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path: root/drivers/media/video/mxc/capture/ipu_prp_enc.c
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Diffstat (limited to 'drivers/media/video/mxc/capture/ipu_prp_enc.c')
-rw-r--r--drivers/media/video/mxc/capture/ipu_prp_enc.c530
1 files changed, 530 insertions, 0 deletions
diff --git a/drivers/media/video/mxc/capture/ipu_prp_enc.c b/drivers/media/video/mxc/capture/ipu_prp_enc.c
new file mode 100644
index 000000000000..67637dd150fc
--- /dev/null
+++ b/drivers/media/video/mxc/capture/ipu_prp_enc.c
@@ -0,0 +1,530 @@
+/*
+ * Copyright 2004-2011 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_prp_enc.c
+ *
+ * @brief IPU Use case for PRP-ENC
+ *
+ * @ingroup IPU
+ */
+
+#include <linux/dma-mapping.h>
+#include <linux/ipu.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
+
+static ipu_rotate_mode_t grotation = IPU_ROTATE_NONE;
+
+/*
+ * Function definitions
+ */
+
+/*!
+ * IPU ENC callback function.
+ *
+ * @param irq int irq line
+ * @param dev_id void * device id
+ *
+ * @return status IRQ_HANDLED for handled
+ */
+static irqreturn_t prp_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;
+}
+
+/*!
+ * PrpENC enable channel setup function
+ *
+ * @param cam struct cam_data * mxc capture instance
+ *
+ * @return status
+ */
+static int prp_enc_setup(cam_data *cam)
+{
+ ipu_channel_params_t enc;
+ int err = 0;
+ dma_addr_t dummy = 0xdeadbeaf;
+
+ CAMERA_TRACE("In prp_enc_setup\n");
+ if (!cam) {
+ printk(KERN_ERR "cam private is NULL\n");
+ return -ENXIO;
+ }
+ memset(&enc, 0, sizeof(ipu_channel_params_t));
+
+ ipu_csi_get_window_size(&enc.csi_prp_enc_mem.in_width,
+ &enc.csi_prp_enc_mem.in_height, cam->csi);
+
+ enc.csi_prp_enc_mem.in_pixel_fmt = IPU_PIX_FMT_UYVY;
+ enc.csi_prp_enc_mem.out_width = cam->v2f.fmt.pix.width;
+ enc.csi_prp_enc_mem.out_height = cam->v2f.fmt.pix.height;
+ enc.csi_prp_enc_mem.csi = cam->csi;
+ if (cam->rotation >= IPU_ROTATE_90_RIGHT) {
+ enc.csi_prp_enc_mem.out_width = cam->v2f.fmt.pix.height;
+ enc.csi_prp_enc_mem.out_height = cam->v2f.fmt.pix.width;
+ }
+
+ if (cam->v2f.fmt.pix.pixelformat == V4L2_PIX_FMT_YUV420) {
+ enc.csi_prp_enc_mem.out_pixel_fmt = IPU_PIX_FMT_YUV420P;
+ pr_info("YUV420\n");
+ } else if (cam->v2f.fmt.pix.pixelformat == V4L2_PIX_FMT_YUV422P) {
+ enc.csi_prp_enc_mem.out_pixel_fmt = IPU_PIX_FMT_YUV422P;
