2 * Copyright (c) 2015, Sony Mobile Communications AB.
3 * Copyright (c) 2013, The Linux Foundation. All rights reserved.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 and
7 * only version 2 as published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
15 #include <linux/module.h>
16 #include <linux/platform_device.h>
17 #include <linux/pinctrl/pinctrl.h>
18 #include <linux/pinctrl/pinmux.h>
19 #include <linux/pinctrl/pinconf.h>
20 #include <linux/pinctrl/pinconf-generic.h>
21 #include <linux/slab.h>
22 #include <linux/regmap.h>
23 #include <linux/gpio.h>
24 #include <linux/interrupt.h>
25 #include <linux/of_device.h>
27 #include <dt-bindings/pinctrl/qcom,pmic-mpp.h>
30 #include "../pinctrl-utils.h"
33 #define SSBI_REG_ADDR_MPP_BASE 0x50
34 #define SSBI_REG_ADDR_MPP(n) (SSBI_REG_ADDR_MPP_BASE + n)
37 #define PM8XXX_MPP_TYPE_D_INPUT 0
38 #define PM8XXX_MPP_TYPE_D_OUTPUT 1
39 #define PM8XXX_MPP_TYPE_D_BI_DIR 2
40 #define PM8XXX_MPP_TYPE_A_INPUT 3
41 #define PM8XXX_MPP_TYPE_A_OUTPUT 4
42 #define PM8XXX_MPP_TYPE_SINK 5
43 #define PM8XXX_MPP_TYPE_DTEST_SINK 6
44 #define PM8XXX_MPP_TYPE_DTEST_OUTPUT 7
46 /* Digital Input: control */
47 #define PM8XXX_MPP_DIN_TO_INT 0
48 #define PM8XXX_MPP_DIN_TO_DBUS1 1
49 #define PM8XXX_MPP_DIN_TO_DBUS2 2
50 #define PM8XXX_MPP_DIN_TO_DBUS3 3
52 /* Digital Output: control */
53 #define PM8XXX_MPP_DOUT_CTRL_LOW 0
54 #define PM8XXX_MPP_DOUT_CTRL_HIGH 1
55 #define PM8XXX_MPP_DOUT_CTRL_MPP 2
56 #define PM8XXX_MPP_DOUT_CTRL_INV_MPP 3
58 /* Bidirectional: control */
59 #define PM8XXX_MPP_BI_PULLUP_1KOHM 0
60 #define PM8XXX_MPP_BI_PULLUP_OPEN 1
61 #define PM8XXX_MPP_BI_PULLUP_10KOHM 2
62 #define PM8XXX_MPP_BI_PULLUP_30KOHM 3
64 /* Analog Output: control */
65 #define PM8XXX_MPP_AOUT_CTRL_DISABLE 0
66 #define PM8XXX_MPP_AOUT_CTRL_ENABLE 1
67 #define PM8XXX_MPP_AOUT_CTRL_MPP_HIGH_EN 2
68 #define PM8XXX_MPP_AOUT_CTRL_MPP_LOW_EN 3
70 /* Current Sink: control */
71 #define PM8XXX_MPP_CS_CTRL_DISABLE 0
72 #define PM8XXX_MPP_CS_CTRL_ENABLE 1
73 #define PM8XXX_MPP_CS_CTRL_MPP_HIGH_EN 2
74 #define PM8XXX_MPP_CS_CTRL_MPP_LOW_EN 3
76 /* DTEST Current Sink: control */
77 #define PM8XXX_MPP_DTEST_CS_CTRL_EN1 0
78 #define PM8XXX_MPP_DTEST_CS_CTRL_EN2 1
79 #define PM8XXX_MPP_DTEST_CS_CTRL_EN3 2
80 #define PM8XXX_MPP_DTEST_CS_CTRL_EN4 3
82 /* DTEST Digital Output: control */
83 #define PM8XXX_MPP_DTEST_DBUS1 0
84 #define PM8XXX_MPP_DTEST_DBUS2 1
85 #define PM8XXX_MPP_DTEST_DBUS3 2
86 #define PM8XXX_MPP_DTEST_DBUS4 3
88 /* custom pinconf parameters */
89 #define PM8XXX_CONFIG_AMUX (PIN_CONFIG_END + 1)
90 #define PM8XXX_CONFIG_DTEST_SELECTOR (PIN_CONFIG_END + 2)
91 #define PM8XXX_CONFIG_ALEVEL (PIN_CONFIG_END + 3)
92 #define PM8XXX_CONFIG_PAIRED (PIN_CONFIG_END + 4)
95 * struct pm8xxx_pin_data - dynamic configuration for a pin
96 * @reg: address of the control register
97 * @irq: IRQ from the PMIC interrupt controller
98 * @mode: operating mode for the pin (digital, analog or current sink)
99 * @input: pin is input
100 * @output: pin is output
101 * @high_z: pin is floating
102 * @paired: mpp operates in paired mode
