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authorArnd Bergmann <arnd@arndb.de>2014-03-29 02:03:39 +0100
committerArnd Bergmann <arnd@arndb.de>2014-03-29 02:03:39 +0100
commit9e0c42ea3d2c8e24e6ad27a6d749b3085f1a2430 (patch)
tree21b276e3d14bcdfe9049d8bbd8ba17b9523b0c31 /arch/arm/mach-exynos
parent2c793fa3493d4e7b7f6cc3392458ef9d94884dac (diff)
parent602408e3de70d132c115670a366f4c5ae657080c (diff)
Merge tag 'exynos-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/cleanup3
Merge "Exynos cleanup for v3.15" from Kukjin Kim: - reorganize code for - add support reserve memory for mfc-v7 - consolidate exynos4 and exynos5 machine codes - add generic compatible strings for exynos4 and exynos5 - update DT with generic compatible strings - move clk related dt-binding header file in dt-bindings/clock * tag 'exynos-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: dt-bindings: clock: Move exynos-audss-clk.h to dt-bindings/clock ARM: dts: Update Exynos DT files with generic compatible strings ARM: EXYNOS: Add generic compatible strings ARM: EXYNOS: Consolidate exynos4 and exynos5 machine files ARM: EXYNOS: Consolidate CPU init code ARM: SAMSUNG: Introduce generic Exynos4 and 5 helpers ARM: EXYNOS: Add support to reserve memory for MFC-v7 ARM: SAMSUNG: Reorganize calls to reserve memory for MFC Conflicts: arch/arm/mach-exynos/exynos.c Signed-off-by; Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arm/mach-exynos')
-rw-r--r--arch/arm/mach-exynos/Makefile7
-rw-r--r--arch/arm/mach-exynos/common.h3
-rw-r--r--arch/arm/mach-exynos/exynos.c (renamed from arch/arm/mach-exynos/common.c)228
-rw-r--r--arch/arm/mach-exynos/mach-exynos4-dt.c59
-rw-r--r--arch/arm/mach-exynos/mach-exynos5-dt.c81
-rw-r--r--arch/arm/mach-exynos/mfc.h16
-rw-r--r--arch/arm/mach-exynos/regs-pmu.h1
7 files changed, 127 insertions, 268 deletions
diff --git a/arch/arm/mach-exynos/Makefile b/arch/arm/mach-exynos/Makefile
index 58fe9e6f542f..a656dbe3b78c 100644
--- a/arch/arm/mach-exynos/Makefile
+++ b/arch/arm/mach-exynos/Makefile
@@ -12,7 +12,7 @@ obj- :=
# Core
-obj-$(CONFIG_ARCH_EXYNOS) += common.o
+obj-$(CONFIG_ARCH_EXYNOS) += exynos.o
obj-$(CONFIG_PM_SLEEP) += pm.o sleep.o
obj-$(CONFIG_PM_GENERIC_DOMAINS) += pm_domains.o
@@ -29,8 +29,3 @@ obj-$(CONFIG_ARCH_EXYNOS) += firmware.o
plus_sec := $(call as-instr,.arch_extension sec,+sec)
AFLAGS_exynos-smc.o :=-Wa,-march=armv7-a$(plus_sec)
-
-# machine support
-
-obj-$(CONFIG_ARCH_EXYNOS4) += mach-exynos4-dt.o
-obj-$(CONFIG_ARCH_EXYNOS5) += mach-exynos5-dt.o
diff --git a/arch/arm/mach-exynos/common.h b/arch/arm/mach-exynos/common.h
index aba6a2ad7d1b..9ef3f83efaff 100644
--- a/arch/arm/mach-exynos/common.h
+++ b/arch/arm/mach-exynos/common.h
@@ -19,8 +19,7 @@ void mct_init(void __iomem *base, int irq_g0, int irq_l0, int irq_l1);
struct map_desc;
void exynos_init_io(void);
-void exynos4_restart(enum reboot_mode mode, const char *cmd);
-void exynos5_restart(enum reboot_mode mode, const char *cmd);
+void exynos_restart(enum reboot_mode mode, const char *cmd);
void exynos_cpuidle_init(void);
void exynos_cpufreq_init(void);
void exynos_init_late(void);
diff --git a/arch/arm/mach-exynos/common.c b/arch/arm/mach-exynos/exynos.c
