1/*
2 * linux/arch/arm/mach-sa1100/badge4.c
3 *
4 * BadgePAD 4 specific initialization
5 *
6 *   Tim Connors <connors@hpl.hp.com>
7 *   Christopher Hoover <ch@hpl.hp.com>
8 *
9 * Copyright (C) 2002 Hewlett-Packard Company
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 version 2 as
13 * published by the Free Software Foundation.
14 *
15 */
16#include <linux/module.h>
17#include <linux/init.h>
18#include <linux/kernel.h>
19#include <linux/platform_data/sa11x0-serial.h>
20#include <linux/platform_device.h>
21#include <linux/delay.h>
22#include <linux/tty.h>
23#include <linux/mtd/mtd.h>
24#include <linux/mtd/partitions.h>
25#include <linux/errno.h>
26#include <linux/gpio.h>
27#include <linux/leds.h>
28
29#include <mach/hardware.h>
30#include <asm/mach-types.h>
31#include <asm/setup.h>
32#include <mach/irqs.h>
33
34#include <asm/mach/arch.h>
35#include <asm/mach/flash.h>
36#include <asm/mach/map.h>
37#include <asm/hardware/sa1111.h>
38
39#include <mach/badge4.h>
40
41#include "generic.h"
42
43static struct resource sa1111_resources[] = {
44	[0] = DEFINE_RES_MEM(BADGE4_SA1111_BASE, 0x2000),
45	[1] = DEFINE_RES_IRQ(BADGE4_IRQ_GPIO_SA1111),
46};
47
48static int badge4_sa1111_enable(void *data, unsigned devid)
49{
50	if (devid == SA1111_DEVID_USB)
51		badge4_set_5V(BADGE4_5V_USB, 1);
52	return 0;
53}
54
55static void badge4_sa1111_disable(void *data, unsigned devid)
56{
57	if (devid == SA1111_DEVID_USB)
58		badge4_set_5V(BADGE4_5V_USB, 0);
59}
60
61static struct sa1111_platform_data sa1111_info = {
62	.disable_devs	= SA1111_DEVID_PS2_MSE,
63	.enable		= badge4_sa1111_enable,
64	.disable	= badge4_sa1111_disable,
65};
66
67static u64 sa1111_dmamask = 0xffffffffUL;
68
69static struct platform_device sa1111_device = {
70	.name		= "sa1111",
71	.id		= 0,
72	.dev		= {
73		.dma_mask = &sa1111_dmamask,
74		.coherent_dma_mask = 0xffffffff,
75		.platform_data = &sa1111_info,
76	},
77	.num_resources	= ARRAY_SIZE(sa1111_resources),
78	.resource	= sa1111_resources,
79};
80
81/* LEDs */
82struct gpio_led badge4_gpio_leds[] = {
83	{
84		.name			= "badge4:red",
85		.default_trigger	= "heartbeat",
86		.gpio			= 7,
87	},
88	{
89		.name			= "badge4:green",
90		.default_trigger	= "cpu0",
91		.gpio			= 9,
92	},
93};
94
95static struct gpio_led_platform_data badge4_gpio_led_info = {
96	.leds		= badge4_gpio_leds,
97	.num_leds	= ARRAY_SIZE(badge4_gpio_leds),
98};
99
100static struct platform_device badge4_leds = {
101	.name	= "leds-gpio",
102	.id	= -1,
103	.dev	= {
104		.platform_data	= &badge4_gpio_led_info,
105	}
106};
107
108static struct platform_device *devices[] __initdata = {
109	&sa1111_device,
110	&badge4_leds,
111};
112
113static int __init badge4_sa1111_init(void)
114{
115	/*
116	 * Ensure that the memory bus request/grant signals are setup,
117	 * and the grant is held in its inactive state
118	 */
119	sa1110_mb_disable();
120
121	/*
122	 * Probe for SA1111.
