diff options
| -rw-r--r-- | Documentation/devicetree/bindings/power/bq2477x-charger.txt | 22 | ||||
| -rw-r--r-- | drivers/power/bq2477x-charger.c | 49 |
2 files changed, 70 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/power/bq2477x-charger.txt b/Documentation/devicetree/bindings/power/bq2477x-charger.txt new file mode 100644 index 000000000000..6f9eee6a943f --- /dev/null +++ b/Documentation/devicetree/bindings/power/bq2477x-charger.txt @@ -0,0 +1,22 @@ +bq2477x charger +~~~~~~~~~~~~~~~ + +Required properties : + - compatible : should contain "ti,bq2477x". + - ti,dac-ichg : Charge current that must be programmed + - ti,dac-v : The maximum charge voltage that must be programmed + - ti,dac-minsv : The minimum System voltage that must be programmed + - ti,dac-iin : The input current that must be programmed + - ti,wdt-refresh-timeout : watch dog timer that must be programmed + +Example: + + bq2477x@6a { + compatible = "ti,bq2477x"; + reg = <0x6a>; + ti,dac-ichg = <2240>; + ti,dac-v = <9008>; + ti,dac-minsv = <4608>; + ti,dac-iin = <4992>; + ti,wdt-refresh-timeout = <40>; + }; diff --git a/drivers/power/bq2477x-charger.c b/drivers/power/bq2477x-charger.c index 3e694426d25e..14e74cef142f 100644 --- a/drivers/power/bq2477x-charger.c +++ b/drivers/power/bq2477x-charger.c @@ -244,6 +244,45 @@ static void bq2477x_work_thread(struct kthread_work *work) } } +static void of_bq2477x_parse_platform_data(struct i2c_client *client, + struct bq2477x_platform_data *pdata) +{ + struct device_node *np = client->dev.of_node; + u32 pval; + int ret; + + ret = of_property_read_u32(np, "ti,dac-ichg", &pval); + if (!ret) + pdata->dac_ichg = pval; + else + dev_warn(&client->dev, "dac-ichg not provided\n"); + + ret = of_property_read_u32(np, "ti,dac-v", &pval); + if (!ret) + pdata->dac_v = pval; + else + dev_warn(&client->dev, "dac-v not provided\n"); + + ret = of_property_read_u32(np, "ti,dac-minsv", &pval); + if (!ret) + pdata->dac_minsv = pval; + else + dev_warn(&client->dev, "dac-minsv not provided\n"); + + ret = of_property_read_u32(np, "ti,dac-iin", &pval); + if (!ret) + pdata->dac_iin = pval; + else + dev_warn(&client->dev, "dac-iin not provided\n"); + + ret = of_property_read_u32(np, "ti,wdt-refresh-timeout", &pval); + if (!ret) + pdata->wdt_refresh_timeout = pval; + else + dev_warn(&client->dev, "wdt-refresh-timeout not provided\n"); + +} + static int bq2477x_probe(struct i2c_client *client, const struct i2c_device_id *id) { @@ -251,7 +290,15 @@ static int bq2477x_probe(struct i2c_client *client, struct bq2477x_platform_data *pdata; int ret = 0; - pdata = client->dev.platform_data; + if (client->dev.of_node) { + pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return -ENOMEM; + of_bq2477x_parse_platform_data(client, pdata); + } else { + pdata = client->dev.platform_data; + } + if (!pdata) { dev_err(&client->dev, "No Platform data"); return -EINVAL; |