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/arch/arm/mach-orion5x/dns323-setup.c

https://bitbucket.org/sammyz/iscream_thunderc-2.6.35-rebase
C | 499 lines | 344 code | 70 blank | 85 comment | 39 complexity | da4e83d11aac96cfe93c180265407c9b MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
  1/*
  2 * arch/arm/mach-orion5x/dns323-setup.c
  3 *
  4 * Copyright (C) 2007 Herbert Valerio Riedel <hvr@gnu.org>
  5 *
  6 * This program is free software; you can redistribute it and/or modify
  7 * it under the terms of the GNU Lesser General Public License as
  8 * published by the Free Software Foundation; either version 2 of the
  9 * License, or (at your option) any later version.
 10 *
 11 */
 12
 13#include <linux/kernel.h>
 14#include <linux/init.h>
 15#include <linux/delay.h>
 16#include <linux/platform_device.h>
 17#include <linux/pci.h>
 18#include <linux/irq.h>
 19#include <linux/mtd/physmap.h>
 20#include <linux/mv643xx_eth.h>
 21#include <linux/leds.h>
 22#include <linux/gpio_keys.h>
 23#include <linux/input.h>
 24#include <linux/i2c.h>
 25#include <linux/ata_platform.h>
 26#include <asm/mach-types.h>
 27#include <asm/gpio.h>
 28#include <asm/mach/arch.h>
 29#include <asm/mach/pci.h>
 30#include <mach/orion5x.h>
 31#include "common.h"
 32#include "mpp.h"
 33
 34#define DNS323_GPIO_LED_RIGHT_AMBER	1
 35#define DNS323_GPIO_LED_LEFT_AMBER	2
 36#define DNS323_GPIO_SYSTEM_UP		3
 37#define DNS323_GPIO_LED_POWER1		4
 38#define DNS323_GPIO_LED_POWER2		5
 39#define DNS323_GPIO_OVERTEMP		6
 40#define DNS323_GPIO_RTC			7
 41#define DNS323_GPIO_POWER_OFF		8
 42#define DNS323_GPIO_KEY_POWER		9
 43#define DNS323_GPIO_KEY_RESET		10
 44
 45/****************************************************************************
 46 * PCI setup
 47 */
 48
 49static int __init dns323_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
 50{
 51	int irq;
 52
 53	/*
 54	 * Check for devices with hard-wired IRQs.
 55	 */
 56	irq = orion5x_pci_map_irq(dev, slot, pin);
 57	if (irq != -1)
 58		return irq;
 59
 60	return -1;
 61}
 62
 63static struct hw_pci dns323_pci __initdata = {
 64	.nr_controllers = 2,
 65	.swizzle	= pci_std_swizzle,
 66	.setup		= orion5x_pci_sys_setup,
 67	.scan		= orion5x_pci_sys_scan_bus,
 68	.map_irq	= dns323_pci_map_irq,
 69};
 70
 71static int __init dns323_dev_id(void)
 72{
 73	u32 dev, rev;
 74
 75	orion5x_pcie_id(&dev, &rev);
 76
 77	return dev;
 78}
 79
 80static int __init dns323_pci_init(void)
 81{
 82	/* The 5182 doesn't really use its PCI bus, and initialising PCI
 83	 * gets in the way of initialising the SATA controller.
 84	 */
 85	if (machine_is_dns323() && dns323_dev_id() != MV88F5182_DEV_ID)
 86		pci_common_init(&dns323_pci);
 87
 88	return 0;
 89}
 90
 91subsys_initcall(dns323_pci_init);
 92
 93/****************************************************************************
 94 * 8MiB NOR flash (Spansion S29GL064M90TFIR4)
 95 *
 96 * Layout as used by D-Link:
 97 *  0x00000000-0x00010000 : "MTD1"
 98 *  0x00010000-0x00020000 : "MTD2"
 99 *  0x00020000-0x001a0000 : "Linux Kernel"
100 *  0x001a0000-0x007d0000 : "File System"
101 *  0x007d0000-0x00800000 : "u-boot"
102 */
103
104#define DNS323_NOR_BOOT_BASE 0xf4000000
105#define DNS323_NOR_BOOT_SIZE SZ_8M
106
107static struct mtd_partition dns323_partitions[] = {
108	{
109		.name	= "MTD1",
110		.size	= 0x00010000,
111		.offset	= 0,
112	}, {
113		.name	= "MTD2",
114		.size	= 0x00010000,
115		.offset = 0x00010000,
116	}, {
117		.name	= "Linux Kernel",
118		.size	= 0x00180000,
119		.offset	= 0x00020000,
120	}, {
121		.name	= "File System",
122		.size	= 0x00630000,
123		.offset	= 0x001A0000,
124	}, {
125		.name	= "u-boot",
126		.size	= 0x00030000,
127		.offset	= 0x007d0000,
128	},
129};
130
131static struct physmap_flash_data dns323_nor_flash_data = {
132	.width		= 1,
133	.parts		= dns323_partitions,
134	.nr_parts	= ARRAY_SIZE(dns323_partitions)
135};
136
137static struct resource dns323_nor_flash_resource = {
138	.flags		= IORESOURCE_MEM,
139	.start		= DNS323_NOR_BOOT_BASE,
140	.end		= DNS323_NOR_BOOT_BASE + DNS323_NOR_BOOT_SIZE - 1,
141};
142
143static struct platform_device dns323_nor_flash = {
144	.name		= "physmap-flash",
145	.id		= 0,
146	.dev		= {
147		.platform_data	= &dns323_nor_flash_data,
148	},
149	.resource	= &dns323_nor_flash_resource,
150	.num_resources	= 1,
151};
152
153/****************************************************************************
154 * Ethernet
155 */
156
157static struct mv643xx_eth_platform_data dns323_eth_data = {
158	.phy_addr = MV643XX_ETH_PHY_ADDR(8),
159};
160
161/* dns323_parse_hex_*() taken from tsx09-common.c; should a common copy of these
162 * functions be kept somewhere?
