Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Shared Transport Line discipline driver Core |
| 3 | * Init Manager module responsible for GPIO control |
| 4 | * and firmware download |
| 5 | * Copyright (C) 2009 Texas Instruments |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License version 2 as |
| 9 | * published by the Free Software Foundation. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | * |
| 20 | */ |
| 21 | |
| 22 | #define pr_fmt(fmt) "(stk) :" fmt |
| 23 | #include <linux/platform_device.h> |
| 24 | #include <linux/jiffies.h> |
| 25 | #include <linux/firmware.h> |
| 26 | #include <linux/delay.h> |
| 27 | #include <linux/wait.h> |
| 28 | #include <linux/gpio.h> |
Pavan Savoy | c1afac1 | 2010-07-28 02:25:59 -0500 | [diff] [blame] | 29 | #include <linux/debugfs.h> |
| 30 | #include <linux/seq_file.h> |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 31 | #include <linux/sched.h> |
Pavan Savoy | 83ef41f | 2010-09-17 12:06:11 -0400 | [diff] [blame] | 32 | #include <linux/rfkill.h> |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 33 | |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 34 | /* understand BT events for fw response */ |
| 35 | #include <net/bluetooth/bluetooth.h> |
| 36 | #include <net/bluetooth/hci_core.h> |
| 37 | #include <net/bluetooth/hci.h> |
| 38 | |
Pavan Savoy | e555867 | 2010-09-30 16:13:30 -0400 | [diff] [blame^] | 39 | #include <linux/ti_wilink_st.h> |
Pavan Savoy | 83ef41f | 2010-09-17 12:06:11 -0400 | [diff] [blame] | 40 | |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 41 | |
| 42 | static int kim_probe(struct platform_device *pdev); |
| 43 | static int kim_remove(struct platform_device *pdev); |
| 44 | |
| 45 | /* KIM platform device driver structure */ |
| 46 | static struct platform_driver kim_platform_driver = { |
| 47 | .probe = kim_probe, |
| 48 | .remove = kim_remove, |
| 49 | /* TODO: ST driver power management during suspend/resume ? |
| 50 | */ |
| 51 | #if 0 |
| 52 | .suspend = kim_suspend, |
| 53 | .resume = kim_resume, |
| 54 | #endif |
| 55 | .driver = { |
| 56 | .name = "kim", |
| 57 | .owner = THIS_MODULE, |
| 58 | }, |
| 59 | }; |
| 60 | |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 61 | static int kim_toggle_radio(void*, bool); |
| 62 | static const struct rfkill_ops kim_rfkill_ops = { |
| 63 | .set_block = kim_toggle_radio, |
| 64 | }; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 65 | |
| 66 | /* strings to be used for rfkill entries and by |
| 67 | * ST Core to be used for sysfs debug entry |
| 68 | */ |
| 69 | #define PROTO_ENTRY(type, name) name |
| 70 | const unsigned char *protocol_names[] = { |
| 71 | PROTO_ENTRY(ST_BT, "Bluetooth"), |
| 72 | PROTO_ENTRY(ST_FM, "FM"), |
| 73 | PROTO_ENTRY(ST_GPS, "GPS"), |
| 74 | }; |
| 75 | |
Pavan Savoy | dbd3a87 | 2010-08-19 14:08:51 -0400 | [diff] [blame] | 76 | #define MAX_ST_DEVICES 3 /* Imagine 1 on each UART for now */ |
| 77 | struct platform_device *st_kim_devices[MAX_ST_DEVICES]; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 78 | |
| 79 | /**********************************************************************/ |
| 80 | /* internal functions */ |
| 81 | |
Pavan Savoy | 36b5aee | 2010-07-22 05:32:06 -0500 | [diff] [blame] | 82 | /** |
Pavan Savoy | dbd3a87 | 2010-08-19 14:08:51 -0400 | [diff] [blame] | 83 | * st_get_plat_device - |
| 84 | * function which returns the reference to the platform device |
| 85 | * requested by id. As of now only 1 such device exists (id=0) |
| 86 | * the context requesting for reference can get the id to be |
| 87 | * requested by a. The protocol driver which is registering or |
| 88 | * b. the tty device which is opened. |
| 89 | */ |
| 90 | static struct platform_device *st_get_plat_device(int id) |
| 91 | { |
| 92 | return st_kim_devices[id]; |
| 93 | } |
| 94 | |
| 95 | /** |
Pavan Savoy | 36b5aee | 2010-07-22 05:32:06 -0500 | [diff] [blame] | 96 | * validate_firmware_response - |
| 97 | * function to return whether the firmware response was proper |
| 98 | * in case of error don't complete so that waiting for proper |
| 99 | * response times out |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 100 | */ |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 101 | void validate_firmware_response(struct kim_data_s *kim_gdata) |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 102 | { |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 103 | struct sk_buff *skb = kim_gdata->rx_skb; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 104 | if (unlikely(skb->data[5] != 0)) { |
| 105 | pr_err("no proper response during fw download"); |
| 106 | pr_err("data6 %x", skb->data[5]); |
| 107 | return; /* keep waiting for the proper response */ |
| 108 | } |
| 109 | /* becos of all the script being downloaded */ |
