2 * Copyright (c) 2015 Google, Inc
3 * Copyright 2014 Rockchip Inc.
5 * SPDX-License-Identifier: GPL-2.0+
17 #include <asm/hardware.h>
19 #include <asm/arch/clock.h>
20 #include <asm/arch/cru_rk3288.h>
21 #include <asm/arch/grf_rk3288.h>
22 #include <asm/arch/edp_rk3288.h>
23 #include <asm/arch/vop_rk3288.h>
24 #include <dm/device-internal.h>
25 #include <dm/uclass-internal.h>
26 #include <dt-bindings/clock/rk3288-cru.h>
27 #include <power/regulator.h>
29 DECLARE_GLOBAL_DATA_PTR;
32 struct rk3288_vop *regs;
33 struct rk3288_grf *grf;
36 void rkvop_enable(struct rk3288_vop *regs, ulong fbbase,
37 int fb_bits_per_pixel, const struct display_timing *edid)
41 u32 hactive = edid->hactive.typ;
42 u32 vactive = edid->vactive.typ;
44 writel(V_ACT_WIDTH(hactive - 1) | V_ACT_HEIGHT(vactive - 1),
45 ®s->win0_act_info);
47 writel(V_DSP_XST(edid->hsync_len.typ + edid->hback_porch.typ) |
48 V_DSP_YST(edid->vsync_len.typ + edid->vback_porch.typ),
51 writel(V_DSP_WIDTH(hactive - 1) |
52 V_DSP_HEIGHT(vactive - 1),
53 ®s->win0_dsp_info);
55 clrsetbits_le32(®s->win0_color_key, M_WIN0_KEY_EN | M_WIN0_KEY_COLOR,
56 V_WIN0_KEY_EN(0) | V_WIN0_KEY_COLOR(0));
58 switch (fb_bits_per_pixel) {
61 writel(V_RGB565_VIRWIDTH(hactive), ®s->win0_vir);
65 writel(V_RGB888_VIRWIDTH(hactive), ®s->win0_vir);
70 writel(V_ARGB888_VIRWIDTH(hactive), ®s->win0_vir);
75 lb_mode = LB_RGB_3840X2;
76 else if (hactive > 1920)
77 lb_mode = LB_RGB_2560X4;
78 else if (hactive > 1280)
79 lb_mode = LB_RGB_1920X5;
81 lb_mode = LB_RGB_1280X8;
83 clrsetbits_le32(®s->win0_ctrl0,
84 M_WIN0_LB_MODE | M_WIN0_DATA_FMT | M_WIN0_EN,
85 V_WIN0_LB_MODE(lb_mode) | V_WIN0_DATA_FMT(rgb_mode) |
88 writel(fbbase, ®s->win0_yrgb_mst);
89 writel(0x01, ®s->reg_cfg_done); /* enable reg config */
92 void rkvop_mode_set(struct rk3288_vop *regs,
93 const struct display_timing *edid, enum vop_modes mode)
95 u32 hactive = edid->hactive.typ;
96 u32 vactive = edid->vactive.typ;
97 u32 hsync_len = edid->hsync_len.typ;
98 u32 hback_porch = edid->hback_porch.typ;
99 u32 vsync_len = edid->vsync_len.typ;
100 u32 vback_porch = edid->vback_porch.typ;
101 u32 hfront_porch = edid->hfront_porch.typ;
102 u32 vfront_porch = edid->vfront_porch.typ;
108 clrsetbits_le32(®s->sys_ctrl, M_ALL_OUT_EN,
113 clrsetbits_le32(®s->sys_ctrl, M_ALL_OUT_EN,
117 clrsetbits_le32(®s->sys_ctrl, M_ALL_OUT_EN,
122 if (mode == VOP_MODE_HDMI || mode == VOP_MODE_EDP)
129 flags = V_DSP_OUT_MODE(mode_flags) |
130 V_DSP_HSYNC_POL(!!(edid->flags & DISPLAY_FLAGS_HSYNC_HIGH)) |
131 V_DSP_VSYNC_POL(!!(edid->flags & DISPLAY_FLAGS_VSYNC_HIGH));
133 clrsetbits_le32(®s->dsp_ctrl0,
134 M_DSP_OUT_MODE | M_DSP_VSYNC_POL | M_DSP_HSYNC_POL,
137 writel(V_HSYNC(hsync_len) |
138 V_HORPRD(hsync_len + hback_porch + hactive + hfront_porch),
139 ®s->dsp_htotal_hs_end);
141 writel(V_HEAP(hsync_len + hback_porch + hactive) |
142 V_HASP(hsync_len + hback_porch),
143 ®s->dsp_hact_st_end);
