From 97dcb50623db12f13c9c9a8b68dca61901b7f030 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Emilio=20L=C3=B3pez?= Date: Mon, 14 Jul 2014 20:25:23 -0300 Subject: [PATCH] ASoC: sunxi: add support for the on-chip codec on early Allwinner SoCs The sun4i, sun5i and sun7i SoC families have a built-in codec, capable of both audio capture and playback. This memory-mapped device can be fed with audio data via the Allwinner DMA controller. Signed-off-by: Hans de Goede --- sound/soc/Kconfig | 1 + sound/soc/Makefile | 1 + sound/soc/sunxi/Kconfig | 10 + sound/soc/sunxi/Makefile | 2 + sound/soc/sunxi/sunxi-codec.c | 802 ++++++++++++++++++++++++++++++++++++++++++ 5 files changed, 816 insertions(+) create mode 100644 sound/soc/sunxi/Kconfig create mode 100644 sound/soc/sunxi/Makefile create mode 100644 sound/soc/sunxi/sunxi-codec.c --- a/sound/soc/Kconfig +++ b/sound/soc/Kconfig @@ -53,6 +53,7 @@ source "sound/soc/samsung/Kconfig" source "sound/soc/sh/Kconfig" source "sound/soc/sirf/Kconfig" source "sound/soc/spear/Kconfig" +source "sound/soc/sunxi/Kconfig" source "sound/soc/tegra/Kconfig" source "sound/soc/txx9/Kconfig" source "sound/soc/ux500/Kconfig" --- a/sound/soc/Makefile +++ b/sound/soc/Makefile @@ -34,6 +34,7 @@ obj-$(CONFIG_SND_SOC) += samsung/ obj-$(CONFIG_SND_SOC) += sh/ obj-$(CONFIG_SND_SOC) += sirf/ obj-$(CONFIG_SND_SOC) += spear/ +obj-$(CONFIG_SND_SOC) += sunxi/ obj-$(CONFIG_SND_SOC) += tegra/ obj-$(CONFIG_SND_SOC) += txx9/ obj-$(CONFIG_SND_SOC) += ux500/ --- /dev/null +++ b/sound/soc/sunxi/Kconfig @@ -0,0 +1,10 @@ +menu "SoC Audio support for Allwinner SoCs" + depends on ARCH_SUNXI + +config SND_SUNXI_SOC_CODEC + tristate "APB on-chip sun4i/sun5i/sun7i CODEC" + select SND_SOC_GENERIC_DMAENGINE_PCM + select REGMAP_MMIO + default y + +endmenu --- /dev/null +++ b/sound/soc/sunxi/Makefile @@ -0,0 +1,2 @@ +obj-$(CONFIG_SND_SUNXI_SOC_CODEC) += sunxi-codec.o + --- /dev/null +++ b/sound/soc/sunxi/sunxi-codec.c @@ -0,0 +1,802 @@ +/* + * Copyright 2014 Emilio López + * Copyright 2014 Jon Smirl + * + * Based on the Allwinner SDK driver, released under the GPL. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include + +/* Codec DAC register offsets and bit fields */ +#define SUNXI_DAC_DPC (0x00) +#define SUNXI_DAC_DPC_EN_DA (31) +#define SUNXI_DAC_DPC_DVOL (12) +#define SUNXI_DAC_FIFOC (0x04) +#define SUNXI_DAC_FIFOC_DAC_FS (29) +#define SUNXI_DAC_FIFOC_FIR_VERSION (28) +#define SUNXI_DAC_FIFOC_SEND_LASAT (26) +#define SUNXI_DAC_FIFOC_TX_FIFO_MODE (24) +#define SUNXI_DAC_FIFOC_DRQ_CLR_CNT (21) +#define SUNXI_DAC_FIFOC_TX_TRIG_LEVEL (8) +#define SUNXI_DAC_FIFOC_MONO_EN (6) +#define SUNXI_DAC_FIFOC_TX_SAMPLE_BITS (5) +#define SUNXI_DAC_FIFOC_DAC_DRQ_EN (4) +#define SUNXI_DAC_FIFOC_FIFO_FLUSH (0) +#define SUNXI_DAC_FIFOS (0x08) +#define SUNXI_DAC_TXDATA (0x0c) +#define SUNXI_DAC_ACTL (0x10) +#define