// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2010 Texas Instruments Incorporated - https://www.ti.com/
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/errno.h>
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#include <linux/interrupt.h>
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#include <linux/string.h>
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#include <linux/wait.h>
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#include <linux/time.h>
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#include <linux/platform_device.h>
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#include <linux/irq.h>
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#include <linux/mm.h>
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#include <linux/mutex.h>
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#include <linux/videodev2.h>
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#include <linux/slab.h>
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#include <media/v4l2-dev.h>
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#include <media/v4l2-common.h>
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#include <media/v4l2-ioctl.h>
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#include <media/v4l2-device.h>
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#include <media/davinci/vpbe_display.h>
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#include <media/davinci/vpbe_types.h>
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#include <media/davinci/vpbe.h>
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#include <media/davinci/vpbe_venc.h>
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#include <media/davinci/vpbe_osd.h>
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#include "vpbe_venc_regs.h"
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#define VPBE_DISPLAY_DRIVER "vpbe-v4l2"
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static int debug;
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#define VPBE_DEFAULT_NUM_BUFS 3
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module_param(debug, int, 0644);
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static int vpbe_set_osd_display_params(struct vpbe_display *disp_dev,
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struct vpbe_layer *layer);
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static int venc_is_second_field(struct vpbe_display *disp_dev)
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{
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struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
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int ret, val;
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ret = v4l2_subdev_call(vpbe_dev->venc,
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core,
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ioctl,
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VENC_GET_FLD,
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&val);
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if (ret < 0) {
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v4l2_err(&vpbe_dev->v4l2_dev,
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"Error in getting Field ID 0\n");
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return 1;
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}
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return val;
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}
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static void vpbe_isr_even_field(struct vpbe_display *disp_obj,
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struct vpbe_layer *layer)
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{
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if (layer->cur_frm == layer->next_frm)
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return;
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layer->cur_frm->vb.vb2_buf.timestamp = ktime_get_ns();
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vb2_buffer_done(&layer->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE);
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/* Make cur_frm pointing to next_frm */
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layer->cur_frm = layer->next_frm;
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}
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static void vpbe_isr_odd_field(struct vpbe_display *disp_obj,
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struct vpbe_layer *layer)
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{
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struct osd_state *osd_device = disp_obj->osd_device;
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unsigned long addr;
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spin_lock(&disp_obj->dma_queue_lock);
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if (list_empty(&layer->dma_queue) ||
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(layer->cur_frm != layer->next_frm)) {
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spin_unlock(&disp_obj->dma_queue_lock);
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return;
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}
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/*
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* one field is displayed configure
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* the next frame if it is available
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* otherwise hold on current frame
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* Get next from the buffer queue
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*/
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layer->next_frm = list_entry(layer->dma_queue.next,
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struct vpbe_disp_buffer, list);
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/* Remove that from the buffer queue */
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list_del(&layer->next_frm->list);
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spin_unlock(&disp_obj->dma_queue_lock);
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/* Mark state of the frame to active */
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layer->next_frm->vb.vb2_buf.state = VB2_BUF_STATE_ACTIVE;
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addr = vb2_dma_contig_plane_dma_addr(&layer->next_frm->vb.vb2_buf, 0);
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osd_device->ops.start_layer(osd_device,
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layer->layer_info.id,
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addr,
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disp_obj->cbcr_ofst);
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}
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/* interrupt service routine */
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static irqreturn_t venc_isr(int irq, void *arg)
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{
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struct vpbe_display *disp_dev = (struct vpbe_display *)arg;
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struct vpbe_layer *layer;
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static unsigned last_event;
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unsigned event = 0;
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int fid;
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int i;
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if (!arg || !disp_dev->dev[0])
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return IRQ_HANDLED;
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if (venc_is_second_field(disp_dev))
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event |= VENC_SECOND_FIELD;
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else
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event |= VENC_FIRST_FIELD;
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if (event == (last_event & ~VENC_END_OF_FRAME)) {
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/*
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* If the display is non-interlaced, then we need to flag the
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* end-of-frame event at every interrupt regardless of the
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* value of the FIDST bit. We can conclude that the display is
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* non-interlaced if the value of the FIDST bit is unchanged
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* from the previous interrupt.
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*/
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event |= VENC_END_OF_FRAME;
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} else if (event == VENC_SECOND_FIELD) {
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/* end-of-frame for interlaced display */
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event |= VENC_END_OF_FRAME;
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}
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last_event = event;
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for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
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layer = disp_dev->dev[i];
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if (!vb2_start_streaming_called(&layer->buffer_queue))
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continue;
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if (layer->layer_first_int) {
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layer->layer_first_int = 0;
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continue;
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}
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/* Check the field format */
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if ((V4L2_FIELD_NONE == layer->pix_fmt.field) &&
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(event & VENC_END_OF_FRAME)) {
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/* Progressive mode */
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vpbe_isr_even_field(disp_dev, layer);
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vpbe_isr_odd_field(disp_dev, layer);
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} else {
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/* Interlaced mode */
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layer->field_id ^= 1;
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if (event & VENC_FIRST_FIELD)
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fid = 0;
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else
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fid = 1;
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/*
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* If field id does not match with store
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* field id
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*/
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if (fid != layer->field_id) {
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/* Make them in sync */
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layer->field_id = fid;
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continue;
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}
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/*
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* device field id and local field id are
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* in sync. If this is even field
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*/
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if (0 == fid)
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vpbe_isr_even_field(disp_dev, layer);
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else /* odd field */
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vpbe_isr_odd_field(disp_dev, layer);
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}
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}
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return IRQ_HANDLED;
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}
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/*
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* vpbe_buffer_prepare()
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* This is the callback function called from vb2_qbuf() function
