06c03b51b2
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30532 a1c6a512-1295-4272-9138-f99709370657
593 lines
19 KiB
C
593 lines
19 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (c) 2011 by Amaury Pouly
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include <sys/types.h> /* off_t */
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#include <string.h>
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#include "cpu.h"
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#include "system.h"
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#include "backlight-target.h"
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#include "lcd.h"
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#include "lcdif-imx233.h"
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#include "clkctrl-imx233.h"
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#include "pinctrl-imx233.h"
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#define logf(...)
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/* Copies a rectangle from one framebuffer to another. Can be used in
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single transfer mode with width = num pixels, and height = 1 which
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allows a full-width rectangle to be copied more efficiently. */
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extern void lcd_copy_buffer_rect(fb_data *dst, const fb_data *src,
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int width, int height);
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static unsigned lcd_yuv_options = 0;
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#ifdef HAVE_LCD_ENABLE
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static bool lcd_on = true;
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#endif
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static enum lcd_kind_t
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{
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LCD_KIND_7783 = 0x7783,
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LCD_KIND_9325 = 0x9325,
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LCD_KIND_OTHER = 0,
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} lcd_kind = LCD_KIND_OTHER;
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static void setup_parameters(void)
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{
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imx233_lcdif_reset();
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imx233_lcdif_set_lcd_databus_width(HW_LCDIF_CTRL__LCD_DATABUS_WIDTH_18_BIT);
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imx233_lcdif_set_word_length(HW_LCDIF_CTRL__WORD_LENGTH_18_BIT);
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imx233_lcdif_set_timings(1, 2, 2, 2);
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}
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static void setup_lcd_pins(bool use_lcdif)
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{
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if(use_lcdif)
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{
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imx233_set_pin_function(1, 25, PINCTRL_FUNCTION_GPIO); /* lcd_vsync */
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imx233_set_pin_function(1, 21, PINCTRL_FUNCTION_MAIN); /* lcd_cs */
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imx233_set_pin_function(1, 22, PINCTRL_FUNCTION_GPIO); /* lcd_dotclk */
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imx233_set_pin_function(1, 23, PINCTRL_FUNCTION_GPIO); /* lcd_enable */
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imx233_set_pin_function(1, 24, PINCTRL_FUNCTION_GPIO); /* lcd_hsync */
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imx233_set_pin_function(1, 18, PINCTRL_FUNCTION_MAIN); /* lcd_reset */
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imx233_set_pin_function(1, 19, PINCTRL_FUNCTION_MAIN); /* lcd_rs */
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imx233_set_pin_function(1, 16, PINCTRL_FUNCTION_MAIN); /* lcd_d16 */
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imx233_set_pin_function(1, 17, PINCTRL_FUNCTION_MAIN); /* lcd_d17 */
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imx233_set_pin_function(1, 20, PINCTRL_FUNCTION_MAIN); /* lcd_wr */
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__REG_CLR(HW_PINCTRL_MUXSEL(2)) = 0xffffffff; /* lcd_d{0-15} */
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}
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else
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{
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__REG_SET(HW_PINCTRL_MUXSEL(2)) = 0xffffffff; /* lcd_d{0-15} */
