10376148fSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only 28c0984e5SSebastian Reichel /* 38c0984e5SSebastian Reichel * Copyright (C) ST-Ericsson SA 2012 48c0984e5SSebastian Reichel * 58c0984e5SSebastian Reichel * Battery temperature driver for AB8500 68c0984e5SSebastian Reichel * 78c0984e5SSebastian Reichel * Author: 88c0984e5SSebastian Reichel * Johan Palsson <johan.palsson@stericsson.com> 98c0984e5SSebastian Reichel * Karl Komierowski <karl.komierowski@stericsson.com> 108c0984e5SSebastian Reichel * Arun R Murthy <arun.murthy@stericsson.com> 118c0984e5SSebastian Reichel */ 128c0984e5SSebastian Reichel 138c0984e5SSebastian Reichel #include <linux/init.h> 148c0984e5SSebastian Reichel #include <linux/module.h> 158c0984e5SSebastian Reichel #include <linux/device.h> 161c1f13a0SLinus Walleij #include <linux/component.h> 178c0984e5SSebastian Reichel #include <linux/interrupt.h> 188c0984e5SSebastian Reichel #include <linux/delay.h> 198c0984e5SSebastian Reichel #include <linux/slab.h> 208c0984e5SSebastian Reichel #include <linux/platform_device.h> 218c0984e5SSebastian Reichel #include <linux/power_supply.h> 228c0984e5SSebastian Reichel #include <linux/completion.h> 238c0984e5SSebastian Reichel #include <linux/workqueue.h> 248c0984e5SSebastian Reichel #include <linux/jiffies.h> 258c0984e5SSebastian Reichel #include <linux/of.h> 268c0984e5SSebastian Reichel #include <linux/mfd/core.h> 278c0984e5SSebastian Reichel #include <linux/mfd/abx500.h> 288c0984e5SSebastian Reichel #include <linux/mfd/abx500/ab8500.h> 290a8686e3SLinus Walleij #include <linux/iio/consumer.h> 308c0984e5SSebastian Reichel 31417c0fc2SLinus Walleij #include "ab8500-bm.h" 32417c0fc2SLinus Walleij 338c0984e5SSebastian Reichel #define VTVOUT_V 1800 348c0984e5SSebastian Reichel 358c0984e5SSebastian Reichel #define BTEMP_THERMAL_LOW_LIMIT -10 368c0984e5SSebastian Reichel #define BTEMP_THERMAL_MED_LIMIT 0 378c0984e5SSebastian Reichel #define BTEMP_THERMAL_HIGH_LIMIT_52 52 388c0984e5SSebastian Reichel #define BTEMP_THERMAL_HIGH_LIMIT_57 57 398c0984e5SSebastian Reichel #define BTEMP_THERMAL_HIGH_LIMIT_62 62 408c0984e5SSebastian Reichel 418c0984e5SSebastian Reichel #define BTEMP_BATCTRL_CURR_SRC_7UA 7 428c0984e5SSebastian Reichel #define BTEMP_BATCTRL_CURR_SRC_20UA 20 438c0984e5SSebastian Reichel 448c0984e5SSebastian Reichel #define BTEMP_BATCTRL_CURR_SRC_16UA 16 458c0984e5SSebastian Reichel #define BTEMP_BATCTRL_CURR_SRC_18UA 18 468c0984e5SSebastian Reichel 478c0984e5SSebastian Reichel #define BTEMP_BATCTRL_CURR_SRC_60UA 60 488c0984e5SSebastian Reichel #define BTEMP_BATCTRL_CURR_SRC_120UA 120 498c0984e5SSebastian Reichel 508c0984e5SSebastian Reichel /** 518c0984e5SSebastian Reichel * struct ab8500_btemp_interrupts - ab8500 interrupts 528c0984e5SSebastian Reichel * @name: name of the interrupt 538c0984e5SSebastian Reichel * @isr function pointer to the isr 548c0984e5SSebastian Reichel */ 558c0984e5SSebastian Reichel struct ab8500_btemp_interrupts { 568c0984e5SSebastian Reichel char *name; 578c0984e5SSebastian Reichel irqreturn_t (*isr)(int irq, void *data); 588c0984e5SSebastian Reichel }; 598c0984e5SSebastian Reichel 608c0984e5SSebastian Reichel struct ab8500_btemp_events { 618c0984e5SSebastian Reichel bool batt_rem; 628c0984e5SSebastian Reichel bool btemp_high; 638c0984e5SSebastian Reichel bool btemp_medhigh; 648c0984e5SSebastian Reichel bool btemp_lowmed; 658c0984e5SSebastian Reichel bool btemp_low; 668c0984e5SSebastian Reichel bool ac_conn; 678c0984e5SSebastian Reichel bool usb_conn; 688c0984e5SSebastian Reichel }; 698c0984e5SSebastian Reichel 708c0984e5SSebastian Reichel struct ab8500_btemp_ranges { 718c0984e5SSebastian Reichel int btemp_high_limit; 728c0984e5SSebastian Reichel int btemp_med_limit; 738c0984e5SSebastian Reichel int btemp_low_limit; 748c0984e5SSebastian Reichel }; 758c0984e5SSebastian Reichel 768c0984e5SSebastian Reichel /** 778c0984e5SSebastian Reichel * struct ab8500_btemp - ab8500 BTEMP device information 788c0984e5SSebastian Reichel * @dev: Pointer to the structure device 798c0984e5SSebastian Reichel * @node: List of AB8500 BTEMPs, hence prepared for reentrance 808c0984e5SSebastian Reichel * @curr_source: What current source we use, in uA 81c56ca24aSColin Ian King * @bat_temp: Dispatched battery temperature in degree Celsius 82c56ca24aSColin Ian King * @prev_bat_temp Last measured battery temperature in degree Celsius 838c0984e5SSebastian Reichel * @parent: Pointer to the struct ab8500 840a8686e3SLinus Walleij * @adc_btemp_ball: ADC channel for the battery ball temperature 850a8686e3SLinus Walleij * @adc_bat_ctrl: ADC channel for the battery control 868c0984e5SSebastian Reichel * @fg: Pointer to the struct fg 878c0984e5SSebastian Reichel * @bm: Platform specific battery management information 888c0984e5SSebastian Reichel * @btemp_psy: Structure for BTEMP specific battery properties 898c0984e5SSebastian Reichel * @events: Structure for information about events triggered 908c0984e5SSebastian Reichel * @btemp_ranges: Battery temperature range structure 918c0984e5SSebastian Reichel * @btemp_wq: Work queue for measuring the temperature periodically 928c0984e5SSebastian Reichel * @btemp_periodic_work: Work for measuring the temperature periodically 938c0984e5SSebastian Reichel * @initialized: True if battery id read. 948c0984e5SSebastian Reichel */ 958c0984e5SSebastian Reichel struct ab8500_btemp { 968c0984e5SSebastian Reichel struct device *dev; 978c0984e5SSebastian Reichel struct list_head node; 988c0984e5SSebastian Reichel int curr_source; 998c0984e5SSebastian Reichel int bat_temp; 1008c0984e5SSebastian Reichel int prev_bat_temp; 1018c0984e5SSebastian Reichel struct ab8500 *parent; 1020a8686e3SLinus Walleij struct iio_channel *btemp_ball; 1030a8686e3SLinus Walleij struct iio_channel *bat_ctrl; 1048c0984e5SSebastian Reichel struct ab8500_fg *fg; 1058c0984e5SSebastian Reichel struct abx500_bm_data *bm; 1068c0984e5SSebastian Reichel struct power_supply *btemp_psy; 1078c0984e5SSebastian Reichel struct ab8500_btemp_events events; 1088c0984e5SSebastian Reichel struct ab8500_btemp_ranges btemp_ranges; 1098c0984e5SSebastian Reichel struct workqueue_struct *btemp_wq; 1108c0984e5SSebastian Reichel struct delayed_work btemp_periodic_work; 1118c0984e5SSebastian Reichel bool initialized; 1128c0984e5SSebastian Reichel }; 1138c0984e5SSebastian Reichel 1148c0984e5SSebastian Reichel /* BTEMP power supply properties */ 1158c0984e5SSebastian Reichel static enum power_supply_property ab8500_btemp_props[] = { 1168c0984e5SSebastian Reichel POWER_SUPPLY_PROP_PRESENT, 1178c0984e5SSebastian Reichel POWER_SUPPLY_PROP_ONLINE, 1188c0984e5SSebastian Reichel POWER_SUPPLY_PROP_TECHNOLOGY, 1198c0984e5SSebastian Reichel POWER_SUPPLY_PROP_TEMP, 1208c0984e5SSebastian Reichel }; 1218c0984e5SSebastian Reichel 1228c0984e5SSebastian Reichel static LIST_HEAD(ab8500_btemp_list); 1238c0984e5SSebastian Reichel 1248c0984e5SSebastian Reichel /** 1258c0984e5SSebastian Reichel * ab8500_btemp_batctrl_volt_to_res() - convert batctrl voltage to resistance 1268c0984e5SSebastian Reichel * @di: pointer to the ab8500_btemp structure 1278c0984e5SSebastian Reichel * @v_batctrl: measured batctrl voltage 1288c0984e5SSebastian Reichel * @inst_curr: measured instant current 1298c0984e5SSebastian Reichel * 1308c0984e5SSebastian Reichel * This function returns the battery resistance that is 1318c0984e5SSebastian Reichel * derived from the BATCTRL voltage. 