1 /*
2 * linux/arch/arm/mach-sa1100/simpad.c
3 */
4
5 #include <linux/module.h>
6 #include <linux/init.h>
7 #include <linux/kernel.h>
8 #include <linux/tty.h>
9 #include <linux/proc_fs.h>
10 #include <linux/string.h>
11 #include <linux/pm.h>
12 #include <linux/platform_data/sa11x0-serial.h>
13 #include <linux/platform_device.h>
14 #include <linux/mfd/ucb1x00.h>
15 #include <linux/mtd/mtd.h>
16 #include <linux/mtd/partitions.h>
17 #include <linux/io.h>
18 #include <linux/gpio.h>
19
20 #include <mach/hardware.h>
21 #include <asm/setup.h>
22 #include <asm/irq.h>
23
24 #include <asm/mach-types.h>
25 #include <asm/mach/arch.h>
26 #include <asm/mach/flash.h>
27 #include <asm/mach/map.h>
28 #include <linux/platform_data/mfd-mcp-sa11x0.h>
29 #include <mach/simpad.h>
30 #include <mach/irqs.h>
31
32 #include <linux/serial_core.h>
33 #include <linux/ioport.h>
34 #include <linux/input.h>
35 #include <linux/gpio_keys.h>
36 #include <linux/leds.h>
37 #include <linux/i2c-gpio.h>
38
39 #include "generic.h"
40
41 /*
42 * CS3 support
43 */
44
45 static long cs3_shadow;
46 static spinlock_t cs3_lock;
47 static struct gpio_chip cs3_gpio;
48
simpad_get_cs3_ro(void)49 long simpad_get_cs3_ro(void)
50 {
51 return readl(CS3_BASE);
52 }
53 EXPORT_SYMBOL(simpad_get_cs3_ro);
54
simpad_get_cs3_shadow(void)55 long simpad_get_cs3_shadow(void)
56 {
57 return cs3_shadow;
58 }
59 EXPORT_SYMBOL(simpad_get_cs3_shadow);
60
__simpad_write_cs3(void)61 static void __simpad_write_cs3(void)
62 {
63 writel(cs3_shadow, CS3_BASE);
64 }
65
simpad_set_cs3_bit(int value)66 void simpad_set_cs3_bit(int value)
67 {
68 unsigned long flags;
69
70 spin_lock_irqsave(&cs3_lock, flags);
71 cs3_shadow |= value;
72 __simpad_write_cs3();
73 spin_unlock_irqrestore(&cs3_lock, flags);
74 }
75 EXPORT_SYMBOL(simpad_set_cs3_bit);
76
simpad_clear_cs3_bit(int value)77 void simpad_clear_cs3_bit(int value)
78 {
79 unsigned long flags;
80
81 spin_lock_irqsave(&cs3_lock, flags);
82 cs3_shadow &= ~value;
83 __simpad_write_cs3();
84 spin_unlock_irqrestore(&cs3_lock, flags);
85 }
86 EXPORT_SYMBOL(simpad_clear_cs3_bit);
87
cs3_gpio_set(struct gpio_chip * chip,unsigned offset,int value)88 static void cs3_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
89 {
90 if (offset > 15)
91 return;
92 if (value)
93 simpad_set_cs3_bit(1 << offset);
94 else
95 simpad_clear_cs3_bit(1 << offset);
96 };
97
cs3_gpio_get(struct gpio_chip * chip,unsigned offset)98 static int cs3_gpio_get(struct gpio_chip *chip, unsigned offset)
99 {
100 if (offset > 15)
101 return simpad_get_cs3_ro() & (1 << (offset - 16));
102 return simpad_get_cs3_shadow() & (1 << offset);
103 };
104
cs3_gpio_direction_input(struct gpio_chip * chip,unsigned offset)105 static int cs3_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
106 {
107 if (offset > 15)
108 return 0;
109 return -EINVAL;
110 };
111
cs3_gpio_direction_output(struct gpio_chip * chip,unsigned offset,int value)112 static int cs3_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
113 int value)
114 {
115 if (offset > 15)
116 return -EINVAL;
117 cs3_gpio_set(chip, offset, value);
118 return 0;
119 };
120
121 static struct map_desc simpad_io_desc[] __initdata = {
