zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/drivers/bluetooth/btuart_cs.c b/ap/os/linux/linux-3.4.x/drivers/bluetooth/btuart_cs.c
new file mode 100644
index 0000000..c4fc2f3
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/bluetooth/btuart_cs.c
@@ -0,0 +1,707 @@
+/*
+ *
+ * Driver for Bluetooth PCMCIA cards with HCI UART interface
+ *
+ * Copyright (C) 2001-2002 Marcel Holtmann <marcel@holtmann.org>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation;
+ *
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ *
+ * The initial developer of the original code is David A. Hinds
+ * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
+ * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
+ *
+ */
+
+#include <linux/module.h>
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+#include <linux/spinlock.h>
+#include <linux/moduleparam.h>
+
+#include <linux/skbuff.h>
+#include <linux/string.h>
+#include <linux/serial.h>
+#include <linux/serial_reg.h>
+#include <linux/bitops.h>
+#include <asm/io.h>
+
+#include <pcmcia/cistpl.h>
+#include <pcmcia/ciscode.h>
+#include <pcmcia/ds.h>
+#include <pcmcia/cisreg.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+
+
+/* ======================== Module parameters ======================== */
+
+
+MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
+MODULE_DESCRIPTION("Bluetooth driver for Bluetooth PCMCIA cards with HCI UART interface");
+MODULE_LICENSE("GPL");
+
+
+
+/* ======================== Local structures ======================== */
+
+
+typedef struct btuart_info_t {
+ struct pcmcia_device *p_dev;
+
+ struct hci_dev *hdev;
+
+ spinlock_t lock; /* For serializing operations */
+
+ struct sk_buff_head txq;
+ unsigned long tx_state;
+
+ unsigned long rx_state;
+ unsigned long rx_count;
+ struct sk_buff *rx_skb;
+} btuart_info_t;
+
+
+static int btuart_config(struct pcmcia_device *link);
+static void btuart_release(struct pcmcia_device *link);
+
+static void btuart_detach(struct pcmcia_device *p_dev);
+
+
+/* Maximum baud rate */
+#define SPEED_MAX 115200
+
+/* Default baud rate: 57600, 115200, 230400 or 460800 */
+#define DEFAULT_BAUD_RATE 115200
+
+
+/* Transmit states */
+#define XMIT_SENDING 1
+#define XMIT_WAKEUP 2
+#define XMIT_WAITING 8
+
+/* Receiver states */
+#define RECV_WAIT_PACKET_TYPE 0
+#define RECV_WAIT_EVENT_HEADER 1
+#define RECV_WAIT_ACL_HEADER 2
+#define RECV_WAIT_SCO_HEADER 3
+#define RECV_WAIT_DATA 4
+
+
+
+/* ======================== Interrupt handling ======================== */
+
+
+static int btuart_write(unsigned int iobase, int fifo_size, __u8 *buf, int len)
+{
+ int actual = 0;
+
+ /* Tx FIFO should be empty */
+ if (!(inb(iobase + UART_LSR) & UART_LSR_THRE))
+ return 0;
+
+ /* Fill FIFO with current frame */
+ while ((fifo_size-- > 0) && (actual < len)) {
+ /* Transmit next byte */
+ outb(buf[actual], iobase + UART_TX);
+ actual++;
+ }
+
+ return actual;
+}
+
+
+static void btuart_write_wakeup(btuart_info_t *info)
+{
+ if (!info) {
+ BT_ERR("Unknown device");
