Commit | Line | Data |
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c4a0208f | 1 | /* |
da03d740 | 2 | * GPIO driver for LPC32xx SoC |
c4a0208f KW |
3 | * |
4 | * Author: Kevin Wells <kevin.wells@nxp.com> | |
5 | * | |
6 | * Copyright (C) 2010 NXP Semiconductors | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | */ | |
18 | ||
19 | #include <linux/kernel.h> | |
20 | #include <linux/init.h> | |
21 | #include <linux/io.h> | |
22 | #include <linux/errno.h> | |
11975f9e | 23 | #include <linux/gpio/driver.h> |
831cbd7a | 24 | #include <linux/of.h> |
e92935e1 RS |
25 | #include <linux/platform_device.h> |
26 | #include <linux/module.h> | |
c4a0208f KW |
27 | |
28 | #include <mach/hardware.h> | |
29 | #include <mach/platform.h> | |
c4a0208f KW |
30 | |
31 | #define LPC32XX_GPIO_P3_INP_STATE _GPREG(0x000) | |
32 | #define LPC32XX_GPIO_P3_OUTP_SET _GPREG(0x004) | |
33 | #define LPC32XX_GPIO_P3_OUTP_CLR _GPREG(0x008) | |
34 | #define LPC32XX_GPIO_P3_OUTP_STATE _GPREG(0x00C) | |
35 | #define LPC32XX_GPIO_P2_DIR_SET _GPREG(0x010) | |
36 | #define LPC32XX_GPIO_P2_DIR_CLR _GPREG(0x014) | |
37 | #define LPC32XX_GPIO_P2_DIR_STATE _GPREG(0x018) | |
38 | #define LPC32XX_GPIO_P2_INP_STATE _GPREG(0x01C) | |
39 | #define LPC32XX_GPIO_P2_OUTP_SET _GPREG(0x020) | |
40 | #define LPC32XX_GPIO_P2_OUTP_CLR _GPREG(0x024) | |
41 | #define LPC32XX_GPIO_P2_MUX_SET _GPREG(0x028) | |
42 | #define LPC32XX_GPIO_P2_MUX_CLR _GPREG(0x02C) | |
43 | #define LPC32XX_GPIO_P2_MUX_STATE _GPREG(0x030) | |
44 | #define LPC32XX_GPIO_P0_INP_STATE _GPREG(0x040) | |
45 | #define LPC32XX_GPIO_P0_OUTP_SET _GPREG(0x044) | |
46 | #define LPC32XX_GPIO_P0_OUTP_CLR _GPREG(0x048) | |
47 | #define LPC32XX_GPIO_P0_OUTP_STATE _GPREG(0x04C) | |
48 | #define LPC32XX_GPIO_P0_DIR_SET _GPREG(0x050) | |
49 | #define LPC32XX_GPIO_P0_DIR_CLR _GPREG(0x054) | |
50 | #define LPC32XX_GPIO_P0_DIR_STATE _GPREG(0x058) | |
51 | #define LPC32XX_GPIO_P1_INP_STATE _GPREG(0x060) | |
52 | #define LPC32XX_GPIO_P1_OUTP_SET _GPREG(0x064) | |
53 | #define LPC32XX_GPIO_P1_OUTP_CLR _GPREG(0x068) | |
54 | #define LPC32XX_GPIO_P1_OUTP_STATE _GPREG(0x06C) | |
55 | #define LPC32XX_GPIO_P1_DIR_SET _GPREG(0x070) | |
56 | #define LPC32XX_GPIO_P1_DIR_CLR _GPREG(0x074) | |
57 | #define LPC32XX_GPIO_P1_DIR_STATE _GPREG(0x078) | |
58 | ||
59 | #define GPIO012_PIN_TO_BIT(x) (1 << (x)) | |
60 | #define GPIO3_PIN_TO_BIT(x) (1 << ((x) + 25)) | |
61 | #define GPO3_PIN_TO_BIT(x) (1 << (x)) | |
62 | #define GPIO012_PIN_IN_SEL(x, y) (((x) >> (y)) & 1) | |
63 | #define GPIO3_PIN_IN_SHIFT(x) ((x) == 5 ? 24 : 10 + (x)) | |
8e5fb37b | 64 | #define GPIO3_PIN_IN_SEL(x, y) (((x) >> GPIO3_PIN_IN_SHIFT(y)) & 1) |
c4a0208f KW |
65 | #define GPIO3_PIN5_IN_SEL(x) (((x) >> 24) & 1) |
66 | #define GPI3_PIN_IN_SEL(x, y) (((x) >> (y)) & 1) | |
46158aad | 67 | #define GPO3_PIN_IN_SEL(x, y) (((x) >> (y)) & 1) |
