initial pandora port, with hardware scaling and stuff

5 files changed, 980 insertions, 0 deletions

diff --git a/pandora/linux/fbdev.c b/pandora/linux/fbdev.c
new file mode 100644
index 0000000..9d532a5
--- /dev/null
+++ b/pandora/linux/fbdev.c
@@ -0,0 +1,255 @@
+/*
+ * (C) Gražvydas "notaz" Ignotas, 2009-2010
+ *
+ * This work is licensed under the terms of any of these licenses
+ * (at your option):
+ *  - GNU GPL, version 2 or later.
+ *  - GNU LGPL, version 2.1 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <unistd.h>
+#include <linux/fb.h>
+#include <linux/matroxfb.h>
+
+#include "fbdev.h"
+
+struct vout_fbdev {
+	int	fd;
+	void	*mem;
+	size_t	mem_size;
+	struct	fb_var_screeninfo fbvar_old;
+	struct	fb_var_screeninfo fbvar_new;
+	int	buffer_write;
+	int	fb_size;
+	int	buffer_count;
+	int	top_border, bottom_border;
+};
+
+void *vout_fbdev_flip(struct vout_fbdev *fbdev)
+{
+	int draw_buf;
+
+	if (fbdev->buffer_count < 2)
+		return fbdev->mem;
+
+	draw_buf = fbdev->buffer_write;
+	fbdev->buffer_write++;
+	if (fbdev->buffer_write >= fbdev->buffer_count)
+		fbdev->buffer_write = 0;
+
+	fbdev->fbvar_new.yoffset = 
+		(fbdev->top_border + fbdev->fbvar_new.yres + fbdev->bottom_border) * draw_buf +
+		fbdev->top_border;
+
+	ioctl(fbdev->fd, FBIOPAN_DISPLAY, &fbdev->fbvar_new);
+
+	return (char *)fbdev->mem + fbdev->fb_size * fbdev->buffer_write;
+}
+
+void vout_fbdev_wait_vsync(struct vout_fbdev *fbdev)
+{
+	int arg = 0;
+	ioctl(fbdev->fd, FBIO_WAITFORVSYNC, &arg);
+}
+
+/* it is recommended to call vout_fbdev_clear() before this */
+void *vout_fbdev_resize(struct vout_fbdev *fbdev, int w, int h, int bpp,
+		      int left_border, int right_border, int top_border, int bottom_border, int buffer_cnt)
+{
+	int w_total = left_border + w + right_border;
+	int h_total = top_border + h + bottom_border;
+	size_t mem_size;
+	int ret;
+
+	// unblank to be sure the mode is really accepted
+	ioctl(fbdev->fd, FBIOBLANK, FB_BLANK_UNBLANK);
+
+	if (fbdev->fbvar_new.bits_per_pixel != bpp ||
+			fbdev->fbvar_new.xres != w ||
+			fbdev->fbvar_new.yres != h ||
+			fbdev->fbvar_new.xres_virtual != w_total||
+			fbdev->fbvar_new.yres_virtual < h_total ||
+			fbdev->fbvar_new.xoffset != left_border ||
+			fbdev->buffer_count != buffer_cnt)
+	{
+		if (fbdev->fbvar_new.bits_per_pixel != bpp ||
+				w != fbdev->fbvar_new.xres || h != fbdev->fbvar_new.yres)
+			printf(" switching to %dx%d@%d\n", w, h, bpp);
+
+		fbdev->fbvar_new.xres = w;
+		fbdev->fbvar_new.yres = h;
+		fbdev->fbvar_new.xres_virtual = w_total;
+		fbdev->fbvar_new.yres_virtual = h_total * buffer_cnt;
+		fbdev->fbvar_new.xoffset = left_border;
+		fbdev->fbvar_new.yoffset = top_border;
+		fbdev->fbvar_new.bits_per_pixel = bpp;
+		fbdev->fbvar_new.nonstd = 0; // can set YUV here on omapfb
+		fbdev->buffer_count = buffer_cnt;
+		fbdev->buffer_write = 1;
+
+		// seems to help a bit to avoid glitches
+		vout_fbdev_wait_vsync(fbdev);
+
+		ret = ioctl(fbdev->fd, FBIOPUT_VSCREENINFO, &fbdev->fbvar_new);
+		if (ret == -1) {
+			// retry with no multibuffering
+			fbdev->fbvar_new.yres_virtual = h_total;
+			ret = ioctl(fbdev->fd, FBIOPUT_VSCREENINFO, &fbdev->fbvar_new);
+			if (ret == -1) {
