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staging/bluetooth: Add hci_h4p driver

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Add hci_h4p bluetooth driver to staging tree. This device is used
for example on Nokia N900 cell phone.

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Thanks-to: Sebastian Reichel <sre@debian.org>
Thanks-to: Joe Perches <joe@perches.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Pavel Machek 2014-01-21 21:56:27 +01:00 committed by Greg Kroah-Hartman
parent be973fcd81
commit 91eef3e2fe
13 changed files with 2430 additions and 0 deletions
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2
drivers/staging/Kconfig
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@ -148,4 +148,6 @@ source "drivers/staging/dgap/Kconfig"
source "drivers/staging/gs_fpgaboot/Kconfig"
source "drivers/staging/nokia_h4p/Kconfig"
endif # STAGING

1
drivers/staging/Makefile
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@ -66,3 +66,4 @@ obj-$(CONFIG_DGNC) += dgnc/
obj-$(CONFIG_DGAP) += dgap/
obj-$(CONFIG_MTD_SPINAND_MT29F) += mt29f_spinand/
obj-$(CONFIG_GS_FPGABOOT) += gs_fpgaboot/
obj-$(CONFIG_BT_NOKIA_H4P) += nokia_h4p/

9
drivers/staging/nokia_h4p/Kconfig Normal file
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@ -0,0 +1,9 @@
config BT_NOKIA_H4P
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 (btnokia_h4p).

6
drivers/staging/nokia_h4p/Makefile Normal file
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@ -0,0 +1,6 @@
obj-$(CONFIG_BT_NOKIA_H4P) += btnokia_h4p.o
btnokia_h4p-objs := nokia_core.o nokia_fw.o nokia_uart.o nokia_fw-csr.o \
nokia_fw-bcm.o nokia_fw-ti1273.o
ccflags-y += -D__CHECK_ENDIAN__

140
drivers/staging/nokia_h4p/TODO Normal file
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@ -0,0 +1,140 @@
Few attempts to submission have been made, last review comments were received in
Date: Wed, 15 Jan 2014 19:01:51 -0800
From: Marcel Holtmann <marcel@holtmann.org>
Subject: Re: [PATCH v6] Bluetooth: Add hci_h4p driver
Some code refactoring is still needed.
TODO:
> +++ b/drivers/bluetooth/hci_h4p.h
can we please get the naming straight. File names do not start with
hci_ anymore. We moved away from it since that term is too generic.
> +#define FW_NAME_TI1271_LE "ti1273_le.bin"
> +#define FW_NAME_TI1271 "ti1273.bin"
> +#define FW_NAME_BCM2048 "bcmfw.bin"
> +#define FW_NAME_CSR "bc4fw.bin"
We do these have to be global in a header file. This should be
confined to the specific firmware part.
> +struct hci_h4p_info {
Can we please get rid of the hci_ prefix for everything. Copying from
drivers that are over 10 years old is not a good idea. Please look at
recent ones.
> + struct timer_list lazy_release;
Timer? Not delayed work?
> +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);
> +void hci_h4p_init_uart(struct hci_h4p_info *info);
> +void hci_h4p_enable_tx(struct hci_h4p_info *info);
> +void hci_h4p_store_regs(struct hci_h4p_info *info);
> +void hci_h4p_restore_regs(struct hci_h4p_info *info);
> +void hci_h4p_smart_idle(struct hci_h4p_info *info, bool enable);
These are a lot of public functions. Are they all really needed or can
the code be done smart.
> +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 = dev_get_drvdata(dev);
Since none of these devices can function without having a valid
address, the way this should work is that we should not register the
HCI device when probing the platform device.
The HCI device should be registered once a valid address has been
written into the sysfs file. I do not want to play the tricks with
bringing up the device without a valid address.
> + hdev->close = hci_h4p_hci_close;
> + hdev->flush = hci_h4p_hci_flush;
> + hdev->send = hci_h4p_hci_send_frame;
It needs to use hdev->setup to load the firmware. I assume the
firmware only needs to be loaded once. That is exactly what
hdev->setup does. It gets executed once.
> + set_bit(HCI_QUIRK_RESET_ON_CLOSE, &hdev->quirks);
Is this quirk really needed? Normally only Bluetooth 1.1 and early
devices qualify for it.
> +static int hci_h4p_bcm_set_bdaddr(struct hci_h4p_info *info, struct sk_buff *skb)
> +{
> + int i;
> + static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
> + int not_valid;
Has this actually been confirmed that we can just randomly set an
address out of the Nokia range. I do not think so. This is a pretty
bad idea.
I have no interest in merging a driver with such a hack.
> + not_valid = 1;
> + for (i = 0; i < 6; i++) {
> + if (info->bd_addr[i] != 0x00) {
> + not_valid = 0;
> + break;
> + }
> + }
Anybody every heard of memcmp or bacmp and BDADDR_ANY?
> + if (not_valid) {
> + dev_info(info->dev, "Valid bluetooth address not found,"
> + " setting some random\n");
> + /* When address is not valid, use some random */
> + memcpy(info->bd_addr, nokia_oui, 3);
> + get_random_bytes(info->bd_addr + 3, 3);
> + }
And why does every single chip firmware does this differently. Seriously, this is a mess.
> +void hci_h4p_parse_fw_event(struct hci_h4p_info *info, struct sk_buff *skb)
> +{
> + switch (info->man_id) {
> + case H4P_ID_CSR:
> + hci_h4p_bc4_parse_fw_event(info, skb);
> + break;
...
> +}
We have proper HCI sync command handling in recent kernels. I really
do not know why this is hand coded these days. Check how the Intel
firmware loading inside btusb.c does it.
> +inline u8 hci_h4p_inb(struct hci_h4p_info *info, unsigned int offset)
> +{
> + return __raw_readb(info->uart_base + (offset << 2));
> +}
Inline in a *.c file for a non-static function. Makes no sense to me.
> +/**
> + * struct hci_h4p_platform data - hci_h4p Platform data structure
> + */
> +struct hci_h4p_platform_data {
please have a proper name here. For example
btnokia_h4p_platform_data.
Please send patches to Greg Kroah-Hartman <greg@kroah.com> and Cc:
Pavel Machek <pavel@ucw.cz>

