summaryrefslogtreecommitdiff
path: root/arch/mips/alchemy/devboards/pb1100/board_setup.c
blob: 61263081ef58c1100ab5fa67821a29127225d130 (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
/*
 * Copyright 2002, 2008 MontaVista Software Inc.
 * Author: MontaVista Software, Inc. <source@mvista.com>
 *
 *  This program is free software; you can redistribute  it and/or modify it
 *  under  the terms of  the GNU General  Public License as published by the
 *  Free Software Foundation;  either version 2 of the  License, or (at your
 *  option) any later version.
 *
 *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
 *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
 *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
 *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
 *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *  You should have received a copy of the  GNU General Public License along
 *  with this program; if not, write  to the Free Software Foundation, Inc.,
 *  675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <linux/gpio.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/interrupt.h>

#include <asm/mach-au1x00/au1000.h>
#include <asm/mach-pb1x00/pb1100.h>

#include <prom.h>


struct au1xxx_irqmap __initdata au1xxx_irq_map[] = {
	{ AU1000_GPIO_9,  IRQF_TRIGGER_LOW, 0 }, /* PCMCIA Card Fully_Inserted# */
	{ AU1000_GPIO_10, IRQF_TRIGGER_LOW, 0 }, /* PCMCIA Card STSCHG# */
	{ AU1000_GPIO_11, IRQF_TRIGGER_LOW, 0 }, /* PCMCIA Card IRQ# */
	{ AU1000_GPIO_13, IRQF_TRIGGER_LOW, 0 }, /* DC_IRQ# */
};


const char *get_system_type(void)
{
	return "Alchemy Pb1100";
}

void board_reset(void)
{
	/* Hit BCSR.RST_VDDI[SOFT_RESET] */
	au_writel(0x00000000, PB1100_RST_VDDI);
}

void __init board_init_irq(void)
{
	au1xxx_setup_irqmap(au1xxx_irq_map, ARRAY_SIZE(au1xxx_irq_map));
}

void __init board_setup(void)
{
	volatile void __iomem *base = (volatile void __iomem *)0xac000000UL;
	char *argptr;

	argptr = prom_getcmdline();
#ifdef CONFIG_SERIAL_8250_CONSOLE
	argptr = strstr(argptr, "console=");
	if (argptr == NULL) {
		argptr = prom_getcmdline();
		strcat(argptr, " console=ttyS0,115200");
	}
#endif

#ifdef CONFIG_FB_AU1100
	argptr = strstr(argptr, "video=");
	if (argptr == NULL) {
		argptr = prom_getcmdline();
		/* default panel */
		/*strcat(argptr, " video=au1100fb:panel:Sharp_320x240_16");*/
	}
#endif

#if defined(CONFIG_SOUND_AU1X00) && !defined(CONFIG_SOC_AU1000)
	/* au1000 does not support vra, au1500 and au1100 do */
	strcat(argptr, " au1000_audio=vra");
	argptr = prom_getcmdline();
#endif

	/* Set AUX clock to 12 MHz * 8 = 96 MHz */
	au_writel(8, SYS_AUXPLL);
	alchemy_gpio1_input_enable();
	udelay(100);

#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
	{
		u32 pin_func, sys_freqctrl, sys_clksrc;

		/* Configure pins GPIO[14:9] as GPIO */
		pin_func = au_readl(SYS_PINFUNC) & ~SYS_PF_UR3;

		/* Zero and disable FREQ2 */
		sys_freqctrl = au_readl(SYS_FREQCTRL0);
		sys_freqctrl &= ~0xFFF00000;
		au_writel(sys_freqctrl, SYS_FREQCTRL0);

		/* Zero and disable USBH/USBD/IrDA clock */
		sys_clksrc = au_readl(SYS_CLKSRC);
		sys_clksrc &= ~(SYS_CS_CIR | SYS_CS_DIR | SYS_CS_MIR_MASK);
		au_writel(sys_clksrc, SYS_CLKSRC);

		sys_freqctrl = au_readl(SYS_FREQCTRL0);
		sys_freqctrl &= ~0xFFF00000;

		sys_clksrc = au_readl(SYS_CLKSRC);
		sys_clksrc &= ~(SYS_CS_CIR | SYS_CS_DIR | SYS_CS_MIR_MASK);

		/* FREQ2 = aux / 2 = 48 MHz */
		sys_freqctrl |= (0 << SYS_FC_FRDIV2_BIT) |
				SYS_FC_FE2 | SYS_FC_FS2;
		au_writel(sys_freqctrl, SYS_FREQCTRL0);

		/*
		 * Route 48 MHz FREQ2 into USBH/USBD/IrDA
		 */
		sys_clksrc |= SYS_CS_MUX_FQ2 << SYS_CS_MIR_BIT;
		au_writel(sys_clksrc, SYS_CLKSRC);

		/* Setup the static bus controller */
		au_writel(0x00000002, MEM_STCFG3);  /* type = PCMCIA */
		au_writel(0x280E3D07, MEM_STTIME3); /* 250ns cycle time */
		au_writel(0x10000000, MEM_STADDR3); /* any PCMCIA select */

		/*
		 * Get USB Functionality pin state (device vs host drive pins).
		 */
		pin_func = au_readl(SYS_PINFUNC) & ~SYS_PF_USB;
		/* 2nd USB port is USB host. */
		pin_func |= SYS_PF_USB;
		au_writel(pin_func, SYS_PINFUNC);
	}
#endif /* defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) */

	/* Enable sys bus clock divider when IDLE state or no bus activity. */
	au_writel(au_readl(SYS_POWERCTRL) | (0x3 << 5), SYS_POWERCTRL);

	/* Enable the RTC if not already enabled. */
	if (!(readb(base + 0x28) & 0x20)) {
		writeb(readb(base + 0x28) | 0x20, base + 0x28);
		au_sync();
	}
	/* Put the clock in BCD mode. */
	if (readb(base + 0x2C) & 0x4) { /* reg B */
		writeb(readb(base + 0x2c) & ~0x4, base + 0x2c);
		au_sync();
	}
}