aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm/plat-samsung/include/plat/gpio-cfg-helpers.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/plat-samsung/include/plat/gpio-cfg-helpers.h')
-rw-r--r--arch/arm/plat-samsung/include/plat/gpio-cfg-helpers.h172
1 files changed, 42 insertions, 130 deletions
diff --git a/arch/arm/plat-samsung/include/plat/gpio-cfg-helpers.h b/arch/arm/plat-samsung/include/plat/gpio-cfg-helpers.h
index 9a4e53d52967..a181d7ce81cf 100644
--- a/arch/arm/plat-samsung/include/plat/gpio-cfg-helpers.h
+++ b/arch/arm/plat-samsung/include/plat/gpio-cfg-helpers.h
@@ -1,11 +1,11 @@
1/* linux/arch/arm/plat-s3c/include/plat/gpio-cfg-helper.h 1/* linux/arch/arm/plat-samsung/include/plat/gpio-cfg-helper.h
2 * 2 *
3 * Copyright 2008 Openmoko, Inc. 3 * Copyright 2008 Openmoko, Inc.
4 * Copyright 2008 Simtec Electronics 4 * Copyright 2008 Simtec Electronics
5 * http://armlinux.simtec.co.uk/ 5 * http://armlinux.simtec.co.uk/
6 * Ben Dooks <ben@simtec.co.uk> 6 * Ben Dooks <ben@simtec.co.uk>
7 * 7 *
8 * S3C Platform - GPIO pin configuration helper definitions 8 * Samsung Platform - GPIO pin configuration helper definitions
9 * 9 *
10 * This program is free software; you can redistribute it and/or modify 10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as 11 * it under the terms of the GNU General Public License version 2 as
@@ -24,120 +24,30 @@
24 * by disabling interrupts. 24 * by disabling interrupts.
25*/ 25*/
26 26
27static inline int s3c_gpio_do_setcfg(struct s3c_gpio_chip *chip, 27static inline int samsung_gpio_do_setcfg(struct samsung_gpio_chip *chip,
28 unsigned int off, unsigned int config) 28 unsigned int off, unsigned int config)
29{ 29{
30 return (chip->config->set_config)(chip, off, config); 30 return (chip->config->set_config)(chip, off, config);
31} 31}
32 32
33static inline unsigned s3c_gpio_do_getcfg(struct s3c_gpio_chip *chip, 33static inline unsigned samsung_gpio_do_getcfg(struct samsung_gpio_chip *chip,
34 unsigned int off) 34 unsigned int off)
35{ 35{
36 return (chip->config->get_config)(chip, off); 36 return (chip->config->get_config)(chip, off);
37} 37}
38 38
39static inline int s3c_gpio_do_setpull(struct s3c_gpio_chip *chip, 39static inline int samsung_gpio_do_setpull(struct samsung_gpio_chip *chip,
40 unsigned int off, s3c_gpio_pull_t pull) 40 unsigned int off, samsung_gpio_pull_t pull)
41{ 41{
42 return (chip->config->set_pull)(chip, off, pull); 42 return (chip->config->set_pull)(chip, off, pull);
43} 43}
44 44
45static inline s3c_gpio_pull_t s3c_gpio_do_getpull(struct s3c_gpio_chip *chip, 45static inline samsung_gpio_pull_t samsung_gpio_do_getpull(struct samsung_gpio_chip *chip,
46 unsigned int off) 46 unsigned int off)
47{ 47{
48 return chip->config->get_pull(chip, off); 48 return chip->config->get_pull(chip, off);
49} 49}
50 50
51/**
52 * s3c_gpio_setcfg_s3c24xx - S3C24XX style GPIO configuration.
53 * @chip: The gpio chip that is being configured.
54 * @off: The offset for the GPIO being configured.
55 * @cfg: The configuration value to set.
56 *
57 * This helper deal with the GPIO cases where the control register
58 * has two bits of configuration per gpio, which have the following
59 * functions:
60 * 00 = input
61 * 01 = output
62 * 1x = special function
63*/
64extern int s3c_gpio_setcfg_s3c24xx(struct s3c_gpio_chip *chip,
65 unsigned int off, unsigned int cfg);
66
67/**
68 * s3c_gpio_getcfg_s3c24xx - S3C24XX style GPIO configuration read.
