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2024-05-13 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e 
 kernel/drivers/gpu/drm/pl111/pl111_drv.c
....@@ -1,3 +1,4 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
12 /*
23  * (C) COPYRIGHT 2012-2013 ARM Limited. All rights reserved.
34  *
....@@ -6,27 +7,14 @@
67  * Copyright (c) 2006-2008 Intel Corporation
78  * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
89  * Copyright (C) 2011 Texas Instruments
9
- *
10
- * This program is free software and is provided to you under the terms of the
11
- * GNU General Public License version 2 as published by the Free Software
12
- * Foundation, and any use by you of this program is subject to the terms of
13
- * such GNU licence.
14
- *
1510  */
1611 
1712 /**
18
- * DOC: ARM PrimeCell PL111 CLCD Driver
13
+ * DOC: ARM PrimeCell PL110 and PL111 CLCD Driver
1914  *
20
- * The PL111 is a simple LCD controller that can support TFT and STN
21
- * displays.  This driver exposes a standard KMS interface for them.
22
- *
23
- * This driver uses the same Device Tree binding as the fbdev CLCD
24
- * driver.  While the fbdev driver supports panels that may be
25
- * connected to the CLCD internally to the CLCD driver, in DRM the
26
- * panels get split out to drivers/gpu/drm/panels/.  This means that,
27
- * in converting from using fbdev to using DRM, you also need to write
28
- * a panel driver (which may be as simple as an entry in
29
- * panel-simple.c).
15
+ * The PL110/PL111 is a simple LCD controller that can support TFT
16
+ * and STN displays. This driver exposes a standard KMS interface
17
+ * for them.
3018  *
3119  * The driver currently doesn't expose the cursor.  The DRM API for
3220  * cursors requires support for 64x64 ARGB8888 cursor images, while
....@@ -34,15 +22,12 @@
3422  * cursors.  While one could imagine trying to hack something together
3523  * to look at the ARGB8888 and program reasonable in monochrome, we
3624  * just don't expose the cursor at all instead, and leave cursor
37
- * support to the X11 software cursor layer.
25
+ * support to the application software cursor layer.
3826  *
3927  * TODO:
4028  *
4129  * - Fix race between setting plane base address and getting IRQ for
4230  *   vsync firing the pageflip completion.
43
- *
44
- * - Use the "max-memory-bandwidth" DT property to filter the
45
- *   supported formats.
4631  *
4732  * - Read back hardware state at boot to skip reprogramming the
4833  *   hardware when doing a no-op modeset.
....@@ -52,26 +37,26 @@
5237  */
5338 
5439 #include <linux/amba/bus.h>
55
-#include <linux/amba/clcd-regs.h>
56
-#include <linux/version.h>
57
-#include <linux/shmem_fs.h>
5840 #include <linux/dma-buf.h>
5941 #include <linux/module.h>
60
-#include <linux/slab.h>
6142 #include <linux/of.h>
6243 #include <linux/of_graph.h>
6344 #include <linux/of_reserved_mem.h>
45
+#include <linux/shmem_fs.h>
46
+#include <linux/slab.h>
47
+#include <linux/version.h>
6448 
65
-#include <drm/drmP.h>
6649 #include <drm/drm_atomic_helper.h>
67
-#include <drm/drm_crtc_helper.h>
50
+#include <drm/drm_bridge.h>
51
+#include <drm/drm_drv.h>
52
+#include <drm/drm_fb_cma_helper.h>
53
+#include <drm/drm_fb_helper.h>
6854 #include <drm/drm_gem_cma_helper.h>
6955 #include <drm/drm_gem_framebuffer_helper.h>
70
-#include <drm/drm_fb_helper.h>
71
-#include <drm/drm_fb_cma_helper.h>
7256 #include <drm/drm_of.h>
73
-#include <drm/drm_bridge.h>
7457 #include <drm/drm_panel.h>
58
+#include <drm/drm_probe_helper.h>
59
+#include <drm/drm_vblank.h>
7560 
