From: Xu Ziyuan xzy.xu@rock-chips.com
The total FIFO size of some SoCs may be different from the existen, this patch supports fifo size setting from platform data.
Signed-off-by: Ziyuan Xu xzy.xu@rock-chips.com
---
Changes in v4: - Rework fifo size getting and setting - Update commit message
Changes in v3: None Changes in v2: - Update detailed commit message - Modify the macro's values
drivers/usb/gadget/dwc2_udc_otg.c | 22 ++++++++++++++++------ drivers/usb/gadget/dwc2_udc_otg_regs.h | 6 +++--- include/usb/dwc2_udc.h | 3 +++ 3 files changed, 22 insertions(+), 9 deletions(-)
diff --git a/drivers/usb/gadget/dwc2_udc_otg.c b/drivers/usb/gadget/dwc2_udc_otg.c index a23278d..029927f 100644 --- a/drivers/usb/gadget/dwc2_udc_otg.c +++ b/drivers/usb/gadget/dwc2_udc_otg.c @@ -403,6 +403,7 @@ static void reconfig_usbd(struct dwc2_udc *dev) int i; unsigned int uTemp = writel(CORE_SOFT_RESET, ®->grstctl); uint32_t dflt_gusbcfg; + uint32_t rx_fifo_sz, tx_fifo_sz, np_tx_fifo_sz;
debug("Reseting OTG controller\n");
@@ -467,18 +468,27 @@ static void reconfig_usbd(struct dwc2_udc *dev) /* 10. Unmask device IN EP common interrupts*/ writel(DIEPMSK_INIT, ®->diepmsk);
+ rx_fifo_sz = RX_FIFO_SIZE; + np_tx_fifo_sz = NPTX_FIFO_SIZE; + tx_fifo_sz = PTX_FIFO_SIZE; + + if (dev->pdata->rx_fifo_sz) + rx_fifo_sz = dev->pdata->rx_fifo_sz; + if (dev->pdata->np_tx_fifo_sz) + np_tx_fifo_sz = dev->pdata->np_tx_fifo_sz; + if (dev->pdata->tx_fifo_sz) + tx_fifo_sz = dev->pdata->tx_fifo_sz; + /* 11. Set Rx FIFO Size (in 32-bit words) */ - writel(RX_FIFO_SIZE >> 2, ®->grxfsiz); + writel(rx_fifo_sz, ®->grxfsiz);
/* 12. Set Non Periodic Tx FIFO Size */ - writel((NPTX_FIFO_SIZE >> 2) << 16 | ((RX_FIFO_SIZE >> 2)) << 0, + writel((np_tx_fifo_sz << 16) | rx_fifo_sz, ®->gnptxfsiz);
for (i = 1; i < DWC2_MAX_HW_ENDPOINTS; i++) - writel((PTX_FIFO_SIZE >> 2) << 16 | - ((RX_FIFO_SIZE + NPTX_FIFO_SIZE + - PTX_FIFO_SIZE*(i-1)) >> 2) << 0, - ®->dieptxf[i-1]); + writel((rx_fifo_sz + np_tx_fifo_sz + tx_fifo_sz*(i-1)) | + tx_fifo_sz << 16, ®->dieptxf[i-1]);
/* Flush the RX FIFO */ writel(RX_FIFO_FLUSH, ®->grstctl); diff --git a/drivers/usb/gadget/dwc2_udc_otg_regs.h b/drivers/usb/gadget/dwc2_udc_otg_regs.h index 78ec90e..c94396a 100644 --- a/drivers/usb/gadget/dwc2_udc_otg_regs.h +++ b/drivers/usb/gadget/dwc2_udc_otg_regs.h @@ -130,9 +130,9 @@ struct dwc2_usbotg_reg { #define HIGH_SPEED_CONTROL_PKT_SIZE 64 #define HIGH_SPEED_BULK_PKT_SIZE 512
-#define RX_FIFO_SIZE (1024*4) -#define NPTX_FIFO_SIZE (1024*4) -#define PTX_FIFO_SIZE (1536*1) +#define RX_FIFO_SIZE (1024) +#define NPTX_FIFO_SIZE (1024) +#define PTX_FIFO_SIZE (384)
#define DEPCTL_TXFNUM_0 (0x0<<22) #define DEPCTL_TXFNUM_1 (0x1<<22) diff --git a/include/usb/dwc2_udc.h b/include/usb/dwc2_udc.h index 3ce43f8..7324d8a 100644 --- a/include/usb/dwc2_udc.h +++ b/include/usb/dwc2_udc.h @@ -20,6 +20,9 @@ struct dwc2_plat_otg_data { unsigned int usb_phy_ctrl; unsigned int usb_flags; unsigned int usb_gusbcfg; + unsigned int rx_fifo_sz; + unsigned int np_tx_fifo_sz; + unsigned int tx_fifo_sz; };
int dwc2_udc_probe(struct dwc2_plat_otg_data *pdata);