Commit | Line | Data |
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e7736d47 LB |
1 | /* |
2 | * arch/arm/mach-ep93xx/core.c | |
3 | * Core routines for Cirrus EP93xx chips. | |
4 | * | |
5 | * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org> | |
3c9a071d | 6 | * Copyright (C) 2007 Herbert Valerio Riedel <hvr@gnu.org> |
e7736d47 LB |
7 | * |
8 | * Thanks go to Michael Burian and Ray Lehtiniemi for their key | |
9 | * role in the ep93xx linux community. | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2 of the License, or (at | |
14 | * your option) any later version. | |
15 | */ | |
16 | ||
64d6882d HS |
17 | #define pr_fmt(fmt) "ep93xx " KBUILD_MODNAME ": " fmt |
18 | ||
e7736d47 LB |
19 | #include <linux/kernel.h> |
20 | #include <linux/init.h> | |
583ddafe | 21 | #include <linux/platform_device.h> |
e7736d47 | 22 | #include <linux/interrupt.h> |
63890a0e | 23 | #include <linux/dma-mapping.h> |
e7736d47 | 24 | #include <linux/timex.h> |
6bd4b382 | 25 | #include <linux/irq.h> |
583ddafe HS |
26 | #include <linux/io.h> |
27 | #include <linux/gpio.h> | |
3aa7a9a3 | 28 | #include <linux/leds.h> |
aee85fe8 | 29 | #include <linux/termios.h> |
e7736d47 | 30 | #include <linux/amba/bus.h> |
aee85fe8 | 31 | #include <linux/amba/serial.h> |
16bcf78f | 32 | #include <linux/mtd/physmap.h> |
d52a26a9 HS |
33 | #include <linux/i2c.h> |
34 | #include <linux/i2c-gpio.h> | |
4fec9978 | 35 | #include <linux/spi/spi.h> |
dc28094b | 36 | #include <linux/export.h> |
9e47b8bf | 37 | #include <linux/irqchip/arm-vic.h> |
7b6d864b | 38 | #include <linux/reboot.h> |
e55f7cd2 | 39 | #include <linux/usb/ohci_pdriver.h> |
e7736d47 | 40 | |
a09e64fb | 41 | #include <mach/hardware.h> |
a3b29245 AB |
42 | #include <linux/platform_data/video-ep93xx.h> |
43 | #include <linux/platform_data/keypad-ep93xx.h> | |
44 | #include <linux/platform_data/spi-ep93xx.h> | |
bd5f12a2 | 45 | #include <mach/gpio-ep93xx.h> |
e7736d47 LB |
46 | |
47 | #include <asm/mach/map.h> | |
48 | #include <asm/mach/time.h> | |
e7736d47 | 49 | |
a05baf33 | 50 | #include "soc.h" |
e7736d47 LB |
51 | |
52 | /************************************************************************* | |
53 | * Static I/O mappings that are needed for all EP93xx platforms | |
54 | *************************************************************************/ | |
55 | static struct map_desc ep93xx_io_desc[] __initdata = { | |
56 | { | |
57 | .virtual = EP93XX_AHB_VIRT_BASE, | |
58 | .pfn = __phys_to_pfn(EP93XX_AHB_PHYS_BASE), | |
59 | .length = EP93XX_AHB_SIZE, | |
60 | .type = MT_DEVICE, | |
61 | }, { | |
62 | .virtual = EP93XX_APB_VIRT_BASE, | |
63 | .pfn = __phys_to_pfn(EP93XX_APB_PHYS_BASE), | |
64 | .length = EP93XX_APB_SIZE, | |
65 | .type = MT_DEVICE, | |
66 | }, | |
67 | }; | |
68 | ||
69 | void __init ep93xx_map_io(void) | |
70 | { | |
71 | iotable_init(ep93xx_io_desc, ARRAY_SIZE(ep93xx_io_desc)); | |
72 | } | |
73 | ||
74 | ||
75 | /************************************************************************* | |
76 | * Timer handling for EP93xx | |
77 | ************************************************************************* | |
78 | * The ep93xx has four internal timers. Timers 1, 2 (both 16 bit) and | |
79 | * 3 (32 bit) count down at 508 kHz, are self-reloading, and can generate | |
80 | * an interrupt on underflow. Timer 4 (40 bit) counts down at 983.04 kHz, | |
81 | * is free-running, and can't generate interrupts. | |
82 | * | |
83 | * The 508 kHz timers are ideal for use for the timer interrupt, as the | |
84 | * most common values of HZ divide 508 kHz nicely. We pick one of the 16 | |
85 | * bit timers (timer 1) since we don't need more than 16 bits of reload | |
86 | * value as long as HZ >= 8. | |
87 | * | |
88 | * The higher clock rate of timer 4 makes it a better choice than the | |
89 | * other timers for use in gettimeoffset(), while the fact that it can't | |
90 | * generate interrupts means we don't have to worry about not being able | |
91 | * to use this timer for something else. We also use timer 4 for keeping | |
92 | * track of lost jiffies. | |
93 | */ | |
1587a373 HS |
94 | #define EP93XX_TIMER_REG(x) (EP93XX_TIMER_BASE + (x)) |
95 | #define EP93XX_TIMER1_LOAD EP93XX_TIMER_REG(0x00) | |
96 | #define EP93XX_TIMER1_VALUE EP93XX_TIMER_REG(0x04) | |
97 | #define EP93XX_TIMER1_CONTROL EP93XX_TIMER_REG(0x08) | |
98 | #define EP93XX_TIMER123_CONTROL_ENABLE (1 << 7) | |
99 | #define EP93XX_TIMER123_CONTROL_MODE (1 << 6) | |
100 | #define EP93XX_TIMER123_CONTROL_CLKSEL (1 << 3) | |
101 | #define EP93XX_TIMER1_CLEAR EP93XX_TIMER_REG(0x0c) | |
102 | #define EP93XX_TIMER2_LOAD EP93XX_TIMER_REG(0x20) | |
103 | #define EP93XX_TIMER2_VALUE EP93XX_TIMER_REG(0x24) | |
104 | #define EP93XX_TIMER2_CONTROL EP93XX_TIMER_REG(0x28) | |
105 | #define EP93XX_TIMER2_CLEAR EP93XX_TIMER_REG(0x2c) | |
