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-rw-r--r--arch/avr32/mach-at32ap/at32ap700x.c50
-rw-r--r--drivers/usb/gadget/Kconfig4
-rw-r--r--drivers/usb/gadget/atmel_usba_udc.c156
-rw-r--r--drivers/usb/gadget/atmel_usba_udc.h9
-rw-r--r--include/asm-avr32/arch-at32ap/board.h4
-rw-r--r--include/linux/usb/atmel_usba_udc.h22
6 files changed, 150 insertions, 95 deletions
diff --git a/arch/avr32/mach-at32ap/at32ap700x.c b/arch/avr32/mach-at32ap/at32ap700x.c
index 7678fee9a885..cb47afc9fffc 100644
--- a/arch/avr32/mach-at32ap/at32ap700x.c
+++ b/arch/avr32/mach-at32ap/at32ap700x.c
@@ -11,6 +11,7 @@
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <linux/spi/spi.h>
+#include <linux/usb/atmel_usba_udc.h>
#include <asm/io.h>
#include <asm/irq.h>
@@ -1351,9 +1352,39 @@ static struct clk usba0_hclk = {
.index = 6,
};
+#define EP(nam, idx, maxpkt, maxbk, dma, isoc) \
+ [idx] = { \
+ .name = nam, \
+ .index = idx, \
+ .fifo_size = maxpkt, \
+ .nr_banks = maxbk, \
+ .can_dma = dma, \
+ .can_isoc = isoc, \
+ }
+
+static struct usba_ep_data at32_usba_ep[] __initdata = {
+ EP("ep0", 0, 64, 1, 0, 0),
+ EP("ep1", 1, 512, 2, 1, 1),
+ EP("ep2", 2, 512, 2, 1, 1),
+ EP("ep3-int", 3, 64, 3, 1, 0),
+ EP("ep4-int", 4, 64, 3, 1, 0),
+ EP("ep5", 5, 1024, 3, 1, 1),
+ EP("ep6", 6, 1024, 3, 1, 1),
+};
+
+#undef EP
+
struct platform_device *__init
at32_add_device_usba(unsigned int id, struct usba_platform_data *data)
{
+ /*
+ * pdata doesn't have room for any endpoints, so we need to
+ * append room for the ones we need right after it.
+ */
+ struct {
+ struct usba_platform_data pdata;
+ struct usba_ep_data ep[7];
+ } usba_data;
struct platform_device *pdev;
if (id != 0)
@@ -1367,13 +1398,20 @@ at32_add_device_usba(unsigned int id, struct usba_platform_data *data)
ARRAY_SIZE(usba0_resource)))
goto out_free_pdev;
- if (data) {
- if (platform_device_add_data(pdev, data, sizeof(*data)))
- goto out_free_pdev;
+ if (data)
+ usba_data.pdata.vbus_pin = data->vbus_pin;
+ else
+ usba_data.pdata.vbus_pin = -EINVAL;
- if (data->vbus_pin != GPIO_PIN_NONE)
- at32_select_gpio(data->vbus_pin, 0);
- }
+ data = &usba_data.pdata;
+ data->num_ep = ARRAY_SIZE(at32_usba_ep);
+ memcpy(data->ep, at32_usba_ep, sizeof(at32_usba_ep));
+
+ if (platform_device_add_data(pdev, data, sizeof(usba_data)))
+ goto out_free_pdev;
+
+ if (data->vbus_pin >= 0)
+ at32_select_gpio(data->vbus_pin, 0);
usba0_pclk.dev = &pdev->dev;
usba0_hclk.dev = &pdev->dev;
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 6f45dd669b33..d681bb27fa58 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -118,10 +118,10 @@ config USB_AMD5536UDC
config USB_GADGET_ATMEL_USBA
boolean "Atmel USBA"
select USB_GADGET_DUALSPEED
- depends on AVR32
+ depends on AVR32 || ARCH_AT91CAP9
help
USBA is the integrated high-speed USB Device controller on
- the AT32AP700x processors from Atmel.
