diff options
Diffstat (limited to 'src/drivers/soundwire/cs42l42')
| -rw-r--r-- | src/drivers/soundwire/cs42l42/Kconfig | 6 | ||||
| -rw-r--r-- | src/drivers/soundwire/cs42l42/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/drivers/soundwire/cs42l42/chip.h | 116 | ||||
| -rw-r--r-- | src/drivers/soundwire/cs42l42/cs42l42.c | 231 |
4 files changed, 354 insertions, 0 deletions
diff --git a/src/drivers/soundwire/cs42l42/Kconfig b/src/drivers/soundwire/cs42l42/Kconfig new file mode 100644 index 0000000000..c980a3eeef --- /dev/null +++ b/src/drivers/soundwire/cs42l42/Kconfig @@ -0,0 +1,6 @@ +config DRIVERS_SOUNDWIRE_CS42L42 + bool + depends on HAVE_ACPI_TABLES + default n + help + SoundWire CS42L42 audio codec SSDT generator. diff --git a/src/drivers/soundwire/cs42l42/Makefile.inc b/src/drivers/soundwire/cs42l42/Makefile.inc new file mode 100644 index 0000000000..b2475b89d4 --- /dev/null +++ b/src/drivers/soundwire/cs42l42/Makefile.inc @@ -0,0 +1 @@ +ramstage-$(CONFIG_DRIVERS_SOUNDWIRE_CS42L42) += cs42l42.c diff --git a/src/drivers/soundwire/cs42l42/chip.h b/src/drivers/soundwire/cs42l42/chip.h new file mode 100644 index 0000000000..c4fc62c496 --- /dev/null +++ b/src/drivers/soundwire/cs42l42/chip.h @@ -0,0 +1,116 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef __DRIVERS_SOUNDWIRE_CS42L42_CHIP_H__ +#define __DRIVERS_SOUNDWIRE_CS42L42_CHIP_H__ + +#include <acpi/acpi.h> +#include<acpi/acpi_device.h> + +enum cs42l42_ts_dbnc_rise { + RISE_DEB_0_MS = 0, + RISE_DEB_125_MS = 1, + RISE_DEB_250_MS = 2, + RISE_DEB_500_MS = 3, + RISE_DEB_750_MS = 4, + RISE_DEB_1000_MS = 5, + RISE_DEB_1250_MS = 6, + RISE_DEB_1500_MS = 7, +}; +enum cs42l42_ts_dbnc_fall { + FALL_DEB_0_MS = 0, + FALL_DEB_125_MS = 1, + FALL_DEB_250_MS = 2, + FALL_DEB_500_MS = 3, + FALL_DEB_750_MS = 4, + FALL_DEB_1000_MS = 5, + FALL_DEB_1250_MS = 6, + FALL_DEB_1500_MS = 7, +}; +enum cs42l42_hs_bias_ramp_rate { + HSBIAS_RAMP_FAST_RISE_SLOW_FALL = 0, + HSBIAS_RAMP_FAST = 1, + HSBIAS_RAMP_SLOW = 2, + HSBIAS_RAMP_SLOWEST = 3, +}; + +struct drivers_soundwire_cs42l42_config { + char acpi_name[ACPI_NAME_BUFFER_SIZE]; /* Set by the acpi_name ops */ + const char *desc; + + /* Interrupt configuration */ + struct acpi_irq irq; + /* Use GPIO based interrupt instead of PIRQ */ + struct acpi_gpio irq_gpio; + /* Use GPIO based reset gpio */ + struct acpi_gpio reset_gpio; + /* Define cs42L42 parameters */ + /* + * cirrus,ts-inv : Boolean property. For jacks that invert the tip sense + * polarity. Normal jacks will short tip sense pin to HS1 when headphones are + * plugged in and leave tip sense floating when not plugged in. Inverting jacks + * short tip sense when unplugged and float when plugged in. + * false = Non-inverted + * true = Inverted + * Default = Non-inverted + */ + bool ts_inv; + /* + * cirrus,ts-dbnc-rise : Debounce the rising edge of TIP_SENSE_PLUG. With no + * debounce, the tip sense pin might be noisy on a plug event. + * Default = RISE_DEB_1000_MS + */ + enum cs42l42_ts_dbnc_rise ts_dbnc_rise; + /* + * cirrus,ts-dbnc-fall : Debounce the falling edge of TIP_SENSE_UNPLUG. + * With no debounce, the tip sense pin might be noisy on an unplug event. + * Default = FALL_DEB_1000_MS + */ + enum cs42l42_ts_dbnc_fall