UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

media: cx25840: Use subdev host data for PLL override 

The cx25840 driver currently configures 885, 887, and 888 using
default divisors for each chip. This check to see if the cx23885
driver has passed the cx25840 a non-default clock rate for a
specific chip. If a cx23885 board has left clk_freq at 0, the
clock default values will be used to configure the PLLs.

This patch only has effect on 888 boards who set clk_freq to 25M.

Signed-off-by: Brad Love <brad@nextdimension.cc>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Brad Love 2018-03-06 14:15:34 -05:00 committed by Mauro Carvalho Chehab
parent 9cbf518efa
commit 3ee9bc1234
1 changed files with 22 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
drivers/media/i2c/cx25840/cx25840-core.c
View File

@ -463,8 +463,13 @@ static void cx23885_initialize(struct i2c_client *client)
{
DEFINE_WAIT(wait);
struct cx25840_state *state = to_state(i2c_get_clientdata(client));
u32 clk_freq = 0;
struct workqueue_struct *q;
/* cx23885 sets hostdata to clk_freq pointer */
if (v4l2_get_subdev_hostdata(&state->sd))
clk_freq = *((u32 *)v4l2_get_subdev_hostdata(&state->sd));
/*
* Come out of digital power down
* The CX23888, at least, needs this, otherwise registers aside from
@ -500,8 +505,13 @@ static void cx23885_initialize(struct i2c_client *client)
* 50.0 MHz * (0xb + 0xe8ba26/0x2000000)/4 = 5 * 28.636363 MHz
* 572.73 MHz before post divide
*/
/* HVR1850 or 50MHz xtal */
cx25840_write(client, 0x2, 0x71);
if (clk_freq == 25000000) {
/* 888/ImpactVCBe or 25Mhz xtal */
; /* nothing to do */
} else {
/* HVR1850 or 50MHz xtal */
cx25840_write(client, 0x2, 0x71);
}
cx25840_write4(client, 0x11c, 0x01d1744c);
cx25840_write4(client, 0x118, 0x00000416);
cx25840_write4(client, 0x404, 0x0010253e);
@ -544,9 +554,15 @@ static void cx23885_initialize(struct i2c_client *client)
/* HVR1850 */
switch (state->id) {
case CX23888_AV:
/* 888/HVR1250 specific */
cx25840_write4(client, 0x10c, 0x13333333);
cx25840_write4(client, 0x108, 0x00000515);
if (clk_freq == 25000000) {
/* 888/ImpactVCBe or 25MHz xtal */
cx25840_write4(client, 0x10c, 0x01b6db7b);
cx25840_write4(client, 0x108, 0x00000512);
} else {
/* 888/HVR1250 or 50MHz xtal */
cx25840_write4(client, 0x10c, 0x13333333);
cx25840_write4(client, 0x108, 0x00000515);
}
break;
default:
cx25840_write4(client, 0x10c, 0x002be2c9);
@ -576,7 +592,7 @@ static void cx23885_initialize(struct i2c_client *client)
* 368.64 MHz before post divide
* 122.88 MHz / 0xa = 12.288 MHz
*/
/* HVR1850 or 50MHz xtal */
/* HVR1850 or 50MHz xtal or 25MHz xtal */
cx25840_write4(client, 0x114, 0x017dbf48);
cx25840_write4(client, 0x110, 0x000a030e);
break;