diff options
Diffstat (limited to 'drivers/rtc')
-rw-r--r-- | drivers/rtc/Kconfig | 19 | ||||
-rw-r--r-- | drivers/rtc/Makefile | 2 | ||||
-rw-r--r-- | drivers/rtc/interface.c | 102 | ||||
-rw-r--r-- | drivers/rtc/rtc-at32ap700x.c | 7 | ||||
-rw-r--r-- | drivers/rtc/rtc-cmos.c | 31 | ||||
-rw-r--r-- | drivers/rtc/rtc-ds1374.c | 2 | ||||
-rw-r--r-- | drivers/rtc/rtc-fm3130.c | 501 | ||||
-rw-r--r-- | drivers/rtc/rtc-ppc.c | 69 | ||||
-rw-r--r-- | drivers/rtc/rtc-sa1100.c | 4 | ||||
-rw-r--r-- | drivers/rtc/rtc-x1205.c | 111 |
10 files changed, 797 insertions, 51 deletions
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig index 6cc2c0330230..4949dc4859be 100644 --- a/drivers/rtc/Kconfig +++ b/drivers/rtc/Kconfig | |||
@@ -256,6 +256,17 @@ config RTC_DRV_S35390A | |||
256 | This driver can also be built as a module. If so the module | 256 | This driver can also be built as a module. If so the module |
257 | will be called rtc-s35390a. | 257 | will be called rtc-s35390a. |
258 | 258 | ||
259 | config RTC_DRV_FM3130 | ||
260 | tristate "Ramtron FM3130" | ||
261 | help | ||
262 | If you say Y here you will get support for the | ||
263 | Ramtron FM3130 RTC chips. | ||
264 | Ramtron FM3130 is a chip with two separate devices inside, | ||
265 | RTC clock and FRAM. This driver provides only RTC functionality. | ||
266 | |||
267 | This driver can also be built as a module. If so the module | ||
268 | will be called rtc-fm3130. | ||
269 | |||
259 | endif # I2C | 270 | endif # I2C |
260 | 271 | ||
261 | comment "SPI RTC drivers" | 272 | comment "SPI RTC drivers" |
@@ -534,4 +545,12 @@ config RTC_DRV_RS5C313 | |||
534 | help | 545 | help |
535 | If you say yes here you get support for the Ricoh RS5C313 RTC chips. | 546 | If you say yes here you get support for the Ricoh RS5C313 RTC chips. |
536 | 547 | ||
548 | config RTC_DRV_PPC | ||
549 | tristate "PowerPC machine dependent RTC support" | ||
550 | depends on PPC_MERGE | ||
551 | help | ||
552 | The PowerPC kernel has machine-specific functions for accessing | ||
553 | the RTC. This exposes that functionality through the generic RTC | ||
554 | class. | ||
555 | |||
537 | endif # RTC_CLASS | 556 | endif # RTC_CLASS |
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile index 872f1218ff9f..b6e14d51670b 100644 --- a/drivers/rtc/Makefile +++ b/drivers/rtc/Makefile | |||
@@ -31,6 +31,7 @@ obj-$(CONFIG_RTC_DRV_DS1553) += rtc-ds1553.o | |||
31 | obj-$(CONFIG_RTC_DRV_DS1672) += rtc-ds1672.o | 31 | obj-$(CONFIG_RTC_DRV_DS1672) += rtc-ds1672.o |
32 | obj-$(CONFIG_RTC_DRV_DS1742) += rtc-ds1742.o | 32 | obj-$(CONFIG_RTC_DRV_DS1742) += rtc-ds1742.o |
33 | obj-$(CONFIG_RTC_DRV_EP93XX) += rtc-ep93xx.o | 33 | obj-$(CONFIG_RTC_DRV_EP93XX) += rtc-ep93xx.o |
34 | obj-$(CONFIG_RTC_DRV_FM3130) += rtc-fm3130.o | ||
34 | obj-$(CONFIG_RTC_DRV_ISL1208) += rtc-isl1208.o | 35 | obj-$(CONFIG_RTC_DRV_ISL1208) += rtc-isl1208.o |
35 | obj-$(CONFIG_RTC_DRV_M41T80) += rtc-m41t80.o | 36 | obj-$(CONFIG_RTC_DRV_M41T80) += rtc-m41t80.o |
36 | obj-$(CONFIG_RTC_DRV_M48T59) += rtc-m48t59.o | 37 | obj-$(CONFIG_RTC_DRV_M48T59) += rtc-m48t59.o |
@@ -41,6 +42,7 @@ obj-$(CONFIG_RTC_DRV_OMAP) += rtc-omap.o | |||
41 | obj-$(CONFIG_RTC_DRV_PCF8563) += rtc-pcf8563.o | 42 | obj-$(CONFIG_RTC_DRV_PCF8563) += rtc-pcf8563.o |
42 | obj-$(CONFIG_RTC_DRV_PCF8583) += rtc-pcf8583.o | 43 | obj-$(CONFIG_RTC_DRV_PCF8583) += rtc-pcf8583.o |
43 | obj-$(CONFIG_RTC_DRV_PL031) += rtc-pl031.o | 44 | obj-$(CONFIG_RTC_DRV_PL031) += rtc-pl031.o |
45 | obj-$(CONFIG_RTC_DRV_PPC) += rtc-ppc.o | ||
44 | obj-$(CONFIG_RTC_DRV_R9701) += rtc-r9701.o | 46 | obj-$(CONFIG_RTC_DRV_R9701) += rtc-r9701.o |
45 | obj-$(CONFIG_RTC_DRV_RS5C313) += rtc-rs5c313.o | 47 | obj-$(CONFIG_RTC_DRV_RS5C313) += rtc-rs5c313.o |
46 | obj-$(CONFIG_RTC_DRV_RS5C348) += rtc-rs5c348.o | 48 | obj-$(CONFIG_RTC_DRV_RS5C348) += rtc-rs5c348.o |
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c index 7e3ad4f3b343..58b7336640ff 100644 --- a/drivers/rtc/interface.c +++ b/drivers/rtc/interface.c | |||
@@ -126,12 +126,25 @@ int rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm) | |||
126 | int err; | 126 | int err; |
127 | struct rtc_time before, now; | 127 | struct rtc_time before, now; |
128 | int first_time = 1; | 128 | int first_time = 1; |
129 | unsigned long t_now, t_alm; | ||
130 | enum { none, day, month, year } missing = none; | ||
131 | unsigned days; | ||
129 | 132 | ||
130 | /* The lower level RTC driver may not be capable of filling | 133 | /* The lower level RTC driver may return -1 in some fields, |
131 | * in all fields of the rtc_time struct (eg. rtc-cmos), | 134 | * creating invalid alarm->time values, for reasons like: |
132 | * and so might instead return -1 in some fields. | 135 | * |
133 | * We deal with that here by grabbing a current RTC timestamp | 136 | * - The hardware may not be capable of filling them in; |
134 | * and using values from that for any missing (-1) values. | 137 | * many alarms match only on time-of-day fields, not |
138 | * day/month/year calendar data. | ||
139 | * | ||
140 | * - Some hardware uses illegal values as "wildcard" match | ||
141 | * values, which non-Linux firmware (like a BIOS) may try | ||
142 | * to set up as e.g. "alarm 15 minutes after each hour". | ||
143 | * Linux uses only oneshot alarms. | ||
144 | * | ||
145 | * When we see that here, we deal with it by using values from | ||
146 | * a current RTC timestamp for any missing (-1) values. The | ||
147 | * RTC driver prevents "periodic alarm" modes. | ||
135 | * | 148 | * |
136 | * But this can be racey, because some fields of the RTC timestamp | 149 | * But this can be racey, because some fields of the RTC timestamp |
137 | * may have wrapped in the interval since we read the RTC alarm, | 150 | * may have wrapped in the interval since we read the RTC alarm, |
@@ -174,6 +187,10 @@ int rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm) | |||
174 | if (!alarm->enabled) | 187 | if (!alarm->enabled) |
175 | return 0; | 188 | return 0; |
176 | 189 | ||
190 | /* full-function RTCs won't have such missing fields */ | ||
191 | if (rtc_valid_tm(&alarm->time) == 0) | ||
192 | return 0; | ||
193 | |||
