From 9dcf68fac888211758f43b2adf9b930d519a26da Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Sat, 17 Jan 2015 16:39:20 +0100 Subject: sunxi: axp209: Disable interrupts when intializing the axp209 We do not use the axp209 interrupt, and at least in my mini-x (which does not have a power button) the pwr-button pin and the irq pin are soldered together, so if the axp209 keeps it irq asserted too long it will see a 10s pwr-button press and hard power off the board, disabling the irqs fixes this. Signed-off-by: Hans de Goede Acked-by: Ian Campbell --- drivers/power/axp209.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/power/axp209.c b/drivers/power/axp209.c index 3b1a6a73ae..4565398b0b 100644 --- a/drivers/power/axp209.c +++ b/drivers/power/axp209.c @@ -16,6 +16,11 @@ enum axp209_reg { AXP209_DCDC3_VOLTAGE = 0x27, AXP209_LDO24_VOLTAGE = 0x28, AXP209_LDO3_VOLTAGE = 0x29, + AXP209_IRQ_ENABLE1 = 0x40, + AXP209_IRQ_ENABLE2 = 0x41, + AXP209_IRQ_ENABLE3 = 0x42, + AXP209_IRQ_ENABLE4 = 0x43, + AXP209_IRQ_ENABLE5 = 0x44, AXP209_IRQ_STATUS5 = 0x4c, AXP209_SHUTDOWN = 0x32, AXP209_GPIO0_CTRL = 0x90, @@ -143,7 +148,7 @@ int axp209_set_ldo4(int mvolt) int axp209_init(void) { u8 ver; - int rc; + int i, rc; rc = axp209_read(AXP209_CHIP_VERSION, &ver); if (rc) @@ -155,6 +160,13 @@ int axp209_init(void) if (ver != 0x1) return -1; + /* Mask all interrupts */ + for (i = AXP209_IRQ_ENABLE1; i <= AXP209_IRQ_ENABLE5; i++) { + rc = axp209_write(i, 0); + if (rc) + return rc; + } + return 0; } -- cgit v1.2.1