target/linux/s3c24xx/patches-2.6.26/0117--neo-Every-access-to-GPIO-bank-B-has-to-go-through.patch

   1 From 81bf1ac05c1ba0d32db8fe8fb0cd52cb6b7d8e7e Mon Sep 17 00:00:00 2001
   2 From: Holger Freyther <zecke@openmoko.org>
   3 Date: Fri, 25 Jul 2008 23:06:05 +0100
   4 Subject: [PATCH] [neo] Every access to GPIO bank B has to go through the shadow code
   5
   6     - Any setting of any PIN on bank B will undo the LED setting.
   7       Introduce neo1973_gpb_set_pin to set the PIN in a way not losing
   8       the LED or any other shadowed setting.
   9     - Update users of GPBXY for gta01 and gta02.
  10
  11 Signed-Off-By: Holger Freyther <zecke@openmoko.org>
  12 ---
  13  arch/arm/mach-s3c2410/mach-gta01.c     |    9 ++--
  14  arch/arm/mach-s3c2440/mach-gta02.c     |   10 ++--
  15  arch/arm/plat-s3c24xx/Makefile         |    4 +-
  16  arch/arm/plat-s3c24xx/neo1973_pm_bt.c  |   15 +++---
  17  arch/arm/plat-s3c24xx/neo1973_pm_gps.c |    5 ++-
  18  arch/arm/plat-s3c24xx/neo1973_pm_gsm.c |    9 ++--
  19  arch/arm/plat-s3c24xx/neo1973_shadow.c |   86 ++++++++++++++++++++++++++++++++
  20  drivers/leds/leds-neo1973-gta02.c      |   12 ++--
  21  drivers/leds/leds-neo1973-vibrator.c   |    7 ++-
  22  drivers/video/backlight/gta01_bl.c     |    9 ++--
  23  include/asm-arm/plat-s3c24xx/neo1973.h |   33 ++++++++++++
  24  11 files changed, 165 insertions(+), 34 deletions(-)
  25  create mode 100644 arch/arm/plat-s3c24xx/neo1973_shadow.c
  26  create mode 100644 include/asm-arm/plat-s3c24xx/neo1973.h
  27
  28 diff --git a/arch/arm/mach-s3c2410/mach-gta01.c b/arch/arm/mach-s3c2410/mach-gta01.c
  29 index 8c1a402..a4384b6 100644
  30 --- a/arch/arm/mach-s3c2410/mach-gta01.c
  31 +++ b/arch/arm/mach-s3c2410/mach-gta01.c
  32 @@ -72,6 +72,7 @@
  33  #include <asm/plat-s3c24xx/cpu.h>
  34  #include <asm/plat-s3c24xx/pm.h>
  35  #include <asm/plat-s3c24xx/udc.h>
  36 +#include <asm/plat-s3c24xx/neo1973.h>
  37
  38  static struct map_desc gta01_iodesc[] __initdata = {
  39         {
  40 @@ -416,10 +417,10 @@ static void gta01_mmc_set_power(unsigned char power_mode, unsigned short vdd)
  41         case GTA01Bv4_SYSTEM_REV:
  42                 switch (power_mode) {
  43                 case MMC_POWER_OFF:
  44 -                       s3c2410_gpio_setpin(GTA01_GPIO_SDMMC_ON, 1);
  45 +                       neo1973_gpb_setpin(GTA01_GPIO_SDMMC_ON, 1);
  46                         break;
  47                 case MMC_POWER_ON:
  48 -                       s3c2410_gpio_setpin(GTA01_GPIO_SDMMC_ON, 0);
  49 +                       neo1973_gpb_setpin(GTA01_GPIO_SDMMC_ON, 0);
  50                         break;
  51                 }
  52                 break;
  53 @@ -442,10 +443,10 @@ static void gta01_udc_command(enum s3c2410_udc_cmd_e cmd)
  54
  55         switch (cmd) {
  56         case S3C2410_UDC_P_ENABLE:
  57 -               s3c2410_gpio_setpin(GTA01_GPIO_USB_PULLUP, 1);
  58 +               neo1973_gpb_setpin(GTA01_GPIO_USB_PULLUP, 1);
  59                 break;
  60         case S3C2410_UDC_P_DISABLE:
  61 -               s3c2410_gpio_setpin(GTA01_GPIO_USB_PULLUP, 0);
  62 +               neo1973_gpb_setpin(GTA01_GPIO_USB_PULLUP, 0);
