| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * Allwinner DE2 display driver |
| * |
| * (C) Copyright 2017 Jernej Skrabec <jernej.skrabec@siol.net> |
| */ |
| |
| #include <common.h> |
| #include <display.h> |
| #include <dm.h> |
| #include <edid.h> |
| #include <efi_loader.h> |
| #include <fdtdec.h> |
| #include <fdt_support.h> |
| #include <video.h> |
| #include <asm/global_data.h> |
| #include <asm/io.h> |
| #include <asm/arch/clock.h> |
| #include <asm/arch/display2.h> |
| #include <dm/device-internal.h> |
| #include <dm/uclass-internal.h> |
| #include "simplefb_common.h" |
| |
| DECLARE_GLOBAL_DATA_PTR; |
| |
| enum { |
| /* Maximum LCD size we support */ |
| LCD_MAX_WIDTH = 3840, |
| LCD_MAX_HEIGHT = 2160, |
| LCD_MAX_LOG2_BPP = VIDEO_BPP32, |
| }; |
| |
| static void sunxi_de2_composer_init(void) |
| { |
| struct sunxi_ccm_reg * const ccm = |
| (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; |
| |
| #ifdef CONFIG_MACH_SUN50I |
| u32 reg_value; |
| |
| /* set SRAM for video use (A64 only) */ |
| reg_value = readl(SUNXI_SRAMC_BASE + 0x04); |
| reg_value &= ~(0x01 << 24); |
| writel(reg_value, SUNXI_SRAMC_BASE + 0x04); |
| #endif |
| |
| clock_set_pll10(432000000); |
| |
| /* Set DE parent to pll10 */ |
| clrsetbits_le32(&ccm->de_clk_cfg, CCM_DE2_CTRL_PLL_MASK, |
| CCM_DE2_CTRL_PLL10); |
| |
| /* Set ahb gating to pass */ |
| setbits_le32(&ccm->ahb_reset1_cfg, 1 << AHB_RESET_OFFSET_DE); |
| setbits_le32(&ccm->ahb_gate1, 1 << AHB_GATE_OFFSET_DE); |
| |
| /* Clock on */ |
| setbits_le32(&ccm->de_clk_cfg, CCM_DE2_CTRL_GATE); |
| } |
| |
| static void sunxi_de2_mode_set(int mux, const struct display_timing *mode, |
| int bpp, ulong address, bool is_composite) |
| { |
| ulong de_mux_base = (mux == 0) ? |
| SUNXI_DE2_MUX0_BASE : SUNXI_DE2_MUX1_BASE; |
| struct de_clk * const de_clk_regs = |
| (struct de_clk *)(SUNXI_DE2_BASE); |
| struct de_glb * const de_glb_regs = |
| (struct de_glb *)(de_mux_base + |
| SUNXI_DE2_MUX_GLB_REGS); |
| struct de_bld * const de_bld_regs = |
| (struct de_bld *)(de_mux_base + |
| SUNXI_DE2_MUX_BLD_REGS); |
| struct de_ui * const de_ui_regs = |
| (struct de_ui *)(de_mux_base + |
| SUNXI_DE2_MUX_CHAN_REGS + |
| SUNXI_DE2_MUX_CHAN_SZ * 1); |
| struct de_csc * const de_csc_regs = |
| (struct de_csc *)(de_mux_base + |
| SUNXI_DE2_MUX_DCSC_REGS); |
| u32 size = SUNXI_DE2_WH(mode->hactive.typ, mode->vactive.typ); |
| int channel; |
| u32 format; |
| |
| /* enable clock */ |
| #ifdef CONFIG_MACH_SUN8I_H3 |
| setbits_le32(&de_clk_regs->rst_cfg, (mux == 0) ? 1 : 4); |
| #else |
| setbits_le32(&de_clk_regs->rst_cfg, BIT(mux)); |
| #endif |
| setbits_le32(&de_clk_regs->gate_cfg, BIT(mux)); |
| setbits_le32(&de_clk_regs->bus_cfg, BIT(mux)); |
| |
| clrbits_le32(&de_clk_regs->sel_cfg, 1); |
| |
| writel(SUNXI_DE2_MUX_GLB_CTL_EN, &de_glb_regs->ctl); |
| writel(0, &de_glb_regs->status); |
