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> |
e7736d47 | 37 | |
a09e64fb | 38 | #include <mach/hardware.h> |
c6012189 | 39 | #include <mach/fb.h> |
12f56c68 | 40 | #include <mach/ep93xx_keypad.h> |
4fec9978 | 41 | #include <mach/ep93xx_spi.h> |
bd5f12a2 | 42 | #include <mach/gpio-ep93xx.h> |
e7736d47 LB |
43 | |
44 | #include <asm/mach/map.h> | |
45 | #include <asm/mach/time.h> | |
e7736d47 LB |
46 | |
47 | #include <asm/hardware/vic.h> | |
48 | ||
a05baf33 | 49 | #include "soc.h" |
e7736d47 LB |
50 | |
51 | /************************************************************************* | |
52 | * Static I/O mappings that are needed for all EP93xx platforms | |
53 | *************************************************************************/ | |
54 | static struct map_desc ep93xx_io_desc[] __initdata = { | |
55 | { | |
56 | .virtual = EP93XX_AHB_VIRT_BASE, | |
57 | .pfn = __phys_to_pfn(EP93XX_AHB_PHYS_BASE), | |
58 | .length = EP93XX_AHB_SIZE, | |
59 | .type = MT_DEVICE, | |
60 | }, { | |
61 | .virtual = EP93XX_APB_VIRT_BASE, | |
62 | .pfn = __phys_to_pfn(EP93XX_APB_PHYS_BASE), | |
63 | .length = EP93XX_APB_SIZE, | |
64 | .type = MT_DEVICE, | |
65 | }, | |
66 | }; | |
67 | ||
68 | void __init ep93xx_map_io(void) | |
69 | { | |
70 | iotable_init(ep93xx_io_desc, ARRAY_SIZE(ep93xx_io_desc)); | |
71 | } | |
72 | ||
73 | ||
74 | /************************************************************************* | |
75 | * Timer handling for EP93xx | |
76 | ************************************************************************* | |
77 | * The ep93xx has four internal timers. Timers 1, 2 (both 16 bit) and | |
78 | * 3 (32 bit) count down at 508 kHz, are self-reloading, and can generate | |
79 | * an interrupt on underflow. Timer 4 (40 bit) counts down at 983.04 kHz, | |
80 | * is free-running, and can't generate interrupts. | |
81 | * | |
82 | * The 508 kHz timers are ideal for use for the timer interrupt, as the | |
83 | * most common values of HZ divide 508 kHz nicely. We pick one of the 16 | |
84 | * bit timers (timer 1) since we don't need more than 16 bits of reload | |
85 | * value as long as HZ >= 8. | |
86 | * | |
87 | * The higher clock rate of timer 4 makes it a better choice than the | |
88 | * other timers for use in gettimeoffset(), while the fact that it can't | |
89 | * generate interrupts means we don't have to worry about not being able | |
90 | * to use this timer for something else. We also use timer 4 for keeping | |
91 | * track of lost jiffies. | |
92 | */ | |
1587a373 HS |
93 | #define EP93XX_TIMER_REG(x) (EP93XX_TIMER_BASE + (x)) |
94 | #define EP93XX_TIMER1_LOAD EP93XX_TIMER_REG(0x00) | |
95 | #define EP93XX_TIMER1_VALUE EP93XX_TIMER_REG(0x04) | |
96 | #define EP93XX_TIMER1_CONTROL EP93XX_TIMER_REG(0x08) | |
97 | #define EP93XX_TIMER123_CONTROL_ENABLE (1 << 7) | |
98 | #define EP93XX_TIMER123_CONTROL_MODE (1 << 6) | |
99 | #define EP93XX_TIMER123_CONTROL_CLKSEL (1 << 3) | |
100 | #define EP93XX_TIMER1_CLEAR EP93XX_TIMER_REG(0x0c) | |
101 | #define EP93XX_TIMER2_LOAD EP93XX_TIMER_REG(0x20) | |
102 | #define EP93XX_TIMER2_VALUE EP93XX_TIMER_REG(0x24) | |
103 | #define EP93XX_TIMER2_CONTROL EP93XX_TIMER_REG(0x28) | |
104 | #define EP93XX_TIMER2_CLEAR EP93XX_TIMER_REG(0x2c) | |
105 | #define EP93XX_TIMER4_VALUE_LOW EP93XX_TIMER_REG(0x60) | |
106 | #define EP93XX_TIMER4_VALUE_HIGH EP93XX_TIMER_REG(0x64) | |
107 | #define EP93XX_TIMER4_VALUE_HIGH_ENABLE (1 << 8) | |
108 | #define EP93XX_TIMER3_LOAD EP93XX_TIMER_REG(0x80) | |
109 | #define EP93XX_TIMER3_VALUE EP93XX_TIMER_REG(0x84) | |
110 | #define EP93XX_TIMER3_CONTROL EP93XX_TIMER_REG(0x88) | |
111 | #define EP93XX_TIMER3_CLEAR EP93XX_TIMER_REG(0x8c) | |
112 | ||
113 | #define EP93XX_TIMER123_CLOCK 508469 | |
114 | #define EP93XX_TIMER4_CLOCK 983040 | |
115 | ||
116 | #define TIMER1_RELOAD ((EP93XX_TIMER123_CLOCK / HZ) - 1) | |
af1057ab | 117 | #define TIMER4_TICKS_PER_JIFFY DIV_ROUND_CLOSEST(CLOCK_TICK_RATE, HZ) |
e7736d47 | 118 | |
1587a373 HS |
119 | static unsigned int last_jiffy_time; |
120 | ||
