Merge branches 'release', 'misc' and 'misc-2.6.25' into release
[linux-2.6] / arch / powerpc / platforms / 8xx / ep88xc.c
1 /*
2  * Platform setup for the Embedded Planet EP88xC board
3  *
4  * Author: Scott Wood <scottwood@freescale.com>
5  * Copyright 2007 Freescale Semiconductor, Inc.
6  *
7  * This file is licensed under the terms of the GNU General Public License
8  * version 2. This program is licensed "as is" without any warranty of any
9  * kind, whether express or implied.
10  */
11
12 #include <linux/init.h>
13 #include <linux/of_platform.h>
14
15 #include <asm/machdep.h>
16 #include <asm/io.h>
17 #include <asm/udbg.h>
18 #include <asm/commproc.h>
19 #include <asm/cpm1.h>
20
21 #include "mpc8xx.h"
22
23 struct cpm_pin {
24         int port, pin, flags;
25 };
26
27 static struct cpm_pin ep88xc_pins[] = {
28         /* SMC1 */
29         {1, 24, CPM_PIN_INPUT}, /* RX */
30         {1, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
31
32         /* SCC2 */
33         {0, 12, CPM_PIN_INPUT}, /* TX */
34         {0, 13, CPM_PIN_INPUT}, /* RX */
35         {2, 8, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* CD */
36         {2, 9, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* CTS */
37         {2, 14, CPM_PIN_INPUT}, /* RTS */
38
39         /* MII1 */
40         {0, 0, CPM_PIN_INPUT},
41         {0, 1, CPM_PIN_INPUT},
42         {0, 2, CPM_PIN_INPUT},
43         {0, 3, CPM_PIN_INPUT},
44         {0, 4, CPM_PIN_OUTPUT},
45         {0, 10, CPM_PIN_OUTPUT},
46         {0, 11, CPM_PIN_OUTPUT},
47         {1, 19, CPM_PIN_INPUT},
48         {1, 31, CPM_PIN_INPUT},
49         {2, 12, CPM_PIN_INPUT},
50         {2, 13, CPM_PIN_INPUT},
51         {3, 8, CPM_PIN_INPUT},
52         {4, 30, CPM_PIN_OUTPUT},
53         {4, 31, CPM_PIN_OUTPUT},
54
55         /* MII2 */
56         {4, 14, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
57         {4, 15, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
58         {4, 16, CPM_PIN_OUTPUT},
59         {4, 17, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
60         {4, 18, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
61         {4, 19, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
62         {4, 20, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
63         {4, 21, CPM_PIN_OUTPUT},
64         {4, 22, CPM_PIN_OUTPUT},
65         {4, 23, CPM_PIN_OUTPUT},
66         {4, 24, CPM_PIN_OUTPUT},
67         {4, 25, CPM_PIN_OUTPUT},
68         {4, 26, CPM_PIN_OUTPUT},
69         {4, 27, CPM_PIN_OUTPUT},
70         {4, 28, CPM_PIN_OUTPUT},
71         {4, 29, CPM_PIN_OUTPUT},
72
73         /* USB */
74         {0, 6, CPM_PIN_INPUT},  /* CLK2 */
75         {0, 14, CPM_PIN_INPUT}, /* USBOE */
76         {0, 15, CPM_PIN_INPUT}, /* USBRXD */
77         {2, 6, CPM_PIN_OUTPUT}, /* USBTXN */
78         {2, 7, CPM_PIN_OUTPUT}, /* USBTXP */
79         {2, 10, CPM_PIN_INPUT}, /* USBRXN */
80         {2, 11, CPM_PIN_INPUT}, /* USBRXP */
81
82         /* Misc */
83         {1, 26, CPM_PIN_INPUT}, /* BRGO2 */
84         {1, 27, CPM_PIN_INPUT}, /* BRGO1 */
85 };
86
87 static void __init init_ioports(void)
88 {
89         int i;
90
91         for (i = 0; i < ARRAY_SIZE(ep88xc_pins); i++) {
92                 struct cpm_pin *pin = &ep88xc_pins[i];
93                 cpm1_set_pin(pin->port, pin->pin, pin->flags);
94         }
95
96         cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX);
97         cpm1_clk_setup(CPM_CLK_SCC1, CPM_CLK2, CPM_CLK_TX); /* USB */
98         cpm1_clk_setup(CPM_CLK_SCC1, CPM_CLK2, CPM_CLK_RX);
99         cpm1_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_TX);
100         cpm1_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_RX);
101 }
102
103 static u8 __iomem *ep88xc_bcsr;
104
105 #define BCSR7_SCC2_ENABLE 0x10
106
107 #define BCSR8_PHY1_ENABLE 0x80
108 #define BCSR8_PHY1_POWER  0x40
109 #define BCSR8_PHY2_ENABLE 0x20
110 #define BCSR8_PHY2_POWER  0x10
111
112 #define BCSR9_USB_ENABLE  0x80
113 #define BCSR9_USB_POWER   0x40
114 #define BCSR9_USB_HOST    0x20
115 #define BCSR9_USB_FULL_SPEED_TARGET 0x10
116
117 static void __init ep88xc_setup_arch(void)
118 {
119         struct device_node *np;
120
121         cpm_reset();
122         init_ioports();
123
124         np = of_find_compatible_node(NULL, NULL, "fsl,ep88xc-bcsr");
125         if (!np) {
126                 printk(KERN_CRIT "Could not find fsl,ep88xc-bcsr node\n");
127                 return;
128         }
129
130         ep88xc_bcsr = of_iomap(np, 0);
131         of_node_put(np);
132
133         if (!ep88xc_bcsr) {
134                 printk(KERN_CRIT "Could not remap BCSR\n");
135                 return;
136         }
137
138         setbits8(&ep88xc_bcsr[7], BCSR7_SCC2_ENABLE);
139         setbits8(&ep88xc_bcsr[8], BCSR8_PHY1_ENABLE | BCSR8_PHY1_POWER |
140                                   BCSR8_PHY2_ENABLE | BCSR8_PHY2_POWER);
141 }
142
143 static int __init ep88xc_probe(void)
144 {
145         unsigned long root = of_get_flat_dt_root();
146         return of_flat_dt_is_compatible(root, "fsl,ep88xc");
147 }
148
149 static struct of_device_id __initdata of_bus_ids[] = {
150         { .name = "soc", },
151         { .name = "cpm", },
152         { .name = "localbus", },
153         {},
154 };
155
156 static int __init declare_of_platform_devices(void)
157 {
158         /* Publish the QE devices */
159         of_platform_bus_probe(NULL, of_bus_ids, NULL);
160
161         return 0;
162 }
163 machine_device_initcall(ep88xc, declare_of_platform_devices);
164
165 define_machine(ep88xc) {
166         .name = "Embedded Planet EP88xC",
167         .probe = ep88xc_probe,
168         .setup_arch = ep88xc_setup_arch,
169         .init_IRQ = mpc8xx_pics_init,
170         .get_irq        = mpc8xx_get_irq,
171         .restart = mpc8xx_restart,
172         .calibrate_decr = mpc8xx_calibrate_decr,
173         .set_rtc_time = mpc8xx_set_rtc_time,
174         .get_rtc_time = mpc8xx_get_rtc_time,
175         .progress = udbg_progress,
176 };