1*dbc4dedaSKarl-Heinz Schneider /* 2*dbc4dedaSKarl-Heinz Schneider * Driver for SBS compliant Smart Battery System Managers 3*dbc4dedaSKarl-Heinz Schneider * 4*dbc4dedaSKarl-Heinz Schneider * The device communicates via i2c at address 0x0a and multiplexes access to up 5*dbc4dedaSKarl-Heinz Schneider * to four smart batteries at address 0x0b. 6*dbc4dedaSKarl-Heinz Schneider * 7*dbc4dedaSKarl-Heinz Schneider * Via sysfs interface the online state and charge type are presented. 8*dbc4dedaSKarl-Heinz Schneider * 9*dbc4dedaSKarl-Heinz Schneider * Datasheet SBSM: http://sbs-forum.org/specs/sbsm100b.pdf 10*dbc4dedaSKarl-Heinz Schneider * Datasheet LTC1760: http://cds.linear.com/docs/en/datasheet/1760fb.pdf 11*dbc4dedaSKarl-Heinz Schneider * 12*dbc4dedaSKarl-Heinz Schneider * Karl-Heinz Schneider <karl-heinz@schneider-inet.de> 13*dbc4dedaSKarl-Heinz Schneider * 14*dbc4dedaSKarl-Heinz Schneider * This program is free software; you can redistribute it and/or modify 15*dbc4dedaSKarl-Heinz Schneider * it under the terms of the GNU General Public License version 2 as 16*dbc4dedaSKarl-Heinz Schneider * published by the Free Software Foundation. 17*dbc4dedaSKarl-Heinz Schneider */ 18*dbc4dedaSKarl-Heinz Schneider 19*dbc4dedaSKarl-Heinz Schneider #include <linux/module.h> 20*dbc4dedaSKarl-Heinz Schneider #include <linux/i2c.h> 21*dbc4dedaSKarl-Heinz Schneider #include <linux/i2c-mux.h> 22*dbc4dedaSKarl-Heinz Schneider #include <linux/power_supply.h> 23*dbc4dedaSKarl-Heinz Schneider 24*dbc4dedaSKarl-Heinz Schneider #define SBSM_MAX_BATS 4 25*dbc4dedaSKarl-Heinz Schneider #define SBSM_RETRY_CNT 3 26*dbc4dedaSKarl-Heinz Schneider 27*dbc4dedaSKarl-Heinz Schneider /* registers addresses */ 28*dbc4dedaSKarl-Heinz Schneider #define SBSM_CMD_BATSYSSTATE 0x01 29*dbc4dedaSKarl-Heinz Schneider #define SBSM_CMD_BATSYSSTATECONT 0x02 30*dbc4dedaSKarl-Heinz Schneider #define SBSM_CMD_BATSYSINFO 0x04 31*dbc4dedaSKarl-Heinz Schneider #define SBSM_CMD_LTC 0x3c 32*dbc4dedaSKarl-Heinz Schneider 33*dbc4dedaSKarl-Heinz Schneider #define SBSM_MASK_BAT_SUPPORTED GENMASK(3, 0) 34*dbc4dedaSKarl-Heinz Schneider #define SBSM_MASK_CHARGE_BAT GENMASK(7, 4) 35*dbc4dedaSKarl-Heinz Schneider #define SBSM_BIT_AC_PRESENT BIT(0) 36*dbc4dedaSKarl-Heinz Schneider #define SBSM_BIT_TURBO BIT(7) 37*dbc4dedaSKarl-Heinz Schneider 38*dbc4dedaSKarl-Heinz Schneider #define SBSM_SMB_BAT_OFFSET 11 39*dbc4dedaSKarl-Heinz Schneider struct sbsm_data { 40*dbc4dedaSKarl-Heinz Schneider struct i2c_client *client; 41*dbc4dedaSKarl-Heinz Schneider struct i2c_mux_core *muxc; 42*dbc4dedaSKarl-Heinz Schneider 43*dbc4dedaSKarl-Heinz Schneider