[ARM PATCH] 1656/1: Simpad board update to make it work

Patch from Holger Freyther

Make it work ;)

arch/arm/boot/compressed/head-sa1100.S

@@ -34,6 +34,10 @@ __SA1100_start:
 		@ REVISIT_PFS168: Temporary until firmware updated to use assigned machine number
 		mov	r7, #MACH_TYPE_PFS168
 #endif
+#ifdef CONFIG_SA1100_SIMPAD /
+		@ UNTIL we've something like an open bootldr
+		mov	r7, #MACH_TYPE_SIMPAD @should be 87
+#endif
 
 #ifdef CONFIG_SA1100_VICTOR
 		teq	r7, #MACH_TYPE_VICTOR

arch/arm/mach-sa1100/simpad.c

@@ -9,24 +9,37 @@
 #include <linux/tty.h>
 #include <linux/proc_fs.h>
 #include <linux/string.h> 
+#include <linux/pm.h>
 
+#include <asm/irq.h>
 #include <asm/hardware.h>
 #include <asm/setup.h>
 
+#include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
 #include <asm/mach/serial_sa1100.h>
+#include <asm/arch/simpad.h>
+#include <asm/arch/registry.h>
+
 #include <linux/serial_core.h>
+#include <linux/ioport.h>
+#include <asm/io.h>
 
 #include "generic.h"
 
 long cs3_shadow;
 
-long get_cs3_shadow()
+long get_cs3_shadow(void)
 {
 	return cs3_shadow;
 }
 
+void set_cs3(long value)
+{
+	*(CS3BUSTYPE *)(CS3_BASE) = cs3_shadow = value;
+}
+
 void set_cs3_bit(int value)
 {
 	cs3_shadow |= value;
@@ -39,10 +52,15 @@ void clear_cs3_bit(int value)
 	*(CS3BUSTYPE *)(CS3_BASE) = cs3_shadow;
 }
 
+EXPORT_SYMBOL(set_cs3_bit);
+EXPORT_SYMBOL(clear_cs3_bit);
+
 static struct map_desc simpad_io_desc[] __initdata = {
         /* virtual	physical    length	type */
-  { 0xf2800000, 0x4b800000, 0x00800000, MT_DEVICE }, /* MQ200 */  
-  { 0xf1000000, 0x18000000, 0x00100000, MT_DEVICE }  /* Paules CS3, write only */
+	/* MQ200 */
+	{ 0xf2800000, 0x4b800000, 0x00800000, MT_DEVICE },
+	/* Paules CS3, write only */
+	{ 0xf1000000, 0x18000000, 0x00100000, MT_DEVICE },
 };
 
 
@@ -50,9 +68,14 @@ static void simpad_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
 {
 	if (port->mapbase == (u_int)&Ser1UTCR0) {
 		if (state)
+		{
 			clear_cs3_bit(RS232_ON);
-		else
+			clear_cs3_bit(DECT_POWER_ON);
+		}else
+		{
 			set_cs3_bit(RS232_ON);
+			set_cs3_bit(DECT_POWER_ON);
+		}
 	}
 }
 
@@ -63,19 +86,34 @@ static struct sa1100_port_fns simpad_port_fns __initdata = {
 static void __init simpad_map_io(void)
 {
 	sa1100_map_io();
+
 	iotable_init(simpad_io_desc, ARRAY_SIZE(simpad_io_desc));
 