106 | #define EP93XX_TIMER4_VALUE_LOW EP93XX_TIMER_REG(0x60) | |
107 | #define EP93XX_TIMER4_VALUE_HIGH EP93XX_TIMER_REG(0x64) | |
108 | #define EP93XX_TIMER4_VALUE_HIGH_ENABLE (1 << 8) | |
109 | #define EP93XX_TIMER3_LOAD EP93XX_TIMER_REG(0x80) | |
110 | #define EP93XX_TIMER3_VALUE EP93XX_TIMER_REG(0x84) | |
111 | #define EP93XX_TIMER3_CONTROL EP93XX_TIMER_REG(0x88) | |
112 | #define EP93XX_TIMER3_CLEAR EP93XX_TIMER_REG(0x8c) | |
113 | ||
114 | #define EP93XX_TIMER123_CLOCK 508469 | |
115 | #define EP93XX_TIMER4_CLOCK 983040 | |
116 | ||
117 | #define TIMER1_RELOAD ((EP93XX_TIMER123_CLOCK / HZ) - 1) | |
af1057ab | 118 | #define TIMER4_TICKS_PER_JIFFY DIV_ROUND_CLOSEST(CLOCK_TICK_RATE, HZ) |
e7736d47 | 119 | |
1587a373 HS |
120 | static unsigned int last_jiffy_time; |
121 | ||
d5565f76 | 122 | static irqreturn_t ep93xx_timer_interrupt(int irq, void *dev_id) |
e7736d47 | 123 | { |
1587a373 | 124 | /* Writing any value clears the timer interrupt */ |
e7736d47 | 125 | __raw_writel(1, EP93XX_TIMER1_CLEAR); |
1587a373 HS |
126 | |
127 | /* Recover lost jiffies */ | |
f869afab LB |
128 | while ((signed long) |
129 | (__raw_readl(EP93XX_TIMER4_VALUE_LOW) - last_jiffy_time) | |
e7736d47 LB |
130 | >= TIMER4_TICKS_PER_JIFFY) { |
131 | last_jiffy_time += TIMER4_TICKS_PER_JIFFY; | |
0cd61b68 | 132 | timer_tick(); |
e7736d47 LB |
133 | } |
134 | ||
e7736d47 LB |
135 | return IRQ_HANDLED; |
136 | } | |
137 | ||
138 | static struct irqaction ep93xx_timer_irq = { | |
139 | .name = "ep93xx timer", | |
b30fabad | 140 | .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL, |
e7736d47 LB |
141 | .handler = ep93xx_timer_interrupt, |
142 | }; | |
143 | ||
23c197b7 SW |
144 | static u32 ep93xx_gettimeoffset(void) |
145 | { | |
146 | int offset; | |
147 | ||
148 | offset = __raw_readl(EP93XX_TIMER4_VALUE_LOW) - last_jiffy_time; | |
149 | ||
150 | /* | |
151 | * Timer 4 is based on a 983.04 kHz reference clock, | |
152 | * so dividing by 983040 gives the fraction of a second, | |
153 | * so dividing by 0.983040 converts to uS. | |
154 | * Refactor the calculation to avoid overflow. | |
155 | * Finally, multiply by 1000 to give nS. | |
156 | */ | |
157 | return (offset + (53 * offset / 3072)) * 1000; | |
158 | } | |
159 | ||
6bb27d73 | 160 | void __init ep93xx_timer_init(void) |
e7736d47 | 161 | { |
1587a373 HS |
162 | u32 tmode = EP93XX_TIMER123_CONTROL_MODE | |
163 | EP93XX_TIMER123_CONTROL_CLKSEL; | |
164 | ||
23c197b7 SW |
165 | arch_gettimeoffset = ep93xx_gettimeoffset; |
166 | ||
e7736d47 | 167 | /* Enable periodic HZ timer. */ |
1587a373 HS |
168 | __raw_writel(tmode, EP93XX_TIMER1_CONTROL); |
169 | __raw_writel(TIMER1_RELOAD, EP93XX_TIMER1_LOAD); | |
170 | __raw_writel(tmode | EP93XX_TIMER123_CONTROL_ENABLE, | |
171 | EP93XX_TIMER1_CONTROL); | |
e7736d47 LB |
172 | |
173 | /* Enable lost jiffy timer. */ | |
1587a373 HS |
174 | __raw_writel(EP93XX_TIMER4_VALUE_HIGH_ENABLE, |
175 | EP93XX_TIMER4_VALUE_HIGH); | |
e7736d47 LB |
176 | |
177 | setup_irq(IRQ_EP93XX_TIMER1, &ep93xx_timer_irq); | |
178 | } | |
179 | ||
e7736d47 LB |
180 | |
181 | /************************************************************************* | |
182 | * EP93xx IRQ handling | |
183 | *************************************************************************/ | |
184 | void __init ep93xx_init_irq(void) | |
185 | { | |
5396730b HS |
186 | vic_init(EP93XX_VIC1_BASE, 0, EP93XX_VIC1_VALID_IRQ_MASK, 0); |
187 | vic_init(EP93XX_VIC2_BASE, 32, EP93XX_VIC2_VALID_IRQ_MASK, 0); | |
e7736d47 LB |
188 | } |
189 | ||
190 | ||
02239f0a HS |
191 | /************************************************************************* |
192 | * EP93xx System Controller Software Locked register handling | |
193 | *************************************************************************/ | |
194 | ||
195 | /* | |
196 | * syscon_swlock prevents anything else from writing to the syscon | |
197 | * block while a software locked register is being written. | |
198 | */ | |
199 | static DEFINE_SPINLOCK(syscon_swlock); | |
200 | ||
fbeeea53 | 201 | void ep93xx_syscon_swlocked_write(unsigned int val, void __iomem *reg) |
02239f0a HS |
202 | { |
203 | unsigned long flags; | |
204 | ||
205 | spin_lock_irqsave(&syscon_swlock, flags); | |
206 | ||
207 | __raw_writel(0xaa, EP93XX_SYSCON_SWLOCK); | |
208 | __raw_writel(val, reg); | |
209 | ||
210 | spin_unlock_irqrestore(&syscon_swlock, flags); | |
211 | } | |
02239f0a HS |
212 | |
213 | void ep93xx_devcfg_set_clear(unsigned int set_bits, unsigned int clear_bits) | |
214 | { | |
215 | unsigned long flags; | |
216 | unsigned int val; | |
217 | ||
218 | spin_lock_irqsave(&syscon_swlock, flags); | |
219 | ||
220 | val = __raw_readl(EP93XX_SYSCON_DEVCFG); | |
02239f0a | 221 | val &= ~clear_bits; |
a0fb007b | 222 | val |= set_bits; |
02239f0a HS |
223 | __raw_writel(0xaa, EP93XX_SYSCON_SWLOCK); |
224 | __raw_writel(val, EP93XX_SYSCON_DEVCFG); | |
