From: Patrice Chotard Date: Fri, 29 Mar 2019 14:42:20 +0000 (+0100) Subject: usb: dwc2_udc_otg: Add tx_fifo_sz array support X-Git-Url: http://git.dujemihanovic.xyz/login.html?a=commitdiff_plain;h=763bb106f66c147b7d0c3046dbba66a07d7a9dd2;p=u-boot.git usb: dwc2_udc_otg: Add tx_fifo_sz array support All TX fifo size can be different, add tx_fifo_sz_array[] into dwc2_plat_otg_data to be able to set them. tx_fifo_sz_array[] is 17 Bytes long and can contains max 16 tx fifo size (synopsys IP supports max 16 IN endpoints). First entry of tx_fifo_sz_array[] is the number of valid fifo size the array contains. In case of tx_fifo_sz_array[] doesn't contains the same number of element than max hardware endpoint, display a warning message. Compatibility with board which doesn't use tx_fifo_sz_array[] (Rockchip rk322x/rk3128/rv1108/rk3288/rk3036) is kept. Signed-off-by: Patrice Chotard Signed-off-by: Patrick Delaunay Reviewed-by: Lukasz Majewski --- diff --git a/drivers/usb/gadget/dwc2_udc_otg.c b/drivers/usb/gadget/dwc2_udc_otg.c index 5c7d131a5d..106dec5d09 100644 --- a/drivers/usb/gadget/dwc2_udc_otg.c +++ b/drivers/usb/gadget/dwc2_udc_otg.c @@ -457,6 +457,7 @@ static void reconfig_usbd(struct dwc2_udc *dev) uint32_t dflt_gusbcfg; uint32_t rx_fifo_sz, tx_fifo_sz, np_tx_fifo_sz; u32 max_hw_ep; + int pdata_hw_ep; debug("Reseting OTG controller\n"); @@ -542,11 +543,20 @@ static void reconfig_usbd(struct dwc2_udc *dev) /* retrieve the number of IN Endpoints (excluding ep0) */ max_hw_ep = (readl(®->ghwcfg4) & GHWCFG4_NUM_IN_EPS_MASK) >> GHWCFG4_NUM_IN_EPS_SHIFT; + pdata_hw_ep = dev->pdata->tx_fifo_sz_nb; + + /* tx_fifo_sz_nb should equal to number of IN Endpoint */ + if (pdata_hw_ep && max_hw_ep != pdata_hw_ep) + pr_warn("Got %d hw endpoint but %d tx-fifo-size in array !!\n", + max_hw_ep, pdata_hw_ep); + + for (i = 0; i < max_hw_ep; i++) { + if (pdata_hw_ep) + tx_fifo_sz = dev->pdata->tx_fifo_sz_array[i]; - for (i = 0; i < max_hw_ep; i++) writel((rx_fifo_sz + np_tx_fifo_sz + (tx_fifo_sz * i)) | tx_fifo_sz << 16, ®->dieptxf[i]); - + } /* Flush the RX FIFO */ writel(RX_FIFO_FLUSH, ®->grstctl); while (readl(®->grstctl) & RX_FIFO_FLUSH) diff --git a/include/usb/dwc2_udc.h b/include/usb/dwc2_udc.h index 8a426b631e..369f6fbd4a 100644 --- a/include/usb/dwc2_udc.h +++ b/include/usb/dwc2_udc.h @@ -9,6 +9,7 @@ #define __DWC2_USB_GADGET #define PHY0_SLEEP (1 << 5) +#define DWC2_MAX_HW_ENDPOINTS 16 struct dwc2_plat_otg_data { void *priv; @@ -22,6 +23,8 @@ struct dwc2_plat_otg_data { unsigned int rx_fifo_sz; unsigned int np_tx_fifo_sz; unsigned int tx_fifo_sz; + unsigned int tx_fifo_sz_array[DWC2_MAX_HW_ENDPOINTS]; + unsigned char tx_fifo_sz_nb; bool force_b_session_valid; };