c4a0208f | 68 | |
14bf873e VZ |
69 | #define LPC32XX_GPIO_P0_MAX 8 |
70 | #define LPC32XX_GPIO_P1_MAX 24 | |
71 | #define LPC32XX_GPIO_P2_MAX 13 | |
72 | #define LPC32XX_GPIO_P3_MAX 6 | |
73 | #define LPC32XX_GPI_P3_MAX 29 | |
74 | #define LPC32XX_GPO_P3_MAX 24 | |
75 | ||
76 | #define LPC32XX_GPIO_P0_GRP 0 | |
77 | #define LPC32XX_GPIO_P1_GRP (LPC32XX_GPIO_P0_GRP + LPC32XX_GPIO_P0_MAX) | |
78 | #define LPC32XX_GPIO_P2_GRP (LPC32XX_GPIO_P1_GRP + LPC32XX_GPIO_P1_MAX) | |
79 | #define LPC32XX_GPIO_P3_GRP (LPC32XX_GPIO_P2_GRP + LPC32XX_GPIO_P2_MAX) | |
80 | #define LPC32XX_GPI_P3_GRP (LPC32XX_GPIO_P3_GRP + LPC32XX_GPIO_P3_MAX) | |
81 | #define LPC32XX_GPO_P3_GRP (LPC32XX_GPI_P3_GRP + LPC32XX_GPI_P3_MAX) | |
82 | ||
c4a0208f KW |
83 | struct gpio_regs { |
84 | void __iomem *inp_state; | |
46158aad | 85 | void __iomem *outp_state; |
c4a0208f KW |
86 | void __iomem *outp_set; |
87 | void __iomem *outp_clr; | |
88 | void __iomem *dir_set; | |
89 | void __iomem *dir_clr; | |
90 | }; | |
91 | ||
92 | /* | |
93 | * GPIO names | |
94 | */ | |
95 | static const char *gpio_p0_names[LPC32XX_GPIO_P0_MAX] = { | |
96 | "p0.0", "p0.1", "p0.2", "p0.3", | |
97 | "p0.4", "p0.5", "p0.6", "p0.7" | |
98 | }; | |
99 | ||
100 | static const char *gpio_p1_names[LPC32XX_GPIO_P1_MAX] = { | |
101 | "p1.0", "p1.1", "p1.2", "p1.3", | |
102 | "p1.4", "p1.5", "p1.6", "p1.7", | |
103 | "p1.8", "p1.9", "p1.10", "p1.11", | |
104 | "p1.12", "p1.13", "p1.14", "p1.15", | |
105 | "p1.16", "p1.17", "p1.18", "p1.19", | |
106 | "p1.20", "p1.21", "p1.22", "p1.23", | |
107 | }; | |
108 | ||
109 | static const char *gpio_p2_names[LPC32XX_GPIO_P2_MAX] = { | |
110 | "p2.0", "p2.1", "p2.2", "p2.3", | |
111 | "p2.4", "p2.5", "p2.6", "p2.7", | |
112 | "p2.8", "p2.9", "p2.10", "p2.11", | |
113 | "p2.12" | |
114 | }; | |
115 | ||
116 | static const char *gpio_p3_names[LPC32XX_GPIO_P3_MAX] = { | |
95120d5d | 117 | "gpio00", "gpio01", "gpio02", "gpio03", |
c4a0208f KW |
118 | "gpio04", "gpio05" |
119 | }; | |
120 | ||
121 | static const char *gpi_p3_names[LPC32XX_GPI_P3_MAX] = { | |
122 | "gpi00", "gpi01", "gpi02", "gpi03", | |
123 | "gpi04", "gpi05", "gpi06", "gpi07", | |
124 | "gpi08", "gpi09", NULL, NULL, | |
125 | NULL, NULL, NULL, "gpi15", | |
126 | "gpi16", "gpi17", "gpi18", "gpi19", | |
127 | "gpi20", "gpi21", "gpi22", "gpi23", | |
71fde000 RS |
128 | "gpi24", "gpi25", "gpi26", "gpi27", |
129 | "gpi28" | |
c4a0208f KW |
130 | }; |
131 | ||
132 | static const char *gpo_p3_names[LPC32XX_GPO_P3_MAX] = { | |
133 | "gpo00", "gpo01", "gpo02", "gpo03", | |
134 | "gpo04", "gpo05", "gpo06", "gpo07", | |
135 | "gpo08", "gpo09", "gpo10", "gpo11", | |
136 | "gpo12", "gpo13", "gpo14", "gpo15", | |
137 | "gpo16", "gpo17", "gpo18", "gpo19", | |
138 | "gpo20", "gpo21", "gpo22", "gpo23" | |
139 | }; | |