228
drivers/staging/nokia_h4p/hci_h4p.h Normal file
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@ -0,0 +1,228 @@
/*
* This file is part of Nokia H4P bluetooth driver
*
* Copyright (C) 2005-2008 Nokia Corporation.
*
* 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
*
*/
#ifndef __DRIVERS_BLUETOOTH_HCI_H4P_H
#define __DRIVERS_BLUETOOTH_HCI_H4P_H
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
#include <net/bluetooth/hci.h>
#define FW_NAME_TI1271_PRELE "ti1273_prele.bin"
#define FW_NAME_TI1271_LE "ti1273_le.bin"
#define FW_NAME_TI1271 "ti1273.bin"
#define FW_NAME_BCM2048 "bcmfw.bin"
#define FW_NAME_CSR "bc4fw.bin"
#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
#define UART_OMAP_SYSC_IDLEMODE 0x03
#define UART_OMAP_SYSC_IDLEMASK (3 << UART_OMAP_SYSC_IDLEMODE)
#define UART_OMAP_SYSC_FORCE_IDLE (0 << UART_OMAP_SYSC_IDLEMODE)
#define UART_OMAP_SYSC_NO_IDLE (1 << UART_OMAP_SYSC_IDLEMODE)
#define UART_OMAP_SYSC_SMART_IDLE (2 << UART_OMAP_SYSC_IDLEMODE)
#define H4P_TRANSFER_MODE 1
#define H4P_SCHED_TRANSFER_MODE 2
#define H4P_ACTIVE_MODE 3
struct hci_h4p_info {
struct timer_list lazy_release;
struct hci_dev *hdev;
spinlock_t lock;
void __iomem *uart_base;
unsigned long uart_phys_base;
int irq;
struct device *dev;
u8 chip_type;
u8 bt_wakeup_gpio;
u8 host_wakeup_gpio;
u8 reset_gpio;
u8 reset_gpio_shared;
u8 bt_sysclk;
u8 man_id;
u8 ver_id;
struct sk_buff_head fw_queue;
struct sk_buff *alive_cmd_skb;
struct completion init_completion;
struct completion fw_completion;
struct completion test_completion;
int fw_error;
int init_error;
struct sk_buff_head txq;
struct sk_buff *rx_skb;
long rx_count;
unsigned long rx_state;
unsigned long garbage_bytes;
u8 bd_addr[6];
struct sk_buff_head *fw_q;
int pm_enabled;
int tx_enabled;
int autorts;
int rx_enabled;
unsigned long pm_flags;
int tx_clocks_en;
int rx_clocks_en;
spinlock_t clocks_lock;
struct clk *uart_iclk;
struct clk *uart_fclk;
atomic_t clk_users;
u16 dll;
u16 dlh;
u16 ier;
u16 mdr1;
u16 efr;
};
struct hci_h4p_radio_hdr {
__u8 evt;
__u8 dlen;
} __attribute__ ((packed));
struct hci_h4p_neg_hdr {
__u8 dlen;
} __attribute__ ((packed));
#define H4P_NEG_HDR_SIZE 1
#define H4P_NEG_REQ 0x00
#define H4P_NEG_ACK 0x20
#define H4P_NEG_NAK 0x40
#define H4P_PROTO_PKT 0x44
#define H4P_PROTO_BYTE 0x4c
#define H4P_ID_CSR 0x02
#define H4P_ID_BCM2048 0x04
#define H4P_ID_TI1271 0x31
struct hci_h4p_neg_cmd {
__u8 ack;
__u16 baud;
__u16 unused1;
__u8 proto;
__u16 sys_clk;
__u16 unused2;
} __attribute__ ((packed));
struct hci_h4p_neg_evt {
__u8 ack;
__u16 baud;
__u16 unused1;
__u8 proto;
__u16 sys_clk;
__u16 unused2;
__u8 man_id;
__u8 ver_id;
} __attribute__ ((packed));
#define H4P_ALIVE_REQ 0x55
#define H4P_ALIVE_RESP 0xcc
struct hci_h4p_alive_hdr {
__u8 dlen;
} __attribute__ ((packed));
#define H4P_ALIVE_HDR_SIZE 1
struct hci_h4p_alive_pkt {
__u8 mid;
__u8 unused;
} __attribute__ ((packed));
#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
#define H4_RADIO_HDR_SIZE 2
/* 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
#define H4_RADIO_PKT 0x08
/* 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));
int hci_h4p_send_alive_packet(struct hci_h4p_info *info);
void hci_h4p_bcm_parse_fw_event(struct hci_h4p_info *info,
struct sk_buff *skb);
int hci_h4p_bcm_send_fw(struct hci_h4p_info *info,
struct sk_buff_head *fw_queue);
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_ti1273_parse_fw_event(struct hci_h4p_info *info,
struct sk_buff *skb);
int hci_h4p_ti1273_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);
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);
void hci_h4p_init_uart(struct hci_h4p_info *info);
void hci_h4p_enable_tx(struct hci_h4p_info *info);
void hci_h4p_store_regs(struct hci_h4p_info *info);
void hci_h4p_restore_regs(struct hci_h4p_info *info);
void hci_h4p_smart_idle(struct hci_h4p_info *info, bool enable);
#endif /* __DRIVERS_BLUETOOTH_HCI_H4P_H */

