| /* |
| * Syntek STK1135 subdriver |
| * |
| * Copyright (c) 2013 Ondrej Zary |
| * |
| * Based on Syntekdriver (stk11xx) by Nicolas VIVIEN: |
| * http://syntekdriver.sourceforge.net |
| * |
| * 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 |
| * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| |
| #define MODULE_NAME "stk1135" |
| |
| #include "gspca.h" |
| #include "stk1135.h" |
| |
| MODULE_AUTHOR("Ondrej Zary"); |
| MODULE_DESCRIPTION("Syntek STK1135 USB Camera Driver"); |
| MODULE_LICENSE("GPL"); |
| |
| |
| /* specific webcam descriptor */ |
| struct sd { |
| struct gspca_dev gspca_dev; /* !! must be the first item */ |
| |
| u8 pkt_seq; |
| u8 sensor_page; |
| |
| bool flip_status; |
| u8 flip_debounce; |
| |
| struct v4l2_ctrl *hflip; |
| struct v4l2_ctrl *vflip; |
| }; |
| |
| static const struct v4l2_pix_format stk1135_modes[] = { |
| /* default mode (this driver supports variable resolution) */ |
| {640, 480, V4L2_PIX_FMT_SBGGR8, V4L2_FIELD_NONE, |
| .bytesperline = 640, |
| .sizeimage = 640 * 480, |
| .colorspace = V4L2_COLORSPACE_SRGB}, |
| }; |
| |
| /* -- read a register -- */ |
| static u8 reg_r(struct gspca_dev *gspca_dev, u16 index) |
| { |
| struct usb_device *dev = gspca_dev->dev; |
| int ret; |
| |
| if (gspca_dev->usb_err < 0) |
| return 0; |
| ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), |
| 0x00, |
| USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| 0x00, |
| index, |
| gspca_dev->usb_buf, 1, |
| 500); |
| |
| PDEBUG(D_USBI, "reg_r 0x%x=0x%02x", index, gspca_dev->usb_buf[0]); |
| if (ret < 0) { |
| pr_err("reg_r 0x%x err %d\n", index, ret); |
| gspca_dev->usb_err = ret; |
| return 0; |
| } |
| |
| return gspca_dev->usb_buf[0]; |
| } |
| |
| /* -- write a register -- */ |
| static void reg_w(struct gspca_dev *gspca_dev, u16 index, u8 val) |
| { |
| int ret; |
| struct usb_device *dev = gspca_dev->dev; |
| |
| if (gspca_dev->usb_err < 0) |
| return; |
| ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
| 0x01, |
| USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
| val, |
| index, |
| NULL, |
| 0, |
| 500); |
| PDEBUG(D_USBO, "reg_w 0x%x:=0x%02x", index, val); |
| if (ret < 0) { |
| pr_err("reg_w 0x%x err %d\n", index, ret); |
| gspca_dev->usb_err = ret; |
| } |
| } |
| |
| static void reg_w_mask(struct gspca_dev *gspca_dev, u16 index, u8 val, u8 mask) |
| { |
| val = (reg_r(gspca_dev, index) & ~mask) | (val & mask); |
| reg_w(gspca_dev, index, val); |
| } |
| |
| /* this function is called at probe time */ |
| static int sd_config(struct gspca_dev *gspca_dev, |
| const struct usb_device_id *id) |
| { |
| gspca_dev->cam.cam_mode = stk1135_modes; |
| gspca_dev->cam.nmodes = ARRAY_SIZE(stk1135_modes); |
| return 0; |
| } |
| |
| static int stk1135_serial_wait_ready(struct gspca_dev *gspca_dev) |
| { |
| int i = 0; |
| u8 val; |
| |
| do { |
| val = reg_r(gspca_dev, STK1135_REG_SICTL + 1); |
| if (i++ > 500) { /* maximum retry count */ |
| pr_err("serial bus timeout: status=0x%02x\n", val); |
| return -1; |
| } |
| /* repeat if BUSY or WRITE/READ not finished */ |
