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authorNeilBrown <neilb@suse.de>2013-10-31 17:05:50 +1100
committerAnton Vorontsov <anton@enomsg.org>2013-11-12 22:35:45 -0800
commitec0b380245d7b7d4d8e4201facca780a14352cda (patch)
tree3257053e219e8818f2ef2f0d5df89aec8fa49934 /drivers/power/twl4030_charger.c
parent588bd5918baca940a52802045f3b388358dc6917 (diff)
twl4030_charger: Add devicetree support
This allows the charger to be enabled with devicetree, and allows the parameters for charging the backup battery to be set. Signed-off-by: NeilBrown <neilb@suse.de> Acked-by: Kumar Gala <galak@codeaurora.org> Acked-by: Grant Likely <grant.likely@linaro.org> Signed-off-by: Anton Vorontsov <anton@enomsg.org>
Diffstat (limited to 'drivers/power/twl4030_charger.c')
-rw-r--r--drivers/power/twl4030_charger.c47
1 files changed, 44 insertions, 3 deletions
diff --git a/drivers/power/twl4030_charger.c b/drivers/power/twl4030_charger.c
index d98abe911e37..f14108844e1a 100644
--- a/drivers/power/twl4030_charger.c
+++ b/drivers/power/twl4030_charger.c
@@ -495,10 +495,38 @@ static enum power_supply_property twl4030_charger_props[] = {
POWER_SUPPLY_PROP_CURRENT_NOW,
};
+#ifdef CONFIG_OF
+static const struct twl4030_bci_platform_data *
+twl4030_bci_parse_dt(struct device *dev)
+{
+ struct device_node *np = dev->of_node;
+ struct twl4030_bci_platform_data *pdata;
+ u32 num;
+
+ if (!np)
+ return NULL;
+ pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ return pdata;
+
+ if (of_property_read_u32(np, "ti,bb-uvolt", &num) == 0)
+ pdata->bb_uvolt = num;
+ if (of_property_read_u32(np, "ti,bb-uamp", &num) == 0)
+ pdata->bb_uamp = num;
+ return pdata;
+}
+#else
+static inline const struct twl4030_bci_platform_data *
+twl4030_bci_parse_dt(struct device *dev)
+{
+ return NULL;
+}
+#endif
+
static int __init twl4030_bci_probe(struct platform_device *pdev)
{
struct twl4030_bci *bci;
- struct twl4030_bci_platform_data *pdata = pdev->dev.platform_data;
+ const struct twl4030_bci_platform_data *pdata = pdev->dev.platform_data;
int ret;
u32 reg;
@@ -506,6 +534,9 @@ static int __init twl4030_bci_probe(struct platform_device *pdev)
if (bci == NULL)
return -ENOMEM;
+ if (!pdata)
+ pdata = twl4030_bci_parse_dt(&pdev->dev);
+
bci->dev = &pdev->dev;
bci->irq_chg = platform_get_irq(pdev, 0);
bci->irq_bci = platform_get_irq(pdev, 1);
@@ -581,8 +612,11 @@ static int __init twl4030_bci_probe(struct platform_device *pdev)
twl4030_charger_enable_ac(true);
twl4030_charger_enable_usb(bci, true);
- twl4030_charger_enable_backup(pdata->bb_uvolt,
- pdata->bb_uamp);
+ if (pdata)
+ twl4030_charger_enable_backup(pdata->bb_uvolt,
+ pdata->bb_uamp);
+ else
+ twl4030_charger_enable_backup(0, 0);
return 0;
@@ -631,10 +665,17 @@ static int __exit twl4030_bci_remove(struct platform_device *pdev)
return 0;
}
+static const struct of_device_id twl_bci_of_match[] = {
+ {.compatible = "ti,twl4030-bci", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, twl_bci_of_match);
+
static struct platform_driver twl4030_bci_driver = {
.driver = {
.name = "twl4030_bci",
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(twl_bci_of_match),
},
.remove = __exit_p(twl4030_bci_remove),
};