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authorVijay Kumar Banerjee <vijaykumar9597@gmail.com>2019-08-04 01:49:44 +0530
committerChristian Mauderer <oss@c-mauderer.de>2019-08-11 15:57:54 +0200
commit7adbe5b0bd87b3946b7f274fe8924168133333c3 (patch)
tree0694820bd51edde561c0d0ff06b201e3f2b01c2b
parentd7c01f45691d4289c5b8d5cafe9e2776b03731ea (diff)
downloadrtems-libbsd-7adbe5b0bd87b3946b7f274fe8924168133333c3.tar.bz2
am335x display drivers: Import from FreeBSD
-rw-r--r--freebsd/sys/arm/ti/am335x/am335x_ecap.c202
-rw-r--r--freebsd/sys/arm/ti/am335x/am335x_lcd.c1085
-rw-r--r--freebsd/sys/arm/ti/am335x/am335x_lcd.h60
-rw-r--r--freebsd/sys/arm/ti/am335x/am335x_pwm.h35
-rw-r--r--freebsd/sys/arm/ti/am335x/am335x_pwmss.c165
5 files changed, 1547 insertions, 0 deletions
diff --git a/freebsd/sys/arm/ti/am335x/am335x_ecap.c b/freebsd/sys/arm/ti/am335x/am335x_ecap.c
new file mode 100644
index 00000000..9ebc51db
--- /dev/null
+++ b/freebsd/sys/arm/ti/am335x/am335x_ecap.c
@@ -0,0 +1,202 @@
+#include <machine/rtems-bsd-kernel-space.h>
+
+/*-
+ * Copyright (c) 2013 Oleksandr Tymoshenko <gonzo@freebsd.org>
+ * 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 <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/kernel.h>
+#include <sys/limits.h>
+#include <sys/lock.h>
+#include <sys/module.h>
+#include <sys/mutex.h>
+#include <rtems/bsd/sys/resource.h>
+#include <sys/rman.h>
+#include <sys/sysctl.h>
+
+#include <machine/bus.h>
+
+#include <dev/ofw/openfirm.h>
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include "am335x_pwm.h"
+
+#define ECAP_TSCTR 0x00
+#define ECAP_CAP1 0x08
+#define ECAP_CAP2 0x0C
+#define ECAP_CAP3 0x10
+#define ECAP_CAP4 0x14
+#define ECAP_ECCTL2 0x2A
+#define ECCTL2_MODE_APWM (1 << 9)
+#define ECCTL2_SYNCO_SEL (3 << 6)
+#define ECCTL2_TSCTRSTOP_FREERUN (1 << 4)
+
+#define ECAP_READ2(_sc, reg) bus_read_2((_sc)->sc_mem_res, reg);
+#define ECAP_WRITE2(_sc, reg, value) \
+ bus_write_2((_sc)->sc_mem_res, reg, value);
+#define ECAP_READ4(_sc, reg) bus_read_4((_sc)->sc_mem_res, reg);
+#define ECAP_WRITE4(_sc, reg, value) \
+ bus_write_4((_sc)->sc_mem_res, reg, value);
+
+#define PWM_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx)
+#define PWM_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx)
+#define PWM_LOCK_INIT(_sc) mtx_init(&(_sc)->sc_mtx, \
+ device_get_nameunit(_sc->sc_dev), "am335x_ecap softc", MTX_DEF)
+#define PWM_LOCK_DESTROY(_sc) mtx_destroy(&(_sc)->sc_mtx)
+
+static device_probe_t am335x_ecap_probe;
+static device_attach_t am335x_ecap_attach;
+static device_detach_t am335x_ecap_detach;
+
+struct am335x_ecap_softc {
+ device_t sc_dev;
+ struct mtx sc_mtx;
+ struct resource *sc_mem_res;
+ int sc_mem_rid;
+};
+
+static device_method_t am335x_ecap_methods[] = {
+ DEVMETHOD(device_probe, am335x_ecap_probe),
+ DEVMETHOD(device_attach, am335x_ecap_attach),
+ DEVMETHOD(device_detach, am335x_ecap_detach),
+
+ DEVMETHOD_END
+};
+
+static driver_t am335x_ecap_driver = {
+ "am335x_ecap",
+ am335x_ecap_methods,
+ sizeof(struct am335x_ecap_softc),
+};
+
+static devclass_t am335x_ecap_devclass;
+
+/*
+ * API function to set period/duty cycles for ECAPx
+ */
+int
+am335x_pwm_config_ecap(int unit, int period, int duty)
+{
+ device_t dev;
+ struct am335x_ecap_softc *sc;
+ uint16_t reg;
+
+ dev = devclass_get_device(am335x_ecap_devclass, unit);
+ if (dev == NULL)
+ return (ENXIO);
+
+ if (duty > period)
+ return (EINVAL);
+
+ if (period == 0)
+ return (EINVAL);
+
+ sc = device_get_softc(dev);
+ PWM_LOCK(sc);
+
+ reg = ECAP_READ2(sc, ECAP_ECCTL2);
+ reg |= ECCTL2_MODE_APWM | ECCTL2_TSCTRSTOP_FREERUN | ECCTL2_SYNCO_SEL;
+ ECAP_WRITE2(sc, ECAP_ECCTL2, reg);
+
+ /* CAP3 in APWM mode is APRD shadow register */
+ ECAP_WRITE4(sc, ECAP_CAP3, period - 1);
+
+ /* CAP4 in APWM mode is ACMP shadow register */
+ ECAP_WRITE4(sc, ECAP_CAP4, duty);
+ /* Restart counter */
+ ECAP_WRITE4(sc, ECAP_TSCTR, 0);
+
+ PWM_UNLOCK(sc);
+
+ return (0);
+}
+
+static int
+am335x_ecap_probe(device_t dev)
+{
+
+ if (!ofw_bus_status_okay(dev))
+ return (ENXIO);
+
+ if (!ofw_bus_is_compatible(dev, "ti,am33xx-ecap"))
+ return (ENXIO);
+
+ device_set_desc(dev, "AM335x eCAP");
+
+ return (BUS_PROBE_DEFAULT);
+}
+
+static int
+am335x_ecap_attach(device_t dev)
+{
+ struct am335x_ecap_softc *sc;
+
+ sc = device_get_softc(dev);
+ sc->sc_dev = dev;
+
+ PWM_LOCK_INIT(sc);
+
+ sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
+ &sc->sc_mem_rid, RF_ACTIVE);
+ if (sc->sc_mem_res == NULL) {
+ device_printf(dev, "cannot allocate memory resources\n");
+ goto fail;
+ }
+
+ return (0);
+
+fail:
+ PWM_LOCK_DESTROY(sc);
+ return (ENXIO);
+}
+
+static int
+am335x_ecap_detach(device_t dev)
+{
+ struct am335x_ecap_softc *sc;
+
+ sc = device_get_softc(dev);
+
+ PWM_LOCK(sc);
+ if (sc->sc_mem_res)
