145051539SThomas Gleixner /* SPDX-License-Identifier: GPL-2.0-only */ 2e5558679SPavan Savoy /* 3e5558679SPavan Savoy * Shared Transport Header file 4e5558679SPavan Savoy * To be included by the protocol stack drivers for 5e5558679SPavan Savoy * Texas Instruments BT,FM and GPS combo chip drivers 6e5558679SPavan Savoy * and also serves the sub-modules of the shared transport driver. 7e5558679SPavan Savoy * 8e5558679SPavan Savoy * Copyright (C) 2009-2010 Texas Instruments 9e5558679SPavan Savoy * Author: Pavan Savoy <pavan_savoy@ti.com> 10e5558679SPavan Savoy */ 11e5558679SPavan Savoy 12e5558679SPavan Savoy #ifndef TI_WILINK_ST_H 13e5558679SPavan Savoy #define TI_WILINK_ST_H 14e5558679SPavan Savoy 159624f615SMircea Gherzan #include <linux/skbuff.h> 169624f615SMircea Gherzan 17e5558679SPavan Savoy /** 18e5558679SPavan Savoy * enum proto-type - The protocol on WiLink chips which share a 19e5558679SPavan Savoy * common physical interface like UART. 20e5558679SPavan Savoy */ 21e5558679SPavan Savoy enum proto_type { 22e5558679SPavan Savoy ST_BT, 23e5558679SPavan Savoy ST_FM, 24e5558679SPavan Savoy ST_GPS, 255c88b021SPavan Savoy ST_MAX_CHANNELS = 16, 26e5558679SPavan Savoy }; 27e5558679SPavan Savoy 28e5558679SPavan Savoy /** 29e5558679SPavan Savoy * struct st_proto_s - Per Protocol structure from BT/FM/GPS to ST 30e5558679SPavan Savoy * @type: type of the protocol being registered among the 31e5558679SPavan Savoy * available proto_type(BT, FM, GPS the protocol which share TTY). 32e5558679SPavan Savoy * @recv: the receiver callback pointing to a function in the 33e5558679SPavan Savoy * protocol drivers called by the ST driver upon receiving 34e5558679SPavan Savoy * relevant data. 35e5558679SPavan Savoy * @match_packet: reserved for future use, to make ST more generic 36e5558679SPavan Savoy * @reg_complete_cb: callback handler pointing to a function in protocol 37e5558679SPavan Savoy * handler called by ST when the pending registrations are complete. 38e5558679SPavan Savoy * The registrations are marked pending, in situations when fw 39e5558679SPavan Savoy * download is in progress. 40e5558679SPavan Savoy * @write: pointer to function in ST provided to protocol drivers from ST, 41e5558679SPavan Savoy * to be made use when protocol drivers have data to send to TTY. 42e5558679SPavan Savoy * @priv_data: privdate data holder for the protocol drivers, sent 43e5558679SPavan Savoy * from the protocol drivers during registration, and sent back on 44e5558679SPavan Savoy * reg_complete_cb and recv. 455c88b021SPavan Savoy * @chnl_id: channel id the protocol driver is interested in, the channel 465c88b021SPavan Savoy * id is nothing but the 1st byte of the packet in UART frame. 475c88b021SPavan Savoy * @max_frame_size: size of the largest frame the protocol can receive. 485c88b021SPavan Savoy * @hdr_len: length of the header structure of the protocol. 495c88b021SPavan Savoy * @offset_len_in_hdr: this provides the offset of the length field in the 505c88b021SPavan Savoy * header structure of the protocol header, to assist ST to know 515c88b021SPavan Savoy * how much to receive, if the data is split across UART frames. 525c88b021SPavan Savoy * @len_size: whether the length field inside the header is 2 bytes 535c88b021SPavan Savoy * or 1 byte. 545c88b021SPavan Savoy * @reserve: the number of bytes ST needs to reserve in the skb being 555c88b021SPavan Savoy * prepared for the protocol driver. 