| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright 2015 MediaTek Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include <arch/io.h> |
| #include <console/console.h> |
| #include <delay.h> |
| #include <edid.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <stddef.h> |
| #include <soc/addressmap.h> |
| #include <soc/ddp.h> |
| |
| #define RDMA_FIFO_PSEUDO_SIZE(bytes) (((bytes) / 16) << 16) |
| #define RDMA_OUTPUT_VALID_FIFO_THRESHOLD(bytes) ((bytes) / 16) |
| |
| static void disp_config_main_path_connection(void) |
| { |
| write32(&mmsys_cfg->disp_ovl0_mout_en, OVL0_MOUT_EN_COLOR0); |
| |
| write32(&mmsys_cfg->disp_od_mout_en, OD_MOUT_EN_RDMA0); |
| |
| write32(&mmsys_cfg->disp_ufoe_mout_en, UFOE_MOUT_EN_DSI0); |
| |
| write32(&mmsys_cfg->disp_color0_sel_in, COLOR0_SEL_IN_OVL0); |
| } |
| |
| static void disp_config_main_path_mutex(void) |
| { |
| write32(&disp_mutex->mutex[0].mod, MUTEX_MOD_MAIN_PATH); |
| |
| /* Clock source from DSI0 */ |
| write32(&disp_mutex->mutex[0].sof, BIT(0)); |
| write32(&disp_mutex->mutex[0].en, BIT(0)); |
| } |
| |
| static void ovl_set_roi(u32 width, u32 height, u32 color) |
| { |
| write32(&disp_ovl[0]->roi_size, height << 16 | width); |
| write32(&disp_ovl[0]->roi_bgclr, color); |
| } |
| |
| static void ovl_layer_enable(void) |
| { |
| write32(&disp_ovl[0]->rdma[0].ctrl, BIT(0)); |
| write32(&disp_ovl[0]->rdma[0].mem_gmc_setting, RDMA_MEM_GMC); |
| |
| setbits_le32(&disp_ovl[0]->src_con, BIT(0)); |
| } |
| |
| static void rdma_start(void) |
| { |
| setbits_le32(&disp_rdma[0]->global_con, RDMA_ENGINE_EN); |
| } |
| |
| static void rdma_config(u32 width, u32 height, u32 pixel_clk) |
| { |
| u32 threshold; |
| u32 reg; |
| |
| /* Config width */ |
| clrsetbits_le32(&disp_rdma[0]->size_con_0, 0x1FFF, width); |
| |
| /* Config height */ |
| clrsetbits_le32(&disp_rdma[0]->size_con_1, 0xFFFFF, height); |
| |
| /* |
| * Enable FIFO underflow since DSI and DPI can't be blocked. Keep the |
| * FIFO pseudo size reset default of 8 KiB. Set the output threshold to |
| * 6 microseconds with 7/6 overhead to account for blanking, and with a |
| * pixel depth of 4 bytes: |
| */ |
| |
| threshold = pixel_clk * 4 * 7 / 1000; |
| |
| reg = RDMA_FIFO_UNDERFLOW_EN | |
| RDMA_FIFO_PSEUDO_SIZE(8 * KiB) | |
| RDMA_OUTPUT_VALID_FIFO_THRESHOLD(threshold); |
| |
| write32(&disp_rdma[0]->fifo_con, reg); |
| } |
| |
| static void od_start(u32 width, u32 height) |
| { |
| write32(&disp_od->size, width << 16 | height); |
| write32(&disp_od->cfg, OD_RELAY_MODE); |
| |
| write32(&disp_od->en, 1); |
| } |
| |
| static void ufoe_start(void) |
| { |
| write32(&disp_ufoe->start, UFO_BYPASS); |
| } |
| |
| static void color_start(u32 width, u32 height) |
| { |
| write32(&disp_color[0]->width, width); |
| write32(&disp_color[0]->height, height); |
| write32(&disp_color[0]->cfg_main, COLOR_BYPASS_ALL | COLOR_SEQ_SEL); |
| write32(&disp_color[0]->start, BIT(0)); |
| } |
| |
| static void ovl_layer_config(u32 fmt, u32 bpp, u32 width, u32 height) |
| { |
| write32(&disp_ovl[0]->layer[0].con, fmt << 12); |
| write32(&disp_ovl[0]->layer[0].src_size, height << 16 | width); |
| write32(&disp_ovl[0]->layer[0].pitch, (width * bpp) & 0xFFFF); |
| |
| ovl_layer_enable(); |
| } |
| |
| static void main_disp_path_setup(u32 width, u32 height, u32 pixel_clk) |
| { |
| /* Setup OVL */ |
| ovl_set_roi(width, height, 0); |
| |
| /* Setup RDMA0 */ |
| rdma_config(width, height, pixel_clk); |
| |
| /* Setup OD */ |
| od_start(width, height); |
| |
| /* Setup UFOE */ |
| ufoe_start(); |
| |
| /* Setup Color */ |
| color_start(width, height); |
| |
| /* Setup main path connection */ |
| disp_config_main_path_connection(); |
| |
| /* Setup main path mutex */ |
| disp_config_main_path_mutex(); |
| } |
| |
| static void disp_clock_on(void) |
| { |
| clrbits_le32(&mmsys_cfg->mmsys_cg_con0, CG_CON0_SMI_COMMON | |
| CG_CON0_SMI_LARB0 | |
| CG_CON0_MUTEX_32K | |
| CG_CON0_DISP_OVL0 | |
| CG_CON0_DISP_RDMA0 | |
| CG_CON0_DISP_COLOR0 | |
| CG_CON0_DISP_OD); |
| |
| clrbits_le32(&mmsys_cfg->mmsys_cg_con1, CG_CON1_DSI0_ENGINE | |
| CG_CON1_DSI0_DIGITAL); |
| } |
| |
| void mtk_ddp_init(void) |
| { |
| disp_clock_on(); |
| } |
| |
| void mtk_ddp_mode_set(const struct edid *edid) |
| { |
| u32 fmt = OVL_INFMT_RGBA8888; |
| u32 bpp = edid->framebuffer_bits_per_pixel / 8; |
| |
| main_disp_path_setup(edid->mode.ha, edid->mode.va, |
| edid->mode.pixel_clock); |
| |
| rdma_start(); |
| |
| ovl_layer_config(fmt, bpp, edid->mode.ha, edid->mode.va); |
| } |