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Subject[PATCH 2/3] drm/fb-helper: Rename preferred_bpp drm_fbdev_generic_setup() parameter
Date
By default the bits per pixel for the emulated framebuffer device is set
to dev->mode_config.preferred_depth, but some devices need another value.

Since this second parameter is only used by a few drivers, and to allow
drivers to use it for passing other configurations when registering the
fbdev, rename @preferred_bpp to @options and make it a multi-field param.

The DRM_FB_SET_OPTION() and DRM_FB_GET_OPTION() macros are provided for
drivers to set and get an option respectively. For now, only DRM_FB_BPP
option exists but other options would be added later.

Suggested-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
---

drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 6 ++++--
drivers/gpu/drm/arm/hdlcd_drv.c | 2 +-
drivers/gpu/drm/arm/malidp_drv.c | 2 +-
drivers/gpu/drm/aspeed/aspeed_gfx_drv.c | 2 +-
drivers/gpu/drm/ast/ast_drv.c | 2 +-
drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c | 2 +-
drivers/gpu/drm/drm_drv.c | 2 +-
drivers/gpu/drm/drm_fb_helper.c | 16 ++++++++++++----
drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c | 2 +-
drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c | 2 +-
drivers/gpu/drm/imx/dcss/dcss-kms.c | 2 +-
drivers/gpu/drm/imx/imx-drm-core.c | 2 +-
drivers/gpu/drm/ingenic/ingenic-drm-drv.c | 2 +-
drivers/gpu/drm/mcde/mcde_drv.c | 2 +-
drivers/gpu/drm/mediatek/mtk_drm_drv.c | 2 +-
drivers/gpu/drm/meson/meson_drv.c | 2 +-
drivers/gpu/drm/mxsfb/mxsfb_drv.c | 2 +-
drivers/gpu/drm/pl111/pl111_drv.c | 2 +-
drivers/gpu/drm/qxl/qxl_drv.c | 2 +-
drivers/gpu/drm/rcar-du/rcar_du_drv.c | 2 +-
drivers/gpu/drm/sti/sti_drv.c | 2 +-
drivers/gpu/drm/stm/drv.c | 2 +-
drivers/gpu/drm/sun4i/sun4i_drv.c | 2 +-
drivers/gpu/drm/tidss/tidss_drv.c | 2 +-
drivers/gpu/drm/tilcdc/tilcdc_drv.c | 2 +-
drivers/gpu/drm/tiny/arcpgu.c | 2 +-
drivers/gpu/drm/tiny/bochs.c | 2 +-
drivers/gpu/drm/tve200/tve200_drv.c | 2 +-
drivers/gpu/drm/vboxvideo/vbox_drv.c | 2 +-
drivers/gpu/drm/vc4/vc4_drv.c | 2 +-
drivers/gpu/drm/virtio/virtgpu_drv.c | 2 +-
drivers/gpu/drm/xlnx/zynqmp_dpsub.c | 2 +-
include/drm/drm_fb_helper.h | 12 ++++++++++++
33 files changed, 58 insertions(+), 36 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index b03663f42cc9..f5fae3838cdc 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -2118,9 +2118,11 @@ static int amdgpu_pci_probe(struct pci_dev *pdev,
!list_empty(&adev_to_drm(adev)->mode_config.connector_list)) {
/* select 8 bpp console on low vram cards */
if (adev->gmc.real_vram_size <= (32*1024*1024))
- drm_fbdev_generic_setup(adev_to_drm(adev), 8);
+ drm_fbdev_generic_setup(adev_to_drm(adev),
+ DRM_FB_SET_OPTION(DRM_FB_BPP, 8));
else
- drm_fbdev_generic_setup(adev_to_drm(adev), 32);
+ drm_fbdev_generic_setup(adev_to_drm(adev),
+ DRM_FB_SET_OPTION(DRM_FB_BPP, 32));
}

ret = amdgpu_debugfs_init(adev);
diff --git a/drivers/gpu/drm/arm/hdlcd_drv.c b/drivers/gpu/drm/arm/hdlcd_drv.c
index e89ae0ec60eb..636b0e989398 100644
--- a/drivers/gpu/drm/arm/hdlcd_drv.c
+++ b/drivers/gpu/drm/arm/hdlcd_drv.c
@@ -321,7 +321,7 @@ static int hdlcd_drm_bind(struct device *dev)
if (ret)
goto err_register;

