161 static void mtk_dpi_mask(struct mtk_dpi *dpi, u32 offset, u32 val, u32 mask)  in mtk_dpi_mask()  argument
163 	u32 tmp = readl(dpi->regs + offset) & ~mask;  in mtk_dpi_mask()
166 	writel(tmp, dpi->regs + offset);  in mtk_dpi_mask()
169 static void mtk_dpi_sw_reset(struct mtk_dpi *dpi, bool reset)  in mtk_dpi_sw_reset()  argument
171 	mtk_dpi_mask(dpi, DPI_RET, reset ? RST : 0, RST);  in mtk_dpi_sw_reset()
174 static void mtk_dpi_enable(struct mtk_dpi *dpi)  in mtk_dpi_enable()  argument
176 	mtk_dpi_mask(dpi, DPI_EN, EN, EN);  in mtk_dpi_enable()
179 static void mtk_dpi_disable(struct mtk_dpi *dpi)  in mtk_dpi_disable()  argument
181 	mtk_dpi_mask(dpi, DPI_EN, 0, EN);  in mtk_dpi_disable()
184 static void mtk_dpi_config_hsync(struct mtk_dpi *dpi,  in mtk_dpi_config_hsync()  argument
187 	mtk_dpi_mask(dpi, DPI_TGEN_HWIDTH, sync->sync_width << HPW,  in mtk_dpi_config_hsync()
188 		     dpi->conf->dimension_mask << HPW);  in mtk_dpi_config_hsync()
189 	mtk_dpi_mask(dpi, DPI_TGEN_HPORCH, sync->back_porch << HBP,  in mtk_dpi_config_hsync()
190 		     dpi->conf->dimension_mask << HBP);  in mtk_dpi_config_hsync()
191 	mtk_dpi_mask(dpi, DPI_TGEN_HPORCH, sync->front_porch << HFP,  in mtk_dpi_config_hsync()
192 		     dpi->conf->dimension_mask << HFP);  in mtk_dpi_config_hsync()
195 static void mtk_dpi_config_vsync(struct mtk_dpi *dpi,  in mtk_dpi_config_vsync()  argument
199 	mtk_dpi_mask(dpi, width_addr,  in mtk_dpi_config_vsync()
202 	mtk_dpi_mask(dpi, width_addr,  in mtk_dpi_config_vsync()
204 		     dpi->conf->dimension_mask << VSYNC_WIDTH_SHIFT);  in mtk_dpi_config_vsync()
205 	mtk_dpi_mask(dpi, porch_addr,  in mtk_dpi_config_vsync()
207 		     dpi->conf->dimension_mask << VSYNC_BACK_PORCH_SHIFT);  in mtk_dpi_config_vsync()
208 	mtk_dpi_mask(dpi, porch_addr,  in mtk_dpi_config_vsync()
210 		     dpi->conf->dimension_mask << VSYNC_FRONT_PORCH_SHIFT);  in mtk_dpi_config_vsync()
213 static void mtk_dpi_config_vsync_lodd(struct mtk_dpi *dpi,  in mtk_dpi_config_vsync_lodd()  argument
216 	mtk_dpi_config_vsync(dpi, sync, DPI_TGEN_VWIDTH, DPI_TGEN_VPORCH);  in mtk_dpi_config_vsync_lodd()
219 static void mtk_dpi_config_vsync_leven(struct mtk_dpi *dpi,  in mtk_dpi_config_vsync_leven()  argument
222 	mtk_dpi_config_vsync(dpi, sync, DPI_TGEN_VWIDTH_LEVEN,  in mtk_dpi_config_vsync_leven()
226 static void mtk_dpi_config_vsync_rodd(struct mtk_dpi *dpi,  in mtk_dpi_config_vsync_rodd()  argument
229 	mtk_dpi_config_vsync(dpi, sync, DPI_TGEN_VWIDTH_RODD,  in mtk_dpi_config_vsync_rodd()
233 static void mtk_dpi_config_vsync_reven(struct mtk_dpi *dpi,  in mtk_dpi_config_vsync_reven()  argument
236 	mtk_dpi_config_vsync(dpi, sync, DPI_TGEN_VWIDTH_REVEN,  in mtk_dpi_config_vsync_reven()