1205
drivers/staging/nokia_h4p/nokia_core.c Normal file
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147
drivers/staging/nokia_h4p/nokia_fw-bcm.c Normal file
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@ -0,0 +1,147 @@
/*
* This file is part of Nokia H4P bluetooth driver
*
* Copyright (C) 2005-2008 Nokia Corporation.
*
* 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"
static int hci_h4p_bcm_set_bdaddr(struct hci_h4p_info *info, struct sk_buff *skb)
{
int i;
static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
int not_valid;
not_valid = 1;
for (i = 0; i < 6; i++) {
if (info->bd_addr[i] != 0x00) {
not_valid = 0;
break;
}
}
if (not_valid) {
dev_info(info->dev, "Valid bluetooth address not found, setting some random\n");
/* When address is not valid, use some random but Nokia MAC */
memcpy(info->bd_addr, nokia_oui, 3);
get_random_bytes(info->bd_addr + 3, 3);
}
for (i = 0; i < 6; i++)
skb->data[9 - i] = info->bd_addr[i];
return 0;
}
void hci_h4p_bcm_parse_fw_event(struct hci_h4p_info *info, struct sk_buff *skb)
{
struct sk_buff *fw_skb;
int err;
unsigned long flags;
if (skb->data[5] != 0x00) {
dev_err(info->dev, "Firmware sending command failed 0x%.2x\n",
skb->data[5]);
info->fw_error = -EPROTO;
}
kfree_skb(skb);
fw_skb = skb_dequeue(info->fw_q);
if (fw_skb == NULL || info->fw_error) {
complete(&info->fw_completion);
return;
}
if (fw_skb->data[1] == 0x01 && fw_skb->data[2] == 0xfc && fw_skb->len >= 10) {
BT_DBG("Setting bluetooth address");
err = hci_h4p_bcm_set_bdaddr(info, fw_skb);
if (err < 0) {
kfree_skb(fw_skb);
info->fw_error = err;
complete(&info->fw_completion);
return;
}
}
skb_queue_tail(&info->txq, fw_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);
}
int hci_h4p_bcm_send_fw(struct hci_h4p_info *info,
struct sk_buff_head *fw_queue)
{
struct sk_buff *skb;
unsigned long flags, time;
info->fw_error = 0;
BT_DBG("Sending firmware");
time = jiffies;
info->fw_q = fw_queue;
skb = skb_dequeue(fw_queue);
if (!skb)
return -ENODATA;
BT_DBG("Sending commands");
/*
* Disable smart-idle as UART TX interrupts
* are not wake-up capable
*/
hci_h4p_smart_idle(info, 0);
/* Check if this is bd_address packet */
init_completion(&info->fw_completion);
skb_queue_tail(&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);
if (!wait_for_completion_timeout(&info->fw_completion,
msecs_to_jiffies(2000))) {
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;
}
BT_DBG("Firmware sent in %d msecs",
jiffies_to_msecs(jiffies-time));
hci_h4p_set_auto_ctsrts(info, 0, UART_EFR_RTS);
hci_h4p_set_rts(info, 0);
hci_h4p_change_speed(info, BC4_MAX_BAUD_RATE);
hci_h4p_set_auto_ctsrts(info, 1, UART_EFR_RTS);
return 0;
}

