diff options
Diffstat (limited to 'meta/recipes-kernel/linux/linux-omap-2.6.29/isp/standalone/0002-Resizer-bug-fixes-on-top-of-1.0.2-release.patch')
| -rw-r--r-- | meta/recipes-kernel/linux/linux-omap-2.6.29/isp/standalone/0002-Resizer-bug-fixes-on-top-of-1.0.2-release.patch | 730 |
1 files changed, 730 insertions, 0 deletions
diff --git a/meta/recipes-kernel/linux/linux-omap-2.6.29/isp/standalone/0002-Resizer-bug-fixes-on-top-of-1.0.2-release.patch b/meta/recipes-kernel/linux/linux-omap-2.6.29/isp/standalone/0002-Resizer-bug-fixes-on-top-of-1.0.2-release.patch new file mode 100644 index 0000000000..631b05f417 --- /dev/null +++ b/meta/recipes-kernel/linux/linux-omap-2.6.29/isp/standalone/0002-Resizer-bug-fixes-on-top-of-1.0.2-release.patch @@ -0,0 +1,730 @@ +From 20d79137ecaa6c7dad007d9ea1d7be5550db4839 Mon Sep 17 00:00:00 2001 +From: Vaibhav Hiremath <hvaibhav@ti.com> +Date: Fri, 13 Feb 2009 15:40:25 +0530 +Subject: [PATCH 2/2] Resizer bug fixes on top of 1.0.2 release + +This commit contains resizer bug fixes on top of + PSP1.0.2 release - + - 4096 aligned address constraint + - workaround for extra page allocation for page aligned + size buffers + +Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com> +--- + drivers/media/video/isp/omap_resizer.c | 417 ++++++++++++++++++++++++-------- + include/linux/omap_resizer.h | 3 +- + 2 files changed, 321 insertions(+), 99 deletions(-) + +diff --git a/drivers/media/video/isp/omap_resizer.c b/drivers/media/video/isp/omap_resizer.c +index 54bc425..8059c70 100644 +--- a/drivers/media/video/isp/omap_resizer.c ++++ b/drivers/media/video/isp/omap_resizer.c +@@ -28,6 +28,7 @@ + #include <linux/platform_device.h> + #include <linux/io.h> + #include <linux/uaccess.h> ++#include <linux/pci.h> + #include <media/v4l2-dev.h> + #include <asm/cacheflush.h> + +@@ -76,6 +77,10 @@ + #define MAX_COEF_COUNTER 16 + #define COEFF_ADDRESS_OFFSET 0x04 + ++#define RSZ_DEF_REQ_EXP 0xE /* Default read operation expand ++ * for the Resizer driver; value ++ * taken from Davinci. ++ */ + /* Global structure which contains information about number of channels + and protection variables */ + struct device_params { +@@ -85,6 +90,7 @@ struct device_params { + struct mutex reszwrap_mutex; /* Semaphore for array */ + + struct videobuf_queue_ops vbq_ops; /* videobuf queue operations */ ++ unsigned long extra_page_addr; + }; + + /* Register mapped structure which contains the every register +@@ -126,6 +132,9 @@ struct resizer_config { + u32 rsz_yehn; /* yehn(luma)register mapping + * variable. + */ ++ u32 sdr_req_exp; /* Configuration for Non ++ * real time read expand ++ */ + }; + + struct rsz_mult { +@@ -179,6 +188,7 @@ struct channel_config { + * channel is busy or not + */ + struct mutex chanprotection_mutex; ++ int buf_address[VIDEO_MAX_FRAME]; + enum config_done config_state; + u8 input_buf_index; + u8 output_buf_index; +@@ -200,8 +210,6 @@ struct rsz_fh { + struct videobuf_queue vbq; + struct device_params *device; + +- dma_addr_t isp_addr_read; /* Input/Output address */ +- dma_addr_t isp_addr_write; /* Input/Output address */ + u32 rsz_bufsize; /* channel specific buffersize + */ + }; +@@ -227,6 +235,10 @@ static int rsz_set_ratio(struct rsz_mult *multipass, + static void rsz_config_ratio(struct rsz_mult *multipass, + struct