// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2019-2020, The Linux Foundation. All rights reserved.
 */
#include <linux/module.h>
#include <linux/build_bug.h>

#include "cam_req_mgr_dev.h"
#include "cam_sync_api.h"
#include "cam_smmu_api.h"
#include "cam_cpas_hw_intf.h"
#include "cam_cdm_intf_api.h"

#include "cam_ife_csid_dev.h"
#include "cam_vfe.h"
#include "cam_isp_dev.h"

#include "cam_res_mgr_api.h"
#include "cam_cci_dev.h"
#include "cam_sensor_dev.h"
#include "cam_actuator_dev.h"
#include "cam_csiphy_dev.h"
#include "cam_eeprom_dev.h"
#include "cam_ois_dev.h"

#if IS_REACHABLE(CONFIG_LEDS_QPNP_FLASH_V2)
#include "cam_flash_dev.h"
#endif

#include "a5_core.h"
#include "ipe_core.h"
#include "bps_core.h"
#include "cam_icp_subdev.h"

#include "jpeg_dma_core.h"
#include "jpeg_enc_core.h"
#include "cam_jpeg_dev.h"

#include "cam_fd_hw_intf.h"
#include "cam_fd_dev.h"

#include "cam_lrme_hw_intf.h"
#include "cam_lrme_dev.h"

#include "cam_custom_dev.h"
#include "cam_custom_csid_dev.h"
#include "cam_custom_sub_mod_dev.h"

#include "cam_debug_util.h"

#include "ope_dev_intf.h"

#include "cam_top_tpg_v1.h"
#include "cam_tfe_dev.h"
#include "cam_tfe_csid530.h"
#include "camera_main.h"

struct camera_submodule_component {
	int (*init)(void);
	void (*exit)(void);
};

struct camera_submodule {
	char *name;
	uint num_component;
	const struct camera_submodule_component *component;
};

static const struct camera_submodule_component camera_base[] = {
	{&cam_req_mgr_init, &cam_req_mgr_exit},
	{&cam_sync_init, &cam_sync_exit},
	{&cam_smmu_init_module, &cam_smmu_exit_module},
	{&cam_cpas_dev_init_module, &cam_cpas_dev_exit_module},
	{&cam_cdm_intf_init_module, &cam_cdm_intf_exit_module},
	{&cam_hw_cdm_init_module, &cam_hw_cdm_exit_module},
};

static const struct camera_submodule_component camera_isp[] = {
#ifdef CONFIG_SPECTRA_ISP
	{&cam_ife_csid17x_init_module, &cam_ife_csid17x_exit_module},
	{&cam_ife_csid_lite_init_module, &cam_ife_csid_lite_exit_module},
	{&cam_vfe_init_module, &cam_vfe_exit_module},
	{&cam_isp_dev_init_module, &cam_isp_dev_exit_module},
#endif
};

static const struct camera_submodule_component camera_tfe[] = {
#if IS_ENABLED(CONFIG_SPECTRA_TFE)
	{&cam_top_tpg_v1_init_module, &cam_top_tpg_v1_exit_module},
	{&cam_tfe_init_module, &cam_tfe_exit_module},
	{&cam_tfe_csid530_init_module, &cam_tfe_csid530_exit_module},
#endif
};

static const struct camera_submodule_component camera_sensor[] = {
#ifdef CONFIG_SPECTRA_SENSOR
	{&cam_res_mgr_init, &cam_res_mgr_exit},
	{&cam_cci_init_module, &cam_cci_exit_module},
	{&cam_csiphy_init_module, &cam_csiphy_exit_module},
	{&cam_actuator_driver_init, &cam_actuator_driver_exit},
	{&cam_sensor_driver_init, &cam_sensor_driver_exit},
	{&cam_eeprom_driver_init, &cam_eeprom_driver_exit},
	{&cam_ois_driver_init, &cam_ois_driver_exit},
#if IS_REACHABLE(CONFIG_LEDS_QPNP_FLASH_V2)
	{&cam_flash_init_module, &cam_flash_exit_module},
#endif
#endif
};

static const struct camera_submodule_component camera_icp[] = {
#ifdef CONFIG_SPECTRA_ICP
	{&cam_a5_init_module, &cam_a5_exit_module},
	{&cam_ipe_init_module, &cam_ipe_exit_module},
	{&cam_bps_init_module, &cam_bps_exit_module},
	{&cam_icp_init_module, &cam_icp_exit_module},
#endif
};

