static void
preview_update_contrast(struct isp_prev_device *prev, u8 contrast)
{
- struct prev_params *params = &prev->params;
+ struct prev_params *params;
+ unsigned long flags;
+
+ spin_lock_irqsave(&prev->params.lock, flags);
+ params = (prev->params.active & OMAP3ISP_PREV_CONTRAST)
+ ? &prev->params.params[0] : &prev->params.params[1];
if (params->contrast != (contrast * ISPPRV_CONTRAST_UNITS)) {
params->contrast = contrast * ISPPRV_CONTRAST_UNITS;
- prev->update |= OMAP3ISP_PREV_CONTRAST;
+ params->update |= OMAP3ISP_PREV_CONTRAST;
}
+ spin_unlock_irqrestore(&prev->params.lock, flags);
}
/*
static void
preview_update_brightness(struct isp_prev_device *prev, u8 brightness)
{
- struct prev_params *params = &prev->params;
+ struct prev_params *params;
+ unsigned long flags;
+
+ spin_lock_irqsave(&prev->params.lock, flags);
+ params = (prev->params.active & OMAP3ISP_PREV_BRIGHTNESS)
+ ? &prev->params.params[0] : &prev->params.params[1];
if (params->brightness != (brightness * ISPPRV_BRIGHT_UNITS)) {
params->brightness = brightness * ISPPRV_BRIGHT_UNITS;
- prev->update |= OMAP3ISP_PREV_BRIGHTNESS;
+ params->update |= OMAP3ISP_PREV_BRIGHTNESS;
}
+ spin_unlock_irqrestore(&prev->params.lock, flags);
}
/*
OMAP3_ISP_IOMEM_PREV, ISPPRV_SETUP_YC);
}
+static u32
+preview_params_lock(struct isp_prev_device *prev, u32 update, bool shadow)
+{
+ u32 active = prev->params.active;
+
+ if (shadow) {
+ /* Mark all shadow parameters we are going to touch as busy. */
+ prev->params.params[0].busy |= ~active & update;
+ prev->params.params[1].busy |= active & update;
+ } else {
+ /* Mark all active parameters we are going to touch as busy. */
+ update = (prev->params.params[0].update & active)
+ | (prev->params.params[1].update & ~active);
+
+ prev->params.params[0].busy |= active & update;
+ prev->params.params[1].busy |= ~active & update;
+ }
+
+ return update;
+}
+
+static void
+preview_params_unlock(struct isp_prev_device *prev, u32 update, bool shadow)
+{
+ u32 active = prev->params.active;
+
+ if (shadow) {
+ /* Set the update flag for shadow parameters that have been
+ * updated and clear the busy flag for all shadow parameters.
+ */
+ prev->params.params[0].update |= (~active & update);
+ prev->params.params[1].update |= (active & update);
+ prev->params.params[0].busy &= active;
+ prev->params.params[1].busy &= ~active;
+ } else {
+ /* Clear the update flag for active parameters that have been
+ * applied and the busy flag for all active parameters.
+ */
+ prev->params.params[0].update &= ~(active & update);
+ prev->params.params[1].update &= ~(~active & update);
+ prev->params.params[0].busy &= ~active;
+ prev->params.params[1].busy &= active;
+ }
+}
+
+static void preview_params_switch(struct isp_prev_device *prev)
+{
+ u32 to_switch;
+
+ /* Switch active parameters with updated shadow parameters when the
+ * shadow parameter has been updated and neither the active not the
+ * shadow parameter is busy.
+ */
+ to_switch = (prev->params.params[0].update & ~prev->params.active)
+ | (prev->params.params[1].update & prev->params.active);
+ to_switch &= ~(prev->params.params[0].busy |
+ prev->params.params[1].busy);
+ if (to_switch == 0)
+ return;
+
+ prev->params.active ^= to_switch;
+
+ /* Remove the update flag for the shadow copy of parameters we have
+ * switched.
+ */
+ prev->params.params[0].update &= ~(~prev->params.active & to_switch);
+ prev->params.params[1].update &= ~(prev->params.active & to_switch);
+}
+
/* preview parameters update structure */
struct preview_update {
void (*config)(struct isp_prev_device *, const void *);
},
};
-/*
- * __preview_get_ptrs - helper function which return pointers to members
- * of params and config structures.
- * @params - pointer to preview_params structure.
- * @param - return pointer to appropriate structure field.
- * @configs - pointer to update config structure.
- * @config - return pointer to appropriate structure field.
