/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * * Copyright (c) 2011 by Amaury Pouly * * 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 /* off_t */ #include #include "cpu.h" #include "system.h" #include "kernel.h" #include "backlight-target.h" #include "lcd.h" #include "lcdif-imx233.h" #include "clkctrl-imx233.h" #include "pinctrl-imx233.h" #include "dcp-imx233.h" #include "logf.h" #ifndef BOOTLOADER #include "button.h" #include "font.h" #include "action.h" #endif #ifdef HAVE_LCD_ENABLE static bool lcd_on; #endif static int lcd_dcp_channel = -1; #ifdef HAVE_LCD_INVERT static int lcd_reg_0x61_val = 1; /* used to invert display */ #endif #ifdef HAVE_LCD_FLIP static int lcd_reg_3_val = 0x1030; /* controls to flip display */ #endif static enum lcd_kind_t { LCD_KIND_7783 = 0x7783, LCD_KIND_9325 = 0x9325, } lcd_kind = LCD_KIND_7783; static void setup_parameters(void) { imx233_lcdif_init(); imx233_lcdif_set_lcd_databus_width(18); imx233_lcdif_set_word_length(18); imx233_lcdif_set_timings(1, 2, 2, 2); imx233_lcdif_enable_underflow_recover(true); } static void setup_lcd_pins(bool use_lcdif) { /* WARNING * the B1P22 and B1P24 pins are used by the tuner i2c! Do NOT drive * them as lcd_dotclk and lcd_hsync or it will break the tuner! */ imx233_pinctrl_acquire(1, 18, "lcd reset"); imx233_pinctrl_acquire(1, 19, "lcd rs"); imx233_pinctrl_acquire(1, 20, "lcd wr"); imx233_pinctrl_acquire(1, 21, "lcd cs"); imx233_pinctrl_acquire(1, 23, "lcd enable"); imx233_pinctrl_acquire(1, 25, "lcd vsync"); //imx233_pinctrl_acquire_mask(1, 0x3ffff, "lcd data"); if(use_lcdif) { imx233_pinctrl_set_function(1, 25, PINCTRL_FUNCTION_GPIO); /* lcd_vsync */ imx233_pinctrl_set_function(1, 21, PINCTRL_FUNCTION_MAIN); /* lcd_cs */ imx233_pinctrl_set_function(1, 23, PINCTRL_FUNCTION_GPIO); /* lcd_enable */ imx233_pinctrl_set_function(1, 18, PINCTRL_FUNCTION_MAIN); /* lcd_reset */ imx233_pinctrl_set_function(1, 19, PINCTRL_FUNCTION_MAIN); /* lcd_rs */ imx233_pinctrl_set_function(1, 16, PINCTRL_FUNCTION_MAIN); /* lcd_d16 */ imx233_pinctrl_set_function(1, 17, PINCTRL_FUNCTION_MAIN); /* lcd_d17 */ imx233_pinctrl_set_function(1, 20, PINCTRL_FUNCTION_MAIN); /* lcd_wr */ HW_PINCTRL_MUXSELn_CLR(2) = 0xffffffff; /* lcd_d{0-15} */ } else { HW_PINCTRL_MUXSELn_SET(2) = 0xffffffff; /* lcd_d{0-15} */ HW_PINCTRL_DOEn_CLR(1) = 0x2bfffff; imx233_pinctrl_set_function(1, 16, PINCTRL_FUNCTION_GPIO); /* lcd_d16 */ imx233_pinctrl_set_function(1, 17, PINCTRL_FUNCTION_GPIO); /* lcd_d17 */ imx233_pinctrl_set_function(1, 19, PINCTRL_FUNCTION_GPIO); /* lcd_rs */ imx233_pinctrl_set_function(1, 20, PINCTRL_FUNCTION_GPIO); /* lcd_wr */ imx233_pinctrl_set_function(1, 21, PINCTRL_FUNCTION_GPIO); /* lcd_cs */ imx233_pinctrl_set_function(1, 23, PINCTRL_FUNCTION_GPIO); /* lcd_enable */ imx233_pinctrl_set_function(1, 25, PINCTRL_FUNCTION_GPIO); /* lcd_vsync */ } } static void setup_lcd_pins_i80(bool i80) { if(i80) { imx233_pinctrl_set_drive(1, 