- drm_fbdev_generic_setup(drm, 32);
+ drm_fbdev_generic_setup(drm, DRM_FB_SET_OPTION(DRM_FB_BPP, 32));

return 0;

diff --git a/drivers/gpu/drm/arm/malidp_drv.c b/drivers/gpu/drm/arm/malidp_drv.c
index d5aef21426cf..8f7c4f3136d5 100644
--- a/drivers/gpu/drm/arm/malidp_drv.c
+++ b/drivers/gpu/drm/arm/malidp_drv.c
@@ -863,7 +863,7 @@ static int malidp_bind(struct device *dev)
if (ret)
goto register_fail;

- drm_fbdev_generic_setup(drm, 32);
+ drm_fbdev_generic_setup(drm, DRM_FB_SET_OPTION(DRM_FB_BPP, 32));

return 0;

diff --git a/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c b/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c
index 7780b72de9e8..c16837fd1f8d 100644
--- a/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c
+++ b/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c
@@ -343,7 +343,7 @@ static int aspeed_gfx_probe(struct platform_device *pdev)
if (ret)
goto err_unload;

- drm_fbdev_generic_setup(&priv->drm, 32);
+ drm_fbdev_generic_setup(&priv->drm, DRM_FB_SET_OPTION(DRM_FB_BPP, 32));
return 0;

err_unload:
diff --git a/drivers/gpu/drm/ast/ast_drv.c b/drivers/gpu/drm/ast/ast_drv.c
index 7465c4f0156a..813e9af00983 100644
--- a/drivers/gpu/drm/ast/ast_drv.c
+++ b/drivers/gpu/drm/ast/ast_drv.c
@@ -126,7 +126,7 @@ static int ast_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
if (ret)
return ret;

- drm_fbdev_generic_setup(dev, 32);
+ drm_fbdev_generic_setup(dev, DRM_FB_SET_OPTION(DRM_FB_BPP, 32));

return 0;
}
diff --git a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
index 651e3c109360..e18dcd16ff8a 100644
--- a/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
+++ b/drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
@@ -760,7 +760,7 @@ static int atmel_hlcdc_dc_drm_probe(struct platform_device *pdev)
if (ret)
goto err_unload;

- drm_fbdev_generic_setup(ddev, 24);
+ drm_fbdev_generic_setup(ddev, DRM_FB_SET_OPTION(DRM_FB_BPP, 24));

return 0;

diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 8214a0b1ab7f..6695937945a5 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -324,7 +324,7 @@ void drm_minor_release(struct drm_minor *minor)
* if (ret)
* return ret;
*
- * drm_fbdev_generic_setup(drm, 32);
+ * drm_fbdev_generic_setup(drm, DRM_FB_SET_OPTION(DRM_FB_BPP, 32));
*
* return 0;
* }
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index d265a73313c9..f626947bb9b9 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -2501,8 +2501,16 @@ static const struct drm_client_funcs drm_fbdev_client_funcs = {
/**
* drm_fbdev_generic_setup() - Setup generic fbdev emulation
* @dev: DRM device
- * @preferred_bpp: Preferred bits per pixel for the device.
- * @dev->mode_config.preferred_depth is used if this is zero.
+ * @options: options for the registered framebuffer.
+ *
+ * The @options parameter is a multi-field parameter that can contain
+ * different options for the emulated framebuffer device registered.
+ *
+ * The options must be set using DRM_FB_SET_OPTION() and obtained using
+ * DRM_FB_GET_OPTION(). The options field are the following:
+ *
+ * * DRM_FB_BPP: bits per pixel for the device. If the field is not set,
+ * @dev->mode_config.preferred_depth is used instead.
*
* This function sets up generic fbdev emulation for drivers that supports
* dumb buffers with a virtual address and that can be mmap'ed.
@@ -2525,10 +2533,10 @@ static const struct drm_client_funcs drm_fbdev_client_funcs = {
*
* The fbdev is destroyed by drm_dev_unregister().
*/
-void drm_fbdev_generic_setup(struct drm_device *dev,
- unsigned int preferred_bpp)
+void drm_fbdev_generic_setup(struct drm_device *dev, unsigned int options)
{
struct drm_fb_helper *fb_helper;
+ unsigned int preferred_bpp = DRM_FB_GET_OPTION(DRM_FB_BPP, options);
int ret;

