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From 43b01937acf76c4d057fd6681ff66f945634f5c4 Mon Sep 17 00:00:00 2001
From: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Date: Thu, 30 Jan 2020 16:41:59 +0300
Subject: [PATCH] media: i2c: isx016: add fixed sensor
This add possibility to enable camera if the imager is not
accessible in i2c line for ID detection
Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
---
drivers/media/i2c/soc_camera/isx016.c | 41 +++++++++++++++++++++++++++++++++++
1 file changed, 41 insertions(+)
diff --git a/drivers/media/i2c/soc_camera/isx016.c b/drivers/media/i2c/soc_camera/isx016.c
index 9465c8f..a9f137c 100644
--- a/drivers/media/i2c/soc_camera/isx016.c
+++ b/drivers/media/i2c/soc_camera/isx016.c
@@ -51,8 +51,21 @@ struct isx016_priv {
int port;
int gpio_resetb;
int gpio_fsin;
+ int fixed_sensor;
};
+static int isx016_fixed = 0;
+module_param(isx016_fixed, int, 0644);
+MODULE_PARM_DESC(isx016_fixed, " isx016 fixed detect (0 - imager disabled)");
+
+static int isx016_width = ISX016_MAX_WIDTH;
+module_param(isx016_width, int, 0644);
+MODULE_PARM_DESC(isx016_width, " isx016 fixed width");
+
+static int isx016_height = ISX016_MAX_HEIGHT;
+module_param(isx016_height, int, 0644);
+MODULE_PARM_DESC(isx016_height, " isx016 fixed height");
+
static inline struct isx016_priv *to_isx016(const struct i2c_client *client)
{
return container_of(i2c_get_clientdata(client), struct isx016_priv, sd);
@@ -371,9 +384,27 @@ static int isx016_initialize(struct i2c_client *client)
int ret = 0;
int tmp_addr;
int i;
+ u8 ser_pid = 0;
isx016_s_port(client, 1);
+ if (priv->fixed_sensor) {
+ tmp_addr = client->addr;
+ if (priv->max9286_addr) {
+ client->addr = priv->max9271_addr;
+ /* check serizlizer ID */
+ reg8_read(client, 0x1e, &ser_pid);
+ }
+ client->addr = tmp_addr;
+
+ if (ser_pid != MAX9271_ID && ser_pid != MAX96705_ID && ser_pid != MAX96707_ID) {
+ ret = -ENODEV;
+ goto err;
+ }
+
+ goto out;
+ }
+
for (i = 0; i < ARRAY_SIZE(isx016_i2c_addr); i++) {
tmp_addr = client->addr;
if (priv->max9286_addr) {
@@ -409,6 +440,7 @@ static int isx016_initialize(struct i2c_client *client)
/* Program wizard registers */
isx016_set_regs(client, isx016_regs_wizard, ARRAY_SIZE(isx016_regs_wizard));
+out:
dev_info(&client->dev, "isx016 PID %x, res %dx%d, OTP_ID %02x:%02x:%02x:%02x:%02x:%02x\n",
pid, priv->max_width, priv->max_height, priv->id[0], priv->id[1], priv->id[2], priv->id[3], priv->id[4], priv->id[5]);
err:
@@ -471,6 +503,15 @@ static int isx016_parse_dt(struct device_node *np, struct isx016_priv *priv)
}
client->addr = tmp_addr;
+ if (of_property_read_u32(np, "isx016,fixed", &priv->fixed_sensor))
+ priv->fixed_sensor = isx016_fixed;
+ if (priv->fixed_sensor) {
+ if (of_property_read_u32(np, "width", &priv->max_width))
+ priv->max_width = ISX016_MAX_WIDTH;
+ if (of_property_read_u32(np, "height", &priv->max_height))
+ priv->max_height = ISX016_MAX_HEIGHT;
+ }
+
return 0;
}
--
2.7.4
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