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_card_reg btmrvl_reg_88xx = {
87 .host_int_mask = 0x02,
88 .host_intstatus = 0x03,
90 .sq_read_base_addr_a0 = 0x60,
91 .sq_read_base_addr_a1 = 0x61,
92 .card_revision = 0xbc,
93 .card_fw_status0 = 0xc0,
94 .card_fw_status1 = 0xc1,
102 static const struct btmrvl_sdio_device btmrvl_sdio_sd8688 = {
103 .helper = "mrvl/sd8688_helper.bin",
104 .firmware = "mrvl/sd8688.bin",
105 .reg = &btmrvl_reg_8688,
106 .sd_blksz_fw_dl = 64,
109 static const struct btmrvl_sdio_device btmrvl_sdio_sd8787 = {
111 .firmware = "mrvl/sd8787_uapsta.bin",
112 .reg = &btmrvl_reg_87xx,
113 .sd_blksz_fw_dl = 256,
116 static const struct btmrvl_sdio_device btmrvl_sdio_sd8797 = {
118 .firmware = "mrvl/sd8797_uapsta.bin",
119 .reg = &btmrvl_reg_87xx,
120 .sd_blksz_fw_dl = 256,
123 static const struct btmrvl_sdio_device btmrvl_sdio_sd8897 = {
125 .firmware = "mrvl/sd8897_uapsta.bin",
126 .reg = &btmrvl_reg_88xx,
127 .sd_blksz_fw_dl = 256,
130 static const struct sdio_device_id btmrvl_sdio_ids[] = {
131 /* Marvell SD8688 Bluetooth device */
132 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9105),
133 .driver_data = (unsigned long) &btmrvl_sdio_sd8688 },
134 /* Marvell SD8787 Bluetooth device */
135 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911A),
136 .driver_data = (unsigned long) &btmrvl_sdio_sd8787 },
137 /* Marvell SD8787 Bluetooth AMP device */
138 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911B),
139 .driver_data = (unsigned long) &btmrvl_sdio_sd8787 },
140 /* Marvell SD8797 Bluetooth device */
141 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912A),
142 .driver_data = (unsigned long) &btmrvl_sdio_sd8797 },
143 /* Marvell SD8897 Bluetooth device */
144 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912E),
145 .driver_data = (unsigned long) &btmrvl_sdio_sd8897 },
147 { } /* Terminating entry */
150 MODULE_DEVICE_TABLE(sdio, btmrvl_sdio_ids);
152 static int btmrvl_sdio_get_rx_unit(struct btmrvl_sdio_card *card)
157 reg = sdio_readb(card->func, card->reg->card_rx_unit, &ret);
164 static int btmrvl_sdio_read_fw_status(struct btmrvl_sdio_card *card, u16 *dat)
171 fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret);
175 fws1 = sdio_readb(card->func, card->reg->card_fw_status1, &ret);
179 *dat = (((u16) fws1) << 8) | fws0;
184 static int btmrvl_sdio_read_rx_len(struct btmrvl_sdio_card *card, u16 *dat)
189 reg = sdio_readb(card->func, card->reg->card_rx_len, &ret);
191 *dat = (u16) reg << card->rx_unit;
196 static int btmrvl_sdio_enable_host_int_mask(struct btmrvl_sdio_card *card,
201 sdio_writeb(card->func, mask, card->reg->host_int_mask, &ret);
203 BT_ERR("Unable to enable the host interrupt!");
210 static int btmrvl_sdio_disable_host_int_mask(struct btmrvl_sdio_card *card,
216 host_int_mask = sdio_readb(card->func, card->reg->host_int_mask, &ret);
220 host_int_mask &= ~mask;
222 sdio_writeb(card->func, host_int_mask, card->reg->host_int_mask, &ret);
224 BT_ERR("Unable to disable the host interrupt!");
231 static int btmrvl_sdio_poll_card_status(struct btmrvl_sdio_card *card, u8 bits)
237 for (tries = 0; tries < MAX_POLL_TRIES * 1000; tries++) {
