/* * Porting to u-boot: * * (C) Copyright 2011 * Stefano Babic, DENX Software Engineering, sbabic@denx.de. * * Copyright (C) 2008-2009 MontaVista Software Inc. * Copyright (C) 2008-2009 Texas Instruments Inc * * Based on the LCD driver for TI Avalanche processors written by * Ajay Singh and Shalom Hai. * * 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 #include #include #include #include #include #include #include #include "videomodes.h" #include #define DRIVER_NAME "da8xx_lcdc" /* LCD Status Register */ #define LCD_END_OF_FRAME1 (1 << 9) #define LCD_END_OF_FRAME0 (1 << 8) #define LCD_PL_LOAD_DONE (1 << 6) #define LCD_FIFO_UNDERFLOW (1 << 5) #define LCD_SYNC_LOST (1 << 2) /* LCD DMA Control Register */ #define LCD_DMA_BURST_SIZE(x) ((x) << 4) #define LCD_DMA_BURST_1 0x0 #define LCD_DMA_BURST_2 0x1 #define LCD_DMA_BURST_4 0x2 #define LCD_DMA_BURST_8 0x3 #define LCD_DMA_BURST_16 0x4 #define LCD_END_OF_FRAME_INT_ENA (1 << 2) #define LCD_DUAL_FRAME_BUFFER_ENABLE (1 << 0) /* LCD Control Register */ #define LCD_CLK_DIVISOR(x) ((x) << 8) #define LCD_RASTER_MODE 0x01 /* LCD Raster Control Register */ #define LCD_PALETTE_LOAD_MODE(x) ((x) << 20) #define PALETTE_AND_DATA 0x00 #define PALETTE_ONLY 0x01 #define DATA_ONLY 0x02 #define LCD_MONO_8BIT_MODE (1 << 9) #define LCD_RASTER_ORDER (1 << 8) #define LCD_TFT_MODE (1 << 7) #define LCD_UNDERFLOW_INT_ENA (1 << 6) #define LCD_PL_ENABLE (1 << 4) #define LCD_MONOCHROME_MODE (1 << 1) #define LCD_RASTER_ENABLE (1 << 0) #define LCD_TFT_ALT_ENABLE (1 << 23) #define LCD_STN_565_ENABLE (1 << 24) /* LCD Raster Timing 2 Register */ #define LCD_AC_BIAS_TRANSITIONS_PER_INT(x) ((x) << 16) #define LCD_AC_BIAS_FREQUENCY(x) ((x) << 8) #define LCD_SYNC_CTRL (1 << 25) #define LCD_SYNC_EDGE (1 << 24) #define LCD_INVERT_PIXEL_CLOCK (1 << 22) #define LCD_INVERT_LINE_CLOCK (1 << 21) #define LCD_INVERT_FRAME_CLOCK (1 << 20) /* LCD Block */ struct da8xx_lcd_regs { u32 revid; u32 ctrl; u32 stat; u32 lidd_ctrl; u32 lidd_cs0_conf; u32 lidd_cs0_addr; u32 lidd_cs0_data; u32 lidd_cs1_conf; u32 lidd_cs1_addr; u32 lidd_cs1_data; u32 raster_ctrl; u32 raster_timing_0; u32 raster_timing_1; u32 raster_timing_2; u32 raster_subpanel; u32 reserved; u32 dma_ctrl; u32 dma_frm_buf_base_addr_0; u32 dma_frm_buf_ceiling_addr_0; u32 dma_frm_buf_base_addr_1; u32 dma_frm_buf_ceiling_addr_1; }; #define LCD_NUM_BUFFERS 1 #define WSI_TIMEOUT 50 #define PALETTE_SIZE 256 #define LEFT_MARGIN 64 #define RIGHT_MARGIN 64 #define UPPER_MARGIN 32 #define LOWER_MARGIN 32 #define calc_fbsize() (panel.plnSizeX * panel.plnSizeY * panel.gdfBytesPP) #define mdelay(n) ({unsigned long msec = (n); while (msec--) udelay(1000); }) static struct da8xx_lcd_regs *da8xx_fb_reg_base; DECLARE_GLOBAL_DATA_PTR; /* graphics