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,
67 .int_read_to_clear = false,
69 static const struct btmrvl_sdio_card_reg btmrvl_reg_87xx = {
71 .host_int_mask = 0x02,
72 .host_intstatus = 0x03,
74 .sq_read_base_addr_a0 = 0x40,
75 .sq_read_base_addr_a1 = 0x41,
76 .card_revision = 0x5c,
77 .card_fw_status0 = 0x60,
78 .card_fw_status1 = 0x61,
84 .int_read_to_clear = false,
87 static const struct btmrvl_sdio_card_reg btmrvl_reg_88xx = {
89 .host_int_mask = 0x02,
90 .host_intstatus = 0x03,
92 .sq_read_base_addr_a0 = 0x60,
93 .sq_read_base_addr_a1 = 0x61,
94 .card_revision = 0xbc,
95 .card_fw_status0 = 0xc0,
96 .card_fw_status1 = 0xc1,
102 .int_read_to_clear = true,
103 .host_int_rsr = 0x01,
104 .card_misc_cfg = 0xcc,
107 static const struct btmrvl_sdio_device btmrvl_sdio_sd8688 = {
108 .helper = "mrvl/sd8688_helper.bin",
109 .firmware = "mrvl/sd8688.bin",
110 .reg = &btmrvl_reg_8688,
111 .sd_blksz_fw_dl = 64,
114 static const struct btmrvl_sdio_device btmrvl_sdio_sd8787 = {
116 .firmware = "mrvl/sd8787_uapsta.bin",
117 .reg = &btmrvl_reg_87xx,
118 .sd_blksz_fw_dl = 256,
121 static const struct btmrvl_sdio_device btmrvl_sdio_sd8797 = {
123 .firmware = "mrvl/sd8797_uapsta.bin",
124 .reg = &btmrvl_reg_87xx,
125 .sd_blksz_fw_dl = 256,
128 static const struct btmrvl_sdio_device btmrvl_sdio_sd8897 = {
130 .firmware = "mrvl/sd8897_uapsta.bin",
131 .reg = &btmrvl_reg_88xx,
132 .sd_blksz_fw_dl = 256,
135 static const struct sdio_device_id btmrvl_sdio_ids[] = {
136 /* Marvell SD8688 Bluetooth device */
137 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9105),
138 .driver_data = (unsigned long) &btmrvl_sdio_sd8688 },
139 /* Marvell SD8787 Bluetooth device */
140 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911A),
141 .driver_data = (unsigned long) &btmrvl_sdio_sd8787 },
142 /* Marvell SD8787 Bluetooth AMP device */
143 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911B),
144 .driver_data = (unsigned long) &btmrvl_sdio_sd8787 },
145 /* Marvell SD8797 Bluetooth device */
146 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912A),
147 .driver_data = (unsigned long) &btmrvl_sdio_sd8797 },
148 /* Marvell SD8897 Bluetooth device */
149 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912E),
150 .driver_data = (unsigned long) &btmrvl_sdio_sd8897 },
152 { } /* Terminating entry */
155 MODULE_DEVICE_TABLE(sdio, btmrvl_sdio_ids);
157 static int btmrvl_sdio_get_rx_unit(struct btmrvl_sdio_card *card)
162 reg = sdio_readb(card->func, card->reg->card_rx_unit, &ret);
169 static int btmrvl_sdio_read_fw_status(struct btmrvl_sdio_card *card, u16 *dat)
176 fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret);
180 fws1 = sdio_readb(card->func, card->reg->card_fw_status1, &ret);
184 *dat = (((u16) fws1) << 8) | fws0;
189 static int btmrvl_sdio_read_rx_len(struct btmrvl_sdio_card *card, u16 *dat)
194 reg = sdio_readb(card->func, card->reg->card_rx_len, &ret);
196 *dat = (u16) reg << card->rx_unit;
201 static int btmrvl_sdio_enable_host_int_mask(struct btmrvl_sdio_card *card,
206 sdio_writeb(card->func, mask, card->reg->host_int_mask, &ret);
208 BT_ERR("Unable to enable the host interrupt!");
215 static int btmrvl_sdio_disable_host_int_mask(struct btmrvl_sdio_card *card,
221 host_int_mask = sdio_readb(card->func, card->reg->host_int_mask, &ret);
225 host_int_mask &= ~mask;
227 sdio_writeb(card->func, host_int_mask, card->reg->host_int_mask, &ret);