238 status = sdio_readb(card->func, card->reg->card_status, &ret);
241 if ((status & bits) == bits)
250 BT_ERR("FAILED! ret=%d", ret);
255 static int btmrvl_sdio_verify_fw_download(struct btmrvl_sdio_card *card,
261 /* Wait for firmware to become ready */
262 for (tries = 0; tries < pollnum; tries++) {
263 sdio_claim_host(card->func);
264 ret = btmrvl_sdio_read_fw_status(card, &firmwarestat);
265 sdio_release_host(card->func);
269 if (firmwarestat == FIRMWARE_READY)
278 static int btmrvl_sdio_download_helper(struct btmrvl_sdio_card *card)
280 const struct firmware *fw_helper = NULL;
281 const u8 *helper = NULL;
283 void *tmphlprbuf = NULL;
284 int tmphlprbufsz, hlprblknow, helperlen;
288 ret = request_firmware(&fw_helper, card->helper,
290 if ((ret < 0) || !fw_helper) {
291 BT_ERR("request_firmware(helper) failed, error code = %d",
297 helper = fw_helper->data;
298 helperlen = fw_helper->size;
300 BT_DBG("Downloading helper image (%d bytes), block size %d bytes",
301 helperlen, SDIO_BLOCK_SIZE);
303 tmphlprbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
305 tmphlprbuf = kzalloc(tmphlprbufsz, GFP_KERNEL);
307 BT_ERR("Unable to allocate buffer for helper."
308 " Terminating download");
313 helperbuf = (u8 *) ALIGN_ADDR(tmphlprbuf, BTSDIO_DMA_ALIGN);
315 /* Perform helper data transfer */
316 tx_len = (FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE)
321 ret = btmrvl_sdio_poll_card_status(card,
322 CARD_IO_READY | DN_LD_CARD_RDY);
324 BT_ERR("Helper download poll status timeout @ %d",
329 /* Check if there is more data? */
330 if (hlprblknow >= helperlen)
333 if (helperlen - hlprblknow < tx_len)
334 tx_len = helperlen - hlprblknow;
337 helperbuf[0] = ((tx_len & 0x000000ff) >> 0);
338 helperbuf[1] = ((tx_len & 0x0000ff00) >> 8);
339 helperbuf[2] = ((tx_len & 0x00ff0000) >> 16);
340 helperbuf[3] = ((tx_len & 0xff000000) >> 24);
342 memcpy(&helperbuf[SDIO_HEADER_LEN], &helper[hlprblknow],
345 /* Now send the data */
346 ret = sdio_writesb(card->func, card->ioport, helperbuf,
347 FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE);
349 BT_ERR("IO error during helper download @ %d",
354 hlprblknow += tx_len;
357 BT_DBG("Transferring helper image EOF block");
359 memset(helperbuf, 0x0, SDIO_BLOCK_SIZE);
361 ret = sdio_writesb(card->func, card->ioport, helperbuf,
364 BT_ERR("IO error in writing helper image EOF block");
372 release_firmware(fw_helper);
376 static int btmrvl_sdio_download_fw_w_helper(struct btmrvl_sdio_card *card)
378 const struct firmware *fw_firmware = NULL;
379 const u8 *firmware = NULL;
380 int firmwarelen, tmpfwbufsz, ret;
381 unsigned int tries, offset;
383 void *tmpfwbuf = NULL;
385 u16 len, blksz_dl = card->sd_blksz_fw_dl;
386 int txlen = 0, tx_blocks = 0, count = 0;
388 ret = request_firmware(&fw_firmware, card->firmware,
390 if ((ret < 0) || !fw_firmware) {
391 BT_ERR("request_firmware(firmware) failed, error code = %d",
397 firmware = fw_firmware->data;
398 firmwarelen = fw_firmware->size;
400 BT_DBG("Downloading FW image (%d bytes)", firmwarelen);
402 tmpfwbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
403 tmpfwbuf = kzalloc(tmpfwbufsz, GFP_KERNEL);
