Add bindings for StarFive JH7110 dummy PWM-DAC transmitter.

Signed-off-by: Hal Feng hal.feng@starfivetech.com --- .../sound/starfive,jh7110-pwmdac-dit.yaml | 38 +++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/starfive,jh7110-pwmdac-dit.yaml

diff --git a/Documentation/devicetree/bindings/sound/starfive,jh7110-pwmdac-dit.yaml b/Documentation/devicetree/bindings/sound/starfive,jh7110-pwmdac-dit.yaml new file mode 100644 index 000000000000..bc43e3b1e9d2 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/starfive,jh7110-pwmdac-dit.yaml @@ -0,0 +1,38 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/sound/starfive,jh7110-pwmdac-dit.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: StarFive JH7110 Dummy PWM-DAC Transmitter + +maintainers: + - Hal Feng hal.feng@starfivetech.com + +allOf: + - $ref: dai-common.yaml# + +properties: + compatible: + const: starfive,jh7110-pwmdac-dit + + "#sound-dai-cells": + const: 0 + + sound-name-prefix: true + +required: + - compatible + - "#sound-dai-cells" + +additionalProperties: false + +examples: + - | + pwmdac-dit { + compatible = "starfive,jh7110-pwmdac-dit"; + #sound-dai-cells = <0>; + }; + +... +

Add a dummy transmitter driver for StarFive JH7110 PWM-DAC module. StarFive JH7110 PWM-DAC controller uses this driver.

Signed-off-by: Hal Feng hal.feng@starfivetech.com --- sound/soc/codecs/Kconfig | 4 ++ sound/soc/codecs/Makefile | 2 + sound/soc/codecs/jh7110_pwmdac_transmitter.c | 74 ++++++++++++++++++++ 3 files changed, 80 insertions(+) create mode 100644 sound/soc/codecs/jh7110_pwmdac_transmitter.c

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig index 8020097d4e4c..f2cd8f999649 100644 --- a/sound/soc/codecs/Kconfig +++ b/sound/soc/codecs/Kconfig @@ -115,6 +115,7 @@ config SND_SOC_ALL_CODECS imply SND_SOC_IDT821034 imply SND_SOC_INNO_RK3036 imply SND_SOC_ISABELLE + imply SND_SOC_JH7110_PWMDAC_DIT imply SND_SOC_JZ4740_CODEC imply SND_SOC_JZ4725B_CODEC imply SND_SOC_JZ4760_CODEC @@ -903,6 +904,9 @@ config SND_SOC_CX2072X help Enable support for Conexant CX20721 and CX20723 codec chips.

+config SND_SOC_JH7110_PWMDAC_DIT + tristate "StarFive JH7110 dummy PWM-DAC transmitter" + config SND_SOC_JZ4740_CODEC depends on MACH_INGENIC || COMPILE_TEST depends on OF diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile index 5cdbae88e6e3..8e0e12d7b959 100644 --- a/sound/soc/codecs/Makefile +++ b/sound/soc/codecs/Makefile @@ -122,6 +122,7 @@ snd-soc-ics43432-objs := ics43432.o snd-soc-idt821034-objs := idt821034.o snd-soc-inno-rk3036-objs := inno_rk3036.o snd-soc-isabelle-objs := isabelle.o +snd-soc-jh7110-pwmdac-dit-objs := jh7110_pwmdac_transmitter.o snd-soc-jz4740-codec-objs := jz4740.o snd-soc-jz4725b-codec-objs := jz4725b.o snd-soc-jz4760-codec-objs := jz4760.o @@ -496,6 +497,7 @@ obj-$(CONFIG_SND_SOC_ICS43432) += snd-soc-ics43432.o obj-$(CONFIG_SND_SOC_IDT821034) += snd-soc-idt821034.o obj-$(CONFIG_SND_SOC_INNO_RK3036) += snd-soc-inno-rk3036.o obj-$(CONFIG_SND_SOC_ISABELLE) += snd-soc-isabelle.o +obj-$(CONFIG_SND_SOC_JH7110_PWMDAC_DIT) += snd-soc-jh7110-pwmdac-dit.o obj-$(CONFIG_SND_SOC_JZ4740_CODEC) += snd-soc-jz4740-codec.o obj-$(CONFIG_SND_SOC_JZ4725B_CODEC) += snd-soc-jz4725b-codec.o obj-$(CONFIG_SND_SOC_JZ4760_CODEC) += snd-soc-jz4760-codec.o diff --git a/sound/soc/codecs/jh7110_pwmdac_transmitter.c b/sound/soc/codecs/jh7110_pwmdac_transmitter.c new file mode 100644 index 000000000000..69077be840c7 --- /dev/null +++ b/sound/soc/codecs/jh7110_pwmdac_transmitter.c @@ -0,0 +1,74 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Dummy PWM-DAC transmitter driver for the StarFive JH7110 SoC + * + * Copyright (C) 2021-2023 StarFive Technology Co., Ltd. + */ + +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/of.h> +#include <linux/slab.h> +#include <sound/initval.h> +#include <sound/pcm.h> +#include <sound/soc.h> + +#define DRV_NAME "pwmdac-dit" + +static const struct snd_soc_dapm_widget dit_widgets[] = { + SND_SOC_DAPM_OUTPUT("pwmdac-out"), +}; + +static const struct snd_soc_dapm_route dit_routes[] = { + { "pwmdac-out", NULL, "Playback" }, +}; + +static const struct snd_soc_component_driver soc_codec_pwmdac_dit = { + .dapm_widgets = dit_widgets, + .num_dapm_widgets = ARRAY_SIZE(dit_widgets), + .dapm_routes = dit_routes, + .num_dapm_routes = ARRAY_SIZE(dit_routes), + .idle_bias_on = 1, + .use_pmdown_time = 1, + .endianness = 1, +}; + +static struct snd_soc_dai_driver dit_stub_dai = { + .name = "pwmdac-dit-hifi", + .playback = { + .stream_name = "Playback", + .channels_min = 1, + .channels_max = 384, + .rates = SNDRV_PCM_RATE_8000_48000, + .formats = SNDRV_PCM_FMTBIT_S16_LE, + }, +}; + +static int pwmdac_dit_probe(struct platform_device *pdev) +{ + return devm_snd_soc_register_component(&pdev->dev, + &soc_codec_pwmdac_dit, + &dit_stub_dai, 1); +} + +#ifdef CONFIG_OF +static const struct of_device_id pwmdac_dit_dt_ids[] = { + { .compatible = "starfive,jh7110-pwmdac-dit", }, + { } +}; +MODULE_DEVICE_TABLE(of, pwmdac_dit_dt_ids); +#endif + +static struct platform_driver pwmdac_dit_driver = { + .probe = pwmdac_dit_probe, + .driver = { + .name = DRV_NAME, + .of_match_table = of_match_ptr(pwmdac_dit_dt_ids), + }, +}; + +module_platform_driver(pwmdac_dit_driver); + +MODULE_DESCRIPTION("StarFive JH7110 dummy PWM-DAC transmitter driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:" DRV_NAME);