225 | ||
226 | spin_unlock_irqrestore(&syscon_swlock, flags); | |
227 | } | |
02239f0a | 228 | |
99e6a23a MW |
229 | /** |
230 | * ep93xx_chip_revision() - returns the EP93xx chip revision | |
231 | * | |
232 | * See <mach/platform.h> for more information. | |
233 | */ | |
234 | unsigned int ep93xx_chip_revision(void) | |
235 | { | |
236 | unsigned int v; | |
237 | ||
238 | v = __raw_readl(EP93XX_SYSCON_SYSCFG); | |
239 | v &= EP93XX_SYSCON_SYSCFG_REV_MASK; | |
240 | v >>= EP93XX_SYSCON_SYSCFG_REV_SHIFT; | |
241 | return v; | |
242 | } | |
02239f0a | 243 | |
1e4c8842 HS |
244 | /************************************************************************* |
245 | * EP93xx GPIO | |
246 | *************************************************************************/ | |
247 | static struct resource ep93xx_gpio_resource[] = { | |
ede55aaa | 248 | DEFINE_RES_MEM(EP93XX_GPIO_PHYS_BASE, 0xcc), |
1e4c8842 HS |
249 | }; |
250 | ||
251 | static struct platform_device ep93xx_gpio_device = { | |
252 | .name = "gpio-ep93xx", | |
253 | .id = -1, | |
254 | .num_resources = ARRAY_SIZE(ep93xx_gpio_resource), | |
255 | .resource = ep93xx_gpio_resource, | |
256 | }; | |
257 | ||
e7736d47 LB |
258 | /************************************************************************* |
259 | * EP93xx peripheral handling | |
260 | *************************************************************************/ | |
aee85fe8 LB |
261 | #define EP93XX_UART_MCR_OFFSET (0x0100) |
262 | ||
263 | static void ep93xx_uart_set_mctrl(struct amba_device *dev, | |
264 | void __iomem *base, unsigned int mctrl) | |
265 | { | |
266 | unsigned int mcr; | |
267 | ||
268 | mcr = 0; | |
186dcaa4 | 269 | if (mctrl & TIOCM_RTS) |
aee85fe8 | 270 | mcr |= 2; |
186dcaa4 | 271 | if (mctrl & TIOCM_DTR) |
aee85fe8 LB |
272 | mcr |= 1; |
273 | ||
274 | __raw_writel(mcr, base + EP93XX_UART_MCR_OFFSET); | |
275 | } | |
276 | ||
277 | static struct amba_pl010_data ep93xx_uart_data = { | |
278 | .set_mctrl = ep93xx_uart_set_mctrl, | |
279 | }; | |
280 | ||
0b26051b RK |
281 | static AMBA_APB_DEVICE(uart1, "apb:uart1", 0x00041010, EP93XX_UART1_PHYS_BASE, |
282 | { IRQ_EP93XX_UART1 }, &ep93xx_uart_data); | |
aee85fe8 | 283 | |
0b26051b | 284 | static AMBA_APB_DEVICE(uart2, "apb:uart2", 0x00041010, EP93XX_UART2_PHYS_BASE, |
cc3874fe | 285 | { IRQ_EP93XX_UART2 }, NULL); |
aee85fe8 | 286 | |
0b26051b RK |
287 | static AMBA_APB_DEVICE(uart3, "apb:uart3", 0x00041010, EP93XX_UART3_PHYS_BASE, |
288 | { IRQ_EP93XX_UART3 }, &ep93xx_uart_data); | |
41658132 | 289 | |
38f7b009 | 290 | static struct resource ep93xx_rtc_resource[] = { |
ede55aaa | 291 | DEFINE_RES_MEM(EP93XX_RTC_PHYS_BASE, 0x10c), |
38f7b009 HS |
292 | }; |
293 | ||
41658132 | 294 | static struct platform_device ep93xx_rtc_device = { |
38f7b009 HS |
295 | .name = "ep93xx-rtc", |
296 | .id = -1, | |
297 | .num_resources = ARRAY_SIZE(ep93xx_rtc_resource), | |
298 | .resource = ep93xx_rtc_resource, | |
41658132 LB |
299 | }; |
300 | ||
e55f7cd2 HS |
301 | /************************************************************************* |
302 | * EP93xx OHCI USB Host | |
303 | *************************************************************************/ | |
304 | ||
305 | static struct clk *ep93xx_ohci_host_clock; | |
306 | ||
307 | static int ep93xx_ohci_power_on(struct platform_device *pdev) | |
308 | { | |
309 | if (!ep93xx_ohci_host_clock) { | |
310 | ep93xx_ohci_host_clock = devm_clk_get(&pdev->dev, NULL); | |
311 | if (IS_ERR(ep93xx_ohci_host_clock)) | |
312 | return PTR_ERR(ep93xx_ohci_host_clock); | |
313 | } | |
314 | ||
315 | return clk_enable(ep93xx_ohci_host_clock); | |
316 | } | |
317 | ||
318 | static void ep93xx_ohci_power_off(struct platform_device *pdev) | |
319 | { | |
320 | clk_disable(ep93xx_ohci_host_clock); | |
321 | } | |
322 | ||
323 | static struct usb_ohci_pdata ep93xx_ohci_pdata = { | |
324 | .power_on = ep93xx_ohci_power_on, | |
325 | .power_off = ep93xx_ohci_power_off, | |
326 | .power_suspend = ep93xx_ohci_power_off, | |
327 | }; | |
41658132 | 328 | |
1f64eb37 | 329 | static struct resource ep93xx_ohci_resources[] = { |
ede55aaa HS |
330 | DEFINE_RES_MEM(EP93XX_USB_PHYS_BASE, 0x1000), |
331 | DEFINE_RES_IRQ(IRQ_EP93XX_USB), | |
1f64eb37 LB |
332 | }; |
333 | ||
e55f7cd2 | 334 | static u64 ep93xx_ohci_dma_mask = DMA_BIT_MASK(32); |
63890a0e | 335 | |
1f64eb37 | 336 | static struct platform_device ep93xx_ohci_device = { |
e55f7cd2 | 337 | .name = "ohci-platform", |
1f64eb37 | 338 | .id = -1, |
e55f7cd2 HS |
339 | .num_resources = ARRAY_SIZE(ep93xx_ohci_resources), |
340 | .resource = ep93xx_ohci_resources, | |
1f64eb37 | 341 | .dev = { |
e55f7cd2 | 342 | .dma_mask = &ep93xx_ohci_dma_mask, |
63890a0e | 343 | .coherent_dma_mask = DMA_BIT_MASK(32), |
e55f7cd2 | 344 | .platform_data = &ep93xx_ohci_pdata, |
1f64eb37 | 345 | }, |
1f64eb37 LB |
346 | }; |
