| /*************************************************************************** |
| * __________ __ ___. |
| * Open \______ \ ____ ____ | | _\_ |__ _______ ___ |
| * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / |
| * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < |
| * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ |
| * \/ \/ \/ \/ \/ |
| * $Id$ |
| * |
| * Copyright (C) 2006 by Barry Wardell |
| * |
| * 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" |
| |
| /** Initialized in lcd_init_device() **/ |
| /* Is the power turned on? */ |
| static bool power_on; |
| /* Is the display turned on? */ |
| static bool display_on; |
| /* Amount of vertical offset. Used for flip offset correction/detection. */ |
| static int y_offset; |
| /* Reverse flag. Must be remembered when display is turned off. */ |
| static unsigned short disp_control_rev; |
| /* Contrast setting << 8 */ |
| static int lcd_contrast; |
| |
| static unsigned lcd_yuv_options SHAREDBSS_ATTR = 0; |
| |
| /* Forward declarations */ |
| static void lcd_display_off(void); |
| |
| /* register defines for the Renesas HD66773R */ |
| #define R_START_OSC 0x00 |
| #define R_DEVICE_CODE_READ 0x00 |
| #define R_DRV_OUTPUT_CONTROL 0x01 |
| #define R_DRV_AC_CONTROL 0x02 |
| #define R_POWER_CONTROL1 0x03 |
| #define R_POWER_CONTROL2 0x04 |
| #define R_ENTRY_MODE 0x05 |
| #define R_COMPARE_REG 0x06 |
| #define R_DISP_CONTROL 0x07 |
| #define R_FRAME_CYCLE_CONTROL 0x0b |
| #define R_POWER_CONTROL3 0x0c |
| #define R_POWER_CONTROL4 0x0d |
| #define R_POWER_CONTROL5 0x0e |
| #define R_GATE_SCAN_START_POS 0x0f |
| #define R_VERT_SCROLL_CONTROL 0x11 |
| #define R_1ST_SCR_DRV_POS 0x14 |
| #define R_2ND_SCR_DRV_POS 0x15 |
| #define R_HORIZ_RAM_ADDR_POS 0x16 |
| #define R_VERT_RAM_ADDR_POS 0x17 |
| #define R_RAM_WRITE_DATA_MASK 0x20 |
| #define R_RAM_ADDR_SET 0x21 |
| #define R_WRITE_DATA_2_GRAM 0x22 |
| #define R_RAM_READ_DATA 0x22 |
| #define R_GAMMA_FINE_ADJ_POS1 0x30 |
| #define R_GAMMA_FINE_ADJ_POS2 0x31 |
| #define R_GAMMA_FINE_ADJ_POS3 0x32 |
| #define R_GAMMA_GRAD_ADJ_POS 0x33 |
| #define R_GAMMA_FINE_ADJ_NEG1 0x34 |
| #define R_GAMMA_FINE_ADJ_NEG2 0x35 |
| #define R_GAMMA_FINE_ADJ_NEG3 0x36 |
| #define R_GAMMA_GRAD_ADJ_NEG 0x37 |
| #define R_GAMMA_AMP_ADJ_POS 0x3a |
| #define R_GAMMA_AMP_ADJ_NEG 0x3b |
| |
| static inline void lcd_wait_write(void) |
| { |
| while (LCD2_PORT & LCD2_BUSY_MASK); |
| } |
| |
| /* Send command */ |
| static inline void lcd_send_cmd(unsigned v) |
| { |
| lcd_wait_write(); |
| LCD2_PORT = LCD2_CMD_MASK; |
| LCD2_PORT = LCD2_CMD_MASK | v; |
| } |
| |
| /* Send 16-bit data */ |
| static inline void lcd_send_data(unsigned v) |
| { |
| lcd_wait_write(); |
| LCD2_PORT = LCD2_DATA_MASK | (v >> 8); /* Send MSB first */ |
| LCD2_PORT = LCD2_DATA_MASK | (v & 0xff); |
| } |
| |
| /* Send 16-bit data byte-swapped. Only needed until we can use block transfer. */ |
| static inline void lcd_send_data_swapped(unsigned v) |
| { |
| lcd_wait_write(); |
| LCD2_PORT = LCD2_DATA_MASK | (v & 0xff); /* Send LSB first */ |
