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https://github.com/FEX-Emu/linux.git
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ab8500: Add devicetree support for charger
This patch adds device tree support for ab8500-charger driver Signed-off-by: Rajanikanth H.V <rajanikanth.hv@stericsson.com> Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
This commit is contained in:
Rajanikanth H.V
Anton Vorontsov
parent
bd9e8ab2d5
commit
4aef72dbb2
@ -36,6 +36,20 @@ ab8500-btemp : : vtvout : Battery Temperature
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: BTEMP_LOW_MEDIUM : : BtempLow < Btemp < BtempMedium,if battery temperature is between -10 and 0°C
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: BTEMP_MEDIUM_HIGH : : BtempMedium < Btemp < BtempHigh,if battery temperature is between 0°C and“MaxTemp
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: BTEMP_HIGH : : Btemp > BtempHigh, if battery temperature is higher than “MaxTemp
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ab8500-charger : : vddadc : Charger interface
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: MAIN_CH_UNPLUG_DET : : main charger unplug detection management (not in 8505)
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: MAIN_CHARGE_PLUG_DET : : main charger plug detection management (not in 8505)
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: MAIN_EXT_CH_NOT_OK : : main charger not OK
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: MAIN_CH_TH_PROT_R : : Die temp is above main charger
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: MAIN_CH_TH_PROT_F : : Die temp is below main charger
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: VBUS_DET_F : : VBUS falling detected
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: VBUS_DET_R : : VBUS rising detected
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: USB_LINK_STATUS : : USB link status has changed
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: USB_CH_TH_PROT_R : : Die temp is above usb charger
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: USB_CH_TH_PROT_F : : Die temp is below usb charger
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: USB_CHARGER_NOT_OKR : : allowed USB charger not ok detection
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: VBUS_OVV : : Overvoltage on Vbus ball detected (USB charge is stopped)
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: CH_WD_EXP : : Charger watchdog detected
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ab8500-gpadc : HW_CONV_END : vddadc : Analogue to Digital Converter
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SW_CONV_END : :
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ab8500-gpio : : : GPIO Controller
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@ -0,0 +1,25 @@
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=== AB8500 Charger Driver ===
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Required Properties:
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- compatible = Shall be "stericsson,ab8500-charger"
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- battery = Shall be battery specific information
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Example:
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ab8500_charger {
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compatible = "stericsson,ab8500-charger";
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battery = <&ab8500_battery>;
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};
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- vddadc-supply: Supply for USB and Main charger
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Example:
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ab8500-charger {
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vddadc-supply = <&ab8500_ldo_tvout_reg>;
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}
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- autopower_cfg:
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Boolean value depicting the presence of 'automatic poweron after powerloss'
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Example:
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ab8500-charger {
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autopower_cfg;
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};
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For information on battery specific node, Ref:
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Documentation/devicetree/bindings/power_supply/ab8500/fg.txt
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@ -367,6 +367,12 @@
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battery = <&ab8500_battery>;
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};
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ab8500_charger {
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compatible = "stericsson,ab8500-charger";
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battery = <&ab8500_battery>;
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vddadc-supply = <&ab8500_ldo_tvout_reg>;
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};
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ab8500_usb {
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compatible = "stericsson,ab8500-usb";
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interrupts = < 90 0x4
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@ -1041,8 +1041,13 @@ static struct mfd_cell __devinitdata abx500_common_devs[] = {
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static struct mfd_cell __devinitdata ab8500_bm_devs[] = {
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{
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.name = "ab8500-charger",
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.of_compatible = "stericsson,ab8500-charger",
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.num_resources = ARRAY_SIZE(ab8500_charger_resources),
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.resources = ab8500_charger_resources,
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#ifndef CONFIG_OF
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.platform_data = &ab8500_bm_data,
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.pdata_size = sizeof(ab8500_bm_data),
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#endif
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},
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{
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.name = "ab8500-btemp",
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@ -23,6 +23,8 @@
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#include <linux/err.h>
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#include <linux/workqueue.h>
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#include <linux/kobject.h>
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#include <linux/of.h>
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#include <linux/mfd/core.h>
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#include <linux/mfd/abx500/ab8500.h>
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#include <linux/mfd/abx500.h>
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#include <linux/mfd/abx500/ab8500-bm.h>
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@ -181,9 +183,9 @@ struct ab8500_charger_usb_state {
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* @vbat Battery voltage
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* @old_vbat Previously measured battery voltage
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* @autopower Indicate if we should have automatic pwron after pwrloss
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* @autopower_cfg platform specific power config support for "pwron after pwrloss"
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* @parent: Pointer to the struct ab8500
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* @gpadc: Pointer to the struct gpadc
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* @pdata: Pointer to the abx500_charger platform data
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* @bat: Pointer to the abx500_bm platform data
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* @flags: Structure for information about events triggered
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* @usb_state: Structure for usb stack information
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@ -218,9 +220,9 @@ struct ab8500_charger {
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int vbat;
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int old_vbat;
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bool autopower;
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bool autopower_cfg;
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struct ab8500 *parent;
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struct ab8500_gpadc *gpadc;
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struct abx500_bmdevs_plat_data *pdata;
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struct abx500_bm_data *bat;
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struct ab8500_charger_event_flags flags;
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struct ab8500_charger_usb_state usb_state;
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@ -322,7 +324,7 @@ static void ab8500_power_loss_handling(struct ab8500_charger *di)
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static void ab8500_power_supply_changed(struct ab8500_charger *di,
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struct power_supply *psy)
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{
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if (di->pdata->autopower_cfg) {
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if (di->autopower_cfg) {
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if (!di->usb.charger_connected &&
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!di->ac.charger_connected &&
