// SPDX-License-Identifier: GPL-2.0-only /* * drivers/media/i2c/ccs/ccs-core.c * * Generic driver for MIPI CCS/SMIA/SMIA++ compliant camera sensors * * Copyright (C) 2020 Intel Corporation * Copyright (C) 2010--2012 Nokia Corporation * Contact: Sakari Ailus <[email protected]> * * Based on smiapp driver by Vimarsh Zutshi * Based on jt8ev1.c by Vimarsh Zutshi * Based on smia-sensor.c by Tuukka Toivonen <[email protected]> */ #include <linux/clk.h> #include <linux/delay.h> #include <linux/device.h> #include <linux/firmware.h> #include <linux/gpio/consumer.h> #include <linux/module.h> #include <linux/pm_runtime.h> #include <linux/property.h> #include <linux/regulator/consumer.h> #include <linux/slab.h> #include <linux/smiapp.h> #include <linux/v4l2-mediabus.h> #include <media/v4l2-cci.h> #include <media/v4l2-device.h> #include <media/v4l2-fwnode.h> #include <uapi/linux/ccs.h> #include "ccs.h" #define CCS_ALIGN_DIM(dim, flags) … static struct ccs_limit_offset { … } ccs_limit_offsets[CCS_L_LAST + 1]; /* * ccs_module_idents - supported camera modules */ static const struct ccs_module_ident ccs_module_idents[] = …; #define CCS_DEVICE_FLAG_IS_SMIA … struct ccs_device { … }; static const char * const ccs_regulators[] = …; /* * * Dynamic Capability Identification * */ static void ccs_assign_limit(void *ptr, unsigned int width, u32 val) { … } static int ccs_limit_ptr(struct ccs_sensor *sensor, unsigned int limit, unsigned int offset, void **__ptr) { … } void ccs_replace_limit(struct ccs_sensor *sensor, unsigned int limit, unsigned int offset, u32 val) { … } u32 ccs_get_limit(struct ccs_sensor *sensor, unsigned int limit, unsigned int offset) { … } static int ccs_read_all_limits(struct ccs_sensor *sensor) { … } static int ccs_read_frame_fmt(struct ccs_sensor *sensor) { … } static int ccs_pll_configure(struct ccs_sensor *sensor) { … } static int ccs_pll_try(struct ccs_sensor *sensor, struct ccs_pll *pll) { … } static int ccs_pll_update(struct ccs_sensor *sensor) { … } /* * * V4L2 Controls handling * */ static void __ccs_update_exposure_limits(struct ccs_sensor *sensor) { … } /* * Order matters. * * 1. Bits-per-pixel, descending. * 2. Bits-per-pixel compressed, descending. * 3. Pixel order, same as in pixel_order_str. Formats for all four pixel * orders must be defined. */ static const struct ccs_csi_data_format ccs_csi_data_formats[] = …; static const char *pixel_order_str[] = …; #define to_csi_format_idx(fmt) … static u32 ccs_pixel_order(struct ccs_sensor *sensor) { … } static void ccs_update_mbus_formats(struct ccs_sensor *sensor) { … } static const char * const ccs_test_patterns[] = …; static int ccs_set_ctrl(struct v4l2_ctrl *ctrl) { … } static const struct v4l2_ctrl_ops ccs_ctrl_ops = …; static int ccs_init_controls(struct ccs_sensor *sensor) { … } /* * For controls that require information on available media bus codes * and linke frequencies. */ static int ccs_init_late_controls(struct ccs_sensor *sensor) { … } static void ccs_free_controls(struct ccs_sensor *sensor) { … } static int ccs_get_mbus_formats(struct ccs_sensor *sensor) { … } static void ccs_update_blanking(struct ccs_sensor *sensor) { … } static int ccs_pll_blanking_update(struct ccs_sensor *sensor) { … } /* * * SMIA++ NVM handling * */ static int ccs_read_nvm_page(struct ccs_sensor *sensor, u32 p, u8 *nvm, u8 *status) { … } static int ccs_read_nvm(struct ccs_sensor *sensor, unsigned char *nvm, size_t nvm_size) { … } /* * * SMIA++ CCI address control * */ static int ccs_change_cci_addr(struct ccs_sensor *sensor) { … } /* * * SMIA++ Mode Control * */ static int ccs_setup_flash_strobe(struct ccs_sensor *sensor) { … } /* ----------------------------------------------------------------------------- * Power management */ static int ccs_write_msr_regs(struct ccs_sensor *sensor) { … } static int ccs_update_phy_ctrl(struct ccs_sensor *sensor) { … } static int ccs_power_on(struct device *dev) { … } static int ccs_power_off(struct device *dev) { … } /* ----------------------------------------------------------------------------- * Video stream management */ static int ccs_start_streaming(struct ccs_sensor *sensor) { … } static int ccs_stop_streaming(struct ccs_sensor *sensor) { … } /* ----------------------------------------------------------------------------- * V4L2 subdev video operations */ static int ccs_pm_get_init(struct ccs_sensor *sensor) { … } static int ccs_set_stream(struct v4l2_subdev *subdev, int enable) { … } static int ccs_pre_streamon(struct v4l2_subdev *subdev, u32 flags) { … } static int ccs_post_streamoff(struct v4l2_subdev *subdev) { … } static int ccs_enum_mbus_code(struct v4l2_subdev *subdev, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_mbus_code_enum *code) { … } static u32 __ccs_get_mbus_code(struct v4l2_subdev *subdev, unsigned int pad) { … } static int __ccs_get_format(struct v4l2_subdev *subdev, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt) { … } static int ccs_get_format(struct v4l2_subdev *subdev, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt) { … } static void ccs_get_crop_compose(struct