+ bus_release_resource(dev, SYS_RES_MEMORY,
+ sc->sc_mem_rid, sc->sc_mem_res);
+ PWM_UNLOCK(sc);
+
+ PWM_LOCK_DESTROY(sc);
+
+
+ return (0);
+}
+
+DRIVER_MODULE(am335x_ecap, am335x_pwmss, am335x_ecap_driver, am335x_ecap_devclass, 0, 0);
+MODULE_VERSION(am335x_ecap, 1);
+MODULE_DEPEND(am335x_ecap, am335x_pwmss, 1, 1, 1);
diff --git a/freebsd/sys/arm/ti/am335x/am335x_lcd.c b/freebsd/sys/arm/ti/am335x/am335x_lcd.c
new file mode 100644
index 00000000..7c0dd63e
--- /dev/null
+++ b/freebsd/sys/arm/ti/am335x/am335x_lcd.c
@@ -0,0 +1,1085 @@
+#include <machine/rtems-bsd-kernel-space.h>
+
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright 2013 Oleksandr Tymoshenko <gonzo@freebsd.org>
+ * 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 <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <rtems/bsd/local/opt_syscons.h>
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/clock.h>
+#include <sys/eventhandler.h>
+#include <sys/time.h>
+#include <sys/bus.h>
+#include <sys/lock.h>
+#include <sys/mutex.h>
+#include <rtems/bsd/sys/resource.h>
+#include <sys/rman.h>
+#include <sys/sysctl.h>
+#include <vm/vm.h>
+#include <vm/pmap.h>
+#include <sys/fbio.h>
+#include <sys/consio.h>
+
+#include <machine/bus.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/videomode/videomode.h>
+#include <dev/videomode/edidvar.h>
+
+#include <dev/fb/fbreg.h>
+#ifdef DEV_SC
+#include <dev/syscons/syscons.h>
+#else /* VT */
+#include <dev/vt/vt.h>
+#endif
+
+#include <arm/ti/ti_prcm.h>
+#include <arm/ti/ti_scm.h>
+
+#include "am335x_lcd.h"
+#include "am335x_pwm.h"
+
+#include <rtems/bsd/local/fb_if.h>
+#include <rtems/bsd/local/hdmi_if.h>
+
+#define LCD_PID 0x00
+#define LCD_CTRL 0x04
+#define CTRL_DIV_MASK 0xff
+#define CTRL_DIV_SHIFT 8
+#define CTRL_AUTO_UFLOW_RESTART (1 << 1)
+#define CTRL_RASTER_MODE 1
+#define CTRL_LIDD_MODE 0
+#define LCD_LIDD_CTRL 0x0C
+#define LCD_LIDD_CS0_CONF 0x10
+#define LCD_LIDD_CS0_ADDR 0x14
+#define LCD_LIDD_CS0_DATA 0x18
+#define LCD_LIDD_CS1_CONF 0x1C
+#define LCD_LIDD_CS1_ADDR 0x20
+#define LCD_LIDD_CS1_DATA 0x24
+#define LCD_RASTER_CTRL 0x28
+#define RASTER_CTRL_TFT24_UNPACKED (1 << 26)
+#define RASTER_CTRL_TFT24 (1 << 25)
+#define RASTER_CTRL_STN565 (1 << 24)
+#define RASTER_CTRL_TFTPMAP (1 << 23)
+#define RASTER_CTRL_NIBMODE (1 << 22)
+#define RASTER_CTRL_PALMODE_SHIFT 20
+#define PALETTE_PALETTE_AND_DATA 0x00
+#define PALETTE_PALETTE_ONLY 0x01
+#define PALETTE_DATA_ONLY 0x02
+#define RASTER_CTRL_REQDLY_SHIFT 12
+#define RASTER_CTRL_MONO8B (1 << 9)
+#define RASTER_CTRL_RBORDER (1 << 8)
+#define RASTER_CTRL_LCDTFT (1 << 7)
+#define RASTER_CTRL_LCDBW (1 << 1)
+#define RASTER_CTRL_LCDEN (1 << 0)
+#define LCD_RASTER_TIMING_0 0x2C
+#define RASTER_TIMING_0_HBP_SHIFT 24
+#define RASTER_TIMING_0_HFP_SHIFT 16
+#define RASTER_TIMING_0_HSW_SHIFT 10
+#define RASTER_TIMING_0_PPLLSB_SHIFT 4
+#define RASTER_TIMING_0_PPLMSB_SHIFT 3
+#define LCD_RASTER_TIMING_1 0x30
+#define RASTER_TIMING_1_VBP_SHIFT 24
+#define RASTER_TIMING_1_VFP_SHIFT 16
+#define RASTER_TIMING_1_VSW_SHIFT 10
+#define RASTER_TIMING_1_LPP_SHIFT 0
+#define LCD_RASTER_TIMING_2 0x34
+#define RASTER_TIMING_2_HSWHI_SHIFT 27
+#define RASTER_TIMING_2_LPP_B10_SHIFT 26
+#define RASTER_TIMING_2_PHSVS (1 << 25)
+#define RASTER_TIMING_2_PHSVS_RISE (1 << 24)
+#define RASTER_TIMING_2_PHSVS_FALL (0 << 24)
+#define RASTER_TIMING_2_IOE (1 << 23)
+#define RASTER_TIMING_2_IPC (1 << 22)
+#define RASTER_TIMING_2_IHS (1 << 21)
+#define RASTER_TIMING_2_IVS (1 << 20)
+#define RASTER_TIMING_2_ACBI_SHIFT 16
+#define RASTER_TIMING_2_ACB_SHIFT 8
+#define RASTER_TIMING_2_HBPHI_SHIFT 4
+#define RASTER_TIMING_2_HFPHI_SHIFT 0
+#define LCD_RASTER_SUBPANEL 0x38
+#define LCD_RASTER_SUBPANEL2 0x3C
+#define LCD_LCDDMA_CTRL 0x40
+#define LCDDMA_CTRL_DMA_MASTER_PRIO_SHIFT 16
+#define LCDDMA_CTRL_TH_FIFO_RDY_SHIFT 8
+#define LCDDMA_CTRL_BURST_SIZE_SHIFT 4
+#define LCDDMA_CTRL_BYTES_SWAP (1 << 3)
+#define LCDDMA_CTRL_BE (1 << 1)
+#define LCDDMA_CTRL_FB0_ONLY 0
+#define LCDDMA_CTRL_FB0_FB1 (1 << 0)
+#define LCD_LCDDMA_FB0_BASE 0x44
+#define LCD_LCDDMA_FB0_CEILING 0x48
+#define LCD_LCDDMA_FB1_BASE 0x4C
+#define LCD_LCDDMA_FB1_CEILING 0x50
+#define LCD_SYSCONFIG 0x54
+#define SYSCONFIG_STANDBY_FORCE (0 << 4)
+#define SYSCONFIG_STANDBY_NONE (1 << 4)
+#define SYSCONFIG_STANDBY_SMART (2 << 4)
+#define SYSCONFIG_IDLE_FORCE (0 << 2)
+#define SYSCONFIG_IDLE_NONE (1 << 2)
+#define SYSCONFIG_IDLE_SMART (2 << 2)
+#define LCD_IRQSTATUS_RAW 0x58
+#define LCD_IRQSTATUS 0x5C
+#define LCD_IRQENABLE_SET 0x60
+#define LCD_IRQENABLE_CLEAR 0x64
+#define IRQ_EOF1 (1 << 9)
+#define IRQ_EOF0 (1 << 8)
+#define IRQ_PL (1 << 6)
+#define IRQ_FUF (1 << 5)
+#define IRQ_ACB (1 << 3)
+#define IRQ_SYNC_LOST (1 << 2)
+#define IRQ_RASTER_DONE (1 << 1)
