David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 1 | /* |
Johan Hovold | 10211ae | 2014-12-10 15:53:19 -0800 | [diff] [blame] | 2 | * TI OMAP Real Time Clock interface for Linux |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 3 | * |
| 4 | * Copyright (C) 2003 MontaVista Software, Inc. |
| 5 | * Author: George G. Davis <gdavis@mvista.com> or <source@mvista.com> |
| 6 | * |
| 7 | * Copyright (C) 2006 David Brownell (new RTC framework) |
Johan Hovold | 0125138 | 2014-12-10 15:53:22 -0800 | [diff] [blame] | 8 | * Copyright (C) 2014 Johan Hovold <johan@kernel.org> |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 9 | * |
| 10 | * This program is free software; you can redistribute it and/or |
| 11 | * modify it under the terms of the GNU General Public License |
| 12 | * as published by the Free Software Foundation; either version |
| 13 | * 2 of the License, or (at your option) any later version. |
| 14 | */ |
| 15 | |
| 16 | #include <linux/kernel.h> |
| 17 | #include <linux/init.h> |
| 18 | #include <linux/module.h> |
| 19 | #include <linux/ioport.h> |
| 20 | #include <linux/delay.h> |
| 21 | #include <linux/rtc.h> |
| 22 | #include <linux/bcd.h> |
| 23 | #include <linux/platform_device.h> |
Afzal Mohammed | 9e0344d | 2012-12-17 16:02:15 -0800 | [diff] [blame] | 24 | #include <linux/of.h> |
| 25 | #include <linux/of_device.h> |
Vaibhav Hiremath | fc9bd90 | 2012-12-17 16:02:18 -0800 | [diff] [blame] | 26 | #include <linux/pm_runtime.h> |
Sachin Kamat | 4b30c9f | 2013-07-03 15:06:00 -0700 | [diff] [blame] | 27 | #include <linux/io.h> |
Keerthy | 532409a | 2015-08-18 15:11:15 +0530 | [diff] [blame^] | 28 | #include <linux/clk.h> |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 29 | |
Johan Hovold | 10211ae | 2014-12-10 15:53:19 -0800 | [diff] [blame] | 30 | /* |
| 31 | * The OMAP RTC is a year/month/day/hours/minutes/seconds BCD clock |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 32 | * with century-range alarm matching, driven by the 32kHz clock. |
| 33 | * |
| 34 | * The main user-visible ways it differs from PC RTCs are by omitting |
| 35 | * "don't care" alarm fields and sub-second periodic IRQs, and having |
| 36 | * an autoadjust mechanism to calibrate to the true oscillator rate. |
| 37 | * |
| 38 | * Board-specific wiring options include using split power mode with |
| 39 | * RTC_OFF_NOFF used as the reset signal (so the RTC won't be reset), |
| 40 | * and wiring RTC_WAKE_INT (so the RTC alarm can wake the system from |
Sekhar Nori | fa5b078 | 2010-10-27 15:33:05 -0700 | [diff] [blame] | 41 | * low power modes) for OMAP1 boards (OMAP-L138 has this built into |
| 42 | * the SoC). See the BOARD-SPECIFIC CUSTOMIZATION comment. |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 43 | */ |
| 44 | |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 45 | /* RTC registers */ |
| 46 | #define OMAP_RTC_SECONDS_REG 0x00 |
| 47 | #define OMAP_RTC_MINUTES_REG 0x04 |
| 48 | #define OMAP_RTC_HOURS_REG 0x08 |
| 49 | #define OMAP_RTC_DAYS_REG 0x0C |
| 50 | #define OMAP_RTC_MONTHS_REG 0x10 |
| 51 | #define OMAP_RTC_YEARS_REG 0x14 |
| 52 | #define OMAP_RTC_WEEKS_REG 0x18 |
| 53 | |
| 54 | #define OMAP_RTC_ALARM_SECONDS_REG 0x20 |
| 55 | #define OMAP_RTC_ALARM_MINUTES_REG 0x24 |
| 56 | #define OMAP_RTC_ALARM_HOURS_REG 0x28 |
| 57 | #define OMAP_RTC_ALARM_DAYS_REG 0x2c |
| 58 | #define OMAP_RTC_ALARM_MONTHS_REG 0x30 |
| 59 | #define OMAP_RTC_ALARM_YEARS_REG 0x34 |
| 60 | |
| 61 | #define OMAP_RTC_CTRL_REG 0x40 |
| 62 | #define OMAP_RTC_STATUS_REG 0x44 |
| 63 | #define OMAP_RTC_INTERRUPTS_REG 0x48 |
| 64 | |
| 65 | #define OMAP_RTC_COMP_LSB_REG 0x4c |
| 66 | #define OMAP_RTC_COMP_MSB_REG 0x50 |
| 67 | #define OMAP_RTC_OSC_REG 0x54 |
| 68 | |
Afzal Mohammed | cab1458 | 2012-12-17 16:02:11 -0800 | [diff] [blame] | 69 | #define OMAP_RTC_KICK0_REG 0x6c |
| 70 | #define OMAP_RTC_KICK1_REG 0x70 |
| 71 | |
Hebbar Gururaja | 8af750e | 2013-09-11 14:24:18 -0700 | [diff] [blame] | 72 | #define OMAP_RTC_IRQWAKEEN 0x7c |
| 73 | |
Johan Hovold | 222a12f | 2014-12-10 15:53:13 -0800 | [diff] [blame] | 74 | #define OMAP_RTC_ALARM2_SECONDS_REG 0x80 |
| 75 | #define OMAP_RTC_ALARM2_MINUTES_REG 0x84 |
| 76 | #define OMAP_RTC_ALARM2_HOURS_REG 0x88 |
| 77 | #define OMAP_RTC_ALARM2_DAYS_REG 0x8c |
| 78 | #define OMAP_RTC_ALARM2_MONTHS_REG 0x90 |
| 79 | #define OMAP_RTC_ALARM2_YEARS_REG 0x94 |
| 80 | |
| 81 | #define OMAP_RTC_PMIC_REG 0x98 |
| 82 | |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 83 | /* OMAP_RTC_CTRL_REG bit fields: */ |
Sekhar Nori | 92adb96 | 2014-06-06 14:36:05 -0700 | [diff] [blame] | 84 | #define OMAP_RTC_CTRL_SPLIT BIT(7) |
| 85 | #define OMAP_RTC_CTRL_DISABLE BIT(6) |
| 86 | #define OMAP_RTC_CTRL_SET_32_COUNTER BIT(5) |
| 87 | #define OMAP_RTC_CTRL_TEST BIT(4) |
| 88 | #define OMAP_RTC_CTRL_MODE_12_24 BIT(3) |
| 89 | #define OMAP_RTC_CTRL_AUTO_COMP BIT(2) |
| 90 | #define OMAP_RTC_CTRL_ROUND_30S BIT(1) |
| 91 | #define OMAP_RTC_CTRL_STOP BIT(0) |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 92 | |
| 93 | /* OMAP_RTC_STATUS_REG bit fields: */ |
Sekhar Nori | 92adb96 | 2014-06-06 14:36:05 -0700 | [diff] [blame] | 94 | #define OMAP_RTC_STATUS_POWER_UP BIT(7) |
Johan Hovold | 222a12f | 2014-12-10 15:53:13 -0800 | [diff] [blame] | 95 | #define OMAP_RTC_STATUS_ALARM2 BIT(7) |
Sekhar Nori | 92adb96 | 2014-06-06 14:36:05 -0700 | [diff] [blame] | 96 | #define OMAP_RTC_STATUS_ALARM BIT(6) |
| 97 | #define OMAP_RTC_STATUS_1D_EVENT BIT(5) |
| 98 | #define OMAP_RTC_STATUS_1H_EVENT BIT(4) |
| 99 | #define OMAP_RTC_STATUS_1M_EVENT BIT(3) |
| 100 | #define OMAP_RTC_STATUS_1S_EVENT BIT(2) |
| 101 | #define OMAP_RTC_STATUS_RUN BIT(1) |
| 102 | #define OMAP_RTC_STATUS_BUSY BIT(0) |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 103 | |
| 104 | /* OMAP_RTC_INTERRUPTS_REG bit fields: */ |
Johan Hovold | 222a12f | 2014-12-10 15:53:13 -0800 | [diff] [blame] | 105 | #define OMAP_RTC_INTERRUPTS_IT_ALARM2 BIT(4) |
Sekhar Nori | 92adb96 | 2014-06-06 14:36:05 -0700 | [diff] [blame] | 106 | #define OMAP_RTC_INTERRUPTS_IT_ALARM BIT(3) |
