Merge tag 'mfd-3.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-next

Pull MFD update from Samuel Ortiz:
 "For the 3.11 merge we only have one new MFD driver for the Kontron
  PLD.

  But we also have:
   - Support for the TPS659038 PMIC from the palmas driver.
   - Intel's Coleto Creek and Avoton SoCs support from the lpc_ich
     driver.
   - RTL8411B support from the rtsx driver.
   - More DT support for the Arizona, max8998, twl4030-power and the
     ti_am335x_tsadc drivers.
   - The SSBI driver move under MFD.
   - A conversion to the devm_* API for most of the MFD drivers.
   - The twl4030-power got split from twl-core into its own module.
   - A major ti_am335x_adc cleanup, leading to a proper DT support.
   - Our regular arizona and wm* updates and cleanups from the Wolfson
     folks.
   - A better error handling and initialization, and a regulator
     subdevice addition for the 88pm80x driver.
   - A bulk platform_set_drvdata() call removal that's no longer need
     since commit 0998d0631001 ("device-core: Ensure drvdata = NULL when
     no driver is bound")

* tag 'mfd-3.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-next: (102 commits)
  mfd: sec: Provide max_register to regmap
  mfd: wm8994: Remove duplicate check for active JACKDET
  MAINTAINERS: Add include directory to MFD file patterns
  mfd: sec: Remove fields not used since regmap conversion
  watchdog: Kontron PLD watchdog timer driver
  mfd: max8998: Add support for Device Tree
  regulator: max8998: Use arrays for specifying voltages in platform data
  mfd: max8998: Add irq domain support
  regulator: palmas: Add TPS659038 support
  mfd: Kontron PLD mfd driver
  mfd: palmas: Add TPS659038 PMIC support
  mfd: palmas: Add SMPS10_BOOST feature
  mfd: palmas: Check if irq is valid
  mfd: lpc_ich: iTCO_wdt patch for Intel Coleto Creek DeviceIDs
  mfd: twl-core: Change TWL6025 references to TWL6032
  mfd: davinci_voicecodec: Fix build breakage
  mfd: vexpress: Make the driver optional for arm and arm64
  mfd: htc-egpio: Use devm_ioremap_nocache() instead of ioremap_nocache()
  mfd: davinci_voicecodec: Convert to use devm_* APIs
  mfd: twl4030-power: Fix relocking on error
  ...

13 files changed, 194 insertions, 46 deletions

diff --git a/include/linux/mfd/88pm80x.h b/include/linux/mfd/88pm80x.h
index e94537befabd..97cb283cc8e1 100644
--- a/include/linux/mfd/88pm80x.h
+++ b/include/linux/mfd/88pm80x.h
@@ -17,7 +17,6 @@
 #include <linux/regmap.h>
 #include <linux/atomic.h>
 
-#define PM80X_VERSION_MASK              (0xFF)  /* 80X chip ID mask */
 enum {
         CHIP_INVALID = 0,
         CHIP_PM800,
@@ -299,8 +298,7 @@ struct pm80x_chip {
         struct regmap *regmap;
         struct regmap_irq_chip *regmap_irq_chip;
         struct regmap_irq_chip_data *irq_data;
-        unsigned char version;
-        int id;
+        int type;
         int irq;
         int irq_mode;
         unsigned long wu_flag;
@@ -309,8 +307,14 @@ struct pm80x_chip {
 
 struct pm80x_platform_data {
         struct pm80x_rtc_pdata *rtc;
-        unsigned short power_page_addr; /* power page I2C address */
-        unsigned short gpadc_page_addr; /* gpadc page I2C address */
+        /*
+         * For the regulator not defined, set regulators[not_defined] to be
+         * NULL. num_regulators are the number of regulators supposed to be
+         * initialized. If all regulators are not defined, set num_regulators
+         * to be 0.
+         */
+        struct regulator_init_data *regulators[PM800_ID_RG_MAX];
+        unsigned int num_regulators;
         int irq_mode;           /* Clear interrupt by read/write(0/1) */
         int batt_det;           /* enable/disable */
         int (*plat_config)(struct pm80x_chip *chip,
@@ -363,7 +367,6 @@ static inline int pm80x_dev_resume(struct device *dev)
 }
 #endif
 
