433 lines
10 KiB
C
433 lines
10 KiB
C
/*
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* Hardware definitions for Compaq iPAQ H3xxx Handheld Computers
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*
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* Copyright 2000,1 Compaq Computer Corporation.
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*
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* Use consistent with the GNU GPL is permitted,
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* provided that this copyright notice is
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* preserved in its entirety in all copies and derived works.
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*
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* COMPAQ COMPUTER CORPORATION MAKES NO WARRANTIES, EXPRESSED OR IMPLIED,
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* AS TO THE USEFULNESS OR CORRECTNESS OF THIS CODE OR ITS
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* FITNESS FOR ANY PARTICULAR PURPOSE.
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*
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* Author: Jamey Hicks.
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*
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* History:
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*
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* 2001-10-?? Andrew Christian Added support for iPAQ H3800
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* and abstracted EGPIO interface.
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*
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/tty.h>
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#include <linux/pm.h>
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#include <linux/device.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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#include <linux/serial_core.h>
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#include <asm/irq.h>
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#include <mach/hardware.h>
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#include <asm/mach-types.h>
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#include <asm/setup.h>
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#include <asm/mach/irq.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/flash.h>
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#include <asm/mach/irda.h>
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#include <asm/mach/map.h>
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#include <asm/mach/serial_sa1100.h>
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#include <mach/h3600.h>
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#include <mach/h3600_gpio.h>
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#include "generic.h"
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void (*assign_h3600_egpio)(enum ipaq_egpio_type x, int level);
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EXPORT_SYMBOL(assign_h3600_egpio);
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static struct mtd_partition h3xxx_partitions[] = {
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{
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.name = "H3XXX boot firmware",
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.size = 0x00040000,
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.offset = 0,
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.mask_flags = MTD_WRITEABLE, /* force read-only */
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}, {
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.name = "H3XXX rootfs",
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.size = MTDPART_SIZ_FULL,
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.offset = 0x00040000,
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}
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};
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static void h3xxx_set_vpp(int vpp)
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{
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assign_h3600_egpio(IPAQ_EGPIO_VPP_ON, vpp);
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}
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static struct flash_platform_data h3xxx_flash_data = {
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.map_name = "cfi_probe",
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.set_vpp = h3xxx_set_vpp,
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.parts = h3xxx_partitions,
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.nr_parts = ARRAY_SIZE(h3xxx_partitions),
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};
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static struct resource h3xxx_flash_resource = {
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.start = SA1100_CS0_PHYS,
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.end = SA1100_CS0_PHYS + SZ_32M - 1,
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.flags = IORESOURCE_MEM,
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};
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/*
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* This turns the IRDA power on or off on the Compaq H3600
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*/
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static int h3600_irda_set_power(struct device *dev, unsigned int state)
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{
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assign_h3600_egpio( IPAQ_EGPIO_IR_ON, state );
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return 0;
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}
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static void h3600_irda_set_speed(struct device *dev, unsigned int speed)
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{
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assign_h3600_egpio(IPAQ_EGPIO_IR_FSEL, !(speed < 4000000));
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}
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static struct irda_platform_data h3600_irda_data = {
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.set_power = h3600_irda_set_power,
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.set_speed = h3600_irda_set_speed,
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};
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static void h3xxx_mach_init(void)
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{
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sa11x0_set_flash_data(&h3xxx_flash_data, &h3xxx_flash_resource, 1);
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sa11x0_set_irda_data(&h3600_irda_data);
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}
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/*
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* low-level UART features
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*/
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static void h3600_uart_set_mctrl(struct uart_port *port, u_int mctrl)
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{
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if (port->mapbase == _Ser3UTCR0) {
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if (mctrl & TIOCM_RTS)
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GPCR = GPIO_H3600_COM_RTS;
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else
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GPSR = GPIO_H3600_COM_RTS;
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}
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}
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static u_int h3600_uart_get_mctrl(struct uart_port *port)
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{
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u_int ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR;
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if (port->mapbase == _Ser3UTCR0) {
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int gplr = GPLR;
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/* DCD and CTS bits are inverted in GPLR by RS232 transceiver */
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if (gplr & GPIO_H3600_COM_DCD)
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ret &= ~TIOCM_CD;
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if (gplr & GPIO_H3600_COM_CTS)
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ret &= ~TIOCM_CTS;
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}
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return ret;
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}
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static void h3600_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
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{
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if (port->mapbase == _Ser2UTCR0) { /* TODO: REMOVE THIS */
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assign_h3600_egpio(IPAQ_EGPIO_IR_ON, !state);
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} else if (port->mapbase == _Ser3UTCR0) {
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assign_h3600_egpio(IPAQ_EGPIO_RS232_ON, !state);
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}
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}
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/*
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* Enable/Disable wake up events for this serial port.
