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 gc0310_init(struct v4l2_subdev *sd) 122ad85094bSMauro Carvalho Chehab { 123ad85094bSMauro Carvalho Chehab int ret; 124ad85094bSMauro Carvalho Chehab struct i2c_client *client = v4l2_get_subdevdata(sd); 125ad85094bSMauro Carvalho Chehab struct gc0310_device *dev = to_gc0310_sensor(sd); 126ad85094bSMauro Carvalho Chehab 127ad85094bSMauro Carvalho Chehab mutex_lock(&dev->input_lock); 128ad85094bSMauro Carvalho Chehab 1294636a85cSMauro Carvalho Chehab /* set initial registers */ 130bfe06aeeSHans de Goede ret = gc0310_write_reg_array(client, gc0310_reset_register, 131bfe06aeeSHans de Goede ARRAY_SIZE(gc0310_reset_register)); 132ef5fb5d4SHans de Goede if (ret) 133ef5fb5d4SHans de Goede goto out_unlock; 134ad85094bSMauro Carvalho Chehab 135ef5fb5d4SHans de Goede /* restore value of all ctrls */ 136ef5fb5d4SHans de Goede ret = __v4l2_ctrl_handler_setup(&dev->ctrls.handler); 137ad85094bSMauro Carvalho Chehab 138ef5fb5d4SHans de Goede out_unlock: 139ef5fb5d4SHans de Goede mutex_unlock(&dev->input_lock); 140ad85094bSMauro Carvalho Chehab return ret; 141ad85094bSMauro Carvalho Chehab } 142ad85094bSMauro Carvalho Chehab 143ad85094bSMauro Carvalho Chehab static int power_ctrl(struct v4l2_subdev *sd, bool flag) 144ad85094bSMauro Carvalho Chehab { 145ad85094bSMauro Carvalho Chehab int ret = 0; 146ad85094bSMauro Carvalho Chehab struct gc0310_device *dev = to_gc0310_sensor(sd); 147bdfe0bebSMauro Carvalho Chehab 148ad85094bSMauro Carvalho Chehab if (!dev || !dev->platform_data) 149ad85094bSMauro Carvalho Chehab return -ENODEV; 150ad85094bSMauro Carvalho Chehab 151ad85094bSMauro Carvalho Chehab if (flag) { 152ad85094bSMauro Carvalho Chehab /* The upstream module driver (written to Crystal 153ad85094bSMauro Carvalho Chehab * Cove) had this logic to pulse the rails low first. 154ad85094bSMauro Carvalho Chehab * This appears to break things on the MRD7 with the 155ad85094bSMauro Carvalho Chehab * X-Powers PMIC... 156ad85094bSMauro Carvalho Chehab * 157ad85094bSMauro Carvalho Chehab * ret = dev->platform_data->v1p8_ctrl(sd, 0); 158ad85094bSMauro Carvalho Chehab * ret |= dev->platform_data->v2p8_ctrl(sd, 0); 159ad85094bSMauro Carvalho Chehab * mdelay(50); 160ad85094bSMauro Carvalho Chehab */ 161ad85094bSMauro Carvalho Chehab ret |= dev->platform_data->v1p8_ctrl(sd, 1); 162ad85094bSMauro Carvalho Chehab ret |= dev->platform_data->v2p8_ctrl(sd, 1); 163ad85094bSMauro Carvalho Chehab usleep_range(10000, 15000); 164ad85094bSMauro Carvalho Chehab } 165ad85094bSMauro Carvalho Chehab 166ad85094bSMauro Carvalho Chehab if (!flag || ret) { 167ad85094bSMauro Carvalho Chehab ret |= dev->platform_data->v1p8_ctrl(sd, 0); 168ad85094bSMauro Carvalho Chehab ret |= dev->platform_data->v2p8_ctrl(sd, 0); 169ad85094bSMauro Carvalho Chehab } 170ad85094bSMauro Carvalho Chehab return ret; 171ad85094bSMauro Carvalho Chehab } 172ad85094bSMauro Carvalho Chehab 173ad85094bSMauro Carvalho Chehab static int gpio_ctrl(struct v4l2_subdev *sd, bool flag) 174ad85094bSMauro Carvalho Chehab { 175ad85094bSMauro Carvalho Chehab int ret; 176ad85094bSMauro Carvalho Chehab struct gc0310_device *dev = to_gc0310_sensor(sd); 177ad85094bSMauro Carvalho Chehab 178ad85094bSMauro Carvalho Chehab if (!dev || !dev->platform_data) 179ad85094bSMauro Carvalho Chehab return -ENODEV; 180ad85094bSMauro Carvalho Chehab 181ad85094bSMauro Carvalho Chehab /* GPIO0 == "reset" (active low), GPIO1 == "power down" */ 182ad85094bSMauro Carvalho Chehab if (flag) { 183ad85094bSMauro Carvalho Chehab /* Pulse reset, then release power down */ 184ad85094bSMauro Carvalho Chehab ret = dev->platform_data->gpio0_ctrl(sd, 