From patchwork Wed Apr 24 07:41:13 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shaik Ameer Basha X-Patchwork-Id: 2482881 Return-Path: X-Original-To: patchwork-linux-media@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id 0F163DF25A for ; Wed, 24 Apr 2013 07:42:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755665Ab3DXHmh (ORCPT ); Wed, 24 Apr 2013 03:42:37 -0400 Received: from mail-pd0-f177.google.com ([209.85.192.177]:38974 "EHLO mail-pd0-f177.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757602Ab3DXHme (ORCPT ); Wed, 24 Apr 2013 03:42:34 -0400 Received: by mail-pd0-f177.google.com with SMTP id p11so958589pdj.22 for ; Wed, 24 Apr 2013 00:42:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=x-received:sender:from:to:cc:subject:date:message-id:x-mailer :in-reply-to:references; bh=AGgC8t0L1KvWFXRtlFOfJNasmP940XuYc63ZC4TXOV4=; b=xtJuxXgnuTfBQPosBcj37/Hm11Bz9HVWXmV/XBEMMqpTEuPoCAKTW5GQuC31719uCv yriofVB5e092kyjCS4hqVCXS10fnfA51fS00VCLw3X8vM3rdyD5SGYJnNIh0kNf5gX4S zQdsG3UR880K6g0x08V5TOGhJPT+zHIIHvSXjEZZx1k3aiyrZK0TF/PKxESCyyiqPLS1 fQOUsNEhks8Hgcuo7D8d0bsZwaB4Qr687JnYlBJ6Kj7kTu59oTvqn/Lm3RgRTUZYEWvU OFZH3UUgD0C8JPOGiIvGoa+SlnHMhZxIBjs4zFQiRYZVpKQDkJg5rr7rRlJ2DNcGqCLA mRMQ== X-Received: by 10.66.88.38 with SMTP id bd6mr9076561pab.184.1366789353971; Wed, 24 Apr 2013 00:42:33 -0700 (PDT) Received: from localhost.localdomain ([115.113.119.130]) by mx.google.com with ESMTPSA id lo7sm2513173pab.19.2013.04.24.00.42.30 for (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 24 Apr 2013 00:42:33 -0700 (PDT) From: Shaik Ameer Basha To: linux-media@vger.kernel.org, devicetree-discuss@lists.ozlabs.org, linux-samsung-soc@vger.kernel.org Cc: s.nawrocki@samsung.com, shaik.samsung@gmail.com, arunkk.samsung@gmail.com Subject: [RFC v2 6/6] media: exynos5-is: Adding media device driver for exynos5 Date: Wed, 24 Apr 2013 13:11:13 +0530 Message-Id: <1366789273-30184-7-git-send-email-shaik.ameer@samsung.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1366789273-30184-1-git-send-email-shaik.ameer@samsung.com> References: <1366789273-30184-1-git-send-email-shaik.ameer@samsung.com> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org This patch adds support for media device for EXYNOS5 SoCs. The current media device supports the following ips to connect through the media controller framework. * MIPI-CSIS Support interconnection(subdev interface) between devices * FIMC-LITE Support capture interface from device(Sensor, MIPI-CSIS) to memory Support interconnection(subdev interface) between devices G-Scaler will be added later to the current media device. * Gscaler: general scaler Support memory to memory interface Support output interface from memory to display device(LCD, TV) Support capture interface from device(FIMC-LITE, FIMD) to memory --> media 0 Camera Capture path consists of MIPI-CSIS, FIMC-LITE and G-Scaler +--------+ +-----------+ +-----------------+ | Sensor | --> | FIMC-LITE | --> | G-Scaler-capture | +--------+ +-----------+ +-----------------+ +--------+ +-----------+ +-----------+ +-----------------+ | Sensor | --> | MIPI-CSIS | --> | FIMC-LITE | --> | G-Scaler-capture | +--------+ +-----------+ +-----------+ +-----------------+ Signed-off-by: Shaik Ameer Basha --- .../devicetree/bindings/media/exynos5-mdev.txt | 153 +++ drivers/media/platform/Kconfig | 1 + drivers/media/platform/Makefile | 1 + drivers/media/platform/exynos5-is/Kconfig | 7 + drivers/media/platform/exynos5-is/Makefile | 4 + drivers/media/platform/exynos5-is/exynos5-mdev.c | 1131 ++++++++++++++++++++ drivers/media/platform/exynos5-is/exynos5-mdev.h | 120 +++ 7 files changed, 1417 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/exynos5-mdev.txt create mode 100644 drivers/media/platform/exynos5-is/Kconfig create mode 100644 drivers/media/platform/exynos5-is/Makefile create mode 100644 drivers/media/platform/exynos5-is/exynos5-mdev.c create mode 100644 drivers/media/platform/exynos5-is/exynos5-mdev.h diff --git a/Documentation/devicetree/bindings/media/exynos5-mdev.txt b/Documentation/devicetree/bindings/media/exynos5-mdev.txt new file mode 100644 index 0000000..d7d419b --- /dev/null +++ b/Documentation/devicetree/bindings/media/exynos5-mdev.txt @@ -0,0 +1,153 @@ +Samsung EXYNOS5 SoC Camera Subsystem (FIMC) +---------------------------------------------- + +The Exynos5 SoC Camera subsystem comprises of multiple sub-devices +represented by separate device tree nodes. Currently this includes: FIMC-LITE, +MIPI CSIS and FIMC-IS. + +The sub-subdevices are defined as child nodes of the common 'camera' node which +also includes common properties of the whole subsystem not really specific to +any single sub-device, like common camera port pins or the CAMCLK clock outputs +for external image sensors attached to an SoC. + +Common 'camera' node +-------------------- + +Required properties: + +- compatible : must be "samsung,exynos5-fimc", "simple-bus" +- clocks : list of clock specifiers, corresponding to entries in + the clock-names property; +- clock-names : must contain "sclk_cam0", "sclk_cam1" entries, + matching entries in the clocks property. + +The pinctrl bindings defined in ../pinctrl/pinctrl-bindings.txt must be used +to define a required pinctrl state named "default" and optional pinctrl states: +"idle", "active-a", active-b". These optional states can be used to switch the +camera port pinmux at runtime. The "idle" state should configure both the camera +ports A and B into high impedance state, especially the CAMCLK clock output +should be inactive. For the "active-a" state the camera port A must be activated +and the port B deactivated and for the state "active-b" it should be the other +way around. + +The 'camera' node must include at least one 'fimc-lite' child node. + +'parallel-ports' node +--------------------- + +This node should contain child 'port' nodes specifying active parallel video +input ports. It includes camera A and camera B inputs. 