This adds the generic core support for Cirrus Logic "Madera" class codecs. These are complex audio codec SoCs with a variety of digital and analogue I/O, onboard audio processing and DSPs, and other features. These codecs are all based off a common set of hardware IP so can be supported by a core of common code (with a few minor device-to-device variations). Signed-off-by: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxx> Signed-off-by: Nikesh Oswal <Nikesh.Oswal@xxxxxxxxxx> Signed-off-by: Richard Fitzgerald <rf@xxxxxxxxxxxxxxxxxxxxx> --- Changes since v9: - Moved a bit of reset GPIO fetching code from the probe to madera_get_reset_gpio(). - Added a few explanatory comments and edited some others to be clearer. - Removed pointer to codec driver pdata substructure. We'll add this back when the codec driver goes into the tree, then it can be a member instead of an unnecessary pointer dereference. - Removed the irqchip driver pdata substruct, it only contained a single unsigned int for flags, so put this directly into the MFD pdata. --- MAINTAINERS | 3 + drivers/mfd/Kconfig | 29 ++ drivers/mfd/Makefile | 5 + drivers/mfd/madera-core.c | 609 +++++++++++++++++++++++++++++++++++++++ drivers/mfd/madera-i2c.c | 140 +++++++++ drivers/mfd/madera-spi.c | 139 +++++++++ drivers/mfd/madera.h | 44 +++ include/linux/mfd/madera/core.h | 187 ++++++++++++ include/linux/mfd/madera/pdata.h | 59 ++++ 9 files changed, 1215 insertions(+) create mode 100644 drivers/mfd/madera-core.c create mode 100644 drivers/mfd/madera-i2c.c create mode 100644 drivers/mfd/madera-spi.c create mode 100644 drivers/mfd/madera.h create mode 100644 include/linux/mfd/madera/core.h create mode 100644 include/linux/mfd/madera/pdata.h diff --git a/MAINTAINERS b/MAINTAINERS index 5e9fb7c34d81..d2a2e30e3609 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -3487,7 +3487,10 @@ L: patches@xxxxxxxxxxxxxxxxxxxxx T: git https://github.com/CirrusLogic/linux-drivers.git W: https://github.com/CirrusLogic/linux-drivers/wiki S: Supported +F: Documentation/devicetree/bindings/mfd/madera.txt F: include/linux/mfd/madera/* +F: drivers/mfd/madera* +F: drivers/mfd/cs47l* CLEANCACHE API M: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index b860eb5aa194..f5ca392f8bc2 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -232,6 +232,35 @@ config MFD_CROS_EC_CHARDEV If you have a supported Chromebook, choose Y or M here. The module will be called cros_ec_dev. +config MFD_MADERA + tristate "Cirrus Logic Madera codecs" + select MFD_CORE + select REGMAP + select REGMAP_IRQ + select MADERA_IRQ + select PINCTRL + select PINCTRL_MADERA + help + Support for the Cirrus Logic Madera platform audio codecs + +config MFD_MADERA_I2C + tristate "Cirrus Logic Madera codecs with I2C" + depends on MFD_MADERA + depends on I2C + select REGMAP_I2C + help + Support for the Cirrus Logic Madera platform audio SoC + core functionality controlled via I2C. + +config MFD_MADERA_SPI + tristate "Cirrus Logic Madera codecs with SPI" + depends on MFD_MADERA + depends on SPI_MASTER + select REGMAP_SPI + help + Support for the Cirrus Logic Madera platform audio SoC + core functionality controlled via SPI. + config MFD_ASIC3 bool "Compaq ASIC3" depends on GPIOLIB && ARM diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index e9fd20dba18d..db9ee6d24d91 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -72,6 +72,11 @@ wm8994-objs := wm8994-core.o wm8994-irq.o wm8994-regmap.o obj-$(CONFIG_MFD_WM8994) += wm8994.o obj-$(CONFIG_MFD_WM97xx) += wm97xx-core.o +madera-objs := madera-core.o +obj-$(CONFIG_MFD_MADERA) += madera.o +obj-$(CONFIG_MFD_MADERA_I2C) += madera-i2c.o +obj-$(CONFIG_MFD_MADERA_SPI) += madera-spi.o + obj-$(CONFIG_TPS6105X) += tps6105x.o obj-$(CONFIG_TPS65010) += tps65010.o obj-$(CONFIG_TPS6507X) += tps6507x.o diff --git a/drivers/mfd/madera-core.c b/drivers/mfd/madera-core.c new file mode 100644 index 000000000000..8cfea969b060 --- /dev/null +++ b/drivers/mfd/madera-core.c @@ -0,0 +1,609 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Core MFD support for Cirrus Logic Madera codecs + * + * Copyright (C) 2015-2018 Cirrus Logic + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by the + * Free Software Foundation; version 2. + */ + +#include <linux/device.h> +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/gpio.h> +#include <linux/mfd/core.h> +#include <linux/module.h> +#include <linux/notifier.h> +#include <linux/of.h> +#include <linux/of_gpio.h> +#include <linux/platform_device.h> +#include <linux/pm_runtime.h> +#include <linux/regmap.h> +#include <linux/regulator/consumer.h> +#include <linux/regulator/machine.h> +#include <linux/regulator/of_regulator.h> + +#include <linux/mfd/madera/core.h> +#include <linux/mfd/madera/registers.h> + +#include "madera.h" + +#define CS47L35_SILICON_ID 0x6360 +#define CS47L85_SILICON_ID 0x6338 +#define CS47L90_SILICON_ID 0x6364 + +#define MADERA_32KZ_MCLK2 1 + +static const char * const madera_core_supplies[] = { + "AVDD", + "DBVDD1", +}; + +static const struct mfd_cell madera_ldo1_devs[] = { + { .name = "madera-ldo1" }, +}; + +static const char * const cs47l35_supplies[] = { + "MICVDD", + "DBVDD2", + "CPVDD1", + "CPVDD2", + "SPKVDD", +}; + +static const struct mfd_cell cs47l35_devs[] = { + { .name = "madera-pinctrl", }, + { .name = "madera-irq", }, + { .name = "madera-micsupp", }, + { .name = "madera-gpio", }, + { .name = "madera-extcon", }, + { + .name = "cs47l35-codec", + .parent_supplies = cs47l35_supplies, + .num_parent_supplies = ARRAY_SIZE(cs47l35_supplies), + }, +}; + +static const char * const cs47l85_supplies[] = { + "MICVDD", + "DBVDD2", + "DBVDD3", + "DBVDD4", + "CPVDD1", + "CPVDD2", + "SPKVDDL", + "SPKVDDR", +}; + +static const struct mfd_cell cs47l85_devs[] = { + { .name = "madera-pinctrl", }, + { .name = "madera-irq", }, + { .name = "madera-micsupp" }, + { .name = "madera-gpio", }, + { .name = "madera-extcon", }, + { + .name = "cs47l85-codec", + .parent_supplies = cs47l85_supplies, + .num_parent_supplies = ARRAY_SIZE(cs47l85_supplies), + }, +}; + +static const char * const cs47l90_supplies[] = { + "MICVDD", + "DBVDD2", + "DBVDD3", + "DBVDD4", + "CPVDD1", + "CPVDD2", +}; + +static const struct mfd_cell cs47l90_devs[] = { + { .name = "madera-pinctrl", }, + { .name = "madera-irq", }, + { .name = "madera-micsupp", }, + { .name = "madera-gpio", }, + { .name = "madera-extcon", }, + { + .name = "cs47l90-codec", + .parent_supplies = cs47l90_supplies, + .num_parent_supplies = ARRAY_SIZE(cs47l90_supplies), + }, +}; + +/* Used by madera-i2c and madera-spi drivers */ +const char *madera_name_from_type(enum madera_type type) +{ + switch (type) { + case CS47L35: + return "CS47L35"; + case CS47L85: + return "CS47L85"; + case CS47L90: + return "CS47L90"; + case CS47L91: + return "CS47L91"; + case WM1840: + return "WM1840"; + default: + return "Unknown"; + } +} +EXPORT_SYMBOL_GPL(madera_name_from_type); + +#define MADERA_BOOT_POLL_MAX_INTERVAL_US 5000 +#define MADERA_BOOT_POLL_TIMEOUT_US 25000 + +static int madera_wait_for_boot(struct madera *madera) +{ + unsigned int val; + int ret; + + /* + * We can't use an interrupt as we need to runtime resume to do so, + * so we poll the status bit. This won't race with the interrupt + * handler because it will be blocked on runtime resume. + */ + ret = regmap_read_poll_timeout(madera->regmap, + MADERA_IRQ1_RAW_STATUS_1, + val, + (val & MADERA_BOOT_DONE_STS1), + MADERA_BOOT_POLL_MAX_INTERVAL_US, + MADERA_BOOT_POLL_TIMEOUT_US); + + if (ret) + dev_err(madera->dev, "Polling BOOT_DONE_STS failed: %d\n", ret); + + /* + * BOOT_DONE defaults to unmasked on boot so we must ack it. + * Do this unconditionally to avoid interrupt storms. + */ + regmap_write(madera->regmap, MADERA_IRQ1_STATUS_1, + MADERA_BOOT_DONE_EINT1); + + pm_runtime_mark_last_busy(madera->dev); + + return ret; +} + +static int madera_soft_reset(struct madera *madera) +{ + int ret; + + ret = regmap_write(madera->regmap, MADERA_SOFTWARE_RESET, 0); + if (ret != 0) { + dev_err(madera->dev, "Failed to soft reset device: %d\n", ret); + return ret; + } + + /* Allow time for internal clocks to startup after reset */ + usleep_range(1000, 2000); + + return 0; +} + +static void madera_enable_hard_reset(struct madera *madera) +{ + if (!madera->pdata.reset) + return; + + /* + * There are many existing out-of-tree users of these codecs that we + * can't break so preserve the expected behaviour of setting the line + * low to assert reset. + */ + gpiod_set_raw_value_cansleep(madera->pdata.reset, 0); +} + +static void madera_disable_hard_reset(struct madera *madera) +{ + if (!madera->pdata.reset) + return; + + gpiod_set_raw_value_cansleep(madera->pdata.reset, 1); + usleep_range(1000, 2000); +} + +static int __maybe_unused madera_runtime_resume(struct device *dev) +{ + struct madera *madera = dev_get_drvdata(dev); + int ret; + + dev_dbg(dev, "Leaving sleep mode\n"); + + ret = regulator_enable(madera->dcvdd); + if (ret) { + dev_err(dev, "Failed to enable DCVDD: %d\n", ret); + return ret; + } + + regcache_cache_only(madera->regmap, false); + regcache_cache_only(madera->regmap_32bit, false); + + ret = madera_wait_for_boot(madera); + if (ret) + goto err; + + ret = regcache_sync(madera->regmap); + if (ret) { + dev_err(dev, "Failed to restore 16-bit register cache\n"); + goto err; + } + + ret = regcache_sync(madera->regmap_32bit); + if (ret) { + dev_err(dev, "Failed to restore 32-bit register cache\n"); + goto err; + } + + return 0; + +err: + regcache_cache_only(madera->regmap_32bit, true); + regcache_cache_only(madera->regmap, true); + regulator_disable(madera->dcvdd); + + return ret; +} + +static int __maybe_unused madera_runtime_suspend(struct device *dev) +{ + struct madera *madera = dev_get_drvdata(dev); + + dev_dbg(madera->dev, "Entering sleep mode\n"); + + regcache_cache_only(madera->regmap, true); + regcache_mark_dirty(madera->regmap); + regcache_cache_only(madera->regmap_32bit, true); + regcache_mark_dirty(madera->regmap_32bit); + + regulator_disable(madera->dcvdd); + + return 0; +} + +const struct dev_pm_ops madera_pm_ops = { + SET_RUNTIME_PM_OPS(madera_runtime_suspend, + madera_runtime_resume, + NULL) +}; +EXPORT_SYMBOL_GPL(madera_pm_ops); + +const struct of_device_id madera_of_match[] = { + { .compatible = "cirrus,cs47l35", .data = (void *)CS47L35 }, + { .compatible = "cirrus,cs47l85", .data = (void *)CS47L85 }, + { .compatible = "cirrus,cs47l90", .data = (void *)CS47L90 }, + { .compatible = "cirrus,cs47l91", .data = (void *)CS47L91 }, + { .compatible = "cirrus,wm1840", .data = (void *)WM1840 }, + {} +}; +EXPORT_SYMBOL_GPL(madera_of_match); + +static int madera_get_reset_gpio(struct madera *madera) +{ + struct gpio_desc *reset; + int ret; + + if (madera->pdata.reset) + return 0; + + reset = devm_gpiod_get_optional(madera->dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(reset)) { + ret = PTR_ERR(reset); + if (ret != -EPROBE_DEFER) + dev_err(madera->dev, "Failed to request /RESET: %d\n", + ret); + return ret; + } + + /* + * A hard reset is needed for full reset of the chip. We allow running + * without hard reset only because it can be useful for early + * prototyping and some debugging, but we need to warn it's not ideal. + */ + if (!reset) + dev_warn(madera->dev, + "Running without reset GPIO is not recommended\n"); + + madera->pdata.reset = reset; + + return 0; +} + +static void madera_set_micbias_info(struct madera *madera) +{ + /* + * num_childbias is an array because future codecs can have different + * childbiases for each micbias. Unspecified values default to 0. + */ + switch (madera->type) { + case CS47L35: + madera->num_micbias = 2; + madera->num_childbias[0] = 2; + madera->num_childbias[1] = 2; + return; + case CS47L85: + case WM1840: + madera->num_micbias = 4; + /* no child biases */ + return; + case CS47L90: + case CS47L91: + madera->num_micbias = 2; + madera->num_childbias[0] = 4; + madera->num_childbias[1] = 4; + return; + default: + return; + } +} + +int madera_dev_init(struct madera *madera) +{ + struct device *dev = madera->dev; + unsigned int hwid; + int (*patch_fn)(struct madera *) = NULL; + const struct mfd_cell *mfd_devs; + int n_devs = 0; + int i, ret; + + dev_set_drvdata(madera->dev, madera); + BLOCKING_INIT_NOTIFIER_HEAD(&madera->notifier); + madera_set_micbias_info(madera); + + /* + * We need writable hw config info that all children can share. + * Simplest to take one shared copy of pdata struct. + */ + if (dev_get_platdata(madera->dev)) { + memcpy(&madera->pdata, dev_get_platdata(madera->dev), + sizeof(madera->pdata)); + } + + ret = madera_get_reset_gpio(madera); + if (ret) + return ret; + + regcache_cache_only(madera->regmap, true); + regcache_cache_only(madera->regmap_32bit, true); + + for (i = 0; i < ARRAY_SIZE(madera_core_supplies); i++) + madera->core_supplies[i].supply = madera_core_supplies[i]; + + madera->num_core_supplies = ARRAY_SIZE(madera_core_supplies); + + /* + * On some codecs DCVDD could be supplied by the internal LDO1. + * For those we must add the LDO1 driver before requesting DCVDD + * No devm_ because we need to control shutdown order of children. + */ + switch (madera->type) { + case CS47L35: + case CS47L90: + case CS47L91: + break; + case CS47L85: + case WM1840: + ret = mfd_add_devices(madera->dev, PLATFORM_DEVID_NONE, + madera_ldo1_devs, + ARRAY_SIZE(madera_ldo1_devs), + NULL, 