-extern int pm80x_init(struct i2c_client *client,
-                      const struct i2c_device_id *id);
+extern int pm80x_init(struct i2c_client *client);
 extern int pm80x_deinit(void);
 #endif /* __LINUX_MFD_88PM80X_H */
diff --git a/include/linux/mfd/abx500/ab8500.h b/include/linux/mfd/abx500/ab8500.h
index 0390d5943ed6..f4acd898dac9 100644
--- a/include/linux/mfd/abx500/ab8500.h
+++ b/include/linux/mfd/abx500/ab8500.h
@@ -291,6 +291,8 @@ enum ab8500_version {
 #define AB8540_INT_FSYNC2R              213
 #define AB8540_INT_BITCLK2F             214
 #define AB8540_INT_BITCLK2R             215
+/* ab8540_irq_regoffset[27] -> IT[Source|Latch|Mask]33 */
+#define AB8540_INT_RTC_1S               216
 
 /*
  * AB8500_AB9540_NR_IRQS is used when configuring the IRQ numbers for the
diff --git a/include/linux/mfd/arizona/core.h b/include/linux/mfd/arizona/core.h
index f797bb9b8b56..5cf8b91ce996 100644
--- a/include/linux/mfd/arizona/core.h
+++ b/include/linux/mfd/arizona/core.h
@@ -23,6 +23,7 @@
 enum arizona_type {
         WM5102 = 1,
         WM5110 = 2,
+        WM8997 = 3,
 };
 
 #define ARIZONA_IRQ_GP1                    0
@@ -121,5 +122,6 @@ int arizona_set_irq_wake(struct arizona *arizona, int irq, int on);
 
 int wm5102_patch(struct arizona *arizona);
 int wm5110_patch(struct arizona *arizona);
+int wm8997_patch(struct arizona *arizona);
 
 #endif
diff --git a/include/linux/mfd/davinci_voicecodec.h b/include/linux/mfd/davinci_voicecodec.h
index 7dd6524d2aac..13a1ee95a233 100644
--- a/include/linux/mfd/davinci_voicecodec.h
+++ b/include/linux/mfd/davinci_voicecodec.h
@@ -28,6 +28,8 @@
 #include <linux/mfd/core.h>
 #include <linux/platform_data/edma.h>
 
+#include <mach/hardware.h>
+
 /*
  * Register values.
  */
@@ -111,8 +113,6 @@ struct davinci_vc {
 
         /* Memory resources */
         void __iomem *base;
-        resource_size_t pbase;
-        size_t base_size;
 
