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ceade897 RK |
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 | ||
cdaf9a2f | 51 | static void __init v2m_timer_init(void) |
ceade897 RK |
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 | { | |
74bc8093 | 244 | return readl(MMIO_P2V(V2M_SYS_MCI)) & (1 << 0); |
ceade897 RK |
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 | ||
3126c7bc RK |
301 | static struct clk dummy_apb_pclk; |
302 | ||
ceade897 | 303 | static struct clk_lookup v2m_lookups[] = { |
3126c7bc RK |
304 | { /* AMBA bus clock */ |
305 | .con_id = "apb_pclk", | |
306 | .clk = &dummy_apb_pclk, | |
307 | }, { /* UART0 */ | |
ceade897 RK |
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); |