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352699a3 MZ |
1 | /* |
2 | * linux/arch/arm/mach-pxa/viper.c | |
3 | * | |
4 | * Support for the Arcom VIPER SBC. | |
5 | * | |
6 | * Author: Ian Campbell | |
7 | * Created: Feb 03, 2003 | |
8 | * Copyright: Arcom Control Systems | |
9 | * | |
10 | * Maintained by Marc Zyngier <maz@misterjones.org> | |
11 | * <marc.zyngier@altran.com> | |
12 | * | |
13 | * Based on lubbock.c: | |
14 | * Author: Nicolas Pitre | |
15 | * Created: Jun 15, 2001 | |
16 | * Copyright: MontaVista Software Inc. | |
17 | * | |
18 | * This program is free software; you can redistribute it and/or modify | |
19 | * it under the terms of the GNU General Public License version 2 as | |
20 | * published by the Free Software Foundation. | |
21 | */ | |
22 | ||
23 | #include <linux/types.h> | |
24 | #include <linux/memory.h> | |
25 | #include <linux/cpu.h> | |
26 | #include <linux/cpufreq.h> | |
27 | #include <linux/delay.h> | |
28 | #include <linux/fs.h> | |
29 | #include <linux/init.h> | |
5a0e3ad6 | 30 | #include <linux/slab.h> |
352699a3 MZ |
31 | #include <linux/interrupt.h> |
32 | #include <linux/major.h> | |
33 | #include <linux/module.h> | |
34 | #include <linux/pm.h> | |
35 | #include <linux/sched.h> | |
36 | #include <linux/gpio.h> | |
37 | #include <linux/i2c-gpio.h> | |
38 | #include <linux/serial_8250.h> | |
39 | #include <linux/smc91x.h> | |
40 | #include <linux/pwm_backlight.h> | |
41 | #include <linux/usb/isp116x.h> | |
42 | #include <linux/mtd/mtd.h> | |
43 | #include <linux/mtd/partitions.h> | |
44 | #include <linux/mtd/physmap.h> | |
45 | ||
51c62982 | 46 | #include <mach/pxa25x.h> |
352699a3 MZ |
47 | #include <mach/audio.h> |
48 | #include <mach/pxafb.h> | |
f0a83701 | 49 | #include <plat/i2c.h> |
776abac8 | 50 | #include <mach/regs-uart.h> |
c2de1c38 | 51 | #include <mach/arcom-pcmcia.h> |
352699a3 MZ |
52 | #include <mach/viper.h> |
53 | ||
54 | #include <asm/setup.h> | |
55 | #include <asm/mach-types.h> | |
56 | #include <asm/irq.h> | |
57 | #include <asm/sizes.h> | |
58 | ||
59 | #include <asm/mach/arch.h> | |
60 | #include <asm/mach/map.h> | |
61 | #include <asm/mach/irq.h> | |
62 | ||
63 | #include "generic.h" | |
64 | #include "devices.h" | |
65 | ||
66 | static unsigned int icr; | |
67 | ||
68 | static void viper_icr_set_bit(unsigned int bit) | |
69 | { | |
70 | icr |= bit; | |
71 | VIPER_ICR = icr; | |
72 | } | |
73 | ||
74 | static void viper_icr_clear_bit(unsigned int bit) | |
75 | { | |
76 | icr &= ~bit; | |
77 | VIPER_ICR = icr; | |
78 | } | |
79 | ||
80 | /* This function is used from the pcmcia module to reset the CF */ | |
c2de1c38 | 81 | static void viper_cf_reset(int state) |
352699a3 MZ |
82 | { |
83 | if (state) | |
84 | viper_icr_set_bit(VIPER_ICR_CF_RST); | |
85 | else | |
86 | viper_icr_clear_bit(VIPER_ICR_CF_RST); | |
87 | } | |
c2de1c38 MZ |
88 | |
89 | static struct arcom_pcmcia_pdata viper_pcmcia_info = { | |
90 | .cd_gpio = VIPER_CF_CD_GPIO, | |
91 | .rdy_gpio = VIPER_CF_RDY_GPIO, | |
92 | .pwr_gpio = VIPER_CF_POWER_GPIO, | |
93 | .reset = viper_cf_reset, | |
94 | }; | |
95 | ||
96 | static struct platform_device viper_pcmcia_device = { | |
97 | .name = "viper-pcmcia", | |
98 | .id = -1, | |
99 | .dev = { | |
100 | .platform_data = &viper_pcmcia_info, | |
101 | }, | |
102 | }; | |
352699a3 MZ |
103 | |
104 | /* | |
105 | * The CPLD version register was not present on VIPER boards prior to | |
106 | * v2i1. On v1 boards where the version register is not present we | |
107 | * will just read back the previous value from the databus. | |
108 | * | |
109 | * Therefore we do two reads. The first time we write 0 to the | |
110 | * (read-only) register before reading and the second time we write | |
111 | * 0xff first. If the two reads do not match or they read back as 0xff | |
112 | * or 0x00 then we have version 1 hardware. | |
113 | */ | |
114 | static u8 viper_hw_version(void) | |
115 | { | |
116 | u8 v1, v2; | |
