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-rw-r--r--drivers/rtc/Kconfig66
-rw-r--r--drivers/rtc/Makefile7
-rw-r--r--drivers/rtc/class.c25
-rw-r--r--drivers/rtc/interface.c26
-rw-r--r--drivers/rtc/rtc-88pm860x.c427
-rw-r--r--drivers/rtc/rtc-bfin.c2
-rw-r--r--drivers/rtc/rtc-coh901331.c4
-rw-r--r--drivers/rtc/rtc-davinci.c5
-rw-r--r--drivers/rtc/rtc-ds1286.c2
-rw-r--r--drivers/rtc/rtc-em3027.c161
-rw-r--r--drivers/rtc/rtc-ep93xx.c5
-rw-r--r--drivers/rtc/rtc-m41t80.c5
-rw-r--r--drivers/rtc/rtc-m41t93.c225
-rw-r--r--drivers/rtc/rtc-max8925.c8
-rw-r--r--drivers/rtc/rtc-max8998.c5
-rw-r--r--drivers/rtc/rtc-mc13xxx.c9
-rw-r--r--drivers/rtc/rtc-mrst.c4
-rw-r--r--drivers/rtc/rtc-msm6242.c3
-rw-r--r--drivers/rtc/rtc-mxc.c25
-rw-r--r--drivers/rtc/rtc-omap.c2
-rw-r--r--drivers/rtc/rtc-pcap.c4
-rw-r--r--drivers/rtc/rtc-pcf50633.c23
-rw-r--r--drivers/rtc/rtc-rp5c01.c5
-rw-r--r--drivers/rtc/rtc-rv3029c2.c454
-rw-r--r--drivers/rtc/rtc-s3c.c15
-rw-r--r--drivers/rtc/rtc-spear.c534
-rw-r--r--drivers/rtc/rtc-tile.c162
-rw-r--r--drivers/rtc/rtc-vt8500.c366
28 files changed, 2496 insertions, 83 deletions
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index e1878877399c..f822e13dc04b 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -3,10 +3,10 @@
3# 3#
4 4
5config RTC_LIB 5config RTC_LIB
6 tristate 6 bool
7 7
8menuconfig RTC_CLASS 8menuconfig RTC_CLASS
9 tristate "Real Time Clock" 9 bool "Real Time Clock"
10 default n 10 default n
11 depends on !S390 11 depends on !S390
12 select RTC_LIB 12 select RTC_LIB
@@ -15,9 +15,6 @@ menuconfig RTC_CLASS
15 be allowed to plug one or more RTCs to your system. You will 15 be allowed to plug one or more RTCs to your system. You will
16 probably want to enable one or more of the interfaces below. 16 probably want to enable one or more of the interfaces below.
17 17
18 This driver can also be built as a module. If so, the module
19 will be called rtc-core.
20
21if RTC_CLASS 18if RTC_CLASS
22 19
23config RTC_HCTOSYS 20config RTC_HCTOSYS
@@ -128,6 +125,16 @@ comment "I2C RTC drivers"
128 125
129if I2C 126if I2C
130 127
128config RTC_DRV_88PM860X
129 tristate "Marvell 88PM860x"
130 depends on RTC_CLASS && I2C && MFD_88PM860X
131 help
132 If you say yes here you get support for RTC function in Marvell
133 88PM860x chips.
134
135 This driver can also be built as a module. If so, the module
136 will be called rtc-88pm860x.
137
131config RTC_DRV_DS1307 138config RTC_DRV_DS1307
132 tristate "Dallas/Maxim DS1307/37/38/39/40, ST M41T00, EPSON RX-8025" 139 tristate "Dallas/Maxim DS1307/37/38/39/40, ST M41T00, EPSON RX-8025"
133 help 140 help
@@ -354,12 +361,39 @@ config RTC_DRV_RX8025
354 This driver can also be built as a module. If so, the module 361 This driver can also be built as a module. If so, the module
355 will be called rtc-rx8025. 362 will be called rtc-rx8025.
356 363
364config RTC_DRV_EM3027
365 tristate "EM Microelectronic EM3027"
366 help
367 If you say yes here you get support for the EM
368 Microelectronic EM3027 RTC chips.
369
370 This driver can also be built as a module. If so, the module
371 will be called rtc-em3027.
372
373config RTC_DRV_RV3029C2
374 tristate "Micro Crystal RTC"
375 help
376 If you say yes here you get support for the Micro Crystal
377 RV3029-C2 RTC chips.
378
379 This driver can also be built as a module. If so, the module
380 will be called rtc-rv3029c2.
381
357endif # I2C 382endif # I2C
358 383
359comment "SPI RTC drivers" 384comment "SPI RTC drivers"
360 385
361if SPI_MASTER 386if SPI_MASTER
362 387
388config RTC_DRV_M41T93
389 tristate "ST M41T93"
390 help
391 If you say yes here you will get support for the
392 ST M41T93 SPI RTC chip.
393
394 This driver can also be built as a module. If so, the module
395 will be called rtc-m41t93.
396
363config RTC_DRV_M41T94 397config RTC_DRV_M41T94
364 tristate "ST M41T94" 398 tristate "ST M41T94"
365 help 399 help
@@ -648,6 +682,14 @@ config RTC_DRV_WM8350
648 This driver can also be built as a module. If so, the module 682 This driver can also be built as a module. If so, the module
649 will be called "rtc-wm8350". 683 will be called "rtc-wm8350".
650 684
685config RTC_DRV_SPEAR
686 tristate "SPEAR ST RTC"
687 depends on PLAT_SPEAR
688 default y
689 help
690 If you say Y here you will get support for the RTC found on
691 spear
692
651config RTC_DRV_PCF50633 693config RTC_DRV_PCF50633
652 depends on MFD_PCF50633 694 depends on MFD_PCF50633
653 tristate "NXP PCF50633 RTC" 695 tristate "NXP PCF50633 RTC"
@@ -877,6 +919,13 @@ config RTC_DRV_PXA
877 This RTC driver uses PXA RTC registers available since pxa27x 919 This RTC driver uses PXA RTC registers available since pxa27x
878 series (RDxR, RYxR) instead of legacy RCNR, RTAR. 920 series (RDxR, RYxR) instead of legacy RCNR, RTAR.
879 921
922config RTC_DRV_VT8500
923 tristate "VIA/WonderMedia 85xx SoC RTC"
924 depends on ARCH_VT8500
925 help
926 If you say Y here you will get access to the real time clock
927 built into your VIA VT8500 SoC or its relatives.
928
880 929
881config RTC_DRV_SUN4V 930config RTC_DRV_SUN4V
882 bool "SUN4V Hypervisor RTC" 931 bool "SUN4V Hypervisor RTC"
@@ -995,4 +1044,11 @@ config RTC_DRV_TEGRA
995 This drive can also be built as a module. If so, the module 1044 This drive can also be built as a module. If so, the module
996 will be called rtc-tegra. 1045 will be called rtc-tegra.
997 1046
1047config RTC_DRV_TILE
1048 tristate "Tilera hypervisor RTC support"
1049 depends on TILE
1050 help
1051 Enable support for the Linux driver side of the Tilera
1052 hypervisor's real-time clock interface.
1053
998endif # RTC_CLASS 1054endif # RTC_CLASS
diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index ca91c3c42e98..213d725f16d4 100644
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -15,6 +15,7 @@ rtc-core-$(CONFIG_RTC_INTF_SYSFS) += rtc-sysfs.o
15 15
16# Keep the list ordered. 16# Keep the list ordered.
17 17
18obj-$(CONFIG_RTC_DRV_88PM860X) += rtc-88pm860x.o
18obj-$(CONFIG_RTC_DRV_AB3100) += rtc-ab3100.o 19obj-$(CONFIG_RTC_DRV_AB3100) += rtc-ab3100.o
19obj-$(CONFIG_RTC_DRV_AB8500) += rtc-ab8500.o 20obj-$(CONFIG_RTC_DRV_AB8500) += rtc-ab8500.o
20obj-$(CONFIG_RTC_DRV_AT32AP700X)+= rtc-at32ap700x.o 21obj-$(CONFIG_RTC_DRV_AT32AP700X)+= rtc-at32ap700x.o
@@ -43,6 +44,7 @@ obj-$(CONFIG_RTC_DRV_DS1742) += rtc-ds1742.o
43obj-$(CONFIG_RTC_DRV_DS3232) += rtc-ds3232.o 44obj-$(CONFIG_RTC_DRV_DS3232) += rtc-ds3232.o
44obj-$(CONFIG_RTC_DRV_DS3234) += rtc-ds3234.o 45obj-$(CONFIG_RTC_DRV_DS3234) += rtc-ds3234.o
45obj-$(CONFIG_RTC_DRV_EFI) += rtc-efi.o 46obj-$(CONFIG_RTC_DRV_EFI) += rtc-efi.o
47obj-$(CONFIG_RTC_DRV_EM3027) += rtc-em3027.o
46obj-$(CONFIG_RTC_DRV_EP93XX) += rtc-ep93xx.o 48obj-$(CONFIG_RTC_DRV_EP93XX) += rtc-ep93xx.o
47obj-$(CONFIG_RTC_DRV_FM3130) += rtc-fm3130.o 49obj-$(CONFIG_RTC_DRV_FM3130) += rtc-fm3130.o
48obj-$(CONFIG_RTC_DRV_GENERIC) += rtc-generic.o 50obj-$(CONFIG_RTC_DRV_GENERIC) += rtc-generic.o
@@ -52,6 +54,7 @@ obj-$(CONFIG_RTC_DRV_ISL12022) += rtc-isl12022.o
52obj-$(CONFIG_RTC_DRV_JZ4740) += rtc-jz4740.o 54obj-$(CONFIG_RTC_DRV_JZ4740) += rtc-jz4740.o
53obj-$(CONFIG_RTC_DRV_LPC32XX) += rtc-lpc32xx.o 55obj-$(CONFIG_RTC_DRV_LPC32XX) += rtc-lpc32xx.o
54obj-$(CONFIG_RTC_DRV_M41T80) += rtc-m41t80.o 56obj-$(CONFIG_RTC_DRV_M41T80) += rtc-m41t80.o
57obj-$(CONFIG_RTC_DRV_M41T93) += rtc-m41t93.o
55obj-$(CONFIG_RTC_DRV_M41T94) += rtc-m41t94.o 58obj-$(CONFIG_RTC_DRV_M41T94) += rtc-m41t94.o
56obj-$(CONFIG_RTC_DRV_M48T35) += rtc-m48t35.o 59obj-$(CONFIG_RTC_DRV_M48T35) += rtc-m48t35.o
57obj-$(CONFIG_RTC_DRV_M48T59) += rtc-m48t59.o 60obj-$(CONFIG_RTC_DRV_M48T59) += rtc-m48t59.o
@@ -81,22 +84,26 @@ obj-$(CONFIG_RTC_DRV_RP5C01) += rtc-rp5c01.o
81obj-$(CONFIG_RTC_DRV_RS5C313) += rtc-rs5c313.o 84obj-$(CONFIG_RTC_DRV_RS5C313) += rtc-rs5c313.o
82obj-$(CONFIG_RTC_DRV_RS5C348) += rtc-rs5c348.o 85obj-$(CONFIG_RTC_DRV_RS5C348) += rtc-rs5c348.o
83obj-$(CONFIG_RTC_DRV_RS5C372) += rtc-rs5c372.o 86obj-$(CONFIG_RTC_DRV_RS5C372) += rtc-rs5c372.o
87obj-$(CONFIG_RTC_DRV_RV3029C2) += rtc-rv3029c2.o
84obj-$(CONFIG_RTC_DRV_RX8025) += rtc-rx8025.o 88obj-$(CONFIG_RTC_DRV_RX8025) += rtc-rx8025.o
85obj-$(CONFIG_RTC_DRV_RX8581) += rtc-rx8581.o 89obj-$(CONFIG_RTC_DRV_RX8581) += rtc-rx8581.o
86obj-$(CONFIG_RTC_DRV_S35390A) += rtc-s35390a.o 90obj-$(CONFIG_RTC_DRV_S35390A) += rtc-s35390a.o
87obj-$(CONFIG_RTC_DRV_S3C) += rtc-s3c.o 91obj-$(CONFIG_RTC_DRV_S3C) += rtc-s3c.o
88obj-$(CONFIG_RTC_DRV_SA1100) += rtc-sa1100.o 92obj-$(CONFIG_RTC_DRV_SA1100) += rtc-sa1100.o
89obj-$(CONFIG_RTC_DRV_SH) += rtc-sh.o 93obj-$(CONFIG_RTC_DRV_SH) += rtc-sh.o
94obj-$(CONFIG_RTC_DRV_SPEAR) += rtc-spear.o
90obj-$(CONFIG_RTC_DRV_STARFIRE) += rtc-starfire.o 95obj-$(CONFIG_RTC_DRV_STARFIRE) += rtc-starfire.o
91obj-$(CONFIG_RTC_DRV_STK17TA8) += rtc-stk17ta8.o 96obj-$(CONFIG_RTC_DRV_STK17TA8) += rtc-stk17ta8.o
92obj-$(CONFIG_RTC_DRV_STMP) += rtc-stmp3xxx.o 97obj-$(CONFIG_RTC_DRV_STMP) += rtc-stmp3xxx.o
93obj-$(CONFIG_RTC_DRV_SUN4V) += rtc-sun4v.o 98obj-$(CONFIG_RTC_DRV_SUN4V) += rtc-sun4v.o
94obj-$(CONFIG_RTC_DRV_TEGRA) += rtc-tegra.o 99obj-$(CONFIG_RTC_DRV_TEGRA) += rtc-tegra.o
95obj-$(CONFIG_RTC_DRV_TEST) += rtc-test.o 100obj-$(CONFIG_RTC_DRV_TEST) += rtc-test.o
101obj-$(CONFIG_RTC_DRV_TILE) += rtc-tile.o
96obj-$(CONFIG_RTC_DRV_TWL4030) += rtc-twl.o 102obj-$(CONFIG_RTC_DRV_TWL4030) += rtc-twl.o
97obj-$(CONFIG_RTC_DRV_TX4939) += rtc-tx4939.o 103obj-$(CONFIG_RTC_DRV_TX4939) += rtc-tx4939.o
98obj-$(CONFIG_RTC_DRV_V3020) += rtc-v3020.o 104obj-$(CONFIG_RTC_DRV_V3020) += rtc-v3020.o
99obj-$(CONFIG_RTC_DRV_VR41XX) += rtc-vr41xx.o 105obj-$(CONFIG_RTC_DRV_VR41XX) += rtc-vr41xx.o
106obj-$(CONFIG_RTC_DRV_VT8500) += rtc-vt8500.o
100obj-$(CONFIG_RTC_DRV_WM831X) += rtc-wm831x.o 107obj-$(CONFIG_RTC_DRV_WM831X) += rtc-wm831x.o
101obj-$(CONFIG_RTC_DRV_WM8350) += rtc-wm8350.o 108obj-$(CONFIG_RTC_DRV_WM8350) += rtc-wm8350.o
102obj-$(CONFIG_RTC_DRV_X1205) += rtc-x1205.o 109obj-$(CONFIG_RTC_DRV_X1205) += rtc-x1205.o
diff --git a/drivers/rtc/class.c b/drivers/rtc/class.c
index 09b4437b3e61..4194e59e14cd 100644
--- a/drivers/rtc/class.c
+++ b/drivers/rtc/class.c
@@ -41,26 +41,21 @@ static void rtc_device_release(struct device *dev)
41 * system's wall clock; restore it on resume(). 41 * system's wall clock; restore it on resume().
