Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
[linux-2.6.git] / arch / arm / mach-vexpress / v2m.c
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/smsc911x.h>
11 #include <linux/spinlock.h>
12 #include <linux/sysdev.h>
13 #include <linux/usb/isp1760.h>
14
15 #include <asm/clkdev.h>
16 #include <asm/sizes.h>
17 #include <asm/mach/flash.h>
18 #include <asm/mach/map.h>
19 #include <asm/mach/time.h>
20 #include <asm/hardware/arm_timer.h>
21
22 #include <mach/clkdev.h>
23 #include <mach/motherboard.h>
24
25 #include <plat/timer-sp.h>
26
27 #include "core.h"
28
29 #define V2M_PA_CS0      0x40000000
30 #define V2M_PA_CS1      0x44000000
31 #define V2M_PA_CS2      0x48000000
32 #define V2M_PA_CS3      0x4c000000
33 #define V2M_PA_CS7      0x10000000
34
35 static struct map_desc v2m_io_desc[] __initdata = {
36         {
37                 .virtual        = __MMIO_P2V(V2M_PA_CS7),
38                 .pfn            = __phys_to_pfn(V2M_PA_CS7),
39                 .length         = SZ_128K,
40                 .type           = MT_DEVICE,
41         },
42 };
43
44 void __init v2m_map_io(struct map_desc *tile, size_t num)
45 {
46         iotable_init(v2m_io_desc, ARRAY_SIZE(v2m_io_desc));
47         iotable_init(tile, num);
48 }
49
50
51 static void v2m_timer_init(void)
52 {
53         writel(0, MMIO_P2V(V2M_TIMER0) + TIMER_CTRL);
54         writel(0, MMIO_P2V(V2M_TIMER1) + TIMER_CTRL);
55
56         sp804_clocksource_init(MMIO_P2V(V2M_TIMER1));
57         sp804_clockevents_init(MMIO_P2V(V2M_TIMER0), IRQ_V2M_TIMER0);
58 }
59
60 struct sys_timer v2m_timer = {
61         .init   = v2m_timer_init,
62 };
63
64
65 static DEFINE_SPINLOCK(v2m_cfg_lock);
66
67 int v2m_cfg_write(u32 devfn, u32 data)
68 {
69         /* Configuration interface broken? */
70         u32 val;
71
72         printk("%s: writing %08x to %08x\n", __func__, data, devfn);
73
74         devfn |= SYS_CFG_START | SYS_CFG_WRITE;
75
76         spin_lock(&v2m_cfg_lock);
77         val = readl(MMIO_P2V(V2M_SYS_CFGSTAT));
78         writel(val & ~SYS_CFG_COMPLETE, MMIO_P2V(V2M_SYS_CFGSTAT));
79
80         writel(data, MMIO_P2V(V2M_SYS_CFGDATA));
81         writel(devfn, MMIO_P2V(V2M_SYS_CFGCTRL));
82
83         do {
84                 val = readl(MMIO_P2V(V2M_SYS_CFGSTAT));
85         } while (val == 0);
86         spin_unlock(&v2m_cfg_lock);
87
88         return !!(val & SYS_CFG_ERR);
89 }
90
91 int v2m_cfg_read(u32 devfn, u32 *data)
92 {
93         u32 val;
94
95         devfn |= SYS_CFG_START;
96
97         spin_lock(&v2m_cfg_lock);
98         writel(0, MMIO_P2V(V2M_SYS_CFGSTAT));
99         writel(devfn, MMIO_P2V(V2M_SYS_CFGCTRL));
100
101         mb();
102
103         do {
104                 cpu_relax();
105                 val = readl(MMIO_P2V(V2M_SYS_CFGSTAT));
106         } while (val == 0);
107
108         *data = readl(MMIO_P2V(V2M_SYS_CFGDATA));
109         spin_unlock(&v2m_cfg_lock);
110
111         return !!(val & SYS_CFG_ERR);
112 }
113
114
115 static struct resource v2m_pcie_i2c_resource = {
116         .start  = V2M_SERIAL_BUS_PCI,
117         .end    = V2M_SERIAL_BUS_PCI + SZ_4K - 1,
118         .flags  = IORESOURCE_MEM,
119 };
120
121 static struct platform_device v2m_pcie_i2c_device = {
122         .name           = "versatile-i2c",
123         .id             = 0,
124         .num_resources  = 1,
125         .resource       = &v2m_pcie_i2c_resource,
126 };
127
128 static struct resource v2m_ddc_i2c_resource = {
129         .start  = V2M_SERIAL_BUS_DVI,
130         .end    = V2M_SERIAL_BUS_DVI + SZ_4K - 1,
131         .flags  = IORESOURCE_MEM,
132 };
133
134 static struct platform_device v2m_ddc_i2c_device = {
135         .name           = "versatile-i2c",
136         .id             = 1,
137         .num_resources  = 1,
138         .resource       = &v2m_ddc_i2c_resource,
