1*83d290c5STom Rini // SPDX-License-Identifier: GPL-2.0+ 25dda7945SStefano Babic /* 35dda7945SStefano Babic * Porting to u-boot: 45dda7945SStefano Babic * 55dda7945SStefano Babic * (C) Copyright 2010 65dda7945SStefano Babic * Stefano Babic, DENX Software Engineering, sbabic@denx.de 75dda7945SStefano Babic * 85dda7945SStefano Babic * MX51 Linux framebuffer: 95dda7945SStefano Babic * 105dda7945SStefano Babic * (C) Copyright 2004-2010 Freescale Semiconductor, Inc. 115dda7945SStefano Babic */ 125dda7945SStefano Babic 135dda7945SStefano Babic #include <common.h> 141221ce45SMasahiro Yamada #include <linux/errno.h> 15a69214dcSEric Nelson #include <asm/global_data.h> 165dda7945SStefano Babic #include <linux/string.h> 175dda7945SStefano Babic #include <linux/list.h> 185dda7945SStefano Babic #include <linux/fb.h> 195dda7945SStefano Babic #include <asm/io.h> 205dda7945SStefano Babic #include <malloc.h> 21e9934f0bSStefano Babic #include <video_fb.h> 225dda7945SStefano Babic #include "videomodes.h" 235dda7945SStefano Babic #include "ipu.h" 245dda7945SStefano Babic #include "mxcfb.h" 255f8e17ceSEric Nelson #include "ipu_regs.h" 265dda7945SStefano Babic 27a69214dcSEric Nelson DECLARE_GLOBAL_DATA_PTR; 28a69214dcSEric Nelson 295dda7945SStefano Babic static int mxcfb_map_video_memory(struct fb_info *fbi); 305dda7945SStefano Babic static int mxcfb_unmap_video_memory(struct fb_info *fbi); 315dda7945SStefano Babic 32e9934f0bSStefano Babic /* graphics setup */ 33e9934f0bSStefano Babic static GraphicDevice panel; 3409c8bb26SEric Nelson static struct fb_videomode const *gmode; 3502ae1a18SMarek Vasut static uint8_t gdisp; 3602ae1a18SMarek Vasut static uint32_t gpixfmt; 375dda7945SStefano Babic 38c5fe2532SJeroen Hofstee static void fb_videomode_to_var(struct fb_var_screeninfo *var, 395dda7945SStefano Babic const struct fb_videomode *mode) 405dda7945SStefano Babic { 415dda7945SStefano Babic var->xres = mode->xres; 425dda7945SStefano Babic var->yres = mode->yres; 435dda7945SStefano Babic var->xres_virtual = mode->xres; 445dda7945SStefano Babic var->yres_virtual = mode->yres; 455dda7945SStefano Babic var->xoffset = 0; 465dda7945SStefano Babic var->yoffset = 0; 475dda7945SStefano Babic var->pixclock = mode->pixclock; 485dda7945SStefano Babic var->left_margin = mode->left_margin; 495dda7945SStefano Babic var->right_margin = mode->right_margin; 505dda7945SStefano Babic var->upper_margin = mode->upper_margin; 515dda7945SStefano Babic var->lower_margin = mode->lower_margin; 525dda7945SStefano Babic var->hsync_len = mode->hsync_len; 535dda7945SStefano Babic var->vsync_len = mode->vsync_len; 545dda7945SStefano Babic var->sync = mode->sync; 555dda7945SStefano Babic var->vmode = mode->vmode & FB_VMODE_MASK; 565dda7945SStefano Babic } 575dda7945SStefano Babic 585dda7945SStefano Babic /* 595dda7945SStefano Babic * Structure containing the MXC specific framebuffer information. 605dda7945SStefano Babic */ 615dda7945SStefano Babic struct mxcfb_info { 625dda7945SStefano Babic int blank; 635dda7945SStefano Babic ipu_channel_t ipu_ch; 645dda7945SStefano Babic int ipu_di; 655dda7945SStefano Babic u32 ipu_di_pix_fmt; 665dda7945SStefano Babic unsigned char overlay; 675dda7945SStefano Babic unsigned char alpha_chan_en; 685dda7945SStefano Babic dma_addr_t alpha_phy_addr0; 695dda7945SStefano Babic dma_addr_t alpha_phy_addr1; 705dda7945SStefano Babic void *alpha_virt_addr0; 715dda7945SStefano Babic void *alpha_virt_addr1; 725dda7945SStefano Babic uint32_t alpha_mem_len; 735dda7945SStefano Babic uint32_t cur_ipu_buf; 745dda7945SStefano Babic uint32_t cur_ipu_alpha_buf; 755dda7945SStefano Babic 765dda7945SStefano Babic u32 pseudo_palette[16]; 