2 * linux/drivers/net/wireless/libertas/if_sdio.c
4 * Copyright 2007-2008 Pierre Ossman
6 * Inspired by if_cs.c, Copyright 2007 Holger Schurig
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or (at
11 * your option) any later version.
13 * This hardware has more or less no CMD53 support, so all registers
14 * must be accessed using sdio_readb()/sdio_writeb().
16 * Transfers must be in one transaction or the firmware goes bonkers.
17 * This means that the transfer must either be small enough to do a
18 * byte based transfer or it must be padded to a multiple of the
21 * As SDIO is still new to the kernel, it is unfortunately common with
22 * bugs in the host controllers related to that. One such bug is that
23 * controllers cannot do transfers that aren't a multiple of 4 bytes.
24 * If you don't have time to fix the host controller driver, you can
25 * work around the problem by modifying if_sdio_host_to_card() and
26 * if_sdio_card_to_host() to pad the data.
29 #include <linux/kernel.h>
30 #include <linux/moduleparam.h>
31 #include <linux/slab.h>
32 #include <linux/firmware.h>
33 #include <linux/netdevice.h>
34 #include <linux/delay.h>
35 #include <linux/mmc/card.h>
36 #include <linux/mmc/sdio_func.h>
37 #include <linux/mmc/sdio_ids.h>
38 #include <linux/mmc/sdio.h>
39 #include <linux/mmc/host.h>
48 /* The if_sdio_remove() callback function is called when
49 * user removes this module from kernel space or ejects
50 * the card from the slot. The driver handles these 2 cases
51 * differently for SD8688 combo chip.
52 * If the user is removing the module, the FUNC_SHUTDOWN
53 * command for SD8688 is sent to the firmware.
54 * If the card is removed, there is no need to send this command.
56 * The variable 'user_rmmod' is used to distinguish these two
57 * scenarios. This flag is initialized as FALSE in case the card
58 * is removed, and will be set to TRUE for module removal when
59 * module_exit function is called.
63 static char *lbs_helper_name = NULL;
64 module_param_named(helper_name, lbs_helper_name, charp, 0644);
66 static char *lbs_fw_name = NULL;
67 module_param_named(fw_name, lbs_fw_name, charp, 0644);
69 static const struct sdio_device_id if_sdio_ids[] = {
70 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL,
71 SDIO_DEVICE_ID_MARVELL_LIBERTAS) },
72 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL,
73 SDIO_DEVICE_ID_MARVELL_8688WLAN) },
74 { /* end: all zeroes */ },
77 MODULE_DEVICE_TABLE(sdio, if_sdio_ids);
79 struct if_sdio_model {
85 static struct if_sdio_model if_sdio_models[] = {
88 .model = IF_SDIO_MODEL_8385,
89 .helper = "sd8385_helper.bin",
90 .firmware = "sd8385.bin",
94 .model = IF_SDIO_MODEL_8686,
95 .helper = "sd8686_helper.bin",
96 .firmware = "sd8686.bin",
100 .model = IF_SDIO_MODEL_8688,
101 .helper = "sd8688_helper.bin",
102 .firmware = "sd8688.bin",
105 MODULE_FIRMWARE("sd8385_helper.bin");
106 MODULE_FIRMWARE("sd8385.bin");
107 MODULE_FIRMWARE("sd8686_helper.bin");
108 MODULE_FIRMWARE("sd8686.bin");
109 MODULE_FIRMWARE("sd8688_helper.bin");
110 MODULE_FIRMWARE("sd8688.bin");
112 struct if_sdio_packet {
113 struct if_sdio_packet *next;
115 u8 buffer[0] __attribute__((aligned(4)));
118 struct if_sdio_card {
119 struct sdio_func *func;
120 struct lbs_private *priv;
123 unsigned long ioport;
124 unsigned int scratch_reg;
127 const char *firmware;
132 struct if_sdio_packet *packets;
134 struct workqueue_struct *workqueue;
135 struct work_struct packet_worker;
140 /********************************************************************/
142 /********************************************************************/
145 * For SD8385/SD8686, this function reads firmware status after
146 * the image is downloaded, or reads RX packet length when
147 * interrupt (with IF_SDIO_H_INT_UPLD bit set) is received.