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* the buffer is prepared and user space virtual address is converted into
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* physical address
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*/
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static int vpbe_buffer_prepare(struct vb2_buffer *vb)
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{
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struct vb2_queue *q = vb->vb2_queue;
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struct vpbe_layer *layer = vb2_get_drv_priv(q);
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struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
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unsigned long addr;
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v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
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"vpbe_buffer_prepare\n");
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vb2_set_plane_payload(vb, 0, layer->pix_fmt.sizeimage);
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if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
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return -EINVAL;
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addr = vb2_dma_contig_plane_dma_addr(vb, 0);
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if (!IS_ALIGNED(addr, 8)) {
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v4l2_err(&vpbe_dev->v4l2_dev,
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"buffer_prepare:offset is not aligned to 32 bytes\n");
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return -EINVAL;
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}
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return 0;
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}
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/*
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* vpbe_buffer_setup()
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* This function allocates memory for the buffers
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*/
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static int
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vpbe_buffer_queue_setup(struct vb2_queue *vq,
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unsigned int *nbuffers, unsigned int *nplanes,
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unsigned int sizes[], struct device *alloc_devs[])
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{
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/* Get the file handle object and layer object */
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struct vpbe_layer *layer = vb2_get_drv_priv(vq);
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struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
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v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_buffer_setup\n");
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/* Store number of buffers allocated in numbuffer member */
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if (vq->num_buffers + *nbuffers < VPBE_DEFAULT_NUM_BUFS)
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*nbuffers = VPBE_DEFAULT_NUM_BUFS - vq->num_buffers;
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if (*nplanes)
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return sizes[0] < layer->pix_fmt.sizeimage ? -EINVAL : 0;
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*nplanes = 1;
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sizes[0] = layer->pix_fmt.sizeimage;
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return 0;
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}
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/*
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* vpbe_buffer_queue()
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* This function adds the buffer to DMA queue
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*/
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static void vpbe_buffer_queue(struct vb2_buffer *vb)
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{
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struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
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/* Get the file handle object and layer object */
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struct vpbe_disp_buffer *buf = container_of(vbuf,
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struct vpbe_disp_buffer, vb);
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struct vpbe_layer *layer = vb2_get_drv_priv(vb->vb2_queue);
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struct vpbe_display *disp = layer->disp_dev;
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struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
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unsigned long flags;
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v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
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"vpbe_buffer_queue\n");
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/* add the buffer to the DMA queue */
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spin_lock_irqsave(&disp->dma_queue_lock, flags);
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list_add_tail(&buf->list, &layer->dma_queue);
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spin_unlock_irqrestore(&disp->dma_queue_lock, flags);
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}
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static int vpbe_start_streaming(struct vb2_queue *vq, unsigned int count)
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{
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struct vpbe_layer *layer = vb2_get_drv_priv(vq);
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struct osd_state *osd_device = layer->disp_dev->osd_device;
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int ret;
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osd_device->ops.disable_layer(osd_device, layer->layer_info.id);
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/* Get the next frame from the buffer queue */
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layer->next_frm = layer->cur_frm = list_entry(layer->dma_queue.next,
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struct vpbe_disp_buffer, list);
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/* Remove buffer from the buffer queue */
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list_del(&layer->cur_frm->list);
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/* Mark state of the current frame to active */
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layer->cur_frm->vb.vb2_buf.state = VB2_BUF_STATE_ACTIVE;
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/* Initialize field_id and started member */
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layer->field_id = 0;
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/* Set parameters in OSD and VENC */
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ret = vpbe_set_osd_display_params(layer->disp_dev, layer);
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if (ret < 0) {
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struct vpbe_disp_buffer *buf, *tmp;
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vb2_buffer_done(&layer->cur_frm->vb.vb2_buf,
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VB2_BUF_STATE_QUEUED);
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list_for_each_entry_safe(buf, tmp, &layer->dma_queue, list) {
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list_del(&buf->list);
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vb2_buffer_done(&buf->vb.vb2_buf,
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VB2_BUF_STATE_QUEUED);
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}
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return ret;
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}
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/*
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* if request format is yuv420 semiplanar, need to
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* enable both video windows
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*/
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layer->layer_first_int = 1;
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return ret;
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}
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static void vpbe_stop_streaming(struct vb2_queue *vq)
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{
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struct vpbe_layer *layer = vb2_get_drv_priv(vq);
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struct osd_state *osd_device = layer->disp_dev->osd_device;
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struct vpbe_display *disp = layer->disp_dev;
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unsigned long flags;
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if (!vb2_is_streaming(vq))
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return;
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osd_device->ops.disable_layer(osd_device, layer->layer_info.id);
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/* release all active buffers */
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spin_lock_irqsave(&disp->dma_queue_lock, flags);
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if (layer->cur_frm == layer->next_frm) {
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vb2_buffer_done(&layer->cur_frm->vb.vb2_buf,
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VB2_BUF_STATE_ERROR);
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} else {
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if (layer->cur_frm)
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vb2_buffer_done(&layer->cur_frm->vb.vb2_buf,
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VB2_BUF_STATE_ERROR);
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if (layer->next_frm)
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vb2_buffer_done(&layer->next_frm->vb.vb2_buf,
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VB2_BUF_STATE_ERROR);
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}
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while (!list_empty(&layer->dma_queue)) {
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layer->next_frm = list_entry(layer->dma_queue.next,
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struct vpbe_disp_buffer, list);
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list_del(&layer->next_frm->list);
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vb2_buffer_done(&layer->next_frm->vb.vb2_buf,
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VB2_BUF_STATE_ERROR);
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}
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spin_unlock_irqrestore(&disp->dma_queue_lock, flags);
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}
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static const struct vb2_ops video_qops = {
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.queue_setup = vpbe_buffer_queue_setup,
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.wait_prepare = vb2_ops_wait_prepare,
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.wait_finish = vb2_ops_wait_finish,
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.buf_prepare = vpbe_buffer_prepare,
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.start_streaming = vpbe_start_streaming,
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.stop_streaming = vpbe_stop_streaming,
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.buf_queue = vpbe_buffer_queue,
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};
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static
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struct vpbe_layer*
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_vpbe_display_get_other_win_layer(struct vpbe_display *disp_dev,
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struct vpbe_layer *layer)
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{
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enum vpbe_display_device_id thiswin, otherwin;
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thiswin = layer->device_id;
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otherwin = (thiswin == VPBE_DISPLAY_DEVICE_0) ?
