fbdev/sbus: Add initializer macros and Kconfig tokens for SBUS support

Add macros to initialize struct fb_ops for drivers that support
framebuffers on Sparc's SBUS. Also add a Kconfig token that selects
the necessary helpers.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230806120926.5368-4-tzimmermann@suse.de

diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
index 5d93ecc01f6a44d74eb2e101470c5a2098980fca..fd5bd284c0f892921f4da1b589ed6ee0963f1fd2 100644 (file)
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig
@@ -518,6 +518,12 @@ config FB_SBUS
        help
          Say Y if you want support for SBUS or UPA based frame buffer device.
 
+config FB_SBUS_HELPERS
+       bool
+       select FB_CFB_COPYAREA
+       select FB_CFB_FILLRECT
+       select FB_CFB_IMAGEBLIT
+
 config FB_BW2
        bool "BWtwo support"
        depends on (FB = y) && (SPARC && FB_SBUS)

diff --git a/drivers/video/fbdev/sbuslib.h b/drivers/video/fbdev/sbuslib.h
index 02ac1282903bf6de1b2b309701f724bc265dac9a..6466b4cbcd7b3a6afe2da66bf7688fea566856ea 100644 (file)
--- a/drivers/video/fbdev/sbuslib.h
+++ b/drivers/video/fbdev/sbuslib.h
@@ -29,4 +29,35 @@ int sbusfb_ioctl_helper(unsigned long cmd, unsigned long arg,
 int sbusfb_compat_ioctl(struct fb_info *info, unsigned int cmd,
                        unsigned long arg);
 
+/*
+ * Initialize struct fb_ops for SBUS I/O.
+ */
+
+#define __FB_DEFAULT_SBUS_OPS_RDWR(__prefix) \
+       .fb_read        = fb_io_read, \
+       .fb_write       = fb_io_write
+
+#define __FB_DEFAULT_SBUS_OPS_DRAW(__prefix) \
+       .fb_fillrect    = cfb_fillrect, \
+       .fb_copyarea    = cfb_copyarea, \
+       .fb_imageblit   = cfb_imageblit
+
+#ifdef CONFIG_COMPAT
+#define __FB_DEFAULT_SBUS_OPS_IOCTL(__prefix) \
+       .fb_ioctl               = __prefix ## _sbusfb_ioctl, \
+       .fb_compat_ioctl        = sbusfb_compat_ioctl
+#else
+#define __FB_DEFAULT_SBUS_OPS_IOCTL(__prefix) \
+       .fb_ioctl       = __prefix ## _sbusfb_ioctl
+#endif
+
+#define __FB_DEFAULT_SBUS_OPS_MMAP(__prefix) \
+       .fb_mmap        = __prefix ## _sbusfb_mmap
+
+#define FB_DEFAULT_SBUS_OPS(__prefix) \
+       __FB_DEFAULT_SBUS_OPS_RDWR(__prefix), \
+       __FB_DEFAULT_SBUS_OPS_DRAW(__prefix), \
+       __FB_DEFAULT_SBUS_OPS_IOCTL(__prefix), \
+       __FB_DEFAULT_SBUS_OPS_MMAP(__prefix)
+
 #endif /* _SBUSLIB_H */