q3k/linux
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity
linux/drivers/bluetooth/btmrvl_sdio.c
Linus Torvalds 4ef58d4e2a Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (42 commits)
  tree-wide: fix misspelling of "definition" in comments
  reiserfs: fix misspelling of "journaled"
  doc: Fix a typo in slub.txt.
  inotify: remove superfluous return code check
  hdlc: spelling fix in find_pvc() comment
  doc: fix regulator docs cut-and-pasteism
  mtd: Fix comment in Kconfig
  doc: Fix IRQ chip docs
  tree-wide: fix assorted typos all over the place
  drivers/ata/libata-sff.c: comment spelling fixes
  fix typos/grammos in Documentation/edac.txt
  sysctl: add missing comments
  fs/debugfs/inode.c: fix comment typos
  sgivwfb: Make use of ARRAY_SIZE.
  sky2: fix sky2_link_down copy/paste comment error
  tree-wide: fix typos "couter" -> "counter"
  tree-wide: fix typos "offest" -> "offset"
  fix kerneldoc for set_irq_msi()
  spidev: fix double "of of" in comment
  comment typo fix: sybsystem -> subsystem
  ...
2009-12-09 19:43:33 -08:00

1007 lines
21 KiB
C
Raw Blame History

/**
* Marvell BT-over-SDIO driver: SDIO interface related functions.
*
* Copyright (C) 2009, Marvell International Ltd.
*
* This software file (the "File") is distributed by Marvell International
* Ltd. under the terms of the GNU General Public License Version 2, June 1991
* (the "License"). You may use, redistribute and/or modify this File in
* accordance with the terms and conditions of the License, a copy of which
* is available by writing to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
* worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
*
*
* THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
* IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
* ARE EXPRESSLY DISCLAIMED. The License provides additional details about
* this warranty disclaimer.
**/
#include <linux/firmware.h>
#include <linux/mmc/sdio_ids.h>
#include <linux/mmc/sdio_func.h>
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
#include "btmrvl_drv.h"
#include "btmrvl_sdio.h"
#define VERSION "1.0"
/* The btmrvl_sdio_remove() callback function is called
* when user removes this module from kernel space or ejects
* the card from the slot. The driver handles these 2 cases
* differently.
* If the user is removing the module, a MODULE_SHUTDOWN_REQ
* command is sent to firmware and interrupt will be disabled.
* If the card is removed, there is no need to send command
* or disable interrupt.
*
* The variable 'user_rmmod' is used to distinguish these two
* scenarios. This flag is initialized as FALSE in case the card
* is removed, and will be set to TRUE for module removal when
* module_exit function is called.
*/
static u8 user_rmmod;
static const struct btmrvl_sdio_device btmrvl_sdio_sd6888 = {
.helper = "sd8688_helper.bin",
.firmware = "sd8688.bin",
};
static const struct sdio_device_id btmrvl_sdio_ids[] = {
/* Marvell SD8688 Bluetooth device */
{ SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9105),
