![Naveen Jain](/assets/img/avatar_default.png)
Add version information to be available under the sysfs group for kim. Signed-off-by: Naveen Jain <naveen_jain@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
748 lines
20 KiB
C
748 lines
20 KiB
C
/*
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* Shared Transport Line discipline driver Core
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* Init Manager module responsible for GPIO control
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* and firmware download
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* Copyright (C) 2009 Texas Instruments
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#define pr_fmt(fmt) "(stk) :" fmt
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#include <linux/platform_device.h>
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#include <linux/jiffies.h>
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#include <linux/firmware.h>
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#include <linux/delay.h>
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#include <linux/wait.h>
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#include <linux/gpio.h>
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#include <linux/sched.h>
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#include "st_kim.h"
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/* understand BT events for fw response */
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#include <net/bluetooth/bluetooth.h>
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#include <net/bluetooth/hci_core.h>
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#include <net/bluetooth/hci.h>
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static int kim_probe(struct platform_device *pdev);
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static int kim_remove(struct platform_device *pdev);
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/* KIM platform device driver structure */
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static struct platform_driver kim_platform_driver = {
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.probe = kim_probe,
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.remove = kim_remove,
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/* TODO: ST driver power management during suspend/resume ?
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*/
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#if 0
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.suspend = kim_suspend,
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.resume = kim_resume,
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#endif
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.driver = {
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.name = "kim",
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.owner = THIS_MODULE,
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},
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};
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static ssize_t show_pid(struct device *dev, struct device_attribute
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*attr, char *buf);
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static ssize_t store_pid(struct device *dev, struct device_attribute
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*devattr, char *buf, size_t count);
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static ssize_t show_list(struct device *dev, struct device_attribute
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*attr, char *buf);
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static ssize_t show_version(struct device *dev, struct device_attribute
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*attr, char *buf);
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/* structures specific for sysfs entries */
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static struct kobj_attribute pid_attr =
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__ATTR(pid, 0644, (void *)show_pid, (void *)store_pid);
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static struct kobj_attribute list_protocols =
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__ATTR(protocols, 0444, (void *)show_list, NULL);
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static struct kobj_attribute chip_version =
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__ATTR(version, 0444, (void *)show_version, NULL);
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static struct attribute *uim_attrs[] = {
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&pid_attr.attr,
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/* add more debug sysfs entries */
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&list_protocols.attr,
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&chip_version.attr,
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NULL,
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};
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static struct attribute_group uim_attr_grp = {
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.attrs = uim_attrs,
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};
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static int kim_toggle_radio(void*, bool);
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static const struct rfkill_ops kim_rfkill_ops = {
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.set_block = kim_toggle_radio,
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};
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/* strings to be used for rfkill entries and by
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* ST Core to be used for sysfs debug entry
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*/
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#define PROTO_ENTRY(type, name) name
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const unsigned char *protocol_names[] = {
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PROTO_ENTRY(ST_BT, "Bluetooth"),
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PROTO_ENTRY(ST_FM, "FM"),
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PROTO_ENTRY(ST_GPS, "GPS"),
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};
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struct kim_data_s *kim_gdata;
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/**********************************************************************/
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/* internal functions */
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/*
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* function to return whether the firmware response was proper
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* in case of error don't complete so that waiting for proper
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* response times out
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*/
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void validate_firmware_response(struct sk_buff *skb)
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{
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if (unlikely(skb->data[5] != 0)) {
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pr_err("no proper response during fw download");
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pr_err("data6 %x", skb->data[5]);
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return; /* keep waiting for the proper response */
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}
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/* becos of all the script being downloaded */
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complete_all(&kim_gdata->kim_rcvd);
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kfree_skb(skb);
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}
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/* check for data len received inside kim_int_recv
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* most often hit the last case to update state to waiting for data
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*/
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static inline int kim_check_data_len(int len)
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{
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register int room = skb_tailroom(kim_gdata->rx_skb);
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pr_info("len %d room %d", len, room);
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if (!len) {
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validate_firmware_response(kim_gdata->rx_skb);
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} else if (len > room) {
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/* Received packet's payload length is larger.
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* We can't accommodate it in created skb.