0); 185ad85094bSMauro Carvalho Chehab usleep_range(5000, 10000); 186ad85094bSMauro Carvalho Chehab ret |= dev->platform_data->gpio0_ctrl(sd, 1); 187ad85094bSMauro Carvalho Chehab usleep_range(10000, 15000); 188ad85094bSMauro Carvalho Chehab ret |= dev->platform_data->gpio1_ctrl(sd, 0); 189ad85094bSMauro Carvalho Chehab usleep_range(10000, 15000); 190ad85094bSMauro Carvalho Chehab } else { 191ad85094bSMauro Carvalho Chehab ret = dev->platform_data->gpio1_ctrl(sd, 1); 192ad85094bSMauro Carvalho Chehab ret |= dev->platform_data->gpio0_ctrl(sd, 0); 193ad85094bSMauro Carvalho Chehab } 194ad85094bSMauro Carvalho Chehab return ret; 195ad85094bSMauro Carvalho Chehab } 196ad85094bSMauro Carvalho Chehab 197ad85094bSMauro Carvalho Chehab static int power_up(struct v4l2_subdev *sd) 198ad85094bSMauro Carvalho Chehab { 199ad85094bSMauro Carvalho Chehab struct gc0310_device *dev = to_gc0310_sensor(sd); 200ad85094bSMauro Carvalho Chehab struct i2c_client *client = v4l2_get_subdevdata(sd); 201ad85094bSMauro Carvalho Chehab int ret; 202ad85094bSMauro Carvalho Chehab 203ad85094bSMauro Carvalho Chehab if (!dev->platform_data) { 204ad85094bSMauro Carvalho Chehab dev_err(&client->dev, 205ad85094bSMauro Carvalho Chehab "no camera_sensor_platform_data"); 206ad85094bSMauro Carvalho Chehab return -ENODEV; 207ad85094bSMauro Carvalho Chehab } 208ad85094bSMauro Carvalho Chehab 209c5fafbadSHans de Goede if (dev->power_on) 210c5fafbadSHans de Goede return 0; /* Already on */ 211c5fafbadSHans de Goede 212ad85094bSMauro Carvalho Chehab /* power control */ 213ad85094bSMauro Carvalho Chehab ret = power_ctrl(sd, 1); 214ad85094bSMauro Carvalho Chehab if (ret) 215ad85094bSMauro Carvalho Chehab goto fail_power; 216ad85094bSMauro Carvalho Chehab 217ad85094bSMauro Carvalho Chehab /* flis clock control */ 218ad85094bSMauro Carvalho Chehab ret = dev->platform_data->flisclk_ctrl(sd, 1); 219ad85094bSMauro Carvalho Chehab if (ret) 220ad85094bSMauro Carvalho Chehab goto fail_clk; 221ad85094bSMauro Carvalho Chehab 222ad85094bSMauro Carvalho Chehab /* gpio ctrl */ 223ad85094bSMauro Carvalho Chehab ret = gpio_ctrl(sd, 1); 224ad85094bSMauro Carvalho Chehab if (ret) { 225ad85094bSMauro Carvalho Chehab ret = gpio_ctrl(sd, 1); 226ad85094bSMauro Carvalho Chehab if (ret) 227ad85094bSMauro Carvalho Chehab goto fail_gpio; 228ad85094bSMauro Carvalho Chehab } 229ad85094bSMauro Carvalho Chehab 230ad85094bSMauro Carvalho Chehab msleep(100); 231ad85094bSMauro Carvalho Chehab 232c5fafbadSHans de Goede dev->power_on = true; 233ad85094bSMauro Carvalho Chehab return 0; 234ad85094bSMauro Carvalho Chehab 235ad85094bSMauro Carvalho Chehab fail_gpio: 236ad85094bSMauro Carvalho Chehab dev->platform_data->flisclk_ctrl(sd, 0); 237ad85094bSMauro Carvalho Chehab fail_clk: 238ad85094bSMauro Carvalho Chehab power_ctrl(sd, 0); 239ad85094bSMauro Carvalho Chehab fail_power: 240ad85094bSMauro Carvalho Chehab dev_err(&client->dev, "sensor power-up failed\n"); 241ad85094bSMauro Carvalho Chehab 242ad85094bSMauro Carvalho Chehab return ret; 243ad85094bSMauro Carvalho Chehab } 244ad85094bSMauro Carvalho Chehab 245ad85094bSMauro Carvalho Chehab static int power_down(struct v4l2_subdev *sd) 246ad85094bSMauro Carvalho Chehab { 247ad85094bSMauro Carvalho Chehab struct gc0310_device *dev = to_gc0310_sensor(sd); 248ad85094bSMauro Carvalho Chehab struct i2c_client *client = v4l2_get_subdevdata(sd); 249ad85094bSMauro Carvalho Chehab int ret = 0; 250ad85094bSMauro Carvalho Chehab 251ad85094bSMauro Carvalho Chehab if (!dev->platform_data) { 252ad85094bSMauro Carvalho Chehab dev_err(&client->dev, 253ad85094bSMauro Carvalho Chehab "no