drm_WARN(dev, !dev->registered, "Device has not been registered.\n");
diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
index 7a503bf08d0f..7bd8129388f2 100644
--- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
+++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
@@ -334,7 +334,7 @@ static int fsl_dcu_drm_probe(struct platform_device *pdev)
if (ret < 0)
goto put;

- drm_fbdev_generic_setup(drm, legacyfb_depth);
+ drm_fbdev_generic_setup(drm, DRM_FB_SET_OPTION(DRM_FB_BPP, legacyfb_depth));

return 0;

diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
index 2af51df6dca7..90aa59b77d31 100644
--- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
+++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
@@ -237,7 +237,7 @@ static int kirin_drm_bind(struct device *dev)
if (ret)
goto err_kms_cleanup;

- drm_fbdev_generic_setup(drm_dev, 32);
+ drm_fbdev_generic_setup(drm_dev, DRM_FB_SET_OPTION(DRM_FB_BPP, 32));

return 0;

diff --git a/drivers/gpu/drm/imx/dcss/dcss-kms.c b/drivers/gpu/drm/imx/dcss/dcss-kms.c
index 9b84df34a6a1..a4736ae85881 100644
--- a/drivers/gpu/drm/imx/dcss/dcss-kms.c
+++ b/drivers/gpu/drm/imx/dcss/dcss-kms.c
@@ -148,7 +148,7 @@ struct dcss_kms_dev *dcss_kms_attach(struct dcss_dev *dcss)
if (ret)
goto cleanup_crtc;

- drm_fbdev_generic_setup(drm, 32);
+ drm_fbdev_generic_setup(drm, DRM_FB_SET_OPTION(DRM_FB_BPP, 32));

return kms;

diff --git a/drivers/gpu/drm/imx/imx-drm-core.c b/drivers/gpu/drm/imx/imx-drm-core.c
index a57812ec36b1..4151f9b1b645 100644
--- a/drivers/gpu/drm/imx/imx-drm-core.c
+++ b/drivers/gpu/drm/imx/imx-drm-core.c
@@ -251,7 +251,7 @@ static int imx_drm_bind(struct device *dev)
if (ret)
goto err_poll_fini;

- drm_fbdev_generic_setup(drm, legacyfb_depth);
+ drm_fbdev_generic_setup(drm, DRM_FB_SET_OPTION(DRM_FB_BPP, legacyfb_depth));

return 0;

diff --git a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
index 8eb0ad501a7b..9726c901677c 100644
--- a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
+++ b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
@@ -1388,7 +1388,7 @@ static int ingenic_drm_bind(struct device *dev, bool has_components)
goto err_clk_notifier_unregister;
}

- drm_fbdev_generic_setup(drm, 32);
+ drm_fbdev_generic_setup(drm, DRM_FB_SET_OPTION(DRM_FB_BPP, 32));

return 0;

diff --git a/drivers/gpu/drm/mcde/mcde_drv.c b/drivers/gpu/drm/mcde/mcde_drv.c
index e601baa87e55..1382a818c66b 100644
--- a/drivers/gpu/drm/mcde/mcde_drv.c
+++ b/drivers/gpu/drm/mcde/mcde_drv.c
@@ -238,7 +238,7 @@ static int mcde_drm_bind(struct device *dev)
if (ret < 0)
goto unbind;

- drm_fbdev_generic_setup(drm, 32);
+ drm_fbdev_generic_setup(drm, DRM_FB_SET_OPTION(DRM_FB_BPP, 32));

return 0;

