--- /dev/null
+/*
+ * Copyright (C) 2012 Texas Instruments Inc
+ *
+ * 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 version 2.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Contributors:
+ * Manjunath Hadli <manjunath.hadli@ti.com>
+ * Prabhakar Lad <prabhakar.lad@ti.com>
+ *
+ *
+ * Driver name : VPFE Capture driver
+ * VPFE Capture driver allows applications to capture and stream video
+ * frames on DaVinci SoCs (DM6446, DM355 etc) from a YUV source such as
+ * TVP5146 or Raw Bayer RGB image data from an image sensor
+ * such as Microns' MT9T001, MT9T031 etc.
+ *
+ * These SoCs have, in common, a Video Processing Subsystem (VPSS) that
+ * consists of a Video Processing Front End (VPFE) for capturing
+ * video/raw image data and Video Processing Back End (VPBE) for displaying
+ * YUV data through an in-built analog encoder or Digital LCD port. This
+ * driver is for capture through VPFE. A typical EVM using these SoCs have
+ * following high level configuration.
+ *
+ * decoder(TVP5146/ YUV/
+ * MT9T001) --> Raw Bayer RGB ---> MUX -> VPFE (CCDC/ISIF)
+ * data input | |
+ * V |
+ * SDRAM |
+ * V
+ * Image Processor
+ * |
+ * V
+ * SDRAM
+ * The data flow happens from a decoder connected to the VPFE over a
+ * YUV embedded (BT.656/BT.1120) or separate sync or raw bayer rgb interface
+ * and to the input of VPFE through an optional MUX (if more inputs are
+ * to be interfaced on the EVM). The input data is first passed through
+ * CCDC (CCD Controller, a.k.a Image Sensor Interface, ISIF). The CCDC
+ * does very little or no processing on YUV data and does pre-process Raw
+ * Bayer RGB data through modules such as Defect Pixel Correction (DFC)
+ * Color Space Conversion (CSC), data gain/offset etc. After this, data
+ * can be written to SDRAM or can be connected to the image processing
+ * block such as IPIPE (on DM355/DM365 only).
+ *
+ * Features supported
+ * - MMAP IO
+ * - USERPTR IO
+ * - Capture using TVP5146 over BT.656
+ * - Support for interfacing decoders using sub device model
+ * - Work with DM365 or DM355 or DM6446 CCDC to do Raw Bayer
+ * RGB/YUV data capture to SDRAM.
+ * - Chaining of Image Processor
+ * - SINGLE-SHOT mode
+ */
+
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+
+#include "vpfe.h"
+#include "vpfe_mc_capture.h"
+
+static bool debug;
+static bool interface;
+
+module_param(interface, bool, S_IRUGO);
+module_param(debug, bool, 0644);
+
+/**
+ * VPFE capture can be used for capturing video such as from TVP5146 or TVP7002
+ * and for capture raw bayer data from camera sensors such as mt9p031. At this
+ * point there is problem in co-existence of mt9p031 and tvp5146 due to i2c
+ * address collision. So set the variable below from bootargs to do either video
+ * capture or camera capture.
