diff options
Diffstat (limited to 'include/linux/fb.h')
| -rw-r--r-- | include/linux/fb.h | 177 |
1 files changed, 124 insertions, 53 deletions
diff --git a/include/linux/fb.h b/include/linux/fb.h index 08cb47da71f8..ce7d588edc3e 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -15,7 +15,8 @@ #include <linux/list.h> #include <linux/backlight.h> #include <linux/slab.h> -#include <asm/io.h> + +#include <asm/fb.h> struct vm_area_struct; struct fb_info; @@ -511,58 +512,6 @@ struct fb_info { */ #define STUPID_ACCELF_TEXT_SHIT -// This will go away -#if defined(__sparc__) - -/* We map all of our framebuffers such that big-endian accesses - * are what we want, so the following is sufficient. - */ - -// This will go away -#define fb_readb sbus_readb -#define fb_readw sbus_readw -#define fb_readl sbus_readl -#define fb_readq sbus_readq -#define fb_writeb sbus_writeb -#define fb_writew sbus_writew -#define fb_writel sbus_writel -#define fb_writeq sbus_writeq -#define fb_memset sbus_memset_io -#define fb_memcpy_fromfb sbus_memcpy_fromio -#define fb_memcpy_tofb sbus_memcpy_toio - -#elif defined(__i386__) || defined(__alpha__) || defined(__x86_64__) || \ - defined(__hppa__) || defined(__sh__) || defined(__powerpc__) || \ - defined(__arm__) || defined(__aarch64__) || defined(__mips__) - -#define fb_readb __raw_readb -#define fb_readw __raw_readw -#define fb_readl __raw_readl -#define fb_readq __raw_readq -#define fb_writeb __raw_writeb -#define fb_writew __raw_writew -#define fb_writel __raw_writel -#define fb_writeq __raw_writeq -#define fb_memset memset_io -#define fb_memcpy_fromfb memcpy_fromio -#define fb_memcpy_tofb memcpy_toio - -#else - -#define fb_readb(addr) (*(volatile u8 *) (addr)) -#define fb_readw(addr) (*(volatile u16 *) (addr)) -#define fb_readl(addr) (*(volatile u32 *) (addr)) -#define fb_readq(addr) (*(volatile u64 *) (addr)) -#define fb_writeb(b,addr) (*(volatile u8 *) (addr) = (b)) -#define fb_writew(b,addr) (*(volatile u16 *) (addr) = (b)) -#define fb_writel(b,addr) (*(volatile u32 *) (addr) = (b)) -#define fb_writeq(b,addr) (*(volatile u64 *) (addr) = (b)) -#define fb_memset memset -#define fb_memcpy_fromfb memcpy -#define fb_memcpy_tofb memcpy - -#endif - #define FB_LEFT_POS(p, bpp) (fb_be_math(p) ? (32 - (bpp)) : 0) #define FB_SHIFT_HIGH(p, val, bits) (fb_be_math(p) ? (val) >> (bits) : \ (val) << (bits)) @@ -576,12 +525,44 @@ struct fb_info { extern int fb_set_var(struct fb_info *info, struct fb_var_screeninfo *var); extern int fb_pan_display(struct fb_info *info, struct fb_var_screeninfo *var); extern int fb_blank(struct fb_info *info, int blank); + +/* + * Drawing operations where framebuffer is in I/O memory + */ + extern void cfb_fillrect(struct fb_info *info, const struct fb_fillrect *rect); extern void cfb_copyarea(struct fb_info *info, const struct fb_copyarea *area); extern void cfb_imageblit(struct fb_info *info, const struct fb_image *image); +extern ssize_t fb_io_read(struct fb_info *info, char __user *buf, + size_t count, loff_t *ppos); +extern ssize_t fb_io_write(struct fb_info *info, const char __user *buf, + size_t count, loff_t *ppos); + +/* + * Initializes struct fb_ops for framebuffers in I/O memory. + */ + +#define __FB_DEFAULT_IO_OPS_RDWR \ + .fb_read = fb_io_read, \ + .fb_write = fb_io_write + +#define __FB_DEFAULT_IO_OPS_DRAW \ + .fb_fillrect = cfb_fillrect, \ + .fb_copyarea = cfb_copyarea, \ + .fb_imageblit = cfb_imageblit + +#define __FB_DEFAULT_IO_OPS_MMAP \ + .fb_mmap = NULL /* default implementation */ + +#define FB_DEFAULT_IO_OPS \ + __FB_DEFAULT_IO_OPS_RDWR, \ + __FB_DEFAULT_IO_OPS_DRAW, \ + __FB_DEFAULT_IO_OPS_MMAP + /* * Drawing operations where framebuffer is in system RAM */ + extern void sys_fillrect(struct fb_info *info, const struct fb_fillrect *rect); extern void sys_copyarea(struct fb_info *info, const struct fb_copyarea *area); extern void sys_imageblit(struct fb_info *info, const struct fb_image *image); @@ -590,6 +571,27 @@ extern ssize_t fb_sys_read(struct fb_info *info, char __user *buf, extern ssize_t fb_sys_write(struct fb_info *info, const char __user *buf, size_t count, loff_t *ppos); +/* + * Initializes struct fb_ops for framebuffers in system memory. + */ + +#define __FB_DEFAULT_SYS_OPS_RDWR \ + .fb_read = fb_sys_read, \ + .fb_write = fb_sys_write + +#define __FB_DEFAULT_SYS_OPS_DRAW \ + .fb_fillrect = sys_fillrect, \ + .fb_copyarea = sys_copyarea, \ + .fb_imageblit = sys_imageblit + +#define __FB_DEFAULT_SYS_OPS_MMAP \ + .fb_mmap = NULL /* default implementation */ + +#define FB_DEFAULT_SYS_OPS \ + __FB_DEFAULT_SYS_OPS_RDWR, \ + __FB_DEFAULT_SYS_OPS_DRAW, \ + __FB_DEFAULT_SYS_OPS_MMAP + /* drivers/video/fbmem.c */ extern int register_framebuffer(struct fb_info *fb_info); extern void unregister_framebuffer(struct fb_info *fb_info); @@ -645,6 +647,75 @@ extern void fb_deferred_io_cleanup(struct fb_info *info); extern int fb_deferred_io_fsync(struct file *file, loff_t start, loff_t end, int datasync); +/* + * Generate callbacks for deferred I/O + */ + +#define __FB_GEN_DEFAULT_DEFERRED_OPS_RDWR(__prefix, __damage_range, __mode) \ + static ssize_t __prefix ## _defio_read(struct fb_info *info, char __user *buf, \ + size_t count, loff_t *ppos) \ + { \ + return fb_ ## __mode ## _read(info, buf, count, ppos); \ + } \ + static ssize_t __prefix ## _defio_write(struct fb_info *info, const char __user *buf, \ + size_t count, loff_t *ppos) \ + { \ + unsigned long offset = *ppos; \ + ssize_t ret = fb_ ## __mode ## _write(info, buf, count, ppos); \ + if (ret > 0) \ + __damage_range(info, offset, ret); \ + return ret; \ + } + +#define __FB_GEN_DEFAULT_DEFERRED_OPS_DRAW(__prefix, __damage_area, __mode) \ + static void __prefix ## _defio_fillrect(struct fb_info *info, \ + const struct fb_fillrect *rect) \ + { \ + __mode ## _fillrect(info, rect); \ + __damage_area(info, rect->dx, rect->dy, rect->width, rect->height); \ + } \ + static void __prefix ## _defio_copyarea(struct fb_info *info, \ + const struct fb_copyarea *area) \ + { \ + __mode ## _copyarea(info, area); \ + __damage_area(info, area->dx, area->dy, area->width, area->height); \ + } \ + static void __prefix ## _defio_imageblit(struct fb_info *info, \ + const struct fb_image *image) \ + { \ + __mode ## _imageblit(info, image); \ + __damage_area(info, image->dx, image->dy, image->width, image->height); \ + } + +#define FB_GEN_DEFAULT_DEFERRED_IO_OPS(__prefix, __damage_range, __damage_area) \ + __FB_GEN_DEFAULT_DEFERRED_OPS_RDWR(__prefix, __damage_range, io) \ + __FB_GEN_DEFAULT_DEFERRED_OPS_DRAW(__prefix, __damage_area, cfb) + +#define FB_GEN_DEFAULT_DEFERRED_SYS_OPS(__prefix, __damage_range, __damage_area) \ + __FB_GEN_DEFAULT_DEFERRED_OPS_RDWR(__prefix, __damage_range, sys) \ + __FB_GEN_DEFAULT_DEFERRED_OPS_DRAW(__prefix, __damage_area, sys) + +/* + * Initializes struct fb_ops for deferred I/O. + */ + +#define __FB_DEFAULT_DEFERRED_OPS_RDWR(__prefix) \ + .fb_read = __prefix ## _defio_read, \ + .fb_write = __prefix ## _defio_write + +#define __FB_DEFAULT_DEFERRED_OPS_DRAW(__prefix) \ + .fb_fillrect = __prefix ## _defio_fillrect, \ + .fb_copyarea = __prefix ## _defio_copyarea, \ + .fb_imageblit = __prefix ## _defio_imageblit + +#define __FB_DEFAULT_DEFERRED_OPS_MMAP(__prefix) \ + .fb_mmap = fb_deferred_io_mmap + +#define FB_DEFAULT_DEFERRED_OPS(__prefix) \ + __FB_DEFAULT_DEFERRED_OPS_RDWR(__prefix), \ + __FB_DEFAULT_DEFERRED_OPS_DRAW(__prefix), \ + __FB_DEFAULT_DEFERRED_OPS_MMAP(__prefix) + static inline bool fb_be_math(struct fb_info *info) { #ifdef CONFIG_FB_FOREIGN_ENDIAN |