| } while ((val & 0x10) || !(val & 0x05)); |
| |
| return 0; |
| } |
| |
| static u8 sensor_read_8(struct gspca_dev *gspca_dev, u8 addr) |
| { |
| reg_w(gspca_dev, STK1135_REG_SBUSR, addr); |
| /* begin read */ |
| reg_w(gspca_dev, STK1135_REG_SICTL, 0x20); |
| /* wait until finished */ |
| if (stk1135_serial_wait_ready(gspca_dev)) { |
| pr_err("Sensor read failed\n"); |
| return 0; |
| } |
| |
| return reg_r(gspca_dev, STK1135_REG_SBUSR + 1); |
| } |
| |
| static u16 sensor_read_16(struct gspca_dev *gspca_dev, u8 addr) |
| { |
| return (sensor_read_8(gspca_dev, addr) << 8) | |
| sensor_read_8(gspca_dev, 0xf1); |
| } |
| |
| static void sensor_write_8(struct gspca_dev *gspca_dev, u8 addr, u8 data) |
| { |
| /* load address and data registers */ |
| reg_w(gspca_dev, STK1135_REG_SBUSW, addr); |
| reg_w(gspca_dev, STK1135_REG_SBUSW + 1, data); |
| /* begin write */ |
| reg_w(gspca_dev, STK1135_REG_SICTL, 0x01); |
| /* wait until finished */ |
| if (stk1135_serial_wait_ready(gspca_dev)) { |
| pr_err("Sensor write failed\n"); |
| return; |
| } |
| } |
| |
| static void sensor_write_16(struct gspca_dev *gspca_dev, u8 addr, u16 data) |
| { |
| sensor_write_8(gspca_dev, addr, data >> 8); |
| sensor_write_8(gspca_dev, 0xf1, data & 0xff); |
| } |
| |
| static void sensor_set_page(struct gspca_dev *gspca_dev, u8 page) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| if (page != sd->sensor_page) { |
| sensor_write_16(gspca_dev, 0xf0, page); |
| sd->sensor_page = page; |
| } |
| } |
| |
| static u16 sensor_read(struct gspca_dev *gspca_dev, u16 reg) |
| { |
| sensor_set_page(gspca_dev, reg >> 8); |
| return sensor_read_16(gspca_dev, reg & 0xff); |
| } |
| |
| static void sensor_write(struct gspca_dev *gspca_dev, u16 reg, u16 val) |
| { |
| sensor_set_page(gspca_dev, reg >> 8); |
| sensor_write_16(gspca_dev, reg & 0xff, val); |
| } |
| |
| static void sensor_write_mask(struct gspca_dev *gspca_dev, |
| u16 reg, u16 val, u16 mask) |
| { |
| val = (sensor_read(gspca_dev, reg) & ~mask) | (val & mask); |
| sensor_write(gspca_dev, reg, val); |
| } |
| |
| struct sensor_val { |
| u16 reg; |
| u16 val; |
| }; |
| |
| /* configure MT9M112 sensor */ |
| static void stk1135_configure_mt9m112(struct gspca_dev *gspca_dev) |
| { |
| static const struct sensor_val cfg[] = { |
| /* restart&reset, chip enable, reserved */ |
| { 0x00d, 0x000b }, { 0x00d, 0x0008 }, { 0x035, 0x0022 }, |
| /* mode ctl: AWB on, AE both, clip aper corr, defect corr, AE */ |
| { 0x106, 0x700e }, |
| |
| { 0x2dd, 0x18e0 }, /* B-R thresholds, */ |
| |
| /* AWB */ |
| { 0x21f, 0x0180 }, /* Cb and Cr limits */ |
| { 0x220, 0xc814 }, { 0x221, 0x8080 }, /* lum limits, RGB gain */ |
| { 0x222, 0xa078 }, { 0x223, 0xa078 }, /* R, B limit */ |
| { 0x224, 0x5f20 }, { 0x228, 0xea02 }, /* mtx adj lim, adv ctl */ |
| { 0x229, 0x867a }, /* wide gates */ |
| |
| /* Color correction */ |
| /* imager gains base, delta, delta signs */ |
| { 0x25e, 0x594c }, { 0x25f, 0x4d51 }, { 0x260, 0x0002 }, |
| /* AWB adv ctl 2, gain offs */ |
