15 files changed, 649 insertions, 63 deletions

diff --git a/arch/arm/mach-sa1100/collie.c b/arch/arm/mach-sa1100/collie.c
index be7e5a3c47d0..9982c5c28edf 100644
--- a/arch/arm/mach-sa1100/collie.c
+++ b/arch/arm/mach-sa1100/collie.c
@@ -26,6 +26,7 @@
 #include <linux/mtd/partitions.h>
 #include <linux/timer.h>
 #include <linux/gpio.h>
+#include <linux/pda_power.h>
 
 #include <mach/hardware.h>
 #include <asm/mach-types.h>
@@ -56,6 +57,7 @@ static struct resource collie_scoop_resources[] = {
 static struct scoop_config collie_scoop_setup = {
         .io_dir         = COLLIE_SCOOP_IO_DIR,
         .io_out         = COLLIE_SCOOP_IO_OUT,
+        .gpio_base      = COLLIE_SCOOP_GPIO_BASE,
 };
 
 struct platform_device colliescoop_device = {
@@ -85,6 +87,70 @@ static struct scoop_pcmcia_config collie_pcmcia_config = {
 static struct mcp_plat_data collie_mcp_data = {
         .mccr0          = MCCR0_ADM | MCCR0_ExtClk,
         .sclk_rate      = 9216000,
+        .gpio_base      = COLLIE_TC35143_GPIO_BASE,
+};
+
+/*
+ * Collie AC IN
+ */
+static int collie_power_init(struct device *dev)
+{
+        int ret = gpio_request(COLLIE_GPIO_AC_IN, "ac in");
+        if (ret)
+                goto err_gpio_req;
+
+        ret = gpio_direction_input(COLLIE_GPIO_AC_IN);
+        if (ret)
+                goto err_gpio_in;
+
+        return 0;
+
+err_gpio_in:
+        gpio_free(COLLIE_GPIO_AC_IN);
+err_gpio_req:
+        return ret;
+}
+
+static void collie_power_exit(struct device *dev)
+{
+        gpio_free(COLLIE_GPIO_AC_IN);
+}
+
+static int collie_power_ac_online(void)
+{
+        return gpio_get_value(COLLIE_GPIO_AC_IN) == 2;
+}
+
+static char *collie_ac_supplied_to[] = {
+        "main-battery",
+        "backup-battery",
+};
+
+static struct pda_power_pdata collie_power_data = {
+        .init                   = collie_power_init,
+        .is_ac_online           = collie_power_ac_online,
+        .exit                   = collie_power_exit,
+        .supplied_to            = collie_ac_supplied_to,
+        .num_supplicants        = ARRAY_SIZE(collie_ac_supplied_to),
+};
+
+static struct resource collie_power_resource[] = {
+        {
+                .name           = "ac",
+                .start          = gpio_to_irq(COLLIE_GPIO_AC_IN),
+                .end            = gpio_to_irq(COLLIE_GPIO_AC_IN),
+                .flags          = IORESOURCE_IRQ |
+                                  IORESOURCE_IRQ_HIGHEDGE |
+                                  IORESOURCE_IRQ_LOWEDGE,
+        },
+};
+
+static struct platform_device collie_power_device = {
+        .name                   = "pda-power",
+        .id                     = -1,
+        .dev.platform_data      = &collie_power_data,
+        .resource               = collie_power_resource,
+        .num_resources          = ARRAY_SIZE(collie_power_resource),
 };
 
 #ifdef CONFIG_SHARP_LOCOMO
@@ -178,6 +244,7 @@ struct platform_device collie_locomo_device = {
 static struct platform_device *devices[] __initdata = {
         &collie_locomo_device,
         &colliescoop_device,
+        &collie_power_device,
 };
 
 static struct mtd_partition collie_partitions[] = {
@@ -248,22 +315,24 @@ static void __init collie_init(void)
         GPDR = GPIO_LDD8 | GPIO_LDD9 | GPIO_LDD10 | GPIO_LDD11 | GPIO_LDD12 |
                 GPIO_LDD13 | GPIO_LDD14 | GPIO_LDD15 | GPIO_SSP_TXD |
                 GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SDLC_SCLK |
-                COLLIE_GPIO_UCB1x00_RESET | COLLIE_GPIO_nMIC_ON |
-                COLLIE_GPIO_nREMOCON_ON | GPIO_32_768kHz;
+                _COLLIE_GPIO_UCB1x00_RESET | _COLLIE_GPIO_nMIC_ON |
+                _COLLIE_GPIO_nREMOCON_ON | GPIO_32_768kHz;
 
         PPDR = PPC_LDD0 | PPC_LDD1 | PPC_LDD2 | PPC_LDD3 | PPC_LDD4 | PPC_LDD5 |
                 PPC_LDD6 | PPC_LDD7 | PPC_L_PCLK | PPC_L_LCLK | PPC_L_FCLK | PPC_L_BIAS |
                 PPC_TXD1 | PPC_TXD2 | PPC_TXD3 | PPC_TXD4 | PPC_SCLK | PPC_SFRM;
 
-        PWER = COLLIE_GPIO_AC_IN | COLLIE_GPIO_CO | COLLIE_GPIO_ON_KEY |
-                COLLIE_GPIO_WAKEUP | COLLIE_GPIO_nREMOCON_INT | PWER_RTC;
+        PWER = _COLLIE_GPIO_AC_IN | _COLLIE_GPIO_CO | _COLLIE_GPIO_ON_KEY |
+                _COLLIE_GPIO_WAKEUP | _COLLIE_GPIO_nREMOCON_INT | PWER_RTC;
 
