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rk fb:add ioctl for hwc addr

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This commit is contained in:
hjc
2014-09-10 10:55:11 +08:00
parent 0777fe09d6
commit 6e59d64faa
2 changed files with 47 additions and 0 deletions
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46
drivers/video/rockchip/rk_fb.c
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@@ -2394,6 +2394,7 @@ EXPORT_SYMBOL(rk_get_real_fps);
#ifdef CONFIG_ROCKCHIP_IOMMU
#define ION_MAX 10
static struct ion_handle *ion_hanle[ION_MAX];
static struct ion_handle *ion_hwc[1];
#endif
static int rk_fb_ioctl(struct fb_info *info, unsigned int cmd,
unsigned long arg)
@@ -2428,6 +2429,51 @@ static int rk_fb_ioctl(struct fb_info *info, unsigned int cmd,
}
switch (cmd) {
case RK_FBIOSET_HWC_ADDR:
{
u32 hwc_phy[1];
if (copy_from_user(hwc_phy, argp, 4))
return -EFAULT;
if (!dev_drv->iommu_enabled) {
fix->smem_start = hwc_phy[0];
} else {
int usr_fd;
struct ion_handle *hdl;
ion_phys_addr_t phy_addr;
size_t len;
usr_fd = hwc_phy[0];
if (!usr_fd) {
fix->smem_start = 0;
fix->mmio_start = 0;
break;
}
if (ion_hwc[0] != 0) {
ion_free(rk_fb->ion_client, ion_hwc[0]);
ion_hwc[0] = 0;
}
hdl = ion_import_dma_buf(rk_fb->ion_client, usr_fd);
if (IS_ERR(hdl)) {
dev_err(info->dev, "failed to get hwc ion handle:%ld\n",
PTR_ERR(hdl));
return -EFAULT;
}
ret = ion_map_iommu(dev_drv->dev, rk_fb->ion_client, hdl,
(unsigned long *)&phy_addr,
(unsigned long *)&len);
if (ret < 0) {
dev_err(info->dev, "ion map to get hwc phy addr failed");
ion_free(rk_fb->ion_client, hdl);
return -ENOMEM;
}
fix->smem_start = phy_addr;
ion_hwc[0] = hdl;
}
break;
}
case RK_FBIOSET_YUV_ADDR:
{
u32 yuv_phy[2];

1
include/linux/rk_fb.h
View File

@@ -54,6 +54,7 @@
#define RK_FBIOGET_16OR32 0X4621
#define RK_FBIOGET_IDLEFBUff_16OR32 0X4622
#define RK_FBIOSET_COMPOSE_LAYER_COUNTS 0X4623
#define RK_FBIOSET_HWC_ADDR 0x4624
#define RK_FBIOGET_DMABUF_FD 0x5003
#define RK_FBIOSET_DMABUF_FD 0x5004