Introduce support for Cirrus Logic device CS40L26: a boosted haptics driver with integrated DSP and waveform memory with advanced closed loop algorithms and LRA protection. Signed-off-by: Fred Treven <fred.treven@xxxxxxxxxx> --- MAINTAINERS | 2 + drivers/input/misc/Kconfig | 30 + drivers/input/misc/Makefile | 3 + drivers/input/misc/cs40l26-i2c.c | 76 ++ drivers/input/misc/cs40l26-spi.c | 77 ++ drivers/input/misc/cs40l26.c | 2385 ++++++++++++++++++++++++++++++++++++++ include/linux/input/cs40l26.h | 486 ++++++++ 7 files changed, 3059 insertions(+) create mode 100644 drivers/input/misc/cs40l26-i2c.c create mode 100644 drivers/input/misc/cs40l26-spi.c create mode 100644 drivers/input/misc/cs40l26.c create mode 100644 include/linux/input/cs40l26.h diff --git a/MAINTAINERS b/MAINTAINERS index d72ed4957b0b..d4e51e6634c9 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4935,6 +4935,8 @@ S: Supported W: https://github.com/CirrusLogic/linux-drivers/wiki T: git https://github.com/CirrusLogic/linux-drivers.git F: Documentation/devicetree/bindings/input/cirrus,cs40l26.yaml +F: drivers/input/misc/cs40l* +F: include/linux/input/cs40l* CIRRUS LOGIC LOCHNAGAR DRIVER M: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxx> diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig index 81a54a59e13c..88e585897ad7 100644 --- a/drivers/input/misc/Kconfig +++ b/drivers/input/misc/Kconfig @@ -140,6 +140,36 @@ config INPUT_BMA150 To compile this driver as a module, choose M here: the module will be called bma150. +config INPUT_CS40L26 + tristate "Cirrus Logic CS40L26 Haptic Amplifier support" + select CS_DSP + help + Say Y here to enable support for CS40L26 boosted haptic + amplifier. + + To compile the driver as a module choose M here: the module + will be called cs40l26_core. + +config INPUT_CS40L26_I2C + tristate "Support I2C bus connection" + depends on INPUT_CS40L26 && I2C + select REGMAP_I2C + help + Say Y if you have CS40L26 connected to an I2C bus. + + To compile the driver as a module choose M here: the + module will be called cs40l26_i2c. + +config INPUT_CS40L26_SPI + tristate "Support SPI bus connection" + depends on INPUT_CS40L26 && SPI + select REGMAP_SPI + help + Say Y if you have CS40L26 connected to a SPI bus. + + To compile the driver as a module choose M here: the + module will be called cs40l26_spi. + config INPUT_E3X0_BUTTON tristate "NI Ettus Research USRP E3xx Button support." default n diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile index 04296a4abe8e..97d2245fdd6a 100644 --- a/drivers/input/misc/Makefile +++ b/drivers/input/misc/Makefile @@ -28,6 +28,9 @@ obj-$(CONFIG_INPUT_CMA3000) += cma3000_d0x.o obj-$(CONFIG_INPUT_CMA3000_I2C) += cma3000_d0x_i2c.o obj-$(CONFIG_INPUT_COBALT_BTNS) += cobalt_btns.o obj-$(CONFIG_INPUT_CPCAP_PWRBUTTON) += cpcap-pwrbutton.o +obj-$(CONFIG_INPUT_CS40L26) += cs40l26.o +obj-$(CONFIG_INPUT_CS40L26_I2C) += cs40l26-i2c.o +obj-$(CONFIG_INPUT_CS40L26_SPI) += cs40l26-spi.o obj-$(CONFIG_INPUT_DA7280_HAPTICS) += da7280.o obj-$(CONFIG_INPUT_DA9052_ONKEY) += da9052_onkey.o obj-$(CONFIG_INPUT_DA9055_ONKEY) += da9055_onkey.o diff --git a/drivers/input/misc/cs40l26-i2c.c b/drivers/input/misc/cs40l26-i2c.c new file mode 100644 index 000000000000..7be2d7731895 --- /dev/null +++ b/drivers/input/misc/cs40l26-i2c.c @@ -0,0 +1,76 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * CS40L26 Boosted Haptic Driver with Integrated DSP and + * Waveform Memory with Advanced Closed Loop Algorithms and LRA protection + * + * Copyright 2023 Cirrus Logic, Inc. + * + * Author: Fred Treven <fred.treven@xxxxxxxxxx> + */ + +#include <linux/i2c.h> +#include <linux/input/cs40l26.h> + +static const struct i2c_device_id cs40l26_id_i2c[] = { + { "cs40l26a", 0 }, + { "cs40l26b", 1 }, + { "cs40l27a", 2 }, + { "cs40l27b", 3 }, + {} +}; +MODULE_DEVICE_TABLE(i2c, cs40l26_id_i2c); + +static const struct of_device_id cs40l26_of_match[CS40L26_NUM_DEVS + 1] = { + { .compatible = "cirrus,cs40l26a" }, + { .compatible = "cirrus,cs40l26b" }, + { .compatible = "cirrus,cs40l27a" }, + { .compatible = "cirrus,cs40l27b" }, + {} +}; +MODULE_DEVICE_TABLE(of, cs40l26_of_match); + +static int cs40l26_i2c_probe_new(struct i2c_client *client) +{ + struct device *dev = &client->dev; + struct cs40l26_private *cs40l26; + + cs40l26 = devm_kzalloc(dev, sizeof(struct cs40l26_private), GFP_KERNEL); + if (!cs40l26) + return -ENOMEM; + + i2c_set_clientdata(client, cs40l26); + + cs40l26->regmap = devm_regmap_init_i2c(client, &cs40l26_regmap); + if (IS_ERR(cs40l26->regmap)) + return dev_err_probe(dev, PTR_ERR(cs40l26->regmap), + "Failed to allocate register map\n"); + + cs40l26->dev = dev; + cs40l26->irq = client->irq; + + return cs40l26_probe(cs40l26); +} + +static void cs40l26_i2c_remove(struct i2c_client *client) +{ + struct cs40l26_private *cs40l26 = i2c_get_clientdata(client); + + cs40l26_remove(cs40l26); +} + +static struct i2c_driver cs40l26_i2c_driver = { + .driver = { + .name = "cs40l26", + .of_match_table = cs40l26_of_match, + .pm = pm_sleep_ptr(&cs40l26_pm_ops), + }, + .id_table = cs40l26_id_i2c, + .probe_new = cs40l26_i2c_probe_new, + .remove = cs40l26_i2c_remove, +}; + +module_i2c_driver(cs40l26_i2c_driver); + +MODULE_DESCRIPTION("CS40L26 I2C Driver"); +MODULE_AUTHOR("Fred Treven, Cirrus Logic Inc. <fred.treven@xxxxxxxxxx>"); +MODULE_LICENSE("GPL"); diff --git a/drivers/input/misc/cs40l26-spi.c b/drivers/input/misc/cs40l26-spi.c new file mode 100644 index 000000000000..c43f4b3a5ea2 --- /dev/null +++ b/drivers/input/misc/cs40l26-spi.c @@ -0,0 +1,77 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * CS40L26 Boosted Haptic Driver with Integrated DSP and + * Waveform Memory with Advanced Closed Loop Algorithms and LRA protection + * + * Copyright 2023 Cirrus Logic, Inc. + * + * Author: Fred Treven <fred.treven@xxxxxxxxxx> + */ + +#include <linux/spi/spi.h> +#include <linux/input/cs40l26.h> + +static const struct spi_device_id cs40l26_id_spi[] = { + { "cs40l26a", 0 }, + { "cs40l26b", 1 }, + { "cs40l27a", 2 }, + { "cs40l27b", 3 }, + {} +}; +MODULE_DEVICE_TABLE(spi, cs40l26_id_spi); + +static const struct of_device_id cs40l26_of_match[CS40L26_NUM_DEVS + 1] = { + { .compatible = "cirrus,cs40l26a" }, + { .compatible = "cirrus,cs40l26b" }, + { .compatible = "cirrus,cs40l27a" }, + { .compatible = "cirrus,cs40l27b" }, + {} +}; +MODULE_DEVICE_TABLE(of, cs40l26_of_match); + +static int cs40l26_spi_probe(struct spi_device *spi) +{ + struct device *dev = &spi->dev; + struct cs40l26_private *cs40l26; + + cs40l26 = devm_kzalloc(dev, sizeof(struct cs40l26_private), GFP_KERNEL); + if (!cs40l26) + return -ENOMEM; + + spi_set_drvdata(spi, cs40l26); + + cs40l26->regmap = devm_regmap_init_spi(spi, &cs40l26_regmap); + if (IS_ERR(cs40l26->regmap)) + return dev_err_probe(dev, PTR_ERR(cs40l26->regmap), + "Failed to allocate register map\n"); + + cs40l26->dev = dev; + cs40l26->irq = spi->irq; + + return cs40l26_probe(cs40l26); +} + +static void cs40l26_spi_remove(struct spi_device *spi) +{ + struct cs40l26_private *cs40l26 = spi_get_drvdata(spi); + + cs40l26_remove(cs40l26); +} + +static struct spi_driver cs40l26_spi_driver = { + .driver = { + .name = "cs40l26", + .of_match_table = cs40l26_of_match, + .pm = pm_sleep_ptr(&cs40l26_pm_ops), + }, + + .id_table = cs40l26_id_spi, + .probe = cs40l26_spi_probe, + .remove = cs40l26_spi_remove, +}; + +module_spi_driver(cs40l26_spi_driver); + +MODULE_DESCRIPTION("CS40L26 SPI Driver"); +MODULE_AUTHOR("Fred Treven, Cirrus Logic Inc. <fred.treven@xxxxxxxxxx>"); +MODULE_LICENSE("GPL"); diff --git a/drivers/input/misc/cs40l26.c b/drivers/input/misc/cs40l26.c new file mode 100644 index 000000000000..1959438dfe31 --- /dev/null +++ b/drivers/input/misc/cs40l26.c @@ -0,0 +1,2385 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * CS40L26 Boosted Haptic Driver with Integrated DSP and + * Waveform Memory with Advanced Closed Loop Algorithms and LRA protection + * + * Copyright 2023 Cirrus Logic, Inc. + * + * Author: Fred Treven <fred.treven@xxxxxxxxxx> + */ + +#include <linux/firmware.h> +#include <linux/gpio.h> +#include <linux/i2c.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/pm_runtime.h> +#include <linux/string.h> +#include <linux/firmware/cirrus/wmfw.h> +#include <linux/input/cs40l26.h> + +static bool cs40l26_readable_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case CS40L26_DEVID ... CS40L26_REVID: + case CS40L26_TEST_KEY_CTRL: + case CS40L26_GLOBAL_ENABLES: + case CS40L26_ERROR_RELEASE: + case CS40L26_PWRMGT_CTL ... CS40L26_PWRMGT_STS: + case CS40L26_REFCLK_INPUT: + case CS40L26_PLL_REFCLK_DETECT_0: + case CS40L26_VBST_CTL_1 ... CS40L26_BST_IPK_CTL: + case CS40L26_TEST_LBST: + case CS40L26_NGATE1_INPUT: + case CS40L26_DAC_MSM_CONFIG ... CS40L26_TST_DAC_MSM_CONFIG: + case CS40L26_IRQ1_STATUS: + case CS40L26_IRQ1_EINT_1 ... CS40L26_IRQ1_EINT_5: + case CS40L26_IRQ1_STS_1 ... CS40L26_IRQ1_STS_5: + case CS40L26_IRQ1_MASK_1 ... CS40L26_IRQ1_MASK_5: + case CS40L26_MIXER_NGATE_CH1_CFG: + case CS40L26_DSP_MBOX_1 ... CS40L26_DSP_VIRTUAL2_MBOX_8: + case CS40L26_OTP_MEM0 ... CS40L26_OTP_MEM31: + case CS40L26_DSP1_XMEM_PACKED_0 ... CS40L26_DSP1_XMEM_PACKED_6143: + case CS40L26_DSP1_XROM_PACKED_0 ... CS40L26_DSP1_XROM_PACKED_4604: + case CS40L26_DSP1_XMEM_UNPACKED32_0 ... CS40L26_DSP1_XROM_UNPACKED32_3070: + case CS40L26_DSP1_SYS_INFO_ID: + case CS40L26_DSP1_XMEM_UNPACKED24_0 ... CS40L26_DSP1_XMEM_UNPACKED24_8191: + case CS40L26_DSP1_XROM_UNPACKED24_0 ... CS40L26_DSP1_XROM_UNPACKED24_6141: + case CS40L26_DSP1_SCRATCH1: + case CS40L26_DSP1_SCRATCH2: + case CS40L26_DSP1_SCRATCH3: + case CS40L26_DSP1_SCRATCH4: + case CS40L26_DSP1_CCM_CORE_CONTROL: + case CS40L26_DSP1_YMEM_PACKED_0 ... CS40L26_DSP1_YMEM_PACKED_1532: + case CS40L26_DSP1_YMEM_UNPACKED32_0 ... CS40L26_DSP1_YMEM_UNPACKED32_1022: + case CS40L26_DSP1_YMEM_UNPACKED24_0 ... CS40L26_DSP1_YMEM_UNPACKED24_2045: + case CS40L26_DSP1_PMEM_0 ... CS40L26_DSP1_PMEM_5114: + case CS40L26_DSP1_PROM_0 ... CS40L26_DSP1_PROM_30714: + return true; + default: + return false; + } +} + +const struct regmap_config cs40l26_regmap = { + .reg_bits = 32, + .val_bits = 32, + .reg_stride = 4, + .reg_format_endian = REGMAP_ENDIAN_BIG, + .val_format_endian = REGMAP_ENDIAN_BIG, + .max_register = CS40L26_LASTREG, + .num_reg_defaults = 0, + .readable_reg = cs40l26_readable_reg, + .cache_type = REGCACHE_NONE, +}; +EXPORT_SYMBOL_GPL(cs40l26_regmap); + +static const struct cs_dsp_region cs40l26_dsp_regions[] = { + { + .type = WMFW_HALO_PM_PACKED, + .base = CS40L26_DSP1_PMEM_0, + }, + { + .type = WMFW_HALO_XM_PACKED, + .base = CS40L26_DSP1_XMEM_PACKED_0, + }, + { + .type = WMFW_HALO_YM_PACKED, + .base = CS40L26_DSP1_YMEM_PACKED_0, + }, + { + .type = WMFW_ADSP2_XM, + .base = CS40L26_DSP1_XMEM_UNPACKED24_0, + }, + { + .type = WMFW_ADSP2_YM, + .base = CS40L26_DSP1_YMEM_UNPACKED24_0, + }, +}; + +static int cs40l26_mailbox_write(struct cs40l26_private *cs40l26, u32 write_val) +{ + unsigned int ack; + int i, error; + + for (i = 0; i < CS40L26_DSP_TIMEOUT_COUNT; i++) { + regmap_write(cs40l26->regmap, CS40L26_DSP_VIRTUAL1_MBOX_1, write_val); + + error = regmap_read(cs40l26->regmap, CS40L26_DSP_VIRTUAL1_MBOX_1, &ack); + if (!error && !ack) + break; + + usleep_range(CS40L26_DSP_TIMEOUT_US, CS40L26_DSP_TIMEOUT_US + 100); + } + if (i == CS40L26_DSP_TIMEOUT_COUNT) { + if (!error) + error = -ETIMEDOUT; + + dev_err(cs40l26->dev, "Mailbox ack. failed with value 0x%X: %d", ack, error); + } + + return error; +} + +static int cs40l26_fw_ctl_write_raw(struct cs_dsp *dsp, const char * const name, + unsigned int algo_id, unsigned int off_words, + size_t len_bytes, u32 *buf) +{ + size_t len_words = len_bytes / sizeof(__be32); + struct cs_dsp_coeff_ctl *ctl; + int i, error; + __be32 *val; + + ctl = cs_dsp_get_ctl(dsp, name, WMFW_ADSP2_XM, algo_id); + if (IS_ERR_OR_NULL(ctl)) { + dev_err(dsp->dev, "Failed to find fw ctl %s\n", name); + return -ENOENT; + } + + val = kzalloc(len_bytes, GFP_KERNEL); + if (!val) + return -ENOMEM; + + for (i = 0; i < len_words; i++) + val[i] = cpu_to_be32(buf[i]); + + error = cs_dsp_coeff_write_ctrl(ctl, off_words, val, len_bytes); + if (error) + dev_err(dsp->dev, "Failed to write fw ctl %s: %d\n", name, error); + + kfree(val); + + return error; +} + +static inline int cs40l26_fw_ctl_write(struct cs_dsp *dsp, const char * const name, + unsigned int algo_id, u32 val) +{ + return cs40l26_fw_ctl_write_raw(dsp, name, algo_id, 0, sizeof(u32), &val); +} + +static int cs40l26_fw_ctl_read_raw(struct cs_dsp *dsp, const char * const name, + unsigned int algo_id, unsigned int off_words, + size_t len_bytes, u32 *buf) +{ + size_t len_words = len_bytes / sizeof(u32); + struct cs_dsp_coeff_ctl *ctl; + int i, error; + + ctl = cs_dsp_get_ctl(dsp, name, WMFW_ADSP2_XM, algo_id); + if (IS_ERR_OR_NULL(ctl)) { + dev_err(dsp->dev, "Failed to find fw ctl %s\n", name); + return -ENOENT; + } + + error = cs_dsp_coeff_read_ctrl(ctl, off_words, buf, len_bytes); + if (error) { + dev_err(dsp->dev, "Failed to read fw ctl %s: %d\n", name, error); + return error; + } + + for (i = 0; i < len_words; i++) + buf[i] = be32_to_cpu(buf[i]); + + return 0; +} + +static inline int cs40l26_fw_ctl_read(struct cs_dsp *dsp, const char * const name, + unsigned int algo_id, u32 *buf) +{ + return cs40l26_fw_ctl_read_raw(dsp, name, algo_id, 0, sizeof(u32), buf); +} + +static const struct cs40l26_pseq_params cs40l26_pseq_params_write_full = { + .num_op_words = CS40L26_PSEQ_OP_WRITE_FULL_WORDS, + .op_mask = CS40L26_PSEQ_WRITE_FULL_OP_MASK, + .low_addr_shift = CS40L26_PSEQ_WRITE_FULL_LOWER_ADDR_SHIFT, + .low_addr_mask = CS40L26_PSEQ_WRITE_FULL_LOWER_ADDR_MASK, + .low_data_mask = CS40L26_PSEQ_WRITE_FULL_LOWER_DATA_MASK, + .up_addr_shift = CS40L26_PSEQ_WRITE_FULL_UPPER_ADDR_SHIFT, + .up_addr_mask = CS40L26_PSEQ_WRITE_FULL_UPPER_ADDR_MASK, + .up_data_mask = CS40L26_PSEQ_WRITE_FULL_UPPER_DATA_MASK, + .up_data_shift = CS40L26_PSEQ_WRITE_FULL_UPPER_DATA_SHIFT, +}; + +static const struct cs40l26_pseq_params cs40l26_pseq_params_write_x16 = { + .num_op_words = CS40L26_PSEQ_OP_WRITE_X16_WORDS, + .op_mask = CS40L26_PSEQ_WRITE_X16_OP_MASK, + .low_addr_shift = CS40L26_PSEQ_WRITE_X16_LOWER_ADDR_SHIFT, + .low_addr_mask = CS40L26_PSEQ_WRITE_X16_LOWER_ADDR_MASK, + .low_data_mask = 0, + .up_addr_shift = CS40L26_PSEQ_WRITE_X16_UPPER_ADDR_SHIFT, + .up_addr_mask = CS40L26_PSEQ_WRITE_X16_UPPER_ADDR_MASK, + .up_data_mask = CS40L26_PSEQ_WRITE_X16_UPPER_DATA_MASK, + .up_data_shift = CS40L26_PSEQ_WRITE_X16_UPPER_DATA_SHIFT, +}; + +static int cs40l26_pseq_find_end(struct cs40l26_private *cs40l26, struct cs40l26_pseq_op **op_end) +{ + struct cs40l26_pseq_op *op; + + list_for_each_entry(op, &cs40l26->pseq_op_head, list) { + if (op->operation == CS40L26_PSEQ_OP_END) + break; + } + + if (op->operation != CS40L26_PSEQ_OP_END) { + dev_err(cs40l26->dev, "Failed to find PSEQ list terminator\n"); + return -ENOENT; + } + + *op_end = op; + + return 0; +} + +static int cs40l26_pseq_write(struct cs40l26_private *cs40l26, u32 addr, + u32 data, bool update, u8 op_code) +{ + struct device *dev = cs40l26->dev; + bool is_new = true; + struct cs40l26_pseq_op *op, *op_new, *op_end; + const struct cs40l26_pseq_params *params; + int error; + + switch (op_code) { + case CS40L26_PSEQ_OP_WRITE_FULL: + params = &cs40l26_pseq_params_write_full; + break; + case CS40L26_PSEQ_OP_WRITE_L16: + case CS40L26_PSEQ_OP_WRITE_H16: + if (addr & CS40L26_PSEQ_INVALID_ADDR) { + dev_err(dev, "Invalid PSEQ address: 0x%08X\n", addr); + return -EINVAL; + } + + params = &cs40l26_pseq_params_write_x16; + break; + default: + dev_err(dev, "Invalid PSEQ OP code: 0x%02X\n", op_code); + return -EINVAL; + } + + op_new = devm_kzalloc(dev, sizeof(struct cs40l26_pseq_op), GFP_KERNEL); + if (!op_new) + return -ENOMEM; + + op_new->size = params->num_op_words; + op_new->operation = op_code; + op_new->words[0] = (op_code << CS40L26_PSEQ_OP_SHIFT); + op_new->words[0] |= (addr & params->up_addr_mask) >> params->up_addr_shift; + op_new->words[1] = (addr & params->low_addr_mask) << params->low_addr_shift; + op_new->words[1] |= (data & params->up_data_mask) >> params->up_data_shift; + if (op_code == CS40L26_PSEQ_OP_WRITE_FULL) + op_new->words[2] = data & params->low_data_mask; + + list_for_each_entry(op, &cs40l26->pseq_op_head, list) { + if (op->words[0] == op_new->words[0] && + (op->words[1] & params->op_mask) == + (op_new->words[1] & params->op_mask) && update) { + if (op->size != params->num_op_words) { + dev_err(dev, "Failed to replace PSEQ op.\n"); + error = -EINVAL; + goto op_new_free; + } + is_new = false; + break; + } + } + + error = cs40l26_pseq_find_end(cs40l26, &op_end); + if (error) + goto op_new_free; + + if (((CS40L26_PSEQ_MAX_WORDS * sizeof(u32)) - op_end->offset) < + (op_new->size * sizeof(u32))) { + dev_err(dev, "Not enough space in pseq to add op\n"); + error = -ENOMEM; + goto op_new_free; + } + + if (is_new) { + op_new->offset = op_end->offset; + op_end->offset += (op_new->size * sizeof(u32)); + } else { + op_new->offset = op->offset; + } + + error = cs40l26_fw_ctl_write_raw(&cs40l26->dsp, "POWER_ON_SEQUENCE", CS40L26_PM_ALGO_ID, + op_new->offset / sizeof(u32), op_new->size * sizeof(u32), + op_new->words); + if (error) + goto op_new_free; + + if (is_new) { + error = cs40l26_fw_ctl_write_raw(&cs40l26->dsp, "POWER_ON_SEQUENCE", + CS40L26_PM_ALGO_ID, op_end->offset / sizeof(u32), + op_end->size * sizeof(u32), op_end->words); + if (error) + goto op_new_free; + + list_add(&op_new->list, &cs40l26->pseq_op_head); + } else { + list_replace(&op->list, &op_new->list); + } + + return 0; + +op_new_free: + devm_kfree(dev, op_new); + + return error; +} + +static int cs40l26_pseq_multi_write(struct cs40l26_private *cs40l26, + const struct reg_sequence *reg_seq, int num_regs, bool update, u8 op_code) +{ + int error, i; + + for (i = 0; i < num_regs; i++) { + error = cs40l26_pseq_write(cs40l26, reg_seq[i].reg, + reg_seq[i].def, update, op_code); + if (error) + return error; + } + + return 0; +} + +static int cs40l26_update_reg_defaults_via_pseq(struct cs40l26_private *cs40l26) +{ + int error; + + error = cs40l26_pseq_write(cs40l26, CS40L26_NGATE1_INPUT, + CS40L26_DATA_SRC_DSP1TX4, true, + CS40L26_PSEQ_OP_WRITE_L16); + if (error) + return error; + + error = cs40l26_pseq_write(cs40l26, CS40L26_MIXER_NGATE_CH1_CFG, + CS40L26_MIXER_NGATE_CH1_CFG_DEFAULT, + true, CS40L26_PSEQ_OP_WRITE_FULL); + if (error) + return error; + + return cs40l26_pseq_write(cs40l26, CS40L26_TST_DAC_MSM_CONFIG, + CS40L26_TST_DAC_MSM_CFG_DFLT_CHG_VAL_H16, + true, CS40L26_PSEQ_OP_WRITE_H16); +} + +static int cs40l26_pseq_init(struct cs40l26_private *cs40l26) +{ + struct cs40l26_pseq_op *pseq_op; + int error, i, num_words; + u8 operation; + u32 *words; + + INIT_LIST_HEAD(&cs40l26->pseq_op_head); + + words = kcalloc(CS40L26_PSEQ_MAX_WORDS, sizeof(u32), GFP_KERNEL); + if (IS_ERR_OR_NULL(words)) + return -ENOMEM; + + error = cs40l26_fw_ctl_read_raw(&cs40l26->dsp, "POWER_ON_SEQUENCE", + CS40L26_PM_ALGO_ID, 0, + CS40L26_PSEQ_MAX_WORDS * sizeof(u32), words); + if (error) + goto err_free; + + for (i = 0; i < CS40L26_PSEQ_MAX_WORDS; i += num_words) { + operation = (words[i] & CS40L26_PSEQ_OP_MASK) >> CS40L26_PSEQ_OP_SHIFT; + + switch (operation) { + case CS40L26_PSEQ_OP_END: + num_words = CS40L26_PSEQ_OP_END_WORDS; + break; + case CS40L26_PSEQ_OP_WRITE_ADDR8: + case CS40L26_PSEQ_OP_WRITE_H16: + case CS40L26_PSEQ_OP_WRITE_L16: + num_words = CS40L26_PSEQ_OP_WRITE_X16_WORDS; + break; + case CS40L26_PSEQ_OP_WRITE_FULL: + num_words = CS40L26_PSEQ_OP_WRITE_FULL_WORDS; + break; + default: + dev_err(cs40l26->dev, "Invalid OP code 0x%02X\n", operation); + error = -EINVAL; + goto err_free; + } + + pseq_op = devm_kzalloc(cs40l26->dev, sizeof(struct cs40l26_pseq_op), GFP_KERNEL); + if (!pseq_op) { + error = -ENOMEM; + goto err_free; + } + + memcpy(pseq_op->words, &words[i], num_words * sizeof(u32)); + pseq_op->size = num_words; + pseq_op->offset = i * sizeof(u32); + pseq_op->operation = operation; + list_add(&pseq_op->list, &cs40l26->pseq_op_head); + + if (operation == CS40L26_PSEQ_OP_END) + break; + } + + if (operation != CS40L26_PSEQ_OP_END) { + dev_err(cs40l26->dev, "PSEQ_END_OF_SCRIPT not found\n"); + error = -ENOENT; + goto err_free; + } + + error = cs40l26_update_reg_defaults_via_pseq(cs40l26); + +err_free: + kfree(words); + + return error; +} + +static inline void cs40l26_pm_exit(struct device *dev) +{ + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); +} + +static inline int cs40l26_pm_enter(struct device *dev) +{ + return pm_runtime_resume_and_get(dev); +} + +static inline int cs40l26_pm_timeout_ms_set(struct cs40l26_private *cs40l26, + unsigned int dsp_state, u32 timeout_ms) +{ + return regmap_write(cs40l26->regmap, + (dsp_state == CS40L26_DSP_STATE_STANDBY) ? + CS40L26_A1_PM_STDBY_TICKS_STATIC_REG : + CS40L26_A1_PM_ACTIVE_TICKS_STATIC_REG, + timeout_ms * CS40L26_PM_TICKS_PER_MS); +} + +static inline int cs40l26_pm_timeout_ms_get(struct cs40l26_private *cs40l26, + unsigned int dsp_state, unsigned int *timeout_ms) +{ + unsigned int timeout_ticks; + int error; + + error = regmap_read(cs40l26->regmap, (dsp_state == CS40L26_DSP_STATE_STANDBY) ? + CS40L26_A1_PM_STDBY_TICKS_STATIC_REG : + CS40L26_A1_PM_ACTIVE_TICKS_STATIC_REG, &timeout_ticks); + if (error) + return error; + + *timeout_ms = timeout_ticks / CS40L26_PM_TICKS_PER_MS; + + return 0; +} + +static inline void cs40l26_pm_runtime_setup(struct cs40l26_private *cs40l26) +{ + pm_runtime_mark_last_busy(cs40l26->dev); + pm_runtime_use_autosuspend(cs40l26->dev); + pm_runtime_set_autosuspend_delay(cs40l26->dev, CS40L26_AUTOSUSPEND_DELAY_MS); + pm_runtime_enable(cs40l26->dev); +} + +static inline void cs40l26_pm_runtime_teardown(struct cs40l26_private *cs40l26) +{ + pm_runtime_disable(cs40l26->dev); + pm_runtime_dont_use_autosuspend(cs40l26->dev); +} + +static int cs40l26_irq_update_mask(struct cs40l26_private *cs40l26, u32 reg, u32 val, u32 bit_mask) +{ + unsigned int eint_reg, cur_mask, new_mask; + int error; + + if (reg == CS40L26_IRQ1_MASK_1) { + eint_reg = CS40L26_IRQ1_EINT_1; + } else if (reg == CS40L26_IRQ1_MASK_2) { + eint_reg = CS40L26_IRQ1_EINT_2; + } else { + dev_err(cs40l26->dev, "Invalid IRQ mask reg: 0x%08X\n", reg); + return -EINVAL; + } + + error = regmap_read(cs40l26->regmap, reg, &cur_mask); + if (error) + return error; + + new_mask = (cur_mask & ~bit_mask) | val; + + error = regmap_write(cs40l26->regmap, eint_reg, bit_mask); + if (error) + return error; + + error = regmap_write(cs40l26->regmap, reg, new_mask); + if (error) + return error; + + if (bit_mask & GENMASK(31, 16)) { + error = cs40l26_pseq_write(cs40l26, reg, (new_mask & GENMASK(31, 16)) >> 16, + true, CS40L26_PSEQ_OP_WRITE_H16); + if (error) { + dev_err(cs40l26->dev, "Failed to update IRQ mask H16"); + return error; + } + } + + if (bit_mask & GENMASK(15, 0)) { + error = cs40l26_pseq_write(cs40l26, reg, (new_mask & GENMASK(15, 0)), true, + CS40L26_PSEQ_OP_WRITE_L16); + if (error) { + dev_err(cs40l26->dev, "Failed to update IRQ mask L16"); + return error; + } + } + + return 0; +} + +static inline int cs40l26_gpio_timeout_ms_set(struct cs40l26_private *cs40l26, + unsigned int timeout_ms) +{ + return cs40l26_fw_ctl_write(&cs40l26->dsp, "TIMEOUT_GPI_MS", + CS40L26_VIBEGEN_ALGO_ID, timeout_ms); +} + +static int cs40l26_erase_gpio_mapping(struct cs40l26_private *cs40l26, + enum cs40l26_gpio_map mapping) +{ + unsigned int disable = CS40L26_EVENT_MAP_GPI_DISABLE; + int error; + + if (cs40l26->dsp.running) { + mutex_lock(&cs40l26->dsp.pwr_lock); + + error = cs40l26_fw_ctl_write_raw(&cs40l26->dsp, "ENT_MAP_TABLE_EVENT_DATA_PACKED", + CS40L26_EVENT_HANDLER_ALGO_ID, mapping, + sizeof(u32), &disable); + if (error) { + mutex_unlock(&cs40l26->dsp.pwr_lock); + return error; + } + + error = cs40l26_gpio_timeout_ms_set(cs40l26, 0); + + mutex_unlock(&cs40l26->dsp.pwr_lock); + } else { + error = regmap_write(cs40l26->regmap, CS40L26_A1_EVENT_MAP_1, disable); + } + + return error; +} + +static int cs40l26_gpio_config(struct cs40l26_private *cs40l26) +{ + unsigned int defaults[2], mask, val; + int error; + + defaults[0] = cs40l26->gpio_release_default; + defaults[1] = cs40l26->gpio_press_default; + + error = cs40l26_fw_ctl_write_raw(&cs40l26->dsp, "ENT_MAP_TABLE_EVENT_DATA_PACKED", + CS40L26_EVENT_HANDLER_ALGO_ID, 0, + 2 * sizeof(u32), defaults); + if (error) + return error; + + switch (cs40l26->devid) { + case CS40L26_DEVID_A: + case CS40L26_DEVID_L27_A: + val = (unsigned int)GENMASK(CS40L26_IRQ1_GPIO4_FALL, CS40L26_IRQ1_GPIO2_RISE); + break; + default: + val = 0; + } + + mask = (unsigned int)GENMASK(CS40L26_IRQ1_GPIO4_FALL, CS40L26_IRQ1_GPIO1_RISE); + + return cs40l26_irq_update_mask(cs40l26, CS40L26_IRQ1_MASK_1, val, mask); +} + +static int cs40l26_map_effect_to_gpio(struct cs40l26_private *cs40l26, struct ff_effect *effect, + struct cs40l26_uploaded_effect *ueffect) +{ + u16 button = effect->trigger.button; + u8 edge, ev_handler_bank_ram, gpio; + unsigned int offset, write_val; + int error; + + gpio = (button & CS40L26_BTN_NUM_MASK) >> CS40L26_BTN_NUM_SHIFT; + edge = (button & CS40L26_BTN_EDGE_MASK) >> CS40L26_BTN_EDGE_SHIFT; + + if (gpio != 1) { + dev_err(cs40l26->dev, "GPIO%u not supported on 0x%02X\n", gpio, cs40l26->revid); + return -EINVAL; + } + + ev_handler_bank_ram = (ueffect->wvfrm_bank == CS40L26_WVFRM_BANK_RAM || + ueffect->wvfrm_bank == CS40L26_WVFRM_BANK_BUZ) ? 1 : 0; + + offset = edge ? 0 : 1; + + write_val = (ueffect->trigger_index & CS40L26_BTN_INDEX_MASK) | + (ev_handler_bank_ram << CS40L26_BTN_BANK_SHIFT); + + mutex_lock(&cs40l26->dsp.pwr_lock); + + error = cs40l26_fw_ctl_write_raw(&cs40l26->dsp, "ENT_MAP_TABLE_EVENT_DATA_PACKED", + CS40L26_EVENT_HANDLER_ALGO_ID, offset, sizeof(u32), + &write_val); + if (error) + goto err_pwr_lock; + + error = cs40l26_gpio_timeout_ms_set(cs40l26, effect->replay.length); + +err_pwr_lock: + mutex_unlock(&cs40l26->dsp.pwr_lock); + if (error) + return error; + + ueffect->mapping = edge ? CS40L26_GPIO_MAP_A_PRESS : CS40L26_GPIO_MAP_A_RELEASE; + + return 0; +} + +static inline int cs40l26_num_waves_get(struct cs40l26_private *cs40l26, + u32 *num_waves) +{ + return cs40l26_fw_ctl_read(&cs40l26->dsp, "NUM_OF_WAVES", + CS40L26_VIBEGEN_ALGO_ID, num_waves); +} + +static struct cs40l26_uploaded_effect *cs40l26_uploaded_effect_find(struct cs40l26_private *cs40l26, + int id) +{ + struct cs40l26_uploaded_effect *ueffect; + + if (list_empty(&cs40l26->effect_head)) { + dev_dbg(cs40l26->dev, "Effect list is empty\n"); + return ERR_PTR(-ENODATA); + } + + list_for_each_entry(ueffect, &cs40l26->effect_head, list) { + if (ueffect->id == id) + return ueffect; + } + + return NULL; +} + +static struct cs40l26_buzzgen_config cs40l26_buzzgen_configs[] = { + { + .duration_name = "BUZZ_EFFECTS2_BUZZ_DURATION", + .freq_name = "BUZZ_EFFECTS2_BUZZ_FREQ", + .level_name = "BUZZ_EFFECTS2_BUZZ_LEVEL", + .effect_id = -1 + }, + { + .duration_name = "BUZZ_EFFECTS3_BUZZ_DURATION", + .freq_name = "BUZZ_EFFECTS3_BUZZ_FREQ", + .level_name = "BUZZ_EFFECTS3_BUZZ_LEVEL", + .effect_id = -1 + }, + { + .duration_name = "BUZZ_EFFECTS4_BUZZ_DURATION", + .freq_name = "BUZZ_EFFECTS4_BUZZ_FREQ", + .level_name = "BUZZ_EFFECTS4_BUZZ_LEVEL", + .effect_id = -1 + }, + { + .duration_name = "BUZZ_EFFECTS5_BUZZ_DURATION", + .freq_name = "BUZZ_EFFECTS5_BUZZ_FREQ", + .level_name = "BUZZ_EFFECTS5_BUZZ_LEVEL", + .effect_id = -1 + }, + { + .duration_name = "BUZZ_EFFECTS6_BUZZ_DURATION", + .freq_name = "BUZZ_EFFECTS6_BUZZ_FREQ", + .level_name = "BUZZ_EFFECTS6_BUZZ_LEVEL", + .effect_id = -1 + }, +}; + +static int cs40l26_buzzgen_find_slot(struct cs40l26_private *cs40l26, int id) +{ + int i, slot = -1; + + for (i = CS40L26_BUZZGEN_NUM_CONFIGS - 1; i >= 0; i--) { + if (cs40l26_buzzgen_configs[i].effect_id == id) { + slot = i; + break; + } else if (cs40l26_buzzgen_configs[i].effect_id == -1) { + slot = i; + } + } + + return slot; +} + +static int cs40l26_erase_buzzgen(struct cs40l26_private *cs40l26, int id) +{ + int slot = cs40l26_buzzgen_find_slot(cs40l26, id); + + if (slot == -1) { + dev_err(cs40l26->dev, "Failed to erase BUZZGEN config for id %d\n", id); + return -EINVAL; + } + + cs40l26_buzzgen_configs[slot].effect_id = -1; + + return 0; +} + +static int cs40l26_sine_upload(struct cs40l26_private *cs40l26, struct ff_effect *effect, + struct cs40l26_uploaded_effect *ueffect) +{ + unsigned int freq, level, duration; + int error, slot; + + slot = cs40l26_buzzgen_find_slot(cs40l26, effect->id); + if (slot == -1) { + dev_err(cs40l26->dev, "No free BUZZGEN slot available\n"); + return -ENOSPC; + } + + cs40l26_buzzgen_configs[slot].effect_id = effect->id; + + /* Divide by 4 to match firmware's formatting expectation */ + duration = (u32)(effect->replay.length / 4); + + if (effect->u.periodic.period < CS40L26_BUZZGEN_PERIOD_MS_MIN) + freq = 1000 / CS40L26_BUZZGEN_PERIOD_MS_MIN; + else if (effect->u.periodic.period > CS40L26_BUZZGEN_PERIOD_MS_MAX) + freq = 1000 / CS40L26_BUZZGEN_PERIOD_MS_MAX; + else + freq = 1000 / effect->u.periodic.period; + + if (effect->u.periodic.magnitude < CS40L26_BUZZGEN_LEVEL_MIN) + level = CS40L26_BUZZGEN_LEVEL_MIN; + else if (effect->u.periodic.magnitude > CS40L26_BUZZGEN_LEVEL_MAX) + level = CS40L26_BUZZGEN_LEVEL_MAX; + else + level = effect->u.periodic.magnitude; + + mutex_lock(&cs40l26->dsp.pwr_lock); + + error = cs40l26_fw_ctl_write(&cs40l26->dsp, cs40l26_buzzgen_configs[slot].duration_name, + CS40L26_BUZZGEN_ALGO_ID, duration); + if (error) + goto err_pwr_lock; + + error = cs40l26_fw_ctl_write(&cs40l26->dsp, cs40l26_buzzgen_configs[slot].freq_name, + CS40L26_BUZZGEN_ALGO_ID, freq); + if (error) + goto err_pwr_lock; + + error = cs40l26_fw_ctl_write(&cs40l26->dsp, cs40l26_buzzgen_configs[slot].level_name, + CS40L26_BUZZGEN_ALGO_ID, level); +err_pwr_lock: + mutex_unlock(&cs40l26->dsp.pwr_lock); + if (error) + return error; + + ueffect->id = effect->id; + ueffect->wvfrm_bank = CS40L26_WVFRM_BANK_BUZ; + /* + * BUZZGEN 1 is reserved for OTP buzz; BUZZGEN 2 - BUZZGEN 6 are valid. + * Add an offset of 1 for this reason. + */ + ueffect->trigger_index = CS40L26_BUZZGEN_INDEX_START + slot + 1; + + return 0; +} + +static int cs40l26_custom_upload(struct cs40l26_private *cs40l26, struct ff_effect *effect, + struct cs40l26_uploaded_effect *ueffect) +{ + struct device *dev = cs40l26->dev; + unsigned int nwaves, min_index, max_index, trigger_index; + u16 bank, index; + int error; + + mutex_lock(&cs40l26->dsp.pwr_lock); + error = cs40l26_num_waves_get(cs40l26, &nwaves); + mutex_unlock(&cs40l26->dsp.pwr_lock); + if (error) + return error; + + bank = (u16)(cs40l26->raw_custom_data[0] & 0xffffu); + index = (u16)(cs40l26->raw_custom_data[1] & 0xffffu); + + if (bank == CS40L26_WVFRM_BANK_RAM) { + if (nwaves == 0) { + dev_err(dev, "No waveforms in RAM\n"); + return -ENODATA; + } + + min_index = CS40L26_RAM_INDEX_START; + max_index = min_index + nwaves - 1; + } else if (bank == CS40L26_WVFRM_BANK_ROM) { + min_index = CS40L26_ROM_INDEX_START; + max_index = CS40L26_ROM_INDEX_END; + } else { + dev_err(dev, "Invalid custom waveform bank: %u\n", bank); + return -EINVAL; + } + + trigger_index = index + min_index; + if (trigger_index > max_index) { + dev_err(dev, "RAM index 0x%X out of bounds\n", trigger_index); + return -EINVAL; + } + dev_dbg(dev, "%s: Trigger Index = 0x%08X\n", __func__, trigger_index); + + ueffect->id = effect->id; + ueffect->wvfrm_bank = bank; + ueffect->trigger_index = trigger_index; + + return 0; +} + +static int cs40l26_uploaded_effect_add(struct cs40l26_private *cs40l26) +{ + struct ff_effect *effect = &cs40l26->upload_effect; + bool is_new = false; + struct cs40l26_uploaded_effect *ueffect; + int error; + + ueffect = cs40l26_uploaded_effect_find(cs40l26, cs40l26->upload_effect.id); + if (IS_ERR_OR_NULL(ueffect)) { + is_new = true; + ueffect = devm_kzalloc(cs40l26->dev, sizeof(struct cs40l26_uploaded_effect), + GFP_KERNEL); + if (IS_ERR_OR_NULL(ueffect)) + return -ENOMEM; + } + + if (effect->u.periodic.waveform == FF_CUSTOM) { + error = cs40l26_custom_upload(cs40l26, effect, ueffect); + } else if (effect->u.periodic.waveform == FF_SINE) { + error = cs40l26_sine_upload(cs40l26, effect, ueffect); + } else { + dev_err(cs40l26->dev, "Invalid periodic waveform type: 0x%X\n", + effect->u.periodic.waveform); + error = -EINVAL; + } + if (error) + goto err_free; + + if (effect->trigger.button) { + error = cs40l26_map_effect_to_gpio(cs40l26, effect, ueffect); + if (error) + goto err_free; + } else { + ueffect->mapping = CS40L26_GPIO_MAP_INVALID; + } + + if (is_new) + list_add(&ueffect->list, &cs40l26->effect_head); + + return 0; + +err_free: + if (is_new) + kfree(ueffect); + + return error; +} + +static void cs40l26_upload_worker(struct work_struct *work) +{ + struct cs40l26_private *cs40l26 = container_of(work, struct cs40l26_private, upload_work); + struct device *dev = cs40l26->dev; + + cs40l26->upload_error = cs40l26_pm_enter(dev); + if (cs40l26->upload_error) + return; + + mutex_lock(&cs40l26->lock); + + cs40l26->upload_error = cs40l26_uploaded_effect_add(cs40l26); + + mutex_unlock(&cs40l26->lock); + + cs40l26_pm_exit(dev); +} + +static void cs40l26_vibe_start_worker(struct work_struct *work) +{ + struct cs40l26_uploaded_effect *ueffect; + struct cs40l26_private *cs40l26; + struct ff_effect *effect; + unsigned int invert; + struct device *dev; + int error; + + cs40l26 = container_of(work, struct cs40l26_private, vibe_start_work); + dev = cs40l26->dev; + + error = cs40l26_pm_enter(dev); + if (error) + return; + + mutex_lock(&cs40l26->lock); + + effect = cs40l26->trigger_effect; + + ueffect = cs40l26_uploaded_effect_find(cs40l26, effect->id); + if (IS_ERR_OR_NULL(ueffect)) { + dev_err(dev, "No such effect (ID = %d)\n", effect->id); + goto err_mutex; + } + + mutex_lock(&cs40l26->dsp.pwr_lock); + + error = cs40l26_fw_ctl_write(&cs40l26->dsp, "TIMEOUT_MS", CS40L26_VIBEGEN_ALGO_ID, + effect->replay.length); + if (error) + goto err_pwr_lock; + + switch (effect->direction) { + case 0x0000: + invert = 0; + break; + case 0x8000: + invert = 1; + break; + default: + dev_err(dev, "Invalid direction 0x%X\n", effect->direction); + goto err_pwr_lock; + } + + error = cs40l26_fw_ctl_write(&cs40l26->dsp, "SOURCE_INVERT", CS40L26_EXT_ALGO_ID, invert); + if (error) + goto err_pwr_lock; + + error = cs40l26_mailbox_write(cs40l26, ueffect->trigger_index); + if (error) + goto err_pwr_lock; + + reinit_completion(&cs40l26->erase); + +err_pwr_lock: + mutex_unlock(&cs40l26->dsp.pwr_lock); +err_mutex: + mutex_unlock(&cs40l26->lock); + + cs40l26_pm_exit(dev); +} + +static void cs40l26_vibe_stop_worker(struct work_struct *work) +{ + struct cs40l26_private *cs40l26; + int error; + + cs40l26 = container_of(work, struct cs40l26_private, vibe_stop_work); + + error = cs40l26_pm_enter(cs40l26->dev); + if (error) + return; + + mutex_lock(&cs40l26->lock); + + error = cs40l26_mailbox_write(cs40l26, CS40L26_DSP_MBOX_CMD_STOP_PLAYBACK); + if (error) + dev_err(cs40l26->dev, "Failed to stop playback\n"); + + mutex_unlock(&cs40l26->lock); + cs40l26_pm_exit(cs40l26->dev); +} + +static void cs40l26_erase_worker(struct work_struct *work) +{ + struct cs40l26_uploaded_effect *ueffect; + struct cs40l26_private *cs40l26; + u16 duration, replay_len; + int id; + + cs40l26 = container_of(work, struct cs40l26_private, erase_work); + + cs40l26->erase_error = cs40l26_pm_enter(cs40l26->dev); + if (cs40l26->erase_error) + return; + + mutex_lock(&cs40l26->lock); + + id = cs40l26->erase_effect->id; + ueffect = cs40l26_uploaded_effect_find(cs40l26, id); + if (IS_ERR_OR_NULL(ueffect)) { + dev_err(cs40l26->dev, "Failed to erase nonexistent effect (%d)\n", id); + cs40l26->erase_error = PTR_ERR(ueffect); + goto err_mutex; + } + + /* Wait for any ongoing playback to stop */ + replay_len = cs40l26->erase_effect->replay.length; + duration = replay_len ? replay_len + 500 : CS40L26_VIBEGEN_MAX_TIME_MS; + + mutex_unlock(&cs40l26->lock); + + if (!wait_for_completion_timeout(&cs40l26->erase, msecs_to_jiffies(duration))) { + cs40l26->erase_error = -ETIME; + dev_err(cs40l26->dev, "Timed out waiting for playback stop\n"); + goto err_pm; + } + mutex_lock(&cs40l26->lock); + + if (ueffect->wvfrm_bank == CS40L26_WVFRM_BANK_BUZ) { + cs40l26->erase_error = cs40l26_erase_buzzgen(cs40l26, ueffect->id); + if (cs40l26->erase_error) + goto err_mutex; + } + + if (ueffect->mapping != CS40L26_GPIO_MAP_INVALID) { + cs40l26->erase_error = cs40l26_erase_gpio_mapping(cs40l26, ueffect->mapping); + if (cs40l26->erase_error) + goto err_mutex; + } + + list_del(&ueffect->list); + kfree(ueffect); + +err_mutex: + mutex_unlock(&cs40l26->lock); +err_pm: + cs40l26_pm_exit(cs40l26->dev); +} + +/* LUT for converting gain percentage to attenuation in dB */ +const u32 cs40l26_atten_lut_q21_2[CS40L26_NUM_ATTEN_LUT_VALUES] = { + 400, /* MUTE */ 160, /* 1% */ 136, 122, 112, 104, 98, 92, + 88, 84, 80, 77, 74, 71, 68, 66, 64, 62, 60, 58, 56, 54, 53, + 51, 50, 48, /* 25% */ 47, 45, 44, 43, 42, 41, 40, 39, 37, 36, + 35, 35, 34, 33, 32, 31, 30, 29, 29, 28, 27, 26, 26, 25, 24, /* 50 % */ + 23, 23, 22, 21, 21, 20, 20, 19, 18, 18, 17, 17, 16, 16, 15, 14, + 14, 13, 13, 12, 12, 11, 11, 10, 10, /* 75% */ 10, 9, 9, 8, 8, 7, + 7, 6, 6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 0, 0, /* 100% */ +}; + +static void cs40l26_set_gain_worker(struct work_struct *work) +{ + struct cs40l26_private *cs40l26 = container_of(work, struct cs40l26_private, set_gain_work); + + if (cs40l26_pm_enter(cs40l26->dev)) + return; + + mutex_lock(&cs40l26->lock); + mutex_lock(&cs40l26->dsp.pwr_lock); + + cs40l26_fw_ctl_write(&cs40l26->dsp, "SOURCE_ATTENUATION", CS40L26_EXT_ALGO_ID, + cs40l26_atten_lut_q21_2[cs40l26->gain_pct]); + + mutex_unlock(&cs40l26->dsp.pwr_lock); + mutex_unlock(&cs40l26->lock); + cs40l26_pm_exit(cs40l26->dev); +} + +static int cs40l26_upload_effect(struct input_dev *dev, struct ff_effect *effect, + struct ff_effect *old) +{ + struct cs40l26_private *cs40l26 = input_get_drvdata(dev); + u32 len = effect->u.periodic.custom_len; + int error; + + if (effect->type != FF_PERIODIC) { + dev_err(cs40l26->dev, "Effect type 0x%X not supported\n", effect->type); + return -EINVAL; + } + + memcpy(&cs40l26->upload_effect, effect, sizeof(struct ff_effect)); + + if (effect->u.periodic.waveform == FF_CUSTOM) { + cs40l26->raw_custom_data = kcalloc(len, sizeof(s16), GFP_KERNEL); + if (IS_ERR_OR_NULL(cs40l26->raw_custom_data)) + return -ENOMEM; + + if (copy_from_user(cs40l26->raw_custom_data, effect->u.periodic.custom_data, + sizeof(s16) * len)) { + dev_err(cs40l26->dev, "Failed to get user data\n"); + error = -EFAULT; + goto out_free; + } + } + + /* + * The no-sleep nature of Input FF callbacks requires usage of + * worker functions in order to properly utilize the PM runtime + * framework. + */ + queue_work(cs40l26->vibe_workqueue, &cs40l26->upload_work); + flush_work(&cs40l26->upload_work); + error = cs40l26->upload_error; + +out_free: + if (effect->u.periodic.waveform == FF_CUSTOM) + kfree(cs40l26->raw_custom_data); + cs40l26->raw_custom_data = NULL; + memset(&cs40l26->upload_effect, 0, sizeof(struct ff_effect)); + + return error; +} + +static int cs40l26_playback_effect(struct input_dev *dev, int effect_id, int val) +{ + struct cs40l26_private *cs40l26 = input_get_drvdata(dev); + + cs40l26->trigger_effect = &dev->ff->effects[effect_id]; + if (IS_ERR_OR_NULL(cs40l26->trigger_effect)) { + dev_err(cs40l26->dev, "No such effect (ID = %d)\n", effect_id); + return -ENOENT; + } + + if (val > 0) + queue_work(cs40l26->vibe_workqueue, &cs40l26->vibe_start_work); + else + queue_work(cs40l26->vibe_workqueue, &cs40l26->vibe_stop_work); + + return 0; +} + +static int cs40l26_erase_effect(struct input_dev *dev, int effect_id) +{ + struct cs40l26_private *cs40l26 = input_get_drvdata(dev); + struct ff_effect *effect; + + effect = &dev->ff->effects[effect_id]; + if (IS_ERR_OR_NULL(effect)) { + dev_err(cs40l26->dev, "Could not erase nonexistent effect\n"); + return -ENOENT; + } + + cs40l26->erase_effect = effect; + + queue_work(cs40l26->vibe_workqueue, &cs40l26->erase_work); + flush_work(&cs40l26->erase_work); + + return cs40l26->erase_error; +} + +static void cs40l26_set_gain(struct input_dev *dev, u16 gain) +{ + struct cs40l26_private *cs40l26 = input_get_drvdata(dev); + + if (gain >= CS40L26_NUM_ATTEN_LUT_VALUES) { + dev_err(cs40l26->dev, "Gain %u%% out of bounds\n", gain); + return; + } + + cs40l26->gain_pct = gain; + queue_work(cs40l26->vibe_workqueue, &cs40l26->set_gain_work); +} + +static int cs40l26_input_init(struct cs40l26_private *cs40l26) +{ + struct device *dev = cs40l26->dev; + int error; + + cs40l26->input = devm_input_allocate_device(dev); + if (!cs40l26->input) + return -ENOMEM; + + cs40l26->input->name = "cs40l26_input"; + cs40l26->input->id.product = cs40l26->devid; + cs40l26->input->id.version = cs40l26->revid; + + input_set_drvdata(cs40l26->input, cs40l26); + input_set_capability(cs40l26->input, EV_FF, FF_PERIODIC); + input_set_capability(cs40l26->input, EV_FF, FF_CUSTOM); + input_set_capability(cs40l26->input, EV_FF, FF_SINE); + input_set_capability(cs40l26->input, EV_FF, FF_GAIN); + + error = input_ff_create(cs40l26->input, FF_MAX_EFFECTS); + if (error) { + dev_err(dev, "Failed to create FF device: %d\n", error); + return error; + } + + /* + * input_ff_create() automatically sets FF_RUMBLE capabilities; + * we want to restrtict this to only FF_PERIODIC + */ + __clear_bit(FF_RUMBLE, cs40l26->input->ffbit); + + cs40l26->input->ff->upload = cs40l26_upload_effect; + cs40l26->input->ff->playback = cs40l26_playback_effect; + cs40l26->input->ff->erase = cs40l26_erase_effect; + cs40l26->input->ff->set_gain = cs40l26_set_gain; + + error = input_register_device(cs40l26->input); + if (error) { + dev_err(dev, "Cannot register input device: %d\n", error); + return error; + } + + INIT_LIST_HEAD(&cs40l26->effect_head); + + return error; +} + +static int cs40l26_bst_ipk_config(struct cs40l26_private *cs40l26) +{ + unsigned int bst_ipk; + int error; + + if (cs40l26->bst_ipk_ua < CS40L26_BST_IPK_UA_MIN || + cs40l26->bst_ipk_ua > CS40L26_BST_IPK_UA_MAX) + bst_ipk = CS40L26_BST_IPK_DEFAULT; + else + bst_ipk = (cs40l26->bst_ipk_ua / CS40L26_BST_IPK_UA_STEP) - 16; + + error = regmap_write(cs40l26->regmap, CS40L26_BST_IPK_CTL, bst_ipk); + if (error) + return error; + + error = cs40l26_pseq_write(cs40l26, CS40L26_BST_IPK_CTL, bst_ipk, + true, CS40L26_PSEQ_OP_WRITE_L16); + if (error) + return error; + + return cs40l26_irq_update_mask(cs40l26, CS40L26_IRQ1_MASK_1, 0, + BIT(CS40L26_IRQ1_BST_IPK_FLAG)); +} + +static int cs40l26_bst_ctl_config(struct cs40l26_private *cs40l26) +{ + unsigned int bst_ctl; + int error; + + if (cs40l26->vbst_uv < CS40L26_BST_UV_MIN || + cs40l26->vbst_uv > CS40L26_BST_UV_MAX) + bst_ctl = CS40L26_BST_DEFAULT; + else + bst_ctl = (cs40l26->vbst_uv - CS40L26_BST_UV_MIN) / CS40L26_BST_UV_STEP; + + error = regmap_write(cs40l26->regmap, CS40L26_VBST_CTL_1, bst_ctl); + if (error) + return error; + + return cs40l26_pseq_write(cs40l26, CS40L26_VBST_CTL_1, bst_ctl, + true, CS40L26_PSEQ_OP_WRITE_L16); +} + +static int cs40l26_wksrc_config(struct cs40l26_private *cs40l26) +{ + unsigned int mask, val; + + val = BIT(CS40L26_IRQ1_WKSRC_STS_GPIO2) | + BIT(CS40L26_IRQ1_WKSRC_STS_GPIO3) | + BIT(CS40L26_IRQ1_WKSRC_STS_GPIO4); + + mask = BIT(CS40L26_IRQ1_WKSRC_STS_ANY) | + BIT(CS40L26_IRQ1_WKSRC_STS_GPIO1) | + BIT(CS40L26_IRQ1_WKSRC_STS_I2C) | + BIT(CS40L26_IRQ1_WKSRC_STS_SPI) | + BIT(CS40L26_IRQ1_WKSRC_STS_GPIO2) | + BIT(CS40L26_IRQ1_WKSRC_STS_GPIO3) | + BIT(CS40L26_IRQ1_WKSRC_STS_GPIO4); + + return cs40l26_irq_update_mask(cs40l26, CS40L26_IRQ1_MASK_1, val, mask); +} + +static int cs40l26_hw_init(struct cs40l26_private *cs40l26) +{ + int error; + + error = cs40l26_irq_update_mask(cs40l26, CS40L26_IRQ1_MASK_1, 0, + GENMASK(CS40L26_IRQ1_AMP_ERR, + CS40L26_IRQ1_BST_OVP_FLAG_RISE) | + BIT(CS40L26_IRQ1_VIRTUAL2_MBOX_WR)); + if (error) + return error; + + error = cs40l26_irq_update_mask(cs40l26, CS40L26_IRQ1_MASK_2, 0, + BIT(CS40L26_IRQ2_PLL_LOCK) | + BIT(CS40L26_IRQ2_PLL_READY)); + if (error) + return error; + + error = cs40l26_wksrc_config(cs40l26); + if (error) + return error; + + error = cs40l26_gpio_config(cs40l26); + if (error) + return error; + + error = cs40l26_bst_ipk_config(cs40l26); + if (error) + return