'reg' property in the +port nodes specifies data input - 0, 1 indicates input A, B respectively. + +Optional properties + +- samsung,camclk-out : specifies clock output for remote sensor, + 0 - CAM_A_CLKOUT, 1 - CAM_B_CLKOUT; + +Image sensor nodes +------------------ + +The sensor device nodes should be added to their control bus controller (e.g. +I2C0) nodes and linked to a port node in the csis or the parallel-ports node, +using the common video interfaces bindings, defined in video-interfaces.txt. +The implementation of this bindings requires clock-frequency property to be +present in the sensor device nodes. + +Example: + + aliases { + fimc-lite0 = &fimc_lite_0 + }; + + /* Parallel bus IF sensor */ + i2c_0: i2c@13860000 { + s5k6aa: sensor@3c { + compatible = "samsung,s5k6aafx"; + reg = <0x3c>; + vddio-supply = <...>; + + clock-frequency = <24000000>; + clocks = <...>; + clock-names = "mclk"; + + port { + s5k6aa_ep: endpoint { + remote-endpoint = <&fimc0_ep>; + bus-width = <8>; + hsync-active = <0>; + vsync-active = <1>; + pclk-sample = <1>; + }; + }; + }; + }; + + /* MIPI CSI-2 bus IF sensor */ + s5c73m3: sensor@0x1a { + compatible = "samsung,s5c73m3"; + reg = <0x1a>; + vddio-supply = <...>; + + clock-frequency = <24000000>; + clocks = <...>; + clock-names = "mclk"; + + port { + s5c73m3_1: endpoint { + data-lanes = <1 2 3 4>; + remote-endpoint = <&csis0_ep>; + }; + }; + }; + + camera { + compatible = "samsung,exynos5-fimc", "simple-bus"; + #address-cells = <1>; + #size-cells = <1>; + status = "okay"; + + pinctrl-names = "default"; + pinctrl-0 = <&cam_port_a_clk_active>; + + /* parallel camera ports */ + parallel-ports { + /* camera A input */ + port@0 { + reg = <0>; + fimc0_ep: endpoint { + remote-endpoint = <&s5k6aa_ep>; + bus-width = <8>; + hsync-active = <0>; + vsync-active = <1>; + pclk-sample = <1>; + }; + }; + }; + + fimc_lite_0: fimc-lite@13C00000 { + compatible = "samsung,exynos5250-fimc-lite"; + reg = <0x13C00000 0x1000>; + interrupts = <0 126 0>; + clocks = <&clock 129>; + clock-names = "flite"; + status = "okay"; + }; + + csis_0: csis@11880000 { + compatible = "samsung,exynos4210-csis"; + reg = <0x11880000 0x1000>; + interrupts = <0 78 0>; + /* camera C input */ + port@3 { + reg = <3>; + csis0_ep: endpoint { + remote-endpoint = <&s5c73m3_ep>; + data-lanes = <1 2 3 4>; + samsung,csis-hs-settle = <12>; + }; + }; + }; + }; + +MIPI-CSIS device binding is defined in samsung-mipi-csis.txt and FIMC-LITE +device binding is defined in exynos-fimc-lite.txt. diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig index d25f044..66fbb41 100644 --- a/drivers/media/platform/Kconfig +++ b/drivers/media/platform/Kconfig @@ -123,6 +123,7 @@ config VIDEO_S3C_CAMIF source "drivers/media/platform/soc_camera/Kconfig" source "drivers/media/platform/exynos4-is/Kconfig" +source "drivers/media/platform/exynos5-is/Kconfig" source "drivers/media/platform/s5p-tv/Kconfig" endif # V4L_PLATFORM_DRIVERS diff --git a/drivers/media/platform/Makefile b/drivers/media/platform/Makefile index eee28dd..b1225e5 100644 --- a/drivers/media/platform/Makefile +++ b/drivers/media/platform/Makefile @@ -37,6 +37,7 @@ obj-$(CONFIG_VIDEO_SAMSUNG_S5P_TV) += s5p-tv/ obj-$(CONFIG_VIDEO_SAMSUNG_S5P_G2D) += s5p-g2d/ obj-$(CONFIG_VIDEO_SAMSUNG_EXYNOS_GSC) += exynos-gsc/ +obj-$(CONFIG_VIDEO_SAMSUNG_EXYNOS5_MDEV) += exynos5-is/ obj-$(CONFIG_BLACKFIN) += blackfin/ diff --git a/drivers/media/platform/exynos5-is/Kconfig b/drivers/media/platform/exynos5-is/Kconfig new file mode 100644 index 0000000..de02d90 --- /dev/null +++ b/drivers/media/platform/exynos5-is/Kconfig @@ -0,0 +1,7 @@ +config VIDEO_SAMSUNG_EXYNOS5_MDEV + bool "Samsung Exynos5 Media Device driver" + depends on VIDEO_DEV && VIDEO_V4L2 && ARCH_EXYNOS5 && OF + help + This is a v4l2 based media controller driver for + Exynos5 SoC. + diff --git a/drivers/media/platform/exynos5-is/Makefile b/drivers/media/platform/exynos5-is/Makefile new file mode 100644 index 0000000..002e137 --- /dev/null +++ b/drivers/media/platform/exynos5-is/Makefile @@ -0,0 +1,4 @@ +ccflags-y += -Idrivers/media/platform/exynos4-is +exynos-mdevice-objs := exynos5-mdev.o + +obj-$(CONFIG_VIDEO_SAMSUNG_EXYNOS5_MDEV) += exynos-mdevice.o diff --git a/drivers/media/platform/exynos5-is/exynos5-mdev.c b/drivers/media/platform/exynos5-is/exynos5-mdev.c new file mode 100644 index 0000000..ac3e85e --- /dev/null +++ b/drivers/media/platform/exynos5-is/exynos5-mdev.c @@ -0,0 +1,1131 @@ +/* + * EXYNOS5 SoC series camera host interface media device driver + * + * Copyright (C) 2013 Samsung Electronics Co., Ltd. + * Shaik Ameer Basha + * + * This driver is based on exynos4-is media device driver developed by + * Sylwester Nawrocki + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published + * by the Free Software Foundation, either version 2 of the License, + * or (at your option) any later version. