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Rabin Vincentd88b25b2010-05-10 23:43:47 +02001/*
2 * Copyright (C) ST-Ericsson SA 2010
3 *
4 * License Terms: GNU General Public License, version 2
5 * Author: Hanumath Prasad <hanumath.prasad@stericsson.com> for ST-Ericsson
6 * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
7 */
8
9#include <linux/module.h>
10#include <linux/init.h>
11#include <linux/platform_device.h>
12#include <linux/slab.h>
13#include <linux/gpio.h>
Lee Jones3113e672012-09-07 12:14:59 +010014#include <linux/of.h>
Rabin Vincentd88b25b2010-05-10 23:43:47 +020015#include <linux/interrupt.h>
Sundar Iyerc6eda6c2010-12-13 09:33:12 +053016#include <linux/mfd/tc3589x.h>
Rabin Vincentd88b25b2010-05-10 23:43:47 +020017
18/*
19 * These registers are modified under the irq bus lock and cached to avoid
20 * unnecessary writes in bus_sync_unlock.
21 */
22enum { REG_IBE, REG_IEV, REG_IS, REG_IE };
23
24#define CACHE_NR_REGS 4
25#define CACHE_NR_BANKS 3
26
Sundar Iyer20406eb2010-12-13 09:33:14 +053027struct tc3589x_gpio {
Rabin Vincentd88b25b2010-05-10 23:43:47 +020028 struct gpio_chip chip;
Sundar Iyer20406eb2010-12-13 09:33:14 +053029 struct tc3589x *tc3589x;
Rabin Vincentd88b25b2010-05-10 23:43:47 +020030 struct device *dev;
31 struct mutex irq_lock;
Rabin Vincentd88b25b2010-05-10 23:43:47 +020032 /* Caches of interrupt control registers for bus_lock */
33 u8 regs[CACHE_NR_REGS][CACHE_NR_BANKS];
34 u8 oldregs[CACHE_NR_REGS][CACHE_NR_BANKS];
35};
36
Sundar Iyer20406eb2010-12-13 09:33:14 +053037static inline struct tc3589x_gpio *to_tc3589x_gpio(struct gpio_chip *chip)
Rabin Vincentd88b25b2010-05-10 23:43:47 +020038{
Sundar Iyer20406eb2010-12-13 09:33:14 +053039 return container_of(chip, struct tc3589x_gpio, chip);
Rabin Vincentd88b25b2010-05-10 23:43:47 +020040}
41
Sundar Iyer20406eb2010-12-13 09:33:14 +053042static int tc3589x_gpio_get(struct gpio_chip *chip, unsigned offset)
Rabin Vincentd88b25b2010-05-10 23:43:47 +020043{
Sundar Iyer20406eb2010-12-13 09:33:14 +053044 struct tc3589x_gpio *tc3589x_gpio = to_tc3589x_gpio(chip);
45 struct tc3589x *tc3589x = tc3589x_gpio->tc3589x;
46 u8 reg = TC3589x_GPIODATA0 + (offset / 8) * 2;
Rabin Vincentd88b25b2010-05-10 23:43:47 +020047 u8 mask = 1 << (offset % 8);
48 int ret;
49
Sundar Iyer20406eb2010-12-13 09:33:14 +053050 ret = tc3589x_reg_read(tc3589x, reg);
Rabin Vincentd88b25b2010-05-10 23:43:47 +020051 if (ret < 0)
52 return ret;
53
54 return ret & mask;
55}
56
Sundar Iyer20406eb2010-12-13 09:33:14 +053057static void tc3589x_gpio_set(struct gpio_chip *chip, unsigned offset, int val)
Rabin Vincentd88b25b2010-05-10 23:43:47 +020058{
Sundar Iyer20406eb2010-12-13 09:33:14 +053059 struct tc3589x_gpio *tc3589x_gpio = to_tc3589x_gpio(chip);
60 struct tc3589x *tc3589x = tc3589x_gpio->tc3589x;
61 u8 reg = TC3589x_GPIODATA0 + (offset / 8) * 2;
Rabin Vincentd88b25b2010-05-10 23:43:47 +020062 unsigned pos = offset % 8;
63 u8 data[] = {!!val << pos, 1 << pos};
64
Sundar Iyer20406eb2010-12-13 09:33:14 +053065 tc3589x_block_write(tc3589x, reg, ARRAY_SIZE(data), data);
Rabin Vincentd88b25b2010-05-10 23:43:47 +020066}
67
Sundar Iyer20406eb2010-12-13 09:33:14 +053068static int tc3589x_gpio_direction_output(struct gpio_chip *chip,
Rabin Vincentd88b25b2010-05-10 23:43:47 +020069 unsigned offset, int val)
70{
Sundar Iyer20406eb2010-12-13 09:33:14 +053071 struct tc3589x_gpio *tc3589x_gpio = to_tc3589x_gpio(chip);
72 struct tc3589x *tc3589x = tc3589x_gpio->tc3589x;
73 u8 reg = TC3589x_GPIODIR0 + offset / 8;
Rabin Vincentd88b25b2010-05-10 23:43:47 +020074 unsigned pos = offset % 8;
75
