Hi Laurent,
On 01-04-2016 18:10, Laurent Pinchart wrote:
> Hi Jose,
>
> Thank you for the patch.
>
> On Monday 28 Mar 2016 15:36:09 Jose Abreu wrote:
>> This patch adds audio support for the ADV7511 HDMI transmitter
>> using ALSA SoC.
>>
>> The code was ported from Analog Devices linux tree from
>> commit 1770c4a1e32b ("Merge remote-tracking branch
>> 'xilinx/master' into xcomm_zynq"), which is available at:
>> - https://github.com/analogdevicesinc/linux/
>>
>> The main core file was renamed from adv7511.c to adv7511_core.c
>> so that audio and video compile into a single adv7511.ko module
>> and to keep up with Analog Devices kernel tree.
>>
>> The audio can be disabled using menu-config so it is possible
>> to use only video mode.
>>
>> The HDMI mode is automatically started at boot and the audio
>> (when enabled) registers as a codec into ALSA.
>>
>> SPDIF DAI format was also added to ASoC as it is required
>> by adv7511 audio.
>>
>> Signed-off-by: Jose Abreu <joabreu@xxxxxxxxxxxx>
>> ---
>>
>> No changes v1 -> v2.
>>
>> drivers/gpu/drm/i2c/Kconfig | 11 +
>> drivers/gpu/drm/i2c/Makefile | 2 +
>> drivers/gpu/drm/i2c/adv7511.c | 1024 -------------------------------
>> drivers/gpu/drm/i2c/adv7511.h | 41 ++
>> drivers/gpu/drm/i2c/adv7511_audio.c | 310 +++++++++++
>> drivers/gpu/drm/i2c/adv7511_core.c | 1005 ++++++++++++++++++++++++++++++
> Please use git-format-patch -M to detect renames if you send a new version of
> this series, it will help with review.
Ok, will do that in next version.
>> include/sound/soc-dai.h | 1 +
>> 7 files changed, 1370 insertions(+), 1024 deletions(-)
>> delete mode 100644 drivers/gpu/drm/i2c/adv7511.c
>> create mode 100644 drivers/gpu/drm/i2c/adv7511_audio.c
>> create mode 100644 drivers/gpu/drm/i2c/adv7511_core.c
> [snip]
>
>> diff --git a/drivers/gpu/drm/i2c/adv7511_core.c
>> b/drivers/gpu/drm/i2c/adv7511_core.c new file mode 100644
>> index 0000000..d54256a
>> --- /dev/null
>> +++ b/drivers/gpu/drm/i2c/adv7511_core.c
> [snip]
>
>> +static int adv7511_probe(struct i2c_client *i2c, const struct i2c_device_id
>> *id) +{
>> + struct adv7511_link_config link_config;
>> + struct adv7511 *adv7511;
>> + struct device *dev = &i2c->dev;
>> + unsigned int val;
>> + int ret;
>> +
>> + if (!dev->of_node)
>> + return -EINVAL;
>> +
>> + adv7511 = devm_kzalloc(dev, sizeof(*adv7511), GFP_KERNEL);
>> + if (!adv7511)
>> + return -ENOMEM;
>> +
>> + adv7511->powered = false;
>> + adv7511->status = connector_status_disconnected;
>> +
>> + ret = adv7511_parse_dt(dev->of_node, &link_config);
>> + if (ret)
>> + return ret;
>> +
>> + /*
>> + * The power down GPIO is optional. If present, toggle it from active to
>> + * inactive to wake up the encoder.
>> + */
>> + adv7511->gpio_pd = devm_gpiod_get_optional(dev, "pd", GPIOD_OUT_HIGH);
>> + if (IS_ERR(adv7511->gpio_pd))
>> + return PTR_ERR(adv7511->gpio_pd);
>> +
>> + if (adv7511->gpio_pd) {
>> + mdelay(5);
>> + gpiod_set_value_cansleep(adv7511->gpio_pd, 0);
>> + }
>> +
>> + adv7511->regmap = devm_regmap_init_i2c(i2c, &adv7511_regmap_config);
>> + if (IS_ERR(adv7511->regmap))
>> + return PTR_ERR(adv7511->regmap);
>> +
>> + ret = regmap_read(adv7511->regmap, ADV7511_REG_CHIP_REVISION, &val);
>> + if (ret)
>> + return ret;
>> + dev_dbg(dev, "Rev. %d\n", val);
>> +
>> + ret = regmap_register_patch(adv7511->regmap, adv7511_fixed_registers,
>> + ARRAY_SIZE(adv7511_fixed_registers));
>> + if (ret)
>> + return ret;
>> +
>> + regmap_write(adv7511->regmap, ADV7511_REG_EDID_I2C_ADDR, edid_i2c_addr);
>> + regmap_write(adv7511->regmap, ADV7511_REG_PACKET_I2C_ADDR,
>> + packet_i2c_addr);
>> + regmap_write(adv7511->regmap, ADV7511_REG_CEC_I2C_ADDR, cec_i2c_addr);
>> + adv7511_packet_disable(adv7511, 0xffff);
>> +
>> + adv7511->i2c_main = i2c;
>> + adv7511->i2c_edid = i2c_new_dummy(i2c->adapter, edid_i2c_addr >> 1);
>> + if (!adv7511->i2c_edid)
>> + return -ENOMEM;
>> +
>> + if (i2c->irq) {
>> + init_waitqueue_head(&adv7511->wq);
>> +
>> + ret = devm_request_threaded_irq(dev, i2c->irq, NULL,
>> + adv7511_irq_handler,
>> + IRQF_ONESHOT, dev_name(dev),
>> + adv7511);
>> + if (ret)
>> + goto err_i2c_unregister_device;
>> + }
>> +
>> + /* CEC is unused for now */
>> + regmap_write(adv7511->regmap, ADV7511_REG_CEC_CTRL,
>> + ADV7511_CEC_CTRL_POWER_DOWN);
>> +
>> + adv7511_power_off(adv7511);
>> +
>> + i2c_set_clientdata(i2c, adv7511);
>> +
>> +#ifdef CONFIG_DRM_I2C_ADV7511_AUDIO
>> + adv7511_audio_init(&i2c->dev);
>> +#endif
> Shouldn't we condition this to the audio channel being somehow described in DT
> ? If a board doesn't route audio signals to the ADV7511 audio input, there's
> no need to register an audio codec.
I can do this but the audio is already conditionally compiled using menuconfig.
Is it really necessary to add this extra layer of condition?
>> +
>> + adv7511_set_link_config(adv7511, &link_config);
>> +
>> + /* Enable HDMI mode */
>> + regmap_update_bits(adv7511->regmap, ADV7511_REG_HDCP_HDMI_CFG,
>> + ADV7511_HDMI_CFG_MODE_MASK,
>> + ADV7511_HDMI_CFG_MODE_HDMI);
>> +
>> + return 0;
>> +
>> +err_i2c_unregister_device:
>> + i2c_unregister_device(adv7511->i2c_edid);
>> +
>> + return ret;
>> +}
Best regards,
Jose Miguel Abreu
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