19, PINCTRL_DRIVE_12mA); /* lcd_rs */ imx233_pinctrl_set_drive(1, 20, PINCTRL_DRIVE_12mA); /* lcd_wr */ imx233_pinctrl_set_drive(1, 21, PINCTRL_DRIVE_12mA); /* lcd_cs */ imx233_pinctrl_set_drive(1, 23, PINCTRL_DRIVE_12mA); /* lcd_enable */ imx233_pinctrl_set_function(1, 19, PINCTRL_FUNCTION_GPIO); /* lcd_rs */ imx233_pinctrl_set_function(1, 20, PINCTRL_FUNCTION_GPIO); /* lcd_wr */ imx233_pinctrl_set_function(1, 21, PINCTRL_FUNCTION_GPIO); /* lcd_cs */ imx233_pinctrl_set_function(1, 23, PINCTRL_FUNCTION_GPIO); /* lcd_enable */ /* lcd_{rs,wr,cs,enable} */ HW_PINCTRL_DOEn_SET(1) = (1 << 19) | (1 << 20) | (1 << 21) | (1 << 23); HW_PINCTRL_DOUTn_SET(1) = (1 << 19) | (1 << 20) | (1 << 21) | (1 << 23); HW_PINCTRL_DOEn_CLR(1) = 0x3ffff; /* lcd_d{0-17} */ HW_PINCTRL_MUXSELn_SET(2) = 0xffffffff; /* lcd_d{0-15} as GPIO */ imx233_pinctrl_set_function(1, 16, PINCTRL_FUNCTION_GPIO); /* lcd_d16 */ imx233_pinctrl_set_function(1, 17, PINCTRL_FUNCTION_GPIO); /* lcd_d17 */ imx233_pinctrl_set_function(1, 18, PINCTRL_FUNCTION_GPIO); /* lcd_reset */ imx233_pinctrl_set_function(1, 19, PINCTRL_FUNCTION_GPIO); /* lcd_rs */ } else { HW_PINCTRL_DOUTn_SET(1) = (1 << 19) | (1 << 20) | (1 << 21) | (1 << 23); imx233_pinctrl_set_drive(1, 19, PINCTRL_DRIVE_4mA); /* lcd_rs */ imx233_pinctrl_set_drive(1, 20, PINCTRL_DRIVE_4mA); /* lcd_wr */ imx233_pinctrl_set_drive(1, 21, PINCTRL_DRIVE_4mA); /* lcd_cs */ imx233_pinctrl_set_drive(1, 23, PINCTRL_DRIVE_4mA); /* lcd_enable */ imx233_pinctrl_set_function(1, 19, PINCTRL_FUNCTION_MAIN); /* lcd_rs */ imx233_pinctrl_set_function(1, 20, PINCTRL_FUNCTION_MAIN); /* lcd_wr */ imx233_pinctrl_set_function(1, 21, PINCTRL_FUNCTION_MAIN); /* lcd_cs */ HW_PINCTRL_DOEn_CLR(1) = 0x3ffff; /* lcd_d{0-17} */ HW_PINCTRL_MUXSELn_CLR(2) = 0xffffffff; /* lcd_d{0-15} as lcd_d{0-15} */ imx233_pinctrl_set_function(1, 16, PINCTRL_FUNCTION_MAIN); /* lcd_d16 */ imx233_pinctrl_set_function(1, 17, PINCTRL_FUNCTION_MAIN); /* lcd_d17 */ imx233_pinctrl_set_function(1, 18, PINCTRL_FUNCTION_MAIN); /* lcd_reset */ imx233_pinctrl_set_function(1, 19, PINCTRL_FUNCTION_MAIN); /* lcd_rs */ } } static void common_lcd_enable(bool enable) { imx233_lcdif_enable(enable); setup_lcd_pins(enable); /* use GPIO pins when disable */ } static void setup_lcdif(void) { setup_parameters(); common_lcd_enable(true); imx233_lcdif_enable_bus_master(true); } static inline uint32_t encode_16_to_18(uint32_t a) { return ((a & 0xff) << 1) | (((a >> 8) & 0xff) << 10); } static inline uint32_t decode_18_to_16(uint32_t a) { return ((a >> 1) & 0xff) | ((a >> 2) & 0xff00); } static void setup_lcdif_clock(void) { /* the LCD seems to work at 24Mhz, so use the xtal clock with no divider */ imx233_clkctrl_enable(CLK_PIX, false); imx233_clkctrl_set_div(CLK_PIX, 1); imx233_clkctrl_set_bypass(CLK_PIX, true); /* use XTAL */ imx233_clkctrl_enable(CLK_PIX, true); } static uint32_t i80_read_register(uint32_t data_out) { imx233_lcdif_wait_ready(); /* lcd_enable