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+/***************************************************************************
+ * __________ __ ___.
+ * Open \______ \ ____ ____ | | _\_ |__ _______ ___
+ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+ * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+ * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+ * \/ \/ \/ \/ \/
+ *
+ * Copyright (C) 2016 Amaury Pouly
+ *
+ * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#ifndef __LCD_TARGET_H__
+#define __LCD_TARGET_H__
+
+extern fb_data *nwz_framebuffer; /* see lcd-nwz.c */
+#define LCD_FRAMEBUF_ADDR(col, row) (nwz_framebuffer + (row)*LCD_WIDTH + (col))
+
+#define NWZ_FB_LCD_DEV "/dev/fb/0"
+#define NWZ_FB_TV_DEV "/dev/fb/1"
+
+#define NWZ_FB_TYPE 'N'
+
+/* How backlight works:
+ *
+ * The brightness interface is a bit strange. There 6 levels: 0 throught 5.
+ * Level 0 means backlight off. When changing brightness, one sets level to the
+ * target brightness. The driver is gradually change the brightness to reach the
+ * target level. The step parameters control how many hardware steps will be done.
+ * For example, setting step to 1 will brutally change the level in one step.
+ * Setting step to 2 will change brightness in two steps: one intermediate and
+ * finally the target one. The more steps, the more gradual the transition. The
+ * period parameters controls the speed to changes between steps. Using this
+ * interface, one can achieve fade in/out at various speeds. */
+#define NWZ_FB_BL_MIN_LEVEL 0
+#define NWZ_FB_BL_MAX_LEVEL 5
+#define NWZ_FB_BL_MIN_STEP 1
+#define NWZ_FB_BL_MAX_STEP 100
+#define NWZ_FB_BL_MIN_PERIOD 10
+
+struct nwz_fb_brightness
+{
+ int level; /* brightness level: 0-5 */
+ int step; /* number of hardware steps to do when changing: 1-100 */
+ int period; /* period in ms between steps when changing: >=10 */
+};
+
+/* FB extensions:
+ *
+ * Sony added relatively complicated extensions to the framebuffer. They allow
+ * better control of framebuffer refresh, double-buffering and mixing with DSP
+ * (v4l2). Each outout (LCD and TV) has two buffers, called page 0 and 1 (or A
+ * and B). Each page has its own attributes (image info) that control
+ * transparency, rotation and updates. At any point in time, the LCD is drawing
+ * a page and one can select the next page to draw. Unless an UPDATE ioctl()
+ * is made to change it, the next page will be the same as the one being drawn.
+ *
+ * FIXME I don't know what the timer is, it seems irrelevant for the LCD but
+ * the OF uses it for TV, maybe this controls the refresh rate of the TV output?
+ * Also it only exists on early version (up to generation x60 roughly)
+ *
+ * On a side note, this information only applies to a subset of LCD types (the
+ * LCD type can be gathered from icx_sysinfo):
+ * - BB(0): AQUILA BB LCD
+ * - SW(1): SWAN or FIJI LCD
+ * - FC(2): FALCON OLED
+ * - GM(3): GUAM and ROTA LCD
+ * - FR(5): FURANO LCD ---> /!\ DOES NOT APPLY /!\
+ * - SD(6): SPICA_D LCD
+ * - AQ(7): AQUILA LCD
+ */
+
+/* Image infomation:
+ * SET_MODE will change the attributes of the requested page (ie .page)
+ * GET_MODE will return the attributes of the currently being displayed page
+ * UPDATE will do the same thing as SET_MODE but immediately refreshes the screen */
+struct nwz_fb_image_info
+{
+ int tc_enable; /* enable(1)/disable(0) transparent color */
+ int t_color; /* transparent color (16bpp RGB565) */
+ int alpha; /* alpha ratio (0 - 255) */
+ int page; /* 2D framebuffer page(0/1) */
+ int rot; /* LCD image rotation(0/1=180deg.) */
+ int update; /* only use with NWZ_FB_UPDATE, ignored for others */
+};
+
+/* update type */
+#define NWZ_FB_ONLY_2D_MODE 0
+#define NWZ_FB_DSP_AND_2D_MODE 1
+
+/* frame buffer page infomation: when NWZ_FB_WAIT_REFREHS is called, the driver
+ * will wait until the next refresh or the timeout, whichever comes first. It
+ * will then fill this structure with the page status. */
+struct nwz_fb_status
+{
+ int timeout; /* waiting time for any frame ready (in units of 10 ms) */
+ int page0; /* page 0 is out of display or waiting to be displayed */
+ int page1; /* page 0 is out of display or waiting to be displayed */
+};
+
+/* frame buffer page status */
+#define NWZ_FB_OUT_OF_DISPLAY 0
+#define NWZ_FB_WAITING_FOR_ON_DISPLAY 1
+
+/* frame buffer update timer infomation (use I/F fb <-> 2D API) */
+struct nwz_fb_update_timer
+{
+ int timerflag; /* auto update off(0) / auto update on(1) */
+ int timeout; /* timeout timer value (ms) */
+};
+
+/* timer flags */
+#define NWZ_FB_TIMER_ON 1
+#define NWZ_FB_TIMER_OFF 0
+
+/* default and minimum timeout value */
+#define NWZ_FB_DEFAULT_TIMEOUT 60
+#define NWZ_FB_MIN_TIMEOUT 33
+
+/* mmap offsets for page 1 (page 0 is always at address 0) */
+#define NWZ_FB_LCD_PAGE_OFFSET 0x2f000
+
+/* NOTE: I renamed those from Sony's header, because their original names were
+ * pure crap */
+#define NWZ_FB_WAIT_REFRESH _IOR(NWZ_FB_TYPE, 0x00, struct nwz_fb_status)
+#define NWZ_FB_UPDATE _IOW(NWZ_FB_TYPE, 0x01, struct nwz_fb_image_info)
+#define NWZ_FB_SET_MODE _IOW(NWZ_FB_TYPE, 0x02, struct nwz_fb_image_info)
+#define NWZ_FB_GET_MODE _IOR(NWZ_FB_TYPE, 0x03, struct nwz_fb_image_info)
+/* the timer only exits on MP200, it disappeared in EMXX and the ioctl fails */
+#define NWZ_FB_UPDATE_TIMER _IOR(NWZ_FB_TYPE, 0x04, struct nwz_fb_update_timer)
+/* unfortnately, Sony change the ioctl numbers of those between MP200 and EMXX */
+#define NWZ_FB_SET_BRIGHTNESS_MP200 _IOW(NWZ_FB_TYPE, 0x07, struct nwz_fb_brightness)
+#define NWZ_FB_GET_BRIGHTNESS_MP200 _IOR(NWZ_FB_TYPE, 0x08, struct nwz_fb_brightness)
+#define NWZ_FB_SET_BRIGHTNESS_EMXX _IOW(NWZ_FB_TYPE, 0x10, struct nwz_fb_brightness)
+#define NWZ_FB_GET_BRIGHTNESS_EMXX _IOR(NWZ_FB_TYPE, 0x11, struct nwz_fb_brightness)
+
+#endif /* __LCD_TARGET_H__ */
+