| LCD2_PORT = LCD2_DATA_MASK | (v >> 8); |
| } |
| |
| /* Write value to register */ |
| static void lcd_write_reg(int reg, int val) |
| { |
| lcd_send_cmd(reg); |
| lcd_send_data(val); |
| } |
| |
| /*** hardware configuration ***/ |
| |
| int lcd_default_contrast(void) |
| { |
| return DEFAULT_CONTRAST_SETTING; |
| } |
| |
| void lcd_set_contrast(int val) |
| { |
| /* Clamp val in range 0-14, 16-30 */ |
| if (val < 1) |
| val = 0; |
| else if (val <= 15) |
| --val; |
| else if (val > 30) |
| val = 30; |
| |
| lcd_contrast = val << 8; |
| |
| if (!power_on) |
| return; |
| |
| /* VCOMG=1, VDV4-0=xxxxx, VCM4-0=11000 */ |
| lcd_write_reg(R_POWER_CONTROL5, 0x2018 | lcd_contrast); |
| } |
| |
| void lcd_set_invert_display(bool yesno) |
| { |
| if (yesno == (disp_control_rev == 0x0000)) |
| return; |
| |
| disp_control_rev = yesno ? 0x0000 : 0x0004; |
| |
| if (!display_on) |
| return; |
| |
| /* PT1-0=00, VLE2-1=00, SPT=0, GON=1, DTE=1, REV=x, D1-0=11 */ |
| lcd_write_reg(R_DISP_CONTROL, 0x0033 | disp_control_rev); |
| } |
| |
| |
| /* turn the display upside down (call lcd_update() afterwards) */ |
| void lcd_set_flip(bool yesno) |
| { |
| if (yesno == (y_offset != 0)) |
| return; |
| |
| /* The LCD controller is 132x160 while the LCD itself is 128x160, so we need |
| * to shift the origin by 4 when we flip the LCD */ |
| y_offset = yesno ? 4 : 0; |
| |
| if (!power_on) |
| return; |
| |
| /* SCN4-0=000x0 (G1/G160) */ |
| lcd_write_reg(R_GATE_SCAN_START_POS, yesno ? 0x0002 : 0x0000); |
| /* SM=0, GS=x, SS=x, NL4-0=10011 (G1-G160) */ |
| lcd_write_reg(R_DRV_OUTPUT_CONTROL, yesno ? 0x0213 : 0x0113); |
| } |
| |
| /* LCD init */ |
| void lcd_init_device(void) |
| { |
| #ifndef BOOTLOADER |
| /* The OF won't boot if this is done in the bootloader - ideally we should |
| tweak the lcd controller speed settings but this will do for now */ |
| CLCD_CLOCK_SRC |= 0xc0000000; /* Set LCD interface clock to PLL */ |
| #endif |
| power_on = true; |
| display_on = true; |
| y_offset = 0; |
| disp_control_rev = 0x0004; |
| lcd_contrast = DEFAULT_CONTRAST_SETTING << 8; |
| } |
| |
| static void lcd_power_on(void) |
| { |
| /* Be sure standby bit is clear. */ |
| /* BT2-0=000, DC2-0=000, AP2-0=000, SLP=0, STB=0 */ |
| lcd_write_reg(R_POWER_CONTROL1, 0x0000); |
| |
| /** Power ON Sequence **/ |
| /* Per datasheet Rev.1.10, Jun.21.2003, p. 99 */ |
| |
| lcd_write_reg(R_START_OSC, 0x0001); /* Start Oscillation */ |
| /* 10ms or more for oscillation circuit to stabilize */ |
| sleep(HZ/50); |
| /* Instruction (1) for power setting; VC2-0, VRH3-0, CAD, |
| VRL3-0, VCM4-0, VDV4-0 */ |
| /* VC2-0=001 */ |
| lcd_write_reg(R_POWER_CONTROL3, 0x0001); |
| /* VRL3-0=0100, PON=0, VRH3-0=0001 */ |
| lcd_write_reg(R_POWER_CONTROL4, 0x0401); |
| /* CAD=1 */ |
| lcd_write_reg(R_POWER_CONTROL2, 0x8000); |
| /* VCOMG=0, VDV4-0=xxxxx (19), VCM4-0=11000 */ |
| lcd_write_reg(R_POWER_CONTROL5, 0x0018 | lcd_contrast); |
| /* Instruction (2) for power setting; BT2-0, DC2-0, AP2-0 */ |
| /* BT2-0=000, DC2-0=001, AP2-0=011, SLP=0, STB=0 */ |