Add PWM-DAC driver support for the StarFive JH7110 SoC.

Signed-off-by: Hal Feng hal.feng@starfivetech.com --- MAINTAINERS | 8 + sound/soc/starfive/Kconfig | 9 + sound/soc/starfive/Makefile | 1 + sound/soc/starfive/jh7110_pwmdac.c | 787 +++++++++++++++++++++++++++++ 4 files changed, 805 insertions(+) create mode 100644 sound/soc/starfive/jh7110_pwmdac.c

diff --git a/MAINTAINERS b/MAINTAINERS index 1dc12c5c02f7..a936ba4d5f1d 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -20125,6 +20125,14 @@ S: Supported F: Documentation/devicetree/bindings/mmc/starfive* F: drivers/mmc/host/dw_mmc-starfive.c

+STARFIVE JH7110 PWMDAC DRIVER +M: Hal Feng hal.feng@starfivetech.com +M: Xingyu Wu xingyu.wu@starfivetech.com +S: Supported +F: Documentation/devicetree/bindings/sound/starfive,jh7110-pwmdac* +F: sound/soc/codecs/jh7110_pwmdac_transmitter.c +F: sound/soc/starfive/jh7110_pwmdac.c + STARFIVE JH71X0 CLOCK DRIVERS M: Emil Renner Berthing kernel@esmil.dk M: Hal Feng hal.feng@starfivetech.com diff --git a/sound/soc/starfive/Kconfig b/sound/soc/starfive/Kconfig index fafb681f8c0a..fabef377db8c 100644 --- a/sound/soc/starfive/Kconfig +++ b/sound/soc/starfive/Kconfig @@ -7,6 +7,15 @@ config SND_SOC_STARFIVE the Starfive SoCs' Audio interfaces. You will also need to select the audio interfaces to support below.

