From ec0caa569b356f186e87c13e50550ca1b807dde6 Mon Sep 17 00:00:00 2001
From: Uros Majstorovic <majstor@majstor.org>
Date: Sun, 4 Sep 2022 18:16:20 +0200
Subject: eve support when i2s is running

---
 fw/fe310/eos/eve/eve.c | 40 +++++++++++++++++++++-------------------
 1 file changed, 21 insertions(+), 19 deletions(-)

(limited to 'fw/fe310/eos/eve/eve.c')

diff --git a/fw/fe310/eos/eve/eve.c b/fw/fe310/eos/eve/eve.c
index 7f77190..45ac886 100644
--- a/fw/fe310/eos/eve/eve.c
+++ b/fw/fe310/eos/eve/eve.c
@@ -223,6 +223,9 @@ void eve_cmd(uint32_t cmd, const char *fmt, ...) {
             case 'p':
                 cmd_buffer(va_arg(argv, const char *), va_arg(argv, int), flags);
                 break;
+            case '0':
+                cmd_padding(flags);
+                break;
             case '+':
                 cont = 1;
                 break;
@@ -294,11 +297,12 @@ void eve_cmd_burst_end(void) {
     cmd_burst = 0;
 }
 
-void eve_handle_intr(void) {
+uint16_t eve_handle_intr(void) {
     uint16_t intr_flags;
 
     intr_flags = eve_read16(REG_INT_FLAGS);
     if (intr_flags & (EVE_INT_CONVCOMPLETE | EVE_INT_TAG)) eve_handle_touch(intr_flags);
+    return intr_flags;
 }
 
 int eve_init(void) {
@@ -377,19 +381,7 @@ int eve_init(void) {
     return EVE_OK;
 }
 
-void eve_start(void) {
-    /* enable interrupts */
-    eve_write8(REG_INT_EN, 0x01);
-    while(eve_read8(REG_INT_FLAGS));
-}
-
-void eve_stop(void) {
-    /* disable interrupts */
-    eve_write8(REG_INT_EN, 0x00);
-    while(eve_read8(REG_INT_FLAGS));
-}
-
-void eve_start_clk(void) {
+void eve_clk_start(void) {
     uint16_t gpiox;
 
     eve_write8(REG_PCLK, EVE_PCLK);         /* start clocking data to the LCD panel */
@@ -397,7 +389,7 @@ void eve_start_clk(void) {
     eve_write16(REG_GPIOX, gpiox);          /* enable the DISP signal to the LCD panel, it is set to output in REG_GPIOX_DIR */
 }
 
-void eve_stop_clk(void) {
+void eve_clk_stop(void) {
     uint16_t gpiox;
 
     gpiox = eve_read16(REG_GPIOX) & ~0x8000;
@@ -405,6 +397,16 @@ void eve_stop_clk(void) {
     eve_write8(REG_PCLK, 0);
 }
 
+void eve_intr_enable(void) {
+    eve_write8(REG_INT_EN, 0x01);
+    while(eve_read8(REG_INT_FLAGS));
+}
+
+void eve_intr_disable(void) {
+    eve_write8(REG_INT_EN, 0x00);
+    while(eve_read8(REG_INT_FLAGS));
+}
+
 void eve_activate(void) {
     eve_command(EVE_ACTIVE, 0);
     eve_sleep(40);
@@ -421,8 +423,8 @@ void eve_pwr_standby(void) {
 void eve_pwr_sleep(void) {
     if (power_state != EVE_PSTATE_ACTIVE) return;
 
-    eve_stop_clk();
-    eve_stop();
+    eve_clk_stop();
+    eve_intr_disable();
 
     eve_command(EVE_SLEEP, 0);
 
@@ -433,8 +435,8 @@ void eve_pwr_wake(void) {
     eve_activate();
 
     if (power_state == EVE_PSTATE_SLEEP) {
-        eve_start();
-        eve_start_clk();
+        eve_intr_enable();
+        eve_clk_start();
     }
 
     power_state = EVE_PSTATE_ACTIVE;
-- 
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