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ugfx/drivers/gdisp/S6D1121/gdisp_lld.c
Abhishek Kumar 674bcb52d2 GPIO interface-related fixes 
Adding acquire_bus() and release_bus()
so that orientation setting commands are
not ignored.
2013-03-30 16:08:47 +05:30

584 lines
16 KiB
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/*
ChibiOS/GFX - Copyright (C) 2012, 2013
Joel Bodenmann aka Tectu <joel@unormal.org>
This file is part of ChibiOS/GFX.
ChibiOS/GFX 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 3 of the License, or
(at your option) any later version.
ChibiOS/GFX 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, see <http://www.gnu.org/licenses/>.
*/
/**
* @file drivers/gdisp/S6D1121/gdisp_lld.c
* @brief GDISP Graphics Driver subsystem low level driver source for the S6d1121 display.
*
* @addtogroup GDISP
* @{
*/
#include "ch.h"
#include "hal.h"
#include "gfx.h"
#if GFX_USE_GDISP /*|| defined(__DOXYGEN__)*/
/* Include the emulation code for things we don't support */
#include "gdisp/lld/emulation.c"
/*===========================================================================*/
/* Driver local definitions. */
/*===========================================================================*/
#if defined(GDISP_SCREEN_HEIGHT)
#warning "GDISP: This low level driver does not support setting a screen size. It is being ignored."
#undef GISP_SCREEN_HEIGHT
#endif
#if defined(GDISP_SCREEN_WIDTH)
#warning "GDISP: This low level driver does not support setting a screen size. It is being ignored."
#undef GDISP_SCREEN_WIDTH
#endif
#define GDISP_SCREEN_HEIGHT 320
#define GDISP_SCREEN_WIDTH 240
#define GDISP_INITIAL_CONTRAST 50
#define GDISP_INITIAL_BACKLIGHT 100
/*===========================================================================*/
/* Driver local definitions. */
/*===========================================================================*/
#if defined(GDISP_USE_CUSTOM_BOARD) && GDISP_USE_CUSTOM_BOARD
/* Include the user supplied board definitions */
#include "gdisp_lld_board.h"
#elif defined(BOARD_OLIMEX_STM32_E407)
#include "gdisp_lld_board_olimex_e407.h"
#else
#include "gdisp_lld_board.h"
#endif
/* Some common routines and macros */
#define write_reg(reg, data) { write_index(reg); write_data(data); }
#define stream_start() write_index(0x0022);
#define stream_stop()
#define delay(us) chThdSleepMicroseconds(us)
#define delayms(ms) chThdSleepMilliseconds(ms)
static inline void set_cursor(coord_t x, coord_t y) {
/* R20h - 8 bit
* R21h - 9 bit
*/
switch(GDISP.Orientation) {
case GDISP_ROTATE_0:
write_reg(0x0020, x & 0x00FF);
write_reg(0x0021, y & 0x01FF);
break;
case GDISP_ROTATE_90:
/* Note X has already been mirrored, so we do it directly */
write_reg(0x0020, y & 0x00FF);
write_reg(0x0021, x & 0x01FF);
break;
case GDISP_ROTATE_180:
write_reg(0x0020, (GDISP_SCREEN_WIDTH - 1 - x) & 0x00FF);
write_reg(0x0021, (GDISP_SCREEN_HEIGHT - 1 - y) & 0x01FF);
break;
case GDISP_ROTATE_270:
write_reg(0x0020, (GDISP_SCREEN_WIDTH - 1 - y) & 0x00FF);
write_reg(0x0021, (GDISP_SCREEN_HEIGHT - 1 - x) & 0x01FF);
break;
}
}
static inline void set_viewport(coord_t x, coord_t y, coord_t cx, coord_t cy) {