+#define IRQ_FRAME_DONE (1 << 0)
+#define LCD_END_OF_INT_IND 0x68
+#define LCD_CLKC_ENABLE 0x6C
+#define CLKC_ENABLE_DMA (1 << 2)
+#define CLKC_ENABLE_LDID (1 << 1)
+#define CLKC_ENABLE_CORE (1 << 0)
+#define LCD_CLKC_RESET 0x70
+#define CLKC_RESET_MAIN (1 << 3)
+#define CLKC_RESET_DMA (1 << 2)
+#define CLKC_RESET_LDID (1 << 1)
+#define CLKC_RESET_CORE (1 << 0)
+
+#define LCD_LOCK(_sc) mtx_lock(&(_sc)->sc_mtx)
+#define LCD_UNLOCK(_sc) mtx_unlock(&(_sc)->sc_mtx)
+#define LCD_LOCK_INIT(_sc) mtx_init(&(_sc)->sc_mtx, \
+ device_get_nameunit(_sc->sc_dev), "am335x_lcd", MTX_DEF)
+#define LCD_LOCK_DESTROY(_sc) mtx_destroy(&(_sc)->sc_mtx);
+
+#define LCD_READ4(_sc, reg) bus_read_4((_sc)->sc_mem_res, reg);
+#define LCD_WRITE4(_sc, reg, value) \
+ bus_write_4((_sc)->sc_mem_res, reg, value);
+
+/* Backlight is controlled by eCAS interface on PWM unit 0 */
+#define PWM_UNIT 0
+#define PWM_PERIOD 100
+
+#define MODE_HBP(mode) ((mode)->htotal - (mode)->hsync_end)
+#define MODE_HFP(mode) ((mode)->hsync_start - (mode)->hdisplay)
+#define MODE_HSW(mode) ((mode)->hsync_end - (mode)->hsync_start)
+#define MODE_VBP(mode) ((mode)->vtotal - (mode)->vsync_end)
+#define MODE_VFP(mode) ((mode)->vsync_start - (mode)->vdisplay)
+#define MODE_VSW(mode) ((mode)->vsync_end - (mode)->vsync_start)
+
+#define MAX_PIXEL_CLOCK 126000
+#define MAX_BANDWIDTH (1280*1024*60)
+
+struct am335x_lcd_softc {
+ device_t sc_dev;
+ struct fb_info sc_fb_info;
+ struct resource *sc_mem_res;
+ struct resource *sc_irq_res;
+ void *sc_intr_hl;
+ struct mtx sc_mtx;
+ int sc_backlight;
+ struct sysctl_oid *sc_oid;
+
+ struct panel_info sc_panel;
+
+ /* Framebuffer */
+ bus_dma_tag_t sc_dma_tag;
+ bus_dmamap_t sc_dma_map;
+ size_t sc_fb_size;
+ bus_addr_t sc_fb_phys;
+ uint8_t *sc_fb_base;
+
+ /* HDMI framer */
+ phandle_t sc_hdmi_framer;
+ eventhandler_tag sc_hdmi_evh;
+};
+
+static void
+am335x_fb_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int err)
+{
+ bus_addr_t *addr;
+
+ if (err)
+ return;
+
+ addr = (bus_addr_t*)arg;
+ *addr = segs[0].ds_addr;
+}
+
+static uint32_t
+am335x_lcd_calc_divisor(uint32_t reference, uint32_t freq)
+{
+ uint32_t div, i;
+ uint32_t delta, min_delta;
+
+ min_delta = freq;
+ div = 255;
+
+ /* Raster mode case: divisors are in range from 2 to 255 */
+ for (i = 2; i < 255; i++) {
+ delta = abs(reference/i - freq);
+ if (delta < min_delta) {
+ div = i;
+ min_delta = delta;
+ }
+ }
+
+ return (div);
+}
+
+static int
+am335x_lcd_sysctl_backlight(SYSCTL_HANDLER_ARGS)
+{
+ struct am335x_lcd_softc *sc = (struct am335x_lcd_softc*)arg1;
+ int error;
+ int backlight;
+
+ backlight = sc->sc_backlight;
+ error = sysctl_handle_int(oidp, &backlight, 0, req);
+
+ if (error != 0 || req->newptr == NULL)
+ return (error);
+
+ if (backlight < 0)
+ backlight = 0;
+ if (backlight > 100)
+ backlight = 100;
+
+ LCD_LOCK(sc);
+ error = am335x_pwm_config_ecap(PWM_UNIT, PWM_PERIOD,
+ backlight*PWM_PERIOD/100);
+ if (error == 0)
+ sc->sc_backlight = backlight;
+ LCD_UNLOCK(sc);
+
+ return (error);
+}
+
+static uint32_t
+am335x_mode_vrefresh(const struct videomode *mode)
+{
+ uint32_t refresh;
+
+ /* Calculate vertical refresh rate */
+ refresh = (mode->dot_clock * 1000 / mode->htotal);
+ refresh = (refresh + mode->vtotal / 2) / mode->vtotal;
+
+ if (mode->flags & VID_INTERLACE)
+ refresh *= 2;
+ if (mode->flags & VID_DBLSCAN)
+ refresh /= 2;
+
+ return refresh;
+}
+
+static int
+am335x_mode_is_valid(const struct videomode *mode)
+{
+ uint32_t hbp, hfp, hsw;
+ uint32_t vbp, vfp, vsw;
+
+ if (mode->dot_clock > MAX_PIXEL_CLOCK)
+ return (0);
+
+ if (mode->hdisplay & 0xf)
+ return (0);
+
+ if (mode->vdisplay > 2048)
+ return (0);
+
+ /* Check ranges for timing parameters */
+ hbp = MODE_HBP(mode) - 1;
+ hfp = MODE_HFP(mode) - 1;
+ hsw = MODE_HSW(mode) - 1;
+ vbp = MODE_VBP(mode);
+ vfp = MODE_VFP(mode);
+ vsw = MODE_VSW(mode) - 1;
+
+ if (hbp > 0x3ff)
+ return (0);
+ if (hfp > 0x3ff)
+ return (0);
+ if (hsw > 0x3ff)
+ return (0);
+
+ if (vbp > 0xff)
+ return (0);
+ if (vfp > 0xff)
+ return (0);
+ if (vsw > 0x3f)
+ return (0);
+ if (mode->vdisplay*mode->hdisplay*am335x_mode_vrefresh(mode)
+ > MAX_BANDWIDTH)
+ return (0);
+
+ return (1);
+}
+
+static void
+am335x_read_hdmi_property(device_t dev)
+{
+ phandle_t node, xref;
+ phandle_t endpoint;
+ phandle_t hdmi_xref;
+ struct am335x_lcd_softc *sc;
+
+ sc = device_get_softc(dev);
+ node = ofw_bus_get_node(dev);
+ sc->sc_hdmi_framer = 0;
+
+ /*
+ * Old FreeBSD way of referencing to HDMI framer
+ */
+ if (OF_getencprop(node, "hdmi", &hdmi_xref, sizeof(hdmi_xref)) != -1) {
+ sc->sc_hdmi_framer = hdmi_xref;
+ return;
+ }
+
+ /*
+ * Use bindings described in Linux docs:
+ * bindings/media/video-interfaces.txt
+ * We assume that the only endpoint in LCDC node
+ * is HDMI framer.
