/* dlfb keeps a list of urbs for efficient bulk transfers */
static void dlfb_urb_completion(struct urb *urb);
-static struct urb *dlfb_get_urb(struct dlfb_data *dev);
-static int dlfb_submit_urb(struct dlfb_data *dev, struct urb * urb, size_t len);
-static int dlfb_alloc_urb_list(struct dlfb_data *dev, int count, size_t size);
-static void dlfb_free_urb_list(struct dlfb_data *dev);
+static struct urb *dlfb_get_urb(struct dlfb_data *dlfb);
+static int dlfb_submit_urb(struct dlfb_data *dlfb, struct urb * urb, size_t len);
+static int dlfb_alloc_urb_list(struct dlfb_data *dlfb, int count, size_t size);
+static void dlfb_free_urb_list(struct dlfb_data *dlfb);
/*
* All DisplayLink bulk operations start with 0xAF, followed by specific code
* and then generates the appropriate command sequence that then drives the
* display controller.
*/
-static int dlfb_set_video_mode(struct dlfb_data *dev,
+static int dlfb_set_video_mode(struct dlfb_data *dlfb,
struct fb_var_screeninfo *var)
{
char *buf;
int writesize;
struct urb *urb;
- if (!atomic_read(&dev->usb_active))
+ if (!atomic_read(&dlfb->usb_active))
return -EPERM;
- urb = dlfb_get_urb(dev);
+ urb = dlfb_get_urb(dlfb);
if (!urb)
return -ENOMEM;
/* set base for 16bpp segment to 0 */
wrptr = dlfb_set_base16bpp(wrptr, 0);
/* set base for 8bpp segment to end of fb */
- wrptr = dlfb_set_base8bpp(wrptr, dev->info->fix.smem_len);
+ wrptr = dlfb_set_base8bpp(wrptr, dlfb->info->fix.smem_len);
wrptr = dlfb_set_vid_cmds(wrptr, var);
wrptr = dlfb_blanking(wrptr, FB_BLANK_UNBLANK);
writesize = wrptr - buf;
- retval = dlfb_submit_urb(dev, urb, writesize);
+ retval = dlfb_submit_urb(dlfb, urb, writesize);
- dev->blank_mode = FB_BLANK_UNBLANK;
+ dlfb->blank_mode = FB_BLANK_UNBLANK;
return retval;
}
* (that we can only write to, slowly, and can never read), and (optionally)
* our shadow copy that tracks what's been sent to that hardware buffer.
*/
-static int dlfb_render_hline(struct dlfb_data *dev, struct urb **urb_ptr,
+static int dlfb_render_hline(struct dlfb_data *dlfb, struct urb **urb_ptr,
const char *front, char **urb_buf_ptr,
u32 byte_offset, u32 byte_width,
int *ident_ptr, int *sent_ptr)
{
const u8 *line_start, *line_end, *next_pixel;
- u32 dev_addr = dev->base16 + byte_offset;
+ u32 dev_addr = dlfb->base16 + byte_offset;
struct urb *urb = *urb_ptr;
u8 *cmd = *urb_buf_ptr;
u8 *cmd_end = (u8 *) urb->transfer_buffer + urb->transfer_buffer_length;
next_pixel = line_start;
line_end = next_pixel + byte_width;
- if (dev->backing_buffer) {
+ if (dlfb->backing_buffer) {
int offset;
- const u8 *back_start = (u8 *) (dev->backing_buffer
+ const u8 *back_start = (u8 *) (dlfb->backing_buffer
+ byte_offset);
*ident_ptr += dlfb_trim_hline(back_start, &next_pixel,
if (cmd >= cmd_end) {
int len = cmd - (u8 *) urb->transfer_buffer;
- if (dlfb_submit_urb(dev, urb, len))
+ if (dlfb_submit_urb(dlfb, urb, len))
return 1; /* lost pixels is set */
*sent_ptr += len;
- urb = dlfb_get_urb(dev);
+ urb = dlfb_get_urb(dlfb);
if (!urb)
return 1; /* lost_pixels is set */
*urb_ptr = urb;
return 0;
}
-static int dlfb_handle_damage(struct dlfb_data *dev, int x, int y,
+static int dlfb_handle_damage(struct dlfb_data *dlfb, int x, int y,
int width, int height, char *data)
{
int i, ret;
x = aligned_x;
if ((width <= 0) ||
- (x + width > dev->info->var.xres) ||
- (y + height > dev->info->var.yres))
+ (x + width > dlfb->info->var.xres) ||
+ (y + height > dlfb->info->var.yres))
return -EINVAL;
- if (!atomic_read(&dev->usb_active))
+ if (!atomic_read(&dlfb->usb_active))
return 0;
- urb = dlfb_get_urb(dev);
+ urb = dlfb_get_urb(dlfb);
if (!urb)
return 0;
cmd = urb->transfer_buffer;
for (i = y; i < y + height ; i++) {
- const int line_offset = dev->info->fix.line_length * i;
+ const int line_offset = dlfb->info->fix.line_length * i;
const int byte_offset = line_offset + (x * BPP);
