8 files changed, 212 insertions, 3 deletions

diff --git a/arch/ppc/syslib/ppc_sys.c b/arch/ppc/syslib/ppc_sys.c
index c0b93c4191ee..879783a41cfd 100644
--- a/arch/ppc/syslib/ppc_sys.c
+++ b/arch/ppc/syslib/ppc_sys.c
@@ -15,11 +15,22 @@
  */
 
 #include <linux/string.h>
+#include <linux/bootmem.h>
 #include <asm/ppc_sys.h>
 
 int (*ppc_sys_device_fixup) (struct platform_device * pdev);
 
 static int ppc_sys_inited;
+static int ppc_sys_func_inited;
+
+static const char *ppc_sys_func_names[] = {
+        [PPC_SYS_FUNC_DUMMY] = "dummy",
+        [PPC_SYS_FUNC_ETH] = "eth",
+        [PPC_SYS_FUNC_UART] = "uart",
+        [PPC_SYS_FUNC_HLDC] = "hldc",
+        [PPC_SYS_FUNC_USB] = "usb",
+        [PPC_SYS_FUNC_IRDA] = "irda",
+};
 
 void __init identify_ppc_sys_by_id(u32 id)
 {
@@ -38,13 +49,13 @@ void __init identify_ppc_sys_by_id(u32 id)
 void __init identify_ppc_sys_by_name(char *name)
 {
         unsigned int i = 0;
-        while (ppc_sys_specs[i].ppc_sys_name[0])
-        {
+        while (ppc_sys_specs[i].ppc_sys_name[0]) {
                 if (!strcmp(ppc_sys_specs[i].ppc_sys_name, name))
                         break;
                 i++;
         }
         cur_ppc_sys_spec = &ppc_sys_specs[i];
+
         return;
 }
 
@@ -128,6 +139,165 @@ void ppc_sys_device_remove(enum ppc_sys_devices dev)
         }
 }
 
