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author | br <br@FreeBSD.org> | 2014-02-02 20:25:27 +0000 |
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committer | br <br@FreeBSD.org> | 2014-02-02 20:25:27 +0000 |
commit | 1e1f8dcd24a9b084bbfb824afa47906bea92ac31 (patch) | |
tree | 0bde1c0b26bfaefc4b064087c933f8f64c122525 /sys/arm/freescale/vybrid/vf_dcu4.c | |
parent | cf63b11b176f502a6a01717d40eba8769b700740 (diff) | |
download | FreeBSD-src-1e1f8dcd24a9b084bbfb824afa47906bea92ac31.zip FreeBSD-src-1e1f8dcd24a9b084bbfb824afa47906bea92ac31.tar.gz |
Add driver for Display Control Unit (DCU4).
Diffstat (limited to 'sys/arm/freescale/vybrid/vf_dcu4.c')
-rw-r--r-- | sys/arm/freescale/vybrid/vf_dcu4.c | 359 |
1 files changed, 359 insertions, 0 deletions
diff --git a/sys/arm/freescale/vybrid/vf_dcu4.c b/sys/arm/freescale/vybrid/vf_dcu4.c new file mode 100644 index 0000000..8976427 --- /dev/null +++ b/sys/arm/freescale/vybrid/vf_dcu4.c @@ -0,0 +1,359 @@ +/*- + * Copyright (c) 2014 Ruslan Bukin <br@bsdpad.com> + * 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. + */ + +/* + * Vybrid Family Display Control Unit (DCU4) + * Chapter 55, Vybrid Reference Manual, Rev. 5, 07/2013 + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/bus.h> +#include <sys/kernel.h> +#include <sys/module.h> +#include <sys/malloc.h> +#include <sys/rman.h> +#include <sys/timeet.h> +#include <sys/timetc.h> +#include <sys/watchdog.h> +#include <sys/fbio.h> +#include <sys/consio.h> +#include <sys/eventhandler.h> + +#include <dev/fdt/fdt_common.h> +#include <dev/ofw/openfirm.h> +#include <dev/ofw/ofw_bus.h> +#include <dev/ofw/ofw_bus_subr.h> + +#include <dev/vt/vt.h> +#include <dev/vt/colors/vt_termcolors.h> + +#include <machine/bus.h> +#include <machine/fdt.h> +#include <machine/cpu.h> +#include <machine/intr.h> + +#include "fb_if.h" + +#include <arm/freescale/vybrid/vf_common.h> + +#define DCU_CTRLDESCCURSOR1 0x000 /* Control Descriptor Cursor 1 */ +#define DCU_CTRLDESCCURSOR2 0x004 /* Control Descriptor Cursor 2 */ +#define DCU_CTRLDESCCURSOR3 0x008 /* Control Descriptor Cursor 3 */ +#define DCU_CTRLDESCCURSOR4 0x00C /* Control Descriptor Cursor 4 */ +#define DCU_DCU_MODE 0x010 /* DCU4 Mode */ +#define DCU_MODE_M 0x3 +#define DCU_MODE_S 0 +#define DCU_MODE_NORMAL 0x1 +#define DCU_MODE_TEST 0x2 +#define DCU_MODE_COLBAR 0x3 +#define RASTER_EN (1 << 14) /* Raster scan of pixel data */ +#define DCU_BGND 0x014 /* Background */ +#define DCU_DISP_SIZE 0x018 /* Display Size */ +#define DELTA_M 0x7ff +#define DELTA_Y_S 16 +#define DELTA_X_S 0 +#define DCU_HSYN_PARA 0x01C /* Horizontal Sync Parameter */ +#define BP_H_SHIFT 22 +#define PW_H_SHIFT 11 +#define FP_H_SHIFT 0 +#define DCU_VSYN_PARA 0x020 /* Vertical Sync Parameter */ +#define BP_V_SHIFT 22 +#define PW_V_SHIFT 11 +#define FP_V_SHIFT 0 +#define DCU_SYNPOL 0x024 /* Synchronize Polarity */ +#define INV_HS (1 << 0) +#define INV_VS (1 << 1) +#define DCU_THRESHOLD 0x028 /* Threshold */ +#define LS_BF_VS_SHIFT 16 +#define OUT_BUF_HIGH_SHIFT 8 +#define OUT_BUF_LOW_SHIFT 0 +#define DCU_INT_STATUS 0x02C /* Interrupt Status */ +#define DCU_INT_MASK 0x030 /* Interrupt Mask */ +#define DCU_COLBAR_1 0x034 /* COLBAR_1 */ +#define DCU_COLBAR_2 0x038 /* COLBAR_2 */ +#define DCU_COLBAR_3 0x03C /* COLBAR_3 */ +#define DCU_COLBAR_4 0x040 /* COLBAR_4 */ +#define DCU_COLBAR_5 0x044 /* COLBAR_5 */ +#define DCU_COLBAR_6 0x048 /* COLBAR_6 */ +#define DCU_COLBAR_7 0x04C /* COLBAR_7 */ +#define DCU_COLBAR_8 0x050 /* COLBAR_8 */ +#define DCU_DIV_RATIO 0x054 /* Divide Ratio */ +#define DCU_SIGN_CALC_1 0x058 /* Sign Calculation 1 */ +#define DCU_SIGN_CALC_2 0x05C /* Sign Calculation 2 */ +#define DCU_CRC_VAL 0x060 /* CRC Value */ +#define DCU_PDI_STATUS 0x064 /* PDI Status */ +#define DCU_PDI_STA_MSK 0x068 /* PDI Status Mask */ +#define DCU_PARR_ERR_STATUS1 0x06C /* Parameter Error Status 1 */ +#define DCU_PARR_ERR_STATUS2 0x070 /* Parameter Error Status 2 */ +#define DCU_PARR_ERR_STATUS3 0x07C /* Parameter Error Status 3 */ +#define DCU_MASK_PARR_ERR_ST1 0x080 /* Mask Parameter Error Status 1 */ +#define DCU_MASK_PARR_ERR_ST2 0x084 /* Mask Parameter Error Status 2 */ +#define DCU_MASK_PARR_ERR_ST3 0x090 /* Mask Parameter Error Status 3 */ +#define DCU_THRESHOLD_INP_BUF_1 0x094 /* Threshold Input 1 */ +#define DCU_THRESHOLD_INP_BUF_2 0x098 /* Threshold Input 2 */ +#define DCU_THRESHOLD_INP_BUF_3 0x09C /* Threshold Input 3 */ +#define DCU_LUMA_COMP 0x0A0 /* LUMA Component */ +#define DCU_CHROMA_RED 0x0A4 /* Red Chroma Components */ +#define DCU_CHROMA_GREEN 0x0A8 /* Green Chroma Components */ +#define DCU_CHROMA_BLUE 0x0AC /* Blue Chroma Components */ +#define DCU_CRC_POS 0x0B0 /* CRC Position */ +#define DCU_LYR_INTPOL_EN 0x0B4 /* Layer Interpolation Enable */ +#define DCU_LYR_LUMA_COMP 0x0B8 /* Layer Luminance Component */ +#define DCU_LYR_CHRM_RED 0x0BC /* Layer Chroma Red */ +#define DCU_LYR_CHRM_GRN 0x0C0 /* Layer Chroma Green */ +#define DCU_LYR_CHRM_BLUE 0x0C4 /* Layer Chroma Blue */ +#define DCU_COMP_IMSIZE 0x0C8 /* Compression Image Size */ +#define DCU_UPDATE_MODE 0x0CC /* Update Mode */ +#define READREG (1 << 30) +#define MODE (1 << 31) +#define DCU_UNDERRUN 0x0D0 /* Underrun */ +#define DCU_GLBL_PROTECT 0x100 /* Global Protection */ +#define DCU_SFT_LCK_BIT_L0 0x104 /* Soft Lock Bit Layer 0 */ +#define DCU_SFT_LCK_BIT_L1 0x108 /* Soft Lock Bit Layer 1 */ +#define DCU_SFT_LCK_DISP_SIZE 