56e5558679SPavan Savoy */ 57e5558679SPavan Savoy struct st_proto_s { 58e5558679SPavan Savoy enum proto_type type; 59e5558679SPavan Savoy long (*recv) (void *, struct sk_buff *); 60e5558679SPavan Savoy unsigned char (*match_packet) (const unsigned char *data); 614360fa22SGeert Uytterhoeven void (*reg_complete_cb) (void *, int data); 62e5558679SPavan Savoy long (*write) (struct sk_buff *skb); 63e5558679SPavan Savoy void *priv_data; 645c88b021SPavan Savoy 655c88b021SPavan Savoy unsigned char chnl_id; 665c88b021SPavan Savoy unsigned short max_frame_size; 675c88b021SPavan Savoy unsigned char hdr_len; 685c88b021SPavan Savoy unsigned char offset_len_in_hdr; 695c88b021SPavan Savoy unsigned char len_size; 705c88b021SPavan Savoy unsigned char reserve; 71e5558679SPavan Savoy }; 72e5558679SPavan Savoy 73e5558679SPavan Savoy extern long st_register(struct st_proto_s *); 745c88b021SPavan Savoy extern long st_unregister(struct st_proto_s *); 75e5558679SPavan Savoy 76e5558679SPavan Savoy 77e5558679SPavan Savoy /* 78e5558679SPavan Savoy * header information used by st_core.c 79e5558679SPavan Savoy */ 80e5558679SPavan Savoy 81e5558679SPavan Savoy /* states of protocol list */ 82e5558679SPavan Savoy #define ST_NOTEMPTY 1 83e5558679SPavan Savoy #define ST_EMPTY 0 84e5558679SPavan Savoy 85e5558679SPavan Savoy /* 86e5558679SPavan Savoy * possible st_states 87e5558679SPavan Savoy */ 88e5558679SPavan Savoy #define ST_INITIALIZING 1 89e5558679SPavan Savoy #define ST_REG_IN_PROGRESS 2 90e5558679SPavan Savoy #define ST_REG_PENDING 3 91e5558679SPavan Savoy #define ST_WAITING_FOR_RESP 4 92e5558679SPavan Savoy 93e5558679SPavan Savoy /** 94e5558679SPavan Savoy * struct st_data_s - ST core internal structure 95e5558679SPavan Savoy * @st_state: different states of ST like initializing, registration 96e5558679SPavan Savoy * in progress, this is mainly used to return relevant err codes 97e5558679SPavan Savoy * when protocol drivers are registering. It is also used to track 98e5558679SPavan Savoy * the recv function, as in during fw download only HCI events 99e5558679SPavan Savoy * can occur , where as during other times other events CH8, CH9 100e5558679SPavan Savoy * can occur. 101e5558679SPavan Savoy * @tty: tty provided by the TTY core for line disciplines. 102e5558679SPavan Savoy * @tx_skb: If for some reason the tty's write returns lesser bytes written 103e5558679SPavan Savoy * then to maintain the rest of data to be written on next instance. 104e5558679SPavan Savoy * This needs to be protected, hence the lock inside wakeup func. 105e5558679SPavan Savoy * @tx_state: if the data is being written onto the TTY and protocol driver 106e5558679SPavan Savoy * wants to send more, queue up data and mark that there is 107e5558679SPavan Savoy * more data to send. 108e5558679SPavan Savoy * @list: the list of protocols registered, only MAX can exist, one protocol 109e5558679SPavan Savoy * can register only once. 110e5558679SPavan Savoy * @rx_state: states to be maintained inside st's tty receive 111e5558679SPavan Savoy * @rx_count: count to be maintained inside st's tty receieve 112e5558679SPavan Savoy * @rx_skb: the skb where all data for a protocol gets accumulated, 113e5558679SPavan Savoy * since tty might not call receive when a complete event packet 114e5558679SPavan Savoy * is received, the states, count and the skb needs to be maintained. 