V4L/DVB (11022): zoran/bt819: use new notify functionality.

Bt819 needs the parent driver to drive a GPIO pin low and high in order to
reset its fifo. Use the new notify callback for this.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/bt819.c

@@ -32,13 +32,14 @@
 #include <linux/types.h>
 #include <linux/ioctl.h>
 #include <linux/delay.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
 #include <linux/i2c.h>
 #include <linux/i2c-id.h>
 #include <linux/videodev2.h>
 #include <media/v4l2-device.h>
 #include <media/v4l2-chip-ident.h>
 #include <media/v4l2-i2c-drv.h>
+#include <media/bt819.h>
 
 MODULE_DESCRIPTION("Brooktree-819 video decoder driver");
 MODULE_AUTHOR("Mike Bernson & Dave Perks");
@@ -250,7 +251,11 @@ static int bt819_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
 
 	v4l2_dbg(1, debug, sd, "set norm %llx\n", (unsigned long long)std);
 
+	if (sd->v4l2_dev == NULL || sd->v4l2_dev->notify == NULL)
+		v4l2_err(sd, "no notify found!\n");
+
 	if (std & V4L2_STD_NTSC) {
+		v4l2_subdev_notify(sd, BT819_FIFO_RESET_LOW, 0);
 		bt819_setbit(decoder, 0x01, 0, 1);
 		bt819_setbit(decoder, 0x01, 1, 0);
 		bt819_setbit(decoder, 0x01, 5, 0);
@@ -259,6 +264,7 @@ static int bt819_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
 		/* bt819_setbit(decoder, 0x1a,  5, 1); */
 		timing = &timing_data[1];
 	} else if (std & V4L2_STD_PAL) {
+		v4l2_subdev_notify(sd, BT819_FIFO_RESET_LOW, 0);
 		bt819_setbit(decoder, 0x01, 0, 1);
 		bt819_setbit(decoder, 0x01, 1, 1);
 		bt819_setbit(decoder, 0x01, 5, 1);
@@ -283,6 +289,7 @@ static int bt819_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
 	bt819_write(decoder, 0x08, (timing->hscale >> 8) & 0xff);
 	bt819_write(decoder, 0x09, timing->hscale & 0xff);
 	decoder->norm = std;
+	v4l2_subdev_notify(sd, BT819_FIFO_RESET_HIGH, 0);
 	return 0;
 }
 
@@ -295,7 +302,11 @@ static int bt819_s_routing(struct v4l2_subdev *sd, const struct v4l2_routing *ro
 	if (route->input < 0 || route->input > 7)
 		return -EINVAL;
 
+	if (sd->v4l2_dev == NULL || sd->v4l2_dev->notify == NULL)
+		v4l2_err(sd, "no notify found!\n");
+
 	if (decoder->input != route->input) {
+		v4l2_subdev_notify(sd, BT819_FIFO_RESET_LOW, 0);
 		decoder->input = route->input;
 		/* select mode */
 		if (decoder->input == 0) {
@@ -305,6 +316,7 @@ static int bt819_s_routing(struct v4l2_subdev *sd, const struct v4l2_routing *ro
 			bt819_setbit(decoder, 0x0b, 6, 1);
 			bt819_setbit(decoder, 0x1a, 1, 0);
 		}
+		v4l2_subdev_notify(sd, BT819_FIFO_RESET_HIGH, 0);
 	}
 	return 0;
 }

drivers/media/video/zoran/zoran_card.c

@@ -39,7 +39,6 @@
 #include <linux/i2c.h>
 #include <linux/i2c-algo-bit.h>
 #include <linux/videodev2.h>
-#include <media/v4l2-common.h>
 #include <linux/spinlock.h>
 #include <linux/sem.h>
 #include <linux/kmod.h>
@@ -48,8 +47,9 @@
 #include <linux/pci.h>
 #include <linux/interrupt.h>
 #include <linux/mutex.h>
-
-#include <asm/io.h>
+#include <linux/io.h>
+#include <media/v4l2-common.h>
+#include <media/bt819.h>
 
 #include "videocodec.h"
 #include "zoran.h"
@@ -1196,6 +1196,19 @@ zoran_setup_videocodec (struct zoran *zr,
 	return m;
 }
 
+static int zoran_subdev_notify(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
+{
+	struct zoran *zr = to_zoran(sd->v4l2_dev);
+
+	/* Bt819 needs to reset its FIFO buffer using #FRST pin and
+	   LML33 card uses GPIO(7) for that. */
+	if (cmd == BT819_FIFO_RESET_LOW)
+		GPIO(zr, 7, 0);
+	else if (cmd == BT819_FIFO_RESET_HIGH)
+		GPIO(zr, 7, 1);
+	return 0;
+}
+
 /*
  *   Scan for a Buz card (actually for the PCI controller ZR36057),
  *   request the irq and map the io memory
@@ -1226,6 +1239,7 @@ static int __devinit zoran_probe(struct pci_dev *pdev,
 			ZORAN_NAME, __func__);
 		return -ENOMEM;
 	}
+	zr->v4l2_dev.notify = zoran_subdev_notify;
 	if (v4l2_device_register(&pdev->dev, &zr->v4l2_dev))
 		goto zr_free_mem;
 	zr->pci_dev = pdev;