Sundar Iyer20406eb2010-12-13 09:33:14 +053076 tc3589x_gpio_set(chip, offset, val);
Rabin Vincentd88b25b2010-05-10 23:43:47 +020077
Sundar Iyer20406eb2010-12-13 09:33:14 +053078 return tc3589x_set_bits(tc3589x, reg, 1 << pos, 1 << pos);
Rabin Vincentd88b25b2010-05-10 23:43:47 +020079}
80
Sundar Iyer20406eb2010-12-13 09:33:14 +053081static int tc3589x_gpio_direction_input(struct gpio_chip *chip,
Rabin Vincentd88b25b2010-05-10 23:43:47 +020082 unsigned offset)
83{
Sundar Iyer20406eb2010-12-13 09:33:14 +053084 struct tc3589x_gpio *tc3589x_gpio = to_tc3589x_gpio(chip);
85 struct tc3589x *tc3589x = tc3589x_gpio->tc3589x;
86 u8 reg = TC3589x_GPIODIR0 + offset / 8;
Rabin Vincentd88b25b2010-05-10 23:43:47 +020087 unsigned pos = offset % 8;
88
Sundar Iyer20406eb2010-12-13 09:33:14 +053089 return tc3589x_set_bits(tc3589x, reg, 1 << pos, 0);
Rabin Vincentd88b25b2010-05-10 23:43:47 +020090}
91
Rabin Vincentd88b25b2010-05-10 23:43:47 +020092static struct gpio_chip template_chip = {
Sundar Iyer20406eb2010-12-13 09:33:14 +053093 .label = "tc3589x",
Rabin Vincentd88b25b2010-05-10 23:43:47 +020094 .owner = THIS_MODULE,
Sundar Iyer20406eb2010-12-13 09:33:14 +053095 .direction_input = tc3589x_gpio_direction_input,
96 .get = tc3589x_gpio_get,
97 .direction_output = tc3589x_gpio_direction_output,
98 .set = tc3589x_gpio_set,
Linus Walleij9fb1f392013-12-04 14:42:46 +010099 .can_sleep = true,
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200100};
101
Lennert Buytenhek33fcc1b2011-01-12 17:00:19 -0800102static int tc3589x_gpio_irq_set_type(struct irq_data *d, unsigned int type)
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200103{
Linus Walleijcf42f1c2014-04-09 13:38:33 +0200104 struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
Linus Walleij0c9fc102015-08-27 14:05:26 +0200105 struct tc3589x_gpio *tc3589x_gpio = to_tc3589x_gpio(gc);
Lee Jonesefe4c942012-09-07 12:14:58 +0100106 int offset = d->hwirq;
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200107 int regoffset = offset / 8;
108 int mask = 1 << (offset % 8);
109
110 if (type == IRQ_TYPE_EDGE_BOTH) {
Sundar Iyer20406eb2010-12-13 09:33:14 +0530111 tc3589x_gpio->regs[REG_IBE][regoffset] |= mask;
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200112 return 0;
113 }
114
Sundar Iyer20406eb2010-12-13 09:33:14 +0530115 tc3589x_gpio->regs[REG_IBE][regoffset] &= ~mask;
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200116
117 if (type == IRQ_TYPE_LEVEL_LOW || type == IRQ_TYPE_LEVEL_HIGH)
Sundar Iyer20406eb2010-12-13 09:33:14 +0530118 tc3589x_gpio->regs[REG_IS][regoffset] |= mask;
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200119 else
Sundar Iyer20406eb2010-12-13 09:33:14 +0530120 tc3589x_gpio->regs[REG_IS][regoffset] &= ~mask;
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200121
122 if (type == IRQ_TYPE_EDGE_RISING || type == IRQ_TYPE_LEVEL_HIGH)
Sundar Iyer20406eb2010-12-13 09:33:14 +0530123 tc3589x_gpio->regs[REG_IEV][regoffset] |= mask;
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200124 else
Sundar Iyer20406eb2010-12-13 09:33:14 +0530125 tc3589x_gpio->regs[REG_IEV][regoffset] &= ~mask;
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200126
127 return 0;
128}
129
Lennert Buytenhek33fcc1b2011-01-12 17:00:19 -0800130static void tc3589x_gpio_irq_lock(struct irq_data *d)
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200131{
Linus Walleijcf42f1c2014-04-09 13:38:33 +0200132 struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
Linus Walleij0c9fc102015-08-27 14:05:26 +0200133 struct tc3589x_gpio *tc3589x_gpio = to_tc3589x_gpio(gc);