240 static void mtk_dpi_config_pol(struct mtk_dpi *dpi,  in mtk_dpi_config_pol()  argument
249 	if (dpi->conf->is_ck_de_pol) {  in mtk_dpi_config_pol()
257 	mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING, pol, mask);  in mtk_dpi_config_pol()
260 static void mtk_dpi_config_3d(struct mtk_dpi *dpi, bool en_3d)  in mtk_dpi_config_3d()  argument
262 	mtk_dpi_mask(dpi, DPI_CON, en_3d ? TDFP_EN : 0, TDFP_EN);  in mtk_dpi_config_3d()
265 static void mtk_dpi_config_interface(struct mtk_dpi *dpi, bool inter)  in mtk_dpi_config_interface()  argument
267 	mtk_dpi_mask(dpi, DPI_CON, inter ? INTL_EN : 0, INTL_EN);  in mtk_dpi_config_interface()
270 static void mtk_dpi_config_fb_size(struct mtk_dpi *dpi, u32 width, u32 height)  in mtk_dpi_config_fb_size()  argument
272 	mtk_dpi_mask(dpi, DPI_SIZE, width << HSIZE,  in mtk_dpi_config_fb_size()
273 		     dpi->conf->hvsize_mask << HSIZE);  in mtk_dpi_config_fb_size()
274 	mtk_dpi_mask(dpi, DPI_SIZE, height << VSIZE,  in mtk_dpi_config_fb_size()
275 		     dpi->conf->hvsize_mask << VSIZE);  in mtk_dpi_config_fb_size()
278 static void mtk_dpi_config_channel_limit(struct mtk_dpi *dpi)  in mtk_dpi_config_channel_limit()  argument
282 	if (drm_default_rgb_quant_range(&dpi->mode) ==  in mtk_dpi_config_channel_limit()
295 	mtk_dpi_mask(dpi, DPI_Y_LIMIT, limit.y_bottom << Y_LIMINT_BOT,  in mtk_dpi_config_channel_limit()
297 	mtk_dpi_mask(dpi, DPI_Y_LIMIT, limit.y_top << Y_LIMINT_TOP,  in mtk_dpi_config_channel_limit()
299 	mtk_dpi_mask(dpi, DPI_C_LIMIT, limit.c_bottom << C_LIMIT_BOT,  in mtk_dpi_config_channel_limit()
301 	mtk_dpi_mask(dpi, DPI_C_LIMIT, limit.c_top << C_LIMIT_TOP,  in mtk_dpi_config_channel_limit()
305 static void mtk_dpi_config_bit_num(struct mtk_dpi *dpi,  in mtk_dpi_config_bit_num()  argument
327 	mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING, val << OUT_BIT,  in mtk_dpi_config_bit_num()
331 static void mtk_dpi_config_yc_map(struct mtk_dpi *dpi,  in mtk_dpi_config_yc_map()  argument
357 	mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING, val << YC_MAP, YC_MAP_MASK);  in mtk_dpi_config_yc_map()
360 static void mtk_dpi_config_channel_swap(struct mtk_dpi *dpi,  in mtk_dpi_config_channel_swap()  argument
389 	mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING,  in mtk_dpi_config_channel_swap()
390 		     val << dpi->conf->channel_swap_shift,  in mtk_dpi_config_channel_swap()
391 		     CH_SWAP_MASK << dpi->conf->channel_swap_shift);  in mtk_dpi_config_channel_swap()
394 static void mtk_dpi_config_yuv422_enable(struct mtk_dpi *dpi, bool enable)  in mtk_dpi_config_yuv422_enable()  argument
396 	mtk_dpi_mask(dpi, DPI_CON, enable ? dpi->conf->yuv422_en_bit : 0,  in mtk_dpi_config_yuv422_enable()