148 * For SD8688, this function reads firmware status only.
150 static u16 if_sdio_read_scratch(struct if_sdio_card *card, int *err)
155 scratch = sdio_readb(card->func, card->scratch_reg, &ret);
157 scratch |= sdio_readb(card->func, card->scratch_reg + 1,
169 static u8 if_sdio_read_rx_unit(struct if_sdio_card *card)
174 rx_unit = sdio_readb(card->func, IF_SDIO_RX_UNIT, &ret);
182 static u16 if_sdio_read_rx_len(struct if_sdio_card *card, int *err)
187 switch (card->model) {
188 case IF_SDIO_MODEL_8385:
189 case IF_SDIO_MODEL_8686:
190 rx_len = if_sdio_read_scratch(card, &ret);
192 case IF_SDIO_MODEL_8688:
193 default: /* for newer chipsets */
194 rx_len = sdio_readb(card->func, IF_SDIO_RX_LEN, &ret);
196 rx_len <<= card->rx_unit;
198 rx_len = 0xffff; /* invalid length */
209 static int if_sdio_handle_cmd(struct if_sdio_card *card,
210 u8 *buffer, unsigned size)
212 struct lbs_private *priv = card->priv;
217 lbs_deb_enter(LBS_DEB_SDIO);
219 if (size > LBS_CMD_BUFFER_SIZE) {
220 lbs_deb_sdio("response packet too large (%d bytes)\n",
226 spin_lock_irqsave(&priv->driver_lock, flags);
228 i = (priv->resp_idx == 0) ? 1 : 0;
229 BUG_ON(priv->resp_len[i]);
230 priv->resp_len[i] = size;
231 memcpy(priv->resp_buf[i], buffer, size);
232 lbs_notify_command_response(priv, i);
234 spin_unlock_irqrestore(&card->priv->driver_lock, flags);
239 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
243 static int if_sdio_handle_data(struct if_sdio_card *card,
244 u8 *buffer, unsigned size)
250 lbs_deb_enter(LBS_DEB_SDIO);
252 if (size > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE) {
253 lbs_deb_sdio("response packet too large (%d bytes)\n",
259 skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + NET_IP_ALIGN);
265 skb_reserve(skb, NET_IP_ALIGN);
267 data = skb_put(skb, size);
269 memcpy(data, buffer, size);
271 lbs_process_rxed_packet(card->priv, skb);
276 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
281 static int if_sdio_handle_event(struct if_sdio_card *card,
282 u8 *buffer, unsigned size)
287 lbs_deb_enter(LBS_DEB_SDIO);
289 if (card->model == IF_SDIO_MODEL_8385) {
290 event = sdio_readb(card->func, IF_SDIO_EVENT, &ret);
294 /* right shift 3 bits to get the event id */
298 lbs_deb_sdio("event packet too small (%d bytes)\n",
303 event = buffer[3] << 24;
304 event |= buffer[2] << 16;
305 event |= buffer[1] << 8;
306 event |= buffer[0] << 0;
309 lbs_queue_event(card->priv, event & 0xFF);
313 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
318 static int if_sdio_wait_status(struct if_sdio_card *card, const u8 condition)
321 unsigned long timeout;
324 timeout = jiffies + HZ;
326 status = sdio_readb(card->func, IF_SDIO_STATUS, &ret);
329 if ((status & condition) == condition)
331 if (time_after(jiffies, timeout))
338 static int if_sdio_card_to_host(struct if_sdio_card *card)
341 u16 size, type, chunk;
343 lbs_deb_enter(LBS_DEB_SDIO);
345 size = if_sdio_read_rx_len(card, &ret);
350 lbs_deb_sdio("invalid packet size (%d bytes) from firmware\n",
356 ret = if_sdio_wait_status(card, IF_SDIO_IO_RDY);
361 * The transfer must be in one transaction or the firmware
362 * goes suicidal. There's no way to guarantee that for all
363 * controllers, but we can at least try.