- * @bit - for which feature to return pointers.
- * Return size of corresponding prev_params member
- */
-static u32
-__preview_get_ptrs(struct prev_params *params, void **param,
- struct omap3isp_prev_update_config *configs,
- void __user **config, unsigned int index)
-{
- const struct preview_update *info = &update_attrs[index];
-
- if (index >= ARRAY_SIZE(update_attrs)) {
- if (config)
- *config = NULL;
- *param = NULL;
- return 0;
- }
-
- if (configs && config)
- *config = *(void **)((void *)configs + info->config_offset);
-
- *param = (void *)params + info->param_offset;
- return info->param_size;
-}
-
/*
* preview_config - Copy and update local structure with userspace preview
* configuration.
static int preview_config(struct isp_prev_device *prev,
struct omap3isp_prev_update_config *cfg)
{
- const struct preview_update *attr;
- struct prev_params *params;
- int i, bit, rval = 0;
+ unsigned long flags;
+ unsigned int i;
+ int rval = 0;
+ u32 update;
+ u32 active;
if (cfg->update == 0)
return 0;
- params = &prev->params;
+ /* Mark the shadow parameters we're going to update as busy. */
+ spin_lock_irqsave(&prev->params.lock, flags);
+ preview_params_lock(prev, cfg->update, true);
+ active = prev->params.active;
+ spin_unlock_irqrestore(&prev->params.lock, flags);
- if (prev->state != ISP_PIPELINE_STREAM_STOPPED) {
- unsigned long flags;
-
- spin_lock_irqsave(&prev->lock, flags);
- prev->shadow_update = 1;
- spin_unlock_irqrestore(&prev->lock, flags);
- }
+ update = 0;
for (i = 0; i < ARRAY_SIZE(update_attrs); i++) {
- attr = &update_attrs[i];
- bit = 1 << i;
+ const struct preview_update *attr = &update_attrs[i];
+ struct prev_params *params;
+ unsigned int bit = 1 << i;
if (attr->skip || !(cfg->update & bit))
continue;
+ params = &prev->params.params[!!(active & bit)];
+
if (cfg->flag & bit) {
- void *to = NULL, __user *from = NULL;
- unsigned long sz = 0;
+ void __user *from = *(void * __user *)
+ ((void *)cfg + attr->config_offset);
+ void *to = (void *)params + attr->param_offset;
+ size_t size = attr->param_size;
- sz = __preview_get_ptrs(params, &to, cfg, &from, i);
- if (to && from && sz) {
- if (copy_from_user(to, from, sz)) {
+ if (to && from && size) {
+ if (copy_from_user(to, from, size)) {
rval = -EFAULT;
break;
}
params->features &= ~bit;
}
- prev->update |= bit;
+ update |= bit;
}
- prev->shadow_update = 0;
+ spin_lock_irqsave(&prev->params.lock, flags);
+ preview_params_unlock(prev, update, true);
+ preview_params_switch(prev);
+ spin_unlock_irqrestore(&prev->params.lock, flags);
+
return rval;
}
/*
* preview_setup_hw - Setup preview registers and/or internal memory
* @prev: pointer to preview private structure
+ * @update: Bitmask of parameters to setup
+ * @active: Bitmask of parameters active in set 0
* Note: can be called from interrupt context
* Return none
*/
-static void preview_setup_hw(struct isp_prev_device *prev)
+static void preview_setup_hw(struct isp_prev_device *prev, u32 update,
+ u32 active)
{
- struct prev_params *params = &prev->params;
- const struct preview_update *attr;
- unsigned int bit;
unsigned int i;
- void *param_ptr;
+ u32 features;
- if (prev->update == 0)
+ if (update == 0)
return;
+ features = (prev->params.params[0].features & active)
+ | (prev->params.params[1].features & ~active);