140 | ||
141 | static struct gpio_regs gpio_grp_regs_p0 = { | |
142 | .inp_state = LPC32XX_GPIO_P0_INP_STATE, | |
143 | .outp_set = LPC32XX_GPIO_P0_OUTP_SET, | |
144 | .outp_clr = LPC32XX_GPIO_P0_OUTP_CLR, | |
145 | .dir_set = LPC32XX_GPIO_P0_DIR_SET, | |
146 | .dir_clr = LPC32XX_GPIO_P0_DIR_CLR, | |
147 | }; | |
148 | ||
149 | static struct gpio_regs gpio_grp_regs_p1 = { | |
150 | .inp_state = LPC32XX_GPIO_P1_INP_STATE, | |
151 | .outp_set = LPC32XX_GPIO_P1_OUTP_SET, | |
152 | .outp_clr = LPC32XX_GPIO_P1_OUTP_CLR, | |
153 | .dir_set = LPC32XX_GPIO_P1_DIR_SET, | |
154 | .dir_clr = LPC32XX_GPIO_P1_DIR_CLR, | |
155 | }; | |
156 | ||
157 | static struct gpio_regs gpio_grp_regs_p2 = { | |
158 | .inp_state = LPC32XX_GPIO_P2_INP_STATE, | |
159 | .outp_set = LPC32XX_GPIO_P2_OUTP_SET, | |
160 | .outp_clr = LPC32XX_GPIO_P2_OUTP_CLR, | |
161 | .dir_set = LPC32XX_GPIO_P2_DIR_SET, | |
162 | .dir_clr = LPC32XX_GPIO_P2_DIR_CLR, | |
163 | }; | |
164 | ||
165 | static struct gpio_regs gpio_grp_regs_p3 = { | |
166 | .inp_state = LPC32XX_GPIO_P3_INP_STATE, | |
46158aad | 167 | .outp_state = LPC32XX_GPIO_P3_OUTP_STATE, |
c4a0208f KW |
168 | .outp_set = LPC32XX_GPIO_P3_OUTP_SET, |
169 | .outp_clr = LPC32XX_GPIO_P3_OUTP_CLR, | |
170 | .dir_set = LPC32XX_GPIO_P2_DIR_SET, | |
171 | .dir_clr = LPC32XX_GPIO_P2_DIR_CLR, | |
172 | }; | |
173 | ||
174 | struct lpc32xx_gpio_chip { | |
175 | struct gpio_chip chip; | |
176 | struct gpio_regs *gpio_grp; | |
177 | }; | |
178 | ||
c4a0208f KW |
179 | static void __set_gpio_dir_p012(struct lpc32xx_gpio_chip *group, |
180 | unsigned pin, int input) | |
181 | { | |
182 | if (input) | |
183 | __raw_writel(GPIO012_PIN_TO_BIT(pin), | |
184 | group->gpio_grp->dir_clr); | |
185 | else | |
186 | __raw_writel(GPIO012_PIN_TO_BIT(pin), | |
187 | group->gpio_grp->dir_set); | |
188 | } | |
189 | ||
190 | static void __set_gpio_dir_p3(struct lpc32xx_gpio_chip *group, | |
191 | unsigned pin, int input) | |
192 | { | |
193 | u32 u = GPIO3_PIN_TO_BIT(pin); | |
194 | ||
195 | if (input) | |
196 | __raw_writel(u, group->gpio_grp->dir_clr); | |
197 | else | |
198 | __raw_writel(u, group->gpio_grp->dir_set); | |
199 | } | |
200 | ||
201 | static void __set_gpio_level_p012(struct lpc32xx_gpio_chip *group, | |
202 | unsigned pin, int high) | |
203 | { | |
204 | if (high) | |
205 | __raw_writel(GPIO012_PIN_TO_BIT(pin), | |
206 | group->gpio_grp->outp_set); | |
207 | else | |
208 | __raw_writel(GPIO012_PIN_TO_BIT(pin), | |
209 | group->gpio_grp->outp_clr); | |
210 | } | |
211 | ||
212 | static void __set_gpio_level_p3(struct lpc32xx_gpio_chip *group, | |
213 | unsigned pin, int high) | |
214 | { | |
215 | u32 u = GPIO3_PIN_TO_BIT(pin); | |
216 | ||
217 | if (high) | |
218 | __raw_writel(u, group->gpio_grp->outp_set); | |
219 | else | |
220 | __raw_writel(u, group->gpio_grp->outp_clr); | |