775dda7945SStefano Babic }; 785dda7945SStefano Babic 795dda7945SStefano Babic enum { 805dda7945SStefano Babic BOTH_ON, 815dda7945SStefano Babic SRC_ON, 825dda7945SStefano Babic TGT_ON, 835dda7945SStefano Babic BOTH_OFF 845dda7945SStefano Babic }; 855dda7945SStefano Babic 865dda7945SStefano Babic static unsigned long default_bpp = 16; 875dda7945SStefano Babic static unsigned char g_dp_in_use; 885dda7945SStefano Babic static struct fb_info *mxcfb_info[3]; 895dda7945SStefano Babic static int ext_clk_used; 905dda7945SStefano Babic 915dda7945SStefano Babic static uint32_t bpp_to_pixfmt(struct fb_info *fbi) 925dda7945SStefano Babic { 935dda7945SStefano Babic uint32_t pixfmt = 0; 945dda7945SStefano Babic 955dda7945SStefano Babic debug("bpp_to_pixfmt: %d\n", fbi->var.bits_per_pixel); 965dda7945SStefano Babic 975dda7945SStefano Babic if (fbi->var.nonstd) 985dda7945SStefano Babic return fbi->var.nonstd; 995dda7945SStefano Babic 1005dda7945SStefano Babic switch (fbi->var.bits_per_pixel) { 1015dda7945SStefano Babic case 24: 1025dda7945SStefano Babic pixfmt = IPU_PIX_FMT_BGR24; 1035dda7945SStefano Babic break; 1045dda7945SStefano Babic case 32: 1055dda7945SStefano Babic pixfmt = IPU_PIX_FMT_BGR32; 1065dda7945SStefano Babic break; 1075dda7945SStefano Babic case 16: 1085dda7945SStefano Babic pixfmt = IPU_PIX_FMT_RGB565; 1095dda7945SStefano Babic break; 1105dda7945SStefano Babic } 1115dda7945SStefano Babic return pixfmt; 1125dda7945SStefano Babic } 1135dda7945SStefano Babic 1145dda7945SStefano Babic /* 1155dda7945SStefano Babic * Set fixed framebuffer parameters based on variable settings. 1165dda7945SStefano Babic * 1175dda7945SStefano Babic * @param info framebuffer information pointer 1185dda7945SStefano Babic */ 1195dda7945SStefano Babic static int mxcfb_set_fix(struct fb_info *info) 1205dda7945SStefano Babic { 1215dda7945SStefano Babic struct fb_fix_screeninfo *fix = &info->fix; 1225dda7945SStefano Babic struct fb_var_screeninfo *var = &info->var; 1235dda7945SStefano Babic 1245dda7945SStefano Babic fix->line_length = var->xres_virtual * var->bits_per_pixel / 8; 1255dda7945SStefano Babic 1265dda7945SStefano Babic fix->type = FB_TYPE_PACKED_PIXELS; 1275dda7945SStefano Babic fix->accel = FB_ACCEL_NONE; 1285dda7945SStefano Babic fix->visual = FB_VISUAL_TRUECOLOR; 1295dda7945SStefano Babic fix->xpanstep = 1; 1305dda7945SStefano Babic fix->ypanstep = 1; 1315dda7945SStefano Babic 1325dda7945SStefano Babic return 0; 1335dda7945SStefano Babic } 1345dda7945SStefano Babic 1355dda7945SStefano Babic static int setup_disp_channel1(struct fb_info *fbi) 1365dda7945SStefano Babic { 1375dda7945SStefano Babic ipu_channel_params_t params; 1385dda7945SStefano Babic struct mxcfb_info *mxc_fbi = (struct mxcfb_info *)fbi->par; 1395dda7945SStefano Babic 1405dda7945SStefano Babic memset(¶ms, 0, sizeof(params)); 1415dda7945SStefano Babic params.mem_dp_bg_sync.di = mxc_fbi->ipu_di; 1425dda7945SStefano Babic 1435dda7945SStefano Babic debug("%s called\n", __func__); 1445dda7945SStefano Babic /* 1455dda7945SStefano Babic * Assuming interlaced means yuv output, below setting also 1465dda7945SStefano Babic * valid for mem_dc_sync. FG should have the same vmode as BG. 1475dda7945SStefano Babic */ 1485dda7945SStefano Babic if (fbi->var.vmode & FB_VMODE_INTERLACED) { 1495dda7945SStefano Babic params.mem_dp_bg_sync.interlaced = 1; 1505dda7945SStefano Babic params.mem_dp_bg_sync.out_pixel_fmt = 1515dda7945SStefano Babic IPU_PIX_FMT_YUV444; 1525dda7945SStefano Babic } else { 1535dda7945SStefano Babic if (mxc_fbi->ipu_di_pix_fmt) { 1545dda7945SStefano Babic params.mem_dp_bg_sync.out_pixel_fmt = 1555dda7945SStefano Babic mxc_fbi->ipu_di_pix_fmt; 