Merge ../linus

[pandora-kernel.git] / arch / arm / mach-s3c2410 / cpu.c

diff --git a/arch/arm/mach-s3c2410/cpu.c b/arch/arm/mach-s3c2410/cpu.c
index 70c34fc..1c3c6ad 100644 (file)
--- a/arch/arm/mach-s3c2410/cpu.c
+++ b/arch/arm/mach-s3c2410/cpu.c
@@ -37,12 +37,17 @@
 #include <asm/mach/map.h>
 
 #include <asm/arch/regs-gpio.h>
+#include <asm/arch/regs-serial.h>
 
 #include "cpu.h"
+#include "devs.h"
 #include "clock.h"
 #include "s3c2400.h"
 #include "s3c2410.h"
+#include "s3c2412.h"
+#include "s3c244x.h"
 #include "s3c2440.h"
+#include "s3c2442.h"
 
 struct cpu_table {
        unsigned long   idcode;
@@ -58,7 +63,9 @@ struct cpu_table {
 
 static const char name_s3c2400[]  = "S3C2400";
 static const char name_s3c2410[]  = "S3C2410";
+static const char name_s3c2412[]  = "S3C2412";
 static const char name_s3c2440[]  = "S3C2440";
+static const char name_s3c2442[]  = "S3C2442";
 static const char name_s3c2410a[] = "S3C2410A";
 static const char name_s3c2440a[] = "S3C2440A";
 
@@ -84,21 +91,39 @@ static struct cpu_table cpu_ids[] __initdata = {
        {
                .idcode         = 0x32440000,
                .idmask         = 0xffffffff,
-               .map_io         = s3c2440_map_io,
-               .init_clocks    = s3c2440_init_clocks,
-               .init_uarts     = s3c2440_init_uarts,
+               .map_io         = s3c244x_map_io,
+               .init_clocks    = s3c244x_init_clocks,
+               .init_uarts     = s3c244x_init_uarts,
                .init           = s3c2440_init,
                .name           = name_s3c2440
        },
        {
                .idcode         = 0x32440001,
                .idmask         = 0xffffffff,
-               .map_io         = s3c2440_map_io,
-               .init_clocks    = s3c2440_init_clocks,
-               .init_uarts     = s3c2440_init_uarts,
+               .map_io         = s3c244x_map_io,
+               .init_clocks    = s3c244x_init_clocks,
+               .init_uarts     = s3c244x_init_uarts,
                .init           = s3c2440_init,
                .name           = name_s3c2440a
        },
+       {
+               .idcode         = 0x32440aaa,
+               .idmask         = 0xffffffff,
+               .map_io         = s3c244x_map_io,
+               .init_clocks    = s3c244x_init_clocks,
+               .init_uarts     = s3c244x_init_uarts,
+               .init           = s3c2442_init,
+               .name           = name_s3c2442
+       },
+       {
+               .idcode         = 0x32412001,
+               .idmask         = 0xffffffff,
+               .map_io         = s3c2412_map_io,
+               .init_clocks    = s3c2412_init_clocks,
+               .init_uarts     = s3c2412_init_uarts,
+               .init           = s3c2412_init,
+               .name           = name_s3c2412,
+       },
        {
                .idcode         = 0x0,   /* S3C2400 doesn't have an idcode */
                .idmask         = 0xffffffff,
@@ -157,6 +182,24 @@ void s3c24xx_set_board(struct s3c24xx_board *b)
 
 static struct cpu_table *cpu;
 
+static unsigned long s3c24xx_read_idcode_v5(void)
+{
+#if defined(CONFIG_CPU_S3C2412) || defined(CONFIG_CPU_S3C2413)
+       return __raw_readl(S3C2412_GSTATUS1);
+#else
+       return 1UL;     /* don't look like an 2400 */
+#endif
+}
+
+static unsigned long s3c24xx_read_idcode_v4(void)
+{
+#ifndef CONFIG_CPU_S3C2400
+       return __raw_readl(S3C2410_GSTATUS1);
+#else
+       return 0UL;
+#endif
+}
+
 void __init s3c24xx_init_io(struct map_desc *mach_desc, int size)
 {
        unsigned long idcode = 0x0;
@@ -164,9 +207,11 @@ void __init s3c24xx_init_io(struct map_desc *mach_desc, int size)
        /* initialise the io descriptors we need for initialisation */
        iotable_init(s3c_iodesc, ARRAY_SIZE(s3c_iodesc));
 
-#ifndef CONFIG_CPU_S3C2400
-       idcode = __raw_readl(S3C2410_GSTATUS1);
-#endif
+       if (cpu_architecture() >= CPU_ARCH_ARMv5) {
+               idcode = s3c24xx_read_idcode_v5();
+       } else {
+               idcode = s3c24xx_read_idcode_v4();
+       }
 
        cpu = s3c_lookup_cpu(idcode);
 
@@ -175,13 +220,13 @@ void __init s3c24xx_init_io(struct map_desc *mach_desc, int size)
                panic("Unknown S3C24XX CPU");
        }
 
+       printk("CPU %s (id 0x%08lx)\n", cpu->name, idcode);
+
        if (cpu->map_io == NULL || cpu->init == NULL) {
                printk(KERN_ERR "CPU %s support not enabled\n", cpu->name);
                panic("Unsupported S3C24XX CPU");
        }
 
-       printk("CPU %s (id 0x%08lx)\n", cpu->name, idcode);
-
        (cpu->map_io)(mach_desc, size);
 }
 
@@ -208,6 +253,49 @@ void __init s3c24xx_init_clocks(int xtal)
                (cpu->init_clocks)(xtal);
 }
 
+/* uart management */
+
+static int nr_uarts __initdata = 0;
+
+static struct s3c2410_uartcfg uart_cfgs[3];
+
+/* s3c24xx_init_uartdevs
+ *
+ * copy the specified platform data and configuration into our central
+ * set of devices, before the data is thrown away after the init process.
+ *
+ * This also fills in the array passed to the serial driver for the
+ * early initialisation of the console.
+*/
+
+void __init s3c24xx_init_uartdevs(char *name,
+                                 struct s3c24xx_uart_resources *res,
+                                 struct s3c2410_uartcfg *cfg, int no)
+{
+       struct platform_device *platdev;
+       struct s3c2410_uartcfg *cfgptr = uart_cfgs;
+       struct s3c24xx_uart_resources *resp;
+       int uart;
+
+       memcpy(cfgptr, cfg, sizeof(struct s3c2410_uartcfg) * no);
+
+       for (uart = 0; uart < no; uart++, cfg++, cfgptr++) {
+               platdev = s3c24xx_uart_src[cfgptr->hwport];
+
+               resp = res + cfgptr->hwport;
+
+               s3c24xx_uart_devs[uart] = platdev;
+
+               platdev->name = name;
+               platdev->resource = resp->resources;
+               platdev->num_resources = resp->nr_resources;
+
+               platdev->dev.platform_data = cfgptr;
+       }
+
+       nr_uarts = no;
+}
+
 void __init s3c24xx_init_uarts(struct s3c2410_uartcfg *cfg, int no)
 {
        if (cpu == NULL)
@@ -232,6 +320,10 @@ static int __init s3c_arch_init(void)
        if (ret != 0)
                return ret;
 
+       ret = platform_add_devices(s3c24xx_uart_devs, nr_uarts);
+       if (ret != 0)
+               return ret;
+
        if (board != NULL) {
                struct platform_device **ptr = board->devices;
                int i;