mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-20 17:08:52 +09:00
![Masahiro Yamada](/assets/img/avatar_default.png)
U-Boot has imported various source files from other projects, mostly Linux. Something like #ifdef __UBOOT__ [ modification for U-Boot ] #else [ original code ] #endif is an often used strategy for clarification of adjusted parts, that is, easier re-sync in future. Instead of defining __UBOOT__ in each source file, passing it from the top Makefile would be easier. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Acked-by: Marek Vasut <marex@denx.de> Acked-by: Heiko Schocher <hs@denx.de>
242 lines
5.2 KiB
C
242 lines
5.2 KiB
C
#include <common.h>
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#include <watchdog.h>
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#include <asm/errno.h>
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#include <linux/usb/ch9.h>
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#include <linux/usb/gadget.h>
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#include <usb.h>
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#include "linux-compat.h"
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#include "usb-compat.h"
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#include "musb_core.h"
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#include "musb_host.h"
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#include "musb_gadget.h"
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#ifdef CONFIG_MUSB_HOST
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static struct musb *host;
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static struct usb_hcd hcd;
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static enum usb_device_speed host_speed;
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static void musb_host_complete_urb(struct urb *urb)
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{
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urb->dev->status &= ~USB_ST_NOT_PROC;
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urb->dev->act_len = urb->actual_length;
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}
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static struct usb_host_endpoint hep;
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static struct urb urb;
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static struct urb *construct_urb(struct usb_device *dev, int endpoint_type,
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unsigned long pipe, void *buffer, int len,
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struct devrequest *setup, int interval)
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{
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int epnum = usb_pipeendpoint(pipe);
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int is_in = usb_pipein(pipe);
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memset(&urb, 0, sizeof(struct urb));
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memset(&hep, 0, sizeof(struct usb_host_endpoint));
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INIT_LIST_HEAD(&hep.urb_list);
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INIT_LIST_HEAD(&urb.urb_list);
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urb.ep = &hep;
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urb.complete = musb_host_complete_urb;
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urb.status = -EINPROGRESS;
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urb.dev = dev;
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urb.pipe = pipe;
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urb.transfer_buffer = buffer;
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urb.transfer_dma = (unsigned long)buffer;
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urb.transfer_buffer_length = len;
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urb.setup_packet = (unsigned char *)setup;
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urb.ep->desc.wMaxPacketSize =
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__cpu_to_le16(is_in ? dev->epmaxpacketin[epnum] :
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dev->epmaxpacketout[epnum]);
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urb.ep->desc.bmAttributes = endpoint_type;
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urb.ep->desc.bEndpointAddress =
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(is_in ? USB_DIR_IN : USB_DIR_OUT) | epnum;
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urb.ep->desc.bInterval = interval;
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return &urb;
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}
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#define MUSB_HOST_TIMEOUT 0x3ffffff
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static int submit_urb(struct usb_hcd *hcd, struct urb *urb)
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{
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struct musb *host = hcd->hcd_priv;
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int ret;
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int timeout;
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ret = musb_urb_enqueue(hcd, urb, 0);
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if (ret < 0) {
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printf("Failed to enqueue URB to controller\n");
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return ret;
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}
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timeout = MUSB_HOST_TIMEOUT;
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do {
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if (ctrlc())
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return -EIO;
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host->isr(0, host);
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} while ((urb->dev->status & USB_ST_NOT_PROC) && --timeout);
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return urb->status;
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}
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int submit_control_msg(struct usb_device *dev, unsigned long pipe,
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void *buffer, int len, struct devrequest *setup)
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{
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struct urb *urb = construct_urb(dev, USB_ENDPOINT_XFER_CONTROL, pipe,
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buffer, len, setup, 0);
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/* Fix speed for non hub-attached devices */
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if (!dev->parent)
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dev->speed = host_speed;
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return submit_urb(&hcd, urb);
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}
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int submit_bulk_msg(struct usb_device *dev, unsigned long pipe,
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void *buffer, int len)
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{
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struct urb *urb = construct_urb(dev, USB_ENDPOINT_XFER_BULK, pipe,
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buffer, len, NULL, 0);
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return submit_urb(&hcd, urb);
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}
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int submit_int_msg(struct usb_device *dev, unsigned long pipe,
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void *buffer, int len, int interval)
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{
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struct urb *urb = construct_urb(dev, USB_ENDPOINT_XFER_INT, pipe,
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buffer, len, NULL, interval);
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return submit_urb(&hcd, urb);
