diff options
Diffstat (limited to 'drivers/misc/ti-st/st_kim.c')
| -rw-r--r-- | drivers/misc/ti-st/st_kim.c | 839 |
1 files changed, 0 insertions, 839 deletions
diff --git a/drivers/misc/ti-st/st_kim.c b/drivers/misc/ti-st/st_kim.c deleted file mode 100644 index ff172cf4614d..000000000000 --- a/drivers/misc/ti-st/st_kim.c +++ /dev/null @@ -1,839 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * 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> - */ - -#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 u8 *ptr, - size_t count) -{ - int len = 0; - unsigned char *plen; - - pr_debug("%s", __func__); - /* Decode received bytes here */ - 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; - static const char read_ver_cmd[] = { 0x01, 0x01, 0x10, 0x00 }; - long time_left; - - 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; - } - - time_left = wait_for_completion_interruptible_timeout( - &kim_gdata->kim_rcvd, msecs_to_jiffies(CMD_RESP_TIME)); - if (time_left <= 0) { - pr_err(" waiting for ver info- timed out or received signal"); - return time_left ? -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 u8 *data, size_t 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 version_show(struct seq_file *s, void *unused) -{ - struct kim_data_s *kim_gdata = 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 list_show(struct seq_file *s, void *unused) -{ - struct kim_data_s *kim_gdata = 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); - strscpy(kim_data->dev_name, buf, sizeof(kim_data->dev_name)); - 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; -} - -DEFINE_SHOW_ATTRIBUTE(version); -DEFINE_SHOW_ATTRIBUTE(list); - -/**********************************************************************/ -/* 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 */ - strscpy(kim_gdata->dev_name, pdata->dev_name, - sizeof(kim_gdata->dev_name)); - 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); - - debugfs_create_file("version", S_IRUGO, kim_debugfs_dir, - kim_gdata, &version_fops); - debugfs_create_file("protocols", S_IRUGO, kim_debugfs_dir, - kim_gdata, &list_fops); - return 0; - -err_sysfs_group: - st_core_exit(kim_gdata->core_data); - -err_core_init: - kfree(kim_gdata); - - return err; -} - -static void 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; -} - -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_new = 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"); |