/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * $Id: lcd-nano2g.c 28868 2010-12-21 06:59:17Z Buschel $ * * Copyright (C) 2009 by Dave Chapman * * 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 "hwcompat.h" #include "kernel.h" #include "lcd.h" #include "system.h" #include "cpu.h" #include "pmu-target.h" #include "power.h" #include "string.h" #include "dma-s5l8702.h" #define R_HORIZ_GRAM_ADDR_SET 0x200 #define R_VERT_GRAM_ADDR_SET 0x201 #define R_WRITE_DATA_TO_GRAM 0x202 #define R_HORIZ_ADDR_START_POS 0x210 #define R_HORIZ_ADDR_END_POS 0x211 #define R_VERT_ADDR_START_POS 0x212 #define R_VERT_ADDR_END_POS 0x213 /* LCD type 1 register defines */ #define R_COLUMN_ADDR_SET 0x2a #define R_ROW_ADDR_SET 0x2b #define R_MEMORY_WRITE 0x2c /** globals **/ int lcd_type; /* also needed in debug-s5l8702.c */ static struct mutex lcd_mutex; static uint16_t lcd_dblbuf[LCD_HEIGHT][LCD_WIDTH] CACHEALIGN_ATTR; static bool lcd_ispowered; #define SLEEP 0 #define CMD16 1 #define DATA16 2 #define REG15 3 #define END 0xff /* powersave sequences */ static const unsigned short lcd_sleep_sequence_01[] = { CMD16, 0x028, /* Display Off */ SLEEP, 0x005, /* 50 ms */ CMD16, 0x010, /* Sleep In Mode */ SLEEP, 0x005, /* 50 ms */ END }; static const unsigned short lcd_deep_stby_sequence_23[] = { /* Display Off */ REG15, 0x007, 0x0172, REG15, 0x030, 0x03ff, SLEEP, 0x00a, REG15, 0x007, 0x0120, REG15, 0x030, 0x0000, REG15, 0x100, 0x0780, REG15, 0x007, 0x0000, REG15, 0x101, 0x0260, REG15, 0x102, 0x00a9, SLEEP, 0x003, REG15, 0x100, 0x0700, /* Deep Standby Mode */ REG15, 0x100, 0x0704, SLEEP, 0x005, END }; #ifdef HAVE_LCD_SLEEP /* init sequences */ static const unsigned short lcd_init_sequence_01[] = { CMD16, 0x011, /* Sleep Out Mode */ SLEEP, 0x006, /* 60 ms */ CMD16, 0x029, /* Display On */ END }; static const unsigned short lcd_init_sequence_23[] = { /* Display settings */ REG15, 0x008, 0x0808, REG15, 0x010, 0x0013, REG15, 0x011, 0x0300, REG15, 0x012, 0x0101, REG15, 0x013, 0x0a03, REG15, 0x014, 0x0a0e, REG15, 0x015, 0x0a19, REG15, 0x016, 0x2402, REG15, 0x018, 0x0001, REG15, 0x090, 0x0021, /* Gamma settings */ REG15, 0x300, 0x0307, REG15, 0x301, 0x0003, REG15, 0x302, 0x0402, REG15, 0x303, 0x0303, REG15, 0x304, 0x0300, REG15, 0x305, 0x0407, REG15, 0x306, 0x1c04, REG15, 0x307, 0x0307, REG15, 0x308, 0x0003, REG15, 0x309, 0x0402, REG15, 0x30a, 0x0303, REG15, 0x30b, 0x0300, REG15, 0x30c, 0x0407, REG15, 0x30d, 0x1c04, REG15, 0x310, 0x0707, REG15, 0x311, 0x0407, REG15, 0x312, 0x0306, REG15, 0x313, 0x0303, REG15, 0x314, 0x0300, REG15, 0x315, 0x0407, REG15, 0x316, 0x1c01, REG15, 0x317, 0x0707, REG15, 0x318, 0x0407, REG15, 0x319, 0x0306, REG15, 0x31a, 0x0303, REG15, 0x31b, 0x0300, REG15, 0x31c, 0x0407, REG15, 0x31d, 0x1c01, REG15, 0x320, 0x0206, REG15, 0x321, 0x0102, REG15, 0x322, 0x0404, REG15, 0x323, 0x0303, REG15, 0x324, 0x0300, REG15, 0x325, 0x0407, REG15, 0x326, 0x1c1f, REG15, 0x327, 0x0206, REG15, 0x328, 0x0102, REG15, 0x329, 0x0404, REG15, 0x32a, 0x0303, REG15, 0x32b, 0x0300, REG15, 0x32c, 0x0407, REG15, 0x32d, 0x1c1f, /* GRAM and Base Imagen settings (ili9326ds) */ REG15, 0x400, 0x001d, REG15, 0x401, 0x0001, REG15, 0x205, 0x0060, /* Power settings */ REG15, 0x007, 0x0001, REG15, 0x031, 0x0071, REG15, 0x110, 0x0001, REG15, 0x100, 0x17b0, REG15, 0x101, 0x0220, REG15, 0x102, 0x00bd, REG15, 0x103, 0x1500, REG15, 0x105, 0x0103, REG15, 0x106, 0x0105, /* Display On */ REG15, 0x007, 0x0021, REG15, 0x001, 0x0110, REG15, 0x003, 0x0230, REG15, 