[PATCH v10 3/6] fbmon: add videomode helpers
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STALE5092d
SUPERSEDED
From: Steffen Trumtrar <hidden>
Date: 2012-11-15 09:23:54
Also in:
dri-devel, linux-devicetree, linux-media
Subsystem:
framebuffer layer, the rest · Maintainers:
Helge Deller, Linus Torvalds
Status: Superseded by v17 (posted 2013-01-25). [go to v17]
Revision v10 (8 revisions archived).
Revisions (8)
Add a function to convert from the generic videomode to a fb_videomode. Signed-off-by: Steffen Trumtrar <redacted> --- drivers/video/fbmon.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ include/linux/fb.h | 6 ++++++ 2 files changed, 52 insertions(+)
diff --git a/drivers/video/fbmon.c b/drivers/video/fbmon.c
index cef6557..247e079 100644
--- a/drivers/video/fbmon.c
+++ b/drivers/video/fbmon.c@@ -31,6 +31,7 @@ #include <linux/pci.h> #include <linux/slab.h> #include <video/edid.h> +#include <linux/videomode.h> #ifdef CONFIG_PPC_OF #include <asm/prom.h> #include <asm/pci-bridge.h>
@@ -1373,6 +1374,51 @@ int fb_get_mode(int flags, u32 val, struct fb_var_screeninfo *var, struct fb_inf kfree(timings); return err; } + +#if IS_ENABLED(CONFIG_VIDEOMODE) +int fb_videomode_from_videomode(struct videomode *vm, + struct fb_videomode *fbmode) +{ + unsigned int htotal, vtotal; + + fbmode->xres = vm->hactive; + fbmode->left_margin = vm->hback_porch; + fbmode->right_margin = vm->hfront_porch; + fbmode->hsync_len = vm->hsync_len; + + fbmode->yres = vm->vactive; + fbmode->upper_margin = vm->vback_porch; + fbmode->lower_margin = vm->vfront_porch; + fbmode->vsync_len = vm->vsync_len; + + fbmode->pixclock = KHZ2PICOS(vm->pixelclock / 1000); + + fbmode->sync = 0; + fbmode->vmode = 0; + if (vm->hah) + fbmode->sync |= FB_SYNC_HOR_HIGH_ACT; + if (vm->vah) + fbmode->sync |= FB_SYNC_VERT_HIGH_ACT; + if (vm->interlaced) + fbmode->vmode |= FB_VMODE_INTERLACED; + if (vm->doublescan) + fbmode->vmode |= FB_VMODE_DOUBLE; + if (vm->de) + fbmode->sync |= FB_SYNC_DATA_ENABLE_HIGH_ACT; + fbmode->flag = 0; + + htotal = vm->hactive + vm->hfront_porch + vm->hback_porch + + vm->hsync_len; + vtotal = vm->vactive + vm->vfront_porch + vm->vback_porch + + vm->vsync_len; + fbmode->refresh = (vm->pixelclock * 1000) / (htotal * vtotal); + + return 0; +} +EXPORT_SYMBOL_GPL(fb_videomode_from_videomode); +#endif + + #else int fb_parse_edid(unsigned char *edid, struct fb_var_screeninfo *var) {
diff --git a/include/linux/fb.h b/include/linux/fb.h
index c7a9571..4024136 100644
--- a/include/linux/fb.h
+++ b/include/linux/fb.h@@ -14,6 +14,7 @@ #include <linux/backlight.h> #include <linux/slab.h> #include <asm/io.h> +#include <linux/videomode.h> struct vm_area_struct; struct fb_info;
@@ -714,6 +715,11 @@ extern void fb_destroy_modedb(struct fb_videomode *modedb); extern int fb_find_mode_cvt(struct fb_videomode *mode, int margins, int rb); extern unsigned char *fb_ddc_read(struct i2c_adapter *adapter); +#if IS_ENABLED(CONFIG_VIDEOMODE) +extern int fb_videomode_from_videomode(struct videomode *vm, + struct fb_videomode *fbmode); +#endif + /* drivers/video/modedb.c */ #define VESA_MODEDB_SIZE 34 extern void fb_var_to_videomode(struct fb_videomode *mode,
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