1328c0984e5SSebastian Reichel * Returns value in Ohms. 1338c0984e5SSebastian Reichel */ 1348c0984e5SSebastian Reichel static int ab8500_btemp_batctrl_volt_to_res(struct ab8500_btemp *di, 1358c0984e5SSebastian Reichel int v_batctrl, int inst_curr) 1368c0984e5SSebastian Reichel { 1378c0984e5SSebastian Reichel int rbs; 1388c0984e5SSebastian Reichel 1398c0984e5SSebastian Reichel if (is_ab8500_1p1_or_earlier(di->parent)) { 1408c0984e5SSebastian Reichel /* 1418c0984e5SSebastian Reichel * For ABB cut1.0 and 1.1 BAT_CTRL is internally 1428c0984e5SSebastian Reichel * connected to 1.8V through a 450k resistor 1438c0984e5SSebastian Reichel */ 1448c0984e5SSebastian Reichel return (450000 * (v_batctrl)) / (1800 - v_batctrl); 1458c0984e5SSebastian Reichel } 1468c0984e5SSebastian Reichel 1478c0984e5SSebastian Reichel if (di->bm->adc_therm == ABx500_ADC_THERM_BATCTRL) { 1488c0984e5SSebastian Reichel /* 1498c0984e5SSebastian Reichel * If the battery has internal NTC, we use the current 1508c0984e5SSebastian Reichel * source to calculate the resistance. 1518c0984e5SSebastian Reichel */ 1528c0984e5SSebastian Reichel rbs = (v_batctrl * 1000 1538c0984e5SSebastian Reichel - di->bm->gnd_lift_resistance * inst_curr) 1548c0984e5SSebastian Reichel / di->curr_source; 1558c0984e5SSebastian Reichel } else { 1568c0984e5SSebastian Reichel /* 1578c0984e5SSebastian Reichel * BAT_CTRL is internally 1588c0984e5SSebastian Reichel * connected to 1.8V through a 80k resistor 1598c0984e5SSebastian Reichel */ 1608c0984e5SSebastian Reichel rbs = (80000 * (v_batctrl)) / (1800 - v_batctrl); 1618c0984e5SSebastian Reichel } 1628c0984e5SSebastian Reichel 1638c0984e5SSebastian Reichel return rbs; 1648c0984e5SSebastian Reichel } 1658c0984e5SSebastian Reichel 1668c0984e5SSebastian Reichel /** 1678c0984e5SSebastian Reichel * ab8500_btemp_read_batctrl_voltage() - measure batctrl voltage 1688c0984e5SSebastian Reichel * @di: pointer to the ab8500_btemp structure 1698c0984e5SSebastian Reichel * 1708c0984e5SSebastian Reichel * This function returns the voltage on BATCTRL. Returns value in mV. 1718c0984e5SSebastian Reichel */ 1728c0984e5SSebastian Reichel static int ab8500_btemp_read_batctrl_voltage(struct ab8500_btemp *di) 1738c0984e5SSebastian Reichel { 1740a8686e3SLinus Walleij int vbtemp, ret; 1758c0984e5SSebastian Reichel static int prev; 1768c0984e5SSebastian Reichel 1770a8686e3SLinus Walleij ret = iio_read_channel_processed(di->bat_ctrl, &vbtemp); 1780a8686e3SLinus Walleij if (ret < 0) { 1798c0984e5SSebastian Reichel dev_err(di->dev, 1800a8686e3SLinus Walleij "%s ADC conversion failed, using previous value", 1818c0984e5SSebastian Reichel __func__); 1828c0984e5SSebastian Reichel return prev; 1838c0984e5SSebastian Reichel } 1848c0984e5SSebastian Reichel prev = vbtemp; 1858c0984e5SSebastian Reichel return vbtemp; 1868c0984e5SSebastian Reichel } 1878c0984e5SSebastian Reichel 1888c0984e5SSebastian Reichel /** 1898c0984e5SSebastian Reichel * ab8500_btemp_curr_source_enable() - enable/disable batctrl current source 1908c0984e5SSebastian Reichel * @di: pointer to the ab8500_btemp structure 1918c0984e5SSebastian Reichel * @enable: enable or disable the current source 1928c0984e5SSebastian Reichel * 1938c0984e5SSebastian Reichel * Enable or disable the current sources for the BatCtrl AD channel 1948c0984e5SSebastian Reichel */ 1958c0984e5SSebastian Reichel static int ab8500_btemp_curr_source_enable(struct ab8500_btemp *di, 1968c0984e5SSebastian Reichel bool enable) 1978c0984e5SSebastian Reichel { 1988c0984e5SSebastian Reichel int curr; 1998c0984e5SSebastian Reichel int ret = 0; 2008c0984e5SSebastian Reichel 2018c0984e5SSebastian Reichel /* 2028c0984e5SSebastian Reichel * BATCTRL current sources are included on AB8500 cut2.0 2038c0984e5SSebastian Reichel * and future versions 2048c0984e5SSebastian Reichel */ 2058c0984e5SSebastian Reichel if (is_ab8500_1p1_or_earlier(di->parent)) 2068c0984e5SSebastian Reichel return 0; 2078c0984e5SSebastian Reichel 2088c0984e5SSebastian Reichel /* Only do this for batteries with internal NTC */ 2098c0984e5SSebastian Reichel if (di->bm->adc_therm == ABx500_ADC_THERM_BATCTRL && enable) { 2108c0984e5SSebastian Reichel 2118c0984e5SSebastian Reichel if (di->curr_source == BTEMP_BATCTRL_CURR_SRC_7UA) 2128c0984e5SSebastian Reichel curr = BAT_CTRL_7U_ENA; 2138c0984e5SSebastian Reichel else 2148c0984e5SSebastian Reichel curr = BAT_CTRL_20U_ENA; 2158c0984e5SSebastian Reichel 2168c0984e5SSebastian Reichel dev_dbg(di->dev, "Set BATCTRL %duA\n", di->curr_source); 2178c0984e5SSebastian Reichel 2188c0984e5SSebastian Reichel ret = abx500_mask_and_set_register_interruptible(di->dev, 2198c0984e5SSebastian Reichel AB8500_CHARGER, AB8500_BAT_CTRL_CURRENT_SOURCE, 2208c0984e5SSebastian Reichel FORCE_BAT_CTRL_CMP_HIGH, FORCE_BAT_CTRL_CMP_HIGH); 2218c0984e5SSebastian Reichel if (ret) { 2228c0984e5SSebastian Reichel dev_err(di->dev, "%s failed setting cmp_force\n", 2238c0984e5SSebastian Reichel __func__); 2248c0984e5SSebastian Reichel return ret; 2258c0984e5SSebastian Reichel } 2268c0984e5SSebastian Reichel 2278c0984e5SSebastian Reichel /* 2288c0984e5SSebastian Reichel * We have to wait one 32kHz cycle before enabling 2298c0984e5SSebastian Reichel * the current source, since ForceBatCtrlCmpHigh needs 2308c0984e5SSebastian Reichel * to be written in a separate cycle 2318c0984e5SSebastian Reichel */ 2328c0984e5SSebastian Reichel udelay(32); 2338c0984e5SSebastian Reichel 2348c0984e5SSebastian Reichel ret = abx500_set_register_interruptible(di->dev, 2358c0984e5SSebastian Reichel AB8500_CHARGER, AB8500_BAT_CTRL_CURRENT_SOURCE, 2368c0984e5SSebastian Reichel FORCE_BAT_CTRL_CMP_HIGH | curr); 2378c0984e5SSebastian Reichel if (ret) { 2388c0984e5SSebastian Reichel dev_err(di->dev, "%s failed enabling current source\n", 2398c0984e5SSebastian Reichel __func__); 2408c0984e5SSebastian Reichel goto disable_curr_source; 2418c0984e5SSebastian Reichel } 2428c0984e5SSebastian Reichel } else if (di->bm->adc_therm == ABx500_ADC_THERM_BATCTRL && !enable) { 2438c0984e5SSebastian Reichel dev_dbg(di->dev, "Disable BATCTRL curr source\n"); 2448c0984e5SSebastian Reichel 2458c0984e5SSebastian Reichel /* Write 0 to the curr bits */ 2468c0984e5SSebastian Reichel ret = abx500_mask_and_set_register_interruptible( 2478c0984e5SSebastian Reichel di->dev, 2488c0984e5SSebastian Reichel AB8500_CHARGER, AB8500_BAT_CTRL_CURRENT_SOURCE, 2498c0984e5SSebastian Reichel BAT_CTRL_7U_ENA | BAT_CTRL_20U_ENA, 2508c0984e5SSebastian Reichel ~(BAT_CTRL_7U_ENA | BAT_CTRL_20U_ENA)); 2518c0984e5SSebastian Reichel 2528c0984e5SSebastian Reichel if (ret) { 2538c0984e5SSebastian Reichel dev_err(di->dev, "%s failed disabling current source\n", 2548c0984e5SSebastian Reichel __func__); 2558c0984e5SSebastian Reichel goto disable_curr_source; 2568c0984e5SSebastian Reichel } 2578c0984e5SSebastian Reichel 2588c0984e5SSebastian Reichel /* Enable Pull-Up and comparator */ 2598c0984e5SSebastian Reichel ret = abx500_mask_and_set_register_interruptible(di->dev, 2608c0984e5SSebastian Reichel AB8500_CHARGER, AB8500_BAT_CTRL_CURRENT_SOURCE, 2618c0984e5SSebastian Reichel BAT_CTRL_PULL_UP_ENA | BAT_CTRL_CMP_ENA, 2628c0984e5SSebastian Reichel BAT_CTRL_PULL_UP_ENA | BAT_CTRL_CMP_ENA); 2638c0984e5SSebastian Reichel if (ret) { 2648c0984e5SSebastian Reichel dev_err(di->dev, "%s failed enabling PU and comp\n", 2658c0984e5SSebastian Reichel __func__); 2668c0984e5SSebastian Reichel goto enable_pu_comp; 2678c0984e5SSebastian Reichel } 2688c0984e5SSebastian Reichel 2698c0984e5SSebastian Reichel /* 2708c0984e5SSebastian Reichel * We have to wait one 32kHz cycle before disabling 2718c0984e5SSebastian Reichel * ForceBatCtrlCmpHigh since this needs to be written 2728c0984e5SSebastian Reichel * in a separate cycle 2738c0984e5SSebastian Reichel */ 2748c0984e5SSebastian Reichel udelay(32); 2758c0984e5SSebastian Reichel 2768c0984e5SSebastian Reichel /* Disable 