         /* MFD cells */
         struct mfd_cell cells[DAVINCI_VC_CELLS];
diff --git a/include/linux/mfd/kempld.h b/include/linux/mfd/kempld.h
new file mode 100644
index 000000000000..b911ef3add03
--- /dev/null
+++ b/include/linux/mfd/kempld.h
@@ -0,0 +1,125 @@
+/*
+ * Kontron PLD driver definitions
+ *
+ * Copyright (c) 2010-2012 Kontron Europe GmbH
+ * Author: Michael Brunner <michael.brunner@kontron.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License 2 as published
+ * by the Free Software Foundation.
+ */
+
+#ifndef _LINUX_MFD_KEMPLD_H_
+#define _LINUX_MFD_KEMPLD_H_
+
+/* kempld register definitions */
+#define KEMPLD_IOINDEX                  0xa80
+#define KEMPLD_IODATA                   0xa81
+#define KEMPLD_MUTEX_KEY                0x80
+#define KEMPLD_VERSION                  0x00
+#define KEMPLD_VERSION_LSB              0x00
+#define KEMPLD_VERSION_MSB              0x01
+#define KEMPLD_VERSION_GET_MINOR(x)     (x & 0x1f)
+#define KEMPLD_VERSION_GET_MAJOR(x)     ((x >> 5) & 0x1f)
+#define KEMPLD_VERSION_GET_NUMBER(x)    ((x >> 10) & 0xf)
+#define KEMPLD_VERSION_GET_TYPE(x)      ((x >> 14) & 0x3)
+#define KEMPLD_BUILDNR                  0x02
+#define KEMPLD_BUILDNR_LSB              0x02
+#define KEMPLD_BUILDNR_MSB              0x03
+#define KEMPLD_FEATURE                  0x04
+#define KEMPLD_FEATURE_LSB              0x04
+#define KEMPLD_FEATURE_MSB              0x05
+#define KEMPLD_FEATURE_BIT_I2C          (1 << 0)
+#define KEMPLD_FEATURE_BIT_WATCHDOG     (1 << 1)
+#define KEMPLD_FEATURE_BIT_GPIO         (1 << 2)
+#define KEMPLD_FEATURE_MASK_UART        (7 << 3)
+#define KEMPLD_FEATURE_BIT_NMI          (1 << 8)
+#define KEMPLD_FEATURE_BIT_SMI          (1 << 9)
+#define KEMPLD_FEATURE_BIT_SCI          (1 << 10)
+#define KEMPLD_SPEC                     0x06
+#define KEMPLD_SPEC_GET_MINOR(x)        (x & 0x0f)
+#define KEMPLD_SPEC_GET_MAJOR(x)        ((x >> 4) & 0x0f)
+#define KEMPLD_IRQ_GPIO                 0x35
+#define KEMPLD_IRQ_I2C                  0x36
+#define KEMPLD_CFG                      0x37
+#define KEMPLD_CFG_GPIO_I2C_MUX         (1 << 0)
+#define KEMPLD_CFG_BIOS_WP              (1 << 7)
+
+#define KEMPLD_CLK                      33333333
+
+#define KEMPLD_TYPE_RELEASE             0x0
+#define KEMPLD_TYPE_DEBUG               0x1
+#define KEMPLD_TYPE_CUSTOM              0x2
+
+/**
+ * struct kempld_info - PLD device information structure
+ * @major:      PLD major revision
+ * @minor:      PLD minor revision
+ * @buildnr:    PLD build number
+ * @number:     PLD board specific index
+ * @type:       PLD type
+ * @spec_major: PLD FW specification major revision
+ * @spec_minor: PLD FW specification minor revision
+ */
+struct kempld_info {
+        unsigned int major;
+        unsigned int minor;
+        unsigned int buildnr;
+        unsigned int number;
+        unsigned int type;
+        unsigned int spec_major;
+        unsigned int spec_minor;
+};
+
+/**
+ * struct kempld_device_data - Internal representation of the PLD device
+ * @io_base:            Pointer to the IO memory
+ * @io_index:           Pointer to the IO index register
+ * @io_data:            Pointer to the IO data register
+ * @pld_clock:          PLD clock frequency
+ * @feature_mask:       PLD feature mask
+ * @dev:                Pointer to kernel device structure
+ * @info:               KEMPLD info structure
+ * @lock:               PLD mutex
+ */
+struct kempld_device_data {
+        void __iomem            *io_base;
+        void __iomem            *io_index;
+        void __iomem            *io_data;
+        u32                     pld_clock;
+        u32                     feature_mask;
+        struct device           *dev;
+        struct kempld_info      info;
+        struct mutex            lock;
+};
+
+/**
+ * struct kempld_platform_data - PLD hardware configuration structure
+ * @pld_clock:                  PLD clock frequency
+ * @gpio_base                   GPIO base pin number
+ * @ioresource:                 IO addresses of the PLD
+ * @get_mutex:                  PLD specific get_mutex callback
+ * @release_mutex:              PLD specific release_mutex callback
+ * @get_info:                   PLD specific get_info callback
+ * @register_cells:             PLD specific register_cells callback
+ */
+struct kempld_platform_data {
+        u32                             pld_clock;
+        int                             gpio_base;
+        struct resource                 *ioresource;
+        void (*get_hardware_mutex)      (struct kempld_device_data *);
+        void (*release_hardware_mutex)  (struct kempld_device_data *);
+        int (*get_info)                 (struct kempld_device_data *);
+        int (*register_cells)           (struct kempld_device_data *);
+};
+
+extern void kempld_get_mutex(struct kempld_device_data *pld);
+extern void kempld_release_mutex(struct kempld_device_data *pld);
+extern u8 kempld_read8(struct kempld_device_data *pld, u8 index);
+extern void kempld_write8(struct kempld_device_data *pld, u8 index, u8 data);
+extern u16 kempld_read16(struct kempld_device_data *pld, u8 index);
+extern void kempld_write16(struct kempld_device_data *pld, u8 index, u16 data);
+extern u32 kempld_read32(struct kempld_device_data *pld, u8 index);
+extern void kempld_write32(struct kempld_device_data *pld, u8 index, u32 data);
+
+#endif /* _LINUX_MFD_KEMPLD_H_ */
diff --git a/include/linux/mfd/max8998-private.h b/include/linux/mfd/max8998-private.h
index effa5d3b96ae..84844e0a5704 100644
--- a/include/linux/mfd/max8998-private.h
+++ b/include/linux/mfd/max8998-private.h
@@ -132,9 +132,12 @@ enum {
 