42 */ 42 */
43 43
44static struct timespec delta;
45static time_t oldtime; 44static time_t oldtime;
45static struct timespec oldts;
46 46
47static int rtc_suspend(struct device *dev, pm_message_t mesg) 47static int rtc_suspend(struct device *dev, pm_message_t mesg)
48{ 48{
49 struct rtc_device *rtc = to_rtc_device(dev); 49 struct rtc_device *rtc = to_rtc_device(dev);
50 struct rtc_time tm; 50 struct rtc_time tm;
51 struct timespec ts = current_kernel_time();
52 51
53 if (strcmp(dev_name(&rtc->dev), CONFIG_RTC_HCTOSYS_DEVICE) != 0) 52 if (strcmp(dev_name(&rtc->dev), CONFIG_RTC_HCTOSYS_DEVICE) != 0)
54 return 0; 53 return 0;
55 54
56 rtc_read_time(rtc, &tm); 55 rtc_read_time(rtc, &tm);
56 ktime_get_ts(&oldts);
57 rtc_tm_to_time(&tm, &oldtime); 57 rtc_tm_to_time(&tm, &oldtime);
58 58
59 /* RTC precision is 1 second; adjust delta for avg 1/2 sec err */
60 set_normalized_timespec(&delta,
61 ts.tv_sec - oldtime,
62 ts.tv_nsec - (NSEC_PER_SEC >> 1));
63
64 return 0; 59 return 0;
65} 60}
66 61
@@ -70,10 +65,12 @@ static int rtc_resume(struct device *dev)
70 struct rtc_time tm; 65 struct rtc_time tm;
71 time_t newtime; 66 time_t newtime;
72 struct timespec time; 67 struct timespec time;
68 struct timespec newts;
73 69
74 if (strcmp(dev_name(&rtc->dev), CONFIG_RTC_HCTOSYS_DEVICE) != 0) 70 if (strcmp(dev_name(&rtc->dev), CONFIG_RTC_HCTOSYS_DEVICE) != 0)
75 return 0; 71 return 0;
76 72
73 ktime_get_ts(&newts);
77 rtc_read_time(rtc, &tm); 74 rtc_read_time(rtc, &tm);
78 if (rtc_valid_tm(&tm) != 0) { 75 if (rtc_valid_tm(&tm) != 0) {
79 pr_debug("%s: bogus resume time\n", dev_name(&rtc->dev)); 76 pr_debug("%s: bogus resume time\n", dev_name(&rtc->dev));
@@ -85,15 +82,13 @@ static int rtc_resume(struct device *dev)
85 pr_debug("%s: time travel!\n", dev_name(&rtc->dev)); 82 pr_debug("%s: time travel!\n", dev_name(&rtc->dev));
86 return 0; 83 return 0;
87 } 84 }
85 /* calculate the RTC time delta */
86 set_normalized_timespec(&time, newtime - oldtime, 0);
88 87
89 /* restore wall clock using delta against this RTC; 88 /* subtract kernel time between rtc_suspend to rtc_resume */
90 * adjust again for avg 1/2 second RTC sampling error 89 time = timespec_sub(time, timespec_sub(newts, oldts));
91 */
92 set_normalized_timespec(&time,
93 newtime + delta.tv_sec,
94 (NSEC_PER_SEC >> 1) + delta.tv_nsec);
95 do_settimeofday(&time);
96 90
91 timekeeping_inject_sleeptime(&time);
97 return 0; 92 return 0;
98} 93}
99 94
@@ -171,7 +166,7 @@ struct rtc_device *rtc_device_register(const char *name, struct device *dev,
171 err = __rtc_read_alarm(rtc, &alrm); 166 err = __rtc_read_alarm(rtc, &alrm);
172 167
173 if (!err && !rtc_valid_tm(&alrm.time)) 168 if (!err && !rtc_valid_tm(&alrm.time))
174 rtc_set_alarm(rtc, &alrm); 169 rtc_initialize_alarm(rtc, &alrm);
175 170
176 strlcpy(rtc->name, name, RTC_DEVICE_NAME_SIZE); 171 strlcpy(rtc->name, name, RTC_DEVICE_NAME_SIZE);
177 dev_set_name(&rtc->dev, "rtc%d", id); 172 dev_set_name(&rtc->dev, "rtc%d", id);
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
index 23719f0acbf6..ef6316acec43 100644
--- a/drivers/rtc/interface.c
+++ b/drivers/rtc/interface.c
@@ -375,6 +375,32 @@ int rtc_set_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
375} 375}
376EXPORT_SYMBOL_GPL(rtc_set_alarm); 376EXPORT_SYMBOL_GPL(rtc_set_alarm);
377 377
378/* Called once per device from rtc_device_register */
379int rtc_initialize_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm)
380{
381 int err;
382
383 err = rtc_valid_tm(&alarm->time);
384 if (err != 0)
385 return err;
386
387 err = mutex_lock_interruptible(&rtc->ops_lock);
388 if (err)
389 return err;
390
391 rtc->aie_timer.node.expires = rtc_tm_to_ktime(alarm->time);
392 rtc->aie_timer.period = ktime_set(0, 0);
393 if (alarm->enabled) {
394 rtc->aie_timer.enabled = 1;
395 timerqueue_add(&rtc->timerqueue, &rtc->aie_timer.node);
396 }
397 mutex_unlock(&rtc->ops_lock);
398 return err;
399}
400EXPORT_SYMBOL_GPL(rtc_initialize_alarm);
401
402
403
378int rtc_alarm_irq_enable(struct rtc_device *rtc, unsigned int enabled) 404int rtc_alarm_irq_enable(struct rtc_device *rtc, unsigned int enabled)
379{ 405{
380 int err = mutex_lock_interruptible(&rtc->ops_lock); 406 int err = mutex_lock_interruptible(&rtc->ops_lock);
diff --git a/drivers/rtc/rtc-88pm860x.c b/drivers/rtc/rtc-88pm860x.c
new file mode 100644
index 000000000000..64b847b7f970
--- /dev/null
+++ b/drivers/rtc/rtc-88pm860x.c
@@ -0,0 +1,427 @@
1/*
2 * Real Time Clock driver for Marvell 88PM860x PMIC
3 *
4 * Copyright (c) 2010 Marvell International Ltd.
5 * Author: Haojian Zhuang <haojian.zhuang@marvell.com>
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/kernel.h>
13#include <linux/module.h>
14#include <linux/platform_device.h>
15#include <linux/slab.h>
16#include <linux/mutex.h>
17#include <linux/rtc.h>
18#include <linux/delay.h>
19#include <linux/mfd/core.h>
20#include <linux/mfd/88pm860x.h>
21
22#define VRTC_CALIBRATION
23
24struct pm860x_rtc_info {
25 struct pm860x_chip *chip;
26 struct i2c_client *i2c;
27 struct rtc_device *rtc_dev;
28 struct device *dev;
29 struct delayed_work calib_work;
30
31 int irq;
32 int vrtc;
33 int (*sync)(unsigned int ticks);
34};
35
36#define REG_VRTC_MEAS1 0x7D
37
38#define REG0_ADDR 0xB0
39#define REG1_ADDR 0xB2
40#define REG2_ADDR 0xB4
41#define REG3_ADDR 0xB6
42
43#define REG0_DATA 0xB1
44#define REG1_DATA 0xB3
45#define REG2_DATA 0xB5
46#define REG3_DATA 0xB7
47
48/* bit definitions of Measurement Enable Register 2 (0x51) */
49#define MEAS2_VRTC (1 << 0)
50
51/* bit definitions of RTC Register 1 (0xA0) */
52#define ALARM_EN (1 << 3)
53#define ALARM_WAKEUP (1 << 4)
54#define ALARM (1 << 5)
55#define RTC1_USE_XO (1 << 7)
56
57#define VRTC_CALIB_INTERVAL (HZ * 60 * 10) /* 10 minutes */
58
59static irqreturn_t rtc_update_handler(int irq, void *data)
60{
61 struct pm860x_rtc_info *info = (struct pm860x_rtc_info *)data;
62 int mask;
63
64 mask = ALARM | ALARM_WAKEUP;
65 pm860x_set_bits(info->i2c, PM8607_RTC1, mask | ALARM_EN, mask);
66 rtc_update_irq(info->rtc_dev, 1, RTC_AF);
67 return IRQ_HANDLED;
68}
69
70static int pm860x_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
71{
72 struct pm860x_rtc_info *info = dev_get_drvdata(dev);
73
74 if (enabled)
75 pm860x_set_bits(info->i2c, PM8607_RTC1, ALARM, ALARM);
76 else
77 pm860x_set_bits(info->i2c, PM8607_RTC1, ALARM, 0);
78 return 0;
79}
80
81/*
82 * Calculate the next alarm time given the requested alarm time mask
83 * and the current time.
84 */
85static void rtc_next_alarm_time(struct rtc_time *next, struct rtc_time *now,
86 struct rtc_time *alrm)
87{
88 unsigned long next_time;
89 unsigned long now_time;
90
91 next->tm_year = now->tm_year;
92 next->tm_mon = now->tm_mon;
93 next->tm_mday = now->tm_mday;
94 next->tm_hour = alrm->tm_hour;
95 next->tm_min = alrm->tm_min;
96 next->tm_sec = alrm->tm_sec;
97
98 rtc_tm_to_time(now, &now_time);
99 rtc_tm_to_time(next, &next_time);
100
101 if (next_time < now_time) {
102 /* Advance one day */
103 next_time += 60 * 60 * 24;
104 rtc_time_to_tm(next_time, next);
105 }
106}
107
108static int pm860x_rtc_read_time(struct device *dev, struct rtc_time *tm)
109{
110 struct pm860x_rtc_info *info = dev_get_drvdata(dev);
111 unsigned char buf[8];
112 unsigned long ticks, base, data;
113
114 pm860x_page_bulk_read(info->i2c, REG0_ADDR, 8, buf);
115 dev_dbg(info->dev, "%x-%x-%x-%x-%x-%x-%x-%x\n", buf[0], buf[1],
116 buf[2], buf[3], buf[4], buf[5], buf[6], buf[7]);
117 base = (buf[1] << 24) | (buf[3] << 16) | (buf[5] << 8) | buf[7];
118
119 /* load 32-bit read-only counter */
120 pm860x_bulk_read(info->i2c, PM8607_RTC_COUNTER1, 4, buf);
121 data = (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0];
122 ticks = base + data;
123 dev_dbg(info->dev, "get base:0x%lx, RO count:0x%lx, ticks:0x%lx\n",
124 base, data, ticks);
125
126 rtc_time_to_tm(ticks, tm);
127
128 return 0;
129}
130
131static int pm860x_rtc_set_time(struct device *dev, struct rtc_time *tm)
132{
133 struct pm860x_rtc_info *info = dev_get_drvdata(dev);
134 unsigned char buf[4];
135 unsigned long ticks, base, data;
136
137 if ((tm->tm_year < 70) || (tm->tm_year > 138)) {
138 dev_dbg(info->dev, "Set time %d out of range. "
139 "Please set time between 1970 to 2038.\n",
140 1900 + tm->tm_year);
141 return -EINVAL;
142 }
143 rtc_tm_to_time(tm, &ticks);
144
145 /* load 32-bit read-only counter */
146 pm860x_bulk_read(info->i2c, PM8607_RTC_COUNTER1, 4, buf);
147 data = (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0];
148 base = ticks - data;
149 dev_dbg(info->dev, "set base:0x%lx, RO count:0x%lx, ticks:0x%lx\n",
150 base, data, ticks);
151
152 pm860x_page_reg_write(info->i2c, REG0_DATA, (base >> 24) & 0xFF);
153 pm860x_page_reg_write(info->i2c, REG1_DATA, (base >> 16) & 0xFF);
154 pm860x_page_reg_write(info->i2c, REG2_DATA, (base >> 8) & 0xFF);
155 pm860x_page_reg_write(info->i2c, REG3_DATA, base & 0xFF);
156
157 if (info->sync)
158 info->sync(ticks);
159 return 0;
160}
161
162static int pm860x_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
163{
164 struct pm860x_rtc_info *info = dev_get_drvdata(dev);
165 unsigned char buf[8];
166 unsigned long ticks, base, data;
167 int ret;
168
169 pm860x_page_bulk_read(info->i2c, REG0_ADDR, 8, buf);
170 dev_dbg(info->dev, "%x-%x-%x-%x-%x-%x-%x-%x\n", buf[0], buf[1],
171 buf[2], buf[3], buf[4], buf[5], buf[6], buf[7]);
172 base = (buf[1] << 24) | (buf[3] << 16) | (buf[5] << 8) | buf[7];
173
174 pm860x_bulk_read(info->i2c, PM8607_RTC_EXPIRE1, 4, buf);
175 data = (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0];
176 ticks = base + data;
177 dev_dbg(info->dev, "get base:0x%lx, RO count:0x%lx, ticks:0x%lx\n",
178 base, data, ticks);
179
180 rtc_time_to_tm(ticks, &alrm->time);
181 ret = pm860x_reg_read(info->i2c, PM8607_RTC1);
182 alrm->enabled = (ret & ALARM_EN) ? 1 : 0;
183 alrm->pending = (ret & (ALARM | ALARM_WAKEUP)) ? 1 : 0;
184 return 0;
185}
186
187static int pm860x_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
188{
189 struct pm860x_rtc_info *info = dev_get_drvdata(dev);
190 struct rtc_time now_tm, alarm_tm;
191 unsigned long ticks, base, data;
192 unsigned char buf[8];
193 int mask;
194
195 pm860x_set_bits(info->i2c, PM8607_RTC1, ALARM_EN, 0);
196
197 pm860x_page_bulk_read(info->i2c, REG0_ADDR, 8, buf);
198 dev_dbg(info->dev, "%x-%x-%x-%x-%x-%x-%x-%x\n", buf[0], buf[1],
199 buf[2], buf[3], buf[4], buf[5], buf[6], buf[7]);
200 base = (buf[1] << 24) | (buf[3] << 16) | (buf[5] << 8) | buf[7];
201
202 /* load 32-bit read-only counter */
203 pm860x_bulk_read(info->i2c, PM8607_RTC_COUNTER1, 4, buf);
204 data = (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0];
205 ticks = base + data;
206 dev_dbg(info->dev, "get base:0x%lx, RO count:0x%lx, ticks:0x%lx\n",
207 base, data, ticks);
208
209 rtc_time_to_tm(ticks, &now_tm);
210 rtc_next_alarm_time(&alarm_tm, &now_tm, &alrm->time);
211 /* get new ticks for alarm in 24 hours */
212 rtc_tm_to_time(&alarm_tm, &ticks);
213 data = ticks - base;
214
215 buf[0] = data & 0xff;
216 buf[1] = (data >> 8) & 0xff;
217 buf[2] = (data >> 16) & 0xff;
218 buf[3] = (data >> 24) & 0xff;
219 pm860x_bulk_write(info->i2c, PM8607_RTC_EXPIRE1, 4, buf);
220 if (alrm->enabled) {
221 mask = ALARM | ALARM_WAKEUP | ALARM_EN;
222 pm860x_set_bits(info->i2c, PM8607_RTC1, mask, mask);
223 } else {
224 mask = ALARM | ALARM_WAKEUP | ALARM_EN;
225 pm860x_set_bits(info->i2c, PM8607_RTC1, mask,
226 ALARM | ALARM_WAKEUP);
227 }
228 return 0;
229}
230
231static const struct rtc_class_ops pm860x_rtc_ops = {
232 .read_time = pm860x_rtc_read_time,
233 .set_time = pm860x_rtc_set_time,
234 .read_alarm = pm860x_rtc_read_alarm,
235 .set_alarm = pm860x_rtc_set_alarm,
236 .alarm_irq_enable = pm860x_rtc_alarm_irq_enable,
237};
238
239#ifdef VRTC_CALIBRATION
240static void calibrate_vrtc_work(struct work_struct *work)
241{
242 struct pm860x_rtc_info *info = container_of(work,
243 struct pm860x_rtc_info, calib_work.work);
244 unsigned char buf[2];
245 unsigned int sum, data, mean, vrtc_set;
246 int i;
247
248 for (i = 0, sum = 0; i < 16; i++) {
249 msleep(100);
250 pm860x_bulk_read(info->i2c, REG_VRTC_MEAS1, 2, buf);
251 data = (buf[0] << 4) | buf[1];
252 data = (data * 5400) >> 12; /* convert to mv */
253 sum += data;
254 }
255 mean = sum >> 4;
256 vrtc_set = 2700 + (info->vrtc & 0x3) * 200;
257 dev_dbg(info->dev, "mean:%d, vrtc_set:%d\n", mean, vrtc_set);
258
259 sum = pm860x_reg_read(info->i2c, PM8607_RTC_MISC1);
260 data = sum & 0x3;
261 if ((mean + 200) < vrtc_set) {
262 /* try higher voltage */
263 if (++data == 4)
264 goto out;
265 data = (sum & 0xf8) | (data & 0x3);
266 pm860x_reg_write(info->i2c, PM8607_RTC_MISC1, data);
267 } else if ((mean - 200) > vrtc_set) {
268 /* try lower voltage */
269 if (data-- == 0)
270 goto out;
271 data = (sum & 0xf8) | (data & 0x3);
272 pm860x_reg_write(info->i2c, PM8607_RTC_MISC1, data);
273 } else
274 goto out;
275 dev_dbg(info->dev, "set 0x%x to RTC_MISC1\n", data);
276 /* trigger next calibration since VRTC is updated */
277 schedule_delayed_work(&info->calib_work, VRTC_CALIB_INTERVAL);
278 return;
279out:
280 /* disable measurement */
281 pm860x_set_bits(info->i2c, PM8607_MEAS_EN2, MEAS2_VRTC, 0);
282 dev_dbg(info->dev, "finish VRTC calibration\n");
283 return;
284}
285#endif
286
287static int __devinit pm860x_rtc_probe(struct platform_device *pdev)
288{
289 struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
290 struct pm860x_rtc_pdata *pdata = NULL;
291 struct pm860x_rtc_info *info;
292 struct rtc_time tm;
293 unsigned long ticks = 0;
294 int ret;
295
296 pdata = pdev->dev.platform_data;
297 if (pdata == NULL)
298 dev_warn(&pdev->dev, "No platform data!\n");
299
300 info = kzalloc(sizeof(struct pm860x_rtc_info), GFP_KERNEL);
301 if (!info)
302 return -ENOMEM;
303 info->irq = platform_get_irq(pdev, 0);
304 if (info->irq < 0) {
305 dev_err(&pdev->dev, "No IRQ resource!\n");
306 ret = -EINVAL;
307 goto out;
308 }
309
310 info->chip = chip;
311 info->i2c = (chip->id == CHIP_PM8607) ? chip->client : chip->companion;
312 info->dev = &pdev->dev;
313 dev_set_drvdata(&pdev->dev, info);
314
315 ret = request_threaded_irq(info->irq, NULL, rtc_update_handler,
316 IRQF_ONESHOT, "rtc", info);
317 if (ret < 0) {
318 dev_err(chip->dev, "Failed to request IRQ: #%d: %d\n",
319 info->irq, ret);
320 goto out;
321 }
322
323 /* set addresses of 32-bit base value for RTC time */
324 pm860x_page_reg_write(info->i2c, REG0_ADDR, REG0_DATA);
325 pm860x_page_reg_write(info->i2c, REG1_ADDR, REG1_DATA);
326 pm860x_page_reg_write(info->i2c, REG2_ADDR, REG2_DATA);
327 pm860x_page_reg_write(info->i2c, REG3_ADDR, REG3_DATA);
328
329 ret = pm860x_rtc_read_time(&pdev->dev, &tm);
330 if (ret < 0) {
331 dev_err(&pdev->dev, "Failed to read initial time.\n");
332 goto out_rtc;
333 }
334 if ((tm.tm_year < 70) || (tm.tm_year > 138)) {
335 tm.tm_year = 70;
336 tm.tm_mon = 0;
337 tm.tm_mday = 1;
338 tm.tm_hour = 0;
339 tm.tm_min = 0;
340 tm.tm_sec = 0;
341 ret = pm860x_rtc_set_time(&pdev->dev, &tm);
342 if (ret < 0) {
343 dev_err(&pdev->dev, "Failed to set initial time.\n");
344 goto out_rtc;
345 }
346 }
347 rtc_tm_to_time(&tm, &ticks);
348 if (pdata && pdata->sync) {
349 pdata->sync(ticks);
350 info->sync = pdata->sync;
351 }
352
353 info->rtc_dev = rtc_device_register("88pm860x-rtc", &pdev->dev,
354 &pm860x_rtc_ops, THIS_MODULE);
355 ret = PTR_ERR(info->rtc_dev);
356 if (IS_ERR(info->rtc_dev)) {
357 dev_err(&pdev->dev, "Failed to register RTC device: %d\n", ret);
358 goto out_rtc;
359 }
360
361 /*
362 * enable internal XO instead of internal 3.25MHz clock since it can
363 * free running in PMIC power-down state.
