/* * (C) Copyright 2003 * * Pantelis Antoniou <panto@intracom.gr> * Intracom S.A. * * See file CREDITS for list of people who contributed to this * project. * * 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 program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #include <common.h> #include <watchdog.h> #include <sed156x.h> /* configure according to the selected display */ #if defined(CONFIG_SED156X_PG12864Q) #define LCD_WIDTH 128 #define LCD_HEIGHT 64 #define LCD_LINES 64 #define LCD_PAGES 9 #define LCD_COLUMNS 132 #else #error Unsupported SED156x configuration #endif /* include the font data */ #include <video_font.h> #include <video_font_data.h> #if VIDEO_FONT_WIDTH != 8 || VIDEO_FONT_HEIGHT != 16 #error Expecting VIDEO_FONT_WIDTH == 8 && VIDEO_FONT_HEIGHT == 16 #endif #define LCD_BYTE_WIDTH (LCD_WIDTH / 8) #define VIDEO_FONT_BYTE_WIDTH (VIDEO_FONT_WIDTH / 8) #define LCD_TEXT_WIDTH (LCD_WIDTH / VIDEO_FONT_WIDTH) #define LCD_TEXT_HEIGHT (LCD_HEIGHT / VIDEO_FONT_HEIGHT) #define LCD_BYTE_LINESZ (LCD_BYTE_WIDTH * VIDEO_FONT_HEIGHT) const int sed156x_text_width = LCD_TEXT_WIDTH; const int sed156x_text_height = LCD_TEXT_HEIGHT; /**************************************************************************************/ #define SED156X_SPI_RXD() (SED156X_SPI_RXD_PORT & SED156X_SPI_RXD_MASK) #define SED156X_SPI_TXD(x) \ do { \ if (x) \ SED156X_SPI_TXD_PORT |= SED156X_SPI_TXD_MASK; \ else \ SED156X_SPI_TXD_PORT &= ~SED156X_SPI_TXD_MASK; \ } while(0) #define SED156X_SPI_CLK(x) \ do { \ if (x) \ SED156X_SPI_CLK_PORT |= SED156X_SPI_CLK_MASK; \ else \ SED156X_SPI_CLK_PORT &= ~SED156X_SPI_CLK_MASK; \ } while(0) #define SED156X_SPI_CLK_TOGGLE() (SED156X_SPI_CLK_PORT ^= SED156X_SPI_CLK_MASK) #define SED156X_SPI_BIT_DELAY() /* no delay */ #define SED156X_CS(x) \ do { \ if (x) \ SED156X_CS_PORT |= SED156X_CS_MASK; \ else \ SED156X_CS_PORT &= ~SED156X_CS_MASK; \ } while(0) #define SED156X_A0(x) \ do { \ if (x) \ SED156X_A0_PORT |= SED156X_A0_MASK; \ else \ SED156X_A0_PORT &= ~SED156X_A0_MASK; \ } while(0) /**************************************************************************************/ /*** LCD Commands ***/ #define LCD_ON 0xAF /* Display ON */ #define LCD_OFF 0xAE /* Display OFF */ #define LCD_LADDR 0x40 /* Display start line set + (6-bit) address */ #define LCD_PADDR 0xB0 /* Page address set + (4-bit) page */ #define LCD_CADRH 0x10 /* Column address set upper + (4-bit) column hi */ #define LCD_CADRL 0x00 /* Column address set lower + (4-bit) column lo */ #define LCD_ADC_NRM 0xA0 /* ADC select Normal */ #define LCD_ADC_REV 0xA1 /* ADC select Reverse */ #define LCD_DSP_NRM 0xA6 /* LCD display Normal */ #define LCD_DSP_REV 0xA7 /* LCD display Reverse */ #define LCD_DPT_NRM 0xA4 /* Display all points Normal */ #define LCD_DPT_ALL 0xA5 /* Display all