Merge branches 'fixes', 'pgt-next' and 'versatile' into devel
[deliverable/linux.git] / arch / arm / mach-vexpress / v2m.c
CommitLineData
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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>
95c34f83 10#include <linux/ata_platform.h>
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11#include <linux/smsc911x.h>
12#include <linux/spinlock.h>
13#include <linux/sysdev.h>
14#include <linux/usb/isp1760.h>
6d803ba7 15#include <linux/clkdev.h>
ceade897 16
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17#include <asm/sizes.h>
18#include <asm/mach/flash.h>
19#include <asm/mach/map.h>
20#include <asm/mach/time.h>
21#include <asm/hardware/arm_timer.h>
58daf18c 22#include <asm/hardware/timer-sp.h>
baaece22 23#include <asm/hardware/sp810.h>
ceade897 24
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25#include <mach/motherboard.h>
26
0af85dda 27#include <plat/sched_clock.h>
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28
29#include "core.h"
30
31#define V2M_PA_CS0 0x40000000
32#define V2M_PA_CS1 0x44000000
33#define V2M_PA_CS2 0x48000000
34#define V2M_PA_CS3 0x4c000000
35#define V2M_PA_CS7 0x10000000
36
37static struct map_desc v2m_io_desc[] __initdata = {
38 {
39 .virtual = __MMIO_P2V(V2M_PA_CS7),
40 .pfn = __phys_to_pfn(V2M_PA_CS7),
41 .length = SZ_128K,
42 .type = MT_DEVICE,
43 },
44};
45
46void __init v2m_map_io(struct map_desc *tile, size_t num)
47{
48 iotable_init(v2m_io_desc, ARRAY_SIZE(v2m_io_desc));
49 iotable_init(tile, num);
50}
51
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52void __init v2m_init_early(void)
53{
54 versatile_sched_clock_init(MMIO_P2V(V2M_SYS_24MHZ), 24000000);
55}
ceade897 56
cdaf9a2f 57static void __init v2m_timer_init(void)
ceade897 58{
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59 u32 scctrl;
60
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61 /* Select 1MHz TIMCLK as the reference clock for SP804 timers */
62 scctrl = readl(MMIO_P2V(V2M_SYSCTL + SCCTRL));
63 scctrl |= SCCTRL_TIMEREN0SEL_TIMCLK;
64 scctrl |= SCCTRL_TIMEREN1SEL_TIMCLK;
65 writel(scctrl, MMIO_P2V(V2M_SYSCTL + SCCTRL));
66
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67 writel(0, MMIO_P2V(V2M_TIMER0) + TIMER_CTRL);
68 writel(0, MMIO_P2V(V2M_TIMER1) + TIMER_CTRL);
69
70 sp804_clocksource_init(MMIO_P2V(V2M_TIMER1));
71 sp804_clockevents_init(MMIO_P2V(V2M_TIMER0), IRQ_V2M_TIMER0);
72}
73
74struct sys_timer v2m_timer = {
75 .init = v2m_timer_init,
76};
77
78
79static DEFINE_SPINLOCK(v2m_cfg_lock);
80
81int v2m_cfg_write(u32 devfn, u32 data)
82{
83 /* Configuration interface broken? */
84 u32 val;
85
86 printk("%s: writing %08x to %08x\n", __func__, data, devfn);
87
88 devfn |= SYS_CFG_START | SYS_CFG_WRITE;
89
90 spin_lock(&v2m_cfg_lock);
91 val = readl(MMIO_P2V(V2M_SYS_CFGSTAT));
92 writel(val & ~SYS_CFG_COMPLETE, MMIO_P2V(V2M_SYS_CFGSTAT));
93
94 writel(data, MMIO_P2V(V2M_SYS_CFGDATA));
95 writel(devfn, MMIO_P2V(V2M_SYS_CFGCTRL));
96
97 do {
98 val = readl(MMIO_P2V(V2M_SYS_CFGSTAT));
99 } while (val == 0);
100 spin_unlock(&v2m_cfg_lock);
101
102 return !!(val & SYS_CFG_ERR);
103}
104
105int v2m_cfg_read(u32 devfn, u32 *data)
106{
107 u32 val;
108
109 devfn |= SYS_CFG_START;
110
111 spin_lock(&v2m_cfg_lock);
112 writel(0, MMIO_P2V(V2M_SYS_CFGSTAT));
113 writel(devfn, MMIO_P2V(V2M_SYS_CFGCTRL));
114
115 mb();
116
117 do {
118 cpu_relax();
119 val = readl(MMIO_P2V(V2M_SYS_CFGSTAT));
120 } while (val == 0);
121
122 *data = readl(MMIO_P2V(V2M_SYS_CFGDATA));
123 spin_unlock(&v2m_cfg_lock);
124
125 return !!(val & SYS_CFG_ERR);
126}
127
128
129static struct resource v2m_pcie_i2c_resource = {
130 .start = V2M_SERIAL_BUS_PCI,