+ the AT32AP700x and AT91CAP9 processors from Atmel.
config USB_ATMEL_USBA
tristate
diff --git a/drivers/usb/gadget/atmel_usba_udc.c b/drivers/usb/gadget/atmel_usba_udc.c
index b0db4c31d018..e756023362c2 100644
--- a/drivers/usb/gadget/atmel_usba_udc.c
+++ b/drivers/usb/gadget/atmel_usba_udc.c
@@ -18,6 +18,7 @@
#include <linux/platform_device.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
+#include <linux/usb/atmel_usba_udc.h>
#include <linux/delay.h>
#include <asm/gpio.h>
@@ -27,6 +28,7 @@
static struct usba_udc the_udc;
+static struct usba_ep *usba_ep;
#ifdef CONFIG_USB_GADGET_DEBUG_FS
#include <linux/debugfs.h>
@@ -324,53 +326,28 @@ static int vbus_is_present(struct usba_udc *udc)
return 1;
}
-static void copy_to_fifo(void __iomem *fifo, const void *buf, int len)
+#if defined(CONFIG_AVR32)
+
+static void toggle_bias(int is_on)
{
- unsigned long tmp;
-
- DBG(DBG_FIFO, "copy to FIFO (len %d):\n", len);
- for (; len > 0; len -= 4, buf += 4, fifo += 4) {
- tmp = *(unsigned long *)buf;
- if (len >= 4) {
- DBG(DBG_FIFO, " -> %08lx\n", tmp);
- __raw_writel(tmp, fifo);
- } else {
- do {
- DBG(DBG_FIFO, " -> %02lx\n", tmp >> 24);
- __raw_writeb(tmp >> 24, fifo);
- fifo++;
- tmp <<= 8;
- } while (--len);
- break;
- }
- }
}
-static void copy_from_fifo(void *buf, void __iomem *fifo, int len)
+#elif defined(CONFIG_ARCH_AT91)
+
+#include <asm/arch/at91_pmc.h>
+
+static void toggle_bias(int is_on)
{
- union {
- unsigned long *w;
- unsigned char *b;
- } p;
- unsigned long tmp;
-
- DBG(DBG_FIFO, "copy from FIFO (len %d):\n", len);
- for (p.w = buf; len > 0; len -= 4, p.w++, fifo += 4) {
- if (len >= 4) {
- tmp = __raw_readl(fifo);
- *p.w = tmp;
- DBG(DBG_FIFO, " -> %08lx\n", tmp);
- } else {
- do {
- tmp = __raw_readb(fifo);
- *p.b = tmp;
- DBG(DBG_FIFO, " -> %02lx\n", tmp);
- fifo++, p.b++;
- } while (--len);
- }
- }
+ unsigned int uckr = at91_sys_read(AT91_CKGR_UCKR);
+
+ if (is_on)
+ at91_sys_write(AT91_CKGR_UCKR, uckr | AT91_PMC_BIASEN);
+ else
+ at91_sys_write(AT91_CKGR_UCKR, uckr & ~(AT91_PMC_BIASEN));
}
+#endif /* CONFIG_ARCH_AT91 */
+
static void next_fifo_transaction(struct usba_ep *ep, struct usba_request *req)
{
unsigned int transaction_len;
@@ -387,7 +364,7 @@ static void next_fifo_transaction(struct usba_ep *ep, struct usba_request *req)
ep->ep.name, req, transaction_len,
req->last_transaction ? ", done" : "");
- copy_to_fifo(ep->fifo, req->req.buf + req->req.actual, transaction_len);
+ memcpy_toio(ep->fifo, req->req.buf + req->req.actual, transaction_len);
usba_ep_writel(ep, SET_STA, USBA_TX_PK_RDY);
req->req.actual += transaction_len;
}
@@ -476,7 +453,7 @@ static void receive_data(struct usba_ep *ep)
bytecount = req->req.length - req->req.actual;
}
- copy_from_fifo(req->req.buf + req->req.actual,
+ memcpy_fromio(req->req.buf + req->req.actual,
ep->fifo, bytecount);
req->req.actual += bytecount;
@@ -1029,33 +1006,6 @@ static const struct usb_gadget_ops usba_udc_ops = {
.set_selfpowered = usba_udc_set_selfpowered,
};
