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path: root/drivers/usb/dwc2/gadget.c
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Diffstat (limited to 'drivers/usb/dwc2/gadget.c')
-rw-r--r--drivers/usb/dwc2/gadget.c94
1 files changed, 26 insertions, 68 deletions
diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
index af46adfae41c..4cd6403a7566 100644
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -186,9 +186,10 @@ static void dwc2_hsotg_ctrl_epint(struct dwc2_hsotg *hsotg,
*/
static void dwc2_hsotg_init_fifo(struct dwc2_hsotg *hsotg)
{
- unsigned int ep;
+ unsigned int fifo;
unsigned int addr;
int timeout;
+ u32 dptxfsizn;
u32 val;
/* Reset fifo map if not correctly cleared during previous session */
@@ -216,16 +217,16 @@ static void dwc2_hsotg_init_fifo(struct dwc2_hsotg *hsotg)
* them to endpoints dynamically according to maxpacket size value of
* given endpoint.
*/
- for (ep = 1; ep < MAX_EPS_CHANNELS; ep++) {
- if (!hsotg->g_tx_fifo_sz[ep])
- continue;
- val = addr;
- val |= hsotg->g_tx_fifo_sz[ep] << FIFOSIZE_DEPTH_SHIFT;
- WARN_ONCE(addr + hsotg->g_tx_fifo_sz[ep] > hsotg->fifo_mem,
- "insufficient fifo memory");
- addr += hsotg->g_tx_fifo_sz[ep];
+ for (fifo = 1; fifo < MAX_EPS_CHANNELS; fifo++) {
+ dptxfsizn = dwc2_readl(hsotg->regs + DPTXFSIZN(fifo));
+
+ val = (dptxfsizn & FIFOSIZE_DEPTH_MASK) | addr;
+ addr += dptxfsizn >> FIFOSIZE_DEPTH_SHIFT;
+
+ if (addr > hsotg->fifo_mem)
+ break;
- dwc2_writel(val, hsotg->regs + DPTXFSIZN(ep));
+ dwc2_writel(val, hsotg->regs + DPTXFSIZN(fifo));
}
/*
@@ -388,7 +389,8 @@ static int dwc2_hsotg_write_fifo(struct dwc2_hsotg *hsotg,
return -ENOSPC;
}
} else if (hsotg->dedicated_fifos && hs_ep->index != 0) {
- can_write = dwc2_readl(hsotg->regs + DTXFSTS(hs_ep->index));
+ can_write = dwc2_readl(hsotg->regs +
+ DTXFSTS(hs_ep->fifo_index));
can_write &= 0xffff;
can_write *= 4;
@@ -2432,7 +2434,7 @@ static void kill_all_requests(struct dwc2_hsotg *hsotg,
if (!hsotg->dedicated_fifos)
return;
- size = (dwc2_readl(hsotg->regs + DTXFSTS(ep->index)) & 0xffff) * 4;
+ size = (dwc2_readl(hsotg->regs + DTXFSTS(ep->fifo_index)) & 0xffff) * 4;
if (size < ep->fifo_size)
dwc2_hsotg_txfifo_flush(hsotg, ep->fifo_index);
}
@@ -3041,22 +3043,11 @@ static int dwc2_hsotg_ep_enable(struct usb_ep *ep,
break;
}
- /* If fifo is already allocated for this ep */
- if (hs_ep->fifo_index) {
- size = hs_ep->ep.maxpacket * hs_ep->mc;
- /* If bigger fifo is required deallocate current one */
- if (size > hs_ep->fifo_size) {
- hsotg->fifo_map &= ~(1 << hs_ep->fifo_index);
- hs_ep->fifo_index = 0;
- hs_ep->fifo_size = 0;
- }
- }
-
/*
* if the hardware has dedicated fifos, we must give each IN EP
* a unique tx-fifo even if it is non-periodic.
