| // 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/delay.h> |
| #include <linux/errno.h> |
| #include <linux/gpio/consumer.h> |
| #include <linux/i2c.h> |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/pm_runtime.h> |
| #include <linux/string.h> |
| #include <linux/types.h> |
| |
| #include <media/v4l2-ctrls.h> |
| #include <media/v4l2-device.h> |
| |
| #define GC0310_NATIVE_WIDTH 656 |
| #define GC0310_NATIVE_HEIGHT 496 |
| |
| #define GC0310_FPS 30 |
| #define GC0310_SKIP_FRAMES 3 |
| |
| #define GC0310_FOCAL_LENGTH_NUM 278 /* 2.78mm */ |
| |
| #define GC0310_ID 0xa310 |
| |
| #define GC0310_RESET_RELATED 0xFE |
| #define GC0310_REGISTER_PAGE_0 0x0 |
| #define GC0310_REGISTER_PAGE_3 0x3 |
| |
| /* |
| * GC0310 System control registers |
| */ |
| #define GC0310_SW_STREAM 0x10 |
| |
| #define GC0310_SC_CMMN_CHIP_ID_H 0xf0 |
| #define GC0310_SC_CMMN_CHIP_ID_L 0xf1 |
| |
| #define GC0310_AEC_PK_EXPO_H 0x03 |
| #define GC0310_AEC_PK_EXPO_L 0x04 |
| #define GC0310_AGC_ADJ 0x48 |
| #define GC0310_DGC_ADJ 0x71 |
| #define GC0310_GROUP_ACCESS 0x3208 |
| |
| #define GC0310_H_CROP_START_H 0x09 |
| #define GC0310_H_CROP_START_L 0x0A |
| #define GC0310_V_CROP_START_H 0x0B |
| #define GC0310_V_CROP_START_L 0x0C |
| #define GC0310_H_OUTSIZE_H 0x0F |
| #define GC0310_H_OUTSIZE_L 0x10 |
| #define GC0310_V_OUTSIZE_H 0x0D |
| #define GC0310_V_OUTSIZE_L 0x0E |
| #define GC0310_H_BLANKING_H 0x05 |
| #define GC0310_H_BLANKING_L 0x06 |
| #define GC0310_V_BLANKING_H 0x07 |
| #define GC0310_V_BLANKING_L 0x08 |
| #define GC0310_SH_DELAY 0x11 |
| |
| #define GC0310_START_STREAMING 0x94 /* 8-bit enable */ |
| #define GC0310_STOP_STREAMING 0x0 /* 8-bit disable */ |
| |
| #define to_gc0310_sensor(x) container_of(x, struct gc0310_device, sd) |
| |
| struct gc0310_device { |
| struct v4l2_subdev sd; |
| struct media_pad pad; |
| /* Protect against concurrent changes to controls */ |
| struct mutex input_lock; |
| bool is_streaming; |
| |
| struct gpio_desc *reset; |
| struct gpio_desc *powerdown; |
| |
| struct gc0310_mode { |
| struct v4l2_mbus_framefmt fmt; |
| } mode; |
| |
| struct gc0310_ctrls { |
| struct v4l2_ctrl_handler handler; |
| struct v4l2_ctrl *exposure; |
| struct v4l2_ctrl *gain; |
| } ctrls; |
| }; |
| |
| struct gc0310_reg { |
| u8 reg; |
| u8 val; |
| }; |
| |
| static const struct gc0310_reg gc0310_reset_register[] = { |
| /* System registers */ |
| { 0xfe, 0xf0 }, |
| { 0xfe, 0xf0 }, |
| { 0xfe, 0x00 }, |
| |
| { 0xfc, 0x0e }, /* 4e */ |
| { 0xfc, 0x0e }, /* 16//4e // [0]apwd [6]regf_clk_gate */ |
| { 0xf2, 0x80 }, /* sync output */ |
| { 0xf3, 0x00 }, /* 1f//01 data output */ |
| { 0xf7, 0x33 }, /* f9 */ |
| { 0xf8, 0x05 }, /* 00 */ |
| { 0xf9, 0x0e }, /* 0x8e //0f */ |
| { 0xfa, 0x11 }, |
| |
| /* MIPI */ |
| { 0xfe, 0x03 }, |
| { 0x01, 0x03 }, /* mipi 1lane */ |
| { 0x02, 0x22 }, /* 0x33 */ |
| { 0x03, 0x94 }, |
| { 0x04, 0x01 }, /* fifo_prog */ |
| { 0x05, 0x00 }, /* fifo_prog */ |
| { 0x06, 0x80 }, /* b0 //YUV ISP data */ |
| { 0x11, 0x2a }, /* 1e //LDI set YUV422 */ |
| { 0x12, 0x90 }, /* 00 //04 //00 //04//00 //LWC[7:0] */ |
| { 0x13, 0x02 }, /* 05 //05 //LWC[15:8] */ |
