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path: root/drivers/media/pci/ivtv/ivtvfb.c
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Diffstat (limited to 'drivers/media/pci/ivtv/ivtvfb.c')
-rw-r--r--drivers/media/pci/ivtv/ivtvfb.c83
1 files changed, 44 insertions, 39 deletions
diff --git a/drivers/media/pci/ivtv/ivtvfb.c b/drivers/media/pci/ivtv/ivtvfb.c
index 8ec2525d8ef5..90c584cf97c2 100644
--- a/drivers/media/pci/ivtv/ivtvfb.c
+++ b/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"
@@ -48,28 +36,30 @@
#include <linux/fb.h>
#include <linux/ivtvfb.h>
-#ifdef CONFIG_X86_64
-#include <asm/pat.h>
+#if defined(CONFIG_X86_64) && !defined(CONFIG_UML)
+#include <asm/memtype.h>
#endif
/* card parameters */
static int ivtvfb_card_id = -1;
-static int ivtvfb_debug = 0;
+static int ivtvfb_debug;
+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;
static int osd_left;
-static int osd_yres;
-static int osd_xres;
+static unsigned int osd_yres;
+static unsigned int osd_xres;
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);
module_param(osd_left, int, 0444);
-module_param(osd_yres, int, 0444);
-module_param(osd_xres, int, 0444);
+module_param(osd_yres, uint, 0444);
+module_param(osd_xres, uint, 0444);
MODULE_PARM_DESC(ivtvfb_card_id,
"Only use framebuffer of the specified ivtv card (0-31)\n"
@@ -79,6 +69,9 @@ 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.
Why start at 1 for left & upper coordinate ? Because X doesn't allow 0 */
@@ -111,6 +104,7 @@ MODULE_PARM_DESC(osd_xres,
"\t\t\tdefault 640");
MODULE_AUTHOR("Kevin Thayer, Chris Kennedy, Hans Verkuil, John Harvey, Ian Armstrong");
+MODULE_DESCRIPTION("Conexant cx23415 framebuffer support");
MODULE_LICENSE("GPL");
/* --------------------------------------------------------------------- */
@@ -288,10 +282,10 @@ static int ivtvfb_prep_dec_dma_to_device(struct ivtv *itv,
/* 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",
- size_in_bytes, itv->udma.page_count);
+ IVTVFB_WARN("%s, Error in ivtv_udma_setup: %d bytes, %d pages returned\n",
+ __func__, size_in_bytes, itv->udma.page_count);
- /* get_user_pages must have failed completely */
+ /* pin_user_pages or DMA must have failed completely */
return -EIO;
}
@@ -385,8 +379,8 @@ static ssize_t ivtvfb_write(struct fb_info *info, const char __user *buf,
unsigned long dma_size;
u16 lead = 0, tail = 0;
- if (info->state != FBINFO_STATE_RUNNING)
- return -EPERM;
+ if (!info->screen_base)
+ return -ENODEV;
total_size = info->screen_size;
@@ -932,19 +926,19 @@ static int ivtvfb_blank(int blank_mode, struct fb_info *info)
return 0;
}
-static struct fb_ops ivtvfb_ops = {
+static const struct fb_ops ivtvfb_ops = {
.owner = THIS_MODULE,
+ .fb_read = fb_io_read,
.fb_write = ivtvfb_write,
.fb_check_var = ivtvfb_check_var,
.fb_set_par = ivtvfb_set_par,
.fb_setcolreg = ivtvfb_setcolreg,
- .fb_fillrect = cfb_fillrect,
- .fb_copyarea = cfb_copyarea,
- .fb_imageblit = cfb_imageblit,
+ __FB_DEFAULT_IOMEM_OPS_DRAW,
.fb_cursor = NULL,
.fb_ioctl = ivtvfb_ioctl,
.fb_pan_display = ivtvfb_pan_display,
.fb_blank = ivtvfb_blank,
+ __FB_DEFAULT_IOMEM_OPS_MMAP,
};
/* Restore hardware after firmware restart */
@@ -1055,8 +1049,6 @@ static int ivtvfb_init_vidmode(struct ivtv *itv)
/* Generate valid fb_info */
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;
@@ -1165,10 +1157,17 @@ static int ivtvfb_init_card(struct ivtv *itv)
{
int rc;
-#ifdef CONFIG_X86_64
+#if defined(CONFIG_X86_64) && !defined(CONFIG_UML)
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 @@ static int ivtvfb_init_card(struct ivtv *itv)
/* 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 @@ static int ivtvfb_callback_cleanup(struct device *dev, void *p)
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);
generated by cgit (git 2.34.1) at 2025-12-26 03:01:32 +0000