| writel(1, &de_glb_regs->dbuff); |
| writel(size, &de_glb_regs->size); |
| |
| for (channel = 0; channel < 4; channel++) { |
| void *ch = (void *)(de_mux_base + SUNXI_DE2_MUX_CHAN_REGS + |
| SUNXI_DE2_MUX_CHAN_SZ * channel); |
| memset(ch, 0, (channel == 0) ? |
| sizeof(struct de_vi) : sizeof(struct de_ui)); |
| } |
| memset(de_bld_regs, 0, sizeof(struct de_bld)); |
| |
| writel(0x00000101, &de_bld_regs->fcolor_ctl); |
| |
| writel(1, &de_bld_regs->route); |
| |
| writel(0, &de_bld_regs->premultiply); |
| writel(0xff000000, &de_bld_regs->bkcolor); |
| |
| writel(0x03010301, &de_bld_regs->bld_mode[0]); |
| |
| writel(size, &de_bld_regs->output_size); |
| writel(mode->flags & DISPLAY_FLAGS_INTERLACED ? 2 : 0, |
| &de_bld_regs->out_ctl); |
| writel(0, &de_bld_regs->ck_ctl); |
| |
| writel(0xff000000, &de_bld_regs->attr[0].fcolor); |
| writel(size, &de_bld_regs->attr[0].insize); |
| |
| /* Disable all other units */ |
| writel(0, de_mux_base + SUNXI_DE2_MUX_VSU_REGS); |
| writel(0, de_mux_base + SUNXI_DE2_MUX_GSU1_REGS); |
| writel(0, de_mux_base + SUNXI_DE2_MUX_GSU2_REGS); |
| writel(0, de_mux_base + SUNXI_DE2_MUX_GSU3_REGS); |
| writel(0, de_mux_base + SUNXI_DE2_MUX_FCE_REGS); |
| writel(0, de_mux_base + SUNXI_DE2_MUX_BWS_REGS); |
| writel(0, de_mux_base + SUNXI_DE2_MUX_LTI_REGS); |
| writel(0, de_mux_base + SUNXI_DE2_MUX_PEAK_REGS); |
| writel(0, de_mux_base + SUNXI_DE2_MUX_ASE_REGS); |
| writel(0, de_mux_base + SUNXI_DE2_MUX_FCC_REGS); |
| |
| if (is_composite) { |
| /* set CSC coefficients */ |
| writel(0x107, &de_csc_regs->coef11); |
| writel(0x204, &de_csc_regs->coef12); |
| writel(0x64, &de_csc_regs->coef13); |
| writel(0x4200, &de_csc_regs->coef14); |
| writel(0x1f68, &de_csc_regs->coef21); |
| writel(0x1ed6, &de_csc_regs->coef22); |
| writel(0x1c2, &de_csc_regs->coef23); |
| writel(0x20200, &de_csc_regs->coef24); |
| writel(0x1c2, &de_csc_regs->coef31); |
| writel(0x1e87, &de_csc_regs->coef32); |
| writel(0x1fb7, &de_csc_regs->coef33); |
| writel(0x20200, &de_csc_regs->coef34); |
| |
| /* enable CSC unit */ |
| writel(1, &de_csc_regs->csc_ctl); |
| } else { |
| writel(0, &de_csc_regs->csc_ctl); |
| } |
| |
| switch (bpp) { |
| case 16: |
| format = SUNXI_DE2_UI_CFG_ATTR_FMT(SUNXI_DE2_FORMAT_RGB_565); |
| break; |
| case 32: |
| default: |
| format = SUNXI_DE2_UI_CFG_ATTR_FMT(SUNXI_DE2_FORMAT_XRGB_8888); |
| break; |
| } |
| |
| writel(SUNXI_DE2_UI_CFG_ATTR_EN | format, &de_ui_regs->cfg[0].attr); |
| writel(size, &de_ui_regs->cfg[0].size); |
| writel(0, &de_ui_regs->cfg[0].coord); |
| writel((bpp / 8) * mode->hactive.typ, &de_ui_regs->cfg[0].pitch); |
| writel(address, &de_ui_regs->cfg[0].top_laddr); |
| writel(size, &de_ui_regs->ovl_size); |
| |
| /* apply settings */ |
| writel(1, &de_glb_regs->dbuff); |
| } |
| |
| static int sunxi_de2_init(struct udevice *dev, ulong fbbase, |
| enum video_log2_bpp l2bpp, |
