[PATCH v4 2/2] ARM: EXYNOS: refactoring of mach-exynos to enable chipid driver

From: Pankaj Dubey
Date: Wed Dec 03 2014 - 03:25:34 EST

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Previous message: Pankaj Dubey: "[PATCH v4 1/2] soc: samsung: add exynos chipid driver support"
In reply to: Arnd Bergmann: "Re: [PATCH v4 1/2] soc: samsung: add exynos chipid driver support"
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This patch enables chipid driver for ARCH_EXYNOS and refactors
machine code for using chipid driver for identification of
SoC ID and SoC rev.

Signed-off-by: Pankaj Dubey <pankaj.dubey@xxxxxxxxxxx>
---
arch/arm/mach-exynos/Kconfig | 2 +
arch/arm/mach-exynos/common.h | 46 ++++-----------
arch/arm/mach-exynos/exynos.c | 77 +++++++++++---------------
arch/arm/mach-exynos/include/mach/map.h | 2 -
arch/arm/mach-exynos/platsmp.c | 2 +-
arch/arm/mach-exynos/pm.c | 8 +--
arch/arm/plat-samsung/cpu.c | 14 -----
arch/arm/plat-samsung/include/plat/cpu.h | 2 -
arch/arm/plat-samsung/include/plat/map-s5p.h | 1 -
9 files changed, 50 insertions(+), 104 deletions(-)

diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig
index b9e3f1c..dd656a4 100644
--- a/arch/arm/mach-exynos/Kconfig
+++ b/arch/arm/mach-exynos/Kconfig
@@ -25,6 +25,8 @@ menuconfig ARCH_EXYNOS
select S5P_DEV_MFC
select SRAM
select MFD_SYSCON
+ select SOC_SAMSUNG
+ select EXYNOS_CHIPID
help
Support for SAMSUNG EXYNOS SoCs (EXYNOS4/5)

diff --git a/arch/arm/mach-exynos/common.h b/arch/arm/mach-exynos/common.h
index 865f878..52fb23a 100644
--- a/arch/arm/mach-exynos/common.h
+++ b/arch/arm/mach-exynos/common.h
@@ -13,39 +13,24 @@
#define __ARCH_ARM_MACH_EXYNOS_COMMON_H

#include <linux/of.h>
-
-#define EXYNOS3250_SOC_ID 0xE3472000
-#define EXYNOS3_SOC_MASK 0xFFFFF000
-
-#define EXYNOS4210_CPU_ID 0x43210000
-#define EXYNOS4212_CPU_ID 0x43220000
-#define EXYNOS4412_CPU_ID 0xE4412200
-#define EXYNOS4_CPU_MASK 0xFFFE0000
-
-#define EXYNOS5250_SOC_ID 0x43520000
-#define EXYNOS5410_SOC_ID 0xE5410000
-#define EXYNOS5420_SOC_ID 0xE5420000
-#define EXYNOS5440_SOC_ID 0xE5440000
-#define EXYNOS5800_SOC_ID 0xE5422000
-#define EXYNOS5_SOC_MASK 0xFFFFF000
-
-extern unsigned long samsung_cpu_id;
+#include <linux/soc/samsung/exynos-soc.h>

#define IS_SAMSUNG_CPU(name, id, mask) \
static inline int is_samsung_##name(void) \
{ \
- return ((samsung_cpu_id & mask) == (id & mask)); \
+ int product_id = exynos_product_id(); \
+ return ((product_id & mask) == (id)); \
}

