2 * Philips UCB1400 GPIO driver
4 * Author: Marek Vasut <marek.vasut@gmail.com>
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.
12 #include <linux/module.h>
13 #include <linux/ucb1400.h>
15 static int ucb1400_gpio_dir_in(struct gpio_chip
*gc
, unsigned off
)
17 struct ucb1400_gpio
*gpio
;
18 gpio
= container_of(gc
, struct ucb1400_gpio
, gc
);
19 ucb1400_gpio_set_direction(gpio
->ac97
, off
, 0);
23 static int ucb1400_gpio_dir_out(struct gpio_chip
*gc
, unsigned off
, int val
)
25 struct ucb1400_gpio
*gpio
;
26 gpio
= container_of(gc
, struct ucb1400_gpio
, gc
);
27 ucb1400_gpio_set_direction(gpio
->ac97
, off
, 1);
28 ucb1400_gpio_set_value(gpio
->ac97
, off
, val
);
32 static int ucb1400_gpio_get(struct gpio_chip
*gc
, unsigned off
)
34 struct ucb1400_gpio
*gpio
;
35 gpio
= container_of(gc
, struct ucb1400_gpio
, gc
);
36 return ucb1400_gpio_get_value(gpio
->ac97
, off
);
39 static void ucb1400_gpio_set(struct gpio_chip
*gc
, unsigned off
, int val
)
41 struct ucb1400_gpio
*gpio
;
42 gpio
= container_of(gc
, struct ucb1400_gpio
, gc
);
43 ucb1400_gpio_set_value(gpio
->ac97
, off
, val
);
46 static int ucb1400_gpio_probe(struct platform_device
*dev
)
48 struct ucb1400_gpio
*ucb
= dev_get_platdata(&dev
->dev
);
51 if (!(ucb
&& ucb
->gpio_offset
)) {
56 platform_set_drvdata(dev
, ucb
);
58 ucb
->gc
.label
= "ucb1400_gpio";
59 ucb
->gc
.base
= ucb
->gpio_offset
;
61 ucb
->gc
.owner
= THIS_MODULE
;
63 ucb
->gc
.direction_input
= ucb1400_gpio_dir_in
;
64 ucb
->gc
.direction_output
= ucb1400_gpio_dir_out
;
65 ucb
->gc
.get
= ucb1400_gpio_get
;
66 ucb
->gc
.set
= ucb1400_gpio_set
;
67 ucb
->gc
.can_sleep
= 1;
69 err
= gpiochip_add(&ucb
->gc
);
73 if (ucb
&& ucb
->gpio_setup
)
74 err
= ucb
->gpio_setup(&dev
->dev
, ucb
->gc
.ngpio
);
81 static int ucb1400_gpio_remove(struct platform_device
*dev
)
84 struct ucb1400_gpio
*ucb
= platform_get_drvdata(dev
);
86 if (ucb
&& ucb
->gpio_teardown
) {
87 err
= ucb
->gpio_teardown(&dev
->dev
, ucb
->gc
.ngpio
);
92 err
= gpiochip_remove(&ucb
->gc
);
96 static struct platform_driver ucb1400_gpio_driver
= {
97 .probe
= ucb1400_gpio_probe
,
98 .remove
= ucb1400_gpio_remove
,
100 .name
= "ucb1400_gpio"
104 module_platform_driver(ucb1400_gpio_driver
);
106 MODULE_DESCRIPTION("Philips UCB1400 GPIO driver");
107 MODULE_LICENSE("GPL");
108 MODULE_ALIAS("platform:ucb1400_gpio");