177 | /* get the "after" timestamp, to detect wrapped fields */ | 194 | /* get the "after" timestamp, to detect wrapped fields */ |
178 | err = rtc_read_time(rtc, &now); | 195 | err = rtc_read_time(rtc, &now); |
179 | if (err < 0) | 196 | if (err < 0) |
@@ -183,22 +200,85 @@ int rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm) | |||
183 | } while ( before.tm_min != now.tm_min | 200 | } while ( before.tm_min != now.tm_min |
184 | || before.tm_hour != now.tm_hour | 201 | || before.tm_hour != now.tm_hour |
185 | || before.tm_mon != now.tm_mon | 202 | || before.tm_mon != now.tm_mon |
186 | || before.tm_year != now.tm_year | 203 | || before.tm_year != now.tm_year); |
187 | || before.tm_isdst != now.tm_isdst); | ||
188 | 204 | ||
189 | /* Fill in any missing alarm fields using the timestamp */ | 205 | /* Fill in the missing alarm fields using the timestamp; we |
206 | * know there's at least one since alarm->time is invalid. | ||
207 | */ | ||
190 | if (alarm->time.tm_sec == -1) | 208 | if (alarm->time.tm_sec == -1) |
191 | alarm->time.tm_sec = now.tm_sec; | 209 | alarm->time.tm_sec = now.tm_sec; |
192 | if (alarm->time.tm_min == -1) | 210 | if (alarm->time.tm_min == -1) |
193 | alarm->time.tm_min = now.tm_min; | 211 | alarm->time.tm_min = now.tm_min; |
194 | if (alarm->time.tm_hour == -1) | 212 | if (alarm->time.tm_hour == -1) |
195 | alarm->time.tm_hour = now.tm_hour; | 213 | alarm->time.tm_hour = now.tm_hour; |
196 | if (alarm->time.tm_mday == -1) | 214 | |
215 | /* For simplicity, only support date rollover for now */ | ||
216 | if (alarm->time.tm_mday == -1) { | ||
197 | alarm->time.tm_mday = now.tm_mday; | 217 | alarm->time.tm_mday = now.tm_mday; |
198 | if (alarm->time.tm_mon == -1) | 218 | missing = day; |
219 | } | ||
220 | if (alarm->time.tm_mon == -1) { | ||
199 | alarm->time.tm_mon = now.tm_mon; | 221 | alarm->time.tm_mon = now.tm_mon; |
200 | if (alarm->time.tm_year == -1) | 222 | if (missing == none) |
223 | missing = month; | ||
224 | } | ||
225 | if (alarm->time.tm_year == -1) { | ||
201 | alarm->time.tm_year = now.tm_year; | 226 | alarm->time.tm_year = now.tm_year; |
227 | if (missing == none) | ||
228 | missing = year; | ||
229 | } | ||
230 | |||
231 | /* with luck, no rollover is needed */ | ||
232 | rtc_tm_to_time(&now, &t_now); | ||
233 | rtc_tm_to_time(&alarm->time, &t_alm); | ||
234 | if (t_now < t_alm) | ||
235 | goto done; | ||
236 | |||
237 | switch (missing) { | ||
238 | |||
239 | /* 24 hour rollover ... if it's now 10am Monday, an alarm that | ||
240 | * that will trigger at 5am will do so at 5am Tuesday, which | ||
241 | * could also be in the next month or year. This is a common | ||
242 | * case, especially for PCs. | ||
243 | */ | ||
244 | case day: | ||
245 | dev_dbg(&rtc->dev, "alarm rollover: %s\n", "day"); | ||
246 | t_alm += 24 * 60 * 60; | ||
247 | rtc_time_to_tm(t_alm, &alarm->time); | ||
248 | break; | ||
249 | |||
250 | /* Month rollover ... if it's the 31th, an alarm on the 3rd will | ||
251 | * be next month. An alarm matching on the 30th, 29th, or 28th | ||
252 | * may end up in the month after that! Many newer PCs support | ||
253 | * this type of alarm. | ||
254 | */ | ||
255 | case month: | ||
256 | dev_dbg(&rtc->dev, "alarm rollover: %s\n", "month"); | ||
257 | do { | ||
258 | if (alarm->time.tm_mon < 11) | ||
259 | alarm->time.tm_mon++; | ||
260 | else { | ||
261 | alarm->time.tm_mon = 0; | ||
262 | alarm->time.tm_year++; | ||
263 | } | ||
264 | days = rtc_month_days(alarm->time.tm_mon, | ||
265 | alarm->time.tm_year); | ||
266 | } while (days < alarm->time.tm_mday); | ||
267 | break; | ||
268 | |||
269 | /* Year rollover ... easy except for leap years! */ | ||
270 | case year: | ||
271 | dev_dbg(&rtc->dev, "alarm rollover: %s\n", "year"); | ||
272 | do { | ||
273 | alarm->time.tm_year++; | ||
274 | } while (!rtc_valid_tm(&alarm->time)); | ||
275 | break; | ||
276 | |||
277 | default: | ||
278 | dev_warn(&rtc->dev, "alarm rollover not handled\n"); | ||
279 | } | ||
280 | |||
281 | done: | ||
202 | return 0; | 282 | return 0; |
203 | } | 283 | } |
204 | EXPORT_SYMBOL_GPL(rtc_read_alarm); | 284 | EXPORT_SYMBOL_GPL(rtc_read_alarm); |
diff --git a/drivers/rtc/rtc-at32ap700x.c b/drivers/rtc/rtc-at32ap700x.c index 42244f14b41c..2ef8cdfda4a7 100644 --- a/drivers/rtc/rtc-at32ap700x.c +++ b/drivers/rtc/rtc-at32ap700x.c | |||
@@ -94,8 +94,11 @@ static int at32_rtc_readalarm(struct device *dev, struct rtc_wkalrm *alrm) | |||
94 | { | 94 | { |
95 | struct rtc_at32ap700x *rtc = dev_get_drvdata(dev); | 95 | struct rtc_at32ap700x *rtc = dev_get_drvdata(dev); |
96 | 96 | ||
97 | spin_lock_irq(&rtc->lock); | ||
97 | rtc_time_to_tm(rtc->alarm_time, &alrm->time); | 98 | rtc_time_to_tm(rtc->alarm_time, &alrm->time); |
98 | alrm->pending = rtc_readl(rtc, IMR) & RTC_BIT(IMR_TOPI) ? 1 : 0; | 99 | alrm->enabled = rtc_readl(rtc, IMR) & RTC_BIT(IMR_TOPI) ? 1 : 0; |
100 | alrm->pending = rtc_readl(rtc, ISR) & RTC_BIT(ISR_TOPI) ? 1 : 0; | ||
101 | spin_unlock_irq(&rtc->lock); | ||
99 | 102 | ||
100 | return 0; | 103 | return 0; |
101 | } | 104 | } |
@@ -119,7 +122,7 @@ static int at32_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm) | |||
119 | spin_lock_irq(&rtc->lock); | 122 | spin_lock_irq(&rtc->lock); |
120 | rtc->alarm_time = alarm_unix_time; | 123 | rtc->alarm_time = alarm_unix_time; |
121 | rtc_writel(rtc, TOP, rtc->alarm_time); | 124 | rtc_writel(rtc, TOP, rtc->alarm_time); |
122 | if (alrm->pending) | 125 | if (alrm->enabled) |
123 | rtc_writel(rtc, CTRL, rtc_readl(rtc, CTRL) | 126 | rtc_writel(rtc, CTRL, rtc_readl(rtc, CTRL) |
124 | | RTC_BIT(CTRL_TOPEN)); | 127 | | RTC_BIT(CTRL_TOPEN)); |
125 | else | 128 | else |
diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c index d060a06ce05b..d7bb9bac71df 100644 --- a/drivers/rtc/rtc-cmos.c +++ b/drivers/rtc/rtc-cmos.c | |||
@@ -905,19 +905,7 @@ static struct pnp_driver cmos_pnp_driver = { | |||
905 | .resume = cmos_pnp_resume, | 905 | .resume = cmos_pnp_resume, |
906 | }; | 906 | }; |
907 | 907 | ||
908 | static int __init cmos_init(void) | 908 | #endif /* CONFIG_PNP */ |
909 | { | ||
910 | return pnp_register_driver(&cmos_pnp_driver); | ||
911 | } | ||
912 | module_init(cmos_init); | ||
913 | |||
914 | static void __exit cmos_exit(void) | ||
915 | { | ||
