*/
#include <common.h>
#include <command.h>
+#include <dm.h>
#include <asm/processor.h>
#include <linux/compiler.h>
#include <linux/ctype.h>
#define USB_BUFSIZ 512
-static struct usb_device usb_dev[USB_MAX_DEVICE];
-static int dev_index;
static int asynch_allowed;
-
char usb_started; /* flag for the started/stopped USB status */
+#ifndef CONFIG_DM_USB
+static struct usb_device usb_dev[USB_MAX_DEVICE];
+static int dev_index;
+
#ifndef CONFIG_USB_MAX_CONTROLLER_COUNT
#define CONFIG_USB_MAX_CONTROLLER_COUNT 1
#endif
return 0;
}
+/******************************************************************************
+ * Detect if a USB device has been plugged or unplugged.
+ */
+int usb_detect_change(void)
+{
+ int i, j;
+ int change = 0;
+
+ for (j = 0; j < USB_MAX_DEVICE; j++) {
+ for (i = 0; i < usb_dev[j].maxchild; i++) {
+ struct usb_port_status status;
+
+ if (usb_get_port_status(&usb_dev[j], i + 1,
+ &status) < 0)
+ /* USB request failed */
+ continue;
+
+ if (le16_to_cpu(status.wPortChange) &
+ USB_PORT_STAT_C_CONNECTION)
+ change++;
+ }
+ }
+
+ return change;
+}
+
/*
* disables the asynch behaviour of the control message. This is used for data
* transfers that uses the exclusiv access to the control and bulk messages.
asynch_allowed = !disable;
return old_value;
}
+#endif /* !CONFIG_DM_USB */
/*-------------------------------------------------------------------
void *data, unsigned short size, int timeout)
{
ALLOC_CACHE_ALIGN_BUFFER(struct devrequest, setup_packet, 1);
+ int err;
if ((timeout == 0) && (!asynch_allowed)) {
/* request for a asynch control pipe is not allowed */
request, requesttype, value, index, size);
dev->status = USB_ST_NOT_PROC; /*not yet processed */
- if (submit_control_msg(dev, pipe, data, size, setup_packet) < 0)
- return -EIO;
+ err = submit_control_msg(dev, pipe, data, size, setup_packet);
+ if (err < 0)
+ return err;
if (timeout == 0)
return (int)size;
* the USB device are static allocated [USB_MAX_DEVICE].
*/
+#ifndef CONFIG_DM_USB
/* returns a pointer to the device with the index [index].
* if the device is not assigned (dev->devnum==-1) returns NULL
{
return 0;
}
+#endif /* !CONFIG_DM_USB */
-int usb_legacy_port_reset(struct usb_device *hub, int portnr)
+static int usb_hub_port_reset(struct usb_device *dev, struct usb_device *hub)
{
if (hub) {
unsigned short portstatus;
int err;
/* reset the port for the second time */
- err = legacy_hub_port_reset(hub, portnr - 1, &portstatus);
+ err = legacy_hub_port_reset(hub, dev->portnr - 1, &portstatus);
if (err < 0) {
- printf("\n Couldn't reset port %i\n", portnr);
+ printf("\n Couldn't reset port %i\n", dev->portnr);
return err;
}
} else {
- usb_reset_root_port();
+ usb_reset_root_port(dev);
}
return 0;
}
-static int usb_setup_descriptor(struct usb_device *dev, bool do_read)
+static int get_descriptor_len(struct usb_device *dev, int len, int expect_len)
{
__maybe_unused struct usb_device_descriptor *desc;
ALLOC_CACHE_ALIGN_BUFFER(unsigned char, tmpbuf, USB_BUFSIZ);
+ int err;
+
+ desc = (struct usb_device_descriptor *)tmpbuf;
+ err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, desc, len);
+ if (err < expect_len) {
+ if (err < 0) {
+ printf("unable to get device descriptor (error=%d)\n",
+ err);
+ return err;
+ } else {
+ printf("USB device descriptor short read (expected %i, got %i)\n",
+ expect_len, err);
+ return -EIO;
+ }
+ }
+ memcpy(&dev->descriptor, tmpbuf, sizeof(dev->descriptor));
+
+ return 0;
+}
+
+static int usb_setup_descriptor(struct usb_device *dev, bool do_read)
+{
/*
* This is a Windows scheme of initialization sequence, with double
* reset of the device (Linux uses the same sequence)
* send 64-byte GET-DEVICE-DESCRIPTOR request. Since the descriptor is
* only 18 bytes long, this will terminate with a short packet. But if
* the maxpacket size is 8 or 16 the device may be waiting to transmit
- * some more, or keeps on retransmitting the 8 byte header. */
+ * some more, or keeps on retransmitting the 8 byte header.