+				perror("FBIOPUT_VSCREENINFO ioctl");
+				return NULL;
+			}
+			fbdev->buffer_count = 1;
+			fbdev->buffer_write = 0;
+			fprintf(stderr, "Warning: failed to increase virtual resolution, "
+					"multibuffering disabled\n");
+		}
+
+	}
+
+	fbdev->fb_size = w_total * h_total * bpp / 8;
+	fbdev->top_border = top_border;
+	fbdev->bottom_border = bottom_border;
+
+	mem_size = fbdev->fb_size * fbdev->buffer_count;
+	if (fbdev->mem_size >= mem_size)
+		goto out;
+
+	if (fbdev->mem != NULL)
+		munmap(fbdev->mem, fbdev->mem_size);
+
+	fbdev->mem = mmap(0, mem_size, PROT_WRITE|PROT_READ, MAP_SHARED, fbdev->fd, 0);
+	if (fbdev->mem == MAP_FAILED && fbdev->buffer_count > 1) {
+		fprintf(stderr, "Warning: can't map %zd bytes, doublebuffering disabled\n", mem_size);
+		fbdev->buffer_count = 1;
+		fbdev->buffer_write = 0;
+		mem_size = fbdev->fb_size;
+		fbdev->mem = mmap(0, mem_size, PROT_WRITE|PROT_READ, MAP_SHARED, fbdev->fd, 0);
+	}
+	if (fbdev->mem == MAP_FAILED) {
+		fbdev->mem = NULL;
+		fbdev->mem_size = 0;
+		perror("mmap framebuffer");
+		return NULL;
+	}
+
+	fbdev->mem_size = mem_size;
+
+out:
+	return (char *)fbdev->mem + fbdev->fb_size * fbdev->buffer_write;
+}
+
+void vout_fbdev_clear(struct vout_fbdev *fbdev)
+{
+	memset(fbdev->mem, 0, fbdev->mem_size);
+}
+
+void vout_fbdev_clear_lines(struct vout_fbdev *fbdev, int y, int count)
+{
+	int stride = fbdev->fbvar_new.xres_virtual * fbdev->fbvar_new.bits_per_pixel / 8;
+	int i;
+
+	if (y + count > fbdev->top_border + fbdev->fbvar_new.yres)
+		count = fbdev->top_border + fbdev->fbvar_new.yres - y;
+
+	if (y >= 0 && count > 0)
+		for (i = 0; i < fbdev->buffer_count; i++)
+			memset((char *)fbdev->mem + fbdev->fb_size * i + y * stride, 0, stride * count);
+}
+
+int vout_fbdev_get_fd(struct vout_fbdev *fbdev)
+{
+	return fbdev->fd;
+}
+
+struct vout_fbdev *vout_fbdev_init(const char *fbdev_name, int *w, int *h, int bpp, int buffer_cnt)
+{
+	struct vout_fbdev *fbdev;
+	int req_w, req_h;
+	void *pret;
+	int ret;
+
+	fbdev = calloc(1, sizeof(*fbdev));
+	if (fbdev == NULL)
+		return NULL;
+
+	fbdev->fd = open(fbdev_name, O_RDWR);
+	if (fbdev->fd == -1) {
+		fprintf(stderr, "%s: ", fbdev_name);
+		perror("open");
+		goto fail_open;
+	}
+
+	ret = ioctl(fbdev->fd, FBIOGET_VSCREENINFO, &fbdev->fbvar_old);
+	if (ret == -1) {
+		perror("FBIOGET_VSCREENINFO ioctl");
+		goto fail;
+	}
+
+	fbdev->fbvar_new = fbdev->fbvar_old;
+
+	req_w = fbdev->fbvar_new.xres;
+	if (*w != 0)
+		req_w = *w;
+	req_h = fbdev->fbvar_new.yres;
+	if (*h != 0)
+		req_h = *h;
+
+	pret = vout_fbdev_resize(fbdev, req_w, req_h, bpp, 0, 0, 0, 0, buffer_cnt);
+	if (pret == NULL)
+		goto fail;
+
+	printf("%s: %ix%i@%d\n", fbdev_name, fbdev->fbvar_new.xres, fbdev->fbvar_new.yres,
+		fbdev->fbvar_new.bits_per_pixel);
+	*w = fbdev->fbvar_new.xres;
+	*h = fbdev->fbvar_new.yres;
+
+	memset(fbdev->mem, 0, fbdev->mem_size);
+
+	// some checks
+	ret = 0;
+	ret = ioctl(fbdev->fd, FBIO_WAITFORVSYNC, &ret);
+	if (ret != 0)
+		fprintf(stderr, "Warning: vsync doesn't seem to be supported\n");
+
+	if (fbdev->buffer_count > 1) {
+		fbdev->buffer_write = 0;
+		fbdev->fbvar_new.yoffset = fbdev->fbvar_new.yres * (fbdev->buffer_count - 1);
