diff options
| -rw-r--r-- | Documentation/ABI/testing/configfs-usb-gadget-uac2 | 10 | ||||
| -rw-r--r-- | Documentation/usb/gadget-testing.rst | 12 | ||||
| -rw-r--r-- | drivers/usb/gadget/function/f_uac2.c | 656 | ||||
| -rw-r--r-- | drivers/usb/gadget/function/u_uac2.h | 23 |
4 files changed, 638 insertions, 63 deletions
diff --git a/Documentation/ABI/testing/configfs-usb-gadget-uac2 b/Documentation/ABI/testing/configfs-usb-gadget-uac2 index 26fb8e9b4e61..cfd160ff8b56 100644 --- a/Documentation/ABI/testing/configfs-usb-gadget-uac2 +++ b/Documentation/ABI/testing/configfs-usb-gadget-uac2 @@ -9,8 +9,18 @@ Description: c_srate capture sampling rate c_ssize capture sample size (bytes) c_sync capture synchronization type (async/adaptive) + c_mute_present capture mute control enable + c_volume_present capture volume control enable + c_volume_min capture volume control min value (in 1/256 dB) + c_volume_max capture volume control max value (in 1/256 dB) + c_volume_res capture volume control resolution (in 1/256 dB) fb_max maximum extra bandwidth in async mode p_chmask playback channel mask p_srate playback sampling rate p_ssize playback sample size (bytes) + p_mute_present playback mute control enable + p_volume_present playback volume control enable + p_volume_min playback volume control min value (in 1/256 dB) + p_volume_max playback volume control max value (in 1/256 dB) + p_volume_res playback volume control resolution (in 1/256 dB) ========= ============================ diff --git a/Documentation/usb/gadget-testing.rst b/Documentation/usb/gadget-testing.rst index 9d6276f82774..272e51f17f54 100644 --- a/Documentation/usb/gadget-testing.rst +++ b/Documentation/usb/gadget-testing.rst @@ -729,10 +729,20 @@ The uac2 function provides these attributes in its function directory: c_srate capture sampling rate c_ssize capture sample size (bytes) c_sync capture synchronization type (async/adaptive) - fb_max maximum extra bandwidth in async mode + c_mute_present capture mute control enable + c_volume_present capture volume control enable + c_volume_min capture volume control min value (in 1/256 dB) + c_volume_max capture volume control max value (in 1/256 dB) + c_volume_res capture volume control resolution (in 1/256 dB) + fb_max maximum extra bandwidth in async mode p_chmask playback channel mask p_srate playback sampling rate p_ssize playback sample size (bytes) + p_mute_present playback mute control enable + p_volume_present playback volume control enable + p_volume_min playback volume control min value (in 1/256 dB) + p_volume_max playback volume control max value (in 1/256 dB) + p_volume_res playback volume control resolution (in 1/256 dB) req_number the number of pre-allocated request for both capture and playback =============== ==================================================== diff --git a/drivers/usb/gadget/function/f_uac2.c b/drivers/usb/gadget/function/f_uac2.c index ae29ff2b2b68..b9edc6787f79 100644 --- a/drivers/usb/gadget/function/f_uac2.c +++ b/drivers/usb/gadget/function/f_uac2.c @@ -5,6 +5,9 @@ * Copyright (C) 2011 * Yadwinder Singh (yadi.brar01@gmail.com) * Jaswinder Singh (jaswinder.singh@linaro.org) + * + * Copyright (C) 2020 + * Ruslan Bilovol (ruslan.bilovol@gmail.com) */ #include <linux/usb/audio.h> @@ -19,14 +22,16 @@ /* * The driver implements a simple UAC_2 topology. - * USB-OUT -> IT_1 -> OT_3 -> ALSA_Capture - * ALSA_Playback -> IT_2 -> OT_4 -> USB-IN + * USB-OUT -> IT_1 -> FU -> OT_3 -> ALSA_Capture + * ALSA_Playback -> IT_2 -> FU -> OT_4 -> USB-IN * Capture and Playback sampling rates are independently * controlled by two clock sources : * CLK_5 := c_srate, and CLK_6 := p_srate */ #define USB_OUT_CLK_ID (out_clk_src_desc.bClockID) #define USB_IN_CLK_ID (in_clk_src_desc.bClockID) +#define USB_OUT_FU_ID (out_feature_unit_desc->bUnitID) +#define USB_IN_FU_ID (in_feature_unit_desc->bUnitID) #define CONTROL_ABSENT 0 #define CONTROL_RDONLY 1 @@ -34,6 +39,8 @@ #define CLK_FREQ_CTRL 0 #define CLK_VLD_CTRL 2 +#define FU_MUTE_CTRL 0 +#define FU_VOL_CTRL 2 #define COPY_CTRL 0 #define CONN_CTRL 2 @@ -44,12 +51,24 @@ #define EPIN_EN(_opts) ((_opts)->p_chmask != 0) #define EPOUT_EN(_opts) ((_opts)->c_chmask != 0) +#define FUIN_EN(_opts) (EPIN_EN(_opts) \ + && ((_opts)->p_mute_present \ + || (_opts)->p_volume_present)) +#define FUOUT_EN(_opts) (EPOUT_EN(_opts) \ + && ((_opts)->c_mute_present \ + || (_opts)->c_volume_present)) #define EPOUT_FBACK_IN_EN(_opts) ((_opts)->c_sync == USB_ENDPOINT_SYNC_ASYNC) struct f_uac2 { struct g_audio g_audio; u8 ac_intf, as_in_intf, as_out_intf; u8 ac_alt, as_in_alt, as_out_alt; /* needed for get_alt() */ + + struct usb_ctrlrequest setup_cr; /* will be used in data stage */ + + /* Interrupt