camera_sensor_platform_data"); 254ad85094bSMauro Carvalho Chehab return -ENODEV; 255ad85094bSMauro Carvalho Chehab } 256ad85094bSMauro Carvalho Chehab 257c5fafbadSHans de Goede if (!dev->power_on) 258c5fafbadSHans de Goede return 0; /* Already off */ 259c5fafbadSHans de Goede 260ad85094bSMauro Carvalho Chehab /* gpio ctrl */ 261ad85094bSMauro Carvalho Chehab ret = gpio_ctrl(sd, 0); 262ad85094bSMauro Carvalho Chehab if (ret) { 263ad85094bSMauro Carvalho Chehab ret = gpio_ctrl(sd, 0); 264ad85094bSMauro Carvalho Chehab if (ret) 265ad85094bSMauro Carvalho Chehab dev_err(&client->dev, "gpio failed 2\n"); 266ad85094bSMauro Carvalho Chehab } 267ad85094bSMauro Carvalho Chehab 268ad85094bSMauro Carvalho Chehab ret = dev->platform_data->flisclk_ctrl(sd, 0); 269ad85094bSMauro Carvalho Chehab if (ret) 270ad85094bSMauro Carvalho Chehab dev_err(&client->dev, "flisclk failed\n"); 271ad85094bSMauro Carvalho Chehab 272ad85094bSMauro Carvalho Chehab /* power control */ 273ad85094bSMauro Carvalho Chehab ret = power_ctrl(sd, 0); 274ad85094bSMauro Carvalho Chehab if (ret) 275ad85094bSMauro Carvalho Chehab dev_err(&client->dev, "vprog failed.\n"); 276ad85094bSMauro Carvalho Chehab 277c5fafbadSHans de Goede dev->power_on = false; 278ad85094bSMauro Carvalho Chehab return ret; 279ad85094bSMauro Carvalho Chehab } 280ad85094bSMauro Carvalho Chehab 281ad85094bSMauro Carvalho Chehab static int gc0310_s_power(struct v4l2_subdev *sd, int on) 282ad85094bSMauro Carvalho Chehab { 283ad85094bSMauro Carvalho Chehab int ret; 284bdfe0bebSMauro Carvalho Chehab 285ad85094bSMauro Carvalho Chehab if (on == 0) 286ad85094bSMauro Carvalho Chehab return power_down(sd); 2874658e1dbSLeonid Kushnir 288dfe59c78SLeonid Kushnir ret = power_up(sd); 289dfe59c78SLeonid Kushnir if (ret) 290ad85094bSMauro Carvalho Chehab return ret; 291dfe59c78SLeonid Kushnir 292dfe59c78SLeonid Kushnir return gc0310_init(sd); 293ad85094bSMauro Carvalho Chehab } 294ad85094bSMauro Carvalho Chehab 295*9783b96aSHans de Goede static struct v4l2_mbus_framefmt * 296*9783b96aSHans de Goede gc0310_get_pad_format(struct gc0310_device *dev, 297*9783b96aSHans de Goede struct v4l2_subdev_state *state, 298*9783b96aSHans de Goede unsigned int pad, enum v4l2_subdev_format_whence which) 299ad85094bSMauro Carvalho Chehab { 300*9783b96aSHans de Goede if (which == V4L2_SUBDEV_FORMAT_TRY) 301*9783b96aSHans de Goede return v4l2_subdev_get_try_format(&dev->sd, state, pad); 302ad85094bSMauro Carvalho Chehab 303*9783b96aSHans de Goede return &dev->mode.fmt; 304ad85094bSMauro Carvalho Chehab } 305ad85094bSMauro Carvalho Chehab 306*9783b96aSHans de Goede /* The GC0310 currently only supports 1 fixed fmt */ 307*9783b96aSHans de Goede static void gc0310_fill_format(struct v4l2_mbus_framefmt *fmt) 308*9783b96aSHans de Goede { 309*9783b96aSHans de Goede memset(fmt, 0, sizeof(*fmt)); 310*9783b96aSHans de Goede fmt->width = GC0310_NATIVE_WIDTH; 311*9783b96aSHans de Goede fmt->height = GC0310_NATIVE_HEIGHT; 312*9783b96aSHans de Goede fmt->field = V4L2_FIELD_NONE; 313*9783b96aSHans de Goede fmt->code = MEDIA_BUS_FMT_SGRBG8_1X8; 314ad85094bSMauro Carvalho Chehab } 315ad85094bSMauro Carvalho Chehab 316ad85094bSMauro Carvalho Chehab static int gc0310_set_fmt(struct v4l2_subdev *sd, 3170d346d2aSTomi Valkeinen struct v4l2_subdev_state *sd_state, 318ad85094bSMauro Carvalho Chehab struct v4l2_subdev_format *format) 319ad85094bSMauro Carvalho Chehab { 320ad85094bSMauro Carvalho Chehab struct i2c_client *client = v4l2_get_subdevdata(sd); 321*9783b96aSHans de Goede struct gc0310_device *dev = to_gc0310_sensor(sd); 322*9783b96aSHans de Goede struct v4l2_mbus_framefmt *fmt; 323*9783b96aSHans de