1565dda7945SStefano Babic } else { 1575dda7945SStefano Babic params.mem_dp_bg_sync.out_pixel_fmt = 1585dda7945SStefano Babic IPU_PIX_FMT_RGB666; 1595dda7945SStefano Babic } 1605dda7945SStefano Babic } 1615dda7945SStefano Babic params.mem_dp_bg_sync.in_pixel_fmt = bpp_to_pixfmt(fbi); 1625dda7945SStefano Babic if (mxc_fbi->alpha_chan_en) 1635dda7945SStefano Babic params.mem_dp_bg_sync.alpha_chan_en = 1; 1645dda7945SStefano Babic 1655dda7945SStefano Babic ipu_init_channel(mxc_fbi->ipu_ch, ¶ms); 1665dda7945SStefano Babic 1675dda7945SStefano Babic return 0; 1685dda7945SStefano Babic } 1695dda7945SStefano Babic 1705dda7945SStefano Babic static int setup_disp_channel2(struct fb_info *fbi) 1715dda7945SStefano Babic { 1725dda7945SStefano Babic int retval = 0; 1735dda7945SStefano Babic struct mxcfb_info *mxc_fbi = (struct mxcfb_info *)fbi->par; 1745dda7945SStefano Babic 1755dda7945SStefano Babic mxc_fbi->cur_ipu_buf = 1; 1765dda7945SStefano Babic if (mxc_fbi->alpha_chan_en) 1775dda7945SStefano Babic mxc_fbi->cur_ipu_alpha_buf = 1; 1785dda7945SStefano Babic 1795dda7945SStefano Babic fbi->var.xoffset = fbi->var.yoffset = 0; 1805dda7945SStefano Babic 1815dda7945SStefano Babic debug("%s: %x %d %d %d %lx %lx\n", 1825dda7945SStefano Babic __func__, 1835dda7945SStefano Babic mxc_fbi->ipu_ch, 1845dda7945SStefano Babic fbi->var.xres, 1855dda7945SStefano Babic fbi->var.yres, 1865dda7945SStefano Babic fbi->fix.line_length, 1875dda7945SStefano Babic fbi->fix.smem_start, 1885dda7945SStefano Babic fbi->fix.smem_start + 1895dda7945SStefano Babic (fbi->fix.line_length * fbi->var.yres)); 1905dda7945SStefano Babic 1915dda7945SStefano Babic retval = ipu_init_channel_buffer(mxc_fbi->ipu_ch, IPU_INPUT_BUFFER, 1925dda7945SStefano Babic bpp_to_pixfmt(fbi), 1935dda7945SStefano Babic fbi->var.xres, fbi->var.yres, 1945dda7945SStefano Babic fbi->fix.line_length, 1955dda7945SStefano Babic fbi->fix.smem_start + 1965dda7945SStefano Babic (fbi->fix.line_length * fbi->var.yres), 1975dda7945SStefano Babic fbi->fix.smem_start, 1985dda7945SStefano Babic 0, 0); 1995dda7945SStefano Babic if (retval) 2005dda7945SStefano Babic printf("ipu_init_channel_buffer error %d\n", retval); 2015dda7945SStefano Babic 2025dda7945SStefano Babic return retval; 2035dda7945SStefano Babic } 2045dda7945SStefano Babic 2055dda7945SStefano Babic /* 2065dda7945SStefano Babic * Set framebuffer parameters and change the operating mode. 2075dda7945SStefano Babic * 2085dda7945SStefano Babic * @param info framebuffer information pointer 2095dda7945SStefano Babic */ 2105dda7945SStefano Babic static int mxcfb_set_par(struct fb_info *fbi) 2115dda7945SStefano Babic { 2125dda7945SStefano Babic int retval = 0; 2135dda7945SStefano Babic u32 mem_len; 2145dda7945SStefano Babic ipu_di_signal_cfg_t sig_cfg; 2155dda7945SStefano Babic struct mxcfb_info *mxc_fbi = (struct mxcfb_info *)fbi->par; 2165dda7945SStefano Babic uint32_t out_pixel_fmt; 2175dda7945SStefano Babic 2185dda7945SStefano Babic ipu_disable_channel(mxc_fbi->ipu_ch); 2195dda7945SStefano Babic ipu_uninit_channel(mxc_fbi->ipu_ch); 2205dda7945SStefano Babic mxcfb_set_fix(fbi); 2215dda7945SStefano Babic 2225dda7945SStefano Babic mem_len = fbi->var.yres_virtual * fbi->fix.line_length; 2235dda7945SStefano Babic if (!fbi->fix.smem_start || (mem_len > fbi->fix.smem_len)) { 2245dda7945SStefano Babic if (fbi->fix.smem_start) 2255dda7945SStefano Babic mxcfb_unmap_video_memory(fbi); 2265dda7945SStefano Babic 2275dda7945SStefano Babic if (mxcfb_map_video_memory(fbi) < 0) 2285dda7945SStefano Babic return -ENOMEM; 2295dda7945SStefano Babic } 2305dda7945SStefano Babic 2315dda7945SStefano Babic setup_disp_channel1(fbi); 