static void disp_aal_set_interrupt(int enabled)
{
#ifdef CONFIG_MTK_AAL_SUPPORT
if (enabled) {
if (DISP_REG_GET(DISP_AAL_EN) == 0) {
AAL_DBG("[WARNING] DISP_AAL_EN not enabled!");
}
/* Enable output frame end interrupt */
DISP_CPU_REG_SET(DISP_AAL_INTEN, 0x2);
AAL_DBG("Interrupt enabled");
} else {
if (g_aal_dirty_frame_retrieved) {
DISP_CPU_REG_SET(DISP_AAL_INTEN, 0x0);
AAL_DBG("Interrupt disabled");
} else { /* Dirty histogram was not retrieved */
/* Only if the dirty hist was retrieved, interrupt can be disabled.
Continue interrupt until AALService can get the latest histogram. */
}
}
#else
AAL_ERR("AAL driver is not enabled");
#endif
}
static int disp_aal_wait_hist(unsigned long timeout)
{
int ret = 0;
AAL_DBG("disp_aal_wait_hist: available = %d", g_aal_hist_available);
if (!g_aal_hist_available) {
ret = wait_event_interruptible(g_aal_hist_wq, (g_aal_hist_available != 0));
AAL_DBG("disp_aal_wait_hist: waken up, ret = %d", ret);
} else {
/* If g_aal_hist_available is already set, means AALService was delayed */
}
return ret;
}
static int aal_config(DISP_MODULE_ENUM module, disp_ddp_path_config *pConfig, void *cmdq)
{
if (pConfig->dst_dirty) {
int width, height;
width = pConfig->dst_w;
height = pConfig->dst_h;
DISP_REG_SET(cmdq, DISP_AAL_SIZE, (width << 16) | height);
DISP_REG_MASK(cmdq, DISP_AAL_CFG, 0x0, 0x1); /* Disable relay mode */
disp_aal_init(module, width, height, cmdq);
DISP_REG_MASK(cmdq, DISP_AAL_EN, 0x1, 0x1);
AAL_DBG("AAL_CFG = 0x%x, AAL_SIZE = 0x%x(%d, %d)",
DISP_REG_GET(DISP_AAL_CFG), DISP_REG_GET(DISP_AAL_SIZE), width, height);
}
if (pConfig->ovl_dirty || pConfig->rdma_dirty) {
disp_aal_notify_frame_dirty();
}
return 0;
}
int disp_aal_set_param(DISP_AAL_PARAM __user *param, void *cmdq)
{
int ret = -EFAULT;
int backlight_value = 0;
/* Not need to protect g_aal_param, since only AALService
can set AAL parameters. */
if (copy_from_user(&g_aal_param, param, sizeof(DISP_AAL_PARAM)) == 0) {
ret = disp_aal_write_param_to_reg(cmdq, &g_aal_param);
backlight_value = g_aal_param.FinalBacklight;
}
if (g_aal_backlight_notified == 0)
backlight_value = 0;
if (ret == 0) {
ret |= disp_pwm_set_backlight_cmdq(DISP_PWM0, backlight_value, cmdq);
}
AAL_DBG("disp_aal_set_param(CABC = %d, DRE[0,8] = %d,%d): ret = %d",
g_aal_param.cabc_fltgain_force, g_aal_param.DREGainFltStatus[0],
g_aal_param.DREGainFltStatus[8], ret);
backlight_brightness_set(backlight_value);
disp_aal_trigger_refresh();
return ret;
}
int disp_aal_write_init_regs(void *cmdq)
{
int ret = -EFAULT;
if (g_aal_is_init_regs_valid) {
DISP_AAL_INITREG *init_regs = &g_aal_init_regs;
int i, j;
int *gain;
DISP_REG_MASK(cmdq, DISP_AAL_DRE_MAPPING_00, (init_regs->dre_map_bypass << 4),
1 << 4);
gain = init_regs->cabc_gainlmt;
j = 0;
for (i = 0; i <= 10; i++) {
DISP_REG_SET(cmdq, DISP_AAL_CABC_GAINLMT_TBL(i),
CABC_GAINLMT(gain[j], gain[j + 1], gain[j + 2]));
j += 3;
}
AAL_DBG("disp_aal_write_init_regs: done");
ret = 0;
}
return ret;
}
static int disp_aal_set_init_reg(DISP_AAL_INITREG __user *user_regs, void *cmdq)
{
int ret = -EFAULT;
DISP_AAL_INITREG *init_regs;
init_regs = (DISP_AAL_INITREG*)kmalloc(sizeof(DISP_AAL_INITREG), GFP_KERNEL);
if (init_regs == NULL) {
AAL_ERR("disp_aal_set_init_reg: insufficient memory");
return -EFAULT;
}
ret = copy_from_user(init_regs, user_regs, sizeof(DISP_AAL_INITREG));
if (ret == 0) {
int i, j;
int *gain;
DISP_REG_MASK(cmdq, DISP_AAL_DRE_MAPPING_00, (init_regs->dre_map_bypass << 4), 1 << 4);
gain = init_regs->cabc_gainlmt;
j = 0;
for (i = 0; i <= 10; i++) {
DISP_REG_SET(cmdq, DISP_AAL_CABC_GAINLMT_TBL(i),
CABC_GAINLMT(gain[j], gain[j + 1], gain[j + 2]));
j += 3;
}
} else {
AAL_ERR("disp_aal_set_init_reg: copy_from_user() failed");
}
AAL_DBG("disp_aal_set_init_reg: %d", ret);
kfree(init_regs);
return ret;
}
void disp_aal_on_end_of_frame(void)
{
unsigned int intsta;
int i;
unsigned long flags;
intsta = DISP_REG_GET(DISP_AAL_INTSTA);
AAL_DBG("disp_aal_on_end_of_frame: intsta: 0x%x", intsta);
if (intsta & 0x2) { /* End of frame */
if (spin_trylock_irqsave(&g_aal_hist_lock, flags)) {
DISP_CPU_REG_SET(DISP_AAL_INTSTA, (intsta & ~0x3));
for (i = 0; i < AAL_HIST_BIN; i++) {
g_aal_hist.maxHist[i] = DISP_REG_GET(DISP_AAL_STATUS_00 + (i << 2));
}
g_aal_hist_available = 1;
/* Allow to disable interrupt */
g_aal_dirty_frame_retrieved = 1;
spin_unlock_irqrestore(&g_aal_hist_lock, flags);
wake_up_interruptible(&g_aal_hist_wq);
} else {
/*
* Histogram was not be retrieved, but it's OK.