Goede int ret; 324bdfe0bebSMauro Carvalho Chehab 325*9783b96aSHans de Goede fmt = gc0310_get_pad_format(dev, sd_state, format->pad, format->which); 326*9783b96aSHans de Goede gc0310_fill_format(fmt); 327ad85094bSMauro Carvalho Chehab 328*9783b96aSHans de Goede format->format = *fmt; 329ad85094bSMauro Carvalho Chehab 330*9783b96aSHans de Goede if (format->which == V4L2_SUBDEV_FORMAT_TRY) 331*9783b96aSHans de Goede return 0; 332ad85094bSMauro Carvalho Chehab 333ad85094bSMauro Carvalho Chehab mutex_lock(&dev->input_lock); 334c5fafbadSHans de Goede /* s_power has not been called yet for std v4l2 clients (camorama) */ 335c5fafbadSHans de Goede power_up(sd); 336*9783b96aSHans de Goede ret = gc0310_write_reg_array(client, gc0310_VGA_30fps, ARRAY_SIZE(gc0310_VGA_30fps)); 337ad85094bSMauro Carvalho Chehab mutex_unlock(&dev->input_lock); 338*9783b96aSHans de Goede 339ad85094bSMauro Carvalho Chehab return ret; 340ad85094bSMauro Carvalho Chehab } 341ad85094bSMauro Carvalho Chehab 342ad85094bSMauro Carvalho Chehab static int gc0310_get_fmt(struct v4l2_subdev *sd, 3430d346d2aSTomi Valkeinen struct v4l2_subdev_state *sd_state, 344ad85094bSMauro Carvalho Chehab struct v4l2_subdev_format *format) 345ad85094bSMauro Carvalho Chehab { 346ad85094bSMauro Carvalho Chehab struct gc0310_device *dev = to_gc0310_sensor(sd); 347*9783b96aSHans de Goede struct v4l2_mbus_framefmt *fmt; 348ad85094bSMauro Carvalho Chehab 349*9783b96aSHans de Goede fmt = gc0310_get_pad_format(dev, sd_state, format->pad, format->which); 350*9783b96aSHans de Goede format->format = *fmt; 351ad85094bSMauro Carvalho Chehab return 0; 352ad85094bSMauro Carvalho Chehab } 353ad85094bSMauro Carvalho Chehab 354ad85094bSMauro Carvalho Chehab static int gc0310_detect(struct i2c_client *client) 355ad85094bSMauro Carvalho Chehab { 356ad85094bSMauro Carvalho Chehab struct i2c_adapter *adapter = client->adapter; 357ad85094bSMauro Carvalho Chehab int ret; 358ad85094bSMauro Carvalho Chehab 359ad85094bSMauro Carvalho Chehab if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) 360ad85094bSMauro Carvalho Chehab return -ENODEV; 361ad85094bSMauro Carvalho Chehab 36265e5ef2fSHans de Goede ret = i2c_smbus_read_word_swapped(client, GC0310_SC_CMMN_CHIP_ID_H); 36365e5ef2fSHans de Goede if (ret < 0) { 36465e5ef2fSHans de Goede dev_err(&client->dev, "read sensor_id failed: %d\n", ret); 365ad85094bSMauro Carvalho Chehab return -ENODEV; 366ad85094bSMauro Carvalho Chehab } 367ad85094bSMauro Carvalho Chehab 36865e5ef2fSHans de Goede dev_dbg(&client->dev, "sensor ID = 0x%x\n", ret); 36965e5ef2fSHans de Goede 37065e5ef2fSHans de Goede if (ret != GC0310_ID) { 37165e5ef2fSHans de Goede dev_err(&client->dev, "sensor ID error, read id = 0x%x, target id = 0x%x\n", 37265e5ef2fSHans de Goede ret, GC0310_ID); 373ad85094bSMauro Carvalho Chehab return -ENODEV; 374ad85094bSMauro Carvalho Chehab } 375ad85094bSMauro Carvalho Chehab 376ad85094bSMauro Carvalho Chehab dev_dbg(&client->dev, "detect gc0310 success\n"); 377ad85094bSMauro Carvalho Chehab 378ad85094bSMauro Carvalho Chehab return 0; 379ad85094bSMauro Carvalho Chehab } 380ad85094bSMauro Carvalho Chehab 381ad85094bSMauro Carvalho Chehab static int gc0310_s_stream(struct v4l2_subdev *sd, int enable) 382ad85094bSMauro Carvalho Chehab { 383ad85094bSMauro Carvalho Chehab struct gc0310_device *dev = to_gc0310_sensor(sd); 384ad85094bSMauro Carvalho Chehab struct i2c_client *client = v4l2_get_subdevdata(sd); 385ad85094bSMauro Carvalho Chehab int ret; 386ad85094bSMauro Carvalho Chehab 3872dfc978aSDeepak R Varma dev_dbg(&client->dev, "%s S enable=%d\n", __func__, enable); 388ad85094bSMauro Carvalho Chehab