| /* |
| * f_audio.c -- USB Audio class function driver |
| * |
| * Copyright (C) 2008 Bryan Wu <cooloney@kernel.org> |
| * Copyright (C) 2008 Analog Devices, Inc |
| * Copyright (c) 2013 Qualcomm Atheros, Inc. |
| * |
| * Enter bugs at http://blackfin.uclinux.org/ |
| * |
| * Licensed under the GPL-2 or later. |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/device.h> |
| #include <asm/atomic.h> |
| #include <linux/compiler.h> |
| #include <asm/unaligned.h> |
| #include <linux/list.h> |
| #include <linux/proc_fs.h> |
| |
| #include "u_audio.h" |
| |
| #ifdef WLAN_AOW_ENABLED |
| #include "if_aow.h" /* include the aow_dev interface header file */ |
| #endif |
| |
| |
| #define MAX_AUDIO_CHAN (4) |
| #define BUF_SIZE_FACTOR 4 |
| #define OUT_EP_MAX_PACKET_SIZE 192 |
| #define AUDIO_FRAME_SIZE ((OUT_EP_MAX_PACKET_SIZE)*8) |
| #define AUDIO_BUF_SIZE (AUDIO_FRAME_SIZE * BUF_SIZE_FACTOR) |
| |
| static unsigned int req_count = 256; |
| module_param(req_count, uint, S_IRUGO); |
| MODULE_PARM_DESC(req_count, "ISO OUT endpoint request count"); |
| |
| static unsigned int req_buf_size = OUT_EP_MAX_PACKET_SIZE; |
| module_param(req_buf_size, uint, S_IRUGO); |
| MODULE_PARM_DESC(req_buf_size, "ISO OUT endpoint request buffer size"); |
| |
| static unsigned int g_audio_frame_size = AUDIO_FRAME_SIZE; |
| |
| static unsigned int g_audio_buf_size = AUDIO_BUF_SIZE; |
| module_param(g_audio_buf_size, uint, S_IRUGO); |
| MODULE_PARM_DESC(g_audio_buf_size, "Audio buffer size"); |
| |
| /* |
| * Note: In order to support various sample sizes, we should |
| * ideally change the design of some parts of this code so |
| * that it is made generic and a profile structure is used. |
| * However, for now, we only port the working solution from 2.6.15 - this |
| * in turn was meant to add to the existing code there with minimum |
| * potential disruption to other users of the driver. |
| * In the future, the design change can be carried out by interested |
| * teams if desired. |
| */ |
| |
| #ifdef USB_24BIT_AUDIO_ENABLED |
| |
| /* OUT_EP_MAX_PACKET_SIZE_24BIT is equivalent of |
| * OUT_EP_MAX_PACKET_SIZE, but for |
| * 24-bit samples rather than the |
| * default 16-bit samples. |
| */ |
| #define OUT_EP_MAX_PACKET_SIZE_24BIT 288 |
| #define AUDIO_FRAME_SIZE_24BIT ((OUT_EP_MAX_PACKET_SIZE_24BIT) * 8) |
| #define AUDIO_BUF_SIZE_24BIT (AUDIO_FRAME_SIZE_24BIT * BUF_SIZE_FACTOR) |
| |
| static unsigned int req_buf_size_24bit = OUT_EP_MAX_PACKET_SIZE_24BIT; |
| module_param(req_buf_size_24bit, uint, S_IRUGO); |
| MODULE_PARM_DESC(req_buf_size_24bit, "ISO OUT endpoint request buffer size " |
| "for 24-bit audio"); |
| |
| static unsigned int g_audio_frame_size_24bit = AUDIO_FRAME_SIZE_24BIT; |
| |
| static unsigned int g_audio_buf_size_24bit = AUDIO_BUF_SIZE_24BIT; |
| module_param(g_audio_buf_size_24bit, uint, S_IRUGO); |
| MODULE_PARM_DESC(g_audio_buf_size_24bit, "Audio buffer size for 24-bit audio"); |
| |
| static unsigned int max_audio_buf_size = AUDIO_BUF_SIZE_24BIT; |
| #else |
| static unsigned int max_audio_buf_size = AUDIO_BUF_SIZE; |
| #endif /* USB_24BIT_AUDIO_ENABLED */ |
| |
| module_param(max_audio_buf_size, uint, S_IRUGO); |
| MODULE_PARM_DESC(max_audio_buf_size, "Max audio buffer size"); |
| |
| #define MIN_FRAME_SIZE_FACTOR (1) |
| #define MAX_FRAME_SIZE_FACTOR (4) |
| #define DEFAULT_FRAME_SIZE_FACTOR (4) |
| |
| static int list_element_no; |
| |
| #ifdef WLAN_AOW_ENABLED |
| |
| #define AOWCTRL_QUEUE_LEN 5 |
| #define DEFAULT_EXPECTED_ALT_SETTING (7) |
| #define MIN_EXPECTED_ALT_SETTING (1) |
| #define MAX_EXPECTED_ALT_SETTING (8) |
| |
| static unsigned int g_expected_alt_setting = DEFAULT_EXPECTED_ALT_SETTING; |
| unsigned int g_alt_setting_init_done = 0; |
| |
| /* AoW Local Data types */ |
| aow_dev_t usb_aow_dev; /* USB AoW Audio device instance */ |
| |
| typedef struct usb_info { |
| struct f_audio *dev; |
| } usb_info_t; |
| |
| usb_info_t usbinfo; |
| |
| /* AoW Local Prototypes */ |
| static int is_aow_wlan_calls_registered(void); |
| static void init_usb_aow_dev(void); |
| static int set_wlan_audioparams(u8 bBitResolution, u8 tSamFreq[1][3]); |
| |
| #endif /* WLAN_AOW_ENABLED */ |
| |
| /* Use of I2S_ENABLED with USB_24BIT_AUDIO_ENABLED not (yet) supported */ |
| #define I2S_ENABLED 1 |
| //#undef I2S_ENABLED |
| |
| #ifdef I2S_ENABLED |
| static int i2s_st; |
| static int i2s_write_cnt; |
| #if defined(CONFIG_MACH_AR934x) || \ |
| defined(CONFIG_MACH_QCA955x) |
| extern uint32_t ath_ref_freq; |
| extern void ath_ex_i2s_set_freq(uint32_t); |
| extern void ath_i2s_clk(unsigned long, unsigned long); |
| extern void ath_i2s_dpll(); |
| extern int ath_ex_i2s_open(void); |
| extern void ath_ex_i2s_close(void); |
| extern void ath_ex_i2s_write(size_t , const char *, int ); |
| extern void ath_i2s_dma_start(int); |
| #else |
| extern void ar7240_i2s_clk(unsigned long, unsigned long); |
| extern void ar7242_i2s_clk(unsigned long, unsigned long); |
| extern int ar7242_i2s_open(void); |
| extern void ar7242_i2s_close(void); |
| extern void ar7242_i2s_write(size_t , const char *, int ); |
| extern void ar7240_i2sound_dma_start(int); |
| #endif |
| #endif |
| /* |
| * DESCRIPTORS ... most are static, but strings and full |
| * configuration descriptors are built on demand. |
| */ |
| |
| /* |
| * We have two interfaces- AudioControl and AudioStreaming |
| * TODO: only supcard playback currently |
| */ |
| #define F_AUDIO_AC_INTERFACE 0 |
| #define F_AUDIO_AS_INTERFACE 1 |
| #define F_AUDIO_NUM_INTERFACES 1 |
| |
| static off_t count_audio_playback; |
| /* B.3.1 Standard AC Interface Descriptor */ |
| static struct usb_interface_descriptor ac_interface_desc __initdata = { |
| .bLength = USB_DT_INTERFACE_SIZE, |
| .bDescriptorType = USB_DT_INTERFACE, |
| .bInterfaceNumber = 0, |
| .bAlternateSetting = 0, |
| .bNumEndpoints = 0, |
| .bInterfaceClass = USB_CLASS_AUDIO, |
| .bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL, |
| .bInterfaceProtocol = 0x0, |
| .iInterface = 0x0, |
| }; |
| |
| DECLARE_USB_AC_HEADER_DESCRIPTOR(2); |
| |
| #define USB_DT_AC_HEADER_LENGTH USB_DT_AC_HEADER_SIZE(F_AUDIO_NUM_INTERFACES) |
| #define UAC_DT_TOTAL_LENGTH (USB_DT_AC_HEADER_LENGTH + \ |
| USB_DT_AC_INPUT_TERMINAL_SIZE\ |
| + USB_DT_AC_OUTPUT_TERMINAL_SIZE) |
| /* B.3.2 Class-Specific AC Interface Descriptor */ |
| static struct usb_ac_header_descriptor_2 ac_header_desc = { |
| .bLength = USB_DT_AC_HEADER_LENGTH, |
| .bDescriptorType = USB_DT_CS_INTERFACE, |
| .bDescriptorSubtype = HEADER, |
| .bcdADC = __constant_cpu_to_le16(0x0100), |
| .wTotalLength = __constant_cpu_to_le16(UAC_DT_TOTAL_LENGTH), |
| .bInCollection = F_AUDIO_NUM_INTERFACES, |
| .baInterfaceNr = { |
| // [0] = F_AUDIO_AC_INTERFACE, |
| [0] = F_AUDIO_AS_INTERFACE, |
| } |
| }; |
| |
| #define INPUT_TERMINAL_ID 1 |
| #define OUTPUT_TERMINAL_ID 2 |
| static struct usb_input_terminal_descriptor input_terminal_desc = { |
| .bLength = USB_DT_AC_INPUT_TERMINAL_SIZE, |
| .bDescriptorType = USB_DT_CS_INTERFACE, |
| .bDescriptorSubtype = INPUT_TERMINAL, |
| .bTerminalID = INPUT_TERMINAL_ID, |
| .wTerminalType = __constant_cpu_to_le16(USB_AC_TERMINAL_STREAMING), |
| .bAssocTerminal = OUTPUT_TERMINAL_ID, |
| .bNrChannels = 0x8, |
| .wChannelConfig = __constant_cpu_to_le16(0x063F), |
| }; |
| #ifdef FEATURE_UNIT_SUPPORTED |
| |
| DECLARE_USB_AC_FEATURE_UNIT_DESCRIPTOR(0); |
| |
| #define FEATURE_UNIT_ID 2 |
| static struct usb_ac_feature_unit_descriptor_0 feature_unit_desc = { |
| .bLength = USB_DT_AC_FEATURE_UNIT_SIZE(0), |
| .bDescriptorType = USB_DT_CS_INTERFACE, |
| .bDescriptorSubtype = FEATURE_UNIT, |
| .bUnitID = FEATURE_UNIT_ID, |
| .bSourceID = INPUT_TERMINAL_ID, |
| .bControlSize = 2, |
| .bmaControls[0] = (FU_MUTE | FU_VOLUME), |
| }; |
| |
| static struct usb_audio_control mute_control = { |
| .list = LIST_HEAD_INIT(mute_control.list), |
| .name = "Mute Control", |
| .type = MUTE_CONTROL, |
| /* Todo: add real Mute control code */ |
| .set = generic_set_cmd, |
| .get = generic_get_cmd, |
| }; |
| |
| static struct usb_audio_control volume_control = { |
| .list = LIST_HEAD_INIT(volume_control.list), |
| .name = "Volume Control", |
| .type = VOLUME_CONTROL, |
| /* Todo: add real Volume control code */ |
| .set = generic_set_cmd, |
| .get = generic_get_cmd, |
| }; |
| |
| static struct usb_audio_control_selector feature_unit = { |
| .list = LIST_HEAD_INIT(feature_unit.list), |
| .id = FEATURE_UNIT_ID, |
| .name = "Mute & Volume Control", |
