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 .support_pscan_win_report = false,
112 .sd_blksz_fw_dl = 64,
115 static const struct btmrvl_sdio_device btmrvl_sdio_sd8787 = {
117 .firmware = "mrvl/sd8787_uapsta.bin",
118 .reg = &btmrvl_reg_87xx,
119 .support_pscan_win_report = false,
120 .sd_blksz_fw_dl = 256,
123 static const struct btmrvl_sdio_device btmrvl_sdio_sd8797 = {
125 .firmware = "mrvl/sd8797_uapsta.bin",
126 .reg = &btmrvl_reg_87xx,
127 .support_pscan_win_report = false,
128 .sd_blksz_fw_dl = 256,
131 static const struct btmrvl_sdio_device btmrvl_sdio_sd8897 = {
133 .firmware = "mrvl/sd8897_uapsta.bin",
134 .reg = &btmrvl_reg_88xx,
135 .support_pscan_win_report = true,
136 .sd_blksz_fw_dl = 256,
139 static const struct sdio_device_id btmrvl_sdio_ids[] = {
140 /* Marvell SD8688 Bluetooth device */
141 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9105),
142 .driver_data = (unsigned long) &btmrvl_sdio_sd8688 },
143 /* Marvell SD8787 Bluetooth device */
144 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911A),
145 .driver_data = (unsigned long) &btmrvl_sdio_sd8787 },
146 /* Marvell SD8787 Bluetooth AMP device */
147 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911B),
148 .driver_data = (unsigned long) &btmrvl_sdio_sd8787 },
149 /* Marvell SD8797 Bluetooth device */
150 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912A),
151 .driver_data = (unsigned long) &btmrvl_sdio_sd8797 },
152 /* Marvell SD8897 Bluetooth device */
153 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912E),
154 .driver_data = (unsigned long) &btmrvl_sdio_sd8897 },
156 { } /* Terminating entry */
159 MODULE_DEVICE_TABLE(sdio, btmrvl_sdio_ids);
161 static int btmrvl_sdio_get_rx_unit(struct btmrvl_sdio_card *card)
166 reg = sdio_readb(card->func, card->reg->card_rx_unit, &ret);
173 static int btmrvl_sdio_read_fw_status(struct btmrvl_sdio_card *card, u16 *dat)
180 fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret);
184 fws1 = sdio_readb(card->func, card->reg->card_fw_status1, &ret);
188 *dat = (((u16) fws1) << 8) | fws0;
193 static int btmrvl_sdio_read_rx_len(struct btmrvl_sdio_card *card, u16 *dat)
198 reg = sdio_readb(card->func, card->reg->card_rx_len, &ret);
200 *dat = (u16) reg << card->rx_unit;
205 static int btmrvl_sdio_enable_host_int_mask(struct btmrvl_sdio_card *card,
210 sdio_writeb(card->func, mask, card->reg->host_int_mask, &ret);
212 BT_ERR("Unable to enable the host interrupt!");
219 static int btmrvl_sdio_disable_host_int_mask(struct btmrvl_sdio_card *card,
225 host_int_mask = sdio_readb(card->func, card->reg->host_int_mask, &ret);
229 host_int_mask &= ~mask;
231 sdio_writeb(card->func, host_int_mask, card->reg->host_int_mask, &ret);
233 BT_ERR("Unable to disable the host interrupt!");
240 static int btmrvl_sdio_poll_card_status(struct btmrvl_sdio_card *card, u8 bits)
246 for (tries = 0; tries < MAX_POLL_TRIES * 1000; tries++) {
247 status = sdio_readb(card->func, card->reg->card_status, &ret);
250 if ((status & bits) == bits)
259 BT_ERR("FAILED! ret=%d", ret);
264 static int btmrvl_sdio_verify_fw_download(struct btmrvl_sdio_card *card,
270 /* Wait for firmware to become ready */
271 for (tries = 0; tries < pollnum; tries++) {
272 sdio_claim_host(card->func);
273 ret = btmrvl_sdio_read_fw_status(card, &firmwarestat);
274 sdio_release_host(card->func);
278 if (firmwarestat == FIRMWARE_READY)
287 static int btmrvl_sdio_download_helper(struct btmrvl_sdio_card *card)
289 const struct firmware *fw_helper = NULL;
290 const u8 *helper = NULL;
292 void *tmphlprbuf = NULL;
293 int tmphlprbufsz, hlprblknow, helperlen;
297 ret = request_firmware(&fw_helper, card->helper,
299 if ((ret < 0) || !fw_helper) {
300 BT_ERR("request_firmware(helper) failed, error code = %d",
306 helper = fw_helper->data;
307 helperlen = fw_helper->size;
309 BT_DBG("Downloading helper image (%d bytes), block size %d bytes",
310 helperlen, SDIO_BLOCK_SIZE);
312 tmphlprbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
314 tmphlprbuf = kzalloc(tmphlprbufsz, GFP_KERNEL);