347 | ||
16bcf78f HS |
348 | /************************************************************************* |
349 | * EP93xx physmap'ed flash | |
350 | *************************************************************************/ | |
351 | static struct physmap_flash_data ep93xx_flash_data; | |
352 | ||
353 | static struct resource ep93xx_flash_resource = { | |
354 | .flags = IORESOURCE_MEM, | |
355 | }; | |
356 | ||
357 | static struct platform_device ep93xx_flash = { | |
358 | .name = "physmap-flash", | |
359 | .id = 0, | |
360 | .dev = { | |
361 | .platform_data = &ep93xx_flash_data, | |
362 | }, | |
363 | .num_resources = 1, | |
364 | .resource = &ep93xx_flash_resource, | |
365 | }; | |
366 | ||
367 | /** | |
368 | * ep93xx_register_flash() - Register the external flash device. | |
369 | * @width: bank width in octets | |
370 | * @start: resource start address | |
371 | * @size: resource size | |
372 | */ | |
373 | void __init ep93xx_register_flash(unsigned int width, | |
374 | resource_size_t start, resource_size_t size) | |
375 | { | |
376 | ep93xx_flash_data.width = width; | |
377 | ||
378 | ep93xx_flash_resource.start = start; | |
379 | ep93xx_flash_resource.end = start + size - 1; | |
380 | ||
381 | platform_device_register(&ep93xx_flash); | |
382 | } | |
383 | ||
384 | ||
b370e082 HS |
385 | /************************************************************************* |
386 | * EP93xx ethernet peripheral handling | |
387 | *************************************************************************/ | |
a0a08fdc HS |
388 | static struct ep93xx_eth_data ep93xx_eth_data; |
389 | ||
390 | static struct resource ep93xx_eth_resource[] = { | |
ede55aaa | 391 | DEFINE_RES_MEM(EP93XX_ETHERNET_PHYS_BASE, 0x10000), |
011b2e84 | 392 | DEFINE_RES_IRQ(IRQ_EP93XX_ETHERNET), |
a0a08fdc HS |
393 | }; |
394 | ||
fa70cf47 MW |
395 | static u64 ep93xx_eth_dma_mask = DMA_BIT_MASK(32); |
396 | ||
a0a08fdc HS |
397 | static struct platform_device ep93xx_eth_device = { |
398 | .name = "ep93xx-eth", | |
399 | .id = -1, | |
400 | .dev = { | |
fa70cf47 MW |
401 | .platform_data = &ep93xx_eth_data, |
402 | .coherent_dma_mask = DMA_BIT_MASK(32), | |
403 | .dma_mask = &ep93xx_eth_dma_mask, | |
a0a08fdc HS |
404 | }, |
405 | .num_resources = ARRAY_SIZE(ep93xx_eth_resource), | |
406 | .resource = ep93xx_eth_resource, | |
407 | }; | |
408 | ||
b370e082 HS |
409 | /** |
410 | * ep93xx_register_eth - Register the built-in ethernet platform device. | |
411 | * @data: platform specific ethernet configuration (__initdata) | |
412 | * @copy_addr: flag indicating that the MAC address should be copied | |
413 | * from the IndAd registers (as programmed by the bootloader) | |
414 | */ | |
a0a08fdc HS |
415 | void __init ep93xx_register_eth(struct ep93xx_eth_data *data, int copy_addr) |
416 | { | |
5b1c3c85 HS |
417 | if (copy_addr) |
418 | memcpy_fromio(data->dev_addr, EP93XX_ETHERNET_BASE + 0x50, 6); | |
a0a08fdc HS |
419 | |
420 | ep93xx_eth_data = *data; | |
421 | platform_device_register(&ep93xx_eth_device); | |
422 | } | |
423 | ||
6531a991 HS |
424 | |
425 | /************************************************************************* | |
426 | * EP93xx i2c peripheral handling | |
427 | *************************************************************************/ | |
428 | static struct i2c_gpio_platform_data ep93xx_i2c_data; | |
d52a26a9 HS |
429 | |
430 | static struct platform_device ep93xx_i2c_device = { | |
b370e082 HS |
431 | .name = "i2c-gpio", |
432 | .id = 0, | |
433 | .dev = { | |
434 | .platform_data = &ep93xx_i2c_data, | |
435 | }, | |
d52a26a9 HS |
436 | }; |
437 | ||
b370e082 HS |
438 | /** |
439 | * ep93xx_register_i2c - Register the i2c platform device. | |
440 | * @data: platform specific i2c-gpio configuration (__initdata) | |
441 | * @devices: platform specific i2c bus device information (__initdata) | |
442 | * @num: the number of devices on the i2c bus | |
443 | */ | |
6531a991 HS |
444 | void __init ep93xx_register_i2c(struct i2c_gpio_platform_data *data, |
445 | struct i2c_board_info *devices, int num) | |
d52a26a9 | 446 | { |
6531a991 HS |
447 | /* |
448 | * Set the EEPROM interface pin drive type control. | |
449 | * Defines the driver type for the EECLK and EEDAT pins as either | |
450 | * open drain, which will require an external pull-up, or a normal | |
451 | * CMOS driver. | |
452 | */ | |
453 | if (data->sda_is_open_drain && data->sda_pin != EP93XX_GPIO_LINE_EEDAT) | |
64d6882d | 454 | pr_warning("sda != EEDAT, open drain has no effect\n"); |
6531a991 | 455 | if (data->scl_is_open_drain && data->scl_pin != EP93XX_GPIO_LINE_EECLK) |
64d6882d | 456 | pr_warning("scl != EECLK, open drain has no effect\n"); |
6531a991 HS |
457 | |
458 | __raw_writel((data->sda_is_open_drain << 1) | | |
459 | (data->scl_is_open_drain << 0), | |
460 | EP93XX_GPIO_EEDRIVE); | |
461 | ||
