Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
board-apsh4ad0a.c
Go to the documentation of this file.
1 /*
2  * ALPHAPROJECT AP-SH4AD-0A Support.
3  *
4  * Copyright (C) 2010 ALPHAPROJECT Co.,Ltd.
5  * Copyright (C) 2010 Matt Fleming
6  * Copyright (C) 2010 Paul Mundt
7  *
8  * This file is subject to the terms and conditions of the GNU General Public
9  * License. See the file "COPYING" in the main directory of this archive
10  * for more details.
11  */
12 #include <linux/init.h>
13 #include <linux/platform_device.h>
14 #include <linux/io.h>
15 #include <linux/regulator/fixed.h>
17 #include <linux/smsc911x.h>
18 #include <linux/irq.h>
19 #include <linux/clk.h>
20 #include <asm/machvec.h>
21 #include <asm/sizes.h>
22 
23 /* Dummy supplies, where voltage doesn't matter */
24 static struct regulator_consumer_supply dummy_supplies[] = {
25  REGULATOR_SUPPLY("vddvario", "smsc911x"),
26  REGULATOR_SUPPLY("vdd33a", "smsc911x"),
27 };
28 
29 static struct resource smsc911x_resources[] = {
30  [0] = {
31  .name = "smsc911x-memory",
32  .start = 0xA4000000,
33  .end = 0xA4000000 + SZ_256 - 1,
34  .flags = IORESOURCE_MEM,
35  },
36  [1] = {
37  .name = "smsc911x-irq",
38  .start = evt2irq(0x200),
39  .end = evt2irq(0x200),
40  .flags = IORESOURCE_IRQ,
41  },
42 };
43 
44 static struct smsc911x_platform_config smsc911x_config = {
45  .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
46  .irq_type = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
47  .flags = SMSC911X_USE_16BIT,
48  .phy_interface = PHY_INTERFACE_MODE_MII,
49 };
50 
51 static struct platform_device smsc911x_device = {
52  .name = "smsc911x",
53  .id = -1,
54  .num_resources = ARRAY_SIZE(smsc911x_resources),
55  .resource = smsc911x_resources,
56  .dev = {
57  .platform_data = &smsc911x_config,
58  },
59 };
60 
61 static struct platform_device *apsh4ad0a_devices[] __initdata = {
62  &smsc911x_device,
63 };
64 
65 static int __init apsh4ad0a_devices_setup(void)
66 {
67  regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
68 
69  return platform_add_devices(apsh4ad0a_devices,
70  ARRAY_SIZE(apsh4ad0a_devices));
71 }
72 device_initcall(apsh4ad0a_devices_setup);
73 
74 static int apsh4ad0a_mode_pins(void)
75 {
76  int value = 0;
77 
78  /* These are the factory default settings of SW1 and SW2.
79  * If you change these dip switches then you will need to
80  * adjust the values below as well.
81  */
82  value |= MODE_PIN0; /* Clock Mode 3 */
83  value |= MODE_PIN1;
84  value &= ~MODE_PIN2;
85  value &= ~MODE_PIN3;
86  value &= ~MODE_PIN4; /* 16-bit Area0 bus width */
87  value |= MODE_PIN5;
88  value |= MODE_PIN6;
89  value |= MODE_PIN7; /* Normal mode */
90  value |= MODE_PIN8; /* Little Endian */
91  value |= MODE_PIN9; /* Crystal resonator */
92  value &= ~MODE_PIN10; /* 29-bit address mode */
93  value &= ~MODE_PIN11; /* PCI-E Root port */
94  value &= ~MODE_PIN12; /* 4 lane + 1 lane */
95  value |= MODE_PIN13; /* AUD Enable */
96  value &= ~MODE_PIN14; /* Normal Operation */
97 
98  return value;
99 }
100 
101 static int apsh4ad0a_clk_init(void)
102 {
103  struct clk *clk;
104  int ret;
105 
106  clk = clk_get(NULL, "extal");
107  if (IS_ERR(clk))
108  return PTR_ERR(clk);
109  ret = clk_set_rate(clk, 33333000);
110  clk_put(clk);
111 
112  return ret;
113 }
114 
115 /* Initialize the board */
116 static void __init apsh4ad0a_setup(char **cmdline_p)
117 {
118  pr_info("Alpha Project AP-SH4AD-0A support:\n");
119 }
120 
121 static void __init apsh4ad0a_init_irq(void)
122 {
124 }
125 
126 /*
127  * The Machine Vector
128  */
129 static struct sh_machine_vector mv_apsh4ad0a __initmv = {
130  .mv_name = "AP-SH4AD-0A",
131  .mv_setup = apsh4ad0a_setup,
132  .mv_mode_pins = apsh4ad0a_mode_pins,
133  .mv_clk_init = apsh4ad0a_clk_init,
134  .mv_init_irq = apsh4ad0a_init_irq,
135 };