.driver_data = (unsigned long) &btmrvl_sdio_sd6888 },
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE(sdio, btmrvl_sdio_ids);
static int btmrvl_sdio_get_rx_unit(struct btmrvl_sdio_card *card)
{
u8 reg;
int ret;
reg = sdio_readb(card->func, CARD_RX_UNIT_REG, &ret);
if (!ret)
card->rx_unit = reg;
return ret;
}
static int btmrvl_sdio_read_fw_status(struct btmrvl_sdio_card *card, u16 *dat)
{
u8 fws0, fws1;
int ret;
*dat = 0;
fws0 = sdio_readb(card->func, CARD_FW_STATUS0_REG, &ret);
if (!ret)
fws1 = sdio_readb(card->func, CARD_FW_STATUS1_REG, &ret);
if (ret)
return -EIO;
*dat = (((u16) fws1) << 8) | fws0;
return 0;
}
static int btmrvl_sdio_read_rx_len(struct btmrvl_sdio_card *card, u16 *dat)
{
u8 reg;
int ret;
reg = sdio_readb(card->func, CARD_RX_LEN_REG, &ret);
if (!ret)
*dat = (u16) reg << card->rx_unit;
return ret;
}
static int btmrvl_sdio_enable_host_int_mask(struct btmrvl_sdio_card *card,
u8 mask)
{
int ret;
sdio_writeb(card->func, mask, HOST_INT_MASK_REG, &ret);
if (ret) {
BT_ERR("Unable to enable the host interrupt!");
ret = -EIO;
}
return ret;
}
static int btmrvl_sdio_disable_host_int_mask(struct btmrvl_sdio_card *card,
u8 mask)
{
u8 host_int_mask;
int ret;
host_int_mask = sdio_readb(card->func, HOST_INT_MASK_REG, &ret);
if (ret)
return -EIO;
host_int_mask &= ~mask;
sdio_writeb(card->func, host_int_mask, HOST_INT_MASK_REG, &ret);
if (ret < 0) {
BT_ERR("Unable to disable the host interrupt!");
return -EIO;
}
return 0;
}
static int btmrvl_sdio_poll_card_status(struct btmrvl_sdio_card *card, u8 bits)
{
unsigned int tries;
u8 status;
int ret;
for (tries = 0; tries < MAX_POLL_TRIES * 1000; tries++) {
status = sdio_readb(card->func, CARD_STATUS_REG, &ret);
if (ret)
goto failed;
if ((status & bits) == bits)
return ret;
udelay(1);
}
ret = -ETIMEDOUT;
failed:
BT_ERR("FAILED! ret=%d", ret);
return ret;
}
static int btmrvl_sdio_verify_fw_download(struct btmrvl_sdio_card *card,
int pollnum)
{
int ret = -ETIMEDOUT;
u16 firmwarestat;
unsigned int tries;
/* Wait for firmware to become ready */
for (tries = 0; tries < pollnum; tries++) {
if (btmrvl_sdio_read_fw_status(card, &firmwarestat) < 0)
continue;
if (firmwarestat == FIRMWARE_READY) {
ret = 0;
break;
} else {
msleep(10);
}
}
return ret;
}
static int btmrvl_sdio_download_helper(struct btmrvl_sdio_card *card)
{
const struct firmware *fw_helper = NULL;
const u8 *helper = NULL;
int ret;
void *tmphlprbuf = NULL;
int tmphlprbufsz, hlprblknow, helperlen;
u8 *helperbuf;
u32 tx_len;
ret = request_firmware(&fw_helper, card->helper,
&card->func->dev);
if ((ret < 0) || !fw_helper) {
BT_ERR("request_firmware(helper) failed, error code = %d",
ret);
ret = -ENOENT;
goto done;
}
helper = fw_helper->data;
helperlen = fw_helper->size;
BT_DBG("Downloading helper image (%d bytes), block size %d bytes",
helperlen, SDIO_BLOCK_SIZE);
tmphlprbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
tmphlprbuf = kmalloc(tmphlprbufsz, GFP_KERNEL);
if (!tmphlprbuf) {
BT_ERR("Unable to allocate buffer for helper."