/* HSA / HEA are 8 bit
* VSA / VEA are 9 bit
* use masks 0x00FF and 0x01FF to enforce this
*/
switch(GDISP.Orientation) {
case GDISP_ROTATE_0:
write_reg(0x46, (((x + cx - 1) << 8) & 0xFF00 ) |
(x & 0x00FF));
write_reg(0x48, y & 0x01FF);
write_reg(0x47, (y + cy - 1) & 0x01FF);
break;
case GDISP_ROTATE_90:
write_reg(0x46, (((y + cy - 1) << 8) & 0xFF00) |
(y & 0x00FF));
write_reg(0x48, x & 0x01FF);
write_reg(0x47, (x + cx - 1) & 0x01FF);
break;
case GDISP_ROTATE_180:
write_reg(0x46, (((GDISP_SCREEN_WIDTH - x - 1) & 0x00FF) << 8) |
((GDISP_SCREEN_WIDTH - (x + cx)) & 0x00FF));
write_reg(0x48, (GDISP_SCREEN_HEIGHT - (y + cy)) & 0x01FF);
write_reg(0x47, (GDISP_SCREEN_HEIGHT- y - 1) & 0x01FF);
break;
case GDISP_ROTATE_270:
write_reg(0x46, (((GDISP_SCREEN_WIDTH - y - 1) & 0x00FF) << 8) |
((GDISP_SCREEN_WIDTH - (y + cy)) & 0x00FF));
write_reg(0x48, (GDISP_SCREEN_HEIGHT - (x + cx)) & 0x01FF);
write_reg(0x47, (GDISP_SCREEN_HEIGHT - x - 1) & 0x01FF);
break;
}
set_cursor(x, y);
}
static inline void reset_viewport(void) {
switch(GDISP.Orientation) {
case GDISP_ROTATE_0:
case GDISP_ROTATE_180:
set_viewport(0, 0, GDISP_SCREEN_WIDTH, GDISP_SCREEN_HEIGHT);
break;
case GDISP_ROTATE_90:
case GDISP_ROTATE_270:
set_viewport(0, 0, GDISP_SCREEN_HEIGHT, GDISP_SCREEN_WIDTH);
break;
}
}
bool_t gdisp_lld_init(void) {
/* initialize the hardware */
init_board();
/* Hardware reset */
setpin_reset(TRUE);
delayms(20);
setpin_reset(TRUE);
delayms(20);
/* Get the bus for the following initialisation commands */
acquire_bus();
write_reg(0x11,0x2004);
write_reg(0x13,0xCC00);
write_reg(0x15,0x2600);
write_reg(0x14,0x252A);
write_reg(0x12,0x0033);
write_reg(0x13,0xCC04);
delayms(1);
write_reg(0x13,0xCC06);
delayms(1);
write_reg(0x13,0xCC4F);
delayms(1);
write_reg(0x13,0x674F);
write_reg(0x11,0x2003);
delayms(1);
// Gamma Setting
write_reg(0x30,0x2609);
write_reg(0x31,0x242C);
write_reg(0x32,0x1F23);
write_reg(0x33,0x2425);
write_reg(0x34,0x2226);
write_reg(0x35,0x2523);
write_reg(0x36,0x1C1A);
write_reg(0x37,0x131D);
write_reg(0x38,0x0B11);
write_reg(0x39,0x1210);
write_reg(0x3A,0x1315);
write_reg(0x3B,0x3619);
write_reg(0x3C,0x0D00);
write_reg(0x3D,0x000D);
write_reg(0x16,0x0007);
write_reg(0x02,0x0013);
write_reg(0x03,0x0003);
write_reg(0x01,0x0127);
delayms(1);
write_reg(0x08,0x0303);
write_reg(0x0A,0x000B);
write_reg(0x0B,0x0003);
write_reg(0x0C,0x0000);
write_reg(0x41,0x0000);
write_reg(0x50,0x0000);
write_reg(0x60,0x0005);
write_reg(0x70,0x000B);
write_reg(0x71,0x0000);
write_reg(0x78,0x0000);
write_reg(0x7A,0x0000);
write_reg(0x79,0x0007);
write_reg(0x07,0x0051);
delayms(1);
write_reg(0x07,0x0053);
write_reg(0x79,0x0000);
reset_viewport();
set_backlight(GDISP_INITIAL_BACKLIGHT);
/* Now initialise the GDISP structure */
GDISP.Width = GDISP_SCREEN_WIDTH;
GDISP.Height = GDISP_SCREEN_HEIGHT;
GDISP.Orientation = GDISP_ROTATE_0;
GDISP.Powermode = powerOn;
GDISP.Backlight = 100;
GDISP.Contrast = 50;
#if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP
GDISP.clipx0 = 0;
GDISP.clipy0 = 0;
GDISP.clipx1 = GDISP.Width;
GDISP.clipy1 = GDISP.Height;
#endif
return TRUE;
}
/**
* @brief Draws a pixel on the display.
