1// SPDX-License-Identifier: GPL-2.0
2/*
3 * ALPHAPROJECT AP-SH4AD-0A Support.
4 *
5 * Copyright (C) 2010 ALPHAPROJECT Co.,Ltd.
6 * Copyright (C) 2010  Matt Fleming
7 * Copyright (C) 2010  Paul Mundt
8 */
9#include <linux/init.h>
10#include <linux/platform_device.h>
11#include <linux/io.h>
12#include <linux/regulator/fixed.h>
13#include <linux/regulator/machine.h>
14#include <linux/smsc911x.h>
15#include <linux/irq.h>
16#include <linux/clk.h>
17#include <asm/machvec.h>
18#include <linux/sizes.h>
19
20/* Dummy supplies, where voltage doesn't matter */
21static struct regulator_consumer_supply dummy_supplies[] = {
22	REGULATOR_SUPPLY("vddvario", "smsc911x"),
23	REGULATOR_SUPPLY("vdd33a", "smsc911x"),
24};
25
26static struct resource smsc911x_resources[] = {
27	[0] = {
28		.name		= "smsc911x-memory",
29		.start		= 0xA4000000,
30		.end		= 0xA4000000 + SZ_256 - 1,
31		.flags		= IORESOURCE_MEM,
32	},
33	[1] = {
34		.name		= "smsc911x-irq",
35		.start		= evt2irq(0x200),
36		.end		= evt2irq(0x200),
37		.flags		= IORESOURCE_IRQ,
38	},
39};
40
41static struct smsc911x_platform_config smsc911x_config = {
42	.irq_polarity	= SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
43	.irq_type	= SMSC911X_IRQ_TYPE_OPEN_DRAIN,
44	.flags		= SMSC911X_USE_16BIT,
45	.phy_interface	= PHY_INTERFACE_MODE_MII,
46};
47
48static struct platform_device smsc911x_device = {
49	.name		= "smsc911x",
50	.id		= -1,
51	.num_resources	= ARRAY_SIZE(smsc911x_resources),
52	.resource	= smsc911x_resources,
53	.dev = {
54		.platform_data = &smsc911x_config,
55	},
56};
57
58static struct platform_device *apsh4ad0a_devices[] __initdata = {
59	&smsc911x_device,
60};
61
62static int __init apsh4ad0a_devices_setup(void)
63{
64	regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
65
66	return platform_add_devices(apsh4ad0a_devices,
67				    ARRAY_SIZE(apsh4ad0a_devices));
68}
69device_initcall(apsh4ad0a_devices_setup);
70
71static int apsh4ad0a_mode_pins(void)
72{
73	int value = 0;
74
75	/* These are the factory default settings of SW1 and SW2.
76	 * If you change these dip switches then you will need to
77	 * adjust the values below as well.
78	 */
79	value |=  MODE_PIN0;  /* Clock Mode 3 */
80	value |=  MODE_PIN1;
81	value &= ~MODE_PIN2;
82	value &= ~MODE_PIN3;
83	value &= ~MODE_PIN4;  /* 16-bit Area0 bus width  */
84	value |=  MODE_PIN5;
85	value |=  MODE_PIN6;
86	value |=  MODE_PIN7;  /* Normal mode */
87	value |=  MODE_PIN8;  /* Little Endian */
88	value |=  MODE_PIN9;  /* Crystal resonator */
89	value &= ~MODE_PIN10; /* 29-bit address mode */
90	value &= ~MODE_PIN11; /* PCI-E Root port */
91	value &= ~MODE_PIN12; /* 4 lane + 1 lane */
92	value |=  MODE_PIN13; /* AUD Enable */
93	value &= ~MODE_PIN14; /* Normal Operation */
94
95	return value;
96}
97
98static int apsh4ad0a_clk_init(void)
99{
100	struct clk *clk;
101	int ret;
102
103	clk = clk_get(NULL, "extal");
104	if (IS_ERR(clk))
105		return PTR_ERR(clk);
106	ret = clk_set_rate(clk, 33333000);
107	clk_put(clk);
108
109	return ret;
110}
111
112/* Initialize the board */
113static void __init apsh4ad0a_setup(char **cmdline_p)
114{
115	pr_info("Alpha Project AP-SH4AD-0A support:\n");
116}
117
118static void __init apsh4ad0a_init_irq(void)
119{
120	plat_irq_setup_pins(IRQ_MODE_IRQ3210);
121}
122
123/*
124 * The Machine Vector
125 */
126static struct sh_machine_vector mv_apsh4ad0a __initmv = {
127	.mv_name		= "AP-SH4AD-0A",
128	.mv_setup		= apsh4ad0a_setup,
129	.mv_mode_pins		= apsh4ad0a_mode_pins,
130	.mv_clk_init		= apsh4ad0a_clk_init,
131	.mv_init_irq		= apsh4ad0a_init_irq,
132};
133