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drivers/intel/mipi_camera: Add MIPI CSI camera SSDT generator

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Add SSDT generator for MIPI CSI camera to create ACPI objects
used by the Intel kernel drivers.
* SSDB: Sensor specific database for camera sensor.
* PWDB: Power database for all the camera devices.
* CAMD: ACPI object to specify the camera device type.

BUG=b:36580624
BRANCH=none
TEST=Build and boot poppy. Dump and verify that the generated SSDT table
has the required entries.

Change-Id: Ief9e56d12b64081897613bf1c7abcdf915470b99
Signed-off-by: Rizwan Qureshi <rizwan.qureshi@intel.com>
Signed-off-by: Sowmya V <v.sowmya@intel.com>
Reviewed-on: https://review.coreboot.org/18967
Reviewed-by: Martin Roth <martinroth@google.com>
Tested-by: build bot (Jenkins)
This commit is contained in:
V Sowmya
2017-02-28 17:52:05 +05:30
committed by Martin Roth
parent fa7d0a857d
commit 9f8023a869
4 changed files with 215 additions and 0 deletions
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99
src/drivers/intel/mipi_camera/camera.c Normal file
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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2017 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <arch/acpi.h>
#include <arch/acpi_device.h>
#include <arch/acpigen.h>
#include <console/console.h>
#include <device/i2c.h>
#include <device/device.h>
#include <device/path.h>
#include <string.h>
#include "chip.h"
static void camera_fill_ssdt(struct device *dev)
{
struct drivers_intel_mipi_camera_config *config = dev->chip_info;
const char *scope = acpi_device_scope(dev);
struct acpi_i2c i2c = {
.address = dev->path.i2c.device,
.mode_10bit = dev->path.i2c.mode_10bit,
.speed = I2C_SPEED_FAST,
.resource = scope,
};
if (!dev->enabled || !scope)
return;
/* Device */
acpigen_write_scope(scope);
acpigen_write_device(acpi_device_name(dev));
acpigen_write_name_string("_HID", config->acpi_hid);
acpigen_write_name_integer("_UID", config->acpi_uid);
acpigen_write_name_string("_DDN", config->chip_name);
acpigen_write_STA(ACPI_STATUS_DEVICE_ALL_ON);
/* Resources */
acpigen_write_name("_CRS");
acpigen_write_resourcetemplate_header();
acpi_device_write_i2c(&i2c);
acpigen_write_resourcetemplate_footer();
/* Mark it as Camera related device */
acpigen_write_name_integer("CAMD", config->device_type);
/* Create Device specific data */
if (config->device_type == INTEL_ACPI_CAMERA_SENSOR) {
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 */
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 */
acpigen_pop_len(); /* Device */
acpigen_pop_len(); /* Scope */
printk(BIOS_INFO, "%s: %s address 0%xh\n", acpi_device_path(dev),
dev->chip_ops->name, dev->path.i2c.device);
}
static const char *camera_acpi_name(struct device *dev)
{
struct drivers_intel_mipi_camera_config *config = dev->chip_info;
return config->acpi_name;
}
static struct device_operations camera_ops = {
.read_resources = DEVICE_NOOP,
.set_resources = DEVICE_NOOP,
.enable_resources = DEVICE_NOOP,
.acpi_name = &camera_acpi_name,
.acpi_fill_ssdt_generator = &camera_fill_ssdt,
};
static void camera_enable(struct device *dev)
{
dev->ops = &camera_ops;
}
struct chip_operations drivers_intel_mipi_camera_ops = {
CHIP_NAME("Intel MIPI Camera Device")
.enable_dev = &camera_enable
};