xref: /openbmc/linux/arch/arm/mach-nspire/nspire.c (revision 12eb4683)
1 /*
2  *	linux/arch/arm/mach-nspire/nspire.c
3  *
4  *	Copyright (C) 2013 Daniel Tang <tangrs@tangrs.id.au>
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2, as
8  * published by the Free Software Foundation.
9  *
10  */
11 #include <linux/init.h>
12 #include <linux/of_irq.h>
13 #include <linux/of_address.h>
14 #include <linux/of_platform.h>
15 #include <linux/irqchip.h>
16 #include <linux/irqchip/arm-vic.h>
17 #include <linux/clkdev.h>
18 #include <linux/amba/bus.h>
19 #include <linux/amba/clcd.h>
20 
21 #include <asm/mach/arch.h>
22 #include <asm/mach-types.h>
23 #include <asm/mach/map.h>
24 
25 #include <asm/hardware/timer-sp.h>
26 
27 #include "mmio.h"
28 #include "clcd.h"
29 
30 static const char *nspire_dt_match[] __initconst = {
31 	"ti,nspire",
32 	"ti,nspire-cx",
33 	"ti,nspire-tp",
34 	"ti,nspire-clp",
35 	NULL,
36 };
37 
38 static void __init nspire_map_io(void)
39 {
40 	debug_ll_io_init();
41 }
42 
43 static struct clcd_board nspire_clcd_data = {
44 	.name		= "LCD",
45 	.caps		= CLCD_CAP_5551 | CLCD_CAP_565,
46 	.check		= clcdfb_check,
47 	.decode		= clcdfb_decode,
48 	.setup		= nspire_clcd_setup,
49 	.mmap		= nspire_clcd_mmap,
50 	.remove		= nspire_clcd_remove,
51 };
52 
53 
54 static struct of_dev_auxdata nspire_auxdata[] __initdata = {
55 	OF_DEV_AUXDATA("arm,pl111", NSPIRE_LCD_PHYS_BASE,
56 			NULL, &nspire_clcd_data),
57 	{ }
58 };
59 
60 static void __init nspire_init(void)
61 {
62 	of_platform_populate(NULL, of_default_bus_match_table,
63 			nspire_auxdata, NULL);
64 }
65 
66 static void nspire_restart(char mode, const char *cmd)
67 {
68 	void __iomem *base = ioremap(NSPIRE_MISC_PHYS_BASE, SZ_4K);
69 	if (!base)
70 		return;
71 
72 	writel(2, base + NSPIRE_MISC_HWRESET);
73 }
74 
75 DT_MACHINE_START(NSPIRE, "TI-NSPIRE")
76 	.dt_compat	= nspire_dt_match,
77 	.map_io		= nspire_map_io,
78 	.init_machine	= nspire_init,
79 	.restart	= nspire_restart,
80 MACHINE_END
81