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di->autopower) {
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@ -2526,25 +2528,45 @@ static int __devexit ab8500_charger_remove(struct platform_device *pdev)
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power_supply_unregister(&di->usb_chg.psy);
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power_supply_unregister(&di->ac_chg.psy);
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platform_set_drvdata(pdev, NULL);
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kfree(di);
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return 0;
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}
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static char *supply_interface[] = {
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"ab8500_chargalg",
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"ab8500_fg",
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"ab8500_btemp",
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};
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static int __devinit ab8500_charger_probe(struct platform_device *pdev)
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{
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struct abx500_bmdevs_plat_data *plat_data = pdev->dev.platform_data;
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struct device_node *np = pdev->dev.of_node;
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struct ab8500_charger *di;
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int irq, i, charger_status, ret = 0;
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if (!plat_data) {
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dev_err(&pdev->dev, "No platform data\n");
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return -EINVAL;
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}
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di = kzalloc(sizeof(*di), GFP_KERNEL);
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if (!di)
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di = devm_kzalloc(&pdev->dev, sizeof(*di), GFP_KERNEL);
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if (!di) {
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dev_err(&pdev->dev, "%s no mem for ab8500_charger\n", __func__);
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return -ENOMEM;
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}
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di->bat = pdev->mfd_cell->platform_data;
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if (!di->bat) {
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if (np) {
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ret = bmdevs_of_probe(&pdev->dev, np, &di->bat);
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if (ret) {
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dev_err(&pdev->dev,
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"failed to get battery information\n");
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return ret;
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}
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di->autopower_cfg = of_property_read_bool(np, "autopower_cfg");
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} else {
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dev_err(&pdev->dev, "missing dt node for ab8500_charger\n");
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return -EINVAL;
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}
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} else {
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dev_info(&pdev->dev, "falling back to legacy platform data\n");
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di->autopower_cfg = false;
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}
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/* get parent data */
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di->dev = &pdev->dev;
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@ -2554,14 +2576,6 @@ static int __devinit ab8500_charger_probe(struct platform_device *pdev)
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/* initialize lock */
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spin_lock_init(&di->usb_state.usb_lock);
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/* get charger specific platform data */
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di->pdata = plat_data;
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if (!di->pdata) {
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dev_err(di->dev, "no charger platform data supplied\n");
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ret = -EINVAL;
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goto free_device_info;
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}
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di->autopower = false;
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/* AC supply */
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@ -2571,8 +2585,8 @@ static int __devinit ab8500_charger_probe(struct platform_device *pdev)
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di->ac_chg.psy.properties = ab8500_charger_ac_props;
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di->ac_chg.psy.num_properties = ARRAY_SIZE(ab8500_charger_ac_props);
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di->ac_chg.psy.get_property = ab8500_charger_ac_get_property;
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di->ac_chg.psy.supplied_to = di->pdata->supplied_to;
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di->ac_chg.psy.num_supplicants = di->pdata->num_supplicants;
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di->ac_chg.psy.supplied_to = supply_interface;
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di->ac_chg.psy.num_supplicants = ARRAY_SIZE(supply_interface),
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/* ux500_charger sub-class */
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di->ac_chg.ops.enable = &ab8500_charger_ac_en;
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di->ac_chg.ops.kick_wd = &ab8500_charger_watchdog_kick;
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@ -2589,8 +2603,8 @@ static int __devinit ab8500_charger_probe(struct platform_device *pdev)
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di->usb_chg.psy.properties = ab8500_charger_usb_props;
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di->usb_chg.psy.num_properties = ARRAY_SIZE(ab8500_charger_usb_props);
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di->usb_chg.psy.get_property = ab8500_charger_usb_get_property;
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di->usb_chg.psy.supplied_to = di->pdata->supplied_to;
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di->usb_chg.psy.num_supplicants = di->pdata->num_supplicants;
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di->usb_chg.psy.supplied_to = supply_interface;
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di->usb_chg.psy.num_supplicants = ARRAY_SIZE(supply_interface),
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/* ux500_charger sub-class */
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di->usb_chg.ops.enable = &ab8500_charger_usb_en;
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di->usb_chg.ops.kick_wd = &ab8500_charger_watchdog_kick;
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@ -2606,8 +2620,7 @@ static int __devinit ab8500_charger_probe(struct platform_device *pdev)
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create_singlethread_workqueue("ab8500_charger_wq");
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if (di->charger_wq == NULL) {
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dev_err(di->dev, "failed to create work queue\n");
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ret = -ENOMEM;
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goto free_device_info;
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return -ENOMEM;
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}
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/* Init work for HW failure check */
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@ -2749,12 +2762,14 @@ free_regulator:
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regulator_put(di->regu);
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free_charger_wq:
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destroy_workqueue(di->charger_wq);
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free_device_info:
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kfree(di);
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return ret;
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}
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static const struct of_device_id ab8500_charger_match[] = {
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{ .compatible = "stericsson,ab8500-charger", },
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{ },
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};
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static struct platform_driver ab8500_charger_driver = {
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.probe = ab8500_charger_probe,
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.remove = __devexit_p(ab8500_charger_remove),
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@ -2763,6 +2778,7 @@ static struct platform_driver ab8500_charger_driver = {
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.driver = {
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.name = "ab8500-charger",
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.owner = THIS_MODULE,
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.of_match_table = ab8500_charger_match,
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},
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};
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