-#define EP(nam, idx, maxpkt, maxbk, dma, isoc) \
-{ \
- .ep = { \
- .ops = &usba_ep_ops, \
- .name = nam, \
- .maxpacket = maxpkt, \
- }, \
- .udc = &the_udc, \
- .queue = LIST_HEAD_INIT(usba_ep[idx].queue), \
- .fifo_size = maxpkt, \
- .nr_banks = maxbk, \
- .index = idx, \
- .can_dma = dma, \
- .can_isoc = isoc, \
-}
-
-static struct usba_ep usba_ep[] = {
- EP("ep0", 0, 64, 1, 0, 0),
- EP("ep1in-bulk", 1, 512, 2, 1, 1),
- EP("ep2out-bulk", 2, 512, 2, 1, 1),
- EP("ep3in-int", 3, 64, 3, 1, 0),
- EP("ep4out-int", 4, 64, 3, 1, 0),
- EP("ep5in-iso", 5, 1024, 3, 1, 1),
- EP("ep6out-iso", 6, 1024, 3, 1, 1),
-};
-#undef EP
-
static struct usb_endpoint_descriptor usba_ep0_desc = {
.bLength = USB_DT_ENDPOINT_SIZE,
.bDescriptorType = USB_DT_ENDPOINT,
@@ -1074,7 +1024,6 @@ static void nop_release(struct device *dev)
static struct usba_udc the_udc = {
.gadget = {
.ops = &usba_udc_ops,
- .ep0 = &usba_ep[0].ep,
.ep_list = LIST_HEAD_INIT(the_udc.gadget.ep_list),
.is_dualspeed = 1,
.name = "atmel_usba_udc",
@@ -1231,7 +1180,7 @@ static int do_test_mode(struct usba_udc *udc)
} else {
usba_ep_writel(ep, CTL_ENB, USBA_EPT_ENABLE);
usba_writel(udc, TST, USBA_TST_PKT_MODE);
- copy_to_fifo(ep->fifo, test_packet_buffer,
+ memcpy_toio(ep->fifo, test_packet_buffer,
sizeof(test_packet_buffer));
usba_ep_writel(ep, SET_STA, USBA_TX_PK_RDY);
dev_info(dev, "Entering Test_Packet mode...\n");
@@ -1530,13 +1479,13 @@ restart:
DBG(DBG_HW, "Packet length: %u\n", pkt_len);
if (pkt_len != sizeof(crq)) {
pr_warning("udc: Invalid packet length %u "
- "(expected %lu)\n", pkt_len, sizeof(crq));
+ "(expected %zu)\n", pkt_len, sizeof(crq));
set_protocol_stall(udc, ep);
return;
}
DBG(DBG_FIFO, "Copying ctrl request from 0x%p:\n", ep->fifo);
- copy_from_fifo(crq.data, ep->fifo, sizeof(crq));
+ memcpy_fromio(crq.data, ep->fifo, sizeof(crq));
/* Free up one bank in the FIFO so that we can
* generate or receive a reply right away. */
@@ -1688,6 +1637,7 @@ static irqreturn_t usba_udc_irq(int irq, void *devid)
DBG(DBG_INT, "irq, status=%#08x\n", status);
if (status & USBA_DET_SUSPEND) {
+ toggle_bias(0);
usba_writel(udc, INT_CLR, USBA_DET_SUSPEND);
DBG(DBG_BUS, "Suspend detected\n");
if (udc->gadget.speed != USB_SPEED_UNKNOWN
@@ -1699,6 +1649,7 @@ static irqreturn_t usba_udc_irq(int irq, void *devid)
}
if (status & USBA_WAKE_UP) {
+ toggle_bias(1);
usba_writel(udc, INT_CLR, USBA_WAKE_UP);
DBG(DBG_BUS, "Wake Up CPU detected\n");
}
@@ -1792,12 +1743,14 @@ static irqreturn_t usba_vbus_irq(int irq, void *devid)
vbus = gpio_get_value(udc->vbus_pin);
if (vbus != udc->vbus_prev) {
if (vbus) {
- usba_writel(udc, CTRL, USBA_EN_USBA);
+ toggle_bias(1);
+ usba_writel(udc, CTRL, USBA_ENABLE_MASK);
usba_writel(udc, INT_ENB, USBA_END_OF_RESET);
} else {
udc->gadget.speed = USB_SPEED_UNKNOWN;
reset_all_endpoints(udc);
- usba_writel(udc, CTRL, 0);
+ toggle_bias(0);
+ usba_writel(udc, CTRL, USBA_DISABLE_MASK);
spin_unlock(&udc->lock);
udc->driver->disconnect(&udc->gadget);
spin_lock(&udc->lock);