462 | ep93xx_i2c_data = *data; | |
d52a26a9 HS |
463 | i2c_register_board_info(0, devices, num); |
464 | platform_device_register(&ep93xx_i2c_device); | |
465 | } | |
466 | ||
4fec9978 MW |
467 | /************************************************************************* |
468 | * EP93xx SPI peripheral handling | |
469 | *************************************************************************/ | |
470 | static struct ep93xx_spi_info ep93xx_spi_master_data; | |
471 | ||
472 | static struct resource ep93xx_spi_resources[] = { | |
ede55aaa HS |
473 | DEFINE_RES_MEM(EP93XX_SPI_PHYS_BASE, 0x18), |
474 | DEFINE_RES_IRQ(IRQ_EP93XX_SSP), | |
4fec9978 MW |
475 | }; |
476 | ||
626a96db MW |
477 | static u64 ep93xx_spi_dma_mask = DMA_BIT_MASK(32); |
478 | ||
4fec9978 MW |
479 | static struct platform_device ep93xx_spi_device = { |
480 | .name = "ep93xx-spi", | |
481 | .id = 0, | |
482 | .dev = { | |
626a96db MW |
483 | .platform_data = &ep93xx_spi_master_data, |
484 | .coherent_dma_mask = DMA_BIT_MASK(32), | |
485 | .dma_mask = &ep93xx_spi_dma_mask, | |
4fec9978 MW |
486 | }, |
487 | .num_resources = ARRAY_SIZE(ep93xx_spi_resources), | |
488 | .resource = ep93xx_spi_resources, | |
489 | }; | |
490 | ||
491 | /** | |
492 | * ep93xx_register_spi() - registers spi platform device | |
493 | * @info: ep93xx board specific spi master info (__initdata) | |
494 | * @devices: SPI devices to register (__initdata) | |
495 | * @num: number of SPI devices to register | |
496 | * | |
497 | * This function registers platform device for the EP93xx SPI controller and | |
498 | * also makes sure that SPI pins are muxed so that I2S is not using those pins. | |
499 | */ | |
500 | void __init ep93xx_register_spi(struct ep93xx_spi_info *info, | |
501 | struct spi_board_info *devices, int num) | |
502 | { | |
503 | /* | |
504 | * When SPI is used, we need to make sure that I2S is muxed off from | |
505 | * SPI pins. | |
506 | */ | |
507 | ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_I2SONSSP); | |
508 | ||
509 | ep93xx_spi_master_data = *info; | |
510 | spi_register_board_info(devices, num); | |
511 | platform_device_register(&ep93xx_spi_device); | |
512 | } | |
3aa7a9a3 HS |
513 | |
514 | /************************************************************************* | |
515 | * EP93xx LEDs | |
516 | *************************************************************************/ | |
a1eacd79 | 517 | static const struct gpio_led ep93xx_led_pins[] __initconst = { |
3aa7a9a3 | 518 | { |
b370e082 HS |
519 | .name = "platform:grled", |
520 | .gpio = EP93XX_GPIO_LINE_GRLED, | |
3aa7a9a3 | 521 | }, { |
b370e082 HS |
522 | .name = "platform:rdled", |
523 | .gpio = EP93XX_GPIO_LINE_RDLED, | |
3aa7a9a3 HS |
524 | }, |
525 | }; | |
526 | ||
a1eacd79 | 527 | static const struct gpio_led_platform_data ep93xx_led_data __initconst = { |
3aa7a9a3 HS |
528 | .num_leds = ARRAY_SIZE(ep93xx_led_pins), |
529 | .leds = ep93xx_led_pins, | |
530 | }; | |
531 | ||
ef12379f HS |
532 | /************************************************************************* |
533 | * EP93xx pwm peripheral handling | |
534 | *************************************************************************/ | |
535 | static struct resource ep93xx_pwm0_resource[] = { | |
ede55aaa | 536 | DEFINE_RES_MEM(EP93XX_PWM_PHYS_BASE, 0x10), |
ef12379f HS |
537 | }; |
538 | ||
539 | static struct platform_device ep93xx_pwm0_device = { | |
540 | .name = "ep93xx-pwm", | |
541 | .id = 0, | |
542 | .num_resources = ARRAY_SIZE(ep93xx_pwm0_resource), | |
543 | .resource = ep93xx_pwm0_resource, | |
544 | }; | |
545 | ||
546 | static struct resource ep93xx_pwm1_resource[] = { | |
ede55aaa | 547 | DEFINE_RES_MEM(EP93XX_PWM_PHYS_BASE + 0x20, 0x10), |
ef12379f HS |
548 | }; |
549 | ||
550 | static struct platform_device ep93xx_pwm1_device = { | |
551 | .name = "ep93xx-pwm", | |
552 | .id = 1, | |
553 | .num_resources = ARRAY_SIZE(ep93xx_pwm1_resource), | |
554 | .resource = ep93xx_pwm1_resource, | |
555 | }; | |
556 | ||
557 | void __init ep93xx_register_pwm(int pwm0, int pwm1) | |
558 | { | |
559 | if (pwm0) | |
560 | platform_device_register(&ep93xx_pwm0_device); | |
561 | ||
562 | /* NOTE: EP9307 does not have PWMOUT1 (pin EGPIO14) */ | |
563 | if (pwm1) | |
564 | platform_device_register(&ep93xx_pwm1_device); | |
565 | } | |
566 | ||
567 | int ep93xx_pwm_acquire_gpio(struct platform_device *pdev) | |
568 | { | |
569 | int err; | |
570 | ||
571 | if (pdev->id == 0) { | |
572 | err = 0; | |
573 | } else if (pdev->id == 1) { | |
574 | err = gpio_request(EP93XX_GPIO_LINE_EGPIO14, | |
575 | dev_name(&pdev->dev)); | |
576 | if (err) | |
577 | return err; | |
578 | err = gpio_direction_output(EP93XX_GPIO_LINE_EGPIO14, 0); | |
579 | if (err) | |
580 | goto fail; | |
581 | ||
582 | /* PWM 1 output on EGPIO[14] */ | |
583 | ep93xx_devcfg_set_bits(EP93XX_SYSCON_DEVCFG_PONG); | |