69 * @chip: The gpio chip that is being configured.
70 * @off: The offset for the GPIO being configured.
71 *
72 * The reverse of s3c_gpio_setcfg_s3c24xx(). Will return a value whicg
73 * could be directly passed back to s3c_gpio_setcfg_s3c24xx(), from the
74 * S3C_GPIO_SPECIAL() macro.
75 */
76unsigned int s3c_gpio_getcfg_s3c24xx(struct s3c_gpio_chip *chip,
77 unsigned int off);
78
79/**
80 * s3c_gpio_setcfg_s3c24xx_a - S3C24XX style GPIO configuration (Bank A)
81 * @chip: The gpio chip that is being configured.
82 * @off: The offset for the GPIO being configured.
83 * @cfg: The configuration value to set.
84 *
85 * This helper deal with the GPIO cases where the control register
86 * has one bit of configuration for the gpio, where setting the bit
87 * means the pin is in special function mode and unset means output.
88*/
89extern int s3c_gpio_setcfg_s3c24xx_a(struct s3c_gpio_chip *chip,
90 unsigned int off, unsigned int cfg);
91
92
93/**
94 * s3c_gpio_getcfg_s3c24xx_a - S3C24XX style GPIO configuration read (Bank A)
95 * @chip: The gpio chip that is being configured.
96 * @off: The offset for the GPIO being configured.
97 *
98 * The reverse of s3c_gpio_setcfg_s3c24xx_a() turning an GPIO into a usable
99 * GPIO configuration value.
100 *
101 * @sa s3c_gpio_getcfg_s3c24xx
102 * @sa s3c_gpio_getcfg_s3c64xx_4bit
103 */
104extern unsigned s3c_gpio_getcfg_s3c24xx_a(struct s3c_gpio_chip *chip,
105 unsigned int off);
106
107/**
108 * s3c_gpio_setcfg_s3c64xx_4bit - S3C64XX 4bit single register GPIO config.
109 * @chip: The gpio chip that is being configured.
110 * @off: The offset for the GPIO being configured.
111 * @cfg: The configuration value to set.
112 *
113 * This helper deal with the GPIO cases where the control register has 4 bits
114 * of control per GPIO, generally in the form of:
115 * 0000 = Input
116 * 0001 = Output
117 * others = Special functions (dependent on bank)
118 *
119 * Note, since the code to deal with the case where there are two control
120 * registers instead of one, we do not have a separate set of functions for
121 * each case.
122*/
123extern int s3c_gpio_setcfg_s3c64xx_4bit(struct s3c_gpio_chip *chip,
124 unsigned int off, unsigned int cfg);
125
126
127/**
128 * s3c_gpio_getcfg_s3c64xx_4bit - S3C64XX 4bit single register GPIO config read.
129 * @chip: The gpio chip that is being configured.
130 * @off: The offset for the GPIO being configured.
131 *
132 * The reverse of s3c_gpio_setcfg_s3c64xx_4bit(), turning a gpio configuration
133 * register setting into a value the software can use, such as could be passed
134 * to s3c_gpio_setcfg_s3c64xx_4bit().
135 *
136 * @sa s3c_gpio_getcfg_s3c24xx
137 */
138extern unsigned s3c_gpio_getcfg_s3c64xx_4bit(struct s3c_gpio_chip *chip,
139 unsigned int off);
140
141/* Pull-{up,down} resistor controls. 51/* Pull-{up,down} resistor controls.
142 * 52 *
143 * S3C2410,S3C2440 = Pull-UP, 53 * S3C2410,S3C2440 = Pull-UP,
@@ -147,7 +57,7 @@ extern unsigned s3c_gpio_getcfg_s3c64xx_4bit(struct s3c_gpio_chip *chip,
147 */ 57 */
148 58
149/** 59/**
150 * s3c_gpio_setpull_1up() - Pull configuration for choice of up or none. 60 * s3c24xx_gpio_setpull_1up() - Pull configuration for choice of up or none.
151 * @chip: The gpio chip that is being configured. 61 * @chip: The gpio chip that is being configured.
152 * @off: The offset for the GPIO being configured. 62 * @off: The offset for the GPIO being configured.
153 * @param: pull: The pull mode being requested. 63 * @param: pull: The pull mode being requested.