 #define MAX8998_ENRAMP                  (1 << 4)
 
+struct irq_domain;
+
 /**
  * struct max8998_dev - max8998 master device for sub-drivers
  * @dev: master device of the chip (can be used to access platform data)
+ * @pdata: platform data for the driver and subdrivers
  * @i2c: i2c client private data for regulator
  * @rtc: i2c client private data for rtc
  * @iolock: mutex for serializing io access
@@ -148,12 +151,14 @@ enum {
  */
 struct max8998_dev {
         struct device *dev;
+        struct max8998_platform_data *pdata;
         struct i2c_client *i2c;
         struct i2c_client *rtc;
         struct mutex iolock;
         struct mutex irqlock;
 
-        int irq_base;
+        unsigned int irq_base;
+        struct irq_domain *irq_domain;
         int irq;
         int ono;
         u8 irq_masks_cur[MAX8998_NUM_IRQ_REGS];
diff --git a/include/linux/mfd/max8998.h b/include/linux/mfd/max8998.h
index 6823548d0c0a..e3956a654cbc 100644
--- a/include/linux/mfd/max8998.h
+++ b/include/linux/mfd/max8998.h
@@ -58,10 +58,12 @@ enum {
  * max8998_regulator_data - regulator data
  * @id: regulator id
  * @initdata: regulator init data (contraints, supplies, ...)
+ * @reg_node: DT node of regulator (unused on non-DT platforms)
  */
 struct max8998_regulator_data {
         int                             id;
         struct regulator_init_data      *initdata;
+        struct device_node              *reg_node;
 };
 
 /**
@@ -73,12 +75,8 @@ struct max8998_regulator_data {
  * @buck_voltage_lock: Do NOT change the values of the following six
  *   registers set by buck?_voltage?. The voltage of BUCK1/2 cannot
  *   be other than the preset values.
- * @buck1_voltage1: BUCK1 DVS mode 1 voltage register
- * @buck1_voltage2: BUCK1 DVS mode 2 voltage register
- * @buck1_voltage3: BUCK1 DVS mode 3 voltage register
- * @buck1_voltage4: BUCK1 DVS mode 4 voltage register
- * @buck2_voltage1: BUCK2 DVS mode 1 voltage register
- * @buck2_voltage2: BUCK2 DVS mode 2 voltage register
+ * @buck1_voltage: BUCK1 DVS mode 1 voltage registers
+ * @buck2_voltage: BUCK2 DVS mode 2 voltage registers
  * @buck1_set1: BUCK1 gpio pin 1 to set output voltage
  * @buck1_set2: BUCK1 gpio pin 2 to set output voltage
  * @buck1_default_idx: Default for BUCK1 gpio pin 1, 2
@@ -100,15 +98,11 @@ struct max8998_regulator_data {
 struct max8998_platform_data {
         struct max8998_regulator_data   *regulators;
         int                             num_regulators;
-        int                             irq_base;
+        unsigned int                    irq_base;
         int                             ono;
         bool                            buck_voltage_lock;
-        int                             buck1_voltage1;
-        int                             buck1_voltage2;
-        int                             buck1_voltage3;
-        int                             buck1_voltage4;
-        int                             buck2_voltage1;
-        int                             buck2_voltage2;
+        int                             buck1_voltage[4];
+        int                             buck2_voltage[2];
         int                             buck1_set1;
         int                             buck1_set2;
         int                             buck1_default_idx;
diff --git a/include/linux/mfd/palmas.h b/include/linux/mfd/palmas.h
index 9b81b2bdc46b..1a8dd7afe084 100644
--- a/include/linux/mfd/palmas.h
+++ b/include/linux/mfd/palmas.h
@@ -34,6 +34,19 @@
                         ((a) == PALMAS_CHIP_ID))
 #define is_palmas_charger(a) ((a) == PALMAS_CHIP_CHARGER_ID)
 