117 | unsigned long flags; | |
118 | ||
119 | local_irq_save(flags); | |
120 | ||
121 | VIPER_VERSION = 0; | |
122 | v1 = VIPER_VERSION; | |
123 | VIPER_VERSION = 0xff; | |
124 | v2 = VIPER_VERSION; | |
125 | ||
126 | v1 = (v1 != v2 || v1 == 0xff) ? 0 : v1; | |
127 | ||
128 | local_irq_restore(flags); | |
129 | return v1; | |
130 | } | |
131 | ||
132 | /* CPU sysdev */ | |
133 | static int viper_cpu_suspend(struct sys_device *sysdev, pm_message_t state) | |
134 | { | |
135 | viper_icr_set_bit(VIPER_ICR_R_DIS); | |
136 | return 0; | |
137 | } | |
138 | ||
139 | static int viper_cpu_resume(struct sys_device *sysdev) | |
140 | { | |
141 | viper_icr_clear_bit(VIPER_ICR_R_DIS); | |
142 | return 0; | |
143 | } | |
144 | ||
145 | static struct sysdev_driver viper_cpu_sysdev_driver = { | |
146 | .suspend = viper_cpu_suspend, | |
147 | .resume = viper_cpu_resume, | |
148 | }; | |
149 | ||
150 | static unsigned int current_voltage_divisor; | |
151 | ||
152 | /* | |
153 | * If force is not true then step from existing to new divisor. If | |
154 | * force is true then jump straight to the new divisor. Stepping is | |
155 | * used because if the jump in voltage is too large, the VCC can dip | |
156 | * too low and the regulator cuts out. | |
157 | * | |
158 | * force can be used to initialize the divisor to a know state by | |
159 | * setting the value for the current clock speed, since we are already | |
160 | * running at that speed we know the voltage should be pretty close so | |
161 | * the jump won't be too large | |
162 | */ | |
163 | static void viper_set_core_cpu_voltage(unsigned long khz, int force) | |
164 | { | |
165 | int i = 0; | |
166 | unsigned int divisor = 0; | |
167 | const char *v; | |
168 | ||
169 | if (khz < 200000) { | |
170 | v = "1.0"; divisor = 0xfff; | |
171 | } else if (khz < 300000) { | |
172 | v = "1.1"; divisor = 0xde5; | |
173 | } else { | |
174 | v = "1.3"; divisor = 0x325; | |
175 | } | |
176 | ||
177 | pr_debug("viper: setting CPU core voltage to %sV at %d.%03dMHz\n", | |
178 | v, (int)khz / 1000, (int)khz % 1000); | |
179 | ||
180 | #define STEP 0x100 | |
181 | do { | |
182 | int step; | |
183 | ||
184 | if (force) | |
185 | step = divisor; | |
186 | else if (current_voltage_divisor < divisor - STEP) | |
187 | step = current_voltage_divisor + STEP; | |
188 | else if (current_voltage_divisor > divisor + STEP) | |
189 | step = current_voltage_divisor - STEP; | |
190 | else | |
191 | step = divisor; | |
192 | force = 0; | |
193 | ||
194 | gpio_set_value(VIPER_PSU_CLK_GPIO, 0); | |
195 | gpio_set_value(VIPER_PSU_nCS_LD_GPIO, 0); | |
196 | ||
197 | for (i = 1 << 11 ; i > 0 ; i >>= 1) { | |
198 | udelay(1); | |
199 | ||
200 | gpio_set_value(VIPER_PSU_DATA_GPIO, step & i); | |
201 | udelay(1); | |
202 | ||
203 | gpio_set_value(VIPER_PSU_CLK_GPIO, 1); | |
204 | udelay(1); | |
205 | ||
206 | gpio_set_value(VIPER_PSU_CLK_GPIO, 0); | |
207 | } | |
208 | udelay(1); | |
209 | ||
210 | gpio_set_value(VIPER_PSU_nCS_LD_GPIO, 1); | |
211 | udelay(1); | |
212 | ||
213 | gpio_set_value(VIPER_PSU_nCS_LD_GPIO, 0); | |
214 | ||
215 | current_voltage_divisor = step; | |
216 | } while (current_voltage_divisor != divisor); | |
217 | } | |
218 | ||
219 | /* Interrupt handling */ | |
220 | static unsigned long viper_irq_enabled_mask; | |
a9ff8f64 MZ |
221 | static const int viper_isa_irqs[] = { 3, 4, 5, 6, 7, 10, 11, 12, 9, 14, 15 }; |
222 | static const int viper_isa_irq_map[] = { | |
223 | 0, /* ISA irq #0, invalid */ | |
224 | 0, /* ISA irq #1, invalid */ | |
225 | 0, /* ISA irq #2, invalid */ | |
226 | 1 << 0, /* ISA irq #3 */ | |
227 | 1 << 1, /* ISA irq #4 */ | |
228 | 1 << 2, /* ISA irq #5 */ | |
229 | 1 << 3, /* ISA irq #6 */ | |
230 | 1 << 4, /* ISA irq #7 */ | |
231 | 0, /* ISA irq #8, invalid */ | |
232 | 1 << 8, /* ISA irq #9 */ | |
233 | 1 << 5, /* ISA irq #10 */ | |
234 | 1 << 6, /* ISA irq #11 */ | |
235 | 1 << 7, /* ISA irq #12 */ | |
236 | 0, /* ISA irq #13, invalid */ | |