struct power_supply *psy; 44*dbc4dedaSKarl-Heinz Schneider 45*dbc4dedaSKarl-Heinz Schneider u8 cur_chan; /* currently selected channel */ 46*dbc4dedaSKarl-Heinz Schneider bool is_ltc1760; /* special capabilities */ 47*dbc4dedaSKarl-Heinz Schneider }; 48*dbc4dedaSKarl-Heinz Schneider 49*dbc4dedaSKarl-Heinz Schneider static enum power_supply_property sbsm_props[] = { 50*dbc4dedaSKarl-Heinz Schneider POWER_SUPPLY_PROP_ONLINE, 51*dbc4dedaSKarl-Heinz Schneider POWER_SUPPLY_PROP_CHARGE_TYPE, 52*dbc4dedaSKarl-Heinz Schneider }; 53*dbc4dedaSKarl-Heinz Schneider 54*dbc4dedaSKarl-Heinz Schneider static int sbsm_read_word(struct i2c_client *client, u8 address) 55*dbc4dedaSKarl-Heinz Schneider { 56*dbc4dedaSKarl-Heinz Schneider int reg, retries; 57*dbc4dedaSKarl-Heinz Schneider 58*dbc4dedaSKarl-Heinz Schneider for (retries = SBSM_RETRY_CNT; retries > 0; retries--) { 59*dbc4dedaSKarl-Heinz Schneider reg = i2c_smbus_read_word_data(client, address); 60*dbc4dedaSKarl-Heinz Schneider if (reg >= 0) 61*dbc4dedaSKarl-Heinz Schneider break; 62*dbc4dedaSKarl-Heinz Schneider } 63*dbc4dedaSKarl-Heinz Schneider 64*dbc4dedaSKarl-Heinz Schneider if (reg < 0) { 65*dbc4dedaSKarl-Heinz Schneider dev_err(&client->dev, "failed to read register 0x%02x\n", 66*dbc4dedaSKarl-Heinz Schneider address); 67*dbc4dedaSKarl-Heinz Schneider } 68*dbc4dedaSKarl-Heinz Schneider 69*dbc4dedaSKarl-Heinz Schneider return reg; 70*dbc4dedaSKarl-Heinz Schneider } 71*dbc4dedaSKarl-Heinz Schneider 72*dbc4dedaSKarl-Heinz Schneider static int sbsm_write_word(struct i2c_client *client, u8 address, u16 word) 73*dbc4dedaSKarl-Heinz Schneider { 74*dbc4dedaSKarl-Heinz Schneider int ret, retries; 75*dbc4dedaSKarl-Heinz Schneider 76*dbc4dedaSKarl-Heinz Schneider for (retries = SBSM_RETRY_CNT; retries > 0; retries--) { 77*dbc4dedaSKarl-Heinz Schneider ret = i2c_smbus_write_word_data(client, address, word); 78*dbc4dedaSKarl-Heinz Schneider if (ret >= 0) 79*dbc4dedaSKarl-Heinz Schneider break; 80*dbc4dedaSKarl-Heinz Schneider } 81*dbc4dedaSKarl-Heinz Schneider if (ret < 0) 82*dbc4dedaSKarl-Heinz Schneider dev_err(&client->dev, "failed to write to register 0x%02x\n", 83*dbc4dedaSKarl-Heinz Schneider address); 84*dbc4dedaSKarl-Heinz Schneider 85*dbc4dedaSKarl-Heinz Schneider return ret; 86*dbc4dedaSKarl-Heinz Schneider } 87*dbc4dedaSKarl-Heinz Schneider 88*dbc4dedaSKarl-Heinz Schneider static int sbsm_get_property(struct power_supply *psy, 89*dbc4dedaSKarl-Heinz Schneider enum power_supply_property psp, 90*dbc4dedaSKarl-Heinz Schneider union power_supply_propval *val) 91*dbc4dedaSKarl-Heinz Schneider { 92*dbc4dedaSKarl-Heinz Schneider