916 | pnp_unregister_driver(&cmos_pnp_driver); | ||
917 | } | ||
918 | module_exit(cmos_exit); | ||
919 | |||
920 | #else /* no PNP */ | ||
921 | 909 | ||
922 | /*----------------------------------------------------------------*/ | 910 | /*----------------------------------------------------------------*/ |
923 | 911 | ||
@@ -958,20 +946,33 @@ static struct platform_driver cmos_platform_driver = { | |||
958 | 946 | ||
959 | static int __init cmos_init(void) | 947 | static int __init cmos_init(void) |
960 | { | 948 | { |
949 | #ifdef CONFIG_PNP | ||
950 | if (pnp_platform_devices) | ||
951 | return pnp_register_driver(&cmos_pnp_driver); | ||
952 | else | ||
953 | return platform_driver_probe(&cmos_platform_driver, | ||
954 | cmos_platform_probe); | ||
955 | #else | ||
961 | return platform_driver_probe(&cmos_platform_driver, | 956 | return platform_driver_probe(&cmos_platform_driver, |
962 | cmos_platform_probe); | 957 | cmos_platform_probe); |
958 | #endif /* CONFIG_PNP */ | ||
963 | } | 959 | } |
964 | module_init(cmos_init); | 960 | module_init(cmos_init); |
965 | 961 | ||
966 | static void __exit cmos_exit(void) | 962 | static void __exit cmos_exit(void) |
967 | { | 963 | { |
964 | #ifdef CONFIG_PNP | ||
965 | if (pnp_platform_devices) | ||
966 | pnp_unregister_driver(&cmos_pnp_driver); | ||
967 | else | ||
968 | platform_driver_unregister(&cmos_platform_driver); | ||
969 | #else | ||
968 | platform_driver_unregister(&cmos_platform_driver); | 970 | platform_driver_unregister(&cmos_platform_driver); |
971 | #endif /* CONFIG_PNP */ | ||
969 | } | 972 | } |
970 | module_exit(cmos_exit); | 973 | module_exit(cmos_exit); |
971 | 974 | ||
972 | 975 | ||
973 | #endif /* !PNP */ | ||
974 | |||
975 | MODULE_AUTHOR("David Brownell"); | 976 | MODULE_AUTHOR("David Brownell"); |
976 | MODULE_DESCRIPTION("Driver for PC-style 'CMOS' RTCs"); | 977 | MODULE_DESCRIPTION("Driver for PC-style 'CMOS' RTCs"); |
977 | MODULE_LICENSE("GPL"); | 978 | MODULE_LICENSE("GPL"); |
diff --git a/drivers/rtc/rtc-ds1374.c b/drivers/rtc/rtc-ds1374.c index fa2d2f8b3f4d..640acd20fdde 100644 --- a/drivers/rtc/rtc-ds1374.c +++ b/drivers/rtc/rtc-ds1374.c | |||
@@ -42,7 +42,7 @@ | |||
42 | #define DS1374_REG_TCR 0x09 /* Trickle Charge */ | 42 | #define DS1374_REG_TCR 0x09 /* Trickle Charge */ |
43 | 43 | ||
44 | static const struct i2c_device_id ds1374_id[] = { | 44 | static const struct i2c_device_id ds1374_id[] = { |
45 | { "rtc-ds1374", 0 }, | 45 | { "ds1374", 0 }, |
46 | { } | 46 | { } |
47 | }; | 47 | }; |
48 | MODULE_DEVICE_TABLE(i2c, ds1374_id); | 48 | MODULE_DEVICE_TABLE(i2c, ds1374_id); |
diff --git a/drivers/rtc/rtc-fm3130.c b/drivers/rtc/rtc-fm3130.c new file mode 100644 index 000000000000..11644c8fca82 --- /dev/null +++ b/drivers/rtc/rtc-fm3130.c | |||
@@ -0,0 +1,501 @@ | |||
1 | /* | ||
2 | * rtc-fm3130.c - RTC driver for Ramtron FM3130 I2C chip. | ||
3 | * | ||
4 | * Copyright (C) 2008 Sergey Lapin | ||
5 | * Based on ds1307 driver by James Chapman and David Brownell | ||
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 version 2 as | ||
9 | * published by the Free Software Foundation. | ||
10 | */ | ||
11 | |||
12 | #include <linux/module.h> | ||
13 | #include <linux/i2c.h> | ||
14 | #include <linux/rtc.h> | ||
15 | #include <linux/bcd.h> | ||
16 | |||
17 | #define FM3130_RTC_CONTROL (0x0) | ||
18 | #define FM3130_CAL_CONTROL (0x1) | ||
19 | #define FM3130_RTC_SECONDS (0x2) | ||
20 | #define FM3130_RTC_MINUTES (0x3) | ||
21 | #define FM3130_RTC_HOURS (0x4) | ||
22 | #define FM3130_RTC_DAY (0x5) | ||
23 | #define FM3130_RTC_DATE (0x6) | ||
24 | #define FM3130_RTC_MONTHS (0x7) | ||
25 | #define FM3130_RTC_YEARS (0x8) | ||
26 | |||
27 | #define FM3130_ALARM_SECONDS (0x9) | ||
28 | #define FM3130_ALARM_MINUTES (0xa) | ||
29 | #define FM3130_ALARM_HOURS (0xb) | ||
30 | #define FM3130_ALARM_DATE (0xc) | ||
31 | #define FM3130_ALARM_MONTHS (0xd) | ||
32 | #define FM3130_ALARM_WP_CONTROL (0xe) | ||
33 | |||
34 | #define FM3130_CAL_CONTROL_BIT_nOSCEN (1 << 7) /* Osciallator enabled */ | ||
35 | #define FM3130_RTC_CONTROL_BIT_LB (1 << 7) /* Low battery */ | ||
36 | #define FM3130_RTC_CONTROL_BIT_AF (1 << 6) /* Alarm flag */ | ||
37 | #define FM3130_RTC_CONTROL_BIT_CF (1 << 5) /* Century overflow */ | ||
38 | #define FM3130_RTC_CONTROL_BIT_POR (1 << 4) /* Power on reset */ | ||
39 | #define FM3130_RTC_CONTROL_BIT_AEN (1 << 3) /* Alarm enable */ | ||
40 | #define FM3130_RTC_CONTROL_BIT_CAL (1 << 2) /* Calibration mode */ | ||
41 | #define FM3130_RTC_CONTROL_BIT_WRITE (1 << 1) /* W=1 -> write mode W=0 normal */ | ||
42 | #define FM3130_RTC_CONTROL_BIT_READ (1 << 0) /* R=1 -> read mode R=0 normal */ | ||
43 | |||
44 | #define FM3130_CLOCK_REGS 7 | ||
45 | #define FM3130_ALARM_REGS 5 | ||
46 | |||
47 | struct fm3130 { | ||
48 | u8 reg_addr_time; | ||
49 | u8 reg_addr_alarm; | ||
50 | u8 regs[15]; | ||
51 | struct i2c_msg msg[4]; | ||
52 | struct i2c_client *client; | ||
53 | struct rtc_device *rtc; | ||
54 | int data_valid; | ||
55 | int alarm; | ||
56 | }; | ||
57 | static const struct i2c_device_id fm3130_id[] = { | ||
58 | { "fm3130-rtc", 0 }, | ||
59 | { } | ||
60 | }; | ||
61 | MODULE_DEVICE_TABLE(i2c, fm3130_id); | ||
62 | |||
63 | #define FM3130_MODE_NORMAL 0 | ||
64 | #define FM3130_MODE_WRITE 1 | ||
65 | #define FM3130_MODE_READ 2 | ||
66 | |||
67 | static void fm3130_rtc_mode(struct device *dev, int mode) | ||
68 | { | ||
69 | struct fm3130 *fm3130 = dev_get_drvdata(dev); | ||
70 | |||
71 | fm3130->regs[FM3130_RTC_CONTROL] = | ||
72 | i2c_smbus_read_byte_data(fm3130->client, FM3130_RTC_CONTROL); | ||
73 | switch (mode) { | ||
74 | case FM3130_MODE_NORMAL: | ||
75 | fm3130->regs[FM3130_RTC_CONTROL] &= | ||
76 | ~(FM3130_RTC_CONTROL_BIT_WRITE | | ||
77 | FM3130_RTC_CONTROL_BIT_READ); | ||
78 | break; | ||
79 | case FM3130_MODE_WRITE: | ||
80 | fm3130->regs[FM3130_RTC_CONTROL] |= FM3130_RTC_CONTROL_BIT_WRITE; | ||
81 | break; | ||
82 | case FM3130_MODE_READ: | ||
83 | fm3130->regs[FM3130_RTC_CONTROL] |= FM3130_RTC_CONTROL_BIT_READ; | ||
84 | break; | ||
85 | default: | ||
86 | dev_dbg(dev, "invalid mode %d\n", mode); | ||
87 | break; | ||
88 | } | ||
89 | /* Checking for alarm */ | ||
