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path: root/drivers/media/video/mxc/capture/ipu_prp_vf_sdc_bg.c
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Diffstat (limited to 'drivers/media/video/mxc/capture/ipu_prp_vf_sdc_bg.c')
-rw-r--r--drivers/media/video/mxc/capture/ipu_prp_vf_sdc_bg.c443
1 files changed, 443 insertions, 0 deletions
diff --git a/drivers/media/video/mxc/capture/ipu_prp_vf_sdc_bg.c b/drivers/media/video/mxc/capture/ipu_prp_vf_sdc_bg.c
new file mode 100644
index 000000000000..4e21f0c93b32
--- /dev/null
+++ b/drivers/media/video/mxc/capture/ipu_prp_vf_sdc_bg.c
@@ -0,0 +1,443 @@
+/*
+ * 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_vf_sdc_bg.c
+ *
+ * @brief IPU Use case for PRP-VF back-ground
+ *
+ * @ingroup IPU
+ */
+#include <linux/dma-mapping.h>
+#include <linux/fb.h>
+#include <linux/ipu.h>
+#include "mxc_v4l2_capture.h"
+#include "ipu_prp_sw.h"
+
+static int buffer_num;
+static int buffer_ready;
+
+/*
+ * Function definitions
+ */
+
+/*!
+ * SDC V-Sync callback function.
+ *
+ * @param irq int irq line
+ * @param dev_id void * device id
+ *
+ * @return status IRQ_HANDLED for handled
+ */
+static irqreturn_t prpvf_sdc_vsync_callback(int irq, void *dev_id)
+{
+ pr_debug("buffer_ready %d buffer_num %d\n", buffer_ready, buffer_num);
+ if (buffer_ready > 0) {
+ ipu_select_buffer(MEM_ROT_VF_MEM, IPU_OUTPUT_BUFFER, 0);
+ buffer_ready--;
+ }
+
+ return IRQ_HANDLED;
+}
+
+/*!
+ * VF EOF callback function.
+ *
+ * @param irq int irq line
+ * @param dev_id void * device id
+ *
+ * @return status IRQ_HANDLED for handled
+ */
+static irqreturn_t prpvf_vf_eof_callback(int irq, void *dev_id)
+{
+ pr_debug("buffer_ready %d buffer_num %d\n", buffer_ready, buffer_num);
+
+ ipu_select_buffer(MEM_ROT_VF_MEM, IPU_INPUT_BUFFER, buffer_num);
+
+ buffer_num = (buffer_num == 0) ? 1 : 0;
+
+ ipu_select_buffer(CSI_PRP_VF_MEM, IPU_OUTPUT_BUFFER, buffer_num);
+ buffer_ready++;
+ return IRQ_HANDLED;
+}
+
+/*!
+ * prpvf_start - start the vf task
+ *
+ * @param private cam_data * mxc v4l2 main structure
+ *
+ */
+static int prpvf_start(void *private)
+{
+ cam_data *cam = (cam_data *) private;
+ ipu_channel_params_t vf;
+ u32 format;
+ u32 offset;
+ u32 bpp, size = 3;
+ int err = 0;
+
+ if (!cam) {
+ printk(KERN_ERR "private is NULL\n");
+ return -EIO;
+ }
+
+ if (cam->overlay_active == true) {
+ pr_debug("already start.\n");
+ return 0;
+ }
+
+ format = cam->v4l2_fb.fmt.pixelformat;
+ if (cam->v4l2_fb.fmt.pixelformat == IPU_PIX_FMT_BGR24) {
+ bpp = 3, size = 3;
+ pr_info("BGR24\n");
+ } else if (cam->v4l2_fb.fmt.pixelformat == IPU_PIX_FMT_RGB565) {