d5565f76 | 121 | static irqreturn_t ep93xx_timer_interrupt(int irq, void *dev_id) |
e7736d47 | 122 | { |
1587a373 | 123 | /* Writing any value clears the timer interrupt */ |
e7736d47 | 124 | __raw_writel(1, EP93XX_TIMER1_CLEAR); |
1587a373 HS |
125 | |
126 | /* Recover lost jiffies */ | |
f869afab LB |
127 | while ((signed long) |
128 | (__raw_readl(EP93XX_TIMER4_VALUE_LOW) - last_jiffy_time) | |
e7736d47 LB |
129 | >= TIMER4_TICKS_PER_JIFFY) { |
130 | last_jiffy_time += TIMER4_TICKS_PER_JIFFY; | |
0cd61b68 | 131 | timer_tick(); |
e7736d47 LB |
132 | } |
133 | ||
e7736d47 LB |
134 | return IRQ_HANDLED; |
135 | } | |
136 | ||
137 | static struct irqaction ep93xx_timer_irq = { | |
138 | .name = "ep93xx timer", | |
b30fabad | 139 | .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL, |
e7736d47 LB |
140 | .handler = ep93xx_timer_interrupt, |
141 | }; | |
142 | ||
143 | static void __init ep93xx_timer_init(void) | |
144 | { | |
1587a373 HS |
145 | u32 tmode = EP93XX_TIMER123_CONTROL_MODE | |
146 | EP93XX_TIMER123_CONTROL_CLKSEL; | |
147 | ||
e7736d47 | 148 | /* Enable periodic HZ timer. */ |
1587a373 HS |
149 | __raw_writel(tmode, EP93XX_TIMER1_CONTROL); |
150 | __raw_writel(TIMER1_RELOAD, EP93XX_TIMER1_LOAD); | |
151 | __raw_writel(tmode | EP93XX_TIMER123_CONTROL_ENABLE, | |
152 | EP93XX_TIMER1_CONTROL); | |
e7736d47 LB |
153 | |
154 | /* Enable lost jiffy timer. */ | |
1587a373 HS |
155 | __raw_writel(EP93XX_TIMER4_VALUE_HIGH_ENABLE, |
156 | EP93XX_TIMER4_VALUE_HIGH); | |
e7736d47 LB |
157 | |
158 | setup_irq(IRQ_EP93XX_TIMER1, &ep93xx_timer_irq); | |
159 | } | |
160 | ||
161 | static unsigned long ep93xx_gettimeoffset(void) | |
162 | { | |
163 | int offset; | |
164 | ||
165 | offset = __raw_readl(EP93XX_TIMER4_VALUE_LOW) - last_jiffy_time; | |
166 | ||
167 | /* Calculate (1000000 / 983040) * offset. */ | |
168 | return offset + (53 * offset / 3072); | |
169 | } | |
170 | ||
171 | struct sys_timer ep93xx_timer = { | |
172 | .init = ep93xx_timer_init, | |
173 | .offset = ep93xx_gettimeoffset, | |
174 | }; | |
175 | ||
176 | ||
177 | /************************************************************************* | |
178 | * EP93xx IRQ handling | |
179 | *************************************************************************/ | |
180 | void __init ep93xx_init_irq(void) | |
181 | { | |
5396730b HS |
182 | vic_init(EP93XX_VIC1_BASE, 0, EP93XX_VIC1_VALID_IRQ_MASK, 0); |
183 | vic_init(EP93XX_VIC2_BASE, 32, EP93XX_VIC2_VALID_IRQ_MASK, 0); | |
e7736d47 LB |
184 | } |
185 | ||
186 | ||
02239f0a HS |
187 | /************************************************************************* |
188 | * EP93xx System Controller Software Locked register handling | |
189 | *************************************************************************/ | |
190 | ||
191 | /* | |
192 | * syscon_swlock prevents anything else from writing to the syscon | |
193 | * block while a software locked register is being written. | |
194 | */ | |
195 | static DEFINE_SPINLOCK(syscon_swlock); | |
196 | ||
fbeeea53 | 197 | void ep93xx_syscon_swlocked_write(unsigned int val, void __iomem *reg) |
02239f0a HS |
198 | { |
199 | unsigned long flags; | |
200 | ||
201 | spin_lock_irqsave(&syscon_swlock, flags); | |
202 | ||
203 | __raw_writel(0xaa, EP93XX_SYSCON_SWLOCK); | |
204 | __raw_writel(val, reg); | |
205 | ||
206 | spin_unlock_irqrestore(&syscon_swlock, flags); | |
207 | } | |
02239f0a HS |
208 | |
209 | void ep93xx_devcfg_set_clear(unsigned int set_bits, unsigned int clear_bits) | |
210 | { | |
211 | unsigned long flags; | |
212 | unsigned int val; | |
213 | ||
214 | spin_lock_irqsave(&syscon_swlock, flags); | |
215 | ||
216 | val = __raw_readl(EP93XX_SYSCON_DEVCFG); | |
02239f0a | 217 | val &= ~clear_bits; |
a0fb007b | 218 | val |= set_bits; |
02239f0a HS |
219 | __raw_writel(0xaa, EP93XX_SYSCON_SWLOCK); |
220 | __raw_writel(val, EP93XX_SYSCON_DEVCFG); | |
221 | ||
222 | spin_unlock_irqrestore(&syscon_swlock, flags); | |
223 | } | |
02239f0a | 224 | |
99e6a23a MW |
225 | /** |
226 | * ep93xx_chip_revision() - returns the EP93xx chip revision | |