IN endpoint of AC interface */ + struct usb_ep *int_ep; + atomic_t int_count; }; static inline struct f_uac2 *func_to_uac2(struct usb_function *f) @@ -63,6 +82,8 @@ struct f_uac2_opts *g_audio_to_uac2_opts(struct g_audio *agdev) return container_of(agdev->func.fi, struct f_uac2_opts, func_inst); } +static int afunc_notify(struct g_audio *agdev, int unit_id, int cs); + /* --------- USB Function Interface ------------- */ enum { @@ -74,6 +95,8 @@ enum { STR_IO_IT, STR_USB_OT, STR_IO_OT, + STR_FU_IN, + STR_FU_OUT, STR_AS_OUT_ALT0, STR_AS_OUT_ALT1, STR_AS_IN_ALT0, @@ -92,6 +115,8 @@ static struct usb_string strings_fn[] = { [STR_IO_IT].s = "USBD Out", [STR_USB_OT].s = "USBH In", [STR_IO_OT].s = "USBD In", + [STR_FU_IN].s = "Capture Volume", + [STR_FU_OUT].s = "Playback Volume", [STR_AS_OUT_ALT0].s = "Playback Inactive", [STR_AS_OUT_ALT1].s = "Playback Active", [STR_AS_IN_ALT0].s = "Capture Inactive", @@ -126,7 +151,7 @@ static struct usb_interface_descriptor std_ac_if_desc = { .bDescriptorType = USB_DT_INTERFACE, .bAlternateSetting = 0, - .bNumEndpoints = 0, + /* .bNumEndpoints = DYNAMIC */ .bInterfaceClass = USB_CLASS_AUDIO, .bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL, .bInterfaceProtocol = UAC_VERSION_2, @@ -212,6 +237,9 @@ static struct uac2_output_terminal_descriptor io_out_ot_desc = { .bmControls = cpu_to_le16(CONTROL_RDWR << COPY_CTRL), }; +static struct uac2_feature_unit_descriptor *in_feature_unit_desc; +static struct uac2_feature_unit_descriptor *out_feature_unit_desc; + static struct uac2_ac_header_descriptor ac_hdr_desc = { .bLength = sizeof ac_hdr_desc, .bDescriptorType = USB_DT_CS_INTERFACE, @@ -223,6 +251,36 @@ static struct uac2_ac_header_descriptor ac_hdr_desc = { .bmControls = 0, }; +/* AC IN Interrupt Endpoint */ +static struct usb_endpoint_descriptor fs_ep_int_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_INT, + .wMaxPacketSize = cpu_to_le16(6), + .bInterval = 1, +}; + +static struct usb_endpoint_descriptor hs_ep_int_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bmAttributes = USB_ENDPOINT_XFER_INT, + .wMaxPacketSize = cpu_to_le16(6), + .bInterval = 4, +}; + +static struct usb_endpoint_descriptor ss_ep_int_desc = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_INT, + .wMaxPacketSize = cpu_to_le16(6), + .bInterval = 4, +}; + /* Audio Streaming OUT Interface - Alt0 */ static struct usb_interface_descriptor std_as_out_if0_desc = { .bLength = sizeof std_as_out_if0_desc, @@ -452,10 +510,14 @@ static struct usb_descriptor_header *fs_audio_desc[] = { (struct usb_descriptor_header *)&in_clk_src_desc, (struct usb_descriptor_header *)&out_clk_src_desc, (struct usb_descriptor_header *)&usb_out_it_desc, + (struct usb_descriptor_header *)&out_feature_unit_desc, (struct usb_descriptor_header *)&io_in_it_desc, (struct usb_descriptor_header *)&usb_in_ot_desc, + (struct usb_descriptor_header *)&in_feature_unit_desc, (struct usb_descriptor_header *)&io_out_ot_desc, + (struct usb_descriptor_header *)&fs_ep_int_desc, + (struct usb_descriptor_header *)&std_as_out_if0_desc, (struct usb_descriptor_header *)&std_as_out_if1_desc, @@ -483,10 +545,14 @@ static struct usb_descriptor_header *hs_audio_desc[] = { (struct usb_descriptor_header *)&in_clk_src_desc, (struct usb_descriptor_header *)&out_clk_src_desc, (struct usb_descriptor_header *)&usb_out_it_desc, + (struct usb_descriptor_header *)&out_feature_unit_desc, (struct usb_descriptor_header *)&io_in_it_desc, (struct usb_descriptor_header *)&usb_in_ot_desc, + (struct usb_descriptor_header *)&in_feature_unit_desc, (struct usb_descriptor_header *)&io_out_ot_desc, + (struct usb_descriptor_header *)&hs_ep_int_desc, + (struct usb_descriptor_header *)&std_as_out_if0_desc, (struct usb_descriptor_header *)&std_as_out_if1_desc, @@ -514,10 +580,14 @@ static struct usb_descriptor_header *ss_audio_desc[] = { (struct usb_descriptor_header *)&in_clk_src_desc, (struct usb_descriptor_header *)&out_clk_src_desc, (struct usb_descriptor_header *)&usb_out_it_desc, + (struct usb_descriptor_header *)&out_feature_unit_desc, (struct usb_descriptor_header *)&io_in_it_desc, (struct usb_descriptor_header *)&usb_in_ot_desc, + (struct usb_descriptor_header *)&in_feature_unit_desc, (struct usb_descriptor_header *)&io_out_ot_desc, + (struct usb_descriptor_header *)&ss_ep_int_desc, + (struct usb_descriptor_header *)&std_as_out_if0_desc, (struct usb_descriptor_header *)&std_as_out_if1_desc, @@ -539,6 +609,17 @@ static struct usb_descriptor_header *ss_audio_desc[] = { NULL, }; +struct cntrl_cur_lay2 { + __le16 wCUR; +}; + +struct cntrl_range_lay2 { + __le16 wNumSubRanges; + __le16 wMIN; + __le16 wMAX; + __le16 wRES; +} __packed; + struct cntrl_cur_lay3 { __le32 dCUR; }; @@ -595,6 +676,26 @@ static int set_ep_max_packet_size(const struct f_uac2_opts *uac2_opts, return 0; } +static struct uac2_feature_unit_descriptor *build_fu_desc(int chmask) +{ + struct uac2_feature_unit_descriptor *fu_desc; + int channels = num_channels(chmask); + int fu_desc_size = UAC2_DT_FEATURE_UNIT_SIZE(channels); + + fu_desc = kzalloc(fu_desc_size, GFP_KERNEL); + if (!fu_desc) + return NULL; + + fu_desc->bLength = fu_desc_size; + fu_desc->bDescriptorType = USB_DT_CS_INTERFACE; + + fu_desc->bDescriptorSubtype = UAC_FEATURE_UNIT; + + /* bUnitID, bSourceID and bmaControls will be defined later */ + + return fu_desc; +} + /* Use macro to overcome line length limitation */ #define USBDHDR(p) (struct usb_descriptor_header *)(p) @@ -607,6 +708,7 @@ static void setup_headers(struct f_uac2_opts *opts, struct usb_endpoint_descriptor *epout_desc; struct usb_endpoint_descriptor *epin_desc; struct usb_endpoint_descriptor *epin_fback_desc; + struct usb_endpoint_descriptor *ep_int_desc; int i; switch (speed) { @@ -614,11 +716,13 @@ static void setup_headers(struct f_uac2_opts *opts, epout_desc = &fs_epout_desc; epin_desc = &fs_epin_desc; epin_fback_desc = &fs_epin_fback_desc; + ep_int_desc = &fs_ep_int_desc; break; case USB_SPEED_HIGH: epout_desc = &hs_epout_desc; epin_desc = &hs_epin_desc; epin_fback_desc = &hs_epin_fback_desc; + ep_int_desc = &hs_ep_int_desc; break; default: epout_desc = &ss_epout_desc; @@ -626,6 +730,7 @@ static void setup_headers(struct f_uac2_opts *opts, epout_desc_comp = &ss_epout_desc_comp; epin_desc_comp = &ss_epin_desc_comp; epin_fback_desc = &ss_epin_fback_desc; + ep_int_desc = &ss_ep_int_desc; } i = 0; @@ -637,13 +742,27 @@ static void setup_headers(struct f_uac2_opts *opts, if (EPOUT_EN(opts)) { headers[i++] = USBDHDR(&out_clk_src_desc); headers[i++] = USBDHDR(&usb_out_it_desc); - } + + if (FUOUT_EN(opts)) + headers[i++] = USBDHDR(out_feature_unit_desc); + } + if (EPIN_EN(opts)) { headers[i++] = USBDHDR(&io_in_it_desc); + + if (FUIN_EN(opts)) + headers[i++] = USBDHDR(in_feature_unit_desc); + headers[i++] = USBDHDR(&usb_in_ot_desc); } - if (EPOUT_EN(opts)) { + + if (EPOUT_EN(opts)) headers[i++] = USBDHDR(&io_out_ot_desc); + + if (FUOUT_EN(opts) || FUIN_EN(opts)) + headers[i++] = USBDHDR(ep_int_desc); + + if (EPOUT_EN(opts)) { headers[i++] = USBDHDR(&std_as_out_if0_desc); headers[i++] = USBDHDR(&std_as_out_if1_desc); headers[i++] = USBDHDR(&as_out_hdr_desc); @@ -657,6 +776,7 @@ static void setup_headers(struct f_uac2_opts *opts, if (EPOUT_FBACK_IN_EN(opts)) headers[i++] = USBDHDR(epin_fback_desc); } + if (EPIN_EN(opts)) { headers[i++] = USBDHDR(&std_as_in_if0_desc); headers[i++] = USBDHDR(&std_as_in_if1_desc); @@ -684,17 +804,35 @@ static void setup_descriptor(struct f_uac2_opts *opts) io_out_ot_desc.bTerminalID = i++; if (EPIN_EN(opts)) usb_in_ot_desc.bTerminalID = i++; + if (FUOUT_EN(opts)) + out_feature_unit_desc->bUnitID = i++; + if (FUIN_EN(opts)) + in_feature_unit_desc->bUnitID = i++; if (EPOUT_EN(opts)) out_clk_src_desc.bClockID = i++; if (EPIN_EN(opts)) in_clk_src_desc.bClockID = i++; usb_out_it_desc.bCSourceID = out_clk_src_desc.bClockID; - usb_in_ot_desc.bSourceID = io_in_it_desc.bTerminalID; + + if (FUIN_EN(opts)) { + usb_in_ot_desc.bSourceID = in_feature_unit_desc->bUnitID; + in_feature_unit_desc->bSourceID = io_in_it_desc.bTerminalID; + } else { + usb_in_ot_desc.bSourceID = io_in_it_desc.bTerminalID; + } + usb_in_ot_desc.bCSourceID = in_clk_src_desc.bClockID; io_in_it_desc.bCSourceID = in_clk_src_desc.bClockID; io_out_ot_desc.bCSourceID = out_clk_src_desc.bClockID; - io_out_ot_desc.bSourceID = usb_out_it_desc.bTerminalID; + + if (FUOUT_EN(opts)) { + io_out_ot_desc.bSourceID = out_feature_unit_desc->bUnitID; + out_feature_unit_desc->bSourceID = usb_out_it_desc.bTerminalID; + } else { + io_out_ot_desc.bSourceID = usb_out_it_desc.bTerminalID; + } + as_out_hdr_desc.bTerminalLink = usb_out_it_desc.bTerminalID; as_in_hdr_desc.bTerminalLink = usb_in_ot_desc.bTerminalID; @@ -706,6 +844,10 @@ static void setup_descriptor(struct f_uac2_opts *opts) len += sizeof(in_clk_src_desc); len += sizeof(usb_in_ot_desc); + + if (FUIN_EN(opts)) + len += in_feature_unit_desc->bLength; + len += sizeof(io_in_it_desc); ac_hdr_desc.wTotalLength = cpu_to_le16(len); iad_desc.bInterfaceCount++; @@ -715,6 +857,10 @@ static void setup_descriptor(struct f_uac2_opts *opts) len += sizeof(out_clk_src_desc); len += sizeof(usb_out_it_desc); + + if (FUOUT_EN(opts)) + len += out_feature_unit_desc->bLength; + len += sizeof(io_out_ot_desc); ac_hdr_desc.wTotalLength = cpu_to_le16(len); iad_desc.bInterfaceCount++; @@ -752,6 +898,28 @@ static int afunc_validate_opts(struct g_audio *agdev, struct device *dev) return -EINVAL; } + if (opts->p_volume_max <= opts->p_volume_min) { + dev_err(dev, "Error: incorrect playback volume max/min\n"); + return -EINVAL; + } else if (opts->c_volume_max <= opts->c_volume_min) { + dev_err(dev, "Error: incorrect capture volume max/min\n"); + return -EINVAL; + } else if (opts->p_volume_res <= 0) { + dev_err(dev, "Error: negative/zero playback volume resolution\n"); + return -EINVAL; + } else if (opts->c_volume_res <= 0) { + dev_err(dev, "Error: negative/zero capture volume resolution\n"); + return -EINVAL; + } + + if ((opts->p_volume_max - opts->p_volume_min) % opts->p_volume_res) { + dev_err(dev, "Error: incorrect playback volume resolution\n"); + return -EINVAL; + } else if ((opts->c_volume_max - opts->c_volume_min) % opts->c_volume_res) { + dev_err(dev, "Error: incorrect capture volume resolution\n"); + return -EINVAL; + } + return 0; } @@ -774,6 +942,20 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) us = usb_gstrings_attach(cdev, fn_strings, ARRAY_SIZE(strings_fn)); if (IS_ERR(us)) return PTR_ERR(us); + + if (FUOUT_EN(uac2_opts)) { + out_feature_unit_desc = build_fu_desc(uac2_opts->c_chmask); + if (!out_feature_unit_desc) + return -ENOMEM; + } + if (FUIN_EN(uac2_opts)) { + in_feature_unit_desc = build_fu_desc(uac2_opts->p_chmask); + if (!in_feature_unit_desc) { + ret = -ENOMEM; + goto err_free_fu; + } + } + iad_desc.iFunction = us[STR_ASSOC].id; std_ac_if_desc.iInterface = us[STR_IF_CTRL].id; in_clk_src_desc.iClockSource = us[STR_CLKSRC_IN].id; @@ -787,6 +969,21 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) std_as_in_if0_desc.iInterface = us[STR_AS_IN_ALT0].id; std_as_in_if1_desc.iInterface = us[STR_AS_IN_ALT1].id; + if (FUOUT_EN(uac2_opts)) { + u8 *i_feature = (u8 *)out_feature_unit_desc; + + i_feature = (u8 *)out_feature_unit_desc + + out_feature_unit_desc->bLength - 1; + *i_feature = us[STR_FU_OUT].id; + } + if (FUIN_EN(uac2_opts)) { + u8 *i_feature = (u8 *)in_feature_unit_desc; + + i_feature = (u8 *)in_feature_unit_desc + + in_feature_unit_desc->bLength - 1; + *i_feature = us[STR_FU_IN].id; + } + /* Initialize the configurable parameters */ usb_out_it_desc.bNrChannels = num_channels(uac2_opts->c_chmask); @@ -801,6 +998,26 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) as_out_fmt1_desc.bBitResolution = uac2_opts->c_ssize * 8; as_in_fmt1_desc.bSubslotSize = uac2_opts->p_ssize; as_in_fmt1_desc.bBitResolution = uac2_opts->p_ssize * 8; + if (FUOUT_EN(uac2_opts)) { + __le32 *bma = (__le32 *)&out_feature_unit_desc->bmaControls[0]; + u32 control = 0; + + if (uac2_opts->c_mute_present) + control |= CONTROL_RDWR << FU_MUTE_CTRL; + if (uac2_opts->c_volume_present) + control |= CONTROL_RDWR << FU_VOL_CTRL; + *bma = cpu_to_le32(control); + } + if (FUIN_EN(uac2_opts)) { + __le32 *bma = (__le32 *)&in_feature_unit_desc->bmaControls[0]; + u32 control = 0; + + if (uac2_opts->p_mute_present) + control |= CONTROL_RDWR << FU_MUTE_CTRL; + if (uac2_opts->p_volume_present) + control |= CONTROL_RDWR << FU_VOL_CTRL; + *bma = cpu_to_le32(control); + } snprintf(clksrc_in, sizeof(clksrc_in), "%uHz", uac2_opts->p_srate); snprintf(clksrc_out, sizeof(clksrc_out), "%uHz", uac2_opts->c_srate); @@ -808,7 +1025,7 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) ret = usb_interface_id(cfg, fn); if (ret < 0) { dev_err(dev, "%s:%d Error!\n", __func__, __LINE__); - return ret; + goto err_free_fu; } iad_desc.bFirstInterface = ret; @@ -820,7 +1037,7 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) ret = usb_interface_id(cfg, fn); if (ret < 0) { dev_err(dev, "%s:%d Error!\n", __func__, __LINE__); - return ret; + goto err_free_fu; } std_as_out_if0_desc.bInterfaceNumber = ret; std_as_out_if1_desc.bInterfaceNumber = ret; @@ -849,7 +1066,7 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) ret = usb_interface_id(cfg, fn); if (ret < 0) { dev_err(dev, "%s:%d Error!\n", __func__, __LINE__); - return ret; + goto err_free_fu; } std_as_in_if0_desc.bInterfaceNumber = ret; std_as_in_if1_desc.bInterfaceNumber = ret; @@ -857,6 +1074,17 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) uac2->as_in_alt = 0; } + if (FUOUT_EN(uac2_opts) || FUIN_EN(uac2_opts)) { + uac2->int_ep = usb_ep_autoconfig(gadget, &fs_ep_int_desc); + if (!uac2->int_ep) { + dev_err(dev, "%s:%d Error!\n", __func__, __LINE__); + ret = -ENODEV; + goto err_free_fu; + } + + std_ac_if_desc.bNumEndpoints = 1; + } + /* Calculate wMaxPacketSize according to audio bandwidth */ ret = set_ep_max_packet_size(uac2_opts, &fs_epin_desc, USB_SPEED_FULL, true); @@ -904,7 +1132,8 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) agdev->out_ep = usb_ep_autoconfig(gadget, &fs_epout_desc); if (!agdev->out_ep) { dev_err(dev, "%s:%d Error!