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Subject[PATCH 14/14] misc: ti-st: Drop superseded driver
Date
From: Sebastian Reichel <sebastian.reichel@collabora.com>

This driver has been superseded by the serdev based Bluetooth
hci_ll driver, which is initialized from DT. All mainline users
have been converted and this driver can be safely dropped.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
---
drivers/misc/Kconfig | 1 -
drivers/misc/Makefile | 1 -
drivers/misc/ti-st/Kconfig | 18 -
drivers/misc/ti-st/Makefile | 6 -
drivers/misc/ti-st/st_core.c | 922 -----------------------------------
drivers/misc/ti-st/st_kim.c | 868 ---------------------------------
drivers/misc/ti-st/st_ll.c | 169 -------
include/linux/ti_wilink_st.h | 335 -------------
8 files changed, 2320 deletions(-)
delete mode 100644 drivers/misc/ti-st/Kconfig
delete mode 100644 drivers/misc/ti-st/Makefile
delete mode 100644 drivers/misc/ti-st/st_core.c
delete mode 100644 drivers/misc/ti-st/st_kim.c
delete mode 100644 drivers/misc/ti-st/st_ll.c

diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 3726eacdf65d..a5cc07d33c74 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -516,7 +516,6 @@ config MISC_RTSX
source "drivers/misc/c2port/Kconfig"
source "drivers/misc/eeprom/Kconfig"
source "drivers/misc/cb710/Kconfig"
-source "drivers/misc/ti-st/Kconfig"
source "drivers/misc/lis3lv02d/Kconfig"
source "drivers/misc/altera-stapl/Kconfig"
source "drivers/misc/mei/Kconfig"
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index af22bbc3d00c..31c1e3eb4952 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -39,7 +39,6 @@ obj-y += cb710/
obj-$(CONFIG_SPEAR13XX_PCIE_GADGET) += spear13xx_pcie_gadget.o
obj-$(CONFIG_VMWARE_BALLOON) += vmw_balloon.o
obj-$(CONFIG_PCH_PHUB) += pch_phub.o
-obj-y += ti-st/
obj-y += lis3lv02d/
obj-$(CONFIG_USB_SWITCH_FSA9480) += fsa9480.o
obj-$(CONFIG_ALTERA_STAPL) +=altera-stapl/
diff --git a/drivers/misc/ti-st/Kconfig b/drivers/misc/ti-st/Kconfig
deleted file mode 100644
index 5bb92698bc80..000000000000
--- a/drivers/misc/ti-st/Kconfig
+++ /dev/null
@@ -1,18 +0,0 @@
-#
-# TI's shared transport line discipline and the protocol
-# drivers (BT, FM and GPS)
-#
-menu "Texas Instruments shared transport line discipline"
-config TI_ST
- tristate "Shared transport core driver"
- depends on NET && TTY
- depends on GPIOLIB || COMPILE_TEST
- select FW_LOADER
- help
- This enables the shared transport core driver for TI
- BT / FM and GPS combo chips. This enables protocol drivers
- to register themselves with core and send data, the responses
- are returned to relevant protocol drivers based on their
- packet types.
-
-endmenu
diff --git a/drivers/misc/ti-st/Makefile b/drivers/misc/ti-st/Makefile
deleted file mode 100644
index 78d7ebb14749..000000000000
--- a/drivers/misc/ti-st/Makefile
+++ /dev/null
@@ -1,6 +0,0 @@
-#
-# Makefile for TI's shared transport line discipline
-# and its protocol drivers (BT, FM, GPS)
-#
-obj-$(CONFIG_TI_ST) += st_drv.o
-st_drv-objs := st_core.o st_kim.o st_ll.o
diff --git a/drivers/misc/ti-st/st_core.c b/drivers/misc/ti-st/st_core.c
deleted file mode 100644
index eda8d407be28..000000000000
--- a/drivers/misc/ti-st/st_core.c
+++ /dev/null
@@ -1,922 +0,0 @@
-/*
- * Shared Transport Line discipline driver Core
- * This hooks up ST KIM driver and ST LL 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
- *
- */
-
-#define pr_fmt(fmt) "(stc): " fmt
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/tty.h>
-
-#include <linux/seq_file.h>
-#include <linux/skbuff.h>
-
-#include <linux/ti_wilink_st.h>
-
-extern void st_kim_recv(void *, const unsigned char *, long);
-void st_int_recv(void *, const unsigned char *, long);
-/* function pointer pointing to either,
- * st_kim_recv during registration to receive fw download responses
- * st_int_recv after registration to receive proto stack responses
- */
-static void (*st_recv) (void *, const unsigned char *, long);
-
-/********************************************************************/
-static void add_channel_to_table(struct st_data_s *st_gdata,
- struct st_proto_s *new_proto)
-{
- pr_info("%s: id %d\n", __func__, new_proto->chnl_id);
- /* list now has the channel id as index itself */
- st_gdata->list[new_proto->chnl_id] = new_proto;
- st_gdata->is_registered[new_proto->chnl_id] = true;
-}
-
-static void remove_channel_from_table(struct st_data_s *st_gdata,
- struct st_proto_s *proto)
-{
- pr_info("%s: id %d\n", __func__, proto->chnl_id);
-/* st_gdata->list[proto->chnl_id] = NULL; */
- st_gdata->is_registered[proto->chnl_id] = false;
-}
-
-/*
- * called from KIM during firmware download.
- *
- * This is a wrapper function to tty->ops->write_room.
- * It returns number of free space available in
- * uart tx buffer.
- */
-int st_get_uart_wr_room(struct st_data_s *st_gdata)
-{
- struct tty_struct *tty;
- if (unlikely(st_gdata == NULL || st_gdata->tty == NULL)) {
- pr_err("tty unavailable to perform write");
- return -1;
- }
- tty = st_gdata->tty;
- return tty->ops->write_room(tty);
-}
-
-/* can be called in from
- * -- KIM (during fw download)
- * -- ST Core (during st_write)
- *
- * This is the internal write function - a wrapper
- * to tty->ops->write
- */
-int st_int_write(struct st_data_s *st_gdata,
- const unsigned char *data, int count)
-{
- struct tty_struct *tty;
- if (unlikely(st_gdata == NULL || st_gdata->tty == NULL)) {
- pr_err("tty unavailable to perform write");
- return -EINVAL;
- }
- tty = st_gdata->tty;
-#ifdef VERBOSE
- print_hex_dump(KERN_DEBUG, "<out<", DUMP_PREFIX_NONE,
- 16, 1, data, count, 0);
-#endif
- return tty->ops->write(tty, data, count);
-
-}
-
-/*
- * push the skb received to relevant
- * protocol stacks
- */
-static void st_send_frame(unsigned char chnl_id, struct st_data_s *st_gdata)
-{
- pr_debug(" %s(prot:%d) ", __func__, chnl_id);
-
- if (unlikely
- (st_gdata == NULL || st_gdata->rx_skb == NULL
- || st_gdata->is_registered[chnl_id] == false)) {
- pr_err("chnl_id %d not registered, no data to send?",
- chnl_id);
- kfree_skb(st_gdata->rx_skb);
- return;
- }
- /* this cannot fail
- * this shouldn't take long
- * - should be just skb_queue_tail for the
- * protocol stack driver
- */
- if (likely(st_gdata->list[chnl_id]->recv != NULL)) {
- if (unlikely
- (st_gdata->list[chnl_id]->recv
- (st_gdata->list[chnl_id]->priv_data, st_gdata->rx_skb)
- != 0)) {
- pr_err(" proto stack %d's ->recv failed", chnl_id);
- kfree_skb(st_gdata->rx_skb);
- return;
- }
- } else {
- pr_err(" proto stack %d's ->recv null", chnl_id);
- kfree_skb(st_gdata->rx_skb);
- }
- return;
-}
-
-/**
- * st_reg_complete -
- * to call registration complete callbacks
- * of all protocol stack drivers
- * This function is being called with spin lock held, protocol drivers are
- * only expected to complete their waits and do nothing more than that.
- */
-static void st_reg_complete(struct st_data_s *st_gdata, int err)
-{
- unsigned char i = 0;
- pr_info(" %s ", __func__);
- for (i = 0; i < ST_MAX_CHANNELS; i++) {
- if (likely(st_gdata != NULL &&
- st_gdata->is_registered[i] == true &&
- st_gdata->list[i]->reg_complete_cb != NULL)) {
- st_gdata->list[i]->reg_complete_cb
- (st_gdata->list[i]->priv_data, err);
- pr_info("protocol %d's cb sent %d\n", i, err);
- if (err) { /* cleanup registered protocol */
- st_gdata->is_registered[i] = false;
- if (st_gdata->protos_registered)
- st_gdata->protos_registered--;
- }
- }
- }
-}
-
-static inline int st_check_data_len(struct st_data_s *st_gdata,
- unsigned char chnl_id, int len)
-{
- int room = skb_tailroom(st_gdata->rx_skb);
-
- pr_debug("len %d room %d", len, room);
-
- if (!len) {
- /* Received packet has only packet header and
- * has zero length payload. So, ask ST CORE to
- * forward the packet to protocol driver (BT/FM/GPS)
- */
- st_send_frame(chnl_id, st_gdata);
-
- } else if (len > room) {
- /* Received packet's payload length is larger.
- * We can't accommodate it in created skb.
