staging: easycap: add ALSA support

This is necessary because some distributions are disabling OSS entirely.
Signed-off-by: Mike Thomas <rmthomas@sciolus.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/easycap/Kconfig

 config EASYCAP
 	tristate "EasyCAP USB ID 05e1:0408 support"
-	depends on USB && VIDEO_DEV
+	depends on USB && VIDEO_DEV && SND
 
 	---help---
 	  This is an integrated audio/video driver for EasyCAP cards with

drivers/staging/easycap/Makefile

+easycap-objs      := easycap_main.o easycap_low.o easycap_sound.o \
+		     easycap_ioctl.o easycap_settings.o easycap_testcard.o
 
-obj-$(CONFIG_EASYCAP)	+= easycap.o
-
-easycap-y	:= easycap_main.o easycap_low.o easycap_sound.o
-easycap-y	+= easycap_ioctl.o easycap_settings.o
-easycap-y	+= easycap_testcard.o
+obj-$(CONFIG_EASYCAP)       += easycap.o
 
 ccflags-y := -Wall
-# Impose all or none of the following:
 ccflags-y += -DEASYCAP_IS_VIDEODEV_CLIENT
 ccflags-y += -DEASYCAP_NEEDS_V4L2_DEVICE_H
 ccflags-y += -DEASYCAP_NEEDS_V4L2_FOPS
 ccflags-y += -DEASYCAP_NEEDS_UNLOCKED_IOCTL
+ccflags-y += -DEASYCAP_NEEDS_ALSA
+ccflags-y += -DEASYCAP_NEEDS_CARD_CREATE
 

drivers/staging/easycap/easycap.h

@@ -34,6 +34,8 @@
  *                EASYCAP_NEEDS_V4L2_DEVICE_H
  *                EASYCAP_NEEDS_V4L2_FOPS
  *                EASYCAP_NEEDS_UNLOCKED_IOCTL
+ *                EASYCAP_NEEDS_ALSA
+ *                EASYCAP_SILENT
  *
  *  IF REQUIRED THEY MUST BE EXTERNALLY DEFINED, FOR EXAMPLE AS COMPILER
  *  OPTIONS.
@@ -57,9 +59,9 @@
  */
 /*---------------------------------------------------------------------------*/
 #undef  EASYCAP_TESTCARD
+#if (!defined(EASYCAP_NEEDS_ALSA))
 #undef  EASYCAP_TESTTONE
-#undef  NOREADBACK
-#undef  AUDIOTIME
+#endif /*EASYCAP_NEEDS_ALSA*/
 /*---------------------------------------------------------------------------*/
 #include <linux/kernel.h>
 #include <linux/errno.h>
@@ -79,6 +81,16 @@
 #include <linux/delay.h>
 #include <linux/types.h>
 
+#if defined(EASYCAP_NEEDS_ALSA)
+#include <linux/vmalloc.h>
+#include <linux/sound.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/info.h>
+#include <sound/initval.h>
+#include <sound/control.h>
+#endif /*EASYCAP_NEEDS_ALSA*/
 /*vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv*/
 #if defined(EASYCAP_IS_VIDEODEV_CLIENT)
 #include <media/v4l2-dev.h>
@@ -112,7 +124,7 @@
 #define USB_EASYCAP_VENDOR_ID	0x05e1
 #define USB_EASYCAP_PRODUCT_ID	0x0408
 
-#define EASYCAP_DRIVER_VERSION "0.8.41"
+#define EASYCAP_DRIVER_VERSION "0.9.01"
 #define EASYCAP_DRIVER_DESCRIPTION "easycapdc60"
 
