--- /dev/null
+/* $OpenBSD: acrtc.c,v 1.1 2017/12/16 10:22:13 kettenis Exp $ */
+/*
+ * Copyright (c) 2017 Mark Kettenis <kettenis@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+#include <sys/malloc.h>
+
+#include <dev/fdt/rsbvar.h>
+
+#include <dev/ofw/openfirm.h>
+#include <dev/ofw/fdt.h>
+
+#include <dev/clock_subr.h>
+
+#define isleap(y) ((((y) % 4) == 0 && ((y) % 100) != 0) || ((y) % 400) == 0)
+
+extern todr_chip_handle_t todr_handle;
+
+#define RTC_CTRL 0xc7
+#define RTC_CTRL_12H_24H_MODE (1 << 0)
+#define RTC_SEC 0xc8
+#define RTC_MIN 0xc9
+#define RTC_HOU 0xca
+#define RTC_WEE 0xcb
+#define RTC_DAY 0xcc
+#define RTC_MON 0xcd
+#define RTC_YEA 0xce
+#define RTC_YEA_LEAP_YEAR (1 << 15)
+#define RTC_UPD_TRIG 0xcf
+#define RTC_UPD_TRIG_UPDATE (1 << 15)
+
+struct acrtc_softc {
+ struct device sc_dev;
+ void *sc_cookie;
+ uint16_t sc_rta;
+
+ struct todr_chip_handle sc_todr;
+};
+
+int acrtc_match(struct device *, void *, void *);
+void acrtc_attach(struct device *, struct device *, void *);
+
+struct cfattach acrtc_ca = {
+ sizeof(struct acrtc_softc), acrtc_match, acrtc_attach
+};
+
+struct cfdriver acrtc_cd = {
+ NULL, "acrtc", DV_DULL
+};
+
+int acrtc_clock_read(struct acrtc_softc *, struct clock_ymdhms *);
+int acrtc_clock_write(struct acrtc_softc *, struct clock_ymdhms *);
+int acrtc_gettime(struct todr_chip_handle *, struct timeval *);
+int acrtc_settime(struct todr_chip_handle *, struct timeval *);
+
+int
+acrtc_match(struct device *parent, void *match, void *aux)
+{
+ struct rsb_attach_args *ra = aux;
+
+ if (strcmp(ra->ra_name, "x-powers,ac100") == 0)
+ return 1;
+ return 0;
+}
+
+void
+acrtc_attach(struct device *parent, struct device *self, void *aux)
+{
+ struct acrtc_softc *sc = (struct acrtc_softc *)self;
+ struct rsb_attach_args *ra = aux;
+
+ sc->sc_cookie = ra->ra_cookie;
+ sc->sc_rta = ra->ra_rta;
+
+ printf("\n");
+
+ sc->sc_todr.cookie = sc;
+ sc->sc_todr.todr_gettime = acrtc_gettime;
+ sc->sc_todr.todr_settime = acrtc_settime;
+ todr_handle = &sc->sc_todr;
+}
+
+inline uint16_t
+acrtc_read_reg(struct acrtc_softc *sc, uint8_t reg)
+{
+ return rsb_read_2(sc->sc_cookie, sc->sc_rta, reg);
+}
+
+inline void
+acrtc_write_reg(struct acrtc_softc *sc, uint8_t reg, uint16_t value)
+{
+ rsb_write_2(sc->sc_cookie, sc->sc_rta, reg, value);
+}
+
+int
+acrtc_gettime(struct todr_chip_handle *handle, struct timeval *tv)
+{
+ struct acrtc_softc *sc = handle->cookie;
+ struct clock_ymdhms dt;
+ int error;
+
+ error = acrtc_clock_read(sc, &dt);
+ if (error)
+ return error;
+
+ if (dt.dt_sec > 59 || dt.dt_min > 59 || dt.dt_hour > 23 ||
+ dt.dt_day > 31 || dt.dt_day == 0 ||
+ dt.dt_mon > 12 || dt.dt_mon == 0 ||
+ dt.dt_year < POSIX_BASE_YEAR)
+ return EINVAL;
+
+ tv->tv_sec = clock_ymdhms_to_secs(&dt);
+ tv->tv_usec = 0;
+ return 0;
+}
+
+int