365 chunk = sdio_align_size(card->func, size);
367 ret = sdio_readsb(card->func, card->buffer, card->ioport, chunk);
371 chunk = card->buffer[0] | (card->buffer[1] << 8);
372 type = card->buffer[2] | (card->buffer[3] << 8);
374 lbs_deb_sdio("packet of type %d and size %d bytes\n",
375 (int)type, (int)chunk);
378 lbs_deb_sdio("packet fragment (%d > %d)\n",
379 (int)chunk, (int)size);
385 lbs_deb_sdio("packet fragment (%d < %d)\n",
386 (int)chunk, (int)size);
391 ret = if_sdio_handle_cmd(card, card->buffer + 4, chunk - 4);
396 ret = if_sdio_handle_data(card, card->buffer + 4, chunk - 4);
401 ret = if_sdio_handle_event(card, card->buffer + 4, chunk - 4);
406 lbs_deb_sdio("invalid type (%d) from firmware\n",
414 lbs_pr_err("problem fetching packet from firmware\n");
416 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
421 static void if_sdio_host_to_card_worker(struct work_struct *work)
423 struct if_sdio_card *card;
424 struct if_sdio_packet *packet;
428 lbs_deb_enter(LBS_DEB_SDIO);
430 card = container_of(work, struct if_sdio_card, packet_worker);
433 spin_lock_irqsave(&card->lock, flags);
434 packet = card->packets;
436 card->packets = packet->next;
437 spin_unlock_irqrestore(&card->lock, flags);
442 sdio_claim_host(card->func);
444 ret = if_sdio_wait_status(card, IF_SDIO_IO_RDY);
446 ret = sdio_writesb(card->func, card->ioport,
447 packet->buffer, packet->nb);
451 lbs_pr_err("error %d sending packet to firmware\n", ret);
453 sdio_release_host(card->func);
458 lbs_deb_leave(LBS_DEB_SDIO);
461 /********************************************************************/
463 /********************************************************************/
465 #define FW_DL_READY_STATUS (IF_SDIO_IO_RDY | IF_SDIO_DL_RDY)
467 static int if_sdio_prog_helper(struct if_sdio_card *card)
470 const struct firmware *fw;
471 unsigned long timeout;
477 lbs_deb_enter(LBS_DEB_SDIO);
479 ret = request_firmware(&fw, card->helper, &card->func->dev);
481 lbs_pr_err("can't load helper firmware\n");
485 chunk_buffer = kzalloc(64, GFP_KERNEL);
491 sdio_claim_host(card->func);
493 ret = sdio_set_block_size(card->func, 32);
501 ret = if_sdio_wait_status(card, FW_DL_READY_STATUS);
505 /* On some platforms (like Davinci) the chip needs more time
506 * between helper blocks.
510 chunk_size = min(size, (size_t)60);
512 *((__le32*)chunk_buffer) = cpu_to_le32(chunk_size);
513 memcpy(chunk_buffer + 4, firmware, chunk_size);
515 lbs_deb_sdio("sending %d bytes chunk\n", chunk_size);
517 ret = sdio_writesb(card->func, card->ioport,
522 firmware += chunk_size;
526 /* an empty block marks the end of the transfer */
527 memset(chunk_buffer, 0, 4);
528 ret = sdio_writesb(card->func, card->ioport, chunk_buffer, 64);
532 lbs_deb_sdio("waiting for helper to boot...\n");
534 /* wait for the helper to boot by looking at the size register */
535 timeout = jiffies + HZ;
539 req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, &ret);
543 req_size |= sdio_readb(card->func, IF_SDIO_RD_BASE + 1, &ret) << 8;
550 if (time_after(jiffies, timeout)) {
561 sdio_release_host(card->func);
