From patchwork Fri Oct 19 15:50:24 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marco Felsch X-Patchwork-Id: 10649699 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BFF3114E2 for ; Fri, 19 Oct 2018 15:50:45 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AE9AE28498 for ; Fri, 19 Oct 2018 15:50:45 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A318B284A3; Fri, 19 Oct 2018 15:50:45 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4DB16284AF for ; Fri, 19 Oct 2018 15:50:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727738AbeJSX5Y (ORCPT ); Fri, 19 Oct 2018 19:57:24 -0400 Received: from metis.ext.pengutronix.de ([85.220.165.71]:41499 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727724AbeJSX5X (ORCPT ); Fri, 19 Oct 2018 19:57:23 -0400 Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1gDX2r-0005FY-MJ; Fri, 19 Oct 2018 17:50:37 +0200 Received: from mfe by dude.hi.pengutronix.de with local (Exim 4.91) (envelope-from ) id 1gDX2p-0000aM-QS; Fri, 19 Oct 2018 17:50:35 +0200 From: Marco Felsch To: mchehab@kernel.org, sakari.ailus@linux.intel.com Cc: akinobu.mita@gmail.com, enrico.scholz@sigma-chemnitz.de, linux-media@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 1/4] media: mt9m111: add s_stream callback Date: Fri, 19 Oct 2018 17:50:24 +0200 Message-Id: <20181019155027.28682-2-m.felsch@pengutronix.de> X-Mailer: git-send-email 2.19.0 In-Reply-To: <20181019155027.28682-1-m.felsch@pengutronix.de> References: <20181019155027.28682-1-m.felsch@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: mfe@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-media@vger.kernel.org Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add callback to check if we are already streaming. Now other callbacks can check the state and return -EBUSY if we already streaming. Signed-off-by: Marco Felsch --- drivers/media/i2c/mt9m111.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/media/i2c/mt9m111.c b/drivers/media/i2c/mt9m111.c index efda1aa95ca0..78d08a81e0e2 100644 --- a/drivers/media/i2c/mt9m111.c +++ b/drivers/media/i2c/mt9m111.c @@ -217,6 +217,7 @@ struct mt9m111 { int power_count; const struct mt9m111_datafmt *fmt; int lastpage; /* PageMap cache value */ + bool is_streaming; #ifdef CONFIG_MEDIA_CONTROLLER struct media_pad pad; #endif @@ -880,6 +881,14 @@ static int mt9m111_enum_mbus_code(struct v4l2_subdev *sd, return 0; } +static int mt9m111_s_stream(struct v4l2_subdev *sd, int enable) +{ + struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev); + + mt9m111->is_streaming = !!enable; + return 0; +} + static int mt9m111_g_mbus_config(struct v4l2_subdev *sd, struct v4l2_mbus_config *cfg) { @@ -893,6 +902,7 @@ static int mt9m111_g_mbus_config(struct v4l2_subdev *sd, static const struct v4l2_subdev_video_ops mt9m111_subdev_video_ops = { .g_mbus_config = mt9m111_g_mbus_config, + .s_stream = mt9m111_s_stream, }; static const struct v4l2_subdev_pad_ops mt9m111_subdev_pad_ops = { From patchwork Fri Oct 19 15:50:25 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marco Felsch X-Patchwork-Id: 10649695 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A8EB414E2 for ; Fri, 19 Oct 2018 15:50:44 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9451128498 for ; Fri, 19 Oct 2018 15:50:44 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 883C12849B; Fri, 19 Oct 2018 15:50:44 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1E5222624B for ; Fri, 19 Oct 2018 15:50:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727730AbeJSX5W (ORCPT ); Fri, 19 Oct 2018 19:57:22 -0400 Received: from metis.ext.pengutronix.de ([85.220.165.71]:59629 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726935AbeJSX5W (ORCPT ); Fri, 19 Oct 2018 19:57:22 -0400 Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1gDX2r-0005Fa-MI; Fri, 19 Oct 2018 17:50:37 +0200 