/*- * Copyright (c) 2016 Justin Hibbits * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "gpio_if.h" #include #include #include "fb_if.h" #define DIU_DESC_1 0x000 /* Plane1 Area Descriptor Pointer Register */ #define DIU_DESC_2 0x004 /* Plane2 Area Descriptor Pointer Register */ #define DIU_DESC_3 0x008 /* Plane3 Area Descriptor Pointer Register */ #define DIU_GAMMA 0x00C /* Gamma Register */ #define DIU_PALETTE 0x010 /* Palette Register */ #define DIU_CURSOR 0x014 /* Cursor Register */ #define DIU_CURS_POS 0x018 /* Cursor Position Register */ #define CURSOR_Y_SHIFT 16 #define CURSOR_X_SHIFT 0 #define DIU_DIU_MODE 0x01C /* DIU4 Mode */ #define DIU_MODE_M 0x7 #define DIU_MODE_S 0 #define DIU_MODE_NORMAL 0x1 #define DIU_MODE_2 0x2 #define DIU_MODE_3 0x3 #define DIU_MODE_COLBAR 0x4 #define DIU_BGND 0x020 /* Background */ #define DIU_BGND_WB 0x024 /* Background Color in write back Mode Register */ #define DIU_DISP_SIZE 0x028 /* Display Size */ #define DELTA_Y_S 16 #define DELTA_X_S 0 #define DIU_WB_SIZE 0x02C /* Write back Plane Size Register */ #define DELTA_Y_WB_S 16 #define DELTA_X_WB_S 0 #define DIU_WB_MEM_ADDR 0x030 /* Address to Store the write back Plane Register */ #define DIU_HSYN_PARA 0x034 /* Horizontal Sync Parameter */ #define BP_H_SHIFT 22 #define PW_H_SHIFT 11 #define FP_H_SHIFT 0 #define DIU_VSYN_PARA 0x038 /* Vertical Sync Parameter */ #define BP_V_SHIFT 22 #define PW_V_SHIFT 11 #define FP_V_SHIFT 0 #define DIU_SYNPOL 0x03C /* Synchronize Polarity */ #define BP_VS (1 << 4) #define BP_HS (1 << 3) #define INV_CS (1 << 2) #define INV_VS (1 << 1) #define INV_HS (1 << 0) #define INV_PDI_VS (1 << 8) /* Polarity of PDI input VSYNC. */ #define INV_PDI_HS (1 << 9) /* Polarity of PDI input HSYNC. */ #define INV_PDI_DE (1 << 10) /* Polarity of PDI input DE. */ #define DIU_THRESHOLD 0x040 /* Threshold */ #define LS_BF_VS_SHIFT 16 #define OUT_BUF_LOW_SHIFT 0 #define DIU_INT_STATUS 0x044 /* Interrupt Status */ #define DIU_INT_MASK 0x048 /* Interrupt Mask */ #define DIU_COLBAR_1 0x04C /* COLBAR_1 */ #define DIU_COLORBARn_R(x) ((x & 0xff) << 16) #define DIU_COLORBARn_G(x) ((x & 0xff) << 8) #define DIU_COLORBARn_B(x) ((x & 0xff) << 0) #define DIU_COLBAR_2 0x050 /* COLBAR_2 */ #define DIU_COLBAR_3 0x054 /* COLBAR_3 */ #define DIU_COLBAR_4 0x058 /* COLBAR_4 */ #define DIU_COLBAR_5 0x05c /* COLBAR_5 */ #define DIU_COLBAR_6 0x060 /* COLBAR_6 */ #define DIU_COLBAR_7 0x064 /* COLBAR_7 */ #define DIU_COLBAR_8 0x068 /* COLBAR_8 */ #define DIU_FILLING 0x06C /* Filling Register */ #define DIU_PLUT 0x070 /* Priority Look Up Table Register */ /* Control Descriptor */ #define DIU_CTRLDESCL(n, m) 0x200 + (0x40 * n) + 0x4 * (m - 1) #define DIU_CTRLDESCLn_1(n) DIU_CTRLDESCL(n, 1) #define DIU_CTRLDESCLn_2(n) DIU_CTRLDESCL(n, 2) #define DIU_CTRLDESCLn_3(n) DIU_CTRLDESCL(n, 3) #define TRANS_SHIFT 20 #define DIU_CTRLDESCLn_4(n) DIU_CTRLDESCL(n, 4) #define BPP_MASK 0xf /* Bit per pixel Mask */ #define BPP_SHIFT 16 /* Bit per pixel Shift */ #define BPP24 0x5 #define EN_LAYER (1 << 31) /* Enable the layer */ #define DIU_CTRLDESCLn_5(n) DIU_CTRLDESCL(n, 5) #define DIU_CTRLDESCLn_6(n) DIU_CTRLDESCL(n, 6) #define DIU_CTRLDESCLn_7(n) DIU_CTRLDESCL(n, 7) #define DIU_CTRLDESCLn_8(n) DIU_CTRLDESCL(n, 8) #define DIU_CTRLDESCLn_9(n) DIU_CTRLDESCL(n, 9) #define NUM_LAYERS 1 struct panel_info { uint32_t panel_width; uint32_t panel_height; uint32_t panel_hbp; uint32_t panel_hpw; uint32_t panel_hfp; uint32_t panel_vbp; uint32_t panel_vpw; uint32_t panel_vfp; uint32_t panel_freq; uint32_t clk_div; }; struct diu_area_descriptor { uint32_t pixel_format; uint32_t bitmap_address; uint32_t source_size; uint32_t aoi_size; uint32_t aoi_offset; uint32_t display_offset; uint32_t chroma_key_max; uint32_t chroma_key_min; uint32_t next_ad_addr; } __aligned(32); struct diu_softc { struct resource *res[2]; void *ih; device_t sc_dev; device_t sc_fbd; /* fbd child */ struct fb_info sc_info; struct panel_info sc_panel; struct diu_area_descriptor *sc_planes[3]; uint8_t *sc_gamma; uint8_t *sc_cursor; }; static struct resource_spec diu_spec[] = { { SYS_RES_MEMORY, 0, RF_ACTIVE }, { SYS_RES_IRQ, 0, RF_ACTIVE }, { -1, 0 } }; static int diu_probe(device_t dev) { if (!ofw_bus_status_okay(dev)) return (ENXIO); if (!ofw_bus_is_compatible(dev, "fsl,diu")) return (ENXIO); device_set_desc(dev, "Freescale Display Interface Unit"); return (BUS_PROBE_DEFAULT); } static void diu_intr(void *arg) { struct diu_softc *sc; int reg; sc = arg; /* Ack interrupts */ reg = bus_read_4(sc->res[0], DIU_INT_STATUS); bus_write_4(sc->res[0], DIU_INT_STATUS, reg); /* TODO interrupt handler */ } static int diu_set_pxclk(device_t dev, unsigned int freq) { phandle_t node; unsigned long bus_freq; uint32_t pxclk_set; uint32_t clkdvd; int res; node = ofw_bus_get_node(device_get_parent(dev)); if ((res = OF_getencprop(node, "bus-frequency", (pcell_t *)&bus_freq, sizeof(bus_freq)) <= 0)) { device_printf(dev, "Unable to get bus frequency\n"); return (ENXIO); } /* freq is in kHz */ freq *= 1000; /* adding freq/2 to round-to-closest */ pxclk_set = min(max((bus_freq + freq/2) / freq, 2), 255) << 16; pxclk_set |= OCP85XX_CLKDVDR_PXCKEN; clkdvd = ccsr_read4(OCP85XX_CLKDVDR); clkdvd &= ~(OCP85XX_CLKDVDR_PXCKEN | OCP85XX_CLKDVDR_PXCKINV | OCP85XX_CLKDVDR_PXCLK_MASK); ccsr_write4(OCP85XX_CLKDVDR, clkdvd); ccsr_write4(OCP85XX_CLKDVDR, clkdvd | pxclk_set); return (0); } static int diu_init(struct diu_softc *sc) { struct panel_info *panel; int reg; panel = &sc->sc_panel; /* Temporarily disable the DIU while configuring */ reg = bus_read_4(sc->res[0], DIU_DIU_MODE); reg &= ~(DIU_MODE_M << DIU_MODE_S); bus_write_4(sc->res[0], DIU_DIU_MODE, reg); if (diu_set_pxclk(sc->sc_dev, panel->panel_freq) < 0) { return (ENXIO); } /* Configure DIU */ /* Need to set these somehow later... */ bus_write_4(sc->res[0], DIU_GAMMA, vtophys(sc->sc_gamma)); bus_write_4(sc->res[0], DIU_CURSOR, vtophys(sc->sc_cursor)); bus_write_4(sc->res[0], DIU_CURS_POS, 0); reg = ((sc->sc_info.fb_height) << DELTA_Y_S); reg |= sc->sc_info.fb_width; bus_write_4(sc->res[0], DIU_DISP_SIZE, reg); reg = (panel->panel_hbp << BP_H_SHIFT); reg |= (panel->panel_hpw << PW_H_SHIFT); reg |= (panel->panel_hfp << FP_H_SHIFT); bus_write_4(sc->res[0], DIU_HSYN_PARA, reg); reg = (panel->panel_vbp << BP_V_SHIFT); reg |= (panel->panel_vpw << PW_V_SHIFT); reg |= (panel->panel_vfp << FP_V_SHIFT); bus_write_4(sc->res[0], DIU_VSYN_PARA, reg); bus_write_4(sc->res[0], DIU_BGND, 0); /* Mask all the interrupts */ bus_write_4(sc->res[0], DIU_INT_MASK, 0x3f); /* Reset all layers */ sc->sc_planes[0] = contigmalloc(sizeof(struct diu_area_descriptor), M_DEVBUF, M_ZERO, 0, BUS_SPACE_MAXADDR_32BIT, 32, 0); bus_write_4(sc->res[0], DIU_DESC_1, vtophys(sc->sc_planes[0])); bus_write_4(sc->res[0], DIU_DESC_2, 0); bus_write_4(sc->res[0], DIU_DESC_3, 0); /* Setup first plane */ /* Area descriptor fields are little endian, so byte swap. */ /* Word 0: Pixel format */ /* Set to 8:8:8:8 ARGB, 4 bytes per pixel, no flip. */ #define MAKE_PXLFMT(as,rs,gs,bs,a,r,g,b,f,s) \ htole32((as << (4 * a)) | (rs << 4 * r) | \ (gs << 4 * g) | (bs << 4 * b) | \ (f << 28) | (s << 16) | \ (a << 25) | (r << 19) | \ (g << 21) | (b << 24)) reg = MAKE_PXLFMT(8, 8, 8, 8, 3, 2, 1, 0, 1, 3); sc->sc_planes[0]->pixel_format = reg; /* Word 1: Bitmap address */ sc->sc_planes[0]->bitmap_address = htole32(sc->sc_info.fb_pbase); /* Word 2: Source size/global alpha */ reg = (sc->sc_info.fb_width | (sc->sc_info.fb_height << 12)); sc->sc_planes[0]->source_size = htole32(reg); /* Word 3: AOI Size */ reg = (sc->sc_info.fb_width | (sc->sc_info.fb_height << 16)); sc->sc_planes[0]->aoi_size = htole32(reg); /* Word 4: AOI Offset */ sc->sc_planes[0]->aoi_offset = 0; /* Word 5: Display offset */ sc->sc_planes[0]->display_offset = 0; /* Word 6: Chroma key max */ sc->sc_planes[0]->chroma_key_max = 0; /* Word 7: Chroma key min */ reg = 255 << 16 | 255 << 8 | 255; sc->sc_planes[0]->chroma_key_min = htole32(reg); /* Word 8: Next AD */ sc->sc_planes[0]->next_ad_addr = 0; /* TODO: derive this from the panel size */ bus_write_4(sc->res[0], DIU_PLUT, 0x1f5f666); /* Enable DIU in normal mode */ reg = bus_read_4(sc->res[0], DIU_DIU_MODE); reg &= ~(DIU_MODE_M << DIU_MODE_S); reg |= (DIU_MODE_NORMAL << DIU_MODE_S); bus_write_4(sc->res[0], DIU_DIU_MODE, reg); return (0); } static int diu_attach(device_t dev) { struct edid_info edid; struct diu_softc *sc; const struct videomode *videomode; void *edid_cells; const char *vm_name; phandle_t node; int h, r, w; int err, i; sc = device_get_softc(dev); sc->sc_dev = dev; if (bus_alloc_resources(dev, diu_spec, sc->res)) { device_printf(dev, "could not allocate resources\n"); return (ENXIO); } node = ofw_bus_get_node(dev); /* Setup interrupt handler */ err = bus_setup_intr(dev, sc->res[1], INTR_TYPE_BIO | INTR_MPSAFE, NULL, diu_intr, sc, &sc->ih); if (err) { device_printf(dev, "Unable to alloc interrupt resource.