+/* Platform-notify mapping
+ * Helper function for BSP code to assign board-specific platfom-divice bits
+ */
+
+void platform_notify_map(const struct platform_notify_dev_map *map,
+                         struct device *dev)
+{
+        struct platform_device *pdev;
+        int len, idx;
+        const char *s;
+
+        /* do nothing if no device or no bus_id */
+        if (!dev || !dev->bus_id)
+                return;
+
+        /* call per device map */
+        while (map->bus_id != NULL) {
+                idx = -1;
+                s = strrchr(dev->bus_id, '.');
+                if (s != NULL)
+                        idx = (int)simple_strtol(s + 1, NULL, 10);
+                else
+                        s = dev->bus_id;
+
+                len = s - dev->bus_id;
+
+                if (!strncmp(dev->bus_id, map->bus_id, len)) {
+                        pdev = container_of(dev, struct platform_device, dev);
+                        map->rtn(pdev, idx);
+                }
+                map++;
+        }
+}
+
+/*
+   Function assignment stuff.
+ Intended to work as follows:
+ the device name defined in foo_devices.c will be concatenated with :"func",
+ where func is string map of respective function from platfom_device_func enum
+
+ The PPC_SYS_FUNC_DUMMY function is intended to remove all assignments, making the device to appear
+ in platform bus with unmodified name.
+ */
+
+/*
+   Here we'll replace .name pointers with fixed-lenght strings
+   Hereby, this should be called *before* any func stuff triggeded.
+ */
+void ppc_sys_device_initfunc(void)
+{
+        int i;
+        const char *name;
+        static char new_names[NUM_PPC_SYS_DEVS][BUS_ID_SIZE];
+        enum ppc_sys_devices cur_dev;
+
+        /* If inited yet, do nothing */
+        if (ppc_sys_func_inited)
+                return;
+
+        for (i = 0; i < cur_ppc_sys_spec->num_devices; i++) {
+                if ((cur_dev = cur_ppc_sys_spec->device_list[i]) < 0)
+                        continue;
+
+                if (ppc_sys_platform_devices[cur_dev].name) {
+                        /*backup name */
+                        name = ppc_sys_platform_devices[cur_dev].name;
+                        strlcpy(new_names[i], name, BUS_ID_SIZE);
+                        ppc_sys_platform_devices[cur_dev].name = new_names[i];
+                }
+        }
+
+        ppc_sys_func_inited = 1;
+}
+
+/*The "engine" of the func stuff. Here we either concat specified function string description
+ to the name, or remove it if PPC_SYS_FUNC_DUMMY parameter is passed here*/
+void ppc_sys_device_setfunc(enum ppc_sys_devices dev,
+                            enum platform_device_func func)
+{
+        char *s;
+        char *name = (char *)ppc_sys_platform_devices[dev].name;
+        char tmp[BUS_ID_SIZE];
+
+        if (!ppc_sys_func_inited) {
+                printk(KERN_ERR "Unable to alter function - not inited!\n");
+                return;
+        }
+
+        if (ppc_sys_inited) {
+                platform_device_unregister(&ppc_sys_platform_devices[dev]);
+        }
+
+        if ((s = (char *)strchr(name, ':')) != NULL) {  /* reassign */
+                /* Either change the name after ':' or remove func modifications */
+                if (func != PPC_SYS_FUNC_DUMMY)
+                        strlcpy(s + 1, ppc_sys_func_names[func], BUS_ID_SIZE);
+                else
+                        *s = 0;
+        } else if (func != PPC_SYS_FUNC_DUMMY) {
+                /* do assignment if it is not just "clear"  request */
+                sprintf(tmp, "%s:%s", name, ppc_sys_func_names[func]);
+                strlcpy(name, tmp, BUS_ID_SIZE);
+        }
+
+        if (ppc_sys_inited) {
+                platform_device_register(&ppc_sys_platform_devices[dev]);
+        }
+}
+
+void ppc_sys_device_disable(enum ppc_sys_devices dev)
+{
+        BUG_ON(cur_ppc_sys_spec == NULL);
+
+        /*Check if it is enabled*/
+        if(!(cur_ppc_sys_spec->config[dev] & PPC_SYS_CONFIG_DISABLED)) {
+                if (ppc_sys_inited) {
+                        platform_device_unregister(&ppc_sys_platform_devices[dev]);
+                }
+                cur_ppc_sys_spec->config[dev] |= PPC_SYS_CONFIG_DISABLED;
+        }
+}
+
+void ppc_sys_device_enable(enum ppc_sys_devices dev)
+{
+        BUG_ON(cur_ppc_sys_spec == NULL);
+
+        /*Check if it is disabled*/
+        if(cur_ppc_sys_spec->config[dev] & PPC_SYS_CONFIG_DISABLED) {
+                if (ppc_sys_inited) {
+                        platform_device_register(&ppc_sys_platform_devices[dev]);
+                }
+                cur_ppc_sys_spec->config[dev] &= ~PPC_SYS_CONFIG_DISABLED;
+        }
+
+}
+
+void ppc_sys_device_enable_all(void)
+{
+        enum ppc_sys_devices cur_dev;
+        int i;
+
+        for (i = 0; i < cur_ppc_sys_spec->num_devices; i++) {
+                cur_dev = cur_ppc_sys_spec->device_list[i];
+                ppc_sys_device_enable(cur_dev);
+        }
+}
+
+void ppc_sys_device_disable_all(void)
+{
+        enum ppc_sys_devices cur_dev;
+        int i;
+
+        for (i = 0; i < cur_ppc_sys_spec->num_devices; i++) {
+                cur_dev = cur_ppc_sys_spec->device_list[i];
+                ppc_sys_device_disable(cur_dev);
+        }
+}
+
+
 static int __init ppc_sys_init(void)
 {
         unsigned int i, dev_id, ret = 0;
@@ -136,7 +306,8 @@ static int __init ppc_sys_init(void)
 
         for (i = 0; i < cur_ppc_sys_spec->num_devices; i++) {
                 dev_id = cur_ppc_sys_spec->device_list[i];
-                if (dev_id != -1) {
+                if ((dev_id != -1) &&
+                !(cur_ppc_sys_spec->config[dev_id] & PPC_SYS_CONFIG_DISABLED)) {
                         if (ppc_sys_device_fixup != NULL)
                                 ppc_sys_device_fixup(&ppc_sys_platform_devices
                                                      [dev_id]);
diff --git a/include/asm-ppc/mpc10x.h b/include/asm-ppc/mpc10x.h
index 77b1e092c206..976ad3d94f27 100644
--- a/include/asm-ppc/mpc10x.h
+++ b/include/asm-ppc/mpc10x.h
@@ -165,6 +165,7 @@ enum ppc_sys_devices {
         MPC10X_DMA1,
         MPC10X_UART0,
         MPC10X_UART1,
+        NUM_PPC_SYS_DEVS,
 };
 
 int mpc10x_bridge_init(struct pci_controller *hose,
diff --git a/include/asm-ppc/mpc52xx.h b/include/asm-ppc/mpc52xx.h
index a055e0756b9d..6167f74635f7 100644
--- a/include/asm-ppc/mpc52xx.h
+++ b/include/asm-ppc/mpc52xx.h
@@ -60,6 +60,7 @@ enum ppc_sys_devices {
         MPC52xx_ATA,
         MPC52xx_I2C1,
         MPC52xx_I2C2,
+        NUM_PPC_SYS_DEVS,
 };
 
 
diff --git a/include/asm-ppc/mpc8260.h b/include/asm-ppc/mpc8260.h
index 321452695039..6ba69a86b9dd 100644
--- a/include/asm-ppc/mpc8260.h
+++ b/include/asm-ppc/mpc8260.h
@@ -83,6 +83,7 @@ enum ppc_sys_devices {
         MPC82xx_CPM_SMC2,
         MPC82xx_CPM_USB,
         MPC82xx_SEC1,
+        NUM_PPC_SYS_DEVS,
 };
 