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
index 247c6ff277ef..146f3f064e3e 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -393,7 +393,7 @@ static int mtk_drm_bind(struct device *dev)
if (ret < 0)
goto err_deinit;

- drm_fbdev_generic_setup(drm, 32);
+ drm_fbdev_generic_setup(drm, DRM_FB_SET_OPTION(DRM_FB_BPP, 32));

return 0;

diff --git a/drivers/gpu/drm/meson/meson_drv.c b/drivers/gpu/drm/meson/meson_drv.c
index 1b70938cfd2c..76463b940349 100644
--- a/drivers/gpu/drm/meson/meson_drv.c
+++ b/drivers/gpu/drm/meson/meson_drv.c
@@ -350,7 +350,7 @@ static int meson_drv_bind_master(struct device *dev, bool has_components)
if (ret)
goto uninstall_irq;

- drm_fbdev_generic_setup(drm, 32);
+ drm_fbdev_generic_setup(drm, DRM_FB_SET_OPTION(DRM_FB_BPP, 32));

return 0;

diff --git a/drivers/gpu/drm/mxsfb/mxsfb_drv.c b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
index 9d71c55a31c0..5e4c8e15eca7 100644
--- a/drivers/gpu/drm/mxsfb/mxsfb_drv.c
+++ b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
@@ -357,7 +357,7 @@ static int mxsfb_probe(struct platform_device *pdev)
if (ret)
goto err_unload;

- drm_fbdev_generic_setup(drm, 32);
+ drm_fbdev_generic_setup(drm, DRM_FB_SET_OPTION(DRM_FB_BPP, 32));

return 0;

diff --git a/drivers/gpu/drm/pl111/pl111_drv.c b/drivers/gpu/drm/pl111/pl111_drv.c
index 520301b405f1..b9d1762051c8 100644
--- a/drivers/gpu/drm/pl111/pl111_drv.c
+++ b/drivers/gpu/drm/pl111/pl111_drv.c
@@ -308,7 +308,7 @@ static int pl111_amba_probe(struct amba_device *amba_dev,
if (ret < 0)
goto dev_put;

- drm_fbdev_generic_setup(drm, priv->variant->fb_bpp);
+ drm_fbdev_generic_setup(drm, DRM_FB_SET_OPTION(DRM_FB_BPP, priv->variant->fb_bpp));

return 0;

diff --git a/drivers/gpu/drm/qxl/qxl_drv.c b/drivers/gpu/drm/qxl/qxl_drv.c
index 1cb6f0c224bb..fb7936bbdea8 100644
--- a/drivers/gpu/drm/qxl/qxl_drv.c
+++ b/drivers/gpu/drm/qxl/qxl_drv.c
@@ -122,7 +122,7 @@ qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
if (ret)
goto modeset_cleanup;

- drm_fbdev_generic_setup(&qdev->ddev, 32);
+ drm_fbdev_generic_setup(&qdev->ddev, DRM_FB_SET_OPTION(DRM_FB_BPP, 32));
return 0;

modeset_cleanup:
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
index 957ea97541d5..c2c1523c5c47 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
@@ -681,7 +681,7 @@ static int rcar_du_probe(struct platform_device *pdev)

DRM_INFO("Device %s probed\n", dev_name(&pdev->dev));

- drm_fbdev_generic_setup(&rcdu->ddev, 32);
+ drm_fbdev_generic_setup(&rcdu->ddev, DRM_FB_SET_OPTION(DRM_FB_BPP, 32));

return 0;

diff --git a/drivers/gpu/drm/sti/sti_drv.c b/drivers/gpu/drm/sti/sti_drv.c
index d858209cf8de..7fa653b28233 100644
--- a/drivers/gpu/drm/sti/sti_drv.c
+++ b/drivers/gpu/drm/sti/sti_drv.c
@@ -200,7 +200,7 @@ static int sti_bind(struct device *dev)

drm_mode_config_reset(ddev);

