/* * * * 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) != 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; } /* 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: *** */