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drivers/staging/nokia_h4p/nokia_fw-csr.c Normal file
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/*
* This file is part of Nokia H4P bluetooth driver
*
* Copyright (C) 2005-2008 Nokia Corporation.
*
* 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(info->hdev, 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)
{
static const u8 nokia_oui[3] = {0x00, 0x19, 0x4F};
struct sk_buff *skb;
unsigned int offset;
int retries, count, i, not_valid;
unsigned long flags;
info->fw_error = 0;
BT_DBG("Sending firmware");
skb = skb_dequeue(fw_queue);
if (!skb)
return -ENOMSG;
/* Check if this is bd_address packet */
if (skb->data[15] == 0x01 && skb->data[16] == 0x00) {
offset = 21;
skb->data[offset + 1] = 0x00;
skb->data[offset + 5] = 0x00;
not_valid = 1;
for (i = 0; i < 6; i++) {
if (info->bd_addr[i] != 0x00) {
not_valid = 0;
break;
}
}
if (not_valid) {
dev_info(info->dev, "Valid bluetooth address not found,"
" setting some random\n");
/* When address is not valid, use some random */
memcpy(info->bd_addr, nokia_oui, 3);
get_random_bytes(info->bd_addr + 3, 3);
}
skb->data[offset + 7] = info->bd_addr[0];
skb->data[offset + 6] = info->bd_addr[1];
skb->data[offset + 4] = info->bd_addr[2];
skb->data[offset + 0] = info->bd_addr[3];
skb->data[offset + 3] = info->bd_addr[4];
skb->data[offset + 2] = info->bd_addr[5];
}
for (count = 1; ; count++) {
BT_DBG("Sending firmware command %d", count);
init_completion(&info->fw_completion);
skb_queue_tail(&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);
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 deassert after final speed\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;
}