| { 0x2ef, 0x0008 }, { 0x2f2, 0x0000 }, |
| /* base matrix signs, scale K1-5, K6-9 */ |
| { 0x202, 0x00ee }, { 0x203, 0x3923 }, { 0x204, 0x0724 }, |
| /* base matrix coef */ |
| { 0x209, 0x00cd }, { 0x20a, 0x0093 }, { 0x20b, 0x0004 },/*K1-3*/ |
| { 0x20c, 0x005c }, { 0x20d, 0x00d9 }, { 0x20e, 0x0053 },/*K4-6*/ |
| { 0x20f, 0x0008 }, { 0x210, 0x0091 }, { 0x211, 0x00cf },/*K7-9*/ |
| { 0x215, 0x0000 }, /* delta mtx signs */ |
| /* delta matrix coef */ |
| { 0x216, 0x0000 }, { 0x217, 0x0000 }, { 0x218, 0x0000 },/*D1-3*/ |
| { 0x219, 0x0000 }, { 0x21a, 0x0000 }, { 0x21b, 0x0000 },/*D4-6*/ |
| { 0x21c, 0x0000 }, { 0x21d, 0x0000 }, { 0x21e, 0x0000 },/*D7-9*/ |
| /* enable & disable manual WB to apply color corr. settings */ |
| { 0x106, 0xf00e }, { 0x106, 0x700e }, |
| |
| /* Lens shading correction */ |
| { 0x180, 0x0007 }, /* control */ |
| /* vertical knee 0, 2+1, 4+3 */ |
| { 0x181, 0xde13 }, { 0x182, 0xebe2 }, { 0x183, 0x00f6 }, /* R */ |
| { 0x184, 0xe114 }, { 0x185, 0xeadd }, { 0x186, 0xfdf6 }, /* G */ |
| { 0x187, 0xe511 }, { 0x188, 0xede6 }, { 0x189, 0xfbf7 }, /* B */ |
| /* horizontal knee 0, 2+1, 4+3, 5 */ |
| { 0x18a, 0xd613 }, { 0x18b, 0xedec }, /* R .. */ |
| { 0x18c, 0xf9f2 }, { 0x18d, 0x0000 }, /* .. R */ |
| { 0x18e, 0xd815 }, { 0x18f, 0xe9ea }, /* G .. */ |
| { 0x190, 0xf9f1 }, { 0x191, 0x0002 }, /* .. G */ |
| { 0x192, 0xde10 }, { 0x193, 0xefef }, /* B .. */ |
| { 0x194, 0xfbf4 }, { 0x195, 0x0002 }, /* .. B */ |
| /* vertical knee 6+5, 8+7 */ |
| { 0x1b6, 0x0e06 }, { 0x1b7, 0x2713 }, /* R */ |
| { 0x1b8, 0x1106 }, { 0x1b9, 0x2713 }, /* G */ |
| { 0x1ba, 0x0c03 }, { 0x1bb, 0x2a0f }, /* B */ |
| /* horizontal knee 7+6, 9+8, 10 */ |
| { 0x1bc, 0x1208 }, { 0x1bd, 0x1a16 }, { 0x1be, 0x0022 }, /* R */ |
| { 0x1bf, 0x150a }, { 0x1c0, 0x1c1a }, { 0x1c1, 0x002d }, /* G */ |
| { 0x1c2, 0x1109 }, { 0x1c3, 0x1414 }, { 0x1c4, 0x002a }, /* B */ |
| { 0x106, 0x740e }, /* enable lens shading correction */ |
| |
| /* Gamma correction - context A */ |
| { 0x153, 0x0b03 }, { 0x154, 0x4722 }, { 0x155, 0xac82 }, |
| { 0x156, 0xdac7 }, { 0x157, 0xf5e9 }, { 0x158, 0xff00 }, |
| /* Gamma correction - context B */ |
| { 0x1dc, 0x0b03 }, { 0x1dd, 0x4722 }, { 0x1de, 0xac82 }, |
| { 0x1df, 0xdac7 }, { 0x1e0, 0xf5e9 }, { 0x1e1, 0xff00 }, |
| |
| /* output format: RGB, invert output pixclock, output bayer */ |
| { 0x13a, 0x4300 }, { 0x19b, 0x4300 }, /* for context A, B */ |
| { 0x108, 0x0180 }, /* format control - enable bayer row flip */ |
| |
| { 0x22f, 0xd100 }, { 0x29c, 0xd100 }, /* AE A, B */ |
| |
| /* default prg conf, prg ctl - by 0x2d2, prg advance - PA1 */ |
| { 0x2d2, 0x0000 }, { 0x2cc, 0x0004 }, { 0x2cb, 0x0001 }, |
| |
| { 0x22e, 0x0c3c }, { 0x267, 0x1010 }, /* AE tgt ctl, gain lim */ |
| |
| /* PLL */ |
| { 0x065, 0xa000 }, /* clk ctl - enable PLL (clear bit 14) */ |
| { 0x066, 0x2003 }, { 0x067, 0x0501 }, /* PLL M=128, N=3, P=1 */ |
| { 0x065, 0x2000 }, /* disable PLL bypass (clear bit 15) */ |
| |
| { 0x005, 0x01b8 }, { 0x007, 0x00d8 }, /* horiz blanking B, A */ |
| |
| /* AE line size, shutter delay limit */ |
