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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
f72f4b44 | 2 | /* |
23f75d7d | 3 | * AXP20x pinctrl and GPIO driver |
f72f4b44 MR |
4 | * |
5 | * Copyright (C) 2016 Maxime Ripard <maxime.ripard@free-electrons.com> | |
23f75d7d | 6 | * Copyright (C) 2017 Quentin Schulz <quentin.schulz@free-electrons.com> |
f72f4b44 MR |
7 | */ |
8 | ||
9 | #include <linux/bitops.h> | |
10 | #include <linux/device.h> | |
11 | #include <linux/gpio/driver.h> | |
12 | #include <linux/init.h> | |
13 | #include <linux/interrupt.h> | |
14 | #include <linux/kernel.h> | |
15 | #include <linux/mfd/axp20x.h> | |
16 | #include <linux/module.h> | |
17 | #include <linux/of.h> | |
e1190083 | 18 | #include <linux/of_device.h> |
23f75d7d QS |
19 | #include <linux/pinctrl/pinconf-generic.h> |
20 | #include <linux/pinctrl/pinctrl.h> | |
21 | #include <linux/pinctrl/pinmux.h> | |
f72f4b44 MR |
22 | #include <linux/platform_device.h> |
23 | #include <linux/regmap.h> | |
24 | #include <linux/slab.h> | |
25 | ||
26 | #define AXP20X_GPIO_FUNCTIONS 0x7 | |
27 | #define AXP20X_GPIO_FUNCTION_OUT_LOW 0 | |
28 | #define AXP20X_GPIO_FUNCTION_OUT_HIGH 1 | |
29 | #define AXP20X_GPIO_FUNCTION_INPUT 2 | |
30 | ||
23f75d7d QS |
31 | #define AXP20X_FUNC_GPIO_OUT 0 |
32 | #define AXP20X_FUNC_GPIO_IN 1 | |
33 | #define AXP20X_FUNC_LDO 2 | |
34 | #define AXP20X_FUNC_ADC 3 | |
35 | #define AXP20X_FUNCS_NB 4 | |
36 | ||
37 | #define AXP20X_MUX_GPIO_OUT 0 | |
38 | #define AXP20X_MUX_GPIO_IN BIT(1) | |
39 | #define AXP20X_MUX_ADC BIT(2) | |
40 | ||
e1190083 QS |
41 | #define AXP813_MUX_ADC (BIT(2) | BIT(0)) |
42 | ||
23f75d7d QS |
43 | struct axp20x_pctrl_desc { |
44 | const struct pinctrl_pin_desc *pins; | |
45 | unsigned int npins; | |
46 | /* Stores the pins supporting LDO function. Bit offset is pin number. */ | |
47 | u8 ldo_mask; | |
48 | /* Stores the pins supporting ADC function. Bit offset is pin number. */ | |
49 | u8 adc_mask; | |
48e706fb | 50 | u8 gpio_status_offset; |
a0a4b4c2 | 51 | u8 adc_mux; |
23f75d7d QS |
52 | }; |
53 | ||
54 | struct axp20x_pinctrl_function { | |
55 | const char *name; | |
56 | unsigned int muxval; | |
57 | const char **groups; | |
58 | unsigned int ngroups; | |
59 | }; | |
60 | ||
d242e60c | 61 | struct axp20x_pctl { |
f72f4b44 MR |
62 | struct gpio_chip chip; |
63 | struct regmap *regmap; | |
23f75d7d QS |
64 | struct pinctrl_dev *pctl_dev; |
65 | struct device *dev; | |
66 | const struct axp20x_pctrl_desc *desc; | |
67 | struct axp20x_pinctrl_function funcs[AXP20X_FUNCS_NB]; | |
68 | }; | |
69 | ||
70 | static const struct pinctrl_pin_desc axp209_pins[] = { | |
71 | PINCTRL_PIN(0, "GPIO0"), | |
72 | PINCTRL_PIN(1, "GPIO1"), | |
73 | PINCTRL_PIN(2, "GPIO2"), | |
74 | }; | |
75 | ||
e1190083 QS |
76 | static const struct pinctrl_pin_desc axp813_pins[] = { |
77 | PINCTRL_PIN(0, "GPIO0"), | |
78 | PINCTRL_PIN(1, "GPIO1"), | |
79 | }; | |
80 | ||
23f75d7d QS |
81 | static const struct axp20x_pctrl_desc axp20x_data = { |
82 | .pins = axp209_pins, | |
83 | .npins = ARRAY_SIZE(axp209_pins), | |
84 | .ldo_mask = BIT(0) | BIT(1), | |
85 | .adc_mask = BIT(0) | BIT(1), | |