mutex_lock(&dev->input_lock); 389ad85094bSMauro Carvalho Chehab 390ad85094bSMauro Carvalho Chehab if (enable) { 391ad85094bSMauro Carvalho Chehab /* enable per frame MIPI and sensor ctrl reset */ 39265e5ef2fSHans de Goede ret = i2c_smbus_write_byte_data(client, 0xFE, 0x30); 3932b2297b1SHans de Goede if (ret) 3942b2297b1SHans de Goede goto error_unlock; 395ad85094bSMauro Carvalho Chehab } 396ad85094bSMauro Carvalho Chehab 39765e5ef2fSHans de Goede ret = i2c_smbus_write_byte_data(client, GC0310_RESET_RELATED, GC0310_REGISTER_PAGE_3); 3982b2297b1SHans de Goede if (ret) 3992b2297b1SHans de Goede goto error_unlock; 400ad85094bSMauro Carvalho Chehab 40165e5ef2fSHans de Goede ret = i2c_smbus_write_byte_data(client, GC0310_SW_STREAM, 40265e5ef2fSHans de Goede enable ? GC0310_START_STREAMING : GC0310_STOP_STREAMING); 4032b2297b1SHans de Goede if (ret) 4042b2297b1SHans de Goede goto error_unlock; 405ad85094bSMauro Carvalho Chehab 40665e5ef2fSHans de Goede ret = i2c_smbus_write_byte_data(client, GC0310_RESET_RELATED, GC0310_REGISTER_PAGE_0); 4072b2297b1SHans de Goede if (ret) 4082b2297b1SHans de Goede goto error_unlock; 409ad85094bSMauro Carvalho Chehab 410ad85094bSMauro Carvalho Chehab mutex_unlock(&dev->input_lock); 4112b2297b1SHans de Goede return 0; 4122b2297b1SHans de Goede 4132b2297b1SHans de Goede error_unlock: 4142b2297b1SHans de Goede mutex_unlock(&dev->input_lock); 415ad85094bSMauro Carvalho Chehab return ret; 416ad85094bSMauro Carvalho Chehab } 417ad85094bSMauro Carvalho Chehab 418ad85094bSMauro Carvalho Chehab static int gc0310_s_config(struct v4l2_subdev *sd, 419ad85094bSMauro Carvalho Chehab int irq, void *platform_data) 420ad85094bSMauro Carvalho Chehab { 421ad85094bSMauro Carvalho Chehab struct gc0310_device *dev = to_gc0310_sensor(sd); 422ad85094bSMauro Carvalho Chehab struct i2c_client *client = v4l2_get_subdevdata(sd); 423ad85094bSMauro Carvalho Chehab int ret = 0; 424ad85094bSMauro Carvalho Chehab 425ad85094bSMauro Carvalho Chehab if (!platform_data) 426ad85094bSMauro Carvalho Chehab return -ENODEV; 427ad85094bSMauro Carvalho Chehab 428ad85094bSMauro Carvalho Chehab dev->platform_data = 429ad85094bSMauro Carvalho Chehab (struct camera_sensor_platform_data *)platform_data; 430ad85094bSMauro Carvalho Chehab 431ad85094bSMauro Carvalho Chehab mutex_lock(&dev->input_lock); 432ad85094bSMauro Carvalho Chehab /* power off the module, then power on it in future 433ad85094bSMauro Carvalho Chehab * as first power on by board may not fulfill the 434ad85094bSMauro Carvalho Chehab * power on sequqence needed by the module 435ad85094bSMauro Carvalho Chehab */ 436c5fafbadSHans de Goede dev->power_on = true; /* force power_down() to run */ 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_power_off; 441ad85094bSMauro Carvalho Chehab } 442ad85094bSMauro Carvalho Chehab 443ad85094bSMauro Carvalho Chehab ret = power_up(sd); 444ad85094bSMauro Carvalho Chehab if (ret) { 445ad85094bSMauro Carvalho Chehab dev_err(&client->dev, "gc0310 power-up err.\n"); 446ad85094bSMauro Carvalho Chehab goto fail_power_on; 447ad85094bSMauro Carvalho Chehab } 448ad85094bSMauro Carvalho Chehab 449ad85094bSMauro Carvalho Chehab ret = dev->platform_data->csi_cfg(sd, 1); 450ad85094bSMauro Carvalho Chehab if (ret) 451ad85094bSMauro Carvalho Chehab goto fail_csi_cfg; 452ad85094bSMauro Carvalho Chehab 453ad85094bSMauro Carvalho Chehab /* config & detect sensor */ 454ad85094bSMauro Carvalho Chehab ret = gc0310_detect(client); 455ad85094bSMauro Carvalho Chehab if (ret) { 456ad85094bSMauro Carvalho Chehab dev_err(&client->dev, "gc0310_detect err s_config.