change prefix for kernelpatchbase 2.6.26

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13619 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 606 insertions, 0 deletions

diff --git a/target/linux/s3c24xx/patches-2.6.26/1048-fiq-hdq.patch.patch b/target/linux/s3c24xx/patches-2.6.26/1048-fiq-hdq.patch.patch
new file mode 100755
index 0000000000..b8189a1edc
--- /dev/null
+++ b/target/linux/s3c24xx/patches-2.6.26/1048-fiq-hdq.patch.patch
@@ -0,0 +1,606 @@
+From d183fa083737f2b042ecf92166951c30fd83fe61 Mon Sep 17 00:00:00 2001
+From: mokopatches <mokopatches@openmoko.org>
+Date: Fri, 25 Jul 2008 22:21:23 +0100
+Subject: [PATCH] fiq-hdq.patch
+
+---
+ arch/arm/mach-s3c2440/mach-gta02.c           |  204 +++++++++++++++++++++-
+ drivers/power/Kconfig                        |    8 +
+ drivers/power/Makefile                       |    2 +
+ drivers/power/gta02_hdq.c                    |  250 ++++++++++++++++++++++++++
+ include/asm-arm/arch-s3c2410/fiq_ipc_gta02.h |   23 +++
+ include/asm-arm/arch-s3c2410/gta02.h         |    1 +
+ include/linux/gta02_hdq.h                    |    8 +
+ 7 files changed, 495 insertions(+), 1 deletions(-)
+ create mode 100644 drivers/power/gta02_hdq.c
+ create mode 100644 include/linux/gta02_hdq.h
+
+diff --git a/arch/arm/mach-s3c2440/mach-gta02.c b/arch/arm/mach-s3c2440/mach-gta02.c
+index 8c7bbe7..cea76e7 100644
+--- a/arch/arm/mach-s3c2440/mach-gta02.c
++++ b/arch/arm/mach-s3c2440/mach-gta02.c
+@@ -99,6 +99,19 @@ EXPORT_SYMBOL(fiq_ipc);
+ 
+ #define FIQ_DIVISOR_VIBRATOR DIVISOR_FROM_US(100)
+ 
++#ifdef CONFIG_GTA02_HDQ
++/* HDQ specific */
++#define HDQ_SAMPLE_PERIOD_US 20
++/* private HDQ FSM state -- all other info interesting for caller in fiq_ipc */
++static enum hdq_bitbang_states hdq_state;
++static u8 hdq_ctr;
++static u8 hdq_ctr2;
++static u8 hdq_bit;
++static u8 hdq_shifter;
++static u8 hdq_tx_data_done;
++
++#define FIQ_DIVISOR_HDQ DIVISOR_FROM_US(HDQ_SAMPLE_PERIOD_US)
++#endif
+ /* define FIQ ISR */
+ 
+ FIQ_HANDLER_START()
+@@ -121,9 +134,171 @@ FIQ_HANDLER_ENTRY(256, 512)
+ 		divisor = FIQ_DIVISOR_VIBRATOR;
+ 	}
+ 
+-	/* TODO: HDQ servicing */
++#ifdef CONFIG_GTA02_HDQ
++	/* HDQ servicing */
++
++	switch (hdq_state) {
++	case HDQB_IDLE:
++		if (fiq_ipc.hdq_request_ctr == fiq_ipc.hdq_transaction_ctr)
++			break;
++		hdq_ctr = 210 / HDQ_SAMPLE_PERIOD_US;
++		s3c2410_gpio_setpin(fiq_ipc.hdq_gpio_pin, 0);
++		s3c2410_gpio_cfgpin(fiq_ipc.hdq_gpio_pin, S3C2410_GPIO_OUTPUT);
++		hdq_tx_data_done = 0;
++		hdq_state = HDQB_TX_BREAK;
++		break;
++
++	case HDQB_TX_BREAK: /* issue low for > 190us */
++		if (--hdq_ctr == 0) {
++			hdq_ctr = 60 / HDQ_SAMPLE_PERIOD_US;
++			hdq_state = HDQB_TX_BREAK_RECOVERY;
