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path: root/drivers/video/fbsysfs.c
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Diffstat (limited to 'drivers/video/fbsysfs.c')
-rw-r--r--drivers/video/fbsysfs.c449
1 files changed, 0 insertions, 449 deletions
diff --git a/drivers/video/fbsysfs.c b/drivers/video/fbsysfs.c
deleted file mode 100644
index ed1d4d1ac4f..00000000000
--- a/drivers/video/fbsysfs.c
+++ /dev/null
@@ -1,449 +0,0 @@
-/*
- * fbsysfs.c - framebuffer device class and attributes
- *
- * Copyright (c) 2004 James Simmons <jsimmons@infradead.org>
- *
- * 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.
- */
-
-/*
- * Note: currently there's only stubs for framebuffer_alloc and
- * framebuffer_release here. The reson for that is that until all drivers
- * are converted to use it a sysfsification will open OOPSable races.
- */
-
-#include <linux/kernel.h>
-#include <linux/fb.h>
-#include <linux/console.h>
-
-/**
- * framebuffer_alloc - creates a new frame buffer info structure
- *
- * @size: size of driver private data, can be zero
- * @dev: pointer to the device for this fb, this can be NULL
- *
- * Creates a new frame buffer info structure. Also reserves @size bytes
- * for driver private data (info->par). info->par (if any) will be
- * aligned to sizeof(long).
- *
- * Returns the new structure, or NULL if an error occured.
- *
- */
-struct fb_info *framebuffer_alloc(size_t size, struct device *dev)
-{
-#define BYTES_PER_LONG (BITS_PER_LONG/8)
-#define PADDING (BYTES_PER_LONG - (sizeof(struct fb_info) % BYTES_PER_LONG))
- int fb_info_size = sizeof(struct fb_info);
- struct fb_info *info;
- char *p;
-
- if (size)
- fb_info_size += PADDING;
-
- p = kmalloc(fb_info_size + size, GFP_KERNEL);
- if (!p)
- return NULL;
- memset(p, 0, fb_info_size + size);
- info = (struct fb_info *) p;
-
- if (size)
- info->par = p + fb_info_size;
-
- info->device = dev;
-
- return info;
-#undef PADDING
-#undef BYTES_PER_LONG
-}
-EXPORT_SYMBOL(framebuffer_alloc);
-
-/**
- * framebuffer_release - marks the structure available for freeing
- *
- * @info: frame buffer info structure
- *
- * Drop the reference count of the class_device embedded in the
- * framebuffer info structure.
- *
- */
-void framebuffer_release(struct fb_info *info)
-{
- kfree(info);
-}
-EXPORT_SYMBOL(framebuffer_release);
-
-static int activate(struct fb_info *fb_info, struct fb_var_screeninfo *var)
-{
- int err;
-
- var->activate |= FB_ACTIVATE_FORCE;
- acquire_console_sem();
- fb_info->flags |= FBINFO_MISC_USEREVENT;
- err = fb_set_var(fb_info, var);
- fb_info->flags &= ~FBINFO_MISC_USEREVENT;
- release_console_sem();
- if (err)
- return err;
- return 0;
-}
-
-static int mode_string(char *buf, unsigned int offset,
- const struct fb_videomode *mode)
-{
- char m = 'U';
- if (mode->flag & FB_MODE_IS_DETAILED)
- m = 'D';
- if (mode->flag & FB_MODE_IS_VESA)
- m = 'V';
- if (mode->flag & FB_MODE_IS_STANDARD)
- m = 'S';
- return snprintf(&buf[offset], PAGE_SIZE - offset, "%c:%dx%d-%d\n", m, mode->xres, mode->yres, mode->refresh);
-}
-
-static ssize_t store_mode(struct class_device *class_device, const char * buf,
