From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Brad Love <brad@nextdimension.cc>,
Mauro Carvalho Chehab <mchehab@s-opensource.com>,
Ben Hutchings <ben.hutchings@codethink.co.uk>
Subject: [PATCH 4.9 42/52] media: cx25840: Use subdev host data for PLL override
Date: Tue, 10 Jul 2018 20:25:10 +0200 [thread overview]
Message-ID: <20180710182453.334057799@linuxfoundation.org> (raw)
In-Reply-To: <20180710182449.285532226@linuxfoundation.org>
4.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Brad Love <brad@nextdimension.cc>
commit 3ee9bc12342cf546313d300808ff47d7dbb8e7db upstream.
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>
Cc: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/i2c/cx25840/cx25840-core.c | 28 ++++++++++++++++++++++------
1 file changed, 22 insertions(+), 6 deletions(-)
--- a/drivers/media/i2c/cx25840/cx25840-core.c
+++ b/drivers/media/i2c/cx25840/cx25840-core.c
@@ -467,8 +467,13 @@ static void cx23885_initialize(struct i2
{
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
@@ -504,8 +509,13 @@ static void cx23885_initialize(struct i2
* 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);
@@ -548,9 +558,15 @@ static void cx23885_initialize(struct i2
/* 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);
@@ -580,7 +596,7 @@ static void cx23885_initialize(struct i2
* 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;
next prev parent reply other threads:[~2018-07-10 18:30 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-10 18:24 [PATCH 4.9 00/52] 4.9.112-stable review Greg Kroah-Hartman
2018-07-10 18:24 ` [PATCH 4.9 01/52] usb: cdc_acm: Add quirk for Uniden UBC125 scanner Greg Kroah-Hartman
2018-07-10 18:24 ` [PATCH 4.9 02/52] USB: serial: cp210x: add CESINEL device ids Greg Kroah-Hartman
2018-07-10 18:24 ` [PATCH 4.9 03/52] USB: serial: cp210x: add Silicon Labs IDs for Windows Update Greg Kroah-Hartman
2018-07-10 18:24 ` [PATCH 4.9 04/52] usb: dwc2: fix the incorrect bitmaps for the ports of multi_tt hub Greg Kroah-Hartman
2018-07-10 18:24 ` [PATCH 4.9 05/52] n_tty: Fix stall at n_tty_receive_char_special() Greg Kroah-Hartman
2018-07-10 18:24 ` [PATCH 4.9 06/52] n_tty: Access echo_* variables carefully Greg Kroah-Hartman
2018-07-10 18:24 ` [PATCH 4.9 07/52] staging: android: ion: Return an ERR_PTR in ion_map_kernel Greg Kroah-Hartman
2018-07-10 18:24 ` [PATCH 4.9 08/52] vt: prevent leaking uninitialized data to userspace via /dev/vcs* Greg Kroah-Hartman
2018-07-10 18:30 ` syzbot
2018-07-10 18:24 ` [PATCH 4.9 09/52] i2c: rcar: fix resume by always initializing registers before transfer Greg Kroah-Hartman
2018-07-10 18:24 ` [PATCH 4.9 10/52] ipv4: Fix error return value in fib_convert_metrics() Greg Kroah-Hartman
2018-07-10 18:24 ` [PATCH 4.9 11/52] kprobes/x86: Do not modify singlestep buffer while resuming Greg Kroah-Hartman
2018-07-10 18:24 ` [PATCH 4.9 12/52] netfilter: nf_tables: use WARN_ON_ONCE instead of BUG_ON in nft_do_chain() Greg Kroah-Hartman
2018-07-10 18:24 ` [PATCH 4.9 13/52] Revert "sit: reload iphdr in ipip6_rcv" Greg Kroah-Hartman
2018-07-10 18:24 ` [PATCH 4.9 14/52] net: phy: micrel: fix crash when statistic requested for KSZ9031 phy Greg Kroah-Hartman
2018-07-10 18:24 ` [PATCH 4.9 15/52] ARM: dts: imx6q: Use correct SDMA script for SPI5 core Greg Kroah-Hartman
2018-07-10 18:24 ` [PATCH 4.9 16/52] IB/hfi1: Fix user context tail allocation for DMA_RTAIL Greg Kroah-Hartman
2018-07-10 18:24 ` [PATCH 4.9 17/52] x86/xen: Add call of speculative_store_bypass_ht_init() to PV paths Greg Kroah-Hartman
2018-07-10 18:24 ` [PATCH 4.9 18/52] x86/cpu: Re-apply forced caps every time CPU caps are re-read Greg Kroah-Hartman
2018-07-10 18:24 ` [PATCH 4.9 19/52] mm: hugetlb: yield when prepping struct pages Greg Kroah-Hartman
2018-07-10 18:24 ` [PATCH 4.9 20/52] tracing: Fix missing return symbol in function_graph output Greg Kroah-Hartman
