video: tegra: add tegra display controller driver

Notable ommisions:
	* support for anything but lvds panels
	* inegration with nvhost driver to sync updates with 3D
	* FB physical geometry is not set
	* lacks interface to set overlay/window x,y offset

v2 changes:
	* suspend/resume support
	* move code into drivers/video/tegra/dc
	* modularize output support
	* clean register dumping, add debugfs register file
	* code review feedback
	* make the display controller register the framebuffer devices

Signed-off-by: Erik Gilling <konkers@android.com>

1 files changed, 86 insertions, 0 deletions

diff --git a/drivers/video/tegra/dc/dc_priv.h b/drivers/video/tegra/dc/dc_priv.h
new file mode 100644
index 000000000000..ca18ebb619c8
--- /dev/null
+++ b/drivers/video/tegra/dc/dc_priv.h
@@ -0,0 +1,86 @@
+/*
+ * drivers/video/tegra/dc/dc_priv.h
+ *
+ * Copyright (C) 2010 Google, Inc.
+ * Author: Erik Gilling <konkers@android.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef __DRIVERS_VIDEO_TEGRA_DC_DC_PRIV_H
+#define __DRIVERS_VIDEO_TEGRA_DC_DC_PRIV_H
+
+#include <linux/wait.h>
+#include <linux/list.h>
+#include <linux/io.h>
+
+struct tegra_dc;
+
+struct tegra_dc_out_ops {
+	void (* init)(struct tegra_dc *dc);
+};
+
+struct tegra_dc {
+	struct list_head		list;
+
+	struct platform_device		*pdev;
+	struct tegra_dc_platform_data	*pdata;
+
+	struct resource			*base_res;
+	void __iomem			*base;
+	int				irq;
+
+	struct clk			*clk;
+	struct clk			*host1x_clk;
+
+	struct tegra_dc_out		*out;
+	struct tegra_dc_out_ops		*out_ops;
+
+	struct tegra_dc_mode		*mode;
+
+	struct tegra_dc_win		windows[DC_N_WINDOWS];
+	int				n_windows;
+
+	wait_queue_head_t		wq;
+
+	spinlock_t			lock;
+
+	struct resource			*fb_mem;
+	struct tegra_fb_info		*fb;
+};
+
+static inline unsigned long tegra_dc_readl(struct tegra_dc *dc,
+					   unsigned long reg)
+{
+	return readl(dc->base + reg * 4);
+}
+
+static inline void tegra_dc_writel(struct tegra_dc *dc, unsigned long val,
+                       unsigned long reg)
+{
+	writel(val, dc->base + reg * 4);
+}
+
+static inline void _tegra_dc_write_table(struct tegra_dc *dc, const u32 *table,
+					 unsigned len)
+{
+	int i;
+
+	for (i = 0; i < len; i++)
+		tegra_dc_writel(dc, table[i * 2 + 1], table[i * 2]);
+}
+
+#define tegra_dc_write_table(dc, table)		\
+	_tegra_dc_write_table(dc, table, ARRAY_SIZE(table) / 2)
+
+extern struct tegra_dc_out_ops tegra_dc_rgb_ops;
+
+#endif