1/*
2 * arch/arm/mach-imx/mm-imx21.c
3 *
4 * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
18 * MA 02110-1301, USA.
19 */
20
21#include <linux/mm.h>
22#include <linux/init.h>
23#include <linux/pinctrl/machine.h>
24#include <asm/pgtable.h>
25#include <asm/mach/map.h>
26
27#include "common.h"
28#include "devices/devices-common.h"
29#include "hardware.h"
30#include "iomux-v1.h"
31
32/* MX21 memory map definition */
33static struct map_desc imx21_io_desc[] __initdata = {
34	/*
35	 * this fixed mapping covers:
36	 * - AIPI1
37	 * - AIPI2
38	 * - AITC
39	 * - ROM Patch
40	 * - and some reserved space
41	 */
42	imx_map_entry(MX21, AIPI, MT_DEVICE),
43	/*
44	 * this fixed mapping covers:
45	 * - CSI
46	 * - ATA
47	 */
48	imx_map_entry(MX21, SAHB1, MT_DEVICE),
49	/*
50	 * this fixed mapping covers:
51	 * - EMI
52	 */
53	imx_map_entry(MX21, X_MEMC, MT_DEVICE),
54};
55
56/*
57 * Initialize the memory map. It is called during the
58 * system startup to create static physical to virtual
59 * memory map for the IO modules.
60 */
61void __init mx21_map_io(void)
62{
63	iotable_init(imx21_io_desc, ARRAY_SIZE(imx21_io_desc));
64}
65
66void __init imx21_init_early(void)
67{
68	mxc_set_cpu_type(MXC_CPU_MX21);
69	imx_iomuxv1_init(MX21_IO_ADDRESS(MX21_GPIO_BASE_ADDR),
70			MX21_NUM_GPIO_PORT);
71}
72
73void __init mx21_init_irq(void)
74{
75	mxc_init_irq(MX21_IO_ADDRESS(MX21_AVIC_BASE_ADDR));
76}
77
78static const struct resource imx21_audmux_res[] __initconst = {
79	DEFINE_RES_MEM(MX21_AUDMUX_BASE_ADDR, SZ_4K),
80};
81
82void __init imx21_soc_init(void)
83{
84	mxc_arch_reset_init(MX21_IO_ADDRESS(MX21_WDOG_BASE_ADDR));
85	mxc_device_init();
86
87	mxc_register_gpio("imx21-gpio", 0, MX21_GPIO1_BASE_ADDR, SZ_256, MX21_INT_GPIO, 0);
88	mxc_register_gpio("imx21-gpio", 1, MX21_GPIO2_BASE_ADDR, SZ_256, MX21_INT_GPIO, 0);
89	mxc_register_gpio("imx21-gpio", 2, MX21_GPIO3_BASE_ADDR, SZ_256, MX21_INT_GPIO, 0);
90	mxc_register_gpio("imx21-gpio", 3, MX21_GPIO4_BASE_ADDR, SZ_256, MX21_INT_GPIO, 0);
91	mxc_register_gpio("imx21-gpio", 4, MX21_GPIO5_BASE_ADDR, SZ_256, MX21_INT_GPIO, 0);
92	mxc_register_gpio("imx21-gpio", 5, MX21_GPIO6_BASE_ADDR, SZ_256, MX21_INT_GPIO, 0);
93
94	pinctrl_provide_dummies();
95	imx_add_imx_dma("imx21-dma", MX21_DMA_BASE_ADDR,
96			MX21_INT_DMACH0, 0); /* No ERR irq */
97	platform_device_register_simple("imx21-audmux", 0, imx21_audmux_res,
98					ARRAY_SIZE(imx21_audmux_res));
99}
100