/* $NetBSD: ac100.c,v 1.4 2019/07/27 16:02:27 thorpej Exp $ */
/*-
* Copyright (c) 2014 Jared D. McNeill <jmcneill@invisible.ca>
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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 "opt_fdt.h"
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ac100.c,v 1.4 2019/07/27 16:02:27 thorpej Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/conf.h>
#include <sys/bus.h>
#include <sys/kmem.h>
#include <dev/clock_subr.h>
#include <dev/i2c/i2cvar.h>
#ifdef FDT
#include <dev/fdt/fdtvar.h>
#endif
#define AC100_CHIP_AUDIO_RST_REG 0x00
#define AC100_PLL_CTRL1_REG 0x02
#define AC100_PLL_CTRL2_REG 0x03
#define AC100_SYSCLK_CTRL_REG 0x04
#define AC100_MOD_RST_CTRL_REG 0x05
#define AC100_ADDA_SR_CTRL_REG 0x06
#define AC100_I2S1_LCK_CTRL_REG 0x10
#define AC100_I2S1_SDIN_CTRL_REG 0x11
#define AC100_I2S1_SDOUT_CTRL_REG 0x12
#define AC100_I2S1_DIG_MIXER_REG 0x13
#define AC100_I2S1_VOL_CTRL1_REG 0x14
#define AC100_I2S1_VOL_CTRL2_REG 0x15
#define AC100_I2S1_VOL_CTRL3_REG 0x16
#define AC100_I2S1_VOL_CTRL4_REG 0x17
#define AC100_I2S1_MXR_GAIN_REG 0x18
#define AC100_I2S2_CLK_CTRL_REG 0x20
#define AC100_I2S2_SDIN_CTRL_REG 0x21
#define AC100_I2S2_SDOUT_CTRL_REG 0x22
#define AC100_I2S2_DIG_MIXER_REG 0x23
#define AC100_I2S2_VOL_CTRL1_REG 0x24
#define AC100_I2S2_VOL_CTRL2_REG 0x26
#define AC100_I2S2_MXR_GAIN_REG 0x28
#define AC100_I2S3_CLK_CTRL_REG 0x30
#define AC100_I2S3_SDIN_CTRL_REG 0x31
#define AC100_I2S3_SDOUT_CTRL_REG 0x32
#define AC100_I2S3_SGP_CTRL_REG 0x33
#define AC100_ADC_DIG_CTRL_REG 0x40
#define AC100_RTC_RESET_REG 0xc6
#define AC100_RTC_CTRL_REG 0xc7
#define AC100_RTC_SEC_REG 0xc8
#define AC100_RTC_MIN_REG 0xc9
#define AC100_RTC_HOU_REG 0xca
#define AC100_RTC_WEE_REG 0xcb
#define AC100_RTC_DAY_REG 0xcc
#define AC100_RTC_MON_REG 0xcd
#define AC100_RTC_YEA_REG 0xce
#define AC100_RTC_UPD_TRIG_REG 0xcf
#define AC100_RTC_GP_REG(n) (0xe0 + (n))
#define AC100_RTC_CTRL_12H_24H_MODE __BIT(0)
#define AC100_RTC_UPD_TRIG_WRITE __BIT(15)
static const struct device_compatible_entry compat_data[] = {
{ "x-powers,ac100", 0 },
{ NULL, 0 }
};
struct ac100_softc {
device_t sc_dev;
i2c_tag_t sc_i2c;
i2c_addr_t sc_addr;
struct todr_chip_handle sc_todr;
};
static int ac100_match(device_t, cfdata_t, void *);
static void ac100_attach(device_t, device_t, void *);
static int ac100_rtc_gettime(todr_chip_handle_t, struct clock_ymdhms *);
static int ac100_rtc_settime(todr_chip_handle_t, struct clock_ymdhms *);
static int ac100_read(struct ac100_softc *, uint8_t, uint16_t *);
static int ac100_write(struct ac100_softc *, uint8_t, uint16_t);
CFATTACH_DECL_NEW(ac100ic, sizeof(struct ac100_softc),
ac100_match, ac100_attach, NULL, NULL);
static int
ac100_match(device_t parent, cfdata_t match, void *aux)
{
