1a59c06c73
and pass VM_MEMATTR_UNCACHEABLE (no-cache, no-buffer). This fixes screen refreshing problem when data is updated too slowly. Discussed with: ian
412 lines
11 KiB
C
412 lines
11 KiB
C
/*-
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* Copyright (c) 2014 Ruslan Bukin <br@bsdpad.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Samsung Exynos 5 Display Controller
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* Chapter 15, Exynos 5 Dual User's Manual Public Rev 1.00
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/malloc.h>
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#include <sys/rman.h>
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#include <sys/timeet.h>
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#include <sys/timetc.h>
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#include <sys/watchdog.h>
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#include <sys/fbio.h>
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#include <sys/consio.h>
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#include <sys/eventhandler.h>
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#include <sys/gpio.h>
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#include <vm/vm.h>
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#include <vm/vm_extern.h>
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#include <vm/vm_kern.h>
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#include <dev/fdt/fdt_common.h>
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#include <dev/ofw/openfirm.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#include <dev/vt/vt.h>
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#include <dev/vt/colors/vt_termcolors.h>
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#include <arm/samsung/exynos/exynos5_common.h>
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#include "gpio_if.h"
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#include <machine/bus.h>
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#include <machine/fdt.h>
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#include <machine/cpu.h>
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#include <machine/intr.h>
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#include "fb_if.h"
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#define FIMDBYPASS_DISP1 (1 << 15)
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#define VIDCON0 (0x0)
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#define VIDCON0_ENVID (1 << 1)
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#define VIDCON0_ENVID_F (1 << 0)
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#define CLKVAL_F 0xb
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#define CLKVAL_F_OFFSET 6
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#define WINCON0 0x0020
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#define WINCON1 0x0024
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#define WINCON2 0x0028
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#define WINCON3 0x002C
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#define WINCON4 0x0030
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#define ENLOCAL_F (1 << 22)
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#define BPPMODE_F_RGB_16BIT_565 0x5
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#define BPPMODE_F_OFFSET 2
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#define ENWIN_F_ENABLE (1 << 0)
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#define HALF_WORD_SWAP_EN (1 << 16)
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#define SHADOWCON 0x0034
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#define CHANNEL0_EN (1 << 0)
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#define VIDOSD0A 0x0040
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#define VIDOSD0B 0x0044
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#define VIDOSD0C 0x0048
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#define VIDW00ADD0B0 0x00A0
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#define VIDW00ADD0B1 0x00A4
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#define VIDW00ADD0B2 0x20A0
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#define VIDW00ADD1B0 0x00D0
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#define VIDW00ADD1B1 0x00D4
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#define VIDW00ADD1B2 0x20D0
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#define VIDW00ADD2 0x0100
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#define VIDW01ADD2 0x0104
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#define VIDW02ADD2 0x0108
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#define VIDW03ADD2 0x010C
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#define VIDW04ADD2 0x0110
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#define VIDCON1 (0x04)
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#define VIDTCON0 0x0010
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#define VIDTCON1 0x0014
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#define VIDTCON2 0x0018
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#define VIDTCON3 0x001C
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#define VIDINTCON0 0x0130
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#define VIDINTCON1 0x0134
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#define VSYNC_PULSE_WIDTH_VAL 0x3
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#define VSYNC_PULSE_WIDTH_OFFSET 0
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#define V_FRONT_PORCH_VAL 0x3
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#define V_FRONT_PORCH_OFFSET 8
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#define V_BACK_PORCH_VAL 0x3
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#define V_BACK_PORCH_OFFSET 16
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#define HSYNC_PULSE_WIDTH_VAL 0x3
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#define HSYNC_PULSE_WIDTH_OFFSET 0
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#define H_FRONT_PORCH_VAL 0x3
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#define H_FRONT_PORCH_OFFSET 8
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#define H_BACK_PORCH_VAL 0x3
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#define H_BACK_PORCH_OFFSET 16
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#define HOZVAL_OFFSET 0
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#define LINEVAL_OFFSET 11
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#define OSD_RIGHTBOTX_F_OFFSET 11
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#define OSD_RIGHTBOTY_F_OFFSET 0
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#define DPCLKCON 0x27c
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#define DPCLKCON_EN (1 << 1)
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#define DREAD4(_sc, _reg) \
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bus_space_read_4(_sc->bst_disp, _sc->bsh_disp, _reg)
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#define DWRITE4(_sc, _reg, _val) \
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bus_space_write_4(_sc->bst_disp, _sc->bsh_disp, _reg, _val)
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struct panel_info {
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uint32_t width;
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uint32_t height;
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uint32_t h_back_porch;
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uint32_t h_pulse_width;
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uint32_t h_front_porch;
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uint32_t v_back_porch;
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uint32_t v_pulse_width;
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uint32_t v_front_porch;
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uint32_t clk_div;
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uint32_t backlight_pin;
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uint32_t fixvclk;
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uint32_t ivclk;
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uint32_t clkval_f;