setup */ static GraphicDevice gpanel; static const struct da8xx_panel *lcd_panel; static struct fb_info *da8xx_fb_info; static int bits_x_pixel; static inline unsigned int lcdc_read(u32 *addr) { return (unsigned int)readl(addr); } static inline void lcdc_write(unsigned int val, u32 *addr) { writel(val, addr); } struct da8xx_fb_par { u32 p_palette_base; unsigned char *v_palette_base; dma_addr_t vram_phys; unsigned long vram_size; void *vram_virt; unsigned int dma_start; unsigned int dma_end; struct clk *lcdc_clk; int irq; unsigned short pseudo_palette[16]; unsigned int palette_sz; unsigned int pxl_clk; int blank; int vsync_flag; int vsync_timeout; }; /* Variable Screen Information */ static struct fb_var_screeninfo da8xx_fb_var = { .xoffset = 0, .yoffset = 0, .transp = {0, 0, 0}, .nonstd = 0, .activate = 0, .height = -1, .width = -1, .pixclock = 46666, /* 46us - AUO display */ .accel_flags = 0, .left_margin = LEFT_MARGIN, .right_margin = RIGHT_MARGIN, .upper_margin = UPPER_MARGIN, .lower_margin = LOWER_MARGIN, .sync = 0, .vmode = FB_VMODE_NONINTERLACED }; static struct fb_fix_screeninfo da8xx_fb_fix = { .id = "DA8xx FB Drv", .type = FB_TYPE_PACKED_PIXELS, .type_aux = 0, .visual = FB_VISUAL_PSEUDOCOLOR, .xpanstep = 0, .ypanstep = 1, .ywrapstep = 0, .accel = FB_ACCEL_NONE }; static const struct display_panel disp_panel = { QVGA, 16, 16, COLOR_ACTIVE, }; static const struct lcd_ctrl_config lcd_cfg = { &disp_panel, .ac_bias = 255, .ac_bias_intrpt = 0, .dma_burst_sz = 16, .bpp = 16, .fdd = 255, .tft_alt_mode = 0, .stn_565_mode = 0, .mono_8bit_mode = 0, .invert_line_clock = 1, .invert_frm_clock = 1, .sync_edge = 0, .sync_ctrl = 1, .raster_order = 0, }; /* Enable the Raster Engine of the LCD Controller */ static inline void lcd_enable_raster(void) { u32 reg; reg = lcdc_read(&da8xx_fb_reg_base->raster_ctrl); if (!(reg & LCD_RASTER_ENABLE)) lcdc_write(reg | LCD_RASTER_ENABLE, &da8xx_fb_reg_base->raster_ctrl); } /* Disable the Raster Engine of the LCD Controller */ static inline void lcd_disable_raster(void) { u32 reg; reg = lcdc_read(&da8xx_fb_reg_base->raster_ctrl); if (reg & LCD_RASTER_ENABLE) lcdc_write(reg & ~LCD_RASTER_ENABLE, &da8xx_fb_reg_base->raster_ctrl); } static void lcd_blit(int load_mode, struct da8xx_fb_par *par) { u32 start; u32 end; u32 reg_ras; u32 reg_dma; /* init reg to clear PLM (loading mode) fields */ reg_ras = lcdc_read(&da8xx_fb_reg_base->raster_ctrl); reg_ras &= ~(3 << 20); reg_dma = lcdc_read(&da8xx_fb_reg_base->dma_ctrl); if (load_mode == LOAD_DATA) { start = par->dma_start; end = par->dma_end; reg_ras |= LCD_PALETTE_LOAD_MODE(DATA_ONLY); reg_dma |= LCD_END_OF_FRAME_INT_ENA; #if (LCD_NUM_BUFFERS == 2) reg_dma |= LCD_DUAL_FRAME_BUFFER_ENABLE; lcdc_write(start, &da8xx_fb_reg_base->dma_frm_buf_base_addr_0); lcdc_write(end, &da8xx_fb_reg_base->dma_frm_buf_ceiling_addr_0); lcdc_write(start, &da8xx_fb_reg_base->dma_frm_buf_base_addr_1); lcdc_write(end, &da8xx_fb_reg_base->dma_frm_buf_ceiling_addr_1); #else reg_dma &= ~LCD_DUAL_FRAME_BUFFER_ENABLE; lcdc_write(start, &da8xx_fb_reg_base->dma_frm_buf_base_addr_0); lcdc_write(end, &da8xx_fb_reg_base->dma_frm_buf_ceiling_addr_0); lcdc_write(0, &da8xx_fb_reg_base->dma_frm_buf_base_addr_1); lcdc_write(0, &da8xx_fb_reg_base->dma_frm_buf_ceiling_addr_1); #endif } else if (load_mode == LOAD_PALETTE) { start = par->p_palette_base; end = start + par->palette_sz - 1; reg_ras |= LCD_PALETTE_LOAD_MODE(PALETTE_ONLY); reg_ras |= LCD_PL_ENABLE; lcdc_write(start, &da8xx_fb_reg_base->dma_frm_buf_base_addr_0); lcdc_write(end, &da8xx_fb_reg_base->dma_frm_buf_ceiling_addr_0); } lcdc_write(reg_dma, &da8xx_fb_reg_base->dma_ctrl); lcdc_write(reg_ras, &da8xx_fb_reg_base->raster_ctrl); /* * The Raster enable bit must be set after all other control fields are * set. */ lcd_enable_raster(); } /* Configure the Burst Size of DMA */ static int lcd_cfg_dma(int burst_size) { u32 reg; reg = lcdc_read(&da8xx_fb_reg_base->dma_ctrl) & 0x00000001; switch (burst_size) { case 1: reg |= LCD_DMA_BURST_SIZE(LCD_DMA_BURST_1); break; case 2: reg |= LCD_DMA_BURST_SIZE(LCD_DMA_BURST_2); break; case 4: reg |= LCD_DMA_BURST_SIZE(LCD_DMA_BURST_4); break; case 8: reg |= LCD_DMA_BURST_SIZE(LCD_DMA_BURST_8); break; case 16: reg |= LCD_DMA_BURST_SIZE(LCD_DMA_BURST_16); break; default: return -EINVAL; } lcdc_write(reg, &da8xx_fb_reg_base->dma_ctrl); return 0; } static void lcd_cfg_ac_bias(int period, int transitions_per_int) { u32 reg; /* Set the AC Bias Period and Number of Transisitons per Interrupt */ reg = lcdc_read(&da8xx_fb_reg_base->raster_timing_2) & 0xFFF00000; reg |= LCD_AC_BIAS_FREQUENCY(period) | LCD_AC_BIAS_TRANSITIONS_PER_INT(transitions_per_int); lcdc_write(reg, &da8xx_fb_reg_base->raster_timing_2); } static void lcd_cfg_horizontal_sync(int back_porch, int pulse_width, int front_porch) { u32 reg; reg = lcdc_read(&da8xx_fb_reg_base->raster_timing_0) & 0xf; reg |= ((back_porch & 0xff) << 24) | ((front_porch & 0xff) << 16) | ((pulse_width & 0x3f) << 10); lcdc_write(reg, &da8xx_fb_reg_base->raster_timing_0); } static void lcd_cfg_vertical_sync(int back_porch, int pulse_width, int front_porch) { u32 reg; reg = lcdc_read(&da8xx_fb_reg_base->raster_timing_1) & 0x3ff; reg |= ((back_porch & 0xff) << 24) | ((front_porch & 0xff) << 16) | ((pulse_width & 0x3f) << 10); lcdc_write(reg, &da8xx_fb_reg_base->raster_timing_1); } static int lcd_cfg_display(const struct lcd_ctrl_config *cfg) { u32 reg; reg = lcdc_read(&da8xx_fb_reg_base->raster_ctrl) & ~(LCD_TFT_MODE | LCD_MONO_8BIT_MODE | LCD_MONOCHROME_MODE); switch (cfg->p_disp_panel->panel_shade) { case MONOCHROME: reg |= LCD_MONOCHROME_MODE; if (cfg->mono_8bit_mode) reg |= LCD_MONO_8BIT_MODE; break; case COLOR_ACTIVE: reg |= LCD_TFT_MODE; if (cfg->tft_alt_mode) reg |= LCD_TFT_ALT_ENABLE; break; case COLOR_PASSIVE: if (cfg->stn_565_mode) reg |= LCD_STN_565_ENABLE; break; default: return -EINVAL; } /* enable additional interrupts here */ reg |= LCD_UNDERFLOW_INT_ENA; lcdc_write(reg, &da8xx_fb_reg_base->raster_ctrl); reg = lcdc_read(&da8xx_fb_reg_base->raster_timing_2); if (cfg->sync_ctrl) reg |= LCD_SYNC_CTRL; else reg &= ~LCD_SYNC_CTRL; if (cfg->sync_edge) reg |= LCD_SYNC_EDGE; else reg &= ~LCD_SYNC_EDGE; if (cfg->invert_line_clock) reg |= LCD_INVERT_LINE_CLOCK; else reg &= ~LCD_INVERT_LINE_CLOCK; if (cfg->invert_frm_clock) reg |= LCD_INVERT_FRAME_CLOCK; else reg &= ~LCD_INVERT_FRAME_CLOCK; lcdc_write(reg, &da8xx_fb_reg_base->raster_timing_2); return 0; } static int lcd_cfg_frame_buffer(struct da8xx_fb_par *par, u32 width, u32 height, u32 bpp, u32 raster_order) { u32 reg; /* Set the Panel Width */ /* Pixels per line = (PPL + 1)*16 */ /*0x3F in bits 4..9 gives max horisontal resolution = 1024 pixels*/ width &= 0x3f0; reg = lcdc_read(&da8xx_fb_reg_base->raster_timing_0); reg &= 0xfffffc00; reg |= ((width >> 4) - 1) << 4; lcdc_write(reg, &da8xx_fb_reg_base->raster_timing_0); /* Set the Panel Height */ reg = lcdc_read(&da8xx_fb_reg_base->raster_timing_1); reg = ((height - 1) & 0x3ff) | (reg & 0xfffffc00); lcdc_write(reg, &da8xx_fb_reg_base->raster_timing_1); /* Set the Raster Order of the Frame Buffer */ reg = lcdc_read(&da8xx_fb_reg_base->raster_ctrl) & ~(1 << 8); if (raster_order) reg |= LCD_RASTER_ORDER; lcdc_write(reg, &da8xx_fb_reg_base->raster_ctrl); switch (bpp) { case 1: case 2: case 4: case 16: par->palette_sz = 16 * 2; break; case 8: par->palette_sz = 256 * 2; break; default: return -EINVAL; } return 0; } static int fb_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp, struct fb_info *info) { struct da8xx_fb_par *par = info->par; unsigned short *palette = (unsigned short *) par->v_palette_base; u_short pal; int update_hw = 0; if (regno > 255) return 1; if (info->fix.visual == FB_VISUAL_DIRECTCOLOR) return 1; if (info->var.bits_per_pixel == 8) { red >>= 4; green >>= 8; blue >>= 12; pal = (red & 0x0f00); pal |= (green & 0x00f0); pal |= (blue & 0x000f); if (palette[regno] != pal) { update_hw = 1; palette[regno] = pal; } } else if ((info->var.bits_per_pixel == 16) && regno < 16) { red >>= (16 - info->var.red.length); red <<= info->var.red.offset; green >>= (16 - info->var.green.length); green <<= info->var.green.offset; blue >>= (16 - info->var.blue.length); blue <<= info->var.blue.offset; par->pseudo_palette[regno] = red | green | blue; if (palette[0] != 0x4000) { update_hw = 1; palette[0] = 0x4000; } } /* Update the palette in the h/w as needed. */ if (update_hw) lcd_blit(LOAD_PALETTE, par); return 0; } static void lcd_reset(struct da8xx_fb_par *par) { /* Disable the Raster if previously Enabled */ lcd_disable_raster(); /* DMA has to be disabled */ lcdc_write(0, &da8xx_fb_reg_base->dma_ctrl); lcdc_write(0, &da8xx_fb_reg_base->raster_ctrl); } static void lcd_calc_clk_divider(struct da8xx_fb_par *par) { unsigned int lcd_clk, div; /* Get clock from sysclk2 */ lcd_clk = clk_get(2); div = lcd_clk / par->pxl_clk; debug("LCD Clock: 0x%x Divider: 0x%x PixClk: 0x%x\n", lcd_clk, div, par->pxl_clk); /* Configure the LCD clock divisor. */ lcdc_write(LCD_CLK_DIVISOR(div) | (LCD_RASTER_MODE & 0x1), &da8xx_fb_reg_base->ctrl); } static int lcd_init(struct da8xx_fb_par *par, const struct lcd_ctrl_config *cfg, const struct da8xx_panel *panel) { u32 bpp; int ret = 0; lcd_reset(par); /* Calculate the divider */ lcd_calc_clk_divider(par); if (panel->invert_pxl_clk) lcdc_write((lcdc_read(&da8xx_fb_reg_base->raster_timing_2) | LCD_INVERT_PIXEL_CLOCK), &da8xx_fb_reg_base->raster_timing_2); else lcdc_write((lcdc_read(&da8xx_fb_reg_base->raster_timing_2) & ~LCD_INVERT_PIXEL_CLOCK), &da8xx_fb_reg_base->raster_timing_2); /* Configure the DMA burst size. */ ret = lcd_cfg_dma(cfg->dma_burst_sz); if (ret < 0) return ret; /* Configure the AC bias properties. */ lcd_cfg_ac_bias(cfg->ac_bias, cfg->ac_bias_intrpt); /* Configure the vertical and horizontal sync properties. */ lcd_cfg_vertical_sync(panel->vbp, panel->vsw, panel->vfp); lcd_cfg_horizontal_sync(panel->hbp, panel->hsw, panel->hfp); /* Configure for disply */ ret = lcd_cfg_display(cfg); if (ret < 0) return ret; if (QVGA != cfg->p_disp_panel->panel_type) return -EINVAL; if (cfg->bpp <= cfg->p_disp_panel->max_bpp && cfg->bpp >= cfg->p_disp_panel->min_bpp) bpp = cfg->bpp; else bpp = cfg->p_disp_panel->max_bpp; if (bpp == 12) bpp = 16; ret = lcd_cfg_frame_buffer(par, (unsigned int)panel->width, (unsigned int)panel->height, bpp, cfg->raster_order); if (ret < 0) return ret; /* Configure FDD */ lcdc_write((lcdc_read(&da8xx_fb_reg_base->raster_ctrl) & 0xfff00fff) | (cfg->fdd << 12), &da8xx_fb_reg_base->raster_ctrl); return 0; } static void lcdc_dma_start(void) { struct da8xx_fb_par *par = da8xx_fb_info->par; lcdc_write(par->dma_start, &da8xx_fb_reg_base->dma_frm_buf_base_addr_0); lcdc_write(par->dma_end, &da8xx_fb_reg_base->dma_frm_buf_ceiling_addr_0); lcdc_write(0, &da8xx_fb_reg_base->dma_frm_buf_base_addr_1); lcdc_write(0, &da8xx_fb_reg_base->dma_frm_buf_ceiling_addr_1); } static u32 lcdc_irq_handler(void) { struct da8xx_fb_par *par = da8xx_fb_info->par; u32 stat = lcdc_read(&da8xx_fb_reg_base->stat); u32 reg_ras; if ((stat & LCD_SYNC_LOST) && (stat & LCD_FIFO_UNDERFLOW)) { debug("LCD_SYNC_LOST\n"); lcd_disable_raster(); lcdc_write(stat, &da8xx_fb_reg_base->stat); lcd_enable_raster(); return LCD_SYNC_LOST; } else if (stat & LCD_PL_LOAD_DONE) { debug("LCD_PL_LOAD_DONE\n"); /* * Must disable raster before changing state of any control bit. * And also must be disabled before clearing the PL loading * interrupt via the following write to the status register. If * this is done after then one gets multiple PL done interrupts. */ lcd_disable_raster(); lcdc_write(stat, &da8xx_fb_reg_base->stat); /* Disable PL completion inerrupt */ reg_ras = lcdc_read(&da8xx_fb_reg_base->raster_ctrl); reg_ras &= ~LCD_PL_ENABLE; lcdc_write(reg_ras, &da8xx_fb_reg_base->raster_ctrl); /* Setup and start data loading mode */ lcd_blit(LOAD_DATA, par); return LCD_PL_LOAD_DONE; } else { lcdc_write(stat, &da8xx_fb_reg_base->stat); if (stat & LCD_END_OF_FRAME0) debug("LCD_END_OF_FRAME0\n"); lcdc_write(par->dma_start, &da8xx_fb_reg_base->dma_frm_buf_base_addr_0); lcdc_write(par->dma_end, &da8xx_fb_reg_base->dma_frm_buf_ceiling_addr_0); par->vsync_flag = 1; return LCD_END_OF_FRAME0; } return stat; } static u32 wait_for_event(u32 event) { u32 timeout = 50000; u32 ret; do { ret = lcdc_irq_handler(); udelay(1000); } while (!(ret & event)); if (timeout <= 0) { printf("%s: event %d not hit\n", __func__, event); return -1; } return 0; } void *video_hw_init(void) { struct da8xx_fb_par *par; int ret; u32 size; char *p; if (!lcd_panel) { printf("Display not initialized\n"); return NULL; } gpanel.winSizeX = lcd_panel->width; gpanel.winSizeY = lcd_panel->height; gpanel.plnSizeX = lcd_panel->width; gpanel.plnSizeY = lcd_panel->height; switch (bits_x_pixel) { case 24: gpanel.gdfBytesPP = 4; gpanel.gdfIndex = GDF_32BIT_X888RGB; break; case 16: gpanel.gdfBytesPP = 2; gpanel.gdfIndex = GDF_16BIT_565RGB; break; default: gpanel.gdfBytesPP = 1; gpanel.gdfIndex = GDF__8BIT_INDEX; break; } da8xx_fb_reg_base = (struct da8xx_lcd_regs *)DAVINCI_LCD_CNTL_BASE; debug("Resolution: %dx%d %x\n", gpanel.winSizeX, gpanel.winSizeY, lcd_cfg.bpp); size = sizeof(struct fb_info) + sizeof(struct da8xx_fb_par); da8xx_fb_info = malloc(size); debug("da8xx_fb_info at %x\n", (unsigned int)da8xx_fb_info); if (!da8xx_fb_info) { printf("Memory allocation failed for fb_info\n"); return NULL; } memset(da8xx_fb_info, 0, size); p = (char *)da8xx_fb_info; da8xx_fb_info->par = p + sizeof(struct fb_info); debug("da8xx_par at %x\n", (unsigned int)da8xx_fb_info->par); par = da8xx_fb_info->par; par->pxl_clk = lcd_panel->pxl_clk; if (lcd_init(par, &lcd_cfg, lcd_panel) < 0) { printf("lcd_init failed\n"); ret = -EFAULT; goto err_release_fb; } /* allocate