229 BT_ERR("Unable to disable the host interrupt!");
236 static int btmrvl_sdio_poll_card_status(struct btmrvl_sdio_card *card, u8 bits)
242 for (tries = 0; tries < MAX_POLL_TRIES * 1000; tries++) {
243 status = sdio_readb(card->func, card->reg->card_status, &ret);
246 if ((status & bits) == bits)
255 BT_ERR("FAILED! ret=%d", ret);
260 static int btmrvl_sdio_verify_fw_download(struct btmrvl_sdio_card *card,
266 /* Wait for firmware to become ready */
267 for (tries = 0; tries < pollnum; tries++) {
268 sdio_claim_host(card->func);
269 ret = btmrvl_sdio_read_fw_status(card, &firmwarestat);
270 sdio_release_host(card->func);
274 if (firmwarestat == FIRMWARE_READY)
283 static int btmrvl_sdio_download_helper(struct btmrvl_sdio_card *card)
285 const struct firmware *fw_helper = NULL;
286 const u8 *helper = NULL;
288 void *tmphlprbuf = NULL;
289 int tmphlprbufsz, hlprblknow, helperlen;
293 ret = request_firmware(&fw_helper, card->helper,
295 if ((ret < 0) || !fw_helper) {
296 BT_ERR("request_firmware(helper) failed, error code = %d",
302 helper = fw_helper->data;
303 helperlen = fw_helper->size;
305 BT_DBG("Downloading helper image (%d bytes), block size %d bytes",
306 helperlen, SDIO_BLOCK_SIZE);
308 tmphlprbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
310 tmphlprbuf = kzalloc(tmphlprbufsz, GFP_KERNEL);
312 BT_ERR("Unable to allocate buffer for helper."
313 " Terminating download");
318 helperbuf = (u8 *) ALIGN_ADDR(tmphlprbuf, BTSDIO_DMA_ALIGN);
320 /* Perform helper data transfer */
321 tx_len = (FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE)
326 ret = btmrvl_sdio_poll_card_status(card,
327 CARD_IO_READY | DN_LD_CARD_RDY);
329 BT_ERR("Helper download poll status timeout @ %d",
334 /* Check if there is more data? */
335 if (hlprblknow >= helperlen)
338 if (helperlen - hlprblknow < tx_len)
339 tx_len = helperlen - hlprblknow;
342 helperbuf[0] = ((tx_len & 0x000000ff) >> 0);
343 helperbuf[1] = ((tx_len & 0x0000ff00) >> 8);
344 helperbuf[2] = ((tx_len & 0x00ff0000) >> 16);
345 helperbuf[3] = ((tx_len & 0xff000000) >> 24);
347 memcpy(&helperbuf[SDIO_HEADER_LEN], &helper[hlprblknow],
350 /* Now send the data */
351 ret = sdio_writesb(card->func, card->ioport, helperbuf,
352 FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE);
354 BT_ERR("IO error during helper download @ %d",
359 hlprblknow += tx_len;
362 BT_DBG("Transferring helper image EOF block");
364 memset(helperbuf, 0x0, SDIO_BLOCK_SIZE);
366 ret = sdio_writesb(card->func, card->ioport, helperbuf,
369 BT_ERR("IO error in writing helper image EOF block");
377 release_firmware(fw_helper);
381 static int btmrvl_sdio_download_fw_w_helper(struct btmrvl_sdio_card *card)
383 const struct firmware *fw_firmware = NULL;
384 const u8 *firmware = NULL;
385 int firmwarelen, tmpfwbufsz, ret;
386 unsigned int tries, offset;
388 void *tmpfwbuf = NULL;
390 u16 len, blksz_dl = card->sd_blksz_fw_dl;
391 int txlen = 0, tx_blocks = 0, count = 0;
393 ret = request_firmware(&fw_firmware, card->firmware,
395 if ((ret < 0) || !fw_firmware) {
396 BT_ERR("request_firmware(firmware) failed, error code = %d",
402 firmware = fw_firmware->data;
403 firmwarelen = fw_firmware->size;
405 BT_DBG("Downloading FW image (%d bytes)", firmwarelen);
407 tmpfwbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
408 tmpfwbuf = kzalloc(tmpfwbufsz, GFP_KERNEL);