2325dda7945SStefano Babic 2335dda7945SStefano Babic memset(&sig_cfg, 0, sizeof(sig_cfg)); 2345dda7945SStefano Babic if (fbi->var.vmode & FB_VMODE_INTERLACED) { 2355dda7945SStefano Babic sig_cfg.interlaced = 1; 2365dda7945SStefano Babic out_pixel_fmt = IPU_PIX_FMT_YUV444; 2375dda7945SStefano Babic } else { 2385dda7945SStefano Babic if (mxc_fbi->ipu_di_pix_fmt) 2395dda7945SStefano Babic out_pixel_fmt = mxc_fbi->ipu_di_pix_fmt; 2405dda7945SStefano Babic else 2415dda7945SStefano Babic out_pixel_fmt = IPU_PIX_FMT_RGB666; 2425dda7945SStefano Babic } 2435dda7945SStefano Babic if (fbi->var.vmode & FB_VMODE_ODD_FLD_FIRST) /* PAL */ 2445dda7945SStefano Babic sig_cfg.odd_field_first = 1; 2455dda7945SStefano Babic if ((fbi->var.sync & FB_SYNC_EXT) || ext_clk_used) 2465dda7945SStefano Babic sig_cfg.ext_clk = 1; 2475dda7945SStefano Babic if (fbi->var.sync & FB_SYNC_HOR_HIGH_ACT) 2485dda7945SStefano Babic sig_cfg.Hsync_pol = 1; 2495dda7945SStefano Babic if (fbi->var.sync & FB_SYNC_VERT_HIGH_ACT) 2505dda7945SStefano Babic sig_cfg.Vsync_pol = 1; 2515dda7945SStefano Babic if (!(fbi->var.sync & FB_SYNC_CLK_LAT_FALL)) 2525dda7945SStefano Babic sig_cfg.clk_pol = 1; 2535dda7945SStefano Babic if (fbi->var.sync & FB_SYNC_DATA_INVERT) 2545dda7945SStefano Babic sig_cfg.data_pol = 1; 2555dda7945SStefano Babic if (!(fbi->var.sync & FB_SYNC_OE_LOW_ACT)) 2565dda7945SStefano Babic sig_cfg.enable_pol = 1; 2575dda7945SStefano Babic if (fbi->var.sync & FB_SYNC_CLK_IDLE_EN) 2585dda7945SStefano Babic sig_cfg.clkidle_en = 1; 2595dda7945SStefano Babic 260c1420328SJeroen Hofstee debug("pixclock = %lu Hz\n", PICOS2KHZ(fbi->var.pixclock) * 1000UL); 2615dda7945SStefano Babic 2625dda7945SStefano Babic if (ipu_init_sync_panel(mxc_fbi->ipu_di, 2635dda7945SStefano Babic (PICOS2KHZ(fbi->var.pixclock)) * 1000UL, 2645dda7945SStefano Babic fbi->var.xres, fbi->var.yres, 2655dda7945SStefano Babic out_pixel_fmt, 2665dda7945SStefano Babic fbi->var.left_margin, 2675dda7945SStefano Babic fbi->var.hsync_len, 2685dda7945SStefano Babic fbi->var.right_margin, 2695dda7945SStefano Babic fbi->var.upper_margin, 2705dda7945SStefano Babic fbi->var.vsync_len, 2715dda7945SStefano Babic fbi->var.lower_margin, 2725dda7945SStefano Babic 0, sig_cfg) != 0) { 2735dda7945SStefano Babic puts("mxcfb: Error initializing panel.\n"); 2745dda7945SStefano Babic return -EINVAL; 2755dda7945SStefano Babic } 2765dda7945SStefano Babic 2775dda7945SStefano Babic retval = setup_disp_channel2(fbi); 2785dda7945SStefano Babic if (retval) 2795dda7945SStefano Babic return retval; 2805dda7945SStefano Babic 2815dda7945SStefano Babic if (mxc_fbi->blank == FB_BLANK_UNBLANK) 2825dda7945SStefano Babic ipu_enable_channel(mxc_fbi->ipu_ch); 2835dda7945SStefano Babic 2845dda7945SStefano Babic return retval; 2855dda7945SStefano Babic } 2865dda7945SStefano Babic 2875dda7945SStefano Babic /* 2885dda7945SStefano Babic * Check framebuffer variable parameters and adjust to valid values. 2895dda7945SStefano Babic * 2905dda7945SStefano Babic * @param var framebuffer variable parameters 2915dda7945SStefano Babic * 2925dda7945SStefano Babic * @param info framebuffer information pointer 2935dda7945SStefano Babic */ 2945dda7945SStefano Babic static int mxcfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) 2955dda7945SStefano Babic { 2965dda7945SStefano Babic u32 vtotal; 2975dda7945SStefano Babic u32 htotal; 2985dda7945SStefano Babic 2995dda7945SStefano Babic if (var->xres_virtual < var->xres) 3005dda7945SStefano Babic var->xres_virtual = var->xres; 3015dda7945SStefano Babic if (var->yres_virtual < var->yres) 3025dda7945SStefano Babic var->yres_virtual = var->yres; 3035dda7945SStefano Babic 3045dda7945SStefano