Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/usb/gadget/pxa2xx_udc.h b/drivers/usb/gadget/pxa2xx_udc.h
new file mode 100644
index 0000000..1f3a7d9
--- /dev/null
+++ b/drivers/usb/gadget/pxa2xx_udc.h
@@ -0,0 +1,320 @@
+/*
+ * linux/drivers/usb/gadget/pxa2xx_udc.h
+ * Intel PXA2xx on-chip full speed USB device controller
+ *
+ * Copyright (C) 2003 Robert Schwebel <r.schwebel@pengutronix.de>, Pengutronix
+ * Copyright (C) 2003 David Brownell
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef __LINUX_USB_GADGET_PXA2XX_H
+#define __LINUX_USB_GADGET_PXA2XX_H
+
+#include <linux/types.h>
+
+/*-------------------------------------------------------------------------*/
+
+/* pxa2xx has this (move to include/asm-arm/arch-pxa/pxa-regs.h) */
+#define UFNRH_SIR (1 << 7) /* SOF interrupt request */
+#define UFNRH_SIM (1 << 6) /* SOF interrupt mask */
+#define UFNRH_IPE14 (1 << 5) /* ISO packet error, ep14 */
+#define UFNRH_IPE9 (1 << 4) /* ISO packet error, ep9 */
+#define UFNRH_IPE4 (1 << 3) /* ISO packet error, ep4 */
+
+/* pxa255 has this (move to include/asm-arm/arch-pxa/pxa-regs.h) */
+#define UDCCFR UDC_RES2 /* UDC Control Function Register */
+#define UDCCFR_AREN (1 << 7) /* ACK response enable (now) */
+#define UDCCFR_ACM (1 << 2) /* ACK control mode (wait for AREN) */
+
+/* latest pxa255 errata define new "must be one" bits in UDCCFR */
+#define UDCCFR_MB1 (0xff & ~(UDCCFR_AREN|UDCCFR_ACM))
+
+/*-------------------------------------------------------------------------*/
+
+struct pxa2xx_udc;
+
+struct pxa2xx_ep {
+ struct usb_ep ep;
+ struct pxa2xx_udc *dev;
+
+ const struct usb_endpoint_descriptor *desc;
+ struct list_head queue;
+ unsigned long pio_irqs;
+ unsigned long dma_irqs;
+ short dma;
+
+ unsigned short fifo_size;
+ u8 bEndpointAddress;
+ u8 bmAttributes;
+
+ unsigned stopped : 1;
+ unsigned dma_fixup : 1;
+
+ /* UDCCS = UDC Control/Status for this EP
+ * UBCR = UDC Byte Count Remaining (contents of OUT fifo)
+ * UDDR = UDC Endpoint Data Register (the fifo)
+ * DRCM = DMA Request Channel Map
+ */
+ volatile u32 *reg_udccs;
+ volatile u32 *reg_ubcr;
+ volatile u32 *reg_uddr;
+#ifdef USE_DMA
+ volatile u32 *reg_drcmr;
+#define drcmr(n) .reg_drcmr = & DRCMR ## n ,
+#else
+#define drcmr(n)
+#endif
+};
+
+struct pxa2xx_request {
+ struct usb_request req;
+ struct list_head queue;
+};
+
+enum ep0_state {
+ EP0_IDLE,
+ EP0_IN_DATA_PHASE,
+ EP0_OUT_DATA_PHASE,
+ EP0_END_XFER,
+ EP0_STALL,
+};
+
+#define EP0_FIFO_SIZE ((unsigned)16)
+#define BULK_FIFO_SIZE ((unsigned)64)
+#define ISO_FIFO_SIZE ((unsigned)256)
+#define INT_FIFO_SIZE ((unsigned)8)