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*/
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pr_err("Data length is too large len %d room %d", len,
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room);
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kfree_skb(kim_gdata->rx_skb);
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} else {
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/* Packet header has non-zero payload length and
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* we have enough space in created skb. Lets read
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* payload data */
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kim_gdata->rx_state = ST_BT_W4_DATA;
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kim_gdata->rx_count = len;
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return len;
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}
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/* Change ST LL state to continue to process next
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* packet */
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kim_gdata->rx_state = ST_W4_PACKET_TYPE;
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kim_gdata->rx_skb = NULL;
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kim_gdata->rx_count = 0;
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return 0;
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}
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/* receive function called during firmware download
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* - firmware download responses on different UART drivers
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* have been observed to come in bursts of different
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* tty_receive and hence the logic
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*/
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void kim_int_recv(const unsigned char *data, long count)
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{
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register char *ptr;
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struct hci_event_hdr *eh;
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register int len = 0, type = 0;
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pr_info("%s", __func__);
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/* Decode received bytes here */
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ptr = (char *)data;
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if (unlikely(ptr == NULL)) {
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pr_err(" received null from TTY ");
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return;
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}
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while (count) {
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if (kim_gdata->rx_count) {
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len = min_t(unsigned int, kim_gdata->rx_count, count);
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memcpy(skb_put(kim_gdata->rx_skb, len), ptr, len);
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kim_gdata->rx_count -= len;
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count -= len;
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ptr += len;
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if (kim_gdata->rx_count)
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continue;
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/* Check ST RX state machine , where are we? */
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switch (kim_gdata->rx_state) {
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/* Waiting for complete packet ? */
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case ST_BT_W4_DATA:
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pr_info("Complete pkt received");
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validate_firmware_response(kim_gdata->rx_skb);
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kim_gdata->rx_state = ST_W4_PACKET_TYPE;
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kim_gdata->rx_skb = NULL;
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continue;
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/* Waiting for Bluetooth event header ? */
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case ST_BT_W4_EVENT_HDR:
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eh = (struct hci_event_hdr *)kim_gdata->
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rx_skb->data;
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pr_info("Event header: evt 0x%2.2x"
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"plen %d", eh->evt, eh->plen);
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kim_check_data_len(eh->plen);
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continue;
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} /* end of switch */
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} /* end of if rx_state */
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switch (*ptr) {
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/* Bluetooth event packet? */
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case HCI_EVENT_PKT:
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pr_info("Event packet");
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kim_gdata->rx_state = ST_BT_W4_EVENT_HDR;
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kim_gdata->rx_count = HCI_EVENT_HDR_SIZE;
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type = HCI_EVENT_PKT;
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break;
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default:
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pr_info("unknown packet");
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ptr++;
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count--;
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continue;
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} /* end of switch *ptr */
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ptr++;
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count--;
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kim_gdata->rx_skb =
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bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC);
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if (!kim_gdata->rx_skb) {
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pr_err("can't allocate mem for new packet");
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kim_gdata->rx_state = ST_W4_PACKET_TYPE;