410 BT_ERR("Unable to allocate buffer for firmware."
411 " Terminating download");
416 /* Ensure aligned firmware buffer */
417 fwbuf = (u8 *) ALIGN_ADDR(tmpfwbuf, BTSDIO_DMA_ALIGN);
419 /* Perform firmware data transfer */
422 ret = btmrvl_sdio_poll_card_status(card,
423 CARD_IO_READY | DN_LD_CARD_RDY);
425 BT_ERR("FW download with helper poll status"
426 " timeout @ %d", offset);
430 /* Check if there is more data ? */
431 if (offset >= firmwarelen)
434 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
435 base0 = sdio_readb(card->func,
436 card->reg->sq_read_base_addr_a0, &ret);
438 BT_ERR("BASE0 register read failed:"
439 " base0 = 0x%04X(%d)."
440 " Terminating download",
445 base1 = sdio_readb(card->func,
446 card->reg->sq_read_base_addr_a1, &ret);
448 BT_ERR("BASE1 register read failed:"
449 " base1 = 0x%04X(%d)."
450 " Terminating download",
456 len = (((u16) base1) << 8) | base0;
465 else if (len > BTM_UPLD_SIZE) {
466 BT_ERR("FW download failure @%d, invalid length %d",
476 if (count > MAX_WRITE_IOMEM_RETRY) {
477 BT_ERR("FW download failure @%d, "
478 "over max retry count", offset);
482 BT_ERR("FW CRC error indicated by the helper: "
483 "len = 0x%04X, txlen = %d", len, txlen);
485 /* Set txlen to 0 so as to resend from same offset */
491 if (firmwarelen - offset < txlen)
492 txlen = firmwarelen - offset;
494 tx_blocks = DIV_ROUND_UP(txlen, blksz_dl);
496 memcpy(fwbuf, &firmware[offset], txlen);
499 ret = sdio_writesb(card->func, card->ioport, fwbuf,
500 tx_blocks * blksz_dl);
503 BT_ERR("FW download, writesb(%d) failed @%d",
505 sdio_writeb(card->func, HOST_CMD53_FIN,
506 card->reg->cfg, &ret);
508 BT_ERR("writeb failed (CFG)");
514 BT_DBG("FW download over, size %d bytes", offset);
520 release_firmware(fw_firmware);
524 static int btmrvl_sdio_card_to_host(struct btmrvl_private *priv)
527 int ret, num_blocks, blksz;
528 struct sk_buff *skb = NULL;
531 struct hci_dev *hdev = priv->btmrvl_dev.hcidev;
532 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
534 if (!card || !card->func) {
535 BT_ERR("card or function is NULL!");
540 /* Read the length of data to be transferred */
541 ret = btmrvl_sdio_read_rx_len(card, &buf_len);
543 BT_ERR("read rx_len failed");
548 blksz = SDIO_BLOCK_SIZE;
549 num_blocks = DIV_ROUND_UP(buf_len, blksz);
551 if (buf_len <= SDIO_HEADER_LEN
552 || (num_blocks * blksz) > ALLOC_BUF_SIZE) {
553 BT_ERR("invalid packet length: %d", buf_len);
558 /* Allocate buffer */
559 skb = bt_skb_alloc(num_blocks * blksz + BTSDIO_DMA_ALIGN, GFP_ATOMIC);
561 BT_ERR("No free skb");
566 if ((unsigned long) skb->data & (BTSDIO_DMA_ALIGN - 1)) {
567 skb_put(skb, (unsigned long) skb->data &
568 (BTSDIO_DMA_ALIGN - 1));
569 skb_pull(skb, (unsigned long) skb->data &
570 (BTSDIO_DMA_ALIGN - 1));
575 ret = sdio_readsb(card->func, payload, card->ioport,
578 BT_ERR("readsb failed: %d", ret);
583 /* This is SDIO specific header length: byte[2][1][0], type: byte[3]
584 * (HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor)
