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USB: Rework usb_kbd.c

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* Support dynamic allocation of devices
* Passing data via usb device privptr
* Reorder functions to avoid forward declarations
* Introduce generic polling mechanism to fix musb and ehci-hcd breakage
  due to using "extern new;" to access keyboard driver data!

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Cc: Remy Bohmer <linux@bohmer.net>
Cc: Wolfgang Denk <wd@denx.de>
This commit is contained in:
Marek Vasut
2011-10-10 16:34:26 +01:00
committed by Remy Bohmer
parent 48c8073ec9
commit 9a8c72a6c4
1 changed files with 382 additions and 319 deletions
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667
common/usb_kbd.c
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@@ -25,12 +25,18 @@
* *
*/ */
#include <common.h> #include <common.h>
#include <malloc.h>
#include <stdio_dev.h> #include <stdio_dev.h>
#include <asm/byteorder.h> #include <asm/byteorder.h>
#include <usb.h> #include <usb.h>
#undef USB_KBD_DEBUG #ifdef USB_KBD_DEBUG
#define USB_KBD_PRINTF(fmt, args...) printf(fmt, ##args)
#else
#define USB_KBD_PRINTF(fmt, args...)
#endif
/* /*
* If overwrite_console returns 1, the stdin, stderr and stdout * If overwrite_console returns 1, the stdin, stderr and stdout
* are switched to the serial port, else the settings in the * are switched to the serial port, else the settings in the
@@ -45,13 +51,7 @@ int overwrite_console(void)
} }
#endif #endif
#ifdef USB_KBD_DEBUG /* Keyboard sampling rate */
#define USB_KBD_PRINTF(fmt, args...) printf(fmt, ##args)
#else
#define USB_KBD_PRINTF(fmt, args...)
#endif
#define REPEAT_RATE (40 / 4) /* 40msec -> 25cps */ #define REPEAT_RATE (40 / 4) /* 40msec -> 25cps */
#define REPEAT_DELAY 10 /* 10 x REPEAT_RATE = 400msec */ #define REPEAT_DELAY 10 /* 10 x REPEAT_RATE = 400msec */
@@ -59,50 +59,257 @@ int overwrite_console(void)
#define CAPS_LOCK 0x39 #define CAPS_LOCK 0x39
#define SCROLL_LOCK 0x47 #define SCROLL_LOCK 0x47
/* Modifier bits */ /* Modifier bits */
#define LEFT_CNTR 0 #define LEFT_CNTR (1 << 0)
#define LEFT_SHIFT 1 #define LEFT_SHIFT (1 << 1)
#define LEFT_ALT 2 #define LEFT_ALT (1 << 2)
#define LEFT_GUI 3 #define LEFT_GUI (1 << 3)
#define RIGHT_CNTR 4 #define RIGHT_CNTR (1 << 4)
#define RIGHT_SHIFT 5 #define RIGHT_SHIFT (1 << 5)
#define RIGHT_ALT 6 #define RIGHT_ALT (1 << 6)
#define RIGHT_GUI 7 #define RIGHT_GUI (1 << 7)
#define USB_KBD_BUFFER_LEN 0x20 /* size of the keyboardbuffer */ /* Size of the keyboard buffer */
#define USB_KBD_BUFFER_LEN 0x20
static char usb_kbd_buffer[USB_KBD_BUFFER_LEN]; /* Device name */
static int usb_in_pointer;
static int usb_out_pointer;
unsigned char new[8];
unsigned char old[8];
int repeat_delay;
#define DEVNAME "usbkbd" #define DEVNAME "usbkbd"
static unsigned char num_lock;
static unsigned char caps_lock;
static unsigned char scroll_lock;
static unsigned char ctrl;
static unsigned char leds __attribute__((aligned(0x4))); /* Keyboard maps */
static const unsigned char usb_kbd_numkey[] = {
static unsigned char usb_kbd_numkey[] = {
'1', '2', '3', '4', '5', '6', '7', '8', '9', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '0',
'\r', 0x1b, '\b', '\t', ' ', '-', '=', '[', ']', '\r', 0x1b, '\b', '\t', ' ', '-', '=', '[', ']',
'\\', '#', ';', '\'', '`', ',', '.', '/' '\\', '#', ';', '\'', '`', ',', '.', '/'
}; };
static unsigned char usb_kbd_numkey_shifted[] = { static const unsigned char usb_kbd_numkey_shifted[] = {
'!', '@', '#', '$', '%', '^', '&', '*', '(', ')', '!', '@', '#', '$', '%', '^', '&', '*', '(', ')',
'\r', 0x1b, '\b', '\t', ' ', '_', '+', '{', '}', '\r', 0x1b, '\b', '\t', ' ', '_', '+', '{', '}',
'|', '~', ':', '"', '~', '<', '>', '?' '|', '~', ':', '"', '~', '<', '>', '?'
