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linux/arch/arm/mach-sa1100/h3600.c
Linus Torvalds 0cd61b68c3 Initial blind fixup for arm for irq changes 
Untested, but this should fix up the bulk of the totally mechanical
issues, and should make the actual detail fixing easier.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-06 10:59:54 -07:00

907 lines
22 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/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, unsigned 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 = {
{ /* static memory bank 2 CS#2 */
.virtual = H3600_BANK_2_VIRT,
.pfn = __phys_to_pfn(SA1100_CS2_PHYS),
.length = 0x02800000,
.type = MT_DEVICE
}, { /* static memory bank 4 CS#4 */
.virtual = H3600_BANK_4_VIRT,
.pfn = __phys_to_pfn(SA1100_CS4_PHYS),
.length = 0x00800000,
.type = MT_DEVICE
}, { /* EGPIO 0 CS#5 */
.virtual = H3600_EGPIO_VIRT,
.pfn = __phys_to_pfn(H3600_EGPIO_PHYS),
.length = 0x01000000,
.type = MT_DEVICE
}
};
/*
* 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")
.phys_io = 0x80000000,
.io_pg_offst = ((0xf8000000) >> 18) & 0xfffc,
.boot_params = 0xc0000100,
.map_io = h3100_map_io,
.init_irq = 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")
.phys_io = 0x80000000,
.io_pg_offst = ((0xf8000000) >> 18) & 0xfffc,
.boot_params = 0xc0000100,
.map_io = h3600_map_io,
.init_irq = 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)
{
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);
/* 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);
}
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 = IRQF_DISABLED | IRQF_TIMER,
};
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")
.phys_io = 0x80000000,
.io_pg_offst = ((0xf8000000) >> 18) & 0xfffc,
.boot_params = 0xc0000100,
.map_io = h3800_map_io,
.init_irq = h3800_init_irq,
.timer = &sa1100_timer,
.init_machine = h3xxx_mach_init,
MACHINE_END
#endif /* CONFIG_SA1100_H3800 */
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