+ bpp = 2, size = 2;
+ pr_info("RGB565\n");
+ } else if (cam->v4l2_fb.fmt.pixelformat == IPU_PIX_FMT_BGR32) {
+ bpp = 4, size = 4;
+ pr_info("BGR32\n");
+ } else {
+ printk(KERN_ERR
+ "unsupported fix format from the framebuffer.\n");
+ return -EINVAL;
+ }
+
+ offset = cam->v4l2_fb.fmt.bytesperline * cam->win.w.top +
+ size * cam->win.w.left;
+
+ if (cam->v4l2_fb.base == 0) {
+ printk(KERN_ERR "invalid frame buffer address.\n");
+ } else {
+ offset += (u32) cam->v4l2_fb.base;
+ }
+
+ memset(&vf, 0, sizeof(ipu_channel_params_t));
+ ipu_csi_get_window_size(&vf.csi_prp_vf_mem.in_width,
+ &vf.csi_prp_vf_mem.in_height, cam->csi);
+ vf.csi_prp_vf_mem.in_pixel_fmt = IPU_PIX_FMT_UYVY;
+ vf.csi_prp_vf_mem.out_width = cam->win.w.width;
+ vf.csi_prp_vf_mem.out_height = cam->win.w.height;
+ vf.csi_prp_vf_mem.csi = cam->csi;
+ if (cam->vf_rotation >= IPU_ROTATE_90_RIGHT) {
+ vf.csi_prp_vf_mem.out_width = cam->win.w.height;
+ vf.csi_prp_vf_mem.out_height = cam->win.w.width;
+ }
+ vf.csi_prp_vf_mem.out_pixel_fmt = format;
+ size = cam->win.w.width * cam->win.w.height * size;
+
+ err = ipu_init_channel(CSI_PRP_VF_MEM, &vf);
+ if (err != 0)
+ goto out_4;
+
+ ipu_csi_enable_mclk_if(CSI_MCLK_VF, cam->csi, true, true);
+
+ if (cam->vf_bufs_vaddr[0]) {
+ dma_free_coherent(0, cam->vf_bufs_size[0],
+ cam->vf_bufs_vaddr[0], cam->vf_bufs[0]);
+ }
+ if (cam->vf_bufs_vaddr[1]) {
+ dma_free_coherent(0, cam->vf_bufs_size[1],
+ cam->vf_bufs_vaddr[1], cam->vf_bufs[1]);
+ }
+ cam->vf_bufs_size[0] = PAGE_ALIGN(size);
+ cam->vf_bufs_vaddr[0] = (void *)dma_alloc_coherent(0,
+ cam->vf_bufs_size[0],
+ &cam->vf_bufs[0],
+ GFP_DMA |
+ GFP_KERNEL);
+ if (cam->vf_bufs_vaddr[0] == NULL) {
+ printk(KERN_ERR "Error to allocate vf buffer\n");
+ err = -ENOMEM;
+ goto out_3;
+ }
+ cam->vf_bufs_size[1] = PAGE_ALIGN(size);
+ cam->vf_bufs_vaddr[1] = (void *)dma_alloc_coherent(0,
+ cam->vf_bufs_size[1],
+ &cam->vf_bufs[1],
+ GFP_DMA |
+ GFP_KERNEL);
+ if (cam->vf_bufs_vaddr[1] == NULL) {
+ printk(KERN_ERR "Error to allocate vf buffer\n");
+ err = -ENOMEM;
+ goto out_3;
+ }
+
+ err = ipu_init_channel_buffer(CSI_PRP_VF_MEM, IPU_OUTPUT_BUFFER,
+ format, vf.csi_prp_vf_mem.out_width,
+ vf.csi_prp_vf_mem.out_height,
+ vf.csi_prp_vf_mem.out_width,
+ IPU_ROTATE_NONE, cam->vf_bufs[0],
+ cam->vf_bufs[1], 0, 0);
+ if (err != 0) {
+ printk(KERN_ERR "Error initializing CSI_PRP_VF_MEM\n");
+ goto out_3;
+ }
+ err = ipu_init_channel(MEM_ROT_VF_MEM, NULL);
+ if (err != 0) {
+ printk(KERN_ERR "Error MEM_ROT_VF_MEM channel\n");
+ goto out_3;
+ }
+
+ err = ipu_init_channel_buffer(MEM_ROT_VF_MEM, IPU_INPUT_BUFFER,
