From patchwork Wed Aug 28 14:24:13 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans Verkuil X-Patchwork-Id: 13781359 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E2DD0C5AE5A for ; Wed, 28 Aug 2024 14:26:36 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6AF7310E541; Wed, 28 Aug 2024 14:26:36 +0000 (UTC) Received: from nyc.source.kernel.org (nyc.source.kernel.org [147.75.193.91]) by gabe.freedesktop.org (Postfix) with ESMTPS id B5DB010E541 for ; Wed, 28 Aug 2024 14:26:29 +0000 (UTC) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id 0F3DEA40DBE; Wed, 28 Aug 2024 14:26:22 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 97E72C4CEE3; Wed, 28 Aug 2024 14:26:27 +0000 (UTC) From: Hans Verkuil To: linux-media@vger.kernel.org Cc: Maxime Ripard , dri-devel@lists.freedesktop.org, Dave Stevenson , Hans Verkuil Subject: [PATCH 7/7] media: i2c: tda1997x: export InfoFrames to debugfs Date: Wed, 28 Aug 2024 16:24:13 +0200 Message-ID: X-Mailer: git-send-email 2.43.0 In-Reply-To: References: MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Export InfoFrames to debugfs. Signed-off-by: Hans Verkuil --- drivers/media/i2c/tda1997x.c | 50 ++++++++++++++++++++++++++++++++++-- 1 file changed, 48 insertions(+), 2 deletions(-) diff --git a/drivers/media/i2c/tda1997x.c b/drivers/media/i2c/tda1997x.c index 3b7e5ff5b010..2b33fdecb2d2 100644 --- a/drivers/media/i2c/tda1997x.c +++ b/drivers/media/i2c/tda1997x.c @@ -259,6 +259,10 @@ struct tda1997x_state { struct v4l2_ctrl *detect_tx_5v_ctrl; struct v4l2_ctrl *rgb_quantization_range_ctrl; + /* debugfs */ + struct dentry *debugfs_dir; + struct v4l2_debugfs_if *infoframes; + /* audio */ u8 audio_ch_alloc; int audio_samplerate; @@ -1263,7 +1267,7 @@ tda1997x_parse_infoframe(struct tda1997x_state *state, u16 addr) { struct v4l2_subdev *sd = &state->sd; union hdmi_infoframe frame; - u8 buffer[40] = { 0 }; + u8 buffer[V4L2_DEBUGFS_IF_MAX_LEN] = { 0 }; u8 reg; int len, err; @@ -1938,11 +1942,44 @@ static const struct v4l2_subdev_pad_ops tda1997x_pad_ops = { * v4l2_subdev_core_ops */ +static ssize_t +tda1997x_debugfs_if_read(u32 type, void *priv, struct file *filp, char __user *ubuf, size_t count, loff_t *ppos) +{ + struct v4l2_subdev *sd = priv; + u8 buffer[V4L2_DEBUGFS_IF_MAX_LEN] = {}; + int addr, len; + + switch (type) { + case V4L2_DEBUGFS_IF_AVI: + addr = AVI_IF; + break; + case V4L2_DEBUGFS_IF_AUDIO: + addr = AUD_IF; + break; + case V4L2_DEBUGFS_IF_SPD: + addr = SPD_IF; + break; + default: + return 0; + } + + /* read data */ + len = io_readn(sd, addr, sizeof(buffer), buffer); + if (len > 0) { + len = buffer[2] + 4; + if (len > V4L2_DEBUGFS_IF_MAX_LEN) + len = -EIO; + } + if (len > 0) + len = simple_read_from_buffer(ubuf, count, ppos, buffer, len); + return len < 0 ? 0 : len; +} + static int tda1997x_log_infoframe(struct v4l2_subdev *sd, int addr) { struct tda1997x_state *state = to_state(sd); union hdmi_infoframe frame; - u8 buffer[40] = { 0 }; + u8 buffer[V4L2_DEBUGFS_IF_MAX_LEN] = {}; int len, err; /* read data */ @@ -2791,6 +2828,12 @@ static int tda1997x_probe(struct i2c_client *client) goto err_free_media; } + state->debugfs_dir = debugfs_create_dir(sd->name, v4l2_debugfs_root()); + state->infoframes = v4l2_debugfs_if_alloc(state->debugfs_dir, + V4L2_DEBUGFS_IF_AVI | V4L2_DEBUGFS_IF_AUDIO | + V4L2_DEBUGFS_IF_SPD, sd, + tda1997x_debugfs_if_read); + return 0; err_free_media: @@ -2815,6 +2858,9 @@ static void tda1997x_remove(struct i2c_client *client) struct tda1997x_state *state = to_state(sd); struct tda1997x_platform_data *pdata = &state->pdata; + v4l2_debugfs_if_free(state->infoframes); + debugfs_remove_recursive(state->debugfs_dir); + if (pdata->audout_format) { mutex_destroy(&state->audio_lock); }