mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-09-05 20:30:41 +00:00
a032fe30cf
Typically HDMI to MIPI CSI-2 bridges have a pin to signal image data is
being received. On the host side this is wired to a GPIO for polling or
interrupts. This includes the Lontium HDMI to MIPI CSI-2 bridges
lt6911uxe and lt6911uxc.
The GPIO "hpd" is used already by other HDMI to CSI-2 bridges, use it
here as well.
Signed-off-by: Dongcheng Yan <dongcheng.yan@intel.com>
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Fixes: 20244cbafb ("media: i2c: change lt6911uxe irq_gpio name to "hpd"")
Cc: stable@vger.kernel.org
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
168 lines
5.0 KiB
C
168 lines
5.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Intel INT3472 ACPI camera sensor power-management support
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*
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* Author: Dan Scally <djrscally@gmail.com>
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*/
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#ifndef __PLATFORM_DATA_X86_INT3472_H
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#define __PLATFORM_DATA_X86_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_GPIO_TYPE_HANDSHAKE 0x12
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#define INT3472_GPIO_TYPE_HOTPLUG_DETECT 0x13
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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 INT3472_MAX_REGULATORS 3
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/* E.g. "avdd\0" */
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#define GPIO_SUPPLY_NAME_LENGTH 5
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/* 12 chars for acpi_dev_name() + "-", e.g. "ABCD1234:00-" */
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#define GPIO_REGULATOR_NAME_LENGTH (12 + GPIO_SUPPLY_NAME_LENGTH)
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/* lower- and upper-case mapping */
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#define GPIO_REGULATOR_SUPPLY_MAP_COUNT 2
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/*
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* Ensure the GPIO is driven low/high for at least 2 ms before changing.
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*
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* 2 ms has been chosen because it is the minimum time ovXXXX sensors need to
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* have their reset line driven logical high to properly register a reset.
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*/
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#define GPIO_REGULATOR_ENABLE_TIME (2 * USEC_PER_MSEC)
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#define GPIO_REGULATOR_OFF_ON_DELAY (2 * USEC_PER_MSEC)
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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, _ops, _enable_time, _off_on_delay) \
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(const struct regulator_desc) { \
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.name = _name, \
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.type = REGULATOR_VOLTAGE, \
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.ops = _ops, \
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.owner = THIS_MODULE, \
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.enable_time = _enable_time, \
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.off_on_delay = _off_on_delay, \
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}
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#define to_int3472_clk(hw) \
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container_of(hw, struct int3472_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 dmi_system_id;
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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[10];
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u8 clock_source;
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u8 reserved2[17];
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};
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struct int3472_discrete_quirks {
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/* For models where AVDD GPIO is shared between sensors */
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const char *avdd_second_sensor;
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};
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struct int3472_gpio_regulator {
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/* SUPPLY_MAP_COUNT * 2 to make room for second sensor mappings */
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struct regulator_consumer_supply supply_map[GPIO_REGULATOR_SUPPLY_MAP_COUNT * 2];
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char supply_name_upper[GPIO_SUPPLY_NAME_LENGTH];
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char regulator_name[GPIO_REGULATOR_NAME_LENGTH];
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struct gpio_desc *ena_gpio;
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struct regulator_dev *rdev;
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struct regulator_desc rdesc;
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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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struct int3472_gpio_regulator regulators[INT3472_MAX_REGULATORS];
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struct int3472_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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u8 imgclk_index;
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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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struct int3472_discrete_quirks quirks;
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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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unsigned int n_regulator_gpios; /* how many have we mapped to a regulator */
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struct gpiod_lookup_table gpios;
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};
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extern const struct dmi_system_id skl_int3472_discrete_quirks[];
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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 int3472_discrete_parse_crs(struct int3472_discrete_device *int3472);
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void int3472_discrete_cleanup(struct int3472_discrete_device *int3472);
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int skl_int3472_register_gpio_clock(struct int3472_discrete_device *int3472,
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struct gpio_desc *gpio);
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int skl_int3472_register_dsm_clock(struct int3472_discrete_device *int3472);
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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 gpio_desc *gpio,
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unsigned int enable_time,
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const char *supply_name,
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const char *second_sensor);
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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, struct gpio_desc *gpio);
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void skl_int3472_unregister_pled(struct int3472_discrete_device *int3472);
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#endif
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