svn commit: r263936 - in head/sys: arm/conf arm/samsung/exynos boot/fdt/dts/arm
Ruslan Bukin
br at FreeBSD.org
Sun Mar 30 15:22:38 UTC 2014
Author: br
Date: Sun Mar 30 15:22:36 2014
New Revision: 263936
URL: http://svnweb.freebsd.org/changeset/base/263936
Log:
Add support for keyboard used in Samsung Chromebook (ARM machine)
Support covers device drivers for:
- Interrupt Combiner
- gpio/pad, External Interrupts Controller (pad)
- I2C Interface
- Chrome Embedded Controller
- Chrome Keyboard
Also:
- Use new gpio dev class in EHCI driver
- Expand device tree information
Added:
head/sys/arm/conf/CHROMEBOOK.hints (contents, props changed)
head/sys/arm/samsung/exynos/chrome_ec.c (contents, props changed)
head/sys/arm/samsung/exynos/chrome_ec.h (contents, props changed)
head/sys/arm/samsung/exynos/chrome_kb.c (contents, props changed)
head/sys/arm/samsung/exynos/chrome_kb.h (contents, props changed)
head/sys/arm/samsung/exynos/exynos5_combiner.c (contents, props changed)
head/sys/arm/samsung/exynos/exynos5_combiner.h (contents, props changed)
head/sys/arm/samsung/exynos/exynos5_i2c.c (contents, props changed)
head/sys/arm/samsung/exynos/exynos5_pad.c (contents, props changed)
head/sys/arm/samsung/exynos/exynos5_pad.h (contents, props changed)
Modified:
head/sys/arm/conf/CHROMEBOOK
head/sys/arm/samsung/exynos/exynos5_ehci.c
head/sys/arm/samsung/exynos/files.exynos5
head/sys/boot/fdt/dts/arm/exynos5250-arndale.dts
head/sys/boot/fdt/dts/arm/exynos5250-chromebook.dts
head/sys/boot/fdt/dts/arm/exynos5250.dtsi
Modified: head/sys/arm/conf/CHROMEBOOK
==============================================================================
--- head/sys/arm/conf/CHROMEBOOK Sun Mar 30 14:57:00 2014 (r263935)
+++ head/sys/arm/conf/CHROMEBOOK Sun Mar 30 15:22:36 2014 (r263936)
@@ -20,6 +20,11 @@
include "EXYNOS5250.common"
ident CHROMEBOOK
+hints "CHROMEBOOK.hints"
+
+device chrome_ec # Chrome Embedded Controller
+device chrome_kb # Chrome Keyboard
+
# Framebuffer
device vt
device kbdmux
Added: head/sys/arm/conf/CHROMEBOOK.hints
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/arm/conf/CHROMEBOOK.hints Sun Mar 30 15:22:36 2014 (r263936)
@@ -0,0 +1,5 @@
+# $FreeBSD$
+
+# Chrome Embedded Controller
+hint.chrome_ec.0.at="iicbus0"
+hint.chrome_ec.0.addr=0x1e
Added: head/sys/arm/samsung/exynos/chrome_ec.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/arm/samsung/exynos/chrome_ec.c Sun Mar 30 15:22:36 2014 (r263936)
@@ -0,0 +1,253 @@
+/*-
+ * Copyright (c) 2014 Ruslan Bukin <br at bsdpad.com>
+ * 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 EXPREC OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNEC 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 BUSINEC 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.