Babic if ((var->bits_per_pixel != 32) && (var->bits_per_pixel != 24) && 3055dda7945SStefano Babic (var->bits_per_pixel != 16) && (var->bits_per_pixel != 8)) 3065dda7945SStefano Babic var->bits_per_pixel = default_bpp; 3075dda7945SStefano Babic 3085dda7945SStefano Babic switch (var->bits_per_pixel) { 3095dda7945SStefano Babic case 8: 3105dda7945SStefano Babic var->red.length = 3; 3115dda7945SStefano Babic var->red.offset = 5; 3125dda7945SStefano Babic var->red.msb_right = 0; 3135dda7945SStefano Babic 3145dda7945SStefano Babic var->green.length = 3; 3155dda7945SStefano Babic var->green.offset = 2; 3165dda7945SStefano Babic var->green.msb_right = 0; 3175dda7945SStefano Babic 3185dda7945SStefano Babic var->blue.length = 2; 3195dda7945SStefano Babic var->blue.offset = 0; 3205dda7945SStefano Babic var->blue.msb_right = 0; 3215dda7945SStefano Babic 3225dda7945SStefano Babic var->transp.length = 0; 3235dda7945SStefano Babic var->transp.offset = 0; 3245dda7945SStefano Babic var->transp.msb_right = 0; 3255dda7945SStefano Babic break; 3265dda7945SStefano Babic case 16: 3275dda7945SStefano Babic var->red.length = 5; 3285dda7945SStefano Babic var->red.offset = 11; 3295dda7945SStefano Babic var->red.msb_right = 0; 3305dda7945SStefano Babic 3315dda7945SStefano Babic var->green.length = 6; 3325dda7945SStefano Babic var->green.offset = 5; 3335dda7945SStefano Babic var->green.msb_right = 0; 3345dda7945SStefano Babic 3355dda7945SStefano Babic var->blue.length = 5; 3365dda7945SStefano Babic var->blue.offset = 0; 3375dda7945SStefano Babic var->blue.msb_right = 0; 3385dda7945SStefano Babic 3395dda7945SStefano Babic var->transp.length = 0; 3405dda7945SStefano Babic var->transp.offset = 0; 3415dda7945SStefano Babic var->transp.msb_right = 0; 3425dda7945SStefano Babic break; 3435dda7945SStefano Babic case 24: 3445dda7945SStefano Babic var->red.length = 8; 3455dda7945SStefano Babic var->red.offset = 16; 3465dda7945SStefano Babic var->red.msb_right = 0; 3475dda7945SStefano Babic 3485dda7945SStefano Babic var->green.length = 8; 3495dda7945SStefano Babic var->green.offset = 8; 3505dda7945SStefano Babic var->green.msb_right = 0; 3515dda7945SStefano Babic 3525dda7945SStefano Babic var->blue.length = 8; 3535dda7945SStefano Babic var->blue.offset = 0; 3545dda7945SStefano Babic var->blue.msb_right = 0; 3555dda7945SStefano Babic 3565dda7945SStefano Babic var->transp.length = 0; 3575dda7945SStefano Babic var->transp.offset = 0; 3585dda7945SStefano Babic var->transp.msb_right = 0; 3595dda7945SStefano Babic break; 3605dda7945SStefano Babic case 32: 3615dda7945SStefano Babic var->red.length = 8; 3625dda7945SStefano Babic var->red.offset = 16; 3635dda7945SStefano Babic var->red.msb_right = 0; 3645dda7945SStefano Babic 3655dda7945SStefano Babic var->green.length = 8; 3665dda7945SStefano Babic var->green.offset = 8; 3675dda7945SStefano Babic var->green.msb_right = 0; 3685dda7945SStefano Babic 3695dda7945SStefano Babic var->blue.length = 8; 3705dda7945SStefano Babic var->blue.offset = 0; 3715dda7945SStefano Babic var->blue.msb_right = 0; 3725dda7945SStefano Babic 3735dda7945SStefano Babic var->transp.length = 8; 3745dda7945SStefano Babic var->transp.offset = 24; 3755dda7945SStefano Babic var->transp.msb_right = 0; 3765dda7945SStefano Babic break; 3775dda7945SStefano Babic } 3785dda7945SStefano Babic 3795dda7945SStefano Babic if (var->pixclock < 1000) { 3805dda7945SStefano Babic htotal = var->xres + var->right_margin + var->hsync_len + 3815dda7945SStefano Babic var->left_margin; 3825dda7945SStefano Babic vtotal = var->yres + var->lower_margin + var->vsync_len + 3835dda7945SStefano Babic var->upper_margin; 3845dda7945SStefano Babic