364 */
365 pm860x_set_bits(info->i2c, PM8607_RTC1, RTC1_USE_XO, RTC1_USE_XO);
366
367#ifdef VRTC_CALIBRATION
368 /* <00> -- 2.7V, <01> -- 2.9V, <10> -- 3.1V, <11> -- 3.3V */
369 if (pdata && pdata->vrtc)
370 info->vrtc = pdata->vrtc & 0x3;
371 else
372 info->vrtc = 1;
373 pm860x_set_bits(info->i2c, PM8607_MEAS_EN2, MEAS2_VRTC, MEAS2_VRTC);
374
375 /* calibrate VRTC */
376 INIT_DELAYED_WORK(&info->calib_work, calibrate_vrtc_work);
377 schedule_delayed_work(&info->calib_work, VRTC_CALIB_INTERVAL);
378#endif /* VRTC_CALIBRATION */
379 return 0;
380out_rtc:
381 free_irq(info->irq, info);
382out:
383 kfree(info);
384 return ret;
385}
386
387static int __devexit pm860x_rtc_remove(struct platform_device *pdev)
388{
389 struct pm860x_rtc_info *info = platform_get_drvdata(pdev);
390
391#ifdef VRTC_CALIBRATION
392 flush_scheduled_work();
393 /* disable measurement */
394 pm860x_set_bits(info->i2c, PM8607_MEAS_EN2, MEAS2_VRTC, 0);
395#endif /* VRTC_CALIBRATION */
396
397 platform_set_drvdata(pdev, NULL);
398 rtc_device_unregister(info->rtc_dev);
399 free_irq(info->irq, info);
400 kfree(info);
401 return 0;
402}
403
404static struct platform_driver pm860x_rtc_driver = {
405 .driver = {
406 .name = "88pm860x-rtc",
407 .owner = THIS_MODULE,
408 },
409 .probe = pm860x_rtc_probe,
410 .remove = __devexit_p(pm860x_rtc_remove),
411};
412
413static int __init pm860x_rtc_init(void)
414{
415 return platform_driver_register(&pm860x_rtc_driver);
416}
417module_init(pm860x_rtc_init);
418
419static void __exit pm860x_rtc_exit(void)
420{
421 platform_driver_unregister(&pm860x_rtc_driver);
422}
423module_exit(pm860x_rtc_exit);
424
425MODULE_DESCRIPTION("Marvell 88PM860x RTC driver");
426MODULE_AUTHOR("Haojian Zhuang <haojian.zhuang@marvell.com>");
427MODULE_LICENSE("GPL");
diff --git a/drivers/rtc/rtc-bfin.c b/drivers/rtc/rtc-bfin.c
index a0fc4cf42abf..90d866272c8e 100644
--- a/drivers/rtc/rtc-bfin.c
+++ b/drivers/rtc/rtc-bfin.c
@@ -250,6 +250,8 @@ static int bfin_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
250 bfin_rtc_int_set_alarm(rtc); 250 bfin_rtc_int_set_alarm(rtc);
251 else 251 else
252 bfin_rtc_int_clear(~(RTC_ISTAT_ALARM | RTC_ISTAT_ALARM_DAY)); 252 bfin_rtc_int_clear(~(RTC_ISTAT_ALARM | RTC_ISTAT_ALARM_DAY));
253
254 return 0;
253} 255}
254 256
255static int bfin_rtc_read_time(struct device *dev, struct rtc_time *tm) 257static int bfin_rtc_read_time(struct device *dev, struct rtc_time *tm)
diff --git a/drivers/rtc/rtc-coh901331.c b/drivers/rtc/rtc-coh901331.c
index 316f484999b5..80f9c88214c5 100644
--- a/drivers/rtc/rtc-coh901331.c
+++ b/drivers/rtc/rtc-coh901331.c
@@ -220,6 +220,7 @@ static int __init coh901331_probe(struct platform_device *pdev)
220 } 220 }
221 clk_disable(rtap->clk); 221 clk_disable(rtap->clk);
222 222
223 platform_set_drvdata(pdev, rtap);
223 rtap->rtc = rtc_device_register("coh901331", &pdev->dev, &coh901331_ops, 224 rtap->rtc = rtc_device_register("coh901331", &pdev->dev, &coh901331_ops,
224 THIS_MODULE); 225 THIS_MODULE);
225 if (IS_ERR(rtap->rtc)) { 226 if (IS_ERR(rtap->rtc)) {
@@ -227,11 +228,10 @@ static int __init coh901331_probe(struct platform_device *pdev)
227 goto out_no_rtc; 228 goto out_no_rtc;
228 } 229 }
229 230
230 platform_set_drvdata(pdev, rtap);
231
232 return 0; 231 return 0;
233 232
234 out_no_rtc: 233 out_no_rtc:
234 platform_set_drvdata(pdev, NULL);
235 out_no_clk_enable: 235 out_no_clk_enable:
236 clk_put(rtap->clk); 236 clk_put(rtap->clk);
237 out_no_clk: 237 out_no_clk:
diff --git a/drivers/rtc/rtc-davinci.c b/drivers/rtc/rtc-davinci.c
index 8d46838dff8a..755e1fe914af 100644
--- a/drivers/rtc/rtc-davinci.c
+++ b/drivers/rtc/rtc-davinci.c
@@ -524,6 +524,8 @@ static int __init davinci_rtc_probe(struct platform_device *pdev)
524 goto fail2; 524 goto fail2;
525 } 525 }
526 526
527 platform_set_drvdata(pdev, davinci_rtc);
528
527 davinci_rtc->rtc = rtc_device_register(pdev->name, &pdev->dev, 529 davinci_rtc->rtc = rtc_device_register(pdev->name, &pdev->dev,
528 &davinci_rtc_ops, THIS_MODULE); 530 &davinci_rtc_ops, THIS_MODULE);
529 if (IS_ERR(davinci_rtc->rtc)) { 531 if (IS_ERR(davinci_rtc->rtc)) {
@@ -553,8 +555,6 @@ static int __init davinci_rtc_probe(struct platform_device *pdev)
553 555
554 rtcss_write(davinci_rtc, PRTCSS_RTC_CCTRL_CAEN, PRTCSS_RTC_CCTRL); 556 rtcss_write(davinci_rtc, PRTCSS_RTC_CCTRL_CAEN, PRTCSS_RTC_CCTRL);
555 557
556 platform_set_drvdata(pdev, davinci_rtc);
557
558 device_init_wakeup(&pdev->dev, 0); 558 device_init_wakeup(&pdev->dev, 0);
559 559
560 return 0; 560 return 0;
@@ -562,6 +562,7 @@ static int __init davinci_rtc_probe(struct platform_device *pdev)
562fail4: 562fail4:
563 rtc_device_unregister(davinci_rtc->rtc); 563 rtc_device_unregister(davinci_rtc->rtc);
564fail3: 564fail3:
565 platform_set_drvdata(pdev, NULL);
565 iounmap(davinci_rtc->base); 566 iounmap(davinci_rtc->base);
566fail2: 567fail2:
567 release_mem_region(davinci_rtc->pbase, davinci_rtc->base_size); 568 release_mem_region(davinci_rtc->pbase, davinci_rtc->base_size);
diff --git a/drivers/rtc/rtc-ds1286.c b/drivers/rtc/rtc-ds1286.c
index 60ce69600828..47e681df31e2 100644
--- a/drivers/rtc/rtc-ds1286.c
+++ b/drivers/rtc/rtc-ds1286.c
@@ -355,6 +355,7 @@ static int __devinit ds1286_probe(struct platform_device *pdev)
355 goto out; 355 goto out;
356 } 356 }
357 spin_lock_init(&priv->lock); 357 spin_lock_init(&priv->lock);
358 platform_set_drvdata(pdev, priv);
358 rtc = rtc_device_register("ds1286", &pdev->dev, 359 rtc = rtc_device_register("ds1286", &pdev->dev,
359 &ds1286_ops, THIS_MODULE); 360 &ds1286_ops, THIS_MODULE);
360 if (IS_ERR(rtc)) { 361 if (IS_ERR(rtc)) {
@@ -362,7 +363,6 @@ static int __devinit ds1286_probe(struct platform_device *pdev)
362 goto out; 363 goto out;
363 } 364 }
364 priv->rtc = rtc; 365 priv->rtc = rtc;
365 platform_set_drvdata(pdev, priv);
366 return 0; 366 return 0;
367 367
368out: 368out:
diff --git a/drivers/rtc/rtc-em3027.c b/drivers/rtc/rtc-em3027.c
new file mode 100644
index 000000000000..d8e1c2578553
--- /dev/null
+++ b/drivers/rtc/rtc-em3027.c
@@ -0,0 +1,161 @@
1/*
2 * An rtc/i2c driver for the EM Microelectronic EM3027
3 * Copyright 2011 CompuLab, Ltd.
4 *
5 * Author: Mike Rapoport <mike@compulab.co.il>
6 *
7 * Based on rtc-ds1672.c by Alessandro Zummo <a.zummo@towertech.it>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
14#include <linux/i2c.h>
15#include <linux/rtc.h>
16#include <linux/bcd.h>
17
18/* Registers */
19#define EM3027_REG_ON_OFF_CTRL 0x00
20#define EM3027_REG_IRQ_CTRL 0x01
21#define EM3027_REG_IRQ_FLAGS 0x02
22#define EM3027_REG_STATUS 0x03
23#define EM3027_REG_RST_CTRL 0x04
24
25#define EM3027_REG_WATCH_SEC 0x08
26#define EM3027_REG_WATCH_MIN 0x09
27#define EM3027_REG_WATCH_HOUR 0x0a
28#define EM3027_REG_WATCH_DATE 0x0b
29#define EM3027_REG_WATCH_DAY 0x0c
30#define EM3027_REG_WATCH_MON 0x0d
31#define EM3027_REG_WATCH_YEAR 0x0e
32
33#define EM3027_REG_ALARM_SEC 0x10
34#define EM3027_REG_ALARM_MIN 0x11
35#define EM3027_REG_ALARM_HOUR 0x12
36#define EM3027_REG_ALARM_DATE 0x13
37#define EM3027_REG_ALARM_DAY 0x14
38#define EM3027_REG_ALARM_MON 0x15
39#define EM3027_REG_ALARM_YEAR 0x16
40
41static struct i2c_driver em3027_driver;
42
43static int em3027_get_time(struct device *dev, struct rtc_time *tm)
44{
45 struct i2c_client *client = to_i2c_client(dev);
46
47 unsigned char addr = EM3027_REG_WATCH_SEC;
48 unsigned char buf[7];
49
50 struct i2c_msg msgs[] = {
51 {client->addr, 0, 1, &addr}, /* setup read addr */
52 {client->addr, I2C_M_RD, 7, buf}, /* read time/date */
53 };
54
55 /* read time/date registers */
56 if ((i2c_transfer(client->adapter, &msgs[0], 2)) != 2) {
57 dev_err(&client->dev, "%s: read error\n", __func__);
58 return -EIO;
59 }
60
61 tm->tm_sec = bcd2bin(buf[0]);
62 tm->tm_min = bcd2bin(buf[1]);
63 tm->tm_hour = bcd2bin(buf[2]);
64 tm->tm_mday = bcd2bin(buf[3]);
65 tm->tm_wday = bcd2bin(buf[4]);
66 tm->tm_mon = bcd2bin(buf[5]);
67 tm->tm_year = bcd2bin(buf[6]) + 100;
68
69 return 0;
70}
71
72static int em3027_set_time(struct device *dev, struct rtc_time *tm)
73{
74 struct i2c_client *client = to_i2c_client(dev);
75 unsigned char buf[8];
76
77 struct i2c_msg msg = {
78 client->addr, 0, 8, buf, /* write time/date */
79 };
80
81 buf[0] = EM3027_REG_WATCH_SEC;
82 buf[1] = bin2bcd(tm->tm_sec);
83 buf[2] = bin2bcd(tm->tm_min);
84 buf[3] = bin2bcd(tm->tm_hour);
85 buf[4] = bin2bcd(tm->tm_mday);
86 buf[5] = bin2bcd(tm->tm_wday);
87 buf[6] = bin2bcd(tm->tm_mon);
88 buf[7] = bin2bcd(tm->tm_year % 100);
89
90 /* write time/date registers */
91 if ((i2c_transfer(client->adapter, &msg, 1)) != 1) {
92 dev_err(&client->dev, "%s: write error\n", __func__);
93 return -EIO;
94 }
95
96 return 0;
97}
98
99static const struct rtc_class_ops em3027_rtc_ops = {
100 .read_time = em3027_get_time,
101 .set_time = em3027_set_time,
102};
103
104static int em3027_probe(struct i2c_client *client,
105 const struct i2c_device_id *id)
106{
107 struct rtc_device *rtc;
108
109 if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
110 return -ENODEV;
111
112 rtc = rtc_device_register(em3027_driver.driver.name, &client->dev,
113 &em3027_rtc_ops, THIS_MODULE);
114 if (IS_ERR(rtc))
115 return PTR_ERR(rtc);
116
117 i2c_set_clientdata(client, rtc);
118
119 return 0;
120}
121
122static int em3027_remove(struct i2c_client *client)
123{
124 struct rtc_device *rtc = i2c_get_clientdata(client);
125
126 if (rtc)
127 rtc_device_unregister(rtc);
128
129 return 0;
130}
131
132static struct i2c_device_id em3027_id[] = {
133 { "em3027", 0 },
134 { }
135};
136
137static struct i2c_driver em3027_driver = {
138 .driver = {
139 .name = "rtc-em3027",
140 },
141 .probe = &em3027_probe,
142 .remove = &em3027_remove,
143 .id_table = em3027_id,
144};
145
146static int __init em3027_init(void)
147{
148 return i2c_add_driver(&em3027_driver);
149}
150
151static void __exit em3027_exit(void)
152{
153 i2c_del_driver(&em3027_driver);
154}
155
156MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>");
157MODULE_DESCRIPTION("EM Microelectronic EM3027 RTC driver");
158MODULE_LICENSE("GPL");
159
160module_init(em3027_init);
161module_exit(em3027_exit);
diff --git a/drivers/rtc/rtc-ep93xx.c b/drivers/rtc/rtc-ep93xx.c
index 11ae64dcbf3c..335551d333b2 100644
--- a/drivers/rtc/rtc-ep93xx.c
+++ b/drivers/rtc/rtc-ep93xx.c
@@ -151,6 +151,7 @@ static int __init ep93xx_rtc_probe(struct platform_device *pdev)
151 return -ENXIO; 151 return -ENXIO;
152 152
153 pdev->dev.platform_data = ep93xx_rtc; 153 pdev->dev.platform_data = ep93xx_rtc;
154 platform_set_drvdata(pdev, rtc);
154 155
155 rtc = rtc_device_register(pdev->name, 156 rtc = rtc_device_register(pdev->name,
156 &pdev->dev, &ep93xx_rtc_ops, THIS_MODULE); 157 &pdev->dev, &ep93xx_rtc_ops, THIS_MODULE);
@@ -159,8 +160,6 @@ static int __init ep93xx_rtc_probe(struct platform_device *pdev)
159 goto exit; 160 goto exit;
160 } 161 }
161 162
162 platform_set_drvdata(pdev, rtc);
163
164 err = sysfs_create_group(&pdev->dev.kobj, &ep93xx_rtc_sysfs_files); 163 err = sysfs_create_group(&pdev->dev.kobj, &ep93xx_rtc_sysfs_files);
165 if (err) 164 if (err)
166 goto fail; 165 goto fail;
@@ -168,9 +167,9 @@ static int __init ep93xx_rtc_probe(struct platform_device *pdev)
168 return 0; 167 return 0;
169 168
170fail: 169fail:
171 platform_set_drvdata(pdev, NULL);
172 rtc_device_unregister(rtc); 170 rtc_device_unregister(rtc);
173exit: 171exit:
172 platform_set_drvdata(pdev, NULL);
174 pdev->dev.platform_data = NULL; 173 pdev->dev.platform_data = NULL;
175 return err; 174 return err;
176} 175}
diff --git a/drivers/rtc/rtc-m41t80.c b/drivers/rtc/rtc-m41t80.c
index 69fe664a2228..eda128fc1d38 100644
--- a/drivers/rtc/rtc-m41t80.c
+++ b/drivers/rtc/rtc-m41t80.c
@@ -783,6 +783,9 @@ static int m41t80_probe(struct i2c_client *client,
783 goto exit; 783 goto exit;
784 } 784 }
785 785
786 clientdata->features = id->driver_data;
787 i2c_set_clientdata(client, clientdata);
788
786 rtc = rtc_device_register(client->name, &client->dev, 789 rtc = rtc_device_register(client->name, &client->dev,
787 &m41t80_rtc_ops, THIS_MODULE); 790 &m41t80_rtc_ops, THIS_MODULE);
788 if (IS_ERR(rtc)) { 791 if (IS_ERR(rtc)) {
@@ -792,8 +795,6 @@ static int m41t80_probe(struct i2c_client *client,
792 } 795 }
793 796
794 clientdata->rtc = rtc; 797 clientdata->rtc = rtc;
795 clientdata->features = id->driver_data;
796 i2c_set_clientdata(client, clientdata);
797 798
798 /* Make sure HT (Halt Update) bit is cleared */ 799 /* Make sure HT (Halt Update) bit is cleared */
799 rc = i2c_smbus_read_byte_data(client, M41T80_REG_ALARM_HOUR); 800 rc = i2c_smbus_read_byte_data(client, M41T80_REG_ALARM_HOUR);
diff --git a/drivers/rtc/rtc-m41t93.c b/drivers/rtc/rtc-m41t93.c
new file mode 100644
index 000000000000..1a84b3e227d1
--- /dev/null
+++ b/drivers/rtc/rtc-m41t93.c
@@ -0,0 +1,225 @@
1/*
2 *
3 * Driver for ST M41T93 SPI RTC
4 *
5 * (c) 2010 Nikolaus Voss, Weinmann Medical GmbH
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/bcd.h>
13#include <linux/kernel.h>
14#include <linux/module.h>
15#include <linux/platform_device.h>
16#include <linux/rtc.h>
17#include <linux/spi/spi.h>
18
19#define M41T93_REG_SSEC 0
20#define M41T93_REG_ST_SEC 1
21#define M41T93_REG_MIN 2
22#define M41T93_REG_CENT_HOUR 3
23#define M41T93_REG_WDAY 4
24#define M41T93_REG_DAY 5
25#define M41T93_REG_MON 6
26#define M41T93_REG_YEAR 7
27
28
29#define M41T93_REG_ALM_HOUR_HT 0xc
30#define M41T93_REG_FLAGS 0xf
31
32#define M41T93_FLAG_ST (1 << 7)
33#define M41T93_FLAG_OF (1 << 2)
34#define M41T93_FLAG_BL (1 << 4)
35#define M41T93_FLAG_HT (1 << 6)
36
37static inline int m41t93_set_reg(struct spi_device *spi, u8 addr, u8 data)
38{
39 u8 buf[2];
40
41 /* MSB must be '1' to write */
42 buf[0] = addr | 0x80;
43 buf[1] = data;
44
45 return spi_write(spi, buf, sizeof(buf));
46}
47
48static int m41t93_set_time(struct device *dev, struct rtc_time *tm)
49{
50 struct spi_device *spi = to_spi_device(dev);
51 u8 buf[9] = {0x80}; /* write cmd + 8 data bytes */
52 u8 * const data = &buf[1]; /* ptr to first data byte */
53
54 dev_dbg(dev, "%s secs=%d, mins=%d, "
55 "hours=%d, mday=%d, mon=%d, year=%d, wday=%d\n",
56 "write", tm->tm_sec, tm->tm_min,
57 tm->tm_hour, tm->tm_mday,
58 tm->tm_mon, tm->tm_year, tm->tm_wday);
59
60 if (tm->tm_year < 100) {
61 dev_warn(&spi->dev, "unsupported date (before 2000-01-01).\n");
62 return -EINVAL;
63 }
64
65 data[M41T93_REG_SSEC] = 0;
66 data[M41T93_REG_ST_SEC] = bin2bcd(tm->tm_sec);
67 data[M41T93_REG_MIN] = bin2bcd(tm->tm_min);
68 data[M41T93_REG_CENT_HOUR] = bin2bcd(tm->tm_hour) |
69 ((tm->tm_year/100-1) << 6);
70 data[M41T93_REG_DAY] = bin2bcd(tm->tm_mday);
71 data[M41T93_REG_WDAY] = bin2bcd(tm->tm_wday + 1);
72 data[M41T93_REG_MON] = bin2bcd(tm->tm_mon + 1);
73 data[M41T93_REG_YEAR] = bin2bcd(tm->tm_year % 100);
74
75 return spi_write(spi, buf, sizeof(buf));
76}
77
78
79static int m41t93_get_time(struct device *dev, struct rtc_time *tm)
80{
81 struct spi_device *spi = to_spi_device(dev);
82 const u8 start_addr = 0;
83 u8 buf[8];
84 int century_after_1900;
85 int tmp;
86 int ret = 0;
87
88 /* Check status of clock. Two states must be considered:
89 1. halt bit (HT) is set: the clock is running but update of readout
90 registers has been disabled due to power failure. This is normal
91 case after poweron. Time is valid after resetting HT bit.
