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path: root/drivers/usb/musb
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-rw-r--r--drivers/usb/musb/blackfin.c134
-rw-r--r--drivers/usb/musb/blackfin.h2
-rw-r--r--drivers/usb/musb/cppi_dma.c6
-rw-r--r--drivers/usb/musb/davinci.c2
-rw-r--r--drivers/usb/musb/musb_core.c16
-rw-r--r--drivers/usb/musb/musb_gadget.c13
-rw-r--r--drivers/usb/musb/musb_gadget_ep0.c14
7 files changed, 128 insertions, 59 deletions
diff --git a/drivers/usb/musb/blackfin.c b/drivers/usb/musb/blackfin.c
index fe4934d9602..ad26e656966 100644
--- a/drivers/usb/musb/blackfin.c
+++ b/drivers/usb/musb/blackfin.c
@@ -29,6 +29,8 @@ void musb_write_fifo(struct musb_hw_ep *hw_ep, u16 len, const u8 *src)
{
void __iomem *fifo = hw_ep->fifo;
void __iomem *epio = hw_ep->regs;
+ u8 epnum = hw_ep->epnum;
+ u16 dma_reg = 0;
prefetch((u8 *)src);
@@ -39,67 +41,113 @@ void musb_write_fifo(struct musb_hw_ep *hw_ep, u16 len, const u8 *src)
dump_fifo_data(src, len);
- if (unlikely((unsigned long)src & 0x01))
- outsw_8((unsigned long)fifo, src,
- len & 0x01 ? (len >> 1) + 1 : len >> 1);
- else
- outsw((unsigned long)fifo, src,
- len & 0x01 ? (len >> 1) + 1 : len >> 1);
-}
+ if (!ANOMALY_05000380 && epnum != 0) {
+ flush_dcache_range((unsigned int)src,
+ (unsigned int)(src + len));
+
+ /* Setup DMA address register */
+ dma_reg = (u16) ((u32) src & 0xFFFF);
+ bfin_write16(USB_DMA_REG(epnum, USB_DMAx_ADDR_LOW), dma_reg);
+ SSYNC();
+
+ dma_reg = (u16) (((u32) src >> 16) & 0xFFFF);
+ bfin_write16(USB_DMA_REG(epnum, USB_DMAx_ADDR_HIGH), dma_reg);
+ SSYNC();
+
+ /* Setup DMA count register */
+ bfin_write16(USB_DMA_REG(epnum, USB_DMAx_COUNT_LOW), len);
+ bfin_write16(USB_DMA_REG(epnum, USB_DMAx_COUNT_HIGH), 0);
+ SSYNC();
+
+ /* Enable the DMA */
+ dma_reg = (epnum << 4) | DMA_ENA | INT_ENA | DIRECTION;
+ bfin_write16(USB_DMA_REG(epnum, USB_DMAx_CTRL), dma_reg);
+ SSYNC();
+
+ /* Wait for compelete */
+ while (!(bfin_read_USB_DMA_INTERRUPT() & (1 << epnum)))
+ cpu_relax();
+
+ /* acknowledge dma interrupt */
+ bfin_write_USB_DMA_INTERRUPT(1 << epnum);
+ SSYNC();
+
+ /* Reset DMA */
+ bfin_write16(USB_DMA_REG(epnum, USB_DMAx_CTRL), 0);
+ SSYNC();
+ } else {
+ SSYNC();
+
+ if (unlikely((unsigned long)src & 0x01))
+ outsw_8((unsigned long)fifo, src,
+ len & 0x01 ? (len >> 1) + 1 : len >> 1);
+ else
+ outsw((unsigned long)fifo, src,
+ len & 0x01 ? (len >> 1) + 1 : len >> 1);
+ }
+}
/*