+/**
+ * Palmas PMIC feature types
+ *
+ * PALMAS_PMIC_FEATURE_SMPS10_BOOST - used when the PMIC provides SMPS10_BOOST
+ *      regulator.
+ *
+ * PALMAS_PMIC_HAS(b, f) - macro to check if a bandgap device is capable of a
+ *      specific feature (above) or not. Return non-zero, if yes.
+ */
+#define PALMAS_PMIC_FEATURE_SMPS10_BOOST        BIT(0)
+#define PALMAS_PMIC_HAS(b, f)                   \
+                        ((b)->features & PALMAS_PMIC_FEATURE_ ## f)
+
 struct palmas_pmic;
 struct palmas_gpadc;
 struct palmas_resource;
@@ -54,6 +67,7 @@ struct palmas {
         /* Stored chip id */
         int id;
 
+        unsigned int features;
         /* IRQ Data */
         int irq;
         u32 irq_mask;
diff --git a/include/linux/mfd/rtsx_pci.h b/include/linux/mfd/rtsx_pci.h
index 86bc635f8385..7a9f7089435d 100644
--- a/include/linux/mfd/rtsx_pci.h
+++ b/include/linux/mfd/rtsx_pci.h
@@ -575,6 +575,7 @@
 
 #define CARD_PWR_CTL                    0xFD50
 #define CARD_CLK_SWITCH                 0xFD51
+#define RTL8411B_PACKAGE_MODE           0xFD51
 #define CARD_SHARE_MODE                 0xFD52
 #define CARD_DRIVE_SEL                  0xFD53
 #define CARD_STOP                       0xFD54
diff --git a/include/linux/mfd/samsung/core.h b/include/linux/mfd/samsung/core.h
index f0f4de3b4ccc..378ae8a04c6a 100644
--- a/include/linux/mfd/samsung/core.h
+++ b/include/linux/mfd/samsung/core.h
@@ -14,8 +14,6 @@
 #ifndef __LINUX_MFD_SEC_CORE_H
 #define __LINUX_MFD_SEC_CORE_H
 
-#define NUM_IRQ_REGS    4
-
 enum sec_device_type {
         S5M8751X,
         S5M8763X,
@@ -44,8 +42,6 @@ struct sec_pmic_dev {
         struct regmap *regmap;
         struct i2c_client *i2c;
         struct i2c_client *rtc;
-        struct mutex iolock;
-        struct mutex irqlock;
 
         int device_type;
         int irq_base;
@@ -53,8 +49,6 @@ struct sec_pmic_dev {
         struct regmap_irq_chip_data *irq_data;
 
         int ono;
-        u8 irq_masks_cur[NUM_IRQ_REGS];
-        u8 irq_masks_cache[NUM_IRQ_REGS];
         int type;
         bool wakeup;
 };
diff --git a/include/linux/mfd/ti_am335x_tscadc.h b/include/linux/mfd/ti_am335x_tscadc.h
index c79ad5d2f271..8d73fe29796a 100644
--- a/include/linux/mfd/ti_am335x_tscadc.h
+++ b/include/linux/mfd/ti_am335x_tscadc.h
@@ -30,8 +30,8 @@
 #define REG_IDLECONFIG          0x058
 #define REG_CHARGECONFIG        0x05C
 #define REG_CHARGEDELAY         0x060
-#define REG_STEPCONFIG(n)       (0x64 + ((n - 1) * 8))
-#define REG_STEPDELAY(n)        (0x68 + ((n - 1) * 8))
+#define REG_STEPCONFIG(n)       (0x64 + ((n) * 8))
+#define REG_STEPDELAY(n)        (0x68 + ((n) * 8))
 #define REG_FIFO0CNT            0xE4
 #define REG_FIFO0THR            0xE8
 #define REG_FIFO1CNT            0xF0
@@ -46,8 +46,6 @@
 /* Step Enable */
 #define STEPENB_MASK            (0x1FFFF << 0)
 #define STEPENB(val)            ((val) << 0)
-#define STPENB_STEPENB          STEPENB(0x1FFFF)
-#define STPENB_STEPENB_TC       STEPENB(0x1FFF)
 
