diff options
| author | Tom Warren <twarren@nvidia.com> | 2014-11-24 10:00:11 -0700 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2015-04-10 20:46:23 +0200 |
| commit | ffe0bb7cd805190afae225dcfeb0a11dedccbb8f (patch) | |
| tree | f5a7b471e63e3ac9057e05e4a85e3b1b3647994a /src | |
| parent | d8060904eea998136f39866d0eaba233882a5f3f (diff) | |
google/rush_ryu: Add speaker amp config for AD4567 on P0/P1
A couple of regs need to be poked to allow audio output
from this part on Ryu P0/P1. It will be replaced by two
non-configurable amps on P3.
BUG=none
BRANCH=none
TEST=Build/flashed on Ryu P1, dumped AD4567 (I2C6 dev 0x34)
regs and confirmed settings.
Change-Id: Ie602b056fb1488546ab233f8f81cfacb96624ebb
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 75dabe378b561e939381e2ef5113a2b28bfcedf8
Original-Change-Id: I8999843646927dbd07a179ede973ba5f1eb97167
Original-Signed-off-by: Tom Warren <twarren@nvidia.com>
Original-Reviewed-on: https://chromium-review.googlesource.com/231384
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/9532
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/mainboard/google/rush_ryu/mainboard.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/src/mainboard/google/rush_ryu/mainboard.c b/src/mainboard/google/rush_ryu/mainboard.c index 9673aa5410..2955958d3d 100644 --- a/src/mainboard/google/rush_ryu/mainboard.c +++ b/src/mainboard/google/rush_ryu/mainboard.c @@ -23,6 +23,7 @@ #include <cbmem.h> #include <delay.h> #include <device/device.h> +#include <device/i2c.h> #include <elog.h> #include <memrange.h> #include <soc/addressmap.h> @@ -208,6 +209,37 @@ static void setup_audio(void) clock_enable_audio(); } +#define AD4567_DEV 0x34 +#define PWR_CTL 0 +#define DAC_CTL 2 +#define SPWDN (1 << 0) +#define DAC_MUTE (1 << 6) +#define DAC_FS (0x7 << 0) +#define SR_32K_48KHZ 0x2 + +static void enable_ad4567_spkr_amp(void) +{ + uint8_t reg_byte; + + if (board_id() >= BOARD_ID_PROTO_3) + return; + /* + * I2C6, device 0x34 is an AD4567 speaker amp on P0/P1. + * It needs to have a couple of regs tweaked to turn it on + * so it can provide audio output to the mono speaker on P0/P1. + */ + i2c_readb(I2C6_BUS, AD4567_DEV, PWR_CTL, ®_byte); + reg_byte &= ~SPWDN; // power up amp + i2c_writeb(I2C6_BUS, AD4567_DEV, PWR_CTL, reg_byte); + + /* The next 2 settings are defaults, but set them anyway */ + i2c_readb(I2C6_BUS, AD4567_DEV, DAC_CTL, ®_byte); + reg_byte &= ~DAC_MUTE; // unmute DAC (default) + reg_byte &= ~DAC_FS; // mask sample rate bits + reg_byte |= SR_32K_48KHZ; // set 32K-48KHz sample rate (default) + i2c_writeb(I2C6_BUS, AD4567_DEV, DAC_CTL, reg_byte); +} + static void mainboard_init(device_t dev) { soc_configure_funits(funits, ARRAY_SIZE(funits)); @@ -217,6 +249,8 @@ static void mainboard_init(device_t dev) i2c_init(I2C6_BUS); setup_audio(); + /* Temp hack for P1 board: Enable speaker amp (powerup, etc.) */ + enable_ad4567_spkr_amp(); elog_init(); elog_add_boot_reason(); |