arm/tegra: prepare early init for multiple tegra variants

This patch splits the early init code in a common and a tegra20 specific part.

Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Colin Cross <ccross@android.com>
Signed-off-by: Olof Johansson <olof@lixom.net>

7 files changed, 34 insertions, 27 deletions

diff --git a/arch/arm/mach-tegra/board-dt.c b/arch/arm/mach-tegra/board-dt.c
index c21863d6425d..ddaa037be028 100644
--- a/arch/arm/mach-tegra/board-dt.c
+++ b/arch/arm/mach-tegra/board-dt.c
@@ -53,17 +53,6 @@ void seaboard_pinmux_init(void);
 void trimslice_pinmux_init(void);
 void ventana_pinmux_init(void);
 
-static const struct of_device_id tegra_dt_irq_match[] __initconst = {
-        { .compatible = "arm,cortex-a9-gic", .data = gic_of_init },
-        { }
-};
-
-void __init tegra_dt_init_irq(void)
-{
-        tegra_init_irq();
-        of_irq_init(tegra_dt_irq_match);
-}
-
 struct of_dev_auxdata tegra20_auxdata_lookup[] __initdata = {
         OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC1_BASE, "sdhci-tegra.0", NULL),
         OF_DEV_AUXDATA("nvidia,tegra20-sdhci", TEGRA_SDMMC2_BASE, "sdhci-tegra.1", NULL),
@@ -139,7 +128,7 @@ static void __init tegra_dt_init(void)
                 "Unknown platform! Pinmuxing not initialized\n");
 }
 
-static const char * tegra_dt_board_compat[] = {
+static const char *tegra20_dt_board_compat[] = {
         "compulab,trimslice",
         "nvidia,harmony",
         "compal,paz00",
@@ -148,12 +137,12 @@ static const char * tegra_dt_board_compat[] = {
         NULL
 };
 
-DT_MACHINE_START(TEGRA_DT, "nVidia Tegra (Flattened Device Tree)")
+DT_MACHINE_START(TEGRA_DT, "nVidia Tegra20 (Flattened Device Tree)")
         .map_io         = tegra_map_common_io,
-        .init_early     = tegra_init_early,
+        .init_early     = tegra20_init_early,
         .init_irq       = tegra_dt_init_irq,
         .handle_irq     = gic_handle_irq,
         .timer          = &tegra_timer,
         .init_machine   = tegra_dt_init,
-        .dt_compat      = tegra_dt_board_compat,
+        .dt_compat      = tegra20_dt_board_compat,
 MACHINE_END
diff --git a/arch/arm/mach-tegra/board-harmony.c b/arch/arm/mach-tegra/board-harmony.c
index fd190a8dc665..d60a0d45f2f7 100644
--- a/arch/arm/mach-tegra/board-harmony.c
+++ b/arch/arm/mach-tegra/board-harmony.c
@@ -186,7 +186,7 @@ MACHINE_START(HARMONY, "harmony")
         .atag_offset    = 0x100,
         .fixup          = tegra_harmony_fixup,
         .map_io         = tegra_map_common_io,
-        .init_early     = tegra_init_early,
+        .init_early     = tegra20_init_early,
         .init_irq       = tegra_init_irq,
         .handle_irq     = gic_handle_irq,
         .timer          = &tegra_timer,
diff --git a/arch/arm/mach-tegra/board-paz00.c b/arch/arm/mach-tegra/board-paz00.c
index 0b7e1cfee70d..e68b40727e6d 100644
--- a/arch/arm/mach-tegra/board-paz00.c
+++ b/arch/arm/mach-tegra/board-paz00.c
@@ -189,7 +189,7 @@ MACHINE_START(PAZ00, "Toshiba AC100 / Dynabook AZ")
         .atag_offset    = 0x100,
         .fixup          = tegra_paz00_fixup,
         .map_io         = tegra_map_common_io,
-        .init_early     = tegra_init_early,
+        .init_early     = tegra20_init_early,
         .init_irq       = tegra_init_irq,
         .handle_irq     = gic_handle_irq,
         .timer          = &tegra_timer,
diff --git a/arch/arm/mach-tegra/board-seaboard.c b/arch/arm/mach-tegra/board-seaboard.c
index 7328379b1356..b79f9ce9941c 100644
--- a/arch/arm/mach-tegra/board-seaboard.c
+++ b/arch/arm/mach-tegra/board-seaboard.c
@@ -283,7 +283,7 @@ static void __init tegra_wario_init(void)
 MACHINE_START(SEABOARD, "seaboard")
         .atag_offset    = 0x100,
         .map_io         = tegra_map_common_io,
-        .init_early     = tegra_init_early,
+        .init_early     = tegra20_init_early,
         .init_irq       = tegra_init_irq,
         .handle_irq     = gic_handle_irq,
         .timer          = &tegra_timer,
@@ -293,7 +293,7 @@ MACHINE_END
 MACHINE_START(KAEN, "kaen")
         .atag_offset    = 0x100,
         .map_io         = tegra_map_common_io,
-        .init_early     = tegra_init_early,
+        .init_early     = tegra20_init_early,
         .init_irq       = tegra_init_irq,
         .handle_irq     = gic_handle_irq,
         .timer          = &tegra_timer,
@@ -303,7 +303,7 @@ MACHINE_END
 MACHINE_START(WARIO, "wario")
         .atag_offset    = 0x100,
         .map_io         = tegra_map_common_io,
-        .init_early     = tegra_init_early,
+        .init_early     = tegra20_init_early,
         .init_irq       = tegra_init_irq,
         .handle_irq     = gic_handle_irq,
         .timer          = &tegra_timer,
diff --git a/arch/arm/mach-tegra/board-trimslice.c b/arch/arm/mach-tegra/board-trimslice.c
index 60a36a2e0be1..4a197a20be93 100644
--- a/arch/arm/mach-tegra/board-trimslice.c
+++ b/arch/arm/mach-tegra/board-trimslice.c
@@ -175,7 +175,7 @@ MACHINE_START(TRIMSLICE, "trimslice")
         .atag_offset    = 0x100,
         .fixup          = tegra_trimslice_fixup,
         .map_io         = tegra_map_common_io,
-        .init_early     = tegra_init_early,
+        .init_early     = tegra20_init_early,
         .init_irq       = tegra_init_irq,
         .handle_irq     = gic_handle_irq,
         .timer          = &tegra_timer,
diff --git a/arch/arm/mach-tegra/board.h b/arch/arm/mach-tegra/board.h
index 1d14df7eb7de..fdec3ffa4455 100644
--- a/arch/arm/mach-tegra/board.h
+++ b/arch/arm/mach-tegra/board.h
@@ -25,9 +25,10 @@
 
