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7b7ad5c3 SG |
1 | /* |
2 | * Copyright (c) 2015 Google, Inc | |
3 | * Copyright 2014 Rockchip Inc. | |
4 | * | |
5 | * SPDX-License-Identifier: GPL-2.0+ | |
6 | */ | |
7 | ||
8 | #include <common.h> | |
9 | #include <clk.h> | |
10 | #include <display.h> | |
11 | #include <dm.h> | |
12 | #include <edid.h> | |
13 | #include <regmap.h> | |
14 | #include <syscon.h> | |
15 | #include <video.h> | |
16 | #include <asm/gpio.h> | |
17 | #include <asm/hardware.h> | |
18 | #include <asm/io.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> | |
7b7ad5c3 SG |
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> | |
28 | ||
29 | DECLARE_GLOBAL_DATA_PTR; | |
30 | ||
31 | struct rk_vop_priv { | |
32 | struct rk3288_vop *regs; | |
33 | struct rk3288_grf *grf; | |
34 | }; | |
35 | ||
36 | void rkvop_enable(struct rk3288_vop *regs, ulong fbbase, | |
37 | int fb_bits_per_pixel, const struct display_timing *edid) | |
38 | { | |
39 | u32 lb_mode; | |
40 | u32 rgb_mode; | |
41 | u32 hactive = edid->hactive.typ; | |
42 | u32 vactive = edid->vactive.typ; | |
43 | ||
44 | writel(V_ACT_WIDTH(hactive - 1) | V_ACT_HEIGHT(vactive - 1), | |
45 | ®s->win0_act_info); | |
46 | ||
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), | |
49 | ®s->win0_dsp_st); | |
50 | ||
51 | writel(V_DSP_WIDTH(hactive - 1) | | |
52 | V_DSP_HEIGHT(vactive - 1), | |
53 | ®s->win0_dsp_info); | |
54 | ||
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)); | |
57 | ||
58 | switch (fb_bits_per_pixel) { | |
59 | case 16: | |
60 | rgb_mode = RGB565; | |
61 | writel(V_RGB565_VIRWIDTH(hactive), ®s->win0_vir); | |
62 | break; | |
63 | case 24: | |
64 | rgb_mode = RGB888; | |
65 | writel(V_RGB888_VIRWIDTH(hactive), ®s->win0_vir); | |
66 | break; | |
67 | case 32: | |
68 | default: | |
69 | rgb_mode = ARGB8888; | |
70 | writel(V_ARGB888_VIRWIDTH(hactive), ®s->win0_vir); | |
71 | break; | |
72 | } | |
73 | ||
74 | if (hactive > 2560) | |
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; | |
80 | else | |
81 | lb_mode = LB_RGB_1280X8; | |
82 | ||
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) | | |
86 | V_WIN0_EN(1)); | |
87 | ||
88 | writel(fbbase, ®s->win0_yrgb_mst); | |
89 | writel(0x01, ®s->reg_cfg_done); /* enable reg config */ | |
90 | } | |
91 | ||
92 | void rkvop_mode_set(struct rk3288_vop *regs, | |
93 | const struct display_timing *edid, enum vop_modes mode) | |
94 | { | |
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; | |
103 | uint flags; | |
85307835 | 104 | int mode_flags; |
7b7ad5c3 SG |
105 | |
106 | switch (mode) { | |
107 | case VOP_MODE_HDMI: | |
108 | clrsetbits_le32(®s->sys_ctrl, M_ALL_OUT_EN, | |
109 | V_HDMI_OUT_EN(1)); | |
110 | break; | |
111 | case VOP_MODE_EDP: | |
112 | default: | |
113 | clrsetbits_le32(®s->sys_ctrl, M_ALL_OUT_EN, | |
114 | V_EDP_OUT_EN(1)); | |
115 | break; | |
85307835 JC |
116 | case VOP_MODE_LVDS: |
117 | clrsetbits_le32(®s->sys_ctrl, M_ALL_OUT_EN, | |
118 | V_RGB_OUT_EN(1)); | |
119 | break; | |
9f819931 EG |
120 | case VOP_MODE_MIPI: |
121 | clrsetbits_le32(®s->sys_ctrl, M_ALL_OUT_EN, | |
