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media: ddbridge: add helper for IRQ handler setup

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Introduce the ddb_irq_set() helper function (along with a matching
prototype in ddbridge.h) to improve the set up of the IRQ handlers
and handler_data, and rework storing this data into the ddb_link
using a new ddb_irq struct. This also does the necessary rework
of affected variables. And while at it, always do queue_work in
input_handler() as there's not much of a difference to directly
calling input_work if there's no ptr at input->redi, or queueing
this call.

Picked up from the upstream dddvb-0.9.33 release.

Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Daniel Scheller 2018-04-09 12:47:40 -04:00 committed by Mauro Carvalho Chehab
parent 6bf0f0512a
commit 1dda87ac15
3 changed files with 41 additions and 28 deletions
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53
drivers/media/pci/ddbridge/ddbridge-core.c
View File

@ -108,6 +108,16 @@ static struct ddb *ddbs[DDB_MAX_ADAPTER];
/****************************************************************************/
/****************************************************************************/
struct ddb_irq *ddb_irq_set(struct ddb *dev, u32 link, u32 nr,
void (*handler)(void *), void *data)
{
struct ddb_irq *irq = &dev->link[link].irq[nr];
irq->handler = handler;
irq->data = data;
return irq;
}
static void ddb_set_dma_table(struct ddb_io *io)
{
struct ddb *dev = io->port->dev;
@ -2094,26 +2104,18 @@ static void input_work(struct work_struct *work)
spin_unlock_irqrestore(&dma->lock, flags);
}
static void input_handler(unsigned long data)
static void input_handler(void *data)
{
struct ddb_input *input = (struct ddb_input *)data;
struct ddb_dma *dma = input->dma;
/*
* If there is no input connected, input_tasklet() will
* just copy pointers and ACK. So, there is no need to go
* through the tasklet scheduler.
*/
if (input->redi)
queue_work(ddb_wq, &dma->work);
else
input_work(&dma->work);
queue_work(ddb_wq, &dma->work);
}
static void output_handler(unsigned long data)
static void output_work(struct work_struct *work)
{
struct ddb_output *output = (struct ddb_output *)data;
struct ddb_dma *dma = output->dma;
struct ddb_dma *dma = container_of(work, struct ddb_dma, work);
struct ddb_output *output = (struct ddb_output *)dma->io;
struct ddb *dev = output->port->dev;
spin_lock(&dma->lock);
@ -2129,6 +2131,14 @@ static void output_handler(unsigned long data)
spin_unlock(&dma->lock);
}
static void output_handler(void *data)
{
struct ddb_output *output = (struct ddb_output *)data;
struct ddb_dma *dma = output->dma;
queue_work(ddb_wq, &dma->work);
}
/****************************************************************************/
/****************************************************************************/
@ -2159,6 +2169,7 @@ static void ddb_dma_init(struct ddb_io *io, int nr, int out)
spin_lock_init(&dma->lock);
init_waitqueue_head(&dma->wq);
if (out) {
INIT_WORK(&dma->work, output_work);
dma->regs = rm->odma->base + rm->odma->size * nr;
dma->bufregs = rm->odma_buf->base + rm->odma_buf->size * nr;
dma->num = OUTPUT_DMA_BUFS;
@ -2203,8 +2214,7 @@ static void ddb_input_init(struct ddb_port *port, int nr, int pnr, int anr)
dev_dbg(dev->dev, "init link %u, input %u, handler %u\n",
port->lnr, nr, dma_nr + base);
dev->handler[0][dma_nr + base] = input_handler;
dev->handler_data[0][dma_nr + base] = (unsigned long)input;
ddb_irq_set(dev, 0, dma_nr + base, &input_handler, input);
ddb_dma_init(input, dma_nr, 0);
}
}
@ -2229,8 +2239,7 @@ static void ddb_output_init(struct ddb_port *port, int nr)
const struct ddb_regmap *rm0 = io_regmap(output, 0);
u32 base = rm0->irq_base_odma;
dev->handler[0][nr + base] = output_handler;
dev->handler_data[0][nr + base] = (unsigned long)output;
ddb_irq_set(dev, 0, nr + base, &output_handler, output);
ddb_dma_init(output, nr, 1);
}
}
@ -2374,8 +2383,9 @@ void ddb_ports_release(struct ddb *dev)
/****************************************************************************/
#define IRQ_HANDLE(_nr) \
do { if ((s & (1UL << ((_nr) & 0x1f))) && dev->handler[0][_nr]) \
dev->handler[0][_nr](dev->handler_data[0][_nr]); } \
do { if ((s & (1UL << ((_nr) & 0x1f))) && \
dev->link[0].irq[_nr].handler) \
dev->link[0].irq[_nr].handler(dev->link[0].irq[_nr].data); } \
while (0)
static void irq_handle_msg(struct ddb *dev, u32 s)
@ -3186,7 +3196,7 @@ static void tempmon_setfan(struct ddb_link *link)
ddblwritel(link, (pwm << 8), TEMPMON_FANCONTROL);
}
static void temp_handler(unsigned long data)
static void temp_handler(void *data)
{
struct ddb_link *link = (struct ddb_link *)data;
@ -3209,8 +3219,7 @@ static int tempmon_init(struct ddb_link *link, int first_time)
memcpy(link->temp_tab, temperature_table,
sizeof(temperature_table));
}
dev->handler[l][link->info->tempmon_irq] = temp_handler;
dev->handler_data[l][link->info->tempmon_irq] = (unsigned long)link;
ddb_irq_set(dev, l, link->info->tempmon_irq, temp_handler, link);
ddblwritel(link, (TEMPMON_CONTROL_OVERTEMP | TEMPMON_CONTROL_AUTOSCAN |
TEMPMON_CONTROL_INTENABLE),
TEMPMON_CONTROL);

