2 * Marvell BT-over-SDIO driver: SDIO interface related functions.
4 * Copyright (C) 2009, Marvell International Ltd.
6 * This software file (the "File") is distributed by Marvell International
7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
8 * (the "License"). You may use, redistribute and/or modify this File in
9 * accordance with the terms and conditions of the License, a copy of which
10 * is available by writing to the Free Software Foundation, Inc.,
11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
15 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
17 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
18 * this warranty disclaimer.
21 #include <linux/firmware.h>
22 #include <linux/slab.h>
24 #include <linux/mmc/sdio_ids.h>
25 #include <linux/mmc/sdio_func.h>
26 #include <linux/module.h>
28 #include <net/bluetooth/bluetooth.h>
29 #include <net/bluetooth/hci_core.h>
31 #include "btmrvl_drv.h"
32 #include "btmrvl_sdio.h"
36 /* The btmrvl_sdio_remove() callback function is called
37 * when user removes this module from kernel space or ejects
38 * the card from the slot. The driver handles these 2 cases
40 * If the user is removing the module, a MODULE_SHUTDOWN_REQ
41 * command is sent to firmware and interrupt will be disabled.
42 * If the card is removed, there is no need to send command
43 * or disable interrupt.
45 * The variable 'user_rmmod' is used to distinguish these two
46 * scenarios. This flag is initialized as FALSE in case the card
47 * is removed, and will be set to TRUE for module removal when
48 * module_exit function is called.
53 static const struct btmrvl_sdio_card_reg btmrvl_reg_8688 = {
55 .host_int_mask = 0x04,
56 .host_intstatus = 0x05,
58 .sq_read_base_addr_a0 = 0x10,
59 .sq_read_base_addr_a1 = 0x11,
60 .card_fw_status0 = 0x40,
61 .card_fw_status1 = 0x41,
68 static const struct btmrvl_sdio_card_reg btmrvl_reg_87xx = {
70 .host_int_mask = 0x02,
71 .host_intstatus = 0x03,
73 .sq_read_base_addr_a0 = 0x40,
74 .sq_read_base_addr_a1 = 0x41,
75 .card_revision = 0x5c,
76 .card_fw_status0 = 0x60,
77 .card_fw_status1 = 0x61,
85 static const struct btmrvl_sdio_device btmrvl_sdio_sd8688 = {
86 .helper = "sd8688_helper.bin",
87 .firmware = "sd8688.bin",
88 .reg = &btmrvl_reg_8688,
92 static const struct btmrvl_sdio_device btmrvl_sdio_sd8787 = {
94 .firmware = "mrvl/sd8787_uapsta.bin",
95 .reg = &btmrvl_reg_87xx,
96 .sd_blksz_fw_dl = 256,
99 static const struct btmrvl_sdio_device btmrvl_sdio_sd8797 = {
101 .firmware = "mrvl/sd8797_uapsta.bin",
102 .reg = &btmrvl_reg_87xx,
103 .sd_blksz_fw_dl = 256,
106 static const struct sdio_device_id btmrvl_sdio_ids[] = {
107 /* Marvell SD8688 Bluetooth device */
108 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9105),
109 .driver_data = (unsigned long) &btmrvl_sdio_sd8688 },
110 /* Marvell SD8787 Bluetooth device */
111 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911A),
112 .driver_data = (unsigned long) &btmrvl_sdio_sd8787 },
113 /* Marvell SD8797 Bluetooth device */
114 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912A),
115 .driver_data = (unsigned long) &btmrvl_sdio_sd8797 },
117 { } /* Terminating entry */
120 MODULE_DEVICE_TABLE(sdio, btmrvl_sdio_ids);
122 static int btmrvl_sdio_get_rx_unit(struct btmrvl_sdio_card *card)
127 reg = sdio_readb(card->func, card->reg->card_rx_unit, &ret);
134 static int btmrvl_sdio_read_fw_status(struct btmrvl_sdio_card *card, u16 *dat)
141 fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret);
145 fws1 = sdio_readb(card->func, card->reg->card_fw_status1, &ret);
149 *dat = (((u16) fws1) << 8) | fws0;
154 static int btmrvl_sdio_read_rx_len(struct btmrvl_sdio_card *card, u16 *dat)
159 reg = sdio_readb(card->func, card->reg->card_rx_len, &ret);
161 *dat = (u16) reg << card->rx_unit;