-IS_SAMSUNG_CPU(exynos3250, EXYNOS3250_SOC_ID, EXYNOS3_SOC_MASK)
-IS_SAMSUNG_CPU(exynos4210, EXYNOS4210_CPU_ID, EXYNOS4_CPU_MASK)
-IS_SAMSUNG_CPU(exynos4212, EXYNOS4212_CPU_ID, EXYNOS4_CPU_MASK)
-IS_SAMSUNG_CPU(exynos4412, EXYNOS4412_CPU_ID, EXYNOS4_CPU_MASK)
-IS_SAMSUNG_CPU(exynos5250, EXYNOS5250_SOC_ID, EXYNOS5_SOC_MASK)
-IS_SAMSUNG_CPU(exynos5410, EXYNOS5410_SOC_ID, EXYNOS5_SOC_MASK)
-IS_SAMSUNG_CPU(exynos5420, EXYNOS5420_SOC_ID, EXYNOS5_SOC_MASK)
-IS_SAMSUNG_CPU(exynos5440, EXYNOS5440_SOC_ID, EXYNOS5_SOC_MASK)
-IS_SAMSUNG_CPU(exynos5800, EXYNOS5800_SOC_ID, EXYNOS5_SOC_MASK)
+IS_SAMSUNG_CPU(exynos3250, EXYNOS3250_SOC_ID, EXYNOS_SOC_MASK)
+IS_SAMSUNG_CPU(exynos4210, EXYNOS4210_SOC_ID, EXYNOS_SOC_MASK)
+IS_SAMSUNG_CPU(exynos4212, EXYNOS4212_SOC_ID, EXYNOS_SOC_MASK)
+IS_SAMSUNG_CPU(exynos4412, EXYNOS4412_SOC_ID, EXYNOS_SOC_MASK)
+IS_SAMSUNG_CPU(exynos5250, EXYNOS5250_SOC_ID, EXYNOS_SOC_MASK)
+IS_SAMSUNG_CPU(exynos5410, EXYNOS5410_SOC_ID, EXYNOS_SOC_MASK)
+IS_SAMSUNG_CPU(exynos5420, EXYNOS5420_SOC_ID, EXYNOS_SOC_MASK)
+IS_SAMSUNG_CPU(exynos5440, EXYNOS5440_SOC_ID, EXYNOS_SOC_MASK)
+IS_SAMSUNG_CPU(exynos5800, EXYNOS5800_SOC_ID, EXYNOS_SOC_MASK)

#if defined(CONFIG_SOC_EXYNOS3250)
# define soc_is_exynos3250() is_samsung_exynos3250()
@@ -71,10 +56,6 @@ IS_SAMSUNG_CPU(exynos5800, EXYNOS5800_SOC_ID, EXYNOS5_SOC_MASK)
# define soc_is_exynos4412() 0
#endif

-#define EXYNOS4210_REV_0 (0x0)
-#define EXYNOS4210_REV_1_0 (0x10)
-#define EXYNOS4210_REV_1_1 (0x11)
-
#if defined(CONFIG_SOC_EXYNOS5250)
# define soc_is_exynos5250() is_samsung_exynos5250()
#else
@@ -150,9 +131,6 @@ extern void exynos_pm_central_suspend(void);
extern int exynos_pm_central_resume(void);
extern void exynos_enter_aftr(void);

-extern void s5p_init_cpu(void __iomem *cpuid_addr);
-extern unsigned int samsung_rev(void);
-
static inline void pmu_raw_writel(u32 val, u32 offset)
{
__raw_writel(val, pmu_base_addr + offset);
diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c
index c13d083..e2a640b 100644
--- a/arch/arm/mach-exynos/exynos.c
+++ b/arch/arm/mach-exynos/exynos.c
@@ -126,53 +126,16 @@ static void __init exynos_init_late(void)
exynos_pm_init();
}

-static int __init exynos_fdt_map_chipid(unsigned long node, const char *uname,
- int depth, void *data)
+static void __init exynos4_init_io(void)
{
- struct map_desc iodesc;
- const __be32 *reg;
- int len;
-
- if (!of_flat_dt_is_compatible(node, "samsung,exynos4210-chipid") &&
- !of_flat_dt_is_compatible(node, "samsung,exynos5440-clock"))
- return 0;
-
- reg = of_get_flat_dt_prop(node, "reg", &len);
- if (reg == NULL || len != (sizeof(unsigned long) * 2))
- return 0;
-
- iodesc.pfn = __phys_to_pfn(be32_to_cpu(reg[0]));
- iodesc.length = be32_to_cpu(reg[1]) - 1;
- iodesc.virtual = (unsigned long)S5P_VA_CHIPID;
- iodesc.type = MT_DEVICE;
- iotable_init(&iodesc, 1);
- return 1;
-}
-
-/*
- * exynos_map_io
- *
- * 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));
+ debug_ll_io_init();
+ iotable_init(exynos4_iodesc, ARRAY_SIZE(exynos4_iodesc));
}