- */
- pr_err("Data length is too large len %d room %d", len,
- room);
- kfree_skb(st_gdata->rx_skb);
- } else {
- /* Packet header has non-zero payload length and
- * we have enough space in created skb. Lets read
- * payload data */
- st_gdata->rx_state = ST_W4_DATA;
- st_gdata->rx_count = len;
- return len;
- }
-
- /* Change ST state to continue to process next
- * packet */
- st_gdata->rx_state = ST_W4_PACKET_TYPE;
- st_gdata->rx_skb = NULL;
- st_gdata->rx_count = 0;
- st_gdata->rx_chnl = 0;
-
- return 0;
-}
-
-/**
- * st_wakeup_ack - internal function for action when wake-up ack
- * received
- */
-static inline void st_wakeup_ack(struct st_data_s *st_gdata,
- unsigned char cmd)
-{
- struct sk_buff *waiting_skb;
- unsigned long flags = 0;
-
- spin_lock_irqsave(&st_gdata->lock, flags);
- /* de-Q from waitQ and Q in txQ now that the
- * chip is awake
- */
- while ((waiting_skb = skb_dequeue(&st_gdata->tx_waitq)))
- skb_queue_tail(&st_gdata->txq, waiting_skb);
-
- /* state forwarded to ST LL */
- st_ll_sleep_state(st_gdata, (unsigned long)cmd);
- spin_unlock_irqrestore(&st_gdata->lock, flags);
-
- /* wake up to send the recently copied skbs from waitQ */
- st_tx_wakeup(st_gdata);
-}
-
-/**
- * st_int_recv - ST's internal receive function.
- * Decodes received RAW data and forwards to corresponding
- * client drivers (Bluetooth,FM,GPS..etc).
- * This can receive various types of packets,
- * HCI-Events, ACL, SCO, 4 types of HCI-LL PM packets
- * CH-8 packets from FM, CH-9 packets from GPS cores.
- */
-void st_int_recv(void *disc_data,
- const unsigned char *data, long count)
-{
- char *ptr;
- struct st_proto_s *proto;
- unsigned short payload_len = 0;
- int len = 0;
- unsigned char type = 0;
- unsigned char *plen;
- struct st_data_s *st_gdata = (struct st_data_s *)disc_data;
- unsigned long flags;
-
- ptr = (char *)data;
- /* tty_receive sent null ? */
- if (unlikely(ptr == NULL) || (st_gdata == NULL)) {
- pr_err(" received null from TTY ");
- return;
- }
-
- pr_debug("count %ld rx_state %ld"
- "rx_count %ld", count, st_gdata->rx_state,
- st_gdata->rx_count);
-
- spin_lock_irqsave(&st_gdata->lock, flags);
- /* Decode received bytes here */
- while (count) {
- if (st_gdata->rx_count) {
- len = min_t(unsigned int, st_gdata->rx_count, count);
- skb_put_data(st_gdata->rx_skb, ptr, len);
- st_gdata->rx_count -= len;
- count -= len;
- ptr += len;
-
- if (st_gdata->rx_count)
- continue;
-
- /* Check ST RX state machine , where are we? */
- switch (st_gdata->rx_state) {
- /* Waiting for complete packet ? */
- case ST_W4_DATA:
- pr_debug("Complete pkt received");
- /* Ask ST CORE to forward
- * the packet to protocol driver */
- st_send_frame(st_gdata->rx_chnl, st_gdata);
-
- st_gdata->rx_state = ST_W4_PACKET_TYPE;
- st_gdata->rx_skb = NULL;
- continue;
- /* parse the header to know details */
- case ST_W4_HEADER:
- proto = st_gdata->list[st_gdata->rx_chnl];
- plen =
- &st_gdata->rx_skb->data
- [proto->offset_len_in_hdr];
- pr_debug("plen pointing to %x\n", *plen);
- if (proto->len_size == 1)/* 1 byte len field */
- payload_len = *(unsigned char *)plen;
- else if (proto->len_size == 2)
- payload_len =
- __le16_to_cpu(*(unsigned short *)plen);
- else
- pr_info("%s: invalid length "
- "for id %d\n",
- __func__, proto->chnl_id);
- st_check_data_len(st_gdata, proto->chnl_id,
- payload_len);
- pr_debug("off %d, pay len %d\n",
- proto->offset_len_in_hdr, payload_len);
- continue;
- } /* end of switch rx_state */
- }
-
- /* end of if rx_count */
- /* Check first byte of packet and identify module
- * owner (BT/FM/GPS) */
- switch (*ptr) {
- case LL_SLEEP_IND:
- case LL_SLEEP_ACK:
- case LL_WAKE_UP_IND:
- pr_debug("PM packet");
- /* this takes appropriate action based on
- * sleep state received --
- */
- st_ll_sleep_state(st_gdata, *ptr);
- /* if WAKEUP_IND collides copy from waitq to txq
- * and assume chip awake
- */
- spin_unlock_irqrestore(&st_gdata->lock, flags);
- if (st_ll_getstate(st_gdata) == ST_LL_AWAKE)
- st_wakeup_ack(st_gdata, LL_WAKE_UP_ACK);
- spin_lock_irqsave(&st_gdata->lock, flags);
-
- ptr++;
- count--;
- continue;
- case LL_WAKE_UP_ACK:
- pr_debug("PM packet");
-
- spin_unlock_irqrestore(&st_gdata->lock, flags);
- /* wake up ack received */
- st_wakeup_ack(st_gdata, *ptr);
- spin_lock_irqsave(&st_gdata->lock, flags);
-
- ptr++;
- count--;
- continue;
- /* Unknow packet? */
- default:
- type = *ptr;
-
- /* Default case means non-HCILL packets,
- * possibilities are packets for:
- * (a) valid protocol - Supported Protocols within
- * the ST_MAX_CHANNELS.
- * (b) registered protocol - Checked by
- * "st_gdata->list[type] == NULL)" are supported
- * protocols only.
- * Rules out any invalid protocol and
- * unregistered protocols with channel ID < 16.
- */
-
- if ((type >= ST_MAX_CHANNELS) ||
- (st_gdata->list[type] == NULL)) {
- pr_err("chip/interface misbehavior: "
- "dropping frame starting "
- "with 0x%02x\n", type);
- goto done;
- }
-
- st_gdata->rx_skb = alloc_skb(
- st_gdata->list[type]->max_frame_size,
- GFP_ATOMIC);
- if (st_gdata->rx_skb == NULL) {
- pr_err("out of memory: dropping\n");
- goto done;
- }
-
- skb_reserve(st_gdata->rx_skb,
- st_gdata->list[type]->reserve);
- /* next 2 required for BT only */
- st_gdata->rx_skb->cb[0] = type; /*pkt_type*/
- st_gdata->rx_skb->cb[1] = 0; /*incoming*/
- st_gdata->rx_chnl = *ptr;
- st_gdata->rx_state = ST_W4_HEADER;
- st_gdata->rx_count = st_gdata->list[type]->hdr_len;
- pr_debug("rx_count %ld\n", st_gdata->rx_count);
- };
- ptr++;
- count--;
- }
-done:
- spin_unlock_irqrestore(&st_gdata->lock, flags);
- pr_debug("done %s", __func__);
- return;
-}
-
-/**
- * st_int_dequeue - internal de-Q function.
- * If the previous data set was not written
- * completely, return that skb which has the pending data.
- * In normal cases, return top of txq.
- */
-static struct sk_buff *st_int_dequeue(struct st_data_s *st_gdata)
-{
- struct sk_buff *returning_skb;
-
- pr_debug("%s", __func__);
- if (st_gdata->tx_skb != NULL) {
- returning_skb = st_gdata->tx_skb;
- st_gdata->tx_skb = NULL;
- return returning_skb;
- }
- return skb_dequeue(&st_gdata->txq);
-}
-
-/**
- * st_int_enqueue - internal Q-ing function.
- * Will either Q the skb to txq or the tx_waitq
- * depending on the ST LL state.
- * If the chip is asleep, then Q it onto waitq and
- * wakeup the chip.
- * txq and waitq needs protection since the other contexts
- * may be sending data, waking up chip.
