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linux/arch/arm/mach-sa1100/h3600.c
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2 
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

893 lines
21 KiB
C
Raw Blame History

/*
* Hardware definitions for Compaq iPAQ H3xxx Handheld Computers
*
* Copyright 2000,1 Compaq Computer Corporation.
*
* Use consistent with the GNU GPL is permitted,
* provided that this copyright notice is
* preserved in its entirety in all copies and derived works.
*
* COMPAQ COMPUTER CORPORATION MAKES NO WARRANTIES, EXPRESSED OR IMPLIED,
* AS TO THE USEFULNESS OR CORRECTNESS OF THIS CODE OR ITS
* FITNESS FOR ANY PARTICULAR PURPOSE.
*
* Author: Jamey Hicks.
*
* History:
*
* 2001-10-?? Andrew Christian Added support for iPAQ H3800
* and abstracted EGPIO interface.
*
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/tty.h>
#include <linux/pm.h>
#include <linux/device.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/serial_core.h>
#include <asm/irq.h>
#include <asm/hardware.h>
#include <asm/mach-types.h>
#include <asm/setup.h>
#include <asm/mach/irq.h>
#include <asm/mach/arch.h>
#include <asm/mach/flash.h>
#include <asm/mach/irda.h>
#include <asm/mach/map.h>
#include <asm/mach/serial_sa1100.h>
#include <asm/arch/h3600.h>
#if defined (CONFIG_SA1100_H3600) || defined (CONFIG_SA1100_H3100)
#include <asm/arch/h3600_gpio.h>
#endif
#ifdef CONFIG_SA1100_H3800
#include <asm/arch/h3600_asic.h>
#endif
#include "generic.h"
struct ipaq_model_ops ipaq_model_ops;
EXPORT_SYMBOL(ipaq_model_ops);
static struct mtd_partition h3xxx_partitions[] = {
{
.name = "H3XXX boot firmware",
.size = 0x00040000,
.offset = 0,
.mask_flags = MTD_WRITEABLE, /* force read-only */
}, {
#ifdef CONFIG_MTD_2PARTS_IPAQ
.name = "H3XXX root jffs2",
.size = MTDPART_SIZ_FULL,
.offset = 0x00040000,
#else
.name = "H3XXX kernel",
.size = 0x00080000,
.offset = 0x00040000,
}, {
.name = "H3XXX params",
.size = 0x00040000,
.offset = 0x000C0000,
}, {
#ifdef CONFIG_JFFS2_FS
.name = "H3XXX root jffs2",
.size = MTDPART_SIZ_FULL,
.offset = 0x00100000,
#else
.name = "H3XXX initrd",
.size = 0x00100000,
.offset = 0x00100000,
}, {
.name = "H3XXX root cramfs",
.size = 0x00300000,
.offset = 0x00200000,
}, {
.name = "H3XXX usr cramfs",
.size = 0x00800000,
.offset = 0x00500000,
}, {
.name = "H3XXX usr local",
.size = MTDPART_SIZ_FULL,
.offset = 0x00d00000,
#endif
#endif
}
};
static void h3xxx_set_vpp(int vpp)
{
assign_h3600_egpio(IPAQ_EGPIO_VPP_ON, vpp);
}
static struct flash_platform_data h3xxx_flash_data = {
.map_name = "cfi_probe",
.set_vpp = h3xxx_set_vpp,
.parts = h3xxx_partitions,
.nr_parts = ARRAY_SIZE(h3xxx_partitions),
};
static struct resource h3xxx_flash_resource = {
