staging: remove nokia_hp4p driver

The Bluetooth maintainer has been complaining about it for a while, and
I shouldn't have merged it over his objections.  There also has been no
real work done on it at all to get it out of the staging tree, so just
delete the code for now.

If someone wants to get this fixed up properly, feel free to revert this
commit and send the revert, along with cleanups and we will be glad to
consider it.

Cc: Marcel Holtmann <marcel@holtmann.org>
Cc: Pali Rohár <pali.rohar@gmail.com>
Cc: Pavel Machek <pavel@ucw.cz>,
Cc: Miguel Oliveira <cmroliv@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/Kconfig

@@ -114,8 +114,6 @@ source "drivers/staging/dgap/Kconfig"
 
 source "drivers/staging/gs_fpgaboot/Kconfig"
 
-source "drivers/staging/nokia_h4p/Kconfig"
-
 source "drivers/staging/skein/Kconfig"
 
 source "drivers/staging/unisys/Kconfig"

drivers/staging/Makefile

@@ -49,6 +49,5 @@ obj-$(CONFIG_DGNC)			+= dgnc/
 obj-$(CONFIG_DGAP)			+= dgap/
 obj-$(CONFIG_MTD_SPINAND_MT29F)	+= mt29f_spinand/
 obj-$(CONFIG_GS_FPGABOOT)	+= gs_fpgaboot/
-obj-$(CONFIG_BT_NOKIA_H4P)	+= nokia_h4p/
 obj-$(CONFIG_CRYPTO_SKEIN)	+= skein/
 obj-$(CONFIG_UNISYSSPAR)	+= unisys/

drivers/staging/nokia_h4p/Kconfig

-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).

drivers/staging/nokia_h4p/Makefile

-
-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__

drivers/staging/nokia_h4p/TODO

-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.
-
-> +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>

drivers/staging/nokia_h4p/hci_h4p.h

-/*
- * 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 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;
-} __packed;
-
-struct hci_h4p_neg_hdr {
-	__u8 dlen;
-} __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;
-} __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;
-} __packed;
-
-#define H4P_ALIVE_REQ	0x55
-#define H4P_ALIVE_RESP	0xcc
-
-struct hci_h4p_alive_hdr {
-	__u8	dlen;
-} __packed;
-#define H4P_ALIVE_HDR_SIZE 1
-
-struct hci_h4p_alive_pkt {
-	__u8	mid;
-	__u8	unused;
-} __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;
-} __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 */

drivers/staging/nokia_h4p/nokia_fw-bcm.c

-/*
- * 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;
-}

drivers/staging/nokia_h4p/nokia_fw-csr.c

-/*
- * 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;
-}

drivers/staging/nokia_h4p/nokia_fw-ti1273.c

-/*
- * 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;
-}

drivers/staging/nokia_h4p/nokia_fw.c

-/*
- * 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/skbuff.h>
-#include <linux/firmware.h>
-#include <linux/clk.h>
-
-#include <net/bluetooth/bluetooth.h>
-
-#include "hci_h4p.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"
-
-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;
-	}
-}
-
-MODULE_FIRMWARE(FW_NAME_TI1271_PRELE);
-MODULE_FIRMWARE(FW_NAME_TI1271_LE);
-MODULE_FIRMWARE(FW_NAME_TI1271);
-MODULE_FIRMWARE(FW_NAME_BCM2048);
-MODULE_FIRMWARE(FW_NAME_CSR);

drivers/staging/nokia_h4p/nokia_uart.c

-/*
- * 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));
-}