Update ov5693 and intel-skl-int3472 drivers

drivers/platform/x86/Kconfig

@@ -844,6 +844,8 @@ config INTEL_CHT_INT33FE
  device and CONFIG_TYPEC_FUSB302=m and CONFIG_BATTERY_MAX17042=m
  for Type-C device.
 
+source "drivers/platform/x86/intel-int3472/Kconfig"
+
 config INTEL_HID_EVENT
  tristate "INTEL HID Event"
  depends on ACPI

drivers/platform/x86/Makefile

@@ -86,7 +86,7 @@ obj-$(CONFIG_INTEL_HID_EVENT) += intel-hid.o
 obj-$(CONFIG_INTEL_INT0002_VGPIO) += intel_int0002_vgpio.o
 obj-$(CONFIG_INTEL_MENLOW) += intel_menlow.o
 obj-$(CONFIG_INTEL_OAKTRAIL) += intel_oaktrail.o
-
+obj-$(CONFIG_INTEL_SKL_INT3472) += intel-int3472/
 obj-$(CONFIG_INTEL_VBTN) += intel-vbtn.o
 
 # MSI

drivers/platform/x86/intel-int3472/Kconfig

@@ -0,0 +1,31 @@
+config INTEL_SKL_INT3472
+ tristate "Intel SkyLake ACPI INT3472 Driver"
+ depends on ACPI
+ depends on REGULATOR
+ depends on GPIOLIB
+ depends on COMMON_CLK && CLKDEV_LOOKUP
+ depends on I2C
+ select MFD_CORE
+ select REGMAP_I2C
+ help
+ This driver adds support for the INT3472 ACPI devices found on some
+ Intel SkyLake devices.
+
+ The INT3472 is an Intel camera power controller, a logical device
+ found on some Skylake-based systems that can map to different
+ hardware devices depending on the platform. On machines
+ designed for Chrome OS, it maps to a TPS68470 camera PMIC. On
+ machines designed for Windows, it maps to either a TP68470
+ camera PMIC, a uP6641Q sensor PMIC, or a set of discrete GPIOs
+ and power gates.
+
+ If your device was designed for Chrome OS, this driver will provide
+ an ACPI OpRegion, which must be available before any of the devices
+ using it are probed. For this reason, you should select Y if your
+ device was designed for ChromeOS. For the same reason the
+ I2C_DESIGNWARE_PLATFORM option must be set to Y too.
+
+ Say Y or M here if you have a SkyLake device designed for use
+ with Windows or ChromeOS. Say N here if you are not sure.
+
+ The module will be named "intel-skl-int3472"

drivers/platform/x86/intel-int3472/Makefile

@@ -0,0 +1,4 @@
+obj-$(CONFIG_INTEL_SKL_INT3472) += intel_skl_int3472.o
+intel_skl_int3472-objs := intel_skl_int3472_common.o \
+ intel_skl_int3472_discrete.o \
+ intel_skl_int3472_tps68470.o

drivers/platform/x86/intel-int3472/intel_skl_int3472_common.c

@@ -0,0 +1,106 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Author: Dan Scally <djrscally@gmail.com> */
+
+#include <linux/acpi.h>
+#include <linux/i2c.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+#include "intel_skl_int3472_common.h"
+
+union acpi_object *skl_int3472_get_acpi_buffer(struct acpi_device *adev,
+ char *id)
+{
+ struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+ acpi_handle handle = adev->handle;
+ union acpi_object *obj;
+ acpi_status status;
+
+ status = acpi_evaluate_object(handle, id, NULL, &buffer);
+ if (ACPI_FAILURE(status))
+ return ERR_PTR(-ENODEV);
+
+ obj = buffer.pointer;
+ if (!obj)
+ return ERR_PTR(-ENODEV);
+
+ if (obj->type != ACPI_TYPE_BUFFER) {
+ dev_err(&adev->dev, "%s object is not an ACPI buffer\n", id);
+ kfree(obj);
+ return ERR_PTR(-EINVAL);
+ }
+
+ return obj;
+}
+
+int skl_int3472_fill_cldb(struct acpi_device *adev, struct int3472_cldb *cldb)
+{
+ union acpi_object *obj;
+ int ret = 0;
+
+ obj = skl_int3472_get_acpi_buffer(adev, "CLDB");
+ if (IS_ERR(obj))
+ return PTR_ERR(obj);
+
+ if (obj->buffer.length > sizeof(*cldb)) {
+ dev_err(&adev->dev, "The CLDB buffer is too large\n");
+ ret = -EINVAL;
+ goto out_free_obj;
+ }
+
+ memcpy(cldb, obj->buffer.pointer, obj->buffer.length);
+
+out_free_obj:
+ kfree(obj);
+ return ret;
+}
+
+static const struct acpi_device_id int3472_device_id[] = {
+ { "INT3472", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, int3472_device_id);
+
+static struct platform_driver int3472_discrete = {
+ .driver = {
+ .name = "int3472-discrete",
+ .acpi_match_table = int3472_device_id,
+ },
+ .probe = skl_int3472_discrete_probe,
+ .remove = skl_int3472_discrete_remove,
+};
+
+static struct i2c_driver int3472_tps68470 = {
+ .driver = {
+ .name = "int3472-tps68470",
+ .acpi_match_table = int3472_device_id,
+ },
+ .probe_new = skl_int3472_tps68470_probe,
+};
+
+static int skl_int3472_init(void)
+{
+ int ret = 0;
+
+ ret = platform_driver_register(&int3472_discrete);
+ if (ret)
+ return ret;
+
+ ret = i2c_register_driver(THIS_MODULE, &int3472_tps68470);
+ if (ret)
+ platform_driver_unregister(&int3472_discrete);
+
+ return ret;
+}
+module_init(skl_int3472_init);
+
+static void skl_int3472_exit(void)
+{
+ platform_driver_unregister(&int3472_discrete);
+ i2c_del_driver(&int3472_tps68470);
+}
+module_exit(skl_int3472_exit);
+
+MODULE_DESCRIPTION("Intel SkyLake INT3472 ACPI Device Driver");
+MODULE_AUTHOR("Daniel Scally <djrscally@gmail.com>");
+MODULE_LICENSE("GPL v2");