139 };
140
141 static struct resource v2m_eth_resources[] = {
142         {
143                 .start  = V2M_LAN9118,
144                 .end    = V2M_LAN9118 + SZ_64K - 1,
145                 .flags  = IORESOURCE_MEM,
146         }, {
147                 .start  = IRQ_V2M_LAN9118,
148                 .end    = IRQ_V2M_LAN9118,
149                 .flags  = IORESOURCE_IRQ,
150         },
151 };
152
153 static struct smsc911x_platform_config v2m_eth_config = {
154         .flags          = SMSC911X_USE_32BIT,
155         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
156         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
157         .phy_interface  = PHY_INTERFACE_MODE_MII,
158 };
159
160 static struct platform_device v2m_eth_device = {
161         .name           = "smsc911x",
162         .id             = -1,
163         .resource       = v2m_eth_resources,
164         .num_resources  = ARRAY_SIZE(v2m_eth_resources),
165         .dev.platform_data = &v2m_eth_config,
166 };
167
168 static struct resource v2m_usb_resources[] = {
169         {
170                 .start  = V2M_ISP1761,
171                 .end    = V2M_ISP1761 + SZ_128K - 1,
172                 .flags  = IORESOURCE_MEM,
173         }, {
174                 .start  = IRQ_V2M_ISP1761,
175                 .end    = IRQ_V2M_ISP1761,
176                 .flags  = IORESOURCE_IRQ,
177         },
178 };
179
180 static struct isp1760_platform_data v2m_usb_config = {
181         .is_isp1761             = true,
182         .bus_width_16           = false,
183         .port1_otg              = true,
184         .analog_oc              = false,
185         .dack_polarity_high     = false,
186         .dreq_polarity_high     = false,
187 };
188
189 static struct platform_device v2m_usb_device = {
190         .name           = "isp1760",
191         .id             = -1,
192         .resource       = v2m_usb_resources,
193         .num_resources  = ARRAY_SIZE(v2m_usb_resources),
194         .dev.platform_data = &v2m_usb_config,
195 };
196
197 static int v2m_flash_init(void)
198 {
199         writel(0, MMIO_P2V(V2M_SYS_FLASH));
200         return 0;
201 }
202
203 static void v2m_flash_exit(void)
204 {
205         writel(0, MMIO_P2V(V2M_SYS_FLASH));
206 }
207
208 static void v2m_flash_set_vpp(int on)
209 {
210         writel(on != 0, MMIO_P2V(V2M_SYS_FLASH));
211 }
212
213 static struct flash_platform_data v2m_flash_data = {
214         .map_name       = "cfi_probe",
215         .width          = 4,
216         .init           = v2m_flash_init,
217         .exit           = v2m_flash_exit,
218         .set_vpp        = v2m_flash_set_vpp,
219 };
220
221 static struct resource v2m_flash_resources[] = {
222         {
223                 .start  = V2M_NOR0,
224                 .end    = V2M_NOR0 + SZ_64M - 1,
225                 .flags  = IORESOURCE_MEM,
226         }, {
227                 .start  = V2M_NOR1,
228                 .end    = V2M_NOR1 + SZ_64M - 1,
229                 .flags  = IORESOURCE_MEM,
230         },
231 };
232
233 static struct platform_device v2m_flash_device = {
234         .name           = "armflash",
235         .id             = -1,
236         .resource       = v2m_flash_resources,
237         .num_resources  = ARRAY_SIZE(v2m_flash_resources),
238         .dev.platform_data = &v2m_flash_data,
239 };
240
241
242 static unsigned int v2m_mmci_status(struct device *dev)
243 {
244         return readl(MMIO_P2V(V2M_SYS_MCI)) & (1 << 0);
245 }
246
247 static struct mmci_platform_data v2m_mmci_data = {
248         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
249         .status         = v2m_mmci_status,
250 };
251
252 static AMBA_DEVICE(aaci,  "mb:aaci",  V2M_AACI, NULL);
253 static AMBA_DEVICE(mmci,  "mb:mmci",  V2M_MMCI, &v2m_mmci_data);