- */
-static void st_int_enqueue(struct st_data_s *st_gdata, struct sk_buff *skb)
-{
- unsigned long flags = 0;
-
- pr_debug("%s", __func__);
- spin_lock_irqsave(&st_gdata->lock, flags);
-
- switch (st_ll_getstate(st_gdata)) {
- case ST_LL_AWAKE:
- pr_debug("ST LL is AWAKE, sending normally");
- skb_queue_tail(&st_gdata->txq, skb);
- break;
- case ST_LL_ASLEEP_TO_AWAKE:
- skb_queue_tail(&st_gdata->tx_waitq, skb);
- break;
- case ST_LL_AWAKE_TO_ASLEEP:
- pr_err("ST LL is illegal state(%ld),"
- "purging received skb.", st_ll_getstate(st_gdata));
- kfree_skb(skb);
- break;
- case ST_LL_ASLEEP:
- skb_queue_tail(&st_gdata->tx_waitq, skb);
- st_ll_wakeup(st_gdata);
- break;
- default:
- pr_err("ST LL is illegal state(%ld),"
- "purging received skb.", st_ll_getstate(st_gdata));
- kfree_skb(skb);
- break;
- }
-
- spin_unlock_irqrestore(&st_gdata->lock, flags);
- pr_debug("done %s", __func__);
- return;
-}
-
-/*
- * internal wakeup function
- * called from either
- * - TTY layer when write's finished
- * - st_write (in context of the protocol stack)
- */
-static void work_fn_write_wakeup(struct work_struct *work)
-{
- struct st_data_s *st_gdata = container_of(work, struct st_data_s,
- work_write_wakeup);
-
- st_tx_wakeup((void *)st_gdata);
-}
-void st_tx_wakeup(struct st_data_s *st_data)
-{
- struct sk_buff *skb;
- unsigned long flags; /* for irq save flags */
- pr_debug("%s", __func__);
- /* check for sending & set flag sending here */
- if (test_and_set_bit(ST_TX_SENDING, &st_data->tx_state)) {
- pr_debug("ST already sending");
- /* keep sending */
- set_bit(ST_TX_WAKEUP, &st_data->tx_state);
- return;
- /* TX_WAKEUP will be checked in another
- * context
- */
- }
- do { /* come back if st_tx_wakeup is set */
- /* woke-up to write */
- clear_bit(ST_TX_WAKEUP, &st_data->tx_state);
- while ((skb = st_int_dequeue(st_data))) {
- int len;
- spin_lock_irqsave(&st_data->lock, flags);
- /* enable wake-up from TTY */
- set_bit(TTY_DO_WRITE_WAKEUP, &st_data->tty->flags);
- len = st_int_write(st_data, skb->data, skb->len);
- skb_pull(skb, len);
- /* if skb->len = len as expected, skb->len=0 */
- if (skb->len) {
- /* would be the next skb to be sent */
- st_data->tx_skb = skb;
- spin_unlock_irqrestore(&st_data->lock, flags);
- break;
- }
- kfree_skb(skb);
- spin_unlock_irqrestore(&st_data->lock, flags);
- }
- /* if wake-up is set in another context- restart sending */
- } while (test_bit(ST_TX_WAKEUP, &st_data->tx_state));
-
- /* clear flag sending */
- clear_bit(ST_TX_SENDING, &st_data->tx_state);
-}
-
-/********************************************************************/
-/* functions called from ST KIM
-*/
-void kim_st_list_protocols(struct st_data_s *st_gdata, void *buf)
-{
- seq_printf(buf, "[%d]\nBT=%c\nFM=%c\nGPS=%c\n",
- st_gdata->protos_registered,
- st_gdata->is_registered[0x04] == true ? 'R' : 'U',
- st_gdata->is_registered[0x08] == true ? 'R' : 'U',
- st_gdata->is_registered[0x09] == true ? 'R' : 'U');
-}
-
-/********************************************************************/
-/*
- * functions called from protocol stack drivers
- * to be EXPORT-ed
- */
-long st_register(struct st_proto_s *new_proto)
-{
- struct st_data_s *st_gdata;
- long err = 0;
- unsigned long flags = 0;
-
- st_kim_ref(&st_gdata, 0);
- if (st_gdata == NULL || new_proto == NULL || new_proto->recv == NULL
- || new_proto->reg_complete_cb == NULL) {
- pr_err("gdata/new_proto/recv or reg_complete_cb not ready");
- return -EINVAL;
- }
-
- if (new_proto->chnl_id >= ST_MAX_CHANNELS) {
- pr_err("chnl_id %d not supported", new_proto->chnl_id);
- return -EPROTONOSUPPORT;
- }
-
- if (st_gdata->is_registered[new_proto->chnl_id] == true) {
- pr_err("chnl_id %d already registered", new_proto->chnl_id);
- return -EALREADY;
- }
-
- /* can be from process context only */
- spin_lock_irqsave(&st_gdata->lock, flags);
-
- if (test_bit(ST_REG_IN_PROGRESS, &st_gdata->st_state)) {
- pr_info(" ST_REG_IN_PROGRESS:%d ", new_proto->chnl_id);
- /* fw download in progress */
-
- add_channel_to_table(st_gdata, new_proto);
- st_gdata->protos_registered++;
- new_proto->write = st_write;
-
- set_bit(ST_REG_PENDING, &st_gdata->st_state);
- spin_unlock_irqrestore(&st_gdata->lock, flags);
- return -EINPROGRESS;
- } else if (st_gdata->protos_registered == ST_EMPTY) {
- pr_info(" chnl_id list empty :%d ", new_proto->chnl_id);
- set_bit(ST_REG_IN_PROGRESS, &st_gdata->st_state);
- st_recv = st_kim_recv;
-
- /* enable the ST LL - to set default chip state */
- st_ll_enable(st_gdata);
-
- /* release lock previously held - re-locked below */
- spin_unlock_irqrestore(&st_gdata->lock, flags);
-
- /* this may take a while to complete
- * since it involves BT fw download
- */
- err = st_kim_start(st_gdata->kim_data);
- if (err != 0) {
- clear_bit(ST_REG_IN_PROGRESS, &st_gdata->st_state);
- if ((st_gdata->protos_registered != ST_EMPTY) &&
- (test_bit(ST_REG_PENDING, &st_gdata->st_state))) {
- pr_err(" KIM failure complete callback ");
- spin_lock_irqsave(&st_gdata->lock, flags);
- st_reg_complete(st_gdata, err);
- spin_unlock_irqrestore(&st_gdata->lock, flags);
- clear_bit(ST_REG_PENDING, &st_gdata->st_state);
- }
- return -EINVAL;
- }
-
- spin_lock_irqsave(&st_gdata->lock, flags);
-
- clear_bit(ST_REG_IN_PROGRESS, &st_gdata->st_state);
- st_recv = st_int_recv;
-
- /* this is where all pending registration
- * are signalled to be complete by calling callback functions
- */
- if ((st_gdata->protos_registered != ST_EMPTY) &&
- (test_bit(ST_REG_PENDING, &st_gdata->st_state))) {
- pr_debug(" call reg complete callback ");
- st_reg_complete(st_gdata, 0);
- }
- clear_bit(ST_REG_PENDING, &st_gdata->st_state);
-
- /* check for already registered once more,
- * since the above check is old
- */
- if (st_gdata->is_registered[new_proto->chnl_id] == true) {
- pr_err(" proto %d already registered ",
- new_proto->chnl_id);
- spin_unlock_irqrestore(&st_gdata->lock, flags);
- return -EALREADY;
- }
-
- add_channel_to_table(st_gdata, new_proto);
- st_gdata->protos_registered++;
- new_proto->write = st_write;
- spin_unlock_irqrestore(&st_gdata->lock, flags);
- return err;
- }
- /* if fw is already downloaded & new stack registers protocol */
- else {
- add_channel_to_table(st_gdata, new_proto);
- st_gdata->protos_registered++;
- new_proto->write = st_write;
-
- /* lock already held before entering else */
- spin_unlock_irqrestore(&st_gdata->lock, flags);
- return err;
- }
-}
-EXPORT_SYMBOL_GPL(st_register);
-
-/* to unregister a protocol -
- * to be called from protocol stack driver
- */
-long st_unregister(struct st_proto_s *proto)
-{
- long err = 0;
- unsigned long flags = 0;
- struct st_data_s *st_gdata;
-
- pr_debug("%s: %d ", __func__, proto->chnl_id);
-
- st_kim_ref(&st_gdata, 0);
- if (!st_gdata || proto->chnl_id >= ST_MAX_CHANNELS) {
- pr_err(" chnl_id %d not supported", proto->chnl_id);
- return -EPROTONOSUPPORT;
- }
-
- spin_lock_irqsave(&st_gdata->lock, flags);
-
- if (st_gdata->is_registered[proto->chnl_id] == false) {
- pr_err(" chnl_id %d not registered", proto->chnl_id);
- spin_unlock_irqrestore(&st_gdata->lock, flags);
- return -EPROTONOSUPPORT;
- }
-
- if (st_gdata->protos_registered)
- st_gdata->protos_registered--;
-
- remove_channel_from_table(st_gdata, proto);
- spin_unlock_irqrestore(&st_gdata->lock, flags);
-
- if ((st_gdata->protos_registered == ST_EMPTY) &&
- (!test_bit(ST_REG_PENDING, &st_gdata->st_state))) {
- pr_info(" all chnl_ids unregistered ");
-
- /* stop traffic on tty */
- if (st_gdata->tty) {
- tty_ldisc_flush(st_gdata->tty);
- stop_tty(st_gdata->tty);
- }
-
- /* all chnl_ids now unregistered */
- st_kim_stop(st_gdata->kim_data);
- /* disable ST LL */
- st_ll_disable(st_gdata);
- }
- return err;
-}
-
-/*
- * called in protocol stack drivers
- * via the write function pointer
- */
-long st_write(struct sk_buff *skb)
-{
- struct st_data_s *st_gdata;
- long len;
-
- st_kim_ref(&st_gdata, 0);
- if (unlikely(skb == NULL || st_gdata == NULL
- || st_gdata->tty == NULL)) {
- pr_err("data/tty unavailable to perform write");
- return -EINVAL;
- }
-
- pr_debug("%d to be written", skb->len);
- len = skb->len;
-
- /* st_ll to decide where to enqueue the skb */
- st_int_enqueue(st_gdata, skb);
- /* wake up */
- st_tx_wakeup(st_gdata);
-
- /* return number of bytes written */
- return len;
-}
-
-/* for protocols making use of shared transport */
-EXPORT_SYMBOL_GPL(st_unregister);
-
-/********************************************************************/
-/*
- * functions called from TTY layer
- */
-static int st_tty_open(struct tty_struct *tty)
-{
- int err = 0;
- struct st_data_s *st_gdata;
- pr_info("%s ", __func__);
-
- st_kim_ref(&st_gdata, 0);
- st_gdata->tty = tty;
- tty->disc_data = st_gdata;
-
- /* don't do an wakeup for now */
- clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
-
- /* mem already allocated
- */
- tty->receive_room = 65536;
- /* Flush any pending characters in the driver and discipline. */
- tty_ldisc_flush(tty);
- tty_driver_flush_buffer(tty);
- /*
- * signal to UIM via KIM that -
- * installation of N_TI_WL ldisc is complete
- */
- st_kim_complete(st_gdata->kim_data);
- pr_debug("done %s", __func__);
- return err;
-}
-
-static void st_tty_close(struct tty_struct *tty)
-{
- unsigned char i = ST_MAX_CHANNELS;
- unsigned long flags = 0;
- struct st_data_s *st_gdata = tty->disc_data;
-
- pr_info("%s ", __func__);
-
- /* TODO:
- * if a protocol has been registered & line discipline
- * un-installed for some reason - what should be done ?
