On Fri, 28 Jul 2017, Richard Fitzgerald wrote: > 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@xxxxxxxxxxxxxxxxxxxxxxxxxxx> > Signed-off-by: Nikesh Oswal <Nikesh.Oswal@xxxxxxxxxxxxxxxx> > Signed-off-by: Richard Fitzgerald <rf@xxxxxxxxxxxxxxxxxxxxxxxxxxx> > --- > Changes since V3: > - Fixed missing Kconfig dependency on PINCTRL > - commented purpose of madera_name_from_type(), call it earlier > in probe and store the string in a member of struct madera > - removed the madera_get_num_micbias and madera_get_num_childbias > exported functions and introduced static madera_set_micbias_info > to init this information in members of struct madera > - adjusted the commenting on the switch that adds the LDO1 child driver > - squashed the two switches on hardware ID into one (we used to re-read > the HWID after reset hence the second switch on it but as we don't do > that now the two switches can be combined) > - pre-init ret to remove the else ret = 0 in madera_get_reset_gpio > > Changes not made to V3 review comments: > - left the dev_dbg messages in runtime_suspend and runtime_resume, > they are only _dbg and they've been useful in the past for debugging > MAINTAINERS | 3 + > drivers/mfd/Kconfig | 27 ++ > drivers/mfd/Makefile | 4 + > drivers/mfd/madera-core.c | 611 +++++++++++++++++++++++++++++++++++++++ > drivers/mfd/madera-i2c.c | 135 +++++++++ > drivers/mfd/madera-spi.c | 135 +++++++++ > drivers/mfd/madera.h | 54 ++++ > include/linux/mfd/madera/core.h | 179 ++++++++++++ > include/linux/mfd/madera/pdata.h | 61 ++++ > 9 files changed, 1209 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 f70d218..f335b2a 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -3376,7 +3376,10 @@ L: patches@xxxxxxxxxxxxxxxxxxxxxxxxxxx > 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 94ad2c1..9ca7174 100644 > --- a/drivers/mfd/Kconfig > +++ b/drivers/mfd/Kconfig > @@ -208,6 +208,33 @@ config MFD_CROS_EC_SPI > response time cannot be guaranteed, we support ignoring > 'pre-amble' bytes before the response actually starts. > > +config MFD_MADERA > + bool > + select MFD_CORE > + select REGMAP > + select REGMAP_IRQ > + select MADERA_IRQ > + > +config MFD_MADERA_I2C > + bool "Cirrus Logic Madera codecs with I2C" > + select MFD_MADERA > + select REGMAP_I2C > + depends on I2C > + depends on PINCTRL > + help > + Support for the Cirrus Logic Madera platform audio SoC > + core functionality controlled via I2C. > + > +config MFD_MADERA_SPI > + bool "Cirrus Logic Madera codecs with SPI" > + select MFD_MADERA > + select REGMAP_SPI > + depends on SPI_MASTER > + depends on PINCTRL > + 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 080793b..71c658a 100644 > --- a/drivers/mfd/Makefile > +++ b/drivers/mfd/Makefile > @@ -73,6 +73,10 @@ obj-$(CONFIG_MFD_WM8350_I2C) += wm8350-i2c.o > wm8994-objs := wm8994-core.o wm8994-irq.o wm8994-regmap.o > obj-$(CONFIG_MFD_WM8994) += wm8994.o > > +obj-$(CONFIG_MFD_MADERA) += madera-core.o > +obj-$(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 0000000..2d83a57 > --- /dev/null > +++ b/drivers/mfd/madera-core.c > @@ -0,0 +1,611 @@ > +/* > + * Core MFD support for Cirrus Logic Madera codecs > + * > + * Copyright 2015-2017 Cirrus Logic No author? > + * 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. > + */ > + > +#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_device.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->reset_gpio) > + gpiod_set_value_cansleep(madera->reset_gpio, 0); > +} > + > +static void madera_disable_hard_reset(struct madera *madera) > +{ > + if (madera->reset_gpio) { > + gpiod_set_value_cansleep(madera->reset_gpio, 1); > + usleep_range(1000, 2000); > + } > +} > + > +#ifdef CONFIG_PM > +static int 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 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; > +} > +#endif > + > +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); > + > +#ifdef CONFIG_OF > +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); > + > +unsigned long madera_get_type_from_of(struct device *dev) > +{ > + const struct of_device_id *id = of_match_device(madera_of_match, dev); > + > + if (id) > + return (unsigned long)id->data; > + else > + return 0; > +} > +EXPORT_SYMBOL_GPL(madera_get_type_from_of); I