+config SND_SOC_JH7110_PWMDAC + tristate "JH7110 PWM-DAC device driver" + depends on HAVE_CLK && SND_SOC_STARFIVE + select SND_SOC_GENERIC_DMAENGINE_PCM + select SND_SOC_JH7110_PWMDAC_DIT + help + Say Y or M if you want to add support for StarFive JH7110 + PWM-DAC driver. + config SND_SOC_JH7110_TDM tristate "JH7110 TDM device driver" depends on HAVE_CLK && SND_SOC_STARFIVE diff --git a/sound/soc/starfive/Makefile b/sound/soc/starfive/Makefile index f7d960211d72..9e958f70ef51 100644 --- a/sound/soc/starfive/Makefile +++ b/sound/soc/starfive/Makefile @@ -1,2 +1,3 @@ # StarFive Platform Support +obj-$(CONFIG_SND_SOC_JH7110_PWMDAC) += jh7110_pwmdac.o obj-$(CONFIG_SND_SOC_JH7110_TDM) += jh7110_tdm.o diff --git a/sound/soc/starfive/jh7110_pwmdac.c b/sound/soc/starfive/jh7110_pwmdac.c new file mode 100644 index 000000000000..c3123bd6ea45 --- /dev/null +++ b/sound/soc/starfive/jh7110_pwmdac.c @@ -0,0 +1,787 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * jh7110_pwmdac.c -- StarFive JH7110 PWM-DAC driver + * + * Copyright (C) 2021-2023 StarFive Technology Co., Ltd. + * + * Authors: Jenny Zhang + * Curry Zhang + * Xingyu Wu xingyu.wu@starfivetech.com + * Hal Feng hal.feng@starfivetech.com + */ + +#include <linux/clk.h> +#include <linux/device.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/pm_runtime.h> +#include <linux/reset.h> +#include <linux/slab.h> +#include <linux/types.h> +#include <sound/dmaengine_pcm.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> + +#define JH7110_PWMDAC_WDATA 0x00 +#define JH7110_PWMDAC_CTRL 0x04 + #define JH7110_PWMDAC_ENABLE BIT(0) + #define JH7110_PWMDAC_SHIFT BIT(1) + #define JH7110_PWMDAC_DUTY_CYCLE_SHIFT 2 + #define JH7110_PWMDAC_DUTY_CYCLE_MASK GENMASK(3, 2) + #define JH7110_PWMDAC_CNT_N_SHIFT 4 + #define JH7110_PWMDAC_CNT_N_MASK GENMASK(12, 4) + #define JH7110_PWMDAC_DATA_CHANGE BIT(13) + #define JH7110_PWMDAC_DATA_MODE BIT(14) + #define JH7110_PWMDAC_DATA_SHIFT_SHIFT 15 + #define JH7110_PWMDAC_DATA_SHIFT_MASK GENMASK(17, 15) + +enum JH7110_PWMDAC_SHIFT_VAL { + PWMDAC_SHIFT_8 = 0, + PWMDAC_SHIFT_10, +}; + +enum JH7110_PWMDAC_DUTY_CYCLE_VAL { + PWMDAC_CYCLE_LEFT = 0, + PWMDAC_CYCLE_RIGHT, + PWMDAC_CYCLE_CENTER, +}; + +enum JH7110_PWMDAC_CNT_N_VAL { + PWMDAC_SAMPLE_CNT_1 = 1, + PWMDAC_SAMPLE_CNT_2, + PWMDAC_SAMPLE_CNT_3, + PWMDAC_SAMPLE_CNT_512 = 512, /* max */ +}; + +enum JH7110_PWMDAC_DATA_CHANGE_VAL { + NO_CHANGE = 0, + CHANGE, +}; + +enum JH7110_PWMDAC_DATA_MODE_VAL { + UNSIGNED_DATA = 0, + INVERTER_DATA_MSB, +}; + +enum JH7110_PWMDAC_DATA_SHIFT_VAL { + PWMDAC_DATA_LEFT_SHIFT_BIT_0 = 0, + PWMDAC_DATA_LEFT_SHIFT_BIT_1, + PWMDAC_DATA_LEFT_SHIFT_BIT_2, + PWMDAC_DATA_LEFT_SHIFT_BIT_3, + PWMDAC_DATA_LEFT_SHIFT_BIT_4, + PWMDAC_DATA_LEFT_SHIFT_BIT_5, + PWMDAC_DATA_LEFT_SHIFT_BIT_6, + PWMDAC_DATA_LEFT_SHIFT_BIT_7, +}; + +struct jh7110_pwmdac_dev { + void __iomem *base; + resource_size_t mapbase; + u8 shift; + u8 duty_cycle; + u8 cnt_n; + u8 data_change; + u8 data_mode; + u8 data_shift; + + struct clk_bulk_data clks[2]; + struct reset_control *rst_apb; + struct device *dev; + struct snd_dmaengine_dai_dma_data play_dma_data; + u32 saved_ctrl; +}; + +enum jh7110_ct_pwmdac_name { + PWMDAC_CT_SHIFT = 0, + PWMDAC_CT_DUTY_CYCLE, + PWMDAC_CT_DATA_CHANGE, + PWMDAC_CT_DATA_MODE, + PWMDAC_CT_DATA_SHIFT, +}; + +struct jh7110_ct_pwmdac { + char *name; + unsigned int vals; +}; + +static const struct jh7110_ct_pwmdac pwmdac_ct_shift[] = { + { .name = "8bit", .vals = PWMDAC_SHIFT_8 }, + { .name = "10bit", .vals = PWMDAC_SHIFT_10 } +}; + +static const struct jh7110_ct_pwmdac pwmdac_ct_duty_cycle[] = { + { .name = "left", .vals = PWMDAC_CYCLE_LEFT }, + { .name = "right", .vals = PWMDAC_CYCLE_RIGHT }, + { .name = "center", .vals = PWMDAC_CYCLE_CENTER } +}; + +static const struct jh7110_ct_pwmdac pwmdac_ct_data_change[] = { + { .name = "no_change", .vals = NO_CHANGE }, + { .name = "change", .vals = CHANGE } +}; + +static const struct jh7110_ct_pwmdac pwmdac_ct_data_mode[] = { + { .name = "unsigned", .vals = UNSIGNED_DATA }, + { .name = "inverter", .vals = INVERTER_DATA_MSB } +}; + +static const struct jh7110_ct_pwmdac pwmdac_ct_data_shift[] = { + { .name = "left 0 bit", .vals = PWMDAC_DATA_LEFT_SHIFT_BIT_0 }, + { .name = "left 1 bit", .vals = PWMDAC_DATA_LEFT_SHIFT_BIT_1 }, + { .name = "left 2 bit", .vals = PWMDAC_DATA_LEFT_SHIFT_BIT_2 }, + { .name = "left 3 bit", .vals = PWMDAC_DATA_LEFT_SHIFT_BIT_3 }, + { .name = "left 4 bit", .vals = PWMDAC_DATA_LEFT_SHIFT_BIT_4 }, + { .name = "left 5 bit", .vals = PWMDAC_DATA_LEFT_SHIFT_BIT_5 }, + { .name = "left 6 bit", .vals = PWMDAC_DATA_LEFT_SHIFT_BIT_6 }, + { .name = "left 7 bit", .vals = PWMDAC_DATA_LEFT_SHIFT_BIT_7 } +}; + +static int jh7110_pwmdac_info(struct snd_ctl_elem_info *uinfo, int pwmdac_ct) +{ + unsigned int items; + + if (pwmdac_ct == PWMDAC_CT_SHIFT) { + items = ARRAY_SIZE(pwmdac_ct_shift); + strcpy(uinfo->value.enumerated.name, + pwmdac_ct_shift[uinfo->value.enumerated.item].name); + } else if (pwmdac_ct == PWMDAC_CT_DUTY_CYCLE) { + items = ARRAY_SIZE(pwmdac_ct_duty_cycle); + strcpy(uinfo->value.enumerated.name, + pwmdac_ct_duty_cycle[uinfo->value.enumerated.item].name); + } else if (pwmdac_ct == PWMDAC_CT_DATA_CHANGE) { + items = ARRAY_SIZE(pwmdac_ct_data_change); + strcpy(uinfo->value.enumerated.name, + pwmdac_ct_data_change[uinfo->value.enumerated.item].name); + } else if (pwmdac_ct == PWMDAC_CT_DATA_MODE) { + items = ARRAY_SIZE(pwmdac_ct_data_mode); + strcpy(uinfo->value.enumerated.name, + pwmdac_ct_data_mode[uinfo->value.enumerated.item].name); + } else if (pwmdac_ct == PWMDAC_CT_DATA_SHIFT) { + items = ARRAY_SIZE(pwmdac_ct_data_shift); + strcpy(uinfo->value.enumerated.name, + pwmdac_ct_data_shift[uinfo->value.enumerated.item].name); + } + + uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; + uinfo->count = 1; + uinfo->value.enumerated.items = items; + if (uinfo->value.enumerated.item >= items) + uinfo->value.enumerated.item = items - 1; + + return 0; +} + +static int jh7110_pwmdac_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol, + int pwmdac_ct) +{ + struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); + struct jh7110_pwmdac_dev *dev = snd_soc_component_get_drvdata(component); + + if (pwmdac_ct == PWMDAC_CT_SHIFT) + ucontrol->value.enumerated.item[0] = dev->shift; + else if (pwmdac_ct == PWMDAC_CT_DUTY_CYCLE) + ucontrol->value.enumerated.item[0] = dev->duty_cycle; + else if (pwmdac_ct == PWMDAC_CT_DATA_CHANGE) + ucontrol->value.enumerated.item[0] = dev->data_change; + else if (pwmdac_ct == PWMDAC_CT_DATA_MODE) + ucontrol->value.enumerated.item[0] = dev->data_mode; + else if (pwmdac_ct == PWMDAC_CT_DATA_SHIFT) + ucontrol->value.enumerated.item[0] = dev->data_shift; + + return 0; +} + +static int jh7110_pwmdac_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol, + int pwmdac_ct) +{ + struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); + struct jh7110_pwmdac_dev *dev = snd_soc_component_get_drvdata(component); + int sel = ucontrol->value.enumerated.item[0]; + unsigned int items; + + if (pwmdac_ct == PWMDAC_CT_SHIFT) + items = ARRAY_SIZE(pwmdac_ct_shift); + else if (pwmdac_ct == PWMDAC_CT_DUTY_CYCLE) + items = ARRAY_SIZE(pwmdac_ct_duty_cycle); + else if (pwmdac_ct == PWMDAC_CT_DATA_CHANGE) + items = ARRAY_SIZE(pwmdac_ct_data_change); + else if (pwmdac_ct == PWMDAC_CT_DATA_MODE) + items = ARRAY_SIZE(pwmdac_ct_data_mode); + else if (pwmdac_ct == PWMDAC_CT_DATA_SHIFT) + items = ARRAY_SIZE(pwmdac_ct_data_shift); + + if (sel >= items) + return -EINVAL; + + if (pwmdac_ct == PWMDAC_CT_SHIFT) + dev->shift = pwmdac_ct_shift[sel].vals; + else if (pwmdac_ct == PWMDAC_CT_DUTY_CYCLE) + dev->duty_cycle = pwmdac_ct_duty_cycle[sel].vals; + else if (pwmdac_ct == PWMDAC_CT_DATA_CHANGE) + dev->data_change = pwmdac_ct_data_change[sel].vals; + else if (pwmdac_ct == PWMDAC_CT_DATA_MODE) + dev->data_mode = pwmdac_ct_data_mode[sel].vals; + else if (pwmdac_ct == PWMDAC_CT_DATA_SHIFT) + dev->data_shift = pwmdac_ct_data_shift[sel].vals; + + return 0; +} + +static int jh7110_pwmdac_shift_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + return jh7110_pwmdac_info(uinfo, PWMDAC_CT_SHIFT); +} + +static int jh7110_pwmdac_shift_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + return jh7110_pwmdac_get(kcontrol, ucontrol, PWMDAC_CT_SHIFT); +} + +static int jh7110_pwmdac_shift_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + return jh7110_pwmdac_put(kcontrol, ucontrol, PWMDAC_CT_SHIFT); +} + +static int jh7110_pwmdac_duty_cycle_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + return jh7110_pwmdac_info(uinfo, PWMDAC_CT_DUTY_CYCLE); +} + +static int jh7110_pwmdac_duty_cycle_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + return jh7110_pwmdac_get(kcontrol, ucontrol, PWMDAC_CT_DUTY_CYCLE); +} + +static int jh7110_pwmdac_duty_cycle_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + return jh7110_pwmdac_put(kcontrol, ucontrol, PWMDAC_CT_DUTY_CYCLE); +} + +static int jh7110_pwmdac_data_change_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + return jh7110_pwmdac_info(uinfo, PWMDAC_CT_DATA_CHANGE); +} + +static int jh7110_pwmdac_data_change_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + return jh7110_pwmdac_get(kcontrol, ucontrol, PWMDAC_CT_DATA_CHANGE); +} + +static int jh7110_pwmdac_data_change_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + return jh7110_pwmdac_put(kcontrol, ucontrol, PWMDAC_CT_DATA_CHANGE); +} + +static int jh7110_pwmdac_data_mode_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + return jh7110_pwmdac_info(uinfo, PWMDAC_CT_DATA_MODE); +} + +static int jh7110_pwmdac_data_mode_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + return jh7110_pwmdac_get(kcontrol, ucontrol, PWMDAC_CT_DATA_MODE); +} + +static int jh7110_pwmdac_data_mode_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + return jh7110_pwmdac_put(kcontrol, ucontrol, PWMDAC_CT_DATA_MODE); +} + +static int jh7110_pwmdac_data_shift_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo) +{ + return jh7110_pwmdac_info(uinfo, PWMDAC_CT_DATA_SHIFT); +} + +static int jh7110_pwmdac_data_shift_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + return jh7110_pwmdac_get(kcontrol, ucontrol, PWMDAC_CT_DATA_SHIFT); +} + +static int jh7110_pwmdac_data_shift_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + return jh7110_pwmdac_put(kcontrol, ucontrol, PWMDAC_CT_DATA_SHIFT); +} + +static inline void jh7110_pwmdac_write_reg(void __iomem *io_base, int reg, u32 val) +{ + writel(val, io_base + reg); +} + +static inline u32 jh7110_pwmdac_read_reg(void __iomem *io_base, int reg) +{ + return readl(io_base + reg); +} + +static void jh7110_pwmdac_set_enable(struct jh7110_pwmdac_dev *dev, bool enable) +{ + u32 value; + + value = jh7110_pwmdac_read_reg(dev->base, JH7110_PWMDAC_CTRL); + if (enable) + value |= JH7110_PWMDAC_ENABLE; + else + value &= ~JH7110_PWMDAC_ENABLE; + + jh7110_pwmdac_write_reg(dev->base, JH7110_PWMDAC_CTRL, value); +} + +static void jh7110_pwmdac_set_shift(struct jh7110_pwmdac_dev *dev) +{ + u32 value; + + value = jh7110_pwmdac_read_reg(dev->base, JH7110_PWMDAC_CTRL); + if (dev->shift == PWMDAC_SHIFT_8) + value &= ~JH7110_PWMDAC_SHIFT; + else if (dev->shift == PWMDAC_SHIFT_10) + value |= JH7110_PWMDAC_SHIFT; + + jh7110_pwmdac_write_reg(dev->base, JH7110_PWMDAC_CTRL, value); +} + +static void jh7110_pwmdac_set_duty_cycle(struct jh7110_pwmdac_dev *dev) +{ + u32 value; + + value = jh7110_pwmdac_read_reg(dev->base, JH7110_PWMDAC_CTRL); + value &= ~JH7110_PWMDAC_DUTY_CYCLE_MASK; + value |= (dev->duty_cycle & 0x3) << JH7110_PWMDAC_DUTY_CYCLE_SHIFT; + + jh7110_pwmdac_write_reg(dev->base, JH7110_PWMDAC_CTRL, value); +} + +static void jh7110_pwmdac_set_cnt_n(struct jh7110_pwmdac_dev *dev) +{ + u32 value; + + value = jh7110_pwmdac_read_reg(dev->base, JH7110_PWMDAC_CTRL); + value &= ~JH7110_PWMDAC_CNT_N_MASK; + value |= ((dev->cnt_n - 1) & 0x1ff) << JH7110_PWMDAC_CNT_N_SHIFT; + + jh7110_pwmdac_write_reg(dev->base, JH7110_PWMDAC_CTRL, value); +} + +static void jh7110_pwmdac_set_data_change(struct jh7110_pwmdac_dev *dev) +{ + u32 value; + + value = jh7110_pwmdac_read_reg(dev->base, JH7110_PWMDAC_CTRL); + if (dev->data_change == NO_CHANGE) + value &= ~JH7110_PWMDAC_DATA_CHANGE; + else if (dev->data_change == CHANGE) + value |= JH7110_PWMDAC_DATA_CHANGE; + + jh7110_pwmdac_write_reg(dev->base, JH7110_PWMDAC_CTRL, value); +} + +static void jh7110_pwmdac_set_data_mode(struct jh7110_pwmdac_dev *dev) +{ + u32 value; + + value = jh7110_pwmdac_read_reg(dev->base, JH7110_PWMDAC_CTRL); + if (dev->data_mode == UNSIGNED_DATA) + value &= ~JH7110_PWMDAC_DATA_MODE; + else if (dev->data_mode == INVERTER_DATA_MSB) + value |= JH7110_PWMDAC_DATA_MODE; + + jh7110_pwmdac_write_reg(dev->base, JH7110_PWMDAC_CTRL, value); +} + +static void jh7110_pwmdac_set_data_shift(struct jh7110_pwmdac_dev *dev) +{ + u32 value; + + value = jh7110_pwmdac_read_reg(dev->base, JH7110_PWMDAC_CTRL); + value &= ~JH7110_PWMDAC_DATA_SHIFT_MASK; + value |= (dev->data_shift & 0x7) << JH7110_PWMDAC_DATA_SHIFT_SHIFT; + + jh7110_pwmdac_write_reg(dev->base, JH7110_PWMDAC_CTRL, value); +} + +static void jh7110_pwmdac_set(struct jh7110_pwmdac_dev *dev) +{ + jh7110_pwmdac_set_shift(dev); + jh7110_pwmdac_set_duty_cycle(dev); + jh7110_pwmdac_set_cnt_n(dev); + jh7110_pwmdac_set_enable(dev, true); + + jh7110_pwmdac_set_data_change(dev); + jh7110_pwmdac_set_data_mode(dev); + jh7110_pwmdac_set_data_shift(dev); +} + +static void jh7110_pwmdac_stop(struct jh7110_pwmdac_dev *dev) +{ + jh7110_pwmdac_set_enable(dev, false); +} + +static int jh7110_pwmdac_startup(struct snd_pcm_substream *substream, + struct snd_soc_dai *dai) +{ + struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); + struct snd_soc_dai_link *dai_link = rtd->dai_link; + + dai_link->stop_dma_first = 1; + + return 0; +} + +static int jh7110_pwmdac_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *dai) +{ + unsigned long core_clk_rate; + int ret; + struct jh7110_pwmdac_dev *dev = dev_get_drvdata(dai->dev); + + switch (params_rate(params)) { + case 8000: + dev->cnt_n = PWMDAC_SAMPLE_CNT_3; + core_clk_rate = 6144000; + break; + case 11025: + dev->cnt_n = PWMDAC_SAMPLE_CNT_2; + core_clk_rate = 5644800; + break; + case 16000: + dev->cnt_n = PWMDAC_SAMPLE_CNT_3; + core_clk_rate = 12288000; + break; + case 22050: + dev->cnt_n = PWMDAC_SAMPLE_CNT_1; + core_clk_rate = 5644800; + break; + case 32000: + dev->cnt_n = PWMDAC_SAMPLE_CNT_1; + core_clk_rate = 8192000; + break; + case 44100: + dev->cnt_n = PWMDAC_SAMPLE_CNT_1; + core_clk_rate = 11289600; + break; + case 48000: + dev->cnt_n = PWMDAC_SAMPLE_CNT_1; + core_clk_rate = 12288000; + break; + default: + dev_err(dai->dev, "%d rate not supported\n", + params_rate(params)); + return -EINVAL; + } + + switch (params_channels(params)) { + case 1: + dev->play_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES; + break; + case 2: + dev->play_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; + break; + default: + dev_err(dai->dev, "%d channels not supported\n", + params_channels(params)); + return -EINVAL; + } + + /* + * The clock rate always rounds down when using clk_set_rate() + * so increase the rate a bit + */ + core_clk_rate += 64; + jh7110_pwmdac_set(dev); + + ret = clk_set_rate(dev->clks[1].clk, core_clk_rate); + if (ret) { + dev_err(dai->dev, + "failed to set rate %lu for core clock\n", + core_clk_rate); + return ret; + } + + return 0; +} + +static int jh7110_pwmdac_trigger(struct snd_pcm_substream *substream, int cmd, + struct snd_soc_dai *dai) +{ + struct jh7110_pwmdac_dev *dev = snd_soc_dai_get_drvdata(dai); + int ret = 0; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + jh7110_pwmdac_set(dev); + break; + + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + jh7110_pwmdac_stop(dev); + break; + default: + ret = -EINVAL; + break; + } + + return ret; +} + +static int jh7110_pwmdac_crg_enable(struct jh7110_pwmdac_dev *dev, bool enable) +{ + int ret; + + if (enable) { + ret = clk_bulk_prepare_enable(ARRAY_SIZE(dev->clks), dev->clks); + if (ret) { + dev_err(dev->dev, "failed to enable pwmdac clocks\n"); + return ret; + } + + ret = reset_control_deassert(dev->rst_apb); + if (ret) { + dev_err(dev->dev, "failed to deassert pwmdac apb reset\n"); + goto err_rst_apb; + } + } else { + clk_bulk_disable_unprepare(ARRAY_SIZE(dev->clks), dev->clks); + } + + return 0; + +err_rst_apb: + clk_bulk_disable_unprepare(ARRAY_SIZE(dev->clks), dev->clks); + + return ret; +} + +static int jh7110_pwmdac_dai_probe(struct snd_soc_dai *dai) +{ + struct jh7110_pwmdac_dev *dev = dev_get_drvdata(dai->dev); + + dev->play_dma_data.addr = dev->mapbase + JH7110_PWMDAC_WDATA; + dev->play_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; + dev->play_dma_data.fifo_size = 1; + dev->play_dma_data.maxburst = 