1155c88b021SPavan Savoy * @rx_chnl: the channel ID for which the data is getting accumalated for. 116e5558679SPavan Savoy * @txq: the list of skbs which needs to be sent onto the TTY. 117e5558679SPavan Savoy * @tx_waitq: if the chip is not in AWAKE state, the skbs needs to be queued 118e5558679SPavan Savoy * up in here, PM(WAKEUP_IND) data needs to be sent and then the skbs 119e5558679SPavan Savoy * from waitq can be moved onto the txq. 120e5558679SPavan Savoy * Needs locking too. 121e5558679SPavan Savoy * @lock: the lock to protect skbs, queues, and ST states. 122e5558679SPavan Savoy * @protos_registered: count of the protocols registered, also when 0 the 123e5558679SPavan Savoy * chip enable gpio can be toggled, and when it changes to 1 the fw 124e5558679SPavan Savoy * needs to be downloaded to initialize chip side ST. 125e5558679SPavan Savoy * @ll_state: the various PM states the chip can be, the states are notified 126e5558679SPavan Savoy * to us, when the chip sends relevant PM packets(SLEEP_IND, WAKE_IND). 127e5558679SPavan Savoy * @kim_data: reference to the parent encapsulating structure. 128e5558679SPavan Savoy * 129e5558679SPavan Savoy */ 130e5558679SPavan Savoy struct st_data_s { 131e5558679SPavan Savoy unsigned long st_state; 132e5558679SPavan Savoy struct sk_buff *tx_skb; 133e5558679SPavan Savoy #define ST_TX_SENDING 1 134e5558679SPavan Savoy #define ST_TX_WAKEUP 2 135e5558679SPavan Savoy unsigned long tx_state; 1365c88b021SPavan Savoy struct st_proto_s *list[ST_MAX_CHANNELS]; 137764b0c4bSPavan Savoy bool is_registered[ST_MAX_CHANNELS]; 138e5558679SPavan Savoy unsigned long rx_state; 139e5558679SPavan Savoy unsigned long rx_count; 140e5558679SPavan Savoy struct sk_buff *rx_skb; 1415c88b021SPavan Savoy unsigned char rx_chnl; 142e5558679SPavan Savoy struct sk_buff_head txq, tx_waitq; 143e5558679SPavan Savoy spinlock_t lock; 144e5558679SPavan Savoy unsigned char protos_registered; 145e5558679SPavan Savoy unsigned long ll_state; 146e5558679SPavan Savoy void *kim_data; 147764b0c4bSPavan Savoy struct tty_struct *tty; 148b05b7c7cSMuhammad Hamza Farooq struct work_struct work_write_wakeup; 149e5558679SPavan Savoy }; 150e5558679SPavan Savoy 151ef04d121SPavan Savoy /* 152ef04d121SPavan Savoy * wrapper around tty->ops->write_room to check 153ef04d121SPavan Savoy * availability during firmware download 154ef04d121SPavan Savoy */ 155ef04d121SPavan Savoy int st_get_uart_wr_room(struct st_data_s *st_gdata); 156e5558679SPavan Savoy /** 157e5558679SPavan Savoy * st_int_write - 158e5558679SPavan Savoy * point this to tty->driver->write or tty->ops->write 159e5558679SPavan Savoy * depending upon the kernel version 160e5558679SPavan Savoy */ 161e5558679SPavan Savoy int st_int_write(struct st_data_s*, const unsigned char*, int); 162e5558679SPavan Savoy 163e5558679SPavan Savoy /** 164e5558679SPavan Savoy * st_write - 165e5558679SPavan Savoy * internal write function, passed onto protocol drivers 166e5558679SPavan Savoy * via the write function ptr of protocol struct 167e5558679SPavan Savoy */ 168e5558679SPavan Savoy long st_write(struct sk_buff *); 169e5558679SPavan Savoy 170e5558679SPavan Savoy /* function to be called from ST-LL */ 171e5558679SPavan Savoy void st_ll_send_frame(enum proto_type, struct sk_buff *); 172e5558679SPavan Savoy 173e5558679SPavan Savoy /* internal wake up function */ 174e5558679SPavan Savoy void st_tx_wakeup(struct st_data_s *st_data); 175e5558679SPavan Savoy 