KumiSystems/openwrtv4
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity
openwrtv4/target/linux/omap24xx/patches-3.1/400-bluetooth-hci_h4p.patch
Michael Büsch 7d123a86e3 omap24xx: Add 3.1 patchset. 
SVN-Revision: 28672
2011-10-29 19:02:50 +00:00

1946 lines
49 KiB
Diff
Raw Blame History

---
drivers/bluetooth/Kconfig | 10
drivers/bluetooth/Makefile | 1
drivers/bluetooth/hci_h4p/Makefile | 7
drivers/bluetooth/hci_h4p/core.c | 1043 ++++++++++++++++++++++++++++++++++++
drivers/bluetooth/hci_h4p/fw-csr.c | 149 +++++
drivers/bluetooth/hci_h4p/fw-ti.c | 90 +++
drivers/bluetooth/hci_h4p/fw.c | 155 +++++
drivers/bluetooth/hci_h4p/hci_h4p.h | 183 ++++++
drivers/bluetooth/hci_h4p/sysfs.c | 84 ++
drivers/bluetooth/hci_h4p/uart.c | 169 +++++
10 files changed, 1891 insertions(+)
--- /dev/null
+++ b/drivers/bluetooth/hci_h4p/core.c
@@ -0,0 +1,1043 @@
+/*
+ * This file is part of hci_h4p bluetooth driver
+ *
+ * Copyright (C) 2005, 2006 Nokia Corporation.
+ *
+ * Contact: Ville Tervo <ville.tervo@nokia.com>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/module.h>
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <linux/spinlock.h>
+#include <linux/serial_reg.h>
+#include <linux/skbuff.h>
+#include <linux/timer.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/gpio.h>
+
+#include <mach/hardware.h>
+#include <mach/board.h>
+#include <mach/irqs.h>
+#include <plat/serial.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+#include <net/bluetooth/hci.h>
+
+#include "hci_h4p.h"
+
+#define PM_TIMEOUT 200
+
+struct omap_bluetooth_config {
+ u8 chip_type;
+ u8 bt_wakeup_gpio;
+ u8 host_wakeup_gpio;
+ u8 reset_gpio;
+ u8 bt_uart;
+ u8 bd_addr[6];
+ u8 bt_sysclk;
+};
+
+/* This should be used in function that cannot release clocks */
+static void hci_h4p_set_clk(struct hci_h4p_info *info, int *clock, int enable)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&info->clocks_lock, flags);
+ if (enable && !*clock) {
+ NBT_DBG_POWER("Enabling %p\n", clock);
+ clk_enable(info->uart_fclk);
+#ifdef CONFIG_ARCH_OMAP2
+ if (cpu_is_omap24xx()) {
+ clk_enable(info->uart_iclk);
+ //omap2_block_sleep();
+ }
+#endif
+ }
+ if (!enable && *clock) {
+ NBT_DBG_POWER("Disabling %p\n", clock);
+ clk_disable(info->uart_fclk);
+#ifdef CONFIG_ARCH_OMAP2
+ if (cpu_is_omap24xx()) {
+ clk_disable(info->uart_iclk);
+ //omap2_allow_sleep();
+ }
+#endif
+ }
+
+ *clock = enable;
+ spin_unlock_irqrestore(&info->clocks_lock, flags);
+}
+
+/* Power management functions */
+static void hci_h4p_disable_tx(struct hci_h4p_info *info)
+{
+ NBT_DBG_POWER("\n");
+
+ if (!info->pm_enabled)
+ return;
+
+ mod_timer(&info->tx_pm_timer, jiffies + msecs_to_jiffies(PM_TIMEOUT));
+}
+
+static void hci_h4p_enable_tx(struct hci_h4p_info *info)
+{
+ NBT_DBG_POWER("\n");
+
+ if (!info->pm_enabled)
+ return;
+
+ del_timer_sync(&info->tx_pm_timer);
+ if (info->tx_pm_enabled) {
+ info->tx_pm_enabled = 0;
+ hci_h4p_set_clk(info, &info->tx_clocks_en, 1);
+ gpio_set_value(info->bt_wakeup_gpio, 1);
+ }
+}
+
+static void hci_h4p_tx_pm_timer(unsigned long data)
+{
+ struct hci_h4p_info *info;
+
+ NBT_DBG_POWER("\n");
+
+ info = (struct hci_h4p_info *)data;
+
+ if (hci_h4p_inb(info, UART_LSR) & UART_LSR_TEMT) {
+ gpio_set_value(info->bt_wakeup_gpio, 0);
+ hci_h4p_set_clk(info, &info->tx_clocks_en, 0);
+ info->tx_pm_enabled = 1;
+ }
+ else {
+ mod_timer(&info->tx_pm_timer, jiffies + msecs_to_jiffies(PM_TIMEOUT));
+ }
+}
+
+static void hci_h4p_disable_rx(struct hci_h4p_info *info)
+{
+ if (!info->pm_enabled)
+ return;
+
+ mod_timer(&info->rx_pm_timer, jiffies + msecs_to_jiffies(PM_TIMEOUT));
+}
+
+static void hci_h4p_enable_rx(struct hci_h4p_info *info)
+{
+ unsigned long flags;
+
+ if (!info->pm_enabled)
+ return;
+
+ del_timer_sync(&info->rx_pm_timer);
+ spin_lock_irqsave(&info->lock, flags);
+ if (info->rx_pm_enabled) {
+ hci_h4p_set_clk(info, &info->rx_clocks_en, 1);
+ hci_h4p_outb(info, UART_IER, hci_h4p_inb(info, UART_IER) | UART_IER_RDI);
+ __hci_h4p_set_auto_ctsrts(info, 1, UART_EFR_RTS);
+ info->rx_pm_enabled = 0;
+ }
+ spin_unlock_irqrestore(&info->lock, flags);
+}
+
+static void hci_h4p_rx_pm_timer(unsigned long data)
+{
+ unsigned long flags;
+ struct hci_h4p_info *info = (struct hci_h4p_info *)data;
+
+ spin_lock_irqsave(&info->lock, flags);
+ if (!(hci_h4p_inb(info, UART_LSR) & UART_LSR_DR)) {
+ __hci_h4p_set_auto_ctsrts(info, 0, UART_EFR_RTS);
+ hci_h4p_set_rts(info, 0);
+ hci_h4p_outb(info, UART_IER, hci_h4p_inb(info, UART_IER) & ~UART_IER_RDI);
+ hci_h4p_set_clk(info, &info->rx_clocks_en, 0);
+ info->rx_pm_enabled = 1;
+ }
+ else {
+ mod_timer(&info->rx_pm_timer, jiffies + msecs_to_jiffies(PM_TIMEOUT));
+ }
+ spin_unlock_irqrestore(&info->lock, flags);
+}
+
+/* Negotiation functions */
+int hci_h4p_send_alive_packet(struct hci_h4p_info *info)
+{
+ NBT_DBG("Sending alive packet\n");
+
+ if (!info->alive_cmd_skb)
+ return -EINVAL;
+
+ /* Keep reference to buffer so we can reuse it */
+ info->alive_cmd_skb = skb_get(info->alive_cmd_skb);
+
+ skb_queue_tail(&info->txq, info->alive_cmd_skb);
+ tasklet_schedule(&info->tx_task);
+
+ NBT_DBG("Alive packet sent\n");
+
+ return 0;
+}
+
+static void hci_h4p_alive_packet(struct hci_h4p_info *info, struct sk_buff *skb)
+{
+ NBT_DBG("Received alive packet\n");
+ if (skb->data[1] == 0xCC) {
+ complete(&info->init_completion);
+ }
+
+ kfree_skb(skb);
+}
+
+static int hci_h4p_send_negotiation(struct hci_h4p_info *info, struct sk_buff *skb)
+{
+ NBT_DBG("Sending negotiation..\n");
+
+ hci_h4p_change_speed(info, INIT_SPEED);
+
+ info->init_error = 0;
+ init_completion(&info->init_completion);
+ skb_queue_tail(&info->txq, skb);
+ tasklet_schedule(&info->tx_task);
+
+ if (!wait_for_completion_interruptible_timeout(&info->init_completion,
+ msecs_to_jiffies(1000)))
+ return -ETIMEDOUT;
+
+ NBT_DBG("Negotiation sent\n");
+ return info->init_error;