103 * @output_value: logical output value of the mpp
104 * @power_source: selected power source
105 * @dtest: DTEST route selector
106 * @amux: input muxing in analog mode
107 * @aout_level: selector of the output in analog mode
108 * @drive_strength: drive strength of the current sink
109 * @pullup: pull up value, when in digital bidirectional mode
111 struct pm8xxx_pin_data {
133 struct regmap *regmap;
134 struct pinctrl_dev *pctrl;
135 struct gpio_chip chip;
137 struct pinctrl_desc desc;
141 static const struct pinconf_generic_params pm8xxx_mpp_bindings[] = {
142 {"qcom,amux-route", PM8XXX_CONFIG_AMUX, 0},
143 {"qcom,analog-level", PM8XXX_CONFIG_ALEVEL, 0},
144 {"qcom,dtest", PM8XXX_CONFIG_DTEST_SELECTOR, 0},
145 {"qcom,paired", PM8XXX_CONFIG_PAIRED, 0},
148 #ifdef CONFIG_DEBUG_FS
149 static const struct pin_config_item pm8xxx_conf_items[] = {
150 PCONFDUMP(PM8XXX_CONFIG_AMUX, "analog mux", NULL, true),
151 PCONFDUMP(PM8XXX_CONFIG_ALEVEL, "analog level", NULL, true),
152 PCONFDUMP(PM8XXX_CONFIG_DTEST_SELECTOR, "dtest", NULL, true),
153 PCONFDUMP(PM8XXX_CONFIG_PAIRED, "paired", NULL, false),
157 #define PM8XXX_MAX_MPPS 12
158 static const char * const pm8xxx_groups[PM8XXX_MAX_MPPS] = {
159 "mpp1", "mpp2", "mpp3", "mpp4", "mpp5", "mpp6", "mpp7", "mpp8",
160 "mpp9", "mpp10", "mpp11", "mpp12",
163 #define PM8XXX_MPP_DIGITAL 0
164 #define PM8XXX_MPP_ANALOG 1
165 #define PM8XXX_MPP_SINK 2
167 static const char * const pm8xxx_mpp_functions[] = {
168 "digital", "analog", "sink",
171 static int pm8xxx_mpp_update(struct pm8xxx_mpp *pctrl,
172 struct pm8xxx_pin_data *pin)
181 case PM8XXX_MPP_DIGITAL:
183 type = PM8XXX_MPP_TYPE_DTEST_OUTPUT;
184 ctrl = pin->dtest - 1;
185 } else if (pin->input && pin->output) {
186 type = PM8XXX_MPP_TYPE_D_BI_DIR;
188 ctrl = PM8XXX_MPP_BI_PULLUP_OPEN;
189 else if (pin->pullup == 600)
190 ctrl = PM8XXX_MPP_BI_PULLUP_1KOHM;
191 else if (pin->pullup == 10000)
192 ctrl = PM8XXX_MPP_BI_PULLUP_10KOHM;
194 ctrl = PM8XXX_MPP_BI_PULLUP_30KOHM;
195 } else if (pin->input) {
196 type = PM8XXX_MPP_TYPE_D_INPUT;
200 ctrl = PM8XXX_MPP_DIN_TO_INT;
202 type = PM8XXX_MPP_TYPE_D_OUTPUT;
203 ctrl = !!pin->output_value;
208 level = pin->power_source;
210 case PM8XXX_MPP_ANALOG:
212 type = PM8XXX_MPP_TYPE_A_OUTPUT;
213 level = pin->aout_level;
214 ctrl = pin->output_value;
218 type = PM8XXX_MPP_TYPE_A_INPUT;
223 case PM8XXX_MPP_SINK:
224 level = (pin->drive_strength / 5) - 1;
226 type = PM8XXX_MPP_TYPE_DTEST_SINK;
227 ctrl = pin->dtest - 1;
229 type = PM8XXX_MPP_TYPE_SINK;
230 ctrl = pin->output_value;
239 val = type << 5 | level << 2 | ctrl;
240 ret = regmap_write(pctrl->regmap, pin->reg, val);
242 dev_err(pctrl->dev, "failed to write register\n");
247 static int pm8xxx_get_groups_count(struct pinctrl_dev *pctldev)
249 struct pm8xxx_mpp *pctrl = pinctrl_dev_get_drvdata(pctldev);
254 static const char *pm8xxx_get_group_name(struct pinctrl_dev *pctldev,
257 return pm8xxx_groups[group];
261 static int pm8xxx_get_group_pins(struct pinctrl_dev *pctldev,
263 const unsigned **pins,
266 struct pm8xxx_mpp *pctrl = pinctrl_dev_get_drvdata(pctldev);