+		ret = ioctl(fbdev->fd, FBIOPAN_DISPLAY, &fbdev->fbvar_new);
+		if (ret != 0) {
+			fbdev->buffer_count = 1;
+			fprintf(stderr, "Warning: can't pan display, doublebuffering disabled\n");
+		}
+	}
+
+	printf("fbdev initialized.\n");
+	return fbdev;
+
+fail:
+	close(fbdev->fd);
+fail_open:
+	free(fbdev);
+	return NULL;
+}
+
+void vout_fbdev_finish(struct vout_fbdev *fbdev)
+{
+	ioctl(fbdev->fd, FBIOPUT_VSCREENINFO, &fbdev->fbvar_old);
+	if (fbdev->mem != MAP_FAILED)
+		munmap(fbdev->mem, fbdev->mem_size);
+	if (fbdev->fd >= 0)
+		close(fbdev->fd);
+	fbdev->mem = NULL;
+	fbdev->fd = -1;
+	free(fbdev);
+}
+
diff --git a/pandora/linux/fbdev.h b/pandora/linux/fbdev.h
new file mode 100644
index 0000000..2db9163
--- /dev/null
+++ b/pandora/linux/fbdev.h
@@ -0,0 +1,12 @@
+struct vout_fbdev;
+
+struct vout_fbdev *vout_fbdev_init(const char *fbdev_name, int *w, int *h, int bpp, int buffer_count);
+void *vout_fbdev_flip(struct vout_fbdev *fbdev);
+void  vout_fbdev_wait_vsync(struct vout_fbdev *fbdev);
+void *vout_fbdev_resize(struct vout_fbdev *fbdev, int w, int h, int bpp,
+			int left_border, int right_border, int top_border, int bottom_border,
+			int buffer_count);
+void  vout_fbdev_clear(struct vout_fbdev *fbdev);
+void  vout_fbdev_clear_lines(struct vout_fbdev *fbdev, int y, int count);
+int   vout_fbdev_get_fd(struct vout_fbdev *fbdev);
+void  vout_fbdev_finish(struct vout_fbdev *fbdev);
diff --git a/pandora/linux/omapfb.h b/pandora/linux/omapfb.h
new file mode 100644
index 0000000..f156e3a
--- /dev/null
+++ b/pandora/linux/omapfb.h
@@ -0,0 +1,427 @@
+/*
+ * File: arch/arm/plat-omap/include/mach/omapfb.h
+ *
+ * Framebuffer driver for TI OMAP boards
+ *
+ * Copyright (C) 2004 Nokia Corporation
+ * Author: Imre Deak <imre.deak@nokia.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+#ifndef __OMAPFB_H
+#define __OMAPFB_H
+
+#include <asm/ioctl.h>
+#include <asm/types.h>
+
+/* IOCTL commands. */
+
+#define OMAP_IOW(num, dtype)	_IOW('O', num, dtype)
+#define OMAP_IOR(num, dtype)	_IOR('O', num, dtype)
+#define OMAP_IOWR(num, dtype)	_IOWR('O', num, dtype)
+#define OMAP_IO(num)		_IO('O', num)
+
+#define OMAPFB_MIRROR		OMAP_IOW(31, int)
+#define OMAPFB_SYNC_GFX		OMAP_IO(37)
+#define OMAPFB_VSYNC		OMAP_IO(38)
+#define OMAPFB_SET_UPDATE_MODE	OMAP_IOW(40, int)
+#define OMAPFB_GET_CAPS		OMAP_IOR(42, struct omapfb_caps)
+#define OMAPFB_GET_UPDATE_MODE	OMAP_IOW(43, int)
+#define OMAPFB_LCD_TEST		OMAP_IOW(45, int)
+#define OMAPFB_CTRL_TEST	OMAP_IOW(46, int)
+#define OMAPFB_UPDATE_WINDOW_OLD OMAP_IOW(47, struct omapfb_update_window_old)
+#define OMAPFB_SET_COLOR_KEY	OMAP_IOW(50, struct omapfb_color_key)
+#define OMAPFB_GET_COLOR_KEY	OMAP_IOW(51, struct omapfb_color_key)
+#define OMAPFB_SETUP_PLANE	OMAP_IOW(52, struct omapfb_plane_info)
+#define OMAPFB_QUERY_PLANE	OMAP_IOW(53, struct omapfb_plane_info)
+#define OMAPFB_UPDATE_WINDOW	OMAP_IOW(54, struct omapfb_update_window)
+#define OMAPFB_SETUP_MEM	OMAP_IOW(55, struct omapfb_mem_info)
+#define OMAPFB_QUERY_MEM	OMAP_IOW(56, struct omapfb_mem_info)
+#define OMAPFB_WAITFORVSYNC	OMAP_IO(57)
+#define OMAPFB_MEMORY_READ	OMAP_IOR(58, struct omapfb_memory_read)
+
+#ifndef FBIO_WAITFORVSYNC