+
+struct udc_stats {
+ struct ep0stats {
+ unsigned long ops;
+ unsigned long bytes;
+ } read, write;
+ unsigned long irqs;
+};
+
+#ifdef CONFIG_USB_PXA2XX_SMALL
+/* when memory's tight, SMALL config saves code+data. */
+#undef USE_DMA
+#define PXA_UDC_NUM_ENDPOINTS 3
+#endif
+
+#ifndef PXA_UDC_NUM_ENDPOINTS
+#define PXA_UDC_NUM_ENDPOINTS 16
+#endif
+
+struct pxa2xx_udc {
+ struct usb_gadget gadget;
+ struct usb_gadget_driver *driver;
+
+ enum ep0_state ep0state;
+ struct udc_stats stats;
+ unsigned got_irq : 1,
+ vbus : 1,
+ pullup : 1,
+ has_cfr : 1,
+ req_pending : 1,
+ req_std : 1,
+ req_config : 1;
+
+#define start_watchdog(dev) mod_timer(&dev->timer, jiffies + (HZ/200))
+ struct timer_list timer;
+
+ struct device *dev;
+ struct pxa2xx_udc_mach_info *mach;
+ u64 dma_mask;
+ struct pxa2xx_ep ep [PXA_UDC_NUM_ENDPOINTS];
+};
+
+/*-------------------------------------------------------------------------*/
+
+#ifdef CONFIG_ARCH_LUBBOCK
+#include <asm/arch/lubbock.h>
+/* lubbock can also report usb connect/disconnect irqs */
+
+#ifdef DEBUG
+#define HEX_DISPLAY(n) if (machine_is_lubbock()) { LUB_HEXLED = (n); }
+#endif
+
+#endif
+
+/*-------------------------------------------------------------------------*/
+
+/* LEDs are only for debug */
+#ifndef HEX_DISPLAY
+#define HEX_DISPLAY(n) do {} while(0)
+#endif
+
+#ifdef DEBUG
+#include <asm/leds.h>
+
+#define LED_CONNECTED_ON leds_event(led_green_on)
+#define LED_CONNECTED_OFF do { \
+ leds_event(led_green_off); \
+ HEX_DISPLAY(0); \
+ } while(0)
+#endif
+
+#ifndef LED_CONNECTED_ON
+#define LED_CONNECTED_ON do {} while(0)
+#define LED_CONNECTED_OFF do {} while(0)
+#endif
+
+/*-------------------------------------------------------------------------*/
+
+static struct pxa2xx_udc *the_controller;
+
+/* one GPIO should be used to detect host disconnect */
+static inline int is_usb_connected(void)
+{
+ if (!the_controller->mach->udc_is_connected)
+ return 1;
+ return the_controller->mach->udc_is_connected();
+}
+
+/* one GPIO should force the host to see this device (or not) */
+static inline void make_usb_disappear(void)
+{
+ if (!the_controller->mach->udc_command)
+ return;
+ the_controller->mach->udc_command(PXA2XX_UDC_CMD_DISCONNECT);
+}
+
+static inline void let_usb_appear(void)
+{
+ if (!the_controller->mach->udc_command)
+ return;
+ the_controller->mach->udc_command(PXA2XX_UDC_CMD_CONNECT);
+}
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * Debugging support vanishes in non-debug builds. DBG_NORMAL should be
+ * mostly silent during normal use/testing, with no timing side-effects.
