1 files changed, 0 insertions, 224 deletions
diff --git a/ANDROID_3.4.5/sound/firewire/fcp.c b/ANDROID_3.4.5/sound/firewire/fcp.c
deleted file mode 100644
index ec578b5a..00000000
--- a/ANDROID_3.4.5/sound/firewire/fcp.c
+++ /dev/null
@@ -1,224 +0,0 @@
-/*
- * Function Control Protocol (IEC 61883-1) helper functions
- *
- * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
- * Licensed under the terms of the GNU General Public License, version 2.
- */
-
-#include <linux/device.h>
-#include <linux/firewire.h>
-#include <linux/firewire-constants.h>
-#include <linux/list.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/spinlock.h>
-#include <linux/wait.h>
-#include <linux/delay.h>
-#include "fcp.h"
-#include "lib.h"
-
-#define CTS_AVC 0x00
-
-#define ERROR_RETRIES	3
-#define ERROR_DELAY_MS	5
-#define FCP_TIMEOUT_MS	125
-
-static DEFINE_SPINLOCK(transactions_lock);
-static LIST_HEAD(transactions);
-
-enum fcp_state {
-	STATE_PENDING,
-	STATE_BUS_RESET,
-	STATE_COMPLETE,
-};
-
-struct fcp_transaction {
-	struct list_head list;
-	struct fw_unit *unit;
-	void *response_buffer;
-	unsigned int response_size;
-	unsigned int response_match_bytes;
-	enum fcp_state state;
-	wait_queue_head_t wait;
-};
-
-/**
- * fcp_avc_transaction - send an AV/C command and wait for its response
- * @unit: a unit on the target device
- * @command: a buffer containing the command frame; must be DMA-able
- * @command_size: the size of @command
- * @response: a buffer for the response frame
- * @response_size: the maximum size of @response
- * @response_match_bytes: a bitmap specifying the bytes used to detect the
- *                        correct response frame
- *
- * This function sends a FCP command frame to the target and waits for the
- * corresponding response frame to be returned.
- *
- * Because it is possible for multiple FCP transactions to be active at the
- * same time, the correct response frame is detected by the value of certain
- * bytes.  These bytes must be set in @response before calling this function,
- * and the corresponding bits must be set in @response_match_bytes.
- *
- * @command and @response can point to the same buffer.
- *
- * Asynchronous operation (INTERIM, NOTIFY) is not supported at the moment.
- *
- * Returns the actual size of the response frame, or a negative error code.
- */
-int fcp_avc_transaction(struct fw_unit *unit,
-			const void *command, unsigned int command_size,
-			void *response, unsigned int response_size,
-			unsigned int response_match_bytes)
-{
-	struct fcp_transaction t;
-	int tcode, ret, tries = 0;
-
-	t.unit = unit;
-	t.response_buffer = response;
-	t.response_size = response_size;
-	t.response_match_bytes = response_match_bytes;
-	t.state = STATE_PENDING;
-	init_waitqueue_head(&t.wait);
-
-	spin_lock_irq(&transactions_lock);
-	list_add_tail(&t.list, &transactions);
-	spin_unlock_irq(&transactions_lock);
-
-	for (;;) {
-		tcode = command_size == 4 ? TCODE_WRITE_QUADLET_REQUEST
-					  : TCODE_WRITE_BLOCK_REQUEST;
-		ret = snd_fw_transaction(t.unit, tcode,
-					 CSR_REGISTER_BASE + CSR_FCP_COMMAND,
-					 (void *)command, command_size);
-		if (ret < 0)
-			break;
-
-		wait_event_timeout(t.wait, t.state != STATE_PENDING,
-				   msecs_to_jiffies(FCP_TIMEOUT_MS));
-
-		if (t.state == STATE_COMPLETE) {
-			ret = t.response_size;
-			break;
-		} else if (t.state == STATE_BUS_RESET) {
-			msleep(ERROR_DELAY_MS);
-		} else if (++tries >= ERROR_RETRIES) {
-			dev_err(&t.unit->device, "FCP command timed out\n");
-			ret = -EIO;
-			break;
-		}
-	}
-
-	spin_lock_irq(&transactions_lock);
-	list_del(&t.list);
-	spin_unlock_irq(&transactions_lock);
-
-	return ret;
-}
-EXPORT_SYMBOL(fcp_avc_transaction);
-
-/**
- * fcp_bus_reset - inform the target handler about a bus reset
- * @unit: the unit that might be used by fcp_avc_transaction()
- *
- * This function must be called from the driver's .update handler to inform
- * the FCP transaction handler that a bus reset has happened.  Any pending FCP
- * transactions are retried.