+ format, vf.csi_prp_vf_mem.out_width,
+ vf.csi_prp_vf_mem.out_height,
+ vf.csi_prp_vf_mem.out_width,
+ cam->vf_rotation, cam->vf_bufs[0],
+ cam->vf_bufs[1], 0, 0);
+ if (err != 0) {
+ printk(KERN_ERR "Error MEM_ROT_VF_MEM input buffer\n");
+ goto out_2;
+ }
+
+ if (cam->vf_rotation >= IPU_ROTATE_90_RIGHT) {
+ err = ipu_init_channel_buffer(MEM_ROT_VF_MEM, IPU_OUTPUT_BUFFER,
+ format,
+ vf.csi_prp_vf_mem.out_height,
+ vf.csi_prp_vf_mem.out_width,
+ cam->overlay_fb->var.xres * bpp,
+ IPU_ROTATE_NONE, offset, 0, 0, 0);
+
+ if (err != 0) {
+ printk(KERN_ERR "Error MEM_ROT_VF_MEM output buffer\n");
+ goto out_2;
+ }
+ } else {
+ err = ipu_init_channel_buffer(MEM_ROT_VF_MEM, IPU_OUTPUT_BUFFER,
+ format,
+ vf.csi_prp_vf_mem.out_width,
+ vf.csi_prp_vf_mem.out_height,
+ cam->overlay_fb->var.xres * bpp,
+ IPU_ROTATE_NONE, offset, 0, 0, 0);
+ if (err != 0) {
+ printk(KERN_ERR "Error MEM_ROT_VF_MEM output buffer\n");
+ goto out_2;
+ }
+ }
+
+ ipu_clear_irq(IPU_IRQ_PRP_VF_OUT_EOF);
+ err = ipu_request_irq(IPU_IRQ_PRP_VF_OUT_EOF, prpvf_vf_eof_callback,
+ 0, "Mxc Camera", cam);
+ if (err != 0) {
+ printk(KERN_ERR
+ "Error registering IPU_IRQ_PRP_VF_OUT_EOF irq.\n");
+ goto out_2;
+ }
+
+ ipu_clear_irq(IPU_IRQ_BG_SF_END);
+ err = ipu_request_irq(IPU_IRQ_BG_SF_END, prpvf_sdc_vsync_callback,
+ 0, "Mxc Camera", NULL);
+ if (err != 0) {
+ printk(KERN_ERR "Error registering IPU_IRQ_BG_SF_END irq.\n");
+ goto out_1;
+ }
+
+ ipu_enable_channel(CSI_PRP_VF_MEM);
+ ipu_enable_channel(MEM_ROT_VF_MEM);
+
+ buffer_num = 0;
+ buffer_ready = 0;
+ ipu_select_buffer(CSI_PRP_VF_MEM, IPU_OUTPUT_BUFFER, 0);
+
+ cam->overlay_active = true;
+ return err;
+
+ out_1:
+ ipu_free_irq(IPU_IRQ_PRP_VF_OUT_EOF, NULL);
+ out_2:
+ ipu_uninit_channel(MEM_ROT_VF_MEM);
+ out_3:
+ ipu_uninit_channel(CSI_PRP_VF_MEM);
+ out_4:
+ if (cam->vf_bufs_vaddr[0]) {
+ dma_free_coherent(0, cam->vf_bufs_size[0],
+ cam->vf_bufs_vaddr[0], cam->vf_bufs[0]);
+ cam->vf_bufs_vaddr[0] = NULL;
+ cam->vf_bufs[0] = 0;
+ }
+ if (cam->vf_bufs_vaddr[1]) {
+ dma_free_coherent(0, cam->vf_bufs_size[1],
+ cam->vf_bufs_vaddr[1], cam->vf_bufs[1]);
+ cam->vf_bufs_vaddr[1] = NULL;
+ cam->vf_bufs[1] = 0;
+ }
+ if (cam->rot_vf_bufs_vaddr[0]) {
+ dma_free_coherent(0, cam->rot_vf_buf_size[0],
+ cam->rot_vf_bufs_vaddr[0],
+ cam->rot_vf_bufs[0]);
+ cam->rot_vf_bufs_vaddr[0] = NULL;
+ cam->rot_vf_bufs[0] = 0;
+ }
+ if (cam->rot_vf_bufs_vaddr[1]) {
+ dma_free_coherent(0, cam->rot_vf_buf_size[1],
+ cam->rot_vf_bufs_vaddr[1],
+ cam->rot_vf_bufs[1]);
+ cam->rot_vf_bufs_vaddr[1] = NULL;
+ cam->rot_vf_bufs[1] = 0;
+ }
+ return err;
+}
+
+/*!
