From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.4.pengutronix.de ([92.198.50.35]:57202 "EHLO metis.ext.4.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934545AbcCNPXj (ORCPT ); Mon, 14 Mar 2016 11:23:39 -0400 From: Lucas Stach To: Mauro Carvalho Chehab , linux-media@vger.kernel.org Cc: kernel@pengutronix.de, patchwork-lst@pengutronix.de Subject: [PATCH v3 4/9] [media] tvp5150: fix standard autodetection Date: Mon, 14 Mar 2016 16:23:32 +0100 Message-Id: <1457969017-4088-4-git-send-email-l.stach@pengutronix.de> In-Reply-To: <1457969017-4088-1-git-send-email-l.stach@pengutronix.de> References: <1457969017-4088-1-git-send-email-l.stach@pengutronix.de> Sender: linux-media-owner@vger.kernel.org List-ID: From: Philipp Zabel Make sure to not overwrite decoder->norm when setting the standard in hardware, but only when instructed by V4L2 API calls. Signed-off-by: Philipp Zabel Signed-off-by: Lucas Stach --- drivers/media/i2c/tvp5150.c | 56 +++++++++++++++++++++++++-------------------- 1 file changed, 31 insertions(+), 25 deletions(-) diff --git a/drivers/media/i2c/tvp5150.c b/drivers/media/i2c/tvp5150.c index f6720d1d09ea..21d044b564ad 100644 --- a/drivers/media/i2c/tvp5150.c +++ b/drivers/media/i2c/tvp5150.c @@ -703,8 +703,6 @@ static int tvp5150_set_std(struct v4l2_subdev *sd, v4l2_std_id std) struct tvp5150 *decoder = to_tvp5150(sd); int fmt = 0; - decoder->norm = std; - /* First tests should be against specific std */ if (std == V4L2_STD_NTSC_443) { @@ -741,13 +739,37 @@ static int tvp5150_s_std(struct v4l2_subdev *sd, v4l2_std_id std) else decoder->rect.height = TVP5150_V_MAX_OTHERS; + decoder->norm = std; return tvp5150_set_std(sd, std); } +static v4l2_std_id tvp5150_read_std(struct v4l2_subdev *sd) +{ + int val = tvp5150_read(sd, TVP5150_STATUS_REG_5); + + switch (val & 0x0F) { + case 0x01: + return V4L2_STD_NTSC; + case 0x03: + return V4L2_STD_PAL; + case 0x05: + return V4L2_STD_PAL_M; + case 0x07: + return V4L2_STD_PAL_N | V4L2_STD_PAL_Nc; + case 0x09: + return V4L2_STD_NTSC_443; + case 0xb: + return V4L2_STD_SECAM; + default: + return V4L2_STD_UNKNOWN; + } +} + static int tvp5150_reset(struct v4l2_subdev *sd, u32 val) { struct tvp5150 *decoder = to_tvp5150(sd); + v4l2_std_id std; /* Initializes TVP5150 to its default values */ tvp5150_write_inittab(sd, tvp5150_init_default); @@ -783,7 +805,13 @@ static int tvp5150_reset(struct v4l2_subdev *sd, u32 val) /* Initialize image preferences */ v4l2_ctrl_handler_setup(&decoder->hdl); - tvp5150_set_std(sd, decoder->norm); + if (decoder->norm == V4L2_STD_ALL) + std = tvp5150_read_std(sd); + else + std = decoder->norm; + + /* Disable autoswitch mode */ + tvp5150_set_std(sd, std); return 0; }; @@ -808,28 +836,6 @@ static int tvp5150_s_ctrl(struct v4l2_ctrl *ctrl) return -EINVAL; } -static v4l2_std_id tvp5150_read_std(struct v4l2_subdev *sd) -{ - int val = tvp5150_read(sd, TVP5150_STATUS_REG_5); - - switch (val & 0x0F) { - case 0x01: - return V4L2_STD_NTSC; - case 0x03: - return V4L2_STD_PAL; - case 0x05: - return V4L2_STD_PAL_M; - case 0x07: - return V4L2_STD_PAL_N | V4L2_STD_PAL_Nc; - case 0x09: - return V4L2_STD_NTSC_443; - case 0xb: - return V4L2_STD_SECAM; - default: - return V4L2_STD_UNKNOWN; - } -} - static int tvp5150_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_mbus_code_enum *code) -- 2.7.0