92 2. oscillator fail bit (OF) is set. Oscillator has be stopped and
93 time is invalid:
94 a) OF can be immeditely reset.
95 b) OF cannot be immediately reset: oscillator has to be restarted.
96 */
97 tmp = spi_w8r8(spi, M41T93_REG_ALM_HOUR_HT);
98 if (tmp < 0)
99 return tmp;
100
101 if (tmp & M41T93_FLAG_HT) {
102 dev_dbg(&spi->dev, "HT bit is set, reenable clock update.\n");
103 m41t93_set_reg(spi, M41T93_REG_ALM_HOUR_HT,
104 tmp & ~M41T93_FLAG_HT);
105 }
106
107 tmp = spi_w8r8(spi, M41T93_REG_FLAGS);
108 if (tmp < 0)
109 return tmp;
110
111 if (tmp & M41T93_FLAG_OF) {
112 ret = -EINVAL;
113 dev_warn(&spi->dev, "OF bit is set, resetting.\n");
114 m41t93_set_reg(spi, M41T93_REG_FLAGS, tmp & ~M41T93_FLAG_OF);
115
116 tmp = spi_w8r8(spi, M41T93_REG_FLAGS);
117 if (tmp < 0)
118 return tmp;
119 else if (tmp & M41T93_FLAG_OF) {
120 u8 reset_osc = buf[M41T93_REG_ST_SEC] | M41T93_FLAG_ST;
121
122 dev_warn(&spi->dev,
123 "OF bit is still set, kickstarting clock.\n");
124 m41t93_set_reg(spi, M41T93_REG_ST_SEC, reset_osc);
125 reset_osc &= ~M41T93_FLAG_ST;
126 m41t93_set_reg(spi, M41T93_REG_ST_SEC, reset_osc);
127 }
128 }
129
130 if (tmp & M41T93_FLAG_BL)
131 dev_warn(&spi->dev, "BL bit is set, replace battery.\n");
132
133 /* read actual time/date */
134 tmp = spi_write_then_read(spi, &start_addr, 1, buf, sizeof(buf));
135 if (tmp < 0)
136 return tmp;
137
138 tm->tm_sec = bcd2bin(buf[M41T93_REG_ST_SEC]);
139 tm->tm_min = bcd2bin(buf[M41T93_REG_MIN]);
140 tm->tm_hour = bcd2bin(buf[M41T93_REG_CENT_HOUR] & 0x3f);
141 tm->tm_mday = bcd2bin(buf[M41T93_REG_DAY]);
142 tm->tm_mon = bcd2bin(buf[M41T93_REG_MON]) - 1;
143 tm->tm_wday = bcd2bin(buf[M41T93_REG_WDAY] & 0x0f) - 1;
144
145 century_after_1900 = (buf[M41T93_REG_CENT_HOUR] >> 6) + 1;
146 tm->tm_year = bcd2bin(buf[M41T93_REG_YEAR]) + century_after_1900 * 100;
147
148 dev_dbg(dev, "%s secs=%d, mins=%d, "
149 "hours=%d, mday=%d, mon=%d, year=%d, wday=%d\n",
150 "read", tm->tm_sec, tm->tm_min,
151 tm->tm_hour, tm->tm_mday,
152 tm->tm_mon, tm->tm_year, tm->tm_wday);
153
154 return ret < 0 ? ret : rtc_valid_tm(tm);
155}
156
157
158static const struct rtc_class_ops m41t93_rtc_ops = {
159 .read_time = m41t93_get_time,
160 .set_time = m41t93_set_time,
161};
162
163static struct spi_driver m41t93_driver;
164
165static int __devinit m41t93_probe(struct spi_device *spi)
166{
167 struct rtc_device *rtc;
168 int res;
169
170 spi->bits_per_word = 8;
171 spi_setup(spi);
172
173 res = spi_w8r8(spi, M41T93_REG_WDAY);
174 if (res < 0 || (res & 0xf8) != 0) {
175 dev_err(&spi->dev, "not found 0x%x.\n", res);
176 return -ENODEV;
177 }
178
179 rtc = rtc_device_register(m41t93_driver.driver.name,
180 &spi->dev, &m41t93_rtc_ops, THIS_MODULE);
181 if (IS_ERR(rtc))
182 return PTR_ERR(rtc);
183
184 dev_set_drvdata(&spi->dev, rtc);
185
186 return 0;
187}
188
189
190static int __devexit m41t93_remove(struct spi_device *spi)
191{
192 struct rtc_device *rtc = platform_get_drvdata(spi);
193
194 if (rtc)
195 rtc_device_unregister(rtc);
196
197 return 0;
198}
199
200static struct spi_driver m41t93_driver = {
201 .driver = {
202 .name = "rtc-m41t93",
203 .bus = &spi_bus_type,
204 .owner = THIS_MODULE,
205 },
206 .probe = m41t93_probe,
207 .remove = __devexit_p(m41t93_remove),
208};
209
210static __init int m41t93_init(void)
211{
212 return spi_register_driver(&m41t93_driver);
213}
214module_init(m41t93_init);
215
216static __exit void m41t93_exit(void)
217{
218 spi_unregister_driver(&m41t93_driver);
219}
220module_exit(m41t93_exit);
221
222MODULE_AUTHOR("Nikolaus Voss <n.voss@weinmann.de>");
223MODULE_DESCRIPTION("Driver for ST M41T93 SPI RTC");
224MODULE_LICENSE("GPL");
225MODULE_ALIAS("spi:rtc-m41t93");
diff --git a/drivers/rtc/rtc-max8925.c b/drivers/rtc/rtc-max8925.c
index 174036dda786..3bc046f427e0 100644
--- a/drivers/rtc/rtc-max8925.c
+++ b/drivers/rtc/rtc-max8925.c
@@ -257,6 +257,10 @@ static int __devinit max8925_rtc_probe(struct platform_device *pdev)
257 goto out_irq; 257 goto out_irq;
258 } 258 }
259 259
260 dev_set_drvdata(&pdev->dev, info);
261 /* XXX - isn't this redundant? */
262 platform_set_drvdata(pdev, info);
263
260 info->rtc_dev = rtc_device_register("max8925-rtc", &pdev->dev, 264 info->rtc_dev = rtc_device_register("max8925-rtc", &pdev->dev,
261 &max8925_rtc_ops, THIS_MODULE); 265 &max8925_rtc_ops, THIS_MODULE);
262 ret = PTR_ERR(info->rtc_dev); 266 ret = PTR_ERR(info->rtc_dev);
@@ -265,11 +269,9 @@ static int __devinit max8925_rtc_probe(struct platform_device *pdev)
265 goto out_rtc; 269 goto out_rtc;
266 } 270 }
267 271
268 dev_set_drvdata(&pdev->dev, info);
269 platform_set_drvdata(pdev, info);
270
271 return 0; 272 return 0;
272out_rtc: 273out_rtc:
274 platform_set_drvdata(pdev, NULL);
273 free_irq(chip->irq_base + MAX8925_IRQ_RTC_ALARM0, info); 275 free_irq(chip->irq_base + MAX8925_IRQ_RTC_ALARM0, info);
274out_irq: 276out_irq:
275 kfree(info); 277 kfree(info);
diff --git a/drivers/rtc/rtc-max8998.c b/drivers/rtc/rtc-max8998.c
index 3f7bc6b9fefa..2e48aa604273 100644
--- a/drivers/rtc/rtc-max8998.c
+++ b/drivers/rtc/rtc-max8998.c
@@ -265,6 +265,8 @@ static int __devinit max8998_rtc_probe(struct platform_device *pdev)
265 info->rtc = max8998->rtc; 265 info->rtc = max8998->rtc;
266 info->irq = max8998->irq_base + MAX8998_IRQ_ALARM0; 266 info->irq = max8998->irq_base + MAX8998_IRQ_ALARM0;
267 267
268 platform_set_drvdata(pdev, info);
269
268 info->rtc_dev = rtc_device_register("max8998-rtc", &pdev->dev, 270 info->rtc_dev = rtc_device_register("max8998-rtc", &pdev->dev,
269 &max8998_rtc_ops, THIS_MODULE); 271 &max8998_rtc_ops, THIS_MODULE);
270 272
@@ -274,8 +276,6 @@ static int __devinit max8998_rtc_probe(struct platform_device *pdev)
274 goto out_rtc; 276 goto out_rtc;
275 } 277 }
276 278
277 platform_set_drvdata(pdev, info);
278
279 ret = request_threaded_irq(info->irq, NULL, max8998_rtc_alarm_irq, 0, 279 ret = request_threaded_irq(info->irq, NULL, max8998_rtc_alarm_irq, 0,
280 "rtc-alarm0", info); 280 "rtc-alarm0", info);
281 281
@@ -293,6 +293,7 @@ static int __devinit max8998_rtc_probe(struct platform_device *pdev)
293 return 0; 293 return 0;
294 294
295out_rtc: 295out_rtc:
296 platform_set_drvdata(pdev, NULL);
296 kfree(info); 297 kfree(info);
297 return ret; 298 return ret;
298} 299}
diff --git a/drivers/rtc/rtc-mc13xxx.c b/drivers/rtc/rtc-mc13xxx.c
index c42006469559..a1a278bc340d 100644
--- a/drivers/rtc/rtc-mc13xxx.c
+++ b/drivers/rtc/rtc-mc13xxx.c
@@ -349,11 +349,15 @@ static int __devinit mc13xxx_rtc_probe(struct platform_device *pdev)
349 if (ret) 349 if (ret)
350 goto err_alarm_irq_request; 350 goto err_alarm_irq_request;
351 351
352 mc13xxx_unlock(mc13xxx);
353
352 priv->rtc = rtc_device_register(pdev->name, 354 priv->rtc = rtc_device_register(pdev->name,
353 &pdev->dev, &mc13xxx_rtc_ops, THIS_MODULE); 355 &pdev->dev, &mc13xxx_rtc_ops, THIS_MODULE);
354 if (IS_ERR(priv->rtc)) { 356 if (IS_ERR(priv->rtc)) {
355 ret = PTR_ERR(priv->rtc); 357 ret = PTR_ERR(priv->rtc);
356 358
359 mc13xxx_lock(mc13xxx);
360
357 mc13xxx_irq_free(mc13xxx, MC13XXX_IRQ_TODA, priv); 361 mc13xxx_irq_free(mc13xxx, MC13XXX_IRQ_TODA, priv);
358err_alarm_irq_request: 362err_alarm_irq_request:
359 363
@@ -365,12 +369,12 @@ err_reset_irq_status:
365 mc13xxx_irq_free(mc13xxx, MC13XXX_IRQ_RTCRST, priv); 369 mc13xxx_irq_free(mc13xxx, MC13XXX_IRQ_RTCRST, priv);
366err_reset_irq_request: 370err_reset_irq_request:
367 371
372 mc13xxx_unlock(mc13xxx);
373
368 platform_set_drvdata(pdev, NULL); 374 platform_set_drvdata(pdev, NULL);
369 kfree(priv); 375 kfree(priv);
370 } 376 }
371 377
372 mc13xxx_unlock(mc13xxx);
373
374 return ret; 378 return ret;
375} 379}
376 380
@@ -401,6 +405,7 @@ const struct platform_device_id mc13xxx_rtc_idtable[] = {
401 }, { 405 }, {
402 .name = "mc13892-rtc", 406 .name = "mc13892-rtc",
403 }, 407 },
408 { }
404}; 409};
405 410
406static struct platform_driver mc13xxx_rtc_driver = { 411static struct platform_driver mc13xxx_rtc_driver = {
diff --git a/drivers/rtc/rtc-mrst.c b/drivers/rtc/rtc-mrst.c
index b2f096871a97..0cec5650d56a 100644
--- a/drivers/rtc/rtc-mrst.c
+++ b/drivers/rtc/rtc-mrst.c
@@ -380,7 +380,7 @@ cleanup1:
380cleanup0: 380cleanup0:
381 dev_set_drvdata(dev, NULL); 381 dev_set_drvdata(dev, NULL);
382 mrst_rtc.dev = NULL; 382 mrst_rtc.dev = NULL;
383 release_region(iomem->start, iomem->end + 1 - iomem->start); 383 release_mem_region(iomem->start, resource_size(iomem));
384 dev_err(dev, "rtc-mrst: unable to initialise\n"); 384 dev_err(dev, "rtc-mrst: unable to initialise\n");
385 return retval; 385 return retval;
386} 386}
@@ -406,7 +406,7 @@ static void __devexit rtc_mrst_do_remove(struct device *dev)
406 mrst->rtc = NULL; 406 mrst->rtc = NULL;
407 407
408 iomem = mrst->iomem; 408 iomem = mrst->iomem;
409 release_region(iomem->start, iomem->end + 1 - iomem->start); 409 release_mem_region(iomem->start, resource_size(iomem));
410 mrst->iomem = NULL; 410 mrst->iomem = NULL;
411 411
412 mrst->dev = NULL; 412 mrst->dev = NULL;
diff --git a/drivers/rtc/rtc-msm6242.c b/drivers/rtc/rtc-msm6242.c
index 67820626e18f..fcb113c11122 100644
--- a/drivers/rtc/rtc-msm6242.c
+++ b/drivers/rtc/rtc-msm6242.c
@@ -214,6 +214,7 @@ static int __init msm6242_rtc_probe(struct platform_device *dev)
214 error = -ENOMEM; 214 error = -ENOMEM;
215 goto out_free_priv; 215 goto out_free_priv;
216 } 216 }
217 platform_set_drvdata(dev, priv);
217 218
218 rtc = rtc_device_register("rtc-msm6242", &dev->dev, &msm6242_rtc_ops, 219 rtc = rtc_device_register("rtc-msm6242", &dev->dev, &msm6242_rtc_ops,
219 THIS_MODULE); 220 THIS_MODULE);
@@ -223,10 +224,10 @@ static int __init msm6242_rtc_probe(struct platform_device *dev)
223 } 224 }
224 225
225 priv->rtc = rtc; 226 priv->rtc = rtc;
226 platform_set_drvdata(dev, priv);
227 return 0; 227 return 0;
228 228
229out_unmap: 229out_unmap:
230 platform_set_drvdata(dev, NULL);
230 iounmap(priv->regs); 231 iounmap(priv->regs);
231out_free_priv: 232out_free_priv:
232 kfree(priv); 233 kfree(priv);
diff --git a/drivers/rtc/rtc-mxc.c b/drivers/rtc/rtc-mxc.c
index 826ab64a8fa9..39e41fbdf08b 100644
--- a/drivers/rtc/rtc-mxc.c
+++ b/drivers/rtc/rtc-mxc.c
@@ -55,12 +55,6 @@ static const u32 PIE_BIT_DEF[MAX_PIE_NUM][2] = {
55 { MAX_PIE_FREQ, RTC_SAM7_BIT }, 55 { MAX_PIE_FREQ, RTC_SAM7_BIT },
56}; 56};
57 57
58/* Those are the bits from a classic RTC we want to mimic */
59#define RTC_IRQF 0x80 /* any of the following 3 is active */
60#define RTC_PF 0x40 /* Periodic interrupt */
61#define RTC_AF 0x20 /* Alarm interrupt */
62#define RTC_UF 0x10 /* Update interrupt for 1Hz RTC */
63
64#define MXC_RTC_TIME 0 58#define MXC_RTC_TIME 0
65#define MXC_RTC_ALARM 1 59#define MXC_RTC_ALARM 1
66 60
@@ -418,14 +412,6 @@ static int __init mxc_rtc_probe(struct platform_device *pdev)
418 goto exit_put_clk; 412 goto exit_put_clk;
419 } 413 }
420 414
421 rtc = rtc_device_register(pdev->name, &pdev->dev, &mxc_rtc_ops,
422 THIS_MODULE);
423 if (IS_ERR(rtc)) {
424 ret = PTR_ERR(rtc);
425 goto exit_put_clk;
426 }
427
428 pdata->rtc = rtc;
429 platform_set_drvdata(pdev, pdata); 415 platform_set_drvdata(pdev, pdata);
430 416
431 /* Configure and enable the RTC */ 417 /* Configure and enable the RTC */
@@ -438,8 +424,19 @@ static int __init mxc_rtc_probe(struct platform_device *pdev)
438 pdata->irq = -1; 424 pdata->irq = -1;
439 } 425 }
440 426
427 rtc = rtc_device_register(pdev->name, &pdev->dev, &mxc_rtc_ops,
428 THIS_MODULE);
429 if (IS_ERR(rtc)) {
430 ret = PTR_ERR(rtc);
431 goto exit_clr_drvdata;
432 }
433
434 pdata->rtc = rtc;
435
441 return 0; 436 return 0;
442 437
438exit_clr_drvdata:
439 platform_set_drvdata(pdev, NULL);
443exit_put_clk: 440exit_put_clk:
444 clk_disable(pdata->clk); 441 clk_disable(pdata->clk);
445 clk_put(pdata->clk); 442 clk_put(pdata->clk);
diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c
index de0dd7b1f146..bcae8dd41496 100644
--- a/drivers/rtc/rtc-omap.c
+++ b/drivers/rtc/rtc-omap.c
@@ -394,7 +394,7 @@ static int __init omap_rtc_probe(struct platform_device *pdev)
394 return 0; 394 return 0;
395 395
396fail2: 396fail2:
397 free_irq(omap_rtc_timer, NULL); 397 free_irq(omap_rtc_timer, rtc);
398fail1: 398fail1:
399 rtc_device_unregister(rtc); 399 rtc_device_unregister(rtc);
400fail0: 400fail0:
diff --git a/drivers/rtc/rtc-pcap.c b/drivers/rtc/rtc-pcap.c
index a633abc42896..cd4f198cc2ef 100644
--- a/drivers/rtc/rtc-pcap.c
+++ b/drivers/rtc/rtc-pcap.c
@@ -151,6 +151,8 @@ static int __devinit pcap_rtc_probe(struct platform_device *pdev)
151 151
152 pcap_rtc->pcap = dev_get_drvdata(pdev->dev.parent); 152 pcap_rtc->pcap = dev_get_drvdata(pdev->dev.parent);
153 153
154 platform_set_drvdata(pdev, pcap_rtc);
155
154 pcap_rtc->rtc = rtc_device_register("pcap", &pdev->dev, 156 pcap_rtc->rtc = rtc_device_register("pcap", &pdev->dev,
155 &pcap_rtc_ops, THIS_MODULE); 157 &pcap_rtc_ops, THIS_MODULE);
156 if (IS_ERR(pcap_rtc->rtc)) { 158 if (IS_ERR(pcap_rtc->rtc)) {
@@ -158,7 +160,6 @@ static int __devinit pcap_rtc_probe(struct platform_device *pdev)
158 goto fail_rtc; 160 goto fail_rtc;
159 } 161 }
160 162
161 platform_set_drvdata(pdev, pcap_rtc);
162 163
163 timer_irq = pcap_to_irq(pcap_rtc->pcap, PCAP_IRQ_1HZ); 164 timer_irq = pcap_to_irq(pcap_rtc->pcap, PCAP_IRQ_1HZ);