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "exynos5-mdev.h" + +#define dbg(fmt, args...) \ + pr_debug("%s:%d: " fmt "\n", __func__, __LINE__, ##args) + +static int fimc_md_set_camclk(struct v4l2_subdev *sd, bool on); +static int __fimc_md_set_camclk(struct fimc_md *fmd, + struct fimc_source_info *si, + bool on); +/** + * fimc_pipeline_prepare - update pipeline information with subdevice pointers + * @me: media entity terminating the pipeline + * + * Caller holds the graph mutex. + */ +static void fimc_pipeline_prepare(struct exynos5_pipeline0 *p, + struct media_entity *me) +{ + struct v4l2_subdev *sd; + int i; + + for (i = 0; i < IDX_MAX; i++) + p->subdevs[i] = NULL; + + while (1) { + struct media_pad *pad = NULL; + + /* Find remote source pad */ + for (i = 0; i < me->num_pads; i++) { + struct media_pad *spad = &me->pads[i]; + if (!(spad->flags & MEDIA_PAD_FL_SINK)) + continue; + pad = media_entity_remote_source(spad); + if (pad) + break; + } + + if (pad == NULL || + media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV) + break; + sd = media_entity_to_v4l2_subdev(pad->entity); + + switch (sd->grp_id) { + case GRP_ID_FIMC_IS_SENSOR: + case GRP_ID_SENSOR: + p->subdevs[IDX_SENSOR] = sd; + break; + case GRP_ID_CSIS: + p->subdevs[IDX_CSIS] = sd; + break; + case GRP_ID_FLITE: + p->subdevs[IDX_FLITE] = sd; + break; + default: + pr_warn("%s: Unknown subdev grp_id: %#x\n", + __func__, sd->grp_id); + } + me = &sd->entity; + if (me->num_pads == 1) + break; + } +} + +/** + * __subdev_set_power - change power state of a single subdev + * @sd: subdevice to change power state for + * @on: 1 to enable power or 0 to disable + * + * Return result of s_power subdev operation or -ENXIO if sd argument + * is NULL. Return 0 if the subdevice does not implement s_power. + */ +static int __subdev_set_power(struct v4l2_subdev *sd, int on) +{ + int *use_count; + int ret; + + if (sd == NULL) + return -ENXIO; + + use_count = &sd->entity.use_count; + if (on && (*use_count)++ > 0) + return 0; + else if (!on && (*use_count == 0 || --(*use_count) > 0)) + return 0; + ret = v4l2_subdev_call(sd, core, s_power, on); + + return ret != -ENOIOCTLCMD ? ret : 0; +} + +/** + * fimc_pipeline_s_power - change power state of all pipeline subdevs + * @fimc: fimc device terminating the pipeline + * @state: true to power on, false to power off + * + * Needs to be called with the graph mutex held. + */ +static int fimc_pipeline_s_power(struct exynos5_pipeline0 *p, bool state) +{ + unsigned int i; + int ret; + + if (p->subdevs[IDX_SENSOR] == NULL) + return -ENXIO; + + for (i = 0; i < IDX_MAX; i++) { + unsigned int idx = state ? (IDX_MAX - 1) - i : i; + + ret = __subdev_set_power(p->subdevs[idx], state); + if (ret < 0 && ret != -ENXIO) + return ret; + } + + return 0; +} + +/** + * __fimc_pipeline_init - allocate the fimc_pipeline structure and do the + * basic initialization. + * @p: Pointer to fimc_pipeline structure + * + * Initializes the 'is_init' variable to indicate the pipeline structure + * is valid. + */ +static int __fimc_pipeline_init(struct fimc_pipeline *p) +{ + struct exynos5_pipeline0 *ep; + + ep = kzalloc(sizeof(*ep), GFP_KERNEL); + if (!ep) + return -ENOMEM; + + ep->is_init = true; + p->priv = (void *)ep; + return 0; +} + +/** + * __fimc_pipeline_free - free the allocated resources for fimc_pipeline + * @p: Pointer to fimc_pipeline structure + * + * sets the 'is_init' variable to false, to indicate the pipeline structure + * is not valid. + * + * RETURNS: + * Zero in case of success and -EINVAL in case of failure. + */ +static int __fimc_pipeline_free(struct fimc_pipeline *p) +{ + struct exynos5_pipeline0 *ep0 = (struct exynos5_pipeline0 *)p->priv; + + if (!ep0 || !ep0->is_init) + return -EINVAL; + + ep0->is_init = false; + kfree(ep0); + + return 0; +} + +/** + * __fimc_pipeline_open - update the pipeline information, enable power + * of all pipeline subdevs and the sensor clock + * @me: media entity to start graph walk with + * @prepare: true to walk the current pipeline and acquire all subdevs + * + * Called with the graph mutex held. + */ +static int __fimc_pipeline_open(struct fimc_pipeline *p, + struct media_entity *me, bool prepare) +{ + struct exynos5_pipeline0 *ep = (struct exynos5_pipeline0 *)p->priv; + struct v4l2_subdev *sd; + int ret; + + if (WARN_ON(p == NULL || me == NULL)) + return -EINVAL; + + if (!ep || !ep->is_init) + return -EINVAL; + + if (prepare) + fimc_pipeline_prepare(ep, me); + + sd = ep->subdevs[IDX_SENSOR]; + if (sd == NULL) + return -EINVAL; + + ret = fimc_md_set_camclk(sd, true); + if (ret < 0) + return ret; + + ret = fimc_pipeline_s_power(ep, 1); + if (!ret) + return 0; + + fimc_md_set_camclk(sd, false); + return ret; +} + +/** + * __fimc_pipeline_close - disable the sensor clock and pipeline power + * @fimc: fimc device terminating the pipeline + * + * Disable power of all subdevs and turn the external sensor clock off. + */ +static int __fimc_pipeline_close(struct fimc_pipeline *p) +{ + struct exynos5_pipeline0 *ep = (struct exynos5_pipeline0 *)p->priv; + struct v4l2_subdev *sd = ep ? ep->subdevs[IDX_SENSOR] : NULL; + int ret = 0; + + if (WARN_ON(sd == NULL)) + return -EINVAL; + + if (ep->subdevs[IDX_SENSOR]) { + ret = fimc_pipeline_s_power(ep, 0); + fimc_md_set_camclk(sd, false); + } + return ret == -ENXIO ? 