Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
[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/cpm1.h>
19
20 #include "mpc8xx.h"
21
22 struct cpm_pin {
23         int port, pin, flags;
24 };
25
26 static struct cpm_pin ep88xc_pins[] = {
27         /* SMC1 */
28         {1, 24, CPM_PIN_INPUT}, /* RX */
29         {1, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
30
31         /* SCC2 */
32         {0, 12, CPM_PIN_INPUT}, /* TX */
33         {0, 13, CPM_PIN_INPUT}, /* RX */
34         {2, 8, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* CD */
35         {2, 9, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* CTS */
36         {2, 14, CPM_PIN_INPUT}, /* RTS */
37
38         /* MII1 */
39         {0, 0, CPM_PIN_INPUT},
40         {0, 1, CPM_PIN_INPUT},
41         {0, 2, CPM_PIN_INPUT},
42         {0, 3, CPM_PIN_INPUT},
43         {0, 4, CPM_PIN_OUTPUT},
44         {0, 10, CPM_PIN_OUTPUT},
45         {0, 11, CPM_PIN_OUTPUT},
46         {1, 19, CPM_PIN_INPUT},
47         {1, 31, CPM_PIN_INPUT},
48         {2, 12, CPM_PIN_INPUT},
49         {2, 13, CPM_PIN_INPUT},
50         {3, 8, CPM_PIN_INPUT},
51         {4, 30, CPM_PIN_OUTPUT},
52         {4, 31, CPM_PIN_OUTPUT},
53
54         /* MII2 */
55         {4, 14, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
56         {4, 15, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
57         {4, 16, CPM_PIN_OUTPUT},
58         {4, 17, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
59         {4, 18, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
60         {4, 19, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
61         {4, 20, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
62         {4, 21, CPM_PIN_OUTPUT},
63         {4, 22, CPM_PIN_OUTPUT},
64         {4, 23, CPM_PIN_OUTPUT},
65         {4, 24, CPM_PIN_OUTPUT},
66         {4, 25, CPM_PIN_OUTPUT},
67         {4, 26, CPM_PIN_OUTPUT},
68         {4, 27, CPM_PIN_OUTPUT},
69         {4, 28, CPM_PIN_OUTPUT},
70         {4, 29, CPM_PIN_OUTPUT},
71
72         /* USB */
73         {0, 6, CPM_PIN_INPUT},  /* CLK2 */
74         {0, 14, CPM_PIN_INPUT}, /* USBOE */
75         {0, 15, CPM_PIN_INPUT}, /* USBRXD */
76         {2, 6, CPM_PIN_OUTPUT}, /* USBTXN */
77         {2, 7, CPM_PIN_OUTPUT}, /* USBTXP */
78         {2, 10, CPM_PIN_INPUT}, /* USBRXN */
79         {2, 11, CPM_PIN_INPUT}, /* USBRXP */
80
81         /* Misc */
82         {1, 26, CPM_PIN_INPUT}, /* BRGO2 */
83         {1, 27, CPM_PIN_INPUT}, /* BRGO1 */
84 };
85
86 static void __init init_ioports(void)
87 {
88         int i;
89
90         for (i = 0; i < ARRAY_SIZE(ep88xc_pins); i++) {
91                 struct cpm_pin *pin = &ep88xc_pins[i];
92                 cpm1_set_pin(pin->port, pin->pin, pin->flags);
93         }
94
95         cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX);
96         cpm1_clk_setup(CPM_CLK_SCC1, CPM_CLK2, CPM_CLK_TX); /* USB */
97         cpm1_clk_setup(CPM_CLK_SCC1, CPM_CLK2, CPM_CLK_RX);
98         cpm1_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_TX);
99         cpm1_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_RX);
100 }
101
102 static u8 __iomem *ep88xc_bcsr;
103
104 #define BCSR7_SCC2_ENABLE 0x10
105
106 #define BCSR8_PHY1_ENABLE 0x80
107 #define BCSR8_PHY1_POWER  0x40
108 #define BCSR8_PHY2_ENABLE 0x20
109 #define BCSR8_PHY2_POWER  0x10
110
111 #define BCSR9_USB_ENABLE  0x80
112 #define BCSR9_USB_POWER   0x40
113 #define BCSR9_USB_HOST    0x20
114 #define BCSR9_USB_FULL_SPEED_TARGET 0x10
115
116 static void __init ep88xc_setup_arch(void)
117 {
118         struct device_node *np;
119
120         cpm_reset();
121         init_ioports();
122
123         np = of_find_compatible_node(NULL, NULL, "fsl,ep88xc-bcsr");
124         if (!np) {
125                 printk(KERN_CRIT "Could not find fsl,ep88xc-bcsr node\n");
126                 return;
127         }
128
129         ep88xc_bcsr = of_iomap(np, 0);
130         of_node_put(np);
131
132         if (!ep88xc_bcsr) {
133                 printk(KERN_CRIT "Could not remap BCSR\n");
134                 return;
135         }
136
137         setbits8(&ep88xc_bcsr[7], BCSR7_SCC2_ENABLE);
138         setbits8(&ep88xc_bcsr[8], BCSR8_PHY1_ENABLE | BCSR8_PHY1_POWER |
139                                   BCSR8_PHY2_ENABLE | BCSR8_PHY2_POWER);
140 }
141
142 static int __init ep88xc_probe(void)
143 {
144         unsigned long root = of_get_flat_dt_root();
145         return of_flat_dt_is_compatible(root, "fsl,ep88xc");
146 }
147
148 static struct of_device_id __initdata of_bus_ids[] = {
149         { .name = "soc", },
150         { .name = "cpm", },
151         { .name = "localbus", },
152         {},
153 };
154
155 static int __init declare_of_platform_devices(void)
156 {
157         /* Publish the QE devices */
158         of_platform_bus_probe(NULL, of_bus_ids, NULL);
159
160         return 0;
161 }
162 machine_device_initcall(ep88xc, declare_of_platform_devices);
163
164 define_machine(ep88xc) {
165         .name = "Embedded Planet EP88xC",
166         .probe = ep88xc_probe,
167         .setup_arch = ep88xc_setup_arch,
168         .init_IRQ = mpc8xx_pics_init,
169         .get_irq        = mpc8xx_get_irq,
170         .restart = mpc8xx_restart,
171         .calibrate_decr = mpc8xx_calibrate_decr,
172         .set_rtc_time = mpc8xx_set_rtc_time,
173         .get_rtc_time = mpc8xx_get_rtc_time,
174         .progress = udbg_progress,
175 };