diff options
author | mirko <mirko@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2008-12-12 11:58:53 +0000 |
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committer | mirko <mirko@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2008-12-12 11:58:53 +0000 |
commit | fc54b9bf158eea9cae647ce2c58f7d9989af173a (patch) | |
tree | 54644c1229434d7ee13c5872bda4129e34337fc0 /target/linux/s3c24xx/patches-2.6.24/1056-fiq-hdq.patch.patch | |
parent | d9f49b62b28ebd245587854efa484974d90debbf (diff) |
changed Makefile and profiles, added patches for kernel 2.6.24
(stable-branch of Openmoko)
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13613 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/s3c24xx/patches-2.6.24/1056-fiq-hdq.patch.patch')
-rw-r--r-- | target/linux/s3c24xx/patches-2.6.24/1056-fiq-hdq.patch.patch | 606 |
1 files changed, 606 insertions, 0 deletions
diff --git a/target/linux/s3c24xx/patches-2.6.24/1056-fiq-hdq.patch.patch b/target/linux/s3c24xx/patches-2.6.24/1056-fiq-hdq.patch.patch new file mode 100644 index 000000000..6e4fad324 --- /dev/null +++ b/target/linux/s3c24xx/patches-2.6.24/1056-fiq-hdq.patch.patch @@ -0,0 +1,606 @@ +From 7ffc881aa6a039b2e353449b97dca8a64ee3969a Mon Sep 17 00:00:00 2001 +From: mokopatches <mokopatches@openmoko.org> +Date: Sun, 13 Apr 2008 07:23:52 +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(>a02_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, >a02hdq_attr_group); ++} ++ ++static int gta02hdq_remove(struct platform_device *pdev) ++{ ++ sysfs_remove_group(&pdev->dev.kobj, >a02hdq_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(>a02hdq_driver); ++} ++ ++static void __exit gta02hdq_exit(void) ++{ ++ platform_driver_unregister(>a02hdq_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 +-- +1.5.6.5 + |