Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Driver for MT9P031 CMOS Image Sensor from Aptina |
| 3 | * |
| 4 | * Copyright (C) 2011, Laurent Pinchart <laurent.pinchart@ideasonboard.com> |
| 5 | * Copyright (C) 2011, Javier Martin <javier.martin@vista-silicon.com> |
| 6 | * Copyright (C) 2011, Guennadi Liakhovetski <g.liakhovetski@gmx.de> |
| 7 | * |
| 8 | * Based on the MT9V032 driver and Bastian Hecht's code. |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License version 2 as |
| 12 | * published by the Free Software Foundation. |
| 13 | */ |
| 14 | |
Laurent Pinchart | d674925 | 2012-12-21 16:11:55 -0300 | [diff] [blame] | 15 | #include <linux/clk.h> |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 16 | #include <linux/delay.h> |
| 17 | #include <linux/device.h> |
Laurent Pinchart | 15693b5 | 2012-03-09 10:59:41 -0300 | [diff] [blame] | 18 | #include <linux/gpio.h> |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 19 | #include <linux/i2c.h> |
| 20 | #include <linux/log2.h> |
Lad, Prabhakar | 8d4da37 | 2013-05-26 10:08:54 -0300 | [diff] [blame] | 21 | #include <linux/module.h> |
Sachin Kamat | 6469590 | 2013-10-18 00:07:11 -0300 | [diff] [blame] | 22 | #include <linux/of.h> |
Lad, Prabhakar | 8d4da37 | 2013-05-26 10:08:54 -0300 | [diff] [blame] | 23 | #include <linux/of_gpio.h> |
Philipp Zabel | fd9fdb7 | 2014-02-10 22:01:48 +0100 | [diff] [blame] | 24 | #include <linux/of_graph.h> |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 25 | #include <linux/pm.h> |
Laurent Pinchart | 97f2127 | 2012-05-08 10:10:36 -0300 | [diff] [blame] | 26 | #include <linux/regulator/consumer.h> |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 27 | #include <linux/slab.h> |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 28 | #include <linux/videodev2.h> |
| 29 | |
| 30 | #include <media/mt9p031.h> |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 31 | #include <media/v4l2-ctrls.h> |
| 32 | #include <media/v4l2-device.h> |
| 33 | #include <media/v4l2-subdev.h> |
| 34 | |
Laurent Pinchart | 08cd43c | 2012-02-25 13:25:57 -0300 | [diff] [blame] | 35 | #include "aptina-pll.h" |
| 36 | |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 37 | #define MT9P031_PIXEL_ARRAY_WIDTH 2752 |
| 38 | #define MT9P031_PIXEL_ARRAY_HEIGHT 2004 |
| 39 | |
| 40 | #define MT9P031_CHIP_VERSION 0x00 |
| 41 | #define MT9P031_CHIP_VERSION_VALUE 0x1801 |
| 42 | #define MT9P031_ROW_START 0x01 |
| 43 | #define MT9P031_ROW_START_MIN 0 |
| 44 | #define MT9P031_ROW_START_MAX 2004 |
| 45 | #define MT9P031_ROW_START_DEF 54 |
| 46 | #define MT9P031_COLUMN_START 0x02 |
| 47 | #define MT9P031_COLUMN_START_MIN 0 |
| 48 | #define MT9P031_COLUMN_START_MAX 2750 |
| 49 | #define MT9P031_COLUMN_START_DEF 16 |
| 50 | #define MT9P031_WINDOW_HEIGHT 0x03 |
| 51 | #define MT9P031_WINDOW_HEIGHT_MIN 2 |
| 52 | #define MT9P031_WINDOW_HEIGHT_MAX 2006 |
| 53 | #define MT9P031_WINDOW_HEIGHT_DEF 1944 |
| 54 | #define MT9P031_WINDOW_WIDTH 0x04 |
| 55 | #define MT9P031_WINDOW_WIDTH_MIN 2 |
| 56 | #define MT9P031_WINDOW_WIDTH_MAX 2752 |
| 57 | #define MT9P031_WINDOW_WIDTH_DEF 2592 |
| 58 | #define MT9P031_HORIZONTAL_BLANK 0x05 |
| 59 | #define MT9P031_HORIZONTAL_BLANK_MIN 0 |
| 60 | #define MT9P031_HORIZONTAL_BLANK_MAX 4095 |
| 61 | #define MT9P031_VERTICAL_BLANK 0x06 |
Laurent Pinchart | 5266c98 | 2012-05-23 06:51:55 -0300 | [diff] [blame] | 62 | #define MT9P031_VERTICAL_BLANK_MIN 1 |
| 63 | #define MT9P031_VERTICAL_BLANK_MAX 4096 |
| 64 | #define MT9P031_VERTICAL_BLANK_DEF 26 |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 65 | #define MT9P031_OUTPUT_CONTROL 0x07 |
| 66 | #define MT9P031_OUTPUT_CONTROL_CEN 2 |
| 67 | #define MT9P031_OUTPUT_CONTROL_SYN 1 |
| 68 | #define MT9P031_OUTPUT_CONTROL_DEF 0x1f82 |
| 69 | #define MT9P031_SHUTTER_WIDTH_UPPER 0x08 |
| 70 | #define MT9P031_SHUTTER_WIDTH_LOWER 0x09 |
| 71 | #define MT9P031_SHUTTER_WIDTH_MIN 1 |
| 72 | #define MT9P031_SHUTTER_WIDTH_MAX 1048575 |
| 73 | #define MT9P031_SHUTTER_WIDTH_DEF 1943 |
| 74 | #define MT9P031_PLL_CONTROL 0x10 |
| 75 | #define MT9P031_PLL_CONTROL_PWROFF 0x0050 |
| 76 | #define MT9P031_PLL_CONTROL_PWRON 0x0051 |
| 77 | #define MT9P031_PLL_CONTROL_USEPLL 0x0052 |
| 78 | #define MT9P031_PLL_CONFIG_1 0x11 |
| 79 | #define MT9P031_PLL_CONFIG_2 0x12 |
| 80 | #define MT9P031_PIXEL_CLOCK_CONTROL 0x0a |
Laurent Pinchart | a970449 | 2014-02-09 17:31:47 -0300 | [diff] [blame] | 81 | #define MT9P031_PIXEL_CLOCK_INVERT (1 << 15) |
| 82 | #define MT9P031_PIXEL_CLOCK_SHIFT(n) ((n) << 8) |
| 83 | #define MT9P031_PIXEL_CLOCK_DIVIDE(n) ((n) << 0) |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 84 | #define MT9P031_FRAME_RESTART 0x0b |
| 85 | #define MT9P031_SHUTTER_DELAY 0x0c |
| 86 | #define MT9P031_RST 0x0d |
| 87 | #define MT9P031_RST_ENABLE 1 |
| 88 | #define MT9P031_RST_DISABLE 0 |
| 89 | #define MT9P031_READ_MODE_1 0x1e |
| 90 | #define MT9P031_READ_MODE_2 0x20 |
| 91 | #define MT9P031_READ_MODE_2_ROW_MIR (1 << 15) |
| 92 | #define MT9P031_READ_MODE_2_COL_MIR (1 << 14) |
| 93 | #define MT9P031_READ_MODE_2_ROW_BLC (1 << 6) |
| 94 | #define MT9P031_ROW_ADDRESS_MODE 0x22 |
| 95 | #define MT9P031_COLUMN_ADDRESS_MODE 0x23 |
| 96 | #define MT9P031_GLOBAL_GAIN 0x35 |
| 97 | #define MT9P031_GLOBAL_GAIN_MIN 8 |
| 98 | #define MT9P031_GLOBAL_GAIN_MAX 1024 |
| 99 | #define MT9P031_GLOBAL_GAIN_DEF 8 |
| 100 | #define MT9P031_GLOBAL_GAIN_MULT (1 << 6) |
Laurent Pinchart | dfea001 | 2012-03-09 21:02:57 -0300 | [diff] [blame] | 101 | #define MT9P031_ROW_BLACK_TARGET 0x49 |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 102 | #define MT9P031_ROW_BLACK_DEF_OFFSET 0x4b |
Laurent Pinchart | dfea001 | 2012-03-09 21:02:57 -0300 | [diff] [blame] | 103 | #define MT9P031_GREEN1_OFFSET 0x60 |
| 104 | #define MT9P031_GREEN2_OFFSET 0x61 |
| 105 | #define MT9P031_BLACK_LEVEL_CALIBRATION 0x62 |
| 106 | #define MT9P031_BLC_MANUAL_BLC (1 << 0) |
| 107 | #define MT9P031_RED_OFFSET 0x63 |
| 108 | #define MT9P031_BLUE_OFFSET 0x64 |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 109 | #define MT9P031_TEST_PATTERN 0xa0 |
| 110 | #define MT9P031_TEST_PATTERN_SHIFT 3 |
| 111 | #define MT9P031_TEST_PATTERN_ENABLE (1 << 0) |
| 112 | #define MT9P031_TEST_PATTERN_DISABLE (0 << 0) |
| 113 | #define MT9P031_TEST_PATTERN_GREEN 0xa1 |
| 114 | #define MT9P031_TEST_PATTERN_RED 0xa2 |
| 115 | #define MT9P031_TEST_PATTERN_BLUE 0xa3 |
| 116 | |
Laurent Pinchart | 1c542ba | 2012-03-09 10:42:52 -0300 | [diff] [blame] | 117 | enum mt9p031_model { |
| 118 | MT9P031_MODEL_COLOR, |
| 119 | MT9P031_MODEL_MONOCHROME, |
| 120 | }; |
| 121 | |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 122 | struct mt9p031 { |
| 123 | struct v4l2_subdev subdev; |
| 124 | struct media_pad pad; |
| 125 | struct v4l2_rect crop; /* Sensor window */ |
