From da7cd7408a7230ea474353b54b889ae877354326 Mon Sep 17 00:00:00 2001 From: Steve Markgraf Date: Sun, 11 Aug 2019 02:10:24 +0200 Subject: fw/abb/twl3025: Add function to query PWON state This allows us to detect power button presses on the Pirelli DP-L10 and the Huawei GTM900-B module. Polling will only be activated once the power button has been pressed and we received the interrupt. The goal is to reduce the required amount of TWL3025 register accesses to a minimum. Change-Id: I31be61c8089173aed616abd1ede6c4cf5c9b6770 --- src/target/firmware/abb/twl3025.c | 28 ++++++++++++++++++++++++++++ src/target/firmware/include/abb/twl3025.h | 2 ++ 2 files changed, 30 insertions(+) diff --git a/src/target/firmware/abb/twl3025.c b/src/target/firmware/abb/twl3025.c index e4fcf4f0..ad2b01f9 100644 --- a/src/target/firmware/abb/twl3025.c +++ b/src/target/firmware/abb/twl3025.c @@ -60,8 +60,15 @@ const uint16_t twl3025_default_ramp[16] = { ABB_RAMP_VAL( 0, 0), }; +typedef enum pwon_state { + PWON_IDLE, + PWON_DETECTED, + PWON_REPORTED, +} pwon_state_t; + struct twl3025 { uint8_t page; + pwon_state_t pwon; }; static struct twl3025 twl3025_state; @@ -106,6 +113,8 @@ static void twl3025_irq(enum irq_nr nr) case IRQ_EXTERNAL: // charger in/out, pwrbtn, adc done src = twl3025_reg_read(ITSTATREG); // printd("itstatreg 0x%02x\n", src); + if ((src & 0x04) && twl3025_state.pwon == PWON_IDLE) + twl3025_state.pwon = PWON_DETECTED; if (src & 0x08) handle_charger(); if (src & 0x20) @@ -127,6 +136,7 @@ void twl3025_init(void) twl3025_clk13m(1); twl3025_reg_write(AFCCTLADD, 0x01); /* AFCCK(1:0) must not be zero! */ twl3025_unit_enable(TWL3025_UNIT_AFC, 1); + twl3025_state.pwon = PWON_IDLE; irq_register_handler(IRQ_EXTERNAL, &twl3025_irq); irq_config(IRQ_EXTERNAL, 0, 0, 0); @@ -185,6 +195,24 @@ static void twl3025_wait_ibic_access(void) delay_ms(1); } +int twl3025_get_pwon(void) +{ + switch (twl3025_state.pwon) { + case PWON_DETECTED: + twl3025_state.pwon = PWON_REPORTED; + break; + case PWON_REPORTED: + if (twl3025_reg_read(VRPCSTS) & 0x10) + twl3025_state.pwon = PWON_IDLE; + break; + case PWON_IDLE: + default: + break; + } + + return (twl3025_state.pwon != PWON_IDLE); +} + void twl3025_power_off(void) { unsigned long flags; diff --git a/src/target/firmware/include/abb/twl3025.h b/src/target/firmware/include/abb/twl3025.h index 36406449..938a4252 100755 --- a/src/target/firmware/include/abb/twl3025.h +++ b/src/target/firmware/include/abb/twl3025.h @@ -144,6 +144,8 @@ void twl3025_init(void); void twl3025_reg_write(uint8_t reg, uint16_t data); uint16_t twl3025_reg_read(uint8_t reg); +int twl3025_get_pwon(void); + void twl3025_power_off(void); void twl3025_clk13m(int enable); -- cgit v1.2.3