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};
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struct fimd_softc {
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struct resource *res[3];
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bus_space_tag_t bst;
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bus_space_handle_t bsh;
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bus_space_tag_t bst_disp;
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bus_space_handle_t bsh_disp;
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bus_space_tag_t bst_sysreg;
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bus_space_handle_t bsh_sysreg;
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void *ih;
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device_t dev;
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device_t sc_fbd; /* fbd child */
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struct fb_info sc_info;
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struct panel_info *panel;
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};
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static struct resource_spec fimd_spec[] = {
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{ SYS_RES_MEMORY, 0, RF_ACTIVE }, /* Timer registers */
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{ SYS_RES_MEMORY, 1, RF_ACTIVE }, /* FIMD */
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{ SYS_RES_MEMORY, 2, RF_ACTIVE }, /* DISP */
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{ -1, 0 }
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};
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static int
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fimd_probe(device_t dev)
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{
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if (!ofw_bus_status_okay(dev))
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return (ENXIO);
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if (!ofw_bus_is_compatible(dev, "exynos,fimd"))
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return (ENXIO);
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device_set_desc(dev, "Samsung Exynos 5 Display Controller");
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return (BUS_PROBE_DEFAULT);
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}
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static int
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get_panel_info(struct fimd_softc *sc, struct panel_info *panel)
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{
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phandle_t node;
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pcell_t dts_value[3];
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int len;
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if ((node = ofw_bus_get_node(sc->dev)) == -1)
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return (ENXIO);
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/* panel size */
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if ((len = OF_getproplen(node, "panel-size")) <= 0)
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return (ENXIO);
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OF_getprop(node, "panel-size", &dts_value, len);
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panel->width = fdt32_to_cpu(dts_value[0]);
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panel->height = fdt32_to_cpu(dts_value[1]);
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/* hsync */
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if ((len = OF_getproplen(node, "panel-hsync")) <= 0)
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return (ENXIO);
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OF_getprop(node, "panel-hsync", &dts_value, len);
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panel->h_back_porch = fdt32_to_cpu(dts_value[0]);
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panel->h_pulse_width = fdt32_to_cpu(dts_value[1]);
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panel->h_front_porch = fdt32_to_cpu(dts_value[2]);
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/* vsync */
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if ((len = OF_getproplen(node, "panel-vsync")) <= 0)
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return (ENXIO);
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OF_getprop(node, "panel-vsync", &dts_value, len);
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panel->v_back_porch = fdt32_to_cpu(dts_value[0]);
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panel->v_pulse_width = fdt32_to_cpu(dts_value[1]);
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panel->v_front_porch = fdt32_to_cpu(dts_value[2]);
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/* clk divider */
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if ((len = OF_getproplen(node, "panel-clk-div")) <= 0)
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return (ENXIO);
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OF_getprop(node, "panel-clk-div", &dts_value, len);
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panel->clk_div = fdt32_to_cpu(dts_value[0]);
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/* backlight pin */
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if ((len = OF_getproplen(node, "panel-backlight-pin")) <= 0)
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return (ENXIO);
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OF_getprop(node, "panel-backlight-pin", &dts_value, len);
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panel->backlight_pin = fdt32_to_cpu(dts_value[0]);
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return (0);
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}
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static int
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fimd_init(struct fimd_softc *sc)
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{
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struct panel_info *panel;
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int reg;
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panel = sc->panel;
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/* fb_init */
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reg = panel->ivclk | panel->fixvclk;
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DWRITE4(sc,VIDCON1,reg);
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reg = (VIDCON0_ENVID | VIDCON0_ENVID_F);
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reg |= (panel->clkval_f << CLKVAL_F_OFFSET);
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WRITE4(sc,VIDCON0,reg);
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reg = (panel->v_pulse_width << VSYNC_PULSE_WIDTH_OFFSET);
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reg |= (panel->v_front_porch << V_FRONT_PORCH_OFFSET);
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reg |= (panel->v_back_porch << V_BACK_PORCH_OFFSET);
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DWRITE4(sc,VIDTCON0,reg);
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reg = (panel->h_pulse_width << HSYNC_PULSE_WIDTH_OFFSET);
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reg |= (panel->h_front_porch << H_FRONT_PORCH_OFFSET);
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reg |= (panel->h_back_porch << H_BACK_PORCH_OFFSET);
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DWRITE4(sc,VIDTCON1,reg);
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reg = ((panel->width - 1) << HOZVAL_OFFSET);
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reg |= ((panel->height - 1) << LINEVAL_OFFSET);
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DWRITE4(sc,VIDTCON2,reg);
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WRITE4(sc,VIDW00ADD0B0, sc->sc_info.fb_pbase);
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WRITE4(sc,VIDW00ADD1B0, sc->sc_info.fb_pbase + sc->sc_info.fb_size);
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WRITE4(sc,VIDW00ADD2, panel->width * 2);
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reg = ((panel->width - 1) << OSD_RIGHTBOTX_F_OFFSET);