}; };
static int usb_kbd_irq_worker(struct usb_device *dev); /*
* NOTE: It's important for the NUM, CAPS, SCROLL-lock bits to be in this
* order. See usb_kbd_setled() function!
*/
#define USB_KBD_NUMLOCK (1 << 0)
#define USB_KBD_CAPSLOCK (1 << 1)
#define USB_KBD_SCROLLLOCK (1 << 2)
#define USB_KBD_CTRL (1 << 3)
/****************************************************************** #define USB_KBD_LEDMASK \
* Interrupt polling (USB_KBD_NUMLOCK | USB_KBD_CAPSLOCK | USB_KBD_SCROLLLOCK)
******************************************************************/
struct usb_kbd_pdata {
uint32_t repeat_delay;
uint32_t usb_in_pointer;
uint32_t usb_out_pointer;
uint8_t usb_kbd_buffer[USB_KBD_BUFFER_LEN];
uint8_t new[8];
uint8_t old[8];
uint8_t flags;
};
/* Generic keyboard event polling. */
void usb_kbd_generic_poll(void)
{
struct stdio_dev *dev;
struct usb_device *usb_kbd_dev;
struct usb_kbd_pdata *data;
struct usb_interface *iface;
struct usb_endpoint_descriptor *ep;
int pipe;
int maxp;
/* Get the pointer to USB Keyboard device pointer */
dev = stdio_get_by_name(DEVNAME);
usb_kbd_dev = (struct usb_device *)dev->priv;
data = usb_kbd_dev->privptr;
iface = &usb_kbd_dev->config.if_desc[0];
ep = &iface->ep_desc[0];
pipe = usb_rcvintpipe(usb_kbd_dev, ep->bEndpointAddress);
/* Submit a interrupt transfer request */
maxp = usb_maxpacket(usb_kbd_dev, pipe);
usb_submit_int_msg(usb_kbd_dev, pipe, data->new,
maxp > 8 ? 8 : maxp, ep->bInterval);
}
/* Puts character in the queue and sets up the in and out pointer. */
static void usb_kbd_put_queue(struct usb_kbd_pdata *data, char c)
{
if (data->usb_in_pointer == USB_KBD_BUFFER_LEN - 1) {
/* Check for buffer full. */
if (data->usb_out_pointer == 0)
return;
data->usb_in_pointer = 0;
} else {
/* Check for buffer full. */
if (data->usb_in_pointer == data->usb_out_pointer - 1)
return;
data->usb_in_pointer++;
}
data->usb_kbd_buffer[data->usb_in_pointer] = c;
}
/*
* Set the LEDs. Since this is used in the irq routine, the control job is
* issued with a timeout of 0. This means, that the job is queued without
* waiting for job completion.
