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clockevents: ARM sp804: allow clockevent name to be specified
[linux-2.6/x86.git] / arch / arm / mach-vexpress / v2m.c
blobf6fecdd0fbe8c5bb9b2308da1f0803747d7fb643
1 /*
2 * Versatile Express V2M Motherboard Support
3 */
4 #include <linux/device.h>
5 #include <linux/amba/bus.h>
6 #include <linux/amba/mmci.h>
7 #include <linux/io.h>
8 #include <linux/init.h>
9 #include <linux/platform_device.h>
10 #include <linux/ata_platform.h>
11 #include <linux/smsc911x.h>
12 #include <linux/spinlock.h>
13 #include <linux/sysdev.h>
14 #include <linux/usb/isp1760.h>
15 #include <linux/clkdev.h>
16
17 #include <asm/mach-types.h>
18 #include <asm/sizes.h>
19 #include <asm/mach/arch.h>
20 #include <asm/mach/flash.h>
21 #include <asm/mach/map.h>
22 #include <asm/mach/time.h>
23 #include <asm/hardware/arm_timer.h>
24 #include <asm/hardware/timer-sp.h>
25 #include <asm/hardware/sp810.h>
26
27 #include <mach/ct-ca9x4.h>
28 #include <mach/motherboard.h>
29
30 #include <plat/sched_clock.h>
31
32 #include "core.h"
33
34 #define V2M_PA_CS0 0x40000000
35 #define V2M_PA_CS1 0x44000000
36 #define V2M_PA_CS2 0x48000000
37 #define V2M_PA_CS3 0x4c000000
38 #define V2M_PA_CS7 0x10000000
39
40 static struct map_desc v2m_io_desc[] __initdata = {
41 {
42 .virtual = __MMIO_P2V(V2M_PA_CS7),
43 .pfn = __phys_to_pfn(V2M_PA_CS7),
44 .length = SZ_128K,
45 .type = MT_DEVICE,
46 },
47 };
48
49 static void __init v2m_init_early(void)
50 {
51 ct_desc->init_early();
52 versatile_sched_clock_init(MMIO_P2V(V2M_SYS_24MHZ), 24000000);
53 }
54
55 static void __init v2m_timer_init(void)
56 {
57 u32 scctrl;
58
59 /* Select 1MHz TIMCLK as the reference clock for SP804 timers */
60 scctrl = readl(MMIO_P2V(V2M_SYSCTL + SCCTRL));
61 scctrl |= SCCTRL_TIMEREN0SEL_TIMCLK;
62 scctrl |= SCCTRL_TIMEREN1SEL_TIMCLK;
63 writel(scctrl, MMIO_P2V(V2M_SYSCTL + SCCTRL));
64
65 writel(0, MMIO_P2V(V2M_TIMER0) + TIMER_CTRL);
66 writel(0, MMIO_P2V(V2M_TIMER1) + TIMER_CTRL);
67
68 sp804_clocksource_init(MMIO_P2V(V2M_TIMER1), "v2m-timer1");
69 sp804_clockevents_init(MMIO_P2V(V2M_TIMER0), IRQ_V2M_TIMER0,
70 "v2m-timer0");
71 }
72
73 static struct sys_timer v2m_timer = {
74 .init = v2m_timer_init,
75 };
76
77
78 static DEFINE_SPINLOCK(v2m_cfg_lock);
79
80 int v2m_cfg_write(u32 devfn, u32 data)
81 {
82 /* Configuration interface broken? */
83 u32 val;
84
85 printk("%s: writing %08x to %08x\n", __func__, data, devfn);
86
87 devfn |= SYS_CFG_START | SYS_CFG_WRITE;
88
89 spin_lock(&v2m_cfg_lock);
90 val = readl(MMIO_P2V(V2M_SYS_CFGSTAT));
91 writel(val & ~SYS_CFG_COMPLETE, MMIO_P2V(V2M_SYS_CFGSTAT));
92
93 writel(data, MMIO_P2V(V2M_SYS_CFGDATA));
94 writel(devfn, MMIO_P2V(V2M_SYS_CFGCTRL));
95
96 do {
97 val = readl(MMIO_P2V(V2M_SYS_CFGSTAT));
98 } while (val == 0);
99 spin_unlock(&v2m_cfg_lock);
100
101 return !!(val & SYS_CFG_ERR);
102 }
103
104 int v2m_cfg_read(u32 devfn, u32 *data)
105 {
106 u32 val;
107
108 devfn |= SYS_CFG_START;