" Terminating download");
ret = -ENOMEM;
goto done;
}
memset(tmphlprbuf, 0, tmphlprbufsz);
helperbuf = (u8 *) ALIGN_ADDR(tmphlprbuf, BTSDIO_DMA_ALIGN);
/* Perform helper data transfer */
tx_len = (FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE)
- SDIO_HEADER_LEN;
hlprblknow = 0;
do {
ret = btmrvl_sdio_poll_card_status(card,
CARD_IO_READY | DN_LD_CARD_RDY);
if (ret < 0) {
BT_ERR("Helper download poll status timeout @ %d",
hlprblknow);
goto done;
}
/* Check if there is more data? */
if (hlprblknow >= helperlen)
break;
if (helperlen - hlprblknow < tx_len)
tx_len = helperlen - hlprblknow;
/* Little-endian */
helperbuf[0] = ((tx_len & 0x000000ff) >> 0);
helperbuf[1] = ((tx_len & 0x0000ff00) >> 8);
helperbuf[2] = ((tx_len & 0x00ff0000) >> 16);
helperbuf[3] = ((tx_len & 0xff000000) >> 24);
memcpy(&helperbuf[SDIO_HEADER_LEN], &helper[hlprblknow],
tx_len);
/* Now send the data */
ret = sdio_writesb(card->func, card->ioport, helperbuf,
FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE);
if (ret < 0) {
BT_ERR("IO error during helper download @ %d",
hlprblknow);
goto done;
}
hlprblknow += tx_len;
} while (true);
BT_DBG("Transferring helper image EOF block");
memset(helperbuf, 0x0, SDIO_BLOCK_SIZE);
ret = sdio_writesb(card->func, card->ioport, helperbuf,
SDIO_BLOCK_SIZE);
if (ret < 0) {
BT_ERR("IO error in writing helper image EOF block");
goto done;
}
ret = 0;
done:
kfree(tmphlprbuf);
if (fw_helper)
release_firmware(fw_helper);
return ret;
}
static int btmrvl_sdio_download_fw_w_helper(struct btmrvl_sdio_card *card)
{
const struct firmware *fw_firmware = NULL;
const u8 *firmware = NULL;
int firmwarelen, tmpfwbufsz, ret;
unsigned int tries, offset;
u8 base0, base1;
void *tmpfwbuf = NULL;
u8 *fwbuf;
u16 len;
int txlen = 0, tx_blocks = 0, count = 0;
ret = request_firmware(&fw_firmware, card->firmware,
&card->func->dev);
if ((ret < 0) || !fw_firmware) {
BT_ERR("request_firmware(firmware) failed, error code = %d",
ret);
ret = -ENOENT;
goto done;
}
firmware = fw_firmware->data;
firmwarelen = fw_firmware->size;
BT_DBG("Downloading FW image (%d bytes)", firmwarelen);
tmpfwbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
tmpfwbuf = kmalloc(tmpfwbufsz, GFP_KERNEL);
if (!tmpfwbuf) {
BT_ERR("Unable to allocate buffer for firmware."
" Terminating download");
ret = -ENOMEM;
goto done;
}
memset(tmpfwbuf, 0, tmpfwbufsz);
/* Ensure aligned firmware buffer */
fwbuf = (u8 *) ALIGN_ADDR(tmpfwbuf, BTSDIO_DMA_ALIGN);
/* Perform firmware data transfer */
offset = 0;
do {
ret = btmrvl_sdio_poll_card_status(card,
CARD_IO_READY | DN_LD_CARD_RDY);
if (ret < 0) {
BT_ERR("FW download with helper poll status"
" timeout @ %d", offset);
goto done;
}
/* Check if there is more data ? */
if (offset >= firmwarelen)
break;
for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
base0 = sdio_readb(card->func,
SQ_READ_BASE_ADDRESS_A0_REG, &ret);
if (ret) {
BT_ERR("BASE0 register read failed:"
" base0 = 0x%04X(%d)."
" Terminating download",
base0, base0);
ret = -EIO;
goto done;
}
base1 = sdio_readb(card->func,
SQ_READ_BASE_ADDRESS_A1_REG, &ret);
if (ret) {
BT_ERR("BASE1 register read failed:"
" base1 = 0x%04X(%d)."
