/*
* 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/sched.h>
#include <asm/irq.h>
#include <asm/hardware.h>
#include <asm/setup.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/serial_sa1100.h>
#include <linux/serial_core.h>
#include <asm/arch/h3600_gpio.h>
#include "generic.h"
/*
* H3600 has extended, write-only memory-mapped GPIO's
* H3100 has 1/2 extended, write-only GPIO and 1/2 on
* regular GPIO lines.
* H3800 has memory-mapped GPIO through ASIC1 & 2
*/
#define H3600_EGPIO (*(volatile unsigned int *)H3600_EGPIO_VIRT)
static unsigned int h3600_egpio;
/************************* H3100 *************************/
#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 h3100_init_egpio( void )
{
GPDR |= H3100_DIRECT_EGPIO;
GPCR = H3100_DIRECT_EGPIO; /* Initially all off */
/* Older bootldrs put GPIO2-9 in alternate mode on the
assumption that they are used for video */
GAFR &= ~H3100_DIRECT_EGPIO;
h3600_egpio = EGPIO_H3600_RS232_ON;
H3600_EGPIO = h3600_egpio;
}
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_ON:
egpio |= EGPIO_H3600_LCD_ON;
gpio |= GPIO_H3100_LCD_3V_ON;
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;
}
local_irq_save(flags);
if ( setp ) {
h3600_egpio |= egpio;
GPSR = gpio;
} else {
h3600_egpio &= ~egpio;
GPCR = gpio;
}
H3600_EGPIO = h3600_egpio;
local_irq_restore(flags);
/*
if ( x != IPAQ_EGPIO_VPP_ON ) {
printk(__FUNCTION__ " : type=%d (%s) gpio=0x%x (0x%x) egpio=0x%x (0x%x) setp=%d\n",
x, egpio_names[x], GPLR, gpio, h3600_egpio, egpio, setp );
}
*/
}
static unsigned long h3100_read_egpio( void )
{
return h3600_egpio;
}
static struct ipaq_model_ops h3100_model_ops __initdata = {
model : IPAQ_H3100,
generic_name : "3100",
initialize : h3100_init_egpio,
control : h3100_control_egpio,
read : h3100_read_egpio
};
/************************* H3600 *************************/
static void h3600_init_egpio( void )
{
h3600_egpio = EGPIO_H3600_RS232_ON;
H3600_EGPIO = h3600_egpio;
}
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_ON:
egpio |= EGPIO_H3600_LCD_ON |
EGPIO_H3600_LCD_PCI |
EGPIO_H3600_LCD_5V_ON |
EGPIO_H3600_LVDD_ON;
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;
}
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 struct ipaq_model_ops h3600_model_ops __initdata = {
model : IPAQ_H3600,
generic_name : "3600",
initialize : h3600_init_egpio,
control : h3600_control_egpio,
read : h3600_read_egpio
};
/************************* H3800 *************************/
#define ASIC1_OUTPUTS 0x7fff /* First 15 bits are used */
static unsigned int h3800_asic1_gpio;
static unsigned int h3800_asic2_gpio;
static void h3800_init_egpio(void)
{
/* Set up ASIC #1 */
H3800_ASIC1_GPIO_Direction = ASIC1_OUTPUTS; /* All outputs */
H3800_ASIC1_GPIO_Mask = ASIC1_OUTPUTS; /* No interrupts */
H3800_ASIC1_GPIO_SleepMask = ASIC1_OUTPUTS;
H3800_ASIC1_GPIO_SleepDir = ASIC1_OUTPUTS;
H3800_ASIC1_GPIO_SleepOut = GPIO_H3800_ASIC1_EAR_ON_N;
H3800_ASIC1_GPIO_BattFaultDir = ASIC1_OUTPUTS;
H3800_ASIC1_GPIO_BattFaultOut = GPIO_H3800_ASIC1_EAR_ON_N;
h3800_asic1_gpio = GPIO_H3800_ASIC1_IR_ON_N /* TODO: Check IR level */
| GPIO_H3800_ASIC1_RS232_ON
| GPIO_H3800_ASIC1_EAR_ON_N;
H3800_ASIC1_GPIO_Out = h3800_asic1_gpio;
/* Set up ASIC #2 */
H3800_ASIC2_GPIO_Direction = GPIO_H3800_ASIC2_PEN_IRQ
| GPIO_H3800_ASIC2_SD_DETECT
| GPIO_H3800_ASIC2_EAR_IN_N
| GPIO_H3800_ASIC2_USB_DETECT_N
| GPIO_H3800_ASIC2_SD_CON_SLT;
h3800_asic2_gpio = GPIO_H3800_ASIC2_IN_Y1_N | GPIO_H3800_ASIC2_IN_X1_N;
H3800_ASIC2_GPIO_Data = h3800_asic2_gpio;
H3800_ASIC2_GPIO_BattFaultOut = h3800_asic2_gpio;
/* TODO : Set sleep states & battery fault states */