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imx233_enable_gpio_output_mask(1, 0x3ffffff, false); /* lcd_{d{0-17},reset,rs,wr,cs,dotclk,enable,hsync,vsync} */
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imx233_set_pin_function(1, 16, PINCTRL_FUNCTION_GPIO); /* lcd_d16 */
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imx233_set_pin_function(1, 17, PINCTRL_FUNCTION_GPIO); /* lcd_d17 */
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imx233_set_pin_function(1, 19, PINCTRL_FUNCTION_GPIO); /* lcd_rs */
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imx233_set_pin_function(1, 20, PINCTRL_FUNCTION_GPIO); /* lcd_wr */
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imx233_set_pin_function(1, 21, PINCTRL_FUNCTION_GPIO); /* lcd_cs */
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imx233_set_pin_function(1, 22, PINCTRL_FUNCTION_GPIO); /* lcd_dotclk */
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imx233_set_pin_function(1, 23, PINCTRL_FUNCTION_GPIO); /* lcd_enable */
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imx233_set_pin_function(1, 24, PINCTRL_FUNCTION_GPIO); /* lcd_hsync */
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imx233_set_pin_function(1, 25, PINCTRL_FUNCTION_GPIO); /* lcd_vsync */
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}
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}
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static void setup_lcd_pins_i80(bool i80)
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{
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if(i80)
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{
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imx233_set_pin_drive_strength(1, 19, PINCTRL_DRIVE_12mA); /* lcd_rs */
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imx233_set_pin_drive_strength(1, 20, PINCTRL_DRIVE_12mA); /* lcd_wr */
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imx233_set_pin_drive_strength(1, 21, PINCTRL_DRIVE_12mA); /* lcd_cs */
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imx233_set_pin_drive_strength(1, 23, PINCTRL_DRIVE_12mA); /* lcd_enable */
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imx233_set_pin_function(1, 19, PINCTRL_FUNCTION_GPIO); /* lcd_rs */
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imx233_set_pin_function(1, 20, PINCTRL_FUNCTION_GPIO); /* lcd_wr */
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imx233_set_pin_function(1, 21, PINCTRL_FUNCTION_GPIO); /* lcd_cs */
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imx233_set_pin_function(1, 23, PINCTRL_FUNCTION_GPIO); /* lcd_enable */
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/* lcd_{rs,wr,cs,enable} */
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imx233_enable_gpio_output_mask(1, (1 << 19) | (1 << 20) | (1 << 21) | (1 << 23), true);
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imx233_set_gpio_output_mask(1, (1 << 19) | (1 << 20) | (1 << 21) | (1 << 23), true);
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imx233_enable_gpio_output_mask(1, 0x3ffff, false); /* lcd_d{0-17} */
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__REG_SET(HW_PINCTRL_MUXSEL(2)) = 0xffffffff; /* lcd_d{0-15} as GPIO */
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imx233_set_pin_function(1, 16, PINCTRL_FUNCTION_GPIO); /* lcd_d16 */
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imx233_set_pin_function(1, 17, PINCTRL_FUNCTION_GPIO); /* lcd_d17 */
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imx233_set_pin_function(1, 18, PINCTRL_FUNCTION_GPIO); /* lcd_reset */
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imx233_set_pin_function(1, 19, PINCTRL_FUNCTION_GPIO); /* lcd_rs */
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}
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else
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{
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imx233_set_gpio_output_mask(1, (1 << 19) | (1 << 20) | (1 << 21) | (1 << 23), true);
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imx233_set_pin_drive_strength(1, 19, PINCTRL_DRIVE_4mA); /* lcd_rs */
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imx233_set_pin_drive_strength(1, 20, PINCTRL_DRIVE_4mA); /* lcd_wr */
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imx233_set_pin_drive_strength(1, 21, PINCTRL_DRIVE_4mA); /* lcd_cs */
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imx233_set_pin_drive_strength(1, 23, PINCTRL_DRIVE_4mA); /* lcd_enable */
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imx233_set_pin_function(1, 19, PINCTRL_FUNCTION_MAIN); /* lcd_rs */
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imx233_set_pin_function(1, 20, PINCTRL_FUNCTION_MAIN); /* lcd_wr */
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imx233_set_pin_function(1, 21, PINCTRL_FUNCTION_MAIN); /* lcd_cs */