@@ -155,11 +65,11 @@ extern unsigned s3c_gpio_getcfg_s3c64xx_4bit(struct s3c_gpio_chip *chip,
155 * This is a helper function for the case where we have GPIOs with one 65 * This is a helper function for the case where we have GPIOs with one
156 * bit configuring the presence of a pull-up resistor. 66 * bit configuring the presence of a pull-up resistor.
157 */ 67 */
158extern int s3c_gpio_setpull_1up(struct s3c_gpio_chip *chip, 68extern int s3c24xx_gpio_setpull_1up(struct samsung_gpio_chip *chip,
159 unsigned int off, s3c_gpio_pull_t pull); 69 unsigned int off, samsung_gpio_pull_t pull);
160 70
161/** 71/**
162 * s3c_gpio_setpull_1down() - Pull configuration for choice of down or none 72 * s3c24xx_gpio_setpull_1down() - Pull configuration for choice of down or none
163 * @chip: The gpio chip that is being configured 73 * @chip: The gpio chip that is being configured
164 * @off: The offset for the GPIO being configured 74 * @off: The offset for the GPIO being configured
165 * @param: pull: The pull mode being requested 75 * @param: pull: The pull mode being requested
@@ -167,11 +77,13 @@ extern int s3c_gpio_setpull_1up(struct s3c_gpio_chip *chip,
167 * This is a helper function for the case where we have GPIOs with one 77 * This is a helper function for the case where we have GPIOs with one
168 * bit configuring the presence of a pull-down resistor. 78 * bit configuring the presence of a pull-down resistor.
169 */ 79 */
170extern int s3c_gpio_setpull_1down(struct s3c_gpio_chip *chip, 80extern int s3c24xx_gpio_setpull_1down(struct samsung_gpio_chip *chip,
171 unsigned int off, s3c_gpio_pull_t pull); 81 unsigned int off, samsung_gpio_pull_t pull);
172 82
173/** 83/**
174 * s3c_gpio_setpull_upown() - Pull configuration for choice of up, down or none 84 * samsung_gpio_setpull_upown() - Pull configuration for choice of up,
85 * down or none
86 *
175 * @chip: The gpio chip that is being configured. 87 * @chip: The gpio chip that is being configured.
176 * @off: The offset for the GPIO being configured. 88 * @off: The offset for the GPIO being configured.
177 * @param: pull: The pull mode being requested. 89 * @param: pull: The pull mode being requested.
@@ -183,45 +95,46 @@ extern int s3c_gpio_setpull_1down(struct s3c_gpio_chip *chip,
183 * 01 = Pull-up resistor connected 95 * 01 = Pull-up resistor connected
184 * 10 = Pull-down resistor connected 96 * 10 = Pull-down resistor connected
185 */ 97 */
186extern int s3c_gpio_setpull_updown(struct s3c_gpio_chip *chip, 98extern int samsung_gpio_setpull_updown(struct samsung_gpio_chip *chip,
187 unsigned int off, s3c_gpio_pull_t pull); 99 unsigned int off, samsung_gpio_pull_t pull);
188
189 100
190/** 101/**
191 * s3c_gpio_getpull_updown() - Get configuration for choice of up, down or none 102 * samsung_gpio_getpull_updown() - Get configuration for choice of up,
103 * down or none
104 *
192 * @chip: The gpio chip that the GPIO pin belongs to 105 * @chip: The gpio chip that the GPIO pin belongs to
193 * @off: The offset to the pin to get the configuration of. 106 * @off: The offset to the pin to get the configuration of.
194 * 107 *
195 * This helper function reads the state of the pull-{up,down} resistor for the 108 * This helper function reads the state of the pull-{up,down} resistor
196 * given GPIO in the same case as s3c_gpio_setpull_upown. 109 * for the given GPIO in the same case as samsung_gpio_setpull_upown.
197*/ 110*/
198extern s3c_gpio_pull_t s3c_gpio_getpull_updown(struct s3c_gpio_chip *chip, 111extern samsung_gpio_pull_t samsung_gpio_getpull_updown(struct samsung_gpio_chip *chip,
199 unsigned int off); 112 unsigned int off);
200 113
201/** 114/**
202 * s3c_gpio_getpull_1up() - Get configuration for choice of up or none 115 * s3c24xx_gpio_getpull_1up() - Get configuration for choice of up or none
203 * @chip: The gpio chip that the GPIO pin belongs to 116 * @chip: The gpio chip that the GPIO pin belongs to
204 * @off: The offset to the pin to get the configuration of. 117 * @off: The offset to the pin to get the configuration of.
