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1da177e4 LT |
1 | /* |
2 | * linux/arch/arm/common/locomo.c | |
3 | * | |
4 | * Sharp LoCoMo support | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | * | |
10 | * This file contains all generic LoCoMo support. | |
11 | * | |
12 | * All initialization functions provided here are intended to be called | |
13 | * from machine specific code with proper arguments when required. | |
14 | * | |
15 | * Based on sa1111.c | |
16 | */ | |
17 | ||
1da177e4 LT |
18 | #include <linux/module.h> |
19 | #include <linux/init.h> | |
20 | #include <linux/kernel.h> | |
21 | #include <linux/delay.h> | |
22 | #include <linux/errno.h> | |
23 | #include <linux/ioport.h> | |
d052d1be | 24 | #include <linux/platform_device.h> |
1da177e4 LT |
25 | #include <linux/slab.h> |
26 | #include <linux/spinlock.h> | |
fced80c7 | 27 | #include <linux/io.h> |
1da177e4 | 28 | |
a09e64fb | 29 | #include <mach/hardware.h> |
1da177e4 LT |
30 | #include <asm/irq.h> |
31 | #include <asm/mach/irq.h> | |
32 | ||
33 | #include <asm/hardware/locomo.h> | |
34 | ||
35 | /* M62332 output channel selection */ | |
36 | #define M62332_EVR_CH 1 /* M62332 volume channel number */ | |
37 | /* 0 : CH.1 , 1 : CH. 2 */ | |
38 | /* DAC send data */ | |
39 | #define M62332_SLAVE_ADDR 0x4e /* Slave address */ | |
40 | #define M62332_W_BIT 0x00 /* W bit (0 only) */ | |
41 | #define M62332_SUB_ADDR 0x00 /* Sub address */ | |
42 | #define M62332_A_BIT 0x00 /* A bit (0 only) */ | |
43 | ||
44 | /* DAC setup and hold times (expressed in us) */ | |
45 | #define DAC_BUS_FREE_TIME 5 /* 4.7 us */ | |
46 | #define DAC_START_SETUP_TIME 5 /* 4.7 us */ | |
47 | #define DAC_STOP_SETUP_TIME 4 /* 4.0 us */ | |
48 | #define DAC_START_HOLD_TIME 5 /* 4.7 us */ | |
49 | #define DAC_SCL_LOW_HOLD_TIME 5 /* 4.7 us */ | |
50 | #define DAC_SCL_HIGH_HOLD_TIME 4 /* 4.0 us */ | |
51 | #define DAC_DATA_SETUP_TIME 1 /* 250 ns */ | |
52 | #define DAC_DATA_HOLD_TIME 1 /* 300 ns */ | |
53 | #define DAC_LOW_SETUP_TIME 1 /* 300 ns */ | |
54 | #define DAC_HIGH_SETUP_TIME 1 /* 1000 ns */ | |
55 | ||
56 | /* the following is the overall data for the locomo chip */ | |
57 | struct locomo { | |
58 | struct device *dev; | |
59 | unsigned long phys; | |
60 | unsigned int irq; | |
61 | spinlock_t lock; | |
54815366 | 62 | void __iomem *base; |
93160c63 RW |
63 | #ifdef CONFIG_PM |
64 | void *saved_state; | |
65 | #endif | |
1da177e4 LT |
66 | }; |
67 | ||
68 | struct locomo_dev_info { | |
69 | unsigned long offset; | |
70 | unsigned long length; | |
71 | unsigned int devid; | |
72 | unsigned int irq[1]; | |
73 | const char * name; | |
74 | }; | |
75 | ||
76 | /* All the locomo devices. If offset is non-zero, the mapbase for the | |
77 | * locomo_dev will be set to the chip base plus offset. If offset is | |
78 | * zero, then the mapbase for the locomo_dev will be set to zero. An | |
79 | * offset of zero means the device only uses GPIOs or other helper | |
80 | * functions inside this file */ | |
81 | static struct locomo_dev_info locomo_devices[] = { | |
82 | { | |
83 | .devid = LOCOMO_DEVID_KEYBOARD, | |
84 | .irq = { | |
85 | IRQ_LOCOMO_KEY, | |
86 | }, | |
87 | .name = "locomo-keyboard", | |
88 | .offset = LOCOMO_KEYBOARD, | |
89 | .length = 16, | |
90 | }, | |
91 | { | |
92 | .devid = LOCOMO_DEVID_FRONTLIGHT, | |
93 | .irq = {}, | |
94 | .name = "locomo-frontlight", | |
95 | .offset = LOCOMO_FRONTLIGHT, | |
96 | .length = 8, | |
97 | ||
98 | }, | |
99 | { | |
100 | .devid = LOCOMO_DEVID_BACKLIGHT, | |
101 | .irq = {}, | |
102 | .name = "locomo-backlight", | |
103 | .offset = LOCOMO_BACKLIGHT, | |
104 | .length = 8, | |
105 | }, | |
106 | { | |
107 | .devid = LOCOMO_DEVID_AUDIO, | |
108 | .irq = {}, | |
109 | .name = "locomo-audio", | |
110 | .offset = LOCOMO_AUDIO, | |
111 | .length = 4, | |
112 | }, | |
113 | { | |
114 | .devid = LOCOMO_DEVID_LED, | |
115 | .irq = {}, | |
116 | .name = "locomo-led", | |
117 | .offset = LOCOMO_LED, | |
118 | .length = 8, | |
119 | }, | |
120 | { | |
121 | .devid = LOCOMO_DEVID_UART, | |
122 | .irq = {}, | |
123 | .name = "locomo-uart", | |
124 | .offset = 0, | |
125 | .length = 0, | |
126 | }, | |
a2025e7f DO |
127 | { |
128 | .devid = LOCOMO_DEVID_SPI, | |
129 | .irq = {}, | |
130 | .name = "locomo-spi", | |
131 | .offset = LOCOMO_SPI, | |
132 | .length = 0x30, | |
133 | }, | |
1da177e4 LT |
134 | }; |
135 | ||
136 | ||
137 | /** LoCoMo interrupt handling stuff. | |
138 | * NOTE: LoCoMo has a 1 to many mapping on all of its IRQs. | |
139 | * that is, there is only one real hardware interrupt | |
140 | * we determine which interrupt it is by reading some IO memory. | |
141 | * We have two levels of expansion, first in the handler for the | |
142 | * hardware interrupt we generate an interrupt | |
143 | * IRQ_LOCOMO_*_BASE and those handlers generate more interrupts | |
144 | * | |
145 | * hardware irq reads LOCOMO_ICR & 0x0f00 | |
146 | * IRQ_LOCOMO_KEY_BASE | |
147 | * IRQ_LOCOMO_GPIO_BASE | |
148 | * IRQ_LOCOMO_LT_BASE | |
149 | * IRQ_LOCOMO_SPI_BASE | |
150 | * IRQ_LOCOMO_KEY_BASE reads LOCOMO_KIC & 0x0001 | |
151 | * IRQ_LOCOMO_KEY | |
152 | * IRQ_LOCOMO_GPIO_BASE reads LOCOMO_GIR & LOCOMO_GPD & 0xffff | |
153 | * IRQ_LOCOMO_GPIO[0-15] | |
154 | * IRQ_LOCOMO_LT_BASE reads LOCOMO_LTINT & 0x0001 | |
155 | * IRQ_LOCOMO_LT | |
156 | * IRQ_LOCOMO_SPI_BASE reads LOCOMO_SPIIR & 0x000F | |
157 | * IRQ_LOCOMO_SPI_RFR | |
158 | * IRQ_LOCOMO_SPI_RFW | |
159 | * IRQ_LOCOMO_SPI_OVRN | |
160 | * IRQ_LOCOMO_SPI_TEND | |
161 | */ | |
162 | ||
163 | #define LOCOMO_IRQ_START (IRQ_LOCOMO_KEY_BASE) | |
164 | #define LOCOMO_IRQ_KEY_START (IRQ_LOCOMO_KEY) | |
165 | #define LOCOMO_IRQ_GPIO_START (IRQ_LOCOMO_GPIO0) | |
166 | #define LOCOMO_IRQ_LT_START (IRQ_LOCOMO_LT) | |
167 | #define LOCOMO_IRQ_SPI_START (IRQ_LOCOMO_SPI_RFR) | |
168 | ||
