| /* |
| * Copyright 2004-2014 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 <linux/module.h> |
| #include <mach/mipi_csi2.h> |
| #include "mxc_v4l2_capture.h" |
| #include "ipu_prp_sw.h" |
| |
| static int buffer_num; |
| static int buffer_ready; |
| static struct ipu_soc *disp_ipu; |
| |
| static void get_disp_ipu(cam_data *cam) |
| { |
| if (cam->output > 2) |
| disp_ipu = ipu_get_soc(1); /* using DISP4 */ |
| else |
| disp_ipu = ipu_get_soc(0); |
| } |
| |
| /* |
| * 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) |
| { |
| cam_data *cam = dev_id; |
| if (buffer_ready > 0) { |
| ipu_select_buffer(cam->ipu, 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) |
| { |
| cam_data *cam = dev_id; |
| pr_debug("buffer_ready %d buffer_num %d\n", buffer_ready, buffer_num); |
| |
| ipu_select_buffer(cam->ipu, MEM_ROT_VF_MEM, |
| IPU_INPUT_BUFFER, buffer_num); |
| buffer_num = (buffer_num == 0) ? 1 : 0; |
| ipu_select_buffer(cam->ipu, 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; |
| #ifdef CONFIG_MXC_MIPI_CSI2 |
| void *mipi_csi2_info; |
| int ipu_id; |
| int csi_id; |
| #endif |
| |
| if (!cam) { |
| printk(KERN_ERR "private is NULL\n"); |
| return -EIO; |
| } |
| |
| if (cam->overlay_active == true) { |
| pr_debug("already start.\n"); |
| return 0; |
| } |
| |
| get_disp_ipu(cam); |
| |
| 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(cam->ipu, &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; |
| |
| #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) { |
| vf.csi_prp_vf_mem.mipi_en = true; |
| vf.csi_prp_vf_mem.mipi_vc = |
| mipi_csi2_get_virtual_channel(mipi_csi2_info); |
| vf.csi_prp_vf_mem.mipi_id = |
| mipi_csi2_get_datatype(mipi_csi2_info); |
| |
| mipi_csi2_pixelclk_enable(mipi_csi2_info); |
| } else { |
| vf.csi_prp_vf_mem.mipi_en = false; |
| vf.csi_prp_vf_mem.mipi_vc = 0; |
| vf.csi_prp_vf_mem.mipi_id = 0; |
| } |
| } else { |
| vf.csi_prp_vf_mem.mipi_en = false; |
| vf.csi_prp_vf_mem.mipi_vc = 0; |
| vf.csi_prp_vf_mem.mipi_id = 0; |
| } |
| } |
| #endif |
| |
| err = ipu_init_channel(cam->ipu, CSI_PRP_VF_MEM, &vf); |
| if (err != 0) |
| goto 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]); |
| } |
| 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(cam->ipu, 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, 0); |
| if (err != 0) { |
| printk(KERN_ERR "Error initializing CSI_PRP_VF_MEM\n"); |
| goto out_3; |
| } |
| err = ipu_init_channel(cam->ipu, 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(cam->ipu, 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, 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(cam->ipu, 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, 0); |
| |
| if (err != 0) { |
| printk(KERN_ERR "Error MEM_ROT_VF_MEM output buffer\n"); |
| goto out_2; |
| } |
| } else { |
| err = ipu_init_channel_buffer(cam->ipu, 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, 0); |
| if (err != 0) { |
| printk(KERN_ERR "Error MEM_ROT_VF_MEM output buffer\n"); |
| goto out_2; |
| } |
| } |
| |
| ipu_clear_irq(cam->ipu, IPU_IRQ_PRP_VF_OUT_EOF); |
| err = ipu_request_irq(cam->ipu, 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(disp_ipu, IPU_IRQ_BG_SF_END); |
| err = ipu_request_irq(disp_ipu, IPU_IRQ_BG_SF_END, |
| prpvf_sdc_vsync_callback, |
| 0, "Mxc Camera", cam); |
| if (err != 0) { |
| printk(KERN_ERR "Error registering IPU_IRQ_BG_SF_END irq.\n"); |
| goto out_1; |
| } |
| |
| ipu_enable_channel(cam->ipu, CSI_PRP_VF_MEM); |
| ipu_enable_channel(cam->ipu, MEM_ROT_VF_MEM); |
| |
| buffer_num = 0; |
| buffer_ready = 0; |
| ipu_select_buffer(cam->ipu, CSI_PRP_VF_MEM, IPU_OUTPUT_BUFFER, 0); |
| |
| cam->overlay_active = true; |
| return err; |
| |
| out_1: |
| ipu_free_irq(cam->ipu, IPU_IRQ_PRP_VF_OUT_EOF, NULL); |
| out_2: |
| ipu_uninit_channel(cam->ipu, MEM_ROT_VF_MEM); |
| out_3: |
| ipu_uninit_channel(cam->ipu, 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; |
| #ifdef CONFIG_MXC_MIPI_CSI2 |
| void *mipi_csi2_info; |
| int ipu_id; |
| int csi_id; |
| #endif |
| |
| if (cam->overlay_active == false) |
| return 0; |
| |
| ipu_free_irq(disp_ipu, IPU_IRQ_BG_SF_END, cam); |
| |
| ipu_disable_channel(cam->ipu, CSI_PRP_VF_MEM, true); |
| ipu_disable_channel(cam->ipu, MEM_ROT_VF_MEM, true); |
| ipu_uninit_channel(cam->ipu, CSI_PRP_VF_MEM); |
| ipu_uninit_channel(cam->ipu, MEM_ROT_VF_MEM); |
| |
| #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 |
| |
| 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->ipu, 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; |
| |
| /* free csi eof irq firstly. |
| * when disable csi, wait for idmac eof. |
| * it requests eof irq again */ |
| ipu_free_irq(cam->ipu, IPU_IRQ_PRP_VF_OUT_EOF, cam); |
| |
| return ipu_disable_csi(cam->ipu, 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; |
| } |
| EXPORT_SYMBOL(prp_vf_sdc_select_bg); |
| |
| /*! |
| * 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; |
| |
| if (cam) { |
| cam->vf_start_sdc = NULL; |
| cam->vf_stop_sdc = NULL; |
| cam->vf_enable_csi = NULL; |
| cam->vf_disable_csi = NULL; |
| } |
| return 0; |
| } |
| EXPORT_SYMBOL(prp_vf_sdc_deselect_bg); |
| |
| /*! |
| * 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); |
| |
| MODULE_AUTHOR("Freescale Semiconductor, Inc."); |
| MODULE_DESCRIPTION("IPU PRP VF SDC Backgroud Driver"); |
| MODULE_LICENSE("GPL"); |