| { 0x15, 0x12 }, /* 0x10 //DPHYY_MODE read_ready */ |
| { 0x17, 0x01 }, |
| { 0x40, 0x08 }, |
| { 0x41, 0x00 }, |
| { 0x42, 0x00 }, |
| { 0x43, 0x00 }, |
| { 0x21, 0x02 }, /* 0x01 */ |
| { 0x22, 0x02 }, /* 0x01 */ |
| { 0x23, 0x01 }, /* 0x05 //Nor:0x05 DOU:0x06 */ |
| { 0x29, 0x00 }, |
| { 0x2A, 0x25 }, /* 0x05 //data zero 0x7a de */ |
| { 0x2B, 0x02 }, |
| |
| { 0xfe, 0x00 }, |
| |
| /* CISCTL */ |
| { 0x00, 0x2f }, /* 2f//0f//02//01 */ |
| { 0x01, 0x0f }, /* 06 */ |
| { 0x02, 0x04 }, |
| { 0x4f, 0x00 }, /* AEC 0FF */ |
| { 0x03, 0x01 }, /* 0x03 //04 */ |
| { 0x04, 0xc0 }, /* 0xe8 //58 */ |
| { 0x05, 0x00 }, |
| { 0x06, 0xb2 }, /* 0x0a //HB */ |
| { 0x07, 0x00 }, |
| { 0x08, 0x0c }, /* 0x89 //VB */ |
| { 0x09, 0x00 }, /* row start */ |
| { 0x0a, 0x00 }, |
| { 0x0b, 0x00 }, /* col start */ |
| { 0x0c, 0x00 }, |
| { 0x0d, 0x01 }, /* height */ |
| { 0x0e, 0xf2 }, /* 0xf7 //height */ |
| { 0x0f, 0x02 }, /* width */ |
| { 0x10, 0x94 }, /* 0xa0 //height */ |
| { 0x17, 0x14 }, |
| { 0x18, 0x1a }, /* 0a//[4]double reset */ |
| { 0x19, 0x14 }, /* AD pipeline */ |
| { 0x1b, 0x48 }, |
| { 0x1e, 0x6b }, /* 3b//col bias */ |
| { 0x1f, 0x28 }, /* 20//00//08//txlow */ |
| { 0x20, 0x89 }, /* 88//0c//[3:2]DA15 */ |
| { 0x21, 0x49 }, /* 48//[3] txhigh */ |
| { 0x22, 0xb0 }, |
| { 0x23, 0x04 }, /* [1:0]vcm_r */ |
| { 0x24, 0x16 }, /* 15 */ |
| { 0x34, 0x20 }, /* [6:4] rsg high//range */ |
| |
| /* BLK */ |
| { 0x26, 0x23 }, /* [1]dark_current_en [0]offset_en */ |
| { 0x28, 0xff }, /* BLK_limie_value */ |
| { 0x29, 0x00 }, /* global offset */ |
| { 0x33, 0x18 }, /* offset_ratio */ |
| { 0x37, 0x20 }, /* dark_current_ratio */ |
| { 0x2a, 0x00 }, |
| { 0x2b, 0x00 }, |
| { 0x2c, 0x00 }, |
| { 0x2d, 0x00 }, |
| { 0x2e, 0x00 }, |
| { 0x2f, 0x00 }, |
| { 0x30, 0x00 }, |
| { 0x31, 0x00 }, |
| { 0x47, 0x80 }, /* a7 */ |
| { 0x4e, 0x66 }, /* select_row */ |
| { 0xa8, 0x02 }, /* win_width_dark, same with crop_win_width */ |
| { 0xa9, 0x80 }, |
| |
| /* ISP */ |
| { 0x40, 0x06 }, /* 0xff //ff //48 */ |
| { 0x41, 0x00 }, /* 0x21 //00//[0]curve_en */ |
| { 0x42, 0x04 }, /* 0xcf //0a//[1]awn_en */ |
| { 0x44, 0x18 }, /* 0x18 //02 */ |
| { 0x46, 0x02 }, /* 0x03 //sync */ |
| { 0x49, 0x03 }, |
| { 0x4c, 0x20 }, /* 00[5]pretect exp */ |
| { 0x50, 0x01 }, /* crop enable */ |
| { 0x51, 0x00 }, |
| { 0x52, 0x00 }, |
| { 0x53, 0x00 }, |
| { 0x54, 0x01 }, |
| { 0x55, 0x01 }, /* crop window height */ |
| { 0x56, 0xf0 }, |
| { 0x57, 0x02 }, /* crop window width */ |
| { 0x58, 0x90 }, |
| |
| /* Gain */ |
| { 0x70, 0x70 }, /* 70 //80//global gain */ |
| { 0x71, 0x20 }, /* pregain gain */ |
| { 0x72, 0x40 }, /* post gain */ |
| { 0x5a, 0x84 }, /* 84//analog gain 0 */ |
| { 0x5b, 0xc9 }, /* c9 */ |
| { 0x5c, 0xed }, /* ed//not use pga gain highest level */ |
| { 0x77, 0x40 }, /* R gain 0x74 //awb gain */ |
| { 0x78, 0x40 }, /* G gain */ |
| { 0x79, 0x40 }, /* B gain 0x5f */ |
| |
| { 0x48, 0x00 }, |
| { 0xfe, 0x01 }, |
| { 0x0a, 0x45 }, /* [7]col gain mode */ |
| |
| { 0x3e, 0x40 }, |
| { 0x3f, 0x5c }, |
| { 0x40, 0x7b }, |
| { 0x41, 0xbd }, |
| { 0x42, 0xf6 }, |
| { 0x43, 0x63 }, |
| { 0x03, 0x60 }, |
| { 0x44, 0x03 }, |
| |
| /* Dark / Sun mode related */ |
