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 |
Pavan Savoy | a0cc2f3 | 2010-10-06 12:18:14 -0400 | [diff] [blame] | 5 | * Copyright (C) 2009-2010 Texas Instruments |
| 6 | * Author: Pavan Savoy <pavan_savoy@ti.com> |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License version 2 as |
| 10 | * published by the Free Software Foundation. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 20 | * |
| 21 | */ |
| 22 | |
| 23 | #define pr_fmt(fmt) "(stk) :" fmt |
| 24 | #include <linux/platform_device.h> |
| 25 | #include <linux/jiffies.h> |
| 26 | #include <linux/firmware.h> |
| 27 | #include <linux/delay.h> |
| 28 | #include <linux/wait.h> |
| 29 | #include <linux/gpio.h> |
Pavan Savoy | c1afac1 | 2010-07-28 02:25:59 -0500 | [diff] [blame] | 30 | #include <linux/debugfs.h> |
| 31 | #include <linux/seq_file.h> |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 32 | #include <linux/sched.h> |
Pavan Savoy | 83ef41f | 2010-09-17 12:06:11 -0400 | [diff] [blame] | 33 | #include <linux/rfkill.h> |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 34 | |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 35 | /* understand BT events for fw response */ |
| 36 | #include <net/bluetooth/bluetooth.h> |
| 37 | #include <net/bluetooth/hci_core.h> |
| 38 | #include <net/bluetooth/hci.h> |
| 39 | |
Pavan Savoy | e555867 | 2010-09-30 16:13:30 -0400 | [diff] [blame] | 40 | #include <linux/ti_wilink_st.h> |
Pavan Savoy | 83ef41f | 2010-09-17 12:06:11 -0400 | [diff] [blame] | 41 | |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 42 | |
| 43 | static int kim_probe(struct platform_device *pdev); |
| 44 | static int kim_remove(struct platform_device *pdev); |
| 45 | |
| 46 | /* KIM platform device driver structure */ |
| 47 | static struct platform_driver kim_platform_driver = { |
| 48 | .probe = kim_probe, |
| 49 | .remove = kim_remove, |
| 50 | /* TODO: ST driver power management during suspend/resume ? |
| 51 | */ |
| 52 | #if 0 |
| 53 | .suspend = kim_suspend, |
| 54 | .resume = kim_resume, |
| 55 | #endif |
| 56 | .driver = { |
| 57 | .name = "kim", |
| 58 | .owner = THIS_MODULE, |
| 59 | }, |
| 60 | }; |
| 61 | |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 62 | static int kim_toggle_radio(void*, bool); |
| 63 | static const struct rfkill_ops kim_rfkill_ops = { |
| 64 | .set_block = kim_toggle_radio, |
| 65 | }; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 66 | |
| 67 | /* strings to be used for rfkill entries and by |
| 68 | * ST Core to be used for sysfs debug entry |
| 69 | */ |
| 70 | #define PROTO_ENTRY(type, name) name |
| 71 | const unsigned char *protocol_names[] = { |
| 72 | PROTO_ENTRY(ST_BT, "Bluetooth"), |
| 73 | PROTO_ENTRY(ST_FM, "FM"), |
| 74 | PROTO_ENTRY(ST_GPS, "GPS"), |
| 75 | }; |
| 76 | |
Pavan Savoy | dbd3a87 | 2010-08-19 14:08:51 -0400 | [diff] [blame] | 77 | #define MAX_ST_DEVICES 3 /* Imagine 1 on each UART for now */ |
Pavan Savoy | 73f12e8 | 2010-10-12 16:27:38 -0400 | [diff] [blame^] | 78 | static struct platform_device *st_kim_devices[MAX_ST_DEVICES]; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 79 | |
| 80 | /**********************************************************************/ |
| 81 | /* internal functions */ |
| 82 | |
Pavan Savoy | 36b5aee | 2010-07-22 05:32:06 -0500 | [diff] [blame] | 83 | /** |
Pavan Savoy | dbd3a87 | 2010-08-19 14:08:51 -0400 | [diff] [blame] | 84 | * st_get_plat_device - |
| 85 | * function which returns the reference to the platform device |
| 86 | * requested by id. As of now only 1 such device exists (id=0) |
| 87 | * the context requesting for reference can get the id to be |
| 88 | * requested by a. The protocol driver which is registering or |
| 89 | * b. the tty device which is opened. |
| 90 | */ |
| 91 | static struct platform_device *st_get_plat_device(int id) |
| 92 | { |
| 93 | return st_kim_devices[id]; |
| 94 | } |
| 95 | |
| 96 | /** |
Pavan Savoy | 36b5aee | 2010-07-22 05:32:06 -0500 | [diff] [blame] | 97 | * validate_firmware_response - |
| 98 | * function to return whether the firmware response was proper |
| 99 | * in case of error don't complete so that waiting for proper |
| 100 | * response times out |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 101 | */ |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 102 | void validate_firmware_response(struct kim_data_s *kim_gdata) |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 103 | { |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 104 | struct sk_buff *skb = kim_gdata->rx_skb; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 105 | if (unlikely(skb->data[5] != 0)) { |
| 106 | pr_err("no proper response during fw download"); |
| 107 | pr_err("data6 %x", skb->data[5]); |
| 108 | return; /* keep waiting for the proper response */ |
| 109 | } |
| 110 | /* becos of all the script being downloaded */ |