++			s3c2410_gpio_setpin(fiq_ipc.hdq_gpio_pin, 1);
++		}
++		break;
++
++	case HDQB_TX_BREAK_RECOVERY: /* issue low for > 40us */
++		if (--hdq_ctr)
++			break;
++		hdq_shifter = fiq_ipc.hdq_ads;
++		hdq_bit = 8; /* 8 bits of ads / rw */
++		hdq_tx_data_done = 0; /* doing ads */
++		/* fallthru on last one */
++	case HDQB_ADS_CALC:
++		if (hdq_shifter & 1)
++			hdq_ctr = 50 / HDQ_SAMPLE_PERIOD_US;
++		else
++			hdq_ctr = 120 / HDQ_SAMPLE_PERIOD_US;
++		/* carefully precompute the other phase length */
++		hdq_ctr2 = (210 - (hdq_ctr * HDQ_SAMPLE_PERIOD_US)) /
++				HDQ_SAMPLE_PERIOD_US;
++		hdq_state = HDQB_ADS_LOW;
++		hdq_shifter >>= 1;
++		hdq_bit--;
++		s3c2410_gpio_setpin(fiq_ipc.hdq_gpio_pin, 0);
++		break;
++
++	case HDQB_ADS_LOW:
++		if (--hdq_ctr)
++			break;
++		s3c2410_gpio_setpin(fiq_ipc.hdq_gpio_pin, 1);
++		hdq_state = HDQB_ADS_HIGH;
++		break;
++
++	case HDQB_ADS_HIGH:
++		if (--hdq_ctr2 > 1) /* account for HDQB_ADS_CALC */
++			break;
++		if (hdq_bit) { /* more bits to do */
++			hdq_state = HDQB_ADS_CALC;
++			break;
++		}
++		/* no more bits, wait it out until hdq_ctr2 exhausted */
++		if (hdq_ctr2)
++			break;
++		/* ok no more bits and very last state */
++		hdq_ctr = 60 / HDQ_SAMPLE_PERIOD_US;
++		/* FIXME 0 = read */
++		if (fiq_ipc.hdq_ads & 0x80) { /* write the byte out */
++			 /* set delay before payload */
++			hdq_ctr = 300 / HDQ_SAMPLE_PERIOD_US;
++ 			/* already high, no need to write */
++			hdq_state = HDQB_WAIT_TX;
++			break;
++		}
++		/* read the next byte */
++		hdq_bit = 8; /* 8 bits of data */
++		hdq_ctr = 3000 / HDQ_SAMPLE_PERIOD_US;
++		hdq_state = HDQB_WAIT_RX;
++		s3c2410_gpio_cfgpin(fiq_ipc.hdq_gpio_pin, S3C2410_GPIO_INPUT);
++		break;
++
++	case HDQB_WAIT_TX: /* issue low for > 40us */
++		if (--hdq_ctr)
++			break;
++		if (!hdq_tx_data_done) { /* was that the data sent? */
++			hdq_tx_data_done++;
++			hdq_shifter = fiq_ipc.hdq_tx_data;
++			hdq_bit = 8; /* 8 bits of data */
++			hdq_state = HDQB_ADS_CALC; /* start sending */
++			break;
++		}
++		fiq_ipc.hdq_error = 0;
++		fiq_ipc.hdq_transaction_ctr++;
++		hdq_state = HDQB_IDLE; /* all tx is done */
++		/* idle in input mode, it's pulled up by 10K */
++		s3c2410_gpio_cfgpin(fiq_ipc.hdq_gpio_pin, S3C2410_GPIO_INPUT);
++		break;
++
++	case HDQB_WAIT_RX: /* wait for battery to talk to us */
++		if (s3c2410_gpio_getpin(fiq_ipc.hdq_gpio_pin) == 0) {
++			/* it talks to us! */
++			hdq_ctr2 = 1;
++			hdq_bit = 8; /* 8 bits of data */
++			/* timeout */
++			hdq_ctr = 300 / HDQ_SAMPLE_PERIOD_US;
++			hdq_state = HDQB_DATA_RX_LOW;
++			break;
++		}
++		if (--hdq_ctr == 0) { /* timed out, error */
++			fiq_ipc.hdq_error = 1;
++			fiq_ipc.hdq_transaction_ctr++;
++			hdq_state = HDQB_IDLE; /* abort */
