user/sven/linux.git/drivers/video/fbdev/gbefb.c, branch v6.2.7

fbdev: gbefb: Convert sysfs snprintf to sysfs_emit

2022-10-18T08:28:41Z

Follow the advice of the Documentation/filesystems/sysfs.rst and show() should only use sysfs_emit() or sysfs_emit_at() when formatting the value to be returned to user space. Signed-off-by: Xuezhi Zhang Signed-off-by: Helge Deller

fbdev: gbefb: Convert to use dev_groups

2022-10-08T13:20:09Z

The driver core supports the ability to handle the creation and removal of device-specific sysfs files in a race-free manner. Moreover, it can guarantee the success of creation. Therefore, it should be better to convert to use dev_groups. Signed-off-by: Jiasheng Jiang Signed-off-by: Helge Deller

video: fbdev: gbefb: Only instantiate device when built for IP32

2021-10-06T09:12:28Z

The gbefb driver not only registers a driver but also the device for that driver. This is all well and good when run on the IP32 machines that are supported by the driver but since the driver supports building with COMPILE_TEST we might also be building on other platforms which do not have this hardware and will crash instantiating the driver. Add an IS_ENABLED() check so we compile out the device registration if we don't have the Kconfig option for the machine enabled. Fixes: 552ccf6b259d290c0c ("video: fbdev: gbefb: add COMPILE_TEST support") Signed-off-by: Mark Brown Cc: Bartlomiej Zolnierkiewicz Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20210921212102.30803-1-broonie@kernel.org Signed-off-by: Maarten Lankhorst

video: fbdev: gbefb: Fix set but not used warning

2020-12-08T17:35:24Z

The variable "x" was set but never used. Drop the redundant assignments. Signed-off-by: Sam Ravnborg Acked-by: Thomas Zimmermann Cc: Sam Ravnborg Link: https://patchwork.freedesktop.org/patch/msgid/20201206190247.1861316-11-sam@ravnborg.org

video: constify fb ops across all drivers

2019-12-05T08:57:53Z

Now that the fbops member of struct fb_info is const, we can start making the ops const as well. This does not cover all drivers; some actually modify the fbops struct, for example to adjust for different configurations, and others do more involved things that I'd rather not touch in practically obsolete drivers. Mostly this is the low hanging fruit where we can add "const" and be done with it. v3: - un-constify atyfb, mb862xx, nvidia and uvesabf (0day) v2: - fix typo (Christophe de Dinechin) - use "static const" instead of "const static" in mx3fb.c - also constify smscufx.c Cc: linux-fbdev@vger.kernel.org Reviewed-by: Daniel Vetter Signed-off-by: Jani Nikula Link: https://patchwork.freedesktop.org/patch/msgid/ce67f14435f3af498f2e8bf35ce4be11f7504132.1575390740.git.jani.nikula@intel.com

video: fbdev: gbefb: add COMPILE_TEST support

2019-06-07T12:38:07Z

Add COMPILE_TEST support to gbefb driver for better compile testing coverage. While at it convert bogus udelay() calls to mdelay() (needed to build driver on ARM) and remove dead x86 specific code. Signed-off-by: Bartlomiej Zolnierkiewicz

gbefb: switch to managed version of the DMA allocator

2019-04-08T15:52:29Z

gbefb uses managed resources, so it should do the same for DMA allocations. Signed-off-by: Christoph Hellwig Acked-by: Bartlomiej Zolnierkiewicz

dma, mm/pat: Rename dma__writecombine() to dma__wc()