* Unload an endpoint's FIFO
*/
void musb_read_fifo(struct musb_hw_ep *hw_ep, u16 len, u8 *dst)
{
void __iomem *fifo = hw_ep->fifo;
-
-#ifdef CONFIG_BF52x
u8 epnum = hw_ep->epnum;
u16 dma_reg = 0;
- invalidate_dcache_range((unsigned int)dst,
- (unsigned int)(dst + len));
+ if (ANOMALY_05000467 && epnum != 0) {
- /* Setup DMA address register */
- dma_reg = (u16) ((u32) dst & 0xFFFF);
- bfin_write16(USB_DMA_REG(epnum, USB_DMAx_ADDR_LOW), dma_reg);
- SSYNC();
+ invalidate_dcache_range((unsigned int)dst,
+ (unsigned int)(dst + len));
- dma_reg = (u16) (((u32) dst >> 16) & 0xFFFF);
- bfin_write16(USB_DMA_REG(epnum, USB_DMAx_ADDR_HIGH), dma_reg);
- SSYNC();
+ /* Setup DMA address register */
+ dma_reg = (u16) ((u32) dst & 0xFFFF);
+ bfin_write16(USB_DMA_REG(epnum, USB_DMAx_ADDR_LOW), dma_reg);
+ SSYNC();
- /* Setup DMA count register */
- bfin_write16(USB_DMA_REG(epnum, USB_DMAx_COUNT_LOW), len);
- bfin_write16(USB_DMA_REG(epnum, USB_DMAx_COUNT_HIGH), 0);
- SSYNC();
+ dma_reg = (u16) (((u32) dst >> 16) & 0xFFFF);
+ bfin_write16(USB_DMA_REG(epnum, USB_DMAx_ADDR_HIGH), dma_reg);
+ SSYNC();
- /* Enable the DMA */
- dma_reg = (epnum << 4) | DMA_ENA | INT_ENA;
- bfin_write16(USB_DMA_REG(epnum, USB_DMAx_CTRL), dma_reg);
- SSYNC();
+ /* Setup DMA count register */
+ bfin_write16(USB_DMA_REG(epnum, USB_DMAx_COUNT_LOW), len);
+ bfin_write16(USB_DMA_REG(epnum, USB_DMAx_COUNT_HIGH), 0);
+ SSYNC();
- /* Wait for compelete */
- while (!(bfin_read_USB_DMA_INTERRUPT() & (1 << epnum)))
- cpu_relax();
+ /* Enable the DMA */
+ dma_reg = (epnum << 4) | DMA_ENA | INT_ENA;
+ bfin_write16(USB_DMA_REG(epnum, USB_DMAx_CTRL), dma_reg);
+ SSYNC();
- /* acknowledge dma interrupt */
- bfin_write_USB_DMA_INTERRUPT(1 << epnum);
- SSYNC();
+ /* Wait for compelete */
+ while (!(bfin_read_USB_DMA_INTERRUPT() & (1 << epnum)))
+ cpu_relax();
- /* Reset DMA */
- bfin_write16(USB_DMA_REG(epnum, USB_DMAx_CTRL), 0);
- SSYNC();
-#else
- if (unlikely((unsigned long)dst & 0x01))
- insw_8((unsigned long)fifo, dst,
- len & 0x01 ? (len >> 1) + 1 : len >> 1);
- else
- insw((unsigned long)fifo, dst,
- len & 0x01 ? (len >> 1) + 1 : len >> 1);
-#endif
+ /* acknowledge dma interrupt */
+ bfin_write_USB_DMA_INTERRUPT(1 << epnum);
+ SSYNC();
+ /* Reset DMA */
+ bfin_write16(USB_DMA_REG(epnum, USB_DMAx_CTRL), 0);
+ SSYNC();
+ } else {
+ SSYNC();
+ /* Read the last byte of packet with odd size from address fifo + 4
+ * to trigger 1 byte access to EP0 FIFO.