+ return;
+ }
+
+ if (test_and_set_bit(XMIT_SENDING, &(info->tx_state))) {
+ set_bit(XMIT_WAKEUP, &(info->tx_state));
+ return;
+ }
+
+ do {
+ register unsigned int iobase = info->p_dev->resource[0]->start;
+ register struct sk_buff *skb;
+ register int len;
+
+ clear_bit(XMIT_WAKEUP, &(info->tx_state));
+
+ if (!pcmcia_dev_present(info->p_dev))
+ return;
+
+ if (!(skb = skb_dequeue(&(info->txq))))
+ break;
+
+ /* Send frame */
+ len = btuart_write(iobase, 16, skb->data, skb->len);
+ set_bit(XMIT_WAKEUP, &(info->tx_state));
+
+ if (len == skb->len) {
+ kfree_skb(skb);
+ } else {
+ skb_pull(skb, len);
+ skb_queue_head(&(info->txq), skb);
+ }
+
+ info->hdev->stat.byte_tx += len;
+
+ } while (test_bit(XMIT_WAKEUP, &(info->tx_state)));
+
+ clear_bit(XMIT_SENDING, &(info->tx_state));
+}
+
+
+static void btuart_receive(btuart_info_t *info)
+{
+ unsigned int iobase;
+ int boguscount = 0;
+
+ if (!info) {
+ BT_ERR("Unknown device");
+ return;
+ }
+
+ iobase = info->p_dev->resource[0]->start;
+
+ do {
+ info->hdev->stat.byte_rx++;
+
+ /* Allocate packet */
+ if (info->rx_skb == NULL) {
+ info->rx_state = RECV_WAIT_PACKET_TYPE;
+ info->rx_count = 0;
+ if (!(info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC))) {
+ BT_ERR("Can't allocate mem for new packet");
+ return;
+ }
+ }
+
+ if (info->rx_state == RECV_WAIT_PACKET_TYPE) {
+
+ info->rx_skb->dev = (void *) info->hdev;
+ bt_cb(info->rx_skb)->pkt_type = inb(iobase + UART_RX);
+
+ switch (bt_cb(info->rx_skb)->pkt_type) {
+
+ case HCI_EVENT_PKT:
+ info->rx_state = RECV_WAIT_EVENT_HEADER;
+ info->rx_count = HCI_EVENT_HDR_SIZE;
+ break;
+
+ case HCI_ACLDATA_PKT:
+ info->rx_state = RECV_WAIT_ACL_HEADER;
+ info->rx_count = HCI_ACL_HDR_SIZE;
+ break;
+
+ case HCI_SCODATA_PKT:
+ info->rx_state = RECV_WAIT_SCO_HEADER;
+ info->rx_count = HCI_SCO_HDR_SIZE;
+ break;
+
+ default:
+ /* Unknown packet */
+ BT_ERR("Unknown HCI packet with type 0x%02x received", bt_cb(info->rx_skb)->pkt_type);
+ info->hdev->stat.err_rx++;
+ clear_bit(HCI_RUNNING, &(info->hdev->flags));
+
+ kfree_skb(info->rx_skb);
+ info->rx_skb = NULL;
+ break;
+
+ }
+
+ } else {
+
+ *skb_put(info->rx_skb, 1) = inb(iobase + UART_RX);
+ info->rx_count--;
+
+ if (info->rx_count == 0) {
+
+ int dlen;
+ struct hci_event_hdr *eh;
+ struct hci_acl_hdr *ah;
+ struct hci_sco_hdr *sh;
+
+
+ switch (info->rx_state) {
+
+ case RECV_WAIT_EVENT_HEADER:
+ eh = hci_event_hdr(info->rx_skb);
+ info->rx_state = RECV_WAIT_DATA;
+ info->rx_count = eh->plen;
+ break;
+
+ case RECV_WAIT_ACL_HEADER:
+ ah = hci_acl_hdr(info->rx_skb);
+ dlen = __le16_to_cpu(ah->dlen);
+ info->rx_state = RECV_WAIT_DATA;
+ info->rx_count = dlen;
+ break;
+
+ case RECV_WAIT_SCO_HEADER:
+ sh = hci_sco_hdr(info->rx_skb);
+ info->rx_state = RECV_WAIT_DATA;
+ info->rx_count = sh->dlen;
+ break;
+
+ case RECV_WAIT_DATA:
+ hci_recv_frame(info->rx_skb);
+ info->rx_skb = NULL;
+ break;
+
+ }
+
+ }
+
+ }
+
+ /* Make sure we don't stay here too long */
+ if (boguscount++ > 16)
+ break;
+
+ } while (inb(iobase + UART_LSR) & UART_LSR_DR);