584 | } else { | |
585 | err = -ENODEV; | |
586 | } | |
587 | ||
588 | return err; | |
589 | ||
590 | fail: | |
591 | gpio_free(EP93XX_GPIO_LINE_EGPIO14); | |
592 | return err; | |
593 | } | |
594 | EXPORT_SYMBOL(ep93xx_pwm_acquire_gpio); | |
595 | ||
596 | void ep93xx_pwm_release_gpio(struct platform_device *pdev) | |
597 | { | |
598 | if (pdev->id == 1) { | |
599 | gpio_direction_input(EP93XX_GPIO_LINE_EGPIO14); | |
600 | gpio_free(EP93XX_GPIO_LINE_EGPIO14); | |
601 | ||
602 | /* EGPIO[14] used for GPIO */ | |
603 | ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_PONG); | |
604 | } | |
605 | } | |
606 | EXPORT_SYMBOL(ep93xx_pwm_release_gpio); | |
607 | ||
608 | ||
c6012189 RM |
609 | /************************************************************************* |
610 | * EP93xx video peripheral handling | |
611 | *************************************************************************/ | |
612 | static struct ep93xxfb_mach_info ep93xxfb_data; | |
613 | ||
614 | static struct resource ep93xx_fb_resource[] = { | |
ede55aaa | 615 | DEFINE_RES_MEM(EP93XX_RASTER_PHYS_BASE, 0x800), |
c6012189 RM |
616 | }; |
617 | ||
618 | static struct platform_device ep93xx_fb_device = { | |
619 | .name = "ep93xx-fb", | |
620 | .id = -1, | |
621 | .dev = { | |
b370e082 | 622 | .platform_data = &ep93xxfb_data, |
c6012189 RM |
623 | .coherent_dma_mask = DMA_BIT_MASK(32), |
624 | .dma_mask = &ep93xx_fb_device.dev.coherent_dma_mask, | |
625 | }, | |
626 | .num_resources = ARRAY_SIZE(ep93xx_fb_resource), | |
627 | .resource = ep93xx_fb_resource, | |
628 | }; | |
629 | ||
0fd19580 RM |
630 | /* The backlight use a single register in the framebuffer's register space */ |
631 | #define EP93XX_RASTER_REG_BRIGHTNESS 0x20 | |
632 | ||
633 | static struct resource ep93xx_bl_resources[] = { | |
634 | DEFINE_RES_MEM(EP93XX_RASTER_PHYS_BASE + | |
635 | EP93XX_RASTER_REG_BRIGHTNESS, 0x04), | |
636 | }; | |
637 | ||
6ea4b741 HS |
638 | static struct platform_device ep93xx_bl_device = { |
639 | .name = "ep93xx-bl", | |
640 | .id = -1, | |
0fd19580 RM |
641 | .num_resources = ARRAY_SIZE(ep93xx_bl_resources), |
642 | .resource = ep93xx_bl_resources, | |
6ea4b741 HS |
643 | }; |
644 | ||
b370e082 HS |
645 | /** |
646 | * ep93xx_register_fb - Register the framebuffer platform device. | |
647 | * @data: platform specific framebuffer configuration (__initdata) | |
648 | */ | |
c6012189 RM |
649 | void __init ep93xx_register_fb(struct ep93xxfb_mach_info *data) |
650 | { | |
651 | ep93xxfb_data = *data; | |
652 | platform_device_register(&ep93xx_fb_device); | |
6ea4b741 | 653 | platform_device_register(&ep93xx_bl_device); |
c6012189 RM |
654 | } |
655 | ||
12f56c68 HS |
656 | |
657 | /************************************************************************* | |
658 | * EP93xx matrix keypad peripheral handling | |
659 | *************************************************************************/ | |
b370e082 HS |
660 | static struct ep93xx_keypad_platform_data ep93xx_keypad_data; |
661 | ||
12f56c68 | 662 | static struct resource ep93xx_keypad_resource[] = { |
ede55aaa HS |
663 | DEFINE_RES_MEM(EP93XX_KEY_MATRIX_PHYS_BASE, 0x0c), |
664 | DEFINE_RES_IRQ(IRQ_EP93XX_KEY), | |
12f56c68 HS |
665 | }; |
666 | ||
667 | static struct platform_device ep93xx_keypad_device = { | |
b370e082 HS |
668 | .name = "ep93xx-keypad", |
669 | .id = -1, | |
670 | .dev = { | |
671 | .platform_data = &ep93xx_keypad_data, | |
672 | }, | |
673 | .num_resources = ARRAY_SIZE(ep93xx_keypad_resource), | |
674 | .resource = ep93xx_keypad_resource, | |
12f56c68 HS |
675 | }; |
676 | ||
b370e082 HS |
677 | /** |
678 | * ep93xx_register_keypad - Register the keypad platform device. | |
679 | * @data: platform specific keypad configuration (__initdata) | |
680 | */ | |
12f56c68 HS |
681 | void __init ep93xx_register_keypad(struct ep93xx_keypad_platform_data *data) |
682 | { | |
b370e082 | 683 | ep93xx_keypad_data = *data; |
12f56c68 HS |
684 | platform_device_register(&ep93xx_keypad_device); |
685 | } | |
686 | ||
687 | int ep93xx_keypad_acquire_gpio(struct platform_device *pdev) | |
688 | { | |
689 | int err; | |
690 | int i; | |
691 | ||
692 | for (i = 0; i < 8; i++) { | |
693 | err = gpio_request(EP93XX_GPIO_LINE_C(i), dev_name(&pdev->dev)); | |
694 | if (err) | |
695 | goto fail_gpio_c; | |
696 | err = gpio_request(EP93XX_GPIO_LINE_D(i), dev_name(&pdev->dev)); | |
697 | if (err) | |
698 | goto fail_gpio_d; | |
699 | } | |
700 | ||
701 | /* Enable the keypad controller; GPIO ports C and D used for keypad */ | |
702 | ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_KEYS | | |
703 | EP93XX_SYSCON_DEVCFG_GONK); | |
704 | ||
705 | return 0; | |
706 | ||
707 | fail_gpio_d: | |
708 | gpio_free(EP93XX_GPIO_LINE_C(i)); | |
709 | fail_gpio_c: | |
5528a846 | 710 | for (--i; i >= 0; --i) { |
12f56c68 HS |
711 | gpio_free(EP93XX_GPIO_LINE_C(i)); |