SUNXI_DAC_ACTL_DACAENR (31) +#define SUNXI_DAC_ACTL_DACAENL (30) +#define SUNXI_DAC_ACTL_MIXEN (29) +#define SUNXI_DAC_ACTL_LDACLMIXS (15) +#define SUNXI_DAC_ACTL_RDACRMIXS (14) +#define SUNXI_DAC_ACTL_LDACRMIXS (13) +#define SUNXI_DAC_ACTL_DACPAS (8) +#define SUNXI_DAC_ACTL_MIXPAS (7) +#define SUNXI_DAC_ACTL_PA_MUTE (6) +#define SUNXI_DAC_ACTL_PA_VOL (0) +#define SUNXI_DAC_TUNE (0x14) +#define SUNXI_DAC_DEBUG (0x18) + +/* Codec ADC register offsets and bit fields */ +#define SUNXI_ADC_FIFOC (0x1c) +#define SUNXI_ADC_FIFOC_EN_AD (28) +#define SUNXI_ADC_FIFOC_RX_FIFO_MODE (24) +#define SUNXI_ADC_FIFOC_RX_TRIG_LEVEL (8) +#define SUNXI_ADC_FIFOC_MONO_EN (7) +#define SUNXI_ADC_FIFOC_RX_SAMPLE_BITS (6) +#define SUNXI_ADC_FIFOC_ADC_DRQ_EN (4) +#define SUNXI_ADC_FIFOC_FIFO_FLUSH (0) +#define SUNXI_ADC_FIFOS (0x20) +#define SUNXI_ADC_RXDATA (0x24) +#define SUNXI_ADC_ACTL (0x28) +#define SUNXI_ADC_ACTL_ADCREN (31) +#define SUNXI_ADC_ACTL_ADCLEN (30) +#define SUNXI_ADC_ACTL_PREG1EN (29) +#define SUNXI_ADC_ACTL_PREG2EN (28) +#define SUNXI_ADC_ACTL_VMICEN (27) +#define SUNXI_ADC_ACTL_VADCG (20) +#define SUNXI_ADC_ACTL_ADCIS (17) +#define SUNXI_ADC_ACTL_PA_EN (4) +#define SUNXI_ADC_ACTL_DDE (3) +#define SUNXI_ADC_DEBUG (0x2c) + +/* Other various ADC registers */ +#define SUNXI_DAC_TXCNT (0x30) +#define SUNXI_ADC_RXCNT (0x34) +#define SUNXI_AC_SYS_VERI (0x38) +#define SUNXI_AC_MIC_PHONE_CAL (0x3c) + +/* Supported SoC families - used for quirks */ +enum sunxi_soc_family { + SUN4IA, /* A10 SoC - revision A */ + SUN4I, /* A10 SoC - later revisions */ + SUN5I, /* A10S/A13 SoCs */ + SUN7I, /* A20 SoC */ +}; + +struct sunxi_priv { + struct regmap *regmap; + struct clk *clk_apb, *clk_module; + + enum sunxi_soc_family revision; + + struct snd_dmaengine_dai_dma_data playback_dma_data; + struct snd_dmaengine_dai_dma_data capture_dma_data; +}; + +static void sunxi_codec_play_start(struct sunxi_priv *priv) +{ + /* TODO: see if we need to drive PA GPIO high */ + + /* flush TX FIFO */ + regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 0x1 << SUNXI_DAC_FIFOC_FIFO_FLUSH, 0x1 << SUNXI_DAC_FIFOC_FIFO_FLUSH); + + /* enable DAC DRQ */ + regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 0x1 << SUNXI_DAC_FIFOC_DAC_DRQ_EN, 0x1 << SUNXI_DAC_FIFOC_DAC_DRQ_EN); +} + +static void sunxi_codec_play_stop(struct sunxi_priv *priv) +{ + /* TODO: see if we need to drive PA GPIO low */ + + /* disable DAC DRQ */ + regmap_update_bits(priv->regmap, SUNXI_DAC_FIFOC, 0x1 << SUNXI_DAC_FIFOC_DAC_DRQ_EN, 0x0 << SUNXI_DAC_FIFOC_DAC_DRQ_EN); +} + +static void sunxi_codec_capture_start(struct sunxi_priv *priv) +{ + /* TODO: see if we need to drive PA GPIO high */ + + /* enable ADC DRQ */ + regmap_update_bits(priv->regmap, SUNXI_ADC_FIFOC, 0x1 << SUNXI_ADC_FIFOC_ADC_DRQ_EN, 0x1 << SUNXI_ADC_FIFOC_ADC_DRQ_EN); +} + +static void sunxi_codec_capture_stop(struct