316 BT_ERR("Unable to allocate buffer for helper."
317 " Terminating download");
322 helperbuf = (u8 *) ALIGN_ADDR(tmphlprbuf, BTSDIO_DMA_ALIGN);
324 /* Perform helper data transfer */
325 tx_len = (FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE)
330 ret = btmrvl_sdio_poll_card_status(card,
331 CARD_IO_READY | DN_LD_CARD_RDY);
333 BT_ERR("Helper download poll status timeout @ %d",
338 /* Check if there is more data? */
339 if (hlprblknow >= helperlen)
342 if (helperlen - hlprblknow < tx_len)
343 tx_len = helperlen - hlprblknow;
346 helperbuf[0] = ((tx_len & 0x000000ff) >> 0);
347 helperbuf[1] = ((tx_len & 0x0000ff00) >> 8);
348 helperbuf[2] = ((tx_len & 0x00ff0000) >> 16);
349 helperbuf[3] = ((tx_len & 0xff000000) >> 24);
351 memcpy(&helperbuf[SDIO_HEADER_LEN], &helper[hlprblknow],
354 /* Now send the data */
355 ret = sdio_writesb(card->func, card->ioport, helperbuf,
356 FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE);
358 BT_ERR("IO error during helper download @ %d",
363 hlprblknow += tx_len;
366 BT_DBG("Transferring helper image EOF block");
368 memset(helperbuf, 0x0, SDIO_BLOCK_SIZE);
370 ret = sdio_writesb(card->func, card->ioport, helperbuf,
373 BT_ERR("IO error in writing helper image EOF block");
381 release_firmware(fw_helper);
385 static int btmrvl_sdio_download_fw_w_helper(struct btmrvl_sdio_card *card)
387 const struct firmware *fw_firmware = NULL;
388 const u8 *firmware = NULL;
389 int firmwarelen, tmpfwbufsz, ret;
390 unsigned int tries, offset;
392 void *tmpfwbuf = NULL;
394 u16 len, blksz_dl = card->sd_blksz_fw_dl;
395 int txlen = 0, tx_blocks = 0, count = 0;
397 ret = request_firmware(&fw_firmware, card->firmware,
399 if ((ret < 0) || !fw_firmware) {
400 BT_ERR("request_firmware(firmware) failed, error code = %d",
406 firmware = fw_firmware->data;
407 firmwarelen = fw_firmware->size;
409 BT_DBG("Downloading FW image (%d bytes)", firmwarelen);
411 tmpfwbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
412 tmpfwbuf = kzalloc(tmpfwbufsz, GFP_KERNEL);
414 BT_ERR("Unable to allocate buffer for firmware."
415 " Terminating download");
420 /* Ensure aligned firmware buffer */
421 fwbuf = (u8 *) ALIGN_ADDR(tmpfwbuf, BTSDIO_DMA_ALIGN);
423 /* Perform firmware data transfer */
426 ret = btmrvl_sdio_poll_card_status(card,
427 CARD_IO_READY | DN_LD_CARD_RDY);
429 BT_ERR("FW download with helper poll status"
430 " timeout @ %d", offset);
434 /* Check if there is more data ? */
435 if (offset >= firmwarelen)
438 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
439 base0 = sdio_readb(card->func,
440 card->reg->sq_read_base_addr_a0, &ret);
442 BT_ERR("BASE0 register read failed:"
443 " base0 = 0x%04X(%d)."