+ */
+
+/*
+ * Samsung Chromebook Embedded Controller
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/malloc.h>
+#include <sys/rman.h>
+#include <sys/timeet.h>
+#include <sys/timetc.h>
+#include <sys/watchdog.h>
+#include <sys/gpio.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 <machine/bus.h>
+#include <machine/fdt.h>
+#include <machine/cpu.h>
+#include <machine/intr.h>
+
+#include <dev/iicbus/iiconf.h>
+
+#include "iicbus_if.h"
+#include "gpio_if.h"
+
+#include <arm/samsung/exynos/chrome_ec.h>
+
+/* TODO: export to DTS */
+#define OUR_GPIO 177
+#define EC_GPIO 168
+
+struct ec_softc {
+ device_t dev;
+};
+
+struct ec_softc *ec_sc;
+
+/*
+ * bus_claim, bus_release
+ * both functions used for bus arbitration
+ * in multi-master mode
+ */
+
+static int
+bus_claim(struct ec_softc *sc)
+{
+ device_t gpio_dev;
+ int status;
+
+ gpio_dev = devclass_get_device(devclass_find("gpio"), 0);
+ if (gpio_dev == NULL) {
+ device_printf(sc->dev, "cant find gpio_dev\n");
+ return (1);
+ }
+
+ /* Say we want the bus */
+ GPIO_PIN_SET(gpio_dev, OUR_GPIO, GPIO_PIN_LOW);
+
+ /* Check EC decision */
+ GPIO_PIN_GET(gpio_dev, EC_GPIO, &status);
+
+ if (status == 1) {
+ /* Okay. We have bus */
+ return (0);
+ }
+
+ /* EC is master */
+ return (-1);
+}
+
+static int
+bus_release(struct ec_softc *sc)
+{
+ device_t gpio_dev;
+
+ gpio_dev = devclass_get_device(devclass_find("gpio"), 0);
+ if (gpio_dev == NULL) {
+ device_printf(sc->dev, "cant find gpio_dev\n");
+ return (1);
+ }
+
+ GPIO_PIN_SET(gpio_dev, OUR_GPIO, GPIO_PIN_HIGH);
+
+ return (0);
+}
+
+static int
+ec_probe(device_t dev)
+{
+
+ device_set_desc(dev, "Chromebook Embedded Controller");
+ return (BUS_PROBE_DEFAULT);
+}
+
+static int
+fill_checksum(uint8_t *data_out, int len)
+{
+ int res;
+ int i;
+
+ res = 0;
+ for (i = 0; i < len; i++) {
+ res += data_out[i];
+ }
+
+ data_out[len] = (res & 0xff);
+
+ return (0);
+}
+
+int
+ec_command(uint8_t cmd, uint8_t *dout, uint8_t dout_len,
+ uint8_t *dinp, uint8_t dinp_len)
+{
+ struct ec_softc *sc;
+ uint8_t *msg_dout;
+ uint8_t *msg_dinp;
+ int ret;
+ int i;
+
+ msg_dout = malloc(dout_len + 4, M_DEVBUF, M_NOWAIT);
+ msg_dinp = malloc(dinp_len + 4, M_DEVBUF, M_NOWAIT);
+
+ if (ec_sc == NULL)
+ return (-1);
+
+ sc = ec_sc;
+
+ msg_dout[0] = EC_CMD_VERSION0;
+ msg_dout[1] = cmd;
+ msg_dout[2] = dout_len;
+
+ for (i = 0; i < dout_len; i++) {
+ msg_dout[i + 3] = dout[i];
+ };
+
+ fill_checksum(msg_dout, dout_len + 3);
+
+ struct iic_msg msgs[] = {
+ { 0x1e, IIC_M_WR, dout_len + 4, msg_dout, },
+ { 0x1e, IIC_M_RD, dinp_len + 4, msg_dinp, },
+ };
+
+ ret = iicbus_transfer(sc->dev, msgs, 2);
+ if (ret != 0) {
+ device_printf(sc->dev, "i2c transfer returned %d\n", ret);
+ free(msg_dout, M_DEVBUF);
+ free(msg_dinp, M_DEVBUF);
+ return (-1);
+ }
+
+ for (i = 0; i < dinp_len; i++) {
+ dinp[i] = msg_dinp[i + 3];
+ };
+
+ free(msg_dout, M_DEVBUF);
+ free(msg_dinp, M_DEVBUF);
+ return (0);
+}
+
+int ec_hello(void)
+{
+ uint8_t data_in[4];
+ uint8_t data_out[4];
+
+ data_in[0] = 0x40;
+ data_in[1] = 0x30;
+ data_in[2] = 0x20;
+ data_in[3] = 0x10;
+
+ ec_command(EC_CMD_MKBP_STATE, data_in, 4,
+ data_out, 4);
+
+ return (0);
+}
+
+static int
+ec_attach(device_t dev)
+{
+ struct ec_softc *sc;
+
+ sc = device_get_softc(dev);
+ sc->dev = dev;
+
+ ec_sc = sc;
+
+ /*
+ * Claim the bus.
