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author | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2014-02-13 15:31:38 +0200 |
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committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2014-04-17 08:10:19 +0300 |
commit | f7018c21350204c4cf628462f229d44d03545254 (patch) | |
tree | 408787177164cf51cc06f7aabdb04fcff8d2b6aa /drivers/video/cobalt_lcdfb.c | |
parent | c26ef3eb3c11274bad1b64498d0a134f85755250 (diff) | |
download | linux-f7018c21350204c4cf628462f229d44d03545254.tar.gz linux-f7018c21350204c4cf628462f229d44d03545254.tar.bz2 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/cobalt_lcdfb.c')
-rw-r--r-- | drivers/video/cobalt_lcdfb.c | 401 |
1 files changed, 0 insertions, 401 deletions
diff --git a/drivers/video/cobalt_lcdfb.c b/drivers/video/cobalt_lcdfb.c deleted file mode 100644 index d5533f4db1cf..000000000000 --- a/drivers/video/cobalt_lcdfb.c +++ /dev/null @@ -1,401 +0,0 @@ -/* - * Cobalt/SEAD3 LCD frame buffer driver. - * - * Copyright (C) 2008 Yoichi Yuasa <yuasa@linux-mips.org> - * Copyright (C) 2012 MIPS Technologies, Inc. - * - * 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. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include <linux/delay.h> -#include <linux/fb.h> -#include <linux/init.h> -#include <linux/io.h> -#include <linux/ioport.h> -#include <linux/uaccess.h> -#include <linux/platform_device.h> -#include <linux/module.h> - -/* - * Cursor position address - * \X 0 1 2 ... 14 15 - * Y+----+----+----+---+----+----+ - * 0|0x00|0x01|0x02|...|0x0e|0x0f| - * +----+----+----+---+----+----+ - * 1|0x40|0x41|0x42|...|0x4e|0x4f| - * +----+----+----+---+----+----+ - */ -#define LCD_DATA_REG_OFFSET 0x10 -#define LCD_XRES_MAX 16 -#define LCD_YRES_MAX 2 -#define LCD_CHARS_MAX 32 - -#define LCD_CLEAR 0x01 -#define LCD_CURSOR_MOVE_HOME 0x02 -#define LCD_RESET 0x06 -#define LCD_OFF 0x08 -#define LCD_CURSOR_OFF 0x0c -#define LCD_CURSOR_BLINK_OFF 0x0e -#define LCD_CURSOR_ON 0x0f -#define LCD_ON LCD_CURSOR_ON -#define LCD_CURSOR_MOVE_LEFT 0x10 -#define LCD_CURSOR_MOVE_RIGHT 0x14 -#define LCD_DISPLAY_LEFT 0x18 -#define LCD_DISPLAY_RIGHT 0x1c -#define LCD_PRERESET 0x3f /* execute 4 times continuously */ -#define LCD_BUSY 0x80 - -#define LCD_GRAPHIC_MODE 0x40 -#define LCD_TEXT_MODE 0x80 -#define LCD_CUR_POS_MASK 0x7f - -#define LCD_CUR_POS(x) ((x) & LCD_CUR_POS_MASK) -#define LCD_TEXT_POS(x) ((x) | LCD_TEXT_MODE) - -#ifdef CONFIG_MIPS_COBALT -static inline void lcd_write_control(struct fb_info *info, u8 control) -{ - writel((u32)control << 24, info->screen_base); -} - -static inline u8 lcd_read_control(struct fb_info *info) -{ - return readl(info->screen_base) >> 24; -} - -static inline void lcd_write_data(struct fb_info *info, u8 data) -{ - writel((u32)data << 24, info->screen_base + LCD_DATA_REG_OFFSET); -} - -static inline u8 lcd_read_data(struct fb_info *info) -{ - return readl(info->screen_base + LCD_DATA_REG_OFFSET) >> 24; -} -#else - -#define LCD_CTL 0x00 -#define LCD_DATA 0x08 -#define