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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 | ||
0af85dda RK |
25 | #include <plat/sched_clock.h> |
26 | ||
ceade897 RK |
27 | #include <plat/timer-sp.h> |
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 | ||
37 | static 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 | ||
46 | void __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 | ||
52 | ||
cdaf9a2f | 53 | static void __init v2m_timer_init(void) |
ceade897 | 54 | { |
0af85dda RK |
55 | versatile_sched_clock_init(MMIO_P2V(V2M_SYS_24MHZ), 24000000); |
56 | ||
ceade897 RK |
57 | writel(0, MMIO_P2V(V2M_TIMER0) + TIMER_CTRL); |
58 | writel(0, MMIO_P2V(V2M_TIMER1) + TIMER_CTRL); | |
59 | ||
60 | sp804_clocksource_init(MMIO_P2V(V2M_TIMER1)); | |
61 | sp804_clockevents_init(MMIO_P2V(V2M_TIMER0), IRQ_V2M_TIMER0); | |
62 | } | |
63 | ||
64 | struct sys_timer v2m_timer = { | |
65 | .init = v2m_timer_init, | |
66 | }; | |
67 | ||
68 | ||
69 | static DEFINE_SPINLOCK(v2m_cfg_lock); | |
70 | ||
71 | int v2m_cfg_write(u32 devfn, u32 data) | |
72 | { | |
73 | /* Configuration interface broken? */ | |
74 | u32 val; | |
75 | ||
76 | printk("%s: writing %08x to %08x\n", __func__, data, devfn); | |
77 | ||
78 | devfn |= SYS_CFG_START | SYS_CFG_WRITE; | |
79 | ||
80 | spin_lock(&v2m_cfg_lock); | |
81 | val = readl(MMIO_P2V(V2M_SYS_CFGSTAT)); | |
82 | writel(val & ~SYS_CFG_COMPLETE, MMIO_P2V(V2M_SYS_CFGSTAT)); | |
83 | ||
84 | writel(data, MMIO_P2V(V2M_SYS_CFGDATA)); | |
85 | writel(devfn, MMIO_P2V(V2M_SYS_CFGCTRL)); | |
86 | ||
87 | do { | |
88 | val = readl(MMIO_P2V(V2M_SYS_CFGSTAT)); | |
89 | } while (val == 0); | |
90 | spin_unlock(&v2m_cfg_lock); | |
91 | ||
92 | return !!(val & SYS_CFG_ERR); | |
93 | } | |
94 | ||
95 | int v2m_cfg_read(u32 devfn, u32 *data) | |
96 | { | |
97 | u32 val; | |
98 | ||
99 | devfn |= SYS_CFG_START; | |
100 | ||
101 | spin_lock(&v2m_cfg_lock); | |
102 | writel(0, MMIO_P2V(V2M_SYS_CFGSTAT)); | |
103 | writel(devfn, MMIO_P2V(V2M_SYS_CFGCTRL)); | |
104 | ||
105 | mb(); | |
106 | ||
107 | do { | |
108 | cpu_relax(); | |
109 | val = readl(MMIO_P2V(V2M_SYS_CFGSTAT)); | |
110 | } while (val == 0); | |
111 | ||
112 | *data = readl(MMIO_P2V(V2M_SYS_CFGDATA)); | |
113 | spin_unlock(&v2m_cfg_lock); | |
114 | ||
115 | return !!(val & SYS_CFG_ERR); | |
116 | } | |
117 | ||
118 | ||
119 | static struct resource v2m_pcie_i2c_resource = { | |
120 | .start = V2M_SERIAL_BUS_PCI, | |
121 | .end = V2M_SERIAL_BUS_PCI + SZ_4K - 1, | |
122 | .flags = IORESOURCE_MEM, | |
123 | }; | |
124 | ||
125 | static struct platform_device v2m_pcie_i2c_device = { | |
126 | .name = "versatile-i2c", | |
127 | .id = 0, | |
128 | .num_resources = 1, | |
129 | .resource = &v2m_pcie_i2c_resource, | |
130 | }; | |
131 | ||
132 | static struct resource v2m_ddc_i2c_resource = { | |
133 | .start = V2M_SERIAL_BUS_DVI, | |
134 | .end = V2M_SERIAL_BUS_DVI + SZ_4K - 1, | |
135 | .flags = IORESOURCE_MEM, | |
136 | }; | |
137 | ||
138 | static struct platform_device v2m_ddc_i2c_device = { | |
139 | .name = "versatile-i2c", | |
140 | .id = 1, | |
141 | .num_resources = 1, | |
142 | .resource = &v2m_ddc_i2c_resource, | |
143 | }; | |
144 | ||
145 | static struct resource v2m_eth_resources[] = { | |
146 | { | |
147 | .start = V2M_LAN9118, | |
148 | .end = V2M_LAN9118 + SZ_64K - 1, | |
149 | .flags = IORESOURCE_MEM, | |
150 | }, { | |
151 | .start = IRQ_V2M_LAN9118, | |
152 | .end = IRQ_V2M_LAN9118, | |
