme0,
	63	.cnt = ARRAY_SIZE(routing_scheme0),
	64	},
	65	};
	66
d855497e MI	67	/* This function selects the correct audio input source */
	68	static void set_stereo(struct pvr2_msp3400_handler *ctxt)
	69	{
	70	struct pvr2_hdw *hdw = ctxt->hdw;
	71	struct v4l2_routing route;
f5174af2 MI	72	const struct routing_scheme *sp;
f5174af2 MI	73	unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
d855497e MI	74
	75	pvr2_trace(PVR2_TRACE_CHIPS,"i2c msp3400 v4l2 set_stereo");
	76
f5174af2 MI	77	if ((sid < ARRAY_SIZE(routing_schemes)) &&
	78	((sp = routing_schemes + sid) != 0) &&
	79	(hdw->input_val >= 0) &&
	80	(hdw->input_val < sp->cnt)) {
	81	route.input = sp->def[hdw->input_val];
	82	} else {
	83	pvr2_trace(PVR2_TRACE_ERROR_LEGS,
	84	"* WARNING * i2c msp3400 v4l2 set_stereo:"
	85	" Invalid routing scheme (%u) and/or input (%d)",
	86	sid,hdw->input_val);
	87	return;
d855497e	88	}
f5174af2	89	route.output = MSP_OUTPUT(MSP_SC_IN_DSP_SCART1);
d855497e MI	90	pvr2_i2c_client_cmd(ctxt->client,VIDIOC_INT_S_AUDIO_ROUTING,&route);
	91	}
	92
	93
	94	static int check_stereo(struct pvr2_msp3400_handler *ctxt)
	95	{
	96	struct pvr2_hdw *hdw = ctxt->hdw;
606cf9ca	97	return hdw->input_dirty;
d855497e MI	98	}
	99
	100
	101	struct pvr2_msp3400_ops {
	102	void (update)(struct pvr2_msp3400_handler );
	103	int (check)(struct pvr2_msp3400_handler );
	104	};
	105
	106
	107	static const struct pvr2_msp3400_ops msp3400_ops[] = {
	108	{ .update = set_stereo, .check = check_stereo},
	109	};
	110
	111
	112	static int msp3400_check(struct pvr2_msp3400_handler *ctxt)
	113	{
	114	unsigned long msk;
	115	unsigned int idx;
	116
27c7b710	117	for (idx = 0; idx < ARRAY_SIZE(msp3400_ops); idx++) {
d855497e MI	118	msk = 1 << idx;
	119	if (ctxt->stale_mask & msk) continue;
	120	if (msp3400_ops[idx].check(ctxt)) {
	121	ctxt->stale_mask \|= msk;
	122	}
	123	}
	124	return ctxt->stale_mask != 0;
	125	}
	126
	127
	128	static void msp3400_update(struct pvr2_msp3400_handler *ctxt)
	129	{
	130	unsigned long msk;
	131	unsigned int idx;
	132
27c7b710	133	for (idx = 0; idx < ARRAY_SIZE(msp3400_ops); idx++) {
d855497e MI	134	msk = 1 << idx;
	135	if (!(ctxt->stale_mask & msk)) continue;
	136	ctxt->stale_mask &= ~msk;
	137	msp3400_ops[idx].update(ctxt);
	138	}
	139	}
	140
	141
d855497e MI	142	static void pvr2_msp3400_detach(struct pvr2_msp3400_handler *ctxt)
d855497e MI	143	{
a0fd1cb1	144	ctxt->client->handler = NULL;
d855497e MI	145	kfree(ctxt);
	146	}
	147
	148
	149	static unsigned int pvr2_msp3400_describe(struct pvr2_msp3400_handler *ctxt,
	150	char *buf,unsigned int cnt)
	151	{
	152	return scnprintf(buf,cnt,"handler: pvrusb2-audio v4l2");
	153	}
	154
	155
c5a69d57	156	static const struct pvr2_i2c_handler_functions msp3400_funcs = {
d855497e MI	157	.detach = (void ()(void ))pvr2_msp3400_detach,
	158	.check = (int ()(void ))msp3400_check,
	159	.update = (void ()(void ))msp3400_update,
	160	.describe = (unsigned int ()(void ,char *,unsigned int))pvr2_msp3400_describe,
	161	};
	162
	163
	164	int pvr2_i2c_msp3400_setup(struct pvr2_hdw hdw,struct pvr2_i2c_client cp)
	165	{
	166	struct pvr2_msp3400_handler *ctxt;
d855497e MI	167	if (cp->handler) return 0;
d855497e MI	168
ca545f7c	169	ctxt = kzalloc(sizeof(*ctxt),GFP_KERNEL);
d855497e	170	if (!ctxt) return 0;
d855497e MI	171
	172	ctxt->i2c_handler.func_data = ctxt;
	173	ctxt->i2c_handler.func_table = &msp3400_funcs;
	174	ctxt->client = cp;
	175	ctxt->hdw = hdw;
27c7b710	176	ctxt->stale_mask = (1 << ARRAY_SIZE(msp3400_ops)) - 1;
d855497e	177	cp->handler = &ctxt->i2c_handler;
d855497e MI	178	pvr2_trace(PVR2_TRACE_CHIPS,"i2c 0x%x msp3400 V4L2 handler set up",
	179	cp->client->addr);
	180	return !0;
	181	}
	182
	183
	184	/*
	185	Stuff for Emacs to see, in order to encourage consistent editing style:
	186	* Local Variables: *
	187	* mode: c *
	188	* fill-column: 70 *
	189	* tab-width: 8 *
	190	* c-basic-offset: 8 *
	191	* End: *
	192	*/