| 111 | complete_all(&kim_gdata->kim_rcvd); |
| 112 | kfree_skb(skb); |
| 113 | } |
| 114 | |
| 115 | /* check for data len received inside kim_int_recv |
| 116 | * most often hit the last case to update state to waiting for data |
| 117 | */ |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 118 | 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] | 119 | { |
| 120 | register int room = skb_tailroom(kim_gdata->rx_skb); |
| 121 | |
Pavan Savoy | e6d9e64 | 2010-07-22 05:32:05 -0500 | [diff] [blame] | 122 | pr_debug("len %d room %d", len, room); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 123 | |
| 124 | if (!len) { |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 125 | validate_firmware_response(kim_gdata); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 126 | } else if (len > room) { |
| 127 | /* Received packet's payload length is larger. |
| 128 | * We can't accommodate it in created skb. |
| 129 | */ |
| 130 | pr_err("Data length is too large len %d room %d", len, |
| 131 | room); |
| 132 | kfree_skb(kim_gdata->rx_skb); |
| 133 | } else { |
| 134 | /* Packet header has non-zero payload length and |
| 135 | * we have enough space in created skb. Lets read |
| 136 | * payload data */ |
| 137 | kim_gdata->rx_state = ST_BT_W4_DATA; |
| 138 | kim_gdata->rx_count = len; |
| 139 | return len; |
| 140 | } |
| 141 | |
| 142 | /* Change ST LL state to continue to process next |
| 143 | * packet */ |
| 144 | kim_gdata->rx_state = ST_W4_PACKET_TYPE; |
| 145 | kim_gdata->rx_skb = NULL; |
| 146 | kim_gdata->rx_count = 0; |
| 147 | |
| 148 | return 0; |
| 149 | } |
| 150 | |
Pavan Savoy | 36b5aee | 2010-07-22 05:32:06 -0500 | [diff] [blame] | 151 | /** |
| 152 | * kim_int_recv - receive function called during firmware download |
| 153 | * firmware download responses on different UART drivers |
| 154 | * have been observed to come in bursts of different |
| 155 | * tty_receive and hence the logic |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 156 | */ |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 157 | void kim_int_recv(struct kim_data_s *kim_gdata, |
| 158 | const unsigned char *data, long count) |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 159 | { |
Pavan Savoy | 73f12e8 | 2010-10-12 16:27:38 -0400 | [diff] [blame^] | 160 | const unsigned char *ptr; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 161 | struct hci_event_hdr *eh; |
Pavan Savoy | 73f12e8 | 2010-10-12 16:27:38 -0400 | [diff] [blame^] | 162 | int len = 0, type = 0; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 163 | |
Pavan Savoy | e6d9e64 | 2010-07-22 05:32:05 -0500 | [diff] [blame] | 164 | pr_debug("%s", __func__); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 165 | /* Decode received bytes here */ |
Pavan Savoy | 73f12e8 | 2010-10-12 16:27:38 -0400 | [diff] [blame^] | 166 | ptr = data; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 167 | if (unlikely(ptr == NULL)) { |
| 168 | pr_err(" received null from TTY "); |
| 169 | return; |
| 170 | } |
Pavan Savoy | 73f12e8 | 2010-10-12 16:27:38 -0400 | [diff] [blame^] | 171 | |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 172 | while (count) { |
| 173 | if (kim_gdata->rx_count) { |
| 174 | len = min_t(unsigned int, kim_gdata->rx_count, count); |
| 175 | memcpy(skb_put(kim_gdata->rx_skb, len), ptr, len); |
| 176 | kim_gdata->rx_count -= len; |
| 177 | count -= len; |
| 178 | ptr += len; |
| 179 | |
| 180 | if (kim_gdata->rx_count) |
| 181 | continue; |
| 182 | |
| 183 | /* Check ST RX state machine , where are we? */ |
| 184 | switch (kim_gdata->rx_state) { |
| 185 | /* Waiting for complete packet ? */ |
| 186 | case ST_BT_W4_DATA: |
Pavan Savoy | e6d9e64 | 2010-07-22 05:32:05 -0500 | [diff] [blame] | 187 | pr_debug("Complete pkt received"); |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 188 | validate_firmware_response(kim_gdata); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 189 | kim_gdata->rx_state = ST_W4_PACKET_TYPE; |
| 190 | kim_gdata->rx_skb = NULL; |
| 191 | continue; |
| 192 | /* Waiting for Bluetooth event header ? */ |
| 193 | case ST_BT_W4_EVENT_HDR: |
| 194 | eh = (struct hci_event_hdr *)kim_gdata-> |
| 195 | rx_skb->data; |
Pavan Savoy | e6d9e64 | 2010-07-22 05:32:05 -0500 | [diff] [blame] | 196 | pr_debug("Event header: evt 0x%2.2x" |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 197 | "plen %d", eh->evt, eh->plen); |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 198 | kim_check_data_len(kim_gdata, eh->plen); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 199 | continue; |
| 200 | } /* end of switch */ |
| 201 | } /* end of if rx_state */ |
| 202 | switch (*ptr) { |
| 203 | /* Bluetooth event packet? */ |
| 204 | case HCI_EVENT_PKT: |
| 205 | pr_info("Event packet"); |
| 206 | kim_gdata->rx_state = ST_BT_W4_EVENT_HDR; |
