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
133 	if (!mcde->bridge) {  in mcde_modeset_init()
166 	ret = drm_simple_display_pipe_attach_bridge(&mcde->pipe,  in mcde_modeset_init()
167 						    mcde->bridge);  in mcde_modeset_init()
187 	.name = "mcde",
255 	struct mcde *mcde;  in mcde_probe()  local
263 	mcde = devm_drm_dev_alloc(dev, &mcde_drm_driver, struct mcde, drm);  in mcde_probe()
264 	if (IS_ERR(mcde))  in mcde_probe()
265 		return PTR_ERR(mcde);  in mcde_probe()
266 	drm = &mcde->drm;  in mcde_probe()
267 	mcde->dev = dev;  in mcde_probe()
271 	mcde->epod = devm_regulator_get(dev, "epod");  in mcde_probe()
272 	if (IS_ERR(mcde->epod)) {  in mcde_probe()
273 		ret = PTR_ERR(mcde->epod);  in mcde_probe()
277 	ret = regulator_enable(mcde->epod);  in mcde_probe()
282 	mcde->vana = devm_regulator_get(dev, "vana");  in mcde_probe()
283 	if (IS_ERR(mcde->vana)) {  in mcde_probe()
284 		ret = PTR_ERR(mcde->vana);  in mcde_probe()
288 	ret = regulator_enable(mcde->vana);  in mcde_probe()
299 	mcde->mcde_clk = devm_clk_get(dev, "mcde");  in mcde_probe()
300 	if (IS_ERR(mcde->mcde_clk)) {  in mcde_probe()
301 		dev_err(dev, "unable to get MCDE main clock\n");  in mcde_probe()
302 		ret = PTR_ERR(mcde->mcde_clk);  in mcde_probe()
305 	ret = clk_prepare_enable(mcde->mcde_clk);  in mcde_probe()
307 		dev_err(dev, "failed to enable MCDE main clock\n");  in mcde_probe()
310 	dev_info(dev, "MCDE clk rate %lu Hz\n", clk_get_rate(mcde->mcde_clk));  in mcde_probe()
312 	mcde->lcd_clk = devm_clk_get(dev, "lcd");  in mcde_probe()
313 	if (IS_ERR(mcde->lcd_clk)) {  in mcde_probe()
315 		ret = PTR_ERR(mcde->lcd_clk);  in mcde_probe()
318 	mcde->hdmi_clk = devm_clk_get(dev, "hdmi");  in mcde_probe()
319 	if (IS_ERR(mcde->hdmi_clk)) {  in mcde_probe()
321 		ret = PTR_ERR(mcde->hdmi_clk);  in mcde_probe()
326 	mcde->regs = devm_ioremap_resource(dev, res);  in mcde_probe()
327 	if (IS_ERR(mcde->regs)) {  in mcde_probe()
328 		dev_err(dev, "no MCDE regs\n");  in mcde_probe()
339 	ret = devm_request_irq(dev, irq, mcde_irq, 0, "mcde", mcde);  in mcde_probe()
351 	pid = readl(mcde->regs + MCDE_PID);  in mcde_probe()
352 	dev_info(dev, "found MCDE HW revision %d.%d (dev %d, metal fix %d)\n",  in mcde_probe()
368 	mcde_display_disable_irqs(mcde);  in mcde_probe()
369 	writel(0, mcde->regs + MCDE_IMSCERR);  in mcde_probe()
370 	writel(0xFFFFFFFF, mcde->regs + MCDE_RISERR);  in mcde_probe()
399 	 * Perform an invasive reset of the MCDE and all blocks by  in mcde_probe()
404 	ret = regulator_disable(mcde->epod);  in mcde_probe()
420 		clk_disable_unprepare(mcde->mcde_clk);  in mcde_probe()
421 		regulator_disable(mcde->vana);  in mcde_probe()
428 	clk_disable_unprepare(mcde->mcde_clk);  in mcde_probe()
430 	regulator_disable(mcde->vana);  in mcde_probe()
432 	regulator_disable(mcde->epod);  in mcde_probe()
440 	struct mcde *mcde = to_mcde(drm);  in mcde_remove()  local
443 	clk_disable_unprepare(mcde->mcde_clk);  in mcde_remove()
444 	regulator_disable(mcde->vana);  in mcde_remove()
445 	regulator_disable(mcde->epod);  in mcde_remove()
452 		.compatible = "ste,mcde",
459 		.name           = "mcde",
492 MODULE_ALIAS("platform:mcde-drm");