712 | gpio_free(EP93XX_GPIO_LINE_D(i)); | |
713 | } | |
714 | return err; | |
715 | } | |
716 | EXPORT_SYMBOL(ep93xx_keypad_acquire_gpio); | |
717 | ||
718 | void ep93xx_keypad_release_gpio(struct platform_device *pdev) | |
719 | { | |
720 | int i; | |
721 | ||
722 | for (i = 0; i < 8; i++) { | |
723 | gpio_free(EP93XX_GPIO_LINE_C(i)); | |
724 | gpio_free(EP93XX_GPIO_LINE_D(i)); | |
725 | } | |
726 | ||
727 | /* Disable the keypad controller; GPIO ports C and D used for GPIO */ | |
728 | ep93xx_devcfg_set_bits(EP93XX_SYSCON_DEVCFG_KEYS | | |
729 | EP93XX_SYSCON_DEVCFG_GONK); | |
730 | } | |
731 | EXPORT_SYMBOL(ep93xx_keypad_release_gpio); | |
732 | ||
ed67ea82 RM |
733 | /************************************************************************* |
734 | * EP93xx I2S audio peripheral handling | |
735 | *************************************************************************/ | |
736 | static struct resource ep93xx_i2s_resource[] = { | |
ede55aaa | 737 | DEFINE_RES_MEM(EP93XX_I2S_PHYS_BASE, 0x100), |
ed67ea82 RM |
738 | }; |
739 | ||
740 | static struct platform_device ep93xx_i2s_device = { | |
741 | .name = "ep93xx-i2s", | |
742 | .id = -1, | |
743 | .num_resources = ARRAY_SIZE(ep93xx_i2s_resource), | |
744 | .resource = ep93xx_i2s_resource, | |
745 | }; | |
746 | ||
f0fba2ad LG |
747 | static struct platform_device ep93xx_pcm_device = { |
748 | .name = "ep93xx-pcm-audio", | |
749 | .id = -1, | |
750 | }; | |
751 | ||
ed67ea82 RM |
752 | void __init ep93xx_register_i2s(void) |
753 | { | |
754 | platform_device_register(&ep93xx_i2s_device); | |
f0fba2ad | 755 | platform_device_register(&ep93xx_pcm_device); |
ed67ea82 RM |
756 | } |
757 | ||
758 | #define EP93XX_SYSCON_DEVCFG_I2S_MASK (EP93XX_SYSCON_DEVCFG_I2SONSSP | \ | |
759 | EP93XX_SYSCON_DEVCFG_I2SONAC97) | |
760 | ||
761 | #define EP93XX_I2SCLKDIV_MASK (EP93XX_SYSCON_I2SCLKDIV_ORIDE | \ | |
762 | EP93XX_SYSCON_I2SCLKDIV_SPOL) | |
763 | ||
f15855bf | 764 | int ep93xx_i2s_acquire(void) |
ed67ea82 RM |
765 | { |
766 | unsigned val; | |
767 | ||
f15855bf RM |
768 | ep93xx_devcfg_set_clear(EP93XX_SYSCON_DEVCFG_I2SONAC97, |
769 | EP93XX_SYSCON_DEVCFG_I2S_MASK); | |
ed67ea82 RM |
770 | |
771 | /* | |
772 | * This is potentially racy with the clock api for i2s_mclk, sclk and | |
773 | * lrclk. Since the i2s driver is the only user of those clocks we | |
774 | * rely on it to prevent parallel use of this function and the | |
775 | * clock api for the i2s clocks. | |
776 | */ | |
777 | val = __raw_readl(EP93XX_SYSCON_I2SCLKDIV); | |
778 | val &= ~EP93XX_I2SCLKDIV_MASK; | |
f15855bf | 779 | val |= EP93XX_SYSCON_I2SCLKDIV_ORIDE | EP93XX_SYSCON_I2SCLKDIV_SPOL; |
ed67ea82 RM |
780 | ep93xx_syscon_swlocked_write(val, EP93XX_SYSCON_I2SCLKDIV); |
781 | ||
782 | return 0; | |
783 | } | |
784 | EXPORT_SYMBOL(ep93xx_i2s_acquire); | |
785 | ||
786 | void ep93xx_i2s_release(void) | |
787 | { | |
788 | ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_I2S_MASK); | |
789 | } | |
790 | EXPORT_SYMBOL(ep93xx_i2s_release); | |
12f56c68 | 791 | |
534bc7fa MW |
792 | /************************************************************************* |
793 | * EP93xx AC97 audio peripheral handling | |
794 | *************************************************************************/ | |
795 | static struct resource ep93xx_ac97_resources[] = { | |
ede55aaa HS |
796 | DEFINE_RES_MEM(EP93XX_AAC_PHYS_BASE, 0xac), |
797 | DEFINE_RES_IRQ(IRQ_EP93XX_AACINTR), | |
534bc7fa MW |
798 | }; |
799 | ||
800 | static struct platform_device ep93xx_ac97_device = { | |
801 | .name = "ep93xx-ac97", | |
802 | .id = -1, | |
803 | .num_resources = ARRAY_SIZE(ep93xx_ac97_resources), | |
804 | .resource = ep93xx_ac97_resources, | |
805 | }; | |
806 | ||
807 | void __init ep93xx_register_ac97(void) | |
808 | { | |
809 | /* | |
810 | * Make sure that the AC97 pins are not used by I2S. | |
811 | */ | |
812 | ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_I2SONAC97); | |
813 | ||
814 | platform_device_register(&ep93xx_ac97_device); | |
815 | platform_device_register(&ep93xx_pcm_device); | |
816 | } | |
817 | ||
73303d12 HS |
818 | /************************************************************************* |
819 | * EP93xx Watchdog | |
820 | *************************************************************************/ | |
821 | static struct resource ep93xx_wdt_resources[] = { | |
822 | DEFINE_RES_MEM(EP93XX_WATCHDOG_PHYS_BASE, 0x08), | |
823 | }; | |
824 | ||
825 | static struct platform_device ep93xx_wdt_device = { | |
826 | .name = "ep93xx-wdt", | |
827 | .id = -1, | |
828 | .num_resources = ARRAY_SIZE(ep93xx_wdt_resources), | |
829 | .resource = ep93xx_wdt_resources, | |
830 | }; | |
831 | ||
eb774a09 RP |
832 | /************************************************************************* |
833 | * EP93xx IDE | |
834 | *************************************************************************/ | |
