diff options
Diffstat (limited to 'arch/powerpc/platforms/82xx/mpc8272_ads.c')
-rw-r--r-- | arch/powerpc/platforms/82xx/mpc8272_ads.c | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/82xx/mpc8272_ads.c b/arch/powerpc/platforms/82xx/mpc8272_ads.c new file mode 100644 index 00000000000..fd83440eb28 --- /dev/null +++ b/arch/powerpc/platforms/82xx/mpc8272_ads.c | |||
@@ -0,0 +1,196 @@ | |||
1 | /* | ||
2 | * MPC8272 ADS board support | ||
3 | * | ||
4 | * Copyright 2007 Freescale Semiconductor, Inc. | ||
5 | * Author: Scott Wood <scottwood@freescale.com> | ||
6 | * | ||
7 | * Based on code by Vitaly Bordug <vbordug@ru.mvista.com> | ||
8 | * Copyright (c) 2006 MontaVista Software, Inc. | ||
9 | * | ||
10 | * This program is free software; you can redistribute it and/or modify it | ||
11 | * under the terms of the GNU General Public License as published by the | ||
12 | * Free Software Foundation; either version 2 of the License, or (at your | ||
13 | * option) any later version. | ||
14 | */ | ||
15 | |||
16 | #include <linux/init.h> | ||
17 | #include <linux/interrupt.h> | ||
18 | #include <linux/fsl_devices.h> | ||
19 | #include <linux/of_platform.h> | ||
20 | #include <linux/io.h> | ||
21 | |||
22 | #include <asm/cpm2.h> | ||
23 | #include <asm/udbg.h> | ||
24 | #include <asm/machdep.h> | ||
25 | #include <asm/time.h> | ||
26 | |||
27 | #include <platforms/82xx/pq2.h> | ||
28 | |||
29 | #include <sysdev/fsl_soc.h> | ||
30 | #include <sysdev/cpm2_pic.h> | ||
31 | |||
32 | #include "pq2ads.h" | ||
33 | #include "pq2.h" | ||
34 | |||
35 | static void __init mpc8272_ads_pic_init(void) | ||
36 | { | ||
37 | struct device_node *np = of_find_compatible_node(NULL, NULL, | ||
38 | "fsl,cpm2-pic"); | ||
39 | if (!np) { | ||
40 | printk(KERN_ERR "PIC init: can not find fsl,cpm2-pic node\n"); | ||
41 | return; | ||
42 | } | ||
43 | |||
44 | cpm2_pic_init(np); | ||
45 | of_node_put(np); | ||
46 | |||
47 | /* Initialize stuff for the 82xx CPLD IC and install demux */ | ||
48 | pq2ads_pci_init_irq(); | ||
49 | } | ||
50 | |||
51 | struct cpm_pin { | ||
52 | int port, pin, flags; | ||
53 | }; | ||
54 | |||
55 | static struct cpm_pin mpc8272_ads_pins[] = { | ||
56 | /* SCC1 */ | ||
57 | {3, 30, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, | ||
58 | {3, 31, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | ||
59 | |||
60 | /* SCC4 */ | ||
61 | {3, 21, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, | ||
62 | {3, 22, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | ||
63 | |||
64 | /* FCC1 */ | ||
65 | {0, 14, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | ||
66 | {0, 15, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | ||
67 | {0, 16, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | ||
68 | {0, 17, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | ||
69 | {0, 18, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, | ||
70 | {0, 19, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, | ||
71 | {0, 20, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, | ||
72 | {0, 21, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, | ||
73 | {0, 26, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, | ||
74 | {0, 27, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, | ||
75 | {0, 28, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, | ||
76 | {0, 29, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, | ||
77 | {0, 30, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, | ||
78 | {0, 31, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, | ||
79 | {2, 21, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | ||
80 | {2, 22, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | ||
81 | |||
82 | /* FCC2 */ | ||
83 | {1, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | ||
84 | {1, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | ||
85 | {1, 20, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | ||
86 | {1, 21, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | ||
87 | {1, 22, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, | ||