-        PGSR = COLLIE_GPIO_nREMOCON_ON;
+        PGSR = _COLLIE_GPIO_nREMOCON_ON;
 
         PSDR = PPC_RXD1 | PPC_RXD2 | PPC_RXD3 | PPC_RXD4;
 
         PCFR = PCFR_OPDE;
 
+        GPSR |= _COLLIE_GPIO_UCB1x00_RESET;
+
 
         platform_scoop_config = &collie_pcmcia_config;
 
diff --git a/arch/arm/mach-sa1100/include/mach/collie.h b/arch/arm/mach-sa1100/include/mach/collie.h
index 9efb569cdb60..71a0b3fdcc8c 100644
--- a/arch/arm/mach-sa1100/include/mach/collie.h
+++ b/arch/arm/mach-sa1100/include/mach/collie.h
@@ -25,29 +25,39 @@
 #define COLLIE_GPIO_VPEN        (COLLIE_SCOOP_GPIO_BASE + 7)
 #define COLLIE_SCP_LB_VOL_CHG   SCOOP_GPCR_PA19
 
-#define COLLIE_SCOOP_IO_DIR     ( COLLIE_SCP_MUTE_L | COLLIE_SCP_MUTE_R | \
+#define COLLIE_SCOOP_IO_DIR     (COLLIE_SCP_MUTE_L | COLLIE_SCP_MUTE_R | \
                                 COLLIE_SCP_5VON | COLLIE_SCP_AMP_ON | \
-                                COLLIE_SCP_LB_VOL_CHG )
-#define COLLIE_SCOOP_IO_OUT     ( COLLIE_SCP_MUTE_L | COLLIE_SCP_MUTE_R )
+                                COLLIE_SCP_LB_VOL_CHG)
+#define COLLIE_SCOOP_IO_OUT     (COLLIE_SCP_MUTE_L | COLLIE_SCP_MUTE_R)
 
-/* GPIOs for which the generic definition doesn't say much */
+/* GPIOs for gpiolib  */
 
-#define COLLIE_GPIO_ON_KEY              GPIO_GPIO (0)
-#define COLLIE_GPIO_AC_IN               GPIO_GPIO (1)
-#define COLLIE_GPIO_SDIO_INT            GPIO_GPIO (11)
-#define COLLIE_GPIO_CF_IRQ              GPIO_GPIO (14)
-#define COLLIE_GPIO_nREMOCON_INT        GPIO_GPIO (15)
-#define COLLIE_GPIO_UCB1x00_RESET       GPIO_GPIO (16)
-#define COLLIE_GPIO_nMIC_ON             GPIO_GPIO (17)
-#define COLLIE_GPIO_nREMOCON_ON         GPIO_GPIO (18)
-#define COLLIE_GPIO_CO                  GPIO_GPIO (20)
-#define COLLIE_GPIO_MCP_CLK             GPIO_GPIO (21)
-#define COLLIE_GPIO_CF_CD               GPIO_GPIO (22)
-#define COLLIE_GPIO_UCB1x00_IRQ         GPIO_GPIO (23)
-#define COLLIE_GPIO_WAKEUP              GPIO_GPIO (24)
-#define COLLIE_GPIO_GA_INT              GPIO_GPIO (25)
-#define COLLIE_GPIO_MAIN_BAT_LOW        GPIO_GPIO (26)
+#define COLLIE_GPIO_ON_KEY              (0)
+#define COLLIE_GPIO_AC_IN               (1)
+#define COLLIE_GPIO_SDIO_INT            (11)
+#define COLLIE_GPIO_CF_IRQ              (14)
+#define COLLIE_GPIO_nREMOCON_INT        (15)
+#define COLLIE_GPIO_UCB1x00_RESET       (16)
+#define COLLIE_GPIO_nMIC_ON             (17)
+#define COLLIE_GPIO_nREMOCON_ON         (18)
+#define COLLIE_GPIO_CO                  (20)
+#define COLLIE_GPIO_MCP_CLK             (21)
+#define COLLIE_GPIO_CF_CD               (22)
+#define COLLIE_GPIO_UCB1x00_IRQ         (23)
+#define COLLIE_GPIO_WAKEUP              (24)
+#define COLLIE_GPIO_GA_INT              (25)
+#define COLLIE_GPIO_MAIN_BAT_LOW        (26)
 
+/* GPIO definitions for direct register access */
+
+#define _COLLIE_GPIO_ON_KEY             GPIO_GPIO(0)
+#define _COLLIE_GPIO_AC_IN              GPIO_GPIO(1)
+#define _COLLIE_GPIO_nREMOCON_INT       GPIO_GPIO(15)
+#define _COLLIE_GPIO_UCB1x00_RESET      GPIO_GPIO(16)
+#define _COLLIE_GPIO_nMIC_ON            GPIO_GPIO(17)
+#define _COLLIE_GPIO_nREMOCON_ON        GPIO_GPIO(18)
+#define _COLLIE_GPIO_CO                 GPIO_GPIO(20)
+#define _COLLIE_GPIO_WAKEUP             GPIO_GPIO(24)
 /* Interrupts */
 
 #define COLLIE_IRQ_GPIO_ON_KEY          IRQ_GPIO0
@@ -70,19 +80,20 @@
 #define COLLIE_LCM_IRQ_GPIO_nSD_WP      IRQ_LOCOMO_GPIO14
 