221 | } | |
222 | ||
223 | static void __set_gpo_level_p3(struct lpc32xx_gpio_chip *group, | |
224 | unsigned pin, int high) | |
225 | { | |
226 | if (high) | |
227 | __raw_writel(GPO3_PIN_TO_BIT(pin), group->gpio_grp->outp_set); | |
228 | else | |
229 | __raw_writel(GPO3_PIN_TO_BIT(pin), group->gpio_grp->outp_clr); | |
230 | } | |
231 | ||
232 | static int __get_gpio_state_p012(struct lpc32xx_gpio_chip *group, | |
233 | unsigned pin) | |
234 | { | |
235 | return GPIO012_PIN_IN_SEL(__raw_readl(group->gpio_grp->inp_state), | |
236 | pin); | |
237 | } | |
238 | ||
239 | static int __get_gpio_state_p3(struct lpc32xx_gpio_chip *group, | |
240 | unsigned pin) | |
241 | { | |
242 | int state = __raw_readl(group->gpio_grp->inp_state); | |
243 | ||
244 | /* | |
245 | * P3 GPIO pin input mapping is not contiguous, GPIOP3-0..4 is mapped | |
246 | * to bits 10..14, while GPIOP3-5 is mapped to bit 24. | |
247 | */ | |
248 | return GPIO3_PIN_IN_SEL(state, pin); | |
249 | } | |
250 | ||
251 | static int __get_gpi_state_p3(struct lpc32xx_gpio_chip *group, | |
252 | unsigned pin) | |
253 | { | |
254 | return GPI3_PIN_IN_SEL(__raw_readl(group->gpio_grp->inp_state), pin); | |
255 | } | |
256 | ||
46158aad RS |
257 | static int __get_gpo_state_p3(struct lpc32xx_gpio_chip *group, |
258 | unsigned pin) | |
259 | { | |
260 | return GPO3_PIN_IN_SEL(__raw_readl(group->gpio_grp->outp_state), pin); | |
261 | } | |
262 | ||
c4a0208f | 263 | /* |
7fd2bf3d | 264 | * GPIO primitives. |
c4a0208f KW |
265 | */ |
266 | static int lpc32xx_gpio_dir_input_p012(struct gpio_chip *chip, | |
267 | unsigned pin) | |
268 | { | |
a9bc97e4 | 269 | struct lpc32xx_gpio_chip *group = gpiochip_get_data(chip); |
c4a0208f KW |
270 | |
271 | __set_gpio_dir_p012(group, pin, 1); | |
272 | ||
273 | return 0; | |
274 | } | |
275 | ||
276 | static int lpc32xx_gpio_dir_input_p3(struct gpio_chip *chip, | |
277 | unsigned pin) | |
278 | { | |
a9bc97e4 | 279 | struct lpc32xx_gpio_chip *group = gpiochip_get_data(chip); |
c4a0208f KW |
280 | |
281 | __set_gpio_dir_p3(group, pin, 1); | |
282 | ||
283 | return 0; | |
284 | } | |
285 | ||
286 | static int lpc32xx_gpio_dir_in_always(struct gpio_chip *chip, | |
287 | unsigned pin) | |
288 | { | |
289 | return 0; | |
290 | } | |
291 | ||
292 | static int lpc32xx_gpio_get_value_p012(struct gpio_chip *chip, unsigned pin) | |
293 | { | |
a9bc97e4 | 294 | struct lpc32xx_gpio_chip *group = gpiochip_get_data(chip); |
c4a0208f | 295 | |
2e6d8456 | 296 | return !!__get_gpio_state_p012(group, pin); |
c4a0208f KW |
297 | } |
298 | ||
299 | static int lpc32xx_gpio_get_value_p3(struct gpio_chip *chip, unsigned pin) | |
300 | { | |
a9bc97e4 | 301 | struct lpc32xx_gpio_chip *group = gpiochip_get_data(chip); |
c4a0208f | 302 | |
2e6d8456 | 303 | return !!__get_gpio_state_p3(group, pin); |