0, NULL); + if (ret) { + dev_err(dev, "Failed to add LDO1 child: %d\n", ret); + return ret; + } + break; + default: + /* No point continuing if the type is unknown */ + dev_err(madera->dev, "Unknown device type %d\n", madera->type); + return -ENODEV; + } + + ret = devm_regulator_bulk_get(dev, madera->num_core_supplies, + madera->core_supplies); + if (ret) { + dev_err(dev, "Failed to request core supplies: %d\n", ret); + goto err_devs; + } + + /* + * Don't use devres here. If the regulator is one of our children it + * will already have been removed before devres cleanup on this mfd + * driver tries to call put() on it. We need control of shutdown order. + */ + madera->dcvdd = regulator_get(madera->dev, "DCVDD"); + if (IS_ERR(madera->dcvdd)) { + ret = PTR_ERR(madera->dcvdd); + dev_err(dev, "Failed to request DCVDD: %d\n", ret); + goto err_devs; + } + + ret = regulator_bulk_enable(madera->num_core_supplies, + madera->core_supplies); + if (ret) { + dev_err(dev, "Failed to enable core supplies: %d\n", ret); + goto err_dcvdd; + } + + ret = regulator_enable(madera->dcvdd); + if (ret) { + dev_err(dev, "Failed to enable DCVDD: %d\n", ret); + goto err_enable; + } + + madera_disable_hard_reset(madera); + + regcache_cache_only(madera->regmap, false); + regcache_cache_only(madera->regmap_32bit, false); + + /* + * Now we can power up and verify that this is a chip we know about + * before we start doing any writes to its registers. + */ + ret = regmap_read(madera->regmap, MADERA_SOFTWARE_RESET, &hwid); + if (ret) { + dev_err(dev, "Failed to read ID register: %d\n", ret); + goto err_reset; + } + + switch (hwid) { + case CS47L35_SILICON_ID: + if (IS_ENABLED(CONFIG_MFD_CS47L35)) { + switch (madera->type) { + case CS47L35: + patch_fn = cs47l35_patch; + mfd_devs = cs47l35_devs; + n_devs = ARRAY_SIZE(cs47l35_devs); + break; + default: + break; + } + } + break; + case CS47L85_SILICON_ID: + if (IS_ENABLED(CONFIG_MFD_CS47L85)) { + switch (madera->type) { + case CS47L85: + case WM1840: + patch_fn = cs47l85_patch; + mfd_devs = cs47l85_devs; + n_devs = ARRAY_SIZE(cs47l85_devs); + break; + default: + break; + } + } + break; + case CS47L90_SILICON_ID: + if (IS_ENABLED(CONFIG_MFD_CS47L90)) { + switch (madera->type) { + case CS47L90: + case CS47L91: + patch_fn = cs47l90_patch; + mfd_devs = cs47l90_devs; + n_devs = ARRAY_SIZE(cs47l90_devs); + break; + default: + break; + } + } + break; + default: + dev_err(madera->dev, "Unknown device ID: %x\n", hwid); + ret = -EINVAL; + goto err_reset; + } + + if (!n_devs) { + dev_err(madera->dev, "Device ID 0x%x not a %s\n", hwid, + madera->type_name); + ret = -ENODEV; + goto err_reset; + } + + /* + * It looks like a device we support. If we don't have a hard reset + * we can now attempt a soft reset. + */ + if (!madera->pdata.reset) { + ret = madera_soft_reset(madera); + if (ret) + goto err_reset; + } + + ret = madera_wait_for_boot(madera); + if (ret) { + dev_err(madera->dev, "Device failed initial boot: %d\n", ret); + goto err_reset; + } + + ret = regmap_read(madera->regmap, MADERA_HARDWARE_REVISION, + &madera->rev); + if (ret) { + dev_err(dev, "Failed to read revision register: %d\n", ret); + goto err_reset; + } + madera->rev &= MADERA_HW_REVISION_MASK; + + dev_info(dev, "%s silicon revision %d\n", madera->type_name, + madera->rev); + + /* Apply hardware patch */ + if (patch_fn) { + ret = patch_fn(madera); + if (ret) { + dev_err(madera->dev, "Failed to apply patch %d\n", ret); + goto err_reset; + } + } + + /* Init 32k clock sourced from MCLK2 */ + ret = regmap_update_bits(madera->regmap, + MADERA_CLOCK_32K_1, + MADERA_CLK_32K_ENA_MASK | MADERA_CLK_32K_SRC_MASK, + MADERA_CLK_32K_ENA | MADERA_32KZ_MCLK2); + if (ret) { + dev_err(madera->dev, "Failed to init 32k clock: %d\n", ret); + goto err_reset; + } + + pm_runtime_set_active(madera->dev); + pm_runtime_enable(madera->dev); + pm_runtime_set_autosuspend_delay(madera->dev, 100); + pm_runtime_use_autosuspend(madera->dev); + + /* No devm_ because we need to control shutdown order of children */ + ret = mfd_add_devices(madera->dev, PLATFORM_DEVID_NONE, + mfd_devs, n_devs, + NULL, 0, NULL); + if (ret) { + dev_err(madera->dev, "Failed to add subdevices: %d\n", ret); + goto err_pm_runtime; + } + + return 0; + +err_pm_runtime: + pm_runtime_disable(madera->dev); +err_reset: + madera_enable_hard_reset(madera); + regulator_disable(madera->dcvdd); +err_enable: + regulator_bulk_disable(madera->num_core_supplies, + madera->core_supplies); +err_dcvdd: + regulator_put(madera->dcvdd); +err_devs: + mfd_remove_devices(dev); + + return ret; +} +EXPORT_SYMBOL_GPL(madera_dev_init); + +int madera_dev_exit(struct madera *madera) +{ + /* Prevent any IRQs being serviced while we clean up */ + disable_irq(madera->irq); + + /* + * DCVDD could be supplied by a child node, we must disable it before + * removing the children, and prevent PM runtime from turning it back on + */ + pm_runtime_disable(madera->dev); + + regulator_disable(madera->dcvdd); + regulator_put(madera->dcvdd); + + mfd_remove_devices(madera->dev); + madera_enable_hard_reset(madera); + + regulator_bulk_disable(madera->num_core_supplies, + madera->core_supplies); + return 0; +} +EXPORT_SYMBOL_GPL(madera_dev_exit); + +MODULE_DESCRIPTION("Madera core MFD driver"); +MODULE_AUTHOR("Richard Fitzgerald <rf@xxxxxxxxxxxxxxxxxxxxx>"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/mfd/madera-i2c.c b/drivers/mfd/madera-i2c.c new file mode 100644 index 000000000000..05ae94be01d8 --- /dev/null +++ b/drivers/mfd/madera-i2c.c @@ -0,0 +1,140 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * I2C bus interface to Cirrus Logic Madera codecs + * + * Copyright (C) 2015-2018 Cirrus Logic + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by the + * Free Software Foundation; version 2. + */ + +#include <linux/device.h> +#include <linux/err.h> +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include <linux/regmap.h> + +#include <linux/mfd/madera/core.h> + +#include "madera.h" + +static int madera_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + struct madera *madera; + const struct regmap_config *regmap_16bit_config = NULL; + const struct regmap_config *regmap_32bit_config = NULL; + const void *of_data; + unsigned long type; + const char *name; + int ret; + + of_data = of_device_get_match_data(&i2c->dev); + if (of_data) + type = (unsigned long)of_data; + else + type = id->driver_data; + + switch (type) { + case CS47L35: + if (IS_ENABLED(CONFIG_MFD_CS47L35)) { + regmap_16bit_config = &cs47l35_16bit_i2c_regmap; + regmap_32bit_config = &cs47l35_32bit_i2c_regmap; + } + break; + case CS47L85: + case WM1840: + if (IS_ENABLED(CONFIG_MFD_CS47L85)) { + regmap_16bit_config = &cs47l85_16bit_i2c_regmap; + regmap_32bit_config = &cs47l85_32bit_i2c_regmap; + } + break; + case CS47L90: + case CS47L91: + if (IS_ENABLED(CONFIG_MFD_CS47L90)) { + regmap_16bit_config = &cs47l90_16bit_i2c_regmap; + regmap_32bit_config = &cs47l90_32bit_i2c_regmap; + } + break; + default: + dev_err(&i2c->dev, + "Unknown Madera I2C device type %ld\n", type); + return -EINVAL; + } + + name = madera_name_from_type(type); + + if (!regmap_16bit_config) { + /* it's polite to say which codec isn't built into the kernel */ + dev_err(&i2c->dev, + "Kernel does not include support for %s\n", name); + return -EINVAL; + } + + madera = devm_kzalloc(&i2c->dev, sizeof(*madera), GFP_KERNEL); + if (!madera) + return -ENOMEM; + + + madera->regmap = devm_regmap_init_i2c(i2c, regmap_16bit_config); + if (IS_ERR(madera->regmap)) { + ret = PTR_ERR(madera->regmap); + dev_err(&i2c->dev, + "Failed to allocate 16-bit register map: %d\n", ret); + return ret; + } + + madera->regmap_32bit = devm_regmap_init_i2c(i2c, regmap_32bit_config); + if (IS_ERR(madera->regmap_32bit)) { + ret = PTR_ERR(madera->regmap_32bit); + dev_err(&i2c->dev, + "Failed to allocate 32-bit register map: %d\n", ret); + return ret; + } + + madera->type = type; + madera->type_name = name; + madera->dev = &i2c->dev; + madera->irq = i2c->irq; + + return madera_dev_init(madera); +} + +static int madera_i2c_remove(struct i2c_client *i2c) +{ + struct madera *madera = dev_get_drvdata(&i2c->dev); + + madera_dev_exit(madera); + + return 0; +} + +static const struct i2c_device_id madera_i2c_id[] = { + { "cs47l35", CS47L35 }, + { "cs47l85", CS47L85 }, + { "cs47l90", CS47L90 }, + { "cs47l91", CS47L91 }, + { "wm1840", WM1840 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, madera_i2c_id); + +static struct i2c_driver madera_i2c_driver = { + .driver = { + .name = "madera", + .pm = &madera_pm_ops, + .of_match_table = of_match_ptr(madera_of_match), + }, + .probe = madera_i2c_probe, + .remove = madera_i2c_remove, + .id_table = madera_i2c_id, +}; + +module_i2c_driver(madera_i2c_driver); + +MODULE_DESCRIPTION("Madera I2C bus interface"); +MODULE_AUTHOR("Richard Fitzgerald <rf@xxxxxxxxxxxxxxxxxxxxx>"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/mfd/madera-spi.c b/drivers/mfd/madera-spi.c new file mode 100644 index 000000000000..4c398b278bba --- /dev/null +++ b/drivers/mfd/madera-spi.c @@ -0,0 +1,139 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * SPI bus interface to Cirrus Logic Madera codecs + * + * Copyright (C) 2015-2018 Cirrus Logic + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by the + * Free Software Foundation; version 2. + */ + +#include <linux/device.h> +#include <linux/err.