564 release_firmware(fw);
568 lbs_pr_err("failed to load helper firmware\n");
570 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
575 static int if_sdio_prog_real(struct if_sdio_card *card)
578 const struct firmware *fw;
579 unsigned long timeout;
583 size_t size, req_size;
585 lbs_deb_enter(LBS_DEB_SDIO);
587 ret = request_firmware(&fw, card->firmware, &card->func->dev);
589 lbs_pr_err("can't load firmware\n");
593 chunk_buffer = kzalloc(512, GFP_KERNEL);
599 sdio_claim_host(card->func);
601 ret = sdio_set_block_size(card->func, 32);
609 ret = if_sdio_wait_status(card, FW_DL_READY_STATUS);
613 req_size = sdio_readb(card->func, IF_SDIO_RD_BASE, &ret);
617 req_size |= sdio_readb(card->func, IF_SDIO_RD_BASE + 1, &ret) << 8;
621 lbs_deb_sdio("firmware wants %d bytes\n", (int)req_size);
624 lbs_deb_sdio("firmware helper gave up early\n");
629 if (req_size & 0x01) {
630 lbs_deb_sdio("firmware helper signalled error\n");
639 chunk_size = min(req_size, (size_t)512);
641 memcpy(chunk_buffer, firmware, chunk_size);
643 lbs_deb_sdio("sending %d bytes (%d bytes) chunk\n",
644 chunk_size, (chunk_size + 31) / 32 * 32);
646 ret = sdio_writesb(card->func, card->ioport,
647 chunk_buffer, roundup(chunk_size, 32));
651 firmware += chunk_size;
653 req_size -= chunk_size;
659 lbs_deb_sdio("waiting for firmware to boot...\n");
661 /* wait for the firmware to boot */
662 timeout = jiffies + HZ;
666 scratch = if_sdio_read_scratch(card, &ret);
670 if (scratch == IF_SDIO_FIRMWARE_OK)
673 if (time_after(jiffies, timeout)) {
684 sdio_release_host(card->func);
687 release_firmware(fw);
691 lbs_pr_err("failed to load firmware\n");
693 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
698 static int if_sdio_prog_firmware(struct if_sdio_card *card)
703 lbs_deb_enter(LBS_DEB_SDIO);
705 sdio_claim_host(card->func);
706 scratch = if_sdio_read_scratch(card, &ret);
707 sdio_release_host(card->func);
712 lbs_deb_sdio("firmware status = %#x\n", scratch);
714 if (scratch == IF_SDIO_FIRMWARE_OK) {
715 lbs_deb_sdio("firmware already loaded\n");
719 ret = if_sdio_prog_helper(card);
723 ret = if_sdio_prog_real(card);
728 sdio_claim_host(card->func);
729 sdio_set_block_size(card->func, IF_SDIO_BLOCK_SIZE);
730 sdio_release_host(card->func);
734 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
739 /*******************************************************************/
740 /* Libertas callbacks */
741 /*******************************************************************/
743 static int if_sdio_host_to_card(struct lbs_private *priv,
744 u8 type, u8 *buf, u16 nb)
747 struct if_sdio_card *card;
748 struct if_sdio_packet *packet, *cur;
752 lbs_deb_enter_args(LBS_DEB_SDIO, "type %d, bytes %d", type, nb);
756 if (nb > (65536 - sizeof(struct if_sdio_packet) - 4)) {
762 * The transfer must be in one transaction or the firmware
763 * goes suicidal. There's no way to guarantee that for all
764 * controllers, but we can at least try.
766 size = sdio_align_size(card->func, nb + 4);
768 packet = kzalloc(sizeof(struct if_sdio_packet) + size,
779 * SDIO specific header.