+ */
+#define DBG_NORMAL 1 /* error paths, device state transitions */
+#define DBG_VERBOSE 2 /* add some success path trace info */
+#define DBG_NOISY 3 /* ... even more: request level */
+#define DBG_VERY_NOISY 4 /* ... even more: packet level */
+
+#ifdef DEBUG
+
+static const char *state_name[] = {
+ "EP0_IDLE",
+ "EP0_IN_DATA_PHASE", "EP0_OUT_DATA_PHASE",
+ "EP0_END_XFER", "EP0_STALL"
+};
+
+#define DMSG(stuff...) printk(KERN_DEBUG "udc: " stuff)
+
+#ifdef VERBOSE
+# define UDC_DEBUG DBG_VERBOSE
+#else
+# define UDC_DEBUG DBG_NORMAL
+#endif
+
+static void __attribute__ ((__unused__))
+dump_udccr(const char *label)
+{
+ u32 udccr = UDCCR;
+ DMSG("%s %02X =%s%s%s%s%s%s%s%s\n",
+ label, udccr,
+ (udccr & UDCCR_REM) ? " rem" : "",
+ (udccr & UDCCR_RSTIR) ? " rstir" : "",
+ (udccr & UDCCR_SRM) ? " srm" : "",
+ (udccr & UDCCR_SUSIR) ? " susir" : "",
+ (udccr & UDCCR_RESIR) ? " resir" : "",
+ (udccr & UDCCR_RSM) ? " rsm" : "",
+ (udccr & UDCCR_UDA) ? " uda" : "",
+ (udccr & UDCCR_UDE) ? " ude" : "");
+}
+
+static void __attribute__ ((__unused__))
+dump_udccs0(const char *label)
+{
+ u32 udccs0 = UDCCS0;
+
+ DMSG("%s %s %02X =%s%s%s%s%s%s%s%s\n",
+ label, state_name[the_controller->ep0state], udccs0,
+ (udccs0 & UDCCS0_SA) ? " sa" : "",
+ (udccs0 & UDCCS0_RNE) ? " rne" : "",
+ (udccs0 & UDCCS0_FST) ? " fst" : "",
+ (udccs0 & UDCCS0_SST) ? " sst" : "",
+ (udccs0 & UDCCS0_DRWF) ? " dwrf" : "",
+ (udccs0 & UDCCS0_FTF) ? " ftf" : "",
+ (udccs0 & UDCCS0_IPR) ? " ipr" : "",
+ (udccs0 & UDCCS0_OPR) ? " opr" : "");
+}
+
+static void __attribute__ ((__unused__))
+dump_state(struct pxa2xx_udc *dev)
+{
+ u32 tmp;
+ unsigned i;
+
+ DMSG("%s %s, uicr %02X.%02X, usir %02X.%02x, ufnr %02X.%02X\n",
+ is_usb_connected() ? "host " : "disconnected",
+ state_name[dev->ep0state],
+ UICR1, UICR0, USIR1, USIR0, UFNRH, UFNRL);
+ dump_udccr("udccr");
+ if (dev->has_cfr) {
+ tmp = UDCCFR;
+ DMSG("udccfr %02X =%s%s\n", tmp,
+ (tmp & UDCCFR_AREN) ? " aren" : "",
+ (tmp & UDCCFR_ACM) ? " acm" : "");
+ }
+
+ if (!dev->driver) {
+ DMSG("no gadget driver bound\n");
+ return;
+ } else
+ DMSG("ep0 driver '%s'\n", dev->driver->driver.name);
+
+ if (!is_usb_connected())
+ return;
+
+ dump_udccs0 ("udccs0");
+ DMSG("ep0 IN %lu/%lu, OUT %lu/%lu\n",
+ dev->stats.write.bytes, dev->stats.write.ops,
+ dev->stats.read.bytes, dev->stats.read.ops);
+
+ for (i = 1; i < PXA_UDC_NUM_ENDPOINTS; i++) {
+ if (dev->ep [i].desc == 0)
+ continue;
+ DMSG ("udccs%d = %02x\n", i, *dev->ep->reg_udccs);
+ }
+}
+
+#else
+
+#define DMSG(stuff...) do{}while(0)
+
+#define dump_udccr(x) do{}while(0)
+#define dump_udccs0(x) do{}while(0)
+#define dump_state(x) do{}while(0)
+
+#define UDC_DEBUG ((unsigned)0)
+
+#endif
+
+#define DBG(lvl, stuff...) do{if ((lvl) <= UDC_DEBUG) DMSG(stuff);}while(0)
+
+#define WARN(stuff...) printk(KERN_WARNING "udc: " stuff)
+#define INFO(stuff...) printk(KERN_INFO "udc: " stuff)
+
+
+#endif /* __LINUX_USB_GADGET_PXA2XX_H */