2 * Allwinner DE2 display driver
4 * (C) Copyright 2017 Jernej Skrabec <jernej.skrabec@siol.net>
6 * SPDX-License-Identifier: GPL-2.0+
14 #include <asm/global_data.h>
16 #include <asm/arch/clock.h>
17 #include <asm/arch/display2.h>
18 #include <dm/device-internal.h>
19 #include <dm/uclass-internal.h>
21 DECLARE_GLOBAL_DATA_PTR;
24 /* Maximum LCD size we support */
26 LCD_MAX_HEIGHT = 2160,
27 LCD_MAX_LOG2_BPP = VIDEO_BPP32,
30 static void sunxi_de2_composer_init(void)
32 struct sunxi_ccm_reg * const ccm =
33 (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
35 #ifdef CONFIG_MACH_SUN50I
38 /* set SRAM for video use (A64 only) */
39 reg_value = readl(SUNXI_SRAMC_BASE + 0x04);
40 reg_value &= ~(0x01 << 24);
41 writel(reg_value, SUNXI_SRAMC_BASE + 0x04);
44 clock_set_pll10(432000000);
46 /* Set DE parent to pll10 */
47 clrsetbits_le32(&ccm->de_clk_cfg, CCM_DE2_CTRL_PLL_MASK,
50 /* Set ahb gating to pass */
51 setbits_le32(&ccm->ahb_reset1_cfg, 1 << AHB_RESET_OFFSET_DE);
52 setbits_le32(&ccm->ahb_gate1, 1 << AHB_GATE_OFFSET_DE);
55 setbits_le32(&ccm->de_clk_cfg, CCM_DE2_CTRL_GATE);
58 static void sunxi_de2_mode_set(int mux, const struct display_timing *mode,
59 int bpp, ulong address)
61 ulong de_mux_base = (mux == 0) ?
62 SUNXI_DE2_MUX0_BASE : SUNXI_DE2_MUX1_BASE;
63 struct de_clk * const de_clk_regs =
64 (struct de_clk *)(SUNXI_DE2_BASE);
65 struct de_glb * const de_glb_regs =
66 (struct de_glb *)(de_mux_base +
67 SUNXI_DE2_MUX_GLB_REGS);
68 struct de_bld * const de_bld_regs =
69 (struct de_bld *)(de_mux_base +
70 SUNXI_DE2_MUX_BLD_REGS);
71 struct de_ui * const de_ui_regs =
72 (struct de_ui *)(de_mux_base +
73 SUNXI_DE2_MUX_CHAN_REGS +
74 SUNXI_DE2_MUX_CHAN_SZ * 1);
75 u32 size = SUNXI_DE2_WH(mode->hactive.typ, mode->vactive.typ);
80 #ifdef CONFIG_MACH_SUN8I_H3
81 setbits_le32(&de_clk_regs->rst_cfg, (mux == 0) ? 1 : 4);
83 setbits_le32(&de_clk_regs->rst_cfg, BIT(mux));
85 setbits_le32(&de_clk_regs->gate_cfg, BIT(mux));
86 setbits_le32(&de_clk_regs->bus_cfg, BIT(mux));
88 clrbits_le32(&de_clk_regs->sel_cfg, 1);
90 writel(SUNXI_DE2_MUX_GLB_CTL_EN, &de_glb_regs->ctl);
91 writel(0, &de_glb_regs->status);
92 writel(1, &de_glb_regs->dbuff);
93 writel(size, &de_glb_regs->size);
95 for (channel = 0; channel < 4; channel++) {
96 void *ch = (void *)(de_mux_base + SUNXI_DE2_MUX_CHAN_REGS +
97 SUNXI_DE2_MUX_CHAN_SZ * channel);
98 memset(ch, 0, (channel == 0) ?