*/
- if (dir_in && hsotg->dedicated_fifos && !hs_ep->fifo_index) {
+ if (dir_in && hsotg->dedicated_fifos) {
u32 fifo_index = 0;
u32 fifo_size = UINT_MAX;
size = hs_ep->ep.maxpacket*hs_ep->mc;
@@ -3129,10 +3120,6 @@ static int dwc2_hsotg_ep_disable(struct usb_ep *ep)
spin_lock_irqsave(&hsotg->lock, flags);
- hsotg->fifo_map &= ~(1<<hs_ep->fifo_index);
- hs_ep->fifo_index = 0;
- hs_ep->fifo_size = 0;
-
ctrl = dwc2_readl(hsotg->regs + epctrl_reg);
ctrl &= ~DXEPCTL_EPENA;
ctrl &= ~DXEPCTL_USBACTEP;
@@ -3147,6 +3134,10 @@ static int dwc2_hsotg_ep_disable(struct usb_ep *ep)
/* terminate all requests with shutdown */
kill_all_requests(hsotg, hs_ep, -ESHUTDOWN);
+ hsotg->fifo_map &= ~(1 << hs_ep->fifo_index);
+ hs_ep->fifo_index = 0;
+ hs_ep->fifo_size = 0;
+
spin_unlock_irqrestore(&hsotg->lock, flags);
return 0;
}
@@ -3475,8 +3466,11 @@ static int dwc2_hsotg_udc_start(struct usb_gadget *gadget,
otg_set_peripheral(hsotg->uphy->otg, &hsotg->gadget);
spin_lock_irqsave(&hsotg->lock, flags);
- dwc2_hsotg_init(hsotg);
- dwc2_hsotg_core_init_disconnected(hsotg, false);
+ if (dwc2_hw_is_device(hsotg)) {
+ dwc2_hsotg_init(hsotg);
+ dwc2_hsotg_core_init_disconnected(hsotg, false);
+ }
+
hsotg->enabled = 0;
spin_unlock_irqrestore(&hsotg->lock, flags);
@@ -3813,36 +3807,10 @@ static void dwc2_hsotg_dump(struct dwc2_hsotg *hsotg)
static void dwc2_hsotg_of_probe(struct dwc2_hsotg *hsotg)
{
struct device_node *np = hsotg->dev->of_node;
- u32 len = 0;
- u32 i = 0;
/* Enable dma if requested in device tree */
hsotg->g_using_dma = of_property_read_bool(np, "g-use-dma");
- /*
- * Register TX periodic fifo size per endpoint.
- * EP0 is excluded since it has no fifo configuration.
- */
- if (!of_find_property(np, "g-tx-fifo-size", &len))
- goto rx_fifo;
-
- len /= sizeof(u32);
-
- /* Read tx fifo sizes other than ep0 */
- if (of_property_read_u32_array(np, "g-tx-fifo-size",
- &hsotg->g_tx_fifo_sz[1], len))
- goto rx_fifo;
-
- /* Add ep0 */
- len++;
-
- /* Make remaining TX fifos unavailable */
- if (len < MAX_EPS_CHANNELS) {
- for (i = len; i < MAX_EPS_CHANNELS; i++)
- hsotg->g_tx_fifo_sz[i] = 0;
- }
-
-rx_fifo:
/* Register RX fifo size */
of_property_read_u32(np, "g-rx-fifo-size", &hsotg->g_rx_fifo_sz);
@@ -3864,13 +3832,10 @@ int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq)
struct device *dev = hsotg->dev;
int epnum;
int ret;
- int i;
- u32 p_tx_fifo[] = DWC2_G_P_LEGACY_TX_FIFO_SIZE;
/* Initialize to legacy fifo configuration values */
hsotg->g_rx_fifo_sz = 2048;
hsotg->g_np_g_tx_fifo_sz = 1024;
- memcpy(&hsotg->g_tx_fifo_sz[1], p_tx_fifo, sizeof(p_tx_fifo));
/* Device tree specific probe */
dwc2_hsotg_of_probe(hsotg);
@@ -3888,9 +3853,6 @@ int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq)
dev_dbg(dev, "NonPeriodic TXFIFO size: %d\n",
hsotg->g_np_g_tx_fifo_sz);
dev_dbg(dev, "RXFIFO size: %d\n", hsotg->g_rx_fifo_sz);
- for (i = 0; i < MAX_EPS_CHANNELS; i++)
- dev_dbg(dev, "Periodic TXFIFO%2d size: %d\n", i,
- hsotg->g_tx_fifo_sz[i]);
hsotg->gadget.max_speed = USB_SPEED_HIGH;
hsotg->gadget.ops = &dwc2_hsotg_gadget_ops;
@@ -3908,17 +3870,13 @@ int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq)
hsotg->ctrl_buff = devm_kzalloc(hsotg->dev,
DWC2_CTRL_BUFF_SIZE, GFP_KERNEL);
- if (!hsotg->ctrl_buff) {
- dev_err(dev, "failed to allocate ctrl request buff\n");
+ if (!hsotg->ctrl_buff)
return -ENOMEM;
- }
hsotg->ep0_buff = devm_kzalloc(hsotg->dev,
DWC2_CTRL_BUFF_SIZE, GFP_KERNEL);
- if (!hsotg->ep0_buff) {
- dev_err(dev, "failed to allocate ctrl reply buff\n");
+ if (!hsotg->ep0_buff)
return -ENOMEM;
- }
ret = devm_request_irq(hsotg->dev, irq, dwc2_hsotg_irq, IRQF_SHARED,
dev_name(hsotg->dev), hsotg);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-16 20:52:19 +0100