diff options
Diffstat (limited to 'src/drivers')
| -rw-r--r-- | src/drivers/intel/mipi_camera/camera.c | 141 | ||||
| -rw-r--r-- | src/drivers/intel/mipi_camera/chip.h | 47 |
2 files changed, 187 insertions, 1 deletions
diff --git a/src/drivers/intel/mipi_camera/camera.c b/src/drivers/intel/mipi_camera/camera.c index b1075b85ed..5230a2ac3f 100644 --- a/src/drivers/intel/mipi_camera/camera.c +++ b/src/drivers/intel/mipi_camera/camera.c @@ -10,6 +10,144 @@ #include <device/pci_def.h> #include "chip.h" +#define SENSOR_NAME_UUID "822ace8f-2814-4174-a56b-5f029fe079ee" +#define SENSOR_TYPE_UUID "26257549-9271-4ca4-bb43-c4899d5a4881" +#define DEFAULT_ENDPOINT 0 + +static void camera_fill_sensor_defaults(struct drivers_intel_mipi_camera_config *config) +{ + if (config->disable_ssdb_defaults) + return; + + if (!config->ssdb.platform) + config->ssdb.platform = PLATFORM_SKC; + + if (!config->ssdb.flash_support) + config->ssdb.flash_support = FLASH_DISABLE; + + if (!config->ssdb.privacy_led) + config->ssdb.privacy_led = PRIVACY_LED_A_16mA; + + if (!config->ssdb.mipi_define) + config->ssdb.mipi_define = MIPI_INFO_ACPI_DEFINED; + + if (!config->ssdb.mclk_speed) + config->ssdb.mclk_speed = CLK_FREQ_19_2MHZ; +} + +/* + * Adds settings for a camera sensor device (typically at "\_SB.PCI0.I2Cx.CAMy"). The drivers + * for Linux tends to expect the camera sensor device and any related nvram / vcm devices to be + * separate ACPI devices, while the drivers for Windows want all of these to be grouped + * together in the camera sensor ACPI device. This implementation tries to satisfy both, + * though the unfortunate tradeoff is that the same I2C address for nvram and vcm is advertised + * by multiple devices in ACPI (via "_CRS"). The Windows driver can use the "_DSM" method to + * disambiguate the I2C resources in the camera sensor ACPI device. Drivers for Windows + * typically query "SSDB" for configuration information (represented as a binary blob dump of + * struct), while Linux drivers typically consult individual parameters in "_DSD". + * + * The tree of tables in "_DSD" is analogous to what's used for the "CIO2" device. The _DSD + * specifies a child table for the sensor's port (e.g., PRT0 for "port0"--this implementation + * assumes a camera only has 1 port). The PRT0 table specifies a table for each endpoint + * (though only 1 endpoint is supported by this implementation so the table only has an + * "endpoint0" that points to a EP00 table). The EP00 table primarily describes the # of lanes + * in "data-lines", a list of frequencies in "list-frequencies", and specifies the name of the + * other side in "remote-endpoint" (typically "\_SB.PCI0.CIO2"). + */ +static void camera_fill_sensor(const struct device *dev) +{ + struct drivers_intel_mipi_camera_config *config = dev->chip_info; + struct acpi_dp *ep00 = NULL; + struct acpi_dp *prt0 = NULL; + struct acpi_dp *dsd = NULL; + struct acpi_dp *remote = NULL; + const char *vcm_name = NULL; + struct acpi_dp *lens_focus = NULL; + + camera_fill_sensor_defaults(config); + + ep00 = acpi_dp_new_table("EP00"); + acpi_dp_add_integer(ep00, "endpoint", DEFAULT_ENDPOINT); + acpi_dp_add_integer(ep00, "clock-lanes", 0); + + if (config->ssdb.lanes_used > 0) { + struct acpi_dp *lanes = acpi_dp_new_table("data-lanes"); + uint32_t i; + for (i = 1; i <= config->ssdb.lanes_used; ++i) + acpi_dp_add_integer(lanes, NULL, i); + acpi_dp_add_array(ep00, lanes); + } + + if (config->num_freq_entries) { + struct acpi_dp *freq = acpi_dp_new_table("link-frequencies"); + uint32_t i; + for (i = 0; i < config->num_freq_entries && i < MAX_LINK_FREQ_ENTRIES; ++i) + acpi_dp_add_integer(freq, NULL, config->link_freq[i]); + acpi_dp_add_array(ep00, freq); + } + + remote = acpi_dp_new_table("remote-endpoint"); + + acpi_dp_add_reference(remote, NULL, config->remote_name); + acpi_dp_add_integer(remote, NULL, config->ssdb.link_used); + acpi_dp_add_integer(remote, NULL, DEFAULT_ENDPOINT); + acpi_dp_add_array(ep00, remote); + + prt0 = acpi_dp_new_table("PRT0"); + + acpi_dp_add_integer(prt0, "port", 