[PATCH v5 5/7] ARM: kirkwood: convert to DT irqchip and clocksource

From: Sebastian Hesselbarth
Date: Tue Jul 02 2013 - 09:15:23 EST

With recent support for true irqchip and clocksource drivers for Orion
SoCs, now make use of it on DT enabled Kirkwood boards.

This also introduces a new Kconfig option for legacy (non-DT) Kirkwood
where old code is moved out to and polishes DT board file a little bit.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@xxxxxxxxx>
---
Changelog:
v4->v5:
- do not re-introduce already removed init_dma_coherent_pool_size
(Reported by Jason Cooper)

@Jason: I did a 'git grep init_dma_coherent_pool_size' and now there
are no users of that function - as it was before. Patch 6/7 only differs
in the 'index' diff line because of the rebase here. I will not resend that,
it should still apply.

Cc: Russell King <linux@xxxxxxxxxxxxxxxx>
Cc: Jason Cooper <jason@xxxxxxxxxxxxxx>
Cc: Andrew Lunn <andrew@xxxxxxx>
Cc: Thomas Petazzoni <thomas.petazzoni@xxxxxxxxxxxxxxxxxx>
Cc: Gregory CLEMENT <gregory.clement@xxxxxxxxxxxxxxxxxx>
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
---
arch/arm/mach-kirkwood/Kconfig | 22 ++++++++++++++++++++++
arch/arm/mach-kirkwood/Makefile | 4 ++--
arch/arm/mach-kirkwood/board-dt.c | 23 ++++++++++++++++-------
3 files changed, 40 insertions(+), 9 deletions(-)

diff --git a/arch/arm/mach-kirkwood/Kconfig b/arch/arm/mach-kirkwood/Kconfig
index 493c71a..ede131e 100644
--- a/arch/arm/mach-kirkwood/Kconfig
+++ b/arch/arm/mach-kirkwood/Kconfig
@@ -2,67 +2,81 @@ if ARCH_KIRKWOOD

menu "Marvell Kirkwood Implementations"

+config KIRKWOOD_LEGACY
+ bool
+
config MACH_D2NET_V2
bool "LaCie d2 Network v2 NAS Board"
+ select KIRKWOOD_LEGACY
help
Say 'Y' here if you want your kernel to support the
LaCie d2 Network v2 NAS.

config MACH_DOCKSTAR
bool "Seagate FreeAgent DockStar"
+ select KIRKWOOD_LEGACY
help
Say 'Y' here if you want your kernel to support the
Seagate FreeAgent DockStar.

config MACH_ESATA_SHEEVAPLUG
bool "Marvell eSATA SheevaPlug Reference Board"
+ select KIRKWOOD_LEGACY
help
Say 'Y' here if you want your kernel to support the
Marvell eSATA SheevaPlug Reference Board.

config MACH_GURUPLUG
bool "Marvell GuruPlug Reference Board"
+ select KIRKWOOD_LEGACY
help
Say 'Y' here if you want your kernel to support the
Marvell GuruPlug Reference Board.

config MACH_INETSPACE_V2
bool "LaCie Internet Space v2 NAS Board"
+ select KIRKWOOD_LEGACY
help
Say 'Y' here if you want your kernel to support the
LaCie Internet Space v2 NAS.

config MACH_MV88F6281GTW_GE
bool "Marvell 88F6281 GTW GE Board"
+ select KIRKWOOD_LEGACY
help
Say 'Y' here if you want your kernel to support the
Marvell 88F6281 GTW GE Board.

config MACH_NET2BIG_V2
bool "LaCie 2Big Network v2 NAS Board"
+ select KIRKWOOD_LEGACY
help
Say 'Y' here if you want your kernel to support the
LaCie 2Big Network v2 NAS.

config MACH_NET5BIG_V2
bool "LaCie 5Big Network v2 NAS Board"
+ select KIRKWOOD_LEGACY
help
Say 'Y' here if you want your kernel to support the
LaCie 5Big Network v2 NAS.

config MACH_NETSPACE_MAX_V2
bool "LaCie Network Space Max v2 NAS Board"
+ select KIRKWOOD_LEGACY
help
Say 'Y' here if you want your kernel to support the
LaCie Network Space Max v2 NAS.

config MACH_NETSPACE_V2
bool "LaCie Network Space v2 NAS Board"
+ select KIRKWOOD_LEGACY
help
Say 'Y' here if you want your kernel to support the
LaCie Network Space v2 NAS.

config MACH_OPENRD
+ select KIRKWOOD_LEGACY
bool

config MACH_OPENRD_BASE
@@ -88,30 +102,35 @@ config MACH_OPENRD_ULTIMATE

config MACH_RD88F6192_NAS
bool "Marvell RD-88F6192-NAS Reference Board"
+ select KIRKWOOD_LEGACY
help
Say 'Y' here if you want your kernel to support the
Marvell RD-88F6192-NAS Reference Board.

