diff options
Diffstat (limited to 'arch/arm/mach-integrator/integrator_ap.c')
| -rw-r--r-- | arch/arm/mach-integrator/integrator_ap.c | 57 |
1 files changed, 55 insertions, 2 deletions
diff --git a/arch/arm/mach-integrator/integrator_ap.c b/arch/arm/mach-integrator/integrator_ap.c index e6617c1..7d84080 100644 --- a/arch/arm/mach-integrator/integrator_ap.c +++ b/arch/arm/mach-integrator/integrator_ap.c @@ -37,6 +37,8 @@ #include <linux/of_irq.h> #include <linux/of_address.h> #include <linux/of_platform.h> +#include <linux/stat.h> +#include <linux/sys_soc.h> #include <video/vga.h> #include <mach/hardware.h> @@ -462,13 +464,64 @@ static struct of_dev_auxdata ap_auxdata_lookup[] __initdata = { { /* sentinel */ }, }; +/* Base address to the AP system controller */ +static void __iomem *ap_syscon_base; + static void __init ap_init_of(void) { unsigned long sc_dec; + struct device_node *root; + struct device_node *syscon; + struct device *parent; + struct soc_device *soc_dev; + struct soc_device_attribute *soc_dev_attr; + u32 ap_sc_id; + int err; int i; - of_platform_populate(NULL, of_default_bus_match_table, - ap_auxdata_lookup, NULL); + /* Here we create an SoC device for the root node */ + root = of_find_node_by_path("/"); + if (!root) + return; + syscon = of_find_node_by_path("/syscon"); + if (!syscon) + return; + + ap_syscon_base = of_iomap(syscon, 0); + if (!ap_syscon_base) + return; + + ap_sc_id = readl(ap_syscon_base); + + soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL); + if (!soc_dev_attr) + return; + + err = of_property_read_string(root, "compatible", + &soc_dev_attr->soc_id); + if (err) + return; + err = of_property_read_string(root, "model", &soc_dev_attr->machine); + if (err) + return; + soc_dev_attr->family = "Integrator"; + soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%c", + 'A' + (ap_sc_id & 0x0f)); + + soc_dev = soc_device_register(soc_dev_attr); + if (IS_ERR_OR_NULL(soc_dev)) { + kfree(soc_dev_attr->revision); + kfree(soc_dev_attr); + return; + } + + parent = soc_device_to_device(soc_dev); + + if (!IS_ERR_OR_NULL(parent)) + integrator_init_sysfs(parent, ap_sc_id); + + of_platform_populate(root, of_default_bus_match_table, + ap_auxdata_lookup, parent); sc_dec = readl(VA_SC_BASE + INTEGRATOR_SC_DEC_OFFSET); for (i = 0; i < 4; i++) { |