| 126 | struct v4l2_mbus_framefmt format; |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 127 | struct mt9p031_platform_data *pdata; |
| 128 | struct mutex power_lock; /* lock to protect power_count */ |
| 129 | int power_count; |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 130 | |
Laurent Pinchart | d674925 | 2012-12-21 16:11:55 -0300 | [diff] [blame] | 131 | struct clk *clk; |
Laurent Pinchart | 7997196 | 2013-06-08 04:50:42 -0300 | [diff] [blame] | 132 | struct regulator_bulk_data regulators[3]; |
Laurent Pinchart | 97f2127 | 2012-05-08 10:10:36 -0300 | [diff] [blame] | 133 | |
Laurent Pinchart | 1c542ba | 2012-03-09 10:42:52 -0300 | [diff] [blame] | 134 | enum mt9p031_model model; |
Laurent Pinchart | 08cd43c | 2012-02-25 13:25:57 -0300 | [diff] [blame] | 135 | struct aptina_pll pll; |
Laurent Pinchart | a970449 | 2014-02-09 17:31:47 -0300 | [diff] [blame] | 136 | unsigned int clk_div; |
| 137 | bool use_pll; |
Laurent Pinchart | 15693b5 | 2012-03-09 10:59:41 -0300 | [diff] [blame] | 138 | int reset; |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 139 | |
Laurent Pinchart | dfea001 | 2012-03-09 21:02:57 -0300 | [diff] [blame] | 140 | struct v4l2_ctrl_handler ctrls; |
| 141 | struct v4l2_ctrl *blc_auto; |
| 142 | struct v4l2_ctrl *blc_offset; |
| 143 | |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 144 | /* Registers cache */ |
| 145 | u16 output_control; |
| 146 | u16 mode2; |
| 147 | }; |
| 148 | |
| 149 | static struct mt9p031 *to_mt9p031(struct v4l2_subdev *sd) |
| 150 | { |
| 151 | return container_of(sd, struct mt9p031, subdev); |
| 152 | } |
| 153 | |
| 154 | static int mt9p031_read(struct i2c_client *client, u8 reg) |
| 155 | { |
Laurent Pinchart | c27e3050 | 2011-10-22 04:57:54 -0300 | [diff] [blame] | 156 | return i2c_smbus_read_word_swapped(client, reg); |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 157 | } |
| 158 | |
| 159 | static int mt9p031_write(struct i2c_client *client, u8 reg, u16 data) |
| 160 | { |
Laurent Pinchart | c27e3050 | 2011-10-22 04:57:54 -0300 | [diff] [blame] | 161 | return i2c_smbus_write_word_swapped(client, reg, data); |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 162 | } |
| 163 | |
| 164 | static int mt9p031_set_output_control(struct mt9p031 *mt9p031, u16 clear, |
| 165 | u16 set) |
| 166 | { |
| 167 | struct i2c_client *client = v4l2_get_subdevdata(&mt9p031->subdev); |
| 168 | u16 value = (mt9p031->output_control & ~clear) | set; |
| 169 | int ret; |
| 170 | |
| 171 | ret = mt9p031_write(client, MT9P031_OUTPUT_CONTROL, value); |
| 172 | if (ret < 0) |
| 173 | return ret; |
| 174 | |
| 175 | mt9p031->output_control = value; |
| 176 | return 0; |
| 177 | } |
| 178 | |
| 179 | static int mt9p031_set_mode2(struct mt9p031 *mt9p031, u16 clear, u16 set) |
| 180 | { |
| 181 | struct i2c_client *client = v4l2_get_subdevdata(&mt9p031->subdev); |
| 182 | u16 value = (mt9p031->mode2 & ~clear) | set; |
| 183 | int ret; |
| 184 | |
| 185 | ret = mt9p031_write(client, MT9P031_READ_MODE_2, value); |
| 186 | if (ret < 0) |
| 187 | return ret; |
| 188 | |
| 189 | mt9p031->mode2 = value; |
| 190 | return 0; |
| 191 | } |
| 192 | |
| 193 | static int mt9p031_reset(struct mt9p031 *mt9p031) |
| 194 | { |
| 195 | struct i2c_client *client = v4l2_get_subdevdata(&mt9p031->subdev); |
| 196 | int ret; |
| 197 | |
| 198 | /* Disable chip output, synchronous option update */ |
| 199 | ret = mt9p031_write(client, MT9P031_RST, MT9P031_RST_ENABLE); |
| 200 | if (ret < 0) |
| 201 | return ret; |
| 202 | ret = mt9p031_write(client, MT9P031_RST, MT9P031_RST_DISABLE); |
| 203 | if (ret < 0) |
| 204 | return ret; |
| 205 | |
Laurent Pinchart | a970449 | 2014-02-09 17:31:47 -0300 | [diff] [blame] | 206 | ret = mt9p031_write(client, MT9P031_PIXEL_CLOCK_CONTROL, |
| 207 | MT9P031_PIXEL_CLOCK_DIVIDE(mt9p031->clk_div)); |
| 208 | if (ret < 0) |
| 209 | return ret; |
| 210 | |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 211 | return mt9p031_set_output_control(mt9p031, MT9P031_OUTPUT_CONTROL_CEN, |
| 212 | 0); |
| 213 | } |
| 214 | |
Laurent Pinchart | d674925 | 2012-12-21 16:11:55 -0300 | [diff] [blame] | 215 | static int mt9p031_clk_setup(struct mt9p031 *mt9p031) |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 216 | { |
Laurent Pinchart | 08cd43c | 2012-02-25 13:25:57 -0300 | [diff] [blame] | 217 | static const struct aptina_pll_limits limits = { |
| 218 | .ext_clock_min = 6000000, |
| 219 | .ext_clock_max = 27000000, |
| 220 | .int_clock_min = 2000000, |
| 221 | .int_clock_max = 13500000, |
| 222 | .out_clock_min = 180000000, |
| 223 | .out_clock_max = 360000000, |
| 224 | .pix_clock_max = 96000000, |
| 225 | .n_min = 1, |
| 226 | .n_max = 64, |
| 227 | .m_min = 16, |
| 228 | .m_max = 255, |
| 229 | .p1_min = 1, |
| 230 | .p1_max = 128, |
| 231 | }; |
| 232 | |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 233 | struct i2c_client *client = v4l2_get_subdevdata(&mt9p031->subdev); |
Laurent Pinchart | 08cd43c | 2012-02-25 13:25:57 -0300 | [diff] [blame] | 234 | struct mt9p031_platform_data *pdata = mt9p031->pdata; |
Lad, Prabhakar | ee2d16d | 2014-01-21 02:20:57 -0300 | [diff] [blame] | 235 | int ret; |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 236 | |
Laurent Pinchart | d674925 | 2012-12-21 16:11:55 -0300 | [diff] [blame] | 237 | mt9p031->clk = devm_clk_get(&client->dev, NULL); |
| 238 | if (IS_ERR(mt9p031->clk)) |
| 239 | return PTR_ERR(mt9p031->clk); |
| 240 | |
Lad, Prabhakar | ee2d16d | 2014-01-21 02:20:57 -0300 | [diff] [blame] | 241 | ret = clk_set_rate(mt9p031->clk, pdata->ext_freq); |
| 242 | if (ret < 0) |
| 243 | return ret; |
Laurent Pinchart | d674925 | 2012-12-21 16:11:55 -0300 | [diff] [blame] | 244 | |
Laurent Pinchart | a970449 | 2014-02-09 17:31:47 -0300 | [diff] [blame] | 245 | /* If the external clock frequency is out of bounds for the PLL use the |
| 246 | * pixel clock divider only and disable the PLL. |
| 247 | */ |
| 248 | if (pdata->ext_freq > limits.ext_clock_max) { |
| 249 | unsigned int div; |
| 250 | |
| 251 | div = DIV_ROUND_UP(pdata->ext_freq, pdata->target_freq); |
| 252 | div = roundup_pow_of_two(div) / 2; |
| 253 | |
| 254 | mt9p031->clk_div = max_t(unsigned int, div, 64); |
| 255 | mt9p031->use_pll = false; |
| 256 | |
| 257 | return 0; |
| 258 | } |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 259 | |
Laurent Pinchart | 08cd43c | 2012-02-25 13:25:57 -0300 | [diff] [blame] | 260 | mt9p031->pll.ext_clock = pdata->ext_freq; |
| 261 | mt9p031->pll.pix_clock = pdata->target_freq; |
Laurent Pinchart | a970449 | 2014-02-09 17:31:47 -0300 | [diff] [blame] | 262 | mt9p031->use_pll = true; |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 263 | |