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include <linux/regmap.h> +#include <linux/spi/spi.h> + +#include <linux/mfd/madera/core.h> + +#include "madera.h" + +static int madera_spi_probe(struct spi_device *spi) +{ + const struct spi_device_id *id = spi_get_device_id(spi); + struct madera *madera; + const struct regmap_config *regmap_16bit_config = NULL; + const struct regmap_config *regmap_32bit_config = NULL; + const void *of_data; + unsigned long type; + const char *name; + int ret; + + of_data = of_device_get_match_data(&spi->dev); + if (of_data) + type = (unsigned long)of_data; + else + type = id->driver_data; + + switch (type) { + case CS47L35: + if (IS_ENABLED(CONFIG_MFD_CS47L35)) { + regmap_16bit_config = &cs47l35_16bit_spi_regmap; + regmap_32bit_config = &cs47l35_32bit_spi_regmap; + } + break; + case CS47L85: + case WM1840: + if (IS_ENABLED(CONFIG_MFD_CS47L85)) { + regmap_16bit_config = &cs47l85_16bit_spi_regmap; + regmap_32bit_config = &cs47l85_32bit_spi_regmap; + } + break; + case CS47L90: + case CS47L91: + if (IS_ENABLED(CONFIG_MFD_CS47L90)) { + regmap_16bit_config = &cs47l90_16bit_spi_regmap; + regmap_32bit_config = &cs47l90_32bit_spi_regmap; + } + break; + default: + dev_err(&spi->dev, + "Unknown Madera SPI device type %ld\n", type); + return -EINVAL; + } + + name = madera_name_from_type(type); + + if (!regmap_16bit_config) { + /* it's polite to say which codec isn't built into the kernel */ + dev_err(&spi->dev, + "Kernel does not include support for %s\n", name); + return -EINVAL; + } + + madera = devm_kzalloc(&spi->dev, sizeof(*madera), GFP_KERNEL); + if (!madera) + return -ENOMEM; + + madera->regmap = devm_regmap_init_spi(spi, regmap_16bit_config); + if (IS_ERR(madera->regmap)) { + ret = PTR_ERR(madera->regmap); + dev_err(&spi->dev, + "Failed to allocate 16-bit register map: %d\n", ret); + return ret; + } + + madera->regmap_32bit = devm_regmap_init_spi(spi, regmap_32bit_config); + if (IS_ERR(madera->regmap_32bit)) { + ret = PTR_ERR(madera->regmap_32bit); + dev_err(&spi->dev, + "Failed to allocate 32-bit register map: %d\n", ret); + return ret; + } + + madera->type = type; + madera->type_name = name; + madera->dev = &spi->dev; + madera->irq = spi->irq; + + return madera_dev_init(madera); +} + +static int madera_spi_remove(struct spi_device *spi) +{ + struct madera *madera = spi_get_drvdata(spi); + + madera_dev_exit(madera); + + return 0; +} + +static const struct spi_device_id madera_spi_ids[] = { + { "cs47l35", CS47L35 }, + { "cs47l85", CS47L85 }, + { "cs47l90", CS47L90 }, + { "cs47l91", CS47L91 }, + { "wm1840", WM1840 }, + { } +}; +MODULE_DEVICE_TABLE(spi, madera_spi_ids); + +static struct spi_driver madera_spi_driver = { + .driver = { + .name = "madera", + .pm = &madera_pm_ops, + .of_match_table = of_match_ptr(madera_of_match), + }, + .probe = madera_spi_probe, + .remove = madera_spi_remove, + .id_table = madera_spi_ids, +}; + +module_spi_driver(madera_spi_driver); + +MODULE_DESCRIPTION("Madera SPI bus interface"); +MODULE_AUTHOR("Richard Fitzgerald <rf@xxxxxxxxxxxxxxxxxxxxx>"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/mfd/madera.h b/drivers/mfd/madera.h new file mode 100644 index 000000000000..891b84efb9a7 --- /dev/null +++ b/drivers/mfd/madera.h @@ -0,0 +1,44 @@ +/* + * MFD internals for Cirrus Logic Madera codecs + * + * Copyright 2015-2018 Cirrus Logic + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef MADERA_MFD_H +#define MADERA_MFD_H + +#include <linux/of.h> +#include <linux/pm.h> + +struct madera; + +extern const struct dev_pm_ops madera_pm_ops; +extern const struct of_device_id madera_of_match[]; + +int madera_dev_init(struct madera *madera); +int madera_dev_exit(struct madera *madera); + +const char *madera_name_from_type(enum madera_type type); + +extern const struct regmap_config cs47l35_16bit_spi_regmap; +extern const struct regmap_config cs47l35_32bit_spi_regmap; +extern const struct regmap_config cs47l35_16bit_i2c_regmap; +extern const