diff options
| author |   Stephen Boyd <stephen.boyd@linaro.org> | 2016-06-25 22:54:37 -0700 |
|---|---|---|
| committer |   Sebastian Reichel <sre@kernel.org> | 2016-06-29 23:10:12 +0200 |
| commit | eee1d077f0d74bcd411c18148a31a5d3aab42284 (patch) | |
| tree | 57ea4b29298899e1f322b92aba87a0808cee37b9 /drivers/power | |
| parent | max8903: adds support for initiation via device tree (diff) | |
| download | linux-dev-eee1d077f0d74bcd411c18148a31a5d3aab42284.tar.xz linux-dev-eee1d077f0d74bcd411c18148a31a5d3aab42284.zip | |
power: qcom_smbb: Make an extcon for usb cable detection
On these PMICs the usb cable connection/disconnection is
indicated by the usb-valid interrupt being high or low
respectively. Let's make an extcon for that, so we can notify usb
drivers of the cable state.
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/power/qcom_smbb.c | 21 |
2 files changed, 22 insertions, 0 deletions
diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig index 421770ddafa3..6bff735c632d 100644 --- a/drivers/power/Kconfig +++ b/drivers/power/Kconfig @@ -393,6 +393,7 @@ config CHARGER_QCOM_SMBB tristate "Qualcomm Switch-Mode Battery Charger and Boost" depends on MFD_SPMI_PMIC || COMPILE_TEST depends on OF + depends on EXTCON help Say Y to include support for the Switch-Mode Battery Charger and Boost (SMBB) hardware found in Qualcomm PM8941 PMICs. The charger diff --git a/drivers/power/qcom_smbb.c b/drivers/power/qcom_smbb.c index 5eb1e9e543e2..b5896ba2a602 100644 --- a/drivers/power/qcom_smbb.c +++ b/drivers/power/qcom_smbb.c @@ -34,6 +34,7 @@ #include <linux/power_supply.h> #include <linux/regmap.h> #include <linux/slab.h> +#include <linux/extcon.h> #define SMBB_CHG_VMAX 0x040 #define SMBB_CHG_VSAFE 0x041 @@ -111,6 +112,7 @@ struct smbb_charger { unsigned int revision; unsigned int addr; struct device *dev; + struct extcon_dev *edev; bool dc_disabled; bool jeita_ext_temp; @@ -125,6 +127,11 @@ struct smbb_charger { struct regmap *regmap; }; +static const unsigned int smbb_usb_extcon_cable[] = { + EXTCON_USB, + EXTCON_NONE, +}; + static int smbb_vbat_weak_fn(unsigned int index) { return 2100000 + index * 100000; @@ -371,6 +378,8 @@ static irqreturn_t smbb_usb_valid_handler(int irq, void *_data) struct smbb_charger *chg = _data; smbb_set_line_flag(chg, irq, STATUS_USBIN_VALID); + extcon_set_cable_state_(chg->edev, EXTCON_USB, + chg->status & STATUS_USBIN_VALID); power_supply_changed(chg->usb_psy); return IRQ_HANDLED; @@ -849,6 +858,18 @@ static int smbb_charger_probe(struct platform_device *pdev) return PTR_ERR(chg->usb_psy); } + chg->edev = devm_extcon_dev_allocate(&pdev->dev, smbb_usb_extcon_cable); + if (IS_ERR(chg->edev)) { + dev_err(&pdev->dev, "failed to allocate extcon device\n"); + return -ENOMEM; + } + + rc = devm_extcon_dev_register(&pdev->dev, chg->edev); + if (rc < 0) { + dev_err(&pdev->dev, "failed to register extcon device\n"); + return rc; + } + if (!chg->dc_disabled) { dc_cfg.drv_data = chg; dc_cfg.supplied_to = smbb_bif; |