350 lines
9.9 KiB
C
350 lines
9.9 KiB
C
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/***************************************************************************
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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: lcd-S6B33B2.c 16981 2008-06-09 04:34:57Z jethead71 $
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*
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* Copyright (C) 2007 by Mark Arigo
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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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 "config.h"
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#include "cpu.h"
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#include "lcd.h"
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#include "kernel.h"
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#include "system.h"
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/* Display status */
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static unsigned lcd_yuv_options SHAREDBSS_ATTR = 0;
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/* LCD command set for Samsung S6B33B2 */
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#define R_NOP 0x00
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#define R_OSCILLATION_MODE 0x02
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#define R_DRIVER_OUTPUT_MODE 0x10
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#define R_DCDC_SET 0x20
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#define R_BIAS_SET 0x22
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#define R_DCDC_CLOCK_DIV 0x24
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#define R_DCDC_AMP_ONOFF 0x26
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#define R_TEMP_COMPENSATION 0x28
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#define R_CONTRAST_CONTROL1 0x2a
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#define R_CONTRAST_CONTROL2 0x2b
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#define R_STANDBY_OFF 0x2c
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#define R_STANDBY_ON 0x2d
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#define R_DDRAM_BURST_OFF 0x2e
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#define R_DDRAM_BURST_ON 0x2f
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#define R_ADDRESSING_MODE 0x30
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#define R_ROW_VECTOR_MODE 0x32
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#define R_N_LINE_INVERSION 0x34
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#define R_FRAME_FREQ_CONTROL 0x36
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#define R_RED_PALETTE 0x38
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#define R_GREEN_PALETTE 0x3a
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#define R_BLUE_PALETTE 0x3c
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#define R_ENTRY_MODE 0x40
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#define R_X_ADDR_AREA 0x42
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#define R_Y_ADDR_AREA 0x43
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#define R_RAM_SKIP_AREA 0x45
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#define R_DISPLAY_OFF 0x50
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#define R_DISPLAY_ON 0x51
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#define R_SPEC_DISPLAY_PATTERN 0x53
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#define R_PARTIAL_DISPLAY_MODE 0x55
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#define R_PARTIAL_START_LINE 0x56
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#define R_PARTIAL_END_LINE 0x57
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#define R_AREA_SCROLL_MODE 0x59
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#define R_SCROLL_START_LINE 0x5a
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#define R_DATA_FORMAT_SELECT 0x60
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/* TCC77x specific defines */
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#define LCD_BASE 0x50000000
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#define LCD_CMD *(volatile unsigned char*)(LCD_BASE)
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#define LCD_DATA *(volatile unsigned char*)(LCD_BASE+1)
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static void lcd_send_command(unsigned cmd)
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{
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LCD_CMD = cmd;
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asm volatile (
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"nop \n\t"
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"nop \n\t"
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"nop \n\t"
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);
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}
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static void lcd_send_data(unsigned data)
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{
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LCD_DATA = (data & 0xff00) >> 8;
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LCD_DATA = (data & 0x00ff);
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}
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/* End of TCC77x specific defines */
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/* LCD init */
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void lcd_init_device(void)
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{
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uint32_t bus_width;
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/* Telechips init the same as the original firmware */
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bus_width = ((MCFG >> 11) & 0x3) ^ 3;
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CSCFG1 = (bus_width << 28) |
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(3 << 26) | /* MTYPE = 3 */
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((LCD_BASE >> 28) << 22) | /* CSBASE = 0x5 */
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(1 << 20) | /* Unknown */
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(2 << 11) | /* Setup time = 2 cycles */
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(2 << 3) | /* Pulse width = 2+1 cycles */
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(2 << 0); /* Hold time = 2 cycle */
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GPIOE &= ~0x8;
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sleep(HZ/100); /* 10ms */
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GPIOE |= 0x08;
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sleep(HZ/100); /* 10ms */
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lcd_send_command(R_STANDBY_OFF);
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sleep(HZ/20); /* 50ms */
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lcd_send_command(R_OSCILLATION_MODE);
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lcd_send_command(0x01);
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sleep(HZ/100); /* 10ms */
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lcd_send_command(R_DCDC_AMP_ONOFF);
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lcd_send_command(0x01);
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sleep(HZ/100); /* 10ms */
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lcd_send_command(R_DCDC_AMP_ONOFF);
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lcd_send_command(0x09);
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sleep(HZ/100); /* 10ms */
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lcd_send_command(R_DCDC_AMP_ONOFF);
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lcd_send_command(0x0b);
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sleep(HZ/100); /* 10ms */
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lcd_send_command(R_DCDC_AMP_ONOFF);
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lcd_send_command(0x0f);
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sleep(HZ/100); /* 10ms */
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lcd_send_command(R_DCDC_SET);
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lcd_send_command(0x01);
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sleep(HZ/100); /* 10ms */
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sleep(HZ/10); /* 100ms */
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lcd_send_command(R_TEMP_COMPENSATION);
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lcd_send_command(0x01);
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sleep(HZ/100); /* 10ms */
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lcd_send_command(R_DRIVER_OUTPUT_MODE);
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lcd_send_command(0x03);
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lcd_send_command(R_ENTRY_MODE);
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lcd_send_command(0x81);
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lcd_send_command(R_N_LINE_INVERSION);
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lcd_send_command(0x04);
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lcd_send_command(0xfa);
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lcd_send_command(0x5f);
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lcd_set_contrast(0x28);
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lcd_send_command(R_SPEC_DISPLAY_PATTERN);
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lcd_send_command(0x0);
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sleep(HZ/100); /* 10ms */
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lcd_send_command(R_ADDRESSING_MODE);
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lcd_send_command(0x0);
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sleep(HZ/100); /* 10ms */
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lcd_send_command(R_PARTIAL_DISPLAY_MODE);
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lcd_send_command(0x0);
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sleep(HZ/100); /* 10ms */
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lcd_send_command(R_X_ADDR_AREA);
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lcd_send_command(0);
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lcd_send_command(0x80);
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lcd_send_command(R_Y_ADDR_AREA);
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lcd_send_command(0x0);
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lcd_send_command(0x80);
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lcd_send_command(R_DISPLAY_ON);
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lcd_send_command(R_SPEC_DISPLAY_PATTERN);
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lcd_send_command(0x0);
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/* Rockbox init */
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lcd_clear_display();
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lcd_update();