frame buffer */ par->vram_size = lcd_panel->width * lcd_panel->height * lcd_cfg.bpp; par->vram_size = par->vram_size * LCD_NUM_BUFFERS / 8; par->vram_virt = malloc(par->vram_size); par->vram_phys = (dma_addr_t) par->vram_virt; debug("Requesting 0x%x bytes for framebuffer at 0x%x\n", (unsigned int)par->vram_size, (unsigned int)par->vram_virt); if (!par->vram_virt) { printf("GLCD: malloc for frame buffer failed\n"); ret = -EINVAL; goto err_release_fb; } gpanel.frameAdrs = (unsigned int)par->vram_virt; da8xx_fb_info->screen_base = (char *) par->vram_virt; da8xx_fb_fix.smem_start = gpanel.frameAdrs; da8xx_fb_fix.smem_len = par->vram_size; da8xx_fb_fix.line_length = (lcd_panel->width * lcd_cfg.bpp) / 8; par->dma_start = par->vram_phys; par->dma_end = par->dma_start + lcd_panel->height * da8xx_fb_fix.line_length - 1; /* allocate palette buffer */ par->v_palette_base = malloc(PALETTE_SIZE); if (!par->v_palette_base) { printf("GLCD: malloc for palette buffer failed\n"); goto err_release_fb_mem; } memset(par->v_palette_base, 0, PALETTE_SIZE); par->p_palette_base = (unsigned int)par->v_palette_base; /* Initialize par */ da8xx_fb_info->var.bits_per_pixel = lcd_cfg.bpp; da8xx_fb_var.xres = lcd_panel->width; da8xx_fb_var.xres_virtual = lcd_panel->width; da8xx_fb_var.yres = lcd_panel->height; da8xx_fb_var.yres_virtual = lcd_panel->height * LCD_NUM_BUFFERS; da8xx_fb_var.grayscale = lcd_cfg.p_disp_panel->panel_shade == MONOCHROME ? 1 : 0; da8xx_fb_var.bits_per_pixel = lcd_cfg.bpp; da8xx_fb_var.hsync_len = lcd_panel->hsw; da8xx_fb_var.vsync_len = lcd_panel->vsw; /* Initialize fbinfo */ da8xx_fb_info->flags = FBINFO_FLAG_DEFAULT; da8xx_fb_info->fix = da8xx_fb_fix; da8xx_fb_info->var = da8xx_fb_var; da8xx_fb_info->pseudo_palette = par->pseudo_palette; da8xx_fb_info->fix.visual = (da8xx_fb_info->var.bits_per_pixel <= 8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR; /* Clear interrupt */ memset((void *)par->vram_virt, 0, par->vram_size); lcd_disable_raster(); lcdc_write(0xFFFF, &da8xx_fb_reg_base->stat); debug("Palette at 0x%x size %d\n", par->p_palette_base, par->palette_sz); lcdc_dma_start(); /* Load a default palette */ fb_setcolreg(0, 0, 0, 0, 0xffff, da8xx_fb_info); /* Check that the palette is loaded */ wait_for_event(LCD_PL_LOAD_DONE); /* Wait until DMA is working */ wait_for_event(LCD_END_OF_FRAME0); return (void *)&gpanel; err_release_fb_mem: free(par->vram_virt); err_release_fb: free(da8xx_fb_info); return NULL; } void video_set_lut(unsigned int index, /* color number */ unsigned char r, /* red */ unsigned char g, /* green */ unsigned char b /* blue */ ) { return; } void da8xx_video_init(const struct da8xx_panel *panel, int bits_pixel) { lcd_panel = panel; bits_x_pixel = bits_pixel; }