-static void __init exynos_init_io(void)
+static void __init exynos5_init_io(void)
{
debug_ll_io_init();
-
- of_scan_flat_dt(exynos_fdt_map_chipid, NULL);
-
- /* detect cpu id and rev. */
- s5p_init_cpu(S5P_VA_CHIPID);
-
- exynos_map_io();
+ iotable_init(exynos5_iodesc, ARRAY_SIZE(exynos5_iodesc));
}

static const struct of_device_id exynos_dt_pmu_match[] = {
@@ -209,6 +172,8 @@ static void __init exynos_init_irq(void)
* init_irq
*/
exynos_map_pmu();
+
+ exynos_chipid_early_init(NULL);
}

static void __init exynos_dt_machine_init(void)
@@ -258,7 +223,7 @@ static void __init exynos_dt_machine_init(void)
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
}

-static char const *exynos_dt_compat[] __initconst = {
+static char const *exynos4_dt_compat[] __initconst = {
"samsung,exynos3",
"samsung,exynos3250",
"samsung,exynos4",
@@ -266,6 +231,10 @@ static char const *exynos_dt_compat[] __initconst = {
"samsung,exynos4212",
"samsung,exynos4412",
"samsung,exynos4415",
+ NULL
+};
+
+static char const *exynos5_dt_compat[] __initconst = {
"samsung,exynos5",
"samsung,exynos5250",
"samsung,exynos5260",
@@ -299,18 +268,34 @@ static void __init exynos_dt_fixup(void)
of_fdt_limit_memory(8);
}

-DT_MACHINE_START(EXYNOS_DT, "SAMSUNG EXYNOS (Flattened Device Tree)")
+DT_MACHINE_START(EXYNOS4_DT, "SAMSUNG EXYNOS4 (Flattened Device Tree)")
+ /* Maintainer: Thomas Abraham <thomas.abraham@xxxxxxxxxx> */
+ /* Maintainer: Kukjin Kim <kgene.kim@xxxxxxxxxxx> */
+ .l2c_aux_val = 0x3c400001,
+ .l2c_aux_mask = 0xc20fffff,
+ .smp = smp_ops(exynos_smp_ops),
+ .map_io = exynos4_init_io,
+ .init_early = exynos_firmware_init,
+ .init_irq = exynos_init_irq,
+ .init_machine = exynos_dt_machine_init,
+ .init_late = exynos_init_late,
+ .dt_compat = exynos4_dt_compat,
+ .reserve = exynos_reserve,
+ .dt_fixup = exynos_dt_fixup,
+MACHINE_END
+
+DT_MACHINE_START(EXYNOS5_DT, "SAMSUNG EXYNOS5 (Flattened Device Tree)")
/* Maintainer: Thomas Abraham <thomas.abraham@xxxxxxxxxx> */
/* Maintainer: Kukjin Kim <kgene.kim@xxxxxxxxxxx> */
.l2c_aux_val = 0x3c400001,
.l2c_aux_mask = 0xc20fffff,
.smp = smp_ops(exynos_smp_ops),
- .map_io = exynos_init_io,
+ .map_io = exynos5_init_io,
.init_early = exynos_firmware_init,
.init_irq = exynos_init_irq,
.init_machine = exynos_dt_machine_init,
.init_late = exynos_init_late,
- .dt_compat = exynos_dt_compat,
+ .dt_compat = exynos5_dt_compat,
.reserve = exynos_reserve,
.dt_fixup = exynos_dt_fixup,
MACHINE_END
diff --git a/arch/arm/mach-exynos/include/mach/map.h b/arch/arm/mach-exynos/include/mach/map.h
index 1ad3f49..2e1c115 100644
--- a/arch/arm/mach-exynos/include/mach/map.h
+++ b/arch/arm/mach-exynos/include/mach/map.h
@@ -22,8 +22,6 @@

#include <plat/map-s5p.h>

-#define EXYNOS_PA_CHIPID 0x10000000
-
#define EXYNOS4_PA_SYSCON 0x10010000
#define EXYNOS5_PA_SYSCON 0x10050100

diff --git a/arch/arm/mach-exynos/platsmp.c b/arch/arm/mach-exynos/platsmp.c
index 7a1ebfe..5c318c3 100644
--- a/arch/arm/mach-exynos/platsmp.c
+++ b/arch/arm/mach-exynos/platsmp.c
@@ -196,7 +196,7 @@ int exynos_cluster_power_state(int cluster)