'force comparator' */ 2778c0984e5SSebastian Reichel ret = abx500_mask_and_set_register_interruptible(di->dev, 2788c0984e5SSebastian Reichel AB8500_CHARGER, AB8500_BAT_CTRL_CURRENT_SOURCE, 2798c0984e5SSebastian Reichel FORCE_BAT_CTRL_CMP_HIGH, ~FORCE_BAT_CTRL_CMP_HIGH); 2808c0984e5SSebastian Reichel if (ret) { 2818c0984e5SSebastian Reichel dev_err(di->dev, "%s failed disabling force comp\n", 2828c0984e5SSebastian Reichel __func__); 2838c0984e5SSebastian Reichel goto disable_force_comp; 2848c0984e5SSebastian Reichel } 2858c0984e5SSebastian Reichel } 2868c0984e5SSebastian Reichel return ret; 2878c0984e5SSebastian Reichel 2888c0984e5SSebastian Reichel /* 2898c0984e5SSebastian Reichel * We have to try unsetting FORCE_BAT_CTRL_CMP_HIGH one more time 2908c0984e5SSebastian Reichel * if we got an error above 2918c0984e5SSebastian Reichel */ 2928c0984e5SSebastian Reichel disable_curr_source: 2938c0984e5SSebastian Reichel /* Write 0 to the curr bits */ 2948c0984e5SSebastian Reichel ret = abx500_mask_and_set_register_interruptible(di->dev, 2958c0984e5SSebastian Reichel AB8500_CHARGER, AB8500_BAT_CTRL_CURRENT_SOURCE, 2968c0984e5SSebastian Reichel BAT_CTRL_7U_ENA | BAT_CTRL_20U_ENA, 2978c0984e5SSebastian Reichel ~(BAT_CTRL_7U_ENA | BAT_CTRL_20U_ENA)); 2988c0984e5SSebastian Reichel 2998c0984e5SSebastian Reichel if (ret) { 3008c0984e5SSebastian Reichel dev_err(di->dev, "%s failed disabling current source\n", 3018c0984e5SSebastian Reichel __func__); 3028c0984e5SSebastian Reichel return ret; 3038c0984e5SSebastian Reichel } 3048c0984e5SSebastian Reichel enable_pu_comp: 3058c0984e5SSebastian Reichel /* Enable Pull-Up and comparator */ 3068c0984e5SSebastian Reichel ret = abx500_mask_and_set_register_interruptible(di->dev, 3078c0984e5SSebastian Reichel AB8500_CHARGER, AB8500_BAT_CTRL_CURRENT_SOURCE, 3088c0984e5SSebastian Reichel BAT_CTRL_PULL_UP_ENA | BAT_CTRL_CMP_ENA, 3098c0984e5SSebastian Reichel BAT_CTRL_PULL_UP_ENA | BAT_CTRL_CMP_ENA); 3108c0984e5SSebastian Reichel if (ret) { 3118c0984e5SSebastian Reichel dev_err(di->dev, "%s failed enabling PU and comp\n", 3128c0984e5SSebastian Reichel __func__); 3138c0984e5SSebastian Reichel return ret; 3148c0984e5SSebastian Reichel } 3158c0984e5SSebastian Reichel 3168c0984e5SSebastian Reichel disable_force_comp: 3178c0984e5SSebastian Reichel /* 3188c0984e5SSebastian Reichel * We have to wait one 32kHz cycle before disabling 3198c0984e5SSebastian Reichel * ForceBatCtrlCmpHigh since this needs to be written 3208c0984e5SSebastian Reichel * in a separate cycle 3218c0984e5SSebastian Reichel */ 3228c0984e5SSebastian Reichel udelay(32); 3238c0984e5SSebastian Reichel 3248c0984e5SSebastian Reichel /* Disable 'force comparator' */ 3258c0984e5SSebastian Reichel ret = abx500_mask_and_set_register_interruptible(di->dev, 3268c0984e5SSebastian Reichel AB8500_CHARGER, AB8500_BAT_CTRL_CURRENT_SOURCE, 3278c0984e5SSebastian Reichel FORCE_BAT_CTRL_CMP_HIGH, ~FORCE_BAT_CTRL_CMP_HIGH); 3288c0984e5SSebastian Reichel if (ret) { 3298c0984e5SSebastian Reichel dev_err(di->dev, "%s failed disabling force comp\n", 3308c0984e5SSebastian Reichel __func__); 3318c0984e5SSebastian Reichel return ret; 3328c0984e5SSebastian Reichel } 3338c0984e5SSebastian Reichel 3348c0984e5SSebastian Reichel return ret; 3358c0984e5SSebastian Reichel } 3368c0984e5SSebastian Reichel 3378c0984e5SSebastian Reichel /** 3388c0984e5SSebastian Reichel * ab8500_btemp_get_batctrl_res() - get battery resistance 3398c0984e5SSebastian Reichel * @di: pointer to the ab8500_btemp structure 3408c0984e5SSebastian Reichel * 3418c0984e5SSebastian Reichel * This function returns the battery pack identification resistance. 3428c0984e5SSebastian Reichel * Returns value in Ohms. 3438c0984e5SSebastian Reichel */ 3448c0984e5SSebastian Reichel static int ab8500_btemp_get_batctrl_res(struct ab8500_btemp *di) 3458c0984e5SSebastian Reichel { 3468c0984e5SSebastian Reichel int ret; 3478c0984e5SSebastian Reichel int batctrl = 0; 3488c0984e5SSebastian Reichel int res; 3498c0984e5SSebastian Reichel int inst_curr; 3508c0984e5SSebastian Reichel int i; 3518c0984e5SSebastian Reichel 3528c0984e5SSebastian Reichel /* 3538c0984e5SSebastian Reichel * BATCTRL current sources are included on AB8500 cut2.0 3548c0984e5SSebastian Reichel * and future versions 3558c0984e5SSebastian Reichel */ 3568c0984e5SSebastian Reichel ret = ab8500_btemp_curr_source_enable(di, true); 3578c0984e5SSebastian Reichel if (ret) { 3588c0984e5SSebastian Reichel dev_err(di->dev, "%s curr source enabled failed\n", __func__); 3598c0984e5SSebastian Reichel return ret; 3608c0984e5SSebastian Reichel } 3618c0984e5SSebastian Reichel 3628c0984e5SSebastian Reichel if (!di->fg) 3638c0984e5SSebastian Reichel di->fg = ab8500_fg_get(); 3648c0984e5SSebastian Reichel if (!di->fg) { 3658c0984e5SSebastian Reichel dev_err(di->dev, "No fg found\n"); 3668c0984e5SSebastian Reichel return -EINVAL; 3678c0984e5SSebastian Reichel } 3688c0984e5SSebastian Reichel 3698c0984e5SSebastian Reichel ret = ab8500_fg_inst_curr_start(di->fg); 3708c0984e5SSebastian Reichel 3718c0984e5SSebastian Reichel if (ret) { 3728c0984e5SSebastian Reichel dev_err(di->dev, "Failed to start current measurement\n"); 3738c0984e5SSebastian Reichel return ret; 3748c0984e5SSebastian Reichel } 3758c0984e5SSebastian Reichel 3768c0984e5SSebastian Reichel do { 3778c0984e5SSebastian Reichel msleep(20); 3788c0984e5SSebastian Reichel } while (!ab8500_fg_inst_curr_started(di->fg)); 3798c0984e5SSebastian Reichel 3808c0984e5SSebastian Reichel i = 0; 3818c0984e5SSebastian Reichel 3828c0984e5SSebastian Reichel do { 3838c0984e5SSebastian Reichel batctrl += ab8500_btemp_read_batctrl_voltage(di); 3848c0984e5SSebastian Reichel i++; 3858c0984e5SSebastian Reichel msleep(20); 3868c0984e5SSebastian Reichel } while (!ab8500_fg_inst_curr_done(di->fg)); 3878c0984e5SSebastian Reichel batctrl /= i; 3888c0984e5SSebastian Reichel 3898c0984e5SSebastian Reichel ret = ab8500_fg_inst_curr_finalize(di->fg, &inst_curr); 3908c0984e5SSebastian Reichel if (ret) { 3918c0984e5SSebastian Reichel dev_err(di->dev, "Failed to finalize current measurement\n"); 3928c0984e5SSebastian Reichel return ret; 3938c0984e5SSebastian Reichel } 3948c0984e5SSebastian Reichel 3958c0984e5SSebastian Reichel res = ab8500_btemp_batctrl_volt_to_res(di, batctrl, inst_curr); 3968c0984e5SSebastian Reichel 3978c0984e5SSebastian Reichel ret = ab8500_btemp_curr_source_enable(di, false); 3988c0984e5SSebastian Reichel if (ret) { 3998c0984e5SSebastian Reichel dev_err(di->dev, "%s curr source disable failed\n", __func__); 4008c0984e5SSebastian Reichel return ret; 4018c0984e5SSebastian Reichel } 4028c0984e5SSebastian Reichel 4038c0984e5SSebastian Reichel dev_dbg(di->dev, "%s batctrl: %d res: %d inst_curr: %d samples: %d\n", 4048c0984e5SSebastian Reichel __func__, batctrl, res, inst_curr, i); 4058c0984e5SSebastian Reichel 4068c0984e5SSebastian Reichel return res; 4078c0984e5SSebastian Reichel } 4088c0984e5SSebastian Reichel 4098c0984e5SSebastian Reichel /** 4108c0984e5SSebastian Reichel * ab8500_btemp_res_to_temp() - resistance to temperature 4118c0984e5SSebastian Reichel * @di: pointer to the ab8500_btemp structure 4128c0984e5SSebastian Reichel * @tbl: pointer to the resiatance to temperature table 4138c0984e5SSebastian Reichel * @tbl_size: size of the resistance to temperature table 4148c0984e5SSebastian Reichel * @res: resistance to calculate the temperature from 4158c0984e5SSebastian Reichel * 416c56ca24aSColin Ian King * This function returns the battery temperature in degrees Celsius 4178c0984e5SSebastian Reichel * based on the NTC resistance. 