Merge master.kernel.org:/home/rmk/linux-2.6-arm
[linux-2.6] / arch / powerpc / platforms / 8xx / mpc885ads_setup.c
1 /*
2  * Platform setup for the Freescale mpc885ads board
3  *
4  * Vitaly Bordug <vbordug@ru.mvista.com>
5  *
6  * Copyright 2005 MontaVista Software Inc.
7  *
8  * Heavily modified by Scott Wood <scottwood@freescale.com>
9  * Copyright 2007 Freescale Semiconductor, Inc.
10  *
11  * This file is licensed under the terms of the GNU General Public License
12  * version 2. This program is licensed "as is" without any warranty of any
13  * kind, whether express or implied.
14  */
15
16 #include <linux/init.h>
17 #include <linux/module.h>
18 #include <linux/param.h>
19 #include <linux/string.h>
20 #include <linux/ioport.h>
21 #include <linux/device.h>
22 #include <linux/delay.h>
23
24 #include <linux/fs_enet_pd.h>
25 #include <linux/fs_uart_pd.h>
26 #include <linux/fsl_devices.h>
27 #include <linux/mii.h>
28 #include <linux/of_platform.h>
29
30 #include <asm/delay.h>
31 #include <asm/io.h>
32 #include <asm/machdep.h>
33 #include <asm/page.h>
34 #include <asm/processor.h>
35 #include <asm/system.h>
36 #include <asm/time.h>
37 #include <asm/mpc8xx.h>
38 #include <asm/8xx_immap.h>
39 #include <asm/cpm1.h>
40 #include <asm/fs_pd.h>
41 #include <asm/udbg.h>
42
43 #include "mpc885ads.h"
44 #include "mpc8xx.h"
45
46 static u32 __iomem *bcsr, *bcsr5;
47
48 #ifdef CONFIG_PCMCIA_M8XX
49 static void pcmcia_hw_setup(int slot, int enable)
50 {
51         if (enable)
52                 clrbits32(&bcsr[1], BCSR1_PCCEN);
53         else
54                 setbits32(&bcsr[1], BCSR1_PCCEN);
55 }
56
57 static int pcmcia_set_voltage(int slot, int vcc, int vpp)
58 {
59         u32 reg = 0;
60
61         switch (vcc) {
62         case 0:
63                 break;
64         case 33:
65                 reg |= BCSR1_PCCVCC0;
66                 break;
67         case 50:
68                 reg |= BCSR1_PCCVCC1;
69                 break;
70         default:
71                 return 1;
72         }
73
74         switch (vpp) {
75         case 0:
76                 break;
77         case 33:
78         case 50:
79                 if (vcc == vpp)
80                         reg |= BCSR1_PCCVPP1;
81                 else
82                         return 1;
83                 break;
84         case 120:
85                 if ((vcc == 33) || (vcc == 50))
86                         reg |= BCSR1_PCCVPP0;
87                 else
88                         return 1;
89         default:
90                 return 1;
91         }
92
93         /* first, turn off all power */
94         clrbits32(&bcsr[1], 0x00610000);
95
96         /* enable new powersettings */
97         setbits32(&bcsr[1], reg);
98
99         return 0;
100 }
101 #endif
102
103 struct cpm_pin {
104         int port, pin, flags;
105 };
106
107 static struct cpm_pin mpc885ads_pins[] = {
108         /* SMC1 */
109         {CPM_PORTB, 24, CPM_PIN_INPUT}, /* RX */
110         {CPM_PORTB, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
111
112         /* SMC2 */
113 #ifndef CONFIG_MPC8xx_SECOND_ETH_FEC2
114         {CPM_PORTE, 21, CPM_PIN_INPUT}, /* RX */
115         {CPM_PORTE, 20, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