237 | 1 << 9, /* ISA irq #14 */ | |
238 | 1 << 10, /* ISA irq #15 */ | |
239 | }; | |
240 | ||
241 | static inline int viper_irq_to_bitmask(unsigned int irq) | |
242 | { | |
243 | return viper_isa_irq_map[irq - PXA_ISA_IRQ(0)]; | |
244 | } | |
245 | ||
246 | static inline int viper_bit_to_irq(int bit) | |
247 | { | |
248 | return viper_isa_irqs[bit] + PXA_ISA_IRQ(0); | |
249 | } | |
352699a3 MZ |
250 | |
251 | static void viper_ack_irq(unsigned int irq) | |
252 | { | |
a9ff8f64 | 253 | int viper_irq = viper_irq_to_bitmask(irq); |
352699a3 | 254 | |
a9ff8f64 MZ |
255 | if (viper_irq & 0xff) |
256 | VIPER_LO_IRQ_STATUS = viper_irq; | |
352699a3 | 257 | else |
a9ff8f64 | 258 | VIPER_HI_IRQ_STATUS = (viper_irq >> 8); |
352699a3 MZ |
259 | } |
260 | ||
261 | static void viper_mask_irq(unsigned int irq) | |
262 | { | |
a9ff8f64 | 263 | viper_irq_enabled_mask &= ~(viper_irq_to_bitmask(irq)); |
352699a3 MZ |
264 | } |
265 | ||
266 | static void viper_unmask_irq(unsigned int irq) | |
267 | { | |
a9ff8f64 | 268 | viper_irq_enabled_mask |= viper_irq_to_bitmask(irq); |
352699a3 MZ |
269 | } |
270 | ||
271 | static inline unsigned long viper_irq_pending(void) | |
272 | { | |
273 | return (VIPER_HI_IRQ_STATUS << 8 | VIPER_LO_IRQ_STATUS) & | |
274 | viper_irq_enabled_mask; | |
275 | } | |
276 | ||
277 | static void viper_irq_handler(unsigned int irq, struct irq_desc *desc) | |
278 | { | |
279 | unsigned long pending; | |
280 | ||
281 | pending = viper_irq_pending(); | |
282 | do { | |
a9ff8f64 MZ |
283 | /* we're in a chained irq handler, |
284 | * so ack the interrupt by hand */ | |
669cb51c | 285 | desc->chip->ack(irq); |
a9ff8f64 | 286 | |
352699a3 | 287 | if (likely(pending)) { |
a9ff8f64 | 288 | irq = viper_bit_to_irq(__ffs(pending)); |
352699a3 MZ |
289 | generic_handle_irq(irq); |
290 | } | |
291 | pending = viper_irq_pending(); | |
292 | } while (pending); | |
293 | } | |
294 | ||
295 | static struct irq_chip viper_irq_chip = { | |
296 | .name = "ISA", | |
297 | .ack = viper_ack_irq, | |
298 | .mask = viper_mask_irq, | |
299 | .unmask = viper_unmask_irq | |
300 | }; | |
301 | ||
302 | static void __init viper_init_irq(void) | |
303 | { | |
a9ff8f64 | 304 | int level; |
352699a3 MZ |
305 | int isa_irq; |
306 | ||
307 | pxa25x_init_irq(); | |
308 | ||
309 | /* setup ISA IRQs */ | |
a9ff8f64 MZ |
310 | for (level = 0; level < ARRAY_SIZE(viper_isa_irqs); level++) { |
311 | isa_irq = viper_bit_to_irq(level); | |
352699a3 MZ |
312 | set_irq_chip(isa_irq, &viper_irq_chip); |
313 | set_irq_handler(isa_irq, handle_edge_irq); | |
314 | set_irq_flags(isa_irq, IRQF_VALID | IRQF_PROBE); | |
315 | } | |
316 | ||
317 | set_irq_chained_handler(gpio_to_irq(VIPER_CPLD_GPIO), | |
318 | viper_irq_handler); | |
319 | set_irq_type(gpio_to_irq(VIPER_CPLD_GPIO), IRQ_TYPE_EDGE_BOTH); | |
352699a3 MZ |
320 | } |
321 | ||
322 | /* Flat Panel */ | |
323 | static struct pxafb_mode_info fb_mode_info[] = { | |
324 | { | |
325 | .pixclock = 157500, | |
326 | ||
327 | .xres = 320, | |
328 | .yres = 240, | |
329 | ||
330 | .bpp = 16, | |
331 | ||
332 | .hsync_len = 63, | |
333 | .left_margin = 7, | |
334 | .right_margin = 13, | |
335 | ||
336 | .vsync_len = 20, | |
337 | .upper_margin = 0, | |
338 | .lower_margin = 0, | |
339 | ||
340 | .sync = 0, | |
341 | }, | |
342 | }; | |
343 | ||
344 | static struct pxafb_mach_info fb_info = { | |
345 | .modes = fb_mode_info, | |
346 | .num_modes = 1, | |
347 | .lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL, | |
348 | }; | |
349 | ||
350 | static int viper_backlight_init(struct device *dev) | |
351 | { | |
352 | int ret; | |
353 | ||
354 | /* GPIO9 and 10 control FB backlight. Initialise to off */ | |
355 | ret = gpio_request(VIPER_BCKLIGHT_EN_GPIO, "Backlight"); | |
356 | if (ret) | |
357 | goto err_request_bckl; | |
358 | ||
359 | ret = gpio_request(VIPER_LCD_EN_GPIO, "LCD"); | |
360 | if (ret) | |
361 | goto err_request_lcd; | |
362 | ||