122 { /* MQ200 */
123 .virtual = 0xf2800000,
124 .pfn = __phys_to_pfn(0x4b800000),
125 .length = 0x00800000,
126 .type = MT_DEVICE
127 }, { /* Simpad CS3 */
128 .virtual = (unsigned long)CS3_BASE,
129 .pfn = __phys_to_pfn(SA1100_CS3_PHYS),
130 .length = 0x00100000,
131 .type = MT_DEVICE
132 },
133 };
134
135
simpad_uart_pm(struct uart_port * port,u_int state,u_int oldstate)136 static void simpad_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
137 {
138 if (port->mapbase == (u_int)&Ser1UTCR0) {
139 if (state)
140 {
141 simpad_clear_cs3_bit(RS232_ON);
142 simpad_clear_cs3_bit(DECT_POWER_ON);
143 }else
144 {
145 simpad_set_cs3_bit(RS232_ON);
146 simpad_set_cs3_bit(DECT_POWER_ON);
147 }
148 }
149 }
150
151 static struct sa1100_port_fns simpad_port_fns __initdata = {
152 .pm = simpad_uart_pm,
153 };
154
155
156 static struct mtd_partition simpad_partitions[] = {
157 {
158 .name = "SIMpad boot firmware",
159 .size = 0x00080000,
160 .offset = 0,
161 .mask_flags = MTD_WRITEABLE,
162 }, {
163 .name = "SIMpad kernel",
164 .size = 0x0010000,
165 .offset = MTDPART_OFS_APPEND,
166 }, {
167 .name = "SIMpad root jffs2",
168 .size = MTDPART_SIZ_FULL,
169 .offset = MTDPART_OFS_APPEND,
170 }
171 };
172
173 static struct flash_platform_data simpad_flash_data = {
174 .map_name = "cfi_probe",
175 .parts = simpad_partitions,
176 .nr_parts = ARRAY_SIZE(simpad_partitions),
177 };
178
179
180 static struct resource simpad_flash_resources [] = {
181 DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_16M),
182 DEFINE_RES_MEM(SA1100_CS1_PHYS, SZ_16M),
183 };
184
185 static struct ucb1x00_plat_data simpad_ucb1x00_data = {
186 .gpio_base = SIMPAD_UCB1X00_GPIO_BASE,
187 };
188
189 static struct mcp_plat_data simpad_mcp_data = {
190 .mccr0 = MCCR0_ADM,
191 .sclk_rate = 11981000,
192 .codec_pdata = &simpad_ucb1x00_data,
193 };
194
195
196
simpad_map_io(void)197 static void __init simpad_map_io(void)
198 {
199 sa1100_map_io();
200
201 iotable_init(simpad_io_desc, ARRAY_SIZE(simpad_io_desc));
202
203 /* Initialize CS3 */
204 cs3_shadow = (EN1 | EN0 | LED2_ON | DISPLAY_ON |
205 RS232_ON | ENABLE_5V | RESET_SIMCARD | DECT_POWER_ON);
206 __simpad_write_cs3(); /* Spinlocks not yet initialized */
207
208 sa1100_register_uart_fns(&simpad_port_fns);
209 sa1100_register_uart(0, 3); /* serial interface */
210 sa1100_register_uart(1, 1); /* DECT */
211
212 // Reassign UART 1 pins
213 GAFR |= GPIO_UART_TXD | GPIO_UART_RXD;
214 GPDR |= GPIO_UART_TXD | GPIO_LDD13 | GPIO_LDD15;
215 GPDR &= ~GPIO_UART_RXD;
216 PPAR |= PPAR_UPR;
217
218 /*
219 * Set up registers for sleep mode.
220 */
221
222
223 PWER = PWER_GPIO0| PWER_RTC;
224 PGSR = 0x818;
225 PCFR = 0;
226 PSDR = 0;
227
228 }
229
simpad_power_off(void)230 static void simpad_power_off(void)
231 {
232 local_irq_disable();
233 cs3_shadow = SD_MEDIAQ;
234 __simpad_write_cs3(); /* Bypass spinlock here */
235
236 /* disable internal oscillator, float CS lines */
237 PCFR = (PCFR_OPDE | PCFR_FP | PCFR_FS);
238 /* enable wake-up on GPIO0 */
239 PWER = GFER = GRER = PWER_GPIO0;
240 /*
241 * set scratchpad to zero, just in case it is used as a
242 * restart address by the bootloader.
