1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 2021 MediaTek Inc. 4 */ 5 6 #include <drm/drm_fourcc.h> 7 #include <drm/drm_framebuffer.h> 8 #include <linux/clk.h> 9 #include <linux/component.h> 10 #include <linux/of.h> 11 #include <linux/of_address.h> 12 #include <linux/platform_device.h> 13 #include <linux/reset.h> 14 #include <linux/soc/mediatek/mtk-cmdq.h> 15 #include <linux/soc/mediatek/mtk-mmsys.h> 16 17 #include "mtk_drm_crtc.h" 18 #include "mtk_drm_ddp_comp.h" 19 #include "mtk_drm_drv.h" 20 #include "mtk_ethdr.h" 21 22 #define MIX_INTEN 0x4 23 #define MIX_FME_CPL_INTEN BIT(1) 24 #define MIX_INTSTA 0x8 25 #define MIX_EN 0xc 26 #define MIX_RST 0x14 27 #define MIX_ROI_SIZE 0x18 28 #define MIX_DATAPATH_CON 0x1c 29 #define OUTPUT_NO_RND BIT(3) 30 #define SOURCE_RGB_SEL BIT(7) 31 #define BACKGROUND_RELAY (4 << 9) 32 #define MIX_ROI_BGCLR 0x20 33 #define BGCLR_BLACK 0xff000000 34 #define MIX_SRC_CON 0x24 35 #define MIX_SRC_L0_EN BIT(0) 36 #define MIX_L_SRC_CON(n) (0x28 + 0x18 * (n)) 37 #define NON_PREMULTI_SOURCE (2 << 12) 38 #define MIX_L_SRC_SIZE(n) (0x30 + 0x18 * (n)) 39 #define MIX_L_SRC_OFFSET(n) (0x34 + 0x18 * (n)) 40 #define MIX_FUNC_DCM0 0x120 41 #define MIX_FUNC_DCM1 0x124 42 #define MIX_FUNC_DCM_ENABLE 0xffffffff 43 44 #define HDR_VDO_FE_0804_HDR_DM_FE 0x804 45 #define HDR_VDO_FE_0804_BYPASS_ALL 0xfd 46 #define HDR_GFX_FE_0204_GFX_HDR_FE 0x204 47 #define HDR_GFX_FE_0204_BYPASS_ALL 0xfd 48 #define HDR_VDO_BE_0204_VDO_DM_BE 0x204 49 #define HDR_VDO_BE_0204_BYPASS_ALL 0x7e 50 51 #define MIXER_INX_MODE_BYPASS 0 52 #define MIXER_INX_MODE_EVEN_EXTEND 1 53 #define DEFAULT_9BIT_ALPHA 0x100 54 #define MIXER_ALPHA_AEN BIT(8) 55 #define MIXER_ALPHA 0xff 56 #define ETHDR_CLK_NUM 13 57 58 enum mtk_ethdr_comp_id { 59 ETHDR_MIXER, 60 ETHDR_VDO_FE0, 61 ETHDR_VDO_FE1, 62 ETHDR_GFX_FE0, 63 ETHDR_GFX_FE1, 64 ETHDR_VDO_BE, 65 ETHDR_ADL_DS, 66 ETHDR_ID_MAX 67 }; 68 69 struct mtk_ethdr_comp { 70 struct device *dev; 71 void __iomem *regs; 72 struct cmdq_client_reg cmdq_base; 73 }; 74 75 struct mtk_ethdr { 76 struct mtk_ethdr_comp ethdr_comp[ETHDR_ID_MAX]; 77 struct clk_bulk_data ethdr_clk[ETHDR_CLK_NUM]; 78 struct device *mmsys_dev; 79 void (*vblank_cb)(void *data); 80 void *vblank_cb_data; 81 int irq; 82 struct reset_control *reset_ctl; 83 }; 84 85 static const char * const ethdr_clk_str[] = { 86 "ethdr_top", 87 "mixer", 88 "vdo_fe0", 89 "vdo_fe1", 90 "gfx_fe0", 91 "gfx_fe1", 92 "vdo_be", 93 "adl_ds", 94 "vdo_fe0_async", 95 "vdo_fe1_async", 96 "gfx_fe0_async", 97 "gfx_fe1_async", 98 "vdo_be_async", 99 }; 100 101 void mtk_ethdr_register_vblank_cb(struct device *dev, 102 void (*vblank_cb)(void *), 103 void *vblank_cb_data) 104 { 105 struct mtk_ethdr *priv = dev_get_drvdata(dev); 106 107 priv->vblank_cb = vblank_cb; 108 priv->vblank_cb_data = vblank_cb_data; 109 } 110 111 void mtk_ethdr_unregister_vblank_cb(struct device *dev) 112 { 113 