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-rw-r--r--arch/x86/mach-rdc321x/Makefile5
-rw-r--r--arch/x86/mach-rdc321x/gpio.c194
-rw-r--r--arch/x86/mach-rdc321x/platform.c69
3 files changed, 0 insertions, 268 deletions
diff --git a/arch/x86/mach-rdc321x/Makefile b/arch/x86/mach-rdc321x/Makefile
deleted file mode 100644
index 8325b4ca431c..000000000000
--- a/arch/x86/mach-rdc321x/Makefile
+++ /dev/null
@@ -1,5 +0,0 @@
1#
2# Makefile for the RDC321x specific parts of the kernel
3#
4obj-$(CONFIG_X86_RDC321X) := gpio.o platform.o
5
diff --git a/arch/x86/mach-rdc321x/gpio.c b/arch/x86/mach-rdc321x/gpio.c
deleted file mode 100644
index 247f33d3a407..000000000000
--- a/arch/x86/mach-rdc321x/gpio.c
+++ /dev/null
@@ -1,194 +0,0 @@
1/*
2 * GPIO support for RDC SoC R3210/R8610
3 *
4 * Copyright (C) 2007, Florian Fainelli <florian@openwrt.org>
5 * Copyright (C) 2008, Volker Weiss <dev@tintuc.de>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 *
21 */
22
23
24#include <linux/spinlock.h>
25#include <linux/io.h>
26#include <linux/types.h>
27#include <linux/module.h>
28
29#include <asm/gpio.h>
30#include <asm/mach-rdc321x/rdc321x_defs.h>
31
32
33/* spin lock to protect our private copy of GPIO data register plus
34 the access to PCI conf registers. */
35static DEFINE_SPINLOCK(gpio_lock);
36
37/* copy of GPIO data registers */
38static u32 gpio_data_reg1;
39static u32 gpio_data_reg2;
40
41static u32 gpio_request_data[2];
42
43
44static inline void rdc321x_conf_write(unsigned addr, u32 value)
45{
46 outl((1 << 31) | (7 << 11) | addr, RDC3210_CFGREG_ADDR);
47 outl(value, RDC3210_CFGREG_DATA);
48}
49
50static inline void rdc321x_conf_or(unsigned addr, u32 value)
51{
52 outl((1 << 31) | (7 << 11) | addr, RDC3210_CFGREG_ADDR);
53 value |= inl(RDC3210_CFGREG_DATA);
54 outl(value, RDC3210_CFGREG_DATA);
55}
56
57static inline u32 rdc321x_conf_read(unsigned addr)
58{
59 outl((1 << 31) | (7 << 11) | addr, RDC3210_CFGREG_ADDR);
60
61 return inl(RDC3210_CFGREG_DATA);
62}
63
64/* configure pin as GPIO */
65static void rdc321x_configure_gpio(unsigned gpio)
66{
67 unsigned long flags;
68
69 spin_lock_irqsave(&gpio_lock, flags);
70 rdc321x_conf_or(gpio < 32
71 ? RDC321X_GPIO_CTRL_REG1 : RDC321X_GPIO_CTRL_REG2,
72 1 << (gpio & 0x1f));
73 spin_unlock_irqrestore(&gpio_lock, flags);
74}
75
76/* initially setup the 2 copies of the gpio data registers.
77 This function must be called by the platform setup code. */
78void __init rdc321x_gpio_setup()
79{
80 /* this might not be, what others (BIOS, bootloader, etc.)