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imx233_enable_gpio_output_mask(1, 0x3ffff, false); /* lcd_d{0-17} */
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__REG_CLR(HW_PINCTRL_MUXSEL(2)) = 0xffffffff; /* lcd_d{0-15} as lcd_d{0-15} */
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imx233_set_pin_function(1, 16, PINCTRL_FUNCTION_MAIN); /* lcd_d16 */
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imx233_set_pin_function(1, 17, PINCTRL_FUNCTION_MAIN); /* lcd_d17 */
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imx233_set_pin_function(1, 18, PINCTRL_FUNCTION_MAIN); /* lcd_reset */
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imx233_set_pin_function(1, 19, PINCTRL_FUNCTION_MAIN); /* lcd_rs */
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}
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}
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static void common_lcd_enable(bool enable)
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{
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imx233_lcdif_enable(enable);
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setup_lcd_pins(enable); /* use GPIO pins when disable */
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}
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static void setup_lcdif(void)
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{
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setup_parameters();
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common_lcd_enable(true);
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imx233_lcdif_enable_bus_master(true);
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//imx233_lcdif_enable_irqs(HW_LCDIF__CUR_FRAME_DONE_IRQ);
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}
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static inline uint32_t encode_16_to_18(uint32_t a)
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{
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return ((a & 0xff) << 1) | (((a >> 8) & 0xff) << 10);
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}
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static inline uint32_t decode_18_to_16(uint32_t a)
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{
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return ((a >> 1) & 0xff) | ((a >> 2) & 0xff00);
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}
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static void setup_lcdif_clock(void)
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{
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/* the LCD seems to works at 24Mhz, so use the xtal clock with no divider */
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imx233_enable_clock(CLK_PIX, false);
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imx233_set_clock_divisor(CLK_PIX, 1);
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imx233_set_bypass_pll(CLK_PIX, true); /* use XTAL */
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imx233_enable_clock(CLK_PIX, true);
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}
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static uint32_t i80_read_register(uint32_t data_out)
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{
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/* lcd_enable is mapped to the RD pin of the controller */
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imx233_set_gpio_output(1, 21, true); /* lcd_cs */
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imx233_set_gpio_output(1, 19, true); /* lcd_rs */
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imx233_set_gpio_output(1, 23, true); /* lcd_enable */
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imx233_set_gpio_output(1, 20, true); /* lcd_wr */
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imx233_enable_gpio_output_mask(1, 0x3ffff, true); /* lcd_d{0-17} */
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mdelay(2);
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imx233_set_gpio_output(1, 19, false); /* lcd_rs */
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mdelay(1);
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imx233_set_gpio_output(1, 21, false); /* lcd_cs */
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mdelay(1);
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imx233_set_gpio_output(1, 20, false); /* lcd_wr */
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mdelay(1);
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imx233_set_gpio_output_mask(1, data_out & 0x3ffff, true); /* lcd_d{0-17} */
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mdelay(1);
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imx233_set_gpio_output(1, 20, true); /* lcd_wr */
