From 08f87f769b595151be1afeff53e144f543faa614 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 06 Dec 2023 09:51:13 +0000
Subject: [PATCH] add dts config
---
kernel/drivers/media/pci/ivtv/ivtvfb.c | 59 ++++++++++++++++++++++++++++++++---------------------------
1 files changed, 32 insertions(+), 27 deletions(-)
diff --git a/kernel/drivers/media/pci/ivtv/ivtvfb.c b/kernel/drivers/media/pci/ivtv/ivtvfb.c
index 5ddaa8e..e2d56dc 100644
--- a/kernel/drivers/media/pci/ivtv/ivtvfb.c
+++ b/kernel/drivers/media/pci/ivtv/ivtvfb.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
On Screen Display cx23415 Framebuffer driver
@@ -23,19 +24,6 @@
Copyright (C) 2006 Ian Armstrong <ian@iarmst.demon.co.uk>
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "ivtv-driver.h"
@@ -49,12 +37,13 @@
#include <linux/ivtvfb.h>
#ifdef CONFIG_X86_64
-#include <asm/pat.h>
+#include <asm/memtype.h>
#endif
/* card parameters */
static int ivtvfb_card_id = -1;
static int ivtvfb_debug = 0;
+static bool ivtvfb_force_pat = IS_ENABLED(CONFIG_VIDEO_FB_IVTV_FORCE_PAT);
static bool osd_laced;
static int osd_depth;
static int osd_upper;
@@ -64,6 +53,7 @@
module_param(ivtvfb_card_id, int, 0444);
module_param_named(debug,ivtvfb_debug, int, 0644);
+module_param_named(force_pat, ivtvfb_force_pat, bool, 0644);
module_param(osd_laced, bool, 0444);
module_param(osd_depth, int, 0444);
module_param(osd_upper, int, 0444);
@@ -78,6 +68,9 @@
MODULE_PARM_DESC(debug,
"Debug level (bitmask). Default: errors only\n"
"\t\t\t(debug = 3 gives full debugging)");
+
+MODULE_PARM_DESC(force_pat,
+ "Force initialization on x86 PAT-enabled systems (bool).\n");
/* Why upper, left, xres, yres, depth, laced ? To match terminology used
by fbset.
@@ -288,10 +281,10 @@
/* Map User DMA */
if (ivtv_udma_setup(itv, ivtv_dest_addr, userbuf, size_in_bytes) <= 0) {
mutex_unlock(&itv->udma.lock);
- IVTVFB_WARN("ivtvfb_prep_dec_dma_to_device, Error with get_user_pages: %d bytes, %d pages returned\n",
+ IVTVFB_WARN("ivtvfb_prep_dec_dma_to_device, Error with pin_user_pages: %d bytes, %d pages returned\n",
size_in_bytes, itv->udma.page_count);
- /* get_user_pages must have failed completely */
+ /* pin_user_pages must have failed completely */
return -EIO;
}
@@ -356,7 +349,7 @@
IVTVFB_WARN("ivtvfb_prep_frame: Count not a multiple of 4 (%d)\n", count);
/* Check Source */
- if (!access_ok(VERIFY_READ, source + dest_offset, count)) {
+ if (!access_ok(source + dest_offset, count)) {
IVTVFB_WARN("Invalid userspace pointer %p\n", source);
IVTVFB_DEBUG_WARN("access_ok() failed for offset 0x%08lx source %p count %d\n",
@@ -624,7 +617,7 @@
IVTVFB_DEBUG_INFO("ivtvfb_get_fix\n");
memset(fix, 0, sizeof(struct fb_fix_screeninfo));
- strlcpy(fix->id, "cx23415 TV out", sizeof(fix->id));
+ strscpy(fix->id, "cx23415 TV out", sizeof(fix->id));
fix->smem_start = oi->video_pbase;
fix->smem_len = oi->video_buffer_size;
fix->type = FB_TYPE_PACKED_PIXELS;
@@ -932,7 +925,7 @@
return 0;
}
-static struct fb_ops ivtvfb_ops = {
+static const struct fb_ops ivtvfb_ops = {
.owner = THIS_MODULE,
.fb_write = ivtvfb_write,
.fb_check_var = ivtvfb_check_var,
@@ -1056,7 +1049,6 @@
oi->ivtvfb_info.node = -1;
oi->ivtvfb_info.flags = FBINFO_FLAG_DEFAULT;
- oi->ivtvfb_info.fbops = &ivtvfb_ops;
oi->ivtvfb_info.par = itv;
oi->ivtvfb_info.var = oi->ivtvfb_defined;
oi->ivtvfb_info.fix = oi->ivtvfb_fix;
@@ -1167,8 +1159,15 @@
#ifdef CONFIG_X86_64
if (pat_enabled()) {
- pr_warn("ivtvfb needs PAT disabled, boot with nopat kernel parameter\n");
- return -ENODEV;
+ if (ivtvfb_force_pat) {
+ pr_info("PAT is enabled. Write-combined framebuffer caching will be disabled.\n");
+ pr_info("To enable caching, boot with nopat kernel parameter\n");
+ } else {
+ pr_warn("ivtvfb needs PAT disabled for write-combined framebuffer caching.\n");
+ pr_warn("Boot with nopat kernel parameter to use caching, or use the\n");
+ pr_warn("force_pat module parameter to run with caching disabled\n");
+ return -ENODEV;
+ }
}
#endif
@@ -1220,6 +1219,11 @@
/* Allocate DMA */
ivtv_udma_alloc(itv);
+ itv->streams[IVTV_DEC_STREAM_TYPE_YUV].vdev.device_caps |=
+ V4L2_CAP_VIDEO_OUTPUT_OVERLAY;
+ itv->streams[IVTV_DEC_STREAM_TYPE_MPG].vdev.device_caps |=
+ V4L2_CAP_VIDEO_OUTPUT_OVERLAY;
+ itv->v4l2_cap |= V4L2_CAP_VIDEO_OUTPUT_OVERLAY;
return 0;
}
@@ -1246,11 +1250,12 @@
struct osd_info *oi = itv->osd_info;
if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
- if (unregister_framebuffer(&itv->osd_info->ivtvfb_info)) {
- IVTVFB_WARN("Framebuffer %d is in use, cannot unload\n",
- itv->instance);
- return 0;
- }
+ itv->streams[IVTV_DEC_STREAM_TYPE_YUV].vdev.device_caps &=
+ ~V4L2_CAP_VIDEO_OUTPUT_OVERLAY;
+ itv->streams[IVTV_DEC_STREAM_TYPE_MPG].vdev.device_caps &=
+ ~V4L2_CAP_VIDEO_OUTPUT_OVERLAY;
+ itv->v4l2_cap &= ~V4L2_CAP_VIDEO_OUTPUT_OVERLAY;
+ unregister_framebuffer(&itv->osd_info->ivtvfb_info);
IVTVFB_INFO("Unregister framebuffer %d\n", itv->instance);
itv->ivtvfb_restore = NULL;
ivtvfb_blank(FB_BLANK_VSYNC_SUSPEND, &oi->ivtvfb_info);
--
Gitblit v1.6.2