[media] media: i2c: adv7343: add OF support

add OF support for the adv7343 driver.

Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

diff --git a/Documentation/devicetree/bindings/media/i2c/adv7343.txt b/Documentation/devicetree/bindings/media/i2c/adv7343.txt
new file mode 100644 (file)
index 0000000..5653bc2
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/adv7343.txt
@@ -0,0 +1,48 @@
+* 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.
+
+Required Properties :
+- compatible: Must be "adi,adv7343"
+
+Optional Properties :
+- adi,power-mode-sleep-mode: on enable the current consumption is reduced to
+                             micro ampere level. All DACs and the internal PLL
+                             circuit are disabled.
+- adi,power-mode-pll-ctrl: PLL and oversampling control. This control allows
+                          internal PLL 1 circuit to be powered down and the
+                          oversampling to be switched off.
+- ad,adv7343-power-mode-dac: array configuring the power on/off DAC's 1..6,
+                             0 = OFF and 1 = ON, Default value when this
+                             property is not specified is <0 0 0 0 0 0>.
+- ad,adv7343-sd-config-dac-out: array configure SD DAC Output's 1 and 2, 0 = OFF
+                                and 1 = ON, Default value when this property is
+                                not specified is <0 0>.
+
+Example:
+
+i2c0@1c22000 {
+       ...
+       ...
+
+       adv7343@2a {
+               compatible = "adi,adv7343";
+               reg = <0x2a>;
+
+               port {
+                       adv7343_1: endpoint {
+                                       adi,power-mode-sleep-mode;
+                                       adi,power-mode-pll-ctrl;
+                                       /* Use DAC1..3, DAC6 */
+                                       adi,dac-enable = <1 1 1 0 0 1>;
+                                       /* Use SD DAC output 1 */
+                                       adi,sd-dac-enable = <1 0>;
+                       };
+               };
+       };
+       ...
+};

diff --git a/drivers/media/i2c/adv7343.c b/drivers/media/i2c/adv7343.c
index f0238fb..aeb56c5 100644 (file)
--- a/drivers/media/i2c/adv7343.c
+++ b/drivers/media/i2c/adv7343.c
@@ -30,6 +30,7 @@
 #include <media/v4l2-async.h>
 #include <media/v4l2-device.h>
 #include <media/v4l2-ctrls.h>
+#include <media/v4l2-of.h>
 
 #include "adv7343_regs.h"
 
@@ -399,6 +400,40 @@ static int adv7343_initialize(struct v4l2_subdev *sd)
        return err;
 }
 
+static struct adv7343_platform_data *
+adv7343_get_pdata(struct i2c_client *client)
+{
+       struct adv7343_platform_data *pdata;
+       struct device_node *np;
+
+       if (!IS_ENABLED(CONFIG_OF) || !client->dev.of_node)
+               return client->dev.platform_data;
+
+       np = v4l2_of_get_next_endpoint(client->dev.of_node, NULL);
+       if (!np)
+               return NULL;
+
+       pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
+       if (!pdata)
+               goto done;
+
+       pdata->mode_config.sleep_mode =
+                       of_property_read_bool(np, "adi,power-mode-sleep-mode");
+
+       pdata->mode_config.pll_control =
+                       of_property_read_bool(np, "adi,power-mode-pll-ctrl");
+
+       of_property_read_u32_array(np, "adi,dac-enable",
+                                  pdata->mode_config.dac, 6);
+
+       of_property_read_u32_array(np, "adi,sd-dac-enable",
+                                  pdata->sd_config.sd_dac_out, 2);
+
+done:
+       of_node_put(np);
+       return pdata;
+}
+
 static int adv7343_probe(struct i2c_client *client,
                                const struct i2c_device_id *id)
 {
@@ -417,7 +452,7 @@ static int adv7343_probe(struct i2c_client *client,
                return -ENOMEM;
 
        /* Copy board specific information here */
-       state->pdata = client->dev.platform_data;
+       state->pdata = adv7343_get_pdata(client);
 
        state->reg00    = 0x80;
        state->reg01    = 0x00;
@@ -483,8 +518,17 @@ static const struct i2c_device_id adv7343_id[] = {
 
 MODULE_DEVICE_TABLE(i2c, adv7343_id);
 
+#if IS_ENABLED(CONFIG_OF)
+static const struct of_device_id adv7343_of_match[] = {
+       {.compatible = "adi,adv7343", },
+       { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, adv7343_of_match);
+#endif
+
 static struct i2c_driver adv7343_driver = {
        .driver = {
+               .of_match_table = of_match_ptr(adv7343_of_match),
                .owner  = THIS_MODULE,
                .name   = "adv7343",
        },