/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * * Copyright (C) 2011 by Tomasz Moń * * 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 "kernel.h" #include "system.h" #include "system-target.h" #include "lcd.h" #include "lcd-target.h" #include "avr-sansaconnect.h" #include "backlight-target.h" /* See lcd-memframe.c */ extern void lcd_set_active(bool active); static bool lcd_powered; void lcd_sleep(void) { if (lcd_powered) { lcd_set_active(false); avr_hid_lcm_power_off(); mdelay(100); /* Disable OSD window */ bitclr16(&IO_OSD_OSDWINMD0, 0x01); /* disable video encoder */ bitclr16(&IO_VID_ENC_VMOD, VENC_VMOD_VENC); mdelay(66); /* disable video encoder and OSD clocks */ bitclr16(&IO_CLK_MOD1, CLK_MOD1_VENC | CLK_MOD1_OSD); lcd_powered = false; } } void lcd_awake(void) { if (!lcd_powered) { /* Enable Video Encoder and OSD clocks */ bitset16(&IO_CLK_MOD1, CLK_MOD1_VENC | CLK_MOD1_OSD); /* Enable OSD window */ bitset16(&IO_OSD_OSDWINMD0, 0x01); /* Enable video encoder */ bitset16(&IO_VID_ENC_VMOD, VENC_VMOD_VENC); avr_hid_lcm_power_on(); mdelay(66); lcd_set_active(true); avr_hid_lcm_wake(); lcd_powered = true; send_event(LCD_EVENT_ACTIVATION, NULL); } } void lcd_shutdown(void) { backlight_hw_off(); lcd_sleep(); } void lcd_enable(bool enable) { if (lcd_active() == enable) return; lcd_set_active(enable); if (enable) { /* Enable Video Encoder and OSD clocks */ bitset16(&IO_CLK_MOD1, CLK_MOD1_VENC | CLK_MOD1_OSD); /* Enable OSD window */ bitset16(&IO_OSD_OSDWINMD0, 0x01); /* Enable video encoder */ bitset16(&IO_VID_ENC_VMOD, VENC_VMOD_VENC); avr_hid_lcm_wake(); mdelay(30); send_event(LCD_EVENT_ACTIVATION, NULL); } else { mdelay(30); avr_hid_lcm_sleep(); mdelay(10); /* Disable OSD window */ bitclr16(&IO_OSD_OSDWINMD0, 0x01); /* disable video encoder */ bitclr16(&IO_VID_ENC_VMOD, VENC_VMOD_VENC); mdelay(66); /* disable video encoder and OSD clocks */ bitclr16(&IO_CLK_MOD1, CLK_MOD1_VENC | CLK_MOD1_OSD); } } void lcd_init_device(void) { unsigned int addr; /* Disable Video Encoder clock */ bitclr16(&IO_CLK_MOD1, CLK_MOD1_VENC); /* configure GIO39, GIO34 as outputs */ IO_GIO_DIR2 &= ~((1 << 7) /* GIO39 */ | (1 << 2) /* GIO34 */); IO_GIO_FSEL3 = (IO_GIO_FSEL3 & ~(0x300F)) | (0x1000) /* GIO39 - FIELD_VENC */ | (0x4); /* GIO34 - PWM1 (brightness control) */ /* OSD Clock = VENC Clock /2, CCD clock PCLK, VENC Clock from PLLA */ IO_CLK_SEL1 = 0x3; /* Set VENC Clock Division to 11 (PLLA / 11 = 297 MHz / 11 = 27 MHz) OF bootloader sets division to 8, vmlinux sets it to 11 */ IO_CLK_DIV3 = (IO_CLK_DIV3 & ~(0x1F00)) | 0xB00; /* Enable OSD clock */ bitset16(&IO_CLK_MOD1, CLK_MOD1_OSD); /* magic values based on OF bootloader initialization */ /* Set DAC to powerdown mode (bit 2 to 1 in VMOD) */ IO_VID_ENC_VMOD = 0x2014; /* OF sets 0x2010 */ IO_VID_ENC_VDPRO = 0x80; IO_VID_ENC_HSPLS = 0x4; IO_VID_ENC_HINT = 0x4B0; IO_VID_ENC_HSTART = 0x88; IO_VID_ENC_HVALID = 0x3C0; IO_VID_ENC_HSDLY = 0; IO_VID_ENC_VSPLS = 0x2; IO_VID_ENC_VINT = 0x152; IO_VID_ENC_VSTART = 0x6; IO_VID_ENC_VVALID = 0x140; IO_VID_ENC_VSDLY = 0; IO_VID_ENC_DCLKCTL = 0x3; IO_VID_ENC_DCLKPTN0 = 0xC; IO_VID_ENC_VDCTL = 0x6000; IO_VID_ENC_SYNCTL = 0x2; IO_VID_ENC_LCDOUT = 0x101; IO_VID_ENC_VMOD = 0x2015; /* OF sets 0x2011 */ /* Copy Rockbox frame buffer to the second framebuffer */ lcd_set_active(true); lcd_update(); /* set framebuffer address - OF sets RAM start address to 0x1000000 */ addr = ((int)FRAME-CONFIG_SDRAM_START)/32; IO_OSD_OSDWINADH = addr >> 