points ON */ #define LCD_BIAS9 0xA2 /* LCD bias set 1/9 */ #define LCD_BIAS7 0xA3 /* LCD bias set 1/7 */ #define LCD_CAINC 0xE0 /* Read/modify/write */ #define LCD_CAEND 0xEE /* End */ #define LCD_RESET 0xE2 /* Reset */ #define LCD_C_NRM 0xC0 /* Common output mode select Normal direction */ #define LCD_C_RVS 0xC8 /* Common output mode select Reverse direction */ #define LCD_PWRMD 0x28 /* Power control set + (3-bit) mode */ #define LCD_RESRT 0x20 /* V5 v. reg. int. resistor ratio set + (3-bit) ratio */ #define LCD_EVSET 0x81 /* Electronic volume mode set + byte = (6-bit) volume */ #define LCD_SIOFF 0xAC /* Static indicator OFF */ #define LCD_SION 0xAD /* Static indicator ON + byte = (2-bit) mode */ #define LCD_NOP 0xE3 /* NOP */ #define LCD_TEST 0xF0 /* Test/Test mode reset (Note: *DO NOT USE*) */ /*------------------------------------------------------------------------------- Compound commands ------------------------------------------------------------------------------- Command Description Commands ---------- ------------------------ ------------------------------------- POWS_ON POWER SAVER ON command LCD_OFF, LCD_D_ALL POWS_OFF POWER SAVER OFF command LCD_D_NRM SLEEPON SLEEP mode LCD_SIOFF, POWS_ON SLEEPOFF SLEEP mode cancel LCD_D_NRM, LCD_SION, LCD_SIS_??? STDBYON STAND BY mode LCD_SION, POWS_ON STDBYOFF STAND BY mode cancel LCD_D_NRM -------------------------------------------------------------------------------*/ /*** LCD various parameters ***/ #define LCD_PPB 8 /* Pixels per byte (display is B/W, 1 bit per pixel) */ /*** LCD Status byte masks ***/ #define LCD_S_BUSY 0x80 /* Status Read - BUSY mask */ #define LCD_S_ADC 0x40 /* Status Read - ADC mask */ #define LCD_S_ONOFF 0x20 /* Status Read - ON/OFF mask */ #define LCD_S_RESET 0x10 /* Status Read - RESET mask */ /*** LCD commands parameter masks ***/ #define LCD_M_LADDR 0x3F /* Display start line (6-bit) address mask */ #define LCD_M_PADDR 0x0F /* Page address (4-bit) page mask */ #define LCD_M_CADRH 0x0F /* Column address upper (4-bit) column hi mask */ #define LCD_M_CADRL 0x0F /* Column address lower (4-bit) column lo mask */ #define LCD_M_PWRMD 0x07 /* Power control (3-bit) mode mask */ #define LCD_M_RESRT 0x07 /* V5 v. reg. int. resistor ratio (3-bit) ratio mask */ #define LCD_M_EVSET 0x3F /* Electronic volume mode byte (6-bit) volume mask */ #define LCD_M_SION 0x03 /* Static indicator ON (2-bit) mode mask */ /*** LCD Power control cirquits control masks ***/ #define LCD_PWRBSTR 0x04 /* Power control mode - Booster cirquit ON */ #define LCD_PWRVREG 0x02 /* Power control mode - Voltage regulator cirquit ON */ #define LCD_PWRVFOL 0x01 /* Power control mode - Voltage follower cirquit ON */ /*** LCD Static indicator states ***/ #define LCD_SIS_OFF 0x00 /* Static indicator register set - OFF state */ #define LCD_SIS_BL 0x01 /* Static indicator register set - 1s blink state */ #define LCD_SIS_RBL 0x02 /* Static indicator register set - .5s rapid blink state */ #define LCD_SIS_ON 0x03 /* Static indicator register set - constantly on state */ /*** LCD functions special parameters (commands) ***/ #define LCD_PREVP 0x80 /* Page number for moving to previous */ #define LCD_NEXTP 0x81 /* or next page */ #define LCD_ERR_P 0xFF /* Error in page number */ /*** LCD initialization settings ***/ #define LCD_BIAS LCD_BIAS9 /* Bias: 1/9 */ #define LCD_ADCMODE LCD_ADC_NRM /* ADC mode: normal */ #define LCD_COMDIR LCD_C_NRM /* Common output mode: normal */ #define LCD_RRATIO 0 /* Resistor ratio: 0 */ #define LCD_CNTRST 0x1C /* electronic volume: 1Ch */ #define LCD_POWERM (LCD_PWRBSTR | LCD_PWRVREG | LCD_PWRVFOL) /* Power mode: All on */ /**************************************************************************************/ static inline unsigned int sed156x_transfer(unsigned int val) { unsigned int rx; int b; rx = 0; b = 8; while (--b >= 0) { SED156X_SPI_TXD(val & 0x80); val <<= 1; SED156X_SPI_CLK_TOGGLE(); SED156X_SPI_BIT_DELAY(); rx <<= 1; if (SED156X_SPI_RXD()) rx |= 1; SED156X_SPI_CLK_TOGGLE(); SED156X_SPI_BIT_DELAY(); } return rx; } unsigned int sed156x_data_transfer(unsigned int val) { unsigned int rx; SED156X_SPI_CLK(1); SED156X_CS(0); SED156X_A0(1); rx = sed156x_transfer(val); SED156X_CS(1); return rx; } void sed156x_data_block_transfer(const u8 *p, int size) { SED156X_SPI_CLK(1); SED156X_CS(0); SED156X_A0(1); while (--size >= 0) sed156x_transfer(*p++); SED156X_CS(1); } unsigned int sed156x_cmd_transfer(unsigned int val) { unsigned int rx; SED156X_SPI_CLK(1); SED156X_CS(0); SED156X_A0(0); rx = sed156x_transfer(val); SED156X_CS(1); SED156X_A0(1); return rx; } /******************************************************************************/ static u8 hw_screen[LCD_PAGES][LCD_COLUMNS]; static u8 last_hw_screen[LCD_PAGES][LCD_COLUMNS]; static u8 sw_screen[LCD_BYTE_WIDTH * LCD_HEIGHT]; void sed156x_sync(void) { int i, j, last_page; u8 *d; const u8 *s, *e, *b, *r; u8 v0, v1, v2, v3, v4, v5, v6, v7; /* copy and rotate sw_screen to hw_screen */ for (i = 0; i < LCD_HEIGHT / 8; i++) { d = &hw_screen[i][0]; s = &sw_screen[LCD_BYTE_WIDTH * 8 * i + LCD_BYTE_WIDTH - 1]; for (j = 0; j < LCD_WIDTH / 8; j++) { v0 = s[0 * LCD_BYTE_WIDTH]; v1 = s[1 * LCD_BYTE_WIDTH]; v2 = s[2 * LCD_BYTE_WIDTH]; v3 = s[3 * LCD_BYTE_WIDTH]; v4 = s[4 * LCD_BYTE_WIDTH]; v5 = s[5 * LCD_BYTE_WIDTH]; v6 = s[6 * LCD_BYTE_WIDTH]; v7 = s[7 * LCD_BYTE_WIDTH]; d[0] = ((v7 & 0x01) << 7) | ((v6 & 0x01) << 6) | ((v5 & 0x01) << 5) | ((v4 & 0x01) << 4) | ((v3 & 0x01) << 3) | ((v2 & 0x01) << 2) | ((v1 & 0x01) << 1) | (v0 & 0x01) ; d[1] = ((v7 & 0x02) << 6) | ((v6 & 0x02) << 5) | ((v5 & 0x02) << 