+ pr_info("YUV422P\n");
+ } else if (cam->v2f.fmt.pix.pixelformat == V4L2_PIX_FMT_YUYV) {
+ enc.csi_prp_enc_mem.out_pixel_fmt = IPU_PIX_FMT_YUYV;
+ pr_info("YUYV\n");
+ } else if (cam->v2f.fmt.pix.pixelformat == V4L2_PIX_FMT_UYVY) {
+ enc.csi_prp_enc_mem.out_pixel_fmt = IPU_PIX_FMT_UYVY;
+ pr_info("UYVY\n");
+ } else if (cam->v2f.fmt.pix.pixelformat == V4L2_PIX_FMT_NV12) {
+ enc.csi_prp_enc_mem.out_pixel_fmt = IPU_PIX_FMT_NV12;
+ pr_info("NV12\n");
+ } else if (cam->v2f.fmt.pix.pixelformat == V4L2_PIX_FMT_BGR24) {
+ enc.csi_prp_enc_mem.out_pixel_fmt = IPU_PIX_FMT_BGR24;
+ pr_info("BGR24\n");
+ } else if (cam->v2f.fmt.pix.pixelformat == V4L2_PIX_FMT_RGB24) {
+ enc.csi_prp_enc_mem.out_pixel_fmt = IPU_PIX_FMT_RGB24;
+ pr_info("RGB24\n");
+ } else if (cam->v2f.fmt.pix.pixelformat == V4L2_PIX_FMT_RGB565) {
+ enc.csi_prp_enc_mem.out_pixel_fmt = IPU_PIX_FMT_RGB565;
+ pr_info("RGB565\n");
+ } else if (cam->v2f.fmt.pix.pixelformat == V4L2_PIX_FMT_BGR32) {
+ enc.csi_prp_enc_mem.out_pixel_fmt = IPU_PIX_FMT_BGR32;
+ pr_info("BGR32\n");
+ } else if (cam->v2f.fmt.pix.pixelformat == V4L2_PIX_FMT_RGB32) {
+ enc.csi_prp_enc_mem.out_pixel_fmt = IPU_PIX_FMT_RGB32;
+ pr_info("RGB32\n");
+ } else {
+ printk(KERN_ERR "format not supported\n");
+ return -EINVAL;
+ }
+
+ err = ipu_init_channel(CSI_PRP_ENC_MEM, &enc);
+ if (err != 0) {
+ printk(KERN_ERR "ipu_init_channel %d\n", err);
+ return err;
+ }
+
+ ipu_csi_enable_mclk_if(CSI_MCLK_ENC, cam->csi, true, true);
+
+ grotation = cam->rotation;
+ if (cam->rotation >= IPU_ROTATE_90_RIGHT) {
+ if (cam->rot_enc_bufs_vaddr[0]) {
+ dma_free_coherent(0, cam->rot_enc_buf_size[0],
+ cam->rot_enc_bufs_vaddr[0],
+ cam->rot_enc_bufs[0]);
+ }
+ if (cam->rot_enc_bufs_vaddr[1]) {
+ dma_free_coherent(0, cam->rot_enc_buf_size[1],
+ cam->rot_enc_bufs_vaddr[1],
+ cam->rot_enc_bufs[1]);
+ }
+ cam->rot_enc_buf_size[0] =
+ PAGE_ALIGN(cam->v2f.fmt.pix.sizeimage);
+ cam->rot_enc_bufs_vaddr[0] =
+ (void *)dma_alloc_coherent(0, cam->rot_enc_buf_size[0],
+ &cam->rot_enc_bufs[0],
+ GFP_DMA | GFP_KERNEL);
+ if (!cam->rot_enc_bufs_vaddr[0]) {
+ printk(KERN_ERR "alloc enc_bufs0\n");
+ return -ENOMEM;
+ }
+ cam->rot_enc_buf_size[1] =
+ PAGE_ALIGN(cam->v2f.fmt.pix.sizeimage);
+ cam->rot_enc_bufs_vaddr[1] =
+ (void *)dma_alloc_coherent(0, cam->rot_enc_buf_size[1],
+ &cam->rot_enc_bufs[1],
+ GFP_DMA | GFP_KERNEL);
+ if (!cam->rot_enc_bufs_vaddr[1]) {