176e5558679SPavan Savoy /* init, exit entry funcs called from KIM */ 177e5558679SPavan Savoy int st_core_init(struct st_data_s **); 178e5558679SPavan Savoy void st_core_exit(struct st_data_s *); 179e5558679SPavan Savoy 180e5558679SPavan Savoy /* ask for reference from KIM */ 181e5558679SPavan Savoy void st_kim_ref(struct st_data_s **, int); 182e5558679SPavan Savoy 183e5558679SPavan Savoy #define GPS_STUB_TEST 184e5558679SPavan Savoy #ifdef GPS_STUB_TEST 185e5558679SPavan Savoy int gps_chrdrv_stub_write(const unsigned char*, int); 186e5558679SPavan Savoy void gps_chrdrv_stub_init(void); 187e5558679SPavan Savoy #endif 188e5558679SPavan Savoy 189e5558679SPavan Savoy /* 190e5558679SPavan Savoy * header information used by st_kim.c 191e5558679SPavan Savoy */ 192e5558679SPavan Savoy 193e5558679SPavan Savoy /* time in msec to wait for 194e5558679SPavan Savoy * line discipline to be installed 195e5558679SPavan Savoy */ 196ec60d0adSPavan Savoy #define LDISC_TIME 1000 197ec60d0adSPavan Savoy #define CMD_RESP_TIME 800 198ef04d121SPavan Savoy #define CMD_WR_TIME 5000 199e5558679SPavan Savoy #define MAKEWORD(a, b) ((unsigned short)(((unsigned char)(a)) \ 200e5558679SPavan Savoy | ((unsigned short)((unsigned char)(b))) << 8)) 201e5558679SPavan Savoy 202e5558679SPavan Savoy #define GPIO_HIGH 1 203e5558679SPavan Savoy #define GPIO_LOW 0 204e5558679SPavan Savoy 205e5558679SPavan Savoy /* the Power-On-Reset logic, requires to attempt 206e5558679SPavan Savoy * to download firmware onto chip more than once 207e5558679SPavan Savoy * since the self-test for chip takes a while 208e5558679SPavan Savoy */ 209e5558679SPavan Savoy #define POR_RETRY_COUNT 5 210e5558679SPavan Savoy 211e5558679SPavan Savoy /** 212e5558679SPavan Savoy * struct chip_version - save the chip version 213e5558679SPavan Savoy */ 214e5558679SPavan Savoy struct chip_version { 215e5558679SPavan Savoy unsigned short full; 216e5558679SPavan Savoy unsigned short chip; 217e5558679SPavan Savoy unsigned short min_ver; 218e5558679SPavan Savoy unsigned short maj_ver; 219e5558679SPavan Savoy }; 220e5558679SPavan Savoy 221ec60d0adSPavan Savoy #define UART_DEV_NAME_LEN 32 222e5558679SPavan Savoy /** 223e5558679SPavan Savoy * struct kim_data_s - the KIM internal data, embedded as the 224e5558679SPavan Savoy * platform's drv data. One for each ST device in the system. 225e5558679SPavan Savoy * @uim_pid: KIM needs to communicate with UIM to request to install 226e5558679SPavan Savoy * the ldisc by opening UART when protocol drivers register. 227e5558679SPavan Savoy * @kim_pdev: the platform device added in one of the board-XX.c file 228e5558679SPavan Savoy * in arch/XX/ directory, 1 for each ST device. 229e5558679SPavan Savoy * @kim_rcvd: completion handler to notify when data was received, 230e5558679SPavan Savoy * mainly used during fw download, which involves multiple send/wait 231e5558679SPavan Savoy * for each of the HCI-VS commands. 232e5558679SPavan Savoy * @ldisc_installed: completion handler to notify that the UIM accepted 233e5558679SPavan Savoy * the request to install ldisc, notify from tty_open which suggests 234e5558679SPavan Savoy * the ldisc was properly installed. 235e5558679SPavan Savoy * @resp_buffer: data buffer for the .bts fw file name. 236e5558679SPavan Savoy * @fw_entry: firmware class struct to request/release the fw. 237e5558679SPavan Savoy * @rx_state: the rx state for kim's receive func during fw download. 