+}
+
+static void hci_h4p_negotiation_packet(struct hci_h4p_info *info,
+ struct sk_buff *skb)
+{
+ int err = 0;
+
+ if (skb->data[1] == 0x20) {
+ /* Change to operational settings */
+ hci_h4p_set_rts(info, 0);
+
+ err = hci_h4p_wait_for_cts(info, 0, 100);
+ if (err < 0)
+ goto neg_ret;
+
+ hci_h4p_change_speed(info, MAX_BAUD_RATE);
+
+ err = hci_h4p_wait_for_cts(info, 1, 100);
+ if (err < 0)
+ goto neg_ret;
+
+ hci_h4p_set_auto_ctsrts(info, 1, UART_EFR_CTS | UART_EFR_RTS);
+
+ err = hci_h4p_send_alive_packet(info);
+ if (err < 0)
+ goto neg_ret;
+ } else {
+ dev_err(info->dev, "Could not negotiate hci_h4p settings\n");
+ err = -EINVAL;
+ goto neg_ret;
+ }
+
+ kfree_skb(skb);
+ return;
+
+neg_ret:
+ info->init_error = err;
+ complete(&info->init_completion);
+ kfree_skb(skb);
+}
+
+/* H4 packet handling functions */
+static int hci_h4p_get_hdr_len(struct hci_h4p_info *info, u8 pkt_type)
+{
+ long retval;
+
+ switch (pkt_type) {
+ case H4_EVT_PKT:
+ retval = HCI_EVENT_HDR_SIZE;
+ break;
+ case H4_ACL_PKT:
+ retval = HCI_ACL_HDR_SIZE;
+ break;
+ case H4_SCO_PKT:
+ retval = HCI_SCO_HDR_SIZE;
+ break;
+ case H4_NEG_PKT:
+ retval = 11;
+ break;
+ case H4_ALIVE_PKT:
+ retval = 3;
+ break;
+ default:
+ dev_err(info->dev, "Unknown H4 packet type 0x%.2x\n", pkt_type);
+ retval = -1;
+ break;
+ }
+
+ return retval;
+}
+
+static unsigned int hci_h4p_get_data_len(struct hci_h4p_info *info,
+ struct sk_buff *skb)
+{
+ long retval = -1;
+ struct hci_event_hdr *evt_hdr;
+ struct hci_acl_hdr *acl_hdr;
+ struct hci_sco_hdr *sco_hdr;
+
+ switch (bt_cb(skb)->pkt_type) {
+ case H4_EVT_PKT:
+ evt_hdr = (struct hci_event_hdr *)skb->data;
+ retval = evt_hdr->plen;
+ break;
+ case H4_ACL_PKT:
+ acl_hdr = (struct hci_acl_hdr *)skb->data;
+ retval = le16_to_cpu(acl_hdr->dlen);
+ break;
+ case H4_SCO_PKT:
+ sco_hdr = (struct hci_sco_hdr *)skb->data;
+ retval = sco_hdr->dlen;
+ break;
+ case H4_NEG_PKT:
+ retval = 0;
+ break;
+ case H4_ALIVE_PKT:
+ retval = 0;
+ break;
+ }
+
+ return retval;
+}
+
+static inline void hci_h4p_recv_frame(struct hci_h4p_info *info,
+ struct sk_buff *skb)
+{
+
+ if (unlikely(!test_bit(HCI_RUNNING, &info->hdev->flags))) {
+ NBT_DBG("fw_event\n");
+ hci_h4p_parse_fw_event(info, skb);
+ } else {
+ hci_recv_frame(skb);
+ NBT_DBG("Frame sent to upper layer\n");
+ }
+}
+
+static void hci_h4p_rx_tasklet(unsigned long data)
+{
+ u8 byte;
+ unsigned long flags;
+ struct hci_h4p_info *info = (struct hci_h4p_info *)data;
+
+ NBT_DBG("tasklet woke up\n");
+ NBT_DBG_TRANSFER("rx_tasklet woke up\ndata ");
+
+ while (hci_h4p_inb(info, UART_LSR) & UART_LSR_DR) {
+ byte = hci_h4p_inb(info, UART_RX);
+ if (info->garbage_bytes) {
+ info->garbage_bytes--;
+ continue;
+ }
+ if (info->rx_skb == NULL) {
+ info->rx_skb = bt_skb_alloc(HCI_MAX_FRAME_SIZE, GFP_ATOMIC | GFP_DMA);
+ if (!info->rx_skb) {
+ dev_err(info->dev, "Can't allocate memory for new packet\n");
+ goto finish_task;
+ }
+ info->rx_state = WAIT_FOR_PKT_TYPE;
+ info->rx_skb->dev = (void *)info->hdev;
+ }
+ info->hdev->stat.byte_rx++;
+ NBT_DBG_TRANSFER_NF("0x%.2x ", byte);
+ switch (info->rx_state) {
+ case WAIT_FOR_PKT_TYPE:
+ bt_cb(info->rx_skb)->pkt_type = byte;
+ info->rx_count = hci_h4p_get_hdr_len(info, byte);
+ if (info->rx_count < 0) {
+ info->hdev->stat.err_rx++;
+ kfree_skb(info->rx_skb);
+ info->rx_skb = NULL;
+ } else {
+ info->rx_state = WAIT_FOR_HEADER;
+ }
+ break;
+ case WAIT_FOR_HEADER:
+ info->rx_count--;
+ *skb_put(info->rx_skb, 1) = byte;
+ if (info->rx_count == 0) {
+ info->rx_count = hci_h4p_get_data_len(info, info->rx_skb);
+ if (info->rx_count > skb_tailroom(info->rx_skb)) {
+ dev_err(info->dev, "Frame is %ld bytes too long.\n",
+ info->rx_count - skb_tailroom(info->rx_skb));
+ kfree_skb(info->rx_skb);
+ info->rx_skb = NULL;
+ info->garbage_bytes = info->rx_count - skb_tailroom(info->rx_skb);
+ break;
+ }
+ info->rx_state = WAIT_FOR_DATA;
+
+ if (bt_cb(info->rx_skb)->pkt_type == H4_NEG_PKT) {
+ hci_h4p_negotiation_packet(info, info->rx_skb);
+ info->rx_skb = NULL;
+ info->rx_state = WAIT_FOR_PKT_TYPE;
+ goto finish_task;
+ }
+ if (bt_cb(info->rx_skb)->pkt_type == H4_ALIVE_PKT) {
+ hci_h4p_alive_packet(info, info->rx_skb);
+ info->rx_skb = NULL;
+ info->rx_state = WAIT_FOR_PKT_TYPE;
+ goto finish_task;
+ }
+ }
+ break;
+ case WAIT_FOR_DATA:
+ info->rx_count--;
+ *skb_put(info->rx_skb, 1) = byte;
+ if (info->rx_count == 0) {
+ /* H4+ devices should allways send word aligned packets */
+ if (!(info->rx_skb->len % 2)) {
+ info->garbage_bytes++;
+ }
+ hci_h4p_recv_frame(info, info->rx_skb);
+ info->rx_skb = NULL;
+ }
+ break;
+ default:
+ WARN_ON(1);
+ break;
+ }
+ }
+
+finish_task:
+ spin_lock_irqsave(&info->lock, flags);
+ hci_h4p_outb(info, UART_IER, hci_h4p_inb(info, UART_IER) | UART_IER_RDI);
+ spin_unlock_irqrestore(&info->lock, flags);
+
+ NBT_DBG_TRANSFER_NF("\n");
+ NBT_DBG("rx_ended\n");
+}
+
+static void hci_h4p_tx_tasklet(unsigned long data)
+{
+ unsigned int sent = 0;
+ unsigned long flags;
+ struct sk_buff *skb;
+ struct hci_h4p_info *info = (struct hci_h4p_info *)data;
+
+ NBT_DBG("tasklet woke up\n");
+ NBT_DBG_TRANSFER("tx_tasklet woke up\n data ");
+
+ skb = skb_dequeue(&info->txq);
+ if (!skb) {
+ /* No data in buffer */
+ NBT_DBG("skb ready\n");
+ hci_h4p_disable_tx(info);
+ return;
+ }
+
+ /* Copy data to tx fifo */
+ while (!(hci_h4p_inb(info, UART_OMAP_SSR) & UART_OMAP_SSR_TXFULL) &&
+ (sent < skb->len)) {
+ NBT_DBG_TRANSFER_NF("0x%.2x ", skb->data[sent]);
+ hci_h4p_outb(info, UART_TX, skb->data[sent]);
+ sent++;
+ }
+
+ info->hdev->stat.byte_tx += sent;
+ NBT_DBG_TRANSFER_NF("\n");
+ if (skb->len == sent) {
+ kfree_skb(skb);
+ } else {
+ skb_pull(skb, sent);
+ skb_queue_head(&info->txq, skb);
+ }
+
+ spin_lock_irqsave(&info->lock, flags);
+ hci_h4p_outb(info, UART_IER, hci_h4p_inb(info, UART_IER) | UART_IER_THRI);