164 alarm_irq = pcap_to_irq(pcap_rtc->pcap, PCAP_IRQ_TODA); 165 alarm_irq = pcap_to_irq(pcap_rtc->pcap, PCAP_IRQ_TODA);
@@ -177,6 +178,7 @@ fail_alarm:
177fail_timer: 178fail_timer:
178 rtc_device_unregister(pcap_rtc->rtc); 179 rtc_device_unregister(pcap_rtc->rtc);
179fail_rtc: 180fail_rtc:
181 platform_set_drvdata(pdev, NULL);
180 kfree(pcap_rtc); 182 kfree(pcap_rtc);
181 return err; 183 return err;
182} 184}
diff --git a/drivers/rtc/rtc-pcf50633.c b/drivers/rtc/rtc-pcf50633.c
index f90c574f9d05..0c423892923c 100644
--- a/drivers/rtc/rtc-pcf50633.c
+++ b/drivers/rtc/rtc-pcf50633.c
@@ -58,7 +58,6 @@ struct pcf50633_time {
58 58
59struct pcf50633_rtc { 59struct pcf50633_rtc {
60 int alarm_enabled; 60 int alarm_enabled;
61 int second_enabled;
62 int alarm_pending; 61 int alarm_pending;
63 62
64 struct pcf50633 *pcf; 63 struct pcf50633 *pcf;
@@ -143,7 +142,7 @@ static int pcf50633_rtc_set_time(struct device *dev, struct rtc_time *tm)
143{ 142{
144 struct pcf50633_rtc *rtc; 143 struct pcf50633_rtc *rtc;
145 struct pcf50633_time pcf_tm; 144 struct pcf50633_time pcf_tm;
146 int second_masked, alarm_masked, ret = 0; 145 int alarm_masked, ret = 0;
147 146
148 rtc = dev_get_drvdata(dev); 147 rtc = dev_get_drvdata(dev);
149 148
@@ -162,11 +161,8 @@ static int pcf50633_rtc_set_time(struct device *dev, struct rtc_time *tm)
162 pcf_tm.time[PCF50633_TI_SEC]); 161 pcf_tm.time[PCF50633_TI_SEC]);
163 162
164 163
165 second_masked = pcf50633_irq_mask_get(rtc->pcf, PCF50633_IRQ_SECOND);
166 alarm_masked = pcf50633_irq_mask_get(rtc->pcf, PCF50633_IRQ_ALARM); 164 alarm_masked = pcf50633_irq_mask_get(rtc->pcf, PCF50633_IRQ_ALARM);
167 165
168 if (!second_masked)
169 pcf50633_irq_mask(rtc->pcf, PCF50633_IRQ_SECOND);
170 if (!alarm_masked) 166 if (!alarm_masked)
171 pcf50633_irq_mask(rtc->pcf, PCF50633_IRQ_ALARM); 167 pcf50633_irq_mask(rtc->pcf, PCF50633_IRQ_ALARM);
172 168
@@ -175,8 +171,6 @@ static int pcf50633_rtc_set_time(struct device *dev, struct rtc_time *tm)
175 PCF50633_TI_EXTENT, 171 PCF50633_TI_EXTENT,
176 &pcf_tm.time[0]); 172 &pcf_tm.time[0]);
177 173
178 if (!second_masked)
179 pcf50633_irq_unmask(rtc->pcf, PCF50633_IRQ_SECOND);
180 if (!alarm_masked) 174 if (!alarm_masked)
181 pcf50633_irq_unmask(rtc->pcf, PCF50633_IRQ_ALARM); 175 pcf50633_irq_unmask(rtc->pcf, PCF50633_IRQ_ALARM);
182 176
@@ -250,15 +244,8 @@ static void pcf50633_rtc_irq(int irq, void *data)
250{ 244{
251 struct pcf50633_rtc *rtc = data; 245 struct pcf50633_rtc *rtc = data;
252 246
253 switch (irq) { 247 rtc_update_irq(rtc->rtc_dev, 1, RTC_AF | RTC_IRQF);
254 case PCF50633_IRQ_ALARM: 248 rtc->alarm_pending = 1;
255 rtc_update_irq(rtc->rtc_dev, 1, RTC_AF | RTC_IRQF);
256 rtc->alarm_pending = 1;
257 break;
258 case PCF50633_IRQ_SECOND:
259 rtc_update_irq(rtc->rtc_dev, 1, RTC_UF | RTC_IRQF);
260 break;
261 }
262} 249}
263 250
264static int __devinit pcf50633_rtc_probe(struct platform_device *pdev) 251static int __devinit pcf50633_rtc_probe(struct platform_device *pdev)
@@ -282,9 +269,6 @@ static int __devinit pcf50633_rtc_probe(struct platform_device *pdev)
282 269
283 pcf50633_register_irq(rtc->pcf, PCF50633_IRQ_ALARM, 270 pcf50633_register_irq(rtc->pcf, PCF50633_IRQ_ALARM,
284 pcf50633_rtc_irq, rtc); 271 pcf50633_rtc_irq, rtc);
285 pcf50633_register_irq(rtc->pcf, PCF50633_IRQ_SECOND,
286 pcf50633_rtc_irq, rtc);
287
288 return 0; 272 return 0;
289} 273}
290 274
@@ -295,7 +279,6 @@ static int __devexit pcf50633_rtc_remove(struct platform_device *pdev)
295 rtc = platform_get_drvdata(pdev); 279 rtc = platform_get_drvdata(pdev);
296 280
297 pcf50633_free_irq(rtc->pcf, PCF50633_IRQ_ALARM); 281 pcf50633_free_irq(rtc->pcf, PCF50633_IRQ_ALARM);
298 pcf50633_free_irq(rtc->pcf, PCF50633_IRQ_SECOND);
299 282
300 rtc_device_unregister(rtc->rtc_dev); 283 rtc_device_unregister(rtc->rtc_dev);
301 kfree(rtc); 284 kfree(rtc);
diff --git a/drivers/rtc/rtc-rp5c01.c b/drivers/rtc/rtc-rp5c01.c
index 694da39b6dd2..359da6d020b9 100644
--- a/drivers/rtc/rtc-rp5c01.c
+++ b/drivers/rtc/rtc-rp5c01.c
@@ -249,15 +249,15 @@ static int __init rp5c01_rtc_probe(struct platform_device *dev)
249 249
250 spin_lock_init(&priv->lock); 250 spin_lock_init(&priv->lock);
251 251
252 platform_set_drvdata(dev, priv);
253
252 rtc = rtc_device_register("rtc-rp5c01", &dev->dev, &rp5c01_rtc_ops, 254 rtc = rtc_device_register("rtc-rp5c01", &dev->dev, &rp5c01_rtc_ops,
253 THIS_MODULE); 255 THIS_MODULE);
254 if (IS_ERR(rtc)) { 256 if (IS_ERR(rtc)) {
255 error = PTR_ERR(rtc); 257 error = PTR_ERR(rtc);
256 goto out_unmap; 258 goto out_unmap;
257 } 259 }
258
259 priv->rtc = rtc; 260 priv->rtc = rtc;
260 platform_set_drvdata(dev, priv);
261 261
262 error = sysfs_create_bin_file(&dev->dev.kobj, &priv->nvram_attr); 262 error = sysfs_create_bin_file(&dev->dev.kobj, &priv->nvram_attr);
263 if (error) 263 if (error)
@@ -268,6 +268,7 @@ static int __init rp5c01_rtc_probe(struct platform_device *dev)
268out_unregister: 268out_unregister:
269 rtc_device_unregister(rtc); 269 rtc_device_unregister(rtc);
270out_unmap: 270out_unmap:
271 platform_set_drvdata(dev, NULL);
271 iounmap(priv->regs); 272 iounmap(priv->regs);
272out_free_priv: 273out_free_priv:
273 kfree(priv); 274 kfree(priv);
diff --git a/drivers/rtc/rtc-rv3029c2.c b/drivers/rtc/rtc-rv3029c2.c
new file mode 100644
index 000000000000..ea09ff211dc6
--- /dev/null
+++ b/drivers/rtc/rtc-rv3029c2.c
@@ -0,0 +1,454 @@
1/*
2 * Micro Crystal RV-3029C2 rtc class driver
3 *
4 * Author: Gregory Hermant <gregory.hermant@calao-systems.com>
5 *
6 * based on previously existing rtc class drivers
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 * NOTE: Currently this driver only supports the bare minimum for read
13 * and write the RTC and alarms. The extra features provided by this chip
14 * (trickle charger, eeprom, T° compensation) are unavailable.
15 */
16
17#include <linux/module.h>
18#include <linux/i2c.h>
19#include <linux/bcd.h>
20#include <linux/rtc.h>
21
22/* Register map */
23/* control section */
24#define RV3029C2_ONOFF_CTRL 0x00
25#define RV3029C2_IRQ_CTRL 0x01
26#define RV3029C2_IRQ_CTRL_AIE (1 << 0)
27#define RV3029C2_IRQ_FLAGS 0x02
28#define RV3029C2_IRQ_FLAGS_AF (1 << 0)
29#define RV3029C2_STATUS 0x03
30#define RV3029C2_STATUS_VLOW1 (1 << 2)
31#define RV3029C2_STATUS_VLOW2 (1 << 3)
32#define RV3029C2_STATUS_SR (1 << 4)
33#define RV3029C2_STATUS_PON (1 << 5)
34#define RV3029C2_STATUS_EEBUSY (1 << 7)
35#define RV3029C2_RST_CTRL 0x04
36#define RV3029C2_CONTROL_SECTION_LEN 0x05
37
38/* watch section */
39#define RV3029C2_W_SEC 0x08
40#define RV3029C2_W_MINUTES 0x09
41#define RV3029C2_W_HOURS 0x0A
42#define RV3029C2_REG_HR_12_24 (1<<6) /* 24h/12h mode */
43#define RV3029C2_REG_HR_PM (1<<5) /* PM/AM bit in 12h mode */
44#define RV3029C2_W_DATE 0x0B
45#define RV3029C2_W_DAYS 0x0C
46#define RV3029C2_W_MONTHS 0x0D
47#define RV3029C2_W_YEARS 0x0E
48#define RV3029C2_WATCH_SECTION_LEN 0x07
49
50/* alarm section */
51#define RV3029C2_A_SC 0x10
52#define RV3029C2_A_MN 0x11
53#define RV3029C2_A_HR 0x12
54#define RV3029C2_A_DT 0x13
55#define RV3029C2_A_DW 0x14
56#define RV3029C2_A_MO 0x15
57#define RV3029C2_A_YR 0x16
58#define RV3029C2_ALARM_SECTION_LEN 0x07
59
60/* timer section */
61#define RV3029C2_TIMER_LOW 0x18
62#define RV3029C2_TIMER_HIGH 0x19
63
64/* temperature section */
65#define RV3029C2_TEMP_PAGE 0x20
66
67/* eeprom data section */
68#define RV3029C2_E2P_EEDATA1 0x28
69#define RV3029C2_E2P_EEDATA2 0x29
70
71/* eeprom control section */
72#define RV3029C2_CONTROL_E2P_EECTRL 0x30
73#define RV3029C2_TRICKLE_1K (1<<0) /* 1K resistance */
74#define RV3029C2_TRICKLE_5K (1<<1) /* 5K resistance */
75#define RV3029C2_TRICKLE_20K (1<<2) /* 20K resistance */
76#define RV3029C2_TRICKLE_80K (1<<3) /* 80K resistance */
77#define RV3029C2_CONTROL_E2P_XTALOFFSET 0x31
78#define RV3029C2_CONTROL_E2P_QCOEF 0x32
79#define RV3029C2_CONTROL_E2P_TURNOVER 0x33
80
81/* user ram section */
82#define RV3029C2_USR1_RAM_PAGE 0x38
83#define RV3029C2_USR1_SECTION_LEN 0x04
84#define RV3029C2_USR2_RAM_PAGE 0x3C
85#define RV3029C2_USR2_SECTION_LEN 0x04
86
87static int
88rv3029c2_i2c_read_regs(struct i2c_client *client, u8 reg, u8 *buf,
89 unsigned len)
90{
91 int ret;
92
93 if ((reg > RV3029C2_USR1_RAM_PAGE + 7) ||
94 (reg + len > RV3029C2_USR1_RAM_PAGE + 8))
95 return -EINVAL;
96
97 ret = i2c_smbus_read_i2c_block_data(client, reg, len, buf);
98 if (ret < 0)
99 return ret;
100 if (ret < len)
101 return -EIO;
102 return 0;
103}
104
105static int
106rv3029c2_i2c_write_regs(struct i2c_client *client, u8 reg, u8 const buf[],
107 unsigned len)
108{
109 if ((reg > RV3029C2_USR1_RAM_PAGE + 7) ||
110 (reg + len > RV3029C2_USR1_RAM_PAGE + 8))
111 return -EINVAL;
112
113 return i2c_smbus_write_i2c_block_data(client, reg, len, buf);
114}
115
116static int
117rv3029c2_i2c_get_sr(struct i2c_client *client, u8 *buf)
118{
119 int ret = rv3029c2_i2c_read_regs(client, RV3029C2_STATUS, buf, 1);
120
121 if (ret < 0)
122 return -EIO;
123 dev_dbg(&client->dev, "status = 0x%.2x (%d)\n", buf[0], buf[0]);
124 return 0;
125}
126
127static int
128rv3029c2_i2c_set_sr(struct i2c_client *client, u8 val)
129{
130 u8 buf[1];
131 int sr;
132
133 buf[0] = val;
134 sr = rv3029c2_i2c_write_regs(client, RV3029C2_STATUS, buf, 1);
135 dev_dbg(&client->dev, "status = 0x%.2x (%d)\n", buf[0], buf[0]);
136 if (sr < 0)
137 return -EIO;
138 return 0;
139}
140
141static int
142rv3029c2_i2c_read_time(struct i2c_client *client, struct rtc_time *tm)
143{
144 u8 buf[1];
145 int ret;
146 u8 regs[RV3029C2_WATCH_SECTION_LEN] = { 0, };
147
148 ret = rv3029c2_i2c_get_sr(client, buf);
149 if (ret < 0) {
150 dev_err(&client->dev, "%s: reading SR failed\n", __func__);
151 return -EIO;
152 }
153
154 ret = rv3029c2_i2c_read_regs(client, RV3029C2_W_SEC , regs,
155 RV3029C2_WATCH_SECTION_LEN);
156 if (ret < 0) {
157 dev_err(&client->dev, "%s: reading RTC section failed\n",
158 __func__);
159 return ret;
160 }
161
162 tm->tm_sec = bcd2bin(regs[RV3029C2_W_SEC-RV3029C2_W_SEC]);
163 tm->tm_min = bcd2bin(regs[RV3029C2_W_MINUTES-RV3029C2_W_SEC]);
164
165 /* HR field has a more complex interpretation */
166 {
167 const u8 _hr = regs[RV3029C2_W_HOURS-RV3029C2_W_SEC];
168 if (_hr & RV3029C2_REG_HR_12_24) {
169 /* 12h format */
170 tm->tm_hour = bcd2bin(_hr & 0x1f);
171 if (_hr & RV3029C2_REG_HR_PM) /* PM flag set */
172 tm->tm_hour += 12;
173 } else /* 24h format */
174 tm->tm_hour = bcd2bin(_hr & 0x3f);
175 }
176
177 tm->tm_mday = bcd2bin(regs[RV3029C2_W_DATE-RV3029C2_W_SEC]);
178 tm->tm_mon = bcd2bin(regs[RV3029C2_W_MONTHS-RV3029C2_W_SEC]) - 1;
179 tm->tm_year = bcd2bin(regs[RV3029C2_W_YEARS-RV3029C2_W_SEC]) + 100;
180 tm->tm_wday = bcd2bin(regs[RV3029C2_W_DAYS-RV3029C2_W_SEC]) - 1;
181
182 return 0;
183}
184
185static int rv3029c2_rtc_read_time(struct device *dev, struct rtc_time *tm)
186{
187 return rv3029c2_i2c_read_time(to_i2c_client(dev), tm);
188}
189
190static int
191rv3029c2_i2c_read_alarm(struct i2c_client *client, struct rtc_wkalrm *alarm)
192{
193 struct rtc_time *const tm = &alarm->time;
194 int ret;
195 u8 regs[8];
196
197 ret = rv3029c2_i2c_get_sr(client, regs);
198 if (ret < 0) {
199 dev_err(&client->dev, "%s: reading SR failed\n", __func__);
200 return -EIO;
201 }
202
203 ret = rv3029c2_i2c_read_regs(client, RV3029C2_A_SC, regs,
204 RV3029C2_ALARM_SECTION_LEN);
205
206 if (ret < 0) {
207 dev_err(&client->dev, "%s: reading alarm section failed\n",
208 __func__);
209 return ret;
210 }
211
212 tm->tm_sec = bcd2bin(regs[RV3029C2_A_SC-RV3029C2_A_SC] & 0x7f);
213 tm->tm_min = bcd2bin(regs[RV3029C2_A_MN-RV3029C2_A_SC] & 0x7f);
214 tm->tm_hour = bcd2bin(regs[RV3029C2_A_HR-RV3029C2_A_SC] & 0x3f);
215 tm->tm_mday = bcd2bin(regs[RV3029C2_A_DT-RV3029C2_A_SC] & 0x3f);
216 tm->tm_mon = bcd2bin(regs[RV3029C2_A_MO-RV3029C2_A_SC] & 0x1f) - 1;
217 tm->tm_year = bcd2bin(regs[RV3029C2_A_YR-RV3029C2_A_SC] & 0x7f) + 100;
218 tm->tm_wday = bcd2bin(regs[RV3029C2_A_DW-RV3029C2_A_SC] & 0x07) - 1;
219
220 return 0;
221}
222
223static int
224rv3029c2_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alarm)
225{
226 return rv3029c2_i2c_read_alarm(to_i2c_client(dev), alarm);
227}
228
229static int rv3029c2_rtc_i2c_alarm_set_irq(struct i2c_client *client,
230 int enable)
231{
232 int ret;
233 u8 buf[1];
234
235 /* enable AIE irq */
236 ret = rv3029c2_i2c_read_regs(client, RV3029C2_IRQ_CTRL, buf, 1);
237 if (ret < 0) {
238 dev_err(&client->dev, "can't read INT reg\n");
239 return ret;
240 }
241 if (enable)
242 buf[0] |= RV3029C2_IRQ_CTRL_AIE;
243 else
244 buf[0] &= ~RV3029C2_IRQ_CTRL_AIE;
245
246 ret = rv3029c2_i2c_write_regs(client, RV3029C2_IRQ_CTRL, buf, 1);
247 if (ret < 0) {
248 dev_err(&client->dev, "can't set INT reg\n");
249 return ret;
250 }
251
252 return 0;
253}
254
255static int rv3029c2_rtc_i2c_set_alarm(struct i2c_client *client,
256 struct rtc_wkalrm *alarm)
257{
258 struct rtc_time *const tm = &alarm->time;
259 int ret;
260 u8 regs[8];
261
262 /*
263 * The clock has an 8 bit wide bcd-coded register (they never learn)
264 * for the year. tm_year is an offset from 1900 and we are interested
265 * in the 2000-2099 range, so any value less than 100 is invalid.