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200134
Sundar Iyer20406eb2010-12-13 09:33:14 +0530135 mutex_lock(&tc3589x_gpio->irq_lock);
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200136}
137
Lennert Buytenhek33fcc1b2011-01-12 17:00:19 -0800138static void tc3589x_gpio_irq_sync_unlock(struct irq_data *d)
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200139{
Linus Walleijcf42f1c2014-04-09 13:38:33 +0200140 struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
Linus Walleij0c9fc102015-08-27 14:05:26 +0200141 struct tc3589x_gpio *tc3589x_gpio = to_tc3589x_gpio(gc);
Sundar Iyer20406eb2010-12-13 09:33:14 +0530142 struct tc3589x *tc3589x = tc3589x_gpio->tc3589x;
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200143 static const u8 regmap[] = {
Sundar Iyer20406eb2010-12-13 09:33:14 +0530144 [REG_IBE] = TC3589x_GPIOIBE0,
145 [REG_IEV] = TC3589x_GPIOIEV0,
146 [REG_IS] = TC3589x_GPIOIS0,
147 [REG_IE] = TC3589x_GPIOIE0,
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200148 };
149 int i, j;
150
151 for (i = 0; i < CACHE_NR_REGS; i++) {
152 for (j = 0; j < CACHE_NR_BANKS; j++) {
Sundar Iyer20406eb2010-12-13 09:33:14 +0530153 u8 old = tc3589x_gpio->oldregs[i][j];
154 u8 new = tc3589x_gpio->regs[i][j];
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200155
156 if (new == old)
157 continue;
158
Sundar Iyer20406eb2010-12-13 09:33:14 +0530159 tc3589x_gpio->oldregs[i][j] = new;
160 tc3589x_reg_write(tc3589x, regmap[i] + j * 8, new);
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200161 }
162 }
163
Sundar Iyer20406eb2010-12-13 09:33:14 +0530164 mutex_unlock(&tc3589x_gpio->irq_lock);
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200165}
166
Lennert Buytenhek33fcc1b2011-01-12 17:00:19 -0800167static void tc3589x_gpio_irq_mask(struct irq_data *d)
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200168{
Linus Walleijcf42f1c2014-04-09 13:38:33 +0200169 struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
Linus Walleij0c9fc102015-08-27 14:05:26 +0200170 struct tc3589x_gpio *tc3589x_gpio = to_tc3589x_gpio(gc);
Lee Jonesefe4c942012-09-07 12:14:58 +0100171 int offset = d->hwirq;
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200172 int regoffset = offset / 8;
173 int mask = 1 << (offset % 8);
174
Sundar Iyer20406eb2010-12-13 09:33:14 +0530175 tc3589x_gpio->regs[REG_IE][regoffset] &= ~mask;
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200176}
177
Lennert Buytenhek33fcc1b2011-01-12 17:00:19 -0800178static void tc3589x_gpio_irq_unmask(struct irq_data *d)
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200179{
Linus Walleijcf42f1c2014-04-09 13:38:33 +0200180 struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
Linus Walleij0c9fc102015-08-27 14:05:26 +0200181 struct tc3589x_gpio *tc3589x_gpio = to_tc3589x_gpio(gc);
Lee Jonesefe4c942012-09-07 12:14:58 +0100182 int offset = d->hwirq;
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200183 int regoffset = offset / 8;
184 int mask = 1 << (offset % 8);
185
Sundar Iyer20406eb2010-12-13 09:33:14 +0530186 tc3589x_gpio->regs[REG_IE][regoffset] |= mask;
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200187}
188
Sundar Iyer20406eb2010-12-13 09:33:14 +0530189static struct irq_chip tc3589x_gpio_irq_chip = {
190 .name = "tc3589x-gpio",
Lennert Buytenhek33fcc1b2011-01-12 17:00:19 -0800191 .irq_bus_lock = tc3589x_gpio_irq_lock,
192 .irq_bus_sync_unlock = tc3589x_gpio_irq_sync_unlock,
193 .irq_mask = tc3589x_gpio_irq_mask,
194 .irq_unmask = tc3589x_gpio_irq_unmask,
195 .irq_set_type = tc3589x_gpio_irq_set_type,
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200196};
