On Thu, Aug 24, 2017 at 11:11 AM, Takashi Iwai <tiwai@xxxxxxx> wrote: > This patch adds the MFD driver for Dollar Cove TI PMIC (ACPI INT33F5) > that is found on some Intel Cherry Trail devices. > The driver is based on the original work by Intel, found at: > https://github.com/01org/ProductionKernelQuilts > > This is a minimal version for adding the basic resources. Currently, > only ACPI PMIC opregion and the external power-button are used. > Reviewed-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx> JFYI, IRQ registers are called as IRQ and MIRQ in datasheet. Though I think we better to be in align with existing drivers. > Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=193891 > Signed-off-by: Takashi Iwai <tiwai@xxxxxxx> > --- > v1->v2: > * Minor cleanups as suggested by Andy > > drivers/mfd/Kconfig | 13 +++ > drivers/mfd/Makefile | 1 + > drivers/mfd/intel_soc_pmic_dc_ti.c | 182 +++++++++++++++++++++++++++++++++++++ > 3 files changed, 196 insertions(+) > create mode 100644 drivers/mfd/intel_soc_pmic_dc_ti.c > > diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig > index 94ad2c1c3d90..28c12bb50c9f 100644 > --- a/drivers/mfd/Kconfig > +++ b/drivers/mfd/Kconfig > @@ -496,6 +496,19 @@ config INTEL_SOC_PMIC_CHTWC > available before any devices using it are probed. This option also > causes the designware-i2c driver to be builtin for the same reason. > > +config INTEL_SOC_PMIC_DC_TI > + tristate "Support for Dollar Cove TI PMIC" > + depends on GPIOLIB > + depends on I2C > + depends on ACPI > + depends on X86 > + select MFD_CORE > + select REGMAP_I2C > + select REGMAP_IRQ > + help > + Select this option for supporting Dollar Cove TI PMIC device that is > + found on some Intel Cherry Trail systems. > + > config MFD_INTEL_LPSS > tristate > select COMMON_CLK > diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile > index 080793b3fd0e..16c4fe519d30 100644 > --- a/drivers/mfd/Makefile > +++ b/drivers/mfd/Makefile > @@ -216,6 +216,7 @@ intel-soc-pmic-objs := intel_soc_pmic_core.o intel_soc_pmic_crc.o > obj-$(CONFIG_INTEL_SOC_PMIC) += intel-soc-pmic.o > obj-$(CONFIG_INTEL_SOC_PMIC_BXTWC) += intel_soc_pmic_bxtwc.o > obj-$(CONFIG_INTEL_SOC_PMIC_CHTWC) += intel_soc_pmic_chtwc.o > +obj-$(CONFIG_INTEL_SOC_PMIC_DC_TI) += intel_soc_pmic_dc_ti.o > obj-$(CONFIG_MFD_MT6397) += mt6397-core.o > > obj-$(CONFIG_MFD_ALTERA_A10SR) += altera-a10sr.o > diff --git a/drivers/mfd/intel_soc_pmic_dc_ti.c b/drivers/mfd/intel_soc_pmic_dc_ti.c > new file mode 100644 > index 000000000000..3ba1625eb44b > --- /dev/null > +++ b/drivers/mfd/intel_soc_pmic_dc_ti.c > @@ -0,0 +1,182 @@ > +/* > + * Device access for Dollar Cove TI PMIC > + * Copyright (c) 2014, Intel Corporation. > + * Author: Ramakrishna Pallala <ramakrishna.pallala@xxxxxxxxx> > + * > + * Cleanup and forward-ported > + * Copyright (c) 2017 Takashi Iwai <tiwai@xxxxxxx> > + */ > + > +#include <linux/acpi.h> > +#include <linux/interrupt.h> > +#include <linux/i2c.h> > +#include <linux/module.h> > +#include <linux/regmap.h> > +#include <linux/mfd/core.h> > +#include <linux/mfd/intel_soc_pmic.h> > + > +#define DC_TI_IRQLVL1 0x01 > +#define DC_TI_MASK_IRQLVL1 0x02 > + > +/* Level 1 IRQs */ > +enum { > + DC_TI_PWRBTN = 0, /* power button */ > + DC_TI_DIETMPWARN, /* thermal */ > + DC_TI_ADCCMPL, /* ADC */ > + /* no irq 3 */ > + DC_TI_VBATLOW = 4, /* battery */ > + DC_TI_VBUSDET, /* power source */ > + /* no irq 6 */ > + DC_TI_CCEOCAL = 7, /* battery */ > +}; > + > +static struct resource power_button_resources[] = { > + DEFINE_RES_IRQ(DC_TI_PWRBTN), > +}; > + > +static struct resource thermal_resources[] = { > + DEFINE_RES_IRQ(DC_TI_DIETMPWARN), > +}; > + > +static struct resource adc_resources[] = { > + DEFINE_RES_IRQ(DC_TI_ADCCMPL), > +}; > + > +static