diff options
Diffstat (limited to 'drivers/media/video/mxc/output/mx31_v4l2_wvga_output.c')
| -rw-r--r-- | drivers/media/video/mxc/output/mx31_v4l2_wvga_output.c | 1928 |
1 files changed, 1928 insertions, 0 deletions
diff --git a/drivers/media/video/mxc/output/mx31_v4l2_wvga_output.c b/drivers/media/video/mxc/output/mx31_v4l2_wvga_output.c new file mode 100644 index 000000000000..fe4346ee56dd --- /dev/null +++ b/drivers/media/video/mxc/output/mx31_v4l2_wvga_output.c @@ -0,0 +1,1928 @@ +/* + * Copyright 2005-2010 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 drivers/media/video/mxc/output/mxc_v4l2_output.c + * + * @brief MXC V4L2 Video Output Driver + * + * Video4Linux2 Output Device using MXC IPU Post-processing functionality. + * + * @ingroup MXC_V4L2_OUTPUT + */ +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/console.h> +#include <linux/fs.h> +#include <linux/delay.h> +#include <linux/platform_device.h> +#include <asm/cacheflush.h> +#include <asm/io.h> +#include <asm/semaphore.h> +#include <linux/dma-mapping.h> + +#include <mach/mxcfb.h> +#include <mach/ipu.h> + +#include "mxc_v4l2_output.h" + +vout_data *g_vout; +#define SDC_FG_FB_FORMAT IPU_PIX_FMT_RGB565 + +struct v4l2_output mxc_outputs[2] = { + { + .index = MXC_V4L2_OUT_2_SDC, + .name = "DISP3 Video Out", + .type = V4L2_OUTPUT_TYPE_ANALOG, /* not really correct, + but no other choice */ + .audioset = 0, + .modulator = 0, + .std = V4L2_STD_UNKNOWN}, + { + .index = MXC_V4L2_OUT_2_ADC, + .name = "DISPx Video Out", + .type = V4L2_OUTPUT_TYPE_ANALOG, /* not really correct, + but no other choice */ + .audioset = 0, + .modulator = 0, + .std = V4L2_STD_UNKNOWN} +}; + +static int video_nr = 16; +static DEFINE_SPINLOCK(g_lock); +static unsigned int g_pp_out_number; +static unsigned int g_pp_in_number; + +/* debug counters */ +uint32_t g_irq_cnt; +uint32_t g_buf_output_cnt; +uint32_t g_buf_q_cnt; +uint32_t g_buf_dq_cnt; + +static inline uint32_t channel_2_dma(ipu_channel_t ch, ipu_buffer_t type) +{ + return ((type == IPU_INPUT_BUFFER) ? ((uint32_t) ch & 0xFF) : + ((type == IPU_OUTPUT_BUFFER) ? (((uint32_t) ch >> 8) & 0xFF) + : (((uint32_t) ch >> 16) & 0xFF))); +}; + +static inline uint32_t DMAParamAddr(uint32_t dma_ch) +{ + return 0x10000 | (dma_ch << 4); +}; + +#define QUEUE_SIZE (MAX_FRAME_NUM + 1) +static inline int queue_size(v4l_queue *q) +{ + if (q->tail >= q->head) + return q->tail - q->head; + else + return (q->tail + QUEUE_SIZE) - q->head; +} + +static inline int queue_buf(v4l_queue *q, int idx) +{ + if (((q->tail + 1) % QUEUE_SIZE) == q->head) + return -1; /* queue full */ + q->list[q->tail] = idx; + q->tail = (q->tail + 1) % QUEUE_SIZE; + return 0; +} + +static inline int dequeue_buf(v4l_queue *q) +{ + int ret; + if (q->tail == q->head) + return -1; /* queue empty */ + ret = q->list[q->head]; + q->head = (q->head + 1) % QUEUE_SIZE; + return ret; +} + +static inline int peek_next_buf(v4l_queue *q) +{ + if (q->tail == q->head) + return -1; /* queue empty */ + return q->list[q->head]; +} + +static inline unsigned long get_jiffies(struct timeval *t) +{ + struct timeval cur; + + if (t->tv_usec >= 1000000) { + t->tv_sec += t->tv_usec / 1000000; + t->tv_usec = t->tv_usec % 1000000; + } + + do_gettimeofday(&cur); + if ((t->tv_sec < cur.tv_sec) + || ((t->tv_sec == cur.tv_sec) && (t->tv_usec < cur.tv_usec))) + return jiffies; + + if (t->tv_usec < cur.tv_usec) { + cur.tv_sec = t->tv_sec - cur.tv_sec - 1; + cur.tv_usec = t->tv_usec + 1000000 - cur.tv_usec; + } else { + cur.tv_sec = t->tv_sec - cur.tv_sec; + cur.tv_usec = t->tv_usec - cur.tv_usec; + } + + return jiffies + timeval_to_jiffies(&cur); +} + +/*! + * Private function to free buffers + * + * @param bufs_paddr Array of physical address of buffers to be freed + * + * @param bufs_vaddr Array of virtual address of buffers to be freed + * + * @param num_buf Number of buffers to be freed + * + * @param size Size for each buffer to be free + * + * @return status 0 success. + */ +static int mxc_free_buffers(dma_addr_t bufs_paddr[], void *bufs_vaddr[], + int num_buf, int size) +{ + int i; + + for (i = 0; i < num_buf; i++) { + if (bufs_vaddr[i] != 0) { + dma_free_coherent(0, size, bufs_vaddr[i], + bufs_paddr[i]); + pr_debug("freed @ paddr=0x%08X\n", (u32) bufs_paddr[i]); + bufs_paddr[i] = 0; + bufs_vaddr[i] = NULL; + } + } + return 0; +} + +/*! + * Private function to allocate buffers + * + * @param bufs_paddr Output array of physical address of buffers allocated + * + * @param bufs_vaddr Output array of virtual address of buffers allocated + * + * @param num_buf Input number of buffers to allocate + * + * @param size Input size for each buffer to allocate + * + * @return status -0 Successfully allocated a buffer, -ENOBUFS failed. + */ +static int mxc_allocate_buffers(dma_addr_t bufs_paddr[], void *bufs_vaddr[], + int num_buf, int size) +{ + int i; + + for (i = 0; i < num_buf; i++) { + bufs_vaddr[i] = dma_alloc_coherent(0, size, + &bufs_paddr[i], + GFP_DMA | GFP_KERNEL); + + if (bufs_vaddr[i] == 0) { + mxc_free_buffers(bufs_paddr, bufs_vaddr, i, size); + printk(KERN_ERR "dma_alloc_coherent failed.\n"); + return -ENOBUFS; + } + pr_debug("allocated @ paddr=0x%08X, size=%d.