| 110 | complete_all(&kim_gdata->kim_rcvd); |
| 111 | kfree_skb(skb); |
| 112 | } |
| 113 | |
| 114 | /* check for data len received inside kim_int_recv |
| 115 | * most often hit the last case to update state to waiting for data |
| 116 | */ |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 117 | static inline int kim_check_data_len(struct kim_data_s *kim_gdata, int len) |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 118 | { |
| 119 | register int room = skb_tailroom(kim_gdata->rx_skb); |
| 120 | |
Pavan Savoy | e6d9e64 | 2010-07-22 05:32:05 -0500 | [diff] [blame] | 121 | pr_debug("len %d room %d", len, room); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 122 | |
| 123 | if (!len) { |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 124 | validate_firmware_response(kim_gdata); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 125 | } else if (len > room) { |
| 126 | /* Received packet's payload length is larger. |
| 127 | * We can't accommodate it in created skb. |
| 128 | */ |
| 129 | pr_err("Data length is too large len %d room %d", len, |
| 130 | room); |
| 131 | kfree_skb(kim_gdata->rx_skb); |
| 132 | } else { |
| 133 | /* Packet header has non-zero payload length and |
| 134 | * we have enough space in created skb. Lets read |
| 135 | * payload data */ |
| 136 | kim_gdata->rx_state = ST_BT_W4_DATA; |
| 137 | kim_gdata->rx_count = len; |
| 138 | return len; |
| 139 | } |
| 140 | |
| 141 | /* Change ST LL state to continue to process next |
| 142 | * packet */ |
| 143 | kim_gdata->rx_state = ST_W4_PACKET_TYPE; |
| 144 | kim_gdata->rx_skb = NULL; |
| 145 | kim_gdata->rx_count = 0; |
| 146 | |
| 147 | return 0; |
| 148 | } |
| 149 | |
Pavan Savoy | 36b5aee | 2010-07-22 05:32:06 -0500 | [diff] [blame] | 150 | /** |
| 151 | * kim_int_recv - receive function called during firmware download |
| 152 | * firmware download responses on different UART drivers |
| 153 | * have been observed to come in bursts of different |
| 154 | * tty_receive and hence the logic |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 155 | */ |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 156 | void kim_int_recv(struct kim_data_s *kim_gdata, |
| 157 | const unsigned char *data, long count) |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 158 | { |
| 159 | register char *ptr; |
| 160 | struct hci_event_hdr *eh; |
| 161 | register int len = 0, type = 0; |
| 162 | |
Pavan Savoy | e6d9e64 | 2010-07-22 05:32:05 -0500 | [diff] [blame] | 163 | pr_debug("%s", __func__); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 164 | /* Decode received bytes here */ |
| 165 | ptr = (char *)data; |
| 166 | if (unlikely(ptr == NULL)) { |
| 167 | pr_err(" received null from TTY "); |
| 168 | return; |
| 169 | } |
| 170 | while (count) { |
| 171 | if (kim_gdata->rx_count) { |
| 172 | len = min_t(unsigned int, kim_gdata->rx_count, count); |
| 173 | memcpy(skb_put(kim_gdata->rx_skb, len), ptr, len); |
| 174 | kim_gdata->rx_count -= len; |
| 175 | count -= len; |
| 176 | ptr += len; |
| 177 | |
| 178 | if (kim_gdata->rx_count) |
| 179 | continue; |
| 180 | |
| 181 | /* Check ST RX state machine , where are we? */ |
| 182 | switch (kim_gdata->rx_state) { |
| 183 | /* Waiting for complete packet ? */ |
| 184 | case ST_BT_W4_DATA: |
Pavan Savoy | e6d9e64 | 2010-07-22 05:32:05 -0500 | [diff] [blame] | 185 | pr_debug("Complete pkt received"); |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 186 | validate_firmware_response(kim_gdata); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 187 | kim_gdata->rx_state = ST_W4_PACKET_TYPE; |
| 188 | kim_gdata->rx_skb = NULL; |
| 189 | continue; |
| 190 | /* Waiting for Bluetooth event header ? */ |
| 191 | case ST_BT_W4_EVENT_HDR: |
| 192 | eh = (struct hci_event_hdr *)kim_gdata-> |
| 193 | rx_skb->data; |
Pavan Savoy | e6d9e64 | 2010-07-22 05:32:05 -0500 | [diff] [blame] | 194 | pr_debug("Event header: evt 0x%2.2x" |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 195 | "plen %d", eh->evt, eh->plen); |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 196 | kim_check_data_len(kim_gdata, eh->plen); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 197 | continue; |
| 198 | } /* end of switch */ |
| 199 | } /* end of if rx_state */ |
| 200 | switch (*ptr) { |
| 201 | /* Bluetooth event packet? */ |
| 202 | case HCI_EVENT_PKT: |
| 203 | pr_info("Event packet"); |
| 204 | kim_gdata->rx_state = ST_BT_W4_EVENT_HDR; |
| 205 | kim_gdata->rx_count = HCI_EVENT_HDR_SIZE; |
| 206 | type = HCI_EVENT_PKT; |
| 207 | break; |
| 208 | default: |
| 209 | pr_info("unknown packet"); |
| 210 | ptr++; |
| 211 | count--; |
| 212 | continue; |
Pavan Savoy | 36b5aee | 2010-07-22 05:32:06 -0500 | [diff] [blame] | 213 | } |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 214 | ptr++; |
| 215 | count--; |