+ *
+ * We don't know cases when EC is master,
+ * so hold the bus forever for us.
+ *
+ */
+
+ if (bus_claim(sc) != 0) {
+ return (ENXIO);
+ }
+
+ return (0);
+}
+
+static device_method_t ec_methods[] = {
+ DEVMETHOD(device_probe, ec_probe),
+ DEVMETHOD(device_attach, ec_attach),
+ { 0, 0 }
+};
+
+static driver_t ec_driver = {
+ "chrome_ec",
+ ec_methods,
+ sizeof(struct ec_softc),
+};
+
+static devclass_t ec_devclass;
+
+DRIVER_MODULE(chrome_ec, iicbus, ec_driver, ec_devclass, 0, 0);
+MODULE_VERSION(chrome_ec, 1);
+MODULE_DEPEND(chrome_ec, iicbus, 1, 1, 1);
Added: head/sys/arm/samsung/exynos/chrome_ec.h
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/arm/samsung/exynos/chrome_ec.h Sun Mar 30 15:22:36 2014 (r263936)
@@ -0,0 +1,36 @@
+/*-
+ * Copyright (c) 2014 Ruslan Bukin <br at bsdpad.com>
+ * 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.
+ *
+ * $FreeBSD$
+ */
+
+#define EC_CMD_HELLO 0x01
+#define EC_CMD_GET_VERSION 0x02
+#define EC_CMD_MKBP_STATE 0x60
+#define EC_CMD_VERSION0 0xdc
+
+int ec_command(uint8_t cmd, uint8_t *dout, uint8_t dout_len,
+ uint8_t *dinp, uint8_t dinp_len);
+int ec_hello(void);
Added: head/sys/arm/samsung/exynos/chrome_kb.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/arm/samsung/exynos/chrome_kb.c Sun Mar 30 15:22:36 2014 (r263936)
@@ -0,0 +1,792 @@
+/*-
+ * Copyright (c) 2014 Ruslan Bukin <br at bsdpad.com>
+ * 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.
+ */
+
+/*
+ * Samsung Chromebook Keyboard
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/malloc.h>
+#include <sys/rman.h>
+#include <sys/proc.h>
+#include <sys/sched.h>
+#include <sys/kdb.h>
+#include <sys/timeet.h>
+#include <sys/timetc.h>
+#include <sys/mutex.h>
+#include <sys/gpio.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 <sys/ioccom.h>
+#include <sys/filio.h>
+#include <sys/tty.h>
+#include <sys/kbio.h>
+
+#include <machine/bus.h>
+#include <machine/fdt.h>
+#include <machine/cpu.h>
+#include <machine/intr.h>
+
+#include "gpio_if.h"
+
+#include <arm/samsung/exynos/chrome_ec.h>
+#include <arm/samsung/exynos/chrome_kb.h>
+
+#include <arm/samsung/exynos/exynos5_combiner.h>
+#include <arm/samsung/exynos/exynos5_pad.h>
+
+#define CKB_LOCK() mtx_lock(&Giant)
+#define CKB_UNLOCK() mtx_unlock(&Giant)
+
+#ifdef INVARIANTS
+/*
+ * Assert that the lock is held in all contexts
+ * where the code can be executed.
+ */
+#define CKB_LOCK_ASSERT() mtx_assert(&Giant, MA_OWNED)
+/*
+ * Assert that the lock is held in the contexts
+ * where it really has to be so.