channel_config *rsz_conf_chan); + ++static void inline rsz_set_exp(unsigned int exp) ++{ ++ omap_writel(((exp & 0x3FF) << 10), OMAP3ISP_SBL_REG(0xF8)); ++} + /** + * rsz_hardware_setup - Sets hardware configuration registers + * @rsz_conf_chan: Structure containing channel configuration +@@ -271,12 +283,15 @@ static void rsz_hardware_setup(struct channel_config *rsz_conf_chan) + + coeffoffset)); + coeffoffset = coeffoffset + COEFF_ADDRESS_OFFSET; + } ++ /* Configure the read expand register */ ++ rsz_set_exp(rsz_conf_chan->register_config.sdr_req_exp); + } + + /** + * rsz_start - Enables Resizer Wrapper + * @arg: Currently not used. +- * @device: Structure containing ISP resizer wrapper global information ++ * @fh: File structure containing ISP resizer information specific to ++ * channel opened. + * + * Submits a resizing task specified by the rsz_resize structure. The call can + * either be blocked until the task is completed or returned immediately based +@@ -292,12 +307,18 @@ int rsz_start(int *arg, struct rsz_fh *fh) + struct channel_config *rsz_conf_chan = fh->config; + struct rsz_mult *multipass = fh->multipass; + struct videobuf_queue *q = &fh->vbq; ++ struct videobuf_buffer *buf; + int ret; + + if (rsz_conf_chan->config_state) { + dev_err(rsz_device, "State not configured \n"); + goto err_einval; + } ++ if (!rsz_conf_chan->register_config.rsz_sdr_inadd || ++ !rsz_conf_chan->register_config.rsz_sdr_outadd) { ++ dev_err(rsz_device, "address is null\n"); ++ goto err_einval; ++ } + + rsz_conf_chan->status = CHANNEL_BUSY; + +@@ -325,33 +346,22 @@ mult: + goto mult; + } + +- if (fh->isp_addr_read) { +- ispmmu_vunmap(fh->isp_addr_read); +- fh->isp_addr_read = 0; +- } +- if (fh->isp_addr_write) { +- ispmmu_vunmap(fh->isp_addr_write); +- fh->isp_addr_write = 0; +- } +- + rsz_conf_chan->status = CHANNEL_FREE; +- q->bufs[rsz_conf_chan->input_buf_index]->state = VIDEOBUF_NEEDS_INIT; +- q->bufs[rsz_conf_chan->output_buf_index]->state = VIDEOBUF_NEEDS_INIT; + rsz_conf_chan->register_config.rsz_sdr_outadd = 0; + rsz_conf_chan->register_config.rsz_sdr_inadd = 0; + +- /* Unmap and free the DMA memory allocated for buffers */ +- videobuf_dma_unmap(q, videobuf_to_dma( +- q->bufs[rsz_conf_chan->input_buf_index])); +- videobuf_dma_unmap(q, videobuf_to_dma( +- q->bufs[rsz_conf_chan->output_buf_index])); +- videobuf_dma_free(videobuf_to_dma( +- q->bufs[rsz_conf_chan->input_buf_index])); +- videobuf_dma_free(videobuf_to_dma( +- q->bufs[rsz_conf_chan->output_buf_index])); +- + isp_unset_callback(CBK_RESZ_DONE); + ++ /* Empty the Videobuf queue which was filled during the qbuf */ ++ buf = q->bufs[rsz_conf_chan->input_buf_index]; ++ buf->state = VIDEOBUF_IDLE; ++ list_del(&buf->stream); ++ if (rsz_conf_chan->input_buf_index != rsz_conf_chan->output_buf_index) { ++ buf = q->bufs[rsz_conf_chan->output_buf_index]; ++ buf->state = VIDEOBUF_IDLE; ++ list_del(&buf->stream); ++ } ++ + return 0; + err_einval: + return -EINVAL; +@@ -359,6 +369,8 @@ err_einval: + + /** + * rsz_set_multipass - Set resizer multipass ++ * @multipass: Structure containing channel configuration ++ for multipass support + * @rsz_conf_chan: Structure containing channel configuration + * + * Returns always 0 +@@ -384,6 +396,8 @@ static int rsz_set_multipass(struct rsz_mult *multipass, + + /** + * rsz_copy_data - Copy data ++ * @multipass: Structure containing channel configuration ++ for multipass support + * @params: Structure containing the Resizer Wrapper parameters + * + * Copy data +@@ -413,6 +427,8 @@ static void rsz_copy_data(struct rsz_mult *multipass, struct rsz_params *params) + + /** + * rsz_set_params - Set parameters for resizer wrapper ++ * @multipass: Structure containing channel configuration ++ for multipass support + * @params: Structure containing the Resizer Wrapper parameters + * @rsz_conf_chan: Structure containing channel configuration + * +@@ -524,6 +540,8 @@ static int rsz_set_params(struct rsz_mult *multipass, struct rsz_params *params, + } + + rsz_config_ratio(multipass, rsz_conf_chan); ++ /* Default value for read expand:Taken from Davinci */ ++ rsz_conf_chan->register_config.sdr_req_exp = RSZ_DEF_REQ_EXP; + + rsz_conf_chan->config_state = STATE_CONFIGURED; + +@@ -534,6 +552,8 @@ err_einval: + + /** + * rsz_set_ratio - Set ratio ++ * @multipass: Structure containing channel configuration ++ for multipass support + * @rsz_conf_chan: Structure containing channel configuration + * + * Returns 0 if successful, -EINVAL if invalid output size, upscaling ratio is +@@ -548,7 +568,8 @@ static int rsz_set_ratio(struct rsz_mult *multipass, + + if ((multipass->out_hsize > MAX_IMAGE_WIDTH) || + (multipass->out_vsize > MAX_IMAGE_WIDTH)) { +- dev_err(rsz_device, "Invalid output size!"); ++ dev_err(rsz_device, "Invalid output size! - %d", \ ++ multipass->out_hsize); + goto err_einval; + } + if (multipass->cbilin) { +@@ -758,6 +779,8 @@ err_einval: + + /** + * rsz_config_ratio - Configure ratio ++ * @multipass: Structure containing channel configuration ++ for multipass support + * @rsz_conf_chan: Structure containing channel configuration + * + * Configure ratio +@@ -789,6 +812,20 @@ static void rsz_config_ratio(struct rsz_mult *multipass, + ((vsize << ISPRSZ_IN_SIZE_VERT_SHIFT) + & ISPRSZ_IN_SIZE_VERT_MASK); + ++ /* This is another workaround for the ISP-MMU translation fault. ++ For the parameters whose image size comes exactly to PAGE_SIZE ++ generates ISP-MMU translation fault. The root-cause is the equation ++ input width = (32*sph + (ow - 1)*hrsz + 16) >> 8 + 7 ++ = (64*sph + (ow - 1)*hrsz + 32) >> 8 + 7 ++ input height = (32*spv + (oh - 1)*vrsz + 16) >> 8 + 4 ++ = (64*spv + (oh - 1)*vrsz + 32) >> 8 + 7 ++ ++ we are adjusting the input width to suit for Resizer module, ++ application should use this configuration henceforth. ++ */ ++ multipass->in_hsize = hsize; ++ multipass->in_vsize = vsize; ++ + for (coeffcounter = 0; coeffcounter < MAX_COEF_COUNTER; + coeffcounter++) { + if (multipass->num_htap) { +@@ -990,24 +1027,15 @@ static void rsz_calculate_crop(struct channel_config *rsz_conf_chan, + static void rsz_vbq_release(struct videobuf_queue *q, + struct videobuf_buffer *vb) + { +- int i; + struct rsz_fh *fh = q->priv_data; ++ struct videobuf_dmabuf *dma = NULL; + +- for (i = 0; i < VIDEO_MAX_FRAME; i++) { +- struct videobuf_dmabuf *dma = NULL; +- if (!q->bufs[i]) +- continue; +- if (q->bufs[i]->memory != V4L2_MEMORY_MMAP) +- continue; +- dma = videobuf_to_dma(q->bufs[i]); +- videobuf_dma_unmap(q, dma); +- videobuf_dma_free(dma); +- } ++ dma = videobuf_to_dma(q->bufs[vb->i]); ++ videobuf_dma_unmap(q, dma); ++ videobuf_dma_free(dma); ++ ispmmu_vunmap(fh->config->buf_address[vb->i]); ++ fh->config->buf_address[vb->i] = 0; + +- ispmmu_vunmap(fh->isp_addr_read); +- ispmmu_vunmap(fh->isp_addr_write); +- fh->isp_addr_read = 0; +- fh->isp_addr_write = 0; + spin_lock(&fh->vbq_lock); + vb->state = VIDEOBUF_NEEDS_INIT; + spin_unlock(&fh->vbq_lock); +@@ -1062,7 +1090,105 @@ err_einval: + spin_unlock(&fh->vbq_lock); + return -EINVAL; + } ++/* ++ * This function is work around for the videobuf_iolock API, ++ * for User memory allocated with ioremap (VM_IO flag) the API ++ * get_user_pages fails. ++ * ++ * To fulfill this requirement, we have completely ignored VM layer of ++ * Linux, and configuring the ISP MMU with physical address. ++ */ ++static int omap_videobuf_dma_init_user(struct videobuf_buffer *vb, ++ unsigned long physp, unsigned long asize) ++{ ++ struct videobuf_dmabuf *dma; ++ struct scatterlist *sglist; ++ unsigned long data, first, last; ++ int len, i = 0; ++ ++ dma = videobuf_to_dma(vb); ++ data = vb->baddr; ++ ++ first = (data & PAGE_MASK) >> PAGE_SHIFT; ++ last = ((data+asize-1) & PAGE_MASK) >> PAGE_SHIFT; ++ dma->offset = data & ~PAGE_MASK; ++ dma->nr_pages = last-first+1; ++ ++ dma->direction = PCI_DMA_FROMDEVICE; ++ /* ++ * Allocate array of sglen + 1, to add entry of extra page ++ * for input buffer. Driver always uses 0th buffer as input buffer. ++ */ ++ len = dma->nr_pages + (vb->i ? 0 : 1); ++ sglist = kcalloc(len, sizeof(*sglist), GFP_KERNEL); ++ if (NULL == sglist) ++ return -ENOMEM; ++ ++ sglist[0].offset = 0; ++ sglist[0].length = PAGE_SIZE - dma->offset; ++ sglist[0].dma_address = (dma_addr_t)physp; ++ physp += sglist[0].length; ++ /* ++ * Iterate in a loop for the number of pages ++ */ ++ for (i = 1; i < (len - (vb->i ? 0 : 1)); i++) { ++ sglist[i].offset = 0; ++ sglist[i].length = PAGE_SIZE; ++ sglist[i].dma_address = (dma_addr_t)physp; ++ physp += PAGE_SIZE; ++ } ++ if (0 == vb->i) { ++ sglist[i].offset = 0; ++ sglist[i].length = PAGE_SIZE; ++ sglist[i].dma_address = ++ (dma_addr_t)device_config->extra_page_addr; ++ } ++ dma->sglist = sglist; ++ dma->sglen = len; ++ return 0; ++ ++ } ++/* ++ * This function is workaround for the issue, where ISP-MMU generated ++ * translation fault for specific params whose size is aligned to PAGE_SIZE. ++ ++ * As a workaround we are padding one extra page for input buffer. This page ++ * we are allocating during init time and will not be released through-out ++ * life time of resizer driver. Please note that Resizer module only reads ++ * from this extra page. ++ */ ++int omap_create_sg(struct videobuf_queue *q, struct videobuf_dmabuf *dma) ++{ ++ struct scatterlist *sglist; ++ int sglen; + ++ sglen = dma->sglen; ++ sglist = kcalloc(sglen + 1, sizeof(*sglist), GFP_KERNEL); ++ if (NULL == sglist) ++ return -ENOMEM; ++ /* ++ * Copy the sglist locally ++ */ ++ memcpy(sglist, dma->sglist, sglen * sizeof(*sglist)); ++ /* ++ * Release the old sglist, since we already copied it locally ++ */ ++ videobuf_dma_unmap(q, dma); ++ /* ++ * Add extra entry to sglist to work with specific params, whose ++ * buffer address alined to PAGE_SIZE. ++ */ ++ sglist[sglen].offset = 0; ++ sglist[sglen].length = PAGE_SIZE; ++ sglist[sglen].dma_address = (dma_addr_t)device_config->extra_page_addr; ++ sglen++; ++ /* ++ * Save the sglist for mapping to ISP-MMU space ++ */ ++ dma->sglist = sglist; ++ dma->sglen = sglen; ++ return 0; ++} + /** + * rsz_vbq_prepare - Videobuffer is prepared and mmapped. + * @q: Structure containing the videobuffer queue file handle, and device +@@ -1079,19 +1205,24 @@ static int rsz_vbq_prepare(struct videobuf_queue *q, + { + struct rsz_fh *fh = q->priv_data; + struct channel_config *rsz_conf_chan = fh->config; +- struct rsz_mult *multipass = fh->multipass; + int err = 0; + unsigned int isp_addr, insize, outsize; +- struct videobuf_dmabuf *dma = videobuf_to_dma(vb); +- ++ struct rsz_mult *multipass = fh->multipass; + spin_lock(&fh->vbq_lock); + if (vb->baddr) { ++ /* Check for 32 byte alignement */ ++ if (vb->baddr != (vb->baddr & ~0x1F)) { ++ spin_unlock(&fh->vbq_lock); ++ dev_err(rsz_device, "Buffer address should be aligned \ ++ to 32 byte\n"); ++ return -EINVAL; ++ } + vb->size = fh->rsz_bufsize; + vb->bsize = fh->rsz_bufsize; + } else { + spin_unlock(&fh->vbq_lock); + dev_err(rsz_device, "No user buffer allocated\n"); +- goto out; ++ return -EINVAL; + } + if (vb->i) { + vb->width = fh->params->out_hsize; +@@ -1103,55 +1234,128 @@ static int rsz_vbq_prepare(struct videobuf_queue *q, + + vb->field = field; + spin_unlock(&fh->vbq_lock); ++ /* ++ * Calculate input and output sizes, will be used while mapping ++ * user pages ++ */ ++ outsize = multipass->out_pitch * multipass->out_vsize; ++ insize = multipass->in_pitch * multipass->in_vsize; + + if (vb->state == VIDEOBUF_NEEDS_INIT) { +- err = videobuf_iolock(q, vb, NULL); +- if (!err) { +- isp_addr = ispmmu_vmap(dma->sglist, dma->sglen); +- if (!isp_addr) +- err = -EIO; +- else { +- if (vb->i) { +- rsz_conf_chan->register_config. +- rsz_sdr_outadd +- = isp_addr; +- fh->isp_addr_write = isp_addr; +- rsz_conf_chan->output_buf_index = vb->i; +- } else { ++ struct videobuf_dmabuf *dma; ++ struct vm_area_struct *vma; ++ spin_lock(&fh->vbq_lock); ++ dma = videobuf_to_dma(vb); ++ vma = find_vma(current->mm, vb->baddr); ++ if ((vma) && (vma->vm_flags & VM_IO) && (vma->vm_pgoff)) { ++ /* This will catch ioremaped buffers to the kernel. ++ * It gives two possible scenarios - ++ * - Driver allocates buffer using either ++ * dma_alloc_coherent or get_free_pages, ++ * and maps to user space using ++ * io_remap_pfn_range/remap_pfn_range ++ * - Drivers maps memory outside from Linux using ++ * io_remap ++ */ ++ unsigned long physp = 0, asize; ++ asize = vb->i ? outsize : insize; ++ if ((vb->baddr + asize) > vma->vm_end) { ++ spin_unlock(&fh->vbq_lock); ++ dev_err(rsz_device, "User Buffer Allocation:" \ ++ "err=%lu[%lu]\n",\ ++ (vma->vm_end - vb->baddr), asize); ++ return -ENOMEM; ++ } ++ physp = (vma->vm_pgoff << PAGE_SHIFT) + ++ (vb->baddr - vma->vm_start); ++ err = omap_videobuf_dma_init_user(vb, physp, asize); ++ spin_unlock(&fh->vbq_lock); ++ if (0 != err) ++ return err; ++ } else { ++ err = videobuf_iolock(q, vb, NULL); ++ /* ++ * In case of user pointer mode, the get_user_pages ++ * will fail if user has allocated less memory than ++ * vb->size. But it is not error from resizer driver ++ * point of view. so handled seperately ++ */ ++ if ((err < 0) && (dma->nr_pages > 0)) ++ err = videobuf_dma_map(q, dma); ++ if (err) ++ goto buf_release; ++ /* ++ * Add one extra page for input buffer ++ */ ++ if (0 == vb->i) ++ err = omap_create_sg(q, dma); ++ if (err) ++ goto buf_release; ++ spin_unlock(&fh->vbq_lock); ++ } ++ isp_addr = ispmmu_vmap(dma->sglist, dma->sglen); ++ if (!isp_addr) ++ err = -EIO; ++ else { ++ if (vb->i) { ++ rsz_conf_chan->buf_address[vb->i] = isp_addr; ++ rsz_conf_chan->register_config. ++ rsz_sdr_outadd ++ = isp_addr; ++ rsz_conf_chan->output_buf_index = vb->i; ++ } else { ++ rsz_conf_chan->buf_address[vb->i] = isp_addr; ++ rsz_conf_chan->register_config. ++ rsz_sdr_inadd ++ = isp_addr; ++ rsz_conf_chan->input_buf_index = vb->i; ++ if (outsize < insize && rsz_conf_chan-> ++ register_config. ++ rsz_sdr_outadd == 0) { + rsz_conf_chan->register_config. +- rsz_sdr_inadd +- = isp_addr; +- rsz_conf_chan->input_buf_index = vb->i; +- outsize = multipass->out_pitch * +- multipass->out_vsize; +- insize = multipass->in_pitch * +- multipass->in_vsize; +- if (outsize < insize) { +- rsz_conf_chan->register_config. +- rsz_sdr_outadd +- = isp_addr; +- rsz_conf_chan-> +- output_buf_index = +- vb->i; +- } +- +- fh->isp_addr_read = isp_addr; ++ rsz_sdr_outadd ++ = isp_addr; ++ rsz_conf_chan-> ++ output_buf_index = ++ vb->i; + } + } + } + +- } ++ } else { ++ if(vb->i) { ++ rsz_conf_chan->register_config. ++ rsz_sdr_outadd = ++ rsz_conf_chan->buf_address[vb->i]; ++ rsz_conf_chan->output_buf_index = vb->i; ++ } else { ++ rsz_conf_chan->register_config. ++ rsz_sdr_inadd = ++ rsz_conf_chan->buf_address[vb->i]; ++ rsz_conf_chan->input_buf_index = vb->i; ++ if(outsize < insize && rsz_conf_chan-> ++ register_config. ++ rsz_sdr_outadd == 0) { ++ rsz_conf_chan->register_config. ++ rsz_sdr_outadd ++ = rsz_conf_chan->buf_address[vb->i]; ++ rsz_conf_chan->output_buf_index = vb->i; ++ } ++ ++ } + ++ } + if (!err) { + spin_lock(&fh->vbq_lock); + vb->state = VIDEOBUF_PREPARED; + spin_unlock(&fh->vbq_lock); +- flush_cache_user_range(NULL, vb->baddr, (vb->baddr +- + vb->bsize)); + } else + rsz_vbq_release(q, vb); + +-out: ++ return err; ++buf_release: ++ spin_unlock(&fh->vbq_lock); ++ rsz_vbq_release(q, vb); + return err; + } + +@@ -1255,7 +1459,8 @@ err_enomem0: + **/ + static int rsz_release(struct inode *inode, struct file *filp) + { +- u32 timeout = 0; ++ int i; ++ unsigned int timeout = 0; + struct rsz_fh *fh = filp->private_data; + struct channel_config *rsz_conf_chan = fh->config; + struct rsz_params *params = fh->params; +@@ -1266,17 +1471,17 @@ static int rsz_release(struct inode *inode, struct file *filp) + timeout++; + schedule(); + } +- if (mutex_lock_interruptible(&device_config->reszwrap_mutex)) +- return -EINTR; +- device_config->opened--; +- mutex_unlock(&device_config->reszwrap_mutex); +- /* This will Free memory allocated to the buffers, +- * and flushes the queue +- */ +- videobuf_queue_cancel(q); +- fh->params = NULL; +- fh->config = NULL; ++ /* Free memory allocated to the buffers */ ++ for (i = 0 ; i < VIDEO_MAX_FRAME ; i++) { ++ struct videobuf_dmabuf *dma = NULL; ++ if (!q->bufs[i]) ++ continue; ++ dma = videobuf_to_dma(q->bufs[i]); ++ videobuf_dma_unmap(q, dma); ++ videobuf_dma_free(dma); ++ } + ++ videobuf_mmap_free(q); + fh->rsz_bufsize = 0; + filp->private_data = NULL; + +@@ -1286,7 +1491,8 @@ static int rsz_release(struct inode *inode, struct file *filp) + kfree(fh); + + isp_put(); +- ++ fh->params = NULL; ++ fh->config = NULL; + return 0; + } + +@@ -1353,6 +1559,12 @@ static long rsz_unlocked_ioctl(struct file *file, unsigned int cmd, + chanprotection_mutex)) + return -EINTR; + ret = videobuf_reqbufs(&fh->vbq, (void *)&req_buf); ++ if (ret >= 0) { ++ if (copy_to_user((struct v4l2_requestbuffers *)arg, ++ &req_buf, sizeof(struct ++ v4l2_requestbuffers))) ++ return -EFAULT; ++ } + mutex_unlock(&rsz_conf_chan->chanprotection_mutex); + break; + } +@@ -1394,11 +1606,7 @@ static long rsz_unlocked_ioctl(struct file *file, unsigned int cmd, + sizeof(struct rsz_params))) { + return -EFAULT; + } +- if (mutex_lock_interruptible(&rsz_conf_chan-> +- chanprotection_mutex)) +- return -EINTR; +- ret = rsz_set_params(fh->multipass, params, rsz_conf_chan); +- mutex_unlock(&rsz_conf_chan->chanprotection_mutex); ++ ret = rsz_set_params(fh->multipass, fh->params, rsz_conf_chan); + break; + } + case RSZ_G_PARAM: +@@ -1433,6 +1641,12 @@ static long rsz_unlocked_ioctl(struct file *file, unsigned int cmd, + rsz_calculate_crop(rsz_conf_chan, (struct rsz_cropsize *)arg); + break; + ++ case RSZ_S_EXP: ++ if (mutex_lock_interruptible(&rsz_conf_chan->chanprotection_mutex)) ++ return -EINTR; ++ rsz_conf_chan->register_config.sdr_req_exp = *((unsigned int *)arg); ++ mutex_unlock(&rsz_conf_chan->chanprotection_mutex); ++ break; + default: + dev_err(rsz_device, "resizer_ioctl: Invalid Command Value"); + return -EINVAL; +@@ -1535,14 +1749,18 @@ static int __init omap_rsz_init(void) + "memory\n"); + return -ENOMEM; + } +- ++ device->extra_page_addr = __get_free_pages(GFP_KERNEL | GFP_DMA, 0); ++ if (!device->extra_page_addr) { ++ dev_err(rsz_device, OMAP_REZR_NAME ":Allocation failed. "); ++ kfree(device); ++ return -ENOMEM; ++ } + ret = alloc_chrdev_region(&dev, 0, 1, OMAP_REZR_NAME); + if (ret < 0) { + dev_err(rsz_device, OMAP_REZR_NAME ": intialization failed. " + "Could not allocate region " + "for character device\n"); +- kfree(device); +- return -ENODEV; ++ goto fail1; + } + + /* Register the driver in the kernel */ +@@ -1608,6 +1826,8 @@ fail3: + cdev_del(&c_dev); + fail2: + unregister_chrdev_region(dev, 1); ++fail1: ++ free_pages((unsigned long)device->extra_page_addr, 0); + kfree(device); + return ret; + } +@@ -1623,6 +1843,7 @@ void __exit omap_rsz_exit(void) + platform_driver_unregister(&omap_resizer_driver); + cdev_del(&c_dev); + unregister_chrdev_region(dev, 1); ++ free_pages((unsigned long)device_config->extra_page_addr, 0); + kfree(device_config); + } + +diff --git a/include/linux/omap_resizer.h b/include/linux/omap_resizer.h +index 5ac0c88..47b8dd8 100644 +--- a/include/linux/omap_resizer.h ++++ b/include/linux/omap_resizer.h +@@ -21,7 +21,7 @@ + + /* ioctls definition */ + #define RSZ_IOC_BASE 'R' +-#define RSZ_IOC_MAXNR 8 ++#define RSZ_IOC_MAXNR 9 + + /*Ioctl options which are to be passed while calling the ioctl*/ + #define RSZ_REQBUF _IOWR(RSZ_IOC_BASE, 1,\ +@@ -33,6 +33,7 @@ + #define RSZ_G_STATUS _IOWR(RSZ_IOC_BASE, 6, struct rsz_status) + #define RSZ_QUEUEBUF _IOWR(RSZ_IOC_BASE, 7, struct v4l2_buffer) + #define RSZ_GET_CROPSIZE _IOWR(RSZ_IOC_BASE, 8, struct rsz_cropsize) ++#define RSZ_S_EXP _IOWR(RSZ_IOC_BASE, 9, __s32) + + #define RSZ_INTYPE_YCBCR422_16BIT 0 + #define RSZ_INTYPE_PLANAR_8BIT 1 +-- +1.6.0.3 + |