usb: gadget: function: make current f_uac1 implementation legacy

rbilovol · Felipe Balbi · commit d355339eecd9 · 2017-06-19T09:22:47.000+03:00
Before introducing new f_uac1 function (with virtual
ALSA card) make current implementation legacy.

This includes renaming of existing files, some
variables, config options and documentation

Signed-off-by: Ruslan Bilovol &lt;ruslan.bilovol@gmail.com&gt;
Signed-off-by: Felipe Balbi &lt;felipe.balbi@linux.intel.com&gt;
diff --git a/Documentation/ABI/testing/configfs-usb-gadget-uac1_legacy b/Documentation/ABI/testing/configfs-usb-gadget-uac1_legacy
@@ -1,4 +1,4 @@
-What:		/config/usb-gadget/gadget/functions/uac1.name
+What:		/config/usb-gadget/gadget/functions/uac1_legacy.name
 Date:		Sep 2014
 KernelVersion:	3.18
 Description:
diff --git a/Documentation/usb/gadget-testing.txt b/Documentation/usb/gadget-testing.txt
@@ -16,7 +16,7 @@ provided by gadgets.
 13. RNDIS function
 14. SERIAL function
 15. SOURCESINK function
-16. UAC1 function
+16. UAC1 function (legacy implementation)
 17. UAC2 function
 18. UVC function
 19. PRINTER function
@@ -589,15 +589,16 @@ device: run the gadget
 host: test-usb (tools/usb/testusb.c)
 
 
-16. UAC1 function
+16. UAC1 function (legacy implementation)
 =================
 
-The function is provided by usb_f_uac1.ko module.
+The function is provided by usb_f_uac1_legacy.ko module.
 
 Function-specific configfs interface
 ------------------------------------
 
-The function name to use when creating the function directory is "uac1".
+The function name to use when creating the function directory
+is "uac1_legacy".
 The uac1 function provides these attributes in its function directory:
 
 	audio_buf_size - audio buffer size
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
@@ -191,7 +191,7 @@ config USB_F_MASS_STORAGE
 config USB_F_FS
 	tristate
 
-config USB_F_UAC1
+config USB_F_UAC1_LEGACY
 	tristate
 
 config USB_F_UAC2
@@ -365,13 +365,13 @@ config USB_CONFIGFS_F_FS
 	  implemented in kernel space (for instance Ethernet, serial or
 	  mass storage) and other are implemented in user space.
 
-config USB_CONFIGFS_F_UAC1
-	bool "Audio Class 1.0"
+config USB_CONFIGFS_F_UAC1_LEGACY
+	bool "Audio Class 1.0 (legacy implementation)"
 	depends on USB_CONFIGFS
 	depends on SND
 	select USB_LIBCOMPOSITE
 	select SND_PCM
-	select USB_F_UAC1
+	select USB_F_UAC1_LEGACY
 	help
 	  This Audio function implements 1 AudioControl interface,
 	  1 AudioStreaming Interface each for USB-OUT and USB-IN.
diff --git a/drivers/usb/gadget/function/Makefile b/drivers/usb/gadget/function/Makefile
@@ -33,8 +33,8 @@ obj-$(CONFIG_USB_F_MASS_STORAGE)+= usb_f_mass_storage.o
 usb_f_fs-y			:= f_fs.o
 obj-$(CONFIG_USB_F_FS)		+= usb_f_fs.o
 obj-$(CONFIG_USB_U_AUDIO)	+= u_audio.o
-usb_f_uac1-y			:= f_uac1.o u_uac1.o
-obj-$(CONFIG_USB_F_UAC1)	+= usb_f_uac1.o
+usb_f_uac1_legacy-y		:= f_uac1_legacy.o u_uac1_legacy.o
+obj-$(CONFIG_USB_F_UAC1_LEGACY)	+= usb_f_uac1_legacy.o
 usb_f_uac2-y			:= f_uac2.o
 obj-$(CONFIG_USB_F_UAC2)	+= usb_f_uac2.o
 usb_f_uvc-y			:= f_uvc.o uvc_queue.o uvc_v4l2.o uvc_video.o uvc_configfs.o
diff --git a/drivers/usb/gadget/function/f_uac1_legacy.c b/drivers/usb/gadget/function/f_uac1_legacy.c
@@ -15,7 +15,7 @@
 #include <linux/device.h>
 #include <linux/atomic.h>
 