drivers/media/video/zoran/zoran_device.c

@@ -1584,8 +1584,8 @@ zoran_init_hardware (struct zoran *zr)
 	route.input = zr->card.input[zr->input].muxsel;
 
 	decoder_call(zr, core, init, 0);
-	decoder_s_std(zr, zr->norm);
-	decoder_s_routing(zr, &route);
+	decoder_call(zr, tuner, s_std, zr->norm);
+	decoder_call(zr, video, s_routing, &route);
 
 	encoder_call(zr, core, init, 0);
 	encoder_call(zr, video, s_std_output, zr->norm);
@@ -1650,35 +1650,3 @@ zr36057_init_vfe (struct zoran *zr)
 		reg |= ZR36057_VDCR_Triton;
 	btwrite(reg, ZR36057_VDCR);
 }
-
-/*
- * Interface to decoder and encoder chips using i2c bus
- */
-
-int decoder_s_std(struct zoran *zr, v4l2_std_id std)
-{
-	int res;
-
-	/* Bt819 needs to reset its FIFO buffer using #FRST pin and
-	   LML33 card uses GPIO(7) for that. */
-	if (zr->card.type == LML33)
-		GPIO(zr, 7, 0);
-	res = decoder_call(zr, tuner, s_std, std);
-	if (zr->card.type == LML33)
-		GPIO(zr, 7, 1); /* Pull #FRST high. */
-	return res;
-}
-
-int decoder_s_routing(struct zoran *zr, struct v4l2_routing *route)
-{
-	int res;
-
-	/* Bt819 needs to reset its FIFO buffer using #FRST pin and
-	   LML33 card uses GPIO(7) for that. */
-	if (zr->card.type == LML33)
-		GPIO(zr, 7, 0);
-	res = decoder_call(zr, video, s_routing, route);
-	if (zr->card.type == LML33)
-		GPIO(zr, 7, 1); /* Pull #FRST high. */
-	return res;
-}

drivers/media/video/zoran/zoran_device.h

@@ -92,7 +92,4 @@ extern int pass_through;
 #define encoder_call(zr, o, f, args...) \
 	v4l2_subdev_call(zr->encoder, o, f, ##args)
 
-int decoder_s_std(struct zoran *zr, v4l2_std_id std);
-int decoder_s_routing(struct zoran *zr, struct v4l2_routing *route);
-
 #endif				/* __ZORAN_DEVICE_H__ */

drivers/media/video/zoran/zoran_driver.c

@@ -1449,7 +1449,7 @@ zoran_set_norm (struct zoran *zr,
 		v4l2_std_id std = 0;
 
 		decoder_call(zr, video, querystd, &std);
-		decoder_s_std(zr, std);
+		decoder_call(zr, tuner, s_std, std);
 
 		/* let changes come into effect */
 		ssleep(2);
@@ -1461,7 +1461,7 @@ zoran_set_norm (struct zoran *zr,
 				"%s: %s - no norm detected\n",
 				ZR_DEVNAME(zr), __func__);
 			/* reset norm */
-			decoder_s_std(zr, zr->norm);
+			decoder_call(zr, tuner, s_std, zr->norm);
 			return -EIO;
 		}
 
@@ -1480,7 +1480,7 @@ zoran_set_norm (struct zoran *zr,
 	if (on)
 		zr36057_overlay(zr, 0);
 
-	decoder_s_std(zr, norm);
+	decoder_call(zr, tuner, s_std, norm);
 	encoder_call(zr, video, s_std_output, norm);
 
 	if (on)
@@ -1522,7 +1522,7 @@ zoran_set_input (struct zoran *zr,
 	route.input = zr->card.input[input].muxsel;
 	zr->input = input;
 
-	decoder_s_routing(zr, &route);
+	decoder_call(zr, video, s_routing, &route);
 
 	return 0;
 }
@@ -1775,7 +1775,7 @@ jpgreqbuf_unlock_and_return:
 			goto gstat_unlock_and_return;
 		}
 
-		decoder_s_routing(zr, &route);
+		decoder_call(zr, video, s_routing, &route);
 
 		/* sleep 1 second */
 		ssleep(1);
@@ -1786,7 +1786,7 @@ jpgreqbuf_unlock_and_return:
 
 		/* restore previous input and norm */
 		route.input = zr->card.input[zr->input].muxsel;
-		decoder_s_routing(zr, &route);
+		decoder_call(zr, video, s_routing, &route);
 gstat_unlock_and_return:
 		mutex_unlock(&zr->resource_lock);
 

include/media/bt819.h

+/*
+    bt819.h - bt819 notifications
+
+    Copyright (C) 2009 Hans Verkuil (hverkuil@xs4all.nl)
+
+    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, or
+    (at your option) any later version.
+
+    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., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#ifndef _BT819_H_
+#define _BT819_H_
+
+#include <linux/ioctl.h>
+
+/* v4l2_device notifications. */
+
+/* Needed to reset the FIFO buffer when changing the input
+   or the video standard. */
+#define BT819_FIFO_RESET_LOW 	_IO('b', 0)
+#define BT819_FIFO_RESET_HIGH 	_IO('b', 1)
+
+#endif