static void wcd9xxx_irq_dispatch(struct wcd9xxx_core_resource *wcd9xxx_res,
struct intr_data *irqdata)
{
int irqbit = irqdata->intr_num;
if (!wcd9xxx_res->codec_reg_write) {
pr_err("%s: codec read/write callback not defined\n",
__func__);
return;
}
if (irqdata->clear_first) {
wcd9xxx_nested_irq_lock(wcd9xxx_res);
wcd9xxx_res->codec_reg_write(wcd9xxx_res,
WCD9XXX_A_INTR_CLEAR0 + BIT_BYTE(irqbit),
BYTE_BIT_MASK(irqbit));
if (wcd9xxx_get_intf_type() == WCD9XXX_INTERFACE_TYPE_I2C)
wcd9xxx_res->codec_reg_write(wcd9xxx_res,
WCD9XXX_A_INTR_MODE, 0x02);
handle_nested_irq(phyirq_to_virq(wcd9xxx_res, irqbit));
wcd9xxx_nested_irq_unlock(wcd9xxx_res);
} else {
wcd9xxx_nested_irq_lock(wcd9xxx_res);
handle_nested_irq(phyirq_to_virq(wcd9xxx_res, irqbit));
wcd9xxx_res->codec_reg_write(wcd9xxx_res,
WCD9XXX_A_INTR_CLEAR0 + BIT_BYTE(irqbit),
BYTE_BIT_MASK(irqbit));
if (wcd9xxx_get_intf_type() == WCD9XXX_INTERFACE_TYPE_I2C)
wcd9xxx_res->codec_reg_write(wcd9xxx_res,
WCD9XXX_A_INTR_MODE, 0x02);
wcd9xxx_nested_irq_unlock(wcd9xxx_res);
}
}
void wcd9xxx_spmi_disable_irq(int irq)
{
pr_debug("%s: irqno =%d\n", __func__, irq);
if ((irq >= 0) && (irq <= 7)) {
snd_soc_update_bits(map.codec,
MSM8X16_WCD_A_DIGITAL_INT_EN_SET,
(0x01 << (irq)), 0x00);
snd_soc_update_bits(map.codec,
MSM8X16_WCD_A_DIGITAL_INT_EN_CLR,
(0x01 << irq), (0x01 << irq));
}
if ((irq > 7) && (irq <= 15)) {
snd_soc_update_bits(map.codec,
MSM8X16_WCD_A_ANALOG_INT_EN_SET,
(0x01 << (irq - 8)), 0x00);
snd_soc_update_bits(map.codec,
MSM8X16_WCD_A_ANALOG_INT_EN_CLR,
(0x01 << (irq - 8)), (0x01 << (irq - 8)));
}
if (map.mask[BIT_BYTE(irq)] & (BYTE_BIT_MASK(irq)))
return;
map.mask[BIT_BYTE(irq)] |=
(BYTE_BIT_MASK(irq));
disable_irq_nosync(map.linuxirq[irq]);
}
static irqreturn_t wcd9xxx_irq_thread(int irq, void *data)
{
int ret;
int i;
struct wcd9xxx *wcd9xxx = data;
int num_irq_regs = wcd9xxx_num_irq_regs(wcd9xxx);
u8 status[num_irq_regs];
if (unlikely(wcd9xxx_lock_sleep(wcd9xxx) == false)) {
dev_err(wcd9xxx->dev, "Failed to hold suspend\n");
return IRQ_NONE;
}
ret = wcd9xxx_bulk_read(wcd9xxx, WCD9XXX_A_INTR_STATUS0,
num_irq_regs, status);
if (ret < 0) {
dev_err(wcd9xxx->dev, "Failed to read interrupt status: %d\n",
ret);
dev_err(wcd9xxx->dev, "Disable irq %d\n", wcd9xxx->irq);
disable_irq_wake(wcd9xxx->irq);
disable_irq_nosync(wcd9xxx->irq);
wcd9xxx_unlock_sleep(wcd9xxx);
return IRQ_NONE;
}
/* Apply masking */
for (i = 0; i < num_irq_regs; i++)
status[i] &= ~wcd9xxx->irq_masks_cur[i];
/* Find out which interrupt was triggered and call that interrupt's
* handler function
*/
if (status[BIT_BYTE(WCD9XXX_IRQ_SLIMBUS)] &
BYTE_BIT_MASK(WCD9XXX_IRQ_SLIMBUS))