.start = SA1100_CS0_PHYS,
.end = SA1100_CS0_PHYS + SZ_32M - 1,
.flags = IORESOURCE_MEM,
};
/*
* This turns the IRDA power on or off on the Compaq H3600
*/
static int h3600_irda_set_power(struct device *dev, unsigned int state)
{
assign_h3600_egpio( IPAQ_EGPIO_IR_ON, state );
return 0;
}
static void h3600_irda_set_speed(struct device *dev, int speed)
{
if (speed < 4000000) {
clr_h3600_egpio(IPAQ_EGPIO_IR_FSEL);
} else {
set_h3600_egpio(IPAQ_EGPIO_IR_FSEL);
}
}
static struct irda_platform_data h3600_irda_data = {
.set_power = h3600_irda_set_power,
.set_speed = h3600_irda_set_speed,
};
static void h3xxx_mach_init(void)
{
sa11x0_set_flash_data(&h3xxx_flash_data, &h3xxx_flash_resource, 1);
sa11x0_set_irda_data(&h3600_irda_data);
}
/*
* low-level UART features
*/
static void h3600_uart_set_mctrl(struct uart_port *port, u_int mctrl)
{
if (port->mapbase == _Ser3UTCR0) {
if (mctrl & TIOCM_RTS)
GPCR = GPIO_H3600_COM_RTS;
else
GPSR = GPIO_H3600_COM_RTS;
}
}
static u_int h3600_uart_get_mctrl(struct uart_port *port)
{
u_int ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR;
if (port->mapbase == _Ser3UTCR0) {
int gplr = GPLR;
/* DCD and CTS bits are inverted in GPLR by RS232 transceiver */
if (gplr & GPIO_H3600_COM_DCD)
ret &= ~TIOCM_CD;
if (gplr & GPIO_H3600_COM_CTS)
ret &= ~TIOCM_CTS;
}
return ret;
}
static void h3600_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
{
if (port->mapbase == _Ser2UTCR0) { /* TODO: REMOVE THIS */
assign_h3600_egpio(IPAQ_EGPIO_IR_ON, !state);
} else if (port->mapbase == _Ser3UTCR0) {
assign_h3600_egpio(IPAQ_EGPIO_RS232_ON, !state);
}
}
/*
* Enable/Disable wake up events for this serial port.
* Obviously, we only support this on the normal COM port.
*/
static int h3600_uart_set_wake(struct uart_port *port, u_int enable)
{
int err = -EINVAL;
if (port->mapbase == _Ser3UTCR0) {
if (enable)
PWER |= PWER_GPIO23 | PWER_GPIO25; /* DCD and CTS */
else
PWER &= ~(PWER_GPIO23 | PWER_GPIO25); /* DCD and CTS */
err = 0;
}
return err;
}
static struct sa1100_port_fns h3600_port_fns __initdata = {
.set_mctrl = h3600_uart_set_mctrl,
.get_mctrl = h3600_uart_get_mctrl,
.pm = h3600_uart_pm,
.set_wake = h3600_uart_set_wake,
};
/*
* helper for sa1100fb
*/
static void h3xxx_lcd_power(int enable)
{
assign_h3600_egpio(IPAQ_EGPIO_LCD_POWER, enable);
}
static struct map_desc h3600_io_desc[] __initdata = {
/* virtual physical length type */
{ H3600_BANK_2_VIRT, SA1100_CS2_PHYS, 0x02800000, MT_DEVICE }, /* static memory bank 2 CS#2 */
{ H3600_BANK_4_VIRT, SA1100_CS4_PHYS, 0x00800000, MT_DEVICE }, /* static memory bank 4 CS#4 */
{ H3600_EGPIO_VIRT, H3600_EGPIO_PHYS, 0x01000000, MT_DEVICE }, /* EGPIO 0 CS#5 */
};
/*
* Common map_io initialization
*/
static void __init h3xxx_map_io(void)