is mapped to the RD pin of the controller */ imx233_pinctrl_set_gpio(1, 21, true); /* lcd_cs */ imx233_pinctrl_set_gpio(1, 19, true); /* lcd_rs */ imx233_pinctrl_set_gpio(1, 23, true); /* lcd_enable */ imx233_pinctrl_set_gpio(1, 20, true); /* lcd_wr */ HW_PINCTRL_DOEn_SET(1) = 0x3ffff; /* lcd_d{0-17} */ udelay(2); imx233_pinctrl_set_gpio(1, 19, false); /* lcd_rs */ udelay(1); imx233_pinctrl_set_gpio(1, 21, false); /* lcd_cs */ udelay(1); imx233_pinctrl_set_gpio(1, 20, false); /* lcd_wr */ udelay(1); HW_PINCTRL_DOUTn_SET(1) = data_out & 0x3ffff; /* lcd_d{0-17} */ udelay(1); imx233_pinctrl_set_gpio(1, 20, true); /* lcd_wr */ udelay(3); HW_PINCTRL_DOEn_CLR(1) = 0x3ffff; /* lcd_d{0-17} */ udelay(2); imx233_pinctrl_set_gpio(1, 23, false); /* lcd_enable */ udelay(1); imx233_pinctrl_set_gpio(1, 19, true); /* lcd_rs */ udelay(1); imx233_pinctrl_set_gpio(1, 23, true); /* lcd_enable */ udelay(3); imx233_pinctrl_set_gpio(1, 23, false); /* lcd_enable */ udelay(2); uint32_t data_in = HW_PINCTRL_DINn(1) & 0x3ffff; /* lcd_d{0-17} */ udelay(1); imx233_pinctrl_set_gpio(1, 23, true); /* lcd_enable */ udelay(1); imx233_pinctrl_set_gpio(1, 21, true); /* lcd_cs */ udelay(1); return data_in; } static void lcd_write_reg(uint32_t reg, uint32_t data) { uint32_t old_reg = reg; imx233_lcdif_wait_ready(); /* get back to 18-bit word length */ imx233_lcdif_set_word_length(18); reg = encode_16_to_18(reg); data = encode_16_to_18(data); imx233_lcdif_pio_send(false, 1, ®); if(old_reg != 0x22) imx233_lcdif_pio_send(true, 1, &data); } static uint32_t lcd_read_reg(uint32_t reg) { setup_lcd_pins_i80(true); uint32_t data_in = i80_read_register(encode_16_to_18(reg)); setup_lcd_pins_i80(false); lcd_write_reg(0x22, 0); return decode_18_to_16(data_in); } #define REG_MDELAY 0xffffffff struct lcd_sequence_entry_t { uint32_t reg, data; }; static void lcd_send_sequence(struct lcd_sequence_entry_t *seq, unsigned count) { for(;count-- > 0; seq++) { if(seq->reg == REG_MDELAY) mdelay(seq->data); else lcd_write_reg(seq->reg, seq->data); } } #define _begin_seq() static struct lcd_sequence_entry_t __seq[] = { #define _mdelay(a) {REG_MDELAY, a}, #define _lcd_write_reg(a, b) {a, b}, #define _end_seq() }; lcd_send_sequence(__seq, sizeof(__seq) / sizeof(__seq[0])); static void lcd_init_seq_7783(void) { _begin_seq() _mdelay(200) _lcd_write_reg(1, 0x100) _lcd_write_reg(2, 0x700) _lcd_write_reg(3, 0x1030) _lcd_write_reg(7, 0x121) _lcd_write_reg(8, 0x302) _lcd_write_reg(9, 0x200) _lcd_write_reg(0xa, 0) _lcd_write_reg(0x10, 0x790) _lcd_write_reg(0x11, 5) _lcd_write_reg(0x12, 0) _lcd_write_reg(0x13, 0) _mdelay(100) _lcd_write_reg(0x10, 0x12b0) _mdelay(100) _lcd_write_reg(0x11, 7) _mdelay(100) _lcd_write_reg(0x12, 0x89) _lcd_write_reg(0x13, 0x1d00) _lcd_write_reg(0x29, 0x2f) _mdelay(50) _lcd_write_reg(0x30, 0) _lcd_write_reg(0x31, 0x505) _lcd_write_reg(0x32, 0x205) _lcd_write_reg(0x35, 0x206) _lcd_write_reg(0x36, 0x408) _lcd_write_reg(0x37, 