+ spin_unlock_irqrestore(&info->lock, flags);
+}
+
+static irqreturn_t hci_h4p_interrupt(int irq, void *data)
+{
+ struct hci_h4p_info *info = (struct hci_h4p_info *)data;
+ u8 iir, msr;
+ int ret;
+ unsigned long flags;
+
+ ret = IRQ_NONE;
+
+ iir = hci_h4p_inb(info, UART_IIR);
+ if (iir & UART_IIR_NO_INT) {
+ dev_err(info->dev, "Interrupt but no reason irq 0x%.2x\n", iir);
+ return IRQ_HANDLED;
+ }
+
+ NBT_DBG("In interrupt handler iir 0x%.2x\n", iir);
+
+ iir &= UART_IIR_ID;
+
+ if (iir == UART_IIR_MSI) {
+ msr = hci_h4p_inb(info, UART_MSR);
+ ret = IRQ_HANDLED;
+ }
+ if (iir == UART_IIR_RLSI) {
+ hci_h4p_inb(info, UART_RX);
+ hci_h4p_inb(info, UART_LSR);
+ ret = IRQ_HANDLED;
+ }
+
+ if (iir == UART_IIR_RDI) {
+ spin_lock_irqsave(&info->lock, flags);
+ hci_h4p_outb(info, UART_IER, hci_h4p_inb(info, UART_IER) & ~UART_IER_RDI);
+ spin_unlock_irqrestore(&info->lock, flags);
+ tasklet_schedule(&info->rx_task);
+ ret = IRQ_HANDLED;
+ }
+
+ if (iir == UART_IIR_THRI) {
+ spin_lock_irqsave(&info->lock, flags);
+ hci_h4p_outb(info, UART_IER, hci_h4p_inb(info, UART_IER) & ~UART_IER_THRI);
+ spin_unlock_irqrestore(&info->lock, flags);
+ tasklet_schedule(&info->tx_task);
+ ret = IRQ_HANDLED;
+ }
+
+ return ret;
+}
+
+static irqreturn_t hci_h4p_wakeup_interrupt(int irq, void *dev_inst)
+{
+ struct hci_h4p_info *info = dev_inst;
+ int should_wakeup;
+ struct hci_dev *hdev;
+
+ if (!info->hdev)
+ return IRQ_HANDLED;
+
+ hdev = info->hdev;
+
+ if (!test_bit(HCI_RUNNING, &hdev->flags))
+ return IRQ_HANDLED;
+
+ should_wakeup = gpio_get_value(info->host_wakeup_gpio);
+ NBT_DBG_POWER("gpio interrupt %d\n", should_wakeup);
+ if (should_wakeup) {
+ hci_h4p_enable_rx(info);
+ } else {
+ hci_h4p_disable_rx(info);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static int hci_h4p_reset(struct hci_h4p_info *info)
+{
+ int err;
+
+ hci_h4p_init_uart(info);
+ hci_h4p_set_rts(info, 0);
+
+ gpio_set_value(info->reset_gpio, 0);
+ msleep(100);
+ gpio_set_value(info->bt_wakeup_gpio, 1);
+ gpio_set_value(info->reset_gpio, 1);
+ msleep(100);
+
+ err = hci_h4p_wait_for_cts(info, 1, 10);
+ if (err < 0) {
+ dev_err(info->dev, "No cts from bt chip\n");
+ return err;
+ }
+
+ hci_h4p_set_rts(info, 1);
+
+ return 0;
+}
+
+/* hci callback functions */
+static int hci_h4p_hci_flush(struct hci_dev *hdev)
+{
+ struct hci_h4p_info *info;
+ info = hdev->driver_data;
+
+ skb_queue_purge(&info->txq);
+
+ return 0;
+}
+
+static int hci_h4p_hci_open(struct hci_dev *hdev)
+{
+ struct hci_h4p_info *info;
+ int err;
+ struct sk_buff *neg_cmd_skb;
+ struct sk_buff_head fw_queue;
+
+ info = hdev->driver_data;
+
+ if (test_bit(HCI_RUNNING, &hdev->flags))
+ return 0;
+
+ skb_queue_head_init(&fw_queue);
+ err = hci_h4p_read_fw(info, &fw_queue);
+ if (err < 0) {
+ dev_err(info->dev, "Cannot read firmware\n");
+ return err;
+ }
+ neg_cmd_skb = skb_dequeue(&fw_queue);
+ if (!neg_cmd_skb) {
+ err = -EPROTO;
+ goto err_clean;
+ }
+ info->alive_cmd_skb = skb_dequeue(&fw_queue);
+ if (!info->alive_cmd_skb) {
+ err = -EPROTO;
+ goto err_clean;
+ }
+
+ hci_h4p_set_clk(info, &info->tx_clocks_en, 1);
+ hci_h4p_set_clk(info, &info->rx_clocks_en, 1);
+
+ tasklet_enable(&info->tx_task);
+ tasklet_enable(&info->rx_task);
+ info->rx_state = WAIT_FOR_PKT_TYPE;
+ info->rx_count = 0;
+ info->garbage_bytes = 0;
+ info->rx_skb = NULL;
+ info->pm_enabled = 0;
+ init_completion(&info->fw_completion);
+
+ err = hci_h4p_reset(info);
+ if (err < 0)
+ goto err_clean;
+
+ err = hci_h4p_send_negotiation(info, neg_cmd_skb);
+ neg_cmd_skb = NULL;
+ if (err < 0)
+ goto err_clean;
+
+ err = hci_h4p_send_fw(info, &fw_queue);
+ if (err < 0) {
+ dev_err(info->dev, "Sending firmware failed.\n");
+ goto err_clean;
+ }
+
+ kfree_skb(info->alive_cmd_skb);
+ info->alive_cmd_skb = NULL;
+ info->pm_enabled = 1;
+ info->tx_pm_enabled = 1;
+ info->rx_pm_enabled = 0;
+ set_bit(HCI_RUNNING, &hdev->flags);
+
+ NBT_DBG("hci up and running\n");
+ return 0;
+
+err_clean:
+ hci_h4p_hci_flush(hdev);
+ tasklet_disable(&info->tx_task);
+ tasklet_disable(&info->rx_task);
+ hci_h4p_reset_uart(info);
+ hci_h4p_set_clk(info, &info->tx_clocks_en, 0);
+ hci_h4p_set_clk(info, &info->rx_clocks_en, 0);
+ gpio_set_value(info->reset_gpio, 0);
+ gpio_set_value(info->bt_wakeup_gpio, 0);
+ skb_queue_purge(&fw_queue);
+ kfree_skb(neg_cmd_skb);
+ neg_cmd_skb = NULL;
+ kfree_skb(info->alive_cmd_skb);
+ info->alive_cmd_skb = NULL;
+ kfree_skb(info->rx_skb);
+
+ return err;
+}
+
+static int hci_h4p_hci_close(struct hci_dev *hdev)
+{
+ struct hci_h4p_info *info = hdev->driver_data;
+
+ if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
+ return 0;
+
+ hci_h4p_hci_flush(hdev);
+ del_timer_sync(&info->tx_pm_timer);
+ del_timer_sync(&info->rx_pm_timer);
+ tasklet_disable(&info->tx_task);
+ tasklet_disable(&info->rx_task);
+ hci_h4p_set_clk(info, &info->tx_clocks_en, 1);
+ hci_h4p_set_clk(info, &info->rx_clocks_en, 1);
+ hci_h4p_reset_uart(info);
+ hci_h4p_set_clk(info, &info->tx_clocks_en, 0);
+ hci_h4p_set_clk(info, &info->rx_clocks_en, 0);
+ gpio_set_value(info->reset_gpio, 0);
+ gpio_set_value(info->bt_wakeup_gpio, 0);
+ kfree_skb(info->rx_skb);
+
+ return 0;
+}
+
+static void hci_h4p_hci_destruct(struct hci_dev *hdev)
+{
+}
+
+static int hci_h4p_hci_send_frame(struct sk_buff *skb)
+{
+ struct hci_h4p_info *info;
+ struct hci_dev *hdev = (struct hci_dev *)skb->dev;
+ int err = 0;
+
+ if (!hdev) {
+ printk(KERN_WARNING "hci_h4p: Frame for unknown device\n");
+ return -ENODEV;
+ }
+
+ NBT_DBG("dev %p, skb %p\n", hdev, skb);
+
+ info = hdev->driver_data;
+
+ if (!test_bit(HCI_RUNNING, &hdev->flags)) {
+ dev_warn(info->dev, "Frame for non-running device\n");
+ return -EIO;
+ }
+
+ 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;
+ }
+
+ /* Push frame type to skb */
+ *skb_push(skb, 1) = (bt_cb(skb)->pkt_type);