| 107 | #define OMAP_RTC_INTERRUPTS_IT_TIMER BIT(2) |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 108 | |
Sekhar Nori | cd914bb | 2014-06-06 14:36:06 -0700 | [diff] [blame] | 109 | /* OMAP_RTC_OSC_REG bit fields: */ |
| 110 | #define OMAP_RTC_OSC_32KCLK_EN BIT(6) |
| 111 | |
Hebbar Gururaja | 8af750e | 2013-09-11 14:24:18 -0700 | [diff] [blame] | 112 | /* OMAP_RTC_IRQWAKEEN bit fields: */ |
Sekhar Nori | 92adb96 | 2014-06-06 14:36:05 -0700 | [diff] [blame] | 113 | #define OMAP_RTC_IRQWAKEEN_ALARM_WAKEEN BIT(1) |
Hebbar Gururaja | 8af750e | 2013-09-11 14:24:18 -0700 | [diff] [blame] | 114 | |
Johan Hovold | 222a12f | 2014-12-10 15:53:13 -0800 | [diff] [blame] | 115 | /* OMAP_RTC_PMIC bit fields: */ |
| 116 | #define OMAP_RTC_PMIC_POWER_EN_EN BIT(16) |
| 117 | |
Afzal Mohammed | cab1458 | 2012-12-17 16:02:11 -0800 | [diff] [blame] | 118 | /* OMAP_RTC_KICKER values */ |
| 119 | #define KICK0_VALUE 0x83e70b13 |
| 120 | #define KICK1_VALUE 0x95a4f1e0 |
| 121 | |
Lokesh Vutla | 9c28bd0 | 2015-04-16 12:46:00 -0700 | [diff] [blame] | 122 | struct omap_rtc; |
| 123 | |
Johan Hovold | 2153f94 | 2014-12-10 15:53:01 -0800 | [diff] [blame] | 124 | struct omap_rtc_device_type { |
| 125 | bool has_32kclk_en; |
Johan Hovold | 2153f94 | 2014-12-10 15:53:01 -0800 | [diff] [blame] | 126 | bool has_irqwakeen; |
Johan Hovold | 222a12f | 2014-12-10 15:53:13 -0800 | [diff] [blame] | 127 | bool has_pmic_mode; |
Johan Hovold | 9291e34 | 2014-12-10 15:53:04 -0800 | [diff] [blame] | 128 | bool has_power_up_reset; |
Lokesh Vutla | 9c28bd0 | 2015-04-16 12:46:00 -0700 | [diff] [blame] | 129 | void (*lock)(struct omap_rtc *rtc); |
| 130 | void (*unlock)(struct omap_rtc *rtc); |
Johan Hovold | 2153f94 | 2014-12-10 15:53:01 -0800 | [diff] [blame] | 131 | }; |
Sekhar Nori | cd914bb | 2014-06-06 14:36:06 -0700 | [diff] [blame] | 132 | |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 133 | struct omap_rtc { |
| 134 | struct rtc_device *rtc; |
| 135 | void __iomem *base; |
Keerthy | 532409a | 2015-08-18 15:11:15 +0530 | [diff] [blame^] | 136 | struct clk *clk; |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 137 | int irq_alarm; |
| 138 | int irq_timer; |
| 139 | u8 interrupts_reg; |
Johan Hovold | 222a12f | 2014-12-10 15:53:13 -0800 | [diff] [blame] | 140 | bool is_pmic_controller; |
Johan Hovold | 2153f94 | 2014-12-10 15:53:01 -0800 | [diff] [blame] | 141 | const struct omap_rtc_device_type *type; |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 142 | }; |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 143 | |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 144 | static inline u8 rtc_read(struct omap_rtc *rtc, unsigned int reg) |
| 145 | { |
| 146 | return readb(rtc->base + reg); |
| 147 | } |
Afzal Mohammed | cab1458 | 2012-12-17 16:02:11 -0800 | [diff] [blame] | 148 | |
Johan Hovold | c253a89 | 2014-12-10 15:53:10 -0800 | [diff] [blame] | 149 | static inline u32 rtc_readl(struct omap_rtc *rtc, unsigned int reg) |
| 150 | { |
| 151 | return readl(rtc->base + reg); |
| 152 | } |
| 153 | |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 154 | static inline void rtc_write(struct omap_rtc *rtc, unsigned int reg, u8 val) |
| 155 | { |
| 156 | writeb(val, rtc->base + reg); |
| 157 | } |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 158 | |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 159 | static inline void rtc_writel(struct omap_rtc *rtc, unsigned int reg, u32 val) |
| 160 | { |
| 161 | writel(val, rtc->base + reg); |
| 162 | } |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 163 | |
Lokesh Vutla | 9c28bd0 | 2015-04-16 12:46:00 -0700 | [diff] [blame] | 164 | static void am3352_rtc_unlock(struct omap_rtc *rtc) |
| 165 | { |
| 166 | rtc_writel(rtc, OMAP_RTC_KICK0_REG, KICK0_VALUE); |
| 167 | rtc_writel(rtc, OMAP_RTC_KICK1_REG, KICK1_VALUE); |
| 168 | } |
| 169 | |
| 170 | static void am3352_rtc_lock(struct omap_rtc *rtc) |
| 171 | { |
| 172 | rtc_writel(rtc, OMAP_RTC_KICK0_REG, 0); |
| 173 | rtc_writel(rtc, OMAP_RTC_KICK1_REG, 0); |
| 174 | } |
| 175 | |
| 176 | static void default_rtc_unlock(struct omap_rtc *rtc) |
| 177 | { |
| 178 | } |
| 179 | |
| 180 | static void default_rtc_lock(struct omap_rtc *rtc) |
| 181 | { |
| 182 | } |
| 183 | |
Johan Hovold | 10211ae | 2014-12-10 15:53:19 -0800 | [diff] [blame] | 184 | /* |
| 185 | * We rely on the rtc framework to handle locking (rtc->ops_lock), |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 186 | * so the only other requirement is that register accesses which |
| 187 | * require BUSY to be clear are made with IRQs locally disabled |
| 188 | */ |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 189 | static void rtc_wait_not_busy(struct omap_rtc *rtc) |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 190 | { |
Johan Hovold | 10211ae | 2014-12-10 15:53:19 -0800 | [diff] [blame] | 191 | int count; |
| 192 | u8 status; |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 193 | |
| 194 | /* BUSY may stay active for 1/32768 second (~30 usec) */ |
| 195 | for (count = 0; count < 50; count++) { |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 196 | status = rtc_read(rtc, OMAP_RTC_STATUS_REG); |
Johan Hovold | 10211ae | 2014-12-10 15:53:19 -0800 | [diff] [blame] | 197 | if (!(status & OMAP_RTC_STATUS_BUSY)) |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 198 | break; |
| 199 | udelay(1); |
| 200 | } |
| 201 | /* now we have ~15 usec to read/write various registers */ |
| 202 | } |
| 203 | |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 204 | static irqreturn_t rtc_irq(int irq, void *dev_id) |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 205 | { |
Johan Hovold | 10211ae | 2014-12-10 15:53:19 -0800 | [diff] [blame] | 206 | struct omap_rtc *rtc = dev_id; |
| 207 | unsigned long events = 0; |
| 208 | u8 irq_data; |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 209 | |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 210 | irq_data = rtc_read(rtc, OMAP_RTC_STATUS_REG); |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 211 | |
| 212 | /* alarm irq? */ |
