diff options
| -rw-r--r-- | drivers/i2c/i2c-core-base.c | 21 | ||||
| -rw-r--r-- | include/linux/i2c.h | 3 |
2 files changed, 24 insertions, 0 deletions
diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c index c4c28b585b50..5c16083694bf 100644 --- a/drivers/i2c/i2c-core-base.c +++ b/drivers/i2c/i2c-core-base.c @@ -76,6 +76,27 @@ void i2c_transfer_trace_unreg(void) static_branch_dec(&i2c_trace_msg_key); } +const char *i2c_freq_mode_string(u32 bus_freq_hz) +{ + switch (bus_freq_hz) { + case I2C_MAX_STANDARD_MODE_FREQ: + return "Standard Mode (100 kHz)"; + case I2C_MAX_FAST_MODE_FREQ: + return "Fast Mode (400 kHz)"; + case I2C_MAX_FAST_MODE_PLUS_FREQ: + return "Fast Mode Plus (1.0 MHz)"; + case I2C_MAX_TURBO_MODE_FREQ: + return "Turbo Mode (1.4 MHz)"; + case I2C_MAX_HIGH_SPEED_MODE_FREQ: + return "High Speed Mode (3.4 MHz)"; + case I2C_MAX_ULTRA_FAST_MODE_FREQ: + return "Ultra Fast Mode (5.0 MHz)"; + default: + return "Unknown Mode"; + } +} +EXPORT_SYMBOL_GPL(i2c_freq_mode_string); + const struct i2c_device_id *i2c_match_id(const struct i2c_device_id *id, const struct i2c_client *client) { diff --git a/include/linux/i2c.h b/include/linux/i2c.h index ce473ddc0378..e5d8b9dad6bf 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -51,6 +51,9 @@ struct module; struct property_entry; #if IS_ENABLED(CONFIG_I2C) +/* Return the Frequency mode string based on the bus frequency */ +const char *i2c_freq_mode_string(u32 bus_freq_hz); + /* * The master routines are the ones normally used to transmit data to devices * on a bus (or read from them). Apart from two basic transfer functions to |