+ /* We should allways send word aligned data to h4+ devices */
+ if (skb->len % 2) {
+ err = skb_pad(skb, 1);
+ }
+ if (err)
+ return err;
+
+ hci_h4p_enable_tx(info);
+ skb_queue_tail(&info->txq, skb);
+ tasklet_schedule(&info->tx_task);
+
+ return 0;
+}
+
+static int hci_h4p_hci_ioctl(struct hci_dev *hdev, unsigned int cmd, unsigned long arg)
+{
+ return -ENOIOCTLCMD;
+}
+
+static int hci_h4p_register_hdev(struct hci_h4p_info *info)
+{
+ struct hci_dev *hdev;
+
+ /* Initialize and register HCI device */
+
+ hdev = hci_alloc_dev();
+ if (!hdev) {
+ dev_err(info->dev, "Can't allocate memory for device\n");
+ return -ENOMEM;
+ }
+ info->hdev = hdev;
+
+ hdev->dev_type = HCI_UART;
+ hdev->driver_data = info;
+
+ hdev->open = hci_h4p_hci_open;
+ hdev->close = hci_h4p_hci_close;
+ hdev->flush = hci_h4p_hci_flush;
+ hdev->send = hci_h4p_hci_send_frame;
+ hdev->destruct = hci_h4p_hci_destruct;
+ hdev->ioctl = hci_h4p_hci_ioctl;
+
+ hdev->owner = THIS_MODULE;
+
+ if (hci_register_dev(hdev) < 0) {
+ dev_err(info->dev, "hci_h4p: Can't register HCI device %s.\n", hdev->name);
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static int hci_h4p_probe(struct platform_device *pdev)
+{
+ struct omap_bluetooth_config *bt_config;
+ struct hci_h4p_info *info;
+ int irq, err;
+
+ dev_info(&pdev->dev, "Registering HCI H4P device\n");
+ info = kzalloc(sizeof(struct hci_h4p_info), GFP_KERNEL);
+ if (!info)
+ return -ENOMEM;
+
+ info->dev = &pdev->dev;
+ info->pm_enabled = 0;
+ info->tx_pm_enabled = 0;
+ info->rx_pm_enabled = 0;
+ info->garbage_bytes = 0;
+ info->tx_clocks_en = 0;
+ info->rx_clocks_en = 0;
+ tasklet_init(&info->tx_task, hci_h4p_tx_tasklet, (unsigned long)info);
+ tasklet_init(&info->rx_task, hci_h4p_rx_tasklet, (unsigned long)info);
+ /* hci_h4p_hci_open assumes that tasklet is disabled in startup */
+ tasklet_disable(&info->tx_task);
+ tasklet_disable(&info->rx_task);
+ spin_lock_init(&info->lock);
+ spin_lock_init(&info->clocks_lock);
+ skb_queue_head_init(&info->txq);
+ init_timer(&info->tx_pm_timer);
+ info->tx_pm_timer.function = hci_h4p_tx_pm_timer;
+ info->tx_pm_timer.data = (unsigned long)info;
+ init_timer(&info->rx_pm_timer);
+ info->rx_pm_timer.function = hci_h4p_rx_pm_timer;
+ info->rx_pm_timer.data = (unsigned long)info;
+
+ if (pdev->dev.platform_data == NULL) {
+ dev_err(&pdev->dev, "Could not get Bluetooth config data\n");
+ return -ENODATA;
+ }
+
+ bt_config = pdev->dev.platform_data;
+ info->chip_type = bt_config->chip_type;
+ info->bt_wakeup_gpio = bt_config->bt_wakeup_gpio;
+ info->host_wakeup_gpio = bt_config->host_wakeup_gpio;
+ info->reset_gpio = bt_config->reset_gpio;
+ info->bt_sysclk = bt_config->bt_sysclk;
+
+ NBT_DBG("RESET gpio: %d\n", info->reset_gpio);
+ NBT_DBG("BTWU gpio: %d\n", info->bt_wakeup_gpio);
+ NBT_DBG("HOSTWU gpio: %d\n", info->host_wakeup_gpio);
+ NBT_DBG("Uart: %d\n", bt_config->bt_uart);
+ NBT_DBG("sysclk: %d\n", info->bt_sysclk);
+
+ err = gpio_request(info->reset_gpio, "BT reset");
+ if (err < 0) {
+ dev_err(&pdev->dev, "Cannot get GPIO line %d\n",
+ info->reset_gpio);
+ kfree(info);
+ goto cleanup;
+ }
+
+ err = gpio_request(info->bt_wakeup_gpio, "BT wakeup");
+ if (err < 0)
+ {
+ dev_err(info->dev, "Cannot get GPIO line 0x%d",
+ info->bt_wakeup_gpio);
+ gpio_free(info->reset_gpio);
+ kfree(info);
+ goto cleanup;
+ }
+
+ err = gpio_request(info->host_wakeup_gpio, "BT host wakeup");
+ if (err < 0)
+ {
+ dev_err(info->dev, "Cannot get GPIO line %d",
+ info->host_wakeup_gpio);
+ gpio_free(info->reset_gpio);
+ gpio_free(info->bt_wakeup_gpio);
+ kfree(info);
+ goto cleanup;
+ }
+
+ gpio_direction_output(info->reset_gpio, 0);
+ gpio_direction_output(info->bt_wakeup_gpio, 0);
+ gpio_direction_input(info->host_wakeup_gpio);
+
+//FIXME
+#if defined(CONFIG_ARCH_OMAP1)
+# define OMAP_UART1_BASE OMAP1_UART1_BASE
+# define OMAP_UART2_BASE OMAP1_UART2_BASE
+# define OMAP_UART3_BASE OMAP1_UART3_BASE
+#elif defined(CONFIG_ARCH_OMAP2)
+# define OMAP_UART1_BASE OMAP2_UART1_BASE
+# define OMAP_UART2_BASE OMAP2_UART2_BASE
+# define OMAP_UART3_BASE OMAP2_UART3_BASE
+#elif defined(CONFIG_ARCH_OMAP3)
+# define OMAP_UART1_BASE OMAP3_UART1_BASE
+# define OMAP_UART2_BASE OMAP3_UART2_BASE
+# define OMAP_UART3_BASE OMAP3_UART3_BASE
+#elif defined(CONFIG_ARCH_OMAP4)
+# define OMAP_UART1_BASE OMAP4_UART1_BASE
+# define OMAP_UART2_BASE OMAP4_UART2_BASE
+# define OMAP_UART3_BASE OMAP4_UART3_BASE
+#else
+# error
+#endif
+ switch (bt_config->bt_uart) {
+ case 1:
+ if (cpu_is_omap16xx()) {
+ irq = INT_UART1;
+ info->uart_fclk = clk_get(NULL, "uart1_ck");
+ } else if (cpu_is_omap24xx()) {
+ irq = INT_24XX_UART1_IRQ;
+ info->uart_iclk = clk_get(NULL, "uart1_ick");
+ info->uart_fclk = clk_get(NULL, "uart1_fck");
+ }
+ /* FIXME: Use platform_get_resource for the port */
+ info->uart_base = ioremap(OMAP_UART1_BASE, 0x16);
+ if (!info->uart_base)
+ goto cleanup;
+ break;
+ case 2:
+ if (cpu_is_omap16xx()) {
+ irq = INT_UART2;
+ info->uart_fclk = clk_get(NULL, "uart2_ck");
+ } else {
+ irq = INT_24XX_UART2_IRQ;
+ info->uart_iclk = clk_get(NULL, "uart2_ick");
+ info->uart_fclk = clk_get(NULL, "uart2_fck");
+ }
+ /* FIXME: Use platform_get_resource for the port */
+ info->uart_base = ioremap(OMAP_UART2_BASE, 0x16);
+ if (!info->uart_base)
+ goto cleanup;
+ break;
+ case 3:
+ if (cpu_is_omap16xx()) {
+ irq = INT_UART3;
+ info->uart_fclk = clk_get(NULL, "uart3_ck");
+ } else {
+ irq = INT_24XX_UART3_IRQ;
+ info->uart_iclk = clk_get(NULL, "uart3_ick");
+ info->uart_fclk = clk_get(NULL, "uart3_fck");
+ }
+ /* FIXME: Use platform_get_resource for the port */
+ info->uart_base = ioremap(OMAP_UART3_BASE, 0x16);
+ if (!info->uart_base)
+ goto cleanup;
+ break;
+ default:
+ dev_err(info->dev, "No uart defined\n");
+ goto cleanup;
+ }
+
+ info->irq = irq;
+ err = request_irq(irq, hci_h4p_interrupt, 0, "hci_h4p", (void *)info);
+ if (err < 0) {
