--- /dev/null
+/*
+ * Intel CHT Whiskey Cove PMIC operation region driver
+ * Copyright (C) 2017 Hans de Goede <hdegoede@redhat.com>
+ *
+ * Based on various non upstream patches to support the CHT Whiskey Cove PMIC:
+ * Copyright (C) 2013-2015 Intel Corporation. All rights reserved.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#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 CHT_WC_V1P05A_CTRL 0x6e3b
+#define CHT_WC_V1P15_CTRL 0x6e3c
+#define CHT_WC_V1P05A_VSEL 0x6e3d
+#define CHT_WC_V1P15_VSEL 0x6e3e
+#define CHT_WC_V1P8A_CTRL 0x6e56
+#define CHT_WC_V1P8SX_CTRL 0x6e57
+#define CHT_WC_VDDQ_CTRL 0x6e58
+#define CHT_WC_V1P2A_CTRL 0x6e59
+#define CHT_WC_V1P2SX_CTRL 0x6e5a
+#define CHT_WC_V1P8A_VSEL 0x6e5b
+#define CHT_WC_VDDQ_VSEL 0x6e5c
+#define CHT_WC_V2P8SX_CTRL 0x6e5d
+#define CHT_WC_V3P3A_CTRL 0x6e5e
+#define CHT_WC_V3P3SD_CTRL 0x6e5f
+#define CHT_WC_VSDIO_CTRL 0x6e67
+#define CHT_WC_V3P3A_VSEL 0x6e68
+#define CHT_WC_VPROG1A_CTRL 0x6e90
+#define CHT_WC_VPROG1B_CTRL 0x6e91
+#define CHT_WC_VPROG1F_CTRL 0x6e95
+#define CHT_WC_VPROG2D_CTRL 0x6e99
+#define CHT_WC_VPROG3A_CTRL 0x6e9a
+#define CHT_WC_VPROG3B_CTRL 0x6e9b
+#define CHT_WC_VPROG4A_CTRL 0x6e9c
+#define CHT_WC_VPROG4B_CTRL 0x6e9d
+#define CHT_WC_VPROG4C_CTRL 0x6e9e
+#define CHT_WC_VPROG4D_CTRL 0x6e9f
+#define CHT_WC_VPROG5A_CTRL 0x6ea0
+#define CHT_WC_VPROG5B_CTRL 0x6ea1
+#define CHT_WC_VPROG6A_CTRL 0x6ea2
+#define CHT_WC_VPROG6B_CTRL 0x6ea3
+#define CHT_WC_VPROG1A_VSEL 0x6ec0
+#define CHT_WC_VPROG1B_VSEL 0x6ec1
+#define CHT_WC_V1P8SX_VSEL 0x6ec2
+#define CHT_WC_V1P2SX_VSEL 0x6ec3
+#define CHT_WC_V1P2A_VSEL 0x6ec4
+#define CHT_WC_VPROG1F_VSEL 0x6ec5
+#define CHT_WC_VSDIO_VSEL 0x6ec6
+#define CHT_WC_V2P8SX_VSEL 0x6ec7
+#define CHT_WC_V3P3SD_VSEL 0x6ec8
+#define CHT_WC_VPROG2D_VSEL 0x6ec9
+#define CHT_WC_VPROG3A_VSEL 0x6eca
+#define CHT_WC_VPROG3B_VSEL 0x6ecb
+#define CHT_WC_VPROG4A_VSEL 0x6ecc
+#define CHT_WC_VPROG4B_VSEL 0x6ecd
+#define CHT_WC_VPROG4C_VSEL 0x6ece
+#define CHT_WC_VPROG4D_VSEL 0x6ecf
+#define CHT_WC_VPROG5A_VSEL 0x6ed0
+#define CHT_WC_VPROG5B_VSEL 0x6ed1
+#define CHT_WC_VPROG6A_VSEL 0x6ed2
+#define CHT_WC_VPROG6B_VSEL 0x6ed3
+
+/*
+ * Regulator support is based on the non upstream patch:
+ * "regulator: whiskey_cove: implements Whiskey Cove pmic VRF support"
+ * https://github.com/intel-aero/meta-intel-aero/blob/master/recipes-kernel/linux/linux-yocto/0019-regulator-whiskey_cove-implements-WhiskeyCove-pmic-V.patch
+ */
+static struct pmic_table power_table[] = {
+ {
+ .address = 0x0,
+ .reg = CHT_WC_V1P8A_CTRL,
+ .bit = 0x01,
+ }, /* V18A */
+ {
+ .address = 0x04,
+ .reg = CHT_WC_V1P8SX_CTRL,
+ .bit = 0x07,
+ }, /* V18X */
+ {
+ .address = 0x08,
+ .reg = CHT_WC_VDDQ_CTRL,
+ .bit = 0x01,
+ }, /* VDDQ */
+ {
+ .address = 0x0c,
+ .reg = CHT_WC_V1P2A_CTRL,
+ .bit = 0x07,
+ }, /* V12A */
+ {
+ .address = 0x10,
+ .reg = CHT_WC_V1P2SX_CTRL,
+ .bit = 0x07,
+ }, /* V12X */
+ {
+ .address = 0x14,
+ .reg = CHT_WC_V2P8SX_CTRL,
+ .bit = 0x07,
+ }, /* V28X */
+ {
+ .address = 0x18,
+ .reg = CHT_WC_V3P3A_CTRL,
+ .bit = 0x01,
+ }, /* V33A */
+ {
+ .address = 0x1c,
+ .reg = CHT_WC_V3P3SD_CTRL,
+ .bit = 0x07,