166 static int btmrvl_sdio_enable_host_int_mask(struct btmrvl_sdio_card *card,
171 sdio_writeb(card->func, mask, card->reg->host_int_mask, &ret);
173 BT_ERR("Unable to enable the host interrupt!");
180 static int btmrvl_sdio_disable_host_int_mask(struct btmrvl_sdio_card *card,
186 host_int_mask = sdio_readb(card->func, card->reg->host_int_mask, &ret);
190 host_int_mask &= ~mask;
192 sdio_writeb(card->func, host_int_mask, card->reg->host_int_mask, &ret);
194 BT_ERR("Unable to disable the host interrupt!");
201 static int btmrvl_sdio_poll_card_status(struct btmrvl_sdio_card *card, u8 bits)
207 for (tries = 0; tries < MAX_POLL_TRIES * 1000; tries++) {
208 status = sdio_readb(card->func, card->reg->card_status, &ret);
211 if ((status & bits) == bits)
220 BT_ERR("FAILED! ret=%d", ret);
225 static int btmrvl_sdio_verify_fw_download(struct btmrvl_sdio_card *card,
228 int ret = -ETIMEDOUT;
232 /* Wait for firmware to become ready */
233 for (tries = 0; tries < pollnum; tries++) {
234 if (btmrvl_sdio_read_fw_status(card, &firmwarestat) < 0)
237 if (firmwarestat == FIRMWARE_READY) {
248 static int btmrvl_sdio_download_helper(struct btmrvl_sdio_card *card)
250 const struct firmware *fw_helper = NULL;
251 const u8 *helper = NULL;
253 void *tmphlprbuf = NULL;
254 int tmphlprbufsz, hlprblknow, helperlen;
258 ret = request_firmware(&fw_helper, card->helper,
260 if ((ret < 0) || !fw_helper) {
261 BT_ERR("request_firmware(helper) failed, error code = %d",
267 helper = fw_helper->data;
268 helperlen = fw_helper->size;
270 BT_DBG("Downloading helper image (%d bytes), block size %d bytes",
271 helperlen, SDIO_BLOCK_SIZE);
273 tmphlprbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
275 tmphlprbuf = kzalloc(tmphlprbufsz, GFP_KERNEL);
277 BT_ERR("Unable to allocate buffer for helper."
278 " Terminating download");
283 helperbuf = (u8 *) ALIGN_ADDR(tmphlprbuf, BTSDIO_DMA_ALIGN);
285 /* Perform helper data transfer */
286 tx_len = (FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE)
291 ret = btmrvl_sdio_poll_card_status(card,
292 CARD_IO_READY | DN_LD_CARD_RDY);
294 BT_ERR("Helper download poll status timeout @ %d",
299 /* Check if there is more data? */
300 if (hlprblknow >= helperlen)
303 if (helperlen - hlprblknow < tx_len)
304 tx_len = helperlen - hlprblknow;
307 helperbuf[0] = ((tx_len & 0x000000ff) >> 0);
308 helperbuf[1] = ((tx_len & 0x0000ff00) >> 8);
309 helperbuf[2] = ((tx_len & 0x00ff0000) >> 16);
310 helperbuf[3] = ((tx_len & 0xff000000) >> 24);
312 memcpy(&helperbuf[SDIO_HEADER_LEN], &helper[hlprblknow],
315 /* Now send the data */
316 ret = sdio_writesb(card->func, card->ioport, helperbuf,
317 FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE);
319 BT_ERR("IO error during helper download @ %d",
324 hlprblknow += tx_len;
327 BT_DBG("Transferring helper image EOF block");
329 memset(helperbuf, 0x0, SDIO_BLOCK_SIZE);
331 ret = sdio_writesb(card->func, card->ioport, helperbuf,
334 BT_ERR("IO error in writing helper image EOF block");
342 release_firmware(fw_helper);
346 static int btmrvl_sdio_download_fw_w_helper(struct btmrvl_sdio_card *card)
348 const struct firmware *fw_firmware = NULL;
349 const u8 *firmware = NULL;
350 int firmwarelen, tmpfwbufsz, ret;
351 unsigned int tries, offset;
353 void *tmpfwbuf = NULL;
355 u16 len, blksz_dl = card->sd_blksz_fw_dl;
356 int txlen = 0, tx_blocks = 0, count = 0;
358 ret = request_firmware(&fw_firmware, card->firmware,
360 if ((ret < 0) || !fw_firmware) {
361 BT_ERR("request_firmware(firmware) failed, error code = %d",
367 firmware = fw_firmware->data;
368 firmwarelen = fw_firmware->size;
370 BT_DBG("Downloading FW image (%d bytes)", firmwarelen);
372 tmpfwbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
373 tmpfwbuf = kzalloc(tmpfwbufsz, GFP_KERNEL);