sunxi_priv *priv) +{ + /* disable ADC DRQ */ + regmap_update_bits(priv->regmap, SUNXI_ADC_FIFOC, 0x1 << SUNXI_ADC_FIFOC_ADC_DRQ_EN, 0x0 << SUNXI_ADC_FIFOC_ADC_DRQ_EN); + + /* enable mic1 PA */ + regmap_update_bits(priv->regmap, SUNXI_ADC_ACTL, 0x1 << SUNXI_ADC_ACTL_PREG1EN, 0x0 << SUNXI_ADC_ACTL_PREG1EN); + + /* enable VMIC */ + regmap_update_bits(priv->regmap, SUNXI_ADC_ACTL, 0x1 << SUNXI_ADC_ACTL_VMICEN, 0x0 << SUNXI_ADC_ACTL_VMICEN); + if (priv->revision == SUN7I) { + /* TODO: undocumented */ + regmap_update_bits(priv->regmap, SUNXI_DAC_TUNE, 0x3 << 8, 0x0 << 8); + } + + /* enable ADC digital */ + regmap_update_bits(priv->regmap, SUNXI_ADC_FIFOC, 0x1 << SUNXI_ADC_FIFOC_EN_AD, 0x0 << SUNXI_ADC_FIFOC_EN_AD); + + /* set RX FIFO mode */ + regmap_update_bits(priv->regmap, SUNXI_ADC_FIFOC, 0x1 << SUNXI_ADC_FIFOC_RX_FIFO_MODE, 0x0 << SUNXI_ADC_FIFOC_RX_FIFO_MODE); + + /* flush RX FIFO */ + regmap_update_bits(priv->regmap, SUNXI_ADC_FIFOC, 0x1 << SUNXI_ADC_FIFOC_FIFO_FLUSH, 0x0 << SUNXI_
--- a/scripts/kallsyms.c
+++ b/scripts/kallsyms.c
@@ -54,6 +54,7 @@ static struct text_range text_ranges[] =
 static struct sym_entry *table;
 static unsigned int table_size, table_cnt;
 static int all_symbols = 0;
+static int uncompressed = 0;
 static char symbol_prefix_char = '\0';
 static unsigned long long kernel_start_addr = 0;
 
@@ -367,6 +368,9 @@ static void write_src(void)
 
 	free(markers);
 
+	if (uncompressed)
+		return;
+
 	output_label("kallsyms_token_table");
 	off = 0;
 	for (i = 0; i < 256; i++) {
@@ -425,6 +429,9 @@ static void *find_token(unsigned char *s
 {
 	int i;
 
+	if (uncompressed)
+		return NULL;
+
 	for (i = 0; i < len - 1; i++) {
 		if (str[i] == token[0] && str[i+1] == token[1])
 			return &str[i];
@@ -497,6 +504,9 @@ static void optimize_result(void)
 {
 	int i, best;
 
+	if (uncompressed)
+		return;
+
 	/* using the '\0' symbol last allows compress_symbols to use standard
 	 * fast string functions */
 	for (i = 255; i >= 0; i--) {
@@ -656,7 +666,9 @@ int main(int argc, char **argv)
 			} else if (strncmp(argv[i], "--page-offset=", 14) == 0) {
 				const char *p = &argv[i][14];
 				kernel_start_addr = strtoull(p, NULL, 16);
-			} else
+			} else if (strcmp(argv[i], "--uncompressed") == 0)
+				uncompressed = 1;
+			else
 				usage();
 		}
 	} else if (argc != 1)
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1289,6 +1289,17 @@ config SYSCTL_ARCH_UNALIGN_ALLOW
 	  the unaligned access emulation.
 	  see arch/parisc/kernel/unaligned.c for reference
 
+config KALLSYMS_UNCOMPRESSED
+	bool "Keep kallsyms uncompressed"
+	depends on KALLSYMS
+	help
+		Normally kallsyms contains compressed symbols (using a token table),
+		reducing the uncompressed kernel image size. Keeping the symbol table
+		uncompressed significantly improves the size of this part in compressed
+		kernel images.
