mirror of https://gitee.com/openkylin/linux.git
1096 lines
28 KiB
C
1096 lines
28 KiB
C
/*
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* tps65010 - driver for tps6501x power management chips
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*
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* Copyright (C) 2004 Texas Instruments
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* Copyright (C) 2004-2005 David Brownell
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/interrupt.h>
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#include <linux/i2c.h>
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#include <linux/delay.h>
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#include <linux/workqueue.h>
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#include <linux/debugfs.h>
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#include <linux/seq_file.h>
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#include <linux/mutex.h>
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#include <linux/platform_device.h>
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#include <linux/i2c/tps65010.h>
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#include <linux/gpio.h>
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/*-------------------------------------------------------------------------*/
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#define DRIVER_VERSION "2 May 2005"
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#define DRIVER_NAME (tps65010_driver.driver.name)
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MODULE_DESCRIPTION("TPS6501x Power Management Driver");
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MODULE_LICENSE("GPL");
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static struct i2c_driver tps65010_driver;
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/*-------------------------------------------------------------------------*/
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/* This driver handles a family of multipurpose chips, which incorporate
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* voltage regulators, lithium ion/polymer battery charging, GPIOs, LEDs,
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* and other features often needed in portable devices like cell phones
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* or digital cameras.
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*
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* The tps65011 and tps65013 have different voltage settings compared
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* to tps65010 and tps65012. The tps65013 has a NO_CHG status/irq.
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* All except tps65010 have "wait" mode, possibly defaulted so that
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* battery-insert != device-on.
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*
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* We could distinguish between some models by checking VDCDC1.UVLO or
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* other registers, unless they've been changed already after powerup
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* as part of board setup by a bootloader.
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*/
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enum tps_model {
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TPS65010,
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TPS65011,
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TPS65012,
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TPS65013,
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};
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struct tps65010 {
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struct i2c_client *client;
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struct mutex lock;
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struct delayed_work work;
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struct dentry *file;
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unsigned charging:1;
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unsigned por:1;
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unsigned model:8;
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u16 vbus;
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unsigned long flags;
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#define FLAG_VBUS_CHANGED 0
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#define FLAG_IRQ_ENABLE 1
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/* copies of last register state */
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u8 chgstatus, regstatus, chgconf;
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u8 nmask1, nmask2;
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u8 outmask;
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struct gpio_chip chip;
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struct platform_device *leds;
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};
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#define POWER_POLL_DELAY msecs_to_jiffies(5000)
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/*-------------------------------------------------------------------------*/
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#if defined(DEBUG) || defined(CONFIG_DEBUG_FS)
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static void dbg_chgstat(char *buf, size_t len, u8 chgstatus)
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{
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snprintf(buf, len, "%02x%s%s%s%s%s%s%s%s\n",
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chgstatus,
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(chgstatus & TPS_CHG_USB) ? " USB" : "",
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(chgstatus & TPS_CHG_AC) ? " AC" : "",
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(chgstatus & TPS_CHG_THERM) ? " therm" : "",
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(chgstatus & TPS_CHG_TERM) ? " done" :
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((chgstatus & (TPS_CHG_USB|TPS_CHG_AC))
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? " (charging)" : ""),
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(chgstatus & TPS_CHG_TAPER_TMO) ? " taper_tmo" : "",
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(chgstatus & TPS_CHG_CHG_TMO) ? " charge_tmo" : "",
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(chgstatus & TPS_CHG_PRECHG_TMO) ? " prechg_tmo" : "",
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(chgstatus & TPS_CHG_TEMP_ERR) ? " temp_err" : "");
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}
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static void dbg_regstat(char *buf, size_t len, u8 regstatus)
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{
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snprintf(buf, len, "%02x %s%s%s%s%s%s%s%s\n",
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regstatus,
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(regstatus & TPS_REG_ONOFF) ? "off" : "(on)",
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(regstatus & TPS_REG_COVER) ? " uncover" : "",
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(regstatus & TPS_REG_UVLO) ? " UVLO" : "",
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(regstatus & TPS_REG_NO_CHG) ? " NO_CHG" : "",
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(regstatus & TPS_REG_PG_LD02) ? " ld02_bad" : "",
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(regstatus & TPS_REG_PG_LD01) ? " ld01_bad" : "",
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(regstatus & TPS_REG_PG_MAIN) ? " main_bad" : "",
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(regstatus & TPS_REG_PG_CORE) ? " core_bad" : "");
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}
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static void dbg_chgconf(int por, char *buf, size_t len, u8 chgconfig)
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{
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const char *hibit;
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if (por)
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hibit = (chgconfig & TPS_CHARGE_POR)
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? "POR=69ms" : "POR=1sec";
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else
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hibit = (chgconfig & TPS65013_AUA) ? "AUA" : "";
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snprintf(buf, len, "%02x %s%s%s AC=%d%% USB=%dmA %sCharge\n",
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chgconfig, hibit,