 void tegra_assert_system_reset(char mode, const char *cmd);
 
-void __init tegra_init_early(void);
+void __init tegra20_init_early(void);
 void __init tegra_map_common_io(void);
 void __init tegra_init_irq(void);
+void __init tegra_dt_init_irq(void);
 void __init tegra_init_clock(void);
 int __init tegra_pcie_init(bool init_port0, bool init_port1);
 
diff --git a/arch/arm/mach-tegra/common.c b/arch/arm/mach-tegra/common.c
index 690b888be506..0fafb60497a5 100644
--- a/arch/arm/mach-tegra/common.c
+++ b/arch/arm/mach-tegra/common.c
@@ -1,5 +1,5 @@
 /*
- * arch/arm/mach-tegra/board-harmony.c
+ * arch/arm/mach-tegra/common.c
  *
  * Copyright (C) 2010 Google, Inc.
  *
@@ -21,8 +21,10 @@
 #include <linux/io.h>
 #include <linux/clk.h>
 #include <linux/delay.h>
+#include <linux/of_irq.h>
 
 #include <asm/hardware/cache-l2x0.h>
+#include <asm/hardware/gic.h>
 
 #include <mach/iomap.h>
 #include <mach/system.h>
@@ -33,6 +35,17 @@
 
 void (*arch_reset)(char mode, const char *cmd) = tegra_assert_system_reset;
 
+static const struct of_device_id tegra_dt_irq_match[] __initconst = {
+        { .compatible = "arm,cortex-a9-gic", .data = gic_of_init },
+        { }
+};
+
+void __init tegra_dt_init_irq(void)
+{
+        tegra_init_irq();
+        of_irq_init(tegra_dt_irq_match);
+}
+
 void tegra_assert_system_reset(char mode, const char *cmd)
 {
         void __iomem *reset = IO_ADDRESS(TEGRA_CLK_RESET_BASE + 0x04);
@@ -44,7 +57,8 @@ void tegra_assert_system_reset(char mode, const char *cmd)
         writel_relaxed(reg, reset);
 }
 
-static __initdata struct tegra_clk_init_table common_clk_init_table[] = {
+#ifdef CONFIG_ARCH_TEGRA_2x_SOC
+static __initdata struct tegra_clk_init_table tegra20_clk_init_table[] = {
         /* name         parent          rate            enabled */
         { "clk_m",      NULL,           0,              true },
         { "pll_p",      "clk_m",        216000000,      true },
@@ -60,6 +74,7 @@ static __initdata struct tegra_clk_init_table common_clk_init_table[] = {
         { "cpu",        NULL,           0,              true },
         { NULL,         NULL,           0,              0},
 };
+#endif
 
 static void __init tegra_init_cache(void)
 {
@@ -74,10 +89,12 @@ static void __init tegra_init_cache(void)
 
 }
 
-void __init tegra_init_early(void)
+#ifdef CONFIG_ARCH_TEGRA_2x_SOC
+void __init tegra20_init_early(void)
 {
         tegra_init_fuse();
-        tegra_init_clock();
-        tegra_clk_init_from_table(common_clk_init_table);
+        tegra2_init_clocks();
+        tegra_clk_init_from_table(tegra20_clk_init_table);
         tegra_init_cache();
 }
+#endif