109
110 spin_lock(&v2m_cfg_lock);
111 writel(0, MMIO_P2V(V2M_SYS_CFGSTAT));
112 writel(devfn, MMIO_P2V(V2M_SYS_CFGCTRL));
113
114 mb();
115
116 do {
117 cpu_relax();
118 val = readl(MMIO_P2V(V2M_SYS_CFGSTAT));
119 } while (val == 0);
120
121 *data = readl(MMIO_P2V(V2M_SYS_CFGDATA));
122 spin_unlock(&v2m_cfg_lock);
123
124 return !!(val & SYS_CFG_ERR);
125 }
126
127
128 static struct resource v2m_pcie_i2c_resource = {
129 .start = V2M_SERIAL_BUS_PCI,
130 .end = V2M_SERIAL_BUS_PCI + SZ_4K - 1,
131 .flags = IORESOURCE_MEM,
132 };
133
134 static struct platform_device v2m_pcie_i2c_device = {
135 .name = "versatile-i2c",
136 .id = 0,
137 .num_resources = 1,
138 .resource = &v2m_pcie_i2c_resource,
139 };
140
141 static struct resource v2m_ddc_i2c_resource = {
142 .start = V2M_SERIAL_BUS_DVI,
143 .end = V2M_SERIAL_BUS_DVI + SZ_4K - 1,
144 .flags = IORESOURCE_MEM,
145 };
146
147 static struct platform_device v2m_ddc_i2c_device = {
148 .name = "versatile-i2c",
149 .id = 1,
150 .num_resources = 1,
151 .resource = &v2m_ddc_i2c_resource,
152 };
153
154 static struct resource v2m_eth_resources[] = {
155 {
156 .start = V2M_LAN9118,
157 .end = V2M_LAN9118 + SZ_64K - 1,
158 .flags = IORESOURCE_MEM,
159 }, {
160 .start = IRQ_V2M_LAN9118,
161 .end = IRQ_V2M_LAN9118,
162 .flags = IORESOURCE_IRQ,
163 },
164 };
165
166 static struct smsc911x_platform_config v2m_eth_config = {
167 .flags = SMSC911X_USE_32BIT,
168 .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
169 .irq_type = SMSC911X_IRQ_TYPE_PUSH_PULL,
170 .phy_interface = PHY_INTERFACE_MODE_MII,
171 };
172
173 static struct platform_device v2m_eth_device = {
174 .name = "smsc911x",
175 .id = -1,
176 .resource = v2m_eth_resources,
177 .num_resources = ARRAY_SIZE(v2m_eth_resources),
178 .dev.platform_data = &v2m_eth_config,
179 };
180
181 static struct resource v2m_usb_resources[] = {
182 {
183 .start = V2M_ISP1761,
184 .end = V2M_ISP1761 + SZ_128K - 1,
185 .flags = IORESOURCE_MEM,
186 }, {
187 .start = IRQ_V2M_ISP1761,
188 .end = IRQ_V2M_ISP1761,
189 .flags = IORESOURCE_IRQ,
190 },
191 };
192
193 static struct isp1760_platform_data v2m_usb_config = {
194 .is_isp1761 = true,
195 .bus_width_16 = false,
196 .port1_otg = true,
197 .analog_oc = false,
198 .dack_polarity_high = false,
199 .dreq_polarity_high = false,
200 };
201
202 static struct platform_device v2m_usb_device = {
203 .name = "isp1760",
204 .id = -1,
205 .resource = v2m_usb_resources,
206 .num_resources = ARRAY_SIZE(v2m_usb_resources),
207 .dev.platform_data = &v2m_usb_config,
208 };
209
210 static int v2m_flash_init(void)
211 {
212 writel(0, MMIO_P2V(V2M_SYS_FLASH));
213 return 0;
214 }
215
216 static void v2m_flash_exit(void)
217 {
218 writel(0, MMIO_P2V(V2M_SYS_FLASH));
219 }
220
221 static void v2m_flash_set_vpp(int on)
222 {
223 writel(on != 0, MMIO_P2V(V2M_SYS_FLASH));
224 }
225
226 static struct flash_platform_data v2m_flash_data = {
227 .map_name = "cfi_probe",
228 .width = 4,