| 207 | kim_gdata->rx_count = HCI_EVENT_HDR_SIZE; |
| 208 | type = HCI_EVENT_PKT; |
| 209 | break; |
| 210 | default: |
| 211 | pr_info("unknown packet"); |
| 212 | ptr++; |
| 213 | count--; |
| 214 | continue; |
Pavan Savoy | 36b5aee | 2010-07-22 05:32:06 -0500 | [diff] [blame] | 215 | } |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 216 | ptr++; |
| 217 | count--; |
| 218 | kim_gdata->rx_skb = |
| 219 | bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC); |
| 220 | if (!kim_gdata->rx_skb) { |
| 221 | pr_err("can't allocate mem for new packet"); |
| 222 | kim_gdata->rx_state = ST_W4_PACKET_TYPE; |
| 223 | kim_gdata->rx_count = 0; |
| 224 | return; |
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 | bt_cb(kim_gdata->rx_skb)->pkt_type = type; |
Pavan Savoy | 36b5aee | 2010-07-22 05:32:06 -0500 | [diff] [blame] | 227 | } |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 228 | pr_info("done %s", __func__); |
| 229 | return; |
| 230 | } |
| 231 | |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 232 | 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] | 233 | { |
| 234 | unsigned short version = 0, chip = 0, min_ver = 0, maj_ver = 0; |
Pavan Savoy | 73f12e8 | 2010-10-12 16:27:38 -0400 | [diff] [blame^] | 235 | const char read_ver_cmd[] = { 0x01, 0x01, 0x10, 0x00 }; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 236 | |
Pavan Savoy | e6d9e64 | 2010-07-22 05:32:05 -0500 | [diff] [blame] | 237 | pr_debug("%s", __func__); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 238 | |
| 239 | INIT_COMPLETION(kim_gdata->kim_rcvd); |
| 240 | if (4 != st_int_write(kim_gdata->core_data, read_ver_cmd, 4)) { |
| 241 | pr_err("kim: couldn't write 4 bytes"); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 242 | return -1; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 243 | } |
| 244 | |
| 245 | if (!wait_for_completion_timeout |
| 246 | (&kim_gdata->kim_rcvd, msecs_to_jiffies(CMD_RESP_TIME))) { |
| 247 | pr_err(" waiting for ver info- timed out "); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 248 | return -1; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 249 | } |
| 250 | |
| 251 | version = |
Naveen Jain | e2a5328 | 2010-06-09 03:45:33 -0500 | [diff] [blame] | 252 | MAKEWORD(kim_gdata->resp_buffer[13], |
| 253 | kim_gdata->resp_buffer[14]); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 254 | chip = (version & 0x7C00) >> 10; |
| 255 | min_ver = (version & 0x007F); |
| 256 | maj_ver = (version & 0x0380) >> 7; |
| 257 | |
| 258 | if (version & 0x8000) |
| 259 | maj_ver |= 0x0008; |
| 260 | |
| 261 | 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] | 262 | |
| 263 | /* to be accessed later via sysfs entry */ |
| 264 | kim_gdata->version.full = version; |
| 265 | kim_gdata->version.chip = chip; |
| 266 | kim_gdata->version.maj_ver = maj_ver; |
| 267 | kim_gdata->version.min_ver = min_ver; |
| 268 | |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 269 | pr_info("%s", bts_scr_name); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 270 | return 0; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 271 | } |
| 272 | |
Pavan Savoy | 36b5aee | 2010-07-22 05:32:06 -0500 | [diff] [blame] | 273 | /** |
| 274 | * download_firmware - |
| 275 | * internal function which parses through the .bts firmware |
| 276 | * script file intreprets SEND, DELAY actions only as of now |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 277 | */ |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 278 | static long download_firmware(struct kim_data_s *kim_gdata) |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 279 | { |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 280 | long err = 0; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 281 | long len = 0; |
Pavan Savoy | 73f12e8 | 2010-10-12 16:27:38 -0400 | [diff] [blame^] | 282 | unsigned char *ptr = NULL; |
| 283 | unsigned char *action_ptr = NULL; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 284 | unsigned char bts_scr_name[30] = { 0 }; /* 30 char long bts scr name? */ |
| 285 | |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 286 | err = read_local_version(kim_gdata, bts_scr_name); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 287 | if (err != 0) { |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 288 | pr_err("kim: failed to read local ver"); |
| 289 | return err; |
| 290 | } |
| 291 | err = |
| 292 | request_firmware(&kim_gdata->fw_entry, bts_scr_name, |
| 293 | &kim_gdata->kim_pdev->dev); |
| 294 | if (unlikely((err != 0) || (kim_gdata->fw_entry->data == NULL) || |
| 295 | (kim_gdata->fw_entry->size == 0))) { |
| 296 | pr_err(" request_firmware failed(errno %ld) for %s", err, |
| 297 | bts_scr_name); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 298 | return -1; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 299 | } |
