[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / media / video / pvrusb2 / pvrusb2-audio.c

/*
 *
 *
 *  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 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),
	},
};


struct pvr2_msp3400_handler {
	struct pvr2_hdw *hdw;
	struct pvr2_i2c_client *client;
	struct pvr2_i2c_handler i2c_handler;
	unsigned long stale_mask;
};


/* 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) != NULL) &&
	    (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;
}

void pvr2_msp3400_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
{
	if (hdw->input_dirty) {
		struct v4l2_routing route;
		const struct routing_scheme *sp;
		unsigned int sid = hdw->hdw_desc->signal_routing_scheme;

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

		if ((sid < ARRAY_SIZE(routing_schemes)) &&
		    ((sp = routing_schemes + sid) != NULL) &&
		    (hdw->input_val >= 0) &&
		    (hdw->input_val < sp->cnt)) {
			route.input = sp->def[hdw->input_val];
		} else {
			pvr2_trace(PVR2_TRACE_ERROR_LEGS,
				   "*** WARNING *** subdev msp3400 set_input:"
				   " Invalid routing scheme (%u)"
				   " and/or input (%d)",
				   sid, hdw->input_val);
			return;
		}
		route.output = MSP_OUTPUT(MSP_SC_IN_DSP_SCART1);
		sd->ops->audio->s_routing(sd, &route);
	}
}