+ dev_err(info->dev, "hci_h4p: unable to get IRQ %d\n", irq);
+ goto cleanup;
+ }
+
+ err = request_irq(gpio_to_irq(info->host_wakeup_gpio),
+ hci_h4p_wakeup_interrupt,
+ IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
+ "hci_h4p_wkup", (void *)info);
+ if (err < 0) {
+ dev_err(info->dev, "hci_h4p: unable to get wakeup IRQ %d\n",
+ gpio_to_irq(info->host_wakeup_gpio));
+ free_irq(irq, (void *)info);
+ goto cleanup;
+ }
+
+ hci_h4p_set_clk(info, &info->tx_clocks_en, 1);
+ hci_h4p_set_auto_ctsrts(info, 0, UART_EFR_CTS | UART_EFR_RTS);
+ err = hci_h4p_init_uart(info);
+ if (err < 0)
+ goto cleanup_irq;
+ err = hci_h4p_reset(info);
+ if (err < 0)
+ goto cleanup_irq;
+ err = hci_h4p_wait_for_cts(info, 1, 10);
+ if (err < 0)
+ goto cleanup_irq;
+ hci_h4p_set_clk(info, &info->tx_clocks_en, 0);
+
+ platform_set_drvdata(pdev, info);
+ err = hci_h4p_sysfs_create_files(info->dev);
+ if (err < 0)
+ goto cleanup_irq;
+
+ if (hci_h4p_register_hdev(info) < 0) {
+ dev_err(info->dev, "failed to register hci_h4p hci device\n");
+ goto cleanup_irq;
+ }
+ gpio_set_value(info->reset_gpio, 0);
+
+ return 0;
+
+cleanup_irq:
+ free_irq(irq, (void *)info);
+ free_irq(gpio_to_irq(info->host_wakeup_gpio), (void *)info);
+cleanup:
+ gpio_set_value(info->reset_gpio, 0);
+ gpio_free(info->reset_gpio);
+ gpio_free(info->bt_wakeup_gpio);
+ gpio_free(info->host_wakeup_gpio);
+ kfree(info);
+
+ return err;
+
+}
+
+static int hci_h4p_remove(struct platform_device *dev)
+{
+ struct hci_h4p_info *info;
+
+ info = platform_get_drvdata(dev);
+
+ hci_h4p_hci_close(info->hdev);
+ free_irq(gpio_to_irq(info->host_wakeup_gpio), (void *) info);
+ hci_free_dev(info->hdev);
+ gpio_free(info->reset_gpio);
+ gpio_free(info->bt_wakeup_gpio);
+ gpio_free(info->host_wakeup_gpio);
+ free_irq(info->irq, (void *) info);
+ kfree(info);
+
+ return 0;
+}
+
+static struct platform_driver hci_h4p_driver = {
+ .probe = hci_h4p_probe,
+ .remove = hci_h4p_remove,
+ .driver = {
+ .name = "hci_h4p",
+ },
+};
+
+static int __init hci_h4p_init(void)
+{
+ int err = 0;
+
+ /* Register the driver with LDM */
+ err = platform_driver_register(&hci_h4p_driver);
+ if (err < 0)
+ printk(KERN_WARNING "failed to register hci_h4p driver\n");
+
+ return err;
+}
+
+static void __exit hci_h4p_exit(void)
+{
+ platform_driver_unregister(&hci_h4p_driver);
+}
+
+module_init(hci_h4p_init);
+module_exit(hci_h4p_exit);
+
+MODULE_DESCRIPTION("h4 driver with nokia extensions");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Ville Tervo");
--- /dev/null
+++ b/drivers/bluetooth/hci_h4p/fw.c
@@ -0,0 +1,155 @@
+/*
+ * This file is part of hci_h4p bluetooth driver
+ *
+ * Copyright (C) 2005, 2006 Nokia Corporation.
+ *
+ * Contact: Ville Tervo <ville.tervo@nokia.com>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/skbuff.h>
+#include <linux/firmware.h>
+#include <linux/clk.h>
+
+#include <net/bluetooth/bluetooth.h>
+
+#include "hci_h4p.h"
+
+#define BT_CHIP_TI 2
+#define BT_CHIP_CSR 1
+
+static int fw_pos;
+
+/* Firmware handling */
+static int hci_h4p_open_firmware(struct hci_h4p_info *info,
+ const struct firmware **fw_entry)
+{
+ int err;
+
+ fw_pos = 0;
+ NBT_DBG_FW("Opening %d firmware\n", info->chip_type);
+ switch (info->chip_type) {
+ case BT_CHIP_TI:
+ err = request_firmware(fw_entry, "brf6150fw.bin", info->dev);
+ break;
+ case BT_CHIP_CSR:
+ err = request_firmware(fw_entry, "bc4fw.bin", info->dev);
+ break;
+ default:
+ dev_err(info->dev, "Invalid chip type\n");
+ *fw_entry = NULL;
+ err = -EINVAL;
+ }
+
+ return err;
+}
+
+static void hci_h4p_close_firmware(const struct firmware *fw_entry)
+{
+ release_firmware(fw_entry);
+}
+
+/* Read fw. Return length of the command. If no more commands in
+ * fw 0 is returned. In error case return value is negative.
+ */
+static int hci_h4p_read_fw_cmd(struct hci_h4p_info *info, struct sk_buff **skb,
+ const struct firmware *fw_entry, int how)
+{
+ unsigned int cmd_len;
+
+ if (fw_pos >= fw_entry->size) {
+ return 0;
+ }
+
+ cmd_len = fw_entry->data[fw_pos++];
+ if (!cmd_len)
+ return 0;
+
+ if (fw_pos + cmd_len > fw_entry->size) {
+ dev_err(info->dev, "Corrupted firmware image\n");
+ return -EMSGSIZE;
+ }
+
+ *skb = bt_skb_alloc(cmd_len, how);
+ if (!*skb) {
+ dev_err(info->dev, "Cannot reserve memory for buffer\n");
+ return -ENOMEM;
+ }
+ memcpy(skb_put(*skb, cmd_len), &fw_entry->data[fw_pos], cmd_len);
+
+ fw_pos += cmd_len;
+
+ return (*skb)->len;
+}
+
+int hci_h4p_read_fw(struct hci_h4p_info *info, struct sk_buff_head *fw_queue)
+{
+ const struct firmware *fw_entry = NULL;
+ struct sk_buff *skb = NULL;
+ int err;
+
+ err = hci_h4p_open_firmware(info, &fw_entry);
+ if (err < 0 || !fw_entry)
+ goto err_clean;
+
+ while ((err = hci_h4p_read_fw_cmd(info, &skb, fw_entry, GFP_KERNEL))) {
+ if (err < 0 || !skb)
+ goto err_clean;
+
+ skb_queue_tail(fw_queue, skb);
+ }
+
+err_clean:
+ hci_h4p_close_firmware(fw_entry);
+ return err;
+}
+
+int hci_h4p_send_fw(struct hci_h4p_info *info, struct sk_buff_head *fw_queue)
+{
+ int err;
+
+ switch(info->chip_type) {
+ case BT_CHIP_CSR:
+ err = hci_h4p_bc4_send_fw(info, fw_queue);
+ break;
+ case BT_CHIP_TI:
+ err = hci_h4p_brf6150_send_fw(info, fw_queue);
+ break;
+ default:
+ dev_err(info->dev, "Don't know how to send firmware\n");
+ err = -EINVAL;
+ }
+
+ return err;
+}
+
+void hci_h4p_parse_fw_event(struct hci_h4p_info *info, struct sk_buff *skb)
+{
+ switch (info->chip_type) {
+ case BT_CHIP_CSR:
+ hci_h4p_bc4_parse_fw_event(info, skb);
+ break;
+ case BT_CHIP_TI:
+ hci_h4p_brf6150_parse_fw_event(info, skb);
+ break;
+ default:
+ dev_err(info->dev, "Don't know how to parse fw event\n");
+ info->fw_error = -EINVAL;
+ }
+
+ return;
+}
--- /dev/null
+++ b/drivers/bluetooth/hci_h4p/fw-csr.c
@@ -0,0 +1,149 @@
+/*
+ * This file is part of hci_h4p bluetooth driver
+ *
+ * Copyright (C) 2005, 2006 Nokia Corporation.
