/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * $Id:$ * * Copyright (C) 2007 by Mark Arigo * * All files in this archive are subject to the GNU General Public License. * See the file COPYING in the source tree root for full license agreement. * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * ****************************************************************************/ #include "config.h" #include "cpu.h" #include "lcd.h" #include "kernel.h" #include "system.h" #define LCD_BASE (*(volatile unsigned long *)(0x70003000)) #define LCD_CMD (*(volatile unsigned long *)(0x70003008)) #define LCD_DATA (*(volatile unsigned long *)(0x70003010)) #define LCD_BUSY 0x8000 /* LCD command set for Samsung S6B33B2 */ #define R_OSCILLATION_MODE 0x02 #define R_DRIVER_OUTPUT_MODE 0x10 #define R_DCDC_SET 0x20 #define R_BIAS_SET 0x22 #define R_DCDC_CLOCK_DIV 0x24 #define R_DCDC_AMP_ONOFF 0x26 #define R_TEMP_COMPENSATION 0x28 #define R_CONTRAST_CONTROL1 0x2a #define R_CONTRAST_CONTROL2 0x2b #define R_STANDBY_OFF 0x2c #define R_STANDBY_ON 0x2d #define R_DDRAM_BURST_OFF 0x2e #define R_DDRAM_BURST_ON 0x2f #define R_ADDRESSING_MODE 0x30 #define R_ROW_VECTOR_MODE 0x32 #define R_N_LINE_INVERSION 0x34 #define R_FRAME_FREQ_CONTROL 0x36 #define R_RED_PALETTE 0x38 #define R_GREEN_PALETTE 0x3a #define R_BLUE_PALETTE 0x3c #define R_ENTRY_MODE 0x40 #define R_X_ADDR_AREA 0x42 #define R_Y_ADDR_AREA 0x43 #define R_RAM_SKIP_AREA 0x45 #define R_DISPLAY_OFF 0x50 #define R_DISPLAY_ON 0x51 #define R_SPEC_DISPLAY_PATTERN 0x53 #define R_PARTIAL_DISPLAY_MODE 0x55 #define R_PARTIAL_START_LINE 0x56 #define R_PARTIAL_END_LINE 0x57 #define R_AREA_SCROLL_MODE 0x59 #define R_SCROLL_START_LINE 0x5a #define R_DATA_FORMAT_SELECT 0x60 /* wait for LCD */ static inline void lcd_wait_write(void) { while (LCD_BASE & LCD_BUSY); } /* send LCD data */ static void lcd_send_data(unsigned data) { lcd_wait_write(); LCD_DATA = data >> 8; lcd_wait_write(); LCD_DATA = data & 0xff; } /* send LCD command */ static void lcd_send_command(unsigned cmd) { lcd_wait_write(); LCD_CMD = cmd; } /* LCD init */ void lcd_init_device(void) { /* This is from the c200 of bootloader beginning at offset 0xbbf4 */ outl(inl(0x70000010) & ~0xfc000000, 0x70000010); outl(inl(0x70000010), 0x70000010); DEV_INIT &= ~0x400; udelay(10000); LCD_BASE &= ~0x4; udelay(15); LCD_BASE |= 0x4; udelay(10); LCD_BASE = 0x4687; udelay(10000); lcd_send_command(R_STANDBY_OFF); udelay(20000); lcd_send_command(R_OSCILLATION_MODE); lcd_send_command(0x01); udelay(20000); lcd_send_command(R_DCDC_AMP_ONOFF); lcd_send_command(0x01); udelay(20000); lcd_send_command(R_DCDC_AMP_ONOFF); lcd_send_command(0x09); udelay(20000); lcd_send_command(R_DCDC_AMP_ONOFF); lcd_send_command(0x0b); udelay(20000); lcd_send_command(R_DCDC_AMP_ONOFF); lcd_send_command(0x0f); udelay(20000); lcd_send_command(R_DRIVER_OUTPUT_MODE); lcd_send_command(0x07); lcd_send_command(R_DCDC_SET); lcd_send_command(0x03); lcd_send_command(R_DCDC_CLOCK_DIV); lcd_send_command(0x03); lcd_send_command(R_TEMP_COMPENSATION); lcd_send_command(0x01); lcd_send_command(R_CONTRAST_CONTROL1); lcd_send_command(0x55); lcd_send_command(R_ADDRESSING_MODE); lcd_send_command(0x10); lcd_send_command(R_ROW_VECTOR_MODE); lcd_send_command(0x0e); lcd_send_command(R_N_LINE_INVERSION); lcd_send_command(0x0d); lcd_send_command(R_FRAME_FREQ_CONTROL); lcd_send_command(0); lcd_send_command(R_ENTRY_MODE); lcd_send_command(0x82); lcd_send_command(R_Y_ADDR_AREA); /* vertical dimensions */ lcd_send_command(0x1a); /* y1 + 0x1a */ lcd_send_command(LCD_HEIGHT - 1 + 0x1a); /* y2 + 0x1a */ lcd_send_command(R_X_ADDR_AREA); /* horizontal dimensions */ lcd_send_command(0); /* x1 */ lcd_send_command(LCD_WIDTH - 1); /* x2 */ udelay(100000); lcd_send_command(R_DISPLAY_ON); } /*** hardware configuration ***/ int lcd_default_contrast(void) { return DEFAULT_CONTRAST_SETTING; } void lcd_set_contrast(int val) { /* TODO: Implement lcd_set_contrast() */ (void)val; } void lcd_set_invert_display(bool yesno) { /* TODO: Implement lcd_set_invert_display() */ (void)yesno; } /* turn the display upside down (call lcd_update() afterwards) */ void lcd_set_flip(bool yesno) { lcd_send_command(R_DRIVER_OUTPUT_MODE); lcd_send_command(yesno ? 0x02 : 0x07); } /*** update functions ***/ /* Performance function that works with an external buffer note that by and bheight are in 4-pixel units! */ void lcd_blit(const fb_data* data, int x, int by, int width, int bheight, int stride) { /* TODO: Implement lcd_blit() */ (void)data; (void)x; (void)by; (void)width; (void)bheight; (void)stride; } /* Performance function to blit a YUV bitmap directly to the LCD */ void lcd_yuv_blit(unsigned char * const src[3], int src_x, int src_y, int stride, int x, int y, int width, int height) { (void)src; (void)src_x; (void)src_y; (void)stride; (void)x; (void)y; (void)width; (void)height; } /* Update the display. This must be called after all other LCD functions that change the display. */ void lcd_update(void) { lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT); } /* Update a fraction of the display. */ void lcd_update_rect(int x0, int y0, int width, int height) { unsigned short *addr; int c, r; int x1 = (x0 + width) - 1; int y1 = (y0 + height) - 1; if ((x1 <= 0) || (y1 <= 0)) return; if(y1 >= LCD_HEIGHT) y1 = LCD_HEIGHT - 1; lcd_send_command(R_Y_ADDR_AREA); lcd_send_command(y0 + 0x1a); lcd_send_command(y1 + 0x1a); if(x1 >= LCD_WIDTH) x1 = LCD_WIDTH - 1; lcd_send_command(R_X_ADDR_AREA); lcd_send_command(x0); lcd_send_command(x1); addr = (unsigned short*)&lcd_framebuffer[y0][x0]; /* for each row */ for (r = 0; r < height; r++) { /* for each column */ for (c = 0; c < width; c++) { /* output 1 pixel */ lcd_send_data(*(addr++)); } addr += LCD_WIDTH - width; } }