c4a0208f KW |
304 | } |
305 | ||
306 | static int lpc32xx_gpi_get_value(struct gpio_chip *chip, unsigned pin) | |
307 | { | |
a9bc97e4 | 308 | struct lpc32xx_gpio_chip *group = gpiochip_get_data(chip); |
c4a0208f | 309 | |
2e6d8456 | 310 | return !!__get_gpi_state_p3(group, pin); |
c4a0208f KW |
311 | } |
312 | ||
313 | static int lpc32xx_gpio_dir_output_p012(struct gpio_chip *chip, unsigned pin, | |
314 | int value) | |
315 | { | |
a9bc97e4 | 316 | struct lpc32xx_gpio_chip *group = gpiochip_get_data(chip); |
c4a0208f | 317 | |
b1268d37 | 318 | __set_gpio_level_p012(group, pin, value); |
c4a0208f KW |
319 | __set_gpio_dir_p012(group, pin, 0); |
320 | ||
321 | return 0; | |
322 | } | |
323 | ||
324 | static int lpc32xx_gpio_dir_output_p3(struct gpio_chip *chip, unsigned pin, | |
325 | int value) | |
326 | { | |
a9bc97e4 | 327 | struct lpc32xx_gpio_chip *group = gpiochip_get_data(chip); |
c4a0208f | 328 | |
b1268d37 | 329 | __set_gpio_level_p3(group, pin, value); |
c4a0208f KW |
330 | __set_gpio_dir_p3(group, pin, 0); |
331 | ||
332 | return 0; | |
333 | } | |
334 | ||
335 | static int lpc32xx_gpio_dir_out_always(struct gpio_chip *chip, unsigned pin, | |
336 | int value) | |
337 | { | |
a9bc97e4 | 338 | struct lpc32xx_gpio_chip *group = gpiochip_get_data(chip); |
b1268d37 RS |
339 | |
340 | __set_gpo_level_p3(group, pin, value); | |
c4a0208f KW |
341 | return 0; |
342 | } | |
343 | ||
344 | static void lpc32xx_gpio_set_value_p012(struct gpio_chip *chip, unsigned pin, | |
345 | int value) | |
346 | { | |
a9bc97e4 | 347 | struct lpc32xx_gpio_chip *group = gpiochip_get_data(chip); |
c4a0208f KW |
348 | |
349 | __set_gpio_level_p012(group, pin, value); | |
350 | } | |
351 | ||
352 | static void lpc32xx_gpio_set_value_p3(struct gpio_chip *chip, unsigned pin, | |
353 | int value) | |
354 | { | |
a9bc97e4 | 355 | struct lpc32xx_gpio_chip *group = gpiochip_get_data(chip); |
c4a0208f KW |
356 | |
357 | __set_gpio_level_p3(group, pin, value); | |
358 | } | |
359 | ||
360 | static void lpc32xx_gpo_set_value(struct gpio_chip *chip, unsigned pin, | |
361 | int value) | |
362 | { | |
a9bc97e4 | 363 | struct lpc32xx_gpio_chip *group = gpiochip_get_data(chip); |
c4a0208f KW |
364 | |
365 | __set_gpo_level_p3(group, pin, value); | |
366 | } | |
367 | ||
46158aad RS |
368 | static int lpc32xx_gpo_get_value(struct gpio_chip *chip, unsigned pin) |
369 | { | |
a9bc97e4 | 370 | struct lpc32xx_gpio_chip *group = gpiochip_get_data(chip); |
46158aad | 371 | |
2e6d8456 | 372 | return !!__get_gpo_state_p3(group, pin); |
46158aad RS |
373 | } |
374 | ||
c4a0208f KW |
375 | static int lpc32xx_gpio_request(struct gpio_chip *chip, unsigned pin) |
376 | { | |
377 | if (pin < chip->ngpio) | |
378 | return 0; | |
379 | ||
380 | return -EINVAL; | |
381 | } | |
382 | ||
0bdfeddc RS |