48e706fb | 86 | .gpio_status_offset = 4, |
a0a4b4c2 | 87 | .adc_mux = AXP20X_MUX_ADC, |
f72f4b44 MR |
88 | }; |
89 | ||
e1190083 QS |
90 | static const struct axp20x_pctrl_desc axp813_data = { |
91 | .pins = axp813_pins, | |
92 | .npins = ARRAY_SIZE(axp813_pins), | |
93 | .ldo_mask = BIT(0) | BIT(1), | |
94 | .adc_mask = BIT(0), | |
95 | .gpio_status_offset = 0, | |
96 | .adc_mux = AXP813_MUX_ADC, | |
97 | }; | |
98 | ||
3cac991e | 99 | static int axp20x_gpio_get_reg(unsigned int offset) |
f72f4b44 MR |
100 | { |
101 | switch (offset) { | |
102 | case 0: | |
103 | return AXP20X_GPIO0_CTRL; | |
104 | case 1: | |
105 | return AXP20X_GPIO1_CTRL; | |
106 | case 2: | |
107 | return AXP20X_GPIO2_CTRL; | |
108 | } | |
109 | ||
110 | return -EINVAL; | |
111 | } | |
112 | ||
3cac991e | 113 | static int axp20x_gpio_input(struct gpio_chip *chip, unsigned int offset) |
f72f4b44 | 114 | { |
23f75d7d | 115 | return pinctrl_gpio_direction_input(chip->base + offset); |
f72f4b44 MR |
116 | } |
117 | ||
3cac991e | 118 | static int axp20x_gpio_get(struct gpio_chip *chip, unsigned int offset) |
f72f4b44 | 119 | { |
d242e60c | 120 | struct axp20x_pctl *pctl = gpiochip_get_data(chip); |
f72f4b44 | 121 | unsigned int val; |
1d2b2ac0 | 122 | int ret; |
f72f4b44 | 123 | |
d242e60c | 124 | ret = regmap_read(pctl->regmap, AXP20X_GPIO20_SS, &val); |
f72f4b44 MR |
125 | if (ret) |
126 | return ret; | |
127 | ||
48e706fb | 128 | return !!(val & BIT(offset + pctl->desc->gpio_status_offset)); |
f72f4b44 MR |
129 | } |
130 | ||
3cac991e QS |
131 | static int axp20x_gpio_get_direction(struct gpio_chip *chip, |
132 | unsigned int offset) | |
81d3753d | 133 | { |
d242e60c | 134 | struct axp20x_pctl *pctl = gpiochip_get_data(chip); |
81d3753d MR |
135 | unsigned int val; |
136 | int reg, ret; | |
137 | ||
138 | reg = axp20x_gpio_get_reg(offset); | |
139 | if (reg < 0) | |
140 | return reg; | |
141 | ||
d242e60c | 142 | ret = regmap_read(pctl->regmap, reg, &val); |
81d3753d MR |
143 | if (ret) |
144 | return ret; | |
145 | ||
146 | /* | |
147 | * This shouldn't really happen if the pin is in use already, | |
148 | * or if it's not in use yet, it doesn't matter since we're | |
149 | * going to change the value soon anyway. Default to output. | |
150 | */ | |
151 | if ((val & AXP20X_GPIO_FUNCTIONS) > 2) | |
3c827873 | 152 | return GPIO_LINE_DIRECTION_OUT; |
81d3753d MR |
153 | |
154 | /* | |
155 | * The GPIO directions are the three lowest values. | |
156 | * 2 is input, 0 and 1 are output | |
157 | */ | |
3c827873 MV |
158 | if (val & 2) |
159 | return GPIO_LINE_DIRECTION_IN; | |
160 | ||
161 | return GPIO_LINE_DIRECTION_OUT; | |
81d3753d MR |
162 | } |
163 | ||
3cac991e | 164 | static int axp20x_gpio_output(struct gpio_chip *chip, unsigned int offset, |
f72f4b44 | 165 | int value) |
23f75d7d QS |
166 | { |
167 | chip->set(chip, offset, value); | |
168 | ||
169 | return 0; | |
170 | } | |
171 | ||
172 | static void axp20x_gpio_set(struct gpio_chip *chip, unsigned int offset, | |
173 | int value) | |
f72f4b44 | 174 | { |
d242e60c | 175 | struct axp20x_pctl *pctl = gpiochip_get_data(chip); |
f72f4b44 MR |
176 | int reg; |
177 | ||
