staging/easycap: make OSS compilation optional instead of ALSA

OSS is deprecated yet currently it is reported to be more stable
therefore we keep it but make it optional
Revert the conditional compilation:
	add  CONFIG_EASYCAP_OSS and kill EASYCAP_NEEDS_ALSA
move oss-only code from easycap_sound.c to easycap_sound_oss.c

Cc: Mike Thomas <rmthomas@sciolus.org>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
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 && SND
+	depends on USB && VIDEO_DEV && SOUND
 
 	---help---
 	  This is an integrated audio/video driver for EasyCAP cards with
@@ -15,6 +15,18 @@ config EASYCAP
 	  To compile this driver as a module, choose M here: the
 	  module will be called easycap
 
+config EASYCAP_OSS
+	bool "OSS (DEPRECATED)"
+	depends on EASYCAP && SOUND_OSS_CORE
+
+	---help---
+	  Say 'Y' if you prefer Open Sound System (OSS) interface
+
+	  This will disable Advanced Linux Sound Architecture (ALSA) binding.
+
+	  Once binding to ALSA interface will be stable this option will be
+          removed.
+
 config EASYCAP_DEBUG
 	bool "Enable EasyCAP driver debugging"
 	depends on EASYCAP

drivers/staging/easycap/Makefile

-easycap-objs      := easycap_main.o easycap_low.o easycap_sound.o \
-		     easycap_ioctl.o easycap_settings.o easycap_testcard.o
+easycap-objs := easycap_main.o
+easycap-objs += easycap_low.o
+easycap-objs += easycap_ioctl.o
+easycap-objs += easycap_settings.o
+easycap-objs += easycap_testcard.o
+easycap-objs += easycap_sound.o
+easycap-$(CONFIG_EASYCAP_OSS) += easycap_sound_oss.o
 
 obj-$(CONFIG_EASYCAP)       += easycap.o
 
@@ -8,5 +13,4 @@ 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
 

drivers/staging/easycap/easycap.h

@@ -59,9 +59,9 @@
  */
 /*---------------------------------------------------------------------------*/
 #undef  EASYCAP_TESTCARD
-#if (!defined(EASYCAP_NEEDS_ALSA))
+#ifdef CONFIG_EASYCAP_OSS
 #undef  EASYCAP_TESTTONE
-#endif /*EASYCAP_NEEDS_ALSA*/
+#endif /* CONFIG_EASYCAP_OSS */
 /*---------------------------------------------------------------------------*/
 #include <linux/kernel.h>
 #include <linux/errno.h>
@@ -81,7 +81,7 @@
 #include <linux/delay.h>
 #include <linux/types.h>
 
-#if defined(EASYCAP_NEEDS_ALSA)
+#ifndef CONFIG_EASYCAP_OSS
 #include <linux/vmalloc.h>
 #include <linux/sound.h>
 #include <sound/core.h>
@@ -90,7 +90,7 @@
 #include <sound/info.h>
 #include <sound/initval.h>
 #include <sound/control.h>
-#endif /*EASYCAP_NEEDS_ALSA*/
+#endif /* !CONFIG_EASYCAP_OSS */
 /*vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv*/
 #if defined(EASYCAP_IS_VIDEODEV_CLIENT)
 #include <media/v4l2-dev.h>
@@ -445,7 +445,7 @@ __s16 oldaudio;
  *  ALSA
  */
 /*---------------------------------------------------------------------------*/
-#if defined(EASYCAP_NEEDS_ALSA)
+#ifndef CONFIG_EASYCAP_OSS
 	struct snd_pcm_hardware alsa_hardware;
 	struct snd_card *psnd_card;
 	struct snd_pcm *psnd_pcm;
@@ -453,7 +453,7 @@ __s16 oldaudio;
 	int dma_fill;
 	int dma_next;
 	int dma_read;
-#endif /*EASYCAP_NEEDS_ALSA*/
+#endif /* !CONFIG_EASYCAP_OSS */
 /*---------------------------------------------------------------------------*/
 /*
  *  SOUND PROPERTIES
@@ -537,7 +537,7 @@ int              adjust_volume(struct easycap *, int);
  *  AUDIO FUNCTION PROTOTYPES
  */
 /*---------------------------------------------------------------------------*/
-#if defined(EASYCAP_NEEDS_ALSA)
+#ifndef CONFIG_EASYCAP_OSS
 int		easycap_alsa_probe(struct easycap *);
 