397 		     dpi->conf->yuv422_en_bit);  in mtk_dpi_config_yuv422_enable()
400 static void mtk_dpi_config_csc_enable(struct mtk_dpi *dpi, bool enable)  in mtk_dpi_config_csc_enable()  argument
402 	mtk_dpi_mask(dpi, DPI_CON, enable ? dpi->conf->csc_enable_bit : 0,  in mtk_dpi_config_csc_enable()
403 		     dpi->conf->csc_enable_bit);  in mtk_dpi_config_csc_enable()
406 static void mtk_dpi_config_swap_input(struct mtk_dpi *dpi, bool enable)  in mtk_dpi_config_swap_input()  argument
408 	mtk_dpi_mask(dpi, DPI_CON, enable ? IN_RB_SWAP : 0, IN_RB_SWAP);  in mtk_dpi_config_swap_input()
411 static void mtk_dpi_config_2n_h_fre(struct mtk_dpi *dpi)  in mtk_dpi_config_2n_h_fre()  argument
413 	mtk_dpi_mask(dpi, dpi->conf->reg_h_fre_con, H_FRE_2N, H_FRE_2N);  in mtk_dpi_config_2n_h_fre()
416 static void mtk_dpi_config_disable_edge(struct mtk_dpi *dpi)  in mtk_dpi_config_disable_edge()  argument
418 	if (dpi->conf->edge_sel_en)  in mtk_dpi_config_disable_edge()
419 		mtk_dpi_mask(dpi, dpi->conf->reg_h_fre_con, 0, EDGE_SEL_EN);  in mtk_dpi_config_disable_edge()
422 static void mtk_dpi_config_color_format(struct mtk_dpi *dpi,  in mtk_dpi_config_color_format()  argument
425 	mtk_dpi_config_channel_swap(dpi, MTK_DPI_OUT_CHANNEL_SWAP_RGB);  in mtk_dpi_config_color_format()
428 		mtk_dpi_config_yuv422_enable(dpi, true);  in mtk_dpi_config_color_format()
429 		mtk_dpi_config_csc_enable(dpi, true);  in mtk_dpi_config_color_format()
435 		mtk_dpi_mask(dpi, DPI_MATRIX_SET, dpi->mode.hdisplay <= 720 ?  in mtk_dpi_config_color_format()
439 		mtk_dpi_config_yuv422_enable(dpi, false);  in mtk_dpi_config_color_format()
440 		mtk_dpi_config_csc_enable(dpi, false);  in mtk_dpi_config_color_format()
441 		if (dpi->conf->swap_input_support)  in mtk_dpi_config_color_format()
442 			mtk_dpi_config_swap_input(dpi, false);  in mtk_dpi_config_color_format()
446 static void mtk_dpi_dual_edge(struct mtk_dpi *dpi)  in mtk_dpi_dual_edge()  argument
448 	if ((dpi->output_fmt == MEDIA_BUS_FMT_RGB888_2X12_LE) ||  in mtk_dpi_dual_edge()
449 	    (dpi->output_fmt == MEDIA_BUS_FMT_RGB888_2X12_BE)) {  in mtk_dpi_dual_edge()
450 		mtk_dpi_mask(dpi, DPI_DDR_SETTING, DDR_EN | DDR_4PHASE,  in mtk_dpi_dual_edge()
452 		mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING,  in mtk_dpi_dual_edge()
453 			     dpi->output_fmt == MEDIA_BUS_FMT_RGB888_2X12_LE ?  in mtk_dpi_dual_edge()
455 		if (dpi->conf->edge_cfg_in_mmsys)  in mtk_dpi_dual_edge()
456 			mtk_mmsys_ddp_dpi_fmt_config(dpi->mmsys_dev, MTK_DPI_RGB888_DDR_CON);  in mtk_dpi_dual_edge()
458 		mtk_dpi_mask(dpi, DPI_DDR_SETTING, DDR_EN | DDR_4PHASE, 0);  in mtk_dpi_dual_edge()
459 		if (dpi->conf->edge_cfg_in_mmsys)  in mtk_dpi_dual_edge()