 /* GPIO's on the TC35143AF (Toshiba Analog Frontend) */
-#define COLLIE_TC35143_GPIO_VERSION0    UCB_IO_0        /* GPIO0=Version                 */
-#define COLLIE_TC35143_GPIO_TBL_CHK     UCB_IO_1        /* GPIO1=TBL_CHK                 */
-#define COLLIE_TC35143_GPIO_VPEN_ON     UCB_IO_2        /* GPIO2=VPNE_ON                 */
-#define COLLIE_TC35143_GPIO_IR_ON       UCB_IO_3        /* GPIO3=IR_ON                   */
-#define COLLIE_TC35143_GPIO_AMP_ON      UCB_IO_4        /* GPIO4=AMP_ON                  */
-#define COLLIE_TC35143_GPIO_VERSION1    UCB_IO_5        /* GPIO5=Version                 */
-#define COLLIE_TC35143_GPIO_FS8KLPF     UCB_IO_5        /* GPIO5=fs 8k LPF               */
-#define COLLIE_TC35143_GPIO_BUZZER_BIAS UCB_IO_6        /* GPIO6=BUZZER BIAS             */
-#define COLLIE_TC35143_GPIO_MBAT_ON     UCB_IO_7        /* GPIO7=MBAT_ON                 */
-#define COLLIE_TC35143_GPIO_BBAT_ON     UCB_IO_8        /* GPIO8=BBAT_ON                 */
-#define COLLIE_TC35143_GPIO_TMP_ON      UCB_IO_9        /* GPIO9=TMP_ON                  */
-#define COLLIE_TC35143_GPIO_IN          ( UCB_IO_0 | UCB_IO_2 | UCB_IO_5 )
-#define COLLIE_TC35143_GPIO_OUT         ( UCB_IO_1 | UCB_IO_3 | UCB_IO_4 | UCB_IO_6 | \
-                                        UCB_IO_7 | UCB_IO_8 | UCB_IO_9 )
+#define COLLIE_TC35143_GPIO_BASE        (GPIO_MAX + 13)
+#define COLLIE_TC35143_GPIO_VERSION0    UCB_IO_0
+#define COLLIE_TC35143_GPIO_TBL_CHK     UCB_IO_1
+#define COLLIE_TC35143_GPIO_VPEN_ON     UCB_IO_2
+#define COLLIE_TC35143_GPIO_IR_ON       UCB_IO_3
+#define COLLIE_TC35143_GPIO_AMP_ON      UCB_IO_4
+#define COLLIE_TC35143_GPIO_VERSION1    UCB_IO_5
+#define COLLIE_TC35143_GPIO_FS8KLPF     UCB_IO_5
+#define COLLIE_TC35143_GPIO_BUZZER_BIAS UCB_IO_6
+#define COLLIE_GPIO_MBAT_ON             (COLLIE_TC35143_GPIO_BASE + 7)
+#define COLLIE_GPIO_BBAT_ON             (COLLIE_TC35143_GPIO_BASE + 8)
+#define COLLIE_GPIO_TMP_ON              (COLLIE_TC35143_GPIO_BASE + 9)
+#define COLLIE_TC35143_GPIO_IN          (UCB_IO_0 | UCB_IO_2 | UCB_IO_5)
+#define COLLIE_TC35143_GPIO_OUT         (UCB_IO_1 | UCB_IO_3 | UCB_IO_4 \
+                                                | UCB_IO_6)
 
 #endif
diff --git a/arch/arm/mach-sa1100/include/mach/gpio.h b/arch/arm/mach-sa1100/include/mach/gpio.h
index 582a0c92da53..7befc104e9a9 100644
--- a/arch/arm/mach-sa1100/include/mach/gpio.h
+++ b/arch/arm/mach-sa1100/include/mach/gpio.h
@@ -49,20 +49,9 @@ static inline void gpio_set_value(unsigned gpio, int value)
 
 #define gpio_cansleep   __gpio_cansleep
 
-static inline unsigned gpio_to_irq(unsigned gpio)
-{
-        if (gpio < 11)
-                return IRQ_GPIO0 + gpio;
-        else
-                return IRQ_GPIO11 - 11 + gpio;
-}
-
-static inline unsigned irq_to_gpio(unsigned irq)
-{
-        if (irq < IRQ_GPIO11_27)
-                return irq - IRQ_GPIO0;
-        else
-                return irq - IRQ_GPIO11 + 11;
-}
+#define gpio_to_irq(gpio)       ((gpio < 11) ? (IRQ_GPIO0 + gpio) : \
+                                        (IRQ_GPIO11 - 11 + gpio))
+#define irq_to_gpio(irq)        ((irq < IRQ_GPIO11_27) ? (irq - IRQ_GPIO0) : \
+                                        (irq - IRQ_GPIO11 + 11))
 
 #endif
diff --git a/arch/arm/mach-sa1100/include/mach/mcp.h b/arch/arm/mach-sa1100/include/mach/mcp.h
index fb8b09a57ad7..ed1a331508a7 100644
--- a/arch/arm/mach-sa1100/include/mach/mcp.h
+++ b/arch/arm/mach-sa1100/include/mach/mcp.h
@@ -16,6 +16,7 @@ struct mcp_plat_data {
         u32 mccr0;
         u32 mccr1;
         unsigned int sclk_rate;
+        int gpio_base;
 };
 
 #endif
diff --git a/drivers/leds/leds-locomo.c b/drivers/leds/leds-locomo.c
index 5d91362e3066..1f7c10f6b7f2 100644
--- a/drivers/leds/leds-locomo.c
+++ b/drivers/leds/leds-locomo.c
@@ -44,7 +44,7 @@ static void locomoled_brightness_set1(struct led_classdev *led_cdev,
 
 static struct led_classdev locomo_led0 = {
         .name                   = "locomo:amber:charge",
-        .default_trigger        = "sharpsl-charge",
+        .default_trigger        = "main-battery-charging",
         .brightness_set         = locomoled_brightness_set0,
 };
 
diff --git a/drivers/mfd/mcp-core.c b/drivers/mfd/mcp-core.c
index 57271cb3b316..84815f9ef636 100644
--- a/drivers/mfd/mcp-core.c
+++ b/drivers/mfd/mcp-core.c
@@ -17,11 +17,11 @@
 #include <linux/device.h>
 #include <linux/slab.h>
 #include <linux/string.h>
+#include <linux/mfd/mcp.h>
 
