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577145f4 VP |
1 | /* |
2 | * Copyright (C) 2009 Texas Instruments Inc. | |
3 | * Mikkel Christensen <mlc@ti.com> | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License version 2 as | |
7 | * published by the Free Software Foundation. | |
8 | */ | |
9 | ||
10 | #include <linux/kernel.h> | |
11 | #include <linux/init.h> | |
12 | #include <linux/gpio.h> | |
13 | #include <linux/serial_8250.h> | |
14 | #include <linux/smsc911x.h> | |
c426df87 | 15 | #include <linux/interrupt.h> |
577145f4 | 16 | |
ce491cf8 | 17 | #include <plat/gpmc.h> |
577145f4 VP |
18 | |
19 | #define ZOOM2_SMSC911X_CS 7 | |
20 | #define ZOOM2_SMSC911X_GPIO 158 | |
21 | #define ZOOM2_QUADUART_CS 3 | |
22 | #define ZOOM2_QUADUART_GPIO 102 | |
23 | #define QUART_CLK 1843200 | |
24 | #define DEBUG_BASE 0x08000000 | |
25 | #define ZOOM2_ETHR_START DEBUG_BASE | |
26 | ||
27 | static struct resource zoom2_smsc911x_resources[] = { | |
28 | [0] = { | |
29 | .start = ZOOM2_ETHR_START, | |
30 | .end = ZOOM2_ETHR_START + SZ_4K, | |
31 | .flags = IORESOURCE_MEM, | |
32 | }, | |
33 | [1] = { | |
34 | .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL, | |
35 | }, | |
36 | }; | |
37 | ||
38 | static struct smsc911x_platform_config zoom2_smsc911x_config = { | |
39 | .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW, | |
40 | .irq_type = SMSC911X_IRQ_TYPE_OPEN_DRAIN, | |
41 | .flags = SMSC911X_USE_32BIT, | |
42 | .phy_interface = PHY_INTERFACE_MODE_MII, | |
43 | }; | |
44 | ||
45 | static struct platform_device zoom2_smsc911x_device = { | |
46 | .name = "smsc911x", | |
47 | .id = -1, | |
48 | .num_resources = ARRAY_SIZE(zoom2_smsc911x_resources), | |
49 | .resource = zoom2_smsc911x_resources, | |
50 | .dev = { | |
51 | .platform_data = &zoom2_smsc911x_config, | |
52 | }, | |
53 | }; | |
54 | ||
55 | static inline void __init zoom2_init_smsc911x(void) | |
56 | { | |
57 | int eth_cs; | |
58 | unsigned long cs_mem_base; | |
59 | int eth_gpio = 0; | |
60 | ||
61 | eth_cs = ZOOM2_SMSC911X_CS; | |
62 | ||
63 | if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) { | |
64 | printk(KERN_ERR "Failed to request GPMC mem for smsc911x\n"); | |
65 | return; | |
66 | } | |
67 | ||
68 | zoom2_smsc911x_resources[0].start = cs_mem_base + 0x0; | |
69 | zoom2_smsc911x_resources[0].end = cs_mem_base + 0xff; | |
70 | ||
71 | eth_gpio = ZOOM2_SMSC911X_GPIO; | |
72 | ||
73 | zoom2_smsc911x_resources[1].start = OMAP_GPIO_IRQ(eth_gpio); | |
74 | ||
75 | if (gpio_request(eth_gpio, "smsc911x irq") < 0) { | |
76 | printk(KERN_ERR "Failed to request GPIO%d for smsc911x IRQ\n", | |
77 | eth_gpio); | |
78 | return; | |
79 | } | |
80 | gpio_direction_input(eth_gpio); | |
81 | } | |
82 | ||
83 | static struct plat_serial8250_port serial_platform_data[] = { | |
84 | { | |
85 | .mapbase = 0x10000000, | |
86 | .irq = OMAP_GPIO_IRQ(102), | |
87 | .flags = UPF_BOOT_AUTOCONF|UPF_IOREMAP|UPF_SHARE_IRQ, | |
c426df87 | 88 | .irqflags = IRQF_SHARED | IRQF_TRIGGER_RISING, |
577145f4 VP |
89 | .iotype = UPIO_MEM, |
90 | .regshift = 1, | |
91 | .uartclk = QUART_CLK, | |
92 | }, { | |
93 | .flags = 0 | |
94 | } | |
95 | }; | |
96 | ||
97 | static struct platform_device zoom2_debugboard_serial_device = { | |
98 | .name = "serial8250", | |
24bcadb6 | 99 | .id = 3, |
577145f4 VP |
100 | .dev = { |
101 | .platform_data = serial_platform_data, | |
102 | }, | |
103 | }; | |
104 | ||
105 | static inline void __init zoom2_init_quaduart(void) | |
106 | { | |
107 | int quart_cs; | |
108 | unsigned long cs_mem_base; | |
109 | int quart_gpio = 0; | |
110 | ||
111 | quart_cs = ZOOM2_QUADUART_CS; | |
112 | ||
113 | if (gpmc_cs_request(quart_cs, SZ_1M, &cs_mem_base) < 0) { | |
114 | printk(KERN_ERR "Failed to request GPMC mem" | |
115 | "for Quad UART(TL16CP754C)\n"); | |
116 | return; | |
117 | } | |
118 | ||
119 | quart_gpio = ZOOM2_QUADUART_GPIO; | |
120 | ||
121 | if (gpio_request(quart_gpio, "TL16CP754C GPIO") < 0) { | |
122 | printk(KERN_ERR "Failed to request GPIO%d for TL16CP754C\n", | |
123 | quart_gpio); | |
124 | return; | |
125 | } | |
126 | gpio_direction_input(quart_gpio); | |
127 | } | |
128 | ||
129 | static inline int omap_zoom2_debugboard_detect(void) | |
130 | { | |
131 | int debug_board_detect = 0; | |
2fcc81a3 | 132 | int ret = 1; |
577145f4 VP |
133 | |
134 | debug_board_detect = ZOOM2_SMSC911X_GPIO; | |
135 | ||
136 | if (gpio_request(debug_board_detect, "Zoom2 debug board detect") < 0) { | |
137 | printk(KERN_ERR "Failed to request GPIO%d for Zoom2 debug" | |
138 | "board detect\n", debug_board_detect); | |
139 | return 0; | |
140 | } | |
141 | gpio_direction_input(debug_board_detect); | |
142 | ||
143 | if (!gpio_get_value(debug_board_detect)) { | |
2fcc81a3 | 144 | ret = 0; |
577145f4 | 145 | } |
2fcc81a3 VP |
146 | gpio_free(debug_board_detect); |
147 | return ret; | |
577145f4 VP |
148 | } |
149 | ||
150 | static struct platform_device *zoom2_devices[] __initdata = { | |
151 | &zoom2_smsc911x_device, | |
152 | &zoom2_debugboard_serial_device, | |
153 | }; | |
154 | ||
155 | int __init omap_zoom2_debugboard_init(void) | |
156 | { | |
157 | if (!omap_zoom2_debugboard_detect()) | |
158 | return 0; | |
159 | ||
160 | zoom2_init_smsc911x(); | |
161 | zoom2_init_quaduart(); | |
162 | return platform_add_devices(zoom2_devices, ARRAY_SIZE(zoom2_devices)); | |
163 | } |