\n", + (u32) bufs_paddr[i], size); + } + + return 0; +} + +/* + * Returns bits per pixel for given pixel format + * + * @param pixelformat V4L2_PIX_FMT_RGB565, + * V4L2_PIX_FMT_BGR24 or V4L2_PIX_FMT_BGR32 + * + * @return bits per pixel of pixelformat + */ +static u32 fmt_to_bpp(u32 pixelformat) +{ + u32 bpp; + + switch (pixelformat) { + case V4L2_PIX_FMT_RGB565: + bpp = 16; + break; + case V4L2_PIX_FMT_BGR24: + case V4L2_PIX_FMT_RGB24: + bpp = 24; + break; + case V4L2_PIX_FMT_BGR32: + case V4L2_PIX_FMT_RGB32: + bpp = 32; + break; + default: + bpp = 8; + break; + } + return bpp; +} + +static u32 bpp_to_fmt(struct fb_info *fbi) +{ + if (fbi->var.nonstd) + return fbi->var.nonstd; + + if (fbi->var.bits_per_pixel == 24) + return V4L2_PIX_FMT_BGR24; + else if (fbi->var.bits_per_pixel == 32) + return V4L2_PIX_FMT_BGR32; + else if (fbi->var.bits_per_pixel == 16) + return V4L2_PIX_FMT_RGB565; + + return 0; +} + +static void mxc_v4l2out_timer_handler(unsigned long arg) +{ + int index; + unsigned long timeout; + unsigned long lock_flags = 0; + vout_data *vout = (vout_data *) arg; + + dev_dbg(vout->video_dev->dev, "timer handler: %lu\n", jiffies); + + spin_lock_irqsave(&g_lock, lock_flags); + + if ((vout->state == STATE_STREAM_STOPPING) + || (vout->state == STATE_STREAM_OFF)) + goto exit0; + /* + * If timer occurs before IPU h/w is ready, then set the state to + * paused and the timer will be set again when next buffer is queued + * or PP comletes + */ + if (vout->ipu_buf[0] != -1) { + dev_dbg(vout->video_dev->dev, "IPU buffer busy\n"); + vout->state = STATE_STREAM_PAUSED; + goto exit0; + } + + /* One frame buffer should be ready here */ + if (vout->frame_count % 2 == 1) { + /* set BUF0 rdy */ + if (ipu_select_buffer(vout->display_ch, IPU_INPUT_BUFFER, 0) < + 0) + pr_debug("error selecting display buf 0"); + } else { + if (ipu_select_buffer(vout->display_ch, IPU_INPUT_BUFFER, 1) < + 0) + pr_debug("error selecting display buf 1"); + } + + /* Dequeue buffer and pass to IPU */ + index = dequeue_buf(&vout->ready_q); + if (index == -1) { /* no buffers ready, should never occur */ + dev_err(vout->video_dev->dev, + "mxc_v4l2out: timer - no queued buffers ready\n"); + goto exit0; + } + + g_buf_dq_cnt++; + vout->frame_count++; + vout->ipu_buf[1] = vout->ipu_buf[0] = index; + + if (ipu_update_channel_buffer(vout->post_proc_ch, IPU_INPUT_BUFFER, + 0, + vout->v4l2_bufs[vout->ipu_buf[0]].m. + offset) < 0) + goto exit0; + + if (ipu_update_channel_buffer(vout->post_proc_ch, IPU_INPUT_BUFFER, + 1, + vout->v4l2_bufs[vout->ipu_buf[0]].m. + offset + vout->v2f.fmt.pix.width / 2) < 0) + goto exit0; + + /* All buffer should now ready in IPU out, tranfer to display buf */ + if (ipu_update_channel_buffer(vout->post_proc_ch, IPU_OUTPUT_BUFFER, + 0, + vout-> + display_bufs[(vout->frame_count - + 1) % 2]) < 0) { + dev_err(vout->video_dev->dev, + "unable to update buffer %d address\n", + vout->next_rdy_ipu_buf); + goto exit0; + } + if (ipu_update_channel_buffer(vout->post_proc_ch, IPU_OUTPUT_BUFFER, + 1, + vout-> + display_bufs[(vout->frame_count - + 1) % 2] + + vout->crop_current.width / 2 * + bytes_per_pixel(SDC_FG_FB_FORMAT)) < 0) { + dev_err(vout->video_dev->dev, + "unable to update buffer %d address\n", + vout->next_rdy_ipu_buf); + goto exit0; + } + + if (ipu_select_buffer(vout->post_proc_ch, IPU_INPUT_BUFFER, 0) < 0) { + dev_err(vout->video_dev->dev, + "unable to set IPU buffer ready\n"); + goto exit0; + } + + if (ipu_select_buffer(vout->post_proc_ch, IPU_OUTPUT_BUFFER, 0) < 0) { + dev_err(vout->video_dev->dev, + "unable to set IPU buffer ready\n"); + goto exit0; + } + + /* Setup timer for next buffer */ + index = peek_next_buf(&vout->ready_q); + if (index != -1) { + /* if timestamp is 0, then default to 30fps */ + if ((vout->v4l2_bufs[index].timestamp.tv_sec == 0) + && (vout->v4l2_bufs[index].timestamp.tv_usec == 0)) + timeout = + vout->start_jiffies + vout->frame_count * HZ / 30; + else + timeout = + get_jiffies(&vout->v4l2_bufs[index].timestamp); + + if (jiffies >= timeout) { + dev_dbg(vout->video_dev->dev, + "warning: timer timeout already expired.\n"); + } + if (mod_timer(&vout->output_timer, timeout)) + dev_dbg(vout->video_dev->dev, + "warning: timer was already set\n"); + + dev_dbg(vout->video_dev->dev, + "timer handler next schedule: %lu\n", timeout); + } else { + vout->state = STATE_STREAM_PAUSED; + } + +exit0: + spin_unlock_irqrestore(&g_lock, lock_flags); +} + +extern void _ipu_write_param_mem(uint32_t addr, uint32_t *data, + uint32_t numWords); + +static irqreturn_t mxc_v4l2out_pp_in_irq_handler(int irq, void *dev_id) +{ + unsigned long lock_flags = 0; + vout_data *vout = dev_id; + uint32_t u_offset; + uint32_t v_offset; + uint32_t local_params[4]; + uint32_t width, height; + uint32_t dma_chan; + + spin_lock_irqsave(&g_lock, lock_flags); + g_irq_cnt++; + + dma_chan = channel_2_dma(vout->post_proc_ch, IPU_INPUT_BUFFER); + memset(&local_params, 0, sizeof(local_params)); + + if (g_pp_in_number % 2 == 1) { + u_offset = vout->offset.u_offset - vout->v2f.fmt.pix.width / 4; + v_offset = vout->offset.v_offset - vout->v2f.fmt.pix.width / 4; + width = vout->v2f.fmt.pix.width / 2; + height = vout->v2f.fmt.pix.height; + local_params[3] = + (uint32_t) ((width - 1) << 12) | ((uint32_t) (height - + 1) << 24); + local_params[1] = (1UL << (46 - 32)) | (u_offset << (53 - 32)); + local_params[2] = u_offset >> (64 - 53); + local_params[2] |= v_offset << (79 - 64); + local_params[3] |= v_offset >> (96 - 79); + _ipu_write_param_mem(DMAParamAddr(dma_chan), local_params, 4); + + if (ipu_select_buffer(vout->post_proc_ch, IPU_INPUT_BUFFER, 1) < + 0) { + dev_err(vout->video_dev->dev, + "unable to set IPU buffer ready\n"); + } + } else { + u_offset = vout->offset.u_offset; + v_offset = vout->offset.v_offset; + width = vout->v2f.fmt.pix.width / 2; + height = vout->v2f.fmt.pix.height; + local_params[3] = + (uint32_t) ((width - 1) << 12) | ((uint32_t) (height - + 1) << 24); + local_params[1] = (1UL << (46 - 32)) | (u_offset << (53 - 32)); + local_params[2] = u_offset >> (64 - 53); + local_params[2] |= v_offset << (79 - 64); + local_params[3] |= v_offset >> (96 - 79); + _ipu_write_param_mem(DMAParamAddr(dma_chan), local_params, 4); + } + g_pp_in_number++; + + spin_unlock_irqrestore(&g_lock, lock_flags); + + return IRQ_HANDLED; +} + +static irqreturn_t mxc_v4l2out_pp_out_irq_handler(int irq, void *dev_id) +{ + vout_data *vout = dev_id; + int index; + unsigned long timeout; + u32 lock_flags = 0; + + spin_lock_irqsave(&g_lock, lock_flags); + + if (g_pp_out_number % 2 == 1) { + if (ipu_select_buffer(vout->post_proc_ch, IPU_OUTPUT_BUFFER, 1) + < 0) { + dev_err(vout->video_dev->dev, + "unable to set IPU buffer ready\n"); + } + } else { + if (vout->ipu_buf[0] != -1) { + vout->v4l2_bufs[vout->ipu_buf[0]].flags = + V4L2_BUF_FLAG_DONE; + queue_buf(&vout->done_q, vout->ipu_buf[0]); + wake_up_interruptible(&vout->v4l_bufq); + vout->ipu_buf[0] = -1; + } + index = peek_next_buf(&vout->ready_q); + if (vout->state == STATE_STREAM_STOPPING) { + if ((vout->ipu_buf[0] == -1) + && (vout->ipu_buf[1] == -1)) + vout->state = STATE_STREAM_OFF; + } else if ((vout->state == STATE_STREAM_PAUSED) + && (index != -1)) { + /*! + * Setup timer for next buffer, + * when stream has been paused + */ + pr_debug("next index %d\n", index); + + /* if timestamp is 0, then default to 30fps */ + if ((vout->v4l2_bufs[index].timestamp.tv_sec == 0) + && (vout->v4l2_bufs[index].timestamp.tv_usec == 0)) + timeout = + vout->start_jiffies + + vout->frame_count * HZ / 30; + else + timeout = + get_jiffies(&vout->v4l2_bufs[index]. + timestamp); + + if (jiffies >= timeout) { + pr_debug + ("warning: timer timeout" + "already expired.\n"); + } + + vout->state = STATE_STREAM_ON; + + if (mod_timer(&vout->output_timer, timeout)) + pr_debug("warning: timer was already set\n"); + + pr_debug("timer handler next schedule: %lu\n", timeout); + } + } + g_pp_out_number++; + + spin_unlock_irqrestore(&g_lock, lock_flags); + return IRQ_HANDLED; +} + +/*! + * Start the output stream + * + * @param vout structure vout_data * + * + * @return status 0 Success + */ +static int mxc_v4l2out_streamon(vout_data *vout) +{ + struct device *dev = vout->video_dev->dev; + ipu_channel_params_t params; + struct mxcfb_pos fb_pos; + struct fb_var_screeninfo fbvar; + struct fb_info *fbi = + registered_fb[vout->output_fb_num[vout->cur_disp_output]]; + int pp_in_buf[2]; + u16 out_width; + u16 out_height; + ipu_channel_t display_input_ch = MEM_PP_MEM; + bool use_direct_adc = false; + mm_segment_t old_fs; + + if (!vout) + return -EINVAL; + + if (vout->state != STATE_STREAM_OFF) + return -EBUSY; + + if (queue_size(&vout->ready_q) < 2) { + dev_err(dev, "2 buffers not been queued yet!\n"); + return -EINVAL; + } + + out_width = vout->crop_current.width; + out_height = vout->crop_current.height; + + vout->next_done_ipu_buf = vout->next_rdy_ipu_buf = 0; + vout->ipu_buf[0] = pp_in_buf[0] = dequeue_buf(&vout->ready_q); + vout->ipu_buf[1] = pp_in_buf[1] = vout->ipu_buf[0]; + vout->frame_count = 1; + g_pp_out_number = 1; + g_pp_in_number = 1; + + ipu_enable_irq(IPU_IRQ_PP_IN_EOF); + ipu_enable_irq(IPU_IRQ_PP_OUT_EOF); + + /* Init Display Channel */ +#ifdef CONFIG_FB_MXC_ASYNC_PANEL + if (vout->cur_disp_output < DISP3) { + mxcfb_set_refresh_mode(fbi, MXCFB_REFRESH_OFF, 0); + fbi = NULL; + if (ipu_can_rotate_in_place(vout->rotate)) { + dev_dbg(dev, "Using PP direct to ADC channel\n"); + use_direct_adc = true; + vout->display_ch = MEM_PP_ADC; + vout->post_proc_ch = MEM_PP_ADC; + + memset(¶ms, 0, sizeof(params)); + params.mem_pp_adc.in_width = vout->v2f.fmt.pix.width; + params.mem_pp_adc.in_height = vout->v2f.fmt.pix.height; + params.mem_pp_adc.in_pixel_fmt = + vout->v2f.fmt.pix.pixelformat; + params.mem_pp_adc.out_width = out_width; + params.mem_pp_adc.out_height = out_height; + params.mem_pp_adc.out_pixel_fmt = SDC_FG_FB_FORMAT; +#ifdef CONFIG_FB_MXC_EPSON_PANEL + params.mem_pp_adc.out_left = + 2 + vout->crop_current.left; +#else + params.mem_pp_adc.out_left = + 12 + vout->crop_current.left; +#endif + params.mem_pp_adc.out_top = vout->crop_current.top; + if (ipu_init_channel( + vout->post_proc_ch, ¶ms) != 0) { + dev_err(dev, "Error initializing PP chan\n"); + return -EINVAL; + } + + if (ipu_init_channel_buffer(vout->post_proc_ch, + IPU_INPUT_BUFFER, + params.mem_pp_adc. + in_pixel_fmt, + params.mem_pp_adc.in_width, + params.mem_pp_adc.in_height, + vout->v2f.fmt.pix. + bytesperline / + bytes_per_pixel(params. + mem_pp_adc. + in_pixel_fmt), + vout->rotate, + vout-> + v4l2_bufs[pp_in_buf[0]].m. + offset, + vout-> + v4l2_bufs[pp_in_buf[1]].m. + offset, + vout->offset.u_offset, + vout->offset.v_offset) != + 0) { + dev_err(dev, "Error initializing PP in buf\n"); + return -EINVAL; + } + + if (ipu_init_channel_buffer(vout->post_proc_ch, + IPU_OUTPUT_BUFFER, + params.mem_pp_adc. + out_pixel_fmt, out_width, + out_height, out_width, + vout->rotate, 0, 0, 0, + 0) != 0) { + dev_err(dev, + "Error initializing PP" + "output buffer\n"); + return -EINVAL; + } + + } else { + dev_dbg(dev, "Using ADC SYS2 channel\n"); + vout->display_ch = ADC_SYS2; + vout->post_proc_ch = MEM_PP_MEM; + + if (vout->display_bufs[0]) { + mxc_free_buffers(vout->display_bufs, + vout->display_bufs_vaddr, + 2, vout->display_buf_size); + } + + vout->display_buf_size = vout->crop_current.width * + vout->crop_current.height * + fmt_to_bpp(SDC_FG_FB_FORMAT) / 8; + mxc_allocate_buffers(vout->display_bufs, + vout->display_bufs_vaddr, + 2, vout->display_buf_size); + + memset(¶ms, 0, sizeof(params)); + params.adc_sys2.disp = vout->cur_disp_output; + params.adc_sys2.ch_mode = WriteTemplateNonSeq; +#ifdef CONFIG_FB_MXC_EPSON_PANEL + params.adc_sys2.out_left = 2 + vout->crop_current.left; +#else + params.adc_sys2.out_left = 12 + vout->crop_current.left; +#endif + params.adc_sys2.out_top = vout->crop_current.top; + if (ipu_init_channel(ADC_SYS2, ¶ms) < 0) + return -EINVAL; + + if (ipu_init_channel_buffer(vout->display_ch, + IPU_INPUT_BUFFER, + SDC_FG_FB_FORMAT, + out_width, out_height, + out_width, IPU_ROTATE_NONE, + vout->display_bufs[0], + vout->display_bufs[1], 0, + 0) != 0) { + dev_err(dev, + "Error initializing SDC FG buffer\n"); + return -EINVAL; + } + } + } else +#endif + { /* Use SDC */ + dev_dbg(dev, "Using SDC channel\n"); + + fbvar = fbi->var; + if (vout->cur_disp_output == 3) { + vout->display_ch = MEM_FG_SYNC; + fbvar.bits_per_pixel = 16; + fbvar.nonstd = IPU_PIX_FMT_UYVY; + + fbvar.xres = fbvar.xres_virtual = out_width; + fbvar.yres = out_height; + fbvar.yres_virtual = out_height * 2; + } else if (vout->cur_disp_output == 5) { + vout->display_ch = MEM_DC_SYNC; + fbvar.bits_per_pixel = 16; + fbvar.nonstd = IPU_PIX_FMT_UYVY; + + fbvar.xres = fbvar.xres_virtual = out_width; + fbvar.yres = out_height; + fbvar.yres_virtual = out_height * 2; + } else { + vout->display_ch = MEM_BG_SYNC; + } + + fbvar.activate |= FB_ACTIVATE_FORCE; + fb_set_var(fbi, &fbvar); + + fb_pos.x = vout->crop_current.left; + fb_pos.y = vout->crop_current.top; + if (fbi->fbops->fb_ioctl) { + old_fs = get_fs(); + set_fs(KERNEL_DS); + fbi->fbops->fb_ioctl(fbi, MXCFB_SET_OVERLAY_POS, + (unsigned long)&fb_pos); + set_fs(old_fs); + } + + vout->display_bufs[1] = fbi->fix.smem_start; + vout->display_bufs[0] = fbi->fix.smem_start + + (fbi->fix.line_length * fbi->var.yres); + vout->display_buf_size = vout->crop_current.width * + vout->crop_current.height * fbi->var.bits_per_pixel / 8; + + vout->post_proc_ch = MEM_PP_MEM; + } + + /* Init PP */ + if (use_direct_adc == false) { + if (vout->rotate >= IPU_ROTATE_90_RIGHT) { + out_width = vout->crop_current.height; + out_height = vout->crop_current.width; + } + memset(¶ms, 0, sizeof(params)); + params.mem_pp_mem.in_width = vout->v2f.fmt.pix.width / 2; + params.mem_pp_mem.in_height = vout->v2f.fmt.pix.height; + params.mem_pp_mem.in_pixel_fmt = vout->v2f.fmt.pix.pixelformat; + params.mem_pp_mem.out_width = out_width / 2; + params.mem_pp_mem.out_height = out_height; + if (vout->display_ch == ADC_SYS2) + params.mem_pp_mem.out_pixel_fmt = SDC_FG_FB_FORMAT; + else + params.mem_pp_mem.out_pixel_fmt = bpp_to_fmt(fbi); + if (ipu_init_channel(vout->post_proc_ch, ¶ms) != 0) { + dev_err(dev, "Error initializing PP channel\n"); + return -EINVAL; + } + + if (ipu_init_channel_buffer(vout->post_proc_ch, + IPU_INPUT_BUFFER, + params.mem_pp_mem.in_pixel_fmt, + params.mem_pp_mem.in_width, + params.mem_pp_mem.in_height, + vout->v2f.fmt.pix.bytesperline / + bytes_per_pixel(params.mem_pp_mem. + in_pixel_fmt), + IPU_ROTATE_NONE, + vout->v4l2_bufs[pp_in_buf[0]].m. + offset, + vout->v4l2_bufs[pp_in_buf[0]].m. + offset + params.mem_pp_mem.in_width, + vout->offset.u_offset, + vout->offset.v_offset) != 0) { + dev_err(dev, "Error initializing PP input buffer\n"); + return -EINVAL; + } + + if (!ipu_can_rotate_in_place(vout->rotate)) { + if (vout->rot_pp_bufs[0]) { + mxc_free_buffers(vout->rot_pp_bufs, + vout->rot_pp_bufs_vaddr, 2, + vout->display_buf_size); + } + if (mxc_allocate_buffers + (vout->rot_pp_bufs, vout->rot_pp_bufs_vaddr, 2, + vout->display_buf_size) < 0) + return -ENOBUFS; + + if (ipu_init_channel_buffer(vout->post_proc_ch, + IPU_OUTPUT_BUFFER, + params.mem_pp_mem. + out_pixel_fmt, out_width, + out_height, out_width, + IPU_ROTATE_NONE, + vout->rot_pp_bufs[0], + vout->rot_pp_bufs[1], 0, + 0) != 0) { + dev_err(dev, + "Error initializing" + "PP output buffer\n"); + return -EINVAL; + } + + if (ipu_init_channel(MEM_ROT_PP_MEM, NULL) != 0) { + dev_err(dev, + "Error initializing PP ROT channel\n"); + return -EINVAL; + } + + if (ipu_init_channel_buffer(MEM_ROT_PP_MEM, + IPU_INPUT_BUFFER, + params.mem_pp_mem. + out_pixel_fmt, out_width, + out_height, out_width, + vout->rotate, + vout->rot_pp_bufs[0], + vout->rot_pp_bufs[1], 0, + 0) != 0) { + dev_err(dev, + "Error initializing PP ROT" + "input buffer\n"); + return -EINVAL; + } + + /* swap width and height */ + if (vout->rotate >= IPU_ROTATE_90_RIGHT) { + out_width = vout->crop_current.width; + out_height = vout->crop_current.height; + } + + if (ipu_init_channel_buffer(MEM_ROT_PP_MEM, + IPU_OUTPUT_BUFFER, + params.mem_pp_mem. + out_pixel_fmt, out_width, + out_height, out_width, + IPU_ROTATE_NONE, + vout->display_bufs[0], + vout->display_bufs[1], 0, + 0) != 0) { + dev_err(dev, + "Error initializing PP" + "output buffer\n"); + return -EINVAL; + } + + if (ipu_link_channels(vout->post_proc_ch, + MEM_ROT_PP_MEM) < 0) + return -EINVAL; + + ipu_select_buffer(MEM_ROT_PP_MEM, IPU_OUTPUT_BUFFER, 0); + ipu_select_buffer(MEM_ROT_PP_MEM, IPU_OUTPUT_BUFFER, 1); + + ipu_enable_channel(MEM_ROT_PP_MEM); + + display_input_ch = MEM_ROT_PP_MEM; + } else { + if (ipu_init_channel_buffer(vout->post_proc_ch, + IPU_OUTPUT_BUFFER, + params.mem_pp_mem. + out_pixel_fmt, + out_width / 2, + out_height, + out_width, + vout->rotate, + vout->display_bufs[0], + vout->display_bufs[0] + + + out_width / 2 * + bytes_per_pixel + (SDC_FG_FB_FORMAT), 0, + 0) != 0) { + dev_err(dev, + "Error initializing PP" + "output buffer\n"); + return -EINVAL; + } + } + if (ipu_unlink_channels( + display_input_ch, vout->display_ch) < 0) { + dev_err(dev, "Error linking ipu channels\n"); + return -EINVAL; + } + } + + vout->state = STATE_STREAM_PAUSED; + + ipu_select_buffer(vout->post_proc_ch, IPU_INPUT_BUFFER, 0); + + if (use_direct_adc == false) { + ipu_select_buffer(vout->post_proc_ch, IPU_OUTPUT_BUFFER, 0); + ipu_enable_channel(vout->post_proc_ch); + + if (fbi) { + acquire_console_sem(); + fb_blank(fbi, FB_BLANK_UNBLANK); + release_console_sem(); + } else { + ipu_enable_channel(vout->display_ch); + } + } else { + ipu_enable_channel(vout->post_proc_ch); + } + + vout->start_jiffies = jiffies; + dev_dbg(dev, + "streamon: start time = %lu jiffies\n", vout->start_jiffies); + + return 0; +} + +/*! + * Shut down the voutera + * + * @param vout structure vout_data * + * + * @return status 0 Success + */ +static int mxc_v4l2out_streamoff(vout_data *vout) +{ + struct fb_info *fbi = + registered_fb[vout->output_fb_num[vout->cur_disp_output]]; + int i, retval = 0; + unsigned long lockflag = 0; + + if (!vout) + return -EINVAL; + + if (vout->state == STATE_STREAM_OFF) + return 0; + + spin_lock_irqsave(&g_lock, lockflag); + + del_timer(&vout->output_timer); + + if (vout->state == STATE_STREAM_ON) + vout->state = STATE_STREAM_STOPPING; + + ipu_disable_irq(IPU_IRQ_PP_IN_EOF); + ipu_disable_irq(IPU_IRQ_PP_OUT_EOF); + + spin_unlock_irqrestore(&g_lock, lockflag); + + if (vout->post_proc_ch == MEM_PP_MEM) { /* SDC or ADC with Rotation */ + if (!ipu_can_rotate_in_place(vout->rotate)) { + ipu_unlink_channels(MEM_PP_MEM, MEM_ROT_PP_MEM); + ipu_unlink_channels(MEM_ROT_PP_MEM, vout->display_ch); + ipu_disable_channel(MEM_ROT_PP_MEM, true); + + if (vout->rot_pp_bufs[0]) { + mxc_free_buffers(vout->rot_pp_bufs, + vout->rot_pp_bufs_vaddr, 2, + vout->display_buf_size); + } + } else { + ipu_unlink_channels(MEM_PP_MEM, vout->display_ch); + } + ipu_disable_channel(MEM_PP_MEM, true); + + if (vout->display_ch == ADC_SYS2) { + ipu_disable_channel(vout->display_ch, true); + ipu_uninit_channel(vout->display_ch); + } else { + fbi->var.activate |= FB_ACTIVATE_FORCE; + fb_set_var(fbi, &fbi->var); + + if (vout->display_ch == MEM_FG_SYNC) { + acquire_console_sem(); + fb_blank(fbi, FB_BLANK_POWERDOWN); + release_console_sem(); + } + + vout->display_bufs[0] = 0; + vout->display_bufs[1] = 0; + } + + ipu_uninit_channel(MEM_PP_MEM); + if (!ipu_can_rotate_in_place(vout->rotate)) + ipu_uninit_channel(MEM_ROT_PP_MEM); + } else { /* ADC Direct */ + ipu_disable_channel(MEM_PP_ADC, true); + ipu_uninit_channel(MEM_PP_ADC); + } + vout->ready_q.head = vout->ready_q.tail = 0; + vout->done_q.head = vout->done_q.tail = 0; + for (i = 0; i < vout->buffer_cnt; i++) { + vout->v4l2_bufs[i].flags = 0; + vout->v4l2_bufs[i].timestamp.tv_sec = 0; + vout->v4l2_bufs[i].timestamp.tv_usec = 0; + } + + vout->state = STATE_STREAM_OFF; + +#ifdef CONFIG_FB_MXC_ASYNC_PANEL + if (vout->cur_disp_output < DISP3) { + if (vout->display_bufs[0] != 0) { + mxc_free_buffers(vout->display_bufs, + vout->display_bufs_vaddr, 2, + vout->display_buf_size); + } + + mxcfb_set_refresh_mode(registered_fb + [vout-> + output_fb_num[vout->cur_disp_output]], + MXCFB_REFRESH_PARTIAL, 0); + } +#endif + + return retval; +} + +/* + * Valid whether the palette is supported + * + * @param palette V4L2_PIX_FMT_RGB565, V4L2_PIX_FMT_BGR24 or V4L2_PIX_FMT_BGR32 + * + * @return 1 if supported, 0 if failed + */ +static inline int valid_mode(u32 palette) +{ + return ((palette == V4L2_PIX_FMT_RGB565) || + (palette == V4L2_PIX_FMT_BGR24) || + (palette == V4L2_PIX_FMT_RGB24) || + (palette == V4L2_PIX_FMT_BGR32) || + (palette == V4L2_PIX_FMT_RGB32) || + (palette == V4L2_PIX_FMT_NV12) || + (palette == V4L2_PIX_FMT_YUV422P) || + (palette == V4L2_PIX_FMT_YUV420)); +} + +/* + * V4L2 - Handles VIDIOC_G_FMT Ioctl + * + * @param vout structure vout_data * + * + * @param v4l2_format structure v4l2_format * + * + * @return status 0 success, EINVAL failed + */ +static int mxc_v4l2out_g_fmt(vout_data *vout, struct v4l2_format *f) +{ + if (f->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) + return -EINVAL; + *f = vout->v2f; + return 0; +} + +/* + * V4L2 - Handles VIDIOC_S_FMT Ioctl + * + * @param vout structure vout_data * + * + * @param v4l2_format structure v4l2_format * + * + * @return status 0 success, EINVAL failed + */ +static int mxc_v4l2out_s_fmt(vout_data *vout, struct v4l2_format *f) +{ + int retval = 0; + u32 size = 0; + u32 bytesperline; + + if (f->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) { + retval = -EINVAL; + goto err0; + } + if (!valid_mode(f->fmt.pix.pixelformat)) { + dev_err(vout->video_dev->dev, "pixel format not supported\n"); + retval = -EINVAL; + goto err0; + } + + bytesperline = (f->fmt.pix.width * fmt_to_bpp(f->fmt.pix.pixelformat)) / + 8; + if (f->fmt.pix.bytesperline < bytesperline) { + f->fmt.pix.bytesperline = bytesperline; + } else { + bytesperline = f->fmt.pix.bytesperline; + } + + switch (f->fmt.pix.pixelformat) { + case V4L2_PIX_FMT_YUV422P: + /* byteperline for YUV planar formats is for + Y plane only */ + size = bytesperline * f->fmt.pix.height * 2; + break; + case V4L2_PIX_FMT_YUV420: + case V4L2_PIX_FMT_NV12: + size = (bytesperline * f->fmt.pix.height * 3) / 2; + break; + default: + size = bytesperline * f->fmt.pix.height; + break; + } + + /* Return the actual size of the image to the app */ + if (f->fmt.pix.sizeimage < size) + f->fmt.pix.sizeimage = size; + else + size = f->fmt.pix.sizeimage; + + vout->v2f.fmt.pix = f->fmt.pix; + if (vout->v2f.fmt.pix.priv != 0) { + if (copy_from_user(&vout->offset, + (void *)vout->v2f.fmt.pix.priv, + sizeof(vout->offset))) { + retval = -EFAULT; + goto err0; + } + } else { + vout->offset.u_offset = 0; + vout->offset.v_offset = 0; + } + + retval = 0; +err0: + return retval; +} + +/* + * V4L2 - Handles VIDIOC_G_CTRL Ioctl + * + * @param vout structure vout_data * + * + * @param c structure v4l2_control * + * + * @return status 0 success, EINVAL failed + */ +static int mxc_get_v42lout_control(vout_data *vout, struct v4l2_control *c) +{ + switch (c->id) { + case V4L2_CID_HFLIP: + return (vout->rotate & IPU_ROTATE_HORIZ_FLIP) ? 1 : 0; + case V4L2_CID_VFLIP: + return (vout->rotate & IPU_ROTATE_VERT_FLIP) ? 1 : 0; + case (V4L2_CID_PRIVATE_BASE + 1): + return vout->rotate; + default: + return -EINVAL; + } +} + +/* + * V4L2 - Handles VIDIOC_S_CTRL Ioctl + * + * @param vout structure vout_data * + * + * @param c structure v4l2_control * + * + * @return status 0 success, EINVAL failed + */ +static int mxc_set_v42lout_control(vout_data *vout, struct v4l2_control *c) +{ + switch (c->id) { + case V4L2_CID_HFLIP: + vout->rotate |= c->value ? IPU_ROTATE_HORIZ_FLIP : + IPU_ROTATE_NONE; + break; + case V4L2_CID_VFLIP: + vout->rotate |= c->value ? IPU_ROTATE_VERT_FLIP : + IPU_ROTATE_NONE; + break; + case V4L2_CID_MXC_ROT: + vout->rotate = c->value; + break; + default: + return -EINVAL; + } + return 0; +} + +/*! + * V4L2 interface - open function + * + * @param inode structure inode * + * + * @param file structure file * + * + * @return status 0 success, ENODEV invalid device instance, + * ENODEV timeout, ERESTARTSYS interrupted by user + */ +static int mxc_v4l2out_open(struct