 #include <mach/dma.h>
 #include <asm/system.h>
 
-#include "mcp.h"
 
 #define to_mcp(d)               container_of(d, struct mcp, attached_device)
 #define to_mcp_driver(d)        container_of(d, struct mcp_driver, drv)
diff --git a/drivers/mfd/mcp-sa11x0.c b/drivers/mfd/mcp-sa11x0.c
index 62b32dabf629..258427232728 100644
--- a/drivers/mfd/mcp-sa11x0.c
+++ b/drivers/mfd/mcp-sa11x0.c
@@ -19,6 +19,7 @@
 #include <linux/spinlock.h>
 #include <linux/slab.h>
 #include <linux/platform_device.h>
+#include <linux/mfd/mcp.h>
 
 #include <mach/dma.h>
 #include <mach/hardware.h>
@@ -28,7 +29,6 @@
 
 #include <mach/assabet.h>
 
-#include "mcp.h"
 
 struct mcp_sa11x0 {
         u32     mccr0;
@@ -163,6 +163,7 @@ static int mcp_sa11x0_probe(struct platform_device *pdev)
         mcp->dma_audio_wr       = DMA_Ser4MCP0Wr;
         mcp->dma_telco_rd       = DMA_Ser4MCP1Rd;
         mcp->dma_telco_wr       = DMA_Ser4MCP1Wr;
+        mcp->gpio_base          = data->gpio_base;
 
         platform_set_drvdata(pdev, mcp);
 
diff --git a/drivers/mfd/ucb1x00-assabet.c b/drivers/mfd/ucb1x00-assabet.c
index 86fed4870f93..cea9da60850d 100644
--- a/drivers/mfd/ucb1x00-assabet.c
+++ b/drivers/mfd/ucb1x00-assabet.c
@@ -14,10 +14,10 @@
 #include <linux/fs.h>
 #include <linux/proc_fs.h>
 #include <linux/device.h>
+#include <linux/mfd/ucb1x00.h>
 
 #include <mach/dma.h>
 
-#include "ucb1x00.h"
 
 #define UCB1X00_ATTR(name,input)\
 static ssize_t name##_show(struct device *dev, struct device_attribute *attr, \
diff --git a/drivers/mfd/ucb1x00-core.c b/drivers/mfd/ucb1x00-core.c
index 60c3988f3cf3..252b74188ec2 100644
--- a/drivers/mfd/ucb1x00-core.c
+++ b/drivers/mfd/ucb1x00-core.c
@@ -25,12 +25,12 @@
 #include <linux/interrupt.h>
 #include <linux/device.h>
 #include <linux/mutex.h>
+#include <linux/mfd/ucb1x00.h>
+#include <linux/gpio.h>
 
 #include <mach/dma.h>
 #include <mach/hardware.h>
 
-#include "ucb1x00.h"
-
 static DEFINE_MUTEX(ucb1x00_mutex);
 static LIST_HEAD(ucb1x00_drivers);
 static LIST_HEAD(ucb1x00_devices);
@@ -108,6 +108,60 @@ unsigned int ucb1x00_io_read(struct ucb1x00 *ucb)
         return ucb1x00_reg_read(ucb, UCB_IO_DATA);
 }
 
+static void ucb1x00_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
+{
+        struct ucb1x00 *ucb = container_of(chip, struct ucb1x00, gpio);
+        unsigned long flags;
+
+        spin_lock_irqsave(&ucb->io_lock, flags);
+        if (value)
+                ucb->io_out |= 1 << offset;
+        else
+                ucb->io_out &= ~(1 << offset);
+
+        ucb1x00_reg_write(ucb, UCB_IO_DATA, ucb->io_out);
+        spin_unlock_irqrestore(&ucb->io_lock, flags);
+}
+
+static int ucb1x00_gpio_get(struct gpio_chip *chip, unsigned offset)
+{
+        struct ucb1x00 *ucb = container_of(chip, struct ucb1x00, gpio);
+        return ucb1x00_reg_read(ucb, UCB_IO_DATA) & (1 << offset);
+}
+
+static int ucb1x00_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
+{
+        struct ucb1x00 *ucb = container_of(chip, struct ucb1x00, gpio);
+        unsigned long flags;
+
+        spin_lock_irqsave(&ucb->io_lock, flags);
+        ucb->io_dir &= ~(1 << offset);
+        ucb1x00_reg_write(ucb, UCB_IO_DIR, ucb->io_dir);
+        spin_unlock_irqrestore(&ucb->io_lock, flags);
+
+        return 0;
+}
+
+static int ucb1x00_gpio_direction_output(struct gpio_chip *chip, unsigned offset
+                , int value)
+{
+        struct ucb1x00 *ucb = container_of(chip, struct ucb1x00, gpio);
+        unsigned long flags;
+
+        spin_lock_irqsave(&ucb->io_lock, flags);
+        ucb->io_dir |= (1 << offset);
+        ucb1x00_reg_write(ucb, UCB_IO_DIR, ucb->io_dir);
+
+        if (value)
+                ucb->io_out |= 1 << offset;
+        else
+                ucb->io_out &= ~(1 << offset);
+        ucb1x00_reg_write(ucb, UCB_IO_DATA, ucb->io_out);
+        spin_unlock_irqrestore(&ucb->io_lock, flags);
+
+        return 0;
+}
+
 /*
  * UCB1300 data sheet says we must:
  *  1. enable ADC       => 5us (including reference startup time)
@@ -476,6 +530,7 @@ static int ucb1x00_probe(struct mcp *mcp)
         struct ucb1x00_driver *drv;
         unsigned int id;
         int ret = -ENODEV;
+        int temp;
 
         mcp_enable(mcp);
         id = mcp_reg_read(mcp, UCB_ID);
@@ -508,12 +563,27 @@ static int ucb1x00_probe(struct mcp *mcp)
                 goto err_free;
         }
 