/* Clear VPP Enable */
H3800_ASIC1_FlashWP_VPP_ON = 0;
}
static void h3800_control_egpio( enum ipaq_egpio_type x, int setp )
{
unsigned int set_asic1_egpio = 0;
unsigned int clear_asic1_egpio = 0;
unsigned long flags;
switch (x) {
case IPAQ_EGPIO_LCD_ON:
set_asic1_egpio |= GPIO_H3800_ASIC1_LCD_5V_ON
| GPIO_H3800_ASIC1_LCD_ON
| GPIO_H3800_ASIC1_LCD_PCI
| GPIO_H3800_ASIC1_VGH_ON
| GPIO_H3800_ASIC1_VGL_ON;
break;
case IPAQ_EGPIO_CODEC_NRESET:
break;
case IPAQ_EGPIO_AUDIO_ON:
break;
case IPAQ_EGPIO_QMUTE:
break;
case IPAQ_EGPIO_OPT_NVRAM_ON:
break;
case IPAQ_EGPIO_OPT_ON:
break;
case IPAQ_EGPIO_CARD_RESET:
break;
case IPAQ_EGPIO_OPT_RESET:
break;
case IPAQ_EGPIO_IR_ON:
clear_asic1_egpio |= GPIO_H3800_ASIC1_IR_ON_N; /* TODO : This is backwards? */
break;
case IPAQ_EGPIO_IR_FSEL:
break;
case IPAQ_EGPIO_RS232_ON:
set_asic1_egpio |= GPIO_H3800_ASIC1_RS232_ON;
break;
case IPAQ_EGPIO_VPP_ON:
H3800_ASIC1_FlashWP_VPP_ON = setp;
break;
}
local_irq_save(flags);
if ( setp ) {
h3800_asic1_gpio |= set_asic1_egpio;
h3800_asic1_gpio &= ~clear_asic1_egpio;
}
else {
h3800_asic1_gpio &= ~set_asic1_egpio;
h3800_asic1_gpio |= clear_asic1_egpio;
}
H3800_ASIC1_GPIO_Out = h3800_asic1_gpio;
local_irq_restore(flags);
}
static unsigned long h3800_read_egpio( void )
{
return h3800_asic1_gpio | (h3800_asic2_gpio << 16);
}
static struct ipaq_model_ops h3800_model_ops __initdata = {
model : IPAQ_H3800,
generic_name : "3800",
initialize : h3800_init_egpio,
control : h3800_control_egpio,
read : h3800_read_egpio
};
static void h3600_lcd_power(int on)
{
if (on)
set_h3600_egpio(IPAQ_EGPIO_LCD_ON);
else
clr_h3600_egpio(IPAQ_EGPIO_LCD_ON);
}
struct ipaq_model_ops ipaq_model_ops;
EXPORT_SYMBOL(ipaq_model_ops);
static int __init h3600_init_model_ops(void)
{
if (machine_is_h3xxx()) {
sa1100fb_lcd_power = h3600_lcd_power;
if (machine_is_h3100()) {
ipaq_model_ops = h3100_model_ops;
} else if (machine_is_h3600()) {
ipaq_model_ops = h3600_model_ops;
} else if (machine_is_h3800()) {
ipaq_model_ops = h3800_model_ops;
}
init_h3600_egpio();
}
return 0;
}
__initcall(h3600_init_model_ops);
/*
* 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;
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) {
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,
};
static struct map_desc h3600_io_desc[] __initdata = {
/* virtual physical length domain r w c b */
{ H3600_EGPIO_VIRT, 0x49000000, 0x01000000, DOMAIN_IO, 0, 1, 0, 0 }, /* EGPIO 0 CS#5 */
{ H3600_BANK_2_VIRT, 0x10000000, 0x02800000, DOMAIN_IO, 0, 1, 0, 0 }, /* static memory bank 2 CS#2 */
{ H3600_BANK_4_VIRT, 0x40000000, 0x00800000, DOMAIN_IO, 0, 1, 0, 0 }, /* static memory bank 4 CS#4 */
LAST_DESC
};
static void __init h3600_map_io(void)
{
sa1100_map_io();
iotable_init(h3600_io_desc);
sa1100_register_uart_fns(&h3600_port_fns);
sa1100_register_uart(0, 3);
sa1100_register_uart(1, 1); /* isn't this one driven elsewhere? */
/*
* Default GPIO settings. Should be set by machine
*/
GPCR = 0x0fffffff;
// GPDR = 0x0401f3fc;
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;
init_h3600_egpio();
/*
* 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;
}
MACHINE_START(H3600, "Compaq iPAQ H3600")
BOOT_MEM(0xc0000000, 0x80000000, 0xf8000000)
BOOT_PARAMS(0xc0000100)
MAPIO(h3600_map_io)
INITIRQ(sa1100_init_irq)
MACHINE_END
MACHINE_START(H3100, "Compaq iPAQ H3100")
BOOT_MEM(0xc0000000, 0x80000000, 0xf8000000)
BOOT_PARAMS(0xc0000100)
MAPIO(h3600_map_io)
INITIRQ(sa1100_init_irq)
MACHINE_END
MACHINE_START(H3800, "Compaq iPAQ H3800")
BOOT_MEM(0xc0000000, 0x80000000, 0xf8000000)
BOOT_PARAMS(0xc0000100)
MAPIO(h3600_map_io)
INITIRQ(sa1100_init_irq)
MACHINE_END