10dd5ce2 | 169 | static void locomo_handler(unsigned int irq, struct irq_desc *desc) |
1da177e4 LT |
170 | { |
171 | int req, i; | |
10dd5ce2 | 172 | void __iomem *mapbase = get_irq_chip_data(irq); |
1da177e4 LT |
173 | |
174 | /* Acknowledge the parent IRQ */ | |
175 | desc->chip->ack(irq); | |
176 | ||
177 | /* check why this interrupt was generated */ | |
178 | req = locomo_readl(mapbase + LOCOMO_ICR) & 0x0f00; | |
179 | ||
180 | if (req) { | |
181 | /* generate the next interrupt(s) */ | |
182 | irq = LOCOMO_IRQ_START; | |
d8aa0251 | 183 | for (i = 0; i <= 3; i++, irq++) { |
1da177e4 | 184 | if (req & (0x0100 << i)) { |
d8aa0251 | 185 | generic_handle_irq(irq); |
1da177e4 LT |
186 | } |
187 | ||
188 | } | |
189 | } | |
190 | } | |
191 | ||
192 | static void locomo_ack_irq(unsigned int irq) | |
193 | { | |
194 | } | |
195 | ||
196 | static void locomo_mask_irq(unsigned int irq) | |
197 | { | |
10dd5ce2 | 198 | void __iomem *mapbase = get_irq_chip_data(irq); |
1da177e4 LT |
199 | unsigned int r; |
200 | r = locomo_readl(mapbase + LOCOMO_ICR); | |
201 | r &= ~(0x0010 << (irq - LOCOMO_IRQ_START)); | |
202 | locomo_writel(r, mapbase + LOCOMO_ICR); | |
203 | } | |
204 | ||
205 | static void locomo_unmask_irq(unsigned int irq) | |
206 | { | |
10dd5ce2 | 207 | void __iomem *mapbase = get_irq_chip_data(irq); |
1da177e4 LT |
208 | unsigned int r; |
209 | r = locomo_readl(mapbase + LOCOMO_ICR); | |
210 | r |= (0x0010 << (irq - LOCOMO_IRQ_START)); | |
211 | locomo_writel(r, mapbase + LOCOMO_ICR); | |
212 | } | |
213 | ||
38c677cb DB |
214 | static struct irq_chip locomo_chip = { |
215 | .name = "LOCOMO", | |
1da177e4 LT |
216 | .ack = locomo_ack_irq, |
217 | .mask = locomo_mask_irq, | |
218 | .unmask = locomo_unmask_irq, | |
219 | }; | |
220 | ||
10dd5ce2 | 221 | static void locomo_key_handler(unsigned int irq, struct irq_desc *desc) |
1da177e4 | 222 | { |
10dd5ce2 | 223 | void __iomem *mapbase = get_irq_chip_data(irq); |
1da177e4 LT |
224 | |
225 | if (locomo_readl(mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC) & 0x0001) { | |
d8aa0251 | 226 | generic_handle_irq(LOCOMO_IRQ_KEY_START); |
1da177e4 LT |
227 | } |
228 | } | |
229 | ||
230 | static void locomo_key_ack_irq(unsigned int irq) | |
231 | { | |
10dd5ce2 | 232 | void __iomem *mapbase = get_irq_chip_data(irq); |
1da177e4 LT |
233 | unsigned int r; |
234 | r = locomo_readl(mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC); | |
235 | r &= ~(0x0100 << (irq - LOCOMO_IRQ_KEY_START)); | |
236 | locomo_writel(r, mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC); | |
237 | } | |
238 | ||
239 | static void locomo_key_mask_irq(unsigned int irq) | |
240 | { | |
10dd5ce2 | 241 | void __iomem *mapbase = get_irq_chip_data(irq); |
1da177e4 LT |
242 | unsigned int r; |
243 | r = locomo_readl(mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC); | |
244 | r &= ~(0x0010 << (irq - LOCOMO_IRQ_KEY_START)); | |
245 | locomo_writel(r, mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC); | |
246 | } | |
247 | ||
248 | static void locomo_key_unmask_irq(unsigned int irq) | |
249 | { | |
10dd5ce2 | 250 | void __iomem *mapbase = get_irq_chip_data(irq); |
1da177e4 LT |
251 | unsigned int r; |
252 | r = locomo_readl(mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC); | |
253 | r |= (0x0010 << (irq - LOCOMO_IRQ_KEY_START)); | |
254 | locomo_writel(r, mapbase + LOCOMO_KEYBOARD + LOCOMO_KIC); | |
255 | } | |
256 | ||
38c677cb DB |
257 | static struct irq_chip locomo_key_chip = { |
258 | .name = "LOCOMO-key", | |
1da177e4 LT |
259 | .ack = locomo_key_ack_irq, |
260 | .mask = locomo_key_mask_irq, | |
261 | .unmask = locomo_key_unmask_irq, | |
262 | }; | |
263 | ||
10dd5ce2 | 264 | static void locomo_gpio_handler(unsigned int irq, struct irq_desc *desc) |
1da177e4 LT |
265 | { |
266 | int req, i; | |
10dd5ce2 | 267 | void __iomem *mapbase = get_irq_chip_data(irq); |
1da177e4 LT |
268 | |
269 | req = locomo_readl(mapbase + LOCOMO_GIR) & | |
270 | locomo_readl(mapbase + LOCOMO_GPD) & | |
271 | 0xffff; | |
272 | ||
273 | if (req) { | |
274 | irq = LOCOMO_IRQ_GPIO_START; | |
d8aa0251 | 275 | for (i = 0; i <= 15; i++, irq++) { |
1da177e4 | 276 | if (req & (0x0001 << i)) { |
d8aa0251 | 277 | generic_handle_irq(irq); |
1da177e4 LT |
278 | } |
279 | } | |
280 | } | |
281 | } | |
282 | ||
283 | static void locomo_gpio_ack_irq(unsigned int irq) | |
284 | { | |
10dd5ce2 | 285 | void __iomem *mapbase = get_irq_chip_data(irq); |
1da177e4 LT |
286 | unsigned int r; |
287 | r = locomo_readl(mapbase + LOCOMO_GWE); | |
288 | r |= (0x0001 << (irq - LOCOMO_IRQ_GPIO_START)); | |
289 | locomo_writel(r, mapbase + LOCOMO_GWE); | |
290 | ||
291 | r = locomo_readl(mapbase + LOCOMO_GIS); | |
292 | r &= ~(0x0001 << (irq - LOCOMO_IRQ_GPIO_START)); | |
293 | locomo_writel(r, mapbase + LOCOMO_GIS); | |
294 | ||
295 | r = locomo_readl(mapbase + LOCOMO_GWE); | |
296 | r &= ~(0x0001 << (irq - LOCOMO_IRQ_GPIO_START)); | |
297 | locomo_writel(r, mapbase + LOCOMO_GWE); | |
298 | } | |
299 | ||
300 | static void locomo_gpio_mask_irq(unsigned int irq) | |
301 | { | |
10dd5ce2 | 302 | void __iomem *mapbase = get_irq_chip_data(irq); |
1da177e4 LT |
303 | unsigned int r; |
304 | r = locomo_readl(mapbase + LOCOMO_GIE); | |
305 | r &= ~(0x0001 << (irq - LOCOMO_IRQ_GPIO_START)); | |
306 | locomo_writel(r, mapbase + LOCOMO_GIE); | |
307 | } | |
308 | ||
309 | static void locomo_gpio_unmask_irq(unsigned int irq) | |
310 | { | |
10dd5ce2 | 311 | void __iomem *mapbase = get_irq_chip_data(irq); |
1da177e4 LT |
312 | unsigned int r; |
313 | r = locomo_readl(mapbase + LOCOMO_GIE); | |
314 | r |= (0x0001 << (irq - LOCOMO_IRQ_GPIO_START)); | |
315 | locomo_writel(r, mapbase + LOCOMO_GIE); | |
316 | } | |
317 | ||
2a52efb2 TK |
318 | static int GPIO_IRQ_rising_edge; |
319 | static int GPIO_IRQ_falling_edge; | |
320 | ||
321 | static int locomo_gpio_type(unsigned int irq, unsigned int type) | |