4188c0984e5SSebastian Reichel */ 4198c0984e5SSebastian Reichel static int ab8500_btemp_res_to_temp(struct ab8500_btemp *di, 4208c0984e5SSebastian Reichel const struct abx500_res_to_temp *tbl, int tbl_size, int res) 4218c0984e5SSebastian Reichel { 42233237fb8SGustavo A. R. Silva int i; 4238c0984e5SSebastian Reichel /* 4248c0984e5SSebastian Reichel * Calculate the formula for the straight line 4258c0984e5SSebastian Reichel * Simple interpolation if we are within 4268c0984e5SSebastian Reichel * the resistance table limits, extrapolate 4278c0984e5SSebastian Reichel * if resistance is outside the limits. 4288c0984e5SSebastian Reichel */ 4298c0984e5SSebastian Reichel if (res > tbl[0].resist) 4308c0984e5SSebastian Reichel i = 0; 4318c0984e5SSebastian Reichel else if (res <= tbl[tbl_size - 1].resist) 4328c0984e5SSebastian Reichel i = tbl_size - 2; 4338c0984e5SSebastian Reichel else { 4348c0984e5SSebastian Reichel i = 0; 4358c0984e5SSebastian Reichel while (!(res <= tbl[i].resist && 4368c0984e5SSebastian Reichel res > tbl[i + 1].resist)) 4378c0984e5SSebastian Reichel i++; 4388c0984e5SSebastian Reichel } 4398c0984e5SSebastian Reichel 44033237fb8SGustavo A. R. Silva return tbl[i].temp + ((tbl[i + 1].temp - tbl[i].temp) * 4418c0984e5SSebastian Reichel (res - tbl[i].resist)) / (tbl[i + 1].resist - tbl[i].resist); 4428c0984e5SSebastian Reichel } 4438c0984e5SSebastian Reichel 4448c0984e5SSebastian Reichel /** 4458c0984e5SSebastian Reichel * ab8500_btemp_measure_temp() - measure battery temperature 4468c0984e5SSebastian Reichel * @di: pointer to the ab8500_btemp structure 4478c0984e5SSebastian Reichel * 4488c0984e5SSebastian Reichel * Returns battery temperature (on success) else the previous temperature 4498c0984e5SSebastian Reichel */ 4508c0984e5SSebastian Reichel static int ab8500_btemp_measure_temp(struct ab8500_btemp *di) 4518c0984e5SSebastian Reichel { 4520a8686e3SLinus Walleij int temp, ret; 4538c0984e5SSebastian Reichel static int prev; 4548c0984e5SSebastian Reichel int rbat, rntc, vntc; 4558c0984e5SSebastian Reichel u8 id; 4568c0984e5SSebastian Reichel 4578c0984e5SSebastian Reichel id = di->bm->batt_id; 4588c0984e5SSebastian Reichel 4598c0984e5SSebastian Reichel if (di->bm->adc_therm == ABx500_ADC_THERM_BATCTRL && 4608c0984e5SSebastian Reichel id != BATTERY_UNKNOWN) { 4618c0984e5SSebastian Reichel 4628c0984e5SSebastian Reichel rbat = ab8500_btemp_get_batctrl_res(di); 4638c0984e5SSebastian Reichel if (rbat < 0) { 4648c0984e5SSebastian Reichel dev_err(di->dev, "%s get batctrl res failed\n", 4658c0984e5SSebastian Reichel __func__); 4668c0984e5SSebastian Reichel /* 4678c0984e5SSebastian Reichel * Return out-of-range temperature so that 4688c0984e5SSebastian Reichel * charging is stopped 4698c0984e5SSebastian Reichel */ 4708c0984e5SSebastian Reichel return BTEMP_THERMAL_LOW_LIMIT; 4718c0984e5SSebastian Reichel } 4728c0984e5SSebastian Reichel 4738c0984e5SSebastian Reichel temp = ab8500_btemp_res_to_temp(di, 4748c0984e5SSebastian Reichel di->bm->bat_type[id].r_to_t_tbl, 4758c0984e5SSebastian Reichel di->bm->bat_type[id].n_temp_tbl_elements, rbat); 4768c0984e5SSebastian Reichel } else { 4770a8686e3SLinus Walleij ret = iio_read_channel_processed(di->btemp_ball, &vntc); 4780a8686e3SLinus Walleij if (ret < 0) { 4798c0984e5SSebastian Reichel dev_err(di->dev, 4800a8686e3SLinus Walleij "%s ADC conversion failed," 4818c0984e5SSebastian Reichel " using previous value\n", __func__); 4828c0984e5SSebastian Reichel return prev; 4838c0984e5SSebastian Reichel } 4848c0984e5SSebastian Reichel /* 4858c0984e5SSebastian Reichel * The PCB NTC is sourced from VTVOUT via a 230kOhm 4868c0984e5SSebastian Reichel * resistor. 4878c0984e5SSebastian Reichel */ 4888c0984e5SSebastian Reichel rntc = 230000 * vntc / (VTVOUT_V - vntc); 4898c0984e5SSebastian Reichel 4908c0984e5SSebastian Reichel temp = ab8500_btemp_res_to_temp(di, 4918c0984e5SSebastian Reichel di->bm->bat_type[id].r_to_t_tbl, 4928c0984e5SSebastian Reichel di->bm->bat_type[id].n_temp_tbl_elements, rntc); 4938c0984e5SSebastian Reichel prev = temp; 4948c0984e5SSebastian Reichel } 4958c0984e5SSebastian Reichel dev_dbg(di->dev, "Battery temperature is %d\n", temp); 4968c0984e5SSebastian Reichel return temp; 4978c0984e5SSebastian Reichel } 4988c0984e5SSebastian Reichel 4998c0984e5SSebastian Reichel /** 5008c0984e5SSebastian Reichel * ab8500_btemp_id() - Identify the connected battery 5018c0984e5SSebastian Reichel * @di: pointer to the ab8500_btemp structure 5028c0984e5SSebastian Reichel * 5038c0984e5SSebastian Reichel * This function will try to identify the battery by reading the ID 5048c0984e5SSebastian Reichel * resistor. Some brands use a combined ID resistor with a NTC resistor to 5058c0984e5SSebastian Reichel * both be able to identify and to read the temperature of it. 5068c0984e5SSebastian Reichel */ 5078c0984e5SSebastian Reichel static int ab8500_btemp_id(struct ab8500_btemp *di) 5088c0984e5SSebastian Reichel { 5098c0984e5SSebastian Reichel int res; 5108c0984e5SSebastian Reichel u8 i; 5118c0984e5SSebastian Reichel 5124c4268dcSLinus Walleij di->curr_source = BTEMP_BATCTRL_CURR_SRC_7UA; 5138c0984e5SSebastian Reichel di->bm->batt_id = BATTERY_UNKNOWN; 5148c0984e5SSebastian Reichel 5158c0984e5SSebastian Reichel res = ab8500_btemp_get_batctrl_res(di); 5168c0984e5SSebastian Reichel if (res < 0) { 5178c0984e5SSebastian Reichel dev_err(di->dev, "%s get batctrl res failed\n", __func__); 5188c0984e5SSebastian Reichel return -ENXIO; 5198c0984e5SSebastian Reichel } 5208c0984e5SSebastian Reichel 5218c0984e5SSebastian Reichel /* BATTERY_UNKNOWN is defined on position 0, skip it! */ 5228c0984e5SSebastian Reichel for (i = BATTERY_UNKNOWN + 1; i < di->bm->n_btypes; i++) { 5238c0984e5SSebastian Reichel if ((res <= di->bm->bat_type[i].resis_high) && 5248c0984e5SSebastian Reichel (res >= di->bm->bat_type[i].resis_low)) { 5258c0984e5SSebastian Reichel dev_dbg(di->dev, "Battery detected on %s" 5268c0984e5SSebastian Reichel " low %d < res %d < high: %d" 5278c0984e5SSebastian Reichel " index: %d\n", 5288c0984e5SSebastian Reichel di->bm->adc_therm == ABx500_ADC_THERM_BATCTRL ? 5298c0984e5SSebastian Reichel "BATCTRL" : "BATTEMP", 5308c0984e5SSebastian Reichel di->bm->bat_type[i].resis_low, res, 5318c0984e5SSebastian Reichel di->bm->bat_type[i].resis_high, i); 5328c0984e5SSebastian Reichel 5338c0984e5SSebastian Reichel di->bm->batt_id = i; 5348c0984e5SSebastian Reichel break; 5358c0984e5SSebastian Reichel } 5368c0984e5SSebastian Reichel } 5378c0984e5SSebastian Reichel 5388c0984e5SSebastian Reichel if (di->bm->batt_id == BATTERY_UNKNOWN) { 5398c0984e5SSebastian Reichel dev_warn(di->dev, "Battery identified as unknown" 5408c0984e5SSebastian Reichel ", resistance %d Ohm\n", res); 5418c0984e5SSebastian Reichel return -ENXIO; 5428c0984e5SSebastian Reichel } 5438c0984e5SSebastian Reichel 5448c0984e5SSebastian Reichel /* 5458c0984e5SSebastian Reichel * We only have to change current source if the 5468c0984e5SSebastian Reichel * detected type is Type 1. 