23f75d7d QS |
178 | reg = axp20x_gpio_get_reg(offset); |
179 | if (reg < 0) | |
180 | return; | |
181 | ||
d242e60c | 182 | regmap_update_bits(pctl->regmap, reg, |
23f75d7d QS |
183 | AXP20X_GPIO_FUNCTIONS, |
184 | value ? AXP20X_GPIO_FUNCTION_OUT_HIGH : | |
185 | AXP20X_GPIO_FUNCTION_OUT_LOW); | |
186 | } | |
187 | ||
188 | static int axp20x_pmx_set(struct pinctrl_dev *pctldev, unsigned int offset, | |
189 | u8 config) | |
190 | { | |
d242e60c | 191 | struct axp20x_pctl *pctl = pinctrl_dev_get_drvdata(pctldev); |
23f75d7d QS |
192 | int reg; |
193 | ||
f72f4b44 MR |
194 | reg = axp20x_gpio_get_reg(offset); |
195 | if (reg < 0) | |
196 | return reg; | |
197 | ||
d242e60c | 198 | return regmap_update_bits(pctl->regmap, reg, AXP20X_GPIO_FUNCTIONS, |
23f75d7d | 199 | config); |
f72f4b44 MR |
200 | } |
201 | ||
23f75d7d QS |
202 | static int axp20x_pmx_func_cnt(struct pinctrl_dev *pctldev) |
203 | { | |
d242e60c | 204 | struct axp20x_pctl *pctl = pinctrl_dev_get_drvdata(pctldev); |
23f75d7d | 205 | |
d242e60c | 206 | return ARRAY_SIZE(pctl->funcs); |
23f75d7d QS |
207 | } |
208 | ||
209 | static const char *axp20x_pmx_func_name(struct pinctrl_dev *pctldev, | |
210 | unsigned int selector) | |
211 | { | |
d242e60c | 212 | struct axp20x_pctl *pctl = pinctrl_dev_get_drvdata(pctldev); |
23f75d7d | 213 | |
d242e60c | 214 | return pctl->funcs[selector].name; |
23f75d7d QS |
215 | } |
216 | ||
217 | static int axp20x_pmx_func_groups(struct pinctrl_dev *pctldev, | |
218 | unsigned int selector, | |
219 | const char * const **groups, | |
220 | unsigned int *num_groups) | |
221 | { | |
d242e60c | 222 | struct axp20x_pctl *pctl = pinctrl_dev_get_drvdata(pctldev); |
23f75d7d | 223 | |
d242e60c QS |
224 | *groups = pctl->funcs[selector].groups; |
225 | *num_groups = pctl->funcs[selector].ngroups; | |
23f75d7d QS |
226 | |
227 | return 0; | |
228 | } | |
229 | ||
230 | static int axp20x_pmx_set_mux(struct pinctrl_dev *pctldev, | |
231 | unsigned int function, unsigned int group) | |
232 | { | |
d242e60c | 233 | struct axp20x_pctl *pctl = pinctrl_dev_get_drvdata(pctldev); |
23f75d7d QS |
234 | unsigned int mask; |
235 | ||
236 | /* Every pin supports GPIO_OUT and GPIO_IN functions */ | |
237 | if (function <= AXP20X_FUNC_GPIO_IN) | |
238 | return axp20x_pmx_set(pctldev, group, | |
d242e60c | 239 | pctl->funcs[function].muxval); |
23f75d7d QS |
240 | |
241 | if (function == AXP20X_FUNC_LDO) | |
d242e60c | 242 | mask = pctl->desc->ldo_mask; |
23f75d7d | 243 | else |
d242e60c | 244 | mask = pctl->desc->adc_mask; |
23f75d7d QS |
245 | |
246 | if (!(BIT(group) & mask)) | |
247 | return -EINVAL; | |
248 | ||
249 | /* | |
250 | * We let the regulator framework handle the LDO muxing as muxing bits | |
251 | * are basically also regulators on/off bits. It's better not to enforce | |
252 | * any state of the regulator when selecting LDO mux so that we don't | |
253 | * interfere with the regulator driver. | |
254 | */ | |
255 | if (function == AXP20X_FUNC_LDO) | |
256 | return 0; | |
257 | ||
d242e60c | 258 | return axp20x_pmx_set(pctldev, group, pctl->funcs[function].muxval); |
23f75d7d QS |
259 | } |
260 | ||