460 			mtk_mmsys_ddp_dpi_fmt_config(dpi->mmsys_dev, MTK_DPI_RGB888_SDR_CON);  in mtk_dpi_dual_edge()
464 static void mtk_dpi_power_off(struct mtk_dpi *dpi)  in mtk_dpi_power_off()  argument
466 	if (WARN_ON(dpi->refcount == 0))  in mtk_dpi_power_off()
469 	if (--dpi->refcount != 0)  in mtk_dpi_power_off()
472 	mtk_dpi_disable(dpi);  in mtk_dpi_power_off()
473 	clk_disable_unprepare(dpi->pixel_clk);  in mtk_dpi_power_off()
474 	clk_disable_unprepare(dpi->engine_clk);  in mtk_dpi_power_off()
477 static int mtk_dpi_power_on(struct mtk_dpi *dpi)  in mtk_dpi_power_on()  argument
481 	if (++dpi->refcount != 1)  in mtk_dpi_power_on()
484 	ret = clk_prepare_enable(dpi->engine_clk);  in mtk_dpi_power_on()
486 		dev_err(dpi->dev, "Failed to enable engine clock: %d\n", ret);  in mtk_dpi_power_on()
490 	ret = clk_prepare_enable(dpi->pixel_clk);  in mtk_dpi_power_on()
492 		dev_err(dpi->dev, "Failed to enable pixel clock: %d\n", ret);  in mtk_dpi_power_on()
499 	clk_disable_unprepare(dpi->engine_clk);  in mtk_dpi_power_on()
501 	dpi->refcount--;  in mtk_dpi_power_on()
505 static int mtk_dpi_set_display_mode(struct mtk_dpi *dpi,  in mtk_dpi_set_display_mode()  argument
519 	factor = dpi->conf->cal_factor(mode->clock);  in mtk_dpi_set_display_mode()
523 	dev_dbg(dpi->dev, "Want PLL %lu Hz, pixel clock %lu Hz\n",  in mtk_dpi_set_display_mode()
526 	clk_set_rate(dpi->tvd_clk, pll_rate);  in mtk_dpi_set_display_mode()
527 	pll_rate = clk_get_rate(dpi->tvd_clk);  in mtk_dpi_set_display_mode()
535 	vm.pixelclock /= dpi->conf->pixels_per_iter;  in mtk_dpi_set_display_mode()
537 	if ((dpi->output_fmt == MEDIA_BUS_FMT_RGB888_2X12_LE) ||  in mtk_dpi_set_display_mode()
538 	    (dpi->output_fmt == MEDIA_BUS_FMT_RGB888_2X12_BE))  in mtk_dpi_set_display_mode()
539 		clk_set_rate(dpi->pixel_clk, vm.pixelclock * 2);  in mtk_dpi_set_display_mode()
541 		clk_set_rate(dpi->pixel_clk, vm.pixelclock);  in mtk_dpi_set_display_mode()
544 	vm.pixelclock = clk_get_rate(dpi->pixel_clk);  in mtk_dpi_set_display_mode()
546 	dev_dbg(dpi->dev, "Got  PLL %lu Hz, pixel clock %lu Hz\n",  in mtk_dpi_set_display_mode()
561 	hsync.sync_width = vm.hsync_len / dpi->conf->pixels_per_iter;  in mtk_dpi_set_display_mode()
562 	hsync.back_porch = vm.hback_porch / dpi->conf->pixels_per_iter;  in mtk_dpi_set_display_mode()
563 	hsync.front_porch = vm.hfront_porch / dpi->conf->pixels_per_iter;  in mtk_dpi_set_display_mode()
586 	mtk_dpi_sw_reset(dpi, true);  in mtk_dpi_set_display_mode()
587 	mtk_dpi_config_pol(dpi, &dpi_pol);  in mtk_dpi_set_display_mode()
589 	mtk_dpi_config_hsync(dpi, &hsync);  in mtk_dpi_set_display_mode()
590 	mtk_dpi_config_vsync_lodd(dpi, &vsync_lodd);  in mtk_dpi_set_display_mode()
591 	mtk_dpi_config_vsync_rodd(dpi, &vsync_rodd);  in mtk_dpi_set_display_mode()