| 216 | kim_gdata->rx_skb = |
| 217 | bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC); |
| 218 | if (!kim_gdata->rx_skb) { |
| 219 | pr_err("can't allocate mem for new packet"); |
| 220 | kim_gdata->rx_state = ST_W4_PACKET_TYPE; |
| 221 | kim_gdata->rx_count = 0; |
| 222 | return; |
Pavan Savoy | 36b5aee | 2010-07-22 05:32:06 -0500 | [diff] [blame] | 223 | } |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 224 | bt_cb(kim_gdata->rx_skb)->pkt_type = type; |
Pavan Savoy | 36b5aee | 2010-07-22 05:32:06 -0500 | [diff] [blame] | 225 | } |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 226 | pr_info("done %s", __func__); |
| 227 | return; |
| 228 | } |
| 229 | |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 230 | static long read_local_version(struct kim_data_s *kim_gdata, char *bts_scr_name) |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 231 | { |
| 232 | unsigned short version = 0, chip = 0, min_ver = 0, maj_ver = 0; |
| 233 | char read_ver_cmd[] = { 0x01, 0x01, 0x10, 0x00 }; |
| 234 | |
Pavan Savoy | e6d9e64 | 2010-07-22 05:32:05 -0500 | [diff] [blame] | 235 | pr_debug("%s", __func__); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 236 | |
| 237 | INIT_COMPLETION(kim_gdata->kim_rcvd); |
| 238 | if (4 != st_int_write(kim_gdata->core_data, read_ver_cmd, 4)) { |
| 239 | pr_err("kim: couldn't write 4 bytes"); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 240 | return -1; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 241 | } |
| 242 | |
| 243 | if (!wait_for_completion_timeout |
| 244 | (&kim_gdata->kim_rcvd, msecs_to_jiffies(CMD_RESP_TIME))) { |
| 245 | pr_err(" waiting for ver info- timed out "); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 246 | return -1; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 247 | } |
| 248 | |
| 249 | version = |
Naveen Jain | e2a5328 | 2010-06-09 03:45:33 -0500 | [diff] [blame] | 250 | MAKEWORD(kim_gdata->resp_buffer[13], |
| 251 | kim_gdata->resp_buffer[14]); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 252 | chip = (version & 0x7C00) >> 10; |
| 253 | min_ver = (version & 0x007F); |
| 254 | maj_ver = (version & 0x0380) >> 7; |
| 255 | |
| 256 | if (version & 0x8000) |
| 257 | maj_ver |= 0x0008; |
| 258 | |
| 259 | sprintf(bts_scr_name, "TIInit_%d.%d.%d.bts", chip, maj_ver, min_ver); |
Naveen Jain | e2a5328 | 2010-06-09 03:45:33 -0500 | [diff] [blame] | 260 | |
| 261 | /* to be accessed later via sysfs entry */ |
| 262 | kim_gdata->version.full = version; |
| 263 | kim_gdata->version.chip = chip; |
| 264 | kim_gdata->version.maj_ver = maj_ver; |
| 265 | kim_gdata->version.min_ver = min_ver; |
| 266 | |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 267 | pr_info("%s", bts_scr_name); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 268 | return 0; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 269 | } |
| 270 | |
Pavan Savoy | 36b5aee | 2010-07-22 05:32:06 -0500 | [diff] [blame] | 271 | /** |
| 272 | * download_firmware - |
| 273 | * internal function which parses through the .bts firmware |
| 274 | * script file intreprets SEND, DELAY actions only as of now |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 275 | */ |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 276 | static long download_firmware(struct kim_data_s *kim_gdata) |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 277 | { |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 278 | long err = 0; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 279 | long len = 0; |
| 280 | register unsigned char *ptr = NULL; |
| 281 | register unsigned char *action_ptr = NULL; |
| 282 | unsigned char bts_scr_name[30] = { 0 }; /* 30 char long bts scr name? */ |
| 283 | |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 284 | err = read_local_version(kim_gdata, bts_scr_name); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 285 | if (err != 0) { |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 286 | pr_err("kim: failed to read local ver"); |
| 287 | return err; |
| 288 | } |
| 289 | err = |
| 290 | request_firmware(&kim_gdata->fw_entry, bts_scr_name, |
| 291 | &kim_gdata->kim_pdev->dev); |
| 292 | if (unlikely((err != 0) || (kim_gdata->fw_entry->data == NULL) || |
| 293 | (kim_gdata->fw_entry->size == 0))) { |
| 294 | pr_err(" request_firmware failed(errno %ld) for %s", err, |
| 295 | bts_scr_name); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 296 | return -1; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 297 | } |
| 298 | ptr = (void *)kim_gdata->fw_entry->data; |
| 299 | len = kim_gdata->fw_entry->size; |
| 300 | /* bts_header to remove out magic number and |
| 301 | * version |
| 302 | */ |
| 303 | ptr += sizeof(struct bts_header); |
| 304 | len -= sizeof(struct bts_header); |
| 305 | |
| 306 | while (len > 0 && ptr) { |
