From: Lad, Prabhakar <prabhakar.lad@xxxxxx> add OF support for the tvp514x driver. Signed-off-by: Lad, Prabhakar <prabhakar.lad@xxxxxx> Cc: Hans Verkuil <hans.verkuil@xxxxxxxxx> Cc: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> Cc: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx> Cc: Guennadi Liakhovetski <g.liakhovetski@xxxxxx> Cc: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx> Cc: Sakari Ailus <sakari.ailus@xxxxxx> Cc: Grant Likely <grant.likely@xxxxxxxxxxxx> Cc: Rob Herring <rob.herring@xxxxxxxxxxx> Cc: Rob Landley <rob@xxxxxxxxxxx> Cc: devicetree-discuss@xxxxxxxxxxxxxxxx Cc: linux-doc@xxxxxxxxxxxxxxx Cc: linux-kernel@xxxxxxxxxxxxxxx --- Changes for v2: 1: Fixed review comment pointed by Heiko. 2: Fixed review comment pointed by Laurent. This patch is on top of following patches: 1: https://patchwork.kernel.org/patch/1930941/ 2: http://patchwork.linuxtv.org/patch/16193/ 3: https://patchwork.kernel.org/patch/1944901 .../devicetree/bindings/media/i2c/tvp514x.txt | 38 +++++++++++ drivers/media/i2c/tvp514x.c | 70 ++++++++++++++++++-- 2 files changed, 103 insertions(+), 5 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..55d3ffd --- /dev/null +++ b/Documentation/devicetree/bindings/media/i2c/tvp514x.txt @@ -0,0 +1,38 @@ +* 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: Must be "ti,tvp514x-decoder" +- hsync-active: HSYNC Polarity configuration for current interface. +- vsync-active: VSYNC Polarity configuration for current interface. +- data-active: Clock polarity of the current interface. + +Example: + +i2c0@1c22000 { + ... + ... + + tvp514x@5c { + compatible = "ti,tvp514x-decoder"; + reg = <0x5c>; + + port { + tvp514x_1: endpoint { + /* Active high (Defaults to 0) */ + hsync-active = <1>; + /* Active high (Defaults to 0) */ + hsync-active = <1>; + /* Active low (Defaults to 0) */ + data-active = <0>; + }; + }; + }; + ... +}; diff --git a/drivers/media/i2c/tvp514x.c b/drivers/media/i2c/tvp514x.c index a4f0a70..24ce759 100644 --- a/drivers/media/i2c/tvp514x.c +++ b/drivers/media/i2c/tvp514x.c @@ -12,6 +12,7 @@ * Hardik Shah <hardik.shah@xxxxxx> * Manjunath Hadli <mrh@xxxxxx> * Karicheri Muralidharan <m-karicheri2@xxxxxx> + * Prabhakar Lad <prabhakar.lad@xxxxxx> * * This package is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -33,7 +34,9 @@ #include <linux/delay.h> #include <linux/videodev2.h> #include <linux/module.h> +#include <linux/of_device.h> +#include <media/v4l2-of.h> #include <media/v4l2-async.h> #include <media/v4l2-device.h> #include <media/v4l2-common.h> @@ -930,6 +933,58 @@ static struct tvp514x_decoder tvp514x_dev = { }; +#if defined(CONFIG_OF) +static const struct of_device_id tvp514x_of_match[] = { + {.compatible = "ti,tvp514x-decoder", }, + {}, +}; +MODULE_DEVICE_TABLE(of, tvp514x_of_match); + +static struct tvp514x_platform_data + *tvp514x_get_pdata(struct i2c_client *client) +{ + if (!client->dev.platform_data && client->dev.of_node) { + struct tvp514x_platform_data *pdata; + struct v4l2_of_endpoint bus_cfg; + struct device_node *endpoint; + + pdata = devm_kzalloc(&client->dev, + sizeof(struct tvp514x_platform_data), + GFP_KERNEL); + client->dev.platform_data = pdata; + if (!pdata) + return NULL; + + endpoint = of_get_child_by_name(client->dev.of_node, "port"); + if (endpoint) + endpoint = of_get_child_by_name(endpoint, "endpoint"); + + if (!endpoint) { + v4l2_info(client, "Using default data!!\n"); + } else { + v4l2_of_parse_parallel_bus(endpoint, &bus_cfg); + + if (bus_cfg.mbus_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) + pdata->hs_polarity = 1; + if (bus_cfg.mbus_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) + pdata->vs_polarity = 1; + if (bus_cfg.mbus_flags & V4L2_MBUS_PCLK_SAMPLE_RISING) + pdata->clk_polarity = 1; + } + } + + return client->dev.platform_data; +} +#else +#define tvp514x_of_match NULL + +static struct tvp514x_platform_data + *tvp514x_get_pdata(struct i2c_client *client) +{ + return client->dev.platform_data; +} +#endif + /** * tvp514x_probe() - decoder driver i2c probe handler * @client: i2c driver client device structure @@ -941,6 +996,7 @@ 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; struct tvp514x_decoder *decoder; struct v4l2_subdev *sd; int ret; @@ -949,22 +1005,25 @@ tvp514x_probe(struct i2c_client *client, const struct i2c_device_id *id) if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) return -EIO; + pdata = tvp514x_get_pdata(client); + if (!pdata) { + v4l2_err(client, "No platform data!!\n"); + return -EPROBE_DEFER; + } + decoder = devm_kzalloc(&client->dev, sizeof(*decoder), GFP_KERNEL); if (!decoder) return -ENOMEM; /* Initialize the tvp514x_decoder with default configuration */ *decoder = tvp514x_dev; - if (!client->dev.platform_data) { - v4l2_err(client, "No platform data!!\n"); - return -EPROBE_DEFER; - } + /* Copy default register configuration */ memcpy(decoder->tvp514x_regs, tvp514x_reg_list_default, 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 @@ -1096,6 +1155,7 @@ MODULE_DEVICE_TABLE(i2c, tvp514x_id); static struct i2c_driver tvp514x_driver = { .driver = { + .of_match_table = tvp514x_of_match, .owner = THIS_MODULE, .name = TVP514X_MODULE_NAME, }, -- 1.7.4.1 -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