| struct udevice *disp, int mux, bool is_composite) |
| { |
| struct video_priv *uc_priv = dev_get_uclass_priv(dev); |
| struct display_timing timing; |
| struct display_plat *disp_uc_plat; |
| int ret; |
| |
| disp_uc_plat = dev_get_uclass_platdata(disp); |
| debug("Using device '%s', disp_uc_priv=%p\n", disp->name, disp_uc_plat); |
| if (display_in_use(disp)) { |
| debug(" - device in use\n"); |
| return -EBUSY; |
| } |
| |
| disp_uc_plat->source_id = mux; |
| |
| ret = device_probe(disp); |
| if (ret) { |
| debug("%s: device '%s' display won't probe (ret=%d)\n", |
| __func__, dev->name, ret); |
| return ret; |
| } |
| |
| ret = display_read_timing(disp, &timing); |
| if (ret) { |
| debug("%s: Failed to read timings\n", __func__); |
| return ret; |
| } |
| |
| sunxi_de2_composer_init(); |
| sunxi_de2_mode_set(mux, &timing, 1 << l2bpp, fbbase, is_composite); |
| |
| ret = display_enable(disp, 1 << l2bpp, &timing); |
| if (ret) { |
| debug("%s: Failed to enable display\n", __func__); |
| return ret; |
| } |
| |
| uc_priv->xsize = timing.hactive.typ; |
| uc_priv->ysize = timing.vactive.typ; |
| uc_priv->bpix = l2bpp; |
| debug("fb=%lx, size=%d %d\n", fbbase, uc_priv->xsize, uc_priv->ysize); |
| |
| #ifdef CONFIG_EFI_LOADER |
| efi_add_memory_map(fbbase, |
| timing.hactive.typ * timing.vactive.typ * |
| (1 << l2bpp) / 8, |
| EFI_RESERVED_MEMORY_TYPE); |
| #endif |
| |
| return 0; |
| } |
| |
| static int sunxi_de2_probe(struct udevice *dev) |
| { |
| struct video_uc_platdata *plat = dev_get_uclass_platdata(dev); |
| struct udevice *disp; |
| int ret; |
| |
| /* Before relocation we don't need to do anything */ |
| if (!(gd->flags & GD_FLG_RELOC)) |
| return 0; |
| |
| ret = uclass_find_device_by_name(UCLASS_DISPLAY, |
| "sunxi_lcd", &disp); |
| if (!ret) { |
| int mux; |
| |
| mux = 0; |
| |
| ret = sunxi_de2_init(dev, plat->base, VIDEO_BPP32, disp, mux, |
| false); |
| if (!ret) { |
| video_set_flush_dcache(dev, 1); |
| return 0; |
| } |
| } |
| |
| debug("%s: lcd display not found (ret=%d)\n", __func__, ret); |
| |
| ret = uclass_find_device_by_name(UCLASS_DISPLAY, |
| "sunxi_dw_hdmi", &disp); |
| if (!ret) { |
| int mux; |
| if (IS_ENABLED(CONFIG_MACH_SUNXI_H3_H5)) |
| mux = 0; |
| else |
| mux = 1; |
| |
| ret = sunxi_de2_init(dev, plat->base, VIDEO_BPP32, disp, mux, |
| false); |
| if (!ret) { |
| video_set_flush_dcache(dev, 1); |
| return 0; |
| } |
| } |
| |
| debug("%s: hdmi display not found (ret=%d)\n", __func__, ret); |
| |
| ret = uclass_find_device_by_name(UCLASS_DISPLAY, |
| "sunxi_tve", &disp); |
| if (ret) { |
| debug("%s: tv not found (ret=%d)\n", __func__, ret); |
| return ret; |
| } |
| |
| ret = sunxi_de2_init(dev, plat->base, VIDEO_BPP32, disp, 1, true); |
| if (ret) |
| return ret; |
| |
| video_set_flush_dcache(dev, 1); |
| |
| return 0; |
| } |
| |
| static int sunxi_de2_bind(struct udevice *dev) |