227 | * | |
228 | * See <mach/platform.h> for more information. | |
229 | */ | |
230 | unsigned int ep93xx_chip_revision(void) | |
231 | { | |
232 | unsigned int v; | |
233 | ||
234 | v = __raw_readl(EP93XX_SYSCON_SYSCFG); | |
235 | v &= EP93XX_SYSCON_SYSCFG_REV_MASK; | |
236 | v >>= EP93XX_SYSCON_SYSCFG_REV_SHIFT; | |
237 | return v; | |
238 | } | |
02239f0a | 239 | |
1e4c8842 HS |
240 | /************************************************************************* |
241 | * EP93xx GPIO | |
242 | *************************************************************************/ | |
243 | static struct resource ep93xx_gpio_resource[] = { | |
ede55aaa | 244 | DEFINE_RES_MEM(EP93XX_GPIO_PHYS_BASE, 0xcc), |
1e4c8842 HS |
245 | }; |
246 | ||
247 | static struct platform_device ep93xx_gpio_device = { | |
248 | .name = "gpio-ep93xx", | |
249 | .id = -1, | |
250 | .num_resources = ARRAY_SIZE(ep93xx_gpio_resource), | |
251 | .resource = ep93xx_gpio_resource, | |
252 | }; | |
253 | ||
e7736d47 LB |
254 | /************************************************************************* |
255 | * EP93xx peripheral handling | |
256 | *************************************************************************/ | |
aee85fe8 LB |
257 | #define EP93XX_UART_MCR_OFFSET (0x0100) |
258 | ||
259 | static void ep93xx_uart_set_mctrl(struct amba_device *dev, | |
260 | void __iomem *base, unsigned int mctrl) | |
261 | { | |
262 | unsigned int mcr; | |
263 | ||
264 | mcr = 0; | |
186dcaa4 | 265 | if (mctrl & TIOCM_RTS) |
aee85fe8 | 266 | mcr |= 2; |
186dcaa4 | 267 | if (mctrl & TIOCM_DTR) |
aee85fe8 LB |
268 | mcr |= 1; |
269 | ||
270 | __raw_writel(mcr, base + EP93XX_UART_MCR_OFFSET); | |
271 | } | |
272 | ||
273 | static struct amba_pl010_data ep93xx_uart_data = { | |
274 | .set_mctrl = ep93xx_uart_set_mctrl, | |
275 | }; | |
276 | ||
0b26051b RK |
277 | static AMBA_APB_DEVICE(uart1, "apb:uart1", 0x00041010, EP93XX_UART1_PHYS_BASE, |
278 | { IRQ_EP93XX_UART1 }, &ep93xx_uart_data); | |
aee85fe8 | 279 | |
0b26051b RK |
280 | static AMBA_APB_DEVICE(uart2, "apb:uart2", 0x00041010, EP93XX_UART2_PHYS_BASE, |
281 | { IRQ_EP93XX_UART2 }, &ep93xx_uart_data); | |
aee85fe8 | 282 | |
0b26051b RK |
283 | static AMBA_APB_DEVICE(uart3, "apb:uart3", 0x00041010, EP93XX_UART3_PHYS_BASE, |
284 | { IRQ_EP93XX_UART3 }, &ep93xx_uart_data); | |
41658132 | 285 | |
38f7b009 | 286 | static struct resource ep93xx_rtc_resource[] = { |
ede55aaa | 287 | DEFINE_RES_MEM(EP93XX_RTC_PHYS_BASE, 0x10c), |
38f7b009 HS |
288 | }; |
289 | ||
41658132 | 290 | static struct platform_device ep93xx_rtc_device = { |
38f7b009 HS |
291 | .name = "ep93xx-rtc", |
292 | .id = -1, | |
293 | .num_resources = ARRAY_SIZE(ep93xx_rtc_resource), | |
294 | .resource = ep93xx_rtc_resource, | |
41658132 LB |
295 | }; |
296 | ||
297 | ||
1f64eb37 | 298 | static struct resource ep93xx_ohci_resources[] = { |
ede55aaa HS |
299 | DEFINE_RES_MEM(EP93XX_USB_PHYS_BASE, 0x1000), |
300 | DEFINE_RES_IRQ(IRQ_EP93XX_USB), | |
1f64eb37 LB |
301 | }; |
302 | ||
63890a0e | 303 | |
1f64eb37 LB |
304 | static struct platform_device ep93xx_ohci_device = { |
305 | .name = "ep93xx-ohci", | |
306 | .id = -1, | |
307 | .dev = { | |
63890a0e MK |
308 | .dma_mask = &ep93xx_ohci_device.dev.coherent_dma_mask, |
309 | .coherent_dma_mask = DMA_BIT_MASK(32), | |
1f64eb37 LB |
310 | }, |
311 | .num_resources = ARRAY_SIZE(ep93xx_ohci_resources), | |
312 | .resource = ep93xx_ohci_resources, | |
313 | }; | |
314 | ||
b370e082 | 315 | |
16bcf78f HS |
316 | /************************************************************************* |
317 | * EP93xx physmap'ed flash | |
318 | *************************************************************************/ | |
319 | static struct physmap_flash_data ep93xx_flash_data; | |
320 | ||
321 | static struct resource ep93xx_flash_resource = { | |
322 | .flags = IORESOURCE_MEM, | |
323 | }; | |
324 | ||
325 | static struct platform_device ep93xx_flash = { | |
326 | .name = "physmap-flash", | |
327 | .id = 0, | |
328 | .dev = { | |
329 | .platform_data = &ep93xx_flash_data, | |
330 | }, | |
