summaryrefslogtreecommitdiff
path: root/drivers/media/video/mxc/capture/ipu_prp_vf_sdc.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/video/mxc/capture/ipu_prp_vf_sdc.c')
-rw-r--r--drivers/media/video/mxc/capture/ipu_prp_vf_sdc.c482
1 files changed, 482 insertions, 0 deletions
diff --git a/drivers/media/video/mxc/capture/ipu_prp_vf_sdc.c b/drivers/media/video/mxc/capture/ipu_prp_vf_sdc.c
new file mode 100644
index 000000000000..27fa92f165d0
--- /dev/null
+++ b/drivers/media/video/mxc/capture/ipu_prp_vf_sdc.c
@@ -0,0 +1,482 @@
+/*
+ * 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_vf_sdc.c
+ *
+ * @brief IPU Use case for PRP-VF
+ *
+ * @ingroup IPU
+ */
+
+#include <linux/dma-mapping.h>
+#include <linux/console.h>
+#include <linux/ipu.h>
+#include <linux/mxcfb.h>
+#include <mach/hardware.h>
+#include "mxc_v4l2_capture.h"
+#include "ipu_prp_sw.h"
+
+#define OVERLAY_FB_SUPPORT_NONSTD (cpu_is_mx5())
+
+/*
+ * Function definitions
+ */
+
+/*!
+ * prpvf_start - start the vf task
+ *
+ * @param private cam_data * mxc v4l2 main structure
+ *
+ */
+static int prpvf_start(void *private)
+{
+ struct fb_var_screeninfo fbvar;
+ struct fb_info *fbi = NULL;
+ cam_data *cam = (cam_data *) private;
+ ipu_channel_params_t vf;
+ u32 vf_out_format = 0;
+ u32 size = 2, temp = 0;
+ int err = 0, i = 0;
+ short *tmp, color;
+
+ if (!cam) {
+ printk(KERN_ERR "private is NULL\n");
+ return -EIO;
+ }
+
+ if (cam->overlay_active == true) {
+ pr_debug("already started.\n");
+ return 0;
+ }
+
+ for (i = 0; i < num_registered_fb; i++) {
+ char *idstr = registered_fb[i]->fix.id;
+ if (strcmp(idstr, "DISP3 FG") == 0) {
+ fbi = registered_fb[i];
+ break;
+ }
+ }
+
+ if (fbi == NULL) {
+ printk(KERN_ERR "DISP3 FG fb not found\n");
+ return -EPERM;
+ }
+
+ fbvar = fbi->var;
+
+ /* Store the overlay frame buffer's original std */
+ cam->fb_origin_std = fbvar.nonstd;
+
+ if (OVERLAY_FB_SUPPORT_NONSTD) {
+ /* Use DP to do CSC so that we can get better performance */
+ vf_out_format = IPU_PIX_FMT_UYVY;
+ fbvar.nonstd = vf_out_format;
+ color = 0x80;
+ } else {
+ vf_out_format = IPU_PIX_FMT_RGB565;
+ fbvar.nonstd = 0;
+ color = 0x0;
+ }
+
+ fbvar.bits_per_pixel = 16;
+ fbvar.xres = fbvar.xres_virtual = cam->win.w.width;
+ fbvar.yres = cam->win.w.height;
+ fbvar.yres_virtual = cam->win.w.height * 2;
+ fbvar.yoffset = 0;
+ fbvar.activate |= FB_ACTIVATE_FORCE;
+ fb_set_var(fbi, &fbvar);
+
+ ipu_disp_set_window_pos(MEM_FG_SYNC, cam->win.w.left,
+ cam->win.w.top);
+
+ /* Fill black color for framebuffer */
+ tmp = (short *) fbi->screen_base;
+ for (i = 0; i < (fbi->fix.line_length * fbi->var.yres)/2;
+ i++, tmp++)
+ *tmp = color;
+
+ acquire_console_sem();
+ fb_blank(fbi, FB_BLANK_UNBLANK);
+ release_console_sem();
+
+ /* correct display ch buffer address */
+ ipu_update_channel_buffer(MEM_FG_SYNC, IPU_INPUT_BUFFER,
+ 0, fbi->fix.smem_start +
+ (fbi->fix.line_length * fbvar.yres));
+ ipu_update_channel_buffer(MEM_FG_SYNC, IPU_INPUT_BUFFER,
+ 1, fbi->fix.smem_start);
+
