diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/staging/ti-st/bt_drv.c | 2 | ||||
| -rw-r--r-- | drivers/staging/ti-st/fm.h | 13 | ||||
| -rw-r--r-- | drivers/staging/ti-st/st.h | 83 | ||||
| -rw-r--r-- | drivers/staging/ti-st/st_core.c | 10 | ||||
| -rw-r--r-- | drivers/staging/ti-st/st_core.h | 128 | ||||
| -rw-r--r-- | drivers/staging/ti-st/st_kim.c | 5 | ||||
| -rw-r--r-- | drivers/staging/ti-st/st_kim.h | 180 | ||||
| -rw-r--r-- | drivers/staging/ti-st/st_ll.c | 4 | ||||
| -rw-r--r-- | drivers/staging/ti-st/st_ll.h | 69 | ||||
| -rw-r--r-- | drivers/staging/ti-st/ti_wilink_st.h | 409 |
10 files changed, 417 insertions, 486 deletions
diff --git a/drivers/staging/ti-st/bt_drv.c b/drivers/staging/ti-st/bt_drv.c index 61ae98833b17..50da66db72c2 100644 --- a/drivers/staging/ti-st/bt_drv.c +++ b/drivers/staging/ti-st/bt_drv.c @@ -24,7 +24,7 @@ #include <net/bluetooth/bluetooth.h> #include <net/bluetooth/hci_core.h> -#include "st.h" +#include "ti_wilink_st.h" #include "bt_drv.h" /* Define this macro to get debug msg */ diff --git a/drivers/staging/ti-st/fm.h b/drivers/staging/ti-st/fm.h deleted file mode 100644 index 962ccd60c785..000000000000 --- a/drivers/staging/ti-st/fm.h +++ /dev/null @@ -1,13 +0,0 @@ -struct fm_event_hdr { - u8 plen; -} __attribute__ ((packed)); - -#define FM_MAX_FRAME_SIZE 0xFF /* TODO: */ -#define FM_EVENT_HDR_SIZE 1 /* size of fm_event_hdr */ -#define ST_FM_CH8_PKT 0x8 - -/* gps stuff */ -struct gps_event_hdr { - u8 opcode; - u16 plen; -} __attribute__ ((packed)); diff --git a/drivers/staging/ti-st/st.h b/drivers/staging/ti-st/st.h deleted file mode 100644 index 1b3060eb2921..000000000000 --- a/drivers/staging/ti-st/st.h +++ /dev/null @@ -1,83 +0,0 @@ -/* - * Shared Transport Header file - * To be included by the protocol stack drivers for - * Texas Instruments BT,FM and GPS combo chip drivers - * - * Copyright (C) 2009 Texas Instruments - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - */ - -#ifndef ST_H -#define ST_H - -#include <linux/skbuff.h> - -/* TODO: - * Move the following to tty.h upon acceptance - */ -#define N_TI_WL 20 /* Ldisc for TI's WL BT, FM, GPS combo chips */ - -/** - * enum kim_gpio_state - Few protocols such as FM have ACTIVE LOW - * gpio states for their chip/core enable gpios - */ -enum kim_gpio_state { - KIM_GPIO_INACTIVE, - KIM_GPIO_ACTIVE, -}; - -/** - * enum proto-type - The protocol on WiLink chips which share a - * common physical interface like UART. - */ -enum proto_type { - ST_BT, - ST_FM, - ST_GPS, - ST_MAX, -}; - -/** - * struct st_proto_s - Per Protocol structure from BT/FM/GPS to ST - * @type: type of the protocol being registered among the - * available proto_type(BT, FM, GPS the protocol which share TTY). - * @recv: the receiver callback pointing to a function in the - * protocol drivers called by the ST driver upon receiving - * relevant data. - * @match_packet: reserved for future use, to make ST more generic - * @reg_complete_cb: callback handler pointing to a function in protocol - * handler called by ST when the pending registrations are complete. - * The registrations are marked pending, in situations when fw - * download is in progress. - * @write: pointer to function in ST provided to protocol drivers from ST, - * to be made use when protocol drivers have data to send to TTY. - * @priv_data: privdate data holder for the protocol drivers, sent - * from the protocol drivers during registration, and sent back on - * reg_complete_cb and recv. - */ -struct st_proto_s { - enum proto_type type; - long (*recv) (void *, struct sk_buff *); - unsigned