116 #endif
117
118         /* SCC3 */
119         {CPM_PORTA, 9, CPM_PIN_INPUT}, /* RX */
120         {CPM_PORTA, 8, CPM_PIN_INPUT}, /* TX */
121         {CPM_PORTC, 4, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* RENA */
122         {CPM_PORTC, 5, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* CLSN */
123         {CPM_PORTE, 27, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TENA */
124         {CPM_PORTE, 17, CPM_PIN_INPUT}, /* CLK5 */
125         {CPM_PORTE, 16, CPM_PIN_INPUT}, /* CLK6 */
126
127         /* MII1 */
128         {CPM_PORTA, 0, CPM_PIN_INPUT},
129         {CPM_PORTA, 1, CPM_PIN_INPUT},
130         {CPM_PORTA, 2, CPM_PIN_INPUT},
131         {CPM_PORTA, 3, CPM_PIN_INPUT},
132         {CPM_PORTA, 4, CPM_PIN_OUTPUT},
133         {CPM_PORTA, 10, CPM_PIN_OUTPUT},
134         {CPM_PORTA, 11, CPM_PIN_OUTPUT},
135         {CPM_PORTB, 19, CPM_PIN_INPUT},
136         {CPM_PORTB, 31, CPM_PIN_INPUT},
137         {CPM_PORTC, 12, CPM_PIN_INPUT},
138         {CPM_PORTC, 13, CPM_PIN_INPUT},
139         {CPM_PORTE, 30, CPM_PIN_OUTPUT},
140         {CPM_PORTE, 31, CPM_PIN_OUTPUT},
141
142         /* MII2 */
143 #ifdef CONFIG_MPC8xx_SECOND_ETH_FEC2
144         {CPM_PORTE, 14, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
145         {CPM_PORTE, 15, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
146         {CPM_PORTE, 16, CPM_PIN_OUTPUT},
147         {CPM_PORTE, 17, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
148         {CPM_PORTE, 18, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
149         {CPM_PORTE, 19, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
150         {CPM_PORTE, 20, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
151         {CPM_PORTE, 21, CPM_PIN_OUTPUT},
152         {CPM_PORTE, 22, CPM_PIN_OUTPUT},
153         {CPM_PORTE, 23, CPM_PIN_OUTPUT},
154         {CPM_PORTE, 24, CPM_PIN_OUTPUT},
155         {CPM_PORTE, 25, CPM_PIN_OUTPUT},
156         {CPM_PORTE, 26, CPM_PIN_OUTPUT},
157         {CPM_PORTE, 27, CPM_PIN_OUTPUT},
158         {CPM_PORTE, 28, CPM_PIN_OUTPUT},
159         {CPM_PORTE, 29, CPM_PIN_OUTPUT},
160 #endif
161         /* I2C */
162         {CPM_PORTB, 26, CPM_PIN_INPUT | CPM_PIN_OPENDRAIN},
163         {CPM_PORTB, 27, CPM_PIN_INPUT | CPM_PIN_OPENDRAIN},
164 };
165
166 static void __init init_ioports(void)
167 {
168         int i;
169
170         for (i = 0; i < ARRAY_SIZE(mpc885ads_pins); i++) {
171                 struct cpm_pin *pin = &mpc885ads_pins[i];
172                 cpm1_set_pin(pin->port, pin->pin, pin->flags);
173         }
174
175         cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX);
176         cpm1_clk_setup(CPM_CLK_SMC2, CPM_BRG2, CPM_CLK_RTX);
177         cpm1_clk_setup(CPM_CLK_SCC3, CPM_CLK5, CPM_CLK_TX);
178         cpm1_clk_setup(CPM_CLK_SCC3, CPM_CLK6, CPM_CLK_RX);
179
180         /* Set FEC1 and FEC2 to MII mode */
181         clrbits32(&mpc8xx_immr->im_cpm.cp_cptr, 0x00000180);
182 }
183
184 static void __init mpc885ads_setup_arch(void)
185 {
186         struct device_node *np;
187
188         cpm_reset();
189         init_ioports();
190
191         np = of_find_compatible_node(NULL, NULL, "fsl,mpc885ads-bcsr");
