diff options
Diffstat (limited to 'drivers/media/platform/mxc/capture/ipu_bg_overlay_sdc.c')
| -rw-r--r-- | drivers/media/platform/mxc/capture/ipu_bg_overlay_sdc.c | 552 |
1 files changed, 552 insertions, 0 deletions
diff --git a/drivers/media/platform/mxc/capture/ipu_bg_overlay_sdc.c b/drivers/media/platform/mxc/capture/ipu_bg_overlay_sdc.c new file mode 100644 index 000000000000..193cbd5ec0f7 --- /dev/null +++ b/drivers/media/platform/mxc/capture/ipu_bg_overlay_sdc.c @@ -0,0 +1,552 @@ + +/* + * 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"); |