153 | .flags = IORESOURCE_IRQ, | |
154 | }, | |
155 | }; | |
156 | ||
157 | static struct smsc911x_platform_config v2m_eth_config = { | |
158 | .flags = SMSC911X_USE_32BIT, | |
159 | .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH, | |
160 | .irq_type = SMSC911X_IRQ_TYPE_PUSH_PULL, | |
161 | .phy_interface = PHY_INTERFACE_MODE_MII, | |
162 | }; | |
163 | ||
164 | static struct platform_device v2m_eth_device = { | |
165 | .name = "smsc911x", | |
166 | .id = -1, | |
167 | .resource = v2m_eth_resources, | |
168 | .num_resources = ARRAY_SIZE(v2m_eth_resources), | |
169 | .dev.platform_data = &v2m_eth_config, | |
170 | }; | |
171 | ||
172 | static struct resource v2m_usb_resources[] = { | |
173 | { | |
174 | .start = V2M_ISP1761, | |
175 | .end = V2M_ISP1761 + SZ_128K - 1, | |
176 | .flags = IORESOURCE_MEM, | |
177 | }, { | |
178 | .start = IRQ_V2M_ISP1761, | |
179 | .end = IRQ_V2M_ISP1761, | |
180 | .flags = IORESOURCE_IRQ, | |
181 | }, | |
182 | }; | |
183 | ||
184 | static struct isp1760_platform_data v2m_usb_config = { | |
185 | .is_isp1761 = true, | |
186 | .bus_width_16 = false, | |
187 | .port1_otg = true, | |
188 | .analog_oc = false, | |
189 | .dack_polarity_high = false, | |
190 | .dreq_polarity_high = false, | |
191 | }; | |
192 | ||
193 | static struct platform_device v2m_usb_device = { | |
194 | .name = "isp1760", | |
195 | .id = -1, | |
196 | .resource = v2m_usb_resources, | |
197 | .num_resources = ARRAY_SIZE(v2m_usb_resources), | |
198 | .dev.platform_data = &v2m_usb_config, | |
199 | }; | |
200 | ||
201 | static int v2m_flash_init(void) | |
202 | { | |
203 | writel(0, MMIO_P2V(V2M_SYS_FLASH)); | |
204 | return 0; | |
205 | } | |
206 | ||
207 | static void v2m_flash_exit(void) | |
208 | { | |
209 | writel(0, MMIO_P2V(V2M_SYS_FLASH)); | |
210 | } | |
211 | ||
212 | static void v2m_flash_set_vpp(int on) | |
213 | { | |
214 | writel(on != 0, MMIO_P2V(V2M_SYS_FLASH)); | |
215 | } | |
216 | ||
217 | static struct flash_platform_data v2m_flash_data = { | |
218 | .map_name = "cfi_probe", | |
219 | .width = 4, | |
220 | .init = v2m_flash_init, | |
221 | .exit = v2m_flash_exit, | |
222 | .set_vpp = v2m_flash_set_vpp, | |
223 | }; | |
224 | ||
225 | static struct resource v2m_flash_resources[] = { | |
226 | { | |
227 | .start = V2M_NOR0, | |
228 | .end = V2M_NOR0 + SZ_64M - 1, | |
229 | .flags = IORESOURCE_MEM, | |
230 | }, { | |
231 | .start = V2M_NOR1, | |
232 | .end = V2M_NOR1 + SZ_64M - 1, | |
233 | .flags = IORESOURCE_MEM, | |
234 | }, | |
235 | }; | |
236 | ||
237 | static struct platform_device v2m_flash_device = { | |
238 | .name = "armflash", | |
239 | .id = -1, | |
240 | .resource = v2m_flash_resources, | |
241 | .num_resources = ARRAY_SIZE(v2m_flash_resources), | |
242 | .dev.platform_data = &v2m_flash_data, | |
243 | }; | |
244 | ||
245 | ||
246 | static unsigned int v2m_mmci_status(struct device *dev) | |
247 | { | |
74bc8093 | 248 | return readl(MMIO_P2V(V2M_SYS_MCI)) & (1 << 0); |
ceade897 RK |
249 | } |
250 | ||
251 | static struct mmci_platform_data v2m_mmci_data = { | |
252 | .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34, | |
253 | .status = v2m_mmci_status, | |
254 | }; | |
255 | ||
256 | static AMBA_DEVICE(aaci, "mb:aaci", V2M_AACI, NULL); | |
257 | static AMBA_DEVICE(mmci, "mb:mmci", V2M_MMCI, &v2m_mmci_data); | |
258 | static AMBA_DEVICE(kmi0, "mb:kmi0", V2M_KMI0, NULL); | |
259 | static AMBA_DEVICE(kmi1, "mb:kmi1", V2M_KMI1, NULL); | |
260 | static AMBA_DEVICE(uart0, "mb:uart0", V2M_UART0, NULL); | |