+        ucb->gpio.base = -1;
+        if (mcp->gpio_base != 0) {
+                ucb->gpio.label = dev_name(&ucb->dev);
+                ucb->gpio.base = mcp->gpio_base;
+                ucb->gpio.ngpio = 10;
+                ucb->gpio.set = ucb1x00_gpio_set;
+                ucb->gpio.get = ucb1x00_gpio_get;
+                ucb->gpio.direction_input = ucb1x00_gpio_direction_input;
+                ucb->gpio.direction_output = ucb1x00_gpio_direction_output;
+                ret = gpiochip_add(&ucb->gpio);
+                if (ret)
+                        goto err_free;
+        } else
+                dev_info(&ucb->dev, "gpio_base not set so no gpiolib support");
+
         ret = request_irq(ucb->irq, ucb1x00_irq, IRQF_TRIGGER_RISING,
                           "UCB1x00", ucb);
         if (ret) {
                 printk(KERN_ERR "ucb1x00: unable to grab irq%d: %d\n",
                         ucb->irq, ret);
-                goto err_free;
+                goto err_gpio;
         }
 
         mcp_set_drvdata(mcp, ucb);
@@ -522,6 +592,7 @@ static int ucb1x00_probe(struct mcp *mcp)
         if (ret)
                 goto err_irq;
 
+
         INIT_LIST_HEAD(&ucb->devs);
         mutex_lock(&ucb1x00_mutex);
         list_add(&ucb->node, &ucb1x00_devices);
@@ -529,10 +600,14 @@ static int ucb1x00_probe(struct mcp *mcp)
                 ucb1x00_add_dev(ucb, drv);
         }
         mutex_unlock(&ucb1x00_mutex);
+
         goto out;
 
  err_irq:
         free_irq(ucb->irq, ucb);
+ err_gpio:
+        if (ucb->gpio.base != -1)
+                temp = gpiochip_remove(&ucb->gpio);
  err_free:
         kfree(ucb);
  err_disable:
@@ -545,6 +620,7 @@ static void ucb1x00_remove(struct mcp *mcp)
 {
         struct ucb1x00 *ucb = mcp_get_drvdata(mcp);
         struct list_head *l, *n;
+        int ret;
 
         mutex_lock(&ucb1x00_mutex);
         list_del(&ucb->node);
@@ -554,6 +630,12 @@ static void ucb1x00_remove(struct mcp *mcp)
         }
         mutex_unlock(&ucb1x00_mutex);
 
+        if (ucb->gpio.base != -1) {
+                ret = gpiochip_remove(&ucb->gpio);
+                if (ret)
+                        dev_err(&ucb->dev, "Can't remove gpio chip: %d\n", ret);
+        }
+
         free_irq(ucb->irq, ucb);
         device_unregister(&ucb->dev);
 }
@@ -604,6 +686,7 @@ static int ucb1x00_resume(struct mcp *mcp)
         struct ucb1x00 *ucb = mcp_get_drvdata(mcp);
         struct ucb1x00_dev *dev;
 
+        ucb1x00_reg_write(ucb, UCB_IO_DIR, ucb->io_dir);
         mutex_lock(&ucb1x00_mutex);
         list_for_each_entry(dev, &ucb->devs, dev_node) {
                 if (dev->drv->resume)
diff --git a/drivers/mfd/ucb1x00-ts.c b/drivers/mfd/ucb1x00-ts.c
index 61b7d3eb9a2f..000cb414a78a 100644
--- a/drivers/mfd/ucb1x00-ts.c
+++ b/drivers/mfd/ucb1x00-ts.c
@@ -30,12 +30,12 @@
 #include <linux/freezer.h>
 #include <linux/slab.h>
 #include <linux/kthread.h>
+#include <linux/mfd/ucb1x00.h>
 
 #include <mach/dma.h>
 #include <mach/collie.h>
 #include <asm/mach-types.h>
 
-#include "ucb1x00.h"
 
 
 struct ucb1x00_ts {
diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
index cea6cef27e89..118674925516 100644
--- a/drivers/power/Kconfig
+++ b/drivers/power/Kconfig
@@ -77,6 +77,13 @@ config BATTERY_TOSA
           Say Y to enable support for the battery on the Sharp Zaurus
           SL-6000 (tosa) models.
 
