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path: root/drivers/acpi/pmic/intel_pmic_bytcrc.c
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Diffstat (limited to 'drivers/acpi/pmic/intel_pmic_bytcrc.c')
-rw-r--r--drivers/acpi/pmic/intel_pmic_bytcrc.c301
1 files changed, 301 insertions, 0 deletions
diff --git a/drivers/acpi/pmic/intel_pmic_bytcrc.c b/drivers/acpi/pmic/intel_pmic_bytcrc.c
new file mode 100644
index 000000000000..2a692cc4b7ae
--- /dev/null
+++ b/drivers/acpi/pmic/intel_pmic_bytcrc.c
@@ -0,0 +1,301 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Intel Bay Trail Crystal Cove PMIC operation region driver
+ *
+ * Copyright (C) 2014 Intel Corporation. All rights reserved.
+ */
+
+#include <linux/acpi.h>
+#include <linux/init.h>
+#include <linux/mfd/intel_soc_pmic.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include "intel_pmic.h"
+
+#define PWR_SOURCE_SELECT BIT(1)
+
+#define PMIC_A0LOCK_REG 0xc5
+
+static struct pmic_table power_table[] = {
+/* {
+ .address = 0x00,
+ .reg = ??,
+ .bit = ??,
+ }, ** VSYS */
+ {
+ .address = 0x04,
+ .reg = 0x63,
+ .bit = 0x00,
+ }, /* SYSX -> VSYS_SX */
+ {
+ .address = 0x08,
+ .reg = 0x62,
+ .bit = 0x00,
+ }, /* SYSU -> VSYS_U */
+ {
+ .address = 0x0c,
+ .reg = 0x64,
+ .bit = 0x00,
+ }, /* SYSS -> VSYS_S */
+ {
+ .address = 0x10,
+ .reg = 0x6a,
+ .bit = 0x00,
+ }, /* V50S -> V5P0S */
+ {
+ .address = 0x14,
+ .reg = 0x6b,
+ .bit = 0x00,
+ }, /* HOST -> VHOST, USB2/3 host */
+ {
+ .address = 0x18,
+ .reg = 0x6c,
+ .bit = 0x00,
+ }, /* VBUS -> VBUS, USB2/3 OTG */
+ {
+ .address = 0x1c,
+ .reg = 0x6d,
+ .bit = 0x00,
+ }, /* HDMI -> VHDMI */
+/* {
+ .address = 0x20,
+ .reg = ??,
+ .bit = ??,
+ }, ** S285 */
+ {
+ .address = 0x24,
+ .reg = 0x66,
+ .bit = 0x00,
+ }, /* X285 -> V2P85SX, camera */
+/* {
+ .address = 0x28,
+ .reg = ??,
+ .bit = ??,
+ }, ** V33A */
+ {
+ .address = 0x2c,
+ .reg = 0x69,
+ .bit = 0x00,
+ }, /* V33S -> V3P3S, display/ssd/audio */
+ {
+ .address = 0x30,
+ .reg = 0x68,
+ .bit = 0x00,
+ }, /* V33U -> V3P3U, SDIO wifi&bt */
+/* {
+ .address = 0x34 .. 0x40,
+ .reg = ??,
+ .bit = ??,
+ }, ** V33I, V18A, REFQ, V12A */
+ {
+ .address = 0x44,
+ .reg = 0x5c,
+ .bit = 0x00,
+ }, /* V18S -> V1P8S, SOC/USB PHY/SIM */
+ {
+ .address = 0x48,
+ .reg = 0x5d,
+ .bit = 0x00,
+ }, /* V18X -> V1P8SX, eMMC/camara/audio */
+ {
+ .address = 0x4c,
+ .reg = 0x5b,
+ .bit = 0x00,
+ }, /* V18U -> V1P8U, LPDDR */
+ {
+ .address = 0x50,
+ .reg = 0x61,
+ .bit = 0x00,
+ }, /* V12X -> V1P2SX, SOC SFR */
+ {
+ .address = 0x54,
+ .reg = 0x60,
+ .bit = 0x00,
+ }, /* V12S -> V1P2S, MIPI */
+/* {
+ .address = 0x58,
+ .reg = ??,
+ .bit = ??,
+ }, ** V10A */
+ {
+ .address = 0x5c,
+ .reg = 0x56,
+ .bit = 0x00,
+ }, /* V10S -> V1P0S, SOC GFX */
+ {
+ .address = 0x60,
+ .reg = 0x57,
+ .bit = 0x00,
+ }, /* V10X -> V1P0SX, SOC display/DDR IO/PCIe */
+ {
+ .address = 0x64,
+ .reg = 0x59,
+ .bit = 0x00,
+ }, /* V105 -> V1P05S, L2 SRAM */
+};
+
+static struct pmic_table thermal_table[] = {
+ {
+ .address = 0x00,
+ .reg = 0x75
+ },
+ {
+ .address = 0x04,
+ .reg = 0x95
+ },
+ {
+ .address = 0x08,
+ .reg = 0x97
+ },
+ {
+ .address = 0x0c,
+ .reg = 0x77
+ },
+ {
+ .address = 0x10,