CPLD_STATUS 0x10 -#define CPLD_DATA 0x18 - -static inline void cpld_wait(struct fb_info *info) -{ - do { - } while (readl(info->screen_base + CPLD_STATUS) & 1); -} - -static inline void lcd_write_control(struct fb_info *info, u8 control) -{ - cpld_wait(info); - writel(control, info->screen_base + LCD_CTL); -} - -static inline u8 lcd_read_control(struct fb_info *info) -{ - cpld_wait(info); - readl(info->screen_base + LCD_CTL); - cpld_wait(info); - return readl(info->screen_base + CPLD_DATA) & 0xff; -} - -static inline void lcd_write_data(struct fb_info *info, u8 data) -{ - cpld_wait(info); - writel(data, info->screen_base + LCD_DATA); -} - -static inline u8 lcd_read_data(struct fb_info *info) -{ - cpld_wait(info); - readl(info->screen_base + LCD_DATA); - cpld_wait(info); - return readl(info->screen_base + CPLD_DATA) & 0xff; -} -#endif - -static int lcd_busy_wait(struct fb_info *info) -{ - u8 val = 0; - int timeout = 10, retval = 0; - - do { - val = lcd_read_control(info); - val &= LCD_BUSY; - if (val != LCD_BUSY) - break; - - if (msleep_interruptible(1)) - return -EINTR; - - timeout--; - } while (timeout); - - if (val == LCD_BUSY) - retval = -EBUSY; - - return retval; -} - -static void lcd_clear(struct fb_info *info) -{ - int i; - - for (i = 0; i < 4; i++) { - udelay(150); - - lcd_write_control(info, LCD_PRERESET); - } - - udelay(150); - - lcd_write_control(info, LCD_CLEAR); - - udelay(150); - - lcd_write_control(info, LCD_RESET); -} - -static struct fb_fix_screeninfo cobalt_lcdfb_fix = { - .id = "cobalt-lcd", - .type = FB_TYPE_TEXT, - .type_aux = FB_AUX_TEXT_MDA, - .visual = FB_VISUAL_MONO01, - .line_length = LCD_XRES_MAX, - .accel = FB_ACCEL_NONE, -}; - -static ssize_t cobalt_lcdfb_read(struct fb_info *info, char __user *buf, - size_t count, loff_t *ppos) -{ - char src[LCD_CHARS_MAX]; - unsigned long pos; - int len, retval = 0; - - pos = *ppos; - if (pos >= LCD_CHARS_MAX || count == 0) - return 0; - - if (count > LCD_CHARS_MAX) - count = LCD_CHARS_MAX; - - if (pos + count > LCD_CHARS_MAX) - count = LCD_CHARS_MAX - pos; - - for (len = 0; len < count; len++) { - retval = lcd_busy_wait(info); - if (retval < 0) - break; - - lcd_write_control(info, LCD_TEXT_POS(pos)); - - retval = lcd_busy_wait(info); - if (retval < 0) - break; - - src[len] = lcd_read_data(info); - if (pos == 0x0f) - pos = 0x40; - else - pos++; - } - - if (retval < 0 && signal_pending(current)) - return -ERESTARTSYS; - - if (copy_to_user(buf, src, len)) - return -EFAULT; - - *ppos += len; - - return len; -} - -static ssize_t cobalt_lcdfb_write(struct fb_info *info, const char __user *buf, - size_t count, loff_t *ppos) -{ - char dst[LCD_CHARS_MAX]; - unsigned long pos; - int len, retval = 0; - - pos = *ppos; - if (pos >= LCD_CHARS_MAX || count == 0) - return 0; - - if (count > LCD_CHARS_MAX) - count = LCD_CHARS_MAX; - - if (pos + count > LCD_CHARS_MAX) - count = LCD_CHARS_MAX - pos; - - if (copy_from_user(dst, buf, count)) - return -EFAULT; - - for (len = 0; len < count; len++) { - retval = lcd_busy_wait(info); - if (retval < 0) - break; - - lcd_write_control(info, LCD_TEXT_POS(pos)); - - retval = lcd_busy_wait(info); - if (retval < 0) - break; - - lcd_write_data(info, dst[len]); - if (pos == 0x0f) - pos = 0x40; - else - pos++; - } - - if (retval < 0 && signal_pending(current)) - return -ERESTARTSYS; - - *ppos += len; - - return len; -} - -static int cobalt_lcdfb_blank(int blank_mode, struct fb_info *info) -{ - int retval; - - retval = lcd_busy_wait(info); - if (retval < 0) - return retval; - - switch (blank_mode) { - case FB_BLANK_UNBLANK: - lcd_write_control(info, LCD_ON); - break; - default: - lcd_write_control(info, LCD_OFF); - break; - } - - return 0; -} - -static int cobalt_lcdfb_cursor(struct fb_info *info, struct fb_cursor *cursor) -{ - u32 x, y; - int retval; - - switch (cursor->set) { - case FB_CUR_SETPOS: - x = cursor->image.dx; - y = cursor->image.dy; - if (x >= LCD_XRES_MAX || y >= LCD_YRES_MAX) - return -EINVAL; - - retval = lcd_busy_wait(info); - if (retval < 0) - return retval; - - lcd_write_control(info, - LCD_TEXT_POS(info->fix.line_length * y + x)); - break; - default: - return -EINVAL; - } - - retval = lcd_busy_wait(info); - if (retval < 0) - return retval; - - if (cursor->enable) - lcd_write_control(info, LCD_CURSOR_ON); - else - lcd_write_control(info, LCD_CURSOR_OFF); - - return 0; -} - -static struct fb_ops cobalt_lcd_fbops = { - .owner = THIS_MODULE, - .fb_read = cobalt_lcdfb_read, - .fb_write = cobalt_lcdfb_write, - .fb_blank = cobalt_lcdfb_blank, - .fb_cursor = cobalt_lcdfb_cursor, -}; - -static int cobalt_lcdfb_probe(struct platform_device *dev) -{ - struct fb_info *info; - struct resource *res; - int retval; - - info = framebuffer_alloc(0, &dev->dev); - if (!info) - return -ENOMEM; - - res = platform_get_resource(dev, IORESOURCE_MEM, 0); - if (!res) { - framebuffer_release(info); - return -EBUSY; - } - - info->screen_size = resource_size(res); - info->screen_base = devm_ioremap(&dev->dev, res->start, - info->screen_size); - info->fbops = &cobalt_lcd_fbops; - info->fix = cobalt_lcdfb_fix; - info->fix.smem_start = res->start; - info->fix.smem_len = info->screen_size; - info->pseudo_palette = NULL; - info->par = NULL; - info->flags = FBINFO_DEFAULT; - - retval = register_framebuffer(info); - if (retval < 0) { - framebuffer_release(info); - return retval; - } - - platform_set_drvdata(dev, info); - - lcd_clear(info); - - fb_info(info, "Cobalt server LCD frame buffer device\n"); - - return 0; -} - -static int cobalt_lcdfb_remove(struct platform_device *dev) -{ - struct fb_info *info; - - info = platform_get_drvdata(dev); - if (info) { - unregister_framebuffer(info); - framebuffer_release(info); - } - - return 0; -} - -static struct platform_driver cobalt_lcdfb_driver = { - .probe = cobalt_lcdfb_probe, - .remove = cobalt_lcdfb_remove, - .driver = { - .name = "cobalt-lcd", - .owner = THIS_MODULE, - }, -}; -module_platform_driver(cobalt_lcdfb_driver); - -MODULE_LICENSE("GPL v2"); -MODULE_AUTHOR("Yoichi Yuasa"); -MODULE_DESCRIPTION("Cobalt server LCD frame buffer driver"); |