index e98ddadc5f74..4987ec7711c3 100644
--- a/arch/arm/mach-exynos/common.c
+++ b/arch/arm/mach-exynos/exynos.c
@@ -1,105 +1,40 @@
/*
- * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
- * http://www.samsung.com
+ * SAMSUNG EXYNOS Flattened Device Tree enabled machine
*
- * Common Codes for EXYNOS
+ * Copyright (c) 2010-2014 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
-#include <linux/kernel.h>
-#include <linux/bitops.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/irqchip.h>
+#include <linux/init.h>
#include <linux/io.h>
-#include <linux/device.h>
-#include <linux/gpio.h>
-#include <clocksource/samsung_pwm.h>
-#include <linux/sched.h>
-#include <linux/serial_core.h>
+#include <linux/kernel.h>
#include <linux/serial_s3c.h>
#include <linux/of.h>
-#include <linux/of_fdt.h>
-#include <linux/of_irq.h>
-#include <linux/pm_domain.h>
-#include <linux/export.h>
-#include <linux/irqdomain.h>
#include <linux/of_address.h>
-#include <linux/irqchip/arm-gic.h>
-#include <linux/irqchip/chained_irq.h>
+#include <linux/of_fdt.h>
+#include <linux/of_platform.h>
#include <linux/platform_device.h>
+#include <linux/pm_domain.h>
-#include <asm/proc-fns.h>
-#include <asm/exception.h>
+#include <asm/cacheflush.h>
#include <asm/hardware/cache-l2x0.h>
+#include <asm/mach/arch.h>
#include <asm/mach/map.h>
-#include <asm/mach/irq.h>
-#include <asm/cacheflush.h>
+#include <asm/memory.h>
#include <plat/cpu.h>
-#include <plat/pm.h>
#include "common.h"
+#include "mfc.h"
#include "regs-pmu.h"
#define L2_AUX_VAL 0x7C470001
#define L2_AUX_MASK 0xC200ffff
-static const char name_exynos4210[] = "EXYNOS4210";
-static const char name_exynos4212[] = "EXYNOS4212";
-static const char name_exynos4412[] = "EXYNOS4412";
-static const char name_exynos5250[] = "EXYNOS5250";
-static const char name_exynos5420[] = "EXYNOS5420";
-static const char name_exynos5440[] = "EXYNOS5440";
-
-static void exynos4_map_io(void);
-static void exynos5_map_io(void);
-static int exynos_init(void);
-
-static struct cpu_table cpu_ids[] __initdata = {
- {
- .idcode = EXYNOS4210_CPU_ID,
- .idmask = EXYNOS4_CPU_MASK,
- .map_io = exynos4_map_io,
- .init = exynos_init,
- .name = name_exynos4210,
- }, {
- .idcode = EXYNOS4212_CPU_ID,
- .idmask = EXYNOS4_CPU_MASK,
- .map_io = exynos4_map_io,
- .init = exynos_init,
- .name = name_exynos4212,
- }, {
- .idcode = EXYNOS4412_CPU_ID,
- .idmask = EXYNOS4_CPU_MASK,
- .map_io = exynos4_map_io,
- .init = exynos_init,
- .name = name_exynos4412,
- }, {
- .idcode = EXYNOS5250_SOC_ID,
- .idmask = EXYNOS5_SOC_MASK,
- .map_io = exynos5_map_io,
- .init = exynos_init,
- .name = name_exynos5250,
- }, {
- .idcode = EXYNOS5420_SOC_ID,
- .idmask = EXYNOS5_SOC_MASK,
- .map_io = exynos5_map_io,
- .init = exynos_init,
- .name = name_exynos5420,
- }, {
- .idcode = EXYNOS5440_SOC_ID,
- .idmask = EXYNOS5_SOC_MASK,
- .init = exynos_init,
- .name = name_exynos5440,
- },
-};
-
-/* Initial IO mappings */
-
static struct map_desc exynos4_iodesc[] __initdata = {
{
.virtual = (unsigned long)S3C_VA_SYS,
@@ -263,19 +198,11 @@ static struct map_desc exynos5_iodesc[] __initdata = {
},
};
-void exynos4_restart(enum reboot_mode mode, const char *cmd)