261 | static int axp20x_pmx_gpio_set_direction(struct pinctrl_dev *pctldev, | |
262 | struct pinctrl_gpio_range *range, | |
263 | unsigned int offset, bool input) | |
264 | { | |
d242e60c | 265 | struct axp20x_pctl *pctl = pinctrl_dev_get_drvdata(pctldev); |
23f75d7d QS |
266 | |
267 | if (input) | |
268 | return axp20x_pmx_set(pctldev, offset, | |
d242e60c | 269 | pctl->funcs[AXP20X_FUNC_GPIO_IN].muxval); |
23f75d7d QS |
270 | |
271 | return axp20x_pmx_set(pctldev, offset, | |
d242e60c | 272 | pctl->funcs[AXP20X_FUNC_GPIO_OUT].muxval); |
23f75d7d QS |
273 | } |
274 | ||
275 | static const struct pinmux_ops axp20x_pmx_ops = { | |
276 | .get_functions_count = axp20x_pmx_func_cnt, | |
277 | .get_function_name = axp20x_pmx_func_name, | |
278 | .get_function_groups = axp20x_pmx_func_groups, | |
279 | .set_mux = axp20x_pmx_set_mux, | |
280 | .gpio_set_direction = axp20x_pmx_gpio_set_direction, | |
281 | .strict = true, | |
282 | }; | |
283 | ||
284 | static int axp20x_groups_cnt(struct pinctrl_dev *pctldev) | |
285 | { | |
d242e60c | 286 | struct axp20x_pctl *pctl = pinctrl_dev_get_drvdata(pctldev); |
23f75d7d | 287 | |
d242e60c | 288 | return pctl->desc->npins; |
23f75d7d QS |
289 | } |
290 | ||
291 | static int axp20x_group_pins(struct pinctrl_dev *pctldev, unsigned int selector, | |
292 | const unsigned int **pins, unsigned int *num_pins) | |
293 | { | |
d242e60c | 294 | struct axp20x_pctl *pctl = pinctrl_dev_get_drvdata(pctldev); |
23f75d7d | 295 | |
d242e60c | 296 | *pins = (unsigned int *)&pctl->desc->pins[selector]; |
23f75d7d QS |
297 | *num_pins = 1; |
298 | ||
299 | return 0; | |
300 | } | |
301 | ||
302 | static const char *axp20x_group_name(struct pinctrl_dev *pctldev, | |
303 | unsigned int selector) | |
f72f4b44 | 304 | { |
d242e60c | 305 | struct axp20x_pctl *pctl = pinctrl_dev_get_drvdata(pctldev); |
23f75d7d | 306 | |
d242e60c | 307 | return pctl->desc->pins[selector].name; |
23f75d7d QS |
308 | } |
309 | ||
310 | static const struct pinctrl_ops axp20x_pctrl_ops = { | |
311 | .dt_node_to_map = pinconf_generic_dt_node_to_map_group, | |
312 | .dt_free_map = pinconf_generic_dt_free_map, | |
313 | .get_groups_count = axp20x_groups_cnt, | |
314 | .get_group_name = axp20x_group_name, | |
315 | .get_group_pins = axp20x_group_pins, | |
316 | }; | |
317 | ||
504c7697 | 318 | static int axp20x_funcs_groups_from_mask(struct device *dev, unsigned int mask, |
23f75d7d QS |
319 | unsigned int mask_len, |
320 | struct axp20x_pinctrl_function *func, | |
321 | const struct pinctrl_pin_desc *pins) | |
322 | { | |
323 | unsigned long int mask_cpy = mask; | |
324 | const char **group; | |
325 | unsigned int ngroups = hweight8(mask); | |
326 | int bit; | |
327 | ||
328 | func->ngroups = ngroups; | |
329 | if (func->ngroups > 0) { | |
a86854d0 KC |
330 | func->groups = devm_kcalloc(dev, |
331 | ngroups, sizeof(const char *), | |
23f75d7d | 332 | GFP_KERNEL); |
504c7697 AV |
333 | if (!func->groups) |
334 | return -ENOMEM; | |
23f75d7d QS |
335 | group = func->groups; |
336 | for_each_set_bit(bit, &mask_cpy, mask_len) { | |
337 | *group = pins[bit].name; | |
338 | group++; | |
339 | } | |
340 | } | |
504c7697 AV |