static inline void __iomem *cpu_boot_reg_base(void)
{
- if (soc_is_exynos4210() && samsung_rev() == EXYNOS4210_REV_1_1)
+ if (soc_is_exynos4210() && exynos_revision() == EXYNOS4210_REV_1_1)
return pmu_base_addr + S5P_INFORM5;
return sysram_base_addr;
}
diff --git a/arch/arm/mach-exynos/pm.c b/arch/arm/mach-exynos/pm.c
index 86f3ecd..d694190 100644
--- a/arch/arm/mach-exynos/pm.c
+++ b/arch/arm/mach-exynos/pm.c
@@ -32,18 +32,18 @@

static inline void __iomem *exynos_boot_vector_addr(void)
{
- if (samsung_rev() == EXYNOS4210_REV_1_1)
+ if (exynos_revision() == EXYNOS4210_REV_1_1)
return pmu_base_addr + S5P_INFORM7;
- else if (samsung_rev() == EXYNOS4210_REV_1_0)
+ else if (exynos_revision() == EXYNOS4210_REV_1_0)
return sysram_base_addr + 0x24;
return pmu_base_addr + S5P_INFORM0;
}

static inline void __iomem *exynos_boot_vector_flag(void)
{
- if (samsung_rev() == EXYNOS4210_REV_1_1)
+ if (exynos_revision() == EXYNOS4210_REV_1_1)
return pmu_base_addr + S5P_INFORM6;
- else if (samsung_rev() == EXYNOS4210_REV_1_0)
+ else if (exynos_revision() == EXYNOS4210_REV_1_0)
return sysram_base_addr + 0x20;
return pmu_base_addr + S5P_INFORM1;
}
diff --git a/arch/arm/plat-samsung/cpu.c b/arch/arm/plat-samsung/cpu.c
index 71333bb..02d95fd 100644
--- a/arch/arm/plat-samsung/cpu.c
+++ b/arch/arm/plat-samsung/cpu.c
@@ -21,12 +21,6 @@
unsigned long samsung_cpu_id;
static unsigned int samsung_cpu_rev;

-unsigned int samsung_rev(void)
-{
- return samsung_cpu_rev;
-}
-EXPORT_SYMBOL(samsung_rev);
-
void __init s3c64xx_init_cpu(void)
{
samsung_cpu_id = __raw_readl(S3C_VA_SYS + 0x118);
@@ -43,11 +37,3 @@ void __init s3c64xx_init_cpu(void)

pr_info("Samsung CPU ID: 0x%08lx\n", samsung_cpu_id);
}
-
-void __init s5p_init_cpu(void __iomem *cpuid_addr)
-{
- samsung_cpu_id = __raw_readl(cpuid_addr);
- samsung_cpu_rev = samsung_cpu_id & 0xFF;
-
- pr_info("Samsung CPU ID: 0x%08lx\n", samsung_cpu_id);
-}
diff --git a/arch/arm/plat-samsung/include/plat/cpu.h b/arch/arm/plat-samsung/include/plat/cpu.h
index 61d14f3..fa7d0d6 100644
--- a/arch/arm/plat-samsung/include/plat/cpu.h
+++ b/arch/arm/plat-samsung/include/plat/cpu.h
@@ -114,8 +114,6 @@ extern void s3c24xx_init_io(struct map_desc *mach_desc, int size);

extern void s3c64xx_init_cpu(void);

-extern unsigned int samsung_rev(void);
-
extern void s3c24xx_init_uarts(struct s3c2410_uartcfg *cfg, int no);

extern void s3c24xx_init_clocks(int xtal);
diff --git a/arch/arm/plat-samsung/include/plat/map-s5p.h b/arch/arm/plat-samsung/include/plat/map-s5p.h
index f5cf2bd..3df015c 100644
--- a/arch/arm/plat-samsung/include/plat/map-s5p.h
+++ b/arch/arm/plat-samsung/include/plat/map-s5p.h
@@ -13,7 +13,6 @@
#ifndef __ASM_PLAT_MAP_S5P_H
#define __ASM_PLAT_MAP_S5P_H __FILE__

-#define S5P_VA_CHIPID S3C_ADDR(0x02000000)
#define S5P_VA_CMU S3C_ADDR(0x02100000)

#define S5P_VA_DMC0 S3C_ADDR(0x02440000)
--
1.7.9.5

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Next message: Stephen Rothwell: "Re: linux-next: manual merge of the drm tree with the drm-intel-fixes tree"
Previous message: Pankaj Dubey: "[PATCH v4 1/2] soc: samsung: add exynos chipid driver support"
In reply to: Arnd Bergmann: "Re: [PATCH v4 1/2] soc: samsung: add exynos chipid driver support"
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