+ .reg = 0x9a
+ },
+ {
+ .address = 0x14,
+ .reg = 0x9c
+ },
+ {
+ .address = 0x18,
+ .reg = 0x79
+ },
+ {
+ .address = 0x1c,
+ .reg = 0x9f
+ },
+ {
+ .address = 0x20,
+ .reg = 0xa1
+ },
+ {
+ .address = 0x48,
+ .reg = 0x94
+ },
+ {
+ .address = 0x4c,
+ .reg = 0x99
+ },
+ {
+ .address = 0x50,
+ .reg = 0x9e
+ },
+};
+
+static int intel_crc_pmic_get_power(struct regmap *regmap, int reg,
+ int bit, u64 *value)
+{
+ int data;
+
+ if (regmap_read(regmap, reg, &data))
+ return -EIO;
+
+ *value = (data & PWR_SOURCE_SELECT) && (data & BIT(bit)) ? 1 : 0;
+ return 0;
+}
+
+static int intel_crc_pmic_update_power(struct regmap *regmap, int reg,
+ int bit, bool on)
+{
+ int data;
+
+ if (regmap_read(regmap, reg, &data))
+ return -EIO;
+
+ if (on) {
+ data |= PWR_SOURCE_SELECT | BIT(bit);
+ } else {
+ data &= ~BIT(bit);
+ data |= PWR_SOURCE_SELECT;
+ }
+
+ if (regmap_write(regmap, reg, data))
+ return -EIO;
+ return 0;
+}
+
+static int intel_crc_pmic_get_raw_temp(struct regmap *regmap, int reg)
+{
+ int temp_l, temp_h;
+
+ /*
+ * Raw temperature value is 10bits: 8bits in reg
+ * and 2bits in reg-1: bit0,1
+ */
+ if (regmap_read(regmap, reg, &temp_l) ||
+ regmap_read(regmap, reg - 1, &temp_h))
+ return -EIO;
+
+ return temp_l | (temp_h & 0x3) << 8;
+}
+
+static int intel_crc_pmic_update_aux(struct regmap *regmap, int reg, int raw)
+{
+ return regmap_write(regmap, reg, raw) ||
+ regmap_update_bits(regmap, reg - 1, 0x3, raw >> 8) ? -EIO : 0;
+}
+
+static int intel_crc_pmic_get_policy(struct regmap *regmap,
+ int reg, int bit, u64 *value)
+{
+ int pen;
+
+ if (regmap_read(regmap, reg, &pen))
+ return -EIO;
+ *value = pen >> 7;
+ return 0;
+}
+
+static int intel_crc_pmic_update_policy(struct regmap *regmap,
+ int reg, int bit, int enable)
+{
+ int alert0;
+
+ /* Update to policy enable bit requires unlocking a0lock */
+ if (regmap_read(regmap, PMIC_A0LOCK_REG, &alert0))
+ return -EIO;
+
+ if (regmap_update_bits(regmap, PMIC_A0LOCK_REG, 0x01, 0))
+ return -EIO;
+
+ if (regmap_update_bits(regmap, reg, 0x80, enable << 7))
+ return -EIO;
+
+ /* restore alert0 */
+ if (regmap_write(regmap, PMIC_A0LOCK_REG, alert0))
+ return -EIO;
+
+ return 0;
+}
+
+static struct intel_pmic_opregion_data intel_crc_pmic_opregion_data = {
+ .get_power = intel_crc_pmic_get_power,
+ .update_power = intel_crc_pmic_update_power,
+ .get_raw_temp = intel_crc_pmic_get_raw_temp,
+ .update_aux = intel_crc_pmic_update_aux,
+ .get_policy = intel_crc_pmic_get_policy,
+ .update_policy = intel_crc_pmic_update_policy,
+ .power_table = power_table,
+ .power_table_count= ARRAY_SIZE(power_table),
+ .thermal_table = thermal_table,
+ .thermal_table_count = ARRAY_SIZE(thermal_table),
+};
+
+static int intel_crc_pmic_opregion_probe(struct platform_device *pdev)
+{
+ struct intel_soc_pmic *pmic = dev_get_drvdata(pdev->dev.parent);
+ return intel_pmic_install_opregion_handler(&pdev->dev,
+ ACPI_HANDLE(pdev->dev.parent), pmic->regmap,
+ &intel_crc_pmic_opregion_data);
+}
+
+static struct platform_driver intel_crc_pmic_opregion_driver = {
+ .probe = intel_crc_pmic_opregion_probe,
+ .driver = {
+ .name = "byt_crystal_cove_pmic",
+ },
+};
+builtin_platform_driver(intel_crc_pmic_opregion_driver);