[PATCH] media: i2c: adv7343: add OF support
Prabhakar Lad
prabhakar.csengg at gmail.com
Fri Apr 26 23:18:06 EST 2013
From: Lad, Prabhakar <prabhakar.csengg at gmail.com>
add OF support for the adv7343 driver.
Signed-off-by: Lad, Prabhakar <prabhakar.csengg at gmail.com>
Cc: Hans Verkuil <hans.verkuil at cisco.com>
Cc: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
Cc: Mauro Carvalho Chehab <mchehab at redhat.com>
Cc: Guennadi Liakhovetski <g.liakhovetski at gmx.de>
Cc: Sylwester Nawrocki <s.nawrocki at samsung.com>
Cc: Sakari Ailus <sakari.ailus at iki.fi>
Cc: Grant Likely <grant.likely at secretlab.ca>
Cc: Rob Herring <rob.herring at calxeda.com>
Cc: Rob Landley <rob at landley.net>
Cc: devicetree-discuss at lists.ozlabs.org
Cc: linux-doc at vger.kernel.org
Cc: linux-kernel at vger.kernel.org
Cc: davinci-linux-open-source at linux.davincidsp.com
---
.../devicetree/bindings/media/i2c/adv7343.txt | 69 ++++++++++++++++++
drivers/media/i2c/adv7343.c | 75 +++++++++++++++++++-
2 files changed, 142 insertions(+), 2 deletions(-)
create mode 100644 Documentation/devicetree/bindings/media/i2c/adv7343.txt
diff --git a/Documentation/devicetree/bindings/media/i2c/adv7343.txt b/Documentation/devicetree/bindings/media/i2c/adv7343.txt
new file mode 100644
index 0000000..8426f8d
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/adv7343.txt
@@ -0,0 +1,69 @@
+* Analog Devices adv7343 video encoder
+
+The ADV7343 are high speed, digital-to-analog video encoders in a 64-lead LQFP
+package. Six high speed, 3.3 V, 11-bit video DACs provide support for composite
+(CVBS), S-Video (Y-C), and component (YPrPb/RGB) analog outputs in standard
+definition (SD), enhanced definition (ED), or high definition (HD) video
+formats.
+
+The ADV7343 have a 24-bit pixel input port that can be configured in a variety
+of ways. SD video formats are supported over an SDR interface, and ED/HD video
+formats are supported over SDR and DDR interfaces. Pixel data can be supplied
+in either the YCrCb or RGB color spaces.
+
+Required Properties :
+- compatible: Must be "ad,adv7343-encoder"
+
+Optional Properties :
+- ad-adv7343-power-mode-sleep-mode: on enable the current consumption is
+ reduced to micro ampere level. All DACs and
+ the internal PLL circuit are disabled.
+- ad-adv7343-power-mode-pll-ctrl: PLL and oversampling control. This control
+ allows internal PLL 1 circuit to be powered
+ down and the oversampling to beswitched off.
+- ad-adv7343-power-mode-dac-1: power on/off DAC 1.
+- ad-adv7343-power-mode-dac-2: power on/off DAC 2.
+- ad-adv7343-power-mode-dac-3: power on/off DAC 3.
+- ad-adv7343-power-mode-dac-4: power on/off DAC 4.
+- ad-adv7343-power-mode-dac-5: power on/off DAC 5.
+- ad-adv7343-power-mode-dac-6: power on/off DAC 6.
+- ad-adv7343-sd-config-dac-out-1: Configure SD DAC Output 1.
+- ad-adv7343-sd-config-dac-out-2: Configure SD DAC Output 2.
+
+Example:
+
+i2c0 at 1c22000 {
+ ...
+ ...
+
+ adv7343 at 2a {
+ compatible = "ad,adv7343-encoder";
+ reg = <0x2a>;
+
+ port {
+ adv7343_1: endpoint {
+ /* Active high (Defaults to false) */
+ ad-adv7343-power-mode-sleep-mode;
+ /* Active high (Defaults to false) */
+ ad-adv7343-power-mode-pll-ctrl;
+ /* Active high (Defaults to false) */
+ ad-adv7343-power-mode-dac-1;
+ /* Active high (Defaults to false) */
+ ad-adv7343-power-mode-dac-2;
+ /* Active high (Defaults to false) */
+ ad-adv7343-power-mode-dac-3;
+ /* Active high (Defaults to false) */
+ ad-adv7343-power-mode-dac-4;
+ /* Active high (Defaults to false) */
+ ad-adv7343-power-mode-dac-5;
+ /* Active high (Defaults to false) */
+ ad-adv7343-power-mode-dac-6;
+ /* Active high (Defaults to false) */
+ ad-adv7343-sd-config-dac-out-1;
+ /* Active high (Defaults to false) */
+ ad-adv7343-sd-config-dac-out-2 = <0>;
+ };
+ };
+ };
+ ...