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(chgconfig & TPS_CHARGE_RESET) ? " reset" : "",
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(chgconfig & TPS_CHARGE_FAST) ? " fast" : "",
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({int p; switch ((chgconfig >> 3) & 3) {
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case 3: p = 100; break;
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case 2: p = 75; break;
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case 1: p = 50; break;
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default: p = 25; break;
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}; p; }),
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(chgconfig & TPS_VBUS_CHARGING)
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? ((chgconfig & TPS_VBUS_500MA) ? 500 : 100)
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: 0,
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(chgconfig & TPS_CHARGE_ENABLE) ? "" : "No");
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}
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#endif
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#ifdef DEBUG
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static void show_chgstatus(const char *label, u8 chgstatus)
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{
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char buf [100];
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dbg_chgstat(buf, sizeof buf, chgstatus);
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pr_debug("%s: %s %s", DRIVER_NAME, label, buf);
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}
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static void show_regstatus(const char *label, u8 regstatus)
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{
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char buf [100];
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dbg_regstat(buf, sizeof buf, regstatus);
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pr_debug("%s: %s %s", DRIVER_NAME, label, buf);
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}
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static void show_chgconfig(int por, const char *label, u8 chgconfig)
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{
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char buf [100];
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dbg_chgconf(por, buf, sizeof buf, chgconfig);
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pr_debug("%s: %s %s", DRIVER_NAME, label, buf);
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}
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#else
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static inline void show_chgstatus(const char *label, u8 chgstatus) { }
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static inline void show_regstatus(const char *label, u8 chgstatus) { }
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static inline void show_chgconfig(int por, const char *label, u8 chgconfig) { }
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#endif
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#ifdef CONFIG_DEBUG_FS
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static int dbg_show(struct seq_file *s, void *_)
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{
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struct tps65010 *tps = s->private;
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u8 value, v2;
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unsigned i;
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char buf[100];
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const char *chip;
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switch (tps->model) {
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case TPS65010: chip = "tps65010"; break;
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case TPS65011: chip = "tps65011"; break;
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case TPS65012: chip = "tps65012"; break;
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case TPS65013: chip = "tps65013"; break;
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default: chip = NULL; break;
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}
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seq_printf(s, "driver %s\nversion %s\nchip %s\n\n",
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DRIVER_NAME, DRIVER_VERSION, chip);
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mutex_lock(&tps->lock);
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/* FIXME how can we tell whether a battery is present?
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* likely involves a charge gauging chip (like BQ26501).
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*/
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seq_printf(s, "%scharging\n\n", tps->charging ? "" : "(not) ");
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/* registers for monitoring battery charging and status; note
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* that reading chgstat and regstat may ack IRQs...
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*/
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value = i2c_smbus_read_byte_data(tps->client, TPS_CHGCONFIG);
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dbg_chgconf(tps->por, buf, sizeof buf, value);
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seq_printf(s, "chgconfig %s", buf);
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value = i2c_smbus_read_byte_data(tps->client, TPS_CHGSTATUS);
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dbg_chgstat(buf, sizeof buf, value);
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seq_printf(s, "chgstat %s", buf);
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value = i2c_smbus_read_byte_data(tps->client, TPS_MASK1);
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dbg_chgstat(buf, sizeof buf, value);
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seq_printf(s, "mask1 %s", buf);
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/* ignore ackint1 */
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value = i2c_smbus_read_byte_data(tps->client, TPS_REGSTATUS);
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dbg_regstat(buf, sizeof buf, value);
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seq_printf(s, "regstat %s", buf);
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value = i2c_smbus_read_byte_data(tps->client, TPS_MASK2);
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dbg_regstat(buf, sizeof buf, value);
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seq_printf(s, "mask2 %s\n", buf);
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/* ignore ackint2 */
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queue_delayed_work(system_power_efficient_wq, &tps->work,
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POWER_POLL_DELAY);
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/* VMAIN voltage, enable lowpower, etc */
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value = i2c_smbus_read_byte_data(tps->client, TPS_VDCDC1);
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seq_printf(s, "vdcdc1 %02x\n", value);
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/* VCORE voltage, vibrator on/off */
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value = i2c_smbus_read_byte_data(tps->client, TPS_VDCDC2);
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seq_printf(s, "vdcdc2 %02x\n", value);
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/* both LD0s, and their lowpower behavior */
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value = i2c_smbus_read_byte_data(tps->client, TPS_VREGS1);
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seq_printf(s, "vregs1 %02x\n\n", value);
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/* LEDs and GPIOs */
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value = i2c_smbus_read_byte_data(tps->client, TPS_LED1_ON);
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v2 = i2c_smbus_read_byte_data(tps->client, TPS_LED1_PER);
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seq_printf(s, "led1 %s, on=%02x, per=%02x, %d/%d msec\n",
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(value & 0x80)
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? ((v2 & 0x80) ? "on" : "off")
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: ((v2 & 0x80) ? "blink" : "(nPG)"),
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value, v2,
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(value & 0x7f) * 10, (v2 & 0x7f) * 100);
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value = i2c_smbus_read_byte_data(tps->client, TPS_LED2_ON);