{
sa1100_map_io();
iotable_init(h3600_io_desc, ARRAY_SIZE(h3600_io_desc));
sa1100_register_uart_fns(&h3600_port_fns);
sa1100_register_uart(0, 3); /* Common serial port */
// sa1100_register_uart(1, 1); /* Microcontroller on 3100/3600 */
/* Ensure those pins are outputs and driving low */
PPDR |= PPC_TXD4 | PPC_SCLK | PPC_SFRM;
PPSR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM);
/* Configure suspend conditions */
PGSR = 0;
PWER = PWER_GPIO0 | PWER_RTC;
PCFR = PCFR_OPDE;
PSDR = 0;
sa1100fb_lcd_power = h3xxx_lcd_power;
}
static __inline__ void do_blank(int setp)
{
if (ipaq_model_ops.blank_callback)
ipaq_model_ops.blank_callback(1-setp);
}
/************************* H3100 *************************/
#ifdef CONFIG_SA1100_H3100
#define H3100_EGPIO (*(volatile unsigned int *)H3600_EGPIO_VIRT)
static unsigned int h3100_egpio = 0;
static void h3100_control_egpio(enum ipaq_egpio_type x, int setp)
{
unsigned int egpio = 0;
long gpio = 0;
unsigned long flags;
switch (x) {
case IPAQ_EGPIO_LCD_POWER:
egpio |= EGPIO_H3600_LCD_ON;
gpio |= GPIO_H3100_LCD_3V_ON;
do_blank(setp);
break;
case IPAQ_EGPIO_LCD_ENABLE:
break;
case IPAQ_EGPIO_CODEC_NRESET:
egpio |= EGPIO_H3600_CODEC_NRESET;
break;
case IPAQ_EGPIO_AUDIO_ON:
gpio |= GPIO_H3100_AUD_PWR_ON
| GPIO_H3100_AUD_ON;
break;
case IPAQ_EGPIO_QMUTE:
gpio |= GPIO_H3100_QMUTE;
break;
case IPAQ_EGPIO_OPT_NVRAM_ON:
egpio |= EGPIO_H3600_OPT_NVRAM_ON;
break;
case IPAQ_EGPIO_OPT_ON:
egpio |= EGPIO_H3600_OPT_ON;
break;
case IPAQ_EGPIO_CARD_RESET:
egpio |= EGPIO_H3600_CARD_RESET;
break;
case IPAQ_EGPIO_OPT_RESET:
egpio |= EGPIO_H3600_OPT_RESET;
break;
case IPAQ_EGPIO_IR_ON:
gpio |= GPIO_H3100_IR_ON;
break;
case IPAQ_EGPIO_IR_FSEL:
gpio |= GPIO_H3100_IR_FSEL;
break;
case IPAQ_EGPIO_RS232_ON:
egpio |= EGPIO_H3600_RS232_ON;
break;
case IPAQ_EGPIO_VPP_ON:
egpio |= EGPIO_H3600_VPP_ON;
break;
}
if (egpio || gpio) {
local_irq_save(flags);
if (setp) {
h3100_egpio |= egpio;
GPSR = gpio;
} else {
h3100_egpio &= ~egpio;
GPCR = gpio;
}
H3100_EGPIO = h3100_egpio;
local_irq_restore(flags);
}
}
static unsigned long h3100_read_egpio(void)
{
return h3100_egpio;
}
static int h3100_pm_callback(int req)
{
if (ipaq_model_ops.pm_callback_aux)
return ipaq_model_ops.pm_callback_aux(req);
return 0;
}
static struct ipaq_model_ops h3100_model_ops __initdata = {
.generic_name = "3100",
.control = h3100_control_egpio,
.read = h3100_read_egpio,
.pm_callback = h3100_pm_callback
};
#define H3100_DIRECT_EGPIO (GPIO_H3100_BT_ON \
| GPIO_H3100_GPIO3 \
| GPIO_H3100_QMUTE \
| GPIO_H3100_LCD_3V_ON \
| GPIO_H3100_AUD_ON \
| GPIO_H3100_AUD_PWR_ON \
| GPIO_H3100_IR_ON \
| GPIO_H3100_IR_FSEL)
static void __init h3100_map_io(void)
{
h3xxx_map_io();
/* Initialize h3100-specific values here */
