ALSA: hda - Fix missing stream for second ADC on Realtek ALC260 HDA codec
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / rtc / rtc-rp5c01.c
bloba95f733bb15aa5aa1c8cc6af6ad49e33292b196a
1 /*
2 * Ricoh RP5C01 RTC Driver
4 * Copyright 2009 Geert Uytterhoeven
6 * Based on the A3000 TOD code in arch/m68k/amiga/config.c
7 * Copyright (C) 1993 Hamish Macdonald
8 */
10 #include <linux/io.h>
11 #include <linux/kernel.h>
12 #include <linux/module.h>
13 #include <linux/platform_device.h>
14 #include <linux/rtc.h>
15 #include <linux/slab.h>
18 enum {
19 RP5C01_1_SECOND = 0x0, /* MODE 00 */
20 RP5C01_10_SECOND = 0x1, /* MODE 00 */
21 RP5C01_1_MINUTE = 0x2, /* MODE 00 and MODE 01 */
22 RP5C01_10_MINUTE = 0x3, /* MODE 00 and MODE 01 */
23 RP5C01_1_HOUR = 0x4, /* MODE 00 and MODE 01 */
24 RP5C01_10_HOUR = 0x5, /* MODE 00 and MODE 01 */
25 RP5C01_DAY_OF_WEEK = 0x6, /* MODE 00 and MODE 01 */
26 RP5C01_1_DAY = 0x7, /* MODE 00 and MODE 01 */
27 RP5C01_10_DAY = 0x8, /* MODE 00 and MODE 01 */
28 RP5C01_1_MONTH = 0x9, /* MODE 00 */
29 RP5C01_10_MONTH = 0xa, /* MODE 00 */
30 RP5C01_1_YEAR = 0xb, /* MODE 00 */
31 RP5C01_10_YEAR = 0xc, /* MODE 00 */
33 RP5C01_12_24_SELECT = 0xa, /* MODE 01 */
34 RP5C01_LEAP_YEAR = 0xb, /* MODE 01 */
36 RP5C01_MODE = 0xd, /* all modes */
37 RP5C01_TEST = 0xe, /* all modes */
38 RP5C01_RESET = 0xf, /* all modes */
41 #define RP5C01_12_24_SELECT_12 (0 << 0)
42 #define RP5C01_12_24_SELECT_24 (1 << 0)
44 #define RP5C01_10_HOUR_AM (0 << 1)
45 #define RP5C01_10_HOUR_PM (1 << 1)
47 #define RP5C01_MODE_TIMER_EN (1 << 3) /* timer enable */
48 #define RP5C01_MODE_ALARM_EN (1 << 2) /* alarm enable */
50 #define RP5C01_MODE_MODE_MASK (3 << 0)
51 #define RP5C01_MODE_MODE00 (0 << 0) /* time */
52 #define RP5C01_MODE_MODE01 (1 << 0) /* alarm, 12h/24h, leap year */
53 #define RP5C01_MODE_RAM_BLOCK10 (2 << 0) /* RAM 4 bits x 13 */
54 #define RP5C01_MODE_RAM_BLOCK11 (3 << 0) /* RAM 4 bits x 13 */
56 #define RP5C01_RESET_1HZ_PULSE (1 << 3)
57 #define RP5C01_RESET_16HZ_PULSE (1 << 2)
58 #define RP5C01_RESET_SECOND (1 << 1) /* reset divider stages for */
59 /* seconds or smaller units */
60 #define RP5C01_RESET_ALARM (1 << 0) /* reset all alarm registers */
63 struct rp5c01_priv {
64 u32 __iomem *regs;
65 struct rtc_device *rtc;
68 static inline unsigned int rp5c01_read(struct rp5c01_priv *priv,
69 unsigned int reg)
71 return __raw_readl(&priv->regs[reg]) & 0xf;
74 static inline void rp5c01_write(struct rp5c01_priv *priv, unsigned int val,
75 unsigned int reg)
77 return __raw_writel(val, &priv->regs[reg]);
80 static void rp5c01_lock(struct rp5c01_priv *priv)
82 rp5c01_write(priv, RP5C01_MODE_MODE00, RP5C01_MODE);
85 static void rp5c01_unlock(struct rp5c01_priv *priv)
87 rp5c01_write(priv, RP5C01_MODE_TIMER_EN | RP5C01_MODE_MODE01,
88 RP5C01_MODE);
91 static int rp5c01_read_time(struct device *dev, struct rtc_time *tm)
93 struct rp5c01_priv *priv = dev_get_drvdata(dev);
95 rp5c01_lock(priv);
97 tm->tm_sec = rp5c01_read(priv, RP5C01_10_SECOND) * 10 +
98 rp5c01_read(priv, RP5C01_1_SECOND);
99 tm->tm_min = rp5c01_read(priv, RP5C01_10_MINUTE) * 10 +
100 rp5c01_read(priv, RP5C01_1_MINUTE);
101 tm->tm_hour = rp5c01_read(priv, RP5C01_10_HOUR) * 10 +
102 rp5c01_read(priv, RP5C01_1_HOUR);
