Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
[linux-2.6] / arch / powerpc / platforms / 8xx / mpc86xads_setup.c
1 /*arch/powerpc/platforms/8xx/mpc86xads_setup.c
2  *
3  * Platform setup for the Freescale mpc86xads board
4  *
5  * Vitaly Bordug <vbordug@ru.mvista.com>
6  *
7  * Copyright 2005 MontaVista Software Inc.
8  *
9  * Heavily modified by Scott Wood <scottwood@freescale.com>
10  * Copyright 2007 Freescale Semiconductor, Inc.
11  *
12  * This file is licensed under the terms of the GNU General Public License
13  * version 2. This program is licensed "as is" without any warranty of any
14  * kind, whether express or implied.
15  */
16
17 #include <linux/init.h>
18 #include <linux/of_platform.h>
19
20 #include <asm/io.h>
21 #include <asm/machdep.h>
22 #include <asm/system.h>
23 #include <asm/time.h>
24 #include <asm/8xx_immap.h>
25 #include <asm/cpm1.h>
26 #include <asm/fs_pd.h>
27 #include <asm/udbg.h>
28
29 #include "mpc86xads.h"
30 #include "mpc8xx.h"
31
32 struct cpm_pin {
33         int port, pin, flags;
34 };
35
36 static struct cpm_pin mpc866ads_pins[] = {
37         /* SMC1 */
38         {CPM_PORTB, 24, CPM_PIN_INPUT}, /* RX */
39         {CPM_PORTB, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
40
41         /* SMC2 */
42         {CPM_PORTB, 21, CPM_PIN_INPUT}, /* RX */
43         {CPM_PORTB, 20, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
44
45         /* SCC1 */
46         {CPM_PORTA, 6, CPM_PIN_INPUT}, /* CLK1 */
47         {CPM_PORTA, 7, CPM_PIN_INPUT}, /* CLK2 */
48         {CPM_PORTA, 14, CPM_PIN_INPUT}, /* TX */
49         {CPM_PORTA, 15, CPM_PIN_INPUT}, /* RX */
50         {CPM_PORTB, 19, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TENA */
51         {CPM_PORTC, 10, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* RENA */
52         {CPM_PORTC, 11, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* CLSN */
53
54         /* MII */
55         {CPM_PORTD, 3, CPM_PIN_OUTPUT},
56         {CPM_PORTD, 4, CPM_PIN_OUTPUT},
57         {CPM_PORTD, 5, CPM_PIN_OUTPUT},
58         {CPM_PORTD, 6, CPM_PIN_OUTPUT},
59         {CPM_PORTD, 7, CPM_PIN_OUTPUT},
60         {CPM_PORTD, 8, CPM_PIN_OUTPUT},
61         {CPM_PORTD, 9, CPM_PIN_OUTPUT},
62         {CPM_PORTD, 10, CPM_PIN_OUTPUT},
63         {CPM_PORTD, 11, CPM_PIN_OUTPUT},
64         {CPM_PORTD, 12, CPM_PIN_OUTPUT},
65         {CPM_PORTD, 13, CPM_PIN_OUTPUT},
66         {CPM_PORTD, 14, CPM_PIN_OUTPUT},
67         {CPM_PORTD, 15, CPM_PIN_OUTPUT},
68
69         /* I2C */
70         {CPM_PORTB, 26, CPM_PIN_INPUT | CPM_PIN_OPENDRAIN},
71         {CPM_PORTB, 27, CPM_PIN_INPUT | CPM_PIN_OPENDRAIN},
72 };
73
74 static void __init init_ioports(void)
75 {
76         int i;
77
78         for (i = 0; i < ARRAY_SIZE(mpc866ads_pins); i++) {
79                 struct cpm_pin *pin = &mpc866ads_pins[i];
80                 cpm1_set_pin(pin->port, pin->pin, pin->flags);
81         }
82
83         cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX);
84         cpm1_clk_setup(CPM_CLK_SMC2, CPM_BRG2, CPM_CLK_RTX);
85         cpm1_clk_setup(CPM_CLK_SCC1, CPM_CLK1, CPM_CLK_TX);
86         cpm1_clk_setup(CPM_CLK_SCC1, CPM_CLK2, CPM_CLK_RX);
87
88         /* Set FEC1 and FEC2 to MII mode */
89         clrbits32(&mpc8xx_immr->im_cpm.cp_cptr, 0x00000180);
90 }
91
92 static void __init mpc86xads_setup_arch(void)
93 {
94         struct device_node *np;
95         u32 __iomem *bcsr_io;
96
97         cpm_reset();
98         init_ioports();
99
100         np = of_find_compatible_node(NULL, NULL, "fsl,mpc866ads-bcsr");
101         if (!np) {
102                 printk(KERN_CRIT "Could not find fsl,mpc866ads-bcsr node\n");
103                 return;
104         }
105
106         bcsr_io = of_iomap(np, 0);
107         of_node_put(np);
108
109         if (bcsr_io == NULL) {
110                 printk(KERN_CRIT "Could not remap BCSR\n");
111                 return;
112         }
113
114         clrbits32(bcsr_io, BCSR1_RS232EN_1 | BCSR1_RS232EN_2 | BCSR1_ETHEN);
115         iounmap(bcsr_io);
116 }
117
118 static int __init mpc86xads_probe(void)
119 {
120         unsigned long root = of_get_flat_dt_root();
121         return of_flat_dt_is_compatible(root, "fsl,mpc866ads");
122 }
123
124 static struct of_device_id __initdata of_bus_ids[] = {
125         { .name = "soc", },
126         { .name = "cpm", },
127         { .name = "localbus", },
128         {},
129 };
130
131 static int __init declare_of_platform_devices(void)
132 {
133         of_platform_bus_probe(NULL, of_bus_ids, NULL);
134
135         return 0;
136 }
137 machine_device_initcall(mpc86x_ads, declare_of_platform_devices);
138
139 define_machine(mpc86x_ads) {
140         .name                   = "MPC86x ADS",
141         .probe                  = mpc86xads_probe,
142         .setup_arch             = mpc86xads_setup_arch,
143         .init_IRQ               = mpc8xx_pics_init,
144         .get_irq                = mpc8xx_get_irq,
145         .restart                = mpc8xx_restart,
146         .calibrate_decr         = mpc8xx_calibrate_decr,
147         .set_rtc_time           = mpc8xx_set_rtc_time,
148         .get_rtc_time           = mpc8xx_get_rtc_time,
149         .progress               = udbg_progress,
150 };