GPCR = 0x0fffffff; /* All outputs are set low by default */
GPDR = GPIO_H3600_COM_RTS | GPIO_H3600_L3_CLOCK |
GPIO_H3600_L3_MODE | GPIO_H3600_L3_DATA |
GPIO_H3600_CLK_SET1 | GPIO_H3600_CLK_SET0 |
H3100_DIRECT_EGPIO;
/* Older bootldrs put GPIO2-9 in alternate mode on the
assumption that they are used for video */
GAFR &= ~H3100_DIRECT_EGPIO;
H3100_EGPIO = h3100_egpio;
ipaq_model_ops = h3100_model_ops;
}
MACHINE_START(H3100, "Compaq iPAQ H3100")
BOOT_MEM(0xc0000000, 0x80000000, 0xf8000000)
BOOT_PARAMS(0xc0000100)
MAPIO(h3100_map_io)
INITIRQ(sa1100_init_irq)
.timer = &sa1100_timer,
.init_machine = h3xxx_mach_init,
MACHINE_END
#endif /* CONFIG_SA1100_H3100 */
/************************* H3600 *************************/
#ifdef CONFIG_SA1100_H3600
#define H3600_EGPIO (*(volatile unsigned int *)H3600_EGPIO_VIRT)
static unsigned int h3600_egpio = EGPIO_H3600_RS232_ON;
static void h3600_control_egpio(enum ipaq_egpio_type x, int setp)
{
unsigned int egpio = 0;
unsigned long flags;
switch (x) {
case IPAQ_EGPIO_LCD_POWER:
egpio |= EGPIO_H3600_LCD_ON |
EGPIO_H3600_LCD_PCI |
EGPIO_H3600_LCD_5V_ON |
EGPIO_H3600_LVDD_ON;
do_blank(setp);
break;
case IPAQ_EGPIO_LCD_ENABLE:
break;
case IPAQ_EGPIO_CODEC_NRESET:
egpio |= EGPIO_H3600_CODEC_NRESET;
break;
case IPAQ_EGPIO_AUDIO_ON:
egpio |= EGPIO_H3600_AUD_AMP_ON |
EGPIO_H3600_AUD_PWR_ON;
break;
case IPAQ_EGPIO_QMUTE:
egpio |= EGPIO_H3600_QMUTE;
break;
case IPAQ_EGPIO_OPT_NVRAM_ON:
egpio |= EGPIO_H3600_OPT_NVRAM_ON;
break;
case IPAQ_EGPIO_OPT_ON:
egpio |= EGPIO_H3600_OPT_ON;
break;
case IPAQ_EGPIO_CARD_RESET:
egpio |= EGPIO_H3600_CARD_RESET;
break;
case IPAQ_EGPIO_OPT_RESET:
egpio |= EGPIO_H3600_OPT_RESET;
break;
case IPAQ_EGPIO_IR_ON:
egpio |= EGPIO_H3600_IR_ON;
break;
case IPAQ_EGPIO_IR_FSEL:
egpio |= EGPIO_H3600_IR_FSEL;
break;
case IPAQ_EGPIO_RS232_ON:
egpio |= EGPIO_H3600_RS232_ON;
break;
case IPAQ_EGPIO_VPP_ON:
egpio |= EGPIO_H3600_VPP_ON;
break;
}
if (egpio) {
local_irq_save(flags);
if (setp)
h3600_egpio |= egpio;
else
h3600_egpio &= ~egpio;
H3600_EGPIO = h3600_egpio;
local_irq_restore(flags);
}
}
static unsigned long h3600_read_egpio(void)
{
return h3600_egpio;
}
static int h3600_pm_callback(int req)
{
if (ipaq_model_ops.pm_callback_aux)
return ipaq_model_ops.pm_callback_aux(req);
return 0;
}
static struct ipaq_model_ops h3600_model_ops __initdata = {
.generic_name = "3600",
.control = h3600_control_egpio,
.read = h3600_read_egpio,
.pm_callback = h3600_pm_callback
};
static void __init h3600_map_io(void)
{
h3xxx_map_io();
/* Initialize h3600-specific values here */
GPCR = 0x0fffffff; /* All outputs are set low by default */
GPDR = GPIO_H3600_COM_RTS | GPIO_H3600_L3_CLOCK |
GPIO_H3600_L3_MODE | GPIO_H3600_L3_DATA |