\n"); 457ad85094bSMauro Carvalho Chehab goto fail_csi_cfg; 458ad85094bSMauro Carvalho Chehab } 459ad85094bSMauro Carvalho Chehab 460ad85094bSMauro Carvalho Chehab /* turn off sensor, after probed */ 461ad85094bSMauro Carvalho Chehab ret = power_down(sd); 462ad85094bSMauro Carvalho Chehab if (ret) { 463ad85094bSMauro Carvalho Chehab dev_err(&client->dev, "gc0310 power-off err.\n"); 464ad85094bSMauro Carvalho Chehab goto fail_csi_cfg; 465ad85094bSMauro Carvalho Chehab } 466ad85094bSMauro Carvalho Chehab mutex_unlock(&dev->input_lock); 467ad85094bSMauro Carvalho Chehab 468ad85094bSMauro Carvalho Chehab return 0; 469ad85094bSMauro Carvalho Chehab 470ad85094bSMauro Carvalho Chehab fail_csi_cfg: 471ad85094bSMauro Carvalho Chehab dev->platform_data->csi_cfg(sd, 0); 472ad85094bSMauro Carvalho Chehab fail_power_on: 473ad85094bSMauro Carvalho Chehab power_down(sd); 474ad85094bSMauro Carvalho Chehab dev_err(&client->dev, "sensor power-gating failed\n"); 475ad85094bSMauro Carvalho Chehab fail_power_off: 476ad85094bSMauro Carvalho Chehab mutex_unlock(&dev->input_lock); 477ad85094bSMauro Carvalho Chehab return ret; 478ad85094bSMauro Carvalho Chehab } 479ad85094bSMauro Carvalho Chehab 480ad85094bSMauro Carvalho Chehab static int gc0310_g_frame_interval(struct v4l2_subdev *sd, 481ad85094bSMauro Carvalho Chehab struct v4l2_subdev_frame_interval *interval) 482ad85094bSMauro Carvalho Chehab { 483ad85094bSMauro Carvalho Chehab interval->interval.numerator = 1; 484*9783b96aSHans de Goede interval->interval.denominator = GC0310_FPS; 485ad85094bSMauro Carvalho Chehab 486ad85094bSMauro Carvalho Chehab return 0; 487ad85094bSMauro Carvalho Chehab } 488ad85094bSMauro Carvalho Chehab 489ad85094bSMauro Carvalho Chehab static int gc0310_enum_mbus_code(struct v4l2_subdev *sd, 4900d346d2aSTomi Valkeinen struct v4l2_subdev_state *sd_state, 491ad85094bSMauro Carvalho Chehab struct v4l2_subdev_mbus_code_enum *code) 492ad85094bSMauro Carvalho Chehab { 493*9783b96aSHans de Goede /* We support only a single format */ 494*9783b96aSHans de Goede if (code->index) 495ad85094bSMauro Carvalho Chehab return -EINVAL; 496ad85094bSMauro Carvalho Chehab 497ad85094bSMauro Carvalho Chehab code->code = MEDIA_BUS_FMT_SGRBG8_1X8; 498ad85094bSMauro Carvalho Chehab return 0; 499ad85094bSMauro Carvalho Chehab } 500ad85094bSMauro Carvalho Chehab 501ad85094bSMauro Carvalho Chehab static int gc0310_enum_frame_size(struct v4l2_subdev *sd, 5020d346d2aSTomi Valkeinen struct v4l2_subdev_state *sd_state, 503ad85094bSMauro Carvalho Chehab struct v4l2_subdev_frame_size_enum *fse) 504ad85094bSMauro Carvalho Chehab { 505*9783b96aSHans de Goede /* We support only a single resolution */ 506*9783b96aSHans de Goede if (fse->index) 507ad85094bSMauro Carvalho Chehab return -EINVAL; 508ad85094bSMauro Carvalho Chehab 509*9783b96aSHans de Goede fse->min_width = GC0310_NATIVE_WIDTH; 510*9783b96aSHans de Goede fse->max_width = GC0310_NATIVE_WIDTH; 511*9783b96aSHans de Goede fse->min_height = GC0310_NATIVE_HEIGHT; 512*9783b96aSHans de Goede fse->max_height = GC0310_NATIVE_HEIGHT; 513ad85094bSMauro Carvalho Chehab 514ad85094bSMauro Carvalho Chehab return 0; 515ad85094bSMauro Carvalho Chehab } 516ad85094bSMauro Carvalho Chehab 517ad85094bSMauro Carvalho Chehab static int gc0310_g_skip_frames(struct v4l2_subdev *sd, u32 *frames) 518ad85094bSMauro Carvalho Chehab { 519*9783b96aSHans de Goede *frames = GC0310_SKIP_FRAMES; 520ad85094bSMauro Carvalho Chehab return 0; 521ad85094bSMauro Carvalho Chehab } 522ad85094bSMauro Carvalho Chehab 523ad85094bSMauro Carvalho Chehab static const struct v4l2_subdev_sensor_ops gc0310_sensor_ops = { 524ad85094bSMauro Carvalho Chehab .g_skip_frames = gc0310_g_skip_frames, 