mfd: Add WM8994 interrupt controller support

[karo-tx-linux.git] / include / linux / mfd / wm8994 / core.h

diff --git a/include/linux/mfd/wm8994/core.h b/include/linux/mfd/wm8994/core.h
index b06ff284674899358dd0a868ba9d82cf66abb41e..de79baee492516d6c732abf37b53ecf412b024a0 100644 (file)
--- a/include/linux/mfd/wm8994/core.h
+++ b/include/linux/mfd/wm8994/core.h
@@ -15,14 +15,38 @@
 #ifndef __MFD_WM8994_CORE_H__
 #define __MFD_WM8994_CORE_H__
 
+#include <linux/interrupt.h>
+
 struct regulator_dev;
 struct regulator_bulk_data;
 
 #define WM8994_NUM_GPIO_REGS 11
-#define WM8994_NUM_LDO_REGS 2
+#define WM8994_NUM_LDO_REGS   2
+#define WM8994_NUM_IRQ_REGS   2
+
+#define WM8994_IRQ_TEMP_SHUT           0
+#define WM8994_IRQ_MIC1_DET            1
+#define WM8994_IRQ_MIC1_SHRT           2
+#define WM8994_IRQ_MIC2_DET            3
+#define WM8994_IRQ_MIC2_SHRT           4
+#define WM8994_IRQ_FLL1_LOCK           5
+#define WM8994_IRQ_FLL2_LOCK           6
+#define WM8994_IRQ_SRC1_LOCK           7
+#define WM8994_IRQ_SRC2_LOCK           8
+#define WM8994_IRQ_AIF1DRC1_SIG_DET    9
+#define WM8994_IRQ_AIF1DRC2_SIG_DET    10
+#define WM8994_IRQ_AIF2DRC_SIG_DET     11
+#define WM8994_IRQ_FIFOS_ERR           12
+#define WM8994_IRQ_WSEQ_DONE           13
+#define WM8994_IRQ_DCS_DONE            14
+#define WM8994_IRQ_TEMP_WARN           15
+
+/* GPIOs in the chip are numbered from 1-11 */
+#define WM8994_IRQ_GPIO(x) (x + WM8994_IRQ_TEMP_WARN)
 
 struct wm8994 {
        struct mutex io_lock;
+       struct mutex irq_lock;
 
        struct device *dev;
        int (*read_dev)(struct wm8994 *wm8994, unsigned short reg,
@@ -33,6 +57,11 @@ struct wm8994 {
        void *control_data;
 
        int gpio_base;
+       int irq_base;
+
+       int irq;
+       u16 irq_masks_cur[WM8994_NUM_IRQ_REGS];
+       u16 irq_masks_cache[WM8994_NUM_IRQ_REGS];
 
        /* Used over suspend/resume */
        u16 ldo_regs[WM8994_NUM_LDO_REGS];
@@ -51,4 +80,26 @@ int wm8994_set_bits(struct wm8994 *wm8994, unsigned short reg,
 int wm8994_bulk_read(struct wm8994 *wm8994, unsigned short reg,
                     int count, u16 *buf);
 
+
+/* Helper to save on boilerplate */
+static inline int wm8994_request_irq(struct wm8994 *wm8994, int irq,
+                                    irq_handler_t handler, const char *name,
+                                    void *data)
+{
+       if (!wm8994->irq_base)
+               return -EINVAL;
+       return request_threaded_irq(wm8994->irq_base + irq, NULL, handler,
+                                   IRQF_TRIGGER_RISING, name,
+                                   data);
+}
+static inline void wm8994_free_irq(struct wm8994 *wm8994, int irq, void *data)
+{
+       if (!wm8994->irq_base)
+               return;
+       free_irq(wm8994->irq_base + irq, data);
+}
+
+int wm8994_irq_init(struct wm8994 *wm8994);
+void wm8994_irq_exit(struct wm8994 *wm8994);
+
 #endif