- */
- spin_lock_irqsave(&st_gdata->lock, flags);
- for (i = ST_BT; i < ST_MAX_CHANNELS; i++) {
- if (st_gdata->is_registered[i] == true)
- pr_err("%d not un-registered", i);
- st_gdata->list[i] = NULL;
- st_gdata->is_registered[i] = false;
- }
- st_gdata->protos_registered = 0;
- spin_unlock_irqrestore(&st_gdata->lock, flags);
- /*
- * signal to UIM via KIM that -
- * N_TI_WL ldisc is un-installed
- */
- st_kim_complete(st_gdata->kim_data);
- st_gdata->tty = NULL;
- /* Flush any pending characters in the driver and discipline. */
- tty_ldisc_flush(tty);
- tty_driver_flush_buffer(tty);
-
- spin_lock_irqsave(&st_gdata->lock, flags);
- /* empty out txq and tx_waitq */
- skb_queue_purge(&st_gdata->txq);
- skb_queue_purge(&st_gdata->tx_waitq);
- /* reset the TTY Rx states of ST */
- st_gdata->rx_count = 0;
- st_gdata->rx_state = ST_W4_PACKET_TYPE;
- kfree_skb(st_gdata->rx_skb);
- st_gdata->rx_skb = NULL;
- spin_unlock_irqrestore(&st_gdata->lock, flags);
-
- pr_debug("%s: done ", __func__);
-}
-
-static void st_tty_receive(struct tty_struct *tty, const unsigned char *data,
- char *tty_flags, int count)
-{
-#ifdef VERBOSE
- print_hex_dump(KERN_DEBUG, ">in>", DUMP_PREFIX_NONE,
- 16, 1, data, count, 0);
-#endif
-
- /*
- * if fw download is in progress then route incoming data
- * to KIM for validation
- */
- st_recv(tty->disc_data, data, count);
- pr_debug("done %s", __func__);
-}
-
-/* wake-up function called in from the TTY layer
- * inside the internal wakeup function will be called
- */
-static void st_tty_wakeup(struct tty_struct *tty)
-{
- struct st_data_s *st_gdata = tty->disc_data;
- pr_debug("%s ", __func__);
- /* don't do an wakeup for now */
- clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
-
- /*
- * schedule the internal wakeup instead of calling directly to
- * avoid lockup (port->lock needed in tty->ops->write is
- * already taken here
- */
- schedule_work(&st_gdata->work_write_wakeup);
-}
-
-static void st_tty_flush_buffer(struct tty_struct *tty)
-{
- struct st_data_s *st_gdata = tty->disc_data;
- pr_debug("%s ", __func__);
-
- kfree_skb(st_gdata->tx_skb);
- st_gdata->tx_skb = NULL;
-
- tty_driver_flush_buffer(tty);
- return;
-}
-
-static struct tty_ldisc_ops st_ldisc_ops = {
- .magic = TTY_LDISC_MAGIC,
- .name = "n_st",
- .open = st_tty_open,
- .close = st_tty_close,
- .receive_buf = st_tty_receive,
- .write_wakeup = st_tty_wakeup,
- .flush_buffer = st_tty_flush_buffer,
- .owner = THIS_MODULE
-};
-
-/********************************************************************/
-int st_core_init(struct st_data_s **core_data)
-{
- struct st_data_s *st_gdata;
- long err;
-
- err = tty_register_ldisc(N_TI_WL, &st_ldisc_ops);
- if (err) {
- pr_err("error registering %d line discipline %ld",
- N_TI_WL, err);
- return err;
- }
- pr_debug("registered n_shared line discipline");
-
- st_gdata = kzalloc(sizeof(struct st_data_s), GFP_KERNEL);
- if (!st_gdata) {
- pr_err("memory allocation failed");
- err = tty_unregister_ldisc(N_TI_WL);
- if (err)
- pr_err("unable to un-register ldisc %ld", err);
- err = -ENOMEM;
- return err;
- }
-
- /* Initialize ST TxQ and Tx waitQ queue head. All BT/FM/GPS module skb's
- * will be pushed in this queue for actual transmission.
- */
- skb_queue_head_init(&st_gdata->txq);
- skb_queue_head_init(&st_gdata->tx_waitq);
-
- /* Locking used in st_int_enqueue() to avoid multiple execution */
- spin_lock_init(&st_gdata->lock);
-
- err = st_ll_init(st_gdata);
- if (err) {
- pr_err("error during st_ll initialization(%ld)", err);
- kfree(st_gdata);
- err = tty_unregister_ldisc(N_TI_WL);
- if (err)
- pr_err("unable to un-register ldisc");
- return err;
- }
-
- INIT_WORK(&st_gdata->work_write_wakeup, work_fn_write_wakeup);
-
- *core_data = st_gdata;
- return 0;
-}
-
-void st_core_exit(struct st_data_s *st_gdata)
-{
- long err;
- /* internal module cleanup */
- err = st_ll_deinit(st_gdata);
- if (err)
- pr_err("error during deinit of ST LL %ld", err);
-
- if (st_gdata != NULL) {
- /* Free ST Tx Qs and skbs */
- skb_queue_purge(&st_gdata->txq);
- skb_queue_purge(&st_gdata->tx_waitq);
- kfree_skb(st_gdata->rx_skb);
- kfree_skb(st_gdata->tx_skb);
- /* TTY ldisc cleanup */
- err = tty_unregister_ldisc(N_TI_WL);
- if (err)
- pr_err("unable to un-register ldisc %ld", err);
- /* free the global data pointer */
- kfree(st_gdata);
- }
-}
diff --git a/drivers/misc/ti-st/st_kim.c b/drivers/misc/ti-st/st_kim.c
deleted file mode 100644
index 1874ac922166..000000000000
--- a/drivers/misc/ti-st/st_kim.c
+++ /dev/null
@@ -1,868 +0,0 @@
-/*
- * Shared Transport Line discipline driver Core
- * Init Manager module responsible for GPIO control
- * and firmware download
- * 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
- *
- */
-
-#define pr_fmt(fmt) "(stk) :" fmt
-#include <linux/platform_device.h>
-#include <linux/jiffies.h>
-#include <linux/firmware.h>
-#include <linux/delay.h>
-#include <linux/wait.h>
-#include <linux/gpio.h>
-#include <linux/debugfs.h>
-#include <linux/seq_file.h>
-#include <linux/sched.h>
-#include <linux/sysfs.h>
-#include <linux/tty.h>
-
-#include <linux/skbuff.h>
-#include <linux/ti_wilink_st.h>
-#include <linux/module.h>
-
-#define MAX_ST_DEVICES 3 /* Imagine 1 on each UART for now */
-static struct platform_device *st_kim_devices[MAX_ST_DEVICES];
-
-/**********************************************************************/
-/* internal functions */
-
-/**
- * st_get_plat_device -
- * function which returns the reference to the platform device
- * requested by id. As of now only 1 such device exists (id=0)
- * the context requesting for reference can get the id to be
- * requested by a. The protocol driver which is registering or
- * b. the tty device which is opened.
- */
-static struct platform_device *st_get_plat_device(int id)
-{
- return st_kim_devices[id];
-}
-
-/**
- * validate_firmware_response -
- * function to return whether the firmware response was proper
- * in case of error don't complete so that waiting for proper
- * response times out
- */
-static void validate_firmware_response(struct kim_data_s *kim_gdata)
-{
- struct sk_buff *skb = kim_gdata->rx_skb;
- if (!skb)
- return;
-
- /* these magic numbers are the position in the response buffer which
- * allows us to distinguish whether the response is for the read
- * version info. command
- */
- if (skb->data[2] == 0x01 && skb->data[3] == 0x01 &&
- skb->data[4] == 0x10 && skb->data[5] == 0x00) {
- /* fw version response */
- memcpy(kim_gdata->resp_buffer,
- kim_gdata->rx_skb->data,
- kim_gdata->rx_skb->len);
- kim_gdata->rx_state = ST_W4_PACKET_TYPE;
- kim_gdata->rx_skb = NULL;
- kim_gdata->rx_count = 0;
- } else if (unlikely(skb->data[5] != 0)) {
- pr_err("no proper response during fw download");
- pr_err("data6 %x", skb->data[5]);
- kfree_skb(skb);
- return; /* keep waiting for the proper response */
- }
- /* becos of all the script being downloaded */
- complete_all(&kim_gdata->kim_rcvd);
- kfree_skb(skb);
-}
-
-/* check for data len received inside kim_int_recv
- * most often hit the last case to update state to waiting for data
- */
-static inline int kim_check_data_len(struct kim_data_s *kim_gdata, int len)
-{
- register int room = skb_tailroom(kim_gdata->rx_skb);
-
- pr_debug("len %d room %d", len, room);
-
- if (!len) {
- validate_firmware_response(kim_gdata);
- } else if (len > room) {
- /* Received packet's payload length is larger.
