diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-08-05 09:48:22 -0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-08-05 09:48:22 -0400 |
| commit | 6c84239d595dc6ffe39f0f03dae2f64ed200db95 (patch) | |
| tree | 3aea4368a644be16e44612c964aa26152854e1ae /include/asm-generic | |
| parent | d4c06c708123c652025d04fe77b7e39448077395 (diff) | |
| parent | 6f367788d6333a41fefd013975b0b160d5c0a1c8 (diff) | |
Merge tag 'rtc-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
Pull RTC updates from Alexandre Belloni:
"RTC for 4.8
Cleanups:
- huge cleanup of rtc-generic and char/genrtc this allowed to cleanup
rtc-cmos, rtc-sh, rtc-m68k, rtc-powerpc and rtc-parisc
- move mn10300 to rtc-cmos
Subsystem:
- fix wakealarms after hibernate
- multiples fixes for rctest
- simplify implementations of .read_alarm
New drivers:
- Maxim MAX6916
Drivers:
- ds1307: fix weekday
- m41t80: add wakeup support
- pcf85063: add support for PCF85063A variant
- rv8803: extend i2c fix and other fixes
- s35390a: fix alarm reading, this fixes instant reboot after
shutdown for QNAP TS-41x
- s3c: clock fixes"
* tag 'rtc-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (65 commits)
rtc: rv8803: Clear V1F when setting the time
rtc: rv8803: Stop the clock while setting the time
rtc: rv8803: Always apply the I²C workaround
rtc: rv8803: Fix read day of week
rtc: rv8803: Remove the check for valid time
rtc: rv8803: Kconfig: Indicate rx8900 support
rtc: asm9260: remove .owner field for driver
rtc: at91sam9: Fix missing spin_lock_init()
rtc: m41t80: add suspend handlers for alarm IRQ
rtc: m41t80: make it a real error message
rtc: pcf85063: Add support for the PCF85063A device
rtc: pcf85063: fix year range
rtc: hym8563: in .read_alarm set .tm_sec to 0 to signal minute accuracy
rtc: explicitly set tm_sec = 0 for drivers with minute accurancy
rtc: s3c: Add s3c_rtc_{enable/disable}_clk in s3c_rtc_setfreq()
rtc: s3c: Remove unnecessary call to disable already disabled clock
rtc: abx80x: use devm_add_action_or_reset()
rtc: m41t80: use devm_add_action_or_reset()
rtc: fix a typo and reduce three empty lines to one
rtc: s35390a: improve two comments in .set_alarm
...
Diffstat (limited to 'include/asm-generic')
| -rw-r--r-- | include/asm-generic/rtc.h | 247 |
1 files changed, 0 insertions, 247 deletions
diff --git a/include/asm-generic/rtc.h b/include/asm-generic/rtc.h deleted file mode 100644 index 4e3b6558331e..000000000000 --- a/include/asm-generic/rtc.h +++ /dev/null | |||
| @@ -1,247 +0,0 @@ | |||
| 1 | /* | ||
| 2 | * include/asm-generic/rtc.h | ||
| 3 | * | ||
| 4 | * Author: Tom Rini <trini@mvista.com> | ||
| 5 | * | ||
| 6 | * Based on: | ||
| 7 | * drivers/char/rtc.c | ||
| 8 | * | ||
| 9 | * Please read the COPYING file for all license details. | ||
| 10 | */ | ||
| 11 | |||
| 12 | #ifndef __ASM_RTC_H__ | ||
| 13 | #define __ASM_RTC_H__ | ||
| 14 | |||
