From 2b446dda5db1df77b9951d2c1908259076b1fbe1 Mon Sep 17 00:00:00 2001
From: Uros Majstorovic <majstor@majstor.org>
Date: Sun, 4 Sep 2022 18:16:56 +0200
Subject: eve support when i2s is running

---
 fw/fe310/eos/dev/eve.c | 73 +++++++++++++++++++++++++-------------------------
 fw/fe310/eos/dev/eve.h | 14 +++++++---
 2 files changed, 48 insertions(+), 39 deletions(-)

(limited to 'fw')

diff --git a/fw/fe310/eos/dev/eve.c b/fw/fe310/eos/dev/eve.c
index 4d86677..dd72b0f 100644
--- a/fw/fe310/eos/dev/eve.c
+++ b/fw/fe310/eos/dev/eve.c
@@ -17,16 +17,24 @@
 
 #include "eve.h"
 
-static void handle_time(unsigned char type) {
-    if (!eos_eve_running()) return;
+#define EVE_POLL_INTERVAL   2
 
+static void handle_time(unsigned char type) {
     eve_select();
     eve_handle_time();
     eve_deselect();
 }
 
-static void handle_evt(unsigned char type, unsigned char *buffer, uint16_t len) {
-    if (!eos_eve_running()) return;
+static void handle_poll(unsigned char type) {
+    if (eos_eve_intr_enabled()) return;
+
+    eve_select();
+    eve_handle_intr();
+    eve_deselect();
+}
+
+static void handle_intr_evt(unsigned char type, unsigned char *buffer, uint16_t len) {
+    if (!eos_eve_intr_enabled()) return;
 
     eve_select();
     eve_handle_intr();
@@ -41,26 +49,6 @@ static void handle_intr(void) {
     eos_evtq_push_isr(EOS_EVT_EVE | EVE_ETYPE_INTR, NULL, 0);
 }
 
-static void _start(void) {
-    eve_touch_start();
-    eve_start();
-
-    GPIO_REG(GPIO_INPUT_EN)     |=  (1 << EVE_PIN_INTR);
-    GPIO_REG(GPIO_LOW_IE)       |=  (1 << EVE_PIN_INTR);
-
-    eos_intr_enable(INT_GPIO_BASE + EVE_PIN_INTR);
-}
-
-static void _stop(void) {
-    eos_intr_disable(INT_GPIO_BASE + EVE_PIN_INTR);
-
-    GPIO_REG(GPIO_LOW_IE)       &= ~(1 << EVE_PIN_INTR);
-    GPIO_REG(GPIO_INPUT_EN)     &= ~(1 << EVE_PIN_INTR);
-
-    eve_touch_stop();
-    eve_stop();
-}
-
 int eos_eve_init(uint8_t wakeup_cause) {
     int rst = (wakeup_cause == EOS_PWR_WAKE_RST);
     int rv = EVE_OK;
@@ -81,7 +69,7 @@ int eos_eve_init(uint8_t wakeup_cause) {
 
     eve_touch_init();
 
-    eos_evtq_set_handler(EOS_EVT_EVE, handle_evt);
+    eos_evtq_set_handler(EOS_EVT_EVE, handle_intr_evt);
     eos_timer_set_handler(EOS_TIMER_ETYPE_UI, handle_time);
     eos_intr_set_handler(INT_GPIO_BASE + EVE_PIN_INTR, handle_intr);
     eos_intr_set_priority(INT_GPIO_BASE + EVE_PIN_INTR, IRQ_PRIORITY_EVE);
@@ -128,25 +116,38 @@ void eos_eve_set_tmatrix(const uint32_t *matrix) {
 
 int eos_eve_run(uint8_t wakeup_cause) {
     eve_select();
-    _start();
-    eve_start_clk();
+    eve_touch_start();
+    eve_intr_enable();
+    eve_clk_start();
     eve_deselect();
 
+    eos_eve_intr_enable();
     return EOS_OK;
 }
 
-void eos_eve_start(void) {
-    eve_select();
-    _start();
-    eve_deselect();
+void eos_eve_intr_enable(void) {
+    GPIO_REG(GPIO_INPUT_EN)     |=  (1 << EVE_PIN_INTR);
+    GPIO_REG(GPIO_LOW_IE)       |=  (1 << EVE_PIN_INTR);
+
+    eos_intr_enable(INT_GPIO_BASE + EVE_PIN_INTR);
+    eos_timer_set_handler(EOS_TIMER_ETYPE_EVE, NULL);
 }
 
-void eos_eve_stop(void) {
-    eve_select();
-    _stop();
-    eve_deselect();
+void eos_eve_intr_disable(void) {
+    eos_intr_disable(INT_GPIO_BASE + EVE_PIN_INTR);
+
+    GPIO_REG(GPIO_LOW_IE)       &= ~(1 << EVE_PIN_INTR);
+    GPIO_REG(GPIO_INPUT_EN)     &= ~(1 << EVE_PIN_INTR);
+    eos_timer_set_handler(EOS_TIMER_ETYPE_EVE, handle_poll);
 }
 
-int eos_eve_running(void) {
+int eos_eve_intr_enabled(void) {
     return !!(GPIO_REG(GPIO_INPUT_EN) & (1 << EVE_PIN_INTR));
 }
+
+void eos_eve_poll(void) {
+    if (eos_eve_intr_enabled()) return;
+    if (eos_timer_get(EOS_TIMER_ETYPE_EVE) != EOS_TIMER_NONE) return;
+
+    eos_timer_set(EOS_TIMER_ETYPE_EVE, EVE_POLL_INTERVAL);
+}
diff --git a/fw/fe310/eos/dev/eve.h b/fw/fe310/eos/dev/eve.h
index cb48364..1317bec 100644
--- a/fw/fe310/eos/dev/eve.h
+++ b/fw/fe310/eos/dev/eve.h
@@ -1,9 +1,17 @@
 #include <stdint.h>
 
+#define EVE_GPIO_DIR            0xf
+
+#define EVE_GPIO_CAM            0
+#define EVE_GPIO_LCD_EN         1
+#define EVE_GPIO_GAIN           2
+#define EVE_GPIO_HAPT           3
+
 int eos_eve_init(uint8_t wakeup_cause);
 void eos_eve_calibrate(void);
 void eos_eve_set_tmatrix(const uint32_t *matrix);
 int eos_eve_run(uint8_t wakeup_cause);
-void eos_eve_start(void);
-void eos_eve_stop(void);
-int eos_eve_running(void);
+void eos_eve_intr_enable(void);
+void eos_eve_intr_disable(void);
+int eos_eve_intr_enabled(void);
+void eos_eve_poll(void);
-- 
cgit v1.2.3