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yaml --- r: 366887 b: refs/heads/master c: 855ff38 h: refs/heads/master i: 366885: 5d182f8 366883: ec3ff5a 366879: d2ac612 v: v3
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Frank Schaefer
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Mauro Carvalho Chehab
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Mar 29, 2013
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| --- | ||
| refs/heads/master: b3944c8f676de2e7ccd78151ae6a0518a9c44df6 | ||
| refs/heads/master: 855ff38e880f57814ea5c0cbea853da11fcdf42f |
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| /* | ||
| em28xx-camera.c - driver for Empia EM25xx/27xx/28xx USB video capture devices | ||
| Copyright (C) 2009 Mauro Carvalho Chehab <mchehab@infradead.org> | ||
| Copyright (C) 2013 Frank Schäfer <fschaefer.oss@googlemail.com> | ||
| This program is free software; you can redistribute it and/or modify | ||
| it under the terms of the GNU General Public License as published by | ||
| the Free Software Foundation; either version 2 of the License, or | ||
| (at your option) any later version. | ||
| This program is distributed in the hope that it will be useful, | ||
| but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| GNU General Public License for more details. | ||
| You should have received a copy of the GNU General Public License | ||
| along with this program; if not, write to the Free Software | ||
| Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | ||
| */ | ||
|
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| #include <linux/i2c.h> | ||
| #include <media/mt9v011.h> | ||
| #include <media/v4l2-common.h> | ||
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| #include "em28xx.h" | ||
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| /* FIXME: Should be replaced by a proper mt9m111 driver */ | ||
| static int em28xx_initialize_mt9m111(struct em28xx *dev) | ||
| { | ||
| int i; | ||
| unsigned char regs[][3] = { | ||
| { 0x0d, 0x00, 0x01, }, /* reset and use defaults */ | ||
| { 0x0d, 0x00, 0x00, }, | ||
| { 0x0a, 0x00, 0x21, }, | ||
| { 0x21, 0x04, 0x00, }, /* full readout speed, no row/col skipping */ | ||
| }; | ||
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| for (i = 0; i < ARRAY_SIZE(regs); i++) | ||
| i2c_master_send(&dev->i2c_client[dev->def_i2c_bus], | ||
| ®s[i][0], 3); | ||
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| return 0; | ||
| } | ||
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| /* FIXME: Should be replaced by a proper mt9m001 driver */ | ||
| static int em28xx_initialize_mt9m001(struct em28xx *dev) | ||
| { | ||
| int i; | ||
| unsigned char regs[][3] = { | ||
| { 0x0d, 0x00, 0x01, }, | ||
| { 0x0d, 0x00, 0x00, }, | ||
| { 0x04, 0x05, 0x00, }, /* hres = 1280 */ | ||
| { 0x03, 0x04, 0x00, }, /* vres = 1024 */ | ||
| { 0x20, 0x11, 0x00, }, | ||
| { 0x06, 0x00, 0x10, }, | ||
| { 0x2b, 0x00, 0x24, }, | ||
| { 0x2e, 0x00, 0x24, }, | ||
| { 0x35, 0x00, 0x24, }, | ||
| { 0x2d, 0x00, 0x20, }, | ||
| { 0x2c, 0x00, 0x20, }, | ||
| { 0x09, 0x0a, 0xd4, }, | ||
| { 0x35, 0x00, 0x57, }, | ||
| }; | ||
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| for (i = 0; i < ARRAY_SIZE(regs); i++) | ||
| i2c_master_send(&dev->i2c_client[dev->def_i2c_bus], | ||
| ®s[i][0], 3); | ||
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| return 0; | ||
| } | ||
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|
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| /* | ||
| * This method works for webcams with Micron sensors | ||
| */ | ||
| int em28xx_detect_sensor(struct em28xx *dev) | ||
| { | ||
| int ret; | ||
| char *name; | ||
| u8 reg; | ||
| __be16 id_be; | ||
| u16 id; | ||
|