587 buf_len = payload[0];
588 buf_len |= payload[1] << 8;
589 buf_len |= payload[2] << 16;
591 if (buf_len > blksz * num_blocks) {
592 BT_ERR("Skip incorrect packet: hdrlen %d buffer %d",
593 buf_len, blksz * num_blocks);
601 case HCI_ACLDATA_PKT:
602 case HCI_SCODATA_PKT:
604 bt_cb(skb)->pkt_type = type;
605 skb_put(skb, buf_len);
606 skb_pull(skb, SDIO_HEADER_LEN);
608 if (type == HCI_EVENT_PKT) {
609 if (btmrvl_check_evtpkt(priv, skb))
610 hci_recv_frame(hdev, skb);
612 hci_recv_frame(hdev, skb);
615 hdev->stat.byte_rx += buf_len;
618 case MRVL_VENDOR_PKT:
619 bt_cb(skb)->pkt_type = HCI_VENDOR_PKT;
620 skb_put(skb, buf_len);
621 skb_pull(skb, SDIO_HEADER_LEN);
623 if (btmrvl_process_event(priv, skb))
624 hci_recv_frame(hdev, skb);
626 hdev->stat.byte_rx += buf_len;
630 BT_ERR("Unknown packet type:%d", type);
631 BT_ERR("hex: %*ph", blksz * num_blocks, payload);
647 static int btmrvl_sdio_process_int_status(struct btmrvl_private *priv)
651 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
653 spin_lock_irqsave(&priv->driver_lock, flags);
656 spin_unlock_irqrestore(&priv->driver_lock, flags);
658 sdio_claim_host(card->func);
659 if (ireg & DN_LD_HOST_INT_STATUS) {
660 if (priv->btmrvl_dev.tx_dnld_rdy)
661 BT_DBG("tx_done already received: "
662 " int_status=0x%x", ireg);
664 priv->btmrvl_dev.tx_dnld_rdy = true;
667 if (ireg & UP_LD_HOST_INT_STATUS)
668 btmrvl_sdio_card_to_host(priv);
670 sdio_release_host(card->func);
675 static int btmrvl_sdio_read_to_clear(struct btmrvl_sdio_card *card, u8 *ireg)
677 struct btmrvl_adapter *adapter = card->priv->adapter;
680 ret = sdio_readsb(card->func, adapter->hw_regs, 0, SDIO_BLOCK_SIZE);
682 BT_ERR("sdio_readsb: read int hw_regs failed: %d", ret);
686 *ireg = adapter->hw_regs[card->reg->host_intstatus];
687 BT_DBG("hw_regs[%#x]=%#x", card->reg->host_intstatus, *ireg);
692 static int btmrvl_sdio_write_to_clear(struct btmrvl_sdio_card *card, u8 *ireg)
696 *ireg = sdio_readb(card->func, card->reg->host_intstatus, &ret);
698 BT_ERR("sdio_readb: read int status failed: %d", ret);
704 * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
705 * Clear the interrupt status register and re-enable the
708 BT_DBG("int_status = 0x%x", *ireg);
710 sdio_writeb(card->func, ~(*ireg) & (DN_LD_HOST_INT_STATUS |
711 UP_LD_HOST_INT_STATUS),
712 card->reg->host_intstatus, &ret);
714 BT_ERR("sdio_writeb: clear int status failed: %d", ret);
722 static void btmrvl_sdio_interrupt(struct sdio_func *func)
724 struct btmrvl_private *priv;
725 struct btmrvl_sdio_card *card;
730 card = sdio_get_drvdata(func);
731 if (!card || !card->priv) {
732 BT_ERR("sbi_interrupt(%p) card or priv is "
733 "NULL, card=%p\n", func, card);
739 if (card->reg->int_read_to_clear)
740 ret = btmrvl_sdio_read_to_clear(card, &ireg);
742 ret = btmrvl_sdio_write_to_clear(card, &ireg);
747 spin_lock_irqsave(&priv->driver_lock, flags);
749 spin_unlock_irqrestore(&priv->driver_lock, flags);
751 btmrvl_interrupt(priv);