322 | { | |
323 | unsigned int mask; | |
324 | void __iomem *mapbase = get_irq_chip_data(irq); | |
325 | ||
326 | mask = 1 << (irq - LOCOMO_IRQ_GPIO_START); | |
327 | ||
6cab4860 | 328 | if (type == IRQ_TYPE_PROBE) { |
2a52efb2 TK |
329 | if ((GPIO_IRQ_rising_edge | GPIO_IRQ_falling_edge) & mask) |
330 | return 0; | |
6cab4860 | 331 | type = IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING; |
2a52efb2 TK |
332 | } |
333 | ||
6cab4860 | 334 | if (type & IRQ_TYPE_EDGE_RISING) |
2a52efb2 TK |
335 | GPIO_IRQ_rising_edge |= mask; |
336 | else | |
337 | GPIO_IRQ_rising_edge &= ~mask; | |
6cab4860 | 338 | if (type & IRQ_TYPE_EDGE_FALLING) |
2a52efb2 TK |
339 | GPIO_IRQ_falling_edge |= mask; |
340 | else | |
341 | GPIO_IRQ_falling_edge &= ~mask; | |
342 | locomo_writel(GPIO_IRQ_rising_edge, mapbase + LOCOMO_GRIE); | |
343 | locomo_writel(GPIO_IRQ_falling_edge, mapbase + LOCOMO_GFIE); | |
344 | ||
345 | return 0; | |
346 | } | |
347 | ||
38c677cb | 348 | static struct irq_chip locomo_gpio_chip = { |
2a52efb2 TK |
349 | .name = "LOCOMO-gpio", |
350 | .ack = locomo_gpio_ack_irq, | |
351 | .mask = locomo_gpio_mask_irq, | |
352 | .unmask = locomo_gpio_unmask_irq, | |
353 | .set_type = locomo_gpio_type, | |
1da177e4 LT |
354 | }; |
355 | ||
10dd5ce2 | 356 | static void locomo_lt_handler(unsigned int irq, struct irq_desc *desc) |
1da177e4 | 357 | { |
10dd5ce2 | 358 | void __iomem *mapbase = get_irq_chip_data(irq); |
1da177e4 LT |
359 | |
360 | if (locomo_readl(mapbase + LOCOMO_LTINT) & 0x0001) { | |
d8aa0251 | 361 | generic_handle_irq(LOCOMO_IRQ_LT_START); |
1da177e4 LT |
362 | } |
363 | } | |
364 | ||
365 | static void locomo_lt_ack_irq(unsigned int irq) | |
366 | { | |
10dd5ce2 | 367 | void __iomem *mapbase = get_irq_chip_data(irq); |
1da177e4 LT |
368 | unsigned int r; |
369 | r = locomo_readl(mapbase + LOCOMO_LTINT); | |
370 | r &= ~(0x0100 << (irq - LOCOMO_IRQ_LT_START)); | |
371 | locomo_writel(r, mapbase + LOCOMO_LTINT); | |
372 | } | |
373 | ||
374 | static void locomo_lt_mask_irq(unsigned int irq) | |
375 | { | |
10dd5ce2 | 376 | void __iomem *mapbase = get_irq_chip_data(irq); |
1da177e4 LT |
377 | unsigned int r; |
378 | r = locomo_readl(mapbase + LOCOMO_LTINT); | |
379 | r &= ~(0x0010 << (irq - LOCOMO_IRQ_LT_START)); | |
380 | locomo_writel(r, mapbase + LOCOMO_LTINT); | |
381 | } | |
382 | ||
383 | static void locomo_lt_unmask_irq(unsigned int irq) | |
384 | { | |
10dd5ce2 | 385 | void __iomem *mapbase = get_irq_chip_data(irq); |
1da177e4 LT |
386 | unsigned int r; |
387 | r = locomo_readl(mapbase + LOCOMO_LTINT); | |
388 | r |= (0x0010 << (irq - LOCOMO_IRQ_LT_START)); | |
389 | locomo_writel(r, mapbase + LOCOMO_LTINT); | |
390 | } | |
391 | ||
38c677cb DB |
392 | static struct irq_chip locomo_lt_chip = { |
393 | .name = "LOCOMO-lt", | |
1da177e4 LT |
394 | .ack = locomo_lt_ack_irq, |
395 | .mask = locomo_lt_mask_irq, | |
396 | .unmask = locomo_lt_unmask_irq, | |
397 | }; | |
398 | ||
10dd5ce2 | 399 | static void locomo_spi_handler(unsigned int irq, struct irq_desc *desc) |
1da177e4 LT |
400 | { |
401 | int req, i; | |
10dd5ce2 | 402 | void __iomem *mapbase = get_irq_chip_data(irq); |
1da177e4 | 403 | |
a2025e7f | 404 | req = locomo_readl(mapbase + LOCOMO_SPI + LOCOMO_SPIIR) & 0x000F; |
1da177e4 LT |
405 | if (req) { |
406 | irq = LOCOMO_IRQ_SPI_START; | |
1da177e4 | 407 | |
d8aa0251 | 408 | for (i = 0; i <= 3; i++, irq++) { |
1da177e4 | 409 | if (req & (0x0001 << i)) { |
d8aa0251 | 410 | generic_handle_irq(irq); |
1da177e4 LT |
411 | } |
412 | } | |
413 | } | |
414 | } | |
415 | ||
416 | static void locomo_spi_ack_irq(unsigned int irq) | |
417 | { | |
10dd5ce2 | 418 | void __iomem *mapbase = get_irq_chip_data(irq); |
1da177e4 | 419 | unsigned int r; |
a2025e7f | 420 | r = locomo_readl(mapbase + LOCOMO_SPI + LOCOMO_SPIWE); |
1da177e4 | 421 | r |= (0x0001 << (irq - LOCOMO_IRQ_SPI_START)); |
a2025e7f | 422 | locomo_writel(r, mapbase + LOCOMO_SPI + LOCOMO_SPIWE); |
1da177e4 | 423 | |
a2025e7f | 424 | r = locomo_readl(mapbase + LOCOMO_SPI + LOCOMO_SPIIS); |
1da177e4 | 425 | r &= ~(0x0001 << (irq - LOCOMO_IRQ_SPI_START)); |
a2025e7f | 426 | locomo_writel(r, mapbase + LOCOMO_SPI + LOCOMO_SPIIS); |
1da177e4 | 427 | |
a2025e7f | 428 | r = locomo_readl(mapbase + LOCOMO_SPI + LOCOMO_SPIWE); |
1da177e4 | 429 | r &= ~(0x0001 << (irq - LOCOMO_IRQ_SPI_START)); |
a2025e7f | 430 | locomo_writel(r, mapbase + LOCOMO_SPI + LOCOMO_SPIWE); |
1da177e4 LT |
431 | } |
432 | ||
433 | static void locomo_spi_mask_irq(unsigned int irq) | |
434 | { | |
10dd5ce2 | 435 | void __iomem *mapbase = get_irq_chip_data(irq); |
1da177e4 | 436 | unsigned int r; |
a2025e7f | 437 | r = locomo_readl(mapbase + LOCOMO_SPI + LOCOMO_SPIIE); |
1da177e4 | 438 | r &= ~(0x0001 << (irq - LOCOMO_IRQ_SPI_START)); |
a2025e7f | 439 | locomo_writel(r, mapbase + LOCOMO_SPI + LOCOMO_SPIIE); |
1da177e4 LT |
440 | } |
441 | ||
442 | static void locomo_spi_unmask_irq(unsigned int irq) | |
443 | { | |
10dd5ce2 | 444 | void __iomem *mapbase = get_irq_chip_data(irq); |
1da177e4 | 445 | unsigned int r; |
a2025e7f | 446 | r = locomo_readl(mapbase + LOCOMO_SPI + LOCOMO_SPIIE); |
1da177e4 | 447 | r |= (0x0001 << (irq - LOCOMO_IRQ_SPI_START)); |
a2025e7f | 448 | locomo_writel(r, mapbase + LOCOMO_SPI + LOCOMO_SPIIE); |
1da177e4 LT |
449 | } |
450 | ||
38c677cb DB |
451 | static struct irq_chip locomo_spi_chip = { |
452 | .name = "LOCOMO-spi", | |
1da177e4 LT |
453 | .ack = locomo_spi_ack_irq, |
454 | .mask = locomo_spi_mask_irq, | |
455 | .unmask = locomo_spi_unmask_irq, | |
456 | }; | |
457 | ||
458 | static void locomo_setup_irq(struct locomo *lchip) | |
459 | { | |
460 | int irq; | |
54815366 | 461 | void __iomem *irqbase = lchip->base; |
1da177e4 LT |
462 | |
463 | /* | |
464 | * Install handler for IRQ_LOCOMO_HW. | |
465 | */ | |
6cab4860 | 466 | set_irq_type(lchip->irq, IRQ_TYPE_EDGE_FALLING); |