145 writel(V_VSYNC(vsync_len) |
146 V_VERPRD(vsync_len + vback_porch + vactive + vfront_porch),
147 ®s->dsp_vtotal_vs_end);
149 writel(V_VAEP(vsync_len + vback_porch + vactive)|
150 V_VASP(vsync_len + vback_porch),
151 ®s->dsp_vact_st_end);
153 writel(V_HEAP(hsync_len + hback_porch + hactive) |
154 V_HASP(hsync_len + hback_porch),
155 ®s->post_dsp_hact_info);
157 writel(V_VAEP(vsync_len + vback_porch + vactive)|
158 V_VASP(vsync_len + vback_porch),
159 ®s->post_dsp_vact_info);
161 writel(0x01, ®s->reg_cfg_done); /* enable reg config */
165 * rk_display_init() - Try to enable the given display device
167 * This function performs many steps:
168 * - Finds the display device being referenced by @ep_node
169 * - Puts the VOP's ID into its uclass platform data
170 * - Probes the device to set it up
171 * - Reads the EDID timing information
172 * - Sets up the VOP clocks, etc. for the selected pixel clock and display mode
173 * - Enables the display (the display device handles this and will do different
174 * things depending on the display type)
175 * - Tells the uclass about the display resolution so that the console will
178 * @dev: VOP device that we want to connect to the display
179 * @fbbase: Frame buffer address
180 * @l2bpp Log2 of bits-per-pixels for the display
181 * @ep_node: Device tree node to process - this is the offset of an endpoint
182 * node within the VOP's 'port' list.
183 * @return 0 if OK, -ve if something went wrong
185 int rk_display_init(struct udevice *dev, ulong fbbase,
186 enum video_log2_bpp l2bpp, int ep_node)
188 struct video_priv *uc_priv = dev_get_uclass_priv(dev);
189 const void *blob = gd->fdt_blob;
190 struct rk_vop_priv *priv = dev_get_priv(dev);
191 int vop_id, remote_vop_id;
192 struct rk3288_vop *regs = priv->regs;
193 struct display_timing timing;
194 struct udevice *disp;
195 int ret, remote, i, offset;
196 struct display_plat *disp_uc_plat;
199 vop_id = fdtdec_get_int(blob, ep_node, "reg", -1);
200 debug("vop_id=%d\n", vop_id);
201 remote = fdtdec_lookup_phandle(blob, ep_node, "remote-endpoint");
204 remote_vop_id = fdtdec_get_int(blob, remote, "reg", -1);
205 debug("remote vop_id=%d\n", remote_vop_id);
207 for (i = 0, offset = remote; i < 3 && offset > 0; i++)
208 offset = fdt_parent_offset(blob, offset);
210 debug("%s: Invalid remote-endpoint position\n", dev->name);
214 ret = uclass_find_device_by_of_offset(UCLASS_DISPLAY, offset, &disp);
216 debug("%s: device '%s' display not found (ret=%d)\n", __func__,
221 disp_uc_plat = dev_get_uclass_platdata(disp);
222 debug("Found device '%s', disp_uc_priv=%p\n", disp->name, disp_uc_plat);
223 if (display_in_use(disp)) {
224 debug(" - device in use\n");
228 disp_uc_plat->source_id = remote_vop_id;
229 disp_uc_plat->src_dev = dev;
231 ret = device_probe(disp);
233 debug("%s: device '%s' display won't probe (ret=%d)\n",
234 __func__, dev->name, ret);
238 ret = display_read_timing(disp, &timing);