268 *pins = &pctrl->desc.pins[group].number;
274 static const struct pinctrl_ops pm8xxx_pinctrl_ops = {
275 .get_groups_count = pm8xxx_get_groups_count,
276 .get_group_name = pm8xxx_get_group_name,
277 .get_group_pins = pm8xxx_get_group_pins,
278 .dt_node_to_map = pinconf_generic_dt_node_to_map_group,
279 .dt_free_map = pinctrl_utils_dt_free_map,
282 static int pm8xxx_get_functions_count(struct pinctrl_dev *pctldev)
284 return ARRAY_SIZE(pm8xxx_mpp_functions);
287 static const char *pm8xxx_get_function_name(struct pinctrl_dev *pctldev,
290 return pm8xxx_mpp_functions[function];
293 static int pm8xxx_get_function_groups(struct pinctrl_dev *pctldev,
295 const char * const **groups,
296 unsigned * const num_groups)
298 struct pm8xxx_mpp *pctrl = pinctrl_dev_get_drvdata(pctldev);
300 *groups = pm8xxx_groups;
301 *num_groups = pctrl->npins;
305 static int pm8xxx_pinmux_set_mux(struct pinctrl_dev *pctldev,
309 struct pm8xxx_mpp *pctrl = pinctrl_dev_get_drvdata(pctldev);
310 struct pm8xxx_pin_data *pin = pctrl->desc.pins[group].drv_data;
312 pin->mode = function;
313 pm8xxx_mpp_update(pctrl, pin);
318 static const struct pinmux_ops pm8xxx_pinmux_ops = {
319 .get_functions_count = pm8xxx_get_functions_count,
320 .get_function_name = pm8xxx_get_function_name,
321 .get_function_groups = pm8xxx_get_function_groups,
322 .set_mux = pm8xxx_pinmux_set_mux,
325 static int pm8xxx_pin_config_get(struct pinctrl_dev *pctldev,
327 unsigned long *config)
329 struct pm8xxx_mpp *pctrl = pinctrl_dev_get_drvdata(pctldev);
330 struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data;
331 unsigned param = pinconf_to_config_param(*config);
335 case PIN_CONFIG_BIAS_PULL_UP:
338 case PIN_CONFIG_BIAS_HIGH_IMPEDANCE:
341 case PIN_CONFIG_INPUT_ENABLE:
344 case PIN_CONFIG_OUTPUT:
345 arg = pin->output_value;
347 case PIN_CONFIG_POWER_SOURCE:
348 arg = pin->power_source;
350 case PIN_CONFIG_DRIVE_STRENGTH:
351 arg = pin->drive_strength;
353 case PM8XXX_CONFIG_DTEST_SELECTOR:
356 case PM8XXX_CONFIG_AMUX:
359 case PM8XXX_CONFIG_ALEVEL:
360 arg = pin->aout_level;
362 case PM8XXX_CONFIG_PAIRED:
369 *config = pinconf_to_config_packed(param, arg);
374 static int pm8xxx_pin_config_set(struct pinctrl_dev *pctldev,
376 unsigned long *configs,
377 unsigned num_configs)
379 struct pm8xxx_mpp *pctrl = pinctrl_dev_get_drvdata(pctldev);
380 struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data;
385 for (i = 0; i < num_configs; i++) {
386 param = pinconf_to_config_param(configs[i]);
387 arg = pinconf_to_config_argument(configs[i]);
390 case PIN_CONFIG_BIAS_PULL_UP:
393 case PIN_CONFIG_BIAS_HIGH_IMPEDANCE:
396 case PIN_CONFIG_INPUT_ENABLE:
399 case PIN_CONFIG_OUTPUT:
401 pin->output_value = !!arg;
403 case PIN_CONFIG_POWER_SOURCE:
404 pin->power_source = arg;
406 case PIN_CONFIG_DRIVE_STRENGTH:
407 pin->drive_strength = arg;
409 case PM8XXX_CONFIG_DTEST_SELECTOR:
412 case PM8XXX_CONFIG_AMUX:
415 case PM8XXX_CONFIG_ALEVEL:
416 pin->aout_level = arg;
418 case PM8XXX_CONFIG_PAIRED:
423 "unsupported config parameter: %x\n",