| .type = FEATURE_UNIT, |
| .desc = (struct usb_descriptor_header *)&feature_unit_desc, |
| }; |
| #endif |
| static struct usb_output_terminal_descriptor output_terminal_desc = { |
| .bLength = USB_DT_AC_OUTPUT_TERMINAL_SIZE, |
| .bDescriptorType = USB_DT_CS_INTERFACE, |
| .bDescriptorSubtype = OUTPUT_TERMINAL, |
| .bTerminalID = OUTPUT_TERMINAL_ID, |
| .wTerminalType = USB_AC_OUTPUT_TERMINAL_SPEAKER, |
| #ifdef FEATURE_UNIT_SUPPORTED |
| .bAssocTerminal = FEATURE_UNIT_ID, |
| .bSourceID = FEATURE_UNIT_ID, |
| #else |
| .bAssocTerminal = INPUT_TERMINAL_ID, |
| .bSourceID = INPUT_TERMINAL_ID, |
| #endif |
| }; |
| |
| /* B.4.1 Standard AS Interface Descriptor */ |
| static struct usb_interface_descriptor as_interface_alt_0_desc = { |
| .bLength = USB_DT_INTERFACE_SIZE, |
| .bDescriptorType = USB_DT_INTERFACE, |
| .bInterfaceNumber = 1, |
| .bAlternateSetting = 0, |
| .bNumEndpoints = 0, |
| .bInterfaceClass = USB_CLASS_AUDIO, |
| .bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING, |
| .bInterfaceProtocol = 0x0, |
| .iInterface = 0, |
| }; |
| |
| static struct usb_interface_descriptor as_interface_alt_1_desc = { |
| .bLength = USB_DT_INTERFACE_SIZE, |
| .bDescriptorType = USB_DT_INTERFACE, |
| .bInterfaceNumber = 1, |
| .bAlternateSetting = 1, |
| .bNumEndpoints = 1, |
| .bInterfaceClass = USB_CLASS_AUDIO, |
| .bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING, |
| }; |
| static const struct usb_interface_descriptor |
| as_interface_alt_2_desc = { |
| .bLength = USB_DT_INTERFACE_SIZE, |
| .bDescriptorType = USB_DT_INTERFACE, |
| .bInterfaceNumber = 1, |
| .bAlternateSetting = 2, |
| .bNumEndpoints = 1, |
| .bInterfaceClass = USB_CLASS_AUDIO, |
| .bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING, |
| .bInterfaceProtocol = 0x0, |
| .iInterface = 0, |
| }; |
| |
| |
| static const struct usb_interface_descriptor |
| as_interface_alt_3_desc = { |
| .bLength = USB_DT_INTERFACE_SIZE, |
| .bDescriptorType = USB_DT_INTERFACE, |
| .bInterfaceNumber = 1, |
| .bAlternateSetting = 3, |
| .bNumEndpoints = 1, |
| .bInterfaceClass = USB_CLASS_AUDIO, |
| .bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING, |
| .bInterfaceProtocol = 0x0, |
| .iInterface = 0, |
| }; |
| |
| static const struct usb_interface_descriptor |
| as_interface_alt_4_desc = { |
| .bLength = USB_DT_INTERFACE_SIZE, |
| .bDescriptorType = USB_DT_INTERFACE, |
| .bInterfaceNumber = 1, |
| .bAlternateSetting = 4, |
| .bNumEndpoints = 1, |
| .bInterfaceClass = USB_CLASS_AUDIO, |
| .bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING, |
| .bInterfaceProtocol = 0x0, |
| .iInterface = 0, |
| }; |
| |
| #ifdef USB_24BIT_AUDIO_ENABLED |
| |
| static struct usb_interface_descriptor as_interface_alt_5_desc = { |
| .bLength = USB_DT_INTERFACE_SIZE, |
| .bDescriptorType = USB_DT_INTERFACE, |
| .bInterfaceNumber = 1, |
| .bAlternateSetting = 5, |
| .bNumEndpoints = 1, |
| .bInterfaceClass = USB_CLASS_AUDIO, |
| .bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING, |
| }; |
| |
| static const struct usb_interface_descriptor |
| as_interface_alt_6_desc = { |
| .bLength = USB_DT_INTERFACE_SIZE, |
| .bDescriptorType = USB_DT_INTERFACE, |
| .bInterfaceNumber = 1, |
| .bAlternateSetting = 6, |
| .bNumEndpoints = 1, |
| .bInterfaceClass = USB_CLASS_AUDIO, |
| .bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING, |
| .bInterfaceProtocol = 0x0, |
| .iInterface = 0, |
| }; |
| |
| static const struct usb_interface_descriptor |
| as_interface_alt_7_desc = { |
| .bLength = USB_DT_INTERFACE_SIZE, |
| .bDescriptorType = USB_DT_INTERFACE, |
| .bInterfaceNumber = 1, |
| .bAlternateSetting = 7, |
| .bNumEndpoints = 1, |
| .bInterfaceClass = USB_CLASS_AUDIO, |
| .bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING, |
| .bInterfaceProtocol = 0x0, |
| .iInterface = 0, |
| }; |
| |
| static const struct usb_interface_descriptor |
| as_interface_alt_8_desc = { |
| .bLength = USB_DT_INTERFACE_SIZE, |
| .bDescriptorType = USB_DT_INTERFACE, |
| .bInterfaceNumber = 1, |
| .bAlternateSetting = 8, |
| .bNumEndpoints = 1, |
| .bInterfaceClass = USB_CLASS_AUDIO, |
| .bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING, |
| .bInterfaceProtocol = 0x0, |
| .iInterface = 0, |
| }; |
| |
| #endif /* USB_24BIT_AUDIO_ENABLED */ |
| |
| |
| /* B.4.2 Class-Specific AS Interface Descriptor */ |
| static struct usb_as_header_descriptor as_header_desc = { |
| .bLength = USB_DT_AS_HEADER_SIZE, |
| .bDescriptorType = USB_DT_CS_INTERFACE, |
| .bDescriptorSubtype = AS_GENERAL, |
| .bTerminalLink = INPUT_TERMINAL_ID, |
| .bDelay = 1, |
| .wFormatTag = __constant_cpu_to_le16(USB_AS_AUDIO_FORMAT_TYPE_I_PCM), |
| }; |
| |
| DECLARE_USB_AS_FORMAT_TYPE_I_DISCRETE_DESC(1); |
| |
| static struct usb_as_formate_type_i_discrete_descriptor_1 as_type_i_1_desc = { |
| .bLength = USB_AS_FORMAT_TYPE_I_DISCRETE_DESC_SIZE(1), |
| .bDescriptorType = USB_DT_CS_INTERFACE, |
| .bDescriptorSubtype = FORMAT_TYPE, |
| .bFormatType = USB_AS_FORMAT_TYPE_I, |
| .bNrChannels = 2, |
| .bSubframeSize = 2, |
| .bBitResolution = 16, |
| .bSamFreqType = 1, |
| .tSamFreq = { |
| [0][0] = 0x80, |
| [0][1] = 0xBB, |
| } |
| }; |
| static struct usb_as_formate_type_i_discrete_descriptor_1 |
| as_type_i_2_desc= { |
| .bLength = USB_AS_FORMAT_TYPE_I_DISCRETE_DESC_SIZE(1), |
| .bDescriptorType = USB_DT_CS_INTERFACE, |
| .bDescriptorSubtype = FORMAT_TYPE, |
| |
| .bFormatType = USB_AS_FORMAT_TYPE_I, |
| .bNrChannels = 4, |
| .bSubframeSize = 2, |
| .bBitResolution = 0x10, |
| .bSamFreqType = 1, |
| .tSamFreq = { |
| [0][0] = 0x80, |
| [0][1] = 0xBB, |
| } |
| }; |
| |
| static struct usb_as_formate_type_i_discrete_descriptor_1 |
| as_type_i_3_desc= { |
| .bLength = USB_AS_FORMAT_TYPE_I_DISCRETE_DESC_SIZE(1), |
| .bDescriptorType = USB_DT_CS_INTERFACE, |
| .bDescriptorSubtype = FORMAT_TYPE, |
| |
| .bFormatType = USB_AS_FORMAT_TYPE_I, |
| .bNrChannels = 6, |
| .bSubframeSize = 2, |
| .bBitResolution = 0x10, |
| .bSamFreqType = 1, |
| .tSamFreq = { |
| [0][0] = 0x80, |
| [0][1] = 0xBB, |
| } |
| }; |
| |
| static struct usb_as_formate_type_i_discrete_descriptor_1 |
| as_type_i_4_desc= { |
| .bLength = USB_AS_FORMAT_TYPE_I_DISCRETE_DESC_SIZE(1), |
| .bDescriptorType = USB_DT_CS_INTERFACE, |
| .bDescriptorSubtype = FORMAT_TYPE, |
| |
| .bFormatType = USB_AS_FORMAT_TYPE_I, |
| .bNrChannels = 8, |
| .bSubframeSize = 2, |
| .bBitResolution = 0x10, |
| .bSamFreqType = 1, |
| .tSamFreq = { |
| [0][0] = 0x80, |
| [0][1] = 0xBB, |
| } |
| }; |
| |
| #ifdef USB_24BIT_AUDIO_ENABLED |
| |
| static struct usb_as_formate_type_i_discrete_descriptor_1 as_type_i_5_desc = { |
| .bLength = USB_AS_FORMAT_TYPE_I_DISCRETE_DESC_SIZE(1), |
| .bDescriptorType = USB_DT_CS_INTERFACE, |
| .bDescriptorSubtype = FORMAT_TYPE, |
| .bFormatType = USB_AS_FORMAT_TYPE_I, |
| .bNrChannels = 2, |
| .bSubframeSize = 3, |
| .bBitResolution = 0x18, |
| .bSamFreqType = 1, |
| .tSamFreq = { |
| [0][0] = 0x80, |
| [0][1] = 0xBB, |
| } |
| }; |
| static struct usb_as_formate_type_i_discrete_descriptor_1 |
| as_type_i_6_desc= { |
| .bLength = USB_AS_FORMAT_TYPE_I_DISCRETE_DESC_SIZE(1), |
| .bDescriptorType = USB_DT_CS_INTERFACE, |
| .bDescriptorSubtype = FORMAT_TYPE, |
| |
| .bFormatType = USB_AS_FORMAT_TYPE_I, |
| .bNrChannels = 4, |
| .bSubframeSize = 3, |
| .bBitResolution = 0x18, |
| .bSamFreqType = 1, |
| .tSamFreq = { |
| [0][0] = 0x80, |
| [0][1] = 0xBB, |
| } |
| }; |
| |
| static struct usb_as_formate_type_i_discrete_descriptor_1 |
| as_type_i_7_desc= { |
| .bLength = USB_AS_FORMAT_TYPE_I_DISCRETE_DESC_SIZE(1), |
| .bDescriptorType = USB_DT_CS_INTERFACE, |
| .bDescriptorSubtype = FORMAT_TYPE, |
| |
| .bFormatType = USB_AS_FORMAT_TYPE_I, |
| .bNrChannels = 6, |
| .bSubframeSize = 3, |
| .bBitResolution = 0x18, |
| .bSamFreqType = 1, |
| .tSamFreq = { |
| [0][0] = 0x80, |
| [0][1] = 0xBB, |
| } |
| }; |
| |
| static struct usb_as_formate_type_i_discrete_descriptor_1 |
| as_type_i_8_desc= { |
| .bLength = USB_AS_FORMAT_TYPE_I_DISCRETE_DESC_SIZE(1), |
| .bDescriptorType = USB_DT_CS_INTERFACE, |
| .bDescriptorSubtype = FORMAT_TYPE, |
| |
| .bFormatType = USB_AS_FORMAT_TYPE_I, |
| .bNrChannels = 8, |
| .bSubframeSize = 3, |
| .bBitResolution = 0x18, |
| .bSamFreqType = 1, |
| .tSamFreq = { |
| [0][0] = 0x80, |
| [0][1] = 0xBB, |
| } |
| }; |
| |
| #endif /* USB_24BIT_AUDIO_ENABLED */ |
| |
| |
| /* Standard ISO OUT Endpoint Descriptor */ |
| static struct usb_endpoint_descriptor as_out_ep_alt_1_desc = { |
