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[src/trunk]: src/sys/arch/arm/allwinner driver for cubietruck's VGA port. Not...
details: https://anonhg.NetBSD.org/src/rev/010691def894
branches: trunk
changeset: 812665:010691def894
user: macallan <macallan%NetBSD.org@localhost>
date: Sat Dec 26 16:56:41 2015 +0000
description:
driver for cubietruck's VGA port. Not quite finished but enough to be useful
diffstat:
sys/arch/arm/allwinner/awin_io.c | 3 +-
sys/arch/arm/allwinner/awin_tve.c | 297 ++++++++++++++++++++++++++++++++++++++
sys/arch/arm/allwinner/files.awin | 7 +-
3 files changed, 305 insertions(+), 2 deletions(-)
diffs (truncated from 342 to 300 lines):
diff -r 9e4bec840e75 -r 010691def894 sys/arch/arm/allwinner/awin_io.c
--- a/sys/arch/arm/allwinner/awin_io.c Sat Dec 26 16:54:41 2015 +0000
+++ b/sys/arch/arm/allwinner/awin_io.c Sat Dec 26 16:56:41 2015 +0000
@@ -31,7 +31,7 @@
#include <sys/cdefs.h>
-__KERNEL_RCSID(1, "$NetBSD: awin_io.c,v 1.43 2015/04/20 01:33:22 matt Exp $");
+__KERNEL_RCSID(1, "$NetBSD: awin_io.c,v 1.44 2015/12/26 16:56:41 macallan Exp $");
#include <sys/param.h>
#include <sys/bus.h>
@@ -168,6 +168,7 @@
{ "awiniic", OFFANDSIZE(A80_TWI2), 2, AWIN_A80_IRQ_TWI2, A80 },
{ "awiniic", OFFANDSIZE(A80_TWI3), 3, AWIN_A80_IRQ_TWI3, A80 },
{ "awiniic", OFFANDSIZE(A80_TWI4), 4, AWIN_A80_IRQ_TWI4, A80 },
+ { "awintve", OFFANDSIZE(TVE0), 0, AWIN_IRQ_TVE, A20 },
{ "awinp2wi", OFFANDSIZE(A31_P2WI), NOPORT, AWIN_A31_IRQ_P2WI, A31 },
{ "awinp2wi", OFFANDSIZE(A80_RSB), NOPORT, AWIN_A80_IRQ_R_RSB, A80 },
{ "spi", OFFANDSIZE(SPI0), 0, AWIN_IRQ_SPI0, AANY },
diff -r 9e4bec840e75 -r 010691def894 sys/arch/arm/allwinner/awin_tve.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/arm/allwinner/awin_tve.c Sat Dec 26 16:56:41 2015 +0000
@@ -0,0 +1,297 @@
+/* $NetBSD: awin_tve.c,v 1.1 2015/12/26 16:56:41 macallan Exp $ */
+
+/*-
+ * Copyright (c) 2015 Michael Lorenz
+ * 2014 Jared D. 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 AUTHOR ``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 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.