10dd5ce2 | 467 | set_irq_chip_data(lchip->irq, irqbase); |
1da177e4 LT |
468 | set_irq_chained_handler(lchip->irq, locomo_handler); |
469 | ||
470 | /* Install handlers for IRQ_LOCOMO_*_BASE */ | |
471 | set_irq_chip(IRQ_LOCOMO_KEY_BASE, &locomo_chip); | |
10dd5ce2 | 472 | set_irq_chip_data(IRQ_LOCOMO_KEY_BASE, irqbase); |
1da177e4 | 473 | set_irq_chained_handler(IRQ_LOCOMO_KEY_BASE, locomo_key_handler); |
1da177e4 LT |
474 | |
475 | set_irq_chip(IRQ_LOCOMO_GPIO_BASE, &locomo_chip); | |
10dd5ce2 | 476 | set_irq_chip_data(IRQ_LOCOMO_GPIO_BASE, irqbase); |
1da177e4 | 477 | set_irq_chained_handler(IRQ_LOCOMO_GPIO_BASE, locomo_gpio_handler); |
1da177e4 LT |
478 | |
479 | set_irq_chip(IRQ_LOCOMO_LT_BASE, &locomo_chip); | |
10dd5ce2 | 480 | set_irq_chip_data(IRQ_LOCOMO_LT_BASE, irqbase); |
1da177e4 | 481 | set_irq_chained_handler(IRQ_LOCOMO_LT_BASE, locomo_lt_handler); |
1da177e4 LT |
482 | |
483 | set_irq_chip(IRQ_LOCOMO_SPI_BASE, &locomo_chip); | |
10dd5ce2 | 484 | set_irq_chip_data(IRQ_LOCOMO_SPI_BASE, irqbase); |
1da177e4 | 485 | set_irq_chained_handler(IRQ_LOCOMO_SPI_BASE, locomo_spi_handler); |
1da177e4 LT |
486 | |
487 | /* install handlers for IRQ_LOCOMO_KEY_BASE generated interrupts */ | |
488 | set_irq_chip(LOCOMO_IRQ_KEY_START, &locomo_key_chip); | |
10dd5ce2 RK |
489 | set_irq_chip_data(LOCOMO_IRQ_KEY_START, irqbase); |
490 | set_irq_handler(LOCOMO_IRQ_KEY_START, handle_edge_irq); | |
1da177e4 LT |
491 | set_irq_flags(LOCOMO_IRQ_KEY_START, IRQF_VALID | IRQF_PROBE); |
492 | ||
493 | /* install handlers for IRQ_LOCOMO_GPIO_BASE generated interrupts */ | |
494 | for (irq = LOCOMO_IRQ_GPIO_START; irq < LOCOMO_IRQ_GPIO_START + 16; irq++) { | |
495 | set_irq_chip(irq, &locomo_gpio_chip); | |
10dd5ce2 RK |
496 | set_irq_chip_data(irq, irqbase); |
497 | set_irq_handler(irq, handle_edge_irq); | |
1da177e4 LT |
498 | set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); |
499 | } | |
500 | ||
501 | /* install handlers for IRQ_LOCOMO_LT_BASE generated interrupts */ | |
502 | set_irq_chip(LOCOMO_IRQ_LT_START, &locomo_lt_chip); | |
10dd5ce2 RK |
503 | set_irq_chip_data(LOCOMO_IRQ_LT_START, irqbase); |
504 | set_irq_handler(LOCOMO_IRQ_LT_START, handle_edge_irq); | |
1da177e4 LT |
505 | set_irq_flags(LOCOMO_IRQ_LT_START, IRQF_VALID | IRQF_PROBE); |
506 | ||
507 | /* install handlers for IRQ_LOCOMO_SPI_BASE generated interrupts */ | |
2a52efb2 | 508 | for (irq = LOCOMO_IRQ_SPI_START; irq < LOCOMO_IRQ_SPI_START + 4; irq++) { |
1da177e4 | 509 | set_irq_chip(irq, &locomo_spi_chip); |
10dd5ce2 RK |
510 | set_irq_chip_data(irq, irqbase); |
511 | set_irq_handler(irq, handle_edge_irq); | |
1da177e4 LT |
512 | set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); |
513 | } | |
514 | } | |
515 | ||
516 | ||
517 | static void locomo_dev_release(struct device *_dev) | |
518 | { | |
519 | struct locomo_dev *dev = LOCOMO_DEV(_dev); | |
520 | ||
521 | kfree(dev); | |
522 | } | |
523 | ||
524 | static int | |
525 | locomo_init_one_child(struct locomo *lchip, struct locomo_dev_info *info) | |
526 | { | |
527 | struct locomo_dev *dev; | |
528 | int ret; | |
529 | ||
d2a02b93 | 530 | dev = kzalloc(sizeof(struct locomo_dev), GFP_KERNEL); |
1da177e4 LT |
531 | if (!dev) { |
532 | ret = -ENOMEM; | |
533 | goto out; | |
534 | } | |
1da177e4 | 535 | |
1da177e4 LT |
536 | /* |
537 | * If the parent device has a DMA mask associated with it, | |
538 | * propagate it down to the children. | |
539 | */ | |
540 | if (lchip->dev->dma_mask) { | |
541 | dev->dma_mask = *lchip->dev->dma_mask; | |
542 | dev->dev.dma_mask = &dev->dma_mask; | |
543 | } | |
544 | ||
3f978704 | 545 | dev_set_name(&dev->dev, "%s", info->name); |
1da177e4 LT |
546 | dev->devid = info->devid; |
547 | dev->dev.parent = lchip->dev; | |
548 | dev->dev.bus = &locomo_bus_type; | |
549 | dev->dev.release = locomo_dev_release; | |
550 | dev->dev.coherent_dma_mask = lchip->dev->coherent_dma_mask; | |
551 | ||
552 | if (info->offset) | |
553 | dev->mapbase = lchip->base + info->offset; | |
554 | else | |
555 | dev->mapbase = 0; | |
556 | dev->length = info->length; | |
557 | ||
558 | memmove(dev->irq, info->irq, sizeof(dev->irq)); | |
559 | ||
560 | ret = device_register(&dev->dev); | |
561 | if (ret) { | |
562 | out: | |
563 | kfree(dev); | |
564 | } | |
565 | return ret; | |
566 | } | |
567 | ||
b38d950d JL |
568 | #ifdef CONFIG_PM |
569 | ||
570 | struct locomo_save_data { | |
571 | u16 LCM_GPO; | |
572 | u16 LCM_SPICT; | |
573 | u16 LCM_GPE; | |
574 | u16 LCM_ASD; | |
575 | u16 LCM_SPIMD; | |
576 | }; | |
577 | ||
3ae5eaec | 578 | static int locomo_suspend(struct platform_device *dev, pm_message_t state) |
b38d950d | 579 | { |
3ae5eaec | 580 | struct locomo *lchip = platform_get_drvdata(dev); |
b38d950d JL |
581 | struct locomo_save_data *save; |
582 | unsigned long flags; | |
583 | ||
b38d950d JL |
584 | save = kmalloc(sizeof(struct locomo_save_data), GFP_KERNEL); |
585 | if (!save) | |
586 | return -ENOMEM; | |
587 | ||
93160c63 | 588 | lchip->saved_state = save; |
b38d950d JL |
589 | |
590 | spin_lock_irqsave(&lchip->lock, flags); | |
591 | ||
592 | save->LCM_GPO = locomo_readl(lchip->base + LOCOMO_GPO); /* GPIO */ | |
593 | locomo_writel(0x00, lchip->base + LOCOMO_GPO); | |
2a52efb2 | 594 | save->LCM_SPICT = locomo_readl(lchip->base + LOCOMO_SPI + LOCOMO_SPICT); /* SPI */ |
b38d950d JL |
595 | locomo_writel(0x40, lchip->base + LOCOMO_SPICT); |
596 | save->LCM_GPE = locomo_readl(lchip->base + LOCOMO_GPE); /* GPIO */ | |
597 | locomo_writel(0x00, lchip->base + LOCOMO_GPE); | |
598 | save->LCM_ASD = locomo_readl(lchip->base + LOCOMO_ASD); /* ADSTART */ | |
599 | locomo_writel(0x00, lchip->base + LOCOMO_ASD); | |
2a52efb2 TK |
600 | save->LCM_SPIMD = locomo_readl(lchip->base + LOCOMO_SPI + LOCOMO_SPIMD); /* SPI */ |
601 | locomo_writel(0x3C14, lchip->base + LOCOMO_SPI + LOCOMO_SPIMD); | |
b38d950d JL |
602 | |
