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bdk: di: allocate fifo buffer once

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CTCaer 2022-01-20 12:09:29 +02:00
parent 6a74f6ed04
commit 3bb46c6470
1 changed files with 13 additions and 7 deletions
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20
bdk/display/di.c
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@ -1,6 +1,6 @@
/*
* Copyright (c) 2018 naehrwert
* Copyright (c) 2018-2021 CTCaer
* Copyright (c) 2018-2022 CTCaer
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
@ -176,10 +176,14 @@ int display_dsi_read(u8 cmd, u32 len, void *data, bool video_enabled)
void display_dsi_write(u8 cmd, u32 len, void *data, bool video_enabled)
{
static u32 *fifo32 = NULL;
u8 *fifo8;
u32 *fifo32;
u32 host_control;
// Allocate fifo buffer.
if (!fifo32)
fifo32 = malloc(DSI_STATUS_RX_FIFO_SIZE * 8 * sizeof(u32));
// Enable host cmd packets during video and save host control.
if (video_enabled)
DSI(_DSIREG(DSI_VIDEO_MODE_CONTROL)) = DSI_CMD_PKT_VID_ENABLE;
@ -199,7 +203,7 @@ void display_dsi_write(u8 cmd, u32 len, void *data, bool video_enabled)
break;
default:
fifo32 = calloc(DSI_STATUS_RX_FIFO_SIZE * 8, 4);
memset(fifo32, 0, DSI_STATUS_RX_FIFO_SIZE * 8 * sizeof(u32));
fifo8 = (u8 *)fifo32;
fifo32[0] = (len << 8) | MIPI_DSI_DCS_LONG_WRITE;
fifo8[4] = cmd;
@ -208,7 +212,6 @@ void display_dsi_write(u8 cmd, u32 len, void *data, bool video_enabled)
for (u32 i = 0; i < (ALIGN(len, 4) / 4); i++)
DSI(_DSIREG(DSI_WR_DATA)) = fifo32[i];
DSI(_DSIREG(DSI_TRIGGER)) = DSI_TRIGGER_HOST;
free(fifo32);
break;
}
@ -223,8 +226,12 @@ void display_dsi_write(u8 cmd, u32 len, void *data, bool video_enabled)
void display_dsi_vblank_write(u8 cmd, u32 len, void *data)
{
static u32 *fifo32 = NULL;
u8 *fifo8;
u32 *fifo32;
// Allocate fifo buffer.
if (!fifo32)
fifo32 = malloc(DSI_STATUS_RX_FIFO_SIZE * 8 * sizeof(u32));
// Enable vblank interrupt.
DISPLAY_A(_DIREG(DC_CMD_INT_ENABLE)) = DC_CMD_INT_FRAME_END_INT;
@ -248,7 +255,7 @@ void display_dsi_vblank_write(u8 cmd, u32 len, void *data)
break;
default:
fifo32 = calloc(DSI_STATUS_RX_FIFO_SIZE * 8, 4);
memset(fifo32, 0, DSI_STATUS_RX_FIFO_SIZE * 8 * sizeof(u32));
fifo8 = (u8 *)fifo32;
fifo32[0] = (len << 8) | MIPI_DSI_DCS_LONG_WRITE;
fifo8[4] = cmd;
@ -256,7 +263,6 @@ void display_dsi_vblank_write(u8 cmd, u32 len, void *data)
len += 4 + 1; // Increase length by CMD/length word and DCS CMD.
for (u32 i = 0; i < (ALIGN(len, 4) / 4); i++)
DSI(_DSIREG(DSI_WR_DATA)) = fifo32[i];
free(fifo32);
break;
}