363 | ret = gpio_direction_output(VIPER_BCKLIGHT_EN_GPIO, 0); | |
364 | if (ret) | |
365 | goto err_dir; | |
366 | ||
367 | ret = gpio_direction_output(VIPER_LCD_EN_GPIO, 0); | |
368 | if (ret) | |
369 | goto err_dir; | |
370 | ||
371 | return 0; | |
372 | ||
373 | err_dir: | |
374 | gpio_free(VIPER_LCD_EN_GPIO); | |
375 | err_request_lcd: | |
376 | gpio_free(VIPER_BCKLIGHT_EN_GPIO); | |
377 | err_request_bckl: | |
378 | dev_err(dev, "Failed to setup LCD GPIOs\n"); | |
379 | ||
380 | return ret; | |
381 | } | |
382 | ||
2d51a521 | 383 | static int viper_backlight_notify(struct device *dev, int brightness) |
352699a3 MZ |
384 | { |
385 | gpio_set_value(VIPER_LCD_EN_GPIO, !!brightness); | |
386 | gpio_set_value(VIPER_BCKLIGHT_EN_GPIO, !!brightness); | |
387 | ||
388 | return brightness; | |
389 | } | |
390 | ||
391 | static void viper_backlight_exit(struct device *dev) | |
392 | { | |
393 | gpio_free(VIPER_LCD_EN_GPIO); | |
394 | gpio_free(VIPER_BCKLIGHT_EN_GPIO); | |
395 | } | |
396 | ||
397 | static struct platform_pwm_backlight_data viper_backlight_data = { | |
398 | .pwm_id = 0, | |
399 | .max_brightness = 100, | |
400 | .dft_brightness = 100, | |
401 | .pwm_period_ns = 1000000, | |
402 | .init = viper_backlight_init, | |
403 | .notify = viper_backlight_notify, | |
404 | .exit = viper_backlight_exit, | |
405 | }; | |
406 | ||
407 | static struct platform_device viper_backlight_device = { | |
408 | .name = "pwm-backlight", | |
409 | .dev = { | |
410 | .parent = &pxa25x_device_pwm0.dev, | |
411 | .platform_data = &viper_backlight_data, | |
412 | }, | |
413 | }; | |
414 | ||
415 | /* Ethernet */ | |
416 | static struct resource smc91x_resources[] = { | |
417 | [0] = { | |
418 | .name = "smc91x-regs", | |
419 | .start = VIPER_ETH_PHYS + 0x300, | |
420 | .end = VIPER_ETH_PHYS + 0x30f, | |
421 | .flags = IORESOURCE_MEM, | |
422 | }, | |
423 | [1] = { | |
424 | .start = gpio_to_irq(VIPER_ETH_GPIO), | |
425 | .end = gpio_to_irq(VIPER_ETH_GPIO), | |
426 | .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE, | |
427 | }, | |
428 | [2] = { | |
429 | .name = "smc91x-data32", | |
430 | .start = VIPER_ETH_DATA_PHYS, | |
431 | .end = VIPER_ETH_DATA_PHYS + 3, | |
432 | .flags = IORESOURCE_MEM, | |
433 | }, | |
434 | }; | |
435 | ||
436 | static struct smc91x_platdata viper_smc91x_info = { | |
437 | .flags = SMC91X_USE_16BIT | SMC91X_NOWAIT, | |
438 | .leda = RPC_LED_100_10, | |
439 | .ledb = RPC_LED_TX_RX, | |
440 | }; | |
441 | ||
442 | static struct platform_device smc91x_device = { | |
443 | .name = "smc91x", | |
444 | .id = -1, | |
445 | .num_resources = ARRAY_SIZE(smc91x_resources), | |
446 | .resource = smc91x_resources, | |
447 | .dev = { | |
448 | .platform_data = &viper_smc91x_info, | |
449 | }, | |
450 | }; | |
451 | ||
452 | /* i2c */ | |
453 | static struct i2c_gpio_platform_data i2c_bus_data = { | |
454 | .sda_pin = VIPER_RTC_I2C_SDA_GPIO, | |
455 | .scl_pin = VIPER_RTC_I2C_SCL_GPIO, | |
456 | .udelay = 10, | |
457 | .timeout = 100, | |
458 | }; | |
459 | ||
460 | static struct platform_device i2c_bus_device = { | |
461 | .name = "i2c-gpio", | |
462 | .id = 1, /* pxa2xx-i2c is bus 0, so start at 1 */ | |
463 | .dev = { | |
464 | .platform_data = &i2c_bus_data, | |
465 | } | |
466 | }; | |
467 | ||
468 | static struct i2c_board_info __initdata viper_i2c_devices[] = { | |
469 | { | |
470 | I2C_BOARD_INFO("ds1338", 0x68), | |
471 | }, | |
472 | }; | |
473 | ||
474 | /* | |
475 | * Serial configuration: | |
476 | * You can either have the standard PXA ports driven by the PXA driver, | |
477 | * or all the ports (PXA + 16850) driven by the 8250 driver. | |
478 | * Choose your poison. | |
479 | */ | |
480 | ||
481 | static struct resource viper_serial_resources[] = { | |
482 | #ifndef CONFIG_SERIAL_PXA | |
483 | { | |
484 | .start = 0x40100000, | |
485 | .end = 0x4010001f, | |
486 | .flags = IORESOURCE_MEM, | |
487 | }, | |
488 | { | |
489 | .start = 0x40200000, | |
490 | .end = 0x4020001f, | |