v4l2_subdev *subdev, struct v4l2_subdev_state *sd_state, struct v4l2_rect **crops, struct v4l2_rect **comps) { … } /* Changes require propagation only on sink pad. */ static void ccs_propagate(struct v4l2_subdev *subdev, struct v4l2_subdev_state *sd_state, int which, int target) { … } static const struct ccs_csi_data_format *ccs_validate_csi_data_format(struct ccs_sensor *sensor, u32 code) { … } static int ccs_set_format_source(struct v4l2_subdev *subdev, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt) { … } static int ccs_set_format(struct v4l2_subdev *subdev, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt) { … } /* * Calculate goodness of scaled image size compared to expected image * size and flags provided. */ #define SCALING_GOODNESS … #define SCALING_GOODNESS_EXTREME … static int scaling_goodness(struct v4l2_subdev *subdev, int w, int ask_w, int h, int ask_h, u32 flags) { … } static void ccs_set_compose_binner(struct v4l2_subdev *subdev, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_selection *sel, struct v4l2_rect **crops, struct v4l2_rect *comp) { … } /* * Calculate best scaling ratio and mode for given output resolution. * * Try all of these: horizontal ratio, vertical ratio and smallest * size possible (horizontally). * * Also try whether horizontal scaler or full scaler gives a better * result. */ static void ccs_set_compose_scaler(struct v4l2_subdev *subdev, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_selection *sel, struct v4l2_rect **crops, struct v4l2_rect *comp) { … } /* We're only called on source pads. This function sets scaling. */ static int ccs_set_compose(struct v4l2_subdev *subdev, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_selection *sel) { … } static int ccs_sel_supported(struct v4l2_subdev *subdev, struct v4l2_subdev_selection *sel) { … } static int ccs_set_crop(struct v4l2_subdev *subdev, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_selection *sel) { … } static void ccs_get_native_size(struct ccs_subdev *ssd, struct v4l2_rect *r) { … } static int ccs_get_selection(struct v4l2_subdev *subdev, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_selection *sel) { … } static int ccs_set_selection(struct v4l2_subdev *subdev, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_selection *sel) { … } static int ccs_get_skip_frames(struct v4l2_subdev *subdev, u32 *frames) { … } static int ccs_get_skip_top_lines(struct v4l2_subdev *subdev, u32 *lines) { … } /* ----------------------------------------------------------------------------- * sysfs attributes */ static ssize_t nvm_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR_RO(nvm); static ssize_t ident_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR_RO(ident); /* ----------------------------------------------------------------------------- * V4L2 subdev core operations */ static int ccs_identify_module(struct ccs_sensor *sensor) { … } static const struct v4l2_subdev_ops ccs_ops; static const struct media_entity_operations ccs_entity_ops; static int ccs_register_subdev(struct ccs_sensor *sensor, struct ccs_subdev *ssd, struct ccs_subdev *sink_ssd, u16 source_pad, u16 sink_pad, u32 link_flags) { … } static void ccs_unregistered(struct v4l2_subdev *subdev) { … } static int ccs_registered(struct v4l2_subdev *subdev) { … } static void ccs_cleanup(struct ccs_sensor *sensor) { … } static int ccs_init_subdev(struct ccs_sensor *sensor, struct ccs_subdev *ssd, const char *name, unsigned short num_pads, u32 function, const char *lock_name, struct lock_class_key *lock_key) { … } static int ccs_init_state(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state) { … } static const struct v4l2_subdev_video_ops ccs_video_ops = …; static const struct v4l2_subdev_pad_ops ccs_pad_ops = …; static const struct v4l2_subdev_sensor_ops ccs_sensor_ops = …; static const struct v4l2_subdev_ops ccs_ops = …; static const struct media_entity_operations ccs_entity_ops = …; static const struct v4l2_subdev_internal_ops ccs_internal_src_ops = …; /* ----------------------------------------------------------------------------- * I2C Driver */ static int ccs_get_hwconfig(struct ccs_sensor *sensor, struct device *dev) { … } static int ccs_firmware_name(struct i2c_client *client, struct ccs_sensor *sensor, char *filename, size_t filename_size, bool is_module) { … } static int ccs_probe(struct i2c_client *client) { … } static void ccs_remove(struct i2c_client *client) { … } static const struct ccs_device smia_device = …; static const struct ccs_device ccs_device = …; static const struct acpi_device_id ccs_acpi_table[] = …; MODULE_DEVICE_TABLE(acpi, ccs_acpi_table); static const struct of_device_id ccs_of_table[] = …; MODULE_DEVICE_TABLE(of, ccs_of_table); static const struct dev_pm_ops ccs_pm_ops = …; static struct i2c_driver ccs_i2c_driver = …; static int ccs_module_init(void) { … } static void ccs_module_cleanup(void) { … } module_init(…) …; module_exit(ccs_module_cleanup); MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; MODULE_ALIAS(…) …;
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