" Terminating download",
base1, base1);
ret = -EIO;
goto done;
}
len = (((u16) base1) << 8) | base0;
if (len)
break;
udelay(10);
}
if (!len)
break;
else if (len > BTM_UPLD_SIZE) {
BT_ERR("FW download failure @%d, invalid length %d",
offset, len);
ret = -EINVAL;
goto done;
}
txlen = len;
if (len & BIT(0)) {
count++;
if (count > MAX_WRITE_IOMEM_RETRY) {
BT_ERR("FW download failure @%d, "
"over max retry count", offset);
ret = -EIO;
goto done;
}
BT_ERR("FW CRC error indicated by the helper: "
"len = 0x%04X, txlen = %d", len, txlen);
len &= ~BIT(0);
/* Set txlen to 0 so as to resend from same offset */
txlen = 0;
} else {
count = 0;
/* Last block ? */
if (firmwarelen - offset < txlen)
txlen = firmwarelen - offset;
tx_blocks =
(txlen + SDIO_BLOCK_SIZE - 1) / SDIO_BLOCK_SIZE;
memcpy(fwbuf, &firmware[offset], txlen);
}
ret = sdio_writesb(card->func, card->ioport, fwbuf,
tx_blocks * SDIO_BLOCK_SIZE);
if (ret < 0) {
BT_ERR("FW download, writesb(%d) failed @%d",
count, offset);
sdio_writeb(card->func, HOST_CMD53_FIN, CONFIG_REG,
&ret);
if (ret)
BT_ERR("writeb failed (CFG)");
}
offset += txlen;
} while (true);
BT_DBG("FW download over, size %d bytes", offset);
ret = 0;
done:
kfree(tmpfwbuf);
if (fw_firmware)
release_firmware(fw_firmware);
return ret;
}
static int btmrvl_sdio_card_to_host(struct btmrvl_private *priv)
{
u16 buf_len = 0;
int ret, buf_block_len, blksz;
struct sk_buff *skb = NULL;
u32 type;
u8 *payload = NULL;
struct hci_dev *hdev = priv->btmrvl_dev.hcidev;
struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
if (!card || !card->func) {
BT_ERR("card or function is NULL!");
ret = -EINVAL;
goto exit;
}
/* Read the length of data to be transferred */
ret = btmrvl_sdio_read_rx_len(card, &buf_len);
if (ret < 0) {
BT_ERR("read rx_len failed");
ret = -EIO;
goto exit;
}
blksz = SDIO_BLOCK_SIZE;
buf_block_len = (buf_len + blksz - 1) / blksz;
if (buf_len <= SDIO_HEADER_LEN
|| (buf_block_len * blksz) > ALLOC_BUF_SIZE) {
BT_ERR("invalid packet length: %d", buf_len);
ret = -EINVAL;
goto exit;
}
/* Allocate buffer */
skb = bt_skb_alloc(buf_block_len * blksz + BTSDIO_DMA_ALIGN,
GFP_ATOMIC);
if (skb == NULL) {
BT_ERR("No free skb");
goto exit;
}
if ((unsigned long) skb->data & (BTSDIO_DMA_ALIGN - 1)) {
skb_put(skb, (unsigned long) skb->data &
(BTSDIO_DMA_ALIGN - 1));
skb_pull(skb, (unsigned long) skb->data &
(BTSDIO_DMA_ALIGN - 1));
}
payload = skb->data;
ret = sdio_readsb(card->func, payload, card->ioport,
buf_block_len * blksz);
if (ret < 0) {
BT_ERR("readsb failed: %d", ret);
ret = -EIO;
goto exit;
}
/* This is SDIO specific header length: byte[2][1][0], type: byte[3]
* (HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor)
*/
buf_len = payload[0];
buf_len |= (u16) payload[1] << 8;
type = payload[3];
switch (type) {
case HCI_ACLDATA_PKT:
case HCI_SCODATA_PKT:
case HCI_EVENT_PKT:
bt_cb(skb)->pkt_type = type;
skb->dev = (void *)hdev;
skb_put(skb, buf_len);
skb_pull(skb, SDIO_HEADER_LEN);
if (type == HCI_EVENT_PKT)
btmrvl_check_evtpkt(priv, skb);
hci_recv_frame(skb);
hdev->stat.byte_rx += buf_len;
break;
case MRVL_VENDOR_PKT:
bt_cb(skb)->pkt_type = HCI_VENDOR_PKT;
skb->dev = (void *)hdev;
skb_put(skb, buf_len);
skb_pull(skb, SDIO_HEADER_LEN);
if (btmrvl_process_event(priv, skb))
hci_recv_frame(skb);
hdev->stat.byte_rx += buf_len;
break;
default:
BT_ERR("Unknown packet type:%d", type);
print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, payload,
blksz * buf_block_len);
kfree_skb(skb);
skb = NULL;
break;
}
exit:
if (ret) {
hdev->stat.err_rx++;
if (skb)
kfree_skb(skb);
}
return ret;
}
static int btmrvl_sdio_get_int_status(struct btmrvl_private *priv, u8 * ireg)
{
int ret;
u8 sdio_ireg = 0;
struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
*ireg = 0;
sdio_ireg = sdio_readb(card->func, HOST_INTSTATUS_REG, &ret);
if (ret) {
BT_ERR("sdio_readb: read int status register failed");
ret = -EIO;
goto done;
}
if (sdio_ireg != 0) {
/*
* DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
* Clear the interrupt status register and re-enable the
* interrupt.