inode *inode, struct file *file) +{ + struct video_device *dev = video_devdata(file); + vout_data *vout = video_get_drvdata(dev); + int err; + + if (!vout) + return -ENODEV; + + down(&vout->busy_lock); + + err = -EINTR; + if (signal_pending(current)) + goto oops; + + if (vout->open_count++ == 0) { + ipu_request_irq(IPU_IRQ_PP_IN_EOF, + mxc_v4l2out_pp_in_irq_handler, + 0, dev->name, vout); + ipu_request_irq(IPU_IRQ_PP_OUT_EOF, + mxc_v4l2out_pp_out_irq_handler, + 0, dev->name, vout); + + init_waitqueue_head(&vout->v4l_bufq); + + init_timer(&vout->output_timer); + vout->output_timer.function = mxc_v4l2out_timer_handler; + vout->output_timer.data = (unsigned long)vout; + + vout->state = STATE_STREAM_OFF; + vout->rotate = IPU_ROTATE_NONE; + g_irq_cnt = g_buf_output_cnt = g_buf_q_cnt = g_buf_dq_cnt = 0; + + } + + file->private_data = dev; + + up(&vout->busy_lock); + + return 0; + +oops: + up(&vout->busy_lock); + return err; +} + +/*! + * V4L2 interface - close function + * + * @param inode struct inode * + * + * @param file struct file * + * + * @return 0 success + */ +static int mxc_v4l2out_close(struct inode *inode, struct file *file) +{ + struct video_device *dev = video_devdata(file); + vout_data *vout = video_get_drvdata(dev); + + if (--vout->open_count == 0) { + if (vout->state != STATE_STREAM_OFF) + mxc_v4l2out_streamoff(vout); + + ipu_free_irq(IPU_IRQ_PP_IN_EOF, vout); + ipu_free_irq(IPU_IRQ_PP_OUT_EOF, vout); + + file->private_data = NULL; + + mxc_free_buffers(vout->queue_buf_paddr, vout->queue_buf_vaddr, + vout->buffer_cnt, vout->queue_buf_size); + vout->buffer_cnt = 0; + mxc_free_buffers(vout->rot_pp_bufs, vout->rot_pp_bufs_vaddr, 2, + vout->display_buf_size); + + /* capture off */ + wake_up_interruptible(&vout->v4l_bufq); + } + + return 0; +} + +/*! + * V4L2 interface - ioctl function + * + * @param inode struct inode * + * + * @param file struct file * + * + * @param ioctlnr unsigned int + * + * @param arg void * + * + * @return 0 success, ENODEV for invalid device instance, + * -1 for other errors. + */ +static int +mxc_v4l2out_do_ioctl(struct inode *inode, struct file *file, + unsigned int ioctlnr, void *arg) +{ + struct video_device *vdev = file->private_data; + vout_data *vout = video_get_drvdata(vdev); + int retval = 0; + int i = 0; + + if (!vout) + return -EBADF; + + /* make this _really_ smp-safe */ + if (down_interruptible(&vout->busy_lock)) + return -EBUSY; + + switch (ioctlnr) { + case VIDIOC_QUERYCAP: + { + struct v4l2_capability *cap = arg; + strcpy(cap->driver, "mxc_v4l2_output"); + cap->version = 0; + cap->capabilities = + V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING; + cap->card[0] = '\0'; + cap->bus_info[0] = '\0'; + retval = 0; + break; + } + case VIDIOC_G_FMT: + { + struct v4l2_format *gf = arg; + retval = mxc_v4l2out_g_fmt(vout, gf); + break; + } + case VIDIOC_S_FMT: + { + struct v4l2_format *sf = arg; + if (vout->state != STATE_STREAM_OFF) { + retval = -EBUSY; + break; + } + retval = mxc_v4l2out_s_fmt(vout, sf); + break; + } + case VIDIOC_REQBUFS: + { + struct v4l2_requestbuffers *req = arg; + if ((req->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) || + (req->memory != V4L2_MEMORY_MMAP)) { + dev_dbg(vdev->dev, + "VIDIOC_REQBUFS: incorrect" + "buffer type\n"); + retval = -EINVAL; + break; + } + + if (req->count == 0) + mxc_v4l2out_streamoff(vout); + + if (vout->state == STATE_STREAM_OFF) { + if (vout->queue_buf_paddr[0] != 0) { + mxc_free_buffers(vout->queue_buf_paddr, + vout->queue_buf_vaddr, + vout->buffer_cnt, + vout->queue_buf_size); + dev_dbg(vdev->dev, + "VIDIOC_REQBUFS:" + "freed buffers\n"); + } + vout->buffer_cnt = 0; + } else { + dev_dbg(vdev->dev, + "VIDIOC_REQBUFS: Buffer is in use\n"); + retval = -EBUSY; + break; + } + + if (req->count == 0) + break; + + if (req->count < MIN_FRAME_NUM) + req->count = MIN_FRAME_NUM; + else if (req->count > MAX_FRAME_NUM) + req->count = MAX_FRAME_NUM; + vout->buffer_cnt = req->count; + vout->queue_buf_size = + PAGE_ALIGN(vout->v2f.fmt.pix.sizeimage); + + retval = mxc_allocate_buffers(vout->queue_buf_paddr, + vout->queue_buf_vaddr, + vout->buffer_cnt, + vout->queue_buf_size); + if (retval < 0) + break; + + /* Init buffer queues */ + vout->done_q.head = 0; + vout->done_q.tail = 0; + vout->ready_q.head = 0; + vout->ready_q.tail = 0; + + for (i = 0; i < vout->buffer_cnt; i++) { + memset(&(vout->v4l2_bufs[i]), 0, + sizeof(vout->v4l2_bufs[i])); + vout->v4l2_bufs[i].flags = 0; + vout->v4l2_bufs[i].memory = V4L2_MEMORY_MMAP; + vout->v4l2_bufs[i].index = i; + vout->v4l2_bufs[i].type = + V4L2_BUF_TYPE_VIDEO_OUTPUT; + vout->v4l2_bufs[i].length = + PAGE_ALIGN(vout->v2f.fmt.pix.sizeimage); + vout->v4l2_bufs[i].m.offset = + (unsigned long)vout->queue_buf_paddr[i]; + vout->v4l2_bufs[i].timestamp.tv_sec = 0; + vout->v4l2_bufs[i].timestamp.tv_usec = 0; + } + break; + } + case VIDIOC_QUERYBUF: + { + struct v4l2_buffer *buf = arg; + u32 type = buf->type; + int index = buf->index; + + if ((type != V4L2_BUF_TYPE_VIDEO_OUTPUT) || + (index >= vout->buffer_cnt)) { + dev_dbg(vdev->dev, + "VIDIOC_QUERYBUFS: incorrect" + "buffer type\n"); + retval = -EINVAL; + break; + } + down(&vout->param_lock); + memcpy(buf, &(vout->v4l2_bufs[index]), sizeof(*buf)); + up(&vout->param_lock); + break; + } + case VIDIOC_QBUF: + { + struct v4l2_buffer *buf = arg; + int index = buf->index; + unsigned long lock_flags; + + if ((buf->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) || + (index >= vout->buffer_cnt)) { + retval = -EINVAL; + break; + } + + dev_dbg(vdev->dev, "VIDIOC_QBUF: %d\n", buf->index); + + /* mmapped buffers are L1 WB cached, + * so we need to clean them */ + if (buf->flags & V4L2_BUF_FLAG_MAPPED) + flush_cache_all(); + + spin_lock_irqsave(&g_lock, lock_flags); + + memcpy(&(vout->v4l2_bufs[index]), buf, sizeof(*buf)); + vout->v4l2_bufs[index].flags |= V4L2_BUF_FLAG_QUEUED; + + g_buf_q_cnt++; + queue_buf(&vout->ready_q, index); + if (vout->state == STATE_STREAM_PAUSED) { + unsigned long timeout; + + index = peek_next_buf(&vout->ready_q); + + /* if timestamp is 0, then default to 30fps */ + if ((vout->v4l2_bufs[index].timestamp.tv_sec == + 0) + && (vout->v4l2_bufs[index].timestamp. + tv_usec == 0)) + timeout = + vout->start_jiffies + + vout->frame_count * HZ / 30; + else + timeout = + get_jiffies(&vout->v4l2_bufs[index]. + timestamp); + + if (jiffies >= timeout) { + dev_dbg(vout->video_dev->dev, + "warning: timer timeout" + "already expired.