mfd: Add regmap cache support for wm8350

Use the most simple possible transformation on the existing code so keep
the table sitting around, further patches in this series will delete the
existing cache code - the main purpose of this patch is to ensure that
we always have a cache for bisection.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/include/linux/mfd/wm8350/core.h b/include/linux/mfd/wm8350/core.h
index 9192b6404a73..cba9bc8f947b 100644
--- a/include/linux/mfd/wm8350/core.h
+++ b/include/linux/mfd/wm8350/core.h
@@ -17,6 +17,7 @@
 #include <linux/mutex.h>
 #include <linux/interrupt.h>
 #include <linux/completion.h>
+#include <linux/regmap.h>
 
 #include <linux/mfd/wm8350/audio.h>
 #include <linux/mfd/wm8350/gpio.h>
@@ -66,6 +67,9 @@
 
 #define WM8350_MAX_REGISTER                     0xFF
 
+#define WM8350_UNLOCK_KEY               0x0013
+#define WM8350_LOCK_KEY                 0x0000
+
 /*
  * Field Definitions.
  */
@@ -582,6 +586,7 @@
 
 #define WM8350_NUM_IRQ_REGS 7
 
+extern const struct regmap_config wm8350_regmap;
 struct wm8350_reg_access {
         u16 readable;           /* Mask of readable bits */
         u16 writable;           /* Mask of writable bits */
@@ -602,7 +607,6 @@ extern const u16 wm8352_mode2_defaults[];
 extern const u16 wm8352_mode3_defaults[];
 
 struct wm8350;
-struct regmap;
 
 struct wm8350_hwmon {
         struct platform_device *pdev;
@@ -615,6 +619,7 @@ struct wm8350 {
         /* device IO */
         struct regmap *regmap;
         u16 *reg_cache;
+        bool unlocked;
 
         struct mutex auxadc_mutex;
         struct completion auxadc_done;