 #ifndef __ASSEMBLY__
diff --git a/include/asm-ppc/mpc83xx.h b/include/asm-ppc/mpc83xx.h
index 7cdf60fa69b6..3c23fc43bfbc 100644
--- a/include/asm-ppc/mpc83xx.h
+++ b/include/asm-ppc/mpc83xx.h
@@ -108,6 +108,7 @@ enum ppc_sys_devices {
         MPC83xx_USB2_DR,
         MPC83xx_USB2_MPH,
         MPC83xx_MDIO,
+        NUM_PPC_SYS_DEVS,
 };
 
 #endif /* CONFIG_83xx */
diff --git a/include/asm-ppc/mpc85xx.h b/include/asm-ppc/mpc85xx.h
index c8a96aa44fb7..f47002a60edf 100644
--- a/include/asm-ppc/mpc85xx.h
+++ b/include/asm-ppc/mpc85xx.h
@@ -139,6 +139,7 @@ enum ppc_sys_devices {
         MPC85xx_eTSEC4,
         MPC85xx_IIC2,
         MPC85xx_MDIO,
+        NUM_PPC_SYS_DEVS,
 };
 
 /* Internal interrupts are all Level Sensitive, and Positive Polarity */
diff --git a/include/asm-ppc/mpc8xx.h b/include/asm-ppc/mpc8xx.h
index 73ec9a6db0b1..3515a7fa6c89 100644
--- a/include/asm-ppc/mpc8xx.h
+++ b/include/asm-ppc/mpc8xx.h
@@ -111,6 +111,7 @@ enum ppc_sys_devices {
         MPC8xx_CPM_SMC1,
         MPC8xx_CPM_SMC2,
         MPC8xx_CPM_USB,
+        NUM_PPC_SYS_DEVS,
 };
 
 #define PPC_PIN_SIZE    (24 * 1024 * 1024)      /* 24Mbytes of data pinned */
diff --git a/include/asm-ppc/ppc_sys.h b/include/asm-ppc/ppc_sys.h
index bdc4dde35edd..4b94f7059ebe 100644
--- a/include/asm-ppc/ppc_sys.h
+++ b/include/asm-ppc/ppc_sys.h
@@ -46,9 +46,26 @@ struct ppc_sys_spec {
         u32                     value;
         u32                     num_devices;
         char                    *ppc_sys_name;
+        u8                      config[NUM_PPC_SYS_DEVS];
         enum ppc_sys_devices    *device_list;
 };
 
+struct platform_notify_dev_map {
+        const char *bus_id;
+        void (*rtn)(struct platform_device * pdev, int idx);
+};
+
+enum platform_device_func {
+        PPC_SYS_FUNC_DUMMY = 0,
+        PPC_SYS_FUNC_ETH = 1,
+        PPC_SYS_FUNC_UART = 2,
+        PPC_SYS_FUNC_HLDC = 3,
+        PPC_SYS_FUNC_USB = 4,
+        PPC_SYS_FUNC_IRDA = 5,
+};
+
+#define PPC_SYS_CONFIG_DISABLED         1
+
 /* describes all specific chips and which devices they have on them */
 extern struct ppc_sys_spec ppc_sys_specs[];
 extern struct ppc_sys_spec *cur_ppc_sys_spec;
@@ -74,5 +91,20 @@ extern void *ppc_sys_get_pdata(enum ppc_sys_devices dev) __init;
 /* remove a device from the system */
 extern void ppc_sys_device_remove(enum ppc_sys_devices dev);
 
+/* Function assignment stuff */
+void ppc_sys_device_initfunc(void);
+void ppc_sys_device_setfunc(enum ppc_sys_devices dev,
+                            enum platform_device_func func);
+void ppc_sys_device_set_func_all(enum platform_device_func func);
+
+void platform_notify_map(const struct platform_notify_dev_map *map,
+                         struct device *dev);
+
+/* Enable / disable stuff */
+void ppc_sys_device_disable(enum ppc_sys_devices dev);
+void ppc_sys_device_enable(enum ppc_sys_devices dev);
+void ppc_sys_device_enable_all(void);
+void ppc_sys_device_disable_all(void);
+
 #endif                          /* __ASM_PPC_SYS_H */
 #endif                          /* __KERNEL__ */