1 files changed, 111 insertions, 0 deletions
diff --git a/drivers/staging/sm750fb/sm750_help.h b/drivers/staging/sm750fb/sm750_help.h
new file mode 100644
index 000000000000..e0128d2a9ead
--- /dev/null
+++ b/drivers/staging/sm750fb/sm750_help.h
@@ -0,0 +1,111 @@
+#ifndef LYNX_HELP_H__
+#define LYNX_HELP_H__
+/*****************************************************************************\
+ *                                FIELD MACROS                               *
+\*****************************************************************************/
+
+#define _LSB(f)             (0 ? f)
+#define _MSB(f)             (1 ? f)
+#define _COUNT(f)           (_MSB(f) - _LSB(f) + 1)
+
+#define RAW_MASK(f)         (0xFFFFFFFF >> (32 - _COUNT(f)))
+#define GET_MASK(f)         (RAW_MASK(f) << _LSB(f))
+#define GET_FIELD(d,f)      (((d) >> _LSB(f)) & RAW_MASK(f))
+#define TEST_FIELD(d,f,v)   (GET_FIELD(d,f) == f ## _ ## v)
+#define SET_FIELD(d,f,v)    (((d) & ~GET_MASK(f)) | \
+                            (((f ## _ ## v) & RAW_MASK(f)) << _LSB(f)))
+#define SET_FIELDV(d,f,v)   (((d) & ~GET_MASK(f)) | \
+                            (((v) & RAW_MASK(f)) << _LSB(f)))
+
+
+////////////////////////////////////////////////////////////////////////////////
+//                                                                            //
+// Internal macros                                                            //
+//                                                                            //
+////////////////////////////////////////////////////////////////////////////////
+
+#define _F_START(f)             (0 ? f)
+#define _F_END(f)               (1 ? f)
+#define _F_SIZE(f)              (1 + _F_END(f) - _F_START(f))
+#define _F_MASK(f)              (((1 << _F_SIZE(f)) - 1) << _F_START(f))
+#define _F_NORMALIZE(v, f)      (((v) & _F_MASK(f)) >> _F_START(f))
+#define _F_DENORMALIZE(v, f)    (((v) << _F_START(f)) & _F_MASK(f))
+
+
+////////////////////////////////////////////////////////////////////////////////
+//                                                                            //
+// Global macros                                                              //
+//                                                                            //
+////////////////////////////////////////////////////////////////////////////////
+
+#define FIELD_GET(x, reg, field) \
+( \
+    _F_NORMALIZE((x), reg ## _ ## field) \
+)
+
+#define FIELD_SET(x, reg, field, value) \
+( \
+    (x & ~_F_MASK(reg ## _ ## field)) \
+    | _F_DENORMALIZE(reg ## _ ## field ## _ ## value, reg ## _ ## field) \
+)
+
+#define FIELD_VALUE(x, reg, field, value) \
+( \
+    (x & ~_F_MASK(reg ## _ ## field)) \
+    | _F_DENORMALIZE(value, reg ## _ ## field) \
+)
+
+#define FIELD_CLEAR(reg, field) \
+( \
+    ~ _F_MASK(reg ## _ ## field) \
+)
+
+
+////////////////////////////////////////////////////////////////////////////////
+//                                                                            //
+// Field Macros                                                               //
+//                                                                            //
+////////////////////////////////////////////////////////////////////////////////
+
+#define FIELD_START(field)              (0 ? field)
+#define FIELD_END(field)                (1 ? field)
+#define FIELD_SIZE(field)               (1 + FIELD_END(field) - FIELD_START(field))
+#define FIELD_MASK(field)               (((1 << (FIELD_SIZE(field)-1)) | ((1 << (FIELD_SIZE(field)-1)) - 1)) << FIELD_START(field))
+#define FIELD_NORMALIZE(reg, field)     (((reg) & FIELD_MASK(field)) >> FIELD_START(field))
+#define FIELD_DENORMALIZE(field, value) (((value) << FIELD_START(field)) & FIELD_MASK(field))
+
+#define FIELD_INIT(reg, field, value)   FIELD_DENORMALIZE(reg ## _ ## field, \
+                                                          reg ## _ ## field ## _ ## value)
+#define FIELD_INIT_VAL(reg, field, value) \
+                                        (FIELD_DENORMALIZE(reg ## _ ## field, value))
+#define FIELD_VAL_SET(x, r, f, v)       x = x & ~FIELD_MASK(r ## _ ## f) \
+                                              | FIELD_DENORMALIZE(r ## _ ## f, r ## _ ## f ## _ ## v)
+
+#define RGB(r, g, b) \
+( \
+    (unsigned long) (((r) << 16) | ((g) << 8) | (b)) \
+)
+
+#define RGB16(r, g, b) \
+( \
+    (unsigned short) ((((r) & 0xF8) << 8) | (((g) & 0xFC) << 3) | (((b) & 0xF8) >> 3)) \
+)
+
+static inline unsigned int absDiff(unsigned int a,unsigned int b)
+{
+	if(a<b)
+		return b-a;
+	else
+		return a-b;
+}
+
+/* n / d + 1 / 2 = (2n + d) / 2d */
+#define roundedDiv(num,denom)	((2 * (num) + (denom)) / (2 * (denom)))
+#define MB(x) ((x)<<20)
+#define KB(x) ((x)<<10)
+#define MHz(x) ((x) * 1000000)
+
+
+
+
+#endif