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VPBE_DISPLAY_DEVICE_1 : VPBE_DISPLAY_DEVICE_0;
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return disp_dev->dev[otherwin];
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}
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static int vpbe_set_osd_display_params(struct vpbe_display *disp_dev,
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struct vpbe_layer *layer)
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{
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struct osd_layer_config *cfg = &layer->layer_info.config;
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struct osd_state *osd_device = disp_dev->osd_device;
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struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
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unsigned long addr;
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int ret;
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addr = vb2_dma_contig_plane_dma_addr(&layer->cur_frm->vb.vb2_buf, 0);
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/* Set address in the display registers */
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osd_device->ops.start_layer(osd_device,
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layer->layer_info.id,
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addr,
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disp_dev->cbcr_ofst);
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ret = osd_device->ops.enable_layer(osd_device,
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layer->layer_info.id, 0);
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if (ret < 0) {
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v4l2_err(&vpbe_dev->v4l2_dev,
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"Error in enabling osd window layer 0\n");
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return -1;
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}
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/* Enable the window */
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layer->layer_info.enable = 1;
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if (cfg->pixfmt == PIXFMT_NV12) {
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struct vpbe_layer *otherlayer =
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_vpbe_display_get_other_win_layer(disp_dev, layer);
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ret = osd_device->ops.enable_layer(osd_device,
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otherlayer->layer_info.id, 1);
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if (ret < 0) {
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v4l2_err(&vpbe_dev->v4l2_dev,
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"Error in enabling osd window layer 1\n");
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return -1;
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}
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otherlayer->layer_info.enable = 1;
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}
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return 0;
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}
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static void
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vpbe_disp_calculate_scale_factor(struct vpbe_display *disp_dev,
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struct vpbe_layer *layer,
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int expected_xsize, int expected_ysize)
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{
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struct display_layer_info *layer_info = &layer->layer_info;
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struct v4l2_pix_format *pixfmt = &layer->pix_fmt;
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struct osd_layer_config *cfg = &layer->layer_info.config;
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struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
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int calculated_xsize;
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int h_exp = 0;
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int v_exp = 0;
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int h_scale;
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int v_scale;
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v4l2_std_id standard_id = vpbe_dev->current_timings.std_id;
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/*
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* Application initially set the image format. Current display
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* size is obtained from the vpbe display controller. expected_xsize
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* and expected_ysize are set through S_SELECTION ioctl. Based on this,
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* driver will calculate the scale factors for vertical and
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* horizontal direction so that the image is displayed scaled
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* and expanded. Application uses expansion to display the image
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* in a square pixel. Otherwise it is displayed using displays
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* pixel aspect ratio.It is expected that application chooses
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* the crop coordinates for cropped or scaled display. if crop
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* size is less than the image size, it is displayed cropped or
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* it is displayed scaled and/or expanded.
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*
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* to begin with, set the crop window same as expected. Later we
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* will override with scaled window size
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*/
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cfg->xsize = pixfmt->width;
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cfg->ysize = pixfmt->height;
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layer_info->h_zoom = ZOOM_X1; /* no horizontal zoom */
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layer_info->v_zoom = ZOOM_X1; /* no horizontal zoom */
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layer_info->h_exp = H_EXP_OFF; /* no horizontal zoom */
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layer_info->v_exp = V_EXP_OFF; /* no horizontal zoom */
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if (pixfmt->width < expected_xsize) {
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h_scale = vpbe_dev->current_timings.xres / pixfmt->width;
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if (h_scale < 2)
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h_scale = 1;
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else if (h_scale >= 4)
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h_scale = 4;
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else
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h_scale = 2;
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cfg->xsize *= h_scale;
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if (cfg->xsize < expected_xsize) {
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if ((standard_id & V4L2_STD_525_60) ||
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(standard_id & V4L2_STD_625_50)) {
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calculated_xsize = (cfg->xsize *
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VPBE_DISPLAY_H_EXP_RATIO_N) /
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VPBE_DISPLAY_H_EXP_RATIO_D;
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if (calculated_xsize <= expected_xsize) {
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h_exp = 1;
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cfg->xsize = calculated_xsize;
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}
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}
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}
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if (h_scale == 2)
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layer_info->h_zoom = ZOOM_X2;
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else if (h_scale == 4)
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layer_info->h_zoom = ZOOM_X4;
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if (h_exp)
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layer_info->h_exp = H_EXP_9_OVER_8;
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} else {
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/* no scaling, only cropping. Set display area to crop area */
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cfg->xsize = expected_xsize;
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}
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if (pixfmt->height < expected_ysize) {
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v_scale = expected_ysize / pixfmt->height;
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if (v_scale < 2)
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v_scale = 1;
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else if (v_scale >= 4)
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v_scale = 4;
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else
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v_scale = 2;
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cfg->ysize *= v_scale;
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if (cfg->ysize < expected_ysize) {
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if ((standard_id & V4L2_STD_625_50)) {
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calculated_xsize = (cfg->ysize *
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VPBE_DISPLAY_V_EXP_RATIO_N) /
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VPBE_DISPLAY_V_EXP_RATIO_D;
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if (calculated_xsize <= expected_ysize) {
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v_exp = 1;
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cfg->ysize = calculated_xsize;
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}
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}
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}
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if (v_scale == 2)
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layer_info->v_zoom = ZOOM_X2;
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else if (v_scale == 4)
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layer_info->v_zoom = ZOOM_X4;
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if (v_exp)
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layer_info->v_exp = V_EXP_6_OVER_5;
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} else {
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/* no scaling, only cropping. Set display area to crop area */
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cfg->ysize = expected_ysize;
|
}
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v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
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"crop display xsize = %d, ysize = %d\n",
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cfg->xsize, cfg->ysize);
|
}
|
|
static void vpbe_disp_adj_position(struct vpbe_display *disp_dev,
|
struct vpbe_layer *layer,
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int top, int left)
|
{
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struct osd_layer_config *cfg = &layer->layer_info.config;
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struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
|
|
cfg->xpos = min((unsigned int)left,
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vpbe_dev->current_timings.xres - cfg->xsize);
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cfg->ypos = min((unsigned int)top,
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vpbe_dev->current_timings.yres - cfg->ysize);
|
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v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
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"new xpos = %d, ypos = %d\n",
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cfg->xpos, cfg->ypos);
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}
|
|
static void vpbe_disp_check_window_params(struct vpbe_display *disp_dev,
|
struct v4l2_rect *c)
|
{
|
struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
|
|
if ((c->width == 0) ||
|
((c->width + c->left) > vpbe_dev->current_timings.xres))
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c->width = vpbe_dev->current_timings.xres - c->left;
|
|
if ((c->height == 0) || ((c->height + c->top) >
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vpbe_dev->current_timings.yres))
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c->height = vpbe_dev->current_timings.yres - c->top;
|
|
/* window height must be even for interlaced display */
|
if (vpbe_dev->current_timings.interlaced)
|
c->height &= (~0x01);
|
|
}
|
|
/*
|
* vpbe_try_format()
|
* If user application provides width and height, and have bytesperline set
|
* to zero, driver calculates bytesperline and sizeimage based on hardware
|
* limits.
