From 20a7e173c2a3604c418242f3e60ca36a28108816 Mon Sep 17 00:00:00 2001 From: Milo Kim Date: Sun, 18 Dec 2016 11:54:27 +0900 Subject: [PATCH] power: supply: tps65217: Support USB charger interrupt TPS65217 has two charger interrupts - AC and USB power status change. Interrupt number in the TPS65217 driver data: IRQ number is only used on requesting the interrupt, so no need to keep it inside the driver data. Interrupt handler: Check not only AC but also USB charger status. In both cases, enable charging operation. Interrupt request: If an interrupt number is invalid, then use legacy polling thread. Otherwise, create IRQ threads to handle AC and USB charger event. Signed-off-by: Milo Kim Signed-off-by: Sebastian Reichel --- drivers/power/supply/tps65217_charger.c | 52 +++++++++++++------------ 1 file changed, 28 insertions(+), 24 deletions(-) diff --git a/drivers/power/supply/tps65217_charger.c b/drivers/power/supply/tps65217_charger.c index 4fe71abe1bd3..482ee9f9edff 100644 --- a/drivers/power/supply/tps65217_charger.c +++ b/drivers/power/supply/tps65217_charger.c @@ -35,6 +35,8 @@ #include #include +#define CHARGER_STATUS_PRESENT (TPS65217_STATUS_ACPWR | TPS65217_STATUS_USBPWR) +#define NUM_CHARGER_IRQS 2 #define POLL_INTERVAL (HZ * 2) struct tps65217_charger { @@ -46,8 +48,6 @@ struct tps65217_charger { int prev_ac_online; struct task_struct *poll_task; - - int irq; }; static enum power_supply_property tps65217_ac_props[] = { @@ -144,8 +144,8 @@ static irqreturn_t tps65217_charger_irq(int irq, void *dev) dev_dbg(charger->dev, "%s: 0x%x\n", __func__, val); - /* check for AC status bit */ - if (val & TPS65217_STATUS_ACPWR) { + /* check for charger status bit */ + if (val & CHARGER_STATUS_PRESENT) { ret = tps65217_enable_charging(charger); if (ret) { dev_err(charger->dev, @@ -201,8 +201,9 @@ static int tps65217_charger_probe(struct platform_device *pdev) struct tps65217_charger *charger; struct power_supply_config cfg = {}; struct task_struct *poll_task; - int irq; + int irq[NUM_CHARGER_IRQS]; int ret; + int i; dev_dbg(&pdev->dev, "%s\n", __func__); @@ -225,10 +226,8 @@ static int tps65217_charger_probe(struct platform_device *pdev) return PTR_ERR(charger->ac); } - irq = platform_get_irq_byname(pdev, "AC"); - if (irq < 0) - irq = -ENXIO; - charger->irq = irq; + irq[0] = platform_get_irq_byname(pdev, "USB"); + irq[1] = platform_get_irq_byname(pdev, "AC"); ret = tps65217_config_charger(charger); if (ret < 0) { @@ -236,21 +235,8 @@ static int tps65217_charger_probe(struct platform_device *pdev) return ret; } - if (irq != -ENXIO) { - ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, - tps65217_charger_irq, - 0, "tps65217-charger", - charger); - if (ret) { - dev_err(charger->dev, - "Unable to register irq %d err %d\n", irq, - ret); - return ret; - } - - /* Check current state */ - tps65217_charger_irq(irq, charger); - } else { + /* Create a polling thread if an interrupt is invalid */ + if (irq[0] < 0 || irq[1] < 0) { poll_task = kthread_run(tps65217_charger_poll_task, charger, "ktps65217charger"); if (IS_ERR(poll_task)) { @@ -261,6 +247,24 @@ static int tps65217_charger_probe(struct platform_device *pdev) } charger->poll_task = poll_task; + return 0; + } + + /* Create IRQ threads for charger interrupts */ + for (i = 0; i < NUM_CHARGER_IRQS; i++) { + ret = devm_request_threaded_irq(&pdev->dev, irq[i], NULL, + tps65217_charger_irq, + 0, "tps65217-charger", + charger); + if (ret) { + dev_err(charger->dev, + "Unable to register irq %d err %d\n", irq[i], + ret); + return ret; + } + + /* Check current state */ + tps65217_charger_irq(-1, charger); } return 0; -- 2.20.1