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v2 = i2c_smbus_read_byte_data(tps->client, TPS_LED2_PER);
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seq_printf(s, "led2 %s, on=%02x, per=%02x, %d/%d msec\n",
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(value & 0x80)
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? ((v2 & 0x80) ? "on" : "off")
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: ((v2 & 0x80) ? "blink" : "off"),
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value, v2,
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(value & 0x7f) * 10, (v2 & 0x7f) * 100);
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value = i2c_smbus_read_byte_data(tps->client, TPS_DEFGPIO);
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v2 = i2c_smbus_read_byte_data(tps->client, TPS_MASK3);
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seq_printf(s, "defgpio %02x mask3 %02x\n", value, v2);
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for (i = 0; i < 4; i++) {
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if (value & (1 << (4 + i)))
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seq_printf(s, " gpio%d-out %s\n", i + 1,
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(value & (1 << i)) ? "low" : "hi ");
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else
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seq_printf(s, " gpio%d-in %s %s %s\n", i + 1,
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(value & (1 << i)) ? "hi " : "low",
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(v2 & (1 << i)) ? "no-irq" : "irq",
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(v2 & (1 << (4 + i))) ? "rising" : "falling");
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}
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mutex_unlock(&tps->lock);
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return 0;
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}
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static int dbg_tps_open(struct inode *inode, struct file *file)
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{
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return single_open(file, dbg_show, inode->i_private);
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}
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static const struct file_operations debug_fops = {
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.open = dbg_tps_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = single_release,
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};
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#define DEBUG_FOPS &debug_fops
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#else
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#define DEBUG_FOPS NULL
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#endif
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/*-------------------------------------------------------------------------*/
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/* handle IRQS in a task context, so we can use I2C calls */
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static void tps65010_interrupt(struct tps65010 *tps)
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{
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u8 tmp = 0, mask, poll;
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/* IRQs won't trigger for certain events, but we can get
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* others by polling (normally, with external power applied).
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*/
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poll = 0;
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/* regstatus irqs */
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if (tps->nmask2) {
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tmp = i2c_smbus_read_byte_data(tps->client, TPS_REGSTATUS);
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mask = tmp ^ tps->regstatus;
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tps->regstatus = tmp;
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mask &= tps->nmask2;
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} else
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mask = 0;
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if (mask) {
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tps->regstatus = tmp;
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/* may need to shut something down ... */
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/* "off" usually means deep sleep */
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if (tmp & TPS_REG_ONOFF) {
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pr_info("%s: power off button\n", DRIVER_NAME);
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#if 0
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/* REVISIT: this might need its own workqueue
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* plus tweaks including deadlock avoidance ...
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* also needs to get error handling and probably
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* an #ifdef CONFIG_HIBERNATION
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*/
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hibernate();
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#endif
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poll = 1;
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}
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}
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/* chgstatus irqs */
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if (tps->nmask1) {
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tmp = i2c_smbus_read_byte_data(tps->client, TPS_CHGSTATUS);
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mask = tmp ^ tps->chgstatus;
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tps->chgstatus = tmp;
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mask &= tps->nmask1;
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} else
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mask = 0;
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if (mask) {
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unsigned charging = 0;
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show_chgstatus("chg/irq", tmp);
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if (tmp & (TPS_CHG_USB|TPS_CHG_AC))
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show_chgconfig(tps->por, "conf", tps->chgconf);
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/* Unless it was turned off or disabled, we charge any
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* battery whenever there's power available for it
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* and the charger hasn't been disabled.
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*/
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if (!(tps->chgstatus & ~(TPS_CHG_USB|TPS_CHG_AC))
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&& (tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC))
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&& (tps->chgconf & TPS_CHARGE_ENABLE)
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) {
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if (tps->chgstatus & TPS_CHG_USB) {
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/* VBUS options are readonly until reconnect */
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if (mask & TPS_CHG_USB)
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set_bit(FLAG_VBUS_CHANGED, &tps->flags);
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charging = 1;
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} else if (tps->chgstatus & TPS_CHG_AC)
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charging = 1;
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}
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if (charging != tps->charging) {
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tps->charging = charging;
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pr_info("%s: battery %scharging\n",
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DRIVER_NAME, charging ? "" :
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((tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC))
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? "NOT " : "dis"));
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}
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}
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/* always poll to detect (a) power removal, without tps65013
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* NO_CHG IRQ; or (b) restart of charging after stop.