GPIO_H3600_CLK_SET1 | GPIO_H3600_CLK_SET0 |
GPIO_LDD15 | GPIO_LDD14 | GPIO_LDD13 | GPIO_LDD12 |
GPIO_LDD11 | GPIO_LDD10 | GPIO_LDD9 | GPIO_LDD8;
H3600_EGPIO = h3600_egpio; /* Maintains across sleep? */
ipaq_model_ops = h3600_model_ops;
}
MACHINE_START(H3600, "Compaq iPAQ H3600")
BOOT_MEM(0xc0000000, 0x80000000, 0xf8000000)
BOOT_PARAMS(0xc0000100)
MAPIO(h3600_map_io)
INITIRQ(sa1100_init_irq)
.timer = &sa1100_timer,
.init_machine = h3xxx_mach_init,
MACHINE_END
#endif /* CONFIG_SA1100_H3600 */
#ifdef CONFIG_SA1100_H3800
#define SET_ASIC1(x) \
do {if (setp) { H3800_ASIC1_GPIO_OUT |= (x); } else { H3800_ASIC1_GPIO_OUT &= ~(x); }} while(0)
#define SET_ASIC2(x) \
do {if (setp) { H3800_ASIC2_GPIOPIOD |= (x); } else { H3800_ASIC2_GPIOPIOD &= ~(x); }} while(0)
#define CLEAR_ASIC1(x) \
do {if (setp) { H3800_ASIC1_GPIO_OUT &= ~(x); } else { H3800_ASIC1_GPIO_OUT |= (x); }} while(0)
#define CLEAR_ASIC2(x) \
do {if (setp) { H3800_ASIC2_GPIOPIOD &= ~(x); } else { H3800_ASIC2_GPIOPIOD |= (x); }} while(0)
/*
On screen enable, we get
h3800_video_power_on(1)
LCD controller starts
h3800_video_lcd_enable(1)
On screen disable, we get
h3800_video_lcd_enable(0)
LCD controller stops
h3800_video_power_on(0)
*/
static void h3800_video_power_on(int setp)
{
if (setp) {
H3800_ASIC1_GPIO_OUT |= GPIO1_LCD_ON;
msleep(30);
H3800_ASIC1_GPIO_OUT |= GPIO1_VGL_ON;
msleep(5);
H3800_ASIC1_GPIO_OUT |= GPIO1_VGH_ON;
msleep(50);
H3800_ASIC1_GPIO_OUT |= GPIO1_LCD_5V_ON;
msleep(5);
} else {
msleep(5);
H3800_ASIC1_GPIO_OUT &= ~GPIO1_LCD_5V_ON;
msleep(50);
H3800_ASIC1_GPIO_OUT &= ~GPIO1_VGL_ON;
msleep(5);
H3800_ASIC1_GPIO_OUT &= ~GPIO1_VGH_ON;
msleep(100);
H3800_ASIC1_GPIO_OUT &= ~GPIO1_LCD_ON;
}
}
static void h3800_video_lcd_enable(int setp)
{
if (setp) {
msleep(17); // Wait one from before turning on
H3800_ASIC1_GPIO_OUT |= GPIO1_LCD_PCI;
} else {
H3800_ASIC1_GPIO_OUT &= ~GPIO1_LCD_PCI;
msleep(30); // Wait before turning off
}
}
static void h3800_control_egpio(enum ipaq_egpio_type x, int setp)
{
switch (x) {
case IPAQ_EGPIO_LCD_POWER:
h3800_video_power_on(setp);
break;
case IPAQ_EGPIO_LCD_ENABLE:
h3800_video_lcd_enable(setp);
break;
case IPAQ_EGPIO_CODEC_NRESET:
case IPAQ_EGPIO_AUDIO_ON:
case IPAQ_EGPIO_QMUTE:
printk("%s: error - should not be called\n", __FUNCTION__);
break;
case IPAQ_EGPIO_OPT_NVRAM_ON:
SET_ASIC2(GPIO2_OPT_ON_NVRAM);
break;
case IPAQ_EGPIO_OPT_ON:
SET_ASIC2(GPIO2_OPT_ON);
break;
case IPAQ_EGPIO_CARD_RESET:
SET_ASIC2(GPIO2_OPT_PCM_RESET);
break;
case IPAQ_EGPIO_OPT_RESET:
SET_ASIC2(GPIO2_OPT_RESET);
break;
case IPAQ_EGPIO_IR_ON:
CLEAR_ASIC1(GPIO1_IR_ON_N);
break;
case IPAQ_EGPIO_IR_FSEL:
break;
case IPAQ_EGPIO_RS232_ON:
SET_ASIC1(GPIO1_RS232_ON);
break;
case IPAQ_EGPIO_VPP_ON:
H3800_ASIC2_FlashWP_VPP_ON = setp;