char (*match_packet) (const unsigned char *data); - void (*reg_complete_cb) (void *, char data); - long (*write) (struct sk_buff *skb); - void *priv_data; -}; - -extern long st_register(struct st_proto_s *); -extern long st_unregister(enum proto_type); - -#endif /* ST_H */ diff --git a/drivers/staging/ti-st/st_core.c b/drivers/staging/ti-st/st_core.c index fad97d7f0421..03397bee37db 100644 --- a/drivers/staging/ti-st/st_core.c +++ b/drivers/staging/ti-st/st_core.c @@ -28,15 +28,7 @@ #include <net/bluetooth/bluetooth.h> #include <net/bluetooth/hci_core.h> #include <net/bluetooth/hci.h> -#include "fm.h" -/* - * packet formats for fm and gps - * #include "gps.h" - */ -#include "st_core.h" -#include "st_kim.h" -#include "st_ll.h" -#include "st.h" +#include "ti_wilink_st.h" /* strings to be used for rfkill entries and by * ST Core to be used for sysfs debug entry diff --git a/drivers/staging/ti-st/st_core.h b/drivers/staging/ti-st/st_core.h deleted file mode 100644 index 8601320a679e..000000000000 --- a/drivers/staging/ti-st/st_core.h +++ /dev/null @@ -1,128 +0,0 @@ -/* - * Shared Transport Core header file - * - * Copyright (C) 2009 Texas Instruments - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - */ - -#ifndef ST_CORE_H -#define ST_CORE_H - -#include <linux/skbuff.h> -#include "st.h" - -/* states of protocol list */ -#define ST_NOTEMPTY 1 -#define ST_EMPTY 0 - -/* - * possible st_states - */ -#define ST_INITIALIZING 1 -#define ST_REG_IN_PROGRESS 2 -#define ST_REG_PENDING 3 -#define ST_WAITING_FOR_RESP 4 - -/** - * struct st_data_s - ST core internal structure - * @st_state: different states of ST like initializing, registration - * in progress, this is mainly used to return relevant err codes - * when protocol drivers are registering. It is also used to track - * the recv function, as in during fw download only HCI events - * can occur , where as during other times other events CH8, CH9 - * can occur. - * @tty: tty provided by the TTY core for line disciplines. - * @ldisc_ops: the procedures that this line discipline registers with TTY. - * @tx_skb: If for some reason the tty's write returns lesser bytes written - * then to maintain the rest of data to be written on next instance. - * This needs to be protected, hence the lock inside wakeup func. - * @tx_state: if the data is being written onto the TTY and protocol driver - * wants to send more, queue up data and mark that there is - * more data to send. - * @list: the list of protocols registered, only MAX can exist, one protocol - * can register only once. - * @rx_state: states to be maintained inside st's tty receive - * @rx_count: count to be maintained inside st's tty receieve - * @rx_skb: the skb where all data for a protocol gets accumulated, - * since tty might not call receive when a complete event packet - * is received, the states, count and the skb needs to be maintained. - * @txq: the list of skbs which needs to be sent onto the TTY. - * @tx_waitq: if the chip is not in AWAKE state, the skbs needs to be queued - * up in here, PM(WAKEUP_IND) data needs to be sent and then the skbs - * from waitq can be moved onto the txq. - * Needs locking too. - * @lock: the lock to protect skbs, queues, and ST states. - * @protos_registered: count of the protocols registered, also when 0 the - * chip enable gpio can be toggled, and when it changes to 1 the fw - * needs to be downloaded to initialize chip side ST. - * @ll_state: the various PM states the chip can be, the states are notified - * to us, when the chip sends relevant PM packets(SLEEP_IND, WAKE_IND). - * @kim_data: reference to the parent encapsulating structure. - * - */ -struct st_data_s { - unsigned long st_state; - struct tty_struct *tty; - struct tty_ldisc_ops *ldisc_ops; - struct sk_buff *tx_skb; -#define ST_TX_SENDING 1 -#define ST_TX_WAKEUP 2 - unsigned long tx_state; - struct st_proto_s *list[ST_MAX]; - unsigned long rx_state; - unsigned long rx_count; - struct sk_buff *rx_skb; - struct sk_buff_head txq, tx_waitq; - spinlock_t lock; - unsigned char protos_registered; - unsigned long ll_state; - void *kim_data; -}; - -/** - * st_int_write - - * point this to tty->driver->write or tty->ops->write - * depending upon the kernel version - */ -int st_int_write(struct st_data_s*, const unsigned char*, int); - -/** - * st_write - - * internal write function, passed onto protocol drivers - * via the write function ptr of protocol struct - */ -long st_write(struct sk_buff *); - -/* function to be called from ST-LL */ -void st_ll_send_frame(enum proto_type, struct sk_buff *); - -/* internal wake up function */ -void st_tx_wakeup(struct st_data_s *st_data); - -/* init, exit entry funcs called from KIM */ -int st_core_init(struct st_data_s **); -void st_core_exit(struct st_data_s *); - -/* ask for reference from KIM */ -void st_kim_ref(struct st_data_s **, int); - -#define GPS_STUB_TEST -#ifdef GPS_STUB_TEST -int gps_chrdrv_stub_write(const unsigned char*, int); -void gps_chrdrv_stub_init(void); -#endif - -#endif /*ST_CORE_H */ diff --git a/drivers/staging/ti-st/st_kim.c b/drivers/staging/ti-st/st_kim.c index be18c7a17446..09e2c97562be 100644 --- a/drivers/staging/ti-st/st_kim.c +++ b/drivers/staging/ti-st/st_kim.c @@ -28,15 +28,16 @@ #include <linux/gpio.h> #include <linux/debugfs.h> #include <linux/seq_file.h> - #include <linux/sched.h> +#include <linux/rfkill.h> -#include "st_kim.h" /* understand BT events for fw response */ #include <net/bluetooth/bluetooth.h> #include <net/bluetooth/hci_core.h> #include <net/bluetooth/hci.h> +#include "ti_wilink_st.h" + static int kim_probe(struct platform_device *pdev); static int kim_remove(struct platform_device *pdev); diff --git a/drivers/staging/ti-st/st_kim.h b/drivers/staging/ti-st/st_kim.h deleted file mode 100644 index e09cdf35fdb4..000000000000 --- a/drivers/staging/ti-st/st_kim.h +++ /dev/null @@ -1,180 +0,0 @@ -/* - * Shared Transport Line discipline driver Core - * Init Manager Module header file - * Copyright (C) 2009 Texas Instruments - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - */ - -#ifndef ST_KIM_H -#define ST_KIM_H - -#include <linux/types.h> -#include "st.h" -#include "st_core.h" -#include "st_ll.h" -#include <linux/rfkill.h> - -/* time in msec to wait for - * line discipline to be installed - */ -#define LDISC_TIME 500 -#define CMD_RESP_TIME 500 -#define MAKEWORD(a, b) ((unsigned short)(((unsigned char)(a)) \ - | ((unsigned short)((unsigned char)(b))) << 8)) - -#define GPIO_HIGH 1 -#define GPIO_LOW 0 - -/* the Power-On-Reset logic, requires to attempt - * to download firmware onto chip more than once - * since the self-test for chip takes a while - */ -#define POR_RETRY_COUNT 5 - -/** - * struct chip_version - save the chip version - */ -struct chip_version { - unsigned short full; - unsigned short chip; - unsigned short min_ver; - unsigned short maj_ver; -}; - -/** - * struct kim_data_s - the KIM internal data, embedded as the - * platform's drv data. One for each ST device in the system. - * @uim_pid: KIM needs to communicate with UIM to request to install - * the ldisc by opening UART when protocol drivers register. - * @kim_pdev: the platform device added in one of the board-XX.c file - * in arch/XX/ directory, 1 for each ST device. - * @kim_rcvd: completion handler to notify when data was received, - * mainly used during fw download, which involves multiple send/wait - * for each of the HCI-VS commands. - * @ldisc_installed: completion handler to notify that the UIM accepted - * the request to install ldisc, notify from tty_open which suggests - * the ldisc was properly installed. - * @resp_buffer: data buffer for the .bts fw file name. - * @fw_entry: firmware class struct to request/release the fw. - * @gpios: the list of core/chip enable gpios for BT, FM and GPS cores. - * @rx_state: the rx state for kim's receive func during fw download. - * @rx_count: the rx count for the kim's receive func during fw download. - * @rx_skb: all of fw data might not come at once, and hence data storage for - * whole of the fw response, only HCI_EVENTs and hence diff from ST's - * response. - * @rfkill: rfkill data for each of the cores to be registered with rfkill. - * @rf_protos: proto types of the data registered with rfkill sub-system. - * @core_data: ST core's data, which mainly is the tty's disc_data - * @version: chip version available via a sysfs entry. - * - */ -struct kim_data_s { - long uim_pid; - struct platform_device *kim_pdev; - struct completion kim_rcvd, ldisc_installed; - char resp_buffer[30]; - const struct firmware *fw_entry; - long gpios[ST_MAX]; - unsigned long rx_state; - unsigned long rx_count; - struct sk_buff *rx_skb; - struct rfkill *rfkill[ST_MAX]; - enum proto_type rf_protos[ST_MAX]; - struct st_data_s *core_data; - struct chip_version version; -}; - -/** - * functions called when 1 of the protocol drivers gets - * registered, these need to communicate with UIM to request - * ldisc installed, read chip_version, download relevant fw - */ -long st_kim_start(void *); -long st_kim_stop(void *); - -void st_kim_recv(void *, const unsigned char *, long count); -void st_kim_chip_toggle(enum proto_type, enum kim_gpio_state); -void st_kim_complete(void *); -void kim_st_list_protocols(struct st_data_s *, void *); - -/* - * BTS headers - */ -#define ACTION_SEND_COMMAND 1 -#define ACTION_WAIT_EVENT 2 -#define ACTION_SERIAL 3 -#define ACTION_DELAY 4 -#define ACTION_RUN_SCRIPT 5 -#define ACTION_REMARKS 6 - -/** - * struct bts_header - the fw file is NOT binary which can - * be sent onto TTY as is. The .bts is more a script - * file which has different types of actions. - * Each such action needs to be parsed by the KIM and - * relevant procedure to be called. - */ -struct bts_header { - u32 magic; - u32 version; - u8 future[24]; - u8 actions[0]; -} __attribute__ ((packed)); - -/** - * struct bts_action - Each .bts action has its own type of - * data. - */ -struct bts_action { - u16 type; - u16 size; - u8 data[0]; -} __attribute__ ((packed)); - -struct bts_action_send { - u8 data[0]; -} __attribute__ ((packed)); - -struct bts_action_wait { - u32 msec; - u32 size; - u8 data[0]; -} __attribute__ ((packed)); - -struct bts_action_delay { - u32 msec; -} __attribute__ ((packed)); - -struct bts_action_serial { - u32 baud; - u32 flow_control; -} __attribute__ ((packed)); - -/** - * struct hci_command - the HCI-VS for intrepreting - * the change baud rate of host-side UART, which - * needs to be ignored, since UIM would do that - * when it receives request from KIM for ldisc installation. - */ -struct hci_command { - u8 prefix; - u16 opcode; - u8 plen; - u32 speed; -} __attribute__ ((packed)); - - -#endif /* ST_KIM_H */ diff --git a/drivers/staging/ti-st/st_ll.c