90 | if (fm3130->regs[FM3130_RTC_CONTROL] & FM3130_RTC_CONTROL_BIT_AF) { | ||
91 | fm3130->alarm = 1; | ||
92 | fm3130->regs[FM3130_RTC_CONTROL] &= ~FM3130_RTC_CONTROL_BIT_AF; | ||
93 | } | ||
94 | i2c_smbus_write_byte_data(fm3130->client, | ||
95 | FM3130_RTC_CONTROL, fm3130->regs[FM3130_RTC_CONTROL]); | ||
96 | } | ||
97 | |||
98 | static int fm3130_get_time(struct device *dev, struct rtc_time *t) | ||
99 | { | ||
100 | struct fm3130 *fm3130 = dev_get_drvdata(dev); | ||
101 | int tmp; | ||
102 | |||
103 | if (!fm3130->data_valid) { | ||
104 | /* We have invalid data in RTC, probably due | ||
105 | to battery faults or other problems. Return EIO | ||
106 | for now, it will allow us to set data later insted | ||
107 | of error during probing which disables device */ | ||
108 | return -EIO; | ||
109 | } | ||
110 | fm3130_rtc_mode(dev, FM3130_MODE_READ); | ||
111 | |||
112 | /* read the RTC date and time registers all at once */ | ||
113 | tmp = i2c_transfer(to_i2c_adapter(fm3130->client->dev.parent), | ||
114 | fm3130->msg, 2); | ||
115 | if (tmp != 2) { | ||
116 | dev_err(dev, "%s error %d\n", "read", tmp); | ||
117 | return -EIO; | ||
118 | } | ||
119 | |||
120 | fm3130_rtc_mode(dev, FM3130_MODE_NORMAL); | ||
121 | |||
122 | dev_dbg(dev, "%s: %02x %02x %02x %02x %02x %02x %02x %02x" | ||
123 | "%02x %02x %02x %02x %02x %02x %02x\n", | ||
124 | "read", | ||
125 | fm3130->regs[0], fm3130->regs[1], | ||
126 | fm3130->regs[2], fm3130->regs[3], | ||
127 | fm3130->regs[4], fm3130->regs[5], | ||
128 | fm3130->regs[6], fm3130->regs[7], | ||
129 | fm3130->regs[8], fm3130->regs[9], | ||
130 | fm3130->regs[0xa], fm3130->regs[0xb], | ||
131 | fm3130->regs[0xc], fm3130->regs[0xd], | ||
132 | fm3130->regs[0xe]); | ||
133 | |||
134 | t->tm_sec = BCD2BIN(fm3130->regs[FM3130_RTC_SECONDS] & 0x7f); | ||
135 | t->tm_min = BCD2BIN(fm3130->regs[FM3130_RTC_MINUTES] & 0x7f); | ||
136 | tmp = fm3130->regs[FM3130_RTC_HOURS] & 0x3f; | ||
137 | t->tm_hour = BCD2BIN(tmp); | ||
138 | t->tm_wday = BCD2BIN(fm3130->regs[FM3130_RTC_DAY] & 0x07) - 1; | ||
139 | t->tm_mday = BCD2BIN(fm3130->regs[FM3130_RTC_DATE] & 0x3f); | ||
140 | tmp = fm3130->regs[FM3130_RTC_MONTHS] & 0x1f; | ||
141 | t->tm_mon = BCD2BIN(tmp) - 1; | ||
142 | |||
143 | /* assume 20YY not 19YY, and ignore CF bit */ | ||
144 | t->tm_year = BCD2BIN(fm3130->regs[FM3130_RTC_YEARS]) + 100; | ||
145 | |||
146 | dev_dbg(dev, "%s secs=%d, mins=%d, " | ||
147 | "hours=%d, mday=%d, mon=%d, year=%d, wday=%d\n", | ||
148 | "read", t->tm_sec, t->tm_min, | ||
149 | t->tm_hour, t->tm_mday, | ||
150 | t->tm_mon, t->tm_year, t->tm_wday); | ||
151 | |||
152 | /* initial clock setting can be undefined */ | ||
153 | return rtc_valid_tm(t); | ||
154 | } | ||
155 | |||
156 | |||
157 | static int fm3130_set_time(struct device *dev, struct rtc_time *t) | ||
158 | { | ||
159 | struct fm3130 *fm3130 = dev_get_drvdata(dev); | ||
160 | int tmp, i; | ||
161 | u8 *buf = fm3130->regs; | ||
162 | |||
163 | dev_dbg(dev, "%s secs=%d, mins=%d, " | ||
164 | "hours=%d, mday=%d, mon=%d, year=%d, wday=%d\n", | ||
165 | "write", t->tm_sec, t->tm_min, | ||
166 | t->tm_hour, t->tm_mday, | ||
167 | t->tm_mon, t->tm_year, t->tm_wday); | ||
168 | |||
169 | /* first register addr */ | ||
170 | buf[FM3130_RTC_SECONDS] = BIN2BCD(t->tm_sec); | ||
171 | buf[FM3130_RTC_MINUTES] = BIN2BCD(t->tm_min); | ||
172 | buf[FM3130_RTC_HOURS] = BIN2BCD(t->tm_hour); | ||
173 | buf[FM3130_RTC_DAY] = BIN2BCD(t->tm_wday + 1); | ||
174 | buf[FM3130_RTC_DATE] = BIN2BCD(t->tm_mday); | ||
175 | buf[FM3130_RTC_MONTHS] = BIN2BCD(t->tm_mon + 1); | ||
176 | |||
177 | /* assume 20YY not 19YY */ | ||
178 | tmp = t->tm_year - 100; | ||
179 | buf[FM3130_RTC_YEARS] = BIN2BCD(tmp); | ||
180 | |||
181 | dev_dbg(dev, "%s: %02x %02x %02x %02x %02x %02x %02x" | ||
182 | "%02x %02x %02x %02x %02x %02x %02x %02x\n", | ||
183 | "write", buf[0], buf[1], buf[2], buf[3], | ||
184 | buf[4], buf[5], buf[6], buf[7], | ||
185 | buf[8], buf[9], buf[0xa], buf[0xb], | ||
186 | buf[0xc], buf[0xd], buf[0xe]); | ||
187 | |||
188 | fm3130_rtc_mode(dev, FM3130_MODE_WRITE); | ||
189 | |||
190 | /* Writing time registers, we don't support multibyte transfers */ | ||
191 | for (i = 0; i < FM3130_CLOCK_REGS; i++) { | ||
192 | i2c_smbus_write_byte_data(fm3130->client, | ||
193 | FM3130_RTC_SECONDS + i, | ||
194 | fm3130->regs[FM3130_RTC_SECONDS + i]); | ||
195 | } | ||
196 | |||
197 | fm3130_rtc_mode(dev, FM3130_MODE_NORMAL); | ||
198 | |||
199 | /* We assume here that data are valid once written */ | ||
200 | if (!fm3130->data_valid) | ||
201 | fm3130->data_valid = 1; | ||
202 | return 0; | ||
203 | } | ||
204 | |||
205 | static int fm3130_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) | ||
206 | { | ||
207 | struct fm3130 *fm3130 = dev_get_drvdata(dev); | ||
208 | int tmp; | ||
209 | struct rtc_time *tm = &alrm->time; | ||
210 | /* read the RTC alarm registers all at once */ | ||
211 | tmp = i2c_transfer(to_i2c_adapter(fm3130->client->dev.parent), | ||
212 | &fm3130->msg[2], 2); | ||
213 | if (tmp != 2) { | ||
214 | dev_err(dev, "%s error %d\n", "read", tmp); | ||
215 | return -EIO; | ||
216 | } | ||
217 | dev_dbg(dev, "alarm read %02x %02x %02x %02x %02x\n", | ||
218 | fm3130->regs[FM3130_ALARM_SECONDS], | ||
219 | fm3130->regs[FM3130_ALARM_MINUTES], | ||
220 | fm3130->regs[FM3130_ALARM_HOURS], | ||
221 | fm3130->regs[FM3130_ALARM_DATE], | ||
222 | fm3130->regs[FM3130_ALARM_MONTHS]); | ||
223 | |||
224 | |||
225 | tm->tm_sec = BCD2BIN(fm3130->regs[FM3130_ALARM_SECONDS] & 0x7F); | ||
226 | tm->tm_min = BCD2BIN(fm3130->regs[FM3130_ALARM_MINUTES] & 0x7F); | ||
227 | tm->tm_hour = BCD2BIN(fm3130->regs[FM3130_ALARM_HOURS] & 0x3F); | ||
228 | tm->tm_mday = BCD2BIN(fm3130->regs[FM3130_ALARM_DATE] & 0x3F); | ||
229 | tm->tm_mon = BCD2BIN(fm3130->regs[FM3130_ALARM_MONTHS] & 0x1F); | ||
230 | if (tm->tm_mon > 0) | ||
231 | tm->tm_mon -= 1; /* RTC is 1-12, tm_mon is 0-11 */ | ||
232 | dev_dbg(dev, "%s secs=%d, mins=%d, " | ||
233 | "hours=%d, mday=%d, mon=%d, year=%d, wday=%d\n", | ||
234 | "read alarm", tm->tm_sec, tm->tm_min, | ||
235 | tm->tm_hour, tm->tm_mday, | ||
236 | tm->tm_mon, tm->tm_year, tm->tm_wday); | ||
237 | |||
238 | return 0; | ||
239 | } | ||
240 | |||