break;
}
}
static unsigned long h3800_read_egpio(void)
{
return H3800_ASIC1_GPIO_OUT | (H3800_ASIC2_GPIOPIOD << 16);
}
/* We need to fix ASIC2 GPIO over suspend/resume. At the moment,
it doesn't appear that ASIC1 GPIO has the same problem */
static int h3800_pm_callback(int req)
{
static u16 asic1_data;
static u16 asic2_data;
int result = 0;
printk("%s %d\n", __FUNCTION__, req);
switch (req) {
case PM_RESUME:
MSC2 = (MSC2 & 0x0000ffff) | 0xE4510000; /* Set MSC2 correctly */
H3800_ASIC2_GPIOPIOD = asic2_data;
H3800_ASIC2_GPIODIR = GPIO2_PEN_IRQ
| GPIO2_SD_DETECT
| GPIO2_EAR_IN_N
| GPIO2_USB_DETECT_N
| GPIO2_SD_CON_SLT;
H3800_ASIC1_GPIO_OUT = asic1_data;
if (ipaq_model_ops.pm_callback_aux)
result = ipaq_model_ops.pm_callback_aux(req);
break;
case PM_SUSPEND:
if (ipaq_model_ops.pm_callback_aux &&
((result = ipaq_model_ops.pm_callback_aux(req)) != 0))
return result;
asic1_data = H3800_ASIC1_GPIO_OUT;
asic2_data = H3800_ASIC2_GPIOPIOD;
break;
default:
printk("%s: unrecognized PM callback\n", __FUNCTION__);
break;
}
return result;
}
static struct ipaq_model_ops h3800_model_ops __initdata = {
.generic_name = "3800",
.control = h3800_control_egpio,
.read = h3800_read_egpio,
.pm_callback = h3800_pm_callback
};
#define MAX_ASIC_ISR_LOOPS 20
/* The order of these is important - see #include <asm/arch/irqs.h> */
static u32 kpio_irq_mask[] = {
KPIO_KEY_ALL,
KPIO_SPI_INT,
KPIO_OWM_INT,
KPIO_ADC_INT,
KPIO_UART_0_INT,
KPIO_UART_1_INT,
KPIO_TIMER_0_INT,
KPIO_TIMER_1_INT,
KPIO_TIMER_2_INT
};
static u32 gpio_irq_mask[] = {
GPIO2_PEN_IRQ,
GPIO2_SD_DETECT,
GPIO2_EAR_IN_N,
GPIO2_USB_DETECT_N,
GPIO2_SD_CON_SLT,
};
static void h3800_IRQ_demux(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
{
int i;
if (0) printk("%s: interrupt received\n", __FUNCTION__);
desc->chip->ack(irq);
for (i = 0; i < MAX_ASIC_ISR_LOOPS && (GPLR & GPIO_H3800_ASIC); i++) {
u32 irq;
int j;
/* KPIO */
irq = H3800_ASIC2_KPIINTFLAG;
if (0) printk("%s KPIO 0x%08X\n", __FUNCTION__, irq);
for (j = 0; j < H3800_KPIO_IRQ_COUNT; j++)
if (irq & kpio_irq_mask[j])
do_edge_IRQ(H3800_KPIO_IRQ_COUNT + j, irq_desc + H3800_KPIO_IRQ_COUNT + j, regs);
/* GPIO2 */
irq = H3800_ASIC2_GPIINTFLAG;
if (0) printk("%s GPIO 0x%08X\n", __FUNCTION__, irq);
for (j = 0; j < H3800_GPIO_IRQ_COUNT; j++)
if (irq & gpio_irq_mask[j])
do_edge_IRQ(H3800_GPIO_IRQ_COUNT + j, irq_desc + H3800_GPIO_IRQ_COUNT + j , regs);
}
if (i >= MAX_ASIC_ISR_LOOPS)
printk("%s: interrupt processing overrun\n", __FUNCTION__);
/* For level-based interrupts */
desc->chip->unmask(irq);
}
static struct irqaction h3800_irq = {
.name = "h3800_asic",
.handler = h3800_IRQ_demux,
.flags = SA_INTERRUPT,
};
u32 kpio_int_shadow = 0;
/* mask_ack <- IRQ is first serviced.