|
*/
|
static int vpbe_try_format(struct vpbe_display *disp_dev,
|
struct v4l2_pix_format *pixfmt, int check)
|
{
|
struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
|
int min_height = 1;
|
int min_width = 32;
|
int max_height;
|
int max_width;
|
int bpp;
|
|
if ((pixfmt->pixelformat != V4L2_PIX_FMT_UYVY) &&
|
(pixfmt->pixelformat != V4L2_PIX_FMT_NV12))
|
/* choose default as V4L2_PIX_FMT_UYVY */
|
pixfmt->pixelformat = V4L2_PIX_FMT_UYVY;
|
|
/* Check the field format */
|
if ((pixfmt->field != V4L2_FIELD_INTERLACED) &&
|
(pixfmt->field != V4L2_FIELD_NONE)) {
|
if (vpbe_dev->current_timings.interlaced)
|
pixfmt->field = V4L2_FIELD_INTERLACED;
|
else
|
pixfmt->field = V4L2_FIELD_NONE;
|
}
|
|
if (pixfmt->field == V4L2_FIELD_INTERLACED)
|
min_height = 2;
|
|
if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
|
bpp = 1;
|
else
|
bpp = 2;
|
|
max_width = vpbe_dev->current_timings.xres;
|
max_height = vpbe_dev->current_timings.yres;
|
|
min_width /= bpp;
|
|
if (!pixfmt->width || (pixfmt->width < min_width) ||
|
(pixfmt->width > max_width)) {
|
pixfmt->width = vpbe_dev->current_timings.xres;
|
}
|
|
if (!pixfmt->height || (pixfmt->height < min_height) ||
|
(pixfmt->height > max_height)) {
|
pixfmt->height = vpbe_dev->current_timings.yres;
|
}
|
|
if (pixfmt->bytesperline < (pixfmt->width * bpp))
|
pixfmt->bytesperline = pixfmt->width * bpp;
|
|
/* Make the bytesperline 32 byte aligned */
|
pixfmt->bytesperline = ((pixfmt->width * bpp + 31) & ~31);
|
|
if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12)
|
pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height +
|
(pixfmt->bytesperline * pixfmt->height >> 1);
|
else
|
pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
|
|
return 0;
|
}
|
|
static int vpbe_display_querycap(struct file *file, void *priv,
|
struct v4l2_capability *cap)
|
{
|
struct vpbe_layer *layer = video_drvdata(file);
|
struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
|
|
snprintf(cap->driver, sizeof(cap->driver), "%s",
|
dev_name(vpbe_dev->pdev));
|
snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
|
dev_name(vpbe_dev->pdev));
|
strscpy(cap->card, vpbe_dev->cfg->module_name, sizeof(cap->card));
|
|
return 0;
|
}
|
|
static int vpbe_display_s_selection(struct file *file, void *priv,
|
struct v4l2_selection *sel)
|
{
|
struct vpbe_layer *layer = video_drvdata(file);
|
struct vpbe_display *disp_dev = layer->disp_dev;
|
struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
|
struct osd_layer_config *cfg = &layer->layer_info.config;
|
struct osd_state *osd_device = disp_dev->osd_device;
|
struct v4l2_rect rect = sel->r;
|
int ret;
|
|
v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
|
"VIDIOC_S_SELECTION, layer id = %d\n", layer->device_id);
|
|
if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT ||
|
sel->target != V4L2_SEL_TGT_CROP)
|
return -EINVAL;
|
|
if (rect.top < 0)
|
rect.top = 0;
|
if (rect.left < 0)
|
rect.left = 0;
|
|
vpbe_disp_check_window_params(disp_dev, &rect);
|
|
osd_device->ops.get_layer_config(osd_device,
|
layer->layer_info.id, cfg);
|
|
vpbe_disp_calculate_scale_factor(disp_dev, layer,
|
rect.width,
|
rect.height);
|
vpbe_disp_adj_position(disp_dev, layer, rect.top,
|
rect.left);
|
ret = osd_device->ops.set_layer_config(osd_device,
|
layer->layer_info.id, cfg);
|
if (ret < 0) {
|
v4l2_err(&vpbe_dev->v4l2_dev,
|
"Error in set layer config:\n");
|
return -EINVAL;
|
}
|
|
/* apply zooming and h or v expansion */
|
osd_device->ops.set_zoom(osd_device,
|
layer->layer_info.id,
|
layer->layer_info.h_zoom,
|
layer->layer_info.v_zoom);
|
ret = osd_device->ops.set_vid_expansion(osd_device,
|
layer->layer_info.h_exp,
|
layer->layer_info.v_exp);
|
if (ret < 0) {
|
v4l2_err(&vpbe_dev->v4l2_dev,
|
"Error in set vid expansion:\n");
|
return -EINVAL;
|
}
|
|
if ((layer->layer_info.h_zoom != ZOOM_X1) ||
|
(layer->layer_info.v_zoom != ZOOM_X1) ||
|
(layer->layer_info.h_exp != H_EXP_OFF) ||
|
(layer->layer_info.v_exp != V_EXP_OFF))
|
/* Enable expansion filter */
|
osd_device->ops.set_interpolation_filter(osd_device, 1);
|
else
|
osd_device->ops.set_interpolation_filter(osd_device, 0);
|
|
sel->r = rect;
|
return 0;
|
}
|
|
static int vpbe_display_g_selection(struct file *file, void *priv,
|
struct v4l2_selection *sel)
|
{
|
struct vpbe_layer *layer = video_drvdata(file);
|
struct osd_layer_config *cfg = &layer->layer_info.config;
|
struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
|
struct osd_state *osd_device = layer->disp_dev->osd_device;
|
struct v4l2_rect *rect = &sel->r;
|
|
v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
|
"VIDIOC_G_SELECTION, layer id = %d\n",
|
layer->device_id);
|
|
if (sel->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
|
return -EINVAL;
|
|
switch (sel->target) {
|
case V4L2_SEL_TGT_CROP:
|
osd_device->ops.get_layer_config(osd_device,
|
layer->layer_info.id, cfg);
|
rect->top = cfg->ypos;
|
rect->left = cfg->xpos;
|
rect->width = cfg->xsize;
|
rect->height = cfg->ysize;
|
break;
|
case V4L2_SEL_TGT_CROP_DEFAULT:
|
case V4L2_SEL_TGT_CROP_BOUNDS:
|
rect->left = 0;
|
rect->top = 0;
|