Pavan Savoy | e6d9e64 | 2010-07-22 05:32:05 -0500 | [diff] [blame] | 307 | pr_debug(" action size %d, type %d ", |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 308 | ((struct bts_action *)ptr)->size, |
| 309 | ((struct bts_action *)ptr)->type); |
| 310 | |
| 311 | switch (((struct bts_action *)ptr)->type) { |
| 312 | case ACTION_SEND_COMMAND: /* action send */ |
| 313 | action_ptr = &(((struct bts_action *)ptr)->data[0]); |
| 314 | if (unlikely |
| 315 | (((struct hci_command *)action_ptr)->opcode == |
| 316 | 0xFF36)) { |
| 317 | /* ignore remote change |
| 318 | * baud rate HCI VS command */ |
| 319 | pr_err |
Pavan Savoy | e6d9e64 | 2010-07-22 05:32:05 -0500 | [diff] [blame] | 320 | (" change remote baud" |
| 321 | " rate command in firmware"); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 322 | break; |
| 323 | } |
| 324 | |
| 325 | INIT_COMPLETION(kim_gdata->kim_rcvd); |
| 326 | err = st_int_write(kim_gdata->core_data, |
| 327 | ((struct bts_action_send *)action_ptr)->data, |
| 328 | ((struct bts_action *)ptr)->size); |
| 329 | if (unlikely(err < 0)) { |
| 330 | release_firmware(kim_gdata->fw_entry); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 331 | return -1; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 332 | } |
| 333 | if (!wait_for_completion_timeout |
| 334 | (&kim_gdata->kim_rcvd, |
| 335 | msecs_to_jiffies(CMD_RESP_TIME))) { |
| 336 | pr_err |
| 337 | (" response timeout during fw download "); |
| 338 | /* timed out */ |
| 339 | release_firmware(kim_gdata->fw_entry); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 340 | return -1; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 341 | } |
| 342 | break; |
| 343 | case ACTION_DELAY: /* sleep */ |
| 344 | pr_info("sleep command in scr"); |
| 345 | action_ptr = &(((struct bts_action *)ptr)->data[0]); |
| 346 | mdelay(((struct bts_action_delay *)action_ptr)->msec); |
| 347 | break; |
| 348 | } |
| 349 | len = |
| 350 | len - (sizeof(struct bts_action) + |
| 351 | ((struct bts_action *)ptr)->size); |
| 352 | ptr = |
| 353 | ptr + sizeof(struct bts_action) + |
| 354 | ((struct bts_action *)ptr)->size; |
| 355 | } |
| 356 | /* fw download complete */ |
| 357 | release_firmware(kim_gdata->fw_entry); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 358 | return 0; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 359 | } |
| 360 | |
| 361 | /**********************************************************************/ |
| 362 | /* functions called from ST core */ |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 363 | /* function to toggle the GPIO |
| 364 | * needs to know whether the GPIO is active high or active low |
| 365 | */ |
| 366 | void st_kim_chip_toggle(enum proto_type type, enum kim_gpio_state state) |
| 367 | { |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 368 | struct platform_device *kim_pdev; |
| 369 | struct kim_data_s *kim_gdata; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 370 | pr_info(" %s ", __func__); |
| 371 | |
Pavan Savoy | dbd3a87 | 2010-08-19 14:08:51 -0400 | [diff] [blame] | 372 | kim_pdev = st_get_plat_device(0); |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 373 | kim_gdata = dev_get_drvdata(&kim_pdev->dev); |
| 374 | |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 375 | if (kim_gdata->gpios[type] == -1) { |
| 376 | pr_info(" gpio not requested for protocol %s", |
| 377 | protocol_names[type]); |
| 378 | return; |
| 379 | } |
| 380 | switch (type) { |
| 381 | case ST_BT: |
| 382 | /*Do Nothing */ |
| 383 | break; |
| 384 | |
| 385 | case ST_FM: |
| 386 | if (state == KIM_GPIO_ACTIVE) |
| 387 | gpio_set_value(kim_gdata->gpios[ST_FM], GPIO_LOW); |
| 388 | else |
| 389 | gpio_set_value(kim_gdata->gpios[ST_FM], GPIO_HIGH); |
| 390 | break; |
| 391 | |
| 392 | case ST_GPS: |
| 393 | if (state == KIM_GPIO_ACTIVE) |
| 394 | gpio_set_value(kim_gdata->gpios[ST_GPS], GPIO_HIGH); |
| 395 | else |
| 396 | gpio_set_value(kim_gdata->gpios[ST_GPS], GPIO_LOW); |
| 397 | break; |
| 398 | |
| 399 | case ST_MAX: |
| 400 | default: |
| 401 | break; |
| 402 | } |
| 403 | |
| 404 | return; |
| 405 | } |
| 406 | |
| 407 | /* called from ST Core, when REG_IN_PROGRESS (registration in progress) |
| 408 | * can be because of |
| 409 | * 1. response to read local version |
| 410 | * 2. during send/recv's of firmware download |
| 411 | */ |
| 412 | void st_kim_recv(void *disc_data, const unsigned char *data, long count) |
| 413 | { |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 414 | struct st_data_s *st_gdata = (struct st_data_s *)disc_data; |
| 415 | struct kim_data_s *kim_gdata = st_gdata->kim_data; |
| 416 | |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 417 | pr_info(" %s ", __func__); |
| 418 | /* copy to local buffer */ |
| 419 | if (unlikely(data[4] == 0x01 && data[5] == 0x10 && data[0] == 0x04)) { |