835 | static struct resource ep93xx_ide_resources[] = { | |
836 | DEFINE_RES_MEM(EP93XX_IDE_PHYS_BASE, 0x38), | |
837 | DEFINE_RES_IRQ(IRQ_EP93XX_EXT3), | |
838 | }; | |
839 | ||
840 | static struct platform_device ep93xx_ide_device = { | |
841 | .name = "ep93xx-ide", | |
842 | .id = -1, | |
843 | .dev = { | |
844 | .dma_mask = &ep93xx_ide_device.dev.coherent_dma_mask, | |
845 | .coherent_dma_mask = DMA_BIT_MASK(32), | |
846 | }, | |
847 | .num_resources = ARRAY_SIZE(ep93xx_ide_resources), | |
848 | .resource = ep93xx_ide_resources, | |
849 | }; | |
850 | ||
851 | void __init ep93xx_register_ide(void) | |
852 | { | |
853 | platform_device_register(&ep93xx_ide_device); | |
854 | } | |
855 | ||
856 | int ep93xx_ide_acquire_gpio(struct platform_device *pdev) | |
857 | { | |
858 | int err; | |
859 | int i; | |
860 | ||
861 | err = gpio_request(EP93XX_GPIO_LINE_EGPIO2, dev_name(&pdev->dev)); | |
862 | if (err) | |
863 | return err; | |
864 | err = gpio_request(EP93XX_GPIO_LINE_EGPIO15, dev_name(&pdev->dev)); | |
865 | if (err) | |
866 | goto fail_egpio15; | |
867 | for (i = 2; i < 8; i++) { | |
868 | err = gpio_request(EP93XX_GPIO_LINE_E(i), dev_name(&pdev->dev)); | |
869 | if (err) | |
870 | goto fail_gpio_e; | |
871 | } | |
872 | for (i = 4; i < 8; i++) { | |
873 | err = gpio_request(EP93XX_GPIO_LINE_G(i), dev_name(&pdev->dev)); | |
874 | if (err) | |
875 | goto fail_gpio_g; | |
876 | } | |
877 | for (i = 0; i < 8; i++) { | |
878 | err = gpio_request(EP93XX_GPIO_LINE_H(i), dev_name(&pdev->dev)); | |
879 | if (err) | |
880 | goto fail_gpio_h; | |
881 | } | |
882 | ||
883 | /* GPIO ports E[7:2], G[7:4] and H used by IDE */ | |
884 | ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_EONIDE | | |
885 | EP93XX_SYSCON_DEVCFG_GONIDE | | |
886 | EP93XX_SYSCON_DEVCFG_HONIDE); | |
887 | return 0; | |
888 | ||
889 | fail_gpio_h: | |
890 | for (--i; i >= 0; --i) | |
891 | gpio_free(EP93XX_GPIO_LINE_H(i)); | |
892 | i = 8; | |
893 | fail_gpio_g: | |
894 | for (--i; i >= 4; --i) | |
895 | gpio_free(EP93XX_GPIO_LINE_G(i)); | |
896 | i = 8; | |
897 | fail_gpio_e: | |
898 | for (--i; i >= 2; --i) | |
899 | gpio_free(EP93XX_GPIO_LINE_E(i)); | |
900 | gpio_free(EP93XX_GPIO_LINE_EGPIO15); | |
901 | fail_egpio15: | |
902 | gpio_free(EP93XX_GPIO_LINE_EGPIO2); | |
903 | return err; | |
904 | } | |
905 | EXPORT_SYMBOL(ep93xx_ide_acquire_gpio); | |
906 | ||
907 | void ep93xx_ide_release_gpio(struct platform_device *pdev) | |
908 | { | |
909 | int i; | |
910 | ||
911 | for (i = 2; i < 8; i++) | |
912 | gpio_free(EP93XX_GPIO_LINE_E(i)); | |
913 | for (i = 4; i < 8; i++) | |
914 | gpio_free(EP93XX_GPIO_LINE_G(i)); | |
915 | for (i = 0; i < 8; i++) | |
916 | gpio_free(EP93XX_GPIO_LINE_H(i)); | |
917 | gpio_free(EP93XX_GPIO_LINE_EGPIO15); | |
918 | gpio_free(EP93XX_GPIO_LINE_EGPIO2); | |
919 | ||
920 | ||
921 | /* GPIO ports E[7:2], G[7:4] and H used by GPIO */ | |
922 | ep93xx_devcfg_set_bits(EP93XX_SYSCON_DEVCFG_EONIDE | | |
923 | EP93XX_SYSCON_DEVCFG_GONIDE | | |
924 | EP93XX_SYSCON_DEVCFG_HONIDE); | |
925 | } | |
926 | EXPORT_SYMBOL(ep93xx_ide_release_gpio); | |
927 | ||
e7736d47 LB |
928 | void __init ep93xx_init_devices(void) |
929 | { | |
02239f0a HS |
930 | /* Disallow access to MaverickCrunch initially */ |
931 | ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_CPENA); | |
aee85fe8 | 932 | |
08932d81 RM |
933 | /* Default all ports to GPIO */ |
934 | ep93xx_devcfg_set_bits(EP93XX_SYSCON_DEVCFG_KEYS | | |
935 | EP93XX_SYSCON_DEVCFG_GONK | | |
936 | EP93XX_SYSCON_DEVCFG_EONIDE | | |
937 | EP93XX_SYSCON_DEVCFG_GONIDE | | |
938 | EP93XX_SYSCON_DEVCFG_HONIDE); | |
939 | ||
1e4c8842 HS |
940 | /* Get the GPIO working early, other devices need it */ |
941 | platform_device_register(&ep93xx_gpio_device); | |
b685004f | 942 | |
aee85fe8 LB |
943 | amba_device_register(&uart1_device, &iomem_resource); |
944 | amba_device_register(&uart2_device, &iomem_resource); | |
945 | amba_device_register(&uart3_device, &iomem_resource); | |
41658132 LB |
946 | |
947 | platform_device_register(&ep93xx_rtc_device); | |
1f64eb37 | 948 | platform_device_register(&ep93xx_ohci_device); |
73303d12 | 949 | platform_device_register(&ep93xx_wdt_device); |
a1eacd79 HS |
950 | |
951 | gpio_led_register_device(-1, &ep93xx_led_data); | |
e7736d47 | 952 | } |
3275166e | 953 | |
7b6d864b | 954 | void ep93xx_restart(enum reboot_mode mode, const char *cmd) |
3275166e RK |
955 | { |
956 | /* | |
957 | * Set then clear the SWRST bit to initiate a software reset | |
958 | */ | |
959 | ep93xx_devcfg_set_bits(EP93XX_SYSCON_DEVCFG_SWRST); | |
960 | ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_SWRST); | |
961 | ||
962 | while (1) | |
963 | ; | |
964 | } | |
c914283f SG |
965 | |
966 | void __init ep93xx_init_late(void) | |
967 | { | |
968 | crunch_init(); | |
969 | } |