0x002, 0x0500, REG15, 0x007, 0x0031, REG15, 0x030, 0x0007, SLEEP, 0x003, REG15, 0x030, 0x03ff, SLEEP, 0x006, REG15, 0x007, 0x0072, SLEEP, 0x00f, REG15, 0x007, 0x0173, END }; #endif /* DMA configuration */ /* one single transfer at once, needed LLIs: * screen_size / (DMAC_LLI_MAX_COUNT << swidth) = * (320*240*2) / (4095*2) = 19 */ #define LCD_DMA_TSKBUF_SZ 1 /* N tasks, MUST be pow2 */ #define LCD_DMA_LLIBUF_SZ 32 /* N LLIs, MUST be pow2 */ static struct dmac_tsk lcd_dma_tskbuf[LCD_DMA_TSKBUF_SZ]; static struct dmac_lli volatile \ lcd_dma_llibuf[LCD_DMA_LLIBUF_SZ] CACHEALIGN_ATTR; static struct dmac_ch lcd_dma_ch = { .dmac = &s5l8702_dmac0, .prio = DMAC_CH_PRIO(4), .cb_fn = NULL, .tskbuf = lcd_dma_tskbuf, .tskbuf_mask = LCD_DMA_TSKBUF_SZ - 1, .queue_mode = QUEUE_NORMAL, .llibuf = lcd_dma_llibuf, .llibuf_mask = LCD_DMA_LLIBUF_SZ - 1, .llibuf_bus = DMAC_MASTER_AHB1, }; static struct dmac_ch_cfg lcd_dma_ch_cfg = { .srcperi = S5L8702_DMAC0_PERI_MEM, .dstperi = S5L8702_DMAC0_PERI_LCD_WR, .sbsize = DMACCxCONTROL_BSIZE_1, .dbsize = DMACCxCONTROL_BSIZE_1, .swidth = DMACCxCONTROL_WIDTH_16, .dwidth = DMACCxCONTROL_WIDTH_16, .sbus = DMAC_MASTER_AHB1, .dbus = DMAC_MASTER_AHB1, .sinc = DMACCxCONTROL_INC_ENABLE, .dinc = DMACCxCONTROL_INC_DISABLE, .prot = DMAC_PROT_CACH | DMAC_PROT_BUFF | DMAC_PROT_PRIV, .lli_xfer_max_count = DMAC_LLI_MAX_COUNT, }; static inline void s5l_lcd_write_reg(int cmd, unsigned int data) { while (LCD_STATUS & 0x10); LCD_WCMD = cmd; while (LCD_STATUS & 0x10); /* 16-bit/1-transfer data format (ili9320ds s7.2.2) */ LCD_WDATA = (data & 0x78ff) | ((data & 0x0300) << 1) | ((data & 0x0400) << 5); } static inline void s5l_lcd_write_cmd(unsigned short cmd) { while (LCD_STATUS & 0x10); LCD_WCMD = cmd; } static inline void s5l_lcd_write_data(unsigned short data) { while (LCD_STATUS & 0x10); LCD_WDATA = data; } static void lcd_run_sequence(const unsigned short *seq) { unsigned short tmp; while (1) switch (*seq++) { case SLEEP: sleep(*seq++); break; case CMD16: s5l_lcd_write_cmd(*seq++); break; case DATA16: s5l_lcd_write_data(*seq++); break; case REG15: tmp = *seq++; /* avoid compiler warning */ s5l_lcd_write_reg(tmp, *seq++); break; case END: default: /* bye */ return; } } /*** hardware configuration ***/ int lcd_default_contrast(void) { return 0x1f; } void lcd_set_contrast(int val) { (void)val; } void lcd_set_invert_display(bool yesno) { (void)yesno; } void lcd_set_flip(bool yesno) { (void)yesno; } bool lcd_active(void) { return lcd_ispowered; } void lcd_shutdown(void) { pmu_write(0x2b, 0); /* Kill the backlight, instantly. */ pmu_write(0x29, 0); lcd_sleep(); } void lcd_sleep(void) { mutex_lock(&lcd_mutex); lcd_run_sequence((lcd_type & 2) ? lcd_deep_stby_sequence_23 : lcd_sleep_sequence_01); /* mask lcd controller clock gate */ PWRCON(0) |= (1 << 1); lcd_ispowered = false; mutex_unlock(&lcd_mutex); } #ifdef HAVE_LCD_SLEEP void lcd_awake(void) { mutex_lock(&lcd_mutex); /* unmask lcd controller clock gate */ PWRCON(0) &= ~(1 << 1); if (lcd_type & 2) { /* release from deep standby mode (ili9320ds s12.3) */ for (int i = 0; i < 6; i++) { s5l_lcd_write_cmd(0x000); udelay(1000); } lcd_run_sequence(lcd_init_sequence_23); } else lcd_run_sequence(lcd_init_sequence_01); lcd_ispowered = true; mutex_unlock(&lcd_mutex); send_event(LCD_EVENT_ACTIVATION, NULL); } #endif /* LCD init */ void lcd_init_device(void) { /* Detect lcd type */ mutex_init(&lcd_mutex); lcd_type = (PDAT6 & 0x30) >> 4; while (!