331 | .num_resources = 1, | |
332 | .resource = &ep93xx_flash_resource, | |
333 | }; | |
334 | ||
335 | /** | |
336 | * ep93xx_register_flash() - Register the external flash device. | |
337 | * @width: bank width in octets | |
338 | * @start: resource start address | |
339 | * @size: resource size | |
340 | */ | |
341 | void __init ep93xx_register_flash(unsigned int width, | |
342 | resource_size_t start, resource_size_t size) | |
343 | { | |
344 | ep93xx_flash_data.width = width; | |
345 | ||
346 | ep93xx_flash_resource.start = start; | |
347 | ep93xx_flash_resource.end = start + size - 1; | |
348 | ||
349 | platform_device_register(&ep93xx_flash); | |
350 | } | |
351 | ||
352 | ||
b370e082 HS |
353 | /************************************************************************* |
354 | * EP93xx ethernet peripheral handling | |
355 | *************************************************************************/ | |
a0a08fdc HS |
356 | static struct ep93xx_eth_data ep93xx_eth_data; |
357 | ||
358 | static struct resource ep93xx_eth_resource[] = { | |
ede55aaa | 359 | DEFINE_RES_MEM(EP93XX_ETHERNET_PHYS_BASE, 0x10000), |
011b2e84 | 360 | DEFINE_RES_IRQ(IRQ_EP93XX_ETHERNET), |
a0a08fdc HS |
361 | }; |
362 | ||
fa70cf47 MW |
363 | static u64 ep93xx_eth_dma_mask = DMA_BIT_MASK(32); |
364 | ||
a0a08fdc HS |
365 | static struct platform_device ep93xx_eth_device = { |
366 | .name = "ep93xx-eth", | |
367 | .id = -1, | |
368 | .dev = { | |
fa70cf47 MW |
369 | .platform_data = &ep93xx_eth_data, |
370 | .coherent_dma_mask = DMA_BIT_MASK(32), | |
371 | .dma_mask = &ep93xx_eth_dma_mask, | |
a0a08fdc HS |
372 | }, |
373 | .num_resources = ARRAY_SIZE(ep93xx_eth_resource), | |
374 | .resource = ep93xx_eth_resource, | |
375 | }; | |
376 | ||
b370e082 HS |
377 | /** |
378 | * ep93xx_register_eth - Register the built-in ethernet platform device. | |
379 | * @data: platform specific ethernet configuration (__initdata) | |
380 | * @copy_addr: flag indicating that the MAC address should be copied | |
381 | * from the IndAd registers (as programmed by the bootloader) | |
382 | */ | |
a0a08fdc HS |
383 | void __init ep93xx_register_eth(struct ep93xx_eth_data *data, int copy_addr) |
384 | { | |
5b1c3c85 HS |
385 | if (copy_addr) |
386 | memcpy_fromio(data->dev_addr, EP93XX_ETHERNET_BASE + 0x50, 6); | |
a0a08fdc HS |
387 | |
388 | ep93xx_eth_data = *data; | |
389 | platform_device_register(&ep93xx_eth_device); | |
390 | } | |
391 | ||
6531a991 HS |
392 | |
393 | /************************************************************************* | |
394 | * EP93xx i2c peripheral handling | |
395 | *************************************************************************/ | |
396 | static struct i2c_gpio_platform_data ep93xx_i2c_data; | |
d52a26a9 HS |
397 | |
398 | static struct platform_device ep93xx_i2c_device = { | |
b370e082 HS |
399 | .name = "i2c-gpio", |
400 | .id = 0, | |
401 | .dev = { | |
402 | .platform_data = &ep93xx_i2c_data, | |
403 | }, | |
d52a26a9 HS |
404 | }; |
405 | ||
b370e082 HS |
406 | /** |
407 | * ep93xx_register_i2c - Register the i2c platform device. | |
408 | * @data: platform specific i2c-gpio configuration (__initdata) | |
409 | * @devices: platform specific i2c bus device information (__initdata) | |
410 | * @num: the number of devices on the i2c bus | |
411 | */ | |
6531a991 HS |
412 | void __init ep93xx_register_i2c(struct i2c_gpio_platform_data *data, |
413 | struct i2c_board_info *devices, int num) | |
d52a26a9 | 414 | { |
6531a991 HS |
415 | /* |
416 | * Set the EEPROM interface pin drive type control. | |
417 | * Defines the driver type for the EECLK and EEDAT pins as either | |
418 | * open drain, which will require an external pull-up, or a normal | |
419 | * CMOS driver. | |
420 | */ | |
421 | if (data->sda_is_open_drain && data->sda_pin != EP93XX_GPIO_LINE_EEDAT) | |
64d6882d | 422 | pr_warning("sda != EEDAT, open drain has no effect\n"); |
6531a991 | 423 | if (data->scl_is_open_drain && data->scl_pin != EP93XX_GPIO_LINE_EECLK) |
64d6882d | 424 | pr_warning("scl != EECLK, open drain has no effect\n"); |
