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alistair23-linux/drivers/power/ab8500_bmdata.c
Lee Jones 861a30da53 ab8500-bm: Add support for the new ab8540 platform 
Provide AB8540 platform specific information required to run the
Battery Management subsystem on AB8540 based devices. For this to
happen we see the introduction of separate platform specific data
structures and a means in which to process them.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
2013-03-07 12:35:48 +08:00

598 lines
16 KiB
C
Raw Blame History

#include <linux/export.h>
#include <linux/power_supply.h>
#include <linux/of.h>
#include <linux/mfd/abx500.h>
#include <linux/mfd/abx500/ab8500.h>
#include <linux/mfd/abx500/ab8500-bm.h>
/*
* These are the defined batteries that uses a NTC and ID resistor placed
* inside of the battery pack.
* Note that the res_to_temp table must be strictly sorted by falling resistance
* values to work.
*/
static struct abx500_res_to_temp temp_tbl_A_thermistor[] = {
{-5, 53407},
{ 0, 48594},
{ 5, 43804},
{10, 39188},
{15, 34870},
{20, 30933},
{25, 27422},
{30, 24347},
{35, 21694},
{40, 19431},
{45, 17517},
{50, 15908},
{55, 14561},
{60, 13437},
{65, 12500},
};
static struct abx500_res_to_temp temp_tbl_B_thermistor[] = {
{-5, 200000},
{ 0, 159024},
{ 5, 151921},
{10, 144300},
{15, 136424},
{20, 128565},
{25, 120978},
{30, 113875},
{35, 107397},
{40, 101629},
{45, 96592},
{50, 92253},
{55, 88569},
{60, 85461},
{65, 82869},
};
static struct abx500_v_to_cap cap_tbl_A_thermistor[] = {
{4171, 100},
{4114, 95},
{4009, 83},
{3947, 74},
{3907, 67},
{3863, 59},
{3830, 56},
{3813, 53},
{3791, 46},
{3771, 33},
{3754, 25},
{3735, 20},
{3717, 17},
{3681, 13},
{3664, 8},
{3651, 6},
{3635, 5},
{3560, 3},
{3408, 1},
{3247, 0},
};
static struct abx500_v_to_cap cap_tbl_B_thermistor[] = {
{4161, 100},
{4124, 98},
{4044, 90},
{4003, 85},
{3966, 80},
{3933, 75},
{3888, 67},
{3849, 60},
{3813, 55},
{3787, 47},
{3772, 30},
{3751, 25},
{3718, 20},
{3681, 16},
{3660, 14},
{3589, 10},
{3546, 7},
{3495, 4},
{3404, 2},
{3250, 0},
};
static struct abx500_v_to_cap cap_tbl[] = {
{4186, 100},
{4163, 99},
{4114, 95},
{4068, 90},
{3990, 80},
{3926, 70},
{3898, 65},
{3866, 60},
{3833, 55},
{3812, 50},
{3787, 40},
{3768, 30},
{3747, 25},
{3730, 20},
{3705, 15},
{3699, 14},
{3684, 12},
{3672, 9},
{3657, 7},
{3638, 6},
{3556, 4},
{3424, 2},
{3317, 1},
{3094, 0},
};
/*
* Note that the res_to_temp table must be strictly sorted by falling
* resistance values to work.
*/
static struct abx500_res_to_temp temp_tbl[] = {
{-5, 214834},
{ 0, 162943},
{ 5, 124820},
{10, 96520},
{15, 75306},
{20, 59254},
{25, 47000},
{30, 37566},
{35, 30245},
{40, 24520},
{45, 20010},
{50, 16432},
{55, 13576},
{60, 11280},
{65, 9425},
};
/*
* Note that the batres_vs_temp table must be strictly sorted by falling
* temperature values to work.
*/
static struct batres_vs_temp temp_to_batres_tbl_thermistor[] = {
{ 40, 120},
{ 30, 135},
{ 20, 165},
{ 10, 230},
{ 00, 325},
{-10, 445},
{-20, 595},
};
/*
* Note that the batres_vs_temp table must be strictly sorted by falling
* temperature values to work.