88 | {1, 23, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, | ||
89 | {1, 24, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, | ||
90 | {1, 25, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, | ||
91 | {1, 26, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | ||
92 | {1, 27, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | ||
93 | {1, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | ||
94 | {1, 29, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, | ||
95 | {1, 30, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | ||
96 | {1, 31, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, | ||
97 | {2, 16, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | ||
98 | {2, 17, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | ||
99 | }; | ||
100 | |||
101 | static void __init init_ioports(void) | ||
102 | { | ||
103 | int i; | ||
104 | |||
105 | for (i = 0; i < ARRAY_SIZE(mpc8272_ads_pins); i++) { | ||
106 | struct cpm_pin *pin = &mpc8272_ads_pins[i]; | ||
107 | cpm2_set_pin(pin->port, pin->pin, pin->flags); | ||
108 | } | ||
109 | |||
110 | cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_RX); | ||
111 | cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_TX); | ||
112 | cpm2_clk_setup(CPM_CLK_SCC4, CPM_BRG4, CPM_CLK_RX); | ||
113 | cpm2_clk_setup(CPM_CLK_SCC4, CPM_BRG4, CPM_CLK_TX); | ||
114 | cpm2_clk_setup(CPM_CLK_FCC1, CPM_CLK11, CPM_CLK_RX); | ||
115 | cpm2_clk_setup(CPM_CLK_FCC1, CPM_CLK10, CPM_CLK_TX); | ||
116 | cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK15, CPM_CLK_RX); | ||
117 | cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK16, CPM_CLK_TX); | ||
118 | } | ||
119 | |||
120 | static void __init mpc8272_ads_setup_arch(void) | ||
121 | { | ||
122 | struct device_node *np; | ||
123 | __be32 __iomem *bcsr; | ||
124 | |||
125 | if (ppc_md.progress) | ||
126 | ppc_md.progress("mpc8272_ads_setup_arch()", 0); | ||
127 | |||
128 | cpm2_reset(); | ||
129 | |||
130 | np = of_find_compatible_node(NULL, NULL, "fsl,mpc8272ads-bcsr"); | ||
131 | if (!np) { | ||
132 | printk(KERN_ERR "No bcsr in device tree\n"); | ||
133 | return; | ||
134 | } | ||
135 | |||
136 | bcsr = of_iomap(np, 0); | ||
137 | if (!bcsr) { | ||
138 | printk(KERN_ERR "Cannot map BCSR registers\n"); | ||
139 | return; | ||
140 | } | ||
141 | |||
142 | of_node_put(np); | ||
143 | |||
144 | clrbits32(&bcsr[1], BCSR1_RS232_EN1 | BCSR1_RS232_EN2 | BCSR1_FETHIEN); | ||
145 | setbits32(&bcsr[1], BCSR1_FETH_RST); | ||
146 | |||
147 | clrbits32(&bcsr[3], BCSR3_FETHIEN2); | ||
148 | setbits32(&bcsr[3], BCSR3_FETH2_RST); | ||
149 | |||
150 | iounmap(bcsr); | ||
151 | |||
152 | init_ioports(); | ||
153 | pq2_init_pci(); | ||
154 | |||
155 | if (ppc_md.progress) | ||
156 | ppc_md.progress("mpc8272_ads_setup_arch(), finish", 0); | ||
157 | } | ||
158 | |||
159 | static struct of_device_id __initdata of_bus_ids[] = { | ||
160 | { .name = "soc", }, | ||
161 | { .name = "cpm", }, | ||
162 | { .name = "localbus", }, | ||
163 | {}, | ||
164 | }; | ||
165 | |||
166 | static int __init declare_of_platform_devices(void) | ||
167 | { | ||
168 | if (!machine_is(mpc8272_ads)) | ||
169 | return 0; | ||
170 | |||
171 | /* Publish the QE devices */ | ||
172 | of_platform_bus_probe(NULL, of_bus_ids, NULL); | ||
173 | return 0; | ||
174 | } | ||
175 | device_initcall(declare_of_platform_devices); | ||
176 | |||
177 | /* | ||
178 | * Called very early, device-tree isn't unflattened | ||
179 | */ | ||
180 | static int __init mpc8272_ads_probe(void) | ||
181 | { | ||
182 | unsigned long root = of_get_flat_dt_root(); | ||
183 | return of_flat_dt_is_compatible(root, "fsl,mpc8272ads"); | ||
184 | } | ||
185 | |||
186 | define_machine(mpc8272_ads) | ||
187 | { | ||
188 | .name = "Freescale MPC8272 ADS", | ||
189 | .probe = mpc8272_ads_probe, | ||
190 | .setup_arch = mpc8272_ads_setup_arch, | ||
191 | .init_IRQ = mpc8272_ads_pic_init, | ||
192 | .get_irq = cpm2_get_irq, | ||
193 | .calibrate_decr = generic_calibrate_decr, | ||
194 | .restart = pq2_restart, | ||
195 | .progress = udbg_progress, | ||
196 | }; | ||