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*/
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if ((tps->model != TPS65013 || !tps->charging)
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&& (tps->chgstatus & (TPS_CHG_USB|TPS_CHG_AC)))
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poll = 1;
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if (poll)
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queue_delayed_work(system_power_efficient_wq, &tps->work,
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POWER_POLL_DELAY);
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/* also potentially gpio-in rise or fall */
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}
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/* handle IRQs and polling using keventd for now */
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static void tps65010_work(struct work_struct *work)
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{
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struct tps65010 *tps;
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tps = container_of(to_delayed_work(work), struct tps65010, work);
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mutex_lock(&tps->lock);
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tps65010_interrupt(tps);
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if (test_and_clear_bit(FLAG_VBUS_CHANGED, &tps->flags)) {
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int status;
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u8 chgconfig, tmp;
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chgconfig = i2c_smbus_read_byte_data(tps->client,
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TPS_CHGCONFIG);
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chgconfig &= ~(TPS_VBUS_500MA | TPS_VBUS_CHARGING);
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if (tps->vbus == 500)
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chgconfig |= TPS_VBUS_500MA | TPS_VBUS_CHARGING;
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else if (tps->vbus >= 100)
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chgconfig |= TPS_VBUS_CHARGING;
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status = i2c_smbus_write_byte_data(tps->client,
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TPS_CHGCONFIG, chgconfig);
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/* vbus update fails unless VBUS is connected! */
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tmp = i2c_smbus_read_byte_data(tps->client, TPS_CHGCONFIG);
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tps->chgconf = tmp;
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show_chgconfig(tps->por, "update vbus", tmp);
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}
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if (test_and_clear_bit(FLAG_IRQ_ENABLE, &tps->flags))
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enable_irq(tps->client->irq);
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mutex_unlock(&tps->lock);
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}
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static irqreturn_t tps65010_irq(int irq, void *_tps)
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{
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struct tps65010 *tps = _tps;
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disable_irq_nosync(irq);
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set_bit(FLAG_IRQ_ENABLE, &tps->flags);
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queue_delayed_work(system_power_efficient_wq, &tps->work, 0);
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return IRQ_HANDLED;
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}
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/*-------------------------------------------------------------------------*/
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/* offsets 0..3 == GPIO1..GPIO4
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* offsets 4..5 == LED1/nPG, LED2 (we set one of the non-BLINK modes)
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* offset 6 == vibrator motor driver
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*/
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static void
|
|
tps65010_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
|
|
{
|
|
if (offset < 4)
|
|
tps65010_set_gpio_out_value(offset + 1, value);
|
|
else if (offset < 6)
|
|
tps65010_set_led(offset - 3, value ? ON : OFF);
|
|
else
|
|
tps65010_set_vib(value);
|
|
}
|
|
|
|
static int
|
|
tps65010_output(struct gpio_chip *chip, unsigned offset, int value)
|
|
{
|
|
/* GPIOs may be input-only */
|
|
if (offset < 4) {
|
|
struct tps65010 *tps;
|
|
|
|
tps = container_of(chip, struct tps65010, chip);
|
|
if (!(tps->outmask & (1 << offset)))
|
|
return -EINVAL;
|
|
tps65010_set_gpio_out_value(offset + 1, value);
|
|
} else if (offset < 6)
|
|
tps65010_set_led(offset - 3, value ? ON : OFF);
|
|
else
|
|
tps65010_set_vib(value);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tps65010_gpio_get(struct gpio_chip *chip, unsigned offset)
|
|
{
|
|
int value;
|
|
struct tps65010 *tps;
|
|
|
|
tps = container_of(chip, struct tps65010, chip);
|
|
|
|
if (offset < 4) {
|
|
value = i2c_smbus_read_byte_data(tps->client, TPS_DEFGPIO);
|
|
if (value < 0)
|
|
return 0;
|
|
if (value & (1 << (offset + 4))) /* output */
|
|
return !(value & (1 << offset));
|
|
else /* input */
|
|
return (value & (1 << offset));
|
|
}
|
|
|
|
/* REVISIT we *could* report LED1/nPG and LED2 state ... */
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
static struct tps65010 *the_tps;
|
|
|
|
static int tps65010_remove(struct i2c_client *client)
|
|
{
|
|
struct tps65010 *tps = i2c_get_clientdata(client);
|
|
struct tps65010_board *board = dev_get_platdata(&client->dev);
|
|
|
|
if (board && board->teardown) {
|
|
int status = board->teardown(client, board->context);
|
|
if (status < 0)
|
|
dev_dbg(&client->dev, "board %s %s err %d\n",
|
|
"teardown", client->name, status);
|
|
}
|
|
if (client->irq > 0)
|
|
free_irq(client->irq, tps);
|
|
cancel_delayed_work_sync(&tps->work);
|
|
debugfs_remove(tps->file);
|
|
the_tps = NULL;
|
|
return 0;
|
|
}
|
|
|
|
static int tps65010_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct tps65010 *tps;
|
|
int status;
|
|
struct tps65010_board *board = dev_get_platdata(&client->dev);
|
|
|
|
if (the_tps) {
|
|
dev_dbg(&client->dev, "only one tps6501x chip allowed\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
|
|
return -EINVAL;
|
|
|
|
tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
|
|
if (!tps)
|
|
return -ENOMEM;
|
|
|
|
mutex_init(&tps->lock);
|
|
INIT_DELAYED_WORK(&tps->work, tps65010_work);
|
|
tps->client = client;
|
|
tps->model = id->driver_data;
|
|
|
|
/* the IRQ is active low, but many gpio lines can't support that
|
|
* so this driver uses falling-edge triggers instead.
|
|
*/
|
|
if (client->irq > 0) {
|
|
status = request_irq(client->irq, tps65010_irq,
|
|
IRQF_TRIGGER_FALLING, DRIVER_NAME, tps);
|
|
if (status < 0) {
|
|
dev_dbg(&client->dev, "can't get IRQ %d, err %d\n",
|
|
client->irq, status);
|
|
return status;
|
|
}
|
|
/* annoying race here, ideally we'd have an option
|
|
* to claim the irq now and enable it later.