  63                 break;
  64         default:
  65                 break;
  66 diff --git a/arch/arm/mach-s3c2440/mach-gta02.c b/arch/arm/mach-s3c2440/mach-gta02.c
  67 index f9e00d5..27babc9 100644
  68 --- a/arch/arm/mach-s3c2440/mach-gta02.c
  69 +++ b/arch/arm/mach-s3c2440/mach-gta02.c
  70 @@ -75,6 +75,7 @@
  71  #include <asm/plat-s3c24xx/cpu.h>
  72  #include <asm/plat-s3c24xx/pm.h>
  73  #include <asm/plat-s3c24xx/udc.h>
  74 +#include <asm/plat-s3c24xx/neo1973.h>
  75  #include <linux/jbt6k74.h>
  76
  77  #include <linux/glamofb.h>
  78 @@ -127,11 +128,11 @@ FIQ_HANDLER_ENTRY(256, 512)
  79
  80         if (fiq_ipc.vib_pwm_latched || fiq_ipc.vib_pwm) { /* not idle */
  81                 if (((u8)_fiq_count_fiqs) == fiq_ipc.vib_pwm_latched)
  82 -                       s3c2410_gpio_setpin(fiq_ipc.vib_gpio_pin, 0);
  83 +                       neo1973_gpb_setpin(fiq_ipc.vib_gpio_pin, 0);
  84                 if (((u8)_fiq_count_fiqs) == 0) {
  85                         fiq_ipc.vib_pwm_latched = fiq_ipc.vib_pwm;
  86                         if (fiq_ipc.vib_pwm_latched)
  87 -                               s3c2410_gpio_setpin(fiq_ipc.vib_gpio_pin, 1);
  88 +                               neo1973_gpb_setpin(fiq_ipc.vib_gpio_pin, 1);
  89                 }
  90                 divisor = FIQ_DIVISOR_VIBRATOR;
  91         }
  92 @@ -319,6 +320,7 @@ FIQ_HANDLER_ENTRY(256, 512)
  93  FIQ_HANDLER_END()
  94
  95
  96 +
  97  /**
  98   * returns PCB revision information in b9,b8 and b2,b1,b0
  99   * Pre-GTA02 A6 returns 0x000
 100 @@ -763,10 +765,10 @@ static void gta02_udc_command(enum s3c2410_udc_cmd_e cmd)
 101
 102         switch (cmd) {
 103         case S3C2410_UDC_P_ENABLE:
 104 -               s3c2410_gpio_setpin(GTA02_GPIO_USB_PULLUP, 1);
 105 +               neo1973_gpb_setpin(GTA02_GPIO_USB_PULLUP, 1);
 106                 break;
 107         case S3C2410_UDC_P_DISABLE:
 108 -               s3c2410_gpio_setpin(GTA02_GPIO_USB_PULLUP, 0);
 109 +               neo1973_gpb_setpin(GTA02_GPIO_USB_PULLUP, 0);
 110                 break;
 111         case S3C2410_UDC_P_RESET:
 112                 /* FIXME! */
 113 diff --git a/arch/arm/plat-s3c24xx/Makefile b/arch/arm/plat-s3c24xx/Makefile
 114 index 6b32a8a..c173f7b 100644
 115 --- a/arch/arm/plat-s3c24xx/Makefile
 116 +++ b/arch/arm/plat-s3c24xx/Makefile
 117 @@ -33,4 +33,6 @@ obj-$(CONFIG_MACH_NEO1973)    += neo1973_version.o \
 118                                    neo1973_pm_host.o \
 119                                    neo1973_pm_gsm.o \
 120                                    neo1973_pm_gps.o \
 121 -                                  neo1973_pm_bt.o
 122 +                                  neo1973_pm_bt.o  \
 123 +                                  neo1973_shadow.o
 124 +
 125 diff --git a/arch/arm/plat-s3c24xx/neo1973_pm_bt.c b/arch/arm/plat-s3c24xx/neo1973_pm_bt.c
 126 index a9694b4..dfc9ae8 100644
 127 --- a/arch/arm/plat-s3c24xx/neo1973_pm_bt.c
 128 +++ b/arch/arm/plat-s3c24xx/neo1973_pm_bt.c
 129 @@ -18,6 +18,7 @@
 130
 131  #include <asm/hardware.h>
 132  #include <asm/mach-types.h>
 133 +#include <asm/plat-s3c24xx/neo1973.h>
 134
 135  #ifdef CONFIG_MACH_NEO1973_GTA01
