1f5fbb83fSMauro Carvalho Chehab // SPDX-License-Identifier: GPL-2.0 2ad85094bSMauro Carvalho Chehab /* 3ad85094bSMauro Carvalho Chehab * Support for GalaxyCore GC0310 VGA camera sensor. 4ad85094bSMauro Carvalho Chehab * 5ad85094bSMauro Carvalho Chehab * Copyright (c) 2013 Intel Corporation. All Rights Reserved. 6ad85094bSMauro Carvalho Chehab * 7ad85094bSMauro Carvalho Chehab * This program is free software; you can redistribute it and/or 8ad85094bSMauro Carvalho Chehab * modify it under the terms of the GNU General Public License version 9ad85094bSMauro Carvalho Chehab * 2 as published by the Free Software Foundation. 10ad85094bSMauro Carvalho Chehab * 11ad85094bSMauro Carvalho Chehab * This program is distributed in the hope that it will be useful, 12ad85094bSMauro Carvalho Chehab * but WITHOUT ANY WARRANTY; without even the implied warranty of 13ad85094bSMauro Carvalho Chehab * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14ad85094bSMauro Carvalho Chehab * GNU General Public License for more details. 15ad85094bSMauro Carvalho Chehab * 16ad85094bSMauro Carvalho Chehab */ 17ad85094bSMauro Carvalho Chehab 18ad85094bSMauro Carvalho Chehab #include <linux/module.h> 19ad85094bSMauro Carvalho Chehab #include <linux/types.h> 20ad85094bSMauro Carvalho Chehab #include <linux/kernel.h> 21ad85094bSMauro Carvalho Chehab #include <linux/mm.h> 22ad85094bSMauro Carvalho Chehab #include <linux/string.h> 23ad85094bSMauro Carvalho Chehab #include <linux/errno.h> 24ad85094bSMauro Carvalho Chehab #include <linux/init.h> 25ad85094bSMauro Carvalho Chehab #include <linux/kmod.h> 26ad85094bSMauro Carvalho Chehab #include <linux/device.h> 27ad85094bSMauro Carvalho Chehab #include <linux/delay.h> 28ad85094bSMauro Carvalho Chehab #include <linux/slab.h> 29ad85094bSMauro Carvalho Chehab #include <linux/i2c.h> 30ad85094bSMauro Carvalho Chehab #include <linux/moduleparam.h> 31ad85094bSMauro Carvalho Chehab #include <media/v4l2-device.h> 32ad85094bSMauro Carvalho Chehab #include <linux/io.h> 33ad85094bSMauro Carvalho Chehab #include "../include/linux/atomisp_gmin_platform.h" 34ad85094bSMauro Carvalho Chehab 35ad85094bSMauro Carvalho Chehab #include "gc0310.h" 36ad85094bSMauro Carvalho Chehab 37ad85094bSMauro Carvalho Chehab /* 38ad85094bSMauro Carvalho Chehab * gc0310_write_reg_array - Initializes a list of GC0310 registers 39ad85094bSMauro Carvalho Chehab * @client: i2c driver client structure 40ad85094bSMauro Carvalho Chehab * @reglist: list of registers to be written 41bfe06aeeSHans de Goede * @count: number of register, value pairs in the list 42ad85094bSMauro Carvalho Chehab */ 43ad85094bSMauro Carvalho Chehab static int gc0310_write_reg_array(struct i2c_client *client, 44bfe06aeeSHans de Goede const struct gc0310_reg *reglist, int count) 45ad85094bSMauro Carvalho Chehab { 46bfe06aeeSHans de Goede int i, err; 47ad85094bSMauro Carvalho Chehab 48bfe06aeeSHans de Goede for (i = 0; i < count; i++) { 4965e5ef2fSHans de Goede err = i2c_smbus_write_byte_data(client, reglist[i].reg, reglist[i].val); 5065e5ef2fSHans de Goede if (err) { 5165e5ef2fSHans de Goede dev_err(&client->dev, "write error: wrote 0x%x to offset 0x%x error %d", 5265e5ef2fSHans de Goede reglist[i].val, reglist[i].reg, err); 53ad85094bSMauro Carvalho Chehab return err; 54ad85094bSMauro Carvalho Chehab } 5565e5ef2fSHans de Goede } 56ad85094bSMauro Carvalho Chehab 57e1a4b3a7SHans de Goede return 0; 58ad85094bSMauro Carvalho Chehab } 59bdfe0bebSMauro Carvalho Chehab 60ef5fb5d4SHans de Goede static int gc0310_exposure_set(struct gc0310_device *dev, u32 exp) 61ef5fb5d4SHans de Goede { 62ef5fb5d4SHans de Goede struct i2c_client *client = v4l2_get_subdevdata(&dev->sd); 63ef5fb5d4SHans de Goede 64ef5fb5d4SHans de Goede return i2c_smbus_write_word_swapped(client, GC0310_AEC_PK_EXPO_H, exp); 65ef5fb5d4SHans de Goede } 66ef5fb5d4SHans de Goede 67ef5fb5d4SHans de Goede static int gc0310_gain_set(struct gc0310_device *dev, u32 gain) 68ef5fb5d4SHans de Goede { 69ef5fb5d4SHans de Goede struct i2c_client *client = v4l2_get_subdevdata(&dev->sd); 70ef5fb5d4SHans de Goede u8 again, dgain; 71ef5fb5d4SHans de Goede int ret; 72ef5fb5d4SHans de Goede 73ef5fb5d4SHans de Goede /* Taken from original driver, this never sets dgain lower