Laurent Pinchart | 08cd43c | 2012-02-25 13:25:57 -0300 | [diff] [blame] | 264 | return aptina_pll_calculate(&client->dev, &limits, &mt9p031->pll); |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 265 | } |
| 266 | |
| 267 | static int mt9p031_pll_enable(struct mt9p031 *mt9p031) |
| 268 | { |
| 269 | struct i2c_client *client = v4l2_get_subdevdata(&mt9p031->subdev); |
| 270 | int ret; |
| 271 | |
Laurent Pinchart | a970449 | 2014-02-09 17:31:47 -0300 | [diff] [blame] | 272 | if (!mt9p031->use_pll) |
| 273 | return 0; |
| 274 | |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 275 | ret = mt9p031_write(client, MT9P031_PLL_CONTROL, |
| 276 | MT9P031_PLL_CONTROL_PWRON); |
| 277 | if (ret < 0) |
| 278 | return ret; |
| 279 | |
| 280 | ret = mt9p031_write(client, MT9P031_PLL_CONFIG_1, |
Laurent Pinchart | 08cd43c | 2012-02-25 13:25:57 -0300 | [diff] [blame] | 281 | (mt9p031->pll.m << 8) | (mt9p031->pll.n - 1)); |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 282 | if (ret < 0) |
| 283 | return ret; |
| 284 | |
Laurent Pinchart | 08cd43c | 2012-02-25 13:25:57 -0300 | [diff] [blame] | 285 | ret = mt9p031_write(client, MT9P031_PLL_CONFIG_2, mt9p031->pll.p1 - 1); |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 286 | if (ret < 0) |
| 287 | return ret; |
| 288 | |
| 289 | usleep_range(1000, 2000); |
| 290 | ret = mt9p031_write(client, MT9P031_PLL_CONTROL, |
| 291 | MT9P031_PLL_CONTROL_PWRON | |
| 292 | MT9P031_PLL_CONTROL_USEPLL); |
| 293 | return ret; |
| 294 | } |
| 295 | |
| 296 | static inline int mt9p031_pll_disable(struct mt9p031 *mt9p031) |
| 297 | { |
| 298 | struct i2c_client *client = v4l2_get_subdevdata(&mt9p031->subdev); |
| 299 | |
Laurent Pinchart | a970449 | 2014-02-09 17:31:47 -0300 | [diff] [blame] | 300 | if (!mt9p031->use_pll) |
| 301 | return 0; |
| 302 | |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 303 | return mt9p031_write(client, MT9P031_PLL_CONTROL, |
| 304 | MT9P031_PLL_CONTROL_PWROFF); |
| 305 | } |
| 306 | |
| 307 | static int mt9p031_power_on(struct mt9p031 *mt9p031) |
| 308 | { |
Laurent Pinchart | 7997196 | 2013-06-08 04:50:42 -0300 | [diff] [blame] | 309 | int ret; |
| 310 | |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 311 | /* Ensure RESET_BAR is low */ |
Laurent Pinchart | 2660a22 | 2013-05-02 07:57:51 -0300 | [diff] [blame] | 312 | if (gpio_is_valid(mt9p031->reset)) { |
Laurent Pinchart | 15693b5 | 2012-03-09 10:59:41 -0300 | [diff] [blame] | 313 | gpio_set_value(mt9p031->reset, 0); |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 314 | usleep_range(1000, 2000); |
| 315 | } |
| 316 | |
Laurent Pinchart | 97f2127 | 2012-05-08 10:10:36 -0300 | [diff] [blame] | 317 | /* Bring up the supplies */ |
Laurent Pinchart | 7997196 | 2013-06-08 04:50:42 -0300 | [diff] [blame] | 318 | ret = regulator_bulk_enable(ARRAY_SIZE(mt9p031->regulators), |
| 319 | mt9p031->regulators); |
| 320 | if (ret < 0) |
| 321 | return ret; |
Laurent Pinchart | 97f2127 | 2012-05-08 10:10:36 -0300 | [diff] [blame] | 322 | |
Laurent Pinchart | e8e4559 | 2014-02-08 13:31:58 -0300 | [diff] [blame] | 323 | /* Enable clock */ |
Lad, Prabhakar | ee2d16d | 2014-01-21 02:20:57 -0300 | [diff] [blame] | 324 | if (mt9p031->clk) { |
| 325 | ret = clk_prepare_enable(mt9p031->clk); |
| 326 | if (ret) { |
| 327 | regulator_bulk_disable(ARRAY_SIZE(mt9p031->regulators), |
| 328 | mt9p031->regulators); |
| 329 | return ret; |
| 330 | } |
| 331 | } |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 332 | |
| 333 | /* Now RESET_BAR must be high */ |
Laurent Pinchart | 2660a22 | 2013-05-02 07:57:51 -0300 | [diff] [blame] | 334 | if (gpio_is_valid(mt9p031->reset)) { |
Laurent Pinchart | 15693b5 | 2012-03-09 10:59:41 -0300 | [diff] [blame] | 335 | gpio_set_value(mt9p031->reset, 1); |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 336 | usleep_range(1000, 2000); |
| 337 | } |
| 338 | |
| 339 | return 0; |
| 340 | } |
| 341 | |
| 342 | static void mt9p031_power_off(struct mt9p031 *mt9p031) |
| 343 | { |
Laurent Pinchart | 2660a22 | 2013-05-02 07:57:51 -0300 | [diff] [blame] | 344 | if (gpio_is_valid(mt9p031->reset)) { |
Laurent Pinchart | 15693b5 | 2012-03-09 10:59:41 -0300 | [diff] [blame] | 345 | gpio_set_value(mt9p031->reset, 0); |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 346 | usleep_range(1000, 2000); |
| 347 | } |
| 348 | |
Laurent Pinchart | 7997196 | 2013-06-08 04:50:42 -0300 | [diff] [blame] | 349 | regulator_bulk_disable(ARRAY_SIZE(mt9p031->regulators), |
| 350 | mt9p031->regulators); |
Laurent Pinchart | 97f2127 | 2012-05-08 10:10:36 -0300 | [diff] [blame] | 351 | |
Laurent Pinchart | d674925 | 2012-12-21 16:11:55 -0300 | [diff] [blame] | 352 | if (mt9p031->clk) |
| 353 | clk_disable_unprepare(mt9p031->clk); |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 354 | } |
| 355 | |
| 356 | static int __mt9p031_set_power(struct mt9p031 *mt9p031, bool on) |
| 357 | { |
| 358 | struct i2c_client *client = v4l2_get_subdevdata(&mt9p031->subdev); |
| 359 | int ret; |
| 360 | |
| 361 | if (!on) { |
| 362 | mt9p031_power_off(mt9p031); |
| 363 | return 0; |
| 364 | } |
| 365 | |
| 366 | ret = mt9p031_power_on(mt9p031); |
| 367 | if (ret < 0) |
| 368 | return ret; |
| 369 | |
| 370 | ret = mt9p031_reset(mt9p031); |
| 371 | if (ret < 0) { |
| 372 | dev_err(&client->dev, "Failed to reset the camera\n"); |
| 373 | return ret; |
| 374 | } |
| 375 | |
| 376 | return v4l2_ctrl_handler_setup(&mt9p031->ctrls); |
| 377 | } |
| 378 | |
| 379 | /* ----------------------------------------------------------------------------- |
| 380 | * V4L2 subdev video operations |
| 381 | */ |
| 382 | |
| 383 | static int mt9p031_set_params(struct mt9p031 *mt9p031) |
| 384 | { |
| 385 | struct i2c_client *client = v4l2_get_subdevdata(&mt9p031->subdev); |
| 386 | struct v4l2_mbus_framefmt *format = &mt9p031->format; |
| 387 | const struct v4l2_rect *crop = &mt9p031->crop; |
| 388 | unsigned int hblank; |
| 389 | unsigned int vblank; |
| 390 | unsigned int xskip; |
| 391 | unsigned int yskip; |
| 392 | unsigned int xbin; |
| 393 | unsigned int ybin; |
| 394 | int ret; |
| 395 | |
| 396 | /* Windows position and size. |
| 397 | * |
| 398 | * TODO: Make sure the start coordinates and window size match the |
| 399 | * skipping, binning and mirroring (see description of registers 2 and 4 |
| 400 | * in table 13, and Binning section on page 41). |
| 401 | */ |
| 402 | ret = mt9p031_write(client, MT9P031_COLUMN_START, crop->left); |
| 403 | if (ret < 0) |
| 404 | return ret; |
| 405 | ret = mt9p031_write(client, MT9P031_ROW_START, crop->top); |
| 406 | if (ret < 0) |
| 407 | return ret; |
| 408 | ret = mt9p031_write(client, MT9P031_WINDOW_WIDTH, crop->width - 1); |
| 409 | if (ret < 0) |
| 410 | return ret; |
| 411 | ret = mt9p031_write(client, MT9P031_WINDOW_HEIGHT, crop->height - 1); |
