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-rw-r--r--arch/sandbox/dts/test.dts7
-rw-r--r--arch/sandbox/include/asm/test.h10
-rw-r--r--drivers/sound/Makefile1
-rw-r--r--drivers/sound/codec-uclass.c26
-rw-r--r--drivers/sound/sandbox.c55
-rw-r--r--include/audio_codec.h48
-rw-r--r--include/dm/uclass-id.h1
-rw-r--r--test/dm/Makefile1
-rw-r--r--test/dm/audio.c34
9 files changed, 182 insertions, 1 deletions
diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts
index 6b1c2692ba..9ced5beee8 100644
--- a/arch/sandbox/dts/test.dts
+++ b/arch/sandbox/dts/test.dts
@@ -42,7 +42,12 @@
osd0 = "/osd";
};
- cros_ec: cros-ec {
+ audio: audio-codec {
+ compatible = "sandbox,audio-codec";
+ #sound-dai-cells = <1>;
+ };
+
+ cros_ec: cros-ec {
reg = <0 0>;
compatible = "google,cros-ec-sandbox";
diff --git a/arch/sandbox/include/asm/test.h b/arch/sandbox/include/asm/test.h
index 5e81839295..f70e0d8417 100644
--- a/arch/sandbox/include/asm/test.h
+++ b/arch/sandbox/include/asm/test.h
@@ -121,4 +121,14 @@ int sandbox_pwm_get_config(struct udevice *dev, uint channel, uint *period_nsp,
*/
void sandbox_sf_set_block_protect(struct udevice *dev, int bp_mask);
+/**
+ * sandbox_get_codec_params() - Read back codec parameters
+ *
+ * This reads back the parameters set by audio_codec_set_params() for the
+ * sandbox audio driver. Arguments are as for that function.
+ */
+void sandbox_get_codec_params(struct udevice *dev, int *interfacep, int *ratep,
+ int *mclk_freqp, int *bits_per_samplep,
+ uint *channelsp);
+
#endif
diff --git a/drivers/sound/Makefile b/drivers/sound/Makefile
index 696c5aecbe..ae5fabed84 100644
--- a/drivers/sound/Makefile
+++ b/drivers/sound/Makefile
@@ -4,6 +4,7 @@
# R. Chandrasekar <rcsekar@samsung.com>
obj-$(CONFIG_SOUND) += sound.o
+obj-$(CONFIG_DM_SOUND) += codec-uclass.o
obj-$(CONFIG_I2S) += sound-i2s.o
obj-$(CONFIG_I2S_SAMSUNG) += samsung-i2s.o
obj-$(CONFIG_SOUND_SANDBOX) += sandbox.o
diff --git a/drivers/sound/codec-uclass.c b/drivers/sound/codec-uclass.c
new file mode 100644
index 0000000000..1ec77acfc1
--- /dev/null
+++ b/drivers/sound/codec-uclass.c
@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2018 Google LLC
+ * Written by Simon Glass <sjg@chromium.org>
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <audio_codec.h>
+
+int audio_codec_set_params(struct udevice *dev, int interface, int rate,
+ int mclk_freq, int bits_per_sample, uint channels)
+{
+ struct audio_codec_ops *ops = audio_codec_get_ops(dev);
+
+ if (!ops->set_params)
+ return -ENOSYS;
+
+ return ops->set_params(dev, interface, rate, mclk_freq, bits_per_sample,
+ channels);
+}
+
+UCLASS_DRIVER(audio_codec) = {
+ .id = UCLASS_AUDIO_CODEC,
+ .name = "audio-codec",
+};
diff --git a/drivers/sound/sandbox.c b/drivers/sound/sandbox.c
index 94eff54282..d24eb9ae9c 100644
--- a/drivers/sound/sandbox.c
+++ b/drivers/sound/sandbox.c
@@ -4,9 +4,19 @@
*/
#include <common.h>
+#include <dm.h>
+#include <audio_codec.h>
#include <asm/sound.h>
#include <asm/sdl.h>
+struct sandbox_codec_priv {
+ int interface;
+ int rate;
+ int mclk_freq;
+ int bits_per_sample;
+ uint channels;
+};
+
int sound_play(uint32_t msec, uint32_t frequency)
{
sandbox_sdl_sound_start(frequency);
@@ -20,3 +30,48 @@ int sound_init(const void *blob)
{
return sandbox_sdl_sound_init();
}
+
+void sandbox_get_codec_params(struct udevice *dev, int *interfacep, int *ratep,
+ int *mclk_freqp, int *bits_per_samplep,
+ uint *channelsp)
+{
+ struct sandbox_codec_priv *priv = dev_get_priv(dev);
+
+ *interfacep = priv->interface;
+ *ratep = priv->rate;
+ *mclk_freqp = priv->mclk_freq;
+ *bits_per_samplep = priv->bits_per_sample;
+ *channelsp = priv->channels;
+}
+
+static int sandbox_codec_set_params(struct udevice *dev, int interface,
+ int rate, int mclk_freq,
+ int bits_per_sample, uint channels)
+{
+ struct sandbox_codec_priv *priv = dev_get_priv(dev);
+
+ priv->interface = interface;
+ priv->rate = rate;
+ priv->mclk_freq = mclk_freq;
+ priv->bits_per_sample = bits_per_sample;
+ priv->channels = channels;
+
+ return 0;
+}
+
+static const struct audio_codec_ops sandbox_codec_ops = {
+ .set_params = sandbox_codec_set_params,
+};
+
+static const struct udevice_id sandbox_codec_ids[] = {
+ { .compatible = "sandbox,audio-codec" },
+ { }
+};
+
+U_BOOT_DRIVER(sandbox_codec) = {
+ .name = "sandbox_codec",
+ .id = UCLASS_AUDIO_CODEC,
+ .of_match = sandbox_codec_ids,
+ .ops = &sandbox_codec_ops,
+ .priv_auto_alloc_size = sizeof(struct sandbox_codec_priv),
+};
diff --git a/include/audio_codec.h b/include/audio_codec.h
new file mode 100644
index 0000000000..2587099546
--- /dev/null
+++ b/include/audio_codec.h
@@ -0,0 +1,48 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2018 Google LLC
+ * Written by Simon Glass <sjg@chromium.org>
+ */
+
+#ifndef __AUDIO_CODEC_H__
+#define __AUDIO_CODEC_H__
+
+/*
+ * An audio codec turns digital data into sound with various parameters to
+ * control its operation.
