// SPDX-License-Identifier: GPL-2.0 /* * camss.c * * Qualcomm MSM Camera Subsystem - Core * * Copyright (c) 2015, The Linux Foundation. All rights reserved. * Copyright (C) 2015-2018 Linaro Ltd. */ #include <linux/clk.h> #include <linux/interconnect.h> #include <linux/media-bus-format.h> #include <linux/media.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/of.h> #include <linux/of_device.h> #include <linux/of_graph.h> #include <linux/pm_runtime.h> #include <linux/pm_domain.h> #include <linux/slab.h> #include <linux/videodev2.h> #include <media/media-device.h> #include <media/v4l2-async.h> #include <media/v4l2-device.h> #include <media/v4l2-mc.h> #include <media/v4l2-fwnode.h> #include "camss.h" #define CAMSS_CLOCK_MARGIN_NUMERATOR … #define CAMSS_CLOCK_MARGIN_DENOMINATOR … static const struct parent_dev_ops vfe_parent_dev_ops; static const struct camss_subdev_resources csiphy_res_8x16[] = …; static const struct camss_subdev_resources csid_res_8x16[] = …; static const struct camss_subdev_resources ispif_res_8x16 = …; static const struct camss_subdev_resources vfe_res_8x16[] = …; static const struct camss_subdev_resources csiphy_res_8x96[] = …; static const struct camss_subdev_resources csid_res_8x96[] = …; static const struct camss_subdev_resources ispif_res_8x96 = …; static const struct camss_subdev_resources vfe_res_8x96[] = …; static const struct camss_subdev_resources csiphy_res_660[] = …; static const struct camss_subdev_resources csid_res_660[] = …; static const struct camss_subdev_resources ispif_res_660 = …; static const struct camss_subdev_resources vfe_res_660[] = …; static const struct camss_subdev_resources csiphy_res_845[] = …; static const struct camss_subdev_resources csid_res_845[] = …; static const struct camss_subdev_resources vfe_res_845[] = …; static const struct camss_subdev_resources csiphy_res_8250[] = …; static const struct camss_subdev_resources csid_res_8250[] = …; static const struct camss_subdev_resources vfe_res_8250[] = …; static const struct resources_icc icc_res_sm8250[] = …; static const struct camss_subdev_resources csiphy_res_sc8280xp[] = …; static const struct camss_subdev_resources csid_res_sc8280xp[] = …; static const struct camss_subdev_resources vfe_res_sc8280xp[] = …; static const struct resources_icc icc_res_sc8280xp[] = …; /* * camss_add_clock_margin - Add margin to clock frequency rate * @rate: Clock frequency rate * * When making calculations with physical clock frequency values * some safety margin must be added. Add it. */ inline void camss_add_clock_margin(u64 *rate) { … } /* * camss_enable_clocks - Enable multiple clocks * @nclocks: Number of clocks in clock array * @clock: Clock array * @dev: Device * * Return 0 on success or a negative error code otherwise */ int camss_enable_clocks(int nclocks, struct camss_clock *clock, struct device *dev) { … } /* * camss_disable_clocks - Disable multiple clocks * @nclocks: Number of clocks in clock array * @clock: Clock array */ void camss_disable_clocks(int nclocks, struct camss_clock *clock) { … } /* * camss_find_sensor - Find a linked media entity which represents a sensor * @entity: Media entity to start searching from * * Return a pointer to sensor media entity or NULL if not found */ struct media_entity *camss_find_sensor(struct media_entity *entity) { … } /** * camss_get_link_freq - Get link frequency from sensor * @entity: Media entity in the current pipeline * @bpp: Number of bits per pixel for the current format * @lanes: Number of lanes in the link to the sensor * * Return link frequency on success or a negative error code otherwise */ s64 camss_get_link_freq(struct media_entity *entity, unsigned int bpp, unsigned int lanes) { … } /* * camss_get_pixel_clock - Get pixel clock rate from sensor * @entity: Media entity in the current pipeline * @pixel_clock: Received pixel clock value * * Return 0 on success or a negative error code otherwise */ int camss_get_pixel_clock(struct media_entity *entity, u64 *pixel_clock) { … } int camss_pm_domain_on(struct camss *camss, int id) { … } void camss_pm_domain_off(struct camss *camss, int id) { … } static int vfe_parent_dev_ops_get(struct camss *camss, int id) { … } static int vfe_parent_dev_ops_put(struct camss *camss, int id) { … } static void __iomem *vfe_parent_dev_ops_get_base_address(struct camss *camss, int id) { … } static const struct parent_dev_ops vfe_parent_dev_ops = …; /* * camss_of_parse_endpoint_node - Parse port endpoint node * @dev: Device * @node: Device node to be parsed * @csd: Parsed data from port endpoint node * * Return 0 on success or a negative error code on failure */ static int camss_of_parse_endpoint_node(struct device *dev, struct device_node *node, struct camss_async_subdev *csd) { … } /* * camss_of_parse_ports - Parse ports node * @dev: Device * @notifier: v4l2_device notifier data * * Return number of "port" nodes found in "ports" node */ static int camss_of_parse_ports(struct camss *camss) { … } /* * camss_init_subdevices - Initialize subdev structures and resources * @camss: CAMSS device * * Return 0 on success or a negative error code on failure */ static int camss_init_subdevices(struct camss *camss) { … } /* * camss_link_entities - Register subdev nodes and create links * @camss: CAMSS device * * Return 0 on success or a negative error code on failure */ static int camss_link_entities(struct camss *camss) { … } /* * camss_register_entities - Register subdev nodes and create links * @camss: CAMSS device * * Return 0 on success or a negative error code on failure */ static int camss_register_entities(struct camss *camss) { … } /* * camss_unregister_entities - Unregister subdev nodes * @camss: CAMSS device * * Return 0 on success or a negative error code on failure */ static void camss_unregister_entities(struct camss *camss) { … } static int camss_subdev_notifier_bound(struct v4l2_async_notifier *async, struct v4l2_subdev *subdev, struct v4l2_async_connection *asd) { … } static int camss_subdev_notifier_complete(struct v4l2_async_notifier *async) { … } static const struct v4l2_async_notifier_operations camss_subdev_notifier_ops = …; static const struct media_device_ops camss_media_ops = …; static int camss_configure_pd(struct camss *camss) { … } static int camss_icc_get(struct camss *camss) { … } static void camss_genpd_subdevice_cleanup(struct camss *camss) { … } static void camss_genpd_cleanup(struct camss *camss) { … } /* * camss_probe - Probe CAMSS platform device * @pdev: Pointer to CAMSS platform device * * Return 0 on success or a negative error code on failure */ static int camss_probe(struct platform_device *pdev) { … } void camss_delete(struct camss *camss) { … } /* * camss_remove - Remove CAMSS platform device * @pdev: Pointer to CAMSS platform device * * Always returns 0. */ static void camss_remove(struct platform_device *pdev) { … } static const struct camss_resources msm8916_resources = …; static const struct camss_resources msm8996_resources = …; static const struct camss_resources sdm660_resources = …; static const struct camss_resources sdm845_resources = …; static const struct camss_resources sm8250_resources = …; static const struct camss_resources sc8280xp_resources = …; static const struct of_device_id camss_dt_match[] = …; MODULE_DEVICE_TABLE(of, camss_dt_match); static int __maybe_unused camss_runtime_suspend(struct device *dev) { … } static int __maybe_unused camss_runtime_resume(struct device *dev) { … } static const struct dev_pm_ops camss_pm_ops = …; static struct platform_driver qcom_camss_driver = …; module_platform_driver(…) …; MODULE_ALIAS(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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