| 300 | ptr = (void *)kim_gdata->fw_entry->data; |
| 301 | len = kim_gdata->fw_entry->size; |
| 302 | /* bts_header to remove out magic number and |
| 303 | * version |
| 304 | */ |
| 305 | ptr += sizeof(struct bts_header); |
| 306 | len -= sizeof(struct bts_header); |
| 307 | |
| 308 | while (len > 0 && ptr) { |
Pavan Savoy | e6d9e64 | 2010-07-22 05:32:05 -0500 | [diff] [blame] | 309 | pr_debug(" action size %d, type %d ", |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 310 | ((struct bts_action *)ptr)->size, |
| 311 | ((struct bts_action *)ptr)->type); |
| 312 | |
| 313 | switch (((struct bts_action *)ptr)->type) { |
| 314 | case ACTION_SEND_COMMAND: /* action send */ |
| 315 | action_ptr = &(((struct bts_action *)ptr)->data[0]); |
| 316 | if (unlikely |
| 317 | (((struct hci_command *)action_ptr)->opcode == |
| 318 | 0xFF36)) { |
| 319 | /* ignore remote change |
| 320 | * baud rate HCI VS command */ |
| 321 | pr_err |
Pavan Savoy | e6d9e64 | 2010-07-22 05:32:05 -0500 | [diff] [blame] | 322 | (" change remote baud" |
| 323 | " rate command in firmware"); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 324 | break; |
| 325 | } |
| 326 | |
| 327 | INIT_COMPLETION(kim_gdata->kim_rcvd); |
| 328 | err = st_int_write(kim_gdata->core_data, |
| 329 | ((struct bts_action_send *)action_ptr)->data, |
| 330 | ((struct bts_action *)ptr)->size); |
| 331 | if (unlikely(err < 0)) { |
| 332 | release_firmware(kim_gdata->fw_entry); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 333 | return -1; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 334 | } |
| 335 | if (!wait_for_completion_timeout |
| 336 | (&kim_gdata->kim_rcvd, |
| 337 | msecs_to_jiffies(CMD_RESP_TIME))) { |
| 338 | pr_err |
| 339 | (" response timeout during fw download "); |
| 340 | /* timed out */ |
| 341 | release_firmware(kim_gdata->fw_entry); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 342 | return -1; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 343 | } |
| 344 | break; |
| 345 | case ACTION_DELAY: /* sleep */ |
| 346 | pr_info("sleep command in scr"); |
| 347 | action_ptr = &(((struct bts_action *)ptr)->data[0]); |
| 348 | mdelay(((struct bts_action_delay *)action_ptr)->msec); |
| 349 | break; |
| 350 | } |
| 351 | len = |
| 352 | len - (sizeof(struct bts_action) + |
| 353 | ((struct bts_action *)ptr)->size); |
| 354 | ptr = |
| 355 | ptr + sizeof(struct bts_action) + |
| 356 | ((struct bts_action *)ptr)->size; |
| 357 | } |
| 358 | /* fw download complete */ |
| 359 | release_firmware(kim_gdata->fw_entry); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 360 | return 0; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 361 | } |
| 362 | |
| 363 | /**********************************************************************/ |
| 364 | /* functions called from ST core */ |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 365 | /* function to toggle the GPIO |
| 366 | * needs to know whether the GPIO is active high or active low |
| 367 | */ |
| 368 | void st_kim_chip_toggle(enum proto_type type, enum kim_gpio_state state) |
| 369 | { |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 370 | struct platform_device *kim_pdev; |
| 371 | struct kim_data_s *kim_gdata; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 372 | pr_info(" %s ", __func__); |
| 373 | |
Pavan Savoy | dbd3a87 | 2010-08-19 14:08:51 -0400 | [diff] [blame] | 374 | kim_pdev = st_get_plat_device(0); |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 375 | kim_gdata = dev_get_drvdata(&kim_pdev->dev); |
| 376 | |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 377 | if (kim_gdata->gpios[type] == -1) { |
| 378 | pr_info(" gpio not requested for protocol %s", |
| 379 | protocol_names[type]); |
| 380 | return; |
| 381 | } |
| 382 | switch (type) { |
| 383 | case ST_BT: |
| 384 | /*Do Nothing */ |
| 385 | break; |
| 386 | |
| 387 | case ST_FM: |
| 388 | if (state == KIM_GPIO_ACTIVE) |
| 389 | gpio_set_value(kim_gdata->gpios[ST_FM], GPIO_LOW); |
| 390 | else |
| 391 | gpio_set_value(kim_gdata->gpios[ST_FM], GPIO_HIGH); |
| 392 | break; |
| 393 | |
| 394 | case ST_GPS: |
| 395 | if (state == KIM_GPIO_ACTIVE) |
| 396 | gpio_set_value(kim_gdata->gpios[ST_GPS], GPIO_HIGH); |
| 397 | else |
| 398 | gpio_set_value(kim_gdata->gpios[ST_GPS], GPIO_LOW); |
| 399 | break; |
| 400 | |
| 401 | case ST_MAX: |
| 402 | default: |
| 403 | break; |
| 404 | } |
| 405 | |
| 406 | return; |
| 407 | } |
| 408 | |
| 409 | /* called from ST Core, when REG_IN_PROGRESS (registration in progress) |
| 410 | * can be because of |
| 411 | * 1. response to read local version |
| 412 | * 2. during send/recv's of firmware download |
| 413 | */ |
| 414 | void st_kim_recv(void *disc_data, const unsigned char *data, long count) |
| 415 | { |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 416 | struct st_data_s *st_gdata = (struct st_data_s *)disc_data; |