\n", __func__, __LINE__); - return -ENODEV; + ret = -ENODEV; + goto err_free_fu; } if (EPOUT_FBACK_IN_EN(uac2_opts)) { agdev->in_ep_fback = usb_ep_autoconfig(gadget, @@ -912,7 +1141,8 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) if (!agdev->in_ep_fback) { dev_err(dev, "%s:%d Error!\n", __func__, __LINE__); - return -ENODEV; + ret = -ENODEV; + goto err_free_fu; } } } @@ -921,7 +1151,8 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) agdev->in_ep = usb_ep_autoconfig(gadget, &fs_epin_desc); if (!agdev->in_ep) { dev_err(dev, "%s:%d Error!\n", __func__, __LINE__); - return -ENODEV; + ret = -ENODEV; + goto err_free_fu; } } @@ -937,38 +1168,137 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn) agdev->out_ep_maxpsize = max_t(u16, agdev->out_ep_maxpsize, le16_to_cpu(ss_epout_desc.wMaxPacketSize)); + // HS and SS endpoint addresses are copied from autoconfigured FS descriptors + hs_ep_int_desc.bEndpointAddress = fs_ep_int_desc.bEndpointAddress; hs_epout_desc.bEndpointAddress = fs_epout_desc.bEndpointAddress; hs_epin_fback_desc.bEndpointAddress = fs_epin_fback_desc.bEndpointAddress; hs_epin_desc.bEndpointAddress = fs_epin_desc.bEndpointAddress; ss_epout_desc.bEndpointAddress = fs_epout_desc.bEndpointAddress; ss_epin_fback_desc.bEndpointAddress = fs_epin_fback_desc.bEndpointAddress; ss_epin_desc.bEndpointAddress = fs_epin_desc.bEndpointAddress; + ss_ep_int_desc.bEndpointAddress = fs_ep_int_desc.bEndpointAddress; setup_descriptor(uac2_opts); ret = usb_assign_descriptors(fn, fs_audio_desc, hs_audio_desc, ss_audio_desc, ss_audio_desc); if (ret) - return ret; + goto err_free_fu; agdev->gadget = gadget; agdev->params.p_chmask = uac2_opts->p_chmask; agdev->params.p_srate = uac2_opts->p_srate; agdev->params.p_ssize = uac2_opts->p_ssize; + if (FUIN_EN(uac2_opts)) { + agdev->params.p_fu.id = USB_IN_FU_ID; + agdev->params.p_fu.mute_present = uac2_opts->p_mute_present; + agdev->params.p_fu.volume_present = uac2_opts->p_volume_present; + agdev->params.p_fu.volume_min = uac2_opts->p_volume_min; + agdev->params.p_fu.volume_max = uac2_opts->p_volume_max; + agdev->params.p_fu.volume_res = uac2_opts->p_volume_res; + } agdev->params.c_chmask = uac2_opts->c_chmask; agdev->params.c_srate = uac2_opts->c_srate; agdev->params.c_ssize = uac2_opts->c_ssize; + if (FUOUT_EN(uac2_opts)) { + agdev->params.c_fu.id = USB_OUT_FU_ID; + agdev->params.c_fu.mute_present = uac2_opts->c_mute_present; + agdev->params.c_fu.volume_present = uac2_opts->c_volume_present; + agdev->params.c_fu.volume_min = uac2_opts->c_volume_min; + agdev->params.c_fu.volume_max = uac2_opts->c_volume_max; + agdev->params.c_fu.volume_res = uac2_opts->c_volume_res; + } agdev->params.req_number = uac2_opts->req_number; agdev->params.fb_max = uac2_opts->fb_max; + + if (FUOUT_EN(uac2_opts) || FUIN_EN(uac2_opts)) + agdev->notify = afunc_notify; + ret = g_audio_setup(agdev, "UAC2 PCM", "UAC2_Gadget"); if (ret) goto err_free_descs; + return 0; err_free_descs: usb_free_all_descriptors(fn); agdev->gadget = NULL; +err_free_fu: + kfree(out_feature_unit_desc); + out_feature_unit_desc = NULL; + kfree(in_feature_unit_desc); + in_feature_unit_desc = NULL; + return ret; +} + +static void +afunc_notify_complete(struct usb_ep *_ep, struct usb_request *req) +{ + struct g_audio *agdev = req->context; + struct f_uac2 *uac2 = func_to_uac2(&agdev->func); + + atomic_dec(&uac2->int_count); + kfree(req->buf); + usb_ep_free_request(_ep, req); +} + +static int +afunc_notify(struct g_audio *agdev, int unit_id, int cs) +{ + struct f_uac2 *uac2 = func_to_uac2(&agdev->func); + struct usb_request *req; + struct uac2_interrupt_data_msg *msg; + u16 w_index, w_value; + int ret; + + if (!uac2->int_ep->enabled) + return 0; + + if (atomic_inc_return(&uac2->int_count) > UAC2_DEF_INT_REQ_NUM) { + atomic_dec(&uac2->int_count); + return 0; + } + + req = usb_ep_alloc_request(uac2->int_ep, GFP_ATOMIC); + if (req == NULL) { + ret = -ENOMEM; + goto err_dec_int_count; + } + + msg = kzalloc(sizeof(*msg), GFP_ATOMIC); + if (msg == NULL) { + ret = -ENOMEM; + goto err_free_request; + } + + w_index = unit_id << 8 | uac2->ac_intf; + w_value = cs << 8; + + msg->bInfo = 0; /* Non-vendor, interface interrupt */ + msg->bAttribute = UAC2_CS_CUR; + msg->wIndex = cpu_to_le16(w_index); + msg->wValue = cpu_to_le16(w_value); + + req->length = sizeof(*msg); + req->buf = msg; + req->context = agdev; + req->complete = afunc_notify_complete; + + ret = usb_ep_queue(uac2->int_ep, req, GFP_ATOMIC); + + if (ret) + goto err_free_msg; + + return 0; + +err_free_msg: + kfree(msg); +err_free_request: + usb_ep_free_request(uac2->int_ep, req); +err_dec_int_count: + atomic_dec(&uac2->int_count); + return ret; } @@ -977,6 +1307,7 @@ afunc_set_alt(struct usb_function *fn, unsigned intf, unsigned alt) { struct usb_composite_dev *cdev = fn->config->cdev; struct f_uac2 *uac2 = func_to_uac2(fn); + struct g_audio *agdev = func_to_g_audio(fn); struct usb_gadget *gadget = cdev->gadget; struct device *dev = &gadget->dev; int ret = 0; @@ -993,6 +1324,14 @@ afunc_set_alt(struct usb_function *fn, unsigned intf, unsigned alt) dev_err(dev, "%s:%d Error!