error; + + return cs40l26_bst_ctl_config(cs40l26); +} + +static int cs40l26_lbst_short_test(struct cs40l26_private *cs40l26) +{ + struct regmap *regmap = cs40l26->regmap; + struct device *dev = cs40l26->dev; + unsigned int err, vbst_ctl_1, vbst_ctl_2; + int error; + + error = regmap_read(regmap, CS40L26_VBST_CTL_2, &vbst_ctl_2); + if (error) + return error; + + error = regmap_update_bits(regmap, CS40L26_VBST_CTL_2, CS40L26_BST_CTL_SEL_MASK, + CS40L26_BST_CTL_SEL_FIXED); + if (error) + return error; + + error = regmap_read(regmap, CS40L26_VBST_CTL_1, &vbst_ctl_1); + if (error) + return error; + + error = regmap_update_bits(regmap, CS40L26_VBST_CTL_1, CS40L26_BST_CTL_MASK, + CS40L26_BST_CTL_VP); + if (error) + return error; + + error = regmap_update_bits(regmap, CS40L26_GLOBAL_ENABLES, CS40L26_GLOBAL_EN_MASK, 1); + if (error) + return error; + + /* Wait until boost converter is guranteed to be powered up */ + usleep_range(CS40L26_BST_TIME_US_MIN, CS40L26_BST_TIME_US_MAX); + + error = regmap_read(regmap, CS40L26_ERROR_RELEASE, &err); + if (error) + return error; + + if (err & BIT(CS40L26_BST_SHORT_ERR_RLS)) { + dev_err(dev, "FATAL: Boost shorted at startup\n"); + return error; + } + + error = regmap_update_bits(regmap, CS40L26_GLOBAL_ENABLES, CS40L26_GLOBAL_EN_MASK, 0); + if (error) + return error; + + error = regmap_write(regmap, CS40L26_VBST_CTL_2, vbst_ctl_2); + if (error) + return error; + + return regmap_write(regmap, CS40L26_VBST_CTL_1, vbst_ctl_1); +} + +static int cs40l26_part_num_resolve(struct cs40l26_private *cs40l26) +{ + unsigned int devid, revid; + int error; + + error = regmap_read(cs40l26->regmap, CS40L26_DEVID, &devid); + if (error) + return error; + devid &= CS40L26_DEVID_MASK; + + switch (devid) { + case CS40L26_DEVID_A: + case CS40L26_DEVID_B: + case CS40L26_DEVID_L27_A: + case CS40L26_DEVID_L27_B: + cs40l26->devid = devid; + break; + default: + dev_err(cs40l26->dev, "Invalid device ID: 0x%06X\n", devid); + return -EINVAL; + } + + error = regmap_read(cs40l26->regmap, CS40L26_REVID, &revid); + if (error) + return error; + revid &= CS40L26_REVID_MASK; + + if (revid == CS40L26_REVID_A1 || revid == CS40L26_REVID_B0) { + cs40l26->revid = revid; + } else { + dev_err(cs40l26->dev, "Invalid device revision: 0x%02X\n", revid); + return -EINVAL; + } + + dev_info(cs40l26->dev, "Cirrus Logic CS40L26 ID: 0x%06X, Revision: 0x%02X\n", + cs40l26->devid, cs40l26->revid); + + return 0; +} + +static int cs40l26_parse_properties(struct cs40l26_private *cs40l26) +{ + int error; + + error = device_property_read_u32(cs40l26->dev, "cirrus,bst-ctl-microvolt", + &cs40l26->vbst_uv); + if (error && error != -EINVAL) + return error; + + error = device_property_read_u32(cs40l26->dev, "cirrus,bst-ipk-microamp", + &cs40l26->bst_ipk_ua); + if (error && error != -EINVAL) + return error; + + cs40l26->exploratory_mode_enabled = !device_property_present(cs40l26->dev, + "cirrus,bst-exploratory-mode-disable"); + + return 0; +} + +static int cs40l26_dsp_state_get(struct cs40l26_private *cs40l26, unsigned int *state) +{ + unsigned int dsp_state = CS40L26_DSP_STATE_NONE; + int i, error = 0; + + if (cs40l26->dsp.running) { + for (i = 0; i < CS40L26_DSP_TIMEOUT_COUNT; i++) { + error = cs40l26_fw_ctl_read(&cs40l26->dsp, "PM_CUR_STATE", + CS40L26_PM_ALGO_ID, &dsp_state); + + if (error) + return error; + + if (dsp_state != CS40L26_DSP_STATE_NONE) + break; + + usleep_range(CS40L26_DSP_TIMEOUT_US, CS40L26_DSP_TIMEOUT_US + 100); + } + if (i == CS40L26_DSP_TIMEOUT_COUNT) { + dev_err(cs40l26->dev, "Timed out reading PM_CUR_STATE\n"); + return -ETIMEDOUT; + } + } else { + error = regmap_read_poll_timeout(cs40l26->regmap, + CS40L26_A1_PM_CUR_STATE_STATIC_REG, + dsp_state, dsp_state != CS40L26_DSP_STATE_NONE, + CS40L26_DSP_TIMEOUT_US, + CS40L26_DSP_TIMEOUT_US * CS40L26_DSP_TIMEOUT_COUNT); + if (error) + return error; + } + + switch (dsp_state) { + case CS40L26_DSP_STATE_HIBERNATE: + case CS40L26_DSP_STATE_SHUTDOWN: + case CS40L26_DSP_STATE_STANDBY: + case CS40L26_DSP_STATE_ACTIVE: + *state = CS40L26_DSP_STATE_MASK & dsp_state; + break; + default: + dev_err(cs40l26->dev, "DSP state %u is invalid\n", dsp_state); + error = -EINVAL; + } + + return error; +} + +static bool cs40l26_dsp_can_run(struct cs40l26_private *cs40l26) +{ + unsigned int pm_state_locks, state; + int error; + + error = cs40l26_dsp_state_get(cs40l26, &state); + if (error) + return false; + + if (state == CS40L26_DSP_STATE_ACTIVE) + return true; + + if (state != CS40L26_DSP_STATE_STANDBY) { + dev_err(cs40l26->dev, "DSP in bad state: %u\n", state); + return false; + } + + if (cs40l26->dsp.running) { + error = cs40l26_fw_ctl_read_raw(&cs40l26->dsp, "PM_STATE_LOCKS", + CS40L26_PM_ALGO_ID, CS40L26_DSP_LOCK3_OFFSET / + sizeof(u32), sizeof(u32), &pm_state_locks); + if (error) + return false; + } else { + error = regmap_read(cs40l26->regmap, CS40L26_A1_PM_STATE_LOCKS3_STATIC_REG, + &pm_state_locks); + if (error) + return false; + } + + return (pm_state_locks & CS40L26_DSP_LOCK3_MASK) == CS40L26_DSP_LOCK3_MASK; +} + +static int cs40l26_mbox_buffer_read(struct cs40l26_private *cs40l26, u32 *val) +{ + unsigned int q_rd, q_wt, status; + int error; + + mutex_lock(&cs40l26->dsp.pwr_lock); + error = cs40l26_fw_ctl_read(&cs40l26->dsp, "QUEUE_WT", CS40L26_MAILBOX_ALGO_ID, &q_wt); + if (error) + goto exit_pwr_lock; + + error = cs40l26_fw_ctl_read(&cs40l26->dsp, "QUEUE_RD", CS40L26_MAILBOX_ALGO_ID, &q_rd); + if (error) + goto exit_pwr_lock; + + if (q_rd - sizeof(u32) == q_wt) { + error = cs40l26_fw_ctl_read(&cs40l26->dsp, "MAILBOX_STATUS", + CS40L26_MAILBOX_ALGO_ID, &status); + if (error) + goto exit_pwr_lock; + + if (status) { + dev_err(cs40l26->dev, "Mailbox buffer is full, info missing\n"); + error = -ENOSPC; + goto exit_pwr_lock; + } + } + + if (q_rd == q_wt) { + dev_dbg(cs40l26->dev, "Reached end of queue\n"); + mutex_unlock(&cs40l26->dsp.pwr_lock); + return 1; + } + + error = regmap_read(cs40l26->regmap, q_rd, val); + if (error) + goto exit_pwr_lock; + + q_rd = (q_rd == cs40l26->mbox_q_last) ? cs40l26->mbox_q_base : q_rd + sizeof(u32); + + error = cs40l26_fw_ctl_write(&cs40l26->dsp, "QUEUE_RD", CS40L26_MAILBOX_ALGO_ID, q_rd); + +exit_pwr_lock: + mutex_unlock(&cs40l26->dsp.pwr_lock); + + return error; +} + +static int cs40l26_handle_mbox_buffer(struct cs40l26_private *cs40l26) +{ + struct device *dev = cs40l26->dev; + unsigned int val; + + while (!cs40l26_mbox_buffer_read(cs40l26, &val)) { + if ((val & CS40L26_DSP_MBOX_CMD_INDEX_MASK) == CS40L26_DSP_MBOX_PANIC) { + dev_err(dev, "DSP PANIC! Error condition: 0x%06X\n", + (u32)(val & CS40L26_DSP_MBOX_CMD_PAYLOAD_MASK)); + return -ENOTRECOVERABLE; + } + + switch (val) { + case CS40L26_DSP_MBOX_COMPLETE_MBOX: + dev_dbg(dev, "Mailbox: COMPLETE_MBOX\n"); + complete_all(&cs40l26->erase); + break; + case CS40L26_DSP_MBOX_COMPLETE_GPIO: + dev_dbg(dev, "Mailbox: COMPLETE_GPIO\n"); + break; + case CS40L26_DSP_MBOX_TRIGGER_CP: + dev_dbg(dev, "Mailbox: TRIGGER_CP\n"); + break; + case CS40L26_DSP_MBOX_TRIGGER_GPIO: + dev_dbg(dev, "Mailbox: TRIGGER_GPIO\n"); + break; + case CS40L26_DSP_MBOX_PM_AWAKE: + cs40l26->wksrc_sts |= CS40L26_WKSRC_STS_EN; + dev_dbg(dev, "Mailbox: AWAKE\n"); + break; + case CS40L26_DSP_MBOX_SYS_ACK: + dev_err(dev, "Mailbox: ACK\n"); + return -EPERM; + default: + dev_err(dev, "MBOX buffer value (0x%X) is invalid\n", val); + return -EINVAL; + } + } + + return 0; +} + +static int cs40l26_error_release(struct cs40l26_private *cs40l26, unsigned int err_rls) +{ + unsigned int err_sts, err_cfg; + int error; + + error = regmap_read(cs40l26->regmap, CS40L26_ERROR_RELEASE, &err_sts); + if (error) + return error; + + err_cfg = err_sts & ~BIT(err_rls); + + error = regmap_write(cs40l26->regmap, CS40L26_ERROR_RELEASE, err_cfg); + if (error) + return error; + + err_cfg |= BIT(err_rls); + + error = regmap_write(cs40l26->regmap, CS40L26_ERROR_RELEASE, err_cfg); + if (error) + return error; + + err_cfg &= ~BIT(err_rls); + + return regmap_write(cs40l26->regmap, CS40L26_ERROR_RELEASE, err_cfg); +} + +static int cs40l26_handle_irq1(struct cs40l26_private *cs40l26, unsigned int irq1) +{ + unsigned int err_rls = 0, last_wksrc, pwrmgt_sts; + struct device *dev = cs40l26->dev; + int error = 0; + + switch (irq1) { + case CS40L26_IRQ1_GPIO1_RISE: + case CS40L26_IRQ1_GPIO1_FALL: + if (cs40l26->wksrc_sts & CS40L26_WKSRC_STS_EN) + dev_dbg(dev, "GPIO1 %s edge detected\n", + (irq1 != 0) ? "falling" : "rising"); + + cs40l26->wksrc_sts |= CS40L26_WKSRC_STS_EN; + break; + case CS40L26_IRQ1_WKSRC_STS_ANY: + dev_dbg(dev, "Wakesource detected (ANY)\n"); + + error = regmap_read(cs40l26->regmap, CS40L26_PWRMGT_STS, &pwrmgt_sts); + if (error) + goto err; + + cs40l26->wksrc_sts = (u8)((pwrmgt_sts & CS40L26_WKSRC_STS_MASK) >> + CS40L26_WKSRC_STS_SHIFT); + + mutex_lock(&cs40l26->dsp.pwr_lock); + error = cs40l26_fw_ctl_read(&cs40l26->dsp, "LAST_WAKESRC_CTL", + cs40l26->dsp.fw_id, &last_wksrc); + mutex_unlock(&cs40l26->dsp.pwr_lock); + if (error) + goto err; + + cs40l26->last_wksrc_pol = (u8)(last_wksrc & CS40L26_WKSRC_GPIO_POL_MASK); + break; + case CS40L26_IRQ1_WKSRC_STS_GPIO1: + dev_dbg(dev, "GPIO1 event woke device from hibernate\n"); + + if (cs40l26->wksrc_sts & cs40l26->last_wksrc_pol) { + dev_dbg(dev, "GPIO1 falling edge detected\n"); + cs40l26->wksrc_sts |= CS40L26_WKSRC_STS_EN; + } else { + dev_dbg(dev, "GPIO1 rising edge detected\n"); + } + break; + case CS40L26_IRQ1_WKSRC_STS_SPI: + dev_dbg(dev, "SPI event woke device from hibernate\n"); + break; + case CS40L26_IRQ1_WKSRC_STS_I2C: + dev_dbg(dev, "I2C event woke device from hibernate\n"); + break; + case CS40L26_IRQ1_BST_OVP_FLAG_RISE: + dev_warn(dev, "BST overvoltage warning\n"); + break; + case CS40L26_IRQ1_BST_OVP_FLAG_FALL: + dev_warn(dev, "BST voltage returned below warning threshold\n"); + break; + case CS40L26_IRQ1_BST_OVP_ERR: + dev_err(dev, "BST overvolt. error\n"); + err_rls = CS40L26_BST_OVP_ERR_RLS; + break; + case CS40L26_IRQ1_BST_DCM_UVP_ERR: + dev_err(dev, "BST undervolt. error\n"); + err_rls = CS40L26_BST_UVP_ERR_RLS; + break; + case CS40L26_IRQ1_BST_SHORT_ERR: + dev_err(dev, "LBST short detected\n"); + err_rls = CS40L26_BST_SHORT_ERR_RLS; + break; + case CS40L26_IRQ1_BST_IPK_FLAG: + dev_dbg(dev, "Current is being limited by LBST inductor\n"); + break; + case CS40L26_IRQ1_TEMP_WARN_RISE: + dev_err(dev, "Die overtemperature warning\n"); + err_rls = CS40L26_TEMP_WARN_ERR_RLS; + break; + case CS40L26_IRQ1_TEMP_WARN_FALL: + dev_warn(dev, "Die temperature returned below threshold\n"); + break; + case CS40L26_IRQ1_TEMP_ERR: + dev_err(dev, "Die overtemperature error\n"); + err_rls = CS40L26_TEMP_ERR_RLS; + break; + case CS40L26_IRQ1_AMP_ERR: + dev_err(dev, "AMP short detected\n"); + err_rls = CS40L26_AMP_SHORT_ERR_RLS; + break; + case CS40L26_IRQ1_VIRTUAL2_MBOX_WR: + error = regmap_write(cs40l26->regmap, CS40L26_IRQ1_EINT_1, BIT(irq1)); + if (error) + return error; + + return cs40l26_handle_mbox_buffer(cs40l26); + default: + return 0; + } + + if (err_rls) + error = cs40l26_error_release(cs40l26, err_rls); + +err: + regmap_write(cs40l26->regmap, CS40L26_IRQ1_EINT_1, BIT(irq1)); + + return error; +} + +static int cs40l26_handle_irq2(struct cs40l26_private *cs40l26, unsigned int irq2) +{ + struct device *dev = cs40l26->dev; + + switch (irq2) { + case CS40L26_IRQ2_PLL_LOCK: + dev_dbg(dev, "PLL achieved lock\n"); + break; + case CS40L26_IRQ2_PLL_READY: + dev_dbg(dev, "PLL ready\n"); + break; + default: + return 0; + } + + return regmap_write(cs40l26->regmap, CS40L26_IRQ1_EINT_2, BIT(irq2)); +} + +static irqreturn_t cs40l26_irq(int irq, void *data) +{ + struct cs40l26_private *cs40l26 = (struct cs40l26_private *)data; + struct regmap *regmap = cs40l26->regmap; + struct device *dev = cs40l26->dev; + unsigned int eint, sts; + unsigned long eint_l; + int i, error; + + if (cs40l26_pm_enter(dev)) { + dev_err(dev, "Interrupts missed\n"); + return IRQ_NONE; + } + + mutex_lock(&cs40l26->lock); + + if (regmap_read(regmap, CS40L26_IRQ1_STATUS, &sts)) { + dev_err(dev, "Failed to read IRQ1 Status\n"); + error = IRQ_NONE; + goto err; + } + + if (sts != CS40L26_IRQ_STATUS_ASSERT) { + dev_err(dev, "IRQ1 asserted with no pending interrupts\n"); + error = IRQ_NONE; + goto err; + } + + error = regmap_read(regmap, CS40L26_IRQ1_EINT_1, &eint); + if (error) + goto err; + eint_l = (unsigned long)eint; + + for_each_set_bit(i, &eint_l, CS40L26_IRQ1_NUM_IRQS) { + error = cs40l26_handle_irq1(cs40l26, i); + if (error) + goto err; + } + + error = regmap_read(regmap, CS40L26_IRQ1_EINT_2, &eint); + if (error) + goto err; + eint_l = (unsigned long)eint; + + for_each_set_bit(i, &eint_l, CS40L26_IRQ2_NUM_IRQS) { + error = cs40l26_handle_irq2(cs40l26, i); + if (error) + goto err; + } + +err: + mutex_unlock(&cs40l26->lock); + + cs40l26_pm_exit(dev); + + if (error) + dev_err(dev, "Failed to process IRQ (%d): %d\n", irq, error); + + return IRQ_HANDLED; +} + +static int __cs40l26_prevent_hiber(struct cs40l26_private *cs40l26) +{ + + int i, error; + + for (i = 0; i < CS40L26_DSP_TIMEOUT_COUNT; i++) { + error = cs40l26_mailbox_write(cs40l26, CS40L26_DSP_MBOX_CMD_PREVENT_HIBER); + if (error) + return error; + + usleep_range(CS40L26_DSP_TIMEOUT_US, CS40L26_DSP_TIMEOUT_US + 100); + + if (cs40l26_dsp_can_run(cs40l26)) + break; + } + + if (i == CS40L26_DSP_TIMEOUT_COUNT) { + dev_err(cs40l26->dev, "Failed to prevent hibernation\n"); + return -ETIMEDOUT; + } + + return 0; +} + +static int cs40l26_prevent_hiber(struct cs40l26_private *cs40l26) +{ + int error; + + mutex_lock(&cs40l26->dsp.pwr_lock); + + error = __cs40l26_prevent_hiber(cs40l26); + + mutex_unlock(&cs40l26->dsp.pwr_lock); + + return error; +} + +static int cs40l26_allow_hiber(struct cs40l26_private *cs40l26) +{ + cs40l26->wksrc_sts = 0x00; + + /* Don't perform mailbox write since reading for acknowledgment will wake the device */ + return regmap_write(cs40l26->regmap, CS40L26_DSP_VIRTUAL1_MBOX_1, + CS40L26_DSP_MBOX_CMD_ALLOW_HIBER); +} + +static int cs40l26_dsp_pre_config(struct cs40l26_private *cs40l26) +{ + unsigned int dsp_state, halo_state, timeout_ms; + int error, i; + + error = regmap_read(cs40l26->regmap, CS40L26_A1_DSP_HALO_STATE_REG, &halo_state); + if (error) + return error; + + if (halo_state != CS40L26_DSP_HALO_STATE_RUN) { + dev_err(cs40l26->dev, "DSP not Ready: HALO_STATE: %u\n", halo_state); + return -EINVAL; + } + + error = cs40l26_pm_timeout_ms_get(cs40l26, CS40L26_DSP_STATE_ACTIVE, &timeout_ms); + if (error) { + dev_err(cs40l26->dev, "Failed to get active->standby timeout: %d\n", error); + return error; + } + + for (i = 0; i < CS40L26_DSP_STATE_TIMEOUT_COUNT; i++) { + error = cs40l26_dsp_state_get(cs40l26, &dsp_state); + if (error) + return error; + + if (dsp_state != CS40L26_DSP_STATE_SHUTDOWN && + dsp_state != CS40L26_DSP_STATE_STANDBY) + dev_warn(cs40l26->dev, "DSP core not safe to kill\n"); + else + break; + + usleep_range(timeout_ms * 1000, (timeout_ms * 1000) + 100); + } + if (i == CS40L26_DSP_STATE_TIMEOUT_COUNT) { + dev_err(cs40l26->dev, "DSP Core could not be shut down\n"); + return -ETIMEDOUT; + } + + return regmap_write(cs40l26->regmap, CS40L26_DSP1_CCM_CORE_CONTROL, + CS40L26_DSP_CCM_CORE_KILL); +} + +static const struct reg_sequence cs40l26_a1_errata[] = { + { CS40L26_PLL_REFCLK_DETECT_0, 0x00000000 }, + { CS40L26_TEST_KEY_CTRL, 0x00000055 }, + { CS40L26_TEST_KEY_CTRL, 0x000000AA }, + { CS40L26_TEST_LBST, CS40L26_DISABLE_EXPLORATORY_MODE }, +}; + +static int cs40l26_handle_errata(struct cs40l26_private *cs40l26) +{ + int num_writes = 1, error; + + if (!cs40l26->exploratory_mode_enabled) { + error = cs40l26_lbst_short_test(cs40l26); + if (error) + return error; + + num_writes = ARRAY_SIZE(cs40l26_a1_errata); + } + + return cs40l26_pseq_multi_write(cs40l26, cs40l26_a1_errata, num_writes, + false, CS40L26_PSEQ_OP_WRITE_FULL); +} + +static int cs40l26_cs_dsp_pre_run(struct cs_dsp *dsp) +{ + struct cs40l26_private *cs40l26 = container_of(dsp, struct cs40l26_private, dsp); + int error; + + error = cs40l26_pm_timeout_ms_set(cs40l26, CS40L26_DSP_STATE_STANDBY, + CS40L26_PM_STDBY_TIMEOUT_MS_DEFAULT); + if (error) { + dev_err(cs40l26->dev, "Failed to set standby->hibernate timeout: %d\n", error); + return error; + } + + error = cs40l26_pm_timeout_ms_set(cs40l26, CS40L26_DSP_STATE_ACTIVE, + CS40L26_PM_ACTIVE_TIMEOUT_MS_DEFAULT); + if (error) { + dev_err(cs40l26->dev, "Failed to set active->standby timeout: %d\n", error); + return error; + } + + error = regmap_update_bits(cs40l26->regmap, CS40L26_PWRMGT_CTL, CS40L26_MEM_RDY_MASK, + 1 << CS40L26_MEM_RDY_SHIFT); + if (error) + return error; + + error = cs40l26_fw_ctl_read(dsp, "QUEUE_BASE", CS40L26_MAILBOX_ALGO_ID, + &cs40l26->mbox_q_base); + if (error) + return error; + + error = cs40l26_fw_ctl_read(dsp, "QUEUE_LEN", CS40L26_MAILBOX_ALGO_ID, + &cs40l26->mbox_q_len); + if (error) + return error; + + cs40l26->mbox_q_last = cs40l26->mbox_q_base + ((cs40l26->mbox_q_len - 1) * sizeof(u32)); + + error = cs40l26_fw_ctl_write(dsp, "CALL_RAM_INIT", dsp->fw_id, 1); + if (error) + return error; + + error = cs40l26_pseq_init(cs40l26); + if (error) + return error; + + return cs40l26_handle_errata(cs40l26); +} + +static int cs40l26_cs_dsp_post_run(struct cs_dsp *dsp) +{ + struct cs40l26_private *cs40l26 = container_of(dsp, struct cs40l26_private, dsp); + unsigned int halo_state, nwaves; + int error; + + /* + * cs_dsp_halo_start_core() resets the DSP core. + * Therefore, hibernation must be prevented again + */ + error = __cs40l26_prevent_hiber(cs40l26); + if (error) + return error; + + error = cs40l26_fw_ctl_read(&cs40l26->dsp, "HALO_STATE", dsp->fw_id, &halo_state); + if (error) + return error; + + if (halo_state != CS40L26_DSP_HALO_STATE_RUN) { + dev_err(dsp->dev, "Firmware in unexpected state: %u\n", halo_state); + return -EINVAL; + } + + error = cs40l26_hw_init(cs40l26); + if (error) + return error; + + error = cs40l26_fw_ctl_write(&cs40l26->dsp, "TIMEOUT_MS", CS40L26_VIBEGEN_ALGO_ID, 0); + if (error) + return error; + + error = cs40l26_num_waves_get(cs40l26, &nwaves); + if (error) + return error; + + dev_info(dsp->dev, "%s loaded with %u RAM waveforms\n", "CS40L26", nwaves); + + return 0; +} + +static const struct cs_dsp_client_ops cs40l26_cs_dsp_client_ops = { + .pre_run = cs40l26_cs_dsp_pre_run, + .post_run = cs40l26_cs_dsp_post_run, +}; + +static int cs40l26_cs_dsp_init(struct cs40l26_private *cs40l26) +{ + int error; + + cs40l26->dsp.num = 1; + cs40l26->dsp.type = WMFW_HALO; + cs40l26->dsp.dev = cs40l26->dev; + cs40l26->dsp.regmap = cs40l26->regmap; + cs40l26->dsp.base = CS40L26_DSP_CTRL_BASE; + cs40l26->dsp.base_sysinfo = CS40L26_DSP1_SYS_INFO_ID; + cs40l26->dsp.mem = cs40l26_dsp_regions; + cs40l26->dsp.num_mems = CS40L26_DSP_NUM_REGIONS; + cs40l26->dsp.lock_regions = 0xFFFFFFFF; + cs40l26->dsp.client_ops = &cs40l26_cs_dsp_client_ops; + + error = cs_dsp_halo_init(&cs40l26->dsp); + if (error) { + dev_err(cs40l26->dev, "Failed to initialize HALO core\n"); + return error; + } + + cs40l26->dsp_initialized = true; + + return 0; +} + +static void cs40l26_dsp_start(struct cs40l26_private *cs40l26) +{ + struct device *dev = cs40l26->dev; + + if (cs40l26_dsp_pre_config(cs40l26)) + goto err_rls_fw; + + mutex_lock(&cs40l26->lock); + + if (cs_dsp_power_up(&cs40l26->dsp, cs40l26->wmfw, "cs40l26.wmfw", + cs40l26->bin, "cs40l26.bin", "cs40l26")) + goto err_mutex; + + if (cs40l26->dsp.fw_id != CS40L26_FW_ID) { + dev_err(dev, "Invalid firmware ID: 0x%X\n", cs40l26->dsp.fw_id); + goto err_mutex; + } + + if (cs40l26->dsp.fw_id_version < CS40L26_FW_ID_VERSION_MIN) { + dev_err(dev, "Invalid firmware version: 0x%X\n", cs40l26->dsp.fw_id_version); + goto err_mutex; + } + + if (cs_dsp_run(&cs40l26->dsp)) + dev_err(dev, "Failed to run DSP\n"); + +err_mutex: + mutex_unlock(&cs40l26->lock); + +err_rls_fw: + release_firmware(cs40l26->bin); + release_firmware(cs40l26->wmfw); + + cs40l26_pm_runtime_setup(cs40l26); +} + +static void cs40l26_coeff_upload(const struct firmware *bin, void *context) +{ + struct cs40l26_private *cs40l26 = (struct cs40l26_private *)context; + + if (!bin) { + dev_err(cs40l26->dev, "Failed to request coefficient file\n"); + return; + } + + cs40l26->bin = bin; + + cs40l26_dsp_start(cs40l26); +} + +static void cs40l26_fw_upload(const struct firmware *wmfw, void *context) +{ + struct cs40l26_private *cs40l26 = (struct cs40l26_private *)context; + + if (!wmfw) { + dev_err(cs40l26->dev, "Failed to request firmware file\n"); + return; + } + + if (cs40l26_cs_dsp_init(cs40l26)) { + release_firmware(wmfw); + return; + } + + cs40l26->wmfw = wmfw; + + request_firmware_nowait(THIS_MODULE, FW_ACTION_UEVENT, + "cs40l26.bin", cs40l26->dev, GFP_KERNEL, + cs40l26, cs40l26_coeff_upload); +} + +static inline int cs40l26_worker_init(struct cs40l26_private *cs40l26) +{ + cs40l26->vibe_workqueue = + alloc_ordered_workqueue("cs40l26_workqueue", WQ_HIGHPRI); + if (IS_ERR_OR_NULL(cs40l26->vibe_workqueue)) { + dev_err(cs40l26->dev, "Failed to allocate workqueue\n"); + return -ENOMEM; + } + + INIT_WORK(&cs40l26->erase_work, cs40l26_erase_worker); + INIT_WORK(&cs40l26->set_gain_work, cs40l26_set_gain_worker); + INIT_WORK(&cs40l26->upload_work, cs40l26_upload_worker); + INIT_WORK(&cs40l26->vibe_start_work, cs40l26_vibe_start_worker); + INIT_WORK(&cs40l26->vibe_stop_work, cs40l26_vibe_stop_worker); + + return 0; +} + +static struct regulator_bulk_data cs40l26_supplies[] = { + { .supply = "VP" }, + { .supply = "VA" }, +}; + +static int cs40l26_device_init(struct cs40l26_private *cs40l26) +{ + struct device *dev = cs40l26->dev; + int error; + + error = devm_regulator_bulk_get(dev, CS40L26_NUM_SUPPLIES, + cs40l26_supplies); + if (error) { + dev_err(dev, "Failed to request core supplies: %d\n", error); + return error; + } + + error = cs40l26_parse_properties(cs40l26); + if (error) + return error; + + error = regulator_bulk_enable(CS40L26_NUM_SUPPLIES, cs40l26_supplies); + if (error) { + dev_err(dev, "Failed to enable core supplies: %d\n", error); + return error; + } + + cs40l26->reset_gpio = + devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH); + if (IS_ERR_OR_NULL(cs40l26->reset_gpio)) { + dev_err(dev, "Failed