struct i2c_attach_args *ia = aux;
int match_result;
if (iic_use_direct_match(ia, match, compat_data, &match_result))
return match_result;
/* This device is direct-config only. */
return 0;
}
static void
ac100_attach(device_t parent, device_t self, void *aux)
{
struct ac100_softc *sc = device_private(self);
struct i2c_attach_args *ia = aux;
sc->sc_dev = self;
sc->sc_i2c = ia->ia_tag;
sc->sc_addr = ia->ia_addr;
aprint_naive("\n");
aprint_normal(": CODEC/RTC\n");
iic_acquire_bus(sc->sc_i2c, 0);
ac100_write(sc, AC100_RTC_CTRL_REG, AC100_RTC_CTRL_12H_24H_MODE);
iic_release_bus(sc->sc_i2c, 0);
sc->sc_todr.todr_gettime_ymdhms = ac100_rtc_gettime;
sc->sc_todr.todr_settime_ymdhms = ac100_rtc_settime;
sc->sc_todr.cookie = sc;
#ifdef FDT
const int phandle = ia->ia_cookie;
const int rtc_phandle = of_find_firstchild_byname(phandle, "rtc");
if (rtc_phandle > 0)
fdtbus_todr_attach(self, rtc_phandle, &sc->sc_todr);
#else
todr_attach(&sc->sc_todr);
#endif
}
static int
ac100_read(struct ac100_softc *sc, uint8_t reg, uint16_t *val)
{
return iic_smbus_read_word(sc->sc_i2c, sc->sc_addr, reg, val, 0);
}
static int
ac100_write(struct ac100_softc *sc, uint8_t reg, uint16_t val)
{
return iic_smbus_write_word(sc->sc_i2c, sc->sc_addr, reg, val, 0);
}
static int
ac100_rtc_gettime(todr_chip_handle_t tch, struct clock_ymdhms *dt)
{
struct ac100_softc *sc = tch->cookie;
uint16_t sec, min, hou, wee, day, mon, yea;
iic_acquire_bus(sc->sc_i2c, 0);
ac100_read(sc, AC100_RTC_SEC_REG, &sec);
ac100_read(sc, AC100_RTC_MIN_REG, &min);
ac100_read(sc, AC100_RTC_HOU_REG, &hou);
ac100_read(sc, AC100_RTC_WEE_REG, &wee);
ac100_read(sc, AC100_RTC_DAY_REG, &day);
ac100_read(sc, AC100_RTC_MON_REG, &mon);
ac100_read(sc, AC100_RTC_YEA_REG, &yea);
iic_release_bus(sc->sc_i2c, 0);
dt->dt_year = POSIX_BASE_YEAR + bcdtobin(yea & 0xff);
dt->dt_mon = bcdtobin(mon & 0x1f);
dt->dt_day = bcdtobin(day & 0x3f);
dt->dt_wday = bcdtobin(wee & 0x7);
dt->dt_hour = bcdtobin(hou & 0x3f);
dt->dt_min = bcdtobin(min & 0x7f);
dt->dt_sec = bcdtobin(sec & 0x7f);
return 0;
}
static int
ac100_rtc_settime(todr_chip_handle_t tch, struct clock_ymdhms *dt)
{
struct ac100_softc *sc = tch->cookie;
iic_acquire_bus(sc->sc_i2c, 0);
ac100_write(sc, AC100_RTC_SEC_REG, bintobcd(dt->dt_sec) & 0x7f);
ac100_write(sc, AC100_RTC_MIN_REG, bintobcd(dt->dt_min) & 0x7f);
ac100_write(sc, AC100_RTC_HOU_REG, bintobcd(dt->dt_hour) & 0x3f);
ac100_write(sc, AC100_RTC_WEE_REG, bintobcd(dt->dt_wday) & 0x7);
ac100_write(sc, AC100_RTC_DAY_REG, bintobcd(dt->dt_day) & 0x3f);
ac100_write(sc, AC100_RTC_MON_REG, bintobcd(dt->dt_mon) & 0x1f);
ac100_write(sc, AC100_RTC_YEA_REG,
bintobcd(dt->dt_year - POSIX_BASE_YEAR) & 0xff);
ac100_write(sc, AC100_RTC_UPD_TRIG_REG, AC100_RTC_UPD_TRIG_WRITE);
iic_release_bus(sc->sc_i2c, 0);
return 0;
}