Module Name: src Committed By: jmcneill Date: Sat Jun 3 14:50:39 UTC 2017
Modified Files: src/sys/arch/arm/fdt: files.fdt Added Files: src/sys/arch/arm/fdt: plfb_fdt.c Log Message: Add driver for ARM PrimeCell Color LCD controller (PL111). To generate a diff of this commit: cvs rdiff -u -r1.7 -r1.8 src/sys/arch/arm/fdt/files.fdt cvs rdiff -u -r0 -r1.1 src/sys/arch/arm/fdt/plfb_fdt.c Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files.
Modified files: Index: src/sys/arch/arm/fdt/files.fdt diff -u src/sys/arch/arm/fdt/files.fdt:1.7 src/sys/arch/arm/fdt/files.fdt:1.8 --- src/sys/arch/arm/fdt/files.fdt:1.7 Fri Jun 2 14:30:58 2017 +++ src/sys/arch/arm/fdt/files.fdt Sat Jun 3 14:50:39 2017 @@ -1,4 +1,4 @@ -# $NetBSD: files.fdt,v 1.7 2017/06/02 14:30:58 jmcneill Exp $ +# $NetBSD: files.fdt,v 1.8 2017/06/03 14:50:39 jmcneill Exp $ device armfdt { }: bus_space_generic, fdtbus attach armfdt at root with arm_fdt @@ -18,6 +18,9 @@ file arch/arm/fdt/gic_fdt.c attach plcom at fdt with plcom_fdt file arch/arm/fdt/plcom_fdt.c plcom_fdt +attach genfb at fdt with plfb_fdt: fdt_display_timing +file arch/arm/fdt/plfb_fdt.c plfb_fdt + attach plmmc at fdt with plmmc_fdt file arch/arm/fdt/plmmc_fdt.c plmmc_fdt Added files: Index: src/sys/arch/arm/fdt/plfb_fdt.c diff -u /dev/null src/sys/arch/arm/fdt/plfb_fdt.c:1.1 --- /dev/null Sat Jun 3 14:50:39 2017 +++ src/sys/arch/arm/fdt/plfb_fdt.c Sat Jun 3 14:50:39 2017 @@ -0,0 +1,296 @@ +/* $NetBSD: plfb_fdt.c,v 1.1 2017/06/03 14:50:39 jmcneill Exp $ */ + +/*- + * Copyright (c) 2017 Jared McNeill <jmcne...@invisible.ca> + * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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. + */ + +/* + * ARM PrimeCell PL111 framebuffer console driver + */ + +#include <sys/cdefs.h> +__KERNEL_RCSID(0, "$NetBSD: plfb_fdt.c,v 1.1 2017/06/03 14:50:39 jmcneill Exp $"); + +#include <sys/param.h> +#include <sys/types.h> +#include <sys/systm.h> +#include <sys/device.h> +#include <sys/conf.h> +#include <sys/bus.h> +#include <sys/kmem.h> +#include <sys/sysctl.h> + +#include <dev/wsfb/genfbvar.h> + +#include <dev/fdt/fdtvar.h> +#include <dev/fdt/display_timing.h> + +#define LCDTIMING0 0x000 +#define LCDTIMING0_HBP __BITS(31,24) +#define LCDTIMING0_HFP __BITS(23,16) +#define LCDTIMING0_HSW __BITS(15,8) +#define LCDTIMING0_PPL __BITS(7,2) +#define LCDTIMING1 0x004 +#define LCDTIMING1_VBP __BITS(31,24) +#define LCDTIMING1_VFP __BITS(23,16) +#define LCDTIMING1_VSW __BITS(15,10) +#define LCDTIMING1_LPP __BITS(9,0) +#define LCDUPBASE 0x010 +#define LCDLPBASE 0x014 +#define LCDCONTROL 0x018 +#define LCDCONTROL_PWR __BIT(11) +#define LCDCONTROL_BGR __BIT(8) +#define LCDCONTROL_BPP __BITS(3,1) +#define LCDCONTROL_BPP_24 __SHIFTIN(5, LCDCONTROL_BPP) +#define LCDCONTROL_EN __BIT(0) + +#define PLFB_BPP 32 + +struct plfb_softc { + struct genfb_softc sc_gen; + bus_space_tag_t sc_bst; + bus_space_handle_t sc_bsh; + int sc_phandle; + + bus_space_handle_t sc_vram_bsh; + bus_addr_t