*/
static struct batres_vs_temp temp_to_batres_tbl_ext_thermistor[] = {
{ 60, 300},
{ 30, 300},
{ 20, 300},
{ 10, 300},
{ 00, 300},
{-10, 300},
{-20, 300},
};
/* battery resistance table for LI ION 9100 battery */
static struct batres_vs_temp temp_to_batres_tbl_9100[] = {
{ 60, 180},
{ 30, 180},
{ 20, 180},
{ 10, 180},
{ 00, 180},
{-10, 180},
{-20, 180},
};
static struct abx500_battery_type bat_type_thermistor[] = {
[BATTERY_UNKNOWN] = {
/* First element always represent the UNKNOWN battery */
.name = POWER_SUPPLY_TECHNOLOGY_UNKNOWN,
.resis_high = 0,
.resis_low = 0,
.battery_resistance = 300,
.charge_full_design = 612,
.nominal_voltage = 3700,
.termination_vol = 4050,
.termination_curr = 200,
.recharge_cap = 95,
.normal_cur_lvl = 400,
.normal_vol_lvl = 4100,
.maint_a_cur_lvl = 400,
.maint_a_vol_lvl = 4050,
.maint_a_chg_timer_h = 60,
.maint_b_cur_lvl = 400,
.maint_b_vol_lvl = 4000,
.maint_b_chg_timer_h = 200,
.low_high_cur_lvl = 300,
.low_high_vol_lvl = 4000,
.n_temp_tbl_elements = ARRAY_SIZE(temp_tbl),
.r_to_t_tbl = temp_tbl,
.n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl),
.v_to_cap_tbl = cap_tbl,
.n_batres_tbl_elements = ARRAY_SIZE(temp_to_batres_tbl_thermistor),
.batres_tbl = temp_to_batres_tbl_thermistor,
},
{
.name = POWER_SUPPLY_TECHNOLOGY_LIPO,
.resis_high = 53407,
.resis_low = 12500,
.battery_resistance = 300,
.charge_full_design = 900,
.nominal_voltage = 3600,
.termination_vol = 4150,
.termination_curr = 80,
.recharge_cap = 95,
.normal_cur_lvl = 700,
.normal_vol_lvl = 4200,
.maint_a_cur_lvl = 600,
.maint_a_vol_lvl = 4150,
.maint_a_chg_timer_h = 60,
.maint_b_cur_lvl = 600,
.maint_b_vol_lvl = 4100,
.maint_b_chg_timer_h = 200,
.low_high_cur_lvl = 300,
.low_high_vol_lvl = 4000,
.n_temp_tbl_elements = ARRAY_SIZE(temp_tbl_A_thermistor),
.r_to_t_tbl = temp_tbl_A_thermistor,
.n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl_A_thermistor),
.v_to_cap_tbl = cap_tbl_A_thermistor,
.n_batres_tbl_elements = ARRAY_SIZE(temp_to_batres_tbl_thermistor),
.batres_tbl = temp_to_batres_tbl_thermistor,
},
{
.name = POWER_SUPPLY_TECHNOLOGY_LIPO,
.resis_high = 200000,
.resis_low = 82869,
.battery_resistance = 300,
.charge_full_design = 900,
.nominal_voltage = 3600,
.termination_vol = 4150,
.termination_curr = 80,
.recharge_cap = 95,
.normal_cur_lvl = 700,
.normal_vol_lvl = 4200,
.maint_a_cur_lvl = 600,
.maint_a_vol_lvl = 4150,
.maint_a_chg_timer_h = 60,
.maint_b_cur_lvl = 600,
.maint_b_vol_lvl = 4100,
.maint_b_chg_timer_h = 200,
.low_high_cur_lvl = 300,
.low_high_vol_lvl = 4000,
.n_temp_tbl_elements = ARRAY_SIZE(temp_tbl_B_thermistor),
.r_to_t_tbl = temp_tbl_B_thermistor,
.n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl_B_thermistor),
.v_to_cap_tbl = cap_tbl_B_thermistor,
.n_batres_tbl_elements = ARRAY_SIZE(temp_to_batres_tbl_thermistor),
.batres_tbl = temp_to_batres_tbl_thermistor,
},
};
static struct abx500_battery_type bat_type_ext_thermistor[] = {
[BATTERY_UNKNOWN] = {