rect->width = vpbe_dev->current_timings.xres;
|
rect->height = vpbe_dev->current_timings.yres;
|
break;
|
default:
|
return -EINVAL;
|
}
|
|
return 0;
|
}
|
|
static int vpbe_display_g_pixelaspect(struct file *file, void *priv,
|
int type, struct v4l2_fract *f)
|
{
|
struct vpbe_layer *layer = video_drvdata(file);
|
struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
|
|
v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_CROPCAP ioctl\n");
|
|
if (type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
|
return -EINVAL;
|
|
*f = vpbe_dev->current_timings.aspect;
|
return 0;
|
}
|
|
static int vpbe_display_g_fmt(struct file *file, void *priv,
|
struct v4l2_format *fmt)
|
{
|
struct vpbe_layer *layer = video_drvdata(file);
|
struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
|
|
v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
|
"VIDIOC_G_FMT, layer id = %d\n",
|
layer->device_id);
|
|
/* If buffer type is video output */
|
if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
|
v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
|
return -EINVAL;
|
}
|
/* Fill in the information about format */
|
fmt->fmt.pix = layer->pix_fmt;
|
|
return 0;
|
}
|
|
static int vpbe_display_enum_fmt(struct file *file, void *priv,
|
struct v4l2_fmtdesc *fmt)
|
{
|
struct vpbe_layer *layer = video_drvdata(file);
|
struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
|
|
v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
|
"VIDIOC_ENUM_FMT, layer id = %d\n",
|
layer->device_id);
|
if (fmt->index > 1) {
|
v4l2_err(&vpbe_dev->v4l2_dev, "Invalid format index\n");
|
return -EINVAL;
|
}
|
|
/* Fill in the information about format */
|
if (fmt->index == 0)
|
fmt->pixelformat = V4L2_PIX_FMT_UYVY;
|
else
|
fmt->pixelformat = V4L2_PIX_FMT_NV12;
|
|
return 0;
|
}
|
|
static int vpbe_display_s_fmt(struct file *file, void *priv,
|
struct v4l2_format *fmt)
|
{
|
struct vpbe_layer *layer = video_drvdata(file);
|
struct vpbe_display *disp_dev = layer->disp_dev;
|
struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
|
struct osd_layer_config *cfg = &layer->layer_info.config;
|
struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
|
struct osd_state *osd_device = disp_dev->osd_device;
|
int ret;
|
|
v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
|
"VIDIOC_S_FMT, layer id = %d\n",
|
layer->device_id);
|
|
if (vb2_is_busy(&layer->buffer_queue))
|
return -EBUSY;
|
|
if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
|
v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "invalid type\n");
|
return -EINVAL;
|
}
|
/* Check for valid pixel format */
|
ret = vpbe_try_format(disp_dev, pixfmt, 1);
|
if (ret)
|
return ret;
|
|
/* YUV420 is requested, check availability of the
|
other video window */
|
|
layer->pix_fmt = *pixfmt;
|
if (pixfmt->pixelformat == V4L2_PIX_FMT_NV12) {
|
struct vpbe_layer *otherlayer;
|
|
otherlayer = _vpbe_display_get_other_win_layer(disp_dev, layer);
|
/* if other layer is available, only
|
* claim it, do not configure it
|
*/
|
ret = osd_device->ops.request_layer(osd_device,
|
otherlayer->layer_info.id);
|
if (ret < 0) {
|
v4l2_err(&vpbe_dev->v4l2_dev,
|
"Display Manager failed to allocate layer\n");
|
return -EBUSY;
|
}
|
}
|
|
/* Get osd layer config */
|
osd_device->ops.get_layer_config(osd_device,
|
layer->layer_info.id, cfg);
|
/* Store the pixel format in the layer object */
|
cfg->xsize = pixfmt->width;
|
cfg->ysize = pixfmt->height;
|
cfg->line_length = pixfmt->bytesperline;
|
cfg->ypos = 0;
|
cfg->xpos = 0;
|
cfg->interlaced = vpbe_dev->current_timings.interlaced;
|
|
if (V4L2_PIX_FMT_UYVY == pixfmt->pixelformat)
|
cfg->pixfmt = PIXFMT_YCBCRI;
|
|
/* Change of the default pixel format for both video windows */
|
if (V4L2_PIX_FMT_NV12 == pixfmt->pixelformat) {
|
struct vpbe_layer *otherlayer;
|
cfg->pixfmt = PIXFMT_NV12;
|
otherlayer = _vpbe_display_get_other_win_layer(disp_dev,
|
layer);
|
otherlayer->layer_info.config.pixfmt = PIXFMT_NV12;
|
}
|
|
/* Set the layer config in the osd window */
|
ret = osd_device->ops.set_layer_config(osd_device,
|
layer->layer_info.id, cfg);
|
if (ret < 0) {
|
v4l2_err(&vpbe_dev->v4l2_dev,
|
"Error in S_FMT params:\n");
|
return -EINVAL;
|
}
|
|
/* Readback and fill the local copy of current pix format */
|
osd_device->ops.get_layer_config(osd_device,
|
layer->layer_info.id, cfg);
|
|
return 0;
|
}
|
|
static int vpbe_display_try_fmt(struct file *file, void *priv,
|
struct v4l2_format *fmt)
|
{
|
struct vpbe_layer *layer = video_drvdata(file);
|
struct vpbe_display *disp_dev = layer->disp_dev;
|
struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
|
struct v4l2_pix_format *pixfmt = &fmt->fmt.pix;
|
|
v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_TRY_FMT\n");
|
|
if (V4L2_BUF_TYPE_VIDEO_OUTPUT != fmt->type) {
|
v4l2_err(&vpbe_dev->v4l2_dev, "invalid type\n");
|
return -EINVAL;
|
}
|
|
/* Check for valid field format */
|
return vpbe_try_format(disp_dev, pixfmt, 0);
|
|
}
|
|
/*
|
* vpbe_display_s_std - Set the given standard in the encoder
|
*
|
* Sets the standard if supported by the current encoder. Return the status.