261 | static AMBA_DEVICE(uart1, "mb:uart1", V2M_UART1, NULL); | |
262 | static AMBA_DEVICE(uart2, "mb:uart2", V2M_UART2, NULL); | |
263 | static AMBA_DEVICE(uart3, "mb:uart3", V2M_UART3, NULL); | |
264 | static AMBA_DEVICE(wdt, "mb:wdt", V2M_WDT, NULL); | |
265 | static AMBA_DEVICE(rtc, "mb:rtc", V2M_RTC, NULL); | |
266 | ||
267 | static struct amba_device *v2m_amba_devs[] __initdata = { | |
268 | &aaci_device, | |
269 | &mmci_device, | |
270 | &kmi0_device, | |
271 | &kmi1_device, | |
272 | &uart0_device, | |
273 | &uart1_device, | |
274 | &uart2_device, | |
275 | &uart3_device, | |
276 | &wdt_device, | |
277 | &rtc_device, | |
278 | }; | |
279 | ||
280 | ||
281 | static long v2m_osc_round(struct clk *clk, unsigned long rate) | |
282 | { | |
283 | return rate; | |
284 | } | |
285 | ||
286 | static int v2m_osc1_set(struct clk *clk, unsigned long rate) | |
287 | { | |
288 | return v2m_cfg_write(SYS_CFG_OSC | SYS_CFG_SITE_MB | 1, rate); | |
289 | } | |
290 | ||
291 | static const struct clk_ops osc1_clk_ops = { | |
292 | .round = v2m_osc_round, | |
293 | .set = v2m_osc1_set, | |
294 | }; | |
295 | ||
296 | static struct clk osc1_clk = { | |
297 | .ops = &osc1_clk_ops, | |
298 | .rate = 24000000, | |
299 | }; | |
300 | ||
301 | static struct clk osc2_clk = { | |
302 | .rate = 24000000, | |
303 | }; | |
304 | ||
3126c7bc RK |
305 | static struct clk dummy_apb_pclk; |
306 | ||
ceade897 | 307 | static struct clk_lookup v2m_lookups[] = { |
3126c7bc RK |
308 | { /* AMBA bus clock */ |
309 | .con_id = "apb_pclk", | |
310 | .clk = &dummy_apb_pclk, | |
311 | }, { /* UART0 */ | |
ceade897 RK |
312 | .dev_id = "mb:uart0", |
313 | .clk = &osc2_clk, | |
314 | }, { /* UART1 */ | |
315 | .dev_id = "mb:uart1", | |
316 | .clk = &osc2_clk, | |
317 | }, { /* UART2 */ | |
318 | .dev_id = "mb:uart2", | |
319 | .clk = &osc2_clk, | |
320 | }, { /* UART3 */ | |
321 | .dev_id = "mb:uart3", | |
322 | .clk = &osc2_clk, | |
323 | }, { /* KMI0 */ | |
324 | .dev_id = "mb:kmi0", | |
325 | .clk = &osc2_clk, | |
326 | }, { /* KMI1 */ | |
327 | .dev_id = "mb:kmi1", | |
328 | .clk = &osc2_clk, | |
329 | }, { /* MMC0 */ | |
330 | .dev_id = "mb:mmci", | |
331 | .clk = &osc2_clk, | |
332 | }, { /* CLCD */ | |
333 | .dev_id = "mb:clcd", | |
334 | .clk = &osc1_clk, | |
335 | }, | |
336 | }; | |
337 | ||
338 | static void v2m_power_off(void) | |
339 | { | |
340 | if (v2m_cfg_write(SYS_CFG_SHUTDOWN | SYS_CFG_SITE_MB, 0)) | |
341 | printk(KERN_EMERG "Unable to shutdown\n"); | |
342 | } | |
343 | ||
344 | static void v2m_restart(char str, const char *cmd) | |
345 | { | |
346 | if (v2m_cfg_write(SYS_CFG_REBOOT | SYS_CFG_SITE_MB, 0)) | |
347 | printk(KERN_EMERG "Unable to reboot\n"); | |
348 | } | |
349 | ||
350 | static int __init v2m_init(void) | |
351 | { | |
352 | int i; | |
353 | ||
354 | clkdev_add_table(v2m_lookups, ARRAY_SIZE(v2m_lookups)); | |
355 | ||
356 | platform_device_register(&v2m_pcie_i2c_device); | |
357 | platform_device_register(&v2m_ddc_i2c_device); | |
358 | platform_device_register(&v2m_flash_device); | |
359 | platform_device_register(&v2m_eth_device); | |
360 | platform_device_register(&v2m_usb_device); | |
361 | ||
362 | for (i = 0; i < ARRAY_SIZE(v2m_amba_devs); i++) | |
363 | amba_device_register(v2m_amba_devs[i], &iomem_resource); | |
364 | ||
365 | pm_power_off = v2m_power_off; | |
366 | arm_pm_restart = v2m_restart; | |
367 | ||
368 | return 0; | |
369 | } | |
370 | arch_initcall(v2m_init); |