+ }, /* V3SD */
+ {
+ .address = 0x20,
+ .reg = CHT_WC_VSDIO_CTRL,
+ .bit = 0x07,
+ }, /* VSD */
+/* {
+ .address = 0x24,
+ .reg = ??,
+ .bit = ??,
+ }, ** VSW2 */
+/* {
+ .address = 0x28,
+ .reg = ??,
+ .bit = ??,
+ }, ** VSW1 */
+/* {
+ .address = 0x2c,
+ .reg = ??,
+ .bit = ??,
+ }, ** VUPY */
+/* {
+ .address = 0x30,
+ .reg = ??,
+ .bit = ??,
+ }, ** VRSO */
+ {
+ .address = 0x34,
+ .reg = CHT_WC_VPROG1A_CTRL,
+ .bit = 0x07,
+ }, /* VP1A */
+ {
+ .address = 0x38,
+ .reg = CHT_WC_VPROG1B_CTRL,
+ .bit = 0x07,
+ }, /* VP1B */
+ {
+ .address = 0x3c,
+ .reg = CHT_WC_VPROG1F_CTRL,
+ .bit = 0x07,
+ }, /* VP1F */
+ {
+ .address = 0x40,
+ .reg = CHT_WC_VPROG2D_CTRL,
+ .bit = 0x07,
+ }, /* VP2D */
+ {
+ .address = 0x44,
+ .reg = CHT_WC_VPROG3A_CTRL,
+ .bit = 0x07,
+ }, /* VP3A */
+ {
+ .address = 0x48,
+ .reg = CHT_WC_VPROG3B_CTRL,
+ .bit = 0x07,
+ }, /* VP3B */
+ {
+ .address = 0x4c,
+ .reg = CHT_WC_VPROG4A_CTRL,
+ .bit = 0x07,
+ }, /* VP4A */
+ {
+ .address = 0x50,
+ .reg = CHT_WC_VPROG4B_CTRL,
+ .bit = 0x07,
+ }, /* VP4B */
+ {
+ .address = 0x54,
+ .reg = CHT_WC_VPROG4C_CTRL,
+ .bit = 0x07,
+ }, /* VP4C */
+ {
+ .address = 0x58,
+ .reg = CHT_WC_VPROG4D_CTRL,
+ .bit = 0x07,
+ }, /* VP4D */
+ {
+ .address = 0x5c,
+ .reg = CHT_WC_VPROG5A_CTRL,
+ .bit = 0x07,
+ }, /* VP5A */
+ {
+ .address = 0x60,
+ .reg = CHT_WC_VPROG5B_CTRL,
+ .bit = 0x07,
+ }, /* VP5B */
+ {
+ .address = 0x64,
+ .reg = CHT_WC_VPROG6A_CTRL,
+ .bit = 0x07,
+ }, /* VP6A */
+ {
+ .address = 0x68,
+ .reg = CHT_WC_VPROG6B_CTRL,
+ .bit = 0x07,
+ }, /* VP6B */
+/* {
+ .address = 0x6c,
+ .reg = ??,
+ .bit = ??,
+ } ** VP7A */
+};
+
+static int intel_cht_wc_pmic_get_power(struct regmap *regmap, int reg,
+ int bit, u64 *value)
+{
+ int data;
+
+ if (regmap_read(regmap, reg, &data))
+ return -EIO;
+
+ *value = (data & bit) ? 1 : 0;
+ return 0;
+}
+
+static int intel_cht_wc_pmic_update_power(struct regmap *regmap, int reg,
+ int bitmask, bool on)
+{
+ return regmap_update_bits(regmap, reg, bitmask, on ? 1 : 0);
+}
+
+/*
+ * The thermal table and ops are empty, we do not support the Thermal opregion
+ * (DPTF) due to lacking documentation.
+ */
+static struct intel_pmic_opregion_data intel_cht_wc_pmic_opregion_data = {
+ .get_power = intel_cht_wc_pmic_get_power,
+ .update_power = intel_cht_wc_pmic_update_power,
+ .power_table = power_table,
+ .power_table_count = ARRAY_SIZE(power_table),
+};
+
+static int intel_cht_wc_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_cht_wc_pmic_opregion_data);
+}
+
+static struct platform_device_id cht_wc_opregion_id_table[] = {
+ { .name = "cht_wcove_region" },
+ {},
+};
+MODULE_DEVICE_TABLE(platform, cht_wc_opregion_id_table);
+
+static struct platform_driver intel_cht_wc_pmic_opregion_driver = {
+ .probe = intel_cht_wc_pmic_opregion_probe,
+ .driver = {
+ .name = "cht_whiskey_cove_pmic",
+ },
+ .id_table = cht_wc_opregion_id_table,
+};
+module_platform_driver(intel_cht_wc_pmic_opregion_driver);
+
+MODULE_DESCRIPTION("Intel CHT Whiskey Cove PMIC operation region driver");
+MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
+MODULE_LICENSE("GPL");
projects / karo-tx-linux.git / commitdiff