+}
+
+
+static irqreturn_t btuart_interrupt(int irq, void *dev_inst)
+{
+ btuart_info_t *info = dev_inst;
+ unsigned int iobase;
+ int boguscount = 0;
+ int iir, lsr;
+ irqreturn_t r = IRQ_NONE;
+
+ if (!info || !info->hdev)
+ /* our irq handler is shared */
+ return IRQ_NONE;
+
+ iobase = info->p_dev->resource[0]->start;
+
+ spin_lock(&(info->lock));
+
+ iir = inb(iobase + UART_IIR) & UART_IIR_ID;
+ while (iir) {
+ r = IRQ_HANDLED;
+
+ /* Clear interrupt */
+ lsr = inb(iobase + UART_LSR);
+
+ switch (iir) {
+ case UART_IIR_RLSI:
+ BT_ERR("RLSI");
+ break;
+ case UART_IIR_RDI:
+ /* Receive interrupt */
+ btuart_receive(info);
+ break;
+ case UART_IIR_THRI:
+ if (lsr & UART_LSR_THRE) {
+ /* Transmitter ready for data */
+ btuart_write_wakeup(info);
+ }
+ break;
+ default:
+ BT_ERR("Unhandled IIR=%#x", iir);
+ break;
+ }
+
+ /* Make sure we don't stay here too long */
+ if (boguscount++ > 100)
+ break;
+
+ iir = inb(iobase + UART_IIR) & UART_IIR_ID;
+
+ }
+
+ spin_unlock(&(info->lock));
+
+ return r;
+}
+
+
+static void btuart_change_speed(btuart_info_t *info, unsigned int speed)
+{
+ unsigned long flags;
+ unsigned int iobase;
+ int fcr; /* FIFO control reg */
+ int lcr; /* Line control reg */
+ int divisor;
+
+ if (!info) {
+ BT_ERR("Unknown device");
+ return;
+ }
+
+ iobase = info->p_dev->resource[0]->start;
+
+ spin_lock_irqsave(&(info->lock), flags);
+
+ /* Turn off interrupts */
+ outb(0, iobase + UART_IER);
+
+ divisor = SPEED_MAX / speed;
+
+ fcr = UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT;
+
+ /*
+ * Use trigger level 1 to avoid 3 ms. timeout delay at 9600 bps, and
+ * almost 1,7 ms at 19200 bps. At speeds above that we can just forget
+ * about this timeout since it will always be fast enough.
+ */
+
+ if (speed < 38400)
+ fcr |= UART_FCR_TRIGGER_1;
+ else
+ fcr |= UART_FCR_TRIGGER_14;
+
+ /* Bluetooth cards use 8N1 */
+ lcr = UART_LCR_WLEN8;
+
+ outb(UART_LCR_DLAB | lcr, iobase + UART_LCR); /* Set DLAB */
+ outb(divisor & 0xff, iobase + UART_DLL); /* Set speed */
+ outb(divisor >> 8, iobase + UART_DLM);
+ outb(lcr, iobase + UART_LCR); /* Set 8N1 */
+ outb(fcr, iobase + UART_FCR); /* Enable FIFO's */
+
+ /* Turn on interrupts */
+ outb(UART_IER_RLSI | UART_IER_RDI | UART_IER_THRI, iobase + UART_IER);
+
+ spin_unlock_irqrestore(&(info->lock), flags);
+}
+
+
+
+/* ======================== HCI interface ======================== */
+
+
+static int btuart_hci_flush(struct hci_dev *hdev)
+{
+ btuart_info_t *info = hci_get_drvdata(hdev);
+
+ /* Drop TX queue */
+ skb_queue_purge(&(info->txq));
+
+ return 0;
+}
+
+
+static int btuart_hci_open(struct hci_dev *hdev)
+{
+ set_bit(HCI_RUNNING, &(hdev->flags));
+
+ return 0;
+}
+
+
+static int btuart_hci_close(struct hci_dev *hdev)
+{
+ if (!test_and_clear_bit(HCI_RUNNING, &(hdev->flags)))
+ return 0;
+
+ btuart_hci_flush(hdev);
+
+ return 0;
+}
+
+
+static int btuart_hci_send_frame(struct sk_buff *skb)
+{
+ btuart_info_t *info;
+ struct hci_dev *hdev = (struct hci_dev *)(skb->dev);