163 */
164static int __init dns323_parse_hex_nibble(char n)
165{
166	if (n >= '0' && n <= '9')
167		return n - '0';
168
169	if (n >= 'A' && n <= 'F')
170		return n - 'A' + 10;
171
172	if (n >= 'a' && n <= 'f')
173		return n - 'a' + 10;
174
175	return -1;
176}
177
178static int __init dns323_parse_hex_byte(const char *b)
179{
180	int hi;
181	int lo;
182
183	hi = dns323_parse_hex_nibble(b[0]);
184	lo = dns323_parse_hex_nibble(b[1]);
185
186	if (hi < 0 || lo < 0)
187		return -1;
188
189	return (hi << 4) | lo;
190}
191
192static int __init dns323_read_mac_addr(void)
193{
194	u_int8_t addr[6];
195	int i;
196	char *mac_page;
197
198	/* MAC address is stored as a regular ol' string in /dev/mtdblock4
199	 * (0x007d0000-0x00800000) starting at offset 196480 (0x2ff80).
200	 */
201	mac_page = ioremap(DNS323_NOR_BOOT_BASE + 0x7d0000 + 196480, 1024);
202	if (!mac_page)
203		return -ENOMEM;
204
205	/* Sanity check the string we're looking at */
206	for (i = 0; i < 5; i++) {
207		if (*(mac_page + (i * 3) + 2) != ':') {
208			goto error_fail;
209		}
210	}
211
212	for (i = 0; i < 6; i++)	{
213		int byte;
214
215		byte = dns323_parse_hex_byte(mac_page + (i * 3));
216		if (byte < 0) {
217			goto error_fail;
218		}
219
220		addr[i] = byte;
221	}
222
223	iounmap(mac_page);
224	printk("DNS323: Found ethernet MAC address: ");
225	for (i = 0; i < 6; i++)
226		printk("%.2x%s", addr[i], (i < 5) ? ":" : ".\n");
227
228	memcpy(dns323_eth_data.mac_addr, addr, 6);
229
230	return 0;
231
232error_fail:
233	iounmap(mac_page);
234	return -EINVAL;
235}
236
237/****************************************************************************
238 * GPIO LEDs (simple - doesn't use hardware blinking support)
239 */
240
241#define ORION_BLINK_HALF_PERIOD 100 /* ms */
242
243static int dns323_gpio_blink_set(unsigned gpio, int state,
244	unsigned long *delay_on, unsigned long *delay_off)
245{
246
247	if (delay_on && delay_off && !*delay_on && !*delay_off)
248		*delay_on = *delay_off = ORION_BLINK_HALF_PERIOD;
249
250	switch(state) {
251	case GPIO_LED_NO_BLINK_LOW:
252	case GPIO_LED_NO_BLINK_HIGH:
253		orion_gpio_set_blink(gpio, 0);
254		gpio_set_value(gpio, state);
255		break;
256	case GPIO_LED_BLINK:
257		orion_gpio_set_blink(gpio, 1);
258	}
259	return 0;
260}
261
262static struct gpio_led dns323_leds[] = {
263	{
264		.name = "power:blue",
265		.gpio = DNS323_GPIO_LED_POWER2,
266		.default_trigger = "timer",
267		.active_low = 1,
268	}, {
269		.name = "right:amber",
270		.gpio = DNS323_GPIO_LED_RIGHT_AMBER,
271		.active_low = 1,
272	}, {
273		.name = "left:amber",
274		.gpio = DNS323_GPIO_LED_LEFT_AMBER,
275		.active_low = 1,
276	},
277};
278
279static struct gpio_led_platform_data dns323_led_data = {
280	.num_leds	= ARRAY_SIZE(dns323_leds),
281	.leds		= dns323_leds,
282	.gpio_blink_set = dns323_gpio_blink_set,
283};
284
285static struct platform_device dns323_gpio_leds = {
286	.name		= "leds-gpio",
287	.id		= -1,
288	.dev		= {
289		.platform_data	= &dns323_led_data,
290	},
291};
292
293/****************************************************************************
294 * GPIO Attached Keys
295 */
296
297static struct gpio_keys_button dns323_buttons[] = {
298	{
299		.code		= KEY_RESTART,
300		.gpio		= DNS323_GPIO_KEY_RESET,
301		.desc		= "Reset Button",
302		.active_low	= 1,
303	}, {
304		.code		= KEY_POWER,
305		.gpio		= DNS323_GPIO_KEY_POWER,
306		.desc		= "Power Button",
307		.active_low	= 1,
308	},
309};
310
311static struct gpio_keys_platform_data dns323_button_data = {
312	.buttons	= dns323_buttons,