- if (dlfb_render_hline(dev, &urb,
- (char *) dev->info->fix.smem_start,
+ if (dlfb_render_hline(dlfb, &urb,
+ (char *) dlfb->info->fix.smem_start,
&cmd, byte_offset, width * BPP,
&bytes_identical, &bytes_sent))
goto error;
if (cmd > (char *) urb->transfer_buffer) {
/* Send partial buffer remaining before exiting */
int len = cmd - (char *) urb->transfer_buffer;
- ret = dlfb_submit_urb(dev, urb, len);
+ ret = dlfb_submit_urb(dlfb, urb, len);
bytes_sent += len;
} else
dlfb_urb_completion(urb);
error:
- atomic_add(bytes_sent, &dev->bytes_sent);
- atomic_add(bytes_identical, &dev->bytes_identical);
- atomic_add(width*height*2, &dev->bytes_rendered);
+ atomic_add(bytes_sent, &dlfb->bytes_sent);
+ atomic_add(bytes_identical, &dlfb->bytes_identical);
+ atomic_add(width*height*2, &dlfb->bytes_rendered);
end_cycles = get_cycles();
atomic_add(((unsigned int) ((end_cycles - start_cycles)
>> 10)), /* Kcycles */
- &dev->cpu_kcycles_used);
+ &dlfb->cpu_kcycles_used);
return 0;
}
size_t count, loff_t *ppos)
{
ssize_t result;
- struct dlfb_data *dev = info->par;
+ struct dlfb_data *dlfb = info->par;
u32 offset = (u32) *ppos;
result = fb_sys_write(info, buf, count, ppos);
int lines = min((u32)((result / info->fix.line_length) + 1),
(u32)info->var.yres);
- dlfb_handle_damage(dev, 0, start, info->var.xres,
+ dlfb_handle_damage(dlfb, 0, start, info->var.xres,
lines, info->screen_base);
}
const struct fb_copyarea *area)
{
- struct dlfb_data *dev = info->par;
+ struct dlfb_data *dlfb = info->par;
sys_copyarea(info, area);
- dlfb_handle_damage(dev, area->dx, area->dy,
+ dlfb_handle_damage(dlfb, area->dx, area->dy,
area->width, area->height, info->screen_base);
}
static void dlfb_ops_imageblit(struct fb_info *info,
const struct fb_image *image)
{
- struct dlfb_data *dev = info->par;
+ struct dlfb_data *dlfb = info->par;
sys_imageblit(info, image);
- dlfb_handle_damage(dev, image->dx, image->dy,
+ dlfb_handle_damage(dlfb, image->dx, image->dy,
image->width, image->height, info->screen_base);
}
static void dlfb_ops_fillrect(struct fb_info *info,
const struct fb_fillrect *rect)
{
- struct dlfb_data *dev = info->par;
+ struct dlfb_data *dlfb = info->par;
sys_fillrect(info, rect);
- dlfb_handle_damage(dev, rect->dx, rect->dy, rect->width,
+ dlfb_handle_damage(dlfb, rect->dx, rect->dy, rect->width,
rect->height, info->screen_base);
}
{
struct page *cur;
struct fb_deferred_io *fbdefio = info->fbdefio;
- struct dlfb_data *dev = info->par;
+ struct dlfb_data *dlfb = info->par;
struct urb *urb;
char *cmd;
cycles_t start_cycles, end_cycles;
if (!fb_defio)
return;
- if (!atomic_read(&dev->usb_active))
+ if (!atomic_read(&dlfb->usb_active))
return;
start_cycles = get_cycles();
- urb = dlfb_get_urb(dev);
+ urb = dlfb_get_urb(dlfb);
if (!urb)
return;
/* walk the written page list and render each to device */
list_for_each_entry(cur, &fbdefio->pagelist, lru) {
- if (dlfb_render_hline(dev, &urb, (char *) info->fix.smem_start,
+ if (dlfb_render_hline(dlfb, &urb, (char *) info->fix.smem_start,
&cmd, cur->index << PAGE_SHIFT,
PAGE_SIZE, &bytes_identical, &bytes_sent))
goto error;
if (cmd > (char *) urb->transfer_buffer) {
/* Send partial buffer remaining before exiting */
int len = cmd - (char *) urb->transfer_buffer;
- dlfb_submit_urb(dev, urb, len);
+ dlfb_submit_urb(dlfb, urb, len);
bytes_sent += len;
} else
dlfb_urb_completion(urb);
error:
- atomic_add(bytes_sent, &dev->bytes_sent);
- atomic_add(bytes_identical, &dev->bytes_identical);
- atomic_add(bytes_rendered, &dev->bytes_rendered);
+ atomic_add(bytes_sent, &dlfb->bytes_sent);
+ atomic_add(bytes_identical, &dlfb->bytes_identical);
+ atomic_add(bytes_rendered, &dlfb->bytes_rendered);
end_cycles = get_cycles();
atomic_add(((unsigned int) ((end_cycles - start_cycles)
>> 10)), /* Kcycles */
- &dev->cpu_kcycles_used);
+ &dlfb->cpu_kcycles_used);
}
