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freebsd-skq/sys/mips/ingenic/jz4780_codec.c
Jared McNeill 7fd348080f The JZ4780 I2S can feed either the internal audio codec or the HDMI 
transmitter, but not both at the same time. This patch:

 - Adds a dev.pcm.0.internal_codec sysctl node for selecting between
   internal and external codec
 - Changes playback sample rate from 96 kHz to 48 kHz for HDMI compatibility
 - Enables i2s clock on codec access

Reviewed by:		br
Differential Revision:	https://reviews.freebsd.org/D8960
2016-12-29 14:00:10 +00:00

311 lines
8.1 KiB
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/*-
* Copyright (c) 2016 Ruslan Bukin <br@bsdpad.com>
* All rights reserved.
*
* This software was developed by SRI International and the University of
* Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-10-C-0237
* ("CTSRD"), as part of the DARPA CRASH research programme.
*
* 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.
*/
/* Ingenic JZ4780 CODEC. */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/resource.h>
#include <sys/rman.h>
#include <sys/gpio.h>
#include <machine/bus.h>
#include <dev/fdt/fdt_common.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <dev/gpio/gpiobusvar.h>
#include <dev/extres/clk/clk.h>
#include <mips/ingenic/jz4780_common.h>
#include <mips/ingenic/jz4780_codec.h>
#define CI20_HP_PIN 13
#define CI20_HP_PORT 3
struct codec_softc {
device_t dev;
struct resource *res[1];
bus_space_tag_t bst;
bus_space_handle_t bsh;
clk_t clk;
};
static struct resource_spec codec_spec[] = {
{ SYS_RES_MEMORY, 0, RF_ACTIVE },
{ -1, 0 }
};
static int codec_probe(device_t dev);
static int codec_attach(device_t dev);
static int codec_detach(device_t dev);
void codec_print_registers(struct codec_softc *sc);
static int
codec_write(struct codec_softc *sc, uint32_t reg, uint32_t val)
{
uint32_t tmp;
clk_enable(sc->clk);
tmp = (reg << RGADW_RGADDR_S);
tmp |= (val << RGADW_RGDIN_S);
tmp |= RGADW_RGWR;
WRITE4(sc, CODEC_RGADW, tmp);
while(READ4(sc, CODEC_RGADW) & RGADW_RGWR)
;
clk_disable(sc->clk);
return (0);
}
static int
codec_read(struct codec_softc *sc, uint32_t reg)
{
uint32_t tmp;
clk_enable(sc->clk);
tmp = (reg << RGADW_RGADDR_S);
WRITE4(sc, CODEC_RGADW, tmp);
tmp = READ4(sc, CODEC_RGDATA);
clk_disable(sc->clk);
return (tmp);
}
void
codec_print_registers(struct codec_softc *sc)
{
printf("codec SR %x\n", codec_read(sc, SR));
printf("codec SR2 %x\n", codec_read(sc, SR2));
printf("codec MR %x\n", codec_read(sc, MR));
printf("codec AICR_DAC %x\n", codec_read(sc, AICR_DAC));
printf("codec AICR_ADC %x\n", codec_read(sc, AICR_ADC));
printf("codec CR_LO %x\n", codec_read(sc, CR_LO));
printf("codec CR_HP %x\n", codec_read(sc, CR_HP));
printf("codec CR_DMIC %x\n", codec_read(sc, CR_DMIC));
printf("codec CR_MIC1 %x\n", codec_read(sc, CR_MIC1));
printf("codec CR_MIC2 %x\n", codec_read(sc, CR_MIC2));
printf("codec CR_LI1 %x\n", codec_read(sc, CR_LI1));
printf("codec CR_LI2 %x\n", codec_read(sc, CR_LI2));
printf("codec CR_DAC %x\n", codec_read(sc, CR_DAC));
printf("codec CR_ADC %x\n", codec_read(sc, CR_ADC));
printf("codec CR_MIX %x\n", codec_read(sc, CR_MIX));
printf("codec DR_MIX %x\n", codec_read(sc, DR_MIX));
printf("codec CR_VIC %x\n", codec_read(sc, CR_VIC));
printf("codec CR_CK %x\n", codec_read(sc, CR_CK));
printf("codec FCR_DAC %x\n", codec_read(sc, FCR_DAC));
printf("codec FCR_ADC %x\n", codec_read(sc, FCR_ADC));
printf("codec CR_TIMER_MSB %x\n", codec_read(sc, CR_TIMER_MSB));
printf("codec CR_TIMER_LSB %x\n", codec_read(sc, CR_TIMER_LSB));
printf("codec ICR %x\n", codec_read(sc, ICR));
printf("codec IMR %x\n", codec_read(sc, IMR));
printf("codec IFR %x\n", codec_read(sc, IFR));
