d1e2f5240c
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15020 a1c6a512-1295-4272-9138-f99709370657
301 lines
7.7 KiB
C
301 lines
7.7 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) 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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/* LCD command set for Samsung S6B33B2 */
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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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/* wait for LCD */
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static inline void lcd_wait_write(void)
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{
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while (LCD1_BASE & LCD1_BUSY_MASK);
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}
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/* send LCD data */
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static void lcd_send_data(unsigned data)
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{
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lcd_wait_write();
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LCD1_DATA = data >> 8;
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lcd_wait_write();
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LCD1_DATA = data & 0xff;
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}
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/* send LCD command */
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static void lcd_send_command(unsigned cmd)
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{
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lcd_wait_write();
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LCD1_CMD = cmd;
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}
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/* LCD init */
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void lcd_init_device(void)
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{
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/* This is from the c200 of bootloader beginning at offset 0xbbf4 */
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outl(inl(0x70000010) & ~0xfc000000, 0x70000010);
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outl(inl(0x70000010), 0x70000010);
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DEV_INIT &= ~0x400;
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udelay(10000);
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LCD1_BASE &= ~0x4;
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udelay(15);
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LCD1_BASE |= 0x4;
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udelay(10);
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LCD1_BASE = 0x4687;
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udelay(10000);
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lcd_send_command(R_STANDBY_OFF);
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udelay(20000);
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lcd_send_command(R_OSCILLATION_MODE);
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lcd_send_command(0x01);
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udelay(20000);
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lcd_send_command(R_DCDC_AMP_ONOFF);
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lcd_send_command(0x01);
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udelay(20000);
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lcd_send_command(R_DCDC_AMP_ONOFF);
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lcd_send_command(0x09);
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udelay(20000);
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lcd_send_command(R_DCDC_AMP_ONOFF);
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lcd_send_command(0x0b);
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udelay(20000);
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lcd_send_command(R_DCDC_AMP_ONOFF);
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lcd_send_command(0x0f);
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udelay(20000);
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lcd_send_command(R_DRIVER_OUTPUT_MODE);
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lcd_send_command(0x07);
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lcd_send_command(R_DCDC_SET);
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lcd_send_command(0x03);
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lcd_send_command(R_DCDC_CLOCK_DIV);
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lcd_send_command(0x03);
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lcd_send_command(R_TEMP_COMPENSATION);
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lcd_send_command(0x01);
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lcd_send_command(R_CONTRAST_CONTROL1);
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lcd_send_command(0x55);
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lcd_send_command(R_ADDRESSING_MODE);
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lcd_send_command(0x10);
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lcd_send_command(R_ROW_VECTOR_MODE);
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lcd_send_command(0x0e);
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lcd_send_command(R_N_LINE_INVERSION);
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lcd_send_command(0x0d);
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lcd_send_command(R_FRAME_FREQ_CONTROL);
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lcd_send_command(0);
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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_Y_ADDR_AREA); /* vertical dimensions */
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lcd_send_command(0x1a); /* y1 + 0x1a */
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lcd_send_command(LCD_HEIGHT - 1 + 0x1a); /* y2 + 0x1a */
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lcd_send_command(R_X_ADDR_AREA); /* horizontal dimensions */
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lcd_send_command(0); /* x1 */
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lcd_send_command(LCD_WIDTH - 1); /* x2 */
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udelay(100000);
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lcd_send_command(R_DISPLAY_ON);
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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 DEFAULT_CONTRAST_SETTING;
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}
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void lcd_set_contrast(int val)
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{
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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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/* Performance function that works with an external buffer
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note that by and bheight are in 4-pixel units! */
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void lcd_blit(const fb_data* data, int x, int by, int width,
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int bheight, int stride)
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{
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/* TODO: Implement lcd_blit() */
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(void)data;
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(void)x;
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(void)by;
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(void)width;
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(void)bheight;
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(void)stride;
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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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/* Performance function to blit a YUV bitmap directly to the LCD */
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void lcd_yuv_blit(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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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_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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/* 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 x0, int y0, int width, int height)
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{
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unsigned short *addr;
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int c, r;
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int x1 = (x0 + width) - 1;
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int y1 = (y0 + height) - 1;
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if ((x1 <= 0) || (y1 <= 0))
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return;
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lcd_send_command(R_ENTRY_MODE);
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lcd_send_command(0x82);
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if(y1 >= LCD_HEIGHT)
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y1 = LCD_HEIGHT - 1;
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lcd_send_command(R_Y_ADDR_AREA);
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lcd_send_command(y0 + 0x1a);
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lcd_send_command(y1 + 0x1a);
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if(x1 >= LCD_WIDTH)
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x1 = LCD_WIDTH - 1;
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lcd_send_command(R_X_ADDR_AREA);
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lcd_send_command(x0);
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lcd_send_command(x1);
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addr = (unsigned short*)&lcd_framebuffer[y0][x0];
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/* for each row */
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for (r = 0; r < height; r++) {
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/* for each column */
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for (c = 0; c < width; c++) {
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/* output 1 pixel */
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lcd_send_data(*(addr++));
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}
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addr += LCD_WIDTH - width;
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}
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}
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