491 | .flags = IORESOURCE_MEM, | |
492 | }, | |
493 | { | |
494 | .start = 0x40700000, | |
495 | .end = 0x4070001f, | |
496 | .flags = IORESOURCE_MEM, | |
497 | }, | |
498 | { | |
499 | .start = VIPER_UARTA_PHYS, | |
500 | .end = VIPER_UARTA_PHYS + 0xf, | |
501 | .flags = IORESOURCE_MEM, | |
502 | }, | |
503 | { | |
504 | .start = VIPER_UARTB_PHYS, | |
505 | .end = VIPER_UARTB_PHYS + 0xf, | |
506 | .flags = IORESOURCE_MEM, | |
507 | }, | |
508 | #else | |
509 | { | |
510 | 0, | |
511 | }, | |
512 | #endif | |
513 | }; | |
514 | ||
515 | static struct plat_serial8250_port serial_platform_data[] = { | |
516 | #ifndef CONFIG_SERIAL_PXA | |
517 | /* Internal UARTs */ | |
518 | { | |
519 | .membase = (void *)&FFUART, | |
520 | .mapbase = __PREG(FFUART), | |
521 | .irq = IRQ_FFUART, | |
522 | .uartclk = 921600 * 16, | |
523 | .regshift = 2, | |
524 | .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, | |
525 | .iotype = UPIO_MEM, | |
526 | }, | |
527 | { | |
528 | .membase = (void *)&BTUART, | |
529 | .mapbase = __PREG(BTUART), | |
530 | .irq = IRQ_BTUART, | |
531 | .uartclk = 921600 * 16, | |
532 | .regshift = 2, | |
533 | .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, | |
534 | .iotype = UPIO_MEM, | |
535 | }, | |
536 | { | |
537 | .membase = (void *)&STUART, | |
538 | .mapbase = __PREG(STUART), | |
539 | .irq = IRQ_STUART, | |
540 | .uartclk = 921600 * 16, | |
541 | .regshift = 2, | |
542 | .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, | |
543 | .iotype = UPIO_MEM, | |
544 | }, | |
545 | /* External UARTs */ | |
546 | { | |
547 | .mapbase = VIPER_UARTA_PHYS, | |
548 | .irq = gpio_to_irq(VIPER_UARTA_GPIO), | |
3fe6ccff | 549 | .irqflags = IRQF_TRIGGER_RISING, |
352699a3 MZ |
550 | .uartclk = 1843200, |
551 | .regshift = 1, | |
552 | .iotype = UPIO_MEM, | |
553 | .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP | | |
554 | UPF_SKIP_TEST, | |
555 | }, | |
556 | { | |
557 | .mapbase = VIPER_UARTB_PHYS, | |
558 | .irq = gpio_to_irq(VIPER_UARTB_GPIO), | |
3fe6ccff | 559 | .irqflags = IRQF_TRIGGER_RISING, |
352699a3 MZ |
560 | .uartclk = 1843200, |
561 | .regshift = 1, | |
562 | .iotype = UPIO_MEM, | |
563 | .flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP | | |
564 | UPF_SKIP_TEST, | |
565 | }, | |
566 | #endif | |
567 | { }, | |
568 | }; | |
569 | ||
570 | static struct platform_device serial_device = { | |
571 | .name = "serial8250", | |
572 | .id = 0, | |
573 | .dev = { | |
574 | .platform_data = serial_platform_data, | |
575 | }, | |
576 | .num_resources = ARRAY_SIZE(viper_serial_resources), | |
577 | .resource = viper_serial_resources, | |
578 | }; | |
579 | ||
580 | /* USB */ | |
581 | static void isp116x_delay(struct device *dev, int delay) | |
582 | { | |
583 | ndelay(delay); | |
584 | } | |
585 | ||
586 | static struct resource isp116x_resources[] = { | |
587 | [0] = { /* DATA */ | |
588 | .start = VIPER_USB_PHYS + 0, | |
589 | .end = VIPER_USB_PHYS + 1, | |
590 | .flags = IORESOURCE_MEM, | |
591 | }, | |
592 | [1] = { /* ADDR */ | |
593 | .start = VIPER_USB_PHYS + 2, | |
594 | .end = VIPER_USB_PHYS + 3, | |
595 | .flags = IORESOURCE_MEM, | |
596 | }, | |
597 | [2] = { | |
598 | .start = gpio_to_irq(VIPER_USB_GPIO), | |
599 | .end = gpio_to_irq(VIPER_USB_GPIO), | |
600 | .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE, | |
601 | }, | |
602 | }; | |
603 | ||
604 | /* (DataBusWidth16|AnalogOCEnable|DREQOutputPolarity|DownstreamPort15KRSel ) */ | |
605 | static struct isp116x_platform_data isp116x_platform_data = { | |
606 | /* Enable internal resistors on downstream ports */ | |
607 | .sel15Kres = 1, | |
608 | /* On-chip overcurrent protection */ | |
609 | .oc_enable = 1, | |
610 | /* INT output polarity */ | |
611 | .int_act_high = 1, | |
612 | /* INT edge or level triggered */ | |
613 | .int_edge_triggered = 0, | |
614 | ||
615 | /* WAKEUP pin connected - NOT SUPPORTED */ | |
616 | /* .remote_wakeup_connected = 0, */ | |