+ */
+
+/* based on jmcneill's awin_hdmi.c */
+
+#include "opt_ddb.h"
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: awin_tve.c,v 1.1 2015/12/26 16:56:41 macallan Exp $");
+
+#include <sys/param.h>
+#include <sys/bus.h>
+#include <sys/device.h>
+#include <sys/intr.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/proc.h>
+#include <sys/mutex.h>
+#include <sys/kthread.h>
+
+#include <arm/allwinner/awin_reg.h>
+#include <arm/allwinner/awin_var.h>
+
+#include <dev/i2c/i2cvar.h>
+#include <dev/i2c/ddcvar.h>
+#include <dev/i2c/ddcreg.h>
+#include <dev/videomode/videomode.h>
+#include <dev/videomode/edidvar.h>
+
+#include "opt_allwinner.h"
+
+#define AWIN_TVE_DEBUG
+
+struct awin_tve_softc {
+ device_t sc_dev;
+ bus_space_tag_t sc_bst;
+ bus_space_handle_t sc_bsh;
+ void *sc_ih;
+
+ struct i2c_controller *sc_i2c;
+
+ bool sc_connected;
+ char sc_display_vendor[16];
+ char sc_display_product[16];
+
+ int sc_tcon_unit;
+ unsigned int sc_tcon_pll;
+
+ uint32_t sc_ver;
+ unsigned int sc_i2c_blklen;
+};
+
+#define TVE_READ(sc, reg) \
+ bus_space_read_4((sc)->sc_bst, (sc)->sc_bsh, (reg))
+#define TVE_WRITE(sc, reg, val) \
+ bus_space_write_4((sc)->sc_bst, (sc)->sc_bsh, (reg), (val));
+
+static int awin_tve_match(device_t, cfdata_t, void *);
+static void awin_tve_attach(device_t, device_t, void *);
+
+static void awin_tve_i2c_init(struct awin_tve_softc *);
+
+static void awin_tve_enable(struct awin_tve_softc *);
+static void awin_tve_read_edid(struct awin_tve_softc *);
+static int awin_tve_read_edid_block(struct awin_tve_softc *, uint8_t *,
+ uint8_t);
+static void awin_tve_video_enable(struct awin_tve_softc *, bool);
+#if 0
+static int awin_tve_intr(void *);
+#endif
+
+#if defined(DDB)
+void awin_tve_dump_regs(void);
+#endif
+
+CFATTACH_DECL_NEW(awin_tve, sizeof(struct awin_tve_softc),
+ awin_tve_match, awin_tve_attach, NULL, NULL);
+
+static int
+awin_tve_match(device_t parent, cfdata_t cf, void *aux)
+{
+ struct awinio_attach_args * const aio = aux;
+ const struct awin_locators * const loc = &aio->aio_loc;
+
+ if (strcmp(cf->cf_name, loc->loc_name))
+ return 0;
+
+ return 1;
+}
+
+static void
+awin_tve_attach(device_t parent, device_t self, void *aux)
+{
+ struct awin_tve_softc *sc = device_private(self);
+ struct awinio_attach_args * const aio = aux;
+ const struct awin_locators * const loc = &aio->aio_loc;
+ prop_dictionary_t cfg = device_properties(self);
+ int8_t tcon_unit = -1;
+
+ sc->sc_dev = self;
+ sc->sc_bst = aio->aio_core_bst;
+ bus_space_subregion(sc->sc_bst, aio->aio_core_bsh,
+ loc->loc_offset, loc->loc_size, &sc->sc_bsh);
+
+ if (prop_dictionary_get_int8(cfg, "tcon_unit", &tcon_unit)) {
+ sc->sc_tcon_unit = tcon_unit;
+ } else {
+ sc->sc_tcon_unit = 0; /* default value */
+ }
+ sc->sc_tcon_pll = awin_tcon_get_clk_pll(sc->sc_tcon_unit);
+ switch (sc->sc_tcon_pll) {
+ case 3:
+ awin_pll3_enable();
+ break;
+ case 7:
+ awin_pll7_enable();
+ break;
+ default:
+ panic("awin_tve pll");
+ }
+
+ /* for now assume we're always at 0 */