- size_t count)
-{
- struct fb_info *fb_info =
- (struct fb_info *)class_get_devdata(class_device);
- char mstr[100];
- struct fb_var_screeninfo var;
- struct fb_modelist *modelist;
- struct fb_videomode *mode;
- struct list_head *pos;
- size_t i;
- int err;
-
- memset(&var, 0, sizeof(var));
-
- list_for_each(pos, &fb_info->modelist) {
- modelist = list_entry(pos, struct fb_modelist, list);
- mode = &modelist->mode;
- i = mode_string(mstr, 0, mode);
- if (strncmp(mstr, buf, max(count, i)) == 0) {
-
- var = fb_info->var;
- fb_videomode_to_var(&var, mode);
- if ((err = activate(fb_info, &var)))
- return err;
- fb_info->mode = mode;
- return count;
- }
- }
- return -EINVAL;
-}
-
-static ssize_t show_mode(struct class_device *class_device, char *buf)
-{
- struct fb_info *fb_info =
- (struct fb_info *)class_get_devdata(class_device);
-
- if (!fb_info->mode)
- return 0;
-
- return mode_string(buf, 0, fb_info->mode);
-}
-
-static ssize_t store_modes(struct class_device *class_device, const char * buf,
- size_t count)
-{
- struct fb_info *fb_info =
- (struct fb_info *)class_get_devdata(class_device);
- LIST_HEAD(old_list);
- int i = count / sizeof(struct fb_videomode);
-
- if (i * sizeof(struct fb_videomode) != count)
- return -EINVAL;
-
- acquire_console_sem();
- list_splice(&fb_info->modelist, &old_list);
- fb_videomode_to_modelist((struct fb_videomode *)buf, i,
- &fb_info->modelist);
- if (fb_new_modelist(fb_info)) {
- fb_destroy_modelist(&fb_info->modelist);
- list_splice(&old_list, &fb_info->modelist);
- } else
- fb_destroy_modelist(&old_list);
-
- release_console_sem();
-
- return 0;
-}
-
-static ssize_t show_modes(struct class_device *class_device, char *buf)
-{
- struct fb_info *fb_info =
- (struct fb_info *)class_get_devdata(class_device);
- unsigned int i;
- struct list_head *pos;
- struct fb_modelist *modelist;
- const struct fb_videomode *mode;
-
- i = 0;
- list_for_each(pos, &fb_info->modelist) {
- modelist = list_entry(pos, struct fb_modelist, list);
- mode = &modelist->mode;
- i += mode_string(buf, i, mode);
- }
- return i;
-}
-
-static ssize_t store_bpp(struct class_device *class_device, const char * buf,
- size_t count)
-{
- struct fb_info *fb_info =
- (struct fb_info *)class_get_devdata(class_device);
- struct fb_var_screeninfo var;
- char ** last = NULL;
- int err;
-
- var = fb_info->var;
- var.bits_per_pixel = simple_strtoul(buf, last, 0);
- if ((err = activate(fb_info, &var)))
- return err;
- return count;
-}
-
-static ssize_t show_bpp(struct class_device *class_device, char *buf)
-{
- struct fb_info *fb_info =
- (struct fb_info *)class_get_devdata(class_device);
- return snprintf(buf, PAGE_SIZE, "%d\n", fb_info->var.bits_per_pixel);
-}
-
-static ssize_t store_virtual(struct class_device *class_device,
- const char * buf, size_t count)
-{
- struct fb_info *fb_info =
- (struct fb_info *)class_get_devdata(class_device);
- struct fb_var_screeninfo var;
- char *last = NULL;
- int err;
-
- var = fb_info->var;
- var.xres_virtual = simple_strtoul(buf, &last, 0);
- last++;
- if (last - buf >= count)
- return -EINVAL;
- var.yres_virtual = simple_strtoul(last, &last, 0);