|
|
* FIXME genirq IRQF_NOAUTOEN now solves that ...
|
|
*/
|
|
disable_irq(client->irq);
|
|
set_bit(FLAG_IRQ_ENABLE, &tps->flags);
|
|
} else
|
|
dev_warn(&client->dev, "IRQ not configured!\n");
|
|
|
|
|
|
switch (tps->model) {
|
|
case TPS65010:
|
|
case TPS65012:
|
|
tps->por = 1;
|
|
break;
|
|
/* else CHGCONFIG.POR is replaced by AUA, enabling a WAIT mode */
|
|
}
|
|
tps->chgconf = i2c_smbus_read_byte_data(client, TPS_CHGCONFIG);
|
|
show_chgconfig(tps->por, "conf/init", tps->chgconf);
|
|
|
|
show_chgstatus("chg/init",
|
|
i2c_smbus_read_byte_data(client, TPS_CHGSTATUS));
|
|
show_regstatus("reg/init",
|
|
i2c_smbus_read_byte_data(client, TPS_REGSTATUS));
|
|
|
|
pr_debug("%s: vdcdc1 0x%02x, vdcdc2 %02x, vregs1 %02x\n", DRIVER_NAME,
|
|
i2c_smbus_read_byte_data(client, TPS_VDCDC1),
|
|
i2c_smbus_read_byte_data(client, TPS_VDCDC2),
|
|
i2c_smbus_read_byte_data(client, TPS_VREGS1));
|
|
pr_debug("%s: defgpio 0x%02x, mask3 0x%02x\n", DRIVER_NAME,
|
|
i2c_smbus_read_byte_data(client, TPS_DEFGPIO),
|
|
i2c_smbus_read_byte_data(client, TPS_MASK3));
|
|
|
|
i2c_set_clientdata(client, tps);
|
|
the_tps = tps;
|
|
|
|
#if defined(CONFIG_USB_GADGET) && !defined(CONFIG_USB_OTG)
|
|
/* USB hosts can't draw VBUS. OTG devices could, later
|
|
* when OTG infrastructure enables it. USB peripherals
|
|
* could be relying on VBUS while booting, though.
|
|
*/
|
|
tps->vbus = 100;
|
|
#endif
|
|
|
|
/* unmask the "interesting" irqs, then poll once to
|
|
* kickstart monitoring, initialize shadowed status
|
|
* registers, and maybe disable VBUS draw.
|
|
*/
|
|
tps->nmask1 = ~0;
|
|
(void) i2c_smbus_write_byte_data(client, TPS_MASK1, ~tps->nmask1);
|
|
|
|
tps->nmask2 = TPS_REG_ONOFF;
|
|
if (tps->model == TPS65013)
|
|
tps->nmask2 |= TPS_REG_NO_CHG;
|
|
(void) i2c_smbus_write_byte_data(client, TPS_MASK2, ~tps->nmask2);
|
|
|
|
(void) i2c_smbus_write_byte_data(client, TPS_MASK3, 0x0f
|
|
| i2c_smbus_read_byte_data(client, TPS_MASK3));
|
|
|
|
tps65010_work(&tps->work.work);
|
|
|
|
tps->file = debugfs_create_file(DRIVER_NAME, S_IRUGO, NULL,
|
|
tps, DEBUG_FOPS);
|
|
|
|
/* optionally register GPIOs */
|
|
if (board && board->base != 0) {
|
|
tps->outmask = board->outmask;
|
|
|
|
tps->chip.label = client->name;
|
|
tps->chip.dev = &client->dev;
|
|
tps->chip.owner = THIS_MODULE;
|
|
|
|
tps->chip.set = tps65010_gpio_set;
|
|
tps->chip.direction_output = tps65010_output;
|
|
|
|
/* NOTE: only partial support for inputs; nyet IRQs */
|
|
tps->chip.get = tps65010_gpio_get;
|
|
|
|
tps->chip.base = board->base;
|
|
tps->chip.ngpio = 7;
|
|
tps->chip.can_sleep = 1;
|
|
|
|
status = gpiochip_add(&tps->chip);
|
|
if (status < 0)
|
|
dev_err(&client->dev, "can't add gpiochip, err %d\n",
|
|
status);
|
|
else if (board->setup) {
|
|
status = board->setup(client, board->context);
|
|
if (status < 0) {
|
|
dev_dbg(&client->dev,
|
|
"board %s %s err %d\n",
|
|
"setup", client->name, status);
|
|
status = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id tps65010_id[] = {
|
|
{ "tps65010", TPS65010 },
|
|
{ "tps65011", TPS65011 },
|
|
{ "tps65012", TPS65012 },
|
|
{ "tps65013", TPS65013 },
|
|
{ "tps65014", TPS65011 }, /* tps65011 charging at 6.5V max */
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, tps65010_id);
|
|
|
|
static struct i2c_driver tps65010_driver = {
|
|
.driver = {
|
|
.name = "tps65010",
|
|
},
|
|
.probe = tps65010_probe,
|
|
.remove = tps65010_remove,
|
|
.id_table = tps65010_id,
|
|
};