struct sbsm_data *data = power_supply_get_drvdata(psy); 93*dbc4dedaSKarl-Heinz Schneider int regval = 0; 94*dbc4dedaSKarl-Heinz Schneider 95*dbc4dedaSKarl-Heinz Schneider switch (psp) { 96*dbc4dedaSKarl-Heinz Schneider case POWER_SUPPLY_PROP_ONLINE: 97*dbc4dedaSKarl-Heinz Schneider regval = sbsm_read_word(data->client, SBSM_CMD_BATSYSSTATECONT); 98*dbc4dedaSKarl-Heinz Schneider if (regval < 0) 99*dbc4dedaSKarl-Heinz Schneider return regval; 100*dbc4dedaSKarl-Heinz Schneider val->intval = !!(regval & SBSM_BIT_AC_PRESENT); 101*dbc4dedaSKarl-Heinz Schneider break; 102*dbc4dedaSKarl-Heinz Schneider 103*dbc4dedaSKarl-Heinz Schneider case POWER_SUPPLY_PROP_CHARGE_TYPE: 104*dbc4dedaSKarl-Heinz Schneider regval = sbsm_read_word(data->client, SBSM_CMD_BATSYSSTATE); 105*dbc4dedaSKarl-Heinz Schneider if (regval < 0) 106*dbc4dedaSKarl-Heinz Schneider return regval; 107*dbc4dedaSKarl-Heinz Schneider 108*dbc4dedaSKarl-Heinz Schneider if ((regval & SBSM_MASK_CHARGE_BAT) == 0) { 109*dbc4dedaSKarl-Heinz Schneider val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE; 110*dbc4dedaSKarl-Heinz Schneider return 0; 111*dbc4dedaSKarl-Heinz Schneider } 112*dbc4dedaSKarl-Heinz Schneider val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE; 113*dbc4dedaSKarl-Heinz Schneider 114*dbc4dedaSKarl-Heinz Schneider if (data->is_ltc1760) { 115*dbc4dedaSKarl-Heinz Schneider /* charge mode fast if turbo is active */ 116*dbc4dedaSKarl-Heinz Schneider regval = sbsm_read_word(data->client, SBSM_CMD_LTC); 117*dbc4dedaSKarl-Heinz Schneider if (regval < 0) 118*dbc4dedaSKarl-Heinz Schneider return regval; 119*dbc4dedaSKarl-Heinz Schneider else if (regval & SBSM_BIT_TURBO) 120*dbc4dedaSKarl-Heinz Schneider val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST; 121*dbc4dedaSKarl-Heinz Schneider } 122*dbc4dedaSKarl-Heinz Schneider break; 123*dbc4dedaSKarl-Heinz Schneider 124*dbc4dedaSKarl-Heinz Schneider default: 125*dbc4dedaSKarl-Heinz Schneider return -EINVAL; 126*dbc4dedaSKarl-Heinz Schneider } 127*dbc4dedaSKarl-Heinz Schneider 128*dbc4dedaSKarl-Heinz Schneider return 0; 129*dbc4dedaSKarl-Heinz Schneider } 130*dbc4dedaSKarl-Heinz Schneider 131*dbc4dedaSKarl-Heinz Schneider static int sbsm_prop_is_writeable(struct power_supply *psy, 132*dbc4dedaSKarl-Heinz Schneider enum power_supply_property psp) 133*dbc4dedaSKarl-Heinz Schneider { 134*dbc4dedaSKarl-Heinz Schneider struct sbsm_data *data = power_supply_get_drvdata(psy); 135*dbc4dedaSKarl-Heinz Schneider 136*dbc4dedaSKarl-Heinz Schneider return (psp == POWER_SUPPLY_PROP_CHARGE_TYPE) && data->is_ltc1760; 137*dbc4dedaSKarl-Heinz Schneider } 138*dbc4dedaSKarl-Heinz