131 .end = V2M_SERIAL_BUS_PCI + SZ_4K - 1,
132 .flags = IORESOURCE_MEM,
133};
134
135static struct platform_device v2m_pcie_i2c_device = {
136 .name = "versatile-i2c",
137 .id = 0,
138 .num_resources = 1,
139 .resource = &v2m_pcie_i2c_resource,
140};
141
142static struct resource v2m_ddc_i2c_resource = {
143 .start = V2M_SERIAL_BUS_DVI,
144 .end = V2M_SERIAL_BUS_DVI + SZ_4K - 1,
145 .flags = IORESOURCE_MEM,
146};
147
148static struct platform_device v2m_ddc_i2c_device = {
149 .name = "versatile-i2c",
150 .id = 1,
151 .num_resources = 1,
152 .resource = &v2m_ddc_i2c_resource,
153};
154
155static struct resource v2m_eth_resources[] = {
156 {
157 .start = V2M_LAN9118,
158 .end = V2M_LAN9118 + SZ_64K - 1,
159 .flags = IORESOURCE_MEM,
160 }, {
161 .start = IRQ_V2M_LAN9118,
162 .end = IRQ_V2M_LAN9118,
163 .flags = IORESOURCE_IRQ,
164 },
165};
166
167static struct smsc911x_platform_config v2m_eth_config = {
168 .flags = SMSC911X_USE_32BIT,
169 .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
170 .irq_type = SMSC911X_IRQ_TYPE_PUSH_PULL,
171 .phy_interface = PHY_INTERFACE_MODE_MII,
172};
173
174static struct platform_device v2m_eth_device = {
175 .name = "smsc911x",
176 .id = -1,
177 .resource = v2m_eth_resources,
178 .num_resources = ARRAY_SIZE(v2m_eth_resources),
179 .dev.platform_data = &v2m_eth_config,
180};
181
182static struct resource v2m_usb_resources[] = {
183 {
184 .start = V2M_ISP1761,
185 .end = V2M_ISP1761 + SZ_128K - 1,
186 .flags = IORESOURCE_MEM,
187 }, {
188 .start = IRQ_V2M_ISP1761,
189 .end = IRQ_V2M_ISP1761,
190 .flags = IORESOURCE_IRQ,
191 },
192};
193
194static struct isp1760_platform_data v2m_usb_config = {
195 .is_isp1761 = true,
196 .bus_width_16 = false,
197 .port1_otg = true,
198 .analog_oc = false,
199 .dack_polarity_high = false,
200 .dreq_polarity_high = false,
201};
202
203static struct platform_device v2m_usb_device = {
204 .name = "isp1760",
205 .id = -1,
206 .resource = v2m_usb_resources,
207 .num_resources = ARRAY_SIZE(v2m_usb_resources),
208 .dev.platform_data = &v2m_usb_config,
209};
210
211static int v2m_flash_init(void)
212{
213 writel(0, MMIO_P2V(V2M_SYS_FLASH));
214 return 0;
215}
216
217static void v2m_flash_exit(void)
218{
219 writel(0, MMIO_P2V(V2M_SYS_FLASH));
220}
221
222static void v2m_flash_set_vpp(int on)
223{
224 writel(on != 0, MMIO_P2V(V2M_SYS_FLASH));
225}
226
227static struct flash_platform_data v2m_flash_data = {
228 .map_name = "cfi_probe",
229 .width = 4,
230 .init = v2m_flash_init,
231 .exit = v2m_flash_exit,
232 .set_vpp = v2m_flash_set_vpp,
233};
234
235static struct resource v2m_flash_resources[] = {
236 {
237 .start = V2M_NOR0,
238 .end = V2M_NOR0 + SZ_64M - 1,
239 .flags = IORESOURCE_MEM,
240 }, {
241 .start = V2M_NOR1,
242 .end = V2M_NOR1 + SZ_64M - 1,
243 .flags = IORESOURCE_MEM,
244 },
245};
246
247static struct platform_device v2m_flash_device = {
248 .name = "armflash",
249 .id = -1,
250 .resource = v2m_flash_resources,
251 .num_resources = ARRAY_SIZE(v2m_flash_resources),
252 .dev.platform_data = &v2m_flash_data,
253};
254
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255static struct pata_platform_info v2m_pata_data = {
256 .ioport_shift = 2,
257};
258
259static struct resource v2m_pata_resources[] = {
260 {
261 .start = V2M_CF,
262 .end = V2M_CF + 0xff,
263 .flags = IORESOURCE_MEM,
264 }, {
265 .start = V2M_CF + 0x100,
266 .end = V2M_CF + SZ_4K - 1,
267 .flags = IORESOURCE_MEM,
268 },
269};
270
271static struct platform_device v2m_cf_device = {
272 .name = "pata_platform",
273 .id = -1,
274 .resource = v2m_pata_resources,
275 .num_resources = ARRAY_SIZE(v2m_pata_resources),
276 .dev.platform_data = &v2m_pata_data,
277};
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278