0x10C /* Soft Lock Display Size */ +#define DCU_SFT_LCK_HS_VS_PARA 0x110 /* Soft Lock Hsync/Vsync Parameter */ +#define DCU_SFT_LCK_POL 0x114 /* Soft Lock POL */ +#define DCU_SFT_LCK_L0_TRANSP 0x118 /* Soft Lock L0 Transparency */ +#define DCU_SFT_LCK_L1_TRANSP 0x11C /* Soft Lock L1 Transparency */ + +/* Control Descriptor */ +#define DCU_CTRLDESCL(n, m) 0x200 + (0x40 * n) + 0x4 * (m - 1) +#define DCU_CTRLDESCLn_1(n) DCU_CTRLDESCL(n, 1) +#define DCU_CTRLDESCLn_2(n) DCU_CTRLDESCL(n, 2) +#define DCU_CTRLDESCLn_3(n) DCU_CTRLDESCL(n, 3) +#define TRANS_SHIFT 20 +#define DCU_CTRLDESCLn_4(n) DCU_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 DCU_CTRLDESCLn_5(n) DCU_CTRLDESCL(n, 5) +#define DCU_CTRLDESCLn_6(n) DCU_CTRLDESCL(n, 6) +#define DCU_CTRLDESCLn_7(n) DCU_CTRLDESCL(n, 7) +#define DCU_CTRLDESCLn_8(n) DCU_CTRLDESCL(n, 8) +#define DCU_CTRLDESCLn_9(n) DCU_CTRLDESCL(n, 9) + +#define DISPLAY_WIDTH 480 +#define DISPLAY_HEIGHT 272 + +struct dcu_softc { + struct resource *res[2]; + bus_space_tag_t bst; + bus_space_handle_t bsh; + void *ih; + device_t dev; + device_t sc_fbd; /* fbd child */ + struct fb_info sc_info; +}; + +static struct resource_spec dcu_spec[] = { + { SYS_RES_MEMORY, 0, RF_ACTIVE }, + { SYS_RES_IRQ, 0, RF_ACTIVE }, + { -1, 0 } +}; + +static int +dcu_probe(device_t dev) +{ + + if (!ofw_bus_status_okay(dev)) + return (ENXIO); + + if (!ofw_bus_is_compatible(dev, "fsl,mvf600-dcu4")) + return (ENXIO); + + device_set_desc(dev, "Vybrid Family Display Control Unit (DCU4)"); + return (BUS_PROBE_DEFAULT); +} + +static void +dcu_intr(void *arg) +{ + struct dcu_softc *sc; + int reg; + + sc = arg; + + /* Ack interrupts */ + reg = READ4(sc, DCU_INT_STATUS); + WRITE4(sc, DCU_INT_STATUS, reg); + + /* TODO interrupt handler */ +} + +static int +dcu_init(struct dcu_softc *sc) +{ + int reg; + + /* Configure DCU */ + reg = ((sc->sc_info.fb_height) << DELTA_Y_S); + reg |= (sc->sc_info.fb_width / 16); + WRITE4(sc, DCU_DISP_SIZE, reg); + + /* TODO: export panel info to FDT */ + + reg = (2 << BP_H_SHIFT); + reg |= (41 << PW_H_SHIFT); + reg |= (2 << FP_H_SHIFT); + WRITE4(sc, DCU_HSYN_PARA, reg); + + reg = (2 << BP_V_SHIFT); + reg |= (10 << PW_V_SHIFT); + reg |= (2 << FP_V_SHIFT); + WRITE4(sc, DCU_VSYN_PARA, reg); + + WRITE4(sc, DCU_BGND, 0); + WRITE4(sc, DCU_DIV_RATIO, 30); + + reg = (INV_VS | INV_HS); + WRITE4(sc, DCU_SYNPOL, reg); + + reg = (0x3 << LS_BF_VS_SHIFT); + reg |= (0x78 << OUT_BUF_HIGH_SHIFT); + reg |= (0 << OUT_BUF_LOW_SHIFT); + WRITE4(sc, DCU_THRESHOLD, reg); + + /* Mask all the interrupts */ + WRITE4(sc, DCU_INT_MASK, 0xffffffff); + + /* Setup first layer */ + reg = (sc->sc_info.fb_width | (sc->sc_info.fb_height << 