ab8500: Add devicetree support for fuelgauge

- This patch adds device tree support for fuelgauge driver
- optimize bm devices platform_data usage and of_probe(...)
  Note: of_probe() routine for battery managed devices is made
  common across all bm drivers.
- test status:
  - interrupt numbers assigned differs between legacy and FDT mode.

Signed-off-by: Rajanikanth H.V <rajanikanth.hv@stericsson.com>
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>

1 files changed, 521 insertions, 0 deletions

diff --git a/drivers/power/ab8500_bmdata.c b/drivers/power/ab8500_bmdata.c
new file mode 100644
index 000000000000..e7639b6659f7
--- /dev/null
+++ b/drivers/power/ab8500_bmdata.c
@@ -0,0 +1,521 @@
+#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, 165418},
+        { 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_vol = 3990,
+        .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_vol = 4130,
+        .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 = 165418,
+        .resis_low = 82869,
+        .battery_resistance = 300,
+        .charge_full_design = 900,
+        .nominal_voltage = 3600,
+        .termination_vol = 4150,
+        .termination_curr = 80,
+        .recharge_vol = 4130,
+        .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_vol = 3990,
+        .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_vol = 4130,
+        .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_vol = 4130,
+        .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_vol = 4130,
+        .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,
+        .user_cap_limit = 15,
+        .maint_thres = 97,
+};
+
+static const struct abx500_maxim_parameters maxi_params = {
+        .ena_maxi = true,
+        .chg_curr = 910,
+        .wait_cycles = 10,
+        .charger_curr_step = 100,
+};
+
+static const struct abx500_bm_charger_parameters chg = {
+        .usb_volt_max           = 5500,
+        .usb_curr_max           = 1500,
+        .ac_volt_max            = 7500,
+        .ac_curr_max            = 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,
+        .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               = 3,
+        .batt_id                = 0,
+        .interval_charging      = 5,
+        .interval_not_charging  = 120,
+        .temp_hysteresis        = 3,
+        .gnd_lift_resistance    = 34,
+        .maxi                   = &maxi_params,
+        .chg_params             = &chg,
+        .fg_params              = &fg,
+};
+
+int __devinit
+bmdevs_of_probe(struct device *dev,
+                struct device_node *np,
+                struct abx500_bm_data **battery)
+{
+        struct  abx500_battery_type *btype;
+        struct  device_node *np_bat_supply;
+        struct  abx500_bm_data *bat;
+        const char *btech;
+        char bat_tech[8];
+        int i, thermistor;
+
+        *battery = &ab8500_bm_data;
+
+        /* get phandle to 'battery-info' node */
+        np_bat_supply = of_parse_phandle(np, "battery", 0);
+        if (!np_bat_supply) {
+                dev_err(dev, "missing property battery\n");
+                return -EINVAL;
+        }
+        if (of_property_read_bool(np_bat_supply,
+                        "thermistor-on-batctrl"))
+                thermistor = NTC_INTERNAL;
+        else
+                thermistor = NTC_EXTERNAL;
+
+        bat = *battery;
+        if (thermistor == NTC_EXTERNAL) {
+                bat->n_btypes  = 4;
+                bat->bat_type  = bat_type_ext_thermistor;
+                bat->adc_therm = ABx500_ADC_THERM_BATTEMP;
+        }
+        btech = of_get_property(np_bat_supply,
+                "stericsson,battery-type", NULL);
+        if (!btech) {
+                dev_warn(dev, "missing property battery-name/type\n");
+                strcpy(bat_tech, "UNKNOWN");
+        } else {
+                strcpy(bat_tech, btech);
+        }
+
+        if (strncmp(bat_tech, "LION", 4) == 0) {
+                bat->no_maintenance  = true;
+                bat->chg_unknown_bat = true;
+                bat->bat_type[BATTERY_UNKNOWN].charge_full_design = 2600;
+                bat->bat_type[BATTERY_UNKNOWN].termination_vol    = 4150;
+                bat->bat_type[BATTERY_UNKNOWN].recharge_vol       = 4130;
+                bat->bat_type[BATTERY_UNKNOWN].normal_cur_lvl     = 520;
+                bat->bat_type[BATTERY_UNKNOWN].normal_vol_lvl     = 4200;
+        }
+        /* select the battery resolution table */
+        for (i = 0; i < bat->n_btypes; ++i) {
+                btype = (bat->bat_type + i);
+                if (thermistor == NTC_EXTERNAL) {
+                        btype->batres_tbl =
+                                temp_to_batres_tbl_ext_thermistor;
+                } else if (strncmp(bat_tech, "LION", 4) == 0) {
+                        btype->batres_tbl =
+                                temp_to_batres_tbl_9100;
+                } else {
+                        btype->batres_tbl =
+                                temp_to_batres_tbl_thermistor;
+                }
+        }
+        of_node_put(np_bat_supply);
+        return 0;
+}