754 static int btmrvl_sdio_register_dev(struct btmrvl_sdio_card *card)
756 struct sdio_func *func;
760 if (!card || !card->func) {
761 BT_ERR("Error: card or function is NULL!");
768 sdio_claim_host(func);
770 ret = sdio_enable_func(func);
772 BT_ERR("sdio_enable_func() failed: ret=%d", ret);
777 ret = sdio_claim_irq(func, btmrvl_sdio_interrupt);
779 BT_ERR("sdio_claim_irq failed: ret=%d", ret);
784 ret = sdio_set_block_size(card->func, SDIO_BLOCK_SIZE);
786 BT_ERR("cannot set SDIO block size");
791 reg = sdio_readb(func, card->reg->io_port_0, &ret);
799 reg = sdio_readb(func, card->reg->io_port_1, &ret);
805 card->ioport |= (reg << 8);
807 reg = sdio_readb(func, card->reg->io_port_2, &ret);
813 card->ioport |= (reg << 16);
815 BT_DBG("SDIO FUNC%d IO port: 0x%x", func->num, card->ioport);
817 if (card->reg->int_read_to_clear) {
818 reg = sdio_readb(func, card->reg->host_int_rsr, &ret);
823 sdio_writeb(func, reg | 0x3f, card->reg->host_int_rsr, &ret);
829 reg = sdio_readb(func, card->reg->card_misc_cfg, &ret);
834 sdio_writeb(func, reg | 0x10, card->reg->card_misc_cfg, &ret);
841 sdio_set_drvdata(func, card);
843 sdio_release_host(func);
848 sdio_release_irq(func);
851 sdio_disable_func(func);
854 sdio_release_host(func);
860 static int btmrvl_sdio_unregister_dev(struct btmrvl_sdio_card *card)
862 if (card && card->func) {
863 sdio_claim_host(card->func);
864 sdio_release_irq(card->func);
865 sdio_disable_func(card->func);
866 sdio_release_host(card->func);
867 sdio_set_drvdata(card->func, NULL);
873 static int btmrvl_sdio_enable_host_int(struct btmrvl_sdio_card *card)
877 if (!card || !card->func)
880 sdio_claim_host(card->func);
882 ret = btmrvl_sdio_enable_host_int_mask(card, HIM_ENABLE);
884 btmrvl_sdio_get_rx_unit(card);
886 sdio_release_host(card->func);
891 static int btmrvl_sdio_disable_host_int(struct btmrvl_sdio_card *card)
895 if (!card || !card->func)
898 sdio_claim_host(card->func);
900 ret = btmrvl_sdio_disable_host_int_mask(card, HIM_DISABLE);
902 sdio_release_host(card->func);
907 static int btmrvl_sdio_host_to_card(struct btmrvl_private *priv,
910 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
919 if (!card || !card->func) {
920 BT_ERR("card or function is NULL!");
925 if ((unsigned long) payload & (BTSDIO_DMA_ALIGN - 1)) {
926 tmpbufsz = ALIGN_SZ(nb, BTSDIO_DMA_ALIGN);
927 tmpbuf = kzalloc(tmpbufsz, GFP_KERNEL);
930 buf = (u8 *) ALIGN_ADDR(tmpbuf, BTSDIO_DMA_ALIGN);
931 memcpy(buf, payload, nb);
934 blksz = SDIO_BLOCK_SIZE;
935 buf_block_len = DIV_ROUND_UP(nb, blksz);
937 sdio_claim_host(card->func);
940 /* Transfer data to card */
941 ret = sdio_writesb(card->func, card->ioport, buf,
942 buf_block_len * blksz);
945 BT_ERR("i=%d writesb failed: %d", i, ret);
946 BT_ERR("hex: %*ph", nb, payload);
948 if (i > MAX_WRITE_IOMEM_RETRY)
953 priv->btmrvl_dev.tx_dnld_rdy = false;
956 sdio_release_host(card->func);
962 static int btmrvl_sdio_download_fw(struct btmrvl_sdio_card *card)
966 int pollnum = MAX_POLL_TRIES;
968 if (!card || !card->func) {