279static unsigned int v2m_mmci_status(struct device *dev)
280{
74bc8093 281 return readl(MMIO_P2V(V2M_SYS_MCI)) & (1 << 0);
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282}
283
284static struct mmci_platform_data v2m_mmci_data = {
285 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
286 .status = v2m_mmci_status,
287};
288
289static AMBA_DEVICE(aaci, "mb:aaci", V2M_AACI, NULL);
290static AMBA_DEVICE(mmci, "mb:mmci", V2M_MMCI, &v2m_mmci_data);
291static AMBA_DEVICE(kmi0, "mb:kmi0", V2M_KMI0, NULL);
292static AMBA_DEVICE(kmi1, "mb:kmi1", V2M_KMI1, NULL);
293static AMBA_DEVICE(uart0, "mb:uart0", V2M_UART0, NULL);
294static AMBA_DEVICE(uart1, "mb:uart1", V2M_UART1, NULL);
295static AMBA_DEVICE(uart2, "mb:uart2", V2M_UART2, NULL);
296static AMBA_DEVICE(uart3, "mb:uart3", V2M_UART3, NULL);
297static AMBA_DEVICE(wdt, "mb:wdt", V2M_WDT, NULL);
298static AMBA_DEVICE(rtc, "mb:rtc", V2M_RTC, NULL);
299
300static struct amba_device *v2m_amba_devs[] __initdata = {
301 &aaci_device,
302 &mmci_device,
303 &kmi0_device,
304 &kmi1_device,
305 &uart0_device,
306 &uart1_device,
307 &uart2_device,
308 &uart3_device,
309 &wdt_device,
310 &rtc_device,
311};
312
313
314static long v2m_osc_round(struct clk *clk, unsigned long rate)
315{
316 return rate;
317}
318
319static int v2m_osc1_set(struct clk *clk, unsigned long rate)
320{
321 return v2m_cfg_write(SYS_CFG_OSC | SYS_CFG_SITE_MB | 1, rate);
322}
323
324static const struct clk_ops osc1_clk_ops = {
325 .round = v2m_osc_round,
326 .set = v2m_osc1_set,
327};
328
329static struct clk osc1_clk = {
330 .ops = &osc1_clk_ops,
331 .rate = 24000000,
332};
333
334static struct clk osc2_clk = {
335 .rate = 24000000,
336};
337
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338static struct clk dummy_apb_pclk;
339
ceade897 340static struct clk_lookup v2m_lookups[] = {
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341 { /* AMBA bus clock */
342 .con_id = "apb_pclk",
343 .clk = &dummy_apb_pclk,
344 }, { /* UART0 */
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345 .dev_id = "mb:uart0",
346 .clk = &osc2_clk,
347 }, { /* UART1 */
348 .dev_id = "mb:uart1",
349 .clk = &osc2_clk,
350 }, { /* UART2 */
351 .dev_id = "mb:uart2",
352 .clk = &osc2_clk,
353 }, { /* UART3 */
354 .dev_id = "mb:uart3",
355 .clk = &osc2_clk,
356 }, { /* KMI0 */
357 .dev_id = "mb:kmi0",
358 .clk = &osc2_clk,
359 }, { /* KMI1 */
360 .dev_id = "mb:kmi1",
361 .clk = &osc2_clk,
362 }, { /* MMC0 */
363 .dev_id = "mb:mmci",
364 .clk = &osc2_clk,
365 }, { /* CLCD */
366 .dev_id = "mb:clcd",
367 .clk = &osc1_clk,
368 },
369};
370
371static void v2m_power_off(void)
372{
373 if (v2m_cfg_write(SYS_CFG_SHUTDOWN | SYS_CFG_SITE_MB, 0))
374 printk(KERN_EMERG "Unable to shutdown\n");
375}
376
377static void v2m_restart(char str, const char *cmd)
378{
379 if (v2m_cfg_write(SYS_CFG_REBOOT | SYS_CFG_SITE_MB, 0))
380 printk(KERN_EMERG "Unable to reboot\n");
381}
382
383static int __init v2m_init(void)
384{
385 int i;
386
387 clkdev_add_table(v2m_lookups, ARRAY_SIZE(v2m_lookups));
388
389 platform_device_register(&v2m_pcie_i2c_device);
390 platform_device_register(&v2m_ddc_i2c_device);
391 platform_device_register(&v2m_flash_device);
95c34f83 392 platform_device_register(&v2m_cf_device);
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393 platform_device_register(&v2m_eth_device);
394 platform_device_register(&v2m_usb_device);
395
396 for (i = 0; i < ARRAY_SIZE(v2m_amba_devs); i++)
397 amba_device_register(v2m_amba_devs[i], &iomem_resource);
398
399 pm_power_off = v2m_power_off;
400 arm_pm_restart = v2m_restart;
401
402 return 0;
403}
404arch_initcall(v2m_init);
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