sc_vram_addr; + bus_size_t sc_vram_size; + uintptr_t sc_vram; + + uint32_t sc_wstype; +}; + +static int plfb_match(device_t, cfdata_t, void *); +static void plfb_attach(device_t, device_t, void *); + +static int plfb_ioctl(void *, void *, u_long, void *, int, lwp_t *); +static paddr_t plfb_mmap(void *, void *, off_t, int); +static bool plfb_shutdown(device_t, int); + +static void plfb_init(struct plfb_softc *); + +static const char * const compatible[] = { + "arm,pl111", + NULL +}; + +CFATTACH_DECL_NEW(plfb_fdt, sizeof(struct plfb_softc), + plfb_match, plfb_attach, NULL, NULL); + +#define FB_READ(sc, reg) \ + bus_space_read_4((sc)->sc_bst, (sc)->sc_bsh, (reg)) +#define FB_WRITE(sc, reg, val) \ + bus_space_write_4((sc)->sc_bst, (sc)->sc_bsh, (reg), (val)) + +static int +plfb_match(device_t parent, cfdata_t match, void *aux) +{ + struct fdt_attach_args * const faa = aux; + + return of_match_compatible(faa->faa_phandle, compatible); +} + +static void +plfb_attach(device_t parent, device_t self, void *aux) +{ + struct plfb_softc *sc = device_private(self); + prop_dictionary_t dict = device_properties(self); + struct fdt_attach_args * const faa = aux; + const int phandle = faa->faa_phandle; + struct genfb_ops ops; + struct clk *clk; + bus_addr_t addr; + bus_size_t size; + + sc->sc_gen.sc_dev = self; + sc->sc_phandle = phandle; + sc->sc_bst = faa->faa_bst; + + /* Enable clocks */ + for (int i = 0; (clk = fdtbus_clock_get_index(phandle, i)); i++) + if (clk_enable(clk) != 0) { + aprint_error(": couldn't enable clock #%d\n", i); + return; + } + + /* Map CLCD registers */ + if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) { + aprint_error(": missing 'reg' property\n"); + return; + } + if (bus_space_map(sc->sc_bst, addr, size, 0, &sc->sc_bsh)) { + aprint_error(": couldn't map device\n"); + return; + } + + /* Map VRAM */ + const int vram_phandle = fdtbus_get_phandle(phandle, "memory-region"); + if (vram_phandle == -1) { + /* + * The 'memory-region' property is optional. If + * absent, we can allocate FB from main RAM. (TODO) + */ + aprint_error(": missing 'memory-region' property\n"); + return; + } + if (fdtbus_get_reg(vram_phandle, 0, &sc->sc_vram_addr, + &sc->sc_vram_size) != 0) { + aprint_error(": missing 'reg' property on memory-region\n"); + return; + } + if (bus_space_map(sc->sc_bst, sc->sc_vram_addr, sc->sc_vram_size, + BUS_SPACE_MAP_LINEAR, &sc->sc_vram_bsh)) { + aprint_error(": couldn't map vram\n"); + return; + } + sc->sc_vram = (uintptr_t)bus_space_vaddr(sc->sc_bst, sc->sc_vram_bsh); + + plfb_init(sc); + + sc->sc_wstype = WSDISPLAY_TYPE_PLFB; + prop_dictionary_set_bool(dict, "is_console", false); + + genfb_init(&sc->sc_gen); + + if (sc->sc_gen.sc_width == 0 || + sc->sc_gen.sc_fbsize == 0) { + aprint_normal(": disabled\n"); + return; + } + + pmf_device_register1(self, NULL, NULL, plfb_shutdown); + + memset(&ops, 0, sizeof(ops)); + ops.genfb_ioctl = plfb_ioctl; + ops.genfb_mmap = plfb_mmap; + + aprint_naive("\n"); + aprint_normal("\n"); + + genfb_attach(&sc->sc_gen, &ops); +} + +static int +plfb_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, lwp_t *l) +{ + struct plfb_softc *sc = v; + struct wsdisplayio_bus_id *busid; + + switch (cmd) { + case WSDISPLAYIO_GTYPE: + *(u_int *)data = sc->sc_wstype; + return 0; + case WSDISPLAYIO_GET_BUSID: + busid = data; + busid->bus_type = WSDISPLAYIO_BUS_SOC; + return 0; + case WSDISPLAYIO_GET_FBINFO: + { + struct wsdisplayio_fbinfo *fbi = data; + struct rasops_info *ri = &sc->sc_gen.vd.active->scr_ri; + + return wsdisplayio_get_fbinfo(ri, fbi); + } + default: + return EPASSTHROUGH; + } +} + +static paddr_t +plfb_mmap(void *v, void *vs, off_t offset, int prot) +{ + struct plfb_softc *sc = v; + + if (offset < 0 || offset >= sc->sc_vram_size) + return -1; + + return bus_space_mmap(sc->sc_bst, sc->sc_vram_addr, offset, prot, + BUS_SPACE_MAP_LINEAR | BUS_SPACE_MAP_PREFETCHABLE); +} + +static bool +plfb_shutdown(device_t self, int flags) +{ + genfb_enable_polling(self); + return true; +} + +static int +plfb_get_panel_timing(struct plfb_softc *sc, struct display_timing *timing) +{ + int panel, panel_timing; + + panel = of_find_firstchild_byname(sc->sc_phandle, "panel"); + if (panel <= 0) + return ENOENT; + panel_timing = of_find_firstchild_byname(panel, "panel-timing"); + if (panel_timing <= 0) + return ENOENT; + + return display_timing_parse(panel_timing, timing); +} + +static void +plfb_init(struct plfb_softc *sc) +{ + prop_dictionary_t dict = device_properties(sc->sc_gen.sc_dev); + struct display_timing timing; + + if (plfb_get_panel_timing(sc, &timing) != 0) { + aprint_error_dev(sc->sc_gen.sc_dev, + "couldn't get panel timings\n"); + return; + } + + prop_dictionary_set_uint32(dict, "width", timing.hactive); + prop_dictionary_set_uint32(dict, "height", timing.vactive); + prop_dictionary_set_uint8(dict, "depth", PLFB_BPP); + prop_dictionary_set_bool(dict, "dblscan", 0); + prop_dictionary_set_bool(dict, "interlace", 0); + prop_dictionary_set_uint16(dict, "linebytes", timing.hactive * (PLFB_BPP / 8)); + prop_dictionary_set_uint32(dict, "address", sc->sc_vram_addr); + prop_dictionary_set_uint32(dict, "virtual_address", sc->sc_vram); + + /* FB base address */ + FB_WRITE(sc, LCDUPBASE, sc->sc_vram_addr); + FB_WRITE(sc, LCDLPBASE, 0); + + /* CRTC timings */ + FB_WRITE(sc, LCDTIMING0, + __SHIFTIN(timing.hback_porch - 1, LCDTIMING0_HBP) | + __SHIFTIN(timing.hfront_porch - 1, LCDTIMING0_HFP) | + __SHIFTIN(timing.hsync_len - 1, LCDTIMING0_HSW) | + __SHIFTIN((timing.hactive / 16) - 1, LCDTIMING0_PPL)); + FB_WRITE(sc, LCDTIMING1, + __SHIFTIN(timing.vback_porch - 1, LCDTIMING1_VBP) | + __SHIFTIN(timing.vfront_porch - 1, LCDTIMING1_VFP) | + __SHIFTIN(timing.vsync_len - 1, LCDTIMING1_VSW) | + __SHIFTIN(timing.vactive - 1, LCDTIMING1_LPP)); + + /* Configure and enable CLCD */ + FB_WRITE(sc, LCDCONTROL, + LCDCONTROL_PWR | LCDCONTROL_EN | LCDCONTROL_BPP_24 | + LCDCONTROL_BGR); +}