| /* |
| * 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_foreground_sdc.c |
| * |
| * @brief IPU Use case for PRP-VF |
| * |
| * @ingroup IPU |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/dma-mapping.h> |
| #include <linux/console.h> |
| #include <linux/ipu.h> |
| #include <linux/mxcfb.h> |
| #include <linux/mipi_csi2.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 int csi_buffer_num, buffer_num; |
| static u32 csi_mem_bufsize; |
| static struct ipu_soc *disp_ipu; |
| static struct fb_info *fbi; |
| static struct fb_var_screeninfo fbvar; |
| static u32 vf_out_format; |
| 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_NV12; |
| |
| if (buffer_num == 0) |
| task.output.paddr = fbi->fix.smem_start + |
| (fbi->fix.line_length * fbvar.yres); |
| else |
| task.output.paddr = fbi->fix.smem_start; |
| task.output.width = cam->win.w.width; |
| task.output.height = cam->win.w.height; |
| task.output.format = vf_out_format; |
| task.output.rotate = cam->rotation; |
| 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"); |
| ipu_select_buffer(disp_ipu, MEM_FG_SYNC, IPU_INPUT_BUFFER, buffer_num); |
| buffer_num = (buffer_num == 0) ? 1 : 0; |
| } |
| |
| 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); |
| |
| if ((cam->crop_current.width != cam->win.w.width) || |
| (cam->crop_current.height != cam->win.w.height) || |
| (vf_out_format != IPU_PIX_FMT_NV12) || |
| (cam->rotation >= IPU_ROTATE_VERT_FLIP)) |
| 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; |
| 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 |
| |
| CAMERA_TRACE("In csi_enc_setup\n"); |
| 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 * 3/2; |
| 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; |
| } |
| |
| if ((cam->crop_current.width == cam->win.w.width) && |
| (cam->crop_current.height == cam->win.w.height) && |
| (vf_out_format == IPU_PIX_FMT_NV12) && |
| (cam->rotation < IPU_ROTATE_VERT_FLIP)) { |
| err = ipu_init_channel_buffer(cam->ipu, chan, |
| IPU_OUTPUT_BUFFER, IPU_PIX_FMT_NV12, |
| cam->crop_current.width, |
| cam->crop_current.height, |
| cam->crop_current.width, IPU_ROTATE_NONE, |
| fbi->fix.smem_start + |
| (fbi->fix.line_length * fbvar.yres), |
| fbi->fix.smem_start, 0, |
| cam->offset.u_offset, cam->offset.u_offset); |
| } else { |
| err = ipu_init_channel_buffer(cam->ipu, chan, |
| IPU_OUTPUT_BUFFER, IPU_PIX_FMT_NV12, |
| 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; |
| CAMERA_TRACE("IPU:In csi_enc_enabling_tasks\n"); |
| |
| 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; |
| } |
| |
| /* |
| * Function definitions |
| */ |
| |
| /*! |
| * foreground_start - start the vf task |
| * |
| * @param private cam_data * mxc v4l2 main structure |
| * |
| */ |
| static int foreground_start(void *private) |
| { |
| cam_data *cam = (cam_data *) private; |
| int err = 0, i = 0, screen_size; |
| char *base; |
| |
| if (!cam) { |
| printk(KERN_ERR "private is NULL\n"); |
| return -EIO; |
| } |
| |
| if (cam->overlay_active == true) { |
| pr_debug("already started.\n"); |
| return 0; |
| } |
| |
| get_disp_ipu(cam); |
| |
| for (i = 0; i < num_registered_fb; i++) { |
| char *idstr = registered_fb[i]->fix.id; |
| if (((strcmp(idstr, "DISP3 FG") == 0) && (cam->output < 3)) || |
| ((strcmp(idstr, "DISP4 FG") == 0) && (cam->output >= 3))) { |
| fbi = registered_fb[i]; |
| break; |
| } |
| } |
| |
| if (fbi == NULL) { |
| printk(KERN_ERR "DISP 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 (cam->devtype == IMX5_V4L2 || cam->devtype == IMX6_V4L2) { |
| /* Use DP to do CSC so that we can get better performance */ |
| vf_out_format = IPU_PIX_FMT_NV12; |
| fbvar.nonstd = vf_out_format; |
| } else { |
| vf_out_format = IPU_PIX_FMT_RGB565; |
| fbvar.nonstd = 0; |
| } |
| |
| 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.vmode &= ~FB_VMODE_YWRAP; |