341 | |
342 | return 0; | |
23f75d7d QS |
343 | } |
344 | ||
504c7697 | 345 | static int axp20x_build_funcs_groups(struct platform_device *pdev) |
23f75d7d | 346 | { |
d242e60c | 347 | struct axp20x_pctl *pctl = platform_get_drvdata(pdev); |
504c7697 | 348 | int i, ret, pin, npins = pctl->desc->npins; |
d242e60c QS |
349 | |
350 | pctl->funcs[AXP20X_FUNC_GPIO_OUT].name = "gpio_out"; | |
351 | pctl->funcs[AXP20X_FUNC_GPIO_OUT].muxval = AXP20X_MUX_GPIO_OUT; | |
352 | pctl->funcs[AXP20X_FUNC_GPIO_IN].name = "gpio_in"; | |
353 | pctl->funcs[AXP20X_FUNC_GPIO_IN].muxval = AXP20X_MUX_GPIO_IN; | |
354 | pctl->funcs[AXP20X_FUNC_LDO].name = "ldo"; | |
23f75d7d QS |
355 | /* |
356 | * Muxval for LDO is useless as we won't use it. | |
357 | * See comment in axp20x_pmx_set_mux. | |
358 | */ | |
d242e60c | 359 | pctl->funcs[AXP20X_FUNC_ADC].name = "adc"; |
a0a4b4c2 | 360 | pctl->funcs[AXP20X_FUNC_ADC].muxval = pctl->desc->adc_mux; |
23f75d7d QS |
361 | |
362 | /* Every pin supports GPIO_OUT and GPIO_IN functions */ | |
363 | for (i = 0; i <= AXP20X_FUNC_GPIO_IN; i++) { | |
d242e60c | 364 | pctl->funcs[i].ngroups = npins; |
a86854d0 KC |
365 | pctl->funcs[i].groups = devm_kcalloc(&pdev->dev, |
366 | npins, sizeof(char *), | |
23f75d7d | 367 | GFP_KERNEL); |
1adc90c7 AP |
368 | if (!pctl->funcs[i].groups) |
369 | return -ENOMEM; | |
23f75d7d | 370 | for (pin = 0; pin < npins; pin++) |
d242e60c | 371 | pctl->funcs[i].groups[pin] = pctl->desc->pins[pin].name; |
23f75d7d QS |
372 | } |
373 | ||
504c7697 | 374 | ret = axp20x_funcs_groups_from_mask(&pdev->dev, pctl->desc->ldo_mask, |
d242e60c QS |
375 | npins, &pctl->funcs[AXP20X_FUNC_LDO], |
376 | pctl->desc->pins); | |
504c7697 AV |
377 | if (ret) |
378 | return ret; | |
23f75d7d | 379 | |
504c7697 | 380 | ret = axp20x_funcs_groups_from_mask(&pdev->dev, pctl->desc->adc_mask, |
d242e60c QS |
381 | npins, &pctl->funcs[AXP20X_FUNC_ADC], |
382 | pctl->desc->pins); | |
504c7697 AV |
383 | if (ret) |
384 | return ret; | |
385 | ||
386 | return 0; | |
f72f4b44 MR |
387 | } |
388 | ||
e1190083 QS |
389 | static const struct of_device_id axp20x_pctl_match[] = { |
390 | { .compatible = "x-powers,axp209-gpio", .data = &axp20x_data, }, | |
391 | { .compatible = "x-powers,axp813-gpio", .data = &axp813_data, }, | |
392 | { } | |
393 | }; | |
394 | MODULE_DEVICE_TABLE(of, axp20x_pctl_match); | |
395 | ||
d242e60c | 396 | static int axp20x_pctl_probe(struct platform_device *pdev) |
f72f4b44 MR |
397 | { |
398 | struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent); | |
d242e60c | 399 | struct axp20x_pctl *pctl; |
e1190083 | 400 | struct device *dev = &pdev->dev; |
23f75d7d | 401 | struct pinctrl_desc *pctrl_desc; |
f72f4b44 MR |
402 | int ret; |
403 | ||
404 | if (!of_device_is_available(pdev->dev.of_node)) | |
405 | return -ENODEV; | |
406 | ||
407 | if (!axp20x) { | |
408 | dev_err(&pdev->dev, "Parent drvdata not set\n"); | |
409 | return -EINVAL; | |
410 | } | |
411 | ||
d242e60c QS |
412 | pctl = devm_kzalloc(&pdev->dev, sizeof(*pctl), GFP_KERNEL); |
413 | if (!pctl) | |
f72f4b44 MR |
414 | return -ENOMEM; |
415 | ||
d242e60c QS |
416 | pctl->chip.base = -1; |
