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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/acpi/pmic/intel_pmic_xpower.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/acpi/pmic/intel_pmic_xpower.c')
-rw-r--r--drivers/acpi/pmic/intel_pmic_xpower.c367
1 files changed, 367 insertions, 0 deletions
diff --git a/drivers/acpi/pmic/intel_pmic_xpower.c b/drivers/acpi/pmic/intel_pmic_xpower.c
new file mode 100644
index 000000000..61bbe4c24
--- /dev/null
+++ b/drivers/acpi/pmic/intel_pmic_xpower.c
@@ -0,0 +1,367 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * XPower AXP288 PMIC operation region driver
+ *
+ * Copyright (C) 2014 Intel Corporation. All rights reserved.
+ */
+
+#include <linux/acpi.h>
+#include <linux/init.h>
+#include <linux/mfd/axp20x.h>
+#include <linux/regmap.h>
+#include <linux/platform_device.h>
+#include <asm/iosf_mbi.h>
+#include "intel_pmic.h"
+
+#define XPOWER_GPADC_LOW 0x5b
+#define XPOWER_GPI1_CTRL 0x92
+
+#define GPI1_LDO_MASK GENMASK(2, 0)
+#define GPI1_LDO_ON (3 << 0)
+#define GPI1_LDO_OFF (4 << 0)
+
+#define AXP288_ADC_TS_CURRENT_ON_OFF_MASK GENMASK(1, 0)
+#define AXP288_ADC_TS_CURRENT_OFF (0 << 0)
+#define AXP288_ADC_TS_CURRENT_ON_WHEN_CHARGING (1 << 0)
+#define AXP288_ADC_TS_CURRENT_ON_ONDEMAND (2 << 0)
+#define AXP288_ADC_TS_CURRENT_ON (3 << 0)
+
+static struct pmic_table power_table[] = {
+ {
+ .address = 0x00,
+ .reg = 0x13,
+ .bit = 0x05,
+ }, /* ALD1 */
+ {
+ .address = 0x04,
+ .reg = 0x13,
+ .bit = 0x06,
+ }, /* ALD2 */
+ {
+ .address = 0x08,
+ .reg = 0x13,
+ .bit = 0x07,
+ }, /* ALD3 */
+ {
+ .address = 0x0c,
+ .reg = 0x12,
+ .bit = 0x03,
+ }, /* DLD1 */
+ {
+ .address = 0x10,
+ .reg = 0x12,
+ .bit = 0x04,
+ }, /* DLD2 */
+ {
+ .address = 0x14,
+ .reg = 0x12,
+ .bit = 0x05,
+ }, /* DLD3 */
+ {
+ .address = 0x18,
+ .reg = 0x12,
+ .bit = 0x06,
+ }, /* DLD4 */
+ {
+ .address = 0x1c,
+ .reg = 0x12,
+ .bit = 0x00,
+ }, /* ELD1 */
+ {
+ .address = 0x20,
+ .reg = 0x12,
+ .bit = 0x01,
+ }, /* ELD2 */
+ {
+ .address = 0x24,
+ .reg = 0x12,
+ .bit = 0x02,
+ }, /* ELD3 */
+ {
+ .address = 0x28,
+ .reg = 0x13,
+ .bit = 0x02,
+ }, /* FLD1 */
+ {
+ .address = 0x2c,
+ .reg = 0x13,
+ .bit = 0x03,
+ }, /* FLD2 */
+ {
+ .address = 0x30,
+ .reg = 0x13,
+ .bit = 0x04,
+ }, /* FLD3 */
+ {
+ .address = 0x34,
+ .reg = 0x10,
+ .bit = 0x03,
+ }, /* BUC1 */
+ {
+ .address = 0x38,
+ .reg = 0x10,
+ .bit = 0x06,
+ }, /* BUC2 */
+ {
+ .address = 0x3c,
+ .reg = 0x10,
+ .bit = 0x05,
+ }, /* BUC3 */
+ {
+ .address = 0x40,
+ .reg = 0x10,
+ .bit = 0x04,
+ }, /* BUC4 */
+ {
+ .address = 0x44,
+ .reg = 0x10,
+ .bit = 0x01,
+ }, /* BUC5 */
+ {
+ .address = 0x48,
+ .reg = 0x10,
+ .bit = 0x00
+ }, /* BUC6 */
+ {
+ .address = 0x4c,