*/
BT_DBG("sdio_ireg = 0x%x", sdio_ireg);
sdio_writeb(card->func, ~(sdio_ireg) & (DN_LD_HOST_INT_STATUS |
UP_LD_HOST_INT_STATUS),
HOST_INTSTATUS_REG, &ret);
if (ret) {
BT_ERR("sdio_writeb: clear int status register "
"failed");
ret = -EIO;
goto done;
}
}
if (sdio_ireg & DN_LD_HOST_INT_STATUS) {
if (priv->btmrvl_dev.tx_dnld_rdy)
BT_DBG("tx_done already received: "
" int_status=0x%x", sdio_ireg);
else
priv->btmrvl_dev.tx_dnld_rdy = true;
}
if (sdio_ireg & UP_LD_HOST_INT_STATUS)
btmrvl_sdio_card_to_host(priv);
*ireg = sdio_ireg;
ret = 0;
done:
return ret;
}
static void btmrvl_sdio_interrupt(struct sdio_func *func)
{
struct btmrvl_private *priv;
struct hci_dev *hcidev;
struct btmrvl_sdio_card *card;
u8 ireg = 0;
card = sdio_get_drvdata(func);
if (card && card->priv) {
priv = card->priv;
hcidev = priv->btmrvl_dev.hcidev;
if (btmrvl_sdio_get_int_status(priv, &ireg))
BT_ERR("reading HOST_INT_STATUS_REG failed");
else
BT_DBG("HOST_INT_STATUS_REG %#x", ireg);
btmrvl_interrupt(priv);
}
}
static int btmrvl_sdio_register_dev(struct btmrvl_sdio_card *card)
{
struct sdio_func *func;
u8 reg;
int ret = 0;
if (!card || !card->func) {
BT_ERR("Error: card or function is NULL!");
ret = -EINVAL;
goto failed;
}
func = card->func;
sdio_claim_host(func);
ret = sdio_enable_func(func);
if (ret) {
BT_ERR("sdio_enable_func() failed: ret=%d", ret);
ret = -EIO;
goto release_host;
}
ret = sdio_claim_irq(func, btmrvl_sdio_interrupt);
if (ret) {
BT_ERR("sdio_claim_irq failed: ret=%d", ret);
ret = -EIO;
goto disable_func;
}
ret = sdio_set_block_size(card->func, SDIO_BLOCK_SIZE);
if (ret) {
BT_ERR("cannot set SDIO block size");
ret = -EIO;
goto release_irq;
}
reg = sdio_readb(func, IO_PORT_0_REG, &ret);
if (ret < 0) {
ret = -EIO;
goto release_irq;
}
card->ioport = reg;
reg = sdio_readb(func, IO_PORT_1_REG, &ret);
if (ret < 0) {
ret = -EIO;
goto release_irq;
}
card->ioport |= (reg << 8);
reg = sdio_readb(func, IO_PORT_2_REG, &ret);
if (ret < 0) {
ret = -EIO;
goto release_irq;
}
card->ioport |= (reg << 16);
BT_DBG("SDIO FUNC%d IO port: 0x%x", func->num, card->ioport);
sdio_set_drvdata(func, card);
sdio_release_host(func);
return 0;
release_irq:
sdio_release_irq(func);
disable_func:
sdio_disable_func(func);
release_host:
sdio_release_host(func);
failed:
return ret;
}
static int btmrvl_sdio_unregister_dev(struct btmrvl_sdio_card *card)
{
if (card && card->func) {
sdio_claim_host(card->func);
sdio_release_irq(card->func);
sdio_disable_func(card->func);
sdio_release_host(card->func);
sdio_set_drvdata(card->func, NULL);
}
return 0;
}
static int btmrvl_sdio_enable_host_int(struct btmrvl_sdio_card *card)
{
int ret;
if (!card || !card->func)
return -EINVAL;
sdio_claim_host(card->func);