+ 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 = vf_out_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_5;
+
+ 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],
+ (dma_addr_t) cam->vf_bufs[0]);
+ }
+ if (cam->vf_bufs_vaddr[1]) {
+ dma_free_coherent(0, cam->vf_bufs_size[1],
+ cam->vf_bufs_vaddr[1],
+ (dma_addr_t) 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],
+ (dma_addr_t *) &
+ 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_4;
+ }
+ cam->vf_bufs_size[1] = PAGE_ALIGN(size);
+ cam->vf_bufs_vaddr[1] = (void *)dma_alloc_coherent(0,
+ cam->vf_bufs_size[1],
+ (dma_addr_t *) &
+ 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;
+ }
+ pr_debug("vf_bufs %x %x\n", cam->vf_bufs[0], cam->vf_bufs[1]);
+
+ if (cam->vf_rotation >= IPU_ROTATE_VERT_FLIP) {
+ err = ipu_init_channel_buffer(CSI_PRP_VF_MEM, IPU_OUTPUT_BUFFER,
+ vf_out_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) {
+ 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,
+ vf_out_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) {
+ temp = vf.csi_prp_vf_mem.out_width;
+ vf.csi_prp_vf_mem.out_width =
+ vf.csi_prp_vf_mem.out_height;
+ vf.csi_prp_vf_mem.out_height = temp;
+ }
+
+ err = ipu_init_channel_buffer(MEM_ROT_VF_MEM, IPU_OUTPUT_BUFFER,
+ vf_out_format,
+ vf.csi_prp_vf_mem.out_height,
+ vf.csi_prp_vf_mem.out_width,
+ vf.csi_prp_vf_mem.out_height,
+ IPU_ROTATE_NONE,
+ fbi->fix.smem_start +
+ (fbi->fix.line_length *
+ fbi->var.yres),
+ fbi->fix.smem_start, 0, 0);
+
+ if (err != 0) {
+ printk(KERN_ERR "Error MEM_ROT_VF_MEM output buffer\n");
+ goto out_2;
+ }
+
+ err = ipu_link_channels(CSI_PRP_VF_MEM, MEM_ROT_VF_MEM);
+ if (err < 0) {
+ printk(KERN_ERR
+ "Error link CSI_PRP_VF_MEM-MEM_ROT_VF_MEM\n");
+ goto out_2;
+ }
+
+ err = ipu_link_channels(MEM_ROT_VF_MEM, MEM_FG_SYNC);
+ if (err < 0) {
+ printk(KERN_ERR
+ "Error link MEM_ROT_VF_MEM-MEM_FG_SYNC\n");
+ goto out_1;
+ }
+
+ ipu_enable_channel(CSI_PRP_VF_MEM);
+ ipu_enable_channel(MEM_ROT_VF_MEM);
+
+ ipu_select_buffer(CSI_PRP_VF_MEM, IPU_OUTPUT_BUFFER, 0);
+ ipu_select_buffer(CSI_PRP_VF_MEM, IPU_OUTPUT_BUFFER, 1);
+ ipu_select_buffer(MEM_ROT_VF_MEM, IPU_OUTPUT_BUFFER, 0);
+ ipu_select_buffer(MEM_ROT_VF_MEM, IPU_OUTPUT_BUFFER, 1);
+ } else {
+ err = ipu_init_channel_buffer(CSI_PRP_VF_MEM, IPU_OUTPUT_BUFFER,
+ vf_out_format, cam->win.w.width,
+ cam->win.w.height,
+ cam->win.w.width,
+ cam->vf_rotation,
+ fbi->fix.smem_start +
+ (fbi->fix.line_length *
+ fbi->var.yres),
+ fbi->fix.smem_start, 0, 0);
+ if (err != 0) {
+ printk(KERN_ERR "Error initializing CSI_PRP_VF_MEM\n");
+ goto out_4;
+ }
+
+ err = ipu_link_channels(CSI_PRP_VF_MEM, MEM_FG_SYNC);
+ if (err < 0) {
+ printk(KERN_ERR "Error linking ipu channels\n");
+ goto out_4;
+ }
+
+ ipu_enable_channel(CSI_PRP_VF_MEM);
+
+ ipu_select_buffer(CSI_PRP_VF_MEM, IPU_OUTPUT_BUFFER, 0);
+ ipu_select_buffer(CSI_PRP_VF_MEM, IPU_OUTPUT_BUFFER, 1);
+ }
+
+ cam->overlay_active = true;
+ return err;
+
+out_1:
+ ipu_unlink_channels(CSI_PRP_VF_MEM, MEM_ROT_VF_MEM);