| .bLength = USB_DT_ENDPOINT_AUDIO_SIZE, |
| .bDescriptorType = USB_DT_ENDPOINT, |
| .bEndpointAddress = 3, |
| .bmAttributes = USB_AS_ENDPOINT_ADAPTIVE |
| | USB_ENDPOINT_XFER_ISOC, |
| .wMaxPacketSize = __constant_cpu_to_le16(OUT_EP_MAX_PACKET_SIZE), |
| .bInterval = 4, |
| .bRefresh = 0, |
| }; |
| static struct usb_endpoint_descriptor |
| as_out_ep_alt_2_desc = { |
| .bLength = USB_DT_ENDPOINT_AUDIO_SIZE, |
| .bDescriptorType = USB_DT_ENDPOINT, |
| |
| .bEndpointAddress = 3, |
| .bmAttributes = USB_AS_ENDPOINT_ADAPTIVE | USB_ENDPOINT_XFER_ISOC, |
| .wMaxPacketSize = __constant_cpu_to_le16((2*OUT_EP_MAX_PACKET_SIZE)), |
| .bInterval = 4, |
| .bRefresh = 0, |
| }; |
| |
| static struct usb_endpoint_descriptor |
| as_out_ep_alt_3_desc = { |
| .bLength = USB_DT_ENDPOINT_AUDIO_SIZE, |
| .bDescriptorType = USB_DT_ENDPOINT, |
| |
| .bEndpointAddress = 3, |
| .bmAttributes = USB_AS_ENDPOINT_ADAPTIVE | USB_ENDPOINT_XFER_ISOC, |
| .wMaxPacketSize = __constant_cpu_to_le16((3*OUT_EP_MAX_PACKET_SIZE)), |
| .bInterval = 4, |
| .bRefresh = 0, |
| }; |
| |
| static struct usb_endpoint_descriptor |
| as_out_ep_alt_4_desc = { |
| .bLength = USB_DT_ENDPOINT_AUDIO_SIZE, |
| .bDescriptorType = USB_DT_ENDPOINT, |
| |
| .bEndpointAddress = 3, |
| .bmAttributes = USB_AS_ENDPOINT_ADAPTIVE | USB_ENDPOINT_XFER_ISOC, |
| .wMaxPacketSize = __constant_cpu_to_le16((4*OUT_EP_MAX_PACKET_SIZE)), |
| .bInterval = 4, |
| .bRefresh = 0, |
| }; |
| |
| #ifdef USB_24BIT_AUDIO_ENABLED |
| |
| static struct usb_endpoint_descriptor as_out_ep_alt_5_desc = { |
| .bLength = USB_DT_ENDPOINT_AUDIO_SIZE, |
| .bDescriptorType = USB_DT_ENDPOINT, |
| .bEndpointAddress = 3, |
| .bmAttributes = USB_AS_ENDPOINT_ADAPTIVE |
| | USB_ENDPOINT_XFER_ISOC, |
| .wMaxPacketSize = __constant_cpu_to_le16(OUT_EP_MAX_PACKET_SIZE_24BIT), |
| .bInterval = 4, |
| .bRefresh = 0, |
| }; |
| |
| static struct usb_endpoint_descriptor |
| as_out_ep_alt_6_desc = { |
| .bLength = USB_DT_ENDPOINT_AUDIO_SIZE, |
| .bDescriptorType = USB_DT_ENDPOINT, |
| |
| .bEndpointAddress = 3, |
| .bmAttributes = USB_AS_ENDPOINT_ADAPTIVE | USB_ENDPOINT_XFER_ISOC, |
| .wMaxPacketSize = __constant_cpu_to_le16((2 * OUT_EP_MAX_PACKET_SIZE_24BIT)), |
| .bInterval = 4, |
| .bRefresh = 0, |
| }; |
| |
| static struct usb_endpoint_descriptor |
| as_out_ep_alt_7_desc = { |
| .bLength = USB_DT_ENDPOINT_AUDIO_SIZE, |
| .bDescriptorType = USB_DT_ENDPOINT, |
| |
| .bEndpointAddress = 3, |
| .bmAttributes = USB_AS_ENDPOINT_ADAPTIVE | USB_ENDPOINT_XFER_ISOC, |
| .wMaxPacketSize = __constant_cpu_to_le16((3 * OUT_EP_MAX_PACKET_SIZE_24BIT)), |
| .bInterval = 4, |
| .bRefresh = 0, |
| }; |
| |
| static struct usb_endpoint_descriptor |
| as_out_ep_alt_8_desc = { |
| .bLength = USB_DT_ENDPOINT_AUDIO_SIZE, |
| .bDescriptorType = USB_DT_ENDPOINT, |
| |
| .bEndpointAddress = 3, |
| .bmAttributes = USB_AS_ENDPOINT_ADAPTIVE | USB_ENDPOINT_XFER_ISOC, |
| .wMaxPacketSize = __constant_cpu_to_le16((4 * OUT_EP_MAX_PACKET_SIZE_24BIT)), |
| .bInterval = 4, |
| .bRefresh = 0, |
| }; |
| |
| #endif /* USB_24BIT_AUDIO_ENABLED */ |
| |
| /* Class-specific AS ISO OUT Endpoint Descriptor */ |
| static struct usb_as_iso_endpoint_descriptor as_iso_out_desc __initdata = { |
| .bLength = USB_AS_ISO_ENDPOINT_DESC_SIZE, |
| .bDescriptorType = USB_DT_CS_ENDPOINT, |
| .bDescriptorSubtype = EP_GENERAL, |
| .bmAttributes = 0, |
| .bLockDelayUnits = 0, |
| .wLockDelay = __constant_cpu_to_le16(0), |
| }; |
| |
| #ifdef WLAN_AOW_ENABLED |
| |
| #define AOWCTRL_IN_EP_INTERVAL 3 |
| #define AOWCTRL_OUT_EP_INTERVAL 4 |
| #define AOWCTRL_PROT_BYTECOUNT 512 |
| |
| static struct usb_interface_descriptor |
| vs_aowctrl_intf = { |
| .bLength = USB_DT_INTERFACE_SIZE, |
| .bDescriptorType = USB_DT_INTERFACE, |
| .bInterfaceNumber = 2, |
| .bAlternateSetting = 0, |
| |
| .bNumEndpoints = 2, |
| .bInterfaceClass = USB_CLASS_AUDIO, |
| .bInterfaceSubClass = USB_SUBCLASS_VENDOR_SPEC, |
| .bInterfaceProtocol = 0x0, |
| .iInterface = 0x0, |
| }; |
| |
| static struct usb_endpoint_descriptor |
| vs_aowctrl_out_ep_desc = { |
| .bLength = USB_DT_ENDPOINT_SIZE, |
| .bDescriptorType = USB_DT_ENDPOINT, |
| |
| .bEndpointAddress = USB_DIR_OUT | 1, |
| .bmAttributes = USB_ENDPOINT_XFER_BULK, |
| .wMaxPacketSize = __constant_cpu_to_le16 (AOWCTRL_PROT_BYTECOUNT), |
| .bInterval = AOWCTRL_OUT_EP_INTERVAL, |
| }; |
| |
| static struct usb_endpoint_descriptor |
| vs_aowctrl_in_ep_desc = { |
| .bLength = USB_DT_ENDPOINT_SIZE, |
| .bDescriptorType = USB_DT_ENDPOINT, |
| |
| .bEndpointAddress = USB_DIR_IN | 1, |
| .bmAttributes = USB_ENDPOINT_XFER_BULK, |
| .wMaxPacketSize = __constant_cpu_to_le16 (AOWCTRL_PROT_BYTECOUNT), |
| .bInterval = AOWCTRL_IN_EP_INTERVAL, |
| }; |
| |
| #endif /* WLAN_AOW_ENABLED */ |
| |
| |
| #define MULTIPLE_SETTINGS_SUPPORTED |
| static struct usb_descriptor_header *f_audio_desc[] __initdata = { |
| (struct usb_descriptor_header *)&ac_interface_desc, |
| (struct usb_descriptor_header *)&ac_header_desc, |
| |
| (struct usb_descriptor_header *)&input_terminal_desc, |
| (struct usb_descriptor_header *)&output_terminal_desc, |
| #ifdef FEATURE_UNIT_SUPPORTED |
| (struct usb_descriptor_header *)&feature_unit_desc, |
| #endif |
| (struct usb_descriptor_header *) &as_interface_alt_0_desc, |
| (struct usb_descriptor_header *) &as_interface_alt_1_desc, |
| (struct usb_descriptor_header *) &as_header_desc, |
| (struct usb_descriptor_header *) &as_type_i_1_desc, |
| (struct usb_descriptor_header *) &as_out_ep_alt_1_desc, |
| (struct usb_descriptor_header *) &as_iso_out_desc, |
| |
| #ifdef MULTIPLE_SETTINGS_SUPPORTED |
| (struct usb_descriptor_header *) &as_interface_alt_2_desc, |
| (struct usb_descriptor_header *) &as_header_desc, |
| (struct usb_descriptor_header *) &as_type_i_2_desc, |
| (struct usb_descriptor_header *) &as_out_ep_alt_2_desc, |
| (struct usb_descriptor_header *) &as_iso_out_desc, |
| |
| (struct usb_descriptor_header *) &as_interface_alt_3_desc, |
| (struct usb_descriptor_header *) &as_header_desc, |
| (struct usb_descriptor_header *) &as_type_i_3_desc, |
| (struct usb_descriptor_header *) &as_out_ep_alt_3_desc, |
| (struct usb_descriptor_header *) &as_iso_out_desc, |
| |
| (struct usb_descriptor_header *) &as_interface_alt_4_desc, |
| (struct usb_descriptor_header *) &as_header_desc, |
| (struct usb_descriptor_header *) &as_type_i_4_desc, |
| (struct usb_descriptor_header *) &as_out_ep_alt_4_desc, |
| (struct usb_descriptor_header *) &as_iso_out_desc, |
| |
| #ifdef USB_24BIT_AUDIO_ENABLED |
| (struct usb_descriptor_header *) &as_interface_alt_5_desc, |
| (struct usb_descriptor_header *) &as_header_desc, |
| (struct usb_descriptor_header *) &as_type_i_5_desc, |
| (struct usb_descriptor_header *) &as_out_ep_alt_5_desc, |
| (struct usb_descriptor_header *) &as_iso_out_desc, |
| |
| (struct usb_descriptor_header *) &as_interface_alt_6_desc, |
| (struct usb_descriptor_header *) &as_header_desc, |
| (struct usb_descriptor_header *) &as_type_i_6_desc, |
| (struct usb_descriptor_header *) &as_out_ep_alt_6_desc, |
| (struct usb_descriptor_header *) &as_iso_out_desc, |
| |
| (struct usb_descriptor_header *) &as_interface_alt_7_desc, |
| (struct usb_descriptor_header *) &as_header_desc, |
| (struct usb_descriptor_header *) &as_type_i_7_desc, |
| (struct usb_descriptor_header *) &as_out_ep_alt_7_desc, |
| (struct usb_descriptor_header *) &as_iso_out_desc, |
| |
| (struct usb_descriptor_header *) &as_interface_alt_8_desc, |
| (struct usb_descriptor_header *) &as_header_desc, |
| (struct usb_descriptor_header *) &as_type_i_8_desc, |
| (struct usb_descriptor_header *) &as_out_ep_alt_8_desc, |
| (struct usb_descriptor_header *) &as_iso_out_desc, |
| #endif /* USB_24BIT_AUDIO_ENABLED */ |
| #endif /* MULTIPLE_SETTINGS_SUPPORTED */ |
| #ifdef WLAN_AOW_ENABLED |
| (struct usb_descriptor_header *) &vs_aowctrl_intf, |
| (struct usb_descriptor_header *) &vs_aowctrl_out_ep_desc, |
| (struct usb_descriptor_header *) &vs_aowctrl_in_ep_desc, |
| #endif |
| NULL, |
| }; |
| |
| /* string IDs are assigned dynamically */ |
| |
| #define STRING_MANUFACTURER_IDX 0 |
| #define STRING_PRODUCT_IDX 1 |
| |
| static char manufacturer[50]; |
| |
| static struct usb_string strings_dev[] = { |
| [STRING_MANUFACTURER_IDX].s = manufacturer, |
| [STRING_PRODUCT_IDX].s = DRIVER_DESC, |
| { } /* 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, |
| }; |
| |
| /* |
| * This function is an ALSA sound card following USB Audio Class Spec 1.0. |
