Linux 5.11-rc3
[sfrench/cifs-2.6.git] / arch / mips / alchemy / board-xxs1500.c
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * BRIEF MODULE DESCRIPTION
4  *      MyCable XXS1500 board support
5  *
6  * Copyright 2003, 2008 MontaVista Software Inc.
7  * Author: MontaVista Software, Inc. <source@mvista.com>
8  */
9
10 #include <linux/kernel.h>
11 #include <linux/init.h>
12 #include <linux/interrupt.h>
13 #include <linux/platform_device.h>
14 #include <linux/gpio.h>
15 #include <linux/delay.h>
16 #include <linux/pm.h>
17 #include <asm/bootinfo.h>
18 #include <asm/reboot.h>
19 #include <asm/setup.h>
20 #include <asm/mach-au1x00/au1000.h>
21 #include <prom.h>
22
23 const char *get_system_type(void)
24 {
25         return "XXS1500";
26 }
27
28 void prom_putchar(char c)
29 {
30         alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c);
31 }
32
33 static void xxs1500_reset(char *c)
34 {
35         /* Jump to the reset vector */
36         __asm__ __volatile__("jr\t%0" : : "r"(0xbfc00000));
37 }
38
39 static void xxs1500_power_off(void)
40 {
41         while (1)
42                 asm volatile (
43                 "       .set    mips32                                  \n"
44                 "       wait                                            \n"
45                 "       .set    mips0                                   \n");
46 }
47
48 void __init board_setup(void)
49 {
50         u32 pin_func;
51
52         pm_power_off = xxs1500_power_off;
53         _machine_halt = xxs1500_power_off;
54         _machine_restart = xxs1500_reset;
55
56         alchemy_gpio1_input_enable();
57         alchemy_gpio2_enable();
58
59         /* Set multiple use pins (UART3/GPIO) to UART (it's used as UART too) */
60         pin_func  = alchemy_rdsys(AU1000_SYS_PINFUNC) & ~SYS_PF_UR3;
61         pin_func |= SYS_PF_UR3;
62         alchemy_wrsys(pin_func, AU1000_SYS_PINFUNC);
63
64         /* Enable UART */
65         alchemy_uart_enable(AU1000_UART3_PHYS_ADDR);
66         /* Enable DTR (MCR bit 0) = USB power up */
67         __raw_writel(1, (void __iomem *)KSEG1ADDR(AU1000_UART3_PHYS_ADDR + 0x18));
68         wmb();
69 }
70
71 /******************************************************************************/
72
73 static struct resource xxs1500_pcmcia_res[] = {
74         {
75                 .name   = "pcmcia-io",
76                 .flags  = IORESOURCE_MEM,
77                 .start  = AU1000_PCMCIA_IO_PHYS_ADDR,
78                 .end    = AU1000_PCMCIA_IO_PHYS_ADDR + 0x000400000 - 1,
79         },
80         {
81                 .name   = "pcmcia-attr",
82                 .flags  = IORESOURCE_MEM,
83                 .start  = AU1000_PCMCIA_ATTR_PHYS_ADDR,
84                 .end    = AU1000_PCMCIA_ATTR_PHYS_ADDR + 0x000400000 - 1,
85         },
86         {
87                 .name   = "pcmcia-mem",
88                 .flags  = IORESOURCE_MEM,
89                 .start  = AU1000_PCMCIA_MEM_PHYS_ADDR,
90                 .end    = AU1000_PCMCIA_MEM_PHYS_ADDR + 0x000400000 - 1,
91         },
92 };
93
94 static struct platform_device xxs1500_pcmcia_dev = {
95         .name           = "xxs1500_pcmcia",
96         .id             = -1,
97         .num_resources  = ARRAY_SIZE(xxs1500_pcmcia_res),
98         .resource       = xxs1500_pcmcia_res,
99 };
100
101 static struct platform_device *xxs1500_devs[] __initdata = {
102         &xxs1500_pcmcia_dev,
103 };
104
105 static int __init xxs1500_dev_init(void)
106 {
107         irq_set_irq_type(AU1500_GPIO204_INT, IRQ_TYPE_LEVEL_HIGH);
108         irq_set_irq_type(AU1500_GPIO201_INT, IRQ_TYPE_LEVEL_LOW);
109         irq_set_irq_type(AU1500_GPIO202_INT, IRQ_TYPE_LEVEL_LOW);
110         irq_set_irq_type(AU1500_GPIO203_INT, IRQ_TYPE_LEVEL_LOW);
111         irq_set_irq_type(AU1500_GPIO205_INT, IRQ_TYPE_LEVEL_LOW);
112         irq_set_irq_type(AU1500_GPIO207_INT, IRQ_TYPE_LEVEL_LOW);
113
114         irq_set_irq_type(AU1500_GPIO0_INT, IRQ_TYPE_LEVEL_LOW);
115         irq_set_irq_type(AU1500_GPIO1_INT, IRQ_TYPE_LEVEL_LOW);
116         irq_set_irq_type(AU1500_GPIO2_INT, IRQ_TYPE_LEVEL_LOW);
117         irq_set_irq_type(AU1500_GPIO3_INT, IRQ_TYPE_LEVEL_LOW);
118         irq_set_irq_type(AU1500_GPIO4_INT, IRQ_TYPE_LEVEL_LOW); /* CF irq */
119         irq_set_irq_type(AU1500_GPIO5_INT, IRQ_TYPE_LEVEL_LOW);
120
121         return platform_add_devices(xxs1500_devs,
122                                     ARRAY_SIZE(xxs1500_devs));
123 }
124 device_initcall(xxs1500_dev_init);