Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758077Ab3EWJpd (ORCPT ); Thu, 23 May 2013 05:45:33 -0400 Received: from ams-iport-2.cisco.com ([144.254.224.141]:29129 "EHLO ams-iport-2.cisco.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757845Ab3EWJpa (ORCPT ); Thu, 23 May 2013 05:45:30 -0400 X-IronPort-AV: E=Sophos;i="4.87,727,1363132800"; d="scan'208";a="82778883" From: Hans Verkuil To: Lad Prabhakar Subject: Re: [PATCH v3] media: i2c: tvp514x: add OF support Date: Thu, 23 May 2013 11:45:13 +0200 User-Agent: KMail/1.13.7 (Linux/3.9-2.slh.1-aptosid-amd64; KDE/4.8.4; x86_64; ; ) Cc: LMML , LKML , DLOS , Hans Verkuil , Laurent Pinchart , Mauro Carvalho Chehab , Guennadi Liakhovetski , Sylwester Nawrocki , Sakari Ailus , Grant Likely , Rob Herring , Rob Landley , devicetree-discuss@lists.ozlabs.org, linux-doc@vger.kernel.org References: <1368529236-18199-1-git-send-email-prabhakar.csengg@gmail.com> In-Reply-To: <1368529236-18199-1-git-send-email-prabhakar.csengg@gmail.com> MIME-Version: 1.0 Content-Type: Text/Plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <201305231145.13303.hverkuil@xs4all.nl> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 7729 Lines: 239 On Tue 14 May 2013 13:00:36 Lad Prabhakar wrote: > From: Lad, Prabhakar > > add OF support for the tvp514x driver. Alongside this patch > removes unnecessary header file inclusion and sorts them alphabetically. > > Signed-off-by: Lad, Prabhakar > Cc: Hans Verkuil > Cc: Laurent Pinchart > Cc: Mauro Carvalho Chehab > Cc: Guennadi Liakhovetski > Cc: Sylwester Nawrocki > Cc: Sakari Ailus > Cc: Grant Likely > Cc: Rob Herring > Cc: Rob Landley > Cc: devicetree-discuss@lists.ozlabs.org > Cc: linux-doc@vger.kernel.org > Cc: linux-kernel@vger.kernel.org > Cc: davinci-linux-open-source@linux.davincidsp.com > --- > Tested on da850-evm. > > RFC v1: https://patchwork.kernel.org/patch/2030061/ > RFC v2: https://patchwork.kernel.org/patch/2061811/ > > Changes for current version from RFC v2: > 1: Fixed review comments pointed by Sylwester. > > Changes for v2: > 1: Listed all the compatible property values in the documentation text file. > 2: Removed "-decoder" from compatible property values. > 3: Added a reference to the V4L2 DT bindings documentation to explain > what the port and endpoint nodes are for. > 4: Fixed some Nits pointed by Laurent. > 5: Removed unnecessary header file includes and sort them alphabetically. > > Changes for v3: > 1: Rebased on patch https://patchwork.kernel.org/patch/2539411/ > > .../devicetree/bindings/media/i2c/tvp514x.txt | 45 ++++++++++++ > drivers/media/i2c/tvp514x.c | 74 +++++++++++++++---- > 2 files changed, 103 insertions(+), 16 deletions(-) > create mode 100644 Documentation/devicetree/bindings/media/i2c/tvp514x.txt > > diff --git a/Documentation/devicetree/bindings/media/i2c/tvp514x.txt b/Documentation/devicetree/bindings/media/i2c/tvp514x.txt > new file mode 100644 > index 0000000..cc09424 > --- /dev/null > +++ b/Documentation/devicetree/bindings/media/i2c/tvp514x.txt > @@ -0,0 +1,45 @@ > +* Texas Instruments TVP514x video decoder > + > +The TVP5146/TVP5146m2/TVP5147/TVP5147m1 device is high quality, single-chip > +digital video decoder that digitizes and decodes all popular baseband analog > +video formats into digital video component. The tvp514x decoder supports analog- > +to-digital (A/D) conversion of component RGB and YPbPr signals as well as A/D > +conversion and decoding of NTSC, PAL and SECAM composite and S-video into > +component YCbCr. > + > +Required Properties : > +- compatible : value should be either one among the following > + (a) "ti,tvp5146" for tvp5146 decoder. > + (b) "ti,tvp5146m2" for tvp5146m2 decoder. > + (c) "ti,tvp5147" for tvp5147 decoder. > + (d) "ti,tvp5147m1" for tvp5147m1 decoder. > + > +- hsync-active: HSYNC Polarity configuration for endpoint. > + > +- vsync-active: VSYNC Polarity configuration for endpoint. > + > +- pclk-sample: Clock polarity