Configure CSI-2 phy based on platform data in the ISP driver. For that, the
new V4L2_CID_IMAGE_SOURCE_PIXEL_RATE control is used. Previously the same
was configured from the board code.
Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxx>
---
drivers/media/video/omap3isp/ispcsi2.c | 10 +++-
drivers/media/video/omap3isp/ispcsiphy.c | 78 ++++++++++++++++++++++++++----
drivers/media/video/omap3isp/ispcsiphy.h | 2 +
3 files changed, 78 insertions(+), 12 deletions(-)
diff --git a/drivers/media/video/omap3isp/ispcsi2.c b/drivers/media/video/omap3isp/ispcsi2.c
index 9313f7c..e2e3d63 100644
--- a/drivers/media/video/omap3isp/ispcsi2.c
+++ b/drivers/media/video/omap3isp/ispcsi2.c
@@ -1068,7 +1068,13 @@ static int csi2_set_stream(struct v4l2_subdev *sd, int enable)
struct isp_video *video_out = &csi2->video_out;
switch (enable) {
- case ISP_PIPELINE_STREAM_CONTINUOUS:
+ case ISP_PIPELINE_STREAM_CONTINUOUS: {
+ int ret;
+
+ ret = omap3isp_csiphy_config(isp, sd);
+ if (ret < 0)
+ return ret;
+
if (omap3isp_csiphy_acquire(csi2->phy) < 0)
return -ENODEV;
csi2->use_fs_irq = pipe->do_propagation;
@@ -1092,7 +1098,7 @@ static int csi2_set_stream(struct v4l2_subdev *sd, int enable)
csi2_if_enable(isp, csi2, 1);
isp_video_dmaqueue_flags_clr(video_out);
break;
-
+ }
case ISP_PIPELINE_STREAM_STOPPED:
if (csi2->state == ISP_PIPELINE_STREAM_STOPPED)
return 0;
diff --git a/drivers/media/video/omap3isp/ispcsiphy.c b/drivers/media/video/omap3isp/ispcsiphy.c
index 5be37ce..5d7a6ab 100644
--- a/drivers/media/video/omap3isp/ispcsiphy.c
+++ b/drivers/media/video/omap3isp/ispcsiphy.c
@@ -28,6 +28,8 @@
#include <linux/device.h>
#include <linux/regulator/consumer.h>
+#include "../../../../arch/arm/mach-omap2/control.h"
+
#include "isp.h"
#include "ispreg.h"
#include "ispcsiphy.h"
@@ -138,15 +140,73 @@ static void csiphy_dphy_config(struct isp_csiphy *phy)
isp_reg_writel(phy->isp, reg, phy->phy_regs, ISPCSIPHY_REG1);
}
-static int csiphy_config(struct isp_csiphy *phy,
- struct isp_csiphy_dphy_cfg *dphy,
- struct isp_csiphy_lanes_cfg *lanes)
+/*
+ * TCLK values are OK at their reset values
+ */
+#define TCLK_TERM 0
+#define TCLK_MISS 1
+#define TCLK_SETTLE 14
+
+int omap3isp_csiphy_config(struct isp_device *isp,
+ struct v4l2_subdev *csi2_subdev)
{
+ struct isp_csi2_device *csi2 = v4l2_get_subdevdata(csi2_subdev);
+ struct isp_pipeline *pipe = to_isp_pipeline(&csi2_subdev->entity);
+ struct isp_v4l2_subdevs_group *subdevs = pipe->external->host_priv;
+ struct isp_csiphy_dphy_cfg csi2phy;
+ int csi2_ddrclk_khz;
+ struct isp_csiphy_lanes_cfg *lanes;
unsigned int used_lanes = 0;
unsigned int i;
+ if (subdevs->interface == ISP_INTERFACE_CCP2B_PHY1
+ || subdevs->interface == ISP_INTERFACE_CCP2B_PHY2)
+ lanes = &subdevs->bus.ccp2.lanecfg;
+ else
+ lanes = &subdevs->bus.csi2.lanecfg;