| { 0xfe, 0x01 }, |
| { 0x45, 0xa4 }, /* 0xf7 */ |
| { 0x46, 0xf0 }, /* 0xff //f0//sun value th */ |
| { 0x48, 0x03 }, /* sun mode */ |
| { 0x4f, 0x60 }, /* sun_clamp */ |
| { 0xfe, 0x00 }, |
| }; |
| |
| static const struct gc0310_reg gc0310_VGA_30fps[] = { |
| { 0xfe, 0x00 }, |
| { 0x0d, 0x01 }, /* height */ |
| { 0x0e, 0xf2 }, /* 0xf7 //height */ |
| { 0x0f, 0x02 }, /* width */ |
| { 0x10, 0x94 }, /* 0xa0 //height */ |
| |
| { 0x50, 0x01 }, /* crop enable */ |
| { 0x51, 0x00 }, |
| { 0x52, 0x00 }, |
| { 0x53, 0x00 }, |
| { 0x54, 0x01 }, |
| { 0x55, 0x01 }, /* crop window height */ |
| { 0x56, 0xf0 }, |
| { 0x57, 0x02 }, /* crop window width */ |
| { 0x58, 0x90 }, |
| |
| { 0xfe, 0x03 }, |
| { 0x12, 0x90 }, /* 00 //04 //00 //04//00 //LWC[7:0] */ |
| { 0x13, 0x02 }, /* 05 //05 //LWC[15:8] */ |
| |
| { 0xfe, 0x00 }, |
| }; |
| |
| /* |
| * 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_state_get_format(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 = pm_runtime_get_sync(&client->dev); |
| if (ret >= 0) |
| ret = i2c_smbus_read_word_swapped(client, GC0310_SC_CMMN_CHIP_ID_H); |
| pm_runtime_put(&client->dev); |
| 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 (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; |
| mutex_unlock(&dev->input_lock); |
| return ret; |
| } |
| |
| static int gc0310_get_frame_interval(struct v4l2_subdev *sd, |
| struct v4l2_subdev_state *sd_state, |
| struct v4l2_subdev_frame_interval *interval) |
| { |
| /* |
| * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2 |
| * subdev active state API. |
| */ |
| if (interval->which != V4L2_SUBDEV_FORMAT_ACTIVE) |
| return -EINVAL; |
| |
| 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, |
| }; |
| |
| 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, |
| .get_frame_interval = gc0310_get_frame_interval, |
| }; |
| |
| 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"); |
| |
| v4l2_async_unregister_subdev(sd); |
| media_entity_cleanup(&dev->sd.entity); |
| v4l2_ctrl_handler_free(&dev->ctrls.handler); |
| mutex_destroy(&dev->input_lock); |
| pm_runtime_disable(&client->dev); |
| } |
| |
| static int gc0310_probe(struct i2c_client *client) |
| { |
| struct fwnode_handle *ep_fwnode; |
| struct gc0310_device *dev; |
| int ret; |
| |
| /* |
| * Sometimes the fwnode graph is initialized by the bridge driver. |
| * Bridge drivers doing this may also add GPIO mappings, wait for this. |
| */ |
| ep_fwnode = fwnode_graph_get_next_endpoint(dev_fwnode(&client->dev), NULL); |
| if (!ep_fwnode) |
| return dev_err_probe(&client->dev, -EPROBE_DEFER, "waiting for fwnode graph endpoint\n"); |
| |
| fwnode_handle_put(ep_fwnode); |
| |
| dev = devm_kzalloc(&client->dev, sizeof(*dev), GFP_KERNEL); |
| if (!dev) |
| return -ENOMEM; |
| |
| 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_detect(client); |
| 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 = v4l2_async_register_subdev_sensor(&dev->sd); |
| 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[] = { |
| {"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 = 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"); |