 /* IRQ enable */
 #define IRQENB_HW_PEN           BIT(0)
@@ -73,8 +71,6 @@
 #define STEPCONFIG_INM_ADCREFM  STEPCONFIG_INM(8)
 #define STEPCONFIG_INP_MASK     (0xF << 19)
 #define STEPCONFIG_INP(val)     ((val) << 19)
-#define STEPCONFIG_INP_AN2      STEPCONFIG_INP(2)
-#define STEPCONFIG_INP_AN3      STEPCONFIG_INP(3)
 #define STEPCONFIG_INP_AN4      STEPCONFIG_INP(4)
 #define STEPCONFIG_INP_ADCREFM  STEPCONFIG_INP(8)
 #define STEPCONFIG_FIFO1        BIT(26)
@@ -96,7 +92,6 @@
 #define STEPCHARGE_INM_AN1      STEPCHARGE_INM(1)
 #define STEPCHARGE_INP_MASK     (0xF << 19)
 #define STEPCHARGE_INP(val)     ((val) << 19)
-#define STEPCHARGE_INP_AN1      STEPCHARGE_INP(1)
 #define STEPCHARGE_RFM_MASK     (3 << 23)
 #define STEPCHARGE_RFM(val)     ((val) << 23)
 #define STEPCHARGE_RFM_XNUR     STEPCHARGE_RFM(1)
@@ -125,22 +120,17 @@
 
 #define TSCADC_CELLS            2
 
-enum tscadc_cells {
-        TSC_CELL,
-        ADC_CELL,
-};
-
-struct mfd_tscadc_board {
-        struct tsc_data *tsc_init;
-        struct adc_data *adc_init;
-};
-
 struct ti_tscadc_dev {
         struct device *dev;
         struct regmap *regmap_tscadc;
         void __iomem *tscadc_base;
         int irq;
+        int used_cells; /* 1-2 */
+        int tsc_cell;   /* -1 if not used */
+        int adc_cell;   /* -1 if not used */
         struct mfd_cell cells[TSCADC_CELLS];
+        u32 reg_se_cache;
+        spinlock_t reg_lock;
 
         /* tsc device */
         struct titsc *tsc;
@@ -149,4 +139,15 @@ struct ti_tscadc_dev {
         struct adc_device *adc;
 };
 
+static inline struct ti_tscadc_dev *ti_tscadc_dev_get(struct platform_device *p)
+{
+        struct ti_tscadc_dev **tscadc_dev = p->dev.platform_data;
+
+        return *tscadc_dev;
+}
+
+void am335x_tsc_se_update(struct ti_tscadc_dev *tsadc);
+void am335x_tsc_se_set(struct ti_tscadc_dev *tsadc, u32 val);
+void am335x_tsc_se_clr(struct ti_tscadc_dev *tsadc, u32 val);
+
 #endif
diff --git a/include/linux/mfd/wm8994/core.h b/include/linux/mfd/wm8994/core.h
index ae5c249530b4..40854ac0ba3d 100644
--- a/include/linux/mfd/wm8994/core.h
+++ b/include/linux/mfd/wm8994/core.h
@@ -29,6 +29,7 @@ enum wm8994_type {
 
 struct regulator_dev;
 struct regulator_bulk_data;
+struct irq_domain;
 
 #define WM8994_NUM_GPIO_REGS 11
 #define WM8994_NUM_LDO_REGS   2
@@ -73,6 +74,7 @@ struct wm8994 {
 
         int irq;
         struct regmap_irq_chip_data *irq_data;
+        struct irq_domain *edge_irq;
 
         /* Used over suspend/resume */
         bool suspended;
diff --git a/include/linux/mfd/wm8994/pdata.h b/include/linux/mfd/wm8994/pdata.h
index b5046f6313a9..90c60524a496 100644
--- a/include/linux/mfd/wm8994/pdata.h
+++ b/include/linux/mfd/wm8994/pdata.h
@@ -228,6 +228,11 @@ struct wm8994_pdata {
          * lines is mastered.
          */
         int max_channels_clocked[WM8994_NUM_AIF];
+
+        /**
+         * GPIO for the IRQ pin if host only supports edge triggering
+         */
+        int irq_gpio;
 };
 
 #endif