- * We can't accommodate it in created skb.
- */
- pr_err("Data length is too large len %d room %d", len,
- room);
- kfree_skb(kim_gdata->rx_skb);
- } else {
- /* Packet header has non-zero payload length and
- * we have enough space in created skb. Lets read
- * payload data */
- kim_gdata->rx_state = ST_W4_DATA;
- kim_gdata->rx_count = len;
- return len;
- }
-
- /* Change ST LL state to continue to process next
- * packet */
- kim_gdata->rx_state = ST_W4_PACKET_TYPE;
- kim_gdata->rx_skb = NULL;
- kim_gdata->rx_count = 0;
-
- return 0;
-}
-
-/**
- * kim_int_recv - receive function called during firmware download
- * firmware download responses on different UART drivers
- * have been observed to come in bursts of different
- * tty_receive and hence the logic
- */
-static void kim_int_recv(struct kim_data_s *kim_gdata,
- const unsigned char *data, long count)
-{
- const unsigned char *ptr;
- int len = 0;
- unsigned char *plen;
-
- pr_debug("%s", __func__);
- /* Decode received bytes here */
- ptr = data;
- if (unlikely(ptr == NULL)) {
- pr_err(" received null from TTY ");
- return;
- }
-
- while (count) {
- if (kim_gdata->rx_count) {
- len = min_t(unsigned int, kim_gdata->rx_count, count);
- skb_put_data(kim_gdata->rx_skb, ptr, len);
- kim_gdata->rx_count -= len;
- count -= len;
- ptr += len;
-
- if (kim_gdata->rx_count)
- continue;
-
- /* Check ST RX state machine , where are we? */
- switch (kim_gdata->rx_state) {
- /* Waiting for complete packet ? */
- case ST_W4_DATA:
- pr_debug("Complete pkt received");
- validate_firmware_response(kim_gdata);
- kim_gdata->rx_state = ST_W4_PACKET_TYPE;
- kim_gdata->rx_skb = NULL;
- continue;
- /* Waiting for Bluetooth event header ? */
- case ST_W4_HEADER:
- plen =
- (unsigned char *)&kim_gdata->rx_skb->data[1];
- pr_debug("event hdr: plen 0x%02x\n", *plen);
- kim_check_data_len(kim_gdata, *plen);
- continue;
- } /* end of switch */
- } /* end of if rx_state */
- switch (*ptr) {
- /* Bluetooth event packet? */
- case 0x04:
- kim_gdata->rx_state = ST_W4_HEADER;
- kim_gdata->rx_count = 2;
- break;
- default:
- pr_info("unknown packet");
- ptr++;
- count--;
- continue;
- }
- ptr++;
- count--;
- kim_gdata->rx_skb =
- alloc_skb(1024+8, GFP_ATOMIC);
- if (!kim_gdata->rx_skb) {
- pr_err("can't allocate mem for new packet");
- kim_gdata->rx_state = ST_W4_PACKET_TYPE;
- kim_gdata->rx_count = 0;
- return;
- }
- skb_reserve(kim_gdata->rx_skb, 8);
- kim_gdata->rx_skb->cb[0] = 4;
- kim_gdata->rx_skb->cb[1] = 0;
-
- }
- return;
-}
-
-static long read_local_version(struct kim_data_s *kim_gdata, char *bts_scr_name)
-{
- unsigned short version = 0, chip = 0, min_ver = 0, maj_ver = 0;
- const char read_ver_cmd[] = { 0x01, 0x01, 0x10, 0x00 };
- long timeout;
-
- pr_debug("%s", __func__);
-
- reinit_completion(&kim_gdata->kim_rcvd);
- if (4 != st_int_write(kim_gdata->core_data, read_ver_cmd, 4)) {
- pr_err("kim: couldn't write 4 bytes");
- return -EIO;
- }
-
- timeout = wait_for_completion_interruptible_timeout(
- &kim_gdata->kim_rcvd, msecs_to_jiffies(CMD_RESP_TIME));
- if (timeout <= 0) {
- pr_err(" waiting for ver info- timed out or received signal");
- return timeout ? -ERESTARTSYS : -ETIMEDOUT;
- }
- reinit_completion(&kim_gdata->kim_rcvd);
- /* the positions 12 & 13 in the response buffer provide with the
- * chip, major & minor numbers
- */
-
- version =
- MAKEWORD(kim_gdata->resp_buffer[12],
- kim_gdata->resp_buffer[13]);
- chip = (version & 0x7C00) >> 10;
- min_ver = (version & 0x007F);
- maj_ver = (version & 0x0380) >> 7;
-
- if (version & 0x8000)
- maj_ver |= 0x0008;
-
- sprintf(bts_scr_name, "ti-connectivity/TIInit_%d.%d.%d.bts",
- chip, maj_ver, min_ver);
-
- /* to be accessed later via sysfs entry */
- kim_gdata->version.full = version;
- kim_gdata->version.chip = chip;
- kim_gdata->version.maj_ver = maj_ver;
- kim_gdata->version.min_ver = min_ver;
-
- pr_info("%s", bts_scr_name);
- return 0;
-}
-
-static void skip_change_remote_baud(unsigned char **ptr, long *len)
-{
- unsigned char *nxt_action, *cur_action;
- cur_action = *ptr;
-
- nxt_action = cur_action + sizeof(struct bts_action) +
- ((struct bts_action *) cur_action)->size;
-
- if (((struct bts_action *) nxt_action)->type != ACTION_WAIT_EVENT) {
- pr_err("invalid action after change remote baud command");
- } else {
- *ptr = *ptr + sizeof(struct bts_action) +
- ((struct bts_action *)cur_action)->size;
- *len = *len - (sizeof(struct bts_action) +
- ((struct bts_action *)cur_action)->size);
- /* warn user on not commenting these in firmware */
- pr_warn("skipping the wait event of change remote baud");
- }
-}
-
-/**
- * download_firmware -
- * internal function which parses through the .bts firmware
- * script file intreprets SEND, DELAY actions only as of now
- */
-static long download_firmware(struct kim_data_s *kim_gdata)
-{
- long err = 0;
- long len = 0;
- unsigned char *ptr = NULL;
- unsigned char *action_ptr = NULL;
- unsigned char bts_scr_name[40] = { 0 }; /* 40 char long bts scr name? */
- int wr_room_space;
- int cmd_size;
- unsigned long timeout;
-
- err = read_local_version(kim_gdata, bts_scr_name);
- if (err != 0) {
- pr_err("kim: failed to read local ver");
- return err;
- }
- err =
- request_firmware(&kim_gdata->fw_entry, bts_scr_name,
- &kim_gdata->kim_pdev->dev);
- if (unlikely((err != 0) || (kim_gdata->fw_entry->data == NULL) ||
- (kim_gdata->fw_entry->size == 0))) {
- pr_err(" request_firmware failed(errno %ld) for %s", err,
- bts_scr_name);
- return -EINVAL;
- }
- ptr = (void *)kim_gdata->fw_entry->data;
- len = kim_gdata->fw_entry->size;
- /* bts_header to remove out magic number and
- * version
- */
- ptr += sizeof(struct bts_header);
- len -= sizeof(struct bts_header);
-
- while (len > 0 && ptr) {
- pr_debug(" action size %d, type %d ",
- ((struct bts_action *)ptr)->size,
- ((struct bts_action *)ptr)->type);
-
- switch (((struct bts_action *)ptr)->type) {
- case ACTION_SEND_COMMAND: /* action send */
- pr_debug("S");
- action_ptr = &(((struct bts_action *)ptr)->data[0]);
- if (unlikely
- (((struct hci_command *)action_ptr)->opcode ==
- 0xFF36)) {
- /* ignore remote change
- * baud rate HCI VS command */
- pr_warn("change remote baud"
- " rate command in firmware");
- skip_change_remote_baud(&ptr, &len);
- break;
- }
- /*
- * Make sure we have enough free space in uart
- * tx buffer to write current firmware command
- */
- cmd_size = ((struct bts_action *)ptr)->size;
- timeout = jiffies + msecs_to_jiffies(CMD_WR_TIME);
- do {
- wr_room_space =
- st_get_uart_wr_room(kim_gdata->core_data);
- if (wr_room_space < 0) {
- pr_err("Unable to get free "
- "space info from uart tx buffer");
- release_firmware(kim_gdata->fw_entry);
- return wr_room_space;
- }
- mdelay(1); /* wait 1ms before checking room */
- } while ((wr_room_space < cmd_size) &&
- time_before(jiffies, timeout));
-
- /* Timeout happened ? */
- if (time_after_eq(jiffies, timeout)) {
- pr_err("Timeout while waiting for free "
- "free space in uart tx buffer");
- release_firmware(kim_gdata->fw_entry);
- return -ETIMEDOUT;
- }
- /* reinit completion before sending for the
- * relevant wait
- */
- reinit_completion(&kim_gdata->kim_rcvd);
-
- /*
- * Free space found in uart buffer, call st_int_write
- * to send current firmware command to the uart tx
- * buffer.