7661 #include "pl111_drm.h"
7762 #include "pl111_versatile.h"
....@@ -94,10 +79,13 @@
9479 	struct drm_panel *panel = NULL;
9580 	struct drm_bridge *bridge = NULL;
9681 	bool defer = false;
97
-	int ret = 0;
82
+	int ret;
9883 	int i;
9984 
100
-	drm_mode_config_init(dev);
85
+	ret = drmm_mode_config_init(dev);
86
+	if (ret)
87
+		return ret;
88
+
10189 	mode_config = &dev->mode_config;
10290 	mode_config->funcs = &mode_config_funcs;
10391 	mode_config->min_width = 1;
....@@ -154,11 +142,11 @@
154142 		return -EPROBE_DEFER;
155143 
156144 	if (panel) {
157
-		bridge = drm_panel_bridge_add(panel,
158
-					      DRM_MODE_CONNECTOR_Unknown);
145
+		bridge = drm_panel_bridge_add_typed(panel,
146
+						    DRM_MODE_CONNECTOR_Unknown);
159147 		if (IS_ERR(bridge)) {
160148 			ret = PTR_ERR(bridge);
161
-			goto out_config;
149
+			goto finish;
162150 		}
163151 	} else if (bridge) {
164152 		dev_info(dev->dev, "Using non-panel bridge\n");
....@@ -170,7 +158,7 @@
170158 	priv->bridge = bridge;
171159 	if (panel) {
172160 		priv->panel = panel;
173
-		priv->connector = panel->connector;
161
+		priv->connector = drm_panel_bridge_connector(bridge);
174162 	}
175163 
176164 	ret = pl111_display_init(dev);
....@@ -194,8 +182,6 @@
194182 
195183 	drm_mode_config_reset(dev);
196184 
197
-	drm_fb_cma_fbdev_init(dev, priv->variant->fb_bpp, 0);
198
-
199185 	drm_kms_helper_poll_init(dev);
200186 
201187 	goto finish;
....@@ -203,8 +189,6 @@
203189 out_bridge:
204190 	if (panel)
205191 		drm_panel_bridge_remove(bridge);
206
-out_config:
207
-	drm_mode_config_cleanup(dev);
208192 finish:
209193 	return ret;
210194 }
....@@ -231,8 +215,7 @@
231215 
232216 static struct drm_driver pl111_drm_driver = {
233217 	.driver_features =
234
-		DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME | DRIVER_ATOMIC,
235
-	.lastclose = drm_fb_helper_lastclose,
218
+		DRIVER_MODESET | DRIVER_GEM | DRIVER_ATOMIC,
236219 	.ioctls = NULL,
237220 	.fops = &drm_fops,
238221 	.name = "pl111",
....@@ -246,9 +229,7 @@
246229 	.gem_vm_ops = &drm_gem_cma_vm_ops,
247230 	.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
248231 	.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
249
-	.gem_prime_import = drm_gem_prime_import,
250232 	.gem_prime_import_sg_table = pl111_gem_import_sg_table,
251
-	.gem_prime_export = drm_gem_prime_export,
252233 	.gem_prime_get_sg_table	= drm_gem_cma_prime_get_sg_table,
253234 	.gem_prime_mmap = drm_gem_cma_prime_mmap,
254235 	.gem_prime_vmap = drm_gem_cma_prime_vmap,
....@@ -332,6 +313,8 @@
332313 	if (ret < 0)
333314 		goto dev_put;
334315 
316
+	drm_fbdev_generic_setup(drm, priv->variant->fb_bpp);
317
+
335318 	return 0;
336319 
337320 dev_put:
....@@ -341,21 +324,17 @@
341324 	return ret;
342325 }
343326 
344
-static int pl111_amba_remove(struct amba_device *amba_dev)
327
+static void pl111_amba_remove(struct amba_device *amba_dev)
345328 {
346329 	struct device *dev = &amba_dev->dev;
347330 	struct drm_device *drm = amba_get_drvdata(amba_dev);
348331 	struct pl111_drm_dev_private *priv = drm->dev_private;
349332 
350333 	drm_dev_unregister(drm);
351
-	drm_fb_cma_fbdev_fini(drm);
352334 	if (priv->panel)
353335 		drm_panel_bridge_remove(priv->bridge);
354
-	drm_mode_config_cleanup(drm);
355336 	drm_dev_put(drm);
356337 	of_reserved_mem_device_release(dev);
357
-
358
-	return 0;
359338 }
360339 
361340 /*
....@@ -452,6 +431,7 @@
452431 	},
453432 	{0, 0},
454433 };
434
+MODULE_DEVICE_TABLE(amba, pl111_id_table);
455435 
456436 static struct amba_driver pl111_amba_driver __maybe_unused = {
457437 	.drv = {