-{
- __raw_writel(0x1, S5P_SWRESET);
-}
-
-void exynos5_restart(enum reboot_mode mode, const char *cmd)
+void exynos_restart(enum reboot_mode mode, const char *cmd)
{
struct device_node *np;
- u32 val;
- void __iomem *addr;
-
- val = 0x1;
- addr = EXYNOS_SWRESET;
+ u32 val = 0x1;
+ void __iomem *addr = EXYNOS_SWRESET;
if (of_machine_is_compatible("samsung,exynos5440")) {
u32 status;
@@ -346,6 +273,28 @@ static int __init exynos_fdt_map_chipid(unsigned long node, const char *uname,
*
* register the standard cpu IO areas
*/
+static void __init exynos_map_io(void)
+{
+ if (soc_is_exynos4())
+ iotable_init(exynos4_iodesc, ARRAY_SIZE(exynos4_iodesc));
+
+ if (soc_is_exynos5())
+ iotable_init(exynos5_iodesc, ARRAY_SIZE(exynos5_iodesc));
+
+ if (soc_is_exynos4210()) {
+ if (samsung_rev() == EXYNOS4210_REV_0)
+ iotable_init(exynos4_iodesc0,
+ ARRAY_SIZE(exynos4_iodesc0));
+ else
+ iotable_init(exynos4_iodesc1,
+ ARRAY_SIZE(exynos4_iodesc1));
+ iotable_init(exynos4210_iodesc, ARRAY_SIZE(exynos4210_iodesc));
+ }
+ if (soc_is_exynos4212() || soc_is_exynos4412())
+ iotable_init(exynos4x12_iodesc, ARRAY_SIZE(exynos4x12_iodesc));
+ if (soc_is_exynos5250())
+ iotable_init(exynos5250_iodesc, ARRAY_SIZE(exynos5250_iodesc));
+}
void __init exynos_init_io(void)
{
@@ -356,30 +305,7 @@ void __init exynos_init_io(void)
/* detect cpu id and rev. */
s5p_init_cpu(S5P_VA_CHIPID);
- s3c_init_cpu(samsung_cpu_id, cpu_ids, ARRAY_SIZE(cpu_ids));
-}
-
-static void __init exynos4_map_io(void)
-{
- iotable_init(exynos4_iodesc, ARRAY_SIZE(exynos4_iodesc));
-
- if (soc_is_exynos4210() && samsung_rev() == EXYNOS4210_REV_0)
- iotable_init(exynos4_iodesc0, ARRAY_SIZE(exynos4_iodesc0));
- else
- iotable_init(exynos4_iodesc1, ARRAY_SIZE(exynos4_iodesc1));
-
- if (soc_is_exynos4210())
- iotable_init(exynos4210_iodesc, ARRAY_SIZE(exynos4210_iodesc));
- if (soc_is_exynos4212() || soc_is_exynos4412())
- iotable_init(exynos4x12_iodesc, ARRAY_SIZE(exynos4x12_iodesc));
-}
-
-static void __init exynos5_map_io(void)
-{
- iotable_init(exynos5_iodesc, ARRAY_SIZE(exynos5_iodesc));
-
- if (soc_is_exynos5250())
- iotable_init(exynos5250_iodesc, ARRAY_SIZE(exynos5250_iodesc));
+ exynos_map_io();
}
struct bus_type exynos_subsys = {
@@ -387,10 +313,6 @@ struct bus_type exynos_subsys = {
.dev_name = "exynos-core",
};
-static struct device exynos4_dev = {
- .bus = &exynos_subsys,
-};
-
static int __init exynos_core_init(void)
{
return subsys_system_register(&exynos_subsys, NULL);
@@ -411,9 +333,77 @@ static int __init exynos4_l2x0_cache_init(void)
}
early_initcall(exynos4_l2x0_cache_init);
-static int __init exynos_init(void)
+static void __init exynos_dt_machine_init(void)
{
- printk(KERN_INFO "EXYNOS: Initializing architecture\n");
+ struct device_node *i2c_np;
+ const char *i2c_compat = "samsung,s3c2440-i2c";
+ unsigned int tmp;
+ int id;
+
+ /*
+ * Exynos5's legacy i2c controller and new high speed i2c
+ * controller have muxed interrupt sources. By default the
+ * interrupts for 4-channel HS-I2C controller are enabled.
+ * If node for first four channels of legacy i2c controller
+ * are available then re-configure the interrupts via the
+ * system register.
