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Commit ea279fc5 authored by Marc Reilly's avatar Marc Reilly Committed by Mark Brown
Browse files

regmap: Add support for device with 24 data bits.



Add support for devices with 24 data bits.

Signed-off-by: default avatarMarc Reilly <marc@cpdesign.com.au>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent dd775ae2
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+23 −0
Original line number Diff line number Diff line
@@ -126,6 +126,15 @@ static void regmap_format_16(void *buf, unsigned int val)
	b[0] = cpu_to_be16(val);
}

static void regmap_format_24(void *buf, unsigned int val)
{
	u8 *b = buf;

	b[0] = val >> 16;
	b[1] = val >> 8;
	b[2] = val;
}

static void regmap_format_32(void *buf, unsigned int val)
{
	__be32 *b = buf;
@@ -149,6 +158,16 @@ static unsigned int regmap_parse_16(void *buf)
	return b[0];
}

static unsigned int regmap_parse_24(void *buf)
{
	u8 *b = buf;
	unsigned int ret = b[2];
	ret |= ((unsigned int)b[1]) << 8;
	ret |= ((unsigned int)b[0]) << 16;

	return ret;
}

static unsigned int regmap_parse_32(void *buf)
{
	__be32 *b = buf;
@@ -273,6 +292,10 @@ struct regmap *regmap_init(struct device *dev,
		map->format.format_val = regmap_format_16;
		map->format.parse_val = regmap_parse_16;
		break;
	case 24:
		map->format.format_val = regmap_format_24;
		map->format.parse_val = regmap_parse_24;
		break;
	case 32:
		map->format.format_val = regmap_format_32;
		map->format.parse_val = regmap_parse_32;