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/edp_rk3288.h>
21 #include <asm/arch/vop_rk3288.h>
22 #include <dm/device-internal.h>
23 #include <dm/uclass-internal.h>
24 #include <power/regulator.h>
27 DECLARE_GLOBAL_DATA_PTR;
36 static void rkvop_enable(struct rk3288_vop *regs, ulong fbbase,
37 int fb_bits_per_pixel,
38 const struct display_timing *edid)
42 u32 hactive = edid->hactive.typ;
43 u32 vactive = edid->vactive.typ;
45 writel(V_ACT_WIDTH(hactive - 1) | V_ACT_HEIGHT(vactive - 1),
46 ®s->win0_act_info);
48 writel(V_DSP_XST(edid->hsync_len.typ + edid->hback_porch.typ) |
49 V_DSP_YST(edid->vsync_len.typ + edid->vback_porch.typ),
52 writel(V_DSP_WIDTH(hactive - 1) |
53 V_DSP_HEIGHT(vactive - 1),
54 ®s->win0_dsp_info);
56 clrsetbits_le32(®s->win0_color_key, M_WIN0_KEY_EN | M_WIN0_KEY_COLOR,
57 V_WIN0_KEY_EN(0) | V_WIN0_KEY_COLOR(0));
59 switch (fb_bits_per_pixel) {
62 writel(V_RGB565_VIRWIDTH(hactive), ®s->win0_vir);
66 writel(V_RGB888_VIRWIDTH(hactive), ®s->win0_vir);
71 writel(V_ARGB888_VIRWIDTH(hactive), ®s->win0_vir);
76 lb_mode = LB_RGB_3840X2;
77 else if (hactive > 1920)
78 lb_mode = LB_RGB_2560X4;
79 else if (hactive > 1280)
80 lb_mode = LB_RGB_1920X5;
82 lb_mode = LB_RGB_1280X8;
84 clrsetbits_le32(®s->win0_ctrl0,
85 M_WIN0_LB_MODE | M_WIN0_DATA_FMT | M_WIN0_EN,
86 V_WIN0_LB_MODE(lb_mode) | V_WIN0_DATA_FMT(rgb_mode) |
89 writel(fbbase, ®s->win0_yrgb_mst);
90 writel(0x01, ®s->reg_cfg_done); /* enable reg config */
93 static void rkvop_set_pin_polarity(struct udevice *dev,
94 enum vop_modes mode, u32 polarity)
96 struct rkvop_driverdata *ops =
97 (struct rkvop_driverdata *)dev_get_driver_data(dev);
99 if (ops->set_pin_polarity)
100 ops->set_pin_polarity(dev, mode, polarity);
103 static void rkvop_enable_output(struct udevice *dev, enum vop_modes mode)
105 struct rk_vop_priv *priv = dev_get_priv(dev);
106 struct rk3288_vop *regs = priv->regs;
110 clrsetbits_le32(®s->sys_ctrl, M_ALL_OUT_EN,
115 clrsetbits_le32(®s->sys_ctrl, M_ALL_OUT_EN,
120 clrsetbits_le32(®s->sys_ctrl, M_ALL_OUT_EN,
125 clrsetbits_le32(®s->sys_ctrl, M_ALL_OUT_EN,
130 debug("%s: unsupported output mode %x\n", __func__, mode);
134 static void rkvop_mode_set(struct udevice *dev,
135 const struct display_timing *edid,
138 struct rk_vop_priv *priv = dev_get_priv(dev);
139 struct rk3288_vop *regs = priv->regs;
140 struct rkvop_driverdata *data =
141 (struct rkvop_driverdata *)dev_get_driver_data(dev);
143 u32 hactive = edid->hactive.typ;
144 u32 vactive = edid->vactive.typ;
145 u32 hsync_len = edid->hsync_len.typ;
146 u32 hback_porch = edid->hback_porch.typ;
147 u32 vsync_len = edid->vsync_len.typ;
148 u32 vback_porch = edid->vback_porch.typ;
149 u32 hfront_porch = edid->hfront_porch.typ;
150 u32 vfront_porch = edid->vfront_porch.typ;
154 pin_polarity = BIT(DCLK_INVERT);
155 if (edid->flags & DISPLAY_FLAGS_HSYNC_HIGH)
156 pin_polarity |= BIT(HSYNC_POSITIVE);
157 if (edid->flags & DISPLAY_FLAGS_VSYNC_HIGH)
158 pin_polarity |= BIT(VSYNC_POSITIVE);
160 rkvop_set_pin_polarity(dev, mode, pin_polarity);
161 rkvop_enable_output(dev, mode);
163 mode_flags = 0; /* RGB888 */
164 if ((data->features & VOP_FEATURE_OUTPUT_10BIT) &&
165 (mode == VOP_MODE_HDMI || mode == VOP_MODE_EDP))
166 mode_flags = 15; /* RGBaaa */
168 clrsetbits_le32(®s->dsp_ctrl0, M_DSP_OUT_MODE,
169 V_DSP_OUT_MODE(mode_flags));
171 writel(V_HSYNC(hsync_len) |
172 V_HORPRD(hsync_len + hback_porch + hactive + hfront_porch),
173 ®s->dsp_htotal_hs_end);
175 writel(V_HEAP(hsync_len + hback_porch + hactive) |
176 V_HASP(hsync_len + hback_porch),
177 ®s->dsp_hact_st_end);
179 writel(V_VSYNC(vsync_len) |
180 V_VERPRD(vsync_len + vback_porch + vactive + vfront_porch),
181 ®s->dsp_vtotal_vs_end);
183 writel(V_VAEP(vsync_len + vback_porch + vactive)|
184 V_VASP(vsync_len + vback_porch),
185 ®s->dsp_vact_st_end);
187 writel(V_HEAP(hsync_len + hback_porch + hactive) |
188 V_HASP(hsync_len + hback_porch),
189 ®s->post_dsp_hact_info);
191 writel(V_VAEP(vsync_len + vback_porch + vactive)|
192 V_VASP(vsync_len + vback_porch),
193 ®s->post_dsp_vact_info);
195 writel(0x01, ®s->reg_cfg_done); /* enable reg config */
199 * rk_display_init() - Try to enable the given display device
201 * This function performs many steps:
202 * - Finds the display device being referenced by @ep_node
203 * - Puts the VOP's ID into its uclass platform data
204 * - Probes the device to set it up
205 * - Reads the EDID timing information
206 * - Sets up the VOP clocks, etc. for the selected pixel clock and display mode
207 * - Enables the display (the display device handles this and will do different
208 * things depending on the display type)
209 * - Tells the uclass about the display resolution so that the console will
212 * @dev: VOP device that we want to connect to the display
213 * @fbbase: Frame buffer address
214 * @ep_node: Device tree node to process - this is the offset of an endpoint
215 * node within the VOP's 'port' list.