- */
- err = st_int_write(kim_gdata->core_data,
- ((struct bts_action_send *)action_ptr)->data,
- ((struct bts_action *)ptr)->size);
- if (unlikely(err < 0)) {
- release_firmware(kim_gdata->fw_entry);
- return err;
- }
- /*
- * Check number of bytes written to the uart tx buffer
- * and requested command write size
- */
- if (err != cmd_size) {
- pr_err("Number of bytes written to uart "
- "tx buffer are not matching with "
- "requested cmd write size");
- release_firmware(kim_gdata->fw_entry);
- return -EIO;
- }
- break;
- case ACTION_WAIT_EVENT: /* wait */
- pr_debug("W");
- err = wait_for_completion_interruptible_timeout(
- &kim_gdata->kim_rcvd,
- msecs_to_jiffies(CMD_RESP_TIME));
- if (err <= 0) {
- pr_err("response timeout/signaled during fw download ");
- /* timed out */
- release_firmware(kim_gdata->fw_entry);
- return err ? -ERESTARTSYS : -ETIMEDOUT;
- }
- reinit_completion(&kim_gdata->kim_rcvd);
- break;
- case ACTION_DELAY: /* sleep */
- pr_info("sleep command in scr");
- action_ptr = &(((struct bts_action *)ptr)->data[0]);
- mdelay(((struct bts_action_delay *)action_ptr)->msec);
- break;
- }
- len =
- len - (sizeof(struct bts_action) +
- ((struct bts_action *)ptr)->size);
- ptr =
- ptr + sizeof(struct bts_action) +
- ((struct bts_action *)ptr)->size;
- }
- /* fw download complete */
- release_firmware(kim_gdata->fw_entry);
- return 0;
-}
-
-/**********************************************************************/
-/* functions called from ST core */
-/* called from ST Core, when REG_IN_PROGRESS (registration in progress)
- * can be because of
- * 1. response to read local version
- * 2. during send/recv's of firmware download
- */
-void st_kim_recv(void *disc_data, const unsigned char *data, long count)
-{
- struct st_data_s *st_gdata = (struct st_data_s *)disc_data;
- struct kim_data_s *kim_gdata = st_gdata->kim_data;
-
- /* proceed to gather all data and distinguish read fw version response
- * from other fw responses when data gathering is complete
- */
- kim_int_recv(kim_gdata, data, count);
- return;
-}
-
-/* to signal completion of line discipline installation
- * called from ST Core, upon tty_open
- */
-void st_kim_complete(void *kim_data)
-{
- struct kim_data_s *kim_gdata = (struct kim_data_s *)kim_data;
- complete(&kim_gdata->ldisc_installed);
-}
-
-/**
- * st_kim_start - called from ST Core upon 1st registration
- * This involves toggling the chip enable gpio, reading
- * the firmware version from chip, forming the fw file name
- * based on the chip version, requesting the fw, parsing it
- * and perform download(send/recv).
- */
-long st_kim_start(void *kim_data)
-{
- long err = 0;
- long retry = POR_RETRY_COUNT;
- struct ti_st_plat_data *pdata;
- struct kim_data_s *kim_gdata = (struct kim_data_s *)kim_data;
-
- pr_info(" %s", __func__);
- pdata = kim_gdata->kim_pdev->dev.platform_data;
-
- do {
- /* platform specific enabling code here */
- if (pdata->chip_enable)
- pdata->chip_enable(kim_gdata);
-
- /* Configure BT nShutdown to HIGH state */
- gpio_set_value_cansleep(kim_gdata->nshutdown, GPIO_LOW);
- mdelay(5); /* FIXME: a proper toggle */
- gpio_set_value_cansleep(kim_gdata->nshutdown, GPIO_HIGH);
- mdelay(100);
- /* re-initialize the completion */
- reinit_completion(&kim_gdata->ldisc_installed);
- /* send notification to UIM */
- kim_gdata->ldisc_install = 1;
- pr_info("ldisc_install = 1");
- sysfs_notify(&kim_gdata->kim_pdev->dev.kobj,
- NULL, "install");
- /* wait for ldisc to be installed */
- err = wait_for_completion_interruptible_timeout(
- &kim_gdata->ldisc_installed, msecs_to_jiffies(LDISC_TIME));
- if (!err) {
- /* ldisc installation timeout,
- * flush uart, power cycle BT_EN */
- pr_err("ldisc installation timeout");
- err = st_kim_stop(kim_gdata);
- continue;
- } else {
- /* ldisc installed now */
- pr_info("line discipline installed");
- err = download_firmware(kim_gdata);
- if (err != 0) {
- /* ldisc installed but fw download failed,
- * flush uart & power cycle BT_EN */
- pr_err("download firmware failed");
- err = st_kim_stop(kim_gdata);
- continue;
- } else { /* on success don't retry */
- break;
- }
- }
- } while (retry--);
- return err;
-}
-
-/**
- * st_kim_stop - stop communication with chip.
- * This can be called from ST Core/KIM, on the-
- * (a) last un-register when chip need not be powered there-after,
- * (b) upon failure to either install ldisc or download firmware.
- * The function is responsible to (a) notify UIM about un-installation,
- * (b) flush UART if the ldisc was installed.
- * (c) reset BT_EN - pull down nshutdown at the end.
- * (d) invoke platform's chip disabling routine.
- */
-long st_kim_stop(void *kim_data)
-{
- long err = 0;
- struct kim_data_s *kim_gdata = (struct kim_data_s *)kim_data;
- struct ti_st_plat_data *pdata =
- kim_gdata->kim_pdev->dev.platform_data;
- struct tty_struct *tty = kim_gdata->core_data->tty;
-
- reinit_completion(&kim_gdata->ldisc_installed);
-
- if (tty) { /* can be called before ldisc is installed */
- /* Flush any pending characters in the driver and discipline. */
- tty_ldisc_flush(tty);
- tty_driver_flush_buffer(tty);
- }
-
- /* send uninstall notification to UIM */
- pr_info("ldisc_install = 0");
- kim_gdata->ldisc_install = 0;
- sysfs_notify(&kim_gdata->kim_pdev->dev.kobj, NULL, "install");
-
- /* wait for ldisc to be un-installed */
- err = wait_for_completion_interruptible_timeout(
- &kim_gdata->ldisc_installed, msecs_to_jiffies(LDISC_TIME));
- if (!err) { /* timeout */
- pr_err(" timed out waiting for ldisc to be un-installed");
- err = -ETIMEDOUT;
- }
-
- /* By default configure BT nShutdown to LOW state */
- gpio_set_value_cansleep(kim_gdata->nshutdown, GPIO_LOW);
- mdelay(1);
- gpio_set_value_cansleep(kim_gdata->nshutdown, GPIO_HIGH);
- mdelay(1);
- gpio_set_value_cansleep(kim_gdata->nshutdown, GPIO_LOW);
-
- /* platform specific disable */
- if (pdata->chip_disable)
- pdata->chip_disable(kim_gdata);
- return err;
-}
-
-/**********************************************************************/
-/* functions called from subsystems */
-/* called when debugfs entry is read from */
-
-static int show_version(struct seq_file *s, void *unused)
-{
- struct kim_data_s *kim_gdata = (struct kim_data_s *)s->private;
- seq_printf(s, "%04X %d.%d.%d\n", kim_gdata->version.full,
- kim_gdata->version.chip, kim_gdata->version.maj_ver,
- kim_gdata->version.min_ver);
- return 0;
-}
-
-static int show_list(struct seq_file *s, void *unused)
-{
- struct kim_data_s *kim_gdata = (struct kim_data_s *)s->private;
- kim_st_list_protocols(kim_gdata->core_data, s);
- return 0;
-}
-
-static ssize_t show_install(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct kim_data_s *kim_data = dev_get_drvdata(dev);
- return sprintf(buf, "%d\n", kim_data->ldisc_install);
-}
-
-#ifdef DEBUG
-static ssize_t store_dev_name(struct device *dev,
- struct device_attribute *attr, const char *buf, size_t count)
-{
- struct kim_data_s *kim_data = dev_get_drvdata(dev);
- pr_debug("storing dev name >%s<", buf);
- strncpy(kim_data->dev_name, buf, count);
- pr_debug("stored dev name >%s<", kim_data->dev_name);
- return count;
-}
-
-static ssize_t store_baud_rate(struct device *dev,
- struct device_attribute *attr, const char *buf, size_t count)
-{
- struct kim_data_s *kim_data = dev_get_drvdata(dev);
- pr_debug("storing baud rate >%s<", buf);
- sscanf(buf, "%ld", &kim_data->baud_rate);
- pr_debug("stored baud rate >%ld<", kim_data->baud_rate);
- return count;
-}
-#endif /* if DEBUG */
-
-static ssize_t show_dev_name(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct kim_data_s *kim_data = dev_get_drvdata(dev);
- return sprintf(buf, "%s\n", kim_data->dev_name);
-}
-
-static ssize_t show_baud_rate(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct kim_data_s *kim_data = dev_get_drvdata(dev);
- return sprintf(buf, "%d\n", kim_data->baud_rate);
-}
-
-static ssize_t show_flow_cntrl(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct kim_data_s *kim_data = dev_get_drvdata(dev);
- return sprintf(buf, "%d\n", kim_data->flow_cntrl);
-}
-
-/* structures specific for sysfs entries */
-static struct kobj_attribute ldisc_install =
-__ATTR(install, 0444, (void *)show_install, NULL);
-
-static struct kobj_attribute uart_dev_name =
-#ifdef DEBUG /* TODO: move this to debug-fs if possible */
-__ATTR(dev_name, 0644, (void *)show_dev_name, (void *)store_dev_name);
-#else
-__ATTR(dev_name, 0444, (void *)show_dev_name, NULL);
-#endif
-
-static struct kobj_attribute uart_baud_rate =
-#ifdef DEBUG /* TODO: move to debugfs */
-__ATTR(baud_rate, 0644, (void *)show_baud_rate, (void *)store_baud_rate);
-#else
-__ATTR(baud_rate, 0444, (void *)show_baud_rate, NULL);
-#endif
-
-static struct kobj_attribute uart_flow_cntrl =
-__ATTR(flow_cntrl, 0444, (void *)show_flow_cntrl, NULL);
-
-static struct attribute *uim_attrs[] = {
- &ldisc_install.attr,
- &uart_dev_name.attr,
- &uart_baud_rate.attr,
- &uart_flow_cntrl.attr,
- NULL,
-};
-
-static const struct attribute_group uim_attr_grp = {
- .attrs = uim_attrs,
-};
-
-/**
- * st_kim_ref - reference the core's data
- * This references the per-ST platform device in the arch/xx/
- * board-xx.c file.
