[PATCH v4 45/49] adv7604: Add DT support

Laurent Pinchart
2014-04-17T14:13:16Z

Parse the device tree node to populate platform data. Only the ADV7611
is currently support with DT.

Cc: devicetree@vger.kernel.org
Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
---
.../devicetree/bindings/media/i2c/adv7604.txt | 57 +++++++++++++++
drivers/media/i2c/adv7604.c | 80 ++++++++++++++++++----
2 files changed, 123 insertions(+), 14 deletions(-)
create mode 100644 Documentation/devicetree/bindings/media/i2c/adv7604.txt

diff --git a/Documentation/devicetree/bindings/media/i2c/adv7604.txt b/Documentation/devicetree/bindings/media/i2c/adv7604.txt
new file mode 100644
index 0000000..2efb48f
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/adv7604.txt
@@ -0,0 +1,57 @@
+* Analog Devices ADV7604/11 video decoder with HDMI receiver
+
+The ADV7604 and ADV7611 are multiformat video decoders with an integrated HDMI
+receiver. The ADV7604 has four multiplexed HDMI inputs and one analog input,
+and the ADV7611 has one HDMI input and no analog input.
+
+These device tree bindings support the ADV7611 only at the moment.
+
+Required Properties:
+
+ - compatible: Must contain one of the following
+ - "adi,adv7611" for the ADV7611
+
+ - reg: I2C slave address
+
+ - hpd-gpios: References to the GPIOs that control the HDMI hot-plug
+ detection pins, one per HDMI input. The active flag indicates the GPIO
+ level that enables hot-plug detection.
+
+The device node must contain one 'port' child node per device input and output
+port, in accordance with the video interface bindings defined in
+Documentation/devicetree/bindings/media/video-interfaces.txt. The port nodes
+are numbered as follows.
+
+ Port ADV7611
+------------------------------------------------------------
+ HDMI 0
+ Digital output 1
+
+The digital output port node must contain at least one endpoint.
+
+Optional Properties:
+
+ - reset-gpios: Reference to the GPIO connected to the device's reset pin.
+
+Example:
+
+ hdmi_receiver@4c {
+ compatible = "adi,adv7611";
+ reg = <0x4c>;
+
+ reset-gpios = <&ioexp 0 GPIO_ACTIVE_LOW>;
+ hpd-gpios = <&ioexp 2 GPIO_ACTIVE_HIGH>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ };
+ port@1 {
+ reg = <1>;
+ hdmi_in: endpoint {
+ remote-endpoint = <&ccdc_in>;
+ };
+ };
+ };
diff --git a/drivers/media/i2c/adv7604.c b/drivers/media/i2c/adv7604.c
index 342d73d..061794e 100644
--- a/drivers/media/i2c/adv7604.c
+++ b/drivers/media/i2c/adv7604.c
@@ -2663,13 +2663,58 @@ static const struct adv7604_chip_info adv7604_chip_info[] = {
},
};

