powerpc: Convert to new irq_* function names
[linux-2.6.git] / arch / powerpc / platforms / 85xx / sbc8560.c
1 /*
2  * Wind River SBC8560 setup and early boot code.
3  *
4  * Copyright 2007 Wind River Systems Inc.
5  *
6  * By Paul Gortmaker (see MAINTAINERS for contact information)
7  *
8  * Based largely on the MPC8560ADS support - Copyright 2005 Freescale 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/stddef.h>
17 #include <linux/kernel.h>
18 #include <linux/pci.h>
19 #include <linux/kdev_t.h>
20 #include <linux/delay.h>
21 #include <linux/seq_file.h>
22 #include <linux/of_platform.h>
23
24 #include <asm/system.h>
25 #include <asm/time.h>
26 #include <asm/machdep.h>
27 #include <asm/pci-bridge.h>
28 #include <asm/mpic.h>
29 #include <mm/mmu_decl.h>
30 #include <asm/udbg.h>
31
32 #include <sysdev/fsl_soc.h>
33 #include <sysdev/fsl_pci.h>
34
35 #ifdef CONFIG_CPM2
36 #include <asm/cpm2.h>
37 #include <sysdev/cpm2_pic.h>
38 #endif
39
40 #ifdef CONFIG_CPM2
41
42 static void cpm2_cascade(unsigned int irq, struct irq_desc *desc)
43 {
44         struct irq_chip *chip = irq_desc_get_chip(desc);
45         int cascade_irq;
46
47         while ((cascade_irq = cpm2_get_irq()) >= 0)
48                 generic_handle_irq(cascade_irq);
49
50         chip->irq_eoi(&desc->irq_data);
51 }
52
53 #endif /* CONFIG_CPM2 */
54
55 static void __init sbc8560_pic_init(void)
56 {
57         struct mpic *mpic;
58         struct resource r;
59         struct device_node *np = NULL;
60 #ifdef CONFIG_CPM2
61         int irq;
62 #endif
63
64         np = of_find_node_by_type(np, "open-pic");
65         if (!np) {
66                 printk(KERN_ERR "Could not find open-pic node\n");
67                 return;
68         }
69
70         if (of_address_to_resource(np, 0, &r)) {
71                 printk(KERN_ERR "Could not map mpic register space\n");
72                 of_node_put(np);
73                 return;
74         }
75
76         mpic = mpic_alloc(np, r.start,
77                         MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
78                         0, 256, " OpenPIC  ");
79         BUG_ON(mpic == NULL);
80         of_node_put(np);
81
82         mpic_init(mpic);
83
84 #ifdef CONFIG_CPM2
85         /* Setup CPM2 PIC */
86         np = of_find_compatible_node(NULL, NULL, "fsl,cpm2-pic");
87         if (np == NULL) {
88                 printk(KERN_ERR "PIC init: can not find fsl,cpm2-pic node\n");
89                 return;
90         }
91         irq = irq_of_parse_and_map(np, 0);
92
93         cpm2_pic_init(np);
94         of_node_put(np);
95         irq_set_chained_handler(irq, cpm2_cascade);
96 #endif
97 }
98
99 /*
100  * Setup the architecture
101  */
102 #ifdef CONFIG_CPM2
103 struct cpm_pin {
104         int port, pin, flags;
105 };
106
107 static const struct cpm_pin sbc8560_pins[] = {
108         /* SCC1 */
109         {3, 29, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
110         {3, 30, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
111         {3, 31, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
112
113         /* SCC2 */
114         {3, 26, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
115         {3, 27, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
116         {3, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
117
118         /* FCC2 */
119         {1, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
120         {1, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
121         {1, 20, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
122         {1, 21, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
123         {1, 22, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
124         {1, 23, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
125         {1, 24, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
126         {1, 25, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
127         {1, 26, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
128         {1, 27, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
129         {1, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
130         {1, 29, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
131         {1, 30, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
132         {1, 31, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
133         {2, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK14 */
134         {2, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK13 */
135
136         /* FCC3 */
137         {1, 4, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
138         {1, 5, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
139         {1, 6, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
140         {1, 7, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
141         {1, 8, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
142         {1, 9, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
143         {1, 10, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
144         {1, 11, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
145         {1, 12, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
146         {1, 13, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
147         {1, 14, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
148         {1, 15, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY},