| { 0x239, 0x06c0 }, { 0x23b, 0x040e }, /* for context A */ |
| { 0x23a, 0x06c0 }, { 0x23c, 0x0564 }, /* for context B */ |
| /* shutter width basis 60Hz, 50Hz */ |
| { 0x257, 0x0208 }, { 0x258, 0x0271 }, /* for context A */ |
| { 0x259, 0x0209 }, { 0x25a, 0x0271 }, /* for context B */ |
| |
| { 0x25c, 0x120d }, { 0x25d, 0x1712 }, /* flicker 60Hz, 50Hz */ |
| { 0x264, 0x5e1c }, /* reserved */ |
| /* flicker, AE gain limits, gain zone limits */ |
| { 0x25b, 0x0003 }, { 0x236, 0x7810 }, { 0x237, 0x8304 }, |
| |
| { 0x008, 0x0021 }, /* vert blanking A */ |
| }; |
| int i; |
| u16 width, height; |
| |
| for (i = 0; i < ARRAY_SIZE(cfg); i++) |
| sensor_write(gspca_dev, cfg[i].reg, cfg[i].val); |
| |
| /* set output size */ |
| width = gspca_dev->pixfmt.width; |
| height = gspca_dev->pixfmt.height; |
| if (width <= 640 && height <= 512) { /* context A (half readout speed)*/ |
| sensor_write(gspca_dev, 0x1a7, width); |
| sensor_write(gspca_dev, 0x1aa, height); |
| /* set read mode context A */ |
| sensor_write(gspca_dev, 0x0c8, 0x0000); |
| /* set resize, read mode, vblank, hblank context A */ |
| sensor_write(gspca_dev, 0x2c8, 0x0000); |
| } else { /* context B (full readout speed) */ |
| sensor_write(gspca_dev, 0x1a1, width); |
| sensor_write(gspca_dev, 0x1a4, height); |
| /* set read mode context B */ |
| sensor_write(gspca_dev, 0x0c8, 0x0008); |
| /* set resize, read mode, vblank, hblank context B */ |
| sensor_write(gspca_dev, 0x2c8, 0x040b); |
| } |
| } |
| |
| static void stk1135_configure_clock(struct gspca_dev *gspca_dev) |
| { |
| /* configure SCLKOUT */ |
| reg_w(gspca_dev, STK1135_REG_TMGEN, 0x12); |
| /* set 1 clock per pixel */ |
| /* and positive edge clocked pulse high when pixel counter = 0 */ |
| reg_w(gspca_dev, STK1135_REG_TCP1 + 0, 0x41); |
| reg_w(gspca_dev, STK1135_REG_TCP1 + 1, 0x00); |
| reg_w(gspca_dev, STK1135_REG_TCP1 + 2, 0x00); |
| reg_w(gspca_dev, STK1135_REG_TCP1 + 3, 0x00); |
| |
| /* enable CLKOUT for sensor */ |
| reg_w(gspca_dev, STK1135_REG_SENSO + 0, 0x10); |
| /* disable STOP clock */ |
| reg_w(gspca_dev, STK1135_REG_SENSO + 1, 0x00); |
| /* set lower 8 bits of PLL feedback divider */ |
| reg_w(gspca_dev, STK1135_REG_SENSO + 3, 0x07); |
| /* set other PLL parameters */ |
| reg_w(gspca_dev, STK1135_REG_PLLFD, 0x06); |
| /* enable timing generator */ |
| reg_w(gspca_dev, STK1135_REG_TMGEN, 0x80); |
| /* enable PLL */ |
| reg_w(gspca_dev, STK1135_REG_SENSO + 2, 0x04); |
| |
| /* set serial interface clock divider (30MHz/0x1f*16+2) = 60240 kHz) */ |
| reg_w(gspca_dev, STK1135_REG_SICTL + 2, 0x1f); |
| } |
| |
| static void stk1135_camera_disable(struct gspca_dev *gspca_dev) |
| { |
| /* set capture end Y position to 0 */ |
| reg_w(gspca_dev, STK1135_REG_CIEPO + 2, 0x00); |
| reg_w(gspca_dev, STK1135_REG_CIEPO + 3, 0x00); |
| /* disable capture */ |
| reg_w_mask(gspca_dev, STK1135_REG_SCTRL, 0x00, 0x80); |
| |
| /* enable sensor standby and diasble chip enable */ |
| sensor_write_mask(gspca_dev, 0x00d, 0x0004, 0x000c); |
| |
| /* disable PLL */ |