-
- if ((err = activate(fb_info, &var)))
- return err;
- return count;
-}
-
-static ssize_t show_virtual(struct class_device *class_device, char *buf)
-{
- struct fb_info *fb_info =
- (struct fb_info *)class_get_devdata(class_device);
- return snprintf(buf, PAGE_SIZE, "%d,%d\n", fb_info->var.xres_virtual,
- fb_info->var.yres_virtual);
-}
-
-/* Format for cmap is "%02x%c%4x%4x%4x\n" */
-/* %02x entry %c transp %4x red %4x blue %4x green \n */
-/* 256 rows at 16 chars equals 4096, the normal page size */
-/* the code will automatically adjust for different page sizes */
-static ssize_t store_cmap(struct class_device *class_device, const char *buf,
- size_t count)
-{
- struct fb_info *fb_info = (struct fb_info *)class_get_devdata(class_device);
- int rc, i, start, length, transp = 0;
-
- if ((count > PAGE_SIZE) || ((count % 16) != 0))
- return -EINVAL;
-
- if (!fb_info->fbops->fb_setcolreg && !fb_info->fbops->fb_setcmap)
- return -EINVAL;
-
- sscanf(buf, "%02x", &start);
- length = count / 16;
-
- for (i = 0; i < length; i++)
- if (buf[i * 16 + 2] != ' ')
- transp = 1;
-
- /* If we can batch, do it */
- if (fb_info->fbops->fb_setcmap && length > 1) {
- struct fb_cmap umap;
-
- memset(&umap, 0, sizeof(umap));
- if ((rc = fb_alloc_cmap(&umap, length, transp)))
- return rc;
-
- umap.start = start;
- for (i = 0; i < length; i++) {
- sscanf(&buf[i * 16 + 3], "%4hx", &umap.red[i]);
- sscanf(&buf[i * 16 + 7], "%4hx", &umap.blue[i]);
- sscanf(&buf[i * 16 + 11], "%4hx", &umap.green[i]);
- if (transp)
- umap.transp[i] = (buf[i * 16 + 2] != ' ');
- }
- rc = fb_info->fbops->fb_setcmap(&umap, fb_info);
- fb_copy_cmap(&umap, &fb_info->cmap);
- fb_dealloc_cmap(&umap);
-
- return rc;
- }
- for (i = 0; i < length; i++) {
- u16 red, blue, green, tsp;
-
- sscanf(&buf[i * 16 + 3], "%4hx", &red);
- sscanf(&buf[i * 16 + 7], "%4hx", &blue);
- sscanf(&buf[i * 16 + 11], "%4hx", &green);
- tsp = (buf[i * 16 + 2] != ' ');
- if ((rc = fb_info->fbops->fb_setcolreg(start++,
- red, green, blue, tsp, fb_info)))
- return rc;
-
- fb_info->cmap.red[i] = red;
- fb_info->cmap.blue[i] = blue;
- fb_info->cmap.green[i] = green;
- if (transp)
- fb_info->cmap.transp[i] = tsp;
- }
- return 0;
-}
-
-static ssize_t show_cmap(struct class_device *class_device, char *buf)
-{
- struct fb_info *fb_info =
- (struct fb_info *)class_get_devdata(class_device);
- unsigned int i;
-
- if (!fb_info->cmap.red || !fb_info->cmap.blue ||
- !fb_info->cmap.green)
- return -EINVAL;
-
- if (fb_info->cmap.len > PAGE_SIZE / 16)
- return -EINVAL;
-
- /* don't mess with the format, the buffer is PAGE_SIZE */
- /* 256 entries at 16 chars per line equals 4096 = PAGE_SIZE */
- for (i = 0; i < fb_info->cmap.len; i++) {
- snprintf(&buf[ i * 16], PAGE_SIZE - i * 16, "%02x%c%4x%4x%4x\n", i + fb_info->cmap.start,
- ((fb_info->cmap.transp && fb_info->cmap.transp[i]) ? '*' : ' '),
- fb_info->cmap.red[i], fb_info->cmap.blue[i],
- fb_info->cmap.green[i]);
- }
- return 16 * fb_info->cmap.len;
-}
-
-static ssize_t store_blank(struct class_device *class_device, const char * buf,
- size_t count)
-{
- struct fb_info *fb_info =
- (struct fb_info *)class_get_devdata(class_device);
