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SubjectRe: [PATCH 4/4 v2] drm/bridge: adv7511: Initialize audio packet on adv7533
From
Date
Hi,

On 8/30/2016 5:11 AM, John Stultz wrote:
> From: Andy Green <andy.green@linaro.org>
>
> Set the initial audio packet settings to allow the audio
> driver to work.
>
> Cc: David Airlie <airlied@linux.ie>
> Cc: Archit Taneja <architt@codeaurora.org>
> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> Cc: Wolfram Sang <wsa+renesas@sang-engineering.com>
> Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
> Cc: "Ville Syrjälä" <ville.syrjala@linux.intel.com>
> Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
> Cc: Andy Green <andy@warmcat.com>
> Cc: Dave Long <dave.long@linaro.org>
> Cc: Guodong Xu <guodong.xu@linaro.org>
> Cc: Zhangfei Gao <zhangfei.gao@linaro.org>
> Cc: Mark Brown <broonie@kernel.org>
> Cc: Lars-Peter Clausen <lars@metafoo.de>
> Cc: Jose Abreu <joabreu@synopsys.com>
> Cc: dri-devel@lists.freedesktop.org
> Signed-off-by: Andy Green <andy.green@linaro.org>
> [jstultz: Forward ported to mainline, changed to use register
> names rather then hex values, and removed config values set by
> audio driver.]
> Signed-off-by: John Stultz <john.stultz@linaro.org>
> ---
> drivers/gpu/drm/bridge/adv7511/adv7533.c | 22 ++++++++++++++++++++++
> 1 file changed, 22 insertions(+)
>
> diff --git a/drivers/gpu/drm/bridge/adv7511/adv7533.c b/drivers/gpu/drm/bridge/adv7511/adv7533.c
> index 6798ecf..cced7c9 100644
> --- a/drivers/gpu/drm/bridge/adv7511/adv7533.c
> +++ b/drivers/gpu/drm/bridge/adv7511/adv7533.c
> @@ -104,6 +104,28 @@ void adv7533_dsi_power_on(struct adv7511 *adv)
> /* disable test mode */
> regmap_write(adv->regmap_cec, 0x55, 0x00);
>
> + /* hide Audio infoframe updates */
> + regmap_update_bits(adv->regmap, ADV7511_REG_INFOFRAME_UPDATE,
> + BIT(5), BIT(5));
> + /* enable N/CTS, enable Audio sample packets */
> + regmap_update_bits(adv->regmap, ADV7511_REG_PACKET_ENABLE1,
> + BIT(5), BIT(5));
> + /* enable N/CTS */
> + regmap_update_bits(adv->regmap, ADV7511_REG_PACKET_ENABLE1,
> + BIT(6), BIT(6));
> + /* not copyrighted */
> + regmap_update_bits(adv->regmap, ADV7511_REG_AUDIO_CFG1,
> + BIT(5), BIT(5));
> + /* enable audio infoframes */
> + regmap_update_bits(adv->regmap, ADV7511_REG_PACKET_ENABLE1,
> + BIT(3), BIT(3));
> + /* AV mute disable */
> + regmap_update_bits(adv->regmap, ADV7511_REG_GC(0),
> + BIT(7) | BIT(6), BIT(7));
> + /* use Audio infoframe updated info */
> + regmap_update_bits(adv->regmap, ADV7511_REG_GC(1),
> + BIT(5), 0);
> +

Wouldn't these writes be needed by ADV751x chips too? These seem to
belong to the main ADV75xx regmap. These should probably be a separate
func in adv7511_audio.c or adv7511_drv.c, and it should be called in
adv7511_power_on, so that ADV751x chips can utilize this too.

Thanks,
Archit

> regmap_register_patch(adv->regmap_cec, adv7533_cec_fixed_registers,
> ARRAY_SIZE(adv7533_cec_fixed_registers));
> }
>

--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project

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