429 pm8xxx_mpp_update(pctrl, pin);
434 static const struct pinconf_ops pm8xxx_pinconf_ops = {
436 .pin_config_group_get = pm8xxx_pin_config_get,
437 .pin_config_group_set = pm8xxx_pin_config_set,
440 static struct pinctrl_desc pm8xxx_pinctrl_desc = {
441 .name = "pm8xxx_mpp",
442 .pctlops = &pm8xxx_pinctrl_ops,
443 .pmxops = &pm8xxx_pinmux_ops,
444 .confops = &pm8xxx_pinconf_ops,
445 .owner = THIS_MODULE,
448 static int pm8xxx_mpp_direction_input(struct gpio_chip *chip,
451 struct pm8xxx_mpp *pctrl = container_of(chip, struct pm8xxx_mpp, chip);
452 struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data;
455 case PM8XXX_MPP_DIGITAL:
458 case PM8XXX_MPP_ANALOG:
462 case PM8XXX_MPP_SINK:
466 pm8xxx_mpp_update(pctrl, pin);
471 static int pm8xxx_mpp_direction_output(struct gpio_chip *chip,
475 struct pm8xxx_mpp *pctrl = container_of(chip, struct pm8xxx_mpp, chip);
476 struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data;
479 case PM8XXX_MPP_DIGITAL:
482 case PM8XXX_MPP_ANALOG:
486 case PM8XXX_MPP_SINK:
492 pm8xxx_mpp_update(pctrl, pin);
497 static int pm8xxx_mpp_get(struct gpio_chip *chip, unsigned offset)
499 struct pm8xxx_mpp *pctrl = container_of(chip, struct pm8xxx_mpp, chip);
500 struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data;
505 return pin->output_value;
507 ret = irq_get_irqchip_state(pin->irq, IRQCHIP_STATE_LINE_LEVEL, &state);
514 static void pm8xxx_mpp_set(struct gpio_chip *chip, unsigned offset, int value)
516 struct pm8xxx_mpp *pctrl = container_of(chip, struct pm8xxx_mpp, chip);
517 struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data;
519 pin->output_value = !!value;
521 pm8xxx_mpp_update(pctrl, pin);
524 static int pm8xxx_mpp_of_xlate(struct gpio_chip *chip,
525 const struct of_phandle_args *gpio_desc,
528 if (chip->of_gpio_n_cells < 2)
532 *flags = gpio_desc->args[1];
534 return gpio_desc->args[0] - 1;
538 static int pm8xxx_mpp_to_irq(struct gpio_chip *chip, unsigned offset)
540 struct pm8xxx_mpp *pctrl = container_of(chip, struct pm8xxx_mpp, chip);
541 struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data;
546 #ifdef CONFIG_DEBUG_FS
547 #include <linux/seq_file.h>
549 static void pm8xxx_mpp_dbg_show_one(struct seq_file *s,
550 struct pinctrl_dev *pctldev,
551 struct gpio_chip *chip,
555 struct pm8xxx_mpp *pctrl = container_of(chip, struct pm8xxx_mpp, chip);
556 struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data;
558 static const char * const aout_lvls[] = {
559 "1v25", "1v25_2", "0v625", "0v3125", "mpp", "abus1", "abus2",
563 static const char * const amuxs[] = {
564 "amux5", "amux6", "amux7", "amux8", "amux9", "abus1", "abus2",
568 seq_printf(s, " mpp%-2d:", offset + 1);
571 case PM8XXX_MPP_DIGITAL:
572 seq_puts(s, " digital ");
574 seq_printf(s, "dtest%d\n", pin->dtest);
575 } else if (pin->input && pin->output) {
577 seq_puts(s, "bi-dir high-z");
579 seq_printf(s, "bi-dir %dOhm", pin->pullup);
580 } else if (pin->input) {
582 seq_printf(s, "in dtest%d", pin->dtest);
584 seq_puts(s, "in gpio");
585 } else if (pin->output) {
589 seq_puts(s, pin->output_value ?