/* First element always represent the UNKNOWN battery */
.name = POWER_SUPPLY_TECHNOLOGY_UNKNOWN,
.resis_high = 0,
.resis_low = 0,
.battery_resistance = 300,
.charge_full_design = 612,
.nominal_voltage = 3700,
.termination_vol = 4050,
.termination_curr = 200,
.recharge_cap = 95,
.normal_cur_lvl = 400,
.normal_vol_lvl = 4100,
.maint_a_cur_lvl = 400,
.maint_a_vol_lvl = 4050,
.maint_a_chg_timer_h = 60,
.maint_b_cur_lvl = 400,
.maint_b_vol_lvl = 4000,
.maint_b_chg_timer_h = 200,
.low_high_cur_lvl = 300,
.low_high_vol_lvl = 4000,
.n_temp_tbl_elements = ARRAY_SIZE(temp_tbl),
.r_to_t_tbl = temp_tbl,
.n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl),
.v_to_cap_tbl = cap_tbl,
.n_batres_tbl_elements = ARRAY_SIZE(temp_to_batres_tbl_thermistor),
.batres_tbl = temp_to_batres_tbl_thermistor,
},
/*
* These are the batteries that doesn't have an internal NTC resistor to measure
* its temperature. The temperature in this case is measure with a NTC placed
* near the battery but on the PCB.
*/
{
.name = POWER_SUPPLY_TECHNOLOGY_LIPO,
.resis_high = 76000,
.resis_low = 53000,
.battery_resistance = 300,
.charge_full_design = 900,
.nominal_voltage = 3700,
.termination_vol = 4150,
.termination_curr = 100,
.recharge_cap = 95,
.normal_cur_lvl = 700,
.normal_vol_lvl = 4200,
.maint_a_cur_lvl = 600,
.maint_a_vol_lvl = 4150,
.maint_a_chg_timer_h = 60,
.maint_b_cur_lvl = 600,
.maint_b_vol_lvl = 4100,
.maint_b_chg_timer_h = 200,
.low_high_cur_lvl = 300,
.low_high_vol_lvl = 4000,
.n_temp_tbl_elements = ARRAY_SIZE(temp_tbl),
.r_to_t_tbl = temp_tbl,
.n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl),
.v_to_cap_tbl = cap_tbl,
.n_batres_tbl_elements = ARRAY_SIZE(temp_to_batres_tbl_thermistor),
.batres_tbl = temp_to_batres_tbl_thermistor,
},
{
.name = POWER_SUPPLY_TECHNOLOGY_LION,
.resis_high = 30000,
.resis_low = 10000,
.battery_resistance = 300,
.charge_full_design = 950,
.nominal_voltage = 3700,
.termination_vol = 4150,
.termination_curr = 100,
.recharge_cap = 95,
.normal_cur_lvl = 700,
.normal_vol_lvl = 4200,
.maint_a_cur_lvl = 600,
.maint_a_vol_lvl = 4150,
.maint_a_chg_timer_h = 60,
.maint_b_cur_lvl = 600,
.maint_b_vol_lvl = 4100,
.maint_b_chg_timer_h = 200,
.low_high_cur_lvl = 300,
.low_high_vol_lvl = 4000,
.n_temp_tbl_elements = ARRAY_SIZE(temp_tbl),
.r_to_t_tbl = temp_tbl,
.n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl),
.v_to_cap_tbl = cap_tbl,
.n_batres_tbl_elements = ARRAY_SIZE(temp_to_batres_tbl_thermistor),
.batres_tbl = temp_to_batres_tbl_thermistor,
},
{
.name = POWER_SUPPLY_TECHNOLOGY_LION,
.resis_high = 95000,
.resis_low = 76001,
.battery_resistance = 300,
.charge_full_design = 950,
.nominal_voltage = 3700,
.termination_vol = 4150,
.termination_curr = 100,
.recharge_cap = 95,
.normal_cur_lvl = 700,
.normal_vol_lvl = 4200,
.maint_a_cur_lvl = 600,
.maint_a_vol_lvl = 4150,
.maint_a_chg_timer_h = 60,
.maint_b_cur_lvl = 600,
.maint_b_vol_lvl = 4100,
.maint_b_chg_timer_h = 200,
.low_high_cur_lvl = 300,
.low_high_vol_lvl = 4000,