5478c0984e5SSebastian Reichel */ 5488c0984e5SSebastian Reichel if (di->bm->adc_therm == ABx500_ADC_THERM_BATCTRL && 5498c0984e5SSebastian Reichel di->bm->batt_id == 1) { 5508c0984e5SSebastian Reichel dev_dbg(di->dev, "Set BATCTRL current source to 20uA\n"); 5518c0984e5SSebastian Reichel di->curr_source = BTEMP_BATCTRL_CURR_SRC_20UA; 5528c0984e5SSebastian Reichel } 5538c0984e5SSebastian Reichel 5548c0984e5SSebastian Reichel return di->bm->batt_id; 5558c0984e5SSebastian Reichel } 5568c0984e5SSebastian Reichel 5578c0984e5SSebastian Reichel /** 5588c0984e5SSebastian Reichel * ab8500_btemp_periodic_work() - Measuring the temperature periodically 5598c0984e5SSebastian Reichel * @work: pointer to the work_struct structure 5608c0984e5SSebastian Reichel * 5618c0984e5SSebastian Reichel * Work function for measuring the temperature periodically 5628c0984e5SSebastian Reichel */ 5638c0984e5SSebastian Reichel static void ab8500_btemp_periodic_work(struct work_struct *work) 5648c0984e5SSebastian Reichel { 5658c0984e5SSebastian Reichel int interval; 5668c0984e5SSebastian Reichel int bat_temp; 5678c0984e5SSebastian Reichel struct ab8500_btemp *di = container_of(work, 5688c0984e5SSebastian Reichel struct ab8500_btemp, btemp_periodic_work.work); 5698c0984e5SSebastian Reichel 5708c0984e5SSebastian Reichel if (!di->initialized) { 5718c0984e5SSebastian Reichel /* Identify the battery */ 5728c0984e5SSebastian Reichel if (ab8500_btemp_id(di) < 0) 5738c0984e5SSebastian Reichel dev_warn(di->dev, "failed to identify the battery\n"); 5748c0984e5SSebastian Reichel } 5758c0984e5SSebastian Reichel 5768c0984e5SSebastian Reichel bat_temp = ab8500_btemp_measure_temp(di); 5778c0984e5SSebastian Reichel /* 5788c0984e5SSebastian Reichel * Filter battery temperature. 5798c0984e5SSebastian Reichel * Allow direct updates on temperature only if two samples result in 5808c0984e5SSebastian Reichel * same temperature. Else only allow 1 degree change from previous 5818c0984e5SSebastian Reichel * reported value in the direction of the new measurement. 5828c0984e5SSebastian Reichel */ 5838c0984e5SSebastian Reichel if ((bat_temp == di->prev_bat_temp) || !di->initialized) { 5848c0984e5SSebastian Reichel if ((di->bat_temp != di->prev_bat_temp) || !di->initialized) { 5858c0984e5SSebastian Reichel di->initialized = true; 5868c0984e5SSebastian Reichel di->bat_temp = bat_temp; 5878c0984e5SSebastian Reichel power_supply_changed(di->btemp_psy); 5888c0984e5SSebastian Reichel } 5898c0984e5SSebastian Reichel } else if (bat_temp < di->prev_bat_temp) { 5908c0984e5SSebastian Reichel di->bat_temp--; 5918c0984e5SSebastian Reichel power_supply_changed(di->btemp_psy); 5928c0984e5SSebastian Reichel } else if (bat_temp > di->prev_bat_temp) { 5938c0984e5SSebastian Reichel di->bat_temp++; 5948c0984e5SSebastian Reichel power_supply_changed(di->btemp_psy); 5958c0984e5SSebastian Reichel } 5968c0984e5SSebastian Reichel di->prev_bat_temp = bat_temp; 5978c0984e5SSebastian Reichel 5988c0984e5SSebastian Reichel if (di->events.ac_conn || di->events.usb_conn) 5998c0984e5SSebastian Reichel interval = di->bm->temp_interval_chg; 6008c0984e5SSebastian Reichel else 6018c0984e5SSebastian Reichel interval = di->bm->temp_interval_nochg; 6028c0984e5SSebastian Reichel 6038c0984e5SSebastian Reichel /* Schedule a new measurement */ 6048c0984e5SSebastian Reichel queue_delayed_work(di->btemp_wq, 6058c0984e5SSebastian Reichel &di->btemp_periodic_work, 6068c0984e5SSebastian Reichel round_jiffies(interval * HZ)); 6078c0984e5SSebastian Reichel } 6088c0984e5SSebastian Reichel 6098c0984e5SSebastian Reichel /** 6108c0984e5SSebastian Reichel * ab8500_btemp_batctrlindb_handler() - battery removal detected 6118c0984e5SSebastian Reichel * @irq: interrupt number 6128c0984e5SSebastian Reichel * @_di: void pointer that has to address of ab8500_btemp 6138c0984e5SSebastian Reichel * 6148c0984e5SSebastian Reichel * Returns IRQ status(IRQ_HANDLED) 6158c0984e5SSebastian Reichel */ 6168c0984e5SSebastian Reichel static irqreturn_t ab8500_btemp_batctrlindb_handler(int irq, void *_di) 6178c0984e5SSebastian Reichel { 6188c0984e5SSebastian Reichel struct ab8500_btemp *di = _di; 6198c0984e5SSebastian Reichel dev_err(di->dev, "Battery removal detected!\n"); 6208c0984e5SSebastian Reichel 6218c0984e5SSebastian Reichel di->events.batt_rem = true; 6228c0984e5SSebastian Reichel power_supply_changed(di->btemp_psy); 6238c0984e5SSebastian Reichel 6248c0984e5SSebastian Reichel return IRQ_HANDLED; 6258c0984e5SSebastian Reichel } 6268c0984e5SSebastian Reichel 6278c0984e5SSebastian Reichel /** 6288c0984e5SSebastian Reichel * ab8500_btemp_templow_handler() - battery temp lower than 10 degrees 6298c0984e5SSebastian Reichel * @irq: interrupt number 6308c0984e5SSebastian Reichel * @_di: void pointer that has to address of ab8500_btemp 6318c0984e5SSebastian Reichel * 6328c0984e5SSebastian Reichel * Returns IRQ status(IRQ_HANDLED) 6338c0984e5SSebastian Reichel */ 6348c0984e5SSebastian Reichel static irqreturn_t ab8500_btemp_templow_handler(int irq, void *_di) 6358c0984e5SSebastian Reichel { 6368c0984e5SSebastian Reichel struct ab8500_btemp *di = _di; 6378c0984e5SSebastian Reichel 6388c0984e5SSebastian Reichel if (is_ab8500_3p3_or_earlier(di->parent)) { 6398c0984e5SSebastian Reichel dev_dbg(di->dev, "Ignore false btemp low irq" 6408c0984e5SSebastian Reichel " for ABB cut 1.0, 1.1, 2.0 and 3.3\n"); 6418c0984e5SSebastian Reichel } else { 6428c0984e5SSebastian Reichel dev_crit(di->dev, "Battery temperature lower than -10deg c\n"); 6438c0984e5SSebastian Reichel 6448c0984e5SSebastian Reichel di->events.btemp_low = true; 6458c0984e5SSebastian Reichel di->events.btemp_high = false; 6468c0984e5SSebastian Reichel di->events.btemp_medhigh = false; 6478c0984e5SSebastian Reichel di->events.btemp_lowmed = false; 6488c0984e5SSebastian Reichel power_supply_changed(di->btemp_psy); 6498c0984e5SSebastian Reichel } 6508c0984e5SSebastian Reichel 6518c0984e5SSebastian Reichel return IRQ_HANDLED; 6528c0984e5SSebastian Reichel } 6538c0984e5SSebastian Reichel 6548c0984e5SSebastian Reichel /** 6558c0984e5SSebastian Reichel * ab8500_btemp_temphigh_handler() - battery temp higher than max temp 6568c0984e5SSebastian Reichel * @irq: interrupt number 6578c0984e5SSebastian Reichel * @_di: void pointer that has to address of ab8500_btemp 6588c0984e5SSebastian Reichel * 6598c0984e5SSebastian Reichel * Returns IRQ status(IRQ_HANDLED) 6608c0984e5SSebastian Reichel */ 6618c0984e5SSebastian Reichel static irqreturn_t ab8500_btemp_temphigh_handler(int irq, void *_di) 6628c0984e5SSebastian Reichel { 6638c0984e5SSebastian Reichel struct ab8500_btemp *di = _di; 6648c0984e5SSebastian Reichel 6658c0984e5SSebastian Reichel dev_crit(di->dev, "Battery temperature is higher than MAX temp\n"); 6668c0984e5SSebastian Reichel 6678c0984e5SSebastian Reichel di->events.btemp_high = true; 6688c0984e5SSebastian Reichel di->events.btemp_medhigh = false; 6698c0984e5SSebastian Reichel di->events.btemp_lowmed = false; 6708c0984e5SSebastian Reichel di->events.btemp_low = false; 6718c0984e5SSebastian Reichel power_supply_changed(di->btemp_psy); 6728c0984e5SSebastian Reichel 6738c0984e5SSebastian Reichel return IRQ_HANDLED; 6748c0984e5SSebastian Reichel } 6758c0984e5SSebastian Reichel 6768c0984e5SSebastian Reichel /** 6778c0984e5SSebastian Reichel * ab8500_btemp_lowmed_handler() - battery temp between low and medium 6788c0984e5SSebastian Reichel * @irq: interrupt number 6798c0984e5SSebastian Reichel * @_di: void pointer that has to address of ab8500_btemp 6808c0984e5SSebastian Reichel * 6818c0984e5SSebastian Reichel * Returns IRQ status(IRQ_HANDLED) 6828c0984e5SSebastian Reichel */ 6838c0984e5SSebastian Reichel static irqreturn_t ab8500_btemp_lowmed_handler(int irq, void *_di) 6848c0984e5SSebastian Reichel { 6858c0984e5SSebastian Reichel struct ab8500_btemp *di = _di; 6868c0984e5SSebastian Reichel 6878c0984e5SSebastian Reichel dev_dbg(di->dev, "Battery temperature is between low and medium\n"); 6888c0984e5SSebastian Reichel 6898c0984e5SSebastian Reichel di->events.btemp_lowmed = true; 6908c0984e5SSebastian Reichel di->events.btemp_medhigh = false; 6918c0984e5SSebastian Reichel di->events.btemp_high = false; 6928c0984e5SSebastian Reichel di->events.btemp_low = false; 6938c0984e5SSebastian Reichel power_supply_changed(di->btemp_psy); 6948c0984e5SSebastian Reichel 6958c0984e5SSebastian Reichel return IRQ_HANDLED; 6968c0984e5SSebastian