969 BT_ERR("card or function is NULL!");
973 if (!btmrvl_sdio_verify_fw_download(card, 1)) {
974 BT_DBG("Firmware already downloaded!");
978 sdio_claim_host(card->func);
980 /* Check if other function driver is downloading the firmware */
981 fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret);
983 BT_ERR("Failed to read FW downloading status!");
988 BT_DBG("BT not the winner (%#x). Skip FW downloading", fws0);
990 /* Give other function more time to download the firmware */
994 ret = btmrvl_sdio_download_helper(card);
996 BT_ERR("Failed to download helper!");
1002 if (btmrvl_sdio_download_fw_w_helper(card)) {
1003 BT_ERR("Failed to download firmware!");
1009 sdio_release_host(card->func);
1012 * winner or not, with this test the FW synchronizes when the
1013 * module can continue its initialization
1015 if (btmrvl_sdio_verify_fw_download(card, pollnum)) {
1016 BT_ERR("FW failed to be active in time!");
1023 sdio_release_host(card->func);
1027 static int btmrvl_sdio_wakeup_fw(struct btmrvl_private *priv)
1029 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1032 if (!card || !card->func) {
1033 BT_ERR("card or function is NULL!");
1037 sdio_claim_host(card->func);
1039 sdio_writeb(card->func, HOST_POWER_UP, card->reg->cfg, &ret);
1041 sdio_release_host(card->func);
1043 BT_DBG("wake up firmware");
1048 static int btmrvl_sdio_probe(struct sdio_func *func,
1049 const struct sdio_device_id *id)
1052 struct btmrvl_private *priv = NULL;
1053 struct btmrvl_sdio_card *card = NULL;
1055 BT_INFO("vendor=0x%x, device=0x%x, class=%d, fn=%d",
1056 id->vendor, id->device, id->class, func->num);
1058 card = devm_kzalloc(&func->dev, sizeof(*card), GFP_KERNEL);
1064 if (id->driver_data) {
1065 struct btmrvl_sdio_device *data = (void *) id->driver_data;
1066 card->helper = data->helper;
1067 card->firmware = data->firmware;
1068 card->reg = data->reg;
1069 card->sd_blksz_fw_dl = data->sd_blksz_fw_dl;
1072 if (btmrvl_sdio_register_dev(card) < 0) {
1073 BT_ERR("Failed to register BT device!");
1077 /* Disable the interrupts on the card */
1078 btmrvl_sdio_disable_host_int(card);
1080 if (btmrvl_sdio_download_fw(card)) {
1081 BT_ERR("Downloading firmware failed!");
1086 btmrvl_sdio_enable_host_int(card);
1088 priv = btmrvl_add_card(card);
1090 BT_ERR("Initializing card failed!");
1092 goto disable_host_int;
1097 /* Initialize the interface specific function pointers */
1098 priv->hw_host_to_card = btmrvl_sdio_host_to_card;
1099 priv->hw_wakeup_firmware = btmrvl_sdio_wakeup_fw;
1100 priv->hw_process_int_status = btmrvl_sdio_process_int_status;
1102 if (btmrvl_register_hdev(priv)) {
1103 BT_ERR("Register hdev failed!");
1105 goto disable_host_int;
1111 btmrvl_sdio_disable_host_int(card);
1113 btmrvl_sdio_unregister_dev(card);
1117 static void btmrvl_sdio_remove(struct sdio_func *func)
1119 struct btmrvl_sdio_card *card;
1122 card = sdio_get_drvdata(func);
1124 /* Send SHUTDOWN command & disable interrupt
1125 * if user removes the module.