 136  #include <asm/arch/gta01.h>
 137 @@ -95,20 +96,20 @@ static ssize_t bt_write(struct device *dev, struct device_attribute *attr,
 138                         /* if we are powering up, assert reset, then power,
 139                          * then release reset */
 140                         if (on) {
 141 -                               s3c2410_gpio_setpin(GTA01_GPIO_BT_EN, 0);
 142 +                               neo1973_gpb_setpin(GTA01_GPIO_BT_EN, 0);
 143                                 pcf50606_voltage_set(pcf50606_global,
 144                                                      PCF50606_REGULATOR_D1REG,
 145                                                      3100);
 146                         }
 147                         pcf50606_onoff_set(pcf50606_global,
 148                                            PCF50606_REGULATOR_D1REG, on);
 149 -                       s3c2410_gpio_setpin(GTA01_GPIO_BT_EN, on);
 150 +                       neo1973_gpb_setpin(GTA01_GPIO_BT_EN, on);
 151                         break;
 152  #endif /* CONFIG_MACH_NEO1973_GTA01 */
 153
 154  #ifdef CONFIG_MACH_NEO1973_GTA02
 155                 case MACH_TYPE_NEO1973_GTA02:
 156 -                       s3c2410_gpio_setpin(GTA02_GPIO_BT_EN, on ? 0 : 1);
 157 +                       neo1973_gpb_setpin(GTA02_GPIO_BT_EN, on ? 0 : 1);
 158                         if (on)
 159                                 pcf50633_voltage_set(pcf50633_global,
 160                                         PCF50633_REGULATOR_LDO4, 3200);
 161 @@ -127,13 +128,13 @@ static ssize_t bt_write(struct device *dev, struct device_attribute *attr,
 162
 163  #ifdef CONFIG_MACH_NEO1973_GTA01
 164                 case MACH_TYPE_NEO1973_GTA01:
 165 -                       s3c2410_gpio_setpin(GTA01_GPIO_BT_EN, on ? 0 : 1);
 166 +                       neo1973_gpb_setpin(GTA01_GPIO_BT_EN, on ? 0 : 1);
 167                         break;
 168  #endif /* CONFIG_MACH_NEO1973_GTA01 */
 169
 170  #ifdef CONFIG_MACH_NEO1973_GTA02
 171                 case MACH_TYPE_NEO1973_GTA02:
 172 -                       s3c2410_gpio_setpin(GTA02_GPIO_BT_EN, on ? 0 : 1);
 173 +                       neo1973_gpb_setpin(GTA02_GPIO_BT_EN, on ? 0 : 1);
 174                         break;
 175  #endif /* CONFIG_MACH_NEO1973_GTA02 */
 176
 177 @@ -192,7 +193,7 @@ static int __init gta01_bt_probe(struct platform_device *pdev)
 178                                    PCF50606_REGULATOR_D1REG, 0);
 179                 /* we pull reset to low to make sure that the chip doesn't
 180                  * drain power through the reset line */
 181 -               s3c2410_gpio_setpin(GTA01_GPIO_BT_EN, 0);
 182 +               neo1973_gpb_setpin(GTA01_GPIO_BT_EN, 0);
 183                 break;
 184  #endif /* CONFIG_MACH_NEO1973_GTA01 */
 185
 186 @@ -203,7 +204,7 @@ static int __init gta01_bt_probe(struct platform_device *pdev)
 187                                      PCF50633_REGULATOR_LDO4, 0);
 188                 /* we pull reset to low to make sure that the chip doesn't
 189                  * drain power through the reset line */
 190 -               s3c2410_gpio_setpin(GTA02_GPIO_BT_EN, 0);
 191 +               neo1973_gpb_setpin(GTA02_GPIO_BT_EN, 0);