 #define USB_SKEL_MINOR_BASE     192
@@ -158,7 +170,8 @@
  */
 /*---------------------------------------------------------------------------*/
 #define AUDIO_ISOC_BUFFER_MANY 16
-#define AUDIO_ISOC_ORDER 3
+#define AUDIO_ISOC_ORDER 1
+#define AUDIO_ISOC_FRAMESPERDESC 32
 #define AUDIO_ISOC_BUFFER_SIZE (PAGE_SIZE << AUDIO_ISOC_ORDER)
 /*---------------------------------------------------------------------------*/
 /*
@@ -166,6 +179,7 @@
  */
 /*---------------------------------------------------------------------------*/
 #define AUDIO_FRAGMENT_MANY 32
+#define PAGES_PER_AUDIO_FRAGMENT 4
 /*---------------------------------------------------------------------------*/
 /*
  *  IT IS ESSENTIAL THAT EVEN-NUMBERED STANDARDS ARE 25 FRAMES PER SECOND,
@@ -296,6 +310,7 @@ struct easycap {
 #define TELLTALE "expectedstring"
 char telltale[16];
 int isdongle;
+int minor;
 
 /*vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv*/
 #if defined(EASYCAP_IS_VIDEODEV_CLIENT)
@@ -328,6 +343,7 @@ int done[FRAME_BUFFER_MANY];
 
 wait_queue_head_t wq_video;
 wait_queue_head_t wq_audio;
+wait_queue_head_t wq_trigger;
 
 int input;
 int polled;
@@ -428,6 +444,20 @@ int allocation_video_page;
 int allocation_video_struct;
 int registered_video;
 /*---------------------------------------------------------------------------*/
+/*
+ *  ALSA
+ */
+/*---------------------------------------------------------------------------*/
+#if defined(EASYCAP_NEEDS_ALSA)
+struct snd_pcm_hardware alsa_hardware;
+struct snd_card *psnd_card;
+struct snd_pcm *psnd_pcm;
+struct snd_pcm_substream *psubstream;
+int dma_fill;
+int dma_next;
+int dma_read;
+#endif /*EASYCAP_NEEDS_ALSA*/
+/*---------------------------------------------------------------------------*/
 /*
  *  SOUND PROPERTIES
  */
@@ -455,10 +485,10 @@ struct list_head *purb_audio_head;
  *  BUFFER INDICATORS
  */
 /*---------------------------------------------------------------------------*/
-int audio_fill;		/* Audio buffer being filled by easysnd_complete().  */
-			/*   Bumped only by easysnd_complete().              */
-int audio_read;		/* Audio buffer page being read by easysnd_read().   */
-			/*   Set by easysnd_read() to trail audio_fill by    */
+int audio_fill;		/* Audio buffer being filled by easycap_complete().  */
+			/*   Bumped only by easycap_complete().              */
+int audio_read;		/* Audio buffer page being read by easycap_read().   */
+			/*   Set by easycap_read() to trail audio_fill by    */
 			/*   one fragment.                                   */
 /*---------------------------------------------------------------------------*/
 /*
@@ -532,19 +562,39 @@ int              adjust_volume(struct easycap *, int);
  *  AUDIO FUNCTION PROTOTYPES
  */
 /*---------------------------------------------------------------------------*/
-void             easysnd_complete(struct urb *);
-ssize_t          easysnd_read(struct file *, char __user *, size_t, loff_t *);
-int              easysnd_open(struct inode *, struct file *);
-int              easysnd_release(struct inode *, struct file *);
-long             easysnd_ioctl_noinode(struct file *, unsigned int, \
+#if defined(EASYCAP_NEEDS_ALSA)
+int		easycap_alsa_probe(struct easycap *);
+
+void            easycap_alsa_complete(struct urb *);
+int		easycap_alsa_open(struct snd_pcm_substream *);
+int		easycap_alsa_close(struct snd_pcm_substream *);
+int		easycap_alsa_hw_params(struct snd_pcm_substream *, \
+						struct snd_pcm_hw_params *);
+int             easycap_alsa_vmalloc(struct snd_pcm_substream *, size_t);
+int		easycap_alsa_hw_free(struct snd_pcm_substream *);
+int		easycap_alsa_prepare(struct snd_pcm_substream *);
+int		easycap_alsa_ack(struct snd_pcm_substream *);
+int		easycap_alsa_trigger(struct snd_pcm_substream *, int);
+snd_pcm_uframes_t \
+		easycap_alsa_pointer(struct snd_pcm_substream *);
+struct page	*easycap_alsa_page(struct snd_pcm_substream *, unsigned long);
+
+#else
+void             easyoss_complete(struct urb *);
+ssize_t          easyoss_read(struct file *, char __user *, size_t, loff_t *);
+int              easyoss_open(struct inode *, struct file *);
+int              easyoss_release(struct inode *, struct file *);
+long             easyoss_ioctl_noinode(struct file *, unsigned int, \
 								unsigned long);
-int              easysnd_ioctl(struct inode *, struct file *, unsigned int, \
+int              easyoss_ioctl(struct inode *, struct file *, unsigned int, \
 								unsigned long);
-unsigned int     easysnd_poll(struct file *, poll_table *);
-void             easysnd_delete(struct kref *);
+unsigned int     easyoss_poll(struct file *, poll_table *);
+void             easyoss_delete(struct kref *);
+#endif /*EASYCAP_NEEDS_ALSA*/
+int              easycap_sound_setup(struct easycap *);
 int              submit_audio_urbs(struct easycap *);
 int              kill_audio_urbs(struct easycap *);
-void             easysnd_testtone(struct easycap *, int);
+void             easyoss_testtone(struct easycap *, int);
 int              audio_setup(struct easycap *);
 /*---------------------------------------------------------------------------*/
 /*

