3  * linux/drivers/video/omap2/dss/dpi.c
12 #define DSS_SUBSYS_NAME "DPI"
65 	 * XXX we can't currently use DSI PLL for DPI with OMAP3, as the DSI PLL  in dpi_get_pll()
66 	 * would also be used for DISPC fclk. Meaning, when the DPI output is  in dpi_get_pll()
220 static bool dpi_dsi_clk_calc(struct dpi_data *dpi, unsigned long pck,  in dpi_dsi_clk_calc()  argument
227 	ctx->pll = dpi->pll;  in dpi_dsi_clk_calc()
272 static int dpi_set_dsi_clk(struct dpi_data *dpi, enum omap_channel channel,  in dpi_set_dsi_clk()  argument
280 	ok = dpi_dsi_clk_calc(dpi, pck_req, &ctx);  in dpi_set_dsi_clk()
284 	r = dss_pll_set_config(dpi->pll, &ctx.dsi_cinfo);  in dpi_set_dsi_clk()
291 	dpi->mgr_config.clock_info = ctx.dispc_cinfo;  in dpi_set_dsi_clk()
300 static int dpi_set_dispc_clk(struct dpi_data *dpi, unsigned long pck_req,  in dpi_set_dispc_clk()  argument
315 	dpi->mgr_config.clock_info = ctx.dispc_cinfo;  in dpi_set_dispc_clk()
324 static int dpi_set_mode(struct dpi_data *dpi)  in dpi_set_mode()  argument
326 	struct omap_dss_device *out = &dpi->output;  in dpi_set_mode()
328 	struct omap_video_timings *t = &dpi->timings;  in dpi_set_mode()
334 	if (dpi->pll)  in dpi_set_mode()
335 		r = dpi_set_dsi_clk(dpi, mgr->id, t->pixelclock, &fck,  in dpi_set_mode()
338 		r = dpi_set_dispc_clk(dpi, t->pixelclock, &fck,  in dpi_set_mode()
357 static void dpi_config_lcd_manager(struct dpi_data *dpi)  in dpi_config_lcd_manager()  argument
359 	struct omap_dss_device *out = &dpi->output;  in dpi_config_lcd_manager()
362 	dpi->mgr_config.io_pad_mode = DSS_IO_PAD_MODE_BYPASS;  in dpi_config_lcd_manager()
364 	dpi->mgr_config.stallmode = false;  in dpi_config_lcd_manager()
365 	dpi->mgr_config.fifohandcheck = false;  in dpi_config_lcd_manager()
367 	dpi->mgr_config.video_port_width = dpi->data_lines;  in dpi_config_lcd_manager()
369 	dpi->mgr_config.lcden_sig_polarity = 0;  in dpi_config_lcd_manager()
371 	dss_mgr_set_lcd_config(mgr, &dpi->mgr_config);  in dpi_config_lcd_manager()
376 	struct dpi_data *dpi = dpi_get_data_from_dssdev(dssdev);  in dpi_display_enable()  local
377 	struct omap_dss_device *out = &dpi->output;  in dpi_display_enable()
380 	mutex_lock(&dpi->lock);  in dpi_display_enable()
382 	if (dss_has_feature(FEAT_DPI_USES_VDDS_DSI) && !dpi->vdds_dsi_reg) {  in dpi_display_enable()
395 		r = regulator_enable(dpi->vdds_dsi_reg);  in dpi_display_enable()
408 	if (dpi->pll) {  in dpi_display_enable()
409 		r = dss_pll_enable(dpi->pll);  in dpi_display_enable()
414 	r = dpi_set_mode(dpi);  in dpi_display_enable()
418 	dpi_config_lcd_manager(dpi);  in dpi_display_enable()
426 	mutex_unlock(&dpi->lock);  in dpi_display_enable()
432 	if (dpi->pll)  in dpi_display_enable()
433 		dss_pll_disable(dpi->pll);  in dpi_display_enable()
439 		regulator_disable(dpi->vdds_dsi_reg);  in dpi_display_enable()
443 	mutex_unlock(&dpi->lock);  in dpi_display_enable()
449 	struct dpi_data *dpi = dpi_get_data_from_dssdev(dssdev);  in dpi_display_disable()  local
450 	struct omap_overlay_manager *mgr = dpi->output.manager;  in dpi_display_disable()
452 	mutex_lock(&dpi->lock);  in dpi_display_disable()
456 	if (dpi->pll) {  in dpi_display_disable()
458 		dss_pll_disable(dpi->pll);  in dpi_display_disable()
464 		regulator_disable(dpi->vdds_dsi_reg);  in dpi_display_disable()
466 	mutex_unlock(&dpi->lock);  in dpi_display_disable()
472 	struct dpi_data *dpi = dpi_get_data_from_dssdev(dssdev);  in dpi_set_timings()  local
476 	mutex_lock(&dpi->lock);  in dpi_set_timings()
478 	dpi->timings = *timings;  in dpi_set_timings()
