From 9ccb4db8d59ec9dab33ee8617d462f21a8bb4fa8 Mon Sep 17 00:00:00 2001
From: Uros Majstorovic <majstor@majstor.org>
Date: Fri, 13 May 2022 12:26:19 +0200
Subject: touch controller/eve fixes

---
 fw/fe310/eos/eve/eve.c | 42 ++++++++++++++++++++++--------------------
 1 file changed, 22 insertions(+), 20 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 e1191fc..02e0cae 100644
--- a/fw/fe310/eos/eve/eve.c
+++ b/fw/fe310/eos/eve/eve.c
@@ -13,6 +13,7 @@ static char dl_burst;
 static uint32_t dl_addr;
 
 static uint8_t power_state;
+static int lcd_absent = 0;
 
 void eve_command(uint8_t command, uint8_t parameter) {
     eve_spi_cs_set();
@@ -289,6 +290,7 @@ int eve_cmd_exec(int w) {
 
 void eve_cmd_burst_start(void) {
     uint32_t addr = EVE_RAM_CMD + cmd_offset;
+
     eve_spi_lock();
     eve_spi_cs_set();
     eve_spi_xchg24(addr | EVE_MEM_WRITE, EVE_SPI_FLAG_TX);
@@ -306,10 +308,10 @@ void eve_handle_intr(void) {
     uint16_t intr_flags;
 
     intr_flags = eve_read16(REG_INT_FLAGS);
-    eve_handle_touch(intr_flags);
+    if (intr_flags & (EVE_INT_CONVCOMPLETE | EVE_INT_TAG)) eve_handle_touch(intr_flags);
 }
 
-int eve_init(uint8_t gpio_dir, int touch_calibrate, uint32_t *touch_matrix) {
+int eve_init(uint8_t gpio_dir) {
     uint8_t chipid = 0;
     uint8_t reset = 0x07;
     uint16_t timeout;
@@ -319,11 +321,11 @@ int eve_init(uint8_t gpio_dir, int touch_calibrate, uint32_t *touch_matrix) {
     eve_command(EVE_CLKEXT, 0);
     eve_command(EVE_CLKSEL, 0x46);      /* set clock to 72 MHz */
     eve_command(EVE_ACTIVE, 0);         /* start EVE */
-    eve_time_sleep(4);
+    eve_sleep(4);
 
     timeout = 0;
     while (chipid != 0x7c) {            /* if chipid is not 0x7c, continue to read it until it is, EVE needs a moment for it's power on self-test and configuration */
-        eve_time_sleep(1);
+        eve_sleep(1);
         chipid = eve_read8(REG_ID);
         timeout++;
         if (timeout > 400) return EVE_ERR;
@@ -331,7 +333,7 @@ int eve_init(uint8_t gpio_dir, int touch_calibrate, uint32_t *touch_matrix) {
 
     timeout = 0;
     while (reset != 0x00) {             /* check if EVE is in working status */
-        eve_time_sleep(1);
+        eve_sleep(1);
         reset = eve_read8(REG_CPURESET) & 0x07;
 		timeout++;
 		if(timeout > 50) return EVE_ERR;
@@ -381,21 +383,16 @@ int eve_init(uint8_t gpio_dir, int touch_calibrate, uint32_t *touch_matrix) {
 #endif
     /* nothing is being displayed yet... the pixel clock is still 0x00 */
 
-    eve_touch_init(touch_calibrate, touch_matrix);
     return EVE_OK;
 }
 
 void eve_start(void) {
-    eve_touch_start();
-
     /* enable interrupts */
     eve_write8(REG_INT_EN, 0x01);
     while(eve_read8(REG_INT_FLAGS));
 }
 
 void eve_stop(void) {
-    eve_touch_stop();
-
     /* disable interrupts */
     eve_write8(REG_INT_EN, 0x00);
     while(eve_read8(REG_INT_FLAGS));
@@ -417,12 +414,12 @@ void eve_stop_clk(void) {
     eve_write8(REG_PCLK, 0);
 }
 
-void eve_active(void) {
+void eve_activate(void) {
     eve_command(EVE_ACTIVE, 0);
-    eve_time_sleep(40);
+    eve_sleep(40);
 }
 
-void eve_standby(void) {
+void eve_pwr_standby(void) {
     if (power_state != EVE_PSTATE_ACTIVE) return;
 
     eve_command(EVE_STANDBY, 0);
@@ -430,7 +427,7 @@ void eve_standby(void) {
     power_state = EVE_PSTATE_STANDBY;
 }
 
-void eve_sleep(void) {
+void eve_pwr_sleep(void) {
     if (power_state != EVE_PSTATE_ACTIVE) return;
 
     eve_stop_clk();
@@ -441,8 +438,8 @@ void eve_sleep(void) {
     power_state = EVE_PSTATE_SLEEP;
 }
 
-void eve_wake(void) {
-    eve_active();
+void eve_pwr_wake(void) {
+    eve_activate();
 
     if (power_state == EVE_PSTATE_SLEEP) {
         eve_start();
@@ -452,10 +449,6 @@ void eve_wake(void) {
     power_state = EVE_PSTATE_ACTIVE;
 }
 
-void eve_brightness(uint8_t b) {
-    eve_write8(REG_PWM_DUTY, b);
-}
-
 int eve_gpio_get(int gpio) {
     uint16_t reg = eve_read16(REG_GPIOX);
 
@@ -483,3 +476,12 @@ void eve_gpio_set_dir(uint8_t dir) {
     reg |= dir & 0x0f;
     eve_write16(REG_GPIOX_DIR, reg);
 }
+
+void eve_brightness(uint8_t b) {
+    if (lcd_absent) b = 0;
+    eve_write8(REG_PWM_DUTY, b);
+}
+
+void eve_lcd_absent(void) {
+    lcd_absent = 1;
+}
-- 
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