diff options
author | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2014-02-13 14:31:38 +0100 |
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committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2014-04-17 07:10:19 +0200 |
commit | f7018c21350204c4cf628462f229d44d03545254 (patch) | |
tree | 408787177164cf51cc06f7aabdb04fcff8d2b6aa /drivers/video/hecubafb.c | |
parent | video: bf54x-lq043fb: fix build error (diff) | |
download | linux-f7018c21350204c4cf628462f229d44d03545254.tar.xz linux-f7018c21350204c4cf628462f229d44d03545254.zip |
video: move fbdev to drivers/video/fbdev
The drivers/video directory is a mess. It contains generic video related
files, directories for backlight, console, linux logo, lots of fbdev
device drivers, fbdev framework files.
Make some order into the chaos by creating drivers/video/fbdev
directory, and move all fbdev related files there.
No functionality is changed, although I guess it is possible that some
subtle Makefile build order related issue could be created by this
patch.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Rob Clark <robdclark@gmail.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/video/hecubafb.c')
-rw-r--r-- | drivers/video/hecubafb.c | 311 |
1 files changed, 0 insertions, 311 deletions
diff --git a/drivers/video/hecubafb.c b/drivers/video/hecubafb.c deleted file mode 100644 index f64120ec9192..000000000000 --- a/drivers/video/hecubafb.c +++ /dev/null @@ -1,311 +0,0 @@ -/* - * linux/drivers/video/hecubafb.c -- FB driver for Hecuba/Apollo controller - * - * Copyright (C) 2006, Jaya Kumar - * This work was sponsored by CIS(M) Sdn Bhd - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file COPYING in the main directory of this archive for - * more details. - * - * Layout is based on skeletonfb.c by James Simmons and Geert Uytterhoeven. - * This work was possible because of apollo display code from E-Ink's website - * http://support.eink.com/community - * All information used to write this code is from public material made - * available by E-Ink on its support site. Some commands such as 0xA4 - * were found by looping through cmd=0x00 thru 0xFF and supplying random - * values. There are other commands that the display is capable of, - * beyond the 5 used here but they are more complex. - * - * This driver is written to be used with the Hecuba display architecture. - * The actual display chip is called Apollo and the interface electronics - * it needs is called Hecuba. - * - * It is intended to be architecture independent. A board specific driver - * must be used to perform all the physical IO interactions. An example - * is provided as n411.c - * - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/errno.h> -#include <linux/string.h> -#include <linux/mm.h> -#include <linux/vmalloc.h> -#include <linux/delay.h> -#include <linux/interrupt.h> -#include <linux/fb.h> -#include <linux/init.h> -#include <linux/platform_device.h> -#include <linux/list.h> -#include <linux/uaccess.h> - -#include <video/hecubafb.h> - -/* Display specific information */ -#define DPY_W 600 -#define DPY_H 800 - -static struct fb_fix_screeninfo hecubafb_fix = { - .id = "hecubafb", - .type = FB_TYPE_PACKED_PIXELS, - .visual = FB_VISUAL_MONO01, - .xpanstep = 0, - .ypanstep = 0, - .ywrapstep = 0, - .line_length = DPY_W, - .accel = FB_ACCEL_NONE, -}; - -static struct fb_var_screeninfo hecubafb_var = { - .xres = DPY_W, - .yres = DPY_H, - .xres_virtual = DPY_W, - .yres_virtual = DPY_H, - .bits_per_pixel = 1, - .nonstd = 1, -}; - -/* main hecubafb functions */ - -static void apollo_send_data(struct hecubafb_par *par, unsigned char data) -{ - /* set data */ - par->board->set_data(par, data); - - /* set DS low */ - par->board->set_ctl(par, HCB_DS_BIT, 0); - - /* wait for ack */ - par->board->wait_for_ack(par, 0); - - /* set DS hi */ - par->board->set_ctl(par, HCB_DS_BIT, 1); - - /* wait for ack to clear */ - par->board->wait_for_ack(par, 1); -} - -static void apollo_send_command(struct hecubafb_par *par, unsigned char data) -{ - /* command so set CD to high */ - par->board->set_ctl(par, HCB_CD_BIT, 1); - - /* actually strobe with command */ - apollo_send_data(par, data); - - /* clear CD back to low */ - par->board->set_ctl(par, HCB_CD_BIT, 0); -} - -static void hecubafb_dpy_update(struct hecubafb_par *par) -{ - int i; - unsigned char *buf = (unsigned char __force *)par->info->screen_base; - - apollo_send_command(par, APOLLO_START_NEW_IMG); - - for (i=0; i < (DPY_W*DPY_H/8); i++) { - apollo_send_data(par, *(buf++)); - } - - apollo_send_command(par, APOLLO_STOP_IMG_DATA); - apollo_send_command(par, APOLLO_DISPLAY_IMG); -} - -/* this is called back from the deferred io workqueue */ -static void hecubafb_dpy_deferred_io(struct fb_info *info, - struct list_head *pagelist) -{ - hecubafb_dpy_update(info->par); -} - -static void hecubafb_fillrect(struct fb_info *info, - const struct fb_fillrect *rect) -{ - struct hecubafb_par *par = info->par; - - sys_fillrect(info, rect); - - hecubafb_dpy_update(par); -} - -static void hecubafb_copyarea(struct fb_info *info, - const struct fb_copyarea *area) -{ - struct hecubafb_par *par = info->par; - - sys_copyarea(info, area); - - hecubafb_dpy_update(par); -} - -static void hecubafb_imageblit(struct fb_info *info, - const struct fb_image *image) -{ - struct hecubafb_par *par = info->par; - - sys_imageblit(info, image); - - hecubafb_dpy_update(par); -} - -/* - * this is the slow path from userspace. they can seek and write to - * the fb. it's inefficient to do anything less than a full screen draw - */ -static ssize_t hecubafb_write(struct fb_info *info, const char __user *buf, - size_t count, loff_t *ppos) -{ - struct hecubafb_par *par = info->par; - unsigned long p = *ppos; - void *dst; - int err = 0; - unsigned long total_size; - - if (info->state != FBINFO_STATE_RUNNING) - return -EPERM; - - total_size = info->fix.smem_len; - - if (p > total_size) - return -EFBIG; - - if (count > total_size) { - err = -EFBIG; - count = total_size; - } - - if (count + p > total_size) { - if (!err) - err = -ENOSPC; - - count = total_size - p; - } - - dst = (void __force *) (info->screen_base + p); - - if (copy_from_user(dst, buf, count)) - err = -EFAULT; - - if (!err) - *ppos += count; - - hecubafb_dpy_update(par); - - return (err) ? err : count; -} - -static struct fb_ops hecubafb_ops = { - .owner = THIS_MODULE, - .fb_read = fb_sys_read, - .fb_write = hecubafb_write, - .fb_fillrect = hecubafb_fillrect, - .fb_copyarea = hecubafb_copyarea, - .fb_imageblit = hecubafb_imageblit, -}; - -static struct fb_deferred_io hecubafb_defio = { - .delay = HZ, - .deferred_io = hecubafb_dpy_deferred_io, -}; - -static int hecubafb_probe(struct platform_device *dev) -{ - struct fb_info *info; - struct hecuba_board *board; - int retval = -ENOMEM; - int videomemorysize; - unsigned char *videomemory; - struct hecubafb_par *par; - - /* pick up board specific routines */ - board = dev->dev.platform_data; - if (!board) - return -EINVAL; - - /* try to count device specific driver, if can't, platform recalls */ - if (!try_module_get(board->owner)) - return -ENODEV; - - videomemorysize = (DPY_W*DPY_H)/8; - - videomemory = vzalloc(videomemorysize); - if (!videomemory) - goto err_videomem_alloc; - - info = framebuffer_alloc(sizeof(struct hecubafb_par), &dev->dev); - if (!info) - goto err_fballoc; - - info->screen_base = (char __force __iomem *)videomemory; - info->fbops = &hecubafb_ops; - - info->var = hecubafb_var; - info->fix = hecubafb_fix; - info->fix.smem_len = videomemorysize; - par = info->par; - par->info = info; - par->board = board; - par->send_command = apollo_send_command; - par->send_data = apollo_send_data; - - info->flags = FBINFO_FLAG_DEFAULT | FBINFO_VIRTFB; - - info->fbdefio = &hecubafb_defio; - fb_deferred_io_init(info); - - retval = register_framebuffer(info); - if (retval < 0) - goto err_fbreg; - platform_set_drvdata(dev, info); - - fb_info(info, "Hecuba frame buffer device, using %dK of video memory\n", - videomemorysize >> 10); - - /* this inits the dpy */ - retval = par->board->init(par); - if (retval < 0) - goto err_fbreg; - - return 0; -err_fbreg: - framebuffer_release(info); -err_fballoc: - vfree(videomemory); -err_videomem_alloc: - module_put(board->owner); - return retval; -} - -static int hecubafb_remove(struct platform_device *dev) -{ - struct fb_info *info = platform_get_drvdata(dev); - - if (info) { - struct hecubafb_par *par = info->par; - fb_deferred_io_cleanup(info); - unregister_framebuffer(info); - vfree((void __force *)info->screen_base); - if (par->board->remove) - par->board->remove(par); - module_put(par->board->owner); - framebuffer_release(info); - } - return 0; -} - -static struct platform_driver hecubafb_driver = { - .probe = hecubafb_probe, - .remove = hecubafb_remove, - .driver = { - .owner = THIS_MODULE, - .name = "hecubafb", - }, -}; -module_platform_driver(hecubafb_driver); - -MODULE_DESCRIPTION("fbdev driver for Hecuba/Apollo controller"); -MODULE_AUTHOR("Jaya Kumar"); -MODULE_LICENSE("GPL"); |