drivers: i2c: ambiq: optimize ambiq i2c device pm
This commit optimizes the device pm for ambiq i2c driver by adding pinctrl sleep/resume. Signed-off-by: Hao Luo <hluo@ambiq.com>
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1 changed files with 16 additions and 1 deletions
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@ -428,15 +428,30 @@ static DEVICE_API(i2c, i2c_ambiq_driver_api) = {
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#ifdef CONFIG_PM_DEVICE
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static int i2c_ambiq_pm_action(const struct device *dev, enum pm_device_action action)
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{
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const struct i2c_ambiq_config *config = dev->config;
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struct i2c_ambiq_data *data = dev->data;
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uint32_t ret;
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int ret;
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am_hal_sysctrl_power_state_e status;
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switch (action) {
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case PM_DEVICE_ACTION_RESUME:
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/* Move pins to active/default state */
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ret = pinctrl_apply_state(config->pcfg, PINCTRL_STATE_DEFAULT);
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if (ret < 0) {
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LOG_ERR("I2C pinctrl setup failed (%d)", ret);
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return ret;
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}
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status = AM_HAL_SYSCTRL_WAKE;
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break;
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case PM_DEVICE_ACTION_SUSPEND:
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/* Move pins to sleep state */
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ret = pinctrl_apply_state(config->pcfg, PINCTRL_STATE_SLEEP);
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if (ret == -ENOENT) {
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/* Warn but don't block suspend */
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LOG_WRN("I2C pinctrl sleep state not available ");
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} else if (ret < 0) {
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return ret;
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}
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status = AM_HAL_SYSCTRL_DEEPSLEEP;
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break;
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default:
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