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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * linux/arch/arm/mach-sa1100/simpad.c | |
3 | */ | |
4 | ||
1da177e4 LT |
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> | |
f314f33b | 10 | #include <linux/string.h> |
1da177e4 | 11 | #include <linux/pm.h> |
6920b5a7 | 12 | #include <linux/platform_data/sa11x0-serial.h> |
d052d1be | 13 | #include <linux/platform_device.h> |
abe06082 | 14 | #include <linux/mfd/ucb1x00.h> |
1da177e4 LT |
15 | #include <linux/mtd/mtd.h> |
16 | #include <linux/mtd/partitions.h> | |
fced80c7 | 17 | #include <linux/io.h> |
de0bc0d1 | 18 | #include <linux/gpio.h> |
1da177e4 | 19 | |
a09e64fb | 20 | #include <mach/hardware.h> |
1da177e4 | 21 | #include <asm/setup.h> |
9a48aa4c | 22 | #include <asm/irq.h> |
1da177e4 LT |
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> | |
a1fd844c | 28 | #include <linux/platform_data/mfd-mcp-sa11x0.h> |
a09e64fb | 29 | #include <mach/simpad.h> |
f314f33b | 30 | #include <mach/irqs.h> |
1da177e4 LT |
31 | |
32 | #include <linux/serial_core.h> | |
33 | #include <linux/ioport.h> | |
dbd406f9 JF |
34 | #include <linux/input.h> |
35 | #include <linux/gpio_keys.h> | |
d056f5a8 | 36 | #include <linux/leds.h> |
dbd406f9 | 37 | #include <linux/i2c-gpio.h> |
1da177e4 LT |
38 | |
39 | #include "generic.h" | |
40 | ||
de0bc0d1 JF |
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 | ||
49 | long simpad_get_cs3_ro(void) | |
50 | { | |
51 | return readl(CS3_BASE); | |
52 | } | |
53 | EXPORT_SYMBOL(simpad_get_cs3_ro); | |
1da177e4 | 54 | |
de0bc0d1 | 55 | long simpad_get_cs3_shadow(void) |
1da177e4 LT |
56 | { |
57 | return cs3_shadow; | |
58 | } | |
de0bc0d1 | 59 | EXPORT_SYMBOL(simpad_get_cs3_shadow); |
1da177e4 | 60 | |
de0bc0d1 | 61 | static void __simpad_write_cs3(void) |
1da177e4 | 62 | { |
de0bc0d1 | 63 | writel(cs3_shadow, CS3_BASE); |
1da177e4 LT |
64 | } |
65 | ||
de0bc0d1 | 66 | void simpad_set_cs3_bit(int value) |
1da177e4 | 67 | { |
de0bc0d1 JF |
68 | unsigned long flags; |
69 | ||
70 | spin_lock_irqsave(&cs3_lock, flags); | |
1da177e4 | 71 | cs3_shadow |= value; |
de0bc0d1 JF |
72 | __simpad_write_cs3(); |
73 | spin_unlock_irqrestore(&cs3_lock, flags); | |
1da177e4 | 74 | } |
de0bc0d1 | 75 | EXPORT_SYMBOL(simpad_set_cs3_bit); |
1da177e4 | 76 | |
de0bc0d1 | 77 | void simpad_clear_cs3_bit(int value) |
1da177e4 | 78 | { |
de0bc0d1 JF |
79 | unsigned long flags; |
80 | ||
81 | spin_lock_irqsave(&cs3_lock, flags); | |
1da177e4 | 82 | cs3_shadow &= ~value; |
de0bc0d1 JF |
83 | __simpad_write_cs3(); |
84 | spin_unlock_irqrestore(&cs3_lock, flags); | |
1da177e4 | 85 | } |
de0bc0d1 JF |
86 | EXPORT_SYMBOL(simpad_clear_cs3_bit); |
87 | ||
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 | }; | |
1da177e4 | 97 | |
de0bc0d1 JF |
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 | ||
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 | ||
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 | }; | |
1da177e4 LT |
120 | |
121 | static struct map_desc simpad_io_desc[] __initdata = { | |
92519d82 DS |
122 | { /* MQ200 */ |
123 | .virtual = 0xf2800000, | |
124 | .pfn = __phys_to_pfn(0x4b800000), | |
125 | .length = 0x00800000, | |
126 | .type = MT_DEVICE | |
de0bc0d1 | 127 | }, { /* Simpad CS3 */ |
b55056ea | 128 | .virtual = (unsigned long)CS3_BASE, |