6531a991 HS |
425 | |
426 | __raw_writel((data->sda_is_open_drain << 1) | | |
427 | (data->scl_is_open_drain << 0), | |
428 | EP93XX_GPIO_EEDRIVE); | |
429 | ||
430 | ep93xx_i2c_data = *data; | |
d52a26a9 HS |
431 | i2c_register_board_info(0, devices, num); |
432 | platform_device_register(&ep93xx_i2c_device); | |
433 | } | |
434 | ||
4fec9978 MW |
435 | /************************************************************************* |
436 | * EP93xx SPI peripheral handling | |
437 | *************************************************************************/ | |
438 | static struct ep93xx_spi_info ep93xx_spi_master_data; | |
439 | ||
440 | static struct resource ep93xx_spi_resources[] = { | |
ede55aaa HS |
441 | DEFINE_RES_MEM(EP93XX_SPI_PHYS_BASE, 0x18), |
442 | DEFINE_RES_IRQ(IRQ_EP93XX_SSP), | |
4fec9978 MW |
443 | }; |
444 | ||
626a96db MW |
445 | static u64 ep93xx_spi_dma_mask = DMA_BIT_MASK(32); |
446 | ||
4fec9978 MW |
447 | static struct platform_device ep93xx_spi_device = { |
448 | .name = "ep93xx-spi", | |
449 | .id = 0, | |
450 | .dev = { | |
626a96db MW |
451 | .platform_data = &ep93xx_spi_master_data, |
452 | .coherent_dma_mask = DMA_BIT_MASK(32), | |
453 | .dma_mask = &ep93xx_spi_dma_mask, | |
4fec9978 MW |
454 | }, |
455 | .num_resources = ARRAY_SIZE(ep93xx_spi_resources), | |
456 | .resource = ep93xx_spi_resources, | |
457 | }; | |
458 | ||
459 | /** | |
460 | * ep93xx_register_spi() - registers spi platform device | |
461 | * @info: ep93xx board specific spi master info (__initdata) | |
462 | * @devices: SPI devices to register (__initdata) | |
463 | * @num: number of SPI devices to register | |
464 | * | |
465 | * This function registers platform device for the EP93xx SPI controller and | |
466 | * also makes sure that SPI pins are muxed so that I2S is not using those pins. | |
467 | */ | |
468 | void __init ep93xx_register_spi(struct ep93xx_spi_info *info, | |
469 | struct spi_board_info *devices, int num) | |
470 | { | |
471 | /* | |
472 | * When SPI is used, we need to make sure that I2S is muxed off from | |
473 | * SPI pins. | |
474 | */ | |
475 | ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_I2SONSSP); | |
476 | ||
477 | ep93xx_spi_master_data = *info; | |
478 | spi_register_board_info(devices, num); | |
479 | platform_device_register(&ep93xx_spi_device); | |
480 | } | |
3aa7a9a3 HS |
481 | |
482 | /************************************************************************* | |
483 | * EP93xx LEDs | |
484 | *************************************************************************/ | |
485 | static struct gpio_led ep93xx_led_pins[] = { | |
486 | { | |
b370e082 HS |
487 | .name = "platform:grled", |
488 | .gpio = EP93XX_GPIO_LINE_GRLED, | |
3aa7a9a3 | 489 | }, { |
b370e082 HS |
490 | .name = "platform:rdled", |
491 | .gpio = EP93XX_GPIO_LINE_RDLED, | |
3aa7a9a3 HS |
492 | }, |
493 | }; | |
494 | ||
495 | static struct gpio_led_platform_data ep93xx_led_data = { | |
496 | .num_leds = ARRAY_SIZE(ep93xx_led_pins), | |
497 | .leds = ep93xx_led_pins, | |
498 | }; | |
499 | ||
500 | static struct platform_device ep93xx_leds = { | |
501 | .name = "leds-gpio", | |
502 | .id = -1, | |
503 | .dev = { | |
504 | .platform_data = &ep93xx_led_data, | |
505 | }, | |
506 | }; | |
507 | ||
508 | ||
ef12379f HS |
509 | /************************************************************************* |
510 | * EP93xx pwm peripheral handling | |
511 | *************************************************************************/ | |
512 | static struct resource ep93xx_pwm0_resource[] = { | |
ede55aaa | 513 | DEFINE_RES_MEM(EP93XX_PWM_PHYS_BASE, 0x10), |
ef12379f HS |
514 | }; |
515 | ||
516 | static struct platform_device ep93xx_pwm0_device = { | |
517 | .name = "ep93xx-pwm", | |
518 | .id = 0, | |
519 | .num_resources = ARRAY_SIZE(ep93xx_pwm0_resource), | |
520 | .resource = ep93xx_pwm0_resource, | |
521 | }; | |
522 | ||
523 | static struct resource ep93xx_pwm1_resource[] = { | |
ede55aaa | 524 | DEFINE_RES_MEM(EP93XX_PWM_PHYS_BASE + 0x20, 0x10), |
ef12379f HS |