-static int dlfb_get_edid(struct dlfb_data *dev, char *edid, int len)
+static int dlfb_get_edid(struct dlfb_data *dlfb, char *edid, int len)
{
int i;
int ret;
return 0;
for (i = 0; i < len; i++) {
- ret = usb_control_msg(dev->udev,
- usb_rcvctrlpipe(dev->udev, 0), 0x02,
+ ret = usb_control_msg(dlfb->udev,
+ usb_rcvctrlpipe(dlfb->udev, 0), 0x02,
(0x80 | (0x02 << 5)), i << 8, 0xA1,
rbuf, 2, USB_CTRL_GET_TIMEOUT);
if (ret < 2) {
unsigned long arg)
{
- struct dlfb_data *dev = info->par;
+ struct dlfb_data *dlfb = info->par;
- if (!atomic_read(&dev->usb_active))
+ if (!atomic_read(&dlfb->usb_active))
return 0;
/* TODO: Update X server to get this from sysfs instead */
if (cmd == DLFB_IOCTL_RETURN_EDID) {
void __user *edid = (void __user *)arg;
- if (copy_to_user(edid, dev->edid, dev->edid_size))
+ if (copy_to_user(edid, dlfb->edid, dlfb->edid_size))
return -EFAULT;
return 0;
}
if (area.y > info->var.yres)
area.y = info->var.yres;
- dlfb_handle_damage(dev, area.x, area.y, area.w, area.h,
+ dlfb_handle_damage(dlfb, area.x, area.y, area.w, area.h,
info->screen_base);
}
*/
static int dlfb_ops_open(struct fb_info *info, int user)
{
- struct dlfb_data *dev = info->par;
+ struct dlfb_data *dlfb = info->par;
/*
* fbcon aggressively connects to first framebuffer it finds,
return -EBUSY;
/* If the USB device is gone, we don't accept new opens */
- if (dev->virtualized)
+ if (dlfb->virtualized)
return -ENODEV;
- dev->fb_count++;
+ dlfb->fb_count++;
- kref_get(&dev->kref);
+ kref_get(&dlfb->kref);
if (fb_defio && (info->fbdefio == NULL)) {
/* enable defio at last moment if not disabled by client */
}
pr_notice("open /dev/fb%d user=%d fb_info=%p count=%d\n",
- info->node, user, info, dev->fb_count);
+ info->node, user, info, dlfb->fb_count);
return 0;
}
*/
static void dlfb_free(struct kref *kref)
{
- struct dlfb_data *dev = container_of(kref, struct dlfb_data, kref);
+ struct dlfb_data *dlfb = container_of(kref, struct dlfb_data, kref);
- vfree(dev->backing_buffer);
- kfree(dev->edid);
- kfree(dev);
+ vfree(dlfb->backing_buffer);
+ kfree(dlfb->edid);
+ kfree(dlfb);
}
static void dlfb_release_urb_work(struct work_struct *work)
struct urb_node *unode = container_of(work, struct urb_node,
release_urb_work.work);
- up(&unode->dev->urbs.limit_sem);
+ up(&unode->dlfb->urbs.limit_sem);
}
-static void dlfb_free_framebuffer(struct dlfb_data *dev)
+static void dlfb_free_framebuffer(struct dlfb_data *dlfb)
{
- struct fb_info *info = dev->info;
+ struct fb_info *info = dlfb->info;
if (info) {
unregister_framebuffer(info);
fb_destroy_modelist(&info->modelist);
- dev->info = NULL;
+ dlfb->info = NULL;
/* Assume info structure is freed after this point */
framebuffer_release(info);
}
/* ref taken in probe() as part of registering framebfufer */
- kref_put(&dev->kref, dlfb_free);
+ kref_put(&dlfb->kref, dlfb_free);
}
static void dlfb_free_framebuffer_work(struct work_struct *work)
{
- struct dlfb_data *dev = container_of(work, struct dlfb_data,
+ struct dlfb_data *dlfb = container_of(work, struct dlfb_data,
free_framebuffer_work.work);
- dlfb_free_framebuffer(dev);
+ dlfb_free_framebuffer(dlfb);
}
/*
* Assumes caller is holding info->lock mutex (for open and release at least)
*/
static int dlfb_ops_release(struct fb_info *info, int user)
{
- struct dlfb_data *dev = info->par;
+ struct dlfb_data *dlfb = info->par;
- dev->fb_count--;
+ dlfb->fb_count--;
/* We can't free fb_info here - fbmem will touch it when we return */
- if (dev->virtualized && (dev->fb_count == 0))
- schedule_delayed_work(&dev->free_framebuffer_work, HZ);
+ if (dlfb->virtualized && (dlfb->fb_count == 0))
+ schedule_delayed_work(&dlfb->free_framebuffer_work, HZ);
- if ((dev->fb_count == 0) && (info->fbdefio)) {
+ if ((dlfb->fb_count == 0) && (info->fbdefio)) {
fb_deferred_io_cleanup(info);
kfree(info->fbdefio);
info->fbdefio = NULL;
}