+ *
+ * Contact: Ville Tervo <ville.tervo@nokia.com>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/skbuff.h>
+#include <linux/delay.h>
+#include <linux/serial_reg.h>
+
+#include "hci_h4p.h"
+
+void hci_h4p_bc4_parse_fw_event(struct hci_h4p_info *info, struct sk_buff *skb)
+{
+ /* Check if this is fw packet */
+ if (skb->data[0] != 0xff) {
+ hci_recv_frame(skb);
+ return;
+ }
+
+ if (skb->data[11] || skb->data[12]) {
+ dev_err(info->dev, "Firmware sending command failed\n");
+ info->fw_error = -EPROTO;
+ }
+
+ kfree_skb(skb);
+ complete(&info->fw_completion);
+}
+
+int hci_h4p_bc4_send_fw(struct hci_h4p_info *info,
+ struct sk_buff_head *fw_queue)
+{
+ struct sk_buff *skb;
+ unsigned int offset;
+ int retries, count, i;
+
+ info->fw_error = 0;
+
+ NBT_DBG_FW("Sending firmware\n");
+ skb = skb_dequeue(fw_queue);
+
+ if (!skb)
+ return -ENOMSG;
+
+ info->bdaddr[0] = 0x00;
+ info->bdaddr[1] = 0x1D;
+ info->bdaddr[2] = 0x6E;
+ info->bdaddr[3] = 0xD4;
+ info->bdaddr[4] = 0xF0;
+ info->bdaddr[5] = 0x37;
+
+ /* Check if this is bd_address packet */
+ if (skb->data[15] == 0x01 && skb->data[16] == 0x00) {
+ dev_info(info->dev, "bd_address packet found\n");
+ offset = 21;
+ skb->data[offset + 1] = 0x00;
+ skb->data[offset + 5] = 0x00;
+ skb->data[offset + 7] = info->bdaddr[0];
+ skb->data[offset + 6] = info->bdaddr[1];
+ skb->data[offset + 4] = info->bdaddr[2];
+ skb->data[offset + 0] = info->bdaddr[3];
+ skb->data[offset + 3] = info->bdaddr[4];
+ skb->data[offset + 2] = info->bdaddr[5];
+ }
+
+ for (i = 0; i < 6; i++) {
+ if (info->bdaddr[i] != 0x00)
+ break;
+ }
+
+ /* if (i > 5) {
+ dev_info(info->dev, "Valid bluetooth address not found.\n");
+ kfree_skb(skb);
+ return -ENODEV;
+ } */
+
+ for (count = 1; ; count++) {
+ NBT_DBG_FW("Sending firmware command %d\n", count);
+ init_completion(&info->fw_completion);
+ skb_queue_tail(&info->txq, skb);
+ tasklet_schedule(&info->tx_task);
+
+ skb = skb_dequeue(fw_queue);
+ if (!skb)
+ break;
+
+ if (!wait_for_completion_timeout(&info->fw_completion,
+ msecs_to_jiffies(1000))) {
+ dev_err(info->dev, "No reply to fw command\n");
+ return -ETIMEDOUT;
+ }
+
+ if (info->fw_error) {
+ dev_err(info->dev, "FW error\n");
+ return -EPROTO;
+ }
+ };
+
+ /* Wait for chip warm reset */
+ retries = 100;
+ while ((!skb_queue_empty(&info->txq) ||
+ !(hci_h4p_inb(info, UART_LSR) & UART_LSR_TEMT)) &&
+ retries--) {
+ msleep(10);
+ }
+ if (!retries) {
+ dev_err(info->dev, "Transmitter not empty\n");
+ return -ETIMEDOUT;
+ }
+
+ hci_h4p_change_speed(info, BC4_MAX_BAUD_RATE);
+
+ if (hci_h4p_wait_for_cts(info, 1, 100)) {
+ dev_err(info->dev, "cts didn't go down after final speed change\n");
+ return -ETIMEDOUT;
+ }
+
+ retries = 100;
+ do {
+ init_completion(&info->init_completion);
+ hci_h4p_send_alive_packet(info);
+ retries--;
+ } while (!wait_for_completion_timeout(&info->init_completion, 100) &&
+ retries > 0);
+
+ if (!retries) {
+ dev_err(info->dev, "No alive reply after speed change\n");
+ return -ETIMEDOUT;
+ }
+
+ return 0;
+}
--- /dev/null
+++ b/drivers/bluetooth/hci_h4p/fw-ti.c
@@ -0,0 +1,90 @@
+/*
+ * This file is part of hci_h4p bluetooth driver
+ *
+ * Copyright (C) 2005, 2006 Nokia Corporation.
+ *
+ * Contact: Ville Tervo <ville.tervo@nokia.com>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/skbuff.h>
+
+#include "hci_h4p.h"
+
+void hci_h4p_brf6150_parse_fw_event(struct hci_h4p_info *info,
+ struct sk_buff *skb)
+{
+ struct hci_fw_event *ev;
+ int err = 0;
+
+ if (bt_cb(skb)->pkt_type != H4_EVT_PKT) {
+ dev_err(info->dev, "Got non event fw packet.\n");
+ err = -EPROTO;
+ goto ret;
+ }
+
+ ev = (struct hci_fw_event *)skb->data;
+ if (ev->hev.evt != HCI_EV_CMD_COMPLETE) {
+ dev_err(info->dev, "Got non cmd complete fw event\n");
+ err = -EPROTO;
+ goto ret;
+ }
+
+ if (ev->status != 0) {
+ dev_err(info->dev, "Got error status from fw command\n");
+ err = -EPROTO;
+ goto ret;
+ }
+
+ret:
+ info->fw_error = err;
+ complete(&info->fw_completion);
+}
+
+int hci_h4p_brf6150_send_fw(struct hci_h4p_info *info, struct sk_buff_head *fw_queue)
+{
+ struct sk_buff *skb;
+ int err = 0;
+
+ info->fw_error = 0;
+
+ while ((skb = skb_dequeue(fw_queue)) != NULL) {
+ /* We should allways send word aligned data to h4+ devices */
+ if (skb->len % 2) {
+ err = skb_pad(skb, 1);
+ }
+ if (err)
+ return err;
+
+ init_completion(&info->fw_completion);
+ skb_queue_tail(&info->txq, skb);
+ tasklet_schedule(&info->tx_task);
+
+ if (!wait_for_completion_timeout(&info->fw_completion, HZ)) {
+ dev_err(info->dev, "Timeout while sending brf6150 fw\n");
+ return -ETIMEDOUT;
+ }
+
+ if (info->fw_error) {
+ dev_err(info->dev, "There was fw_error while sending bfr6150 fw\n");
+ return -EPROTO;
+ }
+ }
+ NBT_DBG_FW("Firmware sent\n");
+
+ return 0;
+}
--- /dev/null
+++ b/drivers/bluetooth/hci_h4p/hci_h4p.h
@@ -0,0 +1,183 @@
+/*
+ * This file is part of hci_h4p bluetooth driver
+ *
+ * Copyright (C) 2005, 2006 Nokia Corporation.
