vserver 1.9.5.x5

[linux-2.6.git] / arch / arm / mach-s3c2410 / s3c2410.c

diff --git a/arch/arm/mach-s3c2410/s3c2410.c b/arch/arm/mach-s3c2410/s3c2410.c
index 7709e8d..b8270f2 100644 (file)
--- a/arch/arm/mach-s3c2410/s3c2410.c
+++ b/arch/arm/mach-s3c2410/s3c2410.c
@@ -1,7 +1,7 @@
 /* linux/arch/arm/mach-s3c2410/s3c2410.c
  *
- * Copyright (c) 2003,2004 Simtec Electronics
- * Ben Dooks <ben@simtec.co.uk>
+ * Copyright (c) 2003-2005 Simtec Electronics
+ *     Ben Dooks <ben@simtec.co.uk>
  *
  * http://www.simtec.co.uk/products/EB2410ITX/
  *
@@ -15,6 +15,9 @@
  *     05-Sep-2003 BJD  Moved to kernel v2.6
  *     18-Jan-2004 BJD  Added serial port configuration
  *     21-Aug-2004 BJD  Added new struct s3c2410_board handler
+ *     28-Sep-2004 BJD  Updates for new serial port bits
+ *     04-Nov-2004 BJD  Updated UART configuration process
+ *     10-Jan-2004 BJD  Removed s3c2410_clock_tick_rate
 */
 
 #include <linux/kernel.h>
@@ -38,18 +41,9 @@
 
 #include "s3c2410.h"
 #include "cpu.h"
+#include "clock.h"
 
-int s3c2410_clock_tick_rate = 12*1000*1000;  /* current timers at 12MHz */
-
-/* serial port setup */
-
-struct s3c2410_uartcfg *s3c2410_uartcfgs;
-
-/* clock info */
-
-unsigned long s3c2410_fclk;
-unsigned long s3c2410_hclk;
-unsigned long s3c2410_pclk;
+/* Initial IO mappings */
 
 static struct map_desc s3c2410_iodesc[] __initdata = {
        IODESC_ENT(USBHOST),
@@ -131,72 +125,75 @@ static struct platform_device *uart_devices[] __initdata = {
        &s3c_uart2
 };
 
-void __init s3c2410_map_io(struct map_desc *mach_desc, int mach_size)
+/* store our uart devices for the serial driver console */
+struct platform_device *s3c2410_uart_devices[3];
+
+static int s3c2410_uart_count = 0;
+
+/* uart registration process */
+
+void __init s3c2410_init_uarts(struct s3c2410_uartcfg *cfg, int no)
 {
-       unsigned long tmp;
+       struct platform_device *platdev;
+       int uart;
+
+       for (uart = 0; uart < no; uart++, cfg++) {
+               platdev = uart_devices[cfg->hwport];
+
+               s3c24xx_uart_devs[uart] = platdev;
+               platdev->dev.platform_data = cfg;
+       }
+
+       s3c2410_uart_count = uart;
+}
+
+/* s3c2410_map_io
+ *
+ * register the standard cpu IO areas, and any passed in from the
+ * machine specific initialisation.
+*/
 
+void __init s3c2410_map_io(struct map_desc *mach_desc, int mach_size)
+{
        /* register our io-tables */
 
        iotable_init(s3c2410_iodesc, ARRAY_SIZE(s3c2410_iodesc));
        iotable_init(mach_desc, mach_size);
+}
 
-       printk("machine_initted %p,%d\n", mach_desc, mach_size);
+void __init s3c2410_init_clocks(int xtal)
+{
+       unsigned long tmp;
 
        /* now we've got our machine bits initialised, work out what
         * clocks we've got */
 
-       s3c2410_fclk = s3c2410_get_pll(__raw_readl(S3C2410_MPLLCON), 12*MHZ);
+       s3c24xx_fclk = s3c2410_get_pll(__raw_readl(S3C2410_MPLLCON),
+                                      s3c24xx_xtal);
 
        tmp = __raw_readl(S3C2410_CLKDIVN);
-       //printk("tmp=%08x, fclk=%d\n", tmp, s3c2410_fclk);
 
        /* work out clock scalings */
 
-       s3c2410_hclk = s3c2410_fclk / ((tmp & S3C2410_CLKDIVN_HDIVN) ? 2 : 1);
-       s3c2410_pclk = s3c2410_hclk / ((tmp & S3C2410_CLKDIVN_PDIVN) ? 2 : 1);
+       s3c24xx_hclk = s3c24xx_fclk / ((tmp & S3C2410_CLKDIVN_HDIVN) ? 2 : 1);
+       s3c24xx_pclk = s3c24xx_hclk / ((tmp & S3C2410_CLKDIVN_PDIVN) ? 2 : 1);
 
        /* print brieft summary of clocks, etc */
 
        printk("S3C2410: core %ld.%03ld MHz, memory %ld.%03ld MHz, peripheral %ld.%03ld MHz\n",
-              print_mhz(s3c2410_fclk), print_mhz(s3c2410_hclk),
-              print_mhz(s3c2410_pclk));
-}
+              print_mhz(s3c24xx_fclk), print_mhz(s3c24xx_hclk),
+              print_mhz(s3c24xx_pclk));
 
-static struct s3c2410_board *board;
-
-void s3c2410_set_board(struct s3c2410_board *b)
-{
-       board = b;
-}
+       /* initialise the clocks here, to allow other things like the
+        * console to use them
+        */
 
-void s3c2410_init_uarts(struct s3c2410_uartcfg *cfg, int no)
-{
-       s3c2410_uartcfgs = cfg;
+       s3c24xx_setup_clocks();
 }
 
 int __init s3c2410_init(void)
 {
-       int ret;
-
        printk("S3C2410: Initialising architecture\n");
 
-       ret = platform_add_devices(uart_devices, ARRAY_SIZE(uart_devices));
-       if (ret)
-               return ret;
-
-       if (board != NULL) {
-               if (board->devices != NULL) {
-                       ret = platform_add_devices(board->devices,
-                                                  board->devices_count);
-
-                       if (ret) {
-                               printk(KERN_ERR "s3c2410: failed to add board devices (%d)\n", ret);
-                       }
-               }
-
-               /* not adding board devices may not be fatal */
-               ret = 0;
-       }
-
-       return ret;
+       return platform_add_devices(s3c24xx_uart_devs, s3c2410_uart_count);
 }