From: libm1 <libm1@lenovo.com>
Date: Fri, 1 Mar 2019 08:51:53 +0000 (+0800)
Subject: [COMMON] fimc-is2: fix ois bu24218 read ois cal data permission issue
X-Git-Tag: MMI-QSAS30.62-33-3~794
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=7d1e37eb479ae2f7190a0ab7cf6834caf4cead46;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git

[COMMON] fimc-is2: fix ois bu24218 read ois cal data permission issue

Since SELinux enable, kernel OIS driver can`t read eeprom bin file
in userspace filesystem, which lead to OIS always load default cal data.
The solution is to pass the eeprom device node to OIS driver, then
OIS cal data in eeprom data can be parse directly.

Change-Id: Ic61ae2c4abc0c88342383f49df35a1bc48719f7e
Signed-off-by: libm1 <libm1@lenovo.com>
---

diff --git a/drivers/media/platform/exynos/fimc-is2/sensor/module_framework/fimc-is-device-sensor-peri.c b/drivers/media/platform/exynos/fimc-is2/sensor/module_framework/fimc-is-device-sensor-peri.c
index ee15ba67db93..b269b8b0e6e8 100755
--- a/drivers/media/platform/exynos/fimc-is2/sensor/module_framework/fimc-is-device-sensor-peri.c
+++ b/drivers/media/platform/exynos/fimc-is2/sensor/module_framework/fimc-is-device-sensor-peri.c
@@ -927,7 +927,11 @@ void fimc_is_sensor_ois_init_work(struct work_struct *data)
 
 	if (sensor_peri->subdev_ois) {
 #ifdef CONFIG_OIS_DIRECT_FW_CONTROL
+#ifdef CONFIG_CAMERA_OIS_BU24218GWL_OBJ
+	ret = CALL_OISOPS(ois, ois_fw_update, sensor_peri->subdev_ois , sensor_peri->subdev_eeprom);
+#else
 	ret = CALL_OISOPS(ois, ois_fw_update, sensor_peri->subdev_ois);
+#endif
 	if (ret < 0)
 		err("v4l2_subdev_call(ois_init) is fail(%d)", ret);
 #endif
diff --git a/drivers/media/platform/exynos/fimc-is2/sensor/module_framework/fimc-is-interface-sensor.h b/drivers/media/platform/exynos/fimc-is2/sensor/module_framework/fimc-is-interface-sensor.h
index 2b0a77163e11..9cb890392ccc 100755
--- a/drivers/media/platform/exynos/fimc-is2/sensor/module_framework/fimc-is-interface-sensor.h
+++ b/drivers/media/platform/exynos/fimc-is2/sensor/module_framework/fimc-is-interface-sensor.h
@@ -666,7 +666,11 @@ struct fimc_is_ois_ops {
 	int (*ois_set_mode)(struct v4l2_subdev *subdev, int mode);
 	int (*ois_shift_compensation)(struct v4l2_subdev *subdev, int position, int resolution);
 #ifdef CONFIG_OIS_DIRECT_FW_CONTROL
+#ifdef CONFIG_CAMERA_OIS_BU24218GWL_OBJ
+	int (*ois_fw_update)(struct v4l2_subdev *subdev, struct v4l2_subdev *eeprom_subdev);
+#else
 	int (*ois_fw_update)(struct v4l2_subdev *subdev);
+#endif
 #else
 	void (*ois_fw_update)(struct fimc_is_core *core);
 #endif
diff --git a/drivers/media/platform/exynos/fimc-is2/sensor/module_framework/modules/fimc-is-device-module-base.c b/drivers/media/platform/exynos/fimc-is2/sensor/module_framework/modules/fimc-is-device-module-base.c
index 0a2dea068eb7..5df91cea5aaf 100644
--- a/drivers/media/platform/exynos/fimc-is2/sensor/module_framework/modules/fimc-is-device-module-base.c
+++ b/drivers/media/platform/exynos/fimc-is2/sensor/module_framework/modules/fimc-is-device-module-base.c
@@ -268,7 +268,11 @@ int sensor_module_init(struct v4l2_subdev *subdev, u32 val)
 #else
 #if defined(CONFIG_OIS_DIRECT_FW_CONTROL)
 	if (subdev_ois != NULL) {
+#ifdef CONFIG_CAMERA_OIS_BU24218GWL_OBJ
+		ret = CALL_OISOPS(sensor_peri->ois, ois_fw_update, subdev_ois, subdev_eeprom);
+#else
 		ret = CALL_OISOPS(sensor_peri->ois, ois_fw_update, subdev_ois);
+#endif
 		if (ret < 0) {
 			err("v4l2_subdev_call(ois_fw_update) is fail(%d)", ret);
 			return ret;
diff --git a/drivers/media/platform/exynos/fimc-is2/sensor/module_framework/ois/fimc-is-ois-bu24218gwl.c b/drivers/media/platform/exynos/fimc-is2/sensor/module_framework/ois/fimc-is-ois-bu24218gwl.c
index e48da7794195..3eec422a726f 100644
--- a/drivers/media/platform/exynos/fimc-is2/sensor/module_framework/ois/fimc-is-ois-bu24218gwl.c
+++ b/drivers/media/platform/exynos/fimc-is2/sensor/module_framework/ois/fimc-is-ois-bu24218gwl.c
@@ -26,10 +26,9 @@
 #define OIS_FW_ADDR_2		0x1C00
 #define OIS_FW_CHECK_SUM	0x038B41
 
