linux-kernel - [PATCH 4.4 229/268] media: cx23885: Set subdev host data to clk

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Date:   Mon, 28 May 2018 12:03:23 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Brad Love <brad@...tdimension.cc>,
        Mauro Carvalho Chehab <mchehab@...pensource.com>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.4 229/268] media: cx23885: Set subdev host data to clk_freq pointer

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Brad Love <brad@...tdimension.cc>

[ Upstream commit 5ceade1d97fc6687e050c44c257382c192f56276 ]

Currently clk_freq is ignored entirely, because the cx235840 driver
configures the xtal at the chip defaults. This is an issue if a
board is produced with a non-default frequency crystal. If clk_freq
is not zero the cx25840 will attempt to use the setting provided,
or fall back to defaults otherwise.

Signed-off-by: Brad Love <brad@...tdimension.cc>
Signed-off-by: Mauro Carvalho Chehab <mchehab@...pensource.com>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/media/pci/cx23885/cx23885-cards.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/drivers/media/pci/cx23885/cx23885-cards.c
+++ b/drivers/media/pci/cx23885/cx23885-cards.c
@@ -2124,6 +2124,10 @@ void cx23885_card_setup(struct cx23885_d
 				&dev->i2c_bus[2].i2c_adap,
 				"cx25840", 0x88 >> 1, NULL);
 		if (dev->sd_cx25840) {
+			/* set host data for clk_freq configuration */
+			v4l2_set_subdev_hostdata(dev->sd_cx25840,
+						&dev->clk_freq);
+
 			dev->sd_cx25840->grp_id = CX23885_HW_AV_CORE;
 			v4l2_subdev_call(dev->sd_cx25840, core, load_fw);
 		}