var->pixclock = (vtotal * htotal * 6UL) / 100UL; 3855dda7945SStefano Babic var->pixclock = KHZ2PICOS(var->pixclock); 3865dda7945SStefano Babic printf("pixclock set for 60Hz refresh = %u ps\n", 3875dda7945SStefano Babic var->pixclock); 3885dda7945SStefano Babic } 3895dda7945SStefano Babic 3905dda7945SStefano Babic var->height = -1; 3915dda7945SStefano Babic var->width = -1; 3925dda7945SStefano Babic var->grayscale = 0; 3935dda7945SStefano Babic 3945dda7945SStefano Babic return 0; 3955dda7945SStefano Babic } 3965dda7945SStefano Babic 3975dda7945SStefano Babic static int mxcfb_map_video_memory(struct fb_info *fbi) 3985dda7945SStefano Babic { 3995dda7945SStefano Babic if (fbi->fix.smem_len < fbi->var.yres_virtual * fbi->fix.line_length) { 4005dda7945SStefano Babic fbi->fix.smem_len = fbi->var.yres_virtual * 4015dda7945SStefano Babic fbi->fix.line_length; 4025dda7945SStefano Babic } 4034acb4d39SEric Nelson fbi->fix.smem_len = roundup(fbi->fix.smem_len, ARCH_DMA_MINALIGN); 4044acb4d39SEric Nelson fbi->screen_base = (char *)memalign(ARCH_DMA_MINALIGN, 4054acb4d39SEric Nelson fbi->fix.smem_len); 406e9934f0bSStefano Babic fbi->fix.smem_start = (unsigned long)fbi->screen_base; 4075dda7945SStefano Babic if (fbi->screen_base == 0) { 4085dda7945SStefano Babic puts("Unable to allocate framebuffer memory\n"); 4095dda7945SStefano Babic fbi->fix.smem_len = 0; 4105dda7945SStefano Babic fbi->fix.smem_start = 0; 4115dda7945SStefano Babic return -EBUSY; 4125dda7945SStefano Babic } 4135dda7945SStefano Babic 4145dda7945SStefano Babic debug("allocated fb @ paddr=0x%08X, size=%d.\n", 4155dda7945SStefano Babic (uint32_t) fbi->fix.smem_start, fbi->fix.smem_len); 4165dda7945SStefano Babic 4175dda7945SStefano Babic fbi->screen_size = fbi->fix.smem_len; 4185dda7945SStefano Babic 419a69214dcSEric Nelson gd->fb_base = fbi->fix.smem_start; 420a69214dcSEric Nelson 4215dda7945SStefano Babic /* Clear the screen */ 4225dda7945SStefano Babic memset((char *)fbi->screen_base, 0, fbi->fix.smem_len); 4235dda7945SStefano Babic 4245dda7945SStefano Babic return 0; 4255dda7945SStefano Babic } 4265dda7945SStefano Babic 4275dda7945SStefano Babic static int mxcfb_unmap_video_memory(struct fb_info *fbi) 4285dda7945SStefano Babic { 4295dda7945SStefano Babic fbi->screen_base = 0; 4305dda7945SStefano Babic fbi->fix.smem_start = 0; 4315dda7945SStefano Babic fbi->fix.smem_len = 0; 4325dda7945SStefano Babic return 0; 4335dda7945SStefano Babic } 4345dda7945SStefano Babic 4355dda7945SStefano Babic /* 4365dda7945SStefano Babic * Initializes the framebuffer information pointer. After allocating 4375dda7945SStefano Babic * sufficient memory for the framebuffer structure, the fields are 4385dda7945SStefano Babic * filled with custom information passed in from the configurable 4395dda7945SStefano Babic * structures. This includes information such as bits per pixel, 4405dda7945SStefano Babic * color maps, screen width/height and RGBA offsets. 4415dda7945SStefano Babic * 4425dda7945SStefano Babic * @return Framebuffer structure initialized with our information 4435dda7945SStefano Babic */ 4445dda7945SStefano Babic static struct fb_info *mxcfb_init_fbinfo(void) 4455dda7945SStefano Babic { 4465dda7945SStefano Babic #define BYTES_PER_LONG 4 4475dda7945SStefano Babic #define PADDING (BYTES_PER_LONG - (sizeof(struct fb_info) % BYTES_PER_LONG)) 4485dda7945SStefano Babic struct fb_info *fbi; 4495dda7945SStefano Babic struct mxcfb_info *mxcfbi; 4505dda7945SStefano Babic char *p; 4515dda7945SStefano Babic int size = sizeof(struct mxcfb_info) + PADDING + 4525dda7945SStefano Babic sizeof(struct fb_info); 4535dda7945SStefano Babic 4545dda7945SStefano Babic debug("%s: %d %d %d %d\n", 4555dda7945SStefano Babic __func__, 4565dda7945SStefano Babic PADDING, 4575dda7945SStefano Babic size, 4585dda7945SStefano Babic sizeof(struct mxcfb_info), 4595dda7945SStefano Babic sizeof(struct fb_info)); 4605dda7945SStefano Babic /* 4615dda7945SStefano Babic * Allocate sufficient memory for the fb structure 4625dda7945SStefano Babic */ 4635dda7945SStefano Babic 4645dda7945SStefano Babic p = malloc(size); 4655dda7945SStefano Babic if (!p) 4665dda7945SStefano Babic return NULL; 4675dda7945SStefano Babic 4685dda7945SStefano Babic memset(p, 0, size); 4695dda7945SStefano Babic 4705dda7945SStefano Babic fbi = (struct fb_info *)p; 4715dda7945SStefano Babic fbi->par = p + sizeof(struct fb_info) + PADDING; 4725dda7945SStefano Babic 4735dda7945SStefano Babic mxcfbi = (struct mxcfb_info *)fbi->par; 4745dda7945SStefano Babic debug("Framebuffer structures at: fbi=0x%x mxcfbi=0x%x\n", 4755dda7945SStefano Babic (unsigned int)fbi, (unsigned int)mxcfbi); 4765dda7945SStefano Babic 4775dda7945SStefano Babic fbi->var.activate = FB_ACTIVATE_NOW; 4785dda7945SStefano Babic 4795dda7945SStefano Babic fbi->flags = FBINFO_FLAG_DEFAULT; 4805dda7945SStefano Babic fbi->pseudo_palette = mxcfbi->pseudo_palette; 4815dda7945SStefano Babic 4825dda7945SStefano Babic return fbi; 4835dda7945SStefano Babic } 4845dda7945SStefano Babic 4855dda7945SStefano Babic /* 4865dda7945SStefano Babic * Probe routine for the framebuffer driver. It is called during the 4875dda7945SStefano Babic * driver binding process. The following functions are performed in 4885dda7945SStefano Babic * this routine: Framebuffer initialization, Memory allocation and 4895dda7945SStefano Babic * mapping, Framebuffer registration, IPU initialization. 4905dda7945SStefano Babic * 4915dda7945SStefano Babic * @return Appropriate error code to the kernel common code 4925dda7945SStefano Babic */ 49302ae1a18SMarek Vasut static int mxcfb_probe(u32 interface_pix_fmt, uint8_t disp, 49409c8bb26SEric Nelson struct fb_videomode const *mode) 4955dda7945SStefano Babic { 4965dda7945SStefano Babic struct fb_info *fbi; 4975dda7945SStefano Babic struct mxcfb_info *mxcfbi; 4985dda7945SStefano Babic int ret = 0; 4995dda7945SStefano Babic 5005dda7945SStefano Babic /* 5015dda7945SStefano Babic * Initialize FB structures 5025dda7945SStefano Babic */ 5035dda7945SStefano Babic fbi = mxcfb_init_fbinfo(); 5045dda7945SStefano Babic if (!fbi) { 5055dda7945SStefano Babic ret = -ENOMEM; 5065dda7945SStefano Babic goto err0; 5075dda7945SStefano Babic } 5085dda7945SStefano Babic mxcfbi = (struct mxcfb_info *)fbi->par; 5095dda7945SStefano Babic 5105dda7945SStefano Babic if (!g_dp_in_use) { 5115dda7945SStefano Babic mxcfbi->ipu_ch = MEM_BG_SYNC; 5125dda7945SStefano Babic mxcfbi->blank = FB_BLANK_UNBLANK; 5135dda7945SStefano Babic } else { 5145dda7945SStefano Babic mxcfbi->ipu_ch = MEM_DC_SYNC; 5155dda7945SStefano Babic mxcfbi->blank = FB_BLANK_POWERDOWN; 5165dda7945SStefano Babic } 5175dda7945SStefano Babic 51802ae1a18SMarek Vasut mxcfbi->ipu_di = disp; 5195dda7945SStefano Babic 5205dda7945SStefano Babic ipu_disp_set_global_alpha(mxcfbi->ipu_ch, 1, 0x80); 5215dda7945SStefano Babic ipu_disp_set_color_key(mxcfbi->ipu_ch, 0, 0); 5225dda7945SStefano Babic strcpy(fbi->fix.id, "DISP3 BG"); 5235dda7945SStefano Babic 5245dda7945SStefano Babic g_dp_in_use = 1; 5255dda7945SStefano Babic 5265dda7945SStefano Babic mxcfb_info[mxcfbi->ipu_di] = fbi; 5275dda7945SStefano Babic 5285dda7945SStefano Babic /* Need dummy values until real panel is configured */ 5295dda7945SStefano Babic 5305dda7945SStefano Babic mxcfbi->ipu_di_pix_fmt = interface_pix_fmt; 5315dda7945SStefano Babic fb_videomode_to_var(&fbi->var, mode); 