++		}
++		break;
++
++	/*
++	 * HDQ basically works by measuring the low time of the bit cell
++	 * 32-50us --> '1', 80 - 145us --> '0'
++	 */
++
++	case HDQB_DATA_RX_LOW:
++		if (s3c2410_gpio_getpin(fiq_ipc.hdq_gpio_pin)) {
++			fiq_ipc.hdq_rx_data >>= 1;
++			if (hdq_ctr2 <= (65 / HDQ_SAMPLE_PERIOD_US))
++				fiq_ipc.hdq_rx_data |= 0x80;
++
++			if (--hdq_bit == 0) {
++				fiq_ipc.hdq_error = 0;
++				fiq_ipc.hdq_transaction_ctr++; /* done */
++				hdq_state = HDQB_IDLE;
++			} else
++				hdq_state = HDQB_DATA_RX_HIGH;
++			/* timeout */
++			hdq_ctr = 1000 / HDQ_SAMPLE_PERIOD_US;
++			hdq_ctr2 = 1;
++			break;
++		}
++		hdq_ctr2++;
++		if (--hdq_ctr)
++			break;
++		 /* timed out, error */
++		fiq_ipc.hdq_error = 2;
++		fiq_ipc.hdq_transaction_ctr++;
++		hdq_state = HDQB_IDLE; /* abort */
++		break;
+ 
++	case HDQB_DATA_RX_HIGH:
++		if (!s3c2410_gpio_getpin(fiq_ipc.hdq_gpio_pin)) {
++			/* it talks to us! */
++			hdq_ctr2 = 1;
++			/* timeout */
++			hdq_ctr = 400 / HDQ_SAMPLE_PERIOD_US;
++			hdq_state = HDQB_DATA_RX_LOW;
++			break;
++		}
++		if (--hdq_ctr)
++			break;
++		/* timed out, error */
++		fiq_ipc.hdq_error = 3;
++		fiq_ipc.hdq_transaction_ctr++;
++		/* we're in input mode already */
++		hdq_state = HDQB_IDLE; /* abort */
++		break;
++	}
+ 
++	if (hdq_state != HDQB_IDLE) /* ie, not idle */
++		if (divisor > FIQ_DIVISOR_HDQ)
++			divisor = FIQ_DIVISOR_HDQ; /* keep us going */
++#endif
+ 
+ 	/* disable further timer interrupts if nobody has any work
+ 	 * or adjust rate according to who still has work
+@@ -391,6 +566,23 @@ struct platform_device sc32440_fiq_device = {
+ 	.resource	= sc32440_fiq_resources,
+ };
+ 
++#ifdef CONFIG_GTA02_HDQ
++/* HDQ */
++
++static struct resource gta02_hdq_resources[] = {
++	[0] = {
++		.start	= GTA02v5_GPIO_HDQ,
++		.end	= GTA02v5_GPIO_HDQ,
++	},
++};
++
++struct platform_device gta02_hdq_device = {
++	.name 		= "gta02-hdq",
++	.num_resources	= 1,
++	.resource	= gta02_hdq_resources,
++};
++#endif
++
+ /* NOR Flash */
+ 
+ #define GTA02_FLASH_BASE	0x18000000 /* GCS3 */
+@@ -1074,6 +1266,16 @@ static void __init gta02_machine_init(void)
+ 
+ 	platform_add_devices(gta02_devices, ARRAY_SIZE(gta02_devices));
+ 
++#ifdef CONFIG_GTA02_HDQ
++	switch (system_rev) {
++	case GTA02v5_SYSTEM_REV:
++	case GTA02v6_SYSTEM_REV:
++		platform_device_register(&gta02_hdq_device);
++		break;
++	default:
++		break;
++	}
++#endif
+ 	s3c2410_pm_init();
+ 
+ 	/* Set LCD_RESET / XRES to high */
+diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
+index 58c806e..0a4515d 100644
+--- a/drivers/power/Kconfig
++++ b/drivers/power/Kconfig
+@@ -50,3 +50,11 @@ config BATTERY_OLPC
+ 	  Say Y to enable support for the battery on the OLPC laptop.