 192                 break;
 193  #endif /* CONFIG_MACH_NEO1973_GTA02 */
 194
 195 diff --git a/arch/arm/plat-s3c24xx/neo1973_pm_gps.c b/arch/arm/plat-s3c24xx/neo1973_pm_gps.c
 196 index d882f7b..d020f8d 100644
 197 --- a/arch/arm/plat-s3c24xx/neo1973_pm_gps.c
 198 +++ b/arch/arm/plat-s3c24xx/neo1973_pm_gps.c
 199 @@ -20,6 +20,9 @@
 200  #include <asm/hardware.h>
 201
 202  #include <asm/mach-types.h>
 203 +
 204 +#include <asm/plat-s3c24xx/neo1973.h>
 205 +
 206  #ifdef CONFIG_MACH_NEO1973_GTA01
 207  #include <asm/arch/gta01.h>
 208  #include <linux/pcf50606.h>
 209 @@ -264,7 +267,7 @@ static void gps_pwron_set(int on)
 210  {
 211  #ifdef CONFIG_MACH_NEO1973_GTA01
 212         if (machine_is_neo1973_gta01())
 213 -               s3c2410_gpio_setpin(GTA01_GPIO_GPS_PWRON, on);
 214 +               neo1973_gpb_setpin(GTA01_GPIO_GPS_PWRON, on);
 215  #endif /* CONFIG_MACH_NEO1973_GTA01 */
 216
 217  #ifdef CONFIG_MACH_NEO1973_GTA02
 218 diff --git a/arch/arm/plat-s3c24xx/neo1973_pm_gsm.c b/arch/arm/plat-s3c24xx/neo1973_pm_gsm.c
 219 index 5ad942e..149b866 100644
 220 --- a/arch/arm/plat-s3c24xx/neo1973_pm_gsm.c
 221 +++ b/arch/arm/plat-s3c24xx/neo1973_pm_gsm.c
 222 @@ -22,6 +22,7 @@
 223  #include <asm/gpio.h>
 224  #include <asm/mach-types.h>
 225  #include <asm/arch/gta01.h>
 226 +#include <asm/plat-s3c24xx/neo1973.h>
 227
 228  #ifdef CONFIG_MACH_NEO1973_GTA02
 229  #include <asm/arch/gta02.h>
 230 @@ -109,9 +110,9 @@ static ssize_t gsm_write(struct device *dev, struct device_attribute *attr,
 231  #endif
 232                         }
 233
 234 -                       s3c2410_gpio_setpin(GTA01_GPIO_MODEM_ON, 1);
 235 +                       neo1973_gpb_setpin(GTA01_GPIO_MODEM_ON, 1);
 236                 } else {
 237 -                       s3c2410_gpio_setpin(GTA01_GPIO_MODEM_ON, 0);
 238 +                       neo1973_gpb_setpin(GTA01_GPIO_MODEM_ON, 0);
 239
 240                         switch (system_rev) {
 241  #ifdef CONFIG_MACH_NEO1973_GTA02
 242 @@ -138,9 +139,9 @@ static ssize_t gsm_write(struct device *dev, struct device_attribute *attr,
 243                 }
 244         } else if (!strcmp(attr->attr.name, "reset")) {
 245                 if (machine_is_neo1973_gta01())
 246 -                       s3c2410_gpio_setpin(GTA01_GPIO_MODEM_RST, on);
 247 +                       neo1973_gpb_setpin(GTA01_GPIO_MODEM_RST, on);
 248                 else if (machine_is_neo1973_gta02())
 249 -                       s3c2410_gpio_setpin(GTA02_GPIO_MODEM_RST, on);
 250 +                       neo1973_gpb_setpin(GTA02_GPIO_MODEM_RST, on);
 251         } else if (!strcmp(attr->attr.name, "download")) {
 252                 if (machine_is_neo1973_gta01())
 253                         s3c2410_gpio_setpin(GTA01_GPIO_MODEM_DNLOAD, on);
 254 diff --git a/arch/arm/plat-s3c24xx/neo1973_shadow.c b/arch/arm/plat-s3c24xx/neo1973_shadow.c
 255 new file mode 100644
 256 index 0000000..09667da
 257 --- /dev/null
 258 +++ b/arch/arm/plat-s3c24xx/neo1973_shadow.c
 259 @@ -0,0 +1,86 @@
 260 +/*
 261 + * include/asm-arm/plat-s3c24xx/neo1973.h
 262 + *
 263 + * Common utility code for GTA01 and GTA02
 264 + *
 265 + * Copyright (C) 2008 by Openmoko, Inc.