532e9934f0bSStefano Babic fbi->var.bits_per_pixel = 16; 533e9934f0bSStefano Babic fbi->fix.line_length = fbi->var.xres * (fbi->var.bits_per_pixel / 8); 534e9934f0bSStefano Babic fbi->fix.smem_len = fbi->var.yres_virtual * fbi->fix.line_length; 5355dda7945SStefano Babic 5365dda7945SStefano Babic mxcfb_check_var(&fbi->var, fbi); 5375dda7945SStefano Babic 5385dda7945SStefano Babic /* Default Y virtual size is 2x panel size */ 5395dda7945SStefano Babic fbi->var.yres_virtual = fbi->var.yres * 2; 5405dda7945SStefano Babic 5415dda7945SStefano Babic mxcfb_set_fix(fbi); 5425dda7945SStefano Babic 543c1420328SJeroen Hofstee /* allocate fb first */ 5445dda7945SStefano Babic if (mxcfb_map_video_memory(fbi) < 0) 5455dda7945SStefano Babic return -ENOMEM; 5465dda7945SStefano Babic 5475dda7945SStefano Babic mxcfb_set_par(fbi); 5485dda7945SStefano Babic 549e9934f0bSStefano Babic panel.winSizeX = mode->xres; 550e9934f0bSStefano Babic panel.winSizeY = mode->yres; 551e9934f0bSStefano Babic panel.plnSizeX = mode->xres; 552e9934f0bSStefano Babic panel.plnSizeY = mode->yres; 5535dda7945SStefano Babic 554e9934f0bSStefano Babic panel.frameAdrs = (u32)fbi->screen_base; 555e9934f0bSStefano Babic panel.memSize = fbi->screen_size; 5565dda7945SStefano Babic 557e9934f0bSStefano Babic panel.gdfBytesPP = 2; 558e9934f0bSStefano Babic panel.gdfIndex = GDF_16BIT_565RGB; 5595dda7945SStefano Babic 5605dda7945SStefano Babic ipu_dump_registers(); 5615dda7945SStefano Babic 5625dda7945SStefano Babic return 0; 5635dda7945SStefano Babic 5645dda7945SStefano Babic err0: 5655dda7945SStefano Babic return ret; 5665dda7945SStefano Babic } 5675dda7945SStefano Babic 5685f8e17ceSEric Nelson void ipuv3_fb_shutdown(void) 5695f8e17ceSEric Nelson { 5700d1ae97cSAnatolij Gustschin int i; 5719493d05aSTom Rini struct ipu_stat *stat = (struct ipu_stat *)IPU_STAT; 5725f8e17ceSEric Nelson 573f8ba7f27SAnatolij Gustschin if (!ipu_clk_enabled()) 574f8ba7f27SAnatolij Gustschin return; 575f8ba7f27SAnatolij Gustschin 5765f8e17ceSEric Nelson for (i = 0; i < ARRAY_SIZE(mxcfb_info); i++) { 5775f8e17ceSEric Nelson struct fb_info *fbi = mxcfb_info[i]; 5785f8e17ceSEric Nelson if (fbi) { 5795f8e17ceSEric Nelson struct mxcfb_info *mxc_fbi = fbi->par; 5805f8e17ceSEric Nelson ipu_disable_channel(mxc_fbi->ipu_ch); 5815f8e17ceSEric Nelson ipu_uninit_channel(mxc_fbi->ipu_ch); 5825f8e17ceSEric Nelson } 5835f8e17ceSEric Nelson } 5845f8e17ceSEric Nelson for (i = 0; i < ARRAY_SIZE(stat->int_stat); i++) { 5855f8e17ceSEric Nelson __raw_writel(__raw_readl(&stat->int_stat[i]), 5865f8e17ceSEric Nelson &stat->int_stat[i]); 5875f8e17ceSEric Nelson } 5885f8e17ceSEric Nelson } 5895f8e17ceSEric Nelson 590e9934f0bSStefano Babic void *video_hw_init(void) 5915dda7945SStefano Babic { 5925dda7945SStefano Babic int ret; 5935dda7945SStefano Babic 5945dda7945SStefano Babic ret = ipu_probe(); 5955dda7945SStefano Babic if (ret) 5965dda7945SStefano Babic puts("Error initializing IPU\n"); 5975dda7945SStefano Babic 59802ae1a18SMarek Vasut ret = mxcfb_probe(gpixfmt, gdisp, gmode); 599e9934f0bSStefano Babic debug("Framebuffer at 0x%x\n", (unsigned int)panel.frameAdrs); 6005dda7945SStefano Babic 601e9934f0bSStefano Babic return (void *)&panel; 602e9934f0bSStefano Babic } 6035dda7945SStefano Babic 60409c8bb26SEric Nelson int ipuv3_fb_init(struct fb_videomode const *mode, 60509c8bb26SEric Nelson uint8_t disp, 60609c8bb26SEric Nelson uint32_t pixfmt) 607e9934f0bSStefano Babic { 608e9934f0bSStefano Babic gmode = mode; 60902ae1a18SMarek Vasut gdisp = disp; 61002ae1a18SMarek Vasut gpixfmt = pixfmt; 611e9934f0bSStefano Babic 612e9934f0bSStefano Babic return 0; 6135dda7945SStefano Babic } 614