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i2c_emul: init i2c config

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Initialize the i2c config of the emulator based on the clock_frequency
property.

The emulator can be used without calling the i2c_configure function, but
the i2c_get_config would return an error. With this change, it is
possible to get the config prior to the i2c_configure call.

Signed-off-by: Dawid Niedzwiecki <dn@semihalf.com>
This commit is contained in:
Dawid Niedzwiecki 2022-02-15 15:24:23 +01:00 • committed by Anas Nashif
commit abb090094d
1 changed files with 7 additions and 6 deletions
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13
drivers/i2c/i2c_emul.c
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@ -20,12 +20,15 @@ LOG_MODULE_REGISTER(i2c_emul_ctlr);
#include <drivers/i2c.h> #include <drivers/i2c.h>
#include <drivers/i2c_emul.h> #include <drivers/i2c_emul.h>
#include "i2c-priv.h"
/** Working data for the device */ /** Working data for the device */
struct i2c_emul_data { struct i2c_emul_data {
/* List of struct i2c_emul associated with the device */ /* List of struct i2c_emul associated with the device */
sys_slist_t emuls; sys_slist_t emuls;
/* I2C host configuration */ /* I2C host configuration */
uint32_t config; uint32_t config;
uint32_t bitrate;
}; };
/** /**
@ -66,10 +69,6 @@ static int i2c_emul_get_config(const struct device *dev, uint32_t *dev_config)
{ {
struct i2c_emul_data *data = dev->data; struct i2c_emul_data *data = dev->data;
if (data->config == -1) {
return -EIO;
}
*dev_config = data->config; *dev_config = data->config;
return 0; return 0;
@ -115,7 +114,7 @@ static int i2c_emul_init(const struct device *dev)
rc = emul_init_for_bus_from_list(dev, list); rc = emul_init_for_bus_from_list(dev, list);
/* Set config to an uninitialized state */ /* Set config to an uninitialized state */
data->config = -1; data->config = (I2C_MODE_MASTER | i2c_map_dt_bitrate(data->bitrate));
return rc; return rc;
} }
@ -152,7 +151,9 @@ static struct i2c_driver_api i2c_emul_api = {
.children = emuls_##n, \ .children = emuls_##n, \
.num_children = ARRAY_SIZE(emuls_##n), \ .num_children = ARRAY_SIZE(emuls_##n), \
}; \ }; \
static struct i2c_emul_data i2c_emul_data_##n; \ static struct i2c_emul_data i2c_emul_data_##n = { \
.bitrate = DT_INST_PROP(n, clock_frequency), \
}; \
I2C_DEVICE_DT_INST_DEFINE(n, \ I2C_DEVICE_DT_INST_DEFINE(n, \
i2c_emul_init, \ i2c_emul_init, \
NULL, \ NULL, \