Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 398 insertions, 0 deletions

diff --git a/drivers/usb/gadget/legacy/audio.c b/drivers/usb/gadget/legacy/audio.c
new file mode 100644
index 0000000000..76ea6decf7
--- /dev/null
+++ b/drivers/usb/gadget/legacy/audio.c
@@ -0,0 +1,398 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * audio.c -- Audio gadget driver
+ *
+ * Copyright (C) 2008 Bryan Wu <cooloney@kernel.org>
+ * Copyright (C) 2008 Analog Devices, Inc
+ */
+
+/* #define VERBOSE_DEBUG */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/usb/composite.h>
+
+#define DRIVER_DESC		"Linux USB Audio Gadget"
+#define DRIVER_VERSION		"Feb 2, 2012"
+
+USB_GADGET_COMPOSITE_OPTIONS();
+
+#ifndef CONFIG_GADGET_UAC1
+#include "u_uac2.h"
+
+/* Playback(USB-IN) Default Stereo - Fl/Fr */
+static int p_chmask = UAC2_DEF_PCHMASK;
+module_param(p_chmask, uint, 0444);
+MODULE_PARM_DESC(p_chmask, "Playback Channel Mask");
+
+/* Playback Default 48 KHz */
+static int p_srates[UAC_MAX_RATES] = {UAC2_DEF_PSRATE};
+static int p_srates_cnt = 1;
+module_param_array_named(p_srate, p_srates, uint, &p_srates_cnt, 0444);
+MODULE_PARM_DESC(p_srate, "Playback Sampling Rates (array)");
+
+/* Playback Default 16bits/sample */
+static int p_ssize = UAC2_DEF_PSSIZE;
+module_param(p_ssize, uint, 0444);
+MODULE_PARM_DESC(p_ssize, "Playback Sample Size(bytes)");
+
+/* Playback bInterval for HS/SS (1-4: fixed, 0: auto) */
+static u8 p_hs_bint = UAC2_DEF_PHSBINT;
+module_param(p_hs_bint, byte, 0444);
+MODULE_PARM_DESC(p_hs_bint,
+		"Playback bInterval for HS/SS (1-4: fixed, 0: auto)");
+
+/* Capture(USB-OUT) Default Stereo - Fl/Fr */
+static int c_chmask = UAC2_DEF_CCHMASK;
+module_param(c_chmask, uint, 0444);
+MODULE_PARM_DESC(c_chmask, "Capture Channel Mask");
+
+/* Capture Default 64 KHz */
+static int c_srates[UAC_MAX_RATES] = {UAC2_DEF_CSRATE};
+static int c_srates_cnt = 1;
+module_param_array_named(c_srate, c_srates, uint, &c_srates_cnt, 0444);
+MODULE_PARM_DESC(c_srate, "Capture Sampling Rates (array)");
+
+/* Capture Default 16bits/sample */
+static int c_ssize = UAC2_DEF_CSSIZE;
+module_param(c_ssize, uint, 0444);
+MODULE_PARM_DESC(c_ssize, "Capture Sample Size(bytes)");
+
+/* capture bInterval for HS/SS (1-4: fixed, 0: auto) */
+static u8 c_hs_bint = UAC2_DEF_CHSBINT;
+module_param(c_hs_bint, byte, 0444);
+MODULE_PARM_DESC(c_hs_bint,
+		"Capture bInterval for HS/SS (1-4: fixed, 0: auto)");
+
+#else
+#ifndef CONFIG_GADGET_UAC1_LEGACY
+#include "u_uac1.h"
+
+/* Playback(USB-IN) Default Stereo - Fl/Fr */
+static int p_chmask = UAC1_DEF_PCHMASK;
+module_param(p_chmask, uint, 0444);
+MODULE_PARM_DESC(p_chmask, "Playback Channel Mask");
+
+/* Playback Default 48 KHz */
+static int p_srates[UAC_MAX_RATES] = {UAC1_DEF_PSRATE};
+static int p_srates_cnt = 1;
+module_param_array_named(p_srate, p_srates, uint, &p_srates_cnt, 0444);
+MODULE_PARM_DESC(p_srate, "Playback Sampling Rates (array)");
+
+/* Playback Default 16bits/sample */
+static int p_ssize = UAC1_DEF_PSSIZE;
+module_param(p_ssize, uint, 0444);
+MODULE_PARM_DESC(p_ssize, "Playback Sample Size(bytes)");
+
+/* Capture(USB-OUT) Default Stereo - Fl/Fr */
+static int c_chmask = UAC1_DEF_CCHMASK;
+module_param(c_chmask, uint, 0444);
