h3600.c
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上传日期:2013-02-24
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- /*
- * 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=%dn",
- 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
- };
- /*
- * Use command line argument to choose between ipaq handheld model numbers
- */
- struct ipaq_model_ops ipaq_model_ops;
- EXPORT_SYMBOL(ipaq_model_ops);
- static int __init h3600_init_model_ops(void)
- {
- if (machine_is_h3xxx()) {
- 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_dcd_intr(int irq, void *dev_id, struct pt_regs *regs)
- {
- struct uart_info *info = dev_id;
- /* Note: should only call this if something has changed */
- uart_handle_dcd_change(info, !(GPLR & GPIO_H3600_COM_DCD));
- }
- static void h3600_cts_intr(int irq, void *dev_id, struct pt_regs *regs)
- {
- struct uart_info *info = dev_id;
- /* Note: should only call this if something has changed */
- uart_handle_cts_change(info, !(GPLR & GPIO_H3600_COM_CTS));
- }
- 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 int h3600_uart_open(struct uart_port *port, struct uart_info *info)
- {
- int ret = 0;
- if (port->mapbase == _Ser2UTCR0) {
- Ser2UTCR4 = UTCR4_HSE;
- Ser2HSCR0 = 0;
- Ser2HSSR0 = HSSR0_EIF | HSSR0_TUR |
- HSSR0_RAB | HSSR0_FRE;
- } else if (port->mapbase == _Ser3UTCR0) {
- set_GPIO_IRQ_edge(GPIO_H3600_COM_DCD|GPIO_H3600_COM_CTS,
- GPIO_BOTH_EDGES);
- ret = request_irq(IRQ_GPIO_H3600_COM_DCD, h3600_dcd_intr,
- 0, "RS232 DCD", info);
- if (ret)
- return ret;
- ret = request_irq(IRQ_GPIO_H3600_COM_CTS, h3600_cts_intr,
- 0, "RS232 CTS", info);
- if (ret)
- free_irq(IRQ_GPIO_H3600_COM_DCD, info);
- }
- return ret;
- }
- static void h3600_uart_close(struct uart_port *port, struct uart_info *info)
- {
- if (port->mapbase == _Ser3UTCR0) {
- free_irq(IRQ_GPIO_H3600_COM_DCD, info);
- free_irq(IRQ_GPIO_H3600_COM_CTS, info);
- }
- }
- 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,
- open: h3600_uart_open,
- close: h3600_uart_close,
- };
- static struct map_desc h3600_io_desc[] __initdata = {
- /* virtual physical length domain r w c b */
- { 0xe8000000, 0x00000000, 0x02000000, DOMAIN_IO, 0, 1, 0, 0 }, /* Flash bank 0 CS#0 */
- { 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