+#define FBIO_WAITFORVSYNC	_IOW('F', 0x20, u_int32_t)
+#endif
+
+#define OMAPFB_CAPS_GENERIC_MASK	0x00000fff
+#define OMAPFB_CAPS_LCDC_MASK		0x00fff000
+#define OMAPFB_CAPS_PANEL_MASK		0xff000000
+
+#define OMAPFB_CAPS_MANUAL_UPDATE	0x00001000
+#define OMAPFB_CAPS_TEARSYNC		0x00002000
+#define OMAPFB_CAPS_PLANE_RELOCATE_MEM	0x00004000
+#define OMAPFB_CAPS_PLANE_SCALE		0x00008000
+#define OMAPFB_CAPS_WINDOW_PIXEL_DOUBLE	0x00010000
+#define OMAPFB_CAPS_WINDOW_SCALE	0x00020000
+#define OMAPFB_CAPS_WINDOW_OVERLAY	0x00040000
+#define OMAPFB_CAPS_WINDOW_ROTATE	0x00080000
+#define OMAPFB_CAPS_SET_BACKLIGHT	0x01000000
+
+/* Values from DSP must map to lower 16-bits */
+#define OMAPFB_FORMAT_MASK		0x00ff
+#define OMAPFB_FORMAT_FLAG_DOUBLE	0x0100
+#define OMAPFB_FORMAT_FLAG_TEARSYNC	0x0200
+#define OMAPFB_FORMAT_FLAG_FORCE_VSYNC	0x0400
+#define OMAPFB_FORMAT_FLAG_ENABLE_OVERLAY	0x0800
+#define OMAPFB_FORMAT_FLAG_DISABLE_OVERLAY	0x1000
+
+#define OMAPFB_EVENT_READY	1
+#define OMAPFB_EVENT_DISABLED	2
+
+#define OMAPFB_MEMTYPE_SDRAM		0
+#define OMAPFB_MEMTYPE_SRAM		1
+#define OMAPFB_MEMTYPE_MAX		1
+
+enum omapfb_color_format {
+	OMAPFB_COLOR_RGB565 = 0,
+	OMAPFB_COLOR_YUV422,
+	OMAPFB_COLOR_YUV420,
+	OMAPFB_COLOR_CLUT_8BPP,
+	OMAPFB_COLOR_CLUT_4BPP,
+	OMAPFB_COLOR_CLUT_2BPP,
+	OMAPFB_COLOR_CLUT_1BPP,
+	OMAPFB_COLOR_RGB444,
+	OMAPFB_COLOR_YUY422,
+
+	OMAPFB_COLOR_ARGB16,
+	OMAPFB_COLOR_RGB24U,	/* RGB24, 32-bit container */
+	OMAPFB_COLOR_RGB24P,	/* RGB24, 24-bit container */
+	OMAPFB_COLOR_ARGB32,
+	OMAPFB_COLOR_RGBA32,
+	OMAPFB_COLOR_RGBX32,
+};
+
+struct omapfb_update_window {
+	__u32 x, y;
+	__u32 width, height;
+	__u32 format;
+	__u32 out_x, out_y;
+	__u32 out_width, out_height;
+	__u32 reserved[8];
+};
+
+struct omapfb_update_window_old {
+	__u32 x, y;
+	__u32 width, height;
+	__u32 format;
+};
+
+enum omapfb_plane {
+	OMAPFB_PLANE_GFX = 0,
+	OMAPFB_PLANE_VID1,
+	OMAPFB_PLANE_VID2,
+};
+
+enum omapfb_channel_out {
+	OMAPFB_CHANNEL_OUT_LCD = 0,
+	OMAPFB_CHANNEL_OUT_DIGIT,
+};
+
+struct omapfb_plane_info {
+	__u32 pos_x;
+	__u32 pos_y;
+	__u8  enabled;
+	__u8  channel_out;
+	__u8  mirror;
+	__u8  reserved1;
+	__u32 out_width;
+	__u32 out_height;
+	__u32 reserved2[12];
+};
+
+struct omapfb_mem_info {
+	__u32 size;
+	__u8  type;
+	__u8  reserved[3];
+};
+
+struct omapfb_caps {
+	__u32 ctrl;
+	__u32 plane_color;
+	__u32 wnd_color;
+};
+
+enum omapfb_color_key_type {
+	OMAPFB_COLOR_KEY_DISABLED = 0,
+	OMAPFB_COLOR_KEY_GFX_DST,
+	OMAPFB_COLOR_KEY_VID_SRC,
+};
+
+struct omapfb_color_key {
+	__u8  channel_out;
+	__u32 background;
+	__u32 trans_key;
+	__u8  key_type;
+};
+
+enum omapfb_update_mode {
+	OMAPFB_UPDATE_DISABLED = 0,
+	OMAPFB_AUTO_UPDATE,
+	OMAPFB_MANUAL_UPDATE
+};
+
+struct omapfb_memory_read {
+	__u16 x;
+	__u16 y;
+	__u16 w;
+	__u16 h;
+	size_t buffer_size;
+	void *buffer;
+};
+
+#ifdef __KERNEL__
+
+#include <linux/completion.h>
+#include <linux/interrupt.h>
+#include <linux/fb.h>
+#include <linux/mutex.h>
+
+#include <mach/board.h>
+
+#define OMAP_LCDC_INV_VSYNC             0x0001
+#define OMAP_LCDC_INV_HSYNC             0x0002
+#define OMAP_LCDC_INV_PIX_CLOCK         0x0004
+#define OMAP_LCDC_INV_OUTPUT_EN         0x0008
+#define OMAP_LCDC_HSVS_RISING_EDGE      0x0010
