[PATCH 2/2] regma: Add missing little endian functions

[Tony Lindgren]

This with the longer read and write masks allow supporting more
exotic devices. For example a little endian SPI device:

static const struct regmap_config foo_regmap_config = {
        .reg_bits = 16,
        .reg_stride = 4,
        .val_bits = 16,
        .write_flag_mask = 0x8000,
        .reg_format_endian = REGMAP_ENDIAN_LITTLE,
        .val_format_endian = REGMAP_ENDIAN_LITTLE,
        ...
};

Signed-off-by: Tony Lindgren <t...@atomide.com>
---
 drivers/base/regmap/regmap.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -772,6 +772,9 @@ struct regmap *__regmap_init(struct device *dev,
                case REGMAP_ENDIAN_BIG:
                        map->format.format_reg = regmap_format_16_be;
                        break;
+               case REGMAP_ENDIAN_LITTLE:
+                       map->format.format_reg = regmap_format_16_le;
+                       break;
                case REGMAP_ENDIAN_NATIVE:
                        map->format.format_reg = regmap_format_16_native;
                        break;
@@ -791,6 +794,9 @@ struct regmap *__regmap_init(struct device *dev,
                case REGMAP_ENDIAN_BIG:
                        map->format.format_reg = regmap_format_32_be;
                        break;
+               case REGMAP_ENDIAN_LITTLE:
+                       map->format.format_reg = regmap_format_32_le;
+                       break;
                case REGMAP_ENDIAN_NATIVE:
                        map->format.format_reg = regmap_format_32_native;
                        break;
@@ -805,6 +811,9 @@ struct regmap *__regmap_init(struct device *dev,
                case REGMAP_ENDIAN_BIG:
                        map->format.format_reg = regmap_format_64_be;
                        break;
+               case REGMAP_ENDIAN_LITTLE:
+                       map->format.format_reg = regmap_format_64_le;
+                       break;
                case REGMAP_ENDIAN_NATIVE:
                        map->format.format_reg = regmap_format_64_native;
                        break;
-- 
2.9.3