|
* 0 - success & -EINVAL on error
|
*/
|
static int vpbe_display_s_std(struct file *file, void *priv,
|
v4l2_std_id std_id)
|
{
|
struct vpbe_layer *layer = video_drvdata(file);
|
struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
|
int ret;
|
|
v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_STD\n");
|
|
if (vb2_is_busy(&layer->buffer_queue))
|
return -EBUSY;
|
|
if (vpbe_dev->ops.s_std) {
|
ret = vpbe_dev->ops.s_std(vpbe_dev, std_id);
|
if (ret) {
|
v4l2_err(&vpbe_dev->v4l2_dev,
|
"Failed to set standard for sub devices\n");
|
return -EINVAL;
|
}
|
} else {
|
return -EINVAL;
|
}
|
|
return 0;
|
}
|
|
/*
|
* vpbe_display_g_std - Get the standard in the current encoder
|
*
|
* Get the standard in the current encoder. Return the status. 0 - success
|
* -EINVAL on error
|
*/
|
static int vpbe_display_g_std(struct file *file, void *priv,
|
v4l2_std_id *std_id)
|
{
|
struct vpbe_layer *layer = video_drvdata(file);
|
struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
|
|
v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_STD\n");
|
|
/* Get the standard from the current encoder */
|
if (vpbe_dev->current_timings.timings_type & VPBE_ENC_STD) {
|
*std_id = vpbe_dev->current_timings.std_id;
|
return 0;
|
}
|
|
return -EINVAL;
|
}
|
|
/*
|
* vpbe_display_enum_output - enumerate outputs
|
*
|
* Enumerates the outputs available at the vpbe display
|
* returns the status, -EINVAL if end of output list
|
*/
|
static int vpbe_display_enum_output(struct file *file, void *priv,
|
struct v4l2_output *output)
|
{
|
struct vpbe_layer *layer = video_drvdata(file);
|
struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
|
int ret;
|
|
v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_OUTPUT\n");
|
|
/* Enumerate outputs */
|
if (!vpbe_dev->ops.enum_outputs)
|
return -EINVAL;
|
|
ret = vpbe_dev->ops.enum_outputs(vpbe_dev, output);
|
if (ret) {
|
v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
|
"Failed to enumerate outputs\n");
|
return -EINVAL;
|
}
|
|
return 0;
|
}
|
|
/*
|
* vpbe_display_s_output - Set output to
|
* the output specified by the index
|
*/
|
static int vpbe_display_s_output(struct file *file, void *priv,
|
unsigned int i)
|
{
|
struct vpbe_layer *layer = video_drvdata(file);
|
struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
|
int ret;
|
|
v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_OUTPUT\n");
|
|
if (vb2_is_busy(&layer->buffer_queue))
|
return -EBUSY;
|
|
if (!vpbe_dev->ops.set_output)
|
return -EINVAL;
|
|
ret = vpbe_dev->ops.set_output(vpbe_dev, i);
|
if (ret) {
|
v4l2_err(&vpbe_dev->v4l2_dev,
|
"Failed to set output for sub devices\n");
|
return -EINVAL;
|
}
|
|
return 0;
|
}
|
|
/*
|
* vpbe_display_g_output - Get output from subdevice
|
* for a given by the index
|
*/
|
static int vpbe_display_g_output(struct file *file, void *priv,
|
unsigned int *i)
|
{
|
struct vpbe_layer *layer = video_drvdata(file);
|
struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
|
|
v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_OUTPUT\n");
|
/* Get the standard from the current encoder */
|
*i = vpbe_dev->current_out_index;
|
|
return 0;
|
}
|
|
/*
|
* vpbe_display_enum_dv_timings - Enumerate the dv timings
|
*
|
* enum the timings in the current encoder. Return the status. 0 - success
|
* -EINVAL on error
|
*/
|
static int
|
vpbe_display_enum_dv_timings(struct file *file, void *priv,
|
struct v4l2_enum_dv_timings *timings)
|
{
|
struct vpbe_layer *layer = video_drvdata(file);
|
struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
|
int ret;
|
|
v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_ENUM_DV_TIMINGS\n");
|
|
/* Enumerate outputs */
|
if (!vpbe_dev->ops.enum_dv_timings)
|
return -EINVAL;
|
|
ret = vpbe_dev->ops.enum_dv_timings(vpbe_dev, timings);
|
if (ret) {
|
v4l2_err(&vpbe_dev->v4l2_dev,
|
"Failed to enumerate dv timings info\n");
|
return -EINVAL;
|
}
|
|
return 0;
|
}
|
|
/*
|
* vpbe_display_s_dv_timings - Set the dv timings
|
*
|
* Set the timings in the current encoder. Return the status. 0 - success
|
* -EINVAL on error
|
*/
|
static int
|
vpbe_display_s_dv_timings(struct file *file, void *priv,
|
struct v4l2_dv_timings *timings)
|
{
|
struct vpbe_layer *layer = video_drvdata(file);
|
struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
|
int ret;
|
|
v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_S_DV_TIMINGS\n");
|
|
if (vb2_is_busy(&layer->buffer_queue))
|
return -EBUSY;
|
|
/* Set the given standard in the encoder */
|
if (!vpbe_dev->ops.s_dv_timings)
|
return -EINVAL;
|
|
ret = vpbe_dev->ops.s_dv_timings(vpbe_dev, timings);
|
if (ret) {
|
v4l2_err(&vpbe_dev->v4l2_dev,
|
"Failed to set the dv timings info\n");
|
return -EINVAL;
|
}
|
|
return 0;
|
}
|
|
/*
|
* vpbe_display_g_dv_timings - Set the dv timings
|
*
|
* Get the timings in the current encoder. Return the status. 0 - success
|
* -EINVAL on error
|
*/
|
static int
|
vpbe_display_g_dv_timings(struct file *file, void *priv,
|
struct v4l2_dv_timings *dv_timings)
|
{
|
struct vpbe_layer *layer = video_drvdata(file);
|
struct vpbe_device *vpbe_dev = layer->disp_dev->vpbe_dev;
|
|
v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "VIDIOC_G_DV_TIMINGS\n");
|
|
/* Get the given standard in the encoder */
|
|
if (vpbe_dev->current_timings.timings_type &
|
VPBE_ENC_DV_TIMINGS) {
|
*dv_timings = vpbe_dev->current_timings.dv_timings;
|
} else {
|
return -EINVAL;
|
}
|
|
return 0;
|
}
|