\n", __func__, __LINE__); return -EINVAL; } + + /* restart interrupt endpoint */ + if (uac2->int_ep) { + usb_ep_disable(uac2->int_ep); + config_ep_by_speed(gadget, &agdev->func, uac2->int_ep); + usb_ep_enable(uac2->int_ep); + } + return 0; } @@ -1047,6 +1386,8 @@ afunc_disable(struct usb_function *fn) uac2->as_out_alt = 0; u_audio_stop_capture(&uac2->g_audio); u_audio_stop_playback(&uac2->g_audio); + if (uac2->int_ep) + usb_ep_disable(uac2->int_ep); } static int @@ -1054,7 +1395,7 @@ in_rq_cur(struct usb_function *fn, const struct usb_ctrlrequest *cr) { struct usb_request *req = fn->config->cdev->req; struct g_audio *agdev = func_to_g_audio(fn); - struct f_uac2_opts *opts; + struct f_uac2_opts *opts = g_audio_to_uac2_opts(agdev); u16 w_length = le16_to_cpu(cr->wLength); u16 w_index = le16_to_cpu(cr->wIndex); u16 w_value = le16_to_cpu(cr->wValue); @@ -1063,28 +1404,64 @@ in_rq_cur(struct usb_function *fn, const struct usb_ctrlrequest *cr) int value = -EOPNOTSUPP; int p_srate, c_srate; - opts = g_audio_to_uac2_opts(agdev); p_srate = opts->p_srate; c_srate = opts->c_srate; - if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) { - struct cntrl_cur_lay3 c; - memset(&c, 0, sizeof(struct cntrl_cur_lay3)); + if ((entity_id == USB_IN_CLK_ID) || (entity_id == USB_OUT_CLK_ID)) { + if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) { + struct cntrl_cur_lay3 c; + + memset(&c, 0, sizeof(struct cntrl_cur_lay3)); + + if (entity_id == USB_IN_CLK_ID) + c.dCUR = cpu_to_le32(p_srate); + else if (entity_id == USB_OUT_CLK_ID) + c.dCUR = cpu_to_le32(c_srate); + + value = min_t(unsigned int, w_length, sizeof(c)); + memcpy(req->buf, &c, value); + } else if (control_selector == UAC2_CS_CONTROL_CLOCK_VALID) { + *(u8 *)req->buf = 1; + value = min_t(unsigned int, w_length, 1); + } else { + dev_err(&agdev->gadget->dev, + "%s:%d control_selector=%d TODO!\n", + __func__, __LINE__, control_selector); + } + } else if ((FUIN_EN(opts) && (entity_id == USB_IN_FU_ID)) || + (FUOUT_EN(opts) && (entity_id == USB_OUT_FU_ID))) { + unsigned int is_playback = 0; - if (entity_id == USB_IN_CLK_ID) - c.dCUR = cpu_to_le32(p_srate); - else if (entity_id == USB_OUT_CLK_ID) - c.dCUR = cpu_to_le32(c_srate); + if (FUIN_EN(opts) && (entity_id == USB_IN_FU_ID)) + is_playback = 1; - value = min_t(unsigned, w_length, sizeof c); - memcpy(req->buf, &c, value); - } else if (control_selector == UAC2_CS_CONTROL_CLOCK_VALID) { - *(u8 *)req->buf = 1; - value = min_t(unsigned, w_length, 1); + if (control_selector == UAC_FU_MUTE) { + unsigned int mute; + + u_audio_get_mute(agdev, is_playback, &mute); + + *(u8 *)req->buf = mute; + value = min_t(unsigned int, w_length, 1); + } else if (control_selector == UAC_FU_VOLUME) { + struct cntrl_cur_lay2 c; + s16 volume; + + memset(&c, 0, sizeof(struct cntrl_cur_lay2)); + + u_audio_get_volume(agdev, is_playback, &volume); + c.wCUR = cpu_to_le16(volume); + + value = min_t(unsigned int, w_length, sizeof(c)); + memcpy(req->buf, &c, value); + } else { + dev_err(&agdev->gadget->dev, + "%s:%d control_selector=%d TODO!\n", + __func__, __LINE__, control_selector); + } } else { dev_err(&agdev->gadget->dev, - "%s:%d control_selector=%d TODO!\n", - __func__, __LINE__, control_selector); + "%s:%d entity_id=%d control_selector=%d TODO!\n", + __func__, __LINE__, entity_id, control_selector); } return value; @@ -1095,38 +1472,77 @@ in_rq_range(struct usb_function *fn, const struct usb_ctrlrequest *cr) { struct usb_request *req = fn->config->cdev->req; struct g_audio *agdev = func_to_g_audio(fn); - struct f_uac2_opts *opts; + struct f_uac2_opts *opts = g_audio_to_uac2_opts(agdev); u16 w_length = le16_to_cpu(cr->wLength); u16 w_index = le16_to_cpu(cr->wIndex); u16 w_value = le16_to_cpu(cr->wValue); u8 entity_id = (w_index >> 8) & 0xff; u8 control_selector = w_value >> 8; - struct cntrl_range_lay3 r; int value = -EOPNOTSUPP; int p_srate, c_srate; - opts = g_audio_to_uac2_opts(agdev); p_srate = opts->p_srate; c_srate = opts->c_srate; - if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) { - if (entity_id == USB_IN_CLK_ID) - r.dMIN = cpu_to_le32(p_srate); - else if (entity_id == USB_OUT_CLK_ID) - r.dMIN = cpu_to_le32(c_srate); - else - return -EOPNOTSUPP; + if ((entity_id == USB_IN_CLK_ID) || (entity_id == USB_OUT_CLK_ID)) { + if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) { + struct cntrl_range_lay3 r; + + if (entity_id == USB_IN_CLK_ID) + r.dMIN = cpu_to_le32(p_srate); + else if (entity_id == USB_OUT_CLK_ID) + r.dMIN = cpu_to_le32(c_srate); + else + return -EOPNOTSUPP; - r.dMAX = r.dMIN; - r.dRES = 0; - r.wNumSubRanges = cpu_to_le16(1); + r.dMAX = r.dMIN; + r.dRES = 0; + r.wNumSubRanges = cpu_to_le16(1); - value = min_t(unsigned, w_length, sizeof r); - memcpy(req->buf, &r, value); + value = min_t(unsigned int, w_length, sizeof(r)); + memcpy(req->buf, &r, value); + } else { + dev_err(&agdev->gadget->dev, + "%s:%d control_selector=%d TODO!