592 seq_puts(s, pin->output_value ?
593 "inverted" : "follow");
597 case PM8XXX_MPP_ANALOG:
598 seq_puts(s, " analog ");
600 seq_printf(s, "out %s ", aout_lvls[pin->aout_level]);
602 seq_puts(s, pin->output_value ?
605 seq_puts(s, pin->output_value ?
606 "inverted" : "follow");
609 seq_printf(s, "input mux %s", amuxs[pin->amux]);
612 case PM8XXX_MPP_SINK:
613 seq_printf(s, " sink %dmA ", pin->drive_strength);
615 seq_printf(s, "dtest%d", pin->dtest);
618 seq_puts(s, pin->output_value ?
621 seq_puts(s, pin->output_value ?
622 "inverted" : "follow");
630 static void pm8xxx_mpp_dbg_show(struct seq_file *s, struct gpio_chip *chip)
632 unsigned gpio = chip->base;
635 for (i = 0; i < chip->ngpio; i++, gpio++) {
636 pm8xxx_mpp_dbg_show_one(s, NULL, chip, i, gpio);
642 #define msm_mpp_dbg_show NULL
645 static struct gpio_chip pm8xxx_mpp_template = {
646 .direction_input = pm8xxx_mpp_direction_input,
647 .direction_output = pm8xxx_mpp_direction_output,
648 .get = pm8xxx_mpp_get,
649 .set = pm8xxx_mpp_set,
650 .of_xlate = pm8xxx_mpp_of_xlate,
651 .to_irq = pm8xxx_mpp_to_irq,
652 .dbg_show = pm8xxx_mpp_dbg_show,
653 .owner = THIS_MODULE,
656 static int pm8xxx_pin_populate(struct pm8xxx_mpp *pctrl,
657 struct pm8xxx_pin_data *pin)
665 ret = regmap_read(pctrl->regmap, pin->reg, &val);
667 dev_err(pctrl->dev, "failed to read register\n");
671 type = (val >> 5) & 7;
672 level = (val >> 2) & 7;
676 case PM8XXX_MPP_TYPE_D_INPUT:
677 pin->mode = PM8XXX_MPP_DIGITAL;
679 pin->power_source = level;
682 case PM8XXX_MPP_TYPE_D_OUTPUT:
683 pin->mode = PM8XXX_MPP_DIGITAL;
685 pin->power_source = level;
686 pin->output_value = !!(ctrl & BIT(0));
687 pin->paired = !!(ctrl & BIT(1));
689 case PM8XXX_MPP_TYPE_D_BI_DIR:
690 pin->mode = PM8XXX_MPP_DIGITAL;
693 pin->power_source = level;
695 case PM8XXX_MPP_BI_PULLUP_1KOHM:
698 case PM8XXX_MPP_BI_PULLUP_OPEN:
701 case PM8XXX_MPP_BI_PULLUP_10KOHM:
704 case PM8XXX_MPP_BI_PULLUP_30KOHM:
709 case PM8XXX_MPP_TYPE_A_INPUT:
710 pin->mode = PM8XXX_MPP_ANALOG;
714 case PM8XXX_MPP_TYPE_A_OUTPUT:
715 pin->mode = PM8XXX_MPP_ANALOG;
717 pin->aout_level = level;
718 pin->output_value = !!(ctrl & BIT(0));
719 pin->paired = !!(ctrl & BIT(1));
721 case PM8XXX_MPP_TYPE_SINK:
722 pin->mode = PM8XXX_MPP_SINK;
723 pin->drive_strength = 5 * (level + 1);
724 pin->output_value = !!(ctrl & BIT(0));
725 pin->paired = !!(ctrl & BIT(1));
727 case PM8XXX_MPP_TYPE_DTEST_SINK:
728 pin->mode = PM8XXX_MPP_SINK;
729 pin->dtest = ctrl + 1;
730 pin->drive_strength = 5 * (level + 1);
732 case PM8XXX_MPP_TYPE_DTEST_OUTPUT:
733 pin->mode = PM8XXX_MPP_DIGITAL;
734 pin->power_source = level;
743 static const struct of_device_id pm8xxx_mpp_of_match[] = {
744 { .compatible = "qcom,pm8018-mpp", .data = (void *)6 },
745 { .compatible = "qcom,pm8038-mpp", .data = (void *)6 },
746 { .compatible = "qcom,pm8917-mpp", .data = (void *)10 },
747 { .compatible = "qcom,pm8821-mpp", .data = (void *)4 },