110
drivers/staging/nokia_h4p/nokia_fw-ti1273.c Normal file
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/*
* This file is part of Nokia H4P bluetooth driver
*
* Copyright (C) 2009 Nokia Corporation.
*
* 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"
static struct sk_buff_head *fw_q;
void hci_h4p_ti1273_parse_fw_event(struct hci_h4p_info *info,
struct sk_buff *skb)
{
struct sk_buff *fw_skb;
unsigned long flags;
if (skb->data[5] != 0x00) {
dev_err(info->dev, "Firmware sending command failed 0x%.2x\n",
skb->data[5]);
info->fw_error = -EPROTO;
}
kfree_skb(skb);
fw_skb = skb_dequeue(fw_q);
if (fw_skb == NULL || info->fw_error) {
complete(&info->fw_completion);
return;
}
skb_queue_tail(&info->txq, fw_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);
}
int hci_h4p_ti1273_send_fw(struct hci_h4p_info *info,
struct sk_buff_head *fw_queue)
{
struct sk_buff *skb;
unsigned long flags, time;
info->fw_error = 0;
BT_DBG("Sending firmware");
time = jiffies;
fw_q = fw_queue;
skb = skb_dequeue(fw_queue);
if (!skb)
return -ENODATA;
BT_DBG("Sending commands");
/* Check if this is bd_address packet */
init_completion(&info->fw_completion);
hci_h4p_smart_idle(info, 0);
skb_queue_tail(&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);
if (!wait_for_completion_timeout(&info->fw_completion,
msecs_to_jiffies(2000))) {
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;
}
BT_DBG("Firmware sent in %d msecs",
jiffies_to_msecs(jiffies-time));
hci_h4p_set_auto_ctsrts(info, 0, UART_EFR_RTS);
hci_h4p_set_rts(info, 0);
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;
}
hci_h4p_set_auto_ctsrts(info, 1, UART_EFR_RTS);
return 0;
}

195
drivers/staging/nokia_h4p/nokia_fw.c Normal file
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/*
* 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"
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;
BT_DBG("Opening firmware man_id 0x%.2x ver_id 0x%.2x",
info->man_id, info->ver_id);
switch (info->man_id) {
case H4P_ID_TI1271:
switch (info->ver_id) {
case 0xe1:
err = request_firmware(fw_entry, FW_NAME_TI1271_PRELE,
info->dev);
break;
case 0xd1:
case 0xf1:
err = request_firmware(fw_entry, FW_NAME_TI1271_LE,
info->dev);
break;
default:
err = request_firmware(fw_entry, FW_NAME_TI1271,
info->dev);
}
break;
case H4P_ID_CSR:
err = request_firmware(fw_entry, FW_NAME_CSR, info->dev);
break;
case H4P_ID_BCM2048:
err = request_firmware(fw_entry, FW_NAME_BCM2048, 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, gfp_t how)
{
unsigned int cmd_len;
if (fw_pos >= fw_entry->size)
return 0;
if (fw_pos + 2 > fw_entry->size) {
dev_err(info->dev, "Corrupted firmware image 1\n");
return -EMSGSIZE;
}
cmd_len = fw_entry->data[fw_pos++];
cmd_len += fw_entry->data[fw_pos++] << 8;
if (cmd_len == 0)
return 0;
if (fw_pos + cmd_len > fw_entry->size) {
dev_err(info->dev, "Corrupted firmware image 2\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);
}
/* Chip detection code does neg and alive stuff
* discard two first skbs */
skb = skb_dequeue(fw_queue);
if (!skb) {
err = -EMSGSIZE;
goto err_clean;
}
kfree_skb(skb);
skb = skb_dequeue(fw_queue);
if (!skb) {
err = -EMSGSIZE;
goto err_clean;
}
kfree_skb(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->man_id) {
case H4P_ID_CSR:
err = hci_h4p_bc4_send_fw(info, fw_queue);
break;
case H4P_ID_TI1271:
err = hci_h4p_ti1273_send_fw(info, fw_queue);
break;
case H4P_ID_BCM2048:
err = hci_h4p_bcm_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->man_id) {
case H4P_ID_CSR:
hci_h4p_bc4_parse_fw_event(info, skb);
break;
case H4P_ID_TI1271:
hci_h4p_ti1273_parse_fw_event(info, skb);
break;
case H4P_ID_BCM2048:
hci_h4p_bcm_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;
}

