linux-kernel - [PATCH 1/4] arm: vt8500: Add support for Wondermedia WM8750/WM8850

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Message-Id: <1356650452-16559-2-git-send-email-linux@prisktech.co.nz>
Date:	Fri, 28 Dec 2012 12:20:49 +1300
From:	Tony Prisk <linux@...sktech.co.nz>
To:	Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	vt8500-wm8505-linux-kernel@...glegroups.com,
	Tony Prisk <linux@...sktech.co.nz>
Subject: [PATCH 1/4] arm: vt8500: Add support for Wondermedia WM8750/WM8850

This patch adds support for the WM8750 (ARMv6) and WM8850 (ARMv7).

Common features across all SoCs are split into ARCH_VT8500 and
unique features are specified by each SoC option.

Signed-off-by: Tony Prisk <linux@...sktech.co.nz>
---
 Documentation/devicetree/bindings/arm/vt8500.txt |    8 ++++++
 arch/arm/Kconfig                                 |   17 +++++++----
 arch/arm/mach-vt8500/Kconfig                     |   33 ++++++++++++++++++++--
 arch/arm/mach-vt8500/vt8500.c                    |    2 ++
 4 files changed, 51 insertions(+), 9 deletions(-)

diff --git a/Documentation/devicetree/bindings/arm/vt8500.txt b/Documentation/devicetree/bindings/arm/vt8500.txt
index d657832..87dc1dd 100644
--- a/Documentation/devicetree/bindings/arm/vt8500.txt
+++ b/Documentation/devicetree/bindings/arm/vt8500.txt
@@ -12,3 +12,11 @@ compatible = "wm,wm8505";
 Boards with the Wondermedia WM8650 SoC shall have the following properties:
 Required root node property:
 compatible = "wm,wm8650";
+
+Boards with the Wondermedia WM8750 SoC shall have the following properties:
+Required root node property:
+compatible = "wm,wm8750";
+
+Boards with the Wondermedia WM8850 SoC shall have the following properties:
+Required root node property:
+compatible = "wm,wm8850";
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index f95ba14..fbb9492 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -952,20 +952,25 @@ config ARCH_OMAP
 
 config ARCH_VT8500_SINGLE
 	bool "VIA/WonderMedia 85xx"
-	select ARCH_HAS_CPUFREQ
-	select ARCH_REQUIRE_GPIOLIB
-	select CLKDEV_LOOKUP
+	select ARCH_VT8500
 	select COMMON_CLK
 	select CPU_ARM926T
-	select GENERIC_CLOCKEVENTS
-	select GENERIC_GPIO
-	select HAVE_CLK
 	select MULTI_IRQ_HANDLER
 	select SPARSE_IRQ
 	select USE_OF
 	help
 	  Support for VIA/WonderMedia VT8500/WM85xx System-on-Chip.
 
+config ARCH_WM8750_SINGLE
+	bool "WonderMedia WM8750/WM8850"
+	select ARCH_VT8500
+	select COMMON_CLK
+	select MULTI_IRQ_HANDLER
+	select SPARSE_IRQ
+	select USE_OF
+	help
+	  Support for WonderMedia WM8750/WM8850 System-on-Chip.
+
 endchoice
 
 menu "Multiple platform selection"
diff --git a/arch/arm/mach-vt8500/Kconfig b/arch/arm/mach-vt8500/Kconfig
index 2ed0b7d..d67c7fa 100644
--- a/arch/arm/mach-vt8500/Kconfig
+++ b/arch/arm/mach-vt8500/Kconfig
@@ -1,12 +1,39 @@
 config ARCH_VT8500
-	bool "VIA/WonderMedia 85xx" if ARCH_MULTI_V5
-	default ARCH_VT8500_SINGLE
+	bool
 	select ARCH_HAS_CPUFREQ
 	select ARCH_REQUIRE_GPIOLIB
 	select CLKDEV_LOOKUP
-	select CPU_ARM926T
 	select GENERIC_CLOCKEVENTS
 	select GENERIC_GPIO
 	select HAVE_CLK
+
+config ARCH_WM8505
+	bool "VIA/WonderMedia 85xx" if !ARCH_VT8500_SINGLE
+	depends on ARCH_MULTI_V5
+	default ARCH_VT8500_SINGLE
+	select ARCH_VT8500
+	select CPU_ARM926T
 	help
 	  Support for VIA/WonderMedia VT8500/WM85xx System-on-Chip.
+
+config ARCH_WM8750
+	bool "WonderMedia WM8750"
+	depends on ARCH_MULTI_V6 || ARCH_WM8750_SINGLE
+	select ARCH_VT8500
+	select CPU_V6
+	help
+	  Support for WonderMedia WM8750 System-on-Chip.
+
+config ARCH_WM8850
+	bool "WonderMedia WM8850"
+	depends on ARCH_MULTI_V7 || ARCH_WM8750_SINGLE
+	select ARCH_VT8500
+	select CPU_V7
+	help
+	  Support for WonderMedia WM8850 System-on-Chip.
+
+# ensure that ARCH_WM8850 is on if ARCH_WM8750 is off
+config ARCH_WM8850_AUTO
+      def_bool y
+      depends on ARCH_WM8750_SINGLE && !ARCH_WM8750
+      select ARCH_WM8850
diff --git a/arch/arm/mach-vt8500/vt8500.c b/arch/arm/mach-vt8500/vt8500.c
index 3c66d48..55162ab 100644
--- a/arch/arm/mach-vt8500/vt8500.c
+++ b/arch/arm/mach-vt8500/vt8500.c
@@ -183,6 +183,8 @@ static const char * const vt8500_dt_compat[] = {
 	"via,vt8500",
 	"wm,wm8650",
 	"wm,wm8505",
+	"wm,wm8750",
+	"wm,wm8850",
 };
 
 DT_MACHINE_START(WMT_DT, "VIA/Wondermedia SoC (Device Tree Support)")
-- 
1.7.9.5

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