313	.nbuttons	= ARRAY_SIZE(dns323_buttons),
314};
315
316static struct platform_device dns323_button_device = {
317	.name		= "gpio-keys",
318	.id		= -1,
319	.num_resources	= 0,
320	.dev		= {
321		.platform_data	= &dns323_button_data,
322	},
323};
324
325/*****************************************************************************
326 * SATA
327 */
328static struct mv_sata_platform_data dns323_sata_data = {
329       .n_ports        = 2,
330};
331
332/****************************************************************************
333 * General Setup
334 */
335static struct orion5x_mpp_mode dns323_mv88f5181_mpp_modes[] __initdata = {
336	{  0, MPP_PCIE_RST_OUTn },
337	{  1, MPP_GPIO },		/* right amber LED (sata ch0) */
338	{  2, MPP_GPIO },		/* left amber LED (sata ch1) */
339	{  3, MPP_UNUSED },
340	{  4, MPP_GPIO },		/* power button LED */
341	{  5, MPP_GPIO },		/* power button LED */
342	{  6, MPP_GPIO },		/* GMT G751-2f overtemp */
343	{  7, MPP_GPIO },		/* M41T80 nIRQ/OUT/SQW */
344	{  8, MPP_GPIO },		/* triggers power off */
345	{  9, MPP_GPIO },		/* power button switch */
346	{ 10, MPP_GPIO },		/* reset button switch */
347	{ 11, MPP_UNUSED },
348	{ 12, MPP_UNUSED },
349	{ 13, MPP_UNUSED },
350	{ 14, MPP_UNUSED },
351	{ 15, MPP_UNUSED },
352	{ 16, MPP_UNUSED },
353	{ 17, MPP_UNUSED },
354	{ 18, MPP_UNUSED },
355	{ 19, MPP_UNUSED },
356	{ -1 },
357};
358
359static struct orion5x_mpp_mode dns323_mv88f5182_mpp_modes[] __initdata = {
360	{  0, MPP_UNUSED },
361	{  1, MPP_GPIO },		/* right amber LED (sata ch0) */
362	{  2, MPP_GPIO },		/* left amber LED (sata ch1) */
363	{  3, MPP_GPIO },		/* system up flag */
364	{  4, MPP_GPIO },		/* power button LED */
365	{  5, MPP_GPIO },		/* power button LED */
366	{  6, MPP_GPIO },		/* GMT G751-2f overtemp */
367	{  7, MPP_GPIO },		/* M41T80 nIRQ/OUT/SQW */
368	{  8, MPP_GPIO },		/* triggers power off */
369	{  9, MPP_GPIO },		/* power button switch */
370	{ 10, MPP_GPIO },		/* reset button switch */
371	{ 11, MPP_UNUSED },
372	{ 12, MPP_SATA_LED },
373	{ 13, MPP_SATA_LED },
374	{ 14, MPP_SATA_LED },
375	{ 15, MPP_SATA_LED },
376	{ 16, MPP_UNUSED },
377	{ 17, MPP_UNUSED },
378	{ 18, MPP_UNUSED },
379	{ 19, MPP_UNUSED },
380	{ -1 },
381};
382
383/*
384 * On the DNS-323 the following devices are attached via I2C:
385 *
386 *  i2c addr | chip        | description
387 *  0x3e     | GMT G760Af  | fan speed PWM controller
388 *  0x48     | GMT G751-2f | temp. sensor and therm. watchdog (LM75 compatible)
389 *  0x68     | ST M41T80   | RTC w/ alarm
390 */
391static struct i2c_board_info __initdata dns323_i2c_devices[] = {
392	{
393		I2C_BOARD_INFO("g760a", 0x3e),
394	}, {
395		I2C_BOARD_INFO("lm75", 0x48),
396	}, {
397		I2C_BOARD_INFO("m41t80", 0x68),
398	},
399};
400
401/* DNS-323 rev. A specific power off method */
402static void dns323a_power_off(void)
403{
404	pr_info("%s: triggering power-off...\n", __func__);
405	gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
406}
407
408/* DNS-323 rev B specific power off method */
409static void dns323b_power_off(void)
410{
411	pr_info("%s: triggering power-off...\n", __func__);
412	/* Pin has to be changed to 1 and back to 0 to do actual power off. */
413	gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
414	mdelay(100);
415	gpio_set_value(DNS323_GPIO_POWER_OFF, 0);
416}
417
418static void __init dns323_init(void)
419{
420	/* Setup basic Orion functions. Need to be called early. */
421	orion5x_init();
422
423	/* Just to be tricky, the 5182 has a completely different
424	 * set of MPP modes to the 5181.