1128 btmrvl_send_module_cfg_cmd(card->priv,
1129 MODULE_SHUTDOWN_REQ);
1130 btmrvl_sdio_disable_host_int(card);
1132 BT_DBG("unregester dev");
1133 btmrvl_sdio_unregister_dev(card);
1134 btmrvl_remove_card(card->priv);
1139 static int btmrvl_sdio_suspend(struct device *dev)
1141 struct sdio_func *func = dev_to_sdio_func(dev);
1142 struct btmrvl_sdio_card *card;
1143 struct btmrvl_private *priv;
1144 mmc_pm_flag_t pm_flags;
1145 struct hci_dev *hcidev;
1148 pm_flags = sdio_get_host_pm_caps(func);
1149 BT_DBG("%s: suspend: PM flags = 0x%x", sdio_func_id(func),
1151 if (!(pm_flags & MMC_PM_KEEP_POWER)) {
1152 BT_ERR("%s: cannot remain alive while suspended",
1153 sdio_func_id(func));
1156 card = sdio_get_drvdata(func);
1157 if (!card || !card->priv) {
1158 BT_ERR("card or priv structure is not valid");
1162 BT_ERR("sdio_func is not specified");
1168 if (priv->adapter->hs_state != HS_ACTIVATED) {
1169 if (btmrvl_enable_hs(priv)) {
1170 BT_ERR("HS not actived, suspend failed!");
1174 hcidev = priv->btmrvl_dev.hcidev;
1175 BT_DBG("%s: SDIO suspend", hcidev->name);
1176 hci_suspend_dev(hcidev);
1177 skb_queue_purge(&priv->adapter->tx_queue);
1179 priv->adapter->is_suspended = true;
1181 /* We will keep the power when hs enabled successfully */
1182 if (priv->adapter->hs_state == HS_ACTIVATED) {
1183 BT_DBG("suspend with MMC_PM_KEEP_POWER");
1184 return sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
1186 BT_DBG("suspend without MMC_PM_KEEP_POWER");
1191 static int btmrvl_sdio_resume(struct device *dev)
1193 struct sdio_func *func = dev_to_sdio_func(dev);
1194 struct btmrvl_sdio_card *card;
1195 struct btmrvl_private *priv;
1196 mmc_pm_flag_t pm_flags;
1197 struct hci_dev *hcidev;
1200 pm_flags = sdio_get_host_pm_caps(func);
1201 BT_DBG("%s: resume: PM flags = 0x%x", sdio_func_id(func),
1203 card = sdio_get_drvdata(func);
1204 if (!card || !card->priv) {
1205 BT_ERR("card or priv structure is not valid");
1209 BT_ERR("sdio_func is not specified");
1214 if (!priv->adapter->is_suspended) {
1215 BT_DBG("device already resumed");
1219 priv->adapter->is_suspended = false;
1220 hcidev = priv->btmrvl_dev.hcidev;
1221 BT_DBG("%s: SDIO resume", hcidev->name);
1222 hci_resume_dev(hcidev);
1223 priv->hw_wakeup_firmware(priv);
1224 priv->adapter->hs_state = HS_DEACTIVATED;
1225 BT_DBG("%s: HS DEACTIVATED in resume!", hcidev->name);
1230 static const struct dev_pm_ops btmrvl_sdio_pm_ops = {
1231 .suspend = btmrvl_sdio_suspend,
1232 .resume = btmrvl_sdio_resume,
1235 static struct sdio_driver bt_mrvl_sdio = {
1236 .name = "btmrvl_sdio",
1237 .id_table = btmrvl_sdio_ids,
1238 .probe = btmrvl_sdio_probe,
1239 .remove = btmrvl_sdio_remove,
1241 .owner = THIS_MODULE,
1242 .pm = &btmrvl_sdio_pm_ops,
1246 static int __init btmrvl_sdio_init_module(void)
1248 if (sdio_register_driver(&bt_mrvl_sdio) != 0) {
1249 BT_ERR("SDIO Driver Registration Failed");
1253 /* Clear the flag in case user removes the card. */
1259 static void __exit btmrvl_sdio_exit_module(void)
1261 /* Set the flag as user is removing this module. */
1264 sdio_unregister_driver(&bt_mrvl_sdio);
1267 module_init(btmrvl_sdio_init_module);
1268 module_exit(btmrvl_sdio_exit_module);
1270 MODULE_AUTHOR("Marvell International Ltd.");
1271 MODULE_DESCRIPTION("Marvell BT-over-SDIO driver ver " VERSION);
1272 MODULE_VERSION(VERSION);
1273 MODULE_LICENSE("GPL v2");
1274 MODULE_FIRMWARE("mrvl/sd8688_helper.bin");
1275 MODULE_FIRMWARE("mrvl/sd8688.bin");
1276 MODULE_FIRMWARE("mrvl/sd8787_uapsta.bin");
1277 MODULE_FIRMWARE("mrvl/sd8797_uapsta.bin");
1278 MODULE_FIRMWARE("mrvl/sd8897_uapsta.bin");