drivers/staging/easycap/easycap_ioctl.h

@@ -24,5 +24,14 @@
  *
 */
 /*****************************************************************************/
+#if !defined(EASYCAP_IOCTL_H)
+#define EASYCAP_IOCTL_H
+
+extern int easycap_debug;
+extern int easycap_gain;
+extern struct easycap_dongle easycapdc60_dongle[];
+extern struct easycap_standard easycap_standard[];
 extern struct easycap_format easycap_format[];
 extern struct v4l2_queryctrl easycap_control[];
+
+#endif /*EASYCAP_IOCTL_H*/

drivers/staging/easycap/easycap_low.c

@@ -39,7 +39,7 @@
 /****************************************************************************/
 
 #include "easycap.h"
-#include "easycap_debug.h"
+#include "easycap_low.h"
 
 /*--------------------------------------------------------------------------*/
 const struct stk1160config { int reg; int set; } stk1160configPAL[256] = {
@@ -1052,9 +1052,18 @@ rc = usb_control_msg(pusb_device, usb_sndctrlpipe(pusb_device, 0),	\
 			(int)50000);
 
 JOT(8, "0x%02X=buffer\n", *((__u8 *) &buffer[0]));
-if (rc != (int)length)
-	SAY("ERROR: usb_control_msg returned %i\n", rc);
-
+if (rc != (int)length) {
+	switch (rc) {
+	case -EPIPE: {
+		SAY("usb_control_msg returned -EPIPE\n");
+		break;
+	}
+	default: {
+		SAY("ERROR: usb_control_msg returned %i\n", rc);
+		break;
+	}
+	}
+}
 /*--------------------------------------------------------------------------*/
 /*
  *  REGISTER 500:  SETTING VALUE TO 0x0094 RESETS AUDIO CONFIGURATION ???

drivers/staging/easycap/easycap_debug.h → drivers/staging/easycap/easycap_low.h

 /*****************************************************************************
 *                                                                            *
-*  easycap_debug.h                                                           *
+*  easycap_low.h                                                             *
 *                                                                            *
 *****************************************************************************/
 /*
@@ -24,6 +24,11 @@
  *
 */
 /*****************************************************************************/
+#if !defined(EASYCAP_LOW_H)
+#define EASYCAP_LOW_H
+
 extern int easycap_debug;
 extern int easycap_gain;
-extern struct easycap_dongle easycap_dongle[];
+extern struct easycap_dongle easycapdc60_dongle[];
+
+#endif /*EASYCAP_LOW_H*/