+#define OMAP_LCDC_HSVS_OPPOSITE         0x0020
+
+#define OMAP_LCDC_SIGNAL_MASK		0x003f
+
+#define OMAP_LCDC_PANEL_TFT		0x0100
+
+#define OMAPFB_PLANE_XRES_MIN		8
+#define OMAPFB_PLANE_YRES_MIN		8
+
+#ifdef CONFIG_ARCH_OMAP1
+#define OMAPFB_PLANE_NUM		1
+#else
+#define OMAPFB_PLANE_NUM		3
+#endif
+
+struct omapfb_device;
+
+struct lcd_panel {
+	const char	*name;
+	int		config;		/* TFT/STN, signal inversion */
+	int		bpp;		/* Pixel format in fb mem */
+	int		data_lines;	/* Lines on LCD HW interface */
+
+	int		x_res, y_res;
+	int		pixel_clock;	/* In kHz */
+	int		hsw;		/* Horizontal synchronization
+					   pulse width */
+	int		hfp;		/* Horizontal front porch */
+	int		hbp;		/* Horizontal back porch */
+	int		vsw;		/* Vertical synchronization
+					   pulse width */
+	int		vfp;		/* Vertical front porch */
+	int		vbp;		/* Vertical back porch */
+	int		acb;		/* ac-bias pin frequency */
+	int		pcd;		/* pixel clock divider.
+					   Obsolete use pixel_clock instead */
+
+	int		(*init)		(struct lcd_panel *panel,
+					 struct omapfb_device *fbdev);
+	void		(*cleanup)	(struct lcd_panel *panel);
+	int		(*enable)	(struct lcd_panel *panel);
+	void		(*disable)	(struct lcd_panel *panel);
+	unsigned long	(*get_caps)	(struct lcd_panel *panel);
+	int		(*set_bklight_level)(struct lcd_panel *panel,
+					     unsigned int level);
+	unsigned int	(*get_bklight_level)(struct lcd_panel *panel);
+	unsigned int	(*get_bklight_max)  (struct lcd_panel *panel);
+	int		(*run_test)	(struct lcd_panel *panel, int test_num);
+};
+
+struct extif_timings {
+	int cs_on_time;
+	int cs_off_time;
+	int we_on_time;
+	int we_off_time;
+	int re_on_time;
+	int re_off_time;
+	int we_cycle_time;
+	int re_cycle_time;
+	int cs_pulse_width;
+	int access_time;
+
+	int clk_div;
+
+	u32 tim[5];		/* set by extif->convert_timings */
+
+	int converted;
+};
+
+struct lcd_ctrl_extif {
+	int  (*init)		(struct omapfb_device *fbdev);
+	void (*cleanup)		(void);
+	void (*get_clk_info)	(u32 *clk_period, u32 *max_clk_div);
+	unsigned long (*get_max_tx_rate)(void);
+	int  (*convert_timings)	(struct extif_timings *timings);
+	void (*set_timings)	(const struct extif_timings *timings);
+	void (*set_bits_per_cycle)(int bpc);
+	void (*write_command)	(const void *buf, unsigned int len);
+	void (*read_data)	(void *buf, unsigned int len);
+	void (*write_data)	(const void *buf, unsigned int len);
+	void (*transfer_area)	(int width, int height,
+				 void (callback)(void * data), void *data);
+	int  (*setup_tearsync)	(unsigned pin_cnt,
+				 unsigned hs_pulse_time, unsigned vs_pulse_time,
+				 int hs_pol_inv, int vs_pol_inv, int div);
+	int  (*enable_tearsync) (int enable, unsigned line);
+
+	unsigned long		max_transmit_size;
+};
+
+struct omapfb_notifier_block {
+	struct notifier_block	nb;
+	void			*data;
+	int			plane_idx;
+};
+
+typedef int (*omapfb_notifier_callback_t)(struct notifier_block *,
+					  unsigned long event,
+					  void *fbi);
+
+struct omapfb_mem_region {
+	u32		paddr;
+	void __iomem	*vaddr;
+	unsigned long	size;
+	u8		type;		/* OMAPFB_PLANE_MEM_* */
+	enum omapfb_color_format format;/* OMAPFB_COLOR_* */
+	unsigned	format_used:1;	/* Must be set when format is set.
