2 * arch/arm/mach-ns9xxx/board-a9m9750dev.c
4 * Copyright (C) 2006,2007 by Digi International Inc.
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 as published by
9 * the Free Software Foundation.
11 #include <linux/platform_device.h>
12 #include <linux/serial_8250.h>
13 #include <linux/irq.h>
15 #include <asm/mach/map.h>
17 #include <asm/arch-ns9xxx/board.h>
18 #include <asm/arch-ns9xxx/regs-sys.h>
19 #include <asm/arch-ns9xxx/regs-mem.h>
20 #include <asm/arch-ns9xxx/regs-bbu.h>
21 #include <asm/arch-ns9xxx/regs-board-a9m9750dev.h>
23 #include "board-a9m9750dev.h"
25 static struct map_desc board_a9m9750dev_io_desc[] __initdata = {
27 .virtual = io_p2v(NS9XXX_CSxSTAT_PHYS(0)),
28 .pfn = __phys_to_pfn(NS9XXX_CSxSTAT_PHYS(0)),
29 .length = NS9XXX_CS0STAT_LENGTH,
34 void __init board_a9m9750dev_map_io(void)
36 iotable_init(board_a9m9750dev_io_desc,
37 ARRAY_SIZE(board_a9m9750dev_io_desc));
40 static void a9m9750dev_fpga_ack_irq(unsigned int irq)
45 static void a9m9750dev_fpga_mask_irq(unsigned int irq)
47 FPGA_IER &= ~(1 << (irq - FPGA_IRQ(0)));
50 static void a9m9750dev_fpga_maskack_irq(unsigned int irq)
52 a9m9750dev_fpga_mask_irq(irq);
53 a9m9750dev_fpga_ack_irq(irq);
56 static void a9m9750dev_fpga_unmask_irq(unsigned int irq)
58 FPGA_IER |= 1 << (irq - FPGA_IRQ(0));
61 static struct irq_chip a9m9750dev_fpga_chip = {
62 .ack = a9m9750dev_fpga_ack_irq,
63 .mask = a9m9750dev_fpga_mask_irq,
64 .mask_ack = a9m9750dev_fpga_maskack_irq,
65 .unmask = a9m9750dev_fpga_unmask_irq,
68 static void a9m9750dev_fpga_demux_handler(unsigned int irq,
69 struct irq_desc *desc)
73 desc->chip->mask_ack(irq);
76 int irqno = fls(stat) - 1;
77 struct irq_desc *fpgadesc;
79 stat &= ~(1 << irqno);
81 fpgadesc = irq_desc + FPGA_IRQ(irqno);
83 desc_handle_irq(FPGA_IRQ(irqno), fpgadesc);
86 desc->chip->unmask(irq);
89 void __init board_a9m9750dev_init_irq(void)
95 * configure gpio for IRQ_EXT2
96 * use GPIO 11, because GPIO 32 is used for the LCD
98 /* XXX: proper GPIO handling */
99 BBU_GCONFb1(1) &= ~0x2000;
101 for (i = FPGA_IRQ(0); i <= FPGA_IRQ(7); ++i) {
102 set_irq_chip(i, &a9m9750dev_fpga_chip);
103 set_irq_handler(i, handle_level_irq);
104 set_irq_flags(i, IRQF_VALID);
107 /* IRQ_EXT2: level sensitive + active low */
109 REGSET(reg, SYS_EIC, PLTY, AL);
110 REGSET(reg, SYS_EIC, LVEDG, LEVEL);
113 set_irq_chained_handler(IRQ_EXT2,
114 a9m9750dev_fpga_demux_handler);
117 static struct plat_serial8250_port board_a9m9750dev_serial8250_port[] = {
119 .iobase = FPGA_UARTA_BASE,
120 .membase = (unsigned char*)FPGA_UARTA_BASE,
121 .mapbase = FPGA_UARTA_BASE,
122 .irq = IRQ_FPGA_UARTA,
126 .flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ,
128 .iobase = FPGA_UARTB_BASE,
129 .membase = (unsigned char*)FPGA_UARTB_BASE,
130 .mapbase = FPGA_UARTB_BASE,
131 .irq = IRQ_FPGA_UARTB,
135 .flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ,
137 .iobase = FPGA_UARTC_BASE,
138 .membase = (unsigned char*)FPGA_UARTC_BASE,
139 .mapbase = FPGA_UARTC_BASE,
140 .irq = IRQ_FPGA_UARTC,
144 .flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ,
146 .iobase = FPGA_UARTD_BASE,
147 .membase = (unsigned char*)FPGA_UARTD_BASE,
148 .mapbase = FPGA_UARTD_BASE,
149 .irq = IRQ_FPGA_UARTD,
153 .flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ,
159 static struct platform_device board_a9m9750dev_serial_device = {
160 .name = "serial8250",
162 .platform_data = board_a9m9750dev_serial8250_port,
166 static struct platform_device *board_a9m9750dev_devices[] __initdata = {
167 &board_a9m9750dev_serial_device,
170 void __init board_a9m9750dev_init_machine(void)
174 /* setup static CS0: memory base ... */
175 REGSETIM(SYS_SMCSSMB(0), SYS_SMCSSMB, CSxB,
176 NS9XXX_CSxSTAT_PHYS(0) >> 12);
179 reg = SYS_SMCSSMM(0);
180 REGSETIM(reg, SYS_SMCSSMM, CSxM, 0xfffff);
181 REGSET(reg, SYS_SMCSSMM, CSEx, EN);
182 SYS_SMCSSMM(0) = reg;
184 /* setup static CS0: memory configuration */
186 REGSET(reg, MEM_SMC, PSMC, OFF);
187 REGSET(reg, MEM_SMC, BSMC, OFF);
188 REGSET(reg, MEM_SMC, EW, OFF);
189 REGSET(reg, MEM_SMC, PB, 1);
190 REGSET(reg, MEM_SMC, PC, AL);
191 REGSET(reg, MEM_SMC, PM, DIS);
192 REGSET(reg, MEM_SMC, MW, 8);
195 /* setup static CS0: timing */
201 platform_add_devices(board_a9m9750dev_devices,
202 ARRAY_SIZE(board_a9m9750dev_devices));