4) | ((v4 & 0x02) << 3) | ((v3 & 0x02) << 2) | ((v2 & 0x02) << 1) | ((v1 & 0x02) << 0) | ((v0 & 0x02) >> 1) ; d[2] = ((v7 & 0x04) << 5) | ((v6 & 0x04) << 4) | ((v5 & 0x04) << 3) | ((v4 & 0x04) << 2) | ((v3 & 0x04) << 1) | (v2 & 0x04) | ((v1 & 0x04) >> 1) | ((v0 & 0x04) >> 2) ; d[3] = ((v7 & 0x08) << 4) | ((v6 & 0x08) << 3) | ((v5 & 0x08) << 2) | ((v4 & 0x08) << 1) | (v3 & 0x08) | ((v2 & 0x08) >> 1) | ((v1 & 0x08) >> 2) | ((v0 & 0x08) >> 3) ; d[4] = ((v7 & 0x10) << 3) | ((v6 & 0x10) << 2) | ((v5 & 0x10) << 1) | (v4 & 0x10) | ((v3 & 0x10) >> 1) | ((v2 & 0x10) >> 2) | ((v1 & 0x10) >> 3) | ((v0 & 0x10) >> 4) ; d[5] = ((v7 & 0x20) << 2) | ((v6 & 0x20) << 1) | (v5 & 0x20) | ((v4 & 0x20) >> 1) | ((v3 & 0x20) >> 2) | ((v2 & 0x20) >> 3) | ((v1 & 0x20) >> 4) | ((v0 & 0x20) >> 5) ; d[6] = ((v7 & 0x40) << 1) | (v6 & 0x40) | ((v5 & 0x40) >> 1) | ((v4 & 0x40) >> 2) | ((v3 & 0x40) >> 3) | ((v2 & 0x40) >> 4) | ((v1 & 0x40) >> 5) | ((v0 & 0x40) >> 6) ; d[7] = (v7 & 0x80) | ((v6 & 0x80) >> 1) | ((v5 & 0x80) >> 2) | ((v4 & 0x80) >> 3) | ((v3 & 0x80) >> 4) | ((v2 & 0x80) >> 5) | ((v1 & 0x80) >> 6) | ((v0 & 0x80) >> 7) ; d += 8; s--; } } /* and now output only the differences */ for (i = 0; i < LCD_PAGES; i++) { b = &hw_screen[i][0]; e = &hw_screen[i][LCD_COLUMNS]; d = &last_hw_screen[i][0]; s = b; last_page = -1; /* update only the differences */ do { while (s < e && *s == *d) { s++; d++; } if (s == e) break; r = s; while (s < e && *s != *d) *d++ = *s++; j = r - b; if (i != last_page) { sed156x_cmd_transfer(LCD_PADDR | i); last_page = i; } sed156x_cmd_transfer(LCD_CADRH | ((j >> 4) & 0x0F)); sed156x_cmd_transfer(LCD_CADRL | (j & 0x0F)); sed156x_data_block_transfer(r, s - r); } while (s < e); } /******** for (i = 0; i < LCD_PAGES; i++) { sed156x_cmd_transfer(LCD_PADDR | i); sed156x_cmd_transfer(LCD_CADRH | 0); sed156x_cmd_transfer(LCD_CADRL | 0); sed156x_data_block_transfer(&hw_screen[i][0], LCD_COLUMNS); } memcpy(last_hw_screen, hw_screen, sizeof(last_hw_screen)); ********/ } void sed156x_clear(void) { memset(sw_screen, 0, sizeof(sw_screen)); } void sed156x_output_at(int x, int y, const char *str, int size) { int i, j; u8 *p; const u8 *s; if ((unsigned int)y >= LCD_TEXT_HEIGHT || (unsigned int)x >= LCD_TEXT_WIDTH) return; p = &sw_screen[y * VIDEO_FONT_HEIGHT * LCD_BYTE_WIDTH + x * VIDEO_FONT_BYTE_WIDTH]; while (--size >= 0) { s = &video_fontdata[((int)*str++ & 0xff) * VIDEO_FONT_BYTE_WIDTH * VIDEO_FONT_HEIGHT]; for (i = 0; i < VIDEO_FONT_HEIGHT; i++) { for (j = 0; j < VIDEO_FONT_BYTE_WIDTH; j++) *p++ = *s++; p += LCD_BYTE_WIDTH - VIDEO_FONT_BYTE_WIDTH; } p -= (LCD_BYTE_LINESZ - VIDEO_FONT_BYTE_WIDTH); if (x >= LCD_TEXT_WIDTH) break; x++; } } void sed156x_reverse_at(int x, int y, int size) { int i, j; u8 *p; if ((unsigned int)y >= LCD_TEXT_HEIGHT || (unsigned int)x >= LCD_TEXT_WIDTH) return; p = &sw_screen[y * VIDEO_FONT_HEIGHT * LCD_BYTE_WIDTH + x * VIDEO_FONT_BYTE_WIDTH]; while (--size >= 0) { for (i = 0; i < VIDEO_FONT_HEIGHT; i++) { for (j = 0; j < VIDEO_FONT_BYTE_WIDTH; j++, p++) *p = ~*p; p += LCD_BYTE_WIDTH - VIDEO_FONT_BYTE_WIDTH; } p -= (LCD_BYTE_LINESZ - VIDEO_FONT_BYTE_WIDTH); if (x >= LCD_TEXT_WIDTH) break; x++; } } void sed156x_scroll_line(void) { memmove(&sw_screen[0], &sw_screen[LCD_BYTE_LINESZ], LCD_BYTE_WIDTH * (LCD_HEIGHT - VIDEO_FONT_HEIGHT)); } void sed156x_scroll(int dx, int dy) { u8 *p1 = NULL, *p2 = NULL, *p3 = NULL; /* pacify gcc */ int adx, ady, i, sz; adx = dx > 0 ? dx : -dx; ady = dy > 0 ? dy : -dy; /* overscroll? erase everything */ if (adx >= LCD_TEXT_WIDTH || ady >= LCD_TEXT_HEIGHT) { memset(sw_screen, 0, sizeof(sw_screen)); return; } sz = LCD_BYTE_LINESZ * ady; if (dy > 0) { p1 = &sw_screen[0]; p2 = &sw_screen[sz]; p3 = &sw_screen[LCD_BYTE_WIDTH * LCD_HEIGHT - sz]; } else if (dy < 0) { p1 = &sw_screen[sz]; p2 = &sw_screen[0]; p3 = &sw_screen[0]; } if (ady > 0) { memmove(p1, p2, LCD_BYTE_WIDTH * LCD_HEIGHT - sz); memset(p3, 0, sz); } sz = VIDEO_FONT_BYTE_WIDTH * adx; if (dx > 0) { p1 = &sw_screen[0]; p2 = &sw_screen[0] + sz; p3 = &sw_screen[0] + LCD_BYTE_WIDTH - sz; } else if (dx < 0) { p1 = &sw_screen[0] + sz; p2 = &sw_screen[0]; p3 = &sw_screen[0]; } /* xscroll */ if (adx > 0) { for (i = 0; i < LCD_HEIGHT; i++) { memmove(p1, p2, LCD_BYTE_WIDTH - sz); memset(p3, 0, sz); p1 += LCD_BYTE_WIDTH; p2 += LCD_BYTE_WIDTH; p3 += LCD_BYTE_WIDTH; } } } void sed156x_init(void) { int i; SED156X_CS(1); SED156X_A0(1); /* Send initialization commands to the LCD */ sed156x_cmd_transfer(LCD_OFF); /* Turn display OFF */ sed156x_cmd_transfer(LCD_BIAS); /* set the LCD Bias, */ sed156x_cmd_transfer(LCD_ADCMODE); /* ADC mode, */ sed156x_cmd_transfer(LCD_COMDIR); /* common output mode, */ sed156x_cmd_transfer(LCD_RESRT | LCD_RRATIO); /* resistor ratio, */ sed156x_cmd_transfer(LCD_EVSET); /* electronic volume, */ sed156x_cmd_transfer(LCD_CNTRST); sed156x_cmd_transfer(LCD_PWRMD | LCD_POWERM); /* and power mode */ sed156x_cmd_transfer(LCD_PADDR | 0); /* cursor home */ sed156x_cmd_transfer(LCD_CADRH | 0); sed156x_cmd_transfer(LCD_CADRL | 0); sed156x_cmd_transfer(LCD_LADDR | 0); /* and display start line */ sed156x_cmd_transfer(LCD_DSP_NRM); /* LCD display Normal */ /* clear everything */ memset(sw_screen, 0, sizeof(sw_screen)); memset(hw_screen, 0, sizeof(hw_screen)); memset(last_hw_screen, 0, sizeof(last_hw_screen)); for (i = 0; i < LCD_PAGES; i++) { sed156x_cmd_transfer(LCD_PADDR | i); sed156x_cmd_transfer(LCD_CADRH | 0); sed156x_cmd_transfer(LCD_CADRL | 0); sed156x_data_block_transfer(&hw_screen[i][0], LCD_COLUMNS); } sed156x_clear(); sed156x_sync(); sed156x_cmd_transfer(LCD_ON); /* Turn display ON */ }