| */ |
| |
| /*-------------------------------------------------------------------------*/ |
| struct f_audio_buf { |
| u8 *buf; |
| int actual; |
| u_int64_t tsf; |
| struct list_head list; |
| }; |
| |
| #ifdef WLAN_AOW_ENABLED |
| struct aowctrl_buf { |
| u8 *buf; |
| int actual; |
| struct list_head list; |
| }; |
| #endif |
| |
| static struct f_audio_buf *f_audio_buffer_alloc(int buf_size) |
| { |
| struct f_audio_buf *copy_buf; |
| |
| copy_buf = kzalloc(sizeof *copy_buf, GFP_ATOMIC); |
| if (!copy_buf) |
| return (struct f_audio_buf *)-ENOMEM; |
| |
| copy_buf->buf = kzalloc(buf_size, GFP_ATOMIC); |
| if (!copy_buf->buf) { |
| kfree(copy_buf); |
| return (struct f_audio_buf *)-ENOMEM; |
| } |
| |
| return copy_buf; |
| } |
| |
| static void f_audio_buffer_free(struct f_audio_buf *audio_buf) |
| { |
| kfree(audio_buf->buf); |
| kfree(audio_buf); |
| } |
| |
| #ifdef WLAN_AOW_ENABLED |
| static struct aowctrl_buf* aowctrl_buffer_alloc(int buf_size) |
| { |
| struct aowctrl_buf *outbuf; |
| |
| outbuf = kzalloc(sizeof(struct aowctrl_buf), GFP_ATOMIC); |
| if (NULL == outbuf) { |
| return NULL; |
| } |
| |
| outbuf->buf = kzalloc(buf_size, GFP_ATOMIC); |
| if (NULL == outbuf->buf) { |
| kfree(outbuf); |
| return NULL; |
| } |
| |
| return outbuf; |
| } |
| |
| #endif /* WLAN_AOW_ENABLED */ |
| |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| struct f_audio { |
| struct gaudio card; |
| |
| /* endpoints handle full and/or high speeds */ |
| struct usb_ep *out_ep; |
| struct usb_endpoint_descriptor *out_desc; |
| |
| spinlock_t lock; |
| struct f_audio_buf *copy_buf; |
| struct work_struct playback_work; |
| struct list_head play_queue; |
| |
| /*Queue for maintaining request buffers.*/ |
| struct list_head req_queue; |
| /* Control Set command */ |
| struct list_head cs; |
| u8 set_cmd; |
| u8 interface; |
| u8 altSetting; |
| u8 curAltSetting; |
| unsigned urb_created; |
| struct usb_audio_control *set_con; |
| |
| #ifdef WLAN_AOW_ENABLED |
| spinlock_t aowctrl_lock; |
| struct usb_request *aowctrl_out_req, *aowctrl_in_req; |
| struct usb_ep *aowctrl_out_ep, *aowctrl_in_ep; |
| struct usb_endpoint_descriptor *aowctrl_out_desc, *aowctrl_in_desc; |
| struct list_head aowctrl_queue; |
| struct list_head aowctrl_free_queue; |
| |
| struct work_struct aowctrl_work; |
| |
| #endif |
| }; |
| |
| static inline struct f_audio *func_to_audio(struct usb_function *f) |
| { |
| return container_of(f, struct f_audio, card.func); |
| } |
| |
| |
| #ifdef USB_24BIT_AUDIO_ENABLED |
| u16 dst_for24bit[MAX_AUDIO_CHAN][AUDIO_FRAME_SIZE_24BIT/sizeof(u16)]; |
| #endif /* USB_24BIT_AUDIO_ENABLED */ |
| static u32 dst[MAX_AUDIO_CHAN][AUDIO_FRAME_SIZE/sizeof(u32)]; |
| |
| /* Note: 24-bit audio not tested with BUFDUMP_ENABLED_WQ*/ |
| //#define BUFDUMP_ENABLED_WQ 1 |
| //__attribute_used__ noinline static int audio_playback(struct audio_dev *audio, void *buf, int count) |
| static int audio_playback(struct f_audio *audio, void *buf, int count, u_int64_t time_stamp) |
| { |
| int i, offset; |
| int altSetting; |
| int num_chan_pairs = 0; |
| u32 *src; |
| #ifdef USB_24BIT_AUDIO_ENABLED |
| u16 *src_for24bit; |
| #endif /* USB_24BIT_AUDIO_ENABLED */ |
| int reqd_audio_buf_size = 0; |
| int reqd_audio_frame_size = 0; |
| int cnt, loop_count, extra; |
| |
| #ifdef WLAN_AOW_ENABLED |
| |
| #ifdef WLAN_AOW_TXSCHED_ENABLED |
| int send_data_called = 0; |
| #endif |
| |
| /* return if the wlan calls are not registered */ |
| if (!is_aow_wlan_calls_registered()) |
| return 0; |
| #endif /* WLAN_AOW_ENABLED */ |
| |
| altSetting = (int)(audio->altSetting); |
| |
| #ifdef USB_24BIT_AUDIO_ENABLED |
| if((altSetting > 8) || (altSetting < 1)) { |
| #else |
| if((altSetting >4) || (altSetting < 1)) { |
| #endif /* USB_24BIT_AUDIO_ENABLED */ |
| return 0; |
| } |
| |
| #ifdef USB_24BIT_AUDIO_ENABLED |
| if (altSetting > 4) { |
| src_for24bit = buf; |
| num_chan_pairs = altSetting - 4; |
| reqd_audio_buf_size = g_audio_buf_size_24bit; |
| reqd_audio_frame_size = g_audio_frame_size_24bit; |
| } else { |
| #endif /* USB_24BIT_AUDIO_ENABLED */ |
| src = buf; |
| num_chan_pairs = altSetting; |
| reqd_audio_buf_size = g_audio_buf_size; |
| reqd_audio_frame_size = g_audio_frame_size; |
| #ifdef USB_24BIT_AUDIO_ENABLED |
| } |
| #endif /* USB_24BIT_AUDIO_ENABLED */ |
| |
| if(count < reqd_audio_buf_size) { |
| cnt = count / (reqd_audio_frame_size * num_chan_pairs); |
| extra = count % reqd_audio_frame_size; |
| } else |
| { |
| cnt = BUF_SIZE_FACTOR / num_chan_pairs; |
| extra = 0; |
| } |
| count_audio_playback++; |
| |
| #ifdef USB_24BIT_AUDIO_ENABLED |
| if (altSetting > 4) { |
| |
| while (cnt--) { |
| for (offset = 0; offset < (reqd_audio_frame_size / 2); offset += 3) { |
| for (i = 0; i < num_chan_pairs; i++) { |
| dst_for24bit[i][offset] = *src_for24bit++; |
| dst_for24bit[i][offset + 1] = *src_for24bit++; |
| dst_for24bit[i][offset + 2] = *src_for24bit++; |
| } |
| } |
| |
| #ifdef WLAN_AOW_ENABLED |
| //usb_aow_dev.tx.get_tsf(&tsf); |
| for (i = 0; i < num_chan_pairs; i++) { |
| usb_aow_dev.tx.send_data((char *)&(dst_for24bit[i][0]), reqd_audio_frame_size, i, time_stamp); |
| #ifdef WLAN_AOW_TXSCHED_ENABLED |
| send_data_called = 1; |
| #endif |
| } |
| #endif |
| } |
| |
| if(extra != 0) { |
| cnt = extra/num_chan_pairs; |
| loop_count = cnt / 2; |
| |
| for (offset = 0; offset < loop_count; offset += 3) { |
| for (i = 0; i < num_chan_pairs; i++) { |
| dst_for24bit[i][offset] = *src_for24bit++; |
| dst_for24bit[i][offset + 1] = *src_for24bit++; |
| dst_for24bit[i][offset + 2] = *src_for24bit++; |
| } |
| } |
| |
| #ifdef WLAN_AOW_ENABLED |
| for (i = 0; i < num_chan_pairs; i++) { |
| usb_aow_dev.tx.send_data((char *)&(dst_for24bit[i][0]), cnt, i, time_stamp); |
| #ifdef WLAN_AOW_TXSCHED_ENABLED |
| send_data_called = 1; |
| #endif |
| } |
| #endif |
| } |
| |
| #ifdef WLAN_AOW_ENABLED |
| #ifdef WLAN_AOW_TXSCHED_ENABLED |
| if (send_data_called) { |
| usb_aow_dev.tx.dispatch_data(); |
| } |
| #endif |
| #endif |
| |
| } else { |
| #endif /* USB_24BIT_AUDIO_ENABLED */ |
| |
| /* The below code will not be under an else when USB_24BIT_AUDIO_ENABLED |
| is disabled. */ |
| |
| while (cnt--) { |
| for (offset = 0; offset < (reqd_audio_frame_size / 4); offset++) { |
| for (i = 0; i < num_chan_pairs; i++) |
| dst[i][offset] = *src++; |
| } |
| |
| #ifdef WLAN_AOW_ENABLED |
| //usb_aow_dev.tx.get_tsf(&tsf); |
| |
| for (i = 0; i < num_chan_pairs; i++) { |
| usb_aow_dev.tx.send_data((char *)&(dst[i][0]), reqd_audio_frame_size, i, time_stamp); |
| #ifdef WLAN_AOW_TXSCHED_ENABLED |
| send_data_called = 1; |
| #endif |
| } |
| #endif |
| |
| #ifdef I2S_ENABLED |
| if (i2s_st) { |
| #if defined(CONFIG_MACH_AR934x) || \ |
| defined(CONFIG_MACH_QCA955x) |
| ath_ex_i2s_open(); |
| ath_ex_i2s_set_freq(48000); |
| #else |
| ar7242_i2s_open(); |
| ar7240_i2s_clk(63565868, 9091); |
| #endif |
| i2s_st = i2s_write_cnt = 0; |
| } |
| #if !defined(CONFIG_MACH_AR934x) && \ |
| !defined(CONFIG_MACH_QCA955x) |
| ar7242_i2s_write(reqd_audio_frame_size, (char *)&(dst[0][0]), 1); |
| #endif |
| #endif |
| } |
| #ifdef I2S_ENABLED |
| #if defined(CONFIG_MACH_AR934x) || \ |
| defined(CONFIG_MACH_QCA955x) |
| ath_ex_i2s_write(AUDIO_FRAME_SIZE, (char *)&(dst[0][0]), 1); |
| #else |
| ar7242_i2s_write(AUDIO_FRAME_SIZE, (char *)&(dst[0][0]), 1); |
| #endif |
| #endif |
| |
| if(extra != 0) { |
| cnt = extra/num_chan_pairs; |
| loop_count = cnt/4; |
| for (offset = 0; offset < loop_count; offset++) { |
| for (i = 0; i < num_chan_pairs; i++) { |
| dst[i][offset] = *src++; |
| } |
| } |
| |
| #ifdef WLAN_AOW_ENABLED |
| for (i = 0; i < num_chan_pairs; i++) { |
| usb_aow_dev.tx.send_data((char *)&(dst[i][0]), cnt, i, time_stamp); |
| #ifdef WLAN_AOW_TXSCHED_ENABLED |
| send_data_called = 1; |
| #endif |
| } |
| #endif |
| |
| #ifdef I2S_ENABLED |
| #if defined(CONFIG_MACH_AR934x) || \ |
| defined(CONFIG_MACH_QCA955x) |
| ath_ex_i2s_write(cnt, (char *)&(dst[0][0]), 1); |
| #else |
| ar7242_i2s_write(cnt, (char *)&(dst[0][0]), 1); |
| #endif |
| #endif |
| } |
| |
| #ifdef WLAN_AOW_ENABLED |
| #ifdef WLAN_AOW_TXSCHED_ENABLED |
| if (send_data_called) { |
| usb_aow_dev.tx.dispatch_data(); |
| } |
| #endif |
| #endif |
| |
| #ifdef USB_24BIT_AUDIO_ENABLED |
| } |
| #endif /* USB_24BIT_AUDIO_ENABLED */ |
| |
| return 0; |
| } |
| |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| static void f_audio_playback_work(struct work_struct *data) |