 void            easycap_alsa_complete(struct urb *);
@@ -553,7 +553,7 @@ 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
+#else /* CONFIG_EASYCAP_OSS */
 void             easyoss_complete(struct urb *);
 ssize_t          easyoss_read(struct file *, char __user *, size_t, loff_t *);
 int              easyoss_open(struct inode *, struct file *);
@@ -564,7 +564,8 @@ int              easyoss_ioctl(struct inode *, struct file *, unsigned int,
 								unsigned long);
 unsigned int     easyoss_poll(struct file *, poll_table *);
 void             easyoss_delete(struct kref *);
-#endif /*EASYCAP_NEEDS_ALSA*/
+#endif /* !CONFIG_EASYCAP_OSS */
+
 int              easycap_sound_setup(struct easycap *);
 int              submit_audio_urbs(struct easycap *);
 int              kill_audio_urbs(struct easycap *);
@@ -715,13 +716,13 @@ extern struct easycap_format easycap_format[];
 extern struct v4l2_queryctrl easycap_control[];
 extern struct usb_driver easycap_usb_driver;
 extern struct easycap_dongle easycapdc60_dongle[];
-#if defined(EASYCAP_NEEDS_ALSA)
+#ifndef CONFIG_EASYCAP_OSS
 extern struct snd_pcm_ops easycap_alsa_ops;
 extern struct snd_pcm_hardware easycap_pcm_hardware;
 extern struct snd_card *psnd_card;
-#else
+#else /* CONFIG_EASYCAP_OSS */
 extern struct usb_class_driver easyoss_class;
 extern const struct file_operations easyoss_fops;
-#endif /*EASYCAP_NEEDS_ALSA*/
+#endif /* !CONFIG_EASYCAP_OSS */
 
 #endif /* !__EASYCAP_H__  */

drivers/staging/easycap/easycap_ioctl.c

@@ -2517,7 +2517,7 @@ JOM(4, "unlocked easycapdc60_dongle[%i].mutex_video\n", kd);
 return 0;
 }
 /*****************************************************************************/
-#if !defined(EASYCAP_NEEDS_ALSA)
+#ifdef CONFIG_EASYCAP_OSS
 /*vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv*/
 #if ((defined(EASYCAP_IS_VIDEODEV_CLIENT)) || \
 	(defined(EASYCAP_NEEDS_UNLOCKED_IOCTL)))
@@ -2821,6 +2821,6 @@ default: {
 mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
 return 0;
 }
-#endif /*EASYCAP_NEEDS_ALSA*/
+#endif /* CONFIG_EASYCAP_OSS */
 /*****************************************************************************/
 

drivers/staging/easycap/easycap_main.c

@@ -962,7 +962,7 @@ for (k = 0;  k < AUDIO_ISOC_BUFFER_MANY;  k++) {
 JOM(4, "easyoss_delete(): isoc audio buffers freed: %i pages\n",
 					m * (0x01 << AUDIO_ISOC_ORDER));
 /*---------------------------------------------------------------------------*/
-#if !defined(EASYCAP_NEEDS_ALSA)
+#ifdef CONFIG_EASYCAP_OSS
 JOM(4, "freeing audio buffers.\n");
 gone = 0;
 for (k = 0;  k < peasycap->audio_buffer_page_many;  k++) {
@@ -974,7 +974,7 @@ for (k = 0;  k < peasycap->audio_buffer_page_many;  k++) {
 	}
 }
 JOM(4, "easyoss_delete(): audio buffers freed: %i pages\n", gone);
-#endif /*!EASYCAP_NEEDS_ALSA*/
+#endif /* CONFIG_EASYCAP_OSS */
 /*---------------------------------------------------------------------------*/
 JOM(4, "freeing easycap structure.\n");
 allocation_video_urb    = peasycap->allocation_video_urb;
@@ -4350,7 +4350,7 @@ case 2: {
 	INIT_LIST_HEAD(&(peasycap->urb_audio_head));
 	peasycap->purb_audio_head = &(peasycap->urb_audio_head);
 