+MODULE_PARM_DESC(c_chmask, "Capture Channel Mask");
+
+/* Capture Default 48 KHz */
+static int c_srates[UAC_MAX_RATES] = {UAC1_DEF_CSRATE};
+static int c_srates_cnt = 1;
+module_param_array_named(c_srate, c_srates, uint, &c_srates_cnt, 0444);
+MODULE_PARM_DESC(c_srate, "Capture Sampling Rates (array)");
+
+/* Capture Default 16bits/sample */
+static int c_ssize = UAC1_DEF_CSSIZE;
+module_param(c_ssize, uint, 0444);
+MODULE_PARM_DESC(c_ssize, "Capture Sample Size(bytes)");
+#else /* CONFIG_GADGET_UAC1_LEGACY */
+#include "u_uac1_legacy.h"
+
+static char *fn_play = FILE_PCM_PLAYBACK;
+module_param(fn_play, charp, 0444);
+MODULE_PARM_DESC(fn_play, "Playback PCM device file name");
+
+static char *fn_cap = FILE_PCM_CAPTURE;
+module_param(fn_cap, charp, 0444);
+MODULE_PARM_DESC(fn_cap, "Capture PCM device file name");
+
+static char *fn_cntl = FILE_CONTROL;
+module_param(fn_cntl, charp, 0444);
+MODULE_PARM_DESC(fn_cntl, "Control device file name");
+
+static int req_buf_size = UAC1_OUT_EP_MAX_PACKET_SIZE;
+module_param(req_buf_size, int, 0444);
+MODULE_PARM_DESC(req_buf_size, "ISO OUT endpoint request buffer size");
+
+static int req_count = UAC1_REQ_COUNT;
+module_param(req_count, int, 0444);
+MODULE_PARM_DESC(req_count, "ISO OUT endpoint request count");
+
+static int audio_buf_size = UAC1_AUDIO_BUF_SIZE;
+module_param(audio_buf_size, int, 0444);
+MODULE_PARM_DESC(audio_buf_size, "Audio buffer size");
+#endif /* CONFIG_GADGET_UAC1_LEGACY */
+#endif
+
+/* string IDs are assigned dynamically */
+
+static struct usb_string strings_dev[] = {
+	[USB_GADGET_MANUFACTURER_IDX].s = "",
+	[USB_GADGET_PRODUCT_IDX].s = DRIVER_DESC,
+	[USB_GADGET_SERIAL_IDX].s = "",
+	{  } /* end of list */
+};
+
+static struct usb_gadget_strings stringtab_dev = {
+	.language = 0x0409,	/* en-us */
+	.strings = strings_dev,
+};
+
+static struct usb_gadget_strings *audio_strings[] = {
+	&stringtab_dev,
+	NULL,
+};
+
+#ifndef CONFIG_GADGET_UAC1
+static struct usb_function_instance *fi_uac2;
+static struct usb_function *f_uac2;
+#else
+static struct usb_function_instance *fi_uac1;
+static struct usb_function *f_uac1;
+#endif
+
+/*-------------------------------------------------------------------------*/
+
+/* DO NOT REUSE THESE IDs with a protocol-incompatible driver!!  Ever!!
+ * Instead:  allocate your own, using normal USB-IF procedures.
+ */
+
+/* Thanks to Linux Foundation for donating this product ID. */
+#define AUDIO_VENDOR_NUM		0x1d6b	/* Linux Foundation */
+#define AUDIO_PRODUCT_NUM		0x0101	/* Linux-USB Audio Gadget */
+
+/*-------------------------------------------------------------------------*/
+
+static struct usb_device_descriptor device_desc = {
+	.bLength =		sizeof device_desc,
+	.bDescriptorType =	USB_DT_DEVICE,
+
+	/* .bcdUSB = DYNAMIC */
+
+#ifdef CONFIG_GADGET_UAC1_LEGACY
+	.bDeviceClass =		USB_CLASS_PER_INTERFACE,
+	.bDeviceSubClass =	0,
+	.bDeviceProtocol =	0,
+#else
+	.bDeviceClass =		USB_CLASS_MISC,
+	.bDeviceSubClass =	0x02,
+	.bDeviceProtocol =	0x01,
+#endif
+	/* .bMaxPacketSize0 = f(hardware) */
+
+	/* Vendor and product id defaults change according to what configs
+	 * we support.  (As does bNumConfigurations.)  These values can
+	 * also be overridden by module parameters.