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kim_gdata->rx_count = 0;
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return;
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} /* not necessary in this case */
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bt_cb(kim_gdata->rx_skb)->pkt_type = type;
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} /* end of while count */
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pr_info("done %s", __func__);
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return;
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}
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static long read_local_version(char *bts_scr_name)
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{
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unsigned short version = 0, chip = 0, min_ver = 0, maj_ver = 0;
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char read_ver_cmd[] = { 0x01, 0x01, 0x10, 0x00 };
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pr_info("%s", __func__);
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INIT_COMPLETION(kim_gdata->kim_rcvd);
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if (4 != st_int_write(kim_gdata->core_data, read_ver_cmd, 4)) {
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pr_err("kim: couldn't write 4 bytes");
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return ST_ERR_FAILURE;
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}
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if (!wait_for_completion_timeout
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(&kim_gdata->kim_rcvd, msecs_to_jiffies(CMD_RESP_TIME))) {
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pr_err(" waiting for ver info- timed out ");
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return ST_ERR_FAILURE;
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}
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version =
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MAKEWORD(kim_gdata->resp_buffer[13],
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kim_gdata->resp_buffer[14]);
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chip = (version & 0x7C00) >> 10;
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min_ver = (version & 0x007F);
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maj_ver = (version & 0x0380) >> 7;
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if (version & 0x8000)
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maj_ver |= 0x0008;
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sprintf(bts_scr_name, "TIInit_%d.%d.%d.bts", chip, maj_ver, min_ver);
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/* to be accessed later via sysfs entry */
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kim_gdata->version.full = version;
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kim_gdata->version.chip = chip;
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kim_gdata->version.maj_ver = maj_ver;
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kim_gdata->version.min_ver = min_ver;
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pr_info("%s", bts_scr_name);
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return ST_SUCCESS;
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}
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/* internal function which parses through the .bts firmware script file
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* intreprets SEND, DELAY actions only as of now
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*/
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static long download_firmware(void)
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{
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long err = ST_SUCCESS;
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long len = 0;
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register unsigned char *ptr = NULL;
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register unsigned char *action_ptr = NULL;
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unsigned char bts_scr_name[30] = { 0 }; /* 30 char long bts scr name? */
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pr_info("%s", __func__);
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err = read_local_version(bts_scr_name);
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if (err != ST_SUCCESS) {
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pr_err("kim: failed to read local ver");
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return err;
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}
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err =
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request_firmware(&kim_gdata->fw_entry, bts_scr_name,
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&kim_gdata->kim_pdev->dev);
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if (unlikely((err != 0) || (kim_gdata->fw_entry->data == NULL) ||
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(kim_gdata->fw_entry->size == 0))) {
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pr_err(" request_firmware failed(errno %ld) for %s", err,
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bts_scr_name);
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return ST_ERR_FAILURE;
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}
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ptr = (void *)kim_gdata->fw_entry->data;
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len = kim_gdata->fw_entry->size;
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/* bts_header to remove out magic number and
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* version
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*/
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ptr += sizeof(struct bts_header);
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len -= sizeof(struct bts_header);
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while (len > 0 && ptr) {
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pr_info(" action size %d, type %d ",
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((struct bts_action *)ptr)->size,
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((struct bts_action *)ptr)->type);
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switch (((struct bts_action *)ptr)->type) {
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case ACTION_SEND_COMMAND: /* action send */
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action_ptr = &(((struct bts_action *)ptr)->data[0]);
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if (unlikely
