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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> |
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 __init 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); |
367 |
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