383 | static int lpc32xx_gpio_to_irq_p01(struct gpio_chip *chip, unsigned offset) |
384 | { | |
320a6480 | 385 | return -ENXIO; |
0bdfeddc RS |
386 | } |
387 | ||
0bdfeddc RS |
388 | static int lpc32xx_gpio_to_irq_gpio_p3(struct gpio_chip *chip, unsigned offset) |
389 | { | |
0bdfeddc RS |
390 | return -ENXIO; |
391 | } | |
392 | ||
0bdfeddc RS |
393 | static int lpc32xx_gpio_to_irq_gpi_p3(struct gpio_chip *chip, unsigned offset) |
394 | { | |
0bdfeddc RS |
395 | return -ENXIO; |
396 | } | |
397 | ||
c4a0208f KW |
398 | static struct lpc32xx_gpio_chip lpc32xx_gpiochip[] = { |
399 | { | |
400 | .chip = { | |
401 | .label = "gpio_p0", | |
402 | .direction_input = lpc32xx_gpio_dir_input_p012, | |
403 | .get = lpc32xx_gpio_get_value_p012, | |
404 | .direction_output = lpc32xx_gpio_dir_output_p012, | |
405 | .set = lpc32xx_gpio_set_value_p012, | |
406 | .request = lpc32xx_gpio_request, | |
0bdfeddc | 407 | .to_irq = lpc32xx_gpio_to_irq_p01, |
c4a0208f KW |
408 | .base = LPC32XX_GPIO_P0_GRP, |
409 | .ngpio = LPC32XX_GPIO_P0_MAX, | |
410 | .names = gpio_p0_names, | |
9fb1f39e | 411 | .can_sleep = false, |
c4a0208f KW |
412 | }, |
413 | .gpio_grp = &gpio_grp_regs_p0, | |
414 | }, | |
415 | { | |
416 | .chip = { | |
417 | .label = "gpio_p1", | |
418 | .direction_input = lpc32xx_gpio_dir_input_p012, | |
419 | .get = lpc32xx_gpio_get_value_p012, | |
420 | .direction_output = lpc32xx_gpio_dir_output_p012, | |
421 | .set = lpc32xx_gpio_set_value_p012, | |
422 | .request = lpc32xx_gpio_request, | |
0bdfeddc | 423 | .to_irq = lpc32xx_gpio_to_irq_p01, |
c4a0208f KW |
424 | .base = LPC32XX_GPIO_P1_GRP, |
425 | .ngpio = LPC32XX_GPIO_P1_MAX, | |
426 | .names = gpio_p1_names, | |
9fb1f39e | 427 | .can_sleep = false, |
c4a0208f KW |
428 | }, |
429 | .gpio_grp = &gpio_grp_regs_p1, | |
430 | }, | |
431 | { | |
432 | .chip = { | |
433 | .label = "gpio_p2", | |
434 | .direction_input = lpc32xx_gpio_dir_input_p012, | |
435 | .get = lpc32xx_gpio_get_value_p012, | |
436 | .direction_output = lpc32xx_gpio_dir_output_p012, | |
437 | .set = lpc32xx_gpio_set_value_p012, | |
438 | .request = lpc32xx_gpio_request, | |
439 | .base = LPC32XX_GPIO_P2_GRP, | |
440 | .ngpio = LPC32XX_GPIO_P2_MAX, | |
441 | .names = gpio_p2_names, | |
9fb1f39e | 442 | .can_sleep = false, |
c4a0208f KW |
443 | }, |
444 | .gpio_grp = &gpio_grp_regs_p2, | |
445 | }, | |
446 | { | |
447 | .chip = { | |
448 | .label = "gpio_p3", | |
449 | .direction_input = lpc32xx_gpio_dir_input_p3, | |
450 | .get = lpc32xx_gpio_get_value_p3, | |
451 | .direction_output = lpc32xx_gpio_dir_output_p3, | |
452 | .set = lpc32xx_gpio_set_value_p3, | |
453 | .request = lpc32xx_gpio_request, | |
0bdfeddc | 454 | .to_irq = lpc32xx_gpio_to_irq_gpio_p3, |
c4a0208f KW |
455 | .base = LPC32XX_GPIO_P3_GRP, |
456 | .ngpio = LPC32XX_GPIO_P3_MAX, | |
457 | .names = gpio_p3_names, | |
