1 // SPDX-License-Identifier: GPL-2.0-only
5  * This is based on code and know-how in the previous frame buffer
6  * driver in drivers/video/fbdev/amba-clcd.c:
46 		.compatible = "arm,core-module-integrator",
50 		.compatible = "arm,versatile-sysreg",
54 		.compatible = "arm,realview-eb-syscon",
58 		.compatible = "arm,realview-pb1176-syscon",
62 		.compatible = "arm,realview-pb11mp-syscon",
66 		.compatible = "arm,realview-pba8-syscon",
70 		.compatible = "arm,realview-pbx-syscon",
74 		.compatible = "arm,vexpress-muxfpga",
82 		.compatible = "arm,im-pd1-syscon",
97 /* Bits 11,12,13 controls the LCD or VGA bridge type */
110 /* 0 = 24bit VGA, 1 = 18bit VGA */
115 static void pl111_integrator_enable(struct drm_device *drm, u32 format)  in pl111_integrator_enable()  argument
119 	dev_info(drm->dev, "enable Integrator CLCD connectors\n");  in pl111_integrator_enable()
125 	switch (format) {  in pl111_integrator_enable()
137 		dev_err(drm->dev, "unhandled format on Integrator 0x%08x\n",  in pl111_integrator_enable()
138 			format);  in pl111_integrator_enable()
155 static void pl111_impd1_enable(struct drm_device *drm, u32 format)  in pl111_impd1_enable()  argument
159 	dev_info(drm->dev, "enable IM-PD1 CLCD connectors\n");  in pl111_impd1_enable()
170 	dev_info(drm->dev, "disable IM-PD1 CLCD connectors\n");  in pl111_impd1_disable()
197 	dev_info(drm->dev, "disable Versatile CLCD connectors\n");  in pl111_versatile_disable()
204 static void pl111_versatile_enable(struct drm_device *drm, u32 format)  in pl111_versatile_enable()  argument
208 	dev_info(drm->dev, "enable Versatile CLCD connectors\n");  in pl111_versatile_enable()
210 	switch (format) {  in pl111_versatile_enable()
230 		dev_err(drm->dev, "unhandled format on Versatile 0x%08x\n",  in pl111_versatile_enable()
231 			format);  in pl111_versatile_enable()
250 	dev_info(drm->dev, "disable RealView CLCD connectors\n");  in pl111_realview_clcd_disable()
257 static void pl111_realview_clcd_enable(struct drm_device *drm, u32 format)  in pl111_realview_clcd_enable()  argument
259 	dev_info(drm->dev, "enable RealView CLCD connectors\n");  in pl111_realview_clcd_enable()
324  * The IM-PD1 variant is a PL110 with a bunch of broken, or not
328 	.name = "PL110 IM-PD1",
338  * This is the in-between PL110 variant found in the ARM Versatile,
394 		return -ENODEV;  in pl111_vexpress_clcd_init()
402 		return -EINVAL;  in pl111_vexpress_clcd_init()
438 	} else if (ct_clcd == dev->of_node) {  in pl111_vexpress_clcd_init()
445 		return -ENODEV;  in pl111_vexpress_clcd_init()
452 		return -EPROBE_DEFER;  in pl111_vexpress_clcd_init()
455 	map = devm_regmap_init_vexpress_config(&pdev->dev);  in pl111_vexpress_clcd_init()
465 		return -ENODEV;  in pl111_vexpress_clcd_init()
468 	priv->variant = &pl111_vexpress;  in pl111_vexpress_clcd_init()
484 		/* Non-ARM reference designs, just bail out */  in pl111_versatile_init()
488 	versatile_clcd_type = (enum versatile_clcd)clcd_id->data;  in pl111_versatile_init()
495 			dev_err(dev, "Versatile Express init failed - %d", ret);  in pl111_versatile_init()
500 	 * On the Integrator, check if we should use the IM-PD1 instead,  in pl111_versatile_init()
508 			versatile_clcd_type = (enum versatile_clcd)clcd_id->data;  in pl111_versatile_init()
521 		priv->variant = &pl110_integrator;  in pl111_versatile_init()
522 		priv->variant_display_enable = pl111_integrator_enable;  in pl111_versatile_init()
527 		priv->variant = &pl110_impd1;  in pl111_versatile_init()
528 		priv->variant_display_enable = pl111_impd1_enable;  in pl111_versatile_init()
529 		priv->variant_display_disable = pl111_impd1_disable;  in pl111_versatile_init()
530 		dev_info(dev, "set up callbacks for IM-PD1 PL110\n");  in pl111_versatile_init()
535 		priv->variant = &pl110_versatile;  in pl111_versatile_init()
536 		priv->variant_display_enable = pl111_versatile_enable;  in pl111_versatile_init()
537 		priv->variant_display_disable = pl111_versatile_disable;  in pl111_versatile_init()
543 		priv->ienb = CLCD_PL111_IENB;  in pl111_versatile_init()
544 		priv->ctrl = CLCD_PL111_CNTL;  in pl111_versatile_init()
553 		priv->variant = &pl111_realview;  in pl111_versatile_init()
554 		priv->variant_display_enable = pl111_realview_clcd_enable;  in pl111_versatile_init()
555 		priv->variant_display_disable = pl111_realview_clcd_disable;  in pl111_versatile_init()