+ dma_free_coherent(0, cam->rot_enc_buf_size[0],
+ cam->rot_enc_bufs_vaddr[0],
+ cam->rot_enc_bufs[0]);
+ cam->rot_enc_bufs_vaddr[0] = NULL;
+ cam->rot_enc_bufs[0] = 0;
+ printk(KERN_ERR "alloc enc_bufs1\n");
+ return -ENOMEM;
+ }
+
+ err = ipu_init_channel_buffer(CSI_PRP_ENC_MEM,
+ IPU_OUTPUT_BUFFER,
+ enc.csi_prp_enc_mem.out_pixel_fmt,
+ enc.csi_prp_enc_mem.out_width,
+ enc.csi_prp_enc_mem.out_height,
+ enc.csi_prp_enc_mem.out_width,
+ IPU_ROTATE_NONE,
+ cam->rot_enc_bufs[0],
+ cam->rot_enc_bufs[1], 0, 0);
+ if (err != 0) {
+ printk(KERN_ERR "CSI_PRP_ENC_MEM err\n");
+ return err;
+ }
+
+ err = ipu_init_channel(MEM_ROT_ENC_MEM, NULL);
+ if (err != 0) {
+ printk(KERN_ERR "MEM_ROT_ENC_MEM channel err\n");
+ return err;
+ }
+
+ err = ipu_init_channel_buffer(MEM_ROT_ENC_MEM, IPU_INPUT_BUFFER,
+ enc.csi_prp_enc_mem.out_pixel_fmt,
+ enc.csi_prp_enc_mem.out_width,
+ enc.csi_prp_enc_mem.out_height,
+ enc.csi_prp_enc_mem.out_width,
+ cam->rotation,
+ cam->rot_enc_bufs[0],
+ cam->rot_enc_bufs[1], 0, 0);
+ if (err != 0) {
+ printk(KERN_ERR "MEM_ROT_ENC_MEM input buffer\n");
+ return err;
+ }
+
+ err =
+ ipu_init_channel_buffer(MEM_ROT_ENC_MEM, IPU_OUTPUT_BUFFER,
+ enc.csi_prp_enc_mem.out_pixel_fmt,
+ enc.csi_prp_enc_mem.out_height,
+ enc.csi_prp_enc_mem.out_width,
+ cam->v2f.fmt.pix.bytesperline /
+ bytes_per_pixel(enc.csi_prp_enc_mem.
+ out_pixel_fmt),
+ IPU_ROTATE_NONE, dummy, dummy,
+ cam->offset.u_offset,
+ cam->offset.v_offset);
+ if (err != 0) {
+ printk(KERN_ERR "MEM_ROT_ENC_MEM output buffer\n");
+ return err;
+ }
+
+ err = ipu_link_channels(CSI_PRP_ENC_MEM, MEM_ROT_ENC_MEM);
+ if (err < 0) {
+ printk(KERN_ERR
+ "link CSI_PRP_ENC_MEM-MEM_ROT_ENC_MEM\n");
+ return err;
+ }
+
+ err = ipu_enable_channel(CSI_PRP_ENC_MEM);
+ if (err < 0) {
+ printk(KERN_ERR "ipu_enable_channel CSI_PRP_ENC_MEM\n");
+ return err;
+ }
+ err = ipu_enable_channel(MEM_ROT_ENC_MEM);
+ if (err < 0) {
+ printk(KERN_ERR "ipu_enable_channel MEM_ROT_ENC_MEM\n");
+ return err;
+ }
+
+ ipu_select_buffer(CSI_PRP_ENC_MEM, IPU_OUTPUT_BUFFER, 0);
+ ipu_select_buffer(CSI_PRP_ENC_MEM, IPU_OUTPUT_BUFFER, 1);
+ } else {
+ err =
+ ipu_init_channel_buffer(CSI_PRP_ENC_MEM, IPU_OUTPUT_BUFFER,
+ enc.csi_prp_enc_mem.out_pixel_fmt,
+ enc.csi_prp_enc_mem.out_width,
+ enc.csi_prp_enc_mem.out_height,
+ cam->v2f.fmt.pix.bytesperline /
+ bytes_per_pixel(enc.csi_prp_enc_mem.