0); + acpi_dp_add_child(prt0, "endpoint0", ep00); + dsd = acpi_dp_new_table("_DSD"); + + acpi_dp_add_integer(dsd, "clock-frequency", config->ssdb.mclk_speed); + + if (config->ssdb.degree) + acpi_dp_add_integer(dsd, "rotation", 180); + + if (config->ssdb.vcm_type) { + if (config->vcm_name) { + vcm_name = config->vcm_name; + } else { + const struct device_path path = { + .type = DEVICE_PATH_I2C, + .i2c.device = config->vcm_address, + }; + struct device *vcm_dev = find_dev_path(dev->bus, &path); + struct drivers_intel_mipi_camera_config *vcm_config; + vcm_config = vcm_dev ? vcm_dev->chip_info : NULL; + + if (!vcm_config) + printk(BIOS_ERR, "Failed to get VCM\n"); + else if (vcm_config->device_type != INTEL_ACPI_CAMERA_VCM) + printk(BIOS_ERR, "Device isn't VCM\n"); + else + vcm_name = acpi_device_path(vcm_dev); + } + } + + if (vcm_name) { + lens_focus = acpi_dp_new_table("lens-focus"); + acpi_dp_add_reference(lens_focus, NULL, vcm_name); + acpi_dp_add_array(dsd, lens_focus); + } + + acpi_dp_add_child(dsd, "port0", prt0); + acpi_dp_write(dsd); + + acpigen_write_method_serialized("SSDB", 0); + acpigen_write_return_byte_buffer((uint8_t *)&config->ssdb, sizeof(config->ssdb)); + acpigen_pop_len(); /* Method */ + + /* Fill Power Sequencing Data */ + if (config->num_pwdb_entries > 0) { + acpigen_write_method_serialized("PWDB", 0); + acpigen_write_return_byte_buffer((uint8_t *)&config->pwdb, + sizeof(struct intel_pwdb) * + config->num_pwdb_entries); + acpigen_pop_len(); /* Method */ + } +} + static void camera_fill_nvm(const struct device *dev) { struct drivers_intel_mipi_camera_config *config = dev->chip_info; @@ -135,6 +273,9 @@ static void write_camera_device_common(const struct device *dev) } switch (config->device_type) { + case INTEL_ACPI_CAMERA_SENSOR: + camera_fill_sensor(dev); + break; case INTEL_ACPI_CAMERA_VCM: camera_fill_vcm(dev); break; diff --git a/src/drivers/intel/mipi_camera/chip.h b/src/drivers/intel/mipi_camera/chip.h index b04a10013e..c962c9a0f6 100644 --- a/src/drivers/intel/mipi_camera/chip.h +++ b/src/drivers/intel/mipi_camera/chip.h @@ -5,7 +5,41 @@ #include <stdint.h> -#define MAX_PWDB_ENTRIES 12 +#define DEFAULT_LINK_FREQ 450000000 +#define MAX_PWDB_ENTRIES 12 +#define MAX_PORT_ENTRIES 4 +#define MAX_LINK_FREQ_ENTRIES 4 + +enum camera_device_type { + DEV_TYPE_SENSOR = 0, + DEV_TYPE_VCM, + DEV_TYPE_ROM +}; + +enum intel_camera_platform_type { + PLATFORM_SKC = 9, + PLATFORM_CNL = 10 +}; + +enum intel_camera_flash_type { + FLASH_DEFAULT = 0, + FLASH_DISABLE = 2, + FLASH_ENABLE = 3 +}; + +enum intel_camera_led_type { + PRIVACY_LED_DEFAULT = 0, + PRIVACY_LED_A_16mA +}; + +enum intel_camera_mipi_info { + MIPI_INFO_SENSOR_DRIVER = 0, + MIPI_INFO_ACPI_DEFINED +}; + +#define CLK_FREQ_19_2MHZ 19200000 +#define CLK_FREQ_24MHZ 24000000 +#define CLK_FREQ_20MHZ 20000000 enum intel_camera_device_type { INTEL_ACPI_CAMERA_CIO2, @@ -65,12 +99,16 @@ struct intel_ssdb { uint8_t degree; /* Camera Orientation */ uint8_t mipi_define; /* MIPI info defined in ACPI or sensor driver */ + uint32_t mclk_speed; /* Clock info for sensor */ uint32_t mclk; /* Clock info for sensor */ uint8_t control_logic_id; /* PMIC device node used for the camera sensor */ uint8_t mipi_data_format; /* MIPI data format */ uint8_t silicon_version; /* Silicon version */ uint8_t customer_id; /* Customer ID */ + uint8_t mclk_port; + uint8_t reserved[13]; /* Pads SSDB out so the binary blob in ACPI is + the same size as seen on other firmwares.*/ } __packed; struct intel_pwdb { @@ -91,6 +129,13 @@ struct drivers_intel_mipi_camera_config { const char *acpi_name; const char *chip_name; unsigned int acpi_uid; + + /* Settings specific to camera sensor */ + bool disable_ssdb_defaults; + + uint8_t num_freq_entries; /* # of elements in link_freq */ + uint32_t link_freq[MAX_LINK_FREQ_ENTRIES]; + const char *sensor_name; /* default "UNKNOWN" */ const char *remote_name; /* default "\_SB.PCI0.CIO2" */ const char *vcm_name; /* defaults to |vcm_address| device */ uint16_t rom_address; /* I2C to use if ssdb.rom_type != 0 */ |