4  * Parts of this file were based on the MCDE driver by Marcus Lorentzon
9  * DOC: ST-Ericsson MCDE Driver
11  * The MCDE (short for multi-channel display engine) is a graphics
84 #define DRIVER_DESC	"DRM module for MCDE"
113 	struct mcde *mcde = data;  in mcde_irq()  local
116 	val = readl(mcde->regs + MCDE_MISERR);  in mcde_irq()
118 	mcde_display_irq(mcde);  in mcde_irq()
121 		dev_info(mcde->dev, "some error IRQ\n");  in mcde_irq()
122 	writel(val, mcde->regs + MCDE_RISERR);  in mcde_irq()
130 	struct mcde *mcde = to_mcde(drm);  in mcde_modeset_init()  local
135 	 * any other bridge connected directly to the MCDE DPI output.  in mcde_modeset_init()
141 	if (!mcde->bridge) {  in mcde_modeset_init()
161 		mcde->dpi_output = true;  in mcde_modeset_init()
162 		mcde->bridge = bridge;  in mcde_modeset_init()
163 		mcde->flow_mode = MCDE_DPI_FORMATTER_FLOW;  in mcde_modeset_init()
188 	ret = drm_simple_display_pipe_attach_bridge(&mcde->pipe,  in mcde_modeset_init()
189 						    mcde->bridge);  in mcde_modeset_init()
209 	.name = "mcde",
272 	struct mcde *mcde;  in mcde_probe()  local
279 	mcde = devm_drm_dev_alloc(dev, &mcde_drm_driver, struct mcde, drm);  in mcde_probe()
280 	if (IS_ERR(mcde))  in mcde_probe()
281 		return PTR_ERR(mcde);  in mcde_probe()
282 	drm = &mcde->drm;  in mcde_probe()
283 	mcde->dev = dev;  in mcde_probe()
287 	mcde->epod = devm_regulator_get(dev, "epod");  in mcde_probe()
288 	if (IS_ERR(mcde->epod)) {  in mcde_probe()
289 		ret = PTR_ERR(mcde->epod);  in mcde_probe()
293 	ret = regulator_enable(mcde->epod);  in mcde_probe()
298 	mcde->vana = devm_regulator_get(dev, "vana");  in mcde_probe()
299 	if (IS_ERR(mcde->vana)) {  in mcde_probe()
300 		ret = PTR_ERR(mcde->vana);  in mcde_probe()
304 	ret = regulator_enable(mcde->vana);  in mcde_probe()
315 	mcde->mcde_clk = devm_clk_get(dev, "mcde");  in mcde_probe()
316 	if (IS_ERR(mcde->mcde_clk)) {  in mcde_probe()
317 		dev_err(dev, "unable to get MCDE main clock\n");  in mcde_probe()
318 		ret = PTR_ERR(mcde->mcde_clk);  in mcde_probe()
321 	ret = clk_prepare_enable(mcde->mcde_clk);  in mcde_probe()
323 		dev_err(dev, "failed to enable MCDE main clock\n");  in mcde_probe()
326 	dev_info(dev, "MCDE clk rate %lu Hz\n", clk_get_rate(mcde->mcde_clk));  in mcde_probe()
328 	mcde->lcd_clk = devm_clk_get(dev, "lcd");  in mcde_probe()
329 	if (IS_ERR(mcde->lcd_clk)) {  in mcde_probe()
331 		ret = PTR_ERR(mcde->lcd_clk);  in mcde_probe()
334 	mcde->hdmi_clk = devm_clk_get(dev, "hdmi");  in mcde_probe()
335 	if (IS_ERR(mcde->hdmi_clk)) {  in mcde_probe()
337 		ret = PTR_ERR(mcde->hdmi_clk);  in mcde_probe()
341 	mcde->regs = devm_platform_ioremap_resource(pdev, 0);  in mcde_probe()
342 	if (IS_ERR(mcde->regs)) {  in mcde_probe()
343 		dev_err(dev, "no MCDE regs\n");  in mcde_probe()
354 	ret = devm_request_irq(dev, irq, mcde_irq, 0, "mcde", mcde);  in mcde_probe()
366 	pid = readl(mcde->regs + MCDE_PID);  in mcde_probe()
367 	dev_info(dev, "found MCDE HW revision %d.%d (dev %d, metal fix %d)\n",  in mcde_probe()
383 	mcde_display_disable_irqs(mcde);  in mcde_probe()
384 	writel(0, mcde->regs + MCDE_IMSCERR);  in mcde_probe()
385 	writel(0xFFFFFFFF, mcde->regs + MCDE_RISERR);  in mcde_probe()
414 	 * Perform an invasive reset of the MCDE and all blocks by  in mcde_probe()
419 	ret = regulator_disable(mcde->epod);  in mcde_probe()
435 		clk_disable_unprepare(mcde->mcde_clk);  in mcde_probe()
436 		regulator_disable(mcde->vana);  in mcde_probe()
443 	clk_disable_unprepare(mcde->mcde_clk);  in mcde_probe()
445 	regulator_disable(mcde->vana);  in mcde_probe()
447 	regulator_disable(mcde->epod);  in mcde_probe()
455 	struct mcde *mcde = to_mcde(drm);  in mcde_remove()  local
458 	clk_disable_unprepare(mcde->mcde_clk);  in mcde_remove()
459 	regulator_disable(mcde->vana);  in mcde_remove()
460 	regulator_disable(mcde->epod);  in mcde_remove()
467 		.compatible = "ste,mcde",
474 		.name           = "mcde",
510 MODULE_ALIAS("platform:mcde-drm");