\n"); + } + vout->output_timer.expires = timeout; + dev_dbg(vdev->dev, + "QBUF: frame #%u timeout @" + " %lu jiffies, current = %lu\n", + vout->frame_count, timeout, jiffies); + add_timer(&vout->output_timer); + vout->state = STATE_STREAM_ON; + } + + spin_unlock_irqrestore(&g_lock, lock_flags); + break; + } + case VIDIOC_DQBUF: + { + struct v4l2_buffer *buf = arg; + int idx; + + if ((queue_size(&vout->done_q) == 0) && + (file->f_flags & O_NONBLOCK)) { + retval = -EAGAIN; + break; + } + + if (!wait_event_interruptible_timeout(vout->v4l_bufq, + queue_size(&vout-> + done_q) + != 0, 10 * HZ)) { + dev_dbg(vdev->dev, "VIDIOC_DQBUF: timeout\n"); + retval = -ETIME; + break; + } else if (signal_pending(current)) { + dev_dbg(vdev->dev, + "VIDIOC_DQBUF: interrupt received\n"); + retval = -ERESTARTSYS; + break; + } + idx = dequeue_buf(&vout->done_q); + if (idx == -1) { /* No frame free */ + dev_dbg(vdev->dev, + "VIDIOC_DQBUF: no free buffers\n"); + retval = -EAGAIN; + break; + } + if ((vout->v4l2_bufs[idx].flags & V4L2_BUF_FLAG_DONE) == + 0) + dev_dbg(vdev->dev, + "VIDIOC_DQBUF: buffer in done q, " + "but not flagged as done\n"); + + vout->v4l2_bufs[idx].flags = 0; + memcpy(buf, &(vout->v4l2_bufs[idx]), sizeof(*buf)); + dev_dbg(vdev->dev, "VIDIOC_DQBUF: %d\n", buf->index); + break; + } + case VIDIOC_STREAMON: + { + retval = mxc_v4l2out_streamon(vout); + break; + } + case VIDIOC_STREAMOFF: + { + retval = mxc_v4l2out_streamoff(vout); + break; + } + case VIDIOC_G_CTRL: + { + retval = mxc_get_v42lout_control(vout, arg); + break; + } + case VIDIOC_S_CTRL: + { + retval = mxc_set_v42lout_control(vout, arg); + break; + } + case VIDIOC_CROPCAP: + { + struct v4l2_cropcap *cap = arg; + + if (cap->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) { + retval = -EINVAL; + break; + } + + cap->bounds = vout->crop_bounds[vout->cur_disp_output]; + cap->defrect = vout->crop_bounds[vout->cur_disp_output]; + retval = 0; + break; + } + case VIDIOC_G_CROP: + { + struct v4l2_crop *crop = arg; + + if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) { + retval = -EINVAL; + break; + } + crop->c = vout->crop_current; + break; + } + case VIDIOC_S_CROP: + { + struct v4l2_crop *crop = arg; + struct v4l2_rect *b = + &(vout->crop_bounds[vout->cur_disp_output]); + + if (crop->type != V4L2_BUF_TYPE_VIDEO_OUTPUT) { + retval = -EINVAL; + break; + } + if (crop->c.height < 0) { + retval = -EINVAL; + break; + } + if (crop->c.width < 0) { + retval = -EINVAL; + break; + } + + /* only full screen supported for SDC BG */ + if (vout->cur_disp_output == 4) { + crop->c = vout->crop_current; + break; + } + + if (crop->c.top < b->top) + crop->c.top = b->top; + if (crop->c.top >= b->top + b->height) + crop->c.top = b->top + b->height - 1; + if (crop->c.height > b->top - crop->c.top + b->height) + crop->c.height = + b->top - crop->c.top + b->height; + + if (crop->c.left < b->left) + crop->c.left = b->left; + if (crop->c.left >= b->left + b->width) + crop->c.left = b->left + b->width - 1; + if (crop->c.width > b->left - crop->c.left + b->width) + crop->c.width = + b->left - crop->c.left + b->width; + + /* stride line limitation */ + crop->c.height -= crop->c.height % 8; + crop->c.width -= crop->c.width % 8; + + vout->crop_current = crop->c; + break; + } + case VIDIOC_ENUMOUTPUT: + { + struct v4l2_output *output = arg; + + if ((output->index >= 5) || + (vout->output_enabled[output->index] == false)) { + retval = -EINVAL; + break; + } + + if (output->index < 3) { + *output = mxc_outputs[MXC_V4L2_OUT_2_ADC]; + output->name[4] = '0' + output->index; + } else { + *output = mxc_outputs[MXC_V4L2_OUT_2_SDC]; + } + break; + } + case VIDIOC_G_OUTPUT: + { + int *p_output_num = arg; + + *p_output_num = vout->cur_disp_output; + break; + } + case VIDIOC_S_OUTPUT: + { + int *p_output_num = arg; + int fbnum; + struct v4l2_rect *b; + + if ((*p_output_num >= MXC_V4L2_OUT_NUM_OUTPUTS) || + (vout->output_enabled[*p_output_num] == false)) { + retval = -EINVAL; + break; + } + + if (vout->state != STATE_STREAM_OFF) { + retval = -EBUSY; + break; + } + + vout->cur_disp_output = *p_output_num; + + /* Update bounds in case they have changed */ + b = &vout->crop_bounds[vout->cur_disp_output]; + + fbnum = vout->output_fb_num[vout->cur_disp_output]; + if (vout->cur_disp_output == 3) + fbnum = vout->output_fb_num[4]; + + b->width = registered_fb[fbnum]->var.xres; + b->height = registered_fb[fbnum]->var.yres; + + vout->crop_current = *b; + break; + } + case VIDIOC_ENUM_FMT: + case VIDIOC_TRY_FMT: + case VIDIOC_QUERYCTRL: + case VIDIOC_G_PARM: + case VIDIOC_ENUMSTD: + case VIDIOC_G_STD: + case VIDIOC_S_STD: + case VIDIOC_G_TUNER: + case VIDIOC_S_TUNER: + case VIDIOC_G_FREQUENCY: + case VIDIOC_S_FREQUENCY: + default: + retval = -EINVAL; + break; + } + + up(&vout->busy_lock); + return retval; +} + +/* + * V4L2 interface - ioctl function + * + * @return None + */ +static int +mxc_v4l2out_ioctl(struct inode *inode, struct file *file, + unsigned int cmd, unsigned long arg) +{ + return video_usercopy(inode, file, cmd, arg, mxc_v4l2out_do_ioctl); +} + +/*! + * V4L2 interface - mmap function + * + * @param file structure file * + * + * @param vma structure vm_area_struct * + * + * @return status 0 Success, EINTR busy lock error, + * ENOBUFS remap_page error + */ +static int mxc_v4l2out_mmap(struct