*
* @param[in] x X location of the pixel
* @param[in] y Y location of the pixel
* @param[in] color The color of the pixel
*
* @notapi
*/
void gdisp_lld_draw_pixel(coord_t x, coord_t y, color_t color) {
#if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP
if (x < GDISP.clipx0 || y < GDISP.clipy0 || x >= GDISP.clipx1 || y >= GDISP.clipy1) return;
#endif
acquire_bus();
set_cursor(x, y);
write_reg(0x0022, color);
release_bus();
}
/* ---- Optional Routines ---- */
#if GDISP_HARDWARE_CLEARS || defined(__DOXYGEN__)
/**
* @brief Clear the display.
* @note Optional - The high level driver can emulate using software.
*
* @param[in] color The color of the pixel
*
* @notapi
*/
void gdisp_lld_clear(color_t color) {
unsigned i;
acquire_bus();
set_cursor(0, 0);
stream_start();
for(i = 0; i < GDISP_SCREEN_WIDTH * GDISP_SCREEN_HEIGHT; i++)
write_data(color);
stream_stop();
release_bus();
}
#endif
#if GDISP_HARDWARE_FILLS || defined(__DOXYGEN__)
/**
* @brief Fill an area with a color.
* @note Optional - The high level driver can emulate using software.
*
* @param[in] x, y The start filled area
* @param[in] cx, cy The width and height to be filled
* @param[in] color The color of the fill
*
* @notapi
*/
void gdisp_lld_fill_area(coord_t x, coord_t y, coord_t cx, coord_t cy, color_t color) {
unsigned i, area;
#if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP
if (x < GDISP.clipx0) { cx -= GDISP.clipx0 - x; x = GDISP.clipx0; }
if (y < GDISP.clipy0) { cy -= GDISP.clipy0 - y; y = GDISP.clipy0; }
if (cx <= 0 || cy <= 0 || x >= GDISP.clipx1 || y >= GDISP.clipy1) return;
if (x+cx > GDISP.clipx1) cx = GDISP.clipx1 - x;
if (y+cy > GDISP.clipy1) cy = GDISP.clipy1 - y;
#endif
area = cx*cy;
acquire_bus();
set_viewport(x, y, cx, cy);
stream_start();
for(i = 0; i < area; i++)
write_data(color);
stream_stop();
reset_viewport();
release_bus();
}
#endif
#if GDISP_HARDWARE_BITFILLS || defined(__DOXYGEN__)
/**
* @brief Fill an area with a bitmap.
* @note Optional - The high level driver can emulate using software.
*
* @param[in] x, y The start filled area
* @param[in] cx, cy The width and height to be filled
* @param[in] srcx, srcy The bitmap position to start the fill from
* @param[in] srccx The width of a line in the bitmap.
* @param[in] buffer The pixels to use to fill the area.