struct mtk_ethdr *priv = dev_get_drvdata(dev); 114 115 priv->vblank_cb = NULL; 116 priv->vblank_cb_data = NULL; 117 } 118 119 void mtk_ethdr_enable_vblank(struct device *dev) 120 { 121 struct mtk_ethdr *priv = dev_get_drvdata(dev); 122 123 writel(MIX_FME_CPL_INTEN, priv->ethdr_comp[ETHDR_MIXER].regs + MIX_INTEN); 124 } 125 126 void mtk_ethdr_disable_vblank(struct device *dev) 127 { 128 struct mtk_ethdr *priv = dev_get_drvdata(dev); 129 130 writel(0x0, priv->ethdr_comp[ETHDR_MIXER].regs + MIX_INTEN); 131 } 132 133 static irqreturn_t mtk_ethdr_irq_handler(int irq, void *dev_id) 134 { 135 struct mtk_ethdr *priv = dev_id; 136 137 writel(0x0, priv->ethdr_comp[ETHDR_MIXER].regs + MIX_INTSTA); 138 139 if (!priv->vblank_cb) 140 return IRQ_NONE; 141 142 priv->vblank_cb(priv->vblank_cb_data); 143 144 return IRQ_HANDLED; 145 } 146 147 void mtk_ethdr_layer_config(struct device *dev, unsigned int idx, 148 struct mtk_plane_state *state, 149 struct cmdq_pkt *cmdq_pkt) 150 { 151 struct mtk_ethdr *priv = dev_get_drvdata(dev); 152 struct mtk_ethdr_comp *mixer = &priv->ethdr_comp[ETHDR_MIXER]; 153 struct mtk_plane_pending_state *pending = &state->pending; 154 unsigned int offset = (pending->x & 1) << 31 | pending->y << 16 | pending->x; 155 unsigned int align_width = ALIGN_DOWN(pending->width, 2); 156 unsigned int alpha_con = 0; 157 158 dev_dbg(dev, "%s+ idx:%d", __func__, idx); 159 160 if (idx >= 4) 161 return; 162 163 if (!pending->enable) { 164 mtk_ddp_write(cmdq_pkt, 0, &mixer->cmdq_base, mixer->regs, MIX_L_SRC_SIZE(idx)); 165 return; 166 } 167 168 if (state->base.fb && state->base.fb->format->has_alpha) 169 alpha_con = MIXER_ALPHA_AEN | MIXER_ALPHA; 170 171 mtk_mmsys_mixer_in_config(priv->mmsys_dev, idx + 1, alpha_con ? false : true, 172 DEFAULT_9BIT_ALPHA, 173 pending->x & 1 ? MIXER_INX_MODE_EVEN_EXTEND : 174 MIXER_INX_MODE_BYPASS, align_width / 2 - 1, cmdq_pkt); 175 176 mtk_ddp_write(cmdq_pkt, pending->height << 16 | align_width, &mixer->cmdq_base, 177 mixer->regs, MIX_L_SRC_SIZE(idx)); 178 mtk_ddp_write(cmdq_pkt, offset, &mixer->cmdq_base, mixer->regs, MIX_L_SRC_OFFSET(idx)); 179 mtk_ddp_write_mask(cmdq_pkt, alpha_con, &mixer->cmdq_base, mixer->regs, MIX_L_SRC_CON(idx), 180 0x1ff); 181 mtk_ddp_write_mask(cmdq_pkt, BIT(idx), &mixer->cmdq_base, mixer->regs, MIX_SRC_CON, 182 BIT(idx)); 183 } 184 185 void mtk_ethdr_config(struct device *dev, unsigned int w, 186 unsigned int h, unsigned int vrefresh, 187 unsigned int bpc, struct cmdq_pkt *cmdq_pkt) 188 { 189 struct mtk_ethdr *priv = dev_get_drvdata(dev); 190 struct mtk_ethdr_comp *vdo_fe0 = &priv->ethdr_comp[ETHDR_VDO_FE0]; 191 struct mtk_ethdr_comp *vdo_fe1 = &priv->ethdr_comp[ETHDR_VDO_FE1]; 192 struct mtk_ethdr_comp *gfx_fe0 = &priv->ethdr_comp[ETHDR_GFX_FE0]; 193 struct mtk_ethdr_comp *gfx_fe1 = &priv->ethdr_comp[ETHDR_GFX_FE1]; 194 struct mtk_ethdr_comp *vdo_be = &priv->ethdr_comp[ETHDR_VDO_BE]; 