| lcd_write_reg(R_POWER_CONTROL1, 0x002c); |
| /* Instruction (3) for power setting; VCOMG = "1" */ |
| /* VCOMG=1, VDV4-0=xxxxx (19), VCM4-0=11000 */ |
| lcd_write_reg(R_POWER_CONTROL5, 0x2018 | lcd_contrast); |
| |
| /* 40ms or more; time for step-up circuits 1,2 to stabilize */ |
| sleep(HZ/25); |
| |
| /* Instruction (4) for power setting; PON = "1" */ |
| /* VRL3-0=0100, PON=1, VRH3-0=0001 */ |
| lcd_write_reg(R_POWER_CONTROL4, 0x0411); |
| |
| /* 40ms or more; time for step-up circuit 4 to stabilize */ |
| sleep(HZ/25); |
| |
| /* Instructions for other mode settings (in register order). */ |
| /* SM=0, GS=x, SS=0, NL4-0=10011 (G1-G160)*/ |
| lcd_write_reg(R_DRV_OUTPUT_CONTROL, y_offset ? 0x0013 : 0x0113); /* different to X5 */ |
| /* FLD1-0=01 (1 field), B/C=1, EOR=1 (C-pat), NW5-0=000000 (1 row) */ |
| lcd_write_reg(R_DRV_AC_CONTROL, 0x0700); |
| /* DIT=0, BGR=1, HWM=0, I/D1-0=10, AM=1, LG2-0=000 */ |
| lcd_write_reg(R_ENTRY_MODE, 0x1028); /* different to X5 */ |
| /* CP15-0=0000000000000000 */ |
| lcd_write_reg(R_COMPARE_REG, 0x0000); |
| /* NO1-0=01, SDT1-0=00, EQ1-0=00, DIV1-0=00, RTN3-00000 */ |
| lcd_write_reg(R_FRAME_CYCLE_CONTROL, 0x4000); |
| /* SCN4-0=000x0 (G1/G160) */ |
| /* lcd_write_reg(R_GATE_SCAN_START_POS, y_offset ? 0x0000 : 0x0002); */ |
| /* VL7-0=0x00 */ |
| lcd_write_reg(R_VERT_SCROLL_CONTROL, 0x0000); |
| /* SE17-10(End)=0x9f (159), SS17-10(Start)=0x00 */ |
| lcd_write_reg(R_1ST_SCR_DRV_POS, 0x9f00); |
| /* SE27-20(End)=0x5c (92), SS27-20(Start)=0x00 */ |
| lcd_write_reg(R_2ND_SCR_DRV_POS, 0x5c00); |
| /* HEA7-0=7f, HSA7-0=00 */ |
| lcd_write_reg(R_HORIZ_RAM_ADDR_POS, 0x7f00); |
| /* PKP12-10=0x0, PKP02-00=0x0 */ |
| lcd_write_reg(R_GAMMA_FINE_ADJ_POS1, 0x0003); |
| /* PKP32-30=0x4, PKP22-20=0x0 */ |
| lcd_write_reg(R_GAMMA_FINE_ADJ_POS2, 0x0400); |
| /* PKP52-50=0x4, PKP42-40=0x7 */ |
| lcd_write_reg(R_GAMMA_FINE_ADJ_POS3, 0x0407); |
| /* PRP12-10=0x3, PRP02-00=0x5 */ |
| lcd_write_reg(R_GAMMA_GRAD_ADJ_POS, 0x0305); |
| /* PKN12-10=0x0, PKN02-00=0x3 */ |
| lcd_write_reg(R_GAMMA_FINE_ADJ_NEG1, 0x0003); |
| /* PKN32-30=0x7, PKN22-20=0x4 */ |
| lcd_write_reg(R_GAMMA_FINE_ADJ_NEG2, 0x0704); |
| /* PKN52-50=0x4, PRN42-40=0x7 */ |
| lcd_write_reg(R_GAMMA_FINE_ADJ_NEG3, 0x0407); |
| /* PRN12-10=0x5, PRN02-00=0x3 */ |
| lcd_write_reg(R_GAMMA_GRAD_ADJ_NEG, 0x0503); |
| /* VRP14-10=0x14, VRP03-00=0x09 */ |
| lcd_write_reg(R_GAMMA_AMP_ADJ_POS, 0x1409); |
| /* VRN14-00=0x06, VRN03-00=0x02 */ |
| lcd_write_reg(R_GAMMA_AMP_ADJ_NEG, 0x0602); |
| |
| /* 100ms or more; time for step-up circuits to stabilize */ |
| sleep(HZ/10); |
| |
| power_on = true; |
| } |
| |
| static void lcd_power_off(void) |
| { |
| /* Display must be off first */ |
| if (display_on) |
| lcd_display_off(); |
| |
| power_on = false; |
| |
| /** Power OFF sequence **/ |
| /* Per datasheet Rev.1.10, Jun.21.2003, p. 99 */ |
| |
| /* Step-up1 halt setting bit */ |
| /* BT2-0=110, DC2-0=001, AP2-0=011, SLP=0, STB=0 */ |
| lcd_write_reg(R_POWER_CONTROL1, 0x062c); |
| /* Step-up3,4 halt setting bit */ |