+ 
+ endif # POWER_SUPPLY
++
++config GTA02_HDQ
++	tristate "Neo Freerunner HDQ"
++	depends on MACH_NEO1973_GTA02 && FIQ && S3C2440_C_FIQ
++	help
++	  Say Y to enable support for communicating with an HDQ battery
++	  on the Neo Freerunner.  You probably want to select
++	  at least BATTERY_BQ27000_HDQ as well
+diff --git a/drivers/power/Makefile b/drivers/power/Makefile
+index 6413ded..88f227f 100644
+--- a/drivers/power/Makefile
++++ b/drivers/power/Makefile
+@@ -20,3 +20,5 @@ obj-$(CONFIG_APM_POWER)		+= apm_power.o
+ obj-$(CONFIG_BATTERY_DS2760)	+= ds2760_battery.o
+ obj-$(CONFIG_BATTERY_PMU)	+= pmu_battery.o
+ obj-$(CONFIG_BATTERY_OLPC)	+= olpc_battery.o
++
++obj-$(CONFIG_GTA02_HDQ)		+= gta02_hdq.o
+diff --git a/drivers/power/gta02_hdq.c b/drivers/power/gta02_hdq.c
+new file mode 100644
+index 0000000..12c742e
+--- /dev/null
++++ b/drivers/power/gta02_hdq.c
+@@ -0,0 +1,250 @@
++/*
++ * HDQ driver for the FIC Neo1973 GTA02 GSM phone
++ *
++ * (C) 2006-2007 by OpenMoko, Inc.
++ * Author: Andy Green <andy@openmoko.com>
++ * All rights reserved.
++ *
++ * 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.
++ *
++ */
++
++#include <linux/kernel.h>
++#include <linux/init.h>
++#include <linux/delay.h>
++#include <linux/platform_device.h>
++#include <asm/hardware.h>
++#include <asm/mach-types.h>
++#include <asm/arch/gta02.h>
++#include <asm/arch/fiq_ipc_gta02.h>
++
++
++
++#define HDQ_READ 0
++#define HDQ_WRITE 0x80
++
++
++int gta02hdq_initialized(void)
++{
++	return fiq_ipc.hdq_probed;
++}
++EXPORT_SYMBOL_GPL(gta02hdq_initialized);
++
++int gta02hdq_read(int address)
++{
++	int count_sleeps = 5;
++	int ret = -ETIME;
++
++	mutex_lock(&fiq_ipc.hdq_lock);
++
++	fiq_ipc.hdq_ads = address | HDQ_READ;
++	fiq_ipc.hdq_request_ctr++;
++	fiq_kick();
++	/*
++	 * FIQ takes care of it while we block our calling process
++	 * But we're not spinning -- other processes run normally while
++	 * we wait for the result
++	 */
++	while (count_sleeps--) {
++		msleep(10); /* valid transaction always completes in < 10ms */
++
++		if (fiq_ipc.hdq_request_ctr != fiq_ipc.hdq_transaction_ctr)
++			continue;
++
++		if (fiq_ipc.hdq_error)
++			goto done; /* didn't see a response in good time */
++
++		ret = fiq_ipc.hdq_rx_data;
++		goto done;
++	}
++	ret = -EINVAL;
++
++done:
++	mutex_unlock(&fiq_ipc.hdq_lock);
++	return ret;
++}
++EXPORT_SYMBOL_GPL(gta02hdq_read);
++
++int gta02hdq_write(int address, u8 data)
++{
++	int count_sleeps = 5;
++	int ret = -ETIME;
++
++	mutex_lock(&fiq_ipc.hdq_lock);
++
++	fiq_ipc.hdq_ads = address | HDQ_WRITE;
++	fiq_ipc.hdq_tx_data = data;
++	fiq_ipc.hdq_request_ctr++;
++	fiq_kick();
++	/*
++	 * FIQ takes care of it while we block our calling process
++	 * But we're not spinning -- other processes run normally while
++	 * we wait for the result
++	 */
++	while (count_sleeps--) {
++		msleep(10); /* valid transaction always completes in < 10ms */
++
++		if (fiq_ipc.hdq_request_ctr != fiq_ipc.hdq_transaction_ctr)
++			continue; /* something bad with FIQ */
++
++		if (fiq_ipc.hdq_error)