| 213 | if (irq_data & OMAP_RTC_STATUS_ALARM) { |
Lokesh Vutla | 9c28bd0 | 2015-04-16 12:46:00 -0700 | [diff] [blame] | 214 | rtc->type->unlock(rtc); |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 215 | rtc_write(rtc, OMAP_RTC_STATUS_REG, OMAP_RTC_STATUS_ALARM); |
Lokesh Vutla | 9c28bd0 | 2015-04-16 12:46:00 -0700 | [diff] [blame] | 216 | rtc->type->lock(rtc); |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 217 | events |= RTC_IRQF | RTC_AF; |
| 218 | } |
| 219 | |
| 220 | /* 1/sec periodic/update irq? */ |
| 221 | if (irq_data & OMAP_RTC_STATUS_1S_EVENT) |
| 222 | events |= RTC_IRQF | RTC_UF; |
| 223 | |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 224 | rtc_update_irq(rtc->rtc, 1, events); |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 225 | |
| 226 | return IRQ_HANDLED; |
| 227 | } |
| 228 | |
John Stultz | 16380c1 | 2011-02-02 17:02:41 -0800 | [diff] [blame] | 229 | static int omap_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled) |
| 230 | { |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 231 | struct omap_rtc *rtc = dev_get_drvdata(dev); |
Lokesh Vutla | ab7f580 | 2014-06-06 14:36:12 -0700 | [diff] [blame] | 232 | u8 reg, irqwake_reg = 0; |
John Stultz | 16380c1 | 2011-02-02 17:02:41 -0800 | [diff] [blame] | 233 | |
| 234 | local_irq_disable(); |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 235 | rtc_wait_not_busy(rtc); |
| 236 | reg = rtc_read(rtc, OMAP_RTC_INTERRUPTS_REG); |
Johan Hovold | 2153f94 | 2014-12-10 15:53:01 -0800 | [diff] [blame] | 237 | if (rtc->type->has_irqwakeen) |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 238 | irqwake_reg = rtc_read(rtc, OMAP_RTC_IRQWAKEEN); |
Lokesh Vutla | ab7f580 | 2014-06-06 14:36:12 -0700 | [diff] [blame] | 239 | |
| 240 | if (enabled) { |
John Stultz | 16380c1 | 2011-02-02 17:02:41 -0800 | [diff] [blame] | 241 | reg |= OMAP_RTC_INTERRUPTS_IT_ALARM; |
Lokesh Vutla | ab7f580 | 2014-06-06 14:36:12 -0700 | [diff] [blame] | 242 | irqwake_reg |= OMAP_RTC_IRQWAKEEN_ALARM_WAKEEN; |
| 243 | } else { |
John Stultz | 16380c1 | 2011-02-02 17:02:41 -0800 | [diff] [blame] | 244 | reg &= ~OMAP_RTC_INTERRUPTS_IT_ALARM; |
Lokesh Vutla | ab7f580 | 2014-06-06 14:36:12 -0700 | [diff] [blame] | 245 | irqwake_reg &= ~OMAP_RTC_IRQWAKEEN_ALARM_WAKEEN; |
| 246 | } |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 247 | rtc_wait_not_busy(rtc); |
Lokesh Vutla | 9c28bd0 | 2015-04-16 12:46:00 -0700 | [diff] [blame] | 248 | rtc->type->unlock(rtc); |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 249 | rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, reg); |
Johan Hovold | 2153f94 | 2014-12-10 15:53:01 -0800 | [diff] [blame] | 250 | if (rtc->type->has_irqwakeen) |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 251 | rtc_write(rtc, OMAP_RTC_IRQWAKEEN, irqwake_reg); |
Lokesh Vutla | 9c28bd0 | 2015-04-16 12:46:00 -0700 | [diff] [blame] | 252 | rtc->type->lock(rtc); |
John Stultz | 16380c1 | 2011-02-02 17:02:41 -0800 | [diff] [blame] | 253 | local_irq_enable(); |
| 254 | |
| 255 | return 0; |
| 256 | } |
| 257 | |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 258 | /* this hardware doesn't support "don't care" alarm fields */ |
| 259 | static int tm2bcd(struct rtc_time *tm) |
| 260 | { |
| 261 | if (rtc_valid_tm(tm) != 0) |
| 262 | return -EINVAL; |
| 263 | |
Adrian Bunk | fe20ba7 | 2008-10-18 20:28:41 -0700 | [diff] [blame] | 264 | tm->tm_sec = bin2bcd(tm->tm_sec); |
| 265 | tm->tm_min = bin2bcd(tm->tm_min); |
| 266 | tm->tm_hour = bin2bcd(tm->tm_hour); |
| 267 | tm->tm_mday = bin2bcd(tm->tm_mday); |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 268 | |
Adrian Bunk | fe20ba7 | 2008-10-18 20:28:41 -0700 | [diff] [blame] | 269 | tm->tm_mon = bin2bcd(tm->tm_mon + 1); |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 270 | |
| 271 | /* epoch == 1900 */ |
| 272 | if (tm->tm_year < 100 || tm->tm_year > 199) |
| 273 | return -EINVAL; |
Adrian Bunk | fe20ba7 | 2008-10-18 20:28:41 -0700 | [diff] [blame] | 274 | tm->tm_year = bin2bcd(tm->tm_year - 100); |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 275 | |
| 276 | return 0; |
| 277 | } |
| 278 | |
| 279 | static void bcd2tm(struct rtc_time *tm) |
| 280 | { |
Adrian Bunk | fe20ba7 | 2008-10-18 20:28:41 -0700 | [diff] [blame] | 281 | tm->tm_sec = bcd2bin(tm->tm_sec); |
| 282 | tm->tm_min = bcd2bin(tm->tm_min); |
| 283 | tm->tm_hour = bcd2bin(tm->tm_hour); |
| 284 | tm->tm_mday = bcd2bin(tm->tm_mday); |
| 285 | tm->tm_mon = bcd2bin(tm->tm_mon) - 1; |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 286 | /* epoch == 1900 */ |
Adrian Bunk | fe20ba7 | 2008-10-18 20:28:41 -0700 | [diff] [blame] | 287 | tm->tm_year = bcd2bin(tm->tm_year) + 100; |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 288 | } |
| 289 | |
Johan Hovold | cbbe326 | 2014-12-10 15:53:07 -0800 | [diff] [blame] | 290 | static void omap_rtc_read_time_raw(struct omap_rtc *rtc, struct rtc_time *tm) |
| 291 | { |
| 292 | tm->tm_sec = rtc_read(rtc, OMAP_RTC_SECONDS_REG); |
| 293 | tm->tm_min = rtc_read(rtc, OMAP_RTC_MINUTES_REG); |
| 294 | tm->tm_hour = rtc_read(rtc, OMAP_RTC_HOURS_REG); |
| 295 | tm->tm_mday = rtc_read(rtc, OMAP_RTC_DAYS_REG); |
| 296 | tm->tm_mon = rtc_read(rtc, OMAP_RTC_MONTHS_REG); |
| 297 | tm->tm_year = rtc_read(rtc, OMAP_RTC_YEARS_REG); |
| 298 | } |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 299 | |
| 300 | static int omap_rtc_read_time(struct device *dev, struct rtc_time *tm) |
| 301 | { |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 302 | struct omap_rtc *rtc = dev_get_drvdata(dev); |
| 303 | |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 304 | /* we don't report wday/yday/isdst ... */ |
| 305 | local_irq_disable(); |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 306 | rtc_wait_not_busy(rtc); |
Johan Hovold | cbbe326 | 2014-12-10 15:53:07 -0800 | [diff] [blame] | 307 | omap_rtc_read_time_raw(rtc, tm); |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 308 | local_irq_enable(); |
| 309 | |
| 310 | bcd2tm(tm); |
