diff options
| author |   Sakari Ailus <sakari.ailus@iki.fi> | 2015-03-25 19:57:32 -0300 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-04-02 16:42:04 -0300 |
| commit | 6387b75284aa7b78c2e947934fb874444ab427e9 (patch) | |
| tree | d54e942201ce1ec6255b334d167551b7149276b1 | |
| parent | [media] omap3isp: Rename regulators to better suit the Device Tree (diff) | |
| download | linux-dev-6387b75284aa7b78c2e947934fb874444ab427e9.tar.xz linux-dev-6387b75284aa7b78c2e947934fb874444ab427e9.zip | |
[media] omap3isp: Calculate vpclk_div for CSI-2
The video port clock is l3_ick divided by vpclk_div. This clock must be high
enough for the external pixel rate. The video port requires two clock cycles
to process a pixel.
Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
| -rw-r--r-- | drivers/media/platform/omap3isp/ispcsi2.c | 8 | ||||
| -rw-r--r-- | include/media/omap3isp.h | 2 |
2 files changed, 7 insertions, 3 deletions
diff --git a/drivers/media/platform/omap3isp/ispcsi2.c b/drivers/media/platform/omap3isp/ispcsi2.c index 45ac90a49889..a78338d012b4 100644 --- a/drivers/media/platform/omap3isp/ispcsi2.c +++ b/drivers/media/platform/omap3isp/ispcsi2.c @@ -548,6 +548,7 @@ int omap3isp_csi2_reset(struct isp_csi2_device *csi2) static int csi2_configure(struct isp_csi2_device *csi2) { + struct isp_pipeline *pipe = to_isp_pipeline(&csi2->subdev.entity); const struct isp_bus_cfg *buscfg; struct isp_device *isp = csi2->isp; struct isp_csi2_timing_cfg *timing = &csi2->timing[0]; @@ -570,7 +571,12 @@ static int csi2_configure(struct isp_csi2_device *csi2) csi2->frame_skip = 0; v4l2_subdev_call(sensor, sensor, g_skip_frames, &csi2->frame_skip); - csi2->ctrl.vp_out_ctrl = buscfg->bus.csi2.vpclk_div; + csi2->ctrl.vp_out_ctrl = + clamp_t(unsigned int, pipe->l3_ick / pipe->external_rate - 1, + 1, 3); + dev_dbg(isp->dev, "%s: l3_ick %lu, external_rate %u, vp_out_ctrl %u\n", + __func__, pipe->l3_ick, pipe->external_rate, + csi2->ctrl.vp_out_ctrl); csi2->ctrl.frame_mode = ISP_CSI2_FRAME_IMMEDIATE; csi2->ctrl.ecc_enable = buscfg->bus.csi2.crc; diff --git a/include/media/omap3isp.h b/include/media/omap3isp.h index 39e0748b0d31..0f0c08b48829 100644 --- a/include/media/omap3isp.h +++ b/include/media/omap3isp.h @@ -129,11 +129,9 @@ struct isp_ccp2_cfg { /** * struct isp_csi2_cfg - CSI2 interface configuration * @crc: Enable the cyclic redundancy check - * @vpclk_div: Video port output clock control */ struct isp_csi2_cfg { unsigned crc:1; - unsigned vpclk_div:2; struct isp_csiphy_lanes_cfg lanecfg; }; |