+ out_pixel_fmt),
+ cam->rotation, dummy, dummy,
+ cam->offset.u_offset,
+ cam->offset.v_offset);
+ if (err != 0) {
+ printk(KERN_ERR "CSI_PRP_ENC_MEM output buffer\n");
+ return err;
+ }
+ err = ipu_enable_channel(CSI_PRP_ENC_MEM);
+ if (err < 0) {
+ printk(KERN_ERR "ipu_enable_channel CSI_PRP_ENC_MEM\n");
+ return err;
+ }
+ }
+
+ return err;
+}
+
+/*!
+ * function to update physical buffer address for encorder IDMA channel
+ *
+ * @param eba physical buffer address for encorder IDMA channel
+ * @param buffer_num int buffer 0 or buffer 1
+ *
+ * @return status
+ */
+static int prp_enc_eba_update(dma_addr_t eba, int *buffer_num)
+{
+ int err = 0;
+
+ pr_debug("eba %x\n", eba);
+ if (grotation >= IPU_ROTATE_90_RIGHT) {
+ err = ipu_update_channel_buffer(MEM_ROT_ENC_MEM,
+ IPU_OUTPUT_BUFFER, *buffer_num,
+ eba);
+ } else {
+ err = ipu_update_channel_buffer(CSI_PRP_ENC_MEM,
+ IPU_OUTPUT_BUFFER, *buffer_num,
+ eba);
+ }
+ if (err != 0) {
+ if (grotation >= IPU_ROTATE_90_RIGHT) {
+ ipu_clear_buffer_ready(MEM_ROT_ENC_MEM,
+ IPU_OUTPUT_BUFFER,
+ *buffer_num);
+ err = ipu_update_channel_buffer(MEM_ROT_ENC_MEM,
+ IPU_OUTPUT_BUFFER,
+ *buffer_num,
+ eba);
+ } else {
+ ipu_clear_buffer_ready(CSI_PRP_ENC_MEM,
+ IPU_OUTPUT_BUFFER,
+ *buffer_num);
+ err = ipu_update_channel_buffer(CSI_PRP_ENC_MEM,
+ IPU_OUTPUT_BUFFER,
+ *buffer_num,
+ eba);
+ }
+
+ if (err != 0) {
+ pr_err("ERROR: v4l2 capture: fail to update "
+ "buf%d\n", *buffer_num);
+ return err;
+ }
+ }
+
+ if (grotation >= IPU_ROTATE_90_RIGHT) {
+ ipu_select_buffer(MEM_ROT_ENC_MEM, IPU_OUTPUT_BUFFER,
+ *buffer_num);
+ } else {
+ ipu_select_buffer(CSI_PRP_ENC_MEM, 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 prp_enc_enabling_tasks(void *private)
+{
+ cam_data *cam = (cam_data *) private;
+ int err = 0;
+ CAMERA_TRACE("IPU:In prp_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;
+
+ if (cam->rotation >= IPU_ROTATE_90_RIGHT) {
+ err = ipu_request_irq(IPU_IRQ_PRP_ENC_ROT_OUT_EOF,
+ prp_enc_callback, 0, "Mxc Camera", cam);
+ } else {
+ err = ipu_request_irq(IPU_IRQ_PRP_ENC_OUT_EOF,
+ prp_enc_callback, 0, "Mxc Camera", cam);
+ }
+ if (err != 0) {
+ printk(KERN_ERR "Error registering rot irq\n");
+ return err;
+ }
+
+ err = prp_enc_setup(cam);
+ if (err != 0) {
+ printk(KERN_ERR "prp_enc_setup %d\n", err);
+ return err;
+ }
+
+ return err;
+}
+
+/*!
