[media] smiapp: Define macros for obtaining properties of register definitions

The register address, width and flags are encoded as a 32-bit value. Add
macros for obtaining these separately. Use the macros in register access
functions.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

2 files changed, 11 insertions, 6 deletions

diff --git a/drivers/media/i2c/smiapp/smiapp-regs.c b/drivers/media/i2c/smiapp/smiapp-regs.c
index eb5146af9c30..a2098007fb70 100644
--- a/drivers/media/i2c/smiapp/smiapp-regs.c
+++ b/drivers/media/i2c/smiapp/smiapp-regs.c
@@ -165,7 +165,7 @@ static int __smiapp_read(struct smiapp_sensor *sensor, u32 reg, u32 *val,
                          bool only8)
 {
         struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd);
-        unsigned int len = (u8)(reg >> 16);
+        u8 len = SMIAPP_REG_WIDTH(reg);
         int rval;
 
         if (len != SMIAPP_REG_8BIT && len != SMIAPP_REG_16BIT
@@ -173,9 +173,10 @@ static int __smiapp_read(struct smiapp_sensor *sensor, u32 reg, u32 *val,
                 return -EINVAL;
 
         if (len == SMIAPP_REG_8BIT || !only8)
-                rval = ____smiapp_read(sensor, (u16)reg, len, val);
+                rval = ____smiapp_read(sensor, SMIAPP_REG_ADDR(reg), len, val);
         else
-                rval = ____smiapp_read_8only(sensor, (u16)reg, len, val);
+                rval = ____smiapp_read_8only(sensor, SMIAPP_REG_ADDR(reg), len,
+                                             val);
         if (rval < 0)
                 return rval;
 
@@ -227,9 +228,9 @@ int smiapp_write_no_quirk(struct smiapp_sensor *sensor, u32 reg, u32 val)
         struct i2c_msg msg;
         unsigned char data[6];
         unsigned int retries;
-        unsigned int flags = reg >> 24;
-        unsigned int len = (u8)(reg >> 16);
-        u16 offset = reg;
+        u8 flags = SMIAPP_REG_FLAGS(reg);
+        u8 len = SMIAPP_REG_WIDTH(reg);
+        u16 offset = SMIAPP_REG_ADDR(reg);
         int r;
 
         if ((len != SMIAPP_REG_8BIT && len != SMIAPP_REG_16BIT &&
diff --git a/drivers/media/i2c/smiapp/smiapp-regs.h b/drivers/media/i2c/smiapp/smiapp-regs.h
index 81957cbf6a13..35521125a2cc 100644
--- a/drivers/media/i2c/smiapp/smiapp-regs.h
+++ b/drivers/media/i2c/smiapp/smiapp-regs.h
@@ -28,6 +28,10 @@
 #include <linux/i2c.h>
 #include <linux/types.h>
 
+#define SMIAPP_REG_ADDR(reg)            ((u16)reg)
+#define SMIAPP_REG_WIDTH(reg)           ((u8)(reg >> 16))
+#define SMIAPP_REG_FLAGS(reg)           ((u8)(reg >> 24))
+
 /* Use upper 8 bits of the type field for flags */
 #define SMIAPP_REG_FLAG_FLOAT           (1 << 24)