+ */
- desc = (struct usb_device_descriptor *)tmpbuf;
- dev->descriptor.bMaxPacketSize0 = 64; /* Start off at 64 bytes */
- /* Default to 64 byte max packet size */
- dev->maxpacketsize = PACKET_SIZE_64;
- dev->epmaxpacketin[0] = 64;
- dev->epmaxpacketout[0] = 64;
+ if (dev->speed == USB_SPEED_LOW) {
+ dev->descriptor.bMaxPacketSize0 = 8;
+ dev->maxpacketsize = PACKET_SIZE_8;
+ } else {
+ dev->descriptor.bMaxPacketSize0 = 64;
+ dev->maxpacketsize = PACKET_SIZE_64;
+ }
+ dev->epmaxpacketin[0] = dev->descriptor.bMaxPacketSize0;
+ dev->epmaxpacketout[0] = dev->descriptor.bMaxPacketSize0;
if (do_read) {
int err;
- err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, desc, 64);
/*
* Validate we've received only at least 8 bytes, not that we've
* received the entire descriptor. The reasoning is:
* bytes of data with the maxpacket guessed as 64 (above) yields a
* request for 1 packet.
*/
- if (err < 8) {
- if (err < 0) {
- printf("unable to get device descriptor (error=%d)\n",
- err);
- return err;
- } else {
- printf("USB device descriptor short read (expected %i, got %i)\n",
- (int)sizeof(dev->descriptor), err);
- return -EIO;
- }
- }
- memcpy(&dev->descriptor, tmpbuf, sizeof(dev->descriptor));
+ err = get_descriptor_len(dev, 64, 8);
+ if (err)
+ return err;
}
dev->epmaxpacketin[0] = dev->descriptor.bMaxPacketSize0;
return 0;
}
-/*
- * By the time we get here, the device has gotten a new device ID
- * and is in the default state. We need to identify the thing and
- * get the ball rolling..
- *
- * Returns 0 for success, != 0 for error.
- */
-int usb_new_device(struct usb_device *dev)
+static int usb_prepare_device(struct usb_device *dev, int addr, bool do_read,
+ struct usb_device *parent)
{
- bool do_read = true;
- int addr, err;
- int tmp;
- ALLOC_CACHE_ALIGN_BUFFER(unsigned char, tmpbuf, USB_BUFSIZ);
+ int err;
/*
* Allocate usb 3.0 device context.
* and related data structures first. This call does that.
* Refer to sec 4.3.2 in xHCI spec rev1.0
*/
- if (usb_alloc_device(dev)) {
+ err = usb_alloc_device(dev);
+ if (err) {
printf("Cannot allocate device context to get SLOT_ID\n");
- return -1;
+ return err;
}
-
- /* We still haven't set the Address yet */
- addr = dev->devnum;
- dev->devnum = 0;
-
- /*
- * XHCI needs to issue a Address device command to setup
- * proper device context structures, before it can interact
- * with the device. So a get_descriptor will fail before any
- * of that is done for XHCI unlike EHCI.