- */
-void fcp_bus_reset(struct fw_unit *unit)
-{
-	struct fcp_transaction *t;
-
-	spin_lock_irq(&transactions_lock);
-	list_for_each_entry(t, &transactions, list) {
-		if (t->unit == unit &&
-		    t->state == STATE_PENDING) {
-			t->state = STATE_BUS_RESET;
-			wake_up(&t->wait);
-		}
-	}
-	spin_unlock_irq(&transactions_lock);
-}
-EXPORT_SYMBOL(fcp_bus_reset);
-
-/* checks whether the response matches the masked bytes in response_buffer */
-static bool is_matching_response(struct fcp_transaction *transaction,
-				 const void *response, size_t length)
-{
-	const u8 *p1, *p2;
-	unsigned int mask, i;
-
-	p1 = response;
-	p2 = transaction->response_buffer;
-	mask = transaction->response_match_bytes;
-
-	for (i = 0; ; ++i) {
-		if ((mask & 1) && p1[i] != p2[i])
-			return false;
-		mask >>= 1;
-		if (!mask)
-			return true;
-		if (--length == 0)
-			return false;
-	}
-}
-
-static void fcp_response(struct fw_card *card, struct fw_request *request,
-			 int tcode, int destination, int source,
-			 int generation, unsigned long long offset,
-			 void *data, size_t length, void *callback_data)
-{
-	struct fcp_transaction *t;
-	unsigned long flags;
-
-	if (length < 1 || (*(const u8 *)data & 0xf0) != CTS_AVC)
-		return;
-
-	spin_lock_irqsave(&transactions_lock, flags);
-	list_for_each_entry(t, &transactions, list) {
-		struct fw_device *device = fw_parent_device(t->unit);
-		if (device->card != card ||
-		    device->generation != generation)
-			continue;
-		smp_rmb(); /* node_id vs. generation */
-		if (device->node_id != source)
-			continue;
-
-		if (t->state == STATE_PENDING &&
-		    is_matching_response(t, data, length)) {
-			t->state = STATE_COMPLETE;
-			t->response_size = min((unsigned int)length,
-					       t->response_size);
-			memcpy(t->response_buffer, data, t->response_size);
-			wake_up(&t->wait);
-		}
-	}
-	spin_unlock_irqrestore(&transactions_lock, flags);
-}
-
-static struct fw_address_handler response_register_handler = {
-	.length = 0x200,
-	.address_callback = fcp_response,
-};
-
-static int __init fcp_module_init(void)
-{
-	static const struct fw_address_region response_register_region = {
-		.start = CSR_REGISTER_BASE + CSR_FCP_RESPONSE,
-		.end = CSR_REGISTER_BASE + CSR_FCP_END,
-	};
-
-	fw_core_add_address_handler(&response_register_handler,
-				    &response_register_region);
-
-	return 0;
-}
-
-static void __exit fcp_module_exit(void)
-{
-	WARN_ON(!list_empty(&transactions));
-	fw_core_remove_address_handler(&response_register_handler);
-}
-
-module_init(fcp_module_init);
-module_exit(fcp_module_exit);