0 : ret; +} + +/** + * __fimc_pipeline_s_stream - call s_stream() on pipeline subdevs + * @pipeline: video pipeline structure + * @on: passed as the s_stream() callback argument + */ +static int __fimc_pipeline_s_stream(struct fimc_pipeline *p, bool on) +{ + struct exynos5_pipeline0 *ep = (struct exynos5_pipeline0 *)p->priv; + int i, ret; + + if (ep->subdevs[IDX_SENSOR] == NULL) + return -ENODEV; + + for (i = 0; i < IDX_MAX; i++) { + unsigned int idx = on ? (IDX_MAX - 1) - i : i; + + ret = v4l2_subdev_call(ep->subdevs[idx], video, s_stream, on); + + if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV) + return ret; + } + + return 0; + +} + +/** + * __fimc_pipeline_get_subdev_sensor - if valid pipeline, returns the sensor + * subdev pointer else returns NULL + * @p: Pointer to fimc_pipeline structure + * @sd_idx: Index of the subdev associated with the current pipeline + * + * RETURNS: + * If success, returns valid subdev pointer or NULL in case of sudbev not found + */ +static struct v4l2_subdev *__fimc_pipeline_get_subdev(struct fimc_pipeline *p, + enum exynos_subdev_index sd_idx) +{ + struct exynos5_pipeline0 *ep = (struct exynos5_pipeline0 *)p->priv; + struct v4l2_subdev *sd; + + if (!ep || !ep->is_init) + return NULL; + + switch (sd_idx) { + case EXYNOS_SD_SENSOR: + sd = ep->subdevs[IDX_SENSOR]; + break; + case EXYNOS_SD_CSIS: + sd = ep->subdevs[IDX_CSIS]; + break; + case EXYNOS_SD_FLITE: + sd = ep->subdevs[IDX_FLITE]; + break; + default: + sd = NULL; + break; + } + return sd; +} + +static void __fimc_pipeline_register_notify_callback( + struct fimc_pipeline *p, + void (*notify_cb)(struct v4l2_subdev *sd, + unsigned int notification, void *arg)) +{ + struct exynos5_pipeline0 *ep = (struct exynos5_pipeline0 *)p->priv; + + if (!notify_cb) + return; + + ep->sensor_notify = notify_cb; +} + +/* Media pipeline operations for the FIMC/FIMC-LITE video device driver */ +static const struct fimc_pipeline_ops exynos5_pipeline0_ops = { + .init = __fimc_pipeline_init, + .free = __fimc_pipeline_free, + .open = __fimc_pipeline_open, + .close = __fimc_pipeline_close, + .set_stream = __fimc_pipeline_s_stream, + .get_subdev = __fimc_pipeline_get_subdev, + .register_notify_cb = __fimc_pipeline_register_notify_callback, +}; + +/* Register I2C client subdev associated with @node. */ +static int fimc_md_of_add_sensor(struct fimc_md *fmd, + struct device_node *node, int index) +{ + struct fimc_sensor_info *si; + struct i2c_client *client; + struct v4l2_subdev *sd; + int ret; + + if (WARN_ON(index >= ARRAY_SIZE(fmd->sensor))) + return -EINVAL; + si = &fmd->sensor[index]; + + client = of_find_i2c_device_by_node(node); + if (!client) + return -EPROBE_DEFER; + + device_lock(&client->dev); + + if (!client->driver || + !try_module_get(client->driver->driver.owner)) { + ret = -EPROBE_DEFER; + v4l2_info(&fmd->v4l2_dev, "No driver found for %s\n", + node->full_name); + goto dev_put; + } + + /* Enable sensor's master clock */ + ret = __fimc_md_set_camclk(fmd, &si->pdata, true); + if (ret < 0) + goto mod_put; + sd = i2c_get_clientdata(client); + + ret = v4l2_device_register_subdev(&fmd->v4l2_dev, sd); + __fimc_md_set_camclk(fmd, &si->pdata, false); + if (ret < 0) + goto mod_put; + + v4l2_set_subdev_hostdata(sd, &si->pdata); + sd->grp_id = GRP_ID_SENSOR; + si->subdev = sd; + v4l2_info(&fmd->v4l2_dev, "Registered sensor subdevice: %s (%d)\n", + sd->name, fmd->num_sensors); + fmd->num_sensors++; + +mod_put: + module_put(client->driver->driver.owner); +dev_put: + device_unlock(&client->dev); + put_device(&client->dev); + return ret; +} + +/* Parse port node and register as a sub-device any sensor specified there. */ +static int fimc_md_parse_port_node(struct fimc_md *fmd, + struct device_node *port, + unsigned int index) +{ + struct device_node *rem, *ep; + struct fimc_source_info *pd; + struct v4l2_of_endpoint endpoint; + int ret; + u32 val; + + pd = &fmd->sensor[index].pdata; + + /* Assume here a port node can have only one endpoint node. */ + ep = of_get_next_child(port, NULL); + if (!ep) + return 0; + + v4l2_of_parse_endpoint(ep, &endpoint); + if (WARN_ON(endpoint.port == 0) || index >= FIMC_MAX_SENSORS) + return -EINVAL; + + pd->mux_id = (endpoint.port - 1) & 0x1; + + rem = v4l2_of_get_remote_port_parent(ep); + of_node_put(ep); + if (rem == NULL) { + v4l2_info(&fmd->v4l2_dev, "Remote device at %s not found\n", + ep->full_name); + return 0; + } + if (!of_property_read_u32(rem, "samsung,camclk-out", &val)) + pd->clk_id = val; + + if (!of_property_read_u32(rem, "clock-frequency", &val)) + pd->clk_frequency = val; + + if (pd->clk_frequency == 0) { + v4l2_err(&fmd->v4l2_dev, "Wrong clock frequency at node %s\n", + rem->full_name); + of_node_put(rem); + return -EINVAL; + } + + if (fimc_input_is_parallel(endpoint.port)) { + if (endpoint.bus_type == V4L2_MBUS_PARALLEL) + pd->sensor_bus_type = FIMC_BUS_TYPE_ITU_601; + else + pd->sensor_bus_type = FIMC_BUS_TYPE_ITU_656; + pd->flags = endpoint.bus.parallel.flags; + } else if (fimc_input_is_mipi_csi(endpoint.port)) { + /* + * MIPI CSI-2: only input mux selection and + * the sensor's clock frequency is needed. + */ + pd->sensor_bus_type = FIMC_BUS_TYPE_MIPI_CSI2; + } else { + v4l2_err(&fmd->v4l2_dev, "Wrong port id (%u) at node %s\n", + endpoint.port, rem->full_name); + } + + ret = fimc_md_of_add_sensor(fmd, rem, index); + of_node_put(rem); + + return ret; +} + +/* Register all SoC external sub-devices */ +static int fimc_md_of_sensors_register(struct fimc_md *fmd, + struct device_node *np) +{ + struct device_node *parent = fmd->pdev->dev.of_node; + struct device_node *node, *ports; + int index = 0; + int ret; + + /* Attach sensors linked to MIPI CSI-2 receivers */ + for_each_available_child_of_node(parent, node) { + struct device_node *port; + + if (of_node_cmp(node->name, "csis")) + continue; + /* The csis node can have only port subnode. */ + port = of_get_next_child(node, NULL); + if (!port) + continue; + + ret = fimc_md_parse_port_node(fmd, port, index); + if (ret < 0) + return ret; + index++; + } + + /* Attach sensors listed in the parallel-ports node */ + ports = of_get_child_by_name(parent, "parallel-ports"); + if (!ports) + return 0; + + for_each_child_of_node(ports, node) { + ret = fimc_md_parse_port_node(fmd, node, index); + if (ret < 0) + break; + index++; + } + + return 0; +} + +static int __of_get_csis_id(struct device_node *np) +{ + u32 reg = 0; + + np = of_get_child_by_name(np, "port"); + if (!np) + return -EINVAL; + of_property_read_u32(np, "reg", ®); + return reg - FIMC_INPUT_MIPI_CSI2_0; +} + +/* + * MIPI-CSIS, FIMC and FIMC-LITE platform devices registration. + */ + +static int register_fimc_lite_entity(struct fimc_md *fmd, + struct fimc_lite *fimc_lite) +{ + struct v4l2_subdev *sd; + int ret; + + if (WARN_ON(fimc_lite->index >= FIMC_LITE_MAX_DEVS || + fmd->fimc_lite[fimc_lite->index])) + return -EBUSY; + + sd = &fimc_lite->subdev; + sd->grp_id = GRP_ID_FLITE; + v4l2_set_subdev_hostdata(sd, (void *)&exynos5_pipeline0_ops); + + ret = v4l2_device_register_subdev(&fmd->v4l2_dev, sd); + if (!ret) + fmd->fimc_lite[fimc_lite->index] = fimc_lite; + else + v4l2_err(&fmd->v4l2_dev, "Failed to register FIMC.LITE%d\n", + fimc_lite->index); + return ret; +} + +static int register_csis_entity(struct fimc_md *fmd, + struct platform_device *pdev, + struct v4l2_subdev *sd) +{ + struct device_node *node = pdev->dev.of_node; + int id, ret; + + id = node ? __of_get_csis_id(node) : max(0, pdev->id); + + if (WARN_ON(id < 0 || id >= CSIS_MAX_ENTITIES)) + return -ENOENT; + + if (WARN_ON(fmd->csis[id].sd)) + return -EBUSY; + + sd->grp_id = GRP_ID_CSIS; + ret = v4l2_device_register_subdev(&fmd->v4l2_dev, sd); + if (!ret) + fmd->csis[id].sd = sd; + else + v4l2_err(&fmd->v4l2_dev, + "Failed to register MIPI-CSIS.%d (%d)\n", id, ret); + return ret; +} + +static int fimc_md_register_platform_entity(struct fimc_md *fmd, + struct platform_device *pdev, + int plat_entity) +{ + struct device *dev = &pdev->dev; + int ret = -EPROBE_DEFER; + void *drvdata; + + /* Lock to ensure dev->driver won't change. */ + device_lock(dev); + + if (!dev->driver || !try_module_get(dev->driver->owner)) + goto dev_unlock; + + drvdata = dev_get_drvdata(dev); + /* Some subdev didn't probe succesfully id drvdata is NULL */ + if (drvdata) { + switch (plat_entity) { + case IDX_FLITE: + ret = register_fimc_lite_entity(fmd, drvdata); + break; + case IDX_CSIS: + ret = register_csis_entity(fmd, pdev, drvdata); + break; + default: + ret = -ENODEV; + } + } + + module_put(dev->driver->owner); +dev_unlock: + device_unlock(dev); + if (ret == -EPROBE_DEFER) + dev_info(&fmd->pdev->dev, "deferring %s device registration\n", + dev_name(dev)); + else if (ret < 0) + dev_err(&fmd->pdev->dev, "%s device registration failed (%d)\n", + dev_name(dev), ret); + return ret; +} + +/* Register FIMC, FIMC-LITE and CSIS media entities */ +static int fimc_md_register_of_platform_entities(struct fimc_md *fmd, + struct device_node *parent) +{ + struct device_node *node; + int ret = 0; + + for_each_available_child_of_node(parent, node) { + struct platform_device *pdev; + int plat_entity = -1; + + pdev = of_find_device_by_node(node); + if (!pdev) + continue; + + /* If driver of any entity isn't ready try all again later. */ + if (!strcmp(node->name, CSIS_OF_NODE_NAME)) + plat_entity = IDX_CSIS; + else if (!strcmp(node->name, FIMC_LITE_OF_NODE_NAME)) + plat_entity = IDX_FLITE; + + if (plat_entity >= 0) + ret = fimc_md_register_platform_entity(fmd, pdev, + plat_entity); + put_device(&pdev->dev); + if (ret < 0) + break; + } + + return ret; +} + +static void fimc_md_unregister_entities(struct fimc_md *fmd) +{ + int i; + + for (i = 0; i < FIMC_LITE_MAX_DEVS; i++) { + if (fmd->fimc_lite[i] == NULL) + continue; + v4l2_device_unregister_subdev(&fmd->fimc_lite[i]->subdev); + fmd->fimc_lite[i]->pipeline_ops = NULL; + fmd->fimc_lite[i] = NULL; + } + for (i = 0; i < CSIS_MAX_ENTITIES; i++) { + if (fmd->csis[i].sd == NULL) + continue; + v4l2_device_unregister_subdev(fmd->csis[i].sd); + module_put(fmd->csis[i].sd->owner); + fmd->csis[i].sd = NULL; + } + for (i = 0; i < fmd->num_sensors; i++) { + if (fmd->sensor[i].subdev == NULL) + continue; + v4l2_device_unregister_subdev(fmd->sensor[i].subdev); + fmd->sensor[i].subdev = NULL; + } + v4l2_info(&fmd->v4l2_dev, "Unregistered all entities\n"); +} + +/** + * __fimc_md_create_fimc_links - create links to all FIMC entities + * @fmd: fimc media device + * @source: the source entity to create links to all fimc entities from + * @sensor: sensor subdev linked to FIMC[fimc_id] entity, may be null + * @pad: the source entity pad index + * @link_mask: bitmask of the fimc devices for which link should be enabled + */ +static int __fimc_md_create_fimc_sink_links(struct fimc_md *fmd, + struct media_entity *source, + struct v4l2_subdev *sensor, + int pad, int link_mask) +{ + struct media_entity *sink; + unsigned int flags = 0; + int i, ret = 0; + + for (i = 0; i < FIMC_LITE_MAX_DEVS; i++) { + if (!fmd->fimc_lite[i]) + continue; + + flags = ((1 << i) & link_mask) ? MEDIA_LNK_FL_ENABLED : 0; + sink = &fmd->fimc_lite[i]->subdev.entity; + ret = media_entity_create_link(source, pad, sink, + FLITE_SD_PAD_SINK, flags); + if (ret) + return ret; + + /* Notify FIMC-LITE subdev entity */ + ret = media_entity_call(sink, link_setup, &sink->pads[0], + &source->pads[pad], flags); + if (ret) + break; + + v4l2_info(&fmd->v4l2_dev, "created link [%s] %c> [%s]\n", + source->name, flags ? '=' : '-', sink->name); + } + return 0; +} + +/** + * fimc_md_create_links - create default links between registered entities + * + * Parallel interface sensor entities are connected directly to FIMC capture + * entities. The sensors using MIPI CSIS bus are connected through immutable + * link with CSI receiver entity specified by mux_id. Any registered CSIS + * entity has a link to each registered FIMC capture entity. Enabled links + * are created by default between each subsequent registered sensor and + * subsequent FIMC capture entity. The number of default active links is + * determined by the number of available sensors or FIMC entities, + * whichever is less. + */ +static int fimc_md_create_links(struct fimc_md *fmd) +{ + struct v4l2_subdev *csi_sensors[CSIS_MAX_ENTITIES] = { NULL }; + struct v4l2_subdev *sensor, *csis; + struct fimc_source_info *pdata; + struct media_entity *source, *sink; + int i, pad, fimc_id = 0, ret = 0; + u32 flags, link_mask = 0; + + for (i = 0; i < fmd->num_sensors; i++) { + if (fmd->sensor[i].subdev == NULL) + continue; + + sensor = fmd->sensor[i].subdev; + pdata = v4l2_get_subdev_hostdata(sensor); + if (!pdata) + continue; + + source = NULL; + + switch (pdata->sensor_bus_type) { + case FIMC_BUS_TYPE_MIPI_CSI2: + if (WARN(pdata->mux_id >= CSIS_MAX_ENTITIES, + "Wrong CSI channel id: %d\n", pdata->mux_id)) + return -EINVAL; + + csis = fmd->csis[pdata->mux_id].sd; + if (WARN(csis == NULL, + "MIPI-CSI interface specified " + "but s5p-csis module is not loaded!\n")) + return -EINVAL; + + pad = sensor->entity.num_pads - 1; + ret = media_entity_create_link(&sensor->entity, pad, + &csis->entity, CSIS_PAD_SINK, + MEDIA_LNK_FL_IMMUTABLE | + MEDIA_LNK_FL_ENABLED); + if (ret) + return ret; + + v4l2_info(&fmd->v4l2_dev, "created link [%s] => [%s]\n", + sensor->entity.name, csis->entity.name); + + source = NULL; + csi_sensors[pdata->mux_id] = sensor; + break; + + case FIMC_BUS_TYPE_ITU_601...FIMC_BUS_TYPE_ITU_656: + source = &sensor->entity; + pad = 0; + break; + + default: + v4l2_err(&fmd->v4l2_dev, "Wrong bus_type: %x\n", + pdata->sensor_bus_type); + return -EINVAL; + } + if (source == NULL) + continue; + + link_mask = 1 << fimc_id++; + ret = __fimc_md_create_fimc_sink_links(fmd, source, sensor, + pad, link_mask); + } + + for (i = 0; i < CSIS_MAX_ENTITIES; i++) { + if (fmd->csis[i].sd == NULL) + continue; + + source = &fmd->csis[i].sd->entity; + pad = CSIS_PAD_SOURCE; + sensor = csi_sensors[i]; + + link_mask = 1 << fimc_id++; + ret = __fimc_md_create_fimc_sink_links(fmd, source, sensor, + pad, link_mask); + } + + /* Create immutable links b/w each FIMC-LITE's subdev and video node */ + flags = MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED; + for (i = 0; i < FIMC_LITE_MAX_DEVS; i++) { + if (!fmd->fimc_lite[i]) + continue; + source = &fmd->fimc_lite[i]->subdev.entity; + sink = &fmd->fimc_lite[i]->vfd.entity; + ret = media_entity_create_link(source, FLITE_SD_PAD_SOURCE_DMA, + sink, 0, flags); + if (ret) + break; + } + + return 0; +} + +/* + * The peripheral sensor clock management. + */ +static void fimc_md_put_clocks(struct fimc_md *fmd) +{ + int i = FIMC_MAX_CAMCLKS; + + while (--i >= 0) { + if (IS_ERR(fmd->camclk[i].clock)) + continue; + clk_unprepare(fmd->camclk[i].clock); + clk_put(fmd->camclk[i].clock); + fmd->camclk[i].clock = ERR_PTR(-EINVAL); + } +} + +static int fimc_md_get_clocks(struct fimc_md *fmd) +{ + struct device *dev = NULL; + char clk_name[32]; + struct clk *clock; + int ret, i; + + for (i = 0; i < FIMC_MAX_CAMCLKS; i++) + fmd->camclk[i].clock = ERR_PTR(-EINVAL); + + if (fmd->pdev->dev.of_node) + dev = &fmd->pdev->dev; + + for (i = 0; i < FIMC_MAX_CAMCLKS; i++) { + snprintf(clk_name, sizeof(clk_name), "sclk_cam%u", i); + clock = clk_get(dev, clk_name); + + if (IS_ERR(clock)) { + dev_err(&fmd->pdev->dev, "Failed to get clock: %s\n", + clk_name); + ret = PTR_ERR(clock); + break; + } + ret = clk_prepare(clock); + if (ret < 0) { + clk_put(clock); + fmd->camclk[i].clock = ERR_PTR(-EINVAL); + break; + } + fmd->camclk[i].clock = clock; + } + if (ret) + fimc_md_put_clocks(fmd); + + return ret; +} + +static int __fimc_md_set_camclk(struct fimc_md *fmd, + struct fimc_source_info *si, + bool on) +{ + struct fimc_camclk_info *camclk; + int ret = 0; + + if (WARN_ON(si->clk_id >= FIMC_MAX_CAMCLKS) || fmd == NULL) + return -EINVAL; + + camclk = &fmd->camclk[si->clk_id]; + + dbg("camclk %d, f: %lu, use_count: %d, on: %d", + si->clk_id, si->clk_frequency, camclk->use_count, on); + + if (on) { + if (camclk->use_count > 0 && + camclk->frequency != si->clk_frequency) + return -EINVAL; + + if (camclk->use_count++ == 0) { + clk_set_rate(camclk->clock, si->clk_frequency); + camclk->frequency = si->clk_frequency; + ret = clk_enable(camclk->clock); + dbg("Enabled camclk %d: f: %lu", si->clk_id, + clk_get_rate(camclk->clock)); + } + return ret; + } + + if (WARN_ON(camclk->use_count == 0)) + return 0; + + if (--camclk->use_count == 0) { + clk_disable(camclk->clock); + dbg("Disabled camclk %d", si->clk_id); + } + return ret; +} + +/** + * fimc_md_set_camclk - peripheral sensor clock setup + * @sd: sensor subdev to configure sclk_cam clock for + * @on: 1 to enable or 0 to disable the clock + * + * There are 2 separate clock outputs available in the SoC for external + * image processors. These clocks are shared between all registered FIMC + * devices to which sensors can be attached, either directly or through + * the MIPI CSI receiver. The clock is allowed here to be used by + * multiple sensors concurrently if they use same frequency. + * This function should only be called when the graph mutex is held. + */ +static int fimc_md_set_camclk(struct v4l2_subdev *sd, bool on) +{ + struct fimc_source_info *si = v4l2_get_subdev_hostdata(sd); + struct fimc_md *fmd = entity_to_fimc_mdev(&sd->entity); + + return __fimc_md_set_camclk(fmd, si, on); +} + +static int fimc_md_link_notify(struct media_pad *source, + struct media_pad *sink, u32 flags) +{ + struct fimc_lite *fimc_lite = NULL; + struct fimc_pipeline *pipeline; + struct exynos5_pipeline0 *ep; + struct v4l2_subdev *sd; + struct mutex *lock; + int ret = 0, i; + int ref_count; + + if (media_entity_type(sink->entity) != MEDIA_ENT_T_V4L2_SUBDEV) + return 0; + + sd = media_entity_to_v4l2_subdev(sink->entity); + + switch (sd->grp_id) { + case GRP_ID_FLITE: + fimc_lite = v4l2_get_subdevdata(sd); + if (WARN_ON(fimc_lite == NULL)) + return 0; + pipeline = &fimc_lite->pipeline; + lock = &fimc_lite->lock; + break; + default: + return 0; + } + + mutex_lock(lock); + ref_count = fimc_lite->ref_count; + + ep = (struct exynos5_pipeline0 *)pipeline->priv; + if (!ep || !ep->is_init) + return -EINVAL; + + if (!(flags & MEDIA_LNK_FL_ENABLED)) { + if (ref_count > 0) + ret = __fimc_pipeline_close(pipeline); + for (i = 0; i < IDX_MAX; i++) + ep->subdevs[i] = NULL; + } else if (ref_count > 0) { + /* + * Link activation. Enable power of pipeline elements only if + * the pipeline is already in use, i.e. its video node is open. + */ + ret = __fimc_pipeline_open(pipeline, + source->entity, true); + } + + mutex_unlock(lock); + return ret ? -EPIPE : ret; +} + +/** + * fimc_md_sensor_notify - v4l2_device notification from a sensor subdev + * @sd: pointer to a subdev generating the notification + * @notification: the notification type, must be S5P_FIMC_TX_END_NOTIFY + * @arg: pointer to an u32 type integer that stores the frame payload value + * + * Passes the sensor notification to the capture device + */ +static void fimc_md_sensor_notify(struct v4l2_subdev *sd, + unsigned int notification, void *arg) +{ + struct fimc_md *fmd; + struct exynos5_pipeline0 *ep; + struct fimc_pipeline *p; + unsigned long flags; + + fmd = entity_to_fimc_mdev(&sd->entity); + + if (sd == NULL) + return; + + p = media_pipe_to_fimc_pipeline(sd->entity.pipe); + ep = (struct exynos5_pipeline0 *)p->priv; + + spin_lock_irqsave(&fmd->slock, flags); + + if (ep->sensor_notify) + ep->sensor_notify(sd, notification, arg); + + spin_unlock_irqrestore(&fmd->slock, flags); +} + +static int fimc_md_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct v4l2_device *v4l2_dev; + struct fimc_md *fmd; + int ret; + + fmd = devm_kzalloc(dev, sizeof(*fmd), GFP_KERNEL); + if (!fmd) + return -ENOMEM; + + spin_lock_init(&fmd->slock); + fmd->pdev = pdev; + + strlcpy(fmd->media_dev.model, "SAMSUNG EXYNOS5 IS", + sizeof(fmd->media_dev.model)); + fmd->media_dev.link_notify = fimc_md_link_notify; + fmd->media_dev.dev = dev; + + v4l2_dev = &fmd->v4l2_dev; + v4l2_dev->mdev = &fmd->media_dev; + v4l2_dev->notify = fimc_md_sensor_notify; + strlcpy(v4l2_dev->name, "exynos5-fimc-md", sizeof(v4l2_dev->name)); + + ret = v4l2_device_register(dev, &fmd->v4l2_dev); + if (ret < 0) { + v4l2_err(v4l2_dev, "Failed to register v4l2_device: %d\n", ret); + return ret; + } + ret = media_device_register(&fmd->media_dev); + if (ret < 0) { + v4l2_err(v4l2_dev, "Failed to register media dev: %d\n", ret); + goto err_md; + } + ret = fimc_md_get_clocks(fmd); + if (ret) + goto err_clk; + + /* Protect the media graph while we're registering entities */ + mutex_lock(&fmd->media_dev.graph_mutex); + + ret = fimc_md_register_of_platform_entities(fmd, dev->of_node); + if (ret) + goto err_unlock; + + fmd->num_sensors = 0; + ret = fimc_md_of_sensors_register(fmd, dev->of_node); + if (ret) + goto err_unlock; + + ret = fimc_md_create_links(fmd); + if (ret) + goto err_unlock; + ret = v4l2_device_register_subdev_nodes(&fmd->v4l2_dev); + if (ret) + goto err_unlock; + + platform_set_drvdata(pdev, fmd); + mutex_unlock(&fmd->media_dev.graph_mutex); + return 0; + +err_unlock: + mutex_unlock(&fmd->media_dev.graph_mutex); +err_clk: + media_device_unregister(&fmd->media_dev); + fimc_md_put_clocks(fmd); + fimc_md_unregister_entities(fmd); +err_md: + v4l2_device_unregister(&fmd->v4l2_dev); + return ret; +} + +static int fimc_md_remove(struct platform_device *pdev) +{ + struct fimc_md *fmd = platform_get_drvdata(pdev); + + if (!fmd) + return 0; + fimc_md_unregister_entities(fmd); + media_device_unregister(&fmd->media_dev); + fimc_md_put_clocks(fmd); + return 0; +} + +static struct platform_device_id fimc_driver_ids[] __always_unused = { + { .name = "exynos5-fimc-md" }, + { }, +}; +MODULE_DEVICE_TABLE(platform, fimc_driver_ids); + +static const struct of_device_id fimc_md_of_match[] = { + { .compatible = "samsung,exynos5-fimc" }, + { }, +}; +MODULE_DEVICE_TABLE(of, fimc_md_of_match); + +static struct platform_driver fimc_md_driver = { + .probe = fimc_md_probe, + .remove = fimc_md_remove, + .driver = { + .of_match_table = fimc_md_of_match, + .name = "exynos5-fimc-md", + .owner = THIS_MODULE, + } +}; + +static int __init fimc_md_init(void) +{ + request_module("s5p-csis"); + return platform_driver_register(&fimc_md_driver); +} + +static void __exit fimc_md_exit(void) +{ + platform_driver_unregister(&fimc_md_driver); +} + +module_init(fimc_md_init); +module_exit(fimc_md_exit); + +MODULE_AUTHOR("Shaik Ameer Basha "); +MODULE_DESCRIPTION("EXYNOS5 FIMC media device driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/media/platform/exynos5-is/exynos5-mdev.h b/drivers/media/platform/exynos5-is/exynos5-mdev.h new file mode 100644 index 0000000..43621b6 --- /dev/null +++ b/drivers/media/platform/exynos5-is/exynos5-mdev.h @@ -0,0 +1,120 @@ +/* + * Copyright (C) 2011 - 2012 Samsung Electronics Co., Ltd. + * + * 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. + */ + +#ifndef EXYNOS5_MDEVICE_H_ +#define EXYNOS5_MDEVICE_H_ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "fimc-lite.h" +#include "mipi-csis.h" + +#define FIMC_OF_NODE_NAME "fimc" +#define FIMC_LITE_OF_NODE_NAME "fimc-lite" +#define CSIS_OF_NODE_NAME "csis" +#define FIMC_IS_OF_NODE_NAME "fimc-is" + +/* Group IDs of sensor, MIPI-CSIS, FIMC-LITE and the writeback subdevs. */ +#define GRP_ID_SENSOR (1 << 8) +#define GRP_ID_FIMC_IS_SENSOR (1 << 9) +#define GRP_ID_WRITEBACK (1 << 10) +#define GRP_ID_CSIS (1 << 11) +#define GRP_ID_FLITE (1 << 13) +#define GRP_ID_FIMC_IS (1 << 14) + +#define FIMC_MAX_SENSORS 8 +#define FIMC_MAX_CAMCLKS 2 + +enum fimc_subdev_index { + IDX_SENSOR, + IDX_CSIS, + IDX_FLITE, + IDX_FIMC, + IDX_MAX, +}; + +struct fimc_csis_info { + struct v4l2_subdev *sd; + int id; +}; + +struct fimc_camclk_info { + struct clk *clock; + int use_count; + unsigned long frequency; +}; + +/** + * struct fimc_sensor_info - image data source subdev information + * @pdata: sensor's atrributes passed as media device's platform data + * @subdev: image sensor v4l2 subdev + * @host: fimc device the sensor is currently linked to + * + * This data structure applies to image sensor and the writeback subdevs. + */ +struct fimc_sensor_info { + struct fimc_source_info pdata; + struct v4l2_subdev *subdev; + struct fimc_dev *host; +}; + +/** + * struct fimc_md - fimc media device information + * @csis: MIPI CSIS subdevs data + * @sensor: array of registered sensor subdevs + * @num_sensors: actual number of registered sensors + * @camclk: external sensor clock information + * @fimc: array of registered fimc devices + * @media_dev: top level media device + * @v4l2_dev: top level v4l2_device holding up the subdevs + * @pdev: platform device this media device is hooked up into + * @user_subdev_api: true if subdevs are not configured by the host driver + * @slock: spinlock protecting @sensor array + */ +struct fimc_md { + struct fimc_csis_info csis[CSIS_MAX_ENTITIES]; + struct fimc_sensor_info sensor[FIMC_MAX_SENSORS]; + int num_sensors; + struct fimc_camclk_info camclk[FIMC_MAX_CAMCLKS]; + struct fimc_lite *fimc_lite[FIMC_LITE_MAX_DEVS]; + struct media_device media_dev; + struct v4l2_device v4l2_dev; + struct platform_device *pdev; + spinlock_t slock; +}; + +struct exynos5_pipeline0 { + int is_init; + struct fimc_md *fmd; + struct v4l2_subdev *subdevs[IDX_MAX]; + void (*sensor_notify)(struct v4l2_subdev *sd, + unsigned int notification, void *arg); +}; + +#define is_subdev_pad(pad) (pad == NULL || \ + media_entity_type(pad->entity) == MEDIA_ENT_T_V4L2_SUBDEV) + +#define me_subtype(me) \ + ((me->type) & (MEDIA_ENT_TYPE_MASK | MEDIA_ENT_SUBTYPE_MASK)) + +#define subdev_has_devnode(__sd) (__sd->flags & V4L2_SUBDEV_FL_HAS_DEVNODE) + +static inline struct fimc_md *entity_to_fimc_mdev(struct media_entity *me) +{ + return me->parent == NULL ? NULL : + container_of(me->parent, struct fimc_md, media_dev); +} + +#endif /* EXYNOS5_MDEVICE_H_ */