405 BT_ERR("Unable to allocate buffer for firmware."
406 " Terminating download");
411 /* Ensure aligned firmware buffer */
412 fwbuf = (u8 *) ALIGN_ADDR(tmpfwbuf, BTSDIO_DMA_ALIGN);
414 /* Perform firmware data transfer */
417 ret = btmrvl_sdio_poll_card_status(card,
418 CARD_IO_READY | DN_LD_CARD_RDY);
420 BT_ERR("FW download with helper poll status"
421 " timeout @ %d", offset);
425 /* Check if there is more data ? */
426 if (offset >= firmwarelen)
429 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
430 base0 = sdio_readb(card->func,
431 card->reg->sq_read_base_addr_a0, &ret);
433 BT_ERR("BASE0 register read failed:"
434 " base0 = 0x%04X(%d)."
435 " Terminating download",
440 base1 = sdio_readb(card->func,
441 card->reg->sq_read_base_addr_a1, &ret);
443 BT_ERR("BASE1 register read failed:"
444 " base1 = 0x%04X(%d)."
445 " Terminating download",
451 len = (((u16) base1) << 8) | base0;
460 else if (len > BTM_UPLD_SIZE) {
461 BT_ERR("FW download failure @%d, invalid length %d",
471 if (count > MAX_WRITE_IOMEM_RETRY) {
472 BT_ERR("FW download failure @%d, "
473 "over max retry count", offset);
477 BT_ERR("FW CRC error indicated by the helper: "
478 "len = 0x%04X, txlen = %d", len, txlen);
480 /* Set txlen to 0 so as to resend from same offset */
486 if (firmwarelen - offset < txlen)
487 txlen = firmwarelen - offset;
489 tx_blocks = DIV_ROUND_UP(txlen, blksz_dl);
491 memcpy(fwbuf, &firmware[offset], txlen);
494 ret = sdio_writesb(card->func, card->ioport, fwbuf,
495 tx_blocks * blksz_dl);
498 BT_ERR("FW download, writesb(%d) failed @%d",
500 sdio_writeb(card->func, HOST_CMD53_FIN,
501 card->reg->cfg, &ret);
503 BT_ERR("writeb failed (CFG)");
509 BT_DBG("FW download over, size %d bytes", offset);
515 release_firmware(fw_firmware);
519 static int btmrvl_sdio_card_to_host(struct btmrvl_private *priv)
522 int ret, num_blocks, blksz;
523 struct sk_buff *skb = NULL;
526 struct hci_dev *hdev = priv->btmrvl_dev.hcidev;
527 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
529 if (!card || !card->func) {
530 BT_ERR("card or function is NULL!");
535 /* Read the length of data to be transferred */
536 ret = btmrvl_sdio_read_rx_len(card, &buf_len);
538 BT_ERR("read rx_len failed");
543 blksz = SDIO_BLOCK_SIZE;
544 num_blocks = DIV_ROUND_UP(buf_len, blksz);
546 if (buf_len <= SDIO_HEADER_LEN
547 || (num_blocks * blksz) > ALLOC_BUF_SIZE) {
548 BT_ERR("invalid packet length: %d", buf_len);
553 /* Allocate buffer */
554 skb = bt_skb_alloc(num_blocks * blksz + BTSDIO_DMA_ALIGN, GFP_ATOMIC);
556 BT_ERR("No free skb");
561 if ((unsigned long) skb->data & (BTSDIO_DMA_ALIGN - 1)) {
562 skb_put(skb, (unsigned long) skb->data &
563 (BTSDIO_DMA_ALIGN - 1));
564 skb_pull(skb, (unsigned long) skb->data &
565 (BTSDIO_DMA_ALIGN - 1));
