From patchwork Fri Jan 26 13:48:44 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jacopo Mondi X-Patchwork-Id: 10185841 X-Patchwork-Delegate: geert@linux-m68k.org Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 10C5760383 for ; Fri, 26 Jan 2018 13:51:59 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0250B29121 for ; Fri, 26 Jan 2018 13:51:59 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id EAF0129271; Fri, 26 Jan 2018 13:51:58 +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=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable 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 205E029121 for ; Fri, 26 Jan 2018 13:51:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752917AbeAZNuW (ORCPT ); Fri, 26 Jan 2018 08:50:22 -0500 Received: from relay6-d.mail.gandi.net ([217.70.183.198]:46095 "EHLO relay6-d.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752906AbeAZNuR (ORCPT ); Fri, 26 Jan 2018 08:50:17 -0500 X-Originating-IP: 31.157.216.129 Received: from w540.lan (unknown [31.157.216.129]) (Authenticated sender: jacopo@jmondi.org) by relay6-d.mail.gandi.net (Postfix) with ESMTPSA id AB4D0FB8C2; Fri, 26 Jan 2018 14:50:10 +0100 (CET) From: Jacopo Mondi To: laurent.pinchart@ideasonboard.com, magnus.damm@gmail.com, geert@glider.be, hverkuil@xs4all.nl, mchehab@kernel.org, festevam@gmail.com, sakari.ailus@iki.fi, robh+dt@kernel.org, mark.rutland@arm.com, pombredanne@nexb.com Cc: Jacopo Mondi , linux-renesas-soc@vger.kernel.org, linux-media@vger.kernel.org, linux-sh@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v7 8/9] media: i2c: tw9910: Remove soc_camera dependencies Date: Fri, 26 Jan 2018 14:48:44 +0100 Message-Id: <1516974528-11120-13-git-send-email-jacopo+renesas@jmondi.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1516974528-11120-1-git-send-email-jacopo+renesas@jmondi.org> References: <1516974528-11120-1-git-send-email-jacopo+renesas@jmondi.org> Sender: linux-renesas-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Remove soc_camera framework dependencies from tw9910 sensor driver. - Handle clock and gpios - Register async subdevice - Remove soc_camera specific g/s_mbus_config operations - Add kernel doc to driver interface header file - Adjust build system This commit does not remove the original soc_camera based driver as long as other platforms depends on soc_camera-based CEU driver. Signed-off-by: Jacopo Mondi Reviewed-by: Laurent Pinchart Acked-by: Hans Verkuil --- drivers/media/i2c/Kconfig | 9 +++ drivers/media/i2c/Makefile | 1 + drivers/media/i2c/tw9910.c | 162 ++++++++++++++++++++++++++++----------------- include/media/i2c/tw9910.h | 9 +++ 4 files changed, 120 insertions(+), 61 deletions(-) diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig index a61d7f4..804a1bf 100644 --- a/drivers/media/i2c/Kconfig +++ b/drivers/media/i2c/Kconfig @@ -423,6 +423,15 @@ config VIDEO_TW9906 To compile this driver as a module, choose M here: the module will be called tw9906. +config VIDEO_TW9910 + tristate "Techwell TW9910 video decoder" + depends on VIDEO_V4L2 && I2C + ---help--- + Support for Techwell TW9910 NTSC/PAL/SECAM video decoder. + + To compile this driver as a module, choose M here: the + module will be called tw9910. + config VIDEO_VPX3220 tristate "vpx3220a, vpx3216b & vpx3214c video decoders" depends on VIDEO_V4L2 && I2C diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile index fb99293..e26544f 100644 --- a/drivers/media/i2c/Makefile +++ b/drivers/media/i2c/Makefile @@ -48,6 +48,7 @@ obj-$(CONFIG_VIDEO_TVP7002) += tvp7002.o obj-$(CONFIG_VIDEO_TW2804) += tw2804.o obj-$(CONFIG_VIDEO_TW9903) += tw9903.o obj-$(CONFIG_VIDEO_TW9906) += tw9906.o +obj-$(CONFIG_VIDEO_TW9910) += tw9910.o obj-$(CONFIG_VIDEO_CS3308) += cs3308.o obj-$(CONFIG_VIDEO_CS5345) += cs5345.o obj-$(CONFIG_VIDEO_CS53L32A) += cs53l32a.o diff --git