229 .init = v2m_flash_init,
230 .exit = v2m_flash_exit,
231 .set_vpp = v2m_flash_set_vpp,
232 };
233
234 static struct resource v2m_flash_resources[] = {
235 {
236 .start = V2M_NOR0,
237 .end = V2M_NOR0 + SZ_64M - 1,
238 .flags = IORESOURCE_MEM,
239 }, {
240 .start = V2M_NOR1,
241 .end = V2M_NOR1 + SZ_64M - 1,
242 .flags = IORESOURCE_MEM,
243 },
244 };
245
246 static struct platform_device v2m_flash_device = {
247 .name = "armflash",
248 .id = -1,
249 .resource = v2m_flash_resources,
250 .num_resources = ARRAY_SIZE(v2m_flash_resources),
251 .dev.platform_data = &v2m_flash_data,
252 };
253
254 static struct pata_platform_info v2m_pata_data = {
255 .ioport_shift = 2,
256 };
257
258 static struct resource v2m_pata_resources[] = {
259 {
260 .start = V2M_CF,
261 .end = V2M_CF + 0xff,
262 .flags = IORESOURCE_MEM,
263 }, {
264 .start = V2M_CF + 0x100,
265 .end = V2M_CF + SZ_4K - 1,
266 .flags = IORESOURCE_MEM,
267 },
268 };
269
270 static struct platform_device v2m_cf_device = {
271 .name = "pata_platform",
272 .id = -1,
273 .resource = v2m_pata_resources,
274 .num_resources = ARRAY_SIZE(v2m_pata_resources),
275 .dev.platform_data = &v2m_pata_data,
276 };
277
278 static unsigned int v2m_mmci_status(struct device *dev)
279 {
280 return readl(MMIO_P2V(V2M_SYS_MCI)) & (1 << 0);
281 }
282
283 static struct mmci_platform_data v2m_mmci_data = {
284 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
285 .status = v2m_mmci_status,
286 };
287
288 static AMBA_DEVICE(aaci, "mb:aaci", V2M_AACI, NULL);
289 static AMBA_DEVICE(mmci, "mb:mmci", V2M_MMCI, &v2m_mmci_data);
290 static AMBA_DEVICE(kmi0, "mb:kmi0", V2M_KMI0, NULL);
291 static AMBA_DEVICE(kmi1, "mb:kmi1", V2M_KMI1, NULL);
292 static AMBA_DEVICE(uart0, "mb:uart0", V2M_UART0, NULL);
293 static AMBA_DEVICE(uart1, "mb:uart1", V2M_UART1, NULL);
294 static AMBA_DEVICE(uart2, "mb:uart2", V2M_UART2, NULL);
295 static AMBA_DEVICE(uart3, "mb:uart3", V2M_UART3, NULL);
296 static AMBA_DEVICE(wdt, "mb:wdt", V2M_WDT, NULL);
297 static AMBA_DEVICE(rtc, "mb:rtc", V2M_RTC, NULL);
298
299 static struct amba_device *v2m_amba_devs[] __initdata = {
300 &aaci_device,
301 &mmci_device,
302 &kmi0_device,
303 &kmi1_device,
304 &uart0_device,
305 &uart1_device,
306 &uart2_device,
307 &uart3_device,
308 &wdt_device,
309 &rtc_device,
310 };
311
312
313 static long v2m_osc_round(struct clk *clk, unsigned long rate)
314 {
315 return rate;
316 }
317
318 static int v2m_osc1_set(struct clk *clk, unsigned long rate)
319 {
320 return v2m_cfg_write(SYS_CFG_OSC | SYS_CFG_SITE_MB | 1, rate);
321 }
322
323 static const struct clk_ops osc1_clk_ops = {
324 .round = v2m_osc_round,
325 .set = v2m_osc1_set,
326 };
327
328 static struct clk osc1_clk = {
329 .ops = &osc1_clk_ops,
330 .rate = 24000000,
331 };
332
333 static struct clk osc2_clk = {
334 .rate = 24000000,
335 };
336
337 static struct clk v2m_sp804_clk = {
338 .rate = 1000000,
339 };
340
341 static struct clk dummy_apb_pclk;
342
