From 4c9dfee7138392e6b476d3ed65df6eb761ed64db Mon Sep 17 00:00:00 2001
From: Rahix <rahix@rahix.de>
Date: Thu, 4 Jul 2019 15:20:53 +0200
Subject: [PATCH] feat(libcard10): Add PMIC interrupt handler
Signed-off-by: Rahix <rahix@rahix.de>
---
lib/card10/pmic.c | 52 +++++++++++++++++++++++++++++++++++++++++++++--
lib/card10/pmic.h | 4 ++++
2 files changed, 54 insertions(+), 2 deletions(-)
diff --git a/lib/card10/pmic.c b/lib/card10/pmic.c
index c4625d7fe..28feae708 100644
--- a/lib/card10/pmic.c
+++ b/lib/card10/pmic.c
@@ -4,6 +4,12 @@
#include <stdint.h>
#include <stdio.h>
+static void pmic_interrupt_callback(void*_);
+static const gpio_cfg_t pmic_interrupt_pin = {
+ PORT_0, PIN_12, GPIO_FUNC_IN, GPIO_PAD_PULL_UP
+};
+static pmic_button_callback_fn pmic_button_callback = NULL;
+
void pmic_init(void)
{
uint8_t didm = MAX77650_getDIDM();
@@ -62,6 +68,50 @@ void pmic_init(void)
MAX77650_setCHG_EN(1); // Turn on charger
MAX77650_setVSYS_REG(0b11000); // Set VSYS to 4.7 V to reduce voltage across bypass diode
+
+ /* Setup interrupt & callback */
+ GPIO_Config(&pmic_interrupt_pin);
+ GPIO_RegisterCallback(&pmic_interrupt_pin, pmic_interrupt_callback, NULL);
+ GPIO_IntConfig(&pmic_interrupt_pin, GPIO_INT_EDGE, GPIO_INT_FALLING);
+ GPIO_IntEnable(&pmic_interrupt_pin);
+ NVIC_EnableIRQ((IRQn_Type)MXC_GPIO_GET_IRQ(pmic_interrupt_pin.port));
+
+/* Dropout Detector Rising */
+#define MAX77650_INT_DOD_R (1 << 6)
+/* Thermal Alarm 2 Rising */
+#define MAX77650_INT_TJAL2_R (1 << 5)
+/* Thermal Alarm 1 Rising */
+#define MAX77650_INT_TJAL1_R (1 << 4)
+/* nEN Rising */
+#define MAX77650_INT_nEN_R (1 << 3)
+/* nEN Falling */
+#define MAX77650_INT_nEN_F (1 << 2)
+/* GPI Rising */
+#define MAX77650_INT_GPI_R (1 << 1)
+/* GPI Falling */
+#define MAX77650_INT_GPI_F (1 << 0)
+
+ /* Setup power button interrupt */
+ MAX77650_setINT_M_GLBL(~(MAX77650_INT_nEN_R | MAX77650_INT_nEN_F));
+ /* Clear existing interrupts */
+ MAX77650_getINT_GLBL();
+}
+
+static void pmic_interrupt_callback(void*_)
+{
+ uint8_t int_flag = MAX77650_getINT_GLBL();
+
+ if (int_flag & (MAX77650_INT_nEN_R | MAX77650_INT_nEN_F)) {
+ if (pmic_button_callback != NULL) {
+ (*pmic_button_callback)(int_flag & MAX77650_INT_nEN_F);
+ }
+ }
+ /* TODO: Other pmic interrupts */
+}
+
+void pmic_set_button_callback(pmic_button_callback_fn cb)
+{
+ pmic_button_callback = cb;
}
void pmic_set_led(uint8_t led, uint8_t val)
@@ -80,5 +130,3 @@ void pmic_set_led(uint8_t led, uint8_t val)
}
}
-
-
diff --git a/lib/card10/pmic.h b/lib/card10/pmic.h
index 43dd99612..06874c289 100644
--- a/lib/card10/pmic.h
+++ b/lib/card10/pmic.h
@@ -2,8 +2,12 @@
#define PMIC_H
#include <stdint.h>
+#include <stdbool.h>
void pmic_init(void);
void pmic_set_led(uint8_t led, uint8_t val);
+typedef void (*pmic_button_callback_fn)(bool falling);
+void pmic_set_button_callback(pmic_button_callback_fn cb);
+
#endif
--
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