Johan Hovold | 10211ae | 2014-12-10 15:53:19 -0800 | [diff] [blame] | 311 | |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 312 | return 0; |
| 313 | } |
| 314 | |
| 315 | static int omap_rtc_set_time(struct device *dev, struct rtc_time *tm) |
| 316 | { |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 317 | struct omap_rtc *rtc = dev_get_drvdata(dev); |
| 318 | |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 319 | if (tm2bcd(tm) < 0) |
| 320 | return -EINVAL; |
Johan Hovold | 10211ae | 2014-12-10 15:53:19 -0800 | [diff] [blame] | 321 | |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 322 | local_irq_disable(); |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 323 | rtc_wait_not_busy(rtc); |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 324 | |
Lokesh Vutla | 9c28bd0 | 2015-04-16 12:46:00 -0700 | [diff] [blame] | 325 | rtc->type->unlock(rtc); |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 326 | rtc_write(rtc, OMAP_RTC_YEARS_REG, tm->tm_year); |
| 327 | rtc_write(rtc, OMAP_RTC_MONTHS_REG, tm->tm_mon); |
| 328 | rtc_write(rtc, OMAP_RTC_DAYS_REG, tm->tm_mday); |
| 329 | rtc_write(rtc, OMAP_RTC_HOURS_REG, tm->tm_hour); |
| 330 | rtc_write(rtc, OMAP_RTC_MINUTES_REG, tm->tm_min); |
| 331 | rtc_write(rtc, OMAP_RTC_SECONDS_REG, tm->tm_sec); |
Lokesh Vutla | 9c28bd0 | 2015-04-16 12:46:00 -0700 | [diff] [blame] | 332 | rtc->type->lock(rtc); |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 333 | |
| 334 | local_irq_enable(); |
| 335 | |
| 336 | return 0; |
| 337 | } |
| 338 | |
| 339 | static int omap_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm) |
| 340 | { |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 341 | struct omap_rtc *rtc = dev_get_drvdata(dev); |
Johan Hovold | 10211ae | 2014-12-10 15:53:19 -0800 | [diff] [blame] | 342 | u8 interrupts; |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 343 | |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 344 | local_irq_disable(); |
| 345 | rtc_wait_not_busy(rtc); |
| 346 | |
| 347 | alm->time.tm_sec = rtc_read(rtc, OMAP_RTC_ALARM_SECONDS_REG); |
| 348 | alm->time.tm_min = rtc_read(rtc, OMAP_RTC_ALARM_MINUTES_REG); |
| 349 | alm->time.tm_hour = rtc_read(rtc, OMAP_RTC_ALARM_HOURS_REG); |
| 350 | alm->time.tm_mday = rtc_read(rtc, OMAP_RTC_ALARM_DAYS_REG); |
| 351 | alm->time.tm_mon = rtc_read(rtc, OMAP_RTC_ALARM_MONTHS_REG); |
| 352 | alm->time.tm_year = rtc_read(rtc, OMAP_RTC_ALARM_YEARS_REG); |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 353 | |
| 354 | local_irq_enable(); |
| 355 | |
| 356 | bcd2tm(&alm->time); |
Johan Hovold | 10211ae | 2014-12-10 15:53:19 -0800 | [diff] [blame] | 357 | |
| 358 | interrupts = rtc_read(rtc, OMAP_RTC_INTERRUPTS_REG); |
| 359 | alm->enabled = !!(interrupts & OMAP_RTC_INTERRUPTS_IT_ALARM); |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 360 | |
| 361 | return 0; |
| 362 | } |
| 363 | |
| 364 | static int omap_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm) |
| 365 | { |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 366 | struct omap_rtc *rtc = dev_get_drvdata(dev); |
Lokesh Vutla | ab7f580 | 2014-06-06 14:36:12 -0700 | [diff] [blame] | 367 | u8 reg, irqwake_reg = 0; |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 368 | |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 369 | if (tm2bcd(&alm->time) < 0) |
| 370 | return -EINVAL; |
| 371 | |
| 372 | local_irq_disable(); |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 373 | rtc_wait_not_busy(rtc); |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 374 | |
Lokesh Vutla | 9c28bd0 | 2015-04-16 12:46:00 -0700 | [diff] [blame] | 375 | rtc->type->unlock(rtc); |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 376 | rtc_write(rtc, OMAP_RTC_ALARM_YEARS_REG, alm->time.tm_year); |
| 377 | rtc_write(rtc, OMAP_RTC_ALARM_MONTHS_REG, alm->time.tm_mon); |
| 378 | rtc_write(rtc, OMAP_RTC_ALARM_DAYS_REG, alm->time.tm_mday); |
| 379 | rtc_write(rtc, OMAP_RTC_ALARM_HOURS_REG, alm->time.tm_hour); |
| 380 | rtc_write(rtc, OMAP_RTC_ALARM_MINUTES_REG, alm->time.tm_min); |
| 381 | rtc_write(rtc, OMAP_RTC_ALARM_SECONDS_REG, alm->time.tm_sec); |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 382 | |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 383 | reg = rtc_read(rtc, OMAP_RTC_INTERRUPTS_REG); |
Johan Hovold | 2153f94 | 2014-12-10 15:53:01 -0800 | [diff] [blame] | 384 | if (rtc->type->has_irqwakeen) |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 385 | irqwake_reg = rtc_read(rtc, OMAP_RTC_IRQWAKEEN); |
Lokesh Vutla | ab7f580 | 2014-06-06 14:36:12 -0700 | [diff] [blame] | 386 | |
| 387 | if (alm->enabled) { |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 388 | reg |= OMAP_RTC_INTERRUPTS_IT_ALARM; |
Lokesh Vutla | ab7f580 | 2014-06-06 14:36:12 -0700 | [diff] [blame] | 389 | irqwake_reg |= OMAP_RTC_IRQWAKEEN_ALARM_WAKEEN; |
| 390 | } else { |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 391 | reg &= ~OMAP_RTC_INTERRUPTS_IT_ALARM; |
Lokesh Vutla | ab7f580 | 2014-06-06 14:36:12 -0700 | [diff] [blame] | 392 | irqwake_reg &= ~OMAP_RTC_IRQWAKEEN_ALARM_WAKEEN; |
| 393 | } |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 394 | rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, reg); |
Johan Hovold | 2153f94 | 2014-12-10 15:53:01 -0800 | [diff] [blame] | 395 | if (rtc->type->has_irqwakeen) |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 396 | rtc_write(rtc, OMAP_RTC_IRQWAKEEN, irqwake_reg); |
Lokesh Vutla | 9c28bd0 | 2015-04-16 12:46:00 -0700 | [diff] [blame] | 397 | rtc->type->lock(rtc); |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 398 | |
| 399 | local_irq_enable(); |
| 400 | |
| 401 | return 0; |
| 402 | } |
| 403 | |
Johan Hovold | 222a12f | 2014-12-10 15:53:13 -0800 | [diff] [blame] | 404 | static struct omap_rtc *omap_rtc_power_off_rtc; |
| 405 | |
| 406 | /* |
| 407 | * omap_rtc_poweroff: RTC-controlled power off |
| 408 | * |
| 409 | * The RTC can be used to control an external PMIC via the pmic_power_en pin, |
| 410 | * which can be configured to transition to OFF on ALARM2 events. |
| 411 | * |
| 412 | * Notes: |