375 BT_ERR("Unable to allocate buffer for firmware."
376 " Terminating download");
381 /* Ensure aligned firmware buffer */
382 fwbuf = (u8 *) ALIGN_ADDR(tmpfwbuf, BTSDIO_DMA_ALIGN);
384 /* Perform firmware data transfer */
387 ret = btmrvl_sdio_poll_card_status(card,
388 CARD_IO_READY | DN_LD_CARD_RDY);
390 BT_ERR("FW download with helper poll status"
391 " timeout @ %d", offset);
395 /* Check if there is more data ? */
396 if (offset >= firmwarelen)
399 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
400 base0 = sdio_readb(card->func,
401 card->reg->sq_read_base_addr_a0, &ret);
403 BT_ERR("BASE0 register read failed:"
404 " base0 = 0x%04X(%d)."
405 " Terminating download",
410 base1 = sdio_readb(card->func,
411 card->reg->sq_read_base_addr_a1, &ret);
413 BT_ERR("BASE1 register read failed:"
414 " base1 = 0x%04X(%d)."
415 " Terminating download",
421 len = (((u16) base1) << 8) | base0;
430 else if (len > BTM_UPLD_SIZE) {
431 BT_ERR("FW download failure @%d, invalid length %d",
441 if (count > MAX_WRITE_IOMEM_RETRY) {
442 BT_ERR("FW download failure @%d, "
443 "over max retry count", offset);
447 BT_ERR("FW CRC error indicated by the helper: "
448 "len = 0x%04X, txlen = %d", len, txlen);
450 /* Set txlen to 0 so as to resend from same offset */
456 if (firmwarelen - offset < txlen)
457 txlen = firmwarelen - offset;
459 tx_blocks = (txlen + blksz_dl - 1) / blksz_dl;
461 memcpy(fwbuf, &firmware[offset], txlen);
464 ret = sdio_writesb(card->func, card->ioport, fwbuf,
465 tx_blocks * blksz_dl);
468 BT_ERR("FW download, writesb(%d) failed @%d",
470 sdio_writeb(card->func, HOST_CMD53_FIN,
471 card->reg->cfg, &ret);
473 BT_ERR("writeb failed (CFG)");
479 BT_DBG("FW download over, size %d bytes", offset);
485 release_firmware(fw_firmware);
489 static int btmrvl_sdio_card_to_host(struct btmrvl_private *priv)
492 int ret, buf_block_len, blksz;
493 struct sk_buff *skb = NULL;
496 struct hci_dev *hdev = priv->btmrvl_dev.hcidev;
497 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
499 if (!card || !card->func) {
500 BT_ERR("card or function is NULL!");
505 /* Read the length of data to be transferred */
506 ret = btmrvl_sdio_read_rx_len(card, &buf_len);
508 BT_ERR("read rx_len failed");
513 blksz = SDIO_BLOCK_SIZE;
514 buf_block_len = (buf_len + blksz - 1) / blksz;
516 if (buf_len <= SDIO_HEADER_LEN
517 || (buf_block_len * blksz) > ALLOC_BUF_SIZE) {
518 BT_ERR("invalid packet length: %d", buf_len);
523 /* Allocate buffer */
524 skb = bt_skb_alloc(buf_block_len * blksz + BTSDIO_DMA_ALIGN,
527 BT_ERR("No free skb");
531 if ((unsigned long) skb->data & (BTSDIO_DMA_ALIGN - 1)) {
532 skb_put(skb, (unsigned long) skb->data &
533 (BTSDIO_DMA_ALIGN - 1));
534 skb_pull(skb, (unsigned long) skb->data &