+ *
+ * Contact: Ville Tervo <ville.tervo@nokia.com>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <mach/board.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+#include <net/bluetooth/hci.h>
+
+#ifndef __DRIVERS_BLUETOOTH_HCI_H4P_H
+#define __DRIVERS_BLUETOOTH_HCI_H4P_H
+
+#define UART_SYSC_OMAP_RESET 0x03
+#define UART_SYSS_RESETDONE 0x01
+#define UART_OMAP_SCR_EMPTY_THR 0x08
+#define UART_OMAP_SCR_WAKEUP 0x10
+#define UART_OMAP_SSR_WAKEUP 0x02
+#define UART_OMAP_SSR_TXFULL 0x01
+
+#if 0
+#define NBT_DBG(fmt, arg...) printk("%s: " fmt "" , __FUNCTION__ , ## arg)
+#else
+#define NBT_DBG(...)
+#endif
+
+#if 0
+#define NBT_DBG_FW(fmt, arg...) printk("%s: " fmt "" , __FUNCTION__ , ## arg)
+#else
+#define NBT_DBG_FW(...)
+#endif
+
+#if 0
+#define NBT_DBG_POWER(fmt, arg...) printk("%s: " fmt "" , __FUNCTION__ , ## arg)
+#else
+#define NBT_DBG_POWER(...)
+#endif
+
+#if 0
+#define NBT_DBG_TRANSFER(fmt, arg...) printk("%s: " fmt "" , __FUNCTION__ , ## arg)
+#else
+#define NBT_DBG_TRANSFER(...)
+#endif
+
+#if 0
+#define NBT_DBG_TRANSFER_NF(fmt, arg...) printk(fmt "" , ## arg)
+#else
+#define NBT_DBG_TRANSFER_NF(...)
+#endif
+
+#if 0
+#define NBT_DBG_DMA(fmt, arg...) printk("%s: " fmt "" , __FUNCTION__ , ## arg)
+#else
+#define NBT_DBG_DMA(...)
+#endif
+
+struct hci_h4p_info {
+ struct hci_dev *hdev;
+ spinlock_t lock;
+
+ void __iomem *uart_base;
+ unsigned long uart_phys_base;
+ int irq;
+ struct device *dev;
+ u8 bdaddr[6];
+ u8 chip_type;
+ u8 bt_wakeup_gpio;
+ u8 host_wakeup_gpio;
+ u8 reset_gpio;
+ u8 bt_sysclk;
+
+
+ struct sk_buff_head fw_queue;
+ struct sk_buff *alive_cmd_skb;
+ struct completion init_completion;
+ struct completion fw_completion;
+ int fw_error;
+ int init_error;
+
+ struct sk_buff_head txq;
+ struct tasklet_struct tx_task;
+
+ struct sk_buff *rx_skb;
+ long rx_count;
+ unsigned long rx_state;
+ unsigned long garbage_bytes;
+ struct tasklet_struct rx_task;
+
+ int pm_enabled;
+ int tx_pm_enabled;
+ int rx_pm_enabled;
+ struct timer_list tx_pm_timer;
+ struct timer_list rx_pm_timer;
+
+ int tx_clocks_en;
+ int rx_clocks_en;
+ spinlock_t clocks_lock;
+ struct clk *uart_iclk;
+ struct clk *uart_fclk;
+};
+
+#define MAX_BAUD_RATE 921600
+#define BC4_MAX_BAUD_RATE 3692300
+#define UART_CLOCK 48000000
+#define BT_INIT_DIVIDER 320
+#define BT_BAUDRATE_DIVIDER 384000000
+#define BT_SYSCLK_DIV 1000
+#define INIT_SPEED 120000
+
+#define H4_TYPE_SIZE 1
+
+/* H4+ packet types */
+#define H4_CMD_PKT 0x01
+#define H4_ACL_PKT 0x02
+#define H4_SCO_PKT 0x03
+#define H4_EVT_PKT 0x04
+#define H4_NEG_PKT 0x06
+#define H4_ALIVE_PKT 0x07
+
+/* TX states */
+#define WAIT_FOR_PKT_TYPE 1
+#define WAIT_FOR_HEADER 2
+#define WAIT_FOR_DATA 3
+
+struct hci_fw_event {
+ struct hci_event_hdr hev;
+ struct hci_ev_cmd_complete cmd;
+ u8 status;
+} __attribute__ ((packed));
+
+struct hci_bc4_set_bdaddr {
+ u8 type;
+ struct hci_command_hdr cmd_hdr;
+} __attribute__ ((packed));
+
+int hci_h4p_send_alive_packet(struct hci_h4p_info *info);
+
+void hci_h4p_bc4_parse_fw_event(struct hci_h4p_info *info,
+ struct sk_buff *skb);
+int hci_h4p_bc4_send_fw(struct hci_h4p_info *info,
+ struct sk_buff_head *fw_queue);
+
+void hci_h4p_brf6150_parse_fw_event(struct hci_h4p_info *info,
+ struct sk_buff *skb);
+int hci_h4p_brf6150_send_fw(struct hci_h4p_info *info,
+ struct sk_buff_head *fw_queue);
+
+int hci_h4p_read_fw(struct hci_h4p_info *info, struct sk_buff_head *fw_queue);
+int hci_h4p_send_fw(struct hci_h4p_info *info, struct sk_buff_head *fw_queue);
+void hci_h4p_parse_fw_event(struct hci_h4p_info *info, struct sk_buff *skb);
+
+int hci_h4p_sysfs_create_files(struct device *dev);
+
+void hci_h4p_outb(struct hci_h4p_info *info, unsigned int offset, u8 val);
+u8 hci_h4p_inb(struct hci_h4p_info *info, unsigned int offset);
+void hci_h4p_set_rts(struct hci_h4p_info *info, int active);
+int hci_h4p_wait_for_cts(struct hci_h4p_info *info, int active, int timeout_ms);
+void __hci_h4p_set_auto_ctsrts(struct hci_h4p_info *info, int on, u8 which);
+void hci_h4p_set_auto_ctsrts(struct hci_h4p_info *info, int on, u8 which);
+void hci_h4p_change_speed(struct hci_h4p_info *info, unsigned long speed);
+int hci_h4p_reset_uart(struct hci_h4p_info *info);
+int hci_h4p_init_uart(struct hci_h4p_info *info);
+
+#endif /* __DRIVERS_BLUETOOTH_HCI_H4P_H */
--- /dev/null
+++ b/drivers/bluetooth/hci_h4p/Makefile
@@ -0,0 +1,7 @@
+#
+# Makefile for the Linux Bluetooth HCI device drivers.
+#
+
+obj-$(CONFIG_BT_HCIH4P) += hci_h4p.o
+
+hci_h4p-objs := core.o fw.o uart.o sysfs.o fw-ti.o fw-csr.o
--- /dev/null
+++ b/drivers/bluetooth/hci_h4p/sysfs.c
@@ -0,0 +1,84 @@
+/*
+ * This file is part of hci_h4p bluetooth driver
+ *
+ * Copyright (C) 2005, 2006 Nokia Corporation.