+ */
+#define CKB_CTX_LOCK_ASSERT() \
+ do { \
+ if (!kdb_active && panicstr == NULL) \
+ mtx_assert(&Giant, MA_OWNED); \
+ } while (0)
+#else
+#define CKB_LOCK_ASSERT() (void)0
+#define CKB_CTX_LOCK_ASSERT() (void)0
+#endif
+
+/*
+ * Define a stub keyboard driver in case one hasn't been
+ * compiled into the kernel
+ */
+#include <sys/kbio.h>
+#include <dev/kbd/kbdreg.h>
+#include <dev/kbd/kbdtables.h>
+
+#define CKB_NFKEY 12
+#define CKB_FLAG_COMPOSE 0x1
+#define CKB_FLAG_POLLING 0x2
+#define KBD_DRIVER_NAME "ckbd"
+
+/* TODO: take interrupt from DTS */
+#define KB_GPIO_INT 146
+
+struct ckb_softc {
+ keyboard_t sc_kbd;
+ keymap_t sc_keymap;
+ accentmap_t sc_accmap;
+ fkeytab_t sc_fkeymap[CKB_NFKEY];
+
+ struct resource* sc_mem_res;
+ struct resource* sc_irq_res;
+ void* sc_intr_hl;
+
+ int sc_mode; /* input mode (K_XLATE,K_RAW,K_CODE) */
+ int sc_state; /* shift/lock key state */
+ int sc_accents; /* accent key index (> 0) */
+ int sc_flags; /* flags */
+
+ struct callout sc_repeat_callout;
+ int sc_repeat_key;
+ int sc_repeating;
+
+ int flag;
+ int rows;
+ int cols;
+ device_t dev;
+ struct thread *sc_poll_thread;
+
+ uint8_t *scan_local;
+ uint8_t *scan;
+};
+
+/* prototypes */
+static void ckb_set_leds(struct ckb_softc *, uint8_t);
+static int ckb_set_typematic(keyboard_t *, int);
+static uint32_t ckb_read_char(keyboard_t *, int);
+static void ckb_clear_state(keyboard_t *);
+static int ckb_ioctl(keyboard_t *, u_long, caddr_t);
+static int ckb_enable(keyboard_t *);
+static int ckb_disable(keyboard_t *);
+
+static void
+ckb_repeat(void *arg)
+{
+ struct ckb_softc *sc;
+
+ sc = arg;
+
+ if (KBD_IS_ACTIVE(&sc->sc_kbd) && KBD_IS_BUSY(&sc->sc_kbd)) {
+ if (sc->sc_repeat_key != -1) {
+ sc->sc_repeating = 1;
+ sc->sc_kbd.kb_callback.kc_func(&sc->sc_kbd,
+ KBDIO_KEYINPUT, sc->sc_kbd.kb_callback.kc_arg);
+ }
+ }
+}
+
+/* detect a keyboard, not used */
+static int
+ckb__probe(int unit, void *arg, int flags)
+{
+
+ return (ENXIO);
+}
+
+/* reset and initialize the device, not used */
+static int
+ckb_init(int unit, keyboard_t **kbdp, void *arg, int flags)
+{
+
+ return (ENXIO);
+}
+
+/* test the interface to the device, not used */
+static int
+ckb_test_if(keyboard_t *kbd)
+{
+
+ return (0);
+}
+
+/* finish using this keyboard, not used */
+static int
+ckb_term(keyboard_t *kbd)
+{
+
+ return (ENXIO);
+}
+
+/* keyboard interrupt routine, not used */
+static int
+ckb_intr(keyboard_t *kbd, void *arg)
+{
+
+ return (0);
+}
+
+/* lock the access to the keyboard, not used */
+static int
+ckb_lock(keyboard_t *kbd, int lock)
+{
+
+ return (1);
+}
+
+/* clear the internal state of the keyboard */
+static void
+ckb_clear_state(keyboard_t *kbd)
+{
+ struct ckb_softc *sc;
+
+ sc = kbd->kb_data;
+
+ CKB_CTX_LOCK_ASSERT();
+
+ sc->sc_flags &= ~(CKB_FLAG_COMPOSE | CKB_FLAG_POLLING);
+ sc->sc_state &= LOCK_MASK; /* preserve locking key state */
+ sc->sc_accents = 0;
+}
+
+/* save the internal state, not used */
+static int
+ckb_get_state(keyboard_t *kbd, void *buf, size_t len)