+ * interface = 0 - video capture (from TVP514x or such),
+ * interface = 1 - Camera capture (from mt9p031 or such)
+ * Re-visit this when we fix the co-existence issue
+ */
+MODULE_PARM_DESC(interface, "interface 0-1 (default:0)");
+MODULE_PARM_DESC(debug, "Debug level 0-1");
+
+MODULE_DESCRIPTION("VPFE Video for Linux Capture Driver");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Texas Instruments");
+
+/* map mbus_fmt to pixelformat */
+void mbus_to_pix(const struct v4l2_mbus_framefmt *mbus,
+ struct v4l2_pix_format *pix)
+{
+ switch (mbus->code) {
+ case MEDIA_BUS_FMT_UYVY8_2X8:
+ pix->pixelformat = V4L2_PIX_FMT_UYVY;
+ pix->bytesperline = pix->width * 2;
+ break;
+
+ case MEDIA_BUS_FMT_YUYV8_2X8:
+ pix->pixelformat = V4L2_PIX_FMT_YUYV;
+ pix->bytesperline = pix->width * 2;
+ break;
+
+ case MEDIA_BUS_FMT_YUYV10_1X20:
+ pix->pixelformat = V4L2_PIX_FMT_UYVY;
+ pix->bytesperline = pix->width * 2;
+ break;
+
+ case MEDIA_BUS_FMT_SGRBG12_1X12:
+ pix->pixelformat = V4L2_PIX_FMT_SBGGR16;
+ pix->bytesperline = pix->width * 2;
+ break;
+
+ case MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8:
+ pix->pixelformat = V4L2_PIX_FMT_SGRBG10DPCM8;
+ pix->bytesperline = pix->width;
+ break;
+
+ case MEDIA_BUS_FMT_SGRBG10_ALAW8_1X8:
+ pix->pixelformat = V4L2_PIX_FMT_SGRBG10ALAW8;
+ pix->bytesperline = pix->width;
+ break;
+
+ case MEDIA_BUS_FMT_YDYUYDYV8_1X16:
+ pix->pixelformat = V4L2_PIX_FMT_NV12;
+ pix->bytesperline = pix->width;
+ break;
+
+ case MEDIA_BUS_FMT_Y8_1X8:
+ pix->pixelformat = V4L2_PIX_FMT_GREY;
+ pix->bytesperline = pix->width;
+ break;
+
+ case MEDIA_BUS_FMT_UV8_1X8:
+ pix->pixelformat = V4L2_PIX_FMT_UV8;
+ pix->bytesperline = pix->width;
+ break;
+
+ default:
+ pr_err("Invalid mbus code set\n");
+ }
+ /* pitch should be 32 bytes aligned */
+ pix->bytesperline = ALIGN(pix->bytesperline, 32);
+ if (pix->pixelformat == V4L2_PIX_FMT_NV12)
+ pix->sizeimage = pix->bytesperline * pix->height +
+ ((pix->bytesperline * pix->height) >> 1);
+ else
+ pix->sizeimage = pix->bytesperline * pix->height;
+}
+
+/* ISR for VINT0*/
+static irqreturn_t vpfe_isr(int irq, void *dev_id)
+{
+ struct vpfe_device *vpfe_dev = dev_id;
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_isr\n");
+ vpfe_isif_buffer_isr(&vpfe_dev->vpfe_isif);
+ vpfe_resizer_buffer_isr(&vpfe_dev->vpfe_resizer);
+ return IRQ_HANDLED;
+}
+
+/* vpfe_vdint1_isr() - isr handler for VINT1 interrupt */
+static irqreturn_t vpfe_vdint1_isr(int irq, void *dev_id)
+{
+ struct vpfe_device *vpfe_dev = dev_id;
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_vdint1_isr\n");
+ vpfe_isif_vidint1_isr(&vpfe_dev->vpfe_isif);
+ return IRQ_HANDLED;
+}
+
+/* vpfe_imp_dma_isr() - ISR for ipipe dma completion */
+static irqreturn_t vpfe_imp_dma_isr(int irq, void *dev_id)
+{
+ struct vpfe_device *vpfe_dev = dev_id;
+
+ v4l2_dbg(1, debug, &vpfe_dev->v4l2_dev, "vpfe_imp_dma_isr\n");
+ vpfe_ipipeif_ss_buffer_isr(&vpfe_dev->vpfe_ipipeif);
+ vpfe_resizer_dma_isr(&vpfe_dev->vpfe_resizer);
+ return IRQ_HANDLED;
+}
+
+/*
+ * vpfe_disable_clock() - Disable clocks for vpfe capture driver
+ * @vpfe_dev - ptr to vpfe capture device
+ *
+ * Disables clocks defined in vpfe configuration. The function
+ * assumes that at least one clock is to be defined which is
+ * true as of now.
