diff options
| author | Alexander Shiyan <shc_work@mail.ru> | 2014-08-19 16:31:15 +0400 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2014-09-04 21:40:43 +0200 |
| commit | e4e3a37d3316332e02e06188dccf4401611e07b9 (patch) | |
| tree | fe9093e794ced5ac1c2b853dc8840a1ed04c5584 /arch | |
| parent | e917ba44f8775e476079f2c163985eb9f49703e8 (diff) | |
ARM: clps711x: Add SOC BUS support
Add SOC BUS support with CPU family, machine name and unique ID.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arm/mach-clps711x/devices.c | 52 |
2 files changed, 52 insertions, 1 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index c49a775937db..c84817273d86 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -387,6 +387,7 @@ config ARCH_CLPS711X select CPU_ARM720T select GENERIC_CLOCKEVENTS select MFD_SYSCON + select SOC_BUS help Support for Cirrus Logic 711x/721x/731x based boards. diff --git a/arch/arm/mach-clps711x/devices.c b/arch/arm/mach-clps711x/devices.c index 0c689d3a6710..77a9617c216d 100644 --- a/arch/arm/mach-clps711x/devices.c +++ b/arch/arm/mach-clps711x/devices.c @@ -1,7 +1,7 @@ /* * CLPS711X common devices definitions * - * Author: Alexander Shiyan <shc_work@mail.ru>, 2013 + * Author: Alexander Shiyan <shc_work@mail.ru>, 2013-2014 * * 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 @@ -9,8 +9,15 @@ * (at your option) any later version. */ +#include <linux/io.h> +#include <linux/of_fdt.h> #include <linux/platform_device.h> +#include <linux/random.h> #include <linux/sizes.h> +#include <linux/slab.h> +#include <linux/sys_soc.h> + +#include <asm/system_info.h> #include <mach/hardware.h> @@ -90,10 +97,53 @@ static void __init clps711x_add_uart(void) ARRAY_SIZE(clps711x_uart2_res)); }; +static void __init clps711x_soc_init(void) +{ + struct soc_device_attribute *soc_dev_attr; + struct soc_device *soc_dev; + void __iomem *base; + u32 id[5]; + + base = ioremap(CLPS711X_PHYS_BASE, SZ_32K); + if (!base) + return; + + id[0] = readl(base + UNIQID); + id[1] = readl(base + RANDID0); + id[2] = readl(base + RANDID1); + id[3] = readl(base + RANDID2); + id[4] = readl(base + RANDID3); + system_rev = SYSFLG1_VERID(readl(base + SYSFLG1)); + + add_device_randomness(id, sizeof(id)); + + system_serial_low = id[0]; + + soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL); + if (!soc_dev_attr) + goto out_unmap; + + soc_dev_attr->machine = of_flat_dt_get_machine_name(); + soc_dev_attr->family = "Cirrus Logic CLPS711X"; + soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%u", system_rev); + soc_dev_attr->soc_id = kasprintf(GFP_KERNEL, "%08x", id[0]); + + soc_dev = soc_device_register(soc_dev_attr); + if (IS_ERR(soc_dev)) { + kfree(soc_dev_attr->revision); + kfree(soc_dev_attr->soc_id); + kfree(soc_dev_attr); + } + +out_unmap: + iounmap(base); +} + void __init clps711x_devices_init(void) { clps711x_add_cpuidle(); clps711x_add_gpio(); clps711x_add_syscon(); clps711x_add_uart(); + clps711x_soc_init(); } |