238e5558679SPavan Savoy * @rx_count: the rx count for the kim's receive func during fw download. 239e5558679SPavan Savoy * @rx_skb: all of fw data might not come at once, and hence data storage for 240e5558679SPavan Savoy * whole of the fw response, only HCI_EVENTs and hence diff from ST's 241e5558679SPavan Savoy * response. 242e5558679SPavan Savoy * @core_data: ST core's data, which mainly is the tty's disc_data 243e5558679SPavan Savoy * @version: chip version available via a sysfs entry. 244e5558679SPavan Savoy * 245e5558679SPavan Savoy */ 246e5558679SPavan Savoy struct kim_data_s { 247e5558679SPavan Savoy long uim_pid; 248e5558679SPavan Savoy struct platform_device *kim_pdev; 249e5558679SPavan Savoy struct completion kim_rcvd, ldisc_installed; 250e5558679SPavan Savoy char resp_buffer[30]; 251e5558679SPavan Savoy const struct firmware *fw_entry; 25263e144c9SDan Carpenter unsigned nshutdown; 253e5558679SPavan Savoy unsigned long rx_state; 254e5558679SPavan Savoy unsigned long rx_count; 255e5558679SPavan Savoy struct sk_buff *rx_skb; 256e5558679SPavan Savoy struct st_data_s *core_data; 257e5558679SPavan Savoy struct chip_version version; 258ec60d0adSPavan Savoy unsigned char ldisc_install; 259ffdbb715SLee Jones unsigned char dev_name[UART_DEV_NAME_LEN + 1]; 26063e144c9SDan Carpenter unsigned flow_cntrl; 26163e144c9SDan Carpenter unsigned baud_rate; 262e5558679SPavan Savoy }; 263e5558679SPavan Savoy 264e5558679SPavan Savoy /** 265e5558679SPavan Savoy * functions called when 1 of the protocol drivers gets 266e5558679SPavan Savoy * registered, these need to communicate with UIM to request 267e5558679SPavan Savoy * ldisc installed, read chip_version, download relevant fw 268e5558679SPavan Savoy */ 269e5558679SPavan Savoy long st_kim_start(void *); 270e5558679SPavan Savoy long st_kim_stop(void *); 271e5558679SPavan Savoy 272e5558679SPavan Savoy void st_kim_complete(void *); 273e5558679SPavan Savoy void kim_st_list_protocols(struct st_data_s *, void *); 274*ead03e72SJiri Slaby (SUSE) void st_kim_recv(void *disc_data, const u8 *data, size_t count); 27527712b39SPavan Savoy 276e5558679SPavan Savoy 277e5558679SPavan Savoy /* 278e5558679SPavan Savoy * BTS headers 279e5558679SPavan Savoy */ 280e5558679SPavan Savoy #define ACTION_SEND_COMMAND 1 281e5558679SPavan Savoy #define ACTION_WAIT_EVENT 2 282e5558679SPavan Savoy #define ACTION_SERIAL 3 283e5558679SPavan Savoy #define ACTION_DELAY 4 284e5558679SPavan Savoy #define ACTION_RUN_SCRIPT 5 285e5558679SPavan Savoy #define ACTION_REMARKS 6 286e5558679SPavan Savoy 287e5558679SPavan Savoy /** 288e5558679SPavan Savoy * struct bts_header - the fw file is NOT binary which can 289e5558679SPavan Savoy * be sent onto TTY as is. The .bts is more a script 290e5558679SPavan Savoy * file which has different types of actions. 291e5558679SPavan Savoy * Each such action needs to be parsed by the KIM and 292e5558679SPavan Savoy * relevant procedure to be called. 