+ */
+static void vpfe_disable_clock(struct vpfe_device *vpfe_dev)
+{
+ struct vpfe_config *vpfe_cfg = vpfe_dev->cfg;
+ int i;
+
+ for (i = 0; i < vpfe_cfg->num_clocks; i++) {
+ clk_disable_unprepare(vpfe_dev->clks[i]);
+ clk_put(vpfe_dev->clks[i]);
+ }
+ kzfree(vpfe_dev->clks);
+ v4l2_info(vpfe_dev->pdev->driver, "vpfe capture clocks disabled\n");
+}
+
+/*
+ * vpfe_enable_clock() - Enable clocks for vpfe capture driver
+ * @vpfe_dev - ptr to vpfe capture device
+ *
+ * Enables clocks defined in vpfe configuration. The function
+ * assumes that at least one clock is to be defined which is
+ * true as of now.
+ */
+static int vpfe_enable_clock(struct vpfe_device *vpfe_dev)
+{
+ struct vpfe_config *vpfe_cfg = vpfe_dev->cfg;
+ int ret = -EFAULT;
+ int i;
+
+ if (!vpfe_cfg->num_clocks)
+ return 0;
+
+ vpfe_dev->clks = kcalloc(vpfe_cfg->num_clocks,
+ sizeof(struct clock *), GFP_KERNEL);
+ if (vpfe_dev->clks == NULL)
+ return -ENOMEM;
+
+ for (i = 0; i < vpfe_cfg->num_clocks; i++) {
+ if (vpfe_cfg->clocks[i] == NULL) {
+ v4l2_err(vpfe_dev->pdev->driver,
+ "clock %s is not defined in vpfe config\n",
+ vpfe_cfg->clocks[i]);
+ goto out;
+ }
+
+ vpfe_dev->clks[i] =
+ clk_get(vpfe_dev->pdev, vpfe_cfg->clocks[i]);
+ if (IS_ERR(vpfe_dev->clks[i])) {
+ v4l2_err(vpfe_dev->pdev->driver,
+ "Failed to get clock %s\n",
+ vpfe_cfg->clocks[i]);
+ goto out;
+ }
+
+ if (clk_prepare_enable(vpfe_dev->clks[i])) {
+ v4l2_err(vpfe_dev->pdev->driver,
+ "vpfe clock %s not enabled\n",
+ vpfe_cfg->clocks[i]);
+ goto out;
+ }
+
+ v4l2_info(vpfe_dev->pdev->driver, "vpss clock %s enabled",
+ vpfe_cfg->clocks[i]);
+ }
+
+ return 0;
+out:
+ for (i = 0; i < vpfe_cfg->num_clocks; i++)
+ if (!IS_ERR(vpfe_dev->clks[i])) {
+ clk_disable_unprepare(vpfe_dev->clks[i]);
+ clk_put(vpfe_dev->clks[i]);
+ }
+
+ v4l2_err(vpfe_dev->pdev->driver, "Failed to enable clocks\n");
+ kzfree(vpfe_dev->clks);
+
+ return ret;
+}
+
+/*
+ * vpfe_detach_irq() - Detach IRQs for vpfe capture driver
+ * @vpfe_dev - ptr to vpfe capture device
+ *
+ * Detach all IRQs defined in vpfe configuration.
+ */
+static void vpfe_detach_irq(struct vpfe_device *vpfe_dev)
+{
+ free_irq(vpfe_dev->ccdc_irq0, vpfe_dev);
+ free_irq(vpfe_dev->ccdc_irq1, vpfe_dev);
+ free_irq(vpfe_dev->imp_dma_irq, vpfe_dev);
+}
+
+/*
+ * vpfe_attach_irq() - Attach IRQs for vpfe capture driver
+ * @vpfe_dev - ptr to vpfe capture device
+ *
+ * Attach all IRQs defined in vpfe configuration.