+{
+
+ return (len == 0) ? 1 : -1;
+}
+
+/* set the internal state, not used */
+static int
+ckb_set_state(keyboard_t *kbd, void *buf, size_t len)
+{
+
+ return (EINVAL);
+}
+
+
+/* check if data is waiting */
+static int
+ckb_check(keyboard_t *kbd)
+{
+ struct ckb_softc *sc;
+ int i;
+
+ sc = kbd->kb_data;
+
+ CKB_CTX_LOCK_ASSERT();
+
+ if (!KBD_IS_ACTIVE(kbd))
+ return (0);
+
+ if (sc->sc_flags & CKB_FLAG_POLLING) {
+ return (1);
+ };
+
+ for (i = 0; i < sc->cols; i++)
+ if (sc->scan_local[i] != sc->scan[i]) {
+ return (1);
+ };
+
+ if (sc->sc_repeating)
+ return (1);
+
+ return (0);
+}
+
+/* check if char is waiting */
+static int
+ckb_check_char_locked(keyboard_t *kbd)
+{
+ CKB_CTX_LOCK_ASSERT();
+
+ if (!KBD_IS_ACTIVE(kbd))
+ return (0);
+
+ return (ckb_check(kbd));
+}
+
+static int
+ckb_check_char(keyboard_t *kbd)
+{
+ int result;
+
+ CKB_LOCK();
+ result = ckb_check_char_locked(kbd);
+ CKB_UNLOCK();
+
+ return (result);
+}
+
+/* read one byte from the keyboard if it's allowed */
+/* Currently unused. */
+static int
+ckb_read(keyboard_t *kbd, int wait)
+{
+ CKB_CTX_LOCK_ASSERT();
+
+ if (!KBD_IS_ACTIVE(kbd))
+ return (-1);
+
+ printf("Implement ME: %s\n", __func__);
+ return (0);
+}
+
+int scantokey(int i, int j);
+
+int
+scantokey(int i, int j)
+{
+ int k;
+
+ for (k = 0; k < KEYMAP_LEN; k++)
+ if ((keymap[k].col == i) && (keymap[k].row == j))
+ return (keymap[k].key);
+
+ return (0);
+}
+
+/* read char from the keyboard */
+static uint32_t
+ckb_read_char_locked(keyboard_t *kbd, int wait)
+{
+ struct ckb_softc *sc;
+ int i,j;
+ uint16_t key;
+ int oldbit;
+ int newbit;
+
+ sc = kbd->kb_data;
+
+ CKB_CTX_LOCK_ASSERT();
+
+ if (!KBD_IS_ACTIVE(kbd))
+ return (NOKEY);
+
+ if (sc->sc_repeating) {
+ sc->sc_repeating = 0;
+ callout_reset(&sc->sc_repeat_callout, hz / 10,
+ ckb_repeat, sc);
+ return (sc->sc_repeat_key);
+ };
+
+ if (sc->sc_flags & CKB_FLAG_POLLING) {
+ /* TODO */
+ };
+
+ for (i = 0; i < sc->cols; i++) {
+ for (j = 0; j < sc->rows; j++) {
+ oldbit = (sc->scan_local[i] & (1 << j));
+ newbit = (sc->scan[i] & (1 << j));
+
+ if (oldbit == newbit)
+ continue;
+
+ key = scantokey(i,j);
+ if (key == 0) {
+ continue;
+ };
+
+ if (newbit > 0) {
+ /* key pressed */
+ sc->scan_local[i] |= (1 << j);
+
+ /* setup repeating */
+ sc->sc_repeat_key = key;
+ callout_reset(&sc->sc_repeat_callout,
+ hz / 2, ckb_repeat, sc);
+
+ } else {
+ /* key released */
+ sc->scan_local[i] &= ~(1 << j);
+
+ /* release flag */
+ key |= 0x80;
+
+ /* unsetup repeating */
+ sc->sc_repeat_key = -1;
+ callout_stop(&sc->sc_repeat_callout);
+ }
+
+ return (key);
+ }
+ }
+
+ return (NOKEY);
+}
+
+/* Currently wait is always false. */
+static uint32_t
+ckb_read_char(keyboard_t *kbd, int wait)
+{
+ uint32_t keycode;
+
+ CKB_LOCK();
+ keycode = ckb_read_char_locked(kbd, wait);
+ CKB_UNLOCK();
+
+ return (keycode);
+}
+
+
+/* some useful control functions */
+static int
+ckb_ioctl_locked(keyboard_t *kbd, u_long cmd, caddr_t arg)
+{
+ struct ckb_softc *sc;
