1// SPDX-License-Identifier: GPL-2.0
2/*
3 * June 2006 Steve Glendinning <steve.glendinning@shawell.net>
4 *
5 * Polaris-specific resource declaration
6 *
7 */
8
9#include <linux/init.h>
10#include <linux/interrupt.h>
11#include <linux/irq.h>
12#include <linux/platform_device.h>
13#include <linux/regulator/fixed.h>
14#include <linux/regulator/machine.h>
15#include <linux/smsc911x.h>
16#include <linux/io.h>
17#include <asm/irq.h>
18#include <asm/machvec.h>
19#include <asm/heartbeat.h>
20#include <cpu/gpio.h>
21#include <mach-se/mach/se.h>
22
23#define BCR2		(0xFFFFFF62)
24#define WCR2		(0xFFFFFF66)
25#define AREA5_WAIT_CTRL	(0x1C00)
26#define WAIT_STATES_10	(0x7)
27
28/* Dummy supplies, where voltage doesn't matter */
29static struct regulator_consumer_supply dummy_supplies[] = {
30	REGULATOR_SUPPLY("vddvario", "smsc911x.0"),
31	REGULATOR_SUPPLY("vdd33a", "smsc911x.0"),
32};
33
34static struct resource smsc911x_resources[] = {
35	[0] = {
36		.name		= "smsc911x-memory",
37		.start		= PA_EXT5,
38		.end		= PA_EXT5 + 0x1fff,
39		.flags		= IORESOURCE_MEM,
40	},
41	[1] = {
42		.name		= "smsc911x-irq",
43		.start		= IRQ0_IRQ,
44		.end		= IRQ0_IRQ,
45		.flags		= IORESOURCE_IRQ,
46	},
47};
48
49static struct smsc911x_platform_config smsc911x_config = {
50	.irq_polarity	= SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
51	.irq_type	= SMSC911X_IRQ_TYPE_OPEN_DRAIN,
52	.flags		= SMSC911X_USE_32BIT,
53	.phy_interface	= PHY_INTERFACE_MODE_MII,
54};
55
56static struct platform_device smsc911x_device = {
57	.name		= "smsc911x",
58	.id		= 0,
59	.num_resources	= ARRAY_SIZE(smsc911x_resources),
60	.resource	= smsc911x_resources,
61	.dev = {
62		.platform_data = &smsc911x_config,
63	},
64};
65
66static unsigned char heartbeat_bit_pos[] = { 0, 1, 2, 3 };
67
68static struct heartbeat_data heartbeat_data = {
69	.bit_pos	= heartbeat_bit_pos,
70	.nr_bits	= ARRAY_SIZE(heartbeat_bit_pos),
71};
72
73static struct resource heartbeat_resource = {
74	.start	= PORT_PCDR,
75	.end	= PORT_PCDR,
76	.flags	= IORESOURCE_MEM | IORESOURCE_MEM_8BIT,
77};
78
79static struct platform_device heartbeat_device = {
80	.name		= "heartbeat",
81	.id		= -1,
82	.dev	= {
83		.platform_data	= &heartbeat_data,
84	},
85	.num_resources	= 1,
86	.resource	= &heartbeat_resource,
87};
88
89static struct platform_device *polaris_devices[] __initdata = {
90	&smsc911x_device,
91	&heartbeat_device,
92};
93
94static int __init polaris_initialise(void)
95{
96	u16 wcr, bcr_mask;
97
98	printk(KERN_INFO "Configuring Polaris external bus\n");
99
100	regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
101
102	/* Configure area 5 with 2 wait states */
103	wcr = __raw_readw(WCR2);
104	wcr &= (~AREA5_WAIT_CTRL);
105	wcr |= (WAIT_STATES_10 << 10);
106	__raw_writew(wcr, WCR2);
107
108	/* Configure area 5 for 32-bit access */
109	bcr_mask = __raw_readw(BCR2);
110	bcr_mask |= 1 << 10;
111	__raw_writew(bcr_mask, BCR2);
112
113	return platform_add_devices(polaris_devices,
114				    ARRAY_SIZE(polaris_devices));
115}
116arch_initcall(polaris_initialise);
117
118static struct ipr_data ipr_irq_table[] = {
119	/* External IRQs */
120	{ IRQ0_IRQ, 0,  0,  1, },	/* IRQ0 */
121	{ IRQ1_IRQ, 0,  4,  1, },	/* IRQ1 */
122};
123
124static unsigned long ipr_offsets[] = {
125	INTC_IPRC
126};
127
128static struct ipr_desc ipr_irq_desc = {
129	.ipr_offsets	= ipr_offsets,
130	.nr_offsets	= ARRAY_SIZE(ipr_offsets),
131
132	.ipr_data	= ipr_irq_table,
133	.nr_irqs	= ARRAY_SIZE(ipr_irq_table),
134	.chip = {
135		.name	= "sh7709-ext",
136	},
137};
138
139static void __init init_polaris_irq(void)
140{
141	/* Disable all interrupts */
142	__raw_writew(0, BCR_ILCRA);
143	__raw_writew(0, BCR_ILCRB);
144	__raw_writew(0, BCR_ILCRC);
145	__raw_writew(0, BCR_ILCRD);
146	__raw_writew(0, BCR_ILCRE);
147	__raw_writew(0, BCR_ILCRF);
148	__raw_writew(0, BCR_ILCRG);
149
150	register_ipr_controller(&ipr_irq_desc);
151}
152
153static struct sh_machine_vector mv_polaris __initmv = {
154	.mv_name		= "Polaris",
155	.mv_init_irq		= init_polaris_irq,
156};
157