*/
static void usb_kbd_setled(struct usb_device *dev)
{
struct usb_interface *iface = &dev->config.if_desc[0];
struct usb_kbd_pdata *data = dev->privptr;
uint32_t leds = data->flags & USB_KBD_LEDMASK;
usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
USB_REQ_SET_REPORT, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
0x200, iface->desc.bInterfaceNumber, (void *)&leds, 1, 0);
}
#define CAPITAL_MASK 0x20
/* Translate the scancode in ASCII */
static int usb_kbd_translate(struct usb_kbd_pdata *data, unsigned char scancode,
unsigned char modifier, int pressed)
{
uint8_t keycode = 0;
/* Key released */
if (pressed == 0) {
data->repeat_delay = 0;
return 0;
}
if (pressed == 2) {
data->repeat_delay++;
if (data->repeat_delay < REPEAT_DELAY)
return 0;
data->repeat_delay = REPEAT_DELAY;
}
/* Alphanumeric values */
if ((scancode > 3) && (scancode <= 0x1d)) {
keycode = scancode - 4 + 'a';
if (data->flags & USB_KBD_CAPSLOCK)
keycode &= ~CAPITAL_MASK;
if (modifier & (LEFT_SHIFT | RIGHT_SHIFT)) {
/* Handle CAPSLock + Shift pressed simultaneously */
if (keycode & CAPITAL_MASK)
keycode &= ~CAPITAL_MASK;
else
keycode |= CAPITAL_MASK;
}
}
if ((scancode > 0x1d) && (scancode < 0x3a)) {
/* Shift pressed */
if (modifier & (LEFT_SHIFT | RIGHT_SHIFT))
keycode = usb_kbd_numkey_shifted[scancode - 0x1e];
else
keycode = usb_kbd_numkey[scancode - 0x1e];
}
if (data->flags & USB_KBD_CTRL)
keycode = scancode - 0x3;
if (pressed == 1) {
if (scancode == NUM_LOCK) {
data->flags ^= USB_KBD_NUMLOCK;
return 1;
}
if (scancode == CAPS_LOCK) {
data->flags ^= USB_KBD_CAPSLOCK;
return 1;
}
if (scancode == SCROLL_LOCK) {
data->flags ^= USB_KBD_SCROLLLOCK;
return 1;
}
}
/* Report keycode if any */
if (keycode) {
USB_KBD_PRINTF("%c", keycode);
usb_kbd_put_queue(data, keycode);
}
return 0;
}
static uint32_t usb_kbd_service_key(struct usb_device *dev, int i, int up)
{
uint32_t res = 0;
struct usb_kbd_pdata *data = dev->privptr;
uint8_t *new;
uint8_t *old;
if (up) {
new = data->old;
old = data->new;
} else {
new = data->new;
old = data->old;
}
if ((old[i] > 3) && (memscan(new + 2, old[i], 6) == new + 8))
res |= usb_kbd_translate(data, old[i], data->new[0], up);
return res;
}
/* Interrupt service routine */
static int usb_kbd_irq_worker(struct usb_device *dev)
{
struct usb_kbd_pdata *data = dev->privptr;
int i, res = 0;
/* No combo key pressed */
if (data->new[0] == 0x00)
data->flags &= ~USB_KBD_CTRL;
/* Left or Right Ctrl pressed */
else if ((data->new[0] == LEFT_CNTR) || (data->new[0] == RIGHT_CNTR))
data->flags |= USB_KBD_CTRL;
for (i = 2; i < 8; i++) {
res |= usb_kbd_service_key(dev, i, 0);
res |= usb_kbd_service_key(dev, i, 1);
}
/* Key is still pressed */
if ((data->new[2] > 3) && (data->old[2] == data->new[2]))
res |= usb_kbd_translate(data, data->new[2], data->new[0], 2);
if (res == 1)
usb_kbd_setled(dev);
memcpy(data->old, data->new, 8);
return 1;
}
/* Keyboard interrupt handler */
static int usb_kbd_irq(struct usb_device *dev)
{
if ((dev->irq_status != 0) || (dev->irq_act_len != 8)) {
USB_KBD_PRINTF("USB KBD: Error %lX, len %d\n",
dev->irq_status, dev->irq_act_len);