 266 + * Author: Holger Hans Peter Freyther <freyther@openmoko.org>
 267 + * All rights reserved.
 268 + *
 269 + * This program is free software; you can redistribute it and/or
 270 + * modify it under the terms of the GNU General Public License as
 271 + * published by the Free Software Foundation; either version 2 of
 272 + * the License, or (at your option) any later version.
 273 + *
 274 + * This program is distributed in the hope that it will be useful,
 275 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
 276 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 277 + * GNU General Public License for more details.
 278 + *
 279 + * You should have received a copy of the GNU General Public License
 280 + * along with this program; if not, write to the Free Software
 281 + * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 282 + * MA 02111-1307 USA
 283 + *
 284 + */
 285 +
 286 +#include <linux/io.h>
 287 +#include <linux/irq.h>
 288 +
 289 +#include <asm/gpio.h>
 290 +#include <asm/plat-s3c24xx/neo1973.h>
 291 +
 292 +/**
 293 + * Shadow GPIO bank B handling. For the LEDs we need to keep track of the state
 294 + * in software. The s3c2410_gpio_setpin must not be used for GPIOs on bank B
 295 + */
 296 +static unsigned long gpb_mask;
 297 +static unsigned long gpb_state;
 298 +
 299 +void neo1973_gpb_add_shadow_gpio(unsigned int gpio)
 300 +{
 301 +       unsigned long offset = S3C2410_GPIO_OFFSET(gpio);
 302 +       unsigned long flags;
 303 +
 304 +       local_irq_save(flags);
 305 +       gpb_mask |= 1L << offset;
 306 +       local_irq_restore(flags);
 307 +}
 308 +EXPORT_SYMBOL(neo1973_gpb_add_shadow_gpio);
 309 +
 310 +static void set_shadow_gpio(unsigned long offset, unsigned int value)
 311 +{
 312 +       unsigned long state = value != 0;
 313 +
 314 +       gpb_state &= ~(1L << offset);
 315 +       gpb_state |= state << offset;
 316 +}
 317 +
 318 +void neo1973_gpb_setpin(unsigned int pin, unsigned to)
 319 +{
 320 +       void __iomem *base = S3C24XX_GPIO_BASE(S3C2410_GPB0);
 321 +       unsigned long offset = S3C2410_GPIO_OFFSET(pin);
 322 +       unsigned long flags;
 323 +       unsigned long dat;
 324 +
 325 +       BUG_ON(base != S3C24XX_GPIO_BASE(pin));
 326 +
 327 +       local_irq_save(flags);
 328 +       dat = __raw_readl(base + 0x04);
 329 +
 330 +       /* Add the shadow values */
 331 +       dat &= ~gpb_mask;
 332 +       dat |= gpb_state;
 333 +
 334 +       /* Do the operation like s3c2410_gpio_setpin */
 335 +       dat &= ~(1L << offset);
 336 +       dat |= to << offset;
 337 +
 338 +       /* Update the shadow state */
 339 +       if ((1L << offset) & gpb_mask)
 340 +               set_shadow_gpio(offset, to);
 341 +
 342 +       __raw_writel(dat, base + 0x04);
 343 +       local_irq_restore(flags);
 344 +}
 345 +EXPORT_SYMBOL(neo1973_gpb_setpin);
 346 diff --git a/drivers/leds/leds-neo1973-gta02.c b/drivers/leds/leds-neo1973-gta02.c
 347 index 343550a..952ad69 100644
 348 --- a/drivers/leds/leds-neo1973-gta02.c
 349 +++ b/drivers/leds/leds-neo1973-gta02.c
 350 @@ -20,6 +20,7 @@
 351  #include <asm/arch/pwm.h>