-#include "u_uac1.h"
+#include "u_uac1_legacy.h"
 
 static int generic_set_cmd(struct usb_audio_control *con, u8 cmd, int value);
 static int generic_get_cmd(struct usb_audio_control *con, u8 cmd);
@@ -326,11 +326,11 @@ static int f_audio_out_ep_complete(struct usb_ep *ep, struct usb_request *req)
 	struct f_audio *audio = req->context;
 	struct usb_composite_dev *cdev = audio->card.func.config->cdev;
 	struct f_audio_buf *copy_buf = audio->copy_buf;
-	struct f_uac1_opts *opts;
+	struct f_uac1_legacy_opts *opts;
 	int audio_buf_size;
 	int err;
 
-	opts = container_of(audio->card.func.fi, struct f_uac1_opts,
+	opts = container_of(audio->card.func.fi, struct f_uac1_legacy_opts,
 			    func_inst);
 	audio_buf_size = opts->audio_buf_size;
 
@@ -578,13 +578,13 @@ static int f_audio_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
 	struct usb_composite_dev *cdev = f->config->cdev;
 	struct usb_ep *out_ep = audio->out_ep;
 	struct usb_request *req;
-	struct f_uac1_opts *opts;
+	struct f_uac1_legacy_opts *opts;
 	int req_buf_size, req_count, audio_buf_size;
 	int i = 0, err = 0;
 
 	DBG(cdev, "intf %d, alt %d\n", intf, alt);
 
-	opts = container_of(f->fi, struct f_uac1_opts, func_inst);
+	opts = container_of(f->fi, struct f_uac1_legacy_opts, func_inst);
 	req_buf_size = opts->req_buf_size;
 	req_count = opts->req_count;
 	audio_buf_size = opts->audio_buf_size;
@@ -705,9 +705,9 @@ f_audio_bind(struct usb_configuration *c, struct usb_function *f)
 	struct usb_string	*us;
 	int			status;
 	struct usb_ep		*ep = NULL;
-	struct f_uac1_opts	*audio_opts;
+	struct f_uac1_legacy_opts	*audio_opts;
 
-	audio_opts = container_of(f->fi, struct f_uac1_opts, func_inst);
+	audio_opts = container_of(f->fi, struct f_uac1_legacy_opts, func_inst);
 	audio->card.gadget = c->cdev->gadget;
 	/* set up ASLA audio devices */
 	if (!audio_opts->bound) {
@@ -801,15 +801,16 @@ static int control_selector_init(struct f_audio *audio)
 	return 0;
 }
 
-static inline struct f_uac1_opts *to_f_uac1_opts(struct config_item *item)
+static inline
+struct f_uac1_legacy_opts *to_f_uac1_opts(struct config_item *item)
 {
-	return container_of(to_config_group(item), struct f_uac1_opts,
+	return container_of(to_config_group(item), struct f_uac1_legacy_opts,
 			    func_inst.group);
 }
 
 static void f_uac1_attr_release(struct config_item *item)
 {
-	struct f_uac1_opts *opts = to_f_uac1_opts(item);
+	struct f_uac1_legacy_opts *opts = to_f_uac1_opts(item);
 
