The platform data is actually not used anywhere (along with the CSI
support) and should be safe to remove.
Signed-off-by: Lubomir Rintel <lkund...@v3.sk>
Acked-by: Pavel Machek <pa...@ucw.cz>
---
Changes since v1:
- s/This are/These are/ in a comment
.../media/platform/marvell-ccic/mmp-driver.c | 36 ++++++++++++++-----
1 file changed, 27 insertions(+), 9 deletions(-)
diff --git a/drivers/media/platform/marvell-ccic/mmp-driver.c
b/drivers/media/platform/marvell-ccic/mmp-driver.c
index 5c61317f56bc..05b9fa8c6a6f 100644
--- a/drivers/media/platform/marvell-ccic/mmp-driver.c
+++ b/drivers/media/platform/marvell-ccic/mmp-driver.c
@@ -19,6 +19,8 @@
#include <media/v4l2-device.h>
#include <linux/platform_data/media/mmp-camera.h>
#include <linux/device.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/io.h>
@@ -196,6 +198,9 @@ static void mmpcam_calc_dphy(struct mcam_camera *mcam)
struct device *dev = &cam->pdev->dev;
unsigned long tx_clk_esc;
+ if (!pdata)
+ return;
+
/*
* If CSI2_DPHY3 is calculated dynamically,
* pdata->lane_clk should be already set
@@ -314,10 +319,6 @@ static int mmpcam_probe(struct platform_device *pdev)
struct mmp_camera_platform_data *pdata;
int ret;
- pdata = pdev->dev.platform_data;
- if (!pdata)
- return -ENODEV;
-
cam = devm_kzalloc(&pdev->dev, sizeof(*cam), GFP_KERNEL);
if (cam == NULL)
return -ENOMEM;
@@ -330,17 +331,29 @@ static int mmpcam_probe(struct platform_device *pdev)
mcam->calc_dphy = mmpcam_calc_dphy;
mcam->dev = &pdev->dev;
mcam->use_smbus = 0;
- mcam->mclk_src = pdata->mclk_src;
- mcam->mclk_div = pdata->mclk_div;
- mcam->bus_type = pdata->bus_type;
- mcam->dphy = pdata->dphy;
+ pdata = pdev->dev.platform_data;
+ if (pdata) {
+ mcam->mclk_src = pdata->mclk_src;
+ mcam->mclk_div = pdata->mclk_div;
+ mcam->bus_type = pdata->bus_type;
+ mcam->dphy = pdata->dphy;
+ mcam->lane = pdata->lane;
+ } else {
+ /*
+ * These are values that used to be hardcoded in mcam-core and
+ * work well on a OLPC XO 1.75 with a parallel bus sensor.
+ * If it turns out other setups make sense, the values should
+ * be obtained from the device tree.
+ */
+ mcam->mclk_src = 3;
+ mcam->mclk_div = 2;
+ }
if (mcam->bus_type == V4L2_MBUS_CSI2_DPHY) {
cam->mipi_clk = devm_clk_get(mcam->dev, "mipi");
if ((IS_ERR(cam->mipi_clk) && mcam->dphy[2] == 0))
return PTR_ERR(cam->mipi_clk);
}
mcam->mipi_enabled = false;
- mcam->lane = pdata->lane;
mcam->chip_id = MCAM_ARMADA610;
mcam->buffer_mode = B_DMA_sg;
strscpy(mcam->bus_info, "platform:mmp-camera", sizeof(mcam->bus_info));
@@ -475,6 +488,10 @@ static int mmpcam_resume(struct platform_device *pdev)
#endif
+static const struct of_device_id mmpcam_of_match[] = {
+ { .compatible = "marvell,mmp2-ccic", },
+ {},
+};
static struct platform_driver mmpcam_driver = {
.probe = mmpcam_probe,
@@ -485,6 +502,7 @@ static struct platform_driver mmpcam_driver = {
#endif
.driver = {
.name = "mmp-camera",
+ .of_match_table = of_match_ptr(mmpcam_of_match),
}
};
--
2.19.1