-#define OIS_CAL_DATA_PATH		"/data/vendor/camera/gm1_eeprom_data.bin"
 #define OIS_CAL_DATA_PATH_DEFAULT	"/vendor/firmware/bu24218_cal_data_default.bin"
-#define OIS_CAL_DATA_CRC_OFFSET	0x1DB0
-#define OIS_CAL_DATA_CRC_SIZE		2
+#define OIS_CAL_DATA_CRC_FST		0x1DB0
+#define OIS_CAL_DATA_CRC_SEC		0x1DB1
 #define OIS_CAL_DATA_OFFSET		0x1DB4
 #define OIS_CAL_DATA_SIZE		0x4C
 #define OIS_CAL_DATA_OFFSET_DEFAULT	0
@@ -110,16 +109,13 @@ int fimc_is_ois_check_crc(char *data, size_t size)
 	return crc16;
 }
 
-int fimc_is_ois_cal_open(struct fimc_is_ois *ois, char *name, int offset,int size, int crc_enable)
+int fimc_is_ois_cal_open(struct fimc_is_ois *ois, char *name, int offset,int size)
 {
 	int ret = 0;
 	long fsize, nread;
 	mm_segment_t old_fs;
 	struct file *fp;
 	u8 *buf = NULL;
-	u16 crc_value = 0;
-	u16 crc16 = 0;
-	int i = 0;
 
 	FIMC_BUG(!ois);
 
@@ -149,18 +145,6 @@ int fimc_is_ois_cal_open(struct fimc_is_ois *ois, char *name, int offset,int siz
 		goto p_err;
 	}
 
-	if (crc_enable) {
-		fp->f_pos = OIS_CAL_DATA_CRC_OFFSET;
-		info("ois f_pos set offset %x", fp->f_pos);
-		nread = vfs_read(fp, (char __user *)buf, OIS_CAL_DATA_CRC_SIZE , &fp->f_pos);
-		if (nread != OIS_CAL_DATA_CRC_SIZE) {
-			err("failed to read ois cal crc data from file, (%ld) Bytes", nread);
-			ret = -EIO;
-			goto p_err;
-		}
-		crc_value = ((buf[0] << 8) | (buf[1]));
-	}
-
 	fp->f_pos = offset;
 	info("ois f_pos set offset %x", fp->f_pos);
 	nread = vfs_read(fp, (char __user *)buf, size , &fp->f_pos);
@@ -170,38 +154,11 @@ int fimc_is_ois_cal_open(struct fimc_is_ois *ois, char *name, int offset,int siz
 		goto p_err;
 	}
 
-	for(i = 0; i < size/4; i++) {
-		info("ois cal data (%d): 0x%0x,%0x,%0x,%0x", i, buf[4*i+0], buf[4*i+1], buf[4*i+2], buf[4*i+3]);
-	}
-
-	if (crc_enable) {
-		crc16 = fimc_is_ois_check_crc(buf, OIS_CAL_DATA_SIZE);
-		if (crc_value != crc16) {
-			err("Error to OIS CRC16: 0x%x, cal_buffer CRC: 0x%x", crc16, crc_value);
-			ret = -EIO;
-			goto p_err;
-		}
-		else {
-			info("OIS CRC16: 0x%x, cal_buffer CRC: 0x%x\n", crc16, crc_value);
-		}
-	}
 	/* Cal data save */
 	memcpy(ois_cal_data, (void *)buf, OIS_CAL_ACTUAL_DL_SIZE);
 	ois_cal_data_size = OIS_CAL_ACTUAL_DL_SIZE;
 	info("%s cal data copy size:%d bytes", __func__, OIS_CAL_ACTUAL_DL_SIZE);
 