16; IO_OSD_OSDWIN0ADL = addr & 0xFFFF; IO_OSD_BASEPX = 0x44; IO_OSD_BASEPY = 0x6; IO_OSD_OSDWIN0XP = 0; IO_OSD_OSDWIN0YP = 0; IO_OSD_OSDWIN0XL = LCD_WIDTH*2; /* OF bootloader sets 480 */ IO_OSD_OSDWIN0YL = LCD_HEIGHT; /* OF bootloader sets 320 */ IO_OSD_OSDWIN0OFST = 0xF; IO_OSD_OSDWINMD0 = 0x25FB;/* OF bootloader sets 25C3, vmlinux changes this to 0x25FB */ IO_OSD_VIDWINMD = 0; /* disable video windows (OF sets 0x03) */ IO_OSD_OSDWINMD1 = 0; /* disable OSD window 1 */ /* Enable Video Encoder and OSD clocks */ bitset16(&IO_CLK_MOD1, CLK_MOD1_VENC | CLK_MOD1_OSD); /* Enable Video Encoder - RGB666, custom timing */ IO_VID_ENC_VMOD = 0x2015; lcd_powered = true; avr_hid_lcm_wake(); } #ifdef LCD_USE_DMA static void dma_lcd_copy_buffer_rect(int x, int y, int width, int height) { char *dst, *src; /* Image buffer A is 4KW, every pixel is one Word */ /* lines is maximum number of lines we can transfer in single run */ int lines = 4096/width; if (lines > height) lines = height; /* Set source and destination addresses */ dst = (char*)(FRAME + LCD_WIDTH*y + x); src = (char*)(FBADDR(x,y)); /* Flush cache to memory */ commit_dcache(); /* Addresses are relative to start of SDRAM */ src -= CONFIG_SDRAM_START; dst -= CONFIG_SDRAM_START; /* Enable Image Buffer clock */ bitset16(&IO_CLK_MOD1, CLK_MOD1_IMGBUF); /* Use Image Buffer A for DMA */ COP_BUF_MUX0 = (COP_BUF_MUX0 & 0xFFF0) | 0x0003; /* Setup buffer offsets and transfer width/height */ COP_BUF_LOFST = width; COP_DMA_XNUM = width; COP_DMA_YNUM = lines; /* DMA: No byte SWAP, no transformation, data bus shift down 0 bit */ COP_IMG_MODE &= 0xC0; /* Set the start address of buffer */ COP_BUF_ADDR = 0x0000; /* Setup SDRAM stride */ COP_SDEM_LOFST = LCD_WIDTH; do { int addr; addr = (int)src; addr >>= 1; /* Addresses are in 16-bit words */ /* Setup the registers to initiate the read from SDRAM */ COP_SDEM_ADDRH = addr >> 16; COP_SDEM_ADDRL = addr & 0xFFFF; /* Set direction and start */ COP_DMA_CTRL = 0x0001; COP_DMA_CTRL |= 0x0002; /* Wait for read to finish */ while (COP_DMA_CTRL & 0x02) {}; addr = (int)dst; addr >>= 1; COP_SDEM_ADDRH = addr >> 16; COP_SDEM_ADDRL = addr & 0xFFFF; /* Set direction and start transfer */ COP_DMA_CTRL = 0x0000; COP_DMA_CTRL |= 0x0002; /* Wait for the transfer to complete */ while (COP_DMA_CTRL & 0x02) {}; /* Decrease height, update pointers */ src += (LCD_WIDTH << 1)*lines; dst += (LCD_WIDTH << 1)*lines; height -= lines; if (height < lines) { lines = height; COP_DMA_YNUM = height; } } while (height > 0); /* Disable Image Buffer clock */ bitclr16(&IO_CLK_MOD1, CLK_MOD1_IMGBUF); } /* Update a fraction of the display. */ void lcd_update_rect(int x, int y, int width, int height) __attribute__ ((section(".icode"))); void lcd_update_rect(int x, int y, int width, int height) { if (!lcd_active()) return; if ((width | height) < 0) return; /* Nothing left to do */ if (x + width > LCD_WIDTH) width = LCD_WIDTH - x; /* Clip right */ if (x < 0) width += x, x = 0; /* Clip left */ if (y + height > LCD_HEIGHT) height = LCD_HEIGHT - y; /* Clip bottom */ if (y < 0) height += y, y = 0; /* Clip top */ dma_lcd_copy_buffer_rect(x, y, width, height); } /* Update the display. This must be called after all other LCD functions that change the display. */ void lcd_update(void) __attribute__ ((section(".icode"))); void lcd_update(void) { if (!lcd_active()) return; lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT); } #endif 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: }