+
+ if (!hdev) {
+ BT_ERR("Frame for unknown HCI device (hdev=NULL)");
+ return -ENODEV;
+ }
+
+ info = hci_get_drvdata(hdev);
+
+ switch (bt_cb(skb)->pkt_type) {
+ case HCI_COMMAND_PKT:
+ hdev->stat.cmd_tx++;
+ break;
+ case HCI_ACLDATA_PKT:
+ hdev->stat.acl_tx++;
+ break;
+ case HCI_SCODATA_PKT:
+ hdev->stat.sco_tx++;
+ break;
+ };
+
+ /* Prepend skb with frame type */
+ memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
+ skb_queue_tail(&(info->txq), skb);
+
+ btuart_write_wakeup(info);
+
+ return 0;
+}
+
+
+static int btuart_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
+{
+ return -ENOIOCTLCMD;
+}
+
+
+
+/* ======================== Card services HCI interaction ======================== */
+
+
+static int btuart_open(btuart_info_t *info)
+{
+ unsigned long flags;
+ unsigned int iobase = info->p_dev->resource[0]->start;
+ struct hci_dev *hdev;
+
+ spin_lock_init(&(info->lock));
+
+ skb_queue_head_init(&(info->txq));
+
+ info->rx_state = RECV_WAIT_PACKET_TYPE;
+ info->rx_count = 0;
+ info->rx_skb = NULL;
+
+ /* Initialize HCI device */
+ hdev = hci_alloc_dev();
+ if (!hdev) {
+ BT_ERR("Can't allocate HCI device");
+ return -ENOMEM;
+ }
+
+ info->hdev = hdev;
+
+ hdev->bus = HCI_PCCARD;
+ hci_set_drvdata(hdev, info);
+ SET_HCIDEV_DEV(hdev, &info->p_dev->dev);
+
+ hdev->open = btuart_hci_open;
+ hdev->close = btuart_hci_close;
+ hdev->flush = btuart_hci_flush;
+ hdev->send = btuart_hci_send_frame;
+ hdev->ioctl = btuart_hci_ioctl;
+
+ spin_lock_irqsave(&(info->lock), flags);
+
+ /* Reset UART */
+ outb(0, iobase + UART_MCR);
+
+ /* Turn off interrupts */
+ outb(0, iobase + UART_IER);
+
+ /* Initialize UART */
+ outb(UART_LCR_WLEN8, iobase + UART_LCR); /* Reset DLAB */
+ outb((UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2), iobase + UART_MCR);
+
+ /* Turn on interrupts */
+ // outb(UART_IER_RLSI | UART_IER_RDI | UART_IER_THRI, iobase + UART_IER);
+
+ spin_unlock_irqrestore(&(info->lock), flags);
+
+ btuart_change_speed(info, DEFAULT_BAUD_RATE);
+
+ /* Timeout before it is safe to send the first HCI packet */
+ msleep(1000);
+
+ /* Register HCI device */
+ if (hci_register_dev(hdev) < 0) {
+ BT_ERR("Can't register HCI device");
+ info->hdev = NULL;
+ hci_free_dev(hdev);
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+
+static int btuart_close(btuart_info_t *info)
+{
+ unsigned long flags;
+ unsigned int iobase = info->p_dev->resource[0]->start;
+ struct hci_dev *hdev = info->hdev;
+
+ if (!hdev)
+ return -ENODEV;
+
+ btuart_hci_close(hdev);
+
+ spin_lock_irqsave(&(info->lock), flags);
+
+ /* Reset UART */
+ outb(0, iobase + UART_MCR);
+
+ /* Turn off interrupts */
+ outb(0, iobase + UART_IER);
+
+ spin_unlock_irqrestore(&(info->lock), flags);
+
+ hci_unregister_dev(hdev);
+ hci_free_dev(hdev);
+
+ return 0;
+}
+
+static int btuart_probe(struct pcmcia_device *link)
+{
+ btuart_info_t *info;
+
+ /* Create new info device */
+ info = kzalloc(sizeof(*info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+
+ info->p_dev = link;