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(((struct hci_command *)action_ptr)->opcode ==
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0xFF36)) {
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/* ignore remote change
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* baud rate HCI VS command */
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pr_err
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(" change remote baud\
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rate command in firmware");
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break;
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}
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INIT_COMPLETION(kim_gdata->kim_rcvd);
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err = st_int_write(kim_gdata->core_data,
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((struct bts_action_send *)action_ptr)->data,
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((struct bts_action *)ptr)->size);
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if (unlikely(err < 0)) {
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release_firmware(kim_gdata->fw_entry);
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return ST_ERR_FAILURE;
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}
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if (!wait_for_completion_timeout
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(&kim_gdata->kim_rcvd,
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msecs_to_jiffies(CMD_RESP_TIME))) {
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pr_err
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(" response timeout during fw download ");
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/* timed out */
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release_firmware(kim_gdata->fw_entry);
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return ST_ERR_FAILURE;
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}
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break;
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case ACTION_DELAY: /* sleep */
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pr_info("sleep command in scr");
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action_ptr = &(((struct bts_action *)ptr)->data[0]);
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mdelay(((struct bts_action_delay *)action_ptr)->msec);
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break;
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}
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len =
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len - (sizeof(struct bts_action) +
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((struct bts_action *)ptr)->size);
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ptr =
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ptr + sizeof(struct bts_action) +
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((struct bts_action *)ptr)->size;
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}
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/* fw download complete */
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release_firmware(kim_gdata->fw_entry);
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return ST_SUCCESS;
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}
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/**********************************************************************/
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/* functions called from ST core */
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/* function to toggle the GPIO
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* needs to know whether the GPIO is active high or active low
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*/
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void st_kim_chip_toggle(enum proto_type type, enum kim_gpio_state state)
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{
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pr_info(" %s ", __func__);
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if (kim_gdata->gpios[type] == -1) {
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pr_info(" gpio not requested for protocol %s",
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protocol_names[type]);
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return;
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}
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switch (type) {
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case ST_BT:
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/*Do Nothing */
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break;
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case ST_FM:
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if (state == KIM_GPIO_ACTIVE)
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gpio_set_value(kim_gdata->gpios[ST_FM], GPIO_LOW);
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else
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gpio_set_value(kim_gdata->gpios[ST_FM], GPIO_HIGH);
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break;
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case ST_GPS:
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if (state == KIM_GPIO_ACTIVE)
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gpio_set_value(kim_gdata->gpios[ST_GPS], GPIO_HIGH);
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else
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gpio_set_value(kim_gdata->gpios[ST_GPS], GPIO_LOW);
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break;
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case ST_MAX:
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default:
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break;
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}
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return;
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}
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/* called from ST Core, when REG_IN_PROGRESS (registration in progress)
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* can be because of
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* 1. response to read local version
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* 2. during send/recv's of firmware download
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*/
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void st_kim_recv(void *disc_data, const unsigned char *data, long count)
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{
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pr_info(" %s ", __func__);