| 413 | * The two-second alarm offset is the shortest offset possible as the alarm |
| 414 | * registers must be set before the next timer update and the offset |
| 415 | * calculation is too heavy for everything to be done within a single access |
| 416 | * period (~15 us). |
| 417 | * |
| 418 | * Called with local interrupts disabled. |
| 419 | */ |
| 420 | static void omap_rtc_power_off(void) |
| 421 | { |
| 422 | struct omap_rtc *rtc = omap_rtc_power_off_rtc; |
| 423 | struct rtc_time tm; |
| 424 | unsigned long now; |
| 425 | u32 val; |
| 426 | |
Lokesh Vutla | 9c28bd0 | 2015-04-16 12:46:00 -0700 | [diff] [blame] | 427 | rtc->type->unlock(rtc); |
Johan Hovold | 222a12f | 2014-12-10 15:53:13 -0800 | [diff] [blame] | 428 | /* enable pmic_power_en control */ |
| 429 | val = rtc_readl(rtc, OMAP_RTC_PMIC_REG); |
| 430 | rtc_writel(rtc, OMAP_RTC_PMIC_REG, val | OMAP_RTC_PMIC_POWER_EN_EN); |
| 431 | |
| 432 | /* set alarm two seconds from now */ |
| 433 | omap_rtc_read_time_raw(rtc, &tm); |
| 434 | bcd2tm(&tm); |
| 435 | rtc_tm_to_time(&tm, &now); |
| 436 | rtc_time_to_tm(now + 2, &tm); |
| 437 | |
| 438 | if (tm2bcd(&tm) < 0) { |
| 439 | dev_err(&rtc->rtc->dev, "power off failed\n"); |
| 440 | return; |
| 441 | } |
| 442 | |
| 443 | rtc_wait_not_busy(rtc); |
| 444 | |
| 445 | rtc_write(rtc, OMAP_RTC_ALARM2_SECONDS_REG, tm.tm_sec); |
| 446 | rtc_write(rtc, OMAP_RTC_ALARM2_MINUTES_REG, tm.tm_min); |
| 447 | rtc_write(rtc, OMAP_RTC_ALARM2_HOURS_REG, tm.tm_hour); |
| 448 | rtc_write(rtc, OMAP_RTC_ALARM2_DAYS_REG, tm.tm_mday); |
| 449 | rtc_write(rtc, OMAP_RTC_ALARM2_MONTHS_REG, tm.tm_mon); |
| 450 | rtc_write(rtc, OMAP_RTC_ALARM2_YEARS_REG, tm.tm_year); |
| 451 | |
| 452 | /* |
| 453 | * enable ALARM2 interrupt |
| 454 | * |
| 455 | * NOTE: this fails on AM3352 if rtc_write (writeb) is used |
| 456 | */ |
| 457 | val = rtc_read(rtc, OMAP_RTC_INTERRUPTS_REG); |
| 458 | rtc_writel(rtc, OMAP_RTC_INTERRUPTS_REG, |
| 459 | val | OMAP_RTC_INTERRUPTS_IT_ALARM2); |
Lokesh Vutla | 9c28bd0 | 2015-04-16 12:46:00 -0700 | [diff] [blame] | 460 | rtc->type->lock(rtc); |
Johan Hovold | 222a12f | 2014-12-10 15:53:13 -0800 | [diff] [blame] | 461 | |
| 462 | /* |
| 463 | * Wait for alarm to trigger (within two seconds) and external PMIC to |
| 464 | * power off the system. Add a 500 ms margin for external latencies |
| 465 | * (e.g. debounce circuits). |
| 466 | */ |
| 467 | mdelay(2500); |
| 468 | } |
| 469 | |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 470 | static struct rtc_class_ops omap_rtc_ops = { |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 471 | .read_time = omap_rtc_read_time, |
| 472 | .set_time = omap_rtc_set_time, |
| 473 | .read_alarm = omap_rtc_read_alarm, |
| 474 | .set_alarm = omap_rtc_set_alarm, |
John Stultz | 16380c1 | 2011-02-02 17:02:41 -0800 | [diff] [blame] | 475 | .alarm_irq_enable = omap_rtc_alarm_irq_enable, |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 476 | }; |
| 477 | |
Johan Hovold | 2153f94 | 2014-12-10 15:53:01 -0800 | [diff] [blame] | 478 | static const struct omap_rtc_device_type omap_rtc_default_type = { |
Johan Hovold | 9291e34 | 2014-12-10 15:53:04 -0800 | [diff] [blame] | 479 | .has_power_up_reset = true, |
Lokesh Vutla | 9c28bd0 | 2015-04-16 12:46:00 -0700 | [diff] [blame] | 480 | .lock = default_rtc_lock, |
| 481 | .unlock = default_rtc_unlock, |
Johan Hovold | 2153f94 | 2014-12-10 15:53:01 -0800 | [diff] [blame] | 482 | }; |
Afzal Mohammed | 9e0344d | 2012-12-17 16:02:15 -0800 | [diff] [blame] | 483 | |
Johan Hovold | 2153f94 | 2014-12-10 15:53:01 -0800 | [diff] [blame] | 484 | static const struct omap_rtc_device_type omap_rtc_am3352_type = { |
| 485 | .has_32kclk_en = true, |
Johan Hovold | 2153f94 | 2014-12-10 15:53:01 -0800 | [diff] [blame] | 486 | .has_irqwakeen = true, |
Johan Hovold | 222a12f | 2014-12-10 15:53:13 -0800 | [diff] [blame] | 487 | .has_pmic_mode = true, |
Lokesh Vutla | 9c28bd0 | 2015-04-16 12:46:00 -0700 | [diff] [blame] | 488 | .lock = am3352_rtc_lock, |
| 489 | .unlock = am3352_rtc_unlock, |
Johan Hovold | 2153f94 | 2014-12-10 15:53:01 -0800 | [diff] [blame] | 490 | }; |
| 491 | |
| 492 | static const struct omap_rtc_device_type omap_rtc_da830_type = { |
Lokesh Vutla | 9c28bd0 | 2015-04-16 12:46:00 -0700 | [diff] [blame] | 493 | .lock = am3352_rtc_lock, |
| 494 | .unlock = am3352_rtc_unlock, |
Johan Hovold | 2153f94 | 2014-12-10 15:53:01 -0800 | [diff] [blame] | 495 | }; |
| 496 | |
| 497 | static const struct platform_device_id omap_rtc_id_table[] = { |
Afzal Mohammed | cab1458 | 2012-12-17 16:02:11 -0800 | [diff] [blame] | 498 | { |
Johan Hovold | a430ca2 | 2014-12-10 15:52:58 -0800 | [diff] [blame] | 499 | .name = "omap_rtc", |
Johan Hovold | 2153f94 | 2014-12-10 15:53:01 -0800 | [diff] [blame] | 500 | .driver_data = (kernel_ulong_t)&omap_rtc_default_type, |
| 501 | }, { |
Hebbar Gururaja | 8af750e | 2013-09-11 14:24:18 -0700 | [diff] [blame] | 502 | .name = "am3352-rtc", |
Johan Hovold | 2153f94 | 2014-12-10 15:53:01 -0800 | [diff] [blame] | 503 | .driver_data = (kernel_ulong_t)&omap_rtc_am3352_type, |
| 504 | }, { |
Afzal Mohammed | cab1458 | 2012-12-17 16:02:11 -0800 | [diff] [blame] | 505 | .name = "da830-rtc", |
Johan Hovold | 2153f94 | 2014-12-10 15:53:01 -0800 | [diff] [blame] | 506 | .driver_data = (kernel_ulong_t)&omap_rtc_da830_type, |
| 507 | }, { |
| 508 | /* sentinel */ |
| 509 | } |
Afzal Mohammed | cab1458 | 2012-12-17 16:02:11 -0800 | [diff] [blame] | 510 | }; |
Johan Hovold | 2153f94 | 2014-12-10 15:53:01 -0800 | [diff] [blame] | 511 | MODULE_DEVICE_TABLE(platform, omap_rtc_id_table); |
Afzal Mohammed | cab1458 | 2012-12-17 16:02:11 -0800 | [diff] [blame] | 512 | |
Afzal Mohammed | 9e0344d | 2012-12-17 16:02:15 -0800 | [diff] [blame] | 513 | static const struct of_device_id omap_rtc_of_match[] = { |
Johan Hovold | 2153f94 | 2014-12-10 15:53:01 -0800 | [diff] [blame] | 514 | { |
| 515 | .compatible = "ti,am3352-rtc", |
| 516 | .data = &omap_rtc_am3352_type, |
| 517 | }, { |
| 518 | .compatible = "ti,da830-rtc", |
| 519 | .data = &omap_rtc_da830_type, |
| 520 | }, { |