+acrtc_settime(struct todr_chip_handle *handle, struct timeval *tv)
+{
+ struct acrtc_softc *sc = handle->cookie;
+ struct clock_ymdhms dt;
+
+ clock_secs_to_ymdhms(tv->tv_sec, &dt);
+
+ return acrtc_clock_write(sc, &dt);
+}
+
+int
+acrtc_clock_read(struct acrtc_softc *sc, struct clock_ymdhms *dt)
+{
+ uint16_t ctrl;
+
+ dt->dt_sec = FROMBCD(acrtc_read_reg(sc, RTC_SEC));
+ dt->dt_min = FROMBCD(acrtc_read_reg(sc, RTC_MIN));
+ dt->dt_hour = FROMBCD(acrtc_read_reg(sc, RTC_HOU));
+ dt->dt_day = FROMBCD(acrtc_read_reg(sc, RTC_DAY));
+ dt->dt_mon = FROMBCD(acrtc_read_reg(sc, RTC_MON));
+ dt->dt_year = FROMBCD(acrtc_read_reg(sc, RTC_YEA)) + 2000;
+
+#ifdef DEBUG
+ printf("%02d/%02d/%04d %02d:%02d:%0d\n", dt->dt_day, dt->dt_mon,
+ dt->dt_year, dt->dt_hour, dt->dt_min, dt->dt_sec);
+#endif
+
+ /* Consider the time to be invalid if the clock is in 12H mode. */
+ ctrl = acrtc_read_reg(sc, RTC_CTRL);
+ if ((ctrl & RTC_CTRL_12H_24H_MODE) == 0)
+ return EINVAL;
+
+ return 0;
+}
+
+int
+acrtc_clock_write(struct acrtc_softc *sc, struct clock_ymdhms *dt)
+{
+ uint16_t leap = isleap(dt->dt_year) ? RTC_YEA_LEAP_YEAR : 0;
+
+ acrtc_write_reg(sc, RTC_SEC, TOBCD(dt->dt_sec));
+ acrtc_write_reg(sc, RTC_MIN, TOBCD(dt->dt_min));
+ acrtc_write_reg(sc, RTC_HOU, TOBCD(dt->dt_hour));
+ acrtc_write_reg(sc, RTC_WEE, TOBCD(dt->dt_wday));
+ acrtc_write_reg(sc, RTC_DAY, TOBCD(dt->dt_day));
+ acrtc_write_reg(sc, RTC_MON, TOBCD(dt->dt_mon));
+ acrtc_write_reg(sc, RTC_YEA, TOBCD(dt->dt_year - 2000) | leap);
+ acrtc_write_reg(sc, RTC_UPD_TRIG, RTC_UPD_TRIG_UPDATE);
+
+ /* Switch to 24H mode to indicate the time is now valid. */
+ acrtc_write_reg(sc, RTC_CTRL, RTC_CTRL_12H_24H_MODE);
+
+ return 0;
+}
--- /dev/null
+/* $OpenBSD: sxirsb.c,v 1.1 2017/12/16 10:22:13 kettenis Exp $ */
+/*
+ * Copyright (c) 2017 Mark kettenis <kettenis@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+
+#include <machine/bus.h>
+#include <machine/fdt.h>
+
+#include <dev/fdt/rsbvar.h>
+
+#include <dev/ofw/openfirm.h>
+#include <dev/ofw/ofw_clock.h>
+#include <dev/ofw/ofw_pinctrl.h>
+#include <dev/ofw/fdt.h>
+
+#define RSB_CTRL 0x0000
+#define RSB_CTRL_START_TRANS (1 << 7)
+#define RSB_CTRL_ABORT_TRANS (1 << 6)
+#define RSB_CTRL_GLOBAL_INT_ENB (1 << 1)
+#define RSB_CTRL_SOFT_RESET (1 << 0)
+#define RSB_CCR 0x0004
+#define RSB_CCR_CD_ODLY_SHIFT 8
+#define RSB_CCR_CD_ODLY_MAX 0x7
+#define RSB_CCR_CK_DIV_SHIFT 0
+#define RSB_CCR_CK_DIV_MAX 0xff
+#define RSB_STAT 0x000c
+#define RSB_STAT_TRANS_OVER (1 << 0)
+#define RSB_AR 0x0010
+#define RSB_DATA 0x001c
+#define RSB_DMCR 0x0028
+#define RSB_DMCR_DEVICE_MODE_START (1U << 31)
+#define RSB_DMCR_DEVICE_MODE_DATA 0x7e3e00
+#define RSB_CMD 0x002c
+#define RSB_DAR 0x0030
+
+#define SRTA 0xe8
+#define RD8 0x8b
+#define RD16 0x9c
+#define RD32 0xa6
+#define WR8 0x4e
+#define WR16 0x59