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mdelay(3);
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imx233_enable_gpio_output_mask(1, 0x3ffff, false); /* lcd_d{0-17} */
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mdelay(2);
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imx233_set_gpio_output(1, 23, false); /* lcd_enable */
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mdelay(1);
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imx233_set_gpio_output(1, 19, true); /* lcd_rs */
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mdelay(1);
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imx233_set_gpio_output(1, 23, true); /* lcd_enable */
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mdelay(3);
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imx233_set_gpio_output(1, 23, false); /* lcd_enable */
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mdelay(2);
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uint32_t data_in = imx233_get_gpio_input_mask(1, 0x3ffff); /* lcd_d{0-17} */
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mdelay(1);
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imx233_set_gpio_output(1, 23, true); /* lcd_enable */
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mdelay(1);
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imx233_set_gpio_output(1, 21, true); /* lcd_cs */
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mdelay(1);
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return data_in;
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}
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static void lcd_write_reg(uint32_t reg, uint32_t data)
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{
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uint32_t old_reg = reg;
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/* get back to 18-bit word length */
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imx233_lcdif_set_word_length(HW_LCDIF_CTRL__WORD_LENGTH_18_BIT);
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reg = encode_16_to_18(reg);
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data = encode_16_to_18(data);
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imx233_lcdif_pio_send(false, 2, ®);
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if(old_reg != 0x22)
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imx233_lcdif_pio_send(true, 2, &data);
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}
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static uint32_t lcd_read_reg(uint32_t reg)
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{
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setup_lcd_pins_i80(true);
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uint32_t data_in = i80_read_register(encode_16_to_18(reg));
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setup_lcd_pins_i80(false);
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lcd_write_reg(0x22, 0);
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return decode_18_to_16(data_in);
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}
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#define REG_MDELAY 0xffffffff
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struct lcd_sequence_entry_t
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{
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uint32_t reg, data;
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};
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static void lcd_send_sequence(struct lcd_sequence_entry_t *seq, unsigned count)
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{
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for(;count-- > 0; seq++)
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{
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if(seq->reg == REG_MDELAY)
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mdelay(seq->data);
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else
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lcd_write_reg(seq->reg, seq->data);
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}
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}
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#define _begin_seq() static struct lcd_sequence_entry_t __seq[] = {
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#define _mdelay(a) {REG_MDELAY, a},
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#define _lcd_write_reg(a, b) {a, b},
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#define _end_seq() }; lcd_send_sequence(__seq, sizeof(__seq) / sizeof(__seq[0]));
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static void lcd_init_seq_7783(void)
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{
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__REG_SET(HW_LCDIF_CTRL1) = HW_LCDIF_CTRL1__RESET;