pr_warn("released /dev/fb%d user=%d count=%d\n",
- info->node, user, dev->fb_count);
+ info->node, user, dlfb->fb_count);
- kref_put(&dev->kref, dlfb_free);
+ kref_put(&dlfb->kref, dlfb_free);
return 0;
}
static int dlfb_is_valid_mode(struct fb_videomode *mode,
struct fb_info *info)
{
- struct dlfb_data *dev = info->par;
+ struct dlfb_data *dlfb = info->par;
- if (mode->xres * mode->yres > dev->sku_pixel_limit) {
+ if (mode->xres * mode->yres > dlfb->sku_pixel_limit) {
pr_warn("%dx%d beyond chip capabilities\n",
mode->xres, mode->yres);
return 0;
static int dlfb_ops_set_par(struct fb_info *info)
{
- struct dlfb_data *dev = info->par;
+ struct dlfb_data *dlfb = info->par;
int result;
u16 *pix_framebuffer;
int i;
- result = dlfb_set_video_mode(dev, &info->var);
+ result = dlfb_set_video_mode(dlfb, &info->var);
- if ((result == 0) && (dev->fb_count == 0)) {
+ if ((result == 0) && (dlfb->fb_count == 0)) {
/* paint greenscreen */
for (i = 0; i < info->fix.smem_len / 2; i++)
pix_framebuffer[i] = 0x37e6;
- dlfb_handle_damage(dev, 0, 0, info->var.xres, info->var.yres,
+ dlfb_handle_damage(dlfb, 0, 0, info->var.xres, info->var.yres,
info->screen_base);
}
*/
static int dlfb_ops_blank(int blank_mode, struct fb_info *info)
{
- struct dlfb_data *dev = info->par;
+ struct dlfb_data *dlfb = info->par;
char *bufptr;
struct urb *urb;
pr_debug("/dev/fb%d FB_BLANK mode %d --> %d\n",
- info->node, dev->blank_mode, blank_mode);
+ info->node, dlfb->blank_mode, blank_mode);
- if ((dev->blank_mode == FB_BLANK_POWERDOWN) &&
+ if ((dlfb->blank_mode == FB_BLANK_POWERDOWN) &&
(blank_mode != FB_BLANK_POWERDOWN)) {
/* returning from powerdown requires a fresh modeset */
- dlfb_set_video_mode(dev, &info->var);
+ dlfb_set_video_mode(dlfb, &info->var);
}
- urb = dlfb_get_urb(dev);
+ urb = dlfb_get_urb(dlfb);
if (!urb)
return 0;
/* seems like a render op is needed to have blank change take effect */
bufptr = dlfb_dummy_render(bufptr);
- dlfb_submit_urb(dev, urb, bufptr -
+ dlfb_submit_urb(dlfb, urb, bufptr -
(char *) urb->transfer_buffer);
- dev->blank_mode = blank_mode;
+ dlfb->blank_mode = blank_mode;
return 0;
}
* Assumes &info->lock held by caller
* Assumes no active clients have framebuffer open
*/
-static int dlfb_realloc_framebuffer(struct dlfb_data *dev, struct fb_info *info)
+static int dlfb_realloc_framebuffer(struct dlfb_data *dlfb, struct fb_info *info)
{
int retval = -ENOMEM;
int old_len = info->fix.smem_len;
if (!new_back)
pr_info("No shadow/backing buffer allocated\n");
else {
- vfree(dev->backing_buffer);
- dev->backing_buffer = new_back;
+ vfree(dlfb->backing_buffer);
+ dlfb->backing_buffer = new_back;
}
}
* monspecs is NULL, and fb_var_screeninfo is set to safe VESA mode
* Returns 0 if successful
*/
-static int dlfb_setup_modes(struct dlfb_data *dev,
+static int dlfb_setup_modes(struct dlfb_data *dlfb,
struct fb_info *info,
char *default_edid, size_t default_edid_size)
{
*/
while (tries--) {
- i = dlfb_get_edid(dev, edid, EDID_LENGTH);
+ i = dlfb_get_edid(dlfb, edid, EDID_LENGTH);
if (i >= EDID_LENGTH)
fb_edid_to_monspecs(edid, &info->monspecs);
if (info->monspecs.modedb_len > 0) {
- dev->edid = edid;
- dev->edid_size = i;
+ dlfb->edid = edid;
+ dlfb->edid_size = i;
break;
}
}
pr_err("Unable to get valid EDID from device/display\n");
- if (dev->edid) {
- fb_edid_to_monspecs(dev->edid, &info->monspecs);
+ if (dlfb->edid) {
+ fb_edid_to_monspecs(dlfb->edid, &info->monspecs);
if (info->monspecs.modedb_len > 0)
pr_err("Using previously queried EDID\n");
}
fb_edid_to_monspecs(default_edid, &info->monspecs);
if (info->monspecs.modedb_len > 0) {
memcpy(edid, default_edid, default_edid_size);
- dev->edid = edid;
- dev->edid_size = default_edid_size;
+ dlfb->edid = edid;
+ dlfb->edid_size = default_edid_size;
pr_err("Using default/backup EDID\n");
}
}
}
/* If we have good mode and no active clients*/
