diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/arm/mach-ux500/cpu.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/arm/mach-ux500/cpu.c | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/ANDROID_3.4.5/arch/arm/mach-ux500/cpu.c b/ANDROID_3.4.5/arch/arm/mach-ux500/cpu.c new file mode 100644 index 00000000..d11f3892 --- /dev/null +++ b/ANDROID_3.4.5/arch/arm/mach-ux500/cpu.c @@ -0,0 +1,138 @@ +/* + * Copyright (C) ST-Ericsson SA 2010 + * + * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson + * Author: Lee Jones <lee.jones@linaro.org> for ST-Ericsson + * License terms: GNU General Public License (GPL) version 2 + */ + +#include <linux/platform_device.h> +#include <linux/io.h> +#include <linux/clk.h> +#include <linux/mfd/db8500-prcmu.h> +#include <linux/mfd/db5500-prcmu.h> +#include <linux/clksrc-dbx500-prcmu.h> +#include <linux/sys_soc.h> +#include <linux/err.h> +#include <linux/slab.h> +#include <linux/stat.h> +#include <linux/of.h> +#include <linux/of_irq.h> + +#include <asm/hardware/gic.h> +#include <asm/mach/map.h> + +#include <mach/hardware.h> +#include <mach/setup.h> +#include <mach/devices.h> + +#include "clock.h" + +void __iomem *_PRCMU_BASE; + +static const struct of_device_id ux500_dt_irq_match[] = { + { .compatible = "arm,cortex-a9-gic", .data = gic_of_init, }, + {}, +}; + +void __init ux500_init_irq(void) +{ + void __iomem *dist_base; + void __iomem *cpu_base; + + if (cpu_is_u5500()) { + dist_base = __io_address(U5500_GIC_DIST_BASE); + cpu_base = __io_address(U5500_GIC_CPU_BASE); + } else if (cpu_is_u8500()) { + dist_base = __io_address(U8500_GIC_DIST_BASE); + cpu_base = __io_address(U8500_GIC_CPU_BASE); + } else + ux500_unknown_soc(); + +#ifdef CONFIG_OF + if (of_have_populated_dt()) + of_irq_init(ux500_dt_irq_match); + else +#endif + gic_init(0, 29, dist_base, cpu_base); + + /* + * Init clocks here so that they are available for system timer + * initialization. + */ + if (cpu_is_u5500()) + db5500_prcmu_early_init(); + if (cpu_is_u8500()) + db8500_prcmu_early_init(); + clk_init(); +} + +static const char * __init ux500_get_machine(void) +{ + return kasprintf(GFP_KERNEL, "DB%4x", dbx500_partnumber()); +} + +static const char * __init ux500_get_family(void) +{ + return kasprintf(GFP_KERNEL, "ux500"); +} + +static const char * __init ux500_get_revision(void) +{ + unsigned int rev = dbx500_revision(); + + if (rev == 0x01) + return kasprintf(GFP_KERNEL, "%s", "ED"); + else if (rev >= 0xA0) + return kasprintf(GFP_KERNEL, "%d.%d", + (rev >> 4) - 0xA + 1, rev & 0xf); + + return kasprintf(GFP_KERNEL, "%s", "Unknown"); +} + +static ssize_t ux500_get_process(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + if (dbx500_id.process == 0x00) + return sprintf(buf, "Standard\n"); + + return sprintf(buf, "%02xnm\n", dbx500_id.process); +} + +static void __init soc_info_populate(struct soc_device_attribute *soc_dev_attr, + const char *soc_id) +{ + soc_dev_attr->soc_id = soc_id; + soc_dev_attr->machine = ux500_get_machine(); + soc_dev_attr->family = ux500_get_family(); + soc_dev_attr->revision = ux500_get_revision(); +} + +struct device_attribute ux500_soc_attr = + __ATTR(process, S_IRUGO, ux500_get_process, NULL); + +struct device * __init ux500_soc_device_init(const char *soc_id) +{ + struct device *parent; + struct soc_device *soc_dev; + struct soc_device_attribute *soc_dev_attr; + + soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL); + if (!soc_dev_attr) + return ERR_PTR(-ENOMEM); + + soc_info_populate(soc_dev_attr, soc_id); + + soc_dev = soc_device_register(soc_dev_attr); + if (IS_ERR_OR_NULL(soc_dev)) { + kfree(soc_dev_attr); + return NULL; + } + + parent = soc_device_to_device(soc_dev); + if (!IS_ERR_OR_NULL(parent)) + device_create_file(parent, &ux500_soc_attr); + + return parent; +} |