a62e9030 |
1 | /* |
2 | * linux/arch/arm/mach-nuc93x/cpu.c |
3 | * |
4 | * Copyright (c) 2009 Nuvoton corporation. |
5 | * |
6 | * Wan ZongShun <mcuos.com@gmail.com> |
7 | * |
8 | * NUC93x series cpu common support |
9 | * |
10 | * This program is free software; you can redistribute it and/or modify |
11 | * it under the terms of the GNU General Public License as published by |
12 | * the Free Software Foundation;version 2 of the License. |
13 | * |
14 | */ |
15 | |
16 | #include <linux/kernel.h> |
17 | #include <linux/types.h> |
18 | #include <linux/interrupt.h> |
19 | #include <linux/list.h> |
20 | #include <linux/timer.h> |
21 | #include <linux/init.h> |
22 | #include <linux/platform_device.h> |
23 | #include <linux/io.h> |
24 | #include <linux/serial_8250.h> |
25 | #include <linux/delay.h> |
26 | |
27 | #include <asm/mach/arch.h> |
28 | #include <asm/mach/map.h> |
29 | #include <asm/mach/irq.h> |
30 | #include <asm/irq.h> |
31 | |
32 | #include <mach/hardware.h> |
33 | #include <mach/regs-serial.h> |
34 | #include <mach/regs-clock.h> |
35 | #include <mach/regs-ebi.h> |
36 | |
37 | #include "cpu.h" |
38 | #include "clock.h" |
39 | |
40 | /* Initial IO mappings */ |
41 | |
42 | static struct map_desc nuc93x_iodesc[] __initdata = { |
43 | IODESC_ENT(IRQ), |
44 | IODESC_ENT(GCR), |
45 | IODESC_ENT(UART), |
46 | IODESC_ENT(TIMER), |
47 | IODESC_ENT(EBI), |
48 | }; |
49 | |
50 | /* Initial nuc932 clock declarations. */ |
51 | static DEFINE_CLK(audio, 2); |
52 | static DEFINE_CLK(sd, 3); |
53 | static DEFINE_CLK(jpg, 4); |
54 | static DEFINE_CLK(video, 5); |
55 | static DEFINE_CLK(vpost, 6); |
56 | static DEFINE_CLK(2d, 7); |
57 | static DEFINE_CLK(gpu, 8); |
58 | static DEFINE_CLK(gdma, 9); |
59 | static DEFINE_CLK(adc, 10); |
60 | static DEFINE_CLK(uart, 11); |
61 | static DEFINE_CLK(spi, 12); |
62 | static DEFINE_CLK(pwm, 13); |
63 | static DEFINE_CLK(timer, 14); |
64 | static DEFINE_CLK(wdt, 15); |
65 | static DEFINE_CLK(ac97, 16); |
66 | static DEFINE_CLK(i2s, 16); |
67 | static DEFINE_CLK(usbck, 17); |
68 | static DEFINE_CLK(usb48, 18); |
69 | static DEFINE_CLK(usbh, 19); |
70 | static DEFINE_CLK(i2c, 20); |
71 | static DEFINE_CLK(ext, 0); |
72 | |
73 | static struct clk_lookup nuc932_clkregs[] = { |
74 | DEF_CLKLOOK(&clk_audio, "nuc932-audio", NULL), |
75 | DEF_CLKLOOK(&clk_sd, "nuc932-sd", NULL), |
76 | DEF_CLKLOOK(&clk_jpg, "nuc932-jpg", "NULL"), |
77 | DEF_CLKLOOK(&clk_video, "nuc932-video", "NULL"), |
78 | DEF_CLKLOOK(&clk_vpost, "nuc932-vpost", NULL), |
79 | DEF_CLKLOOK(&clk_2d, "nuc932-2d", NULL), |
80 | DEF_CLKLOOK(&clk_gpu, "nuc932-gpu", NULL), |
81 | DEF_CLKLOOK(&clk_gdma, "nuc932-gdma", "NULL"), |
82 | DEF_CLKLOOK(&clk_adc, "nuc932-adc", NULL), |
83 | DEF_CLKLOOK(&clk_uart, NULL, "uart"), |
84 | DEF_CLKLOOK(&clk_spi, "nuc932-spi", NULL), |
85 | DEF_CLKLOOK(&clk_pwm, "nuc932-pwm", NULL), |
86 | DEF_CLKLOOK(&clk_timer, NULL, "timer"), |
87 | DEF_CLKLOOK(&clk_wdt, "nuc932-wdt", NULL), |
88 | DEF_CLKLOOK(&clk_ac97, "nuc932-ac97", NULL), |
89 | DEF_CLKLOOK(&clk_i2s, "nuc932-i2s", NULL), |
90 | DEF_CLKLOOK(&clk_usbck, "nuc932-usbck", NULL), |
91 | DEF_CLKLOOK(&clk_usb48, "nuc932-usb48", NULL), |
92 | DEF_CLKLOOK(&clk_usbh, "nuc932-usbh", NULL), |
93 | DEF_CLKLOOK(&clk_i2c, "nuc932-i2c", NULL), |
94 | DEF_CLKLOOK(&clk_ext, NULL, "ext"), |
95 | }; |
96 | |
97 | /* Initial serial platform data */ |
98 | |
99 | struct plat_serial8250_port nuc93x_uart_data[] = { |
100 | NUC93X_8250PORT(UART0), |
101 | {}, |
102 | }; |
103 | |
104 | struct platform_device nuc93x_serial_device = { |
105 | .name = "serial8250", |
106 | .id = PLAT8250_DEV_PLATFORM, |
107 | .dev = { |
108 | .platform_data = nuc93x_uart_data, |
109 | }, |
110 | }; |
111 | |
112 | /*Init NUC93x evb io*/ |
113 | |
114 | void __init nuc93x_map_io(struct map_desc *mach_desc, int mach_size) |
115 | { |
116 | unsigned long idcode = 0x0; |
117 | |
118 | iotable_init(mach_desc, mach_size); |
119 | iotable_init(nuc93x_iodesc, ARRAY_SIZE(nuc93x_iodesc)); |
120 | |
121 | idcode = __raw_readl(NUC93XPDID); |
122 | if (idcode == NUC932_CPUID) |
123 | printk(KERN_INFO "CPU type 0x%08lx is NUC910\n", idcode); |
124 | else |
125 | printk(KERN_ERR "CPU type detect error!\n"); |
126 | |
127 | } |
128 | |
129 | /*Init NUC93x clock*/ |
130 | |
131 | void __init nuc93x_init_clocks(void) |
132 | { |
133 | clks_register(nuc932_clkregs, ARRAY_SIZE(nuc932_clkregs)); |
134 | } |
135 | |