-	PSPR = 0xc0008000;
-	GPDR &= ~GPIO_GPIO0;
-	cs3_shadow = (EN1 | EN0 | LED2_ON | DISPLAY_ON | RS232_ON | 
-		      ENABLE_5V | RESET_SIMCARD);
-	*(CS3BUSTYPE *)(CS3_BASE) = cs3_shadow;
+	set_cs3_bit (EN1 | EN0 | LED2_ON | DISPLAY_ON | RS232_ON |
+		      ENABLE_5V | RESET_SIMCARD | DECT_POWER_ON);
+
+
+        sa1100_register_uart_fns(&simpad_port_fns);
+	sa1100_register_uart(0, 3);  /* serial interface */
+	sa1100_register_uart(1, 1);  /* DECT             */
+
+	// Reassign UART 1 pins
+	GAFR |= GPIO_UART_TXD | GPIO_UART_RXD;
+	GPDR |= GPIO_UART_TXD | GPIO_LDD13 | GPIO_LDD15;
+	GPDR &= ~GPIO_UART_RXD;
+	PPAR |= PPAR_UPR;
+
+	/*
+	 * Set up registers for sleep mode.
+	 */
+
+
+	PWER = PWER_GPIO0| PWER_RTC;
+	PGSR = 0x818;
+	PCFR = 0;
+	PSDR = 0;
 
-	//It is only possible to register 3 UART in serial_sa1100.c
-	sa1100_register_uart(0, 3);
-	sa1100_register_uart(1, 1);
 
-	set_irq_type(IRQ_GPIO_UCB1300_IRQ, IRQT_RISING);
 }
 
 #ifdef CONFIG_PROC_FS
@@ -105,7 +143,7 @@ static int proc_cs3_read(char *page, char **start, off_t off,
 	char *p = page;
 	int len, i;
         
-	p += sprintf(p, "Chipselect3 : %x\n", cs3_shadow);
+	p += sprintf(p, "Chipselect3 : %x\n", (uint)cs3_shadow);
 	for (i = 0; i <= 15; i++) {
 		if(cs3_shadow & (1<<i)) {
 			p += sprintf(p, "%s\t: TRUE \n",name[i]);
@@ -122,22 +160,75 @@ static int proc_cs3_read(char *page, char **start, off_t off,
 	return len;
 }
 
+static int proc_cs3_write(struct file * file, const char * buffer,
+			  size_t count, loff_t *ppos)
+{
+        unsigned long newRegValue;
+	char *endp;
+
+        newRegValue = simple_strtoul(buffer,&endp,0);
+	set_cs3( newRegValue );
+        return (count+endp-buffer);
+}
+
+#endif
  
 static int __init cs3_init(void)
 {
-	struct proc_dir_entry *proc_cs3 = create_proc_entry("cs3", 0, 0);
+
+#ifdef CONFIG_PROC_FS
+	struct proc_dir_entry *proc_cs3 = create_proc_entry("CS3", 0, 0);
 	if (proc_cs3)
+	{
 		proc_cs3->read_proc = proc_cs3_read;
+		proc_cs3->write_proc = (void*)proc_cs3_write;
+	}
+#endif
+
+
+
 	return 0;
 }
  
 arch_initcall(cs3_init);
 
-#endif // CONFIG_PROC_FS
+static void simpad_power_off(void)
+{
+	local_irq_disable(); // was cli
+	set_cs3(0x800);        /* only SD_MEDIAQ */
+
+	/* disable internal oscillator, float CS lines */
+	PCFR = (PCFR_OPDE | PCFR_FP | PCFR_FS);
+	/* enable wake-up on GPIO0 (Assabet...) */
+	PWER = GFER = GRER = 1;
+	/*
+	 * set scratchpad to zero, just in case it is used as a
+	 * restart address by the bootloader.
+	 */
+	PSPR = 0;
+	PGSR = 0;
+	/* enter sleep mode */
+	PMCR = PMCR_SF;
+	while(1);
+
+	local_irq_enable(); /* we won't ever call it */
+
+
+}
+
+static int __init simpad_init(void)
+{
+	set_power_off_handler( simpad_power_off );
+	return 0;
+}
+
+arch_initcall(simpad_init);
+
 
 MACHINE_START(SIMPAD, "Simpad")
 	MAINTAINER("Juergen Messerer")
 	BOOT_MEM(0xc0000000, 0x80000000, 0xf8000000)
+        BOOT_PARAMS(0xc0000100)
 	MAPIO(simpad_map_io)
 	INITIRQ(sa1100_init_irq)
 MACHINE_END