diff options
-rw-r--r-- | drivers/acpi/Kconfig | 6 | ||||
-rw-r--r-- | drivers/acpi/Makefile | 1 | ||||
-rw-r--r-- | drivers/acpi/pmic/intel_pmic_chtdc_ti.c | 137 |
3 files changed, 144 insertions, 0 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index 1ce52f84dc23..176fae699891 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -521,6 +521,12 @@ config CHT_WC_PMIC_OPREGION help This config adds ACPI operation region support for CHT Whiskey Cove PMIC. +config CHT_DC_TI_PMIC_OPREGION + bool "ACPI operation region support for Dollar Cove TI PMIC" + depends on INTEL_SOC_PMIC_CHTDC_TI + help + This config adds ACPI operation region support for Dollar Cove TI PMIC. + endif config ACPI_CONFIGFS diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile index 90265ab4437a..21185613bc9b 100644 --- a/drivers/acpi/Makefile +++ b/drivers/acpi/Makefile @@ -104,6 +104,7 @@ obj-$(CONFIG_CRC_PMIC_OPREGION) += pmic/intel_pmic_crc.o obj-$(CONFIG_XPOWER_PMIC_OPREGION) += pmic/intel_pmic_xpower.o obj-$(CONFIG_BXT_WC_PMIC_OPREGION) += pmic/intel_pmic_bxtwc.o obj-$(CONFIG_CHT_WC_PMIC_OPREGION) += pmic/intel_pmic_chtwc.o +obj-$(CONFIG_CHT_DC_TI_PMIC_OPREGION) += pmic/intel_pmic_chtdc_ti.o obj-$(CONFIG_ACPI_CONFIGFS) += acpi_configfs.o diff --git a/drivers/acpi/pmic/intel_pmic_chtdc_ti.c b/drivers/acpi/pmic/intel_pmic_chtdc_ti.c new file mode 100644 index 000000000000..109c1e9c9c7a --- /dev/null +++ b/drivers/acpi/pmic/intel_pmic_chtdc_ti.c @@ -0,0 +1,137 @@ +/* + * Dollar Cove TI PMIC operation region driver + * Copyright (C) 2014 Intel Corporation. All rights reserved. + * + * Rewritten and cleaned up + * Copyright (C) 2017 Takashi Iwai <tiwai@suse.de> + */ + +#include <linux/acpi.h> +#include <linux/init.h> +#include <linux/mfd/intel_soc_pmic.h> +#include <linux/platform_device.h> +#include "intel_pmic.h" + +/* registers stored in 16bit BE (high:low, total 10bit) */ +#define CHTDC_TI_VBAT 0x54 +#define CHTDC_TI_DIETEMP 0x56 +#define CHTDC_TI_BPTHERM 0x58 +#define CHTDC_TI_GPADC 0x5a + +static struct pmic_table chtdc_ti_power_table[] = { + { .address = 0x00, .reg = 0x41 }, + { .address = 0x04, .reg = 0x42 }, + { .address = 0x08, .reg = 0x43 }, + { .address = 0x0c, .reg = 0x45 }, + { .address = 0x10, .reg = 0x46 }, + { .address = 0x14, .reg = 0x47 }, + { .address = 0x18, .reg = 0x48 }, + { .address = 0x1c, .reg = 0x49 }, + { .address = 0x20, .reg = 0x4a }, + { .address = 0x24, .reg = 0x4b }, + { .address = 0x28, .reg = 0x4c }, + { .address = 0x2c, .reg = 0x4d }, + { .address = 0x30, .reg = 0x4e }, +}; + +static struct pmic_table chtdc_ti_thermal_table[] = { + { + .address = 0x00, + .reg = CHTDC_TI_GPADC + }, + { + .address = 0x0c, + .reg = CHTDC_TI_GPADC + }, + /* TMP2 -> SYSTEMP */ + { + .address = 0x18, + .reg = CHTDC_TI_GPADC + }, + /* TMP3 -> BPTHERM */ + { + .address = 0x24, + .reg = CHTDC_TI_BPTHERM + }, + { + .address = 0x30, + .reg = CHTDC_TI_GPADC + }, + /* TMP5 -> DIETEMP */ + { + .address = 0x3c, + .reg = CHTDC_TI_DIETEMP + }, +}; + +static int chtdc_ti_pmic_get_power(struct regmap *regmap, int reg, int bit, + u64 *value) +{ + int data; + + if (regmap_read(regmap, reg, &data)) + return -EIO; + + *value = data & 1; + return 0; +} + +static int chtdc_ti_pmic_update_power(struct regmap *regmap, int reg, int bit, + bool on) +{ + return regmap_update_bits(regmap, reg, 1, on); +} + +static int chtdc_ti_pmic_get_raw_temp(struct regmap *regmap, int reg) +{ + u8 buf[2]; + + if (regmap_bulk_read(regmap, reg, buf, 2)) + return -EIO; + + /* stored in big-endian */ + return ((buf[0] & 0x03) << 8) | buf[1]; +} + +static struct intel_pmic_opregion_data chtdc_ti_pmic_opregion_data = { + .get_power = chtdc_ti_pmic_get_power, + .update_power = chtdc_ti_pmic_update_power, + .get_raw_temp = chtdc_ti_pmic_get_raw_temp, + .power_table = chtdc_ti_power_table, + .power_table_count = ARRAY_SIZE(chtdc_ti_power_table), + .thermal_table = chtdc_ti_thermal_table, + .thermal_table_count = ARRAY_SIZE(chtdc_ti_thermal_table), +}; + +static int chtdc_ti_pmic_opregion_probe(struct platform_device *pdev) +{ + struct intel_soc_pmic *pmic = dev_get_drvdata(pdev->dev.parent); + int err; + + err = intel_pmic_install_opregion_handler(&pdev->dev, + ACPI_HANDLE(pdev->dev.parent), pmic->regmap, + &chtdc_ti_pmic_opregion_data); + if (err < 0) + return err; + + /* Re-enumerate devices depending on PMIC */ + acpi_walk_dep_device_list(ACPI_HANDLE(pdev->dev.parent)); + return 0; +} + +static const struct platform_device_id chtdc_ti_pmic_opregion_id_table[] = { + { .name = "chtdc_ti_region" }, + {}, +}; + +static struct platform_driver chtdc_ti_pmic_opregion_driver = { + .probe = chtdc_ti_pmic_opregion_probe, + .driver = { + .name = "cht_dollar_cove_ti_pmic", + }, + .id_table = chtdc_ti_pmic_opregion_id_table, +}; +module_platform_driver(chtdc_ti_pmic_opregion_driver); + +MODULE_DESCRIPTION("Dollar Cove TI PMIC opregion driver"); +MODULE_LICENSE("GPL v2"); |