+ */
+ node = ofw_bus_find_child(node, "port");
+
+ /* No media bindings */
+ if (node == 0)
+ return;
+
+ for (endpoint = OF_child(node); endpoint != 0; endpoint = OF_peer(endpoint)) {
+ if (OF_getencprop(endpoint, "remote-endpoint", &xref, sizeof(xref)) != -1) {
+ /* port/port@0/endpoint@0 */
+ node = OF_node_from_xref(xref);
+ /* port/port@0 */
+ node = OF_parent(node);
+ /* port */
+ node = OF_parent(node);
+ /* actual owner of port, in our case HDMI framer */
+ sc->sc_hdmi_framer = OF_xref_from_node(OF_parent(node));
+ if (sc->sc_hdmi_framer != 0)
+ return;
+ }
+ }
+}
+
+static int
+am335x_read_property(device_t dev, phandle_t node, const char *name, uint32_t *val)
+{
+ pcell_t cell;
+
+ if ((OF_getencprop(node, name, &cell, sizeof(cell))) <= 0) {
+ device_printf(dev, "missing '%s' attribute in LCD panel info\n",
+ name);
+ return (ENXIO);
+ }
+
+ *val = cell;
+
+ return (0);
+}
+
+static int
+am335x_read_timing(device_t dev, phandle_t node, struct panel_info *panel)
+{
+ int error;
+ phandle_t timings_node, timing_node, native;
+
+ timings_node = ofw_bus_find_child(node, "display-timings");
+ if (timings_node == 0) {
+ device_printf(dev, "no \"display-timings\" node\n");
+ return (-1);
+ }
+
+ if (OF_searchencprop(timings_node, "native-mode", &native,
+ sizeof(native)) == -1) {
+ device_printf(dev, "no \"native-mode\" reference in \"timings\" node\n");
+ return (-1);
+ }
+
+ timing_node = OF_node_from_xref(native);
+
+ error = 0;
+ if ((error = am335x_read_property(dev, timing_node,
+ "hactive", &panel->panel_width)))
+ goto out;
+
+ if ((error = am335x_read_property(dev, timing_node,
+ "vactive", &panel->panel_height)))
+ goto out;
+
+ if ((error = am335x_read_property(dev, timing_node,
+ "hfront-porch", &panel->panel_hfp)))
+ goto out;
+
+ if ((error = am335x_read_property(dev, timing_node,
+ "hback-porch", &panel->panel_hbp)))
+ goto out;
+
+ if ((error = am335x_read_property(dev, timing_node,
+ "hsync-len", &panel->panel_hsw)))
+ goto out;
+
+ if ((error = am335x_read_property(dev, timing_node,
+ "vfront-porch", &panel->panel_vfp)))
+ goto out;
+
+ if ((error = am335x_read_property(dev, timing_node,
+ "vback-porch", &panel->panel_vbp)))
+ goto out;
+
+ if ((error = am335x_read_property(dev, timing_node,
+ "vsync-len", &panel->panel_vsw)))
+ goto out;
+
+ if ((error = am335x_read_property(dev, timing_node,
+ "clock-frequency", &panel->panel_pxl_clk)))
+ goto out;
+
+ if ((error = am335x_read_property(dev, timing_node,
+ "pixelclk-active", &panel->pixelclk_active)))
+ goto out;
+
+ if ((error = am335x_read_property(dev, timing_node,
+ "hsync-active", &panel->hsync_active)))
+ goto out;
+
+ if ((error = am335x_read_property(dev, timing_node,
+ "vsync-active", &panel->vsync_active)))
+ goto out;
+
+out:
+ return (error);
+}
+
+static int
+am335x_read_panel_info(device_t dev, phandle_t node, struct panel_info *panel)
+{
+ phandle_t panel_info_node;
+
+ panel_info_node = ofw_bus_find_child(node, "panel-info");
+ if (panel_info_node == 0)
+ return (-1);
+
+ am335x_read_property(dev, panel_info_node,
+ "ac-bias", &panel->ac_bias);
+
+ am335x_read_property(dev, panel_info_node,
+ "ac-bias-intrpt", &panel->ac_bias_intrpt);
+
+ am335x_read_property(dev, panel_info_node,
+ "dma-burst-sz", &panel->dma_burst_sz);
+
+ am335x_read_property(dev, panel_info_node,
+ "bpp", &panel->bpp);
+
+ am335x_read_property(dev, panel_info_node,
+ "fdd", &panel->fdd);
+
+ am335x_read_property(dev, panel_info_node,
+ "sync-edge", &panel->sync_edge);
+
+ am335x_read_property(dev, panel_info_node,
+ "sync-ctrl", &panel->sync_ctrl);
+
+ return (0);
+}
+
+static void
+am335x_lcd_intr(void *arg)
+{
+ struct am335x_lcd_softc *sc = arg;
+ uint32_t reg;
+
+ reg = LCD_READ4(sc, LCD_IRQSTATUS);
+ LCD_WRITE4(sc, LCD_IRQSTATUS, reg);
+ /* Read value back to make sure it reached the hardware */
+ reg = LCD_READ4(sc, LCD_IRQSTATUS);
+
+ if (reg & IRQ_SYNC_LOST) {
+ reg = LCD_READ4(sc, LCD_RASTER_CTRL);
+ reg &= ~RASTER_CTRL_LCDEN;
+ LCD_WRITE4(sc, LCD_RASTER_CTRL, reg);
+
+ reg = LCD_READ4(sc, LCD_RASTER_CTRL);
+ reg |= RASTER_CTRL_LCDEN;
+ LCD_WRITE4(sc, LCD_RASTER_CTRL, reg);
+ goto done;
+ }
+
+ if (reg & IRQ_PL) {
+ reg = LCD_READ4(sc, LCD_RASTER_CTRL);
+ reg &= ~RASTER_CTRL_LCDEN;
+ LCD_WRITE4(sc, LCD_RASTER_CTRL, reg);
+
+ reg = LCD_READ4(sc, LCD_RASTER_CTRL);
+ reg |= RASTER_CTRL_LCDEN;
+ LCD_WRITE4(sc, LCD_RASTER_CTRL, reg);
+ goto done;
+ }
+
+ if (reg & IRQ_EOF0) {
+ LCD_WRITE4(sc, LCD_LCDDMA_FB0_BASE, sc->sc_fb_phys);
+ LCD_WRITE4(sc, LCD_LCDDMA_FB0_CEILING, sc->sc_fb_phys + sc->sc_fb_size - 1);
+ reg &= ~IRQ_EOF0;
+ }
+
+ if (reg & IRQ_EOF1) {
+ LCD_WRITE4(sc, LCD_LCDDMA_FB1_BASE, sc->sc_fb_phys);
+ LCD_WRITE4(sc, LCD_LCDDMA_FB1_CEILING, sc->sc_fb_phys + sc->sc_fb_size - 1);
+ reg &= ~IRQ_EOF1;
+ }
+
+ if (reg & IRQ_FUF) {
+ /* TODO: Handle FUF */
+ }
+
+ if (reg & IRQ_ACB) {
+ /* TODO: Handle ACB */
+ }
+
+done:
+ LCD_WRITE4(sc, LCD_END_OF_INT_IND, 0);
+ /* Read value back to make sure it reached the hardware */
+ reg = LCD_READ4(sc, LCD_END_OF_INT_IND);
+}
+
+static const struct videomode *
+am335x_lcd_pick_mode(struct edid_info *ei)
+{
+ const struct videomode *videomode;
+ const struct videomode *m;
+ int n;
+
+ /* Get standard VGA as default */
+ videomode = NULL;
+
+ /*
+ * Pick a mode.