mask <- IRQ is disabled.
unmask <- IRQ is enabled
The INTCLR registers are poorly documented. I believe that writing
a "1" to the register clears the specific interrupt, but the documentation
indicates writing a "0" clears the interrupt. In any case, they shouldn't
be read (that's the INTFLAG register)
*/
static void h3800_mask_ack_kpio_irq(unsigned int irq)
{
u32 mask = kpio_irq_mask[irq - H3800_KPIO_IRQ_START];
kpio_int_shadow &= ~mask;
H3800_ASIC2_KPIINTSTAT = kpio_int_shadow;
H3800_ASIC2_KPIINTCLR = mask;
}
static void h3800_mask_kpio_irq(unsigned int irq)
{
u32 mask = kpio_irq_mask[irq - H3800_KPIO_IRQ_START];
kpio_int_shadow &= ~mask;
H3800_ASIC2_KPIINTSTAT = kpio_int_shadow;
}
static void h3800_unmask_kpio_irq(unsigned int irq)
{
u32 mask = kpio_irq_mask[irq - H3800_KPIO_IRQ_START];
kpio_int_shadow |= mask;
H3800_ASIC2_KPIINTSTAT = kpio_int_shadow;
}
static void h3800_mask_ack_gpio_irq(unsigned int irq)
{
u32 mask = gpio_irq_mask[irq - H3800_GPIO_IRQ_START];
H3800_ASIC2_GPIINTSTAT &= ~mask;
H3800_ASIC2_GPIINTCLR = mask;
}
static void h3800_mask_gpio_irq(unsigned int irq)
{
u32 mask = gpio_irq_mask[irq - H3800_GPIO_IRQ_START];
H3800_ASIC2_GPIINTSTAT &= ~mask;
}
static void h3800_unmask_gpio_irq(unsigned int irq)
{
u32 mask = gpio_irq_mask[irq - H3800_GPIO_IRQ_START];
H3800_ASIC2_GPIINTSTAT |= mask;
}
static void __init h3800_init_irq(void)
{
int i;
/* Initialize standard IRQs */
sa1100_init_irq();
/* Disable all IRQs and set up clock */
H3800_ASIC2_KPIINTSTAT = 0; /* Disable all interrupts */
H3800_ASIC2_GPIINTSTAT = 0;
H3800_ASIC2_KPIINTCLR = 0; /* Clear all KPIO interrupts */
H3800_ASIC2_GPIINTCLR = 0; /* Clear all GPIO interrupts */
// H3800_ASIC2_KPIINTCLR = 0xffff; /* Clear all KPIO interrupts */
// H3800_ASIC2_GPIINTCLR = 0xffff; /* Clear all GPIO interrupts */
H3800_ASIC2_CLOCK_Enable |= ASIC2_CLOCK_EX0; /* 32 kHZ crystal on */
H3800_ASIC2_INTR_ClockPrescale |= ASIC2_INTCPS_SET;
H3800_ASIC2_INTR_ClockPrescale = ASIC2_INTCPS_CPS(0x0e) | ASIC2_INTCPS_SET;
H3800_ASIC2_INTR_TimerSet = 1;
#if 0
for (i = 0; i < H3800_KPIO_IRQ_COUNT; i++) {
int irq = i + H3800_KPIO_IRQ_START;
irq_desc[irq].valid = 1;
irq_desc[irq].probe_ok = 1;
set_irq_chip(irq, &h3800_kpio_irqchip);
