regmap: Implement support for 32 bit registers and values
Mark Brown [Fri, 17 Feb 2012 23:58:25 +0000 (15:58 -0800)]
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

drivers/base/regmap/regcache.c
drivers/base/regmap/regmap.c

index 7e18d1e..69d4c9c 100644 (file)
@@ -372,6 +372,13 @@ bool regcache_set_val(void *base, unsigned int idx,
                cache[idx] = val;
                break;
        }
+       case 4: {
+               u32 *cache = base;
+               if (cache[idx] == val)
+                       return true;
+               cache[idx] = val;
+               break;
+       }
        default:
                BUG();
        }
@@ -393,6 +400,10 @@ unsigned int regcache_get_val(const void *base, unsigned int idx,
                const u16 *cache = base;
                return cache[idx];
        }
+       case 4: {
+               const u32 *cache = base;
+               return cache[idx];
+       }
        default:
                BUG();
        }
index b7198f5..73a8111 100644 (file)
@@ -125,6 +125,13 @@ static void regmap_format_16(void *buf, unsigned int val)
        b[0] = cpu_to_be16(val);
 }
 
+static void regmap_format_32(void *buf, unsigned int val)
+{
+       __be32 *b = buf;
+
+       b[0] = cpu_to_be32(val);
+}
+
 static unsigned int regmap_parse_8(void *buf)
 {
        u8 *b = buf;
@@ -141,6 +148,15 @@ static unsigned int regmap_parse_16(void *buf)
        return b[0];
 }
 
+static unsigned int regmap_parse_32(void *buf)
+{
+       __be32 *b = buf;
+
+       b[0] = be32_to_cpu(b[0]);
+
+       return b[0];
+}
+
 /**
  * regmap_init(): Initialise register map
  *
@@ -239,6 +255,10 @@ struct regmap *regmap_init(struct device *dev,
                map->format.format_reg = regmap_format_16;
                break;
 
+       case 32:
+               map->format.format_reg = regmap_format_32;
+               break;
+
        default:
                goto err_map;
        }
@@ -252,6 +272,10 @@ struct regmap *regmap_init(struct device *dev,
                map->format.format_val = regmap_format_16;
                map->format.parse_val = regmap_parse_16;
                break;
+       case 32:
+               map->format.format_val = regmap_format_32;
+               map->format.parse_val = regmap_parse_32;
+               break;
        }
 
        if (!map->format.format_write &&