| /* |
| * Copyright 2009-2015 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_csi_enc.c |
| * |
| * @brief CSI Use case for video capture |
| * |
| * @ingroup IPU |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/platform_device.h> |
| #include <linux/dma-mapping.h> |
| #include <linux/ipu.h> |
| #include <linux/mipi_csi2.h> |
| #include "mxc_v4l2_capture.h" |
| #include "ipu_prp_sw.h" |
| |
| #ifdef CAMERA_DBG |
| #define CAMERA_TRACE(x) (printk)x |
| #else |
| #define CAMERA_TRACE(x) |
| #endif |
| |
| /* |
| * Function definitions |
| */ |
| |
| /*! |
| * csi ENC callback function. |
| * |
| * @param irq int irq line |
| * @param dev_id void * device id |
| * |
| * @return status IRQ_HANDLED for handled |
| */ |
| static irqreturn_t csi_enc_callback(int irq, void *dev_id) |
| { |
| cam_data *cam = (cam_data *) dev_id; |
| |
| if (cam->enc_callback == NULL) |
| return IRQ_HANDLED; |
| |
| cam->enc_callback(irq, dev_id); |
| return IRQ_HANDLED; |
| } |
| |
| /*! |
| * CSI ENC enable channel setup function |
| * |
| * @param cam struct cam_data * mxc capture instance |
| * |
| * @return status |
| */ |
| static int csi_enc_setup(cam_data *cam) |
| { |
| ipu_channel_params_t params; |
| u32 pixel_fmt; |
| int err = 0, sensor_protocol = 0; |
| dma_addr_t dummy = cam->dummy_frame.buffer.m.offset; |
| ipu_channel_t chan = (cam->csi == 0) ? CSI_MEM0 : CSI_MEM1; |
| #ifdef CONFIG_MXC_MIPI_CSI2 |
| void *mipi_csi2_info; |
| int ipu_id; |
| int csi_id; |
| #endif |
| |
| CAMERA_TRACE("In csi_enc_setup\n"); |
| if (!cam) { |
| printk(KERN_ERR "cam private is NULL\n"); |
| return -ENXIO; |
| } |
| |
| memset(¶ms, 0, sizeof(ipu_channel_params_t)); |
| params.csi_mem.csi = cam->csi; |
| |
| sensor_protocol = ipu_csi_get_sensor_protocol(cam->ipu, cam->csi); |
| switch (sensor_protocol) { |
| case IPU_CSI_CLK_MODE_GATED_CLK: |
| case IPU_CSI_CLK_MODE_NONGATED_CLK: |
| case IPU_CSI_CLK_MODE_CCIR656_PROGRESSIVE: |
| case IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_DDR: |
| case IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_SDR: |
| params.csi_mem.interlaced = false; |
| break; |
| case IPU_CSI_CLK_MODE_CCIR656_INTERLACED: |
| case IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_DDR: |
| case IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_SDR: |
| params.csi_mem.interlaced = true; |
| break; |
| default: |
| printk(KERN_ERR "sensor protocol unsupported\n"); |
| return -EINVAL; |
| } |
| |
| 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_YVU420) |
| pixel_fmt = IPU_PIX_FMT_YVU420P; |
| 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_NV12) |
| pixel_fmt = IPU_PIX_FMT_NV12; |
| 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; |
| } |
| |
| #ifdef CONFIG_MXC_MIPI_CSI2 |
| mipi_csi2_info = mipi_csi2_get_info(); |
| |
| if (mipi_csi2_info) { |
| if (mipi_csi2_get_status(mipi_csi2_info)) { |
| ipu_id = mipi_csi2_get_bind_ipu(mipi_csi2_info); |
| csi_id = mipi_csi2_get_bind_csi(mipi_csi2_info); |
| |
| if (cam->ipu == ipu_get_soc(ipu_id) |
| && cam->csi == csi_id) { |
| params.csi_mem.mipi_en = true; |
| params.csi_mem.mipi_vc = |
| mipi_csi2_get_virtual_channel(mipi_csi2_info); |
| params.csi_mem.mipi_id = |
| mipi_csi2_get_datatype(mipi_csi2_info); |
| |
| mipi_csi2_pixelclk_enable(mipi_csi2_info); |
| } else { |
| params.csi_mem.mipi_en = false; |
| params.csi_mem.mipi_vc = 0; |