425	 */
426	if (dns323_dev_id() == MV88F5182_DEV_ID)
427		orion5x_mpp_conf(dns323_mv88f5182_mpp_modes);
428	else {
429		orion5x_mpp_conf(dns323_mv88f5181_mpp_modes);
430		writel(0, MPP_DEV_CTRL);		/* DEV_D[31:16] */
431	}
432
433	/* setup flash mapping
434	 * CS3 holds a 8 MB Spansion S29GL064M90TFIR4
435	 */
436	orion5x_setup_dev_boot_win(DNS323_NOR_BOOT_BASE, DNS323_NOR_BOOT_SIZE);
437	platform_device_register(&dns323_nor_flash);
438
439	/* The 5181 power LED is active low and requires
440	 * DNS323_GPIO_LED_POWER1 to also be low.
441	 */
442	if (dns323_dev_id() == MV88F5181_DEV_ID) {
443		dns323_leds[0].active_low = 1;
444		gpio_request(DNS323_GPIO_LED_POWER1, "Power Led Enable");
445		gpio_direction_output(DNS323_GPIO_LED_POWER1, 0);
446	}
447
448	platform_device_register(&dns323_gpio_leds);
449
450	platform_device_register(&dns323_button_device);
451
452	i2c_register_board_info(0, dns323_i2c_devices,
453				ARRAY_SIZE(dns323_i2c_devices));
454
455	/*
456	 * Configure peripherals.
457	 */
458	if (dns323_read_mac_addr() < 0)
459		printk("DNS323: Failed to read MAC address\n");
460
461	orion5x_ehci0_init();
462	orion5x_eth_init(&dns323_eth_data);
463	orion5x_i2c_init();
464	orion5x_uart0_init();
465
466	/* The 5182 has its SATA controller on-chip, and needs its own little
467	 * init routine.
468	 */
469	if (dns323_dev_id() == MV88F5182_DEV_ID)
470		orion5x_sata_init(&dns323_sata_data);
471
472	/* The 5182 has flag to indicate the system is up. Without this flag
473	 * set, power LED will flash and cannot be controlled via leds-gpio.
474	 */
475	if (dns323_dev_id() == MV88F5182_DEV_ID)
476		gpio_set_value(DNS323_GPIO_SYSTEM_UP, 1);
477
478	/* Register dns323 specific power-off method */
479	if (gpio_request(DNS323_GPIO_POWER_OFF, "POWEROFF") != 0 ||
480	    gpio_direction_output(DNS323_GPIO_POWER_OFF, 0) != 0)
481		pr_err("DNS323: failed to setup power-off GPIO\n");
482	if (dns323_dev_id() == MV88F5182_DEV_ID)
483		pm_power_off = dns323b_power_off;
484	else
485		pm_power_off = dns323a_power_off;
486}
487
488/* Warning: D-Link uses a wrong mach-type (=526) in their bootloader */
489MACHINE_START(DNS323, "D-Link DNS-323")
490	/* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
491	.phys_io	= ORION5X_REGS_PHYS_BASE,
492	.io_pg_offst	= ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
493	.boot_params	= 0x00000100,
494	.init_machine	= dns323_init,
495	.map_io		= orion5x_map_io,
496	.init_irq	= orion5x_init_irq,
497	.timer		= &orion5x_timer,
498	.fixup		= tag_fixup_mem32,
499MACHINE_END