2 * linux/arch/arm/mach-sa1100/badge4.c
4 * BadgePAD 4 specific initialization
6 * Tim Connors <connors@hpl.hp.com>
7 * Christopher Hoover <ch@hpl.hp.com>
9 * Copyright (C) 2002 Hewlett-Packard Company
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
16 #include <linux/module.h>
17 #include <linux/init.h>
18 #include <linux/kernel.h>
19 #include <linux/device.h>
20 #include <linux/delay.h>
21 #include <linux/tty.h>
22 #include <linux/errno.h>
24 #include <asm/hardware.h>
25 #include <asm/mach-types.h>
26 #include <asm/setup.h>
27 #include <asm/arch/irqs.h>
29 #include <asm/mach/arch.h>
30 #include <asm/mach/map.h>
31 #include <asm/hardware/sa1111.h>
32 #include <asm/mach/serial_sa1100.h>
34 #include <asm/arch/badge4.h>
38 static struct resource sa1111_resources[] = {
40 .start = BADGE4_SA1111_BASE,
41 .end = BADGE4_SA1111_BASE + 0x00001fff,
42 .flags = IORESOURCE_MEM,
45 .start = BADGE4_IRQ_GPIO_SA1111,
46 .end = BADGE4_IRQ_GPIO_SA1111,
47 .flags = IORESOURCE_IRQ,
51 static u64 sa1111_dmamask = 0xffffffffUL;
53 static struct platform_device sa1111_device = {
57 .dma_mask = &sa1111_dmamask;
58 .coherent_dma_mask = 0xffffffff,
60 .num_resources = ARRAY_SIZE(sa1111_resources),
61 .resource = sa1111_resources,
64 static struct platform_device *devices[] __initdata = {
68 static int __init badge4_sa1111_init(void)
71 * Ensure that the memory bus request/grant signals are setup,
72 * and the grant is held in its inactive state
79 return platform_add_devices(devices, ARRAY_SIZE(devices));
83 static int five_v_on __initdata = 0;
85 static int __init five_v_on_setup(char *ignore)
90 __setup("five_v_on", five_v_on_setup);
93 static int __init badge4_init(void)
97 if (!machine_is_badge4())
101 GPCR = (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 |
102 BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 |
103 BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 |
104 BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 |
105 BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID |
106 BADGE4_GPIO_GPC_VID);
107 GPDR &= ~BADGE4_GPIO_INT_VID;
108 GPDR |= (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 |
109 BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 |
110 BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 |
111 BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 |
112 BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID |
113 BADGE4_GPIO_GPC_VID);
116 GPCR = (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL);
117 GPDR |= (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL);
120 GPCR = (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2);
121 GPDR |= (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2);
123 /* CPLD muxsel0 input for mux/adc chip select */
124 GPCR = BADGE4_GPIO_MUXSEL0;
125 GPDR |= BADGE4_GPIO_MUXSEL0;
127 /* test points: J5, J6 as inputs, J7 outputs */
128 GPDR &= ~(BADGE4_GPIO_TESTPT_J5 | BADGE4_GPIO_TESTPT_J6);
129 GPCR = BADGE4_GPIO_TESTPT_J7;
130 GPDR |= BADGE4_GPIO_TESTPT_J7;
132 /* 5V supply rail. */
133 GPCR = BADGE4_GPIO_PCMEN5V; /* initially off */
134 GPDR |= BADGE4_GPIO_PCMEN5V;
136 /* CPLD sdram type inputs; set up by blob */
137 //GPDR |= (BADGE4_GPIO_SDTYP1 | BADGE4_GPIO_SDTYP0);
138 printk(KERN_DEBUG __FILE__ ": SDRAM CPLD typ1=%d typ0=%d\n",
139 !!(GPLR & BADGE4_GPIO_SDTYP1),
140 !!(GPLR & BADGE4_GPIO_SDTYP0));
142 /* SA1111 reset pin; set up by blob */
143 //GPSR = BADGE4_GPIO_SA1111_NRST;
144 //GPDR |= BADGE4_GPIO_SA1111_NRST;
147 /* power management cruft */
153 PWER |= PWER_GPIO26; /* wake up on an edge from TESTPT_J5 */
154 PWER |= PWER_RTC; /* wake up if rtc fires */
156 /* drive sa1111_nrst during sleep */
157 PGSR |= BADGE4_GPIO_SA1111_NRST;
158 /* drive CPLD as is during sleep */
159 PGSR |= (GPLR & (BADGE4_GPIO_SDTYP0|BADGE4_GPIO_SDTYP1));
162 /* Now bring up the SA-1111. */
163 ret = badge4_sa1111_init();
166 "%s: SA-1111 initialization failed (%d)\n",
170 /* maybe turn on 5v0 from the start */
171 badge4_set_5V(BADGE4_5V_INITIALLY, five_v_on);
176 arch_initcall(badge4_init);
179 static unsigned badge4_5V_bitmap = 0;
181 void badge4_set_5V(unsigned subsystem, int on)
184 unsigned old_5V_bitmap;
186 local_irq_save(flags);
188 old_5V_bitmap = badge4_5V_bitmap;
191 badge4_5V_bitmap |= subsystem;
193 badge4_5V_bitmap &= ~subsystem;
196 /* detect on->off and off->on transitions */
197 if ((!old_5V_bitmap) && (badge4_5V_bitmap)) {
198 /* was off, now on */
199 printk(KERN_INFO "%s: enabling 5V supply rail\n", __FUNCTION__);
200 GPSR = BADGE4_GPIO_PCMEN5V;
201 } else if ((old_5V_bitmap) && (!badge4_5V_bitmap)) {
202 /* was on, now off */
203 printk(KERN_INFO "%s: disabling 5V supply rail\n", __FUNCTION__);
204 GPCR = BADGE4_GPIO_PCMEN5V;
207 local_irq_restore(flags);
209 EXPORT_SYMBOL(badge4_set_5V);
212 static struct map_desc badge4_io_desc[] __initdata = {
213 /* virtual physical length type */
214 {0xf1000000, 0x08000000, 0x00100000, MT_DEVICE },/* SRAM bank 1 */
215 {0xf2000000, 0x10000000, 0x00100000, MT_DEVICE },/* SRAM bank 2 */
216 {0xf4000000, 0x48000000, 0x00100000, MT_DEVICE } /* SA-1111 */
220 badge4_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
223 Ser1SDCR0 |= SDCR0_UART;
227 static struct sa1100_port_fns badge4_port_fns __initdata = {
228 //.get_mctrl = badge4_get_mctrl,
229 //.set_mctrl = badge4_set_mctrl,
230 .pm = badge4_uart_pm,
233 static void __init badge4_map_io(void)
236 iotable_init(badge4_io_desc, ARRAY_SIZE(badge4_io_desc));
238 sa1100_register_uart_fns(&badge4_port_fns);
239 sa1100_register_uart(0, 3);
240 sa1100_register_uart(1, 1);
243 MACHINE_START(BADGE4, "Hewlett-Packard Laboratories BadgePAD 4")
244 BOOT_MEM(0xc0000000, 0x80000000, 0xf8000000)
245 BOOT_PARAMS(0xc0000100)
247 INITIRQ(sa1100_init_irq)
248 INITTIME(sa1100_init_time)