Reichel } 6978c0984e5SSebastian Reichel 6988c0984e5SSebastian Reichel /** 6998c0984e5SSebastian Reichel * ab8500_btemp_medhigh_handler() - battery temp between medium and high 7008c0984e5SSebastian Reichel * @irq: interrupt number 7018c0984e5SSebastian Reichel * @_di: void pointer that has to address of ab8500_btemp 7028c0984e5SSebastian Reichel * 7038c0984e5SSebastian Reichel * Returns IRQ status(IRQ_HANDLED) 7048c0984e5SSebastian Reichel */ 7058c0984e5SSebastian Reichel static irqreturn_t ab8500_btemp_medhigh_handler(int irq, void *_di) 7068c0984e5SSebastian Reichel { 7078c0984e5SSebastian Reichel struct ab8500_btemp *di = _di; 7088c0984e5SSebastian Reichel 7098c0984e5SSebastian Reichel dev_dbg(di->dev, "Battery temperature is between medium and high\n"); 7108c0984e5SSebastian Reichel 7118c0984e5SSebastian Reichel di->events.btemp_medhigh = true; 7128c0984e5SSebastian Reichel di->events.btemp_lowmed = false; 7138c0984e5SSebastian Reichel di->events.btemp_high = false; 7148c0984e5SSebastian Reichel di->events.btemp_low = false; 7158c0984e5SSebastian Reichel power_supply_changed(di->btemp_psy); 7168c0984e5SSebastian Reichel 7178c0984e5SSebastian Reichel return IRQ_HANDLED; 7188c0984e5SSebastian Reichel } 7198c0984e5SSebastian Reichel 7208c0984e5SSebastian Reichel /** 7218c0984e5SSebastian Reichel * ab8500_btemp_periodic() - Periodic temperature measurements 7228c0984e5SSebastian Reichel * @di: pointer to the ab8500_btemp structure 7238c0984e5SSebastian Reichel * @enable: enable or disable periodic temperature measurements 7248c0984e5SSebastian Reichel * 7258c0984e5SSebastian Reichel * Starts of stops periodic temperature measurements. Periodic measurements 7268c0984e5SSebastian Reichel * should only be done when a charger is connected. 7278c0984e5SSebastian Reichel */ 7288c0984e5SSebastian Reichel static void ab8500_btemp_periodic(struct ab8500_btemp *di, 7298c0984e5SSebastian Reichel bool enable) 7308c0984e5SSebastian Reichel { 7318c0984e5SSebastian Reichel dev_dbg(di->dev, "Enable periodic temperature measurements: %d\n", 7328c0984e5SSebastian Reichel enable); 7338c0984e5SSebastian Reichel /* 7348c0984e5SSebastian Reichel * Make sure a new measurement is done directly by cancelling 7358c0984e5SSebastian Reichel * any pending work 7368c0984e5SSebastian Reichel */ 7378c0984e5SSebastian Reichel cancel_delayed_work_sync(&di->btemp_periodic_work); 7388c0984e5SSebastian Reichel 7398c0984e5SSebastian Reichel if (enable) 7408c0984e5SSebastian Reichel queue_delayed_work(di->btemp_wq, &di->btemp_periodic_work, 0); 7418c0984e5SSebastian Reichel } 7428c0984e5SSebastian Reichel 7438c0984e5SSebastian Reichel /** 7448c0984e5SSebastian Reichel * ab8500_btemp_get_temp() - get battery temperature 7458c0984e5SSebastian Reichel * @di: pointer to the ab8500_btemp structure 7468c0984e5SSebastian Reichel * 7478c0984e5SSebastian Reichel * Returns battery temperature 7488c0984e5SSebastian Reichel */ 749417c0fc2SLinus Walleij static int ab8500_btemp_get_temp(struct ab8500_btemp *di) 7508c0984e5SSebastian Reichel { 7518c0984e5SSebastian Reichel int temp = 0; 7528c0984e5SSebastian Reichel 7538c0984e5SSebastian Reichel /* 7548c0984e5SSebastian Reichel * The BTEMP events are not reliabe on AB8500 cut3.3 7558c0984e5SSebastian Reichel * and prior versions 7568c0984e5SSebastian Reichel */ 7578c0984e5SSebastian Reichel if (is_ab8500_3p3_or_earlier(di->parent)) { 7588c0984e5SSebastian Reichel temp = di->bat_temp * 10; 7598c0984e5SSebastian Reichel } else { 7608c0984e5SSebastian Reichel if (di->events.btemp_low) { 7618c0984e5SSebastian Reichel if (temp > di->btemp_ranges.btemp_low_limit) 7628c0984e5SSebastian Reichel temp = di->btemp_ranges.btemp_low_limit * 10; 7638c0984e5SSebastian Reichel else 7648c0984e5SSebastian Reichel temp = di->bat_temp * 10; 7658c0984e5SSebastian Reichel } else if (di->events.btemp_high) { 7668c0984e5SSebastian Reichel if (temp < di->btemp_ranges.btemp_high_limit) 7678c0984e5SSebastian Reichel temp = di->btemp_ranges.btemp_high_limit * 10; 7688c0984e5SSebastian Reichel else 7698c0984e5SSebastian Reichel temp = di->bat_temp * 10; 7708c0984e5SSebastian Reichel } else if (di->events.btemp_lowmed) { 7718c0984e5SSebastian Reichel if (temp > di->btemp_ranges.btemp_med_limit) 7728c0984e5SSebastian Reichel temp = di->btemp_ranges.btemp_med_limit * 10; 7738c0984e5SSebastian Reichel else 7748c0984e5SSebastian Reichel temp = di->bat_temp * 10; 7758c0984e5SSebastian Reichel } else if (di->events.btemp_medhigh) { 7768c0984e5SSebastian Reichel if (temp < di->btemp_ranges.btemp_med_limit) 7778c0984e5SSebastian Reichel temp = di->btemp_ranges.btemp_med_limit * 10; 7788c0984e5SSebastian Reichel else 7798c0984e5SSebastian Reichel temp = di->bat_temp * 10; 7808c0984e5SSebastian Reichel } else 7818c0984e5SSebastian Reichel temp = di->bat_temp * 10; 7828c0984e5SSebastian Reichel } 7838c0984e5SSebastian Reichel return temp; 7848c0984e5SSebastian Reichel } 7858c0984e5SSebastian Reichel 7868c0984e5SSebastian Reichel /** 7878c0984e5SSebastian Reichel * ab8500_btemp_get_property() - get the btemp properties 7888c0984e5SSebastian Reichel * @psy: pointer to the power_supply structure 7898c0984e5SSebastian Reichel * @psp: pointer to the power_supply_property structure 7908c0984e5SSebastian Reichel * @val: pointer to the power_supply_propval union 7918c0984e5SSebastian Reichel * 7928c0984e5SSebastian Reichel * This function gets called when an application tries to get the btemp 7938c0984e5SSebastian Reichel * properties by reading the sysfs files. 7948c0984e5SSebastian Reichel * online: presence of the battery 7958c0984e5SSebastian Reichel * present: presence of the battery 7968c0984e5SSebastian Reichel * technology: battery technology 7978c0984e5SSebastian Reichel * temp: battery temperature 7988c0984e5SSebastian Reichel * Returns error code in case of failure else 0(on success) 7998c0984e5SSebastian Reichel */ 8008c0984e5SSebastian Reichel static int ab8500_btemp_get_property(struct power_supply *psy, 8018c0984e5SSebastian Reichel enum power_supply_property psp, 8028c0984e5SSebastian Reichel union power_supply_propval *val) 8038c0984e5SSebastian Reichel { 8048c0984e5SSebastian Reichel struct ab8500_btemp *di = power_supply_get_drvdata(psy); 8058c0984e5SSebastian Reichel 8068c0984e5SSebastian Reichel switch (psp) { 8078c0984e5SSebastian Reichel case POWER_SUPPLY_PROP_PRESENT: 8088c0984e5SSebastian Reichel case POWER_SUPPLY_PROP_ONLINE: 8098c0984e5SSebastian Reichel if (di->events.batt_rem) 8108c0984e5SSebastian Reichel val->intval = 0; 8118c0984e5SSebastian Reichel else 8128c0984e5SSebastian Reichel val->intval = 1; 8138c0984e5SSebastian Reichel break; 8148c0984e5SSebastian Reichel case POWER_SUPPLY_PROP_TECHNOLOGY: 8158c0984e5SSebastian Reichel val->intval = di->bm->bat_type[di->bm->batt_id].name; 8168c0984e5SSebastian Reichel break; 8178c0984e5SSebastian Reichel case POWER_SUPPLY_PROP_TEMP: 8188c0984e5SSebastian Reichel val->intval = ab8500_btemp_get_temp(di); 8198c0984e5SSebastian Reichel break; 8208c0984e5SSebastian Reichel default: 8218c0984e5SSebastian Reichel return -EINVAL; 8228c0984e5SSebastian Reichel } 8238c0984e5SSebastian Reichel return 0; 8248c0984e5SSebastian Reichel } 8258c0984e5SSebastian Reichel 8268c0984e5SSebastian Reichel static int ab8500_btemp_get_ext_psy_data(struct device *dev, void *data) 8278c0984e5SSebastian Reichel { 8288c0984e5SSebastian Reichel struct power_supply *psy; 8298c0984e5SSebastian Reichel struct power_supply *ext = dev_get_drvdata(dev); 8308c0984e5SSebastian Reichel const char **supplicants = (const char **)ext->supplied_to; 8318c0984e5SSebastian Reichel struct ab8500_btemp *di; 