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Commit 67b2b34f authored by Vishalsingh Hajeri's avatar Vishalsingh Hajeri Committed by Gerrit - the friendly Code Review server
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msm: camera: sensor: Allocate buffer to be of DMA memory type 



QUP I2C requires DMA memory buffer.

Change-Id: I4c4425e3f77c674e9d0cce0ca75b130cf4ae0644
Signed-off-by: default avatarVishalsingh Hajeri <vhajeri@codeaurora.org>
parent f09e00fd

drivers/media/platform/msm/camera/cam_sensor_module/cam_sensor_io/cam_sensor_qup_i2c.c

+14 −3
Original line number Diff line number Diff line
@@ -245,9 +245,15 @@ static int32_t cam_qup_i2c_write(struct camera_io_master *client, 
	enum camera_sensor_i2c_type data_type)

{

	int32_t rc = 0;

	unsigned char buf[I2C_REG_MAX_BUF_SIZE];

	unsigned char *buf = NULL;

	uint8_t len = 0;



	buf = kzalloc(I2C_REG_MAX_BUF_SIZE, GFP_KERNEL | GFP_DMA);

	if (!buf) {

		CAM_ERR(CAM_SENSOR, "Buffer memory allocation failed");

		return -ENOMEM;

	}



	CAM_DBG(CAM_SENSOR, "reg addr = 0x%x data type: %d",

			reg_setting->reg_addr, data_type);

	if (addr_type == CAMERA_SENSOR_I2C_TYPE_BYTE) {
@@ -273,7 +279,8 @@ static int32_t cam_qup_i2c_write(struct camera_io_master *client, 
		len = 4;

	} else {

		CAM_ERR(CAM_SENSOR, "Invalid I2C addr type");

		return -EINVAL;

		rc = -EINVAL;

		goto deallocate_buffer;

	}



	CAM_DBG(CAM_SENSOR, "Data: 0x%x", reg_setting->reg_data);
@@ -307,12 +314,16 @@ static int32_t cam_qup_i2c_write(struct camera_io_master *client, 
		len += 4;

	} else {

		CAM_ERR(CAM_SENSOR, "Invalid Data Type");

		return -EINVAL;

		rc = -EINVAL;

		goto deallocate_buffer;

	}



	rc = cam_qup_i2c_txdata(client, buf, len);

	if (rc < 0)

		CAM_ERR(CAM_SENSOR, "failed rc: %d", rc);



deallocate_buffer:

	kfree(buf);

	return rc;

}