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mdelay(50);
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__REG_CLR(HW_LCDIF_CTRL1) = HW_LCDIF_CTRL1__RESET;
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mdelay(10);
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__REG_SET(HW_LCDIF_CTRL1) = HW_LCDIF_CTRL1__RESET;
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_begin_seq()
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_mdelay(200)
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_lcd_write_reg(1, 0x100)
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_lcd_write_reg(2, 0x700)
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_lcd_write_reg(3, 0x1030)
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_lcd_write_reg(7, 0x121)
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_lcd_write_reg(8, 0x302)
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_lcd_write_reg(9, 0x200)
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_lcd_write_reg(0xa, 0)
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_lcd_write_reg(0x10, 0x790)
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_lcd_write_reg(0x11, 5)
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_lcd_write_reg(0x12, 0)
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_lcd_write_reg(0x13, 0)
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_mdelay(100)
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_lcd_write_reg(0x10, 0x12b0)
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_mdelay(100)
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_lcd_write_reg(0x11, 7)
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_mdelay(100)
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_lcd_write_reg(0x12, 0x89)
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_lcd_write_reg(0x13, 0x1d00)
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_lcd_write_reg(0x29, 0x2f)
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_mdelay(50)
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_lcd_write_reg(0x30, 0)
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_lcd_write_reg(0x31, 0x505)
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_lcd_write_reg(0x32, 0x205)
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_lcd_write_reg(0x35, 0x206)
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_lcd_write_reg(0x36, 0x408)
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_lcd_write_reg(0x37, 0)
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_lcd_write_reg(0x38, 0x504)
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_lcd_write_reg(0x39, 0x206)
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_lcd_write_reg(0x3c, 0x206)
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_lcd_write_reg(0x3d, 0x408)
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_lcd_write_reg(0x50, 0) /* left X ? */
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_lcd_write_reg(0x51, 0xef) /* right X ? */
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_lcd_write_reg(0x52, 0) /* top Y ? */
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_lcd_write_reg(0x53, 0x13f) /* bottom Y ? */
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_lcd_write_reg(0x20, 0) /* left X ? */
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_lcd_write_reg(0x21, 0) /* top Y ? */
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_lcd_write_reg(0x60, 0xa700)
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_lcd_write_reg(0x61, 1)
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_lcd_write_reg(0x90, 0x33)
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_lcd_write_reg(0x2b, 0xa)
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_lcd_write_reg(9, 0)
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_lcd_write_reg(7, 0x133)
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_mdelay(50)
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_lcd_write_reg(0x22, 0)
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_end_seq()
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}
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static void lcd_init_seq_9325(void)
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{
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_begin_seq()
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_lcd_write_reg(0xe5, 0x78f0)
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_lcd_write_reg(0xe3, 0x3008)
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_lcd_write_reg(0xe7, 0x12)
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_lcd_write_reg(0xef, 0x1231)
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_lcd_write_reg(0, 1)
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_lcd_write_reg(1, 0x100)
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_lcd_write_reg(2, 0x700)
