diff options
| author | Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> | 2020-03-24 14:45:04 +0100 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> | 2020-04-17 15:50:02 +0200 |
| commit | a07a63b0e24dd1316d11427601a9f83dc955bb40 (patch) | |
| tree | 6a300c07e04128a30720fb3b968db43b9c2305ee /drivers | |
| parent | 38bf1077cf24cc20fdf459e51bb87b553f4fb79d (diff) | |
video: fbdev: controlfb: add COMPILE_TEST support
Add COMPILE_TEST support to controlfb driver for better compile
testing coverage.
While at it:
- convert driver to use eieio() and dcbf() helpers instead of
open-coding them
- add invalid_vram_cache() helper to avoid code duplication
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200324134508.25120-3-b.zolnierkie@samsung.com
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/video/fbdev/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/video/fbdev/controlfb.c | 41 |
2 files changed, 29 insertions, 14 deletions
diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig index 91b0a719d221..fa88e8b9a83d 100644 --- a/drivers/video/fbdev/Kconfig +++ b/drivers/video/fbdev/Kconfig @@ -472,7 +472,7 @@ config FB_OF config FB_CONTROL bool "Apple \"control\" display support" - depends on (FB = y) && PPC_PMAC && PPC32 + depends on (FB = y) && ((PPC_PMAC && PPC32) || COMPILE_TEST) select FB_CFB_FILLRECT select FB_CFB_COPYAREA select FB_CFB_IMAGEBLIT diff --git a/drivers/video/fbdev/controlfb.c b/drivers/video/fbdev/controlfb.c index 50fc52f34db0..5442318b21b6 100644 --- a/drivers/video/fbdev/controlfb.c +++ b/drivers/video/fbdev/controlfb.c @@ -48,12 +48,37 @@ #include <linux/nvram.h> #include <linux/adb.h> #include <linux/cuda.h> +#ifdef CONFIG_PPC_PMAC #include <asm/prom.h> #include <asm/btext.h> +#endif #include "macmodes.h" #include "controlfb.h" +#ifndef CONFIG_PPC_PMAC +#define invalid_vram_cache(addr) +#undef in_8 +#undef out_8 +#undef in_le32 +#undef out_le32 +#define in_8(addr) 0 +#define out_8(addr, val) +#define in_le32(addr) 0 +#define out_le32(addr, val) +#define pgprot_cached_wthru(prot) (prot) +#else +static void invalid_vram_cache(void __force *addr) +{ + eieio(); + dcbf(addr); + mb(); + eieio(); + dcbf(addr); + mb(); +} +#endif + struct fb_par_control { int vmode, cmode; int xres, yres; @@ -309,7 +334,7 @@ static int controlfb_mmap(struct fb_info *info, static int controlfb_blank(int blank_mode, struct fb_info *info) { - struct fb_info_control *p = + struct fb_info_control __maybe_unused *p = container_of(info, struct fb_info_control, info); unsigned ctrl; @@ -605,12 +630,7 @@ static void __init find_vram_size(struct fb_info_control *p) out_8(&p->frame_buffer[0x600000], 0xb3); out_8(&p->frame_buffer[0x600001], 0x71); - asm volatile("eieio; dcbf 0,%0" : : "r" (&p->frame_buffer[0x600000]) - : "memory" ); - mb(); - asm volatile("eieio; dcbi 0,%0" : : "r" (&p->frame_buffer[0x600000]) - : "memory" ); - mb(); + invalid_vram_cache(&p->frame_buffer[0x600000]); bank2 = (in_8(&p->frame_buffer[0x600000]) == 0xb3) && (in_8(&p->frame_buffer[0x600001]) == 0x71); @@ -624,12 +644,7 @@ static void __init find_vram_size(struct fb_info_control *p) out_8(&p->frame_buffer[0], 0x5a); out_8(&p->frame_buffer[1], 0xc7); - asm volatile("eieio; dcbf 0,%0" : : "r" (&p->frame_buffer[0]) - : "memory" ); - mb(); - asm volatile("eieio; dcbi 0,%0" : : "r" (&p->frame_buffer[0]) - : "memory" ); - mb(); + invalid_vram_cache(&p->frame_buffer[0]); bank1 = (in_8(&p->frame_buffer[0]) == 0x5a) && (in_8(&p->frame_buffer[1]) == 0xc7); |