return 1;
}
return usb_kbd_irq_worker(dev);
}
/* Interrupt polling */
static inline void usb_kbd_poll_for_event(struct usb_device *dev) static inline void usb_kbd_poll_for_event(struct usb_device *dev)
{ {
#if defined(CONFIG_SYS_USB_EVENT_POLL) #if defined(CONFIG_SYS_USB_EVENT_POLL)
@@ -110,145 +317,186 @@ static inline void usb_kbd_poll_for_event(struct usb_device *dev)
usb_kbd_irq_worker(dev); usb_kbd_irq_worker(dev);
#elif defined(CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP) #elif defined(CONFIG_SYS_USB_EVENT_POLL_VIA_CONTROL_EP)
struct usb_interface *iface; struct usb_interface *iface;
struct usb_kbd_pdata *data = dev->privptr;
iface = &dev->config.if_desc[0]; iface = &dev->config.if_desc[0];
usb_get_report(dev, iface->desc.bInterfaceNumber, usb_get_report(dev, iface->desc.bInterfaceNumber,
1, 1, new, sizeof(new)); 1, 1, data->new, sizeof(data->new));
if (memcmp(old, new, sizeof(new))) if (memcmp(data->old, data->new, sizeof(data->new)))
usb_kbd_irq_worker(dev); usb_kbd_irq_worker(dev);
#endif #endif
} }
/******************************************************************
* Queue handling
******************************************************************/
/* puts character in the queue and sets up the in and out pointer */
static void usb_kbd_put_queue(char data)
{
if ((usb_in_pointer+1) == USB_KBD_BUFFER_LEN) {
if (usb_out_pointer == 0)
return; /* buffer full */
else
usb_in_pointer = 0;
} else {
if ((usb_in_pointer+1) == usb_out_pointer)
return; /* buffer full */
usb_in_pointer++;
}
usb_kbd_buffer[usb_in_pointer] = data;
return;
}
/* test if a character is in the queue */ /* test if a character is in the queue */
static int usb_kbd_testc(void) static int usb_kbd_testc(void)
{ {
struct stdio_dev *dev; struct stdio_dev *dev;
struct usb_device *usb_kbd_dev; struct usb_device *usb_kbd_dev;
struct usb_kbd_pdata *data;
dev = stdio_get_by_name("usbkbd"); dev = stdio_get_by_name(DEVNAME);
usb_kbd_dev = (struct usb_device *)dev->priv; usb_kbd_dev = (struct usb_device *)dev->priv;
data = usb_kbd_dev->privptr;
usb_kbd_poll_for_event(usb_kbd_dev); usb_kbd_poll_for_event(usb_kbd_dev);
if (usb_in_pointer == usb_out_pointer) return !(data->usb_in_pointer == data->usb_out_pointer);
return 0; /* no data */
else
return 1;
} }
/* gets the character from the queue */ /* gets the character from the queue */
static int usb_kbd_getc(void) static int usb_kbd_getc(void)
{ {
char c;
struct stdio_dev *dev; struct stdio_dev *dev;
struct usb_device *usb_kbd_dev; struct usb_device *usb_kbd_dev;
struct usb_kbd_pdata *data;
dev = stdio_get_by_name("usbkbd"); dev = stdio_get_by_name(DEVNAME);
usb_kbd_dev = (struct usb_device *)dev->priv; usb_kbd_dev = (struct usb_device *)dev->priv;
data = usb_kbd_dev->privptr;
while (usb_in_pointer == usb_out_pointer) while (data->usb_in_pointer == data->usb_out_pointer)
usb_kbd_poll_for_event(usb_kbd_dev); usb_kbd_poll_for_event(usb_kbd_dev);
if ((usb_out_pointer+1) == USB_KBD_BUFFER_LEN) if (data->usb_out_pointer == USB_KBD_BUFFER_LEN - 1)
usb_out_pointer = 0; data->usb_out_pointer = 0;
else else
