1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * linux/arch/arm/mach-sa1100/badge4.c
4 *
5 * BadgePAD 4 specific initialization
6 *
7 *   Tim Connors <connors@hpl.hp.com>
8 *   Christopher Hoover <ch@hpl.hp.com>
9 *
10 * Copyright (C) 2002 Hewlett-Packard Company
11 */
12#include <linux/module.h>
13#include <linux/init.h>
14#include <linux/kernel.h>
15#include <linux/platform_data/sa11x0-serial.h>
16#include <linux/platform_device.h>
17#include <linux/delay.h>
18#include <linux/tty.h>
19#include <linux/mtd/mtd.h>
20#include <linux/mtd/partitions.h>
21#include <linux/errno.h>
22#include <linux/gpio.h>
23#include <linux/leds.h>
24
25#include <mach/hardware.h>
26#include <asm/mach-types.h>
27#include <asm/setup.h>
28#include <mach/irqs.h>
29
30#include <asm/mach/arch.h>
31#include <asm/mach/flash.h>
32#include <asm/mach/map.h>
33#include <asm/hardware/sa1111.h>
34
35#include <mach/badge4.h>
36
37#include "generic.h"
38
39static struct resource sa1111_resources[] = {
40	[0] = DEFINE_RES_MEM(BADGE4_SA1111_BASE, 0x2000),
41	[1] = DEFINE_RES_IRQ(BADGE4_IRQ_GPIO_SA1111),
42};
43
44static int badge4_sa1111_enable(void *data, unsigned devid)
45{
46	if (devid == SA1111_DEVID_USB)
47		badge4_set_5V(BADGE4_5V_USB, 1);
48	return 0;
49}
50
51static void badge4_sa1111_disable(void *data, unsigned devid)
52{
53	if (devid == SA1111_DEVID_USB)
54		badge4_set_5V(BADGE4_5V_USB, 0);
55}
56
57static struct sa1111_platform_data sa1111_info = {
58	.disable_devs	= SA1111_DEVID_PS2_MSE,
59	.enable		= badge4_sa1111_enable,
60	.disable	= badge4_sa1111_disable,
61};
62
63static u64 sa1111_dmamask = 0xffffffffUL;
64
65static struct platform_device sa1111_device = {
66	.name		= "sa1111",
67	.id		= 0,
68	.dev		= {
69		.dma_mask = &sa1111_dmamask,
70		.coherent_dma_mask = 0xffffffff,
71		.platform_data = &sa1111_info,
72	},
73	.num_resources	= ARRAY_SIZE(sa1111_resources),
74	.resource	= sa1111_resources,
75};
76
77/* LEDs */
78struct gpio_led badge4_gpio_leds[] = {
79	{
80		.name			= "badge4:red",
81		.default_trigger	= "heartbeat",
82		.gpio			= 7,
83	},
84	{
85		.name			= "badge4:green",
86		.default_trigger	= "cpu0",
87		.gpio			= 9,
88	},
89};
90
91static struct gpio_led_platform_data badge4_gpio_led_info = {
92	.leds		= badge4_gpio_leds,
93	.num_leds	= ARRAY_SIZE(badge4_gpio_leds),
94};
95
96static struct platform_device badge4_leds = {
97	.name	= "leds-gpio",
98	.id	= -1,
99	.dev	= {
100		.platform_data	= &badge4_gpio_led_info,
101	}
102};
103
104static struct platform_device *devices[] __initdata = {
105	&sa1111_device,
106	&badge4_leds,
107};
108
109static int __init badge4_sa1111_init(void)
110{
111	/*
112	 * Ensure that the memory bus request/grant signals are setup,
113	 * and the grant is held in its inactive state
114	 */
115	sa1110_mb_disable();
116
117	/*
118	 * Probe for SA1111.