| 417 | struct kim_data_s *kim_gdata = st_gdata->kim_data; |
| 418 | |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 419 | pr_info(" %s ", __func__); |
| 420 | /* copy to local buffer */ |
| 421 | if (unlikely(data[4] == 0x01 && data[5] == 0x10 && data[0] == 0x04)) { |
| 422 | /* must be the read_ver_cmd */ |
| 423 | memcpy(kim_gdata->resp_buffer, data, count); |
| 424 | complete_all(&kim_gdata->kim_rcvd); |
| 425 | return; |
| 426 | } else { |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 427 | kim_int_recv(kim_gdata, data, count); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 428 | /* either completes or times out */ |
| 429 | } |
| 430 | return; |
| 431 | } |
| 432 | |
| 433 | /* to signal completion of line discipline installation |
| 434 | * called from ST Core, upon tty_open |
| 435 | */ |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 436 | void st_kim_complete(void *kim_data) |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 437 | { |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 438 | struct kim_data_s *kim_gdata = (struct kim_data_s *)kim_data; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 439 | complete(&kim_gdata->ldisc_installed); |
| 440 | } |
| 441 | |
Pavan Savoy | 36b5aee | 2010-07-22 05:32:06 -0500 | [diff] [blame] | 442 | /** |
| 443 | * st_kim_start - called from ST Core upon 1st registration |
| 444 | * This involves toggling the chip enable gpio, reading |
| 445 | * the firmware version from chip, forming the fw file name |
| 446 | * based on the chip version, requesting the fw, parsing it |
| 447 | * and perform download(send/recv). |
| 448 | */ |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 449 | long st_kim_start(void *kim_data) |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 450 | { |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 451 | long err = 0; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 452 | long retry = POR_RETRY_COUNT; |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 453 | struct kim_data_s *kim_gdata = (struct kim_data_s *)kim_data; |
| 454 | |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 455 | pr_info(" %s", __func__); |
| 456 | |
| 457 | do { |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 458 | /* TODO: this is only because rfkill sub-system |
| 459 | * doesn't send events to user-space if the state |
| 460 | * isn't changed |
| 461 | */ |
| 462 | rfkill_set_hw_state(kim_gdata->rfkill[ST_BT], 1); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 463 | /* Configure BT nShutdown to HIGH state */ |
| 464 | gpio_set_value(kim_gdata->gpios[ST_BT], GPIO_LOW); |
| 465 | mdelay(5); /* FIXME: a proper toggle */ |
| 466 | gpio_set_value(kim_gdata->gpios[ST_BT], GPIO_HIGH); |
| 467 | mdelay(100); |
| 468 | /* re-initialize the completion */ |
| 469 | INIT_COMPLETION(kim_gdata->ldisc_installed); |
Naveen Jain | b38fc2d | 2010-06-09 03:45:32 -0500 | [diff] [blame] | 470 | #if 0 /* older way of signalling user-space UIM */ |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 471 | /* send signal to UIM */ |
| 472 | err = kill_pid(find_get_pid(kim_gdata->uim_pid), SIGUSR2, 0); |
| 473 | if (err != 0) { |
| 474 | pr_info(" sending SIGUSR2 to uim failed %ld", err); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 475 | err = -1; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 476 | continue; |
| 477 | } |
Naveen Jain | b38fc2d | 2010-06-09 03:45:32 -0500 | [diff] [blame] | 478 | #endif |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 479 | /* unblock and send event to UIM via /dev/rfkill */ |
| 480 | rfkill_set_hw_state(kim_gdata->rfkill[ST_BT], 0); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 481 | /* wait for ldisc to be installed */ |
| 482 | err = wait_for_completion_timeout(&kim_gdata->ldisc_installed, |
| 483 | msecs_to_jiffies(LDISC_TIME)); |
| 484 | if (!err) { /* timeout */ |
| 485 | pr_err("line disc installation timed out "); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 486 | err = -1; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 487 | continue; |
| 488 | } else { |
| 489 | /* ldisc installed now */ |
| 490 | pr_info(" line discipline installed "); |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 491 | err = download_firmware(kim_gdata); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 492 | if (err != 0) { |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 493 | pr_err("download firmware failed"); |
| 494 | continue; |
| 495 | } else { /* on success don't retry */ |
| 496 | break; |
| 497 | } |
| 498 | } |
| 499 | } while (retry--); |
| 500 | return err; |
| 501 | } |
| 502 | |
Pavan Savoy | 36b5aee | 2010-07-22 05:32:06 -0500 | [diff] [blame] | 503 | /** |
| 504 | * st_kim_stop - called from ST Core, on the last un-registration |
| 505 | * toggle low the chip enable gpio |
