From 758bb3bc628705ff8e5c677b3b2d87720c726c13 Mon Sep 17 00:00:00 2001 From: Mark Arigo Date: Mon, 25 May 2009 21:10:45 +0000 Subject: 3 new ports: Samsung YH-820, YH-920, and YH-925. Mostly functional. Audio working on 820 & 925 (untested on the 920). No battery readings. No recording. No plugins. Keymap needs work. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21083 a1c6a512-1295-4272-9138-f99709370657 --- firmware/target/arm/samsung/yh920/lcd-yh920.c | 294 ++++++++++++++++++++++++++ 1 file changed, 294 insertions(+) create mode 100644 firmware/target/arm/samsung/yh920/lcd-yh920.c (limited to 'firmware/target/arm/samsung/yh920/lcd-yh920.c') diff --git a/firmware/target/arm/samsung/yh920/lcd-yh920.c b/firmware/target/arm/samsung/yh920/lcd-yh920.c new file mode 100644 index 0000000000..6c1528b630 --- /dev/null +++ b/firmware/target/arm/samsung/yh920/lcd-yh920.c @@ -0,0 +1,294 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id$ + * + * Copyright (C) 2004 by Linus Nielsen Feltzing + * + * 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 "config.h" + +#include "system.h" +#include "kernel.h" +#include "lcd.h" + +/*** definitions ***/ + +/* LCD command codes */ +#define LCD_CNTL_POWER_CONTROL 0x25 +#define LCD_CNTL_VOLTAGE_SELECT 0x2b +#define LCD_CNTL_LINE_INVERT_DRIVE 0x36 +#define LCD_CNTL_GRAY_SCALE_PATTERN 0x39 +#define LCD_CNTL_TEMP_GRADIENT_SELECT 0x4e +#define LCD_CNTL_OSC_FREQUENCY 0x5f +#define LCD_CNTL_ON_OFF 0xae +#define LCD_CNTL_OSC_ON_OFF 0xaa +#define LCD_CNTL_OFF_MODE 0xbe +#define LCD_CNTL_REVERSE 0xa6 +#define LCD_CNTL_ALL_LIGHTING 0xa4 +#define LCD_CNTL_COMMON_OUTPUT_STATUS 0xc4 +#define LCD_CNTL_COLUMN_ADDRESS_DIR 0xa0 +#define LCD_CNTL_NLINE_ON_OFF 0xe4 +#define LCD_CNTL_DISPLAY_MODE 0x66 +#define LCD_CNTL_DUTY_SET 0x6d +#define LCD_CNTL_ELECTRONIC_VOLUME 0x81 +#define LCD_CNTL_DATA_INPUT_DIR 0x84 +#define LCD_CNTL_DISPLAY_START_LINE 0x8a +#define LCD_CNTL_AREA_SCROLL 0x10 + +#define LCD_CNTL_PAGE 0xb1 +#define LCD_CNTL_COLUMN 0x13 +#define LCD_CNTL_DATA_WRITE 0x1d + +/* lcd commands */ +static void lcd_send_data(unsigned byte) +{ + while (LCD1_CONTROL & LCD1_BUSY_MASK); /* wait for LCD */ + LCD1_DATA = byte; +} + +static void lcd_send_cmd(unsigned byte) +{ + while (LCD1_CONTROL & LCD1_BUSY_MASK); /* wait for LCD */ + LCD1_CMD = byte; +} + +static void lcd_write_reg(unsigned cmd, unsigned data) +{ + lcd_send_cmd(cmd); + lcd_send_data(data); +} + +static void lcd_write_reg_ex(unsigned cmd, unsigned data0, unsigned data1) +{ + lcd_send_cmd(cmd); + lcd_send_data(data0); + lcd_send_data(data1); +} + +/*** hardware configuration ***/ +int lcd_default_contrast(void) +{ + return DEFAULT_CONTRAST_SETTING; +} + +void lcd_set_contrast(int