struct regmap_config cs47l35_32bit_i2c_regmap; +int cs47l35_patch(struct madera *madera); + +extern const struct regmap_config cs47l85_16bit_spi_regmap; +extern const struct regmap_config cs47l85_32bit_spi_regmap; +extern const struct regmap_config cs47l85_16bit_i2c_regmap; +extern const struct regmap_config cs47l85_32bit_i2c_regmap; +int cs47l85_patch(struct madera *madera); + +extern const struct regmap_config cs47l90_16bit_spi_regmap; +extern const struct regmap_config cs47l90_32bit_spi_regmap; +extern const struct regmap_config cs47l90_16bit_i2c_regmap; +extern const struct regmap_config cs47l90_32bit_i2c_regmap; +int cs47l90_patch(struct madera *madera); +#endif diff --git a/include/linux/mfd/madera/core.h b/include/linux/mfd/madera/core.h new file mode 100644 index 000000000000..c332681848ef --- /dev/null +++ b/include/linux/mfd/madera/core.h @@ -0,0 +1,187 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * MFD internals for Cirrus Logic Madera codecs + * + * Copyright (C) 2015-2018 Cirrus Logic + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by the + * Free Software Foundation; version 2. + */ + +#ifndef MADERA_CORE_H +#define MADERA_CORE_H + +#include <linux/gpio/consumer.h> +#include <linux/interrupt.h> +#include <linux/mfd/madera/pdata.h> +#include <linux/notifier.h> +#include <linux/regmap.h> +#include <linux/regulator/consumer.h> + +enum madera_type { + /* 0 is reserved for indicating failure to identify */ + CS47L35 = 1, + CS47L85 = 2, + CS47L90 = 3, + CS47L91 = 4, + WM1840 = 7, +}; + +#define MADERA_MAX_CORE_SUPPLIES 2 +#define MADERA_MAX_GPIOS 40 + +#define CS47L35_NUM_GPIOS 16 +#define CS47L85_NUM_GPIOS 40 +#define CS47L90_NUM_GPIOS 38 + +#define MADERA_MAX_MICBIAS 4 + +/* Notifier events */ +#define MADERA_NOTIFY_VOICE_TRIGGER 0x1 +#define MADERA_NOTIFY_HPDET 0x2 +#define MADERA_NOTIFY_MICDET 0x4 + +/* GPIO Function Definitions */ +#define MADERA_GP_FN_ALTERNATE 0x00 +#define MADERA_GP_FN_GPIO 0x01 +#define MADERA_GP_FN_DSP_GPIO 0x02 +#define MADERA_GP_FN_IRQ1 0x03 +#define MADERA_GP_FN_IRQ2 0x04 +#define MADERA_GP_FN_FLL1_CLOCK 0x10 +#define MADERA_GP_FN_FLL2_CLOCK 0x11 +#define MADERA_GP_FN_FLL3_CLOCK 0x12 +#define MADERA_GP_FN_FLLAO_CLOCK 0x13 +#define MADERA_GP_FN_FLL1_LOCK 0x18 +#define MADERA_GP_FN_FLL2_LOCK 0x19 +#define MADERA_GP_FN_FLL3_LOCK 0x1A +#define MADERA_GP_FN_FLLAO_LOCK 0x1B +#define MADERA_GP_FN_OPCLK_OUT 0x40 +#define MADERA_GP_FN_OPCLK_ASYNC_OUT 0x41 +#define MADERA_GP_FN_PWM1 0x48 +#define MADERA_GP_FN_PWM2 0x49 +#define MADERA_GP_FN_SPDIF_OUT 0x4C +#define MADERA_GP_FN_HEADPHONE_DET 0x50 +#define MADERA_GP_FN_MIC_DET 0x58 +#define MADERA_GP_FN_DRC1_SIGNAL_DETECT 0x80 +#define MADERA_GP_FN_DRC2_SIGNAL_DETECT 0x81 +#define MADERA_GP_FN_ASRC1_IN1_LOCK 0x88 +#define MADERA_GP_FN_ASRC1_IN2_LOCK 0x89 +#define MADERA_GP_FN_ASRC2_IN1_LOCK 0x8A +#define MADERA_GP_FN_ASRC2_IN2_LOCK 0x8B +#define MADERA_GP_FN_DSP_IRQ1 0xA0 +#define MADERA_GP_FN_DSP_IRQ2 0xA1 +#define MADERA_GP_FN_DSP_IRQ3 0xA2 +#define MADERA_GP_FN_DSP_IRQ4 0xA3 +#define MADERA_GP_FN_DSP_IRQ5 0xA4 +#define MADERA_GP_FN_DSP_IRQ6 0xA5 +#define MADERA_GP_FN_DSP_IRQ7 0xA6 +#define MADERA_GP_FN_DSP_IRQ8 0xA7 +#define MADERA_GP_FN_DSP_IRQ9 0xA8 +#define MADERA_GP_FN_DSP_IRQ10 0xA9 +#define MADERA_GP_FN_DSP_IRQ11 0xAA +#define MADERA_GP_FN_DSP_IRQ12 0xAB +#define MADERA_GP_FN_DSP_IRQ13 0xAC +#define MADERA_GP_FN_DSP_IRQ14 0xAD +#define MADERA_GP_FN_DSP_IRQ15 0xAE +#define MADERA_GP_FN_DSP_IRQ16 0xAF +#define MADERA_GP_FN_HPOUT1L_SC 0xB0 +#define MADERA_GP_FN_HPOUT1R_SC 0xB1 +#define MADERA_GP_FN_HPOUT2L_SC 0xB2 +#define MADERA_GP_FN_HPOUT2R_SC 0xB3 +#define MADERA_GP_FN_HPOUT3L_SC 0xB4 +#define MADERA_GP_FN_HPOUT4R_SC 0xB5 +#define MADERA_GP_FN_SPKOUTL_SC 0xB6 +#define MADERA_GP_FN_SPKOUTR_SC 0xB7 +#define MADERA_GP_FN_HPOUT1L_ENA 0xC0 +#define MADERA_GP_FN_HPOUT1R_ENA 0xC1 +#define MADERA_GP_FN_HPOUT2L_ENA 0xC2 +#define MADERA_GP_FN_HPOUT2R_ENA 0xC3 +#define MADERA_GP_FN_HPOUT3L_ENA 0xC4 +#define MADERA_GP_FN_HPOUT4R_ENA 0xC5 +#define MADERA_GP_FN_SPKOUTL_ENA 0xC6 +#define MADERA_GP_FN_SPKOUTR_ENA 0xC7 +#define MADERA_GP_FN_HPOUT1L_DIS 0xD0 +#define MADERA_GP_FN_HPOUT1R_DIS 0xD1 +#define MADERA_GP_FN_HPOUT2L_DIS 0xD2 +#define MADERA_GP_FN_HPOUT2R_DIS 0xD3 +#define MADERA_GP_FN_HPOUT3L_DIS 0xD4 +#define MADERA_GP_FN_HPOUT4R_DIS 0xD5 +#define MADERA_GP_FN_SPKOUTL_DIS 0xD6 +#define MADERA_GP_FN_SPKOUTR_DIS 0xD7 +#define MADERA_GP_FN_SPK_SHUTDOWN 0xE0 +#define