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/*
* 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_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_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) {
printk(KERN_ERR "err %d buffer_num %d\n", err, *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");
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);
}
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;
//err = prp_enc_disabling_tasks(cam);
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");
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