| 521 | /* sentinel */ |
| 522 | } |
Afzal Mohammed | 9e0344d | 2012-12-17 16:02:15 -0800 | [diff] [blame] | 523 | }; |
| 524 | MODULE_DEVICE_TABLE(of, omap_rtc_of_match); |
| 525 | |
Lokesh Vutla | 5d9094b | 2015-04-16 12:46:05 -0700 | [diff] [blame] | 526 | static int omap_rtc_probe(struct platform_device *pdev) |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 527 | { |
Johan Hovold | 10211ae | 2014-12-10 15:53:19 -0800 | [diff] [blame] | 528 | struct omap_rtc *rtc; |
| 529 | struct resource *res; |
| 530 | u8 reg, mask, new_ctrl; |
Afzal Mohammed | cab1458 | 2012-12-17 16:02:11 -0800 | [diff] [blame] | 531 | const struct platform_device_id *id_entry; |
Afzal Mohammed | 9e0344d | 2012-12-17 16:02:15 -0800 | [diff] [blame] | 532 | const struct of_device_id *of_id; |
Johan Hovold | 437b37a | 2014-12-10 15:52:40 -0800 | [diff] [blame] | 533 | int ret; |
Afzal Mohammed | 9e0344d | 2012-12-17 16:02:15 -0800 | [diff] [blame] | 534 | |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 535 | rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL); |
| 536 | if (!rtc) |
| 537 | return -ENOMEM; |
| 538 | |
Afzal Mohammed | 9e0344d | 2012-12-17 16:02:15 -0800 | [diff] [blame] | 539 | of_id = of_match_device(omap_rtc_of_match, &pdev->dev); |
Johan Hovold | 2153f94 | 2014-12-10 15:53:01 -0800 | [diff] [blame] | 540 | if (of_id) { |
| 541 | rtc->type = of_id->data; |
Johan Hovold | 222a12f | 2014-12-10 15:53:13 -0800 | [diff] [blame] | 542 | rtc->is_pmic_controller = rtc->type->has_pmic_mode && |
| 543 | of_property_read_bool(pdev->dev.of_node, |
Johan Hovold | 094d3ee | 2014-12-10 15:54:14 -0800 | [diff] [blame] | 544 | "system-power-controller"); |
Johan Hovold | 2153f94 | 2014-12-10 15:53:01 -0800 | [diff] [blame] | 545 | } else { |
| 546 | id_entry = platform_get_device_id(pdev); |
| 547 | rtc->type = (void *)id_entry->driver_data; |
Sekhar Nori | 337b600 | 2014-06-06 14:36:04 -0700 | [diff] [blame] | 548 | } |
| 549 | |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 550 | rtc->irq_timer = platform_get_irq(pdev, 0); |
| 551 | if (rtc->irq_timer <= 0) |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 552 | return -ENOENT; |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 553 | |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 554 | rtc->irq_alarm = platform_get_irq(pdev, 1); |
| 555 | if (rtc->irq_alarm <= 0) |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 556 | return -ENOENT; |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 557 | |
Keerthy | 532409a | 2015-08-18 15:11:15 +0530 | [diff] [blame^] | 558 | rtc->clk = devm_clk_get(&pdev->dev, "int-clk"); |
| 559 | |
| 560 | if (!IS_ERR(rtc->clk)) |
| 561 | clk_prepare_enable(rtc->clk); |
| 562 | |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 563 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 564 | rtc->base = devm_ioremap_resource(&pdev->dev, res); |
| 565 | if (IS_ERR(rtc->base)) |
| 566 | return PTR_ERR(rtc->base); |
| 567 | |
| 568 | platform_set_drvdata(pdev, rtc); |
Mark A. Greer | 8cfde8c | 2009-12-15 16:46:11 -0800 | [diff] [blame] | 569 | |
Vaibhav Hiremath | fc9bd90 | 2012-12-17 16:02:18 -0800 | [diff] [blame] | 570 | /* Enable the clock/module so that we can access the registers */ |
| 571 | pm_runtime_enable(&pdev->dev); |
| 572 | pm_runtime_get_sync(&pdev->dev); |
| 573 | |
Lokesh Vutla | 9c28bd0 | 2015-04-16 12:46:00 -0700 | [diff] [blame] | 574 | rtc->type->unlock(rtc); |
Afzal Mohammed | cab1458 | 2012-12-17 16:02:11 -0800 | [diff] [blame] | 575 | |
Johan Hovold | 1ed8b5d | 2014-12-10 15:52:36 -0800 | [diff] [blame] | 576 | /* |
| 577 | * disable interrupts |
| 578 | * |
| 579 | * NOTE: ALARM2 is not cleared on AM3352 if rtc_write (writeb) is used |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 580 | */ |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 581 | rtc_writel(rtc, OMAP_RTC_INTERRUPTS_REG, 0); |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 582 | |
Sekhar Nori | cd914bb | 2014-06-06 14:36:06 -0700 | [diff] [blame] | 583 | /* enable RTC functional clock */ |
Johan Hovold | 2153f94 | 2014-12-10 15:53:01 -0800 | [diff] [blame] | 584 | if (rtc->type->has_32kclk_en) { |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 585 | reg = rtc_read(rtc, OMAP_RTC_OSC_REG); |
| 586 | rtc_writel(rtc, OMAP_RTC_OSC_REG, |
| 587 | reg | OMAP_RTC_OSC_32KCLK_EN); |
Johan Hovold | 44c63a5 | 2014-12-10 15:52:30 -0800 | [diff] [blame] | 588 | } |
Sekhar Nori | cd914bb | 2014-06-06 14:36:06 -0700 | [diff] [blame] | 589 | |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 590 | /* clear old status */ |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 591 | reg = rtc_read(rtc, OMAP_RTC_STATUS_REG); |
Johan Hovold | 9291e34 | 2014-12-10 15:53:04 -0800 | [diff] [blame] | 592 | |
| 593 | mask = OMAP_RTC_STATUS_ALARM; |
| 594 | |
Johan Hovold | 222a12f | 2014-12-10 15:53:13 -0800 | [diff] [blame] | 595 | if (rtc->type->has_pmic_mode) |
| 596 | mask |= OMAP_RTC_STATUS_ALARM2; |
| 597 | |
Johan Hovold | 9291e34 | 2014-12-10 15:53:04 -0800 | [diff] [blame] | 598 | if (rtc->type->has_power_up_reset) { |
| 599 | mask |= OMAP_RTC_STATUS_POWER_UP; |
| 600 | if (reg & OMAP_RTC_STATUS_POWER_UP) |
| 601 | dev_info(&pdev->dev, "RTC power up reset detected\n"); |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 602 | } |
Johan Hovold | 9291e34 | 2014-12-10 15:53:04 -0800 | [diff] [blame] | 603 | |
| 604 | if (reg & mask) |
| 605 | rtc_write(rtc, OMAP_RTC_STATUS_REG, reg & mask); |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 606 | |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 607 | /* On boards with split power, RTC_ON_NOFF won't reset the RTC */ |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 608 | reg = rtc_read(rtc, OMAP_RTC_CTRL_REG); |
Johan Hovold | 10211ae | 2014-12-10 15:53:19 -0800 | [diff] [blame] | 609 | if (reg & OMAP_RTC_CTRL_STOP) |
Johan Hovold | 397b630 | 2014-12-10 15:52:49 -0800 | [diff] [blame] | 610 | dev_info(&pdev->dev, "already running\n"); |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 611 | |