+ *
+ * Contact: Ville Tervo <ville.tervo@nokia.com>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+
+#include "hci_h4p.h"
+
+#ifdef CONFIG_SYSFS
+
+static ssize_t hci_h4p_store_bdaddr(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct hci_h4p_info *info = (struct hci_h4p_info*)dev_get_drvdata(dev);
+ unsigned int bdaddr[6];
+ int ret, i;
+
+ dev_info(info->dev, "HCI_H4P_STORE_BDADDR called\n");
+
+ ret = sscanf(buf, "%2x:%2x:%2x:%2x:%2x:%2x\n",
+ &bdaddr[0], &bdaddr[1], &bdaddr[2],
+ &bdaddr[3], &bdaddr[4], &bdaddr[5]);
+
+ if (ret != 6) {
+ dev_info(info->dev, "bdaddr isn't found\n");
+ return -EINVAL;
+ }
+
+ //for (i = 0; i < 6; i++)
+ //info->bdaddr[i] = bdaddr[i] & 0xff;
+
+ info->bdaddr[0] = 0x00;
+ info->bdaddr[1] = 0x1D;
+ info->bdaddr[2] = 0x6E;
+ info->bdaddr[3] = 0xD4;
+ info->bdaddr[4] = 0xF0;
+ info->bdaddr[5] = 0x37;
+
+ return count;
+}
+
+static ssize_t hci_h4p_show_bdaddr(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct hci_h4p_info *info = (struct hci_h4p_info*)dev_get_drvdata(dev);
+
+ return sprintf(buf, "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x\n",
+ info->bdaddr[0],
+ info->bdaddr[1],
+ info->bdaddr[2],
+ info->bdaddr[3],
+ info->bdaddr[4],
+ info->bdaddr[5]);
+}
+
+static DEVICE_ATTR(bdaddr, S_IRUGO | S_IWUSR, hci_h4p_show_bdaddr, hci_h4p_store_bdaddr);
+int hci_h4p_sysfs_create_files(struct device *dev)
+{
+ return device_create_file(dev, &dev_attr_bdaddr);
+}
+
+#endif
--- /dev/null
+++ b/drivers/bluetooth/hci_h4p/uart.c
@@ -0,0 +1,169 @@
+/*
+ * This file is part of hci_h4p bluetooth driver
+ *
+ * Copyright (C) 2005, 2006 Nokia Corporation.
+ *
+ * Contact: Ville Tervo <ville.tervo@nokia.com>
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <linux/serial_reg.h>
+#include <linux/delay.h>
+#include <linux/clk.h>
+
+#include <asm/io.h>
+
+#include "hci_h4p.h"
+
+inline void hci_h4p_outb(struct hci_h4p_info *info, unsigned int offset, u8 val)
+{
+ offset <<= 2;
+ __raw_writeb(val, info->uart_base + offset);
+ //outb(val, info->uart_base + (offset << 2));
+}
+
+inline u8 hci_h4p_inb(struct hci_h4p_info *info, unsigned int offset)
+{
+ offset <<= 2;
+ return (u8)__raw_readb(info->uart_base + offset);
+ //return (unsigned int)__raw_readb(up->membase + offset);
+ //return inb(info->uart_base + (offset << 2));
+}
+
+void hci_h4p_set_rts(struct hci_h4p_info *info, int active)
+{
+ u8 b;
+
+ b = hci_h4p_inb(info, UART_MCR);
+ if (active)
+ b |= UART_MCR_RTS;
+ else
+ b &= ~UART_MCR_RTS;
+ hci_h4p_outb(info, UART_MCR, b);
+}
+
+int hci_h4p_wait_for_cts(struct hci_h4p_info *info, int active,
+ int timeout_ms)
+{
+ int okay;
+ unsigned long timeout;
+
+ okay = 0;
+ timeout = jiffies + msecs_to_jiffies(timeout_ms);
+ for (;;) {
+ int state;
+
+ state = hci_h4p_inb(info, UART_MSR) & UART_MSR_CTS;
+ if (active) {
+ if (state)
+ return 0;
+ } else {
+ if (!state)
+ return 0;
+ }
+ if (time_after(jiffies, timeout))
+ return -ETIMEDOUT;
+ }
+}
+
+void __hci_h4p_set_auto_ctsrts(struct hci_h4p_info *info, int on, u8 which)
+{
+ u8 lcr, b;
+
+ lcr = hci_h4p_inb(info, UART_LCR);
+ hci_h4p_outb(info, UART_LCR, 0xbf);
+ b = hci_h4p_inb(info, UART_EFR);
+ if (on)
+ b |= which;
+ else
+ b &= ~which;
+ hci_h4p_outb(info, UART_EFR, b);
+ hci_h4p_outb(info, UART_LCR, lcr);
+}
+
+void hci_h4p_set_auto_ctsrts(struct hci_h4p_info *info, int on, u8 which)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&info->lock, flags);
+ __hci_h4p_set_auto_ctsrts(info, on, which);
+ spin_unlock_irqrestore(&info->lock, flags);
+}
+
+void hci_h4p_change_speed(struct hci_h4p_info *info, unsigned long speed)
+{
+ unsigned int divisor;
+ u8 lcr, mdr1;
+
+ NBT_DBG("Setting speed %lu\n", speed);
+
+ if (speed >= 460800) {
+ divisor = UART_CLOCK / 13 / speed;
+ mdr1 = 3;
+ } else {
+ divisor = UART_CLOCK / 16 / speed;
+ mdr1 = 0;
+ }
+
+ hci_h4p_outb(info, UART_OMAP_MDR1, 7); /* Make sure UART mode is disabled */
+ lcr = hci_h4p_inb(info, UART_LCR);
+ hci_h4p_outb(info, UART_LCR, UART_LCR_DLAB); /* Set DLAB */
+ hci_h4p_outb(info, UART_DLL, divisor & 0xff); /* Set speed */
+ hci_h4p_outb(info, UART_DLM, divisor >> 8);
+ hci_h4p_outb(info, UART_LCR, lcr);
+ hci_h4p_outb(info, UART_OMAP_MDR1, mdr1); /* Make sure UART mode is enabled */
+}
+
+int hci_h4p_reset_uart(struct hci_h4p_info *info)
+{
+ int count = 0;
+
+ /* Reset the UART */
+ hci_h4p_outb(info, UART_OMAP_SYSC, UART_SYSC_OMAP_RESET);
+ while (!(hci_h4p_inb(info, UART_OMAP_SYSS) & UART_SYSS_RESETDONE)) {
+ if (count++ > 20000) {
+ dev_err(info->dev, "hci_h4p: UART reset timeout\n");
+ return -ENODEV;
+ }
+ udelay(1);
+ }
+
+ return 0;
+}
+
+int hci_h4p_init_uart(struct hci_h4p_info *info)
+{
+ int err;
+
+ err = hci_h4p_reset_uart(info);
+ if (err < 0)
+ return err;
+
+ /* Enable and setup FIFO */
+ hci_h4p_outb(info, UART_LCR, UART_LCR_WLEN8);
+ hci_h4p_outb(info, UART_OMAP_MDR1, 0x00); /* Make sure UART mode is enabled */
+ hci_h4p_outb(info, UART_OMAP_SCR, 0x80);
+ hci_h4p_outb(info, UART_EFR, UART_EFR_ECB);
+ hci_h4p_outb(info, UART_MCR, UART_MCR_TCRTLR);
+ hci_h4p_outb(info, UART_TI752_TLR, 0x1f);
+ hci_h4p_outb(info, UART_TI752_TCR, 0xef);
+ hci_h4p_outb(info, UART_FCR, UART_FCR_ENABLE_FIFO | UART_FCR_CLEAR_RCVR |
+ UART_FCR_CLEAR_XMIT | UART_FCR_R_TRIG_00);
+ hci_h4p_outb(info, UART_IER, UART_IER_RDI);
+
+ return 0;
+}
--- a/drivers/bluetooth/Kconfig
+++ b/drivers/bluetooth/Kconfig
@@ -173,6 +173,16 @@ config BT_HCIBTUART
Say Y here to compile support for HCI UART devices into the
kernel or say M to compile it as module (btuart_cs).
+config BT_HCIH4P
+ tristate "HCI driver with H4 Nokia extensions"
+ depends on BT && ARCH_OMAP
+ help
+ Bluetooth HCI driver with H4 extensions. This driver provides
+ support for H4+ Bluetooth chip with vendor-specific H4 extensions.
+
+ Say Y here to compile support for h4 extended devices into the kernel
+ or say M to compile it as module (hci_h4p).
+
config BT_HCIVHCI
tristate "HCI VHCI (Virtual HCI device) driver"
help
--- a/drivers/bluetooth/Makefile
+++ b/drivers/bluetooth/Makefile
@@ -11,6 +11,7 @@ obj-$(CONFIG_BT_HCIDTL1) += dtl1_cs.o
obj-$(CONFIG_BT_HCIBT3C) += bt3c_cs.o
obj-$(CONFIG_BT_HCIBLUECARD) += bluecard_cs.o
obj-$(CONFIG_BT_HCIBTUART) += btuart_cs.o
+obj-$(CONFIG_BT_HCIH4P) += hci_h4p/
obj-$(CONFIG_BT_HCIBTUSB) += btusb.o
obj-$(CONFIG_BT_HCIBTSDIO) += btsdio.o
Reference in a new issue View git blame Copy permalink