16; + + snd_soc_dai_init_dma_data(dai, &dev->play_dma_data, NULL); + snd_soc_dai_set_drvdata(dai, dev); + + return 0; +} + +#define JH7110_PWMDAC_ENUM_DECL(xname, xinfo, xget, xput) \ +{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ + .info = xinfo, .get = xget, .put = xput,} + +static const struct snd_kcontrol_new jh7110_pwmdac_snd_controls[] = { + JH7110_PWMDAC_ENUM_DECL("shift", jh7110_pwmdac_shift_info, + jh7110_pwmdac_shift_get, + jh7110_pwmdac_shift_put), + JH7110_PWMDAC_ENUM_DECL("duty_cycle", jh7110_pwmdac_duty_cycle_info, + jh7110_pwmdac_duty_cycle_get, + jh7110_pwmdac_duty_cycle_put), + JH7110_PWMDAC_ENUM_DECL("data_change", jh7110_pwmdac_data_change_info, + jh7110_pwmdac_data_change_get, + jh7110_pwmdac_data_change_put), + JH7110_PWMDAC_ENUM_DECL("data_mode", jh7110_pwmdac_data_mode_info, + jh7110_pwmdac_data_mode_get, + jh7110_pwmdac_data_mode_put), + JH7110_PWMDAC_ENUM_DECL("data_shift", jh7110_pwmdac_data_shift_info, + jh7110_pwmdac_data_shift_get, + jh7110_pwmdac_data_shift_put), +}; + +static int jh7110_pwmdac_component_probe(struct snd_soc_component *component) +{ + snd_soc_add_component_controls(component, jh7110_pwmdac_snd_controls, + ARRAY_SIZE(jh7110_pwmdac_snd_controls)); + return 0; +} + +static const struct snd_soc_dai_ops jh7110_pwmdac_dai_ops = { + .startup = jh7110_pwmdac_startup, + .hw_params = jh7110_pwmdac_hw_params, + .trigger = jh7110_pwmdac_trigger, +}; + +static const struct snd_soc_component_driver jh7110_pwmdac_component = { + .name = "jh7110-pwmdac", + .probe = jh7110_pwmdac_component_probe, +}; + +static struct snd_soc_dai_driver jh7110_pwmdac_dai = { + .name = "jh7110-pwmdac", + .id = 0, + .probe = jh7110_pwmdac_dai_probe, + .playback = { + .channels_min = 1, + .channels_max = 2, + .rates = SNDRV_PCM_RATE_8000_48000, + .formats = SNDRV_PCM_FMTBIT_S16_LE, + }, + .ops = &jh7110_pwmdac_dai_ops, +}; + +static int jh7110_pwmdac_runtime_suspend(struct device *dev) +{ + struct jh7110_pwmdac_dev *pwmdac = dev_get_drvdata(dev); + + return jh7110_pwmdac_crg_enable(pwmdac, false); +} + +static int jh7110_pwmdac_runtime_resume(struct device *dev) +{ + struct jh7110_pwmdac_dev *pwmdac = dev_get_drvdata(dev); + + return jh7110_pwmdac_crg_enable(pwmdac, true); +} + +static int jh7110_pwmdac_system_suspend(struct device *dev) +{ + struct jh7110_pwmdac_dev *pwmdac = dev_get_drvdata(dev); + + /* save the CTRL register value */ + pwmdac->saved_ctrl = jh7110_pwmdac_read_reg(pwmdac->base, + JH7110_PWMDAC_CTRL); + return pm_runtime_force_suspend(dev); +} + +static int jh7110_pwmdac_system_resume(struct device *dev) +{ + struct jh7110_pwmdac_dev *pwmdac = dev_get_drvdata(dev); + int ret; + + ret = pm_runtime_force_resume(dev); + if (ret) + return ret; + + /* restore the CTRL register value */ + jh7110_pwmdac_write_reg(pwmdac->base, JH7110_PWMDAC_CTRL, + pwmdac->saved_ctrl); + return 0; +} + +static const struct dev_pm_ops jh7110_pwmdac_pm_ops = { + RUNTIME_PM_OPS(jh7110_pwmdac_runtime_suspend, + jh7110_pwmdac_runtime_resume, NULL) + SYSTEM_SLEEP_PM_OPS(jh7110_pwmdac_system_suspend, + jh7110_pwmdac_system_resume) +}; + +static int jh7110_pwmdac_probe(struct platform_device *pdev) +{ + struct jh7110_pwmdac_dev *dev; + struct resource *res; + int ret; + + dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL); + if (!dev) + return -ENOMEM; + + dev->base = devm_platform_get_and_ioremap_resource(pdev, 0, &res); + if (IS_ERR(dev->base)) + return PTR_ERR(dev->base); + + dev->mapbase = res->start; + + dev->clks[0].id = "apb"; + dev->clks[1].id = "core"; + + ret = devm_clk_bulk_get(&pdev->dev, ARRAY_SIZE(dev->clks), dev->clks); + if (ret) { + dev_err(&pdev->dev, "failed to get pwmdac clocks\n"); + return ret; + } + + dev->rst_apb = devm_reset_control_get_exclusive(&pdev->dev, NULL); + if (IS_ERR(dev->rst_apb)) { + dev_err(&pdev->dev, "failed to get pwmdac apb reset\n"); + return PTR_ERR(dev->rst_apb); + } + + dev->dev = &pdev->dev; + dev->shift = PWMDAC_SHIFT_8; + dev->duty_cycle = PWMDAC_CYCLE_CENTER; + dev->cnt_n = PWMDAC_SAMPLE_CNT_1; + dev->data_change = NO_CHANGE; + dev->data_mode = INVERTER_DATA_MSB; + dev->data_shift = PWMDAC_DATA_LEFT_SHIFT_BIT_0; + + dev_set_drvdata(&pdev->dev, dev); + ret = devm_snd_soc_register_component(&pdev->dev, + &jh7110_pwmdac_component, + &jh7110_pwmdac_dai, 1); + if (ret) { + dev_err(&pdev->dev, "failed to register dai\n"); + return ret; + } + + ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0); + if (ret) { + dev_err(&pdev->dev, "failed to register pcm\n"); + return ret; + } + + pm_runtime_enable(dev->dev); + if (!pm_runtime_enabled(&pdev->dev)) { + ret = jh7110_pwmdac_runtime_resume(&pdev->dev); + if (ret) + goto err_pm_disable; + } + + return 0; + +err_pm_disable: + pm_runtime_disable(&pdev->dev); + + return ret; +} + +static int jh7110_pwmdac_remove(struct platform_device *pdev) +{ + pm_runtime_disable(&pdev->dev); + return 0; +} + +static const struct of_device_id jh7110_pwmdac_of_match[] = { + { .compatible = "starfive,jh7110-pwmdac" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, jh7110_pwmdac_of_match); + +static struct platform_driver jh7110_pwmdac_driver = { + .driver = { + .name = "jh7110-pwmdac", + .of_match_table = jh7110_pwmdac_of_match, + .pm = pm_ptr(&jh7110_pwmdac_pm_ops), + }, + .probe = jh7110_pwmdac_probe, + .remove = jh7110_pwmdac_remove, +}; +module_platform_driver(jh7110_pwmdac_driver); + +MODULE_AUTHOR("Jenny Zhang"); +MODULE_AUTHOR("Curry Zhang"); +MODULE_AUTHOR("Xingyu Wu xingyu.wu@starfivetech.com"); +MODULE_AUTHOR("Hal Feng hal.feng@starfivetech.com"); +MODULE_DESCRIPTION("StarFive JH7110 PWM-DAC driver"); +MODULE_LICENSE("GPL");