0) _lcd_write_reg(0x38, 0x504) _lcd_write_reg(0x39, 0x206) _lcd_write_reg(0x3c, 0x206) _lcd_write_reg(0x3d, 0x408) _lcd_write_reg(0x50, 0) /* left X ? */ _lcd_write_reg(0x51, 0xef) /* right X ? */ _lcd_write_reg(0x52, 0) /* top Y ? */ _lcd_write_reg(0x53, 0x13f) /* bottom Y ? */ _lcd_write_reg(0x20, 0) /* left X ? */ _lcd_write_reg(0x21, 0) /* top Y ? */ _lcd_write_reg(0x60, 0xa700) _lcd_write_reg(0x61, 1) _lcd_write_reg(0x90, 0x33) _lcd_write_reg(0x2b, 0xa) _lcd_write_reg(9, 0) _lcd_write_reg(7, 0x133) _mdelay(50) _lcd_write_reg(0x22, 0) _end_seq() } static void lcd_init_seq_9325(void) { _begin_seq() _lcd_write_reg(0xe5, 0x78f0) _lcd_write_reg(0xe3, 0x3008) _lcd_write_reg(0xe7, 0x12) _lcd_write_reg(0xef, 0x1231) _lcd_write_reg(0, 1) _lcd_write_reg(1, 0x100) _lcd_write_reg(2, 0x700) _lcd_write_reg(3, 0x1030) _lcd_write_reg(4, 0) _lcd_write_reg(8, 0x207) _lcd_write_reg(9, 0) _lcd_write_reg(0xa, 0) _lcd_write_reg(0xc, 0) _lcd_write_reg(0xd, 0) _lcd_write_reg(0xf, 0) _lcd_write_reg(0x10, 0) _lcd_write_reg(0x11, 7) _lcd_write_reg(0x12, 0) _lcd_write_reg(0x13, 0) _mdelay(20) _lcd_write_reg(0x10, 0x1290) _lcd_write_reg(0x11, 7) _mdelay(50) _lcd_write_reg(0x12, 0x19) _mdelay(50) _lcd_write_reg(0x13, 0x1700) _lcd_write_reg(0x29, 0x14) _mdelay(50) _lcd_write_reg(0x20, 0) _lcd_write_reg(0x21, 0) _lcd_write_reg(0x30, 0x504) _lcd_write_reg(0x31, 7) _lcd_write_reg(0x32, 6) _lcd_write_reg(0x35, 0x106) _lcd_write_reg(0x36, 0x202) _lcd_write_reg(0x37, 0x504) _lcd_write_reg(0x38, 0x500) _lcd_write_reg(0x39, 0x706) _lcd_write_reg(0x3c, 0x204) _lcd_write_reg(0x3d, 0x202) _lcd_write_reg(0x50, 0) _lcd_write_reg(0x51, 0xef) _lcd_write_reg(0x52, 0) _lcd_write_reg(0x53, 0x13f) _lcd_write_reg(0x60, 0xa700) _lcd_write_reg(0x61, 1) _lcd_write_reg(0x6a, 0) _lcd_write_reg(0x2b, 0xd) _mdelay(50) _lcd_write_reg(0x90, 0x11) _lcd_write_reg(0x92, 0x600) _lcd_write_reg(0x93, 3) _lcd_write_reg(0x95, 0x110) _lcd_write_reg(0x97, 0) _lcd_write_reg(0x98, 0) _lcd_write_reg(7, 0x173) _lcd_write_reg(0x22, 0) _end_seq() } static void lcd_sync_settings(void) { #ifdef HAVE_LCD_INVERT lcd_write_reg(0x61, lcd_reg_0x61_val); #endif #ifdef HAVE_LCD_FLIP lcd_write_reg(3, lcd_reg_3_val); #endif } void lcd_init_device(void) { lcd_dcp_channel = imx233_dcp_acquire_channel(TIMEOUT_NOBLOCK); if(lcd_dcp_channel < 0) panicf("imx233_framebuffer_init: imx233_dcp_acquire_channel failed!"); setup_lcdif_clock(); setup_lcdif(); for(int i = 0; i < 10; i++) { lcd_kind = lcd_read_reg(0); mdelay(5); if(lcd_kind == LCD_KIND_7783 || lcd_kind == LCD_KIND_9325) break; } // reset device imx233_lcdif_reset_lcd(true); mdelay(50); imx233_lcdif_reset_lcd(false); mdelay(10); imx233_lcdif_reset_lcd(true); switch(lcd_kind) { case LCD_KIND_7783: lcd_init_seq_7783(); break; case LCD_KIND_9325: lcd_init_seq_9325(); break; default: lcd_kind = LCD_KIND_7783; lcd_init_seq_7783(); break; } lcd_sync_settings(); #ifdef HAVE_LCD_ENABLE lcd_on = true; #endif } #ifdef HAVE_LCD_ENABLE