From 3b4ddebe631b14d15abe7355fbabe53e08c61a61 Mon Sep 17 00:00:00 2001
From: Uros Majstorovic <majstor@majstor.org>
Date: Wed, 26 Aug 2020 02:05:19 +0200
Subject: display list burst mode added

---
 fw/fe310/eos/eve/eve.c | 26 +++++++++++++++++++++++---
 fw/fe310/eos/eve/eve.h |  3 ++-
 2 files changed, 25 insertions(+), 4 deletions(-)

diff --git a/fw/fe310/eos/eve/eve.c b/fw/fe310/eos/eve/eve.c
index 1152699..6b3943e 100644
--- a/fw/fe310/eos/eve/eve.c
+++ b/fw/fe310/eos/eve/eve.c
@@ -8,7 +8,10 @@
 
 static char _cmd_burst;
 static uint16_t _cmd_offset;
+
+static char _dl_burst;
 static uint32_t _dl_addr;
+
 static uint32_t *_touch_calib;
 static uint8_t _brigtness;
 static uint8_t _power_state;
@@ -96,15 +99,32 @@ static void _dl_inc(uint32_t i) {
     _dl_addr += i;
 }
 
-void eve_dl_start(uint32_t addr) {
+void eve_dl_start(uint32_t addr, char burst) {
     _dl_addr = addr;
+    _dl_burst = burst;
+    if (burst) {
+        eve_spi_cs_set();
+        eve_spi_xchg24(addr | EVE_MEM_WRITE, EVE_SPI_FLAG_TX);
+    }
 }
 
 void eve_dl_write(uint32_t dl) {
-    eve_write32(_dl_addr, dl);
+    if (_dl_burst) {
+        eve_spi_xchg32(dl, EVE_SPI_FLAG_TX | EVE_SPI_FLAG_BSWAP);
+    } else {
+        eve_write32(_dl_addr, dl);
+    }
     _dl_inc(4);
 }
 
+void eve_dl_end(void) {
+    if (_dl_burst) {
+        eve_spi_flush();
+        eve_spi_cs_clear();
+        _dl_burst = 0;
+    }
+}
+
 void eve_dl_swap(void) {
     eve_write8(REG_DLSWAP, EVE_DLSWAP_FRAME);
 }
@@ -343,7 +363,7 @@ static int _init(void) {
     eve_write8(REG_VOL_PB, 0x00);           /* turn recorded audio volume off */
 
     /* write a basic display-list to get things started */
-    eve_dl_start(EVE_RAM_DL);
+    eve_dl_start(EVE_RAM_DL, 0);
     eve_dl_write(CLEAR_COLOR_RGB(0,0,0));
     eve_dl_write(CLEAR(1,1,1));
     eve_dl_write(DISPLAY());
diff --git a/fw/fe310/eos/eve/eve.h b/fw/fe310/eos/eve/eve.h
index c482d83..e204158 100644
--- a/fw/fe310/eos/eve/eve.h
+++ b/fw/fe310/eos/eve/eve.h
@@ -37,8 +37,9 @@ void eve_write32(uint32_t addr, uint32_t data);
 void eve_readb(uint32_t addr, uint8_t *b, size_t size);
 void eve_writeb(uint32_t addr, uint8_t *b, size_t size);
 
-void eve_dl_start(uint32_t addr);
+void eve_dl_start(uint32_t addr, char burst);
 void eve_dl_write(uint32_t dl);
+void eve_dl_end(void);
 void eve_dl_swap(void);
 uint32_t eve_dl_get_addr(void);
 
-- 
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