241 | static int fm3130_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) | ||
242 | { | ||
243 | struct fm3130 *fm3130 = dev_get_drvdata(dev); | ||
244 | struct rtc_time *tm = &alrm->time; | ||
245 | int i; | ||
246 | |||
247 | dev_dbg(dev, "%s secs=%d, mins=%d, " | ||
248 | "hours=%d, mday=%d, mon=%d, year=%d, wday=%d\n", | ||
249 | "write alarm", tm->tm_sec, tm->tm_min, | ||
250 | tm->tm_hour, tm->tm_mday, | ||
251 | tm->tm_mon, tm->tm_year, tm->tm_wday); | ||
252 | |||
253 | if (tm->tm_sec != -1) | ||
254 | fm3130->regs[FM3130_ALARM_SECONDS] = | ||
255 | BIN2BCD(tm->tm_sec) | 0x80; | ||
256 | |||
257 | if (tm->tm_min != -1) | ||
258 | fm3130->regs[FM3130_ALARM_MINUTES] = | ||
259 | BIN2BCD(tm->tm_min) | 0x80; | ||
260 | |||
261 | if (tm->tm_hour != -1) | ||
262 | fm3130->regs[FM3130_ALARM_HOURS] = | ||
263 | BIN2BCD(tm->tm_hour) | 0x80; | ||
264 | |||
265 | if (tm->tm_mday != -1) | ||
266 | fm3130->regs[FM3130_ALARM_DATE] = | ||
267 | BIN2BCD(tm->tm_mday) | 0x80; | ||
268 | |||
269 | if (tm->tm_mon != -1) | ||
270 | fm3130->regs[FM3130_ALARM_MONTHS] = | ||
271 | BIN2BCD(tm->tm_mon + 1) | 0x80; | ||
272 | |||
273 | dev_dbg(dev, "alarm write %02x %02x %02x %02x %02x\n", | ||
274 | fm3130->regs[FM3130_ALARM_SECONDS], | ||
275 | fm3130->regs[FM3130_ALARM_MINUTES], | ||
276 | fm3130->regs[FM3130_ALARM_HOURS], | ||
277 | fm3130->regs[FM3130_ALARM_DATE], | ||
278 | fm3130->regs[FM3130_ALARM_MONTHS]); | ||
279 | /* Writing time registers, we don't support multibyte transfers */ | ||
280 | for (i = 0; i < FM3130_ALARM_REGS; i++) { | ||
281 | i2c_smbus_write_byte_data(fm3130->client, | ||
282 | FM3130_ALARM_SECONDS + i, | ||
283 | fm3130->regs[FM3130_ALARM_SECONDS + i]); | ||
284 | } | ||
285 | fm3130->regs[FM3130_RTC_CONTROL] = | ||
286 | i2c_smbus_read_byte_data(fm3130->client, FM3130_RTC_CONTROL); | ||
287 | /* Checking for alarm */ | ||
288 | if (fm3130->regs[FM3130_RTC_CONTROL] & FM3130_RTC_CONTROL_BIT_AF) { | ||
289 | fm3130->alarm = 1; | ||
290 | fm3130->regs[FM3130_RTC_CONTROL] &= ~FM3130_RTC_CONTROL_BIT_AF; | ||
291 | } | ||
292 | if (alrm->enabled) { | ||
293 | i2c_smbus_write_byte_data(fm3130->client, FM3130_RTC_CONTROL, | ||
294 | (fm3130->regs[FM3130_RTC_CONTROL] & | ||
295 | ~(FM3130_RTC_CONTROL_BIT_CAL)) | | ||
296 | FM3130_RTC_CONTROL_BIT_AEN); | ||
297 | } else { | ||
298 | i2c_smbus_write_byte_data(fm3130->client, FM3130_RTC_CONTROL, | ||
299 | fm3130->regs[FM3130_RTC_CONTROL] & | ||
300 | ~(FM3130_RTC_CONTROL_BIT_AEN)); | ||
301 | } | ||
302 | return 0; | ||
303 | } | ||
304 | |||
305 | static const struct rtc_class_ops fm3130_rtc_ops = { | ||
306 | .read_time = fm3130_get_time, | ||
307 | .set_time = fm3130_set_time, | ||
308 | .read_alarm = fm3130_read_alarm, | ||
309 | .set_alarm = fm3130_set_alarm, | ||
310 | }; | ||
311 | |||
312 | static struct i2c_driver fm3130_driver; | ||
313 | |||
314 | static int __devinit fm3130_probe(struct i2c_client *client, | ||
315 | const struct i2c_device_id *id) | ||
316 | { | ||
317 | struct fm3130 *fm3130; | ||
318 | int err = -ENODEV; | ||
319 | int tmp; | ||
320 | struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); | ||
321 | |||
322 | if (!i2c_check_functionality(adapter, | ||
323 | I2C_FUNC_I2C | I2C_FUNC_SMBUS_WRITE_BYTE_DATA)) | ||
324 | return -EIO; | ||
325 | |||
326 | fm3130 = kzalloc(sizeof(struct fm3130), GFP_KERNEL); | ||
327 | |||
328 | if (!fm3130) | ||
329 | return -ENOMEM; | ||
330 | |||
331 | fm3130->client = client; | ||
332 | i2c_set_clientdata(client, fm3130); | ||
333 | fm3130->reg_addr_time = FM3130_RTC_SECONDS; | ||
334 | fm3130->reg_addr_alarm = FM3130_ALARM_SECONDS; | ||
335 | |||
336 | /* Messages to read time */ | ||
337 | fm3130->msg[0].addr = client->addr; | ||
338 | fm3130->msg[0].flags = 0; | ||
339 | fm3130->msg[0].len = 1; | ||
340 | fm3130->msg[0].buf = &fm3130->reg_addr_time; | ||
341 | |||
342 | fm3130->msg[1].addr = client->addr; | ||
343 | fm3130->msg[1].flags = I2C_M_RD; | ||
344 | fm3130->msg[1].len = FM3130_CLOCK_REGS; | ||
345 | fm3130->msg[1].buf = &fm3130->regs[FM3130_RTC_SECONDS]; | ||
346 | |||
347 | /* Messages to read alarm */ | ||
348 | fm3130->msg[2].addr = client->addr; | ||
349 | fm3130->msg[2].flags = 0; | ||
350 | fm3130->msg[2].len = 1; | ||
351 | fm3130->msg[2].buf = &fm3130->reg_addr_alarm; | ||
352 | |||
353 | fm3130->msg[3].addr = client->addr; | ||
354 | fm3130->msg[3].flags = I2C_M_RD; | ||
355 | fm3130->msg[3].len = FM3130_ALARM_REGS; | ||
356 | fm3130->msg[3].buf = &fm3130->regs[FM3130_ALARM_SECONDS]; | ||
357 | |||
358 | fm3130->data_valid = 0; | ||
359 | |||
360 | tmp = i2c_transfer(adapter, fm3130->msg, 4); | ||
361 | if (tmp != 4) { | ||
362 | pr_debug("read error %d\n", tmp); | ||
363 | err = -EIO; | ||
364 | goto exit_free; | ||
365 | } | ||
366 | |||
367 | fm3130->regs[FM3130_RTC_CONTROL] = | ||
368 | i2c_smbus_read_byte_data(client, FM3130_RTC_CONTROL); | ||
369 | fm3130->regs[FM3130_CAL_CONTROL] = | ||
370 | i2c_smbus_read_byte_data(client, FM3130_CAL_CONTROL); | ||
371 | |||
372 | /* Checking for alarm */ | ||
373 | if (fm3130->regs[FM3130_RTC_CONTROL] & FM3130_RTC_CONTROL_BIT_AF) { | ||
374 | fm3130->alarm = 1; | ||
375 | fm3130->regs[FM3130_RTC_CONTROL] &= ~FM3130_RTC_CONTROL_BIT_AF; | ||
376 | } | ||
377 | |||
378 | /* Disabling calibration mode */ | ||
379 | if (fm3130->regs[FM3130_RTC_CONTROL] & FM3130_RTC_CONTROL_BIT_CAL) | ||
380 | i2c_smbus_write_byte_data(client, FM3130_RTC_CONTROL, | ||
381 | fm3130->regs[FM3130_RTC_CONTROL] & | ||
382 | ~(FM3130_RTC_CONTROL_BIT_CAL)); | ||
383 | dev_warn(&client->dev, "Disabling calibration mode!\n"); | ||
384 | |||
385 | /* Disabling read and write modes */ | ||
386 | if (fm3130->regs[FM3130_RTC_CONTROL] & FM3130_RTC_CONTROL_BIT_WRITE || | ||
387 | fm3130->regs[FM3130_RTC_CONTROL] & FM3130_RTC_CONTROL_BIT_READ) | ||
388 | i2c_smbus_write_byte_data(client, FM3130_RTC_CONTROL, | ||
389 | fm3130->regs[FM3130_RTC_CONTROL] & | ||
390 | ~(FM3130_RTC_CONTROL_BIT_READ | | ||
391 | FM3130_RTC_CONTROL_BIT_WRITE)); | ||
392 | dev_warn(&client->dev, "Disabling READ or WRITE mode!\n"); | ||
393 | |||
394 | /* oscillator off? turn it on, so clock can tick. */ | ||
395 | if (fm3130->regs[FM3130_CAL_CONTROL] & FM3130_CAL_CONTROL_BIT_nOSCEN) | ||