343 static struct clk_lookup v2m_lookups[] = {
344 { /* AMBA bus clock */
345 .con_id = "apb_pclk",
346 .clk = &dummy_apb_pclk,
347 }, { /* UART0 */
348 .dev_id = "mb:uart0",
349 .clk = &osc2_clk,
350 }, { /* UART1 */
351 .dev_id = "mb:uart1",
352 .clk = &osc2_clk,
353 }, { /* UART2 */
354 .dev_id = "mb:uart2",
355 .clk = &osc2_clk,
356 }, { /* UART3 */
357 .dev_id = "mb:uart3",
358 .clk = &osc2_clk,
359 }, { /* KMI0 */
360 .dev_id = "mb:kmi0",
361 .clk = &osc2_clk,
362 }, { /* KMI1 */
363 .dev_id = "mb:kmi1",
364 .clk = &osc2_clk,
365 }, { /* MMC0 */
366 .dev_id = "mb:mmci",
367 .clk = &osc2_clk,
368 }, { /* CLCD */
369 .dev_id = "mb:clcd",
370 .clk = &osc1_clk,
371 }, { /* SP804 timers */
372 .dev_id = "sp804",
373 .con_id = "v2m-timer1",
374 .clk = &v2m_sp804_clk,
375 },
376 };
377
378 static void v2m_power_off(void)
379 {
380 if (v2m_cfg_write(SYS_CFG_SHUTDOWN | SYS_CFG_SITE_MB, 0))
381 printk(KERN_EMERG "Unable to shutdown\n");
382 }
383
384 static void v2m_restart(char str, const char *cmd)
385 {
386 if (v2m_cfg_write(SYS_CFG_REBOOT | SYS_CFG_SITE_MB, 0))
387 printk(KERN_EMERG "Unable to reboot\n");
388 }
389
390 struct ct_desc *ct_desc;
391
392 static struct ct_desc *ct_descs[] __initdata = {
393 #ifdef CONFIG_ARCH_VEXPRESS_CA9X4
394 &ct_ca9x4_desc,
395 #endif
396 };
397
398 static void __init v2m_populate_ct_desc(void)
399 {
400 int i;
401 u32 current_tile_id;
402
403 ct_desc = NULL;
404 current_tile_id = readl(MMIO_P2V(V2M_SYS_PROCID0)) & V2M_CT_ID_MASK;
405
406 for (i = 0; i < ARRAY_SIZE(ct_descs) && !ct_desc; ++i)
407 if (ct_descs[i]->id == current_tile_id)
408 ct_desc = ct_descs[i];
409
410 if (!ct_desc)
411 panic("vexpress: failed to populate core tile description "
412 "for tile ID 0x%8x\n", current_tile_id);
413 }
414
415 static void __init v2m_map_io(void)
416 {
417 iotable_init(v2m_io_desc, ARRAY_SIZE(v2m_io_desc));
418 v2m_populate_ct_desc();
419 ct_desc->map_io();
420 }
421
422 static void __init v2m_init_irq(void)
423 {
424 ct_desc->init_irq();
425 }
426
427 static void __init v2m_init(void)
428 {
429 int i;
430
431 clkdev_add_table(v2m_lookups, ARRAY_SIZE(v2m_lookups));
432
433 platform_device_register(&v2m_pcie_i2c_device);
434 platform_device_register(&v2m_ddc_i2c_device);
435 platform_device_register(&v2m_flash_device);
436 platform_device_register(&v2m_cf_device);
437 platform_device_register(&v2m_eth_device);
438 platform_device_register(&v2m_usb_device);
439
440 for (i = 0; i < ARRAY_SIZE(v2m_amba_devs); i++)
441 amba_device_register(v2m_amba_devs[i], &iomem_resource);
442
443 pm_power_off = v2m_power_off;
444 arm_pm_restart = v2m_restart;
445
446 ct_desc->init_tile();
447 }
448
449 MACHINE_START(VEXPRESS, "ARM-Versatile Express")
450 .boot_params = PLAT_PHYS_OFFSET + 0x00000100,
451 .map_io = v2m_map_io,
452 .init_early = v2m_init_early,
453 .init_irq = v2m_init_irq,
454 .timer = &v2m_timer,
455 .init_machine = v2m_init,
456 MACHINE_END
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