205 * 118 *
206 * This helper function reads the state of the pull-up resistor for the 119 * This helper function reads the state of the pull-up resistor for the
207 * given GPIO in the same case as s3c_gpio_setpull_1up. 120 * given GPIO in the same case as s3c24xx_gpio_setpull_1up.
208*/ 121*/
209extern s3c_gpio_pull_t s3c_gpio_getpull_1up(struct s3c_gpio_chip *chip, 122extern samsung_gpio_pull_t s3c24xx_gpio_getpull_1up(struct samsung_gpio_chip *chip,
210 unsigned int off); 123 unsigned int off);
211 124
212/** 125/**
213 * s3c_gpio_getpull_1down() - Get configuration for choice of down or none 126 * s3c24xx_gpio_getpull_1down() - Get configuration for choice of down or none
214 * @chip: The gpio chip that the GPIO pin belongs to 127 * @chip: The gpio chip that the GPIO pin belongs to
215 * @off: The offset to the pin to get the configuration of. 128 * @off: The offset to the pin to get the configuration of.
216 * 129 *
217 * This helper function reads the state of the pull-down resistor for the 130 * This helper function reads the state of the pull-down resistor for the
218 * given GPIO in the same case as s3c_gpio_setpull_1down. 131 * given GPIO in the same case as s3c24xx_gpio_setpull_1down.
219*/ 132*/
220extern s3c_gpio_pull_t s3c_gpio_getpull_1down(struct s3c_gpio_chip *chip, 133extern samsung_gpio_pull_t s3c24xx_gpio_getpull_1down(struct samsung_gpio_chip *chip,
221 unsigned int off); 134 unsigned int off);
222 135
223/** 136/**
224 * s3c_gpio_setpull_s3c2443() - Pull configuration for s3c2443. 137 * s3c2443_gpio_setpull() - Pull configuration for s3c2443.
225 * @chip: The gpio chip that is being configured. 138 * @chip: The gpio chip that is being configured.
226 * @off: The offset for the GPIO being configured. 139 * @off: The offset for the GPIO being configured.
227 * @param: pull: The pull mode being requested. 140 * @param: pull: The pull mode being requested.
@@ -233,19 +146,18 @@ extern s3c_gpio_pull_t s3c_gpio_getpull_1down(struct s3c_gpio_chip *chip,
233 * 10 = Pull-down resistor connected 146 * 10 = Pull-down resistor connected
234 * x1 = No pull up resistor 147 * x1 = No pull up resistor
235 */ 148 */
236extern int s3c_gpio_setpull_s3c2443(struct s3c_gpio_chip *chip, 149extern int s3c2443_gpio_setpull(struct samsung_gpio_chip *chip,
237 unsigned int off, s3c_gpio_pull_t pull); 150 unsigned int off, samsung_gpio_pull_t pull);
238 151
239/** 152/**
240 * s3c_gpio_getpull_s3c2443() - Get configuration for s3c2443 pull resistors 153 * s3c2443_gpio_getpull() - Get configuration for s3c2443 pull resistors
241 * @chip: The gpio chip that the GPIO pin belongs to. 154 * @chip: The gpio chip that the GPIO pin belongs to.
242 * @off: The offset to the pin to get the configuration of. 155 * @off: The offset to the pin to get the configuration of.
243 * 156 *
244 * This helper function reads the state of the pull-{up,down} resistor for the 157 * This helper function reads the state of the pull-{up,down} resistor for the
245 * given GPIO in the same case as s3c_gpio_setpull_upown. 158 * given GPIO in the same case as samsung_gpio_setpull_upown.
246*/ 159*/
247extern s3c_gpio_pull_t s3c_gpio_getpull_s3c2443(struct s3c_gpio_chip *chip, 160extern samsung_gpio_pull_t s3c2443_gpio_getpull(struct samsung_gpio_chip *chip,
248 unsigned int off); 161 unsigned int off);
249 162
250#endif /* __PLAT_GPIO_CFG_HELPERS_H */ 163#endif /* __PLAT_GPIO_CFG_HELPERS_H */
251