+config BATTERY_COLLIE
+        tristate "Sharp SL-5500 (collie) battery"
+        depends on SA1100_COLLIE && MCP_UCB1200
+        help
+          Say Y to enable support for the battery on the Sharp Zaurus
+          SL-5500 (collie) models.
+
 config BATTERY_WM97XX
         bool "WM97xx generic battery driver"
         depends on TOUCHSCREEN_WM97XX=y
diff --git a/drivers/power/Makefile b/drivers/power/Makefile
index b96f29d91c28..356cdfd3c8b2 100644
--- a/drivers/power/Makefile
+++ b/drivers/power/Makefile
@@ -24,6 +24,7 @@ obj-$(CONFIG_BATTERY_DS2782)	+= ds2782_battery.o
 obj-$(CONFIG_BATTERY_PMU)       += pmu_battery.o
 obj-$(CONFIG_BATTERY_OLPC)      += olpc_battery.o
 obj-$(CONFIG_BATTERY_TOSA)      += tosa_battery.o
+obj-$(CONFIG_BATTERY_COLLIE)    += collie_battery.o
 obj-$(CONFIG_BATTERY_WM97XX)    += wm97xx_battery.o
 obj-$(CONFIG_BATTERY_BQ27x00)   += bq27x00_battery.o
 obj-$(CONFIG_BATTERY_DA9030)    += da9030_battery.o
diff --git a/drivers/power/collie_battery.c b/drivers/power/collie_battery.c
new file mode 100644
index 000000000000..039f41ae217d
--- /dev/null
+++ b/drivers/power/collie_battery.c
@@ -0,0 +1,418 @@
+/*
+ * Battery and Power Management code for the Sharp SL-5x00
+ *
+ * Copyright (C) 2009 Thomas Kunze
+ *
+ * based on tosa_battery.c
+ *
+ * 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/module.h>
+#include <linux/power_supply.h>
+#include <linux/delay.h>
+#include <linux/spinlock.h>
+#include <linux/interrupt.h>
+#include <linux/gpio.h>
+#include <linux/mfd/ucb1x00.h>
+
+#include <asm/mach/sharpsl_param.h>
+#include <asm/mach-types.h>
+#include <mach/collie.h>
+
+static DEFINE_MUTEX(bat_lock); /* protects gpio pins */
+static struct work_struct bat_work;
+static struct ucb1x00 *ucb;
+
+struct collie_bat {
+        int status;
+        struct power_supply psy;
+        int full_chrg;
+
+        struct mutex work_lock; /* protects data */
+
+        bool (*is_present)(struct collie_bat *bat);
+        int gpio_full;
+        int gpio_charge_on;
+
+        int technology;
+
+        int gpio_bat;
+        int adc_bat;
+        int adc_bat_divider;
+        int bat_max;
+        int bat_min;
+
+        int gpio_temp;
+        int adc_temp;
+        int adc_temp_divider;
+};
+
+static struct collie_bat collie_bat_main;
+
+static unsigned long collie_read_bat(struct collie_bat *bat)
+{
+        unsigned long value = 0;
+
+        if (bat->gpio_bat < 0 || bat->adc_bat < 0)
+                return 0;
+        mutex_lock(&bat_lock);
+        gpio_set_value(bat->gpio_bat, 1);
+        msleep(5);
+        ucb1x00_adc_enable(ucb);
+        value = ucb1x00_adc_read(ucb, bat->adc_bat, UCB_SYNC);
+        ucb1x00_adc_disable(ucb);
+        gpio_set_value(bat->gpio_bat, 0);
+        mutex_unlock(&bat_lock);
+        value = value * 1000000 / bat->adc_bat_divider;
+
+        return value;
+}
+
+static unsigned long collie_read_temp(struct collie_bat *bat)
+{
+        unsigned long value = 0;
+        if (bat->gpio_temp < 0 || bat->adc_temp < 0)
+                return 0;
+
+        mutex_lock(&bat_lock);
+        gpio_set_value(bat->gpio_temp, 1);
+        msleep(5);
+        ucb1x00_adc_enable(ucb);
+        value = ucb1x00_adc_read(ucb, bat->adc_temp, UCB_SYNC);
+        ucb1x00_adc_disable(ucb);
+        gpio_set_value(bat->gpio_temp, 0);
+        mutex_unlock(&bat_lock);
+
+        value = value * 10000 / bat->adc_temp_divider;
+
+        return value;
+}
+
+static int collie_bat_get_property(struct power_supply *psy,
+                            enum power_supply_property psp,
+                            union power_supply_propval *val)
+{
+        int ret = 0;
+        struct collie_bat *bat = container_of(psy, struct collie_bat, psy);
+
+        if (bat->is_present && !bat->is_present(bat)
+                        && psp != POWER_SUPPLY_PROP_PRESENT) {
+                return -ENODEV;
+        }
+
+        switch (psp) {
+        case POWER_SUPPLY_PROP_STATUS:
+                val->intval = bat->status;
+                break;
+        case POWER_SUPPLY_PROP_TECHNOLOGY:
+                val->intval = bat->technology;
+                break;
+        case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+                val->intval = collie_read_bat(bat);
+                break;
+        case POWER_SUPPLY_PROP_VOLTAGE_MAX:
+                if (bat->full_chrg == -1)
+                        val->intval = bat->bat_max;
+                else
+                        val->intval = bat->full_chrg;
+                break;
+        case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
+                val->intval = bat->bat_max;
+                break;
+        case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
+                val->intval = bat->bat_min;
+                break;
+        case POWER_SUPPLY_PROP_TEMP:
+                val->intval = collie_read_temp(bat);
+                break;
+        case POWER_SUPPLY_PROP_PRESENT:
+                val->intval = bat->is_present ? bat->is_present(bat) : 1;
+                break;
+        default:
+                ret = -EINVAL;
+                break;
+        }
+        return ret;
+}
+
+static void collie_bat_external_power_changed(struct power_supply *psy)
+{
+        schedule_work(&bat_work);
+}
+
+static irqreturn_t collie_bat_gpio_isr(int irq, void *data)
+{
+        pr_info("collie_bat_gpio irq: %d\n", gpio_get_value(irq_to_gpio(irq)));
+        schedule_work(&bat_work);
+        return IRQ_HANDLED;
+}
+
+static void collie_bat_update(struct collie_bat *bat)
+{
+        int old;
+        struct power_supply *psy = &bat->psy;
+
+        mutex_lock(&bat->work_lock);
+
+        old = bat->status;
+
+        if (bat->is_present && !bat->is_present(bat)) {
+                printk(KERN_NOTICE "%s not present\n", psy->name);
+                bat->status = POWER_SUPPLY_STATUS_UNKNOWN;
+                bat->full_chrg = -1;
+        } else if (power_supply_am_i_supplied(psy)) {
+                if (bat->status == POWER_SUPPLY_STATUS_DISCHARGING) {
+                        gpio_set_value(bat->gpio_charge_on, 1);
+                        mdelay(15);
+                }
+
+                if (gpio_get_value(bat->gpio_full)) {
+                        if (old == POWER_SUPPLY_STATUS_CHARGING ||
+                                        bat->full_chrg == -1)
+                                bat->full_chrg = collie_read_bat(bat);
+
+                        gpio_set_value(bat->gpio_charge_on, 0);
+                        bat->status = POWER_SUPPLY_STATUS_FULL;
+                } else {
+                        gpio_set_value(bat->gpio_charge_on, 1);
+                        bat->status = POWER_SUPPLY_STATUS_CHARGING;
+                }
+        } else {
+                gpio_set_value(bat->gpio_charge_on, 0);
+                bat->status = POWER_SUPPLY_STATUS_DISCHARGING;
+        }
+
+        if (old != bat->status)
+                power_supply_changed(psy);
+
+        mutex_unlock(&bat->work_lock);
+}
+
+static void collie_bat_work(struct work_struct *work)
+{
+        collie_bat_update(&collie_bat_main);