de0bc0d1 | 129 | .pfn = __phys_to_pfn(SA1100_CS3_PHYS), |
92519d82 DS |
130 | .length = 0x00100000, |
131 | .type = MT_DEVICE | |
132 | }, | |
1da177e4 LT |
133 | }; |
134 | ||
135 | ||
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 | { | |
de0bc0d1 JF |
141 | simpad_clear_cs3_bit(RS232_ON); |
142 | simpad_clear_cs3_bit(DECT_POWER_ON); | |
1da177e4 LT |
143 | }else |
144 | { | |
de0bc0d1 JF |
145 | simpad_set_cs3_bit(RS232_ON); |
146 | simpad_set_cs3_bit(DECT_POWER_ON); | |
1da177e4 LT |
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 [] = { | |
a181099e RK |
181 | DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_16M), |
182 | DEFINE_RES_MEM(SA1100_CS1_PHYS, SZ_16M), | |
1da177e4 LT |
183 | }; |
184 | ||
abe06082 RK |
185 | static struct ucb1x00_plat_data simpad_ucb1x00_data = { |
186 | .gpio_base = SIMPAD_UCB1X00_GPIO_BASE, | |
187 | }; | |
188 | ||
323cdfc1 RK |
189 | static struct mcp_plat_data simpad_mcp_data = { |
190 | .mccr0 = MCCR0_ADM, | |
191 | .sclk_rate = 11981000, | |
abe06082 | 192 | .codec_pdata = &simpad_ucb1x00_data, |
323cdfc1 RK |
193 | }; |
194 | ||
1da177e4 LT |
195 | |
196 | ||
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 | ||
de0bc0d1 JF |
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 */ | |
1da177e4 LT |
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 | ||
1da177e4 LT |
228 | } |
229 | ||
230 | static void simpad_power_off(void) | |
231 | { | |
de0bc0d1 JF |
232 | local_irq_disable(); |
233 | cs3_shadow = SD_MEDIAQ; | |
234 | __simpad_write_cs3(); /* Bypass spinlock here */ | |
1da177e4 LT |
235 | |
236 | /* disable internal oscillator, float CS lines */ | |
237 | PCFR = (PCFR_OPDE | PCFR_FP | PCFR_FS); | |
de0bc0d1 JF |
238 | /* enable wake-up on GPIO0 */ |
239 | PWER = GFER = GRER = PWER_GPIO0; | |
1da177e4 LT |
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 | ||
dbd406f9 JF |
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 | ||
d056f5a8 JF |
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 | ||
dbd406f9 JF |
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 | }; | |
1da177e4 LT |
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 = { | |
dbd406f9 JF |
350 | &simpad_keys, |
351 | &simpad_polled_keys, | |
352 | &simpad_mq200fb, | |
d056f5a8 | 353 | &simpad_gpio_leds, |
dbd406f9 | 354 | &simpad_i2c, |
1da177e4 LT |
355 | }; |
356 | ||
357 | ||
358 | ||
359 | static int __init simpad_init(void) | |
360 | { | |
361 | int ret; | |
362 | ||
de0bc0d1 JF |
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 | ||
1da177e4 LT |
376 | pm_power_off = simpad_power_off; |
377 | ||
e36e26a8 | 378 | sa11x0_ppc_configure_mcp(); |
4f444e2b JF |
379 | sa11x0_register_mtd(&simpad_flash_data, simpad_flash_resources, |
380 | ARRAY_SIZE(simpad_flash_resources)); | |
381 | sa11x0_register_mcp(&simpad_mcp_data); | |
382 | ||
1da177e4 LT |
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") | |
e9dea0c6 | 394 | /* Maintainer: Holger Freyther */ |
17f4425d | 395 | .atag_offset = 0x100, |
e9dea0c6 | 396 | .map_io = simpad_map_io, |
f314f33b | 397 | .nr_irqs = SA1100_NR_IRQS, |
e9dea0c6 | 398 | .init_irq = sa1100_init_irq, |
7fea1ba5 | 399 | .init_late = sa11x0_init_late, |
6bb27d73 | 400 | .init_time = sa1100_timer_init, |
d9ca5839 | 401 | .restart = sa11x0_restart, |
1da177e4 | 402 | MACHINE_END |