patch-2.4.9 linux/arch/arm/mach-sa1100/hw.c

• Lines: 189
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.4.8/linux/arch/arm/mach-sa1100/hw.c
• Orig date: Thu Feb 8 16:32:44 2001

diff -u --recursive --new-file v2.4.8/linux/arch/arm/mach-sa1100/hw.c linux/arch/arm/mach-sa1100/hw.c
@@ -1,188 +0,0 @@
-/*
- * arch/arm/kernel/hw-sa1100.c
- *
- * SA1100-dependent machine specifics
- *
- * Copyright (C) 2000 Nicolas Pitre <nico@cam.org>
- *
- * This will certainly contain more stuff with time... like power management,
- * special hardware autodetection, etc.
- *
- */
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-
-#include <asm/delay.h>
-#include <asm/hardware.h>
-#include <asm/mach-types.h>
-
-/*
- * SA1100 GPIO edge detection for IRQs:
- * IRQs are generated on Falling-Edge, Rising-Edge, or both.
- * This must be called *before* the appropriate IRQ is registered.
- * Use this instead of directly setting GRER/GFER.
- */
-
-int GPIO_IRQ_rising_edge;
-int GPIO_IRQ_falling_edge;
-
-void set_GPIO_IRQ_edge( int gpio_mask, int edge )
-{
-	if( edge & GPIO_FALLING_EDGE )
-		GPIO_IRQ_falling_edge |= gpio_mask;
-	else
-		GPIO_IRQ_falling_edge &= ~gpio_mask;
-	if( edge & GPIO_RISING_EDGE )
-		GPIO_IRQ_rising_edge |= gpio_mask;
-	else
-		GPIO_IRQ_rising_edge &= ~gpio_mask;
-}
-
-EXPORT_SYMBOL(set_GPIO_IRQ_edge);
-
-
-#ifdef CONFIG_SA1100_ASSABET
-
-unsigned long BCR_value = BCR_DB1110;
-unsigned long SCR_value = SCR_INIT;
-EXPORT_SYMBOL(BCR_value);
-EXPORT_SYMBOL(SCR_value);
-
-/*
- * Read System Configuration "Register"
- * (taken from "Intel StrongARM SA-1110 Microprocessor Development Board
- * User's Guide", section 4.4.1)
- *
- * This same scan is performed in arch/arm/boot/compressed/head-sa1100.S
- * to set up the serial port for decompression status messages. We 
- * repeat it here because the kernel may not be loaded as a zImage, and
- * also because it's a hassle to communicate the SCR value to the kernel
- * from the decompressor.
- */
-
-void __init get_assabet_scr(void)
-{
-	unsigned long flags, scr, i;
-
-	local_irq_save(flags);
-	GPDR |= 0x3fc;			/* Configure GPIO 9:2 as outputs */
-	GPSR = 0x3fc;			/* Write 0xFF to GPIO 9:2 */
-	GPDR &= ~(0x3fc);		/* Configure GPIO 9:2 as inputs */
-	for(i = 100; i--; scr = GPLR);	/* Read GPIO 9:2 */
-	GPDR |= 0x3fc;			/*  restore correct pin direction */
-	local_irq_restore(flags);
-	scr &= 0x3fc;			/* save as system configuration byte. */
-
-	SCR_value = scr;
-}
-
-#endif  /* CONFIG_SA1100_ASSABET */
-
-
-#if defined(CONFIG_SA1100_BITSY)
-/*
- * Bitsy has extended, write-only memory-mapped GPIO's
- */
-static int bitsy_egpio = EGPIO_BITSY_RS232_ON;
-void clr_bitsy_egpio(unsigned long x) 
-{
-  bitsy_egpio &= ~x;
-  BITSY_EGPIO = bitsy_egpio;
-}
-void set_bitsy_egpio(unsigned long x) 
-{
-  bitsy_egpio |= x;
-  BITSY_EGPIO = bitsy_egpio;
-}
-EXPORT_SYMBOL(clr_bitsy_egpio);
-EXPORT_SYMBOL(set_bitsy_egpio);
-#endif
-
-
-#ifdef CONFIG_SA1111
-
-static void __init sa1111_init(void){
-  unsigned long id=SKID;
-
-  if((id & SKID_ID_MASK) == SKID_SA1111_ID)
-    printk(KERN_INFO "SA-1111 Microprocessor Companion Chip: "
-	   "silicon revision %x, metal revision %x\n",
-	   (id & SKID_SIREV_MASK)>>4, (id & SKID_MTREV_MASK));
-  else {
-    printk(KERN_ERR "Could not detect SA-1111!\n");
-    return;
-  }
-
-  /* First, set up the 3.6864MHz clock on GPIO 27 for the SA-1111:
-   * (SA-1110 Developer's Manual, section 9.1.2.1)
-   */
-  GAFR |= GPIO_32_768kHz;
-  GPDR |= GPIO_32_768kHz;
-  TUCR = TUCR_3_6864MHz;
-
-  /* Now, set up the PLL and RCLK in the SA-1111: */
-  SKCR = SKCR_PLL_BYPASS | SKCR_RDYEN | SKCR_OE_EN;
-  udelay(100);
-  SKCR = SKCR_PLL_BYPASS | SKCR_RCLKEN | SKCR_RDYEN | SKCR_OE_EN;
-
-  /* SA-1111 Register Access Bus should now be available. Clocks for
-   * any other SA-1111 functional blocks must be enabled separately
-   * using the SKPCR.
-   */
-
-  /* If the system is going to use the SA-1111 DMA engines, set up
-   * the memory bus request/grant pins. Also configure the shared
-   * memory controller on the SA-1111 (SA-1111 Developer's Manual,
-   * section 3.2.3) and power up the DMA bus clock:
-   */
-  if(machine_is_assabet()){
-
-    GAFR |= (GPIO_MBGNT | GPIO_MBREQ);
-    GPDR |= GPIO_MBGNT;
-    GPDR &= ~GPIO_MBREQ;
-    TUCR |= TUCR_MR;
-
-    /* Assabet is populated by default with two Samsung KM416S8030T-G8
-     * 128Mb SDRAMs, which are organized as 12-bit (row addr) x 9-bit
-     * (column addr), according to the data sheet. Apparently, the 
-     * bank selects factor into the row address, as Angel sets up the
-     * SA-1110 to use 14x9 addresses. The SDRAM datasheet specifies
-     * that when running at 100-125MHz, the CAS latency for -8 parts
-     * is 3 cycles, which is consistent with Angel.
-     */
-
-    SMCR = (SMCR_DTIM | SMCR_MBGE | 
-	    FInsrt(FExtr(MDCNFG, MDCNFG_SA1110_DRAC0), SMCR_DRAC) |
-	    ((FExtr(MDCNFG, MDCNFG_SA1110_TDL0)==3) ? SMCR_CLAT : 0));
-
-    SKPCR |= SKPCR_DCLKEN;
-  }
-}
-
-#else
-#define sa1111_init()  printk( "Warning: missing SA1111 support\n" )
-#endif
-
-
-static int __init hw_sa1100_init(void)
-{
-	if( machine_is_assabet() ){
-		if(machine_has_neponset()){
-#ifdef CONFIG_ASSABET_NEPONSET
-			LEDS = WHOAMI;
-			sa1111_init();
-#else
-			printk( "Warning: Neponset detected but full support "
-				"hasn't been configured in the kernel\n" );
-#endif
-		}
-	} else if (machine_is_xp860()) {
-		sa1111_init();
-	}
-	return 0;
-}
-
-module_init(hw_sa1100_init);