b/drivers/staging/ti-st/st_ll.c index 7a1fb6de830d..d08b58e78083 100644 --- a/drivers/staging/ti-st/st_ll.c +++ b/drivers/staging/ti-st/st_ll.c @@ -19,7 +19,9 @@ */ #define pr_fmt(fmt) "(stll) :" fmt -#include "st_ll.h" +#include <linux/skbuff.h> +#include <linux/module.h> +#include "ti_wilink_st.h" /**********************************************************************/ /* internal functions */ diff --git a/drivers/staging/ti-st/st_ll.h b/drivers/staging/ti-st/st_ll.h deleted file mode 100644 index e4dfacd83d90..000000000000 --- a/drivers/staging/ti-st/st_ll.h +++ /dev/null @@ -1,69 +0,0 @@ -/* - * Shared Transport Low Level (ST LL) - * - * Copyright (C) 2009 Texas Instruments - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - */ - -#ifndef ST_LL_H -#define ST_LL_H - -#include <linux/skbuff.h> -#include "st.h" -#include "st_core.h" - -/* ST LL receiver states */ -#define ST_W4_PACKET_TYPE 0 -#define ST_BT_W4_EVENT_HDR 1 -#define ST_BT_W4_ACL_HDR 2 -#define ST_BT_W4_SCO_HDR 3 -#define ST_BT_W4_DATA 4 -#define ST_FM_W4_EVENT_HDR 5 -#define ST_GPS_W4_EVENT_HDR 6 - -/* ST LL state machines */ -#define ST_LL_ASLEEP 0 -#define ST_LL_ASLEEP_TO_AWAKE 1 -#define ST_LL_AWAKE 2 -#define ST_LL_AWAKE_TO_ASLEEP 3 -#define ST_LL_INVALID 4 - -/* different PM notifications coming from chip */ -#define LL_SLEEP_IND 0x30 -#define LL_SLEEP_ACK 0x31 -#define LL_WAKE_UP_IND 0x32 -#define LL_WAKE_UP_ACK 0x33 - -/* initialize and de-init ST LL */ -long st_ll_init(struct st_data_s *); -long st_ll_deinit(struct st_data_s *); - -/** - * enable/disable ST LL along with KIM start/stop - * called by ST Core - */ -void st_ll_enable(struct st_data_s *); -void st_ll_disable(struct st_data_s *); - -/** - * various funcs used by ST core to set/get the various PM states - * of the chip. - */ -unsigned long st_ll_getstate(struct st_data_s *); -unsigned long st_ll_sleep_state(struct st_data_s *, unsigned char); -void st_ll_wakeup(struct st_data_s *); - -#endif /* ST_LL_H */ diff --git a/drivers/staging/ti-st/ti_wilink_st.h b/drivers/staging/ti-st/ti_wilink_st.h new file mode 100644 index 000000000000..537efce96d58 --- /dev/null +++ b/drivers/staging/ti-st/ti_wilink_st.h @@ -0,0 +1,409 @@ +/* + * Shared Transport Header file + * To be included by the protocol stack drivers for + * Texas Instruments BT,FM and GPS combo chip drivers + * and also serves the sub-modules of the shared transport driver. + * + * Copyright (C) 2009-2010 Texas Instruments + * Author: Pavan Savoy <pavan_savoy@ti.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#ifndef TI_WILINK_ST_H +#define TI_WILINK_ST_H + +/* TODO: + * Move the following to tty.h upon acceptance + */ +#define N_TI_WL 22 /* Ldisc for TI's WL BT, FM, GPS combo chips */ + +#ifdef __KERNEL__ +/** + * enum kim_gpio_state - Few protocols such as FM have ACTIVE LOW + * gpio states for their chip/core enable gpios + */ +enum kim_gpio_state { + KIM_GPIO_INACTIVE, + KIM_GPIO_ACTIVE, +}; + +/** + * enum proto-type - The protocol on WiLink chips which share a + * common physical interface like UART. + */ +enum proto_type { + ST_BT, + ST_FM, + ST_GPS, + ST_MAX, +}; + +/** + * struct st_proto_s - Per Protocol structure from BT/FM/GPS to ST + * @type: type of the protocol being registered among the + * available proto_type(BT, FM, GPS the protocol which share TTY). + * @recv: the receiver callback pointing to a function in the + * protocol drivers called by the ST driver upon receiving + * relevant data. + * @match_packet: reserved for future use, to make ST more generic + * @reg_complete_cb: callback handler pointing to a