+
+		Say N unless you need compressed kernel images to be small.
+
 config HAVE_PCSPKR_PLATFORM
 	bool
 
--- a/scripts/link-vmlinux.sh
+++ b/scripts/link-vmlinux.sh
@@ -86,6 +86,10 @@ kallsyms()
 		kallsymopt="${kallsymopt} --page-offset=$CONFIG_PAGE_OFFSET"
 	fi
 
+	if [ -n "${CONFIG_KALLSYMS_UNCOMPRESSED}" ]; then
+		kallsymopt="${kallsymopt} --uncompressed"
+	fi
+
 	local aflags="${KBUILD_AFLAGS} ${KBUILD_AFLAGS_KERNEL}               \
 		      ${NOSTDINC_FLAGS} ${LINUXINCLUDE} ${KBUILD_CPPFLAGS}"
 
--- a/kernel/kallsyms.c
+++ b/kernel/kallsyms.c
@@ -108,6 +108,11 @@ static unsigned int kallsyms_expand_symb
 	 * For every byte on the compressed symbol data, copy the table
 	 * entry for that byte.
 	 */
+#ifdef CONFIG_KALLSYMS_UNCOMPRESSED
+	memcpy(result, data + 1, len - 1);
+	result += len - 1;
+	len = 0;
+#endif
 	while (len) {
 		tptr = &kallsyms_token_table[kallsyms_token_index[*data]];
 		data++;
@@ -140,6 +145,9 @@ tail:
  */
 static char kallsyms_get_symbol_type(unsigned int off)
 {
+#ifdef CONFIG_KALLSYMS_UNCOMPRESSED
+	return kallsyms_names[off + 1];
+#endif
 	/*
 	 * Get just the first code, look it up in the token table,
 	 * and return the first char from this token.
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-04 03:52:03 +0000
i_ops sunxi_codec_dai_ops = { + .startup = sunxi_codec_startup, + .shutdown = sunxi_codec_shutdown, + .trigger = sunxi_codec_trigger, + .hw_params = sunxi_codec_hw_params, + .prepare = sunxi_codec_prepare, +}; + +static struct snd_soc_dai_driver sunxi_codec_dai = { + .name = "Codec", + .playback = { + .stream_name = "Codec Playback", + .channels_min = 1, + .channels_max = 2, + .rate_min = 8000, + .rate_max = 192000, + .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_11025 |\ + SNDRV_PCM_RATE_22050| SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\ + SNDRV_PCM_RATE_48000 |SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000 |\ + SNDRV_PCM_RATE_KNOT), + .formats = (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE), + .sig_bits = 24, + }, + .capture = { + .stream_name = "Codec Capture", + .channels_min = 1, + .channels_max = 2, + .rate_min = 8000, + .rate_max = 192000, + .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_11025 |\ + SNDRV_PCM_RATE_22050| SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\ + SNDRV_PCM_RATE_48000 |SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_192000 |\ + SNDRV_PCM_RATE_KNOT), + .formats = (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE), + .sig_bits = 24, + }, + .ops = &sunxi_codec_dai_ops, +}; + +/*** Codec ***/ + +static const struct snd_kcontrol_new sunxi_pa = + SOC_DAPM_SINGLE("PA Switch", SUNXI_ADC_ACTL, SUNXI_ADC_ACTL_PA_EN, 1, 0); + +static const struct snd_kcontrol_new sunxi_pa_mute = + SOC_DAPM_SINGLE("PA Mute Switch", SUNXI_DAC_ACTL, SUNXI_DAC_ACTL_PA_MUTE, 1, 0); + +static DECLARE_TLV_DB_SCALE(sunxi_pa_volume_scale, -6300, 100, 1); + +static const struct snd_kcontrol_new sunxi_codec_widgets[] = { + SOC_SINGLE_TLV("PA Volume", SUNXI_DAC_ACTL, SUNXI_DAC_ACTL_PA_VOL, + 0x3F, 