+ */
+ if (soc_is_exynos5()) {
+ for_each_compatible_node(i2c_np, NULL, i2c_compat) {
+ if (of_device_is_available(i2c_np)) {
+ id = of_alias_get_id(i2c_np, "i2c");
+ if (id < 4) {
+ tmp = readl(EXYNOS5_SYS_I2C_CFG);
+ writel(tmp & ~(0x1 << id),
+ EXYNOS5_SYS_I2C_CFG);
+ }
+ }
+ }
+ }
- return device_register(&exynos4_dev);
+ exynos_cpuidle_init();
+ exynos_cpufreq_init();
+
+ of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
}
+
+static char const *exynos_dt_compat[] __initconst = {
+ "samsung,exynos4",
+ "samsung,exynos4210",
+ "samsung,exynos4212",
+ "samsung,exynos4412",
+ "samsung,exynos5",
+ "samsung,exynos5250",
+ "samsung,exynos5420",
+ "samsung,exynos5440",
+ NULL
+};
+
+static void __init exynos_reserve(void)
+{
+#ifdef CONFIG_S5P_DEV_MFC
+ int i;
+ char *mfc_mem[] = {
+ "samsung,mfc-v5",
+ "samsung,mfc-v6",
+ "samsung,mfc-v7",
+ };
+
+ for (i = 0; i < ARRAY_SIZE(mfc_mem); i++)
+ if (of_scan_flat_dt(s5p_fdt_alloc_mfc_mem, mfc_mem[i]))
+ break;
+#endif
+}
+
+DT_MACHINE_START(EXYNOS_DT, "SAMSUNG EXYNOS (Flattened Device Tree)")
+ /* Maintainer: Thomas Abraham <thomas.abraham@linaro.org> */
+ /* Maintainer: Kukjin Kim <kgene.kim@samsung.com> */
+ .smp = smp_ops(exynos_smp_ops),
+ .map_io = exynos_init_io,
+ .init_early = exynos_firmware_init,
+ .init_machine = exynos_dt_machine_init,
+ .init_late = exynos_init_late,
+ .dt_compat = exynos_dt_compat,
+ .restart = exynos_restart,
+ .reserve = exynos_reserve,
+MACHINE_END
diff --git a/arch/arm/mach-exynos/mach-exynos4-dt.c b/arch/arm/mach-exynos/mach-exynos4-dt.c
deleted file mode 100644
index d3e54b7644d7..000000000000
--- a/arch/arm/mach-exynos/mach-exynos4-dt.c
+++ /dev/null
@@ -1,59 +0,0 @@
-/*
- * Samsung's EXYNOS4 flattened device tree enabled machine
- *
- * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
- * http://www.samsung.com
- * Copyright (c) 2010-2011 Linaro Ltd.
- * www.linaro.org
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
-
-#include <linux/of_platform.h>
-#include <linux/of_fdt.h>
-
-#include <asm/mach/arch.h>
-#include <plat/mfc.h>
-
-#include "common.h"
-
-static void __init exynos4_dt_machine_init(void)
-{
- exynos_cpuidle_init();
- exynos_cpufreq_init();
-
- of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
-}
-
-static char const *exynos4_dt_compat[] __initdata = {
- "samsung,exynos4210",
- "samsung,exynos4212",
- "samsung,exynos4412",
- NULL
-};
-
-static void __init exynos4_reserve(void)
-{
-#ifdef CONFIG_S5P_DEV_MFC
- struct s5p_mfc_dt_meminfo mfc_mem;
-
- /* Reserve memory for MFC only if it's available */
- mfc_mem.compatible = "samsung,mfc-v5";
- if (of_scan_flat_dt(s5p_fdt_find_mfc_mem, &mfc_mem))
- s5p_mfc_reserve_mem(mfc_mem.roff, mfc_mem.rsize, mfc_mem.loff,
- mfc_mem.lsize);
-#endif
-}
-DT_MACHINE_START(EXYNOS4210_DT, "Samsung Exynos4 (Flattened Device Tree)")
- /* Maintainer: Thomas Abraham <thomas.abraham@linaro.org> */
- .smp = smp_ops(exynos_smp_ops),
- .map_io = exynos_init_io,
- .init_early = exynos_firmware_init,
- .init_machine = exynos4_dt_machine_init,
- .init_late = exynos_init_late,
- .dt_compat = exynos4_dt_compat,
- .restart = exynos4_restart,
- .reserve = exynos4_reserve,
-MACHINE_END
diff --git a/arch/arm/mach-exynos/mach-exynos5-dt.c b/arch/arm/mach-exynos/mach-exynos5-dt.c
deleted file mode 100644
index 37ea261f0f6c..000000000000
--- a/arch/arm/mach-exynos/mach-exynos5-dt.c
+++ /dev/null
@@ -1,81 +0,0 @@
-/*
- * SAMSUNG EXYNOS5250 Flattened Device Tree enabled machine
- *
- * Copyright (c) 2012 Samsung Electronics Co., Ltd.