wcd9xxx_irq_dispatch(wcd9xxx, WCD9XXX_IRQ_SLIMBUS);
/* Since codec has only one hardware irq line which is shared by
* codec's different internal interrupts, so it's possible master irq
* handler dispatches multiple nested irq handlers after breaking
* order. Dispatch MBHC interrupts order to follow MBHC state
* machine's order */
for (i = WCD9XXX_IRQ_MBHC_INSERTION;
i >= WCD9XXX_IRQ_MBHC_REMOVAL; i--) {
if (status[BIT_BYTE(i)] & BYTE_BIT_MASK(i))
wcd9xxx_irq_dispatch(wcd9xxx, i);
}
for (i = WCD9XXX_IRQ_BG_PRECHARGE; i < wcd9xxx->num_irqs; i++) {
if (status[BIT_BYTE(i)] & BYTE_BIT_MASK(i))
wcd9xxx_irq_dispatch(wcd9xxx, i);
}
wcd9xxx_unlock_sleep(wcd9xxx);
return IRQ_HANDLED;
}
static irqreturn_t wsa_irq_thread(int irq, void *data)
{
struct wsa_resource *wsa_res = data;
int i;
u8 status;
if (wsa_res == NULL) {
pr_err("%s: wsa_res is NULL\n", __func__);
return IRQ_HANDLED;
}
if (wsa_res->codec == NULL) {
pr_err("%s: codec pointer not registered\n", __func__);
if (ptr_codec == NULL) {
pr_err("%s: did not recieve valid codec pointer\n",
__func__);
return IRQ_HANDLED;
} else {
wsa_res->codec = ptr_codec;
}
}
status = snd_soc_read(wsa_res->codec, WSA881X_INTR_STATUS);
/* Apply masking */
status &= ~wsa_res->irq_masks_cur;
for (i = 0; i < wsa_res->num_irqs; i++) {
if (status & BYTE_BIT_MASK(i)) {
mutex_lock(&wsa_res->nested_irq_lock);
handle_nested_irq(phyirq_to_virq(wsa_res, i));
mutex_unlock(&wsa_res->nested_irq_lock);
}
}
return IRQ_HANDLED;
}
static void wcd9xxx_irq_disable(struct irq_data *data)
{
struct wcd9xxx *wcd9xxx = irq_data_get_irq_chip_data(data);
int wcd9xxx_irq = virq_to_phyirq(wcd9xxx, data->irq);
wcd9xxx->irq_masks_cur[BIT_BYTE(wcd9xxx_irq)]
|= BYTE_BIT_MASK(wcd9xxx_irq);
}
int wcd9xxx_spmi_free_irq(int irq, void *priv)
{
devm_free_irq(&map.spmi[BIT_BYTE(irq)]->dev, map.linuxirq[irq],
priv);
map.mask[BIT_BYTE(irq)] |= BYTE_BIT_MASK(irq);
return 0;
}
static void wcd9xxx_irq_enable(struct irq_data *data)
{
struct wcd9xxx_core_resource *wcd9xxx_res =
irq_data_get_irq_chip_data(data);
int wcd9xxx_irq = virq_to_phyirq(wcd9xxx_res, data->irq);
wcd9xxx_res->irq_masks_cur[BIT_BYTE(wcd9xxx_irq)] &=
~(BYTE_BIT_MASK(wcd9xxx_irq));
}
static void wcd9xxx_irq_disable(struct irq_data *data)
{
struct wcd9xxx_core_resource *wcd9xxx_res =
irq_data_get_irq_chip_data(data);
int wcd9xxx_irq = virq_to_phyirq(wcd9xxx_res, data->irq);
if (BIT_BYTE(wcd9xxx_irq) < WCD9XXX_MAX_IRQ_REGS)
wcd9xxx_res->irq_masks_cur[BIT_BYTE(wcd9xxx_irq)]
|= BYTE_BIT_MASK(wcd9xxx_irq);
}
static void wcd9xxx_irq_dispatch(struct wcd9xxx *wcd9xxx, int irqbit)
{
if ((irqbit <= WCD9XXX_IRQ_MBHC_INSERTION) &&
(irqbit >= WCD9XXX_IRQ_MBHC_REMOVAL)) {