to get reset GPIO: %d\n", + (int)PTR_ERR(cs40l26->reset_gpio)); + error = -ENOENT; + return error; + } + + usleep_range(CS40L26_MIN_RESET_PULSE_WIDTH_US, + CS40L26_MIN_RESET_PULSE_WIDTH_US + 100); + + gpiod_set_value_cansleep(cs40l26->reset_gpio, 0); + + usleep_range(CS40L26_CP_READY_DELAY_US, + CS40L26_CP_READY_DELAY_US + 100); + + mutex_init(&cs40l26->lock); + + error = cs40l26_worker_init(cs40l26); + if (error) { + dev_err(dev, "Failed to initialize worker threads\n"); + return error; + } + + /* + * Initialize completion but immediately complete since no effects are + * active at this point. This avoids having to determine if + * init_completion() or reinit_completion() is needed at the time of + * an incoming trigger. + */ + init_completion(&cs40l26->erase); + complete_all(&cs40l26->erase); + + error = cs40l26_part_num_resolve(cs40l26); + if (error) + return error; + + /* + * The DSP may lock up if a haptic effect is triggered via GPI + * event or control port and the PLL is set to closed-loop. + * + * Set the PLL to open-loop and remove default GPI mappings + * to prevent this while the driver is loading and configuring + * RAM firmware. + * + * The firmware will set the PLL back to closed-loop when it is loaded + * and the DSP has been started. + */ + error = regmap_update_bits(cs40l26->regmap, CS40L26_REFCLK_INPUT, + CS40L26_PLL_REFCLK_LOOP_MASK, + 1 << CS40L26_PLL_REFCLK_LOOP_SHIFT); + if (error) + return error; + + error = regmap_read(cs40l26->regmap, CS40L26_A1_EVENT_MAP_1, + &cs40l26->gpio_press_default); + if (error) + return error; + + error = regmap_read(cs40l26->regmap, CS40L26_A1_EVENT_MAP_2, + &cs40l26->gpio_release_default); + if (error) + return error; + + error = cs40l26_erase_gpio_mapping(cs40l26, CS40L26_GPIO_MAP_A_PRESS); + if (error) + return error; + + error = cs40l26_erase_gpio_mapping(cs40l26, CS40L26_GPIO_MAP_A_RELEASE); + if (error) + return error; + + /* Set LRA to HI-Z in order to avoid fault conditions */ + return regmap_update_bits(cs40l26->regmap, CS40L26_TST_DAC_MSM_CONFIG, + CS40L26_SPK_DEFAULT_HIZ_MASK, + 1 << CS40L26_SPK_DEFAULT_HIZ_SHIFT); +} + +int cs40l26_probe(struct cs40l26_private *cs40l26) +{ + struct device *dev = cs40l26->dev; + int error; + + error = cs40l26_device_init(cs40l26); + if (error) + goto err; + + error = __cs40l26_prevent_hiber(cs40l26); + if (error) + goto err; + + error = request_firmware_nowait(THIS_MODULE, FW_ACTION_UEVENT, + "cs40l26.wmfw", dev, GFP_KERNEL, + cs40l26, cs40l26_fw_upload); + if (error) { + dev_err(dev, "Failed to load firmware: %d\n", error); + goto err; + } + + error = devm_request_threaded_irq(dev, cs40l26->irq, NULL, cs40l26_irq, + IRQF_ONESHOT | IRQF_SHARED, "cs40l26", + cs40l26); + if (error) { + dev_err(dev, "Failed to request threaded IRQ\n"); + goto err; + } + + error = cs40l26_input_init(cs40l26); + if (error) + goto err; + + return 0; +err: + cs40l26_remove(cs40l26); + + return error; +} +EXPORT_SYMBOL_GPL(cs40l26_probe); + +int cs40l26_remove(struct cs40l26_private *cs40l26) +{ + struct regulator *vp_consumer = cs40l26_supplies[CS40L26_VP_SUPPLY].consumer; + struct regulator *va_consumer = cs40l26_supplies[CS40L26_VA_SUPPLY].consumer; + + disable_irq(cs40l26->irq); + + cs40l26_pm_runtime_teardown(cs40l26); + + if (cs40l26->dsp_initialized) { + if (cs40l26->dsp.running) + cs_dsp_stop(&cs40l26->dsp); + if (cs40l26->dsp.booted) + cs_dsp_power_down(&cs40l26->dsp); + if (&cs40l26->dsp) + cs_dsp_remove(&cs40l26->dsp); + } + + if (cs40l26->vibe_workqueue) { + cancel_work_sync(&cs40l26->erase_work); + cancel_work_sync(&cs40l26->set_gain_work); + cancel_work_sync(&cs40l26->upload_work); + cancel_work_sync(&cs40l26->vibe_start_work); + cancel_work_sync(&cs40l26->vibe_stop_work); + destroy_workqueue(cs40l26->vibe_workqueue); + } + + if (!IS_ERR_OR_NULL(cs40l26->reset_gpio)) + gpiod_set_value_cansleep(cs40l26->reset_gpio, 1); + + if (va_consumer) + regulator_disable(va_consumer); + + if (vp_consumer) + regulator_disable(vp_consumer); + + return 0; +} +EXPORT_SYMBOL_GPL(cs40l26_remove); + +static int __maybe_unused cs40l26_suspend(struct device *dev) +{ + struct cs40l26_private *cs40l26 = dev_get_drvdata(dev); + int error; + + mutex_lock(&cs40l26->lock); + dev_dbg(dev, "%s: Enabling hibernation\n", __func__); + + error = cs40l26_allow_hiber(cs40l26); + + mutex_unlock(&cs40l26->lock); + + return error; +} + +static int __maybe_unused cs40l26_sys_suspend(struct device *dev) +{ + struct i2c_client *i2c_client = to_i2c_client(dev); + + dev_dbg(dev, "System suspend, disabling IRQ\n"); + + disable_irq(i2c_client->irq); + + return 0; +} + +static int __maybe_unused cs40l26_sys_suspend_noirq(struct device *dev) +{ + struct i2c_client *i2c_client = to_i2c_client(dev); + + dev_dbg(dev, "Late system suspend, re-enabling IRQ\n"); + enable_irq(i2c_client->irq); + + return 0; +} + +static int __maybe_unused cs40l26_resume(struct device *dev) +{ + dev_dbg(dev, "%s: Disabling hibernation\n", __func__); + + return cs40l26_prevent_hiber(dev_get_drvdata(dev)); +} + +static int __maybe_unused cs40l26_sys_resume(struct device *dev) +{ + struct i2c_client *i2c_client = to_i2c_client(dev); + + dev_dbg(dev, "System resume, re-enabling IRQ\n"); + + enable_irq(i2c_client->irq); + + return 0; +} + +static int __maybe_unused cs40l26_sys_resume_noirq(struct device *dev) +{ + struct i2c_client *i2c_client = to_i2c_client(dev); + + dev_dbg(dev, "Early system resume, disabling IRQ\n"); + + disable_irq(i2c_client->irq); + + return 0; +} + +const struct dev_pm_ops cs40l26_pm_ops = { + SET_RUNTIME_PM_OPS(cs40l26_suspend, cs40l26_resume, NULL) + SET_SYSTEM_SLEEP_PM_OPS(cs40l26_sys_suspend, cs40l26_sys_resume) + SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(cs40l26_sys_suspend_noirq, cs40l26_sys_resume_noirq) +}; +EXPORT_SYMBOL_GPL(cs40l26_pm_ops); + +MODULE_DESCRIPTION("CS40L26 Boosted Class D Amplifier for Haptics"); +MODULE_AUTHOR("Fred Treven, Cirrus Logic Inc. <fred.treven@xxxxxxxxxx>"); +MODULE_LICENSE("GPL"); diff --git a/include/linux/input/cs40l26.h b/include/linux/input/cs40l26.h new file mode 100644 index 000000000000..bc0acec9cf23 --- /dev/null +++ b/include/linux/input/cs40l26.h @@ -0,0 +1,486 @@ +/* SPDX-License-Identifier: GPL-2.0 + * + * CS40L26 Boosted Haptic Driver with Integrated DSP and + * Waveform Memory with Advanced Closed Loop Algorithms and LRA protection + * + * Copyright 2023 Cirrus Logic, Inc. + * + * Author: Fred Treven <fred.treven@xxxxxxxxxx> + */ + +#ifndef __CS40L26_H__ +#define __CS40L26_H__ + +#include <linux/bitops.h> +#include <linux/completion.h> +#include <linux/gpio/consumer.h> +#include <linux/input.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> +#include <linux/firmware/cirrus/cs_dsp.h> +#include <linux/firmware/cirrus/wmfw.h> + +#define CS40L26_FIRSTREG 0x0 +#define CS40L26_LASTREG 0x3C7DFE8 + +#define CS40L26_DEVID 0x0 +#define CS40L26_REVID 0x4 +#define CS40L26_TEST_KEY_CTRL 0x40 +#define CS40L26_GLOBAL_ENABLES 0x2014 +#define CS40L26_ERROR_RELEASE 0x2034 +#define CS40L26_PWRMGT_CTL 0x2900 +#define CS40L26_PWRMGT_STS 0x290C +#define CS40L26_REFCLK_INPUT 0x2C04 +#define CS40L26_PLL_REFCLK_DETECT_0 0x2C28 +#define CS40L26_VBST_CTL_1 0x3800 +#define CS40L26_VBST_CTL_2 0x3804 +#define CS40L26_BST_IPK_CTL 0x3808 +#define CS40L26_TEST_LBST 0x391C +#define CS40L26_NGATE1_INPUT 0x4C60 +#define CS40L26_DAC_MSM_CONFIG 0x7400 +#define CS40L26_TST_DAC_MSM_CONFIG 0x7404 +#define CS40L26_IRQ1_STATUS 0x10004 +#define CS40L26_IRQ1_EINT_1 0x10010 +#define CS40L26_IRQ1_EINT_2 0x10014 +#define CS40L26_IRQ1_EINT_3 0x10018 +#define CS40L26_IRQ1_EINT_4 0x1001C +#define CS40L26_IRQ1_EINT_5 0x10020 +#define CS40L26_IRQ1_STS_1 0x10090 +#define CS40L26_IRQ1_STS_2 0x10094 +#define CS40L26_IRQ1_STS_3 0x10098 +#define CS40L26_IRQ1_STS_4 0x1009C +#define CS40L26_IRQ1_STS_5 0x100A0 +#define CS40L26_IRQ1_MASK_1 0x10110 +#define CS40L26_IRQ1_MASK_2 0x10114 +#define CS40L26_IRQ1_MASK_3 0x10118 +#define CS40L26_IRQ1_MASK_4 0x1011C +#define CS40L26_IRQ1_MASK_5 0x10120 +#define CS40L26_MIXER_NGATE_CH1_CFG 0x12004 +#define CS40L26_DSP_MBOX_1 0x13000 +#define CS40L26_DSP_MBOX_2 0x13004 +#define CS40L26_DSP_MBOX_3 0x13008 +#define CS40L26_DSP_MBOX_4 0x1300C +#define CS40L26_DSP_MBOX_5 0x13010 +#define CS40L26_DSP_MBOX_6 0x13014 +#define CS40L26_DSP_MBOX_7 0x13018 +#define CS40L26_DSP_MBOX_8 0x1301C +#define CS40L26_DSP_VIRTUAL1_MBOX_1 0x13020 +#define CS40L26_DSP_VIRTUAL1_MBOX_2 0x13024 +#define CS40L26_DSP_VIRTUAL1_MBOX_3 0x13028 +#define CS40L26_DSP_VIRTUAL1_MBOX_4 0x1302C +#define CS40L26_DSP_VIRTUAL1_MBOX_5 0x13030 +#define CS40L26_DSP_VIRTUAL1_MBOX_6 0x13034 +#define CS40L26_DSP_VIRTUAL1_MBOX_7 0x13038 +#define CS40L26_DSP_VIRTUAL1_MBOX_8 0x1303C +#define CS40L26_DSP_VIRTUAL2_MBOX_1 0x13040 +#define CS40L26_DSP_VIRTUAL2_MBOX_2 0x13044 +#define CS40L26_DSP_VIRTUAL2_MBOX_3 0x13048 +#define CS40L26_DSP_VIRTUAL2_MBOX_4 0x1304C +#define CS40L26_DSP_VIRTUAL2_MBOX_5 0x13050 +#define CS40L26_DSP_VIRTUAL2_MBOX_6 0x13054 +#define CS40L26_DSP_VIRTUAL2_MBOX_7 0x13058 +#define CS40L26_DSP_VIRTUAL2_MBOX_8 0x1305C +#define CS40L26_OTP_MEM0 0x30000 +#define CS40L26_OTP_MEM31 0x3007C +#define CS40L26_DSP1_XMEM_PACKED_0 0x2000000 +#define CS40L26_DSP1_XMEM_PACKED_6143 0x2005FFC +#define CS40L26_DSP1_XROM_PACKED_0 0x2006000 +#define CS40L26_DSP1_XROM_PACKED_4604 0x200A7F0 +#define CS40L26_DSP1_XMEM_UNPACKED32_0 0x2400000 +#define CS40L26_DSP1_XMEM_UNPACKED32_4095 0x2403FFC +#define CS40L26_DSP1_XROM_UNPACKED32_0 0x2404000 +#define CS40L26_DSP1_XROM_UNPACKED32_3070 0x2406FF8 +#define CS40L26_DSP1_SYS_INFO_ID 0x25E0000 +#define CS40L26_DSP1_XMEM_UNPACKED24_0 0x2800000 +#define CS40L26_DSP1_XMEM_UNPACKED24_8191 0x2807FFC +#define CS40L26_DSP1_XROM_UNPACKED24_0 0x2808000 +#define CS40L26_DSP1_XROM_UNPACKED24_6141 0x280DFF4 +#define CS40L26_DSP1_SCRATCH1 0x2B805C0 +#define CS40L26_DSP1_SCRATCH2 0x2B805C8 +#define CS40L26_DSP1_SCRATCH3 0x2B805D0 +#define CS40L26_DSP1_SCRATCH4 0x2B805D8 +#define CS40L26_DSP1_CCM_CORE_CONTROL 0x2BC1000 +#define CS40L26_DSP1_YMEM_PACKED_0 0x2C00000 +#define CS40L26_DSP1_YMEM_PACKED_1532 0x2C017F0 +#define CS40L26_DSP1_YMEM_UNPACKED32_0 0x3000000 +#define CS40L26_DSP1_YMEM_UNPACKED32_1022 0x3000FF8 +#define CS40L26_DSP1_YMEM_UNPACKED24_0 0x3400000 +#define CS40L26_DSP1_YMEM_UNPACKED24_2045 0x3401FF4 +#define CS40L26_DSP1_PMEM_0 0x3800000 +#define CS40L26_DSP1_PMEM_5114 0x3804FE8 +#define CS40L26_DSP1_PROM_0 0x3C60000 +#define CS40L26_DSP1_PROM_30714 0x3C7DFE8 + +/* Device */ +#define CS40L26_DEVID_A 0x40A260 +#define CS40L26_DEVID_B 0x40A26B +#define CS40L26_DEVID_L27_A 0x40A270 +#define CS40L26_DEVID_L27_B 0x40A27B +#define CS40L26_NUM_DEVS 4 +#define CS40L26_DEVID_MASK GENMASK(23, 0) +#define CS40L26_REVID_A1 0xA1 +#define CS40L26_REVID_B0 0xB0 +#define CS40L26_REVID_MASK GENMASK(7, 0) + +#define CS40L26_MIN_RESET_PULSE_WIDTH_US 1500 +#define CS40L26_CP_READY_DELAY_US 6000 + +#define CS40L26_DATA_SRC_DSP1TX4 0x35 +#define CS40L26_MIXER_NGATE_CH1_CFG_DEFAULT 0x00010003 +#define CS40L26_TST_DAC_MSM_CFG_DFLT_CHG_VAL_H16 0x1133 + +#define CS40L26_SPK_DEFAULT_HIZ_MASK