617 | /* Wakeup by devices on usb bus enabled */ | |
618 | .remote_wakeup_enable = 0, | |
619 | .delay = isp116x_delay, | |
620 | }; | |
621 | ||
622 | static struct platform_device isp116x_device = { | |
623 | .name = "isp116x-hcd", | |
624 | .id = -1, | |
625 | .num_resources = ARRAY_SIZE(isp116x_resources), | |
626 | .resource = isp116x_resources, | |
627 | .dev = { | |
628 | .platform_data = &isp116x_platform_data, | |
629 | }, | |
630 | ||
631 | }; | |
632 | ||
633 | /* MTD */ | |
634 | static struct resource mtd_resources[] = { | |
635 | [0] = { /* RedBoot config + filesystem flash */ | |
636 | .start = VIPER_FLASH_PHYS, | |
637 | .end = VIPER_FLASH_PHYS + SZ_32M - 1, | |
638 | .flags = IORESOURCE_MEM, | |
639 | }, | |
640 | [1] = { /* Boot flash */ | |
641 | .start = VIPER_BOOT_PHYS, | |
642 | .end = VIPER_BOOT_PHYS + SZ_1M - 1, | |
643 | .flags = IORESOURCE_MEM, | |
644 | }, | |
645 | [2] = { /* | |
646 | * SRAM size is actually 256KB, 8bits, with a sparse mapping | |
647 | * (each byte is on a 16bit boundary). | |
648 | */ | |
649 | .start = _VIPER_SRAM_BASE, | |
650 | .end = _VIPER_SRAM_BASE + SZ_512K - 1, | |
651 | .flags = IORESOURCE_MEM, | |
652 | }, | |
653 | }; | |
654 | ||
655 | static struct mtd_partition viper_boot_flash_partition = { | |
656 | .name = "RedBoot", | |
657 | .size = SZ_1M, | |
658 | .offset = 0, | |
659 | .mask_flags = MTD_WRITEABLE, /* force R/O */ | |
660 | }; | |
661 | ||
662 | static struct physmap_flash_data viper_flash_data[] = { | |
663 | [0] = { | |
664 | .width = 2, | |
665 | .parts = NULL, | |
666 | .nr_parts = 0, | |
667 | }, | |
668 | [1] = { | |
669 | .width = 2, | |
670 | .parts = &viper_boot_flash_partition, | |
671 | .nr_parts = 1, | |
672 | }, | |
673 | }; | |
674 | ||
675 | static struct platform_device viper_mtd_devices[] = { | |
676 | [0] = { | |
677 | .name = "physmap-flash", | |
678 | .id = 0, | |
679 | .dev = { | |
680 | .platform_data = &viper_flash_data[0], | |
681 | }, | |
682 | .resource = &mtd_resources[0], | |
683 | .num_resources = 1, | |
684 | }, | |
685 | [1] = { | |
686 | .name = "physmap-flash", | |
687 | .id = 1, | |
688 | .dev = { | |
689 | .platform_data = &viper_flash_data[1], | |
690 | }, | |
691 | .resource = &mtd_resources[1], | |
692 | .num_resources = 1, | |
693 | }, | |
694 | }; | |
695 | ||
696 | static struct platform_device *viper_devs[] __initdata = { | |
697 | &smc91x_device, | |
698 | &i2c_bus_device, | |
699 | &serial_device, | |
700 | &isp116x_device, | |
701 | &viper_mtd_devices[0], | |
702 | &viper_mtd_devices[1], | |
703 | &viper_backlight_device, | |
c2de1c38 | 704 | &viper_pcmcia_device, |
352699a3 MZ |
705 | }; |
706 | ||
707 | static mfp_cfg_t viper_pin_config[] __initdata = { | |
708 | /* Chip selects */ | |
709 | GPIO15_nCS_1, | |
710 | GPIO78_nCS_2, | |
711 | GPIO79_nCS_3, | |
712 | GPIO80_nCS_4, | |
713 | GPIO33_nCS_5, | |
714 | ||
c11b6a42 EM |
715 | /* AC97 */ |
716 | GPIO28_AC97_BITCLK, | |
717 | GPIO29_AC97_SDATA_IN_0, | |
718 | GPIO30_AC97_SDATA_OUT, | |
719 | GPIO31_AC97_SYNC, | |
720 | ||
352699a3 MZ |
721 | /* FP Backlight */ |
722 | GPIO9_GPIO, /* VIPER_BCKLIGHT_EN_GPIO */ | |
723 | GPIO10_GPIO, /* VIPER_LCD_EN_GPIO */ | |
724 | GPIO16_PWM0_OUT, | |
725 | ||
726 | /* Ethernet PHY Ready */ | |
727 | GPIO18_RDY, | |
728 | ||
729 | /* Serial shutdown */ | |
730 | GPIO12_GPIO | MFP_LPM_DRIVE_HIGH, /* VIPER_UART_SHDN_GPIO */ | |
731 | ||
732 | /* Compact-Flash / PC104 */ | |
733 | GPIO48_nPOE, | |
734 | GPIO49_nPWE, | |
735 | GPIO50_nPIOR, | |
736 | GPIO51_nPIOW, | |
737 | GPIO52_nPCE_1, | |
738 | GPIO53_nPCE_2, | |
739 | GPIO54_nPSKTSEL, | |
740 | GPIO55_nPREG, | |
741 | GPIO56_nPWAIT, | |
742 | GPIO57_nIOIS16, | |
743 | GPIO8_GPIO, /* VIPER_CF_RDY_GPIO */ | |
744 | GPIO32_GPIO, /* VIPER_CF_CD_GPIO */ | |
745 | GPIO82_GPIO, /* VIPER_CF_POWER_GPIO */ | |
746 | ||
747 | /* Integrated UPS control */ | |
748 | GPIO20_GPIO, /* VIPER_UPS_GPIO */ | |
749 | ||
750 | /* Vcc regulator control */ | |