}
for (i = 0; i < H3800_GPIO_IRQ_COUNT; i++) {
int irq = i + H3800_GPIO_IRQ_START;
irq_desc[irq].valid = 1;
irq_desc[irq].probe_ok = 1;
set_irq_chip(irq, &h3800_gpio_irqchip);
}
#endif
set_irq_type(IRQ_GPIO_H3800_ASIC, IRQT_RISING);
set_irq_chained_handler(IRQ_GPIO_H3800_ASIC, &h3800_IRQ_demux);
}
#define ASIC1_OUTPUTS 0x7fff /* First 15 bits are used */
static void __init h3800_map_io(void)
{
h3xxx_map_io();
/* Add wakeup on AC plug/unplug */
PWER |= PWER_GPIO12;
/* Initialize h3800-specific values here */
GPCR = 0x0fffffff; /* All outputs are set low by default */
GAFR = GPIO_H3800_CLK_OUT |
GPIO_LDD15 | GPIO_LDD14 | GPIO_LDD13 | GPIO_LDD12 |
GPIO_LDD11 | GPIO_LDD10 | GPIO_LDD9 | GPIO_LDD8;
GPDR = GPIO_H3800_CLK_OUT |
GPIO_H3600_COM_RTS | GPIO_H3600_L3_CLOCK |
GPIO_H3600_L3_MODE | GPIO_H3600_L3_DATA |
GPIO_LDD15 | GPIO_LDD14 | GPIO_LDD13 | GPIO_LDD12 |
GPIO_LDD11 | GPIO_LDD10 | GPIO_LDD9 | GPIO_LDD8;
TUCR = TUCR_3_6864MHz; /* Seems to be used only for the Bluetooth UART */
/* Fix the memory bus */
MSC2 = (MSC2 & 0x0000ffff) | 0xE4510000;
/* Set up ASIC #1 */
H3800_ASIC1_GPIO_DIR = ASIC1_OUTPUTS; /* All outputs */
H3800_ASIC1_GPIO_MASK = ASIC1_OUTPUTS; /* No interrupts */
H3800_ASIC1_GPIO_SLEEP_MASK = ASIC1_OUTPUTS;
H3800_ASIC1_GPIO_SLEEP_DIR = ASIC1_OUTPUTS;
H3800_ASIC1_GPIO_SLEEP_OUT = GPIO1_EAR_ON_N;
H3800_ASIC1_GPIO_BATT_FAULT_DIR = ASIC1_OUTPUTS;
H3800_ASIC1_GPIO_BATT_FAULT_OUT = GPIO1_EAR_ON_N;
H3800_ASIC1_GPIO_OUT = GPIO1_IR_ON_N
| GPIO1_RS232_ON
| GPIO1_EAR_ON_N;
/* Set up ASIC #2 */
H3800_ASIC2_GPIOPIOD = GPIO2_IN_Y1_N | GPIO2_IN_X1_N;
H3800_ASIC2_GPOBFSTAT = GPIO2_IN_Y1_N | GPIO2_IN_X1_N;
H3800_ASIC2_GPIODIR = GPIO2_PEN_IRQ
| GPIO2_SD_DETECT
| GPIO2_EAR_IN_N
| GPIO2_USB_DETECT_N
| GPIO2_SD_CON_SLT;
/* TODO : Set sleep states & battery fault states */
/* Clear VPP Enable */
H3800_ASIC2_FlashWP_VPP_ON = 0;
ipaq_model_ops = h3800_model_ops;
}
MACHINE_START(H3800, "Compaq iPAQ H3800")
BOOT_MEM(0xc0000000, 0x80000000, 0xf8000000)
BOOT_PARAMS(0xc0000100)
MAPIO(h3800_map_io)
INITIRQ(h3800_init_irq)
.timer = &sa1100_timer,
.init_machine = h3xxx_mach_init,
MACHINE_END
#endif /* CONFIG_SA1100_H3800 */
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