0, sunxi_pa_volume_scale), +}; + +static const char *right_output_mixer_text[] = { "Disabled", "Left", "Right" }; +static const unsigned int right_output_mixer_values[] = { 0x0, 0x1, 0x2 }; +static SOC_VALUE_ENUM_SINGLE_DECL(right_output_mixer, SUNXI_DAC_ACTL, + SUNXI_DAC_ACTL_LDACRMIXS, 0x3, + right_output_mixer_text, + right_output_mixer_values); + +static const char *left_output_mixer_text[] = { "Disabled", "Left" }; +static const unsigned int left_output_mixer_values[] = { 0x0, 0x1 }; +static SOC_VALUE_ENUM_SINGLE_DECL(left_output_mixer, SUNXI_DAC_ACTL, + SUNXI_DAC_ACTL_LDACLMIXS, 0x1, + left_output_mixer_text, + left_output_mixer_values); + +static const struct snd_kcontrol_new right_mixer = + SOC_DAPM_ENUM("Right Mixer", right_output_mixer); + +static const struct snd_kcontrol_new left_mixer = + SOC_DAPM_ENUM("Left Mixer", left_output_mixer); + +static const struct snd_kcontrol_new sunxi_mixer = + SOC_DAPM_SINGLE("Mixer Switch", SUNXI_DAC_ACTL, SUNXI_DAC_ACTL_MIXEN, 1, 0); + +static const char *sunxi_dac_output_text[] = { "Muted", "Mixed", "Direct" }; +static const unsigned int sunxi_dac_output_values[] = { 0x0, 0x1, 0x2 }; +static SOC_VALUE_ENUM_SINGLE_DECL(dac_output_mux, SUNXI_DAC_ACTL, + SUNXI_DAC_ACTL_MIXPAS, 0x3, + sunxi_dac_output_text, + sunxi_dac_output_values); + +static const struct snd_kcontrol_new sunxi_dac_output = + SOC_DAPM_ENUM("DAC Output", dac_output_mux); + +static const struct snd_soc_dapm_widget codec_dapm_widgets[] = { + /* Digital parts of the DACs */ + SND_SOC_DAPM_SUPPLY("DAC", SUNXI_DAC_DPC, SUNXI_DAC_DPC_EN_DA, 0, NULL, 0), + + /* Analog parts of the DACs */ + SND_SOC_DAPM_DAC("Left DAC", NULL, SUNXI_DAC_ACTL, SUNXI_DAC_ACTL_DACAENL, 0), + SND_SOC_DAPM_DAC("Right DAC", NULL, SUNXI_DAC_ACTL, SUNXI_DAC_ACTL_DACAENR, 0), + + SND_SOC_DAPM_SWITCH("PA", SUNXI_ADC_ACTL, SUNXI_ADC_ACTL_PA_EN, 0, &sunxi_pa), + SND_SOC_DAPM_SWITCH("PA Mute", SUNXI_DAC_ACTL, SUNXI_DAC_ACTL_PA_MUTE, 0, &sunxi_pa_mute), + + SND_SOC_DAPM_MUX("Right Mixer", SUNXI_DAC_ACTL, SUNXI_DAC_ACTL_LDACRMIXS, 0, &right_mixer), + SND_SOC_DAPM_MUX("Left Mixer", SUNXI_DAC_ACTL, SUNXI_DAC_ACTL_LDACLMIXS, 0, &left_mixer), + SND_SOC_DAPM_SWITCH("Mixer", SUNXI_DAC_ACTL, SUNXI_DAC_ACTL_MIXEN, 0, &sunxi_mixer), + + SND_SOC_DAPM_MUX("DAC Output", SUNXI_DAC_ACTL, SUNXI_DAC_ACTL_MIXPAS, 0, &sunxi_dac_output), + + SND_SOC_DAPM_OUTPUT("Mic Bias"), + SND_SOC_DAPM_OUTPUT("HP Right"), + SND_SOC_DAPM_OUTPUT("HP Left"), + SND_SOC_DAPM_INPUT("MIC_IN"), + SND_SOC_DAPM_INPUT("LINE_IN"), +}; + +static const struct snd_soc_dapm_route codec_dapm_routes[] = { + /* DAC block */ + { "Left DAC", NULL, "Codec Playback" }, + { "Right DAC", NULL, "Codec Playback" }, + { "Left DAC", NULL, "DAC" }, + { "Right DAC", NULL, "DAC" }, + + /* DAC -> PA path */ + { "DAC Output", "Direct", "Left DAC" }, + { "DAC Output", "Direct", "Right DAC" }, + { "PA", NULL, "DAC Output"}, + + /* DAC -> MIX -> PA path */ + { "Left Mixer", "Left", "Left DAC" }, + { "Right Mixer", "Right", "Right DAC" }, + { "Mixer", NULL, "Left Mixer" }, + { "Mixer", NULL, "Right Mixer" }, + { "DAC