266 */
267 if (tm->tm_year < 100)
268 return -EINVAL;
269
270 ret = rv3029c2_i2c_get_sr(client, regs);
271 if (ret < 0) {
272 dev_err(&client->dev, "%s: reading SR failed\n", __func__);
273 return -EIO;
274 }
275 regs[RV3029C2_A_SC-RV3029C2_A_SC] = bin2bcd(tm->tm_sec & 0x7f);
276 regs[RV3029C2_A_MN-RV3029C2_A_SC] = bin2bcd(tm->tm_min & 0x7f);
277 regs[RV3029C2_A_HR-RV3029C2_A_SC] = bin2bcd(tm->tm_hour & 0x3f);
278 regs[RV3029C2_A_DT-RV3029C2_A_SC] = bin2bcd(tm->tm_mday & 0x3f);
279 regs[RV3029C2_A_MO-RV3029C2_A_SC] = bin2bcd((tm->tm_mon & 0x1f) - 1);
280 regs[RV3029C2_A_DW-RV3029C2_A_SC] = bin2bcd((tm->tm_wday & 7) - 1);
281 regs[RV3029C2_A_YR-RV3029C2_A_SC] = bin2bcd((tm->tm_year & 0x7f) - 100);
282
283 ret = rv3029c2_i2c_write_regs(client, RV3029C2_A_SC, regs,
284 RV3029C2_ALARM_SECTION_LEN);
285 if (ret < 0)
286 return ret;
287
288 if (alarm->enabled) {
289 u8 buf[1];
290
291 /* clear AF flag */
292 ret = rv3029c2_i2c_read_regs(client, RV3029C2_IRQ_FLAGS,
293 buf, 1);
294 if (ret < 0) {
295 dev_err(&client->dev, "can't read alarm flag\n");
296 return ret;
297 }
298 buf[0] &= ~RV3029C2_IRQ_FLAGS_AF;
299 ret = rv3029c2_i2c_write_regs(client, RV3029C2_IRQ_FLAGS,
300 buf, 1);
301 if (ret < 0) {
302 dev_err(&client->dev, "can't set alarm flag\n");
303 return ret;
304 }
305 /* enable AIE irq */
306 ret = rv3029c2_rtc_i2c_alarm_set_irq(client, 1);
307 if (ret)
308 return ret;
309
310 dev_dbg(&client->dev, "alarm IRQ armed\n");
311 } else {
312 /* disable AIE irq */
313 ret = rv3029c2_rtc_i2c_alarm_set_irq(client, 1);
314 if (ret)
315 return ret;
316
317 dev_dbg(&client->dev, "alarm IRQ disabled\n");
318 }
319
320 return 0;
321}
322
323static int rv3029c2_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alarm)
324{
325 return rv3029c2_rtc_i2c_set_alarm(to_i2c_client(dev), alarm);
326}
327
328static int
329rv3029c2_i2c_set_time(struct i2c_client *client, struct rtc_time const *tm)
330{
331 u8 regs[8];
332 int ret;
333
334 /*
335 * The clock has an 8 bit wide bcd-coded register (they never learn)
336 * for the year. tm_year is an offset from 1900 and we are interested
337 * in the 2000-2099 range, so any value less than 100 is invalid.
338 */
339 if (tm->tm_year < 100)
340 return -EINVAL;
341
342 regs[RV3029C2_W_SEC-RV3029C2_W_SEC] = bin2bcd(tm->tm_sec);
343 regs[RV3029C2_W_MINUTES-RV3029C2_W_SEC] = bin2bcd(tm->tm_min);
344 regs[RV3029C2_W_HOURS-RV3029C2_W_SEC] = bin2bcd(tm->tm_hour);
345 regs[RV3029C2_W_DATE-RV3029C2_W_SEC] = bin2bcd(tm->tm_mday);
346 regs[RV3029C2_W_MONTHS-RV3029C2_W_SEC] = bin2bcd(tm->tm_mon+1);
347 regs[RV3029C2_W_DAYS-RV3029C2_W_SEC] = bin2bcd((tm->tm_wday & 7)+1);
348 regs[RV3029C2_W_YEARS-RV3029C2_W_SEC] = bin2bcd(tm->tm_year - 100);
349
350 ret = rv3029c2_i2c_write_regs(client, RV3029C2_W_SEC, regs,
351 RV3029C2_WATCH_SECTION_LEN);
352 if (ret < 0)
353 return ret;
354
355 ret = rv3029c2_i2c_get_sr(client, regs);
356 if (ret < 0) {
357 dev_err(&client->dev, "%s: reading SR failed\n", __func__);
358 return ret;
359 }
360 /* clear PON bit */
361 ret = rv3029c2_i2c_set_sr(client, (regs[0] & ~RV3029C2_STATUS_PON));
362 if (ret < 0) {
363 dev_err(&client->dev, "%s: reading SR failed\n", __func__);
364 return ret;
365 }
366
367 return 0;
368}
369
370static int rv3029c2_rtc_set_time(struct device *dev, struct rtc_time *tm)
371{
372 return rv3029c2_i2c_set_time(to_i2c_client(dev), tm);
373}
374
375static const struct rtc_class_ops rv3029c2_rtc_ops = {
376 .read_time = rv3029c2_rtc_read_time,
377 .set_time = rv3029c2_rtc_set_time,
378 .read_alarm = rv3029c2_rtc_read_alarm,
379 .set_alarm = rv3029c2_rtc_set_alarm,
380};
381
382static struct i2c_device_id rv3029c2_id[] = {
383 { "rv3029c2", 0 },
384 { }
385};
386MODULE_DEVICE_TABLE(i2c, rv3029c2_id);
387
388static int __devinit
389rv3029c2_probe(struct i2c_client *client, const struct i2c_device_id *id)
390{
391 struct rtc_device *rtc;
392 int rc = 0;
393 u8 buf[1];
394
395 if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_EMUL))
396 return -ENODEV;
397
398 rtc = rtc_device_register(client->name,
399 &client->dev, &rv3029c2_rtc_ops,
400 THIS_MODULE);
401
402 if (IS_ERR(rtc))
403 return PTR_ERR(rtc);
404
405 i2c_set_clientdata(client, rtc);
406
407 rc = rv3029c2_i2c_get_sr(client, buf);
408 if (rc < 0) {
409 dev_err(&client->dev, "reading status failed\n");
410 goto exit_unregister;
411 }
412
413 return 0;
414
415exit_unregister:
416 rtc_device_unregister(rtc);
417
418 return rc;
419}
420
421static int __devexit rv3029c2_remove(struct i2c_client *client)
422{
423 struct rtc_device *rtc = i2c_get_clientdata(client);
424
425 rtc_device_unregister(rtc);
426
427 return 0;
428}
429
430static struct i2c_driver rv3029c2_driver = {
431 .driver = {
432 .name = "rtc-rv3029c2",
433 },
434 .probe = rv3029c2_probe,
435 .remove = __devexit_p(rv3029c2_remove),
436 .id_table = rv3029c2_id,
437};
438
439static int __init rv3029c2_init(void)
440{
441 return i2c_add_driver(&rv3029c2_driver);
442}
443
444static void __exit rv3029c2_exit(void)
445{
446 i2c_del_driver(&rv3029c2_driver);
447}
448
449module_init(rv3029c2_init);
450module_exit(rv3029c2_exit);
451
452MODULE_AUTHOR("Gregory Hermant <gregory.hermant@calao-systems.com>");
453MODULE_DESCRIPTION("Micro Crystal RV3029C2 RTC driver");
454MODULE_LICENSE("GPL");
diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c
index 714964913e5e..16512ecae31a 100644
--- a/drivers/rtc/rtc-s3c.c
+++ b/drivers/rtc/rtc-s3c.c
@@ -46,6 +46,7 @@ static struct clk *rtc_clk;
46static void __iomem *s3c_rtc_base; 46static void __iomem *s3c_rtc_base;
47static int s3c_rtc_alarmno = NO_IRQ; 47static int s3c_rtc_alarmno = NO_IRQ;
48static int s3c_rtc_tickno = NO_IRQ; 48static int s3c_rtc_tickno = NO_IRQ;
49static bool wake_en;
49static enum s3c_cpu_type s3c_rtc_cpu_type; 50static enum s3c_cpu_type s3c_rtc_cpu_type;
50 51
51static DEFINE_SPINLOCK(s3c_rtc_pie_lock); 52static DEFINE_SPINLOCK(s3c_rtc_pie_lock);
@@ -336,7 +337,6 @@ static void s3c_rtc_release(struct device *dev)
336 337
337 /* do not clear AIE here, it may be needed for wake */ 338 /* do not clear AIE here, it may be needed for wake */
338 339
339 s3c_rtc_setpie(dev, 0);
340 free_irq(s3c_rtc_alarmno, rtc_dev); 340 free_irq(s3c_rtc_alarmno, rtc_dev);
341 free_irq(s3c_rtc_tickno, rtc_dev); 341 free_irq(s3c_rtc_tickno, rtc_dev);
342} 342}
@@ -408,7 +408,6 @@ static int __devexit s3c_rtc_remove(struct platform_device *dev)
408 platform_set_drvdata(dev, NULL); 408 platform_set_drvdata(dev, NULL);
409 rtc_device_unregister(rtc); 409 rtc_device_unregister(rtc);
410 410
411 s3c_rtc_setpie(&dev->dev, 0);
412 s3c_rtc_setaie(&dev->dev, 0); 411 s3c_rtc_setaie(&dev->dev, 0);
413 412
414 clk_disable(rtc_clk); 413 clk_disable(rtc_clk);
@@ -564,8 +563,12 @@ static int s3c_rtc_suspend(struct platform_device *pdev, pm_message_t state)
564 } 563 }
565 s3c_rtc_enable(pdev, 0); 564 s3c_rtc_enable(pdev, 0);
566 565
567 if (device_may_wakeup(&pdev->dev)) 566 if (device_may_wakeup(&pdev->dev) && !wake_en) {
568 enable_irq_wake(s3c_rtc_alarmno); 567 if (enable_irq_wake(s3c_rtc_alarmno) == 0)
568 wake_en = true;
569 else
570 dev_err(&pdev->dev, "enable_irq_wake failed\n");
571 }
569 572
570 return 0; 573 return 0;
571} 574}
@@ -581,8 +584,10 @@ static int s3c_rtc_resume(struct platform_device *pdev)
581 writew(tmp | ticnt_en_save, s3c_rtc_base + S3C2410_RTCCON); 584 writew(tmp | ticnt_en_save, s3c_rtc_base + S3C2410_RTCCON);
582 } 585 }
583 586
584 if (device_may_wakeup(&pdev->dev)) 587 if (device_may_wakeup(&pdev->dev) && wake_en) {
585 disable_irq_wake(s3c_rtc_alarmno); 588 disable_irq_wake(s3c_rtc_alarmno);
589 wake_en = false;
590 }
586 591
587 return 0; 592 return 0;
588} 593}
diff --git a/drivers/rtc/rtc-spear.c b/drivers/rtc/rtc-spear.c
new file mode 100644
index 000000000000..893bac2bb21b
--- /dev/null
+++ b/drivers/rtc/rtc-spear.c
@@ -0,0 +1,534 @@
1/*
2 * drivers/rtc/rtc-spear.c
3 *
4 * Copyright (C) 2010 ST Microelectronics
5 * Rajeev Kumar<rajeev-dlh.kumar@st.com>
6 *
7 * This file is licensed under the terms of the GNU General Public
8 * License version 2. This program is licensed "as is" without any
9 * warranty of any kind, whether express or implied.