file *file, struct vm_area_struct *vma) +{ + struct video_device *vdev = video_devdata(file); + unsigned long size = vma->vm_end - vma->vm_start; + int res = 0; + int i; + vout_data *vout = video_get_drvdata(vdev); + + dev_dbg(vdev->dev, "pgoff=0x%lx, start=0x%lx, end=0x%lx\n", + vma->vm_pgoff, vma->vm_start, vma->vm_end); + + /* make this _really_ smp-safe */ + if (down_interruptible(&vout->busy_lock)) + return -EINTR; + + for (i = 0; i < vout->buffer_cnt; i++) { + if ((vout->v4l2_bufs[i].m.offset == + (vma->vm_pgoff << PAGE_SHIFT)) && + (vout->v4l2_bufs[i].length >= size)) { + vout->v4l2_bufs[i].flags |= V4L2_BUF_FLAG_MAPPED; + break; + } + } + if (i == vout->buffer_cnt) { + res = -ENOBUFS; + goto mxc_mmap_exit; + } + + /* make buffers inner write-back, outer write-thru cacheable */ + vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); + + if (remap_pfn_range(vma, vma->vm_start, + vma->vm_pgoff, size, vma->vm_page_prot)) { + dev_dbg(vdev->dev, "mmap remap_pfn_range failed\n"); + res = -ENOBUFS; + goto mxc_mmap_exit; + } + + vma->vm_flags &= ~VM_IO; /* using shared anonymous pages */ + +mxc_mmap_exit: + up(&vout->busy_lock); + return res; +} + +/*! + * V4L2 interface - poll function + * + * @param file structure file * + * + * @param wait structure poll_table * + * + * @return status POLLIN | POLLRDNORM + */ +static unsigned int mxc_v4l2out_poll(struct file *file, poll_table * wait) +{ + struct video_device *dev = video_devdata(file); + vout_data *vout = video_get_drvdata(dev); + + wait_queue_head_t *queue = NULL; + int res = POLLIN | POLLRDNORM; + + if (down_interruptible(&vout->busy_lock)) + return -EINTR; + + queue = &vout->v4l_bufq; + poll_wait(file, queue, wait); + + up(&vout->busy_lock); + return res; +} + +static struct +file_operations mxc_v4l2out_fops = { + .owner = THIS_MODULE, + .open = mxc_v4l2out_open, + .release = mxc_v4l2out_close, + .ioctl = mxc_v4l2out_ioctl, + .mmap = mxc_v4l2out_mmap, + .poll = mxc_v4l2out_poll, +}; + +static struct video_device mxc_v4l2out_template = { + .owner = THIS_MODULE, + .name = "MXC Video Output", + .type = 0, + .type2 = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING, + .fops = &mxc_v4l2out_fops, + .release = video_device_release, +}; + +/*! + * Probe routine for the framebuffer driver. It is called during the + * driver binding process. The following functions are performed in + * this routine: Framebuffer initialization, Memory allocation and + * mapping, Framebuffer registration, IPU initialization. + * + * @return Appropriate error code to the kernel common code + */ +static int mxc_v4l2out_probe(struct platform_device *pdev) +{ + int i; + vout_data *vout; + + /* + * Allocate sufficient memory for the fb structure + */ + g_vout = vout = kmalloc(sizeof(vout_data), GFP_KERNEL); + + if (!vout) + return 0; + + memset(vout, 0, sizeof(vout_data)); + + vout->video_dev = video_device_alloc(); + if (vout->video_dev == NULL) + return -1; + vout->video_dev->dev = &pdev->dev; + vout->video_dev->minor = -1; + + *(vout->video_dev) = mxc_v4l2out_template; + + /* register v4l device */ + if (video_register_device(vout->video_dev, + VFL_TYPE_GRABBER, video_nr) == -1) { + dev_dbg(&pdev->dev, "video_register_device failed\n"); + return 0; + } + dev_info(&pdev->dev, "Registered device video%d\n", + vout->video_dev->minor & 0x1f); + vout->video_dev->dev = &pdev->dev; + + video_set_drvdata(vout->video_dev, vout); + + init_MUTEX(&vout->param_lock); + init_MUTEX(&vout->busy_lock); + + /* setup outputs and cropping */ + vout->cur_disp_output = -1; + for (i = 0; i < num_registered_fb; i++) { + char *idstr = registered_fb[i]->fix.id; + if (strncmp(idstr, "DISP", 4) == 0) { + int disp_num = idstr[4] - '0'; + if (disp_num == 3) { + if (strcmp(idstr, "DISP3 BG - DI1") == 0) + disp_num = 5; + else if (strncmp(idstr, "DISP3 BG", 8) == 0) + disp_num = 4; + } + vout->crop_bounds[disp_num].left = 0; + vout->crop_bounds[disp_num].top = 0; + vout->crop_bounds[disp_num].width = + registered_fb[i]->var.xres; + vout->crop_bounds[disp_num].height = + registered_fb[i]->var.yres; + vout->output_enabled[disp_num] = true; + vout->output_fb_num[disp_num] = i; + if (vout->cur_disp_output == -1) + vout->cur_disp_output = disp_num; + } + + } + vout->crop_current = vout->crop_bounds[vout->cur_disp_output]; + + platform_set_drvdata(pdev, vout); + + return 0; +} + +static int mxc_v4l2out_remove(struct platform_device *pdev) +{ + vout_data *vout = platform_get_drvdata(pdev); + + if (vout->video_dev) { + if (-1 != vout->video_dev->minor) + video_unregister_device(vout->video_dev); + else + video_device_release(vout->video_dev); + vout->video_dev = NULL; + } + + platform_set_drvdata(pdev, NULL); + + kfree(vout); + + return 0; +} + +/*! + * This structure contains pointers to the power management callback functions. + */ +static struct platform_driver mxc_v4l2out_driver = { + .driver = { + .name = "MXC Video Output", + }, + .probe = mxc_v4l2out_probe, + .remove = mxc_v4l2out_remove, +}; + +static struct platform_device mxc_v4l2out_device = { + .name = "MXC Video Output", + .id = 0, +}; + +/*! + * mxc v4l2 init function + * + */ +static int mxc_v4l2out_init(void) +{ + u8 err = 0; + + err = platform_driver_register(&mxc_v4l2out_driver); + if (err == 0) + platform_device_register(&mxc_v4l2out_device); + return err; +} + +/*! + * mxc v4l2 cleanup function + * + */ +static void mxc_v4l2out_clean(void) +{ + video_unregister_device(g_vout->video_dev); + + platform_driver_unregister(&mxc_v4l2out_driver); + platform_device_unregister(&mxc_v4l2out_device); + kfree(g_vout); + g_vout = NULL; +} + +module_init(mxc_v4l2out_init); +module_exit(mxc_v4l2out_clean); + +module_param(video_nr, int, 0444); +MODULE_AUTHOR("Freescale Semiconductor, Inc."); +MODULE_DESCRIPTION("V4L2-driver for MXC video output"); +MODULE_LICENSE("GPL"); +MODULE_SUPPORTED_DEVICE("video"); |