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* Obviously, we only support this on the normal COM port.
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*/
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static int h3600_uart_set_wake(struct uart_port *port, u_int enable)
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{
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int err = -EINVAL;
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if (port->mapbase == _Ser3UTCR0) {
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if (enable)
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PWER |= PWER_GPIO23 | PWER_GPIO25; /* DCD and CTS */
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else
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PWER &= ~(PWER_GPIO23 | PWER_GPIO25); /* DCD and CTS */
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err = 0;
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}
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return err;
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}
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static struct sa1100_port_fns h3600_port_fns __initdata = {
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.set_mctrl = h3600_uart_set_mctrl,
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.get_mctrl = h3600_uart_get_mctrl,
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.pm = h3600_uart_pm,
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.set_wake = h3600_uart_set_wake,
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};
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/*
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* helper for sa1100fb
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*/
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static void h3xxx_lcd_power(int enable)
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{
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assign_h3600_egpio(IPAQ_EGPIO_LCD_POWER, enable);
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}
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static struct map_desc h3600_io_desc[] __initdata = {
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{ /* static memory bank 2 CS#2 */
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.virtual = H3600_BANK_2_VIRT,
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.pfn = __phys_to_pfn(SA1100_CS2_PHYS),
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.length = 0x02800000,
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.type = MT_DEVICE
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}, { /* static memory bank 4 CS#4 */
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.virtual = H3600_BANK_4_VIRT,
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.pfn = __phys_to_pfn(SA1100_CS4_PHYS),
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.length = 0x00800000,
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.type = MT_DEVICE
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}, { /* EGPIO 0 CS#5 */
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.virtual = H3600_EGPIO_VIRT,
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.pfn = __phys_to_pfn(H3600_EGPIO_PHYS),
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.length = 0x01000000,
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.type = MT_DEVICE
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}
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};
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/*
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* Common map_io initialization
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*/
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static void __init h3xxx_map_io(void)
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{
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sa1100_map_io();
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iotable_init(h3600_io_desc, ARRAY_SIZE(h3600_io_desc));
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sa1100_register_uart_fns(&h3600_port_fns);
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sa1100_register_uart(0, 3); /* Common serial port */
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// sa1100_register_uart(1, 1); /* Microcontroller on 3100/3600 */
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/* Ensure those pins are outputs and driving low */
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PPDR |= PPC_TXD4 | PPC_SCLK | PPC_SFRM;
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PPSR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM);
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/* Configure suspend conditions */
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PGSR = 0;
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PWER = PWER_GPIO0 | PWER_RTC;
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PCFR = PCFR_OPDE;
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PSDR = 0;
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sa1100fb_lcd_power = h3xxx_lcd_power;
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}
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/************************* H3100 *************************/
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#ifdef CONFIG_SA1100_H3100
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#define H3100_EGPIO (*(volatile unsigned int *)H3600_EGPIO_VIRT)
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static unsigned int h3100_egpio = 0;
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static void h3100_control_egpio(enum ipaq_egpio_type x, int setp)
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{
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unsigned int egpio = 0;
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long gpio = 0;
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unsigned long flags;
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switch (x) {
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case IPAQ_EGPIO_LCD_POWER:
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egpio |= EGPIO_H3600_LCD_ON;
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gpio |= GPIO_H3100_LCD_3V_ON;
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break;
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case IPAQ_EGPIO_LCD_ENABLE:
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break;