ts_dbnc_fall; + /* + * cirrus,btn-det-init-dbnce : This sets how long the driver sleeps after + * enabling button detection interrupts. After auto-detection and before + * servicing button interrupts, the HS bias needs time to settle. If you + * don't wait, there is possibility for erroneous button interrupt. + * Value in ms, 0 - 200. + * Default = 100ms + */ + unsigned int btn_det_init_dbnce; + /* + * cirrus,btn-det-event-dbnce : This sets how long the driver delays after + * receiving a button press interrupt. With level detect interrupts, you want + * to wait a small amount of time to make sure the button press is making a + * clean connection with the bias resistors. + * Value in ms, 0 - 20. + * Default = 10ms + */ + unsigned int btn_det_event_dbnce; + /* + * cirrus,bias-lvls : For a level-detect headset button scheme, each button + * will bias the mic pin to a certain voltage. To determine which button was + * pressed, the driver will compare this biased voltage to sequential, + * decreasing voltages and will stop when a comparator is tripped, + * indicating a comparator voltage < bias voltage. This value represents a + * percentage of the internally generated HS bias voltage. For different + * hardware setups, a designer might want to tweak this. This is an array of + * descending values for the comparator voltage. + * Array of 4 values + * Each 0-63 + * < x1 x2 x3 x4 > + * Default = < 15 8 4 1> + */ + uint64_t bias_lvls[4]; + /* headset bias ramp rate */ + enum cs42l42_hs_bias_ramp_rate hs_bias_ramp_rate; + /* + * cirrus,hs-bias-sense-disable: This is boolean property. If present the + * HSBIAS sense is disabled. Configures HSBIAS output current sense through + * the external 2.21-k resistor. HSBIAS_SENSE is hardware feature to reduce + * the potential pop noise during the headset plug out slowly. But on some + * platforms ESD voltage will affect it causing test to fail, especially + * with CTIA headset type. For different hardware setups, a designer might + * want to tweak default behavior. + */ + bool hs_bias_sense_disable; +}; + +#endif /* __DRIVERS_SOUNDWIRE_CS42L42_CHIP_H__ */ diff --git a/src/drivers/soundwire/cs42l42/cs42l42.c b/src/drivers/soundwire/cs42l42/cs42l42.c new file mode 100644 index 0000000000..111844c171 --- /dev/null +++ b/src/drivers/soundwire/cs42l42/cs42l42.c @@ -0,0 +1,231 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <acpi/acpigen.h> +#include <acpi/acpi_device.h> +#include <acpi/acpi_soundwire.h> +#include <device/device.h> +#include <device/path.h> +#include <device/soundwire.h> +#include <mipi/ids.h> +#include <stdio.h> + +#include "chip.h" + +static struct soundwire_address cs42l42_address = { + .version = SOUNDWIRE_VERSION_1_0, + .manufacturer_id = MIPI_MFG_ID_CIRRUS, + .part_id = MIPI_DEV_ID_CIRRUS_CS42L42, + .class = MIPI_CLASS_NONE +}; + +static struct soundwire_slave cs42l42_slave = { + .wake_up_unavailable = false, + .test_mode_supported = false, + .clock_stop_mode1_supported = true, + .simplified_clockstopprepare_sm_supported = false, + .clockstopprepare_hard_reset_behavior = true, + .highPHY_capable = false, + .paging_supported = true, + .bank_delay_supported = true, + .port15_read_behavior = false, + .source_port_list = SOUNDWIRE_PORT(1), + .sink_port_list = SOUNDWIRE_PORT(2) | SOUNDWIRE_PORT(3) +}; + +static struct soundwire_bra_mode cs42l42_dp0_bra_mode = { + .bus_frequency_configs_count = 6, + .bus_frequency_configs = { + 11289600, /* 11.2896 MHz */ + 12000 * KHz, /* 12 MHz */ + 12288 * KHz, /* 12.288 MHz */ + 22579200, /* 22.5792 MHz */ + 24000 * KHz, /* 24 MHz */ + 24576 * KHz, /* 24.576 MHz */ + }, + .max_data_per_frame = 4096, /* MaxRow*MaxCol = 256*16 = 4096 */ + .min_us_between_transactions = 0 +}; + +static struct soundwire_dp0 cs42l42_dp0 = { + .port_max_wordlength = 64, + .port_min_wordlength = 1, + .bra_imp_def_response_supported = false, + .simplified_channel_prepare_sm = true, + .imp_def_dp0_interrupts_supported = 0, + .imp_def_bpt_supported = true, + .bra_mode_count = 1, + .bra_mode_list = { 0 } +}; + +static struct soundwire_audio_mode cs42l42_audio_mode = { + .bus_frequency_configs_count = 6, + .bus_frequency_configs = { + 11289600, /* 11.2896 MHz */ + 12000 * KHz, /* 12 MHz */ + 12288 * KHz, /* 12.288 MHz */ + 22579200, /* 22.5792 MHz */ + 24000 * KHz, /* 24 MHz */ + 24576 * KHz, /* 24.576 MHz */ + }, + /* Support 8 KHz to 192 KHz sampling frequency */ + .max_sampling_frequency = 192 * KHz, + .min_sampling_frequency = 8 * KHz, + .prepare_channel_behavior = CHANNEL_PREPARE_ANY_FREQUENCY +}; + +static struct soundwire_dpn cs42l42_dp1 = { + .port_max_wordlength = 64, + .port_min_wordlength = 1, + .data_port_type = FULL_DATA_PORT, + .max_grouping_supported = BLOCK_GROUP_COUNT_1, + .simplified_channelprepare_sm = false, + .imp_def_dpn_interrupts_supported = 0, + .min_channel_number = 1, + .max_channel_number = 1, + .modes_supported = MODE_ISOCHRONOUS | MODE_TX_CONTROLLED | + MODE_RX_CONTROLLED | MODE_FULL_ASYNCHRONOUS, + .block_packing_mode = true, + .port_audio_mode_count = 1, + .port_audio_mode_list = { 0 } +}; + +static struct soundwire_dpn cs42l42_dpn = { + .port_max_wordlength = 64, + .port_min_wordlength = 1, + .data_port_type = FULL_DATA_PORT, + .max_grouping_supported = BLOCK_GROUP_COUNT_1, + .simplified_channelprepare_sm = false, + .imp_def_dpn_interrupts_supported = 0, + .min_channel_number = 1, + .max_channel_number = 2, + .modes_supported = MODE_ISOCHRONOUS | MODE_TX_CONTROLLED | + MODE_RX_CONTROLLED | MODE_FULL_ASYNCHRONOUS, + .block_packing_mode = true, + .port_audio_mode_count = 1, + .port_audio_mode_list = { 0 } +}; + +static const struct soundwire_codec cs42l42_codec = { + .slave = &cs42l42_slave, + .dp0_bra_mode = { &cs42l42_dp0_bra_mode }, + .dp0 = &cs42l42_dp0, + .audio_mode = { &cs42l42_audio_mode }, + .dpn = { + { + .port = 1, + .source = &cs42l42_dp1, + }, + { + .port = 2, + .sink = &cs42l42_dpn, + }, + { + .port = 3, + .sink = &cs42l42_dpn, + } + } +}; + +static void soundwire_cs42l42_fill_ssdt(const struct device *dev) +{ + struct drivers_soundwire_cs42l42_config *config = dev->chip_info; + const char *scope = acpi_device_scope(dev); + const char *path = acpi_device_path(dev); + struct acpi_dp *dsd; + int gpio_index = 0; + + if (!scope) + return; + + acpigen_write_scope(scope); + acpigen_write_device(acpi_device_name(dev)); + + /* Set codec address IDs. */ + cs42l42_address.link_id = dev->path.generic.id; + cs42l42_address.unique_id = dev->path.generic.subid; + + acpigen_write_ADR_soundwire_device(&cs42l42_address); + acpigen_write_name_string("_DDN", config->desc ? : dev->chip_ops->name); + acpigen_write_STA(acpi_device_status(dev)); + + /* Resources */ + acpigen_write_name("_CRS"); + acpigen_write_resourcetemplate_header(); + + /* Use either Interrupt() or GpioInt() */ + if (config->irq_gpio.pin_count) + acpi_device_write_gpio(&config->irq_gpio); + else + acpi_device_write_interrupt(&config->irq); + + /* for cs42l42 reset gpio */ + if (config->reset_gpio.pin_count) + acpi_device_write_gpio(&config->reset_gpio); + + acpigen_write_resourcetemplate_footer(); + + dsd = acpi_dp_new_table("_DSD"); + + if (config->irq_gpio.pin_count) + acpi_dp_add_gpio(dsd, "irq-gpios", path, + gpio_index++, /* Index = 0 */ + 0, /* Pin = 0 (There is a single pin in the GPIO resource). */ + config->irq_gpio.active_low); + if (config->reset_gpio.pin_count) + acpi_dp_add_gpio(dsd, "reset-gpios", path, + gpio_index++, /* Index = 0 or 1 (if irq gpio is written). */ + 0, /* Pin = 0 (There is a single pin in the GPIO resource). */ + config->reset_gpio.active_low); + acpi_dp_add_integer(dsd, "cirrus,ts-inv", config->ts_inv ? 1 : 0); + acpi_dp_add_integer(dsd, "cirrus,ts-dbnc-rise", config->ts_dbnc_rise); + acpi_dp_add_integer(dsd, "cirrus,ts-dbnc-fall", config->ts_dbnc_fall); + acpi_dp_add_integer(dsd, "cirrus,btn-det-init-dbnce", config->btn_det_init_dbnce); + if (config->btn_det_init_dbnce > 200) { + printk(BIOS_ERR, "%s: Incorrect btn_det_init_dbnce(%d). Using default of 100ms\n", + __func__, config->btn_det_init_dbnce); + config->btn_det_init_dbnce = 100; + } + acpi_dp_add_integer(dsd, "cirrus,btn-det-event-dbnce", config->btn_det_event_dbnce); + if (config->btn_det_event_dbnce > 100) { + printk(BIOS_ERR, "%s: Incorrect btn_det_event_dbnce(%d). Using default of 10ms\n", + __func__, config->btn_det_event_dbnce); + config->btn_det_event_dbnce = 10; + } + acpi_dp_add_integer_array(dsd, "cirrus,bias-lvls", config->bias_lvls, 4); + acpi_dp_add_integer(dsd, "cirrus,hs-bias-ramp-rate", config->hs_bias_ramp_rate); + if (config->hs_bias_sense_disable) + acpi_dp_add_integer(dsd, "cirrus,hs-bias-sense-disable", 1); + + soundwire_gen_codec(dsd, &cs42l42_codec, NULL); + acpi_dp_write(dsd); + + acpigen_pop_len(); /* Device */ + acpigen_pop_len(); /* Scope */ +} + +static const char *soundwire_cs42l42_acpi_name(const struct device *dev) +{ + struct drivers_soundwire_cs42l42_config *config = dev->chip_info; + if (config->acpi_name[0] != 0) + return config->acpi_name; + snprintf(config->acpi_name, sizeof(config->acpi_name), "SW%1X%1X", + dev->path.generic.id, dev->path.generic.subid); + return config->acpi_name; +} + +static struct device_operations soundwire_cs42l42_ops = { + .read_resources = noop_read_resources, + .set_resources = noop_set_resources, + .acpi_name = soundwire_cs42l42_acpi_name, + .acpi_fill_ssdt = soundwire_cs42l42_fill_ssdt, +}; + +static void soundwire_cs42l42_enable(struct device *dev) +{ + dev->ops = &soundwire_cs42l42_ops; +} + +struct chip_operations drivers_soundwire_cs42l42_ops = { + CHIP_NAME("Cirrus Logic CS42L42 SoundWire Codec") + .enable_dev = soundwire_cs42l42_enable +}; |