/* * * $Id$ * * Copyright (C) 2005 Mike Isely * Copyright (C) 2004 Aurelien Alleaume * * 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 * */ /* This source file is specifically designed to interface with the cx2584x, in kernels 2.6.16 or newer. */ #include "pvrusb2-cx2584x-v4l.h" #include "pvrusb2-video-v4l.h" #include "pvrusb2-i2c-cmd-v4l2.h" #include "pvrusb2-hdw-internal.h" #include "pvrusb2-debug.h" #include #include #include #include #include struct pvr2_v4l_cx2584x { struct pvr2_i2c_handler handler; struct pvr2_decoder_ctrl ctrl; struct pvr2_i2c_client *client; struct pvr2_hdw *hdw; unsigned long stale_mask; }; static void set_input(struct pvr2_v4l_cx2584x *ctxt) { struct pvr2_hdw *hdw = ctxt->hdw; struct v4l2_routing route; enum cx25840_video_input vid_input; enum cx25840_audio_input aud_input; memset(&route,0,sizeof(route)); switch(hdw->controls[PVR2_CID_INPUT].value) { case PVR2_CVAL_INPUT_TV: vid_input = CX25840_COMPOSITE7; aud_input = CX25840_AUDIO8; break; case PVR2_CVAL_INPUT_COMPOSITE: vid_input = CX25840_COMPOSITE3; aud_input = CX25840_AUDIO_SERIAL; break; case PVR2_CVAL_INPUT_SVIDEO: vid_input = CX25840_SVIDEO1; aud_input = CX25840_AUDIO_SERIAL; break; case PVR2_CVAL_INPUT_RADIO: default: // Just set it to be composite input for now... vid_input = CX25840_COMPOSITE3; aud_input = CX25840_AUDIO_SERIAL; break; } pvr2_trace(PVR2_TRACE_CHIPS,"i2c cx2584x set_input vid=0x%x aud=0x%x", vid_input,aud_input); route.input = (u32)vid_input; pvr2_i2c_client_cmd(ctxt->client,VIDIOC_INT_S_VIDEO_ROUTING,&route); route.input = (u32)aud_input; pvr2_i2c_client_cmd(ctxt->client,VIDIOC_INT_S_AUDIO_ROUTING,&route); } static int check_input(struct pvr2_v4l_cx2584x *ctxt) { struct pvr2_hdw *hdw = ctxt->hdw; return hdw->controls[PVR2_CID_INPUT].dirty != 0; } static void set_audio(struct pvr2_v4l_cx2584x *ctxt) { u32 val; struct pvr2_hdw *hdw = ctxt->hdw; pvr2_trace(PVR2_TRACE_CHIPS,"i2c cx2584x set_audio %d", hdw->controls[PVR2_CID_SRATE].value); switch (hdw->controls[PVR2_CID_SRATE].value) { default: case PVR2_CVAL_SRATE_48: val = 48000; break; case PVR2_CVAL_SRATE_44_1: val = 44100; break; } pvr2_i2c_client_cmd(ctxt->client,VIDIOC_INT_AUDIO_CLOCK_FREQ,&val); } static int check_audio(struct pvr2_v4l_cx2584x *ctxt) { struct pvr2_hdw *hdw = ctxt->hdw; return hdw->controls[PVR2_CID_SRATE].dirty != 0; } struct pvr2_v4l_cx2584x_ops { void (*update)(struct pvr2_v4l_cx2584x *); int (*check)(struct pvr2_v4l_cx2584x *); }; static const struct pvr2_v4l_cx2584x_ops decoder_ops[] = { { .update = set_input, .check = check_input}, { .update = set_audio, .check = check_audio}, }; static void decoder_detach(struct pvr2_v4l_cx2584x *ctxt) { ctxt->client->handler = 0; ctxt->hdw->decoder_ctrl = 0; kfree(ctxt); } static int decoder_check(struct pvr2_v4l_cx2584x *ctxt) { unsigned long msk; unsigned int idx; for (idx = 0; idx < sizeof(decoder_ops)/sizeof(decoder_ops[0]); idx++) { msk = 1 << idx; if (ctxt->stale_mask & msk) continue; if (decoder_ops[idx].check(ctxt)) { ctxt->stale_mask |= msk; } } return ctxt->stale_mask != 0; } static void decoder_update(struct pvr2_v4l_cx2584x *ctxt) { unsigned long msk; unsigned int idx; for (idx = 0; idx < sizeof(decoder_ops)/sizeof(decoder_ops[0]); idx++) { msk = 1 << idx; if (!(ctxt->stale_mask & msk)) continue; ctxt->stale_mask &= ~msk; decoder_ops[idx].update(ctxt); } } static void decoder_enable(struct pvr2_v4l_cx2584x *ctxt,int fl) { pvr2_trace(PVR2_TRACE_CHIPS,"i2c cx25840 decoder_enable(%d)",fl); pvr2_v4l2_cmd_stream(ctxt->client,fl); } static int decoder_detect(struct pvr2_i2c_client *cp) { int ret; /* Attempt to query the decoder - let's see if it will answer */ struct v4l2_queryctrl qc; memset(&qc,0,sizeof(qc)); qc.id = V4L2_CID_BRIGHTNESS; ret = pvr2_i2c_client_cmd(cp,VIDIOC_QUERYCTRL,&qc); return ret == 0; /* Return true if it answered */ } static int decoder_is_tuned(struct pvr2_v4l_cx2584x *ctxt) { struct v4l2_tuner vt; int ret; memset(&vt,0,sizeof(vt)); ret = pvr2_i2c_client_cmd(ctxt->client,VIDIOC_G_TUNER,&vt); if (ret < 0) return -EINVAL; return vt.signal ? 1 : 0; } static unsigned int decoder_describe(struct pvr2_v4l_cx2584x *ctxt, char *buf,unsigned int cnt) { return scnprintf(buf,cnt,"handler: pvrusb2-cx2584x-v4l"); } static void decoder_reset(struct pvr2_v4l_cx2584x *ctxt) { int ret; ret = pvr2_i2c_client_cmd(ctxt->client,VIDIOC_INT_RESET,0); pvr2_trace(PVR2_TRACE_CHIPS,"i2c cx25840 decoder_reset (ret=%d)",ret); } const static struct pvr2_i2c_handler_functions hfuncs = { .detach = (void (*)(void *))decoder_detach, .check = (int (*)(void *))decoder_check, .update = (void (*)(void *))decoder_update, .describe = (unsigned int (*)(void *,char *,unsigned int))decoder_describe, }; int pvr2_i2c_cx2584x_v4l_setup(struct pvr2_hdw *hdw, struct pvr2_i2c_client *cp) { struct pvr2_v4l_cx2584x *ctxt; if (hdw->decoder_ctrl) return 0; if (cp->handler) return 0; if (!decoder_detect(cp)) return 0; ctxt = kmalloc(sizeof(*ctxt),GFP_KERNEL); if (!ctxt) return 0; memset(ctxt,0,sizeof(*ctxt)); ctxt->handler.func_data = ctxt; ctxt->handler.func_table = &hfuncs; ctxt->ctrl.ctxt = ctxt; ctxt->ctrl.detach = (void (*)(void *))decoder_detach; ctxt->ctrl.enable = (void (*)(void *,int))decoder_enable; ctxt->ctrl.tuned = (int (*)(void *))decoder_is_tuned; ctxt->ctrl.force_reset = (void (*)(void*))decoder_reset; ctxt->client = cp; ctxt->hdw = hdw; ctxt->stale_mask = (1 << (sizeof(decoder_ops)/ sizeof(decoder_ops[0]))) - 1; hdw->decoder_ctrl = &ctxt->ctrl; cp->handler = &ctxt->handler; pvr2_trace(PVR2_TRACE_CHIPS,"i2c 0x%x cx2584x 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: *** */