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fix(usb/host): Fix reaction on High-Speed NYET packet

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In Scatter-Gather DMA mode, the USB-DWC will automatically enable
PING protocol if an OUT packet is NACKed by the High-Speed device.
The PING bit must be manually reset.
This commit is contained in:
Tomas Rezucha
2024-12-17 14:31:25 +01:00
committed by BOT
parent db968c6956
commit 875defd3b7
4 changed files with 71 additions and 92 deletions
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34
components/hal/esp32p4/include/hal/usb_dwc_ll.h
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@@ -790,23 +790,33 @@ static inline void usb_dwc_ll_hctsiz_set_qtd_list_len(volatile usb_dwc_host_chan
chan->hctsiz_reg.val = hctsiz.val;
}
static inline void usb_dwc_ll_hctsiz_init(volatile usb_dwc_host_chan_regs_t *chan)
/**
* @brief Perform PING protocol
*
* PING protocol is automatically enabled if High-Speed device responds with NYET in Scatter-Gather DMA mode.
* The application must disable PING for next transfer.
* Relevant only for OUT transfers.
*
* @param[in] chan Channel registers
* @param[in] enable true: Enable PING, false: Disable PING
*/
static inline void usb_dwc_ll_hctsiz_set_dopng(volatile usb_dwc_host_chan_regs_t *chan, bool enable)
{
usb_dwc_hctsiz_reg_t hctsiz;
hctsiz.val = chan->hctsiz_reg.val;
hctsiz.dopng = 0; //Don't do ping
/*
Set SCHED_INFO which occupies xfersize[7:0]
It is always set to 0xFF for full speed and not used in Bulk/Ctrl channels
*/
hctsiz.xfersize |= 0xFF;
chan->hctsiz_reg.val = hctsiz.val;
chan->hctsiz_reg.dopng = (uint32_t)(enable && !chan->hcchar_reg.epdir);
}
/**
* @brief Set scheduling info for Periodic channel
*
* @attention This function must be called for each periodic channel!
* @see USB-OTG databook: Table 5-47
*
* @param[in] chan Channel registers
* @param[in] tokens_per_frame HS: Number of tokens per frame FS: Must be set 8
* @param[in] offset Offset of the channel
*/
static inline void usb_dwc_ll_hctsiz_set_sched_info(volatile usb_dwc_host_chan_regs_t *chan, int tokens_per_frame, int offset)
{
// @see USB-OTG databook: Table 5-47
// This function is relevant only for HS
usb_dwc_hctsiz_reg_t hctsiz;
hctsiz.val = chan->hctsiz_reg.val;
uint8_t sched_info_val;