8328c0984e5SSebastian Reichel union power_supply_propval ret; 8338c0984e5SSebastian Reichel int j; 8348c0984e5SSebastian Reichel 8358c0984e5SSebastian Reichel psy = (struct power_supply *)data; 8368c0984e5SSebastian Reichel di = power_supply_get_drvdata(psy); 8378c0984e5SSebastian Reichel 8388c0984e5SSebastian Reichel /* 8398c0984e5SSebastian Reichel * For all psy where the name of your driver 8408c0984e5SSebastian Reichel * appears in any supplied_to 8418c0984e5SSebastian Reichel */ 8428c0984e5SSebastian Reichel j = match_string(supplicants, ext->num_supplicants, psy->desc->name); 8438c0984e5SSebastian Reichel if (j < 0) 8448c0984e5SSebastian Reichel return 0; 8458c0984e5SSebastian Reichel 8468c0984e5SSebastian Reichel /* Go through all properties for the psy */ 8478c0984e5SSebastian Reichel for (j = 0; j < ext->desc->num_properties; j++) { 8488c0984e5SSebastian Reichel enum power_supply_property prop; 8498c0984e5SSebastian Reichel prop = ext->desc->properties[j]; 8508c0984e5SSebastian Reichel 8518c0984e5SSebastian Reichel if (power_supply_get_property(ext, prop, &ret)) 8528c0984e5SSebastian Reichel continue; 8538c0984e5SSebastian Reichel 8548c0984e5SSebastian Reichel switch (prop) { 8558c0984e5SSebastian Reichel case POWER_SUPPLY_PROP_PRESENT: 8568c0984e5SSebastian Reichel switch (ext->desc->type) { 8578c0984e5SSebastian Reichel case POWER_SUPPLY_TYPE_MAINS: 8588c0984e5SSebastian Reichel /* AC disconnected */ 8598c0984e5SSebastian Reichel if (!ret.intval && di->events.ac_conn) { 8608c0984e5SSebastian Reichel di->events.ac_conn = false; 8618c0984e5SSebastian Reichel } 8628c0984e5SSebastian Reichel /* AC connected */ 8638c0984e5SSebastian Reichel else if (ret.intval && !di->events.ac_conn) { 8648c0984e5SSebastian Reichel di->events.ac_conn = true; 8658c0984e5SSebastian Reichel if (!di->events.usb_conn) 8668c0984e5SSebastian Reichel ab8500_btemp_periodic(di, true); 8678c0984e5SSebastian Reichel } 8688c0984e5SSebastian Reichel break; 8698c0984e5SSebastian Reichel case POWER_SUPPLY_TYPE_USB: 8708c0984e5SSebastian Reichel /* USB disconnected */ 8718c0984e5SSebastian Reichel if (!ret.intval && di->events.usb_conn) { 8728c0984e5SSebastian Reichel di->events.usb_conn = false; 8738c0984e5SSebastian Reichel } 8748c0984e5SSebastian Reichel /* USB connected */ 8758c0984e5SSebastian Reichel else if (ret.intval && !di->events.usb_conn) { 8768c0984e5SSebastian Reichel di->events.usb_conn = true; 8778c0984e5SSebastian Reichel if (!di->events.ac_conn) 8788c0984e5SSebastian Reichel ab8500_btemp_periodic(di, true); 8798c0984e5SSebastian Reichel } 8808c0984e5SSebastian Reichel break; 8818c0984e5SSebastian Reichel default: 8828c0984e5SSebastian Reichel break; 8838c0984e5SSebastian Reichel } 8848c0984e5SSebastian Reichel break; 8858c0984e5SSebastian Reichel default: 8868c0984e5SSebastian Reichel break; 8878c0984e5SSebastian Reichel } 8888c0984e5SSebastian Reichel } 8898c0984e5SSebastian Reichel return 0; 8908c0984e5SSebastian Reichel } 8918c0984e5SSebastian Reichel 8928c0984e5SSebastian Reichel /** 8938c0984e5SSebastian Reichel * ab8500_btemp_external_power_changed() - callback for power supply changes 8948c0984e5SSebastian Reichel * @psy: pointer to the structure power_supply 8958c0984e5SSebastian Reichel * 8968c0984e5SSebastian Reichel * This function is pointing to the function pointer external_power_changed 8978c0984e5SSebastian Reichel * of the structure power_supply. 8988c0984e5SSebastian Reichel * This function gets executed when there is a change in the external power 8998c0984e5SSebastian Reichel * supply to the btemp. 9008c0984e5SSebastian Reichel */ 9018c0984e5SSebastian Reichel static void ab8500_btemp_external_power_changed(struct power_supply *psy) 9028c0984e5SSebastian Reichel { 9038c0984e5SSebastian Reichel struct ab8500_btemp *di = power_supply_get_drvdata(psy); 9048c0984e5SSebastian Reichel 9058c0984e5SSebastian Reichel class_for_each_device(power_supply_class, NULL, 9068c0984e5SSebastian Reichel di->btemp_psy, ab8500_btemp_get_ext_psy_data); 9078c0984e5SSebastian Reichel } 9088c0984e5SSebastian Reichel 9098c0984e5SSebastian Reichel /* ab8500 btemp driver interrupts and their respective isr */ 9108c0984e5SSebastian Reichel static struct ab8500_btemp_interrupts ab8500_btemp_irq[] = { 9118c0984e5SSebastian Reichel {"BAT_CTRL_INDB", ab8500_btemp_batctrlindb_handler}, 9128c0984e5SSebastian Reichel {"BTEMP_LOW", ab8500_btemp_templow_handler}, 9138c0984e5SSebastian Reichel {"BTEMP_HIGH", ab8500_btemp_temphigh_handler}, 9148c0984e5SSebastian Reichel {"BTEMP_LOW_MEDIUM", ab8500_btemp_lowmed_handler}, 9158c0984e5SSebastian Reichel {"BTEMP_MEDIUM_HIGH", ab8500_btemp_medhigh_handler}, 9168c0984e5SSebastian Reichel }; 9178c0984e5SSebastian Reichel 918f8efa0a8SLinus Walleij static int __maybe_unused ab8500_btemp_resume(struct device *dev) 9198c0984e5SSebastian Reichel { 920f8efa0a8SLinus Walleij struct ab8500_btemp *di = dev_get_drvdata(dev); 9218c0984e5SSebastian Reichel 9228c0984e5SSebastian Reichel ab8500_btemp_periodic(di, true); 9238c0984e5SSebastian Reichel 9248c0984e5SSebastian Reichel return 0; 9258c0984e5SSebastian Reichel } 9268c0984e5SSebastian Reichel 927f8efa0a8SLinus Walleij static int __maybe_unused ab8500_btemp_suspend(struct device *dev) 9288c0984e5SSebastian Reichel { 929f8efa0a8SLinus Walleij struct ab8500_btemp *di = dev_get_drvdata(dev); 9308c0984e5SSebastian Reichel 9318c0984e5SSebastian Reichel ab8500_btemp_periodic(di, false); 9328c0984e5SSebastian Reichel 9338c0984e5SSebastian Reichel return 0; 9348c0984e5SSebastian Reichel } 9358c0984e5SSebastian Reichel 9368c0984e5SSebastian Reichel static char *supply_interface[] = { 9378c0984e5SSebastian Reichel "ab8500_chargalg", 9388c0984e5SSebastian Reichel "ab8500_fg", 9398c0984e5SSebastian Reichel }; 9408c0984e5SSebastian Reichel 9418c0984e5SSebastian Reichel static const struct power_supply_desc ab8500_btemp_desc = { 9428c0984e5SSebastian Reichel .name = "ab8500_btemp", 9438c0984e5SSebastian Reichel .type = POWER_SUPPLY_TYPE_BATTERY, 9448c0984e5SSebastian Reichel .properties = ab8500_btemp_props, 9458c0984e5SSebastian Reichel .num_properties = ARRAY_SIZE(ab8500_btemp_props), 9468c0984e5SSebastian Reichel .get_property = ab8500_btemp_get_property, 9478c0984e5SSebastian Reichel .external_power_changed = ab8500_btemp_external_power_changed, 9488c0984e5SSebastian Reichel }; 9498c0984e5SSebastian Reichel 9501c1f13a0SLinus Walleij static int ab8500_btemp_bind(struct device *dev, struct device *master, 9511c1f13a0SLinus Walleij void *data) 9521c1f13a0SLinus Walleij { 9531c1f13a0SLinus Walleij struct ab8500_btemp *di = dev_get_drvdata(dev); 9541c1f13a0SLinus Walleij 9551c1f13a0SLinus Walleij /* Create a work queue for the btemp */ 9561c1f13a0SLinus Walleij di->btemp_wq = 9571c1f13a0SLinus Walleij alloc_workqueue("ab8500_btemp_wq", WQ_MEM_RECLAIM, 0); 9581c1f13a0SLinus Walleij if (di->btemp_wq == NULL) { 9591c1f13a0SLinus Walleij dev_err(dev, "failed to create work queue\n"); 9601c1f13a0SLinus Walleij return -ENOMEM; 9611c1f13a0SLinus Walleij } 9621c1f13a0SLinus Walleij 9631c1f13a0SLinus Walleij /* Kick off periodic temperature measurements */ 9641c1f13a0SLinus Walleij ab8500_btemp_periodic(di, true); 9651c1f13a0SLinus Walleij 9661c1f13a0SLinus Walleij return 0; 9671c1f13a0SLinus Walleij } 9681c1f13a0SLinus Walleij 9691c1f13a0SLinus Walleij static void ab8500_btemp_unbind(struct device *dev, struct device *master, 9701c1f13a0SLinus Walleij void *data) 9711c1f13a0SLinus Walleij { 9721c1f13a0SLinus Walleij struct ab8500_btemp *di = dev_get_drvdata(dev); 9731c1f13a0SLinus Walleij 9741c1f13a0SLinus Walleij /* Delete the work queue */ 9751c1f13a0SLinus Walleij