.n_temp_tbl_elements = ARRAY_SIZE(temp_tbl),
.r_to_t_tbl = temp_tbl,
.n_v_cap_tbl_elements = ARRAY_SIZE(cap_tbl),
.v_to_cap_tbl = cap_tbl,
.n_batres_tbl_elements = ARRAY_SIZE(temp_to_batres_tbl_thermistor),
.batres_tbl = temp_to_batres_tbl_thermistor,
},
};
static const struct abx500_bm_capacity_levels cap_levels = {
.critical = 2,
.low = 10,
.normal = 70,
.high = 95,
.full = 100,
};
static const struct abx500_fg_parameters fg = {
.recovery_sleep_timer = 10,
.recovery_total_time = 100,
.init_timer = 1,
.init_discard_time = 5,
.init_total_time = 40,
.high_curr_time = 60,
.accu_charging = 30,
.accu_high_curr = 30,
.high_curr_threshold = 50,
.lowbat_threshold = 3100,
.battok_falling_th_sel0 = 2860,
.battok_raising_th_sel1 = 2860,
.maint_thres = 95,
.user_cap_limit = 15,
.pcut_enable = 1,
.pcut_max_time = 127,
.pcut_flag_time = 112,
.pcut_max_restart = 15,
.pcut_debounce_time = 2,
};
static const struct abx500_maxim_parameters ab8500_maxi_params = {
.ena_maxi = true,
.chg_curr = 910,
.wait_cycles = 10,
.charger_curr_step = 100,
};
static const struct abx500_maxim_parameters abx540_maxi_params = {
.ena_maxi = true,
.chg_curr = 3000,
.wait_cycles = 10,
.charger_curr_step = 200,
};
static const struct abx500_bm_charger_parameters chg = {
.usb_volt_max = 5500,
.usb_curr_max = 1500,
.ac_volt_max = 7500,
.ac_curr_max = 1500,
};
/*
* This array maps the raw hex value to charger output current used by the
* AB8500 values
*/
static int ab8500_charge_output_curr_map[] = {
100, 200, 300, 400, 500, 600, 700, 800,
900, 1000, 1100, 1200, 1300, 1400, 1500, 1500,
};
static int ab8540_charge_output_curr_map[] = {
0, 0, 0, 75, 100, 125, 150, 175,
200, 225, 250, 275, 300, 325, 350, 375,
400, 425, 450, 475, 500, 525, 550, 575,
600, 625, 650, 675, 700, 725, 750, 775,
800, 825, 850, 875, 900, 925, 950, 975,
1000, 1025, 1050, 1075, 1100, 1125, 1150, 1175,
1200, 1225, 1250, 1275, 1300, 1325, 1350, 1375,
1400, 1425, 1450, 1500, 1600, 1700, 1900, 2000,
};
/*
* This array maps the raw hex value to charger input current used by the
* AB8500 values
*/
static int ab8500_charge_input_curr_map[] = {
50, 98, 193, 290, 380, 450, 500, 600,
700, 800, 900, 1000, 1100, 1300, 1400, 1500,
};
static int ab8540_charge_input_curr_map[] = {
25, 50, 75, 100, 125, 150, 175, 200,
225, 250, 275, 300, 325, 350, 375, 400,
425, 450, 475, 500, 525, 550, 575, 600,
625, 650, 675, 700, 725, 750, 775, 800,
825, 850, 875, 900, 925, 950, 975, 1000,
1025, 1050, 1075, 1100, 1125, 1150, 1175, 1200,
1225, 1250, 1275, 1300, 1325, 1350, 1375, 1400,
1425, 1450, 1475, 1500, 1500, 1500, 1500, 1500,
};
struct abx500_bm_data ab8500_bm_data = {
.temp_under = 3,
.temp_low = 8,
.temp_high = 43,
.temp_over = 48,
.main_safety_tmr_h = 4,
.temp_interval_chg = 20,
.temp_interval_nochg = 120,
.usb_safety_tmr_h = 4,
.bkup_bat_v = BUP_VCH_SEL_2P6V,
.bkup_bat_i = BUP_ICH_SEL_150UA,
.no_maintenance = false,
.capacity_scaling = false,
.adc_therm = ABx500_ADC_THERM_BATCTRL,
.chg_unknown_bat = false,
