linux-kernel - [PATCH 2/3] media: i2c: video-i2c: Replace constants with proper names

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Date:   Tue, 19 Apr 2022 22:20:50 +0200
From:   Moses Christopher Bollavarapu <mosescb.dev@...il.com>
To:     matt.ranostay@...sulko.com, mchehab@...nel.org,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Moses Christopher Bollavarapu <mosescb.dev@...il.com>
Subject: [PATCH 2/3] media: i2c: video-i2c: Replace constants with proper names

Acc to MLX90640 datasheet:
 - 0x0400 represents the start of RAM address
 - 0x2400 represents the start of EEPROM address

Reference: https://www.melexis.com/-/media/files/documents\
           /datasheets/mlx90640-datasheet-melexis.pdf

Signed-off-by: Moses Christopher Bollavarapu <mosescb.dev@...il.com>
---
 drivers/media/i2c/video-i2c.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/media/i2c/video-i2c.c b/drivers/media/i2c/video-i2c.c
index b3fe9a507f7f..1d5f48329cb2 100644
--- a/drivers/media/i2c/video-i2c.c
+++ b/drivers/media/i2c/video-i2c.c
@@ -54,6 +54,12 @@
 /* Temperature register */
 #define AMG88XX_REG_T01L	0x80
 
+/* RAM */
+#define MLX90640_RAM_START_ADDR		0x0400
+
+/* EEPROM */
+#define MLX90640_EEPROM_START_ADDR	0x2400
+
 /* Control register */
 #define MLX90640_REG_CTL1		0x800d
 #define MLX90640_REG_CTL1_MASK		0x0380
@@ -149,7 +155,7 @@ static int mlx90640_nvram_read(void *priv, unsigned int offset, void *val,
 {
 	struct video_i2c_data *data = priv;
 
-	return regmap_bulk_read(data->regmap, 0x2400 + offset, val, bytes);
+	return regmap_bulk_read(data->regmap, MLX90640_EEPROM_START_ADDR + offset, val, bytes);
 }
 
 static struct nvmem_config mlx90640_nvram_config = {
@@ -168,7 +174,7 @@ static int amg88xx_xfer(struct video_i2c_data *data, char *buf)
 
 static int mlx90640_xfer(struct video_i2c_data *data, char *buf)
 {
-	return regmap_bulk_read(data->regmap, 0x400, buf,
+	return regmap_bulk_read(data->regmap, MLX90640_RAM_START_ADDR, buf,
 				data->chip->buffer_size);
 }
 
-- 
2.30.2