| 506 | */ |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 507 | long st_kim_stop(void *kim_data) |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 508 | { |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 509 | long err = 0; |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 510 | struct kim_data_s *kim_gdata = (struct kim_data_s *)kim_data; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 511 | |
| 512 | INIT_COMPLETION(kim_gdata->ldisc_installed); |
Naveen Jain | b38fc2d | 2010-06-09 03:45:32 -0500 | [diff] [blame] | 513 | #if 0 /* older way of signalling user-space UIM */ |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 514 | /* send signal to UIM */ |
| 515 | err = kill_pid(find_get_pid(kim_gdata->uim_pid), SIGUSR2, 1); |
| 516 | if (err != 0) { |
| 517 | pr_err("sending SIGUSR2 to uim failed %ld", err); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 518 | return -1; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 519 | } |
Naveen Jain | b38fc2d | 2010-06-09 03:45:32 -0500 | [diff] [blame] | 520 | #endif |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 521 | /* set BT rfkill to be blocked */ |
| 522 | err = rfkill_set_hw_state(kim_gdata->rfkill[ST_BT], 1); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 523 | |
| 524 | /* wait for ldisc to be un-installed */ |
| 525 | err = wait_for_completion_timeout(&kim_gdata->ldisc_installed, |
| 526 | msecs_to_jiffies(LDISC_TIME)); |
| 527 | if (!err) { /* timeout */ |
| 528 | pr_err(" timed out waiting for ldisc to be un-installed"); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 529 | return -1; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 530 | } |
| 531 | |
| 532 | /* By default configure BT nShutdown to LOW state */ |
| 533 | gpio_set_value(kim_gdata->gpios[ST_BT], GPIO_LOW); |
| 534 | mdelay(1); |
| 535 | gpio_set_value(kim_gdata->gpios[ST_BT], GPIO_HIGH); |
| 536 | mdelay(1); |
| 537 | gpio_set_value(kim_gdata->gpios[ST_BT], GPIO_LOW); |
| 538 | return err; |
| 539 | } |
| 540 | |
| 541 | /**********************************************************************/ |
| 542 | /* functions called from subsystems */ |
Pavan Savoy | c1afac1 | 2010-07-28 02:25:59 -0500 | [diff] [blame] | 543 | /* called when debugfs entry is read from */ |
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 | static int show_version(struct seq_file *s, void *unused) |
Naveen Jain | e2a5328 | 2010-06-09 03:45:33 -0500 | [diff] [blame] | 546 | { |
Pavan Savoy | c1afac1 | 2010-07-28 02:25:59 -0500 | [diff] [blame] | 547 | struct kim_data_s *kim_gdata = (struct kim_data_s *)s->private; |
| 548 | seq_printf(s, "%04X %d.%d.%d\n", kim_gdata->version.full, |
Naveen Jain | e2a5328 | 2010-06-09 03:45:33 -0500 | [diff] [blame] | 549 | kim_gdata->version.chip, kim_gdata->version.maj_ver, |
| 550 | kim_gdata->version.min_ver); |
Pavan Savoy | c1afac1 | 2010-07-28 02:25:59 -0500 | [diff] [blame] | 551 | return 0; |
Naveen Jain | e2a5328 | 2010-06-09 03:45:33 -0500 | [diff] [blame] | 552 | } |
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 | static int show_list(struct seq_file *s, void *unused) |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 555 | { |
Pavan Savoy | c1afac1 | 2010-07-28 02:25:59 -0500 | [diff] [blame] | 556 | struct kim_data_s *kim_gdata = (struct kim_data_s *)s->private; |
| 557 | kim_st_list_protocols(kim_gdata->core_data, s); |
| 558 | return 0; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 559 | } |
| 560 | |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 561 | /* function called from rfkill subsystem, when someone from |
| 562 | * user space would write 0/1 on the sysfs entry |
| 563 | * /sys/class/rfkill/rfkill0,1,3/state |
| 564 | */ |
| 565 | static int kim_toggle_radio(void *data, bool blocked) |
| 566 | { |
| 567 | enum proto_type type = *((enum proto_type *)data); |
Pavan Savoy | e6d9e64 | 2010-07-22 05:32:05 -0500 | [diff] [blame] | 568 | pr_debug(" %s: %d ", __func__, type); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 569 | |
| 570 | switch (type) { |
| 571 | case ST_BT: |
| 572 | /* do nothing */ |
| 573 | break; |
| 574 | case ST_FM: |
| 575 | case ST_GPS: |
| 576 | if (blocked) |
| 577 | st_kim_chip_toggle(type, KIM_GPIO_INACTIVE); |
| 578 | else |
| 579 | st_kim_chip_toggle(type, KIM_GPIO_ACTIVE); |
| 580 | break; |
| 581 | case ST_MAX: |
| 582 | pr_err(" wrong proto type "); |
| 583 | break; |
| 584 | } |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 585 | return 0; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 586 | } |
| 587 | |
Pavan Savoy | 36b5aee | 2010-07-22 05:32:06 -0500 | [diff] [blame] | 588 | /** |
| 589 | * st_kim_ref - reference the core's data |
| 590 | * This references the per-ST platform device in the arch/xx/ |
| 591 | * board-xx.c file. |