525 | }; |
526 | ||
527 | static struct platform_device ep93xx_pwm1_device = { | |
528 | .name = "ep93xx-pwm", | |
529 | .id = 1, | |
530 | .num_resources = ARRAY_SIZE(ep93xx_pwm1_resource), | |
531 | .resource = ep93xx_pwm1_resource, | |
532 | }; | |
533 | ||
534 | void __init ep93xx_register_pwm(int pwm0, int pwm1) | |
535 | { | |
536 | if (pwm0) | |
537 | platform_device_register(&ep93xx_pwm0_device); | |
538 | ||
539 | /* NOTE: EP9307 does not have PWMOUT1 (pin EGPIO14) */ | |
540 | if (pwm1) | |
541 | platform_device_register(&ep93xx_pwm1_device); | |
542 | } | |
543 | ||
544 | int ep93xx_pwm_acquire_gpio(struct platform_device *pdev) | |
545 | { | |
546 | int err; | |
547 | ||
548 | if (pdev->id == 0) { | |
549 | err = 0; | |
550 | } else if (pdev->id == 1) { | |
551 | err = gpio_request(EP93XX_GPIO_LINE_EGPIO14, | |
552 | dev_name(&pdev->dev)); | |
553 | if (err) | |
554 | return err; | |
555 | err = gpio_direction_output(EP93XX_GPIO_LINE_EGPIO14, 0); | |
556 | if (err) | |
557 | goto fail; | |
558 | ||
559 | /* PWM 1 output on EGPIO[14] */ | |
560 | ep93xx_devcfg_set_bits(EP93XX_SYSCON_DEVCFG_PONG); | |
561 | } else { | |
562 | err = -ENODEV; | |
563 | } | |
564 | ||
565 | return err; | |
566 | ||
567 | fail: | |
568 | gpio_free(EP93XX_GPIO_LINE_EGPIO14); | |
569 | return err; | |
570 | } | |
571 | EXPORT_SYMBOL(ep93xx_pwm_acquire_gpio); | |
572 | ||
573 | void ep93xx_pwm_release_gpio(struct platform_device *pdev) | |
574 | { | |
575 | if (pdev->id == 1) { | |
576 | gpio_direction_input(EP93XX_GPIO_LINE_EGPIO14); | |
577 | gpio_free(EP93XX_GPIO_LINE_EGPIO14); | |
578 | ||
579 | /* EGPIO[14] used for GPIO */ | |
580 | ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_PONG); | |
581 | } | |
582 | } | |
583 | EXPORT_SYMBOL(ep93xx_pwm_release_gpio); | |
584 | ||
585 | ||
c6012189 RM |
586 | /************************************************************************* |
587 | * EP93xx video peripheral handling | |
588 | *************************************************************************/ | |
589 | static struct ep93xxfb_mach_info ep93xxfb_data; | |
590 | ||
591 | static struct resource ep93xx_fb_resource[] = { | |
ede55aaa | 592 | DEFINE_RES_MEM(EP93XX_RASTER_PHYS_BASE, 0x800), |
c6012189 RM |
593 | }; |
594 | ||
595 | static struct platform_device ep93xx_fb_device = { | |
596 | .name = "ep93xx-fb", | |
597 | .id = -1, | |
598 | .dev = { | |
b370e082 | 599 | .platform_data = &ep93xxfb_data, |
c6012189 RM |
600 | .coherent_dma_mask = DMA_BIT_MASK(32), |
601 | .dma_mask = &ep93xx_fb_device.dev.coherent_dma_mask, | |
602 | }, | |
603 | .num_resources = ARRAY_SIZE(ep93xx_fb_resource), | |
604 | .resource = ep93xx_fb_resource, | |
605 | }; | |
606 | ||
0fd19580 RM |
607 | /* The backlight use a single register in the framebuffer's register space */ |
608 | #define EP93XX_RASTER_REG_BRIGHTNESS 0x20 | |
609 | ||
610 | static struct resource ep93xx_bl_resources[] = { | |
611 | DEFINE_RES_MEM(EP93XX_RASTER_PHYS_BASE + | |
612 | EP93XX_RASTER_REG_BRIGHTNESS, 0x04), | |
613 | }; | |
614 | ||
6ea4b741 HS |
615 | static struct platform_device ep93xx_bl_device = { |
616 | .name = "ep93xx-bl", | |
617 | .id = -1, | |
0fd19580 RM |
618 | .num_resources = ARRAY_SIZE(ep93xx_bl_resources), |
619 | .resource = ep93xx_bl_resources, | |
6ea4b741 HS |
620 | }; |
621 | ||
b370e082 HS |
622 | /** |
623 | * ep93xx_register_fb - Register the framebuffer platform device. | |
624 | * @data: platform specific framebuffer configuration (__initdata) | |
625 | */ | |
c6012189 RM |
626 | void __init ep93xx_register_fb(struct ep93xxfb_mach_info *data) |
627 | { | |
628 | ep93xxfb_data = *data; | |
629 | platform_device_register(&ep93xx_fb_device); | |
6ea4b741 | 630 | platform_device_register(&ep93xx_bl_device); |
c6012189 RM |
631 | } |
632 | ||
12f56c68 HS |
633 | |
634 | /************************************************************************* | |
635 | * EP93xx matrix keypad peripheral handling | |
636 | *************************************************************************/ | |
b370e082 HS |