123	 */
124	return platform_add_devices(devices, ARRAY_SIZE(devices));
125}
126
127
128/*
129 * 1 x Intel 28F320C3 Advanced+ Boot Block Flash (32 Mi bit)
130 *   Eight 4 KiW Parameter Bottom Blocks (64 KiB)
131 *   Sixty-three 32 KiW Main Blocks (4032 Ki b)
132 *
133 * <or>
134 *
135 * 1 x Intel 28F640C3 Advanced+ Boot Block Flash (64 Mi bit)
136 *   Eight 4 KiW Parameter Bottom Blocks (64 KiB)
137 *   One-hundred-twenty-seven 32 KiW Main Blocks (8128 Ki b)
138 */
139static struct mtd_partition badge4_partitions[] = {
140	{
141		.name	= "BLOB boot loader",
142		.offset	= 0,
143		.size	= 0x0000A000
144	}, {
145		.name	= "params",
146		.offset	= MTDPART_OFS_APPEND,
147		.size	= 0x00006000
148	}, {
149		.name	= "root",
150		.offset	= MTDPART_OFS_APPEND,
151		.size	= MTDPART_SIZ_FULL
152	}
153};
154
155static struct flash_platform_data badge4_flash_data = {
156	.map_name	= "cfi_probe",
157	.parts		= badge4_partitions,
158	.nr_parts	= ARRAY_SIZE(badge4_partitions),
159};
160
161static struct resource badge4_flash_resource =
162	DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_64M);
163
164static int five_v_on __initdata = 0;
165
166static int __init five_v_on_setup(char *ignore)
167{
168	five_v_on = 1;
169	return 1;
170}
171__setup("five_v_on", five_v_on_setup);
172
173
174static int __init badge4_init(void)
175{
176	int ret;
177
178	if (!machine_is_badge4())
179		return -ENODEV;
180
181	/* LCD */
182	GPCR  = (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 |
183		 BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 |
184		 BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 |
185		 BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 |
186		 BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID |
187		 BADGE4_GPIO_GPC_VID);
188	GPDR &= ~BADGE4_GPIO_INT_VID;
189	GPDR |= (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 |
190		 BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 |
191		 BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 |
192		 BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 |
193		 BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID |
194		 BADGE4_GPIO_GPC_VID);
195
196	/* SDRAM SPD i2c */
197	GPCR  = (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL);
198	GPDR |= (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL);
199
200	/* uart */
201	GPCR  = (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2);
202	GPDR |= (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2);
203
204	/* CPLD muxsel0 input for mux/adc chip select */
205	GPCR  = BADGE4_GPIO_MUXSEL0;
206	GPDR |= BADGE4_GPIO_MUXSEL0;
207
208	/* test points: J5, J6 as inputs, J7 outputs */
209	GPDR &= ~(BADGE4_GPIO_TESTPT_J5 | BADGE4_GPIO_TESTPT_J6);
210	GPCR  = BADGE4_GPIO_TESTPT_J7;
211	GPDR |= BADGE4_GPIO_TESTPT_J7;
212
213	/* 5V supply rail. */
214	GPCR  = BADGE4_GPIO_PCMEN5V;		/* initially off */
215	GPDR |= BADGE4_GPIO_PCMEN5V;
216
217	/* CPLD sdram type inputs; set up by blob */
218	//GPDR |= (BADGE4_GPIO_SDTYP1 | BADGE4_GPIO_SDTYP0);
219	printk(KERN_DEBUG __FILE__ ": SDRAM CPLD typ1=%d typ0=%d\n",
220		!!(GPLR & BADGE4_GPIO_SDTYP1),
