Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Pavan Savoy | 3055 | 87.96% | 25 | 45.45% |
Luciano Coelho | 147 | 4.23% | 1 | 1.82% |
Naveen Jain | 75 | 2.16% | 1 | 1.82% |
Nicholas Mc Guire | 31 | 0.89% | 1 | 1.82% |
Lee Jones | 22 | 0.63% | 1 | 1.82% |
Gigi Joseph | 21 | 0.60% | 2 | 3.64% |
Matthias Kaehlcke | 20 | 0.58% | 1 | 1.82% |
Rob Herring | 17 | 0.49% | 1 | 1.82% |
Justin Stitt | 14 | 0.40% | 1 | 1.82% |
Wolfram Sang | 12 | 0.35% | 1 | 1.82% |
Yangtao Li | 10 | 0.29% | 1 | 1.82% |
Anton Vasilyev | 6 | 0.17% | 1 | 1.82% |
Steven Rostedt | 5 | 0.14% | 1 | 1.82% |
Jürg Billeter | 5 | 0.14% | 1 | 1.82% |
Jiri Slaby (SUSE) | 5 | 0.14% | 2 | 3.64% |
Randy Dunlap | 3 | 0.09% | 1 | 1.82% |
Jingoo Han | 3 | 0.09% | 1 | 1.82% |
Paul Gortmaker | 3 | 0.09% | 1 | 1.82% |
Dan Carpenter | 3 | 0.09% | 1 | 1.82% |
Enric Balletbò i Serra | 3 | 0.09% | 1 | 1.82% |
Thomas Gleixner | 2 | 0.06% | 1 | 1.82% |
Axel Lin | 2 | 0.06% | 1 | 1.82% |
Uwe Kleine-König | 2 | 0.06% | 1 | 1.82% |
Shahar Lev | 2 | 0.06% | 1 | 1.82% |
Lucas De Marchi | 1 | 0.03% | 1 | 1.82% |
Johannes Berg | 1 | 0.03% | 1 | 1.82% |
Jia-Ju Bai | 1 | 0.03% | 1 | 1.82% |
Colin Ian King | 1 | 0.03% | 1 | 1.82% |
Arvind Yadav | 1 | 0.03% | 1 | 1.82% |
Total | 3473 | 55 |
// 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 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 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");
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