| |
| /* |
| * Copyright 2004-2015 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_bg_overlay_sdc_bg.c |
| * |
| * @brief IPU Use case for PRP-VF back-ground |
| * |
| * @ingroup IPU |
| */ |
| #include <linux/module.h> |
| #include <linux/dma-mapping.h> |
| #include <linux/fb.h> |
| #include <linux/ipu.h> |
| #include <linux/mipi_csi2.h> |
| #include "mxc_v4l2_capture.h" |
| #include "ipu_prp_sw.h" |
| |
| static int csi_buffer_num; |
| static u32 bpp, csi_mem_bufsize = 3; |
| static u32 out_format; |
| static struct ipu_soc *disp_ipu; |
| static u32 offset; |
| |
| static void csi_buf_work_func(struct work_struct *work) |
| { |
| int err = 0; |
| cam_data *cam = |
| container_of(work, struct _cam_data, csi_work_struct); |
| |
| struct ipu_task task; |
| memset(&task, 0, sizeof(task)); |
| |
| if (csi_buffer_num) |
| task.input.paddr = cam->vf_bufs[0]; |
| else |
| task.input.paddr = cam->vf_bufs[1]; |
| task.input.width = cam->crop_current.width; |
| task.input.height = cam->crop_current.height; |
| task.input.format = IPU_PIX_FMT_UYVY; |
| |
| task.output.paddr = offset; |
| task.output.width = cam->overlay_fb->var.xres; |
| task.output.height = cam->overlay_fb->var.yres; |
| task.output.format = out_format; |
| task.output.rotate = cam->rotation; |
| task.output.crop.pos.x = cam->win.w.left; |
| task.output.crop.pos.y = cam->win.w.top; |
| if (cam->win.w.width > 1024 || cam->win.w.height > 1024) { |
| task.output.crop.w = cam->overlay_fb->var.xres; |
| task.output.crop.h = cam->overlay_fb->var.yres; |
| } else { |
| task.output.crop.w = cam->win.w.width; |
| task.output.crop.h = cam->win.w.height; |
| } |
| again: |
| err = ipu_check_task(&task); |
| if (err != IPU_CHECK_OK) { |
| if (err > IPU_CHECK_ERR_MIN) { |
| if (err == IPU_CHECK_ERR_SPLIT_INPUTW_OVER) { |
| task.input.crop.w -= 8; |
| goto again; |
| } |
| if (err == IPU_CHECK_ERR_SPLIT_INPUTH_OVER) { |
| task.input.crop.h -= 8; |
| goto again; |
| } |
| if (err == IPU_CHECK_ERR_SPLIT_OUTPUTW_OVER) { |
| task.output.width -= 8; |
| task.output.crop.w = task.output.width; |
| goto again; |
| } |
| if (err == IPU_CHECK_ERR_SPLIT_OUTPUTH_OVER) { |
| task.output.height -= 8; |
| task.output.crop.h = task.output.height; |
| goto again; |
| } |
| printk(KERN_ERR "check ipu taks fail\n"); |
| return; |
| } |
| printk(KERN_ERR "check ipu taks fail\n"); |
| return; |
| } |
| err = ipu_queue_task(&task); |
| if (err < 0) |
| printk(KERN_ERR "queue ipu task error\n"); |
| } |
| |
| 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); |
| } |
| |
| |
| /*! |
| * csi ENC callback function. |
| * |
| * @param irq int irq line |
| * @param dev_id void * device id |
| * |
| * @return status IRQ_HANDLED for handled |
| */ |
| static irqreturn_t csi_enc_callback(int irq, void *dev_id) |
| { |
| cam_data *cam = (cam_data *) dev_id; |
| ipu_channel_t chan = (irq == IPU_IRQ_CSI0_OUT_EOF) ? |
| CSI_MEM0 : CSI_MEM1; |
| |
| ipu_select_buffer(cam->ipu, chan, |
| IPU_OUTPUT_BUFFER, csi_buffer_num); |
| schedule_work(&cam->csi_work_struct); |
| csi_buffer_num = (csi_buffer_num == 0) ? 1 : 0; |
| return IRQ_HANDLED; |
| } |
| |
| static int csi_enc_setup(cam_data *cam) |
| { |
| ipu_channel_params_t params; |
| u32 pixel_fmt; |
| int err = 0, sensor_protocol = 0; |
| ipu_channel_t chan = (cam->csi == 0) ? CSI_MEM0 : CSI_MEM1; |
| |
| #ifdef CONFIG_MXC_MIPI_CSI2 |
| void *mipi_csi2_info; |
| int ipu_id; |
| int csi_id; |
| #endif |
| |
| if (!cam) { |
| printk(KERN_ERR "cam private is NULL\n"); |
| return -ENXIO; |
| } |
| |
| memset(¶ms, 0, sizeof(ipu_channel_params_t)); |
| params.csi_mem.csi = cam->csi; |
| |