10 */
11
12#include <linux/bcd.h>
13#include <linux/clk.h>
14#include <linux/delay.h>
15#include <linux/init.h>
16#include <linux/io.h>
17#include <linux/irq.h>
18#include <linux/module.h>
19#include <linux/platform_device.h>
20#include <linux/rtc.h>
21#include <linux/slab.h>
22#include <linux/spinlock.h>
23
24/* RTC registers */
25#define TIME_REG 0x00
26#define DATE_REG 0x04
27#define ALARM_TIME_REG 0x08
28#define ALARM_DATE_REG 0x0C
29#define CTRL_REG 0x10
30#define STATUS_REG 0x14
31
32/* TIME_REG & ALARM_TIME_REG */
33#define SECONDS_UNITS (0xf<<0) /* seconds units position */
34#define SECONDS_TENS (0x7<<4) /* seconds tens position */
35#define MINUTES_UNITS (0xf<<8) /* minutes units position */
36#define MINUTES_TENS (0x7<<12) /* minutes tens position */
37#define HOURS_UNITS (0xf<<16) /* hours units position */
38#define HOURS_TENS (0x3<<20) /* hours tens position */
39
40/* DATE_REG & ALARM_DATE_REG */
41#define DAYS_UNITS (0xf<<0) /* days units position */
42#define DAYS_TENS (0x3<<4) /* days tens position */
43#define MONTHS_UNITS (0xf<<8) /* months units position */
44#define MONTHS_TENS (0x1<<12) /* months tens position */
45#define YEARS_UNITS (0xf<<16) /* years units position */
46#define YEARS_TENS (0xf<<20) /* years tens position */
47#define YEARS_HUNDREDS (0xf<<24) /* years hundereds position */
48#define YEARS_MILLENIUMS (0xf<<28) /* years millenium position */
49
50/* MASK SHIFT TIME_REG & ALARM_TIME_REG*/
51#define SECOND_SHIFT 0x00 /* seconds units */
52#define MINUTE_SHIFT 0x08 /* minutes units position */
53#define HOUR_SHIFT 0x10 /* hours units position */
54#define MDAY_SHIFT 0x00 /* Month day shift */
55#define MONTH_SHIFT 0x08 /* Month shift */
56#define YEAR_SHIFT 0x10 /* Year shift */
57
58#define SECOND_MASK 0x7F
59#define MIN_MASK 0x7F
60#define HOUR_MASK 0x3F
61#define DAY_MASK 0x3F
62#define MONTH_MASK 0x7F
63#define YEAR_MASK 0xFFFF
64
65/* date reg equal to time reg, for debug only */
66#define TIME_BYP (1<<9)
67#define INT_ENABLE (1<<31) /* interrupt enable */
68
69/* STATUS_REG */
70#define CLK_UNCONNECTED (1<<0)
71#define PEND_WR_TIME (1<<2)
72#define PEND_WR_DATE (1<<3)
73#define LOST_WR_TIME (1<<4)
74#define LOST_WR_DATE (1<<5)
75#define RTC_INT_MASK (1<<31)
76#define STATUS_BUSY (PEND_WR_TIME | PEND_WR_DATE)
77#define STATUS_FAIL (LOST_WR_TIME | LOST_WR_DATE)
78
79struct spear_rtc_config {
80 struct clk *clk;
81 spinlock_t lock;
82 void __iomem *ioaddr;
83};
84
85static inline void spear_rtc_clear_interrupt(struct spear_rtc_config *config)
86{
87 unsigned int val;
88 unsigned long flags;
89
90 spin_lock_irqsave(&config->lock, flags);
91 val = readl(config->ioaddr + STATUS_REG);
92 val |= RTC_INT_MASK;
93 writel(val, config->ioaddr + STATUS_REG);
94 spin_unlock_irqrestore(&config->lock, flags);
95}
96
97static inline void spear_rtc_enable_interrupt(struct spear_rtc_config *config)
98{
99 unsigned int val;
100
101 val = readl(config->ioaddr + CTRL_REG);
102 if (!(val & INT_ENABLE)) {
103 spear_rtc_clear_interrupt(config);
104 val |= INT_ENABLE;
105 writel(val, config->ioaddr + CTRL_REG);
106 }
107}
108
109static inline void spear_rtc_disable_interrupt(struct spear_rtc_config *config)
110{
111 unsigned int val;
112
113 val = readl(config->ioaddr + CTRL_REG);
114 if (val & INT_ENABLE) {
115 val &= ~INT_ENABLE;
116 writel(val, config->ioaddr + CTRL_REG);
117 }
118}
119
120static inline int is_write_complete(struct spear_rtc_config *config)
121{
122 int ret = 0;
123 unsigned long flags;
124
125 spin_lock_irqsave(&config->lock, flags);
126 if ((readl(config->ioaddr + STATUS_REG)) & STATUS_FAIL)
127 ret = -EIO;
128 spin_unlock_irqrestore(&config->lock, flags);
129
130 return ret;
131}
132
133static void rtc_wait_not_busy(struct spear_rtc_config *config)
134{
135 int status, count = 0;
136 unsigned long flags;
137
138 /* Assuming BUSY may stay active for 80 msec) */
139 for (count = 0; count < 80; count++) {
140 spin_lock_irqsave(&config->lock, flags);
141 status = readl(config->ioaddr + STATUS_REG);
142 spin_unlock_irqrestore(&config->lock, flags);
143 if ((status & STATUS_BUSY) == 0)
144 break;
145 /* check status busy, after each msec */
146 msleep(1);
147 }
148}
149
150static irqreturn_t spear_rtc_irq(int irq, void *dev_id)
151{
152 struct rtc_device *rtc = (struct rtc_device *)dev_id;
153 struct spear_rtc_config *config = dev_get_drvdata(&rtc->dev);
154 unsigned long flags, events = 0;
155 unsigned int irq_data;
156
157 spin_lock_irqsave(&config->lock, flags);
158 irq_data = readl(config->ioaddr + STATUS_REG);
159 spin_unlock_irqrestore(&config->lock, flags);
160
161 if ((irq_data & RTC_INT_MASK)) {
162 spear_rtc_clear_interrupt(config);
163 events = RTC_IRQF | RTC_AF;
164 rtc_update_irq(rtc, 1, events);
165 return IRQ_HANDLED;
166 } else
167 return IRQ_NONE;
168
169}
170
171static int tm2bcd(struct rtc_time *tm)
172{
173 if (rtc_valid_tm(tm) != 0)
174 return -EINVAL;
175 tm->tm_sec = bin2bcd(tm->tm_sec);
176 tm->tm_min = bin2bcd(tm->tm_min);
177 tm->tm_hour = bin2bcd(tm->tm_hour);
178 tm->tm_mday = bin2bcd(tm->tm_mday);
179 tm->tm_mon = bin2bcd(tm->tm_mon + 1);
180 tm->tm_year = bin2bcd(tm->tm_year);
181
182 return 0;
183}
184
185static void bcd2tm(struct rtc_time *tm)
186{
187 tm->tm_sec = bcd2bin(tm->tm_sec);
188 tm->tm_min = bcd2bin(tm->tm_min);
189 tm->tm_hour = bcd2bin(tm->tm_hour);
190 tm->tm_mday = bcd2bin(tm->tm_mday);
191 tm->tm_mon = bcd2bin(tm->tm_mon) - 1;
192 /* epoch == 1900 */
193 tm->tm_year = bcd2bin(tm->tm_year);
194}
195
196/*
197 * spear_rtc_read_time - set the time
198 * @dev: rtc device in use
199 * @tm: holds date and time
200 *
201 * This function read time and date. On success it will return 0
202 * otherwise -ve error is returned.
203 */
204static int spear_rtc_read_time(struct device *dev, struct rtc_time *tm)
205{
206 struct platform_device *pdev = to_platform_device(dev);
207 struct rtc_device *rtc = platform_get_drvdata(pdev);
208 struct spear_rtc_config *config = dev_get_drvdata(&rtc->dev);
209 unsigned int time, date;
210
211 /* we don't report wday/yday/isdst ... */
212 rtc_wait_not_busy(config);
213
214 time = readl(config->ioaddr + TIME_REG);
215 date = readl(config->ioaddr + DATE_REG);
216 tm->tm_sec = (time >> SECOND_SHIFT) & SECOND_MASK;
217 tm->tm_min = (time >> MINUTE_SHIFT) & MIN_MASK;
218 tm->tm_hour = (time >> HOUR_SHIFT) & HOUR_MASK;
219 tm->tm_mday = (date >> MDAY_SHIFT) & DAY_MASK;
220 tm->tm_mon = (date >> MONTH_SHIFT) & MONTH_MASK;
221 tm->tm_year = (date >> YEAR_SHIFT) & YEAR_MASK;
222
223 bcd2tm(tm);
224 return 0;
225}
226
227/*
228 * spear_rtc_set_time - set the time
229 * @dev: rtc device in use
230 * @tm: holds date and time
231 *
232 * This function set time and date. On success it will return 0
233 * otherwise -ve error is returned.
234 */
235static int spear_rtc_set_time(struct device *dev, struct rtc_time *tm)
236{
237 struct platform_device *pdev = to_platform_device(dev);
238 struct rtc_device *rtc = platform_get_drvdata(pdev);
239 struct spear_rtc_config *config = dev_get_drvdata(&rtc->dev);
240 unsigned int time, date, err = 0;
241
242 if (tm2bcd(tm) < 0)
243 return -EINVAL;
244
245 rtc_wait_not_busy(config);
246 time = (tm->tm_sec << SECOND_SHIFT) | (tm->tm_min << MINUTE_SHIFT) |
247 (tm->tm_hour << HOUR_SHIFT);
248 date = (tm->tm_mday << MDAY_SHIFT) | (tm->tm_mon << MONTH_SHIFT) |
249 (tm->tm_year << YEAR_SHIFT);
250 writel(time, config->ioaddr + TIME_REG);
251 writel(date, config->ioaddr + DATE_REG);
252 err = is_write_complete(config);
253 if (err < 0)
254 return err;
255
256 return 0;
257}
258
259/*
260 * spear_rtc_read_alarm - read the alarm time
261 * @dev: rtc device in use
262 * @alm: holds alarm date and time
263 *
264 * This function read alarm time and date. On success it will return 0
265 * otherwise -ve error is returned.
266 */
267static int spear_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm)
268{
269 struct platform_device *pdev = to_platform_device(dev);
270 struct rtc_device *rtc = platform_get_drvdata(pdev);
271 struct spear_rtc_config *config = dev_get_drvdata(&rtc->dev);
272 unsigned int time, date;
273
274 rtc_wait_not_busy(config);
275
276 time = readl(config->ioaddr + ALARM_TIME_REG);
277 date = readl(config->ioaddr + ALARM_DATE_REG);
278 alm->time.tm_sec = (time >> SECOND_SHIFT) & SECOND_MASK;
279 alm->time.tm_min = (time >> MINUTE_SHIFT) & MIN_MASK;
280 alm->time.tm_hour = (time >> HOUR_SHIFT) & HOUR_MASK;
281 alm->time.tm_mday = (date >> MDAY_SHIFT) & DAY_MASK;
282 alm->time.tm_mon = (date >> MONTH_SHIFT) & MONTH_MASK;
283 alm->time.tm_year = (date >> YEAR_SHIFT) & YEAR_MASK;
284
285 bcd2tm(&alm->time);
286 alm->enabled = readl(config->ioaddr + CTRL_REG) & INT_ENABLE;
287
288 return 0;
289}
290
291/*
292 * spear_rtc_set_alarm - set the alarm time
293 * @dev: rtc device in use
294 * @alm: holds alarm date and time
295 *
296 * This function set alarm time and date. On success it will return 0
297 * otherwise -ve error is returned.
298 */
299static int spear_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
300{
301 struct platform_device *pdev = to_platform_device(dev);
302 struct rtc_device *rtc = platform_get_drvdata(pdev);
303 struct spear_rtc_config *config = dev_get_drvdata(&rtc->dev);
304 unsigned int time, date, err = 0;
305
306 if (tm2bcd(&alm->time) < 0)
307 return -EINVAL;
308
309 rtc_wait_not_busy(config);
310
311 time = (alm->time.tm_sec << SECOND_SHIFT) | (alm->time.tm_min <<
312 MINUTE_SHIFT) | (alm->time.tm_hour << HOUR_SHIFT);
313 date = (alm->time.tm_mday << MDAY_SHIFT) | (alm->time.tm_mon <<
314 MONTH_SHIFT) | (alm->time.tm_year << YEAR_SHIFT);
315
316 writel(time, config->ioaddr + ALARM_TIME_REG);
317 writel(date, config->ioaddr + ALARM_DATE_REG);
318 err = is_write_complete(config);
319 if (err < 0)
320 return err;
321
322 if (alm->enabled)
323 spear_rtc_enable_interrupt(config);
324 else
325 spear_rtc_disable_interrupt(config);
326
327 return 0;
328}
329static struct rtc_class_ops spear_rtc_ops = {
330 .read_time = spear_rtc_read_time,
331 .set_time = spear_rtc_set_time,
332 .read_alarm = spear_rtc_read_alarm,
333 .set_alarm = spear_rtc_set_alarm,
334};
335
336static int __devinit spear_rtc_probe(struct platform_device *pdev)
337{
338 struct resource *res;
339 struct rtc_device *rtc;
340 struct spear_rtc_config *config;
341 unsigned int status = 0;
342 int irq;
343
344 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
345 if (!res) {
346 dev_err(&pdev->dev, "no resource defined\n");
347 return -EBUSY;
348 }
349 if (!request_mem_region(res->start, resource_size(res), pdev->name)) {
350 dev_err(&pdev->dev, "rtc region already claimed\n");
351 return -EBUSY;
352 }
353
354 config = kzalloc(sizeof(*config), GFP_KERNEL);
355 if (!config) {
356 dev_err(&pdev->dev, "out of memory\n");
357 status = -ENOMEM;
358 goto err_release_region;
359 }
360
361 config->clk = clk_get(&pdev->dev, NULL);
362 if (IS_ERR(config->clk)) {
363 status = PTR_ERR(config->clk);
364 goto err_kfree;
365 }
366
367 status = clk_enable(config->clk);
368 if (status < 0)
369 goto err_clk_put;
370
371 config->ioaddr = ioremap(res->start, resource_size(res));
372 if (!config->ioaddr) {
373 dev_err(&pdev->dev, "ioremap fail\n");
374 status = -ENOMEM;
375 goto err_disable_clock;
376 }
377
378 spin_lock_init(&config->lock);
379
380 rtc = rtc_device_register(pdev->name, &pdev->dev, &spear_rtc_ops,
381 THIS_MODULE);
382 if (IS_ERR(rtc)) {
383 dev_err(&pdev->dev, "can't register RTC device, err %ld\n",
384 PTR_ERR(rtc));
385 status = PTR_ERR(rtc);
386 goto err_iounmap;
387 }
388
389 platform_set_drvdata(pdev, rtc);
390 dev_set_drvdata(&rtc->dev, config);
391
392 /* alarm irqs */
393 irq = platform_get_irq(pdev, 0);
394 if (irq < 0) {
395 dev_err(&pdev->dev, "no update irq?\n");
396 status = irq;
397 goto err_clear_platdata;
398 }
399
400 status = request_irq(irq, spear_rtc_irq, 0, pdev->name, rtc);
401 if (status) {
402 dev_err(&pdev->dev, "Alarm interrupt IRQ%d already \
403 claimed\n", irq);
404 goto err_clear_platdata;
405 }
406
407 if (!device_can_wakeup(&pdev->dev))
408 device_init_wakeup(&pdev->dev, 1);
409
410 return 0;
411
412err_clear_platdata:
413 platform_set_drvdata(pdev, NULL);
414 dev_set_drvdata(&rtc->dev, NULL);
415 rtc_device_unregister(rtc);
416err_iounmap:
417 iounmap(config->ioaddr);
418err_disable_clock:
419 clk_disable(config->clk);
420err_clk_put:
421 clk_put(config->clk);
422err_kfree:
423 kfree(config);
424err_release_region:
425 release_mem_region(res->start, resource_size(res));
426
427 return status;
428}
429
430static int __devexit spear_rtc_remove(struct platform_device *pdev)
431{
432 struct rtc_device *rtc = platform_get_drvdata(pdev);
433 struct spear_rtc_config *config = dev_get_drvdata(&rtc->dev);
434 int irq;
435 struct resource *res;
436
437 /* leave rtc running, but disable irqs */
438 spear_rtc_disable_interrupt(config);
439 device_init_wakeup(&pdev->dev, 0);
440 irq = platform_get_irq(pdev, 0);
441 if (irq)
442 free_irq(irq, pdev);
443 clk_disable(config->clk);
444 clk_put(config->clk);
445 iounmap(config->ioaddr);
446 kfree(config);
447 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
448 if (res)
449 release_mem_region(res->start, resource_size(res));
450 platform_set_drvdata(pdev, NULL);
451 dev_set_drvdata(&rtc->dev, NULL);
452 rtc_device_unregister(rtc);
453
454 return 0;
455}
456
457#ifdef CONFIG_PM
458
459static int spear_rtc_suspend(struct platform_device *pdev, pm_message_t state)
460{
461 struct rtc_device *rtc = platform_get_drvdata(pdev);
462 struct spear_rtc_config *config = dev_get_drvdata(&rtc->dev);
463 int irq;
464
465 irq = platform_get_irq(pdev, 0);
466 if (device_may_wakeup(&pdev->dev))
467 enable_irq_wake(irq);
468 else {
469 spear_rtc_disable_interrupt(config);
470 clk_disable(config->clk);
471 }
472
473 return 0;
474}
475
476static int spear_rtc_resume(struct platform_device *pdev)
477{
478 struct rtc_device *rtc = platform_get_drvdata(pdev);
479 struct spear_rtc_config *config = dev_get_drvdata(&rtc->dev);
480 int irq;
481
482 irq = platform_get_irq(pdev, 0);
483
484 if (device_may_wakeup(&pdev->dev))
485 disable_irq_wake(irq);
486 else {
487 clk_enable(config->clk);
488 spear_rtc_enable_interrupt(config);
489 }
490
491 return 0;
492}
493
494#else
495#define spear_rtc_suspend NULL
496#define spear_rtc_resume NULL
497#endif
498
499static void spear_rtc_shutdown(struct platform_device *pdev)
500{
501 struct rtc_device *rtc = platform_get_drvdata(pdev);
502 struct spear_rtc_config *config = dev_get_drvdata(&rtc->dev);
503
504 spear_rtc_disable_interrupt(config);
505 clk_disable(config->clk);
506}
507
508static struct platform_driver spear_rtc_driver = {
509 .probe = spear_rtc_probe,
510 .remove = __devexit_p(spear_rtc_remove),
511 .suspend = spear_rtc_suspend,
512 .resume = spear_rtc_resume,
513 .shutdown = spear_rtc_shutdown,
514 .driver = {
515 .name = "rtc-spear",
516 },
517};
518
519static int __init rtc_init(void)
520{
521 return platform_driver_register(&spear_rtc_driver);
522}
523module_init(rtc_init);
524
525static void __exit rtc_exit(void)
526{
527 platform_driver_unregister(&spear_rtc_driver);
528}
529module_exit(rtc_exit);
530
531MODULE_ALIAS("platform:rtc-spear");
532MODULE_AUTHOR("Rajeev Kumar <rajeev-dlh.kumar@st.com>");
533MODULE_DESCRIPTION("ST SPEAr Realtime Clock Driver (RTC)");
534MODULE_LICENSE("GPL");
diff --git a/drivers/rtc/rtc-tile.c b/drivers/rtc/rtc-tile.c
new file mode 100644
index 000000000000..eb65dafee66e
--- /dev/null
+++ b/drivers/rtc/rtc-tile.c
@@ -0,0 +1,162 @@
1/*
2 * Copyright 2011 Tilera Corporation. All Rights Reserved.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation, version 2.
7 *
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
11 * NON INFRINGEMENT. See the GNU General Public License for
12 * more details.
13 *
14 * Tilera-specific RTC driver.
15 */
16
17#include <linux/module.h>
18#include <linux/device.h>
19#include <linux/rtc.h>
20#include <linux/platform_device.h>
21
22/* Platform device pointer. */
23static struct platform_device *tile_rtc_platform_device;
24
25/*
26 * RTC read routine. Gets time info from RTC chip via hypervisor syscall.
27 */
28static int read_rtc_time(struct device *dev, struct rtc_time *tm)
29{
30 HV_RTCTime hvtm = hv_get_rtc();
31
32 tm->tm_sec = hvtm.tm_sec;
33 tm->tm_min = hvtm.tm_min;
34 tm->tm_hour = hvtm.tm_hour;
35 tm->tm_mday = hvtm.tm_mday;
36 tm->tm_mon = hvtm.tm_mon;
37 tm->tm_year = hvtm.tm_year;
38 tm->tm_wday = 0;
39 tm->tm_yday = 0;
40 tm->tm_isdst = 0;
41
42 if (rtc_valid_tm(tm) < 0)
43 dev_warn(dev, "Read invalid date/time from RTC\n");
44
45 return 0;
46}
47
48/*
49 * RTC write routine. Sends time info to hypervisor via syscall, to be
50 * written to RTC chip.
51 */
52static int set_rtc_time(struct device *dev, struct rtc_time *tm)
53{
54 HV_RTCTime hvtm;
55
56 hvtm.tm_sec = tm->tm_sec;
57 hvtm.tm_min = tm->tm_min;
58 hvtm.tm_hour = tm->tm_hour;
59 hvtm.tm_mday = tm->tm_mday;
60 hvtm.tm_mon = tm->tm_mon;
61 hvtm.tm_year = tm->tm_year;
62
63 hv_set_rtc(hvtm);
64
65 return 0;
66}
67
68/*
69 * RTC read/write ops.