bool lcd_active(void) { return lcd_on; } static void lcd_enable_7783(bool enable) { if(!enable) { _begin_seq() _lcd_write_reg(7, 0x131) _mdelay(50) _lcd_write_reg(7, 0x20) _mdelay(50) _lcd_write_reg(0x10, 0x82) _mdelay(50) _end_seq() } else { _begin_seq() _lcd_write_reg(0x11, 5) _lcd_write_reg(0x10, 0x12b0) _mdelay(50) _lcd_write_reg(7, 0x11) _mdelay(50) _lcd_write_reg(0x12, 0x89) _mdelay(50) _lcd_write_reg(0x13, 0x1d00) _mdelay(50) _lcd_write_reg(0x29, 0x2f) _mdelay(50) _lcd_write_reg(0x2b, 0xa) _lcd_write_reg(7, 0x133) _mdelay(50) _lcd_write_reg(0x22, 0) _end_seq() } } static void lcd_enable_9325(bool enable) { if(!enable) { _begin_seq() _lcd_write_reg(7, 0x131) _mdelay(10) _lcd_write_reg(7, 0x130) _mdelay(10) _lcd_write_reg(7, 0) _lcd_write_reg(0x10, 0x80) _lcd_write_reg(0x11, 0) _lcd_write_reg(0x12, 0) _lcd_write_reg(0x13, 0) _mdelay(200) _lcd_write_reg(0x10, 0x82) _end_seq() } else { _begin_seq() _lcd_write_reg(0x10, 0x80) _lcd_write_reg(0x11, 0) _lcd_write_reg(0x12, 0) _lcd_write_reg(0x13, 0) _lcd_write_reg(7, 1) _mdelay(200) _lcd_write_reg(0x10, 0x1290) _lcd_write_reg(0x11, 7) _mdelay(50) _lcd_write_reg(0x12, 0x19) _mdelay(50) _lcd_write_reg(0x13, 0x1700) _lcd_write_reg(0x29, 0x10) _mdelay(50) _lcd_write_reg(7, 0x133) _lcd_write_reg(0x22, 0) _end_seq() } } void lcd_enable(bool enable) { if(lcd_on == enable) return; lcd_on = enable; if(enable) common_lcd_enable(true); switch(lcd_kind) { case LCD_KIND_7783: lcd_enable_7783(enable); break; case LCD_KIND_9325: lcd_enable_9325(enable); break; } if(!enable) common_lcd_enable(false); else { lcd_sync_settings(); send_event(LCD_EVENT_ACTIVATION, NULL); } } #endif #ifdef HAVE_LCD_INVERT void lcd_set_invert_display(bool yesno) { lcd_reg_0x61_val = yesno ? 0 : 1; #ifdef HAVE_LCD_ENABLE if(!lcd_on) return; #endif /* same for both kinds */ lcd_write_reg(0x61, lcd_reg_0x61_val); } #endif #ifdef HAVE_LCD_FLIP void lcd_set_flip(bool yesno) { lcd_reg_3_val = yesno ? 0x1080 : 0x1030; #ifdef HAVE_LCD_ENABLE if(!lcd_on) return; #endif /* same for both kinds */ lcd_write_reg(3, lcd_reg_3_val); } #endif void lcd_update(void) { lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT); } void lcd_update_rect(int x, int y, int w, int h) { #ifdef HAVE_LCD_ENABLE if(!lcd_on) return; #endif /* make sure the rectangle is bounded in the screen */ if (w > LCD_WIDTH - x)/* Clip right */ w = LCD_WIDTH - x; if (x < 0)/* Clip left */ { w += x; x = 0; } if (w <= 0) return; /* nothing left to do */ if (h > LCD_HEIGHT - y) /* Clip bottom */ h = LCD_HEIGHT - y; if (y < 0) /* Clip top */ { h += y; y = 0; } if (h <= 0) return; /* nothing left to do */ imx233_lcdif_wait_ready(); #ifdef HAVE_LCD_FLIP if(!(lcd_reg_3_val&0x10)) { int xr = LCD_WIDTH - x; lcd_write_reg(0x50, xr-w); lcd_write_reg(0x51, xr-1); lcd_write_reg(0x20, xr-w); }else #endif { lcd_write_reg(0x50, x); lcd_write_reg(0x51, x + w - 1); lcd_write_reg(0x20, x); } #ifdef HAVE_LCD_FLIP if(!