+	 */
+	.idVendor =		cpu_to_le16(AUDIO_VENDOR_NUM),
+	.idProduct =		cpu_to_le16(AUDIO_PRODUCT_NUM),
+	/* .bcdDevice = f(hardware) */
+	/* .iManufacturer = DYNAMIC */
+	/* .iProduct = DYNAMIC */
+	/* NO SERIAL NUMBER */
+	.bNumConfigurations =	1,
+};
+
+static const struct usb_descriptor_header *otg_desc[2];
+
+/*-------------------------------------------------------------------------*/
+
+static int audio_do_config(struct usb_configuration *c)
+{
+	int status;
+
+	/* FIXME alloc iConfiguration string, set it in c->strings */
+
+	if (gadget_is_otg(c->cdev->gadget)) {
+		c->descriptors = otg_desc;
+		c->bmAttributes |= USB_CONFIG_ATT_WAKEUP;
+	}
+
+#ifdef CONFIG_GADGET_UAC1
+	f_uac1 = usb_get_function(fi_uac1);
+	if (IS_ERR(f_uac1)) {
+		status = PTR_ERR(f_uac1);
+		return status;
+	}
+
+	status = usb_add_function(c, f_uac1);
+	if (status < 0) {
+		usb_put_function(f_uac1);
+		return status;
+	}
+#else
+	f_uac2 = usb_get_function(fi_uac2);
+	if (IS_ERR(f_uac2)) {
+		status = PTR_ERR(f_uac2);
+		return status;
+	}
+
+	status = usb_add_function(c, f_uac2);
+	if (status < 0) {
+		usb_put_function(f_uac2);
+		return status;
+	}
+#endif
+
+	return 0;
+}
+
+static struct usb_configuration audio_config_driver = {
+	.label			= DRIVER_DESC,
+	.bConfigurationValue	= 1,
+	/* .iConfiguration = DYNAMIC */
+	.bmAttributes		= USB_CONFIG_ATT_SELFPOWER,
+};
+
+/*-------------------------------------------------------------------------*/
+
+static int audio_bind(struct usb_composite_dev *cdev)
+{
+#ifndef CONFIG_GADGET_UAC1
+	struct f_uac2_opts	*uac2_opts;
+	int i;
+#else
+#ifndef CONFIG_GADGET_UAC1_LEGACY
+	struct f_uac1_opts	*uac1_opts;
+	int i;
+#else
+	struct f_uac1_legacy_opts	*uac1_opts;
+#endif
+#endif
+	int			status;
+
+#ifndef CONFIG_GADGET_UAC1
+	fi_uac2 = usb_get_function_instance("uac2");
+	if (IS_ERR(fi_uac2))
+		return PTR_ERR(fi_uac2);
+#else
+#ifndef CONFIG_GADGET_UAC1_LEGACY
+	fi_uac1 = usb_get_function_instance("uac1");
+#else
+	fi_uac1 = usb_get_function_instance("uac1_legacy");
+#endif
+	if (IS_ERR(fi_uac1))
+		return PTR_ERR(fi_uac1);
+#endif
+
+#ifndef CONFIG_GADGET_UAC1
+	uac2_opts = container_of(fi_uac2, struct f_uac2_opts, func_inst);
+	uac2_opts->p_chmask = p_chmask;
+
+	for (i = 0; i < p_srates_cnt; ++i)
+		uac2_opts->p_srates[i] = p_srates[i];
+
+	uac2_opts->p_ssize = p_ssize;
+	uac2_opts->p_hs_bint = p_hs_bint;
+	uac2_opts->c_chmask = c_chmask;
+
+	for (i = 0; i < c_srates_cnt; ++i)
+		uac2_opts->c_srates[i] = c_srates[i];
+
+	uac2_opts->c_ssize = c_ssize;
+	uac2_opts->c_hs_bint = c_hs_bint;
+	uac2_opts->req_number = UAC2_DEF_REQ_NUM;
+#else