| sensor_protocol = ipu_csi_get_sensor_protocol(cam->ipu, cam->csi); |
| switch (sensor_protocol) { |
| case IPU_CSI_CLK_MODE_GATED_CLK: |
| case IPU_CSI_CLK_MODE_NONGATED_CLK: |
| case IPU_CSI_CLK_MODE_CCIR656_PROGRESSIVE: |
| case IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_DDR: |
| case IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_SDR: |
| params.csi_mem.interlaced = false; |
| break; |
| case IPU_CSI_CLK_MODE_CCIR656_INTERLACED: |
| case IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_DDR: |
| case IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_SDR: |
| params.csi_mem.interlaced = true; |
| break; |
| default: |
| printk(KERN_ERR "sensor protocol unsupported\n"); |
| return -EINVAL; |
| } |
| |
| #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) { |
| params.csi_mem.mipi_en = true; |
| params.csi_mem.mipi_vc = |
| mipi_csi2_get_virtual_channel(mipi_csi2_info); |
| params.csi_mem.mipi_id = |
| mipi_csi2_get_datatype(mipi_csi2_info); |
| |
| mipi_csi2_pixelclk_enable(mipi_csi2_info); |
| } else { |
| params.csi_mem.mipi_en = false; |
| params.csi_mem.mipi_vc = 0; |
| params.csi_mem.mipi_id = 0; |
| } |
| } else { |
| params.csi_mem.mipi_en = false; |
| params.csi_mem.mipi_vc = 0; |
| params.csi_mem.mipi_id = 0; |
| } |
| } |
| #endif |
| |
| 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]); |
| } |
| csi_mem_bufsize = |
| cam->crop_current.width * cam->crop_current.height * 2; |
| cam->vf_bufs_size[0] = PAGE_ALIGN(csi_mem_bufsize); |
| 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_2; |
| } |
| cam->vf_bufs_size[1] = PAGE_ALIGN(csi_mem_bufsize); |
| 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_1; |
| } |
| pr_debug("vf_bufs %x %x\n", cam->vf_bufs[0], cam->vf_bufs[1]); |
| |
| err = ipu_init_channel(cam->ipu, chan, ¶ms); |
| if (err != 0) { |
| printk(KERN_ERR "ipu_init_channel %d\n", err); |
| goto out_1; |
| } |
| |
| pixel_fmt = IPU_PIX_FMT_UYVY; |
| err = ipu_init_channel_buffer( |
| cam->ipu, chan, IPU_OUTPUT_BUFFER, pixel_fmt, |
| cam->crop_current.width, cam->crop_current.height, |
| cam->crop_current.width, IPU_ROTATE_NONE, |
| cam->vf_bufs[0], cam->vf_bufs[1], 0, |
| cam->offset.u_offset, cam->offset.u_offset); |
| if (err != 0) { |
| printk(KERN_ERR "CSI_MEM output buffer\n"); |
| goto out_1; |
| } |
| err = ipu_enable_channel(cam->ipu, chan); |
| if (err < 0) { |
| printk(KERN_ERR "ipu_enable_channel CSI_MEM\n"); |
| goto out_1; |
| } |
| |
| csi_buffer_num = 0; |
| |
| ipu_select_buffer(cam->ipu, chan, IPU_OUTPUT_BUFFER, 0); |
| ipu_select_buffer(cam->ipu, chan, IPU_OUTPUT_BUFFER, 1); |
| return err; |
| out_1: |
| 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_2: |
| return err; |
| } |
| |
| /*! |
| * Enable encoder task |
| * @param private struct cam_data * mxc capture instance |
| * |
| * @return status |
| */ |
| static int csi_enc_enabling_tasks(void *private) |
| { |
| cam_data *cam = (cam_data *) private; |
| int err = 0; |
| |
| ipu_clear_irq(cam->ipu, IPU_IRQ_CSI0_OUT_EOF + cam->csi); |
| err = ipu_request_irq(cam->ipu, IPU_IRQ_CSI0_OUT_EOF + cam->csi, |
| csi_enc_callback, 0, "Mxc Camera", cam); |
| if (err != 0) { |
| printk(KERN_ERR "Error registering CSI_OUT_EOF irq\n"); |
| return err; |
| } |
| |
| INIT_WORK(&cam->csi_work_struct, csi_buf_work_func); |
| |
| err = csi_enc_setup(cam); |
| if (err != 0) { |
| printk(KERN_ERR "csi_enc_setup %d\n", err); |
| goto out1; |
| } |
| |
| return err; |
| out1: |
| ipu_free_irq(cam->ipu, IPU_IRQ_CSI0_OUT_EOF + cam->csi, cam); |
| return err; |
| } |
| |
| /*! |
| * bg_overlay_start - start the overlay task |
| * |
| * @param private cam_data * mxc v4l2 main structure |