struct resource pwrsrc_resources[] = { > + DEFINE_RES_IRQ(DC_TI_VBUSDET), > +}; > + > +static struct resource battery_resources[] = { > + DEFINE_RES_IRQ(DC_TI_VBATLOW), > + DEFINE_RES_IRQ(DC_TI_CCEOCAL), > +}; > + > +static struct mfd_cell dc_ti_dev[] = { > + { > + .name = "dc_ti_pwrbtn", > + .num_resources = ARRAY_SIZE(power_button_resources), > + .resources = power_button_resources, > + }, > + { > + .name = "dc_ti_adc", > + .num_resources = ARRAY_SIZE(adc_resources), > + .resources = adc_resources, > + }, > + { > + .name = "dc_ti_thermal", > + .num_resources = ARRAY_SIZE(thermal_resources), > + .resources = thermal_resources, > + }, > + { > + .name = "dc_ti_pwrsrc", > + .num_resources = ARRAY_SIZE(pwrsrc_resources), > + .resources = pwrsrc_resources, > + }, > + { > + .name = "dc_ti_battery", > + .num_resources = ARRAY_SIZE(battery_resources), > + .resources = battery_resources, > + }, > + { > + .name = "dc_ti_region", > + }, > +}; > + > +static const struct regmap_config dc_ti_regmap_config = { > + .reg_bits = 8, > + .val_bits = 8, > + .max_register = 128, > + .cache_type = REGCACHE_NONE, > +}; > + > +static const struct regmap_irq dc_ti_irqs[] = { > + REGMAP_IRQ_REG(DC_TI_PWRBTN, 0, BIT(DC_TI_PWRBTN)), > + REGMAP_IRQ_REG(DC_TI_DIETMPWARN, 0, BIT(DC_TI_DIETMPWARN)), > + REGMAP_IRQ_REG(DC_TI_ADCCMPL, 0, BIT(DC_TI_ADCCMPL)), > + REGMAP_IRQ_REG(DC_TI_VBATLOW, 0, BIT(DC_TI_VBATLOW)), > + REGMAP_IRQ_REG(DC_TI_VBUSDET, 0, BIT(DC_TI_VBUSDET)), > + REGMAP_IRQ_REG(DC_TI_CCEOCAL, 0, BIT(DC_TI_CCEOCAL)), > +}; > + > +static const struct regmap_irq_chip dc_ti_irq_chip = { > + .name = KBUILD_MODNAME, > + .irqs = dc_ti_irqs, > + .num_irqs = ARRAY_SIZE(dc_ti_irqs), > + .num_regs = 1, > + .status_base = DC_TI_IRQLVL1, > + .mask_base = DC_TI_MASK_IRQLVL1, > + .ack_base = DC_TI_IRQLVL1, > +}; > + > +static int dc_ti_probe(struct i2c_client *i2c) > +{ > + struct device *dev = &i2c->dev; > + struct intel_soc_pmic *pmic; > + int ret; > + > + pmic = devm_kzalloc(dev, sizeof(*pmic), GFP_KERNEL); > + if (!pmic) > + return -ENOMEM; > + > + i2c_set_clientdata(i2c, pmic); > + > + pmic->regmap = devm_regmap_init_i2c(i2c, &dc_ti_regmap_config); > + if (IS_ERR(pmic->regmap)) > + return PTR_ERR(pmic->regmap); > + pmic->irq = i2c->irq; > + > + ret = devm_regmap_add_irq_chip(dev, pmic->regmap, pmic->irq, > + IRQF_ONESHOT, 0, > + &dc_ti_irq_chip, &pmic->irq_chip_data); > + if (ret) > + return ret; > + > + return devm_mfd_add_devices(dev, PLATFORM_DEVID_NONE, dc_ti_dev, > + ARRAY_SIZE(dc_ti_dev), NULL, 0, > + regmap_irq_get_domain(pmic->irq_chip_data)); > +} > + > +static void dc_ti_shutdown(struct i2c_client *i2c) > +{ > + struct intel_soc_pmic *pmic = i2c_get_clientdata(i2c); > + > + disable_irq(pmic->irq); > +} > + > +static int __maybe_unused dc_ti_suspend(struct device *dev) > +{ > + struct intel_soc_pmic *pmic = dev_get_drvdata(dev); > + > + disable_irq(pmic->irq); > + return 0; > +} > + > +static int __maybe_unused dc_ti_resume(struct device *dev) > +{ > + struct intel_soc_pmic *pmic = dev_get_drvdata(dev); > + > + enable_irq(pmic->irq); > + return 0; > +} > + > +static SIMPLE_DEV_PM_OPS(dc_ti_pm_ops, dc_ti_suspend, dc_ti_resume); > + > +static const struct acpi_device_id dc_ti_acpi_ids[] = { > + { "INT33F5" }, > + { }, > +}; > +MODULE_DEVICE_TABLE(acpi, dc_ti_acpi_ids); > + > +static struct i2c_driver dc_ti_i2c_driver = { > + .driver = { > + .name = KBUILD_MODNAME, > + .pm = &dc_ti_pm_ops, > + .acpi_match_table = dc_ti_acpi_ids, > + }, > + .probe_new = dc_ti_probe, > + .shutdown = dc_ti_shutdown, > +}; > +module_i2c_driver(dc_ti_i2c_driver); > + > +MODULE_DESCRIPTION("I2C driver for Intel SoC Dollar Cove TI PMIC"); > +MODULE_LICENSE("GPL v2"); > -- > 2.14.0 > -- With Best Regards, Andy Shevchenko