- if ((default_vmode != NULL) && (dev->fb_count == 0)) {
+ if ((default_vmode != NULL) && (dlfb->fb_count == 0)) {
fb_videomode_to_var(&info->var, default_vmode);
dlfb_var_color_format(&info->var);
info->fix.line_length = info->var.xres *
(info->var.bits_per_pixel / 8);
- result = dlfb_realloc_framebuffer(dev, info);
+ result = dlfb_realloc_framebuffer(dlfb, info);
} else
result = -EINVAL;
error:
- if (edid && (dev->edid != edid))
+ if (edid && (dlfb->edid != edid))
kfree(edid);
if (info->dev)
static ssize_t metrics_bytes_rendered_show(struct device *fbdev,
struct device_attribute *a, char *buf) {
struct fb_info *fb_info = dev_get_drvdata(fbdev);
- struct dlfb_data *dev = fb_info->par;
+ struct dlfb_data *dlfb = fb_info->par;
return snprintf(buf, PAGE_SIZE, "%u\n",
- atomic_read(&dev->bytes_rendered));
+ atomic_read(&dlfb->bytes_rendered));
}
static ssize_t metrics_bytes_identical_show(struct device *fbdev,
struct device_attribute *a, char *buf) {
struct fb_info *fb_info = dev_get_drvdata(fbdev);
- struct dlfb_data *dev = fb_info->par;
+ struct dlfb_data *dlfb = fb_info->par;
return snprintf(buf, PAGE_SIZE, "%u\n",
- atomic_read(&dev->bytes_identical));
+ atomic_read(&dlfb->bytes_identical));
}
static ssize_t metrics_bytes_sent_show(struct device *fbdev,
struct device_attribute *a, char *buf) {
struct fb_info *fb_info = dev_get_drvdata(fbdev);
- struct dlfb_data *dev = fb_info->par;
+ struct dlfb_data *dlfb = fb_info->par;
return snprintf(buf, PAGE_SIZE, "%u\n",
- atomic_read(&dev->bytes_sent));
+ atomic_read(&dlfb->bytes_sent));
}
static ssize_t metrics_cpu_kcycles_used_show(struct device *fbdev,
struct device_attribute *a, char *buf) {
struct fb_info *fb_info = dev_get_drvdata(fbdev);
- struct dlfb_data *dev = fb_info->par;
+ struct dlfb_data *dlfb = fb_info->par;
return snprintf(buf, PAGE_SIZE, "%u\n",
- atomic_read(&dev->cpu_kcycles_used));
+ atomic_read(&dlfb->cpu_kcycles_used));
}
static ssize_t edid_show(
char *buf, loff_t off, size_t count) {
struct device *fbdev = container_of(kobj, struct device, kobj);
struct fb_info *fb_info = dev_get_drvdata(fbdev);
- struct dlfb_data *dev = fb_info->par;
+ struct dlfb_data *dlfb = fb_info->par;
- if (dev->edid == NULL)
+ if (dlfb->edid == NULL)
return 0;
- if ((off >= dev->edid_size) || (count > dev->edid_size))
+ if ((off >= dlfb->edid_size) || (count > dlfb->edid_size))
return 0;
- if (off + count > dev->edid_size)
- count = dev->edid_size - off;
+ if (off + count > dlfb->edid_size)
+ count = dlfb->edid_size - off;
- memcpy(buf, dev->edid, count);
+ memcpy(buf, dlfb->edid, count);
return count;
}
char *src, loff_t src_off, size_t src_size) {
struct device *fbdev = container_of(kobj, struct device, kobj);
struct fb_info *fb_info = dev_get_drvdata(fbdev);
- struct dlfb_data *dev = fb_info->par;
+ struct dlfb_data *dlfb = fb_info->par;
int ret;
/* We only support write of entire EDID at once, no offset*/
if ((src_size != EDID_LENGTH) || (src_off != 0))
return -EINVAL;
- ret = dlfb_setup_modes(dev, fb_info, src, src_size);
+ ret = dlfb_setup_modes(dlfb, fb_info, src, src_size);
if (ret)
return ret;
- if (!dev->edid || memcmp(src, dev->edid, src_size))
+ if (!dlfb->edid || memcmp(src, dlfb->edid, src_size))
return -EINVAL;
dlfb_ops_set_par(fb_info);
const char *buf, size_t count)
{
struct fb_info *fb_info = dev_get_drvdata(fbdev);
- struct dlfb_data *dev = fb_info->par;
+ struct dlfb_data *dlfb = fb_info->par;
- atomic_set(&dev->bytes_rendered, 0);
- atomic_set(&dev->bytes_identical, 0);
- atomic_set(&dev->bytes_sent, 0);
- atomic_set(&dev->cpu_kcycles_used, 0);
+ atomic_set(&dlfb->bytes_rendered, 0);
+ atomic_set(&dlfb->bytes_identical, 0);
+ atomic_set(&dlfb->bytes_sent, 0);
+ atomic_set(&dlfb->cpu_kcycles_used, 0);
return count;
}
/*
* This is necessary before we can communicate with the display controller.