603 | locomo_writel(0x00, lchip->base + LOCOMO_PAIF); | |
604 | locomo_writel(0x00, lchip->base + LOCOMO_DAC); | |
605 | locomo_writel(0x00, lchip->base + LOCOMO_BACKLIGHT + LOCOMO_TC); | |
606 | ||
2a52efb2 | 607 | if ((locomo_readl(lchip->base + LOCOMO_LED + LOCOMO_LPT0) & 0x88) && (locomo_readl(lchip->base + LOCOMO_LED + LOCOMO_LPT1) & 0x88)) |
b38d950d JL |
608 | locomo_writel(0x00, lchip->base + LOCOMO_C32K); /* CLK32 off */ |
609 | else | |
610 | /* 18MHz already enabled, so no wait */ | |
611 | locomo_writel(0xc1, lchip->base + LOCOMO_C32K); /* CLK32 on */ | |
612 | ||
613 | locomo_writel(0x00, lchip->base + LOCOMO_TADC); /* 18MHz clock off*/ | |
614 | locomo_writel(0x00, lchip->base + LOCOMO_AUDIO + LOCOMO_ACC); /* 22MHz/24MHz clock off */ | |
615 | locomo_writel(0x00, lchip->base + LOCOMO_FRONTLIGHT + LOCOMO_ALS); /* FL */ | |
616 | ||
617 | spin_unlock_irqrestore(&lchip->lock, flags); | |
618 | ||
619 | return 0; | |
620 | } | |
621 | ||
3ae5eaec | 622 | static int locomo_resume(struct platform_device *dev) |
b38d950d | 623 | { |
3ae5eaec | 624 | struct locomo *lchip = platform_get_drvdata(dev); |
b38d950d JL |
625 | struct locomo_save_data *save; |
626 | unsigned long r; | |
627 | unsigned long flags; | |
93160c63 RW |
628 | |
629 | save = lchip->saved_state; | |
b38d950d JL |
630 | if (!save) |
631 | return 0; | |
632 | ||
633 | spin_lock_irqsave(&lchip->lock, flags); | |
634 | ||
635 | locomo_writel(save->LCM_GPO, lchip->base + LOCOMO_GPO); | |
2a52efb2 | 636 | locomo_writel(save->LCM_SPICT, lchip->base + LOCOMO_SPI + LOCOMO_SPICT); |
b38d950d JL |
637 | locomo_writel(save->LCM_GPE, lchip->base + LOCOMO_GPE); |
638 | locomo_writel(save->LCM_ASD, lchip->base + LOCOMO_ASD); | |
2a52efb2 | 639 | locomo_writel(save->LCM_SPIMD, lchip->base + LOCOMO_SPI + LOCOMO_SPIMD); |
b38d950d JL |
640 | |
641 | locomo_writel(0x00, lchip->base + LOCOMO_C32K); | |
642 | locomo_writel(0x90, lchip->base + LOCOMO_TADC); | |
643 | ||
644 | locomo_writel(0, lchip->base + LOCOMO_KEYBOARD + LOCOMO_KSC); | |
645 | r = locomo_readl(lchip->base + LOCOMO_KEYBOARD + LOCOMO_KIC); | |
646 | r &= 0xFEFF; | |
647 | locomo_writel(r, lchip->base + LOCOMO_KEYBOARD + LOCOMO_KIC); | |
648 | locomo_writel(0x1, lchip->base + LOCOMO_KEYBOARD + LOCOMO_KCMD); | |
649 | ||
650 | spin_unlock_irqrestore(&lchip->lock, flags); | |
93160c63 RW |
651 | |
652 | lchip->saved_state = NULL; | |
b38d950d JL |
653 | kfree(save); |
654 | ||
655 | return 0; | |
656 | } | |
657 | #endif | |
658 | ||
4ebf2d00 | 659 | |
1da177e4 LT |
660 | /** |
661 | * locomo_probe - probe for a single LoCoMo chip. | |
662 | * @phys_addr: physical address of device. | |
663 | * | |
664 | * Probe for a LoCoMo chip. This must be called | |
665 | * before any other locomo-specific code. | |
666 | * | |
667 | * Returns: | |
668 | * %-ENODEV device not found. | |
669 | * %-EBUSY physical address already marked in-use. | |
670 | * %0 successful. | |
671 | */ | |
672 | static int | |
673 | __locomo_probe(struct device *me, struct resource *mem, int irq) | |
674 | { | |
675 | struct locomo *lchip; | |
676 | unsigned long r; | |
677 | int i, ret = -ENODEV; | |
678 | ||
d2a02b93 | 679 | lchip = kzalloc(sizeof(struct locomo), GFP_KERNEL); |
1da177e4 LT |
680 | if (!lchip) |
681 | return -ENOMEM; | |
682 | ||
1da177e4 LT |
683 | spin_lock_init(&lchip->lock); |
684 | ||
685 | lchip->dev = me; | |
686 | dev_set_drvdata(lchip->dev, lchip); | |
687 | ||
688 | lchip->phys = mem->start; | |
689 | lchip->irq = irq; | |
690 | ||
691 | /* | |
692 | * Map the whole region. This also maps the | |
693 | * registers for our children. | |
694 | */ | |
695 | lchip->base = ioremap(mem->start, PAGE_SIZE); | |
696 | if (!lchip->base) { | |
697 | ret = -ENOMEM; | |
698 | goto out; | |
699 | } | |
700 | ||
701 | /* locomo initialize */ | |
702 | locomo_writel(0, lchip->base + LOCOMO_ICR); | |
703 | /* KEYBOARD */ | |
704 | locomo_writel(0, lchip->base + LOCOMO_KEYBOARD + LOCOMO_KIC); | |
705 | ||
706 | /* GPIO */ | |
707 | locomo_writel(0, lchip->base + LOCOMO_GPO); | |
2a52efb2 | 708 | locomo_writel((LOCOMO_GPIO(1) | LOCOMO_GPIO(2) | LOCOMO_GPIO(13) | LOCOMO_GPIO(14)) |
1da177e4 | 709 | , lchip->base + LOCOMO_GPE); |
2a52efb2 | 710 | locomo_writel((LOCOMO_GPIO(1) | LOCOMO_GPIO(2) | LOCOMO_GPIO(13) | LOCOMO_GPIO(14)) |
1da177e4 LT |
711 | , lchip->base + LOCOMO_GPD); |
712 | locomo_writel(0, lchip->base + LOCOMO_GIE); | |
713 | ||
e4423781 | 714 | /* Frontlight */ |
1da177e4 LT |
715 | locomo_writel(0, lchip->base + LOCOMO_FRONTLIGHT + LOCOMO_ALS); |
716 | locomo_writel(0, lchip->base + LOCOMO_FRONTLIGHT + LOCOMO_ALD); | |
4ebf2d00 | 717 | |
1da177e4 LT |
718 | /* Longtime timer */ |
719 | locomo_writel(0, lchip->base + LOCOMO_LTINT); | |
720 | /* SPI */ | |
721 | locomo_writel(0, lchip->base + LOCOMO_SPIIE); | |
722 | ||
723 | locomo_writel(6 + 8 + 320 + 30 - 10, lchip->base + LOCOMO_ASD); | |
724 | r = locomo_readl(lchip->base + LOCOMO_ASD); | |
725 | r |= 0x8000; | |
726 | locomo_writel(r, lchip->base + LOCOMO_ASD); | |
727 | ||
728 | locomo_writel(6 + 8 + 320 + 30 - 10 - 128 + 4, lchip->base + LOCOMO_HSD); | |
729 | r = locomo_readl(lchip->base + LOCOMO_HSD); | |
730 | r |= 0x8000; | |
731 | locomo_writel(r, lchip->base + LOCOMO_HSD); | |
732 | ||
733 | locomo_writel(128 / 8, lchip->base + LOCOMO_HSC); | |
734 | ||
735 | /* XON */ | |
736 | locomo_writel(0x80, lchip->base + LOCOMO_TADC); | |
737 | udelay(1000); | |
738 | /* CLK9MEN */ | |
739 | r = locomo_readl(lchip->base + LOCOMO_TADC); | |
740 | r |= 0x10; | |
741 | locomo_writel(r, lchip->base + LOCOMO_TADC); | |
742 | udelay(100); | |
743 | ||
744 | /* init DAC */ | |
745 | r = locomo_readl(lchip->base + LOCOMO_DAC); | |
746 | r |= LOCOMO_DAC_SCLOEB | LOCOMO_DAC_SDAOEB; | |
747 | locomo_writel(r, lchip->base + LOCOMO_DAC); | |
748 | ||
749 | r = locomo_readl(lchip->base + LOCOMO_VER); | |