MADERA_GP_FN_SPK_OVH_SHUTDOWN 0xE1 +#define MADERA_GP_FN_SPK_OVH_WARN 0xE2 +#define MADERA_GP_FN_TIMER1_STATUS 0x140 +#define MADERA_GP_FN_TIMER2_STATUS 0x141 +#define MADERA_GP_FN_TIMER3_STATUS 0x142 +#define MADERA_GP_FN_TIMER4_STATUS 0x143 +#define MADERA_GP_FN_TIMER5_STATUS 0x144 +#define MADERA_GP_FN_TIMER6_STATUS 0x145 +#define MADERA_GP_FN_TIMER7_STATUS 0x146 +#define MADERA_GP_FN_TIMER8_STATUS 0x147 +#define MADERA_GP_FN_EVENTLOG1_FIFO_STS 0x150 +#define MADERA_GP_FN_EVENTLOG2_FIFO_STS 0x151 +#define MADERA_GP_FN_EVENTLOG3_FIFO_STS 0x152 +#define MADERA_GP_FN_EVENTLOG4_FIFO_STS 0x153 +#define MADERA_GP_FN_EVENTLOG5_FIFO_STS 0x154 +#define MADERA_GP_FN_EVENTLOG6_FIFO_STS 0x155 +#define MADERA_GP_FN_EVENTLOG7_FIFO_STS 0x156 +#define MADERA_GP_FN_EVENTLOG8_FIFO_STS 0x157 + +struct snd_soc_dapm_context; + +/* + * struct madera - internal data shared by the set of Madera drivers + * + * This should not be used by anything except child drivers of the Madera MFD + * + * @regmap: pointer to the regmap instance for 16-bit registers + * @regmap_32bit: pointer to the regmap instance for 32-bit registers + * @dev: pointer to the MFD device + * @type: type of codec + * @rev: silicon revision + * @type_name: display name of this codec + * @num_core_supplies: number of core supply regulators + * @core_supplies: list of core supplies that are always required + * @dcvdd: pointer to DCVDD regulator + * @internal_dcvdd: true if DCVDD is supplied from the internal LDO1 + * @pdata: our pdata + * @irq_dev: the irqchip child driver device + * @irq: host irq number from SPI or I2C configuration + * @out_clamp: indicates output clamp state for each analogue output + * @out_shorted: indicates short circuit state for each analogue output + * @hp_ena: bitflags of enable state for the headphone outputs + * @num_micbias: number of MICBIAS outputs + * @num_childbias: number of child biases for each MICBIAS + * @dapm: pointer to codec driver DAPM context + * @notifier: notifier for signalling events to ASoC machine driver + */ +struct madera { + struct regmap *regmap; + struct regmap *regmap_32bit; + + struct device *dev; + + enum madera_type type; + unsigned int rev; + const char *type_name; + + int num_core_supplies; + struct regulator_bulk_data core_supplies[MADERA_MAX_CORE_SUPPLIES]; + struct regulator *dcvdd; + bool internal_dcvdd; + + struct madera_pdata pdata; + + struct device *irq_dev; + int irq; + + unsigned int num_micbias; + unsigned int num_childbias[MADERA_MAX_MICBIAS]; + + struct snd_soc_dapm_context *dapm; + + struct blocking_notifier_head notifier; +}; +#endif diff --git a/include/linux/mfd/madera/pdata.h b/include/linux/mfd/madera/pdata.h new file mode 100644 index 000000000000..0b311f39c8f4 --- /dev/null +++ b/include/linux/mfd/madera/pdata.h @@ -0,0 +1,59 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Platform data for Cirrus Logic Madera codecs + * + * Copyright (C) 2015-2018 Cirrus Logic + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by the + * Free Software Foundation; version 2. + */ + +#ifndef MADERA_PDATA_H +#define MADERA_PDATA_H + +#include <linux/kernel.h> +#include <linux/regulator/arizona-ldo1.h> +#include <linux/regulator/arizona-micsupp.h> +#include <linux/regulator/machine.h> + +#define MADERA_MAX_MICBIAS 4 +#define MADERA_MAX_CHILD_MICBIAS 4 + +#define MADERA_MAX_GPSW 2 + +struct gpio_desc; +struct pinctrl_map; +struct madera_irqchip_pdata; +struct madera_codec_pdata; + +/** + * struct madera_pdata - Configuration data for Madera devices + * + * @reset: GPIO controlling /RESET (NULL = none) + * @ldo1: Substruct of pdata for the LDO1 regulator + * @micvdd: Substruct of pdata for the MICVDD regulator + * @irq_flags: Mode for primary IRQ (defaults to active low) + * @gpio_base: Base GPIO number + * @gpio_configs: Array of GPIO configurations (See Documentation/pinctrl.txt) + * @n_gpio_configs: Number of entries in gpio_configs + * @gpsw: General purpose switch mode setting. Depends on the external + * hardware connected to the switch. (See the SW1_MODE field + * in the datasheet for the available values for your codec) + */ +struct madera_pdata { + struct gpio_desc *reset; + + struct arizona_ldo1_pdata ldo1; + struct arizona_micsupp_pdata micvdd; + + unsigned int irq_flags; + int gpio_base; + + const struct pinctrl_map *gpio_configs; + int n_gpio_configs; + + u32 gpsw[MADERA_MAX_GPSW]; +}; + +#endif -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