wcd9xxx_nested_irq_lock(wcd9xxx);
wcd9xxx_reg_write(wcd9xxx, WCD9XXX_A_INTR_CLEAR0 +
BIT_BYTE(irqbit),
BYTE_BIT_MASK(irqbit));
if (wcd9xxx_get_intf_type() == WCD9XXX_INTERFACE_TYPE_I2C)
wcd9xxx_reg_write(wcd9xxx, WCD9XXX_A_INTR_MODE, 0x02);
handle_nested_irq(phyirq_to_virq(wcd9xxx, irqbit));
wcd9xxx_nested_irq_unlock(wcd9xxx);
} else {
wcd9xxx_nested_irq_lock(wcd9xxx);
handle_nested_irq(phyirq_to_virq(wcd9xxx, irqbit));
wcd9xxx_reg_write(wcd9xxx, WCD9XXX_A_INTR_CLEAR0 +
BIT_BYTE(irqbit),
BYTE_BIT_MASK(irqbit));
if (wcd9xxx_get_intf_type() == WCD9XXX_INTERFACE_TYPE_I2C)
wcd9xxx_reg_write(wcd9xxx, WCD9XXX_A_INTR_MODE, 0x02);
wcd9xxx_nested_irq_unlock(wcd9xxx);
}
}
static irqreturn_t wcd9xxx_spmi_irq_handler(int linux_irq, void *data)
{
int irq, i, j;
unsigned long status[NUM_IRQ_REGS] = {0};
printk("%s\n", __func__);
if (unlikely(wcd9xxx_spmi_lock_sleep() == false)) {
pr_err("Failed to hold suspend\n");
return IRQ_NONE;
}
irq = get_irq_bit(linux_irq);
if (irq == MAX_NUM_IRQS)
return IRQ_HANDLED;
status[BIT_BYTE(irq)] |= BYTE_BIT_MASK(irq);
for (i = 0; i < NUM_IRQ_REGS; i++) {
status[i] |= snd_soc_read(map.codec,
BIT_BYTE(irq) * 0x100 +
MSM8X16_WCD_A_DIGITAL_INT_LATCHED_STS);
status[i] &= ~map.mask[i];
}
for (i = 0; i < MAX_NUM_IRQS; i++) {
j = get_order_irq(i);
if ((status[BIT_BYTE(j)] & BYTE_BIT_MASK(j)) &&
((map.handled[BIT_BYTE(j)] &
BYTE_BIT_MASK(j)) == 0)) {
map.handler[j](irq, data);
map.handled[BIT_BYTE(j)] |=
BYTE_BIT_MASK(j);
}
}
map.handled[BIT_BYTE(irq)] &= ~BYTE_BIT_MASK(irq);
wcd9xxx_spmi_unlock_sleep();
return IRQ_HANDLED;
}
static void wsa_irq_disable(struct irq_data *data)
{
struct wsa_resource *wsa_res =
irq_data_get_irq_chip_data(data);
int wsa_irq;
if (wsa_res == NULL) {
pr_err("%s: wsa_res pointer is NULL\n", __func__);
return;
}
wsa_irq = virq_to_phyirq(wsa_res, data->irq);
pr_debug("%s: wsa_irq = %d\n", __func__, wsa_irq);
wsa_res->irq_masks_cur
|= BYTE_BIT_MASK(wsa_irq);
}
int wcd9xxx_spmi_irq_init(void)
{
int i = 0;
for (; i < MAX_NUM_IRQS; i++)
map.mask[BIT_BYTE(i)] |= BYTE_BIT_MASK(i);
mutex_init(&map.pm_lock);
map.wlock_holders = 0;
map.pm_state = WCD9XXX_PM_SLEEPABLE;
init_waitqueue_head(&map.pm_wq);
pm_qos_add_request(&map.pm_qos_req,
PM_QOS_CPU_DMA_LATENCY,
PM_QOS_DEFAULT_VALUE);
return 0;
}
int wcd9xxx_irq_init(struct wcd9xxx_core_resource *wcd9xxx_res)
{
int i, ret;
u8 irq_level[wcd9xxx_res->num_irq_regs];
mutex_init(&wcd9xxx_res->irq_lock);
mutex_init(&wcd9xxx_res->nested_irq_lock);
wcd9xxx_res->irq = wcd9xxx_irq_get_upstream_irq(wcd9xxx_res);
if (!wcd9xxx_res->irq) {
pr_warn("%s: irq driver is not yet initialized\n", __func__);
mutex_destroy(&wcd9xxx_res->irq_lock);