| { |
| struct f_audio *audio = container_of(data, struct f_audio, |
| playback_work); |
| struct f_audio_buf *play_buf; |
| |
| spin_lock_irq(&audio->lock); |
| if (list_empty(&audio->play_queue)) { |
| spin_unlock_irq(&audio->lock); |
| return; |
| } |
| |
| do { |
| spin_lock_irq(&audio->lock); |
| play_buf = list_first_entry(&(audio->play_queue), struct f_audio_buf, list); |
| list_element_no--; |
| list_del(&play_buf->list); |
| spin_unlock_irq(&audio->lock); |
| |
| audio_playback(audio, play_buf->buf, play_buf->actual, play_buf->tsf); |
| #if 0 |
| u_audio_playback(&audio->card, play_buf->buf, play_buf->actual); |
| #endif |
| f_audio_buffer_free(play_buf); |
| } while (list_element_no); |
| |
| return; |
| } |
| |
| #ifdef WLAN_AOW_ENABLED |
| static void aowctrl_work(struct work_struct *data) |
| { |
| unsigned long long tsf = 0; |
| struct aowctrl_buf *outbuf; |
| struct f_audio *audio = container_of(data, |
| struct f_audio, |
| aowctrl_work); |
| unsigned long irqflags; |
| |
| spin_lock_irqsave(&audio->aowctrl_lock, irqflags); |
| if (list_empty(&audio->aowctrl_queue)) { |
| spin_unlock_irqrestore(&audio->aowctrl_lock, irqflags); |
| return; |
| } |
| |
| outbuf = list_first_entry(&(audio->aowctrl_queue), struct aowctrl_buf, list); |
| list_del(&outbuf->list); |
| spin_unlock_irqrestore(&audio->aowctrl_lock, irqflags); |
| |
| //usb_aow_dev.tx.get_tsf(&tsf); |
| usb_aow_dev.tx.send_ctrl((char *)outbuf->buf, outbuf->actual, tsf); |
| |
| spin_lock_irqsave(&audio->aowctrl_lock, irqflags); |
| list_add_tail(&outbuf->list, &audio->aowctrl_free_queue); |
| spin_unlock_irqrestore(&audio->aowctrl_lock, irqflags); |
| |
| return; |
| } |
| |
| static void destroy_aowctrl_queues(struct f_audio *dev) |
| { |
| struct aowctrl_buf *outbuf = NULL; |
| |
| spin_lock(&dev->aowctrl_lock); |
| |
| while (!list_empty(&dev->aowctrl_queue)) { |
| outbuf = list_first_entry(&(dev->aowctrl_queue), struct aowctrl_buf, list); |
| list_del(&outbuf->list); |
| |
| if (NULL == outbuf) { |
| continue; |
| } |
| |
| if (outbuf->buf) { |
| kfree(outbuf->buf); |
| } |
| |
| kfree(outbuf); |
| } |
| |
| while (!list_empty(&dev->aowctrl_free_queue)) { |
| outbuf = list_first_entry(&(dev->aowctrl_free_queue), struct aowctrl_buf, list); |
| list_del(&outbuf->list); |
| |
| if (NULL == outbuf) { |
| continue; |
| } |
| |
| if (outbuf->buf) { |
| kfree(outbuf->buf); |
| } |
| |
| kfree(outbuf); |
| } |
| |
| spin_unlock(&dev->aowctrl_lock); |
| |
| return; |
| } |
| #endif /* WLAN_AOW_ENABLED */ |
| |
| 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; |
| int err; |
| unsigned int reqd_audio_buf_size; |
| int num_chan_pairs = 0; |
| |
| if (!copy_buf) |
| return -EINVAL; |
| |
| /* WAR for audio problems when num_chan_pairs < 4 |
| We schedule playback_work once we have |
| (g_audio_frame_size * num_chan_pairs) bytes or |
| (g_audio_frame_size_24bit * num_chan_pairs) bytes. |
| Ideally, we should be changing the value of g_audio_buf_size |
| to correspond to the current altSetting, so that space is |
| conserved. However, this will involve critical code changes |
| which we don't want to jump into in one stroke. |
| Besides, the most common use case is with num_chan_pairs == 4, |
| so the space requirements with the current value of g_audio_buf_size |
| are bound to hold in most cases, anyway */ |
| |
| #ifdef USB_24BIT_AUDIO_ENABLED |
| if (audio->altSetting > 4) { |
| num_chan_pairs = audio->altSetting - 4; |
| reqd_audio_buf_size = g_audio_frame_size_24bit * num_chan_pairs; |
| } else { |
| #endif /* USB_24BIT_AUDIO_ENABLED */ |
| num_chan_pairs = audio->altSetting; |
| reqd_audio_buf_size = g_audio_frame_size * num_chan_pairs; |
| #ifdef USB_24BIT_AUDIO_ENABLED |
| } |
| #endif /* USB_24BIT_AUDIO_ENABLED */ |
| |
| |
| /* Copy buffer is full, or has requisite no. of bytes, |
| so add it to the play_queue */ |
| { |
| u_int16_t cpyLength = reqd_audio_buf_size - copy_buf->actual; |
| if (cpyLength > req->actual) { |
| cpyLength = req->actual; |
| } |
| req->actual -= cpyLength; |
| memcpy(copy_buf->buf + copy_buf->actual, |
| req->buf, |
| cpyLength); |
| copy_buf->actual += cpyLength; |
| if (copy_buf->actual == reqd_audio_buf_size) { |
| #ifdef WLAN_AOW_ENABLED |
| usb_aow_dev.tx.get_tsf(©_buf->tsf); |
| #endif |
| list_element_no++; |
| list_add_tail(©_buf->list, &audio->play_queue); |
| schedule_work(&audio->playback_work); |
| copy_buf = f_audio_buffer_alloc(max_audio_buf_size); |
| if (copy_buf < 0) { |
| audio->copy_buf = NULL; |
| return -ENOMEM; |
| } |
| } |
| } |
| if (req->actual) { |
| memcpy(copy_buf->buf, req->buf, req->actual); |
| copy_buf->actual += req->actual; |
| } |
| audio->copy_buf = copy_buf; |
| |
| err = usb_ep_queue(ep, req, GFP_ATOMIC); |
| if (err) |
| ERROR(cdev, "%s queue req: %d\n", ep->name, err); |
| |
| return 0; |
| |
| } |
| |
| #ifdef WLAN_AOW_ENABLED |
| static int f_audio_aowctrl_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; |
| int err; |
| struct aowctrl_buf *outbuf = NULL; |
| |
| if (req->status != 0) { |
| ERROR(cdev, "%s queue req status: %d\n", ep->name, req->status); |
| /* But we don't give up. */ |
| goto requeue; |
| } |
| |
| if (list_empty(&audio->aowctrl_free_queue)) { |
| ERROR(cdev, "%s queue - Out of buffers for Control packets\n", ep->name); |
| /* But we don't give up. */ |
| goto requeue; |
| } |
| |
| /* Remove from free queue */ |
| outbuf = list_first_entry(&(audio->aowctrl_free_queue), struct aowctrl_buf, list); |
| list_del(&outbuf->list); |
| |
| if (NULL == outbuf) { |
| ERROR(cdev, "%s queue - Could not get valid buffer for Control packet\n", ep->name); |
| /* But we don't give up. */ |
| goto requeue; |
| } |
| |
| memcpy(outbuf->buf, req->buf, req->actual); |
| outbuf->actual = req->actual; |
| list_add_tail(&outbuf->list, &audio->aowctrl_queue); |
| schedule_work(&audio->aowctrl_work); |
| |
| requeue: |
| err = usb_ep_queue(ep, req, GFP_ATOMIC); |
| |
| if (err) { |
| ERROR(cdev, "%s queueing error: %d\n", ep->name, err); |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| static int f_audio_aowctrl_in_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; |
| |
| if (req->status < 0) { |
| ERROR(cdev, "%s queue req: %d\n", ep->name, req->status); |
| return req->status; |
| } |
| |
| return 0; |
| } |
| #endif |
| |
| |
| static void f_audio_complete(struct usb_ep *ep, struct usb_request *req) |
| { |
| struct f_audio *audio = req->context; |
| int status = req->status; |
| u32 data = 0; |
| struct usb_ep *out_ep = audio->out_ep; |
| #ifdef WLAN_AOW_ENABLED |
| struct usb_ep *aowctrl_out_ep = audio->aowctrl_out_ep; |
| struct usb_ep *aowctrl_in_ep = audio->aowctrl_in_ep; |
| #endif |
| |
| switch (status) { |
| |
| case 0: /* normal completion? */ |
| if (ep == out_ep) { |
| spin_lock(&audio->lock); |
| f_audio_out_ep_complete(ep, req); |
| spin_unlock(&audio->lock); |
| } |
| #ifdef WLAN_AOW_ENABLED |
| else if (ep == aowctrl_out_ep) { |
| spin_lock (&audio->aowctrl_lock); |
| f_audio_aowctrl_out_ep_complete(ep, req); |
| spin_unlock (&audio->aowctrl_lock); |
| } |
| else if (ep == aowctrl_in_ep) { |
| spin_lock (&audio->aowctrl_lock); |
| f_audio_aowctrl_in_ep_complete(ep, req); |
| spin_unlock (&audio->aowctrl_lock); |
| } |
| #endif |
| else if (audio->set_con) { |
| memcpy(&data, req->buf, req->length); |
| audio->set_con->set(audio->set_con, audio->set_cmd, |
| le16_to_cpu(data)); |
| audio->set_con = NULL; |
| } |
| break; |
| default: |
| break; |
| } |
| } |
| |
| static int audio_set_intf_req(struct usb_function *f, |
| const struct usb_ctrlrequest *ctrl) |
| { |
| struct f_audio *audio = func_to_audio(f); |
| struct usb_composite_dev *cdev = f->config->cdev; |
| struct usb_request *req = cdev->req; |
| u8 id = ((le16_to_cpu(ctrl->wIndex) >> 8) & 0xFF); |
| u16 len = le16_to_cpu(ctrl->wLength); |
| u16 w_value = le16_to_cpu(ctrl->wValue); |
| u8 con_sel = (w_value >> 8) & 0xFF; |
| u8 cmd = (ctrl->bRequest & 0x0F); |
| struct usb_audio_control_selector *cs; |
| struct usb_audio_control *con; |
| |
| DBG(cdev, "bRequest 0x%x, w_value 0x%04x, len %d, entity %d\n", |
| ctrl->bRequest, w_value, len, id); |
| |
| list_for_each_entry(cs, &audio->cs, list) { |
| if (cs->id == id) { |
| list_for_each_entry(con, &cs->control, list) { |
| if (con->type == con_sel) { |
| audio->set_con = con; |
| break; |
| } |
| } |
| break; |
| } |
| } |
| |
| audio->set_cmd = cmd; |