Add PWM-DAC support for StarFive JH7110 SoC.

Signed-off-by: Hal Feng hal.feng@starfivetech.com --- .../jh7110-starfive-visionfive-2.dtsi | 50 +++++++++++++++++++ arch/riscv/boot/dts/starfive/jh7110.dtsi | 13 +++++ 2 files changed, 63 insertions(+)

diff --git a/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi b/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi index 19b5954ee72d..5ca66a65e722 100644 --- a/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi +++ b/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi @@ -36,6 +36,34 @@ gpio-restart { gpios = <&sysgpio 35 GPIO_ACTIVE_HIGH>; priority = <224>; }; + + pwmdac_dit: pwmdac-dit { + compatible = "starfive,jh7110-pwmdac-dit"; + #sound-dai-cells = <0>; + }; + + sound { + compatible = "simple-audio-card"; + simple-audio-card,name = "StarFive-PWMDAC-Sound-Card"; + #address-cells = <1>; + #size-cells = <0>; + + simple-audio-card,dai-link@0 { + reg = <0>; + format = "left_j"; + bitclock-master = <&sndcpu0>; + frame-master = <&sndcpu0>; + status = "okay"; + + sndcpu0: cpu { + sound-dai = <&pwmdac>; + }; + + codec { + sound-dai = <&pwmdac_dit>; + }; + }; + }; };