then 32? */ 74ef5fb5d4SHans de Goede 75ef5fb5d4SHans de Goede /* Change 0 - 95 to 32 - 127 */ 76ef5fb5d4SHans de Goede gain += 32; 77ef5fb5d4SHans de Goede 78ef5fb5d4SHans de Goede if (gain < 64) { 79ef5fb5d4SHans de Goede again = 0x0; /* sqrt(2) */ 80ef5fb5d4SHans de Goede dgain = gain; 81ef5fb5d4SHans de Goede } else { 82ef5fb5d4SHans de Goede again = 0x2; /* 2 * sqrt(2) */ 83ef5fb5d4SHans de Goede dgain = gain / 2; 84ef5fb5d4SHans de Goede } 85ef5fb5d4SHans de Goede 86ef5fb5d4SHans de Goede ret = i2c_smbus_write_byte_data(client, GC0310_AGC_ADJ, again); 87ef5fb5d4SHans de Goede if (ret) 88ef5fb5d4SHans de Goede return ret; 89ef5fb5d4SHans de Goede 90ef5fb5d4SHans de Goede return i2c_smbus_write_byte_data(client, GC0310_DGC_ADJ, dgain); 91ef5fb5d4SHans de Goede } 92ef5fb5d4SHans de Goede 93ad85094bSMauro Carvalho Chehab static int gc0310_s_ctrl(struct v4l2_ctrl *ctrl) 94ad85094bSMauro Carvalho Chehab { 95ef5fb5d4SHans de Goede struct gc0310_device *dev = 96ef5fb5d4SHans de Goede container_of(ctrl->handler, struct gc0310_device, ctrls.handler); 97ef5fb5d4SHans de Goede int ret; 98ef5fb5d4SHans de Goede 99ef5fb5d4SHans de Goede if (!dev->power_on) 100ef5fb5d4SHans de Goede return 0; 101ad85094bSMauro Carvalho Chehab 102ad85094bSMauro Carvalho Chehab switch (ctrl->id) { 103ef5fb5d4SHans de Goede case V4L2_CID_EXPOSURE: 104ef5fb5d4SHans de Goede ret = gc0310_exposure_set(dev, ctrl->val); 105ef5fb5d4SHans de Goede break; 106ef5fb5d4SHans de Goede case V4L2_CID_GAIN: 107ef5fb5d4SHans de Goede ret = gc0310_gain_set(dev, ctrl->val); 108ef5fb5d4SHans de Goede break; 109ad85094bSMauro Carvalho Chehab default: 110ad85094bSMauro Carvalho Chehab ret = -EINVAL; 111ef5fb5d4SHans de Goede break; 112ad85094bSMauro Carvalho Chehab } 113ef5fb5d4SHans de Goede 114ad85094bSMauro Carvalho Chehab return ret; 115ad85094bSMauro Carvalho Chehab } 116ad85094bSMauro Carvalho Chehab 117ad85094bSMauro Carvalho Chehab static const struct v4l2_ctrl_ops ctrl_ops = { 118ad85094bSMauro Carvalho Chehab .s_ctrl = gc0310_s_ctrl, 119ad85094bSMauro Carvalho Chehab }; 120ad85094bSMauro Carvalho Chehab 121ad85094bSMauro Carvalho Chehab static int power_ctrl(struct v4l2_subdev *sd, bool flag) 122ad85094bSMauro Carvalho Chehab { 123ad85094bSMauro Carvalho Chehab int ret = 0; 124ad85094bSMauro Carvalho Chehab struct gc0310_device *dev = to_gc0310_sensor(sd); 125bdfe0bebSMauro Carvalho Chehab 126ad85094bSMauro Carvalho Chehab if (!dev || !dev->platform_data) 127ad85094bSMauro Carvalho Chehab return -ENODEV; 128ad85094bSMauro Carvalho Chehab 129ad85094bSMauro Carvalho Chehab if (flag) { 130ad85094bSMauro Carvalho Chehab /* The upstream module driver (written to Crystal 131ad85094bSMauro Carvalho Chehab * Cove) had this logic to pulse the rails low first. 132ad85094bSMauro Carvalho Chehab * This appears to break things on the MRD7 with the 133ad85094bSMauro Carvalho Chehab * X-Powers PMIC... 134ad85094bSMauro Carvalho Chehab * 135ad85094bSMauro Carvalho Chehab * ret = dev->platform_data->v1p8_ctrl(sd, 0); 136ad85094bSMauro Carvalho Chehab * ret |= dev->platform_data->v2p8_ctrl(sd, 0); 137ad85094bSMauro Carvalho Chehab * mdelay(50); 138ad85094bSMauro Carvalho Chehab */ 139ad85094bSMauro Carvalho Chehab ret |= dev->platform_data->v1p8_ctrl(sd, 1); 140ad85094bSMauro Carvalho Chehab ret |= dev->platform_data->v2p8_ctrl(sd, 1); 141ad85094bSMauro Carvalho Chehab usleep_range(10000, 15000); 142ad85094bSMauro Carvalho Chehab } 143ad85094bSMauro Carvalho Chehab 144ad85094bSMauro Carvalho Chehab if (!flag || ret) { 145ad85094bSMauro Carvalho Chehab ret |= dev->platform_data->v1p8_ctrl(sd, 0); 146ad85094bSMauro Carvalho Chehab ret |= dev->platform_data->v2p8_ctrl(sd, 0); 147ad85094bSMauro Carvalho Chehab } 148ad85094bSMauro Carvalho Chehab return ret; 149ad85094bSMauro Carvalho Chehab } 150ad85094bSMauro Carvalho Chehab 151ad85094bSMauro Carvalho Chehab static int gpio_ctrl(struct v4l2_subdev *sd, bool flag) 152ad85094bSMauro Carvalho Chehab { 153ad85094bSMauro Carvalho Chehab int ret; 154ad85094bSMauro Carvalho Chehab struct gc0310_device *dev = to_gc0310_sensor(sd); 155ad85094bSMauro Carvalho Chehab 156ad85094bSMauro Carvalho Chehab if (!dev || !dev->platform_data) 157ad85094bSMauro Carvalho Chehab return -ENODEV; 158ad85094bSMauro Carvalho Chehab 159ad85094bSMauro Carvalho Chehab /* GPIO0 == "reset" (active low), GPIO1 == "power down" */ 160ad85094bSMauro Carvalho Chehab if (flag) { 161ad85094bSMauro Carvalho Chehab /* Pulse reset, then release power down */ 162ad85094bSMauro Carvalho Chehab ret = dev->platform_data->gpio0_ctrl(sd, 0); 163ad85094bSMauro Carvalho Chehab usleep_range(5000, 10000); 164ad85094bSMauro Carvalho Chehab ret |= dev->platform_data->gpio0_ctrl(sd, 1); 165ad85094bSMauro Carvalho Chehab usleep_range(10000, 15000); 166ad85094bSMauro Carvalho Chehab ret |= dev->platform_data->gpio1_ctrl(sd, 0); 167ad85094bSMauro Carvalho Chehab usleep_range(10000, 15000); 168ad85094bSMauro Carvalho Chehab } else { 169ad85094bSMauro Carvalho Chehab ret = dev->platform_data->gpio1_ctrl(sd, 1); 170ad85094bSMauro Carvalho Chehab ret |= dev->platform_data->gpio0_ctrl(sd, 0); 171ad85094bSMauro Carvalho Chehab } 172ad85094bSMauro Carvalho Chehab return ret; 173ad85094bSMauro Carvalho Chehab } 174ad85094bSMauro Carvalho Chehab 175ad85094bSMauro Carvalho Chehab static int power_up(struct v4l2_subdev *sd) 176ad85094bSMauro Carvalho Chehab { 177ad85094bSMauro Carvalho Chehab struct gc0310_device *dev = to_gc0310_sensor(sd); 178ad85094bSMauro Carvalho Chehab struct i2c_client *client = v4l2_get_subdevdata(sd); 179ad85094bSMauro Carvalho Chehab int ret; 180ad85094bSMauro Carvalho Chehab 181ad85094bSMauro Carvalho Chehab if (!dev->platform_data) { 182ad85094bSMauro Carvalho Chehab dev_err(&client->dev, 183ad85094bSMauro Carvalho Chehab "no camera_sensor_platform_data"); 184ad85094bSMauro Carvalho Chehab return -ENODEV; 185ad85094bSMauro Carvalho Chehab } 186ad85094bSMauro Carvalho Chehab 187c5fafbadSHans de Goede if (dev->power_on) 188c5fafbadSHans de Goede return 0; /* Already on */ 189c5fafbadSHans de Goede 190ad85094bSMauro Carvalho Chehab /* power control */ 191ad85094bSMauro Carvalho Chehab ret = power_ctrl(sd, 1); 192ad85094bSMauro Carvalho Chehab if (ret) 193ad85094bSMauro Carvalho Chehab goto fail_power; 194ad85094bSMauro Carvalho Chehab 195ad85094bSMauro Carvalho Chehab /* flis clock control */ 196ad85094bSMauro Carvalho Chehab ret = dev->platform_data->flisclk_ctrl(sd, 1); 197ad85094bSMauro Carvalho Chehab if (ret) 198ad85094bSMauro Carvalho Chehab goto fail_clk; 199ad85094bSMauro Carvalho Chehab 200ad85094bSMauro Carvalho Chehab /* gpio ctrl */ 201ad85094bSMauro Carvalho Chehab ret = gpio_ctrl(sd, 1); 202ad85094bSMauro Carvalho Chehab if (ret) { 203ad85094bSMauro Carvalho Chehab ret = gpio_ctrl(sd, 1); 204ad85094bSMauro Carvalho Chehab if (ret) 205ad85094bSMauro Carvalho Chehab goto fail_gpio; 206ad85094bSMauro Carvalho Chehab } 207ad85094bSMauro Carvalho Chehab 208ad85094bSMauro Carvalho Chehab msleep(100); 209ad85094bSMauro Carvalho Chehab 210c5fafbadSHans de Goede dev->power_on = true; 211ad85094bSMauro Carvalho Chehab return 0; 212ad85094bSMauro Carvalho Chehab 213ad85094bSMauro Carvalho Chehab fail_gpio: 214ad85094bSMauro Carvalho Chehab dev->platform_data->flisclk_ctrl(sd, 0); 215ad85094bSMauro Carvalho Chehab fail_clk: 216ad85094bSMauro Carvalho Chehab power_ctrl(sd, 0); 217ad85094bSMauro Carvalho Chehab fail_power: 218ad85094bSMauro Carvalho Chehab dev_err(&client->dev, "sensor power-up failed\n"); 219ad85094bSMauro Carvalho Chehab 220ad85094bSMauro Carvalho Chehab return ret; 221ad85094bSMauro Carvalho Chehab } 222ad85094bSMauro Carvalho Chehab 223ad85094bSMauro Carvalho Chehab static int power_down(struct v4l2_subdev *sd) 224ad85094bSMauro Carvalho Chehab { 225ad85094bSMauro Carvalho Chehab struct gc0310_device *dev = to_gc0310_sensor(sd); 226ad85094bSMauro Carvalho Chehab struct i2c_client *client = v4l2_get_subdevdata(sd); 227ad85094bSMauro Carvalho Chehab int ret = 0; 228ad85094bSMauro Carvalho Chehab 229ad85094bSMauro Carvalho Chehab if (!dev->platform_data) { 230ad85094bSMauro Carvalho Chehab dev_err(&client->dev, 231ad85094bSMauro Carvalho Chehab "no camera_sensor_platform_data"); 232ad85094bSMauro Carvalho Chehab return -ENODEV; 233ad85094bSMauro Carvalho Chehab } 234ad85094bSMauro Carvalho Chehab 235c5fafbadSHans de Goede if (!dev->power_on) 236c5fafbadSHans de Goede return 0; /* Already off */ 237c5fafbadSHans de Goede 238ad85094bSMauro