From: Daniel Vetter <daniel@ffwll.ch>
To: Archit Taneja <architt@codeaurora.org>
Cc: dri-devel@lists.freedesktop.org, daniel@ffwll.ch,
linux-arm-msm@vger.kernel.org, airlied@linux.ie
Subject: Re: [PATCH 03/25] drm/fb_helper: Create wrappers for fb_sys_read/write funcs
Date: Mon, 13 Jul 2015 09:39:45 +0200 [thread overview]
Message-ID: <20150713073945.GO3736@phenom.ffwll.local> (raw)
In-Reply-To: <1436769501-4105-4-git-send-email-architt@codeaurora.org>
On Mon, Jul 13, 2015 at 12:07:59PM +0530, Archit Taneja wrote:
> Some drm drivers populate their fb_ops with fb_sys_read/write fb sysfs
> ops.
>
> Create a drm_fb_helper function that wraps around these calls.
>
> This is part of an effort to prevent drm drivers from calling fbdev
> functions directly, in order to make fbdev emulation a top level drm
> option.
>
> Signed-off-by: Archit Taneja <architt@codeaurora.org>
> ---
> drivers/gpu/drm/Kconfig | 1 +
> drivers/gpu/drm/drm_fb_helper.c | 20 ++++++++++++++++++++
> include/drm/drm_fb_helper.h | 5 +++++
> 3 files changed, 26 insertions(+)
>
> diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
> index a66ac44..b284cdc 100644
> --- a/drivers/gpu/drm/Kconfig
> +++ b/drivers/gpu/drm/Kconfig
> @@ -37,6 +37,7 @@ config DRM_KMS_FB_HELPER
> select FB
> select FRAMEBUFFER_CONSOLE if !EXPERT
> select FRAMEBUFFER_CONSOLE_DETECT_PRIMARY if FRAMEBUFFER_CONSOLE
> + select FB_SYS_FOPS
> help
> FBDEV helpers for KMS drivers.
>
> diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
> index 742377d..795547e 100644
> --- a/drivers/gpu/drm/drm_fb_helper.c
> +++ b/drivers/gpu/drm/drm_fb_helper.c
> @@ -744,6 +744,26 @@ void drm_fb_helper_unlink_fbi(struct drm_fb_helper *fb_helper)
> }
> EXPORT_SYMBOL(drm_fb_helper_unlink_fbi);
>
> +ssize_t drm_fb_helper_sys_read(struct fb_info *info, char __user *buf,
> + size_t count, loff_t *ppos)
Another one: Checkpatch complains about alignment here. I agree.
-Danel
> +{
> + if (info)
> + return fb_sys_read(info, buf, count, ppos);
> +
> + return -ENODEV;
> +}
> +EXPORT_SYMBOL(drm_fb_helper_sys_read);
> +
> +ssize_t drm_fb_helper_sys_write(struct fb_info *info, const char __user *buf,
> + size_t count, loff_t *ppos)
> +{
> + if (info)
> + return fb_sys_write(info, buf, count, ppos);
> +
> + return -ENODEV;
> +}
> +EXPORT_SYMBOL(drm_fb_helper_sys_write);
> +
> static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green,
> u16 blue, u16 regno, struct fb_info *info)
> {
> diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h
> index 4c90837..f74e59e 100644
> --- a/include/drm/drm_fb_helper.h
> +++ b/include/drm/drm_fb_helper.h
> @@ -147,6 +147,11 @@ void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,
>
> void drm_fb_helper_unlink_fbi(struct drm_fb_helper *fb_helper);
>
> +ssize_t drm_fb_helper_sys_read(struct fb_info *info, char __user *buf,
> + size_t count, loff_t *ppos);
> +ssize_t drm_fb_helper_sys_write(struct fb_info *info, const char __user *buf,
> + size_t count, loff_t *ppos);
> +
> int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info);
>
> int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper);
> --
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> hosted by The Linux Foundation
>
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
next prev parent reply other threads:[~2015-07-13 7:39 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-13 6:37 [PATCH 00/25] drm: fb emulation: Step 1: Create new drm_fb_helper wrapper funcs Archit Taneja
2015-07-13 6:37 ` [PATCH 01/25] drm/fb_helper: Add drm_fb_helper functions to manage fb_info creation Archit Taneja
2015-07-13 6:37 ` [PATCH 02/25] drm/fb_helper: Create a wrapper for unlink_framebuffer Archit Taneja
2015-07-13 7:30 ` Daniel Vetter
2015-07-13 6:37 ` [PATCH 03/25] drm/fb_helper: Create wrappers for fb_sys_read/write funcs Archit Taneja
2015-07-13 7:31 ` Daniel Vetter
2015-07-13 9:59 ` Archit Taneja
2015-07-13 7:39 ` Daniel Vetter [this message]