+}
+
+
+static enum power_supply_property collie_bat_main_props[] = {
+        POWER_SUPPLY_PROP_STATUS,
+        POWER_SUPPLY_PROP_TECHNOLOGY,
+        POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
+        POWER_SUPPLY_PROP_VOLTAGE_NOW,
+        POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
+        POWER_SUPPLY_PROP_VOLTAGE_MAX,
+        POWER_SUPPLY_PROP_PRESENT,
+        POWER_SUPPLY_PROP_TEMP,
+};
+
+static enum power_supply_property collie_bat_bu_props[] = {
+        POWER_SUPPLY_PROP_STATUS,
+        POWER_SUPPLY_PROP_TECHNOLOGY,
+        POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
+        POWER_SUPPLY_PROP_VOLTAGE_NOW,
+        POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
+        POWER_SUPPLY_PROP_VOLTAGE_MAX,
+        POWER_SUPPLY_PROP_PRESENT,
+};
+
+static struct collie_bat collie_bat_main = {
+        .status = POWER_SUPPLY_STATUS_DISCHARGING,
+        .full_chrg = -1,
+        .psy = {
+                .name           = "main-battery",
+                .type           = POWER_SUPPLY_TYPE_BATTERY,
+                .properties     = collie_bat_main_props,
+                .num_properties = ARRAY_SIZE(collie_bat_main_props),
+                .get_property   = collie_bat_get_property,
+                .external_power_changed = collie_bat_external_power_changed,
+                .use_for_apm    = 1,
+        },
+
+        .gpio_full = COLLIE_GPIO_CO,
+        .gpio_charge_on = COLLIE_GPIO_CHARGE_ON,
+
+        .technology = POWER_SUPPLY_TECHNOLOGY_LIPO,
+
+        .gpio_bat = COLLIE_GPIO_MBAT_ON,
+        .adc_bat = UCB_ADC_INP_AD1,
+        .adc_bat_divider = 155,
+        .bat_max = 4310000,
+        .bat_min = 1551 * 1000000 / 414,
+
+        .gpio_temp = COLLIE_GPIO_TMP_ON,
+        .adc_temp = UCB_ADC_INP_AD0,
+        .adc_temp_divider = 10000,
+};
+
+static struct collie_bat collie_bat_bu = {
+        .status = POWER_SUPPLY_STATUS_UNKNOWN,
+        .full_chrg = -1,
+
+        .psy = {
+                .name           = "backup-battery",
+                .type           = POWER_SUPPLY_TYPE_BATTERY,
+                .properties     = collie_bat_bu_props,
+                .num_properties = ARRAY_SIZE(collie_bat_bu_props),
+                .get_property   = collie_bat_get_property,
+                .external_power_changed = collie_bat_external_power_changed,
+        },
+
+        .gpio_full = -1,
+        .gpio_charge_on = -1,
+
+        .technology = POWER_SUPPLY_TECHNOLOGY_LiMn,
+
+        .gpio_bat = COLLIE_GPIO_BBAT_ON,
+        .adc_bat = UCB_ADC_INP_AD1,
+        .adc_bat_divider = 155,
+        .bat_max = 3000000,
+        .bat_min = 1900000,
+
+        .gpio_temp = -1,
+        .adc_temp = -1,
+        .adc_temp_divider = -1,
+};
+
+static struct {
+        int gpio;
+        char *name;
+        bool output;
+        int value;
+} gpios[] = {
+        { COLLIE_GPIO_CO,               "main battery full",    0, 0 },
+        { COLLIE_GPIO_MAIN_BAT_LOW,     "main battery low",     0, 0 },
+        { COLLIE_GPIO_CHARGE_ON,        "main charge on",       1, 0 },
+        { COLLIE_GPIO_MBAT_ON,          "main battery",         1, 0 },
+        { COLLIE_GPIO_TMP_ON,           "main battery temp",    1, 0 },
+        { COLLIE_GPIO_BBAT_ON,          "backup battery",       1, 0 },
+};
+
+#ifdef CONFIG_PM
+static int collie_bat_suspend(struct ucb1x00_dev *dev, pm_message_t state)
+{
+        /* flush all pending status updates */
+        flush_scheduled_work();
+        return 0;
+}
+
+static int collie_bat_resume(struct ucb1x00_dev *dev)
+{
+        /* things may have changed while we were away */
+        schedule_work(&bat_work);
+        return 0;
+}
+#else
+#define collie_bat_suspend NULL
+#define collie_bat_resume NULL
+#endif
+
+static int __devinit collie_bat_probe(struct ucb1x00_dev *dev)
+{
+        int ret;
+        int i;
+
+        if (!machine_is_collie())
+                return -ENODEV;
+
+        ucb = dev->ucb;
+
+        for (i = 0; i < ARRAY_SIZE(gpios); i++) {
+                ret = gpio_request(gpios[i].gpio, gpios[i].name);
+                if (ret) {
+                        i--;
+                        goto err_gpio;
+                }
+
+                if (gpios[i].output)
+                        ret = gpio_direction_output(gpios[i].gpio,
+                                        gpios[i].value);
+                else
+                        ret = gpio_direction_input(gpios[i].gpio);
+
+                if (ret)
+                        goto err_gpio;
+        }
+
+        mutex_init(&collie_bat_main.work_lock);
+
+        INIT_WORK(&bat_work, collie_bat_work);
+
+        ret = power_supply_register(&dev->ucb->dev, &collie_bat_main.psy);
+        if (ret)
+                goto err_psy_reg_main;
+        ret = power_supply_register(&dev->ucb->dev, &collie_bat_bu.psy);
+        if (ret)
+                goto err_psy_reg_bu;
+
+        ret = request_irq(gpio_to_irq(COLLIE_GPIO_CO),
+                                collie_bat_gpio_isr,
+                                IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+                                "main full", &collie_bat_main);
+        if (!ret) {
+                schedule_work(&bat_work);
+                return 0;
+        }
+        power_supply_unregister(&collie_bat_bu.psy);
+err_psy_reg_bu:
+        power_supply_unregister(&collie_bat_main.psy);
+err_psy_reg_main:
+
+        /* see comment in collie_bat_remove */
+        flush_scheduled_work();
+
+        i--;
+err_gpio:
+        for (; i >= 0; i--)
+                gpio_free(gpios[i].gpio);
+
+        return ret;
+}
+
+static void __devexit collie_bat_remove(struct ucb1x00_dev *dev)
+{
+        int i;
+
+        free_irq(gpio_to_irq(COLLIE_GPIO_CO), &collie_bat_main);
+
+        power_supply_unregister(&collie_bat_bu.psy);
+        power_supply_unregister(&collie_bat_main.psy);
+
+        /*
+         * now flush all pending work.
+         * we won't get any more schedules, since all
+         * sources (isr and external_power_changed)
+         * are unregistered now.
+         */
+        flush_scheduled_work();
+
+        for (i = ARRAY_SIZE(gpios) - 1; i >= 0; i--)
+                gpio_free(gpios[i].gpio);
+}
+
+static struct ucb1x00_driver collie_bat_driver = {
+        .add            = collie_bat_probe,
+        .remove         = __devexit_p(collie_bat_remove),
+        .suspend        = collie_bat_suspend,
+        .resume         = collie_bat_resume,
+};
+
+static int __init collie_bat_init(void)
+{
+        return ucb1x00_register_driver(&collie_bat_driver);
+}
+
+static void __exit collie_bat_exit(void)
+{
+        ucb1x00_unregister_driver(&collie_bat_driver);
+}
+
+module_init(collie_bat_init);
+module_exit(collie_bat_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Thomas Kunze");
+MODULE_DESCRIPTION("Collie battery driver");
diff --git a/drivers/mfd/mcp.h b/include/linux/mfd/mcp.h
index c093a93b8808..ee496708e38b 100644
--- a/drivers/mfd/mcp.h
+++ b/include/linux/mfd/mcp.h
@@ -10,6 +10,8 @@
 #ifndef MCP_H
 #define MCP_H
 