| req->context = audio; |
| req->complete = f_audio_complete; |
| |
| return len; |
| } |
| |
| static int audio_get_intf_req(struct usb_function *f, |
| const struct usb_ctrlrequest *ctrl) |
| { |
| struct f_audio *audio = func_to_audio(f); |
| struct usb_composite_dev *cdev = f->config->cdev; |
| struct usb_request *req = cdev->req; |
| int value = -EOPNOTSUPP; |
| u8 id = ((le16_to_cpu(ctrl->wIndex) >> 8) & 0xFF); |
| u16 len = le16_to_cpu(ctrl->wLength); |
| u16 w_value = le16_to_cpu(ctrl->wValue); |
| u8 con_sel = (w_value >> 8) & 0xFF; |
| u8 cmd = (ctrl->bRequest & 0x0F); |
| struct usb_audio_control_selector *cs; |
| struct usb_audio_control *con; |
| |
| DBG(cdev, "bRequest 0x%x, w_value 0x%04x, len %d, entity %d\n", |
| ctrl->bRequest, w_value, len, id); |
| |
| list_for_each_entry(cs, &audio->cs, list) { |
| if (cs->id == id) { |
| list_for_each_entry(con, &cs->control, list) { |
| if (con->type == con_sel && con->get) { |
| value = con->get(con, cmd); |
| break; |
| } |
| } |
| break; |
| } |
| } |
| |
| req->context = audio; |
| req->complete = f_audio_complete; |
| memcpy(req->buf, &value, len); |
| |
| return len; |
| } |
| |
| static int |
| f_audio_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) |
| { |
| struct usb_composite_dev *cdev = f->config->cdev; |
| struct usb_request *req = cdev->req; |
| int value = -EOPNOTSUPP; |
| u16 w_index = le16_to_cpu(ctrl->wIndex); |
| u16 w_value = le16_to_cpu(ctrl->wValue); |
| u16 w_length = le16_to_cpu(ctrl->wLength); |
| |
| /* composite driver infrastructure handles everything except |
| * Audio class messages; interface activation uses set_alt(). |
| */ |
| switch (ctrl->bRequestType) { |
| case USB_AUDIO_SET_INTF: |
| value = audio_set_intf_req(f, ctrl); |
| break; |
| |
| case USB_AUDIO_GET_INTF: |
| value = audio_get_intf_req(f, ctrl); |
| break; |
| |
| default: |
| ERROR(cdev, "invalid control req%02x.%02x v%04x i%04x l%d\n", |
| ctrl->bRequestType, ctrl->bRequest, |
| w_value, w_index, w_length); |
| } |
| |
| /* respond with data transfer or status phase? */ |
| if (value >= 0) { |
| DBG(cdev, "audio req%02x.%02x v%04x i%04x l%d\n", |
| ctrl->bRequestType, ctrl->bRequest, |
| w_value, w_index, w_length); |
| req->zero = 0; |
| req->length = value; |
| value = usb_ep_queue(cdev->gadget->ep0, req, GFP_ATOMIC); |
| if (value < 0) |
| ERROR(cdev, "audio response on err %d\n", value); |
| } |
| |
| /* device either stalls (value < 0) or reports success */ |
| return value; |
| } |
| |
| static void free_out_ep_reqs(struct f_audio *audio) |
| { |
| struct usb_request *req; |
| |
| while (!list_empty(&audio->req_queue)) { |
| req = list_first_entry(&(audio->req_queue), struct usb_request, list); |
| list_del (&req->list); |
| kfree(req->buf); |
| usb_ep_dequeue(audio->out_ep, req); |
| usb_ep_free_request (audio->out_ep, req); |
| } |
| } |
| |
| #ifdef WLAN_AOW_ENABLED |
| static void free_aowctrl_ep_reqs(struct f_audio *audio) |
| { |
| if (audio->aowctrl_out_req) { |
| if (audio->aowctrl_out_req->buf) { |
| kfree(audio->aowctrl_out_req->buf); |
| audio->aowctrl_out_req->buf = NULL; |
| } |
| |
| usb_ep_dequeue(audio->aowctrl_out_ep, audio->aowctrl_out_req); |
| usb_ep_free_request(audio->aowctrl_out_ep, audio->aowctrl_out_req); |
| audio->aowctrl_out_req = NULL; |
| } |
| |
| if (audio->aowctrl_in_req) { |
| if (audio->aowctrl_in_req->buf) { |
| kfree(audio->aowctrl_in_req->buf); |
| audio->aowctrl_in_req->buf = NULL; |
| } |
| |
| usb_ep_dequeue(audio->aowctrl_in_ep, audio->aowctrl_in_req); |
| usb_ep_free_request (audio->aowctrl_in_ep, audio->aowctrl_in_req); |
| audio->aowctrl_in_req = NULL; |
| } |
| } |
| |
| static int set_wlan_audioparams(u8 bBitResolution, u8 tSamFreq[1][3]) |
| { |
| audio_type_t audiotype; |
| |
| /* Return if the wlan calls are not registered. */ |
| if (!is_aow_wlan_calls_registered()) { |
| return 0; |
| } |
| |
| /* TODO: As and when new sample sizes and rates are added, modify |
| the below checks. */ |
| |
| if ((0x80 == tSamFreq[0][0]) && (0xBB == tSamFreq[0][1])) { |
| /* 48 KHz */ |
| |
| switch (bBitResolution) |
| { |
| case 16: |
| audiotype = SAMP_RATE_48k_SAMP_SIZE_16; |
| break; |
| |
| case 24: |
| audiotype = SAMP_RATE_48k_SAMP_SIZE_24; |
| break; |
| |
| default: |
| printk("%s: Unsupported sample size. bBitResolution=%u.\n", |
| __func__, |
| bBitResolution); |
| return -EINVAL; |
| } |
| } else { |
| printk("%s: Unsupported sampling rate. " |
| "tSamFreq[0][0]=0x%x, tSamFreq[0][1]=0x%x\n", |
| __func__, |
| tSamFreq[0][0], |
| tSamFreq[0][1]); |
| return -EINVAL; |
| } |
| |
| usb_aow_dev.tx.set_audioparams(audiotype); |
| |
| return 0; |
| } |
| #endif /* WLAN_AOW_ENABLED */ |
| |
| |
| |
| static int f_audio_set_alt(struct usb_function *f, unsigned intf, unsigned alt) |
| { |
| struct f_audio *audio = func_to_audio(f); |
| struct usb_composite_dev *cdev = f->config->cdev; |
| struct usb_ep *out_ep = audio->out_ep; |
| struct usb_request *req; |
| int selected_req_buf_size = 0; |
| int num_chan_pairs = 0; |
| int i = 0, err = 0; |
| |
| #ifdef WLAN_AOW_ENABLED |
| struct usb_ep *aowctrl_out_ep = audio->aowctrl_out_ep; |
| struct usb_ep *aowctrl_in_ep = audio->aowctrl_in_ep; |
| |
| struct usb_request *aowctrl_out_req = NULL; |
| struct usb_request *aowctrl_in_req = NULL; |
| |
| u8 bBitResolution = 0; |
| u8 tSamFreq[1][3] = { |
| [0][0] = 0, |
| [0][1] = 0, |
| }; |
| #endif |
| |
| DBG(cdev, "intf %d, alt %d\n", intf, alt); |
| ERROR(cdev, "intf %d, alt %d\n", intf, alt); |
| |
| if (intf == 1) { |
| spin_lock(&audio->lock); |
| |
| if (alt != 0) { |
| if(!(audio->copy_buf)) { |
| audio->copy_buf = f_audio_buffer_alloc(max_audio_buf_size); |
| } |
| |
| if (audio->copy_buf == -ENOMEM) { |
| audio->copy_buf = NULL; |
| spin_unlock(&audio->lock); |
| return -ENOMEM; |
| } |
| #ifdef WLAN_AOW_ENABLED |
| printk("altsetting requested=%d alsetting expected=%d\n", |
| alt, |
| g_expected_alt_setting); |
| |
| if((1 != audio->urb_created) && (alt == g_expected_alt_setting)) { |
| #else |
| if((1 != audio->urb_created) && (audio->altSetting != alt)) { |
| #endif |
| usb_ep_disable(out_ep); |
| free_out_ep_reqs(audio); |
| audio->altSetting = (u8)alt; |
| audio->curAltSetting = (u8)alt; |
| switch(alt) { |
| case 1: |
| audio->out_desc = &as_out_ep_alt_1_desc; |
| #ifdef WLAN_AOW_ENABLED |
| bBitResolution = as_type_i_1_desc.bBitResolution; |
| tSamFreq[0][0] = as_type_i_1_desc.tSamFreq[0][0]; |
| tSamFreq[0][1] = as_type_i_1_desc.tSamFreq[0][1]; |
| #endif /* WLAN_AOW_ENABLED */ |
| break; |
| case 2: |
| audio->out_desc = &as_out_ep_alt_2_desc; |
| #ifdef WLAN_AOW_ENABLED |
| bBitResolution = as_type_i_2_desc.bBitResolution; |
| tSamFreq[0][0] = as_type_i_2_desc.tSamFreq[0][0]; |
| tSamFreq[0][1] = as_type_i_2_desc.tSamFreq[0][1]; |
| #endif /* WLAN_AOW_ENABLED */ |
| break; |
| case 3: |
| audio->out_desc = &as_out_ep_alt_3_desc; |
| #ifdef WLAN_AOW_ENABLED |
| bBitResolution = as_type_i_3_desc.bBitResolution; |
| tSamFreq[0][0] = as_type_i_3_desc.tSamFreq[0][0]; |
| tSamFreq[0][1] = as_type_i_3_desc.tSamFreq[0][1]; |
| #endif /* WLAN_AOW_ENABLED */ |
| break; |
| case 4: |
| audio->out_desc = &as_out_ep_alt_4_desc; |
| #ifdef WLAN_AOW_ENABLED |
| bBitResolution = as_type_i_4_desc.bBitResolution; |
| tSamFreq[0][0] = as_type_i_4_desc.tSamFreq[0][0]; |
| tSamFreq[0][1] = as_type_i_4_desc.tSamFreq[0][1]; |
| #endif /* WLAN_AOW_ENABLED */ |
| break; |
| #ifdef USB_24BIT_AUDIO_ENABLED |
| case 5: |
| audio->out_desc = &as_out_ep_alt_5_desc; |
| #ifdef WLAN_AOW_ENABLED |
| bBitResolution = as_type_i_5_desc.bBitResolution; |
| tSamFreq[0][0] = as_type_i_5_desc.tSamFreq[0][0]; |
| tSamFreq[0][1] = as_type_i_5_desc.tSamFreq[0][1]; |
| #endif /* WLAN_AOW_ENABLED */ |
| break; |
| case 6: |
| audio->out_desc = &as_out_ep_alt_6_desc; |
| #ifdef WLAN_AOW_ENABLED |
| bBitResolution = as_type_i_6_desc.bBitResolution; |
| tSamFreq[0][0] = as_type_i_6_desc.tSamFreq[0][0]; |
| tSamFreq[0][1] = as_type_i_6_desc.tSamFreq[0][1]; |
| #endif /* WLAN_AOW_ENABLED */ |
| break; |
| case 7: |
| audio->out_desc = &as_out_ep_alt_7_desc; |
| #ifdef WLAN_AOW_ENABLED |
| bBitResolution = as_type_i_7_desc.bBitResolution; |
| tSamFreq[0][0] = as_type_i_7_desc.tSamFreq[0][0]; |
| tSamFreq[0][1] = as_type_i_7_desc.tSamFreq[0][1]; |
| #endif /* WLAN_AOW_ENABLED */ |
| break; |
| case 8: |
| audio->out_desc = &as_out_ep_alt_8_desc; |
| #ifdef WLAN_AOW_ENABLED |
| bBitResolution = as_type_i_8_desc.bBitResolution; |