16)); + WRITE4(sc, DCU_CTRLDESCLn_1(0), reg); + WRITE4(sc, DCU_CTRLDESCLn_2(0), 0x0); + WRITE4(sc, DCU_CTRLDESCLn_3(0), sc->sc_info.fb_pbase); + reg = (BPP24 << BPP_SHIFT); + reg |= EN_LAYER; + reg |= (0xFF << TRANS_SHIFT); /* completely opaque */ + WRITE4(sc, DCU_CTRLDESCLn_4(0), reg); + WRITE4(sc, DCU_CTRLDESCLn_5(0), 0xffffff); + WRITE4(sc, DCU_CTRLDESCLn_6(0), 0x0); + WRITE4(sc, DCU_CTRLDESCLn_7(0), 0x0); + WRITE4(sc, DCU_CTRLDESCLn_8(0), 0x0); + WRITE4(sc, DCU_CTRLDESCLn_9(0), 0x0); + + /* Enable DCU in normal mode */ + reg = READ4(sc, DCU_DCU_MODE); + reg &= ~(DCU_MODE_M << DCU_MODE_S); + reg |= (DCU_MODE_NORMAL << DCU_MODE_S); + reg |= (RASTER_EN); + WRITE4(sc, DCU_DCU_MODE, reg); + WRITE4(sc, DCU_UPDATE_MODE, READREG); + + return (0); +} + +static int +dcu_attach(device_t dev) +{ + struct dcu_softc *sc; + int err; + + sc = device_get_softc(dev); + + if (bus_alloc_resources(dev, dcu_spec, sc->res)) { + device_printf(dev, "could not allocate resources\n"); + return (ENXIO); + } + + /* Memory interface */ + sc->bst = rman_get_bustag(sc->res[0]); + sc->bsh = rman_get_bushandle(sc->res[0]); + + /* Setup interrupt handler */ + err = bus_setup_intr(dev, sc->res[1], INTR_TYPE_BIO | INTR_MPSAFE, + NULL, dcu_intr, sc, &sc->ih); + if (err) { + device_printf(dev, "Unable to alloc interrupt resource.\n"); + return (ENXIO); + } + + /* Bypass timing control (used for raw lcd panels) */ + tcon_bypass(); + + sc->sc_info.fb_width = DISPLAY_WIDTH; + sc->sc_info.fb_height = DISPLAY_HEIGHT; + sc->sc_info.fb_stride = sc->sc_info.fb_width * 3; + sc->sc_info.fb_bpp = sc->sc_info.fb_depth = 24; + 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, ~0, PAGE_SIZE, 0); + sc->sc_info.fb_pbase = (intptr_t)vtophys(sc->sc_info.fb_vbase); + +#if 0 + printf("%dx%d [%d]\n", sc->sc_info.fb_width, sc->sc_info.fb_height, + sc->sc_info.fb_stride); + printf("pbase == 0x%08x\n", sc->sc_info.fb_pbase); +#endif + + memset((int8_t *)sc->sc_info.fb_vbase, 0x0, sc->sc_info.fb_size); + + dcu_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 (device_probe_and_attach(sc->sc_fbd) != 0) { + device_printf(sc->dev, "Failed to attach fbd device\n"); + } + + return (0); +} + +static struct fb_info * +dcu4_fb_getinfo(device_t dev) +{ + struct dcu_softc *sc = device_get_softc(dev); + + return (&sc->sc_info); +} + +static device_method_t dcu_methods[] = { + DEVMETHOD(device_probe, dcu_probe), + DEVMETHOD(device_attach, dcu_attach), + + /* Framebuffer service methods */ + DEVMETHOD(fb_getinfo, dcu4_fb_getinfo), + { 0, 0 } +}; + +static driver_t dcu_driver = { + "fb", + dcu_methods, + sizeof(struct dcu_softc), +}; + +static devclass_t dcu_devclass; + +DRIVER_MODULE(fb, simplebus, dcu_driver, dcu_devclass, 0, 0); |