Carvalho Chehab /* gpio ctrl */ 239ad85094bSMauro Carvalho Chehab ret = gpio_ctrl(sd, 0); 240ad85094bSMauro Carvalho Chehab if (ret) { 241ad85094bSMauro Carvalho Chehab ret = gpio_ctrl(sd, 0); 242ad85094bSMauro Carvalho Chehab if (ret) 243ad85094bSMauro Carvalho Chehab dev_err(&client->dev, "gpio failed 2\n"); 244ad85094bSMauro Carvalho Chehab } 245ad85094bSMauro Carvalho Chehab 246ad85094bSMauro Carvalho Chehab ret = dev->platform_data->flisclk_ctrl(sd, 0); 247ad85094bSMauro Carvalho Chehab if (ret) 248ad85094bSMauro Carvalho Chehab dev_err(&client->dev, "flisclk failed\n"); 249ad85094bSMauro Carvalho Chehab 250ad85094bSMauro Carvalho Chehab /* power control */ 251ad85094bSMauro Carvalho Chehab ret = power_ctrl(sd, 0); 252ad85094bSMauro Carvalho Chehab if (ret) 253ad85094bSMauro Carvalho Chehab dev_err(&client->dev, "vprog failed.\n"); 254ad85094bSMauro Carvalho Chehab 255c5fafbadSHans de Goede dev->power_on = false; 256ad85094bSMauro Carvalho Chehab return ret; 257ad85094bSMauro Carvalho Chehab } 258ad85094bSMauro Carvalho Chehab 2599783b96aSHans de Goede static struct v4l2_mbus_framefmt * 2609783b96aSHans de Goede gc0310_get_pad_format(struct gc0310_device *dev, 2619783b96aSHans de Goede struct v4l2_subdev_state *state, 2629783b96aSHans de Goede unsigned int pad, enum v4l2_subdev_format_whence which) 263ad85094bSMauro Carvalho Chehab { 2649783b96aSHans de Goede if (which == V4L2_SUBDEV_FORMAT_TRY) 2659783b96aSHans de Goede return v4l2_subdev_get_try_format(&dev->sd, state, pad); 266ad85094bSMauro Carvalho Chehab 2679783b96aSHans de Goede return &dev->mode.fmt; 268ad85094bSMauro Carvalho Chehab } 269ad85094bSMauro Carvalho Chehab 2709783b96aSHans de Goede /* The GC0310 currently only supports 1 fixed fmt */ 2719783b96aSHans de Goede static void gc0310_fill_format(struct v4l2_mbus_framefmt *fmt) 2729783b96aSHans de Goede { 2739783b96aSHans de Goede memset(fmt, 0, sizeof(*fmt)); 2749783b96aSHans de Goede fmt->width = GC0310_NATIVE_WIDTH; 2759783b96aSHans de Goede fmt->height = GC0310_NATIVE_HEIGHT; 2769783b96aSHans de Goede fmt->field = V4L2_FIELD_NONE; 2779783b96aSHans de Goede fmt->code = MEDIA_BUS_FMT_SGRBG8_1X8; 278ad85094bSMauro Carvalho Chehab } 279ad85094bSMauro Carvalho Chehab 280ad85094bSMauro Carvalho Chehab static int gc0310_set_fmt(struct v4l2_subdev *sd, 2810d346d2aSTomi Valkeinen struct v4l2_subdev_state *sd_state, 282ad85094bSMauro Carvalho Chehab struct v4l2_subdev_format *format) 283ad85094bSMauro Carvalho Chehab { 2849783b96aSHans de Goede struct gc0310_device *dev = to_gc0310_sensor(sd); 2859783b96aSHans de Goede struct v4l2_mbus_framefmt *fmt; 286bdfe0bebSMauro Carvalho Chehab 2879783b96aSHans de Goede fmt = gc0310_get_pad_format(dev, sd_state, format->pad, format->which); 2889783b96aSHans de Goede gc0310_fill_format(fmt); 289ad85094bSMauro Carvalho Chehab 2909783b96aSHans de Goede format->format = *fmt; 2919783b96aSHans de Goede return 0; 292ad85094bSMauro Carvalho Chehab } 293ad85094bSMauro Carvalho Chehab 294ad85094bSMauro Carvalho Chehab static int gc0310_get_fmt(struct v4l2_subdev *sd, 2950d346d2aSTomi Valkeinen struct v4l2_subdev_state *sd_state, 296ad85094bSMauro Carvalho Chehab struct v4l2_subdev_format *format) 297ad85094bSMauro Carvalho Chehab { 298ad85094bSMauro Carvalho Chehab struct gc0310_device *dev = to_gc0310_sensor(sd); 2999783b96aSHans de Goede struct v4l2_mbus_framefmt *fmt; 300ad85094bSMauro Carvalho Chehab 3019783b96aSHans de Goede fmt = gc0310_get_pad_format(dev, sd_state, format->pad, format->which); 3029783b96aSHans de Goede format->format = *fmt; 303ad85094bSMauro Carvalho Chehab return 0; 304ad85094bSMauro Carvalho Chehab } 305ad85094bSMauro Carvalho Chehab 306ad85094bSMauro Carvalho Chehab static int gc0310_detect(struct i2c_client *client) 307ad85094bSMauro Carvalho Chehab { 308ad85094bSMauro Carvalho Chehab struct i2c_adapter *adapter = client->adapter; 309ad85094bSMauro Carvalho Chehab int ret; 310ad85094bSMauro Carvalho Chehab 311ad85094bSMauro Carvalho Chehab if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) 312ad85094bSMauro Carvalho Chehab return -ENODEV; 313ad85094bSMauro Carvalho Chehab 31465e5ef2fSHans de Goede ret = i2c_smbus_read_word_swapped(client, GC0310_SC_CMMN_CHIP_ID_H); 31565e5ef2fSHans