| 412 | if (ret < 0) |
| 413 | return ret; |
| 414 | |
| 415 | /* Row and column binning and skipping. Use the maximum binning value |
| 416 | * compatible with the skipping settings. |
| 417 | */ |
| 418 | xskip = DIV_ROUND_CLOSEST(crop->width, format->width); |
| 419 | yskip = DIV_ROUND_CLOSEST(crop->height, format->height); |
| 420 | xbin = 1 << (ffs(xskip) - 1); |
| 421 | ybin = 1 << (ffs(yskip) - 1); |
| 422 | |
| 423 | ret = mt9p031_write(client, MT9P031_COLUMN_ADDRESS_MODE, |
| 424 | ((xbin - 1) << 4) | (xskip - 1)); |
| 425 | if (ret < 0) |
| 426 | return ret; |
| 427 | ret = mt9p031_write(client, MT9P031_ROW_ADDRESS_MODE, |
| 428 | ((ybin - 1) << 4) | (yskip - 1)); |
| 429 | if (ret < 0) |
| 430 | return ret; |
| 431 | |
| 432 | /* Blanking - use minimum value for horizontal blanking and default |
| 433 | * value for vertical blanking. |
| 434 | */ |
Laurent Pinchart | 5266c98 | 2012-05-23 06:51:55 -0300 | [diff] [blame] | 435 | hblank = 346 * ybin + 64 + (80 >> min_t(unsigned int, xbin, 3)); |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 436 | vblank = MT9P031_VERTICAL_BLANK_DEF; |
| 437 | |
Laurent Pinchart | 5266c98 | 2012-05-23 06:51:55 -0300 | [diff] [blame] | 438 | ret = mt9p031_write(client, MT9P031_HORIZONTAL_BLANK, hblank - 1); |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 439 | if (ret < 0) |
| 440 | return ret; |
Laurent Pinchart | 5266c98 | 2012-05-23 06:51:55 -0300 | [diff] [blame] | 441 | ret = mt9p031_write(client, MT9P031_VERTICAL_BLANK, vblank - 1); |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 442 | if (ret < 0) |
| 443 | return ret; |
| 444 | |
| 445 | return ret; |
| 446 | } |
| 447 | |
| 448 | static int mt9p031_s_stream(struct v4l2_subdev *subdev, int enable) |
| 449 | { |
| 450 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); |
| 451 | int ret; |
| 452 | |
| 453 | if (!enable) { |
| 454 | /* Stop sensor readout */ |
| 455 | ret = mt9p031_set_output_control(mt9p031, |
| 456 | MT9P031_OUTPUT_CONTROL_CEN, 0); |
| 457 | if (ret < 0) |
| 458 | return ret; |
| 459 | |
| 460 | return mt9p031_pll_disable(mt9p031); |
| 461 | } |
| 462 | |
| 463 | ret = mt9p031_set_params(mt9p031); |
| 464 | if (ret < 0) |
| 465 | return ret; |
| 466 | |
| 467 | /* Switch to master "normal" mode */ |
| 468 | ret = mt9p031_set_output_control(mt9p031, 0, |
| 469 | MT9P031_OUTPUT_CONTROL_CEN); |
| 470 | if (ret < 0) |
| 471 | return ret; |
| 472 | |
| 473 | return mt9p031_pll_enable(mt9p031); |
| 474 | } |
| 475 | |
| 476 | static int mt9p031_enum_mbus_code(struct v4l2_subdev *subdev, |
| 477 | struct v4l2_subdev_fh *fh, |
| 478 | struct v4l2_subdev_mbus_code_enum *code) |
| 479 | { |
| 480 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); |
| 481 | |
| 482 | if (code->pad || code->index) |
| 483 | return -EINVAL; |
| 484 | |
| 485 | code->code = mt9p031->format.code; |
| 486 | return 0; |
| 487 | } |
| 488 | |
| 489 | static int mt9p031_enum_frame_size(struct v4l2_subdev *subdev, |
| 490 | struct v4l2_subdev_fh *fh, |
| 491 | struct v4l2_subdev_frame_size_enum *fse) |
| 492 | { |
| 493 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); |
| 494 | |
| 495 | if (fse->index >= 8 || fse->code != mt9p031->format.code) |
| 496 | return -EINVAL; |
| 497 | |
| 498 | fse->min_width = MT9P031_WINDOW_WIDTH_DEF |
| 499 | / min_t(unsigned int, 7, fse->index + 1); |
| 500 | fse->max_width = fse->min_width; |
| 501 | fse->min_height = MT9P031_WINDOW_HEIGHT_DEF / (fse->index + 1); |
| 502 | fse->max_height = fse->min_height; |
| 503 | |
| 504 | return 0; |
| 505 | } |
| 506 | |
| 507 | static struct v4l2_mbus_framefmt * |
| 508 | __mt9p031_get_pad_format(struct mt9p031 *mt9p031, struct v4l2_subdev_fh *fh, |
| 509 | unsigned int pad, u32 which) |
| 510 | { |
| 511 | switch (which) { |
| 512 | case V4L2_SUBDEV_FORMAT_TRY: |
| 513 | return v4l2_subdev_get_try_format(fh, pad); |
| 514 | case V4L2_SUBDEV_FORMAT_ACTIVE: |
| 515 | return &mt9p031->format; |
| 516 | default: |
| 517 | return NULL; |
| 518 | } |
| 519 | } |
| 520 | |
| 521 | static struct v4l2_rect * |
| 522 | __mt9p031_get_pad_crop(struct mt9p031 *mt9p031, struct v4l2_subdev_fh *fh, |
| 523 | unsigned int pad, u32 which) |
| 524 | { |
| 525 | switch (which) { |
| 526 | case V4L2_SUBDEV_FORMAT_TRY: |
| 527 | return v4l2_subdev_get_try_crop(fh, pad); |
| 528 | case V4L2_SUBDEV_FORMAT_ACTIVE: |
| 529 | return &mt9p031->crop; |
| 530 | default: |
| 531 | return NULL; |
| 532 | } |
| 533 | } |
| 534 | |
| 535 | static int mt9p031_get_format(struct v4l2_subdev *subdev, |
| 536 | struct v4l2_subdev_fh *fh, |
| 537 | struct v4l2_subdev_format *fmt) |
| 538 | { |
| 539 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); |
| 540 | |
| 541 | fmt->format = *__mt9p031_get_pad_format(mt9p031, fh, fmt->pad, |
| 542 | fmt->which); |
| 543 | return 0; |
| 544 | } |
| 545 | |
| 546 | static int mt9p031_set_format(struct v4l2_subdev *subdev, |
| 547 | struct v4l2_subdev_fh *fh, |
| 548 | struct v4l2_subdev_format *format) |
| 549 | { |
| 550 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); |
| 551 | struct v4l2_mbus_framefmt *__format; |
| 552 | struct v4l2_rect *__crop; |
| 553 | unsigned int width; |
| 554 | unsigned int height; |
| 555 | unsigned int hratio; |
| 556 | unsigned int vratio; |
| 557 | |
| 558 | __crop = __mt9p031_get_pad_crop(mt9p031, fh, format->pad, |
| 559 | format->which); |
| 560 | |
| 561 | /* Clamp the width and height to avoid dividing by zero. */ |
| 562 | width = clamp_t(unsigned int, ALIGN(format->format.width, 2), |
Ricardo Ribalda | f90580c | 2013-11-26 05:31:42 -0300 | [diff] [blame] | 563 | max_t(unsigned int, __crop->width / 7, |
| 564 | MT9P031_WINDOW_WIDTH_MIN), |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 565 | __crop->width); |
| 566 | height = clamp_t(unsigned int, ALIGN(format->format.height, 2), |
Ricardo Ribalda | f90580c | 2013-11-26 05:31:42 -0300 | [diff] [blame] | 567 | max_t(unsigned int, __crop->height / 8, |
| 568 | MT9P031_WINDOW_HEIGHT_MIN), |
| 569 | __crop->height); |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 570 | |
| 571 | hratio = DIV_ROUND_CLOSEST(__crop->width, width); |
| 572 | vratio = DIV_ROUND_CLOSEST(__crop->height, height); |
| 573 | |
| 574 | __format = __mt9p031_get_pad_format(mt9p031, fh, format->pad, |
| 575 | format->which); |
| 576 | __format->width = __crop->width / hratio; |
| 577 | __format->height = __crop->height / vratio; |
| 578 | |
| 579 | format->format = *__format; |
| 580 | |
| 581 | return 0; |
| 582 | } |
| 583 | |
| 584 | static int mt9p031_get_crop(struct v4l2_subdev *subdev, |
| 585 | struct v4l2_subdev_fh *fh, |
| 586 | struct v4l2_subdev_crop *crop) |
| 587 | { |
| 588 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); |
| 589 | |
