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[src/trunk]: src/sys/arch/arm/fdt Add driver for ARM PrimeCell Color LCD cont...
details: https://anonhg.NetBSD.org/src/rev/404671cb9b17
branches: trunk
changeset: 824384:404671cb9b17
user: jmcneill <jmcneill%NetBSD.org@localhost>
date: Sat Jun 03 14:50:39 2017 +0000
description:
Add driver for ARM PrimeCell Color LCD controller (PL111).
diffstat:
sys/arch/arm/fdt/files.fdt | 5 +-
sys/arch/arm/fdt/plfb_fdt.c | 296 ++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 300 insertions(+), 1 deletions(-)
diffs (truncated from 319 to 300 lines):
diff -r c6eb6a1d17f7 -r 404671cb9b17 sys/arch/arm/fdt/files.fdt
--- a/sys/arch/arm/fdt/files.fdt Sat Jun 03 14:49:42 2017 +0000
+++ b/sys/arch/arm/fdt/files.fdt Sat Jun 03 14:50:39 2017 +0000
@@ -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 @@
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
diff -r c6eb6a1d17f7 -r 404671cb9b17 sys/arch/arm/fdt/plfb_fdt.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/arm/fdt/plfb_fdt.c Sat Jun 03 14:50:39 2017 +0000
@@ -0,0 +1,296 @@
+/* $NetBSD: plfb_fdt.c,v 1.1 2017/06/03 14:50:39 jmcneill Exp $ */
+
+/*-
+ * Copyright (c) 2017 Jared McNeill <jmcneill%invisible.ca@localhost>
+ * 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);
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