function in protocol + * handler called by ST when the pending registrations are complete. + * The registrations are marked pending, in situations when fw + * download is in progress. + * @write: pointer to function in ST provided to protocol drivers from ST, + * to be made use when protocol drivers have data to send to TTY. + * @priv_data: privdate data holder for the protocol drivers, sent + * from the protocol drivers during registration, and sent back on + * reg_complete_cb and recv. + */ +struct st_proto_s { + enum proto_type type; + long (*recv) (void *, struct sk_buff *); + unsigned char (*match_packet) (const unsigned char *data); + void (*reg_complete_cb) (void *, char data); + long (*write) (struct sk_buff *skb); + void *priv_data; +}; + +extern long st_register(struct st_proto_s *); +extern long st_unregister(enum proto_type); + + +/* + * header information used by st_core.c + */ + +/* states of protocol list */ +#define ST_NOTEMPTY 1 +#define ST_EMPTY 0 + +/* + * possible st_states + */ +#define ST_INITIALIZING 1 +#define ST_REG_IN_PROGRESS 2 +#define ST_REG_PENDING 3 +#define ST_WAITING_FOR_RESP 4 + +/** + * struct st_data_s - ST core internal structure + * @st_state: different states of ST like initializing, registration + * in progress, this is mainly used to return relevant err codes + * when protocol drivers are registering. It is also used to track + * the recv function, as in during fw download only HCI events + * can occur , where as during other times other events CH8, CH9 + * can occur. + * @tty: tty provided by the TTY core for line disciplines. + * @ldisc_ops: the procedures that this line discipline registers with TTY. + * @tx_skb: If for some reason the tty's write returns lesser bytes written + * then to maintain the rest of data to be written on next instance. + * This needs to be protected, hence the lock inside wakeup func. + * @tx_state: if the data is being written onto the TTY and protocol driver + * wants to send more, queue up data and mark that there is + * more data to send. + * @list: the list of protocols registered, only MAX can exist, one protocol + * can register only once. + * @rx_state: states to be maintained inside st's tty receive + * @rx_count: count to be maintained inside st's tty receieve + * @rx_skb: the skb where all data for a protocol gets accumulated, + * since tty might not call receive when a complete event packet + * is received, the states, count and the skb needs to be maintained. + * @txq: the list of skbs which needs to be sent onto the TTY. + * @tx_waitq: if the chip is not in AWAKE state, the skbs needs to be queued + * up in here, PM(WAKEUP_IND) data needs to be sent and then the skbs + * from waitq can be moved onto the txq. + * Needs locking too. + * @lock: the lock to protect skbs, queues, and ST states. + * @protos_registered: count of the protocols registered, also when 0 the + * chip enable gpio can be toggled, and when it changes to 1 the fw + * needs to be downloaded to initialize chip side ST. + * @ll_state: the various PM states the chip can be, the states are notified + * to us, when the chip sends relevant PM packets(SLEEP_IND, WAKE_IND). + * @kim_data: reference to the parent encapsulating structure. + * + */ +struct st_data_s { + unsigned long st_state; + struct tty_struct *tty; + struct tty_ldisc_ops *ldisc_ops; + struct sk_buff *tx_skb; +#define ST_TX_SENDING 1 +#define ST_TX_WAKEUP 2 + unsigned long tx_state; + struct st_proto_s *list[ST_MAX]; + unsigned long rx_state; + unsigned long rx_count; + struct sk_buff *rx_skb; + struct sk_buff_head