+ int i;
+
+ sc = kbd->kb_data;
+
+ CKB_LOCK_ASSERT();
+
+ switch (cmd) {
+ case KDGKBMODE: /* get keyboard mode */
+ *(int *)arg = sc->sc_mode;
+ break;
+
+ case KDSKBMODE: /* set keyboard mode */
+ switch (*(int *)arg) {
+ case K_XLATE:
+ if (sc->sc_mode != K_XLATE) {
+ /* make lock key state and LED state match */
+ sc->sc_state &= ~LOCK_MASK;
+ sc->sc_state |= KBD_LED_VAL(kbd);
+ }
+ /* FALLTHROUGH */
+ case K_RAW:
+ case K_CODE:
+ if (sc->sc_mode != *(int *)arg) {
+ if ((sc->sc_flags & CKB_FLAG_POLLING) == 0)
+ ckb_clear_state(kbd);
+ sc->sc_mode = *(int *)arg;
+ }
+ break;
+ default:
+ return (EINVAL);
+ }
+ break;
+
+ case KDGETLED: /* get keyboard LED */
+ *(int *)arg = KBD_LED_VAL(kbd);
+ break;
+
+ case KDSETLED: /* set keyboard LED */
+ /* NOTE: lock key state in "sc_state" won't be changed */
+ if (*(int *)arg & ~LOCK_MASK)
+ return (EINVAL);
+
+ i = *(int *)arg;
+
+ /* replace CAPS LED with ALTGR LED for ALTGR keyboards */
+ if (sc->sc_mode == K_XLATE &&
+ kbd->kb_keymap->n_keys > ALTGR_OFFSET) {
+ if (i & ALKED)
+ i |= CLKED;
+ else
+ i &= ~CLKED;
+ }
+ if (KBD_HAS_DEVICE(kbd)) {
+ /* Configure LED */
+ }
+
+ KBD_LED_VAL(kbd) = *(int *)arg;
+ break;
+ case KDGKBSTATE: /* get lock key state */
+ *(int *)arg = sc->sc_state & LOCK_MASK;
+ break;
+
+ case KDSKBSTATE: /* set lock key state */
+ if (*(int *)arg & ~LOCK_MASK) {
+ return (EINVAL);
+ }
+ sc->sc_state &= ~LOCK_MASK;
+ sc->sc_state |= *(int *)arg;
+
+ /* set LEDs and quit */
+ return (ckb_ioctl(kbd, KDSETLED, arg));
+
+ case KDSETREPEAT: /* set keyboard repeat rate (new
+ * interface) */
+
+ if (!KBD_HAS_DEVICE(kbd)) {
+ return (0);
+ }
+ if (((int *)arg)[1] < 0) {
+ return (EINVAL);
+ }
+ if (((int *)arg)[0] < 0) {
+ return (EINVAL);
+ }
+ if (((int *)arg)[0] < 200) /* fastest possible value */
+ kbd->kb_delay1 = 200;
+ else
+ kbd->kb_delay1 = ((int *)arg)[0];
+ kbd->kb_delay2 = ((int *)arg)[1];
+ return (0);
+
+ case KDSETRAD: /* set keyboard repeat rate (old
+ * interface) */
+ return (ckb_set_typematic(kbd, *(int *)arg));
+
+ case PIO_KEYMAP: /* set keyboard translation table */
+ case OPIO_KEYMAP: /* set keyboard translation table
+ * (compat) */
+ case PIO_KEYMAPENT: /* set keyboard translation table
+ * entry */
+ case PIO_DEADKEYMAP: /* set accent key translation table */
+ sc->sc_accents = 0;
+ /* FALLTHROUGH */
+ default:
+ return (genkbd_commonioctl(kbd, cmd, arg));
+ }
+
+ return (0);
+}
+
+static int
+ckb_ioctl(keyboard_t *kbd, u_long cmd, caddr_t arg)
+{
+ int result;
+
+ /*
+ * XXX KDGKBSTATE, KDSKBSTATE and KDSETLED can be called from any
+ * context where printf(9) can be called, which among other things
+ * includes interrupt filters and threads with any kinds of locks
+ * already held. For this reason it would be dangerous to acquire
+ * the Giant here unconditionally. On the other hand we have to
+ * have it to handle the ioctl.
+ * So we make our best effort to auto-detect whether we can grab
+ * the Giant or not. Blame syscons(4) for this.
