int s5p_mfc_clock_on(struct s5p_mfc_dev *dev)
{
int ret = 0;
int state, val;
unsigned long flags;
dev->pm.clock_on_steps = 1;
MFC_TRACE_DEV("++ clock_on: Set clock rate(%d)\n", dev->curr_rate);
ret = clk_enable(dev->pm.clock);
if (ret < 0)
return ret;
if (dev->pm.base_type != MFCBUF_INVALID)
s5p_mfc_init_memctrl(dev, dev->pm.base_type);
dev->pm.clock_on_steps |= 0x1 << 1;
if (dev->curr_ctx_drm && dev->is_support_smc) {
spin_lock_irqsave(&dev->pm.clklock, flags);
mfc_debug(3, "Begin: enable protection\n");
ret = exynos_smc(SMC_PROTECTION_SET, 0,
dev->id, SMC_PROTECTION_ENABLE);
dev->pm.clock_on_steps |= 0x1 << 2;
if (!ret) {
printk("Protection Enable failed! ret(%u)\n", ret);
spin_unlock_irqrestore(&dev->pm.clklock, flags);
clk_disable(dev->pm.clock);
return -EACCES;
}
mfc_debug(3, "End: enable protection\n");
spin_unlock_irqrestore(&dev->pm.clklock, flags);
} else {
ret = s5p_mfc_mem_resume(dev->alloc_ctx[0]);
if (ret < 0) {
dev->pm.clock_on_steps |= 0x1 << 3;
clk_disable(dev->pm.clock);
return ret;
}
}
dev->pm.clock_on_steps |= 0x1 << 4;
if (IS_MFCV6(dev)) {
spin_lock_irqsave(&dev->pm.clklock, flags);
if ((atomic_inc_return(&dev->clk_ref) == 1) &&
FW_HAS_BUS_RESET(dev)) {
val = s5p_mfc_read_reg(dev, S5P_FIMV_MFC_BUS_RESET_CTRL);
val &= ~(0x1);
s5p_mfc_write_reg(dev, val, S5P_FIMV_MFC_BUS_RESET_CTRL);
}
spin_unlock_irqrestore(&dev->pm.clklock, flags);
} else {
atomic_inc_return(&dev->clk_ref);
}
dev->pm.clock_on_steps |= 0x1 << 5;
state = atomic_read(&dev->clk_ref);
mfc_debug(2, "+ %d\n", state);
MFC_TRACE_DEV("-- clock_on : ref state(%d)\n", state);
return 0;
}
int s5p_mfc_clock_on(struct s5p_mfc_dev *dev)
{
int ret = 0;
int state, val;
unsigned long flags;
#ifdef CONFIG_MFC_USE_BUS_DEVFREQ
MFC_TRACE_DEV("++ clock_on: Set clock rate(%d)\n", dev->curr_rate);
mutex_lock(&dev->curr_rate_lock);
s5p_mfc_clock_set_rate(dev, dev->curr_rate);
mutex_unlock(&dev->curr_rate_lock);
#endif
ret = clk_enable(dev->pm.clock);
if (ret < 0)
return ret;
if (dev->curr_ctx_drm && dev->is_support_smc) {
spin_lock_irqsave(&dev->pm.clklock, flags);
mfc_debug(3, "Begin: enable protection\n");
ret = exynos_smc(SMC_PROTECTION_SET, 0,
dev->id, SMC_PROTECTION_ENABLE);
if (!ret) {
printk("Protection Enable failed! ret(%u)\n", ret);
spin_unlock_irqrestore(&dev->pm.clklock, flags);
clk_disable(dev->pm.clock);
return ret;
}
mfc_debug(3, "End: enable protection\n");
spin_unlock_irqrestore(&dev->pm.clklock, flags);
} else {
ret = s5p_mfc_mem_resume(dev->alloc_ctx[0]);
if (ret < 0) {
clk_disable(dev->pm.clock);
return ret;
}
}
if (IS_MFCV6(dev)) {
spin_lock_irqsave(&dev->pm.clklock, flags);
if ((atomic_inc_return(&dev->clk_ref) == 1) &&
FW_HAS_BUS_RESET(dev)) {
val = s5p_mfc_read_reg(dev, S5P_FIMV_MFC_BUS_RESET_CTRL);
val &= ~(0x1);
s5p_mfc_write_reg(dev, val, S5P_FIMV_MFC_BUS_RESET_CTRL);
}
spin_unlock_irqrestore(&dev->pm.clklock, flags);
} else {
atomic_inc_return(&dev->clk_ref);
}
state = atomic_read(&dev->clk_ref);
mfc_debug(2, "+ %d\n", state);
MFC_TRACE_DEV("-- clock_on : ref state(%d)\n", state);
return 0;
}
void s5p_mfc_clock_off(struct s5p_mfc_dev *dev)