txq, tx_waitq; + spinlock_t lock; + unsigned char protos_registered; + unsigned long ll_state; + void *kim_data; +}; + +/** + * st_int_write - + * point this to tty->driver->write or tty->ops->write + * depending upon the kernel version + */ +int st_int_write(struct st_data_s*, const unsigned char*, int); + +/** + * st_write - + * internal write function, passed onto protocol drivers + * via the write function ptr of protocol struct + */ +long st_write(struct sk_buff *); + +/* function to be called from ST-LL */ +void st_ll_send_frame(enum proto_type, struct sk_buff *); + +/* internal wake up function */ +void st_tx_wakeup(struct st_data_s *st_data); + +/* init, exit entry funcs called from KIM */ +int st_core_init(struct st_data_s **); +void st_core_exit(struct st_data_s *); + +/* ask for reference from KIM */ +void st_kim_ref(struct st_data_s **, int); + +#define GPS_STUB_TEST +#ifdef GPS_STUB_TEST +int gps_chrdrv_stub_write(const unsigned char*, int); +void gps_chrdrv_stub_init(void); +#endif + +/* + * header information used by st_kim.c + */ + +/* time in msec to wait for + * line discipline to be installed + */ +#define LDISC_TIME 500 +#define CMD_RESP_TIME 500 +#define MAKEWORD(a, b) ((unsigned short)(((unsigned char)(a)) \ + | ((unsigned short)((unsigned char)(b))) << 8)) + +#define GPIO_HIGH 1 +#define GPIO_LOW 0 + +/* the Power-On-Reset logic, requires to attempt + * to download firmware onto chip more than once + * since the self-test for chip takes a while + */ +#define POR_RETRY_COUNT 5 + +/** + * struct chip_version - save the chip version + */ +struct chip_version { + unsigned short full; + unsigned short chip; + unsigned short min_ver; + unsigned short maj_ver; +}; + +/** + * struct kim_data_s - the KIM internal data, embedded as the + * platform's drv data. One for each ST device in the system. + * @uim_pid: KIM needs to communicate with UIM to request to install + * the ldisc by opening UART when protocol drivers register. + * @kim_pdev: the platform device added in one of the board-XX.c file + * in arch/XX/ directory, 1 for each ST device. + * @kim_rcvd: completion handler to notify when data was received, + * mainly used during fw download, which involves multiple send/wait + * for each of the HCI-VS commands. + * @ldisc_installed: completion handler to notify that the UIM accepted + * the request to install ldisc, notify from tty_open which suggests + * the ldisc was properly installed. + * @resp_buffer: data buffer for the .bts fw file name. + * @fw_entry: firmware class struct to request/release the fw. + * @gpios: the list of core/chip enable gpios for BT, FM and GPS cores. + * @rx_state: the rx state for kim's receive func during fw download. + * @rx_count: the rx count for the kim's receive func during fw download. + * @rx_skb: all of fw data might not come at once, and hence data storage for + * whole of the fw response, only HCI_EVENTs and hence diff from ST's + * response. + * @rfkill: rfkill data for each of the cores to be registered with rfkill. + * @rf_protos: proto types of the data registered with rfkill sub-system. + * @core_data: ST core's data, which mainly is the tty's disc_data + * @version: chip version available via a sysfs entry. + * + */ +struct kim_data_s { + long uim_pid; + struct platform_device *kim_pdev; + struct completion kim_rcvd, ldisc_installed; + char resp_buffer[30]; + const struct firmware *fw_entry; + long gpios[ST_MAX]; + unsigned long rx_state; + unsigned long rx_count; + struct sk_buff *rx_skb; + struct rfkill *rfkill[ST_MAX]; + enum proto_type