Output", "Mixed", "Mixer" }, + { "PA", NULL, "DAC Output" }, + + /* PA -> HP path */ + { "PA Mute", NULL, "PA" }, + { "HP Right", NULL, "PA Mute" }, + { "HP Left", NULL, "PA Mute" }, +}; + +static struct snd_soc_codec_driver sunxi_codec = { + .controls = sunxi_codec_widgets, + .num_controls = ARRAY_SIZE(sunxi_codec_widgets), + .dapm_widgets = codec_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(codec_dapm_widgets), + .dapm_routes = codec_dapm_routes, + .num_dapm_routes = ARRAY_SIZE(codec_dapm_routes), +}; + +/*** Board routing ***/ +/* TODO: do this with DT */ + +static const struct snd_soc_dapm_widget sunxi_board_dapm_widgets[] = { + SND_SOC_DAPM_HP("Headphone Jack", NULL), +}; + +static const struct snd_soc_dapm_route sunxi_board_routing[] = { + { "Headphone Jack", NULL, "HP Right" }, + { "Headphone Jack", NULL, "HP Left" }, +}; + +/*** Card and DAI Link ***/ + +static struct snd_soc_dai_link cdc_dai = { + .name = "cdc", + + .stream_name = "CDC PCM", + .codec_dai_name = "Codec", + .cpu_dai_name = "1c22c00.codec", + .codec_name = "1c22c00.codec", + .platform_name = "1c22c00.codec", + .dai_fmt = SND_SOC_DAIFMT_I2S, +}; + +static struct snd_soc_card snd_soc_sunxi_codec = { + .name = "sunxi-codec", + .owner = THIS_MODULE, + .dai_link = &cdc_dai, + .num_links = 1, + .dapm_widgets = sunxi_board_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(sunxi_board_dapm_widgets), + .dapm_routes = sunxi_board_routing, + .num_dapm_routes = ARRAY_SIZE(sunxi_board_routing), +}; + +/*** CPU DAI ***/ + +static const struct snd_soc_component_driver sunxi_codec_component = { + .name = "sunxi-codec", +}; + +#define SUNXI_RATES SNDRV_PCM_RATE_8000_192000 +#define SUNXI_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \ + SNDRV_PCM_FMTBIT_S32_LE) + +static struct snd_soc_dai_driver dummy_cpu_dai = { + .name = "sunxi-cpu-dai", + .probe = sunxi_codec_dai_probe, + .playback = { + .stream_name = "Playback", + .channels_min = 1, + .channels_max = 2, + .rates = SUNXI_RATES, + .formats = SUNXI_FORMATS, + .sig_bits = 24, + }, + .capture = { + .stream_name = "Capture", + .channels_min = 1, + .channels_max = 2, + .rates = SUNXI_RATES, + .formats = SUNXI_FORMATS, + .sig_bits = 24, + }, +}; + +static const struct regmap_config sunxi_codec_regmap_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .max_register = SUNXI_AC_MIC_PHONE_CAL, +}; + +static const struct of_device_id sunxi_codec_of_match[] = { + { .compatible = "allwinner,sun4i-a10a-codec", .data = (void *)SUN4IA}, + { .compatible = "allwinner,sun4i-a10-codec", .data = (void *)SUN4I}, + { .compatible = "allwinner,sun5i-a13-codec", .data = (void *)SUN5I}, + { .compatible = "allwinner,sun7i-a20-codec", .data = (void *)SUN7I}, + {} +}; +MODULE_DEVICE_TABLE(of, sunxi_codec_of_match); + +static int sunxi_codec_probe(struct platform_device *pdev) +{ + struct device_node *np = pdev->dev.of_node; + struct snd_soc_card *card = &snd_soc_sunxi_codec; + const struct of_device_id *of_id; + struct device *dev = &pdev->dev; + struct sunxi_priv *priv; + struct resource *res; + void __iomem *base; + int