+					 * Needed b/c of the badly chosen 0
+					 * base for OMAPFB_COLOR_* values
+					 */
+	unsigned	alloc:1;	/* allocated by the driver */
+	unsigned	map:1;		/* kernel mapped by the driver */
+};
+
+struct omapfb_mem_desc {
+	int				region_cnt;
+	struct omapfb_mem_region	region[OMAPFB_PLANE_NUM];
+};
+
+struct lcd_ctrl {
+	const char	*name;
+	void		*data;
+
+	int		(*init)		  (struct omapfb_device *fbdev,
+					   int ext_mode,
+					   struct omapfb_mem_desc *req_md);
+	void		(*cleanup)	  (void);
+	void		(*bind_client)	  (struct omapfb_notifier_block *nb);
+	void		(*get_caps)	  (int plane, struct omapfb_caps *caps);
+	int		(*set_update_mode)(enum omapfb_update_mode mode);
+	enum omapfb_update_mode (*get_update_mode)(void);
+	int		(*setup_plane)	  (int plane, int channel_out,
+					   unsigned long offset,
+					   int screen_width,
+					   int pos_x, int pos_y, int width,
+					   int height, int color_mode);
+	int		(*set_rotate)	  (int angle);
+	int		(*setup_mem)	  (int plane, size_t size,
+					   int mem_type, unsigned long *paddr);
+	int		(*mmap)		  (struct fb_info *info,
+					   struct vm_area_struct *vma);
+	int		(*set_scale)	  (int plane,
+					   int orig_width, int orig_height,
+					   int out_width, int out_height);
+	int		(*enable_plane)	  (int plane, int enable);
+	int		(*update_window)  (struct fb_info *fbi,
+					   struct omapfb_update_window *win,
+					   void (*callback)(void *),
+					   void *callback_data);
+	void		(*sync)		  (void);
+	void		(*suspend)	  (void);
+	void		(*resume)	  (void);
+	int		(*run_test)	  (int test_num);
+	int		(*setcolreg)	  (u_int regno, u16 red, u16 green,
+					   u16 blue, u16 transp,
+					   int update_hw_mem);
+	int		(*set_color_key)  (struct omapfb_color_key *ck);
+	int		(*get_color_key)  (struct omapfb_color_key *ck);
+};
+
+enum omapfb_state {
+	OMAPFB_DISABLED	= 0,
+	OMAPFB_SUSPENDED= 99,
+	OMAPFB_ACTIVE	= 100
+};
+
+struct omapfb_plane_struct {
+	int				idx;
+	struct omapfb_plane_info	info;
+	enum omapfb_color_format	color_mode;
+	struct omapfb_device		*fbdev;
+};
+
+struct omapfb_device {
+	int			state;
+	int                     ext_lcdc;               /* Using external
+                                                           LCD controller */
+	struct mutex		rqueue_mutex;
+
+	int			palette_size;
+	u32			pseudo_palette[17];
+
+	struct lcd_panel	*panel;			/* LCD panel */
+	const struct lcd_ctrl	*ctrl;			/* LCD controller */
+	const struct lcd_ctrl	*int_ctrl;		/* internal LCD ctrl */
+	struct lcd_ctrl_extif	*ext_if;		/* LCD ctrl external
+							   interface */
+	struct device		*dev;
+	struct fb_var_screeninfo	new_var;	/* for mode changes */
+
+	struct omapfb_mem_desc		mem_desc;
+	struct fb_info			*fb_info[OMAPFB_PLANE_NUM];
+};
+
+struct omapfb_platform_data {
+	struct omap_lcd_config		lcd;
+	struct omapfb_mem_desc		mem_desc;
+	void				*ctrl_platform_data;
+};
+
+#ifdef CONFIG_ARCH_OMAP1
+extern struct lcd_ctrl omap1_lcd_ctrl;
+#else
+extern struct lcd_ctrl omap2_disp_ctrl;
+#endif
+
+extern void omapfb_set_platform_data(struct omapfb_platform_data *data);
+
+extern void omapfb_reserve_sdram(void);
+extern void omapfb_register_panel(struct lcd_panel *panel);
+extern void omapfb_write_first_pixel(struct omapfb_device *fbdev, u16 pixval);
+extern void omapfb_notify_clients(struct omapfb_device *fbdev,
+				  unsigned long event);
+extern int  omapfb_register_client(struct omapfb_notifier_block *nb,
+				   omapfb_notifier_callback_t callback,
+				   void *callback_data);
+extern int  omapfb_unregister_client(struct omapfb_notifier_block *nb);
+extern int  omapfb_update_window_async(struct fb_info *fbi,
+				       struct omapfb_update_window *win,
+				       void (*callback)(void *),
+				       void *callback_data);
+
+/* in arch/arm/plat-omap/fb.c */
+extern void omapfb_set_ctrl_platform_data(void *pdata);
+
+#endif /* __KERNEL__ */
+
+#endif /* __OMAPFB_H */
diff --git a/pandora/linux/xenv.c b/pandora/linux/xenv.c
new file mode 100644
index 0000000..8295b2c
--- /dev/null
+++ b/pandora/linux/xenv.c
@@ -0,0 +1,281 @@
+/*
+ * (C) Gražvydas "notaz" Ignotas, 2009-2011
+ *
+ * This work is licensed under the terms of any of these licenses
+ * (at your option):
+ *  - GNU GPL, version 2 or later.