+
+ /* FIXME: Do 34xx / 35xx require something here? */
+ if (cpu_is_omap3630()) {
+ u32 cam_phy_ctrl = omap_readl(
+ OMAP343X_CTRL_BASE + OMAP3630_CONTROL_CAMERA_PHY_CTRL);
+
+ /*
+ * SCM.CONTROL_CAMERA_PHY_CTRL
+ * - bit[4] : CSIPHY1 data sent to CSIB
+ * - bit [3:2] : CSIPHY1 config: 00 d-phy, 01/10 ccp2
+ * - bit [1:0] : CSIPHY2 config: 00 d-phy, 01/10 ccp2
+ */
+ if (subdevs->interface == ISP_INTERFACE_CCP2B_PHY1)
+ cam_phy_ctrl |= 1 << 2;
+ else if (subdevs->interface == ISP_INTERFACE_CSI2C_PHY1)
+ cam_phy_ctrl &= 1 << 2;
+
+ if (subdevs->interface == ISP_INTERFACE_CCP2B_PHY2)
+ cam_phy_ctrl |= 1;
+ else if (subdevs->interface == ISP_INTERFACE_CSI2A_PHY2)
+ cam_phy_ctrl &= 1;
+
+ omap_writel(cam_phy_ctrl,
+ OMAP343X_CTRL_BASE
+ + OMAP3630_CONTROL_CAMERA_PHY_CTRL);
+ }
+
+ csi2_ddrclk_khz = pipe->external_rate / 1000
+ / (2 * csi2->phy->num_data_lanes)
+ * pipe->external_bpp;
+
+ /*
+ * THS_TERM: Programmed value = ceil(12.5 ns/DDRClk period) - 1.
+ * THS_SETTLE: Programmed value = ceil(90 ns/DDRClk period) + 3.
+ */
+ csi2phy.ths_term = DIV_ROUND_UP(25 * csi2_ddrclk_khz, 2000000) - 1;
+ csi2phy.ths_settle = DIV_ROUND_UP(90 * csi2_ddrclk_khz, 1000000) + 3;
+ csi2phy.tclk_term = TCLK_TERM;
+ csi2phy.tclk_miss = TCLK_MISS;
+ csi2phy.tclk_settle = TCLK_SETTLE;
+
/* Clock and data lanes verification */
- for (i = 0; i < phy->num_data_lanes; i++) {
+ for (i = 0; i < csi2->phy->num_data_lanes; i++) {
if (lanes->data[i].pol > 1 || lanes->data[i].pos > 3)
return -EINVAL;
@@ -162,10 +222,10 @@ static int csiphy_config(struct isp_csiphy *phy,
if (lanes->clk.pos == 0 || used_lanes & (1 << lanes->clk.pos))
return -EINVAL;
- mutex_lock(&phy->mutex);
- phy->dphy = *dphy;
- phy->lanes = *lanes;
- mutex_unlock(&phy->mutex);
+ mutex_lock(&csi2->phy->mutex);
+ csi2->phy->dphy = csi2phy;
+ csi2->phy->lanes = *lanes;
+ mutex_unlock(&csi2->phy->mutex);
return 0;
}
@@ -225,8 +285,6 @@ int omap3isp_csiphy_init(struct isp_device *isp)
struct isp_csiphy *phy1 = &isp->isp_csiphy1;
struct isp_csiphy *phy2 = &isp->isp_csiphy2;
- isp->platform_cb.csiphy_config = csiphy_config;
-
phy2->isp = isp;
phy2->csi2 = &isp->isp_csi2a;
phy2->num_data_lanes = ISP_CSIPHY2_NUM_DATA_LANES;
diff --git a/drivers/media/video/omap3isp/ispcsiphy.h b/drivers/media/video/omap3isp/ispcsiphy.h
index e93a661..a404b10 100644
--- a/drivers/media/video/omap3isp/ispcsiphy.h
+++ b/drivers/media/video/omap3isp/ispcsiphy.h
@@ -56,6 +56,8 @@ struct isp_csiphy {
struct isp_csiphy_dphy_cfg dphy;
};
+int omap3isp_csiphy_config(struct isp_device *isp,
+ struct v4l2_subdev *csi2_subdev);
int omap3isp_csiphy_acquire(struct isp_csiphy *phy);
void omap3isp_csiphy_release(struct isp_csiphy *phy);
int omap3isp_csiphy_init(struct isp_device *isp);
--
1.7.2.5
--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