| 590 | crop->rect = *__mt9p031_get_pad_crop(mt9p031, fh, crop->pad, |
| 591 | crop->which); |
| 592 | return 0; |
| 593 | } |
| 594 | |
| 595 | static int mt9p031_set_crop(struct v4l2_subdev *subdev, |
| 596 | struct v4l2_subdev_fh *fh, |
| 597 | struct v4l2_subdev_crop *crop) |
| 598 | { |
| 599 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); |
| 600 | struct v4l2_mbus_framefmt *__format; |
| 601 | struct v4l2_rect *__crop; |
| 602 | struct v4l2_rect rect; |
| 603 | |
| 604 | /* Clamp the crop rectangle boundaries and align them to a multiple of 2 |
| 605 | * pixels to ensure a GRBG Bayer pattern. |
| 606 | */ |
| 607 | rect.left = clamp(ALIGN(crop->rect.left, 2), MT9P031_COLUMN_START_MIN, |
| 608 | MT9P031_COLUMN_START_MAX); |
| 609 | rect.top = clamp(ALIGN(crop->rect.top, 2), MT9P031_ROW_START_MIN, |
| 610 | MT9P031_ROW_START_MAX); |
Ricardo Ribalda | f90580c | 2013-11-26 05:31:42 -0300 | [diff] [blame] | 611 | rect.width = clamp_t(unsigned int, ALIGN(crop->rect.width, 2), |
| 612 | MT9P031_WINDOW_WIDTH_MIN, |
| 613 | MT9P031_WINDOW_WIDTH_MAX); |
| 614 | rect.height = clamp_t(unsigned int, ALIGN(crop->rect.height, 2), |
| 615 | MT9P031_WINDOW_HEIGHT_MIN, |
| 616 | MT9P031_WINDOW_HEIGHT_MAX); |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 617 | |
Ricardo Ribalda | f90580c | 2013-11-26 05:31:42 -0300 | [diff] [blame] | 618 | rect.width = min_t(unsigned int, rect.width, |
| 619 | MT9P031_PIXEL_ARRAY_WIDTH - rect.left); |
| 620 | rect.height = min_t(unsigned int, rect.height, |
| 621 | MT9P031_PIXEL_ARRAY_HEIGHT - rect.top); |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 622 | |
| 623 | __crop = __mt9p031_get_pad_crop(mt9p031, fh, crop->pad, crop->which); |
| 624 | |
| 625 | if (rect.width != __crop->width || rect.height != __crop->height) { |
| 626 | /* Reset the output image size if the crop rectangle size has |
| 627 | * been modified. |
| 628 | */ |
| 629 | __format = __mt9p031_get_pad_format(mt9p031, fh, crop->pad, |
| 630 | crop->which); |
| 631 | __format->width = rect.width; |
| 632 | __format->height = rect.height; |
| 633 | } |
| 634 | |
| 635 | *__crop = rect; |
| 636 | crop->rect = rect; |
| 637 | |
| 638 | return 0; |
| 639 | } |
| 640 | |
| 641 | /* ----------------------------------------------------------------------------- |
| 642 | * V4L2 subdev control operations |
| 643 | */ |
| 644 | |
Laurent Pinchart | dfea001 | 2012-03-09 21:02:57 -0300 | [diff] [blame] | 645 | #define V4L2_CID_BLC_AUTO (V4L2_CID_USER_BASE | 0x1002) |
| 646 | #define V4L2_CID_BLC_TARGET_LEVEL (V4L2_CID_USER_BASE | 0x1003) |
| 647 | #define V4L2_CID_BLC_ANALOG_OFFSET (V4L2_CID_USER_BASE | 0x1004) |
| 648 | #define V4L2_CID_BLC_DIGITAL_OFFSET (V4L2_CID_USER_BASE | 0x1005) |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 649 | |
Laurent Pinchart | 535ec21 | 2014-05-08 10:03:37 -0300 | [diff] [blame] | 650 | static int mt9p031_restore_blc(struct mt9p031 *mt9p031) |
| 651 | { |
| 652 | struct i2c_client *client = v4l2_get_subdevdata(&mt9p031->subdev); |
| 653 | int ret; |
| 654 | |
| 655 | if (mt9p031->blc_auto->cur.val != 0) { |
| 656 | ret = mt9p031_set_mode2(mt9p031, 0, |
| 657 | MT9P031_READ_MODE_2_ROW_BLC); |
| 658 | if (ret < 0) |
| 659 | return ret; |
| 660 | } |
| 661 | |
| 662 | if (mt9p031->blc_offset->cur.val != 0) { |
| 663 | ret = mt9p031_write(client, MT9P031_ROW_BLACK_TARGET, |
| 664 | mt9p031->blc_offset->cur.val); |
| 665 | if (ret < 0) |
| 666 | return ret; |
| 667 | } |
| 668 | |
| 669 | return 0; |
| 670 | } |
| 671 | |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 672 | static int mt9p031_s_ctrl(struct v4l2_ctrl *ctrl) |
| 673 | { |
| 674 | struct mt9p031 *mt9p031 = |
| 675 | container_of(ctrl->handler, struct mt9p031, ctrls); |
| 676 | struct i2c_client *client = v4l2_get_subdevdata(&mt9p031->subdev); |
| 677 | u16 data; |
| 678 | int ret; |
| 679 | |
Laurent Pinchart | 8bf54c4 | 2014-05-07 12:34:34 -0300 | [diff] [blame] | 680 | if (ctrl->flags & V4L2_CTRL_FLAG_INACTIVE) |
| 681 | return 0; |
| 682 | |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 683 | switch (ctrl->id) { |
| 684 | case V4L2_CID_EXPOSURE: |
| 685 | ret = mt9p031_write(client, MT9P031_SHUTTER_WIDTH_UPPER, |
| 686 | (ctrl->val >> 16) & 0xffff); |
| 687 | if (ret < 0) |
| 688 | return ret; |
| 689 | |
| 690 | return mt9p031_write(client, MT9P031_SHUTTER_WIDTH_LOWER, |
| 691 | ctrl->val & 0xffff); |
| 692 | |
| 693 | case V4L2_CID_GAIN: |
| 694 | /* Gain is controlled by 2 analog stages and a digital stage. |
| 695 | * Valid values for the 3 stages are |
| 696 | * |
| 697 | * Stage Min Max Step |
| 698 | * ------------------------------------------ |
| 699 | * First analog stage x1 x2 1 |
| 700 | * Second analog stage x1 x4 0.125 |
| 701 | * Digital stage x1 x16 0.125 |
| 702 | * |
| 703 | * To minimize noise, the gain stages should be used in the |
| 704 | * second analog stage, first analog stage, digital stage order. |
| 705 | * Gain from a previous stage should be pushed to its maximum |
| 706 | * value before the next stage is used. |
| 707 | */ |
| 708 | if (ctrl->val <= 32) { |
| 709 | data = ctrl->val; |
| 710 | } else if (ctrl->val <= 64) { |
| 711 | ctrl->val &= ~1; |
| 712 | data = (1 << 6) | (ctrl->val >> 1); |
| 713 | } else { |
| 714 | ctrl->val &= ~7; |
| 715 | data = ((ctrl->val - 64) << 5) | (1 << 6) | 32; |
| 716 | } |
| 717 | |
| 718 | return mt9p031_write(client, MT9P031_GLOBAL_GAIN, data); |
| 719 | |
| 720 | case V4L2_CID_HFLIP: |
| 721 | if (ctrl->val) |
| 722 | return mt9p031_set_mode2(mt9p031, |
| 723 | 0, MT9P031_READ_MODE_2_COL_MIR); |
| 724 | else |
| 725 | return mt9p031_set_mode2(mt9p031, |
| 726 | MT9P031_READ_MODE_2_COL_MIR, 0); |
| 727 | |
| 728 | case V4L2_CID_VFLIP: |
| 729 | if (ctrl->val) |
| 730 | return mt9p031_set_mode2(mt9p031, |
| 731 | 0, MT9P031_READ_MODE_2_ROW_MIR); |
| 732 | else |
| 733 | return mt9p031_set_mode2(mt9p031, |
| 734 | MT9P031_READ_MODE_2_ROW_MIR, 0); |
| 735 | |
| 736 | case V4L2_CID_TEST_PATTERN: |
Laurent Pinchart | 8bf54c4 | 2014-05-07 12:34:34 -0300 | [diff] [blame] | 737 | /* The digital side of the Black Level Calibration function must |
| 738 | * be disabled when generating a test pattern to avoid artifacts |
| 739 | * in the image. Activate (deactivate) the BLC-related controls |
| 740 | * when the test pattern is enabled (disabled). |
| 741 | */ |
| 742 | v4l2_ctrl_activate(mt9p031->blc_auto, ctrl->val == 0); |
| 743 | v4l2_ctrl_activate(mt9p031->blc_offset, ctrl->val == 0); |
| 744 | |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 745 | if (!ctrl->val) { |
Laurent Pinchart | 8bf54c4 | 2014-05-07 12:34:34 -0300 | [diff] [blame] | 746 | /* Restore the BLC settings. */ |
Laurent Pinchart | 535ec21 | 2014-05-08 10:03:37 -0300 | [diff] [blame] | 747 | ret = mt9p031_restore_blc(mt9p031); |