81 wrote to these registers before, but it's a good guess. Still
82 better than just using 0xffffffff. */
83
84 gpio_data_reg1 = rdc321x_conf_read(RDC321X_GPIO_DATA_REG1);
85 gpio_data_reg2 = rdc321x_conf_read(RDC321X_GPIO_DATA_REG2);
86}
87
88/* determine, if gpio number is valid */
89static inline int rdc321x_is_gpio(unsigned gpio)
90{
91 return gpio <= RDC321X_MAX_GPIO;
92}
93
94/* request GPIO */
95int rdc_gpio_request(unsigned gpio, const char *label)
96{
97 unsigned long flags;
98
99 if (!rdc321x_is_gpio(gpio))
100 return -EINVAL;
101
102 spin_lock_irqsave(&gpio_lock, flags);
103 if (gpio_request_data[(gpio & 0x20) ? 1 : 0] & (1 << (gpio & 0x1f)))
104 goto inuse;
105 gpio_request_data[(gpio & 0x20) ? 1 : 0] |= (1 << (gpio & 0x1f));
106 spin_unlock_irqrestore(&gpio_lock, flags);
107
108 return 0;
109inuse:
110 spin_unlock_irqrestore(&gpio_lock, flags);
111 return -EINVAL;
112}
113EXPORT_SYMBOL(rdc_gpio_request);
114
115/* release previously-claimed GPIO */
116void rdc_gpio_free(unsigned gpio)
117{
118 unsigned long flags;
119
120 if (!rdc321x_is_gpio(gpio))
121 return;
122
123 spin_lock_irqsave(&gpio_lock, flags);
124 gpio_request_data[(gpio & 0x20) ? 1 : 0] &= ~(1 << (gpio & 0x1f));
125 spin_unlock_irqrestore(&gpio_lock, flags);
126}
127EXPORT_SYMBOL(rdc_gpio_free);
128
129/* read GPIO pin */
130int rdc_gpio_get_value(unsigned gpio)
131{
132 u32 reg;
133 unsigned long flags;
134
135 spin_lock_irqsave(&gpio_lock, flags);
136 reg = rdc321x_conf_read(gpio < 32
137 ? RDC321X_GPIO_DATA_REG1 : RDC321X_GPIO_DATA_REG2);
138 spin_unlock_irqrestore(&gpio_lock, flags);
139
140 return (1 << (gpio & 0x1f)) & reg ? 1 : 0;
141}
142EXPORT_SYMBOL(rdc_gpio_get_value);
143
144/* set GPIO pin to value */
145void rdc_gpio_set_value(unsigned gpio, int value)
146{
147 unsigned long flags;
148 u32 reg;
149
150 reg = 1 << (gpio & 0x1f);
151 if (gpio < 32) {
152 spin_lock_irqsave(&gpio_lock, flags);
153 if (value)
154 gpio_data_reg1 |= reg;
155 else
156 gpio_data_reg1 &= ~reg;
157 rdc321x_conf_write(RDC321X_GPIO_DATA_REG1, gpio_data_reg1);
158 spin_unlock_irqrestore(&gpio_lock, flags);
159 } else {
160 spin_lock_irqsave(&gpio_lock, flags);
161 if (value)
162 gpio_data_reg2 |= reg;
163 else
164 gpio_data_reg2 &= ~reg;
165 rdc321x_conf_write(RDC321X_GPIO_DATA_REG2, gpio_data_reg2);
166 spin_unlock_irqrestore(&gpio_lock, flags);
167 }
168}
169EXPORT_SYMBOL(rdc_gpio_set_value);
170
171/* configure GPIO pin as input */
172int rdc_gpio_direction_input(unsigned gpio)
173{
174 if (!rdc321x_is_gpio(gpio))
175 return -EINVAL;
176
177 rdc321x_configure_gpio(gpio);
178
179 return 0;
180}
181EXPORT_SYMBOL(rdc_gpio_direction_input);
182
183/* configure GPIO pin as output and set value */
184int rdc_gpio_direction_output(unsigned gpio, int value)
185{
186 if (!rdc321x_is_gpio(gpio))
187 return -EINVAL;
188
189 gpio_set_value(gpio, value);
190 rdc321x_configure_gpio(gpio);
191
192 return 0;
193}
194EXPORT_SYMBOL(rdc_gpio_direction_output);
diff --git a/arch/x86/mach-rdc321x/platform.c b/arch/x86/mach-rdc321x/platform.c
deleted file mode 100644
index 4f4e50c3ad3b..000000000000
--- a/arch/x86/mach-rdc321x/platform.c
+++ /dev/null
@@ -1,69 +0,0 @@
1/*
2 * Generic RDC321x platform devices
3 *
4 * Copyright (C) 2007 Florian Fainelli <florian@openwrt.org>
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the
18 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
20 *
21 */
22
23#include <linux/init.h>
24#include <linux/kernel.h>
25#include <linux/list.h>
26#include <linux/device.h>
27#include <linux/platform_device.h>
28#include <linux/leds.h>
29
30#include <asm/gpio.h>
31
32/* LEDS */
33static struct gpio_led default_leds[] = {
34 { .name = "rdc:dmz", .gpio = 1, },
35};
36
37static struct gpio_led_platform_data rdc321x_led_data = {
38 .num_leds = ARRAY_SIZE(default_leds),
39 .leds = default_leds,
40};
41
42static struct platform_device rdc321x_leds = {
43 .name = "leds-gpio",
44 .id = -1,
45 .dev = {
46 .platform_data = &rdc321x_led_data,
47 }
48};
49
50/* Watchdog */
51static struct platform_device rdc321x_wdt = {
52 .name = "rdc321x-wdt",
53 .id = -1,
54 .num_resources = 0,
55};
56
57static struct platform_device *rdc321x_devs[] = {
58 &rdc321x_leds,
59 &rdc321x_wdt
60};
61
62static int __init rdc_board_setup(void)
63{
64 rdc321x_gpio_setup();
65
66 return platform_add_devices(rdc321x_devs, ARRAY_SIZE(rdc321x_devs));
67}
68
69arch_initcall(rdc_board_setup);
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-23 14:56:04 -0500