197
Sundar Iyer20406eb2010-12-13 09:33:14 +0530198static irqreturn_t tc3589x_gpio_irq(int irq, void *dev)
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200199{
Sundar Iyer20406eb2010-12-13 09:33:14 +0530200 struct tc3589x_gpio *tc3589x_gpio = dev;
201 struct tc3589x *tc3589x = tc3589x_gpio->tc3589x;
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200202 u8 status[CACHE_NR_BANKS];
203 int ret;
204 int i;
205
Sundar Iyer20406eb2010-12-13 09:33:14 +0530206 ret = tc3589x_block_read(tc3589x, TC3589x_GPIOMIS0,
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200207 ARRAY_SIZE(status), status);
208 if (ret < 0)
209 return IRQ_NONE;
210
211 for (i = 0; i < ARRAY_SIZE(status); i++) {
212 unsigned int stat = status[i];
213 if (!stat)
214 continue;
215
216 while (stat) {
217 int bit = __ffs(stat);
218 int line = i * 8 + bit;
Linus Walleijcf42f1c2014-04-09 13:38:33 +0200219 int irq = irq_find_mapping(tc3589x_gpio->chip.irqdomain,
220 line);
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200221
Linus Walleije3003762013-10-11 19:06:12 +0200222 handle_nested_irq(irq);
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200223 stat &= ~(1 << bit);
224 }
225
Sundar Iyer20406eb2010-12-13 09:33:14 +0530226 tc3589x_reg_write(tc3589x, TC3589x_GPIOIC0 + i, status[i]);
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200227 }
228
229 return IRQ_HANDLED;
230}
231
Bill Pemberton38363092012-11-19 13:22:34 -0500232static int tc3589x_gpio_probe(struct platform_device *pdev)
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200233{
Sundar Iyer20406eb2010-12-13 09:33:14 +0530234 struct tc3589x *tc3589x = dev_get_drvdata(pdev->dev.parent);
Lee Jones3113e672012-09-07 12:14:59 +0100235 struct device_node *np = pdev->dev.of_node;
Sundar Iyer20406eb2010-12-13 09:33:14 +0530236 struct tc3589x_gpio *tc3589x_gpio;
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200237 int ret;
238 int irq;
239
Linus Walleij53e41f52014-12-15 10:39:47 +0100240 if (!np) {
241 dev_err(&pdev->dev, "No Device Tree node found\n");
Lee Jones3113e672012-09-07 12:14:59 +0100242 return -EINVAL;
243 }
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200244
245 irq = platform_get_irq(pdev, 0);
246 if (irq < 0)
247 return irq;
248
Linus Walleij033f2752014-04-09 12:38:56 +0200249 tc3589x_gpio = devm_kzalloc(&pdev->dev, sizeof(struct tc3589x_gpio),
250 GFP_KERNEL);
Sundar Iyer20406eb2010-12-13 09:33:14 +0530251 if (!tc3589x_gpio)
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200252 return -ENOMEM;
253
Sundar Iyer20406eb2010-12-13 09:33:14 +0530254 mutex_init(&tc3589x_gpio->irq_lock);
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200255
Sundar Iyer20406eb2010-12-13 09:33:14 +0530256 tc3589x_gpio->dev = &pdev->dev;
257 tc3589x_gpio->tc3589x = tc3589x;
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200258
Sundar Iyer20406eb2010-12-13 09:33:14 +0530259 tc3589x_gpio->chip = template_chip;
260 tc3589x_gpio->chip.ngpio = tc3589x->num_gpio;
261 tc3589x_gpio->chip.dev = &pdev->dev;
Linus Walleij90f2d0f2014-10-28 11:06:56 +0100262 tc3589x_gpio->chip.base = -1;
Laurent Navete90c6362013-03-20 13:16:02 +0100263 tc3589x_gpio->chip.of_node = np;
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200264
265 /* Bring the GPIO module out of reset */
Sundar Iyer20406eb2010-12-13 09:33:14 +0530266 ret = tc3589x_set_bits(tc3589x, TC3589x_RSTCTRL,
267 TC3589x_RSTCTRL_GPIRST, 0);
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200268 if (ret < 0)
Linus Walleij033f2752014-04-09 12:38:56 +0200269 return ret;
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200270