| 15 | #include <linux/mc146818rtc.h> | ||
| 16 | #include <linux/rtc.h> | ||
| 17 | #include <linux/bcd.h> | ||
| 18 | #include <linux/delay.h> | ||
| 19 | #ifdef CONFIG_ACPI | ||
| 20 | #include <linux/acpi.h> | ||
| 21 | #endif | ||
| 22 | |||
| 23 | #define RTC_PIE 0x40 /* periodic interrupt enable */ | ||
| 24 | #define RTC_AIE 0x20 /* alarm interrupt enable */ | ||
| 25 | #define RTC_UIE 0x10 /* update-finished interrupt enable */ | ||
| 26 | |||
| 27 | /* some dummy definitions */ | ||
| 28 | #define RTC_BATT_BAD 0x100 /* battery bad */ | ||
| 29 | #define RTC_SQWE 0x08 /* enable square-wave output */ | ||
| 30 | #define RTC_DM_BINARY 0x04 /* all time/date values are BCD if clear */ | ||
| 31 | #define RTC_24H 0x02 /* 24 hour mode - else hours bit 7 means pm */ | ||
| 32 | #define RTC_DST_EN 0x01 /* auto switch DST - works f. USA only */ | ||
| 33 | |||
| 34 | /* | ||
| 35 | * Returns true if a clock update is in progress | ||
| 36 | */ | ||
| 37 | static inline unsigned char rtc_is_updating(void) | ||
| 38 | { | ||
| 39 | unsigned char uip; | ||
| 40 | unsigned long flags; | ||
| 41 | |||
| 42 | spin_lock_irqsave(&rtc_lock, flags); | ||
| 43 | uip = (CMOS_READ(RTC_FREQ_SELECT) & RTC_UIP); | ||
| 44 | spin_unlock_irqrestore(&rtc_lock, flags); | ||
| 45 | return uip; | ||
| 46 | } | ||
| 47 | |||
| 48 | static inline unsigned int __get_rtc_time(struct rtc_time *time) | ||
| 49 | { | ||
| 50 | unsigned char ctrl; | ||
| 51 | unsigned long flags; | ||
| 52 | unsigned char century = 0; | ||
| 53 | |||
| 54 | #ifdef CONFIG_MACH_DECSTATION | ||
| 55 | unsigned int real_year; | ||
| 56 | #endif | ||
| 57 | |||
| 58 | /* | ||
| 59 | * read RTC once any update in progress is done. The update | ||
| 60 | * can take just over 2ms. We wait 20ms. There is no need to | ||
| 61 | * to poll-wait (up to 1s - eeccch) for the falling edge of RTC_UIP. | ||
| 62 | * If you need to know *exactly* when a second has started, enable | ||
| 63 | * periodic update complete interrupts, (via ioctl) and then | ||
| 64 | * immediately read /dev/rtc which will block until you get the IRQ. | ||
| 65 | * Once the read clears, read the RTC time (again via ioctl). Easy. | ||
| 66 | */ | ||
| 67 | if (rtc_is_updating()) | ||
| 68 | mdelay(20); | ||
| 69 | |||
| 70 | /* | ||
| 71 | * Only the values that we read from the RTC are set. We leave | ||
| 72 | * tm_wday, tm_yday and tm_isdst untouched. Even though the | ||
| 73 | * RTC has RTC_DAY_OF_WEEK, we ignore it, as it is only updated | ||
| 74 | * by the RTC when initially set to a non-zero value. | ||
| 75 | */ | ||
| 76 | spin_lock_irqsave(&rtc_lock, flags); | ||
| 77 | time->tm_sec = CMOS_READ(RTC_SECONDS); | ||
| 78 | time->tm_min = CMOS_READ(RTC_MINUTES); | ||
| 79 | time->tm_hour = CMOS_READ(RTC_HOURS); | ||
| 80 | time->tm_mday = CMOS_READ(RTC_DAY_OF_MONTH); | ||
| 81 | time->tm_mon = CMOS_READ(RTC_MONTH); | ||