751 | GPIO6_GPIO, /* VIPER_PSU_DATA_GPIO */ | |
752 | GPIO11_GPIO, /* VIPER_PSU_CLK_GPIO */ | |
753 | GPIO19_GPIO, /* VIPER_PSU_nCS_LD_GPIO */ | |
754 | ||
755 | /* i2c busses */ | |
756 | GPIO26_GPIO, /* VIPER_TPM_I2C_SDA_GPIO */ | |
757 | GPIO27_GPIO, /* VIPER_TPM_I2C_SCL_GPIO */ | |
758 | GPIO83_GPIO, /* VIPER_RTC_I2C_SDA_GPIO */ | |
759 | GPIO84_GPIO, /* VIPER_RTC_I2C_SCL_GPIO */ | |
760 | ||
761 | /* PC/104 Interrupt */ | |
762 | GPIO1_GPIO | WAKEUP_ON_EDGE_RISE, /* VIPER_CPLD_GPIO */ | |
763 | }; | |
764 | ||
765 | static unsigned long viper_tpm; | |
766 | ||
767 | static int __init viper_tpm_setup(char *str) | |
768 | { | |
769 | strict_strtoul(str, 10, &viper_tpm); | |
770 | return 1; | |
771 | } | |
772 | ||
773 | __setup("tpm=", viper_tpm_setup); | |
774 | ||
775 | static void __init viper_tpm_init(void) | |
776 | { | |
777 | struct platform_device *tpm_device; | |
778 | struct i2c_gpio_platform_data i2c_tpm_data = { | |
779 | .sda_pin = VIPER_TPM_I2C_SDA_GPIO, | |
780 | .scl_pin = VIPER_TPM_I2C_SCL_GPIO, | |
781 | .udelay = 10, | |
782 | .timeout = 100, | |
783 | }; | |
784 | char *errstr; | |
785 | ||
786 | /* Allocate TPM i2c bus if requested */ | |
787 | if (!viper_tpm) | |
788 | return; | |
789 | ||
790 | tpm_device = platform_device_alloc("i2c-gpio", 2); | |
791 | if (tpm_device) { | |
792 | if (!platform_device_add_data(tpm_device, | |
793 | &i2c_tpm_data, | |
794 | sizeof(i2c_tpm_data))) { | |
795 | if (platform_device_add(tpm_device)) { | |
796 | errstr = "register TPM i2c bus"; | |
797 | goto error_free_tpm; | |
798 | } | |
799 | } else { | |
800 | errstr = "allocate TPM i2c bus data"; | |
801 | goto error_free_tpm; | |
802 | } | |
803 | } else { | |
804 | errstr = "allocate TPM i2c device"; | |
805 | goto error_tpm; | |
806 | } | |
807 | ||
808 | return; | |
809 | ||
810 | error_free_tpm: | |
811 | kfree(tpm_device); | |
812 | error_tpm: | |
813 | pr_err("viper: Couldn't %s, giving up\n", errstr); | |
814 | } | |
815 | ||
816 | static void __init viper_init_vcore_gpios(void) | |
817 | { | |
818 | if (gpio_request(VIPER_PSU_DATA_GPIO, "PSU data")) | |
819 | goto err_request_data; | |
820 | ||
821 | if (gpio_request(VIPER_PSU_CLK_GPIO, "PSU clock")) | |
822 | goto err_request_clk; | |
823 | ||
824 | if (gpio_request(VIPER_PSU_nCS_LD_GPIO, "PSU cs")) | |
825 | goto err_request_cs; | |
826 | ||
827 | if (gpio_direction_output(VIPER_PSU_DATA_GPIO, 0) || | |
828 | gpio_direction_output(VIPER_PSU_CLK_GPIO, 0) || | |
829 | gpio_direction_output(VIPER_PSU_nCS_LD_GPIO, 0)) | |
830 | goto err_dir; | |
831 | ||
832 | /* c/should assume redboot set the correct level ??? */ | |
833 | viper_set_core_cpu_voltage(get_clk_frequency_khz(0), 1); | |
834 | ||
835 | return; | |
836 | ||
837 | err_dir: | |
838 | gpio_free(VIPER_PSU_nCS_LD_GPIO); | |
839 | err_request_cs: | |
840 | gpio_free(VIPER_PSU_CLK_GPIO); | |
841 | err_request_clk: | |
842 | gpio_free(VIPER_PSU_DATA_GPIO); | |
843 | err_request_data: | |
844 | pr_err("viper: Failed to setup vcore control GPIOs\n"); | |
845 | } | |
846 | ||
847 | static void __init viper_init_serial_gpio(void) | |
848 | { | |
849 | if (gpio_request(VIPER_UART_SHDN_GPIO, "UARTs shutdown")) | |
850 | goto err_request; | |
851 | ||
852 | if (gpio_direction_output(VIPER_UART_SHDN_GPIO, 0)) | |
853 | goto err_dir; | |
854 | ||
855 | return; | |
856 | ||
857 | err_dir: | |
858 | gpio_free(VIPER_UART_SHDN_GPIO); | |
859 | err_request: | |
860 | pr_err("viper: Failed to setup UART shutdown GPIO\n"); | |
861 | } | |
862 | ||
863 | #ifdef CONFIG_CPU_FREQ | |
864 | static int viper_cpufreq_notifier(struct notifier_block *nb, | |
865 | unsigned long val, void *data) | |
866 | { | |
867 | struct cpufreq_freqs *freq = data; | |
868 | ||
869 | /* TODO: Adjust timings??? */ | |
870 | ||
871 | switch (val) { | |
872 | case CPUFREQ_PRECHANGE: | |
873 | if (freq->old < freq->new) { | |
874 | /* we are getting faster so raise the voltage | |
