From 3520d8e90e7f6e3ffc88f8d1ff47fa3cc0efe960 Mon Sep 17 00:00:00 2001 From: Rafaël Carré Date: Wed, 17 Jun 2009 19:55:27 +0000 Subject: Sansa c200v2 : lcd & backlight support, using the c200v1 lcd driver The LCD driver is unified and lcd_send_command now takes 2 arguments : the command and its argument. If there is no argument, it's set to 0 and a NOP command is issued If there is more than one argument (set X/Y address), the 2nd argument is sent as a 2nd command, and a NOP command is issued after it. Benefit : c200v2 transfers the command and the argument in one 16 bits transfer Performance should not be affected since commands without argument are only used in lcd_init() and lcd_enable() lcd_send_data() now transfers whole lines (or columns) instead of single pixels yuv is disabled for c200v2 for now Some buttons can be read, including left button (bit 6 of DBOP_DIN), but for some reason they have no effect in rockbox: to be investigated git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21321 a1c6a512-1295-4272-9138-f99709370657 --- firmware/target/arm/lcd-c200_c200v2.c | 455 ++++++++++++++++++++++++++++++++++ 1 file changed, 455 insertions(+) create mode 100644 firmware/target/arm/lcd-c200_c200v2.c (limited to 'firmware/target/arm/lcd-c200_c200v2.c') diff --git a/firmware/target/arm/lcd-c200_c200v2.c b/firmware/target/arm/lcd-c200_c200v2.c new file mode 100644 index 0000000000..b3e8f0eb4f --- /dev/null +++ b/firmware/target/arm/lcd-c200_c200v2.c @@ -0,0 +1,455 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id$ + * + * Copyright (C) 2007 by Mark Arigo + * + * 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 "cpu.h" +#include "lcd.h" +#include "kernel.h" +#include "system.h" + +#ifdef SANSA_C200V2 +/* button driver needs to know if a lcd operation is in progress */ +static bool lcd_busy = false; +#endif + +/* Display status */ +static unsigned lcd_yuv_options SHAREDBSS_ATTR = 0; +static bool is_lcd_enabled = true; + +/* LCD command set for Samsung S6B33B2 */ + +#define R_NOP 0x00 +#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 + +#if defined(SANSA_C200) +/* wait for LCD */ +static inline void lcd_wait_write(void) +{ + while (LCD1_CONTROL & LCD1_BUSY_MASK); +} + +/* send LCD data */ +static void lcd_send_data(const fb_data *data, int width) +{ + while(width--) + { + lcd_wait_write(); + LCD1_DATA = *data >> 8; + lcd_wait_write(); + LCD1_DATA = *data++ & 0xff; + } +} + +/* send LCD command */ +static void lcd_send_command(unsigned char cmd, unsigned char arg) +{ + lcd_wait_write(); + LCD1_CMD = cmd; + /* if the argument is 0, we send a NOP (= 0) command */ + lcd_wait_write(); + LCD1_CMD = arg; +} + +static inline void c200v1_lcd_init(void) +{ + /* This is from the c200 of bootloader beginning at offset 0xbbf4 */ + outl(inl(0x70000010) & ~0xfc000000, 0x70000010); + outl(inl(0x70000010), 0x70000010); + + DEV_INIT2 &= ~0x400; + udelay(10000); + + LCD1_CONTROL &= ~0x4; + udelay(15); + + LCD1_CONTROL |= 0x4; + udelay(10); + + LCD1_CONTROL = 0x0084; /* bits (9,10) = 00 -> fastest setting */ + udelay(10000); +} + +#define lcd_delay(delay) udelay((delay) * 1000) + +#elif defined(SANSA_C200V2) + +static inline void lcd_delay(int delay) +{ //TUNEME : delay is in milliseconds + delay <<= 14; + while(delay--) ; +} + +/* send LCD data */ +static void lcd_send_data(const fb_data *data, int width) +{ + while(width--) + { + DBOP_DOUT = *data << 8 | *data >> 8; + data++; + while ((DBOP_STAT & (1<<10)) == 0); + } +} + +/* send LCD command */ +static void lcd_send_command(unsigned char cmd, unsigned char val) +{ + DBOP_TIMPOL_23 = 0xa167006e; + + DBOP_DOUT = cmd | val << 8; + + while ((DBOP_STAT & (1<<10)) == 0); + + DBOP_TIMPOL_23 = 0xa167e06f; +} + +static inline void as3525_dbop_init(void) +{ + CGU_DBOP = (1<<3) | AS3525_DBOP_DIV; + + DBOP_TIMPOL_01 = 0xe167e167; + DBOP_TIMPOL_23 = 0xe167006e; + DBOP_CTRL = 0x40008; + + GPIOB_AFSEL = 0xc; + GPIOC_AFSEL = 0xff; + + DBOP_TIMPOL_23 = 0x6006e; + DBOP_CTRL = 0x52008; + DBOP_TIMPOL_01 = 0x6e167; + DBOP_TIMPOL_23 = 0xa167e06f; + + lcd_delay(20); +} + +/* we need to set the DBOP_DOUT pins high, for correct dbop reads */ +bool lcd_button_support(void) +{ + const fb_data data = 0xffff; + + if (lcd_busy) /* we can't use dbop for reading if we are in the */ + return false; /* middle of a write operation */ + + /* use out of screen coordinates */ + lcd_send_command(R_X_ADDR_AREA, 0); + lcd_send_command(1, 0); + lcd_send_command(R_Y_ADDR_AREA, 0); + lcd_send_command(1, 0); + + lcd_send_data(&data, 1); + + return true; +} +#endif + +/* LCD init */ +void lcd_init_device(void) +{ +#if defined(SANSA_C200) + c200v1_lcd_init(); +#elif defined(SANSA_C200V2) + as3525_dbop_init(); +#endif + + lcd_send_command(R_STANDBY_OFF, 0); + lcd_delay(20); + + lcd_send_command(R_OSCILLATION_MODE, 0x01); + lcd_delay(20); + + lcd_send_command(R_DCDC_AMP_ONOFF, 0x01); + lcd_delay(20); + + lcd_send_command(R_DCDC_AMP_ONOFF, 0x09); + lcd_delay(20); + + lcd_send_command(R_DCDC_AMP_ONOFF, 0x0b); + lcd_delay(20); + + lcd_send_command(R_DCDC_AMP_ONOFF, 0x0f); + lcd_delay(20); + + lcd_send_command(R_DRIVER_OUTPUT_MODE, 0x07); + + lcd_send_command(R_DCDC_SET, 0x03); + + lcd_send_command(R_DCDC_CLOCK_DIV, 0x03); + + lcd_send_command(R_TEMP_COMPENSATION, 0x01); + + lcd_send_command(R_CONTRAST_CONTROL1, 0x55); + + lcd_send_command(R_ADDRESSING_MODE, 0x10); + + lcd_send_command(R_ROW_VECTOR_MODE, 0x0e); + + lcd_send_command(R_N_LINE_INVERSION, 0x0d); + + lcd_send_command(R_FRAME_FREQ_CONTROL, 0); + + lcd_send_command(R_ENTRY_MODE, 0x82); + + /* vertical dimensions */ + lcd_send_command(R_Y_ADDR_AREA, 0x1a); /* y1 + 0x1a */ + lcd_send_command(LCD_HEIGHT - 1 + 0x1a, 0); /* y2 + 0x1a */ + + /* horizontal dimensions */ + lcd_send_command(R_X_ADDR_AREA, 0); /* x1 */ + lcd_send_command(LCD_WIDTH - 1, 0); /* x2 */ + + lcd_delay(100); + + lcd_send_command(R_DISPLAY_ON, 0); +} + +/*** hardware configuration ***/ +int lcd_default_contrast(void) +{ + return DEFAULT_CONTRAST_SETTING; +} + +void lcd_set_contrast(int val) +{ +#ifdef SANSA_C200V2 + lcd_busy = true; +#endif + lcd_send_command(R_CONTRAST_CONTROL1, val); +#ifdef SANSA_C200V2 + lcd_busy = false; +#endif +} + +void lcd_set_invert_display(bool yesno) +{ + /* TODO: Implement lcd_set_invert_display() */ + (void)yesno; +} + +#if defined(HAVE_LCD_ENABLE) +void lcd_enable(bool yesno) +{ + if (yesno == is_lcd_enabled) + return; + +#ifdef SANSA_C200V2 + lcd_busy = true; +#endif + if ((is_lcd_enabled = yesno)) + { + lcd_send_command(R_STANDBY_OFF, 0); + lcd_send_command(R_DISPLAY_ON, 0); + lcd_activation_call_hook(); + } + else + { + lcd_send_command(R_STANDBY_ON, 0); + } +#ifdef SANSA_C200V2 + lcd_busy = false; +#endif +} +#endif + +#if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP) +bool lcd_active(void) +{ + return is_lcd_enabled; +} +#endif + + +/* turn the display upside down (call lcd_update() afterwards) */ +void lcd_set_flip(bool yesno) +{ +#ifdef SANSA_C200V2 + lcd_busy = true; +#endif + lcd_send_command(R_DRIVER_OUTPUT_MODE, yesno ? 