| fbvar.accel_flags = FB_ACCEL_DOUBLE_FLAG; |
| fbvar.activate |= FB_ACTIVATE_FORCE; |
| fb_set_var(fbi, &fbvar); |
| |
| ipu_disp_set_window_pos(disp_ipu, MEM_FG_SYNC, cam->win.w.left, |
| cam->win.w.top); |
| |
| /* Fill black color for framebuffer */ |
| base = (char *) fbi->screen_base; |
| screen_size = fbi->var.xres * fbi->var.yres; |
| if (cam->devtype == IMX5_V4L2 || cam->devtype == IMX6_V4L2) { |
| memset(base, 0, screen_size); |
| base += screen_size; |
| for (i = 0; i < screen_size / 2; i++, base++) |
| *base = 0x80; |
| } else { |
| for (i = 0; i < screen_size * 2; i++, base++) |
| *base = 0x00; |
| } |
| |
| console_lock(); |
| fb_blank(fbi, FB_BLANK_UNBLANK); |
| console_unlock(); |
| |
| /* correct display ch buffer address */ |
| ipu_update_channel_buffer(disp_ipu, MEM_FG_SYNC, IPU_INPUT_BUFFER, |
| 0, fbi->fix.smem_start + |
| (fbi->fix.line_length * fbvar.yres)); |
| ipu_update_channel_buffer(disp_ipu, MEM_FG_SYNC, IPU_INPUT_BUFFER, |
| 1, fbi->fix.smem_start); |
| |
| 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; |
| |
| } |
| |
| /*! |
| * foreground_stop - stop the vf task |
| * |
| * @param private cam_data * mxc v4l2 main structure |
| * |
| */ |
| static int foreground_stop(void *private) |
| { |
| cam_data *cam = (cam_data *) private; |
| int err = 0, i = 0; |
| struct fb_info *fbi = NULL; |
| struct fb_var_screeninfo fbvar; |
| 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; |
| buffer_num = 0; |
| |
| for (i = 0; i < num_registered_fb; i++) { |
| char *idstr = registered_fb[i]->fix.id; |
| if (((strcmp(idstr, "DISP3 FG") == 0) && (cam->output < 3)) || |
| ((strcmp(idstr, "DISP4 FG") == 0) && (cam->output >= 3))) { |
| fbi = registered_fb[i]; |
| break; |
| } |
| } |
| |
| if (fbi == NULL) { |
| printk(KERN_ERR "DISP FG fb not found\n"); |
| return -EPERM; |
| } |
| |
| console_lock(); |
| fb_blank(fbi, FB_BLANK_POWERDOWN); |
| console_unlock(); |
| |
| /* Set the overlay frame buffer std to what it is used to be */ |
| fbvar = fbi->var; |
| fbvar.accel_flags = FB_ACCEL_TRIPLE_FLAG; |
| fbvar.nonstd = cam->fb_origin_std; |
| fbvar.activate |= FB_ACTIVATE_FORCE; |
| fb_set_var(fbi, &fbvar); |
| |
| #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], |
| (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 foreground_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 foreground_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 foreground as the working path |
| * |
| * @param private cam_data * mxc v4l2 main structure |
| * |
| * @return status |
| */ |
| int foreground_sdc_select(void *private) |
| { |
| cam_data *cam; |
| int err = 0; |
| if (private) { |
| cam = (cam_data *) private; |
| cam->vf_start_sdc = foreground_start; |
| cam->vf_stop_sdc = foreground_stop; |
| cam->vf_enable_csi = foreground_enable_csi; |
| cam->vf_disable_csi = foreground_disable_csi; |
| cam->overlay_active = false; |
| } else |
| err = -EIO; |
| |
| return err; |
| } |
| EXPORT_SYMBOL(foreground_sdc_select); |
| |
| /*! |
| * function to de-select foreground as the working path |
| * |
| * @param private cam_data * mxc v4l2 main structure |
| * |
| * @return int |
| */ |
| int foreground_sdc_deselect(void *private) |
| { |
| cam_data *cam; |
| |
| 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 0; |
| } |
| EXPORT_SYMBOL(foreground_sdc_deselect); |
| |
| /*! |
| * Init viewfinder task. |
| * |
| * @return Error code indicating success or failure |
| */ |
| __init int foreground_sdc_init(void) |
| { |
| return 0; |
| } |
| |
| /*! |
| * Deinit viewfinder task. |
| * |
| * @return Error code indicating success or failure |
| */ |
| void __exit foreground_sdc_exit(void) |
| { |
| } |
| |
| module_init(foreground_sdc_init); |
| module_exit(foreground_sdc_exit); |
| |
| MODULE_AUTHOR("Freescale Semiconductor, Inc."); |
| MODULE_DESCRIPTION("IPU PRP VF SDC Driver"); |
| MODULE_LICENSE("GPL"); |