70 */
71static const struct rtc_class_ops tile_rtc_ops = {
72 .read_time = read_rtc_time,
73 .set_time = set_rtc_time,
74};
75
76/*
77 * Device probe routine.
78 */
79static int __devinit tile_rtc_probe(struct platform_device *dev)
80{
81 struct rtc_device *rtc;
82
83 rtc = rtc_device_register("tile",
84 &dev->dev, &tile_rtc_ops, THIS_MODULE);
85
86 if (IS_ERR(rtc))
87 return PTR_ERR(rtc);
88
89 platform_set_drvdata(dev, rtc);
90
91 return 0;
92}
93
94/*
95 * Device cleanup routine.
96 */
97static int __devexit tile_rtc_remove(struct platform_device *dev)
98{
99 struct rtc_device *rtc = platform_get_drvdata(dev);
100
101 if (rtc)
102 rtc_device_unregister(rtc);
103
104 platform_set_drvdata(dev, NULL);
105
106 return 0;
107}
108
109static struct platform_driver tile_rtc_platform_driver = {
110 .driver = {
111 .name = "rtc-tile",
112 .owner = THIS_MODULE,
113 },
114 .probe = tile_rtc_probe,
115 .remove = __devexit_p(tile_rtc_remove),
116};
117
118/*
119 * Driver init routine.
120 */
121static int __init tile_rtc_driver_init(void)
122{
123 int err;
124
125 err = platform_driver_register(&tile_rtc_platform_driver);
126 if (err)
127 return err;
128
129 tile_rtc_platform_device = platform_device_alloc("rtc-tile", 0);
130 if (tile_rtc_platform_device == NULL) {
131 err = -ENOMEM;
132 goto exit_driver_unregister;
133 }
134
135 err = platform_device_add(tile_rtc_platform_device);
136 if (err)
137 goto exit_device_put;
138
139 return 0;
140
141exit_device_put:
142 platform_device_put(tile_rtc_platform_device);
143
144exit_driver_unregister:
145 platform_driver_unregister(&tile_rtc_platform_driver);
146 return err;
147}
148
149/*
150 * Driver cleanup routine.
151 */
152static void __exit tile_rtc_driver_exit(void)
153{
154 platform_driver_unregister(&tile_rtc_platform_driver);
155}
156
157module_init(tile_rtc_driver_init);
158module_exit(tile_rtc_driver_exit);
159
160MODULE_DESCRIPTION("Tilera-specific Real Time Clock Driver");
161MODULE_LICENSE("GPL");
162MODULE_ALIAS("platform:rtc-tile");
diff --git a/drivers/rtc/rtc-vt8500.c b/drivers/rtc/rtc-vt8500.c
new file mode 100644
index 000000000000..b8bc862903ae
--- /dev/null
+++ b/drivers/rtc/rtc-vt8500.c
@@ -0,0 +1,366 @@
1/*
2 * drivers/rtc/rtc-vt8500.c
3 *
4 * Copyright (C) 2010 Alexey Charkov <alchark@gmail.com>
5 *
6 * Based on rtc-pxa.c
7 *
8 * This software is licensed under the terms of the GNU General Public
9 * License version 2, as published by the Free Software Foundation, and
10 * may be copied, distributed, and modified under those terms.
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
18#include <linux/module.h>
19#include <linux/rtc.h>
20#include <linux/init.h>
21#include <linux/interrupt.h>
22#include <linux/io.h>
23#include <linux/bcd.h>
24#include <linux/platform_device.h>
25#include <linux/slab.h>
26
27/*
28 * Register definitions
29 */
30#define VT8500_RTC_TS 0x00 /* Time set */
31#define VT8500_RTC_DS 0x04 /* Date set */
32#define VT8500_RTC_AS 0x08 /* Alarm set */
33#define VT8500_RTC_CR 0x0c /* Control */
34#define VT8500_RTC_TR 0x10 /* Time read */
35#define VT8500_RTC_DR 0x14 /* Date read */
36#define VT8500_RTC_WS 0x18 /* Write status */
37#define VT8500_RTC_CL 0x20 /* Calibration */
38#define VT8500_RTC_IS 0x24 /* Interrupt status */
39#define VT8500_RTC_ST 0x28 /* Status */
40
41#define INVALID_TIME_BIT (1 << 31)
42
43#define DATE_CENTURY_S 19
44#define DATE_YEAR_S 11
45#define DATE_YEAR_MASK (0xff << DATE_YEAR_S)
46#define DATE_MONTH_S 6
47#define DATE_MONTH_MASK (0x1f << DATE_MONTH_S)
48#define DATE_DAY_MASK 0x3f
49
50#define TIME_DOW_S 20
51#define TIME_DOW_MASK (0x07 << TIME_DOW_S)
52#define TIME_HOUR_S 14
53#define TIME_HOUR_MASK (0x3f << TIME_HOUR_S)
54#define TIME_MIN_S 7
55#define TIME_MIN_MASK (0x7f << TIME_MIN_S)
56#define TIME_SEC_MASK 0x7f
57
58#define ALARM_DAY_S 20
59#define ALARM_DAY_MASK (0x3f << ALARM_DAY_S)
60
61#define ALARM_DAY_BIT (1 << 29)
62#define ALARM_HOUR_BIT (1 << 28)
63#define ALARM_MIN_BIT (1 << 27)
64#define ALARM_SEC_BIT (1 << 26)
65
66#define ALARM_ENABLE_MASK (ALARM_DAY_BIT \
67 | ALARM_HOUR_BIT \
68 | ALARM_MIN_BIT \
69 | ALARM_SEC_BIT)
70
71#define VT8500_RTC_CR_ENABLE (1 << 0) /* Enable RTC */
72#define VT8500_RTC_CR_24H (1 << 1) /* 24h time format */
73#define VT8500_RTC_CR_SM_ENABLE (1 << 2) /* Enable periodic irqs */
74#define VT8500_RTC_CR_SM_SEC (1 << 3) /* 0: 1Hz/60, 1: 1Hz */
75#define VT8500_RTC_CR_CALIB (1 << 4) /* Enable calibration */
76
77struct vt8500_rtc {
78 void __iomem *regbase;
79 struct resource *res;
80 int irq_alarm;
81 int irq_hz;
82 struct rtc_device *rtc;
83 spinlock_t lock; /* Protects this structure */
84};
85
86static irqreturn_t vt8500_rtc_irq(int irq, void *dev_id)
87{
88 struct vt8500_rtc *vt8500_rtc = dev_id;
89 u32 isr;
90 unsigned long events = 0;
91
92 spin_lock(&vt8500_rtc->lock);
93
94 /* clear interrupt sources */
95 isr = readl(vt8500_rtc->regbase + VT8500_RTC_IS);
96 writel(isr, vt8500_rtc->regbase + VT8500_RTC_IS);
97
98 spin_unlock(&vt8500_rtc->lock);
99
100 if (isr & 1)
101 events |= RTC_AF | RTC_IRQF;
102
103 /* Only second/minute interrupts are supported */
104 if (isr & 2)
105 events |= RTC_UF | RTC_IRQF;
106
107 rtc_update_irq(vt8500_rtc->rtc, 1, events);
108
109 return IRQ_HANDLED;
110}
111
112static int vt8500_rtc_read_time(struct device *dev, struct rtc_time *tm)
113{
114 struct vt8500_rtc *vt8500_rtc = dev_get_drvdata(dev);
115 u32 date, time;
116
117 date = readl(vt8500_rtc->regbase + VT8500_RTC_DR);
118 time = readl(vt8500_rtc->regbase + VT8500_RTC_TR);
119
120 tm->tm_sec = bcd2bin(time & TIME_SEC_MASK);
121 tm->tm_min = bcd2bin((time & TIME_MIN_MASK) >> TIME_MIN_S);
122 tm->tm_hour = bcd2bin((time & TIME_HOUR_MASK) >> TIME_HOUR_S);
123 tm->tm_mday = bcd2bin(date & DATE_DAY_MASK);
124 tm->tm_mon = bcd2bin((date & DATE_MONTH_MASK) >> DATE_MONTH_S);
125 tm->tm_year = bcd2bin((date & DATE_YEAR_MASK) >> DATE_YEAR_S)
126 + ((date >> DATE_CENTURY_S) & 1 ? 200 : 100);
127 tm->tm_wday = (time & TIME_DOW_MASK) >> TIME_DOW_S;
128
129 return 0;
130}
131
132static int vt8500_rtc_set_time(struct device *dev, struct rtc_time *tm)
133{
134 struct vt8500_rtc *vt8500_rtc = dev_get_drvdata(dev);
135
136 if (tm->tm_year < 100) {
137 dev_warn(dev, "Only years 2000-2199 are supported by the "
138 "hardware!\n");
139 return -EINVAL;
140 }
141
142 writel((bin2bcd(tm->tm_year - 100) << DATE_YEAR_S)
143 | (bin2bcd(tm->tm_mon) << DATE_MONTH_S)
144 | (bin2bcd(tm->tm_mday)),
145 vt8500_rtc->regbase + VT8500_RTC_DS);
146 writel((bin2bcd(tm->tm_wday) << TIME_DOW_S)
147 | (bin2bcd(tm->tm_hour) << TIME_HOUR_S)
148 | (bin2bcd(tm->tm_min) << TIME_MIN_S)
149 | (bin2bcd(tm->tm_sec)),
150 vt8500_rtc->regbase + VT8500_RTC_TS);
151
152 return 0;
153}
154
155static int vt8500_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
156{
157 struct vt8500_rtc *vt8500_rtc = dev_get_drvdata(dev);
158 u32 isr, alarm;
159
160 alarm = readl(vt8500_rtc->regbase + VT8500_RTC_AS);
161 isr = readl(vt8500_rtc->regbase + VT8500_RTC_IS);
162
163 alrm->time.tm_mday = bcd2bin((alarm & ALARM_DAY_MASK) >> ALARM_DAY_S);
164 alrm->time.tm_hour = bcd2bin((alarm & TIME_HOUR_MASK) >> TIME_HOUR_S);
165 alrm->time.tm_min = bcd2bin((alarm & TIME_MIN_MASK) >> TIME_MIN_S);
166 alrm->time.tm_sec = bcd2bin((alarm & TIME_SEC_MASK));
167
168 alrm->enabled = (alarm & ALARM_ENABLE_MASK) ? 1 : 0;
169
170 alrm->pending = (isr & 1) ? 1 : 0;
171 return rtc_valid_tm(&alrm->time);
172}
173
174static int vt8500_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
175{
176 struct vt8500_rtc *vt8500_rtc = dev_get_drvdata(dev);
177
178 writel((alrm->enabled ? ALARM_ENABLE_MASK : 0)
179 | (bin2bcd(alrm->time.tm_mday) << ALARM_DAY_S)
180 | (bin2bcd(alrm->time.tm_hour) << TIME_HOUR_S)
181 | (bin2bcd(alrm->time.tm_min) << TIME_MIN_S)
182 | (bin2bcd(alrm->time.tm_sec)),
183 vt8500_rtc->regbase + VT8500_RTC_AS);
184
185 return 0;
186}
187
188static int vt8500_alarm_irq_enable(struct device *dev, unsigned int enabled)
189{
190 struct vt8500_rtc *vt8500_rtc = dev_get_drvdata(dev);
191 unsigned long tmp = readl(vt8500_rtc->regbase + VT8500_RTC_AS);
192
193 if (enabled)
194 tmp |= ALARM_ENABLE_MASK;
195 else
196 tmp &= ~ALARM_ENABLE_MASK;
197
198 writel(tmp, vt8500_rtc->regbase + VT8500_RTC_AS);
199 return 0;
200}
201
202static int vt8500_update_irq_enable(struct device *dev, unsigned int enabled)
203{
204 struct vt8500_rtc *vt8500_rtc = dev_get_drvdata(dev);
205 unsigned long tmp = readl(vt8500_rtc->regbase + VT8500_RTC_CR);
206
207 if (enabled)
208 tmp |= VT8500_RTC_CR_SM_SEC | VT8500_RTC_CR_SM_ENABLE;
209 else
210 tmp &= ~VT8500_RTC_CR_SM_ENABLE;
211
212 writel(tmp, vt8500_rtc->regbase + VT8500_RTC_CR);
213 return 0;
214}
215
216static const struct rtc_class_ops vt8500_rtc_ops = {
217 .read_time = vt8500_rtc_read_time,
218 .set_time = vt8500_rtc_set_time,
219 .read_alarm = vt8500_rtc_read_alarm,
220 .set_alarm = vt8500_rtc_set_alarm,
221 .alarm_irq_enable = vt8500_alarm_irq_enable,
222 .update_irq_enable = vt8500_update_irq_enable,
223};
224
225static int __devinit vt8500_rtc_probe(struct platform_device *pdev)
226{
227 struct vt8500_rtc *vt8500_rtc;
228 int ret;
229
230 vt8500_rtc = kzalloc(sizeof(struct vt8500_rtc), GFP_KERNEL);
231 if (!vt8500_rtc)
232 return -ENOMEM;
233
234 spin_lock_init(&vt8500_rtc->lock);
235 platform_set_drvdata(pdev, vt8500_rtc);
236
237 vt8500_rtc->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
238 if (!vt8500_rtc->res) {
239 dev_err(&pdev->dev, "No I/O memory resource defined\n");
240 ret = -ENXIO;
241 goto err_free;
242 }
243
244 vt8500_rtc->irq_alarm = platform_get_irq(pdev, 0);
245 if (vt8500_rtc->irq_alarm < 0) {
246 dev_err(&pdev->dev, "No alarm IRQ resource defined\n");
247 ret = -ENXIO;
248 goto err_free;
249 }
250
251 vt8500_rtc->irq_hz = platform_get_irq(pdev, 1);
252 if (vt8500_rtc->irq_hz < 0) {
253 dev_err(&pdev->dev, "No 1Hz IRQ resource defined\n");
254 ret = -ENXIO;
255 goto err_free;
256 }
257
258 vt8500_rtc->res = request_mem_region(vt8500_rtc->res->start,
259 resource_size(vt8500_rtc->res),
260 "vt8500-rtc");
261 if (vt8500_rtc->res == NULL) {
262 dev_err(&pdev->dev, "failed to request I/O memory\n");
263 ret = -EBUSY;
264 goto err_free;
265 }
266
267 vt8500_rtc->regbase = ioremap(vt8500_rtc->res->start,
268 resource_size(vt8500_rtc->res));
269 if (!vt8500_rtc->regbase) {
270 dev_err(&pdev->dev, "Unable to map RTC I/O memory\n");
271 ret = -EBUSY;
272 goto err_release;
273 }
274
275 /* Enable the second/minute interrupt generation and enable RTC */
276 writel(VT8500_RTC_CR_ENABLE | VT8500_RTC_CR_24H
277 | VT8500_RTC_CR_SM_ENABLE | VT8500_RTC_CR_SM_SEC,
278 vt8500_rtc->regbase + VT8500_RTC_CR);
279
280 vt8500_rtc->rtc = rtc_device_register("vt8500-rtc", &pdev->dev,
281 &vt8500_rtc_ops, THIS_MODULE);
282 if (IS_ERR(vt8500_rtc->rtc)) {
283 ret = PTR_ERR(vt8500_rtc->rtc);
284 dev_err(&pdev->dev,
285 "Failed to register RTC device -> %d\n", ret);
286 goto err_unmap;
287 }
288
289 ret = request_irq(vt8500_rtc->irq_hz, vt8500_rtc_irq, 0,
290 "rtc 1Hz", vt8500_rtc);
291 if (ret < 0) {
292 dev_err(&pdev->dev, "can't get irq %i, err %d\n",
293 vt8500_rtc->irq_hz, ret);
294 goto err_unreg;
295 }
296
297 ret = request_irq(vt8500_rtc->irq_alarm, vt8500_rtc_irq, 0,
298 "rtc alarm", vt8500_rtc);
299 if (ret < 0) {
300 dev_err(&pdev->dev, "can't get irq %i, err %d\n",
301 vt8500_rtc->irq_alarm, ret);
302 goto err_free_hz;
303 }
304
305 return 0;
306
307err_free_hz:
308 free_irq(vt8500_rtc->irq_hz, vt8500_rtc);
309err_unreg:
310 rtc_device_unregister(vt8500_rtc->rtc);
311err_unmap:
312 iounmap(vt8500_rtc->regbase);
313err_release:
314 release_mem_region(vt8500_rtc->res->start,
315 resource_size(vt8500_rtc->res));
316err_free:
317 kfree(vt8500_rtc);
318 return ret;
319}
320
321static int __devexit vt8500_rtc_remove(struct platform_device *pdev)
322{
323 struct vt8500_rtc *vt8500_rtc = platform_get_drvdata(pdev);
324
325 free_irq(vt8500_rtc->irq_alarm, vt8500_rtc);
326 free_irq(vt8500_rtc->irq_hz, vt8500_rtc);
327
328 rtc_device_unregister(vt8500_rtc->rtc);
329
330 /* Disable alarm matching */
331 writel(0, vt8500_rtc->regbase + VT8500_RTC_IS);
332 iounmap(vt8500_rtc->regbase);
333 release_mem_region(vt8500_rtc->res->start,
334 resource_size(vt8500_rtc->res));
335
336 kfree(vt8500_rtc);
337 platform_set_drvdata(pdev, NULL);
338
339 return 0;
340}
341
342static struct platform_driver vt8500_rtc_driver = {
343 .probe = vt8500_rtc_probe,
344 .remove = __devexit_p(vt8500_rtc_remove),
345 .driver = {
346 .name = "vt8500-rtc",
347 .owner = THIS_MODULE,
348 },
349};
350
351static int __init vt8500_rtc_init(void)
352{
353 return platform_driver_register(&vt8500_rtc_driver);
354}
355module_init(vt8500_rtc_init);
356
357static void __exit vt8500_rtc_exit(void)
358{
359 platform_driver_unregister(&vt8500_rtc_driver);
360}
361module_exit(vt8500_rtc_exit);
362
363MODULE_AUTHOR("Alexey Charkov <alchark@gmail.com>");
364MODULE_DESCRIPTION("VIA VT8500 SoC Realtime Clock Driver (RTC)");
365MODULE_LICENSE("GPL");
366MODULE_ALIAS("platform:vt8500-rtc");
generated by cgit v1.2.2 (git 2.25.0) at 2026-01-03 02:56:10 -0500