417 | pctl->chip.can_sleep = true; | |
418 | pctl->chip.request = gpiochip_generic_request; | |
419 | pctl->chip.free = gpiochip_generic_free; | |
420 | pctl->chip.parent = &pdev->dev; | |
421 | pctl->chip.label = dev_name(&pdev->dev); | |
422 | pctl->chip.owner = THIS_MODULE; | |
423 | pctl->chip.get = axp20x_gpio_get; | |
424 | pctl->chip.get_direction = axp20x_gpio_get_direction; | |
425 | pctl->chip.set = axp20x_gpio_set; | |
426 | pctl->chip.direction_input = axp20x_gpio_input; | |
427 | pctl->chip.direction_output = axp20x_gpio_output; | |
d242e60c | 428 | |
9b8ee3c0 | 429 | pctl->desc = of_device_get_match_data(dev); |
a0498152 QS |
430 | |
431 | pctl->chip.ngpio = pctl->desc->npins; | |
432 | ||
d242e60c QS |
433 | pctl->regmap = axp20x->regmap; |
434 | pctl->dev = &pdev->dev; | |
435 | ||
436 | platform_set_drvdata(pdev, pctl); | |
23f75d7d | 437 | |
504c7697 AV |
438 | ret = axp20x_build_funcs_groups(pdev); |
439 | if (ret) { | |
440 | dev_err(&pdev->dev, "failed to build groups\n"); | |
441 | return ret; | |
442 | } | |
23f75d7d QS |
443 | |
444 | pctrl_desc = devm_kzalloc(&pdev->dev, sizeof(*pctrl_desc), GFP_KERNEL); | |
445 | if (!pctrl_desc) | |
446 | return -ENOMEM; | |
447 | ||
448 | pctrl_desc->name = dev_name(&pdev->dev); | |
449 | pctrl_desc->owner = THIS_MODULE; | |
d242e60c QS |
450 | pctrl_desc->pins = pctl->desc->pins; |
451 | pctrl_desc->npins = pctl->desc->npins; | |
23f75d7d QS |
452 | pctrl_desc->pctlops = &axp20x_pctrl_ops; |
453 | pctrl_desc->pmxops = &axp20x_pmx_ops; | |
454 | ||
d242e60c QS |
455 | pctl->pctl_dev = devm_pinctrl_register(&pdev->dev, pctrl_desc, pctl); |
456 | if (IS_ERR(pctl->pctl_dev)) { | |
23f75d7d | 457 | dev_err(&pdev->dev, "couldn't register pinctrl driver\n"); |
d242e60c | 458 | return PTR_ERR(pctl->pctl_dev); |
23f75d7d | 459 | } |
f72f4b44 | 460 | |
d242e60c | 461 | ret = devm_gpiochip_add_data(&pdev->dev, &pctl->chip, pctl); |
f72f4b44 MR |
462 | if (ret) { |
463 | dev_err(&pdev->dev, "Failed to register GPIO chip\n"); | |
464 | return ret; | |
465 | } | |
466 | ||
d242e60c QS |
467 | ret = gpiochip_add_pin_range(&pctl->chip, dev_name(&pdev->dev), |
468 | pctl->desc->pins->number, | |
469 | pctl->desc->pins->number, | |
470 | pctl->desc->npins); | |
23f75d7d QS |
471 | if (ret) { |
472 | dev_err(&pdev->dev, "failed to add pin range\n"); | |
473 | return ret; | |
474 | } | |
475 | ||
476 | dev_info(&pdev->dev, "AXP209 pinctrl and GPIO driver loaded\n"); | |
f72f4b44 MR |
477 | |
478 | return 0; | |
479 | } | |
480 | ||
d242e60c QS |
481 | static struct platform_driver axp20x_pctl_driver = { |
482 | .probe = axp20x_pctl_probe, | |
f72f4b44 MR |
483 | .driver = { |
484 | .name = "axp20x-gpio", | |
d242e60c | 485 | .of_match_table = axp20x_pctl_match, |
f72f4b44 MR |
486 | }, |
487 | }; | |
488 | ||
d242e60c | 489 | module_platform_driver(axp20x_pctl_driver); |
f72f4b44 MR |
490 | |
491 | MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>"); | |
23f75d7d QS |
492 | MODULE_AUTHOR("Quentin Schulz <quentin.schulz@free-electrons.com>"); |
493 | MODULE_DESCRIPTION("AXP20x PMIC pinctrl and GPIO driver"); | |
f72f4b44 | 494 | MODULE_LICENSE("GPL"); |