2016-03-09T13:57:51Z

Rename dma_*_writecombine() to dma_*_wc(), so that the naming is coherent across the various write-combining APIs. Keep the old names for compatibility for a while, these can be removed at a later time. A guard is left to enable backporting of the rename, and later remove of the old mapping defines seemlessly. Build tested successfully with allmodconfig. The following Coccinelle SmPL patch was used for this simple transformation: @ rename_dma_alloc_writecombine @ expression dev, size, dma_addr, gfp; @@ -dma_alloc_writecombine(dev, size, dma_addr, gfp) +dma_alloc_wc(dev, size, dma_addr, gfp) @ rename_dma_free_writecombine @ expression dev, size, cpu_addr, dma_addr; @@ -dma_free_writecombine(dev, size, cpu_addr, dma_addr) +dma_free_wc(dev, size, cpu_addr, dma_addr) @ rename_dma_mmap_writecombine @ expression dev, vma, cpu_addr, dma_addr, size; @@ -dma_mmap_writecombine(dev, vma, cpu_addr, dma_addr, size) +dma_mmap_wc(dev, vma, cpu_addr, dma_addr, size) We also keep the old names as compatibility helpers, and guard against their definition to make backporting easier. Generated-by: Coccinelle SmPL Suggested-by: Ingo Molnar Signed-off-by: Luis R. Rodriguez Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: airlied@linux.ie Cc: akpm@linux-foundation.org Cc: benh@kernel.crashing.org Cc: bhelgaas@google.com Cc: bp@suse.de Cc: dan.j.williams@intel.com Cc: daniel.vetter@ffwll.ch Cc: dhowells@redhat.com Cc: julia.lawall@lip6.fr Cc: konrad.wilk@oracle.com Cc: linux-fbdev@vger.kernel.org Cc: linux-pci@vger.kernel.org Cc: luto@amacapital.net Cc: mst@redhat.com Cc: tomi.valkeinen@ti.com Cc: toshi.kani@hp.com Cc: vinod.koul@intel.com Cc: xen-devel@lists.xensource.com Link: http://lkml.kernel.org/r/1453516462-4844-1-git-send-email-mcgrof@do-not-panic.com Signed-off-by: Ingo Molnar

video: fbdev: gbefb: use arch_phys_wc_add() and devm_ioremap_wc()

2015-06-03T09:41:46Z

Convert the driver from using the x86 specific MTRR code to the architecture agnostic arch_phys_wc_add(). arch_phys_wc_add() will avoid MTRR if write-combining is available, in order to take advantage of that also ensure the ioremap'd area is requested as write-combining. There are a few motivations for this: a) Take advantage of PAT when available b) Help bury MTRR code away, MTRR is architecture specific and on x86 its replaced by PAT c) Help with the goal of eventually using _PAGE_CACHE_UC over _PAGE_CACHE_UC_MINUS on x86 on ioremap_nocache() (see commit de33c442e titled "x86 PAT: fix performance drop for glx, use UC minus for ioremap(), ioremap_nocache() and pci_mmap_page_range()") The conversion done is expressed by the following Coccinelle SmPL patch, it additionally required manual intervention to address all the #ifdery and removal of redundant things which arch_phys_wc_add() already addresses such as verbose message about when MTRR fails and doing nothing when we didn't get an MTRR. @ mtrr_found @ expression index, base, size; @@ -index = mtrr_add(base, size, MTRR_TYPE_WRCOMB, 1); +index = arch_phys_wc_add(base, size); @ mtrr_rm depends on mtrr_found @ expression mtrr_found.index, mtrr_found.base, mtrr_found.size; @@ -mtrr_del(index, base, size); +arch_phys_wc_del(index); @ mtrr_rm_zero_arg depends on mtrr_found @ expression mtrr_found.index; @@ -mtrr_del(index, 0, 0); +arch_phys_wc_del(index); @ mtrr_rm_fb_info depends on mtrr_found @ struct fb_info *info; expression mtrr_found.index; @@ -mtrr_del(index, info->fix.smem_start, info->fix.smem_len); +arch_phys_wc_del(index); @ ioremap_replace_nocache depends on mtrr_found @ struct fb_info *info; expression base, size; @@ -info->screen_base = ioremap_nocache(base, size); +info->screen_base = ioremap_wc(base, size); @ ioremap_replace_default depends on mtrr_found @ struct fb_info *info; expression base, size; @@ -info->screen_base = ioremap(base, size); +info->screen_base = ioremap_wc(base, size); Generated-by: Coccinelle SmPL Cc: Thomas Gleixner Cc: Juergen Gross Cc: Jingoo Han Cc: Daniel Vetter Cc: Masanari Iida Cc: Suresh Siddha Cc: Ingo Molnar Cc: Andy Lutomirski Cc: Dave Airlie Cc: Antonino Daplas Cc: Jean-Christophe Plagniol-Villard Cc: Tomi Valkeinen Cc: linux-fbdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Luis R. Rodriguez Signed-off-by: Tomi Valkeinen

video: fbdev: gbefb: add missing mtrr_del() calls

2015-05-29T05:45:28Z

This driver never removed the MTRRs. Fix that. Cc: Thomas Gleixner Cc: Juergen Gross Cc: Jingoo Han Cc: Daniel Vetter Cc: Masanari Iida Cc: Suresh Siddha Cc: Ingo Molnar Cc: Andy Lutomirski Cc: Dave Airlie Cc: Antonino Daplas Cc: Jean-Christophe Plagniol-Villard Cc: Tomi Valkeinen Cc: linux-fbdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Luis R. Rodriguez Signed-off-by: Tomi Valkeinen