*/
-static int dlfb_select_std_channel(struct dlfb_data *dev)
+static int dlfb_select_std_channel(struct dlfb_data *dlfb)
{
int ret;
void *buf;
if (!buf)
return -ENOMEM;
- ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
+ ret = usb_control_msg(dlfb->udev, usb_sndctrlpipe(dlfb->udev, 0),
NR_USB_REQUEST_CHANNEL,
(USB_DIR_OUT | USB_TYPE_VENDOR), 0, 0,
buf, sizeof(set_def_chn), USB_CTRL_SET_TIMEOUT);
return ret;
}
-static int dlfb_parse_vendor_descriptor(struct dlfb_data *dev,
+static int dlfb_parse_vendor_descriptor(struct dlfb_data *dlfb,
struct usb_interface *interface)
{
char *desc;
max_area = le32_to_cpu(*((u32 *)desc));
pr_warn("DL chip limited to %d pixel modes\n",
max_area);
- dev->sku_pixel_limit = max_area;
+ dlfb->sku_pixel_limit = max_area;
break;
}
default:
const struct usb_device_id *id)
{
struct usb_device *usbdev;
- struct dlfb_data *dev;
+ struct dlfb_data *dlfb;
int retval = -ENOMEM;
/* usb initialization */
usbdev = interface_to_usbdev(interface);
- dev = kzalloc(sizeof(*dev), GFP_KERNEL);
- if (dev == NULL) {
+ dlfb = kzalloc(sizeof(*dlfb), GFP_KERNEL);
+ if (dlfb == NULL) {
dev_err(&interface->dev, "dlfb_usb_probe: failed alloc of dev struct\n");
goto error;
}
- kref_init(&dev->kref); /* matching kref_put in usb .disconnect fn */
+ kref_init(&dlfb->kref); /* matching kref_put in usb .disconnect fn */
- dev->udev = usbdev;
- usb_set_intfdata(interface, dev);
+ dlfb->udev = usbdev;
+ usb_set_intfdata(interface, dlfb);
pr_info("%s %s - serial #%s\n",
usbdev->manufacturer, usbdev->product, usbdev->serial);
pr_info("vid_%04x&pid_%04x&rev_%04x driver's dlfb_data struct at %p\n",
le16_to_cpu(usbdev->descriptor.idVendor),
le16_to_cpu(usbdev->descriptor.idProduct),
- le16_to_cpu(usbdev->descriptor.bcdDevice), dev);
+ le16_to_cpu(usbdev->descriptor.bcdDevice), dlfb);
pr_info("console enable=%d\n", console);
pr_info("fb_defio enable=%d\n", fb_defio);
pr_info("shadow enable=%d\n", shadow);
- dev->sku_pixel_limit = 2048 * 1152; /* default to maximum */
+ dlfb->sku_pixel_limit = 2048 * 1152; /* default to maximum */
- if (!dlfb_parse_vendor_descriptor(dev, interface)) {
+ if (!dlfb_parse_vendor_descriptor(dlfb, interface)) {
pr_err("firmware not recognized. Assume incompatible device\n");
goto error;
}
if (pixel_limit) {
pr_warn("DL chip limit of %d overridden"
" by module param to %d\n",
- dev->sku_pixel_limit, pixel_limit);
- dev->sku_pixel_limit = pixel_limit;
+ dlfb->sku_pixel_limit, pixel_limit);
+ dlfb->sku_pixel_limit = pixel_limit;
}
- if (!dlfb_alloc_urb_list(dev, WRITES_IN_FLIGHT, MAX_TRANSFER)) {
+ if (!dlfb_alloc_urb_list(dlfb, WRITES_IN_FLIGHT, MAX_TRANSFER)) {
retval = -ENOMEM;
pr_err("dlfb_alloc_urb_list failed\n");
goto error;
}
- kref_get(&dev->kref); /* matching kref_put in free_framebuffer_work */
+ kref_get(&dlfb->kref); /* matching kref_put in free_framebuffer_work */
- /* We don't register a new USB class. Our client interface is fbdev */
+ /* We don't register a new USB class. Our client interface is dlfbev */
/* Workitem keep things fast & simple during USB enumeration */
- INIT_DELAYED_WORK(&dev->init_framebuffer_work,
+ INIT_DELAYED_WORK(&dlfb->init_framebuffer_work,
dlfb_init_framebuffer_work);
- schedule_delayed_work(&dev->init_framebuffer_work, 0);
+ schedule_delayed_work(&dlfb->init_framebuffer_work, 0);
return 0;
error:
- if (dev) {
+ if (dlfb) {
- kref_put(&dev->kref, dlfb_free); /* last ref from kref_init */
+ kref_put(&dlfb->kref, dlfb_free); /* last ref from kref_init */
/* dev has been deallocated. Do not dereference */
}
static void dlfb_init_framebuffer_work(struct work_struct *work)
{
- struct dlfb_data *dev = container_of(work, struct dlfb_data,
+ struct dlfb_data *dlfb = container_of(work, struct dlfb_data,
init_framebuffer_work.work);
struct fb_info *info;
int retval;
int i;
/* allocates framebuffer driver structure, not framebuffer memory */
- info = framebuffer_alloc(0, &dev->udev->dev);
+ info = framebuffer_alloc(0, &dlfb->udev->dev);
if (!info) {
pr_err("framebuffer_alloc failed\n");
goto error;
}
- dev->info = info;
- info->par = dev;
- info->pseudo_palette = dev->pseudo_palette;
+ dlfb->info = info;
+ info->par = dlfb;
+ info->pseudo_palette = dlfb->pseudo_palette;
info->fbops = &dlfb_ops;
retval = fb_alloc_cmap(&info->cmap, 256, 0);
goto error;
}
- INIT_DELAYED_WORK(&dev->free_framebuffer_work,
+ INIT_DELAYED_WORK(&dlfb->free_framebuffer_work,
dlfb_free_framebuffer_work);
INIT_LIST_HEAD(&info->modelist);
- retval = dlfb_setup_modes(dev, info, NULL, 0);
+ retval = dlfb_setup_modes(dlfb, info, NULL, 0);
if (retval != 0) {
pr_err("unable to find common mode for display and adapter\n");
goto error;
/* ready to begin using device */
- atomic_set(&dev->usb_active, 1);
- dlfb_select_std_channel(dev);
+ atomic_set(&dlfb->usb_active, 1);
+ dlfb_select_std_channel(dlfb);
dlfb_ops_check_var(&info->var, info);
dlfb_ops_set_par(info);
pr_info("DisplayLink USB device /dev/fb%d attached. %dx%d resolution."