config MACH_RD88F6281
bool "Marvell RD-88F6281 Reference Board"
+ select KIRKWOOD_LEGACY
help
Say 'Y' here if you want your kernel to support the
Marvell RD-88F6281 Reference Board.

config MACH_SHEEVAPLUG
bool "Marvell SheevaPlug Reference Board"
+ select KIRKWOOD_LEGACY
help
Say 'Y' here if you want your kernel to support the
Marvell SheevaPlug Reference Board.

config MACH_T5325
bool "HP t5325 Thin Client"
+ select KIRKWOOD_LEGACY
help
Say 'Y' here if you want your kernel to support the
HP t5325 Thin Client.

config MACH_TS219
bool "QNAP TS-110, TS-119, TS-119P+, TS-210, TS-219, TS-219P and TS-219P+ Turbo NAS"
+ select KIRKWOOD_LEGACY
help
Say 'Y' here if you want your kernel to support the
QNAP TS-110, TS-119, TS-119P+, TS-210, TS-219, TS-219P and
@@ -119,6 +138,7 @@ config MACH_TS219

config MACH_TS41X
bool "QNAP TS-410, TS-410U, TS-419P, TS-419P+ and TS-419U Turbo NAS"
+ select KIRKWOOD_LEGACY
help
Say 'Y' here if you want your kernel to support the
QNAP TS-410, TS-410U, TS-419P, TS-419P+ and TS-419U Turbo
@@ -129,6 +149,8 @@ comment "Device tree entries"
config ARCH_KIRKWOOD_DT
bool "Marvell Kirkwood Flattened Device Tree"
select KIRKWOOD_CLK
+ select ORION_IRQCHIP
+ select ORION_TIMER
select POWER_SUPPLY
select POWER_RESET
select POWER_RESET_GPIO
diff --git a/arch/arm/mach-kirkwood/Makefile b/arch/arm/mach-kirkwood/Makefile
index 062f8c7..f78f333 100644
--- a/arch/arm/mach-kirkwood/Makefile
+++ b/arch/arm/mach-kirkwood/Makefile
@@ -1,5 +1,5 @@
-obj-y += common.o irq.o pcie.o mpp.o
-
+obj-y += common.o pcie.o
+obj-$(CONFIG_KIRKWOOD_LEGACY) += irq.o mpp.o
obj-$(CONFIG_MACH_D2NET_V2) += d2net_v2-setup.o lacie_v2-common.o
obj-$(CONFIG_MACH_DOCKSTAR) += dockstar-setup.o
obj-$(CONFIG_MACH_ESATA_SHEEVAPLUG) += sheevaplug-setup.o
diff --git a/arch/arm/mach-kirkwood/board-dt.c b/arch/arm/mach-kirkwood/board-dt.c
index 881f37e..56d4a5e 100644
--- a/arch/arm/mach-kirkwood/board-dt.c
+++ b/arch/arm/mach-kirkwood/board-dt.c
@@ -15,6 +15,9 @@
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/clk-provider.h>
+#include <linux/clocksource.h>
+#include <linux/dma-mapping.h>
+#include <linux/irqchip.h>
#include <linux/kexec.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
@@ -67,10 +70,17 @@ static void __init kirkwood_legacy_clk_init(void)
clk_prepare_enable(clk);
}

-static void __init kirkwood_of_clk_init(void)
+static void __init kirkwood_dt_time_init(void)
{
of_clk_init(NULL);
- kirkwood_legacy_clk_init();
+ clocksource_of_init();
+}
+
+static void __init kirkwood_dt_init_early(void)
+{
+ mvebu_mbus_init("marvell,kirkwood-mbus",
+ BRIDGE_WINS_BASE, BRIDGE_WINS_SZ,
+ DDR_WINDOW_CPU_BASE, DDR_WINDOW_CPU_SZ);
}

static void __init kirkwood_dt_init(void)
@@ -91,8 +101,8 @@ static void __init kirkwood_dt_init(void)

kirkwood_cpufreq_init();

- /* Setup root of clk tree */
- kirkwood_of_clk_init();
+ /* Setup clocks for legacy devices */
+ kirkwood_legacy_clk_init();

kirkwood_cpuidle_init();

@@ -114,9 +124,8 @@ static const char * const kirkwood_dt_board_compat[] = {
DT_MACHINE_START(KIRKWOOD_DT, "Marvell Kirkwood (Flattened Device Tree)")
/* Maintainer: Jason Cooper <jason@xxxxxxxxxxxxxx> */
.map_io = kirkwood_map_io,
- .init_early = kirkwood_init_early,
- .init_irq = orion_dt_init_irq,
- .init_time = kirkwood_timer_init,
+ .init_early = kirkwood_dt_init_early,
+ .init_time = kirkwood_dt_time_init,
.init_machine = kirkwood_dt_init,
.restart = kirkwood_restart,
.dt_compat = kirkwood_dt_board_compat,
--
1.7.2.5

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