1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
From df920df1a7a26dd4b49f90d4ce4e94b2541348d6 Mon Sep 17 00:00:00 2001
From: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Date: Thu, 3 Jan 2019 23:24:03 +0300
Subject: [PATCH 086/122] lvds: poll ub960 deserializer lock status
Poll FPDLINK lock status instead delay
Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
---
drivers/media/i2c/soc_camera/ti9x4.c | 35 ++++++++++++++++++++++++++++++-----
1 file changed, 30 insertions(+), 5 deletions(-)
diff --git a/drivers/media/i2c/soc_camera/ti9x4.c b/drivers/media/i2c/soc_camera/ti9x4.c
index d03c0f9..f0b782f 100644
--- a/drivers/media/i2c/soc_camera/ti9x4.c
+++ b/drivers/media/i2c/soc_camera/ti9x4.c
@@ -278,7 +278,9 @@ static void ti9x4_fpdlink3_setup(struct i2c_client *client, int idx)
static int ti9x4_initialize(struct i2c_client *client)
{
struct ti9x4_priv *priv = i2c_get_clientdata(client);
- int idx;
+ int idx, timeout;
+ u8 port_sts1 = 0, port_sts2 = 0;
+ int tmp_addr;
dev_info(&client->dev, "LINKs=%d, LANES=%d, FORWARDING=%s, CABLE=%s, ID=%s\n",
priv->links, priv->lanes, priv->forwarding_mode, priv->is_coax ? "coax" : "stp", priv->chip_id);
@@ -294,12 +296,35 @@ static int ti9x4_initialize(struct i2c_client *client)
ti9x4_fpdlink3_setup(client, idx);
}
- /* extra delay to wait imager power up */
- if (priv->poc_delay)
- mdelay(350);
-
client->addr = priv->des_addr;
+ /* check lock status */
+ for (timeout = 500 / priv->links; timeout > 0; timeout--) {
+ for (idx = 0; idx < priv->links; idx++) {
+ reg8_write(client, 0x4c, (idx << 4) | (1 << idx)); /* Select RX port number */
+ usleep_range(1000, 1500); /* wait 1ms */
+ reg8_read(client, 0x4d, &port_sts1); /* Lock status */
+ reg8_read(client, 0x4e, &port_sts2); /* Freq stable */
+
+ if (port_sts1 & 0x1) {
+ tmp_addr = client->addr;
+ client->addr = priv->ti9x3_addr_map[idx]; /* TI9X3 I2C addr */
+ reg8_write(client, 0x0d, 0xf0); /* Enable all remote GPIOs */
+ reg8_write(client, 0x0e, 0xf0); /* Enable serializer GPIOs */
+ client->addr = tmp_addr;
+ }
+
+ if ((port_sts1 & 0x1) && (port_sts2 & 0x4))
+ goto out;
+ }
+ }
+
+ if (!timeout)
+ dev_info(&client->dev, "Receiver is not locked\n");
+out:
+ if (priv->poc_delay)
+ mdelay(100);
+
return 0;
}
--
2.7.4
|
