From c4d08cb9b157e391bd1015871ea0950159aaf88e Mon Sep 17 00:00:00 2001 From: Marek Szyprowski Date: Mon, 2 Dec 2019 12:11:17 +0100 Subject: [PATCH] usb: dwc2_udc_otg: add bcm2835 SoC (Raspberry Pi4) support Broadcom 2835 SoC requires special conversion of physical memory addresses for DMA purpose, so add needed wrappers to dwc2_udc_otg driver. Also extend the list of compatible devices with 'brcm,bcm2835-usb' entry. This allows to use USB gadget drivers (i.e. DFU) on Raspberry Pi4 boards. Signed-off-by: Marek Szyprowski Reviewed-by: Lukasz Majewski Signed-off-by: Matthias Brugger --- drivers/usb/gadget/dwc2_udc_otg.c | 2 ++ drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c | 12 ++++++------ 2 files changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/usb/gadget/dwc2_udc_otg.c b/drivers/usb/gadget/dwc2_udc_otg.c index 35f4147840..49f342eb21 100644 --- a/drivers/usb/gadget/dwc2_udc_otg.c +++ b/drivers/usb/gadget/dwc2_udc_otg.c @@ -31,6 +31,7 @@ #include #include +#include #include #include #include @@ -1213,6 +1214,7 @@ static int dwc2_udc_otg_remove(struct udevice *dev) static const struct udevice_id dwc2_udc_otg_ids[] = { { .compatible = "snps,dwc2" }, + { .compatible = "brcm,bcm2835-usb" }, { .compatible = "st,stm32mp1-hsotg", .data = (ulong)dwc2_set_stm32mp1_hsotg_params }, {}, diff --git a/drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c b/drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c index b68c2b2686..d4fbb75cc9 100644 --- a/drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c +++ b/drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c @@ -31,7 +31,7 @@ static inline void dwc2_udc_ep0_zlp(struct dwc2_udc *dev) { u32 ep_ctrl; - writel(usb_ctrl_dma_addr, ®->in_endp[EP0_CON].diepdma); + writel(phys_to_bus((unsigned long)usb_ctrl_dma_addr), ®->in_endp[EP0_CON].diepdma); writel(DIEPT_SIZ_PKT_CNT(1), ®->in_endp[EP0_CON].dieptsiz); ep_ctrl = readl(®->in_endp[EP0_CON].diepctl); @@ -52,7 +52,7 @@ static void dwc2_udc_pre_setup(void) writel(DOEPT_SIZ_PKT_CNT(1) | sizeof(struct usb_ctrlrequest), ®->out_endp[EP0_CON].doeptsiz); - writel(usb_ctrl_dma_addr, ®->out_endp[EP0_CON].doepdma); + writel(phys_to_bus((unsigned long)usb_ctrl_dma_addr), ®->out_endp[EP0_CON].doepdma); ep_ctrl = readl(®->out_endp[EP0_CON].doepctl); writel(ep_ctrl|DEPCTL_EPENA, ®->out_endp[EP0_CON].doepctl); @@ -78,7 +78,7 @@ static inline void dwc2_ep0_complete_out(void) writel(DOEPT_SIZ_PKT_CNT(1) | sizeof(struct usb_ctrlrequest), ®->out_endp[EP0_CON].doeptsiz); - writel(usb_ctrl_dma_addr, ®->out_endp[EP0_CON].doepdma); + writel(phys_to_bus((unsigned long)usb_ctrl_dma_addr), ®->out_endp[EP0_CON].doepdma); ep_ctrl = readl(®->out_endp[EP0_CON].doepctl); writel(ep_ctrl|DEPCTL_EPENA|DEPCTL_CNAK, @@ -116,7 +116,7 @@ static int setdma_rx(struct dwc2_ep *ep, struct dwc2_request *req) (unsigned long) ep->dma_buf + ROUND(ep->len, CONFIG_SYS_CACHELINE_SIZE)); - writel((unsigned long) ep->dma_buf, ®->out_endp[ep_num].doepdma); + writel(phys_to_bus((unsigned long)ep->dma_buf), ®->out_endp[ep_num].doepdma); writel(DOEPT_SIZ_PKT_CNT(pktcnt) | DOEPT_SIZ_XFER_SIZE(length), ®->out_endp[ep_num].doeptsiz); writel(DEPCTL_EPENA|DEPCTL_CNAK|ctrl, ®->out_endp[ep_num].doepctl); @@ -164,7 +164,7 @@ static int setdma_tx(struct dwc2_ep *ep, struct dwc2_request *req) while (readl(®->grstctl) & TX_FIFO_FLUSH) ; - writel((unsigned long) ep->dma_buf, ®->in_endp[ep_num].diepdma); + writel(phys_to_bus((unsigned long)ep->dma_buf), ®->in_endp[ep_num].diepdma); writel(DIEPT_SIZ_PKT_CNT(pktcnt) | DIEPT_SIZ_XFER_SIZE(length), ®->in_endp[ep_num].dieptsiz); @@ -924,7 +924,7 @@ static int dwc2_udc_get_status(struct dwc2_udc *dev, (unsigned long) usb_ctrl + ROUND(sizeof(g_status), CONFIG_SYS_CACHELINE_SIZE)); - writel(usb_ctrl_dma_addr, ®->in_endp[EP0_CON].diepdma); + writel(phys_to_bus(usb_ctrl_dma_addr), ®->in_endp[EP0_CON].diepdma); writel(DIEPT_SIZ_PKT_CNT(1) | DIEPT_SIZ_XFER_SIZE(2), ®->in_endp[EP0_CON].dieptsiz); -- 2.25.1