\n", + __func__, __LINE__, control_selector); + } + } else if ((FUIN_EN(opts) && (entity_id == USB_IN_FU_ID)) || + (FUOUT_EN(opts) && (entity_id == USB_OUT_FU_ID))) { + unsigned int is_playback = 0; + + if (FUIN_EN(opts) && (entity_id == USB_IN_FU_ID)) + is_playback = 1; + + if (control_selector == UAC_FU_VOLUME) { + struct cntrl_range_lay2 r; + s16 max_db, min_db, res_db; + + if (is_playback) { + max_db = opts->p_volume_max; + min_db = opts->p_volume_min; + res_db = opts->p_volume_res; + } else { + max_db = opts->c_volume_max; + min_db = opts->c_volume_min; + res_db = opts->c_volume_res; + } + + r.wMAX = cpu_to_le16(max_db); + r.wMIN = cpu_to_le16(min_db); + r.wRES = cpu_to_le16(res_db); + r.wNumSubRanges = cpu_to_le16(1); + + value = min_t(unsigned int, w_length, sizeof(r)); + memcpy(req->buf, &r, value); + } else { + dev_err(&agdev->gadget->dev, + "%s:%d control_selector=%d TODO!\n", + __func__, __LINE__, control_selector); + } } else { dev_err(&agdev->gadget->dev, - "%s:%d control_selector=%d TODO!\n", - __func__, __LINE__, control_selector); + "%s:%d entity_id=%d control_selector=%d TODO!\n", + __func__, __LINE__, entity_id, control_selector); } return value; @@ -1143,16 +1559,82 @@ ac_rq_in(struct usb_function *fn, const struct usb_ctrlrequest *cr) return -EOPNOTSUPP; } +static void +out_rq_cur_complete(struct usb_ep *ep, struct usb_request *req) +{ + struct g_audio *agdev = req->context; + struct usb_composite_dev *cdev = agdev->func.config->cdev; + struct f_uac2_opts *opts = g_audio_to_uac2_opts(agdev); + struct f_uac2 *uac2 = func_to_uac2(&agdev->func); + struct usb_ctrlrequest *cr = &uac2->setup_cr; + u16 w_index = le16_to_cpu(cr->wIndex); + u16 w_value = le16_to_cpu(cr->wValue); + u8 entity_id = (w_index >> 8) & 0xff; + u8 control_selector = w_value >> 8; + + if (req->status != 0) { + dev_dbg(&cdev->gadget->dev, "completion err %d\n", req->status); + return; + } + + if ((FUIN_EN(opts) && (entity_id == USB_IN_FU_ID)) || + (FUOUT_EN(opts) && (entity_id == USB_OUT_FU_ID))) { + unsigned int is_playback = 0; + + if (FUIN_EN(opts) && (entity_id == USB_IN_FU_ID)) + is_playback = 1; + + if (control_selector == UAC_FU_MUTE) { + u8 mute = *(u8 *)req->buf; + + u_audio_set_mute(agdev, is_playback, mute); + + return; + } else if (control_selector == UAC_FU_VOLUME) { + struct cntrl_cur_lay2 *c = req->buf; + s16 volume; + + volume = le16_to_cpu(c->wCUR); + u_audio_set_volume(agdev, is_playback, volume); + + return; + } else { + dev_err(&agdev->gadget->dev, + "%s:%d control_selector=%d TODO!\n", + __func__, __LINE__, control_selector); + usb_ep_set_halt(ep); + } + } +} + static int out_rq_cur(struct usb_function *fn, const struct usb_ctrlrequest *cr) { + struct usb_request *req = fn->config->cdev->req; + struct g_audio *agdev = func_to_g_audio(fn); + struct f_uac2_opts *opts = g_audio_to_uac2_opts(agdev); + struct f_uac2 *uac2 = func_to_uac2(fn); u16 w_length = le16_to_cpu(cr->wLength); + u16 w_index = le16_to_cpu(cr->wIndex); u16 w_value = le16_to_cpu(cr->wValue); + u8 entity_id = (w_index >> 8) & 0xff; u8 control_selector = w_value >> 8; - if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) - return w_length; + if ((entity_id == USB_IN_CLK_ID) || (entity_id == USB_OUT_CLK_ID)) { + if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) + return w_length; + } else if ((FUIN_EN(opts) && (entity_id == USB_IN_FU_ID)) || + (FUOUT_EN(opts) && (entity_id == USB_OUT_FU_ID))) { + memcpy(&uac2->setup_cr, cr, sizeof(*cr)); + req->context = agdev; + req->complete = out_rq_cur_complete; + return w_length; + } else { + dev_err(&agdev->gadget->dev, + "%s:%d entity_id=%d control_selector=%d TODO!