printf("codec IMR2 %x\n", codec_read(sc, IMR2));
printf("codec IFR2 %x\n", codec_read(sc, IFR2));
printf("codec GCR_HPL %x\n", codec_read(sc, GCR_HPL));
printf("codec GCR_HPR %x\n", codec_read(sc, GCR_HPR));
printf("codec GCR_LIBYL %x\n", codec_read(sc, GCR_LIBYL));
printf("codec GCR_LIBYR %x\n", codec_read(sc, GCR_LIBYR));
printf("codec GCR_DACL %x\n", codec_read(sc, GCR_DACL));
printf("codec GCR_DACR %x\n", codec_read(sc, GCR_DACR));
printf("codec GCR_MIC1 %x\n", codec_read(sc, GCR_MIC1));
printf("codec GCR_MIC2 %x\n", codec_read(sc, GCR_MIC2));
printf("codec GCR_ADCL %x\n", codec_read(sc, GCR_ADCL));
printf("codec GCR_ADCR %x\n", codec_read(sc, GCR_ADCR));
printf("codec GCR_MIXDACL %x\n", codec_read(sc, GCR_MIXDACL));
printf("codec GCR_MIXDACR %x\n", codec_read(sc, GCR_MIXDACR));
printf("codec GCR_MIXADCL %x\n", codec_read(sc, GCR_MIXADCL));
printf("codec GCR_MIXADCR %x\n", codec_read(sc, GCR_MIXADCR));
printf("codec CR_ADC_AGC %x\n", codec_read(sc, CR_ADC_AGC));
printf("codec DR_ADC_AGC %x\n", codec_read(sc, DR_ADC_AGC));
}
/*
* CI20 board-specific
*/
static int
ci20_hp_unmute(struct codec_softc *sc)
{
device_t dev;
int port;
int err;
int pin;
pin = CI20_HP_PIN;
port = CI20_HP_PORT;
dev = devclass_get_device(devclass_find("gpio"), port);
if (dev == NULL)
return (0);
err = GPIO_PIN_SETFLAGS(dev, pin, GPIO_PIN_OUTPUT);
if (err != 0) {
device_printf(dev, "Cannot configure GPIO pin %d on %s\n",
pin, device_get_nameunit(dev));
return (err);
}
err = GPIO_PIN_SET(dev, pin, 0);
if (err != 0) {
device_printf(dev, "Cannot configure GPIO pin %d on %s\n",
pin, device_get_nameunit(dev));
return (err);
}
return (0);
}
static int
codec_probe(device_t dev)
{
if (!ofw_bus_status_okay(dev))
return (ENXIO);
if (!ofw_bus_is_compatible(dev, "ingenic,jz4780-codec"))
return (ENXIO);
device_set_desc(dev, "Ingenic JZ4780 CODEC");
return (BUS_PROBE_DEFAULT);
}
static int
codec_attach(device_t dev)
{
struct codec_softc *sc;
uint8_t reg;
sc = device_get_softc(dev);
sc->dev = dev;
if (bus_alloc_resources(dev, codec_spec, sc->res)) {
device_printf(dev, "could not allocate resources for device\n");
return (ENXIO);
}
/* Memory interface */
sc->bst = rman_get_bustag(sc->res[0]);
sc->bsh = rman_get_bushandle(sc->res[0]);
if (clk_get_by_ofw_name(dev, 0, "i2s", &sc->clk) != 0) {
device_printf(dev, "could not get i2s clock\n");
bus_release_resources(dev, codec_spec, sc->res);
return (ENXIO);
}
/* Initialize codec. */
reg = codec_read(sc, CR_VIC);
reg &= ~(VIC_SB_SLEEP | VIC_SB);
codec_write(sc, CR_VIC, reg);
DELAY(20000);
reg = codec_read(sc, CR_DAC);
reg &= ~(DAC_SB | DAC_MUTE);
codec_write(sc, CR_DAC, reg);
DELAY(10000);
/* I2S, 16-bit, 48 kHz. */
reg = codec_read(sc, AICR_DAC);
reg &= ~(AICR_DAC_SB | DAC_ADWL_M);
reg |= DAC_ADWL_16;
reg &= ~(AUDIOIF_M);
reg |= AUDIOIF_I2S;
codec_write(sc, AICR_DAC, reg);
DELAY(10000);
reg = FCR_DAC_48;
codec_write(sc, FCR_DAC, reg);
DELAY(10000);
/* Unmute headphones. */
reg = codec_read(sc, CR_HP);
reg &= ~(HP_SB | HP_MUTE);
codec_write(sc, CR_HP, reg);
ci20_hp_unmute(sc);
return (0);
}
static int
codec_detach(device_t dev)
{
struct codec_softc *sc;
sc = device_get_softc(dev);
bus_release_resources(dev, codec_spec, sc->res);
return (0);
}
static device_method_t codec_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, codec_probe),
DEVMETHOD(device_attach, codec_attach),
DEVMETHOD(device_detach, codec_detach),
DEVMETHOD_END
};
static driver_t codec_driver = {
"codec",
codec_methods,
sizeof(struct codec_softc),
};
static devclass_t codec_devclass;
DRIVER_MODULE(codec, simplebus, codec_driver, codec_devclass, 0, 0);
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