ret; + + if (!of_device_is_available(np)) + return -ENODEV; + + of_id = of_match_device(sunxi_codec_of_match, dev); + if (!of_id) + return -EINVAL; + + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + card->dev = &pdev->dev; + platform_set_drvdata(pdev, card); + snd_soc_card_set_drvdata(card, priv); + + priv->revision = (enum sunxi_soc_family)of_id->data; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(base)) + return PTR_ERR(base); + + priv->regmap = devm_regmap_init_mmio(&pdev->dev, base, + &sunxi_codec_regmap_config); + if (IS_ERR(priv->regmap)) + return PTR_ERR(priv->regmap); + + /* Get the clocks from the DT */ + priv->clk_apb = devm_clk_get(dev, "apb"); + if (IS_ERR(priv->clk_apb)) { + dev_err(dev, "failed to get apb clock\n"); + return PTR_ERR(priv->clk_apb); + } + priv->clk_module = devm_clk_get(dev, "codec"); + if (IS_ERR(priv->clk_module)) { + dev_err(dev, "failed to get codec clock\n"); + return PTR_ERR(priv->clk_module); + } + + /* Enable the clock on a basic rate */ + ret = clk_set_rate(priv->clk_module, 24576000); + if (ret) { + dev_err(dev, "failed to set codec base clock rate\n"); + return ret; + } + + /* Enable the bus clock */ + if (clk_prepare_enable(priv->clk_apb)) { + dev_err(dev, "failed to enable apb clock\n"); + clk_disable_unprepare(priv->clk_module); + return -EINVAL; + } + + /* DMA configuration for TX FIFO */ + priv->playback_dma_data.addr = res->start + SUNXI_DAC_TXDATA; + priv->playback_dma_data.maxburst = 4; + priv->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES; + + /* DMA configuration for RX FIFO */ + priv->capture_dma_data.addr = res->start + SUNXI_ADC_RXDATA; + priv->capture_dma_data.maxburst = 4; + priv->capture_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES; + + ret = snd_soc_register_codec(&pdev->dev, &sunxi_codec, &sunxi_codec_dai, 1); + + ret = devm_snd_soc_register_component(&pdev->dev, &sunxi_codec_component, &dummy_cpu_dai, 1); + if (ret) + goto err_clk_disable; + + ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0); + if (ret) + goto err_clk_disable; + + sunxi_codec_init(priv); + + ret = snd_soc_register_card(card); + if (ret) { + dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret); + goto err_fini_utils; + } + + ret = snd_soc_of_parse_audio_routing(card, "routing"); + if (ret) + goto err; + + return 0; + +err_fini_utils: +err: +err_clk_disable: + clk_disable_unprepare(priv->clk_apb); + return ret; +} + +static int sunxi_codec_remove(struct platform_device *pdev) +{ + struct sunxi_priv *priv = platform_get_drvdata(pdev); + + clk_disable_unprepare(priv->clk_apb); + clk_disable_unprepare(priv->clk_module); + + return 0; +} + +static struct platform_driver sunxi_codec_driver = { + .driver = { + .name = "sunxi-codec", + .owner = THIS_MODULE, + .of_match_table = sunxi_codec_of_match, + }, + .probe = sunxi_codec_probe, + .remove = sunxi_codec_remove, +}; +module_platform_driver(sunxi_codec_driver); + +MODULE_DESCRIPTION("sunxi codec ASoC driver"); +MODULE_AUTHOR("Emilio López "); +MODULE_AUTHOR("Jon Smirl "); +MODULE_LICENSE("GPL");