| reg_w_mask(gspca_dev, STK1135_REG_SENSO + 2, 0x00, 0x01); |
| /* disable timing generator */ |
| reg_w(gspca_dev, STK1135_REG_TMGEN, 0x00); |
| /* enable STOP clock */ |
| reg_w(gspca_dev, STK1135_REG_SENSO + 1, 0x20); |
| /* disable CLKOUT for sensor */ |
| reg_w(gspca_dev, STK1135_REG_SENSO, 0x00); |
| |
| /* disable sensor (GPIO5) and enable GPIO0,3,6 (?) - sensor standby? */ |
| reg_w(gspca_dev, STK1135_REG_GCTRL, 0x49); |
| } |
| |
| /* this function is called at probe and resume time */ |
| static int sd_init(struct gspca_dev *gspca_dev) |
| { |
| u16 sensor_id; |
| char *sensor_name; |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| /* set GPIO3,4,5,6 direction to output */ |
| reg_w(gspca_dev, STK1135_REG_GCTRL + 2, 0x78); |
| /* enable sensor (GPIO5) */ |
| reg_w(gspca_dev, STK1135_REG_GCTRL, (1 << 5)); |
| /* disable ROM interface */ |
| reg_w(gspca_dev, STK1135_REG_GCTRL + 3, 0x80); |
| /* enable interrupts from GPIO8 (flip sensor) and GPIO9 (???) */ |
| reg_w(gspca_dev, STK1135_REG_ICTRL + 1, 0x00); |
| reg_w(gspca_dev, STK1135_REG_ICTRL + 3, 0x03); |
| /* enable remote wakeup from GPIO9 (???) */ |
| reg_w(gspca_dev, STK1135_REG_RMCTL + 1, 0x00); |
| reg_w(gspca_dev, STK1135_REG_RMCTL + 3, 0x02); |
| |
| /* reset serial interface */ |
| reg_w(gspca_dev, STK1135_REG_SICTL, 0x80); |
| reg_w(gspca_dev, STK1135_REG_SICTL, 0x00); |
| /* set sensor address */ |
| reg_w(gspca_dev, STK1135_REG_SICTL + 3, 0xba); |
| /* disable alt 2-wire serial interface */ |
| reg_w(gspca_dev, STK1135_REG_ASIC + 3, 0x00); |
| |
| stk1135_configure_clock(gspca_dev); |
| |
| /* read sensor ID */ |
| sd->sensor_page = 0xff; |
| sensor_id = sensor_read(gspca_dev, 0x000); |
| |
| switch (sensor_id) { |
| case 0x148c: |
| sensor_name = "MT9M112"; |
| break; |
| default: |
| sensor_name = "unknown"; |
| } |
| pr_info("Detected sensor type %s (0x%x)\n", sensor_name, sensor_id); |
| |
| stk1135_camera_disable(gspca_dev); |
| |
| return gspca_dev->usb_err; |
| } |
| |
| /* -- start the camera -- */ |
| static int sd_start(struct gspca_dev *gspca_dev) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| u16 width, height; |
| |
| /* enable sensor (GPIO5) */ |
| reg_w(gspca_dev, STK1135_REG_GCTRL, (1 << 5)); |
| |
| stk1135_configure_clock(gspca_dev); |
| |
| /* set capture start position X = 0, Y = 0 */ |
| reg_w(gspca_dev, STK1135_REG_CISPO + 0, 0x00); |
| reg_w(gspca_dev, STK1135_REG_CISPO + 1, 0x00); |
| reg_w(gspca_dev, STK1135_REG_CISPO + 2, 0x00); |
| reg_w(gspca_dev, STK1135_REG_CISPO + 3, 0x00); |
| |
| /* set capture end position */ |
| width = gspca_dev->pixfmt.width; |
| height = gspca_dev->pixfmt.height; |
| reg_w(gspca_dev, STK1135_REG_CIEPO + 0, width & 0xff); |
| reg_w(gspca_dev, STK1135_REG_CIEPO + 1, width >> 8); |
| reg_w(gspca_dev, STK1135_REG_CIEPO + 2, height & 0xff); |
| reg_w(gspca_dev, STK1135_REG_CIEPO + 3, height >> 8); |
| |
| /* set 8-bit mode */ |
| reg_w(gspca_dev, STK1135_REG_SCTRL, 0x20); |
| |
| stk1135_configure_mt9m112(gspca_dev); |
| |
| /* enable capture */ |
| reg_w_mask(gspca_dev, STK1135_REG_SCTRL, 0x80, 0x80); |
