X-Git-Url: http://www.pilppa.org/gitweb/gitweb.cgi?p=linux-2.6-omap-h63xx.git;a=blobdiff_plain;f=drivers%2Fbluetooth%2Fhci_h4p%2Fcore.c;fp=drivers%2Fbluetooth%2Fhci_h4p%2Fcore.c;h=a5b76ad9bdb3155efbf518563fd9415f7fbcc0bc;hp=0000000000000000000000000000000000000000;hb=0d5f2216edfeb9904e0d6512f803b0f93871baaf;hpb=14fc69723d3442ef46f8f82b3f481e82f06a346d diff --git a/drivers/bluetooth/hci_h4p/core.c b/drivers/bluetooth/hci_h4p/core.c new file mode 100644 index 00000000000..a5b76ad9bdb --- /dev/null +++ b/drivers/bluetooth/hci_h4p/core.c @@ -0,0 +1,1013 @@ +/* + * This file is part of hci_h4p bluetooth driver + * + * Copyright (C) 2005, 2006 Nokia Corporation. + * + * Contact: Ville Tervo + * + * 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 + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#include +#include +#include + +#include "hci_h4p.h" + +#define PM_TIMEOUT 200 + +/* 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->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); + + 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");