| 420 | /* must be the read_ver_cmd */ |
| 421 | memcpy(kim_gdata->resp_buffer, data, count); |
| 422 | complete_all(&kim_gdata->kim_rcvd); |
| 423 | return; |
| 424 | } else { |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 425 | kim_int_recv(kim_gdata, data, count); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 426 | /* either completes or times out */ |
| 427 | } |
| 428 | return; |
| 429 | } |
| 430 | |
| 431 | /* to signal completion of line discipline installation |
| 432 | * called from ST Core, upon tty_open |
| 433 | */ |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 434 | void st_kim_complete(void *kim_data) |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 435 | { |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 436 | struct kim_data_s *kim_gdata = (struct kim_data_s *)kim_data; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 437 | complete(&kim_gdata->ldisc_installed); |
| 438 | } |
| 439 | |
Pavan Savoy | 36b5aee | 2010-07-22 05:32:06 -0500 | [diff] [blame] | 440 | /** |
| 441 | * st_kim_start - called from ST Core upon 1st registration |
| 442 | * This involves toggling the chip enable gpio, reading |
| 443 | * the firmware version from chip, forming the fw file name |
| 444 | * based on the chip version, requesting the fw, parsing it |
| 445 | * and perform download(send/recv). |
| 446 | */ |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 447 | long st_kim_start(void *kim_data) |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 448 | { |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 449 | long err = 0; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 450 | long retry = POR_RETRY_COUNT; |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 451 | struct kim_data_s *kim_gdata = (struct kim_data_s *)kim_data; |
| 452 | |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 453 | pr_info(" %s", __func__); |
| 454 | |
| 455 | do { |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 456 | /* TODO: this is only because rfkill sub-system |
| 457 | * doesn't send events to user-space if the state |
| 458 | * isn't changed |
| 459 | */ |
| 460 | rfkill_set_hw_state(kim_gdata->rfkill[ST_BT], 1); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 461 | /* Configure BT nShutdown to HIGH state */ |
| 462 | gpio_set_value(kim_gdata->gpios[ST_BT], GPIO_LOW); |
| 463 | mdelay(5); /* FIXME: a proper toggle */ |
| 464 | gpio_set_value(kim_gdata->gpios[ST_BT], GPIO_HIGH); |
| 465 | mdelay(100); |
| 466 | /* re-initialize the completion */ |
| 467 | INIT_COMPLETION(kim_gdata->ldisc_installed); |
Naveen Jain | b38fc2d | 2010-06-09 03:45:32 -0500 | [diff] [blame] | 468 | #if 0 /* older way of signalling user-space UIM */ |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 469 | /* send signal to UIM */ |
| 470 | err = kill_pid(find_get_pid(kim_gdata->uim_pid), SIGUSR2, 0); |
| 471 | if (err != 0) { |
| 472 | pr_info(" sending SIGUSR2 to uim failed %ld", err); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 473 | err = -1; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 474 | continue; |
| 475 | } |
Naveen Jain | b38fc2d | 2010-06-09 03:45:32 -0500 | [diff] [blame] | 476 | #endif |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 477 | /* unblock and send event to UIM via /dev/rfkill */ |
| 478 | rfkill_set_hw_state(kim_gdata->rfkill[ST_BT], 0); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 479 | /* wait for ldisc to be installed */ |
| 480 | err = wait_for_completion_timeout(&kim_gdata->ldisc_installed, |
| 481 | msecs_to_jiffies(LDISC_TIME)); |
| 482 | if (!err) { /* timeout */ |
| 483 | pr_err("line disc installation timed out "); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 484 | err = -1; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 485 | continue; |
| 486 | } else { |
| 487 | /* ldisc installed now */ |
| 488 | pr_info(" line discipline installed "); |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 489 | err = download_firmware(kim_gdata); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 490 | if (err != 0) { |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 491 | pr_err("download firmware failed"); |
| 492 | continue; |
| 493 | } else { /* on success don't retry */ |
| 494 | break; |
| 495 | } |
| 496 | } |
| 497 | } while (retry--); |
| 498 | return err; |
| 499 | } |
| 500 | |
Pavan Savoy | 36b5aee | 2010-07-22 05:32:06 -0500 | [diff] [blame] | 501 | /** |
| 502 | * st_kim_stop - called from ST Core, on the last un-registration |
| 503 | * toggle low the chip enable gpio |
| 504 | */ |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 505 | long st_kim_stop(void *kim_data) |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 506 | { |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 507 | long err = 0; |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 508 | struct kim_data_s *kim_gdata = (struct kim_data_s *)kim_data; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 509 | |