+ * prpvf_stop - stop the vf task
+ *
+ * @param private cam_data * mxc v4l2 main structure
+ *
+ */
+static int prpvf_stop(void *private)
+{
+ cam_data *cam = (cam_data *) private;
+
+ if (cam->overlay_active == false)
+ return 0;
+
+ ipu_free_irq(IPU_IRQ_BG_SF_END, NULL);
+
+ ipu_free_irq(IPU_IRQ_PRP_VF_OUT_EOF, cam);
+
+ ipu_disable_channel(CSI_PRP_VF_MEM, true);
+ ipu_disable_channel(MEM_ROT_VF_MEM, true);
+ ipu_uninit_channel(CSI_PRP_VF_MEM);
+ ipu_uninit_channel(MEM_ROT_VF_MEM);
+ ipu_csi_enable_mclk_if(CSI_MCLK_VF, cam->csi, false, false);
+
+ if (cam->vf_bufs_vaddr[0]) {
+ dma_free_coherent(0, cam->vf_bufs_size[0],
+ cam->vf_bufs_vaddr[0], cam->vf_bufs[0]);
+ cam->vf_bufs_vaddr[0] = NULL;
+ cam->vf_bufs[0] = 0;
+ }
+ if (cam->vf_bufs_vaddr[1]) {
+ dma_free_coherent(0, cam->vf_bufs_size[1],
+ cam->vf_bufs_vaddr[1], cam->vf_bufs[1]);
+ cam->vf_bufs_vaddr[1] = NULL;
+ cam->vf_bufs[1] = 0;
+ }
+ if (cam->rot_vf_bufs_vaddr[0]) {
+ dma_free_coherent(0, cam->rot_vf_buf_size[0],
+ cam->rot_vf_bufs_vaddr[0],
+ cam->rot_vf_bufs[0]);
+ cam->rot_vf_bufs_vaddr[0] = NULL;
+ cam->rot_vf_bufs[0] = 0;
+ }
+ if (cam->rot_vf_bufs_vaddr[1]) {
+ dma_free_coherent(0, cam->rot_vf_buf_size[1],
+ cam->rot_vf_bufs_vaddr[1],
+ cam->rot_vf_bufs[1]);
+ cam->rot_vf_bufs_vaddr[1] = NULL;
+ cam->rot_vf_bufs[1] = 0;
+ }
+
+ buffer_num = 0;
+ buffer_ready = 0;
+ cam->overlay_active = false;
+ return 0;
+}
+
+/*!
+ * Enable csi
+ * @param private struct cam_data * mxc capture instance
+ *
+ * @return status
+ */
+static int prp_vf_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_vf_disable_csi(void *private)
+{
+ cam_data *cam = (cam_data *) private;
+
+ return ipu_disable_csi(cam->csi);
+}
+
+/*!
+ * function to select PRP-VF as the working path
+ *
+ * @param private cam_data * mxc v4l2 main structure
+ *
+ * @return status
+ */
+int prp_vf_sdc_select_bg(void *private)
+{
+ cam_data *cam = (cam_data *) private;
+
+ if (cam) {
+ cam->vf_start_sdc = prpvf_start;
+ cam->vf_stop_sdc = prpvf_stop;
+ cam->vf_enable_csi = prp_vf_enable_csi;
+ cam->vf_disable_csi = prp_vf_disable_csi;
+ cam->overlay_active = false;
+ }
+
+ return 0;
+}
+
+/*!
+ * function to de-select PRP-VF as the working path
+ *
+ * @param private cam_data * mxc v4l2 main structure
+ *
+ * @return status
+ */
+int prp_vf_sdc_deselect_bg(void *private)
+{
+ cam_data *cam = (cam_data *) private;
+ int err = 0;
+ err = prpvf_stop(private);
+
+ if (cam) {
+ cam->vf_start_sdc = NULL;
+ cam->vf_stop_sdc = NULL;
+ cam->vf_enable_csi = NULL;
+ cam->vf_disable_csi = NULL;
+ }
+ return err;
+}
+
+/*!
+ * Init viewfinder task.
+ *
+ * @return Error code indicating success or failure
+ */
+__init int prp_vf_sdc_init_bg(void)
+{
+ return 0;
+}
+
+/*!
+ * Deinit viewfinder task.
+ *
+ * @return Error code indicating success or failure
+ */
+void __exit prp_vf_sdc_exit_bg(void)
+{
+}
+
+module_init(prp_vf_sdc_init_bg);
+module_exit(prp_vf_sdc_exit_bg);
+
+EXPORT_SYMBOL(prp_vf_sdc_select_bg);
+EXPORT_SYMBOL(prp_vf_sdc_deselect_bg);
+
+MODULE_AUTHOR("Freescale Semiconductor, Inc.");
+MODULE_DESCRIPTION("IPU PRP VF SDC Backgroud Driver");
+MODULE_LICENSE("GPL");
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