 352  #include <asm/arch/gta02.h>
 353  #include <asm/plat-s3c/regs-timer.h>
 354 +#include <asm/plat-s3c24xx/neo1973.h>
 355
 356  #define MAX_LEDS 3
 357  #define COUNTER 256
 358 @@ -60,14 +61,13 @@ static void gta02led_set(struct led_classdev *led_cdev,
 359          * value == 0 -> 0% duty cycle (zero power)
 360          */
 361         mutex_lock(&lp->mutex);
 362 +
 363         if (lp->has_pwm) {
 364 -                       s3c2410_pwm_duty_cycle(value, &lp->pwm);
 365 +               s3c2410_pwm_duty_cycle(value, &lp->pwm);
 366         } else {
 367 -               if (value)
 368 -                       s3c2410_gpio_setpin(lp->gpio, 1);
 369 -               else
 370 -                       s3c2410_gpio_setpin(lp->gpio, 0);
 371 +               neo1973_gpb_setpin(lp->gpio, value ? 1 : 0);
 372         }
 373 +
 374         mutex_unlock(&lp->mutex);
 375  }
 376
 377 @@ -164,7 +164,7 @@ static int __init gta02led_probe(struct platform_device *pdev)
 378                 case S3C2410_GPB3:
 379                         lp->has_pwm = 0;
 380                         s3c2410_gpio_cfgpin(lp->gpio, S3C2410_GPIO_OUTPUT);
 381 -                       s3c2410_gpio_setpin(lp->gpio, 0);
 382 +                       neo1973_gpb_add_shadow_gpio(lp->gpio);
 383                         break;
 384                 default:
 385                         break;
 386 diff --git a/drivers/leds/leds-neo1973-vibrator.c b/drivers/leds/leds-neo1973-vibrator.c
 387 index f31302d..647e860 100644
 388 --- a/drivers/leds/leds-neo1973-vibrator.c
 389 +++ b/drivers/leds/leds-neo1973-vibrator.c
 390 @@ -24,6 +24,7 @@
 391  #include <asm/plat-s3c/regs-timer.h>
 392
 393  #include <asm/arch-s3c2410/fiq_ipc_gta02.h>
 394 +#include <asm/plat-s3c24xx/neo1973.h>
 395
 396  #define COUNTER 64
 397
 398 @@ -56,9 +57,9 @@ static void neo1973_vib_vib_set(struct led_classdev *led_cdev,
 399                 s3c2410_pwm_duty_cycle(value / 4, &vp->pwm);
 400         else {
 401                 if (value)
 402 -                       s3c2410_gpio_setpin(vp->gpio, 1);
 403 +                       neo1973_gpb_setpin(vp->gpio, 1);
 404                 else
 405 -                       s3c2410_gpio_setpin(vp->gpio, 0);
 406 +                       neo1973_gpb_setpin(vp->gpio, 0);
 407         }
 408
 409         mutex_unlock(&vp->mutex);
 410 @@ -131,7 +132,7 @@ static int __init neo1973_vib_probe(struct platform_device *pdev)
 411         platform_set_drvdata(pdev, &neo1973_vib_led);
 412
 413         if (machine_is_neo1973_gta02()) { /* use FIQ to control GPIO */
 414 -               s3c2410_gpio_setpin(neo1973_vib_led.gpio, 0); /* off */
 415 +               neo1973_gpb_setpin(neo1973_vib_led.gpio, 0); /* off */
 416                 s3c2410_gpio_cfgpin(neo1973_vib_led.gpio, S3C2410_GPIO_OUTPUT);
 417                 /* safe, kmalloc'd copy needed for FIQ ISR */
 418                 fiq_ipc.vib_gpio_pin = neo1973_vib_led.gpio;
 419 diff --git a/drivers/video/backlight/gta01_bl.c b/drivers/video/backlight/gta01_bl.c
 420 index bd7d41f..301ec9c 100644
 421 --- a/drivers/video/backlight/gta01_bl.c