usb_out_pointer++; data->usb_out_pointer++;
c = usb_kbd_buffer[usb_out_pointer];
return (int)c;
return data->usb_kbd_buffer[data->usb_out_pointer];
} }
/* forward decleration */ /* probes the USB device dev for keyboard type. */
static int usb_kbd_probe(struct usb_device *dev, unsigned int ifnum); static int usb_kbd_probe(struct usb_device *dev, unsigned int ifnum)
{
struct usb_interface *iface;
struct usb_endpoint_descriptor *ep;
struct usb_kbd_pdata *data;
int pipe, maxp;
/* search for keyboard and register it if found */ if (dev->descriptor.bNumConfigurations != 1)
return 0;
iface = &dev->config.if_desc[ifnum];
if (iface->desc.bInterfaceClass != 3)
return 0;
if (iface->desc.bInterfaceSubClass != 1)
return 0;
if (iface->desc.bInterfaceProtocol != 1)
return 0;
if (iface->desc.bNumEndpoints != 1)
return 0;
ep = &iface->ep_desc[0];
/* Check if endpoint 1 is interrupt endpoint */
if (!(ep->bEndpointAddress & 0x80))
return 0;
if ((ep->bmAttributes & 3) != 3)
return 0;
USB_KBD_PRINTF("USB KBD: found set protocol...\n");
data = malloc(sizeof(struct usb_kbd_pdata));
if (!data) {
printf("USB KBD: Error allocating private data\n");
return 0;
}
/* Clear private data */
memset(data, 0, sizeof(struct usb_kbd_pdata));
/* Insert private data into USB device structure */
dev->privptr = data;
/* Set IRQ handler */
dev->irq_handle = usb_kbd_irq;
pipe = usb_rcvintpipe(dev, ep->bEndpointAddress);
maxp = usb_maxpacket(dev, pipe);
/* We found a USB Keyboard, install it. */
usb_set_protocol(dev, iface->desc.bInterfaceNumber, 0);
USB_KBD_PRINTF("USB KBD: found set idle...\n");
usb_set_idle(dev, iface->desc.bInterfaceNumber, REPEAT_RATE, 0);
USB_KBD_PRINTF("USB KBD: enable interrupt pipe...\n");
usb_submit_int_msg(dev, pipe, data->new, maxp > 8 ? 8 : maxp,
ep->bInterval);
/* Success. */
return 1;
}
/* Search for keyboard and register it if found. */
int drv_usb_kbd_init(void) int drv_usb_kbd_init(void)
{ {
int error, i;
struct stdio_dev usb_kbd_dev, *old_dev; struct stdio_dev usb_kbd_dev, *old_dev;
struct usb_device *dev; struct usb_device *dev;
char *stdinname = getenv("stdin"); char *stdinname = getenv("stdin");
int error, i;
usb_in_pointer = 0; /* Scan all USB Devices */
usb_out_pointer = 0;
/* scan all USB Devices */
for (i = 0; i < USB_MAX_DEVICE; i++) { for (i = 0; i < USB_MAX_DEVICE; i++) {
dev = usb_get_dev_index(i); /* get device */ /* Get USB device. */
if (dev == NULL) dev = usb_get_dev_index(i);
if (!dev)
return -1; return -1;
if (dev->devnum != -1) {
/* Ok, we found a keyboard */ if (dev->devnum == -1)
if (usb_kbd_probe(dev, 0) == 1) { continue;
/* check, if it is already registered */
USB_KBD_PRINTF("USB KBD found set up " /* Try probing the keyboard */
"device.\n"); if (usb_kbd_probe(dev, 0) != 1)
continue;
/* We found a keyboard, check if it is already registered. */
USB_KBD_PRINTF("USB KBD: found set up device.\n");
old_dev = stdio_get_by_name(DEVNAME); old_dev = stdio_get_by_name(DEVNAME);
if (old_dev) { if (old_dev) {
/* already registered, just return ok */ /* Already registered, just return ok. */
USB_KBD_PRINTF("USB KBD is already " USB_KBD_PRINTF("USB KBD: is already registered.\n");
