- Visual C++源码
- Visual Basic源码
- C++ Builder源码
- Java源码
- Delphi源码
- C/C++源码
- PHP源码
- Perl源码
- Python源码
- Asm源码
- Pascal源码
- Borland C++源码
- Others源码
- SQL源码
- VBScript源码
- JavaScript源码
- ASP/ASPX源码
- C#源码
- Flash/ActionScript源码
- matlab源码
- PowerBuilder源码
- LabView源码
- Flex源码
- MathCAD源码
- VBA源码
- IDL源码
- Lisp/Scheme源码
- VHDL源码
- Objective-C源码
- Fortran源码
- tcl/tk源码
- QT源码
graphicsmaster.c
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:7k
源码类别:
Linux/Unix编程
开发平台:
Unix_Linux
- /*
- * linux/arch/arm/mach-sa1100/graphicsmaster.c
- *
- * Pieces specific to the GraphicsMaster board
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
- #include <linux/init.h>
- #include <linux/sched.h>
- #include <linux/interrupt.h>
- #include <linux/ptrace.h>
- #include <asm/hardware.h>
- #include <asm/setup.h>
- #include <asm/irq.h>
- #include <asm/mach/irq.h>
- #include <asm/mach/arch.h>
- #include <asm/mach/map.h>
- #include <asm/mach/serial_sa1100.h>
- #include <asm/arch/irq.h>
- #include "generic.h"
- #include "sa1111.h"
- static int __init graphicsmaster_init(void)
- {
- int ret;
- if (!machine_is_graphicsmaster())
- return -ENODEV;
- /*
- * Ensure that the memory bus request/grant signals are setup,
- * and the grant is held in its inactive state
- */
- sa1110_mb_disable();
- /*
- * Probe for SA1111.
- */
- ret = sa1111_probe(ADS_SA1111_BASE);
- if (ret < 0)
- return ret;
- /*
- * We found it. Wake the chip up.
- */
- sa1111_wake();
- /*
- * The SDRAM configuration of the SA1110 and the SA1111 must
- * match. This is very important to ensure that SA1111 accesses
- * don't corrupt the SDRAM. Note that this ungates the SA1111's
- * MBGNT signal, so we must have called sa1110_mb_disable()
- * beforehand.
- */
- sa1111_configure_smc(1,
- FExtr(MDCNFG, MDCNFG_SA1110_DRAC0),
- FExtr(MDCNFG, MDCNFG_SA1110_TDL0));
- /*
- * Enable PWM control for LCD
- */
- SKPCR |= SKPCR_PWMCLKEN;
- SKPWM0 = 0x7F; // VEE
- SKPEN0 = 1;
- SKPWM1 = 0x01; // Backlight
- SKPEN1 = 1;
- /*
- * We only need to turn on DCLK whenever we want to use the
- * DMA. It can otherwise be held firmly in the off position.
- */
- SKPCR |= SKPCR_DCLKEN;
- /*
- * Enable the SA1110 memory bus request and grant signals.
- */
- sa1110_mb_enable();
- sa1111_init_irq(ADS_EXT_IRQ(0));
- return 0;
- }
- __initcall(graphicsmaster_init);
- /*
- * Handlers for GraphicsMaster's external IRQ logic
- */
- static void ADS_IRQ_demux( int irq, void *dev_id, struct pt_regs *regs )
- {
- int i;
- while( (irq = ADS_INT_ST1 | (ADS_INT_ST2 << 8)) ){
- for( i = 0; i < 16; i++ )
- if( irq & (1<<i) ) {
- do_IRQ( ADS_EXT_IRQ(i), regs );
- }
- }
- }
- static struct irqaction ADS_ext_irq = {
- name: "ADS_ext_IRQ",
- handler: ADS_IRQ_demux,
- flags: SA_INTERRUPT
- };
- static void ADS_mask_and_ack_irq0(unsigned int irq)
- {
- int mask = (1 << (irq - ADS_EXT_IRQ(0)));
- ADS_INT_EN1 &= ~mask;
- ADS_INT_ST1 = mask;
- }
- static void ADS_mask_irq0(unsigned int irq)
- {
- ADS_INT_ST1 = (1 << (irq - ADS_EXT_IRQ(0)));
- }
- static void ADS_unmask_irq0(unsigned int irq)
- {
- ADS_INT_EN1 |= (1 << (irq - ADS_EXT_IRQ(0)));
- }
- static void ADS_mask_and_ack_irq1(unsigned int irq)
- {
- int mask = (1 << (irq - ADS_EXT_IRQ(8)));
- ADS_INT_EN2 &= ~mask;
- ADS_INT_ST2 = mask;
- }
- static void ADS_mask_irq1(unsigned int irq)
- {
- ADS_INT_ST2 = (1 << (irq - ADS_EXT_IRQ(8)));
- }
- static void ADS_unmask_irq1(unsigned int irq)
- {
- ADS_INT_EN2 |= (1 << (irq - ADS_EXT_IRQ(8)));
- }
- static void __init graphicsmaster_init_irq(void)
- {
- int irq;
- /* First the standard SA1100 IRQs */
- sa1100_init_irq();
- /* disable all IRQs */
- ADS_INT_EN1 = 0;
- ADS_INT_EN2 = 0;
- /* clear all IRQs */
- ADS_INT_ST1 = 0xff;
- ADS_INT_ST2 = 0xff;
- for (irq = ADS_EXT_IRQ(0); irq <= ADS_EXT_IRQ(7); irq++) {
