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usb_c: Fix DPM request handlers

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Processing the common DPM request handler in the
Sink DPM request handler.

Signed-off-by: Sam Hurst <sbh1187@gmail.com>
This commit is contained in:
Sam Hurst 2022-12-23 13:52:08 -08:00 • committed by Carles Cufí
commit c27a3a31d3
3 changed files with 26 additions and 10 deletions
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13
subsys/usb/usb_c/usbc_pe_common.c
View file

@ -21,7 +21,7 @@ static const struct smf_state pe_states[];
/**
* @brief Handle common DPM requests
*
* @retval True if the request was handled, else False
* @retval true if request was handled, else false
*/
bool common_dpm_requests(const struct device *dev)
{
@ -33,10 +33,11 @@ bool common_dpm_requests(const struct device *dev)
if (pe->dpm_request == REQUEST_PE_DR_SWAP) {
pe_set_state(dev, PE_DRS_SEND_SWAP);
return true;
} else if (pe->dpm_request == REQUEST_PE_SOFT_RESET_SEND) {
pe_set_state(dev, PE_SEND_SOFT_RESET);
return true;
}
return true;
}
return false;
@ -143,6 +144,9 @@ void pe_run(const struct device *dev, const int32_t dpm_request)
break;
}
/* Get any DPM Requests */
pe->dpm_request = dpm_request;
/*
* 8.3.3.3.8 PE_SNK_Hard_Reset State
* The Policy Engine Shall transition to the PE_SNK_Hard_Reset
@ -151,14 +155,11 @@ void pe_run(const struct device *dev, const int32_t dpm_request)
*/
if (dpm_request == REQUEST_PE_HARD_RESET_SEND) {
pe_set_state(dev, PE_SNK_HARD_RESET);
} else {
/* Pass the DPM request along to the state machine */
pe->dpm_request = dpm_request;
common_dpm_requests(dev);
}
/* Run state machine */
smf_run_state(SMF_CTX(pe));
break;
}
}

8
subsys/usb/usb_c/usbc_pe_common_internal.h
View file

@ -310,4 +310,12 @@ bool policy_is_snk_at_default(const struct device *dev);
*/
void policy_get_snk_cap(const struct device *dev, uint32_t **pdos, int *num_pdos);
/**
* @brief Handle common DPM requests
*
* @param dev Pointer to the device structure for the driver instance
* @retval true if request was handled, else false
*/
bool common_dpm_requests(const struct device *dev);
#endif /* ZEPHYR_SUBSYS_USBC_PE_COMMON_INTERNAL_H_ */

15
subsys/usb/usb_c/usbc_pe_snk_states.c
View file

@ -18,21 +18,28 @@ LOG_MODULE_DECLARE(usbc_stack, CONFIG_USBC_STACK_LOG_LEVEL);
/**
* @brief Handle sink-specific DPM requests
*/
bool sink_dpm_requests(const struct device *dev)
void sink_dpm_requests(const struct device *dev)
{
struct usbc_port_data *data = dev->data;
struct policy_engine *pe = data->pe;
/*
* Handle any common DPM Requests
*/
if (common_dpm_requests(dev)) {
return;
}
/*
* Handle Sink DPM Requests
*/
if (pe->dpm_request > REQUEST_TC_END) {
atomic_set_bit(pe->flags, PE_FLAGS_DPM_INITIATED_AMS);
if (pe->dpm_request == REQUEST_PE_GET_SRC_CAPS) {
pe_set_state(dev, PE_SNK_GET_SOURCE_CAP);
}
return true;
}
return false;
}
/**