\n", + __func__, __LINE__, entity_id, control_selector); + } return -EOPNOTSUPP; } @@ -1228,7 +1710,15 @@ static struct configfs_item_operations f_uac2_item_ops = { .release = f_uac2_attr_release, }; -#define UAC2_ATTRIBUTE(name) \ +#define uac2_kstrtou32 kstrtou32 +#define uac2_kstrtos16 kstrtos16 +#define uac2_kstrtobool(s, base, res) kstrtobool((s), (res)) + +static const char *u32_fmt = "%u\n"; +static const char *s16_fmt = "%hd\n"; +static const char *bool_fmt = "%u\n"; + +#define UAC2_ATTRIBUTE(type, name) \ static ssize_t f_uac2_opts_##name##_show(struct config_item *item, \ char *page) \ { \ @@ -1236,7 +1726,7 @@ static ssize_t f_uac2_opts_##name##_show(struct config_item *item, \ int result; \ \ mutex_lock(&opts->lock); \ - result = sprintf(page, "%u\n", opts->name); \ + result = sprintf(page, type##_fmt, opts->name); \ mutex_unlock(&opts->lock); \ \ return result; \ @@ -1247,7 +1737,7 @@ static ssize_t f_uac2_opts_##name##_store(struct config_item *item, \ { \ struct f_uac2_opts *opts = to_f_uac2_opts(item); \ int ret; \ - u32 num; \ + type num; \ \ mutex_lock(&opts->lock); \ if (opts->refcnt) { \ @@ -1255,7 +1745,7 @@ static ssize_t f_uac2_opts_##name##_store(struct config_item *item, \ goto end; \ } \ \ - ret = kstrtou32(page, 0, &num); \ + ret = uac2_kstrto##type(page, 0, &num); \ if (ret) \ goto end; \ \ @@ -1325,15 +1815,27 @@ end: \ \ CONFIGFS_ATTR(f_uac2_opts_, name) -UAC2_ATTRIBUTE(p_chmask); -UAC2_ATTRIBUTE(p_srate); -UAC2_ATTRIBUTE(p_ssize); -UAC2_ATTRIBUTE(c_chmask); -UAC2_ATTRIBUTE(c_srate); +UAC2_ATTRIBUTE(u32, p_chmask); +UAC2_ATTRIBUTE(u32, p_srate); +UAC2_ATTRIBUTE(u32, p_ssize); +UAC2_ATTRIBUTE(u32, c_chmask); +UAC2_ATTRIBUTE(u32, c_srate); UAC2_ATTRIBUTE_SYNC(c_sync); -UAC2_ATTRIBUTE(c_ssize); -UAC2_ATTRIBUTE(req_number); -UAC2_ATTRIBUTE(fb_max); +UAC2_ATTRIBUTE(u32, c_ssize); +UAC2_ATTRIBUTE(u32, req_number); + +UAC2_ATTRIBUTE(bool, p_mute_present); +UAC2_ATTRIBUTE(bool, p_volume_present); +UAC2_ATTRIBUTE(s16, p_volume_min); +UAC2_ATTRIBUTE(s16, p_volume_max); +UAC2_ATTRIBUTE(s16, p_volume_res); + +UAC2_ATTRIBUTE(bool, c_mute_present); +UAC2_ATTRIBUTE(bool, c_volume_present); +UAC2_ATTRIBUTE(s16, c_volume_min); +UAC2_ATTRIBUTE(s16, c_volume_max); +UAC2_ATTRIBUTE(s16, c_volume_res); +UAC2_ATTRIBUTE(u32, fb_max); static struct configfs_attribute *f_uac2_attrs[] = { &f_uac2_opts_attr_p_chmask, @@ -1345,6 +1847,19 @@ static struct configfs_attribute *f_uac2_attrs[] = { &f_uac2_opts_attr_c_sync, &f_uac2_opts_attr_req_number, &f_uac2_opts_attr_fb_max, + + &f_uac2_opts_attr_p_mute_present, + &f_uac2_opts_attr_p_volume_present, + &f_uac2_opts_attr_p_volume_min, + &f_uac2_opts_attr_p_volume_max, + &f_uac2_opts_attr_p_volume_res, + + &f_uac2_opts_attr_c_mute_present, + &f_uac2_opts_attr_c_volume_present, + &f_uac2_opts_attr_c_volume_min, + &f_uac2_opts_attr_c_volume_max, + &f_uac2_opts_attr_c_volume_res, + NULL, }; @@ -1383,6 +1898,19 @@ static struct usb_function_instance *afunc_alloc_inst(void) opts->c_srate = UAC2_DEF_CSRATE; opts->c_ssize = UAC2_DEF_CSSIZE; opts->c_sync = UAC2_DEF_CSYNC; + + opts->p_mute_present = UAC2_DEF_MUTE_PRESENT; + opts->p_volume_present = UAC2_DEF_VOLUME_PRESENT; + opts->p_volume_min = UAC2_DEF_MIN_DB; + opts->p_volume_max = UAC2_DEF_MAX_DB; + opts->p_volume_res = UAC2_DEF_RES_DB; + + opts->c_mute_present = UAC2_DEF_MUTE_PRESENT; + opts->c_volume_present = UAC2_DEF_VOLUME_PRESENT; + opts->c_volume_min = UAC2_DEF_MIN_DB; + opts->c_volume_max = UAC2_DEF_MAX_DB; + opts->c_volume_res = UAC2_DEF_RES_DB; + opts->req_number = UAC2_DEF_REQ_NUM; opts->fb_max = UAC2_DEF_FB_MAX; return &opts->func_inst; @@ -1409,6 +1937,11 @@ static void afunc_unbind(struct usb_configuration *c, struct usb_function *f) usb_free_all_descriptors(f); agdev->gadget = NULL; + + kfree(out_feature_unit_desc); + out_feature_unit_desc = NULL; + kfree(in_feature_unit_desc); + in_feature_unit_desc = NULL; } static struct usb_function *afunc_alloc(struct usb_function_instance *fi) @@ -1441,3 +1974,4 @@ DECLARE_USB_FUNCTION_INIT(uac2, afunc_alloc_inst, afunc_alloc); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Yadwinder Singh"); MODULE_AUTHOR("Jaswinder Singh"); +MODULE_AUTHOR("Ruslan Bilovol"); diff --git a/drivers/usb/gadget/function/u_uac2.h b/drivers/usb/gadget/function/u_uac2.h index 179d3ef6a195..a73b35774c44 100644 --- a/drivers/usb/gadget/function/u_uac2.h +++ b/drivers/usb/gadget/function/u_uac2.h @@ -22,8 +22,16 @@ #define UAC2_DEF_CSRATE 64000 #define UAC2_DEF_CSSIZE 2 #define UAC2_DEF_CSYNC USB_ENDPOINT_SYNC_ASYNC + +#define UAC2_DEF_MUTE_PRESENT 1 +#define UAC2_DEF_VOLUME_PRESENT 1 +#define UAC2_DEF_MIN_DB (-100*256) /* -100 dB */ +#define UAC2_DEF_MAX_DB 0 /* 0 dB */ +#define UAC2_DEF_RES_DB (1*256) /* 1 dB */ + #define UAC2_DEF_REQ_NUM 2 #define UAC2_DEF_FB_MAX 5 +#define UAC2_DEF_INT_REQ_NUM 10 struct f_uac2_opts { struct usb_function_instance func_inst; @@ -34,9 +42,22 @@ struct f_uac2_opts { int c_srate; int c_ssize; int c_sync; + + bool p_mute_present; + bool p_volume_present; + s16 p_volume_min; + s16 p_volume_max; + s16 p_volume_res; + + bool c_mute_present; + bool c_volume_present; + s16 c_volume_min; + s16 c_volume_max; + s16 c_volume_res; + int req_number; int fb_max; - bool bound; + bool bound; struct mutex lock; int refcnt; |