119	 */
120	return platform_add_devices(devices, ARRAY_SIZE(devices));
121}
122
123
124/*
125 * 1 x Intel 28F320C3 Advanced+ Boot Block Flash (32 Mi bit)
126 *   Eight 4 KiW Parameter Bottom Blocks (64 KiB)
127 *   Sixty-three 32 KiW Main Blocks (4032 Ki b)
128 *
129 * <or>
130 *
131 * 1 x Intel 28F640C3 Advanced+ Boot Block Flash (64 Mi bit)
132 *   Eight 4 KiW Parameter Bottom Blocks (64 KiB)
133 *   One-hundred-twenty-seven 32 KiW Main Blocks (8128 Ki b)
134 */
135static struct mtd_partition badge4_partitions[] = {
136	{
137		.name	= "BLOB boot loader",
138		.offset	= 0,
139		.size	= 0x0000A000
140	}, {
141		.name	= "params",
142		.offset	= MTDPART_OFS_APPEND,
143		.size	= 0x00006000
144	}, {
145		.name	= "root",
146		.offset	= MTDPART_OFS_APPEND,
147		.size	= MTDPART_SIZ_FULL
148	}
149};
150
151static struct flash_platform_data badge4_flash_data = {
152	.map_name	= "cfi_probe",
153	.parts		= badge4_partitions,
154	.nr_parts	= ARRAY_SIZE(badge4_partitions),
155};
156
157static struct resource badge4_flash_resource =
158	DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_64M);
159
160static int five_v_on __initdata = 0;
161
162static int __init five_v_on_setup(char *ignore)
163{
164	five_v_on = 1;
165	return 1;
166}
167__setup("five_v_on", five_v_on_setup);
168
169
170static int __init badge4_init(void)
171{
172	int ret;
173
174	if (!machine_is_badge4())
175		return -ENODEV;
176
177	/* LCD */
178	GPCR  = (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 |
179		 BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 |
180		 BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 |
181		 BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 |
182		 BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID |
183		 BADGE4_GPIO_GPC_VID);
184	GPDR &= ~BADGE4_GPIO_INT_VID;
185	GPDR |= (BADGE4_GPIO_LGP2 | BADGE4_GPIO_LGP3 |
186		 BADGE4_GPIO_LGP4 | BADGE4_GPIO_LGP5 |
187		 BADGE4_GPIO_LGP6 | BADGE4_GPIO_LGP7 |
188		 BADGE4_GPIO_LGP8 | BADGE4_GPIO_LGP9 |
189		 BADGE4_GPIO_GPA_VID | BADGE4_GPIO_GPB_VID |
190		 BADGE4_GPIO_GPC_VID);
191
192	/* SDRAM SPD i2c */
193	GPCR  = (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL);
194	GPDR |= (BADGE4_GPIO_SDSDA | BADGE4_GPIO_SDSCL);
195
196	/* uart */
197	GPCR  = (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2);
198	GPDR |= (BADGE4_GPIO_UART_HS1 | BADGE4_GPIO_UART_HS2);
199
200	/* CPLD muxsel0 input for mux/adc chip select */
201	GPCR  = BADGE4_GPIO_MUXSEL0;
202	GPDR |= BADGE4_GPIO_MUXSEL0;
203
204	/* test points: J5, J6 as inputs, J7 outputs */
205	GPDR &= ~(BADGE4_GPIO_TESTPT_J5 | BADGE4_GPIO_TESTPT_J6);
206	GPCR  = BADGE4_GPIO_TESTPT_J7;
207	GPDR |= BADGE4_GPIO_TESTPT_J7;
208
209	/* 5V supply rail. */
210	GPCR  = BADGE4_GPIO_PCMEN5V;		/* initially off */
211	GPDR |= BADGE4_GPIO_PCMEN5V;
212
213	/* CPLD sdram type inputs; set up by blob */
214	//GPDR |= (BADGE4_GPIO_SDTYP1 | BADGE4_GPIO_SDTYP0);
215	printk(KERN_DEBUG __FILE__ ": SDRAM CPLD typ1=%d typ0=%d\n",
216		!!(GPLR & BADGE4_GPIO_SDTYP1),
217		!!(GPLR & BADGE4_GPIO_SDTYP0));