{
int state, val;
unsigned long timeout, flags;
int ret = 0;
if (IS_MFCV6(dev)) {
spin_lock_irqsave(&dev->pm.clklock, flags);
if ((atomic_dec_return(&dev->clk_ref) == 0) &&
FW_HAS_BUS_RESET(dev)) {
s5p_mfc_write_reg(dev, 0x1, S5P_FIMV_MFC_BUS_RESET_CTRL);
timeout = jiffies + msecs_to_jiffies(MFC_BW_TIMEOUT);
/* Check bus status */
do {
if (time_after(jiffies, timeout)) {
mfc_err_dev("Timeout while resetting MFC.\n");
break;
}
val = s5p_mfc_read_reg(dev,
S5P_FIMV_MFC_BUS_RESET_CTRL);
} while ((val & 0x2) == 0);
}
spin_unlock_irqrestore(&dev->pm.clklock, flags);
} else {
atomic_dec_return(&dev->clk_ref);
}
state = atomic_read(&dev->clk_ref);
if (state < 0) {
mfc_err_dev("Clock state is wrong(%d)\n", state);
atomic_set(&dev->clk_ref, 0);
} else {
if (dev->curr_ctx_drm && dev->is_support_smc) {
mfc_debug(3, "Begin: disable protection\n");
spin_lock_irqsave(&dev->pm.clklock, flags);
ret = exynos_smc(SMC_PROTECTION_SET, 0,
dev->id, SMC_PROTECTION_DISABLE);
if (!ret) {
printk("Protection Disable failed! ret(%u)\n", ret);
spin_unlock_irqrestore(&dev->pm.clklock, flags);
clk_disable(dev->pm.clock);
return;
}
mfc_debug(3, "End: disable protection\n");
spin_unlock_irqrestore(&dev->pm.clklock, flags);
} else {
s5p_mfc_mem_suspend(dev->alloc_ctx[0]);
}
clk_disable(dev->pm.clock);
}
mfc_debug(2, "- %d\n", state);
}
int s5p_mfc_clock_on(void)
{
int ret = 0;
int state, val;
struct s5p_mfc_dev *dev = platform_get_drvdata(to_platform_device(pm->device));
unsigned long flags;
#ifdef CONFIG_ARM_EXYNOS5410_BUS_DEVFREQ
s5p_mfc_clock_set_rate(dev, dev->curr_rate);
#endif
ret = clk_enable(pm->clock);
if (ret < 0)
return ret;
if (!dev->curr_ctx_drm) {
ret = s5p_mfc_mem_resume(dev->alloc_ctx[0]);
if (ret < 0) {
clk_disable(pm->clock);
return ret;
}
}
if (IS_MFCV6(dev)) {
spin_lock_irqsave(&pm->clklock, flags);
if ((atomic_inc_return(&clk_ref) == 1) &&
FW_HAS_BUS_RESET(dev)) {
val = s5p_mfc_read_reg(S5P_FIMV_MFC_BUS_RESET_CTRL);
val &= ~(0x1);
s5p_mfc_write_reg(val, S5P_FIMV_MFC_BUS_RESET_CTRL);
}
spin_unlock_irqrestore(&pm->clklock, flags);
} else {
atomic_inc_return(&clk_ref);
}
state = atomic_read(&clk_ref);
mfc_debug(3, "+ %d", state);
return 0;
}
void s5p_mfc_clock_off(void)
{
int state, val;
unsigned long timeout, flags;
struct s5p_mfc_dev *dev = platform_get_drvdata(to_platform_device(pm->device));
if (IS_MFCV6(dev)) {
spin_lock_irqsave(&pm->clklock, flags);
if ((atomic_dec_return(&clk_ref) == 0) &&
FW_HAS_BUS_RESET(dev)) {
s5p_mfc_write_reg(0x1, S5P_FIMV_MFC_BUS_RESET_CTRL);
timeout = jiffies + msecs_to_jiffies(MFC_BW_TIMEOUT);
/* Check bus status */
do {
if (time_after(jiffies, timeout)) {
mfc_err("Timeout while resetting MFC.\n");
break;
}
val = s5p_mfc_read_reg(
S5P_FIMV_MFC_BUS_RESET_CTRL);
} while ((val & 0x2) == 0);
}
spin_unlock_irqrestore(&pm->clklock, flags);
} else {
atomic_dec_return(&clk_ref);
}
state = atomic_read(&clk_ref);
if (state < 0) {
mfc_err("Clock state is wrong(%d)\n", state);
atomic_set(&clk_ref, 0);
} else {
if (!dev->curr_ctx_drm)
s5p_mfc_mem_suspend(dev->alloc_ctx[0]);
clk_disable(pm->clock);
}
}