+ */
+ if (len == 1)
+ *dst = (u8)inw((unsigned long)fifo + 4);
+ else {
+ if (unlikely((unsigned long)dst & 0x01))
+ insw_8((unsigned long)fifo, dst, len >> 1);
+ else
+ insw((unsigned long)fifo, dst, len >> 1);
+
+ if (len & 0x01)
+ *(dst + len - 1) = (u8)inw((unsigned long)fifo + 4);
+ }
+ }
DBG(4, "%cX ep%d fifo %p count %d buf %p\n",
'R', hw_ep->epnum, fifo, len, dst);
diff --git a/drivers/usb/musb/blackfin.h b/drivers/usb/musb/blackfin.h
index 10b7d7584f4..bd9352a2ef2 100644
--- a/drivers/usb/musb/blackfin.h
+++ b/drivers/usb/musb/blackfin.h
@@ -69,7 +69,6 @@ static void dump_fifo_data(u8 *buf, u16 len)
#define dump_fifo_data(buf, len) do {} while (0)
#endif
-#ifdef CONFIG_BF52x
#define USB_DMA_BASE USB_DMA_INTERRUPT
#define USB_DMAx_CTRL 0x04
@@ -79,7 +78,6 @@ static void dump_fifo_data(u8 *buf, u16 len)
#define USB_DMAx_COUNT_HIGH 0x14
#define USB_DMA_REG(ep, reg) (USB_DMA_BASE + 0x20 * ep + reg)
-#endif
/* Almost 1 second */
#define TIMER_DELAY (1 * HZ)
diff --git a/drivers/usb/musb/cppi_dma.c b/drivers/usb/musb/cppi_dma.c
index ef2332a9941..a44a450c860 100644
--- a/drivers/usb/musb/cppi_dma.c
+++ b/drivers/usb/musb/cppi_dma.c
@@ -1154,8 +1154,11 @@ irqreturn_t cppi_interrupt(int irq, void *dev_id)
struct musb_hw_ep *hw_ep = NULL;
u32 rx, tx;
int i, index;
+ unsigned long flags;
cppi = container_of(musb->dma_controller, struct cppi, controller);
+ if (cppi->irq)
+ spin_lock_irqsave(&musb->lock, flags);
tibase = musb->ctrl_base;
@@ -1285,6 +1288,9 @@ irqreturn_t cppi_interrupt(int irq, void *dev_id)
/* write to CPPI EOI register to re-enable interrupts */
musb_writel(tibase, DAVINCI_CPPI_EOI_REG, 0);
+ if (cppi->irq)
+ spin_unlock_irqrestore(&musb->lock, flags);
+
return IRQ_HANDLED;
}
diff --git a/drivers/usb/musb/davinci.c b/drivers/usb/musb/davinci.c
index e16ff605c45..66913811af5 100644
--- a/drivers/usb/musb/davinci.c
+++ b/drivers/usb/musb/davinci.c
@@ -42,7 +42,7 @@
#include "musb_core.h"
#ifdef CONFIG_MACH_DAVINCI_EVM
-#define GPIO_nVBUS_DRV 144
+#define GPIO_nVBUS_DRV 160
#endif
#include "davinci.h"
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index 49f2346afad..5eb9318cff7 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -1319,7 +1319,7 @@ static int __init musb_core_init(u16 musb_type, struct musb *musb)
#endif
u8 reg;
char *type;
- char aInfo[78], aRevision[32], aDate[12];
+ char aInfo[90], aRevision[32], aDate[12];
void __iomem *mbase = musb->mregs;
int status = 0;
int i;
@@ -1521,6 +1521,14 @@ irqreturn_t musb_interrupt(struct musb *musb)
(devctl & MUSB_DEVCTL_HM) ? "host" : "peripheral",
musb->int_usb, musb->int_tx, musb->int_rx);
+#ifdef CONFIG_USB_GADGET_MUSB_HDRC
+ if (is_otg_enabled(musb) || is_peripheral_enabled(musb))
+ if (!musb->gadget_driver) {
+ DBG(5, "No gadget driver loaded\n");
+ return IRQ_HANDLED;
+ }
+#endif
+
/* the core can interrupt us for multiple reasons; docs have
* a generic interrupt flowchart to follow
*/
@@ -2139,7 +2147,7 @@ static int __init musb_probe(struct platform_device *pdev)
return musb_init_controller(dev, irq, base);
}
-static int __devexit musb_remove(struct platform_device *pdev)
+static int __exit musb_remove(struct platform_device *pdev)
{
struct musb *musb = dev_to_musb(&pdev->dev);
void __iomem *ctrl_base = musb->ctrl_base;