static const struct camera_submodule_component camera_ope[] = {
#ifdef CONFIG_SPECTRA_OPE
	{&cam_ope_init_module, &cam_ope_exit_module},
	{&cam_ope_subdev_init_module, &cam_ope_subdev_exit_module},
#endif
};

static const struct camera_submodule_component camera_jpeg[] = {
#ifdef CONFIG_SPECTRA_JPEG
	{&cam_jpeg_enc_init_module, &cam_jpeg_enc_exit_module},
	{&cam_jpeg_dma_init_module, &cam_jpeg_dma_exit_module},
	{&cam_jpeg_dev_init_module, &cam_jpeg_dev_exit_module},
#endif
};

static const struct camera_submodule_component camera_fd[] = {
#ifdef CONFIG_SPECTRA_FD
	{&cam_fd_hw_init_module, &cam_fd_hw_exit_module},
	{&cam_fd_dev_init_module, &cam_fd_dev_exit_module},
#endif
};

static const struct camera_submodule_component camera_lrme[] = {
#ifdef CONFIG_SPECTRA_LRME
	{&cam_lrme_hw_init_module, &cam_lrme_hw_exit_module},
	{&cam_lrme_dev_init_module, &cam_lrme_dev_exit_module},
#endif
};

static const struct camera_submodule_component camera_custom[] = {
#ifdef CONFIG_SPECTRA_CUSTOM
	{&cam_custom_hw_sub_module_init, &cam_custom_hw_sub_module_exit},
	{&cam_custom_csid_driver_init, &cam_custom_csid_driver_exit},
	{&cam_custom_dev_init_module, &cam_custom_dev_exit_module},
#endif
};

static const struct camera_submodule submodule_table[] = {
	{
		.name = "Camera BASE",
		.num_component = ARRAY_SIZE(camera_base),
		.component = camera_base,
	},
	{
		.name = "Camera ISP",
		.num_component = ARRAY_SIZE(camera_isp),
		.component = camera_isp,
	},
	{
		.name = "Camera TFE",
		.num_component = ARRAY_SIZE(camera_tfe),
		.component = camera_tfe,
	},
	{
		.name = "Camera SENSOR",
		.num_component = ARRAY_SIZE(camera_sensor),
		.component = camera_sensor
	},
	{
		.name = "Camera ICP",
		.num_component = ARRAY_SIZE(camera_icp),
		.component = camera_icp,
	},
	{
		.name = "Camera OPE",
		.num_component = ARRAY_SIZE(camera_ope),
		.component = camera_ope,
	},
	{
		.name = "Camera JPEG",
		.num_component = ARRAY_SIZE(camera_jpeg),
		.component = camera_jpeg,
	},
	{
		.name = "Camera FD",
		.num_component = ARRAY_SIZE(camera_fd),
		.component = camera_fd,
	},
	{
		.name = "Camera LRME",
		.num_component = ARRAY_SIZE(camera_lrme),
		.component = camera_lrme,
	},
	{
		.name = "Camera CUSTOM",
		.num_component = ARRAY_SIZE(camera_custom),
		.component = camera_custom,
	}
};

/*
 * Drivers to be bound by component framework in this order with
 * CRM as master
 */
static struct platform_driver *const cam_component_drivers[] = {
/* BASE */
	&cam_sync_driver,
	&cam_smmu_driver,
	&cam_cpas_driver,
	&cam_cdm_intf_driver,
	&cam_hw_cdm_driver,
#ifdef CONFIG_SPECTRA_ISP
	&cam_ife_csid17x_driver,
	&cam_ife_csid_lite_driver,
	&cam_vfe_driver,
	&isp_driver,
#endif
#ifdef CONFIG_SPECTRA_TFE
	&cam_top_tpg_v1_driver,
	&cam_tfe_driver,
	&cam_tfe_csid530_driver,
#endif
#ifdef CONFIG_SPECTRA_SENSOR
	&cam_res_mgr_driver,
	&cci_driver,
	&csiphy_driver,
	&cam_actuator_platform_driver,
	&cam_sensor_platform_driver,
	&cam_eeprom_platform_driver,
	&cam_ois_platform_driver,
#if IS_REACHABLE(CONFIG_LEDS_QPNP_FLASH_V2)
	&cam_flash_platform_driver,
#endif
#endif
#ifdef CONFIG_SPECTRA_ICP
	&cam_a5_driver,
	&cam_ipe_driver,
	&cam_bps_driver,
	&cam_icp_driver,
#endif
#ifdef CONFIG_SPECTRA_OPE
	&cam_ope_driver,
	&cam_ope_subdev_driver,
#endif
#ifdef CONFIG_SPECTRA_JPEG
	&cam_jpeg_enc_driver,
	&cam_jpeg_dma_driver,
	&jpeg_driver,
#endif
#ifdef CONFIG_SPECTRA_FD
	&cam_fd_hw_driver,
	&cam_fd_driver,
#endif
#ifdef CONFIG_SPECTRA_LRME
	&cam_lrme_hw_driver,
	&cam_lrme_driver,
#endif
#ifdef CONFIG_SPECTRA_CUSTOM
	&cam_custom_hw_sub_mod_driver,
	&cam_custom_csid_driver,
	&custom_driver,
#endif
};

