summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-mmp/pxa910.c
blob: 453f8f7758bff45b046dc1cf06e52c8ccfa8b125 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
/*
 *  linux/arch/arm/mach-mmp/pxa910.c
 *
 *  Code specific to PXA910
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/list.h>
#include <linux/io.h>

#include <asm/mach/time.h>
#include <mach/addr-map.h>
#include <mach/regs-apbc.h>
#include <mach/regs-apmu.h>
#include <mach/cputype.h>
#include <mach/irqs.h>
#include <mach/gpio.h>
#include <mach/dma.h>
#include <mach/mfp.h>
#include <mach/devices.h>

#include "common.h"
#include "clock.h"

#define MFPR_VIRT_BASE	(APB_VIRT_BASE + 0x1e000)

static struct mfp_addr_map pxa910_mfp_addr_map[] __initdata =
{
	MFP_ADDR_X(GPIO0, GPIO54, 0xdc),
	MFP_ADDR_X(GPIO67, GPIO98, 0x1b8),
	MFP_ADDR_X(GPIO100, GPIO109, 0x238),

	MFP_ADDR(GPIO123, 0xcc),
	MFP_ADDR(GPIO124, 0xd0),

	MFP_ADDR(DF_IO0, 0x40),
	MFP_ADDR(DF_IO1, 0x3c),
	MFP_ADDR(DF_IO2, 0x38),
	MFP_ADDR(DF_IO3, 0x34),
	MFP_ADDR(DF_IO4, 0x30),
	MFP_ADDR(DF_IO5, 0x2c),
	MFP_ADDR(DF_IO6, 0x28),
	MFP_ADDR(DF_IO7, 0x24),
	MFP_ADDR(DF_IO8, 0x20),
	MFP_ADDR(DF_IO9, 0x1c),
	MFP_ADDR(DF_IO10, 0x18),
	MFP_ADDR(DF_IO11, 0x14),
	MFP_ADDR(DF_IO12, 0x10),
	MFP_ADDR(DF_IO13, 0xc),
	MFP_ADDR(DF_IO14, 0x8),
	MFP_ADDR(DF_IO15, 0x4),

	MFP_ADDR(DF_nCS0_SM_nCS2, 0x44),
	MFP_ADDR(DF_nCS1_SM_nCS3, 0x48),
	MFP_ADDR(SM_nCS0, 0x4c),
	MFP_ADDR(SM_nCS1, 0x50),
	MFP_ADDR(DF_WEn, 0x54),
	MFP_ADDR(DF_REn, 0x58),
	MFP_ADDR(DF_CLE_SM_OEn, 0x5c),
	MFP_ADDR(DF_ALE_SM_WEn, 0x60),
	MFP_ADDR(SM_SCLK, 0x64),
	MFP_ADDR(DF_RDY0, 0x68),
	MFP_ADDR(SM_BE0, 0x6c),
	MFP_ADDR(SM_BE1, 0x70),
	MFP_ADDR(SM_ADV, 0x74),
	MFP_ADDR(DF_RDY1, 0x78),
	MFP_ADDR(SM_ADVMUX, 0x7c),
	MFP_ADDR(SM_RDY, 0x80),

	MFP_ADDR_X(MMC1_DAT7, MMC1_WP, 0x84),

	MFP_ADDR_END,
};

#define APMASK(i)	(GPIO_REGS_VIRT + BANK_OFF(i) + 0x09c)

static void __init pxa910_init_gpio(void)
{
	int i;

	/* enable GPIO clock */
	__raw_writel(APBC_APBCLK | APBC_FNCLK, APBC_PXA910_GPIO);

	/* unmask GPIO edge detection for all 4 banks - APMASKx */
	for (i = 0; i < 4; i++)
		__raw_writel(0xffffffff, APMASK(i));

	pxa_init_gpio(IRQ_PXA910_AP_GPIO, 0, 127, NULL);
}

void __init pxa910_init_irq(void)
{
	icu_init_irq();
	pxa910_init_gpio();
}

/* APB peripheral clocks */
static APBC_CLK(uart1, PXA910_UART0, 1, 14745600);
static APBC_CLK(uart2, PXA910_UART1, 1, 14745600);

/* device and clock bindings */
static struct clk_lookup pxa910_clkregs[] = {
	INIT_CLKREG(&clk_uart1, "pxa2xx-uart.0", NULL),
	INIT_CLKREG(&clk_uart2, "pxa2xx-uart.1", NULL),
};

static int __init pxa910_init(void)
{
	if (cpu_is_pxa910()) {
		mfp_init_base(MFPR_VIRT_BASE);
		mfp_init_addr(pxa910_mfp_addr_map);
		pxa_init_dma(IRQ_PXA910_DMA_INT0, 32);
		clks_register(ARRAY_AND_SIZE(pxa910_clkregs));
	}

	return 0;
}
postcore_initcall(pxa910_init);

/* system timer - clock enabled, 3.25MHz */
#define TIMER_CLK_RST	(APBC_APBCLK | APBC_FNCLK | APBC_FNCLKSEL(3))

static void __init pxa910_timer_init(void)
{
	/* reset and configure */
	__raw_writel(APBC_APBCLK | APBC_RST, APBC_PXA910_TIMERS);
	__raw_writel(TIMER_CLK_RST, APBC_PXA910_TIMERS);

	timer_init(IRQ_PXA910_AP1_TIMER1);
}

struct sys_timer pxa910_timer = {
	.init	= pxa910_timer_init,
};

/* on-chip devices */

/* NOTE: there are totally 3 UARTs on PXA910:
 *
 *   UART1   - Slow UART (can be used both by AP and CP)
 *   UART2/3 - Fast UART
 *
 * To be backward compatible with the legacy FFUART/BTUART/STUART sequence,
 * they are re-ordered as:
 *
 *   pxa910_device_uart1 - UART2 as FFUART
 *   pxa910_device_uart2 - UART3 as BTUART
 *
 * UART1 is not used by AP for the moment.
 */
PXA910_DEVICE(uart1, "pxa2xx-uart", 0, UART2, 0xd4017000, 0x30, 21, 22);
PXA910_DEVICE(uart2, "pxa2xx-uart", 1, UART3, 0xd4018000, 0x30, 23, 24);
OpenPOWER on IntegriCloud