781 packet->buffer[0] = (nb + 4) & 0xff;
782 packet->buffer[1] = ((nb + 4) >> 8) & 0xff;
783 packet->buffer[2] = type;
784 packet->buffer[3] = 0;
786 memcpy(packet->buffer + 4, buf, nb);
788 spin_lock_irqsave(&card->lock, flags);
791 card->packets = packet;
801 priv->dnld_sent = DNLD_CMD_SENT;
804 priv->dnld_sent = DNLD_DATA_SENT;
807 lbs_deb_sdio("unknown packet type %d\n", (int)type);
810 spin_unlock_irqrestore(&card->lock, flags);
812 queue_work(card->workqueue, &card->packet_worker);
817 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
822 static int if_sdio_enter_deep_sleep(struct lbs_private *priv)
825 struct cmd_header cmd;
827 memset(&cmd, 0, sizeof(cmd));
829 lbs_deb_sdio("send DEEP_SLEEP command\n");
830 ret = __lbs_cmd(priv, CMD_802_11_DEEP_SLEEP, &cmd, sizeof(cmd),
831 lbs_cmd_copyback, (unsigned long) &cmd);
833 lbs_pr_err("DEEP_SLEEP cmd failed\n");
839 static int if_sdio_exit_deep_sleep(struct lbs_private *priv)
841 struct if_sdio_card *card = priv->card;
844 lbs_deb_enter(LBS_DEB_SDIO);
845 sdio_claim_host(card->func);
847 sdio_writeb(card->func, HOST_POWER_UP, CONFIGURATION_REG, &ret);
849 lbs_pr_err("sdio_writeb failed!\n");
851 sdio_release_host(card->func);
852 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
856 static int if_sdio_reset_deep_sleep_wakeup(struct lbs_private *priv)
858 struct if_sdio_card *card = priv->card;
861 lbs_deb_enter(LBS_DEB_SDIO);
862 sdio_claim_host(card->func);
864 sdio_writeb(card->func, 0, CONFIGURATION_REG, &ret);
866 lbs_pr_err("sdio_writeb failed!\n");
868 sdio_release_host(card->func);
869 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
874 /*******************************************************************/
876 /*******************************************************************/
878 static void if_sdio_interrupt(struct sdio_func *func)
881 struct if_sdio_card *card;
884 lbs_deb_enter(LBS_DEB_SDIO);
886 card = sdio_get_drvdata(func);
888 cause = sdio_readb(card->func, IF_SDIO_H_INT_STATUS, &ret);
892 lbs_deb_sdio("interrupt: 0x%X\n", (unsigned)cause);
894 sdio_writeb(card->func, ~cause, IF_SDIO_H_INT_STATUS, &ret);
899 * Ignore the define name, this really means the card has
900 * successfully received the command.
902 card->priv->is_activity_detected = 1;
903 if (cause & IF_SDIO_H_INT_DNLD)
904 lbs_host_to_card_done(card->priv);
907 if (cause & IF_SDIO_H_INT_UPLD) {
908 ret = if_sdio_card_to_host(card);
916 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
919 static int if_sdio_probe(struct sdio_func *func,
920 const struct sdio_device_id *id)
922 struct if_sdio_card *card;
923 struct lbs_private *priv;
926 struct if_sdio_packet *packet;
927 struct mmc_host *host = func->card->host;
929 lbs_deb_enter(LBS_DEB_SDIO);
931 for (i = 0;i < func->card->num_info;i++) {
932 if (sscanf(func->card->info[i],
933 "802.11 SDIO ID: %x", &model) == 1)
935 if (sscanf(func->card->info[i],
936 "ID: %x", &model) == 1)
938 if (!strcmp(func->card->info[i], "IBIS Wireless SDIO Card")) {
939 model = IF_SDIO_MODEL_8385;
944 if (i == func->card->num_info) {
945 lbs_pr_err("unable to identify card model\n");
949 card = kzalloc(sizeof(struct if_sdio_card), GFP_KERNEL);
956 switch (card->model) {
957 case IF_SDIO_MODEL_8385:
958 card->scratch_reg = IF_SDIO_SCRATCH_OLD;
960 case IF_SDIO_MODEL_8686:
961 card->scratch_reg = IF_SDIO_SCRATCH;
963 case IF_SDIO_MODEL_8688:
964 default: /* for newer chipsets */