-#if !defined(EASYCAP_NEEDS_ALSA)
+#ifdef CONFIG_EASYCAP_OSS
 	JOM(4, "allocating an audio buffer\n");
 	JOM(4, ".... scattered over %i pages\n",
 					peasycap->audio_buffer_page_many);
@@ -4375,7 +4375,7 @@ case 2: {
 	peasycap->audio_fill = 0;
 	peasycap->audio_read = 0;
 	JOM(4, "allocation of audio buffer done:  %i pages\n", k);
-#endif /*!EASYCAP_NEEDS_ALSA*/
+#endif /* CONFIG_EASYCAP_OSS */
 /*---------------------------------------------------------------------------*/
 	JOM(4, "allocating %i isoc audio buffers of size %i\n",
 		AUDIO_ISOC_BUFFER_MANY, peasycap->audio_isoc_buffer_size);
@@ -4450,11 +4450,11 @@ case 2: {
 				"peasycap->audio_isoc_buffer[.].pgo;\n");
 			JOM(4, "  purb->transfer_buffer_length = %i;\n",
 					peasycap->audio_isoc_buffer_size);
-#if defined(EASYCAP_NEEDS_ALSA)
-			JOM(4, "  purb->complete = easycap_alsa_complete;\n");
-#else
+#ifdef CONFIG_EASYCAP_OSS
 			JOM(4, "  purb->complete = easyoss_complete;\n");
-#endif /*EASYCAP_NEEDS_ALSA*/
+#else /* CONFIG_EASYCAP_OSS */
+			JOM(4, "  purb->complete = easycap_alsa_complete;\n");
+#endif /* CONFIG_EASYCAP_OSS */
 			JOM(4, "  purb->context = peasycap;\n");
 			JOM(4, "  purb->start_frame = 0;\n");
 			JOM(4, "  purb->number_of_packets = %i;\n",
@@ -4477,11 +4477,11 @@ case 2: {
 		purb->transfer_buffer = peasycap->audio_isoc_buffer[k].pgo;
 		purb->transfer_buffer_length =
 					peasycap->audio_isoc_buffer_size;
-#if defined(EASYCAP_NEEDS_ALSA)
-		purb->complete = easycap_alsa_complete;
-#else
+#ifdef CONFIG_EASYCAP_OSS
 		purb->complete = easyoss_complete;
-#endif /*EASYCAP_NEEDS_ALSA*/
+#else /* CONFIG_EASYCAP_OSS */
+		purb->complete = easycap_alsa_complete;
+#endif /* CONFIG_EASYCAP_OSS */
 		purb->context = peasycap;
 		purb->start_frame = 0;
 		purb->number_of_packets = peasycap->audio_isoc_framesperdesc;
@@ -4504,7 +4504,7 @@ case 2: {
  *  THE AUDIO DEVICE CAN BE REGISTERED NOW, AS IT IS READY.
  */
 /*---------------------------------------------------------------------------*/
-#if defined(EASYCAP_NEEDS_ALSA)
+#ifndef CONFIG_EASYCAP_OSS
 	JOM(4, "initializing ALSA card\n");
 
 	rc = easycap_alsa_probe(peasycap);
@@ -4518,7 +4518,7 @@ case 2: {
 		(peasycap->registered_audio)++;
 	}
 
-#else /*EASYCAP_NEEDS_ALSA*/
+#else /* CONFIG_EASYCAP_OSS */
 	rc = usb_register_dev(pusb_interface, &easyoss_class);
 	if (0 != rc) {
 		SAY("ERROR: usb_register_dev() failed\n");
@@ -4536,7 +4536,7 @@ case 2: {
  */
 /*---------------------------------------------------------------------------*/
 	SAM("easyoss attached to minor #%d\n", pusb_interface->minor);
-#endif /*EASYCAP_NEEDS_ALSA*/
+#endif /* CONFIG_EASYCAP_OSS */
 
 	break;
 }
@@ -4774,7 +4774,7 @@ case 2: {
 		JOM(4, "locked easycapdc60_dongle[%i].mutex_audio\n", kd);
 	} else
 		SAY("ERROR: %i=kd is bad: cannot lock dongle\n", kd);
-#if defined(EASYCAP_NEEDS_ALSA)
+#ifndef CONFIG_EASYCAP_OSS
 
 
 
@@ -4786,12 +4786,12 @@ case 2: {
 	}
 
 
-#else /*EASYCAP_NEEDS_ALSA*/
+#else /* CONFIG_EASYCAP_OSS */
 	usb_deregister_dev(pusb_interface, &easyoss_class);
 	(peasycap->registered_audio)--;
 	JOM(4, "intf[%i]: usb_deregister_dev()\n", bInterfaceNumber);
 	SAM("easyoss detached from minor #%d\n", minor);
-#endif /*EASYCAP_NEEDS_ALSA*/
+#endif /* CONFIG_EASYCAP_OSS */
 
 	if (0 <= kd && DONGLE_MANY > kd) {
 		mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);