 	usb_put_function_instance(&opts->func_inst);
 }
@@ -822,7 +823,7 @@ static struct configfs_item_operations f_uac1_item_ops = {
 static ssize_t f_uac1_opts_##name##_show(struct config_item *item,	\
 					 char *page)			\
 {									\
-	struct f_uac1_opts *opts = to_f_uac1_opts(item);		\
+	struct f_uac1_legacy_opts *opts = to_f_uac1_opts(item);		\
 	int result;							\
 									\
 	mutex_lock(&opts->lock);					\
@@ -835,7 +836,7 @@ static ssize_t f_uac1_opts_##name##_show(struct config_item *item,	\
 static ssize_t f_uac1_opts_##name##_store(struct config_item *item,		\
 					  const char *page, size_t len)	\
 {									\
-	struct f_uac1_opts *opts = to_f_uac1_opts(item);		\
+	struct f_uac1_legacy_opts *opts = to_f_uac1_opts(item);		\
 	int ret;							\
 	u32 num;							\
 									\
@@ -867,7 +868,7 @@ UAC1_INT_ATTRIBUTE(audio_buf_size);
 static ssize_t f_uac1_opts_##name##_show(struct config_item *item,	\
 					 char *page)			\
 {									\
-	struct f_uac1_opts *opts = to_f_uac1_opts(item);		\
+	struct f_uac1_legacy_opts *opts = to_f_uac1_opts(item);		\
 	int result;							\
 									\
 	mutex_lock(&opts->lock);					\
@@ -880,7 +881,7 @@ static ssize_t f_uac1_opts_##name##_show(struct config_item *item,	\
 static ssize_t f_uac1_opts_##name##_store(struct config_item *item,	\
 					  const char *page, size_t len)	\
 {									\
-	struct f_uac1_opts *opts = to_f_uac1_opts(item);		\
+	struct f_uac1_legacy_opts *opts = to_f_uac1_opts(item);		\
 	int ret = -EBUSY;						\
 	char *tmp;							\
 									\
@@ -928,9 +929,9 @@ static struct config_item_type f_uac1_func_type = {
 
 static void f_audio_free_inst(struct usb_function_instance *f)
 {
-	struct f_uac1_opts *opts;
+	struct f_uac1_legacy_opts *opts;
 
-	opts = container_of(f, struct f_uac1_opts, func_inst);
+	opts = container_of(f, struct f_uac1_legacy_opts, func_inst);
 	if (opts->fn_play_alloc)
 		kfree(opts->fn_play);
 	if (opts->fn_cap_alloc)
@@ -942,7 +943,7 @@ static void f_audio_free_inst(struct usb_function_instance *f)
 
 static struct usb_function_instance *f_audio_alloc_inst(void)
 {
-	struct f_uac1_opts *opts;
+	struct f_uac1_legacy_opts *opts;
 
 	opts = kzalloc(sizeof(*opts), GFP_KERNEL);
 	if (!opts)
@@ -966,10 +967,10 @@ static struct usb_function_instance *f_audio_alloc_inst(void)
 static void f_audio_free(struct usb_function *f)
 {
 	struct f_audio *audio = func_to_audio(f);
-	struct f_uac1_opts *opts;
+	struct f_uac1_legacy_opts *opts;
 
 	gaudio_cleanup(&audio->card);
-	opts = container_of(f->fi, struct f_uac1_opts, func_inst);
+	opts = container_of(f->fi, struct f_uac1_legacy_opts, func_inst);
 	kfree(audio);
 	mutex_lock(&opts->lock);
 	--opts->refcnt;
@@ -984,7 +985,7 @@ static void f_audio_unbind(struct usb_configuration *c, struct usb_function *f)
 static struct usb_function *f_audio_alloc(struct usb_function_instance *fi)
 {
 	struct f_audio *audio;
-	struct f_uac1_opts *opts;
+	struct f_uac1_legacy_opts *opts;
 
 	/* allocate and initialize one new instance */
 	audio = kzalloc(sizeof(*audio), GFP_KERNEL);
@@ -993,7 +994,7 @@ static struct usb_function *f_audio_alloc(struct usb_function_instance *fi)
 
 	audio->card.func.name = "g_audio";
 
-	opts = container_of(fi, struct f_uac1_opts, func_inst);
+	opts = container_of(fi, struct f_uac1_legacy_opts, func_inst);
 	mutex_lock(&opts->lock);
 	++opts->refcnt;
 	mutex_unlock(&opts->lock);
@@ -1015,6 +1016,6 @@ static struct usb_function *f_audio_alloc(struct usb_function_instance *fi)
 	return &audio->card.func;
 }
 
