litmus-rt-ext-res.git - LITMUS^RT with extended reservations for Forbidden Zones paper @ RTAS'20

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author	Chuansheng Liu <chuansheng.liu@intel.com>	2012-12-24 09:19:56 -0500
committer	Linus Torvalds <torvalds@linux-foundation.org>	2013-01-16 15:36:22 -0500
commit	fbfc23ef905e41cbf621031a3d560a55a010dd54 (patch)
tree	3593658adf526bb3a786e0e590424b91154390af /drivers/acpi/glue.c
parent	30a4840a4cd74301058a1f054f335185f978ace8 (diff)

mfd, TWL4030: TWL4030 need select REGMAP_I2C

Fix the build error: drivers/built-in.o: In function `twl_probe': drivers/mfd/twl-core.c:1256: undefined reference to `devm_regmap_init_i2c' make: *** [vmlinux] Error 1 Signed-off-by: liu chuansheng <chuansheng.liu@intel.com> Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com> [ Samuel is busy, taking it directly - Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Diffstat (limited to 'drivers/acpi/glue.c')

0 files changed, 0 insertions, 0 deletions

/* * Driver for TI BQ32000 RTC. * * Copyright (C) 2009 Semihalf. * Copyright (C) 2014 Pavel Machek <pavel@denx.de> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * You can get hardware description at * http://www.ti.com/lit/ds/symlink/bq32000.pdf */ #include <linux/module.h> #include <linux/i2c.h> #include <linux/rtc.h> #include <linux/init.h> #include <linux/errno.h> #include <linux/bcd.h> #define BQ32K_SECONDS 0x00 /* Seconds register address */ #define BQ32K_SECONDS_MASK 0x7F /* Mask over seconds value */ #define BQ32K_STOP 0x80 /* Oscillator Stop flat */ #define BQ32K_MINUTES 0x01 /* Minutes register address */ #define BQ32K_MINUTES_MASK 0x7F /* Mask over minutes value */ #define BQ32K_OF 0x80 /* Oscillator Failure flag */ #define BQ32K_HOURS_MASK 0x3F /* Mask over hours value */ #define BQ32K_CENT 0x40 /* Century flag */ #define BQ32K_CENT_EN 0x80 /* Century flag enable bit */ #define BQ32K_CALIBRATION 0x07 /* CAL_CFG1, calibration and control */ #define BQ32K_TCH2 0x08 /* Trickle charge enable */ #define BQ32K_CFG2 0x09 /* Trickle charger control */ struct bq32k_regs { uint8_t seconds; uint8_t minutes; uint8_t cent_hours; uint8_t day; uint8_t date; uint8_t month; uint8_t years; }; static struct i2c_driver bq32k_driver; static int bq32k_read(struct device *dev, void *data, uint8_t off, uint8_t len) { struct i2c_client *client = to_i2c_client(dev); struct i2c_msg msgs[] = { { .addr = client->addr, .flags = 0, .len = 1, .buf = &off, }, { .addr = client->addr, .flags = I2C_M_RD, .len = len, .buf = data, } }; if (i2c_transfer(client->adapter, msgs, 2) == 2) return 0; return -EIO; } static int bq32k_write(struct device *dev, void *data, uint8_t off, uint8_t len) { struct i2c_client *client = to_i2c_client(dev); uint8_t buffer[len + 1]; buffer[0] = off; memcpy(&buffer[1], data, len); if (i2c_master_send(client, buffer, len + 1) == len + 1) return 0; return -EIO; } static int bq32k_rtc_read_time(struct device *dev, struct rtc_time *tm) { struct bq32k_regs regs; int error; error = bq32k_read(dev, &regs, 0, sizeof(regs)); if (error) return error; /* * In case of oscillator failure, the register contents should be * considered invalid. The flag is cleared the next time the RTC is set. */ if (regs.minutes & BQ32K_OF) return -EINVAL; tm->tm_sec = bcd2bin(regs.seconds & BQ32K_SECONDS_MASK); tm->tm_min = bcd2bin(regs.minutes & BQ32K_MINUTES_MASK);


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