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
39 static struct resource sa1111_resources[] = {
40 [0] = DEFINE_RES_MEM(BADGE4_SA1111_BASE, 0x2000),
41 [1] = DEFINE_RES_IRQ(BADGE4_IRQ_GPIO_SA1111),
42 };
43
badge4_sa1111_enable(void * data,unsigned devid)44 static 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
badge4_sa1111_disable(void * data,unsigned devid)51 static 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
57 static 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
63 static u64 sa1111_dmamask = 0xffffffffUL;
64
65 static 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 */
78 struct 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
91 static struct gpio_led_platform_data badge4_gpio_led_info = {
92 .leds = badge4_gpio_leds,
93 .num_leds = ARRAY_SIZE(badge4_gpio_leds),
94 };
95
96 static struct platform_device badge4_leds = {
97 .name = "leds-gpio",
98 .id = -1,
99 .dev = {
100 .platform_data = &badge4_gpio_led_info,
101 }
102 };
103
104 static struct platform_device *devices[] __initdata = {
105 &sa1111_device,
106 &badge4_leds,
107 };
108
badge4_sa1111_init(void)109 static 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 */
135 static 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
151 static 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
157 static struct resource badge4_flash_resource =
158 DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_64M);
159
160 static int five_v_on __initdata = 0;
161
five_v_on_setup(char * ignore)162 static 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
badge4_init(void)170 static 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
255 arch_initcall(badge4_init);
256
257
258 static unsigned badge4_5V_bitmap = 0;
259
badge4_set_5V(unsigned subsystem,int on)260 void 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 }
288 EXPORT_SYMBOL(badge4_set_5V);
289
290
291 static 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
305 static void
badge4_uart_pm(struct uart_port * port,u_int state,u_int oldstate)306 badge4_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
307 {
308 if (!state) {
309 Ser1SDCR0 |= SDCR0_UART;
310 }
311 }
312
313 static struct sa1100_port_fns badge4_port_fns __initdata = {
314 .pm = badge4_uart_pm,
315 };
316
badge4_map_io(void)317 static 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
327 MACHINE_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,
338 MACHINE_END
339