750 | printk(KERN_INFO "LoCoMo Chip: %lu%lu\n", (r >> 8), (r & 0xff)); | |
751 | ||
752 | /* | |
753 | * The interrupt controller must be initialised before any | |
754 | * other device to ensure that the interrupts are available. | |
755 | */ | |
756 | if (lchip->irq != NO_IRQ) | |
757 | locomo_setup_irq(lchip); | |
758 | ||
759 | for (i = 0; i < ARRAY_SIZE(locomo_devices); i++) | |
760 | locomo_init_one_child(lchip, &locomo_devices[i]); | |
1da177e4 LT |
761 | return 0; |
762 | ||
763 | out: | |
764 | kfree(lchip); | |
765 | return ret; | |
766 | } | |
767 | ||
e24da5d3 | 768 | static int locomo_remove_child(struct device *dev, void *data) |
1da177e4 | 769 | { |
e24da5d3 PM |
770 | device_unregister(dev); |
771 | return 0; | |
772 | } | |
1da177e4 | 773 | |
e24da5d3 PM |
774 | static void __locomo_remove(struct locomo *lchip) |
775 | { | |
776 | device_for_each_child(lchip->dev, NULL, locomo_remove_child); | |
1da177e4 LT |
777 | |
778 | if (lchip->irq != NO_IRQ) { | |
779 | set_irq_chained_handler(lchip->irq, NULL); | |
780 | set_irq_data(lchip->irq, NULL); | |
781 | } | |
782 | ||
783 | iounmap(lchip->base); | |
784 | kfree(lchip); | |
785 | } | |
786 | ||
3ae5eaec | 787 | static int locomo_probe(struct platform_device *dev) |
1da177e4 | 788 | { |
1da177e4 LT |
789 | struct resource *mem; |
790 | int irq; | |
791 | ||
3ae5eaec | 792 | mem = platform_get_resource(dev, IORESOURCE_MEM, 0); |
1da177e4 LT |
793 | if (!mem) |
794 | return -EINVAL; | |
3ae5eaec | 795 | irq = platform_get_irq(dev, 0); |
48944738 DV |
796 | if (irq < 0) |
797 | return -ENXIO; | |
1da177e4 | 798 | |
3ae5eaec | 799 | return __locomo_probe(&dev->dev, mem, irq); |
1da177e4 LT |
800 | } |
801 | ||
3ae5eaec | 802 | static int locomo_remove(struct platform_device *dev) |
1da177e4 | 803 | { |
c35bf4a5 | 804 | struct locomo *lchip = platform_get_drvdata(dev); |
1da177e4 LT |
805 | |
806 | if (lchip) { | |
807 | __locomo_remove(lchip); | |
3ae5eaec | 808 | platform_set_drvdata(dev, NULL); |
1da177e4 LT |
809 | } |
810 | ||
811 | return 0; | |
812 | } | |
813 | ||
814 | /* | |
815 | * Not sure if this should be on the system bus or not yet. | |
816 | * We really want some way to register a system device at | |
817 | * the per-machine level, and then have this driver pick | |
818 | * up the registered devices. | |
819 | */ | |
3ae5eaec | 820 | static struct platform_driver locomo_device_driver = { |
1da177e4 LT |
821 | .probe = locomo_probe, |
822 | .remove = locomo_remove, | |
b38d950d JL |
823 | #ifdef CONFIG_PM |
824 | .suspend = locomo_suspend, | |
825 | .resume = locomo_resume, | |
826 | #endif | |
3ae5eaec RK |
827 | .driver = { |
828 | .name = "locomo", | |
829 | }, | |
1da177e4 LT |
830 | }; |
831 | ||
832 | /* | |
833 | * Get the parent device driver (us) structure | |
834 | * from a child function device | |
835 | */ | |
836 | static inline struct locomo *locomo_chip_driver(struct locomo_dev *ldev) | |
837 | { | |
838 | return (struct locomo *)dev_get_drvdata(ldev->dev.parent); | |
839 | } | |
840 | ||
8d48427e | 841 | void locomo_gpio_set_dir(struct device *dev, unsigned int bits, unsigned int dir) |
1da177e4 | 842 | { |
8d48427e | 843 | struct locomo *lchip = dev_get_drvdata(dev); |
1da177e4 LT |
844 | unsigned long flags; |
845 | unsigned int r; | |
846 | ||
8d48427e RP |
847 | if (!lchip) |
848 | return; | |
849 | ||
1da177e4 LT |
850 | spin_lock_irqsave(&lchip->lock, flags); |
851 | ||
852 | r = locomo_readl(lchip->base + LOCOMO_GPD); | |
2a52efb2 TK |
853 | if (dir) |
854 | r |= bits; | |
855 | else | |
856 | r &= ~bits; | |
1da177e4 LT |
857 | locomo_writel(r, lchip->base + LOCOMO_GPD); |
858 | ||
859 | r = locomo_readl(lchip->base + LOCOMO_GPE); | |
860 | if (dir) | |
861 | r |= bits; | |
862 | else | |
863 | r &= ~bits; | |
864 | locomo_writel(r, lchip->base + LOCOMO_GPE); | |
865 | ||
866 | spin_unlock_irqrestore(&lchip->lock, flags); | |
867 | } | |
868 | ||
8d48427e | 869 | int locomo_gpio_read_level(struct device *dev, unsigned int bits) |
1da177e4 | 870 | { |
8d48427e | 871 | struct locomo *lchip = dev_get_drvdata(dev); |
1da177e4 LT |
872 | unsigned long flags; |
873 | unsigned int ret; | |
874 | ||
8d48427e RP |
875 | if (!lchip) |
876 | return -ENODEV; | |
877 | ||
1da177e4 LT |
878 | spin_lock_irqsave(&lchip->lock, flags); |
879 | ret = locomo_readl(lchip->base + LOCOMO_GPL); | |
880 | spin_unlock_irqrestore(&lchip->lock, flags); | |
881 | ||
882 | ret &= bits; | |
883 | return ret; | |
884 | } | |
885 | ||
8d48427e | 886 | int locomo_gpio_read_output(struct device *dev, unsigned int bits) |
1da177e4 | 887 | { |
8d48427e | 888 | struct locomo *lchip = dev_get_drvdata(dev); |
1da177e4 LT |
889 | unsigned long flags; |
890 | unsigned int ret; | |
891 | ||
8d48427e RP |
892 | if (!lchip) |
893 | return -ENODEV; | |
894 | ||
1da177e4 LT |
895 | spin_lock_irqsave(&lchip->lock, flags); |
896 | ret = locomo_readl(lchip->base + LOCOMO_GPO); | |
897 | spin_unlock_irqrestore(&lchip->lock, flags); | |
898 | ||
899 | ret &= bits; | |
900 | return ret; | |
901 | } | |
902 | ||
8d48427e | 903 | void locomo_gpio_write(struct device *dev, unsigned int bits, unsigned int set) |
1da177e4 | 904 | { |
8d48427e | 905 | struct locomo *lchip = dev_get_drvdata(dev); |
1da177e4 LT |
906 | unsigned long flags; |
907 | unsigned int r; | |
908 | ||
8d48427e RP |
909 | if (!lchip) |
910 | return; | |
911 | ||
1da177e4 LT |
912 | spin_lock_irqsave(&lchip->lock, flags); |
913 | ||
914 | r = locomo_readl(lchip->base + LOCOMO_GPO); | |
915 | if (set) | |
916 | r |= bits; | |
917 | else | |
918 | r &= ~bits; | |
919 | locomo_writel(r, lchip->base + LOCOMO_GPO); | |
920 | ||
921 | spin_unlock_irqrestore(&lchip->lock, flags); | |
922 | } | |
923 | ||
924 | static void locomo_m62332_sendbit(void *mapbase, int bit) | |
925 | { | |
926 | unsigned int r; | |
927 | ||
928 | r = locomo_readl(mapbase + LOCOMO_DAC); | |