drivers/staging/easycap/easycap_main.h

+/*****************************************************************************
+*                                                                            *
+*  easycap_main.h                                                           *
+*                                                                            *
+*****************************************************************************/
+/*
+ *
+ *  Copyright (C) 2010 R.M. Thomas  <rmthomas@sciolus.org>
+ *
+ *
+ *  This 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.
+ *
+ *  The software 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 software; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+*/
+/*****************************************************************************/
+#if !defined(EASYCAP_MAIN_H)
+#define EASYCAP_MAIN_H
+
+extern struct easycap_standard easycap_standard[];
+extern struct easycap_format easycap_format[];
+extern struct v4l2_queryctrl easycap_control[];
+extern struct usb_driver easycap_usb_driver;
+#if defined(EASYCAP_NEEDS_ALSA)
+extern struct snd_pcm_ops easycap_alsa_ops;
+extern struct snd_pcm_hardware easycap_pcm_hardware;
+extern struct snd_card *psnd_card;
+#else
+extern struct usb_class_driver easyoss_class;
+extern const struct file_operations easyoss_fops;
+#endif /*EASYCAP_NEEDS_ALSA*/
+
+#endif /*EASYCAP_MAIN_H*/

drivers/staging/easycap/easycap_settings.c

@@ -26,7 +26,7 @@
 /*****************************************************************************/
 
 #include "easycap.h"
-#include "easycap_debug.h"
+#include "easycap_settings.h"
 
 /*---------------------------------------------------------------------------*/
 /*

drivers/staging/easycap/easycap_standard.h → drivers/staging/easycap/easycap_settings.h

 /*****************************************************************************
 *                                                                            *
-*  easycap_standard.h                                                        *
+*  easycap_settings.h                                                        *
 *                                                                            *
 *****************************************************************************/
 /*
@@ -24,4 +24,11 @@
  *
 */
 /*****************************************************************************/
-extern struct easycap_standard easycap_standard[];
+#if !defined(EASYCAP_SETTINGS_H)
+#define EASYCAP_SETTINGS_H
+
+extern int easycap_debug;
+extern int easycap_gain;
+extern struct easycap_dongle easycapdc60_dongle[];
+
+#endif /*EASYCAP_SETTINGS_H*/

drivers/staging/easycap/easycap_sound.h

@@ -24,5 +24,19 @@
  *
 */
 /*****************************************************************************/
+#if !defined(EASYCAP_SOUND_H)
+#define EASYCAP_SOUND_H
+
+extern int easycap_debug;
+extern int easycap_gain;
+extern struct easycap_dongle easycapdc60_dongle[];
 extern struct easycap *peasycap;
 extern struct usb_driver easycap_usb_driver;
+#if defined(EASYCAP_NEEDS_ALSA)
+extern struct snd_pcm_hardware easycap_pcm_hardware;
+#else
+extern struct usb_class_driver easyoss_class;
+extern const struct file_operations easyoss_fops;
+#endif /*EASYCAP_NEEDS_ALSA*/
+
+#endif /*EASYCAP_SOUND_H*/

drivers/staging/easycap/easycap_testcard.c

@@ -26,7 +26,7 @@
 /*****************************************************************************/
 
 #include "easycap.h"
-#include "easycap_debug.h"
+#include "easycap_testcard.h"
 
 /*****************************************************************************/
 #define TESTCARD_BYTESPERLINE (2 * 720)
@@ -397,7 +397,7 @@ int tones[2048] = {
 };
 /*****************************************************************************/
 void
-easysnd_testtone(struct easycap *peasycap, int audio_fill)
+easyoss_testtone(struct easycap *peasycap, int audio_fill)
 {
 int i1;
 unsigned char *p2;

drivers/staging/easycap/easycap_testcard.h

+/*****************************************************************************
+*                                                                            *
+*  easycap_testcard.h                                                        *
+*                                                                            *
+*****************************************************************************/
+/*
+ *
+ *  Copyright (C) 2010 R.M. Thomas  <rmthomas@sciolus.org>
+ *
+ *
+ *  This 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.
+ *
+ *  The software 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 software; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+*/
+/*****************************************************************************/
+#if !defined(EASYCAP_TESTCARD_H)
+#define EASYCAP_TESTCARD_H
+
+extern int easycap_debug;
+extern int easycap_gain;
+extern struct easycap_dongle easycapdc60_dongle[];
+
+#endif /*EASYCAP_TESTCARD_H*/