mutex_destroy(&wcd9xxx_res->nested_irq_lock);
return -EPROBE_DEFER;
}
pr_debug("%s: probed irq %d\n", __func__, wcd9xxx_res->irq);
ret = wcd9xxx_irq_setup_downstream_irq(wcd9xxx_res);
if (ret) {
pr_err("%s: Failed to setup downstream IRQ\n", __func__);
wcd9xxx_irq_put_upstream_irq(wcd9xxx_res);
mutex_destroy(&wcd9xxx_res->irq_lock);
mutex_destroy(&wcd9xxx_res->nested_irq_lock);
return ret;
}
wcd9xxx_res->irq_level_high[0] = true;
memset(irq_level, 0, wcd9xxx_res->num_irq_regs);
for (i = 0; i < wcd9xxx_res->num_irqs; i++) {
wcd9xxx_res->irq_masks_cur[BIT_BYTE(i)] |= BYTE_BIT_MASK(i);
wcd9xxx_res->irq_masks_cache[BIT_BYTE(i)] |= BYTE_BIT_MASK(i);
irq_level[BIT_BYTE(i)] |=
wcd9xxx_res->irq_level_high[i] << (i % BITS_PER_BYTE);
}
if (!wcd9xxx_res->codec_reg_write) {
dev_err(wcd9xxx_res->dev,
"%s: Codec Register write callback not defined\n",
__func__);
ret = -EINVAL;
goto fail_irq_init;
}
for (i = 0; i < wcd9xxx_res->num_irq_regs; i++) {
wcd9xxx_res->codec_reg_write(wcd9xxx_res,
WCD9XXX_A_INTR_LEVEL0 + i,
irq_level[i]);
wcd9xxx_res->codec_reg_write(wcd9xxx_res,
WCD9XXX_A_INTR_MASK0 + i,
wcd9xxx_res->irq_masks_cur[i]);
}
ret = request_threaded_irq(wcd9xxx_res->irq, NULL, wcd9xxx_irq_thread,
IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
"wcd9xxx", wcd9xxx_res);
if (ret != 0)
dev_err(wcd9xxx_res->dev, "Failed to request IRQ %d: %d\n",
wcd9xxx_res->irq, ret);
else {
ret = enable_irq_wake(wcd9xxx_res->irq);
if (ret)
dev_err(wcd9xxx_res->dev,
"Failed to set wake interrupt on IRQ %d: %d\n",
wcd9xxx_res->irq, ret);
if (ret)
free_irq(wcd9xxx_res->irq, wcd9xxx_res);
}
if (ret)
goto fail_irq_init;
return ret;
fail_irq_init:
dev_err(wcd9xxx_res->dev,
"%s: Failed to init wcd9xxx irq\n", __func__);
wcd9xxx_irq_put_upstream_irq(wcd9xxx_res);
mutex_destroy(&wcd9xxx_res->irq_lock);
mutex_destroy(&wcd9xxx_res->nested_irq_lock);
return ret;
}
static irqreturn_t wcd9xxx_irq_thread(int irq, void *data)
{
int ret;
int i;
struct intr_data irqdata;
char linebuf[128];
static DEFINE_RATELIMIT_STATE(ratelimit, 5 * HZ, 1);
struct wcd9xxx_core_resource *wcd9xxx_res = data;
int num_irq_regs = wcd9xxx_res->num_irq_regs;
u8 status[num_irq_regs], status1[num_irq_regs];
if (unlikely(wcd9xxx_lock_sleep(wcd9xxx_res) == false)) {
dev_err(wcd9xxx_res->dev, "Failed to hold suspend\n");
return IRQ_NONE;
}
if (!wcd9xxx_res->codec_bulk_read) {
dev_err(wcd9xxx_res->dev,
"%s: Codec Bulk Register read callback not supplied\n",
__func__);
goto err_disable_irq;
}
ret = wcd9xxx_res->codec_bulk_read(wcd9xxx_res,
WCD9XXX_A_INTR_STATUS0,
num_irq_regs, status);
if (ret < 0) {
dev_err(wcd9xxx_res->dev,
"Failed to read interrupt status: %d\n", ret);
goto err_disable_irq;