+ */
+ if (ei->edid_preferred_mode != NULL) {
+ if (am335x_mode_is_valid(ei->edid_preferred_mode))
+ videomode = ei->edid_preferred_mode;
+ }
+
+ if (videomode == NULL) {
+ m = ei->edid_modes;
+
+ sort_modes(ei->edid_modes,
+ &ei->edid_preferred_mode,
+ ei->edid_nmodes);
+ for (n = 0; n < ei->edid_nmodes; n++)
+ if (am335x_mode_is_valid(&m[n])) {
+ videomode = &m[n];
+ break;
+ }
+ }
+
+ return videomode;
+}
+
+static int
+am335x_lcd_configure(struct am335x_lcd_softc *sc)
+{
+ int div;
+ uint32_t reg, timing0, timing1, timing2;
+ uint32_t burst_log;
+ size_t dma_size;
+ uint32_t hbp, hfp, hsw;
+ uint32_t vbp, vfp, vsw;
+ uint32_t width, height;
+ unsigned int ref_freq;
+ int err;
+
+ /*
+ * try to adjust clock to get double of requested frequency
+ * HDMI/DVI displays are very sensitive to error in frequncy value
+ */
+ if (ti_prcm_clk_set_source_freq(LCDC_CLK, sc->sc_panel.panel_pxl_clk*2)) {
+ device_printf(sc->sc_dev, "can't set source frequency\n");
+ return (ENXIO);
+ }
+
+ if (ti_prcm_clk_get_source_freq(LCDC_CLK, &ref_freq)) {
+ device_printf(sc->sc_dev, "can't get reference frequency\n");
+ return (ENXIO);
+ }
+
+ /* Panle initialization */
+ dma_size = round_page(sc->sc_panel.panel_width*sc->sc_panel.panel_height*sc->sc_panel.bpp/8);
+
+ /*
+ * Now allocate framebuffer memory
+ */
+ err = bus_dma_tag_create(
+ bus_get_dma_tag(sc->sc_dev),
+ 4, 0, /* alignment, boundary */
+ BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
+ BUS_SPACE_MAXADDR, /* highaddr */
+ NULL, NULL, /* filter, filterarg */
+ dma_size, 1, /* maxsize, nsegments */
+ dma_size, 0, /* maxsegsize, flags */
+ NULL, NULL, /* lockfunc, lockarg */
+ &sc->sc_dma_tag);
+ if (err)
+ goto done;
+
+ err = bus_dmamem_alloc(sc->sc_dma_tag, (void **)&sc->sc_fb_base,
+ BUS_DMA_COHERENT, &sc->sc_dma_map);
+
+ if (err) {
+ device_printf(sc->sc_dev, "cannot allocate framebuffer\n");
+ goto done;
+ }
+
+ err = bus_dmamap_load(sc->sc_dma_tag, sc->sc_dma_map, sc->sc_fb_base,
+ dma_size, am335x_fb_dmamap_cb, &sc->sc_fb_phys, BUS_DMA_NOWAIT);
+
+ if (err) {
+ device_printf(sc->sc_dev, "cannot load DMA map\n");
+ goto done;
+ }
+
+ /* Make sure it's blank */
+ memset(sc->sc_fb_base, 0x0, dma_size);
+
+ /* Calculate actual FB Size */
+ sc->sc_fb_size = sc->sc_panel.panel_width*sc->sc_panel.panel_height*sc->sc_panel.bpp/8;
+
+ /* Only raster mode is supported */
+ reg = CTRL_RASTER_MODE;
+ div = am335x_lcd_calc_divisor(ref_freq, sc->sc_panel.panel_pxl_clk);
+ reg |= (div << CTRL_DIV_SHIFT);
+ LCD_WRITE4(sc, LCD_CTRL, reg);
+
+ /* Set timing */
+ timing0 = timing1 = timing2 = 0;
+
+ hbp = sc->sc_panel.panel_hbp - 1;
+ hfp = sc->sc_panel.panel_hfp - 1;
+ hsw = sc->sc_panel.panel_hsw - 1;
+
+ vbp = sc->sc_panel.panel_vbp;
+ vfp = sc->sc_panel.panel_vfp;
+ vsw = sc->sc_panel.panel_vsw - 1;
+
+ height = sc->sc_panel.panel_height - 1;
+ width = sc->sc_panel.panel_width - 1;
+
+ /* Horizontal back porch */
+ timing0 |= (hbp & 0xff) << RASTER_TIMING_0_HBP_SHIFT;
+ timing2 |= ((hbp >> 8) & 3) << RASTER_TIMING_2_HBPHI_SHIFT;
+ /* Horizontal front porch */
+ timing0 |= (hfp & 0xff) << RASTER_TIMING_0_HFP_SHIFT;
+ timing2 |= ((hfp >> 8) & 3) << RASTER_TIMING_2_HFPHI_SHIFT;
+ /* Horizontal sync width */
+ timing0 |= (hsw & 0x3f) << RASTER_TIMING_0_HSW_SHIFT;
+ timing2 |= ((hsw >> 6) & 0xf) << RASTER_TIMING_2_HSWHI_SHIFT;
+
+ /* Vertical back porch, front porch, sync width */
+ timing1 |= (vbp & 0xff) << RASTER_TIMING_1_VBP_SHIFT;
+ timing1 |= (vfp & 0xff) << RASTER_TIMING_1_VFP_SHIFT;
+ timing1 |= (vsw & 0x3f) << RASTER_TIMING_1_VSW_SHIFT;
+
+ /* Pixels per line */
+ timing0 |= ((width >> 10) & 1)
+ << RASTER_TIMING_0_PPLMSB_SHIFT;
+ timing0 |= ((width >> 4) & 0x3f)
+ << RASTER_TIMING_0_PPLLSB_SHIFT;
+
+ /* Lines per panel */
+ timing1 |= (height & 0x3ff)
+ << RASTER_TIMING_1_LPP_SHIFT;
+ timing2 |= ((height >> 10 ) & 1)
+ << RASTER_TIMING_2_LPP_B10_SHIFT;
+
+ /* clock signal settings */
+ if (sc->sc_panel.sync_ctrl)
+ timing2 |= RASTER_TIMING_2_PHSVS;
+ if (sc->sc_panel.sync_edge)
+ timing2 |= RASTER_TIMING_2_PHSVS_RISE;
+ else
+ timing2 |= RASTER_TIMING_2_PHSVS_FALL;
+ if (sc->sc_panel.hsync_active == 0)
+ timing2 |= RASTER_TIMING_2_IHS;
+ if (sc->sc_panel.vsync_active == 0)
+ timing2 |= RASTER_TIMING_2_IVS;
+ if (sc->sc_panel.pixelclk_active == 0)
+ timing2 |= RASTER_TIMING_2_IPC;
+
+ /* AC bias */
+ timing2 |= (sc->sc_panel.ac_bias << RASTER_TIMING_2_ACB_SHIFT);
+ timing2 |= (sc->sc_panel.ac_bias_intrpt << RASTER_TIMING_2_ACBI_SHIFT);
+
+ LCD_WRITE4(sc, LCD_RASTER_TIMING_0, timing0);
+ LCD_WRITE4(sc, LCD_RASTER_TIMING_1, timing1);
+ LCD_WRITE4(sc, LCD_RASTER_TIMING_2, timing2);
+
+ /* DMA settings */
+ reg = LCDDMA_CTRL_FB0_FB1;
