diff options
Diffstat (limited to 'drivers/media/video/mxc/capture/ipu_still.c')
| -rw-r--r-- | drivers/media/video/mxc/capture/ipu_still.c | 268 |
1 files changed, 268 insertions, 0 deletions
diff --git a/drivers/media/video/mxc/capture/ipu_still.c b/drivers/media/video/mxc/capture/ipu_still.c new file mode 100644 index 000000000000..ded24623ce2a --- /dev/null +++ b/drivers/media/video/mxc/capture/ipu_still.c @@ -0,0 +1,268 @@ +/* + * Copyright 2004-2010 Freescale Semiconductor, Inc. All Rights Reserved. + */ + +/* + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + +/*! + * @file ipu_still.c + * + * @brief IPU Use case for still image capture + * + * @ingroup IPU + */ + +#include <linux/ipu.h> +#include <linux/semaphore.h> +#include <linux/ipu.h> +#include "mxc_v4l2_capture.h" +#include "ipu_prp_sw.h" + +static int callback_eof_flag; +#ifndef CONFIG_MXC_IPU_V1 +static int buffer_num; +#endif + +#ifdef CONFIG_MXC_IPU_V1 +static int callback_flag; +/* + * Function definitions + */ +/*! + * CSI EOF callback function. + * + * @param irq int irq line + * @param dev_id void * device id + * + * @return status IRQ_HANDLED for handled + */ +static irqreturn_t prp_csi_eof_callback(int irq, void *dev_id) +{ + ipu_select_buffer(CSI_MEM, IPU_OUTPUT_BUFFER, + callback_flag%2 ? 1 : 0); + if (callback_flag == 0) + ipu_enable_channel(CSI_MEM); + + callback_flag++; + return IRQ_HANDLED; +} +#endif + +/*! + * CSI callback function. + * + * @param irq int irq line + * @param dev_id void * device id + * + * @return status IRQ_HANDLED for handled + */ +static irqreturn_t prp_still_callback(int irq, void *dev_id) +{ + cam_data *cam = (cam_data *) dev_id; + + callback_eof_flag++; + if (callback_eof_flag < 5) { +#ifndef CONFIG_MXC_IPU_V1 + buffer_num = (buffer_num == 0) ? 1 : 0; + ipu_select_buffer(CSI_MEM, IPU_OUTPUT_BUFFER, buffer_num); +#endif + } else { + cam->still_counter++; + wake_up_interruptible(&cam->still_queue); + } + + return IRQ_HANDLED; +} + +/*! + * start csi->mem task + * @param private struct cam_data * mxc capture instance + * + * @return status + */ +static int prp_still_start(void *private) +{ + cam_data *cam = (cam_data *) private; + u32 pixel_fmt; + int err; + ipu_channel_params_t params; + + if (cam->v2f.fmt.pix.pixelformat == V4L2_PIX_FMT_YUV420) + pixel_fmt = IPU_PIX_FMT_YUV420P; + else if (cam->v2f.fmt.pix.pixelformat == V4L2_PIX_FMT_NV12) + pixel_fmt = IPU_PIX_FMT_NV12; + else if (cam->v2f.fmt.pix.pixelformat == V4L2_PIX_FMT_YUV422P) + pixel_fmt = IPU_PIX_FMT_YUV422P; + else if (cam->v2f.fmt.pix.pixelformat == V4L2_PIX_FMT_UYVY) + pixel_fmt = IPU_PIX_FMT_UYVY; + else if (cam->v2f.fmt.pix.pixelformat == V4L2_PIX_FMT_YUYV) + pixel_fmt = IPU_PIX_FMT_YUYV; + else if (cam->v2f.fmt.pix.pixelformat == V4L2_PIX_FMT_BGR24) + pixel_fmt = IPU_PIX_FMT_BGR24; + else if (cam->v2f.fmt.pix.pixelformat == V4L2_PIX_FMT_RGB24) + pixel_fmt = IPU_PIX_FMT_RGB24; + else if (cam->v2f.fmt.pix.pixelformat == V4L2_PIX_FMT_RGB565) + pixel_fmt = IPU_PIX_FMT_RGB565; + else if (cam->v2f.fmt.pix.pixelformat == V4L2_PIX_FMT_BGR32) + pixel_fmt = IPU_PIX_FMT_BGR32; + else if (cam->v2f.fmt.pix.pixelformat == V4L2_PIX_FMT_RGB32) + pixel_fmt = IPU_PIX_FMT_RGB32; + else { + printk(KERN_ERR "format not supported\n"); + return -EINVAL; + } + + ipu_csi_enable_mclk_if(CSI_MCLK_RAW, cam->csi, true, true); + + memset(¶ms, 0, sizeof(params)); + err = ipu_init_channel(CSI_MEM, ¶ms); + if (err != 0) + return err; + + err = ipu_init_channel_buffer(CSI_MEM, IPU_OUTPUT_BUFFER, + pixel_fmt, cam->v2f.fmt.pix.width, + cam->v2f.fmt.pix.height, + cam->v2f.fmt.pix.width, IPU_ROTATE_NONE, + cam->still_buf[0], cam->still_buf[1], + 0, 0); + if (err != 0) + return err; + +#ifdef CONFIG_MXC_IPU_V1 + ipu_clear_irq(IPU_IRQ_SENSOR_OUT_EOF); + err = ipu_request_irq(IPU_IRQ_SENSOR_OUT_EOF, prp_still_callback, + 0, "Mxc Camera", cam); + if (err != 0) { + printk(KERN_ERR "Error registering irq.\n"); + return err; + } + callback_flag = 0; + callback_eof_flag = 0; + ipu_clear_irq(IPU_IRQ_SENSOR_EOF); + err = ipu_request_irq(IPU_IRQ_SENSOR_EOF, prp_csi_eof_callback, + 0, "Mxc Camera", NULL); + if (err != 0) { + printk(KERN_ERR "Error IPU_IRQ_SENSOR_EOF \n"); + return err; + } +#else + callback_eof_flag = 0; + buffer_num = 0; + + ipu_clear_irq(IPU_IRQ_CSI0_OUT_EOF); + err = ipu_request_irq(IPU_IRQ_CSI0_OUT_EOF, prp_still_callback, + 0, "Mxc Camera", cam); + if (err != 0) { + printk(KERN_ERR "Error registering irq.\n"); + return err; + } + + ipu_select_buffer(CSI_MEM, IPU_OUTPUT_BUFFER, 0); + ipu_enable_channel(CSI_MEM); + ipu_enable_csi(cam->csi); +#endif + + return err; +} + +/*! + * stop csi->mem encoder task + * @param private struct cam_data * mxc capture instance + * + * @return status + */ +static int prp_still_stop(void *private) +{ + cam_data *cam = (cam_data *) private; + int err = 0; + +#ifdef CONFIG_MXC_IPU_V1 + ipu_free_irq(IPU_IRQ_SENSOR_EOF, NULL); + ipu_free_irq(IPU_IRQ_SENSOR_OUT_EOF, cam); +#else + ipu_free_irq(IPU_IRQ_CSI0_OUT_EOF, cam); +#endif + + ipu_disable_csi(cam->csi); + ipu_disable_channel(CSI_MEM, true); + ipu_uninit_channel(CSI_MEM); + ipu_csi_enable_mclk_if(CSI_MCLK_RAW, cam->csi, false, false); + + return err; +} + +/*! + * function to select CSI_MEM as the working path + * + * @param private struct cam_data * mxc capture instance + * + * @return status + */ +int prp_still_select(void *private) +{ + cam_data *cam = (cam_data *) private; + + if (cam) { + cam->csi_start = prp_still_start; + cam->csi_stop = prp_still_stop; + } + + return 0; +} + +/*! + * function to de-select CSI_MEM as the working path + * + * @param private struct cam_data * mxc capture instance + * + * @return status + */ +int prp_still_deselect(void *private) +{ + cam_data *cam = (cam_data *) private; + int err = 0; + + err = prp_still_stop(cam); + + if (cam) { + cam->csi_start = NULL; + cam->csi_stop = NULL; + } + + return err; +} + +/*! + * Init the Encorder channels + * + * @return Error code indicating success or failure + */ +__init int prp_still_init(void) +{ + return 0; +} + +/*! + * Deinit the Encorder channels + * + */ +void __exit prp_still_exit(void) +{ +} + +module_init(prp_still_init); +module_exit(prp_still_exit); + +EXPORT_SYMBOL(prp_still_select); +EXPORT_SYMBOL(prp_still_deselect); + +MODULE_AUTHOR("Freescale Semiconductor, Inc."); +MODULE_DESCRIPTION("IPU PRP STILL IMAGE Driver"); +MODULE_LICENSE("GPL"); |