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 */
21 static struct regulator_consumer_supply dummy_supplies[] = {
22 REGULATOR_SUPPLY("vddvario", "smsc911x"),
23 REGULATOR_SUPPLY("vdd33a", "smsc911x"),
24 };
25
26 static 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
41 static 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
48 static 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
58 static struct platform_device *apsh4ad0a_devices[] __initdata = {
59 &smsc911x_device,
60 };
61
apsh4ad0a_devices_setup(void)62 static 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 }
69 device_initcall(apsh4ad0a_devices_setup);
70
apsh4ad0a_mode_pins(void)71 static 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
apsh4ad0a_clk_init(void)98 static 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 */
apsh4ad0a_setup(char ** cmdline_p)113 static void __init apsh4ad0a_setup(char **cmdline_p)
114 {
115 pr_info("Alpha Project AP-SH4AD-0A support:\n");
116 }
117
apsh4ad0a_init_irq(void)118 static void __init apsh4ad0a_init_irq(void)
119 {
120 plat_irq_setup_pins(IRQ_MODE_IRQ3210);
121 }
122
123 /*
124 * The Machine Vector
125 */
126 static 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