diff options
Diffstat (limited to 'include/linux/platform_data/x86/int3472.h')
| -rw-r--r-- | include/linux/platform_data/x86/int3472.h | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/include/linux/platform_data/x86/int3472.h b/include/linux/platform_data/x86/int3472.h new file mode 100644 index 000000000000..78276a11c48d --- /dev/null +++ b/include/linux/platform_data/x86/int3472.h @@ -0,0 +1,166 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Intel INT3472 ACPI camera sensor power-management support + * + * Author: Dan Scally <djrscally@gmail.com> + */ + +#ifndef __PLATFORM_DATA_X86_INT3472_H +#define __PLATFORM_DATA_X86_INT3472_H + +#include <linux/clk-provider.h> +#include <linux/gpio/machine.h> +#include <linux/leds.h> +#include <linux/regulator/driver.h> +#include <linux/regulator/machine.h> +#include <linux/types.h> + +/* FIXME drop this once the I2C_DEV_NAME_FORMAT macro has been added to include/linux/i2c.h */ +#ifndef I2C_DEV_NAME_FORMAT +#define I2C_DEV_NAME_FORMAT "i2c-%s" +#endif + +/* 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_GPIO_TYPE_HANDSHAKE 0x12 + +#define INT3472_PDEV_MAX_NAME_LEN 23 +#define INT3472_MAX_SENSOR_GPIOS 3 +#define INT3472_MAX_REGULATORS 3 + +/* E.g. "avdd\0" */ +#define GPIO_SUPPLY_NAME_LENGTH 5 +/* 12 chars for acpi_dev_name() + "-", e.g. "ABCD1234:00-" */ +#define GPIO_REGULATOR_NAME_LENGTH (12 + GPIO_SUPPLY_NAME_LENGTH) +/* lower- and upper-case mapping */ +#define GPIO_REGULATOR_SUPPLY_MAP_COUNT 2 +/* + * Ensure the GPIO is driven low/high for at least 2 ms before changing. + * + * 2 ms has been chosen because it is the minimum time ovXXXX sensors need to + * have their reset line driven logical high to properly register a reset. + */ +#define GPIO_REGULATOR_ENABLE_TIME (2 * USEC_PER_MSEC) +#define GPIO_REGULATOR_OFF_ON_DELAY (2 * USEC_PER_MSEC) + +#define INT3472_LED_MAX_NAME_LEN 32 + +#define CIO2_SENSOR_SSDB_MCLKSPEED_OFFSET 86 + +#define INT3472_REGULATOR(_name, _ops, _enable_time, _off_on_delay) \ + (const struct regulator_desc) { \ + .name = _name, \ + .type = REGULATOR_VOLTAGE, \ + .ops = _ops, \ + .owner = THIS_MODULE, \ + .enable_time = _enable_time, \ + .off_on_delay = _off_on_delay, \ + } + +#define to_int3472_clk(hw) \ + container_of(hw, struct int3472_clock, clk_hw) + +#define to_int3472_device(clk) \ + container_of(clk, struct int3472_discrete_device, clock) + +struct acpi_device; +struct dmi_system_id; +struct i2c_client; +struct platform_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[10]; + u8 clock_source; + u8 reserved2[17]; +}; + +struct int3472_discrete_quirks { + /* For models where AVDD GPIO is shared between sensors */ + const char *avdd_second_sensor; +}; + +struct int3472_gpio_regulator { + /* SUPPLY_MAP_COUNT * 2 to make room for second sensor mappings */ + struct regulator_consumer_supply supply_map[GPIO_REGULATOR_SUPPLY_MAP_COUNT * 2]; + char supply_name_upper[GPIO_SUPPLY_NAME_LENGTH]; + char regulator_name[GPIO_REGULATOR_NAME_LENGTH]; + struct gpio_desc *ena_gpio; + struct regulator_dev *rdev; + struct regulator_desc rdesc; +}; + +struct int3472_discrete_device { + struct acpi_device *adev; + struct device *dev; + struct acpi_device *sensor; + const char *sensor_name; + + struct int3472_gpio_regulator regulators[INT3472_MAX_REGULATORS]; + + struct int3472_clock { + struct clk *clk; + struct clk_hw clk_hw; + struct clk_lookup *cl; + struct gpio_desc *ena_gpio; + u32 frequency; + u8 imgclk_index; + } clock; + + struct int3472_pled { + struct led_classdev classdev; + struct led_lookup_data lookup; + char name[INT3472_LED_MAX_NAME_LEN]; + struct gpio_desc *gpio; + } pled; + + struct int3472_discrete_quirks quirks; + + unsigned int ngpios; /* how many GPIOs have we seen */ + unsigned int n_sensor_gpios; /* how many have we mapped to sensor */ + unsigned int n_regulator_gpios; /* how many have we mapped to a regulator */ + struct gpiod_lookup_table gpios; +}; + +extern const struct dmi_system_id skl_int3472_discrete_quirks[]; + +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); +int skl_int3472_get_sensor_adev_and_name(struct device *dev, + struct acpi_device **sensor_adev_ret, + const char **name_ret); + +int int3472_discrete_parse_crs(struct int3472_discrete_device *int3472); +void int3472_discrete_cleanup(struct int3472_discrete_device *int3472); + +int skl_int3472_register_gpio_clock(struct int3472_discrete_device *int3472, + struct gpio_desc *gpio); +int skl_int3472_register_dsm_clock(struct int3472_discrete_device *int3472); +void skl_int3472_unregister_clock(struct int3472_discrete_device *int3472); + +int skl_int3472_register_regulator(struct int3472_discrete_device *int3472, + struct gpio_desc *gpio, + unsigned int enable_time, + const char *supply_name, + const char *second_sensor); +void skl_int3472_unregister_regulator(struct int3472_discrete_device *int3472); + +int skl_int3472_register_pled(struct int3472_discrete_device *int3472, struct gpio_desc *gpio); +void skl_int3472_unregister_pled(struct int3472_discrete_device *int3472); + +#endif |