444 " Terminating download",
449 base1 = sdio_readb(card->func,
450 card->reg->sq_read_base_addr_a1, &ret);
452 BT_ERR("BASE1 register read failed:"
453 " base1 = 0x%04X(%d)."
454 " Terminating download",
460 len = (((u16) base1) << 8) | base0;
469 else if (len > BTM_UPLD_SIZE) {
470 BT_ERR("FW download failure @%d, invalid length %d",
480 if (count > MAX_WRITE_IOMEM_RETRY) {
481 BT_ERR("FW download failure @%d, "
482 "over max retry count", offset);
486 BT_ERR("FW CRC error indicated by the helper: "
487 "len = 0x%04X, txlen = %d", len, txlen);
489 /* Set txlen to 0 so as to resend from same offset */
495 if (firmwarelen - offset < txlen)
496 txlen = firmwarelen - offset;
498 tx_blocks = DIV_ROUND_UP(txlen, blksz_dl);
500 memcpy(fwbuf, &firmware[offset], txlen);
503 ret = sdio_writesb(card->func, card->ioport, fwbuf,
504 tx_blocks * blksz_dl);
507 BT_ERR("FW download, writesb(%d) failed @%d",
509 sdio_writeb(card->func, HOST_CMD53_FIN,
510 card->reg->cfg, &ret);
512 BT_ERR("writeb failed (CFG)");
518 BT_DBG("FW download over, size %d bytes", offset);
524 release_firmware(fw_firmware);
528 static int btmrvl_sdio_card_to_host(struct btmrvl_private *priv)
531 int ret, num_blocks, blksz;
532 struct sk_buff *skb = NULL;
535 struct hci_dev *hdev = priv->btmrvl_dev.hcidev;
536 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
538 if (!card || !card->func) {
539 BT_ERR("card or function is NULL!");
544 /* Read the length of data to be transferred */
545 ret = btmrvl_sdio_read_rx_len(card, &buf_len);
547 BT_ERR("read rx_len failed");
552 blksz = SDIO_BLOCK_SIZE;
553 num_blocks = DIV_ROUND_UP(buf_len, blksz);
555 if (buf_len <= SDIO_HEADER_LEN
556 || (num_blocks * blksz) > ALLOC_BUF_SIZE) {
557 BT_ERR("invalid packet length: %d", buf_len);
562 /* Allocate buffer */
563 skb = bt_skb_alloc(num_blocks * blksz + BTSDIO_DMA_ALIGN, GFP_ATOMIC);
565 BT_ERR("No free skb");
570 if ((unsigned long) skb->data & (BTSDIO_DMA_ALIGN - 1)) {
571 skb_put(skb, (unsigned long) skb->data &
572 (BTSDIO_DMA_ALIGN - 1));
573 skb_pull(skb, (unsigned long) skb->data &
574 (BTSDIO_DMA_ALIGN - 1));
579 ret = sdio_readsb(card->func, payload, card->ioport,
582 BT_ERR("readsb failed: %d", ret);
587 /* This is SDIO specific header length: byte[2][1][0], type: byte[3]
588 * (HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor)
591 buf_len = payload[0];
592 buf_len |= payload[1] << 8;
593 buf_len |= payload[2] << 16;
595 if (buf_len > blksz * num_blocks) {
596 BT_ERR("Skip incorrect packet: hdrlen %d buffer %d",
597 buf_len, blksz * num_blocks);
605 case HCI_ACLDATA_PKT:
606 case HCI_SCODATA_PKT:
608 bt_cb(skb)->pkt_type = type;
609 skb_put(skb, buf_len);
610 skb_pull(skb, SDIO_HEADER_LEN);
612 if (type == HCI_EVENT_PKT) {
613 if (btmrvl_check_evtpkt(priv, skb))
614 hci_recv_frame(hdev, skb);
616 hci_recv_frame(hdev, skb);