535 (BTSDIO_DMA_ALIGN - 1));
540 ret = sdio_readsb(card->func, payload, card->ioport,
541 buf_block_len * blksz);
543 BT_ERR("readsb failed: %d", ret);
548 /* This is SDIO specific header length: byte[2][1][0], type: byte[3]
549 * (HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor)
552 buf_len = payload[0];
553 buf_len |= (u16) payload[1] << 8;
557 case HCI_ACLDATA_PKT:
558 case HCI_SCODATA_PKT:
560 bt_cb(skb)->pkt_type = type;
561 skb->dev = (void *)hdev;
562 skb_put(skb, buf_len);
563 skb_pull(skb, SDIO_HEADER_LEN);
565 if (type == HCI_EVENT_PKT) {
566 if (btmrvl_check_evtpkt(priv, skb))
571 hdev->stat.byte_rx += buf_len;
574 case MRVL_VENDOR_PKT:
575 bt_cb(skb)->pkt_type = HCI_VENDOR_PKT;
576 skb->dev = (void *)hdev;
577 skb_put(skb, buf_len);
578 skb_pull(skb, SDIO_HEADER_LEN);
580 if (btmrvl_process_event(priv, skb))
583 hdev->stat.byte_rx += buf_len;
587 BT_ERR("Unknown packet type:%d", type);
588 print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, payload,
589 blksz * buf_block_len);
606 static int btmrvl_sdio_process_int_status(struct btmrvl_private *priv)
610 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
612 spin_lock_irqsave(&priv->driver_lock, flags);
615 spin_unlock_irqrestore(&priv->driver_lock, flags);
617 sdio_claim_host(card->func);
618 if (ireg & DN_LD_HOST_INT_STATUS) {
619 if (priv->btmrvl_dev.tx_dnld_rdy)
620 BT_DBG("tx_done already received: "
621 " int_status=0x%x", ireg);
623 priv->btmrvl_dev.tx_dnld_rdy = true;
626 if (ireg & UP_LD_HOST_INT_STATUS)
627 btmrvl_sdio_card_to_host(priv);
629 sdio_release_host(card->func);
634 static void btmrvl_sdio_interrupt(struct sdio_func *func)
636 struct btmrvl_private *priv;
637 struct btmrvl_sdio_card *card;
642 card = sdio_get_drvdata(func);
643 if (!card || !card->priv) {
644 BT_ERR("sbi_interrupt(%p) card or priv is "
645 "NULL, card=%p\n", func, card);
651 ireg = sdio_readb(card->func, card->reg->host_intstatus, &ret);
653 BT_ERR("sdio_readb: read int status register failed");
659 * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
660 * Clear the interrupt status register and re-enable the
663 BT_DBG("ireg = 0x%x", ireg);
665 sdio_writeb(card->func, ~(ireg) & (DN_LD_HOST_INT_STATUS |
666 UP_LD_HOST_INT_STATUS),
667 card->reg->host_intstatus, &ret);
669 BT_ERR("sdio_writeb: clear int status register failed");
674 spin_lock_irqsave(&priv->driver_lock, flags);
676 spin_unlock_irqrestore(&priv->driver_lock, flags);
678 btmrvl_interrupt(priv);
681 static int btmrvl_sdio_register_dev(struct btmrvl_sdio_card *card)
683 struct sdio_func *func;
687 if (!card || !card->func) {
688 BT_ERR("Error: card or function is NULL!");
695 sdio_claim_host(func);
697 ret = sdio_enable_func(func);