*
* @notapi
*/
void gdisp_lld_blit_area_ex(coord_t x, coord_t y, coord_t cx, coord_t cy, coord_t srcx, coord_t srcy, coord_t srccx, const pixel_t *buffer) {
coord_t endx, endy;
unsigned lg;
#if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP
if (x < GDISP.clipx0) { cx -= GDISP.clipx0 - x; srcx += GDISP.clipx0 - x; x = GDISP.clipx0; }
if (y < GDISP.clipy0) { cy -= GDISP.clipy0 - y; srcy += GDISP.clipy0 - y; y = GDISP.clipy0; }
if (srcx+cx > srccx) cx = srccx - srcx;
if (cx <= 0 || cy <= 0 || x >= GDISP.clipx1 || y >= GDISP.clipy1) return;
if (x+cx > GDISP.clipx1) cx = GDISP.clipx1 - x;
if (y+cy > GDISP.clipy1) cy = GDISP.clipy1 - y;
#endif
acquire_bus();
set_viewport(x, y, cx, cy);
stream_start();
endx = srcx + cx;
endy = y + cy;
lg = srccx - cx;
buffer += srcx + srcy * srccx;
for(; y < endy; y++, buffer += lg)
for(x=srcx; x < endx; x++)
write_data(*buffer++);
stream_stop();
reset_viewport();
release_bus();
}
#endif
#if (GDISP_NEED_PIXELREAD && GDISP_HARDWARE_PIXELREAD) || defined(__DOXYGEN__)
/**
* @brief Get the color of a particular pixel.
* @note Optional.
* @note If x,y is off the screen, the result is undefined.
*
* @param[in] x, y The start of the text
*
* @notapi
*/
color_t gdisp_lld_get_pixel_color(coord_t x, coord_t y) {
/* This routine is marked "DO NOT USE" in the original
* GLCD driver. We just keep our GDISP_HARDWARE_READPIXEL
* turned off for now.
*/
color_t color;
#if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP
if (x < 0 || x >= GDISP.Width || y < 0 || y >= GDISP.Height) return 0;
#endif
aquire_bus();
set_cursor(x, y);
stream_start();
color = lld_lcdReadData();
color = lld_lcdReadData();
stream_stop();
release_bus();
return color;
}
#endif
#if (GDISP_NEED_SCROLL && GDISP_HARDWARE_SCROLL) || defined(__DOXYGEN__)
/**
* @brief Scroll vertically a section of the screen.
* @note Optional.
* @note If x,y + cx,cy is off the screen, the result is undefined.
* @note If lines is >= cy, it is equivelent to a area fill with bgcolor.
*
* @param[in] x, y The start of the area to be scrolled
* @param[in] cx, cy The size of the area to be scrolled
* @param[in] lines The number of lines to scroll (Can be positive or negative)
* @param[in] bgcolor The color to fill the newly exposed area.
*
* @notapi
*/
void gdisp_lld_vertical_scroll(coord_t x, coord_t y, coord_t cx, coord_t cy, int lines, color_t bgcolor) {
/* This is marked as "TODO: Test this" in the original GLCD driver.
* For now we just leave the GDISP_HARDWARE_SCROLL off.
*/
static color_t buf[((GDISP_SCREEN_HEIGHT > GDISP_SCREEN_WIDTH ) ? GDISP_SCREEN_HEIGHT : GDISP_SCREEN_WIDTH)];
coord_t row0, row1;
unsigned i, gap, abslines;
#if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP
if (x < GDISP.clipx0) { cx -= GDISP.clipx0 - x; x = GDISP.clipx0; }
if (y < GDISP.clipy0) { cy -= GDISP.clipy0 - y; y = GDISP.clipy0; }
if (!lines || cx <= 0 || cy <= 0 || x >= GDISP.clipx1 || y >= GDISP.clipy1) return;
if (x+cx > GDISP.clipx1) cx = GDISP.clipx1 - x;
if (y+cy > GDISP.clipy1) cy = GDISP.clipy1 - y;
#endif
abslines = lines < 0 ? -lines : lines;
acquire_bus();
if (abslines >= cy) {
abslines = cy;
gap = 0;
} else {
gap = cy - abslines;
for(i = 0; i < gap; i++) {
if(lines > 0) {
row0 = y + i + lines;
row1 = y + i;
} else {
row0 = (y - i - 1) + lines;
row1 = (y - i - 1);
}
/* read row0 into the buffer and then write at row1*/
set_viewport(x, row0, cx, 1);
lld_lcdReadStreamStart();
lld_lcdReadStream(buf, cx);
lld_lcdReadStreamStop();
set_viewport(x, row1, cx, 1);
stream_start();
write_data(buf, cx);
stream_stop();
}
}
/* fill the remaining gap */
set_viewport(x, lines > 0 ? (y+gap) : y, cx, abslines);
stream_start();
gap = cx*abslines;
for(i = 0; i < gap; i++) write_data(bgcolor);
stream_stop();
reset_viewport();
release_bus();
}
#endif
#if GDISP_HARDWARE_CONTROL || defined(__DOXYGEN__)
/**
* @brief Driver Control
* @details Unsupported control codes are ignored.