748 { .compatible = "qcom,pm8921-mpp", .data = (void *)12 },
751 MODULE_DEVICE_TABLE(of, pm8xxx_mpp_of_match);
753 static int pm8xxx_mpp_probe(struct platform_device *pdev)
755 struct pm8xxx_pin_data *pin_data;
756 struct pinctrl_pin_desc *pins;
757 struct pm8xxx_mpp *pctrl;
761 pctrl = devm_kzalloc(&pdev->dev, sizeof(*pctrl), GFP_KERNEL);
765 pctrl->dev = &pdev->dev;
766 pctrl->npins = (unsigned)of_device_get_match_data(&pdev->dev);
768 pctrl->regmap = dev_get_regmap(pdev->dev.parent, NULL);
769 if (!pctrl->regmap) {
770 dev_err(&pdev->dev, "parent regmap unavailable\n");
774 pctrl->desc = pm8xxx_pinctrl_desc;
775 pctrl->desc.npins = pctrl->npins;
777 pins = devm_kcalloc(&pdev->dev,
779 sizeof(struct pinctrl_pin_desc),
784 pin_data = devm_kcalloc(&pdev->dev,
786 sizeof(struct pm8xxx_pin_data),
791 for (i = 0; i < pctrl->desc.npins; i++) {
792 pin_data[i].reg = SSBI_REG_ADDR_MPP(i);
793 pin_data[i].irq = platform_get_irq(pdev, i);
794 if (pin_data[i].irq < 0) {
796 "missing interrupts for pin %d\n", i);
797 return pin_data[i].irq;
800 ret = pm8xxx_pin_populate(pctrl, &pin_data[i]);
805 pins[i].name = pm8xxx_groups[i];
806 pins[i].drv_data = &pin_data[i];
808 pctrl->desc.pins = pins;
810 pctrl->desc.num_custom_params = ARRAY_SIZE(pm8xxx_mpp_bindings);
811 pctrl->desc.custom_params = pm8xxx_mpp_bindings;
812 #ifdef CONFIG_DEBUG_FS
813 pctrl->desc.custom_conf_items = pm8xxx_conf_items;
816 pctrl->pctrl = pinctrl_register(&pctrl->desc, &pdev->dev, pctrl);
818 dev_err(&pdev->dev, "couldn't register pm8xxx mpp driver\n");
822 pctrl->chip = pm8xxx_mpp_template;
823 pctrl->chip.base = -1;
824 pctrl->chip.dev = &pdev->dev;
825 pctrl->chip.of_node = pdev->dev.of_node;
826 pctrl->chip.of_gpio_n_cells = 2;
827 pctrl->chip.label = dev_name(pctrl->dev);
828 pctrl->chip.ngpio = pctrl->npins;
829 ret = gpiochip_add(&pctrl->chip);
831 dev_err(&pdev->dev, "failed register gpiochip\n");
832 goto unregister_pinctrl;
835 ret = gpiochip_add_pin_range(&pctrl->chip,
836 dev_name(pctrl->dev),
837 0, 0, pctrl->chip.ngpio);
839 dev_err(pctrl->dev, "failed to add pin range\n");
840 goto unregister_gpiochip;
843 platform_set_drvdata(pdev, pctrl);
845 dev_dbg(&pdev->dev, "Qualcomm pm8xxx mpp driver probed\n");
850 gpiochip_remove(&pctrl->chip);
853 pinctrl_unregister(pctrl->pctrl);
858 static int pm8xxx_mpp_remove(struct platform_device *pdev)
860 struct pm8xxx_mpp *pctrl = platform_get_drvdata(pdev);
862 gpiochip_remove(&pctrl->chip);
864 pinctrl_unregister(pctrl->pctrl);
869 static struct platform_driver pm8xxx_mpp_driver = {
871 .name = "qcom-ssbi-mpp",
872 .of_match_table = pm8xxx_mpp_of_match,
874 .probe = pm8xxx_mpp_probe,
875 .remove = pm8xxx_mpp_remove,
878 module_platform_driver(pm8xxx_mpp_driver);
880 MODULE_AUTHOR("Bjorn Andersson <bjorn.andersson@sonymobile.com>");
881 MODULE_DESCRIPTION("Qualcomm PM8xxx MPP driver");
882 MODULE_LICENSE("GPL v2");