+ link->priv = info;
+
+ link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_VPP |
+ CONF_AUTO_SET_IO;
+
+ return btuart_config(link);
+}
+
+
+static void btuart_detach(struct pcmcia_device *link)
+{
+ btuart_info_t *info = link->priv;
+
+ btuart_release(link);
+ kfree(info);
+}
+
+static int btuart_check_config(struct pcmcia_device *p_dev, void *priv_data)
+{
+ int *try = priv_data;
+
+ if (try == 0)
+ p_dev->io_lines = 16;
+
+ if ((p_dev->resource[0]->end != 8) || (p_dev->resource[0]->start == 0))
+ return -EINVAL;
+
+ p_dev->resource[0]->end = 8;
+ p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
+ p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
+
+ return pcmcia_request_io(p_dev);
+}
+
+static int btuart_check_config_notpicky(struct pcmcia_device *p_dev,
+ void *priv_data)
+{
+ static unsigned int base[5] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, 0x0 };
+ int j;
+
+ if (p_dev->io_lines > 3)
+ return -ENODEV;
+
+ p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
+ p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8;
+ p_dev->resource[0]->end = 8;
+
+ for (j = 0; j < 5; j++) {
+ p_dev->resource[0]->start = base[j];
+ p_dev->io_lines = base[j] ? 16 : 3;
+ if (!pcmcia_request_io(p_dev))
+ return 0;
+ }
+ return -ENODEV;
+}
+
+static int btuart_config(struct pcmcia_device *link)
+{
+ btuart_info_t *info = link->priv;
+ int i;
+ int try;
+
+ /* First pass: look for a config entry that looks normal.
+ Two tries: without IO aliases, then with aliases */
+ for (try = 0; try < 2; try++)
+ if (!pcmcia_loop_config(link, btuart_check_config, &try))
+ goto found_port;
+
+ /* Second pass: try to find an entry that isn't picky about
+ its base address, then try to grab any standard serial port
+ address, and finally try to get any free port. */
+ if (!pcmcia_loop_config(link, btuart_check_config_notpicky, NULL))
+ goto found_port;
+
+ BT_ERR("No usable port range found");
+ goto failed;
+
+found_port:
+ i = pcmcia_request_irq(link, btuart_interrupt);
+ if (i != 0)
+ goto failed;
+
+ i = pcmcia_enable_device(link);
+ if (i != 0)
+ goto failed;
+
+ if (btuart_open(info) != 0)
+ goto failed;
+
+ return 0;
+
+failed:
+ btuart_release(link);
+ return -ENODEV;
+}
+
+
+static void btuart_release(struct pcmcia_device *link)
+{
+ btuart_info_t *info = link->priv;
+
+ btuart_close(info);
+
+ pcmcia_disable_device(link);
+}
+
+static const struct pcmcia_device_id btuart_ids[] = {
+ /* don't use this driver. Use serial_cs + hci_uart instead */
+ PCMCIA_DEVICE_NULL
+};
+MODULE_DEVICE_TABLE(pcmcia, btuart_ids);
+
+static struct pcmcia_driver btuart_driver = {
+ .owner = THIS_MODULE,
+ .name = "btuart_cs",
+ .probe = btuart_probe,
+ .remove = btuart_detach,
+ .id_table = btuart_ids,
+};
+
+static int __init init_btuart_cs(void)
+{
+ return pcmcia_register_driver(&btuart_driver);
+}
+
+
+static void __exit exit_btuart_cs(void)
+{
+ pcmcia_unregister_driver(&btuart_driver);
+}
+
+module_init(init_btuart_cs);
+module_exit(exit_btuart_cs);