+ awin_reg_set_clear(aio->aio_core_bst, aio->aio_ccm_bsh,
+ AWIN_AHB_GATING1_REG, AWIN_AHB_GATING1_TVE0, 0);
+
+ aprint_naive("\n");
+ aprint_normal(": TV Encoder / VGA output\n");
+ if (tcon_unit >= 0) {
+ aprint_verbose_dev(self, ": using TCON%d, pll%d\n",
+ sc->sc_tcon_unit, sc->sc_tcon_pll);
+ }
+
+ sc->sc_i2c_blklen = 16;
+
+#if 0
+ sc->sc_ih = intr_establish(loc->loc_intr, IPL_SCHED, IST_LEVEL,
+ awin_tve_intr, sc);
+ if (sc->sc_ih == NULL) {
+ aprint_error_dev(self, "couldn't establish interrupt %d\n",
+ loc->loc_intr);
+ return;
+ }
+ aprint_normal_dev(self, "interrupting on irq %d\n", loc->loc_intr);
+#endif
+
+ awin_tve_i2c_init(sc);
+
+ awin_tve_enable(sc);
+ awin_tve_read_edid(sc);
+}
+
+static void
+awin_tve_i2c_init(struct awin_tve_softc *sc)
+{
+ device_t iic2;
+
+ sc->sc_i2c = NULL;
+
+ iic2 = device_find_by_driver_unit("awiniic", 2);
+
+ if (iic2 == NULL)
+ return;
+
+ sc->sc_i2c = awin_twi_get_controller(iic2);
+}
+
+static void
+awin_tve_enable(struct awin_tve_softc *sc)
+{
+ uint32_t reg;
+
+ bus_space_write_4(sc->sc_bst, sc->sc_bsh, AWIN_TVE_CONFIG, 0x20000000);
+ bus_space_write_4(sc->sc_bst, sc->sc_bsh, AWIN_TVE_DAC_1, 0x403f1ac7);
+ reg = bus_space_read_4(sc->sc_bst, sc->sc_bsh, AWIN_TVE_DAC_2);
+ reg &= 0xff000000;
+ bus_space_write_4(sc->sc_bst, sc->sc_bsh, AWIN_TVE_DAC_2, reg);
+ reg = bus_space_read_4(sc->sc_bst, sc->sc_bsh, AWIN_TVE_ENABLE);
+ reg &= ~(0xfff << 4);
+ reg |= (0x321 << 4);
+ bus_space_write_4(sc->sc_bst, sc->sc_bsh, AWIN_TVE_ENABLE, reg);
+ delay(1000);
+}
+
+
+static int
+awin_tve_read_edid_block(struct awin_tve_softc *sc, uint8_t *data,
+ uint8_t block)
+{
+ i2c_tag_t tag = sc->sc_i2c;
+ uint8_t wbuf[2];
+ int error;
+
+ if (tag == NULL) {
+ aprint_error_dev(sc->sc_dev,
+ "couldn't find awiniic2 - no DDC2 possible\n");
+ return -1;
+ }
+
+ if ((error = iic_acquire_bus(tag, I2C_F_POLL)) != 0)
+ return error;
+
+ wbuf[0] = block; /* start address */
+
+ if ((error = iic_exec(tag, I2C_OP_READ_WITH_STOP, DDC_ADDR, wbuf, 1,
+ data, 128, I2C_F_POLL)) != 0) {
+ iic_release_bus(tag, I2C_F_POLL);
+ return error;
+ }
+ iic_release_bus(tag, I2C_F_POLL);
+
+ return 0;
+}
+
+static void
+awin_tve_read_edid(struct awin_tve_softc *sc)
+{
+ const struct videomode *mode = NULL;
+ char edid[128];
+ struct edid_info ei;
+ int retry = 4;
+
+ memset(edid, 0, sizeof(edid));
+ memset(&ei, 0, sizeof(ei));
+
+ while (--retry > 0) {
+ if (!awin_tve_read_edid_block(sc, edid, 0))
+ break;
+ }
+ if (retry == 0) {
+ device_printf(sc->sc_dev, "failed to read EDID\n");
+ } else {
+ if (edid_parse(edid, &ei) != 0) {
+ device_printf(sc->sc_dev, "failed to parse EDID\n");
+ }
+#ifdef AWIN_TVE_DEBUG
+ else {
+ edid_print(&ei);
+ }
+#endif
+ }
+
+ strlcpy(sc->sc_display_vendor, ei.edid_vendorname,
+ sizeof(sc->sc_display_vendor));
+ strlcpy(sc->sc_display_product, ei.edid_productname,
+ sizeof(sc->sc_display_product));
+
+ device_printf(sc->sc_dev, "VGA monitor found: [%s]\n",
+ sc->sc_display_product);
+
+ mode = ei.edid_preferred_mode;
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