.enable_overshoot = false,
.fg_res = 100,
.cap_levels = &cap_levels,
.bat_type = bat_type_thermistor,
.n_btypes = ARRAY_SIZE(bat_type_thermistor),
.batt_id = 0,
.interval_charging = 5,
.interval_not_charging = 120,
.temp_hysteresis = 3,
.gnd_lift_resistance = 34,
.chg_output_curr = ab8500_charge_output_curr_map,
.n_chg_out_curr = ARRAY_SIZE(ab8500_charge_output_curr_map),
.maxi = &ab8500_maxi_params,
.chg_params = &chg,
.fg_params = &fg,
.chg_input_curr = ab8500_charge_input_curr_map,
.n_chg_in_curr = ARRAY_SIZE(ab8500_charge_input_curr_map),
};
struct abx500_bm_data ab8540_bm_data = {
.temp_under = 3,
.temp_low = 8,
.temp_high = 43,
.temp_over = 48,
.main_safety_tmr_h = 4,
.temp_interval_chg = 20,
.temp_interval_nochg = 120,
.usb_safety_tmr_h = 4,
.bkup_bat_v = BUP_VCH_SEL_2P6V,
.bkup_bat_i = BUP_ICH_SEL_150UA,
.no_maintenance = false,
.capacity_scaling = false,
.adc_therm = ABx500_ADC_THERM_BATCTRL,
.chg_unknown_bat = false,
.enable_overshoot = false,
.fg_res = 100,
.cap_levels = &cap_levels,
.bat_type = bat_type_thermistor,
.n_btypes = ARRAY_SIZE(bat_type_thermistor),
.batt_id = 0,
.interval_charging = 5,
.interval_not_charging = 120,
.temp_hysteresis = 3,
.gnd_lift_resistance = 0,
.maxi = &abx540_maxi_params,
.chg_params = &chg,
.fg_params = &fg,
.chg_output_curr = ab8540_charge_output_curr_map,
.n_chg_out_curr = ARRAY_SIZE(ab8540_charge_output_curr_map),
.chg_input_curr = ab8540_charge_input_curr_map,
.n_chg_in_curr = ARRAY_SIZE(ab8540_charge_input_curr_map),
};
int ab8500_bm_of_probe(struct device *dev,
struct device_node *np,
struct abx500_bm_data *bm)
{
struct batres_vs_temp *tmp_batres_tbl;
struct device_node *battery_node;
const char *btech;
int i;
/* get phandle to 'battery-info' node */
battery_node = of_parse_phandle(np, "battery", 0);
if (!battery_node) {
dev_err(dev, "battery node or reference missing\n");
return -EINVAL;
}
btech = of_get_property(battery_node, "stericsson,battery-type", NULL);
if (!btech) {
dev_warn(dev, "missing property battery-name/type\n");
return -EINVAL;
}
if (strncmp(btech, "LION", 4) == 0) {
bm->no_maintenance = true;
bm->chg_unknown_bat = true;
bm->bat_type[BATTERY_UNKNOWN].charge_full_design = 2600;
bm->bat_type[BATTERY_UNKNOWN].termination_vol = 4150;
bm->bat_type[BATTERY_UNKNOWN].recharge_cap = 95;
bm->bat_type[BATTERY_UNKNOWN].normal_cur_lvl = 520;
bm->bat_type[BATTERY_UNKNOWN].normal_vol_lvl = 4200;
}
if (of_property_read_bool(battery_node, "thermistor-on-batctrl")) {
if (strncmp(btech, "LION", 4) == 0)
tmp_batres_tbl = temp_to_batres_tbl_9100;
else
tmp_batres_tbl = temp_to_batres_tbl_thermistor;
} else {
bm->n_btypes = 4;
bm->bat_type = bat_type_ext_thermistor;
bm->adc_therm = ABx500_ADC_THERM_BATTEMP;
tmp_batres_tbl = temp_to_batres_tbl_ext_thermistor;
}
/* select the battery resolution table */
for (i = 0; i < bm->n_btypes; ++i)
bm->bat_type[i].batres_tbl = tmp_batres_tbl;
of_node_put(battery_node);
return 0;
}
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