965 card->scratch_reg = IF_SDIO_FW_STATUS;
969 spin_lock_init(&card->lock);
970 card->workqueue = create_workqueue("libertas_sdio");
971 INIT_WORK(&card->packet_worker, if_sdio_host_to_card_worker);
973 for (i = 0;i < ARRAY_SIZE(if_sdio_models);i++) {
974 if (card->model == if_sdio_models[i].model)
978 if (i == ARRAY_SIZE(if_sdio_models)) {
979 lbs_pr_err("unknown card model 0x%x\n", card->model);
984 card->helper = if_sdio_models[i].helper;
985 card->firmware = if_sdio_models[i].firmware;
987 if (lbs_helper_name) {
988 lbs_deb_sdio("overriding helper firmware: %s\n",
990 card->helper = lbs_helper_name;
994 lbs_deb_sdio("overriding firmware: %s\n", lbs_fw_name);
995 card->firmware = lbs_fw_name;
998 sdio_claim_host(func);
1000 ret = sdio_enable_func(func);
1004 ret = sdio_claim_irq(func, if_sdio_interrupt);
1008 /* For 1-bit transfers to the 8686 model, we need to enable the
1009 * interrupt flag in the CCCR register. Set the MMC_QUIRK_LENIENT_FN0
1010 * bit to allow access to non-vendor registers. */
1011 if ((card->model == IF_SDIO_MODEL_8686) &&
1012 (host->caps & MMC_CAP_SDIO_IRQ) &&
1013 (host->ios.bus_width == MMC_BUS_WIDTH_1)) {
1016 func->card->quirks |= MMC_QUIRK_LENIENT_FN0;
1017 reg = sdio_f0_readb(func, SDIO_CCCR_IF, &ret);
1021 reg |= SDIO_BUS_ECSI;
1022 sdio_f0_writeb(func, reg, SDIO_CCCR_IF, &ret);
1027 card->ioport = sdio_readb(func, IF_SDIO_IOPORT, &ret);
1031 card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 1, &ret) << 8;
1035 card->ioport |= sdio_readb(func, IF_SDIO_IOPORT + 2, &ret) << 16;
1039 sdio_release_host(func);
1041 sdio_set_drvdata(func, card);
1043 lbs_deb_sdio("class = 0x%X, vendor = 0x%X, "
1044 "device = 0x%X, model = 0x%X, ioport = 0x%X\n",
1045 func->class, func->vendor, func->device,
1046 model, (unsigned)card->ioport);
1048 ret = if_sdio_prog_firmware(card);
1052 priv = lbs_add_card(card, &func->dev);
1061 priv->hw_host_to_card = if_sdio_host_to_card;
1062 priv->enter_deep_sleep = if_sdio_enter_deep_sleep;
1063 priv->exit_deep_sleep = if_sdio_exit_deep_sleep;
1064 priv->reset_deep_sleep_wakeup = if_sdio_reset_deep_sleep_wakeup;
1068 sdio_claim_host(func);
1071 * Get rx_unit if the chip is SD8688 or newer.
1072 * SD8385 & SD8686 do not have rx_unit.
1074 if ((card->model != IF_SDIO_MODEL_8385)
1075 && (card->model != IF_SDIO_MODEL_8686))
1076 card->rx_unit = if_sdio_read_rx_unit(card);
1081 * Enable interrupts now that everything is set up
1083 sdio_writeb(func, 0x0f, IF_SDIO_H_INT_MASK, &ret);
1084 sdio_release_host(func);
1089 * FUNC_INIT is required for SD8688 WLAN/BT multiple functions
1091 if (card->model == IF_SDIO_MODEL_8688) {
1092 struct cmd_header cmd;
1094 memset(&cmd, 0, sizeof(cmd));
1096 lbs_deb_sdio("send function INIT command\n");
1097 if (__lbs_cmd(priv, CMD_FUNC_INIT, &cmd, sizeof(cmd),
1098 lbs_cmd_copyback, (unsigned long) &cmd))
1099 lbs_pr_alert("CMD_FUNC_INIT cmd failed\n");
1102 ret = lbs_start_card(priv);
1104 goto err_activate_card;
1107 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
1112 flush_workqueue(card->workqueue);
1113 lbs_remove_card(priv);
1115 sdio_claim_host(func);
1117 sdio_release_irq(func);
1119 sdio_disable_func(func);
1121 sdio_release_host(func);
1123 destroy_workqueue(card->workqueue);
1124 while (card->packets) {
1125 packet = card->packets;
1126 card->packets = card->packets->next;
1135 static void if_sdio_remove(struct sdio_func *func)
1137 struct if_sdio_card *card;