+ /* Find power of 2 for current burst size */
+ switch (sc->sc_panel.dma_burst_sz) {
+ case 1:
+ burst_log = 0;
+ break;
+ case 2:
+ burst_log = 1;
+ break;
+ case 4:
+ burst_log = 2;
+ break;
+ case 8:
+ burst_log = 3;
+ break;
+ case 16:
+ default:
+ burst_log = 4;
+ break;
+ }
+ reg |= (burst_log << LCDDMA_CTRL_BURST_SIZE_SHIFT);
+ /* XXX: FIFO TH */
+ reg |= (0 << LCDDMA_CTRL_TH_FIFO_RDY_SHIFT);
+ LCD_WRITE4(sc, LCD_LCDDMA_CTRL, reg);
+
+ LCD_WRITE4(sc, LCD_LCDDMA_FB0_BASE, sc->sc_fb_phys);
+ LCD_WRITE4(sc, LCD_LCDDMA_FB0_CEILING, sc->sc_fb_phys + sc->sc_fb_size - 1);
+ LCD_WRITE4(sc, LCD_LCDDMA_FB1_BASE, sc->sc_fb_phys);
+ LCD_WRITE4(sc, LCD_LCDDMA_FB1_CEILING, sc->sc_fb_phys + sc->sc_fb_size - 1);
+
+ /* Enable LCD */
+ reg = RASTER_CTRL_LCDTFT;
+ reg |= (sc->sc_panel.fdd << RASTER_CTRL_REQDLY_SHIFT);
+ reg |= (PALETTE_DATA_ONLY << RASTER_CTRL_PALMODE_SHIFT);
+ if (sc->sc_panel.bpp >= 24)
+ reg |= RASTER_CTRL_TFT24;
+ if (sc->sc_panel.bpp == 32)
+ reg |= RASTER_CTRL_TFT24_UNPACKED;
+ LCD_WRITE4(sc, LCD_RASTER_CTRL, reg);
+
+ LCD_WRITE4(sc, LCD_CLKC_ENABLE,
+ CLKC_ENABLE_DMA | CLKC_ENABLE_LDID | CLKC_ENABLE_CORE);
+
+ LCD_WRITE4(sc, LCD_CLKC_RESET, CLKC_RESET_MAIN);
+ DELAY(100);
+ LCD_WRITE4(sc, LCD_CLKC_RESET, 0);
+
+ reg = IRQ_EOF1 | IRQ_EOF0 | IRQ_FUF | IRQ_PL |
+ IRQ_ACB | IRQ_SYNC_LOST | IRQ_RASTER_DONE |
+ IRQ_FRAME_DONE;
+ LCD_WRITE4(sc, LCD_IRQENABLE_SET, reg);
+
+ reg = LCD_READ4(sc, LCD_RASTER_CTRL);
+ reg |= RASTER_CTRL_LCDEN;
+ LCD_WRITE4(sc, LCD_RASTER_CTRL, reg);
+
+ LCD_WRITE4(sc, LCD_SYSCONFIG,
+ SYSCONFIG_STANDBY_SMART | SYSCONFIG_IDLE_SMART);
+
+ sc->sc_fb_info.fb_name = device_get_nameunit(sc->sc_dev);
+ sc->sc_fb_info.fb_vbase = (intptr_t)sc->sc_fb_base;
+ sc->sc_fb_info.fb_pbase = sc->sc_fb_phys;
+ sc->sc_fb_info.fb_size = sc->sc_fb_size;
+ sc->sc_fb_info.fb_bpp = sc->sc_fb_info.fb_depth = sc->sc_panel.bpp;
+ sc->sc_fb_info.fb_stride = sc->sc_panel.panel_width*sc->sc_panel.bpp / 8;
+ sc->sc_fb_info.fb_width = sc->sc_panel.panel_width;
+ sc->sc_fb_info.fb_height = sc->sc_panel.panel_height;
+
+#ifdef DEV_SC
+ err = (sc_attach_unit(device_get_unit(sc->sc_dev),
+ device_get_flags(sc->sc_dev) | SC_AUTODETECT_KBD));
+
+ if (err) {
+ device_printf(sc->sc_dev, "failed to attach syscons\n");
+ goto fail;
+ }
+
+ am335x_lcd_syscons_setup((vm_offset_t)sc->sc_fb_base, sc->sc_fb_phys, &panel);
+#else /* VT */
+ device_t fbd = device_add_child(sc->sc_dev, "fbd",
+ device_get_unit(sc->sc_dev));
+ if (fbd != NULL) {
+ if (device_probe_and_attach(fbd) != 0)
+ device_printf(sc->sc_dev, "failed to attach fbd device\n");
+ } else
+ device_printf(sc->sc_dev, "failed to add fbd child\n");
+#endif
+
+done:
+ return (err);
+}
+
+static void
+am335x_lcd_hdmi_event(void *arg, device_t hdmi, int event)
+{
+ struct am335x_lcd_softc *sc;
+ const struct videomode *videomode;
+ struct videomode hdmi_mode;
+ device_t hdmi_dev;
+ uint8_t *edid;
+ uint32_t edid_len;
+ struct edid_info ei;
+
+ sc = arg;
+
+ /* Nothing to work with */
+ if (!sc->sc_hdmi_framer) {
+ device_printf(sc->sc_dev, "HDMI event without HDMI framer set\n");
+ return;
+ }
+
+ hdmi_dev = OF_device_from_xref(sc->sc_hdmi_framer);
+ if (!hdmi_dev) {
+ device_printf(sc->sc_dev, "no actual device for \"hdmi\" property\n");
+ return;
+ }
+
+ edid = NULL;
+ edid_len = 0;
+ if (HDMI_GET_EDID(hdmi_dev, &edid, &edid_len) != 0) {
+ device_printf(sc->sc_dev, "failed to get EDID info from HDMI framer\n");
+ return;
+ }
+
+ videomode = NULL;
+
+ if (edid_parse(edid, &ei) == 0) {
+ edid_print(&ei);
+ videomode = am335x_lcd_pick_mode(&ei);
+ } else
+ device_printf(sc->sc_dev, "failed to parse EDID\n");
+
+ /* Use standard VGA as fallback */
+ if (videomode == NULL)
+ videomode = pick_mode_by_ref(640, 480, 60);
+
+ if (videomode == NULL) {
+ device_printf(sc->sc_dev, "failed to find usable videomode");
+ return;
+ }
+
+ device_printf(sc->sc_dev, "detected videomode: %dx%d @ %dKHz\n", videomode->hdisplay,
+ videomode->vdisplay, am335x_mode_vrefresh(videomode));
+
+ sc->sc_panel.panel_width = videomode->hdisplay;
+ sc->sc_panel.panel_height = videomode->vdisplay;
+ sc->sc_panel.panel_hfp = videomode->hsync_start - videomode->hdisplay;
+ sc->sc_panel.panel_hbp = videomode->htotal - videomode->hsync_end;
+ sc->sc_panel.panel_hsw = videomode->hsync_end - videomode->hsync_start;
+ sc->sc_panel.panel_vfp = videomode->vsync_start - videomode->vdisplay;
+ sc->sc_panel.panel_vbp = videomode->vtotal - videomode->vsync_end;
+ sc->sc_panel.panel_vsw = videomode->vsync_end - videomode->vsync_start;
+ sc->sc_panel.pixelclk_active = 1;
+
+ /* logic for HSYNC should be reversed */
+ if (videomode->flags & VID_NHSYNC)
+ sc->sc_panel.hsync_active = 1;
+ else
+ sc->sc_panel.hsync_active = 0;