(lcd_reg_3_val&0x20)) { int yr = LCD_HEIGHT - y; lcd_write_reg(0x52, yr-h); lcd_write_reg(0x53, yr-1); lcd_write_reg(0x21, yr-h); }else #endif { lcd_write_reg(0x52, y); lcd_write_reg(0x53, y + h - 1); lcd_write_reg(0x21, y); } lcd_write_reg(0x22, 0); imx233_lcdif_wait_ready(); imx233_lcdif_set_word_length(16); imx233_lcdif_set_byte_packing_format(0xf); /* two pixels per 32-bit word */ /* there are two cases here: * - either width = LCD_WIDTH and we can directly memcopy a part of lcd_framebuffer to FRAME * and send it * - either width != LCD_WIDTH and we have to build a contiguous copy of the rectangular area * into FRAME before sending it (which is slower and doesn't use the hardware) * In all cases, FRAME just acts as a temporary buffer. * NOTE It's more interesting to do a copy to FRAME in all cases since in system mode * the clock runs at 24MHz which provides barely 10MB/s bandwidth compared to >100MB/s * for memcopy operations */ if(w == LCD_WIDTH) { memcpy((void *)FRAME, FBADDR(x,y), w * h * sizeof(fb_data)); } else { void* (*fbaddr)(int x, int y) = FB_CURRENTVP_BUFFER->get_address_fn; for(int i = 0; i < h; i++) memcpy((fb_data *)FRAME + i * w, fbaddr(x,y + i), w * sizeof(fb_data)); } /* WARNING The LCDIF has a limitation on the vertical count ! In 16-bit packed mode * (which we used, ie 16-bit per pixel, 2 pixels per 32-bit words), the v_count * field must be a multiple of 2. Furthermore, it seems the lcd controller doesn't * really like when both w and h are even, probably because the writes to the GRAM * are done on several words and the controller requires dummy writes. * The workaround is to always make sure that we send a number of pixels which is * a multiple of 4 so that both the lcdif and the controller are happy. If any * of w or h is odd, we will send a copy of the first pixels as dummy writes. We will * send at most 3 bytes. We then send (w * h + 3) / 4 x 4 bytes. */ if(w % 4 || (h & 1) == 1) { /* copy three pixel after the last one */ for(int i = 0; i < 3; i++) *((fb_data *)FRAME + w * h + i) = *((fb_data *)FRAME + i); /* WARNING we need to update w and h to reflect the pixel count BUT it * has no relation to w * h (it can even be 2 * prime). Hopefully, w <= 240 and * h <= 320 so w * h <= 76800 and (w * h + 3) / 4 <= 38400 which fits into * a 16-bit integer (horizontal count). */ h = (w * h + 3) / 4; w = 4; } imx233_lcdif_dma_send((void *)FRAME_PHYS_ADDR, w, h); } #ifndef BOOTLOADER bool lcd_debug_screen(void) { lcd_setfont(FONT_SYSFIXED); while(1) { int button = get_action(CONTEXT_STD, HZ / 10); switch(button) { case ACTION_STD_NEXT: case ACTION_STD_PREV: case ACTION_STD_OK: case ACTION_STD_MENU: lcd_setfont(FONT_UI); return true; case ACTION_STD_CANCEL: lcd_setfont(FONT_UI); return false; } lcd_clear_display(); lcd_putsf(0, 0, "lcd kind: %s", lcd_kind == LCD_KIND_7783 ? "st7783" : lcd_kind == LCD_KIND_9325 ? "ili9325" : "unknown"); lcd_update(); yield(); } return true; } #endif