de Goede if (ret < 0) { 31665e5ef2fSHans de Goede dev_err(&client->dev, "read sensor_id failed: %d\n", ret); 317ad85094bSMauro Carvalho Chehab return -ENODEV; 318ad85094bSMauro Carvalho Chehab } 319ad85094bSMauro Carvalho Chehab 32065e5ef2fSHans de Goede dev_dbg(&client->dev, "sensor ID = 0x%x\n", ret); 32165e5ef2fSHans de Goede 32265e5ef2fSHans de Goede if (ret != GC0310_ID) { 32365e5ef2fSHans de Goede dev_err(&client->dev, "sensor ID error, read id = 0x%x, target id = 0x%x\n", 32465e5ef2fSHans de Goede ret, GC0310_ID); 325ad85094bSMauro Carvalho Chehab return -ENODEV; 326ad85094bSMauro Carvalho Chehab } 327ad85094bSMauro Carvalho Chehab 328ad85094bSMauro Carvalho Chehab dev_dbg(&client->dev, "detect gc0310 success\n"); 329ad85094bSMauro Carvalho Chehab 330ad85094bSMauro Carvalho Chehab return 0; 331ad85094bSMauro Carvalho Chehab } 332ad85094bSMauro Carvalho Chehab 333ad85094bSMauro Carvalho Chehab static int gc0310_s_stream(struct v4l2_subdev *sd, int enable) 334ad85094bSMauro Carvalho Chehab { 335ad85094bSMauro Carvalho Chehab struct gc0310_device *dev = to_gc0310_sensor(sd); 336ad85094bSMauro Carvalho Chehab struct i2c_client *client = v4l2_get_subdevdata(sd); 337ad85094bSMauro Carvalho Chehab int ret; 338ad85094bSMauro Carvalho Chehab 3392dfc978aSDeepak R Varma dev_dbg(&client->dev, "%s S enable=%d\n", __func__, enable); 340ad85094bSMauro Carvalho Chehab mutex_lock(&dev->input_lock); 341ad85094bSMauro Carvalho Chehab 342ad85094bSMauro Carvalho Chehab if (enable) { 343*b6763b22SHans de Goede ret = power_up(sd); 344*b6763b22SHans de Goede if (ret) 345*b6763b22SHans de Goede goto error_unlock; 346*b6763b22SHans de Goede 347*b6763b22SHans de Goede ret = gc0310_write_reg_array(client, gc0310_reset_register, 348*b6763b22SHans de Goede ARRAY_SIZE(gc0310_reset_register)); 349*b6763b22SHans de Goede if (ret) 350*b6763b22SHans de Goede goto error_power_down; 351*b6763b22SHans de Goede 352*b6763b22SHans de Goede ret = gc0310_write_reg_array(client, gc0310_VGA_30fps, 353*b6763b22SHans de Goede ARRAY_SIZE(gc0310_VGA_30fps)); 354*b6763b22SHans de Goede if (ret) 355*b6763b22SHans de Goede goto error_power_down; 356*b6763b22SHans de Goede 357*b6763b22SHans de Goede /* restore value of all ctrls */ 358*b6763b22SHans de Goede ret = __v4l2_ctrl_handler_setup(&dev->ctrls.handler); 359*b6763b22SHans de Goede if (ret) 360*b6763b22SHans de Goede goto error_power_down; 361*b6763b22SHans de Goede 362ad85094bSMauro Carvalho Chehab /* enable per frame MIPI and sensor ctrl reset */ 36365e5ef2fSHans de Goede ret = i2c_smbus_write_byte_data(client, 0xFE, 0x30); 3642b2297b1SHans de Goede if (ret) 365*b6763b22SHans de Goede goto error_power_down; 366ad85094bSMauro Carvalho Chehab } 367ad85094bSMauro Carvalho Chehab 36865e5ef2fSHans de Goede ret = i2c_smbus_write_byte_data(client, GC0310_RESET_RELATED, GC0310_REGISTER_PAGE_3); 3692b2297b1SHans de Goede if (ret) 370*b6763b22SHans de Goede goto error_power_down; 371ad85094bSMauro Carvalho Chehab 37265e5ef2fSHans de Goede ret = i2c_smbus_write_byte_data(client, GC0310_SW_STREAM, 37365e5ef2fSHans de Goede enable ? GC0310_START_STREAMING : GC0310_STOP_STREAMING); 3742b2297b1SHans de Goede if (ret) 375*b6763b22SHans de Goede goto error_power_down; 376ad85094bSMauro Carvalho Chehab 37765e5ef2fSHans de Goede ret = i2c_smbus_write_byte_data(client, GC0310_RESET_RELATED, GC0310_REGISTER_PAGE_0); 3782b2297b1SHans de Goede if (ret) 379*b6763b22SHans de Goede goto error_power_down; 380*b6763b22SHans de Goede 381*b6763b22SHans de Goede if (!enable) 382*b6763b22SHans de Goede power_down(sd); 383ad85094bSMauro Carvalho Chehab 384ad85094bSMauro Carvalho Chehab mutex_unlock(&dev->input_lock); 3852b2297b1SHans de Goede return 0; 3862b2297b1SHans de Goede 387*b6763b22SHans de Goede error_power_down: 388*b6763b22SHans de Goede power_down(sd); 3892b2297b1SHans de Goede error_unlock: 3902b2297b1SHans de Goede mutex_unlock(&dev->input_lock); 391ad85094bSMauro Carvalho Chehab return ret; 392ad85094bSMauro Carvalho Chehab } 393ad85094bSMauro Carvalho Chehab 394ad85094bSMauro Carvalho Chehab static int gc0310_s_config(struct v4l2_subdev *sd, 395ad85094bSMauro Carvalho Chehab int irq, void *platform_data) 396ad85094bSMauro Carvalho Chehab { 397ad85094bSMauro