+ */
+static int vpfe_attach_irq(struct vpfe_device *vpfe_dev)
+{
+ int ret = 0;
+
+ ret = request_irq(vpfe_dev->ccdc_irq0, vpfe_isr, 0,
+ "vpfe_capture0", vpfe_dev);
+ if (ret < 0) {
+ v4l2_err(&vpfe_dev->v4l2_dev,
+ "Error: requesting VINT0 interrupt\n");
+ return ret;
+ }
+
+ ret = request_irq(vpfe_dev->ccdc_irq1, vpfe_vdint1_isr, 0,
+ "vpfe_capture1", vpfe_dev);
+ if (ret < 0) {
+ v4l2_err(&vpfe_dev->v4l2_dev,
+ "Error: requesting VINT1 interrupt\n");
+ free_irq(vpfe_dev->ccdc_irq0, vpfe_dev);
+ return ret;
+ }
+
+ ret = request_irq(vpfe_dev->imp_dma_irq, vpfe_imp_dma_isr,
+ 0, "Imp_Sdram_Irq", vpfe_dev);
+ if (ret < 0) {
+ v4l2_err(&vpfe_dev->v4l2_dev,
+ "Error: requesting IMP IRQ interrupt\n");
+ free_irq(vpfe_dev->ccdc_irq1, vpfe_dev);
+ free_irq(vpfe_dev->ccdc_irq0, vpfe_dev);
+ return ret;
+ }
+
+ return 0;
+}
+
+/*
+ * register_i2c_devices() - register all i2c v4l2 subdevs
+ * @vpfe_dev - ptr to vpfe capture device
+ *
+ * register all i2c v4l2 subdevs
+ */
+static int register_i2c_devices(struct vpfe_device *vpfe_dev)
+{
+ struct vpfe_ext_subdev_info *sdinfo;
+ struct vpfe_config *vpfe_cfg;
+ struct i2c_adapter *i2c_adap;
+ unsigned int num_subdevs;
+ int ret;
+ int i;
+ int k;
+
+ vpfe_cfg = vpfe_dev->cfg;
+ i2c_adap = i2c_get_adapter(1);
+ num_subdevs = vpfe_cfg->num_subdevs;
+ vpfe_dev->sd =
+ kcalloc(num_subdevs, sizeof(struct v4l2_subdev *),
+ GFP_KERNEL);
+ if (vpfe_dev->sd == NULL)
+ return -ENOMEM;
+
+ for (i = 0, k = 0; i < num_subdevs; i++) {
+ sdinfo = &vpfe_cfg->sub_devs[i];
+ /*
+ * register subdevices based on interface setting. Currently
+ * tvp5146 and mt9p031 cannot co-exists due to i2c address
+ * conflicts. So only one of them is registered. Re-visit this
+ * once we have support for i2c switch handling in i2c driver
+ * framework
+ */
+ if (interface == sdinfo->is_camera) {
+ /* setup input path */
+ if (vpfe_cfg->setup_input &&
+ vpfe_cfg->setup_input(sdinfo->grp_id) < 0) {
+ ret = -EFAULT;
+ v4l2_info(&vpfe_dev->v4l2_dev,
+ "could not setup input for %s\n",
+ sdinfo->module_name);
+ goto probe_sd_out;
+ }
+ /* Load up the subdevice */
+ vpfe_dev->sd[k] =
+ v4l2_i2c_new_subdev_board(&vpfe_dev->v4l2_dev,
+ i2c_adap, &sdinfo->board_info,
+ NULL);
+ if (vpfe_dev->sd[k]) {
+ v4l2_info(&vpfe_dev->v4l2_dev,
+ "v4l2 sub device %s registered\n",
+ sdinfo->module_name);
+
+ vpfe_dev->sd[k]->grp_id = sdinfo->grp_id;
+ k++;
+
+ sdinfo->registered = 1;
+ }
+ } else {
+ v4l2_info(&vpfe_dev->v4l2_dev,
+ "v4l2 sub device %s is not registered\n",
+ sdinfo->module_name);
+ }
+ }
+ vpfe_dev->num_ext_subdevs = k;
+
+ return 0;
+
+probe_sd_out:
+ kzfree(vpfe_dev->sd);
+
+ return ret;
+}
+
+/*
+ * vpfe_register_entities() - register all v4l2 subdevs and media entities
+ * @vpfe_dev - ptr to vpfe capture device