525ad85094bSMauro Carvalho Chehab }; 526ad85094bSMauro Carvalho Chehab 527ad85094bSMauro Carvalho Chehab static const struct v4l2_subdev_video_ops gc0310_video_ops = { 528ad85094bSMauro Carvalho Chehab .s_stream = gc0310_s_stream, 529ad85094bSMauro Carvalho Chehab .g_frame_interval = gc0310_g_frame_interval, 530ad85094bSMauro Carvalho Chehab }; 531ad85094bSMauro Carvalho Chehab 532ad85094bSMauro Carvalho Chehab static const struct v4l2_subdev_core_ops gc0310_core_ops = { 533ad85094bSMauro Carvalho Chehab .s_power = gc0310_s_power, 534ad85094bSMauro Carvalho Chehab }; 535ad85094bSMauro Carvalho Chehab 536ad85094bSMauro Carvalho Chehab static const struct v4l2_subdev_pad_ops gc0310_pad_ops = { 537ad85094bSMauro Carvalho Chehab .enum_mbus_code = gc0310_enum_mbus_code, 538ad85094bSMauro Carvalho Chehab .enum_frame_size = gc0310_enum_frame_size, 539ad85094bSMauro Carvalho Chehab .get_fmt = gc0310_get_fmt, 540ad85094bSMauro Carvalho Chehab .set_fmt = gc0310_set_fmt, 541ad85094bSMauro Carvalho Chehab }; 542ad85094bSMauro Carvalho Chehab 543ad85094bSMauro Carvalho Chehab static const struct v4l2_subdev_ops gc0310_ops = { 544ad85094bSMauro Carvalho Chehab .core = &gc0310_core_ops, 545ad85094bSMauro Carvalho Chehab .video = &gc0310_video_ops, 546ad85094bSMauro Carvalho Chehab .pad = &gc0310_pad_ops, 547ad85094bSMauro Carvalho Chehab .sensor = &gc0310_sensor_ops, 548ad85094bSMauro Carvalho Chehab }; 549ad85094bSMauro Carvalho Chehab 550ef5fb5d4SHans de Goede static int gc0310_init_controls(struct gc0310_device *dev) 551ef5fb5d4SHans de Goede { 552ef5fb5d4SHans de Goede struct v4l2_ctrl_handler *hdl = &dev->ctrls.handler; 553ef5fb5d4SHans de Goede 554ef5fb5d4SHans de Goede v4l2_ctrl_handler_init(hdl, 2); 555ef5fb5d4SHans de Goede 556ef5fb5d4SHans de Goede /* Use the same lock for controls as for everything else */ 557ef5fb5d4SHans de Goede hdl->lock = &dev->input_lock; 558ef5fb5d4SHans de Goede dev->sd.ctrl_handler = hdl; 559ef5fb5d4SHans de Goede 560ef5fb5d4SHans de Goede dev->ctrls.exposure = 561ef5fb5d4SHans de Goede v4l2_ctrl_new_std(hdl, &ctrl_ops, V4L2_CID_EXPOSURE, 0, 4095, 1, 1023); 562ef5fb5d4SHans de Goede 563ef5fb5d4SHans de Goede /* 32 steps at base gain 1 + 64 half steps at base gain 2 */ 564ef5fb5d4SHans de Goede dev->ctrls.gain = 565ef5fb5d4SHans de Goede v4l2_ctrl_new_std(hdl, &ctrl_ops, V4L2_CID_GAIN, 0, 95, 1, 31); 566ef5fb5d4SHans de Goede 567ef5fb5d4SHans de Goede return hdl->error; 568ef5fb5d4SHans de Goede } 569ef5fb5d4SHans de Goede 570ed5c2f5fSUwe Kleine-König static void gc0310_remove(struct i2c_client *client) 571ad85094bSMauro Carvalho Chehab { 572ad85094bSMauro Carvalho Chehab struct v4l2_subdev *sd = i2c_get_clientdata(client); 573ad85094bSMauro Carvalho Chehab struct gc0310_device *dev = to_gc0310_sensor(sd); 574bdfe0bebSMauro Carvalho Chehab 575ad85094bSMauro Carvalho Chehab dev_dbg(&client->dev, "gc0310_remove...\n"); 576ad85094bSMauro Carvalho Chehab 577ad85094bSMauro Carvalho Chehab dev->platform_data->csi_cfg(sd, 0); 578ad85094bSMauro Carvalho Chehab 579ad85094bSMauro Carvalho Chehab v4l2_device_unregister_subdev(sd); 580ad85094bSMauro Carvalho Chehab media_entity_cleanup(&dev->sd.entity); 581ef5fb5d4SHans de Goede v4l2_ctrl_handler_free(&dev->ctrls.handler); 582ad85094bSMauro Carvalho Chehab kfree(dev); 583ad85094bSMauro Carvalho Chehab } 584ad85094bSMauro Carvalho Chehab 585ad85094bSMauro Carvalho Chehab static int gc0310_probe(struct i2c_client *client) 586ad85094bSMauro Carvalho Chehab { 587ad85094bSMauro Carvalho Chehab struct gc0310_device *dev; 588ad85094bSMauro Carvalho Chehab int ret; 589ad85094bSMauro Carvalho Chehab void *pdata; 