Carvalho Chehab struct gc0310_device *dev = to_gc0310_sensor(sd); 398ad85094bSMauro Carvalho Chehab struct i2c_client *client = v4l2_get_subdevdata(sd); 399ad85094bSMauro Carvalho Chehab int ret = 0; 400ad85094bSMauro Carvalho Chehab 401ad85094bSMauro Carvalho Chehab if (!platform_data) 402ad85094bSMauro Carvalho Chehab return -ENODEV; 403ad85094bSMauro Carvalho Chehab 404ad85094bSMauro Carvalho Chehab dev->platform_data = 405ad85094bSMauro Carvalho Chehab (struct camera_sensor_platform_data *)platform_data; 406ad85094bSMauro Carvalho Chehab 407ad85094bSMauro Carvalho Chehab mutex_lock(&dev->input_lock); 408ad85094bSMauro Carvalho Chehab /* power off the module, then power on it in future 409ad85094bSMauro Carvalho Chehab * as first power on by board may not fulfill the 410ad85094bSMauro Carvalho Chehab * power on sequqence needed by the module 411ad85094bSMauro Carvalho Chehab */ 412c5fafbadSHans de Goede dev->power_on = true; /* force power_down() to run */ 413ad85094bSMauro Carvalho Chehab ret = power_down(sd); 414ad85094bSMauro Carvalho Chehab if (ret) { 415ad85094bSMauro Carvalho Chehab dev_err(&client->dev, "gc0310 power-off err.\n"); 416ad85094bSMauro Carvalho Chehab goto fail_power_off; 417ad85094bSMauro Carvalho Chehab } 418ad85094bSMauro Carvalho Chehab 419ad85094bSMauro Carvalho Chehab ret = power_up(sd); 420ad85094bSMauro Carvalho Chehab if (ret) { 421ad85094bSMauro Carvalho Chehab dev_err(&client->dev, "gc0310 power-up err.\n"); 422ad85094bSMauro Carvalho Chehab goto fail_power_on; 423ad85094bSMauro Carvalho Chehab } 424ad85094bSMauro Carvalho Chehab 425ad85094bSMauro Carvalho Chehab ret = dev->platform_data->csi_cfg(sd, 1); 426ad85094bSMauro Carvalho Chehab if (ret) 427ad85094bSMauro Carvalho Chehab goto fail_csi_cfg; 428ad85094bSMauro Carvalho Chehab 429ad85094bSMauro Carvalho Chehab /* config & detect sensor */ 430ad85094bSMauro Carvalho Chehab ret = gc0310_detect(client); 431ad85094bSMauro Carvalho Chehab if (ret) { 432ad85094bSMauro Carvalho Chehab dev_err(&client->dev, "gc0310_detect err s_config.\n"); 433ad85094bSMauro Carvalho Chehab goto fail_csi_cfg; 434ad85094bSMauro Carvalho Chehab } 435ad85094bSMauro Carvalho Chehab 436ad85094bSMauro Carvalho Chehab /* turn off sensor, after probed */ 437ad85094bSMauro Carvalho Chehab ret = power_down(sd); 438ad85094bSMauro Carvalho Chehab if (ret) { 439ad85094bSMauro Carvalho Chehab dev_err(&client->dev, "gc0310 power-off err.\n"); 440ad85094bSMauro Carvalho Chehab goto fail_csi_cfg; 441ad85094bSMauro Carvalho Chehab } 442ad85094bSMauro Carvalho Chehab mutex_unlock(&dev->input_lock); 443ad85094bSMauro Carvalho Chehab 444ad85094bSMauro Carvalho Chehab return 0; 445ad85094bSMauro Carvalho Chehab 446ad85094bSMauro Carvalho Chehab fail_csi_cfg: 447ad85094bSMauro Carvalho Chehab dev->platform_data->csi_cfg(sd, 0); 448ad85094bSMauro Carvalho Chehab fail_power_on: 449ad85094bSMauro Carvalho Chehab power_down(sd); 450ad85094bSMauro Carvalho Chehab dev_err(&client->dev, "sensor power-gating failed\n"); 451ad85094bSMauro Carvalho Chehab fail_power_off: 452ad85094bSMauro Carvalho Chehab mutex_unlock(&dev->input_lock); 453ad85094bSMauro Carvalho Chehab return ret; 454ad85094bSMauro Carvalho Chehab } 455ad85094bSMauro Carvalho Chehab 456ad85094bSMauro Carvalho Chehab static int gc0310_g_frame_interval(struct v4l2_subdev *sd, 457ad85094bSMauro Carvalho Chehab struct v4l2_subdev_frame_interval *interval) 458ad85094bSMauro Carvalho Chehab { 459ad85094bSMauro Carvalho Chehab interval->interval.numerator = 1; 4609783b96aSHans de Goede interval->interval.denominator = GC0310_FPS; 461ad85094bSMauro Carvalho Chehab 462ad85094bSMauro Carvalho Chehab return 0; 463ad85094bSMauro Carvalho Chehab } 464ad85094bSMauro Carvalho Chehab 465ad85094bSMauro Carvalho Chehab static int gc0310_enum_mbus_code(struct v4l2_subdev *sd, 4660d346d2aSTomi Valkeinen struct v4l2_subdev_state *sd_state, 467ad85094bSMauro Carvalho Chehab struct v4l2_subdev_mbus_code_enum *code) 468ad85094bSMauro Carvalho Chehab { 4699783b96aSHans de Goede /* We support only a single format */ 4709783b96aSHans de Goede if (code->index) 471ad85094bSMauro Carvalho Chehab return -EINVAL; 472ad85094bSMauro Carvalho Chehab 473ad85094bSMauro Carvalho Chehab