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Message-ID: <20210617074222.4lbcewsydre4b2nb@uno.localdomain>
Date: Thu, 17 Jun 2021 09:42:22 +0200
From: Jacopo Mondi <jacopo@...ndi.org>
To: Hans Verkuil <hverkuil-cisco@...all.nl>
Cc: Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Jacopo Mondi <jacopo+renesas@...ndi.org>,
kieran.bingham+renesas@...asonboard.com,
niklas.soderlund+renesas@...natech.se, geert@...ux-m68k.org,
Mauro Carvalho Chehab <mchehab@...nel.org>,
linux-media@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 12/15] media: i2c: rdacm20: Embed 'serializer' field
Hello,
On Thu, Jun 17, 2021 at 08:18:42AM +0200, Hans Verkuil wrote:
> On 17/06/2021 02:14, Laurent Pinchart wrote:
> > Hi Jacopo,
> >
> > Thank you for the patch.
> >
> > This should be moved before 11/15 to avoid a bisection breakage (or
> > 11/15 should be fixed, and this patch updated accordingly).
>
> Good catch!
Good catch indeed... Sorry about this I shuffled patches around
multiple times and missed this one
>
> Jacopo, I dropped the PR I made. It you just want to swap patch 11 and 12,
> then I can do that, if you want more extensive changes, then I need a v6.
>
> Let me know what you want.
I think swapping 11 and 12 is enough, thanks for handling it.
(BTW there's one additional tag from Kieran to collect which is not in
v5. Would you like a v6 for that ?)
Thanks
j
>
> Hans
>
> >
> > On Wed, Jun 16, 2021 at 02:46:13PM +0200, Jacopo Mondi wrote:
> >> There's no reason to allocate dynamically the 'serializer' field in
> >> the driver structure.
> >>
> >> Embed the field and adjust all its users in the driver.
> >>
> >> Signed-off-by: Jacopo Mondi <jacopo+renesas@...ndi.org>
> >> Reviewed-by: Kieran Bingham <kieran.bingham+renesas@...asonboard.com>
> >> Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
> >> ---
> >> drivers/media/i2c/rdacm20.c | 36 +++++++++++++++---------------------
> >> 1 file changed, 15 insertions(+), 21 deletions(-)
> >>
> >> diff --git a/drivers/media/i2c/rdacm20.c b/drivers/media/i2c/rdacm20.c
> >> index 5e0314a2b1ca..029af8fd7485 100644
> >> --- a/drivers/media/i2c/rdacm20.c
> >> +++ b/drivers/media/i2c/rdacm20.c
> >> @@ -312,7 +312,7 @@ static const struct ov10635_reg {
> >>
> >> struct rdacm20_device {
> >> struct device *dev;
> >> - struct max9271_device *serializer;
> >> + struct max9271_device serializer;
> >> struct i2c_client *sensor;
> >> struct v4l2_subdev sd;
> >> struct media_pad pad;
> >> @@ -399,7 +399,7 @@ static int rdacm20_s_stream(struct v4l2_subdev *sd, int enable)
> >> {
> >> struct rdacm20_device *dev = sd_to_rdacm20(sd);
> >>
> >> - return max9271_set_serial_link(dev->serializer, enable);
> >> + return max9271_set_serial_link(&dev->serializer, enable);
> >> }
> >>
> >> static int rdacm20_enum_mbus_code(struct v4l2_subdev *sd,
> >> @@ -455,10 +455,10 @@ static int rdacm20_initialize(struct rdacm20_device *dev)
> >> unsigned int retry = 3;
> >> int ret;
> >>
> >> - max9271_wake_up(dev->serializer);
> >> + max9271_wake_up(&dev->serializer);
> >>
> >> /* Serial link disabled during config as it needs a valid pixel clock. */
> >> - ret = max9271_set_serial_link(dev->serializer, false);
> >> + ret = max9271_set_serial_link(&dev->serializer, false);
> >> if (ret)
> >> return ret;
> >>
> >> @@ -466,35 +466,35 @@ static int rdacm20_initialize(struct rdacm20_device *dev)
> >> * Ensure that we have a good link configuration before attempting to
> >> * identify the device.
> >> */
> >> - max9271_configure_i2c(dev->serializer, MAX9271_I2CSLVSH_469NS_234NS |
> >> - MAX9271_I2CSLVTO_1024US |
> >> - MAX9271_I2CMSTBT_105KBPS);
> >> + max9271_configure_i2c(&dev->serializer, MAX9271_I2CSLVSH_469NS_234NS |
> >> + MAX9271_I2CSLVTO_1024US |
> >> + MAX9271_I2CMSTBT_105KBPS);
> >>
> >> - max9271_configure_gmsl_link(dev->serializer);
> >> + max9271_configure_gmsl_link(&dev->serializer);
> >>
> >> - ret = max9271_verify_id(dev->serializer);
> >> + ret = max9271_verify_id(&dev->serializer);
> >> if (ret < 0)
> >> return ret;
> >>
> >> - ret = max9271_set_address(dev->serializer, dev->addrs[0]);
> >> + ret = max9271_set_address(&dev->serializer, dev->addrs[0]);
> >> if (ret < 0)
> >> return ret;
> >> - dev->serializer->client->addr = dev->addrs[0];
> >> + dev->serializer.client->addr = dev->addrs[0];
> >>
> >> /*
> >> * Reset the sensor by cycling the OV10635 reset signal connected to the
> >> * MAX9271 GPIO1 and verify communication with the OV10635.
> >> */
> >> - ret = max9271_enable_gpios(dev->serializer, MAX9271_GPIO1OUT);
> >> + ret = max9271_enable_gpios(&dev->serializer, MAX9271_GPIO1OUT);
> >> if (ret)
> >> return ret;
> >>
> >> - ret = max9271_clear_gpios(dev->serializer, MAX9271_GPIO1OUT);
> >> + ret = max9271_clear_gpios(&dev->serializer, MAX9271_GPIO1OUT);
> >> if (ret)
> >> return ret;
> >> usleep_range(10000, 15000);
> >>
> >> - ret = max9271_set_gpios(dev->serializer, MAX9271_GPIO1OUT);
> >> + ret = max9271_set_gpios(&dev->serializer, MAX9271_GPIO1OUT);
> >> if (ret)
> >> return ret;
> >> usleep_range(10000, 15000);
> >> @@ -564,13 +564,7 @@ static int rdacm20_probe(struct i2c_client *client)
> >> if (!dev)
> >> return -ENOMEM;
> >> dev->dev = &client->dev;
> >> -
> >> - dev->serializer = devm_kzalloc(&client->dev, sizeof(*dev->serializer),
> >> - GFP_KERNEL);
> >> - if (!dev->serializer)
> >> - return -ENOMEM;
> >> -
> >> - dev->serializer->client = client;
> >> + dev->serializer.client = client;
> >>
> >> ret = of_property_read_u32_array(client->dev.of_node, "reg",
> >> dev->addrs, 2);
> >
>
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