+++ /dev/null
-/*
- * (C) Copyright 2003
- *
- * Pantelis Antoniou <panto@intracom.gr>
- * Intracom S.A.
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#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>
-
-#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 */
-}
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