254 static AMBA_DEVICE(kmi0,  "mb:kmi0",  V2M_KMI0, NULL);
255 static AMBA_DEVICE(kmi1,  "mb:kmi1",  V2M_KMI1, NULL);
256 static AMBA_DEVICE(uart0, "mb:uart0", V2M_UART0, NULL);
257 static AMBA_DEVICE(uart1, "mb:uart1", V2M_UART1, NULL);
258 static AMBA_DEVICE(uart2, "mb:uart2", V2M_UART2, NULL);
259 static AMBA_DEVICE(uart3, "mb:uart3", V2M_UART3, NULL);
260 static AMBA_DEVICE(wdt,   "mb:wdt",   V2M_WDT, NULL);
261 static AMBA_DEVICE(rtc,   "mb:rtc",   V2M_RTC, NULL);
262
263 static struct amba_device *v2m_amba_devs[] __initdata = {
264         &aaci_device,
265         &mmci_device,
266         &kmi0_device,
267         &kmi1_device,
268         &uart0_device,
269         &uart1_device,
270         &uart2_device,
271         &uart3_device,
272         &wdt_device,
273         &rtc_device,
274 };
275
276
277 static long v2m_osc_round(struct clk *clk, unsigned long rate)
278 {
279         return rate;
280 }
281
282 static int v2m_osc1_set(struct clk *clk, unsigned long rate)
283 {
284         return v2m_cfg_write(SYS_CFG_OSC | SYS_CFG_SITE_MB | 1, rate);
285 }
286
287 static const struct clk_ops osc1_clk_ops = {
288         .round  = v2m_osc_round,
289         .set    = v2m_osc1_set,
290 };
291
292 static struct clk osc1_clk = {
293         .ops    = &osc1_clk_ops,
294         .rate   = 24000000,
295 };
296
297 static struct clk osc2_clk = {
298         .rate   = 24000000,
299 };
300
301 static struct clk dummy_apb_pclk;
302
303 static struct clk_lookup v2m_lookups[] = {
304         {       /* AMBA bus clock */
305                 .con_id         = "apb_pclk",
306                 .clk            = &dummy_apb_pclk,
307         }, {    /* UART0 */
308                 .dev_id         = "mb:uart0",
309                 .clk            = &osc2_clk,
310         }, {    /* UART1 */
311                 .dev_id         = "mb:uart1",
312                 .clk            = &osc2_clk,
313         }, {    /* UART2 */
314                 .dev_id         = "mb:uart2",
315                 .clk            = &osc2_clk,
316         }, {    /* UART3 */
317                 .dev_id         = "mb:uart3",
318                 .clk            = &osc2_clk,
319         }, {    /* KMI0 */
320                 .dev_id         = "mb:kmi0",
321                 .clk            = &osc2_clk,
322         }, {    /* KMI1 */
323                 .dev_id         = "mb:kmi1",
324                 .clk            = &osc2_clk,
325         }, {    /* MMC0 */
326                 .dev_id         = "mb:mmci",
327                 .clk            = &osc2_clk,
328         }, {    /* CLCD */
329                 .dev_id         = "mb:clcd",
330                 .clk            = &osc1_clk,
331         },
332 };
333
334 static void v2m_power_off(void)
335 {
336         if (v2m_cfg_write(SYS_CFG_SHUTDOWN | SYS_CFG_SITE_MB, 0))
337                 printk(KERN_EMERG "Unable to shutdown\n");
338 }
339
340 static void v2m_restart(char str, const char *cmd)
341 {
342         if (v2m_cfg_write(SYS_CFG_REBOOT | SYS_CFG_SITE_MB, 0))
343                 printk(KERN_EMERG "Unable to reboot\n");
344 }
345
346 static int __init v2m_init(void)
347 {
348         int i;
349
350         clkdev_add_table(v2m_lookups, ARRAY_SIZE(v2m_lookups));
351
352         platform_device_register(&v2m_pcie_i2c_device);
353         platform_device_register(&v2m_ddc_i2c_device);
354         platform_device_register(&v2m_flash_device);
355         platform_device_register(&v2m_eth_device);
356         platform_device_register(&v2m_usb_device);
357
358         for (i = 0; i < ARRAY_SIZE(v2m_amba_devs); i++)
359                 amba_device_register(v2m_amba_devs[i], &iomem_resource);
360
361         pm_power_off = v2m_power_off;
362         arm_pm_restart = v2m_restart;
363
364         return 0;
365 }
366 arch_initcall(v2m_init);