linux-kernel - [PATCH 24/40] efifb: Enable the efi-framebuffer platform driver for ARM and arm64

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Date:	Mon, 25 Apr 2016 21:06:56 +0100
From:	Matt Fleming <matt@...eblueprint.co.uk>
To:	Ingo Molnar <mingo@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H . Peter Anvin" <hpa@...or.com>
Cc:	Ard Biesheuvel <ard.biesheuvel@...aro.org>,
	linux-kernel@...r.kernel.org, linux-efi@...r.kernel.org,
	Matt Fleming <matt@...eblueprint.co.uk>,
	David Herrmann <dh.herrmann@...il.com>,
	Mark Rutland <mark.rutland@....com>,
	Peter Jones <pjones@...hat.com>,
	Will Deacon <will.deacon@....com>
Subject: [PATCH 24/40] efifb: Enable the efi-framebuffer platform driver for ARM and arm64

From: Ard Biesheuvel <ard.biesheuvel@...aro.org>

Allows the efifb driver to be built for ARM and arm64. This simply involves
updating the Kconfig dependency expression, and supplying dummy versions of
efifb_setup_from_dmi().

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@...aro.org>
Cc: Mark Rutland <mark.rutland@....com>
Cc: Will Deacon <will.deacon@....com>
Cc: David Herrmann <dh.herrmann@...il.com>
Cc: Peter Jones <pjones@...hat.com>
Signed-off-by: Matt Fleming <matt@...eblueprint.co.uk>
---
 arch/arm/include/asm/efi.h   | 4 ++++
 arch/arm64/include/asm/efi.h | 4 ++++
 drivers/video/fbdev/Kconfig  | 2 +-
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/arch/arm/include/asm/efi.h b/arch/arm/include/asm/efi.h
index 25f8b1162c2e..b45fe39bf35b 100644
--- a/arch/arm/include/asm/efi.h
+++ b/arch/arm/include/asm/efi.h
@@ -67,6 +67,10 @@ void efi_virtmap_unload(void);
 struct screen_info *alloc_screen_info(efi_system_table_t *sys_table_arg);
 void free_screen_info(efi_system_table_t *sys_table, struct screen_info *si);
 
+static inline void efifb_setup_from_dmi(struct screen_info *si, const char *opt)
+{
+}
+
 /*
  * A reasonable upper bound for the uncompressed kernel size is 32 MBytes,
  * so we will reserve that amount of memory. We have no easy way to tell what
diff --git a/arch/arm64/include/asm/efi.h b/arch/arm64/include/asm/efi.h
index fa09886f72e6..79dc8c237c7e 100644
--- a/arch/arm64/include/asm/efi.h
+++ b/arch/arm64/include/asm/efi.h
@@ -59,6 +59,10 @@ int efi_create_mapping(struct mm_struct *mm, efi_memory_desc_t *md);
 #define alloc_screen_info(x...)		&screen_info
 #define free_screen_info(x...)
 
+static inline void efifb_setup_from_dmi(struct screen_info *si, const char *opt)
+{
+}
+
 #define EFI_ALLOC_ALIGN		SZ_64K
 
 /*
diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
index 983280e8d93f..e5a391aecde1 100644
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig
@@ -761,7 +761,7 @@ config FB_VESA
 
 config FB_EFI
 	bool "EFI-based Framebuffer Support"
-	depends on (FB = y) && X86 && EFI
+	depends on (FB = y) && !IA64 && EFI
 	select FB_CFB_FILLRECT
 	select FB_CFB_COPYAREA
 	select FB_CFB_IMAGEBLIT
-- 
2.7.3