a/drivers/media/i2c/tw9910.c b/drivers/media/i2c/tw9910.c index bdb5e0a..96792df 100644 --- a/drivers/media/i2c/tw9910.c +++ b/drivers/media/i2c/tw9910.c @@ -1,6 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0 /* * tw9910 Video Driver * + * Copyright (C) 2017 Jacopo Mondi + * * Copyright (C) 2008 Renesas Solutions Corp. * Kuninori Morimoto * @@ -10,12 +13,10 @@ * Copyright 2006-7 Jonathan Corbet * Copyright (C) 2008 Magnus Damm * Copyright (C) 2008, Guennadi Liakhovetski - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. */ +#include +#include #include #include #include @@ -25,9 +26,7 @@ #include #include -#include #include -#include #include #define GET_ID(val) ((val & 0xF8) >> 3) @@ -228,8 +227,10 @@ struct tw9910_scale_ctrl { struct tw9910_priv { struct v4l2_subdev subdev; - struct v4l2_clk *clk; + struct clk *clk; struct tw9910_video_info *info; + struct gpio_desc *pdn_gpio; + struct gpio_desc *rstb_gpio; const struct tw9910_scale_ctrl *scale; v4l2_std_id norm; u32 revision; @@ -582,13 +583,66 @@ static int tw9910_s_register(struct v4l2_subdev *sd, } #endif +static int tw9910_power_on(struct tw9910_priv *priv) +{ + struct i2c_client *client = v4l2_get_subdevdata(&priv->subdev); + int ret; + + if (priv->clk) { + ret = clk_prepare_enable(priv->clk); + if (ret) + return ret; + } + + if (priv->pdn_gpio) { + gpiod_set_value(priv->pdn_gpio, 0); + usleep_range(500, 1000); + } + + /* + * FIXME: The reset signal is connected to a shared GPIO on some + * platforms (namely the SuperH Migo-R). Until a framework becomes + * available to handle this cleanly, request the GPIO temporarily + * to avoid conflicts. + */ + priv->rstb_gpio = gpiod_get_optional(&client->dev, "rstb", + GPIOD_OUT_LOW); + if (IS_ERR(priv->rstb_gpio)) { + dev_info(&client->dev, "Unable to get GPIO \"rstb\""); + return PTR_ERR(priv->rstb_gpio); + } + + if (priv->rstb_gpio) { + gpiod_set_value(priv->rstb_gpio, 1); + usleep_range(500, 1000); + gpiod_set_value(priv->rstb_gpio, 0); + usleep_range(500, 1000); + + gpiod_put(priv->rstb_gpio); + } + + return 0; +} + +static int tw9910_power_off(struct tw9910_priv *priv) +{ + clk_disable_unprepare(priv->clk); + + if (priv->pdn_gpio) { + gpiod_set_value(priv->pdn_gpio, 1); + usleep_range(500, 1000); + } + + return 0; +} + static int tw9910_s_power(struct v4l2_subdev *sd, int on) { struct i2c_client *client = v4l2_get_subdevdata(sd); - struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client); struct tw9910_priv *priv = to_tw9910(client); - return soc_camera_set_power(&client->dev, ssdd, priv->clk, on); + return on ? tw9910_power_on(priv) : + tw9910_power_off(priv); } static int tw9910_set_frame(struct v4l2_subdev *sd, u32 *width, u32 *height) @@ -614,7 +668,7 @@ static int tw9910_set_frame(struct v4l2_subdev *sd, u32 *width, u32 *height) * set bus width */ val = 0x00; - if (SOCAM_DATAWIDTH_16 == priv->info->buswidth) + if (priv->info->buswidth == 16) val = LEN; ret = tw9910_mask_set(client, OPFORM, LEN, val); @@ -799,8 +853,7 @@ static int tw9910_video_probe(struct i2c_client *client) /* * tw9910 only use 8 or 16 bit bus width */ - if (SOCAM_DATAWIDTH_16 != priv->info->buswidth && - SOCAM_DATAWIDTH_8 != priv->info->buswidth) { + if (priv->info->buswidth != 16 && priv->info->buswidth != 8) { dev_err(&client->dev, "bus width error\n"); return -ENODEV; } @@ -856,45 +909,6 @@ static int tw9910_enum_mbus_code(struct v4l2_subdev *sd, return 0; } -static int tw9910_g_mbus_config(struct v4l2_subdev *sd, - struct v4l2_mbus_config *cfg) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client); - - cfg->flags = V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_MASTER | - V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_LOW | - V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_HSYNC_ACTIVE_LOW | - V4L2_MBUS_DATA_ACTIVE_HIGH; - cfg->type = V4L2_MBUS_PARALLEL; - cfg->flags = soc_camera_apply_board_flags(ssdd, cfg); - - return 0; -} - -static int tw9910_s_mbus_config(struct v4l2_subdev *sd, - const struct v4l2_mbus_config *cfg) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client); - u8 val = VSSL_VVALID | HSSL_DVALID; - unsigned long flags = soc_camera_apply_board_flags(ssdd, cfg); - - /* - * set OUTCTR1 - * - * We use VVALID and DVALID signals to control VSYNC and HSYNC - * outputs, in this mode their polarity is inverted. - */ - if (flags & V4L2_MBUS_HSYNC_ACTIVE_LOW) - val |= HSP_HI; - - if (flags & V4L2_MBUS_VSYNC_ACTIVE_LOW) - val |= VSP_HI; - - return i2c_smbus_write_byte_data(client, OUTCTR1, val); -} - static int tw9910_g_tvnorms(struct v4l2_subdev *sd, v4l2_std_id *norm) { *norm = V4L2_STD_NTSC | V4L2_STD_PAL; @@ -905,8 +919,6 @@ static const struct v4l2_subdev_video_ops tw9910_subdev_video_ops = { .s_std = tw9910_s_std, .g_std = tw9910_g_std, .s_stream = tw9910_s_stream, - .g_mbus_config = tw9910_g_mbus_config, - .s_mbus_config = tw9910_s_mbus_config, .g_tvnorms = tw9910_g_tvnorms, }; @@ -935,15 +947,14 @@ static int tw9910_probe(struct i2c_client *client, struct tw9910_video_info *info; struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); - struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client); int ret; - if (!ssdd || !ssdd->drv_priv) { + if (!client->dev.platform_data) { dev_err(&client->dev, "TW9910: missing platform data!\n"); return -EINVAL; } - info = ssdd->drv_priv; + info = client->dev.platform_data; if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { dev_err(&client->dev, @@ -959,13 +970,37 @@ static int tw9910_probe(struct i2c_client *client, v4l2_i2c_subdev_init(&priv->subdev, client, &tw9910_subdev_ops); - priv->clk = v4l2_clk_get(&client->dev, "mclk"); - if (IS_ERR(priv->clk)) + priv->clk = clk_get(&client->dev, "xti"); + if (PTR_ERR(priv->clk) == -ENOENT) { + priv->clk = NULL; + } else if (IS_ERR(priv->clk)) { + dev_err(&client->dev, "Unable to get xti clock\n"); return PTR_ERR(priv->clk); + } + + priv->pdn_gpio = gpiod_get_optional(&client->dev, "pdn", + GPIOD_OUT_HIGH); + if (IS_ERR(priv->pdn_gpio)) { + dev_info(&client->dev, "Unable to get GPIO \"pdn\""); + ret = PTR_ERR(priv->pdn_gpio); + goto error_clk_put; + } ret = tw9910_video_probe(client); if (ret < 0) - v4l2_clk_put(priv->clk); + goto error_gpio_put; + + ret = v4l2_async_register_subdev(&priv->subdev); + if (ret) + goto error_gpio_put; + + return ret; + +error_gpio_put: + if (priv->pdn_gpio) + gpiod_put(priv->pdn_gpio); +error_clk_put: + clk_put(priv->clk); return ret; } @@ -973,7 +1008,12 @@ static int tw9910_probe(struct i2c_client *client, static int tw9910_remove(struct i2c_client *client) { struct tw9910_priv *priv = to_tw9910(client); - v4l2_clk_put(priv->clk); + + if (priv->pdn_gpio) + gpiod_put(priv->pdn_gpio); + clk_put(priv->clk); + v4l2_device_unregister_subdev(&priv->subdev); + return 0; } @@ -994,6 +1034,6 @@ static struct i2c_driver tw9910_i2c_driver = { module_i2c_driver(tw9910_i2c_driver); -MODULE_DESCRIPTION("SoC Camera driver for tw9910"); +MODULE_DESCRIPTION("V4L2 driver for TW9910 video decoder"); MODULE_AUTHOR("Kuninori Morimoto"); MODULE_LICENSE("GPL v2"); diff --git a/include/media/i2c/tw9910.h b/include/media/i2c/tw9910.h index 90bcf1f..bec8f7b 100644 --- a/include/media/i2c/tw9910.h +++ b/include/media/i2c/tw9910.h @@ -18,6 +18,9 @@ #include +/** + * tw9910_mpout_pin - MPOUT (multi-purpose output) pin functions + */ enum tw9910_mpout_pin { TW9910_MPO_VLOSS, TW9910_MPO_HLOCK, @@ -29,6 +32,12 @@ enum tw9910_mpout_pin { TW9910_MPO_RTCO, }; +/** + * tw9910_video_info - tw9910 driver interface structure + * @buswidth: Parallel data bus width (8 or 16). + * @mpout: Selected function of MPOUT (multi-purpose output) pin. + * See &enum tw9910_mpout_pin + */ struct tw9910_video_info { unsigned long buswidth; enum tw9910_mpout_pin mpout;