- * This would enable multiple such platform devices to exist
- * on a given platform
- */
-void st_kim_ref(struct st_data_s **core_data, int id)
-{
- struct platform_device *pdev;
- struct kim_data_s *kim_gdata;
- /* get kim_gdata reference from platform device */
- pdev = st_get_plat_device(id);
- if (!pdev)
- goto err;
- kim_gdata = platform_get_drvdata(pdev);
- if (!kim_gdata)
- goto err;
-
- *core_data = kim_gdata->core_data;
- return;
-err:
- *core_data = NULL;
-}
-
-static int kim_version_open(struct inode *i, struct file *f)
-{
- return single_open(f, show_version, i->i_private);
-}
-
-static int kim_list_open(struct inode *i, struct file *f)
-{
- return single_open(f, show_list, i->i_private);
-}
-
-static const struct file_operations version_debugfs_fops = {
- /* version info */
- .open = kim_version_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-static const struct file_operations list_debugfs_fops = {
- /* protocols info */
- .open = kim_list_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-/**********************************************************************/
-/* functions called from platform device driver subsystem
- * need to have a relevant platform device entry in the platform's
- * board-*.c file
- */
-
-static struct dentry *kim_debugfs_dir;
-static int kim_probe(struct platform_device *pdev)
-{
- struct kim_data_s *kim_gdata;
- struct ti_st_plat_data *pdata = pdev->dev.platform_data;
- int err;
-
- if ((pdev->id != -1) && (pdev->id < MAX_ST_DEVICES)) {
- /* multiple devices could exist */
- st_kim_devices[pdev->id] = pdev;
- } else {
- /* platform's sure about existence of 1 device */
- st_kim_devices[0] = pdev;
- }
-
- kim_gdata = kzalloc(sizeof(struct kim_data_s), GFP_KERNEL);
- if (!kim_gdata) {
- pr_err("no mem to allocate");
- return -ENOMEM;
- }
- platform_set_drvdata(pdev, kim_gdata);
-
- err = st_core_init(&kim_gdata->core_data);
- if (err != 0) {
- pr_err(" ST core init failed");
- err = -EIO;
- goto err_core_init;
- }
- /* refer to itself */
- kim_gdata->core_data->kim_data = kim_gdata;
-
- /* Claim the chip enable nShutdown gpio from the system */
- kim_gdata->nshutdown = pdata->nshutdown_gpio;
- err = gpio_request(kim_gdata->nshutdown, "kim");
- if (unlikely(err)) {
- pr_err(" gpio %d request failed ", kim_gdata->nshutdown);
- goto err_sysfs_group;
- }
-
- /* Configure nShutdown GPIO as output=0 */
- err = gpio_direction_output(kim_gdata->nshutdown, 0);
- if (unlikely(err)) {
- pr_err(" unable to configure gpio %d", kim_gdata->nshutdown);
- goto err_sysfs_group;
- }
- /* get reference of pdev for request_firmware
- */
- kim_gdata->kim_pdev = pdev;
- init_completion(&kim_gdata->kim_rcvd);
- init_completion(&kim_gdata->ldisc_installed);
-
- err = sysfs_create_group(&pdev->dev.kobj, &uim_attr_grp);
- if (err) {
- pr_err("failed to create sysfs entries");
- goto err_sysfs_group;
- }
-
- /* copying platform data */
- strncpy(kim_gdata->dev_name, pdata->dev_name, UART_DEV_NAME_LEN);
- kim_gdata->flow_cntrl = pdata->flow_cntrl;
- kim_gdata->baud_rate = pdata->baud_rate;
- pr_info("sysfs entries created\n");
-
- kim_debugfs_dir = debugfs_create_dir("ti-st", NULL);
- if (!kim_debugfs_dir) {
- pr_err(" debugfs entries creation failed ");
- return 0;
- }
-
- debugfs_create_file("version", S_IRUGO, kim_debugfs_dir,
- kim_gdata, &version_debugfs_fops);
- debugfs_create_file("protocols", S_IRUGO, kim_debugfs_dir,
- kim_gdata, &list_debugfs_fops);
- return 0;
-
-err_sysfs_group:
- st_core_exit(kim_gdata->core_data);
-
-err_core_init:
- kfree(kim_gdata);
-
- return err;
-}
-
-static int kim_remove(struct platform_device *pdev)
-{
- /* free the GPIOs requested */
- struct ti_st_plat_data *pdata = pdev->dev.platform_data;
- struct kim_data_s *kim_gdata;
-
- kim_gdata = platform_get_drvdata(pdev);
-
- /* Free the Bluetooth/FM/GPIO
- * nShutdown gpio from the system
- */
- gpio_free(pdata->nshutdown_gpio);
- pr_info("nshutdown GPIO Freed");
-
- debugfs_remove_recursive(kim_debugfs_dir);
- sysfs_remove_group(&pdev->dev.kobj, &uim_attr_grp);
- pr_info("sysfs entries removed");
-
- kim_gdata->kim_pdev = NULL;
- st_core_exit(kim_gdata->core_data);
-
- kfree(kim_gdata);
- kim_gdata = NULL;
- return 0;
-}
-
-static int kim_suspend(struct platform_device *pdev, pm_message_t state)
-{
- struct ti_st_plat_data *pdata = pdev->dev.platform_data;
-
- if (pdata->suspend)
- return pdata->suspend(pdev, state);
-
- return 0;
-}
-
-static int kim_resume(struct platform_device *pdev)
-{
- struct ti_st_plat_data *pdata = pdev->dev.platform_data;
-
- if (pdata->resume)
- return pdata->resume(pdev);
-
- return 0;
-}
-
-/**********************************************************************/
-/* entry point for ST KIM module, called in from ST Core */
-static struct platform_driver kim_platform_driver = {
- .probe = kim_probe,
- .remove = kim_remove,
- .suspend = kim_suspend,
- .resume = kim_resume,
- .driver = {
- .name = "kim",
- },
-};
-
-module_platform_driver(kim_platform_driver);
-
-MODULE_AUTHOR("Pavan Savoy <pavan_savoy@ti.com>");
-MODULE_DESCRIPTION("Shared Transport Driver for TI BT/FM/GPS combo chips ");
-MODULE_LICENSE("GPL");
diff --git a/drivers/misc/ti-st/st_ll.c b/drivers/misc/ti-st/st_ll.c
deleted file mode 100644
index 93b4d67cc4a3..000000000000
--- a/drivers/misc/ti-st/st_ll.c
+++ /dev/null
@@ -1,169 +0,0 @@
-/*
- * Shared Transport driver
- * HCI-LL module responsible for TI proprietary HCI_LL protocol
- * 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
- *
- */
-
-#define pr_fmt(fmt) "(stll) :" fmt
-#include <linux/skbuff.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/ti_wilink_st.h>
-
-/**********************************************************************/
-/* internal functions */
-static void send_ll_cmd(struct st_data_s *st_data,
- unsigned char cmd)
-{
-
- pr_debug("%s: writing %x", __func__, cmd);
- st_int_write(st_data, &cmd, 1);
- return;
-}
-
-static void ll_device_want_to_sleep(struct st_data_s *st_data)
-{
- struct kim_data_s *kim_data;
- struct ti_st_plat_data *pdata;
-
- pr_debug("%s", __func__);
- /* sanity check */
- if (st_data->ll_state != ST_LL_AWAKE)
- pr_err("ERR hcill: ST_LL_GO_TO_SLEEP_IND"
- "in state %ld", st_data->ll_state);
-
- send_ll_cmd(st_data, LL_SLEEP_ACK);
- /* update state */
- st_data->ll_state = ST_LL_ASLEEP;
-
- /* communicate to platform about chip asleep */
- kim_data = st_data->kim_data;
- pdata = kim_data->kim_pdev->dev.platform_data;
- if (pdata->chip_asleep)
- pdata->chip_asleep(NULL);
-}
-
-static void ll_device_want_to_wakeup(struct st_data_s *st_data)
-{
- struct kim_data_s *kim_data;
- struct ti_st_plat_data *pdata;
-
- /* diff actions in diff states */
- switch (st_data->ll_state) {
- case ST_LL_ASLEEP:
- send_ll_cmd(st_data, LL_WAKE_UP_ACK); /* send wake_ack */
- break;
- case ST_LL_ASLEEP_TO_AWAKE:
- /* duplicate wake_ind */
- pr_err("duplicate wake_ind while waiting for Wake ack");
- break;
- case ST_LL_AWAKE:
- /* duplicate wake_ind */
- pr_err("duplicate wake_ind already AWAKE");
- break;
- case ST_LL_AWAKE_TO_ASLEEP:
- /* duplicate wake_ind */
- pr_err("duplicate wake_ind");
- break;
- }
- /* update state */
- st_data->ll_state = ST_LL_AWAKE;
-
- /* communicate to platform about chip wakeup */
- kim_data = st_data->kim_data;
- pdata = kim_data->kim_pdev->dev.platform_data;