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case IPAQ_EGPIO_CODEC_NRESET:
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egpio |= EGPIO_H3600_CODEC_NRESET;
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break;
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case IPAQ_EGPIO_AUDIO_ON:
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gpio |= GPIO_H3100_AUD_PWR_ON
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| GPIO_H3100_AUD_ON;
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break;
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case IPAQ_EGPIO_QMUTE:
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gpio |= GPIO_H3100_QMUTE;
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break;
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case IPAQ_EGPIO_OPT_NVRAM_ON:
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egpio |= EGPIO_H3600_OPT_NVRAM_ON;
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break;
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case IPAQ_EGPIO_OPT_ON:
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egpio |= EGPIO_H3600_OPT_ON;
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break;
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case IPAQ_EGPIO_CARD_RESET:
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egpio |= EGPIO_H3600_CARD_RESET;
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break;
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case IPAQ_EGPIO_OPT_RESET:
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egpio |= EGPIO_H3600_OPT_RESET;
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break;
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case IPAQ_EGPIO_IR_ON:
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gpio |= GPIO_H3100_IR_ON;
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break;
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case IPAQ_EGPIO_IR_FSEL:
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gpio |= GPIO_H3100_IR_FSEL;
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break;
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case IPAQ_EGPIO_RS232_ON:
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egpio |= EGPIO_H3600_RS232_ON;
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break;
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case IPAQ_EGPIO_VPP_ON:
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egpio |= EGPIO_H3600_VPP_ON;
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break;
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}
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if (egpio || gpio) {
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local_irq_save(flags);
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if (setp) {
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h3100_egpio |= egpio;
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GPSR = gpio;
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} else {
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h3100_egpio &= ~egpio;
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GPCR = gpio;
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}
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H3100_EGPIO = h3100_egpio;
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local_irq_restore(flags);
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}
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}
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#define H3100_DIRECT_EGPIO (GPIO_H3100_BT_ON \
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| GPIO_H3100_GPIO3 \
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| GPIO_H3100_QMUTE \
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| GPIO_H3100_LCD_3V_ON \
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| GPIO_H3100_AUD_ON \
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| GPIO_H3100_AUD_PWR_ON \
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| GPIO_H3100_IR_ON \
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| GPIO_H3100_IR_FSEL)
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static void __init h3100_map_io(void)
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{
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h3xxx_map_io();
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/* Initialize h3100-specific values here */
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GPCR = 0x0fffffff; /* All outputs are set low by default */
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GPDR = GPIO_H3600_COM_RTS | GPIO_H3600_L3_CLOCK |
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GPIO_H3600_L3_MODE | GPIO_H3600_L3_DATA |
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GPIO_H3600_CLK_SET1 | GPIO_H3600_CLK_SET0 |
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H3100_DIRECT_EGPIO;
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/* Older bootldrs put GPIO2-9 in alternate mode on the
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assumption that they are used for video */
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GAFR &= ~H3100_DIRECT_EGPIO;
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H3100_EGPIO = h3100_egpio;
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assign_h3600_egpio = h3100_control_egpio;
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}
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MACHINE_START(H3100, "Compaq iPAQ H3100")
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.phys_io = 0x80000000,
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.io_pg_offst = ((0xf8000000) >> 18) & 0xfffc,
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.boot_params = 0xc0000100,
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.map_io = h3100_map_io,
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.init_irq = sa1100_init_irq,
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.timer = &sa1100_timer,
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.init_machine = h3xxx_mach_init,
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MACHINE_END
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#endif /* CONFIG_SA1100_H3100 */
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/************************* H3600 *************************/
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#ifdef CONFIG_SA1100_H3600
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#define H3600_EGPIO (*(volatile unsigned int *)H3600_EGPIO_VIRT)
