usb: ehci-atmel: Remove unnecessary clock calling

[oweals/u-boot.git] / drivers / core / regmap.c

diff --git a/drivers/core/regmap.c b/drivers/core/regmap.c
index dcb1a30d5fb94655df76113c543d362f76e16513..c68bcba54f1e5cfd750ec854f5c12b1a6096b214 100644 (file)
--- a/drivers/core/regmap.c
+++ b/drivers/core/regmap.c
@@ -13,6 +13,8 @@
 #include <mapmem.h>
 #include <regmap.h>
 
+#include <asm/io.h>
+
 DECLARE_GLOBAL_DATA_PTR;
 
 static struct regmap *regmap_alloc_count(int count)
@@ -37,10 +39,24 @@ static struct regmap *regmap_alloc_count(int count)
 }
 
 #if CONFIG_IS_ENABLED(OF_PLATDATA)
-int regmap_init_mem_platdata(struct udevice *dev, fdt32_t *reg, int size,
+int regmap_init_mem_platdata(struct udevice *dev, u32 *reg, int count,
                             struct regmap **mapp)
 {
-       /* TODO(sjg@chromium.org): Implement this when needed */
+       struct regmap_range *range;
+       struct regmap *map;
+
+       map = regmap_alloc_count(count);
+       if (!map)
+               return -ENOMEM;
+
+       map->base = *reg;
+       for (range = map->range; count > 0; reg += 2, range++, count--) {
+               range->start = *reg;
+               range->size = reg[1];
+       }
+
+       *mapp = map;
+
        return 0;
 }
 #else
@@ -103,3 +119,21 @@ int regmap_uninit(struct regmap *map)
 
        return 0;
 }
+
+int regmap_read(struct regmap *map, uint offset, uint *valp)
+{
+       uint32_t *ptr = map_physmem(map->base + offset, 4, MAP_NOCACHE);
+
+       *valp = le32_to_cpu(readl(ptr));
+
+       return 0;
+}
+
+int regmap_write(struct regmap *map, uint offset, uint val)
+{
+       uint32_t *ptr = map_physmem(map->base + offset, 4, MAP_NOCACHE);
+
+       writel(cpu_to_le32(val), ptr);
+
+       return 0;
+}