| /* VRL3-0=0100, PON=0, VRH3-0=0001 */ |
| lcd_write_reg(R_POWER_CONTROL4, 0x0401); |
| /* VCOMG=0, VDV4-0=10011, VCM4-0=11000 */ |
| lcd_write_reg(R_POWER_CONTROL5, 0x0018 | lcd_contrast); |
| |
| /* Wait 100ms or more */ |
| sleep(HZ/10); |
| |
| /* Step-up2,amp halt setting bit */ |
| /* BT2-0=000, DC2-0=000, AP2-0=000, SLP=0, STB=0 */ |
| lcd_write_reg(R_POWER_CONTROL1, 0x0000); |
| } |
| |
| static void lcd_display_on(void) |
| { |
| /* Be sure power is on first */ |
| if (!power_on) |
| lcd_power_on(); |
| |
| /** Display ON Sequence **/ |
| /* Per datasheet Rev.1.10, Jun.21.2003, p. 97 */ |
| |
| /* PT1-0=00, VLE2-1=00, SPT=0, GON=0, DTE=0, REV=0, D1-0=01 */ |
| lcd_write_reg(R_DISP_CONTROL, 0x0001); |
| |
| sleep(HZ/25); /* Wait 2 frames or more */ |
| |
| /* PT1-0=00, VLE2-1=00, SPT=0, GON=1, DTE=0, REV=x, D1-0=01 */ |
| lcd_write_reg(R_DISP_CONTROL, 0x0021 | disp_control_rev); |
| /* PT1-0=00, VLE2-1=00, SPT=0, GON=1, DTE=0, REV=x, D1-0=11 */ |
| lcd_write_reg(R_DISP_CONTROL, 0x0023 | disp_control_rev); |
| |
| sleep(HZ/25); /* Wait 2 frames or more */ |
| |
| /* PT1-0=00, VLE2-1=00, SPT=0, GON=1, DTE=1, REV=x, D1-0=11 */ |
| lcd_write_reg(R_DISP_CONTROL, 0x0033 | disp_control_rev); |
| |
| display_on = true; |
| } |
| |
| static void lcd_display_off(void) |
| { |
| display_on = false; |
| |
| /** Display OFF sequence **/ |
| /* Per datasheet Rev.1.10, Jun.21.2003, p. 97 */ |
| |
| /* EQ1-0=00 already */ |
| |
| /* PT1-0=00, VLE2-1=00, SPT=0, GON=1, DTE=1, REV=x, D1-0=10 */ |
| lcd_write_reg(R_DISP_CONTROL, 0x0032 | disp_control_rev); |
| |
| sleep(HZ/25); /* Wait 2 frames or more */ |
| |
| /* PT1-0=00, VLE2-1=00, SPT=0, GON=1, DTE=0, REV=x, D1-0=10 */ |
| lcd_write_reg(R_DISP_CONTROL, 0x0022 | disp_control_rev); |
| |
| sleep(HZ/25); /* Wait 2 frames or more */ |
| |
| /* PT1-0=00, VLE2-1=00, SPT=0, GON=0, DTE=0, REV=0, D1-0=00 */ |
| lcd_write_reg(R_DISP_CONTROL, 0x0000); |
| } |
| |
| void lcd_enable(bool on) |
| { |
| if (on == display_on) |
| return; |
| |
| if (on) |
| { |
| lcd_display_on(); |
| /* Probably out of sync and we don't wanna pepper the code with |
| lcd_update() calls for this. */ |
| lcd_update(); |
| lcd_call_enable_hook(); |
| } |
| else |
| { |
| lcd_display_off(); |
| } |
| } |
| |
| bool lcd_enabled(void) |
| { |
| return display_on; |
| } |
| |
| void lcd_sleep(void) |
| { |
| if (power_on) |
| lcd_power_off(); |
| |
| /* Set standby mode */ |
| /* BT2-0=000, DC2-0=000, AP2-0=000, SLP=0, STB=1 */ |
| lcd_write_reg(R_POWER_CONTROL1, 0x0001); |
| } |
| |
| /*** 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) |
| { |
| const unsigned char *yuv_src[3]; |
| const unsigned char *ysrc_max; |
| int y0; |
| int options; |
| |
| if (!display_on) |
| return; |
| |
| width &= ~1; |
| height &= ~1; |
| |
| /* calculate the drawing region */ |
| |
| /* The 20GB LCD is actually 128x160 but rotated 90 degrees so the origin |
| * is actually the bottom left and horizontal and vertical are swapped. |
| * Rockbox expects the origin to be the top left so we need to use |