| params.csi_mem.mipi_id = 0; |
| } |
| } else { |
| params.csi_mem.mipi_en = false; |
| params.csi_mem.mipi_vc = 0; |
| params.csi_mem.mipi_id = 0; |
| } |
| } |
| #endif |
| |
| err = ipu_init_channel(cam->ipu, chan, ¶ms); |
| if (err != 0) { |
| printk(KERN_ERR "ipu_init_channel %d\n", err); |
| return err; |
| } |
| |
| err = ipu_init_channel_buffer(cam->ipu, |
| chan, |
| IPU_OUTPUT_BUFFER, |
| pixel_fmt, cam->v2f.fmt.pix.width, |
| cam->v2f.fmt.pix.height, |
| cam->v2f.fmt.pix.bytesperline, |
| IPU_ROTATE_NONE, |
| dummy, dummy, 0, |
| cam->offset.u_offset, |
| cam->offset.v_offset); |
| if (err != 0) { |
| printk(KERN_ERR "CSI_MEM output buffer\n"); |
| return err; |
| } |
| err = ipu_enable_channel(cam->ipu, chan); |
| if (err < 0) { |
| printk(KERN_ERR "ipu_enable_channel CSI_MEM\n"); |
| return err; |
| } |
| |
| return err; |
| } |
| |
| /*! |
| * function to update physical buffer address for encorder IDMA channel |
| * |
| * @param *private pointer to the cam_data structure |
| * @param eba physical buffer address for encorder IDMA channel |
| * |
| * @return status |
| */ |
| static int csi_enc_eba_update(void *private, dma_addr_t eba) |
| { |
| int err = 0; |
| cam_data *cam = (cam_data *) private; |
| struct ipu_soc *ipu = cam->ipu; |
| int *buffer_num = &cam->ping_pong_csi; |
| ipu_channel_t chan = (cam->csi == 0) ? CSI_MEM0 : CSI_MEM1; |
| |
| pr_debug("eba %x\n", eba); |
| err = ipu_update_channel_buffer(ipu, chan, IPU_OUTPUT_BUFFER, |
| *buffer_num, eba); |
| if (err != 0) { |
| ipu_clear_buffer_ready(ipu, chan, IPU_OUTPUT_BUFFER, |
| *buffer_num); |
| |
| err = ipu_update_channel_buffer(ipu, chan, |
| IPU_OUTPUT_BUFFER, *buffer_num, eba); |
| if (err != 0) { |
| pr_err("ERROR: v4l2 capture: fail to update " |
| "buf%d\n", *buffer_num); |
| return err; |
| } |
| } |
| |
| ipu_select_buffer(ipu, chan, IPU_OUTPUT_BUFFER, *buffer_num); |
| |
| *buffer_num = (*buffer_num == 0) ? 1 : 0; |
| |
| return 0; |
| } |
| |
| /*! |
| * Enable encoder task |
| * @param private struct cam_data * mxc capture instance |
| * |
| * @return status |
| */ |
| static int csi_enc_enabling_tasks(void *private) |
| { |
| cam_data *cam = (cam_data *) private; |
| int err = 0; |
| uint32_t irq = (cam->csi == 0) ? |
| IPU_IRQ_CSI0_OUT_EOF : IPU_IRQ_CSI1_OUT_EOF; |
| |
| CAMERA_TRACE("IPU:In csi_enc_enabling_tasks\n"); |
| |
| cam->dummy_frame.vaddress = dma_alloc_coherent(0, |
| PAGE_ALIGN(cam->v2f.fmt.pix.sizeimage), |
| &cam->dummy_frame.paddress, |
| GFP_DMA | GFP_KERNEL); |
| if (cam->dummy_frame.vaddress == 0) { |
| pr_err("ERROR: v4l2 capture: Allocate dummy frame " |
| "failed.\n"); |
| return -ENOBUFS; |
| } |
| cam->dummy_frame.buffer.type = V4L2_BUF_TYPE_PRIVATE; |
| cam->dummy_frame.buffer.length = |
| PAGE_ALIGN(cam->v2f.fmt.pix.sizeimage); |
| cam->dummy_frame.buffer.m.offset = cam->dummy_frame.paddress; |
| |
| ipu_clear_irq(cam->ipu, irq); |
| err = ipu_request_irq( |
| cam->ipu, irq, csi_enc_callback, 0, "Mxc Camera", cam); |
| if (err != 0) { |
| printk(KERN_ERR "Error registering rot irq\n"); |
| return err; |
| } |
| |
| err = csi_enc_setup(cam); |
| if (err != 0) { |
| printk(KERN_ERR "csi_enc_setup %d\n", err); |
| return err; |
| } |
| |
| return err; |
| } |
| |
| /*! |
| * Disable encoder task |
| * @param private struct cam_data * mxc capture instance |
| * |
| * @return int |
| */ |
| static int csi_enc_disabling_tasks(void *private) |