| 748 | if (ret < 0) |
| 749 | return ret; |
| 750 | |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 751 | return mt9p031_write(client, MT9P031_TEST_PATTERN, |
| 752 | MT9P031_TEST_PATTERN_DISABLE); |
| 753 | } |
| 754 | |
| 755 | ret = mt9p031_write(client, MT9P031_TEST_PATTERN_GREEN, 0x05a0); |
| 756 | if (ret < 0) |
| 757 | return ret; |
| 758 | ret = mt9p031_write(client, MT9P031_TEST_PATTERN_RED, 0x0a50); |
| 759 | if (ret < 0) |
| 760 | return ret; |
| 761 | ret = mt9p031_write(client, MT9P031_TEST_PATTERN_BLUE, 0x0aa0); |
| 762 | if (ret < 0) |
| 763 | return ret; |
| 764 | |
Laurent Pinchart | 8bf54c4 | 2014-05-07 12:34:34 -0300 | [diff] [blame] | 765 | /* Disable digital BLC when generating a test pattern. */ |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 766 | ret = mt9p031_set_mode2(mt9p031, MT9P031_READ_MODE_2_ROW_BLC, |
| 767 | 0); |
| 768 | if (ret < 0) |
| 769 | return ret; |
Laurent Pinchart | dfea001 | 2012-03-09 21:02:57 -0300 | [diff] [blame] | 770 | |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 771 | ret = mt9p031_write(client, MT9P031_ROW_BLACK_DEF_OFFSET, 0); |
| 772 | if (ret < 0) |
| 773 | return ret; |
| 774 | |
| 775 | return mt9p031_write(client, MT9P031_TEST_PATTERN, |
| 776 | ((ctrl->val - 1) << MT9P031_TEST_PATTERN_SHIFT) |
| 777 | | MT9P031_TEST_PATTERN_ENABLE); |
Laurent Pinchart | dfea001 | 2012-03-09 21:02:57 -0300 | [diff] [blame] | 778 | |
| 779 | case V4L2_CID_BLC_AUTO: |
| 780 | ret = mt9p031_set_mode2(mt9p031, |
| 781 | ctrl->val ? 0 : MT9P031_READ_MODE_2_ROW_BLC, |
| 782 | ctrl->val ? MT9P031_READ_MODE_2_ROW_BLC : 0); |
| 783 | if (ret < 0) |
| 784 | return ret; |
| 785 | |
| 786 | return mt9p031_write(client, MT9P031_BLACK_LEVEL_CALIBRATION, |
| 787 | ctrl->val ? 0 : MT9P031_BLC_MANUAL_BLC); |
| 788 | |
| 789 | case V4L2_CID_BLC_TARGET_LEVEL: |
| 790 | return mt9p031_write(client, MT9P031_ROW_BLACK_TARGET, |
| 791 | ctrl->val); |
| 792 | |
| 793 | case V4L2_CID_BLC_ANALOG_OFFSET: |
| 794 | data = ctrl->val & ((1 << 9) - 1); |
| 795 | |
| 796 | ret = mt9p031_write(client, MT9P031_GREEN1_OFFSET, data); |
| 797 | if (ret < 0) |
| 798 | return ret; |
| 799 | ret = mt9p031_write(client, MT9P031_GREEN2_OFFSET, data); |
| 800 | if (ret < 0) |
| 801 | return ret; |
| 802 | ret = mt9p031_write(client, MT9P031_RED_OFFSET, data); |
| 803 | if (ret < 0) |
| 804 | return ret; |
| 805 | return mt9p031_write(client, MT9P031_BLUE_OFFSET, data); |
| 806 | |
| 807 | case V4L2_CID_BLC_DIGITAL_OFFSET: |
| 808 | return mt9p031_write(client, MT9P031_ROW_BLACK_DEF_OFFSET, |
| 809 | ctrl->val & ((1 << 12) - 1)); |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 810 | } |
Laurent Pinchart | dfea001 | 2012-03-09 21:02:57 -0300 | [diff] [blame] | 811 | |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 812 | return 0; |
| 813 | } |
| 814 | |
| 815 | static struct v4l2_ctrl_ops mt9p031_ctrl_ops = { |
| 816 | .s_ctrl = mt9p031_s_ctrl, |
| 817 | }; |
| 818 | |
| 819 | static const char * const mt9p031_test_pattern_menu[] = { |
| 820 | "Disabled", |
| 821 | "Color Field", |
| 822 | "Horizontal Gradient", |
| 823 | "Vertical Gradient", |
| 824 | "Diagonal Gradient", |
| 825 | "Classic Test Pattern", |
| 826 | "Walking 1s", |
| 827 | "Monochrome Horizontal Bars", |
| 828 | "Monochrome Vertical Bars", |
| 829 | "Vertical Color Bars", |
| 830 | }; |
| 831 | |
| 832 | static const struct v4l2_ctrl_config mt9p031_ctrls[] = { |
| 833 | { |
| 834 | .ops = &mt9p031_ctrl_ops, |
Laurent Pinchart | dfea001 | 2012-03-09 21:02:57 -0300 | [diff] [blame] | 835 | .id = V4L2_CID_BLC_AUTO, |
| 836 | .type = V4L2_CTRL_TYPE_BOOLEAN, |
| 837 | .name = "BLC, Auto", |
| 838 | .min = 0, |
| 839 | .max = 1, |
| 840 | .step = 1, |
| 841 | .def = 1, |
| 842 | .flags = 0, |
| 843 | }, { |
| 844 | .ops = &mt9p031_ctrl_ops, |
| 845 | .id = V4L2_CID_BLC_TARGET_LEVEL, |
| 846 | .type = V4L2_CTRL_TYPE_INTEGER, |
| 847 | .name = "BLC Target Level", |
| 848 | .min = 0, |
| 849 | .max = 4095, |
| 850 | .step = 1, |
| 851 | .def = 168, |
| 852 | .flags = 0, |
| 853 | }, { |
| 854 | .ops = &mt9p031_ctrl_ops, |
| 855 | .id = V4L2_CID_BLC_ANALOG_OFFSET, |
| 856 | .type = V4L2_CTRL_TYPE_INTEGER, |
| 857 | .name = "BLC Analog Offset", |
| 858 | .min = -255, |
| 859 | .max = 255, |
| 860 | .step = 1, |
| 861 | .def = 32, |
| 862 | .flags = 0, |
| 863 | }, { |
| 864 | .ops = &mt9p031_ctrl_ops, |
| 865 | .id = V4L2_CID_BLC_DIGITAL_OFFSET, |
| 866 | .type = V4L2_CTRL_TYPE_INTEGER, |
| 867 | .name = "BLC Digital Offset", |
| 868 | .min = -2048, |
| 869 | .max = 2047, |
| 870 | .step = 1, |
| 871 | .def = 40, |
| 872 | .flags = 0, |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 873 | } |
| 874 | }; |
| 875 | |
| 876 | /* ----------------------------------------------------------------------------- |
| 877 | * V4L2 subdev core operations |
| 878 | */ |
| 879 | |
| 880 | static int mt9p031_set_power(struct v4l2_subdev *subdev, int on) |
| 881 | { |
| 882 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); |
| 883 | int ret = 0; |
| 884 | |
| 885 | mutex_lock(&mt9p031->power_lock); |
| 886 | |
| 887 | /* If the power count is modified from 0 to != 0 or from != 0 to 0, |
| 888 | * update the power state. |
| 889 | */ |
| 890 | if (mt9p031->power_count == !on) { |
| 891 | ret = __mt9p031_set_power(mt9p031, !!on); |
| 892 | if (ret < 0) |
| 893 | goto out; |
| 894 | } |
| 895 | |
| 896 | /* Update the power count. */ |
| 897 | mt9p031->power_count += on ? 1 : -1; |
| 898 | WARN_ON(mt9p031->power_count < 0); |
| 899 | |
| 900 | out: |
| 901 | mutex_unlock(&mt9p031->power_lock); |
| 902 | return ret; |
| 903 | } |
| 904 | |
| 905 | /* ----------------------------------------------------------------------------- |
| 906 | * V4L2 subdev internal operations |
| 907 | */ |
| 908 | |
| 909 | static int mt9p031_registered(struct v4l2_subdev *subdev) |
| 910 | { |
| 911 | struct i2c_client *client = v4l2_get_subdevdata(subdev); |
| 912 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); |
| 913 | s32 data; |
| 914 | int ret; |
| 915 | |
| 916 | ret = mt9p031_power_on(mt9p031); |
| 917 | if (ret < 0) { |
| 918 | dev_err(&client->dev, "MT9P031 power up failed\n"); |
| 919 | return ret; |
| 920 | } |
| 921 | |
| 922 | /* Read out the chip version register */ |
| 923 | data = mt9p031_read(client, MT9P031_CHIP_VERSION); |
Guennadi Liakhovetski | bbcc9fa | 2013-04-18 18:35:39 -0300 | [diff] [blame] | 924 | mt9p031_power_off(mt9p031); |
| 925 | |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 926 | if (data != MT9P031_CHIP_VERSION_VALUE) { |
| 927 | dev_err(&client->dev, "MT9P031 not detected, wrong version " |
| 928 | "0x%04x\n", data); |
| 929 | return -ENODEV; |
| 930 | } |