396 | i2c_smbus_write_byte_data(client, FM3130_CAL_CONTROL, | ||
397 | fm3130->regs[FM3130_CAL_CONTROL] & | ||
398 | ~(FM3130_CAL_CONTROL_BIT_nOSCEN)); | ||
399 | |||
400 | /* oscillator fault? clear flag, and warn */ | ||
401 | if (fm3130->regs[FM3130_RTC_CONTROL] & FM3130_RTC_CONTROL_BIT_LB) | ||
402 | dev_warn(&client->dev, "Low battery!\n"); | ||
403 | |||
404 | /* oscillator fault? clear flag, and warn */ | ||
405 | if (fm3130->regs[FM3130_RTC_CONTROL] & FM3130_RTC_CONTROL_BIT_POR) { | ||
406 | i2c_smbus_write_byte_data(client, FM3130_RTC_CONTROL, | ||
407 | fm3130->regs[FM3130_RTC_CONTROL] & | ||
408 | ~FM3130_RTC_CONTROL_BIT_POR); | ||
409 | dev_warn(&client->dev, "SET TIME!\n"); | ||
410 | } | ||
411 | /* ACS is controlled by alarm */ | ||
412 | i2c_smbus_write_byte_data(client, FM3130_ALARM_WP_CONTROL, 0x80); | ||
413 | |||
414 | /* TODO */ | ||
415 | /* TODO need to sanity check alarm */ | ||
416 | tmp = fm3130->regs[FM3130_RTC_SECONDS]; | ||
417 | tmp = BCD2BIN(tmp & 0x7f); | ||
418 | if (tmp > 60) | ||
419 | goto exit_bad; | ||
420 | tmp = BCD2BIN(fm3130->regs[FM3130_RTC_MINUTES] & 0x7f); | ||
421 | if (tmp > 60) | ||
422 | goto exit_bad; | ||
423 | |||
424 | tmp = BCD2BIN(fm3130->regs[FM3130_RTC_DATE] & 0x3f); | ||
425 | if (tmp == 0 || tmp > 31) | ||
426 | goto exit_bad; | ||
427 | |||
428 | tmp = BCD2BIN(fm3130->regs[FM3130_RTC_MONTHS] & 0x1f); | ||
429 | if (tmp == 0 || tmp > 12) | ||
430 | goto exit_bad; | ||
431 | |||
432 | tmp = fm3130->regs[FM3130_RTC_HOURS]; | ||
433 | |||
434 | fm3130->data_valid = 1; | ||
435 | |||
436 | exit_bad: | ||
437 | if (!fm3130->data_valid) | ||
438 | dev_dbg(&client->dev, | ||
439 | "%s: %02x %02x %02x %02x %02x %02x %02x %02x" | ||
440 | "%02x %02x %02x %02x %02x %02x %02x\n", | ||
441 | "bogus registers", | ||
442 | fm3130->regs[0], fm3130->regs[1], | ||
443 | fm3130->regs[2], fm3130->regs[3], | ||
444 | fm3130->regs[4], fm3130->regs[5], | ||
445 | fm3130->regs[6], fm3130->regs[7], | ||
446 | fm3130->regs[8], fm3130->regs[9], | ||
447 | fm3130->regs[0xa], fm3130->regs[0xb], | ||
448 | fm3130->regs[0xc], fm3130->regs[0xd], | ||
449 | fm3130->regs[0xe]); | ||
450 | |||
451 | /* We won't bail out here because we just got invalid data. | ||
452 | Time setting from u-boot doesn't work anyway */ | ||
453 | fm3130->rtc = rtc_device_register(client->name, &client->dev, | ||
454 | &fm3130_rtc_ops, THIS_MODULE); | ||
455 | if (IS_ERR(fm3130->rtc)) { | ||
456 | err = PTR_ERR(fm3130->rtc); | ||
457 | dev_err(&client->dev, | ||
458 | "unable to register the class device\n"); | ||
459 | goto exit_free; | ||
460 | } | ||
461 | return 0; | ||
462 | exit_free: | ||
463 | kfree(fm3130); | ||
464 | return err; | ||
465 | } | ||
466 | |||
467 | static int __devexit fm3130_remove(struct i2c_client *client) | ||
468 | { | ||
469 | struct fm3130 *fm3130 = i2c_get_clientdata(client); | ||
470 | |||
471 | rtc_device_unregister(fm3130->rtc); | ||
472 | kfree(fm3130); | ||
473 | return 0; | ||
474 | } | ||
475 | |||
476 | static struct i2c_driver fm3130_driver = { | ||
477 | .driver = { | ||
478 | .name = "rtc-fm3130", | ||
479 | .owner = THIS_MODULE, | ||
480 | }, | ||
481 | .probe = fm3130_probe, | ||
482 | .remove = __devexit_p(fm3130_remove), | ||
483 | .id_table = fm3130_id, | ||
484 | }; | ||
485 | |||
486 | static int __init fm3130_init(void) | ||
487 | { | ||
488 | return i2c_add_driver(&fm3130_driver); | ||
489 | } | ||
490 | module_init(fm3130_init); | ||
491 | |||
492 | static void __exit fm3130_exit(void) | ||
493 | { | ||
494 | i2c_del_driver(&fm3130_driver); | ||
495 | } | ||
496 | module_exit(fm3130_exit); | ||
497 | |||
498 | MODULE_DESCRIPTION("RTC driver for FM3130"); | ||
499 | MODULE_AUTHOR("Sergey Lapin <slapin@ossfans.org>"); | ||
500 | MODULE_LICENSE("GPL"); | ||
501 | |||
diff --git a/drivers/rtc/rtc-ppc.c b/drivers/rtc/rtc-ppc.c new file mode 100644 index 000000000000..c8e97e25ef7e --- /dev/null +++ b/drivers/rtc/rtc-ppc.c | |||
@@ -0,0 +1,69 @@ | |||
1 | /* | ||
2 | * RTC driver for ppc_md RTC functions | ||
3 | * | ||
4 | * © 2007 Red Hat, Inc. | ||
5 | * | ||
6 | * Author: David Woodhouse <dwmw2@infradead.org> | ||
7 | * | ||
8 | * This program is free software; you can redistribute it and/or modify | ||
9 | * it under the terms of the GNU General Public License version 2 as | ||
10 | * published by the Free Software Foundation. | ||
11 | */ | ||
12 | |||
13 | |||
14 | #include <linux/module.h> | ||
15 | #include <linux/err.h> | ||
16 | #include <linux/rtc.h> | ||
17 | #include <linux/platform_device.h> | ||
18 | #include <asm/machdep.h> | ||
19 | |||
20 | static int ppc_rtc_read_time(struct device *dev, struct rtc_time *tm) | ||
21 | { | ||
22 | ppc_md.get_rtc_time(tm); | ||
23 | return 0; | ||
24 | } | ||
25 | |||
26 | static int ppc_rtc_set_time(struct device *dev, struct rtc_time *tm) | ||
27 | { | ||
28 | return ppc_md.set_rtc_time(tm); | ||
29 | } | ||
30 | |||
31 | static const struct rtc_class_ops ppc_rtc_ops = { | ||
32 | .set_time = ppc_rtc_set_time, | ||
33 | .read_time = ppc_rtc_read_time, | ||
34 | }; | ||
35 | |||
36 | static struct rtc_device *rtc; | ||
37 | static struct platform_device *ppc_rtc_pdev; | ||
38 | |||
39 | static int __init ppc_rtc_init(void) | ||
40 | { | ||
41 | if (!ppc_md.get_rtc_time || !ppc_md.set_rtc_time) | ||
42 | return -ENODEV; | ||
43 | |||
44 | ppc_rtc_pdev = platform_device_register_simple("ppc-rtc", 0, NULL, 0); | ||
45 | if (IS_ERR(ppc_rtc_pdev)) | ||
46 | return PTR_ERR(ppc_rtc_pdev); | ||
47 | |||
48 | rtc = rtc_device_register("ppc_md", &ppc_rtc_pdev->dev, | ||
49 | &ppc_rtc_ops, THIS_MODULE); | ||
50 | if (IS_ERR(rtc)) { | ||
51 | platform_device_unregister(ppc_rtc_pdev); | ||
52 | return PTR_ERR(rtc); | ||
53 | } | ||
54 | |||
55 | return 0; | ||
56 | } | ||
57 | |||
58 | static void __exit ppc_rtc_exit(void) | ||
59 | { | ||
60 | rtc_device_unregister(rtc); | ||
61 | platform_device_unregister(ppc_rtc_pdev); | ||
62 | } | ||
63 | |||
64 | module_init(ppc_rtc_init); | ||
65 | module_exit(ppc_rtc_exit); | ||
66 | |||
67 | MODULE_LICENSE("GPL"); | ||
68 | MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>"); | ||
69 | MODULE_DESCRIPTION("Generic RTC class driver for PowerPC"); | ||