| tSamFreq[0][0] = as_type_i_8_desc.tSamFreq[0][0]; |
| tSamFreq[0][1] = as_type_i_8_desc.tSamFreq[0][1]; |
| #endif /* WLAN_AOW_ENABLED */ |
| break; |
| #endif /* USB_24BIT_AUDIO_ENABLED */ |
| default: |
| ERROR (cdev, "Invalid Alternate Setting: intf %d, alt %d\n", intf, alt); |
| } |
| |
| usb_ep_enable(out_ep, audio->out_desc); |
| out_ep->driver_data = audio; |
| #ifdef WLAN_AOW_ENABLED |
| set_wlan_audioparams(bBitResolution, tSamFreq); |
| #endif |
| |
| #ifdef USB_24BIT_AUDIO_ENABLED |
| if (alt > 4) { |
| selected_req_buf_size = req_buf_size_24bit; |
| num_chan_pairs = alt - 4; |
| } else { |
| #endif /* USB_24BIT_AUDIO_ENABLED */ |
| selected_req_buf_size = req_buf_size; |
| num_chan_pairs = alt; |
| #ifdef USB_24BIT_AUDIO_ENABLED |
| } |
| #endif /* USB_24BIT_AUDIO_ENABLED */ |
| |
| /* |
| * allocate a bunch of read buffers |
| * and queue them all at once. |
| */ |
| for (i = 0; i < req_count && err == 0; i++) { |
| req = usb_ep_alloc_request(out_ep, GFP_ATOMIC); |
| if (req) { |
| req->buf = kzalloc(selected_req_buf_size * num_chan_pairs, |
| GFP_ATOMIC); |
| if (req->buf) { |
| req->length = selected_req_buf_size * num_chan_pairs; |
| req->context = audio; |
| req->complete = |
| f_audio_complete; |
| err = usb_ep_queue(out_ep, |
| req, GFP_ATOMIC); |
| if (err) |
| ERROR(cdev, |
| "%s queue req: %d\n", |
| out_ep->name, err); |
| } else |
| err = -ENOMEM; |
| } else |
| err = -ENOMEM; |
| list_add_tail(&req->list, &audio->req_queue); |
| } |
| audio->urb_created = 1; |
| } |
| } else { |
| struct f_audio_buf *copy_buf = audio->copy_buf; |
| audio->curAltSetting = alt; |
| if (copy_buf) { |
| if (copy_buf->actual != 0) { |
| audio->copy_buf = NULL; |
| list_element_no++; |
| list_add_tail(©_buf->list, |
| &audio->play_queue); |
| schedule_work(&audio->playback_work); |
| } |
| } |
| } |
| |
| spin_unlock(&audio->lock); |
| } |
| #ifdef WLAN_AOW_ENABLED |
| else if (intf == 2) { |
| spin_lock(&audio->aowctrl_lock); |
| |
| /* We have only altsetting 0 */ |
| if (alt != 0) { |
| ERROR (cdev, "Invalid Alternate Setting: intf %d, alt %d\n", intf, alt); |
| err = -EINVAL; |
| spin_unlock(&audio->aowctrl_lock); |
| goto done; |
| } |
| |
| free_aowctrl_ep_reqs(audio); |
| |
| /* Initialization for OUT transfers */ |
| |
| audio->aowctrl_out_desc = &vs_aowctrl_out_ep_desc; |
| |
| usb_ep_enable(aowctrl_out_ep, audio->aowctrl_out_desc); |
| |
| aowctrl_out_ep->driver_data = audio; |
| |
| aowctrl_out_req = usb_ep_alloc_request(aowctrl_out_ep, GFP_ATOMIC); |
| if (aowctrl_out_req) { |
| aowctrl_out_req->buf = kzalloc(AOWCTRL_PROT_BYTECOUNT, GFP_ATOMIC); |
| |
| if (aowctrl_out_req->buf) { |
| aowctrl_out_req->length = AOWCTRL_PROT_BYTECOUNT; |
| aowctrl_out_req->context = audio; |
| aowctrl_out_req->complete = f_audio_complete; |
| |
| err = usb_ep_queue(aowctrl_out_ep, |
| aowctrl_out_req, |
| GFP_ATOMIC); |
| if (err) { |
| ERROR(cdev, |
| "%s queue req: %d\n", |
| aowctrl_out_ep->name, |
| err); |
| spin_unlock(&audio->aowctrl_lock); |
| goto done; |
| } |
| } else { |
| err = -ENOMEM; |
| spin_unlock(&audio->aowctrl_lock); |
| goto done; |
| } |
| } else { |
| err = -ENOMEM; |
| spin_unlock(&audio->aowctrl_lock); |
| goto done; |
| } |
| |
| audio->aowctrl_out_req = aowctrl_out_req; |
| |
| |
| /* Initialization for IN transfers */ |
| |
| audio->aowctrl_in_desc = &vs_aowctrl_in_ep_desc; |
| |
| usb_ep_enable(aowctrl_in_ep, audio->aowctrl_in_desc); |
| |
| aowctrl_in_ep->driver_data = audio; |
| |
| aowctrl_in_req = usb_ep_alloc_request(aowctrl_in_ep, GFP_ATOMIC); |
| if (aowctrl_in_req) { |
| aowctrl_in_req->buf = kzalloc(AOWCTRL_PROT_BYTECOUNT, GFP_ATOMIC); |
| |
| if (aowctrl_in_req->buf) { |
| aowctrl_in_req->length = AOWCTRL_PROT_BYTECOUNT; |
| aowctrl_in_req->context = audio; |
| aowctrl_in_req->complete = f_audio_complete; |
| } else { |
| err = -ENOMEM; |
| spin_unlock(&audio->aowctrl_lock); |
| goto done; |
| } |
| } else { |
| err = -ENOMEM; |
| spin_unlock(&audio->aowctrl_lock); |
| goto done; |
| } |
| |
| audio->aowctrl_in_req = aowctrl_in_req; |
| } |
| |
| g_alt_setting_init_done = 1; |
| |
| #endif /* WLAN_AOW_ENABLED */ |
| |
| done: |
| //ERROR(cdev, "TP4: intf %d, alt %d Err = %d\n", intf, alt, err); |
| |
| return err; |
| } |
| |
| static void f_audio_disable(struct usb_function *f) |
| { |
| struct f_audio *audio = func_to_audio(f); |
| printk(KERN_ALERT "Inside f_audio_disable\n"); |
| audio->urb_created = 0; |
| return; |
| } |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| static void f_audio_build_desc(struct f_audio *audio) |
| { |
| //struct gaudio *card = &audio->card; |
| //u8 *sam_freq; |
| //int rate; |
| |
| /* Set channel numbers */ |
| // input_terminal_desc.bNrChannels = u_audio_get_playback_channels(card); |
| // as_type_i_1_desc.bNrChannels = u_audio_get_playback_channels(card); |
| |
| /* Set sample rates */ |
| // rate = u_audio_get_playback_rate(card); |
| // sam_freq = as_type_i_1_desc.tSamFreq[0]; |
| // memcpy(sam_freq, &rate, 3); |
| |
| /* Todo: Set Sample bits and other parameters */ |
| |
| return; |
| } |
| |
| /* audio function driver setup/binding */ |
| static int __init |
| f_audio_bind(struct usb_configuration *c, struct usb_function *f) |
| { |
| struct usb_composite_dev *cdev = c->cdev; |
| struct f_audio *audio = func_to_audio(f); |
| int status; |
| struct usb_ep *ep; |
| #ifdef WLAN_AOW_ENABLED |
| struct usb_ep *aowctrl_out_ep = NULL, *aowctrl_in_ep = NULL; |
| #endif |
| |
| |
| f_audio_build_desc(audio); |
| |
| /* allocate instance-specific interface IDs, and patch descriptors */ |
| status = usb_interface_id(c, f); |
| if (status < 0) |
| goto fail; |
| ac_interface_desc.bInterfaceNumber = status; |
| |
| status = usb_interface_id(c, f); |
| if (status < 0) |
| goto fail; |
| as_interface_alt_0_desc.bInterfaceNumber = status; |
| as_interface_alt_1_desc.bInterfaceNumber = status; |
| |
| status = -ENODEV; |
| |
| /* allocate instance-specific endpoints */ |
| ep = usb_ep_autoconfig(cdev->gadget, &as_out_ep_alt_1_desc); |
| if (!ep) |
| goto fail; |
| audio->out_ep = ep; |
| ep->driver_data = cdev; /* claim */ |
| |
| #ifdef WLAN_AOW_ENABLED |
| status = usb_interface_id(c, f); |
| if (status < 0) |
| goto fail; |
| vs_aowctrl_intf.bInterfaceNumber = status; |
| |
| status = -ENODEV; |
| |
| aowctrl_out_ep = usb_ep_autoconfig(cdev->gadget, &vs_aowctrl_out_ep_desc); |
| |
| if (!aowctrl_out_ep) { |
| goto fail; |
| } |
| |
| audio->aowctrl_out_ep = aowctrl_out_ep; |
| aowctrl_out_ep->driver_data = cdev; /* claim */ |
| |
| aowctrl_in_ep = usb_ep_autoconfig(cdev->gadget, &vs_aowctrl_in_ep_desc); |
| |
| if (!aowctrl_in_ep) |
| goto fail; |
| |
| audio->aowctrl_in_ep = aowctrl_in_ep; |
| aowctrl_in_ep->driver_data = cdev; /* claim */ |
| |
| usbinfo.dev = audio; |
| #endif |
| |
| |
| status = -ENOMEM; |
| |
| /* supcard all relevant hardware speeds... we expect that when |
| * hardware is dual speed, all bulk-capable endpoints work at |
| * both speeds |
| */ |
| |
| /* copy descriptors, and track endpoint copies */ |
| if (gadget_is_dualspeed(c->cdev->gadget)) { |
| c->highspeed = true; |
| f->hs_descriptors = usb_copy_descriptors(f_audio_desc); |
| } else |
| f->descriptors = usb_copy_descriptors(f_audio_desc); |
| |
| return 0; |
| |
| fail: |
| |
| return status; |
| } |
| |
| static void |
| f_audio_unbind(struct usb_configuration *c, struct usb_function *f) |
| { |
| struct usb_composite_dev *cdev = c->cdev; |
| struct f_audio *audio = func_to_audio(f); |
| |
| ERROR(cdev, "Inside f_audio_unbind\n"); |
| audio->urb_created = 0; |
| usb_free_descriptors(f->descriptors); |
| kfree(audio); |
| |
| #ifdef WLAN_AOW_ENABLED |
| free_aowctrl_ep_reqs(audio); |
| //TODO: Check on the below |
| //cancel_delayed_work(&audio->aowctrl_work); |
| flush_scheduled_work(); |
| destroy_aowctrl_queues(audio); |
| #endif |
| |
| } |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| /* Todo: add more control selecotor dynamically */ |
| int __init control_selector_init(struct f_audio *audio) |
| { |
| INIT_LIST_HEAD(&audio->cs); |
| #ifdef FEATURE_UNIT_SUPPORTED |
| list_add(&feature_unit.list, &audio->cs); |
| |
| INIT_LIST_HEAD(&feature_unit.control); |
| list_add(&mute_control.list, &feature_unit.control); |
| list_add(&volume_control.list, &feature_unit.control); |
| volume_control.data[_CUR] = 0xffc0; |
| volume_control.data[_MIN] = 0xe3a0; |
| volume_control.data[_MAX] = 0xfff0; |