293e5558679SPavan Savoy */ 294e5558679SPavan Savoy struct bts_header { 295e5558679SPavan Savoy u32 magic; 296e5558679SPavan Savoy u32 version; 297e5558679SPavan Savoy u8 future[24]; 2984ea19ecfSGustavo A. R. Silva u8 actions[]; 299e5558679SPavan Savoy } __attribute__ ((packed)); 300e5558679SPavan Savoy 301e5558679SPavan Savoy /** 302e5558679SPavan Savoy * struct bts_action - Each .bts action has its own type of 303e5558679SPavan Savoy * data. 304e5558679SPavan Savoy */ 305e5558679SPavan Savoy struct bts_action { 306e5558679SPavan Savoy u16 type; 307e5558679SPavan Savoy u16 size; 3084ea19ecfSGustavo A. R. Silva u8 data[]; 309e5558679SPavan Savoy } __attribute__ ((packed)); 310e5558679SPavan Savoy 311e5558679SPavan Savoy struct bts_action_send { 312e5558679SPavan Savoy u8 data[0]; 313e5558679SPavan Savoy } __attribute__ ((packed)); 314e5558679SPavan Savoy 315e5558679SPavan Savoy struct bts_action_wait { 316e5558679SPavan Savoy u32 msec; 317e5558679SPavan Savoy u32 size; 3184ea19ecfSGustavo A. R. Silva u8 data[]; 319e5558679SPavan Savoy } __attribute__ ((packed)); 320e5558679SPavan Savoy 321e5558679SPavan Savoy struct bts_action_delay { 322e5558679SPavan Savoy u32 msec; 323e5558679SPavan Savoy } __attribute__ ((packed)); 324e5558679SPavan Savoy 325e5558679SPavan Savoy struct bts_action_serial { 326e5558679SPavan Savoy u32 baud; 327e5558679SPavan Savoy u32 flow_control; 328e5558679SPavan Savoy } __attribute__ ((packed)); 329e5558679SPavan Savoy 330e5558679SPavan Savoy /** 331e5558679SPavan Savoy * struct hci_command - the HCI-VS for intrepreting 332e5558679SPavan Savoy * the change baud rate of host-side UART, which 333e5558679SPavan Savoy * needs to be ignored, since UIM would do that 334e5558679SPavan Savoy * when it receives request from KIM for ldisc installation. 335e5558679SPavan Savoy */ 336e5558679SPavan Savoy struct hci_command { 337e5558679SPavan Savoy u8 prefix; 338e5558679SPavan Savoy u16 opcode; 339e5558679SPavan Savoy u8 plen; 340e5558679SPavan Savoy u32 speed; 341e5558679SPavan Savoy } __attribute__ ((packed)); 342e5558679SPavan Savoy 343e5558679SPavan Savoy /* 344e5558679SPavan Savoy * header information used by st_ll.c 345e5558679SPavan Savoy */ 346e5558679SPavan Savoy 347e5558679SPavan Savoy /* ST LL receiver states */ 348e5558679SPavan Savoy #define ST_W4_PACKET_TYPE 0 3495c88b021SPavan Savoy #define ST_W4_HEADER 1 3505c88b021SPavan Savoy #define ST_W4_DATA 2 351e5558679SPavan Savoy 352e5558679SPavan Savoy /* ST LL state machines */ 353e5558679SPavan Savoy #define ST_LL_ASLEEP 0 354e5558679SPavan Savoy #define ST_LL_ASLEEP_TO_AWAKE 1 355e5558679SPavan Savoy #define ST_LL_AWAKE 2 356e5558679SPavan Savoy #define ST_LL_AWAKE_TO_ASLEEP 3 357e5558679SPavan Savoy #define ST_LL_INVALID 4 358e5558679SPavan Savoy 359e5558679SPavan Savoy /* different PM notifications coming from chip */ 360e5558679SPavan Savoy #define LL_SLEEP_IND 0x30 361e5558679SPavan Savoy #define LL_SLEEP_ACK 0x31 362e5558679SPavan Savoy #define LL_WAKE_UP_IND 0x32 363e5558679SPavan Savoy #define LL_WAKE_UP_ACK 0x33 364e5558679SPavan Savoy 365e5558679SPavan Savoy /* initialize and de-init ST LL */ 366e5558679SPavan Savoy long st_ll_init(struct st_data_s *); 367e5558679SPavan Savoy long st_ll_deinit(struct st_data_s *); 368e5558679SPavan Savoy 369e5558679SPavan Savoy /** 370e5558679SPavan Savoy * enable/disable ST LL along with KIM start/stop 371e5558679SPavan Savoy * called by ST Core 372e5558679SPavan Savoy */ 373e5558679SPavan Savoy void st_ll_enable(struct st_data_s *); 374e5558679SPavan Savoy void st_ll_disable(struct st_data_s *); 375e5558679SPavan Savoy 376e5558679SPavan Savoy /** 377e5558679SPavan Savoy * various funcs used by ST core to set/get the various PM states 378e5558679SPavan Savoy * of the chip. 379e5558679SPavan Savoy */ 380e5558679SPavan Savoy unsigned long st_ll_getstate(struct st_data_s *); 381e5558679SPavan