diff --git a/drivers/rtc/rtc-sa1100.c b/drivers/rtc/rtc-sa1100.c index 82f62d25f921..67421b0d3a7b 100644 --- a/drivers/rtc/rtc-sa1100.c +++ b/drivers/rtc/rtc-sa1100.c | |||
@@ -331,14 +331,14 @@ static int sa1100_rtc_probe(struct platform_device *pdev) | |||
331 | RCNR = 0; | 331 | RCNR = 0; |
332 | } | 332 | } |
333 | 333 | ||
334 | device_init_wakeup(&pdev->dev, 1); | ||
335 | |||
334 | rtc = rtc_device_register(pdev->name, &pdev->dev, &sa1100_rtc_ops, | 336 | rtc = rtc_device_register(pdev->name, &pdev->dev, &sa1100_rtc_ops, |
335 | THIS_MODULE); | 337 | THIS_MODULE); |
336 | 338 | ||
337 | if (IS_ERR(rtc)) | 339 | if (IS_ERR(rtc)) |
338 | return PTR_ERR(rtc); | 340 | return PTR_ERR(rtc); |
339 | 341 | ||
340 | device_init_wakeup(&pdev->dev, 1); | ||
341 | |||
342 | platform_set_drvdata(pdev, rtc); | 342 | platform_set_drvdata(pdev, rtc); |
343 | 343 | ||
344 | return 0; | 344 | return 0; |
diff --git a/drivers/rtc/rtc-x1205.c b/drivers/rtc/rtc-x1205.c index eaf55945f21b..7dcfba1bbfe1 100644 --- a/drivers/rtc/rtc-x1205.c +++ b/drivers/rtc/rtc-x1205.c | |||
@@ -71,6 +71,7 @@ | |||
71 | #define X1205_SR_RTCF 0x01 /* Clock failure */ | 71 | #define X1205_SR_RTCF 0x01 /* Clock failure */ |
72 | #define X1205_SR_WEL 0x02 /* Write Enable Latch */ | 72 | #define X1205_SR_WEL 0x02 /* Write Enable Latch */ |
73 | #define X1205_SR_RWEL 0x04 /* Register Write Enable */ | 73 | #define X1205_SR_RWEL 0x04 /* Register Write Enable */ |
74 | #define X1205_SR_AL0 0x20 /* Alarm 0 match */ | ||
74 | 75 | ||
75 | #define X1205_DTR_DTR0 0x01 | 76 | #define X1205_DTR_DTR0 0x01 |
76 | #define X1205_DTR_DTR1 0x02 | 77 | #define X1205_DTR_DTR1 0x02 |
@@ -78,6 +79,8 @@ | |||
78 | 79 | ||
79 | #define X1205_HR_MIL 0x80 /* Set in ccr.hour for 24 hr mode */ | 80 | #define X1205_HR_MIL 0x80 /* Set in ccr.hour for 24 hr mode */ |
80 | 81 | ||
82 | #define X1205_INT_AL0E 0x20 /* Alarm 0 enable */ | ||
83 | |||
81 | static struct i2c_driver x1205_driver; | 84 | static struct i2c_driver x1205_driver; |
82 | 85 | ||
83 | /* | 86 | /* |
@@ -89,8 +92,8 @@ static int x1205_get_datetime(struct i2c_client *client, struct rtc_time *tm, | |||
89 | unsigned char reg_base) | 92 | unsigned char reg_base) |
90 | { | 93 | { |
91 | unsigned char dt_addr[2] = { 0, reg_base }; | 94 | unsigned char dt_addr[2] = { 0, reg_base }; |
92 | |||
93 | unsigned char buf[8]; | 95 | unsigned char buf[8]; |
96 | int i; | ||
94 | 97 | ||
95 | struct i2c_msg msgs[] = { | 98 | struct i2c_msg msgs[] = { |
96 | { client->addr, 0, 2, dt_addr }, /* setup read ptr */ | 99 | { client->addr, 0, 2, dt_addr }, /* setup read ptr */ |
@@ -98,7 +101,7 @@ static int x1205_get_datetime(struct i2c_client *client, struct rtc_time *tm, | |||
98 | }; | 101 | }; |
99 | 102 | ||
100 | /* read date registers */ | 103 | /* read date registers */ |
101 | if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) { | 104 | if (i2c_transfer(client->adapter, &msgs[0], 2) != 2) { |
102 | dev_err(&client->dev, "%s: read error\n", __func__); | 105 | dev_err(&client->dev, "%s: read error\n", __func__); |
103 | return -EIO; | 106 | return -EIO; |
104 | } | 107 | } |
@@ -110,6 +113,11 @@ static int x1205_get_datetime(struct i2c_client *client, struct rtc_time *tm, | |||
110 | buf[0], buf[1], buf[2], buf[3], | 113 | buf[0], buf[1], buf[2], buf[3], |
111 | buf[4], buf[5], buf[6], buf[7]); | 114 | buf[4], buf[5], buf[6], buf[7]); |
112 | 115 | ||
116 | /* Mask out the enable bits if these are alarm registers */ | ||
117 | if (reg_base < X1205_CCR_BASE) | ||
118 | for (i = 0; i <= 4; i++) | ||
119 | buf[i] &= 0x7F; | ||
120 | |||
113 | tm->tm_sec = BCD2BIN(buf[CCR_SEC]); | 121 | tm->tm_sec = BCD2BIN(buf[CCR_SEC]); |
114 | tm->tm_min = BCD2BIN(buf[CCR_MIN]); | 122 | tm->tm_min = BCD2BIN(buf[CCR_MIN]); |
115 | tm->tm_hour = BCD2BIN(buf[CCR_HOUR] & 0x3F); /* hr is 0-23 */ | 123 | tm->tm_hour = BCD2BIN(buf[CCR_HOUR] & 0x3F); /* hr is 0-23 */ |
@@ -138,7 +146,7 @@ static int x1205_get_status(struct i2c_client *client, unsigned char *sr) | |||
138 | }; | 146 | }; |
139 | 147 | ||
140 | /* read status register */ | 148 | /* read status register */ |
141 | if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) { | 149 | if (i2c_transfer(client->adapter, &msgs[0], 2) != 2) { |
142 | dev_err(&client->dev, "%s: read error\n", __func__); | 150 | dev_err(&client->dev, "%s: read error\n", __func__); |
143 | return -EIO; | 151 | return -EIO; |
144 | } | 152 | } |
@@ -147,10 +155,11 @@ static int x1205_get_status(struct i2c_client *client, unsigned char *sr) | |||
147 | } | 155 | } |
148 | 156 | ||
149 | static int x1205_set_datetime(struct i2c_client *client, struct rtc_time *tm, | 157 | static int x1205_set_datetime(struct i2c_client *client, struct rtc_time *tm, |
150 | int datetoo, u8 reg_base) | 158 | int datetoo, u8 reg_base, unsigned char alm_enable) |
151 | { | 159 | { |
152 | int i, xfer; | 160 | int i, xfer, nbytes; |
153 | unsigned char buf[8]; | 161 | unsigned char buf[8]; |
162 | unsigned char rdata[10] = { 0, reg_base }; | ||
154 | 163 | ||
155 | static const unsigned char wel[3] = { 0, X1205_REG_SR, | 164 | static const unsigned char wel[3] = { 0, X1205_REG_SR, |
156 | X1205_SR_WEL }; | 165 | X1205_SR_WEL }; |
@@ -189,6 +198,11 @@ static int x1205_set_datetime(struct i2c_client *client, struct rtc_time *tm, | |||
189 | buf[CCR_Y2K] = BIN2BCD(tm->tm_year / 100); | 198 | buf[CCR_Y2K] = BIN2BCD(tm->tm_year / 100); |
190 | } | 199 | } |
191 | 200 | ||
201 | /* If writing alarm registers, set compare bits on registers 0-4 */ | ||
202 | if (reg_base < X1205_CCR_BASE) | ||
203 | for (i = 0; i <= 4; i++) | ||
204 | buf[i] |= 0x80; | ||
205 | |||
192 | /* this sequence is required to unlock the chip */ | 206 | /* this sequence is required to unlock the chip */ |
193 | if ((xfer = i2c_master_send(client, wel, 3)) != 3) { | 207 | if ((xfer = i2c_master_send(client, wel, 3)) != 3) { |
194 | dev_err(&client->dev, "%s: wel - %d\n", __func__, xfer); | 208 | dev_err(&client->dev, "%s: wel - %d\n", __func__, xfer); |
@@ -200,19 +214,57 @@ static int x1205_set_datetime(struct i2c_client *client, struct rtc_time *tm, | |||
200 | return -EIO; | 214 | return -EIO; |
201 | } | 215 | } |
202 | 216 | ||
217 | |||