637 | static struct ep93xx_keypad_platform_data ep93xx_keypad_data; |
638 | ||
12f56c68 | 639 | static struct resource ep93xx_keypad_resource[] = { |
ede55aaa HS |
640 | DEFINE_RES_MEM(EP93XX_KEY_MATRIX_PHYS_BASE, 0x0c), |
641 | DEFINE_RES_IRQ(IRQ_EP93XX_KEY), | |
12f56c68 HS |
642 | }; |
643 | ||
644 | static struct platform_device ep93xx_keypad_device = { | |
b370e082 HS |
645 | .name = "ep93xx-keypad", |
646 | .id = -1, | |
647 | .dev = { | |
648 | .platform_data = &ep93xx_keypad_data, | |
649 | }, | |
650 | .num_resources = ARRAY_SIZE(ep93xx_keypad_resource), | |
651 | .resource = ep93xx_keypad_resource, | |
12f56c68 HS |
652 | }; |
653 | ||
b370e082 HS |
654 | /** |
655 | * ep93xx_register_keypad - Register the keypad platform device. | |
656 | * @data: platform specific keypad configuration (__initdata) | |
657 | */ | |
12f56c68 HS |
658 | void __init ep93xx_register_keypad(struct ep93xx_keypad_platform_data *data) |
659 | { | |
b370e082 | 660 | ep93xx_keypad_data = *data; |
12f56c68 HS |
661 | platform_device_register(&ep93xx_keypad_device); |
662 | } | |
663 | ||
664 | int ep93xx_keypad_acquire_gpio(struct platform_device *pdev) | |
665 | { | |
666 | int err; | |
667 | int i; | |
668 | ||
669 | for (i = 0; i < 8; i++) { | |
670 | err = gpio_request(EP93XX_GPIO_LINE_C(i), dev_name(&pdev->dev)); | |
671 | if (err) | |
672 | goto fail_gpio_c; | |
673 | err = gpio_request(EP93XX_GPIO_LINE_D(i), dev_name(&pdev->dev)); | |
674 | if (err) | |
675 | goto fail_gpio_d; | |
676 | } | |
677 | ||
678 | /* Enable the keypad controller; GPIO ports C and D used for keypad */ | |
679 | ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_KEYS | | |
680 | EP93XX_SYSCON_DEVCFG_GONK); | |
681 | ||
682 | return 0; | |
683 | ||
684 | fail_gpio_d: | |
685 | gpio_free(EP93XX_GPIO_LINE_C(i)); | |
686 | fail_gpio_c: | |
687 | for ( ; i >= 0; --i) { | |
688 | gpio_free(EP93XX_GPIO_LINE_C(i)); | |
689 | gpio_free(EP93XX_GPIO_LINE_D(i)); | |
690 | } | |
691 | return err; | |
692 | } | |
693 | EXPORT_SYMBOL(ep93xx_keypad_acquire_gpio); | |
694 | ||
695 | void ep93xx_keypad_release_gpio(struct platform_device *pdev) | |
696 | { | |
697 | int i; | |
698 | ||
699 | for (i = 0; i < 8; i++) { | |
700 | gpio_free(EP93XX_GPIO_LINE_C(i)); | |
701 | gpio_free(EP93XX_GPIO_LINE_D(i)); | |
702 | } | |
703 | ||
704 | /* Disable the keypad controller; GPIO ports C and D used for GPIO */ | |
705 | ep93xx_devcfg_set_bits(EP93XX_SYSCON_DEVCFG_KEYS | | |
706 | EP93XX_SYSCON_DEVCFG_GONK); | |
707 | } | |
708 | EXPORT_SYMBOL(ep93xx_keypad_release_gpio); | |
709 | ||
ed67ea82 RM |
710 | /************************************************************************* |
711 | * EP93xx I2S audio peripheral handling | |
712 | *************************************************************************/ | |
713 | static struct resource ep93xx_i2s_resource[] = { | |
ede55aaa | 714 | DEFINE_RES_MEM(EP93XX_I2S_PHYS_BASE, 0x100), |
ed67ea82 RM |
715 | }; |
716 | ||
717 | static struct platform_device ep93xx_i2s_device = { | |
718 | .name = "ep93xx-i2s", | |
719 | .id = -1, | |
720 | .num_resources = ARRAY_SIZE(ep93xx_i2s_resource), | |
721 | .resource = ep93xx_i2s_resource, | |
722 | }; | |
723 | ||
f0fba2ad LG |
724 | static struct platform_device ep93xx_pcm_device = { |
725 | .name = "ep93xx-pcm-audio", | |
726 | .id = -1, | |
727 | }; | |
728 | ||
ed67ea82 RM |
729 | void __init ep93xx_register_i2s(void) |
730 | { | |
731 | platform_device_register(&ep93xx_i2s_device); | |
f0fba2ad | 732 | platform_device_register(&ep93xx_pcm_device); |
ed67ea82 RM |
733 | } |
734 | ||
735 | #define EP93XX_SYSCON_DEVCFG_I2S_MASK (EP93XX_SYSCON_DEVCFG_I2SONSSP | \ | |
736 | EP93XX_SYSCON_DEVCFG_I2SONAC97) | |
737 | ||
738 | #define EP93XX_I2SCLKDIV_MASK (EP93XX_SYSCON_I2SCLKDIV_ORIDE | \ | |
739 | EP93XX_SYSCON_I2SCLKDIV_SPOL) | |
740 | ||
f15855bf | 741 | int ep93xx_i2s_acquire(void) |
ed67ea82 RM |
742 | { |
743 | unsigned val; | |
744 | ||
f15855bf RM |
745 | ep93xx_devcfg_set_clear(EP93XX_SYSCON_DEVCFG_I2SONAC97, |
746 | EP93XX_SYSCON_DEVCFG_I2S_MASK); | |