+
+ if (videomode->flags & VID_NVSYNC)
+ sc->sc_panel.vsync_active = 0;
+ else
+ sc->sc_panel.vsync_active = 1;
+
+ sc->sc_panel.panel_pxl_clk = videomode->dot_clock * 1000;
+
+ am335x_lcd_configure(sc);
+
+ memcpy(&hdmi_mode, videomode, sizeof(hdmi_mode));
+ hdmi_mode.hskew = videomode->hsync_end - videomode->hsync_start;
+ hdmi_mode.flags |= VID_HSKEW;
+
+ HDMI_SET_VIDEOMODE(hdmi_dev, &hdmi_mode);
+}
+
+static int
+am335x_lcd_probe(device_t dev)
+{
+#ifdef DEV_SC
+ int err;
+#endif
+
+ if (!ofw_bus_status_okay(dev))
+ return (ENXIO);
+
+ if (!ofw_bus_is_compatible(dev, "ti,am33xx-tilcdc"))
+ return (ENXIO);
+
+ device_set_desc(dev, "AM335x LCD controller");
+
+#ifdef DEV_SC
+ err = sc_probe_unit(device_get_unit(dev),
+ device_get_flags(dev) | SC_AUTODETECT_KBD);
+ if (err != 0)
+ return (err);
+#endif
+
+ return (BUS_PROBE_DEFAULT);
+}
+
+static int
+am335x_lcd_attach(device_t dev)
+{
+ struct am335x_lcd_softc *sc;
+
+ int err;
+ int rid;
+ struct sysctl_ctx_list *ctx;
+ struct sysctl_oid *tree;
+ phandle_t root, panel_node;
+
+ err = 0;
+ sc = device_get_softc(dev);
+ sc->sc_dev = dev;
+
+ am335x_read_hdmi_property(dev);
+
+ root = OF_finddevice("/");
+ if (root == -1) {
+ device_printf(dev, "failed to get FDT root node\n");
+ return (ENXIO);
+ }
+
+ sc->sc_panel.ac_bias = 255;
+ sc->sc_panel.ac_bias_intrpt = 0;
+ sc->sc_panel.dma_burst_sz = 16;
+ sc->sc_panel.bpp = 16;
+ sc->sc_panel.fdd = 128;
+ sc->sc_panel.sync_edge = 0;
+ sc->sc_panel.sync_ctrl = 1;
+
+ panel_node = fdt_find_compatible(root, "ti,tilcdc,panel", 1);
+ if (panel_node != 0) {
+ device_printf(dev, "using static panel info\n");
+ if (am335x_read_panel_info(dev, panel_node, &sc->sc_panel)) {
+ device_printf(dev, "failed to read panel info\n");
+ return (ENXIO);
+ }
+
+ if (am335x_read_timing(dev, panel_node, &sc->sc_panel)) {
+ device_printf(dev, "failed to read timings\n");
+ return (ENXIO);
+ }
+ }
+
+ ti_prcm_clk_enable(LCDC_CLK);
+
+ rid = 0;
+ sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
+ RF_ACTIVE);
+ if (!sc->sc_mem_res) {
+ device_printf(dev, "cannot allocate memory window\n");
+ return (ENXIO);
+ }
+
+ rid = 0;
+ sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
+ RF_ACTIVE);
+ if (!sc->sc_irq_res) {
+ bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_mem_res);
+ device_printf(dev, "cannot allocate interrupt\n");
+ return (ENXIO);
+ }
+
+ if (bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_MISC | INTR_MPSAFE,
+ NULL, am335x_lcd_intr, sc,
+ &sc->sc_intr_hl) != 0) {
+ bus_release_resource(dev, SYS_RES_IRQ, rid,
+ sc->sc_irq_res);
+ bus_release_resource(dev, SYS_RES_MEMORY, rid,
+ sc->sc_mem_res);
+ device_printf(dev, "Unable to setup the irq handler.\n");
+ return (ENXIO);
+ }
+
+ LCD_LOCK_INIT(sc);
+
+ /* Init backlight interface */
+ ctx = device_get_sysctl_ctx(sc->sc_dev);
+ tree = device_get_sysctl_tree(sc->sc_dev);
+ sc->sc_oid = SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
+ "backlight", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
+ am335x_lcd_sysctl_backlight, "I", "LCD backlight");
+ sc->sc_backlight = 0;
+ /* Check if eCAS interface is available at this point */
+ if (am335x_pwm_config_ecap(PWM_UNIT,
+ PWM_PERIOD, PWM_PERIOD) == 0)
+ sc->sc_backlight = 100;
+
+ if (panel_node != 0)
+ am335x_lcd_configure(sc);
+ else
+ sc->sc_hdmi_evh = EVENTHANDLER_REGISTER(hdmi_event,
+ am335x_lcd_hdmi_event, sc, EVENTHANDLER_PRI_ANY);
+
+ return (0);
+}
+
+static int
+am335x_lcd_detach(device_t dev)
+{
+ /* Do not let unload driver */
+ return (EBUSY);
+}
+
+static struct fb_info *
+am335x_lcd_fb_getinfo(device_t dev)
+{
+ struct am335x_lcd_softc *sc;
+
+ sc = device_get_softc(dev);
+
+ return (&sc->sc_fb_info);
+}
+
+static device_method_t am335x_lcd_methods[] = {
+ DEVMETHOD(device_probe, am335x_lcd_probe),
+ DEVMETHOD(device_attach, am335x_lcd_attach),
+ DEVMETHOD(device_detach, am335x_lcd_detach),
+
+ /* Framebuffer service methods */
+ DEVMETHOD(fb_getinfo, am335x_lcd_fb_getinfo),
+
+ DEVMETHOD_END
+};
+
+static driver_t am335x_lcd_driver = {
+ "fb",
+ am335x_lcd_methods,
+ sizeof(struct am335x_lcd_softc),
+};
+
+static devclass_t am335x_lcd_devclass;
+
+DRIVER_MODULE(am335x_lcd, simplebus, am335x_lcd_driver, am335x_lcd_devclass, 0, 0);
+MODULE_VERSION(am335x_lcd, 1);
+MODULE_DEPEND(am335x_lcd, simplebus, 1, 1, 1);
diff --git a/freebsd/sys/arm/ti/am335x/am335x_lcd.h b/freebsd/sys/arm/ti/am335x/am335x_lcd.h
new file mode 100644
index 00000000..f230a930
--- /dev/null
+++ b/freebsd/sys/arm/ti/am335x/am335x_lcd.h
@@ -0,0 +1,60 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2013 Oleksandr Tymoshenko <gonzo@freebsd.org>
+ * 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.