+ .reg = 0x92,
+ }, /* GPI1 */
+};
+
+/* TMP0 - TMP5 are the same, all from GPADC */
+static struct pmic_table thermal_table[] = {
+ {
+ .address = 0x00,
+ .reg = XPOWER_GPADC_LOW
+ },
+ {
+ .address = 0x0c,
+ .reg = XPOWER_GPADC_LOW
+ },
+ {
+ .address = 0x18,
+ .reg = XPOWER_GPADC_LOW
+ },
+ {
+ .address = 0x24,
+ .reg = XPOWER_GPADC_LOW
+ },
+ {
+ .address = 0x30,
+ .reg = XPOWER_GPADC_LOW
+ },
+ {
+ .address = 0x3c,
+ .reg = XPOWER_GPADC_LOW
+ },
+};
+
+static int intel_xpower_pmic_get_power(struct regmap *regmap, int reg,
+ int bit, u64 *value)
+{
+ int data;
+
+ if (regmap_read(regmap, reg, &data))
+ return -EIO;
+
+ /* GPIO1 LDO regulator needs special handling */
+ if (reg == XPOWER_GPI1_CTRL)
+ *value = ((data & GPI1_LDO_MASK) == GPI1_LDO_ON);
+ else
+ *value = (data & BIT(bit)) ? 1 : 0;
+
+ return 0;
+}
+
+static int intel_xpower_pmic_update_power(struct regmap *regmap, int reg,
+ int bit, bool on)
+{
+ int data, ret;
+
+ ret = iosf_mbi_block_punit_i2c_access();
+ if (ret)
+ return ret;
+
+ /* GPIO1 LDO regulator needs special handling */
+ if (reg == XPOWER_GPI1_CTRL) {
+ ret = regmap_update_bits(regmap, reg, GPI1_LDO_MASK,
+ on ? GPI1_LDO_ON : GPI1_LDO_OFF);
+ goto out;
+ }
+
+ if (regmap_read(regmap, reg, &data)) {
+ ret = -EIO;
+ goto out;
+ }
+
+ if (on)
+ data |= BIT(bit);
+ else
+ data &= ~BIT(bit);
+
+ if (regmap_write(regmap, reg, data))
+ ret = -EIO;
+out:
+ iosf_mbi_unblock_punit_i2c_access();
+
+ return ret;
+}
+
+/**
+ * intel_xpower_pmic_get_raw_temp(): Get raw temperature reading from the PMIC
+ *
+ * @regmap: regmap of the PMIC device
+ * @reg: register to get the reading
+ *
+ * Return a positive value on success, errno on failure.
+ */
+static int intel_xpower_pmic_get_raw_temp(struct regmap *regmap, int reg)
+{
+ int ret, adc_ts_pin_ctrl;
+ u8 buf[2];
+
+ /*
+ * The current-source used for the battery temp-sensor (TS) is shared
+ * with the GPADC. For proper fuel-gauge and charger operation the TS
+ * current-source needs to be permanently on. But to read the GPADC we
+ * need to temporary switch the TS current-source to ondemand, so that
+ * the GPADC can use it, otherwise we will always read an all 0 value.
+ *
+ * Note that the switching from on to on-ondemand is not necessary
+ * when the TS current-source is off (this happens on devices which
+ * do not use the TS-pin).
+ */
+ ret = regmap_read(regmap, AXP288_ADC_TS_PIN_CTRL, &adc_ts_pin_ctrl);
+ if (ret)
+ return ret;
+
+ if (adc_ts_pin_ctrl & AXP288_ADC_TS_CURRENT_ON_OFF_MASK) {
+ /*
+ * AXP288_ADC_TS_PIN_CTRL reads are cached by the regmap, so
+ * this does to a single I2C-transfer, and thus there is no
+ * need to explicitly call iosf_mbi_block_punit_i2c_access().