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| /* Micron sensor detection */ | ||
| dev->i2c_client[dev->def_i2c_bus].addr = 0xba >> 1; | ||
| reg = 0; | ||
| i2c_master_send(&dev->i2c_client[dev->def_i2c_bus], ®, 1); | ||
| ret = i2c_master_recv(&dev->i2c_client[dev->def_i2c_bus], | ||
| (char *)&id_be, 2); | ||
| if (ret != 2) | ||
| return -EINVAL; | ||
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| id = be16_to_cpu(id_be); | ||
| switch (id) { | ||
| case 0x8232: /* mt9v011 640x480 1.3 Mpix sensor */ | ||
| case 0x8243: /* mt9v011 rev B 640x480 1.3 Mpix sensor */ | ||
| name = "mt9v011"; | ||
| dev->em28xx_sensor = EM28XX_MT9V011; | ||
| break; | ||
| case 0x143a: /* MT9M111 as found in the ECS G200 */ | ||
| name = "mt9m111"; | ||
| dev->em28xx_sensor = EM28XX_MT9M111; | ||
| break; | ||
| case 0x8431: | ||
| name = "mt9m001"; | ||
| dev->em28xx_sensor = EM28XX_MT9M001; | ||
| break; | ||
| default: | ||
| em28xx_info("unknown Micron sensor detected: 0x%04x\n", id); | ||
| return -EINVAL; | ||
| } | ||
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| em28xx_info("sensor %s detected\n", name); | ||
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| return 0; | ||
| } | ||
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| int em28xx_init_camera(struct em28xx *dev) | ||
| { | ||
| switch (dev->em28xx_sensor) { | ||
| case EM28XX_MT9V011: | ||
| { | ||
| struct mt9v011_platform_data pdata; | ||
| struct i2c_board_info mt9v011_info = { | ||
| .type = "mt9v011", | ||
| .addr = dev->i2c_client[dev->def_i2c_bus].addr, | ||
| .platform_data = &pdata, | ||
| }; | ||
|
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| dev->sensor_xres = 640; | ||
| dev->sensor_yres = 480; | ||
|
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| /* | ||
| * FIXME: mt9v011 uses I2S speed as xtal clk - at least with | ||
| * the Silvercrest cam I have here for testing - for higher | ||
| * resolutions, a high clock cause horizontal artifacts, so we | ||
| * need to use a lower xclk frequency. | ||
| * Yet, it would be possible to adjust xclk depending on the | ||
| * desired resolution, since this affects directly the | ||
| * frame rate. | ||
| */ | ||
| dev->board.xclk = EM28XX_XCLK_FREQUENCY_4_3MHZ; | ||
| em28xx_write_reg(dev, EM28XX_R0F_XCLK, dev->board.xclk); | ||
| dev->sensor_xtal = 4300000; | ||
| pdata.xtal = dev->sensor_xtal; | ||
| if (NULL == | ||
| v4l2_i2c_new_subdev_board(&dev->v4l2_dev, | ||
| &dev->i2c_adap[dev->def_i2c_bus], | ||
| &mt9v011_info, NULL)) | ||
| return -ENODEV; | ||
| /* probably means GRGB 16 bit bayer */ | ||
| dev->vinmode = 0x0d; | ||
| dev->vinctl = 0x00; | ||
|
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| break; | ||
| } | ||
| case EM28XX_MT9M001: | ||
| dev->sensor_xres = 1280; | ||
| dev->sensor_yres = 1024; | ||
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| em28xx_initialize_mt9m001(dev); | ||
|
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| /* probably means BGGR 16 bit bayer */ | ||
| dev->vinmode = 0x0c; | ||
| dev->vinctl = 0x00; | ||
|
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| break; | ||
| case EM28XX_MT9M111: | ||
| dev->sensor_xres = 640; | ||
| dev->sensor_yres = 512; | ||
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| dev->board.xclk = EM28XX_XCLK_FREQUENCY_48MHZ; | ||
| em28xx_write_reg(dev, EM28XX_R0F_XCLK, dev->board.xclk); | ||
| em28xx_initialize_mt9m111(dev); | ||
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| dev->vinmode = 0x0a; | ||
| dev->vinctl = 0x00; | ||
|
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| break; | ||
| case EM28XX_NOSENSOR: | ||
| default: | ||
| return -EINVAL; | ||
| } | ||
|
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||
| return 0; | ||
| } |
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