davinci: Factor out emac mac address handling

[safe/jmp/linux-2.6] / arch / arm / mach-davinci / common.c

diff --git a/arch/arm/mach-davinci/common.c b/arch/arm/mach-davinci/common.c
index 9a5486f..169ec73 100644 (file)
--- a/arch/arm/mach-davinci/common.c
+++ b/arch/arm/mach-davinci/common.c
@@ -10,18 +10,52 @@
  */
 #include <linux/module.h>
 #include <linux/io.h>
+#include <linux/etherdevice.h>
 
 #include <asm/tlb.h>
 #include <asm/mach/map.h>
 
 #include <mach/common.h>
+#include <mach/cputype.h>
+#include <mach/emac.h>
+
+#include "clock.h"
 
 struct davinci_soc_info davinci_soc_info;
 EXPORT_SYMBOL(davinci_soc_info);
 
+void __iomem *davinci_intc_base;
+
+void davinci_get_mac_addr(struct memory_accessor *mem_acc, void *context)
+{
+       char *mac_addr = davinci_soc_info.emac_pdata->mac_addr;
+       off_t offset = (off_t)context;
+
+       /* Read MAC addr from EEPROM */
+       if (mem_acc->read(mem_acc, mac_addr, offset, ETH_ALEN) == ETH_ALEN)
+               pr_info("Read MAC addr from EEPROM: %pM\n", mac_addr);
+}
+
+static struct davinci_id * __init davinci_get_id(u32 jtag_id)
+{
+       int i;
+       struct davinci_id *dip;
+       u8 variant = (jtag_id & 0xf0000000) >> 28;
+       u16 part_no = (jtag_id & 0x0ffff000) >> 12;
+
+       for (i = 0, dip = davinci_soc_info.ids; i < davinci_soc_info.ids_num;
+                       i++, dip++)
+               /* Don't care about the manufacturer right now */
+               if ((dip->part_no == part_no) && (dip->variant == variant))
+                       return dip;
+
+       return NULL;
+}
+
 void __init davinci_common_init(struct davinci_soc_info *soc_info)
 {
        int ret;
+       struct davinci_id *dip;
 
        if (!soc_info) {
                ret = -EINVAL;
@@ -46,8 +80,25 @@ void __init davinci_common_init(struct davinci_soc_info *soc_info)
         * We want to check CPU revision early for cpu_is_xxxx() macros.
         * IO space mapping must be initialized before we can do that.
         */
-       davinci_check_revision();
+       davinci_soc_info.jtag_id = __raw_readl(davinci_soc_info.jtag_id_base);
+
+       dip = davinci_get_id(davinci_soc_info.jtag_id);
+       if (!dip) {
+               ret = -EINVAL;
+               goto err;
+       }
+
+       davinci_soc_info.cpu_id = dip->cpu_id;
+       pr_info("DaVinci %s variant 0x%x\n", dip->name, dip->variant);
+
+       if (davinci_soc_info.cpu_clks) {
+               ret = davinci_clk_init(davinci_soc_info.cpu_clks);
+
+               if (ret != 0)
+                       goto err;
+       }
 
+       davinci_intc_base = davinci_soc_info.intc_base;
        return;
 
 err: