[PATCH 18/40] x86/efi: efifb: Move DMI based quirks handling out of generic code

Matt Fleming
2016-04-25T20:14:00Z

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

The efifb quirks handling based on DMI identification of the platform is
specific to x86, so move it to x86 arch code.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: David Herrmann <dh.herrmann@gmail.com>
Acked-by: Peter Jones <pjones@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk>
---
arch/x86/include/asm/efi.h | 2 ++
arch/x86/kernel/sysfb_efi.c | 15 +++++++++++++++
drivers/video/fbdev/efifb.c | 15 ++++-----------
3 files changed, 21 insertions(+), 11 deletions(-)

diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h
index 10e440770371..8747abe8872f 100644
--- a/arch/x86/include/asm/efi.h
+++ b/arch/x86/include/asm/efi.h
@@ -180,6 +180,8 @@ static inline bool efi_runtime_supported(void)
extern struct console early_efi_console;
extern void parse_efi_setup(u64 phys_addr, u32 data_len);

+extern void efifb_setup_from_dmi(struct screen_info *si, const char *opt);
+
#ifdef CONFIG_EFI_MIXED
extern void efi_thunk_runtime_setup(void);
extern efi_status_t efi_thunk_set_virtual_address_map(
diff --git a/arch/x86/kernel/sysfb_efi.c b/arch/x86/kernel/sysfb_efi.c
index b285d4e8c68e..e21a8a7ddcff 100644
--- a/arch/x86/kernel/sysfb_efi.c
+++ b/arch/x86/kernel/sysfb_efi.c
@@ -68,6 +68,21 @@ struct efifb_dmi_info efifb_dmi_list[] = {
[M_UNKNOWN] = { NULL, 0, 0, 0, 0, OVERRIDE_NONE }
};

+void efifb_setup_from_dmi(struct screen_info *si, const char *opt)
+{
+ int i;
+
+ for (i = 0; i < M_UNKNOWN; i++) {
+ if (efifb_dmi_list[i].base != 0 &&
+ !strcmp(opt, efifb_dmi_list[i].optname)) {
+ si->lfb_base = efifb_dmi_list[i].base;
+ si->lfb_linelength = efifb_dmi_list[i].stride;
+ si->lfb_width = efifb_dmi_list[i].width;
+ si->lfb_height = efifb_dmi_list[i].height;
+ }
+ }
+}
+
#define choose_value(dmivalue, fwvalue, field, flags) ({ \
typeof(fwvalue) _ret_ = fwvalue; \
if ((flags) & (field)) \
diff --git a/drivers/video/fbdev/efifb.c b/drivers/video/fbdev/efifb.c
index 95d293b7445a..dd594369b8a6 100644
--- a/drivers/video/fbdev/efifb.c
+++ b/drivers/video/fbdev/efifb.c
@@ -8,6 +8,7 @@

#include <linux/module.h>
#include <linux/kernel.h>
+#include <linux/efi.h>
#include <linux/errno.h>
#include <linux/fb.h>
#include <linux/platform_device.h>
@@ -15,7 +16,7 @@
#include <linux/dmi.h>
#include <linux/pci.h>
#include <video/vga.h>
-#include <asm/sysfb.h>
+#include <asm/efi.h>

static bool request_mem_succeeded = false;

@@ -85,21 +86,13 @@ static struct fb_ops efifb_ops = {
static int efifb_setup(char *options)
{
char *this_opt;
- int i;

if (options && *options) {
while ((this_opt = strsep(&options, ",")) != NULL) {
if (!*this_opt) continue;

- for (i = 0; i < M_UNKNOWN; i++) {
- if (efifb_dmi_list[i].base != 0 &&
- !strcmp(this_opt, efifb_dmi_list[i].optname)) {
- screen_info.lfb_base = efifb_dmi_list[i].base;
- screen_info.lfb_linelength = efifb_dmi_list[i].stride;
- screen_info.lfb_width = efifb_dmi_list[i].width;
- screen_info.lfb_height = efifb_dmi_list[i].height;
- }
- }
+ efifb_setup_from_dmi(&screen_info, this_opt);
+
if (!strncmp(this_opt, "base:", 5))
screen_info.lfb_base = simple_strtoul(this_opt+5, NULL, 0);
else if (!strncmp(this_opt, "stride:", 7))
--
2.7.3