103 tm->tm_mday = rp5c01_read(priv, RP5C01_10_DAY) * 10 +
104 rp5c01_read(priv, RP5C01_1_DAY);
105 tm->tm_wday = rp5c01_read(priv, RP5C01_DAY_OF_WEEK);
106 tm->tm_mon = rp5c01_read(priv, RP5C01_10_MONTH) * 10 +
107 rp5c01_read(priv, RP5C01_1_MONTH) - 1;
108 tm->tm_year = rp5c01_read(priv, RP5C01_10_YEAR) * 10 +
109 rp5c01_read(priv, RP5C01_1_YEAR);
110 if (tm->tm_year <= 69)
111 tm->tm_year += 100;
113 rp5c01_unlock(priv);
115 return rtc_valid_tm(tm);
118 static int rp5c01_set_time(struct device *dev, struct rtc_time *tm)
120 struct rp5c01_priv *priv = dev_get_drvdata(dev);
122 rp5c01_lock(priv);
124 rp5c01_write(priv, tm->tm_sec / 10, RP5C01_10_SECOND);
125 rp5c01_write(priv, tm->tm_sec % 10, RP5C01_1_SECOND);
126 rp5c01_write(priv, tm->tm_min / 10, RP5C01_10_MINUTE);
127 rp5c01_write(priv, tm->tm_min % 10, RP5C01_1_MINUTE);
128 rp5c01_write(priv, tm->tm_hour / 10, RP5C01_10_HOUR);
129 rp5c01_write(priv, tm->tm_hour % 10, RP5C01_1_HOUR);
130 rp5c01_write(priv, tm->tm_mday / 10, RP5C01_10_DAY);
131 rp5c01_write(priv, tm->tm_mday % 10, RP5C01_1_DAY);
132 if (tm->tm_wday != -1)
133 rp5c01_write(priv, tm->tm_wday, RP5C01_DAY_OF_WEEK);
134 rp5c01_write(priv, (tm->tm_mon + 1) / 10, RP5C01_10_MONTH);
135 rp5c01_write(priv, (tm->tm_mon + 1) % 10, RP5C01_1_MONTH);
136 if (tm->tm_year >= 100)
137 tm->tm_year -= 100;
138 rp5c01_write(priv, tm->tm_year / 10, RP5C01_10_YEAR);
139 rp5c01_write(priv, tm->tm_year % 10, RP5C01_1_YEAR);
141 rp5c01_unlock(priv);
142 return 0;
145 static const struct rtc_class_ops rp5c01_rtc_ops = {
146 .read_time = rp5c01_read_time,
147 .set_time = rp5c01_set_time,
150 static int __init rp5c01_rtc_probe(struct platform_device *dev)
152 struct resource *res;
153 struct rp5c01_priv *priv;
154 struct rtc_device *rtc;
155 int error;
157 res = platform_get_resource(dev, IORESOURCE_MEM, 0);
158 if (!res)
159 return -ENODEV;
161 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
162 if (!priv)
163 return -ENOMEM;
165 priv->regs = ioremap(res->start, resource_size(res));
166 if (!priv->regs) {
167 error = -ENOMEM;
168 goto out_free_priv;
171 rtc = rtc_device_register("rtc-rp5c01", &dev->dev, &rp5c01_rtc_ops,
172 THIS_MODULE);
173 if (IS_ERR(rtc)) {
174 error = PTR_ERR(rtc);
175 goto out_unmap;
178 priv->rtc = rtc;
179 platform_set_drvdata(dev, priv);
180 return 0;
182 out_unmap:
183 iounmap(priv->regs);
184 out_free_priv:
185 kfree(priv);
186 return error;
189 static int __exit rp5c01_rtc_remove(struct platform_device *dev)
191 struct rp5c01_priv *priv = platform_get_drvdata(dev);
193 rtc_device_unregister(priv->rtc);
194 iounmap(priv->regs);
195 kfree(priv);
196 return 0;
199 static struct platform_driver rp5c01_rtc_driver = {
200 .driver = {
201 .name = "rtc-rp5c01",
202 .owner = THIS_MODULE,
204 .remove = __exit_p(rp5c01_rtc_remove),
207 static int __init rp5c01_rtc_init(void)
209 return platform_driver_probe(&rp5c01_rtc_driver, rp5c01_rtc_probe);
212 static void __exit rp5c01_rtc_fini(void)
214 platform_driver_unregister(&rp5c01_rtc_driver);
217 module_init(rp5c01_rtc_init);
218 module_exit(rp5c01_rtc_fini);
220 MODULE_AUTHOR("Geert Uytterhoeven <geert@linux-m68k.org>");
221 MODULE_LICENSE("GPL");
222 MODULE_DESCRIPTION("Ricoh RP5C01 RTC driver");
223 MODULE_ALIAS("platform:rtc-rp5c01");