"registered.\n");
return 1; return 1;
} }
/* register the keyboard */
USB_KBD_PRINTF("USB KBD register.\n"); /* Register the keyboard */
memset(&usb_kbd_dev, 0, USB_KBD_PRINTF("USB KBD: register.\n");
sizeof(struct stdio_dev)); memset(&usb_kbd_dev, 0, sizeof(struct stdio_dev));
strcpy(usb_kbd_dev.name, DEVNAME); strcpy(usb_kbd_dev.name, DEVNAME);
usb_kbd_dev.flags = DEV_FLAGS_INPUT | usb_kbd_dev.flags = DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
DEV_FLAGS_SYSTEM;
usb_kbd_dev.putc = NULL; usb_kbd_dev.putc = NULL;
usb_kbd_dev.puts = NULL; usb_kbd_dev.puts = NULL;
usb_kbd_dev.getc = usb_kbd_getc; usb_kbd_dev.getc = usb_kbd_getc;
usb_kbd_dev.tstc = usb_kbd_testc; usb_kbd_dev.tstc = usb_kbd_testc;
usb_kbd_dev.priv = (void *)dev; usb_kbd_dev.priv = (void *)dev;
error = stdio_register(&usb_kbd_dev); error = stdio_register(&usb_kbd_dev);
if (error == 0) { if (error)
/* return error;
* check if this is the standard
* input device /* Check if this is the standard input device. */
*/ if (strcmp(stdinname, DEVNAME))
if (strcmp(stdinname, DEVNAME) == 0) { return 1;
/* reassign the console */
/* Reassign the console */
if (overwrite_console()) if (overwrite_console())
return 1; return 1;
error = console_assign(stdin,
DEVNAME); error = console_assign(stdin, DEVNAME);
if (error == 0) if (error)
return 1;
else
return error; return error;
}
return 1; return 1;
} }
return error;
} /* No USB Keyboard found */
}
}
/* no USB Keyboard found */
return -1; return -1;
} }
/* Deregister the keyboard. */
/* deregistering the keyboard */
int usb_kbd_deregister(void) int usb_kbd_deregister(void)
{ {
#ifdef CONFIG_SYS_STDIO_DEREGISTER #ifdef CONFIG_SYS_STDIO_DEREGISTER
@@ -258,191 +506,6 @@ int usb_kbd_deregister(void)
#endif #endif
} }
/**************************************************************************
* Low Level drivers
*/
/* set the LEDs. Since this is used in the irq routine, the control job
is issued with a timeout of 0. This means, that the job is queued without
waiting for job completion */
static void usb_kbd_setled(struct usb_device *dev)
{
struct usb_interface *iface;
iface = &dev->config.if_desc[0];
leds = 0;
if (scroll_lock != 0)
leds |= 1;
leds <<= 1;
if (caps_lock != 0)
leds |= 1;
leds <<= 1;
if (num_lock != 0)
leds |= 1;
usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
USB_REQ_SET_REPORT, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
0x200, iface->desc.bInterfaceNumber, (void *)&leds, 1, 0);
}
#define CAPITAL_MASK 0x20
/* Translate the scancode in ASCII */
static int usb_kbd_translate(unsigned char scancode, unsigned char modifier,
int pressed)
{
unsigned char keycode;
if (pressed == 0) {
/* key released */
repeat_delay = 0;
return 0;
}
if (pressed == 2) {
repeat_delay++;
if (repeat_delay < REPEAT_DELAY)
return 0;
repeat_delay = REPEAT_DELAY;
}
keycode = 0;
if ((scancode > 3) && (scancode <= 0x1d)) { /* alpha numeric values */
keycode = scancode - 4 + 0x61;
if (caps_lock)
/* switch to capital Letters */
keycode &= ~CAPITAL_MASK;
if (((modifier&(1 << LEFT_SHIFT)) != 0) ||