+ */
+ switch (cmd) {
+ case KDGKBSTATE:
+ case KDSKBSTATE:
+ case KDSETLED:
+ if (!mtx_owned(&Giant) && !SCHEDULER_STOPPED())
+ return (EDEADLK); /* best I could come up with */
+ /* FALLTHROUGH */
+ default:
+ CKB_LOCK();
+ result = ckb_ioctl_locked(kbd, cmd, arg);
+ CKB_UNLOCK();
+ return (result);
+ }
+}
+
+
+/*
+ * Enable the access to the device; until this function is called,
+ * the client cannot read from the keyboard.
+ */
+static int
+ckb_enable(keyboard_t *kbd)
+{
+
+ CKB_LOCK();
+ KBD_ACTIVATE(kbd);
+ CKB_UNLOCK();
+
+ return (0);
+}
+
+/* disallow the access to the device */
+static int
+ckb_disable(keyboard_t *kbd)
+{
+
+ CKB_LOCK();
+ KBD_DEACTIVATE(kbd);
+ CKB_UNLOCK();
+
+ return (0);
+}
+
+/* local functions */
+
+static int
+ckb_set_typematic(keyboard_t *kbd, int code)
+{
+ static const int delays[] = {250, 500, 750, 1000};
+ static const int rates[] = {34, 38, 42, 46, 50, 55, 59, 63,
+ 68, 76, 84, 92, 100, 110, 118, 126,
+ 136, 152, 168, 184, 200, 220, 236, 252,
+ 272, 304, 336, 368, 400, 440, 472, 504};
+
+ if (code & ~0x7f) {
+ return (EINVAL);
+ }
+ kbd->kb_delay1 = delays[(code >> 5) & 3];
+ kbd->kb_delay2 = rates[code & 0x1f];
+ return (0);
+}
+
+static int
+ckb_poll(keyboard_t *kbd, int on)
+{
+ struct ckb_softc *sc;
+
+ sc = kbd->kb_data;
+
+ CKB_LOCK();
+ if (on) {
+ sc->sc_flags |= CKB_FLAG_POLLING;
+ sc->sc_poll_thread = curthread;
+ } else {
+ sc->sc_flags &= ~CKB_FLAG_POLLING;
+ }
+ CKB_UNLOCK();
+
+ return (0);
+}
+
+/* local functions */
+
+static int dummy_kbd_configure(int flags);
+
+keyboard_switch_t ckbdsw = {
+ .probe = &ckb__probe,
+ .init = &ckb_init,
+ .term = &ckb_term,
+ .intr = &ckb_intr,
+ .test_if = &ckb_test_if,
+ .enable = &ckb_enable,
+ .disable = &ckb_disable,
+ .read = &ckb_read,
+ .check = &ckb_check,
+ .read_char = &ckb_read_char,
+ .check_char = &ckb_check_char,
+ .ioctl = &ckb_ioctl,
+ .lock = &ckb_lock,
+ .clear_state = &ckb_clear_state,
+ .get_state = &ckb_get_state,
+ .set_state = &ckb_set_state,
+ .get_fkeystr = &genkbd_get_fkeystr,
+ .poll = &ckb_poll,
+ .diag = &genkbd_diag,
+};
+
+static int
+dummy_kbd_configure(int flags)
+{
+
+ return (0);
+}
+
+KEYBOARD_DRIVER(ckbd, ckbdsw, dummy_kbd_configure);
+
+static int
+parse_dts(struct ckb_softc *sc)
+{
+ phandle_t node;
+ pcell_t dts_value;
+ int len;
+
+ if ((node = ofw_bus_get_node(sc->dev)) == -1)
+ return (ENXIO);
+
+ if ((len = OF_getproplen(node, "keypad,num-rows")) <= 0)
+ return (ENXIO);
+ OF_getprop(node, "keypad,num-rows", &dts_value, len);
+ sc->rows = fdt32_to_cpu(dts_value);
+
+ if ((len = OF_getproplen(node, "keypad,num-columns")) <= 0)
+ return (ENXIO);
+ OF_getprop(node, "keypad,num-columns", &dts_value, len);
+ sc->cols = fdt32_to_cpu(dts_value);
+
+ if ((sc->rows == 0) || (sc->cols == 0))
+ return (ENXIO);
+
+ return (0);
+}
+
*** DIFF OUTPUT TRUNCATED AT 1000 LINES ***
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