| 82 | time->tm_year = CMOS_READ(RTC_YEAR); | ||
| 83 | #ifdef CONFIG_MACH_DECSTATION | ||
| 84 | real_year = CMOS_READ(RTC_DEC_YEAR); | ||
| 85 | #endif | ||
| 86 | #ifdef CONFIG_ACPI | ||
| 87 | if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID && | ||
| 88 | acpi_gbl_FADT.century) | ||
| 89 | century = CMOS_READ(acpi_gbl_FADT.century); | ||
| 90 | #endif | ||
| 91 | ctrl = CMOS_READ(RTC_CONTROL); | ||
| 92 | spin_unlock_irqrestore(&rtc_lock, flags); | ||
| 93 | |||
| 94 | if (!(ctrl & RTC_DM_BINARY) || RTC_ALWAYS_BCD) | ||
| 95 | { | ||
| 96 | time->tm_sec = bcd2bin(time->tm_sec); | ||
| 97 | time->tm_min = bcd2bin(time->tm_min); | ||
| 98 | time->tm_hour = bcd2bin(time->tm_hour); | ||
| 99 | time->tm_mday = bcd2bin(time->tm_mday); | ||
| 100 | time->tm_mon = bcd2bin(time->tm_mon); | ||
| 101 | time->tm_year = bcd2bin(time->tm_year); | ||
| 102 | century = bcd2bin(century); | ||
| 103 | } | ||
| 104 | |||
| 105 | #ifdef CONFIG_MACH_DECSTATION | ||
| 106 | time->tm_year += real_year - 72; | ||
| 107 | #endif | ||
| 108 | |||
| 109 | if (century) | ||
| 110 | time->tm_year += (century - 19) * 100; | ||
| 111 | |||
| 112 | /* | ||
| 113 | * Account for differences between how the RTC uses the values | ||
| 114 | * and how they are defined in a struct rtc_time; | ||
| 115 | */ | ||
| 116 | if (time->tm_year <= 69) | ||
| 117 | time->tm_year += 100; | ||
| 118 | |||
| 119 | time->tm_mon--; | ||
| 120 | |||
| 121 | return RTC_24H; | ||
| 122 | } | ||
| 123 | |||
| 124 | #ifndef get_rtc_time | ||
| 125 | #define get_rtc_time __get_rtc_time | ||
| 126 | #endif | ||
| 127 | |||
| 128 | /* Set the current date and time in the real time clock. */ | ||
| 129 | static inline int __set_rtc_time(struct rtc_time *time) | ||
| 130 | { | ||
| 131 | unsigned long flags; | ||
| 132 | unsigned char mon, day, hrs, min, sec; | ||
| 133 | unsigned char save_control, save_freq_select; | ||
| 134 | unsigned int yrs; | ||
| 135 | #ifdef CONFIG_MACH_DECSTATION | ||
| 136 | unsigned int real_yrs, leap_yr; | ||
| 137 | #endif | ||
| 138 | unsigned char century = 0; | ||
| 139 | |||
| 140 | yrs = time->tm_year; | ||
| 141 | mon = time->tm_mon + 1; /* tm_mon starts at zero */ | ||
| 142 | day = time->tm_mday; | ||
| 143 | hrs = time->tm_hour; | ||
| 144 | min = time->tm_min; | ||
| 145 | sec = time->tm_sec; | ||
| 146 | |||
| 147 | if (yrs > 255) /* They are unsigned */ | ||
| 148 | return -EINVAL; | ||
| 149 | |||
| 150 | spin_lock_irqsave(&rtc_lock, flags); | ||
| 151 | #ifdef CONFIG_MACH_DECSTATION | ||
| 152 | real_yrs = yrs; | ||
| 153 | leap_yr = ((!((yrs + 1900) % 4) && ((yrs + 1900) % 100)) || | ||
| 154 | !((yrs + 1900) % 400)); | ||
| 155 | yrs = 72; | ||
| 156 | |||
| 157 | /* | ||
| 158 | * We want to keep the year set to 73 until March | ||
| 159 | * for non-leap years, so that Feb, 29th is handled | ||