+ *  - GNU LGPL, version 2.1 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <pthread.h>
+
+#include <dlfcn.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/XKBlib.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include <termios.h>
+#include <linux/kd.h>
+
+#define PFX "xenv: "
+
+#define FPTR(f) typeof(f) * p##f
+#define FPTR_LINK(xf, dl, f) { \
+	xf.p##f = dlsym(dl, #f); \
+	if (xf.p##f == NULL) { \
+		fprintf(stderr, "missing symbol: %s\n", #f); \
+		goto fail; \
+	} \
+}
+
+struct xstuff {
+	Display *display;
+	FPTR(XCreateBitmapFromData);
+	FPTR(XCreatePixmapCursor);
+	FPTR(XFreePixmap);
+	FPTR(XOpenDisplay);
+	FPTR(XDisplayName);
+	FPTR(XCloseDisplay);
+	FPTR(XCreateSimpleWindow);
+	FPTR(XChangeWindowAttributes);
+	FPTR(XSelectInput);
+	FPTR(XMapWindow);
+	FPTR(XNextEvent);
+	FPTR(XCheckTypedEvent);
+	FPTR(XUnmapWindow);
+	FPTR(XGrabKeyboard);
+	FPTR(XPending);
+	FPTR(XLookupKeysym);
+	FPTR(XkbSetDetectableAutoRepeat);
+};
+
+static struct xstuff g_xstuff;
+
+static Cursor transparent_cursor(struct xstuff *xf, Display *display, Window win)
+{
+	Cursor cursor;
+	Pixmap pix;
+	XColor dummy;
+	char d = 0;
+
+	memset(&dummy, 0, sizeof(dummy));
+	pix = xf->pXCreateBitmapFromData(display, win, &d, 1, 1);
+	cursor = xf->pXCreatePixmapCursor(display, pix, pix,
+			&dummy, &dummy, 0, 0);
+	xf->pXFreePixmap(display, pix);
+	return cursor;
+}
+
+static int x11h_init(void)
+{
+	unsigned int display_width, display_height;
+	Display *display;
+	XSetWindowAttributes attributes;
+	Window win;
+	Visual *visual;
+	void *x11lib;
+	int screen;
+
+	memset(&g_xstuff, 0, sizeof(g_xstuff));
+	x11lib = dlopen("libX11.so.6", RTLD_LAZY);
+	if (x11lib == NULL) {
+		fprintf(stderr, "libX11.so load failed:\n%s\n", dlerror());
+		goto fail;
+	}
+	FPTR_LINK(g_xstuff, x11lib, XCreateBitmapFromData);
+	FPTR_LINK(g_xstuff, x11lib, XCreatePixmapCursor);
+	FPTR_LINK(g_xstuff, x11lib, XFreePixmap);
+	FPTR_LINK(g_xstuff, x11lib, XOpenDisplay);
+	FPTR_LINK(g_xstuff, x11lib, XDisplayName);
+	FPTR_LINK(g_xstuff, x11lib, XCloseDisplay);
+	FPTR_LINK(g_xstuff, x11lib, XCreateSimpleWindow);
+	FPTR_LINK(g_xstuff, x11lib, XChangeWindowAttributes);
+	FPTR_LINK(g_xstuff, x11lib, XSelectInput);
+	FPTR_LINK(g_xstuff, x11lib, XMapWindow);
+	FPTR_LINK(g_xstuff, x11lib, XNextEvent);
+	FPTR_LINK(g_xstuff, x11lib, XCheckTypedEvent);
+	FPTR_LINK(g_xstuff, x11lib, XUnmapWindow);
+	FPTR_LINK(g_xstuff, x11lib, XGrabKeyboard);
+	FPTR_LINK(g_xstuff, x11lib, XPending);
+	FPTR_LINK(g_xstuff, x11lib, XLookupKeysym);
+	FPTR_LINK(g_xstuff, x11lib, XkbSetDetectableAutoRepeat);
+
+	//XInitThreads();
+
+	g_xstuff.display = display = g_xstuff.pXOpenDisplay(NULL);
+	if (display == NULL)
+	{
+		fprintf(stderr, "cannot connect to X server %s, X handling disabled.\n",
+				g_xstuff.pXDisplayName(NULL));
+		goto fail2;
+	}
+
+	visual = DefaultVisual(display, 0);
+	if (visual->class != TrueColor)
+		fprintf(stderr, PFX "warning: non true color visual\n");
+
+	printf(PFX "X vendor: %s, rel: %d, display: %s, protocol ver: %d.%d\n", ServerVendor(display),
+		VendorRelease(display), DisplayString(display), ProtocolVersion(display),
+		ProtocolRevision(display));
+
+	screen = DefaultScreen(display);
+
+	display_width = DisplayWidth(display, screen);
+	display_height = DisplayHeight(display, screen);
+	printf(PFX "display is %dx%d\n", display_width, display_height);
+