@@ -1850,7 +1803,8 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
/* If Vbus is present, enable the controller and wait for reset */
spin_lock_irqsave(&udc->lock, flags);
if (vbus_is_present(udc) && udc->vbus_prev == 0) {
- usba_writel(udc, CTRL, USBA_EN_USBA);
+ toggle_bias(1);
+ usba_writel(udc, CTRL, USBA_ENABLE_MASK);
usba_writel(udc, INT_ENB, USBA_END_OF_RESET);
}
spin_unlock_irqrestore(&udc->lock, flags);
@@ -1883,7 +1837,8 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
spin_unlock_irqrestore(&udc->lock, flags);
/* This will also disable the DP pullup */
- usba_writel(udc, CTRL, 0);
+ toggle_bias(0);
+ usba_writel(udc, CTRL, USBA_DISABLE_MASK);
driver->unbind(&udc->gadget);
udc->gadget.dev.driver = NULL;
@@ -1908,7 +1863,7 @@ static int __init usba_udc_probe(struct platform_device *pdev)
regs = platform_get_resource(pdev, IORESOURCE_MEM, CTRL_IOMEM_ID);
fifo = platform_get_resource(pdev, IORESOURCE_MEM, FIFO_IOMEM_ID);
- if (!regs || !fifo)
+ if (!regs || !fifo || !pdata)
return -ENXIO;
irq = platform_get_irq(pdev, 0);
@@ -1953,19 +1908,48 @@ static int __init usba_udc_probe(struct platform_device *pdev)
/* Make sure we start from a clean slate */
clk_enable(pclk);
- usba_writel(udc, CTRL, 0);
+ toggle_bias(0);
+ usba_writel(udc, CTRL, USBA_DISABLE_MASK);
clk_disable(pclk);
+ usba_ep = kmalloc(sizeof(struct usba_ep) * pdata->num_ep,
+ GFP_KERNEL);
+ if (!usba_ep)
+ goto err_alloc_ep;
+
+ the_udc.gadget.ep0 = &usba_ep[0].ep;
+
INIT_LIST_HEAD(&usba_ep[0].ep.ep_list);
usba_ep[0].ep_regs = udc->regs + USBA_EPT_BASE(0);
usba_ep[0].dma_regs = udc->regs + USBA_DMA_BASE(0);
usba_ep[0].fifo = udc->fifo + USBA_FIFO_BASE(0);
- for (i = 1; i < ARRAY_SIZE(usba_ep); i++) {
+ usba_ep[0].ep.ops = &usba_ep_ops;
+ usba_ep[0].ep.name = pdata->ep[0].name;
+ usba_ep[0].ep.maxpacket = pdata->ep[0].fifo_size;
+ usba_ep[0].udc = &the_udc;
+ INIT_LIST_HEAD(&usba_ep[0].queue);
+ usba_ep[0].fifo_size = pdata->ep[0].fifo_size;
+ usba_ep[0].nr_banks = pdata->ep[0].nr_banks;
+ usba_ep[0].index = pdata->ep[0].index;
+ usba_ep[0].can_dma = pdata->ep[0].can_dma;
+ usba_ep[0].can_isoc = pdata->ep[0].can_isoc;
+
+ for (i = 1; i < pdata->num_ep; i++) {
struct usba_ep *ep = &usba_ep[i];
ep->ep_regs = udc->regs + USBA_EPT_BASE(i);
ep->dma_regs = udc->regs + USBA_DMA_BASE(i);
ep->fifo = udc->fifo + USBA_FIFO_BASE(i);
+ ep->ep.ops = &usba_ep_ops;
+ ep->ep.name = pdata->ep[i].name;
+ ep->ep.maxpacket = pdata->ep[i].fifo_size;
+ ep->udc = &the_udc;
+ INIT_LIST_HEAD(&ep->queue);
+ ep->fifo_size = pdata->ep[i].fifo_size;
+ ep->nr_banks = pdata->ep[i].nr_banks;
+ ep->index = pdata->ep[i].index;
+ ep->can_dma = pdata->ep[i].can_dma;
+ ep->can_isoc = pdata->ep[i].can_isoc;
list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list);
}
@@ -1984,7 +1968,7 @@ static int __init usba_udc_probe(struct platform_device *pdev)
goto err_device_add;
}
- if (pdata && pdata->vbus_pin != GPIO_PIN_NONE) {
+ if (pdata->vbus_pin >= 0) {
if (!gpio_request(pdata->vbus_pin, "atmel_usba_udc")) {
