From 7abf2b53a462612808d46d6d77a7f35261a0e5a3 Mon Sep 17 00:00:00 2001 From: Michael Sevakis Date: Fri, 9 Apr 2010 01:21:53 +0000 Subject: Gigabeat S/i.MX31: Sort files in the /target tree into things that are SoC-generic (into /imx31) and player-specific (into /gigabeat-s, based upon current appearances). Move i2s clock init into the appropriate file. Housekeeping only-- no functional changes. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25547 a1c6a512-1295-4272-9138-f99709370657 --- .../target/arm/imx31/gigabeat-s/lcd-gigabeat-s.c | 229 +++++++++++++++++++++ 1 file changed, 229 insertions(+) create mode 100644 firmware/target/arm/imx31/gigabeat-s/lcd-gigabeat-s.c (limited to 'firmware/target/arm/imx31/gigabeat-s/lcd-gigabeat-s.c') diff --git a/firmware/target/arm/imx31/gigabeat-s/lcd-gigabeat-s.c b/firmware/target/arm/imx31/gigabeat-s/lcd-gigabeat-s.c new file mode 100644 index 0000000000..71d8e4bef4 --- /dev/null +++ b/firmware/target/arm/imx31/gigabeat-s/lcd-gigabeat-s.c @@ -0,0 +1,229 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id$ + * + * Copyright (C) 2007 by Will Robertson + * + * 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. + * + ****************************************************************************/ +#include + +#include "config.h" +#include "cpu.h" +#include "string.h" +#include "lcd.h" +#include "kernel.h" +#include "lcd-target.h" +#include "backlight-target.h" + +#define MAIN_LCD_IDMAC_CHANNEL 14 +#define LCDADDR(x, y) (&lcd_framebuffer[(y)][(x)]) + +static bool lcd_on = true; +static bool lcd_powered = true; +static unsigned lcd_yuv_options = 0; + +/* Copies a rectangle from one framebuffer to another. Can be used in + single transfer mode with width = num pixels, and height = 1 which + allows a full-width rectangle to be copied more efficiently. */ +extern void lcd_copy_buffer_rect(fb_data *dst, const fb_data *src, + int width, int height); + +/* LCD init */ +void lcd_init_device(void) +{ + /* Move the framebuffer */ +#ifdef BOOTLOADER + /* Only do this once to avoid flicker */ + memset(FRAME, 0x00, FRAME_SIZE); +#endif + IPU_IDMAC_CHA_EN &= ~(1ul << MAIN_LCD_IDMAC_CHANNEL); + IPU_IMA_ADDR = ((0x1 << 16) | (MAIN_LCD_IDMAC_CHANNEL << 4)) + (1 << 3); + IPU_IMA_DATA = FRAME_PHYS_ADDR; + IPU_IDMAC_CHA_EN |= (1ul << MAIN_LCD_IDMAC_CHANNEL); +} + +/* Update a fraction of the display. */ +void lcd_update_rect(int x, int y, int width, int height) +{ + fb_data *dst, *src; + + if (!lcd_on) + return; + + if (x + width > LCD_WIDTH) + width = LCD_WIDTH - x; /* Clip right */ + if (x < 0) + width += x, x = 0; /* Clip left */ + if (width <= 0) + return; /* nothing left to do */ + + if (y + height > LCD_HEIGHT) + height = LCD_HEIGHT - y; /* Clip bottom */ + if (y < 0) + height += y, y = 0; /* Clip top */ + if (height <= 0) + return; /* nothing left to do */ + + /* TODO: It may be faster to swap the addresses of lcd_driver_framebuffer + * and lcd_framebuffer */ + dst = (fb_data *)FRAME + LCD_WIDTH*y + x; + src = &lcd_framebuffer[y][x]; + + /* Copy part of the Rockbox framebuffer to the second framebuffer */ + if (width < LCD_WIDTH) + { + /* Not full width - do line-by-line */ + lcd_copy_buffer_rect(dst, src, width, height); + } + else + { + /* Full width - copy as one line */ + lcd_copy_buffer_rect(dst, src, LCD_WIDTH*height, 1); + } +} + +void lcd_sleep(void) +{ + if (lcd_powered) + { + lcd_enable(false); + lcd_powered = false; + IPU_IDMAC_CHA_EN &= ~(1ul << MAIN_LCD_IDMAC_CHANNEL); + _backlight_lcd_sleep(); + } +} + +void lcd_enable(bool state) +{ + if (state == lcd_on) + return; + + if (state) + { + IPU_IDMAC_CHA_EN |= 1ul << MAIN_LCD_IDMAC_CHANNEL; + sleep(HZ/50); + lcd_powered = true; + lcd_on = true; + lcd_update(); + send_event(LCD_EVENT_ACTIVATION, NULL); + } + else + { + lcd_on = false; + } +} + +bool lcd_active(void) +{ + return lcd_on; +} + +/* Update the display. + This must be called after all other LCD functions that change the display. */ +void lcd_update(void) +{ + if (!lcd_on) + return; + + lcd_copy_buffer_rect((fb_data *)FRAME, &lcd_framebuffer[0][0], + LCD_WIDTH*LCD_HEIGHT, 1); +} + +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 */ +/* For the Gigabeat - show it rotated */ +/* 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; + + if (!lcd_on) + return; + + /* 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); + } +} + +void lcd_set_contrast(int val) { + (void) val; + // TODO: +} + +void lcd_set_invert_display(bool yesno) { + (void) yesno; + // TODO: +} + +void lcd_set_flip(bool yesno) { + (void) yesno; + // TODO: +} + -- cgit v1.2.3