++			goto done; /* didn't see a response in good time */
++	}
++	ret = -EINVAL;
++
++done:
++	mutex_unlock(&fiq_ipc.hdq_lock);
++	return ret;
++}
++EXPORT_SYMBOL_GPL(gta02hdq_write);
++
++/* sysfs */
++
++static ssize_t hdq_sysfs_dump(struct device *dev, struct device_attribute *attr,
++			 char *buf)
++{
++	int n;
++	int v;
++	u8 u8a[128]; /* whole address space for HDQ */
++	char *end = buf;
++
++	/* the dump does not take care about 16 bit regs, because at this
++	 * bus level we don't know about the chip details
++	 */
++	for (n = 0; n < sizeof(u8a); n++) {
++		v = gta02hdq_read(n);
++		if (v < 0)
++			goto bail;
++		u8a[n] = v;
++	}
++
++	for (n = 0; n < sizeof(u8a); n += 16) {
++		hex_dump_to_buffer(u8a + n, sizeof(u8a), 16, 1, end, 4096, 0);
++		end += strlen(end);
++		*end++ = '\n';
++		*end = '\0';
++	}
++	return (end - buf);
++
++bail:
++	return sprintf(buf, "ERROR %d\n", v);
++}
++
++/* you write by <address> <data>, eg, "34 128" */
++
++#define atoi(str) simple_strtoul(((str != NULL) ? str : ""), NULL, 0)
++
++static ssize_t hdq_sysfs_write(struct device *dev,
++			       struct device_attribute *attr,
++			       const char *buf, size_t count)
++{
++	const char *end = buf + count;
++	int address = atoi(buf);
++
++	while ((buf != end) && (*buf != ' '))
++		buf++;
++	if (buf >= end)
++		return 0;
++	while ((buf < end) && (*buf == ' '))
++		buf++;
++	if (buf >= end)
++		return 0;
++
++	gta02hdq_write(address, atoi(buf));
++
++	return count;
++}
++
++static DEVICE_ATTR(dump, 0400, hdq_sysfs_dump, NULL);
++static DEVICE_ATTR(write, 0600, NULL, hdq_sysfs_write);
++
++static struct attribute *gta02hdq_sysfs_entries[] = {
++	&dev_attr_dump.attr,
++	&dev_attr_write.attr,
++	NULL
++};
++
++static struct attribute_group gta02hdq_attr_group = {
++	.name	= "hdq",
++	.attrs	= gta02hdq_sysfs_entries,
++};
++
++
++#ifdef CONFIG_PM
++static int gta02hdq_suspend(struct platform_device *pdev, pm_message_t state)
++{
++	/* after 18s of this, the battery monitor will also go to sleep */
++	s3c2410_gpio_setpin(fiq_ipc.hdq_gpio_pin, 0);
++	s3c2410_gpio_cfgpin(fiq_ipc.hdq_gpio_pin, S3C2410_GPIO_OUTPUT);
++	return 0;
++}
++
++static int gta02hdq_resume(struct platform_device *pdev)
++{
++	s3c2410_gpio_setpin(fiq_ipc.hdq_gpio_pin, 1);
++	s3c2410_gpio_cfgpin(fiq_ipc.hdq_gpio_pin, S3C2410_GPIO_OUTPUT);
++	return 0;
++}
++#endif
++
++static int __init gta02hdq_probe(struct platform_device *pdev)
++{
++	struct resource *r = platform_get_resource(pdev, 0, 0);
++
++	if (!machine_is_neo1973_gta02())
++		return -EIO;
++
++	if (!r)
++		return -EINVAL;
++
++	platform_set_drvdata(pdev, NULL);
++
++	mutex_init(&fiq_ipc.hdq_lock);
++
++	/* set our HDQ comms pin from the platform data */
++	fiq_ipc.hdq_gpio_pin = r->start;
++
++	s3c2410_gpio_setpin(fiq_ipc.hdq_gpio_pin, 1);
++	s3c2410_gpio_cfgpin(fiq_ipc.hdq_gpio_pin, S3C2410_GPIO_OUTPUT);
++
++	fiq_ipc.hdq_probed = 1; /* we are ready to do stuff now */
++
++	return sysfs_create_group(&pdev->dev.kobj, &gta02hdq_attr_group);
++}
++