619 hdev->stat.byte_rx += buf_len;
622 case MRVL_VENDOR_PKT:
623 bt_cb(skb)->pkt_type = HCI_VENDOR_PKT;
624 skb_put(skb, buf_len);
625 skb_pull(skb, SDIO_HEADER_LEN);
627 if (btmrvl_process_event(priv, skb))
628 hci_recv_frame(hdev, skb);
630 hdev->stat.byte_rx += buf_len;
634 BT_ERR("Unknown packet type:%d", type);
635 BT_ERR("hex: %*ph", blksz * num_blocks, payload);
651 static int btmrvl_sdio_process_int_status(struct btmrvl_private *priv)
655 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
657 spin_lock_irqsave(&priv->driver_lock, flags);
660 spin_unlock_irqrestore(&priv->driver_lock, flags);
662 sdio_claim_host(card->func);
663 if (ireg & DN_LD_HOST_INT_STATUS) {
664 if (priv->btmrvl_dev.tx_dnld_rdy)
665 BT_DBG("tx_done already received: "
666 " int_status=0x%x", ireg);
668 priv->btmrvl_dev.tx_dnld_rdy = true;
671 if (ireg & UP_LD_HOST_INT_STATUS)
672 btmrvl_sdio_card_to_host(priv);
674 sdio_release_host(card->func);
679 static int btmrvl_sdio_read_to_clear(struct btmrvl_sdio_card *card, u8 *ireg)
681 struct btmrvl_adapter *adapter = card->priv->adapter;
684 ret = sdio_readsb(card->func, adapter->hw_regs, 0, SDIO_BLOCK_SIZE);
686 BT_ERR("sdio_readsb: read int hw_regs failed: %d", ret);
690 *ireg = adapter->hw_regs[card->reg->host_intstatus];
691 BT_DBG("hw_regs[%#x]=%#x", card->reg->host_intstatus, *ireg);
696 static int btmrvl_sdio_write_to_clear(struct btmrvl_sdio_card *card, u8 *ireg)
700 *ireg = sdio_readb(card->func, card->reg->host_intstatus, &ret);
702 BT_ERR("sdio_readb: read int status failed: %d", ret);
708 * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
709 * Clear the interrupt status register and re-enable the
712 BT_DBG("int_status = 0x%x", *ireg);
714 sdio_writeb(card->func, ~(*ireg) & (DN_LD_HOST_INT_STATUS |
715 UP_LD_HOST_INT_STATUS),
716 card->reg->host_intstatus, &ret);
718 BT_ERR("sdio_writeb: clear int status failed: %d", ret);
726 static void btmrvl_sdio_interrupt(struct sdio_func *func)
728 struct btmrvl_private *priv;
729 struct btmrvl_sdio_card *card;
734 card = sdio_get_drvdata(func);
735 if (!card || !card->priv) {
736 BT_ERR("sbi_interrupt(%p) card or priv is "
737 "NULL, card=%p\n", func, card);
743 if (card->reg->int_read_to_clear)
744 ret = btmrvl_sdio_read_to_clear(card, &ireg);
746 ret = btmrvl_sdio_write_to_clear(card, &ireg);
751 spin_lock_irqsave(&priv->driver_lock, flags);
753 spin_unlock_irqrestore(&priv->driver_lock, flags);
755 btmrvl_interrupt(priv);
758 static int btmrvl_sdio_register_dev(struct btmrvl_sdio_card *card)
760 struct sdio_func *func;
764 if (!card || !card->func) {
765 BT_ERR("Error: card or function is NULL!");
772 sdio_claim_host(func);
774 ret = sdio_enable_func(func);
776 BT_ERR("sdio_enable_func() failed: ret=%d", ret);
781 ret = sdio_claim_irq(func, btmrvl_sdio_interrupt);
783 BT_ERR("sdio_claim_irq failed: ret=%d", ret);