}
for (i = 0; i < num_irq_regs; i++)
status[i] &= ~wcd9xxx_res->irq_masks_cur[i];
memcpy(status1, status, sizeof(status1));
for (i = 0; i < wcd9xxx_res->intr_table_size; i++) {
irqdata = wcd9xxx_res->intr_table[i];
if (status[BIT_BYTE(irqdata.intr_num)] &
BYTE_BIT_MASK(irqdata.intr_num)) {
wcd9xxx_irq_dispatch(wcd9xxx_res, &irqdata);
status1[BIT_BYTE(irqdata.intr_num)] &=
~BYTE_BIT_MASK(irqdata.intr_num);
}
}
if (unlikely(!memcmp(status, status1, sizeof(status)))) {
if (__ratelimit(&ratelimit)) {
pr_warn("%s: Unhandled irq found\n", __func__);
hex_dump_to_buffer(status, sizeof(status), 16, 1,
linebuf, sizeof(linebuf), false);
pr_warn("%s: status0 : %s\n", __func__, linebuf);
hex_dump_to_buffer(status1, sizeof(status1), 16, 1,
linebuf, sizeof(linebuf), false);
pr_warn("%s: status1 : %s\n", __func__, linebuf);
}
memset(status, 0xff, num_irq_regs);
wcd9xxx_res->codec_bulk_write(wcd9xxx_res,
WCD9XXX_A_INTR_CLEAR0,
num_irq_regs, status);
if (wcd9xxx_get_intf_type() == WCD9XXX_INTERFACE_TYPE_I2C)
wcd9xxx_res->codec_reg_write(wcd9xxx_res,
WCD9XXX_A_INTR_MODE, 0x02);
}
wcd9xxx_unlock_sleep(wcd9xxx_res);
return IRQ_HANDLED;
err_disable_irq:
dev_err(wcd9xxx_res->dev,
"Disable irq %d\n", wcd9xxx_res->irq);
disable_irq_wake(wcd9xxx_res->irq);
disable_irq_nosync(wcd9xxx_res->irq);
wcd9xxx_unlock_sleep(wcd9xxx_res);
return IRQ_NONE;
}
int wcd9xxx_irq_init(struct wcd9xxx *wcd9xxx)
{
int i, ret;
u8 irq_level[wcd9xxx_num_irq_regs(wcd9xxx)];
mutex_init(&wcd9xxx->irq_lock);
mutex_init(&wcd9xxx->nested_irq_lock);
wcd9xxx->irq = wcd9xxx_irq_get_upstream_irq(wcd9xxx);
if (!wcd9xxx->irq) {
pr_warn("%s: irq driver is not yet initialized\n", __func__);
mutex_destroy(&wcd9xxx->irq_lock);
mutex_destroy(&wcd9xxx->nested_irq_lock);
return -EPROBE_DEFER;
}
pr_debug("%s: probed irq %d\n", __func__, wcd9xxx->irq);
/* Setup downstream IRQs */
ret = wcd9xxx_irq_setup_downstream_irq(wcd9xxx);
if (ret) {
pr_err("%s: Failed to setup downstream IRQ\n", __func__);
wcd9xxx_irq_put_upstream_irq(wcd9xxx);
mutex_destroy(&wcd9xxx->irq_lock);
mutex_destroy(&wcd9xxx->nested_irq_lock);
return ret;
}
/* All other wcd9xxx interrupts are edge triggered */
wcd9xxx->irq_level_high[0] = true;
/* mask all the interrupts */
memset(irq_level, 0, wcd9xxx_num_irq_regs(wcd9xxx));
for (i = 0; i < wcd9xxx->num_irqs; i++) {
wcd9xxx->irq_masks_cur[BIT_BYTE(i)] |= BYTE_BIT_MASK(i);
wcd9xxx->irq_masks_cache[BIT_BYTE(i)] |= BYTE_BIT_MASK(i);
irq_level[BIT_BYTE(i)] |=
wcd9xxx->irq_level_high[i] << (i % BITS_PER_BYTE);
}
for (i = 0; i < wcd9xxx_num_irq_regs(wcd9xxx); i++) {
/* Initialize interrupt mask and level registers */
wcd9xxx_reg_write(wcd9xxx, WCD9XXX_A_INTR_LEVEL0 + i,