| * |
| */ |
| static int bg_overlay_start(void *private) |
| { |
| cam_data *cam = (cam_data *) private; |
| 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; |
| } |
| |
| get_disp_ipu(cam); |
| |
| out_format = cam->v4l2_fb.fmt.pixelformat; |
| if (cam->v4l2_fb.fmt.pixelformat == IPU_PIX_FMT_BGR24) { |
| bpp = 3, csi_mem_bufsize = 3; |
| pr_info("BGR24\n"); |
| } else if (cam->v4l2_fb.fmt.pixelformat == IPU_PIX_FMT_RGB565) { |
| bpp = 2, csi_mem_bufsize = 2; |
| pr_info("RGB565\n"); |
| } else if (cam->v4l2_fb.fmt.pixelformat == IPU_PIX_FMT_BGR32) { |
| bpp = 4, csi_mem_bufsize = 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 + |
| csi_mem_bufsize * 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; |
| |
| csi_mem_bufsize = cam->win.w.width * cam->win.w.height |
| * csi_mem_bufsize; |
| |
| err = csi_enc_enabling_tasks(cam); |
| if (err != 0) { |
| printk(KERN_ERR "Error csi enc enable fail\n"); |
| return err; |
| } |
| |
| cam->overlay_active = true; |
| return err; |
| } |
| |
| /*! |
| * bg_overlay_stop - stop the overlay task |
| * |
| * @param private cam_data * mxc v4l2 main structure |
| * |
| */ |
| static int bg_overlay_stop(void *private) |
| { |
| int err = 0; |
| cam_data *cam = (cam_data *) private; |
| ipu_channel_t chan = (cam->csi == 0) ? CSI_MEM0 : CSI_MEM1; |
| #ifdef CONFIG_MXC_MIPI_CSI2 |
| void *mipi_csi2_info; |
| int ipu_id; |
| int csi_id; |
| #endif |
| |
| if (cam->overlay_active == false) |
| return 0; |
| |
| err = ipu_disable_channel(cam->ipu, chan, true); |
| |
| ipu_uninit_channel(cam->ipu, chan); |
| |
| csi_buffer_num = 0; |
| |
| #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 |
| |
| flush_work(&cam->csi_work_struct); |
| cancel_work_sync(&cam->csi_work_struct); |
| |
| 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; |
| } |
| |
| cam->overlay_active = false; |
| return err; |
| } |
| |
| /*! |
| * Enable csi |
| * @param private struct cam_data * mxc capture instance |
| * |
| * @return status |
| */ |
| static int bg_overlay_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 bg_overlay_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_CSI0_OUT_EOF + cam->csi, cam); |
| |
| return ipu_disable_csi(cam->ipu, cam->csi); |
| } |
| |
| /*! |
| * function to select bg as the working path |
| * |
| * @param private cam_data * mxc v4l2 main structure |
| * |
| * @return status |
| */ |
| int bg_overlay_sdc_select(void *private) |
| { |
| cam_data *cam = (cam_data *) private; |
| |
| if (cam) { |
| cam->vf_start_sdc = bg_overlay_start; |
| cam->vf_stop_sdc = bg_overlay_stop; |
| cam->vf_enable_csi = bg_overlay_enable_csi; |
| cam->vf_disable_csi = bg_overlay_disable_csi; |
| cam->overlay_active = false; |
| } |
| |
| return 0; |
| } |
| EXPORT_SYMBOL(bg_overlay_sdc_select); |
| |
| /*! |
| * function to de-select bg as the working path |
| * |
| * @param private cam_data * mxc v4l2 main structure |
| * |
| * @return status |
| */ |
| int bg_overlay_sdc_deselect(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(bg_overlay_sdc_deselect); |
| |
| /*! |
| * Init background overlay task. |
| * |
| * @return Error code indicating success or failure |
| */ |
| __init int bg_overlay_sdc_init(void) |
| { |
| return 0; |
| } |
| |
| /*! |
| * Deinit background overlay task. |
| * |
| * @return Error code indicating success or failure |
| */ |
| void __exit bg_overlay_sdc_exit(void) |
| { |
| } |
| |
| module_init(bg_overlay_sdc_init); |
| module_exit(bg_overlay_sdc_exit); |
| |
| MODULE_AUTHOR("Freescale Semiconductor, Inc."); |
| MODULE_DESCRIPTION("IPU PRP VF SDC Backgroud Driver"); |
| MODULE_LICENSE("GPL"); |