rf_protos[ST_MAX]; + struct st_data_s *core_data; + struct chip_version version; +}; + +/** + * functions called when 1 of the protocol drivers gets + * registered, these need to communicate with UIM to request + * ldisc installed, read chip_version, download relevant fw + */ +long st_kim_start(void *); +long st_kim_stop(void *); + +void st_kim_recv(void *, const unsigned char *, long count); +void st_kim_chip_toggle(enum proto_type, enum kim_gpio_state); +void st_kim_complete(void *); +void kim_st_list_protocols(struct st_data_s *, void *); + +/* + * BTS headers + */ +#define ACTION_SEND_COMMAND 1 +#define ACTION_WAIT_EVENT 2 +#define ACTION_SERIAL 3 +#define ACTION_DELAY 4 +#define ACTION_RUN_SCRIPT 5 +#define ACTION_REMARKS 6 + +/** + * struct bts_header - the fw file is NOT binary which can + * be sent onto TTY as is. The .bts is more a script + * file which has different types of actions. + * Each such action needs to be parsed by the KIM and + * relevant procedure to be called. + */ +struct bts_header { + u32 magic; + u32 version; + u8 future[24]; + u8 actions[0]; +} __attribute__ ((packed)); + +/** + * struct bts_action - Each .bts action has its own type of + * data. + */ +struct bts_action { + u16 type; + u16 size; + u8 data[0]; +} __attribute__ ((packed)); + +struct bts_action_send { + u8 data[0]; +} __attribute__ ((packed)); + +struct bts_action_wait { + u32 msec; + u32 size; + u8 data[0]; +} __attribute__ ((packed)); + +struct bts_action_delay { + u32 msec; +} __attribute__ ((packed)); + +struct bts_action_serial { + u32 baud; + u32 flow_control; +} __attribute__ ((packed)); + +/** + * struct hci_command - the HCI-VS for intrepreting + * the change baud rate of host-side UART, which + * needs to be ignored, since UIM would do that + * when it receives request from KIM for ldisc installation. + */ +struct hci_command { + u8 prefix; + u16 opcode; + u8 plen; + u32 speed; +} __attribute__ ((packed)); + +/* + * header information used by st_ll.c + */ + +/* ST LL receiver states */ +#define ST_W4_PACKET_TYPE 0 +#define ST_BT_W4_EVENT_HDR 1 +#define ST_BT_W4_ACL_HDR 2 +#define ST_BT_W4_SCO_HDR 3 +#define ST_BT_W4_DATA 4 +#define ST_FM_W4_EVENT_HDR 5 +#define ST_GPS_W4_EVENT_HDR 6 + +/* ST LL state machines */ +#define ST_LL_ASLEEP 0 +#define ST_LL_ASLEEP_TO_AWAKE 1 +#define ST_LL_AWAKE 2 +#define ST_LL_AWAKE_TO_ASLEEP 3 +#define ST_LL_INVALID 4 + +/* different PM notifications coming from chip */ +#define LL_SLEEP_IND 0x30 +#define LL_SLEEP_ACK 0x31 +#define LL_WAKE_UP_IND 0x32 +#define LL_WAKE_UP_ACK 0x33 + +/* initialize and de-init ST LL */ +long st_ll_init(struct st_data_s *); +long st_ll_deinit(struct st_data_s *); + +/** + * enable/disable ST LL along with KIM start/stop + * called by ST Core + */ +void st_ll_enable(struct st_data_s *); +void st_ll_disable(struct st_data_s *); + +/** + * various funcs used by ST core to set/get the various PM states + * of the chip. + */ +unsigned long st_ll_getstate(struct st_data_s *); +unsigned long st_ll_sleep_state(struct st_data_s *, unsigned char); +void st_ll_wakeup(struct st_data_s *); + +/* + * header information used by st_core.c for FM and GPS + * packet parsing, the bluetooth headers are already available + * at net/bluetooth/ + */ + +struct fm_event_hdr { + u8 plen; +} __attribute__ ((packed)); + +#define FM_MAX_FRAME_SIZE 0xFF /* TODO: */ +#define FM_EVENT_HDR_SIZE 1 /* size of fm_event_hdr */ +#define ST_FM_CH8_PKT 0x8 + +/* gps stuff */ +struct gps_event_hdr { + u8 opcode; + u16 plen; +} __attribute__ ((packed)); + +#endif /* __KERNEL__ */ +#endif /* TI_WILINK_ST_H */ |