788 ret = sdio_set_block_size(card->func, SDIO_BLOCK_SIZE);
790 BT_ERR("cannot set SDIO block size");
795 reg = sdio_readb(func, card->reg->io_port_0, &ret);
803 reg = sdio_readb(func, card->reg->io_port_1, &ret);
809 card->ioport |= (reg << 8);
811 reg = sdio_readb(func, card->reg->io_port_2, &ret);
817 card->ioport |= (reg << 16);
819 BT_DBG("SDIO FUNC%d IO port: 0x%x", func->num, card->ioport);
821 if (card->reg->int_read_to_clear) {
822 reg = sdio_readb(func, card->reg->host_int_rsr, &ret);
827 sdio_writeb(func, reg | 0x3f, card->reg->host_int_rsr, &ret);
833 reg = sdio_readb(func, card->reg->card_misc_cfg, &ret);
838 sdio_writeb(func, reg | 0x10, card->reg->card_misc_cfg, &ret);
845 sdio_set_drvdata(func, card);
847 sdio_release_host(func);
852 sdio_release_irq(func);
855 sdio_disable_func(func);
858 sdio_release_host(func);
864 static int btmrvl_sdio_unregister_dev(struct btmrvl_sdio_card *card)
866 if (card && card->func) {
867 sdio_claim_host(card->func);
868 sdio_release_irq(card->func);
869 sdio_disable_func(card->func);
870 sdio_release_host(card->func);
871 sdio_set_drvdata(card->func, NULL);
877 static int btmrvl_sdio_enable_host_int(struct btmrvl_sdio_card *card)
881 if (!card || !card->func)
884 sdio_claim_host(card->func);
886 ret = btmrvl_sdio_enable_host_int_mask(card, HIM_ENABLE);
888 btmrvl_sdio_get_rx_unit(card);
890 sdio_release_host(card->func);
895 static int btmrvl_sdio_disable_host_int(struct btmrvl_sdio_card *card)
899 if (!card || !card->func)
902 sdio_claim_host(card->func);
904 ret = btmrvl_sdio_disable_host_int_mask(card, HIM_DISABLE);
906 sdio_release_host(card->func);
911 static int btmrvl_sdio_host_to_card(struct btmrvl_private *priv,
914 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
923 if (!card || !card->func) {
924 BT_ERR("card or function is NULL!");
929 if ((unsigned long) payload & (BTSDIO_DMA_ALIGN - 1)) {
930 tmpbufsz = ALIGN_SZ(nb, BTSDIO_DMA_ALIGN);
931 tmpbuf = kzalloc(tmpbufsz, GFP_KERNEL);
934 buf = (u8 *) ALIGN_ADDR(tmpbuf, BTSDIO_DMA_ALIGN);
935 memcpy(buf, payload, nb);
938 blksz = SDIO_BLOCK_SIZE;
939 buf_block_len = DIV_ROUND_UP(nb, blksz);
941 sdio_claim_host(card->func);
944 /* Transfer data to card */
945 ret = sdio_writesb(card->func, card->ioport, buf,
946 buf_block_len * blksz);
949 BT_ERR("i=%d writesb failed: %d", i, ret);
950 BT_ERR("hex: %*ph", nb, payload);
952 if (i > MAX_WRITE_IOMEM_RETRY)
957 priv->btmrvl_dev.tx_dnld_rdy = false;
960 sdio_release_host(card->func);
966 static int btmrvl_sdio_download_fw(struct btmrvl_sdio_card *card)
970 int pollnum = MAX_POLL_TRIES;
972 if (!card || !card->func) {
973 BT_ERR("card or function is NULL!");
977 if (!btmrvl_sdio_verify_fw_download(card, 1)) {
978 BT_DBG("Firmware already downloaded!");
982 sdio_claim_host(card->func);
984 /* Check if other function driver is downloading the firmware */