Schneider 139*dbc4dedaSKarl-Heinz Schneider static int sbsm_set_property(struct power_supply *psy, 140*dbc4dedaSKarl-Heinz Schneider enum power_supply_property psp, 141*dbc4dedaSKarl-Heinz Schneider const union power_supply_propval *val) 142*dbc4dedaSKarl-Heinz Schneider { 143*dbc4dedaSKarl-Heinz Schneider struct sbsm_data *data = power_supply_get_drvdata(psy); 144*dbc4dedaSKarl-Heinz Schneider int ret = -EINVAL; 145*dbc4dedaSKarl-Heinz Schneider u16 regval; 146*dbc4dedaSKarl-Heinz Schneider 147*dbc4dedaSKarl-Heinz Schneider switch (psp) { 148*dbc4dedaSKarl-Heinz Schneider case POWER_SUPPLY_PROP_CHARGE_TYPE: 149*dbc4dedaSKarl-Heinz Schneider /* write 1 to TURBO if type fast is given */ 150*dbc4dedaSKarl-Heinz Schneider if (!data->is_ltc1760) 151*dbc4dedaSKarl-Heinz Schneider break; 152*dbc4dedaSKarl-Heinz Schneider regval = val->intval == 153*dbc4dedaSKarl-Heinz Schneider POWER_SUPPLY_CHARGE_TYPE_FAST ? SBSM_BIT_TURBO : 0; 154*dbc4dedaSKarl-Heinz Schneider ret = sbsm_write_word(data->client, SBSM_CMD_LTC, regval); 155*dbc4dedaSKarl-Heinz Schneider break; 156*dbc4dedaSKarl-Heinz Schneider 157*dbc4dedaSKarl-Heinz Schneider default: 158*dbc4dedaSKarl-Heinz Schneider break; 159*dbc4dedaSKarl-Heinz Schneider } 160*dbc4dedaSKarl-Heinz Schneider 161*dbc4dedaSKarl-Heinz Schneider return ret; 162*dbc4dedaSKarl-Heinz Schneider } 163*dbc4dedaSKarl-Heinz Schneider 164*dbc4dedaSKarl-Heinz Schneider /* 165*dbc4dedaSKarl-Heinz Schneider * Switch to battery 166*dbc4dedaSKarl-Heinz Schneider * Parameter chan is directly the content of SMB_BAT* nibble 167*dbc4dedaSKarl-Heinz Schneider */ 168*dbc4dedaSKarl-Heinz Schneider static int sbsm_select(struct i2c_mux_core *muxc, u32 chan) 169*dbc4dedaSKarl-Heinz Schneider { 170*dbc4dedaSKarl-Heinz Schneider struct sbsm_data *data = i2c_mux_priv(muxc); 171*dbc4dedaSKarl-Heinz Schneider struct device *dev = &data->client->dev; 172*dbc4dedaSKarl-Heinz Schneider int ret = 0; 173*dbc4dedaSKarl-Heinz Schneider u16 reg; 174*dbc4dedaSKarl-Heinz Schneider 175*dbc4dedaSKarl-Heinz Schneider if (data->cur_chan == chan) 176*dbc4dedaSKarl-Heinz Schneider return ret; 177*dbc4dedaSKarl-Heinz Schneider 178*dbc4dedaSKarl-Heinz Schneider /* chan goes from 1 ... 4 */ 179*dbc4dedaSKarl-Heinz Schneider reg = 1 << BIT(SBSM_SMB_BAT_OFFSET + chan); 180*dbc4dedaSKarl-Heinz Schneider ret = sbsm_write_word(data->client, SBSM_CMD_BATSYSSTATE, reg); 181*dbc4dedaSKarl-Heinz Schneider if (ret) 182*dbc4dedaSKarl-Heinz Schneider dev_err(dev, "Failed to select channel %i\n", chan); 183*dbc4dedaSKarl-Heinz Schneider else 184*dbc4dedaSKarl-Heinz Schneider data->cur_chan = chan; 185*dbc4dedaSKarl-Heinz Schneider 186*dbc4dedaSKarl-Heinz Schneider return ret; 187*dbc4dedaSKarl-Heinz Schneider } 188*dbc4dedaSKarl-Heinz Schneider 189*dbc4dedaSKarl-Heinz Schneider static const struct power_supply_desc sbsm_default_psy_desc = { 190*dbc4dedaSKarl-Heinz Schneider .type = POWER_SUPPLY_TYPE_MAINS, 191*dbc4dedaSKarl-Heinz Schneider .properties = sbsm_props, 192*dbc4dedaSKarl-Heinz Schneider .num_properties = ARRAY_SIZE(sbsm_props), 193*dbc4dedaSKarl-Heinz Schneider .get_property = &sbsm_get_property, 194*dbc4dedaSKarl-Heinz Schneider .set_property = &sbsm_set_property, 195*dbc4dedaSKarl-Heinz Schneider .property_is_writeable = &sbsm_prop_is_writeable, 196*dbc4dedaSKarl-Heinz Schneider }; 197*dbc4dedaSKarl-Heinz Schneider 198*dbc4dedaSKarl-Heinz Schneider static int sbsm_probe(struct i2c_client *client, 199*dbc4dedaSKarl-Heinz Schneider const struct i2c_device_id *id) 200*dbc4dedaSKarl-Heinz Schneider { 201*dbc4dedaSKarl-Heinz Schneider struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); 202*dbc4dedaSKarl-Heinz Schneider struct sbsm_data *data; 203*dbc4dedaSKarl-Heinz Schneider struct device *dev = &client->dev; 204*dbc4dedaSKarl-Heinz Schneider struct power_supply_desc *psy_desc; 205*dbc4dedaSKarl-Heinz Schneider struct power_supply_config psy_cfg = {}; 206*dbc4dedaSKarl-Heinz Schneider int ret = 0, i, supported_bats; 207*dbc4dedaSKarl-Heinz Schneider 208*dbc4dedaSKarl-Heinz Schneider /* Device listens only at address 0x0a */ 209*dbc4dedaSKarl-Heinz Schneider if (client->addr != 0x0a) 210*dbc4dedaSKarl-Heinz Schneider return -EINVAL; 211*dbc4dedaSKarl-Heinz Schneider 212*dbc4dedaSKarl-Heinz Schneider if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) 213*dbc4dedaSKarl-Heinz Schneider return -EPFNOSUPPORT; 214*dbc4dedaSKarl-Heinz Schneider 215*dbc4dedaSKarl-Heinz Schneider data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); 216*dbc4dedaSKarl-Heinz Schneider if (!data) 217*dbc4dedaSKarl-Heinz Schneider return -ENOMEM; 218*dbc4dedaSKarl-Heinz Schneider 219*dbc4dedaSKarl-Heinz Schneider i2c_set_clientdata(client, data); 220*dbc4dedaSKarl-Heinz Schneider 221*dbc4dedaSKarl-Heinz Schneider data->client = client; 222*dbc4dedaSKarl-Heinz Schneider data->is_ltc1760 = !!strstr(id->name, "ltc1760"); 223*dbc4dedaSKarl-Heinz Schneider 224*dbc4dedaSKarl-Heinz Schneider ret = sbsm_read_word(client, SBSM_CMD_BATSYSINFO); 225*dbc4dedaSKarl-Heinz Schneider if (ret < 0) 226*dbc4dedaSKarl-Heinz Schneider return ret; 227*dbc4dedaSKarl-Heinz Schneider supported_bats = ret & SBSM_MASK_BAT_SUPPORTED; 228*dbc4dedaSKarl-Heinz Schneider 229*dbc4dedaSKarl-Heinz