192         if (!np) {
193                 printk(KERN_CRIT "Could not find fsl,mpc885ads-bcsr node\n");
194                 return;
195         }
196
197         bcsr = of_iomap(np, 0);
198         bcsr5 = of_iomap(np, 1);
199         of_node_put(np);
200
201         if (!bcsr || !bcsr5) {
202                 printk(KERN_CRIT "Could not remap BCSR\n");
203                 return;
204         }
205
206         clrbits32(&bcsr[1], BCSR1_RS232EN_1);
207 #ifdef CONFIG_MPC8xx_SECOND_ETH_FEC2
208         setbits32(&bcsr[1], BCSR1_RS232EN_2);
209 #else
210         clrbits32(&bcsr[1], BCSR1_RS232EN_2);
211 #endif
212
213         clrbits32(bcsr5, BCSR5_MII1_EN);
214         setbits32(bcsr5, BCSR5_MII1_RST);
215         udelay(1000);
216         clrbits32(bcsr5, BCSR5_MII1_RST);
217
218 #ifdef CONFIG_MPC8xx_SECOND_ETH_FEC2
219         clrbits32(bcsr5, BCSR5_MII2_EN);
220         setbits32(bcsr5, BCSR5_MII2_RST);
221         udelay(1000);
222         clrbits32(bcsr5, BCSR5_MII2_RST);
223 #else
224         setbits32(bcsr5, BCSR5_MII2_EN);
225 #endif
226
227 #ifdef CONFIG_MPC8xx_SECOND_ETH_SCC3
228         clrbits32(&bcsr[4], BCSR4_ETH10_RST);
229         udelay(1000);
230         setbits32(&bcsr[4], BCSR4_ETH10_RST);
231
232         setbits32(&bcsr[1], BCSR1_ETHEN);
233
234         np = of_find_node_by_path("/soc@ff000000/cpm@9c0/serial@a80");
235 #else
236         np = of_find_node_by_path("/soc@ff000000/cpm@9c0/ethernet@a40");
237 #endif
238
239         /* The SCC3 enet registers overlap the SMC1 registers, so
240          * one of the two must be removed from the device tree.
241          */
242
243         if (np) {
244                 of_detach_node(np);
245                 of_node_put(np);
246         }
247
248 #ifdef CONFIG_PCMCIA_M8XX
249         /* Set up board specific hook-ups.*/
250         m8xx_pcmcia_ops.hw_ctrl = pcmcia_hw_setup;
251         m8xx_pcmcia_ops.voltage_set = pcmcia_set_voltage;
252 #endif
253 }
254
255 static int __init mpc885ads_probe(void)
256 {
257         unsigned long root = of_get_flat_dt_root();
258         return of_flat_dt_is_compatible(root, "fsl,mpc885ads");
259 }
260
261 static struct of_device_id __initdata of_bus_ids[] = {
262         { .name = "soc", },
263         { .name = "cpm", },
264         { .name = "localbus", },
265         {},
266 };
267
268 static int __init declare_of_platform_devices(void)
269 {
270         /* Publish the QE devices */
271         of_platform_bus_probe(NULL, of_bus_ids, NULL);
272
273         return 0;
274 }
275 machine_device_initcall(mpc885_ads, declare_of_platform_devices);
276
277 define_machine(mpc885_ads) {
278         .name                   = "Freescale MPC885 ADS",
279         .probe                  = mpc885ads_probe,
280         .setup_arch             = mpc885ads_setup_arch,
281         .init_IRQ               = mpc8xx_pics_init,
282         .get_irq                = mpc8xx_get_irq,
283         .restart                = mpc8xx_restart,
284         .calibrate_decr         = mpc8xx_calibrate_decr,
285         .set_rtc_time           = mpc8xx_set_rtc_time,
286         .get_rtc_time           = mpc8xx_get_rtc_time,
287         .progress               = udbg_progress,
288 };