99 sizeof(struct de_vi) : sizeof(struct de_ui));
101 memset(de_bld_regs, 0, sizeof(struct de_bld));
103 writel(0x00000101, &de_bld_regs->fcolor_ctl);
105 writel(1, &de_bld_regs->route);
107 writel(0, &de_bld_regs->premultiply);
108 writel(0xff000000, &de_bld_regs->bkcolor);
110 writel(0x03010301, &de_bld_regs->bld_mode[0]);
112 writel(size, &de_bld_regs->output_size);
113 writel(mode->flags & DISPLAY_FLAGS_INTERLACED ? 2 : 0,
114 &de_bld_regs->out_ctl);
115 writel(0, &de_bld_regs->ck_ctl);
117 writel(0xff000000, &de_bld_regs->attr[0].fcolor);
118 writel(size, &de_bld_regs->attr[0].insize);
120 /* Disable all other units */
121 writel(0, de_mux_base + SUNXI_DE2_MUX_VSU_REGS);
122 writel(0, de_mux_base + SUNXI_DE2_MUX_GSU1_REGS);
123 writel(0, de_mux_base + SUNXI_DE2_MUX_GSU2_REGS);
124 writel(0, de_mux_base + SUNXI_DE2_MUX_GSU3_REGS);
125 writel(0, de_mux_base + SUNXI_DE2_MUX_FCE_REGS);
126 writel(0, de_mux_base + SUNXI_DE2_MUX_BWS_REGS);
127 writel(0, de_mux_base + SUNXI_DE2_MUX_LTI_REGS);
128 writel(0, de_mux_base + SUNXI_DE2_MUX_PEAK_REGS);
129 writel(0, de_mux_base + SUNXI_DE2_MUX_ASE_REGS);
130 writel(0, de_mux_base + SUNXI_DE2_MUX_FCC_REGS);
131 writel(0, de_mux_base + SUNXI_DE2_MUX_DCSC_REGS);
135 format = SUNXI_DE2_UI_CFG_ATTR_FMT(SUNXI_DE2_FORMAT_RGB_565);
139 format = SUNXI_DE2_UI_CFG_ATTR_FMT(SUNXI_DE2_FORMAT_XRGB_8888);
143 writel(SUNXI_DE2_UI_CFG_ATTR_EN | format, &de_ui_regs->cfg[0].attr);
144 writel(size, &de_ui_regs->cfg[0].size);
145 writel(0, &de_ui_regs->cfg[0].coord);
146 writel((bpp / 8) * mode->hactive.typ, &de_ui_regs->cfg[0].pitch);
147 writel(address, &de_ui_regs->cfg[0].top_laddr);
148 writel(size, &de_ui_regs->ovl_size);
151 writel(1, &de_glb_regs->dbuff);
154 static int sunxi_de2_init(struct udevice *dev, ulong fbbase,
155 enum video_log2_bpp l2bpp,
156 struct udevice *disp, int mux)
158 struct video_priv *uc_priv = dev_get_uclass_priv(dev);
159 struct display_timing timing;
160 struct display_plat *disp_uc_plat;
163 disp_uc_plat = dev_get_uclass_platdata(disp);
164 debug("Using device '%s', disp_uc_priv=%p\n", disp->name, disp_uc_plat);
165 if (display_in_use(disp)) {
166 debug(" - device in use\n");
170 disp_uc_plat->source_id = mux;
172 ret = device_probe(disp);
174 debug("%s: device '%s' display won't probe (ret=%d)\n",
175 __func__, dev->name, ret);
179 ret = display_read_timing(disp, &timing);
181 debug("%s: Failed to read timings\n", __func__);
185 sunxi_de2_composer_init();
186 sunxi_de2_mode_set(mux, &timing, 1 << l2bpp, fbbase);
188 ret = display_enable(disp, 1 << l2bpp, &timing);
190 debug("%s: Failed to enable display\n", __func__);
194 uc_priv->xsize = timing.hactive.typ;
195 uc_priv->ysize = timing.vactive.typ;
196 uc_priv->bpix = l2bpp;
197 debug("fb=%lx, size=%d %d\n", fbbase, uc_priv->xsize, uc_priv->ysize);
202 static int sunxi_de2_probe(struct udevice *dev)
204 struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
205 struct udevice *disp;
209 /* Before relocation we don't need to do anything */
210 if (!(gd->flags & GD_FLG_RELOC))
213 ret = uclass_find_device_by_name(UCLASS_DISPLAY,
214 "sunxi_dw_hdmi", &disp);
216 debug("%s: hdmi display not found (ret=%d)\n", __func__, ret);
220 if (IS_ENABLED(CONFIG_MACH_SUNXI_H3_H5))
225 ret = sunxi_de2_init(dev, plat->base, VIDEO_BPP32, disp, mux);
229 video_set_flush_dcache(dev, 1);
234 static int sunxi_de2_bind(struct udevice *dev)
236 struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
238 plat->size = LCD_MAX_WIDTH * LCD_MAX_HEIGHT *
239 (1 << LCD_MAX_LOG2_BPP) / 8;
244 static const struct video_ops sunxi_de2_ops = {
247 U_BOOT_DRIVER(sunxi_de2) = {
250 .ops = &sunxi_de2_ops,
251 .bind = sunxi_de2_bind,
252 .probe = sunxi_de2_probe,
253 .flags = DM_FLAG_PRE_RELOC,
256 U_BOOT_DEVICE(sunxi_de2) = {