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/* copy to local buffer */
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if (unlikely(data[4] == 0x01 && data[5] == 0x10 && data[0] == 0x04)) {
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/* must be the read_ver_cmd */
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memcpy(kim_gdata->resp_buffer, data, count);
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complete_all(&kim_gdata->kim_rcvd);
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return;
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} else {
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kim_int_recv(data, count);
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/* either completes or times out */
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}
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return;
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}
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/* to signal completion of line discipline installation
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* called from ST Core, upon tty_open
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*/
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void st_kim_complete(void)
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{
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complete(&kim_gdata->ldisc_installed);
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}
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/* called from ST Core upon 1st registration
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*/
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long st_kim_start(void)
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{
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long err = ST_SUCCESS;
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long retry = POR_RETRY_COUNT;
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pr_info(" %s", __func__);
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do {
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/* TODO: this is only because rfkill sub-system
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* doesn't send events to user-space if the state
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* isn't changed
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*/
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rfkill_set_hw_state(kim_gdata->rfkill[ST_BT], 1);
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/* Configure BT nShutdown to HIGH state */
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gpio_set_value(kim_gdata->gpios[ST_BT], GPIO_LOW);
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mdelay(5); /* FIXME: a proper toggle */
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gpio_set_value(kim_gdata->gpios[ST_BT], GPIO_HIGH);
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mdelay(100);
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/* re-initialize the completion */
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INIT_COMPLETION(kim_gdata->ldisc_installed);
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#if 0 /* older way of signalling user-space UIM */
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/* send signal to UIM */
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err = kill_pid(find_get_pid(kim_gdata->uim_pid), SIGUSR2, 0);
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if (err != 0) {
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pr_info(" sending SIGUSR2 to uim failed %ld", err);
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err = ST_ERR_FAILURE;
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continue;
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}
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#endif
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/* unblock and send event to UIM via /dev/rfkill */
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rfkill_set_hw_state(kim_gdata->rfkill[ST_BT], 0);
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/* wait for ldisc to be installed */
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err = wait_for_completion_timeout(&kim_gdata->ldisc_installed,
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msecs_to_jiffies(LDISC_TIME));
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if (!err) { /* timeout */
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pr_err("line disc installation timed out ");
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err = ST_ERR_FAILURE;
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continue;
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} else {
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/* ldisc installed now */
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pr_info(" line discipline installed ");
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err = download_firmware();
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if (err != ST_SUCCESS) {
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pr_err("download firmware failed");
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continue;
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} else { /* on success don't retry */
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break;
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}
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}
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} while (retry--);
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return err;
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}
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/* called from ST Core, on the last un-registration
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*/
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long st_kim_stop(void)
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{
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long err = ST_SUCCESS;
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INIT_COMPLETION(kim_gdata->ldisc_installed);
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#if 0 /* older way of signalling user-space UIM */
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/* send signal to UIM */
|
|
err = kill_pid(find_get_pid(kim_gdata->uim_pid), SIGUSR2, 1);
|
|
if (err != 0) {
|
|
pr_err("sending SIGUSR2 to uim failed %ld", err);
|
|
return ST_ERR_FAILURE;
|
|
}
|
|
#endif
|
|
/* set BT rfkill to be blocked */
|
|
err = rfkill_set_hw_state(kim_gdata->rfkill[ST_BT], 1);
|
|
|
|
/* wait for ldisc to be un-installed */
|
|
err = wait_for_completion_timeout(&kim_gdata->ldisc_installed,
|
|
msecs_to_jiffies(LDISC_TIME));
|
|
if (!err) { /* timeout */