+ *
+ * register all v4l2 subdevs, media entities, and creates links
+ * between entities
+ */
+static int vpfe_register_entities(struct vpfe_device *vpfe_dev)
+{
+ unsigned int flags = 0;
+ int ret;
+ int i;
+
+ /* register i2c devices first */
+ ret = register_i2c_devices(vpfe_dev);
+ if (ret)
+ return ret;
+
+ /* register rest of the sub-devs */
+ ret = vpfe_isif_register_entities(&vpfe_dev->vpfe_isif,
+ &vpfe_dev->v4l2_dev);
+ if (ret)
+ return ret;
+
+ ret = vpfe_ipipeif_register_entities(&vpfe_dev->vpfe_ipipeif,
+ &vpfe_dev->v4l2_dev);
+ if (ret)
+ goto out_isif_register;
+
+ ret = vpfe_ipipe_register_entities(&vpfe_dev->vpfe_ipipe,
+ &vpfe_dev->v4l2_dev);
+ if (ret)
+ goto out_ipipeif_register;
+
+ ret = vpfe_resizer_register_entities(&vpfe_dev->vpfe_resizer,
+ &vpfe_dev->v4l2_dev);
+ if (ret)
+ goto out_ipipe_register;
+
+ /* create links now, starting with external(i2c) entities */
+ for (i = 0; i < vpfe_dev->num_ext_subdevs; i++)
+ /* if entity has no pads (ex: amplifier),
+ cant establish link */
+ if (vpfe_dev->sd[i]->entity.num_pads) {
+ ret = media_entity_create_link(&vpfe_dev->sd[i]->entity,
+ 0, &vpfe_dev->vpfe_isif.subdev.entity,
+ 0, flags);
+ if (ret < 0)
+ goto out_resizer_register;
+ }
+
+ ret = media_entity_create_link(&vpfe_dev->vpfe_isif.subdev.entity, 1,
+ &vpfe_dev->vpfe_ipipeif.subdev.entity,
+ 0, flags);
+ if (ret < 0)
+ goto out_resizer_register;
+
+ ret = media_entity_create_link(&vpfe_dev->vpfe_ipipeif.subdev.entity, 1,
+ &vpfe_dev->vpfe_ipipe.subdev.entity,
+ 0, flags);
+ if (ret < 0)
+ goto out_resizer_register;
+
+ ret = media_entity_create_link(&vpfe_dev->vpfe_ipipe.subdev.entity,
+ 1, &vpfe_dev->vpfe_resizer.crop_resizer.subdev.entity,
+ 0, flags);
+ if (ret < 0)
+ goto out_resizer_register;
+
+ ret = media_entity_create_link(&vpfe_dev->vpfe_ipipeif.subdev.entity, 1,
+ &vpfe_dev->vpfe_resizer.crop_resizer.subdev.entity,
+ 0, flags);
+ if (ret < 0)
+ goto out_resizer_register;
+
+ ret = v4l2_device_register_subdev_nodes(&vpfe_dev->v4l2_dev);
+ if (ret < 0)
+ goto out_resizer_register;
+
+ return 0;
+
+out_resizer_register:
+ vpfe_resizer_unregister_entities(&vpfe_dev->vpfe_resizer);
+out_ipipe_register:
+ vpfe_ipipe_unregister_entities(&vpfe_dev->vpfe_ipipe);
+out_ipipeif_register:
+ vpfe_ipipeif_unregister_entities(&vpfe_dev->vpfe_ipipeif);
+out_isif_register:
+ vpfe_isif_unregister_entities(&vpfe_dev->vpfe_isif);
+
+ return ret;
+}
+
+/*
+ * vpfe_unregister_entities() - unregister all v4l2 subdevs and media entities
+ * @vpfe_dev - ptr to vpfe capture device
+ *
+ * unregister all v4l2 subdevs and media entities
+ */
+static void vpfe_unregister_entities(struct vpfe_device *vpfe_dev)
+{
+ vpfe_isif_unregister_entities(&vpfe_dev->vpfe_isif);