| 931 | |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 932 | dev_info(&client->dev, "MT9P031 detected at address 0x%02x\n", |
| 933 | client->addr); |
| 934 | |
Guennadi Liakhovetski | bbcc9fa | 2013-04-18 18:35:39 -0300 | [diff] [blame] | 935 | return 0; |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 936 | } |
| 937 | |
| 938 | static int mt9p031_open(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh) |
| 939 | { |
| 940 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); |
| 941 | struct v4l2_mbus_framefmt *format; |
| 942 | struct v4l2_rect *crop; |
| 943 | |
| 944 | crop = v4l2_subdev_get_try_crop(fh, 0); |
| 945 | crop->left = MT9P031_COLUMN_START_DEF; |
| 946 | crop->top = MT9P031_ROW_START_DEF; |
| 947 | crop->width = MT9P031_WINDOW_WIDTH_DEF; |
| 948 | crop->height = MT9P031_WINDOW_HEIGHT_DEF; |
| 949 | |
| 950 | format = v4l2_subdev_get_try_format(fh, 0); |
| 951 | |
Laurent Pinchart | 1c542ba | 2012-03-09 10:42:52 -0300 | [diff] [blame] | 952 | if (mt9p031->model == MT9P031_MODEL_MONOCHROME) |
Boris BREZILLON | f5fe58f | 2014-11-10 14:28:29 -0300 | [diff] [blame] | 953 | format->code = MEDIA_BUS_FMT_Y12_1X12; |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 954 | else |
Boris BREZILLON | f5fe58f | 2014-11-10 14:28:29 -0300 | [diff] [blame] | 955 | format->code = MEDIA_BUS_FMT_SGRBG12_1X12; |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 956 | |
| 957 | format->width = MT9P031_WINDOW_WIDTH_DEF; |
| 958 | format->height = MT9P031_WINDOW_HEIGHT_DEF; |
| 959 | format->field = V4L2_FIELD_NONE; |
| 960 | format->colorspace = V4L2_COLORSPACE_SRGB; |
| 961 | |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 962 | return mt9p031_set_power(subdev, 1); |
| 963 | } |
| 964 | |
| 965 | static int mt9p031_close(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh) |
| 966 | { |
| 967 | return mt9p031_set_power(subdev, 0); |
| 968 | } |
| 969 | |
| 970 | static struct v4l2_subdev_core_ops mt9p031_subdev_core_ops = { |
| 971 | .s_power = mt9p031_set_power, |
| 972 | }; |
| 973 | |
| 974 | static struct v4l2_subdev_video_ops mt9p031_subdev_video_ops = { |
| 975 | .s_stream = mt9p031_s_stream, |
| 976 | }; |
| 977 | |
| 978 | static struct v4l2_subdev_pad_ops mt9p031_subdev_pad_ops = { |
| 979 | .enum_mbus_code = mt9p031_enum_mbus_code, |
| 980 | .enum_frame_size = mt9p031_enum_frame_size, |
| 981 | .get_fmt = mt9p031_get_format, |
| 982 | .set_fmt = mt9p031_set_format, |
| 983 | .get_crop = mt9p031_get_crop, |
| 984 | .set_crop = mt9p031_set_crop, |
| 985 | }; |
| 986 | |
| 987 | static struct v4l2_subdev_ops mt9p031_subdev_ops = { |
| 988 | .core = &mt9p031_subdev_core_ops, |
| 989 | .video = &mt9p031_subdev_video_ops, |
| 990 | .pad = &mt9p031_subdev_pad_ops, |
| 991 | }; |
| 992 | |
| 993 | static const struct v4l2_subdev_internal_ops mt9p031_subdev_internal_ops = { |
| 994 | .registered = mt9p031_registered, |
| 995 | .open = mt9p031_open, |
| 996 | .close = mt9p031_close, |
| 997 | }; |
| 998 | |
| 999 | /* ----------------------------------------------------------------------------- |
| 1000 | * Driver initialization and probing |
| 1001 | */ |
| 1002 | |
Lad, Prabhakar | 8d4da37 | 2013-05-26 10:08:54 -0300 | [diff] [blame] | 1003 | static struct mt9p031_platform_data * |
| 1004 | mt9p031_get_pdata(struct i2c_client *client) |
| 1005 | { |
| 1006 | struct mt9p031_platform_data *pdata; |
| 1007 | struct device_node *np; |
| 1008 | |
| 1009 | if (!IS_ENABLED(CONFIG_OF) || !client->dev.of_node) |
| 1010 | return client->dev.platform_data; |
| 1011 | |
Philipp Zabel | fd9fdb7 | 2014-02-10 22:01:48 +0100 | [diff] [blame] | 1012 | np = of_graph_get_next_endpoint(client->dev.of_node, NULL); |
Lad, Prabhakar | 8d4da37 | 2013-05-26 10:08:54 -0300 | [diff] [blame] | 1013 | if (!np) |
| 1014 | return NULL; |
| 1015 | |
| 1016 | pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL); |
| 1017 | if (!pdata) |
| 1018 | goto done; |
| 1019 | |
| 1020 | pdata->reset = of_get_named_gpio(client->dev.of_node, "reset-gpios", 0); |
| 1021 | of_property_read_u32(np, "input-clock-frequency", &pdata->ext_freq); |
| 1022 | of_property_read_u32(np, "pixel-clock-frequency", &pdata->target_freq); |
| 1023 | |
| 1024 | done: |
| 1025 | of_node_put(np); |
| 1026 | return pdata; |
| 1027 | } |
| 1028 | |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 1029 | static int mt9p031_probe(struct i2c_client *client, |
| 1030 | const struct i2c_device_id *did) |
| 1031 | { |
Lad, Prabhakar | 8d4da37 | 2013-05-26 10:08:54 -0300 | [diff] [blame] | 1032 | struct mt9p031_platform_data *pdata = mt9p031_get_pdata(client); |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 1033 | struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); |
| 1034 | struct mt9p031 *mt9p031; |
| 1035 | unsigned int i; |
| 1036 | int ret; |
| 1037 | |
| 1038 | if (pdata == NULL) { |
| 1039 | dev_err(&client->dev, "No platform data\n"); |
| 1040 | return -EINVAL; |
| 1041 | } |
| 1042 | |
| 1043 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) { |
| 1044 | dev_warn(&client->dev, |
| 1045 | "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n"); |
| 1046 | return -EIO; |
| 1047 | } |
| 1048 | |
Laurent Pinchart | 37b9f21 | 2012-12-21 16:34:06 -0300 | [diff] [blame] | 1049 | mt9p031 = devm_kzalloc(&client->dev, sizeof(*mt9p031), GFP_KERNEL); |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 1050 | if (mt9p031 == NULL) |
| 1051 | return -ENOMEM; |
| 1052 | |
| 1053 | mt9p031->pdata = pdata; |
| 1054 | mt9p031->output_control = MT9P031_OUTPUT_CONTROL_DEF; |
| 1055 | mt9p031->mode2 = MT9P031_READ_MODE_2_ROW_BLC; |
Laurent Pinchart | 1c542ba | 2012-03-09 10:42:52 -0300 | [diff] [blame] | 1056 | mt9p031->model = did->driver_data; |
Laurent Pinchart | 15693b5 | 2012-03-09 10:59:41 -0300 | [diff] [blame] | 1057 | mt9p031->reset = -1; |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 1058 | |
Laurent Pinchart | 7997196 | 2013-06-08 04:50:42 -0300 | [diff] [blame] | 1059 | mt9p031->regulators[0].supply = "vdd"; |
| 1060 | mt9p031->regulators[1].supply = "vdd_io"; |
| 1061 | mt9p031->regulators[2].supply = "vaa"; |
Laurent Pinchart | 97f2127 | 2012-05-08 10:10:36 -0300 | [diff] [blame] | 1062 | |
Laurent Pinchart | 7997196 | 2013-06-08 04:50:42 -0300 | [diff] [blame] | 1063 | ret = devm_regulator_bulk_get(&client->dev, 3, mt9p031->regulators); |
| 1064 | if (ret < 0) { |
Laurent Pinchart | 97f2127 | 2012-05-08 10:10:36 -0300 | [diff] [blame] | 1065 | dev_err(&client->dev, "Unable to get regulators\n"); |
Laurent Pinchart | 7997196 | 2013-06-08 04:50:42 -0300 | [diff] [blame] | 1066 | return ret; |
Laurent Pinchart | 97f2127 | 2012-05-08 10:10:36 -0300 | [diff] [blame] | 1067 | } |
| 1068 | |