drivers/platform/x86/intel-int3472/intel_skl_int3472_common.h

@@ -0,0 +1,110 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Author: Dan Scally <djrscally@gmail.com> */
+
+#ifndef _INTEL_SKL_INT3472_H
+#define _INTEL_SKL_INT3472_H
+
+#include <linux/clk-provider.h>
+#include <linux/gpio/machine.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/types.h>
+
+/* PMIC GPIO Types */
+#define INT3472_GPIO_TYPE_RESET 0x00
+#define INT3472_GPIO_TYPE_POWERDOWN 0x01
+#define INT3472_GPIO_TYPE_POWER_ENABLE 0x0b
+#define INT3472_GPIO_TYPE_CLK_ENABLE 0x0c
+#define INT3472_GPIO_TYPE_PRIVACY_LED 0x0d
+
+#define INT3472_PDEV_MAX_NAME_LEN 23
+#define INT3472_MAX_SENSOR_GPIOS 3
+
+#define GPIO_REGULATOR_NAME_LENGTH 21
+#define GPIO_REGULATOR_SUPPLY_NAME_LENGTH 9
+
+#define CIO2_SENSOR_SSDB_MCLKSPEED_OFFSET 86
+
+#define INT3472_REGULATOR(_name, _supply, _ops) \
+ (const struct regulator_desc) { \
+ .name = _name, \
+ .supply_name = _supply, \
+ .type = REGULATOR_VOLTAGE, \
+ .ops = _ops, \
+ .owner = THIS_MODULE, \
+ }
+
+#define to_int3472_clk(hw) \
+ container_of(hw, struct int3472_gpio_clock, clk_hw)
+
+#define to_int3472_device(clk) \
+ container_of(clk, struct int3472_discrete_device, clock)
+
+struct platform_device;
+struct i2c_client;
+struct acpi_device;
+
+struct int3472_cldb {
+ u8 version;
+ /*
+ * control logic type
+ * 0: UNKNOWN
+ * 1: DISCRETE(CRD-D)
+ * 2: PMIC TPS68470
+ * 3: PMIC uP6641
+ */
+ u8 control_logic_type;
+ u8 control_logic_id;
+ u8 sensor_card_sku;
+ u8 reserved[28];
+};
+
+struct int3472_gpio_function_remap {
+ char *documented;
+ char *actual;
+};
+
+struct int3472_sensor_config {
+ const char *sensor_module_name;
+ struct regulator_consumer_supply supply_map;
+ const struct int3472_gpio_function_remap *function_maps;
+};
+
+struct int3472_discrete_device {
+ struct acpi_device *adev;
+ struct device *dev;
+ struct acpi_device *sensor;
+ const char *sensor_name;
+
+ struct int3472_sensor_config *sensor_config;
+
+ struct int3472_gpio_regulator {
+ char regulator_name[GPIO_REGULATOR_NAME_LENGTH];
+ char supply_name[GPIO_REGULATOR_SUPPLY_NAME_LENGTH];
+ struct gpio_desc *gpio;
+ struct regulator_dev *rdev;
+ struct regulator_desc rdesc;
+ } regulator;
+
+ struct int3472_gpio_clock {
+ struct clk *clk;
+ struct clk_hw clk_hw;
+ struct clk_lookup *cl;
+ struct gpio_desc *ena_gpio;
+ struct gpio_desc *led_gpio;
+ u32 frequency;
+ } clock;
+
+ unsigned int n_gpios; /* how many GPIOs have we seen */
+ unsigned int n_sensor_gpios; /* how many have we mapped to sensor */
+ struct gpiod_lookup_table gpios;
+};
+
+int skl_int3472_discrete_probe(struct platform_device *pdev);
+int skl_int3472_discrete_remove(struct platform_device *pdev);
+int skl_int3472_tps68470_probe(struct i2c_client *client);
+union acpi_object *skl_int3472_get_acpi_buffer(struct acpi_device *adev,
+ char *id);
+int skl_int3472_fill_cldb(struct acpi_device *adev, struct int3472_cldb *cldb);
+
+#endif