5
drivers/media/pci/ddbridge/ddbridge-i2c.c
View File

@ -147,7 +147,7 @@ void ddb_i2c_release(struct ddb *dev)
}
}
static void i2c_handler(unsigned long priv)
static void i2c_handler(void *priv)
{
struct ddb_i2c *i2c = (struct ddb_i2c *)priv;
@ -210,8 +210,7 @@ int ddb_i2c_init(struct ddb *dev)
if (!(dev->link[l].info->i2c_mask & (1 << i)))
continue;
i2c = &dev->i2c[num];
dev->handler_data[l][i + base] = (unsigned long)i2c;
dev->handler[l][i + base] = i2c_handler;
ddb_irq_set(dev, l, i + base, i2c_handler, i2c);
stat = ddb_i2c_add(dev, i2c, regmap, l, i, num);
if (stat)
break;

11
drivers/media/pci/ddbridge/ddbridge.h
View File

@ -305,6 +305,11 @@ struct ddb_lnb {
u32 fmode;
};
struct ddb_irq {
void (*handler)(void *);
void *data;
};
struct ddb_link {
struct ddb *dev;
const struct ddb_info *info;
@ -319,6 +324,7 @@ struct ddb_link {
spinlock_t temp_lock; /* lock temp chip access */
int overtemperature_error;
u8 temp_tab[11];
struct ddb_irq irq[256];
};
struct ddb {
@ -343,9 +349,6 @@ struct ddb {
struct ddb_dma idma[DDB_MAX_INPUT];
struct ddb_dma odma[DDB_MAX_OUTPUT];
void (*handler[4][256])(unsigned long);
unsigned long handler_data[4][256];
struct device *ddb_dev;
u32 ddb_dev_users;
u32 nr;
@ -369,6 +372,8 @@ int ddbridge_flashread(struct ddb *dev, u32 link, u8 *buf, u32 addr, u32 len);
/****************************************************************************/
/* ddbridge-core.c */
struct ddb_irq *ddb_irq_set(struct ddb *dev, u32 link, u32 nr,
void (*handler)(void *), void *data);
void ddb_ports_detach(struct ddb *dev);
void ddb_ports_release(struct ddb *dev);
void ddb_buffers_free(struct ddb *dev);