From: Robby Cai <R63905@freescale.com>
Date: Thu, 14 Mar 2013 08:51:00 +0000 (+0800)
Subject: ENGR00252064-2 mx6sl: ov5640: need enable MCLK before read sensor ID
X-Git-Tag: v3.0.35-fsl~64
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=417038ba11b4cb1a0f780aaeebf63a2dc9ad3cc2;p=karo-tx-linux.git

ENGR00252064-2 mx6sl: ov5640: need enable MCLK before read sensor ID

After the patch of auto-detection for sensor pushed, there's a need to
read sensor ID in probe function. But on MX6SL, MCLK is not enabled at
that time. So need to enable it before read sensor ID.

Signed-off-by: Robby Cai <R63905@freescale.com>
---

diff --git a/drivers/media/video/mxc/capture/ov5640.c b/drivers/media/video/mxc/capture/ov5640.c
index 2a1bc983e28e..3195377152b7 100644
--- a/drivers/media/video/mxc/capture/ov5640.c
+++ b/drivers/media/video/mxc/capture/ov5640.c
@@ -31,6 +31,7 @@
 #include <media/v4l2-chip-ident.h>
 #include <media/v4l2-int-device.h>
 #include "mxc_v4l2_capture.h"
+#include "fsl_csi.h"
 
 #define OV5640_VOLTAGE_ANALOG               2800000
 #define OV5640_VOLTAGE_DIGITAL_CORE         1500000
@@ -1821,6 +1822,8 @@ static int ov5640_probe(struct i2c_client *client,
 	if (plat_data->pwdn)
 		plat_data->pwdn(0);
 
+	if (cpu_is_mx6sl())
+		csi_enable_mclk(CSI_MCLK_I2C, true, true);
 	retval = ov5640_read_reg(OV5640_CHIP_ID_HIGH_BYTE, &chip_id_high);
 	if (retval < 0 || chip_id_high != 0x56) {
 		pr_warning("camera ov5640 is not found\n");
@@ -1837,6 +1840,9 @@ static int ov5640_probe(struct i2c_client *client,
 	if (plat_data->pwdn)
 		plat_data->pwdn(1);
 
+	if (cpu_is_mx6sl())
+		csi_enable_mclk(CSI_MCLK_I2C, false, false);
+
 	camera_plat = plat_data;
 
 	ov5640_int_device.priv = &ov5640_data;