699 BT_ERR("sdio_enable_func() failed: ret=%d", ret);
704 ret = sdio_claim_irq(func, btmrvl_sdio_interrupt);
706 BT_ERR("sdio_claim_irq failed: ret=%d", ret);
711 ret = sdio_set_block_size(card->func, SDIO_BLOCK_SIZE);
713 BT_ERR("cannot set SDIO block size");
718 reg = sdio_readb(func, card->reg->io_port_0, &ret);
726 reg = sdio_readb(func, card->reg->io_port_1, &ret);
732 card->ioport |= (reg << 8);
734 reg = sdio_readb(func, card->reg->io_port_2, &ret);
740 card->ioport |= (reg << 16);
742 BT_DBG("SDIO FUNC%d IO port: 0x%x", func->num, card->ioport);
744 sdio_set_drvdata(func, card);
746 sdio_release_host(func);
751 sdio_release_irq(func);
754 sdio_disable_func(func);
757 sdio_release_host(func);
763 static int btmrvl_sdio_unregister_dev(struct btmrvl_sdio_card *card)
765 if (card && card->func) {
766 sdio_claim_host(card->func);
767 sdio_release_irq(card->func);
768 sdio_disable_func(card->func);
769 sdio_release_host(card->func);
770 sdio_set_drvdata(card->func, NULL);
776 static int btmrvl_sdio_enable_host_int(struct btmrvl_sdio_card *card)
780 if (!card || !card->func)
783 sdio_claim_host(card->func);
785 ret = btmrvl_sdio_enable_host_int_mask(card, HIM_ENABLE);
787 btmrvl_sdio_get_rx_unit(card);
789 sdio_release_host(card->func);
794 static int btmrvl_sdio_disable_host_int(struct btmrvl_sdio_card *card)
798 if (!card || !card->func)
801 sdio_claim_host(card->func);
803 ret = btmrvl_sdio_disable_host_int_mask(card, HIM_DISABLE);
805 sdio_release_host(card->func);
810 static int btmrvl_sdio_host_to_card(struct btmrvl_private *priv,
813 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
822 if (!card || !card->func) {
823 BT_ERR("card or function is NULL!");
828 if ((unsigned long) payload & (BTSDIO_DMA_ALIGN - 1)) {
829 tmpbufsz = ALIGN_SZ(nb, BTSDIO_DMA_ALIGN);
830 tmpbuf = kzalloc(tmpbufsz, GFP_KERNEL);
833 buf = (u8 *) ALIGN_ADDR(tmpbuf, BTSDIO_DMA_ALIGN);
834 memcpy(buf, payload, nb);
837 blksz = SDIO_BLOCK_SIZE;
838 buf_block_len = (nb + blksz - 1) / blksz;
840 sdio_claim_host(card->func);
843 /* Transfer data to card */
844 ret = sdio_writesb(card->func, card->ioport, buf,
845 buf_block_len * blksz);
848 BT_ERR("i=%d writesb failed: %d", i, ret);
849 print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,
852 if (i > MAX_WRITE_IOMEM_RETRY)
857 priv->btmrvl_dev.tx_dnld_rdy = false;
860 sdio_release_host(card->func);
866 static int btmrvl_sdio_download_fw(struct btmrvl_sdio_card *card)
870 int pollnum = MAX_POLL_TRIES;
872 if (!card || !card->func) {
873 BT_ERR("card or function is NULL!");
876 sdio_claim_host(card->func);
878 if (!btmrvl_sdio_verify_fw_download(card, 1)) {
879 BT_DBG("Firmware already downloaded!");
