V4L/DVB (4228a): pvrusb2 to kernel 2.6.18
Implement V4L2 driver for the Hauppauge PVR USB2 TV tuner.
The Hauppauge PVR USB2 is a USB connected TV tuner with an embedded
cx23416 hardware MPEG2 encoder. There are two major variants of this
device; this driver handles both. Any V4L2 application which
understands MPEG2 video stream data should be able to work with this
device.
Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/pvrusb2/pvrusb2-cx2584x-v4l.c b/drivers/media/video/pvrusb2/pvrusb2-cx2584x-v4l.c
new file mode 100644
index 0000000..47e7f5d
--- /dev/null
+++ b/drivers/media/video/pvrusb2/pvrusb2-cx2584x-v4l.c
@@ -0,0 +1,276 @@
+/*
+ *
+ * $Id$
+ *
+ * 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
+ *
+ */
+
+/*
+
+ 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 <media/cx25840.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-common.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+
+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->input_val) {
+ 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->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->srate_val);
+ switch (hdw->srate_val) {
+ 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->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: ***
+ */