- drm_fbdev_generic_setup(ddev, 32);
+ drm_fbdev_generic_setup(ddev, DRM_FB_SET_OPTION(DRM_FB_BPP, 32));

return 0;

diff --git a/drivers/gpu/drm/stm/drv.c b/drivers/gpu/drm/stm/drv.c
index 0da7cce2a1a2..36301d93e566 100644
--- a/drivers/gpu/drm/stm/drv.c
+++ b/drivers/gpu/drm/stm/drv.c
@@ -203,7 +203,7 @@ static int stm_drm_platform_probe(struct platform_device *pdev)
if (ret)
goto err_put;

- drm_fbdev_generic_setup(ddev, 16);
+ drm_fbdev_generic_setup(ddev, DRM_FB_SET_OPTION(DRM_FB_BPP, 16));

return 0;

diff --git a/drivers/gpu/drm/sun4i/sun4i_drv.c b/drivers/gpu/drm/sun4i/sun4i_drv.c
index 275f7e4a03ae..2ec41525fe86 100644
--- a/drivers/gpu/drm/sun4i/sun4i_drv.c
+++ b/drivers/gpu/drm/sun4i/sun4i_drv.c
@@ -112,7 +112,7 @@ static int sun4i_drv_bind(struct device *dev)
if (ret)
goto finish_poll;

- drm_fbdev_generic_setup(drm, 32);
+ drm_fbdev_generic_setup(drm, DRM_FB_SET_OPTION(DRM_FB_BPP, 32));

return 0;

diff --git a/drivers/gpu/drm/tidss/tidss_drv.c b/drivers/gpu/drm/tidss/tidss_drv.c
index 04cfff89ee51..83bcfdc6d654 100644
--- a/drivers/gpu/drm/tidss/tidss_drv.c
+++ b/drivers/gpu/drm/tidss/tidss_drv.c
@@ -180,7 +180,7 @@ static int tidss_probe(struct platform_device *pdev)
goto err_irq_uninstall;
}

- drm_fbdev_generic_setup(ddev, 32);
+ drm_fbdev_generic_setup(ddev, DRM_FB_SET_OPTION(DRM_FB_BPP, 32));

dev_dbg(dev, "%s done\n", __func__);

diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
index eee3c447fbac..e342ea5031c8 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_drv.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
@@ -384,7 +384,7 @@ static int tilcdc_init(const struct drm_driver *ddrv, struct device *dev)
goto init_failed;
priv->is_registered = true;

- drm_fbdev_generic_setup(ddev, bpp);
+ drm_fbdev_generic_setup(ddev, DRM_FB_SET_OPTION(DRM_FB_BPP, bpp));
return 0;

init_failed:
diff --git a/drivers/gpu/drm/tiny/arcpgu.c b/drivers/gpu/drm/tiny/arcpgu.c
index f0fa3b15c341..7f291db460e9 100644
--- a/drivers/gpu/drm/tiny/arcpgu.c
+++ b/drivers/gpu/drm/tiny/arcpgu.c
@@ -392,7 +392,7 @@ static int arcpgu_probe(struct platform_device *pdev)
if (ret)
goto err_unload;

- drm_fbdev_generic_setup(&arcpgu->drm, 16);
+ drm_fbdev_generic_setup(&arcpgu->drm, DRM_FB_SET_OPTION(DRM_FB_BPP, 16));

return 0;

diff --git a/drivers/gpu/drm/tiny/bochs.c b/drivers/gpu/drm/tiny/bochs.c
index ed971c8bb446..fc52d9e7d50e 100644
--- a/drivers/gpu/drm/tiny/bochs.c
+++ b/drivers/gpu/drm/tiny/bochs.c
@@ -663,7 +663,7 @@ static int bochs_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent
if (ret)
goto err_free_dev;