592 	mtk_dpi_config_vsync_leven(dpi, &vsync_leven);  in mtk_dpi_set_display_mode()
593 	mtk_dpi_config_vsync_reven(dpi, &vsync_reven);  in mtk_dpi_set_display_mode()
595 	mtk_dpi_config_3d(dpi, !!(mode->flags & DRM_MODE_FLAG_3D_MASK));  in mtk_dpi_set_display_mode()
596 	mtk_dpi_config_interface(dpi, !!(vm.flags &  in mtk_dpi_set_display_mode()
599 		mtk_dpi_config_fb_size(dpi, vm.hactive, vm.vactive >> 1);  in mtk_dpi_set_display_mode()
601 		mtk_dpi_config_fb_size(dpi, vm.hactive, vm.vactive);  in mtk_dpi_set_display_mode()
603 	mtk_dpi_config_channel_limit(dpi);  in mtk_dpi_set_display_mode()
604 	mtk_dpi_config_bit_num(dpi, dpi->bit_num);  in mtk_dpi_set_display_mode()
605 	mtk_dpi_config_channel_swap(dpi, dpi->channel_swap);  in mtk_dpi_set_display_mode()
606 	mtk_dpi_config_color_format(dpi, dpi->color_format);  in mtk_dpi_set_display_mode()
607 	if (dpi->conf->support_direct_pin) {  in mtk_dpi_set_display_mode()
608 		mtk_dpi_config_yc_map(dpi, dpi->yc_map);  in mtk_dpi_set_display_mode()
609 		mtk_dpi_config_2n_h_fre(dpi);  in mtk_dpi_set_display_mode()
610 		mtk_dpi_dual_edge(dpi);  in mtk_dpi_set_display_mode()
611 		mtk_dpi_config_disable_edge(dpi);  in mtk_dpi_set_display_mode()
613 	if (dpi->conf->input_2pixel) {  in mtk_dpi_set_display_mode()
614 		mtk_dpi_mask(dpi, DPI_CON, DPINTF_INPUT_2P_EN,  in mtk_dpi_set_display_mode()
617 	mtk_dpi_sw_reset(dpi, false);  in mtk_dpi_set_display_mode()
628 	struct mtk_dpi *dpi = bridge_to_dpi(bridge);  in mtk_dpi_bridge_atomic_get_output_bus_fmts()  local
633 	if (!dpi->conf->output_fmts) {  in mtk_dpi_bridge_atomic_get_output_bus_fmts()
634 		dev_err(dpi->dev, "output_fmts should not be null\n");  in mtk_dpi_bridge_atomic_get_output_bus_fmts()
638 	output_fmts = kcalloc(dpi->conf->num_output_fmts, sizeof(*output_fmts),  in mtk_dpi_bridge_atomic_get_output_bus_fmts()
643 	*num_output_fmts = dpi->conf->num_output_fmts;  in mtk_dpi_bridge_atomic_get_output_bus_fmts()
645 	memcpy(output_fmts, dpi->conf->output_fmts,  in mtk_dpi_bridge_atomic_get_output_bus_fmts()
646 	       sizeof(*output_fmts) * dpi->conf->num_output_fmts);  in mtk_dpi_bridge_atomic_get_output_bus_fmts()
678 	struct mtk_dpi *dpi = bridge_to_dpi(bridge);  in mtk_dpi_bridge_atomic_check()  local
684 		if (dpi->conf->num_output_fmts)  in mtk_dpi_bridge_atomic_check()
685 			out_bus_format = dpi->conf->output_fmts[0];  in mtk_dpi_bridge_atomic_check()
687 	dev_dbg(dpi->dev, "input format 0x%04x, output format 0x%04x\n",  in mtk_dpi_bridge_atomic_check()
691 	dpi->output_fmt = out_bus_format;  in mtk_dpi_bridge_atomic_check()
692 	dpi->bit_num = MTK_DPI_OUT_BIT_NUM_8BITS;  in mtk_dpi_bridge_atomic_check()
693 	dpi->channel_swap = MTK_DPI_OUT_CHANNEL_SWAP_RGB;  in mtk_dpi_bridge_atomic_check()