122 | V_MIPI_OUT_EN(1)); | |
123 | break; | |
7b7ad5c3 SG |
124 | } |
125 | ||
85307835 JC |
126 | if (mode == VOP_MODE_HDMI || mode == VOP_MODE_EDP) |
127 | /* RGBaaa */ | |
128 | mode_flags = 15; | |
129 | else | |
130 | /* RGB888 */ | |
131 | mode_flags = 0; | |
132 | ||
133 | flags = V_DSP_OUT_MODE(mode_flags) | | |
7b7ad5c3 SG |
134 | V_DSP_HSYNC_POL(!!(edid->flags & DISPLAY_FLAGS_HSYNC_HIGH)) | |
135 | V_DSP_VSYNC_POL(!!(edid->flags & DISPLAY_FLAGS_VSYNC_HIGH)); | |
136 | ||
137 | clrsetbits_le32(®s->dsp_ctrl0, | |
138 | M_DSP_OUT_MODE | M_DSP_VSYNC_POL | M_DSP_HSYNC_POL, | |
139 | flags); | |
140 | ||
141 | writel(V_HSYNC(hsync_len) | | |
142 | V_HORPRD(hsync_len + hback_porch + hactive + hfront_porch), | |
143 | ®s->dsp_htotal_hs_end); | |
144 | ||
145 | writel(V_HEAP(hsync_len + hback_porch + hactive) | | |
146 | V_HASP(hsync_len + hback_porch), | |
147 | ®s->dsp_hact_st_end); | |
148 | ||
149 | writel(V_VSYNC(vsync_len) | | |
150 | V_VERPRD(vsync_len + vback_porch + vactive + vfront_porch), | |
151 | ®s->dsp_vtotal_vs_end); | |
152 | ||
153 | writel(V_VAEP(vsync_len + vback_porch + vactive)| | |
154 | V_VASP(vsync_len + vback_porch), | |
155 | ®s->dsp_vact_st_end); | |
156 | ||
157 | writel(V_HEAP(hsync_len + hback_porch + hactive) | | |
158 | V_HASP(hsync_len + hback_porch), | |
159 | ®s->post_dsp_hact_info); | |
160 | ||
161 | writel(V_VAEP(vsync_len + vback_porch + vactive)| | |
162 | V_VASP(vsync_len + vback_porch), | |
163 | ®s->post_dsp_vact_info); | |
164 | ||
165 | writel(0x01, ®s->reg_cfg_done); /* enable reg config */ | |
166 | } | |
167 | ||
168 | /** | |
169 | * rk_display_init() - Try to enable the given display device | |
170 | * | |
171 | * This function performs many steps: | |
172 | * - Finds the display device being referenced by @ep_node | |
173 | * - Puts the VOP's ID into its uclass platform data | |
174 | * - Probes the device to set it up | |
175 | * - Reads the EDID timing information | |
176 | * - Sets up the VOP clocks, etc. for the selected pixel clock and display mode | |
177 | * - Enables the display (the display device handles this and will do different | |
178 | * things depending on the display type) | |
179 | * - Tells the uclass about the display resolution so that the console will | |
180 | * appear correctly | |
181 | * | |
182 | * @dev: VOP device that we want to connect to the display | |
183 | * @fbbase: Frame buffer address | |
184 | * @l2bpp Log2 of bits-per-pixels for the display | |
185 | * @ep_node: Device tree node to process - this is the offset of an endpoint | |
186 | * node within the VOP's 'port' list. | |
187 | * @return 0 if OK, -ve if something went wrong | |
188 | */ | |
189 | int rk_display_init(struct udevice *dev, ulong fbbase, | |
190 | enum video_log2_bpp l2bpp, int ep_node) | |
191 | { | |
192 | struct video_priv *uc_priv = dev_get_uclass_priv(dev); | |
193 | const void *blob = gd->fdt_blob; | |
194 | struct rk_vop_priv *priv = dev_get_priv(dev); | |
195 | int vop_id, remote_vop_id; | |
196 | struct rk3288_vop *regs = priv->regs; | |
197 | struct display_timing timing; | |
198 | struct udevice *disp; | |