val) +{ + /* Keep val in acceptable hw range */ + if (val < 0) + val = 0; + else if (val > 127) + val = 127; + + lcd_write_reg_ex(LCD_CNTL_ELECTRONIC_VOLUME, val, -1); +} + +void lcd_set_invert_display(bool yesno) +{ + lcd_send_cmd(LCD_CNTL_REVERSE | (yesno?1:0)); +} + +/* turn the display upside down (call lcd_update() afterwards) */ +void lcd_set_flip(bool yesno) +{ + if (yesno) + { + lcd_send_cmd(LCD_CNTL_COLUMN_ADDRESS_DIR | 1); + lcd_send_cmd(LCD_CNTL_COMMON_OUTPUT_STATUS | 0); + lcd_write_reg_ex(LCD_CNTL_DUTY_SET, 0x20, 0); + } + else + { + lcd_send_cmd(LCD_CNTL_COLUMN_ADDRESS_DIR | 0); + lcd_send_cmd(LCD_CNTL_COMMON_OUTPUT_STATUS | 1); + lcd_write_reg_ex(LCD_CNTL_DUTY_SET, 0x20, 1); + } +} + +void lcd_init_device(void) +{ +#if 0 + /* This is the init sequence from the yh820 OF bootloader */ + unsigned long tmp; + + DEV_INIT2 |= 0x400; + + DEV_INIT1 &= ~0x3000; + tmp = DEV_INIT1; + DEV_INIT1 = tmp; + DEV_INIT2 &= ~0x400; + + LCD1_CONTROL &= ~0x4; + udelay(15); + LCD1_CONTROL |= 0x4; + + LCD1_CONTROL = 0x680; + LCD1_CONTROL = 0x684; + + LCD1_CONTROL |= 0x1; + + lcd_send_cmd(LCD_CNTL_RESET); + lcd_send_cmd(LCD_CNTL_DISCHARGE_ON_OFF | 0); + lcd_send_cmd(LCD_CNTL_ON_OFF | 0); /* LCD OFF */ + lcd_send_cmd(LCD_CNTL_COLUMN_ADDRESS_DIR | 0); /* Normal */ + lcd_send_cmd(LCD_CNTL_COMMON_OUTPUT_STATUS | 0); /* Normal */ + lcd_send_cmd(LCD_CNTL_REVERSE | 0); /* Reverse OFF */ + lcd_send_cmd(LCD_CNTL_ALL_LIGHTING | 0); /* Normal */ + lcd_write_reg_ex(LCD_CNTL_DUTY_SET, 0x1f, 0x00); + lcd_send_cmd(LCD_CNTL_OFF_MODE | 1); /* OFF -> VCC on drivers */ + lcd_write_reg(LCD_CNTL_VOLTAGE_SELECT, 0x03); + lcd_write_reg(LCD_CNTL_ELECTRONIC_VOLUME, 0x40); + lcd_write_reg(LCD_CNTL_TEMP_GRADIENT_SELECT, 0x00); + lcd_write_reg(LCD_CNTL_LINE_INVERT_DRIVE, 0x1f); + lcd_send_cmd(LCD_CNTL_NLINE_ON_OFF | 1); /* N-line ON */ + lcd_write_reg(LCD_CNTL_OSC_FREQUENCY, 0x00); + lcd_send_cmd(LCD_CNTL_OSC_ON_OFF | 1); /* Oscillator ON */ + lcd_write_reg(LCD_CNTL_STEPUP_CK_FREQ, 0x03); + lcd_write_reg(LCD_CNTL_POWER_CONTROL, 0x1c); + lcd_write_reg(LCD_CNTL_POWER_CONTROL, 0x1e); + lcd_write_reg(LCD_CNTL_DISPLAY_START_LINE, 0x00); + lcd_send_cmd(LCD_CNTL_DATA_INPUT_DIR | 0); /* Column mode */ + lcd_send_cmd(LCD_CNTL_DISPLAY_MODE, 0); /* Greyscale mode */ + lcd_write_reg(LCD_CNTL_GRAY_SCALE_PATTERN, 0x52); + lcd_send_cmd(LCD_CNTL_PARTIAL_DISPLAY_ON_OFF | 0); + lcd_write_reg(LCD_CNTL_POWER_CONTROL, 0x1f); + lcd_send_cmd(LCD_CNTL_ON_OFF | 1); /* LCD ON */ +#endif +} + +/*** update functions ***/ + +/* Performance function that works with an external buffer + note that by and bheight are in 8-pixel units! */ +void lcd_blit_mono(const unsigned char *data, int x, int by, int width, + int