+
for (i = 0; i < ARRAY_SIZE(update_attrs); i++) {
- attr = &update_attrs[i];
- bit = 1 << i;
+ const struct preview_update *attr = &update_attrs[i];
+ struct prev_params *params;
+ unsigned int bit = 1 << i;
+ void *param_ptr;
- if (!(prev->update & bit))
+ if (!(update & bit))
continue;
+ params = &prev->params.params[!(active & bit)];
+
if (params->features & bit) {
if (attr->config) {
- __preview_get_ptrs(params, ¶m_ptr, NULL,
- NULL, i);
+ param_ptr = (void *)params + attr->param_offset;
attr->config(prev, param_ptr);
}
if (attr->enable)
attr->enable(prev, 1);
- } else
+ } else {
if (attr->enable)
attr->enable(prev, 0);
-
- prev->update &= ~bit;
+ }
}
}
static void preview_config_averager(struct isp_prev_device *prev, u8 average)
{
struct isp_device *isp = to_isp_device(prev);
+ struct prev_params *params;
int reg = 0;
- if (prev->params.cfa.format == OMAP3ISP_CFAFMT_BAYER)
+ params = (prev->params.active & OMAP3ISP_PREV_CFA)
+ ? &prev->params.params[0] : &prev->params.params[1];
+
+ if (params->cfa.format == OMAP3ISP_CFAFMT_BAYER)
reg = ISPPRV_AVE_EVENDIST_2 << ISPPRV_AVE_EVENDIST_SHIFT |
ISPPRV_AVE_ODDDIST_2 << ISPPRV_AVE_ODDDIST_SHIFT |
average;
- else if (prev->params.cfa.format == OMAP3ISP_CFAFMT_RGBFOVEON)
+ else if (params->cfa.format == OMAP3ISP_CFAFMT_RGBFOVEON)
reg = ISPPRV_AVE_EVENDIST_3 << ISPPRV_AVE_EVENDIST_SHIFT |
ISPPRV_AVE_ODDDIST_3 << ISPPRV_AVE_ODDDIST_SHIFT |
average;
*
* See the explanation at the PREV_MARGIN_* definitions for more details.
*/
-static void preview_config_input_size(struct isp_prev_device *prev)
+static void preview_config_input_size(struct isp_prev_device *prev, u32 active)
{
struct isp_device *isp = to_isp_device(prev);
- struct prev_params *params = &prev->params;
unsigned int sph = prev->crop.left;
unsigned int eph = prev->crop.left + prev->crop.width - 1;
unsigned int slv = prev->crop.top;
unsigned int elv = prev->crop.top + prev->crop.height - 1;
+ u32 features;
- if (params->features & OMAP3ISP_PREV_CFA) {
+ features = (prev->params.params[0].features & active)
+ | (prev->params.params[1].features & ~active);
+
+ if (features & OMAP3ISP_PREV_CFA) {
sph -= 2;
eph += 2;
slv -= 2;
elv += 2;
}
- if (params->features & (OMAP3ISP_PREV_DEFECT_COR | OMAP3ISP_PREV_NF)) {
+ if (features & (OMAP3ISP_PREV_DEFECT_COR | OMAP3ISP_PREV_NF)) {
sph -= 2;
eph += 2;
slv -= 2;
elv += 2;
}
- if (params->features & OMAP3ISP_PREV_HRZ_MED) {
+ if (features & OMAP3ISP_PREV_HRZ_MED) {
sph -= 2;
eph += 2;
}
- if (params->features & (OMAP3ISP_PREV_CHROMA_SUPP |
- OMAP3ISP_PREV_LUMAENH))
+ if (features & (OMAP3ISP_PREV_CHROMA_SUPP | OMAP3ISP_PREV_LUMAENH))
sph -= 2;
isp_reg_writel(isp, (sph << ISPPRV_HORZ_INFO_SPH_SHIFT) | eph,
*/
void omap3isp_preview_restore_context(struct isp_device *isp)
{
- isp->isp_prev.update = OMAP3ISP_PREV_FEATURES_END - 1;
- preview_setup_hw(&isp->isp_prev);
+ struct isp_prev_device *prev = &isp->isp_prev;
+ const u32 update = OMAP3ISP_PREV_FEATURES_END - 1;
+
+ prev->params.params[0].update = prev->params.active & update;
+ prev->params.params[1].update = ~prev->params.active & update;
+
+ preview_setup_hw(prev, update, prev->params.active);
+
+ prev->params.params[0].update = 0;
+ prev->params.params[1].update = 0;
}
/*
/*
* preview_init_params - init image processing parameters.