218
219	/* SA1111 reset pin; set up by blob */
220	//GPSR  = BADGE4_GPIO_SA1111_NRST;
221	//GPDR |= BADGE4_GPIO_SA1111_NRST;
222
223
224	/* power management cruft */
225	PGSR = 0;
226	PWER = 0;
227	PCFR = 0;
228	PSDR = 0;
229
230	PWER |= PWER_GPIO26;	/* wake up on an edge from TESTPT_J5 */
231	PWER |= PWER_RTC;	/* wake up if rtc fires */
232
233	/* drive sa1111_nrst during sleep */
234	PGSR |= BADGE4_GPIO_SA1111_NRST;
235	/* drive CPLD as is during sleep */
236	PGSR |= (GPLR & (BADGE4_GPIO_SDTYP0|BADGE4_GPIO_SDTYP1));
237
238
239	/* Now bring up the SA-1111. */
240	ret = badge4_sa1111_init();
241	if (ret < 0)
242		printk(KERN_ERR
243			"%s: SA-1111 initialization failed (%d)\n",
244			__func__, ret);
245
246
247	/* maybe turn on 5v0 from the start */
248	badge4_set_5V(BADGE4_5V_INITIALLY, five_v_on);
249
250	sa11x0_register_mtd(&badge4_flash_data, &badge4_flash_resource, 1);
251
252	return 0;
253}
254
255arch_initcall(badge4_init);
256
257
258static unsigned badge4_5V_bitmap = 0;
259
260void badge4_set_5V(unsigned subsystem, int on)
261{
262	unsigned long flags;
263	unsigned old_5V_bitmap;
264
265	local_irq_save(flags);
266
267	old_5V_bitmap = badge4_5V_bitmap;
268
269	if (on) {
270		badge4_5V_bitmap |= subsystem;
271	} else {
272		badge4_5V_bitmap &= ~subsystem;
273	}
274
275	/* detect on->off and off->on transitions */
276	if ((!old_5V_bitmap) && (badge4_5V_bitmap)) {
277		/* was off, now on */
278		printk(KERN_INFO "%s: enabling 5V supply rail\n", __func__);
279		GPSR = BADGE4_GPIO_PCMEN5V;
280	} else if ((old_5V_bitmap) && (!badge4_5V_bitmap)) {
281		/* was on, now off */
282		printk(KERN_INFO "%s: disabling 5V supply rail\n", __func__);
283		GPCR = BADGE4_GPIO_PCMEN5V;
284	}
285
286	local_irq_restore(flags);
287}
288EXPORT_SYMBOL(badge4_set_5V);
289
290
291static struct map_desc badge4_io_desc[] __initdata = {
292	{	/* SRAM  bank 1 */
293		.virtual	= 0xf1000000,
294		.pfn		= __phys_to_pfn(0x08000000),
295		.length		= 0x00100000,
296		.type		= MT_DEVICE
297	}, {	/* SRAM  bank 2 */
298		.virtual	= 0xf2000000,
299		.pfn		= __phys_to_pfn(0x10000000),
300		.length		= 0x00100000,
301		.type		= MT_DEVICE
302	}
303};
304
305static void
306badge4_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
307{
308	if (!state) {
309		Ser1SDCR0 |= SDCR0_UART;
310	}
311}
312
313static struct sa1100_port_fns badge4_port_fns __initdata = {
314	.pm		= badge4_uart_pm,
315};
316
317static void __init badge4_map_io(void)
318{
319	sa1100_map_io();
320	iotable_init(badge4_io_desc, ARRAY_SIZE(badge4_io_desc));
321
322	sa1100_register_uart_fns(&badge4_port_fns);
323	sa1100_register_uart(0, 3);
324	sa1100_register_uart(1, 1);
325}
326
327MACHINE_START(BADGE4, "Hewlett-Packard Laboratories BadgePAD 4")
328	.atag_offset	= 0x100,
329	.map_io		= badge4_map_io,
330	.nr_irqs	= SA1100_NR_IRQS,
331	.init_irq	= sa1100_init_irq,
332	.init_late	= sa11x0_init_late,
333	.init_time	= sa1100_timer_init,
334#ifdef CONFIG_SA1111
335	.dma_zone_size	= SZ_1M,
336#endif
337	.restart	= sa11x0_restart,
338MACHINE_END
339