243 */
244 PSPR = 0;
245 PGSR = 0;
246 /* enter sleep mode */
247 PMCR = PMCR_SF;
248 while(1);
249
250 local_irq_enable(); /* we won't ever call it */
251
252
253 }
254
255 /*
256 * gpio_keys
257 */
258
259 static struct gpio_keys_button simpad_button_table[] = {
260 { KEY_POWER, IRQ_GPIO_POWER_BUTTON, 1, "power button" },
261 };
262
263 static struct gpio_keys_platform_data simpad_keys_data = {
264 .buttons = simpad_button_table,
265 .nbuttons = ARRAY_SIZE(simpad_button_table),
266 };
267
268 static struct platform_device simpad_keys = {
269 .name = "gpio-keys",
270 .dev = {
271 .platform_data = &simpad_keys_data,
272 },
273 };
274
275 static struct gpio_keys_button simpad_polled_button_table[] = {
276 { KEY_PROG1, SIMPAD_UCB1X00_GPIO_PROG1, 1, "prog1 button" },
277 { KEY_PROG2, SIMPAD_UCB1X00_GPIO_PROG2, 1, "prog2 button" },
278 { KEY_UP, SIMPAD_UCB1X00_GPIO_UP, 1, "up button" },
279 { KEY_DOWN, SIMPAD_UCB1X00_GPIO_DOWN, 1, "down button" },
280 { KEY_LEFT, SIMPAD_UCB1X00_GPIO_LEFT, 1, "left button" },
281 { KEY_RIGHT, SIMPAD_UCB1X00_GPIO_RIGHT, 1, "right button" },
282 };
283
284 static struct gpio_keys_platform_data simpad_polled_keys_data = {
285 .buttons = simpad_polled_button_table,
286 .nbuttons = ARRAY_SIZE(simpad_polled_button_table),
287 .poll_interval = 50,
288 };
289
290 static struct platform_device simpad_polled_keys = {
291 .name = "gpio-keys-polled",
292 .dev = {
293 .platform_data = &simpad_polled_keys_data,
294 },
295 };
296
297 /*
298 * GPIO LEDs
299 */
300
301 static struct gpio_led simpad_leds[] = {
302 {
303 .name = "simpad:power",
304 .gpio = SIMPAD_CS3_LED2_ON,
305 .active_low = 0,
306 .default_trigger = "default-on",
307 },
308 };
309
310 static struct gpio_led_platform_data simpad_led_data = {
311 .num_leds = ARRAY_SIZE(simpad_leds),
312 .leds = simpad_leds,
313 };
314
315 static struct platform_device simpad_gpio_leds = {
316 .name = "leds-gpio",
317 .id = 0,
318 .dev = {
319 .platform_data = &simpad_led_data,
320 },
321 };
322
323 /*
324 * i2c
325 */
326 static struct i2c_gpio_platform_data simpad_i2c_data = {
327 .sda_pin = GPIO_GPIO21,
328 .scl_pin = GPIO_GPIO25,
329 .udelay = 10,
330 .timeout = HZ,
331 };
332
333 static struct platform_device simpad_i2c = {
334 .name = "i2c-gpio",
335 .id = 0,
336 .dev = {
337 .platform_data = &simpad_i2c_data,
338 },
339 };
340
341 /*
342 * MediaQ Video Device
343 */
344 static struct platform_device simpad_mq200fb = {
345 .name = "simpad-mq200",
346 .id = 0,
347 };
348
349 static struct platform_device *devices[] __initdata = {
350 &simpad_keys,
351 &simpad_polled_keys,
352 &simpad_mq200fb,
353 &simpad_gpio_leds,
354 &simpad_i2c,
355 };
356
357
358
simpad_init(void)359 static int __init simpad_init(void)
360 {
361 int ret;
362
363 spin_lock_init(&cs3_lock);
364
365 cs3_gpio.label = "simpad_cs3";
366 cs3_gpio.base = SIMPAD_CS3_GPIO_BASE;
367 cs3_gpio.ngpio = 24;
368 cs3_gpio.set = cs3_gpio_set;
369 cs3_gpio.get = cs3_gpio_get;
370 cs3_gpio.direction_input = cs3_gpio_direction_input;
371 cs3_gpio.direction_output = cs3_gpio_direction_output;
372 ret = gpiochip_add(&cs3_gpio);
373 if (ret)
374 printk(KERN_WARNING "simpad: Unable to register cs3 GPIO device");
375
376 pm_power_off = simpad_power_off;
377
378 sa11x0_ppc_configure_mcp();
379 sa11x0_register_mtd(&simpad_flash_data, simpad_flash_resources,
380 ARRAY_SIZE(simpad_flash_resources));
381 sa11x0_register_mcp(&simpad_mcp_data);
382
383 ret = platform_add_devices(devices, ARRAY_SIZE(devices));
384 if(ret)
385 printk(KERN_WARNING "simpad: Unable to register mq200 framebuffer device");
386
387 return 0;
388 }
389
390 arch_initcall(simpad_init);
391
392
393 MACHINE_START(SIMPAD, "Simpad")
394 /* Maintainer: Holger Freyther */
395 .atag_offset = 0x100,
396 .map_io = simpad_map_io,
397 .nr_irqs = SA1100_NR_IRQS,
398 .init_irq = sa1100_init_irq,
399 .init_late = sa11x0_init_late,
400 .init_time = sa1100_timer_init,
401 .restart = sa11x0_restart,
402 MACHINE_END
403