| 510 | INIT_COMPLETION(kim_gdata->ldisc_installed); |
Naveen Jain | b38fc2d | 2010-06-09 03:45:32 -0500 | [diff] [blame] | 511 | #if 0 /* older way of signalling user-space UIM */ |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 512 | /* send signal to UIM */ |
| 513 | err = kill_pid(find_get_pid(kim_gdata->uim_pid), SIGUSR2, 1); |
| 514 | if (err != 0) { |
| 515 | pr_err("sending SIGUSR2 to uim failed %ld", err); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 516 | return -1; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 517 | } |
Naveen Jain | b38fc2d | 2010-06-09 03:45:32 -0500 | [diff] [blame] | 518 | #endif |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 519 | /* set BT rfkill to be blocked */ |
| 520 | err = rfkill_set_hw_state(kim_gdata->rfkill[ST_BT], 1); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 521 | |
| 522 | /* wait for ldisc to be un-installed */ |
| 523 | err = wait_for_completion_timeout(&kim_gdata->ldisc_installed, |
| 524 | msecs_to_jiffies(LDISC_TIME)); |
| 525 | if (!err) { /* timeout */ |
| 526 | pr_err(" timed out waiting for ldisc to be un-installed"); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 527 | return -1; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 528 | } |
| 529 | |
| 530 | /* By default configure BT nShutdown to LOW state */ |
| 531 | gpio_set_value(kim_gdata->gpios[ST_BT], GPIO_LOW); |
| 532 | mdelay(1); |
| 533 | gpio_set_value(kim_gdata->gpios[ST_BT], GPIO_HIGH); |
| 534 | mdelay(1); |
| 535 | gpio_set_value(kim_gdata->gpios[ST_BT], GPIO_LOW); |
| 536 | return err; |
| 537 | } |
| 538 | |
| 539 | /**********************************************************************/ |
| 540 | /* functions called from subsystems */ |
Pavan Savoy | c1afac1 | 2010-07-28 02:25:59 -0500 | [diff] [blame] | 541 | /* called when debugfs entry is read from */ |
Naveen Jain | e2a5328 | 2010-06-09 03:45:33 -0500 | [diff] [blame] | 542 | |
Pavan Savoy | c1afac1 | 2010-07-28 02:25:59 -0500 | [diff] [blame] | 543 | static int show_version(struct seq_file *s, void *unused) |
Naveen Jain | e2a5328 | 2010-06-09 03:45:33 -0500 | [diff] [blame] | 544 | { |
Pavan Savoy | c1afac1 | 2010-07-28 02:25:59 -0500 | [diff] [blame] | 545 | struct kim_data_s *kim_gdata = (struct kim_data_s *)s->private; |
| 546 | seq_printf(s, "%04X %d.%d.%d\n", kim_gdata->version.full, |
Naveen Jain | e2a5328 | 2010-06-09 03:45:33 -0500 | [diff] [blame] | 547 | kim_gdata->version.chip, kim_gdata->version.maj_ver, |
| 548 | kim_gdata->version.min_ver); |
Pavan Savoy | c1afac1 | 2010-07-28 02:25:59 -0500 | [diff] [blame] | 549 | return 0; |
Naveen Jain | e2a5328 | 2010-06-09 03:45:33 -0500 | [diff] [blame] | 550 | } |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 551 | |
Pavan Savoy | c1afac1 | 2010-07-28 02:25:59 -0500 | [diff] [blame] | 552 | static int show_list(struct seq_file *s, void *unused) |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 553 | { |
Pavan Savoy | c1afac1 | 2010-07-28 02:25:59 -0500 | [diff] [blame] | 554 | struct kim_data_s *kim_gdata = (struct kim_data_s *)s->private; |
| 555 | kim_st_list_protocols(kim_gdata->core_data, s); |
| 556 | return 0; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 557 | } |
| 558 | |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 559 | /* function called from rfkill subsystem, when someone from |
| 560 | * user space would write 0/1 on the sysfs entry |
| 561 | * /sys/class/rfkill/rfkill0,1,3/state |
| 562 | */ |
| 563 | static int kim_toggle_radio(void *data, bool blocked) |
| 564 | { |
| 565 | enum proto_type type = *((enum proto_type *)data); |
Pavan Savoy | e6d9e64 | 2010-07-22 05:32:05 -0500 | [diff] [blame] | 566 | pr_debug(" %s: %d ", __func__, type); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 567 | |
| 568 | switch (type) { |
| 569 | case ST_BT: |
| 570 | /* do nothing */ |
| 571 | break; |
| 572 | case ST_FM: |
| 573 | case ST_GPS: |
| 574 | if (blocked) |
| 575 | st_kim_chip_toggle(type, KIM_GPIO_INACTIVE); |
| 576 | else |
| 577 | st_kim_chip_toggle(type, KIM_GPIO_ACTIVE); |
| 578 | break; |
| 579 | case ST_MAX: |
| 580 | pr_err(" wrong proto type "); |
| 581 | break; |
| 582 | } |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 583 | return 0; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 584 | } |
| 585 | |
Pavan Savoy | 36b5aee | 2010-07-22 05:32:06 -0500 | [diff] [blame] | 586 | /** |
| 587 | * st_kim_ref - reference the core's data |
| 588 | * This references the per-ST platform device in the arch/xx/ |
| 589 | * board-xx.c file. |
| 590 | * This would enable multiple such platform devices to exist |