149         {1, 16, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
150         {1, 17, CPM_PIN_INPUT | CPM_PIN_PRIMARY},
151         {2, 16, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* CLK16 */
152         {2, 17, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* CLK15 */
153 };
154
155 static void __init init_ioports(void)
156 {
157         int i;
158
159         for (i = 0; i < ARRAY_SIZE(sbc8560_pins); i++) {
160                 const struct cpm_pin *pin = &sbc8560_pins[i];
161                 cpm2_set_pin(pin->port, pin->pin, pin->flags);
162         }
163
164         cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_RX);
165         cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_TX);
166         cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_RX);
167         cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_TX);
168         cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK13, CPM_CLK_RX);
169         cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK14, CPM_CLK_TX);
170         cpm2_clk_setup(CPM_CLK_FCC3, CPM_CLK15, CPM_CLK_RX);
171         cpm2_clk_setup(CPM_CLK_FCC3, CPM_CLK16, CPM_CLK_TX);
172 }
173 #endif
174
175 static void __init sbc8560_setup_arch(void)
176 {
177 #ifdef CONFIG_PCI
178         struct device_node *np;
179 #endif
180
181         if (ppc_md.progress)
182                 ppc_md.progress("sbc8560_setup_arch()", 0);
183
184 #ifdef CONFIG_CPM2
185         cpm2_reset();
186         init_ioports();
187 #endif
188
189 #ifdef CONFIG_PCI
190         for_each_compatible_node(np, "pci", "fsl,mpc8540-pci")
191                 fsl_add_bridge(np, 1);
192 #endif
193 }
194
195 static void sbc8560_show_cpuinfo(struct seq_file *m)
196 {
197         uint pvid, svid, phid1;
198
199         pvid = mfspr(SPRN_PVR);
200         svid = mfspr(SPRN_SVR);
201
202         seq_printf(m, "Vendor\t\t: Wind River\n");
203         seq_printf(m, "PVR\t\t: 0x%x\n", pvid);
204         seq_printf(m, "SVR\t\t: 0x%x\n", svid);
205
206         /* Display cpu Pll setting */
207         phid1 = mfspr(SPRN_HID1);
208         seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
209 }
210
211 static struct of_device_id __initdata of_bus_ids[] = {
212         { .name = "soc", },
213         { .type = "soc", },
214         { .name = "cpm", },
215         { .name = "localbus", },
216         { .compatible = "simple-bus", },
217         { .compatible = "gianfar", },
218         {},
219 };
220
221 static int __init declare_of_platform_devices(void)
222 {
223         of_platform_bus_probe(NULL, of_bus_ids, NULL);
224
225         return 0;
226 }
227 machine_device_initcall(sbc8560, declare_of_platform_devices);
228
229 /*
230  * Called very early, device-tree isn't unflattened
231  */
232 static int __init sbc8560_probe(void)
233 {
234         unsigned long root = of_get_flat_dt_root();
235
236         return of_flat_dt_is_compatible(root, "SBC8560");
237 }
238
239 #ifdef CONFIG_RTC_DRV_M48T59
240 static int __init sbc8560_rtc_init(void)
241 {
242         struct device_node *np;
243         struct resource res;
244         struct platform_device *rtc_dev;
245
246         np = of_find_compatible_node(NULL, NULL, "m48t59");
247         if (np == NULL) {
248                 printk("No RTC in DTB. Has it been eaten by wild dogs?\n");
249                 return -ENODEV;
250         }
251
252         of_address_to_resource(np, 0, &res);
253         of_node_put(np);
254
255         printk("Found RTC (m48t59) at i/o 0x%x\n", res.start);
256
257         rtc_dev = platform_device_register_simple("rtc-m48t59", 0, &res, 1);
258
259         if (IS_ERR(rtc_dev)) {
260                 printk("Registering sbc8560 RTC device failed\n");
261                 return PTR_ERR(rtc_dev);
262         }
263
264         return 0;
265 }
266
267 arch_initcall(sbc8560_rtc_init);
268
269 #endif  /* M48T59 */
270
271 static __u8 __iomem *brstcr;
272
273 static int __init sbc8560_bdrstcr_init(void)
274 {
275         struct device_node *np;
276         struct resource res;
277
278         np = of_find_compatible_node(NULL, NULL, "wrs,sbc8560-brstcr");
279         if (np == NULL) {
280                 printk(KERN_WARNING "sbc8560: No board specific RSTCR in DTB.\n");
281                 return -ENODEV;
282         }
283
284         of_address_to_resource(np, 0, &res);
285
286         printk(KERN_INFO "sbc8560: Found BRSTCR at i/o 0x%x\n", res.start);
287
288         brstcr = ioremap(res.start, res.end - res.start);
289         if(!brstcr)
290                 printk(KERN_WARNING "sbc8560: ioremap of brstcr failed.\n");
291
292         of_node_put(np);
293
294         return 0;
295 }
296
297 arch_initcall(sbc8560_bdrstcr_init);
298
299 void sbc8560_rstcr_restart(char * cmd)
300 {
301         local_irq_disable();
302         if(brstcr)
303                 clrbits8(brstcr, 0x80);
304
305         while(1);
306 }
307
308 define_machine(sbc8560) {
309         .name                   = "SBC8560",
310         .probe                  = sbc8560_probe,
311         .setup_arch             = sbc8560_setup_arch,
312         .init_IRQ               = sbc8560_pic_init,
313         .show_cpuinfo           = sbc8560_show_cpuinfo,
314         .get_irq                = mpic_get_irq,
315         .restart                = sbc8560_rstcr_restart,
316         .calibrate_decr         = generic_calibrate_decr,
317         .progress               = udbg_progress,
318 };