+#define WR32 0x63
+
+#define HREAD4(sc, reg) \
+ (bus_space_read_4((sc)->sc_iot, (sc)->sc_ioh, (reg)))
+#define HWRITE4(sc, reg, val) \
+ bus_space_write_4((sc)->sc_iot, (sc)->sc_ioh, (reg), (val))
+#define HSET4(sc, reg, bits) \
+ HWRITE4((sc), (reg), HREAD4((sc), (reg)) | (bits))
+#define HCLR4(sc, reg, bits) \
+ HWRITE4((sc), (reg), HREAD4((sc), (reg)) & ~(bits))
+
+struct sxirsb_softc {
+ struct device sc_dev;
+ bus_space_tag_t sc_iot;
+ bus_space_handle_t sc_ioh;
+
+ int sc_addr;
+};
+
+int sxirsb_match(struct device *, void *, void *);
+void sxirsb_attach(struct device *, struct device *, void *);
+
+struct cfattach sxirsb_ca = {
+ sizeof(struct sxirsb_softc), sxirsb_match, sxirsb_attach
+};
+
+struct cfdriver sxirsb_cd = {
+ NULL, "sxirsb", DV_DULL
+};
+
+uint8_t sxirsb_rta(uint16_t);
+
+int
+sxirsb_match(struct device *parent, void *match, void *aux)
+{
+ struct fdt_attach_args *faa = aux;
+
+ return OF_is_compatible(faa->fa_node, "allwinner,sun8i-a23-rsb");
+}
+
+void
+sxirsb_attach(struct device *parent, struct device *self, void *aux)
+{
+ struct sxirsb_softc *sc = (struct sxirsb_softc *)self;
+ struct fdt_attach_args *faa = aux;
+ uint32_t freq, parent_freq, div, odly;
+ struct rsb_attach_args ra;
+ char name[32];
+ uint32_t reg;
+ uint8_t rta;
+ int node;
+ int timo;
+
+ if (faa->fa_nreg < 1) {
+ printf(": no registers\n");
+ return;
+ }
+
+ sc->sc_iot = faa->fa_iot;
+ if (bus_space_map(sc->sc_iot, faa->fa_reg[0].addr,
+ faa->fa_reg[0].size, 0, &sc->sc_ioh)) {
+ printf(": can't map registers\n");
+ return;
+ }
+
+ pinctrl_byname(faa->fa_node, "default");
+
+ clock_enable_all(faa->fa_node);
+ reset_deassert_all(faa->fa_node);
+
+ HWRITE4(sc, RSB_CTRL, RSB_CTRL_SOFT_RESET);
+ for (timo = 1000; timo > 0; timo--) {
+ if ((HREAD4(sc, RSB_CTRL) & RSB_CTRL_SOFT_RESET) == 0)
+ break;
+ delay(100);
+ }
+ if (timo == 0) {
+ printf(": reset failed\n");
+ return;
+ }
+
+ freq = OF_getpropint(faa->fa_node, "clock-frequency", 3000000);
+ parent_freq = clock_get_frequency_idx(faa->fa_node, 0);
+ div = parent_freq / freq / 2;
+ if (div == 0)
+ div = 1;
+ if (div > (RSB_CCR_CK_DIV_MAX + 1))
+ div = (RSB_CCR_CK_DIV_MAX + 1);
+ odly = div >> 1;
+ if (odly == 0)
+ odly = 1;
+ if (odly > RSB_CCR_CD_ODLY_MAX)
+ odly = RSB_CCR_CD_ODLY_MAX;
+ HWRITE4(sc, RSB_CCR, (odly << RSB_CCR_CD_ODLY_SHIFT) |
+ ((div - 1) << RSB_CCR_CK_DIV_SHIFT));
+
+ HWRITE4(sc, RSB_DMCR, RSB_DMCR_DEVICE_MODE_START |
+ RSB_DMCR_DEVICE_MODE_DATA);
+ for (timo = 1000; timo > 0; timo--) {
+ if ((HREAD4(sc, RSB_DMCR) & RSB_DMCR_DEVICE_MODE_START) == 0)
+ break;
+ delay(100);
+ }
+ if (timo == 0) {
+ printf(": mode switch failed\n");
+ return;
+ }
+
+ for (node = OF_child(faa->fa_node); node; node = OF_peer(node)) {
+ reg = OF_getpropint(node, "reg", 0);
+ if (reg == 0)
+ continue;
+
+ rta = sxirsb_rta(reg);