- if (pdata->chip_awake)
- pdata->chip_awake(NULL);
-}
-
-/**********************************************************************/
-/* functions invoked by ST Core */
-
-/* called when ST Core wants to
- * enable ST LL */
-void st_ll_enable(struct st_data_s *ll)
-{
- ll->ll_state = ST_LL_AWAKE;
-}
-
-/* called when ST Core /local module wants to
- * disable ST LL */
-void st_ll_disable(struct st_data_s *ll)
-{
- ll->ll_state = ST_LL_INVALID;
-}
-
-/* called when ST Core wants to update the state */
-void st_ll_wakeup(struct st_data_s *ll)
-{
- if (likely(ll->ll_state != ST_LL_AWAKE)) {
- send_ll_cmd(ll, LL_WAKE_UP_IND); /* WAKE_IND */
- ll->ll_state = ST_LL_ASLEEP_TO_AWAKE;
- } else {
- /* don't send the duplicate wake_indication */
- pr_err(" Chip already AWAKE ");
- }
-}
-
-/* called when ST Core wants the state */
-unsigned long st_ll_getstate(struct st_data_s *ll)
-{
- pr_debug(" returning state %ld", ll->ll_state);
- return ll->ll_state;
-}
-
-/* called from ST Core, when a PM related packet arrives */
-unsigned long st_ll_sleep_state(struct st_data_s *st_data,
- unsigned char cmd)
-{
- switch (cmd) {
- case LL_SLEEP_IND: /* sleep ind */
- pr_debug("sleep indication recvd");
- ll_device_want_to_sleep(st_data);
- break;
- case LL_SLEEP_ACK: /* sleep ack */
- pr_err("sleep ack rcvd: host shouldn't");
- break;
- case LL_WAKE_UP_IND: /* wake ind */
- pr_debug("wake indication recvd");
- ll_device_want_to_wakeup(st_data);
- break;
- case LL_WAKE_UP_ACK: /* wake ack */
- pr_debug("wake ack rcvd");
- st_data->ll_state = ST_LL_AWAKE;
- break;
- default:
- pr_err(" unknown input/state ");
- return -EINVAL;
- }
- return 0;
-}
-
-/* Called from ST CORE to initialize ST LL */
-long st_ll_init(struct st_data_s *ll)
-{
- /* set state to invalid */
- ll->ll_state = ST_LL_INVALID;
- return 0;
-}
-
-/* Called from ST CORE to de-initialize ST LL */
-long st_ll_deinit(struct st_data_s *ll)
-{
- return 0;
-}
diff --git a/include/linux/ti_wilink_st.h b/include/linux/ti_wilink_st.h
index a9de5654b0cd..76a372bdf540 100644
--- a/include/linux/ti_wilink_st.h
+++ b/include/linux/ti_wilink_st.h
@@ -27,268 +27,9 @@

#include <linux/skbuff.h>

-/**
- * 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_CHANNELS = 16,
-};
-
-/**
- * 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.
- * @chnl_id: channel id the protocol driver is interested in, the channel
- * id is nothing but the 1st byte of the packet in UART frame.
- * @max_frame_size: size of the largest frame the protocol can receive.
- * @hdr_len: length of the header structure of the protocol.
- * @offset_len_in_hdr: this provides the offset of the length field in the
- * header structure of the protocol header, to assist ST to know
- * how much to receive, if the data is split across UART frames.
- * @len_size: whether the length field inside the header is 2 bytes
- * or 1 byte.
- * @reserve: the number of bytes ST needs to reserve in the skb being
- * prepared for the protocol driver.
- */
-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 *, int data);
- long (*write) (struct sk_buff *skb);
- void *priv_data;
-
- unsigned char chnl_id;
- unsigned short max_frame_size;
- unsigned char hdr_len;
- unsigned char offset_len_in_hdr;
- unsigned char len_size;
- unsigned char reserve;
-};
-
-extern long st_register(struct st_proto_s *);
-extern long st_unregister(struct st_proto_s *);
-
void hci_ti_set_fm_handler(struct device *dev, void (*recv_handler) (void *, struct sk_buff *), void *drvdata);
int hci_ti_fm_send(struct device *dev, struct sk_buff *skb);

-/*
- * 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.
- * @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.
- * @rx_chnl: the channel ID for which the data is getting accumalated for.
- * @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 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_CHANNELS];
- bool is_registered[ST_MAX_CHANNELS];
- unsigned long rx_state;
- unsigned long rx_count;
- struct sk_buff *rx_skb;
- unsigned char rx_chnl;
- struct sk_buff_head txq, tx_waitq;
- spinlock_t lock;
- unsigned char protos_registered;
- unsigned long ll_state;
- void *kim_data;
- struct tty_struct *tty;
- struct work_struct work_write_wakeup;
-};
-
-/*
- * wrapper around tty->ops->write_room to check
- * availability during firmware download
- */
-int st_get_uart_wr_room(struct st_data_s *st_gdata);
-/**
- * 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 1000
-#define CMD_RESP_TIME 800
-#define CMD_WR_TIME 5000
-#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;
-};
-
-#define UART_DEV_NAME_LEN 32
-/**
- * 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.
- * @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.
- * @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;
- unsigned nshutdown;
- unsigned long rx_state;
- unsigned long rx_count;
- struct sk_buff *rx_skb;
- struct st_data_s *core_data;
- struct chip_version version;
- unsigned char ldisc_install;
- unsigned char dev_name[UART_DEV_NAME_LEN + 1];
- unsigned flow_cntrl;
- unsigned baud_rate;
-};
-
-/**
- * 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_complete(void *);
-void kim_st_list_protocols(struct st_data_s *, void *);
-void st_kim_recv(void *, const unsigned char *, long);
-
-
/*
* BTS headers
*/
@@ -355,47 +96,6 @@ struct hci_command {
u32 speed;
} __attribute__ ((packed));

-/*
- * header information used by st_ll.c
- */
-
-/* ST LL receiver states */
-#define ST_W4_PACKET_TYPE 0
-#define ST_W4_HEADER 1
-#define ST_W4_DATA 2
-
-/* 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
@@ -416,39 +116,4 @@ struct gps_event_hdr {
u16 plen;
} __attribute__ ((packed));

-/**
- * struct ti_st_plat_data - platform data shared between ST driver and
- * platform specific board file which adds the ST device.
- * @nshutdown_gpio: Host's GPIO line to which chip's BT_EN is connected.
- * @dev_name: The UART/TTY name to which chip is interfaced. (eg: /dev/ttyS1)
- * @flow_cntrl: Should always be 1, since UART's CTS/RTS is used for PM
- * purposes.
- * @baud_rate: The baud rate supported by the Host UART controller, this will
- * be shared across with the chip via a HCI VS command from User-Space Init
- * Mgr application.
- * @suspend:
- * @resume: legacy PM routines hooked to platform specific board file, so as
- * to take chip-host interface specific action.
- * @chip_enable:
- * @chip_disable: Platform/Interface specific mux mode setting, GPIO
- * configuring, Host side PM disabling etc.. can be done here.
- * @chip_asleep:
- * @chip_awake: Chip specific deep sleep states is communicated to Host
- * specific board-xx.c to take actions such as cut UART clocks when chip
- * asleep or run host faster when chip awake etc..
- *
- */
-struct ti_st_plat_data {
- u32 nshutdown_gpio;
- unsigned char dev_name[UART_DEV_NAME_LEN]; /* uart name */
- u32 flow_cntrl; /* flow control flag */
- u32 baud_rate;
- int (*suspend)(struct platform_device *, pm_message_t);
- int (*resume)(struct platform_device *);
- int (*chip_enable) (struct kim_data_s *);
- int (*chip_disable) (struct kim_data_s *);
- int (*chip_asleep) (struct kim_data_s *);
- int (*chip_awake) (struct kim_data_s *);
-};
-
#endif /* TI_WILINK_ST_H */
--
2.19.2
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