+static struct i2c_device_id adv7604_i2c_id[] = {
+ { "adv7604", (kernel_ulong_t)&adv7604_chip_info[ADV7604] },
+ { "adv7611", (kernel_ulong_t)&adv7604_chip_info[ADV7611] },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, adv7604_i2c_id);
+
+static struct of_device_id adv7604_of_id[] = {
+ { .compatible = "adi,adv7611", .data = &adv7604_chip_info[ADV7611] },
+ { }
+};
+MODULE_DEVICE_TABLE(of, adv7604_of_id);
+
+static int adv7604_parse_dt(struct adv7604_state *state)
+{
+ /* Disable the interrupt for now as no DT-based board uses it. */
+ state->pdata.int1_config = ADV7604_INT1_CONFIG_DISABLED;
+
+ /* Use the default I2C addresses. */
+ state->pdata.i2c_addresses[ADV7604_PAGE_AVLINK] = 0x42;
+ state->pdata.i2c_addresses[ADV7604_PAGE_CEC] = 0x40;
+ state->pdata.i2c_addresses[ADV7604_PAGE_INFOFRAME] = 0x3e;
+ state->pdata.i2c_addresses[ADV7604_PAGE_ESDP] = 0x38;
+ state->pdata.i2c_addresses[ADV7604_PAGE_DPP] = 0x3c;
+ state->pdata.i2c_addresses[ADV7604_PAGE_AFE] = 0x26;
+ state->pdata.i2c_addresses[ADV7604_PAGE_REP] = 0x32;
+ state->pdata.i2c_addresses[ADV7604_PAGE_EDID] = 0x36;
+ state->pdata.i2c_addresses[ADV7604_PAGE_HDMI] = 0x34;
+ state->pdata.i2c_addresses[ADV7604_PAGE_TEST] = 0x30;
+ state->pdata.i2c_addresses[ADV7604_PAGE_CP] = 0x22;
+ state->pdata.i2c_addresses[ADV7604_PAGE_VDP] = 0x24;
+
+ /* Hardcode the remaining platform data fields. */
+ state->pdata.disable_pwrdnb = 0;
+ state->pdata.disable_cable_det_rst = 0;
+ state->pdata.default_input = -1;
+ state->pdata.blank_data = 1;
+ state->pdata.op_656_range = 1;
+ state->pdata.alt_data_sat = 1;
+ state->pdata.insert_av_codes = 1;
+ state->pdata.op_format_mode_sel = ADV7604_OP_FORMAT_MODE0;
+ state->pdata.bus_order = ADV7604_BUS_ORDER_RGB;
+
+ return 0;
+}
+
static int adv7604_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
static const struct v4l2_dv_timings cea640x480 =
V4L2_DV_BT_CEA_640X480P59_94;
struct adv7604_state *state;
- struct adv7604_platform_data *pdata = client->dev.platform_data;
struct v4l2_ctrl_handler *hdl;
struct v4l2_subdev *sd;
unsigned int i;
@@ -2688,19 +2733,32 @@ static int adv7604_probe(struct i2c_client *client,
return -ENOMEM;
}

- state->info = &adv7604_chip_info[id->driver_data];
state->i2c_clients[ADV7604_PAGE_IO] = client;

/* initialize variables */
state->restart_stdi_once = true;
state->selected_input = ~0;

- /* platform data */
- if (!pdata) {
+ if (IS_ENABLED(CONFIG_OF) && client->dev.of_node) {
+ const struct of_device_id *oid;
+
+ oid = of_match_node(adv7604_of_id, client->dev.of_node);
+ state->info = oid->data;
+
+ err = adv7604_parse_dt(state);
+ if (err < 0) {
+ v4l_err(client, "DT parsing error\n");
+ return err;
+ }
+ } else if (client->dev.platform_data) {
+ struct adv7604_platform_data *pdata = client->dev.platform_data;
+
+ state->info = (const struct adv7604_chip_info *)id->driver_data;
+ state->pdata = *pdata;
+ } else {
v4l_err(client, "No platform data!\n");
return -ENODEV;
}
- state->pdata = *pdata;

/* Request GPIOs. */
for (i = 0; i < state->info->num_dv_ports; ++i) {
@@ -2799,7 +2857,7 @@ static int adv7604_probe(struct i2c_client *client,
continue;

state->i2c_clients[i] =
- adv7604_dummy_client(sd, pdata->i2c_addresses[i],
+ adv7604_dummy_client(sd, state->pdata.i2c_addresses[i],
0xf2 + i);
if (state->i2c_clients[i] == NULL) {
err = -ENOMEM;
@@ -2873,21 +2931,15 @@ static int adv7604_remove(struct i2c_client *client)

/* ----------------------------------------------------------------------- */

-static struct i2c_device_id adv7604_id[] = {
- { "adv7604", ADV7604 },
- { "adv7611", ADV7611 },
- { }
-};
-MODULE_DEVICE_TABLE(i2c, adv7604_id);
-
static struct i2c_driver adv7604_driver = {
.driver = {
.owner = THIS_MODULE,
.name = "adv7604",
+ .of_match_table = of_match_ptr(adv7604_of_id),
},
.probe = adv7604_probe,
.remove = adv7604_remove,
- .id_table = adv7604_id,
+ .id_table = adv7604_i2c_id,
};

module_i2c_driver(adv7604_driver);
--
1.8.3.2