/*
  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	/*
d855497e MI	2	*
d855497e MI	3	*
	4	* Copyright (C) 2005 Mike Isely <isely@pobox.com>
	5	* Copyright (C) 2004 Aurelien Alleaume <slts@free.fr>
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation; either version 2 of the License
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, write to the Free Software
	18	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	19	*
	20	*/
	21
	22	#include "pvrusb2-audio.h"
	23	#include "pvrusb2-hdw-internal.h"
	24	#include "pvrusb2-debug.h"
	25	#include <linux/videodev2.h>
	26	#include <media/msp3400.h>
	27	#include <media/v4l2-common.h>
	28
6063a442	29
f5174af2 MI	30	struct routing_scheme {
	31	const int *def;
	32	unsigned int cnt;
	33	};
	34
	35	static const int routing_scheme0[] = {
	36	[PVR2_CVAL_INPUT_TV] = MSP_INPUT_DEFAULT,
	37	[PVR2_CVAL_INPUT_RADIO] = MSP_INPUT(MSP_IN_SCART2,
	38	MSP_IN_TUNER1,
	39	MSP_DSP_IN_SCART,
	40	MSP_DSP_IN_SCART),
	41	[PVR2_CVAL_INPUT_COMPOSITE] = MSP_INPUT(MSP_IN_SCART1,
	42	MSP_IN_TUNER1,
	43	MSP_DSP_IN_SCART,
	44	MSP_DSP_IN_SCART),
	45	[PVR2_CVAL_INPUT_SVIDEO] = MSP_INPUT(MSP_IN_SCART1,
	46	MSP_IN_TUNER1,
	47	MSP_DSP_IN_SCART,
	48	MSP_DSP_IN_SCART),
	49	};
	50
	51	static const struct routing_scheme routing_schemes[] = {
	52	[PVR2_ROUTING_SCHEME_HAUPPAUGE] = {
	53	.def = routing_scheme0,
	54	.cnt = ARRAY_SIZE(routing_scheme0),
	55	},
	56	};
	57
76891d65 MI	58
	59	struct pvr2_msp3400_handler {
	60	struct pvr2_hdw *hdw;
	61	struct pvr2_i2c_client *client;
	62	struct pvr2_i2c_handler i2c_handler;
	63	unsigned long stale_mask;
	64	};
	65
	66
	67
	68
d855497e MI	69	/* This function selects the correct audio input source */
	70	static void set_stereo(struct pvr2_msp3400_handler *ctxt)
	71	{
	72	struct pvr2_hdw *hdw = ctxt->hdw;
	73	struct v4l2_routing route;
f5174af2 MI	74	const struct routing_scheme *sp;
f5174af2 MI	75	unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
d855497e MI	76
	77	pvr2_trace(PVR2_TRACE_CHIPS,"i2c msp3400 v4l2 set_stereo");
	78
f5174af2	79	if ((sid < ARRAY_SIZE(routing_schemes)) &&
a6a3a17b	80	((sp = routing_schemes + sid) != NULL) &&
f5174af2 MI	81	(hdw->input_val >= 0) &&
	82	(hdw->input_val < sp->cnt)) {
	83	route.input = sp->def[hdw->input_val];
	84	} else {
	85	pvr2_trace(PVR2_TRACE_ERROR_LEGS,
	86	"* WARNING * i2c msp3400 v4l2 set_stereo:"
	87	" Invalid routing scheme (%u) and/or input (%d)",
	88	sid,hdw->input_val);
	89	return;
d855497e	90	}
f5174af2	91	route.output = MSP_OUTPUT(MSP_SC_IN_DSP_SCART1);
d855497e MI	92	pvr2_i2c_client_cmd(ctxt->client,VIDIOC_INT_S_AUDIO_ROUTING,&route);
	93	}
	94
	95
	96	static int check_stereo(struct pvr2_msp3400_handler *ctxt)
	97	{
	98	struct pvr2_hdw *hdw = ctxt->hdw;
606cf9ca	99	return hdw->input_dirty;
d855497e MI	100	}
	101
	102
	103	struct pvr2_msp3400_ops {
	104	void (update)(struct pvr2_msp3400_handler );
	105	int (check)(struct pvr2_msp3400_handler );
	106	};
	107
	108
	109	static const struct pvr2_msp3400_ops msp3400_ops[] = {
	110	{ .update = set_stereo, .check = check_stereo},
	111	};
	112
	113
	114	static int msp3400_check(struct pvr2_msp3400_handler *ctxt)
	115	{
	116	unsigned long msk;
	117	unsigned int idx;
	118
27c7b710	119	for (idx = 0; idx < ARRAY_SIZE(msp3400_ops); idx++) {
d855497e MI	120	msk = 1 << idx;
	121	if (ctxt->stale_mask & msk) continue;
	122	if (msp3400_ops[idx].check(ctxt)) {
	123	ctxt->stale_mask \|= msk;
	124	}
	125	}
	126	return ctxt->stale_mask != 0;
	127	}
	128
	129
	130	static void msp3400_update(struct pvr2_msp3400_handler *ctxt)
	131	{
	132	unsigned long msk;
	133	unsigned int idx;
	134
27c7b710	135	for (idx = 0; idx < ARRAY_SIZE(msp3400_ops); idx++) {
d855497e MI	136	msk = 1 << idx;
	137	if (!(ctxt->stale_mask & msk)) continue;
	138	ctxt->stale_mask &= ~msk;
	139	msp3400_ops[idx].update(ctxt);
	140	}
	141	}
	142
	143
d855497e MI	144	static void pvr2_msp3400_detach(struct pvr2_msp3400_handler *ctxt)
d855497e MI	145	{
a0fd1cb1	146	ctxt->client->handler = NULL;
d855497e MI	147	kfree(ctxt);
	148	}
	149
	150
	151	static unsigned int pvr2_msp3400_describe(struct pvr2_msp3400_handler *ctxt,
	152	char *buf,unsigned int cnt)
	153	{
	154	return scnprintf(buf,cnt,"handler: pvrusb2-audio v4l2");
	155	}
	156
	157
c5a69d57	158	static const struct pvr2_i2c_handler_functions msp3400_funcs = {
d855497e MI	159	.detach = (void ()(void ))pvr2_msp3400_detach,
	160	.check = (int ()(void ))msp3400_check,
	161	.update = (void ()(void ))msp3400_update,
	162	.describe = (unsigned int ()(void ,char *,unsigned int))pvr2_msp3400_describe,
	163	};
	164
	165
	166	int pvr2_i2c_msp3400_setup(struct pvr2_hdw hdw,struct pvr2_i2c_client cp)
	167	{
	168	struct pvr2_msp3400_handler *ctxt;
d855497e MI	169	if (cp->handler) return 0;
d855497e MI	170
ca545f7c	171	ctxt = kzalloc(sizeof(*ctxt),GFP_KERNEL);
d855497e	172	if (!ctxt) return 0;
d855497e MI	173
	174	ctxt->i2c_handler.func_data = ctxt;
	175	ctxt->i2c_handler.func_table = &msp3400_funcs;
	176	ctxt->client = cp;
	177	ctxt->hdw = hdw;
27c7b710	178	ctxt->stale_mask = (1 << ARRAY_SIZE(msp3400_ops)) - 1;
d855497e	179	cp->handler = &ctxt->i2c_handler;
d855497e MI	180	pvr2_trace(PVR2_TRACE_CHIPS,"i2c 0x%x msp3400 V4L2 handler set up",
	181	cp->client->addr);
	182	return !0;
	183	}
	184
76891d65 MI	185	void pvr2_msp3400_subdev_update(struct pvr2_hdw hdw, struct v4l2_subdev sd)
	186	{
	187	if (hdw->input_dirty) {
	188	struct v4l2_routing route;
	189	const struct routing_scheme *sp;
	190	unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
	191
	192	pvr2_trace(PVR2_TRACE_CHIPS, "subdev msp3400 v4l2 set_stereo");
	193
	194	if ((sid < ARRAY_SIZE(routing_schemes)) &&
	195	((sp = routing_schemes + sid) != NULL) &&
	196	(hdw->input_val >= 0) &&
	197	(hdw->input_val < sp->cnt)) {
	198	route.input = sp->def[hdw->input_val];
	199	} else {
	200	pvr2_trace(PVR2_TRACE_ERROR_LEGS,
	201	"* WARNING * subdev msp3400 set_input:"
	202	" Invalid routing scheme (%u)"
	203	" and/or input (%d)",
	204	sid, hdw->input_val);
	205	return;
	206	}
	207	route.output = MSP_OUTPUT(MSP_SC_IN_DSP_SCART1);
	208	sd->ops->audio->s_routing(sd, &route);
	209	}
	210	}
acd92d40	211
d855497e MI	212	/*
	213	Stuff for Emacs to see, in order to encourage consistent editing style:
	214	* Local Variables: *
	215	* mode: c *
	216	* fill-column: 70 *
	217	* tab-width: 8 *
	218	* c-basic-offset: 8 *
	219	* End: *
	220	*/