think this costs more lines than it saves. Just do this in both the I2C and SPI files. > +#endif > + > +static int madera_get_reset_gpio(struct madera *madera) > +{ > + int ret = 0; > + > + /* We use 0 in pdata to indicate a GPIO has not been set */ > + if (dev_get_platdata(madera->dev) && (madera->pdata.reset > 0)) { > + /* Start out with /RESET asserted */ > + ret = devm_gpio_request_one(madera->dev, > + madera->pdata.reset, > + GPIOF_DIR_OUT | GPIOF_INIT_LOW, > + "madera reset"); > + if (!ret) > + madera->reset_gpio = gpio_to_desc(madera->pdata.reset); > + } else { > + madera->reset_gpio = devm_gpiod_get_optional(madera->dev, > + "reset", > + GPIOD_OUT_LOW); > + if (IS_ERR(madera->reset_gpio)) > + ret = PTR_ERR(madera->reset_gpio); > + } > + > + if (ret == -EPROBE_DEFER) > + return ret; > + > + if (ret) { > + dev_err(madera->dev, "Failed to request /RESET: %d\n", ret); > + return ret; > + } > + > + if (!madera->reset_gpio) > + dev_warn(madera->dev, > + "Running without reset GPIO is not recommended\n"); > + > + return 0; > +} > + > +static void madera_set_micbias_info(struct madera *madera) > +{ > + /* > + * childbias is an array because future codecs can have different > + * childbiases for each micbias > + */ > + 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; > + 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); > + > + 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 > + */ > + 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 */ Nit: s/no/No/ > + 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 because the only device we have to get > + * against is the MFD device and DCVDD will likely be supplied by > + * one of its children. Meaning that the regulator will be > + * destroyed by the time devres calls regulator put. > + */ > + madera->dcvdd = regulator_get_exclusive(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); > + > + /* > + * Verify that this is a chip we know about before we > + * starting 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->reset_gpio) { > + 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); > + > + 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); > diff --git a/drivers/mfd/madera-i2c.c b/drivers/mfd/madera-i2c.c > new file mode 100644 > index 0000000..80c2304 > --- /dev/null > +++ b/drivers/mfd/madera-i2c.c > @@ -0,0 +1,135 @@ > +/* > + * I2C bus interface to Cirrus Logic Madera codecs > + * > + * Copyright 2015-2017 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. > + */ > + > +#include <linux/device.h> > +#include <linux/err.h> > +#include <linux/i2c.h> > +#include <linux/module.h> > +#include <linux/regmap.h> > +#include <linux/of.h> Nit: Alphabetical. > +#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; > + unsigned long type; > + const char *name; > + int ret; > + > + if (i2c->dev.of_node) > + type = madera_get_type_from_of(&i2c->dev); > + 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) { > + 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@xxxxxxxxxxxxxxxxxxxxxxxxxxx>"); > +MODULE_LICENSE("GPL v2"); > diff --git a/drivers/mfd/madera-spi.c b/drivers/mfd/madera-spi.c > new file mode 100644 > index 0000000..1252c59 > --- /dev/null > +++ b/drivers/mfd/madera-spi.c > @@ -0,0 +1,135 @@ > +/* > + * SPI bus interface to Cirrus Logic Madera codecs > + * > + * Copyright 2015-2017 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. > + */ > + > +#include <linux/device.h> > +#include <linux/err.h> > +#include <linux/module.h> > +#include <linux/regmap.h> > +#include <linux/of.h> > +#include <linux/spi/spi.h> Nit: Alphabetical. > +#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; > + unsigned long type; > + const char *name; > + int ret; > + > + if (spi->dev.of_node) > + type = madera_get_type_from_of(&spi->dev); > + 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) { > + 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", > + .owner = THIS_MODULE, Is this required for SPI still? > + .