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}
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/*** hardware configuration ***/
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int lcd_default_contrast(void)
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{
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return 0x28;
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}
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void lcd_set_contrast(int val)
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{
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//val &= 0xFF;
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lcd_send_command(R_CONTRAST_CONTROL1);
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lcd_send_command(val);
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}
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void lcd_set_invert_display(bool yesno)
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{
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/* TODO: Implement lcd_set_invert_display() */
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(void)yesno;
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}
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/* turn the display upside down (call lcd_update() afterwards) */
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void lcd_set_flip(bool yesno)
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{
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lcd_send_command(R_DRIVER_OUTPUT_MODE);
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lcd_send_command(yesno ? 0x02 : 0x07);
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}
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/*** update functions ***/
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/*** update functions ***/
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void lcd_yuv_set_options(unsigned options)
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{
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lcd_yuv_options = options;
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}
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/* Line write helper function for lcd_yuv_blit. Write two lines of yuv420. */
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extern void lcd_write_yuv420_lines(unsigned char const * const src[3],
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int width,
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int stride);
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extern void lcd_write_yuv420_lines_odither(unsigned char const * const src[3],
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int width,
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int stride,
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int x_screen, /* To align dither pattern */
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int y_screen);
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/* Performance function to blit a YUV bitmap directly to the LCD */
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void lcd_blit_yuv(unsigned char * const src[3],
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int src_x, int src_y, int stride,
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int x, int y, int width, int height)
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{
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unsigned char const * yuv_src[3];
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off_t z;
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/* Sorry, but width and height must be >= 2 or else */
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width &= ~1;
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height >>= 1;
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y += 0x1a;
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z = stride*src_y;
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yuv_src[0] = src[0] + z + src_x;
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yuv_src[1] = src[1] + (z >> 2) + (src_x >> 1);
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yuv_src[2] = src[2] + (yuv_src[1] - src[1]);
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lcd_send_command(R_ENTRY_MODE);
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lcd_send_command(0x80);
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lcd_send_command(R_X_ADDR_AREA);
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lcd_send_command(x);
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lcd_send_command(x + width - 1);
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if (lcd_yuv_options & LCD_YUV_DITHER)
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{
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do
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{
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lcd_send_command(R_Y_ADDR_AREA);
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lcd_send_command(y);
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lcd_send_command(y + 1);
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/* NOP needed because on some c200s, the previous lcd_send_command
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is interpreted as a separate command instead of part of
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R_Y_ADDR_AREA. */
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lcd_send_command(R_NOP);
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lcd_write_yuv420_lines_odither(yuv_src, width, stride, x, y);
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yuv_src[0] += stride << 1; /* Skip down two luma lines */
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yuv_src[1] += stride >> 1; /* Skip down one chroma line */
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yuv_src[2] += stride >> 1;
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y += 2;
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}
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while (--height > 0);
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}
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else
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{
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do
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{
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lcd_send_command(R_Y_ADDR_AREA);
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lcd_send_command(y);
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lcd_send_command(y + 1);
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lcd_send_command(R_NOP);
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lcd_write_yuv420_lines(yuv_src, width, stride);
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yuv_src[0] += stride << 1; /* Skip down two luma lines */
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yuv_src[1] += stride >> 1; /* Skip down one chroma line */
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yuv_src[2] += stride >> 1;
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y += 2;
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}
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while (--height > 0);
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}
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}
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/* Update the display.
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This must be called after all other LCD functions that change the display. */
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void lcd_update(void)
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{
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lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
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}
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/* Update a fraction of the display. */
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void lcd_update_rect(int x, int y, int width, int height)
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{
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const fb_data *addr;
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if (x + width >= LCD_WIDTH)
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width = LCD_WIDTH - x;
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if (y + height >= LCD_HEIGHT)
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height = LCD_HEIGHT - y;
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if ((width <= 0) || (height <= 0))
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return; /* Nothing left to do. */
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addr = &lcd_framebuffer[y][x];
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if (width <= 1) {
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lcd_send_command(R_ENTRY_MODE); /* The X end address must be larger */
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lcd_send_command(0x80); /* that the X start address, so we */
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lcd_send_command(R_X_ADDR_AREA); /* switch to vertical mode for */
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lcd_send_command(x); /* single column updates and set */
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lcd_send_command(x + 1); /* the window width to 2 */
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} else {
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lcd_send_command(R_ENTRY_MODE);
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lcd_send_command(0x82);
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lcd_send_command(R_X_ADDR_AREA);
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lcd_send_command(x);
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lcd_send_command(x + width - 1);
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}
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lcd_send_command(R_Y_ADDR_AREA);
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lcd_send_command(y);
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lcd_send_command(y + height - 1);
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/* NOP needed because on some c200s, the previous lcd_send_command is
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interpreted as a separate command instead of part of R_Y_ADDR_AREA. */
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lcd_send_command(R_NOP);
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do {
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int w = width;
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do {
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lcd_send_data(*addr++);
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} while (--w > 0);
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addr += LCD_WIDTH - width;
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} while (--height > 0);
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}
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