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Some laptops without _DSD have the SPI speed set very low in the BIOS. Since the SPI controller uses this speed as its max speed, the SPI transactions are very slow. Firmware download writes to many registers, and if the SPI speed is too slow, it can take a long time to download. For this reason, disable firmware loading if the maximum SPI speed is too low. Without Firmware, audio playback will work, but the volume will be low to ensure safe operation of the CS35L41. Signed-off-by: Stefan Binding <sbinding@opensource.cirrus.com> Cc: <stable@vger.kernel.org> # v6.7+ Link: https://lore.kernel.org/r/20231221132518.3213-3-sbinding@opensource.cirrus.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
103 lines
2.1 KiB
C
103 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0
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*
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* CS35L41 ALSA HDA audio driver
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*
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* Copyright 2021 Cirrus Logic, Inc.
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*
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* Author: Lucas Tanure <tanureal@opensource.cirrus.com>
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*/
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#ifndef __CS35L41_HDA_H__
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#define __CS35L41_HDA_H__
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#include <linux/acpi.h>
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#include <linux/efi.h>
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#include <linux/regulator/consumer.h>
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#include <linux/gpio/consumer.h>
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#include <linux/device.h>
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#include <sound/cs35l41.h>
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#include <linux/firmware/cirrus/cs_dsp.h>
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#include <linux/firmware/cirrus/wmfw.h>
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#define CS35L41_MAX_ACCEPTABLE_SPI_SPEED_HZ 1000000
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struct cs35l41_amp_cal_data {
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u32 calTarget[2];
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u32 calTime[2];
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s8 calAmbient;
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u8 calStatus;
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u16 calR;
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} __packed;
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struct cs35l41_amp_efi_data {
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u32 size;
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u32 count;
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struct cs35l41_amp_cal_data data[];
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} __packed;
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enum cs35l41_hda_spk_pos {
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CS35L41_LEFT,
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CS35L41_RIGHT,
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};
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enum cs35l41_hda_gpio_function {
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CS35L41_NOT_USED,
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CS35l41_VSPK_SWITCH,
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CS35L41_INTERRUPT,
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CS35l41_SYNC,
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};
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enum control_bus {
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I2C,
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SPI
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};
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struct cs35l41_hda {
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struct device *dev;
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struct regmap *regmap;
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struct gpio_desc *reset_gpio;
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struct gpio_desc *cs_gpio;
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struct cs35l41_hw_cfg hw_cfg;
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struct hda_codec *codec;
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int irq;
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int index;
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int channel_index;
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unsigned volatile long irq_errors;
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const char *amp_name;
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const char *acpi_subsystem_id;
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int firmware_type;
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int speaker_id;
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struct mutex fw_mutex;
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struct work_struct fw_load_work;
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struct regmap_irq_chip_data *irq_data;
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bool firmware_running;
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bool request_fw_load;
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bool fw_request_ongoing;
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bool halo_initialized;
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bool playback_started;
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struct cs_dsp cs_dsp;
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struct acpi_device *dacpi;
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bool mute_override;
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enum control_bus control_bus;
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bool bypass_fw;
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};
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enum halo_state {
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HALO_STATE_CODE_INIT_DOWNLOAD = 0,
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HALO_STATE_CODE_START,
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HALO_STATE_CODE_RUN
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};
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extern const struct dev_pm_ops cs35l41_hda_pm_ops;
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int cs35l41_hda_probe(struct device *dev, const char *device_name, int id, int irq,
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struct regmap *regmap, enum control_bus control_bus);
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void cs35l41_hda_remove(struct device *dev);
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int cs35l41_get_speaker_id(struct device *dev, int amp_index, int num_amps, int fixed_gpio_id);
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#endif /*__CS35L41_HDA_H__*/
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