| { |
| cam_data *cam = (cam_data *) private; |
| int err = 0; |
| ipu_channel_t chan = (cam->csi == 0) ? CSI_MEM0 : CSI_MEM1; |
| #ifdef CONFIG_MXC_MIPI_CSI2 |
| void *mipi_csi2_info; |
| int ipu_id; |
| int csi_id; |
| #endif |
| |
| err = ipu_disable_channel(cam->ipu, chan, true); |
| |
| ipu_uninit_channel(cam->ipu, chan); |
| |
| if (cam->dummy_frame.vaddress != 0) { |
| dma_free_coherent(0, cam->dummy_frame.buffer.length, |
| cam->dummy_frame.vaddress, |
| cam->dummy_frame.paddress); |
| cam->dummy_frame.vaddress = 0; |
| } |
| |
| #ifdef CONFIG_MXC_MIPI_CSI2 |
| mipi_csi2_info = mipi_csi2_get_info(); |
| |
| if (mipi_csi2_info) { |
| if (mipi_csi2_get_status(mipi_csi2_info)) { |
| ipu_id = mipi_csi2_get_bind_ipu(mipi_csi2_info); |
| csi_id = mipi_csi2_get_bind_csi(mipi_csi2_info); |
| |
| if (cam->ipu == ipu_get_soc(ipu_id) |
| && cam->csi == csi_id) |
| mipi_csi2_pixelclk_disable(mipi_csi2_info); |
| } |
| } |
| #endif |
| |
| return err; |
| } |
| |
| /*! |
| * Enable csi |
| * @param private struct cam_data * mxc capture instance |
| * |
| * @return status |
| */ |
| static int csi_enc_enable_csi(void *private) |
| { |
| cam_data *cam = (cam_data *) private; |
| |
| return ipu_enable_csi(cam->ipu, cam->csi); |
| } |
| |
| /*! |
| * Disable csi |
| * @param private struct cam_data * mxc capture instance |
| * |
| * @return status |
| */ |
| static int csi_enc_disable_csi(void *private) |
| { |
| cam_data *cam = (cam_data *) private; |
| uint32_t irq = (cam->csi == 0) ? |
| IPU_IRQ_CSI0_OUT_EOF : IPU_IRQ_CSI1_OUT_EOF; |
| |
| /* free csi eof irq firstly. |
| * when disable csi, wait for idmac eof. |
| * it requests eof irq again */ |
| ipu_free_irq(cam->ipu, irq, cam); |
| |
| return ipu_disable_csi(cam->ipu, cam->csi); |
| } |
| |
| /*! |
| * function to select CSI ENC as the working path |
| * |
| * @param private struct cam_data * mxc capture instance |
| * |
| * @return int |
| */ |
| int csi_enc_select(void *private) |
| { |
| cam_data *cam = (cam_data *) private; |
| int err = 0; |
| |
| if (cam) { |
| cam->enc_update_eba = csi_enc_eba_update; |
| cam->enc_enable = csi_enc_enabling_tasks; |
| cam->enc_disable = csi_enc_disabling_tasks; |
| cam->enc_enable_csi = csi_enc_enable_csi; |
| cam->enc_disable_csi = csi_enc_disable_csi; |
| } else { |
| err = -EIO; |
| } |
| |
| return err; |
| } |
| EXPORT_SYMBOL(csi_enc_select); |
| |
| /*! |
| * function to de-select CSI ENC as the working path |
| * |
| * @param private struct cam_data * mxc capture instance |
| * |
| * @return int |
| */ |
| int csi_enc_deselect(void *private) |
| { |
| cam_data *cam = (cam_data *) private; |
| int err = 0; |
| |
| if (cam) { |
| cam->enc_update_eba = NULL; |
| cam->enc_enable = NULL; |
| cam->enc_disable = NULL; |
| cam->enc_enable_csi = NULL; |
| cam->enc_disable_csi = NULL; |
| } |
| |
| return err; |
| } |
| EXPORT_SYMBOL(csi_enc_deselect); |
| |
| /*! |
| * Init the Encorder channels |
| * |
| * @return Error code indicating success or failure |
| */ |
| __init int csi_enc_init(void) |
| { |
| return 0; |
| } |
| |
| /*! |
| * Deinit the Encorder channels |
| * |
| */ |
| void __exit csi_enc_exit(void) |
| { |
| } |
| |
| module_init(csi_enc_init); |
| module_exit(csi_enc_exit); |
| |
| MODULE_AUTHOR("Freescale Semiconductor, Inc."); |
| MODULE_DESCRIPTION("CSI ENC Driver"); |
| MODULE_LICENSE("GPL"); |