| 612 | /* force to 24 hour mode */ |
Johan Hovold | 10211ae | 2014-12-10 15:53:19 -0800 | [diff] [blame] | 613 | new_ctrl = reg & (OMAP_RTC_CTRL_SPLIT | OMAP_RTC_CTRL_AUTO_COMP); |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 614 | new_ctrl |= OMAP_RTC_CTRL_STOP; |
| 615 | |
Johan Hovold | 10211ae | 2014-12-10 15:53:19 -0800 | [diff] [blame] | 616 | /* |
| 617 | * BOARD-SPECIFIC CUSTOMIZATION CAN GO HERE: |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 618 | * |
Sekhar Nori | fa5b078 | 2010-10-27 15:33:05 -0700 | [diff] [blame] | 619 | * - Device wake-up capability setting should come through chip |
| 620 | * init logic. OMAP1 boards should initialize the "wakeup capable" |
| 621 | * flag in the platform device if the board is wired right for |
| 622 | * being woken up by RTC alarm. For OMAP-L138, this capability |
| 623 | * is built into the SoC by the "Deep Sleep" capability. |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 624 | * |
| 625 | * - Boards wired so RTC_ON_nOFF is used as the reset signal, |
| 626 | * rather than nPWRON_RESET, should forcibly enable split |
| 627 | * power mode. (Some chip errata report that RTC_CTRL_SPLIT |
| 628 | * is write-only, and always reads as zero...) |
| 629 | */ |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 630 | |
Johan Hovold | 10211ae | 2014-12-10 15:53:19 -0800 | [diff] [blame] | 631 | if (new_ctrl & OMAP_RTC_CTRL_SPLIT) |
Johan Hovold | 397b630 | 2014-12-10 15:52:49 -0800 | [diff] [blame] | 632 | dev_info(&pdev->dev, "split power mode\n"); |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 633 | |
| 634 | if (reg != new_ctrl) |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 635 | rtc_write(rtc, OMAP_RTC_CTRL_REG, new_ctrl); |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 636 | |
Lokesh Vutla | 9c28bd0 | 2015-04-16 12:46:00 -0700 | [diff] [blame] | 637 | rtc->type->lock(rtc); |
| 638 | |
Johan Hovold | 4390ce0 | 2014-12-10 15:52:43 -0800 | [diff] [blame] | 639 | device_init_wakeup(&pdev->dev, true); |
| 640 | |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 641 | rtc->rtc = devm_rtc_device_register(&pdev->dev, pdev->name, |
Johan Hovold | 4390ce0 | 2014-12-10 15:52:43 -0800 | [diff] [blame] | 642 | &omap_rtc_ops, THIS_MODULE); |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 643 | if (IS_ERR(rtc->rtc)) { |
| 644 | ret = PTR_ERR(rtc->rtc); |
Johan Hovold | 4390ce0 | 2014-12-10 15:52:43 -0800 | [diff] [blame] | 645 | goto err; |
| 646 | } |
Johan Hovold | 4390ce0 | 2014-12-10 15:52:43 -0800 | [diff] [blame] | 647 | |
| 648 | /* handle periodic and alarm irqs */ |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 649 | ret = devm_request_irq(&pdev->dev, rtc->irq_timer, rtc_irq, 0, |
| 650 | dev_name(&rtc->rtc->dev), rtc); |
Johan Hovold | 4390ce0 | 2014-12-10 15:52:43 -0800 | [diff] [blame] | 651 | if (ret) |
| 652 | goto err; |
| 653 | |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 654 | if (rtc->irq_timer != rtc->irq_alarm) { |
| 655 | ret = devm_request_irq(&pdev->dev, rtc->irq_alarm, rtc_irq, 0, |
| 656 | dev_name(&rtc->rtc->dev), rtc); |
Johan Hovold | 4390ce0 | 2014-12-10 15:52:43 -0800 | [diff] [blame] | 657 | if (ret) |
| 658 | goto err; |
| 659 | } |
| 660 | |
Johan Hovold | 222a12f | 2014-12-10 15:53:13 -0800 | [diff] [blame] | 661 | if (rtc->is_pmic_controller) { |
| 662 | if (!pm_power_off) { |
| 663 | omap_rtc_power_off_rtc = rtc; |
| 664 | pm_power_off = omap_rtc_power_off; |
| 665 | } |
| 666 | } |
| 667 | |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 668 | return 0; |
| 669 | |
Johan Hovold | 437b37a | 2014-12-10 15:52:40 -0800 | [diff] [blame] | 670 | err: |
Johan Hovold | 7ecd9a3 | 2014-12-10 15:52:33 -0800 | [diff] [blame] | 671 | device_init_wakeup(&pdev->dev, false); |
Lokesh Vutla | 9c28bd0 | 2015-04-16 12:46:00 -0700 | [diff] [blame] | 672 | rtc->type->lock(rtc); |
Vaibhav Hiremath | fc9bd90 | 2012-12-17 16:02:18 -0800 | [diff] [blame] | 673 | pm_runtime_put_sync(&pdev->dev); |
| 674 | pm_runtime_disable(&pdev->dev); |
Johan Hovold | 437b37a | 2014-12-10 15:52:40 -0800 | [diff] [blame] | 675 | |
| 676 | return ret; |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 677 | } |
| 678 | |
David Brownell | 71fc822 | 2008-07-23 21:30:38 -0700 | [diff] [blame] | 679 | static int __exit omap_rtc_remove(struct platform_device *pdev) |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 680 | { |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 681 | struct omap_rtc *rtc = platform_get_drvdata(pdev); |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 682 | |
Johan Hovold | 222a12f | 2014-12-10 15:53:13 -0800 | [diff] [blame] | 683 | if (pm_power_off == omap_rtc_power_off && |
| 684 | omap_rtc_power_off_rtc == rtc) { |
| 685 | pm_power_off = NULL; |
| 686 | omap_rtc_power_off_rtc = NULL; |
| 687 | } |
| 688 | |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 689 | device_init_wakeup(&pdev->dev, 0); |
| 690 | |
Keerthy | 532409a | 2015-08-18 15:11:15 +0530 | [diff] [blame^] | 691 | if (!IS_ERR(rtc->clk)) |
| 692 | clk_disable_unprepare(rtc->clk); |
| 693 | |
Lokesh Vutla | 9c28bd0 | 2015-04-16 12:46:00 -0700 | [diff] [blame] | 694 | rtc->type->unlock(rtc); |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 695 | /* leave rtc running, but disable irqs */ |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 696 | rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, 0); |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 697 | |
Lokesh Vutla | 9c28bd0 | 2015-04-16 12:46:00 -0700 | [diff] [blame] | 698 | rtc->type->lock(rtc); |
Vaibhav Hiremath | fc9bd90 | 2012-12-17 16:02:18 -0800 | [diff] [blame] | 699 | |
| 700 | /* Disable the clock/module */ |
| 701 | pm_runtime_put_sync(&pdev->dev); |
| 702 | pm_runtime_disable(&pdev->dev); |
| 703 | |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 704 | return 0; |
| 705 | } |
| 706 | |
Jingoo Han | 04ebc35 | 2013-04-29 16:21:01 -0700 | [diff] [blame] | 707 | #ifdef CONFIG_PM_SLEEP |