BIT(28) +#define CS40L26_SPK_DEFAULT_HIZ_SHIFT 28 + +#define CS40L26_DSP_CCM_CORE_KILL 0x00000080 +#define CS40L26_DSP_CCM_CORE_RESET 0x00000281 + +#define CS40L26_MEM_RDY_MASK BIT(1) +#define CS40L26_MEM_RDY_SHIFT 1 + +/* Errata */ +#define CS40L26_DISABLE_EXPLORATORY_MODE 0x0100C080 + +/* Boost Converter Control */ +#define CS40L26_GLOBAL_EN_MASK BIT(0) + +#define CS40L26_BST_IPK_UA_MAX 4800000 +#define CS40L26_BST_IPK_UA_MIN 1600000 +#define CS40L26_BST_IPK_UA_STEP 50000 +#define CS40L26_BST_IPK_DEFAULT 0x4A + +#define CS40L26_BST_UV_MIN 2500000 +#define CS40L26_BST_UV_MAX 11000000 +#define CS40L26_BST_UV_STEP 50000 +#define CS40L26_BST_DEFAULT 0xAA + +#define CS40L26_BST_CTL_VP 0x00 +#define CS40L26_BST_CTL_MASK GENMASK(7, 0) +#define CS40L26_BST_CTL_SEL_MASK GENMASK(1, 0) +#define CS40L26_BST_CTL_SEL_FIXED 0x0 +#define CS40L26_BST_CTL_LIM_EN_MASK BIT(2) +#define CS40L26_BST_CTL_LIM_EN_SHIFT 2 + +#define CS40L26_BST_TIME_US_MIN 10000 +#define CS40L26_BST_TIME_US_MAX 10100 + +/* Phase Locked Loop */ +#define CS40L26_PLL_OL 1 +#define CS40L26_PLL_CL 0 + +#define CS40L26_PLL_REFCLK_LOOP_MASK BIT(11) +#define CS40L26_PLL_REFCLK_LOOP_SHIFT 11 + +/* Haptic Triggering */ +#define CS40L26_RAM_INDEX_START 0x01000000 +#define CS40L26_RAM_INDEX_END 0x0100007F + +#define CS40L26_ROM_INDEX_START 0x01800000 +#define CS40L26_ROM_INDEX_END 0x01800026 + +#define CS40L26_BUZZGEN_INDEX_START 0x01800080 +#define CS40L26_BUZZGEN_INDEX_END 0x01800085 + +#define CS40L26_BUZZGEN_NUM_CONFIGS 5 + +#define CS40L26_BUZZGEN_PERIOD_MS_MAX 10 +#define CS40L26_BUZZGEN_PERIOD_MS_MIN 4 + +#define CS40L26_BUZZGEN_DURATION_OFFSET 8 +#define CS40L26_BUZZGEN_DURATION_DIV_STEP 4 + +#define CS40L26_BUZZGEN_LEVEL_MIN 0x00 +#define CS40L26_BUZZGEN_LEVEL_MAX 0xFF + +#define CS40L26_VIBEGEN_MAX_TIME_MS 10000 + +#define CS40L26_NUM_ATTEN_LUT_VALUES 101 + +/* GPIO */ +#define CS40L26_EVENT_MAP_GPI_DISABLE 0x1FF + +#define CS40L26_BTN_INDEX_MASK GENMASK(7, 0) +#define CS40L26_BTN_BUZZ_MASK BIT(7) +#define CS40L26_BTN_BUZZ_SHIFT 7 +#define CS40L26_BTN_BANK_MASK BIT(8) +#define CS40L26_BTN_BANK_SHIFT 8 +#define CS40L26_BTN_NUM_MASK GENMASK(14, 12) +#define CS40L26_BTN_NUM_SHIFT 12 +#define CS40L26_BTN_EDGE_MASK BIT(15) +#define CS40L26_BTN_EDGE_SHIFT 15 + +/* A1 ROM Controls */ +#define CS40L26_A1_PM_CUR_STATE_STATIC_REG 0x02800370 +#define CS40L26_A1_PM_STATE_LOCKS_STATIC_REG 0x02800378 +#define CS40L26_A1_PM_STATE_LOCKS3_STATIC_REG (CS40L26_A1_PM_STATE_LOCKS_STATIC_REG + \ + CS40L26_DSP_LOCK3_OFFSET) +#define CS40L26_A1_PM_TIMEOUT_TICKS_STATIC_REG 0x02800350 +#define CS40L26_A1_PM_STDBY_TICKS_STATIC_REG 0x02800360 +#define CS40L26_A1_PM_ACTIVE_TICKS_STATIC_REG 0x02800368 +#define CS40L26_A1_DSP_HALO_STATE_REG 0x02800fa8 +#define CS40L26_A1_DSP_REQ_ACTIVE_REG 0x02800c08 +#define CS40L26_A1_EVENT_MAP_1 0x02806FC4 +#define CS40L26_A1_EVENT_MAP_2 0x02806FC8 + +/* Interrupts */ +#define CS40L26_IRQ_STATUS_ASSERT 0x1 + +#define CS40L26_IRQ_EINT1_ALL_MASK 0xFFDC7FFF +#define CS40L26_IRQ_EINT2_ALL_MASK 0x07DE0400 + +/* Firmware Handling */ +#define CS40L26_FW_ID 0x1800D4 +#define CS40L26_FW_ID_VERSION_MIN 0x070237 + +/* Algorithms */ +#define CS40L26_BUZZGEN_ALGO_ID 0x0004F202 +#define CS40L26_EVENT_HANDLER_ALGO_ID 0x0004F200 +#define CS40L26_GPIO_ALGO_ID 0x0004F201 +#define CS40L26_MAILBOX_ALGO_ID 0x0004F203 +#define CS40L26_PM_ALGO_ID 0x0004F206 +#define CS40L26_VIBEGEN_ALGO_ID 0x000400BD +#define CS40L26_EXT_ALGO_ID 0x0004013C + +/* DSP */ +#define CS40L26_DSP_STATE_HIBERNATE 0 +#define CS40L26_DSP_STATE_SHUTDOWN 1 +#define CS40L26_DSP_STATE_STANDBY 2 +#define CS40L26_DSP_STATE_ACTIVE 3 +#define CS40L26_DSP_STATE_NONE 4 +#define CS40L26_DSP_STATE_MASK GENMASK(7, 0) + +#define CS40L26_DSP_LOCK3_OFFSET 8 +#define CS40L26_DSP_LOCK3_MASK BIT(1) +#define CS40L26_DSP_PM_ACTIVE BIT(0) + +#define CS40L26_DSP_HALO_STATE_RUN 2 + +#define CS40L26_DSP_CTRL_BASE 0x2B80000 +#define CS40L26_DSP_NUM_REGIONS 5 + +#define CS40L26_DSP_TIMEOUT_US 1000 +#define CS40L26_DSP_TIMEOUT_COUNT 100 +#define CS40L26_PM_LOCKS_TIMEOUT_COUNT 10 +#define CS40L26_DSP_STATE_TIMEOUT_COUNT 10 + +/* Mailbox Controls */ +#define CS40L26_DSP_MBOX_RESET 0x0 + +#define CS40L26_DSP_MBOX_CMD_HIBER 0x02000001 +#define CS40L26_DSP_MBOX_CMD_WAKEUP 0x02000002 +#define CS40L26_DSP_MBOX_CMD_PREVENT_HIBER 0x02000003 +#define CS40L26_DSP_MBOX_CMD_ALLOW_HIBER 0x02000004 +#define CS40L26_DSP_MBOX_CMD_SHUTDOWN 0x02000005 +#define CS40L26_DSP_MBOX_PM_CMD_BASE CS40L26_DSP_MBOX_CMD_HIBER + +#define CS40L26_DSP_MBOX_CMD_INDEX_MASK GENMASK(28, 24) +#define CS40L26_DSP_MBOX_CMD_INDEX_SHIFT 24 +#define CS40L26_DSP_MBOX_CMD_PAYLOAD_MASK GENMASK(23, 0) + +#define CS40L26_DSP_MBOX_CMD_STOP_PLAYBACK 0x05000000 + +#define CS40L26_DSP_MBOX_COMPLETE_MBOX 0x01000000 +#define CS40L26_DSP_MBOX_COMPLETE_GPIO 0x01000001 +#define CS40L26_DSP_MBOX_TRIGGER_CP 0x01000010 +#define CS40L26_DSP_MBOX_TRIGGER_GPIO 0x01000011 +#define CS40L26_DSP_MBOX_PM_AWAKE 0x02000002 +#define CS40L26_DSP_MBOX_SYS_ACK 0x0A000000 +#define CS40L26_DSP_MBOX_PANIC 0x0C000000 + +#define CS40L26_DSP_MBOX_QUEUE_SIZE_BYTES 16 + +/* Power Management */ +#define CS40L26_PM_STDBY_TIMEOUT_LOWER_OFFSET 16 +#define CS40L26_PM_STDBY_TIMEOUT_UPPER_OFFSET 20 +#define CS40L26_PM_STDBY_TIMEOUT_MS_DEFAULT 100 +#define CS40L26_PM_ACTIVE_TIMEOUT_LOWER_OFFSET 24 +#define CS40L26_PM_ACTIVE_TIMEOUT_UPPER_OFFSET 28 +#define CS40L26_PM_ACTIVE_TIMEOUT_MS_DEFAULT 250 +#define CS40L26_PM_TIMEOUT_TICKS_LOWER_MASK GENMASK(23, 0) +#define CS40L26_PM_TIMEOUT_TICKS_UPPER_MASK GENMASK(7, 0) +#define CS40L26_PM_TIMEOUT_TICKS_UPPER_SHIFT 24 +#define CS40L26_PM_TICKS_PER_MS 32 + +#define CS40L26_AUTOSUSPEND_DELAY_MS 2000 + +#define CS40L26_PSEQ_MAX_WORDS 129 +#define CS40L26_PSEQ_OP_MASK GENMASK(23, 16) +#define CS40L26_PSEQ_OP_SHIFT 16 +#define CS40L26_PSEQ_OP_WRITE_FULL 0x00 +#define CS40L26_PSEQ_OP_WRITE_FULL_WORDS 3 +#define CS40L26_PSEQ_OP_WRITE_ADDR8 0x02 +#define CS40L26_PSEQ_OP_WRITE_L16 0x04 +#define CS40L26_PSEQ_OP_WRITE_H16 0x05 +#define CS40L26_PSEQ_OP_WRITE_X16_WORDS 2 +#define CS40L26_PSEQ_OP_END 0xFF +#define CS40L26_PSEQ_OP_END_WORDS 1 +#define CS40L26_PSEQ_INVALID_ADDR 0xFF000000 +#define CS40L26_PSEQ_WRITE_FULL_LOWER_ADDR_SHIFT 8 +#define CS40L26_PSEQ_WRITE_FULL_UPPER_ADDR_SHIFT 16 +#define CS40L26_PSEQ_WRITE_FULL_LOWER_ADDR_MASK GENMASK(15, 0) +#define CS40L26_PSEQ_WRITE_FULL_UPPER_ADDR_MASK GENMASK(31, 0) +#define CS40L26_PSEQ_WRITE_FULL_UPPER_DATA_SHIFT 24 +#define CS40L26_PSEQ_WRITE_FULL_LOWER_DATA_MASK GENMASK(23, 0) +#define CS40L26_PSEQ_WRITE_FULL_UPPER_DATA_MASK GENMASK(31, 24) +#define CS40L26_PSEQ_WRITE_FULL_OP_MASK GENMASK(31, 8) +#define CS40L26_PSEQ_WRITE_X16_LOWER_ADDR_SHIFT 16 +#define CS40L26_PSEQ_WRITE_X16_LOWER_ADDR_MASK GENMASK(7, 0) +#define CS40L26_PSEQ_WRITE_X16_UPPER_ADDR_SHIFT 8 +#define CS40L26_PSEQ_WRITE_X16_UPPER_ADDR_MASK GENMASK(23, 8) +#define CS40L26_PSEQ_WRITE_X16_UPPER_DATA_SHIFT 0 +#define CS40L26_PSEQ_WRITE_X16_UPPER_DATA_MASK GENMASK(31, 0) +#define CS40L26_PSEQ_WRITE_X16_OP_MASK GENMASK(23, 16) + +/* Wake Sources */ +#define CS40L26_WKSRC_STS_MASK GENMASK(9, 4) +#define CS40L26_WKSRC_STS_SHIFT 4 +#define CS40L26_WKSRC_STS_EN BIT(7) +#define CS40L26_WKSRC_GPIO_POL_MASK GENMASK(3, 0) + +#define CS40L26_IRQ1_WKSRC_MASK GENMASK(14, 9) +#define CS40L26_IRQ1_WKSRC_SHIFT 9 +#define CS40L26_IRQ1_WKSRC_GPIO_MASK GENMASK(3, 0) + +/* Interrupts */ +#define CS40L26_IRQ1_GPIO1_RISE 0 +#define CS40L26_IRQ1_GPIO1_FALL 1 +#define CS40L26_IRQ1_GPIO2_RISE 2 +#define CS40L26_IRQ1_GPIO4_FALL 7 +#define CS40L26_IRQ1_WKSRC_STS_ANY 8 +#define CS40L26_IRQ1_WKSRC_STS_GPIO1 9 +#define CS40L26_IRQ1_WKSRC_STS_GPIO2 10 +#define CS40L26_IRQ1_WKSRC_STS_GPIO3 11 +#define CS40L26_IRQ1_WKSRC_STS_GPIO4 12 +#define CS40L26_IRQ1_WKSRC_STS_SPI 13 +#define CS40L26_IRQ1_WKSRC_STS_I2C 14 +#define CS40L26_IRQ1_BST_OVP_FLAG_RISE 18 +#define CS40L26_IRQ1_BST_OVP_FLAG_FALL 19 +#define CS40L26_IRQ1_BST_OVP_ERR 20 +#define CS40L26_IRQ1_BST_DCM_UVP_ERR 21 +#define CS40L26_IRQ1_BST_SHORT_ERR 22 +#define CS40L26_IRQ1_BST_IPK_FLAG 23 +#define CS40L26_IRQ1_TEMP_WARN_RISE 24 +#define CS40L26_IRQ1_TEMP_WARN_FALL 25 +#define CS40L26_IRQ1_TEMP_ERR 26 +#define CS40L26_IRQ1_AMP_ERR 27 +#define CS40L26_IRQ1_VIRTUAL2_MBOX_WR 31 +#define CS40L26_IRQ1_NUM_IRQS 32 + +#define CS40L26_IRQ2_PLL_LOCK 0 +#define CS40L26_IRQ2_PLL_READY 5 +#define CS40L26_IRQ2_NUM_IRQS 27 + +enum cs40l26_power_supply { + CS40L26_VP_SUPPLY, + CS40L26_VA_SUPPLY, + CS40L26_NUM_SUPPLIES, +}; + +enum cs40l26_wvfrm_bank { + CS40L26_WVFRM_BANK_RAM, + CS40L26_WVFRM_BANK_ROM, + CS40L26_WVFRM_BANK_OWT, + CS40L26_WVFRM_BANK_BUZ, + CS40L26_WVFRM_BANK_NUM, +}; + +enum cs40l26_gpio_map { + CS40L26_GPIO_MAP_A_PRESS, + CS40L26_GPIO_MAP_A_RELEASE, + CS40L26_GPIO_MAP_NUM_AVAILABLE, + CS40L26_GPIO_MAP_INVALID, +}; + +enum cs40l26_err_rls { + CS40L26_RSRVD_ERR_RLS, /* 0 */ + CS40L26_AMP_SHORT_ERR_RLS, /* 1 */ + CS40L26_BST_SHORT_ERR_RLS, /* 2 */ + CS40L26_BST_OVP_ERR_RLS, /* 3 */ + CS40L26_BST_UVP_ERR_RLS, /* 4 */ + CS40L26_TEMP_WARN_ERR_RLS, /* 5 */ + CS40L26_TEMP_ERR_RLS, /* 6 */ +}; + +struct cs40l26_pseq_op { + u8 size; + u16 offset; /* offset in bytes from pseq_base */ + u8 operation; + u32 words[3]; + struct list_head list; +}; + +struct cs40l26_pseq_params { + int num_op_words; + unsigned int op_mask; + unsigned int low_addr_shift; + unsigned int low_addr_mask; + unsigned int low_data_mask; + unsigned int up_addr_shift; + unsigned int up_addr_mask; + unsigned int up_data_mask; + unsigned int up_data_shift; +}; + +struct cs40l26_buzzgen_config { + char *duration_name; + char *freq_name; + char *level_name; + int effect_id; +}; + +struct cs40l26_uploaded_effect { + int id; + u32 trigger_index; + u16 wvfrm_bank; + enum cs40l26_gpio_map mapping; + struct list_head list; +}; + +struct cs40l26_private { + struct device *dev; + struct regmap *regmap; + struct cs_dsp dsp; + int irq; + struct mutex lock; + struct gpio_desc *reset_gpio; + unsigned int devid; + u8 revid; + struct input_dev *input; + struct ff_effect *erase_effect; + struct ff_effect *trigger_effect; + struct ff_effect upload_effect; + s16 *raw_custom_data; + struct list_head effect_head; + struct work_struct erase_work; + struct work_struct set_gain_work; + struct work_struct upload_work; + struct work_struct vibe_start_work; + struct work_struct vibe_stop_work; + struct workqueue_struct *vibe_workqueue; + struct completion erase; + int erase_error; + int upload_error; + u16 gain_pct; + u8 wksrc_sts; + u8 last_wksrc_pol; + struct list_head pseq_op_head; + unsigned int gpio_press_default; + unsigned int gpio_release_default; + u32 mbox_q_base; + u32 mbox_q_len; + u32 mbox_q_last; + unsigned int bst_ipk_ua; + unsigned int vbst_uv; + bool exploratory_mode_enabled; + const struct firmware *wmfw; + const struct firmware *bin; + bool dsp_initialized; +}; + +int cs40l26_probe(struct cs40l26_private *cs40l26); +int cs40l26_remove(struct cs40l26_private *cs40l26); + +extern const struct regmap_config cs40l26_regmap; +extern const struct dev_pm_ops cs40l26_pm_ops; + +#endif /* __CS40L26_H__ */ -- 2.7.4