* @prev: pointer to previewer private structure
- * return none
*/
static void preview_init_params(struct isp_prev_device *prev)
{
- struct prev_params *params = &prev->params;
- int i = 0;
+ struct prev_params *params;
+ unsigned int i;
+
+ spin_lock_init(&prev->params.lock);
+
+ prev->params.active = ~0;
+ prev->params.params[0].busy = 0;
+ prev->params.params[0].update = OMAP3ISP_PREV_FEATURES_END - 1;
+ prev->params.params[1].busy = 0;
+ prev->params.params[1].update = 0;
+
+ params = &prev->params.params[0];
/* Init values */
params->contrast = ISPPRV_CONTRAST_DEF * ISPPRV_CONTRAST_UNITS;
| OMAP3ISP_PREV_RGB2RGB | OMAP3ISP_PREV_COLOR_CONV
| OMAP3ISP_PREV_WB | OMAP3ISP_PREV_BRIGHTNESS
| OMAP3ISP_PREV_CONTRAST;
-
- prev->update = OMAP3ISP_PREV_FEATURES_END - 1;
}
/*
{
struct isp_device *isp = to_isp_device(prev);
struct v4l2_mbus_framefmt *format;
+ unsigned long flags;
+ u32 update;
+ u32 active;
- preview_setup_hw(prev);
+ spin_lock_irqsave(&prev->params.lock, flags);
+ /* Mark all active parameters we are going to touch as busy. */
+ update = preview_params_lock(prev, 0, false);
+ active = prev->params.active;
+ spin_unlock_irqrestore(&prev->params.lock, flags);
+
+ preview_setup_hw(prev, update, active);
if (prev->output & PREVIEW_OUTPUT_MEMORY)
isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
preview_adjust_bandwidth(prev);
- preview_config_input_size(prev);
+ preview_config_input_size(prev, active);
if (prev->input == PREVIEW_INPUT_CCDC)
preview_config_inlineoffset(prev, 0);
preview_config_averager(prev, 0);
preview_config_ycpos(prev, format->code);
+
+ spin_lock_irqsave(&prev->params.lock, flags);
+ preview_params_unlock(prev, update, false);
+ spin_unlock_irqrestore(&prev->params.lock, flags);
}
/* -----------------------------------------------------------------------------
void omap3isp_preview_isr(struct isp_prev_device *prev)
{
unsigned long flags;
+ u32 update;
+ u32 active;
if (omap3isp_module_sync_is_stopping(&prev->wait, &prev->stopping))
return;
- spin_lock_irqsave(&prev->lock, flags);
- if (prev->shadow_update)
- goto done;
+ spin_lock_irqsave(&prev->params.lock, flags);
+ preview_params_switch(prev);
+ update = preview_params_lock(prev, 0, false);
+ active = prev->params.active;
+ spin_unlock_irqrestore(&prev->params.lock, flags);
- preview_setup_hw(prev);
- preview_config_input_size(prev);
-
-done:
- spin_unlock_irqrestore(&prev->lock, flags);
+ preview_setup_hw(prev, update, active);
+ preview_config_input_size(prev, active);
if (prev->input == PREVIEW_INPUT_MEMORY ||
prev->output & PREVIEW_OUTPUT_MEMORY)
preview_isr_buffer(prev);
else if (prev->state == ISP_PIPELINE_STREAM_CONTINUOUS)
preview_enable_oneshot(prev);
+
+ spin_lock_irqsave(&prev->params.lock, flags);
+ preview_params_unlock(prev, update, false);
+ spin_unlock_irqrestore(&prev->params.lock, flags);
}
/* -----------------------------------------------------------------------------
struct isp_video *video_out = &prev->video_out;
struct isp_device *isp = to_isp_device(prev);
struct device *dev = to_device(prev);
- unsigned long flags;
if (prev->state == ISP_PIPELINE_STREAM_STOPPED) {
if (enable == ISP_PIPELINE_STREAM_STOPPED)
if (omap3isp_module_sync_idle(&sd->entity, &prev->wait,
&prev->stopping))
dev_dbg(dev, "%s: stop timeout.\n", sd->name);
- spin_lock_irqsave(&prev->lock, flags);
omap3isp_sbl_disable(isp, OMAP3_ISP_SBL_PREVIEW_READ);
omap3isp_sbl_disable(isp, OMAP3_ISP_SBL_PREVIEW_WRITE);
omap3isp_subclk_disable(isp, OMAP3_ISP_SUBCLK_PREVIEW);
- spin_unlock_irqrestore(&prev->lock, flags);
isp_video_dmaqueue_flags_clr(video_out);
break;
}
}
/*
- * isp_preview_init - Previewer initialization.
+ * omap3isp_preview_init - Previewer initialization.
* @dev : Pointer to ISP device
* return -ENOMEM or zero on success
*/
{
struct isp_prev_device *prev = &isp->isp_prev;
- spin_lock_init(&prev->lock);
init_waitqueue_head(&prev->wait);
+
preview_init_params(prev);
return preview_init_entities(prev);
projects / users / griffoul / linux.git / commitdiff