From: Sakari Ailus <sakari.ai...@iki.fi>
Configure CSI-2 phy based on platform data in the ISP driver rather than in
platform code.
Signed-off-by: Sakari Ailus <sakari.ai...@iki.fi>
---
drivers/media/video/omap3isp/isp.c | 38 ++++++++++++--
drivers/media/video/omap3isp/isp.h | 3 -
drivers/media/video/omap3isp/ispcsiphy.c | 83 ++++++++++++++++++++++++++----
drivers/media/video/omap3isp/ispcsiphy.h | 4 ++
4 files changed, 111 insertions(+), 17 deletions(-)
diff --git a/drivers/media/video/omap3isp/isp.c
b/drivers/media/video/omap3isp/isp.c
index b818cac..6020fd7 100644
--- a/drivers/media/video/omap3isp/isp.c
+++ b/drivers/media/video/omap3isp/isp.c
@@ -737,7 +737,7 @@ static int isp_pipeline_enable(struct isp_pipeline *pipe,
struct isp_device *isp = pipe->output->isp;
struct media_entity *entity;
struct media_pad *pad;
- struct v4l2_subdev *subdev;
+ struct v4l2_subdev *subdev = NULL, *prev_subdev;
unsigned long flags;
int ret;
@@ -759,11 +759,41 @@ static int isp_pipeline_enable(struct isp_pipeline *pipe,
break;
entity = pad->entity;
+ prev_subdev = subdev;
subdev = media_entity_to_v4l2_subdev(entity);
- ret = v4l2_subdev_call(subdev, video, s_stream, mode);
- if (ret < 0 && ret != -ENOIOCTLCMD)
- return ret;
+ /* Configure CSI-2 receiver based on sensor format. */
+ if (prev_subdev == &isp->isp_csi2a.subdev
+ || prev_subdev == &isp->isp_csi2c.subdev) {
+ struct v4l2_subdev_format fmt;
+
+ fmt.pad = pad->index;
+ fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
+ ret = v4l2_subdev_call(subdev, pad, get_fmt,
+ NULL, &fmt);
+ if (ret < 0)
+ return -EPIPE;
+
+ ret = omap3isp_csiphy_config(
+ isp, prev_subdev, subdev,
+ &fmt.format);
+ if (ret < 0)
+ return -EPIPE;
+
+ /* Start CSI-2 after configuration. */
+ ret = v4l2_subdev_call(prev_subdev, video,
+ s_stream, mode);
+ if (ret < 0 && ret != -ENOIOCTLCMD)
+ return ret;
+ }
+
+ /* Start any other subdev except the CSI-2 receivers. */
+ if (subdev != &isp->isp_csi2a.subdev
+ && subdev != &isp->isp_csi2c.subdev) {
+ ret = v4l2_subdev_call(subdev, video, s_stream, mode);
+ if (ret < 0 && ret != -ENOIOCTLCMD)
+ return ret;
+ }
if (subdev == &isp->isp_ccdc.subdev) {
v4l2_subdev_call(&isp->isp_aewb.subdev, video,
diff --git a/drivers/media/video/omap3isp/isp.h
b/drivers/media/video/omap3isp/isp.h
index 705946e..c5935ae 100644
--- a/drivers/media/video/omap3isp/isp.h
+++ b/drivers/media/video/omap3isp/isp.h
@@ -126,9 +126,6 @@ struct isp_reg {
struct isp_platform_callback {
u32 (*set_xclk)(struct isp_device *isp, u32 xclk, u8 xclksel);
- int (*csiphy_config)(struct isp_csiphy *phy,
- struct isp_csiphy_dphy_cfg *dphy,
- struct isp_csiphy_lanes_cfg *lanes);
void (*set_pixel_clock)(struct isp_device *isp, unsigned int pixelclk);
};
diff --git a/drivers/media/video/omap3isp/ispcsiphy.c
b/drivers/media/video/omap3isp/ispcsiphy.c
index 5be37ce..f027ece 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 +140,78 @@ 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 v4l2_subdev *sensor,
+ struct v4l2_mbus_framefmt *sensor_fmt)
{
+ struct isp_v4l2_subdevs_group *subdevs = sensor->host_priv;
+ struct isp_csi2_device *csi2 = v4l2_get_subdevdata(csi2_subdev);
+ struct isp_csiphy_dphy_cfg csi2phy;
+ int csi2_ddrclk_khz;
+ struct isp_csiphy_lanes_cfg *lanes;
unsigned int used_lanes = 0;
unsigned int i;
+ u32 cam_phy_ctrl;
+
+ if (subdevs->interface == ISP_INTERFACE_CCP2B_PHY1
+ || subdevs->interface == ISP_INTERFACE_CCP2B_PHY2)
+ lanes = subdevs->bus.ccp2.lanecfg;
+ else
+ lanes = subdevs->bus.csi2.lanecfg;
+
+ if (!lanes) {
+ dev_err(isp->dev, "no lane configuration\n");
+ return -EINVAL;
+ }
+
+ 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;
+
+ /* FIXME: Do 34xx / 35xx require something here? */
+ if (cpu_is_omap3630())
+ omap_writel(cam_phy_ctrl,
+ OMAP343X_CTRL_BASE
+ + OMAP3630_CONTROL_CAMERA_PHY_CTRL);
+
+ csi2_ddrclk_khz = sensor_fmt->pixelrate
+ / (2 * csi2->phy->num_data_lanes)
+ * omap3isp_video_format_info(sensor_fmt->code)->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 +227,10 @@ 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 +290,6 @@ 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..9f93222 100644
--- a/drivers/media/video/omap3isp/ispcsiphy.h
+++ b/drivers/media/video/omap3isp/ispcsiphy.h
@@ -56,6 +56,10 @@ struct isp_csiphy {
struct isp_csiphy_dphy_cfg dphy;
};
+int omap3isp_csiphy_config(struct isp_device *isp,
+ struct v4l2_subdev *csi2_subdev,
+ struct v4l2_subdev *sensor,
+ struct v4l2_mbus_framefmt *fmt);
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
--
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