diff options
Diffstat (limited to 'sys/arm/samsung/exynos/chrome_kb.c')
| -rw-r--r-- | sys/arm/samsung/exynos/chrome_kb.c | 915 |
1 files changed, 915 insertions, 0 deletions
diff --git a/sys/arm/samsung/exynos/chrome_kb.c b/sys/arm/samsung/exynos/chrome_kb.c new file mode 100644 index 000000000000..972ff81483d6 --- /dev/null +++ b/sys/arm/samsung/exynos/chrome_kb.c @@ -0,0 +1,915 @@ +/*- + * Copyright (c) 2014 Ruslan Bukin <br@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/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/kbio.h> + +#include <machine/bus.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 && !KERNEL_PANICKED()) \ + 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" + +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; + int gpio; + device_t dev; + device_t gpio_dev; + struct thread *sc_poll_thread; + uint16_t *keymap; + + uint8_t *scan_local; + uint8_t *scan; +}; + +/* prototypes */ +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); +} + +static uint16_t +keymap_read(struct ckb_softc *sc, int col, int row) +{ + + KASSERT(sc->keymap != NULL, ("keymap_read: no keymap")); + if (col >= 0 && col < sc->cols && + row >= 0 && row < sc->rows) { + return sc->keymap[row * sc->cols + col]; + } + + return (0); +} + +static int +keymap_write(struct ckb_softc *sc, int col, int row, uint16_t key) +{ + + KASSERT(sc->keymap != NULL, ("keymap_write: no keymap")); + if (col >= 0 && col < sc->cols && + row >= 0 && row < sc->rows) { + sc->keymap[row * sc->cols + col] = key; + return (0); + } + + return (-1); +} + +/* 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; + int status; + + 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) { + for (;;) { + GPIO_PIN_GET(sc->gpio_dev, sc->gpio, &status); + if (status == 0) { + if (ec_command(EC_CMD_MKBP_STATE, sc->scan, + sc->cols, + sc->scan, sc->cols)) { + return (NOKEY); + } + break; + } + if (!wait) { + return (NOKEY); + } + DELAY(1000); + } + } + + 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 = keymap_read(sc, 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, + .poll = &ckb_poll, +}; + +static int +dummy_kbd_configure(int flags) +{ + + return (0); +} + +KEYBOARD_DRIVER(ckbd, ckbdsw, dummy_kbd_configure); + +/* + * Parses 'keymap' into sc->keymap. + * Requires sc->cols and sc->rows to be set. + */ +static int +parse_keymap(struct ckb_softc *sc, pcell_t *keymap, size_t len) +{ + int i; + + sc->keymap = malloc(sc->cols * sc->rows * sizeof(sc->keymap[0]), + M_DEVBUF, M_NOWAIT | M_ZERO); + if (sc->keymap == NULL) { + return (ENOMEM); + } + + for (i = 0; i < len; i++) { + /* + * Return value is ignored, we just write whatever fits into + * specified number of rows and columns and silently ignore + * everything else. + * Keymap entries follow this format: 0xRRCCKKKK + * RR - row number, CC - column number, KKKK - key code + */ + keymap_write(sc, (keymap[i] >> 16) & 0xff, + (keymap[i] >> 24) & 0xff, + keymap[i] & 0xffff); + } + + return (0); +} + +/* Allocates a new array for keymap and returns it in 'keymap'. */ +static int +read_keymap(phandle_t node, const char *prop, pcell_t **keymap, size_t *len) +{ + + if ((*len = OF_getproplen(node, prop)) <= 0) { + return (ENXIO); + } + if ((*keymap = malloc(*len, M_DEVBUF, M_NOWAIT)) == NULL) { + return (ENOMEM); + } + if (OF_getencprop(node, prop, *keymap, *len) != *len) { + return (ENXIO); + } + return (0); +} + +static int +parse_dts(struct ckb_softc *sc) +{ + phandle_t node; + pcell_t dts_value; + pcell_t *keymap; + int len, ret; + const char *keymap_prop = NULL; + + if ((node = ofw_bus_get_node(sc->dev)) == -1) + return (ENXIO); + + if ((len = OF_getproplen(node, "google,key-rows")) <= 0) + return (ENXIO); + OF_getencprop(node, "google,key-rows", &dts_value, len); + sc->rows = dts_value; + + if ((len = OF_getproplen(node, "google,key-columns")) <= 0) + return (ENXIO); + OF_getencprop(node, "google,key-columns", &dts_value, len); + sc->cols = dts_value; + + if ((len = OF_getproplen(node, "freebsd,intr-gpio")) <= 0) + return (ENXIO); + OF_getencprop(node, "freebsd,intr-gpio", &dts_value, len); + sc->gpio = dts_value; + + if (OF_hasprop(node, "freebsd,keymap")) { + keymap_prop = "freebsd,keymap"; + device_printf(sc->dev, "using FreeBSD-specific keymap from FDT\n"); + } else if (OF_hasprop(node, "linux,keymap")) { + keymap_prop = "linux,keymap"; + device_printf(sc->dev, "using Linux keymap from FDT\n"); + } else { + device_printf(sc->dev, "using built-in keymap\n"); + } + + if (keymap_prop != NULL) { + if ((ret = read_keymap(node, keymap_prop, &keymap, &len))) { + device_printf(sc->dev, + "failed to read keymap from FDT: %d\n", ret); + return (ret); + } + ret = parse_keymap(sc, keymap, len); + free(keymap, M_DEVBUF); + if (ret) { + return (ret); + } + } else { + if ((ret = parse_keymap(sc, default_keymap, KEYMAP_LEN))) { + return (ret); + } + } + + if ((sc->rows == 0) || (sc->cols == 0) || (sc->gpio == 0)) + return (ENXIO); + + return (0); +} + +void +ckb_ec_intr(void *arg) +{ + struct ckb_softc *sc; + + sc = arg; + + if (sc->sc_flags & CKB_FLAG_POLLING) + return; + + ec_command(EC_CMD_MKBP_STATE, sc->scan, sc->cols, + sc->scan, sc->cols); + + (sc->sc_kbd.kb_callback.kc_func) (&sc->sc_kbd, KBDIO_KEYINPUT, + sc->sc_kbd.kb_callback.kc_arg); +}; + +static int +chrome_kb_attach(device_t dev) +{ + struct ckb_softc *sc; + keyboard_t *kbd; + int error; + int rid; + int i; + + sc = device_get_softc(dev); + + sc->dev = dev; + sc->keymap = NULL; + + if ((error = parse_dts(sc)) != 0) + return error; + + sc->gpio_dev = devclass_get_device(devclass_find("gpio"), 0); + if (sc->gpio_dev == NULL) { + device_printf(sc->dev, "Can't find gpio device.\n"); + return (ENXIO); + } + +#if 0 + device_printf(sc->dev, "Keyboard matrix [%dx%d]\n", + sc->cols, sc->rows); +#endif + + pad_setup_intr(sc->gpio, ckb_ec_intr, sc); + + kbd = &sc->sc_kbd; + rid = 0; + + sc->scan_local = malloc(sc->cols, M_DEVBUF, M_NOWAIT); + sc->scan = malloc(sc->cols, M_DEVBUF, M_NOWAIT); + + for (i = 0; i < sc->cols; i++) { + sc->scan_local[i] = 0; + sc->scan[i] = 0; + } + + kbd_init_struct(kbd, KBD_DRIVER_NAME, KB_OTHER, + device_get_unit(dev), 0, 0, 0); + kbd->kb_data = (void *)sc; + + sc->sc_keymap = key_map; + sc->sc_accmap = accent_map; + for (i = 0; i < CKB_NFKEY; i++) { + sc->sc_fkeymap[i] = fkey_tab[i]; + } + + kbd_set_maps(kbd, &sc->sc_keymap, &sc->sc_accmap, + sc->sc_fkeymap, CKB_NFKEY); + + KBD_FOUND_DEVICE(kbd); + ckb_clear_state(kbd); + KBD_PROBE_DONE(kbd); + + callout_init(&sc->sc_repeat_callout, 0); + + KBD_INIT_DONE(kbd); + + if (kbd_register(kbd) < 0) { + return (ENXIO); + } + KBD_CONFIG_DONE(kbd); + + return (0); +} + +static int +chrome_kb_probe(device_t dev) +{ + + if (!ofw_bus_status_okay(dev)) + return (ENXIO); + + if (ofw_bus_is_compatible(dev, "google,cros-ec-keyb") || + ofw_bus_is_compatible(dev, "google,mkbp-keyb")) { + device_set_desc(dev, "Chrome EC Keyboard"); + return (BUS_PROBE_DEFAULT); + } + + return (ENXIO); +} + +static int +chrome_kb_detach(device_t dev) +{ + struct ckb_softc *sc; + + sc = device_get_softc(dev); + + if (sc->keymap != NULL) { + free(sc->keymap, M_DEVBUF); + } + + return 0; +} + +static device_method_t chrome_kb_methods[] = { + DEVMETHOD(device_probe, chrome_kb_probe), + DEVMETHOD(device_attach, chrome_kb_attach), + DEVMETHOD(device_detach, chrome_kb_detach), + { 0, 0 } +}; + +static driver_t chrome_kb_driver = { + "chrome_kb", + chrome_kb_methods, + sizeof(struct ckb_softc), +}; + +static devclass_t chrome_kb_devclass; + +DRIVER_MODULE(chrome_kb, simplebus, chrome_kb_driver, + chrome_kb_devclass, 0, 0); |