+ */
+
+/* Operations for sound */
+struct audio_codec_ops {
+ /**
+ * set_params() - Set audio codec parameters
+ *
+ * @dev: Sound device
+ * @inteface: Interface number to use on codec
+ * @rate: Sampling rate in Hz
+ * @mclk_freq: Codec clock frequency in Hz
+ * @bits_per_sample: Must be 16 or 24
+ * @channels: Number of channels to use (1=mono, 2=stereo)
+ * @return 0 if OK, -ve on error
+ */
+ int (*set_params)(struct udevice *dev, int interface, int rate,
+ int mclk_freq, int bits_per_sample, uint channels);
+};
+
+#define audio_codec_get_ops(dev) ((struct audio_codec_ops *)(dev)->driver->ops)
+
+/**
+ * audio_codec_set_params() - Set audio codec parameters
+ *
+ * @dev: Sound device
+ * @inteface: Interface number to use on codec
+ * @rate: Sampling rate in Hz
+ * @mclk_freq: Codec clock frequency in Hz
+ * @bits_per_sample: Must be 16 or 24
+ * @channels: Number of channels to use (1=mono, 2=stereo)
+ * @return 0 if OK, -ve on error
+ */
+int audio_codec_set_params(struct udevice *dev, int interface, int rate,
+ int mclk_freq, int bits_per_sample, uint channels);
+
+#endif /* __AUDIO_CODEC_H__ */
diff --git a/include/dm/uclass-id.h b/include/dm/uclass-id.h
index e960e48b85..c3c18356ab 100644
--- a/include/dm/uclass-id.h
+++ b/include/dm/uclass-id.h
@@ -29,6 +29,7 @@ enum uclass_id {
/* U-Boot uclasses start here - in alphabetical order */
UCLASS_ADC, /* Analog-to-digital converter */
UCLASS_AHCI, /* SATA disk controller */
+ UCLASS_AUDIO_CODEC, /* Audio codec with control and data path */
UCLASS_AXI, /* AXI bus */
UCLASS_BLK, /* Block device */
UCLASS_BOARD, /* Device information from hardware */
diff --git a/test/dm/Makefile b/test/dm/Makefile
index 2c9081e4dd..ef450b7ed8 100644
--- a/test/dm/Makefile
+++ b/test/dm/Makefile
@@ -13,6 +13,7 @@ obj-$(CONFIG_UT_DM) += test-uclass.o
# subsystem you must add sandbox tests here.
obj-$(CONFIG_UT_DM) += core.o
ifneq ($(CONFIG_SANDBOX),)
+obj-$(CONFIG_DM_SOUND) += audio.o
obj-$(CONFIG_BLK) += blk.o
obj-$(CONFIG_BOARD) += board.o
obj-$(CONFIG_CLK) += clk.o
diff --git a/test/dm/audio.c b/test/dm/audio.c
new file mode 100644
index 0000000000..77c3a3625b
--- /dev/null
+++ b/test/dm/audio.c
@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2018 Google LLC
+ * Written by Simon Glass <sjg@chromium.org>
+ */
+
+#include <common.h>
+#include <audio_codec.h>
+#include <dm.h>
+#include <dm/test.h>
+#include <test/ut.h>
+#include <asm/test.h>
+
+/* Basic test of the audio codec uclass */
+static int dm_test_audio(struct unit_test_state *uts)
+{
+ int interface, rate, mclk_freq, bits_per_sample;
+ struct udevice *dev;
+ uint channels;
+
+ /* check probe success */
+ ut_assertok(uclass_first_device_err(UCLASS_AUDIO_CODEC, &dev));
+ ut_assertok(audio_codec_set_params(dev, 1, 2, 3, 4, 5));
+ sandbox_get_codec_params(dev, &interface, &rate, &mclk_freq,
+ &bits_per_sample, &channels);
+ ut_asserteq(1, interface);
+ ut_asserteq(2, rate);
+ ut_asserteq(3, mclk_freq);
+ ut_asserteq(4, bits_per_sample);
+ ut_asserteq(5, channels);
+
+ return 0;
+}
+DM_TEST(dm_test_audio, DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT);
generated by cgit v1.2.3 (git 2.39.0) at 2024-07-20 14:23:17 +0300