|
/*
|
* vpbe_display_open()
|
* It creates object of file handle structure and stores it in private_data
|
* member of filepointer
|
*/
|
static int vpbe_display_open(struct file *file)
|
{
|
struct vpbe_layer *layer = video_drvdata(file);
|
struct vpbe_display *disp_dev = layer->disp_dev;
|
struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
|
struct osd_state *osd_device = disp_dev->osd_device;
|
int err;
|
|
/* creating context for file descriptor */
|
err = v4l2_fh_open(file);
|
if (err) {
|
v4l2_err(&vpbe_dev->v4l2_dev, "v4l2_fh_open failed\n");
|
return err;
|
}
|
|
/* leaving if layer is already initialized */
|
if (!v4l2_fh_is_singular_file(file))
|
return err;
|
|
if (!layer->usrs) {
|
if (mutex_lock_interruptible(&layer->opslock))
|
return -ERESTARTSYS;
|
/* First claim the layer for this device */
|
err = osd_device->ops.request_layer(osd_device,
|
layer->layer_info.id);
|
mutex_unlock(&layer->opslock);
|
if (err < 0) {
|
/* Couldn't get layer */
|
v4l2_err(&vpbe_dev->v4l2_dev,
|
"Display Manager failed to allocate layer\n");
|
v4l2_fh_release(file);
|
return -EINVAL;
|
}
|
}
|
/* Increment layer usrs counter */
|
layer->usrs++;
|
v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev,
|
"vpbe display device opened successfully\n");
|
return 0;
|
}
|
|
/*
|
* vpbe_display_release()
|
* This function deletes buffer queue, frees the buffers and the davinci
|
* display file * handle
|
*/
|
static int vpbe_display_release(struct file *file)
|
{
|
struct vpbe_layer *layer = video_drvdata(file);
|
struct osd_layer_config *cfg = &layer->layer_info.config;
|
struct vpbe_display *disp_dev = layer->disp_dev;
|
struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
|
struct osd_state *osd_device = disp_dev->osd_device;
|
|
v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_release\n");
|
|
mutex_lock(&layer->opslock);
|
|
osd_device->ops.disable_layer(osd_device,
|
layer->layer_info.id);
|
/* Decrement layer usrs counter */
|
layer->usrs--;
|
/* If this file handle has initialize encoder device, reset it */
|
if (!layer->usrs) {
|
if (cfg->pixfmt == PIXFMT_NV12) {
|
struct vpbe_layer *otherlayer;
|
otherlayer =
|
_vpbe_display_get_other_win_layer(disp_dev, layer);
|
osd_device->ops.disable_layer(osd_device,
|
otherlayer->layer_info.id);
|
osd_device->ops.release_layer(osd_device,
|
otherlayer->layer_info.id);
|
}
|
osd_device->ops.disable_layer(osd_device,
|
layer->layer_info.id);
|
osd_device->ops.release_layer(osd_device,
|
layer->layer_info.id);
|
}
|
|
_vb2_fop_release(file, NULL);
|
mutex_unlock(&layer->opslock);
|
|
disp_dev->cbcr_ofst = 0;
|
|
return 0;
|
}
|
|
/* vpbe capture ioctl operations */
|
static const struct v4l2_ioctl_ops vpbe_ioctl_ops = {
|
.vidioc_querycap = vpbe_display_querycap,
|
.vidioc_g_fmt_vid_out = vpbe_display_g_fmt,
|
.vidioc_enum_fmt_vid_out = vpbe_display_enum_fmt,
|
.vidioc_s_fmt_vid_out = vpbe_display_s_fmt,
|
.vidioc_try_fmt_vid_out = vpbe_display_try_fmt,
|
|
.vidioc_reqbufs = vb2_ioctl_reqbufs,
|
.vidioc_create_bufs = vb2_ioctl_create_bufs,
|
.vidioc_querybuf = vb2_ioctl_querybuf,
|
.vidioc_qbuf = vb2_ioctl_qbuf,
|
.vidioc_dqbuf = vb2_ioctl_dqbuf,
|
.vidioc_streamon = vb2_ioctl_streamon,
|
.vidioc_streamoff = vb2_ioctl_streamoff,
|
.vidioc_expbuf = vb2_ioctl_expbuf,
|
|
.vidioc_g_pixelaspect = vpbe_display_g_pixelaspect,
|
.vidioc_g_selection = vpbe_display_g_selection,
|
.vidioc_s_selection = vpbe_display_s_selection,
|
|
.vidioc_s_std = vpbe_display_s_std,
|
.vidioc_g_std = vpbe_display_g_std,
|
|
.vidioc_enum_output = vpbe_display_enum_output,
|
.vidioc_s_output = vpbe_display_s_output,
|
.vidioc_g_output = vpbe_display_g_output,
|
|
.vidioc_s_dv_timings = vpbe_display_s_dv_timings,
|
.vidioc_g_dv_timings = vpbe_display_g_dv_timings,
|
.vidioc_enum_dv_timings = vpbe_display_enum_dv_timings,
|
};
|
|
static const struct v4l2_file_operations vpbe_fops = {
|
.owner = THIS_MODULE,
|
.open = vpbe_display_open,
|
.release = vpbe_display_release,
|
.unlocked_ioctl = video_ioctl2,
|
.mmap = vb2_fop_mmap,
|
.poll = vb2_fop_poll,
|
};
|
|
static int vpbe_device_get(struct device *dev, void *data)
|
{
|
struct platform_device *pdev = to_platform_device(dev);
|
struct vpbe_display *vpbe_disp = data;
|
|
if (strcmp("vpbe_controller", pdev->name) == 0)
|
vpbe_disp->vpbe_dev = platform_get_drvdata(pdev);
|
|
if (strstr(pdev->name, "vpbe-osd"))
|
vpbe_disp->osd_device = platform_get_drvdata(pdev);
|
|
return 0;
|
}
|
|
static int init_vpbe_layer(int i, struct vpbe_display *disp_dev,
|
struct platform_device *pdev)
|
{
|
struct vpbe_layer *vpbe_display_layer = NULL;
|
struct video_device *vbd = NULL;
|
|
/* Allocate memory for four plane display objects */
|
disp_dev->dev[i] = kzalloc(sizeof(*disp_dev->dev[i]), GFP_KERNEL);
|
if (!disp_dev->dev[i])
|
return -ENOMEM;
|
|
spin_lock_init(&disp_dev->dev[i]->irqlock);
|
mutex_init(&disp_dev->dev[i]->opslock);
|
|
/* Get the pointer to the layer object */
|
vpbe_display_layer = disp_dev->dev[i];
|
vbd = &vpbe_display_layer->video_dev;
|
/* Initialize field of video device */
|
vbd->release = video_device_release_empty;
|
vbd->fops = &vpbe_fops;
|
vbd->ioctl_ops = &vpbe_ioctl_ops;
|
vbd->minor = -1;
|
vbd->v4l2_dev = &disp_dev->vpbe_dev->v4l2_dev;
|
vbd->lock = &vpbe_display_layer->opslock;
|
vbd->vfl_dir = VFL_DIR_TX;
|
vbd->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
|
|
if (disp_dev->vpbe_dev->current_timings.timings_type &
|
VPBE_ENC_STD)