| 591 | * on a given platform |
| 592 | */ |
Pavan Savoy | dbd3a87 | 2010-08-19 14:08:51 -0400 | [diff] [blame] | 593 | void st_kim_ref(struct st_data_s **core_data, int id) |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 594 | { |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 595 | struct platform_device *pdev; |
| 596 | struct kim_data_s *kim_gdata; |
| 597 | /* get kim_gdata reference from platform device */ |
Pavan Savoy | dbd3a87 | 2010-08-19 14:08:51 -0400 | [diff] [blame] | 598 | pdev = st_get_plat_device(id); |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 599 | kim_gdata = dev_get_drvdata(&pdev->dev); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 600 | *core_data = kim_gdata->core_data; |
| 601 | } |
| 602 | |
Pavan Savoy | c1afac1 | 2010-07-28 02:25:59 -0500 | [diff] [blame] | 603 | static int kim_version_open(struct inode *i, struct file *f) |
| 604 | { |
| 605 | return single_open(f, show_version, i->i_private); |
| 606 | } |
| 607 | |
| 608 | static int kim_list_open(struct inode *i, struct file *f) |
| 609 | { |
| 610 | return single_open(f, show_list, i->i_private); |
| 611 | } |
| 612 | |
| 613 | static const struct file_operations version_debugfs_fops = { |
| 614 | /* version info */ |
| 615 | .open = kim_version_open, |
| 616 | .read = seq_read, |
| 617 | .llseek = seq_lseek, |
| 618 | .release = single_release, |
| 619 | }; |
| 620 | static const struct file_operations list_debugfs_fops = { |
| 621 | /* protocols info */ |
| 622 | .open = kim_list_open, |
| 623 | .read = seq_read, |
| 624 | .llseek = seq_lseek, |
| 625 | .release = single_release, |
| 626 | }; |
| 627 | |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 628 | /**********************************************************************/ |
| 629 | /* functions called from platform device driver subsystem |
| 630 | * need to have a relevant platform device entry in the platform's |
| 631 | * board-*.c file |
| 632 | */ |
| 633 | |
Pavan Savoy | c1afac1 | 2010-07-28 02:25:59 -0500 | [diff] [blame] | 634 | struct dentry *kim_debugfs_dir; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 635 | static int kim_probe(struct platform_device *pdev) |
| 636 | { |
| 637 | long status; |
| 638 | long proto; |
| 639 | long *gpios = pdev->dev.platform_data; |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 640 | struct kim_data_s *kim_gdata; |
| 641 | |
Pavan Savoy | dfb7ef7 | 2010-09-10 15:58:55 -0400 | [diff] [blame] | 642 | if ((pdev->id != -1) && (pdev->id < MAX_ST_DEVICES)) { |
| 643 | /* multiple devices could exist */ |
| 644 | st_kim_devices[pdev->id] = pdev; |
| 645 | } else { |
| 646 | /* platform's sure about existance of 1 device */ |
| 647 | st_kim_devices[0] = pdev; |
| 648 | } |
| 649 | |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 650 | kim_gdata = kzalloc(sizeof(struct kim_data_s), GFP_ATOMIC); |
| 651 | if (!kim_gdata) { |
| 652 | pr_err("no mem to allocate"); |
| 653 | return -ENOMEM; |
| 654 | } |
| 655 | dev_set_drvdata(&pdev->dev, kim_gdata); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 656 | |
| 657 | status = st_core_init(&kim_gdata->core_data); |
| 658 | if (status != 0) { |
| 659 | pr_err(" ST core init failed"); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 660 | return -1; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 661 | } |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 662 | /* refer to itself */ |
| 663 | kim_gdata->core_data->kim_data = kim_gdata; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 664 | |
| 665 | for (proto = 0; proto < ST_MAX; proto++) { |
| 666 | kim_gdata->gpios[proto] = gpios[proto]; |
| 667 | pr_info(" %ld gpio to be requested", gpios[proto]); |
| 668 | } |
| 669 | |
| 670 | for (proto = 0; (proto < ST_MAX) && (gpios[proto] != -1); proto++) { |
| 671 | /* Claim the Bluetooth/FM/GPIO |
| 672 | * nShutdown gpio from the system |
| 673 | */ |
| 674 | status = gpio_request(gpios[proto], "kim"); |
| 675 | if (unlikely(status)) { |
| 676 | pr_err(" gpio %ld request failed ", gpios[proto]); |
| 677 | proto -= 1; |
| 678 | while (proto >= 0) { |
| 679 | if (gpios[proto] != -1) |
| 680 | gpio_free(gpios[proto]); |
| 681 | } |
| 682 | return status; |
| 683 | } |
| 684 | |
| 685 | /* Configure nShutdown GPIO as output=0 */ |
| 686 | status = |
| 687 | gpio_direction_output(gpios[proto], 0); |
| 688 | if (unlikely(status)) { |
| 689 | pr_err(" unable to configure gpio %ld", |
| 690 | gpios[proto]); |
| 691 | proto -= 1; |
| 692 | while (proto >= 0) { |
| 693 | if (gpios[proto] != -1) |
| 694 | gpio_free(gpios[proto]); |
| 695 | } |
| 696 | return status; |
| 697 | } |
| 698 | } |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 699 | /* get reference of pdev for request_firmware |
| 700 | */ |
| 701 | kim_gdata->kim_pdev = pdev; |
