7a88de319c
According to: https://github.com/intel/ipu6-drivers/blob/master/patch/int3472-support-independent-clock-and-LED-gpios-5.17%2B.patch Bits 31-24 of the _DSM pin entry integer value codes the active-value, that is the actual physical signal (0 or 1) which needs to be output on the pin to turn the sensor chip on (to make it active). So if bits 31-24 are 0 for a reset pin, then the actual value of the reset pin needs to be 0 to take the chip out of reset. IOW in this case the reset signal is active-high rather then the default active-low. And if bits 31-24 are 0 for a clk-en pin then the actual value of the clk pin needs to be 0 to enable the clk. So in this case the clk-en signal is active-low rather then the default active-high. IOW if bits 31-24 are 0 for a pin, then the default polarity of the pin is inverted. Add a check for this and also propagate this new polarity to the clock registration. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com> Link: https://lore.kernel.org/r/20230127203729.10205-6-hdegoede@redhat.com
136 lines
3.7 KiB
C
136 lines
3.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Author: Dan Scally <djrscally@gmail.com> */
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#ifndef _INTEL_SKL_INT3472_H
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#define _INTEL_SKL_INT3472_H
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#include <linux/clk-provider.h>
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#include <linux/gpio/machine.h>
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#include <linux/leds.h>
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#include <linux/regulator/driver.h>
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#include <linux/regulator/machine.h>
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#include <linux/types.h>
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/* FIXME drop this once the I2C_DEV_NAME_FORMAT macro has been added to include/linux/i2c.h */
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#ifndef I2C_DEV_NAME_FORMAT
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#define I2C_DEV_NAME_FORMAT "i2c-%s"
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#endif
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/* PMIC GPIO Types */
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#define INT3472_GPIO_TYPE_RESET 0x00
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#define INT3472_GPIO_TYPE_POWERDOWN 0x01
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#define INT3472_GPIO_TYPE_POWER_ENABLE 0x0b
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#define INT3472_GPIO_TYPE_CLK_ENABLE 0x0c
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#define INT3472_GPIO_TYPE_PRIVACY_LED 0x0d
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#define INT3472_PDEV_MAX_NAME_LEN 23
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#define INT3472_MAX_SENSOR_GPIOS 3
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#define GPIO_REGULATOR_NAME_LENGTH 21
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#define GPIO_REGULATOR_SUPPLY_NAME_LENGTH 9
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#define INT3472_LED_MAX_NAME_LEN 32
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#define CIO2_SENSOR_SSDB_MCLKSPEED_OFFSET 86
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#define INT3472_REGULATOR(_name, _supply, _ops) \
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(const struct regulator_desc) { \
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.name = _name, \
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.supply_name = _supply, \
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.type = REGULATOR_VOLTAGE, \
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.ops = _ops, \
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.owner = THIS_MODULE, \
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}
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#define to_int3472_clk(hw) \
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container_of(hw, struct int3472_gpio_clock, clk_hw)
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#define to_int3472_device(clk) \
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container_of(clk, struct int3472_discrete_device, clock)
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struct acpi_device;
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struct i2c_client;
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struct platform_device;
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struct int3472_cldb {
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u8 version;
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/*
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* control logic type
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* 0: UNKNOWN
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* 1: DISCRETE(CRD-D)
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* 2: PMIC TPS68470
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* 3: PMIC uP6641
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*/
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u8 control_logic_type;
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u8 control_logic_id;
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u8 sensor_card_sku;
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u8 reserved[28];
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};
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struct int3472_gpio_function_remap {
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const char *documented;
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const char *actual;
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};
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struct int3472_sensor_config {
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const char *sensor_module_name;
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struct regulator_consumer_supply supply_map;
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const struct int3472_gpio_function_remap *function_maps;
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};
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struct int3472_discrete_device {
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struct acpi_device *adev;
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struct device *dev;
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struct acpi_device *sensor;
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const char *sensor_name;
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const struct int3472_sensor_config *sensor_config;
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struct int3472_gpio_regulator {
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char regulator_name[GPIO_REGULATOR_NAME_LENGTH];
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char supply_name[GPIO_REGULATOR_SUPPLY_NAME_LENGTH];
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struct gpio_desc *gpio;
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struct regulator_dev *rdev;
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struct regulator_desc rdesc;
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} regulator;
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struct int3472_gpio_clock {
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struct clk *clk;
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struct clk_hw clk_hw;
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struct clk_lookup *cl;
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struct gpio_desc *ena_gpio;
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u32 frequency;
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} clock;
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struct int3472_pled {
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struct led_classdev classdev;
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struct led_lookup_data lookup;
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char name[INT3472_LED_MAX_NAME_LEN];
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struct gpio_desc *gpio;
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} pled;
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unsigned int ngpios; /* how many GPIOs have we seen */
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unsigned int n_sensor_gpios; /* how many have we mapped to sensor */
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struct gpiod_lookup_table gpios;
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};
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union acpi_object *skl_int3472_get_acpi_buffer(struct acpi_device *adev,
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char *id);
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int skl_int3472_fill_cldb(struct acpi_device *adev, struct int3472_cldb *cldb);
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int skl_int3472_get_sensor_adev_and_name(struct device *dev,
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struct acpi_device **sensor_adev_ret,
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const char **name_ret);
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int skl_int3472_register_clock(struct int3472_discrete_device *int3472,
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struct acpi_resource_gpio *agpio, u32 polarity);
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void skl_int3472_unregister_clock(struct int3472_discrete_device *int3472);
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int skl_int3472_register_regulator(struct int3472_discrete_device *int3472,
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struct acpi_resource_gpio *agpio);
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void skl_int3472_unregister_regulator(struct int3472_discrete_device *int3472);
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int skl_int3472_register_pled(struct int3472_discrete_device *int3472,
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struct acpi_resource_gpio *agpio, u32 polarity);
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void skl_int3472_unregister_pled(struct int3472_discrete_device *int3472);
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#endif
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