" Using %dK framebuffer memory\n", info->node,
info->var.xres, info->var.yres,
- ((dev->backing_buffer) ?
+ ((dlfb->backing_buffer) ?
info->fix.smem_len * 2 : info->fix.smem_len) >> 10);
return;
error:
- dlfb_free_framebuffer(dev);
+ dlfb_free_framebuffer(dlfb);
}
static void dlfb_usb_disconnect(struct usb_interface *interface)
{
- struct dlfb_data *dev;
+ struct dlfb_data *dlfb;
struct fb_info *info;
int i;
- dev = usb_get_intfdata(interface);
- info = dev->info;
+ dlfb = usb_get_intfdata(interface);
+ info = dlfb->info;
pr_info("USB disconnect starting\n");
/* we virtualize until all fb clients release. Then we free */
- dev->virtualized = true;
+ dlfb->virtualized = true;
/* When non-active we'll update virtual framebuffer, but no new urbs */
- atomic_set(&dev->usb_active, 0);
+ atomic_set(&dlfb->usb_active, 0);
/* this function will wait for all in-flight urbs to complete */
- dlfb_free_urb_list(dev);
+ dlfb_free_urb_list(dlfb);
if (info) {
/* remove udlfb's sysfs interfaces */
}
usb_set_intfdata(interface, NULL);
- dev->udev = NULL;
+ dlfb->udev = NULL;
/* if clients still have us open, will be freed on last close */
- if (dev->fb_count == 0)
- schedule_delayed_work(&dev->free_framebuffer_work, 0);
+ if (dlfb->fb_count == 0)
+ schedule_delayed_work(&dlfb->free_framebuffer_work, 0);
/* release reference taken by kref_init in probe() */
- kref_put(&dev->kref, dlfb_free);
+ kref_put(&dlfb->kref, dlfb_free);
/* consider dlfb_data freed */
}
static void dlfb_urb_completion(struct urb *urb)
{
struct urb_node *unode = urb->context;
- struct dlfb_data *dev = unode->dev;
+ struct dlfb_data *dlfb = unode->dlfb;
unsigned long flags;
/* sync/async unlink faults aren't errors */
urb->status == -ESHUTDOWN)) {
pr_err("%s - nonzero write bulk status received: %d\n",
__func__, urb->status);
- atomic_set(&dev->lost_pixels, 1);
+ atomic_set(&dlfb->lost_pixels, 1);
}
}
- urb->transfer_buffer_length = dev->urbs.size; /* reset to actual */
+ urb->transfer_buffer_length = dlfb->urbs.size; /* reset to actual */
- spin_lock_irqsave(&dev->urbs.lock, flags);
- list_add_tail(&unode->entry, &dev->urbs.list);
- dev->urbs.available++;
- spin_unlock_irqrestore(&dev->urbs.lock, flags);
+ spin_lock_irqsave(&dlfb->urbs.lock, flags);
+ list_add_tail(&unode->entry, &dlfb->urbs.list);
+ dlfb->urbs.available++;
+ spin_unlock_irqrestore(&dlfb->urbs.lock, flags);
/*
* When using fb_defio, we deadlock if up() is called
if (fb_defio)
schedule_delayed_work(&unode->release_urb_work, 0);
else
- up(&dev->urbs.limit_sem);
+ up(&dlfb->urbs.limit_sem);
}
-static void dlfb_free_urb_list(struct dlfb_data *dev)
+static void dlfb_free_urb_list(struct dlfb_data *dlfb)
{
- int count = dev->urbs.count;
+ int count = dlfb->urbs.count;
struct list_head *node;
struct urb_node *unode;
struct urb *urb;
while (count--) {
/* Getting interrupted means a leak, but ok at disconnect */
- ret = down_interruptible(&dev->urbs.limit_sem);
+ ret = down_interruptible(&dlfb->urbs.limit_sem);
if (ret)
break;
- spin_lock_irqsave(&dev->urbs.lock, flags);
+ spin_lock_irqsave(&dlfb->urbs.lock, flags);
- node = dev->urbs.list.next; /* have reserved one with sem */
+ node = dlfb->urbs.list.next; /* have reserved one with sem */
list_del_init(node);
- spin_unlock_irqrestore(&dev->urbs.lock, flags);
+ spin_unlock_irqrestore(&dlfb->urbs.lock, flags);
unode = list_entry(node, struct urb_node, entry);