|
vbd->tvnorms = (V4L2_STD_525_60 | V4L2_STD_625_50);
|
|
snprintf(vbd->name, sizeof(vbd->name),
|
"DaVinci_VPBE Display_DRIVER_V%d.%d.%d",
|
(VPBE_DISPLAY_VERSION_CODE >> 16) & 0xff,
|
(VPBE_DISPLAY_VERSION_CODE >> 8) & 0xff,
|
(VPBE_DISPLAY_VERSION_CODE) & 0xff);
|
|
vpbe_display_layer->device_id = i;
|
|
vpbe_display_layer->layer_info.id =
|
((i == VPBE_DISPLAY_DEVICE_0) ? WIN_VID0 : WIN_VID1);
|
|
|
return 0;
|
}
|
|
static int register_device(struct vpbe_layer *vpbe_display_layer,
|
struct vpbe_display *disp_dev,
|
struct platform_device *pdev)
|
{
|
int err;
|
|
v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
|
"Trying to register VPBE display device.\n");
|
v4l2_info(&disp_dev->vpbe_dev->v4l2_dev,
|
"layer=%p,layer->video_dev=%p\n",
|
vpbe_display_layer,
|
&vpbe_display_layer->video_dev);
|
|
vpbe_display_layer->video_dev.queue = &vpbe_display_layer->buffer_queue;
|
err = video_register_device(&vpbe_display_layer->video_dev,
|
VFL_TYPE_VIDEO,
|
-1);
|
if (err)
|
return -ENODEV;
|
|
vpbe_display_layer->disp_dev = disp_dev;
|
/* set the driver data in platform device */
|
platform_set_drvdata(pdev, disp_dev);
|
video_set_drvdata(&vpbe_display_layer->video_dev,
|
vpbe_display_layer);
|
|
return 0;
|
}
|
|
|
|
/*
|
* vpbe_display_probe()
|
* This function creates device entries by register itself to the V4L2 driver
|
* and initializes fields of each layer objects
|
*/
|
static int vpbe_display_probe(struct platform_device *pdev)
|
{
|
struct vpbe_display *disp_dev;
|
struct v4l2_device *v4l2_dev;
|
struct resource *res = NULL;
|
struct vb2_queue *q;
|
int k;
|
int i;
|
int err;
|
int irq;
|
|
printk(KERN_DEBUG "vpbe_display_probe\n");
|
/* Allocate memory for vpbe_display */
|
disp_dev = devm_kzalloc(&pdev->dev, sizeof(*disp_dev), GFP_KERNEL);
|
if (!disp_dev)
|
return -ENOMEM;
|
|
spin_lock_init(&disp_dev->dma_queue_lock);
|
/*
|
* Scan all the platform devices to find the vpbe
|
* controller device and get the vpbe_dev object
|
*/
|
err = bus_for_each_dev(&platform_bus_type, NULL, disp_dev,
|
vpbe_device_get);
|
if (err < 0)
|
return err;
|
|
v4l2_dev = &disp_dev->vpbe_dev->v4l2_dev;
|
/* Initialize the vpbe display controller */
|
if (disp_dev->vpbe_dev->ops.initialize) {
|
err = disp_dev->vpbe_dev->ops.initialize(&pdev->dev,
|
disp_dev->vpbe_dev);
|
if (err) {
|
v4l2_err(v4l2_dev, "Error initing vpbe\n");
|
err = -ENOMEM;
|
goto probe_out;
|
}
|
}
|
|
for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
|
if (init_vpbe_layer(i, disp_dev, pdev)) {
|
err = -ENODEV;
|
goto probe_out;
|
}
|
}
|
|
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
|
if (!res) {
|
v4l2_err(v4l2_dev, "Unable to get VENC interrupt resource\n");
|
err = -ENODEV;
|
goto probe_out;
|
}
|
|
irq = res->start;
|
err = devm_request_irq(&pdev->dev, irq, venc_isr, 0,
|
VPBE_DISPLAY_DRIVER, disp_dev);
|
if (err) {
|
v4l2_err(v4l2_dev, "VPBE IRQ request failed\n");
|
goto probe_out;
|
}
|
|
for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
|
/* initialize vb2 queue */
|
q = &disp_dev->dev[i]->buffer_queue;
|
memset(q, 0, sizeof(*q));
|
q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
|
q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
|
q->drv_priv = disp_dev->dev[i];
|
q->ops = &video_qops;
|
q->mem_ops = &vb2_dma_contig_memops;
|
q->buf_struct_size = sizeof(struct vpbe_disp_buffer);
|
q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
|
q->min_buffers_needed = 1;
|
q->lock = &disp_dev->dev[i]->opslock;
|
q->dev = disp_dev->vpbe_dev->pdev;
|
err = vb2_queue_init(q);
|
if (err) {
|
v4l2_err(v4l2_dev, "vb2_queue_init() failed\n");
|
goto probe_out;
|
}
|
|
INIT_LIST_HEAD(&disp_dev->dev[i]->dma_queue);
|
|
if (register_device(disp_dev->dev[i], disp_dev, pdev)) {
|
err = -ENODEV;
|
goto probe_out;
|
}
|
}
|
|
v4l2_dbg(1, debug, v4l2_dev,
|
"Successfully completed the probing of vpbe v4l2 device\n");
|
|
return 0;
|
|
probe_out:
|
for (k = 0; k < VPBE_DISPLAY_MAX_DEVICES; k++) {
|
/* Unregister video device */
|
if (disp_dev->dev[k]) {
|
video_unregister_device(&disp_dev->dev[k]->video_dev);
|
kfree(disp_dev->dev[k]);
|
}
|
}
|
return err;
|
}
|
|
/*
|
* vpbe_display_remove()
|
* It un-register hardware layer from V4L2 driver
|
*/
|
static int vpbe_display_remove(struct platform_device *pdev)
|
{
|
struct vpbe_layer *vpbe_display_layer;
|
struct vpbe_display *disp_dev = platform_get_drvdata(pdev);
|
struct vpbe_device *vpbe_dev = disp_dev->vpbe_dev;
|
int i;
|
|
v4l2_dbg(1, debug, &vpbe_dev->v4l2_dev, "vpbe_display_remove\n");
|
|
/* deinitialize the vpbe display controller */
|
if (vpbe_dev->ops.deinitialize)
|
vpbe_dev->ops.deinitialize(&pdev->dev, vpbe_dev);
|
/* un-register device */
|
for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
|
/* Get the pointer to the layer object */
|
vpbe_display_layer = disp_dev->dev[i];
|
/* Unregister video device */
|
video_unregister_device(&vpbe_display_layer->video_dev);
|
|
}
|
for (i = 0; i < VPBE_DISPLAY_MAX_DEVICES; i++) {
|
kfree(disp_dev->dev[i]);
|
disp_dev->dev[i] = NULL;
|
}
|
|
return 0;
|
}
|
|
static struct platform_driver vpbe_display_driver = {
|
.driver = {
|
.name = VPBE_DISPLAY_DRIVER,
|
.bus = &platform_bus_type,
|
},
|
.probe = vpbe_display_probe,
|
.remove = vpbe_display_remove,
|
};
|
|
module_platform_driver(vpbe_display_driver);
|
|
MODULE_DESCRIPTION("TI DM644x/DM355/DM365 VPBE Display controller");
|
MODULE_LICENSE("GPL");
|
MODULE_AUTHOR("Texas Instruments");
|
