/**
* isph3a_aewb_configure - Configure AEWB regs, enable/disable H3A engine.
* @aewbcfg: Pointer to AEWB config structure.
*
* Returns 0 if successful, -EINVAL if aewbcfg pointer is NULL, -ENOMEM if
* was unable to allocate memory for the buffer, of other errors if H3A
* callback is not set or the parameters for AEWB are invalid.
**/
int isph3a_aewb_configure(struct isp_h3a_device *isp_h3a,
struct isph3a_aewb_config *aewbcfg)
{
int ret = 0;
int win_count = 0;
unsigned int buf_size;
unsigned long irqflags;
struct ispstat_buffer *buf;
if (NULL == aewbcfg) {
dev_info(isp_h3a->dev, "h3a: Null argument in configuration\n");
return -EINVAL;
}
ret = isph3a_aewb_validate_params(isp_h3a, aewbcfg);
if (ret)
return ret;
/* FIXME: This win_count handling looks really fishy. */
win_count = aewbcfg->ver_win_count * aewbcfg->hor_win_count;
win_count += aewbcfg->hor_win_count;
ret = win_count / 8;
win_count += win_count % 8 ? 1 : 0;
win_count += ret;
buf_size = win_count * AEWB_PACKET_SIZE;
ret = ispstat_bufs_alloc(&isp_h3a->stat, buf_size);
if (ret)
return ret;
buf = ispstat_buf_next(&isp_h3a->stat);
spin_lock_irqsave(isp_h3a->lock, irqflags);
isp_h3a->win_count = win_count;
isph3a_aewb_set_params(isp_h3a, aewbcfg);
isp_reg_writel(isp_h3a->dev, buf->iommu_addr,
OMAP3_ISP_IOMEM_H3A, ISPH3A_AEWBUFST);
spin_unlock_irqrestore(isp_h3a->lock, irqflags);
isph3a_aewb_enable(isp_h3a, aewbcfg->aewb_enable);
isph3a_print_status(isp_h3a);
return 0;
}
/**
* isph3a_aewb_config - Configure AEWB regs, enable/disable H3A engine.
* @aewbcfg: Pointer to AEWB config structure.
*
* Returns 0 if successful, -EINVAL if aewbcfg pointer is NULL, -ENOMEM if
* was unable to allocate memory for the buffer, of other errors if H3A
* callback is not set or the parameters for AEWB are invalid.
**/
int isph3a_aewb_config(struct isp_h3a_device *isp_h3a,
struct isph3a_aewb_config *aewbcfg)
{
struct device *dev = to_device(isp_h3a);
int ret = 0;
int win_count = 0;
unsigned int buf_size;
unsigned long irqflags;
if (NULL == aewbcfg) {
dev_dbg(dev, "h3a: Null argument in configuration\n");
return -EINVAL;
}
ret = isph3a_aewb_validate_params(isp_h3a, aewbcfg);
if (ret)
return ret;
/* FIXME: This win_count handling looks really fishy. */
win_count = aewbcfg->ver_win_count * aewbcfg->hor_win_count;
win_count += aewbcfg->hor_win_count;
ret = win_count / 8;
win_count += win_count % 8 ? 1 : 0;
win_count += ret;
buf_size = win_count * AEWB_PACKET_SIZE;
ret = ispstat_bufs_alloc(&isp_h3a->stat, buf_size, 0);
if (ret)
return ret;
spin_lock_irqsave(isp_h3a->lock, irqflags);
isp_h3a->win_count = win_count;
isph3a_aewb_set_params(isp_h3a, aewbcfg);
spin_unlock_irqrestore(isp_h3a->lock, irqflags);
return 0;
}
/* Function to perform hardware set up */
int isp_af_config(struct isp_af_device *isp_af,
struct af_configuration *afconfig)
{
struct device *dev = to_device(isp_af);
int result;
int buf_size;
unsigned long irqflags;
if (!afconfig) {
dev_dbg(dev, "af: Null argument in configuration.\n");
return -EINVAL;
}
/* Check Parameters */
spin_lock_irqsave(isp_af->lock, irqflags);
result = isp_af_check_params(isp_af, afconfig);
spin_unlock_irqrestore(isp_af->lock, irqflags);
if (result) {
dev_dbg(dev, "af: wrong configure params received.\n");
return result;
}
/* Compute buffer size */
buf_size = (afconfig->paxel_config.hz_cnt + 1) *
(afconfig->paxel_config.vt_cnt + 1) * AF_PAXEL_SIZE;
result = ispstat_bufs_alloc(&isp_af->stat, buf_size, 0);
if (result)
return result;
spin_lock_irqsave(isp_af->lock, irqflags);
isp_af->buf_size = buf_size;
isp_af_update_params(isp_af, afconfig);
spin_unlock_irqrestore(isp_af->lock, irqflags);
/* Success */
return 0;
}
/*
* ispstat_config - Receives new statistic engine configuration.