ed67ea82 RM |
747 | |
748 | /* | |
749 | * This is potentially racy with the clock api for i2s_mclk, sclk and | |
750 | * lrclk. Since the i2s driver is the only user of those clocks we | |
751 | * rely on it to prevent parallel use of this function and the | |
752 | * clock api for the i2s clocks. | |
753 | */ | |
754 | val = __raw_readl(EP93XX_SYSCON_I2SCLKDIV); | |
755 | val &= ~EP93XX_I2SCLKDIV_MASK; | |
f15855bf | 756 | val |= EP93XX_SYSCON_I2SCLKDIV_ORIDE | EP93XX_SYSCON_I2SCLKDIV_SPOL; |
ed67ea82 RM |
757 | ep93xx_syscon_swlocked_write(val, EP93XX_SYSCON_I2SCLKDIV); |
758 | ||
759 | return 0; | |
760 | } | |
761 | EXPORT_SYMBOL(ep93xx_i2s_acquire); | |
762 | ||
763 | void ep93xx_i2s_release(void) | |
764 | { | |
765 | ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_I2S_MASK); | |
766 | } | |
767 | EXPORT_SYMBOL(ep93xx_i2s_release); | |
12f56c68 | 768 | |
534bc7fa MW |
769 | /************************************************************************* |
770 | * EP93xx AC97 audio peripheral handling | |
771 | *************************************************************************/ | |
772 | static struct resource ep93xx_ac97_resources[] = { | |
ede55aaa HS |
773 | DEFINE_RES_MEM(EP93XX_AAC_PHYS_BASE, 0xac), |
774 | DEFINE_RES_IRQ(IRQ_EP93XX_AACINTR), | |
534bc7fa MW |
775 | }; |
776 | ||
777 | static struct platform_device ep93xx_ac97_device = { | |
778 | .name = "ep93xx-ac97", | |
779 | .id = -1, | |
780 | .num_resources = ARRAY_SIZE(ep93xx_ac97_resources), | |
781 | .resource = ep93xx_ac97_resources, | |
782 | }; | |
783 | ||
784 | void __init ep93xx_register_ac97(void) | |
785 | { | |
786 | /* | |
787 | * Make sure that the AC97 pins are not used by I2S. | |
788 | */ | |
789 | ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_I2SONAC97); | |
790 | ||
791 | platform_device_register(&ep93xx_ac97_device); | |
792 | platform_device_register(&ep93xx_pcm_device); | |
793 | } | |
794 | ||
73303d12 HS |
795 | /************************************************************************* |
796 | * EP93xx Watchdog | |
797 | *************************************************************************/ | |
798 | static struct resource ep93xx_wdt_resources[] = { | |
799 | DEFINE_RES_MEM(EP93XX_WATCHDOG_PHYS_BASE, 0x08), | |
800 | }; | |
801 | ||
802 | static struct platform_device ep93xx_wdt_device = { | |
803 | .name = "ep93xx-wdt", | |
804 | .id = -1, | |
805 | .num_resources = ARRAY_SIZE(ep93xx_wdt_resources), | |
806 | .resource = ep93xx_wdt_resources, | |
807 | }; | |
808 | ||
e7736d47 LB |
809 | void __init ep93xx_init_devices(void) |
810 | { | |
02239f0a HS |
811 | /* Disallow access to MaverickCrunch initially */ |
812 | ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_CPENA); | |
aee85fe8 | 813 | |
08932d81 RM |
814 | /* Default all ports to GPIO */ |
815 | ep93xx_devcfg_set_bits(EP93XX_SYSCON_DEVCFG_KEYS | | |
816 | EP93XX_SYSCON_DEVCFG_GONK | | |
817 | EP93XX_SYSCON_DEVCFG_EONIDE | | |
818 | EP93XX_SYSCON_DEVCFG_GONIDE | | |
819 | EP93XX_SYSCON_DEVCFG_HONIDE); | |
820 | ||
1e4c8842 HS |
821 | /* Get the GPIO working early, other devices need it */ |
822 | platform_device_register(&ep93xx_gpio_device); | |
b685004f | 823 | |
aee85fe8 LB |
824 | amba_device_register(&uart1_device, &iomem_resource); |
825 | amba_device_register(&uart2_device, &iomem_resource); | |
826 | amba_device_register(&uart3_device, &iomem_resource); | |
41658132 LB |
827 | |
828 | platform_device_register(&ep93xx_rtc_device); | |
1f64eb37 | 829 | platform_device_register(&ep93xx_ohci_device); |
3aa7a9a3 | 830 | platform_device_register(&ep93xx_leds); |
73303d12 | 831 | platform_device_register(&ep93xx_wdt_device); |
e7736d47 | 832 | } |
3275166e RK |
833 | |
834 | void ep93xx_restart(char mode, const char *cmd) | |
835 | { | |
836 | /* | |
837 | * Set then clear the SWRST bit to initiate a software reset | |
838 | */ | |
839 | ep93xx_devcfg_set_bits(EP93XX_SYSCON_DEVCFG_SWRST); | |
840 | ep93xx_devcfg_clear_bits(EP93XX_SYSCON_DEVCFG_SWRST); | |
841 | ||
842 | while (1) | |
843 | ; | |
844 | } |