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
/* Draw from VBUS:
|
|
* 0 mA -- DON'T DRAW (might supply power instead)
|
|
* 100 mA -- usb unit load (slowest charge rate)
|
|
* 500 mA -- usb high power (fast battery charge)
|
|
*/
|
|
int tps65010_set_vbus_draw(unsigned mA)
|
|
{
|
|
unsigned long flags;
|
|
|
|
if (!the_tps)
|
|
return -ENODEV;
|
|
|
|
/* assumes non-SMP */
|
|
local_irq_save(flags);
|
|
if (mA >= 500)
|
|
mA = 500;
|
|
else if (mA >= 100)
|
|
mA = 100;
|
|
else
|
|
mA = 0;
|
|
the_tps->vbus = mA;
|
|
if ((the_tps->chgstatus & TPS_CHG_USB)
|
|
&& test_and_set_bit(
|
|
FLAG_VBUS_CHANGED, &the_tps->flags)) {
|
|
/* gadget drivers call this in_irq() */
|
|
queue_delayed_work(system_power_efficient_wq, &the_tps->work,
|
|
0);
|
|
}
|
|
local_irq_restore(flags);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(tps65010_set_vbus_draw);
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
/* tps65010_set_gpio_out_value parameter:
|
|
* gpio: GPIO1, GPIO2, GPIO3 or GPIO4
|
|
* value: LOW or HIGH
|
|
*/
|
|
int tps65010_set_gpio_out_value(unsigned gpio, unsigned value)
|
|
{
|
|
int status;
|
|
unsigned defgpio;
|
|
|
|
if (!the_tps)
|
|
return -ENODEV;
|
|
if ((gpio < GPIO1) || (gpio > GPIO4))
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&the_tps->lock);
|
|
|
|
defgpio = i2c_smbus_read_byte_data(the_tps->client, TPS_DEFGPIO);
|
|
|
|
/* Configure GPIO for output */
|
|
defgpio |= 1 << (gpio + 3);
|
|
|
|
/* Writing 1 forces a logic 0 on that GPIO and vice versa */
|
|
switch (value) {
|
|
case LOW:
|
|
defgpio |= 1 << (gpio - 1); /* set GPIO low by writing 1 */
|
|
break;
|
|
/* case HIGH: */
|
|
default:
|
|
defgpio &= ~(1 << (gpio - 1)); /* set GPIO high by writing 0 */
|
|
break;
|
|
}
|
|
|
|
status = i2c_smbus_write_byte_data(the_tps->client,
|
|
TPS_DEFGPIO, defgpio);
|
|
|
|
pr_debug("%s: gpio%dout = %s, defgpio 0x%02x\n", DRIVER_NAME,
|
|
gpio, value ? "high" : "low",
|
|
i2c_smbus_read_byte_data(the_tps->client, TPS_DEFGPIO));
|
|
|
|
mutex_unlock(&the_tps->lock);
|
|
return status;
|
|
}
|
|
EXPORT_SYMBOL(tps65010_set_gpio_out_value);
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
/* tps65010_set_led parameter:
|
|
* led: LED1 or LED2
|
|
* mode: ON, OFF or BLINK
|
|
*/
|
|
int tps65010_set_led(unsigned led, unsigned mode)
|
|
{
|
|
int status;
|
|
unsigned led_on, led_per, offs;
|
|
|
|
if (!the_tps)
|
|
return -ENODEV;
|
|
|
|
if (led == LED1)
|
|
offs = 0;
|
|
else {
|
|
offs = 2;
|
|
led = LED2;
|
|
}
|
|
|
|
mutex_lock(&the_tps->lock);
|
|
|
|
pr_debug("%s: led%i_on 0x%02x\n", DRIVER_NAME, led,
|
|
i2c_smbus_read_byte_data(the_tps->client,
|
|
TPS_LED1_ON + offs));
|
|
|
|
pr_debug("%s: led%i_per 0x%02x\n", DRIVER_NAME, led,
|
|
i2c_smbus_read_byte_data(the_tps->client,
|
|
TPS_LED1_PER + offs));
|
|
|
|
switch (mode) {
|
|
case OFF:
|
|
led_on = 1 << 7;
|
|
led_per = 0 << 7;
|
|
break;
|
|
case ON:
|
|
led_on = 1 << 7;
|
|
led_per = 1 << 7;
|
|
break;
|
|
case BLINK:
|
|
led_on = 0x30 | (0 << 7);
|
|
led_per = 0x08 | (1 << 7);
|
|
break;
|
|
default:
|
|
printk(KERN_ERR "%s: Wrong mode parameter for set_led()\n",
|
|
DRIVER_NAME);
|
|
mutex_unlock(&the_tps->lock);
|
|
return -EINVAL;
|
|
}
|
|
|
|
status = i2c_smbus_write_byte_data(the_tps->client,
|
|
TPS_LED1_ON + offs, led_on);
|
|
|
|
if (status != 0) {
|
|
printk(KERN_ERR "%s: Failed to write led%i_on register\n",
|
|
DRIVER_NAME, led);
|
|
mutex_unlock(&the_tps->lock);
|
|
return status;
|
|
}
|
|
|
|
pr_debug("%s: led%i_on 0x%02x\n", DRIVER_NAME, led,