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@xxxxxxxxxxxxxxxxxxxxxxxxxxx>"); > +MODULE_LICENSE("GPL v2"); > diff --git a/drivers/mfd/madera.h b/drivers/mfd/madera.h > new file mode 100644 > index 0000000..645cba7 > --- /dev/null > +++ b/drivers/mfd/madera.h > @@ -0,0 +1,54 @@ > +/* > + * MFD internals for Cirrus Logic Madera codecs > + * > + * Copyright 2015-2017 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); > + > +#ifdef CONFIG_OF > +unsigned long madera_get_type_from_of(struct device *dev); > +#else > +static inline unsigned long madera_get_type_from_of(struct device *dev) > +{ > + return 0; > +} > +#endif Remove this, I don't think it add much (anything?) > +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 0000000..21ac543 > --- /dev/null > +++ b/include/linux/mfd/madera/core.h > @@ -0,0 +1,179 @@ > +/* > + * MFD internals for Cirrus Logic Madera codecs > + * > + * Copyright 2015-2017 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_CORE_H > +#define MADERA_CORE_H > + > +#include <linux/interrupt.h> > +#include <linux/notifier.h> > +#include <linux/regmap.h> > +#include <linux/gpio/consumer.h> > +#include <linux/irqchip/irq-madera.h> > +#include <linux/mfd/madera/pdata.h> > +#include <linux/regulator/consumer.h> > +#include <sound/madera-pdata.h> Nit: Alphabetical. > +enum madera_type { > + 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 > + * > + * This should not be used by anything except child drivers of the Madera MFD > + */ > +struct madera { > + struct regmap *regmap; > + struct regmap *regmap_32bit; > + > + struct device *dev; > + > + enum madera_type type; > + unsigned int rev; > + const char *type_name; > + > + struct gpio_desc *reset_gpio; > + > + 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 out_clamp[MADERA_MAX_OUTPUT]; > + unsigned int out_shorted[MADERA_MAX_OUTPUT]; > + unsigned int hp_ena; > + > + unsigned int num_micbias; > + unsigned int num_childbias[MADERA_MAX_MICBIAS]; > + > + struct snd_soc_dapm_context *dapm; > + > + struct blocking_notifier_head notifier; > +}; I think this deserves a kerneldoc header. > +static inline int madera_call_notifiers(struct madera *madera, > + unsigned long event, > + void *data) > +{ > + return blocking_notifier_call_chain(&madera->notifier, event, data); > +} > +#endif Where is this called from? > diff --git a/include/linux/mfd/madera/pdata.h b/include/linux/mfd/madera/pdata.h > new file mode 100644 > index 0000000..b3af47c > --- /dev/null > +++ b/include/linux/mfd/madera/pdata.h > @@ -0,0 +1,61 @@ > +/* > + * Platform data for Cirrus Logic Madera codecs > + * > + * Copyright 2015-2017 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_PDATA_H > +#define MADERA_PDATA_H > + > +#include <linux/kernel.h> > +#include <linux/irqchip/irq-madera-pdata.h> > +#include <linux/regulator/arizona-ldo1.h> > +#include <linux/regulator/arizona-micsupp.h> > +#include <linux/regulator/machine.h> > +#include <sound/madera-pdata.h> Guess what? > +#define MADERA_MAX_MICBIAS 4 > +#define MADERA_MAX_CHILD_MICBIAS 4 > + > +#define MADERA_MAX_GPSW 2 > + > +struct pinctrl_map; > + > +/** > + * struct madera_pdata - Configuration data for Madera devices > + * > + * @reset: GPIO controlling /RESET (0 = none) > + * @ldo1: Substruct of pdata for the LDO1 regulator > + * @micvdd: Substruct of pdata for the MICVDD regulator > + * @irqchip: Substruct of pdata for the irqchip driver > + * @gpio_base: Base GPIO number > + * @gpio_configs: Array of GPIO configurations (See Documentation/pinctrl.txt) > + * @n_gpio_configs: Number of entries in gpio_configs > + * @codec: Substructure of pdata for the ASoC codec driver > + * See include/sound/madera-pdata.h > + * @gpsw: General purpose switch mode setting (See the SW1_MODE field > + * in the datasheet for the available values for your codec) > + */ > +struct madera_pdata { > + int reset; > + > + struct arizona_ldo1_pdata ldo1; > + struct arizona_micsupp_pdata micvdd; > + > + struct madera_irqchip_pdata irqchip; > + > + int gpio_base; > + > + const struct pinctrl_map *gpio_configs; > + int n_gpio_configs; > + > + struct madera_codec_pdata codec; > + > + u32 gpsw[MADERA_MAX_GPSW]; > +}; > + > +#endif Once you fixed all of my comments, please apply my: For my own reference: Acked-for-MFD-by: Lee Jones <lee.jones@xxxxxxxxxx> -- Lee Jones Linaro STMicroelectronics Landing Team Lead Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog -- 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