bheight, int stride) +{ + (void)data; + (void)x; + (void)by; + (void)width; + (void)bheight; + (void)stride; + +#if 0 + /* This is from the h100 lcd code, perhaps we can adapt */ + const unsigned char *src, *src_end; + unsigned char *dst_u, *dst_l; + static unsigned char upper[LCD_WIDTH] IBSS_ATTR; + static unsigned char lower[LCD_WIDTH] IBSS_ATTR; + unsigned int byte; + + by *= 2; + + while (bheight--) + { + src = data; + src_end = data + width; + dst_u = upper; + dst_l = lower; + do + { + byte = *src++; + *dst_u++ = lcd_dibits[byte & 0x0F]; + byte >>= 4; + *dst_l++ = lcd_dibits[byte & 0x0F]; + } + while (src < src_end); + + lcd_write_reg_ex(LCD_CNTL_PAGE, by++, -1); + lcd_write_reg_ex(LCD_CNTL_COLUMN, x, -1); + lcd_send_cmd(LCD_CNTL_DATA_WRITE); + lcd_write_data(upper, width); + + lcd_write_reg_ex(LCD_CNTL_PAGE, by++, -1); + lcd_write_reg_ex(LCD_CNTL_COLUMN, x, -1); + lcd_send_cmd(LCD_CNTL_DATA_WRITE); + lcd_write_data(lower, width); + + data += stride; + } +#endif +} + +/* Helper function for lcd_grey_phase_blit(). */ +/* void lcd_grey_data(unsigned char *values, unsigned char *phases, int count); */ + +/* Performance function that works with an external buffer + note that by and bheight are in 4-pixel units! */ +void lcd_blit_grey_phase(unsigned char *values, unsigned char *phases, + int x, int by, int width, int bheight, int stride) +{ + (void)values; + (void)phases; + (void)x; + (void)by; + (void)width; + (void)bheight; + (void)stride; + +#if 0 + /* This is from the h100 lcd code, perhaps we can adapt */ + stride <<= 2; /* 4 pixels per block */ + while (bheight--) + { + lcd_write_reg_ex(LCD_CNTL_PAGE, by++, -1); + lcd_write_reg_ex(LCD_CNTL_COLUMN, x, -1); + lcd_send_cmd(LCD_CNTL_DATA_WRITE); + lcd_grey_data(values, phases, width); + values += stride; + phases += stride; + } +#endif +} + +/* Update a fraction of the display. */ +/* void lcd_update_rect(int, int, int, int) ICODE_ATTR; */ +void lcd_update_rect(int x0, int y, int width, int height) +{ + const fb_data *addr; + int ymax; + int x = x0; + + /* The Y coordinates have to work on even 8 pixel rows */ + ymax = (y + height-1) >> 2; + y >>= 2; + + if(x + width > LCD_WIDTH) + width = LCD_WIDTH - x; + if (width <= 0) + return; /* nothing left to do, 0 is harmful to lcd_write_data() */ + if(ymax >= LCD_FBHEIGHT) + ymax = LCD_FBHEIGHT-1; + + /* Copy specified rectange bitmap to hardware */ + for (; y <= ymax; y++) + { + lcd_write_reg(LCD_CNTL_PAGE, y); + lcd_write_reg(LCD_CNTL_COLUMN, x0); + + addr = &lcd_framebuffer[y][x0]; + + lcd_send_cmd(LCD_CNTL_DATA_WRITE); + for (x = x0; x < width; x++) + lcd_send_data(*addr++); + } +} + +/* 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); +} -- cgit v1.2.3