| |
| if (gspca_dev->usb_err >= 0) |
| PDEBUG(D_STREAM, "camera started alt: 0x%02x", |
| gspca_dev->alt); |
| |
| sd->pkt_seq = 0; |
| |
| return gspca_dev->usb_err; |
| } |
| |
| static void sd_stopN(struct gspca_dev *gspca_dev) |
| { |
| struct usb_device *dev = gspca_dev->dev; |
| |
| usb_set_interface(dev, gspca_dev->iface, 0); |
| |
| stk1135_camera_disable(gspca_dev); |
| |
| PDEBUG(D_STREAM, "camera stopped"); |
| } |
| |
| static void sd_pkt_scan(struct gspca_dev *gspca_dev, |
| u8 *data, /* isoc packet */ |
| int len) /* iso packet length */ |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| int skip = sizeof(struct stk1135_pkt_header); |
| bool flip; |
| enum gspca_packet_type pkt_type = INTER_PACKET; |
| struct stk1135_pkt_header *hdr = (void *)data; |
| u8 seq; |
| |
| if (len < 4) { |
| PDEBUG(D_PACK, "received short packet (less than 4 bytes)"); |
| return; |
| } |
| |
| /* GPIO 8 is flip sensor (1 = normal position, 0 = flipped to back) */ |
| flip = !(le16_to_cpu(hdr->gpio) & (1 << 8)); |
| /* it's a switch, needs software debounce */ |
| if (sd->flip_status != flip) |
| sd->flip_debounce++; |
| else |
| sd->flip_debounce = 0; |
| |
| /* check sequence number (not present in new frame packets) */ |
| if (!(hdr->flags & STK1135_HDR_FRAME_START)) { |
| seq = hdr->seq & STK1135_HDR_SEQ_MASK; |
| if (seq != sd->pkt_seq) { |
| PDEBUG(D_PACK, "received out-of-sequence packet"); |
| /* resync sequence and discard packet */ |
| sd->pkt_seq = seq; |
| gspca_dev->last_packet_type = DISCARD_PACKET; |
| return; |
| } |
| } |
| sd->pkt_seq++; |
| if (sd->pkt_seq > STK1135_HDR_SEQ_MASK) |
| sd->pkt_seq = 0; |
| |
| if (len == sizeof(struct stk1135_pkt_header)) |
| return; |
| |
| if (hdr->flags & STK1135_HDR_FRAME_START) { /* new frame */ |
| skip = 8; /* the header is longer */ |
| gspca_frame_add(gspca_dev, LAST_PACKET, data, 0); |
| pkt_type = FIRST_PACKET; |
| } |
| gspca_frame_add(gspca_dev, pkt_type, data + skip, len - skip); |
| } |
| |
| static void sethflip(struct gspca_dev *gspca_dev, s32 val) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| if (sd->flip_status) |
| val = !val; |
| sensor_write_mask(gspca_dev, 0x020, val ? 0x0002 : 0x0000 , 0x0002); |
| } |
| |
| static void setvflip(struct gspca_dev *gspca_dev, s32 val) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| if (sd->flip_status) |
| val = !val; |
| sensor_write_mask(gspca_dev, 0x020, val ? 0x0001 : 0x0000 , 0x0001); |
| } |
| |
| static void stk1135_dq_callback(struct gspca_dev *gspca_dev) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| |
| if (sd->flip_debounce > 100) { |
| sd->flip_status = !sd->flip_status; |
| sethflip(gspca_dev, v4l2_ctrl_g_ctrl(sd->hflip)); |
| setvflip(gspca_dev, v4l2_ctrl_g_ctrl(sd->vflip)); |
| } |
| } |
| |
| static int sd_s_ctrl(struct v4l2_ctrl *ctrl) |
| { |
| struct gspca_dev *gspca_dev = |
| container_of(ctrl->handler, struct gspca_dev, ctrl_handler); |
| |
| gspca_dev->usb_err = 0; |
| |
| if (!gspca_dev->streaming) |
| return 0; |
| |
| switch (ctrl->id) { |