|
|
i2c_smbus_read_byte_data(the_tps->client, TPS_LED1_ON + offs));
|
|
|
|
status = i2c_smbus_write_byte_data(the_tps->client,
|
|
TPS_LED1_PER + offs, led_per);
|
|
|
|
if (status != 0) {
|
|
printk(KERN_ERR "%s: Failed to write led%i_per register\n",
|
|
DRIVER_NAME, led);
|
|
mutex_unlock(&the_tps->lock);
|
|
return status;
|
|
}
|
|
|
|
pr_debug("%s: led%i_per 0x%02x\n", DRIVER_NAME, led,
|
|
i2c_smbus_read_byte_data(the_tps->client,
|
|
TPS_LED1_PER + offs));
|
|
|
|
mutex_unlock(&the_tps->lock);
|
|
|
|
return status;
|
|
}
|
|
EXPORT_SYMBOL(tps65010_set_led);
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
/* tps65010_set_vib parameter:
|
|
* value: ON or OFF
|
|
*/
|
|
int tps65010_set_vib(unsigned value)
|
|
{
|
|
int status;
|
|
unsigned vdcdc2;
|
|
|
|
if (!the_tps)
|
|
return -ENODEV;
|
|
|
|
mutex_lock(&the_tps->lock);
|
|
|
|
vdcdc2 = i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC2);
|
|
vdcdc2 &= ~(1 << 1);
|
|
if (value)
|
|
vdcdc2 |= (1 << 1);
|
|
status = i2c_smbus_write_byte_data(the_tps->client,
|
|
TPS_VDCDC2, vdcdc2);
|
|
|
|
pr_debug("%s: vibrator %s\n", DRIVER_NAME, value ? "on" : "off");
|
|
|
|
mutex_unlock(&the_tps->lock);
|
|
return status;
|
|
}
|
|
EXPORT_SYMBOL(tps65010_set_vib);
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
/* tps65010_set_low_pwr parameter:
|
|
* mode: ON or OFF
|
|
*/
|
|
int tps65010_set_low_pwr(unsigned mode)
|
|
{
|
|
int status;
|
|
unsigned vdcdc1;
|
|
|
|
if (!the_tps)
|
|
return -ENODEV;
|
|
|
|
mutex_lock(&the_tps->lock);
|
|
|
|
pr_debug("%s: %s low_pwr, vdcdc1 0x%02x\n", DRIVER_NAME,
|
|
mode ? "enable" : "disable",
|
|
i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1));
|
|
|
|
vdcdc1 = i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1);
|
|
|
|
switch (mode) {
|
|
case OFF:
|
|
vdcdc1 &= ~TPS_ENABLE_LP; /* disable ENABLE_LP bit */
|
|
break;
|
|
/* case ON: */
|
|
default:
|
|
vdcdc1 |= TPS_ENABLE_LP; /* enable ENABLE_LP bit */
|
|
break;
|
|
}
|
|
|
|
status = i2c_smbus_write_byte_data(the_tps->client,
|
|
TPS_VDCDC1, vdcdc1);
|
|
|
|
if (status != 0)
|
|
printk(KERN_ERR "%s: Failed to write vdcdc1 register\n",
|
|
DRIVER_NAME);
|
|
else
|
|
pr_debug("%s: vdcdc1 0x%02x\n", DRIVER_NAME,
|
|
i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1));
|
|
|
|
mutex_unlock(&the_tps->lock);
|
|
|
|
return status;
|
|
}
|
|
EXPORT_SYMBOL(tps65010_set_low_pwr);
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
/* tps65010_config_vregs1 parameter:
|
|
* value to be written to VREGS1 register
|
|
* Note: The complete register is written, set all bits you need
|
|
*/
|
|
int tps65010_config_vregs1(unsigned value)
|
|
{
|
|
int status;
|
|
|
|
if (!the_tps)
|
|
return -ENODEV;
|
|
|
|
mutex_lock(&the_tps->lock);
|
|
|
|
pr_debug("%s: vregs1 0x%02x\n", DRIVER_NAME,
|
|
i2c_smbus_read_byte_data(the_tps->client, TPS_VREGS1));
|
|
|
|
status = i2c_smbus_write_byte_data(the_tps->client,
|
|
TPS_VREGS1, value);
|
|
|
|
if (status != 0)
|
|
printk(KERN_ERR "%s: Failed to write vregs1 register\n",
|
|
DRIVER_NAME);
|
|
else
|
|
pr_debug("%s: vregs1 0x%02x\n", DRIVER_NAME,
|
|
i2c_smbus_read_byte_data(the_tps->client, TPS_VREGS1));
|
|
|
|
mutex_unlock(&the_tps->lock);
|
|
|
|
return status;
|
|
}
|
|
EXPORT_SYMBOL(tps65010_config_vregs1);
|
|
|
|
int tps65010_config_vdcdc2(unsigned value)
|
|
{
|
|
struct i2c_client *c;
|
|
int status;
|
|
|
|
if (!the_tps)
|
|
return -ENODEV;
|
|
|
|
c = the_tps->client;
|
|