883 /* Check if other function driver is downloading the firmware */
884 fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret);
886 BT_ERR("Failed to read FW downloading status!");
891 BT_DBG("BT not the winner (%#x). Skip FW downloading", fws0);
893 /* Give other function more time to download the firmware */
897 ret = btmrvl_sdio_download_helper(card);
899 BT_ERR("Failed to download helper!");
905 if (btmrvl_sdio_download_fw_w_helper(card)) {
906 BT_ERR("Failed to download firmware!");
912 if (btmrvl_sdio_verify_fw_download(card, pollnum)) {
913 BT_ERR("FW failed to be active in time!");
919 sdio_release_host(card->func);
924 static int btmrvl_sdio_wakeup_fw(struct btmrvl_private *priv)
926 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
929 if (!card || !card->func) {
930 BT_ERR("card or function is NULL!");
934 sdio_claim_host(card->func);
936 sdio_writeb(card->func, HOST_POWER_UP, card->reg->cfg, &ret);
938 sdio_release_host(card->func);
940 BT_DBG("wake up firmware");
945 static int btmrvl_sdio_probe(struct sdio_func *func,
946 const struct sdio_device_id *id)
949 struct btmrvl_private *priv = NULL;
950 struct btmrvl_sdio_card *card = NULL;
952 BT_INFO("vendor=0x%x, device=0x%x, class=%d, fn=%d",
953 id->vendor, id->device, id->class, func->num);
955 card = kzalloc(sizeof(*card), GFP_KERNEL);
963 if (id->driver_data) {
964 struct btmrvl_sdio_device *data = (void *) id->driver_data;
965 card->helper = data->helper;
966 card->firmware = data->firmware;
967 card->reg = data->reg;
968 card->sd_blksz_fw_dl = data->sd_blksz_fw_dl;
971 if (btmrvl_sdio_register_dev(card) < 0) {
972 BT_ERR("Failed to register BT device!");
977 /* Disable the interrupts on the card */
978 btmrvl_sdio_disable_host_int(card);
980 if (btmrvl_sdio_download_fw(card)) {
981 BT_ERR("Downloading firmware failed!");
988 btmrvl_sdio_enable_host_int(card);
990 priv = btmrvl_add_card(card);
992 BT_ERR("Initializing card failed!");
994 goto disable_host_int;
999 /* Initialize the interface specific function pointers */
1000 priv->hw_host_to_card = btmrvl_sdio_host_to_card;
1001 priv->hw_wakeup_firmware = btmrvl_sdio_wakeup_fw;
1002 priv->hw_process_int_status = btmrvl_sdio_process_int_status;
1004 if (btmrvl_register_hdev(priv)) {
1005 BT_ERR("Register hdev failed!");
1007 goto disable_host_int;
1010 priv->btmrvl_dev.psmode = 1;
1011 btmrvl_enable_ps(priv);
1013 priv->btmrvl_dev.gpio_gap = 0xffff;
1014 btmrvl_send_hscfg_cmd(priv);
1019 btmrvl_sdio_disable_host_int(card);
1021 btmrvl_sdio_unregister_dev(card);
1028 static void btmrvl_sdio_remove(struct sdio_func *func)
1030 struct btmrvl_sdio_card *card;
1033 card = sdio_get_drvdata(func);
1035 /* Send SHUTDOWN command & disable interrupt
1036 * if user removes the module.