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_lcd_write_reg(3, 0x1030)
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_lcd_write_reg(4, 0)
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_lcd_write_reg(8, 0x207)
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_lcd_write_reg(9, 0)
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_lcd_write_reg(0xa, 0)
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_lcd_write_reg(0xc, 0)
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_lcd_write_reg(0xd, 0)
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_lcd_write_reg(0xf, 0)
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_lcd_write_reg(0x10, 0)
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_lcd_write_reg(0x11, 7)
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_lcd_write_reg(0x12, 0)
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_lcd_write_reg(0x13, 0)
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_mdelay(20)
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_lcd_write_reg(0x10, 0x1290)
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_lcd_write_reg(0x11, 7)
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_mdelay(50)
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_lcd_write_reg(0x12, 0x19)
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_mdelay(50)
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_lcd_write_reg(0x13, 0x1700)
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_lcd_write_reg(0x29, 0x14)
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_mdelay(50)
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_lcd_write_reg(0x20, 0)
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_lcd_write_reg(0x21, 0)
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_lcd_write_reg(0x30, 0x504)
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_lcd_write_reg(0x31, 7)
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_lcd_write_reg(0x32, 6)
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_lcd_write_reg(0x35, 0x106)
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_lcd_write_reg(0x36, 0x202)
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_lcd_write_reg(0x37, 0x504)
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_lcd_write_reg(0x38, 0x500)
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_lcd_write_reg(0x39, 0x706)
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_lcd_write_reg(0x3c, 0x204)
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_lcd_write_reg(0x3d, 0x202)
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_lcd_write_reg(0x50, 0)
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_lcd_write_reg(0x51, 0xef)
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_lcd_write_reg(0x52, 0)
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_lcd_write_reg(0x53, 0x13f)
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_lcd_write_reg(0x60, 0xa700)
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_lcd_write_reg(0x61, 1)
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_lcd_write_reg(0x6a, 1)
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_lcd_write_reg(0x2b, 0xd)
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_mdelay(50)
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_lcd_write_reg(0x90, 0x11)
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_lcd_write_reg(0x92, 0x600)
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_lcd_write_reg(0x93, 3)
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_lcd_write_reg(0x95, 0x110)
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_lcd_write_reg(0x97, 0)
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_lcd_write_reg(0x98, 0)
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_lcd_write_reg(7, 0x173)
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_lcd_write_reg(0x22, 0)
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_end_seq()
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}
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void lcd_init_device(void)
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{
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setup_lcdif();
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setup_lcdif_clock();
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for(int i = 0; i < 10; i++)
|
|
{
|
|
lcd_kind = lcd_read_reg(0);
|
|
if(lcd_kind == LCD_KIND_7783 || lcd_kind == LCD_KIND_9325)
|
|
break;
|
|
}
|
|
mdelay(5);
|
|
switch(lcd_kind)
|
|
{
|
|
case LCD_KIND_7783: lcd_init_seq_7783(); break;
|
|
case LCD_KIND_9325: lcd_init_seq_9325(); break;
|
|
default:
|
|
lcd_kind = LCD_KIND_7783;
|
|
lcd_init_seq_7783(); break;
|
|
}
|
|
}
|
|
|
|
#ifdef HAVE_LCD_ENABLE
|
|
static void lcd_enable_7783(bool enable)
|
|
{
|
|
if(!enable)
|
|
{
|
|
_begin_seq()
|
|
