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path: root/drivers/staging/udlfb/udlfb.c
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Diffstat (limited to 'drivers/staging/udlfb/udlfb.c')
-rw-r--r--drivers/staging/udlfb/udlfb.c96
1 files changed, 38 insertions, 58 deletions
diff --git a/drivers/staging/udlfb/udlfb.c b/drivers/staging/udlfb/udlfb.c
index 8341b0e904bd..45b8ae7882de 100644
--- a/drivers/staging/udlfb/udlfb.c
+++ b/drivers/staging/udlfb/udlfb.c
@@ -24,7 +24,7 @@
#define DRIVER_VERSION "DLFB 0.2"
-// memory functions taken from vfb
+/* memory functions taken from vfb */
static void *rvmalloc(unsigned long size)
{
@@ -72,17 +72,16 @@ static int dlfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
printk("MMAP: %lu %u\n", offset + size, info->fix.smem_len);
- if (offset + size > info->fix.smem_len) {
+ if (offset + size > info->fix.smem_len)
return -EINVAL;
- }
pos = (unsigned long)info->fix.smem_start + offset;
while (size > 0) {
page = vmalloc_to_pfn((void *)pos);
- if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) {
+ if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED))
return -EAGAIN;
- }
+
start += PAGE_SIZE;
pos += PAGE_SIZE;
if (size > PAGE_SIZE)
@@ -96,28 +95,23 @@ static int dlfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
}
-//
-
-//ioctl structure
+/* ioctl structure */
struct dloarea {
int x, y;
int w, h;
};
/*
-
static struct usb_device_id id_table [] = {
{ USB_DEVICE(0x17e9, 0x023d) },
- { }
+ { }
};
-
*/
static struct usb_device_id id_table[] = {
- {.idVendor = 0x17e9,.match_flags = USB_DEVICE_ID_MATCH_VENDOR,},
+ {.idVendor = 0x17e9, .match_flags = USB_DEVICE_ID_MATCH_VENDOR,},
{},
};
-
MODULE_DEVICE_TABLE(usb, id_table);
static struct usb_driver dlfb_driver;
@@ -135,13 +129,11 @@ image_blit(struct dlfb_data *dev_info, int x, int y, int width, int height,
char *bufptr;
- if (x + width > dev_info->info->var.xres) {
+ if (x + width > dev_info->info->var.xres)
return -EINVAL;
- }
- if (y + height > dev_info->info->var.yres) {
+ if (y + height > dev_info->info->var.yres)
return -EINVAL;
- }
mutex_lock(&dev_info->bulk_mutex);
@@ -149,7 +141,7 @@ image_blit(struct dlfb_data *dev_info, int x, int y, int width, int height,
data += (dev_info->info->var.xres * 2 * y) + (x * 2);
- //printk("IMAGE_BLIT\n");
+ /* printk("IMAGE_BLIT\n"); */
bufptr = dev_info->buf;
@@ -162,7 +154,7 @@ image_blit(struct dlfb_data *dev_info, int x, int y, int width, int height,
rem = width;
- //printk("WRITING LINE %d\n", i);
+ /* printk("WRITING LINE %d\n", i); */
while (rem) {
@@ -193,7 +185,7 @@ image_blit(struct dlfb_data *dev_info, int x, int y, int width, int height,
*bufptr++ = (char)(base >> 8);
*bufptr++ = (char)(base);
*bufptr++ = 255;
- // PUT COMPRESSION HERE
+ /* PUT COMPRESSION HERE */
for (j = 0; j < 510; j += 2) {
bufptr[j] = data[j + 1];
bufptr[j + 1] = data[j];
@@ -226,7 +218,7 @@ image_blit(struct dlfb_data *dev_info, int x, int y, int width, int height,
*bufptr++ = (char)(base >> 8);
*bufptr++ = (char)(base);
*bufptr++ = rem;
- // PUT COMPRESSION HERE
+ /* PUT COMPRESSION HERE */
for (j = 0; j < rem * 2; j += 2) {
bufptr[j] = data[j + 1];
bufptr[j + 1] = data[j];
@@ -250,9 +242,8 @@ image_blit(struct dlfb_data *dev_info, int x, int y, int width, int height,
}
- if (bufptr > dev_info->buf) {
+ if (bufptr > dev_info->buf)
ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf);
- }
mutex_unlock(&dev_info->bulk_mutex);
@@ -274,13 +265,11 @@ draw_rect(struct dlfb_data *dev_info, int x, int y, int width, int height,
char *bufptr;
- if (x + width > dev_info->info->var.xres) {
+ if (x + width > dev_info->info->var.xres)
return -EINVAL;
- }
- if (y + height > dev_info->info->var.yres) {
+ if (y + height > dev_info->info->var.yres)
return -EINVAL;
- }
mutex_lock(&dev_info->bulk_mutex);
@@ -338,9 +327,8 @@ draw_rect(struct dlfb_data *dev_info, int x, int y, int width, int height,
}
- if (bufptr > dev_info->buf) {
+ if (bufptr > dev_info->buf)
ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf);
- }
mutex_unlock(&dev_info->bulk_mutex);
@@ -351,7 +339,6 @@ static int
copyarea(struct dlfb_data *dev_info, int dx, int dy, int sx, int sy,
int width, int height)
{
-
int base;
int source;
int rem;
@@ -359,13 +346,11 @@ copyarea(struct dlfb_data *dev_info, int dx, int dy, int sx, int sy,
char *bufptr;
- if (dx + width > dev_info->info->var.xres) {
+ if (dx + width > dev_info->info->var.xres)
return -EINVAL;
- }
- if (dy + height > dev_info->info->var.yres) {
+ if (dy + height > dev_info->info->var.yres)
return -EINVAL;
- }
mutex_lock(&dev_info->bulk_mutex);
@@ -423,17 +408,14 @@ copyarea(struct dlfb_data *dev_info, int dx, int dy, int sx, int sy,
source += rem * 2;
rem = 0;
}
-
}
base += (dev_info->info->var.xres * 2) - (width * 2);
source += (dev_info->info->var.xres * 2) - (width * 2);
-
}
- if (bufptr > dev_info->buf) {
+ if (bufptr > dev_info->buf)
ret = dlfb_bulk_msg(dev_info, bufptr - dev_info->buf);
- }
mutex_unlock(&dev_info->bulk_mutex);
@@ -448,7 +430,7 @@ void dlfb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
copyarea(dev, area->dx, area->dy, area->sx, area->sy, area->width,
area->height);
- //printk("COPY AREA %d %d %d %d %d %d !!!\n", area->dx, area->dy, area->sx, area->sy, area->width, area->height);
+ /* printk("COPY AREA %d %d %d %d %d %d !!!\n", area->dx, area->dy, area->sx, area->sy, area->width, area->height); */
}
@@ -457,12 +439,12 @@ void dlfb_imageblit(struct fb_info *info, const struct fb_image *image)
int ret;
struct dlfb_data *dev = info->par;
- //printk("IMAGE BLIT (1) %d %d %d %d DEPTH %d {%p}!!!\n", image->dx, image->dy, image->width, image->height, image->depth, dev->udev);
+ /* printk("IMAGE BLIT (1) %d %d %d %d DEPTH %d {%p}!!!\n", image->dx, image->dy, image->width, image->height, image->depth, dev->udev); */
cfb_imageblit(info, image);
ret =
image_blit(dev, image->dx, image->dy, image->width, image->height,
info->screen_base);
- //printk("IMAGE BLIT (2) %d %d %d %d DEPTH %d {%p} %d!!!\n", image->dx, image->dy, image->width, image->height, image->depth, dev->udev, ret);
+ /* printk("IMAGE BLIT (2) %d %d %d %d DEPTH %d {%p} %d!!!\n", image->dx, image->dy, image->width, image->height, image->depth, dev->udev, ret); */
}
void dlfb_fillrect(struct fb_info *info, const struct fb_fillrect *region)
@@ -476,7 +458,7 @@ void dlfb_fillrect(struct fb_info *info, const struct fb_fillrect *region)
memcpy(&blue, &region->color + 2, 1);
draw_rect(dev, region->dx, region->dy, region->width, region->height,
red, green, blue);
- //printk("FILL RECT %d %d !!!\n", region->dx, region->dy);
+ /* printk("FILL RECT %d %d !!!\n", region->dx, region->dy); */
}
