Parse the device tree node to populate platform data.
Cc: devicetree@xxxxxxxxxxxxxxx
Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
---
.../devicetree/bindings/media/i2c/adv7604.txt | 56 ++++++++++++
drivers/media/i2c/adv7604.c | 101 ++++++++++++++++++---
2 files changed, 143 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..0845c50
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/adv7604.txt
@@ -0,0 +1,56 @@
+* 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.
+
+Required Properties:
+
+ - compatible: Must contain one of the following
+ - "adi,adv7604" for the ADV7604
+ - "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.
+
+Optional Properties:
+
+ - reset-gpios: Reference to the GPIO connected to the device's reset pin.
+
+ - adi,default-input: Index of the input to be configured as default. Valid
+ values are 0..5 for the ADV7604 and 0 for the ADV7611.
+
+ - adi,disable-power-down: Boolean property. When set forces the device to
+ ignore the power-down pin. The property is valid for the ADV7604 only as
+ the ADV7611 has no power-down pin.
+
+ - adi,disable-cable-reset: Boolean property. When set disables the HDMI
+ receiver automatic reset when the HDMI cable is unplugged.
+
+Example:
+
+ hdmi_receiver@4c {
+ compatible = "adi,adv7611";
+ reg = <0x4c>;
+
+ reset-gpios = <&ioexp 0 GPIO_ACTIVE_LOW>;
+ hpd-gpios = <&ioexp 2 GPIO_ACTIVE_HIGH>;
+
+ adi,default-input = <0>;
+
+ #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 e586c1c..cd8a2dc 100644
--- a/drivers/media/i2c/adv7604.c
+++ b/drivers/media/i2c/adv7604.c
@@ -32,6 +32,7 @@
#include <linux/i2c.h>
#include <linux/kernel.h>
#include <linux/module.h>
+#include <linux/of_gpio.h>
#include <linux/slab.h>
#include <linux/v4l2-dv-timings.h>
#include <linux/videodev2.h>
@@ -2641,13 +2642,83 @@ 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,adv7604", .data = &adv7604_chip_info[ADV7604] },
+ { .compatible = "adi,adv7611", .data = &adv7604_chip_info[ADV7611] },
+ { }
+};
+MODULE_DEVICE_TABLE(of, adv7604_of_id);
+
+static int adv7604_parse_dt(struct adv7604_state *state)
+{
+ struct device_node *np;
+ unsigned int i;
+ int ret;
+
+ np = state->i2c_clients[ADV7604_PAGE_IO]->dev.of_node;
+ state->info = of_match_node(adv7604_of_id, np)->data;
+
+ state->pdata.disable_pwrdnb =
+ of_property_read_bool(np, "adi,disable-power-down");
+ state->pdata.disable_cable_det_rst =
+ of_property_read_bool(np, "adi,disable-cable-reset");
+
+ ret = of_property_read_u32(np, "adi,default-input",
+ &state->pdata.default_input);
+ if (ret < 0)
+ state->pdata.default_input = -1;
+
+ for (i = 0; i < state->info->num_dv_ports; ++i) {
+ enum of_gpio_flags flags;
+
+ state->pdata.hpd_gpio[i] =
+ of_get_named_gpio_flags(np, "hpd-gpios", i, &flags);
+ if (IS_ERR_VALUE(state->pdata.hpd_gpio[i]))
+ continue;
+
+ state->pdata.hpd_gpio_low[i] = flags == OF_GPIO_ACTIVE_LOW;
+ }
+
+ /* 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;
+
+ /* HACK: Hardcode the remaining platform data fields. */
+ 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;
+
+ 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;
@@ -2666,19 +2737,27 @@ 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 (client->dev.of_node) {
+ 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) {
@@ -2786,7 +2865,7 @@ 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;
@@ -2860,21 +2939,15 @@ 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
--
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