urb = unode->urb;
/* Free each separately allocated piece */
- usb_free_coherent(urb->dev, dev->urbs.size,
+ usb_free_coherent(urb->dev, dlfb->urbs.size,
urb->transfer_buffer, urb->transfer_dma);
usb_free_urb(urb);
kfree(node);
}
- dev->urbs.count = 0;
+ dlfb->urbs.count = 0;
}
-static int dlfb_alloc_urb_list(struct dlfb_data *dev, int count, size_t size)
+static int dlfb_alloc_urb_list(struct dlfb_data *dlfb, int count, size_t size)
{
int i = 0;
struct urb *urb;
struct urb_node *unode;
char *buf;
- spin_lock_init(&dev->urbs.lock);
+ spin_lock_init(&dlfb->urbs.lock);
- dev->urbs.size = size;
- INIT_LIST_HEAD(&dev->urbs.list);
+ dlfb->urbs.size = size;
+ INIT_LIST_HEAD(&dlfb->urbs.list);
while (i < count) {
unode = kzalloc(sizeof(*unode), GFP_KERNEL);
if (!unode)
break;
- unode->dev = dev;
+ unode->dlfb = dlfb;
INIT_DELAYED_WORK(&unode->release_urb_work,
dlfb_release_urb_work);
}
unode->urb = urb;
- buf = usb_alloc_coherent(dev->udev, MAX_TRANSFER, GFP_KERNEL,
+ buf = usb_alloc_coherent(dlfb->udev, MAX_TRANSFER, GFP_KERNEL,
&urb->transfer_dma);
if (!buf) {
kfree(unode);
}
/* urb->transfer_buffer_length set to actual before submit */
- usb_fill_bulk_urb(urb, dev->udev, usb_sndbulkpipe(dev->udev, 1),
+ usb_fill_bulk_urb(urb, dlfb->udev, usb_sndbulkpipe(dlfb->udev, 1),
buf, size, dlfb_urb_completion, unode);
urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
- list_add_tail(&unode->entry, &dev->urbs.list);
+ list_add_tail(&unode->entry, &dlfb->urbs.list);
i++;
}
- sema_init(&dev->urbs.limit_sem, i);
- dev->urbs.count = i;
- dev->urbs.available = i;
+ sema_init(&dlfb->urbs.limit_sem, i);
+ dlfb->urbs.count = i;
+ dlfb->urbs.available = i;
return i;
}
-static struct urb *dlfb_get_urb(struct dlfb_data *dev)
+static struct urb *dlfb_get_urb(struct dlfb_data *dlfb)
{
int ret;
struct list_head *entry;
unsigned long flags;
/* Wait for an in-flight buffer to complete and get re-queued */
- ret = down_timeout(&dev->urbs.limit_sem, GET_URB_TIMEOUT);
+ ret = down_timeout(&dlfb->urbs.limit_sem, GET_URB_TIMEOUT);
if (ret) {
- atomic_set(&dev->lost_pixels, 1);
+ atomic_set(&dlfb->lost_pixels, 1);
pr_warn("wait for urb interrupted: %x available: %d\n",
- ret, dev->urbs.available);
+ ret, dlfb->urbs.available);
return NULL;
}
- spin_lock_irqsave(&dev->urbs.lock, flags);
+ spin_lock_irqsave(&dlfb->urbs.lock, flags);
- BUG_ON(list_empty(&dev->urbs.list)); /* reserved one with limit_sem */
- entry = dev->urbs.list.next;
+ BUG_ON(list_empty(&dlfb->urbs.list)); /* reserved one with limit_sem */
+ entry = dlfb->urbs.list.next;
list_del_init(entry);
- dev->urbs.available--;
+ dlfb->urbs.available--;
- spin_unlock_irqrestore(&dev->urbs.lock, flags);
+ spin_unlock_irqrestore(&dlfb->urbs.lock, flags);
unode = list_entry(entry, struct urb_node, entry);
return unode->urb;
}
-static int dlfb_submit_urb(struct dlfb_data *dev, struct urb *urb, size_t len)
+static int dlfb_submit_urb(struct dlfb_data *dlfb, struct urb *urb, size_t len)
{
int ret;
- BUG_ON(len > dev->urbs.size);
+ BUG_ON(len > dlfb->urbs.size);
urb->transfer_buffer_length = len; /* set to actual payload len */
ret = usb_submit_urb(urb, GFP_KERNEL);
if (ret) {
dlfb_urb_completion(urb); /* because no one else will */
- atomic_set(&dev->lost_pixels, 1);
+ atomic_set(&dlfb->lost_pixels, 1);
pr_err("usb_submit_urb error %x\n", ret);
}
return ret;
projects / openwrt / staging / blogic.git / commitdiff