+};
diff --git a/drivers/media/i2c/adv7343.c b/drivers/media/i2c/adv7343.c
index 469e262..eb12d1a 100644
--- a/drivers/media/i2c/adv7343.c
+++ b/drivers/media/i2c/adv7343.c
@@ -25,12 +25,14 @@
#include <linux/module.h>
#include <linux/videodev2.h>
#include <linux/uaccess.h>
+#include <linux/of_device.h>
#include <media/adv7343.h>
#include <media/v4l2-async.h>
#include <media/v4l2-device.h>
#include <media/v4l2-chip-ident.h>
#include <media/v4l2-ctrls.h>
+#include <media/v4l2-of.h>
#include "adv7343_regs.h"
@@ -409,6 +411,75 @@ static int adv7343_initialize(struct v4l2_subdev *sd)
return err;
}
+#if defined(CONFIG_OF)
+static const struct of_device_id adv7343_of_match[] = {
+ {.compatible = "ad,adv7343-encoder", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, adv7343_of_match);
+
+static void adv7343_get_pdata(struct i2c_client *client,
+ struct adv7343_state *decoder)
+{
+ if (!client->dev.platform_data && client->dev.of_node) {
+ struct device_node *np;
+ struct adv7343_platform_data *pdata;
+
+ np = v4l2_of_get_next_endpoint(client->dev.of_node, NULL);
+ if (!np)
+ return;
+
+ pdata = devm_kzalloc(&client->dev,
+ sizeof(struct adv7343_platform_data),
+ GFP_KERNEL);
+ if (!pdata) {
+ pr_warn("adv7343 failed allocate memeory\n");
+ return;
+ }
+
+ pdata->mode_config.sleep_mode =
+ of_property_read_bool(np, "ad-adv7343-power-mode-sleep-mode");
+
+ pdata->mode_config.pll_control =
+ of_property_read_bool(np, "ad-adv7343-power-mode-pll-ctrl");
+
+ pdata->mode_config.dac_1 =
+ of_property_read_bool(np, "ad-adv7343-power-mode-dac-1");
+
+ pdata->mode_config.dac_2 =
+ of_property_read_bool(np, "ad-adv7343-power-mode-dac-2");
+
+ pdata->mode_config.dac_3 =
+ of_property_read_bool(np, "ad-adv7343-power-mode-dac-3");
+
+ pdata->mode_config.dac_4 =
+ of_property_read_bool(np, "ad-adv7343-power-mode-dac-4");
+
+ pdata->mode_config.dac_5 =
+ of_property_read_bool(np, "ad-adv7343-power-mode-dac-5");
+
+ pdata->mode_config.dac_6 =
+ of_property_read_bool(np, "ad-adv7343-power-mode-dac-6");
+
+ pdata->sd_config.sd_dac_out1 =
+ of_property_read_bool(np, "ad-adv7343-sd-config-dac-out-1");
+
+ pdata->sd_config.sd_dac_out2 =
+ of_property_read_bool(np, "ad-adv7343-sd-config-dac-out-2");
+
+ decoder->pdata = pdata;
+ }
+}
+#else
+#define adv7343_of_match NULL
+
+static void adv7343_get_pdata(struct i2c_client *client,
+ struct adv7343_state *decoder)
+{
+ decoder->pdata = client->dev.platform_data;
+}
+#endif
+
static int adv7343_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@@ -426,8 +497,7 @@ static int adv7343_probe(struct i2c_client *client,
if (state == NULL)
return -ENOMEM;
- /* Copy board specific information here */
- state->pdata = client->dev.platform_data;
+ adv7343_get_pdata(client, state);
state->reg00 = 0x80;
state->reg01 = 0x00;
@@ -496,6 +566,7 @@ MODULE_DEVICE_TABLE(i2c, adv7343_id);
static struct i2c_driver adv7343_driver = {
.driver = {
+ .of_match_table = adv7343_of_match,
.owner = THIS_MODULE,
.name = "adv7343",
},
--
1.7.4.1
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