875 | * before we change freq */ | |
876 | viper_set_core_cpu_voltage(freq->new, 0); | |
877 | } | |
878 | break; | |
879 | case CPUFREQ_POSTCHANGE: | |
880 | if (freq->old > freq->new) { | |
881 | /* we are slowing down so drop the power | |
882 | * after we change freq */ | |
883 | viper_set_core_cpu_voltage(freq->new, 0); | |
884 | } | |
885 | break; | |
886 | case CPUFREQ_RESUMECHANGE: | |
887 | viper_set_core_cpu_voltage(freq->new, 0); | |
888 | break; | |
889 | default: | |
890 | /* ignore */ | |
891 | break; | |
892 | } | |
893 | ||
894 | return 0; | |
895 | } | |
896 | ||
897 | static struct notifier_block viper_cpufreq_notifier_block = { | |
898 | .notifier_call = viper_cpufreq_notifier | |
899 | }; | |
900 | ||
901 | static void __init viper_init_cpufreq(void) | |
902 | { | |
903 | if (cpufreq_register_notifier(&viper_cpufreq_notifier_block, | |
904 | CPUFREQ_TRANSITION_NOTIFIER)) | |
905 | pr_err("viper: Failed to setup cpufreq notifier\n"); | |
906 | } | |
907 | #else | |
908 | static inline void viper_init_cpufreq(void) {} | |
909 | #endif | |
910 | ||
911 | static void viper_power_off(void) | |
912 | { | |
913 | pr_notice("Shutting off UPS\n"); | |
914 | gpio_set_value(VIPER_UPS_GPIO, 1); | |
915 | /* Spin to death... */ | |
916 | while (1); | |
917 | } | |
918 | ||
919 | static void __init viper_init(void) | |
920 | { | |
921 | u8 version; | |
922 | ||
923 | pm_power_off = viper_power_off; | |
924 | ||
925 | pxa2xx_mfp_config(ARRAY_AND_SIZE(viper_pin_config)); | |
926 | ||
cc155c6f RK |
927 | pxa_set_ffuart_info(NULL); |
928 | pxa_set_btuart_info(NULL); | |
929 | pxa_set_stuart_info(NULL); | |
930 | ||
352699a3 MZ |
931 | /* Wake-up serial console */ |
932 | viper_init_serial_gpio(); | |
933 | ||
934 | set_pxa_fb_info(&fb_info); | |
935 | ||
936 | /* v1 hardware cannot use the datacs line */ | |
937 | version = viper_hw_version(); | |
938 | if (version == 0) | |
939 | smc91x_device.num_resources--; | |
940 | ||
941 | pxa_set_i2c_info(NULL); | |
942 | platform_add_devices(viper_devs, ARRAY_SIZE(viper_devs)); | |
943 | ||
944 | viper_init_vcore_gpios(); | |
945 | viper_init_cpufreq(); | |
946 | ||
947 | sysdev_driver_register(&cpu_sysdev_class, &viper_cpu_sysdev_driver); | |
948 | ||
949 | if (version) { | |
950 | pr_info("viper: hardware v%di%d detected. " | |
951 | "CPLD revision %d.\n", | |
952 | VIPER_BOARD_VERSION(version), | |
953 | VIPER_BOARD_ISSUE(version), | |
954 | VIPER_CPLD_REVISION(version)); | |
955 | system_rev = (VIPER_BOARD_VERSION(version) << 8) | | |
956 | (VIPER_BOARD_ISSUE(version) << 4) | | |
957 | VIPER_CPLD_REVISION(version); | |
958 | } else { | |
959 | pr_info("viper: No version register.\n"); | |
960 | } | |
961 | ||
962 | i2c_register_board_info(1, ARRAY_AND_SIZE(viper_i2c_devices)); | |
963 | ||
964 | viper_tpm_init(); | |
965 | pxa_set_ac97_info(NULL); | |
966 | } | |
967 | ||
968 | static struct map_desc viper_io_desc[] __initdata = { | |
969 | { | |
970 | .virtual = VIPER_CPLD_BASE, | |
971 | .pfn = __phys_to_pfn(VIPER_CPLD_PHYS), | |
972 | .length = 0x00300000, | |
973 | .type = MT_DEVICE, | |
974 | }, | |
975 | { | |
976 | .virtual = VIPER_PC104IO_BASE, | |
b393c696 | 977 | .pfn = __phys_to_pfn(0x30000000), |
352699a3 MZ |
978 | .length = 0x00800000, |
979 | .type = MT_DEVICE, | |
980 | }, | |
981 | }; | |
982 | ||
983 | static void __init viper_map_io(void) | |
984 | { | |
985 | pxa_map_io(); | |
986 | ||
987 | iotable_init(viper_io_desc, ARRAY_SIZE(viper_io_desc)); | |
988 | ||
989 | PCFR |= PCFR_OPDE; | |
990 | } | |
991 | ||
992 | MACHINE_START(VIPER, "Arcom/Eurotech VIPER SBC") | |
993 | /* Maintainer: Marc Zyngier <maz@misterjones.org> */ | |
994 | .phys_io = 0x40000000, | |
995 | .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc, | |
996 | .boot_params = 0xa0000100, | |
997 | .map_io = viper_map_io, | |
998 | .init_irq = viper_init_irq, | |
999 | .timer = &pxa_timer, | |
1000 | .init_machine = viper_init, | |
1001 | MACHINE_END |