- */
-#ifdef CONFIG_USB_XHCI
- do_read = false;
-#endif
err = usb_setup_descriptor(dev, do_read);
if (err)
return err;
- err = usb_legacy_port_reset(dev->parent, dev->portnr);
+ err = usb_hub_port_reset(dev, parent);
if (err)
return err;
if (err < 0) {
printf("\n USB device not accepting new address " \
"(error=%lX)\n", dev->status);
- return -EIO;
+ return err;
}
mdelay(10); /* Let the SET_ADDRESS settle */
- tmp = sizeof(dev->descriptor);
+ return 0;
+}
+
+int usb_select_config(struct usb_device *dev)
+{
+ ALLOC_CACHE_ALIGN_BUFFER(unsigned char, tmpbuf, USB_BUFSIZ);
+ int err;
+
+ err = get_descriptor_len(dev, USB_DT_DEVICE_SIZE, USB_DT_DEVICE_SIZE);
+ if (err)
+ return err;
- err = usb_get_descriptor(dev, USB_DT_DEVICE, 0,
- tmpbuf, sizeof(dev->descriptor));
- if (err < tmp) {
- if (err < 0)
- printf("unable to get device descriptor (error=%d)\n",
- err);
- else
- printf("USB device descriptor short read " \
- "(expected %i, got %i)\n", tmp, err);
- return -EIO;
- }
- memcpy(&dev->descriptor, tmpbuf, sizeof(dev->descriptor));
/* correct le values */
le16_to_cpus(&dev->descriptor.bcdUSB);
le16_to_cpus(&dev->descriptor.idVendor);
le16_to_cpus(&dev->descriptor.idProduct);
le16_to_cpus(&dev->descriptor.bcdDevice);
+
/* only support for one config for now */
err = usb_get_configuration_no(dev, tmpbuf, 0);
if (err < 0) {
printf("usb_new_device: Cannot read configuration, " \
"skipping device %04x:%04x\n",
dev->descriptor.idVendor, dev->descriptor.idProduct);
- return -EIO;
+ return err;
}
usb_parse_config(dev, tmpbuf, 0);
usb_set_maxpacket(dev);
- /* we set the default configuration here */
- if (usb_set_configuration(dev, dev->config.desc.bConfigurationValue)) {
+ /*
+ * we set the default configuration here
+ * This seems premature. If the driver wants a different configuration
+ * it will need to select itself.
+ */
+ err = usb_set_configuration(dev, dev->config.desc.bConfigurationValue);
+ if (err < 0) {
printf("failed to set default configuration " \
"len %d, status %lX\n", dev->act_len, dev->status);
- return -EIO;
+ return err;
}
debug("new device strings: Mfr=%d, Product=%d, SerialNumber=%d\n",
dev->descriptor.iManufacturer, dev->descriptor.iProduct,
debug("Manufacturer %s\n", dev->mf);
debug("Product %s\n", dev->prod);
debug("SerialNumber %s\n", dev->serial);
- /* now prode if the device is a hub */
- usb_hub_probe(dev, 0);
+
+ return 0;
+}
+
+int usb_setup_device(struct usb_device *dev, bool do_read,
+ struct usb_device *parent)
+{
+ int addr;
+ int ret;
+
+ /* We still haven't set the Address yet */
+ addr = dev->devnum;
+ dev->devnum = 0;
+
+ ret = usb_prepare_device(dev, addr, do_read, parent);
+ if (ret)
+ return ret;
+ ret = usb_select_config(dev);
+
+ return ret;
+}
+
+#ifndef CONFIG_DM_USB
+/*
+ * By the time we get here, the device has gotten a new device ID
+ * and is in the default state. We need to identify the thing and
+ * get the ball rolling..
+ *
+ * Returns 0 for success, != 0 for error.
+ */
+int usb_new_device(struct usb_device *dev)
+{
+ bool do_read = true;
+ int err;
+
+ /*
+ * XHCI needs to issue a Address device command to setup
+ * proper device context structures, before it can interact
+ * with the device. So a get_descriptor will fail before any
+ * of that is done for XHCI unlike EHCI.
+ */
+#ifdef CONFIG_USB_XHCI
+ do_read = false;
+#endif
+ err = usb_setup_device(dev, do_read, dev->parent);
+ if (err)
+ return err;
+
+ /* Now probe if the device is a hub */
+ err = usb_hub_probe(dev, 0);
+ if (err < 0)
+ return err;
+
return 0;
}
+#endif
__weak
int board_usb_init(int index, enum usb_init_type init)
{
return 0;
}
+
+bool usb_device_has_child_on_port(struct usb_device *parent, int port)
+{
+#ifdef CONFIG_DM_USB
+ return false;
+#else
+ return parent->children[port] != NULL;
+#endif
+}
+
/* EOF */
projects / karo-tx-uboot.git / blobdiff