|
|
pr_err(" timed out waiting for ldisc to be un-installed");
|
|
return ST_ERR_FAILURE;
|
|
}
|
|
|
|
/* By default configure BT nShutdown to LOW state */
|
|
gpio_set_value(kim_gdata->gpios[ST_BT], GPIO_LOW);
|
|
mdelay(1);
|
|
gpio_set_value(kim_gdata->gpios[ST_BT], GPIO_HIGH);
|
|
mdelay(1);
|
|
gpio_set_value(kim_gdata->gpios[ST_BT], GPIO_LOW);
|
|
return err;
|
|
}
|
|
|
|
/**********************************************************************/
|
|
/* functions called from subsystems */
|
|
/* called when sysfs entry is read from */
|
|
|
|
static ssize_t show_version(struct device *dev, struct device_attribute
|
|
*attr, char *buf)
|
|
{
|
|
sprintf(buf, "%04X %d.%d.%d", kim_gdata->version.full,
|
|
kim_gdata->version.chip, kim_gdata->version.maj_ver,
|
|
kim_gdata->version.min_ver);
|
|
return strlen(buf);
|
|
}
|
|
|
|
/* called when sysfs entry is written to */
|
|
static ssize_t store_pid(struct device *dev, struct device_attribute
|
|
*devattr, char *buf, size_t count)
|
|
{
|
|
pr_info("%s: pid %s ", __func__, buf);
|
|
sscanf(buf, "%ld", &kim_gdata->uim_pid);
|
|
/* to be made use by kim_start to signal SIGUSR2
|
|
*/
|
|
return strlen(buf);
|
|
}
|
|
|
|
/* called when sysfs entry is read from */
|
|
static ssize_t show_pid(struct device *dev, struct device_attribute
|
|
*attr, char *buf)
|
|
{
|
|
sprintf(buf, "%ld", kim_gdata->uim_pid);
|
|
return strlen(buf);
|
|
}
|
|
|
|
/* called when sysfs entry is read from */
|
|
static ssize_t show_list(struct device *dev, struct device_attribute
|
|
*attr, char *buf)
|
|
{
|
|
kim_st_list_protocols(kim_gdata->core_data, buf);
|
|
return strlen(buf);
|
|
}
|
|
|
|
/* function called from rfkill subsystem, when someone from
|
|
* user space would write 0/1 on the sysfs entry
|
|
* /sys/class/rfkill/rfkill0,1,3/state
|
|
*/
|
|
static int kim_toggle_radio(void *data, bool blocked)
|
|
{
|
|
enum proto_type type = *((enum proto_type *)data);
|
|
pr_info(" %s: %d ", __func__, type);
|
|
|
|
switch (type) {
|
|
case ST_BT:
|
|
/* do nothing */
|
|
break;
|
|
case ST_FM:
|
|
case ST_GPS:
|
|
if (blocked)
|
|
st_kim_chip_toggle(type, KIM_GPIO_INACTIVE);
|
|
else
|
|
st_kim_chip_toggle(type, KIM_GPIO_ACTIVE);
|
|
break;
|
|
case ST_MAX:
|
|
pr_err(" wrong proto type ");
|
|
break;
|
|
}
|
|
return ST_SUCCESS;
|
|
}
|
|
|
|
void st_kim_ref(struct st_data_s **core_data)
|
|
{
|
|
*core_data = kim_gdata->core_data;
|
|
}
|
|
|
|
/**********************************************************************/
|
|
/* functions called from platform device driver subsystem
|
|
* need to have a relevant platform device entry in the platform's
|
|
* board-*.c file
|
|
*/
|
|
|
|
static int kim_probe(struct platform_device *pdev)
|
|
{
|
|
long status;
|
|
long proto;
|
|
long *gpios = pdev->dev.platform_data;
|
|
|
|
status = st_core_init(&kim_gdata->core_data);
|
|
if (status != 0) {
|
|
pr_err(" ST core init failed");
|
|
return ST_ERR_FAILURE;
|
|
}
|
|
|
|
for (proto = 0; proto < ST_MAX; proto++) {
|
|
kim_gdata->gpios[proto] = gpios[proto];
|
|
pr_info(" %ld gpio to be requested", gpios[proto]);
|
|
}
|
|
|
|
for (proto = 0; (proto < ST_MAX) && (gpios[proto] != -1); proto++) {
|
|
/* Claim the Bluetooth/FM/GPIO
|
|
* nShutdown gpio from the system
|
|
*/
|
|
status = gpio_request(gpios[proto], "kim");
|
|
if (unlikely(status)) {
|
|
pr_err(" gpio %ld request failed ", gpios[proto]);
|
|
proto -= 1;
|
|
while (proto >= 0) {
|
|
if (gpios[proto] != -1)
|
|
gpio_free(gpios[proto]);
|
|
}
|
|
return status;
|
|
}
|
|
|
|
/* Configure nShutdown GPIO as output=0 */
|
|
status =
|
|
gpio_direction_output(gpios[proto], 0);
|
|
if (unlikely(status)) {
|
|
pr_err(" unable to configure gpio %ld",
|
|
gpios[proto]);
|
|
proto -= 1;
|
|
while (proto >= 0) {
|
|
if (gpios[proto] != -1)
|
|
gpio_free(gpios[proto]);
|
|
}
|
|
return status;
|
|
}
|
|
}
|
|
/* get reference of pdev for request_firmware
|
|
*/
|
|
kim_gdata->kim_pdev = pdev;
|
|
init_completion(&kim_gdata->kim_rcvd);
|
|
init_completion(&kim_gdata->ldisc_installed);
|
|
|
|
for (proto = 0; (proto < ST_MAX) && (gpios[proto] != -1); proto++) {
|
|
/* TODO: should all types be rfkill_type_bt ? */
|
|
kim_gdata->rf_protos[proto] = proto;
|
|
kim_gdata->rfkill[proto] = rfkill_alloc(protocol_names[proto],
|
|
&pdev->dev, RFKILL_TYPE_BLUETOOTH,
|
|
&kim_rfkill_ops, &kim_gdata->rf_protos[proto]);
|
|
if (kim_gdata->rfkill[proto] == NULL) {
|
|
pr_err("cannot create rfkill entry for gpio %ld",
|
|
gpios[proto]);
|
|
continue;
|
|
}
|
|
/* block upon creation */
|
|
rfkill_init_sw_state(kim_gdata->rfkill[proto], 1);
|
|
status = rfkill_register(kim_gdata->rfkill[proto]);
|
|
if (unlikely(status)) {
|
|
pr_err("rfkill registration failed for gpio %ld",
|
|
gpios[proto]);
|
|
rfkill_unregister(kim_gdata->rfkill[proto]);
|
|
continue;
|
|
}
|
|
pr_info("rfkill entry created for %ld", gpios[proto]);
|
|
}
|
|
|
|
if (sysfs_create_group(&pdev->dev.kobj, &uim_attr_grp)) {
|
|
pr_err(" sysfs entry creation failed");
|
|
return -1;
|
|
}
|
|
pr_info(" sysfs entries created ");
|
|
return ST_SUCCESS;
|
|
}
|
|
|
|
static int kim_remove(struct platform_device *pdev)
|
|
{
|
|
/* free the GPIOs requested
|
|
*/
|
|
long *gpios = pdev->dev.platform_data;
|
|
long proto;
|
|
|
|
for (proto = 0; (proto < ST_MAX) && (gpios[proto] != -1); proto++) {
|
|
/* Claim the Bluetooth/FM/GPIO
|
|
* nShutdown gpio from the system
|
|
*/
|
|
gpio_free(gpios[proto]);
|
|
rfkill_unregister(kim_gdata->rfkill[proto]);
|
|
rfkill_destroy(kim_gdata->rfkill[proto]);
|
|
kim_gdata->rfkill[proto] = NULL;
|
|
}
|
|
pr_info("kim: GPIO Freed");
|
|
sysfs_remove_group(&pdev->dev.kobj, &uim_attr_grp);
|
|
kim_gdata->kim_pdev = NULL;
|
|
st_core_exit(kim_gdata->core_data);
|
|
return ST_SUCCESS;
|
|
}
|
|
|
|
/**********************************************************************/
|
|
/* entry point for ST KIM module, called in from ST Core */
|
|
|
|
static int __init st_kim_init(void)
|
|
{
|
|
long ret = ST_SUCCESS;
|
|
kim_gdata = kzalloc(sizeof(struct kim_data_s), GFP_ATOMIC);
|
|
if (!kim_gdata) {
|
|
pr_err("no mem to allocate");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
ret = platform_driver_register(&kim_platform_driver);
|
|
if (ret != 0) {
|
|
pr_err("platform drv registration failed");
|
|
return ST_ERR_FAILURE;
|
|
}
|
|
return ST_SUCCESS;
|
|
}
|
|
|
|
static void __exit st_kim_deinit(void)
|
|
{
|
|
/* the following returns void */
|
|
platform_driver_unregister(&kim_platform_driver);
|
|
kfree(kim_gdata);
|
|
kim_gdata = NULL;
|
|
}
|
|
|
|
|
|
module_init(st_kim_init);
|
|
module_exit(st_kim_deinit);
|
|
MODULE_AUTHOR("Pavan Savoy <pavan_savoy@ti.com>");
|
|
MODULE_DESCRIPTION("Shared Transport Driver for TI BT/FM/GPS combo chips ");
|
|
MODULE_LICENSE("GPL");
|