+#ifndef CONFIG_GADGET_UAC1_LEGACY
+	uac1_opts = container_of(fi_uac1, struct f_uac1_opts, func_inst);
+	uac1_opts->p_chmask = p_chmask;
+
+	for (i = 0; i < p_srates_cnt; ++i)
+		uac1_opts->p_srates[i] = p_srates[i];
+
+	uac1_opts->p_ssize = p_ssize;
+	uac1_opts->c_chmask = c_chmask;
+
+	for (i = 0; i < c_srates_cnt; ++i)
+		uac1_opts->c_srates[i] = c_srates[i];
+
+	uac1_opts->c_ssize = c_ssize;
+	uac1_opts->req_number = UAC1_DEF_REQ_NUM;
+#else /* CONFIG_GADGET_UAC1_LEGACY */
+	uac1_opts = container_of(fi_uac1, struct f_uac1_legacy_opts, func_inst);
+	uac1_opts->fn_play = fn_play;
+	uac1_opts->fn_cap = fn_cap;
+	uac1_opts->fn_cntl = fn_cntl;
+	uac1_opts->req_buf_size = req_buf_size;
+	uac1_opts->req_count = req_count;
+	uac1_opts->audio_buf_size = audio_buf_size;
+#endif /* CONFIG_GADGET_UAC1_LEGACY */
+#endif
+
+	status = usb_string_ids_tab(cdev, strings_dev);
+	if (status < 0)
+		goto fail;
+	device_desc.iManufacturer = strings_dev[USB_GADGET_MANUFACTURER_IDX].id;
+	device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id;
+
+	if (gadget_is_otg(cdev->gadget) && !otg_desc[0]) {
+		struct usb_descriptor_header *usb_desc;
+
+		usb_desc = usb_otg_descriptor_alloc(cdev->gadget);
+		if (!usb_desc) {
+			status = -ENOMEM;
+			goto fail;
+		}
+		usb_otg_descriptor_init(cdev->gadget, usb_desc);
+		otg_desc[0] = usb_desc;
+		otg_desc[1] = NULL;
+	}
+
+	status = usb_add_config(cdev, &audio_config_driver, audio_do_config);
+	if (status < 0)
+		goto fail_otg_desc;
+	usb_composite_overwrite_options(cdev, &coverwrite);
+
+	INFO(cdev, "%s, version: %s\n", DRIVER_DESC, DRIVER_VERSION);
+	return 0;
+
+fail_otg_desc:
+	kfree(otg_desc[0]);
+	otg_desc[0] = NULL;
+fail:
+#ifndef CONFIG_GADGET_UAC1
+	usb_put_function_instance(fi_uac2);
+#else
+	usb_put_function_instance(fi_uac1);
+#endif
+	return status;
+}
+
+static int audio_unbind(struct usb_composite_dev *cdev)
+{
+#ifdef CONFIG_GADGET_UAC1
+	if (!IS_ERR_OR_NULL(f_uac1))
+		usb_put_function(f_uac1);
+	if (!IS_ERR_OR_NULL(fi_uac1))
+		usb_put_function_instance(fi_uac1);
+#else
+	if (!IS_ERR_OR_NULL(f_uac2))
+		usb_put_function(f_uac2);
+	if (!IS_ERR_OR_NULL(fi_uac2))
+		usb_put_function_instance(fi_uac2);
+#endif
+	kfree(otg_desc[0]);
+	otg_desc[0] = NULL;
+
+	return 0;
+}
+
+static struct usb_composite_driver audio_driver = {
+	.name		= "g_audio",
+	.dev		= &device_desc,
+	.strings	= audio_strings,
+	.max_speed	= USB_SPEED_HIGH,
+	.bind		= audio_bind,
+	.unbind		= audio_unbind,
+};
+
+module_usb_composite_driver(audio_driver);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR("Bryan Wu <cooloney@kernel.org>");
+MODULE_LICENSE("GPL");
+