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i2c: Add enums for i2c speed and address size

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Some drivers define their own speed enums and use their own constants for
speed. It makes sense to have a unified defition of the different speeds.

Since many controllers have to do different things for fast/high speed, it
is a good idea to have an enum for the mode.

Add these as well as an enum for the address mode.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heiko Schocher <hs@denx.de>
This commit is contained in:
Simon Glass 2020-01-23 11:48:16 -07:00 • committed by Heiko Schocher
parent 96fe11c3da
commit 7bd21b6264
1 changed files with 26 additions and 0 deletions
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26
include/i2c.h
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@ -30,6 +30,32 @@ enum dm_i2c_chip_flags {
DM_I2C_CHIP_WR_ADDRESS = 1 << 2, /* Send address for each write byte */
};
/** enum i2c_speed_mode - standard I2C speed modes */
enum i2c_speed_mode {
IC_SPEED_MODE_STANDARD,
IC_SPEED_MODE_FAST,
IC_SPEED_MODE_FAST_PLUS,
IC_SPEED_MODE_HIGH,
IC_SPEED_MODE_FAST_ULTRA,
IC_SPEED_MODE_COUNT,
};
/** enum i2c_speed_rate - standard I2C speeds in Hz */
enum i2c_speed_rate {
I2C_SPEED_STANDARD_RATE = 100000,
I2C_SPEED_FAST_RATE = 400000,
I2C_SPEED_FAST_PLUS_RATE = 1000000,
I2C_SPEED_HIGH_RATE = 3400000,
I2C_SPEED_FAST_ULTRA_RATE = 5000000,
};
/** enum i2c_address_mode - available address modes */
enum i2c_address_mode {
I2C_MODE_7_BIT,
I2C_MODE_10_BIT
};
struct udevice;
/**
* struct dm_i2c_chip - information about an i2c chip