Jingoo Han | 04ebc35 | 2013-04-29 16:21:01 -0700 | [diff] [blame] | 708 | static int omap_rtc_suspend(struct device *dev) |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 709 | { |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 710 | struct omap_rtc *rtc = dev_get_drvdata(dev); |
| 711 | |
| 712 | rtc->interrupts_reg = rtc_read(rtc, OMAP_RTC_INTERRUPTS_REG); |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 713 | |
Lokesh Vutla | 9c28bd0 | 2015-04-16 12:46:00 -0700 | [diff] [blame] | 714 | rtc->type->unlock(rtc); |
Johan Hovold | 10211ae | 2014-12-10 15:53:19 -0800 | [diff] [blame] | 715 | /* |
| 716 | * FIXME: the RTC alarm is not currently acting as a wakeup event |
Hebbar Gururaja | 8af750e | 2013-09-11 14:24:18 -0700 | [diff] [blame] | 717 | * source on some platforms, and in fact this enable() call is just |
| 718 | * saving a flag that's never used... |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 719 | */ |
Lokesh Vutla | ab7f580 | 2014-06-06 14:36:12 -0700 | [diff] [blame] | 720 | if (device_may_wakeup(dev)) |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 721 | enable_irq_wake(rtc->irq_alarm); |
Lokesh Vutla | ab7f580 | 2014-06-06 14:36:12 -0700 | [diff] [blame] | 722 | else |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 723 | rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, 0); |
Lokesh Vutla | 9c28bd0 | 2015-04-16 12:46:00 -0700 | [diff] [blame] | 724 | rtc->type->lock(rtc); |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 725 | |
Vaibhav Hiremath | fc9bd90 | 2012-12-17 16:02:18 -0800 | [diff] [blame] | 726 | /* Disable the clock/module */ |
Jingoo Han | 04ebc35 | 2013-04-29 16:21:01 -0700 | [diff] [blame] | 727 | pm_runtime_put_sync(dev); |
Vaibhav Hiremath | fc9bd90 | 2012-12-17 16:02:18 -0800 | [diff] [blame] | 728 | |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 729 | return 0; |
| 730 | } |
| 731 | |
Jingoo Han | 04ebc35 | 2013-04-29 16:21:01 -0700 | [diff] [blame] | 732 | static int omap_rtc_resume(struct device *dev) |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 733 | { |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 734 | struct omap_rtc *rtc = dev_get_drvdata(dev); |
| 735 | |
Vaibhav Hiremath | fc9bd90 | 2012-12-17 16:02:18 -0800 | [diff] [blame] | 736 | /* Enable the clock/module so that we can access the registers */ |
Jingoo Han | 04ebc35 | 2013-04-29 16:21:01 -0700 | [diff] [blame] | 737 | pm_runtime_get_sync(dev); |
Vaibhav Hiremath | fc9bd90 | 2012-12-17 16:02:18 -0800 | [diff] [blame] | 738 | |
Lokesh Vutla | 9c28bd0 | 2015-04-16 12:46:00 -0700 | [diff] [blame] | 739 | rtc->type->unlock(rtc); |
Lokesh Vutla | ab7f580 | 2014-06-06 14:36:12 -0700 | [diff] [blame] | 740 | if (device_may_wakeup(dev)) |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 741 | disable_irq_wake(rtc->irq_alarm); |
Lokesh Vutla | ab7f580 | 2014-06-06 14:36:12 -0700 | [diff] [blame] | 742 | else |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 743 | rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, rtc->interrupts_reg); |
Lokesh Vutla | 9c28bd0 | 2015-04-16 12:46:00 -0700 | [diff] [blame] | 744 | rtc->type->lock(rtc); |
Lokesh Vutla | ab7f580 | 2014-06-06 14:36:12 -0700 | [diff] [blame] | 745 | |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 746 | return 0; |
| 747 | } |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 748 | #endif |
| 749 | |
Jingoo Han | 04ebc35 | 2013-04-29 16:21:01 -0700 | [diff] [blame] | 750 | static SIMPLE_DEV_PM_OPS(omap_rtc_pm_ops, omap_rtc_suspend, omap_rtc_resume); |
| 751 | |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 752 | static void omap_rtc_shutdown(struct platform_device *pdev) |
| 753 | { |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 754 | struct omap_rtc *rtc = platform_get_drvdata(pdev); |
Johan Hovold | 8ad5c72 | 2014-12-10 15:53:16 -0800 | [diff] [blame] | 755 | u8 mask; |
Johan Hovold | 55ba953 | 2014-12-10 15:52:55 -0800 | [diff] [blame] | 756 | |
Johan Hovold | 8ad5c72 | 2014-12-10 15:53:16 -0800 | [diff] [blame] | 757 | /* |
| 758 | * Keep the ALARM interrupt enabled to allow the system to power up on |
| 759 | * alarm events. |
| 760 | */ |
Lokesh Vutla | 9c28bd0 | 2015-04-16 12:46:00 -0700 | [diff] [blame] | 761 | rtc->type->unlock(rtc); |
Johan Hovold | 8ad5c72 | 2014-12-10 15:53:16 -0800 | [diff] [blame] | 762 | mask = rtc_read(rtc, OMAP_RTC_INTERRUPTS_REG); |
| 763 | mask &= OMAP_RTC_INTERRUPTS_IT_ALARM; |
| 764 | rtc_write(rtc, OMAP_RTC_INTERRUPTS_REG, mask); |
Lokesh Vutla | 9c28bd0 | 2015-04-16 12:46:00 -0700 | [diff] [blame] | 765 | rtc->type->lock(rtc); |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 766 | } |
| 767 | |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 768 | static struct platform_driver omap_rtc_driver = { |
Lokesh Vutla | 5d9094b | 2015-04-16 12:46:05 -0700 | [diff] [blame] | 769 | .probe = omap_rtc_probe, |
David Brownell | 71fc822 | 2008-07-23 21:30:38 -0700 | [diff] [blame] | 770 | .remove = __exit_p(omap_rtc_remove), |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 771 | .shutdown = omap_rtc_shutdown, |
| 772 | .driver = { |
Johan Hovold | a430ca2 | 2014-12-10 15:52:58 -0800 | [diff] [blame] | 773 | .name = "omap_rtc", |
Jingoo Han | 04ebc35 | 2013-04-29 16:21:01 -0700 | [diff] [blame] | 774 | .pm = &omap_rtc_pm_ops, |
Sachin Kamat | 616b734 | 2013-11-12 15:10:55 -0800 | [diff] [blame] | 775 | .of_match_table = omap_rtc_of_match, |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 776 | }, |
Johan Hovold | 2153f94 | 2014-12-10 15:53:01 -0800 | [diff] [blame] | 777 | .id_table = omap_rtc_id_table, |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 778 | }; |
| 779 | |
Lokesh Vutla | 5d9094b | 2015-04-16 12:46:05 -0700 | [diff] [blame] | 780 | module_platform_driver(omap_rtc_driver); |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 781 | |
Johan Hovold | a430ca2 | 2014-12-10 15:52:58 -0800 | [diff] [blame] | 782 | MODULE_ALIAS("platform:omap_rtc"); |
David Brownell | db68b18 | 2006-12-06 20:38:36 -0800 | [diff] [blame] | 783 | MODULE_AUTHOR("George G. Davis (and others)"); |
| 784 | MODULE_LICENSE("GPL"); |