+ * Disable encoder task
+ * @param private struct cam_data * mxc capture instance
+ *
+ * @return int
+ */
+static int prp_enc_disabling_tasks(void *private)
+{
+ cam_data *cam = (cam_data *) private;
+ int err = 0;
+
+ if (cam->rotation >= IPU_ROTATE_90_RIGHT) {
+ ipu_free_irq(IPU_IRQ_PRP_ENC_ROT_OUT_EOF, cam);
+ } else {
+ ipu_free_irq(IPU_IRQ_PRP_ENC_OUT_EOF, cam);
+ }
+
+ if (cam->rotation >= IPU_ROTATE_90_RIGHT) {
+ ipu_unlink_channels(CSI_PRP_ENC_MEM, MEM_ROT_ENC_MEM);
+ }
+
+ err = ipu_disable_channel(CSI_PRP_ENC_MEM, true);
+ if (cam->rotation >= IPU_ROTATE_90_RIGHT) {
+ err |= ipu_disable_channel(MEM_ROT_ENC_MEM, true);
+ }
+
+ ipu_uninit_channel(CSI_PRP_ENC_MEM);
+ if (cam->rotation >= IPU_ROTATE_90_RIGHT) {
+ ipu_uninit_channel(MEM_ROT_ENC_MEM);
+ }
+
+ 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;
+ }
+ ipu_csi_enable_mclk_if(CSI_MCLK_ENC, cam->csi, false, false);
+
+ return err;
+}
+
+/*!
+ * Enable csi
+ * @param private struct cam_data * mxc capture instance
+ *
+ * @return status
+ */
+static int prp_enc_enable_csi(void *private)
+{
+ cam_data *cam = (cam_data *) private;
+
+ return ipu_enable_csi(cam->csi);
+}
+
+/*!
+ * Disable csi
+ * @param private struct cam_data * mxc capture instance
+ *
+ * @return status
+ */
+static int prp_enc_disable_csi(void *private)
+{
+ cam_data *cam = (cam_data *) private;
+
+ return ipu_disable_csi(cam->csi);
+}
+
+/*!
+ * function to select PRP-ENC as the working path
+ *
+ * @param private struct cam_data * mxc capture instance
+ *
+ * @return int
+ */
+int prp_enc_select(void *private)
+{
+ cam_data *cam = (cam_data *) private;
+ int err = 0;
+
+ if (cam) {
+ cam->enc_update_eba = prp_enc_eba_update;
+ cam->enc_enable = prp_enc_enabling_tasks;
+ cam->enc_disable = prp_enc_disabling_tasks;
+ cam->enc_enable_csi = prp_enc_enable_csi;
+ cam->enc_disable_csi = prp_enc_disable_csi;
+ } else {
+ err = -EIO;
+ }
+
+ return err;
+}
+
+/*!
+ * function to de-select PRP-ENC as the working path
+ *
+ * @param private struct cam_data * mxc capture instance
+ *
+ * @return int
+ */
+int prp_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;
+ if (cam->rot_enc_bufs_vaddr[0]) {
+ dma_free_coherent(0, cam->rot_enc_buf_size[0],
+ cam->rot_enc_bufs_vaddr[0],
+ cam->rot_enc_bufs[0]);
+ cam->rot_enc_bufs_vaddr[0] = NULL;
+ cam->rot_enc_bufs[0] = 0;
+ }
+ if (cam->rot_enc_bufs_vaddr[1]) {
+ dma_free_coherent(0, cam->rot_enc_buf_size[1],
+ cam->rot_enc_bufs_vaddr[1],
+ cam->rot_enc_bufs[1]);
+ cam->rot_enc_bufs_vaddr[1] = NULL;
+ cam->rot_enc_bufs[1] = 0;
+ }
+ }
+
+ return err;
+}
+
+/*!
+ * Init the Encorder channels
+ *
+ * @return Error code indicating success or failure
+ */
+__init int prp_enc_init(void)
+{
+ return 0;
+}
+
+/*!
+ * Deinit the Encorder channels
+ *
+ */
+void __exit prp_enc_exit(void)
+{
+}
+
+module_init(prp_enc_init);
+module_exit(prp_enc_exit);
+
+EXPORT_SYMBOL(prp_enc_select);
+EXPORT_SYMBOL(prp_enc_deselect);
+
+MODULE_AUTHOR("Freescale Semiconductor, Inc.");
+MODULE_DESCRIPTION("IPU PRP ENC Driver");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.0.4) at 2024-04-26 17:29:22 +0000