* @note The value parameter should always be typecast to (void *).
* @note There are some predefined and some specific to the low level driver.
* @note GDISP_CONTROL_POWER - Takes a gdisp_powermode_t
* GDISP_CONTROL_ORIENTATION - Takes a gdisp_orientation_t
* GDISP_CONTROL_BACKLIGHT - Takes an int from 0 to 100. For a driver
* that only supports off/on anything other
* than zero is on.
* GDISP_CONTROL_CONTRAST - Takes an int from 0 to 100.
* GDISP_CONTROL_LLD - Low level driver control constants start at
* this value.
*
* @param[in] what What to do.
* @param[in] value The value to use (always cast to a void *).
*
* @notapi
*/
void gdisp_lld_control(unsigned what, void *value) {
switch(what) {
case GDISP_CONTROL_POWER:
if (GDISP.Powermode == (gdisp_powermode_t)value)
return;
switch((gdisp_powermode_t)value) {
case powerOff:
/* Code here */
/* break; */
case powerOn:
/* Code here */
/* You may need this ---
if (GDISP.Powermode != powerSleep)
gdisp_lld_init();
*/
/* break; */
case powerSleep:
/* Code here */
/* break; */
default:
return;
}
GDISP.Powermode = (gdisp_powermode_t)value;
return;
case GDISP_CONTROL_ORIENTATION:
if (GDISP.Orientation == (gdisp_orientation_t)value)
return;
switch((gdisp_orientation_t)value) {
case GDISP_ROTATE_0:
acquire_bus();
write_reg(0x0001,0x0127);
write_reg(0x03, 0b0011);
release_bus();
GDISP.Height = GDISP_SCREEN_HEIGHT;
GDISP.Width = GDISP_SCREEN_WIDTH;
break;
case GDISP_ROTATE_90:
acquire_bus();
write_reg(0x0001,0x0027);
write_reg(0x0003, 0b1011);
release_bus();
GDISP.Height = GDISP_SCREEN_WIDTH;
GDISP.Width = GDISP_SCREEN_HEIGHT;
break;
case GDISP_ROTATE_180:
acquire_bus();
write_reg(0x0001,0x0127);
write_reg(0x0003, 0b0000);
release_bus();
GDISP.Height = GDISP_SCREEN_HEIGHT;
GDISP.Width = GDISP_SCREEN_WIDTH;
break;
case GDISP_ROTATE_270:
acquire_bus();
write_reg(0x0001,0x0027);
write_reg(0x0003, 0b1000);
release_bus();
GDISP.Height = GDISP_SCREEN_WIDTH;
GDISP.Width = GDISP_SCREEN_HEIGHT;
break;
default:
return;
}
#if GDISP_NEED_CLIP || GDISP_NEED_VALIDATION
GDISP.clipx0 = 0;
GDISP.clipy0 = 0;
GDISP.clipx1 = GDISP.Width;
GDISP.clipy1 = GDISP.Height;
#endif
GDISP.Orientation = (gdisp_orientation_t)value;
return;
/*
case GDISP_CONTROL_BACKLIGHT:
case GDISP_CONTROL_CONTRAST:
*/
}
}
#endif
#endif /* GFX_USE_GDISP */
/** @} */
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