(LCD_STATUS & 0x2)); LCD_CONFIG = 0x80100db0; /* Configure DMA channel */ dmac_ch_init(&lcd_dma_ch, &lcd_dma_ch_cfg); lcd_ispowered = true; } /*** Update functions ***/ static inline void lcd_write_pixel(fb_data pixel) { mutex_lock(&lcd_mutex); LCD_WDATA = pixel; mutex_unlock(&lcd_mutex); } /* Update the display. This must be called after all other LCD functions that change the display. */ void lcd_update(void) ICODE_ATTR; void lcd_update(void) { lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT); } /* Line write helper function. */ extern void lcd_write_line(const fb_data *addr, int pixelcount, const unsigned int lcd_base_addr); static void displaylcd_setup(int x, int y, int width, int height) ICODE_ATTR; static void displaylcd_setup(int x, int y, int width, int height) { /* TODO: ISR()->panicf()->lcd_update() blocks forever */ mutex_lock(&lcd_mutex); while (dmac_ch_running(&lcd_dma_ch)) yield(); int xe = (x + width) - 1; /* max horiz */ int ye = (y + height) - 1; /* max vert */ if (lcd_type & 2) { s5l_lcd_write_reg(R_HORIZ_ADDR_START_POS, x); s5l_lcd_write_reg(R_HORIZ_ADDR_END_POS, xe); s5l_lcd_write_reg(R_VERT_ADDR_START_POS, y); s5l_lcd_write_reg(R_VERT_ADDR_END_POS, ye); s5l_lcd_write_reg(R_HORIZ_GRAM_ADDR_SET, x); s5l_lcd_write_reg(R_VERT_GRAM_ADDR_SET, y); s5l_lcd_write_cmd(R_WRITE_DATA_TO_GRAM); } else { s5l_lcd_write_cmd(R_COLUMN_ADDR_SET); s5l_lcd_write_data(x >> 8); s5l_lcd_write_data(x & 0xff); s5l_lcd_write_data(xe >> 8); s5l_lcd_write_data(xe & 0xff); s5l_lcd_write_cmd(R_ROW_ADDR_SET); s5l_lcd_write_data(y >> 8); s5l_lcd_write_data(y & 0xff); s5l_lcd_write_data(ye >> 8); s5l_lcd_write_data(ye & 0xff); s5l_lcd_write_cmd(R_MEMORY_WRITE); } } static void displaylcd_dma(int pixels) ICODE_ATTR; static void displaylcd_dma(int pixels) { commit_dcache(); dmac_ch_queue(&lcd_dma_ch, lcd_dblbuf, (void*)S5L8702_DADDR_PERI_LCD_WR, pixels*2, NULL); mutex_unlock(&lcd_mutex); } /* Update a fraction of the display. */ void lcd_update_rect(int, int, int, int) ICODE_ATTR; void lcd_update_rect(int x, int y, int width, int height) { int pixels = width * height; fb_data* p = FBADDR(x,y); uint16_t* out = lcd_dblbuf[0]; #ifdef HAVE_LCD_SLEEP if (!lcd_active()) return; #endif displaylcd_setup(x, y, width, height); /* Copy display bitmap to hardware */ if (LCD_WIDTH == width) { /* Write all lines at once */ memcpy(out, p, pixels * 2); } else { do { /* Write a single line */ memcpy(out, p, width * 2); p += LCD_WIDTH; out += width; } while (--height); } displaylcd_dma(pixels); } /* Line write helper function for lcd_yuv_blit. Writes two lines of yuv420. */ extern void lcd_write_yuv420_lines(unsigned char const * const src[3], uint16_t* outbuf, int width, int stride); /* 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) ICODE_ATTR; 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) { unsigned int z; unsigned char const * yuv_src[3]; #ifdef HAVE_LCD_SLEEP if (!lcd_active()) return; #endif width = (width + 1) & ~1; /* ensure width is even */ int pixels = width * height; uint16_t* out = lcd_dblbuf[0]; z = stride * src_y; yuv_src[0] = src[0] + z + src_x; yuv_src[1] = src[1] + (z >> 2) + (src_x >> 1); yuv_src[2] = src[2] + (yuv_src[1] - src[1]); displaylcd_setup(x, y, width, height); height >>= 1; do { lcd_write_yuv420_lines(yuv_src, out, width, stride); yuv_src[0] += stride << 1; yuv_src[1] += stride >> 1; /* Skip down one chroma line */ yuv_src[2] += stride >> 1; out += width << 1; } while (--height); displaylcd_dma(pixels); }