mutex_lock(&the_tps->lock);
|
|
|
|
pr_debug("%s: vdcdc2 0x%02x\n", DRIVER_NAME,
|
|
i2c_smbus_read_byte_data(c, TPS_VDCDC2));
|
|
|
|
status = i2c_smbus_write_byte_data(c, TPS_VDCDC2, value);
|
|
|
|
if (status != 0)
|
|
printk(KERN_ERR "%s: Failed to write vdcdc2 register\n",
|
|
DRIVER_NAME);
|
|
else
|
|
pr_debug("%s: vregs1 0x%02x\n", DRIVER_NAME,
|
|
i2c_smbus_read_byte_data(c, TPS_VDCDC2));
|
|
|
|
mutex_unlock(&the_tps->lock);
|
|
return status;
|
|
}
|
|
EXPORT_SYMBOL(tps65010_config_vdcdc2);
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
/* tps65013_set_low_pwr parameter:
|
|
* mode: ON or OFF
|
|
*/
|
|
|
|
/* FIXME: Assumes AC or USB power is present. Setting AUA bit is not
|
|
required if power supply is through a battery */
|
|
|
|
int tps65013_set_low_pwr(unsigned mode)
|
|
{
|
|
int status;
|
|
unsigned vdcdc1, chgconfig;
|
|
|
|
if (!the_tps || the_tps->por)
|
|
return -ENODEV;
|
|
|
|
mutex_lock(&the_tps->lock);
|
|
|
|
pr_debug("%s: %s low_pwr, chgconfig 0x%02x vdcdc1 0x%02x\n",
|
|
DRIVER_NAME,
|
|
mode ? "enable" : "disable",
|
|
i2c_smbus_read_byte_data(the_tps->client, TPS_CHGCONFIG),
|
|
i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1));
|
|
|
|
chgconfig = i2c_smbus_read_byte_data(the_tps->client, TPS_CHGCONFIG);
|
|
vdcdc1 = i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1);
|
|
|
|
switch (mode) {
|
|
case OFF:
|
|
chgconfig &= ~TPS65013_AUA; /* disable AUA bit */
|
|
vdcdc1 &= ~TPS_ENABLE_LP; /* disable ENABLE_LP bit */
|
|
break;
|
|
/* case ON: */
|
|
default:
|
|
chgconfig |= TPS65013_AUA; /* enable AUA bit */
|
|
vdcdc1 |= TPS_ENABLE_LP; /* enable ENABLE_LP bit */
|
|
break;
|
|
}
|
|
|
|
status = i2c_smbus_write_byte_data(the_tps->client,
|
|
TPS_CHGCONFIG, chgconfig);
|
|
if (status != 0) {
|
|
printk(KERN_ERR "%s: Failed to write chconfig register\n",
|
|
DRIVER_NAME);
|
|
mutex_unlock(&the_tps->lock);
|
|
return status;
|
|
}
|
|
|
|
chgconfig = i2c_smbus_read_byte_data(the_tps->client, TPS_CHGCONFIG);
|
|
the_tps->chgconf = chgconfig;
|
|
show_chgconfig(0, "chgconf", chgconfig);
|
|
|
|
status = i2c_smbus_write_byte_data(the_tps->client,
|
|
TPS_VDCDC1, vdcdc1);
|
|
|
|
if (status != 0)
|
|
printk(KERN_ERR "%s: Failed to write vdcdc1 register\n",
|
|
DRIVER_NAME);
|
|
else
|
|
pr_debug("%s: vdcdc1 0x%02x\n", DRIVER_NAME,
|
|
i2c_smbus_read_byte_data(the_tps->client, TPS_VDCDC1));
|
|
|
|
mutex_unlock(&the_tps->lock);
|
|
|
|
return status;
|
|
}
|
|
EXPORT_SYMBOL(tps65013_set_low_pwr);
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
static int __init tps_init(void)
|
|
{
|
|
u32 tries = 3;
|
|
int status = -ENODEV;
|
|
|
|
printk(KERN_INFO "%s: version %s\n", DRIVER_NAME, DRIVER_VERSION);
|
|
|
|
/* some boards have startup glitches */
|
|
while (tries--) {
|
|
status = i2c_add_driver(&tps65010_driver);
|
|
if (the_tps)
|
|
break;
|
|
i2c_del_driver(&tps65010_driver);
|
|
if (!tries) {
|
|
printk(KERN_ERR "%s: no chip?\n", DRIVER_NAME);
|
|
return -ENODEV;
|
|
}
|
|
pr_debug("%s: re-probe ...\n", DRIVER_NAME);
|
|
msleep(10);
|
|
}
|
|
|
|
return status;
|
|
}
|
|
/* NOTE: this MUST be initialized before the other parts of the system
|
|
* that rely on it ... but after the i2c bus on which this relies.
|
|
* That is, much earlier than on PC-type systems, which don't often use
|
|
* I2C as a core system bus.
|
|
*/
|
|
subsys_initcall(tps_init);
|
|
|
|
static void __exit tps_exit(void)
|
|
{
|
|
i2c_del_driver(&tps65010_driver);
|
|
}
|
|
module_exit(tps_exit);
|
|
|