Lad, Prabhakar | b28d701 | 2012-09-25 09:35:43 -0300 | [diff] [blame] | 1069 | v4l2_ctrl_handler_init(&mt9p031->ctrls, ARRAY_SIZE(mt9p031_ctrls) + 6); |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 1070 | |
| 1071 | v4l2_ctrl_new_std(&mt9p031->ctrls, &mt9p031_ctrl_ops, |
| 1072 | V4L2_CID_EXPOSURE, MT9P031_SHUTTER_WIDTH_MIN, |
| 1073 | MT9P031_SHUTTER_WIDTH_MAX, 1, |
| 1074 | MT9P031_SHUTTER_WIDTH_DEF); |
| 1075 | v4l2_ctrl_new_std(&mt9p031->ctrls, &mt9p031_ctrl_ops, |
| 1076 | V4L2_CID_GAIN, MT9P031_GLOBAL_GAIN_MIN, |
| 1077 | MT9P031_GLOBAL_GAIN_MAX, 1, MT9P031_GLOBAL_GAIN_DEF); |
| 1078 | v4l2_ctrl_new_std(&mt9p031->ctrls, &mt9p031_ctrl_ops, |
| 1079 | V4L2_CID_HFLIP, 0, 1, 1, 0); |
| 1080 | v4l2_ctrl_new_std(&mt9p031->ctrls, &mt9p031_ctrl_ops, |
| 1081 | V4L2_CID_VFLIP, 0, 1, 1, 0); |
Laurent Pinchart | 8d690c4 | 2012-05-09 09:55:58 -0300 | [diff] [blame] | 1082 | v4l2_ctrl_new_std(&mt9p031->ctrls, &mt9p031_ctrl_ops, |
| 1083 | V4L2_CID_PIXEL_RATE, pdata->target_freq, |
| 1084 | pdata->target_freq, 1, pdata->target_freq); |
Lad, Prabhakar | b28d701 | 2012-09-25 09:35:43 -0300 | [diff] [blame] | 1085 | v4l2_ctrl_new_std_menu_items(&mt9p031->ctrls, &mt9p031_ctrl_ops, |
| 1086 | V4L2_CID_TEST_PATTERN, |
| 1087 | ARRAY_SIZE(mt9p031_test_pattern_menu) - 1, 0, |
| 1088 | 0, mt9p031_test_pattern_menu); |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 1089 | |
| 1090 | for (i = 0; i < ARRAY_SIZE(mt9p031_ctrls); ++i) |
| 1091 | v4l2_ctrl_new_custom(&mt9p031->ctrls, &mt9p031_ctrls[i], NULL); |
| 1092 | |
| 1093 | mt9p031->subdev.ctrl_handler = &mt9p031->ctrls; |
| 1094 | |
Laurent Pinchart | dfea001 | 2012-03-09 21:02:57 -0300 | [diff] [blame] | 1095 | if (mt9p031->ctrls.error) { |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 1096 | printk(KERN_INFO "%s: control initialization error %d\n", |
| 1097 | __func__, mt9p031->ctrls.error); |
Laurent Pinchart | dfea001 | 2012-03-09 21:02:57 -0300 | [diff] [blame] | 1098 | ret = mt9p031->ctrls.error; |
| 1099 | goto done; |
| 1100 | } |
| 1101 | |
| 1102 | mt9p031->blc_auto = v4l2_ctrl_find(&mt9p031->ctrls, V4L2_CID_BLC_AUTO); |
| 1103 | mt9p031->blc_offset = v4l2_ctrl_find(&mt9p031->ctrls, |
| 1104 | V4L2_CID_BLC_DIGITAL_OFFSET); |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 1105 | |
| 1106 | mutex_init(&mt9p031->power_lock); |
| 1107 | v4l2_i2c_subdev_init(&mt9p031->subdev, client, &mt9p031_subdev_ops); |
| 1108 | mt9p031->subdev.internal_ops = &mt9p031_subdev_internal_ops; |
| 1109 | |
| 1110 | mt9p031->pad.flags = MEDIA_PAD_FL_SOURCE; |
| 1111 | ret = media_entity_init(&mt9p031->subdev.entity, 1, &mt9p031->pad, 0); |
| 1112 | if (ret < 0) |
| 1113 | goto done; |
| 1114 | |
| 1115 | mt9p031->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; |
| 1116 | |
| 1117 | mt9p031->crop.width = MT9P031_WINDOW_WIDTH_DEF; |
| 1118 | mt9p031->crop.height = MT9P031_WINDOW_HEIGHT_DEF; |
| 1119 | mt9p031->crop.left = MT9P031_COLUMN_START_DEF; |
| 1120 | mt9p031->crop.top = MT9P031_ROW_START_DEF; |
| 1121 | |
Laurent Pinchart | 1c542ba | 2012-03-09 10:42:52 -0300 | [diff] [blame] | 1122 | if (mt9p031->model == MT9P031_MODEL_MONOCHROME) |
Boris BREZILLON | f5fe58f | 2014-11-10 14:28:29 -0300 | [diff] [blame] | 1123 | mt9p031->format.code = MEDIA_BUS_FMT_Y12_1X12; |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 1124 | else |
Boris BREZILLON | f5fe58f | 2014-11-10 14:28:29 -0300 | [diff] [blame] | 1125 | mt9p031->format.code = MEDIA_BUS_FMT_SGRBG12_1X12; |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 1126 | |
| 1127 | mt9p031->format.width = MT9P031_WINDOW_WIDTH_DEF; |
| 1128 | mt9p031->format.height = MT9P031_WINDOW_HEIGHT_DEF; |
| 1129 | mt9p031->format.field = V4L2_FIELD_NONE; |
| 1130 | mt9p031->format.colorspace = V4L2_COLORSPACE_SRGB; |
| 1131 | |
Laurent Pinchart | 2660a22 | 2013-05-02 07:57:51 -0300 | [diff] [blame] | 1132 | if (gpio_is_valid(pdata->reset)) { |
Laurent Pinchart | 37b9f21 | 2012-12-21 16:34:06 -0300 | [diff] [blame] | 1133 | ret = devm_gpio_request_one(&client->dev, pdata->reset, |
| 1134 | GPIOF_OUT_INIT_LOW, "mt9p031_rst"); |
Laurent Pinchart | 15693b5 | 2012-03-09 10:59:41 -0300 | [diff] [blame] | 1135 | if (ret < 0) |
| 1136 | goto done; |
| 1137 | |
| 1138 | mt9p031->reset = pdata->reset; |
| 1139 | } |
| 1140 | |
Laurent Pinchart | d674925 | 2012-12-21 16:11:55 -0300 | [diff] [blame] | 1141 | ret = mt9p031_clk_setup(mt9p031); |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 1142 | |
| 1143 | done: |
| 1144 | if (ret < 0) { |
| 1145 | v4l2_ctrl_handler_free(&mt9p031->ctrls); |
| 1146 | media_entity_cleanup(&mt9p031->subdev.entity); |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 1147 | } |
| 1148 | |
| 1149 | return ret; |
| 1150 | } |
| 1151 | |
| 1152 | static int mt9p031_remove(struct i2c_client *client) |
| 1153 | { |
| 1154 | struct v4l2_subdev *subdev = i2c_get_clientdata(client); |
| 1155 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); |
| 1156 | |
| 1157 | v4l2_ctrl_handler_free(&mt9p031->ctrls); |
| 1158 | v4l2_device_unregister_subdev(subdev); |
| 1159 | media_entity_cleanup(&subdev->entity); |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 1160 | |
| 1161 | return 0; |
| 1162 | } |
| 1163 | |
| 1164 | static const struct i2c_device_id mt9p031_id[] = { |
Laurent Pinchart | 1c542ba | 2012-03-09 10:42:52 -0300 | [diff] [blame] | 1165 | { "mt9p031", MT9P031_MODEL_COLOR }, |
| 1166 | { "mt9p031m", MT9P031_MODEL_MONOCHROME }, |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 1167 | { } |
| 1168 | }; |
| 1169 | MODULE_DEVICE_TABLE(i2c, mt9p031_id); |
| 1170 | |
Lad, Prabhakar | 8d4da37 | 2013-05-26 10:08:54 -0300 | [diff] [blame] | 1171 | #if IS_ENABLED(CONFIG_OF) |
| 1172 | static const struct of_device_id mt9p031_of_match[] = { |
| 1173 | { .compatible = "aptina,mt9p031", }, |
| 1174 | { .compatible = "aptina,mt9p031m", }, |
| 1175 | { /* sentinel */ }, |
| 1176 | }; |
| 1177 | MODULE_DEVICE_TABLE(of, mt9p031_of_match); |
| 1178 | #endif |
| 1179 | |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 1180 | static struct i2c_driver mt9p031_i2c_driver = { |
| 1181 | .driver = { |
Lad, Prabhakar | 8d4da37 | 2013-05-26 10:08:54 -0300 | [diff] [blame] | 1182 | .of_match_table = of_match_ptr(mt9p031_of_match), |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 1183 | .name = "mt9p031", |
| 1184 | }, |
| 1185 | .probe = mt9p031_probe, |
| 1186 | .remove = mt9p031_remove, |
| 1187 | .id_table = mt9p031_id, |
| 1188 | }; |
| 1189 | |
Axel Lin | c6e8d86 | 2012-02-12 06:56:32 -0300 | [diff] [blame] | 1190 | module_i2c_driver(mt9p031_i2c_driver); |
Javier Martin | 418d93a | 2011-06-20 13:21:16 +0200 | [diff] [blame] | 1191 | |
| 1192 | MODULE_DESCRIPTION("Aptina MT9P031 Camera driver"); |
| 1193 | MODULE_AUTHOR("Bastian Hecht <hechtb@gmail.com>"); |
| 1194 | MODULE_LICENSE("GPL v2"); |