Savoy unsigned long st_ll_sleep_state(struct st_data_s *, unsigned char); 382e5558679SPavan Savoy void st_ll_wakeup(struct st_data_s *); 383e5558679SPavan Savoy 384e5558679SPavan Savoy /* 385e5558679SPavan Savoy * header information used by st_core.c for FM and GPS 386e5558679SPavan Savoy * packet parsing, the bluetooth headers are already available 387e5558679SPavan Savoy * at net/bluetooth/ 388e5558679SPavan Savoy */ 389e5558679SPavan Savoy 390e5558679SPavan Savoy struct fm_event_hdr { 391e5558679SPavan Savoy u8 plen; 392e5558679SPavan Savoy } __attribute__ ((packed)); 393e5558679SPavan Savoy 394e5558679SPavan Savoy #define FM_MAX_FRAME_SIZE 0xFF /* TODO: */ 395e5558679SPavan Savoy #define FM_EVENT_HDR_SIZE 1 /* size of fm_event_hdr */ 396e5558679SPavan Savoy #define ST_FM_CH8_PKT 0x8 397e5558679SPavan Savoy 398e5558679SPavan Savoy /* gps stuff */ 399e5558679SPavan Savoy struct gps_event_hdr { 400e5558679SPavan Savoy u8 opcode; 401e5558679SPavan Savoy u16 plen; 402e5558679SPavan Savoy } __attribute__ ((packed)); 403e5558679SPavan Savoy 4040d7c5f25SPavan Savoy /** 4050d7c5f25SPavan Savoy * struct ti_st_plat_data - platform data shared between ST driver and 4060d7c5f25SPavan Savoy * platform specific board file which adds the ST device. 4070d7c5f25SPavan Savoy * @nshutdown_gpio: Host's GPIO line to which chip's BT_EN is connected. 4080d7c5f25SPavan Savoy * @dev_name: The UART/TTY name to which chip is interfaced. (eg: /dev/ttyS1) 4090d7c5f25SPavan Savoy * @flow_cntrl: Should always be 1, since UART's CTS/RTS is used for PM 4100d7c5f25SPavan Savoy * purposes. 4110d7c5f25SPavan Savoy * @baud_rate: The baud rate supported by the Host UART controller, this will 4120d7c5f25SPavan Savoy * be shared across with the chip via a HCI VS command from User-Space Init 4130d7c5f25SPavan Savoy * Mgr application. 4140d7c5f25SPavan Savoy * @suspend: 4150d7c5f25SPavan Savoy * @resume: legacy PM routines hooked to platform specific board file, so as 4160d7c5f25SPavan Savoy * to take chip-host interface specific action. 4170d7c5f25SPavan Savoy * @chip_enable: 4180d7c5f25SPavan Savoy * @chip_disable: Platform/Interface specific mux mode setting, GPIO 4190d7c5f25SPavan Savoy * configuring, Host side PM disabling etc.. can be done here. 4200d7c5f25SPavan Savoy * @chip_asleep: 4210d7c5f25SPavan Savoy * @chip_awake: Chip specific deep sleep states is communicated to Host 4220d7c5f25SPavan Savoy * specific board-xx.c to take actions such as cut UART clocks when chip 4230d7c5f25SPavan Savoy * asleep or run host faster when chip awake etc.. 4240d7c5f25SPavan Savoy * 4250d7c5f25SPavan Savoy */ 426ec60d0adSPavan Savoy struct ti_st_plat_data { 42763e144c9SDan Carpenter u32 nshutdown_gpio; 428ec60d0adSPavan Savoy unsigned char dev_name[UART_DEV_NAME_LEN]; /* uart name */ 42963e144c9SDan Carpenter u32 flow_cntrl; /* flow control flag */ 43063e144c9SDan Carpenter u32 baud_rate; 431ec60d0adSPavan Savoy int (*suspend)(struct platform_device *, pm_message_t); 432ec60d0adSPavan Savoy int (*resume)(struct platform_device *); 4330d7c5f25SPavan Savoy int (*chip_enable) (struct kim_data_s *); 4340d7c5f25SPavan Savoy int (*chip_disable) (struct kim_data_s *); 4350d7c5f25SPavan Savoy int (*chip_asleep) (struct kim_data_s *); 4360d7c5f25SPavan Savoy int (*chip_awake) (struct kim_data_s *); 437ec60d0adSPavan Savoy }; 438ec60d0adSPavan Savoy 439e5558679SPavan Savoy #endif /* TI_WILINK_ST_H */ 440