590c03496b3SMauro Carvalho Chehab 591ad85094bSMauro Carvalho Chehab dev = kzalloc(sizeof(*dev), GFP_KERNEL); 592ad85094bSMauro Carvalho Chehab if (!dev) 593ad85094bSMauro Carvalho Chehab return -ENOMEM; 594ad85094bSMauro Carvalho Chehab 595ad85094bSMauro Carvalho Chehab mutex_init(&dev->input_lock); 596bdfe0bebSMauro Carvalho Chehab v4l2_i2c_subdev_init(&dev->sd, client, &gc0310_ops); 597*9783b96aSHans de Goede gc0310_fill_format(&dev->mode.fmt); 598ad85094bSMauro Carvalho Chehab 599ad85094bSMauro Carvalho Chehab pdata = gmin_camera_platform_data(&dev->sd, 600ad85094bSMauro Carvalho Chehab ATOMISP_INPUT_FORMAT_RAW_8, 601ad85094bSMauro Carvalho Chehab atomisp_bayer_order_grbg); 602ad85094bSMauro Carvalho Chehab if (!pdata) { 603ad85094bSMauro Carvalho Chehab ret = -EINVAL; 604ad85094bSMauro Carvalho Chehab goto out_free; 605ad85094bSMauro Carvalho Chehab } 606ad85094bSMauro Carvalho Chehab 607ad85094bSMauro Carvalho Chehab ret = gc0310_s_config(&dev->sd, client->irq, pdata); 608ad85094bSMauro Carvalho Chehab if (ret) 609ad85094bSMauro Carvalho Chehab goto out_free; 610ad85094bSMauro Carvalho Chehab 611ad85094bSMauro Carvalho Chehab ret = atomisp_register_i2c_module(&dev->sd, pdata, RAW_CAMERA); 612ad85094bSMauro Carvalho Chehab if (ret) 613ad85094bSMauro Carvalho Chehab goto out_free; 614ad85094bSMauro Carvalho Chehab 615ad85094bSMauro Carvalho Chehab dev->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; 616ad85094bSMauro Carvalho Chehab dev->pad.flags = MEDIA_PAD_FL_SOURCE; 617ad85094bSMauro Carvalho Chehab dev->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; 618ef5fb5d4SHans de Goede 619ef5fb5d4SHans de Goede ret = gc0310_init_controls(dev); 620ad85094bSMauro Carvalho Chehab if (ret) { 621ad85094bSMauro Carvalho Chehab gc0310_remove(client); 622ad85094bSMauro Carvalho Chehab return ret; 623ad85094bSMauro Carvalho Chehab } 624ad85094bSMauro Carvalho Chehab 625ad85094bSMauro Carvalho Chehab ret = media_entity_pads_init(&dev->sd.entity, 1, &dev->pad); 626ad85094bSMauro Carvalho Chehab if (ret) 627ad85094bSMauro Carvalho Chehab gc0310_remove(client); 628ad85094bSMauro Carvalho Chehab 629ad85094bSMauro Carvalho Chehab return ret; 630ad85094bSMauro Carvalho Chehab out_free: 631ad85094bSMauro Carvalho Chehab v4l2_device_unregister_subdev(&dev->sd); 632ad85094bSMauro Carvalho Chehab kfree(dev); 633ad85094bSMauro Carvalho Chehab return ret; 634ad85094bSMauro Carvalho Chehab } 635ad85094bSMauro Carvalho Chehab 636ad85094bSMauro Carvalho Chehab static const struct acpi_device_id gc0310_acpi_match[] = { 637ad85094bSMauro Carvalho Chehab {"XXGC0310"}, 638ad85094bSMauro Carvalho Chehab {"INT0310"}, 639ad85094bSMauro Carvalho Chehab {}, 640ad85094bSMauro Carvalho Chehab }; 641ad85094bSMauro Carvalho Chehab MODULE_DEVICE_TABLE(acpi, gc0310_acpi_match); 642ad85094bSMauro Carvalho Chehab 643ad85094bSMauro Carvalho Chehab static struct i2c_driver gc0310_driver = { 644ad85094bSMauro Carvalho Chehab .driver = { 645ad85094bSMauro Carvalho Chehab .name = "gc0310", 646ad85094bSMauro Carvalho Chehab .acpi_match_table = gc0310_acpi_match, 647ad85094bSMauro Carvalho Chehab }, 648ad85094bSMauro Carvalho Chehab .probe_new = gc0310_probe, 649ad85094bSMauro Carvalho Chehab .remove = gc0310_remove, 650ad85094bSMauro Carvalho Chehab }; 651ad85094bSMauro Carvalho Chehab module_i2c_driver(gc0310_driver); 652ad85094bSMauro Carvalho Chehab 653ad85094bSMauro Carvalho Chehab MODULE_AUTHOR("Lai, Angie <angie.lai@intel.com>"); 654ad85094bSMauro Carvalho Chehab MODULE_DESCRIPTION("A low-level driver for GalaxyCore GC0310 sensors"); 655ad85094bSMauro Carvalho Chehab MODULE_LICENSE("GPL"); 656