+ vpfe_ipipeif_unregister_entities(&vpfe_dev->vpfe_ipipeif);
+ vpfe_ipipe_unregister_entities(&vpfe_dev->vpfe_ipipe);
+ vpfe_resizer_unregister_entities(&vpfe_dev->vpfe_resizer);
+}
+
+/*
+ * vpfe_cleanup_modules() - cleanup all non-i2c v4l2 subdevs
+ * @vpfe_dev - ptr to vpfe capture device
+ * @pdev - pointer to platform device
+ *
+ * cleanup all v4l2 subdevs
+ */
+static void vpfe_cleanup_modules(struct vpfe_device *vpfe_dev,
+ struct platform_device *pdev)
+{
+ vpfe_isif_cleanup(&vpfe_dev->vpfe_isif, pdev);
+ vpfe_ipipeif_cleanup(&vpfe_dev->vpfe_ipipeif, pdev);
+ vpfe_ipipe_cleanup(&vpfe_dev->vpfe_ipipe, pdev);
+ vpfe_resizer_cleanup(&vpfe_dev->vpfe_resizer, pdev);
+}
+
+/*
+ * vpfe_initialize_modules() - initialize all non-i2c v4l2 subdevs
+ * @vpfe_dev - ptr to vpfe capture device
+ * @pdev - pointer to platform device
+ *
+ * intialize all v4l2 subdevs and media entities
+ */
+static int vpfe_initialize_modules(struct vpfe_device *vpfe_dev,
+ struct platform_device *pdev)
+{
+ int ret;
+
+ ret = vpfe_isif_init(&vpfe_dev->vpfe_isif, pdev);
+ if (ret)
+ return ret;
+
+ ret = vpfe_ipipeif_init(&vpfe_dev->vpfe_ipipeif, pdev);
+ if (ret)
+ goto out_isif_init;
+
+ ret = vpfe_ipipe_init(&vpfe_dev->vpfe_ipipe, pdev);
+ if (ret)
+ goto out_ipipeif_init;
+
+ ret = vpfe_resizer_init(&vpfe_dev->vpfe_resizer, pdev);
+ if (ret)
+ goto out_ipipe_init;
+
+ return 0;
+
+out_ipipe_init:
+ vpfe_ipipe_cleanup(&vpfe_dev->vpfe_ipipe, pdev);
+out_ipipeif_init:
+ vpfe_ipipeif_cleanup(&vpfe_dev->vpfe_ipipeif, pdev);
+out_isif_init:
+ vpfe_isif_cleanup(&vpfe_dev->vpfe_isif, pdev);
+
+ return ret;
+}
+
+/*
+ * vpfe_probe() : vpfe probe function
+ * @pdev: platform device pointer
+ *
+ * This function creates device entries by register itself to the V4L2 driver
+ * and initializes fields of each device objects
+ */
+static int vpfe_probe(struct platform_device *pdev)
+{
+ struct vpfe_device *vpfe_dev;
+ struct resource *res1;
+ int ret = -ENOMEM;
+
+ vpfe_dev = kzalloc(sizeof(*vpfe_dev), GFP_KERNEL);
+ if (!vpfe_dev)
+ return ret;
+
+ if (pdev->dev.platform_data == NULL) {
+ v4l2_err(pdev->dev.driver, "Unable to get vpfe config\n");
+ ret = -ENOENT;
+ goto probe_free_dev_mem;
+ }
+
+ vpfe_dev->cfg = pdev->dev.platform_data;
+ if (vpfe_dev->cfg->card_name == NULL ||
+ vpfe_dev->cfg->sub_devs == NULL) {
+ v4l2_err(pdev->dev.driver, "null ptr in vpfe_cfg\n");
+ ret = -ENOENT;
+ goto probe_free_dev_mem;
+ }
+
+ /* Get VINT0 irq resource */
+ res1 = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (!res1) {
+ v4l2_err(pdev->dev.driver,
+ "Unable to get interrupt for VINT0\n");
+ ret = -ENOENT;
+ goto probe_free_dev_mem;
+ }
+ vpfe_dev->ccdc_irq0 = res1->start;
+
+ /* Get VINT1 irq resource */
+ res1 = platform_get_resource(pdev, IORESOURCE_IRQ, 1);