0x02 : 0x07); +#ifdef SANSA_C200V2 + lcd_busy = false; +#endif +} + +/*** update functions ***/ + +void lcd_yuv_set_options(unsigned options) +{ + lcd_yuv_options = options; +} + +/* Line write helper function for lcd_yuv_blit. Write two lines of yuv420. */ +extern void lcd_write_yuv420_lines(unsigned char const * const src[3], + int width, + int stride); +extern void lcd_write_yuv420_lines_odither(unsigned char const * const src[3], + int width, + int stride, + int x_screen, /* To align dither pattern */ + int y_screen); +/* Performance function to blit a YUV bitmap directly to the LCD */ +void lcd_blit_yuv(unsigned char * const src[3], + int src_x, int src_y, int stride, + int x, int y, int width, int height) +{ + unsigned char const * yuv_src[3]; + off_t z; + +#ifdef SANSA_C200V2 + lcd_busy = true; +#endif + + /* Sorry, but width and height must be >= 2 or else */ + width &= ~1; + height >>= 1; + + y += 0x1a; + + z = stride*src_y; + yuv_src[0] = src[0] + z + src_x; + yuv_src[1] = src[1] + (z >> 2) + (src_x >> 1); + yuv_src[2] = src[2] + (yuv_src[1] - src[1]); + + lcd_send_command(R_ENTRY_MODE, 0x80); + + lcd_send_command(R_X_ADDR_AREA, x); + lcd_send_command(x + width - 1, 0); + + if (lcd_yuv_options & LCD_YUV_DITHER) + { + do + { + lcd_send_command(R_Y_ADDR_AREA, y); + lcd_send_command(y + 1, 0); + +#ifndef SANSA_C200V2 // TODO + lcd_write_yuv420_lines_odither(yuv_src, width, stride, x, y); +#endif + yuv_src[0] += stride << 1; /* Skip down two luma lines */ + yuv_src[1] += stride >> 1; /* Skip down one chroma line */ + yuv_src[2] += stride >> 1; + y += 2; + } + while (--height > 0); + } + else + { + do + { + lcd_send_command(R_Y_ADDR_AREA, y); + lcd_send_command(y + 1, 0); + +#ifndef SANSA_C200V2 // TODO + lcd_write_yuv420_lines(yuv_src, width, stride); +#endif + yuv_src[0] += stride << 1; /* Skip down two luma lines */ + yuv_src[1] += stride >> 1; /* Skip down one chroma line */ + yuv_src[2] += stride >> 1; + y += 2; + } + while (--height > 0); + } + +#ifdef SANSA_C200V2 + lcd_busy = false; +#endif +} + +/* 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 x, int y, int width, int height) +{ + const fb_data *addr; + + if (x + width >= LCD_WIDTH) + width = LCD_WIDTH - x; + if (y + height >= LCD_HEIGHT) + height = LCD_HEIGHT - y; + + if ((width <= 0) || (height <= 0)) + return; /* Nothing left to do. */ + + addr = &lcd_framebuffer[y][x]; + +#ifdef SANSA_C200V2 + lcd_busy = true; +#endif + + if (width <= 1) { + /* The X end address must be larger than the X start address, so we + * switch to vertical mode for single column updates and set the + * window width to 2 */ + lcd_send_command(R_ENTRY_MODE, 0x80); + lcd_send_command(R_X_ADDR_AREA, x); + lcd_send_command(x + 1, 0); + } else { + lcd_send_command(R_ENTRY_MODE, 0x82); + lcd_send_command(R_X_ADDR_AREA, x); + lcd_send_command(x + width - 1, 0); + } + + lcd_send_command(R_Y_ADDR_AREA, y + 0x1a); + lcd_send_command(y + height - 1 + 0x1a, 0); + + do { + lcd_send_data(addr, width); + addr += LCD_WIDTH; + } while (--height > 0); + +#ifdef SANSA_C200V2 + lcd_busy = false; +#endif +} -- cgit v1.2.3