929 | r &= ~(LOCOMO_DAC_SCLOEB); | |
930 | locomo_writel(r, mapbase + LOCOMO_DAC); | |
931 | udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */ | |
932 | udelay(DAC_DATA_HOLD_TIME); /* 300 nsec */ | |
933 | r = locomo_readl(mapbase + LOCOMO_DAC); | |
934 | r &= ~(LOCOMO_DAC_SCLOEB); | |
935 | locomo_writel(r, mapbase + LOCOMO_DAC); | |
936 | udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */ | |
937 | udelay(DAC_SCL_LOW_HOLD_TIME); /* 4.7 usec */ | |
938 | ||
939 | if (bit & 1) { | |
940 | r = locomo_readl(mapbase + LOCOMO_DAC); | |
941 | r |= LOCOMO_DAC_SDAOEB; | |
942 | locomo_writel(r, mapbase + LOCOMO_DAC); | |
943 | udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */ | |
944 | } else { | |
945 | r = locomo_readl(mapbase + LOCOMO_DAC); | |
946 | r &= ~(LOCOMO_DAC_SDAOEB); | |
947 | locomo_writel(r, mapbase + LOCOMO_DAC); | |
948 | udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */ | |
949 | } | |
950 | ||
951 | udelay(DAC_DATA_SETUP_TIME); /* 250 nsec */ | |
952 | r = locomo_readl(mapbase + LOCOMO_DAC); | |
953 | r |= LOCOMO_DAC_SCLOEB; | |
954 | locomo_writel(r, mapbase + LOCOMO_DAC); | |
955 | udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */ | |
956 | udelay(DAC_SCL_HIGH_HOLD_TIME); /* 4.0 usec */ | |
957 | } | |
958 | ||
959 | void locomo_m62332_senddata(struct locomo_dev *ldev, unsigned int dac_data, int channel) | |
960 | { | |
961 | struct locomo *lchip = locomo_chip_driver(ldev); | |
962 | int i; | |
963 | unsigned char data; | |
964 | unsigned int r; | |
965 | void *mapbase = lchip->base; | |
966 | unsigned long flags; | |
967 | ||
968 | spin_lock_irqsave(&lchip->lock, flags); | |
969 | ||
970 | /* Start */ | |
971 | udelay(DAC_BUS_FREE_TIME); /* 5.0 usec */ | |
972 | r = locomo_readl(mapbase + LOCOMO_DAC); | |
973 | r |= LOCOMO_DAC_SCLOEB | LOCOMO_DAC_SDAOEB; | |
974 | locomo_writel(r, mapbase + LOCOMO_DAC); | |
975 | udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */ | |
976 | udelay(DAC_SCL_HIGH_HOLD_TIME); /* 4.0 usec */ | |
977 | r = locomo_readl(mapbase + LOCOMO_DAC); | |
978 | r &= ~(LOCOMO_DAC_SDAOEB); | |
979 | locomo_writel(r, mapbase + LOCOMO_DAC); | |
980 | udelay(DAC_START_HOLD_TIME); /* 5.0 usec */ | |
981 | udelay(DAC_DATA_HOLD_TIME); /* 300 nsec */ | |
982 | ||
983 | /* Send slave address and W bit (LSB is W bit) */ | |
984 | data = (M62332_SLAVE_ADDR << 1) | M62332_W_BIT; | |
985 | for (i = 1; i <= 8; i++) { | |
986 | locomo_m62332_sendbit(mapbase, data >> (8 - i)); | |
987 | } | |
988 | ||
989 | /* Check A bit */ | |
990 | r = locomo_readl(mapbase + LOCOMO_DAC); | |
991 | r &= ~(LOCOMO_DAC_SCLOEB); | |
992 | locomo_writel(r, mapbase + LOCOMO_DAC); | |
993 | udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */ | |
994 | udelay(DAC_SCL_LOW_HOLD_TIME); /* 4.7 usec */ | |
995 | r = locomo_readl(mapbase + LOCOMO_DAC); | |
996 | r &= ~(LOCOMO_DAC_SDAOEB); | |
997 | locomo_writel(r, mapbase + LOCOMO_DAC); | |
998 | udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */ | |
999 | r = locomo_readl(mapbase + LOCOMO_DAC); | |
1000 | r |= LOCOMO_DAC_SCLOEB; | |
1001 | locomo_writel(r, mapbase + LOCOMO_DAC); | |
1002 | udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */ | |
1003 | udelay(DAC_SCL_HIGH_HOLD_TIME); /* 4.7 usec */ | |
1004 | if (locomo_readl(mapbase + LOCOMO_DAC) & LOCOMO_DAC_SDAOEB) { /* High is error */ | |
1005 | printk(KERN_WARNING "locomo: m62332_senddata Error 1\n"); | |
1006 | return; | |
1007 | } | |
1008 | ||
1009 | /* Send Sub address (LSB is channel select) */ | |
1010 | /* channel = 0 : ch1 select */ | |
1011 | /* = 1 : ch2 select */ | |
1012 | data = M62332_SUB_ADDR + channel; | |
1013 | for (i = 1; i <= 8; i++) { | |
1014 | locomo_m62332_sendbit(mapbase, data >> (8 - i)); | |
1015 | } | |
1016 | ||
1017 | /* Check A bit */ | |
1018 | r = locomo_readl(mapbase + LOCOMO_DAC); | |
1019 | r &= ~(LOCOMO_DAC_SCLOEB); | |
1020 | locomo_writel(r, mapbase + LOCOMO_DAC); | |
1021 | udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */ | |
1022 | udelay(DAC_SCL_LOW_HOLD_TIME); /* 4.7 usec */ | |
1023 | r = locomo_readl(mapbase + LOCOMO_DAC); | |
1024 | r &= ~(LOCOMO_DAC_SDAOEB); | |
1025 | locomo_writel(r, mapbase + LOCOMO_DAC); | |
1026 | udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */ | |
1027 | r = locomo_readl(mapbase + LOCOMO_DAC); | |
1028 | r |= LOCOMO_DAC_SCLOEB; | |
1029 | locomo_writel(r, mapbase + LOCOMO_DAC); | |
1030 | udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */ | |
1031 | udelay(DAC_SCL_HIGH_HOLD_TIME); /* 4.7 usec */ | |
1032 | if (locomo_readl(mapbase + LOCOMO_DAC) & LOCOMO_DAC_SDAOEB) { /* High is error */ | |
1033 | printk(KERN_WARNING "locomo: m62332_senddata Error 2\n"); | |
1034 | return; | |
1035 | } | |
1036 | ||
1037 | /* Send DAC data */ | |
1038 | for (i = 1; i <= 8; i++) { | |
1039 | locomo_m62332_sendbit(mapbase, dac_data >> (8 - i)); | |
1040 | } | |
1041 | ||
1042 | /* Check A bit */ | |
1043 | r = locomo_readl(mapbase + LOCOMO_DAC); | |
1044 | r &= ~(LOCOMO_DAC_SCLOEB); | |
1045 | locomo_writel(r, mapbase + LOCOMO_DAC); | |
1046 | udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */ | |
1047 | udelay(DAC_SCL_LOW_HOLD_TIME); /* 4.7 usec */ | |
1048 | r = locomo_readl(mapbase + LOCOMO_DAC); | |
1049 | r &= ~(LOCOMO_DAC_SDAOEB); | |
1050 | locomo_writel(r, mapbase + LOCOMO_DAC); | |
1051 | udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */ | |
1052 | r = locomo_readl(mapbase + LOCOMO_DAC); | |
1053 | r |= LOCOMO_DAC_SCLOEB; | |
1054 | locomo_writel(r, mapbase + LOCOMO_DAC); | |
1055 | udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */ | |
1056 | udelay(DAC_SCL_HIGH_HOLD_TIME); /* 4.7 usec */ | |
1057 | if (locomo_readl(mapbase + LOCOMO_DAC) & LOCOMO_DAC_SDAOEB) { /* High is error */ | |
1058 | printk(KERN_WARNING "locomo: m62332_senddata Error 3\n"); | |
1059 | return; | |