1039 btmrvl_send_module_cfg_cmd(card->priv,
1040 MODULE_SHUTDOWN_REQ);
1041 btmrvl_sdio_disable_host_int(card);
1043 BT_DBG("unregester dev");
1044 btmrvl_sdio_unregister_dev(card);
1045 btmrvl_remove_card(card->priv);
1051 static int btmrvl_sdio_suspend(struct device *dev)
1053 struct sdio_func *func = dev_to_sdio_func(dev);
1054 struct btmrvl_sdio_card *card;
1055 struct btmrvl_private *priv;
1056 mmc_pm_flag_t pm_flags;
1057 struct hci_dev *hcidev;
1060 pm_flags = sdio_get_host_pm_caps(func);
1061 BT_DBG("%s: suspend: PM flags = 0x%x", sdio_func_id(func),
1063 if (!(pm_flags & MMC_PM_KEEP_POWER)) {
1064 BT_ERR("%s: cannot remain alive while suspended",
1065 sdio_func_id(func));
1068 card = sdio_get_drvdata(func);
1069 if (!card || !card->priv) {
1070 BT_ERR("card or priv structure is not valid");
1074 BT_ERR("sdio_func is not specified");
1080 if (priv->adapter->hs_state != HS_ACTIVATED) {
1081 if (btmrvl_enable_hs(priv)) {
1082 BT_ERR("HS not actived, suspend failed!");
1086 hcidev = priv->btmrvl_dev.hcidev;
1087 BT_DBG("%s: SDIO suspend", hcidev->name);
1088 hci_suspend_dev(hcidev);
1089 skb_queue_purge(&priv->adapter->tx_queue);
1091 priv->adapter->is_suspended = true;
1093 /* We will keep the power when hs enabled successfully */
1094 if (priv->adapter->hs_state == HS_ACTIVATED) {
1095 BT_DBG("suspend with MMC_PM_KEEP_POWER");
1096 return sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
1098 BT_DBG("suspend without MMC_PM_KEEP_POWER");
1103 static int btmrvl_sdio_resume(struct device *dev)
1105 struct sdio_func *func = dev_to_sdio_func(dev);
1106 struct btmrvl_sdio_card *card;
1107 struct btmrvl_private *priv;
1108 mmc_pm_flag_t pm_flags;
1109 struct hci_dev *hcidev;
1112 pm_flags = sdio_get_host_pm_caps(func);
1113 BT_DBG("%s: resume: PM flags = 0x%x", sdio_func_id(func),
1115 card = sdio_get_drvdata(func);
1116 if (!card || !card->priv) {
1117 BT_ERR("card or priv structure is not valid");
1121 BT_ERR("sdio_func is not specified");
1126 if (!priv->adapter->is_suspended) {
1127 BT_DBG("device already resumed");
1131 priv->adapter->is_suspended = false;
1132 hcidev = priv->btmrvl_dev.hcidev;
1133 BT_DBG("%s: SDIO resume", hcidev->name);
1134 hci_resume_dev(hcidev);
1135 priv->hw_wakeup_firmware(priv);
1136 priv->adapter->hs_state = HS_DEACTIVATED;
1137 BT_DBG("%s: HS DEACTIVATED in resume!", hcidev->name);
1142 static const struct dev_pm_ops btmrvl_sdio_pm_ops = {
1143 .suspend = btmrvl_sdio_suspend,
1144 .resume = btmrvl_sdio_resume,
1147 static struct sdio_driver bt_mrvl_sdio = {
1148 .name = "btmrvl_sdio",
1149 .id_table = btmrvl_sdio_ids,
1150 .probe = btmrvl_sdio_probe,
1151 .remove = btmrvl_sdio_remove,
1153 .owner = THIS_MODULE,
1154 .pm = &btmrvl_sdio_pm_ops,
1158 static int __init btmrvl_sdio_init_module(void)
1160 if (sdio_register_driver(&bt_mrvl_sdio) != 0) {
1161 BT_ERR("SDIO Driver Registration Failed");
1165 /* Clear the flag in case user removes the card. */
1171 static void __exit btmrvl_sdio_exit_module(void)
1173 /* Set the flag as user is removing this module. */
1176 sdio_unregister_driver(&bt_mrvl_sdio);
1179 module_init(btmrvl_sdio_init_module);
1180 module_exit(btmrvl_sdio_exit_module);
1182 MODULE_AUTHOR("Marvell International Ltd.");
1183 MODULE_DESCRIPTION("Marvell BT-over-SDIO driver ver " VERSION);
1184 MODULE_VERSION(VERSION);
1185 MODULE_LICENSE("GPL v2");
1186 MODULE_FIRMWARE("sd8688_helper.bin");
1187 MODULE_FIRMWARE("sd8688.bin");
1188 MODULE_FIRMWARE("mrvl/sd8787_uapsta.bin");
1189 MODULE_FIRMWARE("mrvl/sd8797_uapsta.bin");