694 	dpi->yc_map = MTK_DPI_OUT_YC_MAP_RGB;  in mtk_dpi_bridge_atomic_check()
696 		dpi->color_format = MTK_DPI_COLOR_FORMAT_YCBCR_422;  in mtk_dpi_bridge_atomic_check()
698 		dpi->color_format = MTK_DPI_COLOR_FORMAT_RGB;  in mtk_dpi_bridge_atomic_check()
706 	struct mtk_dpi *dpi = bridge_to_dpi(bridge);  in mtk_dpi_bridge_attach()  local
708 	return drm_bridge_attach(bridge->encoder, dpi->next_bridge,  in mtk_dpi_bridge_attach()
709 				 &dpi->bridge, flags);  in mtk_dpi_bridge_attach()
716 	struct mtk_dpi *dpi = bridge_to_dpi(bridge);  in mtk_dpi_bridge_mode_set()  local
718 	drm_mode_copy(&dpi->mode, adjusted_mode);  in mtk_dpi_bridge_mode_set()
723 	struct mtk_dpi *dpi = bridge_to_dpi(bridge);  in mtk_dpi_bridge_disable()  local
725 	mtk_dpi_power_off(dpi);  in mtk_dpi_bridge_disable()
727 	if (dpi->pinctrl && dpi->pins_gpio)  in mtk_dpi_bridge_disable()
728 		pinctrl_select_state(dpi->pinctrl, dpi->pins_gpio);  in mtk_dpi_bridge_disable()
733 	struct mtk_dpi *dpi = bridge_to_dpi(bridge);  in mtk_dpi_bridge_enable()  local
735 	if (dpi->pinctrl && dpi->pins_dpi)  in mtk_dpi_bridge_enable()
736 		pinctrl_select_state(dpi->pinctrl, dpi->pins_dpi);  in mtk_dpi_bridge_enable()
738 	mtk_dpi_power_on(dpi);  in mtk_dpi_bridge_enable()
739 	mtk_dpi_set_display_mode(dpi, &dpi->mode);  in mtk_dpi_bridge_enable()
740 	mtk_dpi_enable(dpi);  in mtk_dpi_bridge_enable()
748 	struct mtk_dpi *dpi = bridge_to_dpi(bridge);  in mtk_dpi_bridge_mode_valid()  local
750 	if (mode->clock > dpi->conf->max_clock_khz)  in mtk_dpi_bridge_mode_valid()
772 	struct mtk_dpi *dpi = dev_get_drvdata(dev);  in mtk_dpi_start()  local
774 	mtk_dpi_power_on(dpi);  in mtk_dpi_start()
779 	struct mtk_dpi *dpi = dev_get_drvdata(dev);  in mtk_dpi_stop()  local
781 	mtk_dpi_power_off(dpi);  in mtk_dpi_stop()
786 	struct mtk_dpi *dpi = dev_get_drvdata(dev);  in mtk_dpi_bind()  local
791 	dpi->mmsys_dev = priv->mmsys_dev;  in mtk_dpi_bind()
792 	ret = drm_simple_encoder_init(drm_dev, &dpi->encoder,  in mtk_dpi_bind()
799 	dpi->encoder.possible_crtcs = mtk_drm_find_possible_crtc_by_comp(drm_dev, dpi->dev);  in mtk_dpi_bind()
801 	ret = drm_bridge_attach(&dpi->encoder, &dpi->bridge, NULL,  in mtk_dpi_bind()
806 	dpi->connector = drm_bridge_connector_init(drm_dev, &dpi->encoder);  in mtk_dpi_bind()
807 	if (IS_ERR(dpi->connector)) {  in mtk_dpi_bind()
809 		ret = PTR_ERR(dpi->connector);  in mtk_dpi_bind()
812 	drm_connector_attach_encoder(dpi->connector, &dpi->encoder);  in mtk_dpi_bind()
817 	drm_encoder_cleanup(&dpi->encoder);  in mtk_dpi_bind()
824 	struct mtk_dpi *dpi = dev_get_drvdata(dev);  in mtk_dpi_unbind()  local
826 	drm_encoder_cleanup(&dpi->encoder);  in mtk_dpi_unbind()