code->code = MEDIA_BUS_FMT_SGRBG8_1X8; 474ad85094bSMauro Carvalho Chehab return 0; 475ad85094bSMauro Carvalho Chehab } 476ad85094bSMauro Carvalho Chehab 477ad85094bSMauro Carvalho Chehab static int gc0310_enum_frame_size(struct v4l2_subdev *sd, 4780d346d2aSTomi Valkeinen struct v4l2_subdev_state *sd_state, 479ad85094bSMauro Carvalho Chehab struct v4l2_subdev_frame_size_enum *fse) 480ad85094bSMauro Carvalho Chehab { 4819783b96aSHans de Goede /* We support only a single resolution */ 4829783b96aSHans de Goede if (fse->index) 483ad85094bSMauro Carvalho Chehab return -EINVAL; 484ad85094bSMauro Carvalho Chehab 4859783b96aSHans de Goede fse->min_width = GC0310_NATIVE_WIDTH; 4869783b96aSHans de Goede fse->max_width = GC0310_NATIVE_WIDTH; 4879783b96aSHans de Goede fse->min_height = GC0310_NATIVE_HEIGHT; 4889783b96aSHans de Goede fse->max_height = GC0310_NATIVE_HEIGHT; 489ad85094bSMauro Carvalho Chehab 490ad85094bSMauro Carvalho Chehab return 0; 491ad85094bSMauro Carvalho Chehab } 492ad85094bSMauro Carvalho Chehab 493ad85094bSMauro Carvalho Chehab static int gc0310_g_skip_frames(struct v4l2_subdev *sd, u32 *frames) 494ad85094bSMauro Carvalho Chehab { 4959783b96aSHans de Goede *frames = GC0310_SKIP_FRAMES; 496ad85094bSMauro Carvalho Chehab return 0; 497ad85094bSMauro Carvalho Chehab } 498ad85094bSMauro Carvalho Chehab 499ad85094bSMauro Carvalho Chehab static const struct v4l2_subdev_sensor_ops gc0310_sensor_ops = { 500ad85094bSMauro Carvalho Chehab .g_skip_frames = gc0310_g_skip_frames, 501ad85094bSMauro Carvalho Chehab }; 502ad85094bSMauro Carvalho Chehab 503ad85094bSMauro Carvalho Chehab static const struct v4l2_subdev_video_ops gc0310_video_ops = { 504ad85094bSMauro Carvalho Chehab .s_stream = gc0310_s_stream, 505ad85094bSMauro Carvalho Chehab .g_frame_interval = gc0310_g_frame_interval, 506ad85094bSMauro Carvalho Chehab }; 507ad85094bSMauro Carvalho Chehab 508ad85094bSMauro Carvalho Chehab static const struct v4l2_subdev_pad_ops gc0310_pad_ops = { 509ad85094bSMauro Carvalho Chehab .enum_mbus_code = gc0310_enum_mbus_code, 510ad85094bSMauro Carvalho Chehab .enum_frame_size = gc0310_enum_frame_size, 511ad85094bSMauro Carvalho Chehab .get_fmt = gc0310_get_fmt, 512ad85094bSMauro Carvalho Chehab .set_fmt = gc0310_set_fmt, 513ad85094bSMauro Carvalho Chehab }; 514ad85094bSMauro Carvalho Chehab 515ad85094bSMauro Carvalho Chehab static const struct v4l2_subdev_ops gc0310_ops = { 516ad85094bSMauro Carvalho Chehab .video = &gc0310_video_ops, 517ad85094bSMauro Carvalho Chehab .pad = &gc0310_pad_ops, 518ad85094bSMauro Carvalho Chehab .sensor = &gc0310_sensor_ops, 519ad85094bSMauro Carvalho Chehab }; 520ad85094bSMauro Carvalho Chehab 521ef5fb5d4SHans de Goede static int gc0310_init_controls(struct gc0310_device *dev) 522ef5fb5d4SHans de Goede { 523ef5fb5d4SHans de Goede struct v4l2_ctrl_handler *hdl = &dev->ctrls.handler; 524ef5fb5d4SHans de Goede 525ef5fb5d4SHans de Goede v4l2_ctrl_handler_init(hdl, 2); 526ef5fb5d4SHans de Goede 527ef5fb5d4SHans de Goede /* Use the same lock for controls as for everything else */ 528ef5fb5d4SHans de Goede hdl->lock = &dev->input_lock; 529ef5fb5d4SHans de Goede dev->sd.ctrl_handler = hdl; 530ef5fb5d4SHans de Goede 531ef5fb5d4SHans de Goede dev->ctrls.exposure = 532ef5fb5d4SHans de Goede v4l2_ctrl_new_std(hdl, &ctrl_ops, V4L2_CID_EXPOSURE, 0, 4095, 1, 1023); 533ef5fb5d4SHans de Goede 534ef5fb5d4SHans de Goede /* 32 steps at base gain 1 + 64 half steps at base gain 2 */ 535ef5fb5d4SHans de Goede dev->ctrls.gain = 536ef5fb5d4SHans de Goede v4l2_ctrl_new_std(hdl, &ctrl_ops, V4L2_CID_GAIN, 0, 95, 1, 31); 537ef5fb5d4SHans de Goede 538ef5fb5d4SHans de Goede return hdl->error; 539ef5fb5d4SHans de Goede } 540ef5fb5d4SHans de Goede 541ed5c2f5fSUwe Kleine-König static void gc0310_remove(struct i2c_client *client) 542ad85094bSMauro Carvalho Chehab { 543ad85094bSMauro Carvalho Chehab struct v4l2_subdev *sd = i2c_get_clientdata(client); 544ad85094bSMauro Carvalho Chehab struct gc0310_device *dev = to_gc0310_sensor(sd); 545bdfe0bebSMauro Carvalho Chehab 546ad85094bSMauro Carvalho Chehab dev_dbg(&client->dev, "gc0310_remove...