vdin: use sprintf instead of printk in show functions

PD#134355: vdin: use sprintf instead of printk in show functions

Change-Id: I06abfe9acb27ba7ebe9e4e16aaf90a6e0e7e3601
Signed-off-by: Xuhua Zhang <xuhua.zhang@amlogic.com>

diff --git a/drivers/amlogic/media/vin/tvin/vdin/vdin_debug.c b/drivers/amlogic/media/vin/tvin/vdin/vdin_debug.c
index 73d10aa..a05bc59 100644 (file)
--- a/drivers/amlogic/media/vin/tvin/vdin/vdin_debug.c
+++ b/drivers/amlogic/media/vin/tvin/vdin/vdin_debug.c
@@ -1637,6 +1637,7 @@ static ssize_t vdin_cm2_show(struct device *dev,
             struct device_attribute *attr,
                                             char *buf)
 {
+       int len = 0;
        struct vdin_dev_s *devp;
        unsigned int addr_port = VDIN_CHROMA_ADDR_PORT;
        unsigned int data_port = VDIN_CHROMA_DATA_PORT;
@@ -1646,17 +1647,17 @@ static ssize_t vdin_cm2_show(struct device *dev,
                addr_port = VDIN_CHROMA_ADDR_PORT + devp->addr_offset;
                data_port = VDIN_CHROMA_DATA_PORT + devp->addr_offset;
        }
-       pr_info("addr_port[0x%x] data_port[0x%x]\n",
-               addr_port, data_port);
 
-       pr_info("Usage:");
-       pr_info(" echo wm addr data0 data1 data2 data3 data4 >");
-       pr_info("/sys/class/vdin/vdin0/cm2\n");
-       pr_info(" echo rm addr > / sys/class/vdin/vdin0/cm2\n");
-       pr_info(" echo wm addr data0 data1 data2 data3 data4 >");
-       pr_info("/sys/class/vdin/vdin1/cm2\n");
-       pr_info(" echo rm addr > / sys/class/vdin/vdin1/cm2\n");
-return 0;
+       len += sprintf(buf+len, "addr_port[0x%x] data_port[0x%x]\n",
+               addr_port, data_port);
+       len += sprintf(buf+len, "Usage:");
+       len += sprintf(buf+len, "echo wm addr data0 data1 data2 data3 data4 >");
+       len += sprintf(buf+len, "/sys/class/vdin/vdin0/cm2\n");
+       len += sprintf(buf+len, "echo rm addr > / sys/class/vdin/vdin0/cm2\n");
+       len += sprintf(buf+len, "echo wm addr data0 data1 data2 data3 data4 >");
+       len += sprintf(buf+len, "/sys/class/vdin/vdin1/cm2\n");
+       len += sprintf(buf+len, "echo rm addr > / sys/class/vdin/vdin1/cm2\n");
+       return len;
 }
 
 static ssize_t vdin_cm2_store(struct device *dev,