| { |
| struct video_uc_platdata *plat = dev_get_uclass_platdata(dev); |
| |
| plat->size = LCD_MAX_WIDTH * LCD_MAX_HEIGHT * |
| (1 << LCD_MAX_LOG2_BPP) / 8; |
| |
| return 0; |
| } |
| |
| static const struct video_ops sunxi_de2_ops = { |
| }; |
| |
| U_BOOT_DRIVER(sunxi_de2) = { |
| .name = "sunxi_de2", |
| .id = UCLASS_VIDEO, |
| .ops = &sunxi_de2_ops, |
| .bind = sunxi_de2_bind, |
| .probe = sunxi_de2_probe, |
| .flags = DM_FLAG_PRE_RELOC, |
| }; |
| |
| U_BOOT_DEVICE(sunxi_de2) = { |
| .name = "sunxi_de2" |
| }; |
| |
| /* |
| * Simplefb support. |
| */ |
| #if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_VIDEO_DT_SIMPLEFB) |
| int sunxi_simplefb_setup(void *blob) |
| { |
| struct udevice *de2, *hdmi, *lcd; |
| struct video_priv *de2_priv; |
| struct video_uc_platdata *de2_plat; |
| int mux; |
| int offset, ret; |
| u64 start, size; |
| const char *pipeline = NULL; |
| |
| debug("Setting up simplefb\n"); |
| |
| if (IS_ENABLED(CONFIG_MACH_SUNXI_H3_H5)) |
| mux = 0; |
| else |
| mux = 1; |
| |
| /* Skip simplefb setting if DE2 / HDMI is not present */ |
| ret = uclass_find_device_by_name(UCLASS_VIDEO, |
| "sunxi_de2", &de2); |
| if (ret) { |
| debug("DE2 not present\n"); |
| return 0; |
| } else if (!device_active(de2)) { |
| debug("DE2 present but not probed\n"); |
| return 0; |
| } |
| |
| ret = uclass_find_device_by_name(UCLASS_DISPLAY, |
| "sunxi_dw_hdmi", &hdmi); |
| if (ret) { |
| debug("HDMI not present\n"); |
| } else if (device_active(hdmi)) { |
| if (mux == 0) |
| pipeline = "mixer0-lcd0-hdmi"; |
| else |
| pipeline = "mixer1-lcd1-hdmi"; |
| } else { |
| debug("HDMI present but not probed\n"); |
| } |
| |
| ret = uclass_find_device_by_name(UCLASS_DISPLAY, |
| "sunxi_lcd", &lcd); |
| if (ret) |
| debug("LCD not present\n"); |
| else if (device_active(lcd)) |
| pipeline = "mixer0-lcd0"; |
| else |
| debug("LCD present but not probed\n"); |
| |
| if (!pipeline) { |
| debug("No active display present\n"); |
| return 0; |
| } |
| |
| de2_priv = dev_get_uclass_priv(de2); |
| de2_plat = dev_get_uclass_platdata(de2); |
| |
| offset = sunxi_simplefb_fdt_match(blob, pipeline); |
| if (offset < 0) { |
| eprintf("Cannot setup simplefb: node not found\n"); |
| return 0; /* Keep older kernels working */ |
| } |
| |
| start = gd->bd->bi_dram[0].start; |
| size = de2_plat->base - start; |
| ret = fdt_fixup_memory_banks(blob, &start, &size, 1); |
| if (ret) { |
| eprintf("Cannot setup simplefb: Error reserving memory\n"); |
| return ret; |
| } |
| |
| ret = fdt_setup_simplefb_node(blob, offset, de2_plat->base, |
| de2_priv->xsize, de2_priv->ysize, |
| VNBYTES(de2_priv->bpix) * de2_priv->xsize, |
| "x8r8g8b8"); |
| if (ret) |
| eprintf("Cannot setup simplefb: Error setting properties\n"); |
| |
| return ret; |
| } |
| #endif /* CONFIG_OF_BOARD_SETUP && CONFIG_VIDEO_DT_SIMPLEFB */ |