985 fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret);
987 BT_ERR("Failed to read FW downloading status!");
992 BT_DBG("BT not the winner (%#x). Skip FW downloading", fws0);
994 /* Give other function more time to download the firmware */
998 ret = btmrvl_sdio_download_helper(card);
1000 BT_ERR("Failed to download helper!");
1006 if (btmrvl_sdio_download_fw_w_helper(card)) {
1007 BT_ERR("Failed to download firmware!");
1013 sdio_release_host(card->func);
1016 * winner or not, with this test the FW synchronizes when the
1017 * module can continue its initialization
1019 if (btmrvl_sdio_verify_fw_download(card, pollnum)) {
1020 BT_ERR("FW failed to be active in time!");
1027 sdio_release_host(card->func);
1031 static int btmrvl_sdio_wakeup_fw(struct btmrvl_private *priv)
1033 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1036 if (!card || !card->func) {
1037 BT_ERR("card or function is NULL!");
1041 sdio_claim_host(card->func);
1043 sdio_writeb(card->func, HOST_POWER_UP, card->reg->cfg, &ret);
1045 sdio_release_host(card->func);
1047 BT_DBG("wake up firmware");
1052 static int btmrvl_sdio_probe(struct sdio_func *func,
1053 const struct sdio_device_id *id)
1056 struct btmrvl_private *priv = NULL;
1057 struct btmrvl_sdio_card *card = NULL;
1059 BT_INFO("vendor=0x%x, device=0x%x, class=%d, fn=%d",
1060 id->vendor, id->device, id->class, func->num);
1062 card = devm_kzalloc(&func->dev, sizeof(*card), GFP_KERNEL);
1068 if (id->driver_data) {
1069 struct btmrvl_sdio_device *data = (void *) id->driver_data;
1070 card->helper = data->helper;
1071 card->firmware = data->firmware;
1072 card->reg = data->reg;
1073 card->sd_blksz_fw_dl = data->sd_blksz_fw_dl;
1074 card->support_pscan_win_report = data->support_pscan_win_report;
1077 if (btmrvl_sdio_register_dev(card) < 0) {
1078 BT_ERR("Failed to register BT device!");
1082 /* Disable the interrupts on the card */
1083 btmrvl_sdio_disable_host_int(card);
1085 if (btmrvl_sdio_download_fw(card)) {
1086 BT_ERR("Downloading firmware failed!");
1091 btmrvl_sdio_enable_host_int(card);
1093 priv = btmrvl_add_card(card);
1095 BT_ERR("Initializing card failed!");
1097 goto disable_host_int;
1102 /* Initialize the interface specific function pointers */
1103 priv->hw_host_to_card = btmrvl_sdio_host_to_card;
1104 priv->hw_wakeup_firmware = btmrvl_sdio_wakeup_fw;
1105 priv->hw_process_int_status = btmrvl_sdio_process_int_status;
1107 if (btmrvl_register_hdev(priv)) {
1108 BT_ERR("Register hdev failed!");
1110 goto disable_host_int;
1116 btmrvl_sdio_disable_host_int(card);
1118 btmrvl_sdio_unregister_dev(card);
1122 static void btmrvl_sdio_remove(struct sdio_func *func)
1124 struct btmrvl_sdio_card *card;
1127 card = sdio_get_drvdata(func);
1129 /* Send SHUTDOWN command & disable interrupt
1130 * if user removes the module.