- char *last = NULL;
- int err;
-
- acquire_console_sem();
- fb_info->flags |= FBINFO_MISC_USEREVENT;
- err = fb_blank(fb_info, simple_strtoul(buf, &last, 0));
- fb_info->flags &= ~FBINFO_MISC_USEREVENT;
- release_console_sem();
- if (err < 0)
- return err;
- return count;
-}
-
-static ssize_t show_blank(struct class_device *class_device, char *buf)
-{
-// struct fb_info *fb_info = (struct fb_info *)class_get_devdata(class_device);
- return 0;
-}
-
-static ssize_t store_console(struct class_device *class_device,
- const char * buf, size_t count)
-{
-// struct fb_info *fb_info = (struct fb_info *)class_get_devdata(class_device);
- return 0;
-}
-
-static ssize_t show_console(struct class_device *class_device, char *buf)
-{
-// struct fb_info *fb_info = (struct fb_info *)class_get_devdata(class_device);
- return 0;
-}
-
-static ssize_t store_cursor(struct class_device *class_device,
- const char * buf, size_t count)
-{
-// struct fb_info *fb_info = (struct fb_info *)class_get_devdata(class_device);
- return 0;
-}
-
-static ssize_t show_cursor(struct class_device *class_device, char *buf)
-{
-// struct fb_info *fb_info = (struct fb_info *)class_get_devdata(class_device);
- return 0;
-}
-
-static ssize_t store_pan(struct class_device *class_device, const char * buf,
- size_t count)
-{
- struct fb_info *fb_info =
- (struct fb_info *)class_get_devdata(class_device);
- struct fb_var_screeninfo var;
- char *last = NULL;
- int err;
-
- var = fb_info->var;
- var.xoffset = simple_strtoul(buf, &last, 0);
- last++;
- if (last - buf >= count)
- return -EINVAL;
- var.yoffset = simple_strtoul(last, &last, 0);
-
- acquire_console_sem();
- err = fb_pan_display(fb_info, &var);
- release_console_sem();
-
- if (err < 0)
- return err;
- return count;
-}
-
-static ssize_t show_pan(struct class_device *class_device, char *buf)
-{
- struct fb_info *fb_info =
- (struct fb_info *)class_get_devdata(class_device);
- return snprintf(buf, PAGE_SIZE, "%d,%d\n", fb_info->var.xoffset,
- fb_info->var.xoffset);
-}
-
-static struct class_device_attribute class_device_attrs[] = {
- __ATTR(bits_per_pixel, S_IRUGO|S_IWUSR, show_bpp, store_bpp),
- __ATTR(blank, S_IRUGO|S_IWUSR, show_blank, store_blank),
- __ATTR(color_map, S_IRUGO|S_IWUSR, show_cmap, store_cmap),
- __ATTR(console, S_IRUGO|S_IWUSR, show_console, store_console),
- __ATTR(cursor, S_IRUGO|S_IWUSR, show_cursor, store_cursor),
- __ATTR(mode, S_IRUGO|S_IWUSR, show_mode, store_mode),
- __ATTR(modes, S_IRUGO|S_IWUSR, show_modes, store_modes),
- __ATTR(pan, S_IRUGO|S_IWUSR, show_pan, store_pan),
- __ATTR(virtual_size, S_IRUGO|S_IWUSR, show_virtual, store_virtual),
-};
-
-int fb_init_class_device(struct fb_info *fb_info)
-{
- unsigned int i;
- class_set_devdata(fb_info->class_device, fb_info);
-
- for (i = 0; i < ARRAY_SIZE(class_device_attrs); i++)
- class_device_create_file(fb_info->class_device,
- &class_device_attrs[i]);
- return 0;
-}
-
-void fb_cleanup_class_device(struct fb_info *fb_info)
-{
- unsigned int i;
-
- for (i = 0; i < ARRAY_SIZE(class_device_attrs); i++)
- class_device_remove_file(fb_info->class_device,
- &class_device_attrs[i]);
-}
-
-