ret = btmrvl_sdio_enable_host_int_mask(card, HIM_ENABLE);
btmrvl_sdio_get_rx_unit(card);
sdio_release_host(card->func);
return ret;
}
static int btmrvl_sdio_disable_host_int(struct btmrvl_sdio_card *card)
{
int ret;
if (!card || !card->func)
return -EINVAL;
sdio_claim_host(card->func);
ret = btmrvl_sdio_disable_host_int_mask(card, HIM_DISABLE);
sdio_release_host(card->func);
return ret;
}
static int btmrvl_sdio_host_to_card(struct btmrvl_private *priv,
u8 *payload, u16 nb)
{
struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
int ret = 0;
int buf_block_len;
int blksz;
int i = 0;
u8 *buf = NULL;
void *tmpbuf = NULL;
int tmpbufsz;
if (!card || !card->func) {
BT_ERR("card or function is NULL!");
return -EINVAL;
}
buf = payload;
if ((unsigned long) payload & (BTSDIO_DMA_ALIGN - 1)) {
tmpbufsz = ALIGN_SZ(nb, BTSDIO_DMA_ALIGN);
tmpbuf = kzalloc(tmpbufsz, GFP_KERNEL);
if (!tmpbuf)
return -ENOMEM;
buf = (u8 *) ALIGN_ADDR(tmpbuf, BTSDIO_DMA_ALIGN);
memcpy(buf, payload, nb);
}
blksz = SDIO_BLOCK_SIZE;
buf_block_len = (nb + blksz - 1) / blksz;
sdio_claim_host(card->func);
do {
/* Transfer data to card */
ret = sdio_writesb(card->func, card->ioport, buf,
buf_block_len * blksz);
if (ret < 0) {
i++;
BT_ERR("i=%d writesb failed: %d", i, ret);
print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,
payload, nb);
ret = -EIO;
if (i > MAX_WRITE_IOMEM_RETRY)
goto exit;
}
} while (ret);
priv->btmrvl_dev.tx_dnld_rdy = false;
exit:
sdio_release_host(card->func);
return ret;
}
static int btmrvl_sdio_download_fw(struct btmrvl_sdio_card *card)
{
int ret = 0;
if (!card || !card->func) {
BT_ERR("card or function is NULL!");
return -EINVAL;
}
sdio_claim_host(card->func);
if (!btmrvl_sdio_verify_fw_download(card, 1)) {
BT_DBG("Firmware already downloaded!");
goto done;
}
ret = btmrvl_sdio_download_helper(card);
if (ret) {
BT_ERR("Failed to download helper!");
ret = -EIO;
goto done;
}
if (btmrvl_sdio_download_fw_w_helper(card)) {
BT_ERR("Failed to download firmware!");
ret = -EIO;
goto done;
}
if (btmrvl_sdio_verify_fw_download(card, MAX_POLL_TRIES)) {
BT_ERR("FW failed to be active in time!");
ret = -ETIMEDOUT;
goto done;
}
done:
sdio_release_host(card->func);
return ret;
}
static int btmrvl_sdio_wakeup_fw(struct btmrvl_private *priv)
{
struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
int ret = 0;
if (!card || !card->func) {
BT_ERR("card or function is NULL!");
return -EINVAL;
}
sdio_claim_host(card->func);
sdio_writeb(card->func, HOST_POWER_UP, CONFIG_REG, &ret);
sdio_release_host(card->func);
BT_DBG("wake up firmware");
return ret;
}
static int btmrvl_sdio_probe(struct sdio_func *func,
const struct sdio_device_id *id)
{
int ret = 0;