irq_level[i]);
wcd9xxx_reg_write(wcd9xxx, WCD9XXX_A_INTR_MASK0 + i,
wcd9xxx->irq_masks_cur[i]);
}
ret = request_threaded_irq(wcd9xxx->irq, NULL, wcd9xxx_irq_thread,
IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
"wcd9xxx", wcd9xxx);
if (ret != 0)
dev_err(wcd9xxx->dev, "Failed to request IRQ %d: %d\n",
wcd9xxx->irq, ret);
else {
ret = enable_irq_wake(wcd9xxx->irq);
if (ret == 0) {
ret = device_init_wakeup(wcd9xxx->dev, 1);
if (ret) {
dev_err(wcd9xxx->dev, "Failed to init device"
"wakeup : %d\n", ret);
disable_irq_wake(wcd9xxx->irq);
}
} else
dev_err(wcd9xxx->dev, "Failed to set wake interrupt on"
" IRQ %d: %d\n", wcd9xxx->irq, ret);
if (ret)
free_irq(wcd9xxx->irq, wcd9xxx);
}
if (ret) {
pr_err("%s: Failed to init wcd9xxx irq\n", __func__);
wcd9xxx_irq_put_upstream_irq(wcd9xxx);
mutex_destroy(&wcd9xxx->irq_lock);
mutex_destroy(&wcd9xxx->nested_irq_lock);
}
return ret;
}
static int wsa_irq_init(struct wsa_resource *wsa_res)
{
int i, ret;
if (wsa_res == NULL) {
pr_err("%s: wsa_res is NULL\n", __func__);
return -EINVAL;
}
mutex_init(&wsa_res->irq_lock);
mutex_init(&wsa_res->nested_irq_lock);
wsa_res->irq = wsa_irq_get_upstream_irq(wsa_res);
if (!wsa_res->irq) {
pr_warn("%s: irq driver is not yet initialized\n", __func__);
mutex_destroy(&wsa_res->irq_lock);
mutex_destroy(&wsa_res->nested_irq_lock);
return -EPROBE_DEFER;
}
pr_debug("%s: probed irq %d\n", __func__, wsa_res->irq);
/* Setup downstream IRQs */
ret = wsa_irq_setup_downstream_irq(wsa_res);
if (ret) {
pr_err("%s: Failed to setup downstream IRQ\n", __func__);
goto fail_irq_init;
}
/* mask all the interrupts */
for (i = 0; i < wsa_res->num_irqs; i++) {
wsa_res->irq_masks_cur |= BYTE_BIT_MASK(i);
wsa_res->irq_masks_cache |= BYTE_BIT_MASK(i);
}
ret = request_threaded_irq(wsa_res->irq, NULL, wsa_irq_thread,
IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
"wsa", wsa_res);
if (ret != 0) {
dev_err(wsa_res->dev, "Failed to request IRQ %d: %d\n",
wsa_res->irq, ret);
} else {
ret = enable_irq_wake(wsa_res->irq);
if (ret) {
dev_err(wsa_res->dev,
"Failed to set wake interrupt on IRQ %d: %d\n",
wsa_res->irq, ret);
free_irq(wsa_res->irq, wsa_res);
}
}
if (ret)
goto fail_irq_init;
return ret;
fail_irq_init:
dev_err(wsa_res->dev,
"%s: Failed to init wsa irq\n", __func__);
wsa_irq_put_upstream_irq(wsa_res);
mutex_destroy(&wsa_res->irq_lock);
mutex_destroy(&wsa_res->nested_irq_lock);
return ret;
}
static irqreturn_t wcd9xxx_irq_thread(int irq, void *data)
{
int ret;
int i;
struct intr_data irqdata;
char linebuf[128];
static DEFINE_RATELIMIT_STATE(ratelimit, 5 * HZ, 1);
struct wcd9xxx_core_resource *wcd9xxx_res = data;
