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 | |
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 | |
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 | |
98 | static int apsh4ad0a_clk_init(void) |
99 | { |
100 | struct clk *clk; |
101 | int ret; |
102 | |
103 | clk = clk_get(NULL, id: "extal" ); |
104 | if (IS_ERR(ptr: clk)) |
105 | return PTR_ERR(ptr: clk); |
106 | ret = clk_set_rate(clk, rate: 33333000); |
107 | clk_put(clk); |
108 | |
109 | return ret; |
110 | } |
111 | |
112 | /* Initialize the board */ |
113 | static void __init apsh4ad0a_setup(char **cmdline_p) |
114 | { |
115 | pr_info("Alpha Project AP-SH4AD-0A support:\n" ); |
116 | } |
117 | |
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 | |