+ */
+ ret = regmap_update_bits(regmap, AXP288_ADC_TS_PIN_CTRL,
+ AXP288_ADC_TS_CURRENT_ON_OFF_MASK,
+ AXP288_ADC_TS_CURRENT_ON_ONDEMAND);
+ if (ret)
+ return ret;
+
+ /* Wait a bit after switching the current-source */
+ usleep_range(6000, 10000);
+ }
+
+ ret = iosf_mbi_block_punit_i2c_access();
+ if (ret)
+ return ret;
+
+ ret = regmap_bulk_read(regmap, AXP288_GP_ADC_H, buf, 2);
+ if (ret == 0)
+ ret = (buf[0] << 4) + ((buf[1] >> 4) & 0x0f);
+
+ if (adc_ts_pin_ctrl & AXP288_ADC_TS_CURRENT_ON_OFF_MASK) {
+ regmap_update_bits(regmap, AXP288_ADC_TS_PIN_CTRL,
+ AXP288_ADC_TS_CURRENT_ON_OFF_MASK,
+ AXP288_ADC_TS_CURRENT_ON);
+ }
+
+ iosf_mbi_unblock_punit_i2c_access();
+
+ return ret;
+}
+
+static int intel_xpower_exec_mipi_pmic_seq_element(struct regmap *regmap,
+ u16 i2c_address, u32 reg_address,
+ u32 value, u32 mask)
+{
+ int ret;
+
+ if (i2c_address != 0x34) {
+ pr_err("%s: Unexpected i2c-addr: 0x%02x (reg-addr 0x%x value 0x%x mask 0x%x)\n",
+ __func__, i2c_address, reg_address, value, mask);
+ return -ENXIO;
+ }
+
+ ret = iosf_mbi_block_punit_i2c_access();
+ if (ret)
+ return ret;
+
+ ret = regmap_update_bits(regmap, reg_address, mask, value);
+
+ iosf_mbi_unblock_punit_i2c_access();
+
+ return ret;
+}
+
+static int intel_xpower_lpat_raw_to_temp(struct acpi_lpat_conversion_table *lpat_table,
+ int raw)
+{
+ struct acpi_lpat first = lpat_table->lpat[0];
+ struct acpi_lpat last = lpat_table->lpat[lpat_table->lpat_count - 1];
+
+ /*
+ * Some LPAT tables in the ACPI Device for the AXP288 PMIC for some
+ * reason only describe a small temperature range, e.g. 27° - 37°
+ * Celcius. Resulting in errors when the tablet is idle in a cool room.
+ *
+ * To avoid these errors clamp the raw value to be inside the LPAT.
+ */
+ if (first.raw < last.raw)
+ raw = clamp(raw, first.raw, last.raw);
+ else
+ raw = clamp(raw, last.raw, first.raw);
+
+ return acpi_lpat_raw_to_temp(lpat_table, raw);
+}
+
+static const struct intel_pmic_opregion_data intel_xpower_pmic_opregion_data = {
+ .get_power = intel_xpower_pmic_get_power,
+ .update_power = intel_xpower_pmic_update_power,
+ .get_raw_temp = intel_xpower_pmic_get_raw_temp,
+ .exec_mipi_pmic_seq_element = intel_xpower_exec_mipi_pmic_seq_element,
+ .lpat_raw_to_temp = intel_xpower_lpat_raw_to_temp,
+ .power_table = power_table,
+ .power_table_count = ARRAY_SIZE(power_table),
+ .thermal_table = thermal_table,
+ .thermal_table_count = ARRAY_SIZE(thermal_table),
+ .pmic_i2c_address = 0x34,
+};
+
+static acpi_status intel_xpower_pmic_gpio_handler(u32 function,
+ acpi_physical_address address, u32 bit_width, u64 *value,
+ void *handler_context, void *region_context)
+{
+ return AE_OK;
+}
+
+static int intel_xpower_pmic_opregion_probe(struct platform_device *pdev)
+{
+ struct device *parent = pdev->dev.parent;
+ struct axp20x_dev *axp20x = dev_get_drvdata(parent);
+ acpi_status status;
+ int result;
+
+ status = acpi_install_address_space_handler(ACPI_HANDLE(parent),
+ ACPI_ADR_SPACE_GPIO, intel_xpower_pmic_gpio_handler,
+ NULL, NULL);
+ if (ACPI_FAILURE(status))
+ return -ENODEV;
+
+ result = intel_pmic_install_opregion_handler(&pdev->dev,
+ ACPI_HANDLE(parent), axp20x->regmap,
+ &intel_xpower_pmic_opregion_data);
+ if (result)
+ acpi_remove_address_space_handler(ACPI_HANDLE(parent),
+ ACPI_ADR_SPACE_GPIO,
+ intel_xpower_pmic_gpio_handler);
+
+ return result;
+}
+
+static struct platform_driver intel_xpower_pmic_opregion_driver = {
+ .probe = intel_xpower_pmic_opregion_probe,
+ .driver = {
+ .name = "axp288_pmic_acpi",
+ },
+};
+builtin_platform_driver(intel_xpower_pmic_opregion_driver);