570 ret = sdio_readsb(card->func, payload, card->ioport,
573 BT_ERR("readsb failed: %d", ret);
578 /* This is SDIO specific header length: byte[2][1][0], type: byte[3]
579 * (HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor)
582 buf_len = payload[0];
583 buf_len |= payload[1] << 8;
584 buf_len |= payload[2] << 16;
586 if (buf_len > blksz * num_blocks) {
587 BT_ERR("Skip incorrect packet: hdrlen %d buffer %d",
588 buf_len, blksz * num_blocks);
596 case HCI_ACLDATA_PKT:
597 case HCI_SCODATA_PKT:
599 bt_cb(skb)->pkt_type = type;
600 skb_put(skb, buf_len);
601 skb_pull(skb, SDIO_HEADER_LEN);
603 if (type == HCI_EVENT_PKT) {
604 if (btmrvl_check_evtpkt(priv, skb))
605 hci_recv_frame(hdev, skb);
607 hci_recv_frame(hdev, skb);
610 hdev->stat.byte_rx += buf_len;
613 case MRVL_VENDOR_PKT:
614 bt_cb(skb)->pkt_type = HCI_VENDOR_PKT;
615 skb_put(skb, buf_len);
616 skb_pull(skb, SDIO_HEADER_LEN);
618 if (btmrvl_process_event(priv, skb))
619 hci_recv_frame(hdev, skb);
621 hdev->stat.byte_rx += buf_len;
625 BT_ERR("Unknown packet type:%d", type);
626 BT_ERR("hex: %*ph", blksz * num_blocks, payload);
642 static int btmrvl_sdio_process_int_status(struct btmrvl_private *priv)
646 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
648 spin_lock_irqsave(&priv->driver_lock, flags);
651 spin_unlock_irqrestore(&priv->driver_lock, flags);
653 sdio_claim_host(card->func);
654 if (ireg & DN_LD_HOST_INT_STATUS) {
655 if (priv->btmrvl_dev.tx_dnld_rdy)
656 BT_DBG("tx_done already received: "
657 " int_status=0x%x", ireg);
659 priv->btmrvl_dev.tx_dnld_rdy = true;
662 if (ireg & UP_LD_HOST_INT_STATUS)
663 btmrvl_sdio_card_to_host(priv);
665 sdio_release_host(card->func);
670 static void btmrvl_sdio_interrupt(struct sdio_func *func)
672 struct btmrvl_private *priv;
673 struct btmrvl_sdio_card *card;
678 card = sdio_get_drvdata(func);
679 if (!card || !card->priv) {
680 BT_ERR("sbi_interrupt(%p) card or priv is "
681 "NULL, card=%p\n", func, card);
687 ireg = sdio_readb(card->func, card->reg->host_intstatus, &ret);
689 BT_ERR("sdio_readb: read int status register failed");
695 * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
696 * Clear the interrupt status register and re-enable the
699 BT_DBG("ireg = 0x%x", ireg);
701 sdio_writeb(card->func, ~(ireg) & (DN_LD_HOST_INT_STATUS |
702 UP_LD_HOST_INT_STATUS),
703 card->reg->host_intstatus, &ret);
705 BT_ERR("sdio_writeb: clear int status register failed");
710 spin_lock_irqsave(&priv->driver_lock, flags);
712 spin_unlock_irqrestore(&priv->driver_lock, flags);
714 btmrvl_interrupt(priv);
717 static int btmrvl_sdio_register_dev(struct btmrvl_sdio_card *card)
719 struct sdio_func *func;
723 if (!card || !card->func) {
724 BT_ERR("Error: card or function is NULL!");