1133 btmrvl_send_module_cfg_cmd(card->priv,
1134 MODULE_SHUTDOWN_REQ);
1135 btmrvl_sdio_disable_host_int(card);
1137 BT_DBG("unregester dev");
1138 btmrvl_sdio_unregister_dev(card);
1139 btmrvl_remove_card(card->priv);
1144 static int btmrvl_sdio_suspend(struct device *dev)
1146 struct sdio_func *func = dev_to_sdio_func(dev);
1147 struct btmrvl_sdio_card *card;
1148 struct btmrvl_private *priv;
1149 mmc_pm_flag_t pm_flags;
1150 struct hci_dev *hcidev;
1153 pm_flags = sdio_get_host_pm_caps(func);
1154 BT_DBG("%s: suspend: PM flags = 0x%x", sdio_func_id(func),
1156 if (!(pm_flags & MMC_PM_KEEP_POWER)) {
1157 BT_ERR("%s: cannot remain alive while suspended",
1158 sdio_func_id(func));
1161 card = sdio_get_drvdata(func);
1162 if (!card || !card->priv) {
1163 BT_ERR("card or priv structure is not valid");
1167 BT_ERR("sdio_func is not specified");
1172 hcidev = priv->btmrvl_dev.hcidev;
1173 BT_DBG("%s: SDIO suspend", hcidev->name);
1174 hci_suspend_dev(hcidev);
1175 skb_queue_purge(&priv->adapter->tx_queue);
1177 if (priv->adapter->hs_state != HS_ACTIVATED) {
1178 if (btmrvl_enable_hs(priv)) {
1179 BT_ERR("HS not actived, suspend failed!");
1184 priv->adapter->is_suspended = true;
1186 /* We will keep the power when hs enabled successfully */
1187 if (priv->adapter->hs_state == HS_ACTIVATED) {
1188 BT_DBG("suspend with MMC_PM_KEEP_POWER");
1189 return sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
1191 BT_DBG("suspend without MMC_PM_KEEP_POWER");
1196 static int btmrvl_sdio_resume(struct device *dev)
1198 struct sdio_func *func = dev_to_sdio_func(dev);
1199 struct btmrvl_sdio_card *card;
1200 struct btmrvl_private *priv;
1201 mmc_pm_flag_t pm_flags;
1202 struct hci_dev *hcidev;
1205 pm_flags = sdio_get_host_pm_caps(func);
1206 BT_DBG("%s: resume: PM flags = 0x%x", sdio_func_id(func),
1208 card = sdio_get_drvdata(func);
1209 if (!card || !card->priv) {
1210 BT_ERR("card or priv structure is not valid");
1214 BT_ERR("sdio_func is not specified");
1219 if (!priv->adapter->is_suspended) {
1220 BT_DBG("device already resumed");
1224 priv->hw_wakeup_firmware(priv);
1225 priv->adapter->hs_state = HS_DEACTIVATED;
1226 hcidev = priv->btmrvl_dev.hcidev;
1227 BT_DBG("%s: HS DEACTIVATED in resume!", hcidev->name);
1228 priv->adapter->is_suspended = false;
1229 BT_DBG("%s: SDIO resume", hcidev->name);
1230 hci_resume_dev(hcidev);
1235 static const struct dev_pm_ops btmrvl_sdio_pm_ops = {
1236 .suspend = btmrvl_sdio_suspend,
1237 .resume = btmrvl_sdio_resume,
1240 static struct sdio_driver bt_mrvl_sdio = {
1241 .name = "btmrvl_sdio",
1242 .id_table = btmrvl_sdio_ids,
1243 .probe = btmrvl_sdio_probe,
1244 .remove = btmrvl_sdio_remove,
1246 .owner = THIS_MODULE,
1247 .pm = &btmrvl_sdio_pm_ops,
1251 static int __init btmrvl_sdio_init_module(void)
1253 if (sdio_register_driver(&bt_mrvl_sdio) != 0) {
1254 BT_ERR("SDIO Driver Registration Failed");
1258 /* Clear the flag in case user removes the card. */
1264 static void __exit btmrvl_sdio_exit_module(void)
1266 /* Set the flag as user is removing this module. */
1269 sdio_unregister_driver(&bt_mrvl_sdio);
1272 module_init(btmrvl_sdio_init_module);
1273 module_exit(btmrvl_sdio_exit_module);
1275 MODULE_AUTHOR("Marvell International Ltd.");
1276 MODULE_DESCRIPTION("Marvell BT-over-SDIO driver ver " VERSION);
1277 MODULE_VERSION(VERSION);
1278 MODULE_LICENSE("GPL v2");
1279 MODULE_FIRMWARE("mrvl/sd8688_helper.bin");
1280 MODULE_FIRMWARE("mrvl/sd8688.bin");
1281 MODULE_FIRMWARE("mrvl/sd8787_uapsta.bin");
1282 MODULE_FIRMWARE("mrvl/sd8797_uapsta.bin");
1283 MODULE_FIRMWARE("mrvl/sd8897_uapsta.bin");