_lcd_write_reg(7, 0x131)
|
|
_mdelay(50)
|
|
_lcd_write_reg(7, 0x20)
|
|
_mdelay(50)
|
|
_lcd_write_reg(0x10, 0x82)
|
|
_mdelay(50)
|
|
_end_seq()
|
|
}
|
|
else
|
|
{
|
|
_begin_seq()
|
|
_lcd_write_reg(0x11, 5)
|
|
_lcd_write_reg(0x10, 0x12b0)
|
|
_mdelay(50)
|
|
_lcd_write_reg(7, 0x11)
|
|
_mdelay(50)
|
|
_lcd_write_reg(0x12, 0x89)
|
|
_mdelay(50)
|
|
_lcd_write_reg(0x13, 0x1d00)
|
|
_mdelay(50)
|
|
_lcd_write_reg(0x29, 0x2f)
|
|
_mdelay(50)
|
|
_lcd_write_reg(0x2b, 0xa)
|
|
_lcd_write_reg(7, 0x133)
|
|
_mdelay(50)
|
|
_lcd_write_reg(0x22, 0)
|
|
_end_seq()
|
|
}
|
|
}
|
|
|
|
static void lcd_enable_9325(bool enable)
|
|
{
|
|
if(!enable)
|
|
{
|
|
_begin_seq()
|
|
_lcd_write_reg(7, 0x131)
|
|
_mdelay(10)
|
|
_lcd_write_reg(7, 0x130)
|
|
_mdelay(10)
|
|
_lcd_write_reg(7, 0)
|
|
_lcd_write_reg(0x10, 0x80)
|
|
_lcd_write_reg(0x11, 0)
|
|
_lcd_write_reg(0x12, 0)
|
|
_lcd_write_reg(0x13, 0)
|
|
_mdelay(200)
|
|
_lcd_write_reg(0x10, 0x82)
|
|
_end_seq()
|
|
}
|
|
else
|
|
{
|
|
_begin_seq()
|
|
_lcd_write_reg(0x10, 0x80)
|
|
_lcd_write_reg(0x11, 0)
|
|
_lcd_write_reg(0x12, 0)
|
|
_lcd_write_reg(0x13, 0)
|
|
_lcd_write_reg(7, 1)
|
|
_mdelay(200)
|
|
_lcd_write_reg(0x10, 0x1290)
|
|
_lcd_write_reg(0x11, 7)
|
|
_mdelay(50)
|
|
_lcd_write_reg(0x12, 0x19)
|
|
_mdelay(50)
|
|
_lcd_write_reg(0x13, 0x1700)
|
|
_lcd_write_reg(0x29, 0x10)
|
|
_mdelay(50)
|
|
_lcd_write_reg(7, 0x133)
|
|
_lcd_write_reg(0x22, 0)
|
|
_end_seq()
|
|
}
|
|
}
|
|
|
|
void lcd_enable(bool enable)
|
|
{
|
|
if(lcd_on == enable)
|
|
return;
|
|
lcd_on = enable;
|
|
|
|
if(enable)
|
|
common_lcd_enable(true);
|
|
switch(lcd_kind)
|
|
{
|
|
case LCD_KIND_7783: lcd_enable_7783(enable); break;
|
|
case LCD_KIND_9325: lcd_enable_9325(enable); break;
|
|
default: lcd_enable_7783(enable); break;
|
|
}
|
|
if(!enable)
|
|
common_lcd_enable(false);
|
|
}
|
|
|
|
bool lcd_active(void)
|
|
{
|
|
return lcd_on;
|
|
}
|
|
#endif
|
|
|
|
void lcd_update(void)
|
|
{
|
|
#ifdef HAVE_LCD_ENABLE
|
|
if(!lcd_on)
|
|
return;
|
|
#endif
|
|
imx233_lcdif_wait_ready();
|
|
lcd_write_reg(0x50, 0);
|
|
lcd_write_reg(0x51, LCD_WIDTH - 1);
|
|
lcd_write_reg(0x52, 0);
|
|
lcd_write_reg(0x53, LCD_HEIGHT - 1);
|
|
lcd_write_reg(0x20, 0);
|
|
lcd_write_reg(0x21, 0);
|
|
lcd_write_reg(0x22, 0);
|
|
imx233_lcdif_wait_ready();
|
|
imx233_lcdif_set_word_length(HW_LCDIF_CTRL__WORD_LENGTH_16_BIT);
|
|
imx233_lcdif_set_byte_packing_format(0xf); /* two pixels per 32-bit word */
|
|
imx233_lcdif_set_data_format(false, false, false); /* RGB565, don't care, don't care */
|
|
lcd_copy_buffer_rect((fb_data *)FRAME, &lcd_framebuffer[0][0],
|
|
LCD_WIDTH * LCD_HEIGHT, 1);
|
|
imx233_lcdif_dma_send((void *)FRAME_PHYS_ADDR, LCD_WIDTH, LCD_HEIGHT);
|
|
}
|
|
|
|
void lcd_update_rect(int x, int y, int width, int height)
|
|
{
|
|
(void) x;
|
|
(void) y;
|
|
(void) width;
|
|
(void) height;
|
|
lcd_update();
|
|
}
|
|
|
|
void lcd_yuv_set_options(unsigned options)
|
|
{
|
|
lcd_yuv_options = options;
|
|
}
|
|
|
|
/* Line write helper function for lcd_yuv_blit. Write two lines of yuv420. */
|
|
extern void lcd_write_yuv420_lines(fb_data *dst,
|
|
unsigned char const * const src[3],
|
|
int width,
|
|
int stride);
|
|
extern void lcd_write_yuv420_lines_odither(fb_data *dst,
|
|
unsigned char const * const src[3],
|
|
int width,
|
|
int stride,
|
|
int x_screen, /* To align dither pattern */
|
|
int y_screen);
|
|
/* Performance function to blit a YUV bitmap directly to the LCD */
|
|
/* So the LCD_WIDTH is now the height */
|
|
void lcd_blit_yuv(unsigned char * const src[3],
|
|
int src_x, int src_y, int stride,
|
|
int x, int y, int width, int height)
|
|
{
|
|
/* Caches for chroma data so it only need be recaculated every other
|
|
line */
|
|
unsigned char const * yuv_src[3];
|
|
off_t z;
|
|
|
|
#ifdef HAVE_LCD_ENABLE
|
|
if (!lcd_on)
|
|
return;
|
|
#endif
|
|
|
|
/* Sorry, but width and height must be >= 2 or else */
|
|
width &= ~1;
|
|
height >>= 1;
|
|
|
|
y = LCD_WIDTH - 1 - y;
|
|
fb_data *dst = (fb_data*)FRAME + x * LCD_WIDTH + y;
|
|
|
|
z = stride*src_y;
|
|
yuv_src[0] = src[0] + z + src_x;
|
|
yuv_src[1] = src[1] + (z >> 2) + (src_x >> 1);
|
|
yuv_src[2] = src[2] + (yuv_src[1] - src[1]);
|
|
|
|
if (lcd_yuv_options & LCD_YUV_DITHER)
|
|
{
|
|
do
|
|
{
|
|
lcd_write_yuv420_lines_odither(dst, yuv_src, width, stride, y, x);
|
|
yuv_src[0] += stride << 1; /* Skip down two luma lines */
|
|
yuv_src[1] += stride >> 1; /* Skip down one chroma line */
|
|
yuv_src[2] += stride >> 1;
|
|
dst -= 2;
|
|
y -= 2;
|
|
}
|
|
while (--height > 0);
|
|
}
|
|
else
|
|
{
|
|
do
|
|
{
|
|
lcd_write_yuv420_lines(dst, yuv_src, width, stride);
|
|
yuv_src[0] += stride << 1; /* Skip down two luma lines */
|
|
yuv_src[1] += stride >> 1; /* Skip down one chroma line */
|
|
yuv_src[2] += stride >> 1;
|
|
dst -= 2;
|
|
}
|
|
while (--height > 0);
|
|
}
|
|
}
|