+ *
+ * $FreeBSD$
+ */
+#ifndef __AM335X_LCD_H__
+#define __AM335X_LCD_H__
+
+struct panel_info {
+ /* Timing part */
+ uint32_t panel_width;
+ uint32_t panel_height;
+ uint32_t panel_hfp;
+ uint32_t panel_hbp;
+ uint32_t panel_hsw;
+ uint32_t panel_vfp;
+ uint32_t panel_vbp;
+ uint32_t panel_vsw;
+ uint32_t hsync_active;
+ uint32_t vsync_active;
+ uint32_t panel_pxl_clk;
+
+ uint32_t ac_bias;
+ uint32_t ac_bias_intrpt;
+ uint32_t dma_burst_sz;
+ uint32_t bpp;
+ uint32_t fdd;
+ uint32_t sync_edge;
+ uint32_t sync_ctrl;
+ uint32_t pixelclk_active;
+};
+
+int am335x_lcd_syscons_setup(vm_offset_t vaddr, vm_paddr_t paddr,
+ struct panel_info *panel);
+
+#endif /* __AM335X_LCD_H__ */
diff --git a/freebsd/sys/arm/ti/am335x/am335x_pwm.h b/freebsd/sys/arm/ti/am335x/am335x_pwm.h
new file mode 100644
index 00000000..956913dc
--- /dev/null
+++ b/freebsd/sys/arm/ti/am335x/am335x_pwm.h
@@ -0,0 +1,35 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+ *
+ * Copyright (c) 2013 Oleksandr Tymoshenko <gonzo@freebsd.org>
+ * 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.
+ *
+ * $FreeBSD$
+ */
+#ifndef __AM335X_PWM_H__
+#define __AM335X_PWM_H__
+
+int am335x_pwm_config_ecap(int unit, int period, int duty);
+
+#endif /* __AM335X_PWM_H__ */
diff --git a/freebsd/sys/arm/ti/am335x/am335x_pwmss.c b/freebsd/sys/arm/ti/am335x/am335x_pwmss.c
new file mode 100644
index 00000000..f9249989
--- /dev/null
+++ b/freebsd/sys/arm/ti/am335x/am335x_pwmss.c
@@ -0,0 +1,165 @@
+#include <machine/rtems-bsd-kernel-space.h>
+
+/*-
+ * Copyright (c) 2013 Oleksandr Tymoshenko <gonzo@freebsd.org>
+ * 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 <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/kernel.h>
+#include <sys/limits.h>
+#include <sys/lock.h>
+#include <sys/module.h>
+#include <sys/mutex.h>
+#include <rtems/bsd/sys/resource.h>
+#include <sys/rman.h>
+#include <sys/sysctl.h>
+
+#include <machine/bus.h>
+
+#include <dev/fdt/simplebus.h>
+#include <dev/ofw/openfirm.h>
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include <arm/ti/ti_prcm.h>
+#include <arm/ti/ti_hwmods.h>
+#include <arm/ti/ti_scm.h>
+
+#include "am335x_pwm.h"
+#include "am335x_scm.h"
+
+#define PWMSS_IDVER 0x00
+#define PWMSS_SYSCONFIG 0x04
+#define PWMSS_CLKCONFIG 0x08
+#define CLKCONFIG_EPWMCLK_EN (1 << 8)
+#define PWMSS_CLKSTATUS 0x0C
+
+static device_probe_t am335x_pwmss_probe;
+static device_attach_t am335x_pwmss_attach;
+static device_detach_t am335x_pwmss_detach;
+
+struct am335x_pwmss_softc {
+ struct simplebus_softc sc_simplebus;
+ device_t sc_dev;
+ clk_ident_t sc_clk;
+};
+
+static device_method_t am335x_pwmss_methods[] = {
+ DEVMETHOD(device_probe, am335x_pwmss_probe),
+ DEVMETHOD(device_attach, am335x_pwmss_attach),
+ DEVMETHOD(device_detach, am335x_pwmss_detach),
+
+ DEVMETHOD_END
+};
+
+static int
+am335x_pwmss_probe(device_t dev)
+{
+
+ if (!ofw_bus_status_okay(dev))
+ return (ENXIO);
+
+ if (!ofw_bus_is_compatible(dev, "ti,am33xx-pwmss"))
+ return (ENXIO);
+
+ device_set_desc(dev, "AM335x PWM");
+
+ return (BUS_PROBE_DEFAULT);
+}
+
+static int
+am335x_pwmss_attach(device_t dev)
+{
+ struct am335x_pwmss_softc *sc;
+ uint32_t reg, id;
+ phandle_t node;
+
+ sc = device_get_softc(dev);
+ sc->sc_dev = dev;
+
+ sc->sc_clk = ti_hwmods_get_clock(dev);
+ if (sc->sc_clk == INVALID_CLK_IDENT) {
+ device_printf(dev, "failed to get device id based on ti,hwmods\n");
+ return (EINVAL);
+ }
+
+ ti_prcm_clk_enable(sc->sc_clk);
+ ti_scm_reg_read_4(SCM_PWMSS_CTRL, &reg);
+ switch (sc->sc_clk) {
+ case PWMSS0_CLK:
+ id = 0;
+ break;
+ case PWMSS1_CLK:
+ id = 1;
+ break;
+
+ case PWMSS2_CLK:
+ id = 2;
+ break;
+ default:
+ device_printf(dev, "unknown pwmss clock id: %d\n", sc->sc_clk);
+ return (EINVAL);
+ }
+ reg |= (1 << id);
+ ti_scm_reg_write_4(SCM_PWMSS_CTRL, reg);
+
+ node = ofw_bus_get_node(dev);
+
+ if (node == -1)
+ return (ENXIO);
+
+ simplebus_init(dev, node);
+
+ /*
+ * Allow devices to identify.
+ */
+ bus_generic_probe(dev);
+
+ /*
+ * Now walk the OFW tree and attach top-level devices.
+ */
+ for (node = OF_child(node); node > 0; node = OF_peer(node))
+ simplebus_add_device(dev, node, 0, NULL, -1, NULL);
+
+ return (bus_generic_attach(dev));
+}
+
+static int
+am335x_pwmss_detach(device_t dev)
+{
+
+ return (0);
+}
+
+DEFINE_CLASS_1(am335x_pwmss, am335x_pwmss_driver, am335x_pwmss_methods,
+ sizeof(struct am335x_pwmss_softc), simplebus_driver);
+static devclass_t am335x_pwmss_devclass;
+DRIVER_MODULE(am335x_pwmss, simplebus, am335x_pwmss_driver, am335x_pwmss_devclass, 0, 0);
+MODULE_VERSION(am335x_pwmss, 1);