- irq_desc[irq].valid = 1;
- irq_desc[irq].probe_ok = 1;
- irq_desc[irq].mask_ack = ADS_mask_and_ack_irq0;
- irq_desc[irq].mask = ADS_mask_irq0;
- irq_desc[irq].unmask = ADS_unmask_irq0;
- }
- for (irq = ADS_EXT_IRQ(8); irq <= ADS_EXT_IRQ(15); irq++) {
- irq_desc[irq].valid = 1;
- irq_desc[irq].probe_ok = 1;
- irq_desc[irq].mask_ack = ADS_mask_and_ack_irq1;
- irq_desc[irq].mask = ADS_mask_irq1;
- irq_desc[irq].unmask = ADS_unmask_irq1;
- }
- set_GPIO_IRQ_edge(GPIO_GPIO0, GPIO_FALLING_EDGE);
- setup_arm_irq( IRQ_GPIO0, &ADS_ext_irq );
- }
- /*
- * Initialization fixup
- */
- static void __init
- fixup_graphicsmaster(struct machine_desc *desc, struct param_struct *params,
- char **cmdline, struct meminfo *mi)
- {
- SET_BANK( 0, 0xc0000000, 16*1024*1024 );
- mi->nr_banks = 1;
- SET_BANK( 1, 0xc8000000, 16*1024*1024 );
- mi->nr_banks = 2;
- ROOT_DEV = MKDEV(RAMDISK_MAJOR,0);
- setup_ramdisk( 1, 0, 0, 8192 );
- setup_initrd( __phys_to_virt(0xc0800000), 4*1024*1024 );
- }
- static struct map_desc graphicsmaster_io_desc[] __initdata = {
- /* virtual physical length domain r w c b */
- { 0xe8000000, 0x08000000, 0x02000000, DOMAIN_IO, 0, 1, 0, 0 }, /* Flash bank 1 */
- { 0xf0000000, 0x10000000, 0x00400000, DOMAIN_IO, 0, 1, 0, 0 }, /* CPLD */
- { 0xf1000000, 0x40000000, 0x00400000, DOMAIN_IO, 0, 1, 0, 0 }, /* CAN */
- { 0xf4000000, 0x18000000, 0x00800000, DOMAIN_IO, 0, 1, 0, 0 }, /* SA-1111 */
- LAST_DESC
- };
- static int graphicsmaster_uart_open(struct uart_port *port, struct uart_info *info)
- {
- int ret = 0;
- if (port->mapbase == _Ser1UTCR0) {
- Ser1SDCR0 |= SDCR0_UART;
- /* Set RTS Output */
- GPSR = GPIO_GPIO15;
- }
- else if (port->mapbase == _Ser2UTCR0) {
- Ser2UTCR4 = Ser2HSCR0 = 0;
- /* Set RTS Output */
- GPSR = GPIO_GPIO17;
- }
- else if (port->mapbase == _Ser3UTCR0) {
- /* Set RTS Output */
- GPSR = GPIO_GPIO19;
- }
- return ret;
- }
- static u_int graphicsmaster_get_mctrl(struct uart_port *port)
- {
- u_int result = TIOCM_CD | TIOCM_DSR;
- if (port->mapbase == _Ser1UTCR0) {
- if (!(GPLR & GPIO_GPIO14))
- result |= TIOCM_CTS;
- } else if (port->mapbase == _Ser2UTCR0) {
- if (!(GPLR & GPIO_GPIO16))
- result |= TIOCM_CTS;
- } else if (port->mapbase == _Ser3UTCR0) {
- if (!(GPLR & GPIO_GPIO17))
- result |= TIOCM_CTS;
- } else {
- result = TIOCM_CTS;
- }
- return result;
- }
- static void graphicsmaster_set_mctrl(struct uart_port *port, u_int mctrl)
- {
- if (port->mapbase == _Ser1UTCR0) {
- if (mctrl & TIOCM_RTS)
- GPCR = GPIO_GPIO15;
- else
- GPSR = GPIO_GPIO15;
- } else if (port->mapbase == _Ser2UTCR0) {
- if (mctrl & TIOCM_RTS)
- GPCR = GPIO_GPIO17;
- else
- GPSR = GPIO_GPIO17;
- } else if (port->mapbase == _Ser3UTCR0) {
- if (mctrl & TIOCM_RTS)
- GPCR = GPIO_GPIO19;
- else
- GPSR = GPIO_GPIO19;
- }
- }
- static void
- graphicsmaster_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
- {
- if (!state) {
- /* make serial ports work ... */
- Ser2UTCR4 = 0;
- Ser2HSCR0 = 0;
- Ser1SDCR0 |= SDCR0_UART;
- }
- }
- static struct sa1100_port_fns graphicsmaster_port_fns __initdata = {
- open: graphicsmaster_uart_open,
- get_mctrl: graphicsmaster_get_mctrl,
- set_mctrl: graphicsmaster_set_mctrl,
- pm: graphicsmaster_uart_pm,
- };
- static void __init graphicsmaster_map_io(void)
- {
- sa1100_map_io();
- iotable_init(graphicsmaster_io_desc);
- sa1100_register_uart_fns(&graphicsmaster_port_fns);
- sa1100_register_uart(0, 3);
- sa1100_register_uart(1, 1);
- sa1100_register_uart(2, 2);
- /* set GPDR now */
- GPDR |= GPIO_GPIO15 | GPIO_GPIO17 | GPIO_GPIO19;
- GPDR &= ~(GPIO_GPIO14 | GPIO_GPIO16 | GPIO_GPIO18);
- }
- MACHINE_START(GRAPHICSMASTER, "ADS GraphicsMaster")
- BOOT_MEM(0xc0000000, 0x80000000, 0xf8000000)
- FIXUP(fixup_graphicsmaster)
- MAPIO(graphicsmaster_map_io)
- INITIRQ(graphicsmaster_init_irq)
- MACHINE_END