From be16fd50abe7744481565c2c314a6e714a3e9ee0 Mon Sep 17 00:00:00 2001
From: Tim Koczwara <tim.koczwara@esope.de>
Date: Wed, 27 Nov 2024 15:02:15 +0100
Subject: [PATCH] Added bounce_buffer_size_px for slint

---
 source/module/display/internal/display_esp32s3.c  | 2 ++
 source/module/display/internal/display_internal.h | 4 ++++
 source/module/display/sld/display_sld.c           | 3 +++
 3 files changed, 9 insertions(+)

diff --git a/source/module/display/internal/display_esp32s3.c b/source/module/display/internal/display_esp32s3.c
index 723d60d..3d0001d 100644
--- a/source/module/display/internal/display_esp32s3.c
+++ b/source/module/display/internal/display_esp32s3.c
@@ -155,6 +155,8 @@ display_mcu_handle_t display_mcu_init(const display_common_hardware_t* config, d
         mcu->panel_config.disp_gpio_num = P(config->rgb.disp_en);
         mcu->panel_config.flags.disp_active_low = display->mcu_config.rgb.esp32.flags.disp_active_low;
         mcu->panel_config.flags.fb_in_psram = display->mcu_config.rgb.esp32.flags.fb_in_psram;
+        mcu->panel_config.bounce_buffer_size_px =     mcu->panel_config.timings.h_res   // Width
+                                                    * mcu->panel_config.timings.v_res   // Height
                                                     * (display->mcu_config.rgb.esp32.bounce_buffer_size_percent / 100.0); // Percentage of the screen used as bounce buffer
                                                             
     if(config->rgb.data_width == 16)
diff --git a/source/module/display/internal/display_internal.h b/source/module/display/internal/display_internal.h
index 73033b5..1a02c1c 100644
--- a/source/module/display/internal/display_internal.h
+++ b/source/module/display/internal/display_internal.h
@@ -166,6 +166,10 @@ typedef union display_mcu_rgb_config_s
                 /// Alignment for framebuffer that allocated in PSRAM 
                 size_t psram_trans_align;
 #endif
+                /// When using psram you can create a bounce buffer that is used to transmit data to the display from the sram.
+                /// If used, the esp copies the data from psram into sram before the data is sent to the display.
+                /// Set the value in percent based on the resolution of the display.
+                float bounce_buffer_size_percent;
             }esp32; // ESP32S3 and P4
         }rgb;
     };
diff --git a/source/module/display/sld/display_sld.c b/source/module/display/sld/display_sld.c
index 736a750..919493c 100644
--- a/source/module/display/sld/display_sld.c
+++ b/source/module/display/sld/display_sld.c
@@ -156,6 +156,9 @@ display_handle_t display_sld_init(const display_common_hardware_t* config, const
 #endif
     device->mcu_config.rgb.esp32.flags.fb_in_psram = true;
     device->mcu_config.rgb.esp32.flags.relax_on_idle = false;
+#if KERNEL_USES_SLINT
+    device->mcu_config.rgb.esp32.bounce_buffer_size_percent = 5;
+#endif
 #endif
     //[0] is 0
     ASSERT_RET(eeid[1] == 1, goto error, NULL, "Display with DPI needed\n");