480 	mutex_unlock(&dpi->lock);  in dpi_set_timings()
486 	struct dpi_data *dpi = dpi_get_data_from_dssdev(dssdev);  in dpi_get_timings()  local
488 	mutex_lock(&dpi->lock);  in dpi_get_timings()
490 	*timings = dpi->timings;  in dpi_get_timings()
492 	mutex_unlock(&dpi->lock);  in dpi_get_timings()
498 	struct dpi_data *dpi = dpi_get_data_from_dssdev(dssdev);  in dpi_check_timings()  local
499 	struct omap_overlay_manager *mgr = dpi->output.manager;  in dpi_check_timings()
512 	if (dpi->pll) {  in dpi_check_timings()
513 		ok = dpi_dsi_clk_calc(dpi, timings->pixelclock, &ctx);  in dpi_check_timings()
538 	struct dpi_data *dpi = dpi_get_data_from_dssdev(dssdev);  in dpi_set_data_lines()  local
540 	mutex_lock(&dpi->lock);  in dpi_set_data_lines()
542 	dpi->data_lines = data_lines;  in dpi_set_data_lines()
544 	mutex_unlock(&dpi->lock);  in dpi_set_data_lines()
562 static int dpi_init_regulator(struct dpi_data *dpi)  in dpi_init_regulator()  argument
569 	if (dpi->vdds_dsi_reg)  in dpi_init_regulator()
572 	vdds_dsi = devm_regulator_get(&dpi->pdev->dev, "vdds_dsi");  in dpi_init_regulator()
579 	dpi->vdds_dsi_reg = vdds_dsi;  in dpi_init_regulator()
584 static void dpi_init_pll(struct dpi_data *dpi)  in dpi_init_pll()  argument
588 	if (dpi->pll)  in dpi_init_pll()
591 	pll = dpi_get_pll(dpi->output.dispc_channel);  in dpi_init_pll()
597 		dss_ctrl_pll_set_control_mux(pll->id, dpi->output.dispc_channel);  in dpi_init_pll()
604 	dpi->pll = pll;  in dpi_init_pll()
608  * Return a hardcoded channel for the DPI output. This should work for
652 	struct dpi_data *dpi = dpi_get_data_from_dssdev(dssdev);  in dpi_connect()  local
656 	r = dpi_init_regulator(dpi);  in dpi_connect()
660 	dpi_init_pll(dpi);  in dpi_connect()
711 	struct dpi_data *dpi = dpi_get_data_from_pdev(pdev);  in dpi_init_output()  local
712 	struct omap_dss_device *out = &dpi->output;  in dpi_init_output()
717 	out->name = "dpi.0";  in dpi_init_output()
719 	out->ops.dpi = &dpi_ops;  in dpi_init_output()
727 	struct dpi_data *dpi = dpi_get_data_from_pdev(pdev);  in dpi_uninit_output()  local
728 	struct omap_dss_device *out = &dpi->output;  in dpi_uninit_output()
736 	struct dpi_data *dpi = port->data;  in dpi_init_output_port()  local
737 	struct omap_dss_device *out = &dpi->output;  in dpi_init_output_port()
747 		out->name = "dpi.2";  in dpi_init_output_port()
750 		out->name = "dpi.1";  in dpi_init_output_port()
754 		out->name = "dpi.0";  in dpi_init_output_port()
763 	out->ops.dpi = &dpi_ops;  in dpi_init_output_port()
771 	struct dpi_data *dpi = port->data;  in dpi_uninit_output_port()  local
772 	struct omap_dss_device *out = &dpi->output;  in dpi_uninit_output_port()
780 	struct dpi_data *dpi;  in dpi_bind()  local
782 	dpi = devm_kzalloc(&pdev->dev, sizeof(*dpi), GFP_KERNEL);  in dpi_bind()
783 	if (!dpi)  in dpi_bind()
786 	dpi->pdev = pdev;  in dpi_bind()
788 	platform_set_drvdata(pdev, dpi);  in dpi_bind()
790 	mutex_init(&dpi->lock);  in dpi_bind()
840 	struct dpi_data *dpi;  in dpi_init_port()  local
845 	dpi = devm_kzalloc(&pdev->dev, sizeof(*dpi), GFP_KERNEL);  in dpi_init_port()
846 	if (!dpi)  in dpi_init_port()
859 	dpi->data_lines = datalines;  in dpi_init_port()
863 	dpi->pdev = pdev;  in dpi_init_port()
864 	port->data = dpi;  in dpi_init_port()
866 	mutex_init(&dpi->lock);  in dpi_init_port()
870 	dpi->port_initialized = true;  in dpi_init_port()
882 	struct dpi_data *dpi = port->data;  in dpi_uninit_port()  local
884 	if (!dpi->port_initialized)  in dpi_uninit_port()