((modifier&(1 << RIGHT_SHIFT)) != 0)) {
if (keycode & CAPITAL_MASK)
/* switch to capital Letters */
keycode &= ~CAPITAL_MASK;
else
/* switch to non capital Letters */
keycode |= CAPITAL_MASK;
}
}
if ((scancode > 0x1d) && (scancode < 0x3A)) {
if (((modifier&(1 << LEFT_SHIFT)) != 0) ||
((modifier&(1 << RIGHT_SHIFT)) != 0)) /* shifted */
keycode = usb_kbd_numkey_shifted[scancode-0x1e];
else /* non shifted */
keycode = usb_kbd_numkey[scancode-0x1e];
}
if (ctrl)
keycode = scancode - 0x3;
if (pressed == 1) {
if (scancode == NUM_LOCK) {
num_lock = ~num_lock;
return 1;
}
if (scancode == CAPS_LOCK) {
caps_lock = ~caps_lock;
return 1;
}
if (scancode == SCROLL_LOCK) {
scroll_lock = ~scroll_lock;
return 1;
}
}
if (keycode != 0) {
USB_KBD_PRINTF("%c", keycode);
usb_kbd_put_queue(keycode);
}
return 0;
}
/* Interrupt service routine */
static int usb_kbd_irq_worker(struct usb_device *dev)
{
int i, res;
res = 0;
switch (new[0]) {
case 0x0: /* No combo key pressed */
ctrl = 0;
break;
case 0x01: /* Left Ctrl pressed */
case 0x10: /* Right Ctrl pressed */
ctrl = 1;
break;
}
for (i = 2; i < 8; i++) {
if (old[i] > 3 && memscan(&new[2], old[i], 6) == &new[8])
res |= usb_kbd_translate(old[i], new[0], 0);
if (new[i] > 3 && memscan(&old[2], new[i], 6) == &old[8])
res |= usb_kbd_translate(new[i], new[0], 1);
}
if ((new[2] > 3) && (old[2] == new[2])) /* still pressed */
res |= usb_kbd_translate(new[2], new[0], 2);
if (res == 1)
usb_kbd_setled(dev);
memcpy(&old[0], &new[0], 8);
return 1; /* install IRQ Handler again */
}
static int usb_kbd_irq(struct usb_device *dev)
{
if ((dev->irq_status != 0) || (dev->irq_act_len != 8)) {
USB_KBD_PRINTF("usb_keyboard Error %lX, len %d\n",
dev->irq_status, dev->irq_act_len);
return 1;
}
return usb_kbd_irq_worker(dev);
}
/* probes the USB device dev for keyboard type */
static int usb_kbd_probe(struct usb_device *dev, unsigned int ifnum)
{
struct usb_interface *iface;
struct usb_endpoint_descriptor *ep;
int pipe, maxp;
if (dev->descriptor.bNumConfigurations != 1)
return 0;
iface = &dev->config.if_desc[ifnum];
if (iface->desc.bInterfaceClass != 3)
return 0;
if (iface->desc.bInterfaceSubClass != 1)
return 0;
if (iface->desc.bInterfaceProtocol != 1)
return 0;
if (iface->desc.bNumEndpoints != 1)
return 0;
ep = &iface->ep_desc[0];
if (!(ep->bEndpointAddress & 0x80))
return 0;
if ((ep->bmAttributes & 3) != 3)
return 0;
USB_KBD_PRINTF("USB KBD found set protocol...\n");
/* ok, we found a USB Keyboard, install it */
/* usb_kbd_get_hid_desc(dev); */
usb_set_protocol(dev, iface->desc.bInterfaceNumber, 0);
USB_KBD_PRINTF("USB KBD found set idle...\n");
usb_set_idle(dev, iface->desc.bInterfaceNumber, REPEAT_RATE, 0);
memset(&new[0], 0, 8);
memset(&old[0], 0, 8);
repeat_delay = 0;
pipe = usb_rcvintpipe(dev, ep->bEndpointAddress);
maxp = usb_maxpacket(dev, pipe);
dev->irq_handle = usb_kbd_irq;
USB_KBD_PRINTF("USB KBD enable interrupt pipe...\n");
usb_submit_int_msg(dev, pipe, &new[0], maxp > 8 ? 8 : maxp,
ep->bInterval);
return 1;
}
#if 0 #if 0
struct usb_hid_descriptor { struct usb_hid_descriptor {
unsigned char bLength; unsigned char bLength;