int num_irq_regs = wcd9xxx_res->num_irq_regs;
u8 status[num_irq_regs], status1[num_irq_regs];
if (unlikely(wcd9xxx_lock_sleep(wcd9xxx_res) == false)) {
dev_err(wcd9xxx_res->dev, "Failed to hold suspend\n");
return IRQ_NONE;
}
if (!wcd9xxx_res->codec_bulk_read) {
dev_err(wcd9xxx_res->dev,
"%s: Codec Bulk Register read callback not supplied\n",
__func__);
goto err_disable_irq;
}
ret = wcd9xxx_res->codec_bulk_read(wcd9xxx_res,
WCD9XXX_A_INTR_STATUS0,
num_irq_regs, status);
if (ret < 0) {
dev_err(wcd9xxx_res->dev,
"Failed to read interrupt status: %d\n", ret);
goto err_disable_irq;
}
/* Apply masking */
for (i = 0; i < num_irq_regs; i++)
status[i] &= ~wcd9xxx_res->irq_masks_cur[i];
memcpy(status1, status, sizeof(status1));
/* Find out which interrupt was triggered and call that interrupt's
* handler function
*
* Since codec has only one hardware irq line which is shared by
* codec's different internal interrupts, so it's possible master irq
* handler dispatches multiple nested irq handlers after breaking
* order. Dispatch interrupts in the order that is maintained by
* the interrupt table.
*/
for (i = 0; i < wcd9xxx_res->intr_table_size; i++) {
irqdata = wcd9xxx_res->intr_table[i];
if (status[BIT_BYTE(irqdata.intr_num)] &
BYTE_BIT_MASK(irqdata.intr_num)) {
wcd9xxx_irq_dispatch(wcd9xxx_res, &irqdata);
status1[BIT_BYTE(irqdata.intr_num)] &=
~BYTE_BIT_MASK(irqdata.intr_num);
}
}
/*
* As a failsafe if unhandled irq is found, clear it to prevent
* interrupt storm.
* Note that we can say there was an unhandled irq only when no irq
* handled by nested irq handler since Taiko supports qdsp as irqs'
* destination for few irqs. Therefore driver shouldn't clear pending
* irqs when few handled while few others not.
*/
if (unlikely(!memcmp(status, status1, sizeof(status)))) {
if (__ratelimit(&ratelimit)) {
pr_warn("%s: Unhandled irq found\n", __func__);
hex_dump_to_buffer(status, sizeof(status), 16, 1,
linebuf, sizeof(linebuf), false);
pr_warn("%s: status0 : %s\n", __func__, linebuf);
hex_dump_to_buffer(status1, sizeof(status1), 16, 1,
linebuf, sizeof(linebuf), false);
pr_warn("%s: status1 : %s\n", __func__, linebuf);
}
memset(status, 0xff, num_irq_regs);
ret = wcd9xxx_res->codec_bulk_write(wcd9xxx_res,
WCD9XXX_A_INTR_CLEAR0,
num_irq_regs, status);
if (wcd9xxx_get_intf_type() == WCD9XXX_INTERFACE_TYPE_I2C)
wcd9xxx_res->codec_reg_write(wcd9xxx_res,
WCD9XXX_A_INTR_MODE, 0x02);
}
wcd9xxx_unlock_sleep(wcd9xxx_res);
return IRQ_HANDLED;
err_disable_irq:
dev_err(wcd9xxx_res->dev,
"Disable irq %d\n", wcd9xxx_res->irq);
disable_irq_wake(wcd9xxx_res->irq);
disable_irq_nosync(wcd9xxx_res->irq);
wcd9xxx_unlock_sleep(wcd9xxx_res);
return IRQ_NONE;
}