Schneider data->muxc = i2c_mux_alloc(adapter, dev, SBSM_MAX_BATS, 0, 230*dbc4dedaSKarl-Heinz Schneider I2C_MUX_LOCKED, &sbsm_select, NULL); 231*dbc4dedaSKarl-Heinz Schneider if (!data->muxc) { 232*dbc4dedaSKarl-Heinz Schneider dev_err(dev, "failed to alloc i2c mux\n"); 233*dbc4dedaSKarl-Heinz Schneider ret = -ENOMEM; 234*dbc4dedaSKarl-Heinz Schneider goto err_mux_alloc; 235*dbc4dedaSKarl-Heinz Schneider } 236*dbc4dedaSKarl-Heinz Schneider data->muxc->priv = data; 237*dbc4dedaSKarl-Heinz Schneider 238*dbc4dedaSKarl-Heinz Schneider /* register muxed i2c channels. One for each supported battery */ 239*dbc4dedaSKarl-Heinz Schneider for (i = 0; i < SBSM_MAX_BATS; ++i) { 240*dbc4dedaSKarl-Heinz Schneider if (supported_bats & BIT(i)) { 241*dbc4dedaSKarl-Heinz Schneider ret = i2c_mux_add_adapter(data->muxc, 0, i + 1, 0); 242*dbc4dedaSKarl-Heinz Schneider if (ret) 243*dbc4dedaSKarl-Heinz Schneider break; 244*dbc4dedaSKarl-Heinz Schneider } 245*dbc4dedaSKarl-Heinz Schneider } 246*dbc4dedaSKarl-Heinz Schneider if (ret) { 247*dbc4dedaSKarl-Heinz Schneider dev_err(dev, "failed to register i2c mux channel %d\n", i + 1); 248*dbc4dedaSKarl-Heinz Schneider goto err_mux_register; 249*dbc4dedaSKarl-Heinz Schneider } 250*dbc4dedaSKarl-Heinz Schneider 251*dbc4dedaSKarl-Heinz Schneider psy_desc = devm_kmemdup(dev, &sbsm_default_psy_desc, 252*dbc4dedaSKarl-Heinz Schneider sizeof(struct power_supply_desc), 253*dbc4dedaSKarl-Heinz Schneider GFP_KERNEL); 254*dbc4dedaSKarl-Heinz Schneider if (!psy_desc) { 255*dbc4dedaSKarl-Heinz Schneider ret = -ENOMEM; 256*dbc4dedaSKarl-Heinz Schneider goto err_psy; 257*dbc4dedaSKarl-Heinz Schneider } 258*dbc4dedaSKarl-Heinz Schneider 259*dbc4dedaSKarl-Heinz Schneider psy_desc->name = devm_kasprintf(dev, GFP_KERNEL, "sbsm-%s", 260*dbc4dedaSKarl-Heinz Schneider dev_name(&client->dev)); 261*dbc4dedaSKarl-Heinz Schneider if (!psy_desc->name) { 262*dbc4dedaSKarl-Heinz Schneider ret = -ENOMEM; 263*dbc4dedaSKarl-Heinz Schneider goto err_psy; 264*dbc4dedaSKarl-Heinz Schneider } 265*dbc4dedaSKarl-Heinz Schneider 266*dbc4dedaSKarl-Heinz Schneider psy_cfg.drv_data = data; 267*dbc4dedaSKarl-Heinz Schneider psy_cfg.of_node = dev->of_node; 268*dbc4dedaSKarl-Heinz Schneider data->psy = devm_power_supply_register(dev, psy_desc, &psy_cfg); 269*dbc4dedaSKarl-Heinz Schneider if (IS_ERR(data->psy)) { 270*dbc4dedaSKarl-Heinz Schneider ret = PTR_ERR(data->psy); 271*dbc4dedaSKarl-Heinz Schneider dev_err(dev, "failed to register power supply %s\n", 272*dbc4dedaSKarl-Heinz Schneider psy_desc->name); 273*dbc4dedaSKarl-Heinz Schneider goto err_psy; 274*dbc4dedaSKarl-Heinz Schneider } 275*dbc4dedaSKarl-Heinz Schneider 276*dbc4dedaSKarl-Heinz Schneider return 0; 277*dbc4dedaSKarl-Heinz Schneider 278*dbc4dedaSKarl-Heinz Schneider err_psy: 279*dbc4dedaSKarl-Heinz Schneider err_mux_register: 280*dbc4dedaSKarl-Heinz Schneider i2c_mux_del_adapters(data->muxc); 281*dbc4dedaSKarl-Heinz Schneider 282*dbc4dedaSKarl-Heinz Schneider err_mux_alloc: 283*dbc4dedaSKarl-Heinz Schneider return ret; 284*dbc4dedaSKarl-Heinz Schneider } 285*dbc4dedaSKarl-Heinz Schneider 286*dbc4dedaSKarl-Heinz Schneider static int sbsm_remove(struct i2c_client *client) 287*dbc4dedaSKarl-Heinz Schneider { 288*dbc4dedaSKarl-Heinz Schneider struct sbsm_data *data = i2c_get_clientdata(client); 289*dbc4dedaSKarl-Heinz Schneider 290*dbc4dedaSKarl-Heinz Schneider i2c_mux_del_adapters(data->muxc); 291*dbc4dedaSKarl-Heinz Schneider return 0; 292*dbc4dedaSKarl-Heinz Schneider } 293*dbc4dedaSKarl-Heinz Schneider 294*dbc4dedaSKarl-Heinz Schneider static const struct i2c_device_id sbsm_ids[] = { 295*dbc4dedaSKarl-Heinz Schneider { "sbs-manager", 0 }, 296*dbc4dedaSKarl-Heinz Schneider { "ltc1760", 0 }, 297*dbc4dedaSKarl-Heinz Schneider { } 298*dbc4dedaSKarl-Heinz Schneider }; 299*dbc4dedaSKarl-Heinz Schneider MODULE_DEVICE_TABLE(i2c, sbsm_ids); 300*dbc4dedaSKarl-Heinz Schneider 301*dbc4dedaSKarl-Heinz Schneider #ifdef CONFIG_OF 302*dbc4dedaSKarl-Heinz Schneider static const struct of_device_id sbsm_dt_ids[] = { 303*dbc4dedaSKarl-Heinz Schneider { .compatible = "sbs,sbs-manager" }, 304*dbc4dedaSKarl-Heinz Schneider { .compatible = "lltc,ltc1760" }, 305*dbc4dedaSKarl-Heinz Schneider { } 306*dbc4dedaSKarl-Heinz Schneider }; 307*dbc4dedaSKarl-Heinz Schneider MODULE_DEVICE_TABLE(of, sbsm_dt_ids); 308*dbc4dedaSKarl-Heinz Schneider #endif 309*dbc4dedaSKarl-Heinz Schneider 310*dbc4dedaSKarl-Heinz Schneider static struct i2c_driver sbsm_driver = { 311*dbc4dedaSKarl-Heinz Schneider .driver = { 312*dbc4dedaSKarl-Heinz Schneider .name = "sbsm", 313*dbc4dedaSKarl-Heinz Schneider .of_match_table = of_match_ptr(sbsm_dt_ids), 314*dbc4dedaSKarl-Heinz Schneider }, 315*dbc4dedaSKarl-Heinz Schneider .probe = sbsm_probe, 316*dbc4dedaSKarl-Heinz Schneider .remove = sbsm_remove, 317*dbc4dedaSKarl-Heinz Schneider .id_table = sbsm_ids 318*dbc4dedaSKarl-Heinz Schneider }; 319*dbc4dedaSKarl-Heinz Schneider module_i2c_driver(sbsm_driver); 320*dbc4dedaSKarl-Heinz Schneider 321*dbc4dedaSKarl-Heinz Schneider MODULE_LICENSE("GPL"); 322*dbc4dedaSKarl-Heinz Schneider MODULE_AUTHOR("Karl-Heinz Schneider <karl-heinz@schneider-inet.de>"); 323*dbc4dedaSKarl-Heinz Schneider MODULE_DESCRIPTION("SBSM Smart Battery System Manager"); 324