-DECLARE_USB_FUNCTION_INIT(uac1, f_audio_alloc_inst, f_audio_alloc);
+DECLARE_USB_FUNCTION_INIT(uac1_legacy, f_audio_alloc_inst, f_audio_alloc);
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Bryan Wu");
diff --git a/drivers/usb/gadget/function/u_uac1_legacy.c b/drivers/usb/gadget/function/u_uac1_legacy.c
@@ -18,7 +18,7 @@
 #include <linux/random.h>
 #include <linux/syscalls.h>
 
-#include "u_uac1.h"
+#include "u_uac1_legacy.h"
 
 /*
  * This component encapsulates the ALSA devices for USB audio gadget
@@ -205,10 +205,11 @@ static int gaudio_open_snd_dev(struct gaudio *card)
 {
 	struct snd_pcm_file *pcm_file;
 	struct gaudio_snd_dev *snd;
-	struct f_uac1_opts *opts;
+	struct f_uac1_legacy_opts *opts;
 	char *fn_play, *fn_cap, *fn_cntl;
 
-	opts = container_of(card->func.fi, struct f_uac1_opts, func_inst);
+	opts = container_of(card->func.fi, struct f_uac1_legacy_opts,
+			    func_inst);
 	fn_play = opts->fn_play;
 	fn_cap = opts->fn_cap;
 	fn_cntl = opts->fn_cntl;
diff --git a/drivers/usb/gadget/function/u_uac1_legacy.h b/drivers/usb/gadget/function/u_uac1_legacy.h
@@ -9,8 +9,8 @@
  * Licensed under the GPL-2 or later.
  */
 
-#ifndef __U_AUDIO_H
-#define __U_AUDIO_H
+#ifndef __U_UAC1_LEGACY_H
+#define __U_UAC1_LEGACY_H
 
 #include <linux/device.h>
 #include <linux/err.h>
@@ -56,7 +56,7 @@ struct gaudio {
 	/* TODO */
 };
 
-struct f_uac1_opts {
+struct f_uac1_legacy_opts {
 	struct usb_function_instance	func_inst;
 	int				req_buf_size;
 	int				req_count;
@@ -79,4 +79,4 @@ size_t u_audio_playback(struct gaudio *card, void *buf, size_t count);
 int u_audio_get_playback_channels(struct gaudio *card);
 int u_audio_get_playback_rate(struct gaudio *card);
 
-#endif /* __U_AUDIO_H */
+#endif /* __U_UAC1_LEGACY_H */
diff --git a/drivers/usb/gadget/legacy/Kconfig b/drivers/usb/gadget/legacy/Kconfig
@@ -54,8 +54,8 @@ config USB_AUDIO
 	depends on SND
 	select USB_LIBCOMPOSITE
 	select SND_PCM
-	select USB_F_UAC1 if GADGET_UAC1
-	select USB_F_UAC2 if !GADGET_UAC1
+	select USB_F_UAC1_LEGACY if GADGET_UAC1_LEGACY
+	select USB_F_UAC2 if !GADGET_UAC1_LEGACY
 	select USB_U_AUDIO if USB_F_UAC2
 	help
 	  This Gadget Audio driver is compatible with USB Audio Class
@@ -73,7 +73,7 @@ config USB_AUDIO
 	  Say "y" to link the driver statically, or "m" to build a
 	  dynamically linked module called "g_audio".
 
-config GADGET_UAC1
+config GADGET_UAC1_LEGACY
 	bool "UAC 1.0 (Legacy)"
 	depends on USB_AUDIO
 	help
diff --git a/drivers/usb/gadget/legacy/audio.c b/drivers/usb/gadget/legacy/audio.c

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-What: /config/usb-gadget/gadget/functions/uac1.name`
	`1`	`+What: /config/usb-gadget/gadget/functions/uac1_legacy.name`
`2`	`2`	`Date: Sep 2014`
`3`	`3`	`KernelVersion: 3.18`
`4`	`4`	`Description:`