struct btmrvl_private *priv = NULL;
struct btmrvl_sdio_card *card = NULL;
BT_INFO("vendor=0x%x, device=0x%x, class=%d, fn=%d",
id->vendor, id->device, id->class, func->num);
card = kzalloc(sizeof(*card), GFP_KERNEL);
if (!card) {
ret = -ENOMEM;
goto done;
}
card->func = func;
if (id->driver_data) {
struct btmrvl_sdio_device *data = (void *) id->driver_data;
card->helper = data->helper;
card->firmware = data->firmware;
}
if (btmrvl_sdio_register_dev(card) < 0) {
BT_ERR("Failed to register BT device!");
ret = -ENODEV;
goto free_card;
}
/* Disable the interrupts on the card */
btmrvl_sdio_disable_host_int(card);
if (btmrvl_sdio_download_fw(card)) {
BT_ERR("Downloading firmware failed!");
ret = -ENODEV;
goto unreg_dev;
}
msleep(100);
btmrvl_sdio_enable_host_int(card);
priv = btmrvl_add_card(card);
if (!priv) {
BT_ERR("Initializing card failed!");
ret = -ENODEV;
goto disable_host_int;
}
card->priv = priv;
/* Initialize the interface specific function pointers */
priv->hw_host_to_card = btmrvl_sdio_host_to_card;
priv->hw_wakeup_firmware = btmrvl_sdio_wakeup_fw;
btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
priv->btmrvl_dev.psmode = 1;
btmrvl_enable_ps(priv);
return 0;
disable_host_int:
btmrvl_sdio_disable_host_int(card);
unreg_dev:
btmrvl_sdio_unregister_dev(card);
free_card:
kfree(card);
done:
return ret;
}
static void btmrvl_sdio_remove(struct sdio_func *func)
{
struct btmrvl_sdio_card *card;
if (func) {
card = sdio_get_drvdata(func);
if (card) {
/* Send SHUTDOWN command & disable interrupt
* if user removes the module.
*/
if (user_rmmod) {
btmrvl_send_module_cfg_cmd(card->priv,
MODULE_SHUTDOWN_REQ);
btmrvl_sdio_disable_host_int(card);
}
BT_DBG("unregester dev");
btmrvl_sdio_unregister_dev(card);
btmrvl_remove_card(card->priv);
kfree(card);
}
}
}
static struct sdio_driver bt_mrvl_sdio = {
.name = "btmrvl_sdio",
.id_table = btmrvl_sdio_ids,
.probe = btmrvl_sdio_probe,
.remove = btmrvl_sdio_remove,
};
static int btmrvl_sdio_init_module(void)
{
if (sdio_register_driver(&bt_mrvl_sdio) != 0) {
BT_ERR("SDIO Driver Registration Failed");
return -ENODEV;
}
/* Clear the flag in case user removes the card. */
user_rmmod = 0;
return 0;
}
static void btmrvl_sdio_exit_module(void)
{
/* Set the flag as user is removing this module. */
user_rmmod = 1;
sdio_unregister_driver(&bt_mrvl_sdio);
}
module_init(btmrvl_sdio_init_module);
module_exit(btmrvl_sdio_exit_module);
MODULE_AUTHOR("Marvell International Ltd.");
MODULE_DESCRIPTION("Marvell BT-over-SDIO driver ver " VERSION);
MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL v2");
MODULE_FIRMWARE("sd8688_helper.bin");
MODULE_FIRMWARE("sd8688.bin");
Reference in a new issue View git blame Copy permalink