2015-07-13 6:38 ` [PATCH 04/25] drm/fb_helper: Create wrappers for blit, copyarea and fillrect funcs Archit Taneja
2015-07-13 7:40 ` Daniel Vetter
2015-07-13 6:38 ` [PATCH 05/25] drm/fb_helper: Create a wrapper for fb_set_suspend Archit Taneja
2015-07-13 6:38 ` [PATCH 06/25] drm/fb_helper: Create a wrapper for remove_conflicting_framebuffers Archit Taneja
2015-07-13 6:38 ` [PATCH 07/25] drm/cirrus: Use new drm_fb_helper functions Archit Taneja
2015-07-13 6:38 ` [PATCH 08/25] drm/rockchip: " Archit Taneja
2015-07-13 6:38 ` [PATCH 09/25] drm/armada: " Archit Taneja
2015-07-13 6:38 ` [PATCH 10/25] drm/ast: " Archit Taneja
2015-07-13 6:38 ` [PATCH 11/25] drm/omap: " Archit Taneja
2015-07-13 6:38 ` [PATCH 12/25] drm/tegra: " Archit Taneja
2015-07-14 8:50 ` Thierry Reding
2015-07-14 9:11 ` Archit Taneja
2015-07-13 6:38 ` [PATCH 13/25] drm/msm: " Archit Taneja
2015-07-13 6:38 ` [PATCH 14/25] drm/exynos: " Archit Taneja
2015-08-11 9:04 ` Inki Dae
2015-08-11 9:11 ` Inki Dae
2015-07-13 6:38 ` [PATCH 15/25] drm/gma500: " Archit Taneja
2015-07-13 6:38 ` [PATCH 16/25] drm/mgag200: " Archit Taneja
2015-07-13 6:38 ` [PATCH 17/25] drm/radeon: " Archit Taneja
2015-07-13 6:38 ` [PATCH 18/25] drm/qxl: " Archit Taneja
2015-07-13 6:38 ` [PATCH 19/25] drm/i915: " Archit Taneja
2015-07-13 6:38 ` [PATCH 20/25] drm/nouveau: " Archit Taneja
2015-07-13 6:38 ` [PATCH 21/25] drm/udl: " Archit Taneja
2015-07-13 6:38 ` [PATCH 22/25] drm/boschs: " Archit Taneja
2015-07-13 6:38 ` [PATCH 23/25] drm/amdgpu: " Archit Taneja
2015-07-13 6:38 ` [PATCH 24/25] drm/virtio: " Archit Taneja
2015-07-13 6:38 ` [PATCH 25/25] drm/fb_cma_helper: " Archit Taneja
2015-07-13 8:07 ` [PATCH 00/25] drm: fb emulation: Step 1: Create new drm_fb_helper wrapper funcs Daniel Vetter
2015-07-13 10:29 ` Archit Taneja
2015-07-13 14:11 ` Daniel Vetter
2015-07-13 15:25 ` Alex Deucher
2015-07-22 6:59 ` [PATCH v2 " Archit Taneja
2015-07-22 6:59 ` [PATCH v2 01/25] drm/fb_helper: Add drm_fb_helper functions to manage fb_info creation Archit Taneja
2015-07-22 6:59 ` [PATCH v2 02/25] drm/fb_helper: Create a wrapper for unlink_framebuffer Archit Taneja
2015-07-22 6:59 ` [PATCH v2 03/25] drm/fb_helper: Create wrappers for fb_sys_read/write funcs Archit Taneja
2015-07-22 6:59 ` [PATCH v2 04/25] drm/fb_helper: Create wrappers for blit, copyarea and fillrect funcs Archit Taneja
2015-07-22 6:59 ` [PATCH v2 05/25] drm/fb_helper: Create a wrapper for fb_set_suspend Archit Taneja
2015-07-22 6:59 ` [PATCH v2 06/25] drm/fb_helper: Create a wrapper for remove_conflicting_framebuffers Archit Taneja
2015-07-22 6:59 ` [PATCH v2 07/25] drm/cirrus: Use new drm_fb_helper functions Archit Taneja
2015-07-22 6:59 ` [PATCH v2 08/25] drm/rockchip: " Archit Taneja
2015-07-22 6:59 ` [PATCH v2 09/25] drm/armada: " Archit Taneja
2015-07-22 6:59 ` [PATCH v2 10/25] drm/ast: " Archit Taneja
2015-07-22 6:59 ` [PATCH v2 11/25] drm/omap: " Archit Taneja
2015-07-22 6:59 ` [PATCH v2 12/25] drm/tegra: " Archit Taneja
2015-07-22 6:59 ` [PATCH v2 13/25] drm/msm: " Archit Taneja
2015-07-22 6:59 ` [PATCH v2 14/25] drm/exynos: " Archit Taneja
2015-08-11 12:27 ` Inki Dae
2015-07-22 6:59 ` [PATCH v2 15/25] drm/gma500: " Archit Taneja
2015-07-22 6:59 ` [PATCH v2 16/25] drm/mgag200: " Archit Taneja
2015-07-22 6:59 ` [PATCH v2 17/25] drm/radeon: " Archit Taneja
2015-07-22 6:59 ` [PATCH v2 18/25] drm/qxl: " Archit Taneja
2015-07-22 6:59 ` [PATCH v2 19/25] drm/i915: " Archit Taneja
2015-07-22 6:59 ` [PATCH v2 20/25] drm/nouveau: " Archit Taneja
2015-07-22 6:59 ` [PATCH v2 21/25] drm/udl: " Archit Taneja
2015-07-22 6:59 ` [PATCH v2 22/25] drm/bochs: " Archit Taneja
2015-07-22 6:59 ` [PATCH v2 23/25] drm/amdgpu: " Archit Taneja
2015-07-22 7:00 ` [PATCH v2 24/25] drm/virtio: " Archit Taneja
2015-07-22 7:00 ` [PATCH v2 25/25] drm/fb_cma_helper: " Archit Taneja
2015-07-22 7:41 ` [PATCH v2 00/25] drm: fb emulation: Step 1: Create new drm_fb_helper wrapper funcs Daniel Vetter
2015-07-22 8:34 ` Archit Taneja
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