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author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-03-09 14:45:54 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-03-09 14:45:54 -0800 |
commit | 96a6de1a541c86e9e67b9c310c14db4099bd1cbc (patch) | |
tree | e77eb0e998e996f53dd0709611bd8cdd8776ee70 /drivers/media/pci/ivtv/ivtvfb.c | |
parent | 36011ddc78395b59a8a418c37f20bcc18828f1ef (diff) | |
parent | 15d90a6ae98e6d2c68497b44a491cb9efbb98ab1 (diff) | |
download | linux-96a6de1a541c86e9e67b9c310c14db4099bd1cbc.tar.bz2 |
Merge tag 'media/v5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
- remove sensor drivers that got converted from soc_camera
- remaining soc_camera drivers got moved to staging
- some documentation cleanups and improvements
- the imx staging driver now supports imx7
- the ov9640, mt9m001 and mt9m111 got converted from soc_camera
- the vim2m driver now does what a m2m convert driver expects to do
- epoll() fixes on media subsystems
- several drivers fixes, typos, cleanups and improvements
* tag 'media/v5.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (346 commits)
media: dvb/earth-pt1: fix wrong initialization for demod blocks
media: vim2m: Address some coding style issues
media: vim2m: don't use BUG()
media: vim2m: speedup passthrough copy
media: vim2m: add an horizontal scaler
media: vim2m: don't accept YUYV anymore as output format
media: vim2m: add vertical linear scaler
media: vim2m: better handle cap/out buffers with different sizes
media: vim2m: use different framesizes for bayer formats
media: vim2m: add support for VIDIOC_ENUM_FRAMESIZES
media: vim2m: ensure that width is multiple of two
media: vim2m: improve debug messages
media: vim2m: add bayer capture formats
media: a few more typos at staging, pci, platform, radio and usb
media: Documentation: fix several typos
media: staging: fix several typos
media: include: fix several typos
media: common: fix several typos
media: v4l2-core: fix several typos
media: usb: fix several typos
...
Diffstat (limited to 'drivers/media/pci/ivtv/ivtvfb.c')
-rw-r--r-- | drivers/media/pci/ivtv/ivtvfb.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/media/pci/ivtv/ivtvfb.c b/drivers/media/pci/ivtv/ivtvfb.c index 8ec2525d8ef5..cfd21040d0e3 100644 --- a/drivers/media/pci/ivtv/ivtvfb.c +++ b/drivers/media/pci/ivtv/ivtvfb.c @@ -55,6 +55,7 @@ /* 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 +65,7 @@ static 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); @@ -79,6 +81,9 @@ 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 */ @@ -1167,8 +1172,15 @@ static int ivtvfb_init_card(struct ivtv *itv) #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 |