+ HWRITE4(sc, RSB_CMD, SRTA);
+ HWRITE4(sc, RSB_DAR, (rta << 16 | reg));
+
+ HSET4(sc, RSB_CTRL, RSB_CTRL_START_TRANS);
+ for (timo = 1000; timo > 0; timo--) {
+ if ((HREAD4(sc, RSB_CTRL) & RSB_CTRL_START_TRANS) == 0)
+ break;
+ delay(10);
+ }
+ if (timo == 0) {
+ printf(": SRTA failed for device 0x%03x\n", reg);
+ return;
+ }
+ }
+
+ printf("\n");
+
+ for (node = OF_child(faa->fa_node); node; node = OF_peer(node)) {
+ reg = OF_getpropint(node, "reg", 0);
+ if (reg == 0)
+ continue;
+
+ memset(name, 0, sizeof(name));
+ if (OF_getprop(node, "compatible", name, sizeof(name)) == -1)
+ continue;
+ if (name[0] == '\0')
+ continue;
+
+ memset(&ra, 0, sizeof(ra));
+ ra.ra_cookie = sc;
+ ra.ra_da = reg;
+ ra.ra_rta = sxirsb_rta(reg);
+ ra.ra_name = name;
+ ra.ra_node = node;
+ config_found(self, &ra, rsb_print);
+ }
+}
+
+/*
+ * Use a fixed device address to run-time address mapping. This keeps
+ * things simple and matches what Linux does.
+ */
+
+struct rsb_addr_map {
+ uint16_t da;
+ uint8_t rta;
+};
+
+struct rsb_addr_map rsb_addr_map[] = {
+ { 0x3a3, 0x2d },
+ { 0x745, 0x3a },
+ { 0xe89, 0x4e }
+};
+
+uint8_t
+sxirsb_rta(uint16_t da)
+{
+ int i;
+
+ for (i = 0; i < nitems(rsb_addr_map); i++) {
+ if (rsb_addr_map[i].da == da)
+ return rsb_addr_map[i].rta;
+ }
+
+ return 0;
+}
+
+uint16_t
+rsb_read_2(void *cookie, uint8_t rta, uint8_t addr)
+{
+ struct sxirsb_softc *sc = cookie;
+ uint16_t stat;
+ int timo;
+
+ HWRITE4(sc, RSB_CMD, RD16);
+ HWRITE4(sc, RSB_DAR, rta << 16);
+ HWRITE4(sc, RSB_AR, addr);
+
+ HSET4(sc, RSB_CTRL, RSB_CTRL_START_TRANS);
+ for (timo = 1000; timo > 0; timo--) {
+ if ((HREAD4(sc, RSB_CTRL) & RSB_CTRL_START_TRANS) == 0)
+ break;
+ delay(10);
+ }
+ stat = HREAD4(sc, RSB_STAT);
+ HWRITE4(sc, RSB_STAT, stat);
+ if (timo == 0 || stat != RSB_STAT_TRANS_OVER) {
+ printf(": RD16 failed for run-time address 0x%02x\n", rta);
+ return 0xff;
+ }
+
+ return HREAD4(sc, RSB_DATA);
+}
+
+void
+rsb_write_2(void *cookie, uint8_t rta, uint8_t addr, uint16_t data)
+{
+ struct sxirsb_softc *sc = cookie;
+ uint16_t stat;
+ int timo;
+
+ HWRITE4(sc, RSB_CMD, WR16);
+ HWRITE4(sc, RSB_DAR, rta << 16);
+ HWRITE4(sc, RSB_AR, addr);
+ HWRITE4(sc, RSB_DATA, data);
+
+ HSET4(sc, RSB_CTRL, RSB_CTRL_START_TRANS);
+ for (timo = 1000; timo > 0; timo--) {
+ if ((HREAD4(sc, RSB_CTRL) & RSB_CTRL_START_TRANS) == 0)
+ break;
+ delay(10);
+ }
+ stat = HREAD4(sc, RSB_STAT);
+ HWRITE4(sc, RSB_STAT, stat);
+ if (timo == 0 || stat != RSB_STAT_TRANS_OVER) {
+ printf(": WR16 failed for run-time address 0x%02x\n", rta);
+ return;
+ }
+}
+
+int
+rsb_print(void *aux, const char *pnp)
+{
+ struct rsb_attach_args *ra = aux;
+
+ if (pnp != NULL)
+ printf("\"%s\" at %s", ra->ra_name, pnp);
+ printf(" addr 0x%x", ra->ra_da);
+
+ return (UNCONF);
+}
projects / openbsd / commitdiff