1060 | } | |
1061 | ||
1062 | /* stop */ | |
1063 | r = locomo_readl(mapbase + LOCOMO_DAC); | |
1064 | r &= ~(LOCOMO_DAC_SCLOEB); | |
1065 | locomo_writel(r, mapbase + LOCOMO_DAC); | |
1066 | udelay(DAC_LOW_SETUP_TIME); /* 300 nsec */ | |
1067 | udelay(DAC_SCL_LOW_HOLD_TIME); /* 4.7 usec */ | |
1068 | r = locomo_readl(mapbase + LOCOMO_DAC); | |
1069 | r |= LOCOMO_DAC_SCLOEB; | |
1070 | locomo_writel(r, mapbase + LOCOMO_DAC); | |
1071 | udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */ | |
1072 | udelay(DAC_SCL_HIGH_HOLD_TIME); /* 4 usec */ | |
1073 | r = locomo_readl(mapbase + LOCOMO_DAC); | |
1074 | r |= LOCOMO_DAC_SDAOEB; | |
1075 | locomo_writel(r, mapbase + LOCOMO_DAC); | |
1076 | udelay(DAC_HIGH_SETUP_TIME); /* 1000 nsec */ | |
1077 | udelay(DAC_SCL_HIGH_HOLD_TIME); /* 4 usec */ | |
1078 | ||
1079 | r = locomo_readl(mapbase + LOCOMO_DAC); | |
1080 | r |= LOCOMO_DAC_SCLOEB | LOCOMO_DAC_SDAOEB; | |
1081 | locomo_writel(r, mapbase + LOCOMO_DAC); | |
1082 | udelay(DAC_LOW_SETUP_TIME); /* 1000 nsec */ | |
1083 | udelay(DAC_SCL_LOW_HOLD_TIME); /* 4.7 usec */ | |
1084 | ||
1085 | spin_unlock_irqrestore(&lchip->lock, flags); | |
1086 | } | |
1087 | ||
e4423781 RP |
1088 | /* |
1089 | * Frontlight control | |
1090 | */ | |
1091 | ||
1092 | static struct locomo *locomo_chip_driver(struct locomo_dev *ldev); | |
1093 | ||
1094 | void locomo_frontlight_set(struct locomo_dev *dev, int duty, int vr, int bpwf) | |
1095 | { | |
1096 | unsigned long flags; | |
1097 | struct locomo *lchip = locomo_chip_driver(dev); | |
1098 | ||
1099 | if (vr) | |
8d48427e | 1100 | locomo_gpio_write(dev->dev.parent, LOCOMO_GPIO_FL_VR, 1); |
e4423781 | 1101 | else |
8d48427e | 1102 | locomo_gpio_write(dev->dev.parent, LOCOMO_GPIO_FL_VR, 0); |
e4423781 RP |
1103 | |
1104 | spin_lock_irqsave(&lchip->lock, flags); | |
1105 | locomo_writel(bpwf, lchip->base + LOCOMO_FRONTLIGHT + LOCOMO_ALS); | |
1106 | udelay(100); | |
1107 | locomo_writel(duty, lchip->base + LOCOMO_FRONTLIGHT + LOCOMO_ALD); | |
1108 | locomo_writel(bpwf | LOCOMO_ALC_EN, lchip->base + LOCOMO_FRONTLIGHT + LOCOMO_ALS); | |
1109 | spin_unlock_irqrestore(&lchip->lock, flags); | |
1110 | } | |
9179825c | 1111 | EXPORT_SYMBOL(locomo_frontlight_set); |
e4423781 | 1112 | |
1da177e4 LT |
1113 | /* |
1114 | * LoCoMo "Register Access Bus." | |
1115 | * | |
1116 | * We model this as a regular bus type, and hang devices directly | |
1117 | * off this. | |
1118 | */ | |
1119 | static int locomo_match(struct device *_dev, struct device_driver *_drv) | |
1120 | { | |
1121 | struct locomo_dev *dev = LOCOMO_DEV(_dev); | |
1122 | struct locomo_driver *drv = LOCOMO_DRV(_drv); | |
1123 | ||
1124 | return dev->devid == drv->devid; | |
1125 | } | |
1126 | ||
1127 | static int locomo_bus_suspend(struct device *dev, pm_message_t state) | |
1128 | { | |
1129 | struct locomo_dev *ldev = LOCOMO_DEV(dev); | |
1130 | struct locomo_driver *drv = LOCOMO_DRV(dev->driver); | |
1131 | int ret = 0; | |
1132 | ||
1133 | if (drv && drv->suspend) | |
1134 | ret = drv->suspend(ldev, state); | |
1135 | return ret; | |
1136 | } | |
1137 | ||
1138 | static int locomo_bus_resume(struct device *dev) | |
1139 | { | |
1140 | struct locomo_dev *ldev = LOCOMO_DEV(dev); | |
1141 | struct locomo_driver *drv = LOCOMO_DRV(dev->driver); | |
1142 | int ret = 0; | |
1143 | ||
1144 | if (drv && drv->resume) | |
1145 | ret = drv->resume(ldev); | |
1146 | return ret; | |
1147 | } | |
1148 | ||
1149 | static int locomo_bus_probe(struct device *dev) | |
1150 | { | |
1151 | struct locomo_dev *ldev = LOCOMO_DEV(dev); | |
1152 | struct locomo_driver *drv = LOCOMO_DRV(dev->driver); | |
1153 | int ret = -ENODEV; | |
1154 | ||
1155 | if (drv->probe) | |
1156 | ret = drv->probe(ldev); | |
1157 | return ret; | |
1158 | } | |
1159 | ||
1160 | static int locomo_bus_remove(struct device *dev) | |
1161 | { | |
1162 | struct locomo_dev *ldev = LOCOMO_DEV(dev); | |
1163 | struct locomo_driver *drv = LOCOMO_DRV(dev->driver); | |
1164 | int ret = 0; | |
1165 | ||
1166 | if (drv->remove) | |
1167 | ret = drv->remove(ldev); | |
1168 | return ret; | |
1169 | } | |
1170 | ||
1171 | struct bus_type locomo_bus_type = { | |
1172 | .name = "locomo-bus", | |
1173 | .match = locomo_match, | |
306955be RK |
1174 | .probe = locomo_bus_probe, |
1175 | .remove = locomo_bus_remove, | |
1da177e4 LT |
1176 | .suspend = locomo_bus_suspend, |
1177 | .resume = locomo_bus_resume, | |
1178 | }; | |
1179 | ||
1180 | int locomo_driver_register(struct locomo_driver *driver) | |
1181 | { | |
1da177e4 LT |
1182 | driver->drv.bus = &locomo_bus_type; |
1183 | return driver_register(&driver->drv); | |
1184 | } | |
1185 | ||
1186 | void locomo_driver_unregister(struct locomo_driver *driver) | |
1187 | { | |
1188 | driver_unregister(&driver->drv); | |
1189 | } | |
1190 | ||
1191 | static int __init locomo_init(void) | |
1192 | { | |
1193 | int ret = bus_register(&locomo_bus_type); | |
1194 | if (ret == 0) | |
3ae5eaec | 1195 | platform_driver_register(&locomo_device_driver); |
1da177e4 LT |
1196 | return ret; |
1197 | } | |
1198 | ||
1199 | static void __exit locomo_exit(void) | |
1200 | { | |
3ae5eaec | 1201 | platform_driver_unregister(&locomo_device_driver); |
1da177e4 LT |
1202 | bus_unregister(&locomo_bus_type); |
1203 | } | |
1204 | ||
1205 | module_init(locomo_init); | |
1206 | module_exit(locomo_exit); | |
1207 | ||
1208 | MODULE_DESCRIPTION("Sharp LoCoMo core driver"); | |
1209 | MODULE_LICENSE("GPL"); | |
1210 | MODULE_AUTHOR("John Lenz <lenz@cs.wisc.edu>"); | |
1211 | ||
1212 | EXPORT_SYMBOL(locomo_driver_register); | |
1213 | EXPORT_SYMBOL(locomo_driver_unregister); | |
1214 | EXPORT_SYMBOL(locomo_gpio_set_dir); | |
1215 | EXPORT_SYMBOL(locomo_gpio_read_level); | |
1216 | EXPORT_SYMBOL(locomo_gpio_read_output); | |
1217 | EXPORT_SYMBOL(locomo_gpio_write); | |
1218 | EXPORT_SYMBOL(locomo_m62332_senddata); |