\n"); 547ad85094bSMauro Carvalho Chehab 548ad85094bSMauro Carvalho Chehab dev->platform_data->csi_cfg(sd, 0); 549ad85094bSMauro Carvalho Chehab 550ad85094bSMauro Carvalho Chehab v4l2_device_unregister_subdev(sd); 551ad85094bSMauro Carvalho Chehab media_entity_cleanup(&dev->sd.entity); 552ef5fb5d4SHans de Goede v4l2_ctrl_handler_free(&dev->ctrls.handler); 553ad85094bSMauro Carvalho Chehab kfree(dev); 554ad85094bSMauro Carvalho Chehab } 555ad85094bSMauro Carvalho Chehab 556ad85094bSMauro Carvalho Chehab static int gc0310_probe(struct i2c_client *client) 557ad85094bSMauro Carvalho Chehab { 558ad85094bSMauro Carvalho Chehab struct gc0310_device *dev; 559ad85094bSMauro Carvalho Chehab int ret; 560ad85094bSMauro Carvalho Chehab void *pdata; 561c03496b3SMauro Carvalho Chehab 562ad85094bSMauro Carvalho Chehab dev = kzalloc(sizeof(*dev), GFP_KERNEL); 563ad85094bSMauro Carvalho Chehab if (!dev) 564ad85094bSMauro Carvalho Chehab return -ENOMEM; 565ad85094bSMauro Carvalho Chehab 566ad85094bSMauro Carvalho Chehab mutex_init(&dev->input_lock); 567bdfe0bebSMauro Carvalho Chehab v4l2_i2c_subdev_init(&dev->sd, client, &gc0310_ops); 5689783b96aSHans de Goede gc0310_fill_format(&dev->mode.fmt); 569ad85094bSMauro Carvalho Chehab 570ad85094bSMauro Carvalho Chehab pdata = gmin_camera_platform_data(&dev->sd, 571ad85094bSMauro Carvalho Chehab ATOMISP_INPUT_FORMAT_RAW_8, 572ad85094bSMauro Carvalho Chehab atomisp_bayer_order_grbg); 573ad85094bSMauro Carvalho Chehab if (!pdata) { 574ad85094bSMauro Carvalho Chehab ret = -EINVAL; 575ad85094bSMauro Carvalho Chehab goto out_free; 576ad85094bSMauro Carvalho Chehab } 577ad85094bSMauro Carvalho Chehab 578ad85094bSMauro Carvalho Chehab ret = gc0310_s_config(&dev->sd, client->irq, pdata); 579ad85094bSMauro Carvalho Chehab if (ret) 580ad85094bSMauro Carvalho Chehab goto out_free; 581ad85094bSMauro Carvalho Chehab 582ad85094bSMauro Carvalho Chehab ret = atomisp_register_i2c_module(&dev->sd, pdata, RAW_CAMERA); 583ad85094bSMauro Carvalho Chehab if (ret) 584ad85094bSMauro Carvalho Chehab goto out_free; 585ad85094bSMauro Carvalho Chehab 586ad85094bSMauro Carvalho Chehab dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; 587ad85094bSMauro Carvalho Chehab dev->pad.flags = MEDIA_PAD_FL_SOURCE; 588ad85094bSMauro Carvalho Chehab dev->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; 589ef5fb5d4SHans de Goede 590ef5fb5d4SHans de Goede ret = gc0310_init_controls(dev); 591ad85094bSMauro Carvalho Chehab if (ret) { 592ad85094bSMauro Carvalho Chehab gc0310_remove(client); 593ad85094bSMauro Carvalho Chehab return ret; 594ad85094bSMauro Carvalho Chehab } 595ad85094bSMauro Carvalho Chehab 596ad85094bSMauro Carvalho Chehab ret = media_entity_pads_init(&dev->sd.entity, 1, &dev->pad); 597ad85094bSMauro Carvalho Chehab if (ret) 598ad85094bSMauro Carvalho Chehab gc0310_remove(client); 599ad85094bSMauro Carvalho Chehab 600ad85094bSMauro Carvalho Chehab return ret; 601ad85094bSMauro Carvalho Chehab out_free: 602ad85094bSMauro Carvalho Chehab v4l2_device_unregister_subdev(&dev->sd); 603ad85094bSMauro Carvalho Chehab kfree(dev); 604ad85094bSMauro Carvalho Chehab return ret; 605ad85094bSMauro Carvalho Chehab } 606ad85094bSMauro Carvalho Chehab 607ad85094bSMauro Carvalho Chehab static const struct acpi_device_id gc0310_acpi_match[] = { 608ad85094bSMauro Carvalho Chehab {"XXGC0310"}, 609ad85094bSMauro Carvalho Chehab {"INT0310"}, 610ad85094bSMauro Carvalho Chehab {}, 611ad85094bSMauro Carvalho Chehab }; 612ad85094bSMauro Carvalho Chehab MODULE_DEVICE_TABLE(acpi, gc0310_acpi_match); 613ad85094bSMauro Carvalho Chehab 614ad85094bSMauro Carvalho Chehab static struct i2c_driver gc0310_driver = { 615ad85094bSMauro Carvalho Chehab .driver = { 616ad85094bSMauro Carvalho Chehab .name = "gc0310", 617ad85094bSMauro Carvalho Chehab .acpi_match_table = gc0310_acpi_match, 618ad85094bSMauro Carvalho Chehab }, 619ad85094bSMauro Carvalho Chehab .probe_new = gc0310_probe, 620ad85094bSMauro Carvalho Chehab .remove = gc0310_remove, 621ad85094bSMauro Carvalho Chehab }; 622ad85094bSMauro Carvalho Chehab module_i2c_driver(gc0310_driver); 623ad85094bSMauro Carvalho Chehab 624ad85094bSMauro Carvalho Chehab MODULE_AUTHOR("Lai, Angie <angie.lai@intel.com>"); 625ad85094bSMauro Carvalho Chehab MODULE_DESCRIPTION("A low-level driver for GalaxyCore GC0310 sensors"); 626ad85094bSMauro Carvalho Chehab MODULE_LICENSE("GPL"); 627