| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Mauro Carvalho Chehab | 1224 | 57.01% | 3 | 18.75% |
| Hans de Goede | 902 | 42.01% | 10 | 62.50% |
| Deepak R Varma | 12 | 0.56% | 1 | 6.25% |
| Tomi Valkeinen | 8 | 0.37% | 1 | 6.25% |
| Uwe Kleine-König | 1 | 0.05% | 1 | 6.25% |
| Total | 2147 | 16 |
// SPDX-License-Identifier: GPL-2.0 /* * Support for GalaxyCore GC0310 VGA camera sensor. * * Copyright (c) 2013 Intel Corporation. All Rights Reserved. * Copyright (c) 2023 Hans de Goede <hdegoede@redhat.com> * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License version * 2 as published by the Free Software Foundation. * * 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 <linux/module.h> #include <linux/types.h> #include <linux/kernel.h> #include <linux/mm.h> #include <linux/string.h> #include <linux/errno.h> #include <linux/init.h> #include <linux/kmod.h> #include <linux/device.h> #include <linux/delay.h> #include <linux/slab.h> #include <linux/gpio/consumer.h> #include <linux/gpio/machine.h> #include <linux/i2c.h> #include <linux/moduleparam.h> #include <linux/pm_runtime.h> #include <media/v4l2-device.h> #include <linux/io.h> #include "../include/linux/atomisp_gmin_platform.h" #include "gc0310.h" /* * gc0310_write_reg_array - Initializes a list of GC0310 registers * @client: i2c driver client structure * @reglist: list of registers to be written * @count: number of register, value pairs in the list */ static int gc0310_write_reg_array(struct i2c_client *client, const struct gc0310_reg *reglist, int count) { int i, err; for (i = 0; i < count; i++) { err = i2c_smbus_write_byte_data(client, reglist[i].reg, reglist[i].val); if (err) { dev_err(&client->dev, "write error: wrote 0x%x to offset 0x%x error %d", reglist[i].val, reglist[i].reg, err); return err; } } return 0; } static int gc0310_exposure_set(struct gc0310_device *dev, u32 exp) { struct i2c_client *client = v4l2_get_subdevdata(&dev->sd); return i2c_smbus_write_word_swapped(client, GC0310_AEC_PK_EXPO_H, exp); } static int gc0310_gain_set(struct gc0310_device *dev, u32 gain) { struct i2c_client *client = v4l2_get_subdevdata(&dev->sd); u8 again, dgain; int ret; /* Taken from original driver, this never sets dgain lower then 32? */ /* Change 0 - 95 to 32 - 127 */ gain += 32; if (gain < 64) { again = 0x0; /* sqrt(2) */ dgain = gain; } else { again = 0x2; /* 2 * sqrt(2) */ dgain = gain / 2; } ret = i2c_smbus_write_byte_data(client, GC0310_AGC_ADJ, again); if (ret) return ret; return i2c_smbus_write_byte_data(client, GC0310_DGC_ADJ, dgain); } static int gc0310_s_ctrl(struct v4l2_ctrl *ctrl) { struct gc0310_device *dev = container_of(ctrl->handler, struct gc0310_device, ctrls.handler); int ret; /* Only apply changes to the controls if the device is powered up */ if (!pm_runtime_get_if_in_use(dev->sd.dev)) return 0; switch (ctrl->id) { case V4L2_CID_EXPOSURE: ret = gc0310_exposure_set(dev, ctrl->val); break; case V4L2_CID_GAIN: ret = gc0310_gain_set(dev, ctrl->val); break; default: ret = -EINVAL; break; } pm_runtime_put(dev->sd.dev); return ret; } static const struct v4l2_ctrl_ops ctrl_ops = { .s_ctrl = gc0310_s_ctrl, }; static struct v4l2_mbus_framefmt * gc0310_get_pad_format(struct gc0310_device *dev, struct v4l2_subdev_state *state, unsigned int pad, enum v4l2_subdev_format_whence which) { if (which == V4L2_SUBDEV_FORMAT_TRY) return v4l2_subdev_get_try_format(&dev->sd, state, pad); return &dev->mode.fmt; } /* The GC0310 currently only supports 1 fixed fmt */ static void gc0310_fill_format(struct v4l2_mbus_framefmt *fmt) { memset(fmt, 0, sizeof(*fmt)); fmt->width = GC0310_NATIVE_WIDTH; fmt->height = GC0310_NATIVE_HEIGHT; fmt->field = V4L2_FIELD_NONE; fmt->code = MEDIA_BUS_FMT_SGRBG8_1X8; } static int gc0310_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *format) { struct gc0310_device *dev = to_gc0310_sensor(sd); struct v4l2_mbus_framefmt *fmt; fmt = gc0310_get_pad_format(dev, sd_state, format->pad, format->which); gc0310_fill_format(fmt); format->format = *fmt; return 0; } static int gc0310_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *format) { struct gc0310_device *dev = to_gc0310_sensor(sd); struct v4l2_mbus_framefmt *fmt; fmt = gc0310_get_pad_format(dev, sd_state, format->pad, format->which); format->format = *fmt; return 0; } static int gc0310_detect(struct i2c_client *client) { struct i2c_adapter *adapter = client->adapter; int ret; if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) return -ENODEV; ret = i2c_smbus_read_word_swapped(client, GC0310_SC_CMMN_CHIP_ID_H); if (ret < 0) { dev_err(&client->dev, "read sensor_id failed: %d\n", ret); return -ENODEV; } dev_dbg(&client->dev, "sensor ID = 0x%x\n", ret); if (ret != GC0310_ID) { dev_err(&client->dev, "sensor ID error, read id = 0x%x, target id = 0x%x\n", ret, GC0310_ID); return -ENODEV; } dev_dbg(&client->dev, "detect gc0310 success\n"); return 0; } static int gc0310_s_stream(struct v4l2_subdev *sd, int enable) { struct gc0310_device *dev = to_gc0310_sensor(sd); struct i2c_client *client = v4l2_get_subdevdata(sd); int ret = 0; dev_dbg(&client->dev, "%s S enable=%d\n", __func__, enable); mutex_lock(&dev->input_lock); if (dev->is_streaming == enable) { dev_warn(&client->dev, "stream already %s\n", enable ? "started" : "stopped"); goto error_unlock; } if (enable) { ret = pm_runtime_get_sync(&client->dev); if (ret < 0) goto error_power_down; msleep(100); ret = gc0310_write_reg_array(client, gc0310_reset_register, ARRAY_SIZE(gc0310_reset_register)); if (ret) goto error_power_down; ret = gc0310_write_reg_array(client, gc0310_VGA_30fps, ARRAY_SIZE(gc0310_VGA_30fps)); if (ret) goto error_power_down; /* restore value of all ctrls */ ret = __v4l2_ctrl_handler_setup(&dev->ctrls.handler); if (ret) goto error_power_down; /* enable per frame MIPI and sensor ctrl reset */ ret = i2c_smbus_write_byte_data(client, 0xFE, 0x30); if (ret) goto error_power_down; } ret = i2c_smbus_write_byte_data(client, GC0310_RESET_RELATED, GC0310_REGISTER_PAGE_3); if (ret) goto error_power_down; ret = i2c_smbus_write_byte_data(client, GC0310_SW_STREAM, enable ? GC0310_START_STREAMING : GC0310_STOP_STREAMING); if (ret) goto error_power_down; ret = i2c_smbus_write_byte_data(client, GC0310_RESET_RELATED, GC0310_REGISTER_PAGE_0); if (ret) goto error_power_down; if (!enable) pm_runtime_put(&client->dev); dev->is_streaming = enable; mutex_unlock(&dev->input_lock); return 0; error_power_down: pm_runtime_put(&client->dev); dev->is_streaming = false; error_unlock: mutex_unlock(&dev->input_lock); return ret; } static int gc0310_s_config(struct v4l2_subdev *sd) { struct i2c_client *client = v4l2_get_subdevdata(sd); int ret; ret = pm_runtime_get_sync(&client->dev); if (ret >= 0) ret = gc0310_detect(client); pm_runtime_put(&client->dev); return ret; } static int gc0310_g_frame_interval(struct v4l2_subdev *sd, struct v4l2_subdev_frame_interval *interval) { interval->interval.numerator = 1; interval->interval.denominator = GC0310_FPS; return 0; } static int gc0310_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_mbus_code_enum *code) { /* We support only a single format */ if (code->index) return -EINVAL; code->code = MEDIA_BUS_FMT_SGRBG8_1X8; return 0; } static int gc0310_enum_frame_size(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_frame_size_enum *fse) { /* We support only a single resolution */ if (fse->index) return -EINVAL; fse->min_width = GC0310_NATIVE_WIDTH; fse->max_width = GC0310_NATIVE_WIDTH; fse->min_height = GC0310_NATIVE_HEIGHT; fse->max_height = GC0310_NATIVE_HEIGHT; return 0; } static int gc0310_g_skip_frames(struct v4l2_subdev *sd, u32 *frames) { *frames = GC0310_SKIP_FRAMES; return 0; } static const struct v4l2_subdev_sensor_ops gc0310_sensor_ops = { .g_skip_frames = gc0310_g_skip_frames, }; static const struct v4l2_subdev_video_ops gc0310_video_ops = { .s_stream = gc0310_s_stream, .g_frame_interval = gc0310_g_frame_interval, }; static const struct v4l2_subdev_pad_ops gc0310_pad_ops = { .enum_mbus_code = gc0310_enum_mbus_code, .enum_frame_size = gc0310_enum_frame_size, .get_fmt = gc0310_get_fmt, .set_fmt = gc0310_set_fmt, }; static const struct v4l2_subdev_ops gc0310_ops = { .video = &gc0310_video_ops, .pad = &gc0310_pad_ops, .sensor = &gc0310_sensor_ops, }; static int gc0310_init_controls(struct gc0310_device *dev) { struct v4l2_ctrl_handler *hdl = &dev->ctrls.handler; v4l2_ctrl_handler_init(hdl, 2); /* Use the same lock for controls as for everything else */ hdl->lock = &dev->input_lock; dev->sd.ctrl_handler = hdl; dev->ctrls.exposure = v4l2_ctrl_new_std(hdl, &ctrl_ops, V4L2_CID_EXPOSURE, 0, 4095, 1, 1023); /* 32 steps at base gain 1 + 64 half steps at base gain 2 */ dev->ctrls.gain = v4l2_ctrl_new_std(hdl, &ctrl_ops, V4L2_CID_GAIN, 0, 95, 1, 31); return hdl->error; } static void gc0310_remove(struct i2c_client *client) { struct v4l2_subdev *sd = i2c_get_clientdata(client); struct gc0310_device *dev = to_gc0310_sensor(sd); dev_dbg(&client->dev, "gc0310_remove...\n"); atomisp_unregister_subdev(sd); v4l2_device_unregister_subdev(sd); media_entity_cleanup(&dev->sd.entity); v4l2_ctrl_handler_free(&dev->ctrls.handler); pm_runtime_disable(&client->dev); kfree(dev); } static int gc0310_probe(struct i2c_client *client) { struct gc0310_device *dev; int ret; dev = devm_kzalloc(&client->dev, sizeof(*dev), GFP_KERNEL); if (!dev) return -ENOMEM; ret = v4l2_get_acpi_sensor_info(&client->dev, NULL); if (ret) return ret; dev->reset = devm_gpiod_get(&client->dev, "reset", GPIOD_OUT_HIGH); if (IS_ERR(dev->reset)) return dev_err_probe(&client->dev, PTR_ERR(dev->reset), "getting reset GPIO\n"); dev->powerdown = devm_gpiod_get(&client->dev, "powerdown", GPIOD_OUT_HIGH); if (IS_ERR(dev->powerdown)) return dev_err_probe(&client->dev, PTR_ERR(dev->powerdown), "getting powerdown GPIO\n"); mutex_init(&dev->input_lock); v4l2_i2c_subdev_init(&dev->sd, client, &gc0310_ops); gc0310_fill_format(&dev->mode.fmt); pm_runtime_set_suspended(&client->dev); pm_runtime_enable(&client->dev); pm_runtime_set_autosuspend_delay(&client->dev, 1000); pm_runtime_use_autosuspend(&client->dev); ret = gc0310_s_config(&dev->sd); if (ret) { gc0310_remove(client); return ret; } dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; dev->pad.flags = MEDIA_PAD_FL_SOURCE; dev->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; ret = gc0310_init_controls(dev); if (ret) { gc0310_remove(client); return ret; } ret = media_entity_pads_init(&dev->sd.entity, 1, &dev->pad); if (ret) { gc0310_remove(client); return ret; } ret = atomisp_register_sensor_no_gmin(&dev->sd, 1, ATOMISP_INPUT_FORMAT_RAW_8, atomisp_bayer_order_grbg); if (ret) { gc0310_remove(client); return ret; } return 0; } static int gc0310_suspend(struct device *dev) { struct v4l2_subdev *sd = dev_get_drvdata(dev); struct gc0310_device *gc0310_dev = to_gc0310_sensor(sd); gpiod_set_value_cansleep(gc0310_dev->powerdown, 1); gpiod_set_value_cansleep(gc0310_dev->reset, 1); return 0; } static int gc0310_resume(struct device *dev) { struct v4l2_subdev *sd = dev_get_drvdata(dev); struct gc0310_device *gc0310_dev = to_gc0310_sensor(sd); usleep_range(10000, 15000); gpiod_set_value_cansleep(gc0310_dev->reset, 0); usleep_range(10000, 15000); gpiod_set_value_cansleep(gc0310_dev->powerdown, 0); return 0; } static DEFINE_RUNTIME_DEV_PM_OPS(gc0310_pm_ops, gc0310_suspend, gc0310_resume, NULL); static const struct acpi_device_id gc0310_acpi_match[] = { {"XXGC0310"}, {"INT0310"}, {}, }; MODULE_DEVICE_TABLE(acpi, gc0310_acpi_match); static struct i2c_driver gc0310_driver = { .driver = { .name = "gc0310", .pm = pm_sleep_ptr(&gc0310_pm_ops), .acpi_match_table = gc0310_acpi_match, }, .probe_new = gc0310_probe, .remove = gc0310_remove, }; module_i2c_driver(gc0310_driver); MODULE_AUTHOR("Lai, Angie <angie.lai@intel.com>"); MODULE_DESCRIPTION("A low-level driver for GalaxyCore GC0310 sensors"); MODULE_LICENSE("GPL");
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with Cregit http://github.com/cregit/cregit
Version 2.0-RC1