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}
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int usb_lowlevel_init(int index, enum usb_init_type init, void **controller)
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{
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u8 power;
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void *mbase;
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int timeout = MUSB_HOST_TIMEOUT;
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if (!host) {
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printf("MUSB host is not registered\n");
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return -ENODEV;
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}
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musb_start(host);
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mbase = host->mregs;
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do {
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if (musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_HM)
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break;
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} while (--timeout);
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if (!timeout)
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return -ENODEV;
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power = musb_readb(mbase, MUSB_POWER);
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musb_writeb(mbase, MUSB_POWER, MUSB_POWER_RESET | power);
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udelay(30000);
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power = musb_readb(mbase, MUSB_POWER);
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musb_writeb(mbase, MUSB_POWER, ~MUSB_POWER_RESET & power);
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host->isr(0, host);
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host_speed = (musb_readb(mbase, MUSB_POWER) & MUSB_POWER_HSMODE) ?
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USB_SPEED_HIGH :
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(musb_readb(mbase, MUSB_DEVCTL) & MUSB_DEVCTL_FSDEV) ?
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USB_SPEED_FULL : USB_SPEED_LOW;
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host->is_active = 1;
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hcd.hcd_priv = host;
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return 0;
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}
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int usb_lowlevel_stop(int index)
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{
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if (!host) {
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printf("MUSB host is not registered\n");
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return -ENODEV;
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}
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musb_stop(host);
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return 0;
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}
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#endif /* CONFIG_MUSB_HOST */
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#ifdef CONFIG_MUSB_GADGET
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static struct musb *gadget;
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int usb_gadget_handle_interrupts(void)
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{
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WATCHDOG_RESET();
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if (!gadget || !gadget->isr)
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return -EINVAL;
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return gadget->isr(0, gadget);
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}
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int usb_gadget_register_driver(struct usb_gadget_driver *driver)
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{
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int ret;
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if (!driver || driver->speed < USB_SPEED_FULL || !driver->bind ||
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!driver->setup) {
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printf("bad parameter.\n");
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return -EINVAL;
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}
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if (!gadget) {
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printf("Controller uninitialized\n");
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return -ENXIO;
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}
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ret = musb_gadget_start(&gadget->g, driver);
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if (ret < 0) {
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printf("gadget_start failed with %d\n", ret);
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return ret;
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}
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ret = driver->bind(&gadget->g);
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if (ret < 0) {
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printf("bind failed with %d\n", ret);
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return ret;
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}
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return 0;
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}
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int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
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{
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if (driver->disconnect)
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driver->disconnect(&gadget->g);
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if (driver->unbind)
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driver->unbind(&gadget->g);
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return 0;
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}
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#endif /* CONFIG_MUSB_GADGET */
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int musb_register(struct musb_hdrc_platform_data *plat, void *bdata,
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void *ctl_regs)
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{
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struct musb **musbp;
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switch (plat->mode) {
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#ifdef CONFIG_MUSB_HOST
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case MUSB_HOST:
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musbp = &host;
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break;
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#endif
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#ifdef CONFIG_MUSB_GADGET
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case MUSB_PERIPHERAL:
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musbp = &gadget;
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break;
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#endif
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default:
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return -EINVAL;
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}
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*musbp = musb_init_controller(plat, (struct device *)bdata, ctl_regs);
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if (!musbp) {
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printf("Failed to init the controller\n");
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return -EIO;
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}
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return 0;
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}
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