| case V4L2_CID_HFLIP: |
| sethflip(gspca_dev, ctrl->val); |
| break; |
| case V4L2_CID_VFLIP: |
| setvflip(gspca_dev, ctrl->val); |
| break; |
| } |
| |
| return gspca_dev->usb_err; |
| } |
| |
| static const struct v4l2_ctrl_ops sd_ctrl_ops = { |
| .s_ctrl = sd_s_ctrl, |
| }; |
| |
| static int sd_init_controls(struct gspca_dev *gspca_dev) |
| { |
| struct sd *sd = (struct sd *) gspca_dev; |
| struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler; |
| |
| gspca_dev->vdev.ctrl_handler = hdl; |
| v4l2_ctrl_handler_init(hdl, 2); |
| sd->hflip = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, |
| V4L2_CID_HFLIP, 0, 1, 1, 0); |
| sd->vflip = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops, |
| V4L2_CID_VFLIP, 0, 1, 1, 0); |
| |
| if (hdl->error) { |
| pr_err("Could not initialize controls\n"); |
| return hdl->error; |
| } |
| return 0; |
| } |
| |
| static void stk1135_try_fmt(struct gspca_dev *gspca_dev, struct v4l2_format *fmt) |
| { |
| fmt->fmt.pix.width = clamp(fmt->fmt.pix.width, 32U, 1280U); |
| fmt->fmt.pix.height = clamp(fmt->fmt.pix.height, 32U, 1024U); |
| /* round up to even numbers */ |
| fmt->fmt.pix.width += (fmt->fmt.pix.width & 1); |
| fmt->fmt.pix.height += (fmt->fmt.pix.height & 1); |
| |
| fmt->fmt.pix.bytesperline = fmt->fmt.pix.width; |
| fmt->fmt.pix.sizeimage = fmt->fmt.pix.width * fmt->fmt.pix.height; |
| } |
| |
| static int stk1135_enum_framesizes(struct gspca_dev *gspca_dev, |
| struct v4l2_frmsizeenum *fsize) |
| { |
| if (fsize->index != 0 || fsize->pixel_format != V4L2_PIX_FMT_SBGGR8) |
| return -EINVAL; |
| |
| fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE; |
| fsize->stepwise.min_width = 32; |
| fsize->stepwise.min_height = 32; |
| fsize->stepwise.max_width = 1280; |
| fsize->stepwise.max_height = 1024; |
| fsize->stepwise.step_width = 2; |
| fsize->stepwise.step_height = 2; |
| |
| return 0; |
| } |
| |
| /* sub-driver description */ |
| static const struct sd_desc sd_desc = { |
| .name = MODULE_NAME, |
| .config = sd_config, |
| .init = sd_init, |
| .init_controls = sd_init_controls, |
| .start = sd_start, |
| .stopN = sd_stopN, |
| .pkt_scan = sd_pkt_scan, |
| .dq_callback = stk1135_dq_callback, |
| .try_fmt = stk1135_try_fmt, |
| .enum_framesizes = stk1135_enum_framesizes, |
| }; |
| |
| /* -- module initialisation -- */ |
| static const struct usb_device_id device_table[] = { |
| {USB_DEVICE(0x174f, 0x6a31)}, /* ASUS laptop, MT9M112 sensor */ |
| {} |
| }; |
| MODULE_DEVICE_TABLE(usb, device_table); |
| |
| /* -- device connect -- */ |
| static int sd_probe(struct usb_interface *intf, |
| const struct usb_device_id *id) |
| { |
| return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd), |
| THIS_MODULE); |
| } |
| |
| static struct usb_driver sd_driver = { |
| .name = MODULE_NAME, |
| .id_table = device_table, |
| .probe = sd_probe, |
| .disconnect = gspca_disconnect, |
| #ifdef CONFIG_PM |
| .suspend = gspca_suspend, |
| .resume = gspca_resume, |
| .reset_resume = gspca_resume, |
| #endif |
| }; |
| |
| module_usb_driver(sd_driver); |