of the endpoint. > + > + > +For further reading of port node refer Documentation/devicetree/bindings/media/ > +video-interfaces.txt. > + > +Example: > + > + i2c0@1c22000 { > + ... > + ... > + tvp514x@5c { > + compatible = "ti,tvp5146"; > + reg = <0x5c>; > + > + port { > + tvp514x_1: endpoint { > + hsync-active = <1>; > + vsync-active = <1>; > + pclk-sample = <0>; > + }; > + }; > + }; > + ... > + }; > diff --git a/drivers/media/i2c/tvp514x.c b/drivers/media/i2c/tvp514x.c > index 01d9757..202c8cb 100644 > --- a/drivers/media/i2c/tvp514x.c > +++ b/drivers/media/i2c/tvp514x.c > @@ -29,21 +29,16 @@ > * > */ > > -#include > -#include > #include > -#include > +#include > #include > -#include > > +#include > +#include > #include > -#include > -#include > -#include > -#include > #include > -#include > -#include > +#include > +#include Same issue as with other patches: be careful about removing headers, i.e. don't rely on them being included in other headers. If you use something from a header, then just include it. Regards, Hans > > #include "tvp514x_regs.h" > > @@ -1056,6 +1051,40 @@ static struct tvp514x_decoder tvp514x_dev = { > > }; > > +static struct tvp514x_platform_data * > +tvp514x_get_pdata(struct i2c_client *client) > +{ > + struct tvp514x_platform_data *pdata; > + struct v4l2_of_endpoint bus_cfg; > + struct device_node *endpoint; > + unsigned int flags; > + > + if (!IS_ENABLED(CONFIG_OF) || !client->dev.of_node) > + return client->dev.platform_data; > + > + endpoint = v4l2_of_get_next_endpoint(client->dev.of_node, NULL); > + if (!endpoint) > + return NULL; > + > + pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL); > + if (!pdata) > + return NULL; > + > + v4l2_of_parse_endpoint(endpoint, &bus_cfg); > + flags = bus_cfg.bus.parallel.flags; > + > + if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) > + pdata->hs_polarity = 1; > + > + if (flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) > + pdata->vs_polarity = 1; > + > + if (flags & V4L2_MBUS_PCLK_SAMPLE_RISING) > + pdata->clk_polarity = 1; > + > + return pdata; > +} > + > /** > * tvp514x_probe() - decoder driver i2c probe handler > * @client: i2c driver client device structure > @@ -1067,19 +1096,20 @@ static struct tvp514x_decoder tvp514x_dev = { > static int > tvp514x_probe(struct i2c_client *client, const struct i2c_device_id *id) > { > + struct tvp514x_platform_data *pdata = tvp514x_get_pdata(client); > struct tvp514x_decoder *decoder; > struct v4l2_subdev *sd; > int ret; > > + if (pdata == NULL) { > + dev_err(&client->dev, "No platform data\n"); > + return -EINVAL; > + } > + > /* Check if the adapter supports the needed features */ > if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) > return -EIO; > > - if (!client->dev.platform_data) { > - v4l2_err(client, "No platform data!!\n"); > - return -ENODEV; > - } > - > decoder = devm_kzalloc(&client->dev, sizeof(*decoder), GFP_KERNEL); > if (!decoder) > return -ENOMEM; > @@ -1091,7 +1121,7 @@ tvp514x_probe(struct i2c_client *client, const struct i2c_device_id *id) > sizeof(tvp514x_reg_list_default)); > > /* Copy board specific information here */ > - decoder->pdata = client->dev.platform_data; > + decoder->pdata = pdata; > > /** > * Fetch platform specific data, and configure the > @@ -1239,8 +1269,20 @@ static const struct i2c_device_id tvp514x_id[] = { > > MODULE_DEVICE_TABLE(i2c, tvp514x_id); > > +#if IS_ENABLED(CONFIG_OF) > +static const struct of_device_id tvp514x_of_match[] = { > + { .compatible = "ti,tvp5146", }, > + { .compatible = "ti,tvp5146m2", }, > + { .compatible = "ti,tvp5147", }, > + { .compatible = "ti,tvp5147m1", }, > + { /* sentinel */ }, > +}; > +MODULE_DEVICE_TABLE(of, tvp514x_of_match); > +#endif > + > static struct i2c_driver tvp514x_driver = { > .driver = { > + .of_match_table = of_match_ptr(tvp514x_of_match), > .owner = THIS_MODULE, > .name = TVP514X_MODULE_NAME, > }, > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/