* Another interrupt will come until histogram available
* See: disp_aal_set_interrupt()
*/
}
}
}
int aal_bypass(DISP_MODULE_ENUM module, int bypass)
{
int relay = 0;
if (bypass)
relay = 1;
DISP_REG_MASK(NULL, DISP_AAL_CFG, relay, 0x1);
AAL_DBG("aal_bypass(bypass = %d)", bypass);
return 0;
}
static void disp_aal_notify_frame_dirty(void)
{
#ifdef MTK_AAL_SUPPORT
unsigned long flags;
AAL_DBG("disp_aal_notify_frame_dirty()");
spin_lock_irqsave(&g_aal_hist_lock, flags);
/* Interrupt can be disabled until dirty histogram is retrieved */
g_aal_dirty_frame_retrieved = 0;
spin_unlock_irqrestore(&g_aal_hist_lock, flags);
disp_aal_set_interrupt(1);
#endif
}
void disp_aal_on_end_of_frame(void)
{
#ifdef CONFIG_MTK_AAL_SUPPORT
unsigned int intsta;
int i;
unsigned long flags;
intsta = DISP_REG_GET(DISP_AAL_INTSTA);
AAL_DBG("disp_aal_on_end_of_frame: intsta: 0x%x", intsta);
if (intsta & 0x2) { /* End of frame */
if (spin_trylock_irqsave(&g_aal_hist_lock, flags)) {
DISP_CPU_REG_SET(DISP_AAL_INTSTA, (intsta & ~0x3));
for (i = 0; i < AAL_HIST_BIN; i++) {
g_aal_hist.maxHist[i] = DISP_REG_GET(DISP_AAL_STATUS_00 + (i << 2));
}
g_aal_hist_available = 1;
/* Allow to disable interrupt */
g_aal_dirty_frame_retrieved = 1;
spin_unlock_irqrestore(&g_aal_hist_lock, flags);
if (!g_aal_is_init_regs_valid) {
/*
* AAL service is not running, not need per-frame wakeup.
* We stop interrupt until next frame dirty.
*/
disp_aal_set_interrupt(0);
}
wake_up_interruptible(&g_aal_hist_wq);
} else {
/*
* Histogram was not be retrieved, but it's OK.
* Another interrupt will come until histogram available
* See: disp_aal_set_interrupt()
*/
}
}
#else
/*
* We will not wake up AAL unless signals
*/
#endif
}
static int disp_aal_copy_hist_to_user(DISP_AAL_HIST __user *hist)
{
unsigned long flags;
int ret = -EFAULT;
/* We assume only one thread will call this function */
spin_lock_irqsave(&g_aal_hist_lock, flags);
memcpy(&g_aal_hist_db, &g_aal_hist, sizeof(DISP_AAL_HIST));
g_aal_hist_available = 0;
spin_unlock_irqrestore(&g_aal_hist_lock, flags);
if (copy_to_user(hist, &g_aal_hist_db, sizeof(DISP_AAL_HIST)) == 0) {
ret = 0;
}
AAL_DBG("disp_aal_copy_hist_to_user: %d", ret);
return ret;
}
static int disp_aal_set_init_reg(DISP_AAL_INITREG __user *user_regs, void *cmdq)
{
int ret = -EFAULT;
#ifdef CONFIG_MTK_AAL_SUPPORT
DISP_AAL_INITREG *init_regs;
init_regs = &g_aal_init_regs;
ret = copy_from_user(init_regs, user_regs, sizeof(DISP_AAL_INITREG));
if (ret == 0) {
g_aal_is_init_regs_valid = 1;
ret = disp_aal_write_init_regs(cmdq);
} else {
AAL_ERR("disp_aal_set_init_reg: copy_from_user() failed");
}
AAL_DBG("disp_aal_set_init_reg: %d", ret);
#else
AAL_ERR("disp_aal_set_init_reg: AAL not supported");
#endif
return ret;
}
static int aal_clock_off(DISP_MODULE_ENUM module, void *cmq_handle)
{
AAL_DBG("aal_clock_off");
disable_clock(MT_CG_DISP0_DISP_AAL, "aal");
return 0;
}
static int aal_clock_on(DISP_MODULE_ENUM module, void *cmq_handle)
{
enable_clock(MT_CG_DISP0_DISP_AAL, "aal");
AAL_DBG("aal_clock_on CG 0x%x", DISP_REG_GET(DISP_REG_CONFIG_MMSYS_CG_CON0));
return 0;
}