195 struct mtk_ethdr_comp *mixer = &priv->ethdr_comp[ETHDR_MIXER]; 196 197 dev_dbg(dev, "%s-w:%d, h:%d\n", __func__, w, h); 198 199 mtk_ddp_write(cmdq_pkt, HDR_VDO_FE_0804_BYPASS_ALL, &vdo_fe0->cmdq_base, 200 vdo_fe0->regs, HDR_VDO_FE_0804_HDR_DM_FE); 201 202 mtk_ddp_write(cmdq_pkt, HDR_VDO_FE_0804_BYPASS_ALL, &vdo_fe1->cmdq_base, 203 vdo_fe1->regs, HDR_VDO_FE_0804_HDR_DM_FE); 204 205 mtk_ddp_write(cmdq_pkt, HDR_GFX_FE_0204_BYPASS_ALL, &gfx_fe0->cmdq_base, 206 gfx_fe0->regs, HDR_GFX_FE_0204_GFX_HDR_FE); 207 208 mtk_ddp_write(cmdq_pkt, HDR_GFX_FE_0204_BYPASS_ALL, &gfx_fe1->cmdq_base, 209 gfx_fe1->regs, HDR_GFX_FE_0204_GFX_HDR_FE); 210 211 mtk_ddp_write(cmdq_pkt, HDR_VDO_BE_0204_BYPASS_ALL, &vdo_be->cmdq_base, 212 vdo_be->regs, HDR_VDO_BE_0204_VDO_DM_BE); 213 214 mtk_ddp_write(cmdq_pkt, MIX_FUNC_DCM_ENABLE, &mixer->cmdq_base, mixer->regs, MIX_FUNC_DCM0); 215 mtk_ddp_write(cmdq_pkt, MIX_FUNC_DCM_ENABLE, &mixer->cmdq_base, mixer->regs, MIX_FUNC_DCM1); 216 mtk_ddp_write(cmdq_pkt, h << 16 | w, &mixer->cmdq_base, mixer->regs, MIX_ROI_SIZE); 217 mtk_ddp_write(cmdq_pkt, BGCLR_BLACK, &mixer->cmdq_base, mixer->regs, MIX_ROI_BGCLR); 218 mtk_ddp_write(cmdq_pkt, NON_PREMULTI_SOURCE, &mixer->cmdq_base, mixer->regs, 219 MIX_L_SRC_CON(0)); 220 mtk_ddp_write(cmdq_pkt, NON_PREMULTI_SOURCE, &mixer->cmdq_base, mixer->regs, 221 MIX_L_SRC_CON(1)); 222 mtk_ddp_write(cmdq_pkt, NON_PREMULTI_SOURCE, &mixer->cmdq_base, mixer->regs, 223 MIX_L_SRC_CON(2)); 224 mtk_ddp_write(cmdq_pkt, NON_PREMULTI_SOURCE, &mixer->cmdq_base, mixer->regs, 225 MIX_L_SRC_CON(3)); 226 mtk_ddp_write(cmdq_pkt, 0x0, &mixer->cmdq_base, mixer->regs, MIX_L_SRC_SIZE(0)); 227 mtk_ddp_write(cmdq_pkt, OUTPUT_NO_RND | SOURCE_RGB_SEL | BACKGROUND_RELAY, 228 &mixer->cmdq_base, mixer->regs, MIX_DATAPATH_CON); 229 mtk_ddp_write_mask(cmdq_pkt, MIX_SRC_L0_EN, &mixer->cmdq_base, mixer->regs, 230 MIX_SRC_CON, MIX_SRC_L0_EN); 231 232 mtk_mmsys_hdr_config(priv->mmsys_dev, w / 2, h, cmdq_pkt); 233 mtk_mmsys_mixer_in_channel_swap(priv->mmsys_dev, 4, 0, cmdq_pkt); 234 } 235 236 void mtk_ethdr_start(struct device *dev) 237 { 238 struct mtk_ethdr *priv = dev_get_drvdata(dev); 239 struct mtk_ethdr_comp *mixer = &priv->ethdr_comp[ETHDR_MIXER]; 240 241 writel(1, mixer->regs + MIX_EN); 242 } 243 244 void mtk_ethdr_stop(struct device *dev) 245 { 246 struct mtk_ethdr *priv = dev_get_drvdata(dev); 247 struct mtk_ethdr_comp *mixer = &priv->ethdr_comp[ETHDR_MIXER]; 248 249 writel(0, mixer->regs + MIX_EN); 250 writel(1, mixer->regs + MIX_RST); 251 reset_control_reset(priv->reset_ctl); 252 writel(0, mixer->regs + MIX_RST); 253 } 254 255 int mtk_ethdr_clk_enable(struct device *dev) 256 { 257 int ret; 258 struct mtk_ethdr *priv = dev_get_drvdata(dev); 259 260 ret = clk_bulk_prepare_enable(ETHDR_CLK_NUM, priv->ethdr_clk); 261 if (ret) 262 dev_err(dev, 263 "ethdr_clk prepare enable failed\n"); 264 return ret; 265 } 266 267 void mtk_ethdr_clk_disable(struct device *dev) 268 { 269 struct mtk_ethdr *priv = dev_get_drvdata(dev); 270 271 clk_bulk_disable_unprepare(ETHDR_CLK_NUM, priv->ethdr_clk); 272 } 273 274 static int mtk_ethdr_bind(struct device *dev, struct device *master, 275 void *data) 276 { 277 struct mtk_ethdr *priv = dev_get_drvdata(dev); 278 279 priv->mmsys_dev = data; 280 return 0; 281 } 282 283 static void mtk_ethdr_unbind(struct device *dev, struct device *master, void *data) 284 { 285 } 286 287 static const struct component_ops mtk_ethdr_component_ops = { 288 .bind = mtk_ethdr_bind, 289 .unbind = mtk_ethdr_unbind, 290 }; 291 292 static int mtk_ethdr_probe(struct platform_device *pdev) 293 { 294 struct device *dev = &pdev->dev; 295 struct mtk_ethdr *priv; 296 int ret; 297 int i; 298 299 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 300 if (!priv) 301 return -ENOMEM; 302 303 for (i = 0; i < ETHDR_ID_MAX; i++) { 304 priv->ethdr_comp[i].dev = dev; 305 priv->ethdr_comp[i].regs = of_iomap(dev->of_node, i); 306 #if IS_REACHABLE(CONFIG_MTK_CMDQ) 307 ret = cmdq_dev_get_client_reg(dev, 308 &priv->ethdr_comp[i].cmdq_base, i); 309 if (ret) 310 dev_dbg(dev, "get mediatek,gce-client-reg fail!\n"); 311 #endif 312 dev_dbg(dev, "[DRM]regs:0x%p, node:%d\n", priv->ethdr_comp[i].regs, i); 313 } 314 315 for (i = 0; i < ETHDR_CLK_NUM; i++) 316 priv->ethdr_clk[i].id = ethdr_clk_str[i]; 317 ret = devm_clk_bulk_get_optional(dev, ETHDR_CLK_NUM, priv->ethdr_clk); 318 if (ret) 319 return ret; 320 321 priv->irq = platform_get_irq(pdev, 0); 322 if (priv->irq < 0) 323 priv->irq = 0; 324 325 if (priv->irq) { 326 ret = devm_request_irq(dev, priv->irq, mtk_ethdr_irq_handler, 327 IRQF_TRIGGER_NONE, dev_name(dev), priv); 328 if (ret < 0) { 329 dev_err(dev, "Failed to request irq %d: %d\n", priv->irq, ret); 330 return ret; 331 } 332 } 333 334 priv->reset_ctl = devm_reset_control_array_get_optional_exclusive(dev); 335 if (IS_ERR(priv->reset_ctl)) { 336 dev_err_probe(dev, PTR_ERR(priv->reset_ctl), "cannot get ethdr reset control\n"); 337 return PTR_ERR(priv->reset_ctl); 338 } 339 340 platform_set_drvdata(pdev, priv); 341 342 ret = component_add(dev, &mtk_ethdr_component_ops); 343 if (ret) 344 dev_notice(dev, "Failed to add component: %d\n", ret); 345 346 return ret; 347 } 348 349 static void mtk_ethdr_remove(struct platform_device *pdev) 350 { 351 component_del(&pdev->dev, &mtk_ethdr_component_ops); 352 } 353 354 static const struct of_device_id mtk_ethdr_driver_dt_match[] = { 355 { .compatible = "mediatek,mt8195-disp-ethdr"}, 356 {}, 357 }; 358 359 MODULE_DEVICE_TABLE(of, mtk_ethdr_driver_dt_match); 360 361 struct platform_driver mtk_ethdr_driver = { 362 .probe = mtk_ethdr_probe, 363 .remove_new = mtk_ethdr_remove, 364 .driver = { 365 .name = "mediatek-disp-ethdr", 366 .owner = THIS_MODULE, 367 .of_match_table = mtk_ethdr_driver_dt_match, 368 }, 369 }; 370