- drm_fbdev_generic_setup(dev, 32);
+ drm_fbdev_generic_setup(dev, DRM_FB_SET_OPTION(DRM_FB_BPP, 32));
return ret;

err_free_dev:
diff --git a/drivers/gpu/drm/tve200/tve200_drv.c b/drivers/gpu/drm/tve200/tve200_drv.c
index 6d9d2921abf4..737cebb655a0 100644
--- a/drivers/gpu/drm/tve200/tve200_drv.c
+++ b/drivers/gpu/drm/tve200/tve200_drv.c
@@ -226,7 +226,7 @@ static int tve200_probe(struct platform_device *pdev)
* Passing in 16 here will make the RGB565 mode the default
* Passing in 32 will use XRGB8888 mode
*/
- drm_fbdev_generic_setup(drm, 16);
+ drm_fbdev_generic_setup(drm, DRM_FB_SET_OPTION(DRM_FB_BPP, 16));

return 0;

diff --git a/drivers/gpu/drm/vboxvideo/vbox_drv.c b/drivers/gpu/drm/vboxvideo/vbox_drv.c
index f4f2bd79a7cb..fbe1f7368d53 100644
--- a/drivers/gpu/drm/vboxvideo/vbox_drv.c
+++ b/drivers/gpu/drm/vboxvideo/vbox_drv.c
@@ -79,7 +79,7 @@ static int vbox_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
if (ret)
goto err_irq_fini;

- drm_fbdev_generic_setup(&vbox->ddev, 32);
+ drm_fbdev_generic_setup(&vbox->ddev, DRM_FB_SET_OPTION(DRM_FB_BPP, 32));

return 0;

diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c
index 162bc18e7497..ecd2b41b87b3 100644
--- a/drivers/gpu/drm/vc4/vc4_drv.c
+++ b/drivers/gpu/drm/vc4/vc4_drv.c
@@ -291,7 +291,7 @@ static int vc4_drm_bind(struct device *dev)
if (ret < 0)
goto unbind_all;

- drm_fbdev_generic_setup(drm, 16);
+ drm_fbdev_generic_setup(drm, DRM_FB_SET_OPTION(DRM_FB_BPP, 16));

return 0;

diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.c b/drivers/gpu/drm/virtio/virtgpu_drv.c
index 5f25a8d15464..ef1e1b6e8cac 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drv.c
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.c
@@ -128,7 +128,7 @@ static int virtio_gpu_probe(struct virtio_device *vdev)
if (ret)
goto err_deinit;

- drm_fbdev_generic_setup(vdev->priv, 32);
+ drm_fbdev_generic_setup(vdev->priv, DRM_FB_SET_OPTION(DRM_FB_BPP, 32));
return 0;

err_deinit:
diff --git a/drivers/gpu/drm/xlnx/zynqmp_dpsub.c b/drivers/gpu/drm/xlnx/zynqmp_dpsub.c
index 824b510e337b..2937e72d9fac 100644
--- a/drivers/gpu/drm/xlnx/zynqmp_dpsub.c
+++ b/drivers/gpu/drm/xlnx/zynqmp_dpsub.c
@@ -135,7 +135,7 @@ static int zynqmp_dpsub_drm_init(struct zynqmp_dpsub *dpsub)
goto err_poll_fini;

/* Initialize fbdev generic emulation. */
- drm_fbdev_generic_setup(drm, 24);
+ drm_fbdev_generic_setup(drm, DRM_FB_SET_OPTION(DRM_FB_BPP, 24));

return 0;

diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h
index 3af4624368d8..1da3ef76f499 100644
--- a/include/drm/drm_fb_helper.h
+++ b/include/drm/drm_fb_helper.h
@@ -35,6 +35,7 @@ struct drm_fb_helper;
#include <drm/drm_client.h>
#include <drm/drm_crtc.h>
#include <drm/drm_device.h>
+#include <linux/bitfield.h>
#include <linux/kgdb.h>

enum mode_set_atomic {
@@ -42,6 +43,17 @@ enum mode_set_atomic {
ENTER_ATOMIC_MODE_SET,
};

+#define DRM_FB_BPP_MASK GENMASK(7, 0)
+
+/* Using the GNU statement expression extension */
+#define DRM_FB_SET_OPTION(option, value) \
+ ({ \
+ WARN_ON(!FIELD_FIT(option##_MASK, value)); \
+ FIELD_PREP(option##_MASK, value); \
+ })
+
+#define DRM_FB_GET_OPTION(option, word) FIELD_GET(option##_MASK, word)
+
/**
* struct drm_fb_helper_surface_size - describes fbdev size and scanout surface size
* @fb_width: fbdev width
--
2.35.1
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