2018-07-10 18:24 ` [PATCH 4.9 21/52] scsi: sg: mitigate read/write abuse Greg Kroah-Hartman
2018-07-10 18:24 ` [PATCH 4.9 22/52] s390: Correct register corruption in critical section cleanup Greg Kroah-Hartman
2018-07-10 18:24 ` [PATCH 4.9 23/52] drbd: fix access after free Greg Kroah-Hartman
2018-07-10 18:24 ` [PATCH 4.9 24/52] cifs: Fix infinite loop when using hard mount option Greg Kroah-Hartman
2018-07-10 18:24 ` [PATCH 4.9 25/52] drm/udl: fix display corruption of the last line Greg Kroah-Hartman
2018-07-10 18:24 ` [PATCH 4.9 26/52] jbd2: dont mark block as modified if the handle is out of credits Greg Kroah-Hartman
2018-07-10 18:24 ` [PATCH 4.9 27/52] ext4: make sure bitmaps and the inode table dont overlap with bg descriptors Greg Kroah-Hartman
2018-07-10 18:24 ` [PATCH 4.9 28/52] ext4: always check block group bounds in ext4_init_block_bitmap() Greg Kroah-Hartman
2018-07-10 18:24 ` [PATCH 4.9 29/52] ext4: only look at the bg_flags field if it is valid Greg Kroah-Hartman
2018-07-10 18:24 ` [PATCH 4.9 30/52] ext4: verify the depth of extent tree in ext4_find_extent() Greg Kroah-Hartman
2018-07-10 18:24 ` [PATCH 4.9 31/52] ext4: include the illegal physical block in the bad map ext4_error msg Greg Kroah-Hartman
2018-07-10 18:25 ` [PATCH 4.9 32/52] ext4: clear i_data in ext4_inode_info when removing inline data Greg Kroah-Hartman
2018-07-10 18:25 ` [PATCH 4.9 33/52] ext4: add more inode number paranoia checks Greg Kroah-Hartman
2018-07-10 18:25 ` [PATCH 4.9 34/52] ext4: add more mount time checks of the superblock Greg Kroah-Hartman
2018-07-10 18:25 ` [PATCH 4.9 35/52] ext4: check superblock mapped prior to committing Greg Kroah-Hartman
2018-07-10 18:25 ` [PATCH 4.9 36/52] mlxsw: spectrum: Forbid linking of VLAN devices to devices that have uppers Greg Kroah-Hartman
2018-07-10 18:25 ` [PATCH 4.9 37/52] HID: i2c-hid: Fix "incomplete report" noise Greg Kroah-Hartman
2018-07-10 18:25 ` [PATCH 4.9 38/52] HID: hiddev: fix potential Spectre v1 Greg Kroah-Hartman
2018-07-10 18:25 ` [PATCH 4.9 39/52] HID: debug: check length before copy_to_user() Greg Kroah-Hartman
2018-07-10 18:25 ` [PATCH 4.9 40/52] PM / OPP: Update voltage in case freq == old_freq Greg Kroah-Hartman
2018-07-10 18:25 ` [PATCH 4.9 41/52] Kbuild: fix # escaping in .cmd files for future Make Greg Kroah-Hartman
2018-07-10 18:25 ` Greg Kroah-Hartman [this message]
2018-07-10 18:25 ` [PATCH 4.9 43/52] mm, page_alloc: do not break __GFP_THISNODE by zonelist reset Greg Kroah-Hartman
2018-07-10 18:25 ` [PATCH 4.9 44/52] dm bufio: avoid sleeping while holding the dm_bufio lock Greg Kroah-Hartman
2018-07-10 18:25 ` [PATCH 4.9 45/52] dm bufio: drop the lock when doing GFP_NOIO allocation Greg Kroah-Hartman
2018-07-10 18:25 ` [PATCH 4.9 46/52] mtd: rawnand: mxc: set spare area size register explicitly Greg Kroah-Hartman
2018-07-10 18:25 ` [PATCH 4.9 47/52] dm bufio: dont take the lock in dm_bufio_shrink_count Greg Kroah-Hartman
2018-07-10 18:25 ` [PATCH 4.9 48/52] mtd: cfi_cmdset_0002: Change definition naming to retry write operation Greg Kroah-Hartman
2018-07-10 18:25 ` [PATCH 4.9 49/52] mtd: cfi_cmdset_0002: Change erase functions to retry for error Greg Kroah-Hartman
2018-07-10 18:25 ` [PATCH 4.9 50/52] mtd: cfi_cmdset_0002: Change erase functions to check chip good only Greg Kroah-Hartman
2018-07-10 18:25 ` [PATCH 4.9 51/52] netfilter: nf_log: dont hold nf_log_mutex during user access Greg Kroah-Hartman
2018-07-10 18:25 ` [PATCH 4.9 52/52] staging: comedi: quatech_daqp_cs: fix no-op loop daqp_ao_insn_write() Greg Kroah-Hartman
2018-07-10 19:09 ` [PATCH 4.9 00/52] 4.9.112-stable review Nathan Chancellor
2018-07-11 11:04 ` Greg Kroah-Hartman
2018-07-11 11:17 ` Naresh Kamboju
2018-07-11 20:12 ` Dan Rue
2018-07-11 13:40 ` Guenter Roeck
2018-07-11 15:12 ` Shuah Khan
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