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reg |= ((panel->height - 1) << OSD_RIGHTBOTY_F_OFFSET);
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WRITE4(sc,VIDOSD0B,reg);
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reg = panel->width * panel->height;
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WRITE4(sc,VIDOSD0C,reg);
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reg = READ4(sc, SHADOWCON);
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reg |= CHANNEL0_EN;
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reg &= ~(1 << 5); /* disable local path for channel0 */
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WRITE4(sc,SHADOWCON,reg);
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reg = BPPMODE_F_RGB_16BIT_565 << BPPMODE_F_OFFSET;
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reg |= ENWIN_F_ENABLE | HALF_WORD_SWAP_EN; /* Note: swap=0 when ENLOCAL==1 */
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reg &= ~ENLOCAL_F; /* use DMA */
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WRITE4(sc,WINCON0,reg);
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/* Enable DisplayPort Clk */
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WRITE4(sc, DPCLKCON, DPCLKCON_EN);
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return (0);
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}
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static int
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fimd_attach(device_t dev)
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{
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struct panel_info panel;
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struct fimd_softc *sc;
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device_t gpio_dev;
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int reg;
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sc = device_get_softc(dev);
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sc->dev = dev;
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if (bus_alloc_resources(dev, fimd_spec, sc->res)) {
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device_printf(dev, "could not allocate resources\n");
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return (ENXIO);
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}
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/* Memory interface */
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sc->bst = rman_get_bustag(sc->res[0]);
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sc->bsh = rman_get_bushandle(sc->res[0]);
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sc->bst_disp = rman_get_bustag(sc->res[1]);
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sc->bsh_disp = rman_get_bushandle(sc->res[1]);
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sc->bst_sysreg = rman_get_bustag(sc->res[2]);
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sc->bsh_sysreg = rman_get_bushandle(sc->res[2]);
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if (get_panel_info(sc, &panel)) {
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device_printf(dev, "Can't get panel info\n");
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return (ENXIO);
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}
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panel.fixvclk = 0;
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panel.ivclk = 0;
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panel.clkval_f = 2;
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sc->panel = &panel;
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/* Get the GPIO device, we need this to give power to USB */
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gpio_dev = devclass_get_device(devclass_find("gpio"), 0);
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if (gpio_dev == NULL) {
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/* TODO */
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}
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reg = bus_space_read_4(sc->bst_sysreg, sc->bsh_sysreg, 0x214);
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reg |= FIMDBYPASS_DISP1;
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bus_space_write_4(sc->bst_sysreg, sc->bsh_sysreg, 0x214, reg);
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sc->sc_info.fb_width = panel.width;
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sc->sc_info.fb_height = panel.height;
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sc->sc_info.fb_stride = sc->sc_info.fb_width * 2;
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sc->sc_info.fb_bpp = sc->sc_info.fb_depth = 16;
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sc->sc_info.fb_size = sc->sc_info.fb_height * sc->sc_info.fb_stride;
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sc->sc_info.fb_vbase = (intptr_t)kmem_alloc_contig(kernel_arena,
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sc->sc_info.fb_size, M_ZERO, 0, ~0, PAGE_SIZE, 0, VM_MEMATTR_UNCACHEABLE);
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sc->sc_info.fb_pbase = (intptr_t)vtophys(sc->sc_info.fb_vbase);
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#if 0
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printf("%dx%d [%d]\n", sc->sc_info.fb_width, sc->sc_info.fb_height,
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sc->sc_info.fb_stride);
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printf("pbase == 0x%08x\n", sc->sc_info.fb_pbase);
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#endif
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memset((int8_t *)sc->sc_info.fb_vbase, 0x0, sc->sc_info.fb_size);
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fimd_init(sc);
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sc->sc_info.fb_name = device_get_nameunit(dev);
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/* Ask newbus to attach framebuffer device to me. */
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sc->sc_fbd = device_add_child(dev, "fbd", device_get_unit(dev));
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if (sc->sc_fbd == NULL)
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device_printf(dev, "Can't attach fbd device\n");
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if (device_probe_and_attach(sc->sc_fbd) != 0) {
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device_printf(sc->dev, "Failed to attach fbd device\n");
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}
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return (0);
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}
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static struct fb_info *
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fimd_fb_getinfo(device_t dev)
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{
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struct fimd_softc *sc = device_get_softc(dev);
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return (&sc->sc_info);
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}
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static device_method_t fimd_methods[] = {
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DEVMETHOD(device_probe, fimd_probe),
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DEVMETHOD(device_attach, fimd_attach),
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/* Framebuffer service methods */
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DEVMETHOD(fb_getinfo, fimd_fb_getinfo),
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{ 0, 0 }
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};
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static driver_t fimd_driver = {
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"fb",
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fimd_methods,
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sizeof(struct fimd_softc),
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};
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static devclass_t fimd_devclass;
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DRIVER_MODULE(fb, simplebus, fimd_driver, fimd_devclass, 0, 0);
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