| 702 | init_completion(&kim_gdata->kim_rcvd); |
| 703 | init_completion(&kim_gdata->ldisc_installed); |
Naveen Jain | b38fc2d | 2010-06-09 03:45:32 -0500 | [diff] [blame] | 704 | |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 705 | for (proto = 0; (proto < ST_MAX) && (gpios[proto] != -1); proto++) { |
| 706 | /* TODO: should all types be rfkill_type_bt ? */ |
| 707 | kim_gdata->rf_protos[proto] = proto; |
| 708 | kim_gdata->rfkill[proto] = rfkill_alloc(protocol_names[proto], |
| 709 | &pdev->dev, RFKILL_TYPE_BLUETOOTH, |
| 710 | &kim_rfkill_ops, &kim_gdata->rf_protos[proto]); |
| 711 | if (kim_gdata->rfkill[proto] == NULL) { |
| 712 | pr_err("cannot create rfkill entry for gpio %ld", |
| 713 | gpios[proto]); |
| 714 | continue; |
| 715 | } |
| 716 | /* block upon creation */ |
| 717 | rfkill_init_sw_state(kim_gdata->rfkill[proto], 1); |
| 718 | status = rfkill_register(kim_gdata->rfkill[proto]); |
| 719 | if (unlikely(status)) { |
| 720 | pr_err("rfkill registration failed for gpio %ld", |
| 721 | gpios[proto]); |
| 722 | rfkill_unregister(kim_gdata->rfkill[proto]); |
| 723 | continue; |
| 724 | } |
| 725 | pr_info("rfkill entry created for %ld", gpios[proto]); |
| 726 | } |
Naveen Jain | e2a5328 | 2010-06-09 03:45:33 -0500 | [diff] [blame] | 727 | |
Pavan Savoy | c1afac1 | 2010-07-28 02:25:59 -0500 | [diff] [blame] | 728 | kim_debugfs_dir = debugfs_create_dir("ti-st", NULL); |
| 729 | if (IS_ERR(kim_debugfs_dir)) { |
| 730 | pr_err(" debugfs entries creation failed "); |
| 731 | kim_debugfs_dir = NULL; |
Naveen Jain | e2a5328 | 2010-06-09 03:45:33 -0500 | [diff] [blame] | 732 | return -1; |
| 733 | } |
Pavan Savoy | c1afac1 | 2010-07-28 02:25:59 -0500 | [diff] [blame] | 734 | |
| 735 | debugfs_create_file("version", S_IRUGO, kim_debugfs_dir, |
| 736 | kim_gdata, &version_debugfs_fops); |
| 737 | debugfs_create_file("protocols", S_IRUGO, kim_debugfs_dir, |
| 738 | kim_gdata, &list_debugfs_fops); |
| 739 | pr_info(" debugfs entries created "); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 740 | return 0; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 741 | } |
| 742 | |
| 743 | static int kim_remove(struct platform_device *pdev) |
| 744 | { |
| 745 | /* free the GPIOs requested |
| 746 | */ |
| 747 | long *gpios = pdev->dev.platform_data; |
| 748 | long proto; |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 749 | struct kim_data_s *kim_gdata; |
| 750 | |
| 751 | kim_gdata = dev_get_drvdata(&pdev->dev); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 752 | |
| 753 | for (proto = 0; (proto < ST_MAX) && (gpios[proto] != -1); proto++) { |
| 754 | /* Claim the Bluetooth/FM/GPIO |
| 755 | * nShutdown gpio from the system |
| 756 | */ |
| 757 | gpio_free(gpios[proto]); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 758 | rfkill_unregister(kim_gdata->rfkill[proto]); |
| 759 | rfkill_destroy(kim_gdata->rfkill[proto]); |
| 760 | kim_gdata->rfkill[proto] = NULL; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 761 | } |
| 762 | pr_info("kim: GPIO Freed"); |
Pavan Savoy | c1afac1 | 2010-07-28 02:25:59 -0500 | [diff] [blame] | 763 | debugfs_remove_recursive(kim_debugfs_dir); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 764 | kim_gdata->kim_pdev = NULL; |
| 765 | st_core_exit(kim_gdata->core_data); |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 766 | |
| 767 | kfree(kim_gdata); |
| 768 | kim_gdata = NULL; |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 769 | return 0; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 770 | } |
| 771 | |
| 772 | /**********************************************************************/ |
| 773 | /* entry point for ST KIM module, called in from ST Core */ |
| 774 | |
| 775 | static int __init st_kim_init(void) |
| 776 | { |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 777 | long ret = 0; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 778 | ret = platform_driver_register(&kim_platform_driver); |
| 779 | if (ret != 0) { |
| 780 | pr_err("platform drv registration failed"); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 781 | return -1; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 782 | } |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 783 | return 0; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 784 | } |
| 785 | |
| 786 | static void __exit st_kim_deinit(void) |
| 787 | { |
| 788 | /* the following returns void */ |
| 789 | platform_driver_unregister(&kim_platform_driver); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 790 | } |
| 791 | |
| 792 | |
| 793 | module_init(st_kim_init); |
| 794 | module_exit(st_kim_deinit); |
| 795 | MODULE_AUTHOR("Pavan Savoy <pavan_savoy@ti.com>"); |
| 796 | MODULE_DESCRIPTION("Shared Transport Driver for TI BT/FM/GPS combo chips "); |
| 797 | MODULE_LICENSE("GPL"); |