+out_2:
+ if (cam->vf_rotation >= IPU_ROTATE_VERT_FLIP) {
+ ipu_uninit_channel(MEM_ROT_VF_MEM);
+ }
+out_3:
+ if (cam->vf_bufs_vaddr[0]) {
+ dma_free_coherent(0, cam->vf_bufs_size[0],
+ cam->vf_bufs_vaddr[0],
+ (dma_addr_t) 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],
+ (dma_addr_t) cam->vf_bufs[1]);
+ cam->vf_bufs_vaddr[1] = NULL;
+ cam->vf_bufs[1] = 0;
+ }
+out_4:
+ ipu_uninit_channel(CSI_PRP_VF_MEM);
+out_5:
+ 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;
+ int err = 0, i = 0;
+ struct fb_info *fbi = NULL;
+ struct fb_var_screeninfo fbvar;
+
+ if (cam->overlay_active == false)
+ return 0;
+
+ for (i = 0; i < num_registered_fb; i++) {
+ char *idstr = registered_fb[i]->fix.id;
+ if (strcmp(idstr, "DISP3 FG") == 0) {
+ fbi = registered_fb[i];
+ break;
+ }
+ }
+
+ if (fbi == NULL) {
+ printk(KERN_ERR "DISP3 FG fb not found\n");
+ return -EPERM;
+ }
+
+ if (cam->vf_rotation >= IPU_ROTATE_VERT_FLIP) {
+ ipu_unlink_channels(CSI_PRP_VF_MEM, MEM_ROT_VF_MEM);
+ ipu_unlink_channels(MEM_ROT_VF_MEM, MEM_FG_SYNC);
+ } else {
+ ipu_unlink_channels(CSI_PRP_VF_MEM, MEM_FG_SYNC);
+ }
+
+ ipu_disable_channel(CSI_PRP_VF_MEM, true);
+
+ if (cam->vf_rotation >= IPU_ROTATE_VERT_FLIP) {
+ ipu_disable_channel(MEM_ROT_VF_MEM, true);
+ ipu_uninit_channel(MEM_ROT_VF_MEM);
+ }
+ ipu_uninit_channel(CSI_PRP_VF_MEM);
+
+ acquire_console_sem();
+ fb_blank(fbi, FB_BLANK_POWERDOWN);
+ release_console_sem();
+
+ /* Set the overlay frame buffer std to what it is used to be */
+ fbvar = fbi->var;
+ fbvar.nonstd = cam->fb_origin_std;
+ fbvar.activate |= FB_ACTIVATE_FORCE;
+ fb_set_var(fbi, &fbvar);
+
+ 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],
+ (dma_addr_t) 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],
+ (dma_addr_t) cam->vf_bufs[1]);
+ cam->vf_bufs_vaddr[1] = NULL;
+ cam->vf_bufs[1] = 0;
+ }
+
+ cam->overlay_active = false;
+ return err;
+}
+
+/*!
+ * 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(void *private)
+{
+ cam_data *cam;
+ int err = 0;
+ if (private) {
+ cam = (cam_data *) private;
+ 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;
+ } else
+ err = -EIO;
+
+ return err;
+}
+
+/*!
+ * function to de-select PRP-VF as the working path
+ *
+ * @param private cam_data * mxc v4l2 main structure
+ *
+ * @return int
+ */
+int prp_vf_sdc_deselect(void *private)
+{
+ cam_data *cam;
+ int err = 0;
+ err = prpvf_stop(private);
+
+ if (private) {
+ cam = (cam_data *) private;
+ 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(void)
+{
+ return 0;
+}
+
+/*!
+ * Deinit viewfinder task.
+ *
+ * @return Error code indicating success or failure
+ */
+void __exit prp_vf_sdc_exit(void)
+{
+}
+
+module_init(prp_vf_sdc_init);
+module_exit(prp_vf_sdc_exit);
+
+EXPORT_SYMBOL(prp_vf_sdc_select);
+EXPORT_SYMBOL(prp_vf_sdc_deselect);
+
+MODULE_AUTHOR("Freescale Semiconductor, Inc.");
+MODULE_DESCRIPTION("IPU PRP VF SDC Driver");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.0.4) at 2024-05-13 06:44:59 +0000