destroy_workqueue(di->btemp_wq); 9761c1f13a0SLinus Walleij flush_scheduled_work(); 9771c1f13a0SLinus Walleij } 9781c1f13a0SLinus Walleij 9791c1f13a0SLinus Walleij static const struct component_ops ab8500_btemp_component_ops = { 9801c1f13a0SLinus Walleij .bind = ab8500_btemp_bind, 9811c1f13a0SLinus Walleij .unbind = ab8500_btemp_unbind, 9821c1f13a0SLinus Walleij }; 9831c1f13a0SLinus Walleij 9848c0984e5SSebastian Reichel static int ab8500_btemp_probe(struct platform_device *pdev) 9858c0984e5SSebastian Reichel { 9868c0984e5SSebastian Reichel struct power_supply_config psy_cfg = {}; 987ad89cb5fSLinus Walleij struct device *dev = &pdev->dev; 9888c0984e5SSebastian Reichel struct ab8500_btemp *di; 9898c0984e5SSebastian Reichel int irq, i, ret = 0; 9908c0984e5SSebastian Reichel u8 val; 9918c0984e5SSebastian Reichel 992ad89cb5fSLinus Walleij di = devm_kzalloc(dev, sizeof(*di), GFP_KERNEL); 993ad89cb5fSLinus Walleij if (!di) 9948c0984e5SSebastian Reichel return -ENOMEM; 9958c0984e5SSebastian Reichel 996417c0fc2SLinus Walleij di->bm = &ab8500_bm_data; 9978c0984e5SSebastian Reichel 9988c0984e5SSebastian Reichel /* get parent data */ 999ad89cb5fSLinus Walleij di->dev = dev; 10008c0984e5SSebastian Reichel di->parent = dev_get_drvdata(pdev->dev.parent); 10010a8686e3SLinus Walleij 10020a8686e3SLinus Walleij /* Get ADC channels */ 1003ad89cb5fSLinus Walleij di->btemp_ball = devm_iio_channel_get(dev, "btemp_ball"); 10040a8686e3SLinus Walleij if (IS_ERR(di->btemp_ball)) { 100536f1de0dSLinus Walleij ret = dev_err_probe(dev, PTR_ERR(di->btemp_ball), 100636f1de0dSLinus Walleij "failed to get BTEMP BALL ADC channel\n"); 100736f1de0dSLinus Walleij return ret; 10080a8686e3SLinus Walleij } 1009ad89cb5fSLinus Walleij di->bat_ctrl = devm_iio_channel_get(dev, "bat_ctrl"); 10100a8686e3SLinus Walleij if (IS_ERR(di->bat_ctrl)) { 101136f1de0dSLinus Walleij ret = dev_err_probe(dev, PTR_ERR(di->bat_ctrl), 101236f1de0dSLinus Walleij "failed to get BAT CTRL ADC channel\n"); 101336f1de0dSLinus Walleij return ret; 10140a8686e3SLinus Walleij } 10158c0984e5SSebastian Reichel 10168c0984e5SSebastian Reichel di->initialized = false; 10178c0984e5SSebastian Reichel 10188c0984e5SSebastian Reichel psy_cfg.supplied_to = supply_interface; 10198c0984e5SSebastian Reichel psy_cfg.num_supplicants = ARRAY_SIZE(supply_interface); 10208c0984e5SSebastian Reichel psy_cfg.drv_data = di; 10218c0984e5SSebastian Reichel 10228c0984e5SSebastian Reichel /* Init work for measuring temperature periodically */ 10238c0984e5SSebastian Reichel INIT_DEFERRABLE_WORK(&di->btemp_periodic_work, 10248c0984e5SSebastian Reichel ab8500_btemp_periodic_work); 10258c0984e5SSebastian Reichel 10268c0984e5SSebastian Reichel /* Set BTEMP thermal limits. Low and Med are fixed */ 10278c0984e5SSebastian Reichel di->btemp_ranges.btemp_low_limit = BTEMP_THERMAL_LOW_LIMIT; 10288c0984e5SSebastian Reichel di->btemp_ranges.btemp_med_limit = BTEMP_THERMAL_MED_LIMIT; 10298c0984e5SSebastian Reichel 1030ad89cb5fSLinus Walleij ret = abx500_get_register_interruptible(dev, AB8500_CHARGER, 10318c0984e5SSebastian Reichel AB8500_BTEMP_HIGH_TH, &val); 10328c0984e5SSebastian Reichel if (ret < 0) { 1033ad89cb5fSLinus Walleij dev_err(dev, "%s ab8500 read failed\n", __func__); 10341c1f13a0SLinus Walleij return ret; 10358c0984e5SSebastian Reichel } 10368c0984e5SSebastian Reichel switch (val) { 10378c0984e5SSebastian Reichel case BTEMP_HIGH_TH_57_0: 10388c0984e5SSebastian Reichel case BTEMP_HIGH_TH_57_1: 10398c0984e5SSebastian Reichel di->btemp_ranges.btemp_high_limit = 10408c0984e5SSebastian Reichel BTEMP_THERMAL_HIGH_LIMIT_57; 10418c0984e5SSebastian Reichel break; 10428c0984e5SSebastian Reichel case BTEMP_HIGH_TH_52: 10438c0984e5SSebastian Reichel di->btemp_ranges.btemp_high_limit = 10448c0984e5SSebastian Reichel BTEMP_THERMAL_HIGH_LIMIT_52; 10458c0984e5SSebastian Reichel break; 10468c0984e5SSebastian Reichel case BTEMP_HIGH_TH_62: 10478c0984e5SSebastian Reichel di->btemp_ranges.btemp_high_limit = 10488c0984e5SSebastian Reichel BTEMP_THERMAL_HIGH_LIMIT_62; 10498c0984e5SSebastian Reichel break; 10508c0984e5SSebastian Reichel } 10518c0984e5SSebastian Reichel 10528c0984e5SSebastian Reichel /* Register BTEMP power supply class */ 10531c1f13a0SLinus Walleij di->btemp_psy = devm_power_supply_register(dev, &ab8500_btemp_desc, 10548c0984e5SSebastian Reichel &psy_cfg); 10558c0984e5SSebastian Reichel if (IS_ERR(di->btemp_psy)) { 1056ad89cb5fSLinus Walleij dev_err(dev, "failed to register BTEMP psy\n"); 10571c1f13a0SLinus Walleij return PTR_ERR(di->btemp_psy); 10588c0984e5SSebastian Reichel } 10598c0984e5SSebastian Reichel 10608c0984e5SSebastian Reichel /* Register interrupts */ 10618c0984e5SSebastian Reichel for (i = 0; i < ARRAY_SIZE(ab8500_btemp_irq); i++) { 10628c0984e5SSebastian Reichel irq = platform_get_irq_byname(pdev, ab8500_btemp_irq[i].name); 10631c1f13a0SLinus Walleij if (irq < 0) 10641c1f13a0SLinus Walleij return irq; 1065b10e9700SKrzysztof Kozlowski 10661c1f13a0SLinus Walleij ret = devm_request_threaded_irq(dev, irq, NULL, 10671c1f13a0SLinus Walleij ab8500_btemp_irq[i].isr, 1068df12470cSTian Tao IRQF_SHARED | IRQF_NO_SUSPEND | IRQF_ONESHOT, 10698c0984e5SSebastian Reichel ab8500_btemp_irq[i].name, di); 10708c0984e5SSebastian Reichel 10718c0984e5SSebastian Reichel if (ret) { 1072ad89cb5fSLinus Walleij dev_err(dev, "failed to request %s IRQ %d: %d\n" 10738c0984e5SSebastian Reichel , ab8500_btemp_irq[i].name, irq, ret); 10741c1f13a0SLinus Walleij return ret; 10758c0984e5SSebastian Reichel } 1076ad89cb5fSLinus Walleij dev_dbg(dev, "Requested %s IRQ %d: %d\n", 10778c0984e5SSebastian Reichel ab8500_btemp_irq[i].name, irq, ret); 10788c0984e5SSebastian Reichel } 10798c0984e5SSebastian Reichel 10808c0984e5SSebastian Reichel platform_set_drvdata(pdev, di); 10818c0984e5SSebastian Reichel 10828c0984e5SSebastian Reichel list_add_tail(&di->node, &ab8500_btemp_list); 10838c0984e5SSebastian Reichel 10841c1f13a0SLinus Walleij return component_add(dev, &ab8500_btemp_component_ops); 10858c0984e5SSebastian Reichel } 1086ccc023a5SKrzysztof Kozlowski 10871c1f13a0SLinus Walleij static int ab8500_btemp_remove(struct platform_device *pdev) 10881c1f13a0SLinus Walleij { 10891c1f13a0SLinus Walleij component_del(&pdev->dev, &ab8500_btemp_component_ops); 10901c1f13a0SLinus Walleij 10911c1f13a0SLinus Walleij return 0; 10928c0984e5SSebastian Reichel } 10938c0984e5SSebastian Reichel 1094f8efa0a8SLinus Walleij static SIMPLE_DEV_PM_OPS(ab8500_btemp_pm_ops, ab8500_btemp_suspend, ab8500_btemp_resume); 1095f8efa0a8SLinus Walleij 10968c0984e5SSebastian Reichel static const struct of_device_id ab8500_btemp_match[] = { 10978c0984e5SSebastian Reichel { .compatible = "stericsson,ab8500-btemp", }, 10988c0984e5SSebastian Reichel { }, 10998c0984e5SSebastian Reichel }; 1100*dfe52db1SZou Wei MODULE_DEVICE_TABLE(of, ab8500_btemp_match); 11018c0984e5SSebastian Reichel 11021c1f13a0SLinus Walleij struct platform_driver ab8500_btemp_driver = { 11038c0984e5SSebastian Reichel .probe = ab8500_btemp_probe, 11048c0984e5SSebastian Reichel .remove = ab8500_btemp_remove, 11058c0984e5SSebastian Reichel .driver = { 11068c0984e5SSebastian Reichel .name = "ab8500-btemp", 11078c0984e5SSebastian Reichel .of_match_table = ab8500_btemp_match, 1108f8efa0a8SLinus Walleij .pm = &ab8500_btemp_pm_ops, 11098c0984e5SSebastian Reichel }, 11108c0984e5SSebastian Reichel }; 11118c0984e5SSebastian Reichel MODULE_LICENSE("GPL v2"); 11128c0984e5SSebastian Reichel MODULE_AUTHOR("Johan Palsson, Karl Komierowski, Arun R Murthy"); 11138c0984e5SSebastian Reichel MODULE_ALIAS("platform:ab8500-btemp"); 11148c0984e5SSebastian Reichel MODULE_DESCRIPTION("AB8500 battery temperature driver"); 1115