216 * @return 0 if OK, -ve if something went wrong
218 static int rk_display_init(struct udevice *dev, ulong fbbase, int ep_node)
220 struct video_priv *uc_priv = dev_get_uclass_priv(dev);
221 const void *blob = gd->fdt_blob;
222 struct rk_vop_priv *priv = dev_get_priv(dev);
223 int vop_id, remote_vop_id;
224 struct rk3288_vop *regs = priv->regs;
225 struct display_timing timing;
226 struct udevice *disp;
227 int ret, remote, i, offset;
228 struct display_plat *disp_uc_plat;
230 enum video_log2_bpp l2bpp;
232 vop_id = fdtdec_get_int(blob, ep_node, "reg", -1);
233 debug("vop_id=%d\n", vop_id);
234 remote = fdtdec_lookup_phandle(blob, ep_node, "remote-endpoint");
237 remote_vop_id = fdtdec_get_int(blob, remote, "reg", -1);
238 debug("remote vop_id=%d\n", remote_vop_id);
240 for (i = 0, offset = remote; i < 3 && offset > 0; i++)
241 offset = fdt_parent_offset(blob, offset);
243 debug("%s: Invalid remote-endpoint position\n", dev->name);
247 ret = uclass_find_device_by_of_offset(UCLASS_DISPLAY, offset, &disp);
249 debug("%s: device '%s' display not found (ret=%d)\n", __func__,
254 disp_uc_plat = dev_get_uclass_platdata(disp);
255 debug("Found device '%s', disp_uc_priv=%p\n", disp->name, disp_uc_plat);
256 if (display_in_use(disp)) {
257 debug(" - device in use\n");
261 disp_uc_plat->source_id = remote_vop_id;
262 disp_uc_plat->src_dev = dev;
264 ret = device_probe(disp);
266 debug("%s: device '%s' display won't probe (ret=%d)\n",
267 __func__, dev->name, ret);
271 ret = display_read_timing(disp, &timing);
273 debug("%s: Failed to read timings\n", __func__);
277 ret = clk_get_by_index(dev, 1, &clk);
279 ret = clk_set_rate(&clk, timing.pixelclock.typ);
280 if (IS_ERR_VALUE(ret)) {
281 debug("%s: Failed to set pixel clock: ret=%d\n", __func__, ret);
285 /* Set bitwidth for vop display according to vop mode */
299 rkvop_mode_set(dev, &timing, vop_id);
300 rkvop_enable(regs, fbbase, 1 << l2bpp, &timing);
302 ret = display_enable(disp, 1 << l2bpp, &timing);
306 uc_priv->xsize = timing.hactive.typ;
307 uc_priv->ysize = timing.vactive.typ;
308 uc_priv->bpix = l2bpp;
309 debug("fb=%lx, size=%d %d\n", fbbase, uc_priv->xsize, uc_priv->ysize);
314 void rk_vop_probe_regulators(struct udevice *dev,
315 const char * const *names, int cnt)
321 for (i = 0; i < cnt; ++i) {
323 debug("%s: probing regulator '%s'\n", dev->name, name);
325 ret = regulator_autoset_by_name(name, ®);
327 ret = regulator_set_enable(reg, true);
331 int rk_vop_probe(struct udevice *dev)
333 struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
334 const void *blob = gd->fdt_blob;
335 struct rk_vop_priv *priv = dev_get_priv(dev);
339 /* Before relocation we don't need to do anything */
340 if (!(gd->flags & GD_FLG_RELOC))
343 priv->regs = (struct rk3288_vop *)devfdt_get_addr(dev);
346 * Try all the ports until we find one that works. In practice this
347 * tries EDP first if available, then HDMI.
349 * Note that rockchip_vop_set_clk() always uses NPLL as the source
350 * clock so it is currently not possible to use more than one display
351 * device simultaneously.
353 port = fdt_subnode_offset(blob, dev_of_offset(dev), "port");
356 for (node = fdt_first_subnode(blob, port);
358 node = fdt_next_subnode(blob, node)) {
359 ret = rk_display_init(dev, plat->base, node);
361 debug("Device failed: ret=%d\n", ret);
365 video_set_flush_dcache(dev, 1);
370 int rk_vop_bind(struct udevice *dev)
372 struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
374 plat->size = 4 * (CONFIG_VIDEO_ROCKCHIP_MAX_XRES *
375 CONFIG_VIDEO_ROCKCHIP_MAX_YRES);