| 592 | * This would enable multiple such platform devices to exist |
| 593 | * on a given platform |
| 594 | */ |
Pavan Savoy | dbd3a87 | 2010-08-19 14:08:51 -0400 | [diff] [blame] | 595 | void st_kim_ref(struct st_data_s **core_data, int id) |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 596 | { |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 597 | struct platform_device *pdev; |
| 598 | struct kim_data_s *kim_gdata; |
| 599 | /* get kim_gdata reference from platform device */ |
Pavan Savoy | dbd3a87 | 2010-08-19 14:08:51 -0400 | [diff] [blame] | 600 | pdev = st_get_plat_device(id); |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 601 | kim_gdata = dev_get_drvdata(&pdev->dev); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 602 | *core_data = kim_gdata->core_data; |
| 603 | } |
| 604 | |
Pavan Savoy | c1afac1 | 2010-07-28 02:25:59 -0500 | [diff] [blame] | 605 | static int kim_version_open(struct inode *i, struct file *f) |
| 606 | { |
| 607 | return single_open(f, show_version, i->i_private); |
| 608 | } |
| 609 | |
| 610 | static int kim_list_open(struct inode *i, struct file *f) |
| 611 | { |
| 612 | return single_open(f, show_list, i->i_private); |
| 613 | } |
| 614 | |
| 615 | static const struct file_operations version_debugfs_fops = { |
| 616 | /* version info */ |
| 617 | .open = kim_version_open, |
| 618 | .read = seq_read, |
| 619 | .llseek = seq_lseek, |
| 620 | .release = single_release, |
| 621 | }; |
| 622 | static const struct file_operations list_debugfs_fops = { |
| 623 | /* protocols info */ |
| 624 | .open = kim_list_open, |
| 625 | .read = seq_read, |
| 626 | .llseek = seq_lseek, |
| 627 | .release = single_release, |
| 628 | }; |
| 629 | |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 630 | /**********************************************************************/ |
| 631 | /* functions called from platform device driver subsystem |
| 632 | * need to have a relevant platform device entry in the platform's |
| 633 | * board-*.c file |
| 634 | */ |
| 635 | |
Pavan Savoy | c1afac1 | 2010-07-28 02:25:59 -0500 | [diff] [blame] | 636 | struct dentry *kim_debugfs_dir; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 637 | static int kim_probe(struct platform_device *pdev) |
| 638 | { |
| 639 | long status; |
| 640 | long proto; |
| 641 | long *gpios = pdev->dev.platform_data; |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 642 | struct kim_data_s *kim_gdata; |
| 643 | |
Pavan Savoy | dfb7ef7 | 2010-09-10 15:58:55 -0400 | [diff] [blame] | 644 | if ((pdev->id != -1) && (pdev->id < MAX_ST_DEVICES)) { |
| 645 | /* multiple devices could exist */ |
| 646 | st_kim_devices[pdev->id] = pdev; |
| 647 | } else { |
| 648 | /* platform's sure about existance of 1 device */ |
| 649 | st_kim_devices[0] = pdev; |
| 650 | } |
| 651 | |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 652 | kim_gdata = kzalloc(sizeof(struct kim_data_s), GFP_ATOMIC); |
| 653 | if (!kim_gdata) { |
| 654 | pr_err("no mem to allocate"); |
| 655 | return -ENOMEM; |
| 656 | } |
| 657 | dev_set_drvdata(&pdev->dev, kim_gdata); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 658 | |
| 659 | status = st_core_init(&kim_gdata->core_data); |
| 660 | if (status != 0) { |
| 661 | pr_err(" ST core init failed"); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 662 | return -1; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 663 | } |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 664 | /* refer to itself */ |
| 665 | kim_gdata->core_data->kim_data = kim_gdata; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 666 | |
| 667 | for (proto = 0; proto < ST_MAX; proto++) { |
| 668 | kim_gdata->gpios[proto] = gpios[proto]; |
| 669 | pr_info(" %ld gpio to be requested", gpios[proto]); |
| 670 | } |
| 671 | |
| 672 | for (proto = 0; (proto < ST_MAX) && (gpios[proto] != -1); proto++) { |
| 673 | /* Claim the Bluetooth/FM/GPIO |
| 674 | * nShutdown gpio from the system |
| 675 | */ |
| 676 | status = gpio_request(gpios[proto], "kim"); |
| 677 | if (unlikely(status)) { |
| 678 | pr_err(" gpio %ld request failed ", gpios[proto]); |
| 679 | proto -= 1; |
| 680 | while (proto >= 0) { |
| 681 | if (gpios[proto] != -1) |
| 682 | gpio_free(gpios[proto]); |
| 683 | } |
| 684 | return status; |
| 685 | } |
| 686 | |
| 687 | /* Configure nShutdown GPIO as output=0 */ |
| 688 | status = |
| 689 | gpio_direction_output(gpios[proto], 0); |
| 690 | if (unlikely(status)) { |
| 691 | pr_err(" unable to configure gpio %ld", |
| 692 | gpios[proto]); |
| 693 | proto -= 1; |
| 694 | while (proto >= 0) { |
| 695 | if (gpios[proto] != -1) |
| 696 | gpio_free(gpios[proto]); |
| 697 | } |
| 698 | return status; |
| 699 | } |
| 700 | } |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 701 | /* get reference of pdev for request_firmware |
| 702 | */ |
| 703 | kim_gdata->kim_pdev = pdev; |