/* Callback to compare device from match list before adding as component */
static int camera_component_compare_dev(struct device *dev, void *data)
{
	return dev == data;
}

/* Add component matches to list for master of aggregate driver */
int camera_component_match_add_drivers(struct device *master_dev,
	struct component_match **match_list)
{
	int i, rc = 0;
	struct platform_device *pdev = NULL;

	if (!master_dev || !match_list) {
		CAM_ERR(CAM_UTIL, "Invalid parameters for component match add");
		rc = -EINVAL;
		goto end;
	}

	for (i = 0; i < ARRAY_SIZE(cam_component_drivers); i++) {
		struct device_driver *drv = &cam_component_drivers[i]->driver;
		struct device *start_dev = NULL, *match_dev;

		while ((match_dev = bus_find_device(&platform_bus_type,
			start_dev, drv, (void *)platform_bus_type.match))) {
			put_device(start_dev);
			pdev = to_platform_device(match_dev);
			CAM_DBG(CAM_UTIL, "Adding matched component:%s",
				pdev->name);
			component_match_add(master_dev, match_list,
				camera_component_compare_dev, match_dev);
			start_dev = match_dev;
		}
		put_device(start_dev);
	}

end:
	return rc;
}

static int camera_verify_submodules(void)
{
	int rc = 0;
	int i, j, num_components;

	for (i = 0; i < ARRAY_SIZE(submodule_table); i++) {
		num_components = submodule_table[i].num_component;
		for (j = 0; j < num_components; j++) {
			if (!submodule_table[i].component[j].init ||
				!submodule_table[i].component[j].exit) {
				CAM_ERR(CAM_UTIL,
					"%s module has init = %ps, exit = %ps",
					submodule_table[i].name,
					submodule_table[i].component[j].init,
					submodule_table[i].component[j].exit);
				rc = -EINVAL;
				goto end;
			}
		}
	}

end:
	return rc;
}

static void __camera_exit(int i, int j)
{
	uint num_exits;

	/* Exit from current submodule */
	for (j -= 1; j >= 0; j--)
		submodule_table[i].component[j].exit();

	/* Exit remaining submodules */
	for (i -= 1; i >= 0; i--) {
		num_exits = submodule_table[i].num_component;
		for (j = num_exits - 1; j >= 0; j--)
			submodule_table[i].component[j].exit();
	}
}

static int camera_init(void)
{
	int rc;
	uint i, j, num_inits;

	rc = camera_verify_submodules();
	if (rc)
		goto end_init;

	/* For Probing all available submodules */
	for (i = 0; i < ARRAY_SIZE(submodule_table); i++) {
		num_inits = submodule_table[i].num_component;
		CAM_DBG(CAM_UTIL, "Number of %s components: %u",
			submodule_table[i].name, num_inits);
		for (j = 0; j < num_inits; j++) {
			rc = submodule_table[i].component[j].init();
			if (rc) {
				CAM_ERR(CAM_UTIL,
					"%s module failure at %ps rc = %d",
					submodule_table[i].name,
					submodule_table[i].component[j].init,
					rc);
				__camera_exit(i, j);
				goto end_init;
			}
		}
	}

	CAM_INFO(CAM_UTIL, "Spectra camera driver initialized!");

end_init:
	return rc;
}

static void camera_exit(void)
{
	__camera_exit(ARRAY_SIZE(submodule_table), 0);

	CAM_INFO(CAM_UTIL, "Spectra camera driver exited!");
}

module_init(camera_init);
module_exit(camera_exit);

MODULE_DESCRIPTION("Spectra camera driver");
MODULE_LICENSE("GPL v2");