Linus Walleij033f2752014-04-09 12:38:56 +0200271 ret = devm_request_threaded_irq(&pdev->dev,
272 irq, NULL, tc3589x_gpio_irq,
273 IRQF_ONESHOT, "tc3589x-gpio",
274 tc3589x_gpio);
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200275 if (ret) {
276 dev_err(&pdev->dev, "unable to get irq: %d\n", ret);
Linus Walleij033f2752014-04-09 12:38:56 +0200277 return ret;
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200278 }
279
Sundar Iyer20406eb2010-12-13 09:33:14 +0530280 ret = gpiochip_add(&tc3589x_gpio->chip);
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200281 if (ret) {
282 dev_err(&pdev->dev, "unable to add gpiochip: %d\n", ret);
Linus Walleij033f2752014-04-09 12:38:56 +0200283 return ret;
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200284 }
285
Linus Walleijcf42f1c2014-04-09 13:38:33 +0200286 ret = gpiochip_irqchip_add(&tc3589x_gpio->chip,
287 &tc3589x_gpio_irq_chip,
288 0,
289 handle_simple_irq,
290 IRQ_TYPE_NONE);
291 if (ret) {
292 dev_err(&pdev->dev,
293 "could not connect irqchip to gpiochip\n");
294 return ret;
295 }
296
Linus Walleij3f97d5fc2014-09-26 14:19:52 +0200297 gpiochip_set_chained_irqchip(&tc3589x_gpio->chip,
298 &tc3589x_gpio_irq_chip,
299 irq,
300 NULL);
301
Sundar Iyer20406eb2010-12-13 09:33:14 +0530302 platform_set_drvdata(pdev, tc3589x_gpio);
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200303
304 return 0;
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200305}
306
Bill Pemberton206210c2012-11-19 13:25:50 -0500307static int tc3589x_gpio_remove(struct platform_device *pdev)
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200308{
Sundar Iyer20406eb2010-12-13 09:33:14 +0530309 struct tc3589x_gpio *tc3589x_gpio = platform_get_drvdata(pdev);
Rabin Vincentf0a7a982010-09-13 13:04:02 +0100310
abdoulaye berthe9f5132a2014-07-12 22:30:12 +0200311 gpiochip_remove(&tc3589x_gpio->chip);
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200312
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200313 return 0;
314}
315
Sundar Iyer20406eb2010-12-13 09:33:14 +0530316static struct platform_driver tc3589x_gpio_driver = {
317 .driver.name = "tc3589x-gpio",
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200318 .driver.owner = THIS_MODULE,
Sundar Iyer20406eb2010-12-13 09:33:14 +0530319 .probe = tc3589x_gpio_probe,
Bill Pemberton8283c4f2012-11-19 13:20:08 -0500320 .remove = tc3589x_gpio_remove,
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200321};
322
Sundar Iyer20406eb2010-12-13 09:33:14 +0530323static int __init tc3589x_gpio_init(void)
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200324{
Sundar Iyer20406eb2010-12-13 09:33:14 +0530325 return platform_driver_register(&tc3589x_gpio_driver);
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200326}
Sundar Iyer20406eb2010-12-13 09:33:14 +0530327subsys_initcall(tc3589x_gpio_init);
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200328
Sundar Iyer20406eb2010-12-13 09:33:14 +0530329static void __exit tc3589x_gpio_exit(void)
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200330{
Sundar Iyer20406eb2010-12-13 09:33:14 +0530331 platform_driver_unregister(&tc3589x_gpio_driver);
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200332}
Sundar Iyer20406eb2010-12-13 09:33:14 +0530333module_exit(tc3589x_gpio_exit);
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200334
335MODULE_LICENSE("GPL v2");
Sundar Iyer20406eb2010-12-13 09:33:14 +0530336MODULE_DESCRIPTION("TC3589x GPIO driver");
Rabin Vincentd88b25b2010-05-10 23:43:47 +0200337MODULE_AUTHOR("Hanumath Prasad, Rabin Vincent");