+	win = g_xstuff.pXCreateSimpleWindow(display,
+			RootWindow(display, screen),
+			0, 0, display_width, display_height, 0,
+			BlackPixel(display, screen),
+			BlackPixel(display, screen));
+
+	attributes.override_redirect = True;
+	attributes.cursor = transparent_cursor(&g_xstuff, display, win);
+	g_xstuff.pXChangeWindowAttributes(display, win, CWOverrideRedirect | CWCursor, &attributes);
+
+	g_xstuff.pXSelectInput(display, win, ExposureMask | FocusChangeMask | KeyPressMask | KeyReleaseMask);
+	g_xstuff.pXMapWindow(display, win);
+	g_xstuff.pXGrabKeyboard(display, win, False, GrabModeAsync, GrabModeAsync, CurrentTime);
+	g_xstuff.pXkbSetDetectableAutoRepeat(display, 1, NULL);
+	// XSetIOErrorHandler
+
+	return 0;
+fail2:
+	dlclose(x11lib);
+fail:
+	g_xstuff.display = NULL;
+	fprintf(stderr, "x11 handling disabled.\n");
+	return -1;
+}
+
+static int x11h_update(int *is_down)
+{
+	XEvent evt;
+
+	while (g_xstuff.pXPending(g_xstuff.display))
+	{
+		g_xstuff.pXNextEvent(g_xstuff.display, &evt);
+		switch (evt.type)
+		{
+			case Expose:
+				while (g_xstuff.pXCheckTypedEvent(g_xstuff.display, Expose, &evt))
+					;
+				break;
+
+			case KeyPress:
+				*is_down = 1;
+				return g_xstuff.pXLookupKeysym(&evt.xkey, 0);
+
+			case KeyRelease:
+				*is_down = 0;
+				return g_xstuff.pXLookupKeysym(&evt.xkey, 0);
+				// printf("press %d\n", evt.xkey.keycode);
+		}
+	}
+
+	return NoSymbol;
+}
+
+static struct termios g_kbd_termios_saved;
+static int g_kbdfd;
+
+static int tty_init(void)
+{
+	struct termios kbd_termios;
+	int mode;
+
+	g_kbdfd = open("/dev/tty", O_RDWR);
+	if (g_kbdfd == -1) {
+		perror(PFX "open /dev/tty");
+		return -1;
+	}
+
+	if (ioctl(g_kbdfd, KDGETMODE, &mode) == -1) {
+		perror(PFX "(not hiding FB): KDGETMODE");
+		goto fail;
+	}
+
+	if (tcgetattr(g_kbdfd, &kbd_termios) == -1) {
+		perror(PFX "tcgetattr");
+		goto fail;
+	}
+
+	g_kbd_termios_saved = kbd_termios;
+	kbd_termios.c_lflag &= ~(ICANON | ECHO); // | ISIG);
+	kbd_termios.c_iflag &= ~(ISTRIP | IGNCR | ICRNL | INLCR | IXOFF | IXON);
+	kbd_termios.c_cc[VMIN] = 0;
+	kbd_termios.c_cc[VTIME] = 0;
+
+	if (tcsetattr(g_kbdfd, TCSAFLUSH, &kbd_termios) == -1) {
+		perror(PFX "tcsetattr");
+		goto fail;
+	}
+
+	if (ioctl(g_kbdfd, KDSETMODE, KD_GRAPHICS) == -1) {
+		perror(PFX "KDSETMODE KD_GRAPHICS");
+		tcsetattr(g_kbdfd, TCSAFLUSH, &g_kbd_termios_saved);
+		goto fail;
+	}
+
+	return 0;
+
+fail:
+	close(g_kbdfd);
+	g_kbdfd = -1;
+	return -1;
+}
+
+static void tty_end(void)
+{
+	if (g_kbdfd <= 0)
+		return;
+
+	if (ioctl(g_kbdfd, KDSETMODE, KD_TEXT) == -1)
+		perror(PFX "KDSETMODE KD_TEXT");
+
+	if (tcsetattr(g_kbdfd, TCSAFLUSH, &g_kbd_termios_saved) == -1)
+		perror(PFX "tcsetattr");
+
+	close(g_kbdfd);
+	g_kbdfd = -1;
+}
+
+int xenv_init(void)
+{
+	int ret;
+
+	ret = x11h_init();
+	if (ret == 0)
+		return 0;
+
+	ret = tty_init();
+	if (ret == 0)
+		return 0;
+
+	fprintf(stderr, PFX "error: both x11h_init and tty_init failed\n");
+	return -1;
+}
+
+int xenv_update(int *is_down)
+{
+	if (g_xstuff.display)
+		return x11h_update(is_down);
+
+	// TODO: read tty?
+	return -1;
+}
+
+void xenv_finish(void)
+{
+	// TODO: cleanup X?
+	tty_end();
+}
diff --git a/pandora/linux/xenv.h b/pandora/linux/xenv.h
new file mode 100644
index 0000000..948381e
--- /dev/null
+++ b/pandora/linux/xenv.h
@@ -0,0 +1,5 @@
+
+int  xenv_init(void);
+int  xenv_update(int *is_down);
+void xenv_finish(void);
+