Received: from mfe by dude.hi.pengutronix.de with local (Exim 4.91) (envelope-from ) id 1gDX2p-0000aU-R1; Fri, 19 Oct 2018 17:50:35 +0200 From: Marco Felsch To: mchehab@kernel.org, sakari.ailus@linux.intel.com Cc: akinobu.mita@gmail.com, enrico.scholz@sigma-chemnitz.de, linux-media@vger.kernel.org, Michael Grzeschik , kernel@pengutronix.de Subject: [PATCH 2/4] media: mt9m111: add streaming check to set_fmt Date: Fri, 19 Oct 2018 17:50:25 +0200 Message-Id: <20181019155027.28682-3-m.felsch@pengutronix.de> X-Mailer: git-send-email 2.19.0 In-Reply-To: <20181019155027.28682-1-m.felsch@pengutronix.de> References: <20181019155027.28682-1-m.felsch@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: mfe@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-media@vger.kernel.org Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Michael Grzeschik Currently set_fmt don't care about the streaming status, so the format can be changed during streaming. This can lead into wrong behaviours. Check if the device is already streaming and return -EBUSY to avoid wrong behaviours. Signed-off-by: Michael Grzeschik Signed-off-by: Marco Felsch Reviewed-by: Philipp Zabel --- drivers/media/i2c/mt9m111.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/media/i2c/mt9m111.c b/drivers/media/i2c/mt9m111.c index 78d08a81e0e2..d060075a670b 100644 --- a/drivers/media/i2c/mt9m111.c +++ b/drivers/media/i2c/mt9m111.c @@ -561,6 +561,9 @@ static int mt9m111_set_fmt(struct v4l2_subdev *sd, bool bayer; int ret; + if (mt9m111->is_streaming) + return -EBUSY; + if (format->pad) return -EINVAL; From patchwork Fri Oct 19 15:50:26 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marco Felsch X-Patchwork-Id: 10649701 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 0D45214E2 for ; Fri, 19 Oct 2018 15:50:47 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EECF3284A3 for ; Fri, 19 Oct 2018 15:50:46 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E38F4284AF; Fri, 19 Oct 2018 15:50:46 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 17D202849B for ; Fri, 19 Oct 2018 15:50:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727736AbeJSX5X (ORCPT ); Fri, 19 Oct 2018 19:57:23 -0400 Received: from metis.ext.pengutronix.de ([85.220.165.71]:33945 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727715AbeJSX5X (ORCPT ); Fri, 19 Oct 2018 19:57:23 -0400 Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1gDX2r-0005Fb-MG; Fri, 19 Oct 2018 17:50:37 +0200 Received: from mfe by dude.hi.pengutronix.de with local (Exim 4.91) (envelope-from ) id 1gDX2p-0000aY-Rk; Fri, 19 Oct 2018 17:50:35 +0200 From: Marco Felsch To: mchehab@kernel.org, sakari.ailus@linux.intel.com Cc: akinobu.mita@gmail.com, enrico.scholz@sigma-chemnitz.de, linux-media@vger.kernel.org, Michael Grzeschik , kernel@pengutronix.de Subject: [PATCH 3/4] media: mt9m111: add support to select formats and fps for {Q,SXGA} Date: Fri, 19 Oct 2018 17:50:26 +0200 Message-Id: <20181019155027.28682-4-m.felsch@pengutronix.de> X-Mailer: git-send-email 2.19.0 In-Reply-To: <20181019155027.28682-1-m.felsch@pengutronix.de> References: <20181019155027.28682-1-m.felsch@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: mfe@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-media@vger.kernel.org Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Michael Grzeschik This patch implements the framerate selection using the skipping and readout power-modi features. The power-modi cut the framerate by half and each context has an independent selection bit. The same applies to the 2x skipping feature. Signed-off-by: Michael Grzeschik Signed-off-by: Marco Felsch --- drivers/media/i2c/mt9m111.c | 156 ++++++++++++++++++++++++++++++++++++ 1 file changed, 156 insertions(+) diff --git a/drivers/media/i2c/mt9m111.c b/drivers/media/i2c/mt9m111.c index d060075a670b..13080c6c1ba3 100644 --- a/drivers/media/i2c/mt9m111.c +++ b/drivers/media/i2c/mt9m111.c @@ -204,6 +204,22 @@ static const struct mt9m111_datafmt mt9m111_colour_fmts[] = { {MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE, V4L2_COLORSPACE_SRGB}, }; +enum mt9m111_mode_id { + MT9M111_MODE_SXGA_8FPS, + MT9M111_MODE_SXGA_15FPS, + MT9M111_MODE_QSXGA_30FPS, + MT9M111_NUM_MODES, +}; + +struct mt9m111_mode_info { + unsigned int sensor_w; + unsigned int sensor_h; + unsigned int max_image_w; + unsigned int max_image_h; + unsigned int max_fps; + unsigned int reg_val; +}; + struct mt9m111 { struct v4l2_subdev subdev; struct v4l2_ctrl_handler hdl; @@ -213,6 +229,8 @@ struct mt9m111 { struct v4l2_clk *clk; unsigned int width; /* output */ unsigned int height; /* sizes */ + struct v4l2_fract frame_interval; + const struct mt9m111_mode_info *current_mode; struct mutex power_lock; /* lock to protect power_count */ int power_count; const struct mt9m111_datafmt *fmt; @@ -223,6 +241,34 @@ struct mt9m111 { #endif }; +static const struct mt9m111_mode_info mt9m111_mode_data[MT9M111_NUM_MODES] = { + [MT9M111_MODE_SXGA_8FPS] = { + .sensor_w = 1280, + .sensor_h = 1024, + .max_image_w = 1280, + .max_image_h = 1024, + .max_fps = 8, + .reg_val = MT9M111_RM_LOW_POWER_RD, + }, + [MT9M111_MODE_SXGA_15FPS] = { + .sensor_w = 1280, + .sensor_h = 1024, + .max_image_w = 1280, + .max_image_h = 1024, + .max_fps = 15, + .reg_val = MT9M111_RM_FULL_POWER_RD, + }, + [MT9M111_MODE_QSXGA_30FPS] = { + .sensor_w = 1280, + .sensor_h = 1024, + .max_image_w = 640, + .max_image_h = 512, + .max_fps = 30, + .reg_val = MT9M111_RM_LOW_POWER_RD | MT9M111_RM_COL_SKIP_2X | + MT9M111_RM_ROW_SKIP_2X, + }, +}; + /* Find a data format by a pixel code */ static const struct mt9m111_datafmt *mt9m111_find_datafmt(struct mt9m111 *mt9m111, u32 code) @@ -616,6 +662,62 @@ static int mt9m111_set_fmt(struct v4l2_subdev *sd, return ret; } +static const struct mt9m111_mode_info * +mt9m111_find_mode(struct mt9m111 *mt9m111, unsigned int req_fps, + unsigned int width, unsigned int height) +{ + const struct mt9m111_mode_info *mode; + struct v4l2_rect *sensor_rect = &mt9m111->rect; + unsigned int gap, gap_best = (unsigned int) -1; + int i, best_gap_idx = 1; + + /* find best matched fps */ + for (i = 0; i < MT9M111_NUM_MODES; i++) { + unsigned int fps = mt9m111_mode_data[i].max_fps; + + gap = abs(fps - req_fps); + if (gap < gap_best) { + best_gap_idx = i; + gap_best = gap; + } + } + + /* + * Use context a/b default timing values instead of calculate blanking + * timing values. + */ + mode = &mt9m111_mode_data[best_gap_idx]; + mt9m111->ctx = (best_gap_idx == MT9M111_MODE_QSXGA_30FPS) ? &context_a : + &context_b; + + /* + * Check if current settings support the fps because fps selection is + * based on the row/col skipping mechanism which has some restriction. + */ + if (sensor_rect->width != mode->sensor_w || + sensor_rect->height != mode->sensor_h || + width > mode->max_image_w || + height > mode->max_image_h) { + /* reset sensor window size */ + mt9m111->rect.left = MT9M111_MIN_DARK_COLS; + mt9m111->rect.top = MT9M111_MIN_DARK_ROWS; + mt9m111->rect.width = mode->sensor_w; + mt9m111->rect.height = mode->sensor_h; + + /* reset image size */ + mt9m111->width = mode->max_image_w; + mt9m111->height = mode->max_image_h; + + dev_warn(mt9m111->subdev.dev, + "Warning: update image size %dx%d[%dx%d] -> %dx%d[%dx%d]\n", + sensor_rect->width, sensor_rect->height, width, height, + mode->sensor_w, mode->sensor_h, mode->max_image_w, + mode->max_image_h); + } + + return mode; +} + #ifdef CONFIG_VIDEO_ADV_DEBUG static int mt9m111_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg) @@ -776,11 +878,15 @@ static int mt9m111_suspend(struct mt9m111 *mt9m111) static void mt9m111_restore_state(struct mt9m111 *mt9m111) { + struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev); + mt9m111_set_context(mt9m111, mt9m111->ctx); mt9m111_set_pixfmt(mt9m111, mt9m111->fmt->code); mt9m111_setup_geometry(mt9m111, &mt9m111->rect, mt9m111->width, mt9m111->height, mt9m111->fmt->code); v4l2_ctrl_handler_setup(&mt9m111->hdl); + mt9m111_reg_write(client, mt9m111->ctx->read_mode, + mt9m111->current_mode->reg_val); } static int mt9m111_resume(struct mt9m111 *mt9m111) @@ -873,6 +979,50 @@ static const struct v4l2_subdev_core_ops mt9m111_subdev_core_ops = { #endif }; +static int mt9m111_g_frame_interval(struct v4l2_subdev *sd, + struct v4l2_subdev_frame_interval *fi) +{ + struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev); + + fi->interval = mt9m111->frame_interval; + + return 0; +} + +static int mt9m111_s_frame_interval(struct v4l2_subdev *sd, + struct v4l2_subdev_frame_interval *fi) +{ + struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev); + const struct mt9m111_mode_info *mode; + struct v4l2_fract *fract = &fi->interval; + int fps; + + if (mt9m111->is_streaming) + return -EBUSY; + + if (fi->pad != 0) + return -EINVAL; + + if (fract->numerator == 0) { + fract->denominator = 30; + fract->numerator = 1; + } + + fps = DIV_ROUND_CLOSEST(fract->denominator, fract->numerator); + + /* find best fitting mode */ + mode = mt9m111_find_mode(mt9m111, fps, mt9m111->width, mt9m111->height); + if (mode->max_fps != fps) { + fract->denominator = mode->max_fps; + fract->numerator = 1; + } + + mt9m111->current_mode = mode; + mt9m111->frame_interval = fi->interval; + + return 0; +} + static int mt9m111_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_mbus_code_enum *code) @@ -906,6 +1056,8 @@ static int mt9m111_g_mbus_config(struct v4l2_subdev *sd, static const struct v4l2_subdev_video_ops mt9m111_subdev_video_ops = { .g_mbus_config = mt9m111_g_mbus_config, .s_stream = mt9m111_s_stream, + .g_frame_interval = mt9m111_g_frame_interval, + .s_frame_interval = mt9m111_s_frame_interval, }; static const struct v4l2_subdev_pad_ops mt9m111_subdev_pad_ops = { @@ -1022,6 +1174,10 @@ static int mt9m111_probe(struct i2c_client *client, goto out_hdlfree; #endif + mt9m111->current_mode = &mt9m111_mode_data[MT9M111_MODE_SXGA_15FPS]; + mt9m111->frame_interval.numerator = 1; + mt9m111->frame_interval.denominator = mt9m111->current_mode->max_fps; + /* Second stage probe - when a capture adapter is there */ mt9m111->rect.left = MT9M111_MIN_DARK_COLS; mt9m111->rect.top = MT9M111_MIN_DARK_ROWS; From patchwork Fri Oct 19 15:50:27 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marco Felsch X-Patchwork-Id: 10649697 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 59B0C181D for ; Fri, 19 Oct 2018 15:50:45 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 48AB72849D for ; Fri, 19 Oct 2018 15:50:45 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 370F22624B; Fri, 19 Oct 2018 15:50:45 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 89AD12624B for ; Fri, 19 Oct 2018 15:50:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727734AbeJSX5X (ORCPT ); Fri, 19 Oct 2018 19:57:23 -0400 Received: from metis.ext.pengutronix.de ([85.220.165.71]:36965 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727719AbeJSX5W (ORCPT ); Fri, 19 Oct 2018 19:57:22 -0400 Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1gDX2r-0005Fc-MG; Fri, 19 Oct 2018 17:50:37 +0200 Received: from mfe by dude.hi.pengutronix.de with local (Exim 4.91) (envelope-from ) id 1gDX2p-0000at-SL; Fri, 19 Oct 2018 17:50:35 +0200 From: Marco Felsch To: mchehab@kernel.org, sakari.ailus@linux.intel.com Cc: akinobu.mita@gmail.com, enrico.scholz@sigma-chemnitz.de, linux-media@vger.kernel.org, kernel@pengutronix.de, Michael Grzeschik Subject: [PATCH 4/4] media: mt9m111: allow to setup pixclk polarity Date: Fri, 19 Oct 2018 17:50:27 +0200 Message-Id: <20181019155027.28682-5-m.felsch@pengutronix.de> X-Mailer: git-send-email 2.19.0 In-Reply-To: <20181019155027.28682-1-m.felsch@pengutronix.de> References: <20181019155027.28682-1-m.felsch@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: mfe@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-media@vger.kernel.org Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Enrico Scholz The chip can be configured to output data transitions on the rising or falling edge of PIXCLK (Datasheet R58:1[9]), default is on the falling edge. Parsing the fw-node is made in a subfunction to bundle all (future) dt-parsing / fw-parsing stuff. Signed-off-by: Enrico Scholz (m.grzeschik@pengutronix.de: Fix inverting clock. INV_PIX_CLOCK bit is set per default. Set bit to 0 (enable mask bit without value) to enable falling edge sampling.) Signed-off-by: Michael Grzeschik (m.felsch@pengutronix.de: use fwnode helpers) (m.felsch@pengutronix.de: mv of parsing into own function) (m.felsch@pengutronix.de: adapt commit msg) Signed-off-by: Marco Felsch Reviewed-by: Philipp Zabel --- drivers/media/i2c/mt9m111.c | 52 ++++++++++++++++++++++++++++++++++++- 1 file changed, 51 insertions(+), 1 deletion(-) diff --git a/drivers/media/i2c/mt9m111.c b/drivers/media/i2c/mt9m111.c index 13080c6c1ba3..5d45bc9ea0cb 100644 --- a/drivers/media/i2c/mt9m111.c +++ b/drivers/media/i2c/mt9m111.c @@ -15,12 +15,14 @@ #include #include #include +#include #include #include #include #include #include +#include /* * MT9M111, MT9M112 and MT9M131: @@ -236,6 +238,8 @@ struct mt9m111 { const struct mt9m111_datafmt *fmt; int lastpage; /* PageMap cache value */ bool is_streaming; + /* user point of view - 0: falling 1: rising edge */ + unsigned int pclk_sample:1; #ifdef CONFIG_MEDIA_CONTROLLER struct media_pad pad; #endif @@ -586,6 +590,10 @@ static int mt9m111_set_pixfmt(struct mt9m111 *mt9m111, return -EINVAL; } + /* receiver samples on falling edge, chip-hw default is rising */ + if (mt9m111->pclk_sample == 0) + mask_outfmt2 |= MT9M111_OUTFMT_INV_PIX_CLOCK; + ret = mt9m111_reg_mask(client, context_a.output_fmt_ctrl2, data_outfmt2, mask_outfmt2); if (!ret) @@ -1045,9 +1053,15 @@ static int mt9m111_s_stream(struct v4l2_subdev *sd, int enable) static int mt9m111_g_mbus_config(struct v4l2_subdev *sd, struct v4l2_mbus_config *cfg) { - cfg->flags = V4L2_MBUS_MASTER | V4L2_MBUS_PCLK_SAMPLE_RISING | + struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev); + + cfg->flags = V4L2_MBUS_MASTER | V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_DATA_ACTIVE_HIGH; + + cfg->flags |= mt9m111->pclk_sample ? V4L2_MBUS_PCLK_SAMPLE_FALLING : + V4L2_MBUS_PCLK_SAMPLE_RISING; + cfg->type = V4L2_MBUS_PARALLEL; return 0; @@ -1117,6 +1131,33 @@ static int mt9m111_video_probe(struct i2c_client *client) return ret; } +#ifdef CONFIG_OF +static int mt9m111_probe_of(struct i2c_client *client, struct mt9m111 *mt9m111) +{ + struct v4l2_fwnode_endpoint *bus_cfg; + struct device_node *np; + int ret = 0; + + np = of_graph_get_next_endpoint(client->dev.of_node, NULL); + if (!np) + return -EINVAL; + + bus_cfg = v4l2_fwnode_endpoint_alloc_parse(of_fwnode_handle(np)); + if (IS_ERR(bus_cfg)) { + ret = PTR_ERR(bus_cfg); + goto out_of_put; + } + + mt9m111->pclk_sample = !!(bus_cfg->bus.parallel.flags & + V4L2_MBUS_PCLK_SAMPLE_RISING); + + v4l2_fwnode_endpoint_free(bus_cfg); +out_of_put: + of_node_put(np); + return ret; +} +#endif + static int mt9m111_probe(struct i2c_client *client, const struct i2c_device_id *did) { @@ -1141,6 +1182,15 @@ static int mt9m111_probe(struct i2c_client *client, /* Default HIGHPOWER context */ mt9m111->ctx = &context_b; + if (IS_ENABLED(CONFIG_OF)) { + ret = mt9m111_probe_of(client, mt9m111); + if (ret) + return ret; + } else { + /* use default chip hardware values */ + mt9m111->pclk_sample = 1; + } + v4l2_i2c_subdev_init(&mt9m111->subdev, client, &mt9m111_subdev_ops); mt9m111->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;