199
drivers/staging/nokia_h4p/nokia_uart.c Normal file
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/*
* This file is part of Nokia H4P bluetooth driver
*
* Copyright (C) 2005, 2006 Nokia Corporation.
*
* 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 <linux/io.h>
#include "hci_h4p.h"
inline void hci_h4p_outb(struct hci_h4p_info *info, unsigned int offset, u8 val)
{
__raw_writeb(val, info->uart_base + (offset << 2));
}
inline u8 hci_h4p_inb(struct hci_h4p_info *info, unsigned int offset)
{
return __raw_readb(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)
{
unsigned long timeout;
int state;
timeout = jiffies + msecs_to_jiffies(timeout_ms);
for (;;) {
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;
msleep(1);
}
}
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;
BT_DBG("Setting speed %lu", speed);
if (speed >= 460800) {
divisor = UART_CLOCK / 13 / speed;
mdr1 = 3;
} else {
divisor = UART_CLOCK / 16 / speed;
mdr1 = 0;
}
/* Make sure UART mode is disabled */
hci_h4p_outb(info, UART_OMAP_MDR1, 7);
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);
/* Make sure UART mode is enabled */
hci_h4p_outb(info, UART_OMAP_MDR1, mdr1);
}
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++ > 100) {
dev_err(info->dev, "hci_h4p: UART reset timeout\n");
return -ENODEV;
}
udelay(1);
}
return 0;
}
void hci_h4p_store_regs(struct hci_h4p_info *info)
{
u16 lcr = 0;
lcr = hci_h4p_inb(info, UART_LCR);
hci_h4p_outb(info, UART_LCR, 0xBF);
info->dll = hci_h4p_inb(info, UART_DLL);
info->dlh = hci_h4p_inb(info, UART_DLM);
info->efr = hci_h4p_inb(info, UART_EFR);
hci_h4p_outb(info, UART_LCR, lcr);
info->mdr1 = hci_h4p_inb(info, UART_OMAP_MDR1);
info->ier = hci_h4p_inb(info, UART_IER);
}
void hci_h4p_restore_regs(struct hci_h4p_info *info)
{
u16 lcr = 0;
hci_h4p_init_uart(info);
hci_h4p_outb(info, UART_OMAP_MDR1, 7);
lcr = hci_h4p_inb(info, UART_LCR);
hci_h4p_outb(info, UART_LCR, 0xBF);
hci_h4p_outb(info, UART_DLL, info->dll); /* Set speed */
hci_h4p_outb(info, UART_DLM, info->dlh);
hci_h4p_outb(info, UART_EFR, info->efr);
hci_h4p_outb(info, UART_LCR, lcr);
hci_h4p_outb(info, UART_OMAP_MDR1, info->mdr1);
hci_h4p_outb(info, UART_IER, info->ier);
}
void hci_h4p_init_uart(struct hci_h4p_info *info)
{
u8 mcr, efr;
/* Enable and setup FIFO */
hci_h4p_outb(info, UART_OMAP_MDR1, 0x00);
hci_h4p_outb(info, UART_LCR, 0xbf);
efr = hci_h4p_inb(info, UART_EFR);
hci_h4p_outb(info, UART_EFR, UART_EFR_ECB);
hci_h4p_outb(info, UART_LCR, UART_LCR_DLAB);
mcr = hci_h4p_inb(info, UART_MCR);
hci_h4p_outb(info, UART_MCR, UART_MCR_TCRTLR);
hci_h4p_outb(info, UART_FCR, UART_FCR_ENABLE_FIFO |
UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT |
(3 << 6) | (0 << 4));
hci_h4p_outb(info, UART_LCR, 0xbf);
hci_h4p_outb(info, UART_TI752_TLR, 0xed);
hci_h4p_outb(info, UART_TI752_TCR, 0xef);
hci_h4p_outb(info, UART_EFR, efr);
hci_h4p_outb(info, UART_LCR, UART_LCR_DLAB);
hci_h4p_outb(info, UART_MCR, 0x00);
hci_h4p_outb(info, UART_LCR, UART_LCR_WLEN8);
hci_h4p_outb(info, UART_IER, UART_IER_RDI);
hci_h4p_outb(info, UART_OMAP_SYSC, (1 << 0) | (1 << 2) | (2 << 3));
}

38
include/linux/platform_data/bt-nokia-h4p.h Normal file
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/*
* This file is part of Nokia H4P bluetooth driver
*
* Copyright (C) 2010 Nokia Corporation.
*
* 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
*
*/
/**
* struct hci_h4p_platform data - hci_h4p Platform data structure
*/
struct hci_h4p_platform_data {
int chip_type;
int bt_sysclk;
unsigned int bt_wakeup_gpio;
unsigned int host_wakeup_gpio;
unsigned int reset_gpio;
int reset_gpio_shared;
unsigned int uart_irq;
phys_addr_t uart_base;
const char *uart_iclk;
const char *uart_fclk;
void (*set_pm_limits)(struct device *dev, bool set);
};