731 sdio_claim_host(func);
733 ret = sdio_enable_func(func);
735 BT_ERR("sdio_enable_func() failed: ret=%d", ret);
740 ret = sdio_claim_irq(func, btmrvl_sdio_interrupt);
742 BT_ERR("sdio_claim_irq failed: ret=%d", ret);
747 ret = sdio_set_block_size(card->func, SDIO_BLOCK_SIZE);
749 BT_ERR("cannot set SDIO block size");
754 reg = sdio_readb(func, card->reg->io_port_0, &ret);
762 reg = sdio_readb(func, card->reg->io_port_1, &ret);
768 card->ioport |= (reg << 8);
770 reg = sdio_readb(func, card->reg->io_port_2, &ret);
776 card->ioport |= (reg << 16);
778 BT_DBG("SDIO FUNC%d IO port: 0x%x", func->num, card->ioport);
780 sdio_set_drvdata(func, card);
782 sdio_release_host(func);
787 sdio_release_irq(func);
790 sdio_disable_func(func);
793 sdio_release_host(func);
799 static int btmrvl_sdio_unregister_dev(struct btmrvl_sdio_card *card)
801 if (card && card->func) {
802 sdio_claim_host(card->func);
803 sdio_release_irq(card->func);
804 sdio_disable_func(card->func);
805 sdio_release_host(card->func);
806 sdio_set_drvdata(card->func, NULL);
812 static int btmrvl_sdio_enable_host_int(struct btmrvl_sdio_card *card)
816 if (!card || !card->func)
819 sdio_claim_host(card->func);
821 ret = btmrvl_sdio_enable_host_int_mask(card, HIM_ENABLE);
823 btmrvl_sdio_get_rx_unit(card);
825 sdio_release_host(card->func);
830 static int btmrvl_sdio_disable_host_int(struct btmrvl_sdio_card *card)
834 if (!card || !card->func)
837 sdio_claim_host(card->func);
839 ret = btmrvl_sdio_disable_host_int_mask(card, HIM_DISABLE);
841 sdio_release_host(card->func);
846 static int btmrvl_sdio_host_to_card(struct btmrvl_private *priv,
849 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
858 if (!card || !card->func) {
859 BT_ERR("card or function is NULL!");
864 if ((unsigned long) payload & (BTSDIO_DMA_ALIGN - 1)) {
865 tmpbufsz = ALIGN_SZ(nb, BTSDIO_DMA_ALIGN);
866 tmpbuf = kzalloc(tmpbufsz, GFP_KERNEL);
869 buf = (u8 *) ALIGN_ADDR(tmpbuf, BTSDIO_DMA_ALIGN);
870 memcpy(buf, payload, nb);
873 blksz = SDIO_BLOCK_SIZE;
874 buf_block_len = DIV_ROUND_UP(nb, blksz);
876 sdio_claim_host(card->func);
879 /* Transfer data to card */
880 ret = sdio_writesb(card->func, card->ioport, buf,
881 buf_block_len * blksz);
884 BT_ERR("i=%d writesb failed: %d", i, ret);
885 BT_ERR("hex: %*ph", nb, payload);
887 if (i > MAX_WRITE_IOMEM_RETRY)
892 priv->btmrvl_dev.tx_dnld_rdy = false;
895 sdio_release_host(card->func);
901 static int btmrvl_sdio_download_fw(struct btmrvl_sdio_card *card)
905 int pollnum = MAX_POLL_TRIES;
907 if (!card || !card->func) {
908 BT_ERR("card or function is NULL!");
912 if (!btmrvl_sdio_verify_fw_download(card, 1)) {
913 BT_DBG("Firmware already downloaded!");
917 sdio_claim_host(card->func);
919 /* Check if other function driver is downloading the firmware */