 422 +++ b/drivers/video/backlight/gta01_bl.c
 423 @@ -40,6 +40,7 @@
 424  #include <asm/arch/pwm.h>
 425
 426  #include <asm/plat-s3c/regs-timer.h>
 427 +#include <asm/plat-s3c24xx/neo1973.h>
 428
 429  static struct backlight_properties gta01bl_prop;
 430  static struct backlight_device *gta01_backlight_device;
 431 @@ -83,12 +84,12 @@ static int gta01bl_send_intensity(struct backlight_device *bd)
 432         mutex_lock(&gta01bl.mutex);
 433  #ifdef GTA01_BACKLIGHT_ONOFF_ONLY
 434         if (intensity)
 435 -               s3c2410_gpio_setpin(GTA01_GPIO_BACKLIGHT, 1);
 436 +               neo1973_gpb_setpin(GTA01_GPIO_BACKLIGHT, 1);
 437         else
 438 -               s3c2410_gpio_setpin(GTA01_GPIO_BACKLIGHT, 0);
 439 +               neo1973_gpb_setpin(GTA01_GPIO_BACKLIGHT, 0);
 440  #else
 441         if (intensity == bd->props.max_brightness) {
 442 -               s3c2410_gpio_setpin(GTA01_GPIO_BACKLIGHT, 1);
 443 +               neo1973_gpb_setpin(GTA01_GPIO_BACKLIGHT, 1);
 444                 s3c2410_gpio_cfgpin(GTA01_GPIO_BACKLIGHT, S3C2410_GPIO_OUTPUT);
 445         } else  {
 446                 s3c2410_pwm_duty_cycle(intensity & 0xffff, &gta01bl.pwm);
 447 @@ -222,7 +223,7 @@ static int gta01bl_remove(struct platform_device *dev)
 448         mutex_destroy(&gta01bl.mutex);
 449
 450         s3c2410_gpio_cfgpin(GTA01_GPIO_BACKLIGHT, S3C2410_GPIO_OUTPUT);
 451 -       s3c2410_gpio_setpin(GTA01_GPIO_BACKLIGHT, 1);
 452 +       neo1973_gpb_setpin(GTA01_GPIO_BACKLIGHT, 1);
 453
 454         return 0;
 455  }
 456 diff --git a/include/asm-arm/plat-s3c24xx/neo1973.h b/include/asm-arm/plat-s3c24xx/neo1973.h
 457 new file mode 100644
 458 index 0000000..63297de
 459 --- /dev/null
 460 +++ b/include/asm-arm/plat-s3c24xx/neo1973.h
 461 @@ -0,0 +1,33 @@
 462 +/*
 463 + * include/asm-arm/plat-s3c24xx/neo1973.h
 464 + *
 465 + * Common utility code for GTA01 and GTA02
 466 + *
 467 + * Copyright (C) 2008 by Openmoko, Inc.
 468 + * Author: Holger Hans Peter Freyther <freyther@openmoko.org>
 469 + * All rights reserved.
 470 + *
 471 + * This program is free software; you can redistribute it and/or
 472 + * modify it under the terms of the GNU General Public License as
 473 + * published by the Free Software Foundation; either version 2 of
 474 + * the License, or (at your option) any later version.
 475 + *
 476 + * This program is distributed in the hope that it will be useful,
 477 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
 478 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 479 + * GNU General Public License for more details.
 480 + *
 481 + * You should have received a copy of the GNU General Public License
 482 + * along with this program; if not, write to the Free Software
 483 + * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 484 + * MA 02111-1307 USA
 485 + *
 486 + */
 487 +
 488 +#ifndef NEO1973_H
 489 +#define NEO1973_H
 490 +
 491 +void neo1973_gpb_add_shadow_gpio(unsigned int gpio);
 492 +void neo1973_gpb_setpin(unsigned int pin, unsigned to);
 493 +
 494 +#endif
 495 --
 496 1.5.6.3
 497