-	/* The eeprom table revision in DVT2 is 0x33, use it to check the OIS cal data should apply or not*/
-	if(OIS_CAL_DATA_OFFSET == offset) {
-		fp->f_pos = EEPROM_INFO_TABLE_REVISION;
-		nread = vfs_read(fp, (char __user *)buf, 1 , &fp->f_pos);
-		info("eeprom table revision data 0x%0x", buf[0]);
-		if ((nread != 1) ||(buf[0] < 0x33)) {
-			err("ois cal data in eeprom is wrong");
-			ret = -EIO;
-			goto p_err;
-		}
-	}
-
 p_err:
 	if (buf)
 		vfree(buf);
@@ -355,22 +312,26 @@ p_err:
 	return ret;
 }
 
-int fimc_is_ois_fw_update(struct v4l2_subdev *subdev)
+int fimc_is_ois_fw_update(struct v4l2_subdev *subdev, struct v4l2_subdev *eeprom_subdev)
 {
 	int ret = 0;
+	int i = 0;
+	u16 crc_value = 0;
+	u16 crc16 = 0;
 	struct fimc_is_ois *ois = NULL;
+	struct fimc_is_eeprom *eeprom= NULL;
 	static int is_first_load = 1;
 
 	FIMC_BUG(!subdev);
+	FIMC_BUG(!eeprom_subdev);
 
 	info("%s: E", __func__);
 
 	ois = (struct fimc_is_ois *)v4l2_get_subdevdata(subdev);
-	if (!ois) {
-		err("ois is NULL");
-		ret = -EINVAL;
-		return ret;
-	}
+	eeprom = (struct fimc_is_eeprom *)v4l2_get_subdevdata(eeprom_subdev);
+
+	FIMC_BUG(!ois);
+	FIMC_BUG(!eeprom);
 
 	/* OIS Firmware load*/
 	if (1 == is_first_load) {
@@ -384,17 +345,43 @@ int fimc_is_ois_fw_update(struct v4l2_subdev *subdev)
 			err("OIS %s load is fail\n", OIS_FW_2_NAME);
 			return 0;
 		}
-		ret = fimc_is_ois_cal_open(ois, OIS_CAL_DATA_PATH, OIS_CAL_DATA_OFFSET, OIS_CAL_DATA_SIZE, 1);
+
+		crc_value = ((eeprom->data[OIS_CAL_DATA_CRC_FST] << 8) | (eeprom->data[OIS_CAL_DATA_CRC_SEC]));
+
+		crc16 = fimc_is_ois_check_crc(&eeprom->data[OIS_CAL_DATA_OFFSET], OIS_CAL_DATA_SIZE);
+		if (crc_value != crc16) {
+			err("Error to OIS CRC16: 0x%x, cal_buffer CRC: 0x%x", crc16, crc_value);
+			ret = -EINVAL;
+		} else {
+			info("OIS CRC16: 0x%x, cal_buffer CRC: 0x%x\n", crc16, crc_value);
+			/* The eeprom table revision in DVT2 is 0x33, use it to check the OIS cal data should apply or not*/
+			if (eeprom->data[EEPROM_INFO_TABLE_REVISION] < 0x33) {
+				err("ois cal data in eeprom is wrong");
+				ret = -EINVAL;
+			} else {
+				/* Cal data save */
+				memcpy(ois_cal_data, &eeprom->data[OIS_CAL_DATA_OFFSET], OIS_CAL_ACTUAL_DL_SIZE);
+				ois_cal_data_size = OIS_CAL_ACTUAL_DL_SIZE;
+				info("%s cal data copy size:%d bytes", __func__, OIS_CAL_ACTUAL_DL_SIZE);
+				ret = 0;
+			}
+			info("eeprom table revision data 0x%0x", eeprom->data[EEPROM_INFO_TABLE_REVISION]);
+		}
+
 		if (ret < 0) {
 			info(" switch to load default OIS Cal Data %s \n", OIS_CAL_DATA_PATH_DEFAULT);
 			ret = fimc_is_ois_cal_open(ois, OIS_CAL_DATA_PATH_DEFAULT, OIS_CAL_DATA_OFFSET_DEFAULT,
-				OIS_CAL_DATA_SIZE_DEFAULT, 0);
+				OIS_CAL_DATA_SIZE_DEFAULT);
 			if (ret < 0) {
 				err("OIS %s load is fail\n", OIS_CAL_DATA_PATH_DEFAULT);
 				return 0;
 			}
 			ois_isDefaultCalData = 1;
 		}
+		for(i = 0; i < ois_cal_data_size/4; i++) {
+			info("ois cal data (%d): 0x%0x,%0x,%0x,%0x", i, ois_cal_data[4*i+0], ois_cal_data[4*i+1],
+				ois_cal_data[4*i+2], ois_cal_data[4*i+3]);
+		}
 		is_first_load = 0;
 	}