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static unsigned int h3600_egpio = EGPIO_H3600_RS232_ON;
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static void h3600_control_egpio(enum ipaq_egpio_type x, int setp)
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{
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unsigned int egpio = 0;
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unsigned long flags;
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switch (x) {
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case IPAQ_EGPIO_LCD_POWER:
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egpio |= EGPIO_H3600_LCD_ON |
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EGPIO_H3600_LCD_PCI |
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EGPIO_H3600_LCD_5V_ON |
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EGPIO_H3600_LVDD_ON;
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break;
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case IPAQ_EGPIO_LCD_ENABLE:
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break;
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case IPAQ_EGPIO_CODEC_NRESET:
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egpio |= EGPIO_H3600_CODEC_NRESET;
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break;
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case IPAQ_EGPIO_AUDIO_ON:
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egpio |= EGPIO_H3600_AUD_AMP_ON |
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EGPIO_H3600_AUD_PWR_ON;
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break;
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case IPAQ_EGPIO_QMUTE:
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egpio |= EGPIO_H3600_QMUTE;
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break;
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case IPAQ_EGPIO_OPT_NVRAM_ON:
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egpio |= EGPIO_H3600_OPT_NVRAM_ON;
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break;
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case IPAQ_EGPIO_OPT_ON:
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egpio |= EGPIO_H3600_OPT_ON;
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break;
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case IPAQ_EGPIO_CARD_RESET:
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egpio |= EGPIO_H3600_CARD_RESET;
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break;
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case IPAQ_EGPIO_OPT_RESET:
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egpio |= EGPIO_H3600_OPT_RESET;
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break;
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case IPAQ_EGPIO_IR_ON:
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egpio |= EGPIO_H3600_IR_ON;
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break;
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case IPAQ_EGPIO_IR_FSEL:
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egpio |= EGPIO_H3600_IR_FSEL;
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break;
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case IPAQ_EGPIO_RS232_ON:
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egpio |= EGPIO_H3600_RS232_ON;
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break;
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case IPAQ_EGPIO_VPP_ON:
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egpio |= EGPIO_H3600_VPP_ON;
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break;
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}
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if (egpio) {
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local_irq_save(flags);
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if (setp)
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h3600_egpio |= egpio;
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else
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h3600_egpio &= ~egpio;
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H3600_EGPIO = h3600_egpio;
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local_irq_restore(flags);
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}
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}
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static void __init h3600_map_io(void)
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{
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h3xxx_map_io();
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/* Initialize h3600-specific values here */
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GPCR = 0x0fffffff; /* All outputs are set low by default */
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GPDR = GPIO_H3600_COM_RTS | GPIO_H3600_L3_CLOCK |
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GPIO_H3600_L3_MODE | GPIO_H3600_L3_DATA |
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GPIO_H3600_CLK_SET1 | GPIO_H3600_CLK_SET0 |
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GPIO_LDD15 | GPIO_LDD14 | GPIO_LDD13 | GPIO_LDD12 |
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GPIO_LDD11 | GPIO_LDD10 | GPIO_LDD9 | GPIO_LDD8;
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H3600_EGPIO = h3600_egpio; /* Maintains across sleep? */
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assign_h3600_egpio = h3600_control_egpio;
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}
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MACHINE_START(H3600, "Compaq iPAQ H3600")
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.phys_io = 0x80000000,
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.io_pg_offst = ((0xf8000000) >> 18) & 0xfffc,
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.boot_params = 0xc0000100,
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.map_io = h3600_map_io,
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.init_irq = sa1100_init_irq,
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.timer = &sa1100_timer,
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.init_machine = h3xxx_mach_init,
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MACHINE_END
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#endif /* CONFIG_SA1100_H3600 */
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