&dvp_clk { @@ -191,6 +219,22 @@ GPOEN_SYS_I2C6_DATA, }; };

+ pwmdac_pins: pwmdac-0 { + pwmdac-pins { + pinmux = <GPIOMUX(33, GPOUT_SYS_PWMDAC_LEFT, + GPOEN_ENABLE, + GPI_NONE)>, + <GPIOMUX(34, GPOUT_SYS_PWMDAC_RIGHT, + GPOEN_ENABLE, + GPI_NONE)>; + bias-disable; + drive-strength = <2>; + input-disable; + input-schmitt-disable; + slew-rate = <0>; + }; + }; + uart0_pins: uart0-0 { tx-pins { pinmux = <GPIOMUX(5, GPOUT_SYS_UART0_TX, @@ -250,6 +294,12 @@ GPOEN_DISABLE, }; };

+&pwmdac { + pinctrl-names = "default"; + pinctrl-0 = <&pwmdac_pins>; + status = "okay"; +}; + &uart0 { pinctrl-names = "default"; pinctrl-0 = <&uart0_pins>; diff --git a/arch/riscv/boot/dts/starfive/jh7110.dtsi b/arch/riscv/boot/dts/starfive/jh7110.dtsi index cfda6fb0d91b..bbb3f65e6f80 100644 --- a/arch/riscv/boot/dts/starfive/jh7110.dtsi +++ b/arch/riscv/boot/dts/starfive/jh7110.dtsi @@ -387,6 +387,19 @@ tdm: tdm@10090000 { status = "disabled"; };

+ pwmdac: pwmdac@100b0000 { + compatible = "starfive,jh7110-pwmdac"; + reg = <0x0 0x100b0000 0x0 0x1000>; + clocks = <&syscrg JH7110_SYSCLK_PWMDAC_APB>, + <&syscrg JH7110_SYSCLK_PWMDAC_CORE>; + clock-names = "apb", "core"; + resets = <&syscrg JH7110_SYSRST_PWMDAC_APB>; + dmas = <&dma 22>; + dma-names = "tx"; + #sound-dai-cells = <0>; + status = "disabled"; + }; + stgcrg: clock-controller@10230000 { compatible = "starfive,jh7110-stgcrg"; reg = <0x0 0x10230000 0x0 0x10000>;