9fb1f39e | 458 | .can_sleep = false, |
c4a0208f KW |
459 | }, |
460 | .gpio_grp = &gpio_grp_regs_p3, | |
461 | }, | |
462 | { | |
463 | .chip = { | |
464 | .label = "gpi_p3", | |
465 | .direction_input = lpc32xx_gpio_dir_in_always, | |
466 | .get = lpc32xx_gpi_get_value, | |
467 | .request = lpc32xx_gpio_request, | |
0bdfeddc | 468 | .to_irq = lpc32xx_gpio_to_irq_gpi_p3, |
c4a0208f KW |
469 | .base = LPC32XX_GPI_P3_GRP, |
470 | .ngpio = LPC32XX_GPI_P3_MAX, | |
471 | .names = gpi_p3_names, | |
9fb1f39e | 472 | .can_sleep = false, |
c4a0208f KW |
473 | }, |
474 | .gpio_grp = &gpio_grp_regs_p3, | |
475 | }, | |
476 | { | |
477 | .chip = { | |
478 | .label = "gpo_p3", | |
479 | .direction_output = lpc32xx_gpio_dir_out_always, | |
480 | .set = lpc32xx_gpo_set_value, | |
46158aad | 481 | .get = lpc32xx_gpo_get_value, |
c4a0208f KW |
482 | .request = lpc32xx_gpio_request, |
483 | .base = LPC32XX_GPO_P3_GRP, | |
484 | .ngpio = LPC32XX_GPO_P3_MAX, | |
485 | .names = gpo_p3_names, | |
9fb1f39e | 486 | .can_sleep = false, |
c4a0208f KW |
487 | }, |
488 | .gpio_grp = &gpio_grp_regs_p3, | |
489 | }, | |
490 | }; | |
491 | ||
e92935e1 RS |
492 | static int lpc32xx_of_xlate(struct gpio_chip *gc, |
493 | const struct of_phandle_args *gpiospec, u32 *flags) | |
494 | { | |
495 | /* Is this the correct bank? */ | |
496 | u32 bank = gpiospec->args[0]; | |
fdc7a9f8 | 497 | if ((bank >= ARRAY_SIZE(lpc32xx_gpiochip) || |
e92935e1 RS |
498 | (gc != &lpc32xx_gpiochip[bank].chip))) |
499 | return -EINVAL; | |
500 | ||
501 | if (flags) | |
502 | *flags = gpiospec->args[2]; | |
503 | return gpiospec->args[1]; | |
504 | } | |
505 | ||
3836309d | 506 | static int lpc32xx_gpio_probe(struct platform_device *pdev) |
c4a0208f KW |
507 | { |
508 | int i; | |
509 | ||
e92935e1 RS |
510 | for (i = 0; i < ARRAY_SIZE(lpc32xx_gpiochip); i++) { |
511 | if (pdev->dev.of_node) { | |
512 | lpc32xx_gpiochip[i].chip.of_xlate = lpc32xx_of_xlate; | |
513 | lpc32xx_gpiochip[i].chip.of_gpio_n_cells = 3; | |
514 | lpc32xx_gpiochip[i].chip.of_node = pdev->dev.of_node; | |
515 | } | |
69c0a0a5 | 516 | devm_gpiochip_add_data(&pdev->dev, &lpc32xx_gpiochip[i].chip, |
a9bc97e4 | 517 | &lpc32xx_gpiochip[i]); |
e92935e1 RS |
518 | } |
519 | ||
520 | return 0; | |
c4a0208f | 521 | } |
e92935e1 RS |
522 | |
523 | #ifdef CONFIG_OF | |
e95c7c45 | 524 | static const struct of_device_id lpc32xx_gpio_of_match[] = { |
e92935e1 RS |
525 | { .compatible = "nxp,lpc3220-gpio", }, |
526 | { }, | |
527 | }; | |
528 | #endif | |
529 | ||
530 | static struct platform_driver lpc32xx_gpio_driver = { | |
531 | .driver = { | |
532 | .name = "lpc32xx-gpio", | |
e92935e1 RS |
533 | .of_match_table = of_match_ptr(lpc32xx_gpio_of_match), |
534 | }, | |
535 | .probe = lpc32xx_gpio_probe, | |
536 | }; | |
537 | ||
538 | module_platform_driver(lpc32xx_gpio_driver); |