@@ -508,7 +490,7 @@ static int dlfb_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
return 0;
}
-// taken from vesafb
+/* taken from vesafb */
static int
dlfb_setcolreg(unsigned regno, unsigned red, unsigned green,
@@ -544,12 +526,12 @@ static int dlfb_release(struct fb_info *info, int user)
return 0;
}
-static int dlfb_blank(int blank_mode, struct fb_info *info) {
+static int dlfb_blank(int blank_mode, struct fb_info *info)
+{
return 0;
}
static struct fb_ops dlfb_ops = {
-
.fb_setcolreg = dlfb_setcolreg,
.fb_fillrect = dlfb_fillrect,
.fb_copyarea = dlfb_copyarea,
@@ -583,10 +565,11 @@ dlfb_probe(struct usb_interface *interface, const struct usb_device_id *id)
printk("DisplayLink device attached\n");
- // add framebuffer info to usb interface
+ /* add framebuffer info to usb interface */
usb_set_intfdata(interface, dev_info);
- dev_info->buf = kmalloc(BUF_SIZE, GFP_KERNEL); //usb_buffer_alloc(dev_info->udev, BUF_SIZE , GFP_KERNEL, &dev_info->tx_urb->transfer_dma);
+ dev_info->buf = kmalloc(BUF_SIZE, GFP_KERNEL);
+ /* usb_buffer_alloc(dev_info->udev, BUF_SIZE , GFP_KERNEL, &dev_info->tx_urb->transfer_dma); */
if (dev_info->buf == NULL) {
printk("unable to allocate memory for dlfb commands\n");
@@ -611,7 +594,7 @@ dlfb_probe(struct usb_interface *interface, const struct usb_device_id *id)
usb_rcvctrlpipe(dev_info->udev, 0), (0x02),
(0x80 | (0x02 << 5)), i << 8, 0xA1, rbuf, 2,
0);
- //printk("ret control msg edid %d: %d [%d]\n",i, ret, rbuf[1]);
+ /* printk("ret control msg edid %d: %d [%d]\n",i, ret, rbuf[1]); */
dev_info->edid[i] = rbuf[1];
}
@@ -626,9 +609,8 @@ dlfb_probe(struct usb_interface *interface, const struct usb_device_id *id)
printk("EDID XRES %d YRES %d\n", info->var.xres, info->var.yres);
- if (dlfb_set_video_mode(dev_info, info->var.xres, info->var.yres) != 0) {
+ if (dlfb_set_video_mode(dev_info, info->var.xres, info->var.yres) != 0)
goto out;
- }
printk("found valid mode...%d\n", info->var.pixclock);
@@ -654,10 +636,10 @@ dlfb_probe(struct usb_interface *interface, const struct usb_device_id *id)
dev_info->backing_buffer = kzalloc(dev_info->screen_size, GFP_KERNEL);
- if (!dev_info->backing_buffer) {
+ if (!dev_info->backing_buffer)
printk("non posso allocare il backing buffer\n");
- }
- //info->var = dev_info->si;
+
+ /* info->var = dev_info->si; */
info->var.bits_per_pixel = 16;
info->var.activate = FB_ACTIVATE_TEST;
@@ -675,7 +657,7 @@ dlfb_probe(struct usb_interface *interface, const struct usb_device_id *id)
info->var.blue.length = 5;
info->var.blue.msb_right = 0;
- //info->var.pixclock = (10000000 / FB_W * 1000 / FB_H)/2 ;
+ /* info->var.pixclock = (10000000 / FB_W * 1000 / FB_H)/2 ; */
info->fix.smem_start = (unsigned long)info->screen_base;
info->fix.smem_len = PAGE_ALIGN(dev_info->screen_size);
@@ -685,14 +667,12 @@ dlfb_probe(struct usb_interface *interface, const struct usb_device_id *id)
info->fix.accel = info->flags;
info->fix.line_length = dev_info->line_length;
- if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
+ if (fb_alloc_cmap(&info->cmap, 256, 0) < 0)
goto out1;
- }
printk("colormap allocated\n");
- if (register_framebuffer(info) < 0) {
+ if (register_framebuffer(info) < 0)
goto out2;
- }
draw_rect(dev_info, 0, 0, dev_info->info->var.xres,
dev_info->info->var.yres, 0x30, 0xff, 0x30);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-25 09:16:02 +0000