| volume_control.data[_RES] = 0x0030; |
| #endif |
| |
| return 0; |
| } |
| static int gaudio_read_procmem(char *buf, char **start, off_t offset, |
| int count, int *eof, void *data) |
| { |
| struct f_audio *audio = (struct f_audio *)data; |
| int len = 0; |
| len += sprintf(buf+len,"\nAudio playback count = %li\n", count_audio_playback); |
| len += sprintf(buf+len,"\nAlternate Setting = %li Current Alt Setting = %li\n", \ |
| audio->altSetting, audio->curAltSetting); |
| return len; |
| } |
| #define BUFDUMP_ENABLED_WQ 1 |
| static int gaudio_readdata_procmem(char *buf, char **start, off_t offset, |
| int count, int *eof, void *data) |
| { |
| int i, len = 0; |
| char *src; |
| |
| src = &(dst[0][0]); |
| #ifdef BUFDUMP_ENABLED_WQ |
| for(i=0; i < count; i++) { |
| len += sprintf(buf+len,"%x", src[i]); |
| } |
| #endif |
| return len; |
| } |
| |
| #ifdef WLAN_AOW_ENABLED |
| |
| /*----------------------------------------------------------------------------- |
| * The following APIs are exposed for WLAN driver as a part of AoW feature |
| *-----------------------------------------------------------------------------*/ |
| |
| /** |
| * @brief Initialize the USB AoW Device |
| */ |
| static void init_usb_aow_dev(void) |
| { |
| usb_aow_dev.tx.set_audioparams = NULL; |
| usb_aow_dev.tx.send_data = NULL; |
| #ifdef WLAN_AOW_TXSCHED_ENABLED |
| usb_aow_dev.tx.dispatch_data = NULL; |
| #endif |
| usb_aow_dev.tx.send_ctrl = NULL; |
| usb_aow_dev.tx.get_tsf = NULL; |
| } |
| |
| |
| /** |
| * @brief Checks whether WLAN APIs are registered with USB or not. |
| * |
| * @return 1 if WLAN APIs are registered, 0 if not. |
| */ |
| static int is_aow_wlan_calls_registered(void) |
| { |
| int is_registered = 0; |
| |
| if ((usb_aow_dev.tx.set_audioparams != NULL) && |
| (usb_aow_dev.tx.send_data != NULL) && |
| #ifdef WLAN_AOW_TXSCHED_ENABLED |
| (usb_aow_dev.tx.dispatch_data != NULL) && |
| #endif |
| (usb_aow_dev.tx.send_ctrl != NULL) && |
| (usb_aow_dev.tx.get_tsf != NULL)) { |
| is_registered = 1; |
| } |
| |
| return is_registered; |
| } |
| |
| /** |
| * @brief Accept a control packet from WLAN and transmit it to host. |
| * |
| * @param[in] data The packet data. |
| * @param[in] len Length of thLength of the data. |
| * |
| * @return 0 on success, negative value on error. |
| */ |
| int usb_aow_rx_ctrl(char* data, int len) |
| { |
| int err; |
| struct f_audio *audio = usbinfo.dev; |
| struct usb_composite_dev *cdev = audio->card.func.config->cdev; |
| |
| if (!g_alt_setting_init_done || !(audio->aowctrl_in_req)) { |
| return -EINVAL; |
| } |
| |
| audio->aowctrl_in_req->length = len; |
| memcpy(audio->aowctrl_in_req->buf, data, len); |
| |
| |
| if (-EINPROGRESS == audio->aowctrl_in_req->status) { |
| ERROR(cdev, "Cannot accept AoW Control IN request since one is already queued\n"); |
| return -EINPROGRESS; |
| } |
| |
| err = usb_ep_queue(audio->aowctrl_in_ep, audio->aowctrl_in_req, GFP_ATOMIC); |
| if (err) { |
| ERROR(cdev, "%s queue req: %d\n", audio->aowctrl_in_ep->name, err); |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * @brief Set frame size to be used. |
| * |
| * @param[in] framesize Frame size multiplier. |
| * Valid values: 1 (2 ms frames) |
| * : 2 (4 ms frames) |
| * : 3 (6 ms frames) |
| * : 4 (8 ms frames) |
| * @return 0 on success, negative value on error. |
| */ |
| int usb_aow_set_frame_size(unsigned int framesize) |
| { |
| if ((framesize < MIN_FRAME_SIZE_FACTOR) || |
| (framesize > MAX_FRAME_SIZE_FACTOR)) { |
| return -EINVAL; |
| } |
| |
| g_audio_frame_size = (AUDIO_FRAME_SIZE/MAX_FRAME_SIZE_FACTOR) * framesize; |
| g_audio_buf_size = g_audio_frame_size * BUF_SIZE_FACTOR; |
| #ifdef USB_24BIT_AUDIO_ENABLED |
| g_audio_frame_size_24bit = (AUDIO_FRAME_SIZE_24BIT/MAX_FRAME_SIZE_FACTOR) * framesize; |
| g_audio_buf_size_24bit = g_audio_frame_size_24bit * BUF_SIZE_FACTOR; |
| #endif |
| |
| return 0; |
| } |
| |
| /** |
| * @brief Set alt setting to expect. |
| * |
| * This is a temporary requirement to work around some USB issues |
| * related to tear-down and setup of requests on varying alt settings. |
| * |
| * @param[in] altsetting Alt setting to expect. Valid values: 1-8 |
| * |
| * @return 0 on success, negative value on failure. |
| */ |
| |
| int usb_aow_set_exptd_alt_setting(unsigned int altsetting) |
| { |
| if ((altsetting < MIN_EXPECTED_ALT_SETTING) || |
| (altsetting > MAX_EXPECTED_ALT_SETTING)) { |
| return -EINVAL; |
| } |
| |
| g_expected_alt_setting = altsetting; |
| |
| return 0; |
| } |
| |
| |
| /* |
| * === FUNCTION ====================================================================== |
| * Name: aow_register_wlan_calls_to_usb |
| * Description: Register WLAN Transmit related calls, USB device will use them to |
| * send data to WLAN device. WLAN will call this device on bootup |
| * ===================================================================================== |
| */ |
| |
| int aow_register_wlan_calls_to_usb(void* set_audioparams, |
| void* tx_data, |
| #ifdef WLAN_AOW_TXSCHED_ENABLED |
| void* dispatch_data, |
| #endif |
| void* tx_ctrl, |
| void* get_tsf) |
| { |
| usb_aow_dev.tx.set_audioparams = set_audioparams; |
| usb_aow_dev.tx.send_data = tx_data; |
| #ifdef WLAN_AOW_TXSCHED_ENABLED |
| usb_aow_dev.tx.dispatch_data = dispatch_data; |
| #endif |
| usb_aow_dev.tx.send_ctrl = tx_ctrl; |
| usb_aow_dev.tx.get_tsf = get_tsf; |
| |
| return 0; |
| |
| }EXPORT_SYMBOL(aow_register_wlan_calls_to_usb); |
| #endif |
| |
| |
| |
| /** |
| * audio_bind_config - add USB audio fucntion to a configuration |
| * @c: the configuration to supcard the USB audio function |
| * Context: single threaded during gadget setup |
| * |
| * Returns zero on success, else negative errno. |
| */ |
| int __init audio_bind_config(struct usb_configuration *c) |
| { |
| struct f_audio *audio; |
| int status; |
| #ifdef WLAN_AOW_ENABLED |
| struct aowctrl_buf *outbuf = NULL; |
| int j; |
| |
| init_usb_aow_dev(); |
| wlan_aow_register_calls_to_usb(&usb_aow_dev); |
| aow_register_usb_calls_to_wlan(NULL, |
| usb_aow_rx_ctrl, |
| usb_aow_set_frame_size, |
| usb_aow_set_exptd_alt_setting); |
| #endif /* WLAN_AOW_ENABLED */ |
| |
| |
| /* allocate and initialize one new instance */ |
| audio = kzalloc(sizeof *audio, GFP_KERNEL); |
| if (!audio) |
| return -ENOMEM; |
| |
| audio->card.func.name = "g_audio"; |
| audio->card.gadget = c->cdev->gadget; |
| |
| create_proc_read_entry("gaudio", 0, NULL, gaudio_read_procmem, audio); |
| create_proc_read_entry("auddata", 0, NULL, gaudio_readdata_procmem, audio); |
| INIT_LIST_HEAD(&audio->play_queue); |
| INIT_LIST_HEAD(&audio->req_queue); |
| #ifdef WLAN_AOW_ENABLED |
| INIT_LIST_HEAD(&audio->aowctrl_queue); |
| INIT_LIST_HEAD(&audio->aowctrl_free_queue); |
| |
| for(j = 0; j < AOWCTRL_QUEUE_LEN; j++) |
| { |
| outbuf = aowctrl_buffer_alloc(AOWCTRL_PROT_BYTECOUNT); |
| |
| if (NULL == outbuf) { |
| return -ENOMEM; |
| } |
| |
| list_add_tail(&outbuf->list, &audio->aowctrl_free_queue); |
| } |
| #endif |
| |
| spin_lock_init(&audio->lock); |
| #ifdef WLAN_AOW_ENABLED |
| spin_lock_init (&audio->aowctrl_lock); |
| #endif |
| |
| #ifdef REMOVED_ALSA |
| /* set up ASLA audio devices */ |
| status = gaudio_setup(&audio->card); |
| if (status < 0) |
| goto setup_fail; |
| #endif |
| |
| #ifdef I2S_ENABLED |
| //ar7242_i2s_open(); |
| //ar7240_i2s_clk(63565868, 9091); |
| i2s_st = 1; |
| i2s_write_cnt = 0; |
| #endif |
| audio->card.func.strings = audio_strings; |
| audio->card.func.bind = f_audio_bind; |
| audio->card.func.unbind = f_audio_unbind; |
| audio->card.func.set_alt = f_audio_set_alt; |
| audio->card.func.setup = f_audio_setup; |
| audio->card.func.disable = f_audio_disable; |
| audio->out_desc = &as_out_ep_alt_1_desc; |
| #ifdef WLAN_AOW_ENABLED |
| audio->aowctrl_out_desc = &vs_aowctrl_out_ep_desc; |
| audio->aowctrl_in_desc = &vs_aowctrl_in_ep_desc; |
| #endif |
| |
| control_selector_init(audio); |
| |
| INIT_WORK(&audio->playback_work, f_audio_playback_work); |
| #ifdef WLAN_AOW_ENABLED |
| INIT_WORK(&audio->aowctrl_work, aowctrl_work); |
| #endif |
| |
| status = usb_add_function(c, &audio->card.func); |
| if (status) |
| goto add_fail; |
| |
| INFO(c->cdev, "max_audio_buf_size %d, req_buf_size %d, req_count %d\n", |
| max_audio_buf_size, req_buf_size, req_count); |
| |
| return status; |
| |
| add_fail: |
| gaudio_cleanup(&audio->card); |
| setup_fail: |
| kfree(audio); |
| return status; |
| } |