+#include <mach/dma.h>
+
 struct mcp_ops;
 
 struct mcp {
@@ -24,6 +26,7 @@ struct mcp {
         dma_device_t    dma_telco_rd;
         dma_device_t    dma_telco_wr;
         struct device   attached_device;
+        int             gpio_base;
 };
 
 struct mcp_ops {
diff --git a/drivers/mfd/ucb1x00.h b/include/linux/mfd/ucb1x00.h
index a8ad8a0ed5db..aa9c3789bed4 100644
--- a/drivers/mfd/ucb1x00.h
+++ b/include/linux/mfd/ucb1x00.h
@@ -1,5 +1,5 @@
 /*
- *  linux/drivers/mfd/ucb1x00.h
+ *  linux/include/mfd/ucb1x00.h
  *
  *  Copyright (C) 2001 Russell King, All Rights Reserved.
  *
@@ -10,6 +10,9 @@
 #ifndef UCB1200_H
 #define UCB1200_H
 
+#include <linux/mfd/mcp.h>
+#include <linux/gpio.h>
+
 #define UCB_IO_DATA     0x00
 #define UCB_IO_DIR      0x01
 
@@ -100,7 +103,6 @@
 #define UCB_MODE_DYN_VFLAG_ENA  (1 << 12)
 #define UCB_MODE_AUD_OFF_CAN    (1 << 13)
 
-#include "mcp.h"
 
 struct ucb1x00_irq {
         void *devid;
@@ -123,6 +125,7 @@ struct ucb1x00 {
         struct device           dev;
         struct list_head        node;
         struct list_head        devs;
+        struct gpio_chip        gpio;
 };
 
 struct ucb1x00_driver;