1138 struct if_sdio_packet *packet;
1140 lbs_deb_enter(LBS_DEB_SDIO);
1142 card = sdio_get_drvdata(func);
1144 if (user_rmmod && (card->model == IF_SDIO_MODEL_8688)) {
1146 * FUNC_SHUTDOWN is required for SD8688 WLAN/BT
1147 * multiple functions
1149 struct cmd_header cmd;
1151 memset(&cmd, 0, sizeof(cmd));
1153 lbs_deb_sdio("send function SHUTDOWN command\n");
1154 if (__lbs_cmd(card->priv, CMD_FUNC_SHUTDOWN,
1155 &cmd, sizeof(cmd), lbs_cmd_copyback,
1156 (unsigned long) &cmd))
1157 lbs_pr_alert("CMD_FUNC_SHUTDOWN cmd failed\n");
1161 lbs_deb_sdio("call remove card\n");
1162 lbs_stop_card(card->priv);
1163 lbs_remove_card(card->priv);
1164 card->priv->surpriseremoved = 1;
1166 flush_workqueue(card->workqueue);
1167 destroy_workqueue(card->workqueue);
1169 sdio_claim_host(func);
1170 sdio_release_irq(func);
1171 sdio_disable_func(func);
1172 sdio_release_host(func);
1174 while (card->packets) {
1175 packet = card->packets;
1176 card->packets = card->packets->next;
1182 lbs_deb_leave(LBS_DEB_SDIO);
1185 static int if_sdio_suspend(struct device *dev)
1187 struct sdio_func *func = dev_to_sdio_func(dev);
1189 struct if_sdio_card *card = sdio_get_drvdata(func);
1191 mmc_pm_flag_t flags = sdio_get_host_pm_caps(func);
1193 lbs_pr_info("%s: suspend: PM flags = 0x%x\n",
1194 sdio_func_id(func), flags);
1196 /* If we aren't being asked to wake on anything, we should bail out
1197 * and let the SD stack power down the card.
1199 if (card->priv->wol_criteria == EHS_REMOVE_WAKEUP) {
1200 lbs_pr_info("Suspend without wake params -- "
1201 "powering down card.");
1205 if (!(flags & MMC_PM_KEEP_POWER)) {
1206 lbs_pr_err("%s: cannot remain alive while host is suspended\n",
1207 sdio_func_id(func));
1211 ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
1215 ret = lbs_suspend(card->priv);
1219 return sdio_set_host_pm_flags(func, MMC_PM_WAKE_SDIO_IRQ);
1222 static int if_sdio_resume(struct device *dev)
1224 struct sdio_func *func = dev_to_sdio_func(dev);
1225 struct if_sdio_card *card = sdio_get_drvdata(func);
1228 lbs_pr_info("%s: resume: we're back\n", sdio_func_id(func));
1230 ret = lbs_resume(card->priv);
1235 static const struct dev_pm_ops if_sdio_pm_ops = {
1236 .suspend = if_sdio_suspend,
1237 .resume = if_sdio_resume,
1240 static struct sdio_driver if_sdio_driver = {
1241 .name = "libertas_sdio",
1242 .id_table = if_sdio_ids,
1243 .probe = if_sdio_probe,
1244 .remove = if_sdio_remove,
1246 .pm = &if_sdio_pm_ops,
1250 /*******************************************************************/
1251 /* Module functions */
1252 /*******************************************************************/
1254 static int __init if_sdio_init_module(void)
1258 lbs_deb_enter(LBS_DEB_SDIO);
1260 printk(KERN_INFO "libertas_sdio: Libertas SDIO driver\n");
1261 printk(KERN_INFO "libertas_sdio: Copyright Pierre Ossman\n");
1263 ret = sdio_register_driver(&if_sdio_driver);
1265 /* Clear the flag in case user removes the card. */
1268 lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
1273 static void __exit if_sdio_exit_module(void)
1275 lbs_deb_enter(LBS_DEB_SDIO);
1277 /* Set the flag as user is removing this module. */
1280 sdio_unregister_driver(&if_sdio_driver);
1282 lbs_deb_leave(LBS_DEB_SDIO);
1285 module_init(if_sdio_init_module);
1286 module_exit(if_sdio_exit_module);
1288 MODULE_DESCRIPTION("Libertas SDIO WLAN Driver");
1289 MODULE_AUTHOR("Pierre Ossman");
1290 MODULE_LICENSE("GPL");