diff options
Diffstat (limited to 'arch/arm/mach-sa1100/h3600.c')
| -rw-r--r-- | arch/arm/mach-sa1100/h3600.c | 892 |
1 files changed, 892 insertions, 0 deletions
diff --git a/arch/arm/mach-sa1100/h3600.c b/arch/arm/mach-sa1100/h3600.c new file mode 100644 index 0000000..9788d3a --- /dev/null +++ b/arch/arm/mach-sa1100/h3600.c @@ -0,0 +1,892 @@ +/* + * 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 */ |