- * http://www.samsung.com
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
-
-#include <linux/of_platform.h>
-#include <linux/of_fdt.h>
-#include <linux/io.h>
-
-#include <asm/mach/arch.h>
-#include <plat/mfc.h>
-
-#include "common.h"
-#include "regs-pmu.h"
-
-static void __init exynos5_dt_machine_init(void)
-{
- struct device_node *i2c_np;
- const char *i2c_compat = "samsung,s3c2440-i2c";
- unsigned int tmp;
-
- /*
- * Exynos5's legacy i2c controller and new high speed i2c
- * controller have muxed interrupt sources. By default the
- * interrupts for 4-channel HS-I2C controller are enabled.
- * If node for first four channels of legacy i2c controller
- * are available then re-configure the interrupts via the
- * system register.
- */
- for_each_compatible_node(i2c_np, NULL, i2c_compat) {
- if (of_device_is_available(i2c_np)) {
- if (of_alias_get_id(i2c_np, "i2c") < 4) {
- tmp = readl(EXYNOS5_SYS_I2C_CFG);
- writel(tmp & ~(0x1 << of_alias_get_id(i2c_np, "i2c")),
- EXYNOS5_SYS_I2C_CFG);
- }
- }
- }
-
- exynos_cpuidle_init();
- exynos_cpufreq_init();
-
- of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
-}
-
-static char const *exynos5_dt_compat[] __initdata = {
- "samsung,exynos5250",
- "samsung,exynos5420",
- "samsung,exynos5440",
- NULL
-};
-
-static void __init exynos5_reserve(void)
-{
-#ifdef CONFIG_S5P_DEV_MFC
- struct s5p_mfc_dt_meminfo mfc_mem;
-
- /* Reserve memory for MFC only if it's available */
- mfc_mem.compatible = "samsung,mfc-v6";
- if (of_scan_flat_dt(s5p_fdt_find_mfc_mem, &mfc_mem))
- s5p_mfc_reserve_mem(mfc_mem.roff, mfc_mem.rsize, mfc_mem.loff,
- mfc_mem.lsize);
-#endif
-}
-
-DT_MACHINE_START(EXYNOS5_DT, "SAMSUNG EXYNOS5 (Flattened Device Tree)")
- /* Maintainer: Kukjin Kim <kgene.kim@samsung.com> */
- .smp = smp_ops(exynos_smp_ops),
- .map_io = exynos_init_io,
- .init_machine = exynos5_dt_machine_init,
- .init_late = exynos_init_late,
- .dt_compat = exynos5_dt_compat,
- .restart = exynos5_restart,
- .reserve = exynos5_reserve,
-MACHINE_END
diff --git a/arch/arm/mach-exynos/mfc.h b/arch/arm/mach-exynos/mfc.h
new file mode 100644
index 000000000000..dec93cd5b3c6
--- /dev/null
+++ b/arch/arm/mach-exynos/mfc.h
@@ -0,0 +1,16 @@
+/*
+ * Copyright (C) 2013 Samsung Electronics Co.Ltd
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#ifndef __MACH_EXYNOS_MFC_H
+#define __MACH_EXYNOS_MFC_H __FILE__
+
+int __init s5p_fdt_alloc_mfc_mem(unsigned long node, const char *uname,
+ int depth, void *data);
+
+#endif /* __MACH_EXYNOS_MFC_H */
diff --git a/arch/arm/mach-exynos/regs-pmu.h b/arch/arm/mach-exynos/regs-pmu.h
index 2c15a8fbcb5a..4f6a2560d022 100644
--- a/arch/arm/mach-exynos/regs-pmu.h
+++ b/arch/arm/mach-exynos/regs-pmu.h
@@ -26,7 +26,6 @@
#define S5P_USE_STANDBY_WFI0 (1 << 16)
#define S5P_USE_STANDBY_WFE0 (1 << 24)
-#define S5P_SWRESET S5P_PMUREG(0x0400)
#define EXYNOS_SWRESET S5P_PMUREG(0x0400)
#define EXYNOS5440_SWRESET S5P_PMUREG(0x00C4)