udc->vbus_pin = pdata->vbus_pin;
@@ -2004,7 +1988,7 @@ static int __init usba_udc_probe(struct platform_device *pdev)
}
usba_init_debugfs(udc);
- for (i = 1; i < ARRAY_SIZE(usba_ep); i++)
+ for (i = 1; i < pdata->num_ep; i++)
usba_ep_init_debugfs(udc, &usba_ep[i]);
return 0;
@@ -2012,6 +1996,8 @@ static int __init usba_udc_probe(struct platform_device *pdev)
err_device_add:
free_irq(irq, udc);
err_request_irq:
+ kfree(usba_ep);
+err_alloc_ep:
iounmap(udc->fifo);
err_map_fifo:
iounmap(udc->regs);
@@ -2029,10 +2015,11 @@ static int __exit usba_udc_remove(struct platform_device *pdev)
{
struct usba_udc *udc;
int i;
+ struct usba_platform_data *pdata = pdev->dev.platform_data;
udc = platform_get_drvdata(pdev);
- for (i = 1; i < ARRAY_SIZE(usba_ep); i++)
+ for (i = 1; i < pdata->num_ep; i++)
usba_ep_cleanup_debugfs(&usba_ep[i]);
usba_cleanup_debugfs(udc);
@@ -2040,6 +2027,7 @@ static int __exit usba_udc_remove(struct platform_device *pdev)
gpio_free(udc->vbus_pin);
free_irq(udc->irq, udc);
+ kfree(usba_ep);
iounmap(udc->fifo);
iounmap(udc->regs);
clk_put(udc->hclk);
diff --git a/drivers/usb/gadget/atmel_usba_udc.h b/drivers/usb/gadget/atmel_usba_udc.h
index 08bf6f9aaf7e..f7baea307f0d 100644
--- a/drivers/usb/gadget/atmel_usba_udc.h
+++ b/drivers/usb/gadget/atmel_usba_udc.h
@@ -41,6 +41,15 @@
#define USBA_EN_USBA (1 << 8)
#define USBA_DETACH (1 << 9)
#define USBA_REMOTE_WAKE_UP (1 << 10)
+#define USBA_PULLD_DIS (1 << 11)
+
+#if defined(CONFIG_AVR32)
+#define USBA_ENABLE_MASK USBA_EN_USBA
+#define USBA_DISABLE_MASK 0
+#elif defined(CONFIG_ARCH_AT91)
+#define USBA_ENABLE_MASK (USBA_EN_USBA | USBA_PULLD_DIS)
+#define USBA_DISABLE_MASK USBA_DETACH
+#endif /* CONFIG_ARCH_AT91 */
/* Bitfields in FNUM */
#define USBA_MICRO_FRAME_NUM_OFFSET 0
diff --git a/include/asm-avr32/arch-at32ap/board.h b/include/asm-avr32/arch-at32ap/board.h
index 7597b0bd2f01..3fea2004f7db 100644
--- a/include/asm-avr32/arch-at32ap/board.h
+++ b/include/asm-avr32/arch-at32ap/board.h
@@ -38,9 +38,7 @@ struct platform_device *
at32_add_device_lcdc(unsigned int id, struct atmel_lcdfb_info *data,
unsigned long fbmem_start, unsigned long fbmem_len);
-struct usba_platform_data {
- int vbus_pin;
-};
+struct usba_platform_data;
struct platform_device *
at32_add_device_usba(unsigned int id, struct usba_platform_data *data);
diff --git a/include/linux/usb/atmel_usba_udc.h b/include/linux/usb/atmel_usba_udc.h
new file mode 100644
index 000000000000..6311fa2d9f82
--- /dev/null
+++ b/include/linux/usb/atmel_usba_udc.h
@@ -0,0 +1,22 @@
+/*
+ * Platform data definitions for Atmel USBA gadget driver.
+ */
+#ifndef __LINUX_USB_USBA_H
+#define __LINUX_USB_USBA_H
+
+struct usba_ep_data {
+ char *name;
+ int index;
+ int fifo_size;
+ int nr_banks;
+ int can_dma;
+ int can_isoc;
+};
+
+struct usba_platform_data {
+ int vbus_pin;
+ int num_ep;
+ struct usba_ep_data ep[0];
+};
+
+#endif /* __LINUX_USB_USBA_H */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-07 12:51:47 +0000