[Intel-gfx] [PATCH] drm/i915: Kconfig option to disable the legacy fbdev support
Lee, Chon Ming
chon.ming.lee at intel.com
Fri Oct 11 07:53:36 CEST 2013
On 10/09 09:18, Daniel Vetter wrote:
> Boots Just Fine (tm)!
>
> The only glitch seems to be that at least on Fedora the boot splash
> gets confused and doesn't display much at all.
>
> And since there's no ugly console flickering anymore in between, the
> flicker while switching between X servers (VT support is still enabled)
> is even more jarring.
>
> Also, I'm unsure whether we don't need to somehow kick out vgacon, now
> that nothing else gets in the way. But stuff seems to work, so I
> don't care. Also everything still works as well with VGA_CONSOLE=n
>
> Also the #ifdef mess needs a bit of a cleanup, follow-up patches will
> do just that.
>
> To keep the Kconfig tidy, extract all the i915 options into its own
> file.
>
> v2:
> - Rebase on top of the preliminary hw support option and the
> intel_drv.h cleanup.
> - Shut up warnings in i915_debugfs.c
>
> v3: Use the right CONFIG variable, spotted by Chon Ming.
>
> Cc: Lee, Chon Ming <chon.ming.lee at intel.com>
> Cc: David Herrmann <dh.herrmann at gmail.com>
> Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
> ---
Look good to me this series.
Reviewed-by: Chon Ming Lee <chon.ming.lee at intel.com>
> drivers/gpu/drm/Kconfig | 60 +-------------------------------
> drivers/gpu/drm/i915/Kconfig | 67 ++++++++++++++++++++++++++++++++++++
> drivers/gpu/drm/i915/Makefile | 3 +-
> drivers/gpu/drm/i915/i915_debugfs.c | 9 ++---
> drivers/gpu/drm/i915/i915_dma.c | 6 ++++
> drivers/gpu/drm/i915/i915_drv.h | 2 ++
> drivers/gpu/drm/i915/intel_display.c | 10 ++++++
> drivers/gpu/drm/i915/intel_drv.h | 36 +++++++++++++++----
> 8 files changed, 122 insertions(+), 71 deletions(-)
> create mode 100644 drivers/gpu/drm/i915/Kconfig
>
> diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
> index 3104b6d..b4e4fc0 100644
> --- a/drivers/gpu/drm/Kconfig
> +++ b/drivers/gpu/drm/Kconfig
> @@ -128,65 +128,7 @@ config DRM_I810
> selected, the module will be called i810. AGP support is required
> for this driver to work.
>
> -config DRM_I915
> - tristate "Intel 8xx/9xx/G3x/G4x/HD Graphics"
> - depends on DRM
> - depends on AGP
> - depends on AGP_INTEL
> - # we need shmfs for the swappable backing store, and in particular
> - # the shmem_readpage() which depends upon tmpfs
> - select SHMEM
> - select TMPFS
> - select DRM_KMS_HELPER
> - select DRM_KMS_FB_HELPER
> - select FB_CFB_FILLRECT
> - select FB_CFB_COPYAREA
> - select FB_CFB_IMAGEBLIT
> - # i915 depends on ACPI_VIDEO when ACPI is enabled
> - # but for select to work, need to select ACPI_VIDEO's dependencies, ick
> - select BACKLIGHT_LCD_SUPPORT if ACPI
> - select BACKLIGHT_CLASS_DEVICE if ACPI
> - select VIDEO_OUTPUT_CONTROL if ACPI
> - select INPUT if ACPI
> - select THERMAL if ACPI
> - select ACPI_VIDEO if ACPI
> - select ACPI_BUTTON if ACPI
> - help
> - Choose this option if you have a system that has "Intel Graphics
> - Media Accelerator" or "HD Graphics" integrated graphics,
> - including 830M, 845G, 852GM, 855GM, 865G, 915G, 945G, 965G,
> - G35, G41, G43, G45 chipsets and Celeron, Pentium, Core i3,
> - Core i5, Core i7 as well as Atom CPUs with integrated graphics.
> - If M is selected, the module will be called i915. AGP support
> - is required for this driver to work. This driver is used by
> - the Intel driver in X.org 6.8 and XFree86 4.4 and above. It
> - replaces the older i830 module that supported a subset of the
> - hardware in older X.org releases.
> -
> - Note that the older i810/i815 chipsets require the use of the
> - i810 driver instead, and the Atom z5xx series has an entirely
> - different implementation.
> -
> -config DRM_I915_KMS
> - bool "Enable modesetting on intel by default"
> - depends on DRM_I915
> - help
> - Choose this option if you want kernel modesetting enabled by default,
> - and you have a new enough userspace to support this. Running old
> - userspaces with this enabled will cause pain. Note that this causes
> - the driver to bind to PCI devices, which precludes loading things
> - like intelfb.
> -
> -config DRM_I915_PRELIMINARY_HW_SUPPORT
> - bool "Enable preliminary support for prerelease Intel hardware by default"
> - depends on DRM_I915
> - help
> - Choose this option if you have prerelease Intel hardware and want the
> - i915 driver to support it by default. You can enable such support at
> - runtime with the module option i915.preliminary_hw_support=1; this
> - option changes the default for that module option.