920 fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret);
922 BT_ERR("Failed to read FW downloading status!");
927 BT_DBG("BT not the winner (%#x). Skip FW downloading", fws0);
929 /* Give other function more time to download the firmware */
933 ret = btmrvl_sdio_download_helper(card);
935 BT_ERR("Failed to download helper!");
941 if (btmrvl_sdio_download_fw_w_helper(card)) {
942 BT_ERR("Failed to download firmware!");
948 sdio_release_host(card->func);
951 * winner or not, with this test the FW synchronizes when the
952 * module can continue its initialization
954 if (btmrvl_sdio_verify_fw_download(card, pollnum)) {
955 BT_ERR("FW failed to be active in time!");
962 sdio_release_host(card->func);
966 static int btmrvl_sdio_wakeup_fw(struct btmrvl_private *priv)
968 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
971 if (!card || !card->func) {
972 BT_ERR("card or function is NULL!");
976 sdio_claim_host(card->func);
978 sdio_writeb(card->func, HOST_POWER_UP, card->reg->cfg, &ret);
980 sdio_release_host(card->func);
982 BT_DBG("wake up firmware");
987 static int btmrvl_sdio_probe(struct sdio_func *func,
988 const struct sdio_device_id *id)
991 struct btmrvl_private *priv = NULL;
992 struct btmrvl_sdio_card *card = NULL;
994 BT_INFO("vendor=0x%x, device=0x%x, class=%d, fn=%d",
995 id->vendor, id->device, id->class, func->num);
997 card = devm_kzalloc(&func->dev, sizeof(*card), GFP_KERNEL);
1003 if (id->driver_data) {
1004 struct btmrvl_sdio_device *data = (void *) id->driver_data;
1005 card->helper = data->helper;
1006 card->firmware = data->firmware;
1007 card->reg = data->reg;
1008 card->sd_blksz_fw_dl = data->sd_blksz_fw_dl;
1011 if (btmrvl_sdio_register_dev(card) < 0) {
1012 BT_ERR("Failed to register BT device!");
1016 /* Disable the interrupts on the card */
1017 btmrvl_sdio_disable_host_int(card);
1019 if (btmrvl_sdio_download_fw(card)) {
1020 BT_ERR("Downloading firmware failed!");
1025 btmrvl_sdio_enable_host_int(card);
1027 priv = btmrvl_add_card(card);
1029 BT_ERR("Initializing card failed!");
1031 goto disable_host_int;
1036 /* Initialize the interface specific function pointers */
1037 priv->hw_host_to_card = btmrvl_sdio_host_to_card;
1038 priv->hw_wakeup_firmware = btmrvl_sdio_wakeup_fw;
1039 priv->hw_process_int_status = btmrvl_sdio_process_int_status;
1041 if (btmrvl_register_hdev(priv)) {
1042 BT_ERR("Register hdev failed!");
1044 goto disable_host_int;
1050 btmrvl_sdio_disable_host_int(card);
1052 btmrvl_sdio_unregister_dev(card);
1056 static void btmrvl_sdio_remove(struct sdio_func *func)
1058 struct btmrvl_sdio_card *card;
1061 card = sdio_get_drvdata(func);
1063 /* Send SHUTDOWN command & disable interrupt
1064 * if user removes the module.