\n"); return (ENXIO); } /* TODO: Eventually, allow EDID to be dynamically provided. */ if (OF_getprop_alloc(node, "edid", 1, &edid_cells) <= 0) { /* * u-boot uses the environment variable name 'video-mode', so * just use the same name here. Should allow another variable * that better fits our design model, but this is fine. */ if ((vm_name = kern_getenv("video-mode")) == NULL) { device_printf(dev, "No EDID data and no video-mode env set\n"); return (ENXIO); } } if (edid_cells != NULL) { if (edid_parse(edid_cells, &edid) != 0) { device_printf(dev, "Error parsing EDID\n"); OF_prop_free(edid_cells); return (ENXIO); } videomode = edid.edid_preferred_mode; } else { /* Parse video-mode kenv variable. */ if ((err = sscanf(vm_name, "fslfb:%dx%d@%d", &w, &h, &r)) != 3) { device_printf(dev, "Cannot parse video mode: %s\n", vm_name); return (ENXIO); } videomode = pick_mode_by_ref(w, h, r); if (videomode == NULL) { device_printf(dev, "Cannot find mode for %dx%d@%d", w, h, r); return (ENXIO); } } sc->sc_panel.panel_width = videomode->hdisplay; sc->sc_panel.panel_height = videomode->vdisplay; sc->sc_panel.panel_hbp = videomode->hsync_start - videomode->hdisplay; sc->sc_panel.panel_hfp = videomode->htotal - videomode->hsync_end; sc->sc_panel.panel_hpw = videomode->hsync_end - videomode->hsync_start; sc->sc_panel.panel_vbp = videomode->vsync_start - videomode->vdisplay; sc->sc_panel.panel_vfp = videomode->vtotal - videomode->vsync_end; sc->sc_panel.panel_vpw = videomode->vsync_end - videomode->vsync_start; sc->sc_panel.panel_freq = videomode->dot_clock; sc->sc_info.fb_width = sc->sc_panel.panel_width; sc->sc_info.fb_height = sc->sc_panel.panel_height; sc->sc_info.fb_stride = sc->sc_info.fb_width * 4; sc->sc_info.fb_bpp = sc->sc_info.fb_depth = 32; sc->sc_info.fb_size = sc->sc_info.fb_height * sc->sc_info.fb_stride; sc->sc_info.fb_vbase = (intptr_t)contigmalloc(sc->sc_info.fb_size, M_DEVBUF, M_ZERO, 0, BUS_SPACE_MAXADDR_32BIT, PAGE_SIZE, 0); sc->sc_info.fb_pbase = (intptr_t)vtophys(sc->sc_info.fb_vbase); /* Gamma table is 3 consecutive segments of 256 bytes. */ sc->sc_gamma = contigmalloc(3 * 256, M_DEVBUF, 0, 0, BUS_SPACE_MAXADDR_32BIT, PAGE_SIZE, 0); /* Initialize gamma to default */ for (i = 0; i < 3 * 256; i++) sc->sc_gamma[i] = (i % 256); /* Cursor format is 32x32x16bpp */ sc->sc_cursor = contigmalloc(32 * 32 * 2, M_DEVBUF, M_ZERO, 0, BUS_SPACE_MAXADDR_32BIT, PAGE_SIZE, 0); diu_init(sc); sc->sc_info.fb_name = device_get_nameunit(dev); /* Ask newbus to attach framebuffer device to me. */ sc->sc_fbd = device_add_child(dev, "fbd", device_get_unit(dev)); if (sc->sc_fbd == NULL) device_printf(dev, "Can't attach fbd device\n"); if ((err = device_probe_and_attach(sc->sc_fbd)) != 0) { device_printf(dev, "Failed to attach fbd device: %d\n", err); } return (0); } static struct fb_info * diu_fb_getinfo(device_t dev) { struct diu_softc *sc = device_get_softc(dev); return (&sc->sc_info); } static device_method_t diu_methods[] = { DEVMETHOD(device_probe, diu_probe), DEVMETHOD(device_attach, diu_attach), /* Framebuffer service methods */ DEVMETHOD(fb_getinfo, diu_fb_getinfo), { 0, 0 } }; static driver_t diu_driver = { "fb", diu_methods, sizeof(struct diu_softc), }; static devclass_t diu_devclass; DRIVER_MODULE(fb, simplebus, diu_driver, diu_devclass, 0, 0);