| 704 | init_completion(&kim_gdata->kim_rcvd); |
| 705 | init_completion(&kim_gdata->ldisc_installed); |
Naveen Jain | b38fc2d | 2010-06-09 03:45:32 -0500 | [diff] [blame] | 706 | |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 707 | for (proto = 0; (proto < ST_MAX) && (gpios[proto] != -1); proto++) { |
| 708 | /* TODO: should all types be rfkill_type_bt ? */ |
| 709 | kim_gdata->rf_protos[proto] = proto; |
| 710 | kim_gdata->rfkill[proto] = rfkill_alloc(protocol_names[proto], |
| 711 | &pdev->dev, RFKILL_TYPE_BLUETOOTH, |
| 712 | &kim_rfkill_ops, &kim_gdata->rf_protos[proto]); |
| 713 | if (kim_gdata->rfkill[proto] == NULL) { |
| 714 | pr_err("cannot create rfkill entry for gpio %ld", |
| 715 | gpios[proto]); |
| 716 | continue; |
| 717 | } |
| 718 | /* block upon creation */ |
| 719 | rfkill_init_sw_state(kim_gdata->rfkill[proto], 1); |
| 720 | status = rfkill_register(kim_gdata->rfkill[proto]); |
| 721 | if (unlikely(status)) { |
| 722 | pr_err("rfkill registration failed for gpio %ld", |
| 723 | gpios[proto]); |
| 724 | rfkill_unregister(kim_gdata->rfkill[proto]); |
| 725 | continue; |
| 726 | } |
| 727 | pr_info("rfkill entry created for %ld", gpios[proto]); |
| 728 | } |
Naveen Jain | e2a5328 | 2010-06-09 03:45:33 -0500 | [diff] [blame] | 729 | |
Pavan Savoy | c1afac1 | 2010-07-28 02:25:59 -0500 | [diff] [blame] | 730 | kim_debugfs_dir = debugfs_create_dir("ti-st", NULL); |
| 731 | if (IS_ERR(kim_debugfs_dir)) { |
| 732 | pr_err(" debugfs entries creation failed "); |
| 733 | kim_debugfs_dir = NULL; |
Naveen Jain | e2a5328 | 2010-06-09 03:45:33 -0500 | [diff] [blame] | 734 | return -1; |
| 735 | } |
Pavan Savoy | c1afac1 | 2010-07-28 02:25:59 -0500 | [diff] [blame] | 736 | |
| 737 | debugfs_create_file("version", S_IRUGO, kim_debugfs_dir, |
| 738 | kim_gdata, &version_debugfs_fops); |
| 739 | debugfs_create_file("protocols", S_IRUGO, kim_debugfs_dir, |
| 740 | kim_gdata, &list_debugfs_fops); |
| 741 | pr_info(" debugfs entries created "); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 742 | return 0; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 743 | } |
| 744 | |
| 745 | static int kim_remove(struct platform_device *pdev) |
| 746 | { |
| 747 | /* free the GPIOs requested |
| 748 | */ |
| 749 | long *gpios = pdev->dev.platform_data; |
| 750 | long proto; |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 751 | struct kim_data_s *kim_gdata; |
| 752 | |
| 753 | kim_gdata = dev_get_drvdata(&pdev->dev); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 754 | |
| 755 | for (proto = 0; (proto < ST_MAX) && (gpios[proto] != -1); proto++) { |
| 756 | /* Claim the Bluetooth/FM/GPIO |
| 757 | * nShutdown gpio from the system |
| 758 | */ |
| 759 | gpio_free(gpios[proto]); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 760 | rfkill_unregister(kim_gdata->rfkill[proto]); |
| 761 | rfkill_destroy(kim_gdata->rfkill[proto]); |
| 762 | kim_gdata->rfkill[proto] = NULL; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 763 | } |
| 764 | pr_info("kim: GPIO Freed"); |
Pavan Savoy | c1afac1 | 2010-07-28 02:25:59 -0500 | [diff] [blame] | 765 | debugfs_remove_recursive(kim_debugfs_dir); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 766 | kim_gdata->kim_pdev = NULL; |
| 767 | st_core_exit(kim_gdata->core_data); |
Pavan Savoy | 38d9df4 | 2010-07-08 08:55:17 -0500 | [diff] [blame] | 768 | |
| 769 | kfree(kim_gdata); |
| 770 | kim_gdata = NULL; |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 771 | return 0; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 772 | } |
| 773 | |
| 774 | /**********************************************************************/ |
| 775 | /* entry point for ST KIM module, called in from ST Core */ |
| 776 | |
| 777 | static int __init st_kim_init(void) |
| 778 | { |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 779 | long ret = 0; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 780 | ret = platform_driver_register(&kim_platform_driver); |
| 781 | if (ret != 0) { |
| 782 | pr_err("platform drv registration failed"); |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 783 | return -1; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 784 | } |
Pavan Savoy | 320920c | 2010-07-14 08:21:12 -0500 | [diff] [blame] | 785 | return 0; |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 786 | } |
| 787 | |
| 788 | static void __exit st_kim_deinit(void) |
| 789 | { |
| 790 | /* the following returns void */ |
| 791 | platform_driver_unregister(&kim_platform_driver); |
Pavan Savoy | d0088ce | 2010-04-08 13:16:54 -0500 | [diff] [blame] | 792 | } |
| 793 | |
| 794 | |
| 795 | module_init(st_kim_init); |
| 796 | module_exit(st_kim_deinit); |
| 797 | MODULE_AUTHOR("Pavan Savoy <pavan_savoy@ti.com>"); |
| 798 | MODULE_DESCRIPTION("Shared Transport Driver for TI BT/FM/GPS combo chips "); |
| 799 | MODULE_LICENSE("GPL"); |