@@ -2214,7 +2222,7 @@ static int musb_resume_noirq(struct device *dev)
return 0;
}
-static struct dev_pm_ops musb_dev_pm_ops = {
+static const struct dev_pm_ops musb_dev_pm_ops = {
.suspend = musb_suspend,
.resume_noirq = musb_resume_noirq,
};
@@ -2231,7 +2239,7 @@ static struct platform_driver musb_driver = {
.owner = THIS_MODULE,
.pm = MUSB_DEV_PM_OPS,
},
- .remove = __devexit_p(musb_remove),
+ .remove = __exit_p(musb_remove),
.shutdown = musb_shutdown,
};
diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c
index c49b9ba025a..cbcf14a236e 100644
--- a/drivers/usb/musb/musb_gadget.c
+++ b/drivers/usb/musb/musb_gadget.c
@@ -309,7 +309,7 @@ static void txstate(struct musb *musb, struct musb_request *req)
size_t request_size;
/* setup DMA, then program endpoint CSR */
- request_size = min(request->length,
+ request_size = min_t(size_t, request->length,
musb_ep->dma->max_len);
if (request_size < musb_ep->packet_sz)
musb_ep->dma->desired_mode = 0;
@@ -319,7 +319,7 @@ static void txstate(struct musb *musb, struct musb_request *req)
use_dma = use_dma && c->channel_program(
musb_ep->dma, musb_ep->packet_sz,
musb_ep->dma->desired_mode,
- request->dma, request_size);
+ request->dma + request->actual, request_size);
if (use_dma) {
if (musb_ep->dma->desired_mode == 0) {
/*
@@ -515,12 +515,12 @@ void musb_g_tx(struct musb *musb, u8 epnum)
if (csr & MUSB_TXCSR_FIFONOTEMPTY)
return;
- if (!musb_ep->desc) {
+ request = musb_ep->desc ? next_request(musb_ep) : NULL;
+ if (!request) {
DBG(4, "%s idle now\n",
musb_ep->end_point.name);
return;
- } else
- request = next_request(musb_ep);
+ }
}
txstate(musb, to_musb_request(request));
@@ -746,6 +746,8 @@ void musb_g_rx(struct musb *musb, u8 epnum)
musb_ep_select(mbase, epnum);
request = next_request(musb_ep);
+ if (!request)
+ return;
csr = musb_readw(epio, MUSB_RXCSR);
dma = is_dma_capable() ? musb_ep->dma : NULL;
@@ -1731,6 +1733,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
spin_lock_irqsave(&musb->lock, flags);
otg_set_peripheral(musb->xceiv, &musb->g);
+ musb->xceiv->state = OTG_STATE_B_IDLE;
musb->is_active = 1;
/* FIXME this ignores the softconnect flag. Drivers are
diff --git a/drivers/usb/musb/musb_gadget_ep0.c b/drivers/usb/musb/musb_gadget_ep0.c
index 8fba3f11e47..53d06451f82 100644
--- a/drivers/usb/musb/musb_gadget_ep0.c
+++ b/drivers/usb/musb/musb_gadget_ep0.c
@@ -664,7 +664,7 @@ irqreturn_t musb_g_ep0_irq(struct musb *musb)
musb->ep0_state = MUSB_EP0_STAGE_STATUSIN;
break;
default:
- ERR("SetupEnd came in a wrong ep0stage %s",
+ ERR("SetupEnd came in a wrong ep0stage %s\n",
decode_ep0stage(musb->ep0_state));
}
csr = musb_readw(regs, MUSB_CSR0);
@@ -787,12 +787,18 @@ setup:
handled = service_zero_data_request(
musb, &setup);
+ /*
+ * We're expecting no data in any case, so
+ * always set the DATAEND bit -- doing this
+ * here helps avoid SetupEnd interrupt coming
+ * in the idle stage when we're stalling...
+ */
+ musb->ackpend |= MUSB_CSR0_P_DATAEND;
+
/* status stage might be immediate */
- if (handled > 0) {
- musb->ackpend |= MUSB_CSR0_P_DATAEND;
+ if (handled > 0)
musb->ep0_state =
MUSB_EP0_STAGE_STATUSIN;
- }
break;
/* sequence #1 (IN to host), includes GET_STATUS
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-23 23:54:19 +0000