* @new_conf: Pointer to config structure.
*
* Returns 0 if successful, -EINVAL if new_conf pointer is NULL, -ENOMEM if
* was unable to allocate memory for the buffer, or other errors if parameters
* are invalid.
*/
int ispstat_config(struct ispstat *stat, void *new_conf)
{
int ret;
unsigned long irqflags;
struct ispstat_generic_config *user_cfg = new_conf;
u32 buf_size = user_cfg->buf_size;
if (!new_conf) {
dev_dbg(stat->isp->dev, "%s: configuration is NULL\n",
stat->subdev.name);
return -EINVAL;
}
mutex_lock(&stat->ioctl_lock);
dev_dbg(stat->isp->dev, "%s: configuring module with buffer "
"size=0x%08lx\n", stat->subdev.name, (unsigned long)buf_size);
ret = stat->ops->validate_params(stat, new_conf);
if (ret) {
mutex_unlock(&stat->ioctl_lock);
dev_dbg(stat->isp->dev, "%s: configuration values are "
"invalid.\n", stat->subdev.name);
return ret;
}
if (buf_size != user_cfg->buf_size)
dev_dbg(stat->isp->dev, "%s: driver has corrected buffer size "
"request to 0x%08lx\n", stat->subdev.name,
(unsigned long)user_cfg->buf_size);
/*
* Hack: H3A modules may need a doubled buffer size to avoid access
* to a invalid memory address after a SBL overflow.
* The buffer size is always PAGE_ALIGNED.
* Hack 2: MAGIC_SIZE is added to buf_size so a magic word can be
* inserted at the end to data integrity check purpose.
* Hack 3: AF module writes one paxel data more than it should, so
* the buffer allocation must consider it to avoid invalid memory
* access.
*/
if (IS_H3A_AEWB(stat))
buf_size = PAGE_ALIGN(user_cfg->buf_size * 2 + MAGIC_SIZE);
else if (IS_H3A_AF(stat))
buf_size = PAGE_ALIGN(user_cfg->buf_size * 2 + MAGIC_SIZE +
AF_EXTRA_DATA);
else
buf_size = PAGE_ALIGN(user_cfg->buf_size + MAGIC_SIZE);
ret = ispstat_bufs_alloc(stat, buf_size);
if (ret) {
mutex_unlock(&stat->ioctl_lock);
return ret;
}
spin_lock_irqsave(&stat->isp->stat_lock, irqflags);
stat->ops->set_params(stat, new_conf);
spin_unlock_irqrestore(&stat->isp->stat_lock, irqflags);
/*
* Returning the right future config_counter for this setup, so
* userspace can *know* when it has been applied.
*/
user_cfg->config_counter = stat->config_counter + stat->inc_config;
/* Module has a valid configuration. */
stat->configured = 1;
dev_dbg(stat->isp->dev, "%s: module has been successfully "
"configured.\n", stat->subdev.name);
mutex_unlock(&stat->ioctl_lock);
return 0;
}