++static int gta02hdq_remove(struct platform_device *pdev)
++{
++	sysfs_remove_group(&pdev->dev.kobj, &gta02hdq_attr_group);
++	return 0;
++}
++
++static struct platform_driver gta02hdq_driver = {
++	.probe		= gta02hdq_probe,
++	.remove		= gta02hdq_remove,
++#ifdef CONFIG_PM
++	.suspend	= gta02hdq_suspend,
++	.resume		= gta02hdq_resume,
++#endif
++	.driver		= {
++		.name		= "gta02-hdq",
++	},
++};
++
++static int __init gta02hdq_init(void)
++{
++	return platform_driver_register(&gta02hdq_driver);
++}
++
++static void __exit gta02hdq_exit(void)
++{
++ 	platform_driver_unregister(&gta02hdq_driver);
++}
++
++module_init(gta02hdq_init);
++module_exit(gta02hdq_exit);
++
++MODULE_AUTHOR("Andy Green <andy@openmoko.com>");
++MODULE_DESCRIPTION("GTA02 HDQ driver");
++MODULE_LICENSE("GPL");
+diff --git a/include/asm-arm/arch-s3c2410/fiq_ipc_gta02.h b/include/asm-arm/arch-s3c2410/fiq_ipc_gta02.h
+index 507d235..c5eb3df 100644
+--- a/include/asm-arm/arch-s3c2410/fiq_ipc_gta02.h
++++ b/include/asm-arm/arch-s3c2410/fiq_ipc_gta02.h
+@@ -19,12 +19,35 @@
+ #include <asm/arch/pwm.h>
+ #include <asm/plat-s3c/regs-timer.h>
+ 
++enum hdq_bitbang_states {
++	HDQB_IDLE = 0,
++	HDQB_TX_BREAK,
++	HDQB_TX_BREAK_RECOVERY,
++	HDQB_ADS_CALC,
++	HDQB_ADS_LOW,
++	HDQB_ADS_HIGH,
++	HDQB_WAIT_RX,
++	HDQB_DATA_RX_LOW,
++	HDQB_DATA_RX_HIGH,
++	HDQB_WAIT_TX,
++};
+ 
+ struct fiq_ipc {
+ 	/* vibrator */
+ 	unsigned long vib_gpio_pin; /* which pin to meddle with */
+ 	u8 vib_pwm; /* 0 = OFF -- will ensure GPIO deasserted and stop FIQ */
+ 	u8 vib_pwm_latched;
++
++	/* hdq */
++	u8 hdq_probed; /* nonzero after HDQ driver probed */
++	struct mutex hdq_lock; /* if you want to use hdq, you have to take lock */
++	unsigned long hdq_gpio_pin; /* GTA02 = GPD14 which pin to meddle with */
++	u8 hdq_ads; /* b7..b6 = register address, b0 = r/w */
++	u8 hdq_tx_data; /* data to tx for write action */
++	u8 hdq_rx_data; /* data received in read action */
++	u8 hdq_request_ctr; /* incremented by "user" to request a transfer */
++	u8 hdq_transaction_ctr; /* incremented after each transfer */
++	u8 hdq_error; /* 0 = no error */
+ };
+ 
+ /* actual definition lives in arch/arm/mach-s3c2440/fiq_c_isr.c */
+diff --git a/include/asm-arm/arch-s3c2410/gta02.h b/include/asm-arm/arch-s3c2410/gta02.h
+index fa49d93..f686a7a 100644
+--- a/include/asm-arm/arch-s3c2410/gta02.h
++++ b/include/asm-arm/arch-s3c2410/gta02.h
+@@ -37,6 +37,7 @@
+ 
+ #define GTA02v3_GPIO_nG1_CS	S3C2410_GPD12	/* v3 + v4 only */
+ #define GTA02v3_GPIO_nG2_CS	S3C2410_GPD13	/* v3 + v4 only */
++#define GTA02v5_GPIO_HDQ	S3C2410_GPD14   /* v5 + */
+ 
+ #define GTA02_GPIO_nG1_INT	S3C2410_GPF0
+ #define GTA02_GPIO_IO1		S3C2410_GPF1
+diff --git a/include/linux/gta02_hdq.h b/include/linux/gta02_hdq.h
+new file mode 100644
+index 0000000..2f43a62
+--- /dev/null
++++ b/include/linux/gta02_hdq.h
+@@ -0,0 +1,8 @@
++#ifndef __GTA02HDQ_H__
++#define __GTA02HDQ_H__
++
++int gta02hdq_read(int address);
++int gta02hdq_write(int address, u8 data);
++int gta02hdq_initialized(void);
++
++#endif
+-- 
+1.5.6.3
+