| 160 | * correctly. | ||
| 161 | */ | ||
| 162 | if (!leap_yr && mon < 3) { | ||
| 163 | real_yrs--; | ||
| 164 | yrs = 73; | ||
| 165 | } | ||
| 166 | #endif | ||
| 167 | |||
| 168 | #ifdef CONFIG_ACPI | ||
| 169 | if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID && | ||
| 170 | acpi_gbl_FADT.century) { | ||
| 171 | century = (yrs + 1900) / 100; | ||
| 172 | yrs %= 100; | ||
| 173 | } | ||
| 174 | #endif | ||
| 175 | |||
| 176 | /* These limits and adjustments are independent of | ||
| 177 | * whether the chip is in binary mode or not. | ||
| 178 | */ | ||
| 179 | if (yrs > 169) { | ||
| 180 | spin_unlock_irqrestore(&rtc_lock, flags); | ||
| 181 | return -EINVAL; | ||
| 182 | } | ||
| 183 | |||
| 184 | if (yrs >= 100) | ||
| 185 | yrs -= 100; | ||
| 186 | |||
| 187 | if (!(CMOS_READ(RTC_CONTROL) & RTC_DM_BINARY) | ||
| 188 | || RTC_ALWAYS_BCD) { | ||
| 189 | sec = bin2bcd(sec); | ||
| 190 | min = bin2bcd(min); | ||
| 191 | hrs = bin2bcd(hrs); | ||
| 192 | day = bin2bcd(day); | ||
| 193 | mon = bin2bcd(mon); | ||
| 194 | yrs = bin2bcd(yrs); | ||
| 195 | century = bin2bcd(century); | ||
| 196 | } | ||
| 197 | |||
| 198 | save_control = CMOS_READ(RTC_CONTROL); | ||
| 199 | CMOS_WRITE((save_control|RTC_SET), RTC_CONTROL); | ||
| 200 | save_freq_select = CMOS_READ(RTC_FREQ_SELECT); | ||
| 201 | CMOS_WRITE((save_freq_select|RTC_DIV_RESET2), RTC_FREQ_SELECT); | ||
| 202 | |||
| 203 | #ifdef CONFIG_MACH_DECSTATION | ||
| 204 | CMOS_WRITE(real_yrs, RTC_DEC_YEAR); | ||
| 205 | #endif | ||
| 206 | CMOS_WRITE(yrs, RTC_YEAR); | ||
| 207 | CMOS_WRITE(mon, RTC_MONTH); | ||
| 208 | CMOS_WRITE(day, RTC_DAY_OF_MONTH); | ||
| 209 | CMOS_WRITE(hrs, RTC_HOURS); | ||
| 210 | CMOS_WRITE(min, RTC_MINUTES); | ||
| 211 | CMOS_WRITE(sec, RTC_SECONDS); | ||
| 212 | #ifdef CONFIG_ACPI | ||
| 213 | if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID && | ||
| 214 | acpi_gbl_FADT.century) | ||
| 215 | CMOS_WRITE(century, acpi_gbl_FADT.century); | ||
| 216 | #endif | ||
| 217 | |||
| 218 | CMOS_WRITE(save_control, RTC_CONTROL); | ||
| 219 | CMOS_WRITE(save_freq_select, RTC_FREQ_SELECT); | ||
| 220 | |||
| 221 | spin_unlock_irqrestore(&rtc_lock, flags); | ||
| 222 | |||
| 223 | return 0; | ||
| 224 | } | ||
| 225 | |||
| 226 | #ifndef set_rtc_time | ||
| 227 | #define set_rtc_time __set_rtc_time | ||
| 228 | #endif | ||
| 229 | |||
| 230 | static inline unsigned int get_rtc_ss(void) | ||
| 231 | { | ||
| 232 | struct rtc_time h; | ||
| 233 | |||
| 234 | get_rtc_time(&h); | ||
| 235 | return h.tm_sec; | ||
| 236 | } | ||
| 237 | |||
| 238 | static inline int get_rtc_pll(struct rtc_pll_info *pll) | ||
| 239 | { | ||
| 240 | return -EINVAL; | ||
| 241 | } | ||
| 242 | static inline int set_rtc_pll(struct rtc_pll_info *pll) | ||
| 243 | { | ||
| 244 | return -EINVAL; | ||
| 245 | } | ||
| 246 | |||
| 247 | #endif /* __ASM_RTC_H__ */ | ||