240 debug("%s: Failed to read timings\n", __func__);
244 ret = clk_get_by_index(dev, 1, &clk);
246 ret = clk_set_rate(&clk, timing.pixelclock.typ);
247 if (IS_ERR_VALUE(ret)) {
248 debug("%s: Failed to set pixel clock: ret=%d\n", __func__, ret);
252 rkvop_mode_set(regs, &timing, vop_id);
254 rkvop_enable(regs, fbbase, 1 << l2bpp, &timing);
256 ret = display_enable(disp, 1 << l2bpp, &timing);
260 uc_priv->xsize = timing.hactive.typ;
261 uc_priv->ysize = timing.vactive.typ;
262 uc_priv->bpix = l2bpp;
263 debug("fb=%lx, size=%d %d\n", fbbase, uc_priv->xsize, uc_priv->ysize);
268 static int rk_vop_probe(struct udevice *dev)
270 struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
271 const void *blob = gd->fdt_blob;
272 struct rk_vop_priv *priv = dev_get_priv(dev);
276 /* Before relocation we don't need to do anything */
277 if (!(gd->flags & GD_FLG_RELOC))
280 priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
281 priv->regs = (struct rk3288_vop *)dev_get_addr(dev);
283 /* lcdc(vop) iodomain select 1.8V */
284 rk_setreg(&priv->grf->io_vsel, 1 << 0);
287 * Try some common regulators. We should really get these from the
288 * device tree somehow.
290 ret = regulator_autoset_by_name("vcc18_lcd", ®);
292 debug("%s: Cannot autoset regulator vcc18_lcd\n", __func__);
293 ret = regulator_autoset_by_name("VCC18_LCD", ®);
295 debug("%s: Cannot autoset regulator VCC18_LCD\n", __func__);
296 ret = regulator_autoset_by_name("vdd10_lcd_pwren_h", ®);
298 debug("%s: Cannot autoset regulator vdd10_lcd_pwren_h\n",
301 ret = regulator_autoset_by_name("vdd10_lcd", ®);
303 debug("%s: Cannot autoset regulator vdd10_lcd\n",
306 ret = regulator_autoset_by_name("VDD10_LCD", ®);
308 debug("%s: Cannot autoset regulator VDD10_LCD\n",
311 ret = regulator_autoset_by_name("vcc33_lcd", ®);
313 debug("%s: Cannot autoset regulator vcc33_lcd\n", __func__);
316 * Try all the ports until we find one that works. In practice this
317 * tries EDP first if available, then HDMI.
319 * Note that rockchip_vop_set_clk() always uses NPLL as the source
320 * clock so it is currently not possible to use more than one display
321 * device simultaneously.
323 port = fdt_subnode_offset(blob, dev_of_offset(dev), "port");
326 for (node = fdt_first_subnode(blob, port);
328 node = fdt_next_subnode(blob, node)) {
329 ret = rk_display_init(dev, plat->base, VIDEO_BPP16, node);
331 debug("Device failed: ret=%d\n", ret);
335 video_set_flush_dcache(dev, 1);
340 static int rk_vop_bind(struct udevice *dev)
342 struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
344 plat->size = 1920 * 1080 * 2;
349 static const struct video_ops rk_vop_ops = {
352 static const struct udevice_id rk_vop_ids[] = {
353 { .compatible = "rockchip,rk3288-vop" },
357 U_BOOT_DRIVER(rk_vop) = {
360 .of_match = rk_vop_ids,
363 .probe = rk_vop_probe,
364 .priv_auto_alloc_size = sizeof(struct rk_vop_priv),