we use ov3640 interfaced with omap3530 8bit interface in devkit 1.0 ,I find that there is the driver for OV3640 in \drivers\media\video\ov36340.c and arch\arm\mach-omap2\board-ldp-camera.c, I have port board-ldp-camera.c to my platform. I can get chip ID from OV3640 , I think the isp driver and OV3640 driver is developed for RAW 10bit interface, how do I modify it to support V4L2_PIX_FMT_UYVY (YUV 4:2:2)?
#define LDPCAM_USE_XCLKB 1
#define VAUX_1_8_V 0x05#define VAUX_DEV_GRP_P1 0x20#define VAUX_DEV_GRP_NONE 0x00
#if defined(CONFIG_VIDEO_OV3640) || defined(CONFIG_VIDEO_OV3640_MODULE)#define OV3640_RESET_GPIO 98#define OV3640_STANDBY_GPIO 7#include <media/ov3640.h>#include <../drivers/media/video/isp/ispcsi2.h>#define OV3640_CSI2_CLOCK_POLARITY 0 /* +/- pin order */#define OV3640_CSI2_DATA0_POLARITY 0 /* +/- pin order */#define OV3640_CSI2_DATA1_POLARITY 0 /* +/- pin order */#define OV3640_CSI2_CLOCK_LANE 1 /* Clock lane position: 1 */#define OV3640_CSI2_DATA0_LANE 2 /* Data0 lane position: 2 */#define OV3640_CSI2_DATA1_LANE 3 /* Data1 lane position: 3 */#define OV3640_CSI2_PHY_THS_TERM 4#define OV3640_CSI2_PHY_THS_SETTLE 14#define OV3640_CSI2_PHY_TCLK_TERM 0#define OV3640_CSI2_PHY_TCLK_MISS 1#define OV3640_CSI2_PHY_TCLK_SETTLE 14
#define OV3640_BIGGEST_FRAME_BYTE_SIZE PAGE_ALIGN(2048 * 1536 * 2)
static struct omap34xxcam_sensor_config ov3640_hwc = { .sensor_isp = 0, .capture_mem = OV3640_BIGGEST_FRAME_BYTE_SIZE * 2, .ival_default = { 1, 15 },};
static struct isp_interface_config ov3640_if_config = { .ccdc_par_ser = ISP_CSIA, .dataline_shift = 0x0, .hsvs_syncdetect = ISPCTRL_SYNC_DETECT_VSRISE, .strobe = 0x0, .prestrobe = 0x0, .shutter = 0x0, .prev_sph = 2, .prev_slv = 1, .wenlog = ISPCCDC_CFG_WENLOG_AND, .wait_hs_vs = 2, .u.csi.crc = 0x0, .u.csi.mode = 0x0, .u.csi.edge = 0x0, .u.csi.signalling = 0x0, .u.csi.strobe_clock_inv = 0x0, .u.csi.vs_edge = 0x0, .u.csi.channel = 0x1, .u.csi.vpclk = 0x1, .u.csi.data_start = 0x0, .u.csi.data_size = 0x0, .u.csi.format = V4L2_PIX_FMT_SGRBG10,};
static int ov3640_sensor_set_prv_data(struct v4l2_int_device *s, void *priv){ struct omap34xxcam_hw_config *hwc = priv;
hwc->u.sensor.sensor_isp = ov3640_hwc.sensor_isp; hwc->dev_index = 1; hwc->dev_minor = 4; hwc->dev_type = OMAP34XXCAM_SLAVE_SENSOR; return 0;}
static int ov3640_sensor_power_set(struct v4l2_int_device *s, enum v4l2_power power){ struct omap34xxcam_videodev *vdev = s->u.slave->master->priv; struct isp_csi2_lanes_cfg lanecfg; struct isp_csi2_phy_cfg phyconfig; static enum v4l2_power previous_power = V4L2_POWER_OFF;
if (!cam_inited) { printk(KERN_ERR "OV3640: Unable to control board GPIOs!\n"); return -EFAULT; }
switch (power) { case V4L2_POWER_ON: if (previous_power == V4L2_POWER_OFF) isp_csi2_reset(); lanecfg.clk.pol = OV3640_CSI2_CLOCK_POLARITY; lanecfg.clk.pos = OV3640_CSI2_CLOCK_LANE; lanecfg.data[0].pol = OV3640_CSI2_DATA0_POLARITY; lanecfg.data[0].pos = OV3640_CSI2_DATA0_LANE; lanecfg.data[1].pol = OV3640_CSI2_DATA1_POLARITY; lanecfg.data[1].pos = OV3640_CSI2_DATA1_LANE; lanecfg.data[2].pol = 0; lanecfg.data[2].pos = 0; lanecfg.data[3].pol = 0; lanecfg.data[3].pos = 0; isp_csi2_complexio_lanes_config(&lanecfg); isp_csi2_complexio_lanes_update(true);
phyconfig.ths_term = OV3640_CSI2_PHY_THS_TERM; phyconfig.ths_settle = OV3640_CSI2_PHY_THS_SETTLE; phyconfig.tclk_term = OV3640_CSI2_PHY_TCLK_TERM; phyconfig.tclk_miss = OV3640_CSI2_PHY_TCLK_MISS; phyconfig.tclk_settle = OV3640_CSI2_PHY_TCLK_SETTLE; isp_csi2_phy_config(&phyconfig); isp_csi2_phy_update(true);
isp_configure_interface(vdev->cam->isp, &ov3640_if_config);
if (previous_power == V4L2_POWER_OFF) { /* turn on analog power */ twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, VAUX_1_8_V, TWL4030_VAUX4_DEDICATED); twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, VAUX_DEV_GRP_P1, TWL4030_VAUX4_DEV_GRP); udelay(100); /* Turn ON Omnivision sensor */ gpio_set_value(OV3640_RESET_GPIO, 1); gpio_set_value(OV3640_STANDBY_GPIO, 0); udelay(100);
/* RESET Omnivision sensor */ gpio_set_value(OV3640_RESET_GPIO, 0); udelay(100); gpio_set_value(OV3640_RESET_GPIO, 1); } break; case V4L2_POWER_OFF: /* Power Down Sequence */ isp_csi2_complexio_power(ISP_CSI2_POWER_OFF); twl4030_i2c_write_u8(TWL4030_MODULE_PM_RECEIVER, VAUX_DEV_GRP_NONE, TWL4030_VAUX4_DEV_GRP); break; case V4L2_POWER_STANDBY: break; } previous_power = power; return 0;}
Every guide or hint will be helpful! Regards,
Regards,
mike