| * 127 - y instead of just y */ |
| |
| /* max vert << 8 | start vert */ |
| lcd_write_reg(R_VERT_RAM_ADDR_POS, ((x + width - 1) << 8) | x); |
| |
| y0 = LCD_HEIGHT - 1 - y + y_offset; |
| |
| /* DIT=0, BGR=1, HWM=0, I/D1-0=10, AM=0, LG2-0=000 */ |
| lcd_write_reg(R_ENTRY_MODE, 0x1020); |
| |
| yuv_src[0] = src[0] + src_y * stride + src_x; |
| yuv_src[1] = src[1] + (src_y * stride >> 2) + (src_x >> 1); |
| yuv_src[2] = src[2] + (yuv_src[1] - src[1]); |
| ysrc_max = yuv_src[0] + height * stride; |
| |
| options = lcd_yuv_options; |
| |
| do |
| { |
| /* max horiz << 8 | start horiz */ |
| lcd_write_reg(R_HORIZ_RAM_ADDR_POS, (y0 << 8) | (y0 - 1)); |
| |
| /* position cursor (set AD0-AD15) */ |
| /* start vert << 8 | start horiz */ |
| lcd_write_reg(R_RAM_ADDR_SET, (x << 8) | y0); |
| |
| /* start drawing */ |
| lcd_send_cmd(R_WRITE_DATA_2_GRAM); |
| |
| if (options & LCD_YUV_DITHER) |
| { |
| lcd_write_yuv420_lines_odither(yuv_src, width, stride, |
| x, y); |
| y -= 2; |
| } |
| else |
| { |
| lcd_write_yuv420_lines(yuv_src, width, stride); |
| } |
| |
| y0 -= 2; |
| yuv_src[0] += stride << 1; |
| yuv_src[1] += stride >> 1; |
| yuv_src[2] += stride >> 1; |
| } |
| while (yuv_src[0] < ysrc_max); |
| |
| /* DIT=0, BGR=1, HWM=0, I/D1-0=10, AM=1, LG2-0=000 */ |
| lcd_write_reg(R_ENTRY_MODE, 0x1028); |
| } |
| |
| |
| /* Update a fraction of the display. */ |
| void lcd_update_rect(int x0, int y0, int width, int height) |
| { |
| int x1, y1; |
| unsigned short *addr; |
| |
| if (!display_on) |
| return; |
| |
| /* calculate the drawing region */ |
| y1 = (y0 + height) - 1; /* max vert */ |
| x1 = (x0 + width) - 1; /* max horiz */ |
| |
| if(x1 >= LCD_WIDTH) |
| x1 = LCD_WIDTH - 1; |
| if (x1 <= 0) |
| return; /* nothing left to do, 0 is harmful to lcd_write_data() */ |
| if(y1 >= LCD_HEIGHT) |
| y1 = LCD_HEIGHT-1; |
| |
| /* The 20GB LCD is actually 128x160 but rotated 90 degrees so the origin |
| * is actually the bottom left and horizontal and vertical are swapped. |
| * Rockbox expects the origin to be the top left so we need to use |
| * 127 - y instead of just y */ |
| |
| /* max horiz << 8 | start horiz */ |
| lcd_send_cmd(R_HORIZ_RAM_ADDR_POS); |
| lcd_send_data( (((LCD_HEIGHT-1)-y0+y_offset) << 8) | ((LCD_HEIGHT-1)-y1+y_offset) ); |
| |
| /* max vert << 8 | start vert */ |
| lcd_send_cmd(R_VERT_RAM_ADDR_POS); |
| lcd_send_data((x1 << 8) | x0); |
| |
| /* position cursor (set AD0-AD15) */ |
| /* start vert << 8 | start horiz */ |
| lcd_send_cmd(R_RAM_ADDR_SET); |
| lcd_send_data( (x0 << 8) | ((LCD_HEIGHT-1)-y0+y_offset) ); |
| |
| /* start drawing */ |
| lcd_send_cmd(R_WRITE_DATA_2_GRAM); |
| |
| addr = (unsigned short*)&lcd_framebuffer[y0][x0]; |
| |
| int c, r; |
| |
| /* for each row */ |
| for (r = 0; r < height; r++) { |
| /* for each column */ |
| for (c = 0; c < width; c++) { |
| /* output 1 pixel */ |
| lcd_send_data_swapped(*addr++); |
| } |
| |
| addr += LCD_WIDTH - width; |
| } |
| } |
| |
| /* 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); |
| } |