1067 btmrvl_send_module_cfg_cmd(card->priv,
1068 MODULE_SHUTDOWN_REQ);
1069 btmrvl_sdio_disable_host_int(card);
1071 BT_DBG("unregester dev");
1072 btmrvl_sdio_unregister_dev(card);
1073 btmrvl_remove_card(card->priv);
1078 static int btmrvl_sdio_suspend(struct device *dev)
1080 struct sdio_func *func = dev_to_sdio_func(dev);
1081 struct btmrvl_sdio_card *card;
1082 struct btmrvl_private *priv;
1083 mmc_pm_flag_t pm_flags;
1084 struct hci_dev *hcidev;
1087 pm_flags = sdio_get_host_pm_caps(func);
1088 BT_DBG("%s: suspend: PM flags = 0x%x", sdio_func_id(func),
1090 if (!(pm_flags & MMC_PM_KEEP_POWER)) {
1091 BT_ERR("%s: cannot remain alive while suspended",
1092 sdio_func_id(func));
1095 card = sdio_get_drvdata(func);
1096 if (!card || !card->priv) {
1097 BT_ERR("card or priv structure is not valid");
1101 BT_ERR("sdio_func is not specified");
1107 if (priv->adapter->hs_state != HS_ACTIVATED) {
1108 if (btmrvl_enable_hs(priv)) {
1109 BT_ERR("HS not actived, suspend failed!");
1113 hcidev = priv->btmrvl_dev.hcidev;
1114 BT_DBG("%s: SDIO suspend", hcidev->name);
1115 hci_suspend_dev(hcidev);
1116 skb_queue_purge(&priv->adapter->tx_queue);
1118 priv->adapter->is_suspended = true;
1120 /* We will keep the power when hs enabled successfully */
1121 if (priv->adapter->hs_state == HS_ACTIVATED) {
1122 BT_DBG("suspend with MMC_PM_KEEP_POWER");
1123 return sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
1125 BT_DBG("suspend without MMC_PM_KEEP_POWER");
1130 static int btmrvl_sdio_resume(struct device *dev)
1132 struct sdio_func *func = dev_to_sdio_func(dev);
1133 struct btmrvl_sdio_card *card;
1134 struct btmrvl_private *priv;
1135 mmc_pm_flag_t pm_flags;
1136 struct hci_dev *hcidev;
1139 pm_flags = sdio_get_host_pm_caps(func);
1140 BT_DBG("%s: resume: PM flags = 0x%x", sdio_func_id(func),
1142 card = sdio_get_drvdata(func);
1143 if (!card || !card->priv) {
1144 BT_ERR("card or priv structure is not valid");
1148 BT_ERR("sdio_func is not specified");
1153 if (!priv->adapter->is_suspended) {
1154 BT_DBG("device already resumed");
1158 priv->adapter->is_suspended = false;
1159 hcidev = priv->btmrvl_dev.hcidev;
1160 BT_DBG("%s: SDIO resume", hcidev->name);
1161 hci_resume_dev(hcidev);
1162 priv->hw_wakeup_firmware(priv);
1163 priv->adapter->hs_state = HS_DEACTIVATED;
1164 BT_DBG("%s: HS DEACTIVATED in resume!", hcidev->name);
1169 static const struct dev_pm_ops btmrvl_sdio_pm_ops = {
1170 .suspend = btmrvl_sdio_suspend,
1171 .resume = btmrvl_sdio_resume,
1174 static struct sdio_driver bt_mrvl_sdio = {
1175 .name = "btmrvl_sdio",
1176 .id_table = btmrvl_sdio_ids,
1177 .probe = btmrvl_sdio_probe,
1178 .remove = btmrvl_sdio_remove,
1180 .owner = THIS_MODULE,
1181 .pm = &btmrvl_sdio_pm_ops,
1185 static int __init btmrvl_sdio_init_module(void)
1187 if (sdio_register_driver(&bt_mrvl_sdio) != 0) {
1188 BT_ERR("SDIO Driver Registration Failed");
1192 /* Clear the flag in case user removes the card. */
1198 static void __exit btmrvl_sdio_exit_module(void)
1200 /* Set the flag as user is removing this module. */
1203 sdio_unregister_driver(&bt_mrvl_sdio);
1206 module_init(btmrvl_sdio_init_module);
1207 module_exit(btmrvl_sdio_exit_module);
1209 MODULE_AUTHOR("Marvell International Ltd.");
1210 MODULE_DESCRIPTION("Marvell BT-over-SDIO driver ver " VERSION);
1211 MODULE_VERSION(VERSION);
1212 MODULE_LICENSE("GPL v2");
1213 MODULE_FIRMWARE("mrvl/sd8688_helper.bin");
1214 MODULE_FIRMWARE("mrvl/sd8688.bin");
1215 MODULE_FIRMWARE("mrvl/sd8787_uapsta.bin");
1216 MODULE_FIRMWARE("mrvl/sd8797_uapsta.bin");
1217 MODULE_FIRMWARE("mrvl/sd8897_uapsta.bin");