203 | /* write register's data */ | 218 | /* write register's data */ |
204 | for (i = 0; i < (datetoo ? 8 : 3); i++) { | 219 | if (datetoo) |
205 | unsigned char rdata[3] = { 0, reg_base + i, buf[i] }; | 220 | nbytes = 8; |
221 | else | ||
222 | nbytes = 3; | ||
223 | for (i = 0; i < nbytes; i++) | ||
224 | rdata[2+i] = buf[i]; | ||
225 | |||
226 | xfer = i2c_master_send(client, rdata, nbytes+2); | ||
227 | if (xfer != nbytes+2) { | ||
228 | dev_err(&client->dev, | ||
229 | "%s: result=%d addr=%02x, data=%02x\n", | ||
230 | __func__, | ||
231 | xfer, rdata[1], rdata[2]); | ||
232 | return -EIO; | ||
233 | } | ||
234 | |||
235 | /* If we wrote to the nonvolatile region, wait 10msec for write cycle*/ | ||
236 | if (reg_base < X1205_CCR_BASE) { | ||
237 | unsigned char al0e[3] = { 0, X1205_REG_INT, 0 }; | ||
238 | |||
239 | msleep(10); | ||
206 | 240 | ||
207 | xfer = i2c_master_send(client, rdata, 3); | 241 | /* ...and set or clear the AL0E bit in the INT register */ |
242 | |||
243 | /* Need to set RWEL again as the write has cleared it */ | ||
244 | xfer = i2c_master_send(client, rwel, 3); | ||
208 | if (xfer != 3) { | 245 | if (xfer != 3) { |
209 | dev_err(&client->dev, | 246 | dev_err(&client->dev, |
210 | "%s: xfer=%d addr=%02x, data=%02x\n", | 247 | "%s: aloe rwel - %d\n", |
211 | __func__, | 248 | __func__, |
212 | xfer, rdata[1], rdata[2]); | 249 | xfer); |
250 | return -EIO; | ||
251 | } | ||
252 | |||
253 | if (alm_enable) | ||
254 | al0e[2] = X1205_INT_AL0E; | ||
255 | |||
256 | xfer = i2c_master_send(client, al0e, 3); | ||
257 | if (xfer != 3) { | ||
258 | dev_err(&client->dev, | ||
259 | "%s: al0e - %d\n", | ||
260 | __func__, | ||
261 | xfer); | ||
213 | return -EIO; | 262 | return -EIO; |
214 | } | 263 | } |
215 | }; | 264 | |
265 | /* and wait 10msec again for this write to complete */ | ||
266 | msleep(10); | ||
267 | } | ||
216 | 268 | ||
217 | /* disable further writes */ | 269 | /* disable further writes */ |
218 | if ((xfer = i2c_master_send(client, diswe, 3)) != 3) { | 270 | if ((xfer = i2c_master_send(client, diswe, 3)) != 3) { |
@@ -230,9 +282,9 @@ static int x1205_fix_osc(struct i2c_client *client) | |||
230 | 282 | ||
231 | tm.tm_hour = tm.tm_min = tm.tm_sec = 0; | 283 | tm.tm_hour = tm.tm_min = tm.tm_sec = 0; |
232 | 284 | ||
233 | if ((err = x1205_set_datetime(client, &tm, 0, X1205_CCR_BASE)) < 0) | 285 | err = x1205_set_datetime(client, &tm, 0, X1205_CCR_BASE, 0); |
234 | dev_err(&client->dev, | 286 | if (err < 0) |
235 | "unable to restart the oscillator\n"); | 287 | dev_err(&client->dev, "unable to restart the oscillator\n"); |
236 | 288 | ||
237 | return err; | 289 | return err; |
238 | } | 290 | } |
@@ -248,7 +300,7 @@ static int x1205_get_dtrim(struct i2c_client *client, int *trim) | |||
248 | }; | 300 | }; |
249 | 301 | ||
250 | /* read dtr register */ | 302 | /* read dtr register */ |
251 | if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) { | 303 | if (i2c_transfer(client->adapter, &msgs[0], 2) != 2) { |
252 | dev_err(&client->dev, "%s: read error\n", __func__); | 304 | dev_err(&client->dev, "%s: read error\n", __func__); |
253 | return -EIO; | 305 | return -EIO; |
254 | } | 306 | } |
@@ -280,7 +332,7 @@ static int x1205_get_atrim(struct i2c_client *client, int *trim) | |||
280 | }; | 332 | }; |
281 | 333 | ||
282 | /* read atr register */ | 334 | /* read atr register */ |
283 | if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) { | 335 | if (i2c_transfer(client->adapter, &msgs[0], 2) != 2) { |
284 | dev_err(&client->dev, "%s: read error\n", __func__); | 336 | dev_err(&client->dev, "%s: read error\n", __func__); |
285 | return -EIO; | 337 | return -EIO; |
286 | } | 338 | } |
@@ -403,14 +455,33 @@ static int x1205_validate_client(struct i2c_client *client) | |||
403 | 455 | ||
404 | static int x1205_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) | 456 | static int x1205_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) |
405 | { | 457 | { |
406 | return x1205_get_datetime(to_i2c_client(dev), | 458 | int err; |
407 | &alrm->time, X1205_ALM0_BASE); | 459 | unsigned char intreg, status; |
460 | static unsigned char int_addr[2] = { 0, X1205_REG_INT }; | ||
461 | struct i2c_client *client = to_i2c_client(dev); | ||
462 | struct i2c_msg msgs[] = { | ||
463 | { client->addr, 0, 2, int_addr }, /* setup read ptr */ | ||
464 | { client->addr, I2C_M_RD, 1, &intreg }, /* read INT register */ | ||
465 | }; | ||
466 | |||
467 | /* read interrupt register and status register */ | ||
468 | if (i2c_transfer(client->adapter, &msgs[0], 2) != 2) { | ||
469 | dev_err(&client->dev, "%s: read error\n", __func__); | ||
470 | return -EIO; | ||
471 | } | ||
472 | err = x1205_get_status(client, &status); | ||
473 | if (err == 0) { | ||
474 | alrm->pending = (status & X1205_SR_AL0) ? 1 : 0; | ||
475 | alrm->enabled = (intreg & X1205_INT_AL0E) ? 1 : 0; | ||
476 | err = x1205_get_datetime(client, &alrm->time, X1205_ALM0_BASE); | ||
477 | } | ||
478 | return err; | ||
408 | } | 479 | } |
409 | 480 | ||
410 | static int x1205_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) | 481 | static int x1205_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) |
411 | { | 482 | { |
412 | return x1205_set_datetime(to_i2c_client(dev), | 483 | return x1205_set_datetime(to_i2c_client(dev), |
413 | &alrm->time, 1, X1205_ALM0_BASE); | 484 | &alrm->time, 1, X1205_ALM0_BASE, alrm->enabled); |
414 | } | 485 | } |
415 | 486 | ||
416 | static int x1205_rtc_read_time(struct device *dev, struct rtc_time *tm) | 487 | static int x1205_rtc_read_time(struct device *dev, struct rtc_time *tm) |
@@ -422,7 +493,7 @@ static int x1205_rtc_read_time(struct device *dev, struct rtc_time *tm) | |||
422 | static int x1205_rtc_set_time(struct device *dev, struct rtc_time *tm) | 493 | static int x1205_rtc_set_time(struct device *dev, struct rtc_time *tm) |
423 | { | 494 | { |
424 | return x1205_set_datetime(to_i2c_client(dev), | 495 | return x1205_set_datetime(to_i2c_client(dev), |
425 | tm, 1, X1205_CCR_BASE); | 496 | tm, 1, X1205_CCR_BASE, 0); |
426 | } | 497 | } |
427 | 498 | ||
428 | static int x1205_rtc_proc(struct device *dev, struct seq_file *seq) | 499 | static int x1205_rtc_proc(struct device *dev, struct seq_file *seq) |