+ if (!res1) {
+ v4l2_err(pdev->dev.driver,
+ "Unable to get interrupt for VINT1\n");
+ ret = -ENOENT;
+ goto probe_free_dev_mem;
+ }
+ vpfe_dev->ccdc_irq1 = res1->start;
+
+ /* Get DMA irq resource */
+ res1 = platform_get_resource(pdev, IORESOURCE_IRQ, 2);
+ if (!res1) {
+ v4l2_err(pdev->dev.driver,
+ "Unable to get interrupt for DMA\n");
+ ret = -ENOENT;
+ goto probe_free_dev_mem;
+ }
+ vpfe_dev->imp_dma_irq = res1->start;
+
+ vpfe_dev->pdev = &pdev->dev;
+
+ /* enable vpss clocks */
+ ret = vpfe_enable_clock(vpfe_dev);
+ if (ret)
+ goto probe_free_dev_mem;
+
+ ret = vpfe_initialize_modules(vpfe_dev, pdev);
+ if (ret)
+ goto probe_disable_clock;
+
+ vpfe_dev->media_dev.dev = vpfe_dev->pdev;
+ strcpy((char *)&vpfe_dev->media_dev.model, "davinci-media");
+
+ ret = media_device_register(&vpfe_dev->media_dev);
+ if (ret) {
+ v4l2_err(pdev->dev.driver,
+ "Unable to register media device.\n");
+ goto probe_out_entities_cleanup;
+ }
+
+ vpfe_dev->v4l2_dev.mdev = &vpfe_dev->media_dev;
+ ret = v4l2_device_register(&pdev->dev, &vpfe_dev->v4l2_dev);
+ if (ret) {
+ v4l2_err(pdev->dev.driver, "Unable to register v4l2 device.\n");
+ goto probe_out_media_unregister;
+ }
+
+ v4l2_info(&vpfe_dev->v4l2_dev, "v4l2 device registered\n");
+ /* set the driver data in platform device */
+ platform_set_drvdata(pdev, vpfe_dev);
+ /* register subdevs/entities */
+ ret = vpfe_register_entities(vpfe_dev);
+ if (ret)
+ goto probe_out_v4l2_unregister;
+
+ ret = vpfe_attach_irq(vpfe_dev);
+ if (ret)
+ goto probe_out_entities_unregister;
+
+ return 0;
+
+probe_out_entities_unregister:
+ vpfe_unregister_entities(vpfe_dev);
+ kzfree(vpfe_dev->sd);
+probe_out_v4l2_unregister:
+ v4l2_device_unregister(&vpfe_dev->v4l2_dev);
+probe_out_media_unregister:
+ media_device_unregister(&vpfe_dev->media_dev);
+probe_out_entities_cleanup:
+ vpfe_cleanup_modules(vpfe_dev, pdev);
+probe_disable_clock:
+ vpfe_disable_clock(vpfe_dev);
+probe_free_dev_mem:
+ kzfree(vpfe_dev);
+
+ return ret;
+}
+
+/*
+ * vpfe_remove : This function un-registers device from V4L2 driver
+ */
+static int vpfe_remove(struct platform_device *pdev)
+{
+ struct vpfe_device *vpfe_dev = platform_get_drvdata(pdev);
+
+ v4l2_info(pdev->dev.driver, "vpfe_remove\n");
+
+ kzfree(vpfe_dev->sd);
+ vpfe_detach_irq(vpfe_dev);
+ vpfe_unregister_entities(vpfe_dev);
+ vpfe_cleanup_modules(vpfe_dev, pdev);
+ v4l2_device_unregister(&vpfe_dev->v4l2_dev);
+ media_device_unregister(&vpfe_dev->media_dev);
+ vpfe_disable_clock(vpfe_dev);
+ kzfree(vpfe_dev);
+
+ return 0;
+}
+
+static struct platform_driver vpfe_driver = {
+ .driver = {
+ .name = CAPTURE_DRV_NAME,
+ },
+ .probe = vpfe_probe,
+ .remove = vpfe_remove,
+};
+
+module_platform_driver(vpfe_driver);
Code Review / kvmfornfv.git / blobdiff