From: Daniel Palmer <daniel@0x0f.com>
To: deller@gmx.de
Cc: linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org,
linux-kernel@vger.kernel.org, Daniel Palmer <daniel@0x0f.com>
Subject: [PATCH v2 4/5] fbdev: tdfxfb: Wake the VGA core before programming the CRTC
Date: Fri, 31 Jul 2026 21:19:13 +0900 [thread overview]
Message-ID: <20260731121915.3362232-5-daniel@0x0f.com> (raw)
In-Reply-To: <20260731121915.3362232-1-daniel@0x0f.com>
If the card was unbooted the VGA core needs to be woken up before
poking at it.
Signed-off-by: Daniel Palmer <daniel@0x0f.com>
---
drivers/video/fbdev/tdfxfb.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/video/fbdev/tdfxfb.c b/drivers/video/fbdev/tdfxfb.c
index 4d92ab5b5430..f2b658a47135 100644
--- a/drivers/video/fbdev/tdfxfb.c
+++ b/drivers/video/fbdev/tdfxfb.c
@@ -485,6 +485,10 @@ static void do_write_regs(struct fb_info *info, struct banshee_reg *reg)
tdfx_outl(par, MISCINIT1, tdfx_inl(par, MISCINIT1) | 0x01);
+ /* Wake the VGA core if it hasn't already been woken up */
+ tdfx_outl(par, VGAINIT0, reg->vgainit0);
+ vga_outb(par, 0x3c3, 0x01);
+
crt_outb(par, 0x11, crt_inb(par, 0x11) & 0x7f); /* CRT unprotect */
banshee_make_room(par, 3);
--
2.53.0
next prev parent reply other threads:[~2026-07-31 12:19 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-31 12:19 [PATCH v2 0/5] fbdev: tdfxfb: Make "unbooted" cards work Daniel Palmer
2026-07-31 12:19 ` [PATCH v2 1/5] fbdev: tdfxfb: Add helper to read config table from BIOS Daniel Palmer
2026-07-31 12:19 ` [PATCH v2 2/5] fbdev: tdfxfb: Attempt to detect if the card wasn't booted Daniel Palmer
2026-07-31 12:19 ` [PATCH v2 3/5] fbdev: tdfxfb: Manually boot unbooted cards Daniel Palmer
2026-07-31 12:19 ` Daniel Palmer [this message]
2026-07-31 12:19 ` [PATCH v2 5/5] fbdev: tdfxfb: Program the initial video mode Daniel Palmer
2026-07-31 12:38 ` [PATCH v2 0/5] fbdev: tdfxfb: Make "unbooted" cards work Helge Deller
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