994 	struct mtk_dpi *dpi;  in mtk_dpi_probe()  local
997 	dpi = devm_kzalloc(dev, sizeof(*dpi), GFP_KERNEL);  in mtk_dpi_probe()
998 	if (!dpi)  in mtk_dpi_probe()
1001 	dpi->dev = dev;  in mtk_dpi_probe()
1002 	dpi->conf = (struct mtk_dpi_conf *)of_device_get_match_data(dev);  in mtk_dpi_probe()
1003 	dpi->output_fmt = MEDIA_BUS_FMT_RGB888_1X24;  in mtk_dpi_probe()
1005 	dpi->pinctrl = devm_pinctrl_get(&pdev->dev);  in mtk_dpi_probe()
1006 	if (IS_ERR(dpi->pinctrl)) {  in mtk_dpi_probe()
1007 		dpi->pinctrl = NULL;  in mtk_dpi_probe()
1010 	if (dpi->pinctrl) {  in mtk_dpi_probe()
1011 		dpi->pins_gpio = pinctrl_lookup_state(dpi->pinctrl, "sleep");  in mtk_dpi_probe()
1012 		if (IS_ERR(dpi->pins_gpio)) {  in mtk_dpi_probe()
1013 			dpi->pins_gpio = NULL;  in mtk_dpi_probe()
1016 		if (dpi->pins_gpio)  in mtk_dpi_probe()
1017 			pinctrl_select_state(dpi->pinctrl, dpi->pins_gpio);  in mtk_dpi_probe()
1019 		dpi->pins_dpi = pinctrl_lookup_state(dpi->pinctrl, "default");  in mtk_dpi_probe()
1020 		if (IS_ERR(dpi->pins_dpi)) {  in mtk_dpi_probe()
1021 			dpi->pins_dpi = NULL;  in mtk_dpi_probe()
1025 	dpi->regs = devm_platform_ioremap_resource(pdev, 0);  in mtk_dpi_probe()
1026 	if (IS_ERR(dpi->regs))  in mtk_dpi_probe()
1027 		return dev_err_probe(dev, PTR_ERR(dpi->regs),  in mtk_dpi_probe()
1030 	dpi->engine_clk = devm_clk_get(dev, "engine");  in mtk_dpi_probe()
1031 	if (IS_ERR(dpi->engine_clk))  in mtk_dpi_probe()
1032 		return dev_err_probe(dev, PTR_ERR(dpi->engine_clk),  in mtk_dpi_probe()
1035 	dpi->pixel_clk = devm_clk_get(dev, "pixel");  in mtk_dpi_probe()
1036 	if (IS_ERR(dpi->pixel_clk))  in mtk_dpi_probe()
1037 		return dev_err_probe(dev, PTR_ERR(dpi->pixel_clk),  in mtk_dpi_probe()
1040 	dpi->tvd_clk = devm_clk_get(dev, "pll");  in mtk_dpi_probe()
1041 	if (IS_ERR(dpi->tvd_clk))  in mtk_dpi_probe()
1042 		return dev_err_probe(dev, PTR_ERR(dpi->tvd_clk),  in mtk_dpi_probe()
1045 	dpi->irq = platform_get_irq(pdev, 0);  in mtk_dpi_probe()
1046 	if (dpi->irq < 0)  in mtk_dpi_probe()
1047 		return dpi->irq;  in mtk_dpi_probe()
1049 	dpi->next_bridge = devm_drm_of_get_bridge(dev, dev->of_node, 0, 0);  in mtk_dpi_probe()
1050 	if (IS_ERR(dpi->next_bridge))  in mtk_dpi_probe()
1051 		return dev_err_probe(dev, PTR_ERR(dpi->next_bridge),  in mtk_dpi_probe()
1054 	dev_info(dev, "Found bridge node: %pOF\n", dpi->next_bridge->of_node);  in mtk_dpi_probe()
1056 	platform_set_drvdata(pdev, dpi);  in mtk_dpi_probe()
1058 	dpi->bridge.funcs = &mtk_dpi_bridge_funcs;  in mtk_dpi_probe()
1059 	dpi->bridge.of_node = dev->of_node;  in mtk_dpi_probe()
1060 	dpi->bridge.type = DRM_MODE_CONNECTOR_DPI;  in mtk_dpi_probe()
1062 	ret = devm_drm_bridge_add(dev, &dpi->bridge);  in mtk_dpi_probe()