199 | int ret, remote, i, offset; | |
200 | struct display_plat *disp_uc_plat; | |
135aa950 | 201 | struct clk clk; |
7b7ad5c3 SG |
202 | |
203 | vop_id = fdtdec_get_int(blob, ep_node, "reg", -1); | |
204 | debug("vop_id=%d\n", vop_id); | |
205 | remote = fdtdec_lookup_phandle(blob, ep_node, "remote-endpoint"); | |
206 | if (remote < 0) | |
207 | return -EINVAL; | |
208 | remote_vop_id = fdtdec_get_int(blob, remote, "reg", -1); | |
209 | debug("remote vop_id=%d\n", remote_vop_id); | |
210 | ||
211 | for (i = 0, offset = remote; i < 3 && offset > 0; i++) | |
212 | offset = fdt_parent_offset(blob, offset); | |
213 | if (offset < 0) { | |
214 | debug("%s: Invalid remote-endpoint position\n", dev->name); | |
215 | return -EINVAL; | |
216 | } | |
217 | ||
218 | ret = uclass_find_device_by_of_offset(UCLASS_DISPLAY, offset, &disp); | |
219 | if (ret) { | |
220 | debug("%s: device '%s' display not found (ret=%d)\n", __func__, | |
221 | dev->name, ret); | |
222 | return ret; | |
223 | } | |
224 | ||
225 | disp_uc_plat = dev_get_uclass_platdata(disp); | |
226 | debug("Found device '%s', disp_uc_priv=%p\n", disp->name, disp_uc_plat); | |
987a404a SG |
227 | if (display_in_use(disp)) { |
228 | debug(" - device in use\n"); | |
229 | return -EBUSY; | |
230 | } | |
231 | ||
7b7ad5c3 SG |
232 | disp_uc_plat->source_id = remote_vop_id; |
233 | disp_uc_plat->src_dev = dev; | |
234 | ||
235 | ret = device_probe(disp); | |
236 | if (ret) { | |
237 | debug("%s: device '%s' display won't probe (ret=%d)\n", | |
238 | __func__, dev->name, ret); | |
239 | return ret; | |
240 | } | |
241 | ||
242 | ret = display_read_timing(disp, &timing); | |
243 | if (ret) { | |
244 | debug("%s: Failed to read timings\n", __func__); | |
245 | return ret; | |
246 | } | |
247 | ||
9ed68260 | 248 | ret = clk_get_by_index(dev, 1, &clk); |
135aa950 SW |
249 | if (!ret) |
250 | ret = clk_set_rate(&clk, timing.pixelclock.typ); | |
e07e5bde | 251 | if (IS_ERR_VALUE(ret)) { |
7b7ad5c3 SG |
252 | debug("%s: Failed to set pixel clock: ret=%d\n", __func__, ret); |
253 | return ret; | |
254 | } | |
255 | ||
256 | rkvop_mode_set(regs, &timing, vop_id); | |
257 | ||
258 | rkvop_enable(regs, fbbase, 1 << l2bpp, &timing); | |
259 | ||
260 | ret = display_enable(disp, 1 << l2bpp, &timing); | |
261 | if (ret) | |
262 | return ret; | |
263 | ||
264 | uc_priv->xsize = timing.hactive.typ; | |
265 | uc_priv->ysize = timing.vactive.typ; | |
266 | uc_priv->bpix = l2bpp; | |
267 | debug("fb=%lx, size=%d %d\n", fbbase, uc_priv->xsize, uc_priv->ysize); | |
268 | ||
269 | return 0; | |
270 | } | |
271 | ||
272 | static int rk_vop_probe(struct udevice *dev) | |
273 | { | |
274 | struct video_uc_platdata *plat = dev_get_uclass_platdata(dev); | |
275 | const void *blob = gd->fdt_blob; | |
276 | struct rk_vop_priv *priv = dev_get_priv(dev); | |
277 | struct udevice *reg; | |
278 | int ret, port, node; | |
279 | ||
280 | /* Before relocation we don't need to do anything */ | |
281 | if (!(gd->flags & GD_FLG_RELOC)) | |
282 | return 0; | |
283 | ||
284 | priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF); | |
