From 473a1997ace1a9fb545d0457549e50d17eb36175 Mon Sep 17 00:00:00 2001
From: Maarten Maathuis <madman2003@gmail.com>
Date: Sun, 22 Jun 2008 16:29:00 +0200
Subject: NV50: Initial import of kernel modesetting.

---
 linux-core/nv50_fb.c | 136 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 136 insertions(+)
 create mode 100644 linux-core/nv50_fb.c

(limited to 'linux-core/nv50_fb.c')

diff --git a/linux-core/nv50_fb.c b/linux-core/nv50_fb.c
new file mode 100644
index 00000000..b44b48ab
--- /dev/null
+++ b/linux-core/nv50_fb.c
@@ -0,0 +1,136 @@
+/*
+ * Copyright (C) 2008 Maarten Maathuis.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial
+ * portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#include "nv50_fb.h"
+#include "nv50_lut.h"
+#include "nv50_crtc.h"
+#include "nv50_display.h"
+
+static int nv50_fb_bind(struct nv50_crtc *crtc, struct nv50_fb_info *info)
+{
+	int rval = 0;
+
+	NV50_DEBUG("\n");
+
+	if (!crtc || !info) {
+		DRM_ERROR("crtc %p info %p\n",crtc, info);
+		return -EINVAL;
+	}
+
+	if (!info->block || !info->width || !info->height || !info->depth || !info->bpp) {
+		DRM_ERROR("block %p width %d height %d depth %d bpp %d\n", info->block, info->width, info->height, info->depth, info->bpp);
+		return -EINVAL;
+	}
+
+	crtc->fb->block = info->block;
+	crtc->fb->width = info->width;
+	crtc->fb->height = info->height;
+
+	crtc->fb->y = info->x;
+	crtc->fb->x = info->y;
+
+	crtc->fb->depth = info->depth;
+	crtc->fb->bpp = info->bpp;
+
+	/* update lut if needed */
+	if (crtc->fb->depth != crtc->lut->depth) {
+		int r_size = 0, g_size = 0, b_size = 0;
+		uint16_t *r_val, *g_val, *b_val;
+		int i;
+
+		switch (crtc->fb->depth) {
+			case 15:
+				r_size = 32;
+				g_size = 32;
+				b_size = 32;
+				break;
+			case 16:
+				r_size = 32;
+				g_size = 64;
+				b_size = 32;
+				break;
+			case 24:
+			default:
+				r_size = 256;
+				g_size = 256;
+				b_size = 256;
+				break;
+		}
+
+		r_val = kmalloc(r_size * sizeof(uint16_t), GFP_KERNEL);
+		g_val = kmalloc(g_size * sizeof(uint16_t), GFP_KERNEL);
+		b_val = kmalloc(b_size * sizeof(uint16_t), GFP_KERNEL);
+
+		if (!r_val || !g_val || !b_val)
+			return -ENOMEM;
+
+		/* Set the color indices. */
+		for (i = 0; i < r_size; i++) {
+			r_val[i] = i << 8;
+		}
+		for (i = 0; i < g_size; i++) {
+			g_val[i] = i << 8;
+		}
+		for (i = 0; i < b_size; i++) {
+			b_val[i] = i << 8;
+		}
+
+		rval = crtc->lut->set(crtc, r_val, g_val, b_val);
+
+		/* free before returning */
+		kfree(r_val);
+		kfree(g_val);
+		kfree(b_val);
+
+		if (rval != 0)
+			return rval;
+	}
+
+	return 0;
+}
+
+int nv50_fb_create(struct nv50_crtc *crtc)
+{
+	if (!crtc)
+		return -EINVAL;
+
+	crtc->fb = kzalloc(sizeof(struct nv50_fb), GFP_KERNEL);
+
+	crtc->fb->bind = nv50_fb_bind;
+
+	return 0;
+}
+
+int nv50_fb_destroy(struct nv50_crtc *crtc)
+{
+	if (!crtc)
+		return -EINVAL;
+
+	kfree(crtc->fb);
+	crtc->fb = NULL;
+
+	return 0;
+}
-- 
cgit v1.2.3