> -
> - If in doubt, say "N".
> +source "drivers/gpu/drm/i915/Kconfig"
>
> config DRM_MGA
> tristate "Matrox g200/g400"
> diff --git a/drivers/gpu/drm/i915/Kconfig b/drivers/gpu/drm/i915/Kconfig
> new file mode 100644
> index 0000000..6199d0b
> --- /dev/null
> +++ b/drivers/gpu/drm/i915/Kconfig
> @@ -0,0 +1,67 @@
> +config DRM_I915
> + tristate "Intel 8xx/9xx/G3x/G4x/HD Graphics"
> + depends on DRM
> + depends on AGP
> + depends on AGP_INTEL
> + # we need shmfs for the swappable backing store, and in particular
> + # the shmem_readpage() which depends upon tmpfs
> + select SHMEM
> + select TMPFS
> + select DRM_KMS_HELPER
> + # i915 depends on ACPI_VIDEO when ACPI is enabled
> + # but for select to work, need to select ACPI_VIDEO's dependencies, ick
> + select BACKLIGHT_LCD_SUPPORT if ACPI
> + select BACKLIGHT_CLASS_DEVICE if ACPI
> + select VIDEO_OUTPUT_CONTROL if ACPI
> + select INPUT if ACPI
> + select ACPI_VIDEO if ACPI
> + select ACPI_BUTTON if ACPI
> + help
> + Choose this option if you have a system that has "Intel Graphics
> + Media Accelerator" or "HD Graphics" integrated graphics,
> + including 830M, 845G, 852GM, 855GM, 865G, 915G, 945G, 965G,
> + G35, G41, G43, G45 chipsets and Celeron, Pentium, Core i3,
> + Core i5, Core i7 as well as Atom CPUs with integrated graphics.
> + If M is selected, the module will be called i915. AGP support
> + is required for this driver to work. This driver is used by
> + the Intel driver in X.org 6.8 and XFree86 4.4 and above. It
> + replaces the older i830 module that supported a subset of the
> + hardware in older X.org releases.
> +
> + Note that the older i810/i815 chipsets require the use of the
> + i810 driver instead, and the Atom z5xx series has an entirely
> + different implementation.
> +
> +config DRM_I915_KMS
> + bool "Enable modesetting on intel by default"
> + depends on DRM_I915
> + help
> + Choose this option if you want kernel modesetting enabled by default,
> + and you have a new enough userspace to support this. Running old
> + userspaces with this enabled will cause pain. Note that this causes
> + the driver to bind to PCI devices, which precludes loading things
> + like intelfb.
> +
> +config DRM_I915_FBDEV
> + bool "Enable legacy fbdev support for the modesettting intel driver"
> + depends on DRM_I915
> + select DRM_KMS_FB_HELPER
> + select FB_CFB_FILLRECT
> + select FB_CFB_COPYAREA
> + select FB_CFB_IMAGEBLIT
> + default y
> + help
> + Choose this option if you have a need for the legacy fbdev
> + support. Note that this support also provide the linux console
> + support on top of the intel modesetting driver.
> +
> +config DRM_I915_PRELIMINARY_HW_SUPPORT
> + bool "Enable preliminary support for prerelease Intel hardware by default"
> + depends on DRM_I915
> + help
> + Choose this option if you have prerelease Intel hardware and want the
> + i915 driver to support it by default. You can enable such support at
> + runtime with the module option i915.preliminary_hw_support=1; this
> + option changes the default for that module option.
> +
> + If in doubt, say "N".
> diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
> index 65e60d2..45e14a8 100644
> --- a/drivers/gpu/drm/i915/Makefile
> +++ b/drivers/gpu/drm/i915/Makefile
> @@ -33,7 +33,6 @@ i915-y := i915_drv.o i915_dma.o i915_irq.o \
> intel_panel.o \
> intel_pm.o \
> intel_i2c.o \
> - intel_fb.o \
> intel_tv.o \
> intel_dvo.o \
> intel_ringbuffer.o \
> @@ -54,6 +53,8 @@ i915-$(CONFIG_COMPAT) += i915_ioc32.o
>
> i915-$(CONFIG_ACPI) += intel_acpi.o
>
> +i915-$(CONFIG_DRM_I915_FBDEV) += intel_fb.o
> +
> obj-$(CONFIG_DRM_I915) += i915.o
>
> CFLAGS_i915_trace_points.o := -I$(src)
> diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
> index 5fd6a5d..79bfbd5 100644
> --- a/drivers/gpu/drm/i915/i915_debugfs.c
> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> @@ -1399,12 +1399,12 @@ static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
> {
> struct drm_info_node *node = (struct drm_info_node *) m->private;
> struct drm_device *dev = node->minor->dev;
> - drm_i915_private_t *dev_priv = dev->dev_private;
> - struct intel_fbdev *ifbdev;
> + struct intel_fbdev *ifbdev = NULL;
> struct intel_framebuffer *fb;
> - int ret;
>
> - ret = mutex_lock_interruptible(&dev->mode_config.mutex);
> +#ifdef CONFIG_DRM_I915_FBDEV
> + struct drm_i915_private *dev_priv = dev->dev_private;
> + int ret = mutex_lock_interruptible(&dev->mode_config.mutex);
> if (ret)
> return ret;
>
> @@ -1420,6 +1420,7 @@ static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
> describe_obj(m, fb->obj);
> seq_putc(m, '\n');
> mutex_unlock(&dev->mode_config.mutex);
> +#endif
>
> mutex_lock(&dev->mode_config.fb_lock);
> list_for_each_entry(fb, &dev->mode_config.fb_list, base.head) {
> diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
> index f221631..90f1fb6 100644
> --- a/drivers/gpu/drm/i915/i915_dma.c
> +++ b/drivers/gpu/drm/i915/i915_dma.c
> @@ -1416,6 +1416,7 @@ void i915_master_destroy(struct drm_device *dev, struct drm_master *master)
> master->driver_priv = NULL;
> }
>
> +#ifdef CONFIG_DRM_I915_FBDEV
> static void i915_kick_out_firmware_fb(struct drm_i915_private *dev_priv)
> {
> struct apertures_struct *ap;
> @@ -1436,6 +1437,11 @@ static void i915_kick_out_firmware_fb(struct drm_i915_private *dev_priv)
>
> kfree(ap);
> }
> +#else
> +static void i915_kick_out_firmware_fb(struct drm_i915_private *dev_priv)
> +{
> +}
> +#endif
>
> static void i915_dump_device_info(struct drm_i915_private *dev_priv)
> {
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index ed8653f..99f621d 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -1354,8 +1354,10 @@ typedef struct drm_i915_private {
>
> struct drm_i915_gem_object *vlv_pctx;
>
> +#ifdef CONFIG_DRM_I915_FBDEV
> /* list of fbdev register on this device */
> struct intel_fbdev *fbdev;
> +#endif
>
> /*
> * The console may be contended at resume, but we don't
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index ded0d45..43e4e75 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -7318,6 +7318,7 @@ static struct drm_framebuffer *
> mode_fits_in_fbdev(struct drm_device *dev,
> struct drm_display_mode *mode)
> {
> +#ifdef CONFIG_DRM_I915_FBDEV
> struct drm_i915_private *dev_priv = dev->dev_private;
> struct drm_i915_gem_object *obj;
> struct drm_framebuffer *fb;
> @@ -7338,6 +7339,9 @@ mode_fits_in_fbdev(struct drm_device *dev,
> return NULL;
>
> return fb;
> +#else
> + return NULL;
> +#endif
> }
>
> bool intel_get_load_detect_pipe(struct drm_connector *connector,
> @@ -10084,6 +10088,12 @@ intel_user_framebuffer_create(struct drm_device *dev,
> return intel_framebuffer_create(dev, mode_cmd, obj);
> }
>
> +#ifndef CONFIG_DRM_I915_FBDEV
> +static inline void intel_fb_output_poll_changed(struct drm_device *dev)
> +{
> +}
> +#endif
> +
> static const struct drm_mode_config_funcs intel_mode_funcs = {
> .fb_create = intel_user_framebuffer_create,
> .output_poll_changed = intel_fb_output_poll_changed,
> diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
> index adfb57c..181d10b 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -716,14 +716,36 @@ bool intel_dsi_init(struct drm_device *dev);
> void intel_dvo_init(struct drm_device *dev);
>
>
> -/* intel_fb.c */
> -int intel_fbdev_init(struct drm_device *dev);
> -void intel_fbdev_initial_config(struct drm_device *dev);
> -void intel_fbdev_fini(struct drm_device *dev);
> -void intel_fbdev_set_suspend(struct drm_device *dev, int state);
> -void intel_fb_output_poll_changed(struct drm_device *dev);
> -void intel_fb_restore_mode(struct drm_device *dev);
> +/* legacy fbdev emulation in intel_fb.c */
> +#ifdef CONFIG_DRM_I915_FBDEV
> +extern int intel_fbdev_init(struct drm_device *dev);
> +extern void intel_fbdev_initial_config(struct drm_device *dev);
> +extern void intel_fbdev_fini(struct drm_device *dev);
> +extern void intel_fbdev_set_suspend(struct drm_device *dev, int state);
> +extern void intel_fb_output_poll_changed(struct drm_device *dev);
> +extern void intel_fb_restore_mode(struct drm_device *dev);
> +#else
> +static inline int intel_fbdev_init(struct drm_device *dev)
> +{
> + return 0;
> +}
>
> +static inline void intel_fbdev_initial_config(struct drm_device *dev)
> +{
> +}
> +
> +static inline void intel_fbdev_fini(struct drm_device *dev)
> +{
> +}
> +
> +static inline void intel_fbdev_set_suspend(struct drm_device *dev, int state)
> +{
> +}
> +
> +static inline void intel_fb_restore_mode(struct drm_device *dev)
> +{
> +}
> +#endif
>
> /* intel_hdmi.c */
> void intel_hdmi_init(struct drm_device *dev, int hdmi_reg, enum port port);
> --
> 1.8.1.4
>
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