285 | priv->regs = (struct rk3288_vop *)dev_get_addr(dev); | |
286 | ||
287 | /* lcdc(vop) iodomain select 1.8V */ | |
288 | rk_setreg(&priv->grf->io_vsel, 1 << 0); | |
289 | ||
290 | /* | |
291 | * Try some common regulators. We should really get these from the | |
292 | * device tree somehow. | |
293 | */ | |
294 | ret = regulator_autoset_by_name("vcc18_lcd", ®); | |
295 | if (ret) | |
296 | debug("%s: Cannot autoset regulator vcc18_lcd\n", __func__); | |
297 | ret = regulator_autoset_by_name("VCC18_LCD", ®); | |
298 | if (ret) | |
299 | debug("%s: Cannot autoset regulator VCC18_LCD\n", __func__); | |
300 | ret = regulator_autoset_by_name("vdd10_lcd_pwren_h", ®); | |
301 | if (ret) { | |
302 | debug("%s: Cannot autoset regulator vdd10_lcd_pwren_h\n", | |
303 | __func__); | |
304 | } | |
305 | ret = regulator_autoset_by_name("vdd10_lcd", ®); | |
306 | if (ret) { | |
307 | debug("%s: Cannot autoset regulator vdd10_lcd\n", | |
308 | __func__); | |
309 | } | |
310 | ret = regulator_autoset_by_name("VDD10_LCD", ®); | |
311 | if (ret) { | |
312 | debug("%s: Cannot autoset regulator VDD10_LCD\n", | |
313 | __func__); | |
314 | } | |
315 | ret = regulator_autoset_by_name("vcc33_lcd", ®); | |
316 | if (ret) | |
317 | debug("%s: Cannot autoset regulator vcc33_lcd\n", __func__); | |
318 | ||
319 | /* | |
320 | * Try all the ports until we find one that works. In practice this | |
321 | * tries EDP first if available, then HDMI. | |
987a404a SG |
322 | * |
323 | * Note that rockchip_vop_set_clk() always uses NPLL as the source | |
324 | * clock so it is currently not possible to use more than one display | |
325 | * device simultaneously. | |
7b7ad5c3 | 326 | */ |
e160f7d4 | 327 | port = fdt_subnode_offset(blob, dev_of_offset(dev), "port"); |
7b7ad5c3 SG |
328 | if (port < 0) |
329 | return -EINVAL; | |
330 | for (node = fdt_first_subnode(blob, port); | |
331 | node > 0; | |
332 | node = fdt_next_subnode(blob, node)) { | |
333 | ret = rk_display_init(dev, plat->base, VIDEO_BPP16, node); | |
334 | if (ret) | |
335 | debug("Device failed: ret=%d\n", ret); | |
336 | if (!ret) | |
337 | break; | |
338 | } | |
b55e04a0 | 339 | video_set_flush_dcache(dev, 1); |
7b7ad5c3 SG |
340 | |
341 | return ret; | |
342 | } | |
343 | ||
344 | static int rk_vop_bind(struct udevice *dev) | |
345 | { | |
346 | struct video_uc_platdata *plat = dev_get_uclass_platdata(dev); | |
347 | ||
348 | plat->size = 1920 * 1080 * 2; | |
349 | ||
350 | return 0; | |
351 | } | |
352 | ||
353 | static const struct video_ops rk_vop_ops = { | |
354 | }; | |
355 | ||
356 | static const struct udevice_id rk_vop_ids[] = { | |
9f819931 EG |
357 | { .compatible = "rockchip,rk3399-vop-big" }, |
358 | { .compatible = "rockchip,rk3399-vop-lit" }, | |
7b7ad5c3 SG |
359 | { .compatible = "rockchip,rk3288-vop" }, |
360 | { } | |
361 | }; | |
362 | ||
363 | U_BOOT_DRIVER(rk_vop) = { | |
364 | .name = "rk_vop", | |
365 | .id = UCLASS_VIDEO, | |
366 | .of_match = rk_vop_ids, | |
367 | .ops = &rk_vop_ops, | |
368 | .bind = rk_vop_bind, | |
369 | .probe = rk_vop_probe, | |
370 | .priv_auto_alloc_size = sizeof(struct rk_vop_priv), | |
371 | }; |