221		!!(GPLR & BADGE4_GPIO_SDTYP0));
222
223	/* SA1111 reset pin; set up by blob */
224	//GPSR  = BADGE4_GPIO_SA1111_NRST;
225	//GPDR |= BADGE4_GPIO_SA1111_NRST;
226
227
228	/* power management cruft */
229	PGSR = 0;
230	PWER = 0;
231	PCFR = 0;
232	PSDR = 0;
233
234	PWER |= PWER_GPIO26;	/* wake up on an edge from TESTPT_J5 */
235	PWER |= PWER_RTC;	/* wake up if rtc fires */
236
237	/* drive sa1111_nrst during sleep */
238	PGSR |= BADGE4_GPIO_SA1111_NRST;
239	/* drive CPLD as is during sleep */
240	PGSR |= (GPLR & (BADGE4_GPIO_SDTYP0|BADGE4_GPIO_SDTYP1));
241
242
243	/* Now bring up the SA-1111. */
244	ret = badge4_sa1111_init();
245	if (ret < 0)
246		printk(KERN_ERR
247			"%s: SA-1111 initialization failed (%d)\n",
248			__func__, ret);
249
250
251	/* maybe turn on 5v0 from the start */
252	badge4_set_5V(BADGE4_5V_INITIALLY, five_v_on);
253
254	sa11x0_register_mtd(&badge4_flash_data, &badge4_flash_resource, 1);
255
256	return 0;
257}
258
259arch_initcall(badge4_init);
260
261
262static unsigned badge4_5V_bitmap = 0;
263
264void badge4_set_5V(unsigned subsystem, int on)
265{
266	unsigned long flags;
267	unsigned old_5V_bitmap;
268
269	local_irq_save(flags);
270
271	old_5V_bitmap = badge4_5V_bitmap;
272
273	if (on) {
274		badge4_5V_bitmap |= subsystem;
275	} else {
276		badge4_5V_bitmap &= ~subsystem;
277	}
278
279	/* detect on->off and off->on transitions */
280	if ((!old_5V_bitmap) && (badge4_5V_bitmap)) {
281		/* was off, now on */
282		printk(KERN_INFO "%s: enabling 5V supply rail\n", __func__);
283		GPSR = BADGE4_GPIO_PCMEN5V;
284	} else if ((old_5V_bitmap) && (!badge4_5V_bitmap)) {
285		/* was on, now off */
286		printk(KERN_INFO "%s: disabling 5V supply rail\n", __func__);
287		GPCR = BADGE4_GPIO_PCMEN5V;
288	}
289
290	local_irq_restore(flags);
291}
292EXPORT_SYMBOL(badge4_set_5V);
293
294
295static struct map_desc badge4_io_desc[] __initdata = {
296	{	/* SRAM  bank 1 */
297		.virtual	= 0xf1000000,
298		.pfn		= __phys_to_pfn(0x08000000),
299		.length		= 0x00100000,
300		.type		= MT_DEVICE
301	}, {	/* SRAM  bank 2 */
302		.virtual	= 0xf2000000,
303		.pfn		= __phys_to_pfn(0x10000000),
304		.length		= 0x00100000,
305		.type		= MT_DEVICE
306	}
307};
308
309static void
310badge4_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
311{
312	if (!state) {
313		Ser1SDCR0 |= SDCR0_UART;
314	}
315}
316
317static struct sa1100_port_fns badge4_port_fns __initdata = {
318	//.get_mctrl	= badge4_get_mctrl,
319	//.set_mctrl	= badge4_set_mctrl,
320	.pm		= badge4_uart_pm,
321};
322
323static void __init badge4_map_io(void)
324{
325	sa1100_map_io();
326	iotable_init(badge4_io_desc, ARRAY_SIZE(badge4_io_desc));
327
328	sa1100_register_uart_fns(&badge4_port_fns);
329	sa1100_register_uart(0, 3);
330	sa1100_register_uart(1, 1);
331}
332
333MACHINE_START(BADGE4, "Hewlett-Packard Laboratories BadgePAD 4")
334	.atag_offset	= 0x100,
335	.map_io		= badge4_map_io,
336	.nr_irqs	= SA1100_NR_IRQS,
337	.init_irq	= sa1100_init_irq,
338	.init_late	= sa11x0_init_late,
339	.init_time	= sa1100_timer_init,
340#ifdef CONFIG_SA1111
341	.dma_zone_size	= SZ_1M,
342#endif
343	.restart	= sa11x0_restart,
344MACHINE_END
345